1 /* NDS32-specific support for 32-bit ELF.
2 Copyright (C) 2012-2018 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
25 #include "bfd_stdint.h"
29 #include "libiberty.h"
30 #include "bfd_stdint.h"
31 #include "elf/nds32.h"
32 #include "opcode/nds32.h"
33 #include "elf32-nds32.h"
34 #include "opcode/cgen.h"
35 #include "../opcodes/nds32-opc.h"
37 /* Relocation HOWTO functions. */
38 static bfd_reloc_status_type nds32_elf_ignore_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type nds32_elf_9_pcrel_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type nds32_elf_hi20_reloc
43 (bfd *, arelent *, asymbol *, void *,
44 asection *, bfd *, char **);
45 static bfd_reloc_status_type nds32_elf_lo12_reloc
46 (bfd *, arelent *, asymbol *, void *,
47 asection *, bfd *, char **);
48 static bfd_reloc_status_type nds32_elf_generic_reloc
49 (bfd *, arelent *, asymbol *, void *,
50 asection *, bfd *, char **);
51 static bfd_reloc_status_type nds32_elf_sda15_reloc
52 (bfd *, arelent *, asymbol *, void *,
53 asection *, bfd *, char **);
55 /* Helper functions for HOWTO. */
56 static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc
57 (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma,
58 asection *, bfd_vma, bfd_vma);
60 /* Nds32 helper functions. */
61 static bfd_vma calculate_memory_address
62 (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *);
63 static int nds32_get_section_contents (bfd *, asection *,
64 bfd_byte **, bfd_boolean);
65 static bfd_boolean nds32_elf_ex9_build_hash_table
66 (bfd *, asection *, struct bfd_link_info *);
67 static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *);
68 static void nds32_elf_ex9_import_table (struct bfd_link_info *);
69 static void nds32_elf_ex9_finish (struct bfd_link_info *);
70 static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *);
71 static void nds32_elf_get_insn_with_reg
72 (Elf_Internal_Rela *, uint32_t, uint32_t *);
73 static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED,
75 static bfd_boolean nds32_elf_ex9_replace_instruction
76 (struct bfd_link_info *, bfd *, asection *);
77 static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *,
79 static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *);
80 static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *);
81 static bfd_boolean nds32_elf_ifc_reloc (void);
82 static bfd_boolean nds32_relax_fp_as_gp
83 (struct bfd_link_info *link_info, bfd *abfd, asection *sec,
84 Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend,
85 Elf_Internal_Sym *isymbuf);
86 static bfd_boolean nds32_fag_remove_unused_fpbase
87 (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs,
88 Elf_Internal_Rela *irelend);
92 MACH_V1 = bfd_mach_n1h,
93 MACH_V2 = bfd_mach_n1h_v2,
94 MACH_V3 = bfd_mach_n1h_v3,
95 MACH_V3M = bfd_mach_n1h_v3m
98 #define MIN(a, b) ((a) > (b) ? (b) : (a))
99 #define MAX(a, b) ((a) > (b) ? (a) : (b))
101 /* The name of the dynamic interpreter. This is put in the .interp
103 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
105 /* The nop opcode we use. */
106 #define NDS32_NOP32 0x40000009
107 #define NDS32_NOP16 0x9200
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
111 #define PLT_HEADER_SIZE 24
113 /* The first entry in a procedure linkage table are reserved,
114 and the initial contents are unimportant (we zero them out).
115 Subsequent entries look like this. */
116 #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */
117 #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */
118 #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */
119 #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */
120 #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */
122 /* $ta is change to $r15 (from $r25). */
123 #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */
124 #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */
125 #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */
126 #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */
127 #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */
128 #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */
130 #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */
131 #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */
132 #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */
133 #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */
134 #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */
136 #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */
137 #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */
138 #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */
139 #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */
140 #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */
141 #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */
143 /* These are macros used to get the relocation accurate value. */
144 #define ACCURATE_8BIT_S1 (0x100)
145 #define ACCURATE_U9BIT_S1 (0x400)
146 #define ACCURATE_12BIT_S1 (0x2000)
147 #define ACCURATE_14BIT_S1 (0x4000)
148 #define ACCURATE_19BIT (0x40000)
150 /* These are macros used to get the relocation conservative value. */
151 #define CONSERVATIVE_8BIT_S1 (0x100 - 4)
152 #define CONSERVATIVE_14BIT_S1 (0x4000 - 4)
153 #define CONSERVATIVE_16BIT_S1 (0x10000 - 4)
154 #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4)
155 /* These must be more conservative because the address may be in
156 different segment. */
157 #define CONSERVATIVE_15BIT (0x4000 - 0x1000)
158 #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000)
159 #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000)
160 #define CONSERVATIVE_19BIT (0x40000 - 0x1000)
161 #define CONSERVATIVE_20BIT (0x80000 - 0x1000)
163 /* Size of small data/bss sections, used to calculate SDA_BASE. */
164 static long got_size = 0;
165 static int is_SDA_BASE_set = 0;
166 static int is_ITB_BASE_set = 0;
168 /* Convert ELF-VER in eflags to string for debugging purpose. */
169 static const char *const nds32_elfver_strtab[] =
176 /* The nds32 linker needs to keep track of the number of relocs that it
177 decides to copy in check_relocs for each symbol. This is so that
178 it can discard PC relative relocs if it doesn't need them when
179 linking with -Bsymbolic. We store the information in a field
180 extending the regular ELF linker hash table. */
182 /* This structure keeps track of the number of PC relative relocs we
183 have copied for a given symbol. */
185 struct elf_nds32_pcrel_relocs_copied
188 struct elf_nds32_pcrel_relocs_copied *next;
189 /* A section in dynobj. */
191 /* Number of relocs copied in this section. */
195 /* Nds32 ELF linker hash entry. */
197 struct elf_nds32_link_hash_entry
199 struct elf_link_hash_entry root;
201 /* Track dynamic relocs copied for this symbol. */
202 struct elf_dyn_relocs *dyn_relocs;
204 /* For checking relocation type. */
205 #define GOT_UNKNOWN 0
208 unsigned int tls_type;
211 /* Get the nds32 ELF linker hash table from a link_info structure. */
213 #define FP_BASE_NAME "_FP_BASE_"
214 static int check_start_export_sym = 0;
215 static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */
217 /* The offset for executable tls relaxation. */
218 #define TP_OFFSET 0x0
220 struct elf_nds32_obj_tdata
222 struct elf_obj_tdata root;
224 /* tls_type for each local got entry. */
225 char *local_got_tls_type;
228 #define elf_nds32_tdata(bfd) \
229 ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any)
231 #define elf32_nds32_local_got_tls_type(bfd) \
232 (elf_nds32_tdata (bfd)->local_got_tls_type)
234 #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent))
237 nds32_elf_mkobject (bfd *abfd)
239 return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata),
243 /* Relocations used for relocation. */
244 static reloc_howto_type nds32_elf_howto_table[] =
246 /* This reloc does nothing. */
247 HOWTO (R_NDS32_NONE, /* type */
249 3, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE, /* pc_relative */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_NDS32_NONE", /* name */
256 FALSE, /* partial_inplace */
259 FALSE), /* pcrel_offset */
261 /* A 16 bit absolute relocation. */
262 HOWTO (R_NDS32_16, /* type */
264 1, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE, /* pc_relative */
268 complain_overflow_bitfield, /* complain_on_overflow */
269 nds32_elf_generic_reloc, /* special_function */
270 "R_NDS32_16", /* name */
271 FALSE, /* partial_inplace */
272 0xffff, /* src_mask */
273 0xffff, /* dst_mask */
274 FALSE), /* pcrel_offset */
276 /* A 32 bit absolute relocation. */
277 HOWTO (R_NDS32_32, /* type */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE, /* pc_relative */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 nds32_elf_generic_reloc, /* special_function */
285 "R_NDS32_32", /* name */
286 FALSE, /* partial_inplace */
287 0xffffffff, /* src_mask */
288 0xffffffff, /* dst_mask */
289 FALSE), /* pcrel_offset */
291 /* A 20 bit address. */
292 HOWTO (R_NDS32_20, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE, /* pc_relative */
298 complain_overflow_unsigned, /* complain_on_overflow */
299 nds32_elf_generic_reloc, /* special_function */
300 "R_NDS32_20", /* name */
301 FALSE, /* partial_inplace */
302 0xfffff, /* src_mask */
303 0xfffff, /* dst_mask */
304 FALSE), /* pcrel_offset */
306 /* An PC Relative 9-bit relocation, shifted by 2.
307 This reloc is complicated because relocations are relative to pc & -4.
308 i.e. branches in the right insn slot use the address of the left insn
310 /* ??? It's not clear whether this should have partial_inplace set or not.
311 Branch relaxing in the assembler can store the addend in the insn,
312 and if bfd_install_relocation gets called the addend may get added
314 HOWTO (R_NDS32_9_PCREL, /* type */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
318 TRUE, /* pc_relative */
320 complain_overflow_signed, /* complain_on_overflow */
321 nds32_elf_9_pcrel_reloc, /* special_function */
322 "R_NDS32_9_PCREL", /* name */
323 FALSE, /* partial_inplace */
326 TRUE), /* pcrel_offset */
328 /* A relative 15 bit relocation, right shifted by 1. */
329 HOWTO (R_NDS32_15_PCREL, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 TRUE, /* pc_relative */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_NDS32_15_PCREL", /* name */
338 FALSE, /* partial_inplace */
339 0x3fff, /* src_mask */
340 0x3fff, /* dst_mask */
341 TRUE), /* pcrel_offset */
343 /* A relative 17 bit relocation, right shifted by 1. */
344 HOWTO (R_NDS32_17_PCREL, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE, /* pc_relative */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_NDS32_17_PCREL", /* name */
353 FALSE, /* partial_inplace */
354 0xffff, /* src_mask */
355 0xffff, /* dst_mask */
356 TRUE), /* pcrel_offset */
358 /* A relative 25 bit relocation, right shifted by 1. */
359 /* ??? It's not clear whether this should have partial_inplace set or not.
360 Branch relaxing in the assembler can store the addend in the insn,
361 and if bfd_install_relocation gets called the addend may get added
363 HOWTO (R_NDS32_25_PCREL, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 TRUE, /* pc_relative */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_NDS32_25_PCREL", /* name */
372 FALSE, /* partial_inplace */
373 0xffffff, /* src_mask */
374 0xffffff, /* dst_mask */
375 TRUE), /* pcrel_offset */
377 /* High 20 bits of address when lower 12 is or'd in. */
378 HOWTO (R_NDS32_HI20, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 FALSE, /* pc_relative */
384 complain_overflow_dont,/* complain_on_overflow */
385 nds32_elf_hi20_reloc, /* special_function */
386 "R_NDS32_HI20", /* name */
387 FALSE, /* partial_inplace */
388 0x000fffff, /* src_mask */
389 0x000fffff, /* dst_mask */
390 FALSE), /* pcrel_offset */
392 /* Lower 12 bits of address. */
393 HOWTO (R_NDS32_LO12S3, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE, /* pc_relative */
399 complain_overflow_dont,/* complain_on_overflow */
400 nds32_elf_lo12_reloc, /* special_function */
401 "R_NDS32_LO12S3", /* name */
402 FALSE, /* partial_inplace */
403 0x000001ff, /* src_mask */
404 0x000001ff, /* dst_mask */
405 FALSE), /* pcrel_offset */
407 /* Lower 12 bits of address. */
408 HOWTO (R_NDS32_LO12S2, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_dont,/* complain_on_overflow */
415 nds32_elf_lo12_reloc, /* special_function */
416 "R_NDS32_LO12S2", /* name */
417 FALSE, /* partial_inplace */
418 0x000003ff, /* src_mask */
419 0x000003ff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 /* Lower 12 bits of address. */
423 HOWTO (R_NDS32_LO12S1, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_dont,/* complain_on_overflow */
430 nds32_elf_lo12_reloc, /* special_function */
431 "R_NDS32_LO12S1", /* name */
432 FALSE, /* partial_inplace */
433 0x000007ff, /* src_mask */
434 0x000007ff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 /* Lower 12 bits of address. */
438 HOWTO (R_NDS32_LO12S0, /* type */
440 2, /* size (0 = byte, 1 = short, 2 = long) */
442 FALSE, /* pc_relative */
444 complain_overflow_dont,/* complain_on_overflow */
445 nds32_elf_lo12_reloc, /* special_function */
446 "R_NDS32_LO12S0", /* name */
447 FALSE, /* partial_inplace */
448 0x00000fff, /* src_mask */
449 0x00000fff, /* dst_mask */
450 FALSE), /* pcrel_offset */
452 /* Small data area 15 bits offset. */
453 HOWTO (R_NDS32_SDA15S3, /* type */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 FALSE, /* pc_relative */
459 complain_overflow_signed, /* complain_on_overflow */
460 nds32_elf_sda15_reloc, /* special_function */
461 "R_NDS32_SDA15S3", /* name */
462 FALSE, /* partial_inplace */
463 0x00007fff, /* src_mask */
464 0x00007fff, /* dst_mask */
465 FALSE), /* pcrel_offset */
467 /* Small data area 15 bits offset. */
468 HOWTO (R_NDS32_SDA15S2, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_signed, /* complain_on_overflow */
475 nds32_elf_sda15_reloc, /* special_function */
476 "R_NDS32_SDA15S2", /* name */
477 FALSE, /* partial_inplace */
478 0x00007fff, /* src_mask */
479 0x00007fff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Small data area 15 bits offset. */
483 HOWTO (R_NDS32_SDA15S1, /* type */
485 2, /* size (0 = byte, 1 = short, 2 = long) */
487 FALSE, /* pc_relative */
489 complain_overflow_signed, /* complain_on_overflow */
490 nds32_elf_sda15_reloc, /* special_function */
491 "R_NDS32_SDA15S1", /* name */
492 FALSE, /* partial_inplace */
493 0x00007fff, /* src_mask */
494 0x00007fff, /* dst_mask */
495 FALSE), /* pcrel_offset */
497 /* Small data area 15 bits offset. */
498 HOWTO (R_NDS32_SDA15S0, /* type */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE, /* pc_relative */
504 complain_overflow_signed, /* complain_on_overflow */
505 nds32_elf_sda15_reloc, /* special_function */
506 "R_NDS32_SDA15S0", /* name */
507 FALSE, /* partial_inplace */
508 0x00007fff, /* src_mask */
509 0x00007fff, /* dst_mask */
510 FALSE), /* pcrel_offset */
512 /* GNU extension to record C++ vtable hierarchy */
513 HOWTO (R_NDS32_GNU_VTINHERIT, /* type */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE, /* pc_relative */
519 complain_overflow_dont,/* complain_on_overflow */
520 NULL, /* special_function */
521 "R_NDS32_GNU_VTINHERIT", /* name */
522 FALSE, /* partial_inplace */
525 FALSE), /* pcrel_offset */
527 /* GNU extension to record C++ vtable member usage */
528 HOWTO (R_NDS32_GNU_VTENTRY, /* type */
530 2, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE, /* pc_relative */
534 complain_overflow_dont,/* complain_on_overflow */
535 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
536 "R_NDS32_GNU_VTENTRY", /* name */
537 FALSE, /* partial_inplace */
540 FALSE), /* pcrel_offset */
542 /* A 16 bit absolute relocation. */
543 HOWTO (R_NDS32_16_RELA, /* type */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE, /* pc_relative */
549 complain_overflow_bitfield, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_NDS32_16_RELA", /* name */
552 FALSE, /* partial_inplace */
553 0xffff, /* src_mask */
554 0xffff, /* dst_mask */
555 FALSE), /* pcrel_offset */
557 /* A 32 bit absolute relocation. */
558 HOWTO (R_NDS32_32_RELA, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE, /* pc_relative */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_NDS32_32_RELA", /* name */
567 FALSE, /* partial_inplace */
568 0xffffffff, /* src_mask */
569 0xffffffff, /* dst_mask */
570 FALSE), /* pcrel_offset */
572 /* A 20 bit address. */
573 HOWTO (R_NDS32_20_RELA, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_signed, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_NDS32_20_RELA", /* name */
582 FALSE, /* partial_inplace */
583 0xfffff, /* src_mask */
584 0xfffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 HOWTO (R_NDS32_9_PCREL_RELA, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE, /* pc_relative */
593 complain_overflow_signed, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_NDS32_9_PCREL_RELA",/* name */
596 FALSE, /* partial_inplace */
599 TRUE), /* pcrel_offset */
601 /* A relative 15 bit relocation, right shifted by 1. */
602 HOWTO (R_NDS32_15_PCREL_RELA, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE, /* pc_relative */
608 complain_overflow_signed, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_NDS32_15_PCREL_RELA", /* name */
611 FALSE, /* partial_inplace */
612 0x3fff, /* src_mask */
613 0x3fff, /* dst_mask */
614 TRUE), /* pcrel_offset */
616 /* A relative 17 bit relocation, right shifted by 1. */
617 HOWTO (R_NDS32_17_PCREL_RELA, /* type */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
621 TRUE, /* pc_relative */
623 complain_overflow_signed, /* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_NDS32_17_PCREL_RELA", /* name */
626 FALSE, /* partial_inplace */
627 0xffff, /* src_mask */
628 0xffff, /* dst_mask */
629 TRUE), /* pcrel_offset */
631 /* A relative 25 bit relocation, right shifted by 2. */
632 HOWTO (R_NDS32_25_PCREL_RELA, /* type */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
636 TRUE, /* pc_relative */
638 complain_overflow_signed, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_NDS32_25_PCREL_RELA", /* name */
641 FALSE, /* partial_inplace */
642 0xffffff, /* src_mask */
643 0xffffff, /* dst_mask */
644 TRUE), /* pcrel_offset */
646 /* High 20 bits of address when lower 16 is or'd in. */
647 HOWTO (R_NDS32_HI20_RELA, /* type */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE, /* pc_relative */
653 complain_overflow_dont,/* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_NDS32_HI20_RELA", /* name */
656 FALSE, /* partial_inplace */
657 0x000fffff, /* src_mask */
658 0x000fffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
661 /* Lower 12 bits of address. */
662 HOWTO (R_NDS32_LO12S3_RELA, /* type */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
666 FALSE, /* pc_relative */
668 complain_overflow_dont,/* complain_on_overflow */
669 bfd_elf_generic_reloc, /* special_function */
670 "R_NDS32_LO12S3_RELA", /* name */
671 FALSE, /* partial_inplace */
672 0x000001ff, /* src_mask */
673 0x000001ff, /* dst_mask */
674 FALSE), /* pcrel_offset */
676 /* Lower 12 bits of address. */
677 HOWTO (R_NDS32_LO12S2_RELA, /* type */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont,/* complain_on_overflow */
684 bfd_elf_generic_reloc, /* special_function */
685 "R_NDS32_LO12S2_RELA", /* name */
686 FALSE, /* partial_inplace */
687 0x000003ff, /* src_mask */
688 0x000003ff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Lower 12 bits of address. */
692 HOWTO (R_NDS32_LO12S1_RELA, /* type */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE, /* pc_relative */
698 complain_overflow_dont,/* complain_on_overflow */
699 bfd_elf_generic_reloc, /* special_function */
700 "R_NDS32_LO12S1_RELA", /* name */
701 FALSE, /* partial_inplace */
702 0x000007ff, /* src_mask */
703 0x000007ff, /* dst_mask */
704 FALSE), /* pcrel_offset */
706 /* Lower 12 bits of address. */
707 HOWTO (R_NDS32_LO12S0_RELA, /* type */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
711 FALSE, /* pc_relative */
713 complain_overflow_dont,/* complain_on_overflow */
714 bfd_elf_generic_reloc, /* special_function */
715 "R_NDS32_LO12S0_RELA", /* name */
716 FALSE, /* partial_inplace */
717 0x00000fff, /* src_mask */
718 0x00000fff, /* dst_mask */
719 FALSE), /* pcrel_offset */
721 /* Small data area 15 bits offset. */
722 HOWTO (R_NDS32_SDA15S3_RELA, /* type */
724 2, /* size (0 = byte, 1 = short, 2 = long) */
726 FALSE, /* pc_relative */
728 complain_overflow_signed, /* complain_on_overflow */
729 bfd_elf_generic_reloc, /* special_function */
730 "R_NDS32_SDA15S3_RELA",/* name */
731 FALSE, /* partial_inplace */
732 0x00007fff, /* src_mask */
733 0x00007fff, /* dst_mask */
734 FALSE), /* pcrel_offset */
736 /* Small data area 15 bits offset. */
737 HOWTO (R_NDS32_SDA15S2_RELA, /* type */
739 2, /* size (0 = byte, 1 = short, 2 = long) */
741 FALSE, /* pc_relative */
743 complain_overflow_signed, /* complain_on_overflow */
744 bfd_elf_generic_reloc, /* special_function */
745 "R_NDS32_SDA15S2_RELA",/* name */
746 FALSE, /* partial_inplace */
747 0x00007fff, /* src_mask */
748 0x00007fff, /* dst_mask */
749 FALSE), /* pcrel_offset */
751 HOWTO (R_NDS32_SDA15S1_RELA, /* type */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_signed, /* complain_on_overflow */
758 bfd_elf_generic_reloc, /* special_function */
759 "R_NDS32_SDA15S1_RELA",/* name */
760 FALSE, /* partial_inplace */
761 0x00007fff, /* src_mask */
762 0x00007fff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 HOWTO (R_NDS32_SDA15S0_RELA, /* type */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_signed, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_NDS32_SDA15S0_RELA",/* name */
774 FALSE, /* partial_inplace */
775 0x00007fff, /* src_mask */
776 0x00007fff, /* dst_mask */
777 FALSE), /* pcrel_offset */
779 /* GNU extension to record C++ vtable hierarchy */
780 HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */
782 2, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE, /* pc_relative */
786 complain_overflow_dont,/* complain_on_overflow */
787 NULL, /* special_function */
788 "R_NDS32_RELA_GNU_VTINHERIT", /* name */
789 FALSE, /* partial_inplace */
792 FALSE), /* pcrel_offset */
794 /* GNU extension to record C++ vtable member usage */
795 HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE, /* pc_relative */
801 complain_overflow_dont,/* complain_on_overflow */
802 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
803 "R_NDS32_RELA_GNU_VTENTRY", /* name */
804 FALSE, /* partial_inplace */
807 FALSE), /* pcrel_offset */
809 /* Like R_NDS32_20, but referring to the GOT table entry for
811 HOWTO (R_NDS32_GOT20, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 FALSE, /* pc_relative */
817 complain_overflow_signed, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_NDS32_GOT20", /* name */
820 FALSE, /* partial_inplace */
821 0xfffff, /* src_mask */
822 0xfffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
825 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
826 entry for the symbol. */
827 HOWTO (R_NDS32_25_PLTREL, /* type */
829 2, /* size (0 = byte, 1 = short, 2 = long) */
831 TRUE, /* pc_relative */
833 complain_overflow_signed, /* complain_on_overflow */
834 bfd_elf_generic_reloc, /* special_function */
835 "R_NDS32_25_PLTREL", /* name */
836 FALSE, /* partial_inplace */
837 0xffffff, /* src_mask */
838 0xffffff, /* dst_mask */
839 TRUE), /* pcrel_offset */
841 /* This is used only by the dynamic linker. The symbol should exist
842 both in the object being run and in some shared library. The
843 dynamic linker copies the data addressed by the symbol from the
844 shared library into the object, because the object being
845 run has to have the data at some particular address. */
846 HOWTO (R_NDS32_COPY, /* type */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
850 FALSE, /* pc_relative */
852 complain_overflow_bitfield, /* complain_on_overflow */
853 bfd_elf_generic_reloc, /* special_function */
854 "R_NDS32_COPY", /* name */
855 FALSE, /* partial_inplace */
856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
858 FALSE), /* pcrel_offset */
860 /* Like R_NDS32_20, but used when setting global offset table
862 HOWTO (R_NDS32_GLOB_DAT, /* type */
864 2, /* size (0 = byte, 1 = short, 2 = long) */
866 FALSE, /* pc_relative */
868 complain_overflow_bitfield, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_NDS32_GLOB_DAT", /* name */
871 FALSE, /* partial_inplace */
872 0xffffffff, /* src_mask */
873 0xffffffff, /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* Marks a procedure linkage table entry for a symbol. */
877 HOWTO (R_NDS32_JMP_SLOT, /* type */
879 2, /* size (0 = byte, 1 = short, 2 = long) */
881 FALSE, /* pc_relative */
883 complain_overflow_bitfield, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_NDS32_JMP_SLOT", /* name */
886 FALSE, /* partial_inplace */
887 0xffffffff, /* src_mask */
888 0xffffffff, /* dst_mask */
889 FALSE), /* pcrel_offset */
891 /* Used only by the dynamic linker. When the object is run, this
892 longword is set to the load address of the object, plus the
894 HOWTO (R_NDS32_RELATIVE, /* type */
896 2, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE, /* pc_relative */
900 complain_overflow_bitfield, /* complain_on_overflow */
901 bfd_elf_generic_reloc, /* special_function */
902 "R_NDS32_RELATIVE", /* name */
903 FALSE, /* partial_inplace */
904 0xffffffff, /* src_mask */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
908 HOWTO (R_NDS32_GOTOFF, /* type */
910 2, /* size (0 = byte, 1 = short, 2 = long) */
912 FALSE, /* pc_relative */
914 complain_overflow_signed, /* complain_on_overflow */
915 bfd_elf_generic_reloc, /* special_function */
916 "R_NDS32_GOTOFF", /* name */
917 FALSE, /* partial_inplace */
918 0xfffff, /* src_mask */
919 0xfffff, /* dst_mask */
920 FALSE), /* pcrel_offset */
922 /* An PC Relative 20-bit relocation used when setting PIC offset
924 HOWTO (R_NDS32_GOTPC20, /* type */
926 2, /* size (0 = byte, 1 = short, 2 = long) */
928 TRUE, /* pc_relative */
930 complain_overflow_signed, /* complain_on_overflow */
931 bfd_elf_generic_reloc, /* special_function */
932 "R_NDS32_GOTPC20", /* name */
933 FALSE, /* partial_inplace */
934 0xfffff, /* src_mask */
935 0xfffff, /* dst_mask */
936 TRUE), /* pcrel_offset */
938 /* Like R_NDS32_HI20, but referring to the GOT table entry for
940 HOWTO (R_NDS32_GOT_HI20, /* type */
942 2, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE, /* pc_relative */
946 complain_overflow_dont,/* complain_on_overflow */
947 bfd_elf_generic_reloc, /* special_function */
948 "R_NDS32_GOT_HI20", /* name */
949 FALSE, /* partial_inplace */
950 0x000fffff, /* src_mask */
951 0x000fffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
953 HOWTO (R_NDS32_GOT_LO12, /* type */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE, /* pc_relative */
959 complain_overflow_dont,/* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
961 "R_NDS32_GOT_LO12", /* name */
962 FALSE, /* partial_inplace */
963 0x00000fff, /* src_mask */
964 0x00000fff, /* dst_mask */
965 FALSE), /* pcrel_offset */
967 /* An PC Relative relocation used when setting PIC offset table register.
968 Like R_NDS32_HI20, but referring to the GOT table entry for
970 HOWTO (R_NDS32_GOTPC_HI20, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_dont,/* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_NDS32_GOTPC_HI20", /* name */
979 FALSE, /* partial_inplace */
980 0x000fffff, /* src_mask */
981 0x000fffff, /* dst_mask */
982 TRUE), /* pcrel_offset */
983 HOWTO (R_NDS32_GOTPC_LO12, /* type */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
987 FALSE, /* pc_relative */
989 complain_overflow_dont, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_NDS32_GOTPC_LO12", /* name */
992 FALSE, /* partial_inplace */
993 0x00000fff, /* src_mask */
994 0x00000fff, /* dst_mask */
995 TRUE), /* pcrel_offset */
997 HOWTO (R_NDS32_GOTOFF_HI20, /* type */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE, /* pc_relative */
1003 complain_overflow_dont,/* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_NDS32_GOTOFF_HI20", /* name */
1006 FALSE, /* partial_inplace */
1007 0x000fffff, /* src_mask */
1008 0x000fffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010 HOWTO (R_NDS32_GOTOFF_LO12, /* type */
1012 2, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_dont,/* complain_on_overflow */
1017 bfd_elf_generic_reloc, /* special_function */
1018 "R_NDS32_GOTOFF_LO12", /* name */
1019 FALSE, /* partial_inplace */
1020 0x00000fff, /* src_mask */
1021 0x00000fff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Alignment hint for relaxable instruction. This is used with
1025 R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2
1026 in order to make next label aligned on word boundary. */
1027 HOWTO (R_NDS32_INSN16, /* type */
1029 2, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE, /* pc_relative */
1033 complain_overflow_dont,/* complain_on_overflow */
1034 nds32_elf_ignore_reloc,/* special_function */
1035 "R_NDS32_INSN16", /* name */
1036 FALSE, /* partial_inplace */
1037 0x00000fff, /* src_mask */
1038 0x00000fff, /* dst_mask */
1039 FALSE), /* pcrel_offset */
1041 /* Alignment hint for label. */
1042 HOWTO (R_NDS32_LABEL, /* type */
1044 2, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont,/* complain_on_overflow */
1049 nds32_elf_ignore_reloc,/* special_function */
1050 "R_NDS32_LABEL", /* name */
1051 FALSE, /* partial_inplace */
1052 0xffffffff, /* src_mask */
1053 0xffffffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Relax hint for unconditional call sequence */
1057 HOWTO (R_NDS32_LONGCALL1, /* type */
1059 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE, /* pc_relative */
1063 complain_overflow_dont,/* complain_on_overflow */
1064 nds32_elf_ignore_reloc,/* special_function */
1065 "R_NDS32_LONGCALL1", /* name */
1066 FALSE, /* partial_inplace */
1067 0xffffffff, /* src_mask */
1068 0xffffffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1071 /* Relax hint for conditional call sequence. */
1072 HOWTO (R_NDS32_LONGCALL2, /* type */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE, /* pc_relative */
1078 complain_overflow_dont,/* complain_on_overflow */
1079 nds32_elf_ignore_reloc,/* special_function */
1080 "R_NDS32_LONGCALL2", /* name */
1081 FALSE, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1086 /* Relax hint for conditional call sequence. */
1087 HOWTO (R_NDS32_LONGCALL3, /* type */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE, /* pc_relative */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 nds32_elf_ignore_reloc,/* special_function */
1095 "R_NDS32_LONGCALL3", /* name */
1096 FALSE, /* partial_inplace */
1097 0xffffffff, /* src_mask */
1098 0xffffffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1101 /* Relax hint for unconditional branch sequence. */
1102 HOWTO (R_NDS32_LONGJUMP1, /* type */
1104 2, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_dont,/* complain_on_overflow */
1109 nds32_elf_ignore_reloc,/* special_function */
1110 "R_NDS32_LONGJUMP1", /* name */
1111 FALSE, /* partial_inplace */
1112 0xffffffff, /* src_mask */
1113 0xffffffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* Relax hint for conditional branch sequence. */
1117 HOWTO (R_NDS32_LONGJUMP2, /* type */
1119 2, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE, /* pc_relative */
1123 complain_overflow_dont,/* complain_on_overflow */
1124 nds32_elf_ignore_reloc,/* special_function */
1125 "R_NDS32_LONGJUMP2", /* name */
1126 FALSE, /* partial_inplace */
1127 0xffffffff, /* src_mask */
1128 0xffffffff, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1131 /* Relax hint for conditional branch sequence. */
1132 HOWTO (R_NDS32_LONGJUMP3, /* type */
1134 2, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE, /* pc_relative */
1138 complain_overflow_dont,/* complain_on_overflow */
1139 nds32_elf_ignore_reloc,/* special_function */
1140 "R_NDS32_LONGJUMP3", /* name */
1141 FALSE, /* partial_inplace */
1142 0xffffffff, /* src_mask */
1143 0xffffffff, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1146 /* Relax hint for load/store sequence. */
1147 HOWTO (R_NDS32_LOADSTORE, /* type */
1149 2, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE, /* pc_relative */
1153 complain_overflow_dont,/* complain_on_overflow */
1154 nds32_elf_ignore_reloc,/* special_function */
1155 "R_NDS32_LOADSTORE", /* name */
1156 FALSE, /* partial_inplace */
1157 0xffffffff, /* src_mask */
1158 0xffffffff, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1161 /* Relax hint for load/store sequence. */
1162 HOWTO (R_NDS32_9_FIXED_RELA, /* type */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 FALSE, /* pc_relative */
1168 complain_overflow_dont,/* complain_on_overflow */
1169 nds32_elf_ignore_reloc,/* special_function */
1170 "R_NDS32_9_FIXED_RELA",/* name */
1171 FALSE, /* partial_inplace */
1172 0x000000ff, /* src_mask */
1173 0x000000ff, /* dst_mask */
1174 FALSE), /* pcrel_offset */
1176 /* Relax hint for load/store sequence. */
1177 HOWTO (R_NDS32_15_FIXED_RELA, /* type */
1179 2, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE, /* pc_relative */
1183 complain_overflow_dont,/* complain_on_overflow */
1184 nds32_elf_ignore_reloc,/* special_function */
1185 "R_NDS32_15_FIXED_RELA", /* name */
1186 FALSE, /* partial_inplace */
1187 0x00003fff, /* src_mask */
1188 0x00003fff, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1191 /* Relax hint for load/store sequence. */
1192 HOWTO (R_NDS32_17_FIXED_RELA, /* type */
1194 2, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE, /* pc_relative */
1198 complain_overflow_dont,/* complain_on_overflow */
1199 nds32_elf_ignore_reloc,/* special_function */
1200 "R_NDS32_17_FIXED_RELA", /* name */
1201 FALSE, /* partial_inplace */
1202 0x0000ffff, /* src_mask */
1203 0x0000ffff, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1206 /* Relax hint for load/store sequence. */
1207 HOWTO (R_NDS32_25_FIXED_RELA, /* type */
1209 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE, /* pc_relative */
1213 complain_overflow_dont,/* complain_on_overflow */
1214 nds32_elf_ignore_reloc,/* special_function */
1215 "R_NDS32_25_FIXED_RELA", /* name */
1216 FALSE, /* partial_inplace */
1217 0x00ffffff, /* src_mask */
1218 0x00ffffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1221 /* High 20 bits of PLT symbol offset relative to PC. */
1222 HOWTO (R_NDS32_PLTREL_HI20, /* type */
1223 12, /* rightshift */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE, /* pc_relative */
1228 complain_overflow_dont,/* complain_on_overflow */
1229 bfd_elf_generic_reloc, /* special_function */
1230 "R_NDS32_PLTREL_HI20", /* name */
1231 FALSE, /* partial_inplace */
1232 0x000fffff, /* src_mask */
1233 0x000fffff, /* dst_mask */
1234 FALSE), /* pcrel_offset */
1236 /* Low 12 bits of PLT symbol offset relative to PC. */
1237 HOWTO (R_NDS32_PLTREL_LO12, /* type */
1239 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 FALSE, /* pc_relative */
1243 complain_overflow_dont,/* complain_on_overflow */
1244 bfd_elf_generic_reloc, /* special_function */
1245 "R_NDS32_PLTREL_LO12", /* name */
1246 FALSE, /* partial_inplace */
1247 0x00000fff, /* src_mask */
1248 0x00000fff, /* dst_mask */
1249 FALSE), /* pcrel_offset */
1251 /* High 20 bits of PLT symbol offset relative to GOT (GP). */
1252 HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */
1253 12, /* rightshift */
1254 2, /* size (0 = byte, 1 = short, 2 = long) */
1256 FALSE, /* pc_relative */
1258 complain_overflow_dont,/* complain_on_overflow */
1259 bfd_elf_generic_reloc, /* special_function */
1260 "R_NDS32_PLT_GOTREL_HI20", /* name */
1261 FALSE, /* partial_inplace */
1262 0x000fffff, /* src_mask */
1263 0x000fffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1266 /* Low 12 bits of PLT symbol offset relative to GOT (GP). */
1267 HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */
1269 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 FALSE, /* pc_relative */
1273 complain_overflow_dont,/* complain_on_overflow */
1274 bfd_elf_generic_reloc, /* special_function */
1275 "R_NDS32_PLT_GOTREL_LO12", /* name */
1276 FALSE, /* partial_inplace */
1277 0x00000fff, /* src_mask */
1278 0x00000fff, /* dst_mask */
1279 FALSE), /* pcrel_offset */
1281 /* Small data area 12 bits offset. */
1282 HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE, /* pc_relative */
1288 complain_overflow_signed, /* complain_on_overflow */
1289 bfd_elf_generic_reloc, /* special_function */
1290 "R_NDS32_SDA12S2_DP_RELA", /* name */
1291 FALSE, /* partial_inplace */
1292 0x00000fff, /* src_mask */
1293 0x00000fff, /* dst_mask */
1294 FALSE), /* pcrel_offset */
1296 /* Small data area 12 bits offset. */
1297 HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_signed, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_NDS32_SDA12S2_SP_RELA", /* name */
1306 FALSE, /* partial_inplace */
1307 0x00000fff, /* src_mask */
1308 0x00000fff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310 /* Lower 12 bits of address. */
1312 HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE, /* pc_relative */
1318 complain_overflow_dont,/* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_NDS32_LO12S2_DP_RELA", /* name */
1321 FALSE, /* partial_inplace */
1322 0x000003ff, /* src_mask */
1323 0x000003ff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1326 /* Lower 12 bits of address. */
1327 HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */
1329 2, /* size (0 = byte, 1 = short, 2 = long) */
1331 FALSE, /* pc_relative */
1333 complain_overflow_dont,/* complain_on_overflow */
1334 bfd_elf_generic_reloc, /* special_function */
1335 "R_NDS32_LO12S2_SP_RELA", /* name */
1336 FALSE, /* partial_inplace */
1337 0x000003ff, /* src_mask */
1338 0x000003ff, /* dst_mask */
1339 FALSE), /* pcrel_offset */
1340 /* Lower 12 bits of address. Special identity for or case. */
1341 HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */
1343 2, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_dont,/* complain_on_overflow */
1348 bfd_elf_generic_reloc, /* special_function */
1349 "R_NDS32_LO12S0_ORI_RELA", /* name */
1350 FALSE, /* partial_inplace */
1351 0x00000fff, /* src_mask */
1352 0x00000fff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1354 /* Small data area 19 bits offset. */
1355 HOWTO (R_NDS32_SDA16S3_RELA, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE, /* pc_relative */
1361 complain_overflow_signed, /* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_NDS32_SDA16S3_RELA",/* name */
1364 FALSE, /* partial_inplace */
1365 0x0000ffff, /* src_mask */
1366 0x0000ffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1369 /* Small data area 15 bits offset. */
1370 HOWTO (R_NDS32_SDA17S2_RELA, /* type */
1372 2, /* size (0 = byte, 1 = short, 2 = long) */
1374 FALSE, /* pc_relative */
1376 complain_overflow_signed, /* complain_on_overflow */
1377 bfd_elf_generic_reloc, /* special_function */
1378 "R_NDS32_SDA17S2_RELA",/* name */
1379 FALSE, /* partial_inplace */
1380 0x0001ffff, /* src_mask */
1381 0x0001ffff, /* dst_mask */
1382 FALSE), /* pcrel_offset */
1384 HOWTO (R_NDS32_SDA18S1_RELA, /* type */
1386 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_signed, /* complain_on_overflow */
1391 bfd_elf_generic_reloc, /* special_function */
1392 "R_NDS32_SDA18S1_RELA",/* name */
1393 FALSE, /* partial_inplace */
1394 0x0003ffff, /* src_mask */
1395 0x0003ffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 HOWTO (R_NDS32_SDA19S0_RELA, /* type */
1400 2, /* size (0 = byte, 1 = short, 2 = long) */
1402 FALSE, /* pc_relative */
1404 complain_overflow_signed, /* complain_on_overflow */
1405 bfd_elf_generic_reloc, /* special_function */
1406 "R_NDS32_SDA19S0_RELA",/* name */
1407 FALSE, /* partial_inplace */
1408 0x0007ffff, /* src_mask */
1409 0x0007ffff, /* dst_mask */
1410 FALSE), /* pcrel_offset */
1411 HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_dont,/* complain_on_overflow */
1418 nds32_elf_ignore_reloc,/* special_function */
1419 "R_NDS32_DWARF2_OP1_RELA", /* name */
1420 FALSE, /* partial_inplace */
1421 0xff, /* src_mask */
1422 0xff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424 HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_dont,/* complain_on_overflow */
1431 nds32_elf_ignore_reloc,/* special_function */
1432 "R_NDS32_DWARF2_OP2_RELA", /* name */
1433 FALSE, /* partial_inplace */
1434 0xffff, /* src_mask */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437 HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */
1439 2, /* size (0 = byte, 1 = short, 2 = long) */
1441 FALSE, /* pc_relative */
1443 complain_overflow_dont,/* complain_on_overflow */
1444 nds32_elf_ignore_reloc,/* special_function */
1445 "R_NDS32_DWARF2_LEB_RELA", /* name */
1446 FALSE, /* partial_inplace */
1447 0xffffffff, /* src_mask */
1448 0xffffffff, /* dst_mask */
1449 FALSE), /* pcrel_offset */
1450 HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */
1452 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 FALSE, /* pc_relative */
1456 complain_overflow_dont,/* complain_on_overflow */
1457 nds32_elf_ignore_reloc,/* special_function */
1458 "R_NDS32_UPDATE_TA_RELA", /* name */
1459 FALSE, /* partial_inplace */
1460 0xffff, /* src_mask */
1461 0xffff, /* dst_mask */
1462 FALSE), /* pcrel_offset */
1463 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
1464 entry for the symbol. */
1465 HOWTO (R_NDS32_9_PLTREL, /* type */
1467 1, /* size (0 = byte, 1 = short, 2 = long) */
1469 TRUE, /* pc_relative */
1471 complain_overflow_signed, /* complain_on_overflow */
1472 bfd_elf_generic_reloc, /* special_function */
1473 "R_NDS32_9_PLTREL", /* name */
1474 FALSE, /* partial_inplace */
1475 0xff, /* src_mask */
1476 0xff, /* dst_mask */
1477 TRUE), /* pcrel_offset */
1478 /* Low 20 bits of PLT symbol offset relative to GOT (GP). */
1479 HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */
1481 2, /* size (0 = byte, 1 = short, 2 = long) */
1483 FALSE, /* pc_relative */
1485 complain_overflow_dont,/* complain_on_overflow */
1486 bfd_elf_generic_reloc, /* special_function */
1487 "R_NDS32_PLT_GOTREL_LO20", /* name */
1488 FALSE, /* partial_inplace */
1489 0x000fffff, /* src_mask */
1490 0x000fffff, /* dst_mask */
1491 FALSE), /* pcrel_offset */
1492 /* low 15 bits of PLT symbol offset relative to GOT (GP) */
1493 HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont,/* complain_on_overflow */
1500 bfd_elf_generic_reloc, /* special_function */
1501 "R_NDS32_PLT_GOTREL_LO15", /* name */
1502 FALSE, /* partial_inplace */
1503 0x00007fff, /* src_mask */
1504 0x00007fff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506 /* Low 19 bits of PLT symbol offset relative to GOT (GP). */
1507 HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_dont,/* complain_on_overflow */
1514 bfd_elf_generic_reloc, /* special_function */
1515 "R_NDS32_PLT_GOTREL_LO19", /* name */
1516 FALSE, /* partial_inplace */
1517 0x0007ffff, /* src_mask */
1518 0x0007ffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520 HOWTO (R_NDS32_GOT_LO15, /* type */
1522 2, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE, /* pc_relative */
1526 complain_overflow_dont,/* complain_on_overflow */
1527 bfd_elf_generic_reloc, /* special_function */
1528 "R_NDS32_GOT_LO15", /* name */
1529 FALSE, /* partial_inplace */
1530 0x00007fff, /* src_mask */
1531 0x00007fff, /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533 HOWTO (R_NDS32_GOT_LO19, /* type */
1535 2, /* size (0 = byte, 1 = short, 2 = long) */
1537 FALSE, /* pc_relative */
1539 complain_overflow_dont,/* complain_on_overflow */
1540 bfd_elf_generic_reloc, /* special_function */
1541 "R_NDS32_GOT_LO19", /* name */
1542 FALSE, /* partial_inplace */
1543 0x0007ffff, /* src_mask */
1544 0x0007ffff, /* dst_mask */
1545 FALSE), /* pcrel_offset */
1546 HOWTO (R_NDS32_GOTOFF_LO15, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE, /* pc_relative */
1552 complain_overflow_dont,/* complain_on_overflow */
1553 bfd_elf_generic_reloc, /* special_function */
1554 "R_NDS32_GOTOFF_LO15", /* name */
1555 FALSE, /* partial_inplace */
1556 0x00007fff, /* src_mask */
1557 0x00007fff, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1559 HOWTO (R_NDS32_GOTOFF_LO19, /* type */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_dont,/* complain_on_overflow */
1566 bfd_elf_generic_reloc, /* special_function */
1567 "R_NDS32_GOTOFF_LO19", /* name */
1568 FALSE, /* partial_inplace */
1569 0x0007ffff, /* src_mask */
1570 0x0007ffff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572 /* GOT 15 bits offset. */
1573 HOWTO (R_NDS32_GOT15S2_RELA, /* type */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE, /* pc_relative */
1579 complain_overflow_signed, /* complain_on_overflow */
1580 bfd_elf_generic_reloc, /* special_function */
1581 "R_NDS32_GOT15S2_RELA",/* name */
1582 FALSE, /* partial_inplace */
1583 0x00007fff, /* src_mask */
1584 0x00007fff, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1586 /* GOT 17 bits offset. */
1587 HOWTO (R_NDS32_GOT17S2_RELA, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_signed, /* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_NDS32_GOT17S2_RELA",/* name */
1596 FALSE, /* partial_inplace */
1597 0x0001ffff, /* src_mask */
1598 0x0001ffff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600 /* A 5 bit address. */
1601 HOWTO (R_NDS32_5_RELA, /* type */
1603 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 FALSE, /* pc_relative */
1607 complain_overflow_signed, /* complain_on_overflow */
1608 bfd_elf_generic_reloc, /* special_function */
1609 "R_NDS32_5_RELA", /* name */
1610 FALSE, /* partial_inplace */
1611 0x1f, /* src_mask */
1612 0x1f, /* dst_mask */
1613 FALSE), /* pcrel_offset */
1614 HOWTO (R_NDS32_10_UPCREL_RELA,/* type */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 TRUE, /* pc_relative */
1620 complain_overflow_unsigned, /* complain_on_overflow */
1621 bfd_elf_generic_reloc, /* special_function */
1622 "R_NDS32_10_UPCREL_RELA", /* name */
1623 FALSE, /* partial_inplace */
1624 0x1ff, /* src_mask */
1625 0x1ff, /* dst_mask */
1626 TRUE), /* pcrel_offset */
1627 HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_unsigned, /* complain_on_overflow */
1634 bfd_elf_generic_reloc, /* special_function */
1635 "R_NDS32_SDA_FP7U2_RELA", /* name */
1636 FALSE, /* partial_inplace */
1637 0x0000007f, /* src_mask */
1638 0x0000007f, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1640 HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */
1642 2, /* size (0 = byte, 1 = short, 2 = long) */
1644 TRUE, /* pc_relative */
1646 complain_overflow_signed, /* complain_on_overflow */
1647 bfd_elf_generic_reloc, /* special_function */
1648 "R_NDS32_WORD_9_PCREL_RELA", /* name */
1649 FALSE, /* partial_inplace */
1650 0xff, /* src_mask */
1651 0xff, /* dst_mask */
1652 TRUE), /* pcrel_offset */
1653 HOWTO (R_NDS32_25_ABS_RELA, /* type */
1655 2, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE, /* pc_relative */
1659 complain_overflow_dont,/* complain_on_overflow */
1660 bfd_elf_generic_reloc, /* special_function */
1661 "R_NDS32_25_ABS_RELA", /* name */
1662 FALSE, /* partial_inplace */
1663 0xffffff, /* src_mask */
1664 0xffffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1667 /* A relative 17 bit relocation for ifc, right shifted by 1. */
1668 HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */
1670 2, /* size (0 = byte, 1 = short, 2 = long) */
1672 TRUE, /* pc_relative */
1674 complain_overflow_signed, /* complain_on_overflow */
1675 bfd_elf_generic_reloc, /* special_function */
1676 "R_NDS32_17IFC_PCREL_RELA", /* name */
1677 FALSE, /* partial_inplace */
1678 0xffff, /* src_mask */
1679 0xffff, /* dst_mask */
1680 TRUE), /* pcrel_offset */
1682 /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */
1683 HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 TRUE, /* pc_relative */
1689 complain_overflow_unsigned, /* complain_on_overflow */
1690 bfd_elf_generic_reloc, /* special_function */
1691 "R_NDS32_10IFCU_PCREL_RELA", /* name */
1692 FALSE, /* partial_inplace */
1693 0x1ff, /* src_mask */
1694 0x1ff, /* dst_mask */
1695 TRUE), /* pcrel_offset */
1697 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1698 HOWTO (R_NDS32_TLS_LE_HI20, /* type */
1699 12, /* rightshift */
1700 2, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_dont, /* complain_on_overflow */
1705 bfd_elf_generic_reloc, /* special_function */
1706 "R_NDS32_TLS_LE_HI20", /* name */
1707 FALSE, /* partial_inplace */
1708 0x000fffff, /* src_mask */
1709 0x000fffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1711 HOWTO (R_NDS32_TLS_LE_LO12, /* type */
1713 2, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE, /* pc_relative */
1717 complain_overflow_dont, /* complain_on_overflow */
1718 bfd_elf_generic_reloc, /* special_function */
1719 "R_NDS32_TLS_LE_LO12", /* name */
1720 FALSE, /* partial_inplace */
1721 0x00000fff, /* src_mask */
1722 0x00000fff, /* dst_mask */
1723 FALSE), /* pcrel_offset */
1725 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1726 HOWTO (R_NDS32_TLS_IE_HI20, /* type */
1727 12, /* rightshift */
1728 2, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE, /* pc_relative */
1732 complain_overflow_dont, /* complain_on_overflow */
1733 bfd_elf_generic_reloc, /* special_function */
1734 "R_NDS32_TLS_IE_HI20", /* name */
1735 FALSE, /* partial_inplace */
1736 0x000fffff, /* src_mask */
1737 0x000fffff, /* dst_mask */
1738 FALSE), /* pcrel_offset */
1739 HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */
1741 2, /* size (0 = byte, 1 = short, 2 = long) */
1743 FALSE, /* pc_relative */
1745 complain_overflow_dont, /* complain_on_overflow */
1746 bfd_elf_generic_reloc, /* special_function */
1747 "R_NDS32_TLS_IE_LO12S2", /* name */
1748 FALSE, /* partial_inplace */
1749 0x000003ff, /* src_mask */
1750 0x000003ff, /* dst_mask */
1751 FALSE), /* pcrel_offset */
1752 /* Mark a TLS IE entry in GOT. */
1753 HOWTO (R_NDS32_TLS_TPOFF, /* type */
1755 2, /* size (0 = byte, 1 = short, 2 = long) */
1757 FALSE, /* pc_relative */
1759 complain_overflow_bitfield, /* complain_on_overflow */
1760 bfd_elf_generic_reloc, /* special_function */
1761 "R_NDS32_TLS_TPOFF", /* name */
1762 FALSE, /* partial_inplace */
1763 0xffffffff, /* src_mask */
1764 0xffffffff, /* dst_mask */
1765 FALSE), /* pcrel_offset */
1766 /* A 20 bit address. */
1767 HOWTO (R_NDS32_TLS_LE_20, /* type */
1769 2, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE, /* pc_relative */
1773 complain_overflow_signed, /* complain_on_overflow */
1774 bfd_elf_generic_reloc, /* special_function */
1775 "R_NDS32_TLS_LE_20", /* name */
1776 FALSE, /* partial_inplace */
1777 0xfffff, /* src_mask */
1778 0xfffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
1780 HOWTO (R_NDS32_TLS_LE_15S0, /* type */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_signed, /* complain_on_overflow */
1787 bfd_elf_generic_reloc, /* special_function */
1788 "R_NDS32_TLS_LE_15S0", /* name */
1789 FALSE, /* partial_inplace */
1790 0x7fff, /* src_mask */
1791 0x7fff, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793 HOWTO (R_NDS32_TLS_LE_15S1, /* type */
1795 2, /* size (0 = byte, 1 = short, 2 = long) */
1797 FALSE, /* pc_relative */
1799 complain_overflow_signed, /* complain_on_overflow */
1800 bfd_elf_generic_reloc, /* special_function */
1801 "R_NDS32_TLS_LE_15S1", /* name */
1802 FALSE, /* partial_inplace */
1803 0x7fff, /* src_mask */
1804 0x7fff, /* dst_mask */
1805 FALSE), /* pcrel_offset */
1806 HOWTO (R_NDS32_TLS_LE_15S2, /* type */
1808 2, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE, /* pc_relative */
1812 complain_overflow_signed, /* complain_on_overflow */
1813 bfd_elf_generic_reloc, /* special_function */
1814 "R_NDS32_TLS_LE_15S2", /* name */
1815 FALSE, /* partial_inplace */
1816 0x7fff, /* src_mask */
1817 0x7fff, /* dst_mask */
1818 FALSE), /* pcrel_offset */
1820 /* Relax hint for unconditional call sequence */
1821 HOWTO (R_NDS32_LONGCALL4, /* type */
1823 2, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE, /* pc_relative */
1827 complain_overflow_dont, /* complain_on_overflow */
1828 nds32_elf_ignore_reloc, /* special_function */
1829 "R_NDS32_LONGCALL4", /* name */
1830 FALSE, /* partial_inplace */
1831 0xffffffff, /* src_mask */
1832 0xffffffff, /* dst_mask */
1833 FALSE), /* pcrel_offset */
1835 /* Relax hint for conditional call sequence. */
1836 HOWTO (R_NDS32_LONGCALL5, /* type */
1838 2, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE, /* pc_relative */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 nds32_elf_ignore_reloc, /* special_function */
1844 "R_NDS32_LONGCALL5", /* name */
1845 FALSE, /* partial_inplace */
1846 0xffffffff, /* src_mask */
1847 0xffffffff, /* dst_mask */
1848 FALSE), /* pcrel_offset */
1850 /* Relax hint for conditional call sequence. */
1851 HOWTO (R_NDS32_LONGCALL6, /* type */
1853 2, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE, /* pc_relative */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 nds32_elf_ignore_reloc, /* special_function */
1859 "R_NDS32_LONGCALL6", /* name */
1860 FALSE, /* partial_inplace */
1861 0xffffffff, /* src_mask */
1862 0xffffffff, /* dst_mask */
1863 FALSE), /* pcrel_offset */
1865 /* Relax hint for unconditional branch sequence. */
1866 HOWTO (R_NDS32_LONGJUMP4, /* type */
1868 2, /* size (0 = byte, 1 = short, 2 = long) */
1870 FALSE, /* pc_relative */
1872 complain_overflow_dont, /* complain_on_overflow */
1873 nds32_elf_ignore_reloc, /* special_function */
1874 "R_NDS32_LONGJUMP4", /* name */
1875 FALSE, /* partial_inplace */
1876 0xffffffff, /* src_mask */
1877 0xffffffff, /* dst_mask */
1878 FALSE), /* pcrel_offset */
1880 /* Relax hint for conditional branch sequence. */
1881 HOWTO (R_NDS32_LONGJUMP5, /* type */
1883 2, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE, /* pc_relative */
1887 complain_overflow_dont, /* complain_on_overflow */
1888 nds32_elf_ignore_reloc, /* special_function */
1889 "R_NDS32_LONGJUMP5", /* name */
1890 FALSE, /* partial_inplace */
1891 0xffffffff, /* src_mask */
1892 0xffffffff, /* dst_mask */
1893 FALSE), /* pcrel_offset */
1895 /* Relax hint for conditional branch sequence. */
1896 HOWTO (R_NDS32_LONGJUMP6, /* type */
1898 2, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE, /* pc_relative */
1902 complain_overflow_dont, /* complain_on_overflow */
1903 nds32_elf_ignore_reloc, /* special_function */
1904 "R_NDS32_LONGJUMP6", /* name */
1905 FALSE, /* partial_inplace */
1906 0xffffffff, /* src_mask */
1907 0xffffffff, /* dst_mask */
1908 FALSE), /* pcrel_offset */
1910 /* Relax hint for conditional branch sequence. */
1911 HOWTO (R_NDS32_LONGJUMP7, /* type */
1913 2, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE, /* pc_relative */
1917 complain_overflow_dont, /* complain_on_overflow */
1918 nds32_elf_ignore_reloc, /* special_function */
1919 "R_NDS32_LONGJUMP7", /* name */
1920 FALSE, /* partial_inplace */
1921 0xffffffff, /* src_mask */
1922 0xffffffff, /* dst_mask */
1923 FALSE), /* pcrel_offset */
1926 /* Relocations used for relaxation. */
1927 static reloc_howto_type nds32_elf_relax_howto_table[] =
1929 HOWTO (R_NDS32_RELAX_ENTRY, /* type */
1931 2, /* size (0 = byte, 1 = short, 2 = long) */
1933 FALSE, /* pc_relative */
1935 complain_overflow_dont,/* complain_on_overflow */
1936 nds32_elf_ignore_reloc,/* special_function */
1937 "R_NDS32_RELAX_ENTRY", /* name */
1938 FALSE, /* partial_inplace */
1939 0xffffffff, /* src_mask */
1940 0xffffffff, /* dst_mask */
1941 FALSE), /* pcrel_offset */
1942 HOWTO (R_NDS32_GOT_SUFF, /* type */
1944 2, /* size (0 = byte, 1 = short, 2 = long) */
1946 FALSE, /* pc_relative */
1948 complain_overflow_dont,/* complain_on_overflow */
1949 nds32_elf_ignore_reloc,/* special_function */
1950 "R_NDS32_GOT_SUFF", /* name */
1951 FALSE, /* partial_inplace */
1952 0xffffffff, /* src_mask */
1953 0xffffffff, /* dst_mask */
1954 FALSE), /* pcrel_offset */
1955 HOWTO (R_NDS32_GOTOFF_SUFF, /* type */
1957 2, /* size (0 = byte, 1 = short, 2 = long) */
1959 FALSE, /* pc_relative */
1961 complain_overflow_bitfield, /* complain_on_overflow */
1962 nds32_elf_ignore_reloc,/* special_function */
1963 "R_NDS32_GOTOFF_SUFF", /* name */
1964 FALSE, /* partial_inplace */
1965 0xffffffff, /* src_mask */
1966 0xffffffff, /* dst_mask */
1967 FALSE), /* pcrel_offset */
1968 HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */
1970 2, /* size (0 = byte, 1 = short, 2 = long) */
1972 FALSE, /* pc_relative */
1974 complain_overflow_dont,/* complain_on_overflow */
1975 nds32_elf_ignore_reloc,/* special_function */
1976 "R_NDS32_PLT_GOT_SUFF",/* name */
1977 FALSE, /* partial_inplace */
1978 0xffffffff, /* src_mask */
1979 0xffffffff, /* dst_mask */
1980 FALSE), /* pcrel_offset */
1981 HOWTO (R_NDS32_MULCALL_SUFF, /* type */
1983 2, /* size (0 = byte, 1 = short, 2 = long) */
1985 FALSE, /* pc_relative */
1987 complain_overflow_dont,/* complain_on_overflow */
1988 nds32_elf_ignore_reloc,/* special_function */
1989 "R_NDS32_MULCALL_SUFF",/* name */
1990 FALSE, /* partial_inplace */
1991 0xffffffff, /* src_mask */
1992 0xffffffff, /* dst_mask */
1993 FALSE), /* pcrel_offset */
1994 HOWTO (R_NDS32_PTR, /* type */
1996 2, /* size (0 = byte, 1 = short, 2 = long) */
1998 FALSE, /* pc_relative */
2000 complain_overflow_dont,/* complain_on_overflow */
2001 nds32_elf_ignore_reloc,/* special_function */
2002 "R_NDS32_PTR", /* name */
2003 FALSE, /* partial_inplace */
2004 0xffffffff, /* src_mask */
2005 0xffffffff, /* dst_mask */
2006 FALSE), /* pcrel_offset */
2007 HOWTO (R_NDS32_PTR_COUNT, /* type */
2009 2, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont,/* complain_on_overflow */
2014 nds32_elf_ignore_reloc,/* special_function */
2015 "R_NDS32_PTR_COUNT", /* name */
2016 FALSE, /* partial_inplace */
2017 0xffffffff, /* src_mask */
2018 0xffffffff, /* dst_mask */
2019 FALSE), /* pcrel_offset */
2020 HOWTO (R_NDS32_PTR_RESOLVED, /* type */
2022 2, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE, /* pc_relative */
2026 complain_overflow_dont,/* complain_on_overflow */
2027 nds32_elf_ignore_reloc,/* special_function */
2028 "R_NDS32_PTR_RESOLVED",/* name */
2029 FALSE, /* partial_inplace */
2030 0xffffffff, /* src_mask */
2031 0xffffffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2033 HOWTO (R_NDS32_PLTBLOCK, /* type */
2035 2, /* size (0 = byte, 1 = short, 2 = long) */
2037 FALSE, /* pc_relative */
2039 complain_overflow_dont,/* complain_on_overflow */
2040 nds32_elf_ignore_reloc,/* special_function */
2041 "R_NDS32_PLTBLOCK", /* name */
2042 FALSE, /* partial_inplace */
2043 0xffffffff, /* src_mask */
2044 0xffffffff, /* dst_mask */
2045 FALSE), /* pcrel_offset */
2046 HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */
2048 2, /* size (0 = byte, 1 = short, 2 = long) */
2050 FALSE, /* pc_relative */
2052 complain_overflow_dont,/* complain_on_overflow */
2053 nds32_elf_ignore_reloc,/* special_function */
2054 "R_NDS32_RELAX_REGION_BEGIN", /* name */
2055 FALSE, /* partial_inplace */
2056 0xffffffff, /* src_mask */
2057 0xffffffff, /* dst_mask */
2058 FALSE), /* pcrel_offset */
2059 HOWTO (R_NDS32_RELAX_REGION_END, /* type */
2061 2, /* size (0 = byte, 1 = short, 2 = long) */
2063 FALSE, /* pc_relative */
2065 complain_overflow_dont,/* complain_on_overflow */
2066 nds32_elf_ignore_reloc,/* special_function */
2067 "R_NDS32_RELAX_REGION_END", /* name */
2068 FALSE, /* partial_inplace */
2069 0xffffffff, /* src_mask */
2070 0xffffffff, /* dst_mask */
2071 FALSE), /* pcrel_offset */
2072 HOWTO (R_NDS32_MINUEND, /* type */
2074 2, /* size (0 = byte, 1 = short, 2 = long) */
2076 FALSE, /* pc_relative */
2078 complain_overflow_dont,/* complain_on_overflow */
2079 nds32_elf_ignore_reloc,/* special_function */
2080 "R_NDS32_MINUEND", /* name */
2081 FALSE, /* partial_inplace */
2082 0xffffffff, /* src_mask */
2083 0xffffffff, /* dst_mask */
2084 FALSE), /* pcrel_offset */
2085 HOWTO (R_NDS32_SUBTRAHEND, /* type */
2087 2, /* size (0 = byte, 1 = short, 2 = long) */
2089 FALSE, /* pc_relative */
2091 complain_overflow_dont,/* complain_on_overflow */
2092 nds32_elf_ignore_reloc,/* special_function */
2093 "R_NDS32_SUBTRAHEND", /* name */
2094 FALSE, /* partial_inplace */
2095 0xffffffff, /* src_mask */
2096 0xffffffff, /* dst_mask */
2097 FALSE), /* pcrel_offset */
2098 HOWTO (R_NDS32_DIFF8, /* type */
2100 0, /* size (0 = byte, 1 = short, 2 = long) */
2102 FALSE, /* pc_relative */
2104 complain_overflow_dont,/* complain_on_overflow */
2105 nds32_elf_ignore_reloc,/* special_function */
2106 "R_NDS32_DIFF8", /* name */
2107 FALSE, /* partial_inplace */
2108 0x000000ff, /* src_mask */
2109 0x000000ff, /* dst_mask */
2110 FALSE), /* pcrel_offset */
2111 HOWTO (R_NDS32_DIFF16, /* type */
2113 1, /* size (0 = byte, 1 = short, 2 = long) */
2115 FALSE, /* pc_relative */
2117 complain_overflow_dont,/* complain_on_overflow */
2118 nds32_elf_ignore_reloc,/* special_function */
2119 "R_NDS32_DIFF16", /* name */
2120 FALSE, /* partial_inplace */
2121 0x0000ffff, /* src_mask */
2122 0x0000ffff, /* dst_mask */
2123 FALSE), /* pcrel_offset */
2124 HOWTO (R_NDS32_DIFF32, /* type */
2126 2, /* size (0 = byte, 1 = short, 2 = long) */
2128 FALSE, /* pc_relative */
2130 complain_overflow_dont,/* complain_on_overflow */
2131 nds32_elf_ignore_reloc,/* special_function */
2132 "R_NDS32_DIFF32", /* name */
2133 FALSE, /* partial_inplace */
2134 0xffffffff, /* src_mask */
2135 0xffffffff, /* dst_mask */
2136 FALSE), /* pcrel_offset */
2137 HOWTO (R_NDS32_DIFF_ULEB128, /* type */
2139 0, /* size (0 = byte, 1 = short, 2 = long) */
2141 FALSE, /* pc_relative */
2143 complain_overflow_dont,/* complain_on_overflow */
2144 nds32_elf_ignore_reloc,/* special_function */
2145 "R_NDS32_DIFF_ULEB128",/* name */
2146 FALSE, /* partial_inplace */
2147 0xffffffff, /* src_mask */
2148 0xffffffff, /* dst_mask */
2149 FALSE), /* pcrel_offset */
2150 HOWTO (R_NDS32_DATA, /* type */
2152 2, /* size (0 = byte, 1 = short, 2 = long) */
2154 FALSE, /* pc_relative */
2156 complain_overflow_dont,/* complain_on_overflow */
2157 nds32_elf_ignore_reloc,/* special_function */
2158 "R_NDS32_DATA", /* name */
2159 FALSE, /* partial_inplace */
2160 0xffffffff, /* src_mask */
2161 0xffffffff, /* dst_mask */
2162 FALSE), /* pcrel_offset */
2163 HOWTO (R_NDS32_TRAN, /* type */
2165 2, /* size (0 = byte, 1 = short, 2 = long) */
2167 FALSE, /* pc_relative */
2169 complain_overflow_dont,/* complain_on_overflow */
2170 nds32_elf_ignore_reloc,/* special_function */
2171 "R_NDS32_TRAN", /* name */
2172 FALSE, /* partial_inplace */
2173 0xffffffff, /* src_mask */
2174 0xffffffff, /* dst_mask */
2175 FALSE), /* pcrel_offset */
2176 HOWTO (R_NDS32_TLS_LE_ADD, /* type */
2178 2, /* size (0 = byte, 1 = short, 2 = long) */
2180 FALSE, /* pc_relative */
2182 complain_overflow_dont, /* complain_on_overflow */
2183 nds32_elf_ignore_reloc, /* special_function */
2184 "R_NDS32_TLS_LE_ADD", /* name */
2185 FALSE, /* partial_inplace */
2186 0xffffffff, /* src_mask */
2187 0xffffffff, /* dst_mask */
2188 FALSE), /* pcrel_offset */
2189 HOWTO (R_NDS32_TLS_LE_LS, /* type */
2191 2, /* size (0 = byte, 1 = short, 2 = long) */
2193 FALSE, /* pc_relative */
2195 complain_overflow_dont, /* complain_on_overflow */
2196 nds32_elf_ignore_reloc, /* special_function */
2197 "R_NDS32_TLS_LE_LS", /* name */
2198 FALSE, /* partial_inplace */
2199 0xffffffff, /* src_mask */
2200 0xffffffff, /* dst_mask */
2201 FALSE), /* pcrel_offset */
2202 HOWTO (R_NDS32_EMPTY, /* type */
2204 2, /* size (0 = byte, 1 = short, 2 = long) */
2206 FALSE, /* pc_relative */
2208 complain_overflow_dont, /* complain_on_overflow */
2209 nds32_elf_ignore_reloc, /* special_function */
2210 "R_NDS32_EMPTY", /* name */
2211 FALSE, /* partial_inplace */
2212 0xffffffff, /* src_mask */
2213 0xffffffff, /* dst_mask */
2214 FALSE), /* pcrel_offset */
2218 /* nds32_insertion_sort sorts an array with nmemb elements of size size.
2219 This prototype is the same as qsort (). */
2222 nds32_insertion_sort (void *base, size_t nmemb, size_t size,
2223 int (*compar) (const void *lhs, const void *rhs))
2225 char *ptr = (char *) base;
2227 char *tmp = xmalloc (size);
2229 /* If i is less than j, i is inserted before j.
2231 |---- j ----- i --------------|
2236 for (i = 1; i < (int) nmemb; i++)
2238 for (j = (i - 1); j >= 0; j--)
2239 if (compar (ptr + i * size, ptr + j * size) >= 0)
2245 continue; /* i is in order. */
2247 memcpy (tmp, ptr + i * size, size);
2248 memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size);
2249 memcpy (ptr + j * size, tmp, size);
2254 /* Sort relocation by r_offset.
2256 We didn't use qsort () in stdlib, because quick-sort is not a stable sorting
2257 algorithm. Relocations at the same r_offset must keep their order.
2258 For example, RELAX_ENTRY must be the very first relocation entry.
2260 Currently, this function implements insertion-sort.
2262 FIXME: If we already sort them in assembler, why bother sort them
2266 compar_reloc (const void *lhs, const void *rhs)
2268 const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs;
2269 const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs;
2271 if (l->r_offset > r->r_offset)
2273 else if (l->r_offset == r->r_offset)
2279 /* Functions listed below are only used for old relocs.
2280 * nds32_elf_9_pcrel_reloc
2281 * nds32_elf_do_9_pcrel_reloc
2282 * nds32_elf_hi20_reloc
2283 * nds32_elf_relocate_hi20
2284 * nds32_elf_lo12_reloc
2285 * nds32_elf_sda15_reloc
2286 * nds32_elf_generic_reloc
2289 /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */
2291 static bfd_reloc_status_type
2292 nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2293 void *data, asection *input_section, bfd *output_bfd,
2294 char **error_message ATTRIBUTE_UNUSED)
2296 /* This part is from bfd_elf_generic_reloc. */
2297 if (output_bfd != (bfd *) NULL
2298 && (symbol->flags & BSF_SECTION_SYM) == 0
2299 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2301 reloc_entry->address += input_section->output_offset;
2302 return bfd_reloc_ok;
2305 if (output_bfd != NULL)
2307 /* FIXME: See bfd_perform_relocation. Is this right? */
2308 return bfd_reloc_continue;
2311 return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto,
2313 data, reloc_entry->address,
2316 + symbol->section->output_section->vma
2317 + symbol->section->output_offset),
2318 reloc_entry->addend);
2321 /* Utility to actually perform an R_NDS32_9_PCREL reloc. */
2322 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
2324 static bfd_reloc_status_type
2325 nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto,
2326 asection *input_section, bfd_byte *data,
2328 asection *symbol_section ATTRIBUTE_UNUSED,
2329 bfd_vma symbol_value, bfd_vma addend)
2331 bfd_signed_vma relocation;
2333 bfd_reloc_status_type status;
2335 /* Sanity check the address (offset in section). */
2336 if (offset > bfd_get_section_limit (abfd, input_section))
2337 return bfd_reloc_outofrange;
2339 relocation = symbol_value + addend;
2340 /* Make it pc relative. */
2341 relocation -= (input_section->output_section->vma
2342 + input_section->output_offset);
2343 /* These jumps mask off the lower two bits of the current address
2344 before doing pcrel calculations. */
2345 relocation -= (offset & -(bfd_vma) 2);
2347 if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1)
2348 status = bfd_reloc_overflow;
2350 status = bfd_reloc_ok;
2352 x = bfd_getb16 (data + offset);
2354 relocation >>= howto->rightshift;
2355 relocation <<= howto->bitpos;
2356 x = (x & ~howto->dst_mask)
2357 | (((x & howto->src_mask) + relocation) & howto->dst_mask);
2359 bfd_putb16 ((bfd_vma) x, data + offset);
2364 /* Handle the R_NDS32_HI20_[SU]LO relocs.
2365 HI20_SLO is for the add3 and load/store with displacement instructions.
2366 HI20 is for the or3 instruction.
2367 For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to
2368 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
2369 we must add one to the high 16 bytes (which will get subtracted off when
2370 the low 16 bits are added).
2371 These relocs have to be done in combination with an R_NDS32_LO12 reloc
2372 because there is a carry from the LO12 to the HI20. Here we just save
2373 the information we need; we do the actual relocation when we see the LO12.
2374 This code is copied from the elf32-mips.c. We also support an arbitrary
2375 number of HI20 relocs to be associated with a single LO12 reloc. The
2376 assembler sorts the relocs to ensure each HI20 immediately precedes its
2377 LO12. However if there are multiple copies, the assembler may not find
2378 the real LO12 so it picks the first one it finds. */
2382 struct nds32_hi20 *next;
2387 static struct nds32_hi20 *nds32_hi20_list;
2389 static bfd_reloc_status_type
2390 nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2391 asymbol *symbol, void *data, asection *input_section,
2392 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2394 bfd_reloc_status_type ret;
2396 struct nds32_hi20 *n;
2398 /* This part is from bfd_elf_generic_reloc.
2399 If we're relocating, and this an external symbol, we don't want
2400 to change anything. */
2401 if (output_bfd != (bfd *) NULL
2402 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0)
2404 reloc_entry->address += input_section->output_offset;
2405 return bfd_reloc_ok;
2408 /* Sanity check the address (offset in section). */
2409 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2410 return bfd_reloc_outofrange;
2413 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2414 ret = bfd_reloc_undefined;
2416 if (bfd_is_com_section (symbol->section))
2419 relocation = symbol->value;
2421 relocation += symbol->section->output_section->vma;
2422 relocation += symbol->section->output_offset;
2423 relocation += reloc_entry->addend;
2425 /* Save the information, and let LO12 do the actual relocation. */
2426 n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n);
2428 return bfd_reloc_outofrange;
2430 n->addr = (bfd_byte *) data + reloc_entry->address;
2431 n->addend = relocation;
2432 n->next = nds32_hi20_list;
2433 nds32_hi20_list = n;
2435 if (output_bfd != (bfd *) NULL)
2436 reloc_entry->address += input_section->output_offset;
2441 /* Handle an NDS32 ELF HI20 reloc. */
2444 nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED,
2445 int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi,
2446 Elf_Internal_Rela *rello, bfd_byte *contents,
2452 insn = bfd_getb32 (contents + relhi->r_offset);
2454 addlo = bfd_getb32 (contents + rello->r_offset);
2457 addend += ((insn & 0xfffff) << 20) + addlo;
2459 insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff);
2460 bfd_putb32 (insn, contents + relhi->r_offset);
2463 /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit
2464 inplace relocation; this function exists in order to do the
2465 R_NDS32_HI20_[SU]LO relocation described above. */
2467 static bfd_reloc_status_type
2468 nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol,
2469 void *data, asection *input_section, bfd *output_bfd,
2470 char **error_message)
2472 /* This part is from bfd_elf_generic_reloc.
2473 If we're relocating, and this an external symbol, we don't want
2474 to change anything. */
2475 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2476 && reloc_entry->addend == 0)
2478 reloc_entry->address += input_section->output_offset;
2479 return bfd_reloc_ok;
2482 if (nds32_hi20_list != NULL)
2484 struct nds32_hi20 *l;
2486 l = nds32_hi20_list;
2491 unsigned long vallo;
2492 struct nds32_hi20 *next;
2494 /* Do the HI20 relocation. Note that we actually don't need
2495 to know anything about the LO12 itself, except where to
2496 find the low 12 bits of the addend needed by the LO12. */
2497 insn = bfd_getb32 (l->addr);
2498 vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address);
2500 switch (reloc_entry->howto->type)
2502 case R_NDS32_LO12S3:
2506 case R_NDS32_LO12S2:
2510 case R_NDS32_LO12S1:
2514 case R_NDS32_LO12S0:
2519 val = ((insn & 0xfffff) << 12) + vallo;
2522 insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff);
2523 bfd_putb32 ((bfd_vma) insn, l->addr);
2530 nds32_hi20_list = NULL;
2533 /* Now do the LO12 reloc in the usual way.
2534 ??? It would be nice to call bfd_elf_generic_reloc here,
2535 but we have partial_inplace set. bfd_elf_generic_reloc will
2536 pass the handling back to bfd_install_relocation which will install
2537 a section relative addend which is wrong. */
2538 return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
2539 input_section, output_bfd, error_message);
2542 /* Do generic partial_inplace relocation.
2543 This is a local replacement for bfd_elf_generic_reloc. */
2545 static bfd_reloc_status_type
2546 nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry,
2547 asymbol *symbol, void *data, asection *input_section,
2548 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2550 bfd_reloc_status_type ret;
2552 bfd_byte *inplace_address;
2554 /* This part is from bfd_elf_generic_reloc.
2555 If we're relocating, and this an external symbol, we don't want
2556 to change anything. */
2557 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2558 && reloc_entry->addend == 0)
2560 reloc_entry->address += input_section->output_offset;
2561 return bfd_reloc_ok;
2564 /* Now do the reloc in the usual way.
2565 ??? It would be nice to call bfd_elf_generic_reloc here,
2566 but we have partial_inplace set. bfd_elf_generic_reloc will
2567 pass the handling back to bfd_install_relocation which will install
2568 a section relative addend which is wrong. */
2570 /* Sanity check the address (offset in section). */
2571 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
2572 return bfd_reloc_outofrange;
2575 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2576 ret = bfd_reloc_undefined;
2578 if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
2581 relocation = symbol->value;
2583 /* Only do this for a final link. */
2584 if (output_bfd == (bfd *) NULL)
2586 relocation += symbol->section->output_section->vma;
2587 relocation += symbol->section->output_offset;
2590 relocation += reloc_entry->addend;
2591 switch (reloc_entry->howto->type)
2593 case R_NDS32_LO12S3:
2597 case R_NDS32_LO12S2:
2601 case R_NDS32_LO12S1:
2605 case R_NDS32_LO12S0:
2611 inplace_address = (bfd_byte *) data + reloc_entry->address;
2614 x = ((x & ~reloc_entry->howto->dst_mask) | \
2615 (((x & reloc_entry->howto->src_mask) + relocation) & \
2616 reloc_entry->howto->dst_mask))
2618 switch (reloc_entry->howto->size)
2622 short x = bfd_getb16 (inplace_address);
2625 bfd_putb16 ((bfd_vma) x, inplace_address);
2630 unsigned long x = bfd_getb32 (inplace_address);
2633 bfd_putb32 ((bfd_vma) x, inplace_address);
2640 if (output_bfd != (bfd *) NULL)
2641 reloc_entry->address += input_section->output_offset;
2646 /* Handle the R_NDS32_SDA15 reloc.
2647 This reloc is used to compute the address of objects in the small data area
2648 and to perform loads and stores from that area.
2649 The lower 15 bits are sign extended and added to the register specified
2650 in the instruction, which is assumed to point to _SDA_BASE_.
2652 Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on
2653 the access size, this must be taken care of. */
2655 static bfd_reloc_status_type
2656 nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2657 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
2658 asection *input_section, bfd *output_bfd,
2659 char **error_message ATTRIBUTE_UNUSED)
2661 /* This part is from bfd_elf_generic_reloc. */
2662 if (output_bfd != (bfd *) NULL
2663 && (symbol->flags & BSF_SECTION_SYM) == 0
2664 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2666 reloc_entry->address += input_section->output_offset;
2667 return bfd_reloc_ok;
2670 if (output_bfd != NULL)
2672 /* FIXME: See bfd_perform_relocation. Is this right? */
2673 return bfd_reloc_continue;
2676 /* FIXME: not sure what to do here yet. But then again, the linker
2677 may never call us. */
2681 /* nds32_elf_ignore_reloc is the special function for
2682 relocation types which don't need to be relocated
2683 like relaxation relocation types.
2684 This function simply return bfd_reloc_ok when it is
2687 static bfd_reloc_status_type
2688 nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2689 asymbol *symbol ATTRIBUTE_UNUSED,
2690 void *data ATTRIBUTE_UNUSED, asection *input_section,
2691 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2693 if (output_bfd != NULL)
2694 reloc_entry->address += input_section->output_offset;
2696 return bfd_reloc_ok;
2700 /* Map BFD reloc types to NDS32 ELF reloc types. */
2702 struct nds32_reloc_map_entry
2704 bfd_reloc_code_real_type bfd_reloc_val;
2705 unsigned char elf_reloc_val;
2708 static const struct nds32_reloc_map_entry nds32_reloc_map[] =
2710 {BFD_RELOC_NONE, R_NDS32_NONE},
2711 {BFD_RELOC_16, R_NDS32_16_RELA},
2712 {BFD_RELOC_32, R_NDS32_32_RELA},
2713 {BFD_RELOC_NDS32_20, R_NDS32_20_RELA},
2714 {BFD_RELOC_NDS32_5, R_NDS32_5_RELA},
2715 {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA},
2716 {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA},
2717 {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA},
2718 {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA},
2719 {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA},
2720 {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA},
2721 {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA},
2722 {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA},
2723 {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA},
2724 {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA},
2725 {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA},
2726 {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA},
2727 {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA},
2728 {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA},
2729 {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA},
2730 {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA},
2731 {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT},
2732 {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY},
2734 {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20},
2735 {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL},
2736 {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL},
2737 {BFD_RELOC_NDS32_COPY, R_NDS32_COPY},
2738 {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT},
2739 {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT},
2740 {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE},
2741 {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF},
2742 {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20},
2743 {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20},
2744 {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12},
2745 {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15},
2746 {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19},
2747 {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20},
2748 {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12},
2749 {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20},
2750 {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12},
2751 {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15},
2752 {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19},
2753 {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16},
2754 {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL},
2755 {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1},
2756 {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2},
2757 {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3},
2758 {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4},
2759 {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5},
2760 {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6},
2761 {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1},
2762 {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2},
2763 {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3},
2764 {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4},
2765 {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5},
2766 {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6},
2767 {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7},
2768 {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE},
2769 {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA},
2770 {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA},
2771 {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA},
2772 {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA},
2773 {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20},
2774 {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12},
2775 {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20},
2776 {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12},
2777 {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15},
2778 {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19},
2779 {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20},
2780 {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA},
2781 {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA},
2782 {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA},
2783 {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA},
2784 {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA},
2785 {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA},
2786 {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA},
2787 {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA},
2788 {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA},
2789 {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA},
2790 {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA},
2791 {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA},
2792 {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA},
2793 {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF},
2794 {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF},
2795 {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA},
2796 {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA},
2797 {BFD_RELOC_NDS32_PTR, R_NDS32_PTR},
2798 {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT},
2799 {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF},
2800 {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED},
2801 {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY},
2802 {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF},
2803 {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK},
2804 {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN},
2805 {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END},
2806 {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND},
2807 {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND},
2808 {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY},
2810 {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8},
2811 {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16},
2812 {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32},
2813 {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128},
2814 {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA},
2815 {BFD_RELOC_NDS32_DATA, R_NDS32_DATA},
2816 {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN},
2817 {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA},
2818 {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA},
2819 {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20},
2820 {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12},
2821 {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD},
2822 {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS},
2823 {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20},
2824 {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2},
2825 {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF},
2826 {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20},
2827 {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0},
2828 {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1},
2829 {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2},
2834 static reloc_howto_type *
2835 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2840 for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++)
2841 if (nds32_elf_howto_table[i].name != NULL
2842 && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0)
2843 return &nds32_elf_howto_table[i];
2845 for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++)
2846 if (nds32_elf_relax_howto_table[i].name != NULL
2847 && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0)
2848 return &nds32_elf_relax_howto_table[i];
2853 static reloc_howto_type *
2854 bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code)
2856 if (code < R_NDS32_RELAX_ENTRY)
2858 BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table));
2859 return &nds32_elf_howto_table[code];
2863 BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY)
2864 < ARRAY_SIZE (nds32_elf_relax_howto_table));
2865 return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY];
2869 static reloc_howto_type *
2870 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2871 bfd_reloc_code_real_type code)
2875 for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++)
2877 if (nds32_reloc_map[i].bfd_reloc_val == code)
2878 return bfd_elf32_bfd_reloc_type_table_lookup
2879 (nds32_reloc_map[i].elf_reloc_val);
2885 /* Set the howto pointer for an NDS32 ELF reloc. */
2888 nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2889 Elf_Internal_Rela *dst)
2891 enum elf_nds32_reloc_type r_type;
2893 r_type = ELF32_R_TYPE (dst->r_info);
2894 if (r_type > R_NDS32_GNU_VTENTRY)
2896 /* xgettext:c-format */
2897 _bfd_error_handler (_("%pB: invalid NDS32 reloc number: %d"), abfd, r_type);
2900 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
2904 nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2905 Elf_Internal_Rela *dst)
2907 BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE)
2908 || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY)
2909 && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max)));
2910 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info));
2913 /* Support for core dump NOTE sections.
2914 Reference to include/linux/elfcore.h in Linux. */
2917 nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2922 switch (note->descsz)
2925 /* Linux/NDS32 32-bit, ABI1 */
2928 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2931 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
2939 /* Linux/NDS32 32-bit */
2942 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2945 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
2956 /* Make a ".reg" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2958 size, note->descpos + offset);
2962 nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2964 switch (note->descsz)
2969 /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */
2970 elf_tdata (abfd)->core->program =
2971 _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
2972 elf_tdata (abfd)->core->command =
2973 _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
2980 /* Note that for some reason, a spurious space is tacked
2981 onto the end of the args in some (at least one anyway)
2982 implementations, so strip it off if it exists. */
2984 char *command = elf_tdata (abfd)->core->command;
2985 int n = strlen (command);
2987 if (0 < n && command[n - 1] == ' ')
2988 command[n - 1] = '\0';
2994 /* Hook called by the linker routine which adds symbols from an object
2995 file. We must handle the special NDS32 section numbers here.
2996 We also keep watching for whether we need to create the sdata special
3000 nds32_elf_add_symbol_hook (bfd *abfd,
3001 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3002 Elf_Internal_Sym *sym,
3003 const char **namep ATTRIBUTE_UNUSED,
3004 flagword *flagsp ATTRIBUTE_UNUSED,
3005 asection **secp, bfd_vma *valp)
3007 switch (sym->st_shndx)
3010 /* Common symbols less than the GP size are automatically
3011 treated as SHN_MIPS_SCOMMON symbols. */
3012 if (sym->st_size > elf_gp_size (abfd)
3013 || ELF_ST_TYPE (sym->st_info) == STT_TLS)
3016 /* st_value is the alignemnt constraint.
3017 That might be its actual size if it is an array or structure. */
3018 switch (sym->st_value)
3021 *secp = bfd_make_section_old_way (abfd, ".scommon_b");
3024 *secp = bfd_make_section_old_way (abfd, ".scommon_h");
3027 *secp = bfd_make_section_old_way (abfd, ".scommon_w");
3030 *secp = bfd_make_section_old_way (abfd, ".scommon_d");
3036 (*secp)->flags |= SEC_IS_COMMON;
3037 *valp = sym->st_size;
3045 /* This function can figure out the best location for a base register to access
3046 data relative to this base register
3048 sda_d0: size of first DOUBLE WORD data section
3049 sda_w0: size of first WORD data section
3050 sda_h0: size of first HALF WORD data section
3051 sda_b : size of BYTE data section
3052 sda_hi: size of second HALF WORD data section
3053 sda_w1: size of second WORD data section
3054 sda_d1: size of second DOUBLE WORD data section
3056 offset (always positive) from the beginning of sda_d0 if OK
3057 a negative error value if fail
3059 these 7 sections have to be located back to back if exist
3060 a pass in 0 value for non-existing section */
3062 /* Due to the interpretation of simm15 field of load/store depending on
3063 data accessing size, the organization of base register relative data shall
3064 like the following figure
3065 -------------------------------------------
3066 | DOUBLE WORD sized data (range +/- 128K)
3067 -------------------------------------------
3068 | WORD sized data (range +/- 64K)
3069 -------------------------------------------
3070 | HALF WORD sized data (range +/- 32K)
3071 -------------------------------------------
3072 | BYTE sized data (range +/- 16K)
3073 -------------------------------------------
3074 | HALF WORD sized data (range +/- 32K)
3075 -------------------------------------------
3076 | WORD sized data (range +/- 64K)
3077 -------------------------------------------
3078 | DOUBLE WORD sized data (range +/- 128K)
3079 -------------------------------------------
3080 Its base register shall be set to access these data freely. */
3082 /* We have to figure out the SDA_BASE value, so that we can adjust the
3083 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
3084 BFD. If we can't find it, we're stuck. We cache it in the ELF
3085 target data. We don't need to adjust the symbol value for an
3086 external symbol if we are producing relocatable output. */
3088 static asection *sda_rela_sec = NULL;
3090 #define SDA_SECTION_NUM 10
3092 static bfd_reloc_status_type
3093 nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info,
3094 bfd_vma *psb, bfd_boolean add_symbol)
3097 struct elf_nds32_link_hash_table *table;
3098 struct bfd_link_hash_entry *h, *h2;
3099 long unsigned int total = 0;
3101 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
3102 if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak))
3104 asection *first = NULL, *final = NULL, *temp;
3106 /* The first section must be 4-byte aligned to promise _SDA_BASE_ being
3107 4 byte-aligned. Therefore, it has to set the first section ".data"
3109 static const char sec_name[SDA_SECTION_NUM][10] =
3111 ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b",
3112 ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d"
3116 if (output_bfd->sections == NULL)
3118 *psb = elf_gp (output_bfd);
3119 return bfd_reloc_ok;
3122 /* Get the first and final section. */
3123 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3125 temp = bfd_get_section_by_name (output_bfd, sec_name[i]);
3126 if (temp && !first && (temp->size != 0 || temp->rawsize != 0))
3128 if (temp && (temp->size != 0 || temp->rawsize != 0))
3131 /* Summarize the sections in order to check if joining .bss. */
3132 if (temp && temp->size != 0)
3133 total += temp->size;
3134 else if (temp && temp->rawsize != 0)
3135 total += temp->rawsize;
3140 /* Check .bss size. */
3141 temp = bfd_get_section_by_name (output_bfd, ".bss");
3144 if (temp->size != 0)
3145 total += temp->size;
3146 else if (temp->rawsize != 0)
3147 total += temp->rawsize;
3149 if (total < 0x80000)
3151 if (!first && (temp->size != 0 || temp->rawsize != 0))
3153 if ((temp->size != 0 || temp->rawsize != 0))
3160 /* The middle of data region. */
3161 sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2;
3163 /* Find the section sda_base located. */
3165 while (i < sizeof (sec_name) / sizeof (sec_name [0]))
3167 final = bfd_get_section_by_name (output_bfd, sec_name[i]);
3168 if (final && (final->size != 0 || final->rawsize != 0)
3169 && sda_base >= final->vma)
3180 /* There is not any data section in output bfd, and set _SDA_BASE_ in
3181 first output section. */
3182 first = output_bfd->sections;
3183 while (first && first->size == 0 && first->rawsize == 0)
3184 first = first->next;
3187 *psb = elf_gp (output_bfd);
3188 return bfd_reloc_ok;
3190 sda_base = first->vma + first->rawsize;
3193 sda_base -= first->vma;
3194 sda_base = sda_base & (~7);
3196 if (!_bfd_generic_link_add_one_symbol
3197 (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first,
3198 (bfd_vma) sda_base, (const char *) NULL, FALSE,
3199 get_elf_backend_data (output_bfd)->collect, &h))
3202 sda_rela_sec = first;
3204 table = nds32_elf_hash_table (info);
3205 relax_fp_as_gp = table->relax_fp_as_gp;
3208 h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME,
3209 FALSE, FALSE, FALSE);
3210 /* Define a weak FP_BASE_NAME here to prevent the undefined symbol.
3211 And set FP equal to SDA_BASE to do relaxation for
3212 la $fp, _FP_BASE_. */
3213 if (!_bfd_generic_link_add_one_symbol
3214 (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK,
3215 first, (bfd_vma) sda_base, (const char *) NULL,
3216 FALSE, get_elf_backend_data (output_bfd)->collect, &h2))
3226 elf_gp (output_bfd) = (h->u.def.value
3227 + h->u.def.section->output_section->vma
3228 + h->u.def.section->output_offset);
3232 _bfd_error_handler (_("error: Can't find symbol: _SDA_BASE_."));
3233 return bfd_reloc_dangerous;
3237 *psb = h->u.def.value + h->u.def.section->output_section->vma
3238 + h->u.def.section->output_offset;
3239 return bfd_reloc_ok;
3243 /* Return size of a PLT entry. */
3244 #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE
3247 /* Create an entry in an nds32 ELF linker hash table. */
3249 static struct bfd_hash_entry *
3250 nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3251 struct bfd_hash_table *table,
3254 struct elf_nds32_link_hash_entry *ret;
3256 ret = (struct elf_nds32_link_hash_entry *) entry;
3258 /* Allocate the structure if it has not already been allocated by a
3261 ret = (struct elf_nds32_link_hash_entry *)
3262 bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry));
3265 return (struct bfd_hash_entry *) ret;
3267 /* Call the allocation method of the superclass. */
3268 ret = (struct elf_nds32_link_hash_entry *)
3269 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string);
3273 struct elf_nds32_link_hash_entry *eh;
3275 eh = (struct elf_nds32_link_hash_entry *) ret;
3276 eh->dyn_relocs = NULL;
3277 eh->tls_type = GOT_UNKNOWN;
3280 return (struct bfd_hash_entry *) ret;
3283 /* Create an nds32 ELF linker hash table. */
3285 static struct bfd_link_hash_table *
3286 nds32_elf_link_hash_table_create (bfd *abfd)
3288 struct elf_nds32_link_hash_table *ret;
3290 bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table);
3292 ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt);
3297 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3298 nds32_elf_link_hash_newfunc,
3299 sizeof (struct elf_nds32_link_hash_entry),
3306 return &ret->root.root;
3309 /* Create dynamic sections when linking against a dynamic object. */
3312 nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3314 struct elf_nds32_link_hash_table *htab;
3315 flagword flags, pltflags;
3316 register asection *s;
3317 const struct elf_backend_data *bed;
3318 int ptralign = 2; /* 32-bit */
3320 bed = get_elf_backend_data (abfd);
3322 htab = nds32_elf_hash_table (info);
3324 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3325 .rel[a].bss sections. */
3327 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3328 | SEC_LINKER_CREATED);
3331 pltflags |= SEC_CODE;
3332 if (bed->plt_not_loaded)
3333 pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
3334 if (bed->plt_readonly)
3335 pltflags |= SEC_READONLY;
3337 s = bfd_make_section (abfd, ".plt");
3338 htab->root.splt = s;
3340 || !bfd_set_section_flags (abfd, s, pltflags)
3341 || !bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3344 if (bed->want_plt_sym)
3346 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3348 struct bfd_link_hash_entry *bh = NULL;
3349 struct elf_link_hash_entry *h;
3351 if (!(_bfd_generic_link_add_one_symbol
3352 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
3353 (bfd_vma) 0, (const char *) NULL, FALSE,
3354 get_elf_backend_data (abfd)->collect, &bh)))
3357 h = (struct elf_link_hash_entry *) bh;
3359 h->type = STT_OBJECT;
3361 if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h))
3365 s = bfd_make_section (abfd,
3366 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
3367 htab->root.srelplt = s;
3369 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3370 || !bfd_set_section_alignment (abfd, s, ptralign))
3373 if (htab->root.sgot == NULL && !_bfd_elf_create_got_section (abfd, info))
3377 const char *secname;
3382 for (sec = abfd->sections; sec; sec = sec->next)
3384 secflags = bfd_get_section_flags (abfd, sec);
3385 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
3386 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
3388 secname = bfd_get_section_name (abfd, sec);
3389 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
3390 strcpy (relname, ".rela");
3391 strcat (relname, secname);
3392 if (bfd_get_section_by_name (abfd, secname))
3394 s = bfd_make_section (abfd, relname);
3396 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3397 || !bfd_set_section_alignment (abfd, s, ptralign))
3402 if (bed->want_dynbss)
3404 /* The .dynbss section is a place to put symbols which are defined
3405 by dynamic objects, are referenced by regular objects, and are
3406 not functions. We must allocate space for them in the process
3407 image and use a R_*_COPY reloc to tell the dynamic linker to
3408 initialize them at run time. The linker script puts the .dynbss
3409 section into the .bss section of the final image. */
3410 s = bfd_make_section (abfd, ".dynbss");
3413 || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
3415 /* The .rel[a].bss section holds copy relocs. This section is not
3416 normally needed. We need to create it here, though, so that the
3417 linker will map it to an output section. We can't just create it
3418 only if we need it, because we will not know whether we need it
3419 until we have seen all the input files, and the first time the
3420 main linker code calls BFD after examining all the input files
3421 (size_dynamic_sections) the input sections have already been
3422 mapped to the output sections. If the section turns out not to
3423 be needed, we can discard it later. We will never need this
3424 section when generating a shared object, since they do not use
3426 if (!bfd_link_pic (info))
3428 s = bfd_make_section (abfd, (bed->default_use_rela_p
3429 ? ".rela.bss" : ".rel.bss"));
3432 || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
3433 || !bfd_set_section_alignment (abfd, s, ptralign))
3441 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3443 nds32_elf_copy_indirect_symbol (struct bfd_link_info *info,
3444 struct elf_link_hash_entry *dir,
3445 struct elf_link_hash_entry *ind)
3447 struct elf_nds32_link_hash_entry *edir, *eind;
3449 edir = (struct elf_nds32_link_hash_entry *) dir;
3450 eind = (struct elf_nds32_link_hash_entry *) ind;
3452 if (eind->dyn_relocs != NULL)
3454 if (edir->dyn_relocs != NULL)
3456 struct elf_dyn_relocs **pp;
3457 struct elf_dyn_relocs *p;
3459 if (ind->root.type == bfd_link_hash_indirect)
3462 /* Add reloc counts against the weak sym to the strong sym
3463 list. Merge any entries against the same section. */
3464 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
3466 struct elf_dyn_relocs *q;
3468 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3469 if (q->sec == p->sec)
3471 q->pc_count += p->pc_count;
3472 q->count += p->count;
3479 *pp = edir->dyn_relocs;
3482 edir->dyn_relocs = eind->dyn_relocs;
3483 eind->dyn_relocs = NULL;
3486 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3489 /* Find dynamic relocs for H that apply to read-only sections. */
3492 readonly_dynrelocs (struct elf_link_hash_entry *h)
3494 struct elf_dyn_relocs *p;
3496 for (p = elf32_nds32_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3498 asection *s = p->sec->output_section;
3500 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3506 /* Adjust a symbol defined by a dynamic object and referenced by a
3507 regular object. The current definition is in some section of the
3508 dynamic object, but we're not including those sections. We have to
3509 change the definition to something the rest of the link can
3513 nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3514 struct elf_link_hash_entry *h)
3516 struct elf_nds32_link_hash_table *htab;
3519 unsigned int power_of_two;
3521 dynobj = elf_hash_table (info)->dynobj;
3523 /* Make sure we know what is going on here. */
3524 BFD_ASSERT (dynobj != NULL
3527 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
3530 /* If this is a function, put it in the procedure linkage table. We
3531 will fill in the contents of the procedure linkage table later,
3532 when we know the address of the .got section. */
3533 if (h->type == STT_FUNC || h->needs_plt)
3535 if (!bfd_link_pic (info)
3538 && h->root.type != bfd_link_hash_undefweak
3539 && h->root.type != bfd_link_hash_undefined)
3541 /* This case can occur if we saw a PLT reloc in an input
3542 file, but the symbol was never referred to by a dynamic
3543 object. In such a case, we don't actually need to build
3544 a procedure linkage table, and we can just do a PCREL
3546 h->plt.offset = (bfd_vma) - 1;
3553 h->plt.offset = (bfd_vma) - 1;
3555 /* If this is a weak symbol, and there is a real definition, the
3556 processor independent code will have arranged for us to see the
3557 real definition first, and we can just use the same value. */
3558 if (h->is_weakalias)
3560 struct elf_link_hash_entry *def = weakdef (h);
3561 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
3562 h->root.u.def.section = def->root.u.def.section;
3563 h->root.u.def.value = def->root.u.def.value;
3567 /* This is a reference to a symbol defined by a dynamic object which
3568 is not a function. */
3570 /* If we are creating a shared library, we must presume that the
3571 only references to the symbol are via the global offset table.
3572 For such cases we need not do anything here; the relocations will
3573 be handled correctly by relocate_section. */
3574 if (bfd_link_pic (info))
3577 /* If there are no references to this symbol that do not use the
3578 GOT, we don't need to generate a copy reloc. */
3579 if (!h->non_got_ref)
3582 /* If -z nocopyreloc was given, we won't generate them either. */
3583 if (0 && info->nocopyreloc)
3589 /* If we don't find any dynamic relocs in read-only sections, then
3590 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3591 if (0 && !readonly_dynrelocs (h))
3597 /* We must allocate the symbol in our .dynbss section, which will
3598 become part of the .bss section of the executable. There will be
3599 an entry for this symbol in the .dynsym section. The dynamic
3600 object will contain position independent code, so all references
3601 from the dynamic object to this symbol will go through the global
3602 offset table. The dynamic linker will use the .dynsym entry to
3603 determine the address it must put in the global offset table, so
3604 both the dynamic object and the regular object will refer to the
3605 same memory location for the variable. */
3607 htab = nds32_elf_hash_table (info);
3609 BFD_ASSERT (s != NULL);
3611 /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker
3612 to copy the initial value out of the dynamic object and into the
3613 runtime process image. We need to remember the offset into the
3614 .rela.bss section we are going to use. */
3615 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3619 srel = htab->srelbss;
3620 BFD_ASSERT (srel != NULL);
3621 srel->size += sizeof (Elf32_External_Rela);
3625 /* We need to figure out the alignment required for this symbol. I
3626 have no idea how ELF linkers handle this. */
3627 power_of_two = bfd_log2 (h->size);
3628 if (power_of_two > 3)
3631 /* Apply the required alignment. */
3632 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3633 if (power_of_two > bfd_get_section_alignment (dynobj, s))
3635 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
3639 /* Define the symbol as being at this point in the section. */
3640 h->root.u.def.section = s;
3641 h->root.u.def.value = s->size;
3643 /* Increment the section size to make room for the symbol. */
3649 /* Allocate space in .plt, .got and associated reloc sections for
3653 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3655 struct bfd_link_info *info;
3656 struct elf_nds32_link_hash_table *htab;
3657 struct elf_nds32_link_hash_entry *eh;
3658 struct elf_dyn_relocs *p;
3660 if (h->root.type == bfd_link_hash_indirect)
3663 if (h->root.type == bfd_link_hash_warning)
3664 /* When warning symbols are created, they **replace** the "real"
3665 entry in the hash table, thus we never get to see the real
3666 symbol in a hash traversal. So look at it now. */
3667 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3669 info = (struct bfd_link_info *) inf;
3670 htab = nds32_elf_hash_table (info);
3672 eh = (struct elf_nds32_link_hash_entry *) h;
3674 if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
3676 /* Make sure this symbol is output as a dynamic symbol.
3677 Undefined weak syms won't yet be marked as dynamic. */
3678 if (h->dynindx == -1 && !h->forced_local)
3680 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3684 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
3686 asection *s = htab->root.splt;
3688 /* If this is the first .plt entry, make room for the special
3691 s->size += PLT_ENTRY_SIZE;
3693 h->plt.offset = s->size;
3695 /* If this symbol is not defined in a regular file, and we are
3696 not generating a shared library, then set the symbol to this
3697 location in the .plt. This is required to make function
3698 pointers compare as equal between the normal executable and
3699 the shared library. */
3700 if (!bfd_link_pic (info) && !h->def_regular)
3702 h->root.u.def.section = s;
3703 h->root.u.def.value = h->plt.offset;
3706 /* Make room for this entry. */
3707 s->size += PLT_ENTRY_SIZE;
3709 /* We also need to make an entry in the .got.plt section, which
3710 will be placed in the .got section by the linker script. */
3711 htab->root.sgotplt->size += 4;
3713 /* We also need to make an entry in the .rel.plt section. */
3714 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
3718 h->plt.offset = (bfd_vma) - 1;
3724 h->plt.offset = (bfd_vma) - 1;
3728 if (h->got.refcount > 0)
3732 int tls_type = elf32_nds32_hash_entry (h)->tls_type;
3734 /* Make sure this symbol is output as a dynamic symbol.
3735 Undefined weak syms won't yet be marked as dynamic. */
3736 if (h->dynindx == -1 && !h->forced_local)
3738 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3742 s = htab->root.sgot;
3743 h->got.offset = s->size;
3745 if (tls_type == GOT_UNKNOWN)
3747 else if (tls_type == GOT_NORMAL
3748 || tls_type == GOT_TLS_IE)
3749 /* Need a GOT slot. */
3752 dyn = htab->root.dynamic_sections_created;
3753 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
3754 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3757 h->got.offset = (bfd_vma) - 1;
3759 if (eh->dyn_relocs == NULL)
3762 /* In the shared -Bsymbolic case, discard space allocated for
3763 dynamic pc-relative relocs against symbols which turn out to be
3764 defined in regular objects. For the normal shared case, discard
3765 space for pc-relative relocs that have become local due to symbol
3766 visibility changes. */
3768 if (bfd_link_pic (info))
3770 if (h->def_regular && (h->forced_local || info->symbolic))
3772 struct elf_dyn_relocs **pp;
3774 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
3776 p->count -= p->pc_count;
3787 /* For the non-shared case, discard space for relocs against
3788 symbols which turn out to need copy relocs or are not dynamic. */
3793 || (htab->root.dynamic_sections_created
3794 && (h->root.type == bfd_link_hash_undefweak
3795 || h->root.type == bfd_link_hash_undefined))))
3797 /* Make sure this symbol is output as a dynamic symbol.
3798 Undefined weak syms won't yet be marked as dynamic. */
3799 if (h->dynindx == -1 && !h->forced_local)
3801 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3805 /* If that succeeded, we know we'll be keeping all the
3807 if (h->dynindx != -1)
3811 eh->dyn_relocs = NULL;
3816 /* Finally, allocate space. */
3817 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3819 asection *sreloc = elf_section_data (p->sec)->sreloc;
3820 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3826 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
3827 read-only sections. */
3830 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
3834 if (h->root.type == bfd_link_hash_indirect)
3837 sec = readonly_dynrelocs (h);
3840 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
3842 info->flags |= DF_TEXTREL;
3843 info->callbacks->minfo
3844 (_("%pB: dynamic relocation against `%T' in read-only section `%pA'\n"),
3845 sec->owner, h->root.root.string, sec);
3847 /* Not an error, just cut short the traversal. */
3853 /* Set the sizes of the dynamic sections. */
3856 nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3857 struct bfd_link_info *info)
3859 struct elf_nds32_link_hash_table *htab;
3865 htab = nds32_elf_hash_table (info);
3866 dynobj = htab->root.dynobj;
3867 BFD_ASSERT (dynobj != NULL);
3869 if (htab->root.dynamic_sections_created)
3871 /* Set the contents of the .interp section to the interpreter. */
3872 if (bfd_link_executable (info) && !info->nointerp)
3874 s = bfd_get_section_by_name (dynobj, ".interp");
3875 BFD_ASSERT (s != NULL);
3876 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3877 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3881 /* Set up .got offsets for local syms, and space for local dynamic
3883 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3885 bfd_signed_vma *local_got;
3886 bfd_signed_vma *end_local_got;
3887 bfd_size_type locsymcount;
3888 Elf_Internal_Shdr *symtab_hdr;
3891 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
3894 for (s = ibfd->sections; s != NULL; s = s->next)
3896 struct elf_dyn_relocs *p;
3898 for (p = ((struct elf_dyn_relocs *)
3899 elf_section_data (s)->local_dynrel);
3900 p != NULL; p = p->next)
3902 if (!bfd_is_abs_section (p->sec)
3903 && bfd_is_abs_section (p->sec->output_section))
3905 /* Input section has been discarded, either because
3906 it is a copy of a linkonce section or due to
3907 linker script /DISCARD/, so we'll be discarding
3910 else if (p->count != 0)
3912 srel = elf_section_data (p->sec)->sreloc;
3913 srel->size += p->count * sizeof (Elf32_External_Rela);
3914 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3915 info->flags |= DF_TEXTREL;
3920 local_got = elf_local_got_refcounts (ibfd);
3924 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3925 locsymcount = symtab_hdr->sh_info;
3926 end_local_got = local_got + locsymcount;
3927 s = htab->root.sgot;
3928 srel = htab->root.srelgot;
3929 for (; local_got < end_local_got; ++local_got)
3933 *local_got = s->size;
3935 if (bfd_link_pic (info))
3936 srel->size += sizeof (Elf32_External_Rela);
3939 *local_got = (bfd_vma) - 1;
3943 /* Allocate global sym .plt and .got entries, and space for global
3944 sym dynamic relocs. */
3945 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info);
3947 /* We now have determined the sizes of the various dynamic sections.
3948 Allocate memory for them. */
3950 for (s = dynobj->sections; s != NULL; s = s->next)
3952 if ((s->flags & SEC_LINKER_CREATED) == 0)
3955 if (s == htab->root.splt)
3957 /* Strip this section if we don't need it; see the
3960 else if (s == htab->root.sgot)
3962 got_size += s->size;
3964 else if (s == htab->root.sgotplt)
3966 got_size += s->size;
3968 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
3970 if (s->size != 0 && s != htab->root.srelplt)
3973 /* We use the reloc_count field as a counter if we need
3974 to copy relocs into the output file. */
3979 /* It's not one of our sections, so don't allocate space. */
3985 /* If we don't need this section, strip it from the
3986 output file. This is mostly to handle .rela.bss and
3987 .rela.plt. We must create both sections in
3988 create_dynamic_sections, because they must be created
3989 before the linker maps input sections to output
3990 sections. The linker does that before
3991 adjust_dynamic_symbol is called, and it is that
3992 function which decides whether anything needs to go
3993 into these sections. */
3994 s->flags |= SEC_EXCLUDE;
3998 /* Allocate memory for the section contents. We use bfd_zalloc
3999 here in case unused entries are not reclaimed before the
4000 section's contents are written out. This should not happen,
4001 but this way if it does, we get a R_NDS32_NONE reloc instead
4003 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4004 if (s->contents == NULL)
4009 if (htab->root.dynamic_sections_created)
4011 /* Add some entries to the .dynamic section. We fill in the
4012 values later, in nds32_elf_finish_dynamic_sections, but we
4013 must add the entries now so that we get the correct size for
4014 the .dynamic section. The DT_DEBUG entry is filled in by the
4015 dynamic linker and used by the debugger. */
4016 #define add_dynamic_entry(TAG, VAL) \
4017 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4019 if (!bfd_link_pic (info))
4021 if (!add_dynamic_entry (DT_DEBUG, 0))
4025 if (htab->root.splt->size != 0)
4027 if (!add_dynamic_entry (DT_PLTGOT, 0)
4028 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4029 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4030 || !add_dynamic_entry (DT_JMPREL, 0))
4036 if (!add_dynamic_entry (DT_RELA, 0)
4037 || !add_dynamic_entry (DT_RELASZ, 0)
4038 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4041 /* If any dynamic relocs apply to a read-only section,
4042 then we need a DT_TEXTREL entry. */
4043 if ((info->flags & DF_TEXTREL) == 0)
4044 elf_link_hash_traverse (&htab->root, maybe_set_textrel,
4047 if ((info->flags & DF_TEXTREL) != 0)
4049 if (!add_dynamic_entry (DT_TEXTREL, 0))
4054 #undef add_dynamic_entry
4059 static bfd_reloc_status_type
4060 nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd,
4061 bfd_vma relocation, bfd_byte *location)
4065 bfd_reloc_status_type flag;
4066 unsigned int rightshift = howto->rightshift;
4067 unsigned int bitpos = howto->bitpos;
4069 /* If the size is negative, negate RELOCATION. This isn't very
4071 if (howto->size < 0)
4072 relocation = -relocation;
4074 /* Get the value we are going to relocate. */
4075 size = bfd_get_reloc_size (howto);
4082 return bfd_reloc_ok;
4084 x = bfd_getb16 (location);
4087 x = bfd_getb32 (location);
4091 /* Check for overflow. FIXME: We may drop bits during the addition
4092 which we don't check for. We must either check at every single
4093 operation, which would be tedious, or we must do the computations
4094 in a type larger than bfd_vma, which would be inefficient. */
4095 flag = bfd_reloc_ok;
4096 if (howto->complain_on_overflow != complain_overflow_dont)
4098 bfd_vma addrmask, fieldmask, signmask, ss;
4101 /* Get the values to be added together. For signed and unsigned
4102 relocations, we assume that all values should be truncated to
4103 the size of an address. For bitfields, all the bits matter.
4104 See also bfd_check_overflow. */
4105 fieldmask = N_ONES (howto->bitsize);
4106 signmask = ~fieldmask;
4107 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
4108 a = (relocation & addrmask) >> rightshift;
4109 b = (x & howto->src_mask & addrmask) >> bitpos;
4111 switch (howto->complain_on_overflow)
4113 case complain_overflow_signed:
4114 /* If any sign bits are set, all sign bits must be set.
4115 That is, A must be a valid negative address after
4117 signmask = ~(fieldmask >> 1);
4120 case complain_overflow_bitfield:
4121 /* Much like the signed check, but for a field one bit
4122 wider. We allow a bitfield to represent numbers in the
4123 range -2**n to 2**n-1, where n is the number of bits in the
4124 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4125 can't overflow, which is exactly what we want. */
4127 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
4128 flag = bfd_reloc_overflow;
4130 /* We only need this next bit of code if the sign bit of B
4131 is below the sign bit of A. This would only happen if
4132 SRC_MASK had fewer bits than BITSIZE. Note that if
4133 SRC_MASK has more bits than BITSIZE, we can get into
4134 trouble; we would need to verify that B is in range, as
4135 we do for A above. */
4136 ss = ((~howto->src_mask) >> 1) & howto->src_mask;
4139 /* Set all the bits above the sign bit. */
4142 /* Now we can do the addition. */
4145 /* See if the result has the correct sign. Bits above the
4146 sign bit are junk now; ignore them. If the sum is
4147 positive, make sure we did not have all negative inputs;
4148 if the sum is negative, make sure we did not have all
4149 positive inputs. The test below looks only at the sign
4150 bits, and it really just
4151 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4153 We mask with addrmask here to explicitly allow an address
4154 wrap-around. The Linux kernel relies on it, and it is
4155 the only way to write assembler code which can run when
4156 loaded at a location 0x80000000 away from the location at
4157 which it is linked. */
4158 if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask)
4159 flag = bfd_reloc_overflow;
4163 case complain_overflow_unsigned:
4164 /* Checking for an unsigned overflow is relatively easy:
4165 trim the addresses and add, and trim the result as well.
4166 Overflow is normally indicated when the result does not
4167 fit in the field. However, we also need to consider the
4168 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4169 input is 0x80000000, and bfd_vma is only 32 bits; then we
4170 will get sum == 0, but there is an overflow, since the
4171 inputs did not fit in the field. Instead of doing a
4172 separate test, we can check for this by or-ing in the
4173 operands when testing for the sum overflowing its final
4175 sum = (a + b) & addrmask;
4176 if ((a | b | sum) & signmask)
4177 flag = bfd_reloc_overflow;
4185 /* Put RELOCATION in the right bits. */
4186 relocation >>= (bfd_vma) rightshift;
4187 relocation <<= (bfd_vma) bitpos;
4189 /* Add RELOCATION to the right bits of X. */
4191 Because the relaxation may generate duplicate relocation at one address,
4192 an addition to immediate in the instruction may cause the relocation added
4194 This bug should be fixed in assembler, but a check is also needed here. */
4195 if (howto->partial_inplace)
4196 x = ((x & ~howto->dst_mask)
4197 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
4199 x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask));
4202 /* Put the relocated value back in the object file. */
4212 bfd_putb16 (x, location);
4215 bfd_putb32 (x, location);
4222 static bfd_reloc_status_type
4223 nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
4224 asection *input_section, bfd_byte *contents,
4225 bfd_vma address, bfd_vma value, bfd_vma addend)
4229 /* Sanity check the address. */
4230 if (address > bfd_get_section_limit (input_bfd, input_section))
4231 return bfd_reloc_outofrange;
4233 /* This function assumes that we are dealing with a basic relocation
4234 against a symbol. We want to compute the value of the symbol to
4235 relocate to. This is just VALUE, the value of the symbol, plus
4236 ADDEND, any addend associated with the reloc. */
4237 relocation = value + addend;
4239 /* If the relocation is PC relative, we want to set RELOCATION to
4240 the distance between the symbol (currently in RELOCATION) and the
4241 location we are relocating. Some targets (e.g., i386-aout)
4242 arrange for the contents of the section to be the negative of the
4243 offset of the location within the section; for such targets
4244 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4245 simply leave the contents of the section as zero; for such
4246 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4247 need to subtract out the offset of the location within the
4248 section (which is just ADDRESS). */
4249 if (howto->pc_relative)
4251 relocation -= (input_section->output_section->vma
4252 + input_section->output_offset);
4253 if (howto->pcrel_offset)
4254 relocation -= address;
4257 return nds32_relocate_contents (howto, input_bfd, relocation,
4258 contents + address);
4262 nds32_elf_output_symbol_hook (struct bfd_link_info *info,
4264 Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED,
4265 asection *input_sec,
4266 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4269 FILE *sym_ld_script = NULL;
4270 struct elf_nds32_link_hash_table *table;
4272 table = nds32_elf_hash_table (info);
4273 sym_ld_script = table->sym_ld_script;
4277 if (!h || !name || *name == '\0')
4280 if (input_sec->flags & SEC_EXCLUDE)
4283 if (!check_start_export_sym)
4285 fprintf (sym_ld_script, "SECTIONS\n{\n");
4286 check_start_export_sym = 1;
4289 if (h->root.type == bfd_link_hash_defined
4290 || h->root.type == bfd_link_hash_defweak)
4292 if (!h->root.u.def.section->output_section)
4295 if (bfd_is_const_section (input_sec))
4296 source = input_sec->name;
4298 source = input_sec->owner->filename;
4300 fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n",
4301 h->root.root.string,
4302 (long) (h->root.u.def.value
4303 + h->root.u.def.section->output_section->vma
4304 + h->root.u.def.section->output_offset), source);
4310 /* Relocate an NDS32/D ELF section.
4311 There is some attempt to make this function usable for many architectures,
4312 both for RELA and REL type relocs, if only to serve as a learning tool.
4314 The RELOCATE_SECTION function is called by the new ELF backend linker
4315 to handle the relocations for a section.
4317 The relocs are always passed as Rela structures; if the section
4318 actually uses Rel structures, the r_addend field will always be
4321 This function is responsible for adjust the section contents as
4322 necessary, and (if using Rela relocs and generating a
4323 relocatable output file) adjusting the reloc addend as
4326 This function does not have to worry about setting the reloc
4327 address or the reloc symbol index.
4329 LOCAL_SYMS is a pointer to the swapped in local symbols.
4331 LOCAL_SECTIONS is an array giving the section in the input file
4332 corresponding to the st_shndx field of each local symbol.
4334 The global hash table entry for the global symbols can be found
4335 via elf_sym_hashes (input_bfd).
4337 When generating relocatable output, this function must handle
4338 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4339 going to be the section symbol corresponding to the output
4340 section, which means that the addend must be adjusted
4344 dtpoff_base (struct bfd_link_info *info)
4346 /* If tls_sec is NULL, we should have signalled an error already. */
4347 if (elf_hash_table (info)->tls_sec == NULL)
4349 return elf_hash_table (info)->tls_sec->vma;
4353 nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
4354 struct bfd_link_info * info,
4356 asection * input_section,
4357 bfd_byte * contents,
4358 Elf_Internal_Rela * relocs,
4359 Elf_Internal_Sym * local_syms,
4360 asection ** local_sections)
4362 Elf_Internal_Shdr *symtab_hdr;
4363 struct elf_link_hash_entry **sym_hashes;
4364 Elf_Internal_Rela *rel, *relend;
4365 bfd_boolean ret = TRUE; /* Assume success. */
4367 bfd_reloc_status_type r;
4368 const char *errmsg = NULL;
4370 struct elf_nds32_link_hash_table *htab;
4372 bfd_vma *local_got_offsets;
4373 asection *sgot, *splt, *sreloc;
4374 bfd_vma high_address;
4375 struct elf_nds32_link_hash_table *table;
4376 int eliminate_gc_relocs;
4377 bfd_vma fpbase_addr;
4379 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4380 sym_hashes = elf_sym_hashes (input_bfd);
4381 htab = nds32_elf_hash_table (info);
4382 high_address = bfd_get_section_limit (input_bfd, input_section);
4384 dynobj = htab->root.dynobj;
4385 local_got_offsets = elf_local_got_offsets (input_bfd);
4387 sgot = htab->root.sgot;
4388 splt = htab->root.splt;
4392 relend = relocs + input_section->reloc_count;
4394 table = nds32_elf_hash_table (info);
4395 eliminate_gc_relocs = table->eliminate_gc_relocs;
4396 /* By this time, we can adjust the value of _SDA_BASE_. */
4397 if ((!bfd_link_relocatable (info)))
4399 is_SDA_BASE_set = 1;
4400 r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE);
4401 if (r != bfd_reloc_ok)
4405 if (is_ITB_BASE_set == 0)
4407 /* Set the _ITB_BASE_. */
4408 if (!nds32_elf_ex9_itb_base (info))
4410 _bfd_error_handler (_("%pB: error: Cannot set _ITB_BASE_"),
4412 bfd_set_error (bfd_error_bad_value);
4416 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
4417 if (!nds32_elf_ifc_reloc ())
4418 _bfd_error_handler (_("error: IFC relocation error."));
4420 /* Relocation for .ex9.itable. */
4421 if (table->target_optimize & NDS32_RELAX_EX9_ON
4422 || (table->ex9_import_file && table->update_ex9_table))
4423 nds32_elf_ex9_reloc_jmp (info);
4425 /* Use gp as fp to prevent truncated fit. Because in relaxation time
4426 the fp value is set as gp, and it has be reverted for instruction
4428 fpbase_addr = elf_gp (output_bfd);
4430 for (rel = relocs; rel < relend; rel++)
4432 enum elf_nds32_reloc_type r_type;
4433 reloc_howto_type *howto = NULL;
4434 unsigned long r_symndx;
4435 struct elf_link_hash_entry *h = NULL;
4436 Elf_Internal_Sym *sym = NULL;
4440 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
4441 ensure it's zero (we use REL relocs, not RELA). Therefore this
4442 should be assigning zero to `addend', but for clarity we use
4445 bfd_vma addend = rel->r_addend;
4446 bfd_vma offset = rel->r_offset;
4448 r_type = ELF32_R_TYPE (rel->r_info);
4449 if (r_type >= R_NDS32_max)
4451 /* xgettext:c-format */
4452 _bfd_error_handler (_("%pB: error: unknown relocation type %d."),
4454 bfd_set_error (bfd_error_bad_value);
4459 if (r_type == R_NDS32_GNU_VTENTRY
4460 || r_type == R_NDS32_GNU_VTINHERIT
4461 || r_type == R_NDS32_NONE
4462 || r_type == R_NDS32_RELA_GNU_VTENTRY
4463 || r_type == R_NDS32_RELA_GNU_VTINHERIT
4464 || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA)
4465 || r_type == R_NDS32_DATA
4466 || r_type == R_NDS32_TRAN
4467 || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7))
4470 /* If we enter the fp-as-gp region. Resolve the address
4472 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN
4473 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4477 /* Distance to relocation of best fp-base is encoded in R_SYM. */
4478 dist = rel->r_addend >> 16;
4479 fpbase_addr = calculate_memory_address (input_bfd, rel + dist,
4480 local_syms, symtab_hdr);
4482 else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END
4483 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
4485 fpbase_addr = elf_gp (output_bfd);
4488 if (((r_type >= R_NDS32_DWARF2_OP1_RELA
4489 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4490 || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info))
4493 howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
4494 r_symndx = ELF32_R_SYM (rel->r_info);
4496 /* This is a final link. */
4501 if (r_symndx < symtab_hdr->sh_info)
4504 sym = local_syms + r_symndx;
4505 sec = local_sections[r_symndx];
4507 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4508 addend = rel->r_addend;
4512 /* External symbol. */
4513 bfd_boolean warned, ignored, unresolved_reloc;
4514 int symndx = r_symndx - symtab_hdr->sh_info;
4516 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4517 r_symndx, symtab_hdr, sym_hashes, h, sec,
4518 relocation, unresolved_reloc, warned,
4521 /* la $fp, _FP_BASE_ is per-function (region).
4522 Handle it specially. */
4523 switch ((int) r_type)
4525 case R_NDS32_SDA19S0_RELA:
4526 case R_NDS32_SDA15S0_RELA:
4527 case R_NDS32_20_RELA:
4528 if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string,
4531 relocation = fpbase_addr;
4538 if (bfd_link_relocatable (info))
4540 /* This is a relocatable link. We don't have to change
4541 anything, unless the reloc is against a section symbol,
4542 in which case we have to adjust according to where the
4543 section symbol winds up in the output section. */
4544 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
4545 rel->r_addend += sec->output_offset + sym->st_value;
4550 /* Sanity check the address. */
4551 if (offset > high_address)
4553 r = bfd_reloc_outofrange;
4557 if ((r_type >= R_NDS32_DWARF2_OP1_RELA
4558 && r_type <= R_NDS32_DWARF2_LEB_RELA)
4559 || r_type >= R_NDS32_RELAX_ENTRY)
4562 switch ((int) r_type)
4564 case R_NDS32_GOTOFF:
4565 /* Relocation is relative to the start of the global offset
4566 table (for ld24 rx, #uimm24), e.g. access at label+addend
4568 ld24 rx. #label@GOTOFF + addend
4570 case R_NDS32_GOTOFF_HI20:
4571 case R_NDS32_GOTOFF_LO12:
4572 case R_NDS32_GOTOFF_LO15:
4573 case R_NDS32_GOTOFF_LO19:
4574 BFD_ASSERT (sgot != NULL);
4576 relocation -= elf_gp (output_bfd);
4579 case R_NDS32_9_PLTREL:
4580 case R_NDS32_25_PLTREL:
4581 /* Relocation is to the entry for this symbol in the
4582 procedure linkage table. */
4584 /* The native assembler will generate a 25_PLTREL reloc
4585 for a local symbol if you assemble a call from one
4586 section to another when using -K pic. */
4590 if (h->forced_local)
4593 /* We didn't make a PLT entry for this symbol. This
4594 happens when statically linking PIC code, or when
4595 using -Bsymbolic. */
4596 if (h->plt.offset == (bfd_vma) - 1)
4599 relocation = (splt->output_section->vma
4600 + splt->output_offset + h->plt.offset);
4603 case R_NDS32_PLT_GOTREL_HI20:
4604 case R_NDS32_PLT_GOTREL_LO12:
4605 case R_NDS32_PLT_GOTREL_LO15:
4606 case R_NDS32_PLT_GOTREL_LO19:
4607 case R_NDS32_PLT_GOTREL_LO20:
4608 if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1)
4610 /* We didn't make a PLT entry for this symbol. This
4611 happens when statically linking PIC code, or when
4612 using -Bsymbolic. */
4613 relocation -= elf_gp (output_bfd);
4617 relocation = (splt->output_section->vma
4618 + splt->output_offset + h->plt.offset);
4620 relocation -= elf_gp (output_bfd);
4623 case R_NDS32_PLTREL_HI20:
4624 case R_NDS32_PLTREL_LO12:
4626 /* Relocation is to the entry for this symbol in the
4627 procedure linkage table. */
4629 /* The native assembler will generate a 25_PLTREL reloc
4630 for a local symbol if you assemble a call from one
4631 section to another when using -K pic. */
4635 if (h->forced_local)
4638 if (h->plt.offset == (bfd_vma) - 1)
4639 /* We didn't make a PLT entry for this symbol. This
4640 happens when statically linking PIC code, or when
4641 using -Bsymbolic. */
4647 relocation = (splt->output_section->vma
4648 + splt->output_offset
4649 + h->plt.offset + 4)
4650 - (input_section->output_section->vma
4651 + input_section->output_offset
4656 case R_NDS32_GOTPC20:
4657 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4658 ld24 rx,#_GLOBAL_OFFSET_TABLE_ */
4659 relocation = elf_gp (output_bfd);
4662 case R_NDS32_GOTPC_HI20:
4663 case R_NDS32_GOTPC_LO12:
4665 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4667 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
4668 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4671 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
4672 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4674 relocation = elf_gp (output_bfd);
4675 relocation -= (input_section->output_section->vma
4676 + input_section->output_offset + rel->r_offset);
4682 case R_NDS32_GOT_HI20:
4683 case R_NDS32_GOT_LO12:
4684 case R_NDS32_GOT_LO15:
4685 case R_NDS32_GOT_LO19:
4686 /* Relocation is to the entry for this symbol in the global
4688 BFD_ASSERT (sgot != NULL);
4695 off = h->got.offset;
4696 BFD_ASSERT (off != (bfd_vma) - 1);
4697 dyn = htab->root.dynamic_sections_created;
4698 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4699 bfd_link_pic (info),
4701 || (bfd_link_pic (info)
4704 || h->forced_local) && h->def_regular))
4706 /* This is actually a static link, or it is a
4707 -Bsymbolic link and the symbol is defined
4708 locally, or the symbol was forced to be local
4709 because of a version file. We must initialize
4710 this entry in the global offset table. Since the
4711 offset must always be a multiple of 4, we use the
4712 least significant bit to record whether we have
4713 initialized it already.
4715 When doing a dynamic link, we create a .rela.got
4716 relocation entry to initialize the value. This
4717 is done in the finish_dynamic_symbol routine. */
4722 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4726 relocation = sgot->output_section->vma + sgot->output_offset + off
4727 - elf_gp (output_bfd);
4734 BFD_ASSERT (local_got_offsets != NULL
4735 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
4737 off = local_got_offsets[r_symndx];
4739 /* The offset must always be a multiple of 4. We use
4740 the least significant bit to record whether we have
4741 already processed this entry. */
4746 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4748 if (bfd_link_pic (info))
4751 Elf_Internal_Rela outrel;
4753 /* We need to generate a R_NDS32_RELATIVE reloc
4754 for the dynamic linker. */
4755 srelgot = htab->root.srelgot;
4756 BFD_ASSERT (srelgot != NULL);
4758 outrel.r_offset = (elf_gp (output_bfd)
4759 + sgot->output_offset + off);
4760 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4761 outrel.r_addend = relocation;
4762 loc = srelgot->contents;
4764 srelgot->reloc_count * sizeof (Elf32_External_Rela);
4765 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4766 ++srelgot->reloc_count;
4768 local_got_offsets[r_symndx] |= 1;
4770 relocation = sgot->output_section->vma + sgot->output_offset + off
4771 - elf_gp (output_bfd);
4776 case R_NDS32_16_RELA:
4777 case R_NDS32_20_RELA:
4778 case R_NDS32_5_RELA:
4779 case R_NDS32_32_RELA:
4780 case R_NDS32_9_PCREL_RELA:
4781 case R_NDS32_WORD_9_PCREL_RELA:
4782 case R_NDS32_10_UPCREL_RELA:
4783 case R_NDS32_15_PCREL_RELA:
4784 case R_NDS32_17_PCREL_RELA:
4785 case R_NDS32_25_PCREL_RELA:
4786 case R_NDS32_HI20_RELA:
4787 case R_NDS32_LO12S3_RELA:
4788 case R_NDS32_LO12S2_RELA:
4789 case R_NDS32_LO12S2_DP_RELA:
4790 case R_NDS32_LO12S2_SP_RELA:
4791 case R_NDS32_LO12S1_RELA:
4792 case R_NDS32_LO12S0_RELA:
4793 case R_NDS32_LO12S0_ORI_RELA:
4794 if (bfd_link_pic (info) && r_symndx != 0
4795 && (input_section->flags & SEC_ALLOC) != 0
4796 && (eliminate_gc_relocs == 0
4797 || (sec && (sec->flags & SEC_EXCLUDE) == 0))
4798 && ((r_type != R_NDS32_9_PCREL_RELA
4799 && r_type != R_NDS32_WORD_9_PCREL_RELA
4800 && r_type != R_NDS32_10_UPCREL_RELA
4801 && r_type != R_NDS32_15_PCREL_RELA
4802 && r_type != R_NDS32_17_PCREL_RELA
4803 && r_type != R_NDS32_25_PCREL_RELA
4804 && !(r_type == R_NDS32_32_RELA
4805 && strcmp (input_section->name, ".eh_frame") == 0))
4806 || (h != NULL && h->dynindx != -1
4807 && (!info->symbolic || !h->def_regular))))
4809 Elf_Internal_Rela outrel;
4810 bfd_boolean skip, relocate;
4813 /* When generating a shared object, these relocations
4814 are copied into the output file to be resolved at run
4821 name = bfd_elf_string_from_elf_section
4822 (input_bfd, elf_elfheader (input_bfd)->e_shstrndx,
4823 elf_section_data (input_section)->rela.hdr->sh_name);
4827 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
4828 && strcmp (bfd_get_section_name (input_bfd,
4832 sreloc = bfd_get_section_by_name (dynobj, name);
4833 BFD_ASSERT (sreloc != NULL);
4839 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4843 if (outrel.r_offset == (bfd_vma) - 1)
4845 else if (outrel.r_offset == (bfd_vma) - 2)
4846 skip = TRUE, relocate = TRUE;
4847 outrel.r_offset += (input_section->output_section->vma
4848 + input_section->output_offset);
4851 memset (&outrel, 0, sizeof outrel);
4852 else if (r_type == R_NDS32_17_PCREL_RELA
4853 || r_type == R_NDS32_15_PCREL_RELA
4854 || r_type == R_NDS32_25_PCREL_RELA)
4856 BFD_ASSERT (h != NULL && h->dynindx != -1);
4857 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4858 outrel.r_addend = rel->r_addend;
4862 /* h->dynindx may be -1 if this symbol was marked to
4865 || ((info->symbolic || h->dynindx == -1)
4869 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
4870 outrel.r_addend = relocation + rel->r_addend;
4874 BFD_ASSERT (h->dynindx != -1);
4875 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4876 outrel.r_addend = rel->r_addend;
4880 loc = sreloc->contents;
4881 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
4882 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4883 ++sreloc->reloc_count;
4885 /* If this reloc is against an external symbol, we do
4886 not want to fiddle with the addend. Otherwise, we
4887 need to include the symbol value so that it becomes
4888 an addend for the dynamic reloc. */
4894 case R_NDS32_25_ABS_RELA:
4895 if (bfd_link_pic (info))
4898 (_("%pB: warning: cannot deal R_NDS32_25_ABS_RELA in shared "
4899 "mode."), input_bfd);
4904 case R_NDS32_9_PCREL:
4905 r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section,
4907 sec, relocation, addend);
4912 Elf_Internal_Rela *lorel;
4914 /* We allow an arbitrary number of HI20 relocs before the
4915 LO12 reloc. This permits gcc to emit the HI and LO relocs
4917 for (lorel = rel + 1;
4919 && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++)
4922 && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3
4923 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2
4924 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1
4925 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0))
4927 nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel,
4928 contents, relocation + addend);
4932 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4933 contents, offset, relocation,
4939 case R_NDS32_GOT17S2_RELA:
4940 case R_NDS32_GOT15S2_RELA:
4944 BFD_ASSERT (sgot != NULL);
4950 off = h->got.offset;
4951 BFD_ASSERT (off != (bfd_vma) - 1);
4953 dyn = htab->root.dynamic_sections_created;
4954 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL
4955 (dyn, bfd_link_pic (info), h)
4956 || (bfd_link_pic (info)
4962 /* This is actually a static link, or it is a
4963 -Bsymbolic link and the symbol is defined
4964 locally, or the symbol was forced to be local
4965 because of a version file. We must initialize
4966 this entry in the global offset table. Since the
4967 offset must always be a multiple of 4, we use the
4968 least significant bit to record whether we have
4969 initialized it already.
4971 When doing a dynamic link, we create a .rela.got
4972 relocation entry to initialize the value. This
4973 is done in the finish_dynamic_symbol routine. */
4978 bfd_put_32 (output_bfd, relocation,
4979 sgot->contents + off);
4988 BFD_ASSERT (local_got_offsets != NULL
4989 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
4991 off = local_got_offsets[r_symndx];
4993 /* The offset must always be a multiple of 4. We use
4994 the least significant bit to record whether we have
4995 already processed this entry. */
5000 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5002 if (bfd_link_pic (info))
5005 Elf_Internal_Rela outrel;
5007 /* We need to generate a R_NDS32_RELATIVE reloc
5008 for the dynamic linker. */
5009 srelgot = htab->root.srelgot;
5010 BFD_ASSERT (srelgot != NULL);
5012 outrel.r_offset = (elf_gp (output_bfd)
5013 + sgot->output_offset + off);
5014 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5015 outrel.r_addend = relocation;
5016 loc = srelgot->contents;
5018 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5019 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5020 ++srelgot->reloc_count;
5022 local_got_offsets[r_symndx] |= 1;
5025 relocation = sgot->output_section->vma + sgot->output_offset + off
5026 - elf_gp (output_bfd);
5028 if (relocation & align)
5030 /* Incorrect alignment. */
5032 (_("%pB: warning: unaligned access to GOT entry."), input_bfd);
5034 r = bfd_reloc_dangerous;
5039 case R_NDS32_SDA16S3_RELA:
5040 case R_NDS32_SDA15S3_RELA:
5041 case R_NDS32_SDA15S3:
5045 case R_NDS32_SDA17S2_RELA:
5046 case R_NDS32_SDA15S2_RELA:
5047 case R_NDS32_SDA12S2_SP_RELA:
5048 case R_NDS32_SDA12S2_DP_RELA:
5049 case R_NDS32_SDA15S2:
5050 case R_NDS32_SDA_FP7U2_RELA:
5054 case R_NDS32_SDA18S1_RELA:
5055 case R_NDS32_SDA15S1_RELA:
5056 case R_NDS32_SDA15S1:
5060 case R_NDS32_SDA19S0_RELA:
5061 case R_NDS32_SDA15S0_RELA:
5062 case R_NDS32_SDA15S0:
5066 BFD_ASSERT (sec != NULL);
5068 /* If the symbol is in the abs section, the out_bfd will be null.
5069 This happens when the relocation has a symbol@GOTOFF. */
5070 r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE);
5071 if (r != bfd_reloc_ok)
5074 (_("%pB: warning: relocate SDA_BASE failed."), input_bfd);
5079 /* At this point `relocation' contains the object's
5081 if (r_type == R_NDS32_SDA_FP7U2_RELA)
5083 relocation -= fpbase_addr;
5087 /* Now it contains the offset from _SDA_BASE_. */
5089 /* Make sure alignment is correct. */
5091 if (relocation & align)
5093 /* Incorrect alignment. */
5095 /* xgettext:c-format */
5096 (_("%pB(%pA): warning: unaligned small data access of type %d."),
5097 input_bfd, input_section, r_type);
5104 case R_NDS32_17IFC_PCREL_RELA:
5105 case R_NDS32_10IFCU_PCREL_RELA:
5109 case R_NDS32_TLS_LE_HI20:
5110 case R_NDS32_TLS_LE_LO12:
5111 case R_NDS32_TLS_LE_20:
5112 case R_NDS32_TLS_LE_15S0:
5113 case R_NDS32_TLS_LE_15S1:
5114 case R_NDS32_TLS_LE_15S2:
5115 if (elf_hash_table (info)->tls_sec != NULL)
5116 relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET);
5118 case R_NDS32_TLS_IE_HI20:
5119 case R_NDS32_TLS_IE_LO12S2:
5121 /* Relocation is to the entry for this symbol in the global
5123 unsigned int tls_type;
5125 Elf_Internal_Rela outrel;
5130 BFD_ASSERT (sgot != NULL);
5135 off = h->got.offset;
5136 BFD_ASSERT (off != (bfd_vma) - 1);
5137 dyn = htab->root.dynamic_sections_created;
5138 tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type;
5139 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
5140 && (!bfd_link_pic (info)
5141 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5146 /* Never happen currently. */
5147 BFD_ASSERT (local_got_offsets != NULL
5148 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5150 off = local_got_offsets[r_symndx];
5152 tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx];
5154 relocation = sgot->output_section->vma + sgot->output_offset + off;
5156 if (r_type == R_NDS32_TLS_IE_LO12S2)
5159 /* The offset must always be a multiple of 4. We use
5160 the least significant bit to record whether we have
5161 already processed this entry. */
5166 bfd_boolean need_relocs = FALSE;
5167 srelgot = htab->root.srelgot;
5168 if ((bfd_link_pic (info) || indx != 0)
5170 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5171 || h->root.type != bfd_link_hash_undefweak))
5174 BFD_ASSERT (srelgot != NULL);
5176 if (tls_type & GOT_TLS_IE)
5180 if (h->dynindx == 0)
5181 outrel.r_addend = relocation - dtpoff_base (info);
5183 outrel.r_addend = 0;
5184 outrel.r_offset = (sgot->output_section->vma
5185 + sgot->output_offset
5188 ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF);
5190 loc = srelgot->contents;
5192 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5193 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5194 ++srelgot->reloc_count;
5197 bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET,
5198 sgot->contents + off);
5204 /* DON'T fall through. */
5207 /* OLD_NDS32_RELOC. */
5209 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5210 contents, offset, relocation, addend);
5214 switch ((int) r_type)
5216 case R_NDS32_20_RELA:
5217 case R_NDS32_5_RELA:
5218 case R_NDS32_9_PCREL_RELA:
5219 case R_NDS32_WORD_9_PCREL_RELA:
5220 case R_NDS32_10_UPCREL_RELA:
5221 case R_NDS32_15_PCREL_RELA:
5222 case R_NDS32_17_PCREL_RELA:
5223 case R_NDS32_25_PCREL_RELA:
5224 case R_NDS32_25_ABS_RELA:
5225 case R_NDS32_HI20_RELA:
5226 case R_NDS32_LO12S3_RELA:
5227 case R_NDS32_LO12S2_RELA:
5228 case R_NDS32_LO12S2_DP_RELA:
5229 case R_NDS32_LO12S2_SP_RELA:
5230 case R_NDS32_LO12S1_RELA:
5231 case R_NDS32_LO12S0_RELA:
5232 case R_NDS32_LO12S0_ORI_RELA:
5233 case R_NDS32_SDA16S3_RELA:
5234 case R_NDS32_SDA17S2_RELA:
5235 case R_NDS32_SDA18S1_RELA:
5236 case R_NDS32_SDA19S0_RELA:
5237 case R_NDS32_SDA15S3_RELA:
5238 case R_NDS32_SDA15S2_RELA:
5239 case R_NDS32_SDA12S2_DP_RELA:
5240 case R_NDS32_SDA12S2_SP_RELA:
5241 case R_NDS32_SDA15S1_RELA:
5242 case R_NDS32_SDA15S0_RELA:
5243 case R_NDS32_SDA_FP7U2_RELA:
5244 case R_NDS32_9_PLTREL:
5245 case R_NDS32_25_PLTREL:
5247 case R_NDS32_GOT_HI20:
5248 case R_NDS32_GOT_LO12:
5249 case R_NDS32_GOT_LO15:
5250 case R_NDS32_GOT_LO19:
5251 case R_NDS32_GOT15S2_RELA:
5252 case R_NDS32_GOT17S2_RELA:
5253 case R_NDS32_GOTPC20:
5254 case R_NDS32_GOTPC_HI20:
5255 case R_NDS32_GOTPC_LO12:
5256 case R_NDS32_GOTOFF:
5257 case R_NDS32_GOTOFF_HI20:
5258 case R_NDS32_GOTOFF_LO12:
5259 case R_NDS32_GOTOFF_LO15:
5260 case R_NDS32_GOTOFF_LO19:
5261 case R_NDS32_PLTREL_HI20:
5262 case R_NDS32_PLTREL_LO12:
5263 case R_NDS32_PLT_GOTREL_HI20:
5264 case R_NDS32_PLT_GOTREL_LO12:
5265 case R_NDS32_PLT_GOTREL_LO15:
5266 case R_NDS32_PLT_GOTREL_LO19:
5267 case R_NDS32_PLT_GOTREL_LO20:
5268 case R_NDS32_17IFC_PCREL_RELA:
5269 case R_NDS32_10IFCU_PCREL_RELA:
5270 case R_NDS32_TLS_LE_HI20:
5271 case R_NDS32_TLS_LE_LO12:
5272 case R_NDS32_TLS_IE_HI20:
5273 case R_NDS32_TLS_IE_LO12S2:
5274 case R_NDS32_TLS_LE_20:
5275 case R_NDS32_TLS_LE_15S0:
5276 case R_NDS32_TLS_LE_15S1:
5277 case R_NDS32_TLS_LE_15S2:
5278 /* Instruction related relocs must handle endian properly. */
5279 /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */
5280 r = nds32_elf_final_link_relocate (howto, input_bfd,
5281 input_section, contents,
5282 rel->r_offset, relocation,
5287 /* All other relocs can use default handler. */
5288 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5289 contents, rel->r_offset,
5290 relocation, rel->r_addend);
5296 if (r != bfd_reloc_ok)
5298 /* FIXME: This should be generic enough to go in a utility. */
5302 name = h->root.root.string;
5305 name = bfd_elf_string_from_elf_section
5306 (input_bfd, symtab_hdr->sh_link, sym->st_name);
5307 if (name == NULL || *name == '\0')
5308 name = bfd_section_name (input_bfd, sec);
5316 case bfd_reloc_overflow:
5317 (*info->callbacks->reloc_overflow)
5318 (info, (h ? &h->root : NULL), name, howto->name,
5319 (bfd_vma) 0, input_bfd, input_section, offset);
5322 case bfd_reloc_undefined:
5323 (*info->callbacks->undefined_symbol)
5324 (info, name, input_bfd, input_section, offset, TRUE);
5327 case bfd_reloc_outofrange:
5328 errmsg = _("internal error: out of range error");
5331 case bfd_reloc_notsupported:
5332 errmsg = _("internal error: unsupported relocation error");
5335 case bfd_reloc_dangerous:
5336 errmsg = _("internal error: dangerous error");
5340 errmsg = _("internal error: unknown error");
5344 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
5345 input_section, offset);
5354 /* Finish up dynamic symbol handling. We set the contents of various
5355 dynamic sections here. */
5358 nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5359 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
5361 struct elf_nds32_link_hash_table *htab;
5364 htab = nds32_elf_hash_table (info);
5366 if (h->plt.offset != (bfd_vma) - 1)
5374 bfd_vma local_plt_offset;
5375 Elf_Internal_Rela rela;
5377 /* This symbol has an entry in the procedure linkage table. Set
5380 BFD_ASSERT (h->dynindx != -1);
5382 splt = htab->root.splt;
5383 sgot = htab->root.sgotplt;
5384 srela = htab->root.srelplt;
5385 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
5387 /* Get the index in the procedure linkage table which
5388 corresponds to this symbol. This is the index of this symbol
5389 in all the symbols for which we are making plt entries. The
5390 first entry in the procedure linkage table is reserved. */
5391 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
5393 /* Get the offset into the .got table of the entry that
5394 corresponds to this function. Each .got entry is 4 bytes.
5395 The first three are reserved. */
5396 got_offset = (plt_index + 3) * 4;
5398 /* Fill in the entry in the procedure linkage table. */
5399 if (!bfd_link_pic (info))
5403 insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma
5404 + sgot->output_offset + got_offset) >> 12)
5406 bfd_putb32 (insn, splt->contents + h->plt.offset);
5408 insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma
5409 + sgot->output_offset + got_offset) & 0x0fff)
5411 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5413 insn = PLT_ENTRY_WORD2;
5414 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5416 insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff);
5417 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5419 insn = PLT_ENTRY_WORD4
5420 + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff);
5421 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5422 local_plt_offset = 12;
5426 /* sda_base must be set at this time. */
5430 /* FIXME, sda_base is 65536, it will damage opcode. */
5431 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5432 offset = sgot->output_section->vma + sgot->output_offset + got_offset
5433 - elf_gp (output_bfd);
5434 insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff);
5435 bfd_putb32 (insn, splt->contents + h->plt.offset);
5437 insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff);
5438 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
5440 insn = PLT_PIC_ENTRY_WORD2;
5441 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
5443 insn = PLT_PIC_ENTRY_WORD3;
5444 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
5446 insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff);
5447 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
5449 insn = PLT_PIC_ENTRY_WORD5
5450 + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff);
5451 bfd_putb32 (insn, splt->contents + h->plt.offset + 20);
5453 local_plt_offset = 16;
5456 /* Fill in the entry in the global offset table,
5457 so it will fall through to the next instruction for the first time. */
5458 bfd_put_32 (output_bfd,
5459 (splt->output_section->vma + splt->output_offset
5460 + h->plt.offset + local_plt_offset),
5461 sgot->contents + got_offset);
5463 /* Fill in the entry in the .rela.plt section. */
5464 rela.r_offset = (sgot->output_section->vma
5465 + sgot->output_offset + got_offset);
5466 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT);
5468 loc = srela->contents;
5469 loc += plt_index * sizeof (Elf32_External_Rela);
5470 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5472 if (!h->def_regular)
5474 /* Mark the symbol as undefined, rather than as defined in
5475 the .plt section. Leave the value alone. */
5476 sym->st_shndx = SHN_UNDEF;
5477 if (!h->ref_regular_nonweak)
5482 if (h->got.offset != (bfd_vma) - 1)
5486 Elf_Internal_Rela rela;
5488 /* This symbol has an entry in the global offset table.
5491 sgot = htab->root.sgot;
5492 srela = htab->root.srelgot;
5493 BFD_ASSERT (sgot != NULL && srela != NULL);
5495 rela.r_offset = (sgot->output_section->vma
5496 + sgot->output_offset + (h->got.offset & ~1));
5498 /* If this is a -Bsymbolic link, and the symbol is defined
5499 locally, we just want to emit a RELATIVE reloc. Likewise if
5500 the symbol was forced to be local because of a version file.
5501 The entry in the global offset table will already have been
5502 initialized in the relocate_section function. */
5503 if (bfd_link_pic (info)
5505 || h->dynindx == -1 || h->forced_local) && h->def_regular)
5507 rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5508 rela.r_addend = (h->root.u.def.value
5509 + h->root.u.def.section->output_section->vma
5510 + h->root.u.def.section->output_offset);
5514 BFD_ASSERT ((h->got.offset & 1) == 0);
5515 bfd_put_32 (output_bfd, (bfd_vma) 0,
5516 sgot->contents + h->got.offset);
5517 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT);
5521 loc = srela->contents;
5522 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
5523 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5524 ++srela->reloc_count;
5530 Elf_Internal_Rela rela;
5532 /* This symbols needs a copy reloc. Set it up. */
5534 BFD_ASSERT (h->dynindx != -1
5535 && (h->root.type == bfd_link_hash_defined
5536 || h->root.type == bfd_link_hash_defweak));
5538 s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss");
5539 BFD_ASSERT (s != NULL);
5541 rela.r_offset = (h->root.u.def.value
5542 + h->root.u.def.section->output_section->vma
5543 + h->root.u.def.section->output_offset);
5544 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY);
5547 loc += s->reloc_count * sizeof (Elf32_External_Rela);
5548 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5552 /* Mark some specially defined symbols as absolute. */
5553 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5554 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5555 sym->st_shndx = SHN_ABS;
5561 /* Finish up the dynamic sections. */
5564 nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5566 struct elf_nds32_link_hash_table *htab;
5571 htab = nds32_elf_hash_table (info);
5572 dynobj = htab->root.dynobj;
5574 sgot = htab->root.sgotplt;
5575 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5577 if (htab->root.dynamic_sections_created)
5580 Elf32_External_Dyn *dyncon, *dynconend;
5582 BFD_ASSERT (sgot != NULL && sdyn != NULL);
5584 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5585 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5587 for (; dyncon < dynconend; dyncon++)
5589 Elf_Internal_Dyn dyn;
5592 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5600 s = htab->root.sgotplt;
5603 s = htab->root.srelplt;
5605 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
5606 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5610 s = htab->root.srelplt;
5611 dyn.d_un.d_val = s->size;
5612 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5617 /* Fill in the first entry in the procedure linkage table. */
5618 splt = htab->root.splt;
5619 if (splt && splt->size > 0)
5621 if (bfd_link_pic (info))
5626 /* FIXME, sda_base is 65536, it will damage opcode. */
5627 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5628 offset = sgot->output_section->vma + sgot->output_offset + 4
5629 - elf_gp (output_bfd);
5630 insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff);
5631 bfd_putb32 (insn, splt->contents);
5633 /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */
5634 /* here has a typo? */
5635 insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff);
5636 bfd_putb32 (insn, splt->contents + 4);
5638 insn = PLT0_PIC_ENTRY_WORD2;
5639 bfd_putb32 (insn, splt->contents + 8);
5641 insn = PLT0_PIC_ENTRY_WORD3;
5642 bfd_putb32 (insn, splt->contents + 12);
5644 insn = PLT0_PIC_ENTRY_WORD4;
5645 bfd_putb32 (insn, splt->contents + 16);
5647 insn = PLT0_PIC_ENTRY_WORD5;
5648 bfd_putb32 (insn, splt->contents + 20);
5655 /* addr = .got + 4 */
5656 addr = sgot->output_section->vma + sgot->output_offset + 4;
5657 insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff);
5658 bfd_putb32 (insn, splt->contents);
5660 insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff);
5661 bfd_putb32 (insn, splt->contents + 4);
5663 insn = PLT0_ENTRY_WORD2;
5664 bfd_putb32 (insn, splt->contents + 8);
5666 insn = PLT0_ENTRY_WORD3;
5667 bfd_putb32 (insn, splt->contents + 12);
5669 insn = PLT0_ENTRY_WORD4;
5670 bfd_putb32 (insn, splt->contents + 16);
5673 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
5678 /* Fill in the first three entries in the global offset table. */
5679 if (sgot && sgot->size > 0)
5682 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5684 bfd_put_32 (output_bfd,
5685 sdyn->output_section->vma + sdyn->output_offset,
5687 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5688 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5690 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5697 /* Set the right machine number. */
5700 nds32_elf_object_p (bfd *abfd)
5702 static unsigned int cur_arch = 0;
5704 if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH))
5706 /* E_N1_ARCH is a wild card, so it is set only when no others exist. */
5707 cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH);
5714 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1);
5717 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h);
5719 case E_NDS_ARCH_STAR_V2_0:
5720 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2);
5722 case E_NDS_ARCH_STAR_V3_0:
5723 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3);
5725 case E_NDS_ARCH_STAR_V3_M:
5726 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m);
5733 /* Store the machine number in the flags field. */
5736 nds32_elf_final_write_processing (bfd *abfd,
5737 bfd_boolean linker ATTRIBUTE_UNUSED)
5740 static unsigned int cur_mach = 0;
5742 if (bfd_mach_n1 != bfd_get_mach (abfd))
5744 cur_mach = bfd_get_mach (abfd);
5750 /* Only happen when object is empty, since the case is abandon. */
5752 val |= E_NDS_ABI_AABI;
5753 val |= E_NDS32_ELF_VER_1_4;
5758 case bfd_mach_n1h_v2:
5759 val = E_NDS_ARCH_STAR_V2_0;
5761 case bfd_mach_n1h_v3:
5762 val = E_NDS_ARCH_STAR_V3_0;
5764 case bfd_mach_n1h_v3m:
5765 val = E_NDS_ARCH_STAR_V3_M;
5772 elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH;
5773 elf_elfheader (abfd)->e_flags |= val;
5776 /* Function to keep NDS32 specific file flags. */
5779 nds32_elf_set_private_flags (bfd *abfd, flagword flags)
5781 BFD_ASSERT (!elf_flags_init (abfd)
5782 || elf_elfheader (abfd)->e_flags == flags);
5784 elf_elfheader (abfd)->e_flags = flags;
5785 elf_flags_init (abfd) = TRUE;
5790 convert_e_flags (unsigned int e_flags, unsigned int arch)
5792 if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9)
5794 /* From 0.9 to 1.0. */
5795 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0;
5797 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5798 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5799 if (arch == E_NDS_ARCH_STAR_V1_0)
5806 /* From 1.0 to 2.0. */
5807 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0;
5809 /* Clear E_NDS32_HAS_MFUSR_PC_INST. */
5810 e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST;
5812 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5813 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
5818 nds32_check_vec_size (bfd *ibfd)
5820 static unsigned int nds32_vec_size = 0;
5822 asection *sec_t = NULL;
5823 bfd_byte *contents = NULL;
5825 sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags");
5827 if (sec_t && sec_t->size >= 4)
5829 /* Get vec_size in file. */
5830 unsigned int flag_t;
5832 nds32_get_section_contents (ibfd, sec_t, &contents, TRUE);
5833 flag_t = bfd_get_32 (ibfd, contents);
5835 /* The value could only be 4 or 16. */
5837 if (!nds32_vec_size)
5838 /* Set if not set yet. */
5839 nds32_vec_size = (flag_t & 0x3);
5840 else if (nds32_vec_size != (flag_t & 0x3))
5843 /* xgettext:c-format */
5844 (_("%pB: ISR vector size mismatch"
5845 " with previous modules, previous %u-byte, current %u-byte"),
5847 nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff,
5848 (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff);
5852 /* Only keep the first vec_size section. */
5853 sec_t->flags |= SEC_EXCLUDE;
5859 /* Merge backend specific data from an object file to the output
5860 object file when linking. */
5863 nds32_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
5865 bfd *obfd = info->output_bfd;
5868 flagword out_16regs;
5870 flagword out_no_mac;
5872 flagword out_version;
5873 flagword in_version;
5874 flagword out_fpu_config;
5875 flagword in_fpu_config;
5877 /* TODO: Revise to use object-attributes instead. */
5878 if (!nds32_check_vec_size (ibfd))
5881 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
5882 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
5885 if (bfd_little_endian (ibfd) != bfd_little_endian (obfd))
5888 (_("%pB: warning: Endian mismatch with previous modules."), ibfd);
5890 bfd_set_error (bfd_error_bad_value);
5894 in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION;
5895 if (in_version == E_NDS32_ELF_VER_1_2)
5898 (_("%pB: warning: Older version of object file encountered, "
5899 "Please recompile with current tool chain."), ibfd);
5902 /* We may need to merge V1 and V2 arch object files to V2. */
5903 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
5904 != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
5906 /* Need to convert version. */
5907 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
5908 == E_NDS_ARCH_STAR_RESERVED)
5910 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5912 else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9
5913 || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
5914 > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
5916 elf_elfheader (obfd)->e_flags =
5917 convert_e_flags (elf_elfheader (obfd)->e_flags,
5918 (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH));
5922 elf_elfheader (ibfd)->e_flags =
5923 convert_e_flags (elf_elfheader (ibfd)->e_flags,
5924 (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH));
5928 /* Extract some flags. */
5929 in_flags = elf_elfheader (ibfd)->e_flags
5930 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
5931 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
5933 /* The following flags need special treatment. */
5934 in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
5935 in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
5936 in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF;
5938 /* Extract some flags. */
5939 out_flags = elf_elfheader (obfd)->e_flags
5940 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
5941 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
5943 /* The following flags need special treatment. */
5944 out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
5945 out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
5946 out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF;
5947 out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION;
5948 if (!elf_flags_init (obfd))
5950 /* If the input is the default architecture then do not
5951 bother setting the flags for the output architecture,
5952 instead allow future merges to do this. If no future
5953 merges ever set these flags then they will retain their
5954 unitialised values, which surprise surprise, correspond
5955 to the default values. */
5956 if (bfd_get_arch_info (ibfd)->the_default)
5959 elf_flags_init (obfd) = TRUE;
5960 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5962 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
5963 && bfd_get_arch_info (obfd)->the_default)
5965 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
5966 bfd_get_mach (ibfd));
5972 /* Check flag compatibility. */
5973 if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI))
5976 (_("%pB: error: ABI mismatch with previous modules."), ibfd);
5978 bfd_set_error (bfd_error_bad_value);
5982 if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH))
5984 if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH))
5987 (_("%pB: error: Instruction set mismatch with previous modules."), ibfd);
5989 bfd_set_error (bfd_error_bad_value);
5994 /* When linking with V1.2 and V1.3 objects together the output is V1.2.
5995 and perf ext1 and DIV are mergerd to perf ext1. */
5996 if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2)
5998 elf_elfheader (obfd)->e_flags =
5999 (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6000 | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6001 | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6002 ? E_NDS32_HAS_EXT_INST : 0)
6003 | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6004 ? E_NDS32_HAS_EXT_INST : 0)
6005 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6006 | ((in_version > out_version) ? out_version : in_version);
6010 if (in_version != out_version)
6012 /* xgettext:c-format */
6013 (_("%pB: warning: Incompatible elf-versions %s and %s."),
6014 ibfd, nds32_elfver_strtab[out_version],
6015 nds32_elfver_strtab[in_version]);
6017 elf_elfheader (obfd)->e_flags = in_flags | out_flags
6018 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6019 | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config)
6020 | (in_version > out_version ? out_version : in_version);
6026 /* Display the flags field. */
6029 nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6031 FILE *file = (FILE *) ptr;
6033 BFD_ASSERT (abfd != NULL && ptr != NULL);
6035 _bfd_elf_print_private_bfd_data (abfd, ptr);
6037 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
6039 switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)
6043 fprintf (file, _(": n1 instructions"));
6046 fprintf (file, _(": n1h instructions"));
6056 nds32_elf_action_discarded (asection *sec)
6060 (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0)
6063 return _bfd_elf_default_action_discarded (sec);
6067 nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
6068 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
6069 Elf_Internal_Sym *sym)
6072 switch (ELF32_R_TYPE (rel->r_info))
6074 case R_NDS32_GNU_VTINHERIT:
6075 case R_NDS32_GNU_VTENTRY:
6076 case R_NDS32_RELA_GNU_VTINHERIT:
6077 case R_NDS32_RELA_GNU_VTENTRY:
6081 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6084 /* Look through the relocs for a section during the first phase.
6085 Since we don't do .gots or .plts, we just need to consider the
6086 virtual table relocs for gc. */
6089 nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
6090 asection *sec, const Elf_Internal_Rela *relocs)
6092 Elf_Internal_Shdr *symtab_hdr;
6093 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
6094 const Elf_Internal_Rela *rel;
6095 const Elf_Internal_Rela *rel_end;
6096 struct elf_nds32_link_hash_table *htab;
6098 asection *sreloc = NULL;
6100 if (bfd_link_relocatable (info))
6103 /* Don't do anything special with non-loaded, non-alloced sections.
6104 In particular, any relocs in such sections should not affect GOT
6105 and PLT reference counting (ie. we don't allow them to create GOT
6106 or PLT entries), there's no possibility or desire to optimize TLS
6107 relocs, and there's not much point in propagating relocs to shared
6108 libs that the dynamic linker won't relocate. */
6109 if ((sec->flags & SEC_ALLOC) == 0)
6112 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6113 sym_hashes = elf_sym_hashes (abfd);
6115 sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
6116 if (!elf_bad_symtab (abfd))
6117 sym_hashes_end -= symtab_hdr->sh_info;
6119 htab = nds32_elf_hash_table (info);
6120 dynobj = htab->root.dynobj;
6122 rel_end = relocs + sec->reloc_count;
6123 for (rel = relocs; rel < rel_end; rel++)
6125 enum elf_nds32_reloc_type r_type;
6126 struct elf_link_hash_entry *h;
6127 unsigned long r_symndx;
6128 int tls_type, old_tls_type;
6130 r_symndx = ELF32_R_SYM (rel->r_info);
6131 r_type = ELF32_R_TYPE (rel->r_info);
6132 if (r_symndx < symtab_hdr->sh_info)
6136 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6137 while (h->root.type == bfd_link_hash_indirect
6138 || h->root.type == bfd_link_hash_warning)
6139 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6142 /* Some relocs require a global offset table. We create
6143 got section here, since these relocation need got section
6144 and it is not created yet. */
6145 if (htab->root.sgot == NULL)
6149 case R_NDS32_GOT_HI20:
6150 case R_NDS32_GOT_LO12:
6151 case R_NDS32_GOT_LO15:
6152 case R_NDS32_GOT_LO19:
6153 case R_NDS32_GOT17S2_RELA:
6154 case R_NDS32_GOT15S2_RELA:
6155 case R_NDS32_GOTOFF:
6156 case R_NDS32_GOTOFF_HI20:
6157 case R_NDS32_GOTOFF_LO12:
6158 case R_NDS32_GOTOFF_LO15:
6159 case R_NDS32_GOTOFF_LO19:
6160 case R_NDS32_GOTPC20:
6161 case R_NDS32_GOTPC_HI20:
6162 case R_NDS32_GOTPC_LO12:
6164 case R_NDS32_TLS_IE_HI20:
6165 case R_NDS32_TLS_IE_LO12S2:
6167 htab->root.dynobj = dynobj = abfd;
6168 if (!_bfd_elf_create_got_section (dynobj, info))
6177 switch ((int) r_type)
6179 case R_NDS32_GOT_HI20:
6180 case R_NDS32_GOT_LO12:
6181 case R_NDS32_GOT_LO15:
6182 case R_NDS32_GOT_LO19:
6184 case R_NDS32_TLS_IE_HI20:
6185 case R_NDS32_TLS_IE_LO12S2:
6188 case R_NDS32_TLS_IE_HI20:
6189 case R_NDS32_TLS_IE_LO12S2:
6190 tls_type = GOT_TLS_IE;
6193 tls_type = GOT_NORMAL;
6198 old_tls_type = elf32_nds32_hash_entry (h)->tls_type;
6199 h->got.refcount += 1;
6203 bfd_signed_vma *local_got_refcounts;
6205 /* This is a global offset table entry for a local
6207 local_got_refcounts = elf_local_got_refcounts (abfd);
6208 if (local_got_refcounts == NULL)
6212 size = symtab_hdr->sh_info;
6213 size *= sizeof (bfd_signed_vma);
6214 local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size);
6215 if (local_got_refcounts == NULL)
6217 elf_local_got_refcounts (abfd) = local_got_refcounts;
6219 local_got_refcounts[r_symndx] += 1;
6220 old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx];
6223 /* We will already have issued an error message if there
6224 is a TLS/non-TLS mismatch, based on the symbol
6225 type. So just combine any TLS types needed. */
6226 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
6227 && tls_type != GOT_NORMAL)
6228 tls_type |= old_tls_type;
6230 if (old_tls_type != tls_type)
6233 elf32_nds32_hash_entry (h)->tls_type = tls_type;
6235 elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type;
6238 case R_NDS32_9_PLTREL:
6239 case R_NDS32_25_PLTREL:
6240 case R_NDS32_PLTREL_HI20:
6241 case R_NDS32_PLTREL_LO12:
6242 case R_NDS32_PLT_GOTREL_HI20:
6243 case R_NDS32_PLT_GOTREL_LO12:
6244 case R_NDS32_PLT_GOTREL_LO15:
6245 case R_NDS32_PLT_GOTREL_LO19:
6246 case R_NDS32_PLT_GOTREL_LO20:
6248 /* This symbol requires a procedure linkage table entry. We
6249 actually build the entry in adjust_dynamic_symbol,
6250 because this might be a case of linking PIC code without
6251 linking in any dynamic objects, in which case we don't
6252 need to generate a procedure linkage table after all. */
6254 /* If this is a local symbol, we resolve it directly without
6255 creating a procedure linkage table entry. */
6259 if (h->forced_local)
6262 elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL;
6264 h->plt.refcount += 1;
6267 case R_NDS32_16_RELA:
6268 case R_NDS32_20_RELA:
6269 case R_NDS32_5_RELA:
6270 case R_NDS32_32_RELA:
6271 case R_NDS32_HI20_RELA:
6272 case R_NDS32_LO12S3_RELA:
6273 case R_NDS32_LO12S2_RELA:
6274 case R_NDS32_LO12S2_DP_RELA:
6275 case R_NDS32_LO12S2_SP_RELA:
6276 case R_NDS32_LO12S1_RELA:
6277 case R_NDS32_LO12S0_RELA:
6278 case R_NDS32_LO12S0_ORI_RELA:
6279 case R_NDS32_SDA16S3_RELA:
6280 case R_NDS32_SDA17S2_RELA:
6281 case R_NDS32_SDA18S1_RELA:
6282 case R_NDS32_SDA19S0_RELA:
6283 case R_NDS32_SDA15S3_RELA:
6284 case R_NDS32_SDA15S2_RELA:
6285 case R_NDS32_SDA12S2_DP_RELA:
6286 case R_NDS32_SDA12S2_SP_RELA:
6287 case R_NDS32_SDA15S1_RELA:
6288 case R_NDS32_SDA15S0_RELA:
6289 case R_NDS32_SDA_FP7U2_RELA:
6290 case R_NDS32_15_PCREL_RELA:
6291 case R_NDS32_17_PCREL_RELA:
6292 case R_NDS32_25_PCREL_RELA:
6294 if (h != NULL && !bfd_link_pic (info))
6297 h->plt.refcount += 1;
6300 /* If we are creating a shared library, and this is a reloc against
6301 a global symbol, or a non PC relative reloc against a local
6302 symbol, then we need to copy the reloc into the shared library.
6303 However, if we are linking with -Bsymbolic, we do not need to
6304 copy a reloc against a global symbol which is defined in an
6305 object we are including in the link (i.e., DEF_REGULAR is set).
6306 At this point we have not seen all the input files, so it is
6307 possible that DEF_REGULAR is not set now but will be set later
6308 (it is never cleared). We account for that possibility below by
6309 storing information in the dyn_relocs field of the hash table
6310 entry. A similar situation occurs when creating shared libraries
6311 and symbol visibility changes render the symbol local.
6313 If on the other hand, we are creating an executable, we may need
6314 to keep relocations for symbols satisfied by a dynamic library
6315 if we manage to avoid copy relocs for the symbol. */
6316 if ((bfd_link_pic (info)
6317 && (sec->flags & SEC_ALLOC) != 0
6318 && ((r_type != R_NDS32_25_PCREL_RELA
6319 && r_type != R_NDS32_15_PCREL_RELA
6320 && r_type != R_NDS32_17_PCREL_RELA
6321 && !(r_type == R_NDS32_32_RELA
6322 && strcmp (sec->name, ".eh_frame") == 0))
6325 || h->root.type == bfd_link_hash_defweak
6326 || !h->def_regular))))
6327 || (!bfd_link_pic (info)
6328 && (sec->flags & SEC_ALLOC) != 0
6330 && (h->root.type == bfd_link_hash_defweak
6331 || !h->def_regular)))
6333 struct elf_dyn_relocs *p;
6334 struct elf_dyn_relocs **head;
6337 htab->root.dynobj = dynobj = abfd;
6339 /* When creating a shared object, we must copy these
6340 relocs into the output file. We create a reloc
6341 section in dynobj and make room for the reloc. */
6346 name = bfd_elf_string_from_elf_section
6347 (abfd, elf_elfheader (abfd)->e_shstrndx,
6348 elf_section_data (sec)->rela.hdr->sh_name);
6352 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6353 && strcmp (bfd_get_section_name (abfd, sec),
6356 sreloc = bfd_get_section_by_name (dynobj, name);
6361 sreloc = bfd_make_section (dynobj, name);
6362 flags = (SEC_HAS_CONTENTS | SEC_READONLY
6363 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
6364 if ((sec->flags & SEC_ALLOC) != 0)
6365 flags |= SEC_ALLOC | SEC_LOAD;
6367 || !bfd_set_section_flags (dynobj, sreloc, flags)
6368 || !bfd_set_section_alignment (dynobj, sreloc, 2))
6371 elf_section_type (sreloc) = SHT_RELA;
6373 elf_section_data (sec)->sreloc = sreloc;
6376 /* If this is a global symbol, we count the number of
6377 relocations we need for this symbol. */
6379 head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs;
6385 Elf_Internal_Sym *isym;
6386 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
6390 /* Track dynamic relocs needed for local syms too. */
6391 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6395 vpp = &elf_section_data (s)->local_dynrel;
6396 head = (struct elf_dyn_relocs **) vpp;
6400 if (p == NULL || p->sec != sec)
6402 bfd_size_type amt = sizeof (*p);
6403 p = (struct elf_dyn_relocs *) bfd_alloc (dynobj, amt);
6414 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA
6415 || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
6416 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA)
6421 /* This relocation describes the C++ object vtable hierarchy.
6422 Reconstruct it for later use during GC. */
6423 case R_NDS32_RELA_GNU_VTINHERIT:
6424 case R_NDS32_GNU_VTINHERIT:
6425 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
6429 /* This relocation describes which C++ vtable entries are actually
6430 used. Record for later use during GC. */
6431 case R_NDS32_GNU_VTENTRY:
6432 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
6435 case R_NDS32_RELA_GNU_VTENTRY:
6436 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6445 /* Write VAL in uleb128 format to P, returning a pointer to the
6447 This code is copied from elf-attr.c. */
6450 write_uleb128 (bfd_byte *p, unsigned int val)
6465 static bfd_signed_vma
6466 calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
6467 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr,
6468 int *pic_ext_target)
6470 bfd_signed_vma foff;
6471 bfd_vma symval, addend;
6474 /* Get the value of the symbol referred to by the reloc. */
6475 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6477 Elf_Internal_Sym *isym;
6479 /* A local symbol. */
6480 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6482 if (isym->st_shndx == SHN_UNDEF)
6483 sym_sec = bfd_und_section_ptr;
6484 else if (isym->st_shndx == SHN_ABS)
6485 sym_sec = bfd_abs_section_ptr;
6486 else if (isym->st_shndx == SHN_COMMON)
6487 sym_sec = bfd_com_section_ptr;
6489 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6490 symval = isym->st_value + sym_sec->output_section->vma
6491 + sym_sec->output_offset;
6496 struct elf_link_hash_entry *h;
6499 /* An external symbol. */
6500 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6501 h = elf_sym_hashes (abfd)[indx];
6502 BFD_ASSERT (h != NULL);
6504 if (h->root.type != bfd_link_hash_defined
6505 && h->root.type != bfd_link_hash_defweak)
6506 /* This appears to be a reference to an undefined
6507 symbol. Just ignore it--it will be caught by the
6508 regular reloc processing. */
6510 owner = h->root.u.def.section->owner;
6511 if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC))
6512 *pic_ext_target = 1;
6514 if (h->root.u.def.section->flags & SEC_MERGE)
6516 sym_sec = h->root.u.def.section;
6517 symval = _bfd_merged_section_offset (abfd, &sym_sec,
6518 elf_section_data (sym_sec)->sec_info,
6519 h->root.u.def.value);
6520 symval = symval + sym_sec->output_section->vma
6521 + sym_sec->output_offset;
6524 symval = (h->root.u.def.value
6525 + h->root.u.def.section->output_section->vma
6526 + h->root.u.def.section->output_offset);
6529 addend = irel->r_addend;
6531 foff = (symval + addend
6532 - (irel->r_offset + sec->output_section->vma + sec->output_offset));
6537 calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info,
6538 Elf_Internal_Sym *isymbuf,
6539 Elf_Internal_Rela *irel,
6540 Elf_Internal_Shdr *symtab_hdr)
6544 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6546 Elf_Internal_Sym *isym;
6548 /* A local symbol. */
6549 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6551 if (isym->st_shndx == SHN_UNDEF)
6552 sym_sec = bfd_und_section_ptr;
6553 else if (isym->st_shndx == SHN_ABS)
6554 sym_sec = bfd_abs_section_ptr;
6555 else if (isym->st_shndx == SHN_COMMON)
6556 sym_sec = bfd_com_section_ptr;
6558 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6559 symval = isym->st_value + sym_sec->output_section->vma
6560 + sym_sec->output_offset;
6565 struct elf_link_hash_entry *h;
6566 struct elf_nds32_link_hash_table *htab;
6569 /* An external symbol. */
6570 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6571 h = elf_sym_hashes (abfd)[indx];
6572 BFD_ASSERT (h != NULL);
6573 htab = nds32_elf_hash_table (link_info);
6574 splt = htab->root.splt;
6576 while (h->root.type == bfd_link_hash_indirect
6577 || h->root.type == bfd_link_hash_warning)
6578 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6580 if (h->plt.offset == (bfd_vma) - 1)
6582 if (h->root.type != bfd_link_hash_defined
6583 && h->root.type != bfd_link_hash_defweak)
6584 /* This appears to be a reference to an undefined
6585 * symbol. Just ignore it--it will be caught by the
6586 * regular reloc processing. */
6588 symval = (h->root.u.def.value
6589 + h->root.u.def.section->output_section->vma
6590 + h->root.u.def.section->output_offset);
6593 symval = splt->output_section->vma + h->plt.offset;
6599 static bfd_signed_vma
6600 calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info,
6601 Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel,
6602 Elf_Internal_Shdr *symtab_hdr)
6605 if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
6609 return foff - (irel->r_offset
6610 + sec->output_section->vma + sec->output_offset);
6613 /* Convert a 32-bit instruction to 16-bit one.
6614 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
6615 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
6616 type of INSN16. Return 1 if successful. */
6619 nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6622 uint16_t insn16 = 0;
6624 unsigned long mach = bfd_get_mach (abfd);
6626 if (N32_SH5 (insn) != 0)
6629 switch (N32_SUB5 (insn))
6631 case N32_ALU1_ADD_SLLI:
6632 case N32_ALU1_ADD_SRLI:
6633 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6635 insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn),
6637 insn_type = NDS32_INSN_ADD333;
6639 else if (N32_IS_RT4 (insn))
6641 if (N32_RT5 (insn) == N32_RA5 (insn))
6642 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn));
6643 else if (N32_RT5 (insn) == N32_RB5 (insn))
6644 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn));
6645 insn_type = NDS32_INSN_ADD45;
6649 case N32_ALU1_SUB_SLLI:
6650 case N32_ALU1_SUB_SRLI:
6651 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
6653 insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn),
6655 insn_type = NDS32_INSN_SUB333;
6657 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6659 insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn));
6660 insn_type = NDS32_INSN_SUB45;
6664 case N32_ALU1_AND_SLLI:
6665 case N32_ALU1_AND_SRLI:
6666 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
6667 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6668 && N32_IS_RB3 (insn))
6670 if (N32_RT5 (insn) == N32_RA5 (insn))
6671 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn));
6672 else if (N32_RT5 (insn) == N32_RB5 (insn))
6673 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn));
6675 insn_type = NDS32_INSN_AND33;
6679 case N32_ALU1_XOR_SLLI:
6680 case N32_ALU1_XOR_SRLI:
6681 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
6682 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6683 && N32_IS_RB3 (insn))
6685 if (N32_RT5 (insn) == N32_RA5 (insn))
6686 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn));
6687 else if (N32_RT5 (insn) == N32_RB5 (insn))
6688 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn));
6690 insn_type = NDS32_INSN_XOR33;
6694 case N32_ALU1_OR_SLLI:
6695 case N32_ALU1_OR_SRLI:
6696 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
6697 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6698 && N32_IS_RB3 (insn))
6700 if (N32_RT5 (insn) == N32_RA5 (insn))
6701 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn));
6702 else if (N32_RT5 (insn) == N32_RB5 (insn))
6703 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn));
6705 insn_type = NDS32_INSN_OR33;
6709 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
6710 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn)
6711 && N32_RA5 (insn) == N32_RB5 (insn))
6713 insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn));
6714 insn_type = NDS32_INSN_NOT33;
6718 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6720 insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn));
6721 insn_type = NDS32_INSN_SRAI45;
6726 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
6728 insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn));
6729 insn_type = NDS32_INSN_SRLI45;
6734 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8)
6736 insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn),
6738 insn_type = NDS32_INSN_SLLI333;
6743 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6745 insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn));
6746 insn_type = NDS32_INSN_ZEH33;
6751 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6753 insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn));
6754 insn_type = NDS32_INSN_SEB33;
6759 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6761 insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn));
6762 insn_type = NDS32_INSN_SEH33;
6767 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
6770 insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn));
6771 insn_type = NDS32_INSN_SLT45;
6776 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
6779 insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn));
6780 insn_type = NDS32_INSN_SLTS45;
6785 if ((insn16 & 0x8000) == 0)
6791 *pinsn_type = insn_type;
6796 nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6799 uint16_t insn16 = 0;
6801 unsigned long mach = bfd_get_mach (abfd);
6803 /* TODO: bset, bclr, btgl, btst. */
6804 if (__GF (insn, 6, 4) != 0)
6807 switch (N32_IMMU (insn, 6))
6810 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
6811 && N32_IS_RB3 (insn))
6813 if (N32_RT5 (insn) == N32_RA5 (insn))
6814 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn));
6815 else if (N32_RT5 (insn) == N32_RB5 (insn))
6816 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn));
6818 insn_type = NDS32_INSN_MUL33;
6822 if ((insn16 & 0x8000) == 0)
6828 *pinsn_type = insn_type;
6833 nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
6837 uint16_t insn16 = 0;
6839 unsigned long mach = bfd_get_mach (abfd);
6841 /* Decode 32-bit instruction. */
6842 if (insn & 0x80000000)
6844 /* Not 32-bit insn. */
6848 op6 = N32_OP6 (insn);
6850 /* Convert it to 16-bit instruction. */
6854 if (IS_WITHIN_S (N32_IMM20S (insn), 5))
6856 insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn));
6857 insn_type = NDS32_INSN_MOVI55;
6859 else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16
6860 && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn))
6862 insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn),
6863 N32_IMM20S (insn) - 16);
6864 insn_type = NDS32_INSN_MOVPI45;
6869 if (N32_IMM15S (insn) == 0)
6871 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
6872 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
6874 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
6876 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
6877 insn_type = NDS32_INSN_MOV55;
6880 else if (N32_IMM15S (insn) > 0)
6882 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8)
6884 insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn),
6886 insn_type = NDS32_INSN_ADDI333;
6888 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
6889 && N32_IMM15S (insn) < 32)
6891 insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn));
6892 insn_type = NDS32_INSN_ADDI45;
6894 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
6895 && N32_RT5 (insn) == N32_RA5 (insn)
6896 && N32_IMM15S (insn) < 512)
6898 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
6899 insn_type = NDS32_INSN_ADDI10_SP;
6901 else if (mach >= MACH_V3 && N32_IS_RT3 (insn)
6902 && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256
6903 && (N32_IMM15S (insn) % 4 == 0))
6905 insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn),
6906 N32_IMM15S (insn) >> 2);
6907 insn_type = NDS32_INSN_ADDRI36_SP;
6913 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8)
6915 insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn),
6916 0 - N32_IMM15S (insn));
6917 insn_type = NDS32_INSN_SUBI333;
6919 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
6920 && N32_IMM15S (insn) > -32)
6922 insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn),
6923 0 - N32_IMM15S (insn));
6924 insn_type = NDS32_INSN_SUBI45;
6926 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
6927 && N32_RT5 (insn) == N32_RA5 (insn)
6928 && N32_IMM15S (insn) >= -512)
6930 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
6931 insn_type = NDS32_INSN_ADDI10_SP;
6937 if (N32_IMM15S (insn) == 0)
6939 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
6940 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
6942 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
6944 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
6945 insn_type = NDS32_INSN_MOV55;
6951 if (mach >= MACH_V3 && N32_IS_RT3 (insn)
6952 && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0)
6954 insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn));
6955 insn_type = NDS32_INSN_NEG33;
6960 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
6962 if (N32_IMM15U (insn) == 1)
6964 insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn));
6965 insn_type = NDS32_INSN_XLSB33;
6967 else if (N32_IMM15U (insn) == 0x7ff)
6969 insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn));
6970 insn_type = NDS32_INSN_X11B33;
6972 else if (N32_IMM15U (insn) == 0xff)
6974 insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn));
6975 insn_type = NDS32_INSN_ZEB33;
6977 else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn)
6978 && N32_IMM15U (insn) < 256)
6980 int imm15u = N32_IMM15U (insn);
6982 if (__builtin_popcount (imm15u) == 1)
6985 int imm3u = __builtin_ctz (imm15u);
6987 insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u);
6988 insn_type = NDS32_INSN_BMSKI33;
6990 else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1)
6993 int imm3u = __builtin_ctz (imm15u + 1) - 1;
6995 insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u);
6996 insn_type = NDS32_INSN_FEXTI33;
7003 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7004 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7006 insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn));
7007 insn_type = NDS32_INSN_SLTI45;
7012 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7013 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7015 insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn));
7016 insn_type = NDS32_INSN_SLTSI45;
7021 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7023 insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn));
7024 insn_type = NDS32_INSN_LWI450;
7026 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7027 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7029 insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn),
7031 insn_type = NDS32_INSN_LWI333;
7033 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7034 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7036 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7037 insn_type = NDS32_INSN_LWI37;
7039 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7040 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7042 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn));
7043 insn_type = NDS32_INSN_LWI37_SP;
7045 else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8
7046 && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0)
7048 insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn),
7049 N32_IMM15S (insn) + 32);
7050 insn_type = NDS32_INSN_LWI45_FE;
7055 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7057 insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn));
7058 insn_type = NDS32_INSN_SWI450;
7060 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7061 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7063 insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn),
7065 insn_type = NDS32_INSN_SWI333;
7067 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7068 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7070 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7071 insn_type = NDS32_INSN_SWI37;
7073 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7074 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7076 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn));
7077 insn_type = NDS32_INSN_SWI37_SP;
7081 case N32_OP6_LWI_BI:
7082 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7083 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7085 insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7087 insn_type = NDS32_INSN_LWI333_BI;
7091 case N32_OP6_SWI_BI:
7092 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7093 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7095 insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7097 insn_type = NDS32_INSN_SWI333_BI;
7102 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7103 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7105 insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn),
7107 insn_type = NDS32_INSN_LHI333;
7112 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7113 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7115 insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn),
7117 insn_type = NDS32_INSN_SHI333;
7122 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7123 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7125 insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn),
7127 insn_type = NDS32_INSN_LBI333;
7132 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7133 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7135 insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn),
7137 insn_type = NDS32_INSN_SBI333;
7142 return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type);
7145 return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type);
7148 if (!IS_WITHIN_S (N32_IMM14S (insn), 8))
7151 if ((insn & N32_BIT (14)) == 0)
7154 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7155 && N32_RT5 (insn) != REG_R5)
7156 insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn));
7157 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7158 && N32_RA5 (insn) != REG_R5)
7159 insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn));
7160 insn_type = NDS32_INSN_BEQS38;
7166 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
7167 && N32_RT5 (insn) != REG_R5)
7168 insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn));
7169 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
7170 && N32_RA5 (insn) != REG_R5)
7171 insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn));
7172 insn_type = NDS32_INSN_BNES38;
7178 switch (N32_BR2_SUB (insn))
7181 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7183 insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn));
7184 insn_type = NDS32_INSN_BEQZ38;
7186 else if (N32_RT5 (insn) == REG_R15
7187 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7189 insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn));
7190 insn_type = NDS32_INSN_BEQZS8;
7195 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
7197 insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn));
7198 insn_type = NDS32_INSN_BNEZ38;
7200 else if (N32_RT5 (insn) == REG_R15
7201 && IS_WITHIN_S (N32_IMM16S (insn), 8))
7203 insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn));
7204 insn_type = NDS32_INSN_BNEZS8;
7208 case N32_BR2_IFCALL:
7209 if (IS_WITHIN_U (N32_IMM16S (insn), 9))
7211 insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn));
7212 insn_type = NDS32_INSN_IFCALL9;
7219 if ((insn & N32_BIT (24)) == 0)
7222 if (IS_WITHIN_S (N32_IMM24S (insn), 8))
7224 insn16 = N16_TYPE8 (J8, N32_IMM24S (insn));
7225 insn_type = NDS32_INSN_J8;
7231 if (__GF (insn, 8, 2) != 0)
7234 switch (N32_IMMU (insn, 5))
7237 if (N32_JREG_HINT (insn) == 0)
7240 insn16 = N16_TYPE5 (JR5, N32_RB5 (insn));
7241 insn_type = NDS32_INSN_JR5;
7243 else if (N32_JREG_HINT (insn) == 1)
7246 insn16 = N16_TYPE5 (RET5, N32_RB5 (insn));
7247 insn_type = NDS32_INSN_RET5;
7249 else if (N32_JREG_HINT (insn) == 3)
7251 /* ifret = mov55 $sp, $sp */
7252 insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP);
7253 insn_type = NDS32_INSN_IFRET;
7258 /* It's convertible when return rt5 is $lp and address
7259 translation is kept. */
7260 if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0)
7262 insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn));
7263 insn_type = NDS32_INSN_JRAL5;
7270 if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32)
7272 /* For v3, swid above 31 are used for ex9.it. */
7273 insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn));
7274 insn_type = NDS32_INSN_BREAK16;
7279 /* This instruction has no 16-bit variant. */
7284 /* Bit-15 of insn16 should be set for a valid instruction. */
7285 if ((insn16 & 0x8000) == 0)
7291 *pinsn_type = insn_type;
7296 special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16,
7297 Elf_Internal_Rela *reloc)
7299 uint16_t insn16 = 0;
7301 if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0
7302 || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16))
7305 if (!N32_IS_RT3 (insn))
7308 switch (N32_OP6 (insn))
7311 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7312 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7315 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
7316 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7319 if (!IS_WITHIN_U (N32_IMM17S (insn), 7))
7322 if (__GF (insn, 17, 3) == 6)
7323 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn));
7324 else if (__GF (insn, 17, 3) == 7)
7325 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn));
7329 if ((insn16 & 0x8000) == 0)
7336 /* Convert a 16-bit instruction to 32-bit one.
7337 INSN16 it the input and PINSN it the point to output.
7338 Return non-zero on successful. Otherwise 0 is returned. */
7341 nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn)
7343 uint32_t insn = 0xffffffff;
7344 unsigned long mach = bfd_get_mach (abfd);
7346 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
7348 switch (__GF (insn16, 9, 6))
7350 case 0x4: /* add45 */
7351 insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16),
7354 case 0x5: /* sub45 */
7355 insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16),
7358 case 0x6: /* addi45 */
7359 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7360 N16_IMM5U (insn16));
7362 case 0x7: /* subi45 */
7363 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
7364 -N16_IMM5U (insn16));
7366 case 0x8: /* srai45 */
7367 insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16),
7368 N16_IMM5U (insn16));
7370 case 0x9: /* srli45 */
7371 insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16),
7372 N16_IMM5U (insn16));
7374 case 0xa: /* slli333 */
7375 insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16),
7376 N16_IMM3U (insn16));
7378 case 0xc: /* add333 */
7379 insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16),
7382 case 0xd: /* sub333 */
7383 insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16),
7386 case 0xe: /* addi333 */
7387 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7388 N16_IMM3U (insn16));
7390 case 0xf: /* subi333 */
7391 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
7392 -N16_IMM3U (insn16));
7394 case 0x10: /* lwi333 */
7395 insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16),
7396 N16_IMM3U (insn16));
7398 case 0x12: /* lhi333 */
7399 insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16),
7400 N16_IMM3U (insn16));
7402 case 0x13: /* lbi333 */
7403 insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16),
7404 N16_IMM3U (insn16));
7406 case 0x11: /* lwi333.bi */
7407 insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7408 N16_IMM3U (insn16));
7410 case 0x14: /* swi333 */
7411 insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16),
7412 N16_IMM3U (insn16));
7414 case 0x16: /* shi333 */
7415 insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16),
7416 N16_IMM3U (insn16));
7418 case 0x17: /* sbi333 */
7419 insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16),
7420 N16_IMM3U (insn16));
7422 case 0x15: /* swi333.bi */
7423 insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
7424 N16_IMM3U (insn16));
7426 case 0x18: /* addri36.sp */
7427 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP,
7428 N16_IMM6U (insn16) << 2);
7430 case 0x19: /* lwi45.fe */
7431 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8,
7432 (N16_IMM5U (insn16) - 32));
7434 case 0x1a: /* lwi450 */
7435 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7437 case 0x1b: /* swi450 */
7438 insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
7441 /* These are r15 implied instructions. */
7442 case 0x30: /* slts45 */
7443 insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7445 case 0x31: /* slt45 */
7446 insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
7448 case 0x32: /* sltsi45 */
7449 insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7451 case 0x33: /* slti45 */
7452 insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
7454 case 0x34: /* beqzs8, bnezs8 */
7455 if (insn16 & N32_BIT (8))
7456 insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16));
7458 insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16));
7461 case 0x35: /* break16, ex9.it */
7462 /* Only consider range of v3 break16. */
7463 insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK);
7466 case 0x3c: /* ifcall9 */
7467 insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16));
7469 case 0x3d: /* movpi45 */
7470 insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16);
7473 case 0x3f: /* MISC33 */
7474 switch (insn16 & 0x7)
7477 insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7480 insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16),
7484 insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16),
7488 insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16),
7492 insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16),
7496 insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16),
7503 switch (insn16 & 0x7)
7506 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff);
7509 insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7512 insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7515 insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
7517 case 4: /* xlsb33 */
7518 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1);
7520 case 5: /* x11b33 */
7521 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff);
7523 case 6: /* bmski33 */
7524 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7525 1 << __GF (insn16, 3, 3));
7527 case 7: /* fexti33 */
7528 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
7529 (1 << (__GF (insn16, 3, 3) + 1)) - 1);
7535 switch (__GF (insn16, 10, 5))
7537 case 0x0: /* mov55 or ifret16 */
7538 if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP
7539 && N16_RT5 (insn16) == N16_RA5 (insn16))
7540 insn = N32_JREG (JR, 0, 0, 0, 3);
7542 insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0);
7544 case 0x1: /* movi55 */
7545 insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16));
7547 case 0x1b: /* addi10s (V2) */
7548 insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16));
7552 switch (__GF (insn16, 11, 4))
7554 case 0x7: /* lwi37.fp/swi37.fp */
7555 if (insn16 & N32_BIT (7)) /* swi37.fp */
7556 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7558 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
7560 case 0x8: /* beqz38 */
7561 insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7563 case 0x9: /* bnez38 */
7564 insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16));
7566 case 0xa: /* beqs38/j8, implied r5 */
7567 if (N16_RT38 (insn16) == 5)
7568 insn = N32_JI (J, N16_IMM8S (insn16));
7570 insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7572 case 0xb: /* bnes38 and others */
7573 if (N16_RT38 (insn16) == 5)
7575 switch (__GF (insn16, 5, 3))
7578 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0);
7581 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1);
7584 insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0);
7586 case 2: /* ex9.it imm5 */
7587 /* ex9.it had no 32-bit variantl. */
7589 case 5: /* add5.pc */
7590 /* add5.pc had no 32-bit variantl. */
7595 insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
7597 case 0xe: /* lwi37/swi37 */
7598 if (insn16 & (1 << 7)) /* swi37.sp */
7599 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7601 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
7606 if (insn & 0x80000000)
7615 is_sda_access_insn (unsigned long insn)
7617 switch (N32_OP6 (insn))
7638 static unsigned long
7639 turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn)
7645 case R_NDS32_GOT_LO12:
7646 case R_NDS32_GOTOFF_LO12:
7647 case R_NDS32_PLTREL_LO12:
7648 case R_NDS32_PLT_GOTREL_LO12:
7649 case R_NDS32_LO12S0_RELA:
7650 switch (N32_OP6 (insn))
7654 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
7658 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), N32_BIT (19));
7662 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
7666 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19));
7671 case R_NDS32_LO12S1_RELA:
7672 switch (N32_OP6 (insn))
7676 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
7680 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (18));
7684 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (19));
7689 case R_NDS32_LO12S2_RELA:
7690 switch (N32_OP6 (insn))
7694 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
7698 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
7703 case R_NDS32_LO12S2_DP_RELA:
7704 case R_NDS32_LO12S2_SP_RELA:
7705 oinsn = (insn & 0x7ff07000) | (REG_GP << 15);
7715 /* Linker hasn't found the correct merge section for non-section symbol
7716 in relax time, this work is left to the function elf_link_input_bfd().
7717 So for non-section symbol, _bfd_merged_section_offset is also needed
7718 to find the correct symbol address. */
7721 nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym,
7722 asection **psec, Elf_Internal_Rela *rel)
7724 asection *sec = *psec;
7727 relocation = (sec->output_section->vma
7728 + sec->output_offset + sym->st_value);
7729 if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
7731 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7733 _bfd_merged_section_offset (abfd, psec,
7734 elf_section_data (sec)->sec_info,
7735 sym->st_value + rel->r_addend);
7738 _bfd_merged_section_offset (abfd, psec,
7739 elf_section_data (sec)->sec_info,
7740 sym->st_value) + rel->r_addend;
7744 /* If we have changed the section, and our original section is
7745 marked with SEC_EXCLUDE, it means that the original
7746 SEC_MERGE section has been completely subsumed in some
7747 other SEC_MERGE section. In this case, we need to leave
7748 some info around for --emit-relocs. */
7749 if ((sec->flags & SEC_EXCLUDE) != 0)
7750 sec->kept_section = *psec;
7753 rel->r_addend -= relocation;
7754 rel->r_addend += sec->output_section->vma + sec->output_offset;
7760 calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel,
7761 Elf_Internal_Sym *isymbuf,
7762 Elf_Internal_Shdr *symtab_hdr)
7764 bfd_signed_vma foff;
7765 bfd_vma symval, addend;
7766 Elf_Internal_Rela irel_fn;
7767 Elf_Internal_Sym *isym;
7770 /* Get the value of the symbol referred to by the reloc. */
7771 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7773 /* A local symbol. */
7774 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7776 if (isym->st_shndx == SHN_UNDEF)
7777 sym_sec = bfd_und_section_ptr;
7778 else if (isym->st_shndx == SHN_ABS)
7779 sym_sec = bfd_abs_section_ptr;
7780 else if (isym->st_shndx == SHN_COMMON)
7781 sym_sec = bfd_com_section_ptr;
7783 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7784 memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela));
7785 symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn);
7786 addend = irel_fn.r_addend;
7791 struct elf_link_hash_entry *h;
7793 /* An external symbol. */
7794 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7795 h = elf_sym_hashes (abfd)[indx];
7796 BFD_ASSERT (h != NULL);
7798 while (h->root.type == bfd_link_hash_indirect
7799 || h->root.type == bfd_link_hash_warning)
7800 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7802 if (h->root.type != bfd_link_hash_defined
7803 && h->root.type != bfd_link_hash_defweak)
7804 /* This appears to be a reference to an undefined
7805 symbol. Just ignore it--it will be caught by the
7806 regular reloc processing. */
7809 if (h->root.u.def.section->flags & SEC_MERGE)
7811 sym_sec = h->root.u.def.section;
7812 symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data
7813 (sym_sec)->sec_info, h->root.u.def.value);
7814 symval = symval + sym_sec->output_section->vma
7815 + sym_sec->output_offset;
7818 symval = (h->root.u.def.value
7819 + h->root.u.def.section->output_section->vma
7820 + h->root.u.def.section->output_offset);
7821 addend = irel->r_addend;
7824 foff = symval + addend;
7830 calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info,
7831 Elf_Internal_Rela *irel,
7832 Elf_Internal_Shdr *symtab_hdr)
7835 bfd_vma *local_got_offsets;
7836 /* Get the value of the symbol referred to by the reloc. */
7837 struct elf_link_hash_entry *h;
7838 struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info);
7840 /* An external symbol. */
7841 symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7842 h = elf_sym_hashes (abfd)[symndx];
7843 while (h->root.type == bfd_link_hash_indirect
7844 || h->root.type == bfd_link_hash_warning)
7845 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7849 BFD_ASSERT (h != NULL);
7850 return (htab->root.sgot->output_section->vma
7851 + htab->root.sgot->output_offset
7856 local_got_offsets = elf_local_got_offsets (abfd);
7857 BFD_ASSERT (local_got_offsets != NULL);
7858 return (htab->root.sgot->output_section->vma
7859 + htab->root.sgot->output_offset
7860 + local_got_offsets[ELF32_R_SYM (irel->r_info)]);
7863 /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */
7864 /* The check of h->root.type is passed. */
7868 is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED,
7869 asection *sec, Elf_Internal_Rela *rel)
7872 unsigned short insn16;
7874 if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG))
7876 contents = elf_section_data (sec)->this_hdr.contents;
7877 insn16 = bfd_getb16 (contents + rel->r_offset);
7878 if (insn16 == NDS32_NOP16)
7883 /* It checks whether the instruction could be converted to
7884 16-bit form and returns the converted one.
7886 `internal_relocs' is supposed to be sorted. */
7889 is_convert_32_to_16 (bfd *abfd, asection *sec,
7890 Elf_Internal_Rela *reloc,
7891 Elf_Internal_Rela *internal_relocs,
7892 Elf_Internal_Rela *irelend,
7895 #define NORMAL_32_TO_16 (1 << 0)
7896 #define SPECIAL_32_TO_16 (1 << 1)
7897 bfd_byte *contents = NULL;
7901 Elf_Internal_Rela *pc_rel;
7902 int pic_ext_target = 0;
7903 Elf_Internal_Shdr *symtab_hdr;
7904 Elf_Internal_Sym *isymbuf = NULL;
7908 if (reloc->r_offset + 4 > sec->size)
7911 offset = reloc->r_offset;
7913 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
7915 insn = bfd_getb32 (contents + offset);
7917 if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL))
7918 convert_type = NORMAL_32_TO_16;
7919 else if (special_convert_32_to_16 (insn, insn16, reloc))
7920 convert_type = SPECIAL_32_TO_16;
7924 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7925 if (!nds32_get_local_syms (abfd, sec, &isymbuf))
7928 /* Find the first relocation of the same relocation-type,
7929 so we iteratie them forward. */
7931 while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset)
7934 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
7936 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
7937 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
7938 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA
7939 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
7941 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
7943 if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1
7948 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
7950 /* movi => movi55 */
7951 mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf,
7953 /* mem_addr is unsigned, but the value should
7954 be between [-16, 15]. */
7955 if ((mem_addr + 0x10) >> 5)
7959 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20)
7960 || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12))
7962 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
7963 because it can be relaxed to addi for TLS_LE_ADD. */
7966 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
7967 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
7968 && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG)
7969 && convert_type == SPECIAL_32_TO_16)
7972 We've selected a best fp-base for this access, so we can
7973 always resolve it anyway. Do nothing. */
7976 else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE
7977 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT))
7978 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY)
7979 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16))
7980 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE)
7981 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA)))
7983 /* Prevent unresolved addi instruction translate
7984 to addi45 or addi333. */
7987 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
7989 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr,
7991 if (off >= ACCURATE_U9BIT_S1 || off <= 0)
8001 nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents,
8002 Elf_Internal_Rela *reloc,
8003 Elf_Internal_Rela *internal_relocs,
8004 Elf_Internal_Rela *irelend,
8005 unsigned short insn16)
8007 Elf_Internal_Rela *pc_rel;
8010 offset = reloc->r_offset;
8011 bfd_putb16 (insn16, contents + offset);
8012 /* Find the first relocation of the same relocation-type,
8013 so we iteratie them forward. */
8015 while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset)
8018 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8020 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8021 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8022 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA)
8025 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA);
8027 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8029 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL);
8030 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8032 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA);
8033 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8034 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8036 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA);
8037 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8039 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA);
8043 /* Find a relocation of type specified by `reloc_type'
8044 of the same r_offset with reloc.
8045 If not found, return irelend.
8047 Assuming relocations are sorted by r_offset,
8048 we find the relocation from `reloc' backward untill relocs,
8049 or find it from `reloc' forward untill irelend. */
8051 static Elf_Internal_Rela *
8052 find_relocs_at_address (Elf_Internal_Rela *reloc,
8053 Elf_Internal_Rela *relocs,
8054 Elf_Internal_Rela *irelend,
8055 enum elf_nds32_reloc_type reloc_type)
8057 Elf_Internal_Rela *rel_t;
8059 /* Find backward. */
8061 rel_t >= relocs && rel_t->r_offset == reloc->r_offset;
8063 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8066 /* We didn't find it backward. Try find it forward. */
8068 rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8070 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8076 /* Find a relocation of specified type and offset.
8077 `reloc' is just a refence point to find a relocation at specified offset.
8078 If not found, return irelend.
8080 Assuming relocations are sorted by r_offset,
8081 we find the relocation from `reloc' backward untill relocs,
8082 or find it from `reloc' forward untill irelend. */
8084 static Elf_Internal_Rela *
8085 find_relocs_at_address_addr (Elf_Internal_Rela *reloc,
8086 Elf_Internal_Rela *relocs,
8087 Elf_Internal_Rela *irelend,
8088 enum elf_nds32_reloc_type reloc_type,
8091 Elf_Internal_Rela *rel_t = NULL;
8093 /* First, we try to find a relocation of offset `offset_p',
8094 and then we use find_relocs_at_address to find specific type. */
8096 if (reloc->r_offset > offset_p)
8098 /* Find backward. */
8100 rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--)
8103 else if (reloc->r_offset < offset_p)
8107 rel_t < irelend && rel_t->r_offset < offset_p; rel_t++)
8114 if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p)
8117 return find_relocs_at_address (rel_t, relocs, irelend, reloc_type);
8121 nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc,
8122 Elf_Internal_Rela *internal_relocs,
8123 Elf_Internal_Rela *irelend,
8124 unsigned char reloc_type)
8126 Elf_Internal_Rela *rel_t;
8129 rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset;
8131 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8133 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8134 && rel_t->r_addend == reloc->r_addend)
8139 for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8141 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8143 if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info)
8144 && rel_t->r_addend == reloc->r_addend)
8152 typedef struct nds32_elf_blank nds32_elf_blank_t;
8153 struct nds32_elf_blank
8155 /* Where the blank begins. */
8157 /* The size of the blank. */
8159 /* The accumulative size before this blank. */
8161 nds32_elf_blank_t *next;
8162 nds32_elf_blank_t *prev;
8165 static nds32_elf_blank_t *blank_free_list = NULL;
8167 static nds32_elf_blank_t *
8168 create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p)
8170 nds32_elf_blank_t *blank_t;
8172 if (blank_free_list)
8174 blank_t = blank_free_list;
8175 blank_free_list = blank_free_list->next;
8178 blank_t = bfd_malloc (sizeof (nds32_elf_blank_t));
8180 if (blank_t == NULL)
8183 blank_t->offset = offset_p;
8184 blank_t->size = size_p;
8185 blank_t->total_size = 0;
8186 blank_t->next = NULL;
8187 blank_t->prev = NULL;
8193 remove_nds32_elf_blank (nds32_elf_blank_t *blank_p)
8195 if (blank_free_list)
8197 blank_free_list->prev = blank_p;
8198 blank_p->next = blank_free_list;
8201 blank_p->next = NULL;
8203 blank_p->prev = NULL;
8204 blank_free_list = blank_p;
8208 clean_nds32_elf_blank (void)
8210 nds32_elf_blank_t *blank_t;
8212 while (blank_free_list)
8214 blank_t = blank_free_list;
8215 blank_free_list = blank_free_list->next;
8220 static nds32_elf_blank_t *
8221 search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr)
8223 nds32_elf_blank_t *blank_t;
8229 while (blank_t && addr < blank_t->offset)
8230 blank_t = blank_t->prev;
8231 while (blank_t && blank_t->next && addr >= blank_t->next->offset)
8232 blank_t = blank_t->next;
8238 get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8241 nds32_elf_blank_t *blank_t;
8243 blank_t = search_nds32_elf_blank (*blank_p, addr);
8250 if (addr < blank_t->offset + blank_t->size)
8251 return blank_t->total_size + (addr - blank_t->offset);
8253 return blank_t->total_size + blank_t->size;
8257 insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len)
8259 nds32_elf_blank_t *blank_t, *blank_t2;
8263 *blank_p = create_nds32_elf_blank (addr, len);
8264 return *blank_p ? TRUE : FALSE;
8267 blank_t = search_nds32_elf_blank (*blank_p, addr);
8269 if (blank_t == NULL)
8271 blank_t = create_nds32_elf_blank (addr, len);
8274 while ((*blank_p)->prev != NULL)
8275 *blank_p = (*blank_p)->prev;
8276 blank_t->next = *blank_p;
8277 (*blank_p)->prev = blank_t;
8278 (*blank_p) = blank_t;
8282 if (addr < blank_t->offset + blank_t->size)
8284 if (addr > blank_t->offset + blank_t->size)
8285 blank_t->size = addr - blank_t->offset;
8289 blank_t2 = create_nds32_elf_blank (addr, len);
8294 blank_t->next->prev = blank_t2;
8295 blank_t2->next = blank_t->next;
8297 blank_t2->prev = blank_t;
8298 blank_t->next = blank_t2;
8299 *blank_p = blank_t2;
8306 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
8309 nds32_elf_blank_t *blank_t;
8311 if (!insert_nds32_elf_blank (blank_p, addr, len))
8318 blank_t->total_size = 0;
8319 blank_t = blank_t->next;
8324 blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size;
8325 blank_t = blank_t->next;
8332 calc_nds32_blank_total (nds32_elf_blank_t *blank_p)
8334 nds32_elf_blank_t *blank_t;
8335 bfd_vma total_size = 0;
8341 while (blank_t->prev)
8342 blank_t = blank_t->prev;
8345 blank_t->total_size = total_size;
8346 total_size += blank_t->size;
8347 blank_t = blank_t->next;
8352 nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec,
8353 nds32_elf_blank_t *blank_p)
8355 Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */
8356 Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */
8357 Elf_Internal_Sym *isymend; /* Symbol entry iterator. */
8358 unsigned int sec_shndx; /* The section the be relaxed. */
8359 bfd_byte *contents; /* Contents data of iterating section. */
8360 Elf_Internal_Rela *internal_relocs;
8361 Elf_Internal_Rela *irel;
8362 Elf_Internal_Rela *irelend;
8363 struct elf_link_hash_entry **sym_hashes;
8364 struct elf_link_hash_entry **end_hashes;
8365 unsigned int symcount;
8367 nds32_elf_blank_t *blank_t;
8368 nds32_elf_blank_t *blank_t2;
8369 nds32_elf_blank_t *blank_head;
8371 blank_head = blank_t = blank_p;
8372 while (blank_head->prev != NULL)
8373 blank_head = blank_head->prev;
8374 while (blank_t->next != NULL)
8375 blank_t = blank_t->next;
8377 if (blank_t->offset + blank_t->size <= sec->size)
8379 blank_t->next = create_nds32_elf_blank (sec->size + 4, 0);
8380 blank_t->next->prev = blank_t;
8382 if (blank_head->offset > 0)
8384 blank_head->prev = create_nds32_elf_blank (0, 0);
8385 blank_head->prev->next = blank_head;
8386 blank_head = blank_head->prev;
8389 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
8391 /* The deletion must stop at the next ALIGN reloc for an alignment
8392 power larger than the number of bytes we are deleting. */
8394 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8395 if (!nds32_get_local_syms (abfd, sec, &isym))
8400 isym = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8401 symtab_hdr->sh_info, 0, NULL, NULL, NULL);
8402 symtab_hdr->contents = (bfd_byte *) isym;
8405 if (isym == NULL || symtab_hdr->sh_info == 0)
8408 blank_t = blank_head;
8409 calc_nds32_blank_total (blank_head);
8411 for (sect = abfd->sections; sect != NULL; sect = sect->next)
8413 /* Adjust all the relocs. */
8415 /* Relocations MUST be kept in memory, because relaxation adjust them. */
8416 internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL,
8417 TRUE /* keep_memory */);
8418 irelend = internal_relocs + sect->reloc_count;
8420 blank_t = blank_head;
8421 blank_t2 = blank_head;
8423 if (!(sect->flags & SEC_RELOC))
8426 nds32_get_section_contents (abfd, sect, &contents, TRUE);
8428 for (irel = internal_relocs; irel < irelend; irel++)
8432 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8
8433 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32
8434 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8436 unsigned long val = 0;
8438 long before, between;
8441 switch (ELF32_R_TYPE (irel->r_info))
8444 offset = bfd_get_8 (abfd, contents + irel->r_offset);
8446 case R_NDS32_DIFF16:
8447 offset = bfd_get_16 (abfd, contents + irel->r_offset);
8449 case R_NDS32_DIFF32:
8450 val = bfd_get_32 (abfd, contents + irel->r_offset);
8451 /* Get the signed bit and mask for the high part. The
8452 gcc will alarm when right shift 32-bit since the
8453 type size of long may be 32-bit. */
8454 mask = 0 - (val >> 31);
8456 offset = (val | (mask - 0xffffffff));
8465 0 |encoded in location|
8466 |------------|-------------------|---------
8468 -- before ---| *****************
8469 --------------------- between ---|
8471 We only care how much data are relax between DIFF,
8474 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8475 between = get_nds32_elf_blank_total (&blank_t,
8476 irel->r_addend + offset, 0);
8477 if (between == before)
8478 goto done_adjust_diff;
8480 switch (ELF32_R_TYPE (irel->r_info))
8483 bfd_put_8 (abfd, offset - (between - before),
8484 contents + irel->r_offset);
8486 case R_NDS32_DIFF16:
8487 bfd_put_16 (abfd, offset - (between - before),
8488 contents + irel->r_offset);
8490 case R_NDS32_DIFF32:
8491 bfd_put_32 (abfd, offset - (between - before),
8492 contents + irel->r_offset);
8496 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128
8497 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
8500 unsigned int len = 0;
8501 unsigned long before, between;
8504 val = _bfd_read_unsigned_leb128 (abfd, contents + irel->r_offset,
8507 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
8508 between = get_nds32_elf_blank_total (&blank_t,
8509 irel->r_addend + val, 0);
8510 if (between == before)
8511 goto done_adjust_diff;
8513 p = contents + irel->r_offset;
8515 memset (p, 0x80, len);
8517 p = write_uleb128 (p, val - (between - before)) - 1;
8525 raddr = irel->r_offset;
8526 irel->r_offset -= get_nds32_elf_blank_total (&blank_t2,
8529 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
8531 if (blank_t2 && blank_t2->next
8532 && (blank_t2->offset > raddr
8533 || blank_t2->next->offset <= raddr))
8535 (_("%pB: Error: search_nds32_elf_blank reports wrong node\n"), abfd);
8537 /* Mark reloc in deleted portion as NONE.
8538 For some relocs like R_NDS32_LABEL that doesn't modify the
8539 content in the section. R_NDS32_LABEL doesn't belong to the
8540 instruction in the section, so we should preserve it. */
8541 if (raddr >= blank_t2->offset
8542 && raddr < blank_t2->offset + blank_t2->size
8543 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL
8544 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN
8545 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
8546 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
8547 && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND
8548 && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND)
8550 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
8556 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE
8557 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
8558 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
8561 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info
8562 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx
8563 && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION)
8565 if (irel->r_addend <= sec->size)
8567 get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1);
8572 /* Adjust the local symbols defined in this section. */
8573 blank_t = blank_head;
8574 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
8576 if (isym->st_shndx == sec_shndx)
8578 if (isym->st_value <= sec->size)
8581 bfd_vma orig_addr = isym->st_value;
8583 ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1);
8584 isym->st_value -= ahead;
8586 /* Adjust function size. */
8587 if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC
8588 && isym->st_size > 0)
8590 get_nds32_elf_blank_total
8591 (&blank_t, orig_addr + isym->st_size, 0) - ahead;
8596 /* Now adjust the global symbols defined in this section. */
8597 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
8598 - symtab_hdr->sh_info);
8599 sym_hashes = elf_sym_hashes (abfd);
8600 end_hashes = sym_hashes + symcount;
8601 blank_t = blank_head;
8602 for (; sym_hashes < end_hashes; sym_hashes++)
8604 struct elf_link_hash_entry *sym_hash = *sym_hashes;
8606 if ((sym_hash->root.type == bfd_link_hash_defined
8607 || sym_hash->root.type == bfd_link_hash_defweak)
8608 && sym_hash->root.u.def.section == sec)
8610 if (sym_hash->root.u.def.value <= sec->size)
8613 bfd_vma orig_addr = sym_hash->root.u.def.value;
8615 ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1);
8616 sym_hash->root.u.def.value -= ahead;
8618 /* Adjust function size. */
8619 if (sym_hash->type == STT_FUNC)
8621 get_nds32_elf_blank_total
8622 (&blank_t, orig_addr + sym_hash->size, 0) - ahead;
8628 contents = elf_section_data (sec)->this_hdr.contents;
8629 blank_t = blank_head;
8630 while (blank_t->next)
8632 /* Actually delete the bytes. */
8634 /* If current blank is the last blank overlap with current section,
8635 go to finish process. */
8636 if (sec->size <= (blank_t->next->offset))
8639 memmove (contents + blank_t->offset - blank_t->total_size,
8640 contents + blank_t->offset + blank_t->size,
8641 blank_t->next->offset - (blank_t->offset + blank_t->size));
8643 blank_t = blank_t->next;
8646 if (sec->size > (blank_t->offset + blank_t->size))
8648 /* There are remaining code between blank and section boundary.
8649 Move the remaining code to appropriate location. */
8650 memmove (contents + blank_t->offset - blank_t->total_size,
8651 contents + blank_t->offset + blank_t->size,
8652 sec->size - (blank_t->offset + blank_t->size));
8653 sec->size -= blank_t->total_size + blank_t->size;
8656 /* This blank is not entirely included in the section,
8657 reduce the section size by only part of the blank size. */
8658 sec->size -= blank_t->total_size + (sec->size - blank_t->offset);
8662 blank_t = blank_head;
8663 blank_head = blank_head->next;
8664 remove_nds32_elf_blank (blank_t);
8670 /* Get the contents of a section. */
8673 nds32_get_section_contents (bfd *abfd, asection *sec,
8674 bfd_byte **contents_p, bfd_boolean cache)
8676 /* Get the section contents. */
8677 if (elf_section_data (sec)->this_hdr.contents != NULL)
8678 *contents_p = elf_section_data (sec)->this_hdr.contents;
8681 if (!bfd_malloc_and_get_section (abfd, sec, contents_p))
8684 elf_section_data (sec)->this_hdr.contents = *contents_p;
8690 /* Get the contents of the internal symbol of abfd. */
8693 nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED,
8694 Elf_Internal_Sym **isymbuf_p)
8696 Elf_Internal_Shdr *symtab_hdr;
8697 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8699 /* Read this BFD's local symbols if we haven't done so already. */
8700 if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0)
8702 *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents;
8703 if (*isymbuf_p == NULL)
8705 *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr,
8706 symtab_hdr->sh_info, 0,
8708 if (*isymbuf_p == NULL)
8712 symtab_hdr->contents = (bfd_byte *) (*isymbuf_p);
8717 /* Range of small data. */
8718 static bfd_vma sdata_range[2][2];
8719 static bfd_vma const sdata_init_range[2] =
8720 { ACCURATE_12BIT_S1, ACCURATE_19BIT };
8723 nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED,
8724 bfd_byte *contents, bfd_vma addr)
8726 unsigned long insn = bfd_getb32 (contents + addr);
8728 if (insn & 0x80000000)
8734 /* Set the gp relax range. We have to measure the safe range
8735 to do gp relaxation. */
8738 relax_range_measurement (bfd *abfd)
8740 asection *sec_f, *sec_b;
8741 /* For upper bound. */
8742 bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize;
8744 static int decide_relax_range = 0;
8746 int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]);
8748 if (decide_relax_range)
8750 decide_relax_range = 1;
8752 if (sda_rela_sec == NULL)
8754 /* Since there is no data sections, we assume the range is page size. */
8755 for (i = 0; i < range_number; i++)
8757 sdata_range[i][0] = sdata_init_range[i] - 0x1000;
8758 sdata_range[i][1] = sdata_init_range[i] - 0x1000;
8763 /* Get the biggest alignment power after the gp located section. */
8764 sec_f = sda_rela_sec->output_section;
8765 sec_b = sec_f->next;
8767 while (sec_b != NULL)
8769 if ((unsigned)(1 << sec_b->alignment_power) > align)
8770 align = (1 << sec_b->alignment_power);
8771 sec_b = sec_b->next;
8774 /* I guess we can not determine the section before
8775 gp located section, so we assume the align is max page size. */
8776 for (i = 0; i < range_number; i++)
8778 sdata_range[i][1] = sdata_init_range[i] - align;
8779 BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]);
8780 sdata_range[i][0] = sdata_init_range[i] - maxpgsz;
8781 BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]);
8785 /* These are macros used to check flags encoded in r_addend.
8786 They are only used by nds32_elf_relax_section (). */
8787 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
8788 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
8789 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
8790 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
8792 static const char * unrecognized_reloc_msg =
8793 /* xgettext:c-format */
8794 N_("%pB: warning: %s points to unrecognized reloc at %#Lx");
8796 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
8799 nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
8800 Elf_Internal_Rela *internal_relocs, int *insn_len,
8801 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
8802 Elf_Internal_Shdr *symtab_hdr)
8804 /* There are 3 variations for LONGCALL1
8805 case 4-4-2; 16-bit on, optimize off or optimize for space
8806 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8807 ori ta, ta, lo12(symbol) ; LO12S0
8810 case 4-4-4; 16-bit off, optimize don't care
8811 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8812 ori ta, ta, lo12(symbol) ; LO12S0
8815 case 4-4-4; 16-bit on, optimize for speed
8816 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8817 ori ta, ta, lo12(symbol) ; LO12S0
8819 Check code for -mlong-calls output. */
8821 /* Get the reloc for the address from which the register is
8822 being loaded. This reloc will tell us which function is
8823 actually being called. */
8826 int seq_len; /* Original length of instruction sequence. */
8828 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
8829 int pic_ext_target = 0;
8830 bfd_signed_vma foff;
8833 irelend = internal_relocs + sec->reloc_count;
8834 seq_len = GET_SEQ_LEN (irel->r_addend);
8835 laddr = irel->r_offset;
8836 *insn_len = seq_len;
8838 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
8839 R_NDS32_HI20_RELA, laddr);
8840 lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
8841 R_NDS32_LO12S0_ORI_RELA,
8844 if (hi_irelfn == irelend || lo_irelfn == irelend)
8846 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL1",
8851 /* Get the value of the symbol referred to by the reloc. */
8852 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
8855 /* This condition only happened when symbol is undefined. */
8856 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
8857 || foff >= CONSERVATIVE_24BIT_S1)
8860 /* Relax to: jal symbol; 25_PCREL */
8861 /* For simplicity of coding, we are going to modify the section
8862 contents, the section relocs, and the BFD symbol table. We
8863 must tell the rest of the code not to free up this
8864 information. It would be possible to instead create a table
8865 of changes which have to be made, as is done in coff-mips.c;
8866 that would be more work, but would require less memory when
8867 the linker is run. */
8869 /* Replace the long call with a jal. */
8870 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
8871 R_NDS32_25_PCREL_RELA);
8872 irel->r_addend = hi_irelfn->r_addend;
8874 /* We don't resolve this here but resolve it in relocate_section. */
8876 bfd_putb32 (insn, contents + irel->r_offset);
8879 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
8881 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
8886 insn16 = NDS32_NOP16;
8887 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
8889 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
8890 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
8896 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
8897 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
8900 nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
8901 Elf_Internal_Rela *internal_relocs, int *insn_len,
8902 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
8903 Elf_Internal_Shdr *symtab_hdr)
8905 /* bltz rt, .L1 ; LONGCALL2
8906 jal symbol ; 25_PCREL
8909 /* Get the reloc for the address from which the register is
8910 being loaded. This reloc will tell us which function is
8911 actually being called. */
8915 Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend;
8916 int pic_ext_target = 0;
8917 bfd_signed_vma foff;
8919 irelend = internal_relocs + sec->reloc_count;
8920 laddr = irel->r_offset;
8922 find_relocs_at_address_addr (irel, internal_relocs, irelend,
8923 R_NDS32_25_PCREL_RELA, laddr + 4);
8925 if (i1_irelfn == irelend)
8927 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL2",
8932 insn = bfd_getb32 (contents + laddr);
8934 /* Get the value of the symbol referred to by the reloc. */
8935 foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr,
8938 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
8939 || foff >= CONSERVATIVE_16BIT_S1)
8942 /* Relax to bgezal rt, label ; 17_PCREL
8943 or bltzal rt, label ; 17_PCREL */
8945 /* Convert to complimentary conditional call. */
8946 insn = CONVERT_CONDITION_CALL (insn);
8948 /* For simplicity of coding, we are going to modify the section
8949 contents, the section relocs, and the BFD symbol table. We
8950 must tell the rest of the code not to free up this
8951 information. It would be possible to instead create a table
8952 of changes which have to be made, as is done in coff-mips.c;
8953 that would be more work, but would require less memory when
8954 the linker is run. */
8956 /* Clean unnessary relocations. */
8958 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE);
8960 find_relocs_at_address_addr (irel, internal_relocs, irelend,
8961 R_NDS32_17_PCREL_RELA, laddr);
8962 if (cond_irelfn != irelend)
8963 cond_irelfn->r_info =
8964 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE);
8966 /* Replace the long call with a bgezal. */
8967 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info),
8968 R_NDS32_17_PCREL_RELA);
8969 irel->r_addend = i1_irelfn->r_addend;
8971 bfd_putb32 (insn, contents + irel->r_offset);
8977 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
8980 nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
8981 Elf_Internal_Rela *internal_relocs, int *insn_len,
8982 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
8983 Elf_Internal_Shdr *symtab_hdr)
8985 /* There are 3 variations for LONGCALL3
8986 case 4-4-4-2; 16-bit on, optimize off or optimize for space
8987 bltz rt, $1 ; LONGCALL3
8988 sethi ta, hi20(symbol) ; HI20
8989 ori ta, ta, lo12(symbol) ; LO12S0
8993 case 4-4-4-4; 16-bit off, optimize don't care
8994 bltz rt, $1 ; LONGCALL3
8995 sethi ta, hi20(symbol) ; HI20
8996 ori ta, ta, lo12(symbol) ; LO12S0
9000 case 4-4-4-4; 16-bit on, optimize for speed
9001 bltz rt, $1 ; LONGCALL3
9002 sethi ta, hi20(symbol) ; HI20
9003 ori ta, ta, lo12(symbol) ; LO12S0
9007 /* Get the reloc for the address from which the register is
9008 being loaded. This reloc will tell us which function is
9009 actually being called. */
9012 int seq_len; /* Original length of instruction sequence. */
9014 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9015 int pic_ext_target = 0;
9016 bfd_signed_vma foff;
9019 irelend = internal_relocs + sec->reloc_count;
9020 seq_len = GET_SEQ_LEN (irel->r_addend);
9021 laddr = irel->r_offset;
9022 *insn_len = seq_len;
9025 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9026 R_NDS32_HI20_RELA, laddr + 4);
9028 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9029 R_NDS32_LO12S0_ORI_RELA, laddr + 8);
9031 if (hi_irelfn == irelend || lo_irelfn == irelend)
9033 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL3",
9038 /* Get the value of the symbol referred to by the reloc. */
9039 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9042 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9043 || foff >= CONSERVATIVE_24BIT_S1)
9046 insn = bfd_getb32 (contents + laddr);
9047 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9049 /* Relax to bgezal rt, label ; 17_PCREL
9050 or bltzal rt, label ; 17_PCREL */
9052 /* Convert to complimentary conditional call. */
9053 insn = CONVERT_CONDITION_CALL (insn);
9054 bfd_putb32 (insn, contents + irel->r_offset);
9058 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9060 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9062 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9065 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9066 R_NDS32_17_PCREL_RELA, laddr);
9067 if (cond_irelfn != irelend)
9069 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9070 R_NDS32_17_PCREL_RELA);
9071 cond_irelfn->r_addend = hi_irelfn->r_addend;
9076 insn16 = NDS32_NOP16;
9077 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9078 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9080 hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9084 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9086 /* Relax to the following instruction sequence
9087 bltz rt, $1 ; LONGCALL2
9088 jal symbol ; 25_PCREL
9092 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9094 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9095 R_NDS32_25_PCREL_RELA);
9097 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2);
9100 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9104 insn16 = NDS32_NOP16;
9105 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9107 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9108 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9115 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9118 nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9119 Elf_Internal_Rela *internal_relocs, int *insn_len,
9120 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9121 Elf_Internal_Shdr *symtab_hdr)
9123 /* There are 3 variations for LONGJUMP1
9124 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9125 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9126 ori ta, ta, lo12(symbol) ; LO12S0
9129 case 4-4-4; 16-bit off, optimize don't care
9130 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9131 ori ta, ta, lo12(symbol) ; LO12S0
9134 case 4-4-4; 16-bit on, optimize for speed
9135 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9136 ori ta, ta, lo12(symbol) ; LO12S0
9139 /* Get the reloc for the address from which the register is
9140 being loaded. This reloc will tell us which function is
9141 actually being called. */
9144 int seq_len; /* Original length of instruction sequence. */
9145 int insn16_on; /* 16-bit on/off. */
9147 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9148 int pic_ext_target = 0;
9149 bfd_signed_vma foff;
9151 unsigned long reloc;
9153 irelend = internal_relocs + sec->reloc_count;
9154 seq_len = GET_SEQ_LEN (irel->r_addend);
9155 laddr = irel->r_offset;
9156 *insn_len = seq_len;
9157 insn16_on = IS_16BIT_ON (irel->r_addend);
9160 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9161 R_NDS32_HI20_RELA, laddr);
9163 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9164 R_NDS32_LO12S0_ORI_RELA, laddr + 4);
9165 if (hi_irelfn == irelend || lo_irelfn == irelend)
9167 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP1",
9172 /* Get the value of the symbol referred to by the reloc. */
9173 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9176 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
9177 || foff < -CONSERVATIVE_24BIT_S1)
9180 if (insn16_on && foff >= -ACCURATE_8BIT_S1
9181 && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2))
9184 /* 16-bit on, but not optimized for speed. */
9185 reloc = R_NDS32_9_PCREL_RELA;
9187 bfd_putb16 (insn16, contents + irel->r_offset);
9190 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9195 reloc = R_NDS32_25_PCREL_RELA;
9197 bfd_putb32 (insn, contents + irel->r_offset);
9200 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16);
9205 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9207 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9209 if ((seq_len & 0x2) && ((*insn_len & 2) == 0))
9211 insn16 = NDS32_NOP16;
9212 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9214 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9216 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9222 /* Revert condition branch. This function does not check if the input
9223 instruction is condition branch or not. */
9226 nds32_elf_convert_branch (uint16_t insn16, uint32_t insn,
9227 uint16_t *re_insn16, uint32_t *re_insn)
9229 uint32_t comp_insn = 0;
9230 uint16_t comp_insn16 = 0;
9234 if (N32_OP6 (insn) == N32_OP6_BR1)
9237 comp_insn = (insn ^ 0x4000) & 0xffffc000;
9238 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5)
9240 /* Insn can be contracted to 16-bit implied r5. */
9242 (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38;
9243 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9246 else if (N32_OP6 (insn) == N32_OP6_BR3)
9248 /* bnec $ta, imm11, label. */
9249 comp_insn = (insn ^ 0x80000) & 0xffffff00;
9253 comp_insn = (insn ^ 0x10000) & 0xffffc000;
9254 if (N32_BR2_SUB (insn) == N32_BR2_BEQZ
9255 || N32_BR2_SUB (insn) == N32_BR2_BNEZ)
9257 if (N32_IS_RT3 (insn))
9259 /* Insn can be contracted to 16-bit. */
9261 (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38;
9262 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
9264 else if (N32_RT5 (insn) == REG_R15)
9266 /* Insn can be contracted to 16-bit. */
9268 (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38;
9275 switch ((insn16 & 0xf000) >> 12)
9278 /* beqz38 or bnez38 */
9279 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9280 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ;
9281 comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20;
9285 /* beqs38 or bnes38 */
9286 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
9287 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ;
9288 comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20)
9293 /* beqzS8 or bnezS8 */
9294 comp_insn16 = (insn16 ^ 0x0100) & 0xff00;
9295 comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ;
9296 comp_insn |= REG_R15 << 20;
9303 if (comp_insn && re_insn)
9304 *re_insn = comp_insn;
9305 if (comp_insn16 && re_insn16)
9306 *re_insn16 = comp_insn16;
9309 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
9312 nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9313 Elf_Internal_Rela *internal_relocs, int *insn_len,
9314 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9315 Elf_Internal_Shdr *symtab_hdr)
9317 /* There are 3 variations for LONGJUMP2
9318 case 2-4; 1st insn convertible, 16-bit on,
9319 optimize off or optimize for space
9320 bnes38 rt, ra, $1 ; LONGJUMP2
9324 case 4-4; 1st insn not convertible
9325 bne rt, ra, $1 ; LONGJUMP2
9329 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9330 bne rt, ra, $1 ; LONGJUMP2
9334 /* Get the reloc for the address from which the register is
9335 being loaded. This reloc will tell us which function is
9336 actually being called. */
9339 int seq_len; /* Original length of instruction sequence. */
9340 Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend;
9341 int pic_ext_target = 0, first_size;
9343 bfd_signed_vma foff;
9344 uint32_t insn, re_insn = 0;
9345 uint16_t insn16, re_insn16 = 0;
9346 unsigned long reloc, cond_reloc;
9348 enum elf_nds32_reloc_type checked_types[] =
9349 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9351 irelend = internal_relocs + sec->reloc_count;
9352 seq_len = GET_SEQ_LEN (irel->r_addend);
9353 laddr = irel->r_offset;
9354 *insn_len = seq_len;
9355 first_size = (seq_len == 6) ? 2 : 4;
9358 find_relocs_at_address_addr (irel, internal_relocs,
9359 irelend, R_NDS32_25_PCREL_RELA,
9360 laddr + first_size);
9362 for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++)
9365 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9366 checked_types[i], laddr);
9367 if (cond_irelfn != irelend)
9371 if (i2_irelfn == irelend || cond_irelfn == irelend)
9373 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP2",
9378 /* Get the value of the symbol referred to by the reloc. */
9380 calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr,
9382 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9383 || foff >= CONSERVATIVE_16BIT_S1)
9386 /* Get the all corresponding instructions. */
9387 if (first_size == 4)
9389 insn = bfd_getb32 (contents + laddr);
9390 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9394 insn16 = bfd_getb16 (contents + laddr);
9395 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9398 if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size)
9399 && foff < ACCURATE_8BIT_S1 - first_size)
9401 if (first_size == 4)
9403 /* Don't convert it to 16-bit now, keep this as relaxable for
9404 ``label reloc; INSN16''. */
9406 /* Save comp_insn32 to buffer. */
9407 bfd_putb32 (re_insn, contents + irel->r_offset);
9409 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9410 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9411 cond_reloc = R_NDS32_INSN16;
9415 bfd_putb16 (re_insn16, contents + irel->r_offset);
9417 reloc = R_NDS32_9_PCREL_RELA;
9418 cond_reloc = R_NDS32_NONE;
9421 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9422 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9423 && foff < ACCURATE_14BIT_S1 - first_size))
9425 /* beqs label ; 15_PCREL */
9426 bfd_putb32 (re_insn, contents + irel->r_offset);
9428 reloc = R_NDS32_15_PCREL_RELA;
9429 cond_reloc = R_NDS32_NONE;
9431 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9432 && foff >= -CONSERVATIVE_16BIT_S1
9433 && foff < CONSERVATIVE_16BIT_S1)
9435 /* beqz label ; 17_PCREL */
9436 bfd_putb32 (re_insn, contents + irel->r_offset);
9438 reloc = R_NDS32_17_PCREL_RELA;
9439 cond_reloc = R_NDS32_NONE;
9444 /* Set all relocations. */
9445 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc);
9446 irel->r_addend = i2_irelfn->r_addend;
9448 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9450 cond_irelfn->r_addend = 0;
9452 if ((seq_len ^ *insn_len ) & 0x2)
9454 insn16 = NDS32_NOP16;
9455 bfd_putb16 (insn16, contents + irel->r_offset + 4);
9456 i2_irelfn->r_offset = 4;
9457 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9459 i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9463 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
9468 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
9471 nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9472 Elf_Internal_Rela *internal_relocs, int *insn_len,
9473 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9474 Elf_Internal_Shdr *symtab_hdr)
9476 /* There are 5 variations for LONGJUMP3
9477 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
9478 optimize off or optimize for space
9479 bnes38 rt, ra, $1 ; LONGJUMP3
9480 sethi ta, hi20(symbol) ; HI20
9481 ori ta, ta, lo12(symbol) ; LO12S0
9485 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
9486 bnes38 rt, ra, $1 ; LONGJUMP3
9487 sethi ta, hi20(symbol) ; HI20
9488 ori ta, ta, lo12(symbol) ; LO12S0
9492 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
9493 optimize off or optimize for space
9494 bne rt, ra, $1 ; LONGJUMP3
9495 sethi ta, hi20(symbol) ; HI20
9496 ori ta, ta, lo12(symbol) ; LO12S0
9500 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
9501 16-bit off if no INSN16
9502 bne rt, ra, $1 ; LONGJUMP3
9503 sethi ta, hi20(symbol) ; HI20
9504 ori ta, ta, lo12(symbol) ; LO12S0
9508 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
9509 16-bit off if no INSN16
9510 bne rt, ra, $1 ; LONGJUMP3
9511 sethi ta, hi20(symbol) ; HI20
9512 ori ta, ta, lo12(symbol) ; LO12S0
9516 /* Get the reloc for the address from which the register is
9517 being loaded. This reloc will tell us which function is
9518 actually being called. */
9519 enum elf_nds32_reloc_type checked_types[] =
9520 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
9522 int reloc_off = 0, cond_removed = 0, convertible;
9524 int seq_len; /* Original length of instruction sequence. */
9525 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9526 int pic_ext_target = 0, first_size;
9528 bfd_signed_vma foff;
9529 uint32_t insn, re_insn = 0;
9530 uint16_t insn16, re_insn16 = 0;
9531 unsigned long reloc, cond_reloc;
9533 irelend = internal_relocs + sec->reloc_count;
9534 seq_len = GET_SEQ_LEN (irel->r_addend);
9535 laddr = irel->r_offset;
9536 *insn_len = seq_len;
9538 convertible = IS_1ST_CONVERT (irel->r_addend);
9545 /* Get all needed relocations. */
9547 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9548 R_NDS32_HI20_RELA, laddr + first_size);
9550 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9551 R_NDS32_LO12S0_ORI_RELA,
9552 laddr + first_size + 4);
9554 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
9557 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9558 checked_types[i], laddr);
9559 if (cond_irelfn != irelend)
9563 if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend)
9565 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP3",
9570 /* Get the value of the symbol referred to by the reloc. */
9571 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr,
9574 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9575 || foff >= CONSERVATIVE_24BIT_S1)
9578 /* Get the all corresponding instructions. */
9579 if (first_size == 4)
9581 insn = bfd_getb32 (contents + laddr);
9582 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
9586 insn16 = bfd_getb16 (contents + laddr);
9587 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
9590 /* For simplicity of coding, we are going to modify the section
9591 contents, the section relocs, and the BFD symbol table. We
9592 must tell the rest of the code not to free up this
9593 information. It would be possible to instead create a table
9594 of changes which have to be made, as is done in coff-mips.c;
9595 that would be more work, but would require less memory when
9596 the linker is run. */
9598 if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size
9599 && foff < ACCURATE_8BIT_S1 - first_size)
9601 if (!(seq_len & 0x2))
9603 /* Don't convert it to 16-bit now, keep this as relaxable
9604 for ``label reloc; INSN1a''6. */
9605 /* Save comp_insn32 to buffer. */
9606 bfd_putb32 (re_insn, contents + irel->r_offset);
9608 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
9609 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
9610 cond_reloc = R_NDS32_INSN16;
9614 /* Not optimize for speed; convert sequence to 16-bit. */
9615 /* Save comp_insn16 to buffer. */
9616 bfd_putb16 (re_insn16, contents + irel->r_offset);
9618 reloc = R_NDS32_9_PCREL_RELA;
9619 cond_reloc = R_NDS32_NONE;
9623 else if (N32_OP6 (re_insn) == N32_OP6_BR1
9624 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
9625 && foff < ACCURATE_14BIT_S1 - first_size))
9627 /* beqs label ; 15_PCREL */
9628 bfd_putb32 (re_insn, contents + irel->r_offset);
9630 reloc = R_NDS32_15_PCREL_RELA;
9631 cond_reloc = R_NDS32_NONE;
9634 else if (N32_OP6 (re_insn) == N32_OP6_BR2
9635 && foff >= -CONSERVATIVE_16BIT_S1
9636 && foff < CONSERVATIVE_16BIT_S1)
9638 /* beqz label ; 17_PCREL */
9639 bfd_putb32 (re_insn, contents + irel->r_offset);
9641 reloc = R_NDS32_17_PCREL_RELA;
9642 cond_reloc = R_NDS32_NONE;
9645 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
9646 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
9648 /* Relax to one of the following 3 variations
9650 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
9652 bnes38 rt, $1 ; LONGJUMP2
9656 case 4-4; 1st insn not convertible, others don't care
9657 bne rt, ra, $1 ; LONGJUMP2
9661 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9662 bne rt, ra, $1 ; LONGJUMP2
9666 /* Offset for first instruction. */
9668 /* Use j label as second instruction. */
9669 *insn_len = 4 + first_size;
9671 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9672 reloc = R_NDS32_LONGJUMP2;
9673 cond_reloc = R_NDS32_25_PLTREL;
9678 if (cond_removed == 1)
9680 /* Set all relocations. */
9681 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9682 irel->r_addend = hi_irelfn->r_addend;
9684 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
9686 cond_irelfn->r_addend = 0;
9687 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9692 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
9693 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9697 if ((seq_len ^ *insn_len ) & 0x2)
9699 insn16 = NDS32_NOP16;
9700 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9701 lo_irelfn->r_offset = *insn_len;
9702 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9704 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9708 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9713 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
9716 nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9717 Elf_Internal_Rela *internal_relocs, int *insn_len,
9718 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9719 Elf_Internal_Shdr *symtab_hdr)
9721 /* The pattern for LONGCALL4. Support for function cse.
9722 sethi ta, hi20(symbol) ; LONGCALL4/HI20
9723 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9724 jral ta ; PTR_RES/EMPTY/INSN16 */
9728 Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel;
9729 Elf_Internal_Rela *irelend;
9730 int pic_ext_target = 0;
9731 bfd_signed_vma foff;
9733 irelend = internal_relocs + sec->reloc_count;
9734 laddr = irel->r_offset;
9736 /* Get the reloc for the address from which the register is
9737 being loaded. This reloc will tell us which function is
9738 actually being called. */
9739 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9740 R_NDS32_HI20_RELA, laddr);
9742 if (hi_irel == irelend)
9744 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4",
9749 /* Get the value of the symbol referred to by the reloc. */
9750 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
9753 /* This condition only happened when symbol is undefined. */
9754 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9755 || foff >= CONSERVATIVE_24BIT_S1)
9758 /* Relax to: jal symbol; 25_PCREL */
9759 /* For simplicity of coding, we are going to modify the section
9760 contents, the section relocs, and the BFD symbol table. We
9761 must tell the rest of the code not to free up this
9762 information. It would be possible to instead create a table
9763 of changes which have to be made, as is done in coff-mips.c;
9764 that would be more work, but would require less memory when
9765 the linker is run. */
9767 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9768 R_NDS32_PTR_RESOLVED, irel->r_addend);
9769 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9770 R_NDS32_EMPTY, irel->r_addend);
9772 if (ptr_irel == irelend || em_irel == irelend)
9774 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4",
9778 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
9779 insn = bfd_getb32 (contents + irel->r_addend);
9780 if (insn & 0x80000000)
9783 /* Replace the long call with a jal. */
9784 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
9785 R_NDS32_25_PCREL_RELA);
9786 ptr_irel->r_addend = 1;
9788 /* We don't resolve this here but resolve it in relocate_section. */
9790 bfd_putb32 (insn, contents + em_irel->r_offset);
9793 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9795 /* If there is function cse, HI20 can not remove now. */
9796 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9797 R_NDS32_LONGCALL4, laddr);
9798 if (call_irel == irelend)
9802 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
9805 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9806 R_NDS32_INSN16, irel->r_addend);
9807 if (insn_irel != irelend)
9809 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9814 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
9817 nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9818 Elf_Internal_Rela *internal_relocs, int *insn_len,
9819 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9820 Elf_Internal_Shdr *symtab_hdr)
9822 /* The pattern for LONGCALL5.
9823 bltz rt, .L1 ; LONGCALL5/17_PCREL
9824 jal symbol ; 25_PCREL
9829 Elf_Internal_Rela *cond_irel, *irelend;
9830 int pic_ext_target = 0;
9831 bfd_signed_vma foff;
9833 irelend = internal_relocs + sec->reloc_count;
9834 laddr = irel->r_offset;
9835 insn = bfd_getb32 (contents + laddr);
9837 /* Get the reloc for the address from which the register is
9838 being loaded. This reloc will tell us which function is
9839 actually being called. */
9841 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9842 R_NDS32_25_PCREL_RELA, irel->r_addend);
9843 if (cond_irel == irelend)
9845 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL5",
9850 /* Get the value of the symbol referred to by the reloc. */
9851 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
9854 if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1
9855 || foff >= CONSERVATIVE_16BIT_S1)
9858 /* Relax to bgezal rt, label ; 17_PCREL
9859 or bltzal rt, label ; 17_PCREL */
9861 /* Convert to complimentary conditional call. */
9862 insn = CONVERT_CONDITION_CALL (insn);
9864 /* For simplicity of coding, we are going to modify the section
9865 contents, the section relocs, and the BFD symbol table. We
9866 must tell the rest of the code not to free up this
9867 information. It would be possible to instead create a table
9868 of changes which have to be made, as is done in coff-mips.c;
9869 that would be more work, but would require less memory when
9870 the linker is run. */
9872 /* Modify relocation and contents. */
9874 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA);
9876 /* Replace the long call with a bgezal. */
9877 bfd_putb32 (insn, contents + cond_irel->r_offset);
9880 /* Clean unnessary relocations. */
9881 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9883 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9884 R_NDS32_17_PCREL_RELA, laddr);
9886 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
9891 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
9894 nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9895 Elf_Internal_Rela *internal_relocs, int *insn_len,
9896 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9897 Elf_Internal_Shdr *symtab_hdr)
9899 /* The pattern for LONGCALL6.
9900 bltz rt, .L1 ; LONGCALL6/17_PCREL
9901 sethi ta, hi20(symbol) ; HI20/PTR
9902 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9903 jral ta ; PTR_RES/EMPTY/INSN16
9908 Elf_Internal_Rela *em_irel, *cond_irel, *irelend;
9909 int pic_ext_target = 0;
9910 bfd_signed_vma foff;
9912 irelend = internal_relocs + sec->reloc_count;
9913 laddr = irel->r_offset;
9915 /* Get the reloc for the address from which the register is
9916 being loaded. This reloc will tell us which function is
9917 actually being called. */
9918 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9919 R_NDS32_EMPTY, irel->r_addend);
9921 if (em_irel == irelend)
9923 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL6",
9928 /* Get the value of the symbol referred to by the reloc. */
9929 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
9932 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
9933 || foff >= CONSERVATIVE_24BIT_S1)
9936 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
9937 insn = bfd_getb32 (contents + irel->r_addend);
9938 if (insn & 0x80000000)
9941 insn = bfd_getb32 (contents + laddr);
9942 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9944 /* Relax to bgezal rt, label ; 17_PCREL
9945 or bltzal rt, label ; 17_PCREL */
9947 /* Convert to complimentary conditional call. */
9949 insn = CONVERT_CONDITION_CALL (insn);
9950 bfd_putb32 (insn, contents + em_irel->r_offset);
9953 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA);
9955 /* Set resolved relocation. */
9957 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9958 R_NDS32_PTR_RESOLVED, irel->r_addend);
9959 if (cond_irel == irelend)
9961 _bfd_error_handler (unrecognized_reloc_msg, abfd,
9962 "R_NDS32_LONGCALL6", irel->r_offset);
9965 cond_irel->r_addend = 1;
9967 /* Clear relocations. */
9970 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9973 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9974 R_NDS32_17_PCREL_RELA, laddr);
9975 if (cond_irel != irelend)
9977 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
9980 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9981 R_NDS32_INSN16, irel->r_addend);
9982 if (cond_irel != irelend)
9984 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
9987 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9989 /* Relax to the following instruction sequence
9990 bltz rt, .L1 ; LONGCALL2/17_PCREL
9991 jal symbol ; 25_PCREL/PTR_RES
9994 /* Convert instruction. */
9996 bfd_putb32 (insn, contents + em_irel->r_offset);
9998 /* Convert relocations. */
9999 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10000 R_NDS32_25_PCREL_RELA);
10002 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5);
10004 /* Set resolved relocation. */
10006 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10007 R_NDS32_PTR_RESOLVED, irel->r_addend);
10008 if (cond_irel == irelend)
10010 _bfd_error_handler (unrecognized_reloc_msg, abfd,
10011 "R_NDS32_LONGCALL6", irel->r_offset);
10014 cond_irel->r_addend = 1;
10017 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10018 R_NDS32_INSN16, irel->r_addend);
10019 if (cond_irel != irelend)
10020 cond_irel->r_info =
10021 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10026 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10029 nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10030 Elf_Internal_Rela *internal_relocs, int *insn_len,
10031 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10032 Elf_Internal_Shdr *symtab_hdr)
10034 /* The pattern for LONGJUMP4.
10035 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10036 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10037 jr ta ; PTR_RES/INSN16/EMPTY */
10040 int seq_len; /* Original length of instruction sequence. */
10042 Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend;
10043 int pic_ext_target = 0;
10044 bfd_signed_vma foff;
10046 irelend = internal_relocs + sec->reloc_count;
10047 seq_len = GET_SEQ_LEN (irel->r_addend);
10048 laddr = irel->r_offset;
10049 *insn_len = seq_len;
10051 /* Get the reloc for the address from which the register is
10052 being loaded. This reloc will tell us which function is
10053 actually being called. */
10055 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10056 R_NDS32_HI20_RELA, laddr);
10058 if (hi_irel == irelend)
10060 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4",
10065 /* Get the value of the symbol referred to by the reloc. */
10066 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr,
10069 if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1
10070 || foff < -CONSERVATIVE_24BIT_S1)
10073 /* Convert it to "j label", it may be converted to j8 in the final
10074 pass of relaxation. Therefore, we do not consider this currently. */
10075 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10076 R_NDS32_PTR_RESOLVED, irel->r_addend);
10077 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10078 R_NDS32_EMPTY, irel->r_addend);
10080 if (ptr_irel == irelend || em_irel == irelend)
10082 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4",
10088 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA);
10089 ptr_irel->r_addend = 1;
10091 /* Write instruction. */
10093 bfd_putb32 (insn, contents + em_irel->r_offset);
10095 /* Clear relocations. */
10096 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10098 /* If there is function cse, HI20 can not remove now. */
10099 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10100 R_NDS32_LONGJUMP4, laddr);
10101 if (call_irel == irelend)
10105 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10111 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10114 nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10115 Elf_Internal_Rela *internal_relocs, int *insn_len,
10116 int *seq_len, bfd_byte *contents,
10117 Elf_Internal_Sym *isymbuf,
10118 Elf_Internal_Shdr *symtab_hdr)
10120 /* There are 2 variations for LONGJUMP5
10121 case 2-4; 1st insn convertible, 16-bit on.
10122 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10123 j label ; 25_PCREL/INSN16
10126 case 4-4; 1st insn not convertible
10127 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10128 j label ; 25_PCREL/INSN16
10132 Elf_Internal_Rela *cond_irel, *irelend;
10133 int pic_ext_target = 0;
10135 bfd_signed_vma foff;
10136 uint32_t insn, re_insn = 0;
10137 uint16_t insn16, re_insn16 = 0;
10138 unsigned long reloc;
10140 enum elf_nds32_reloc_type checked_types[] =
10141 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10142 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10144 irelend = internal_relocs + sec->reloc_count;
10145 laddr = irel->r_offset;
10147 /* Get the reloc for the address from which the register is
10148 being loaded. This reloc will tell us which function is
10149 actually being called. */
10152 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10153 R_NDS32_25_PCREL_RELA, irel->r_addend);
10154 if (cond_irel == irelend)
10156 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP5",
10161 /* Get the value of the symbol referred to by the reloc. */
10162 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10165 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1
10166 || foff >= CONSERVATIVE_16BIT_S1)
10169 /* Get the all corresponding instructions. */
10170 insn = bfd_getb32 (contents + laddr);
10171 /* Check instruction size. */
10172 if (insn & 0x80000000)
10175 insn16 = insn >> 16;
10176 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10179 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10181 if (N32_OP6 (re_insn) == N32_OP6_BR1
10182 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10184 /* beqs label ; 15_PCREL. */
10185 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10186 reloc = R_NDS32_15_PCREL_RELA;
10188 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10189 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10191 /* beqz label ; 17_PCREL. */
10192 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10193 reloc = R_NDS32_17_PCREL_RELA;
10195 else if ( N32_OP6 (re_insn) == N32_OP6_BR3
10196 && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1)
10198 /* beqc label ; 9_PCREL. */
10199 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10200 reloc = R_NDS32_WORD_9_PCREL_RELA;
10205 /* Set all relocations. */
10206 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc);
10208 /* Clean relocations. */
10209 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10210 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10212 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10213 checked_types[i], laddr);
10214 if (cond_irel != irelend)
10217 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10219 /* If the branch instruction is 2 byte, it cannot remove
10220 directly. Only convert it to nop16 and remove it after
10221 checking alignment issue. */
10222 insn16 = NDS32_NOP16;
10223 bfd_putb16 (insn16, contents + laddr);
10224 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10227 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10236 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
10239 nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10240 Elf_Internal_Rela *internal_relocs, int *insn_len,
10241 int *seq_len, bfd_byte *contents,
10242 Elf_Internal_Sym *isymbuf,
10243 Elf_Internal_Shdr *symtab_hdr)
10245 /* There are 5 variations for LONGJUMP6
10246 case : 2-4-4-4; 1st insn convertible, 16-bit on.
10247 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10248 sethi ta, hi20(symbol) ; HI20/PTR
10249 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10250 jr ta ; PTR_RES/INSN16/EMPTY
10253 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
10254 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10255 sethi ta, hi20(symbol) ; HI20/PTR
10256 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10257 jr ta ; PTR_RES/INSN16/EMPTY
10260 enum elf_nds32_reloc_type checked_types[] =
10261 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10262 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10264 int reloc_off = 0, cond_removed = 0;
10266 Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel;
10267 int pic_ext_target = 0;
10269 bfd_signed_vma foff;
10270 uint32_t insn, re_insn = 0;
10271 uint16_t insn16, re_insn16 = 0;
10272 unsigned long reloc;
10274 irelend = internal_relocs + sec->reloc_count;
10275 laddr = irel->r_offset;
10277 /* Get the reloc for the address from which the register is
10278 being loaded. This reloc will tell us which function is
10279 actually being called. */
10280 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10281 R_NDS32_EMPTY, irel->r_addend);
10283 if (em_irel == irelend)
10285 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP6",
10290 /* Get the value of the symbol referred to by the reloc. */
10291 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr,
10294 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1
10295 || foff >= CONSERVATIVE_24BIT_S1)
10298 insn = bfd_getb32 (contents + laddr);
10299 /* Check instruction size. */
10300 if (insn & 0x80000000)
10303 insn16 = insn >> 16;
10304 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10307 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10309 /* For simplicity of coding, we are going to modify the section
10310 contents, the section relocs, and the BFD symbol table. We
10311 must tell the rest of the code not to free up this
10312 information. It would be possible to instead create a table
10313 of changes which have to be made, as is done in coff-mips.c;
10314 that would be more work, but would require less memory when
10315 the linker is run. */
10317 if (N32_OP6 (re_insn) == N32_OP6_BR1
10318 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10320 /* beqs label ; 15_PCREL */
10321 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10322 reloc = R_NDS32_15_PCREL_RELA;
10325 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10326 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10328 /* beqz label ; 17_PCREL */
10329 bfd_putb32 (re_insn, contents + em_irel->r_offset);
10330 reloc = R_NDS32_17_PCREL_RELA;
10333 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
10334 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
10336 /* Relax to one of the following 2 variations
10338 case 2-4; 1st insn convertible, 16-bit on.
10339 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10340 j label ; 25_PCREL/INSN16
10343 case 4-4; 1st insn not convertible
10344 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10345 j label ; 25_PCREL/INSN16
10348 /* Use j label as second instruction. */
10350 reloc = R_NDS32_25_PCREL_RELA;
10351 bfd_putb32 (insn, contents + em_irel->r_offset);
10356 /* Set all relocations. */
10357 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc);
10360 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10361 R_NDS32_PTR_RESOLVED, em_irel->r_offset);
10362 cond_irel->r_addend = 1;
10364 /* Use INSN16 of first branch instruction to distinguish if keeping
10365 INSN16 of final instruction or not. */
10366 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10367 R_NDS32_INSN16, irel->r_offset);
10368 if (insn_irel == irelend)
10370 /* Clean the final INSN16. */
10372 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10373 R_NDS32_INSN16, em_irel->r_offset);
10374 insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10378 if (cond_removed == 1)
10382 /* Clear relocations. */
10383 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10385 for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++)
10388 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10389 checked_types[i], laddr);
10390 if (cond_irel != irelend)
10393 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10395 /* If the branch instruction is 2 byte, it cannot remove
10396 directly. Only convert it to nop16 and remove it after
10397 checking alignment issue. */
10398 insn16 = NDS32_NOP16;
10399 bfd_putb16 (insn16, contents + laddr);
10400 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10403 cond_irel->r_info =
10404 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10410 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
10411 R_NDS32_LONGJUMP5);
10417 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
10420 nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10421 Elf_Internal_Rela *internal_relocs, int *insn_len,
10422 int *seq_len, bfd_byte *contents,
10423 Elf_Internal_Sym *isymbuf,
10424 Elf_Internal_Shdr *symtab_hdr)
10426 /* There are 2 variations for LONGJUMP5
10427 case 2-4; 1st insn convertible, 16-bit on.
10428 movi55 ta, imm11 ; LONGJUMP7/INSN16
10429 beq rt, ta, label ; 15_PCREL
10431 case 4-4; 1st insn not convertible
10432 movi55 ta, imm11 ; LONGJUMP7/INSN16
10433 beq rt, ta, label ; 15_PCREL */
10436 Elf_Internal_Rela *cond_irel, *irelend, *insn_irel;
10437 int pic_ext_target = 0;
10438 bfd_signed_vma foff;
10439 uint32_t insn, re_insn = 0;
10443 irelend = internal_relocs + sec->reloc_count;
10444 laddr = irel->r_offset;
10446 /* Get the reloc for the address from which the register is
10447 being loaded. This reloc will tell us which function is
10448 actually being called. */
10451 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10452 R_NDS32_15_PCREL_RELA, irel->r_addend);
10453 if (cond_irel == irelend)
10455 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP7",
10460 /* Get the value of the symbol referred to by the reloc. */
10461 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr,
10464 if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1
10465 || foff >= CONSERVATIVE_8BIT_S1)
10468 /* Get the first instruction for its size. */
10469 insn = bfd_getb32 (contents + laddr);
10470 if (insn & 0x80000000)
10473 /* Get the immediate from movi55. */
10474 imm11 = N16_IMM5S (insn >> 16);
10478 /* Get the immediate from movi. */
10479 imm11 = N32_IMM20S (insn);
10482 /* Get the branch instruction. */
10483 insn = bfd_getb32 (contents + irel->r_addend);
10484 /* Convert instruction to BR3. */
10485 if ((insn >> 14) & 0x1)
10486 re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0);
10488 re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0);
10490 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10492 /* Set all relocations. */
10493 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10494 R_NDS32_WORD_9_PCREL_RELA);
10496 /* Clean relocations. */
10497 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10498 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10499 R_NDS32_INSN16, irel->r_offset);
10500 if (insn_irel != irelend)
10504 /* If the first insntruction is 16bit, convert it to nop16. */
10505 insn16 = NDS32_NOP16;
10506 bfd_putb16 (insn16, contents + laddr);
10507 insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10510 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
10518 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
10520 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
10523 nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd,
10524 asection *sec, Elf_Internal_Rela *irel,
10525 Elf_Internal_Rela *internal_relocs, int *insn_len,
10526 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10527 Elf_Internal_Shdr *symtab_hdr, int load_store_relax)
10529 int eliminate_sethi = 0, range_type;
10531 bfd_vma local_sda, laddr;
10532 int seq_len; /* Original length of instruction sequence. */
10534 Elf_Internal_Rela *hi_irelfn = NULL, *irelend;
10535 bfd_vma access_addr = 0;
10536 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10537 enum elf_nds32_reloc_type checked_types[] =
10538 { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20,
10539 R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20,
10540 R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20,
10541 R_NDS32_TLS_LE_HI20
10544 irelend = internal_relocs + sec->reloc_count;
10545 seq_len = GET_SEQ_LEN (irel->r_addend);
10546 laddr = irel->r_offset;
10547 *insn_len = seq_len;
10549 /* Get the high part relocation. */
10550 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10552 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10553 checked_types[i], laddr);
10554 if (hi_irelfn != irelend)
10558 if (hi_irelfn == irelend)
10560 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LOADSTORE",
10565 range_type = GET_LOADSTORE_RANGE (irel->r_addend);
10566 nds32_elf_final_sda_base (sec->output_section->owner,
10567 link_info, &local_sda, FALSE);
10569 switch (ELF32_R_TYPE (hi_irelfn->r_info))
10571 case R_NDS32_HI20_RELA:
10572 insn = bfd_getb32 (contents + laddr);
10574 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10576 if (range_type == NDS32_LOADSTORE_IMM)
10578 struct elf_link_hash_entry *h = NULL;
10581 if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info)
10583 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
10584 h = elf_sym_hashes (abfd)[indx];
10587 if ((access_addr < CONSERVATIVE_20BIT)
10588 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10590 eliminate_sethi = 1;
10594 /* This is avoid to relax symbol address which is fixed
10595 relocations. Ex: _stack. */
10596 if (h && bfd_is_abs_section (h->root.u.def.section))
10600 if (!load_store_relax)
10603 /* Case for set gp register. */
10604 if (N32_RT5 (insn) == REG_GP)
10607 if (range_type == NDS32_LOADSTORE_FLOAT_S
10608 || range_type == NDS32_LOADSTORE_FLOAT_D)
10610 range_l = sdata_range[0][0];
10611 range_h = sdata_range[0][1];
10615 range_l = sdata_range[1][0];
10616 range_h = sdata_range[1][1];
10620 case R_NDS32_GOT_HI20:
10622 calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr);
10624 /* If this symbol is not in .got, the return value will be -1.
10625 Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE,
10626 a negative offset is allowed. */
10627 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10628 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10629 eliminate_sethi = 1;
10632 case R_NDS32_PLT_GOTREL_HI20:
10633 access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf,
10634 hi_irelfn, symtab_hdr);
10636 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10637 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10638 eliminate_sethi = 1;
10641 case R_NDS32_GOTOFF_HI20:
10643 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10645 if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT
10646 && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT)
10647 eliminate_sethi = 1;
10650 case R_NDS32_GOTPC_HI20:
10651 /* The access_addr must consider r_addend of hi_irel. */
10652 access_addr = sec->output_section->vma + sec->output_offset
10653 + irel->r_offset + hi_irelfn->r_addend;
10655 if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT
10656 && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT)
10657 eliminate_sethi = 1;
10660 case R_NDS32_TLS_LE_HI20:
10662 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
10663 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10664 access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10665 if ((range_type == NDS32_LOADSTORE_IMM)
10666 && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT
10667 && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT)
10668 eliminate_sethi = 1;
10675 /* Delete sethi instruction. */
10676 if (eliminate_sethi == 1
10677 || (local_sda <= access_addr && (access_addr - local_sda) < range_h)
10678 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
10680 hi_irelfn->r_info =
10681 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
10683 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10689 /* Relax LO12 relocation for nds32_elf_relax_section. */
10692 nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd,
10693 asection *sec, Elf_Internal_Rela *irel,
10694 Elf_Internal_Rela *internal_relocs, bfd_byte *contents,
10695 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
10698 bfd_vma local_sda, laddr;
10699 unsigned long reloc;
10700 bfd_vma access_addr;
10701 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
10702 Elf_Internal_Rela *irelfn = NULL, *irelend;
10703 struct elf_link_hash_entry *h = NULL;
10706 /* For SDA base relative relaxation. */
10707 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
10708 &local_sda, FALSE);
10710 irelend = internal_relocs + sec->reloc_count;
10711 laddr = irel->r_offset;
10712 insn = bfd_getb32 (contents + laddr);
10714 if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI)
10717 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10719 if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
10721 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
10722 h = elf_sym_hashes (abfd)[indx];
10725 if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT
10726 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
10728 reloc = R_NDS32_20_RELA;
10729 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10730 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10731 bfd_putb32 (insn, contents + laddr);
10733 /* This is avoid to relax symbol address which is fixed
10734 relocations. Ex: _stack. */
10735 else if (N32_OP6 (insn) == N32_OP6_ORI
10736 && h && bfd_is_abs_section (h->root.u.def.section))
10740 range_l = sdata_range[1][0];
10741 range_h = sdata_range[1][1];
10742 switch (ELF32_R_TYPE (irel->r_info))
10744 case R_NDS32_LO12S0_RELA:
10745 reloc = R_NDS32_SDA19S0_RELA;
10747 case R_NDS32_LO12S1_RELA:
10748 reloc = R_NDS32_SDA18S1_RELA;
10750 case R_NDS32_LO12S2_RELA:
10751 reloc = R_NDS32_SDA17S2_RELA;
10753 case R_NDS32_LO12S2_DP_RELA:
10754 range_l = sdata_range[0][0];
10755 range_h = sdata_range[0][1];
10756 reloc = R_NDS32_SDA12S2_DP_RELA;
10758 case R_NDS32_LO12S2_SP_RELA:
10759 range_l = sdata_range[0][0];
10760 range_h = sdata_range[0][1];
10761 reloc = R_NDS32_SDA12S2_SP_RELA;
10767 /* There are range_h and range_l because linker has to promise
10768 all sections move cross one page together. */
10769 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
10770 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
10772 if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP)
10774 /* Maybe we should add R_NDS32_INSN16 reloc type here
10775 or manually do some optimization. sethi can't be
10776 eliminated when updating $gp so the relative ori
10777 needs to be preserved. */
10780 if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info),
10783 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10784 bfd_putb32 (insn, contents + laddr);
10786 irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
10788 /* SDA17 must keep INSN16 for converting fp_as_gp. */
10789 if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA)
10791 ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE);
10798 /* Relax low part of PIC instruction pattern. */
10801 nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd,
10802 asection *sec, Elf_Internal_Rela *irel,
10803 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10804 Elf_Internal_Shdr *symtab_hdr)
10807 bfd_vma local_sda, laddr;
10808 bfd_signed_vma foff;
10809 unsigned long reloc;
10811 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
10812 &local_sda, FALSE);
10813 laddr = irel->r_offset;
10814 insn = bfd_getb32 (contents + laddr);
10816 if (N32_OP6 (insn) != N32_OP6_ORI)
10819 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12)
10821 foff = calculate_got_memory_address (abfd, link_info, irel,
10822 symtab_hdr) - local_sda;
10823 reloc = R_NDS32_GOT20;
10825 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12)
10827 foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel,
10828 symtab_hdr) - local_sda;
10829 reloc = R_NDS32_PLT_GOTREL_LO20;
10831 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12)
10833 foff = calculate_memory_address (abfd, irel, isymbuf,
10834 symtab_hdr) - local_sda;
10835 reloc = R_NDS32_GOTOFF;
10837 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12)
10839 foff = local_sda - sec->output_section->vma + sec->output_offset
10840 + irel->r_offset + irel->r_addend;
10841 reloc = R_NDS32_GOTPC20;
10846 if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT))
10848 /* Turn into MOVI. */
10849 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10850 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10851 bfd_putb32 (insn, contents + laddr);
10855 /* Relax low part of LE TLS instruction pattern. */
10858 nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd,
10859 Elf_Internal_Rela *irel,
10860 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10861 Elf_Internal_Shdr *symtab_hdr)
10865 bfd_signed_vma foff;
10866 unsigned long reloc;
10868 laddr = irel->r_offset;
10869 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10870 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10871 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10872 insn = bfd_getb32 (contents + laddr);
10874 if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT
10875 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT)
10877 /* Pattern sethi-ori transform to movi. */
10878 reloc = R_NDS32_TLS_LE_20;
10879 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10880 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
10881 bfd_putb32 (insn, contents + laddr);
10885 /* Relax LE TLS calculate address instruction pattern. */
10888 nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd,
10889 asection *sec, Elf_Internal_Rela *irel,
10890 Elf_Internal_Rela *internal_relocs,
10891 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10892 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
10894 /* Local TLS non-pic
10895 sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20
10896 ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12
10897 add ra, ta, tp ; TLS_LE_ADD */
10901 bfd_signed_vma foff;
10902 Elf_Internal_Rela *i1_irelfn, *irelend;
10904 irelend = internal_relocs + sec->reloc_count;
10905 laddr = irel->r_offset;
10906 insn = bfd_getb32 (contents + laddr);
10907 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
10908 R_NDS32_PTR_RESOLVED);
10909 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10910 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10911 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10913 /* The range is +/-16k. */
10914 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
10915 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
10917 /* Transform add to addi. */
10918 insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0);
10920 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
10922 bfd_putb32 (insn, contents + laddr);
10923 if (i1_irelfn != irelend)
10925 i1_irelfn->r_addend |= 1;
10931 /* Relax LE TLS load store instruction pattern. */
10934 nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd,
10935 asection *sec, Elf_Internal_Rela *irel,
10936 Elf_Internal_Rela *internal_relocs,
10937 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10938 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
10943 bfd_signed_vma foff;
10944 Elf_Internal_Rela *i1_irelfn, *irelend;
10947 irelend = internal_relocs + sec->reloc_count;
10948 laddr = irel->r_offset;
10949 insn = bfd_getb32 (contents + laddr);
10950 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
10951 R_NDS32_PTR_RESOLVED);
10952 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
10953 BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL);
10954 foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET);
10956 switch ((N32_OP6 (insn) << 8) | (insn & 0xff))
10958 case (N32_OP6_MEM << 8) | N32_MEM_LB:
10959 case (N32_OP6_MEM << 8) | N32_MEM_SB:
10960 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
10961 /* The range is +/-16k. */
10962 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT
10963 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT)
10966 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
10968 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0);
10972 /* Fall through. */
10973 case (N32_OP6_MEM << 8) | N32_MEM_LH:
10974 case (N32_OP6_MEM << 8) | N32_MEM_SH:
10975 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
10976 /* The range is +/-32k. */
10977 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1
10978 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1)
10981 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
10983 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1);
10987 /* Fall through. */
10988 case (N32_OP6_MEM << 8) | N32_MEM_LW:
10989 case (N32_OP6_MEM << 8) | N32_MEM_SW:
10990 /* The range is +/-64k. */
10991 if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2
10992 && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2)
10995 ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5);
10997 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2);
11001 /* Fall through. */
11008 bfd_putb32 (insn, contents + laddr);
11009 if (i1_irelfn != irelend)
11011 i1_irelfn->r_addend |= 1;
11017 /* Relax PTR relocation for nds32_elf_relax_section. */
11020 nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11021 Elf_Internal_Rela *internal_relocs, int *insn_len,
11022 int *seq_len, bfd_byte *contents)
11024 Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel;
11026 irelend = internal_relocs + sec->reloc_count;
11029 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11030 R_NDS32_PTR_RESOLVED, irel->r_addend);
11032 if (re_irel == irelend)
11034 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_PTR",
11039 if (re_irel->r_addend != 1)
11042 /* Pointed target is relaxed and no longer needs this void *,
11043 change the type to NONE. */
11044 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11046 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11047 not exist, it means only count 1 and remove it directly. */
11048 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11049 count_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11050 R_NDS32_PTR_COUNT);
11051 ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11053 if (count_irel != irelend)
11055 if (--count_irel->r_addend > 0)
11059 if (ptr_irel != irelend)
11062 /* If the PTR_COUNT is already 0, remove current instruction. */
11063 *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset);
11068 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11071 nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd,
11072 asection *sec, Elf_Internal_Rela *irel,
11073 Elf_Internal_Rela *internal_relocs,
11074 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11075 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11078 bfd_signed_vma foff;
11079 Elf_Internal_Rela *i1_irelfn, *irelend;
11080 bfd_vma local_sda, laddr;
11082 irelend = internal_relocs + sec->reloc_count;
11083 laddr = irel->r_offset;
11084 insn = bfd_getb32 (contents + laddr);
11086 /* FIXME: It's a little trouble to turn JRAL5 to JAL since
11087 we need additional space. It might be help if we could
11088 borrow some space from instructions to be eliminated
11089 such as sethi, ori, add. */
11090 if (insn & 0x80000000)
11093 if (nds32_elf_check_dup_relocs
11094 (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF))
11098 find_relocs_at_address (irel, internal_relocs, irelend,
11099 R_NDS32_PTR_RESOLVED);
11102 The boundary should be reduced since the .plt section hasn't
11103 been created and the address of specific entry is still unknown
11104 Maybe the range between the function call and the begin of the
11105 .text section can be used to decide if the .plt is in the range
11106 of function call. */
11108 if (N32_OP6 (insn) == N32_OP6_ALU1
11109 && N32_SUB5 (insn) == N32_ALU1_ADD)
11111 /* Get the value of the symbol referred to by the reloc. */
11112 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11113 &local_sda, FALSE);
11114 foff = (bfd_signed_vma) (calculate_plt_memory_address
11115 (abfd, link_info, isymbuf, irel,
11116 symtab_hdr) - local_sda);
11117 /* This condition only happened when symbol is undefined. */
11121 if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT)
11123 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11124 R_NDS32_PLT_GOTREL_LO19);
11126 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19));
11128 else if (N32_OP6 (insn) == N32_OP6_JREG
11129 && N32_SUB5 (insn) == N32_JREG_JRAL)
11131 /* Get the value of the symbol referred to by the reloc. */
11133 calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr);
11134 /* This condition only happened when symbol is undefined. */
11137 if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1)
11139 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL);
11145 bfd_putb32 (insn, contents + laddr);
11146 if (i1_irelfn != irelend)
11148 i1_irelfn->r_addend |= 1;
11153 /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */
11156 nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd,
11157 asection *sec, Elf_Internal_Rela *irel,
11158 Elf_Internal_Rela *internal_relocs,
11159 bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr,
11160 bfd_boolean *again)
11163 bfd_signed_vma foff;
11164 Elf_Internal_Rela *i1_irelfn, *irelend;
11165 bfd_vma local_sda, laddr;
11167 irelend = internal_relocs + sec->reloc_count;
11168 laddr = irel->r_offset;
11169 insn = bfd_getb32 (contents + laddr);
11170 if (insn & 0x80000000)
11173 if (nds32_elf_check_dup_relocs
11174 (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF))
11177 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11178 R_NDS32_PTR_RESOLVED);
11180 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11181 &local_sda, FALSE);
11182 foff = calculate_got_memory_address (abfd, link_info, irel,
11183 symtab_hdr) - local_sda;
11185 if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT)
11187 /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */
11188 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11190 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA);
11191 bfd_putb32 (insn, contents + laddr);
11192 if (i1_irelfn != irelend)
11194 i1_irelfn->r_addend |= 1;
11200 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11203 nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd,
11204 asection *sec, Elf_Internal_Rela *irel,
11205 Elf_Internal_Rela *internal_relocs,
11206 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11207 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11209 int opc_insn_gotoff;
11211 bfd_signed_vma foff;
11212 Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend;
11213 bfd_vma local_sda, laddr;
11215 irelend = internal_relocs + sec->reloc_count;
11216 laddr = irel->r_offset;
11217 insn = bfd_getb32 (contents + laddr);
11219 if (insn & 0x80000000)
11222 if (nds32_elf_check_dup_relocs
11223 (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF))
11226 i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11227 R_NDS32_PTR_RESOLVED);
11228 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11229 &local_sda, FALSE);
11230 foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11231 foff = foff - local_sda;
11233 if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT)
11236 /* Concatenate opcode and sub-opcode for switch case.
11237 It may be MEM or ALU1. */
11238 opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff);
11239 switch (opc_insn_gotoff)
11241 case (N32_OP6_MEM << 8) | N32_MEM_LW:
11242 /* 4-byte aligned. */
11243 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
11245 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11247 case (N32_OP6_MEM << 8) | N32_MEM_SW:
11248 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
11250 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA);
11252 case (N32_OP6_MEM << 8) | N32_MEM_LH:
11253 /* 2-byte aligned. */
11254 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
11256 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11258 case (N32_OP6_MEM << 8) | N32_MEM_LHS:
11259 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (18));
11261 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11263 case (N32_OP6_MEM << 8) | N32_MEM_SH:
11264 insn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (19));
11266 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA);
11268 case (N32_OP6_MEM << 8) | N32_MEM_LB:
11269 /* 1-byte aligned. */
11270 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
11272 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11274 case (N32_OP6_MEM << 8) | N32_MEM_LBS:
11275 insn = N32_TYPE1 (LBGP, N32_RT5 (insn), N32_BIT (19));
11277 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11279 case (N32_OP6_MEM << 8) | N32_MEM_SB:
11280 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
11282 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11284 case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD:
11285 insn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19));
11287 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA);
11293 bfd_putb32 (insn, contents + laddr);
11294 if (i1_irelfn != irelend)
11296 i1_irelfn->r_addend |= 1;
11299 if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11300 R_NDS32_INSN16)) != irelend)
11301 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11306 nds32_relax_adjust_label (bfd *abfd, asection *sec,
11307 Elf_Internal_Rela *internal_relocs,
11308 bfd_byte *contents,
11309 nds32_elf_blank_t **relax_blank_list,
11310 int optimize, int opt_size)
11312 /* This code block is used to adjust 4-byte alignment by relax a pair
11313 of instruction a time.
11315 It recognizes three types of relocations.
11316 1. R_NDS32_LABEL - a alignment.
11317 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11318 3. is_16bit_NOP () - remove a 16-bit instruction. */
11320 /* TODO: It seems currently implementation only support 4-byte alignment.
11321 We should handle any-alignment. */
11323 Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel;
11324 Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL;
11325 Elf_Internal_Rela rel_temp;
11326 Elf_Internal_Rela *irelend;
11330 /* Checking for branch relaxation relies on the relocations to
11331 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11332 nds32_insertion_sort (internal_relocs, sec->reloc_count,
11333 sizeof (Elf_Internal_Rela), compar_reloc);
11335 irelend = internal_relocs + sec->reloc_count;
11337 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11338 /* FIXME: Can we generate the right order in assembler?
11339 So we don't have to swapping them here. */
11341 for (label_rel = internal_relocs, insn_rel = internal_relocs;
11342 label_rel < irelend; label_rel++)
11344 if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL)
11347 /* Find the first reloc has the same offset with label_rel. */
11348 while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset)
11351 for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset;
11353 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11355 if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16)
11358 if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset
11359 && insn_rel < label_rel)
11361 /* Swap the two reloc if the R_NDS32_INSN16 is
11362 before R_NDS32_LABEL. */
11363 memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela));
11364 memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela));
11365 memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela));
11371 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11372 or higher, remove other R_NDS32_LABEL with lower alignment.
11373 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11374 then the R_NDS32_LABEL sequence is broke. */
11375 for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++)
11377 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL)
11379 if (label_rel == NULL)
11381 if (tmp_rel->r_addend < 2)
11382 label_rel = tmp_rel;
11385 else if (tmp_rel->r_addend > 1)
11387 /* Remove all LABEL relocation from label_rel to tmp_rel
11388 including relocations with same offset as tmp_rel. */
11389 for (tmp2_rel = label_rel; tmp2_rel < tmp_rel
11390 || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++)
11392 if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL
11393 && tmp2_rel->r_addend < 2)
11395 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info),
11401 else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel)
11403 /* A new INSN16 which can be converted, so clear label_rel. */
11404 if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs,
11406 || is_16bit_NOP (abfd, sec, tmp_rel))
11413 /* Optimized for speed and nothing has not been relaxed.
11414 It's time to align labels.
11415 We may convert a 16-bit instruction right before a label to
11416 32-bit, in order to align the label if necessary
11417 all reloc entries has been sorted by r_offset. */
11418 for (irel = internal_relocs; irel < irelend; irel++)
11420 if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16
11421 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL)
11424 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16)
11426 /* A new INSN16 found, resize the old one. */
11427 if (is_convert_32_to_16
11428 (abfd, sec, irel, internal_relocs, irelend, &insn16)
11429 || is_16bit_NOP (abfd, sec, irel))
11433 /* Previous INSN16 reloc exists, reduce its
11435 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11438 nds32_elf_write_16 (abfd, contents, insn_rel,
11439 internal_relocs, irelend, insn16);
11441 if (!insert_nds32_elf_blank_recalc_total
11442 (relax_blank_list, insn_rel->r_offset + 2, 2))
11445 else if (is_16bit_NOP (abfd, sec, insn_rel))
11447 if (!insert_nds32_elf_blank_recalc_total
11448 (relax_blank_list, insn_rel->r_offset, 2))
11452 ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE);
11454 /* Save the new one for later use. */
11458 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11461 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL)
11463 /* Search for label. */
11464 int force_relax = 0;
11466 /* Label on 16-bit instruction or optimization
11467 needless, just reset this reloc. */
11468 insn16 = bfd_getb16 (contents + irel->r_offset);
11469 if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000)))
11472 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11477 irel->r_offset - get_nds32_elf_blank_total (relax_blank_list,
11478 irel->r_offset, 1);
11482 /* Check if there is case which can not be aligned. */
11483 if (irel->r_addend == 2 && address & 0x2)
11488 /* Try to align this label. */
11490 if ((irel->r_addend & 0x1f) < 2)
11492 /* Check if there is a INSN16 at the same address.
11493 Label_rel always seats before insn_rel after
11496 /* Search for INSN16 at LABEL location. If INSN16 is at
11497 same location and this LABEL alignment is lower than 2,
11498 the INSN16 can be converted to 2-byte. */
11499 for (tmp_rel = irel;
11500 tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset;
11503 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16
11504 && (is_convert_32_to_16
11505 (abfd, sec, tmp_rel, internal_relocs,
11507 || is_16bit_NOP (abfd, sec, tmp_rel)))
11515 if (force_relax || irel->r_addend == 1 || address & 0x2)
11517 /* Label not aligned. */
11518 /* Previous reloc exists, reduce its size to 16-bit. */
11519 if (is_convert_32_to_16 (abfd, sec, insn_rel,
11520 internal_relocs, irelend, &insn16))
11522 nds32_elf_write_16 (abfd, contents, insn_rel,
11523 internal_relocs, irelend, insn16);
11525 if (!insert_nds32_elf_blank_recalc_total
11526 (relax_blank_list, insn_rel->r_offset + 2, 2))
11529 else if (is_16bit_NOP (abfd, sec, insn_rel))
11531 if (!insert_nds32_elf_blank_recalc_total
11532 (relax_blank_list, insn_rel->r_offset, 2))
11537 /* INSN16 reloc is used. */
11543 sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0);
11544 if (insn_rel && (address & 0x2 || opt_size))
11546 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11549 nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs,
11551 if (!insert_nds32_elf_blank_recalc_total
11552 (relax_blank_list, insn_rel->r_offset + 2, 2))
11554 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11557 else if (is_16bit_NOP (abfd, sec, insn_rel))
11559 if (!insert_nds32_elf_blank_recalc_total
11560 (relax_blank_list, insn_rel->r_offset, 2))
11562 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
11570 /* Pick relaxation round. */
11573 nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again,
11574 struct elf_nds32_link_hash_table *table,
11575 struct bfd_link_info *link_info)
11577 static asection *final_sec, *first_sec = NULL;
11578 static bfd_boolean normal_again = FALSE;
11579 static bfd_boolean set = FALSE;
11580 static bfd_boolean first = TRUE;
11581 int round_table[] = {
11582 NDS32_RELAX_NORMAL_ROUND,
11583 NDS32_RELAX_JUMP_IFC_ROUND,
11584 NDS32_RELAX_EX9_BUILD_ROUND,
11585 NDS32_RELAX_EX9_REPLACE_ROUND,
11587 static int pass = 0;
11588 static int relax_round;
11590 /* The new round. */
11591 if (init && first_sec == sec)
11594 normal_again = FALSE;
11599 /* Run an empty run to get the final section. */
11600 relax_round = NDS32_RELAX_EMPTY_ROUND;
11602 /* It has to enter relax again because we can
11603 not make sure what the final turn is. */
11612 /* Not reenter yet. */
11614 return relax_round;
11617 relax_round = round_table[pass];
11619 if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again)
11620 normal_again = TRUE;
11622 if (!init && final_sec == sec)
11624 switch (relax_round)
11626 case NDS32_RELAX_NORMAL_ROUND:
11629 /* Normal relaxation done. */
11630 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11635 else if (table->target_optimize & NDS32_RELAX_EX9_ON)
11637 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11640 else if (table->ex9_import_file)
11642 /* Import ex9 table. */
11643 if (table->update_ex9_table)
11644 pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11646 pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */
11647 nds32_elf_ex9_import_table (link_info);
11652 case NDS32_RELAX_JUMP_IFC_ROUND:
11653 if (!nds32_elf_ifc_finish (link_info))
11654 _bfd_error_handler (_("error: Jump IFC Fail."));
11655 if (table->target_optimize & NDS32_RELAX_EX9_ON)
11661 case NDS32_RELAX_EX9_BUILD_ROUND:
11662 nds32_elf_ex9_finish (link_info);
11666 case NDS32_RELAX_EX9_REPLACE_ROUND:
11667 if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON)
11669 /* Do jump IFC optimization again. */
11670 if (!nds32_elf_ifc_finish (link_info))
11671 _bfd_error_handler (_("error: Jump IFC Fail."));
11679 return relax_round;
11683 nds32_elf_relax_section (bfd *abfd, asection *sec,
11684 struct bfd_link_info *link_info, bfd_boolean *again)
11686 nds32_elf_blank_t *relax_blank_list = NULL;
11687 Elf_Internal_Shdr *symtab_hdr;
11688 Elf_Internal_Rela *internal_relocs;
11689 Elf_Internal_Rela *irel;
11690 Elf_Internal_Rela *irelend;
11691 Elf_Internal_Sym *isymbuf = NULL;
11692 bfd_byte *contents = NULL;
11693 bfd_boolean result = TRUE;
11699 /* Target dependnet option. */
11700 struct elf_nds32_link_hash_table *table;
11701 int load_store_relax;
11704 relax_blank_list = NULL;
11708 /* Nothing to do for
11709 * relocatable link or
11710 * non-relocatable section or
11711 * non-code section or
11713 * no reloc entry. */
11714 if (bfd_link_relocatable (link_info)
11715 || (sec->flags & SEC_RELOC) == 0
11716 || (sec->flags & SEC_EXCLUDE) != 0
11717 || (sec->flags & SEC_CODE) == 0
11721 /* 09.12.11 Workaround. */
11722 /* We have to adjust align for R_NDS32_LABEL if needed.
11723 The adjust approach only can fix 2-byte align once. */
11724 if (sec->alignment_power > 2)
11727 /* The optimization type to do. */
11729 table = nds32_elf_hash_table (link_info);
11730 relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info);
11731 switch (relax_round)
11733 case NDS32_RELAX_JUMP_IFC_ROUND:
11734 /* Here is the entrance of ifc jump relaxation. */
11735 if (!nds32_elf_ifc_calc (link_info, abfd, sec))
11737 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
11740 case NDS32_RELAX_EX9_BUILD_ROUND:
11741 /* Here is the entrance of ex9 relaxation. There are two pass of
11742 ex9 relaxation. The one is to traverse all instructions and build
11743 the hash table. The other one is to compare instructions and replace
11745 if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info))
11747 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
11750 case NDS32_RELAX_EX9_REPLACE_ROUND:
11751 if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec))
11755 case NDS32_RELAX_EMPTY_ROUND:
11756 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
11759 case NDS32_RELAX_NORMAL_ROUND:
11761 if (sec->reloc_count == 0)
11766 /* The begining of general relaxation. */
11768 if (is_SDA_BASE_set == 0)
11771 is_SDA_BASE_set = 1;
11772 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11774 relax_range_measurement (abfd);
11777 if (is_ITB_BASE_set == 0)
11779 /* Set the _ITB_BASE_. */
11780 if (!nds32_elf_ex9_itb_base (link_info))
11782 _bfd_error_handler (_("%pB: error: Cannot set _ITB_BASE_"), abfd);
11783 bfd_set_error (bfd_error_bad_value);
11787 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
11788 /* Relocations MUST be kept in memory, because relaxation adjust them. */
11789 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
11790 TRUE /* keep_memory */);
11791 if (internal_relocs == NULL)
11794 irelend = internal_relocs + sec->reloc_count;
11795 irel = find_relocs_at_address (internal_relocs, internal_relocs,
11796 irelend, R_NDS32_RELAX_ENTRY);
11798 if (irel == irelend)
11801 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
11803 if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG)
11805 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
11809 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG)
11812 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG)
11816 load_store_relax = table->load_store_relax;
11818 /* Get symbol table and section content. */
11819 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
11820 || !nds32_get_local_syms (abfd, sec, &isymbuf))
11823 /* Do relax loop only when finalize is not done.
11824 Take care of relaxable relocs except INSN16. */
11825 for (irel = internal_relocs; irel < irelend; irel++)
11827 int seq_len; /* Original length of instruction sequence. */
11828 int insn_len = 0; /* Final length of instruction sequence. */
11829 bfd_boolean removed;
11832 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
11833 && (irel->r_addend & 0x1f) >= 2)
11836 /* Relocation Types
11837 R_NDS32_LONGCALL1 53
11838 R_NDS32_LONGCALL2 54
11839 R_NDS32_LONGCALL3 55
11840 R_NDS32_LONGJUMP1 56
11841 R_NDS32_LONGJUMP2 57
11842 R_NDS32_LONGJUMP3 58
11843 R_NDS32_LOADSTORE 59 */
11844 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1
11845 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE)
11846 seq_len = GET_SEQ_LEN (irel->r_addend);
11848 /* Relocation Types
11849 R_NDS32_LONGCALL4 107
11850 R_NDS32_LONGCALL5 108
11851 R_NDS32_LONGCALL6 109
11852 R_NDS32_LONGJUMP4 110
11853 R_NDS32_LONGJUMP5 111
11854 R_NDS32_LONGJUMP6 112
11855 R_NDS32_LONGJUMP7 113 */
11856 else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4
11857 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7)
11860 /* Relocation Types
11861 R_NDS32_LO12S0_RELA 30
11862 R_NDS32_LO12S1_RELA 29
11863 R_NDS32_LO12S2_RELA 28
11864 R_NDS32_LO12S2_SP_RELA 71
11865 R_NDS32_LO12S2_DP_RELA 70
11866 R_NDS32_GOT_LO12 46
11867 R_NDS32_GOTOFF_LO12 50
11868 R_NDS32_PLTREL_LO12 65
11869 R_NDS32_PLT_GOTREL_LO12 67
11870 R_NDS32_17IFC_PCREL_RELA 96
11871 R_NDS32_GOT_SUFF 193
11872 R_NDS32_GOTOFF_SUFF 194
11873 R_NDS32_PLT_GOT_SUFF 195
11874 R_NDS32_MULCALL_SUFF 196
11876 else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA
11877 && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA)
11878 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA
11879 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA
11880 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12
11881 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12
11882 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12
11883 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12
11884 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12
11885 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF
11886 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR)
11887 || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
11888 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12
11889 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD
11890 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS)
11895 insn_len = seq_len;
11898 switch (ELF32_R_TYPE (irel->r_info))
11900 case R_NDS32_LONGCALL1:
11901 removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs,
11902 &insn_len, contents, isymbuf,
11905 case R_NDS32_LONGCALL2:
11906 removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs,
11907 &insn_len, contents, isymbuf,
11910 case R_NDS32_LONGCALL3:
11911 removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs,
11912 &insn_len, contents, isymbuf,
11915 case R_NDS32_LONGJUMP1:
11916 removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs,
11917 &insn_len, contents, isymbuf,
11920 case R_NDS32_LONGJUMP2:
11921 removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs,
11922 &insn_len, contents, isymbuf,
11925 case R_NDS32_LONGJUMP3:
11926 removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs,
11927 &insn_len, contents, isymbuf,
11930 case R_NDS32_LONGCALL4:
11931 removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs,
11932 &insn_len, contents, isymbuf,
11935 case R_NDS32_LONGCALL5:
11936 removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs,
11937 &insn_len, contents, isymbuf,
11940 case R_NDS32_LONGCALL6:
11941 removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs,
11942 &insn_len, contents, isymbuf,
11945 case R_NDS32_LONGJUMP4:
11946 removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs,
11947 &insn_len, contents, isymbuf,
11950 case R_NDS32_LONGJUMP5:
11951 removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs,
11952 &insn_len, &seq_len, contents,
11953 isymbuf, symtab_hdr);
11955 case R_NDS32_LONGJUMP6:
11956 removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs,
11957 &insn_len, &seq_len, contents,
11958 isymbuf, symtab_hdr);
11960 case R_NDS32_LONGJUMP7:
11961 removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs,
11962 &insn_len, &seq_len, contents,
11963 isymbuf, symtab_hdr);
11965 case R_NDS32_LOADSTORE:
11966 removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel,
11967 internal_relocs, &insn_len,
11968 contents, isymbuf, symtab_hdr,
11971 case R_NDS32_LO12S0_RELA:
11972 case R_NDS32_LO12S1_RELA:
11973 case R_NDS32_LO12S2_DP_RELA:
11974 case R_NDS32_LO12S2_SP_RELA:
11975 case R_NDS32_LO12S2_RELA:
11976 /* Relax for low part. */
11977 nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs,
11978 contents, isymbuf, symtab_hdr);
11980 /* It is impossible to delete blank, so just continue. */
11982 case R_NDS32_GOT_LO12:
11983 case R_NDS32_GOTOFF_LO12:
11984 case R_NDS32_PLTREL_LO12:
11985 case R_NDS32_PLT_GOTREL_LO12:
11986 case R_NDS32_GOTPC_LO12:
11987 /* Relax for PIC gp-relative low part. */
11988 nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents,
11989 isymbuf, symtab_hdr);
11991 /* It is impossible to delete blank, so just continue. */
11993 case R_NDS32_TLS_LE_LO12:
11994 /* Relax for LE TLS low part. */
11995 nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents,
11996 isymbuf, symtab_hdr);
11998 /* It is impossible to delete blank, so just continue. */
12000 case R_NDS32_TLS_LE_ADD:
12001 nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs,
12002 contents, isymbuf, symtab_hdr, again);
12003 /* It is impossible to delete blank, so just continue. */
12005 case R_NDS32_TLS_LE_LS:
12006 nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs,
12007 contents, isymbuf, symtab_hdr, again);
12010 removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs,
12011 &insn_len, &seq_len, contents);
12013 case R_NDS32_PLT_GOT_SUFF:
12014 nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel,
12015 internal_relocs, contents,
12016 isymbuf, symtab_hdr, again);
12017 /* It is impossible to delete blank, so just continue. */
12019 case R_NDS32_GOT_SUFF:
12020 nds32_elf_relax_got_suff (link_info, abfd, sec, irel,
12021 internal_relocs, contents,
12022 symtab_hdr, again);
12023 /* It is impossible to delete blank, so just continue. */
12025 case R_NDS32_GOTOFF_SUFF:
12026 nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel,
12027 internal_relocs, contents,
12028 isymbuf, symtab_hdr, again);
12029 /* It is impossible to delete blank, so just continue. */
12035 if (removed && seq_len - insn_len > 0)
12037 if (!insert_nds32_elf_blank
12038 (&relax_blank_list, irel->r_offset + insn_len,
12039 seq_len - insn_len))
12045 calc_nds32_blank_total (relax_blank_list);
12047 if (table->relax_fp_as_gp)
12049 if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs,
12055 if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs,
12061 nds32_elf_pick_relax (FALSE, sec, again, table, link_info);
12065 if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents,
12066 &relax_blank_list, optimize, opt_size))
12070 /* It doesn't matter optimize_for_space_no_align anymore.
12071 If object file is assembled with flag '-Os',
12072 the we don't adjust jump-destination on 4-byte boundary. */
12074 if (relax_blank_list)
12076 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12077 relax_blank_list = NULL;
12082 /* Closing the section, so we don't relax it anymore. */
12083 bfd_vma sec_size_align;
12084 Elf_Internal_Rela *tmp_rel;
12086 /* Pad to alignment boundary. Only handle current section alignment. */
12087 sec_size_align = (sec->size + (~((-1U) << sec->alignment_power)))
12088 & ((-1U) << sec->alignment_power);
12089 if ((sec_size_align - sec->size) & 0x2)
12091 insn16 = NDS32_NOP16;
12092 bfd_putb16 (insn16, contents + sec->size);
12096 while (sec_size_align != sec->size)
12098 insn = NDS32_NOP32;
12099 bfd_putb32 (insn, contents + sec->size);
12103 tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs,
12104 irelend, R_NDS32_RELAX_ENTRY);
12105 if (tmp_rel != irelend)
12106 tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG;
12108 clean_nds32_elf_blank ();
12112 if (internal_relocs != NULL
12113 && elf_section_data (sec)->relocs != internal_relocs)
12114 free (internal_relocs);
12116 if (contents != NULL
12117 && elf_section_data (sec)->this_hdr.contents != contents)
12120 if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf)
12130 static struct bfd_elf_special_section const nds32_elf_special_sections[] =
12132 {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE},
12133 {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE},
12138 nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
12139 struct bfd_link_info *info,
12140 void *finfo ATTRIBUTE_UNUSED,
12141 bfd_boolean (*func) (void *, const char *,
12142 Elf_Internal_Sym *,
12144 struct elf_link_hash_entry *)
12147 FILE *sym_ld_script = NULL;
12148 struct elf_nds32_link_hash_table *table;
12150 table = nds32_elf_hash_table (info);
12151 sym_ld_script = table->sym_ld_script;
12153 if (check_start_export_sym)
12154 fprintf (sym_ld_script, "}\n");
12159 static enum elf_reloc_type_class
12160 nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
12161 const asection *rel_sec ATTRIBUTE_UNUSED,
12162 const Elf_Internal_Rela *rela)
12164 switch ((int) ELF32_R_TYPE (rela->r_info))
12166 case R_NDS32_RELATIVE:
12167 return reloc_class_relative;
12168 case R_NDS32_JMP_SLOT:
12169 return reloc_class_plt;
12171 return reloc_class_copy;
12173 return reloc_class_normal;
12177 /* Put target dependent option into info hash table. */
12179 bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info,
12180 int relax_fp_as_gp,
12181 int eliminate_gc_relocs,
12182 FILE * sym_ld_script, int load_store_relax,
12183 int target_optimize, int relax_status,
12184 int relax_round, FILE * ex9_export_file,
12185 FILE * ex9_import_file,
12186 int update_ex9_table, int ex9_limit,
12187 bfd_boolean ex9_loop_aware,
12188 bfd_boolean ifc_loop_aware)
12190 struct elf_nds32_link_hash_table *table;
12192 table = nds32_elf_hash_table (link_info);
12196 table->relax_fp_as_gp = relax_fp_as_gp;
12197 table->eliminate_gc_relocs = eliminate_gc_relocs;
12198 table->sym_ld_script = sym_ld_script;
12199 table ->load_store_relax = load_store_relax;
12200 table->target_optimize = target_optimize;
12201 table->relax_status = relax_status;
12202 table->relax_round = relax_round;
12203 table->ex9_export_file = ex9_export_file;
12204 table->ex9_import_file = ex9_import_file;
12205 table->update_ex9_table = update_ex9_table;
12206 table->ex9_limit = ex9_limit;
12207 table->ex9_loop_aware = ex9_loop_aware;
12208 table->ifc_loop_aware = ifc_loop_aware;
12211 /* These functions and data-structures are used for fp-as-gp
12214 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12215 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12216 the read-only section and read-write section. */
12217 #define FAG_WINDOW (508 - 32)
12219 /* An nds32_fag represent a gp-relative access.
12220 We find best fp-base by using a sliding window
12221 to find a base address which can cover most gp-access. */
12224 struct nds32_fag *next; /* NULL-teminated linked list. */
12225 bfd_vma addr; /* The address of this fag. */
12226 Elf_Internal_Rela **relas; /* The relocations associated with this fag.
12227 It is used for applying FP7U2_FLAG. */
12228 int count; /* How many times this address is referred.
12229 There should be exactly `count' relocations
12231 int relas_capcity; /* The buffer size of relas.
12232 We use an array instead of linked-list,
12233 and realloc is used to adjust buffer size. */
12237 nds32_fag_init (struct nds32_fag *head)
12239 memset (head, 0, sizeof (struct nds32_fag));
12243 nds32_fag_verify (struct nds32_fag *head)
12245 struct nds32_fag *iter;
12246 struct nds32_fag *prev;
12252 if (prev && prev->addr >= iter->addr)
12253 puts ("Bug in fp-as-gp insertion.");
12259 /* Insert a fag in ascending order.
12260 If a fag of the same address already exists,
12261 they are chained by relas array. */
12264 nds32_fag_insert (struct nds32_fag *head, bfd_vma addr,
12265 Elf_Internal_Rela * rel)
12267 struct nds32_fag *iter;
12268 struct nds32_fag *new_fag;
12269 const int INIT_RELAS_CAP = 4;
12272 iter->next && iter->next->addr <= addr;
12274 /* Find somewhere to insert. */ ;
12276 /* `iter' will be equal to `head' if the list is empty. */
12277 if (iter != head && iter->addr == addr)
12279 /* The address exists in the list.
12280 Insert `rel' into relocation list, relas. */
12282 /* Check whether relas is big enough. */
12283 if (iter->count >= iter->relas_capcity)
12285 iter->relas_capcity *= 2;
12286 iter->relas = bfd_realloc
12287 (iter->relas, iter->relas_capcity * sizeof (void *));
12289 iter->relas[iter->count++] = rel;
12293 /* This is a new address. Create a fag node for it. */
12294 new_fag = bfd_malloc (sizeof (struct nds32_fag));
12295 memset (new_fag, 0, sizeof (*new_fag));
12296 new_fag->addr = addr;
12297 new_fag->count = 1;
12298 new_fag->next = iter->next;
12299 new_fag->relas_capcity = INIT_RELAS_CAP;
12300 new_fag->relas = (Elf_Internal_Rela **)
12301 bfd_malloc (new_fag->relas_capcity * sizeof (void *));
12302 new_fag->relas[0] = rel;
12303 iter->next = new_fag;
12305 nds32_fag_verify (head);
12309 nds32_fag_free_list (struct nds32_fag *head)
12311 struct nds32_fag *iter;
12316 struct nds32_fag *tmp = iter;
12324 /* Find the best fp-base address.
12325 The relocation associated with that address is returned,
12326 so we can track the symbol instead of a fixed address.
12328 When relaxation, the address of an datum may change,
12329 because a text section is shrinked, so the data section
12330 moves forward. If the aligments of text and data section
12331 are different, their distance may change too.
12332 Therefore, tracking a fixed address is not appriate. */
12335 nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp)
12337 struct nds32_fag *base; /* First fag in the window. */
12338 struct nds32_fag *last; /* First fag outside the window. */
12339 int accu = 0; /* Usage accumulation. */
12340 struct nds32_fag *best; /* Best fag. */
12341 int baccu = 0; /* Best accumulation. */
12343 /* Use first fag for initial, and find the last fag in the window.
12345 In each iteration, we could simply subtract previous fag
12346 and accumulate following fags which are inside the window,
12347 untill we each the end. */
12349 if (head->next == NULL)
12355 /* Initialize base. */
12359 last && last->addr < base->addr + FAG_WINDOW;
12361 accu += last->count;
12365 /* Record the best base in each iteration. */
12368 accu -= base->count;
12370 /* Account fags in window. */
12371 for (/* Nothing. */;
12372 last && last->addr < base->addr + FAG_WINDOW;
12374 accu += last->count;
12376 /* A better fp-base? */
12389 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12390 so we can convert it fo fp-relative access later.
12391 `best_fag' is the best fp-base. Only those inside the window
12392 of best_fag is applied the flag. */
12395 nds32_fag_mark_relax (struct bfd_link_info *link_info,
12396 bfd *abfd, struct nds32_fag *best_fag,
12397 Elf_Internal_Rela *internal_relocs,
12398 Elf_Internal_Rela *irelend)
12400 struct nds32_fag *ifag;
12401 bfd_vma best_fpbase, gp;
12404 output_bfd = abfd->sections->output_section->owner;
12405 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
12406 best_fpbase = best_fag->addr;
12408 if (best_fpbase > gp + sdata_range[1][1]
12409 || best_fpbase < gp - sdata_range[1][0])
12412 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12413 so we know they can be converted to lwi37.fp. */
12414 for (ifag = best_fag;
12415 ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next)
12419 for (i = 0; i < ifag->count; i++)
12421 Elf_Internal_Rela *insn16_rel;
12422 Elf_Internal_Rela *fag_rel;
12424 fag_rel = ifag->relas[i];
12426 /* Only if this is within the WINDOWS, FP7U2_FLAG
12429 insn16_rel = find_relocs_at_address
12430 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12432 if (insn16_rel != irelend)
12433 insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG;
12439 /* Reset INSN16 to clean fp as gp. */
12442 nds32_fag_unmark_relax (struct nds32_fag *fag,
12443 Elf_Internal_Rela *internal_relocs,
12444 Elf_Internal_Rela *irelend)
12446 struct nds32_fag *ifag;
12448 Elf_Internal_Rela *insn16_rel;
12449 Elf_Internal_Rela *fag_rel;
12451 for (ifag = fag; ifag; ifag = ifag->next)
12453 for (i = 0; i < ifag->count; i++)
12455 fag_rel = ifag->relas[i];
12457 /* Restore the INSN16 relocation. */
12458 insn16_rel = find_relocs_at_address
12459 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12461 if (insn16_rel != irelend)
12462 insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG;
12467 /* This is the main function of fp-as-gp optimization.
12468 It should be called by relax_section. */
12471 nds32_relax_fp_as_gp (struct bfd_link_info *link_info,
12472 bfd *abfd, asection *sec,
12473 Elf_Internal_Rela *internal_relocs,
12474 Elf_Internal_Rela *irelend,
12475 Elf_Internal_Sym *isymbuf)
12477 Elf_Internal_Rela *begin_rel = NULL;
12478 Elf_Internal_Rela *irel;
12479 struct nds32_fag fag_head;
12480 Elf_Internal_Shdr *symtab_hdr;
12481 bfd_byte *contents;
12482 bfd_boolean ifc_inside = FALSE;
12484 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12486 /* Per-function fp-base selection.
12487 1. Create a list for all the gp-relative access.
12488 2. Base on those gp-relative address,
12489 find a fp-base which can cover most access.
12490 3. Use the fp-base for fp-as-gp relaxation.
12492 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12494 1. delete the `la $fp, _FP_BASE_' instruction and
12495 2. not convert lwi.gp to lwi37.fp.
12497 To delete the _FP_BASE_ instruction, we simply apply
12498 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12500 To suppress the conversion, we simply NOT to apply
12501 R_NDS32_INSN16_FP7U2_FLAG flag. */
12503 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12505 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12506 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12509 /* Check whether it is worth for fp-as-gp optimization,
12510 i.e., at least 3 gp-load.
12512 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12513 apply this optimization. */
12515 for (irel = internal_relocs; irel < irelend; irel++)
12517 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12518 One we enter the begin of the region, we track all the LW/ST
12519 instructions, so when we leave the region, we try to find
12520 the best fp-base address for those LW/ST instructions. */
12522 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12523 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12525 /* Begin of the region. */
12527 /* xgettext:c-format */
12528 _bfd_error_handler (_("%pB: Nested OMIT_FP in %pA."), abfd, sec);
12531 nds32_fag_init (&fag_head);
12532 ifc_inside = FALSE;
12534 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12535 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12538 struct nds32_fag *best_fag, *tmp_fag;
12541 /* End of the region.
12542 Check whether it is worth to do fp-as-gp. */
12544 if (begin_rel == NULL)
12546 /* xgettext:c-format */
12547 _bfd_error_handler (_("%pB: Unmatched OMIT_FP in %pA."), abfd, sec);
12551 accu = nds32_fag_find_base (&fag_head, &best_fag);
12553 /* Clean FP7U2_FLAG because they may set ever. */
12554 tmp_fag = fag_head.next;
12555 nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend);
12557 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12558 if (accu < FAG_THRESHOLD
12559 || !nds32_fag_mark_relax (link_info, abfd, best_fag,
12560 internal_relocs, irelend))
12562 /* Not worth to do fp-as-gp. */
12563 begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12564 begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12565 irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12566 irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12567 nds32_fag_free_list (&fag_head);
12572 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12573 so we use it to record the distance to the reloction of best
12575 dist = best_fag->relas[0] - begin_rel;
12576 BFD_ASSERT (dist > 0 && dist < 0xffffff);
12577 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12578 relocation. And get the base value when relocating. */
12579 begin_rel->r_addend &= (0x1 << 16) - 1;
12580 begin_rel->r_addend |= dist << 16;
12582 nds32_fag_free_list (&fag_head);
12586 if (begin_rel == NULL || ifc_inside)
12587 /* Skip if we are not in the region of fp-as-gp. */
12590 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA
12591 || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA)
12596 /* A gp-relative access is found. Insert it to the fag-list. */
12598 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12599 insn = bfd_getb32 (contents + irel->r_offset);
12600 if (!N32_IS_RT3 (insn))
12603 addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
12604 nds32_fag_insert (&fag_head, addr, irel);
12606 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA)
12610 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12611 || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
12613 /* Suppress fp as gp when encounter ifc. */
12621 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12624 nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec,
12625 Elf_Internal_Rela *internal_relocs,
12626 Elf_Internal_Rela *irelend)
12628 Elf_Internal_Rela *irel;
12629 Elf_Internal_Shdr *symtab_hdr;
12630 bfd_byte *contents = NULL;
12631 nds32_elf_blank_t *relax_blank_list = NULL;
12632 bfd_boolean result = TRUE;
12633 bfd_boolean unused_region = FALSE;
12636 NOTE: Disable fp-as-gp if we encounter ifcall relocations.
12637 * R_NDS32_17IFC_PCREL_RELA
12638 * R_NDS32_10IFCU_PCREL_RELA
12643 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12644 nds32_get_section_contents (abfd, sec, &contents, TRUE);
12646 for (irel = internal_relocs; irel < irelend; irel++)
12648 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12649 we marked to in previous pass.
12650 DO NOT scan relocations again, since we've alreadly decided it
12651 and set the flag. */
12652 const char *syname;
12656 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12657 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12658 unused_region = TRUE;
12659 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12660 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12661 unused_region = FALSE;
12663 /* We're not in the region. */
12664 if (!unused_region)
12667 /* _FP_BASE_ must be a GLOBAL symbol. */
12668 syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
12669 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
12672 /* The symbol name must be _FP_BASE_. */
12673 syname = elf_sym_hashes (abfd)[syndx]->root.root.string;
12674 if (strcmp (syname, FP_BASE_NAME) != 0)
12677 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA)
12679 /* addi.gp $fp, -256 */
12680 insn = bfd_getb32 (contents + irel->r_offset);
12681 if (insn != INSN_ADDIGP_TO_FP)
12684 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA)
12686 /* addi $fp, $gp, -256 */
12687 insn = bfd_getb32 (contents + irel->r_offset);
12688 if (insn != INSN_ADDI_GP_TO_FP)
12691 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA)
12693 /* movi $fp, FP_BASE */
12694 insn = bfd_getb32 (contents + irel->r_offset);
12695 if (insn != INSN_MOVI_TO_FP)
12701 /* We got here because a FP_BASE instruction is found. */
12702 if (!insert_nds32_elf_blank_recalc_total
12703 (&relax_blank_list, irel->r_offset, 4))
12708 if (relax_blank_list)
12710 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12711 relax_blank_list = NULL;
12720 /* This is a version of bfd_generic_get_relocated_section_contents.
12721 We need this variety because relaxation will modify the dwarf
12722 infomation. When there is undefined symbol reference error mesage,
12723 linker need to dump line number where the symbol be used. However
12724 the address is be relaxed, it can not get the original dwarf contents.
12725 The variety only modify function call for reading in the section. */
12728 nds32_elf_get_relocated_section_contents (bfd *abfd,
12729 struct bfd_link_info *link_info,
12730 struct bfd_link_order *link_order,
12732 bfd_boolean relocatable,
12735 bfd *input_bfd = link_order->u.indirect.section->owner;
12736 asection *input_section = link_order->u.indirect.section;
12738 arelent **reloc_vector;
12741 reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
12742 if (reloc_size < 0)
12745 /* Read in the section. */
12746 if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE))
12749 if (reloc_size == 0)
12752 reloc_vector = (arelent **) bfd_malloc (reloc_size);
12753 if (reloc_vector == NULL)
12756 reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
12757 reloc_vector, symbols);
12758 if (reloc_count < 0)
12761 if (reloc_count > 0)
12764 for (parent = reloc_vector; *parent != NULL; parent++)
12766 char *error_message = NULL;
12768 bfd_reloc_status_type r;
12770 symbol = *(*parent)->sym_ptr_ptr;
12771 if (symbol->section && discarded_section (symbol->section))
12774 static reloc_howto_type none_howto
12775 = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL,
12776 "unused", FALSE, 0, 0, FALSE);
12778 p = data + (*parent)->address * bfd_octets_per_byte (input_bfd);
12779 _bfd_clear_contents ((*parent)->howto, input_bfd, input_section,
12781 (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
12782 (*parent)->addend = 0;
12783 (*parent)->howto = &none_howto;
12787 r = bfd_perform_relocation (input_bfd, *parent, data,
12789 relocatable ? abfd : NULL,
12794 asection *os = input_section->output_section;
12796 /* A partial link, so keep the relocs. */
12797 os->orelocation[os->reloc_count] = *parent;
12801 if (r != bfd_reloc_ok)
12805 case bfd_reloc_undefined:
12806 (*link_info->callbacks->undefined_symbol)
12807 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
12808 input_bfd, input_section, (*parent)->address, TRUE);
12810 case bfd_reloc_dangerous:
12811 BFD_ASSERT (error_message != NULL);
12812 (*link_info->callbacks->reloc_dangerous)
12813 (link_info, error_message,
12814 input_bfd, input_section, (*parent)->address);
12816 case bfd_reloc_overflow:
12817 (*link_info->callbacks->reloc_overflow)
12819 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
12820 (*parent)->howto->name, (*parent)->addend,
12821 input_bfd, input_section, (*parent)->address);
12823 case bfd_reloc_outofrange:
12825 This error can result when processing some partially
12826 complete binaries. Do not abort, but issue an error
12827 message instead. */
12828 link_info->callbacks->einfo
12829 /* xgettext:c-format */
12830 (_("%X%P: %pB(%pA): relocation \"%R\" goes out of range\n"),
12831 abfd, input_section, * parent);
12842 free (reloc_vector);
12846 free (reloc_vector);
12850 /* Link-time IFC relaxation.
12851 In this optimization, we chains jump instructions
12852 of the same destination with ifcall. */
12855 /* List to save jal and j relocation. */
12856 struct elf_nds32_ifc_symbol_entry
12859 struct elf_link_hash_entry *h;
12860 struct elf_nds32_ifc_irel_list *irel_head;
12861 unsigned long insn;
12863 int enable; /* Apply ifc. */
12864 int ex9_enable; /* Apply ifc after ex9. */
12865 struct elf_nds32_ifc_symbol_entry *next;
12868 struct elf_nds32_ifc_irel_list
12870 Elf_Internal_Rela *irel;
12873 /* If this is set, then it is the last instruction for
12874 ifc-chain, so it must be keep for the actual branching. */
12876 struct elf_nds32_ifc_irel_list *next;
12879 static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL;
12881 /* Insert symbol of jal and j for ifc. */
12884 nds32_elf_ifc_insert_symbol (asection *sec,
12885 struct elf_link_hash_entry *h,
12886 Elf_Internal_Rela *irel,
12887 unsigned long insn)
12889 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
12891 /* Check there is target of existing entry the same as the new one. */
12892 while (ptr != NULL)
12894 if (((h == NULL && ptr->sec == sec
12895 && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info)
12896 && ptr->irel_head->irel->r_addend == irel->r_addend)
12899 && ptr->insn == insn)
12901 /* The same target exist, so insert into list. */
12902 struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head;
12904 while (irel_list->next != NULL)
12905 irel_list = irel_list->next;
12906 irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
12907 irel_list = irel_list->next;
12908 irel_list->irel = irel;
12909 irel_list->keep = 1;
12912 irel_list->sec = NULL;
12914 irel_list->sec = sec;
12915 irel_list->next = NULL;
12918 if (ptr->next == NULL)
12923 /* There is no same target entry, so build a new one. */
12924 if (ifc_symbol_head == NULL)
12926 ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
12927 ptr = ifc_symbol_head;
12931 ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry));
12936 ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list));
12937 ptr->irel_head->irel = irel;
12939 ptr->irel_head->keep = 1;
12943 /* Local symbols. */
12945 ptr->irel_head->sec = NULL;
12949 /* Global symbol. */
12951 ptr->irel_head->sec = sec;
12954 ptr->irel_head->next = NULL;
12957 ptr->ex9_enable = 0;
12961 /* Gather all jal and j instructions. */
12964 nds32_elf_ifc_calc (struct bfd_link_info *info,
12965 bfd *abfd, asection *sec)
12967 Elf_Internal_Rela *internal_relocs;
12968 Elf_Internal_Rela *irelend;
12969 Elf_Internal_Rela *irel;
12970 Elf_Internal_Shdr *symtab_hdr;
12971 bfd_byte *contents = NULL;
12972 uint32_t insn, insn_with_reg;
12973 unsigned long r_symndx;
12974 struct elf_link_hash_entry *h;
12975 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
12976 struct elf_nds32_link_hash_table *table;
12977 bfd_boolean ifc_loop_aware;
12979 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
12980 TRUE /* keep_memory */);
12981 irelend = internal_relocs + sec->reloc_count;
12982 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12984 /* Check if the object enable ifc. */
12985 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
12986 R_NDS32_RELAX_ENTRY);
12990 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
12991 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
12992 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG)))
12995 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
12998 table = nds32_elf_hash_table (info);
12999 ifc_loop_aware = table->ifc_loop_aware;
13000 while (irel != NULL && irel < irelend)
13002 /* Traverse all relocation and gather all of them to build the list. */
13004 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN)
13006 if (ifc_loop_aware == 1
13007 && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)
13009 /* Check the region if loop or not. If it is true and
13010 ifc-loop-aware is true, ignore the region till region end. */
13011 while (irel != NULL
13013 && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
13014 || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0))
13019 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
13021 insn = bfd_getb32 (contents + irel->r_offset);
13022 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
13023 r_symndx = ELF32_R_SYM (irel->r_info);
13024 if (r_symndx < symtab_hdr->sh_info)
13026 /* Local symbol. */
13027 nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg);
13031 /* External symbol. */
13032 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
13033 nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg);
13041 /* Determine whether j and jal should be substituted. */
13044 nds32_elf_ifc_filter (struct bfd_link_info *info)
13046 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13047 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13048 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13049 struct elf_nds32_link_hash_table *table;
13050 int target_optimize;
13053 table = nds32_elf_hash_table (info);
13054 target_optimize = table->target_optimize;
13057 irel_ptr = ptr->irel_head;
13058 if (ptr->h == NULL)
13060 /* Local symbol. */
13061 irel_keeper = irel_ptr;
13062 while (irel_ptr && irel_ptr->next)
13064 /* Check there is jump target can be used. */
13065 if ((irel_ptr->next->irel->r_offset
13066 - irel_keeper->irel->r_offset) > 1022)
13067 irel_keeper = irel_ptr->next;
13071 irel_ptr->keep = 0;
13073 irel_ptr = irel_ptr->next;
13078 /* Global symbol. */
13079 /* We have to get the absolute address and decide
13080 whether to keep it or not. */
13083 address = (irel_ptr->irel->r_offset
13084 + irel_ptr->sec->output_section->vma
13085 + irel_ptr->sec->output_offset);
13086 irel_ptr->addr = address;
13087 irel_ptr = irel_ptr->next;
13090 irel_ptr = ptr->irel_head;
13093 /* Sort by address. */
13094 struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr;
13095 struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr;
13096 struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL;
13097 struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL;
13099 /* Get the smallest one. */
13100 while (irel_temp->next)
13102 if (irel_temp->next->addr < irel_dest->addr)
13104 irel_dest_prev = irel_temp;
13105 irel_dest = irel_temp->next;
13107 irel_temp = irel_temp->next;
13110 if (irel_dest != irel_ptr)
13113 irel_ptr_prev->next = irel_dest;
13114 if (irel_dest_prev)
13115 irel_dest_prev->next = irel_ptr;
13116 irel_temp = irel_ptr->next;
13117 irel_ptr->next = irel_dest->next;
13118 irel_dest->next = irel_temp;
13120 irel_ptr_prev = irel_ptr;
13121 irel_ptr = irel_ptr->next;
13124 irel_ptr = ptr->irel_head;
13125 irel_keeper = irel_ptr;
13126 while (irel_ptr && irel_ptr->next)
13128 if ((irel_ptr->next->addr - irel_keeper->addr) > 1022)
13129 irel_keeper = irel_ptr->next;
13133 irel_ptr->keep = 0;
13135 irel_ptr = irel_ptr->next;
13139 /* Ex9 enable. Reserve it for ex9. */
13140 if ((target_optimize & NDS32_RELAX_EX9_ON)
13141 && ptr->irel_head != irel_keeper)
13147 /* Determine whether j and jal should be substituted after ex9 done. */
13150 nds32_elf_ifc_filter_after_ex9 (void)
13152 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13153 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13157 if (ptr->enable == 0)
13159 /* Check whether ifc is applied or not. */
13160 irel_ptr = ptr->irel_head;
13161 ptr->ex9_enable = 1;
13164 if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN)
13167 ptr->ex9_enable = 0;
13170 irel_ptr = irel_ptr->next;
13177 /* Wrapper to do ifc relaxation. */
13180 nds32_elf_ifc_finish (struct bfd_link_info *info)
13183 struct elf_nds32_link_hash_table *table;
13185 table = nds32_elf_hash_table (info);
13186 relax_status = table->relax_status;
13188 if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE))
13189 nds32_elf_ifc_filter (info);
13191 nds32_elf_ifc_filter_after_ex9 ();
13193 if (!nds32_elf_ifc_replace (info))
13197 table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE;
13201 /* Traverse the result of ifc filter and replace it with ifcall9. */
13204 nds32_elf_ifc_replace (struct bfd_link_info *info)
13206 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13207 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13208 nds32_elf_blank_t *relax_blank_list = NULL;
13209 bfd_byte *contents = NULL;
13210 Elf_Internal_Rela *internal_relocs;
13211 Elf_Internal_Rela *irel;
13212 Elf_Internal_Rela *irelend;
13213 unsigned short insn16 = INSN_IFCALL9;
13214 struct elf_nds32_link_hash_table *table;
13217 table = nds32_elf_hash_table (info);
13218 relax_status = table->relax_status;
13222 /* Traverse the ifc gather list, and replace the
13223 filter entries by ifcall9. */
13224 if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1)
13225 || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE)
13226 && ptr->ex9_enable == 1))
13228 irel_ptr = ptr->irel_head;
13229 if (ptr->h == NULL)
13231 /* Local symbol. */
13232 internal_relocs = _bfd_elf_link_read_relocs
13233 (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */);
13234 irelend = internal_relocs + ptr->sec->reloc_count;
13236 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13242 if (irel_ptr->keep == 0 && irel_ptr->next)
13244 /* The one can be replaced. We have to check whether
13245 there is any alignment point in the region. */
13246 irel = irel_ptr->irel;
13247 while (((irel_ptr->next->keep == 0
13248 && irel < irel_ptr->next->irel)
13249 || (irel_ptr->next->keep == 1 && irel < irelend))
13250 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13251 && (irel->r_addend & 0x1f) == 2))
13253 if (irel >= irelend
13254 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13255 && (irel->r_addend & 0x1f) == 2
13256 && ((irel->r_offset - get_nds32_elf_blank_total
13257 (&relax_blank_list, irel->r_offset, 1))
13260 /* Replace by ifcall9. */
13261 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13262 if (!insert_nds32_elf_blank_recalc_total
13263 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13265 irel_ptr->irel->r_info =
13266 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13267 R_NDS32_10IFCU_PCREL_RELA);
13270 irel_ptr = irel_ptr->next;
13273 /* Delete the redundant code. */
13274 if (relax_blank_list)
13276 nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec,
13278 relax_blank_list = NULL;
13283 /* Global symbol. */
13286 if (irel_ptr->keep == 0 && irel_ptr->next)
13288 /* The one can be replaced, and we have to check
13289 whether there is any alignment point in the region. */
13290 internal_relocs = _bfd_elf_link_read_relocs
13291 (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL,
13292 TRUE /* keep_memory */);
13293 irelend = internal_relocs + irel_ptr->sec->reloc_count;
13294 if (!nds32_get_section_contents (irel_ptr->sec->owner,
13295 irel_ptr->sec, &contents,
13299 irel = irel_ptr->irel;
13300 while (((irel_ptr->sec == irel_ptr->next->sec
13301 && irel_ptr->next->keep == 0
13302 && irel < irel_ptr->next->irel)
13303 || ((irel_ptr->sec != irel_ptr->next->sec
13304 || irel_ptr->next->keep == 1)
13305 && irel < irelend))
13306 && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13307 && (irel->r_addend & 0x1f) == 2))
13309 if (irel >= irelend
13310 || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
13311 && (irel->r_addend & 0x1f) == 2
13312 && ((irel->r_offset
13313 - get_nds32_elf_blank_total (&relax_blank_list,
13314 irel->r_offset, 1)) & 0x02) == 0))
13316 /* Replace by ifcall9. */
13317 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13318 if (!insert_nds32_elf_blank_recalc_total
13319 (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2))
13322 /* Delete the redundant code, and clear the relocation. */
13323 nds32_elf_relax_delete_blanks (irel_ptr->sec->owner,
13326 irel_ptr->irel->r_info =
13327 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13328 R_NDS32_10IFCU_PCREL_RELA);
13329 relax_blank_list = NULL;
13333 irel_ptr = irel_ptr->next;
13343 /* Relocate ifcall. */
13346 nds32_elf_ifc_reloc (void)
13348 struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head;
13349 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
13350 struct elf_nds32_ifc_irel_list *irel_keeper = NULL;
13351 bfd_vma relocation, address;
13352 unsigned short insn16;
13353 bfd_byte *contents = NULL;
13354 static bfd_boolean done = FALSE;
13363 /* Check the entry is enable ifcall. */
13364 if (ptr->enable == 1 || ptr->ex9_enable == 1)
13366 /* Get the reserve jump. */
13367 irel_ptr = ptr->irel_head;
13370 if (irel_ptr->keep == 1)
13372 irel_keeper = irel_ptr;
13375 irel_ptr = irel_ptr->next;
13378 irel_ptr = ptr->irel_head;
13379 if (ptr->h == NULL)
13381 /* Local symbol. */
13382 if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec,
13388 if (irel_ptr->keep == 0
13389 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13391 relocation = irel_keeper->irel->r_offset;
13392 relocation = relocation - irel_ptr->irel->r_offset;
13393 while (irel_keeper && relocation > 1022)
13395 irel_keeper = irel_keeper->next;
13396 if (irel_keeper && irel_keeper->keep == 1)
13398 relocation = irel_keeper->irel->r_offset;
13399 relocation = relocation - irel_ptr->irel->r_offset;
13402 if (relocation > 1022)
13404 /* Double check. */
13405 irel_keeper = ptr->irel_head;
13406 while (irel_keeper)
13408 if (irel_keeper->keep == 1)
13410 relocation = irel_keeper->irel->r_offset;
13411 relocation = relocation - irel_ptr->irel->r_offset;
13413 if (relocation <= 1022)
13415 irel_keeper = irel_keeper->next;
13420 irel_ptr->irel->r_info =
13421 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13423 insn16 = INSN_IFCALL9 | (relocation >> 1);
13424 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13426 irel_ptr = irel_ptr->next;
13431 /* Global symbol. */
13434 if (irel_ptr->keep == 0
13435 && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
13437 /* Get the distance between ifcall and jump. */
13438 relocation = (irel_keeper->irel->r_offset
13439 + irel_keeper->sec->output_section->vma
13440 + irel_keeper->sec->output_offset);
13441 address = (irel_ptr->irel->r_offset
13442 + irel_ptr->sec->output_section->vma
13443 + irel_ptr->sec->output_offset);
13444 relocation = relocation - address;
13446 /* The distance is over ragne, find callee again. */
13447 while (irel_keeper && relocation > 1022)
13449 irel_keeper = irel_keeper->next;
13450 if (irel_keeper && irel_keeper->keep ==1)
13452 relocation = (irel_keeper->irel->r_offset
13453 + irel_keeper->sec->output_section->vma
13454 + irel_keeper->sec->output_offset);
13455 relocation = relocation - address;
13459 if (relocation > 1022)
13461 /* Double check. */
13462 irel_keeper = ptr->irel_head;
13463 while (irel_keeper)
13465 if (irel_keeper->keep == 1)
13468 relocation = (irel_keeper->irel->r_offset
13469 + irel_keeper->sec->output_section->vma
13470 + irel_keeper->sec->output_offset);
13471 relocation = relocation - address;
13473 if (relocation <= 1022)
13475 irel_keeper = irel_keeper->next;
13480 if (!nds32_get_section_contents
13481 (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE))
13483 insn16 = INSN_IFCALL9 | (relocation >> 1);
13484 bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset);
13485 irel_ptr->irel->r_info =
13486 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info),
13489 irel_ptr =irel_ptr->next;
13499 /* End of IFC relaxation. */
13501 /* EX9 Instruction Table Relaxation. */
13503 /* Global hash list. */
13504 struct elf_link_hash_entry_list
13506 struct elf_link_hash_entry *h;
13507 struct elf_link_hash_entry_list *next;
13510 /* Save different destination but same insn. */
13511 struct elf_link_hash_entry_mul_list
13513 /* Global symbol times. */
13515 /* Save relocation for each global symbol but useful?? */
13516 Elf_Internal_Rela *irel;
13517 /* For sethi, two sethi may have the same high-part but different low-parts. */
13518 Elf_Internal_Rela rel_backup;
13519 struct elf_link_hash_entry_list *h_list;
13520 struct elf_link_hash_entry_mul_list *next;
13523 /* Instruction hash table. */
13524 struct elf_nds32_code_hash_entry
13526 struct bfd_hash_entry root;
13528 /* For insn that can use relocation or constant ex: sethi. */
13531 struct elf_link_hash_entry_mul_list *m_list;
13532 /* Using r_addend. */
13533 Elf_Internal_Rela *irel;
13534 /* Using r_info. */
13535 Elf_Internal_Rela rel_backup;
13538 /* Instruction count list. */
13539 struct elf_nds32_insn_times_entry
13541 const char *string;
13545 struct elf_link_hash_entry_mul_list *m_list;
13546 Elf_Internal_Rela *irel;
13547 Elf_Internal_Rela rel_backup;
13548 struct elf_nds32_insn_times_entry *next;
13551 /* J and JAL symbol list. */
13552 struct elf_nds32_symbol_entry
13555 unsigned long insn;
13556 struct elf_nds32_symbol_entry *next;
13559 /* Relocation list. */
13560 struct elf_nds32_irel_entry
13562 Elf_Internal_Rela *irel;
13563 struct elf_nds32_irel_entry *next;
13566 /* ex9.it insn need to be fixed. */
13567 struct elf_nds32_ex9_refix
13569 Elf_Internal_Rela *irel;
13571 struct elf_link_hash_entry *h;
13573 struct elf_nds32_ex9_refix *next;
13576 static struct bfd_hash_table ex9_code_table;
13577 static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL;
13578 static struct elf_nds32_ex9_refix *ex9_refix_head = NULL;
13580 /* EX9 hash function. */
13582 static struct bfd_hash_entry *
13583 nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry,
13584 struct bfd_hash_table *table,
13585 const char *string)
13587 struct elf_nds32_code_hash_entry *ret;
13589 /* Allocate the structure if it has not already been allocated by a
13593 entry = (struct bfd_hash_entry *)
13594 bfd_hash_allocate (table, sizeof (*ret));
13599 /* Call the allocation method of the superclass. */
13600 entry = bfd_hash_newfunc (entry, table, string);
13604 ret = (struct elf_nds32_code_hash_entry*) entry;
13606 ret->const_insn = 0;
13607 ret->m_list = NULL;
13613 /* Insert ex9 entry
13614 this insert must be stable sorted by times. */
13617 nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr)
13619 struct elf_nds32_insn_times_entry *temp;
13620 struct elf_nds32_insn_times_entry *temp2;
13622 if (ex9_insn_head == NULL)
13624 ex9_insn_head = ptr;
13629 temp = ex9_insn_head;
13630 temp2 = ex9_insn_head;
13631 while (temp->next &&
13632 (temp->next->times >= ptr->times
13633 || temp->times == -1))
13635 if (temp->times == -1)
13639 if (ptr->times > temp->times && temp->times != -1)
13642 if (temp2->times == -1)
13645 ex9_insn_head = ptr;
13647 else if (temp->next == NULL)
13654 ptr->next = temp->next;
13660 /* Examine each insn times in hash table.
13661 Handle multi-link hash entry.
13663 TODO: This function doesn't assign so much info since it is fake. */
13666 nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h)
13668 struct elf_nds32_insn_times_entry *ptr;
13671 if (h->m_list == NULL)
13673 /* Local symbol insn or insn without relocation. */
13677 ptr = (struct elf_nds32_insn_times_entry *)
13678 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13679 ptr->times = h->times;
13680 ptr->string = h->root.string;
13681 ptr->m_list = NULL;
13683 ptr->irel = h->irel;
13684 ptr->rel_backup = h->rel_backup;
13685 nds32_elf_ex9_insert_entry (ptr);
13689 /* Global symbol insn. */
13690 /* Only sethi insn has multiple m_list. */
13691 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
13696 times += m_list->times;
13697 m_list = m_list->next;
13701 m_list = h->m_list;
13702 ptr = (struct elf_nds32_insn_times_entry *)
13703 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13704 ptr->times = times; /* Use the total times. */
13705 ptr->string = h->root.string;
13706 ptr->m_list = m_list;
13708 ptr->irel = m_list->irel;
13709 ptr->rel_backup = m_list->rel_backup;
13710 nds32_elf_ex9_insert_entry (ptr);
13712 if (h->const_insn == 1)
13714 /* sethi with constant value. */
13718 ptr = (struct elf_nds32_insn_times_entry *)
13719 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13720 ptr->times = h->times;
13721 ptr->string = h->root.string;
13722 ptr->m_list = NULL;
13725 ptr->rel_backup = h->rel_backup;
13726 nds32_elf_ex9_insert_entry (ptr);
13732 /* Count each insn times in hash table.
13733 Handle multi-link hash entry. */
13736 nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h)
13738 int reservation, times;
13739 unsigned long relocation, min_relocation;
13740 struct elf_nds32_insn_times_entry *ptr;
13742 if (h->m_list == NULL)
13744 /* Local symbol insn or insn without relocation. */
13747 ptr = (struct elf_nds32_insn_times_entry *)
13748 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13749 ptr->times = h->times;
13750 ptr->string = h->root.string;
13751 ptr->m_list = NULL;
13753 ptr->irel = h->irel;
13754 ptr->rel_backup = h->rel_backup;
13755 nds32_elf_ex9_insert_entry (ptr);
13759 /* Global symbol insn. */
13760 /* Only sethi insn has multiple m_list. */
13761 struct elf_link_hash_entry_mul_list *m_list = h->m_list;
13763 if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA
13764 && m_list->next != NULL)
13766 /* Sethi insn has different symbol or addend but has same hi20. */
13770 min_relocation = 0xffffffff;
13773 /* Get the minimum sethi address
13774 and calculate how many entry the sethi-list have to use. */
13775 if ((m_list->h_list->h->root.type == bfd_link_hash_defined
13776 || m_list->h_list->h->root.type == bfd_link_hash_defweak)
13777 && (m_list->h_list->h->root.u.def.section != NULL
13778 && m_list->h_list->h->root.u.def.section->output_section != NULL))
13780 relocation = (m_list->h_list->h->root.u.def.value +
13781 m_list->h_list->h->root.u.def.section->output_section->vma +
13782 m_list->h_list->h->root.u.def.section->output_offset);
13783 relocation += m_list->irel->r_addend;
13787 if (relocation < min_relocation)
13788 min_relocation = relocation;
13789 times += m_list->times;
13790 m_list = m_list->next;
13792 if (min_relocation < ex9_relax_size)
13793 reservation = (min_relocation >> 12) + 1;
13795 reservation = (min_relocation >> 12)
13796 - ((min_relocation - ex9_relax_size) >> 12) + 1;
13797 if (reservation < (times / 3))
13799 /* Efficient enough to use ex9. */
13802 for (i = reservation ; i > 0; i--)
13804 /* Allocate number of reservation ex9 entry. */
13805 ptr = (struct elf_nds32_insn_times_entry *)
13806 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13807 ptr->times = h->m_list->times / reservation;
13808 ptr->string = h->root.string;
13809 ptr->m_list = h->m_list;
13811 ptr->irel = h->m_list->irel;
13812 ptr->rel_backup = h->m_list->rel_backup;
13813 nds32_elf_ex9_insert_entry (ptr);
13819 /* Normal global symbol that means no different address symbol
13820 using same ex9 entry. */
13821 if (m_list->times >= 3)
13823 ptr = (struct elf_nds32_insn_times_entry *)
13824 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13825 ptr->times = m_list->times;
13826 ptr->string = h->root.string;
13827 ptr->m_list = h->m_list;
13829 ptr->irel = h->m_list->irel;
13830 ptr->rel_backup = h->m_list->rel_backup;
13831 nds32_elf_ex9_insert_entry (ptr);
13835 if (h->const_insn == 1)
13837 /* sethi with constant value. */
13841 ptr = (struct elf_nds32_insn_times_entry *)
13842 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
13843 ptr->times = h->times;
13844 ptr->string = h->root.string;
13845 ptr->m_list = NULL;
13848 ptr->rel_backup = h->rel_backup;
13849 nds32_elf_ex9_insert_entry (ptr);
13856 /* Hash table traverse function. */
13859 nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*))
13863 ex9_code_table.frozen = 1;
13864 for (i = 0; i < ex9_code_table.size; i++)
13866 struct bfd_hash_entry *p;
13868 for (p = ex9_code_table.table[i]; p != NULL; p = p->next)
13869 if (!func ((struct elf_nds32_code_hash_entry *) p))
13873 ex9_code_table.frozen = 0;
13877 /* Give order number to insn list. */
13880 nds32_elf_order_insn_times (struct bfd_link_info *info)
13882 struct elf_nds32_insn_times_entry *ex9_insn;
13883 struct elf_nds32_insn_times_entry *temp = NULL;
13884 struct elf_nds32_link_hash_table *table;
13888 if (ex9_insn_head == NULL)
13891 /* The max number of entries is 512. */
13892 ex9_insn = ex9_insn_head;
13893 table = nds32_elf_hash_table (info);
13894 ex9_limit = table->ex9_limit;
13896 ex9_insn = ex9_insn_head;
13898 while (ex9_insn != NULL && number < ex9_limit)
13900 ex9_insn->order = number;
13903 ex9_insn = ex9_insn->next;
13906 if (ex9_insn && temp)
13909 while (ex9_insn != NULL)
13911 /* Free useless entry. */
13913 ex9_insn = ex9_insn->next;
13918 /* Build .ex9.itable section. */
13921 nds32_elf_ex9_build_itable (struct bfd_link_info *link_info)
13923 asection *table_sec;
13924 struct elf_nds32_insn_times_entry *ptr;
13927 bfd_byte *contents = NULL;
13929 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
13930 it_abfd = it_abfd->link.next)
13932 /* Find the section .ex9.itable, and put all entries into it. */
13933 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
13934 if (table_sec != NULL)
13936 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
13939 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
13942 table_sec->size = number * 4;
13947 elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST;
13949 for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next)
13953 val = strtol (ptr->string, NULL, 16);
13954 bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4));
13962 /* Get insn with regs according to relocation type. */
13965 nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel,
13966 uint32_t insn, uint32_t *insn_with_reg)
13968 reloc_howto_type *howto = NULL;
13971 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
13972 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
13973 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
13975 *insn_with_reg = insn;
13979 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
13980 *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask);
13983 /* Mask number of address bits according to relocation. */
13985 static unsigned long
13986 nds32_elf_irel_mask (Elf_Internal_Rela *irel)
13988 reloc_howto_type *howto = NULL;
13991 || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table)
13992 && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY)
13993 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table)))
13996 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
13997 return howto->dst_mask;
14001 nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list,
14002 struct elf_nds32_irel_entry *irel_ptr)
14004 if (*irel_list == NULL)
14006 *irel_list = irel_ptr;
14007 irel_ptr->next = NULL;
14011 irel_ptr->next = *irel_list;
14012 *irel_list = irel_ptr;
14017 nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel,
14018 struct elf_link_hash_entry *h, int order)
14020 struct elf_nds32_ex9_refix *ptr;
14022 ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix));
14026 ptr->order = order;
14029 if (ex9_refix_head == NULL)
14030 ex9_refix_head = ptr;
14033 struct elf_nds32_ex9_refix *temp = ex9_refix_head;
14035 while (temp->next != NULL)
14044 CLEAN_PRE = 1 << 1,
14048 /* Check relocation type if supporting for ex9. */
14051 nds32_elf_ex9_relocation_check (struct bfd_link_info *info,
14052 Elf_Internal_Rela **irel,
14053 Elf_Internal_Rela *irelend,
14054 nds32_elf_blank_t *relax_blank_list,
14055 asection *sec,bfd_vma *off,
14056 bfd_byte *contents)
14058 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
14059 bfd_boolean nested_ex9, nested_loop;
14060 bfd_boolean ex9_loop_aware;
14061 /* We use the highest 1 byte of result to record
14062 how many bytes location counter has to move. */
14064 Elf_Internal_Rela *irel_save = NULL;
14065 struct elf_nds32_link_hash_table *table;
14067 table = nds32_elf_hash_table (info);
14068 ex9_loop_aware = table->ex9_loop_aware;
14070 while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset)
14072 switch (ELF32_R_TYPE ((*irel)->r_info))
14074 case R_NDS32_RELAX_REGION_BEGIN:
14075 /* Ignore code block. */
14076 nested_ex9 = FALSE;
14077 nested_loop = FALSE;
14078 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG)
14080 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)))
14082 /* Check the region if loop or not. If it is true and
14083 ex9-loop-aware is true, ignore the region till region end. */
14084 /* To save the status for in .no_relax ex9 region and
14085 loop region to conform the block can do ex9 relaxation. */
14086 nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG);
14087 nested_loop = (ex9_loop_aware
14088 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG));
14089 while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop))
14092 if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN)
14094 /* There may be nested region. */
14095 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14097 else if (ex9_loop_aware
14098 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14099 nested_loop = TRUE;
14101 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END)
14103 /* The end of region. */
14104 if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0)
14105 nested_ex9 = FALSE;
14106 else if (ex9_loop_aware
14107 && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))
14108 nested_loop = FALSE;
14110 else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL
14111 && ((*irel)->r_addend & 0x1f) == 2)
14113 /* Alignment exist in the region. */
14114 result |= CLEAN_PRE;
14115 if (((*irel)->r_offset -
14116 get_nds32_elf_blank_total (&relax_blank_list,
14117 (*irel)->r_offset, 0)) & 0x02)
14118 result |= PUSH_PRE;
14121 if ((*irel) >= irelend)
14124 *off = (*irel)->r_offset;
14126 /* The final instruction in the region, regard this one as data to ignore it. */
14127 result |= DATA_EXIST;
14132 case R_NDS32_LABEL:
14133 if (((*irel)->r_addend & 0x1f) == 2)
14135 /* Check this point is align and decide to do ex9 or not. */
14136 result |= CLEAN_PRE;
14137 if (((*irel)->r_offset -
14138 get_nds32_elf_blank_total (&relax_blank_list,
14139 (*irel)->r_offset, 0)) & 0x02)
14140 result |= PUSH_PRE;
14143 case R_NDS32_32_RELA:
14145 result |= (4 << 24);
14146 result |= DATA_EXIST;
14148 case R_NDS32_16_RELA:
14150 result |= (2 << 24);
14151 result |= DATA_EXIST;
14155 /* The least code alignment is 2. If the data is only one byte,
14156 we have to shift one more byte. */
14157 if ((*irel)->r_addend == 1)
14158 result |= ((*irel)->r_addend << 25) ;
14160 result |= ((*irel)->r_addend << 24) ;
14162 result |= DATA_EXIST;
14165 case R_NDS32_25_PCREL_RELA:
14166 case R_NDS32_SDA16S3_RELA:
14167 case R_NDS32_SDA15S3_RELA:
14168 case R_NDS32_SDA15S3:
14169 case R_NDS32_SDA17S2_RELA:
14170 case R_NDS32_SDA15S2_RELA:
14171 case R_NDS32_SDA12S2_SP_RELA:
14172 case R_NDS32_SDA12S2_DP_RELA:
14173 case R_NDS32_SDA15S2:
14174 case R_NDS32_SDA18S1_RELA:
14175 case R_NDS32_SDA15S1_RELA:
14176 case R_NDS32_SDA15S1:
14177 case R_NDS32_SDA19S0_RELA:
14178 case R_NDS32_SDA15S0_RELA:
14179 case R_NDS32_SDA15S0:
14180 case R_NDS32_HI20_RELA:
14181 case R_NDS32_LO12S0_ORI_RELA:
14182 case R_NDS32_LO12S0_RELA:
14183 case R_NDS32_LO12S1_RELA:
14184 case R_NDS32_LO12S2_RELA:
14185 /* These relocation is supported ex9 relaxation currently. */
14186 /* We have to save the relocation for using later, since we have
14187 to check there is any alignment in the same address. */
14191 /* Not support relocations. */
14192 if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table)
14193 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE
14194 && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16)
14196 /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here.
14197 But we have to consider if there is any side-effect. */
14198 if (!(result & DATA_EXIST))
14200 /* We have to confirm there is no data relocation in the
14201 same address. In general case, this won't happen. */
14202 /* We have to do ex9 conservative, for those relocation not
14203 considerd we ignore instruction. */
14204 result |= DATA_EXIST;
14205 if (*(contents + *off) & 0x80)
14206 result |= (2 << 24);
14208 result |= (4 << 24);
14213 if ((*irel) < irelend
14214 && ((*irel) + 1) < irelend
14215 && (*irel)->r_offset == ((*irel) + 1)->r_offset)
14216 /* There are relocations pointing to the same address, we have to
14217 check all of them. */
14229 /* Replace with ex9 instruction. */
14232 nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off,
14233 nds32_elf_blank_t **relax_blank_list,
14234 struct elf_nds32_irel_entry *pre_irel_ptr,
14235 struct elf_nds32_irel_entry **irel_list)
14239 /* Implement the ex9 relaxation. */
14240 bfd_putb16 (insn16, contents + pre_off);
14241 if (!insert_nds32_elf_blank_recalc_total (relax_blank_list,
14244 if (pre_irel_ptr != NULL)
14245 nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr);
14250 /* Replace input file instruction which is in ex9 itable. */
14253 nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec)
14255 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
14256 bfd_byte *contents = NULL;
14258 uint16_t insn16, insn_ex9;
14259 /* `pre_*' are used to track previous instruction that can use ex9.it. */
14260 bfd_vma pre_off = -1;
14261 uint16_t pre_insn16 = 0;
14262 struct elf_nds32_irel_entry *pre_irel_ptr = NULL;
14263 Elf_Internal_Rela *internal_relocs;
14264 Elf_Internal_Rela *irel;
14265 Elf_Internal_Rela *irelend;
14266 Elf_Internal_Shdr *symtab_hdr;
14267 Elf_Internal_Sym *isym = NULL;
14268 nds32_elf_blank_t *relax_blank_list = NULL;
14270 uint32_t insn_with_reg = 0;
14272 uint32_t it_insn_with_reg;
14273 unsigned long r_symndx;
14275 struct elf_nds32_irel_entry *irel_list = NULL;
14276 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
14277 int data_flag, do_replace, save_irel;
14278 struct elf_link_hash_entry_list *h_list;
14281 /* Load section instructions, relocations, and symbol table. */
14282 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
14283 || !nds32_get_local_syms (abfd, sec, &isym))
14286 _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */);
14287 irelend = internal_relocs + sec->reloc_count;
14288 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
14292 /* Check if the object enable ex9. */
14293 irel = find_relocs_at_address (internal_relocs, internal_relocs,
14294 irelend, R_NDS32_RELAX_ENTRY);
14296 /* Check this section trigger ex9 relaxation. */
14299 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
14300 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
14301 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
14304 irel = internal_relocs;
14306 /* Check alignment and fetch proper relocation. */
14307 while (off < sec->size)
14309 struct elf_link_hash_entry *h = NULL;
14310 struct elf_nds32_irel_entry *irel_ptr = NULL;
14312 /* Syn the instruction and the relocation. */
14313 while (irel != NULL && irel < irelend && irel->r_offset < off)
14316 data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend,
14317 relax_blank_list, sec,
14319 if (data_flag & PUSH_PRE)
14320 if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14321 &relax_blank_list, pre_irel_ptr,
14325 if (data_flag & CLEAN_PRE)
14329 pre_irel_ptr = NULL;
14331 if (data_flag & DATA_EXIST)
14333 /* We save the move offset in the highest byte. */
14334 off += (data_flag >> 24);
14338 if (*(contents + off) & 0x80)
14340 /* 2-byte instruction. */
14345 /* Load the instruction and its opcode with register for comparing. */
14346 ex9_insn = ex9_insn_head;
14347 insn = bfd_getb32 (contents + off);
14351 it_insn = strtol (ex9_insn->string, NULL, 16);
14352 it_insn_with_reg = 0;
14356 if (irel != NULL && irel < irelend && irel->r_offset == off)
14358 /* Insn with relocation. */
14359 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
14361 if (ex9_insn->irel != NULL)
14362 nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn,
14363 &it_insn_with_reg);
14365 if (ex9_insn->irel != NULL
14366 && (ELF32_R_TYPE (irel->r_info) ==
14367 ELF32_R_TYPE (ex9_insn->irel->r_info))
14368 && (insn_with_reg == it_insn_with_reg))
14370 /* Insn relocation and format is the same as table entry. */
14372 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
14373 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
14374 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
14375 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
14376 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
14377 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
14378 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
14379 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
14380 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
14381 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
14382 && ELF32_R_TYPE (irel->r_info) <=
14383 R_NDS32_SDA12S2_SP_RELA)
14384 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
14385 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
14387 r_symndx = ELF32_R_SYM (irel->r_info);
14388 if (r_symndx < symtab_hdr->sh_info)
14390 /* Local symbol. */
14391 int shndx = isym[r_symndx].st_shndx;
14393 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14394 if (ex9_insn->sec == isec
14395 && ex9_insn->irel->r_addend == irel->r_addend
14396 && ex9_insn->irel->r_info == irel->r_info)
14404 /* External symbol. */
14405 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14406 if (ex9_insn->m_list)
14408 h_list = ex9_insn->m_list->h_list;
14412 && (ex9_insn->m_list->irel->r_addend ==
14419 h_list = h_list->next;
14424 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA)
14426 r_symndx = ELF32_R_SYM (irel->r_info);
14427 if (r_symndx < symtab_hdr->sh_info)
14429 /* Local symbols. Compare its base symbol and offset. */
14430 int shndx = isym[r_symndx].st_shndx;
14432 isec = elf_elfsections (abfd)[shndx]->bfd_section;
14433 if (ex9_insn->sec == isec
14434 && ex9_insn->irel->r_addend == irel->r_addend
14435 && ex9_insn->irel->r_info == irel->r_info)
14443 /* External symbol. */
14444 struct elf_link_hash_entry_mul_list *m_list;
14446 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14447 m_list = ex9_insn->m_list;
14451 h_list = m_list->h_list;
14456 && (m_list->irel->r_addend
14457 == irel->r_addend))
14462 && ex9_insn->m_list
14463 && ex9_insn->m_list == ex9_insn->next->m_list)
14465 /* sethi multiple entry must be fixed */
14466 nds32_elf_ex9_insert_fix (sec, irel,
14467 h, ex9_insn->order);
14471 h_list = h_list->next;
14473 m_list = m_list->next;
14479 /* Import table: Check the symbol hash table and the
14480 jump target. Only R_NDS32_25_PCREL_RELA now. */
14481 else if (ex9_insn->times == -1
14482 && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA)
14484 nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg);
14485 if (insn_with_reg == it_insn_with_reg)
14488 bfd_vma relocation;
14490 r_symndx = ELF32_R_SYM (irel->r_info);
14491 if (r_symndx >= symtab_hdr->sh_info)
14493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
14494 if ((h->root.type == bfd_link_hash_defined
14495 || h->root.type == bfd_link_hash_defweak)
14496 && h->root.u.def.section != NULL
14497 && h->root.u.def.section->output_section != NULL
14498 && h->root.u.def.section->gc_mark == 1
14499 && bfd_is_abs_section (h->root.u.def.section)
14500 && h->root.u.def.value > sec->size)
14502 relocation = h->root.u.def.value +
14503 h->root.u.def.section->output_section->vma +
14504 h->root.u.def.section->output_offset;
14505 relocation += irel->r_addend;
14506 insn = insn_with_reg
14507 | ((relocation >> 1) & 0xffffff);
14508 snprintf (code, sizeof (code), "%08x", insn);
14509 if (strcmp (code, ex9_insn->string) == 0)
14518 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
14519 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
14520 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
14522 /* These relocations do not have to relocate contens, so it can
14523 be regard as instruction without relocation. */
14524 if (insn == it_insn && ex9_insn->irel == NULL)
14530 /* Instruction without relocation, we only
14531 have to compare their byte code. */
14532 if (insn == it_insn && ex9_insn->irel == NULL)
14536 /* Insntruction match so replacing the code here. */
14537 if (do_replace == 1)
14539 /* There are two formats of ex9 instruction. */
14540 if (ex9_insn->order < 32)
14541 insn_ex9 = INSN_EX9_IT_2;
14543 insn_ex9 = INSN_EX9_IT_1;
14544 insn16 = insn_ex9 | ex9_insn->order;
14546 /* Insert ex9 instruction. */
14547 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14548 &relax_blank_list, pre_irel_ptr,
14551 pre_insn16 = insn16;
14555 /* For instuction with relocation do relax. */
14556 irel_ptr = (struct elf_nds32_irel_entry *)
14557 bfd_malloc (sizeof (struct elf_nds32_irel_entry));
14558 irel_ptr->irel = irel;
14559 irel_ptr->next = NULL;
14560 pre_irel_ptr = irel_ptr;
14563 pre_irel_ptr = NULL;
14566 ex9_insn = ex9_insn->next;
14571 /* Insert ex9 instruction. */
14572 nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off,
14573 &relax_blank_list, pre_irel_ptr,
14576 /* Delete the redundant code. */
14577 if (relax_blank_list)
14579 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
14580 relax_blank_list = NULL;
14583 /* Clear the relocation that is replaced by ex9. */
14586 struct elf_nds32_irel_entry *irel_ptr;
14588 irel_ptr = irel_list;
14589 irel_list = irel_ptr->next;
14590 irel_ptr->irel->r_info =
14591 ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN);
14597 /* Initialize ex9 hash table. */
14600 nds32_elf_ex9_init (void)
14602 if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc,
14603 sizeof (struct elf_nds32_code_hash_entry),
14606 _bfd_error_handler (_("Linker: cannot init ex9 hash table error \n"));
14612 /* Predict how many bytes will be relaxed with ex9 and ifc. */
14615 nds32_elf_ex9_total_relax (struct bfd_link_info *info)
14617 struct elf_nds32_insn_times_entry *ex9_insn;
14618 struct elf_nds32_insn_times_entry *temp;
14619 int target_optimize;
14620 struct elf_nds32_link_hash_table *table;
14622 if (ex9_insn_head == NULL)
14625 table = nds32_elf_hash_table (info);
14626 target_optimize = table->target_optimize;
14627 ex9_insn = ex9_insn_head;
14630 ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size;
14632 ex9_insn = ex9_insn->next;
14635 ex9_insn_head = NULL;
14637 if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON))
14639 /* Examine ifc reduce size. */
14640 struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head;
14641 struct elf_nds32_ifc_irel_list *irel_ptr = NULL;
14646 if (ifc_ent->enable == 0)
14649 irel_ptr = ifc_ent->irel_head;
14653 irel_ptr = irel_ptr->next;
14657 ifc_ent = ifc_ent->next;
14659 ex9_relax_size += size;
14663 /* Finish ex9 table. */
14666 nds32_elf_ex9_finish (struct bfd_link_info *link_info)
14668 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
14669 nds32_elf_order_insn_times (link_info);
14670 nds32_elf_ex9_total_relax (link_info);
14671 /* Traverse the hash table and count its times. */
14672 nds32_elf_code_hash_traverse (nds32_elf_count_insn_times);
14673 nds32_elf_order_insn_times (link_info);
14674 nds32_elf_ex9_build_itable (link_info);
14677 /* Relocate the entries in ex9 table. */
14680 nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr,
14681 struct bfd_link_info *link_info)
14683 Elf_Internal_Sym *isym = NULL;
14684 bfd_vma relocation = -1;
14685 struct elf_link_hash_entry *h;
14687 if (ptr->m_list != NULL)
14689 /* Global symbol. */
14690 h = ptr->m_list->h_list->h;
14691 if ((h->root.type == bfd_link_hash_defined
14692 || h->root.type == bfd_link_hash_defweak)
14693 && h->root.u.def.section != NULL
14694 && h->root.u.def.section->output_section != NULL)
14697 relocation = h->root.u.def.value +
14698 h->root.u.def.section->output_section->vma +
14699 h->root.u.def.section->output_offset;
14700 relocation += ptr->m_list->irel->r_addend;
14705 else if (ptr->sec !=NULL)
14707 /* Local symbol. */
14708 Elf_Internal_Sym sym;
14709 asection *sec = NULL;
14711 asection *isec_ptr = &isec;
14712 Elf_Internal_Rela irel_backup = *(ptr->irel);
14713 asection *sec_backup = ptr->sec;
14714 bfd *abfd = ptr->sec->owner;
14716 if (!nds32_get_local_syms (abfd, sec, &isym))
14718 isym = isym + ELF32_R_SYM (ptr->irel->r_info);
14720 sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
14725 /* The purpose is same as elf_link_input_bfd. */
14726 if (isec_ptr != NULL
14727 && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE
14728 && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
14731 _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr,
14732 elf_section_data (isec_ptr)->sec_info,
14735 relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym,
14736 &ptr->sec, ptr->irel);
14737 if (ptr->irel != NULL)
14738 relocation += ptr->irel->r_addend;
14740 /* Restore origin value since there may be some insntructions that
14741 could not be replaced with ex9.it. */
14742 *(ptr->irel) = irel_backup;
14743 ptr->sec = sec_backup;
14749 /* Import ex9 table and build list. */
14752 nds32_elf_ex9_import_table (struct bfd_link_info *info)
14755 bfd_byte *contents;
14756 FILE *ex9_import_file;
14757 int update_ex9_table;
14758 struct elf_nds32_link_hash_table *table;
14760 table = nds32_elf_hash_table (info);
14761 ex9_import_file = table->ex9_import_file;
14762 rewind (table->ex9_import_file);
14764 contents = bfd_malloc (sizeof (bfd_byte) * 4);
14766 /* Read instructions from the input file and build the list. */
14767 while (!feof (ex9_import_file))
14769 unsigned long insn;
14771 struct elf_nds32_insn_times_entry *ptr;
14774 nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file);
14775 /* Ignore the final byte 0x0a. */
14778 insn = bfd_getb32 (contents);
14779 code = bfd_malloc (sizeof (char) * 9);
14780 snprintf (code, 9, "%08lx", (insn & 0xffffffff));
14781 ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry));
14782 ptr->string = code;
14786 ptr->m_list = NULL;
14787 ptr->rel_backup.r_offset = 0;
14788 ptr->rel_backup.r_info = 0;
14789 ptr->rel_backup.r_addend = 0;
14792 nds32_elf_ex9_insert_entry (ptr);
14796 update_ex9_table = table->update_ex9_table;
14797 if (update_ex9_table == 1)
14799 /* It has to consider of sethi need to use multiple page
14800 but it not be done yet. */
14801 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times);
14802 nds32_elf_order_insn_times (info);
14806 /* Export ex9 table. */
14809 nds32_elf_ex9_export (struct bfd_link_info *info,
14810 bfd_byte *contents, int size)
14812 FILE *ex9_export_file;
14813 struct elf_nds32_link_hash_table *table;
14815 table = nds32_elf_hash_table (info);
14816 ex9_export_file = table->ex9_export_file;
14817 fwrite (contents, sizeof (bfd_byte), size, ex9_export_file);
14818 fclose (ex9_export_file);
14821 /* Adjust relocations of J and JAL in ex9.itable.
14822 Export ex9 table. */
14825 nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info)
14827 asection *table_sec = NULL;
14828 struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head;
14829 struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2;
14831 uint32_t insn, insn_with_reg, source_insn;
14832 bfd_byte *contents = NULL, *source_contents = NULL;
14835 int shift, update_ex9_table, offset = 0;
14836 reloc_howto_type *howto = NULL;
14837 Elf_Internal_Rela rel_backup;
14838 unsigned short insn_ex9;
14839 struct elf_nds32_link_hash_table *table;
14840 FILE *ex9_export_file;
14841 static bfd_boolean done = FALSE;
14848 table = nds32_elf_hash_table (link_info);
14850 table->relax_status |= NDS32_RELAX_EX9_DONE;
14853 update_ex9_table = table->update_ex9_table;
14854 /* Generated ex9.itable exactly. */
14855 if (update_ex9_table == 0)
14857 for (it_abfd = link_info->input_bfds; it_abfd != NULL;
14858 it_abfd = it_abfd->link.next)
14860 table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable");
14861 if (table_sec != NULL)
14865 if (table_sec != NULL)
14869 output_bfd = table_sec->output_section->owner;
14870 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
14871 if (table_sec->size == 0)
14874 if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE))
14883 output_bfd = link_info->input_bfds->sections->output_section->owner;
14884 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
14885 contents = bfd_malloc (sizeof (bfd_byte) * 2048);
14888 /* Relocate instruction. */
14891 bfd_vma relocation, min_relocation = 0xffffffff;
14893 insn = strtol (ex9_insn->string, NULL, 16);
14895 if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL)
14897 if (ex9_insn->m_list)
14898 rel_backup = ex9_insn->m_list->rel_backup;
14900 rel_backup = ex9_insn->rel_backup;
14902 nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg);
14904 bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE
14905 (rel_backup.r_info));
14906 shift = howto->rightshift;
14907 if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA
14908 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA
14909 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA
14910 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA
14911 || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA)
14913 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
14915 insn_with_reg | ((relocation >> shift) &
14916 nds32_elf_irel_mask (&rel_backup));
14917 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
14919 else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3
14920 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0)
14921 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA
14922 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA)
14923 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA
14924 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA)
14925 || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA
14926 && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA))
14928 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
14930 insn_with_reg | (((relocation - gp) >> shift) &
14931 nds32_elf_irel_mask (&rel_backup));
14932 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
14934 else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA)
14936 /* Sethi may be multiple entry for one insn. */
14937 if (ex9_insn->next && ex9_insn->m_list
14938 && ex9_insn->m_list == ex9_insn->next->m_list)
14940 struct elf_link_hash_entry_mul_list *m_list;
14941 struct elf_nds32_ex9_refix *fix_ptr;
14942 struct elf_link_hash_entry *h;
14944 temp_ptr = ex9_insn;
14945 temp_ptr2 = ex9_insn;
14946 m_list = ex9_insn->m_list;
14949 h = m_list->h_list->h;
14950 relocation = h->root.u.def.value +
14951 h->root.u.def.section->output_section->vma +
14952 h->root.u.def.section->output_offset;
14953 relocation += m_list->irel->r_addend;
14955 if (relocation < min_relocation)
14956 min_relocation = relocation;
14957 m_list = m_list->next;
14959 relocation = min_relocation;
14961 /* Put insntruction into ex9 table. */
14962 insn = insn_with_reg
14963 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
14964 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
14965 relocation = relocation + 0x1000; /* hi20 */
14967 while (ex9_insn->next && ex9_insn->m_list
14968 && ex9_insn->m_list == ex9_insn->next->m_list)
14970 /* Multiple sethi. */
14971 ex9_insn = ex9_insn->next;
14974 insn_with_reg | ((relocation >> shift) &
14975 nds32_elf_irel_mask (&rel_backup));
14976 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
14977 relocation = relocation + 0x1000; /* hi20 */
14980 fix_ptr = ex9_refix_head;
14983 /* Fix ex9 insn. */
14984 /* temp_ptr2 points to the head of multiple sethi. */
14985 temp_ptr = temp_ptr2;
14986 while (fix_ptr->order != temp_ptr->order && fix_ptr->next)
14988 fix_ptr = fix_ptr->next;
14990 if (fix_ptr->order != temp_ptr->order)
14993 /* Set source insn. */
14995 fix_ptr->h->root.u.def.value +
14996 fix_ptr->h->root.u.def.section->output_section->vma +
14997 fix_ptr->h->root.u.def.section->output_offset;
14998 relocation += fix_ptr->irel->r_addend;
14999 /* sethi imm is imm20s. */
15000 source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff);
15004 /* Match entry and source code. */
15005 insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset);
15006 if (insn == source_insn)
15008 /* Fix the ex9 insn. */
15009 if (temp_ptr->order != fix_ptr->order)
15011 if (!nds32_get_section_contents
15012 (fix_ptr->sec->owner, fix_ptr->sec,
15013 &source_contents, TRUE))
15015 (_("Linker: error cannot fixed ex9 relocation \n"));
15016 if (temp_ptr->order < 32)
15017 insn_ex9 = INSN_EX9_IT_2;
15019 insn_ex9 = INSN_EX9_IT_1;
15020 insn_ex9 = insn_ex9 | temp_ptr->order;
15021 bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset);
15027 if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list)
15029 (_("Linker: error cannot fixed ex9 relocation \n"));
15031 temp_ptr = temp_ptr->next;
15034 fix_ptr = fix_ptr->next;
15039 relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info);
15040 insn = insn_with_reg
15041 | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup));
15042 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15048 /* Insn without relocation does not have to be fixed
15049 if need to update export table. */
15050 if (update_ex9_table == 1)
15051 bfd_putb32 (insn, contents + (ex9_insn->order) * 4);
15053 ex9_insn = ex9_insn->next;
15057 ex9_export_file = table->ex9_export_file;
15058 if (ex9_export_file != NULL)
15059 nds32_elf_ex9_export (link_info, contents, table_sec->size);
15060 else if (update_ex9_table == 1)
15062 table->ex9_export_file = table->ex9_import_file;
15063 rewind (table->ex9_export_file);
15064 nds32_elf_ex9_export (link_info, contents, size);
15068 /* Generate ex9 hash table. */
15071 nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec,
15072 struct bfd_link_info *link_info)
15074 Elf_Internal_Rela *internal_relocs;
15075 Elf_Internal_Rela *irelend;
15076 Elf_Internal_Rela *irel;
15077 Elf_Internal_Rela *jrel;
15078 Elf_Internal_Rela rel_backup;
15079 Elf_Internal_Shdr *symtab_hdr;
15080 Elf_Internal_Sym *isym = NULL;
15082 struct elf_link_hash_entry **sym_hashes;
15083 bfd_byte *contents = NULL;
15085 unsigned long r_symndx;
15086 uint32_t insn, insn_with_reg;
15087 struct elf_link_hash_entry *h;
15088 int data_flag, shift, align;
15089 bfd_vma relocation;
15090 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
15091 reloc_howto_type *howto = NULL;
15093 sym_hashes = elf_sym_hashes (abfd);
15094 /* Load section instructions, relocations, and symbol table. */
15095 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
15098 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
15099 TRUE /* keep_memory */);
15100 irelend = internal_relocs + sec->reloc_count;
15101 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
15102 if (!nds32_get_local_syms (abfd, sec, &isym))
15105 /* Check the object if enable ex9. */
15106 irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend,
15107 R_NDS32_RELAX_ENTRY);
15109 /* Check this section trigger ex9 relaxation. */
15112 || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
15113 || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY
15114 && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG)))
15117 irel = internal_relocs;
15119 /* Push each insn into hash table. */
15120 while (off < sec->size)
15123 struct elf_nds32_code_hash_entry *entry;
15125 while (irel != NULL && irel < irelend && irel->r_offset < off)
15128 data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend,
15129 NULL, sec, &off, contents);
15130 if (data_flag & DATA_EXIST)
15132 /* We save the move offset in the highest byte. */
15133 off += (data_flag >> 24);
15137 if (*(contents + off) & 0x80)
15146 rel_backup.r_info = 0;
15147 rel_backup.r_offset = 0;
15148 rel_backup.r_addend = 0;
15149 /* Load the instruction and its opcode with register for comparing. */
15150 insn = bfd_getb32 (contents + off);
15152 if (irel != NULL && irel < irelend && irel->r_offset == off)
15154 nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg);
15155 howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info));
15156 shift = howto->rightshift;
15157 align = (1 << shift) - 1;
15158 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA
15159 || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA
15160 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA
15161 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA
15162 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA
15163 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA
15164 ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15165 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15166 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15167 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15168 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15169 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15170 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15171 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15173 r_symndx = ELF32_R_SYM (irel->r_info);
15175 rel_backup = *irel;
15176 if (r_symndx < symtab_hdr->sh_info)
15178 /* Local symbol. */
15179 int shndx = isym[r_symndx].st_shndx;
15181 bfd_vma st_value = (isym + r_symndx)->st_value;
15182 isec = elf_elfsections (abfd)[shndx]->bfd_section;
15183 relocation = (isec->output_section->vma + isec->output_offset
15184 + st_value + irel->r_addend);
15188 /* External symbol. */
15189 bfd_boolean warned ATTRIBUTE_UNUSED;
15190 bfd_boolean ignored ATTRIBUTE_UNUSED;
15191 bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
15194 /* Maybe there is a better way to get h and relocation */
15195 RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel,
15196 r_symndx, symtab_hdr, sym_hashes,
15197 h, sym_sec, relocation,
15198 unresolved_reloc, warned, ignored);
15199 relocation += irel->r_addend;
15200 if ((h->root.type != bfd_link_hash_defined
15201 && h->root.type != bfd_link_hash_defweak)
15202 || strcmp (h->root.root.string, "_FP_BASE_") == 0)
15209 /* Check for gp relative instruction alignment. */
15210 if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3
15211 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0)
15212 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA
15213 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA)
15214 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA
15215 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA)
15216 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA
15217 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA))
15220 bfd *output_bfd = sec->output_section->owner;
15221 bfd_reloc_status_type r;
15223 /* If the symbol is in the abs section, the out_bfd will be null.
15224 This happens when the relocation has a symbol@GOTOFF. */
15225 r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
15226 if (r != bfd_reloc_ok)
15234 /* Make sure alignment is correct. */
15235 if (relocation & align)
15237 /* Incorrect alignment. */
15239 /* xgettext:c-format */
15240 (_("%pB: warning: unaligned small data access "
15241 "for entry: {%Ld, %Ld, %Ld}, addr = %#Lx, align = %#x"),
15242 abfd, irel->r_offset,
15243 irel->r_info, irel->r_addend, relocation, align);
15249 insn = insn_with_reg
15250 | ((relocation >> shift) & nds32_elf_irel_mask (irel));
15252 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
15253 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
15254 || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
15256 /* These relocations do not have to relocate contens, so it can
15257 be regard as instruction without relocation. */
15266 snprintf (code, sizeof (code), "%08x", insn);
15268 entry = (struct elf_nds32_code_hash_entry*)
15269 bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE);
15273 (_("failed creating ex9.it %s hash table entry"), code);
15278 if (h->root.type == bfd_link_hash_undefined)
15280 /* Global symbol. */
15281 /* In order to do sethi with different symbol but same value. */
15282 if (entry->m_list == NULL)
15284 struct elf_link_hash_entry_mul_list *m_list_new;
15285 struct elf_link_hash_entry_list *h_list_new;
15287 m_list_new = (struct elf_link_hash_entry_mul_list *)
15288 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15289 h_list_new = (struct elf_link_hash_entry_list *)
15290 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15291 entry->m_list = m_list_new;
15292 m_list_new->h_list = h_list_new;
15293 m_list_new->rel_backup = rel_backup;
15294 m_list_new->times = 1;
15295 m_list_new->irel = jrel;
15296 m_list_new->next = NULL;
15298 h_list_new->next = NULL;
15302 struct elf_link_hash_entry_mul_list *m_list = entry->m_list;
15303 struct elf_link_hash_entry_list *h_list;
15307 /* Build the different symbols that point to the same address. */
15308 h_list = m_list->h_list;
15309 if (h_list->h->root.u.def.value == h->root.u.def.value
15310 && h_list->h->root.u.def.section->output_section->vma
15311 == h->root.u.def.section->output_section->vma
15312 && h_list->h->root.u.def.section->output_offset
15313 == h->root.u.def.section->output_offset
15314 && m_list->rel_backup.r_addend == rel_backup.r_addend)
15317 m_list->irel = jrel;
15318 while (h_list->h != h && h_list->next)
15319 h_list = h_list->next;
15320 if (h_list->h != h)
15322 struct elf_link_hash_entry_list *h_list_new;
15324 h_list_new = (struct elf_link_hash_entry_list *)
15325 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15326 h_list->next = h_list_new;
15328 h_list_new->next = NULL;
15332 /* The sethi case may have different address but the
15333 hi20 is the same. */
15334 else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA
15335 && m_list->next == NULL)
15337 struct elf_link_hash_entry_mul_list *m_list_new;
15338 struct elf_link_hash_entry_list *h_list_new;
15340 m_list_new = (struct elf_link_hash_entry_mul_list *)
15341 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list));
15342 h_list_new = (struct elf_link_hash_entry_list *)
15343 bfd_malloc (sizeof (struct elf_link_hash_entry_list));
15344 m_list->next = m_list_new;
15345 m_list_new->h_list = h_list_new;
15346 m_list_new->rel_backup = rel_backup;
15347 m_list_new->times = 1;
15348 m_list_new->irel = jrel;
15349 m_list_new->next = NULL;
15351 h_list_new->next = NULL;
15354 m_list = m_list->next;
15365 /* Local symbol and insn without relocation*/
15367 entry->rel_backup = rel_backup;
15370 /* Use in sethi insn with constant and global symbol in same format. */
15372 entry->const_insn = 1;
15374 entry->irel = jrel;
15382 /* Set the _ITB_BASE, and point it to ex9 table. */
15385 nds32_elf_ex9_itb_base (struct bfd_link_info *link_info)
15389 bfd *output_bfd = NULL;
15390 struct bfd_link_hash_entry *bh = NULL;
15392 if (is_ITB_BASE_set == 1)
15395 is_ITB_BASE_set = 1;
15397 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE);
15399 if (bh && (bh->type == bfd_link_hash_defined
15400 || bh->type == bfd_link_hash_defweak))
15403 for (abfd = link_info->input_bfds; abfd != NULL;
15404 abfd = abfd->link.next)
15406 sec = bfd_get_section_by_name (abfd, ".ex9.itable");
15409 output_bfd = sec->output_section->owner;
15413 if (output_bfd == NULL)
15415 output_bfd = link_info->output_bfd;
15416 if (output_bfd->sections == NULL)
15419 sec = bfd_abs_section_ptr;
15421 bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_",
15422 FALSE, FALSE, TRUE);
15423 return (_bfd_generic_link_add_one_symbol
15424 (link_info, output_bfd, "_ITB_BASE_",
15425 BSF_GLOBAL | BSF_WEAK, sec, 0,
15426 (const char *) NULL, FALSE, get_elf_backend_data
15427 (output_bfd)->collect, &bh));
15431 #define ELF_ARCH bfd_arch_nds32
15432 #define ELF_MACHINE_CODE EM_NDS32
15433 #define ELF_MAXPAGESIZE 0x1000
15434 #define ELF_TARGET_ID NDS32_ELF_DATA
15436 #define TARGET_BIG_SYM nds32_elf32_be_vec
15437 #define TARGET_BIG_NAME "elf32-nds32be"
15438 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
15439 #define TARGET_LITTLE_NAME "elf32-nds32le"
15441 #define elf_info_to_howto nds32_info_to_howto
15442 #define elf_info_to_howto_rel nds32_info_to_howto_rel
15444 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
15445 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
15446 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
15447 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
15448 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
15450 #define bfd_elf32_mkobject nds32_elf_mkobject
15451 #define elf_backend_action_discarded nds32_elf_action_discarded
15452 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
15453 #define elf_backend_check_relocs nds32_elf_check_relocs
15454 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
15455 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
15456 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
15457 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
15458 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
15459 #define elf_backend_relocate_section nds32_elf_relocate_section
15460 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
15461 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
15462 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
15463 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
15464 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
15465 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
15466 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
15467 #define elf_backend_object_p nds32_elf_object_p
15468 #define elf_backend_final_write_processing nds32_elf_final_write_processing
15469 #define elf_backend_special_sections nds32_elf_special_sections
15470 #define bfd_elf32_bfd_get_relocated_section_contents \
15471 nds32_elf_get_relocated_section_contents
15473 #define elf_backend_can_gc_sections 1
15474 #define elf_backend_can_refcount 1
15475 #define elf_backend_want_got_plt 1
15476 #define elf_backend_plt_readonly 1
15477 #define elf_backend_want_plt_sym 0
15478 #define elf_backend_got_header_size 12
15479 #define elf_backend_may_use_rel_p 1
15480 #define elf_backend_default_use_rela_p 1
15481 #define elf_backend_may_use_rela_p 1
15482 #define elf_backend_dtrel_excludes_plt 1
15484 #include "elf32-target.h"
15486 #undef ELF_MAXPAGESIZE
15487 #define ELF_MAXPAGESIZE 0x2000
15489 #undef TARGET_BIG_SYM
15490 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
15491 #undef TARGET_BIG_NAME
15492 #define TARGET_BIG_NAME "elf32-nds32be-linux"
15493 #undef TARGET_LITTLE_SYM
15494 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
15495 #undef TARGET_LITTLE_NAME
15496 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
15498 #define elf32_bed elf32_nds32_lin_bed
15500 #include "elf32-target.h"