1 /* Xilinx MicroBlaze-specific support for 32-bit ELF
3 Copyright (C) 2009-2016 Free Software Foundation, Inc.
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
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
30 #include "elf/microblaze.h"
33 #define USE_RELA /* Only USE_REL is actually significant, but this is
34 here are a reminder... */
35 #define INST_WORD_SIZE 4
37 static int ro_small_data_pointer = 0;
38 static int rw_small_data_pointer = 0;
40 static reloc_howto_type * microblaze_elf_howto_table [(int) R_MICROBLAZE_max];
42 static reloc_howto_type microblaze_elf_howto_raw[] =
44 /* This reloc does nothing. */
45 HOWTO (R_MICROBLAZE_NONE, /* Type. */
47 3, /* Size (0 = byte, 1 = short, 2 = long). */
49 FALSE, /* PC_relative. */
51 complain_overflow_dont, /* Complain on overflow. */
52 NULL, /* Special Function. */
53 "R_MICROBLAZE_NONE", /* Name. */
54 FALSE, /* Partial Inplace. */
57 FALSE), /* PC relative offset? */
59 /* A standard 32 bit relocation. */
60 HOWTO (R_MICROBLAZE_32, /* Type. */
62 2, /* Size (0 = byte, 1 = short, 2 = long). */
64 FALSE, /* PC_relative. */
66 complain_overflow_bitfield, /* Complain on overflow. */
67 bfd_elf_generic_reloc,/* Special Function. */
68 "R_MICROBLAZE_32", /* Name. */
69 FALSE, /* Partial Inplace. */
71 0xffffffff, /* Dest Mask. */
72 FALSE), /* PC relative offset? */
74 /* A standard PCREL 32 bit relocation. */
75 HOWTO (R_MICROBLAZE_32_PCREL,/* Type. */
77 2, /* Size (0 = byte, 1 = short, 2 = long). */
79 TRUE, /* PC_relative. */
81 complain_overflow_bitfield, /* Complain on overflow. */
82 bfd_elf_generic_reloc,/* Special Function. */
83 "R_MICROBLAZE_32_PCREL", /* Name. */
84 TRUE, /* Partial Inplace. */
86 0xffffffff, /* Dest Mask. */
87 TRUE), /* PC relative offset? */
89 /* A 64 bit PCREL relocation. Table-entry not really used. */
90 HOWTO (R_MICROBLAZE_64_PCREL,/* Type. */
92 2, /* Size (0 = byte, 1 = short, 2 = long). */
94 TRUE, /* PC_relative. */
96 complain_overflow_dont, /* Complain on overflow. */
97 bfd_elf_generic_reloc,/* Special Function. */
98 "R_MICROBLAZE_64_PCREL", /* Name. */
99 FALSE, /* Partial Inplace. */
100 0, /* Source Mask. */
101 0x0000ffff, /* Dest Mask. */
102 TRUE), /* PC relative offset? */
104 /* The low half of a PCREL 32 bit relocation. */
105 HOWTO (R_MICROBLAZE_32_PCREL_LO, /* Type. */
107 2, /* Size (0 = byte, 1 = short, 2 = long). */
109 TRUE, /* PC_relative. */
111 complain_overflow_signed, /* Complain on overflow. */
112 bfd_elf_generic_reloc, /* Special Function. */
113 "R_MICROBLAZE_32_PCREL_LO", /* Name. */
114 FALSE, /* Partial Inplace. */
115 0, /* Source Mask. */
116 0x0000ffff, /* Dest Mask. */
117 TRUE), /* PC relative offset? */
119 /* A 64 bit relocation. Table entry not really used. */
120 HOWTO (R_MICROBLAZE_64, /* Type. */
122 2, /* Size (0 = byte, 1 = short, 2 = long). */
124 FALSE, /* PC_relative. */
126 complain_overflow_dont, /* Complain on overflow. */
127 bfd_elf_generic_reloc,/* Special Function. */
128 "R_MICROBLAZE_64", /* Name. */
129 FALSE, /* Partial Inplace. */
130 0, /* Source Mask. */
131 0x0000ffff, /* Dest Mask. */
132 FALSE), /* PC relative offset? */
134 /* The low half of a 32 bit relocation. */
135 HOWTO (R_MICROBLAZE_32_LO, /* Type. */
137 2, /* Size (0 = byte, 1 = short, 2 = long). */
139 FALSE, /* PC_relative. */
141 complain_overflow_signed, /* Complain on overflow. */
142 bfd_elf_generic_reloc,/* Special Function. */
143 "R_MICROBLAZE_32_LO", /* Name. */
144 FALSE, /* Partial Inplace. */
145 0, /* Source Mask. */
146 0x0000ffff, /* Dest Mask. */
147 FALSE), /* PC relative offset? */
149 /* Read-only small data section relocation. */
150 HOWTO (R_MICROBLAZE_SRO32, /* Type. */
152 2, /* Size (0 = byte, 1 = short, 2 = long). */
154 FALSE, /* PC_relative. */
156 complain_overflow_bitfield, /* Complain on overflow. */
157 bfd_elf_generic_reloc,/* Special Function. */
158 "R_MICROBLAZE_SRO32", /* Name. */
159 FALSE, /* Partial Inplace. */
160 0, /* Source Mask. */
161 0x0000ffff, /* Dest Mask. */
162 FALSE), /* PC relative offset? */
164 /* Read-write small data area relocation. */
165 HOWTO (R_MICROBLAZE_SRW32, /* Type. */
167 2, /* Size (0 = byte, 1 = short, 2 = long). */
169 FALSE, /* PC_relative. */
171 complain_overflow_bitfield, /* Complain on overflow. */
172 bfd_elf_generic_reloc,/* Special Function. */
173 "R_MICROBLAZE_SRW32", /* Name. */
174 FALSE, /* Partial Inplace. */
175 0, /* Source Mask. */
176 0x0000ffff, /* Dest Mask. */
177 FALSE), /* PC relative offset? */
179 /* This reloc does nothing. Used for relaxation. */
180 HOWTO (R_MICROBLAZE_64_NONE, /* Type. */
182 3, /* Size (0 = byte, 1 = short, 2 = long). */
184 TRUE, /* PC_relative. */
186 complain_overflow_dont, /* Complain on overflow. */
187 NULL, /* Special Function. */
188 "R_MICROBLAZE_64_NONE",/* Name. */
189 FALSE, /* Partial Inplace. */
190 0, /* Source Mask. */
192 FALSE), /* PC relative offset? */
194 /* Symbol Op Symbol relocation. */
195 HOWTO (R_MICROBLAZE_32_SYM_OP_SYM, /* Type. */
197 2, /* Size (0 = byte, 1 = short, 2 = long). */
199 FALSE, /* PC_relative. */
201 complain_overflow_bitfield, /* Complain on overflow. */
202 bfd_elf_generic_reloc,/* Special Function. */
203 "R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */
204 FALSE, /* Partial Inplace. */
205 0, /* Source Mask. */
206 0xffffffff, /* Dest Mask. */
207 FALSE), /* PC relative offset? */
209 /* GNU extension to record C++ vtable hierarchy. */
210 HOWTO (R_MICROBLAZE_GNU_VTINHERIT, /* Type. */
212 2, /* Size (0 = byte, 1 = short, 2 = long). */
214 FALSE, /* PC_relative. */
216 complain_overflow_dont,/* Complain on overflow. */
217 NULL, /* Special Function. */
218 "R_MICROBLAZE_GNU_VTINHERIT", /* Name. */
219 FALSE, /* Partial Inplace. */
220 0, /* Source Mask. */
222 FALSE), /* PC relative offset? */
224 /* GNU extension to record C++ vtable member usage. */
225 HOWTO (R_MICROBLAZE_GNU_VTENTRY, /* Type. */
227 2, /* Size (0 = byte, 1 = short, 2 = long). */
229 FALSE, /* PC_relative. */
231 complain_overflow_dont,/* Complain on overflow. */
232 _bfd_elf_rel_vtable_reloc_fn, /* Special Function. */
233 "R_MICROBLAZE_GNU_VTENTRY", /* Name. */
234 FALSE, /* Partial Inplace. */
235 0, /* Source Mask. */
237 FALSE), /* PC relative offset? */
239 /* A 64 bit GOTPC relocation. Table-entry not really used. */
240 HOWTO (R_MICROBLAZE_GOTPC_64, /* Type. */
242 2, /* Size (0 = byte, 1 = short, 2 = long). */
244 TRUE, /* PC_relative. */
246 complain_overflow_dont, /* Complain on overflow. */
247 bfd_elf_generic_reloc, /* Special Function. */
248 "R_MICROBLAZE_GOTPC_64", /* Name. */
249 FALSE, /* Partial Inplace. */
250 0, /* Source Mask. */
251 0x0000ffff, /* Dest Mask. */
252 TRUE), /* PC relative offset? */
254 /* A 64 bit GOT relocation. Table-entry not really used. */
255 HOWTO (R_MICROBLAZE_GOT_64, /* Type. */
257 2, /* Size (0 = byte, 1 = short, 2 = long). */
259 FALSE, /* PC_relative. */
261 complain_overflow_dont, /* Complain on overflow. */
262 bfd_elf_generic_reloc,/* Special Function. */
263 "R_MICROBLAZE_GOT_64",/* Name. */
264 FALSE, /* Partial Inplace. */
265 0, /* Source Mask. */
266 0x0000ffff, /* Dest Mask. */
267 FALSE), /* PC relative offset? */
269 /* A 64 bit PLT relocation. Table-entry not really used. */
270 HOWTO (R_MICROBLAZE_PLT_64, /* Type. */
272 2, /* Size (0 = byte, 1 = short, 2 = long). */
274 TRUE, /* PC_relative. */
276 complain_overflow_dont, /* Complain on overflow. */
277 bfd_elf_generic_reloc,/* Special Function. */
278 "R_MICROBLAZE_PLT_64",/* Name. */
279 FALSE, /* Partial Inplace. */
280 0, /* Source Mask. */
281 0x0000ffff, /* Dest Mask. */
282 TRUE), /* PC relative offset? */
284 /* Table-entry not really used. */
285 HOWTO (R_MICROBLAZE_REL, /* Type. */
287 2, /* Size (0 = byte, 1 = short, 2 = long). */
289 TRUE, /* PC_relative. */
291 complain_overflow_dont, /* Complain on overflow. */
292 bfd_elf_generic_reloc,/* Special Function. */
293 "R_MICROBLAZE_REL", /* Name. */
294 FALSE, /* Partial Inplace. */
295 0, /* Source Mask. */
296 0x0000ffff, /* Dest Mask. */
297 TRUE), /* PC relative offset? */
299 /* Table-entry not really used. */
300 HOWTO (R_MICROBLAZE_JUMP_SLOT,/* Type. */
302 2, /* Size (0 = byte, 1 = short, 2 = long). */
304 TRUE, /* PC_relative. */
306 complain_overflow_dont, /* Complain on overflow. */
307 bfd_elf_generic_reloc,/* Special Function. */
308 "R_MICROBLAZE_JUMP_SLOT", /* Name. */
309 FALSE, /* Partial Inplace. */
310 0, /* Source Mask. */
311 0x0000ffff, /* Dest Mask. */
312 TRUE), /* PC relative offset? */
314 /* Table-entry not really used. */
315 HOWTO (R_MICROBLAZE_GLOB_DAT,/* Type. */
317 2, /* Size (0 = byte, 1 = short, 2 = long). */
319 TRUE, /* PC_relative. */
321 complain_overflow_dont, /* Complain on overflow. */
322 bfd_elf_generic_reloc,/* Special Function. */
323 "R_MICROBLAZE_GLOB_DAT", /* Name. */
324 FALSE, /* Partial Inplace. */
325 0, /* Source Mask. */
326 0x0000ffff, /* Dest Mask. */
327 TRUE), /* PC relative offset? */
329 /* A 64 bit GOT relative relocation. Table-entry not really used. */
330 HOWTO (R_MICROBLAZE_GOTOFF_64, /* Type. */
332 2, /* Size (0 = byte, 1 = short, 2 = long). */
334 FALSE, /* PC_relative. */
336 complain_overflow_dont, /* Complain on overflow. */
337 bfd_elf_generic_reloc,/* Special Function. */
338 "R_MICROBLAZE_GOTOFF_64", /* Name. */
339 FALSE, /* Partial Inplace. */
340 0, /* Source Mask. */
341 0x0000ffff, /* Dest Mask. */
342 FALSE), /* PC relative offset? */
344 /* A 32 bit GOT relative relocation. Table-entry not really used. */
345 HOWTO (R_MICROBLAZE_GOTOFF_32, /* Type. */
347 2, /* Size (0 = byte, 1 = short, 2 = long). */
349 FALSE, /* PC_relative. */
351 complain_overflow_dont, /* Complain on overflow. */
352 bfd_elf_generic_reloc, /* Special Function. */
353 "R_MICROBLAZE_GOTOFF_32", /* Name. */
354 FALSE, /* Partial Inplace. */
355 0, /* Source Mask. */
356 0x0000ffff, /* Dest Mask. */
357 FALSE), /* PC relative offset? */
359 /* COPY relocation. Table-entry not really used. */
360 HOWTO (R_MICROBLAZE_COPY, /* Type. */
362 2, /* Size (0 = byte, 1 = short, 2 = long). */
364 FALSE, /* PC_relative. */
366 complain_overflow_dont, /* Complain on overflow. */
367 bfd_elf_generic_reloc,/* Special Function. */
368 "R_MICROBLAZE_COPY", /* Name. */
369 FALSE, /* Partial Inplace. */
370 0, /* Source Mask. */
371 0x0000ffff, /* Dest Mask. */
372 FALSE), /* PC relative offset? */
374 /* Marker relocs for TLS. */
375 HOWTO (R_MICROBLAZE_TLS,
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE, /* pc_relative */
381 complain_overflow_dont, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_MICROBLAZE_TLS", /* name */
384 FALSE, /* partial_inplace */
386 0x0000ffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
389 HOWTO (R_MICROBLAZE_TLSGD,
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_dont, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_MICROBLAZE_TLSGD", /* name */
398 FALSE, /* partial_inplace */
400 0x0000ffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 HOWTO (R_MICROBLAZE_TLSLD,
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE, /* pc_relative */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_MICROBLAZE_TLSLD", /* name */
412 FALSE, /* partial_inplace */
414 0x0000ffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
417 /* Computes the load module index of the load module that contains the
418 definition of its TLS sym. */
419 HOWTO (R_MICROBLAZE_TLSDTPMOD32,
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_dont, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_MICROBLAZE_TLSDTPMOD32", /* name */
428 FALSE, /* partial_inplace */
430 0x0000ffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 /* Computes a dtv-relative displacement, the difference between the value
434 of sym+add and the base address of the thread-local storage block that
435 contains the definition of sym, minus 0x8000. Used for initializing GOT */
436 HOWTO (R_MICROBLAZE_TLSDTPREL32,
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE, /* pc_relative */
442 complain_overflow_dont, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_MICROBLAZE_TLSDTPREL32", /* name */
445 FALSE, /* partial_inplace */
447 0x0000ffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
450 /* Computes a dtv-relative displacement, the difference between the value
451 of sym+add and the base address of the thread-local storage block that
452 contains the definition of sym, minus 0x8000. */
453 HOWTO (R_MICROBLAZE_TLSDTPREL64,
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 FALSE, /* pc_relative */
459 complain_overflow_dont, /* complain_on_overflow */
460 bfd_elf_generic_reloc, /* special_function */
461 "R_MICROBLAZE_TLSDTPREL64", /* name */
462 FALSE, /* partial_inplace */
464 0x0000ffff, /* dst_mask */
465 FALSE), /* pcrel_offset */
467 /* Computes a tp-relative displacement, the difference between the value of
468 sym+add and the value of the thread pointer (r13). */
469 HOWTO (R_MICROBLAZE_TLSGOTTPREL32,
471 2, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE, /* pc_relative */
475 complain_overflow_dont, /* complain_on_overflow */
476 bfd_elf_generic_reloc, /* special_function */
477 "R_MICROBLAZE_TLSGOTTPREL32", /* name */
478 FALSE, /* partial_inplace */
480 0x0000ffff, /* dst_mask */
481 FALSE), /* pcrel_offset */
483 /* Computes a tp-relative displacement, the difference between the value of
484 sym+add and the value of the thread pointer (r13). */
485 HOWTO (R_MICROBLAZE_TLSTPREL32,
487 2, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_dont, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_MICROBLAZE_TLSTPREL32", /* name */
494 FALSE, /* partial_inplace */
496 0x0000ffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
502 #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
505 /* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */
508 microblaze_elf_howto_init (void)
512 for (i = NUM_ELEM (microblaze_elf_howto_raw); i--;)
516 type = microblaze_elf_howto_raw[i].type;
518 BFD_ASSERT (type < NUM_ELEM (microblaze_elf_howto_table));
520 microblaze_elf_howto_table [type] = & microblaze_elf_howto_raw [i];
524 static reloc_howto_type *
525 microblaze_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
526 bfd_reloc_code_real_type code)
528 enum elf_microblaze_reloc_type microblaze_reloc = R_MICROBLAZE_NONE;
533 microblaze_reloc = R_MICROBLAZE_NONE;
535 case BFD_RELOC_MICROBLAZE_64_NONE:
536 microblaze_reloc = R_MICROBLAZE_64_NONE;
539 microblaze_reloc = R_MICROBLAZE_32;
541 /* RVA is treated the same as 32 */
543 microblaze_reloc = R_MICROBLAZE_32;
545 case BFD_RELOC_32_PCREL:
546 microblaze_reloc = R_MICROBLAZE_32_PCREL;
548 case BFD_RELOC_64_PCREL:
549 microblaze_reloc = R_MICROBLAZE_64_PCREL;
551 case BFD_RELOC_MICROBLAZE_32_LO_PCREL:
552 microblaze_reloc = R_MICROBLAZE_32_PCREL_LO;
555 microblaze_reloc = R_MICROBLAZE_64;
557 case BFD_RELOC_MICROBLAZE_32_LO:
558 microblaze_reloc = R_MICROBLAZE_32_LO;
560 case BFD_RELOC_MICROBLAZE_32_ROSDA:
561 microblaze_reloc = R_MICROBLAZE_SRO32;
563 case BFD_RELOC_MICROBLAZE_32_RWSDA:
564 microblaze_reloc = R_MICROBLAZE_SRW32;
566 case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM:
567 microblaze_reloc = R_MICROBLAZE_32_SYM_OP_SYM;
569 case BFD_RELOC_VTABLE_INHERIT:
570 microblaze_reloc = R_MICROBLAZE_GNU_VTINHERIT;
572 case BFD_RELOC_VTABLE_ENTRY:
573 microblaze_reloc = R_MICROBLAZE_GNU_VTENTRY;
575 case BFD_RELOC_MICROBLAZE_64_GOTPC:
576 microblaze_reloc = R_MICROBLAZE_GOTPC_64;
578 case BFD_RELOC_MICROBLAZE_64_GOT:
579 microblaze_reloc = R_MICROBLAZE_GOT_64;
581 case BFD_RELOC_MICROBLAZE_64_PLT:
582 microblaze_reloc = R_MICROBLAZE_PLT_64;
584 case BFD_RELOC_MICROBLAZE_64_GOTOFF:
585 microblaze_reloc = R_MICROBLAZE_GOTOFF_64;
587 case BFD_RELOC_MICROBLAZE_32_GOTOFF:
588 microblaze_reloc = R_MICROBLAZE_GOTOFF_32;
590 case BFD_RELOC_MICROBLAZE_64_TLSGD:
591 microblaze_reloc = R_MICROBLAZE_TLSGD;
593 case BFD_RELOC_MICROBLAZE_64_TLSLD:
594 microblaze_reloc = R_MICROBLAZE_TLSLD;
596 case BFD_RELOC_MICROBLAZE_32_TLSDTPREL:
597 microblaze_reloc = R_MICROBLAZE_TLSDTPREL32;
599 case BFD_RELOC_MICROBLAZE_64_TLSDTPREL:
600 microblaze_reloc = R_MICROBLAZE_TLSDTPREL64;
602 case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD:
603 microblaze_reloc = R_MICROBLAZE_TLSDTPMOD32;
605 case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL:
606 microblaze_reloc = R_MICROBLAZE_TLSGOTTPREL32;
608 case BFD_RELOC_MICROBLAZE_64_TLSTPREL:
609 microblaze_reloc = R_MICROBLAZE_TLSTPREL32;
611 case BFD_RELOC_MICROBLAZE_COPY:
612 microblaze_reloc = R_MICROBLAZE_COPY;
615 return (reloc_howto_type *) NULL;
618 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
619 /* Initialize howto table if needed. */
620 microblaze_elf_howto_init ();
622 return microblaze_elf_howto_table [(int) microblaze_reloc];
625 static reloc_howto_type *
626 microblaze_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
631 for (i = 0; i < NUM_ELEM (microblaze_elf_howto_raw); i++)
632 if (microblaze_elf_howto_raw[i].name != NULL
633 && strcasecmp (microblaze_elf_howto_raw[i].name, r_name) == 0)
634 return µblaze_elf_howto_raw[i];
639 /* Set the howto pointer for a RCE ELF reloc. */
642 microblaze_elf_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
644 Elf_Internal_Rela * dst)
648 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
649 /* Initialize howto table if needed. */
650 microblaze_elf_howto_init ();
652 r_type = ELF32_R_TYPE (dst->r_info);
653 if (r_type >= R_MICROBLAZE_max)
655 /* xgettext:c-format */
656 _bfd_error_handler (_("%B: unrecognised MicroBlaze reloc number: %d"),
658 bfd_set_error (bfd_error_bad_value);
659 r_type = R_MICROBLAZE_NONE;
662 cache_ptr->howto = microblaze_elf_howto_table [r_type];
665 /* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */
668 microblaze_elf_is_local_label_name (bfd *abfd, const char *name)
670 if (name[0] == 'L' && name[1] == '.')
673 if (name[0] == '$' && name[1] == 'L')
676 /* With gcc, the labels go back to starting with '.', so we accept
677 the generic ELF local label syntax as well. */
678 return _bfd_elf_is_local_label_name (abfd, name);
681 /* The microblaze linker (like many others) needs to keep track of
682 the number of relocs that it decides to copy as dynamic relocs in
683 check_relocs for each symbol. This is so that it can later discard
684 them if they are found to be unnecessary. We store the information
685 in a field extending the regular ELF linker hash table. */
687 struct elf32_mb_dyn_relocs
689 struct elf32_mb_dyn_relocs *next;
691 /* The input section of the reloc. */
694 /* Total number of relocs copied for the input section. */
697 /* Number of pc-relative relocs copied for the input section. */
698 bfd_size_type pc_count;
701 /* ELF linker hash entry. */
703 struct elf32_mb_link_hash_entry
705 struct elf_link_hash_entry elf;
707 /* Track dynamic relocs copied for this symbol. */
708 struct elf32_mb_dyn_relocs *dyn_relocs;
710 /* TLS Reference Types for the symbol; Updated by check_relocs */
711 #define TLS_GD 1 /* GD reloc. */
712 #define TLS_LD 2 /* LD reloc. */
713 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
714 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
715 #define TLS_TLS 16 /* Any TLS reloc. */
716 unsigned char tls_mask;
720 #define IS_TLS_GD(x) (x == (TLS_TLS | TLS_GD))
721 #define IS_TLS_LD(x) (x == (TLS_TLS | TLS_LD))
722 #define IS_TLS_DTPREL(x) (x == (TLS_TLS | TLS_DTPREL))
723 #define IS_TLS_NONE(x) (x == 0)
725 #define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent))
727 /* ELF linker hash table. */
729 struct elf32_mb_link_hash_table
731 struct elf_link_hash_table elf;
733 /* Short-cuts to get to dynamic linker sections. */
737 /* Small local sym to section mapping cache. */
738 struct sym_cache sym_sec;
740 /* TLS Local Dynamic GOT Entry */
742 bfd_signed_vma refcount;
747 /* Nonzero if this section has TLS related relocations. */
748 #define has_tls_reloc sec_flg0
750 /* Get the ELF linker hash table from a link_info structure. */
752 #define elf32_mb_hash_table(p) \
753 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
754 == MICROBLAZE_ELF_DATA ? ((struct elf32_mb_link_hash_table *) ((p)->hash)) : NULL)
756 /* Create an entry in a microblaze ELF linker hash table. */
758 static struct bfd_hash_entry *
759 link_hash_newfunc (struct bfd_hash_entry *entry,
760 struct bfd_hash_table *table,
763 /* Allocate the structure if it has not already been allocated by a
767 entry = bfd_hash_allocate (table,
768 sizeof (struct elf32_mb_link_hash_entry));
773 /* Call the allocation method of the superclass. */
774 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
777 struct elf32_mb_link_hash_entry *eh;
779 eh = (struct elf32_mb_link_hash_entry *) entry;
780 eh->dyn_relocs = NULL;
787 /* Create a mb ELF linker hash table. */
789 static struct bfd_link_hash_table *
790 microblaze_elf_link_hash_table_create (bfd *abfd)
792 struct elf32_mb_link_hash_table *ret;
793 bfd_size_type amt = sizeof (struct elf32_mb_link_hash_table);
795 ret = (struct elf32_mb_link_hash_table *) bfd_zmalloc (amt);
799 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
800 sizeof (struct elf32_mb_link_hash_entry),
801 MICROBLAZE_ELF_DATA))
807 return &ret->elf.root;
810 /* Set the values of the small data pointers. */
813 microblaze_elf_final_sdp (struct bfd_link_info *info)
815 struct bfd_link_hash_entry *h;
817 h = bfd_link_hash_lookup (info->hash, RO_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
818 if (h != (struct bfd_link_hash_entry *) NULL
819 && h->type == bfd_link_hash_defined)
820 ro_small_data_pointer = (h->u.def.value
821 + h->u.def.section->output_section->vma
822 + h->u.def.section->output_offset);
824 h = bfd_link_hash_lookup (info->hash, RW_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
825 if (h != (struct bfd_link_hash_entry *) NULL
826 && h->type == bfd_link_hash_defined)
827 rw_small_data_pointer = (h->u.def.value
828 + h->u.def.section->output_section->vma
829 + h->u.def.section->output_offset);
833 dtprel_base (struct bfd_link_info *info)
835 /* If tls_sec is NULL, we should have signalled an error already. */
836 if (elf_hash_table (info)->tls_sec == NULL)
838 return elf_hash_table (info)->tls_sec->vma;
841 /* The size of the thread control block. */
844 /* Output a simple dynamic relocation into SRELOC. */
847 microblaze_elf_output_dynamic_relocation (bfd *output_bfd,
849 unsigned long reloc_index,
856 Elf_Internal_Rela rel;
858 rel.r_info = ELF32_R_INFO (indx, r_type);
859 rel.r_offset = offset;
860 rel.r_addend = addend;
862 bfd_elf32_swap_reloca_out (output_bfd, &rel,
863 (sreloc->contents + reloc_index * sizeof (Elf32_External_Rela)));
866 /* This code is taken from elf32-m32r.c
867 There is some attempt to make this function usable for many architectures,
868 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
869 if only to serve as a learning tool.
871 The RELOCATE_SECTION function is called by the new ELF backend linker
872 to handle the relocations for a section.
874 The relocs are always passed as Rela structures; if the section
875 actually uses Rel structures, the r_addend field will always be
878 This function is responsible for adjust the section contents as
879 necessary, and (if using Rela relocs and generating a
880 relocatable output file) adjusting the reloc addend as
883 This function does not have to worry about setting the reloc
884 address or the reloc symbol index.
886 LOCAL_SYMS is a pointer to the swapped in local symbols.
888 LOCAL_SECTIONS is an array giving the section in the input file
889 corresponding to the st_shndx field of each local symbol.
891 The global hash table entry for the global symbols can be found
892 via elf_sym_hashes (input_bfd).
894 When generating relocatable output, this function must handle
895 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
896 going to be the section symbol corresponding to the output
897 section, which means that the addend must be adjusted
901 microblaze_elf_relocate_section (bfd *output_bfd,
902 struct bfd_link_info *info,
904 asection *input_section,
906 Elf_Internal_Rela *relocs,
907 Elf_Internal_Sym *local_syms,
908 asection **local_sections)
910 struct elf32_mb_link_hash_table *htab;
911 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
912 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
913 Elf_Internal_Rela *rel, *relend;
914 int endian = (bfd_little_endian (output_bfd)) ? 0 : 2;
915 /* Assume success. */
916 bfd_boolean ret = TRUE;
918 bfd_vma *local_got_offsets;
919 unsigned int tls_type;
921 if (!microblaze_elf_howto_table[R_MICROBLAZE_max-1])
922 microblaze_elf_howto_init ();
924 htab = elf32_mb_hash_table (info);
928 local_got_offsets = elf_local_got_offsets (input_bfd);
930 sreloc = elf_section_data (input_section)->sreloc;
933 relend = relocs + input_section->reloc_count;
934 for (; rel < relend; rel++)
937 reloc_howto_type *howto;
938 unsigned long r_symndx;
939 bfd_vma addend = rel->r_addend;
940 bfd_vma offset = rel->r_offset;
941 struct elf_link_hash_entry *h;
942 Elf_Internal_Sym *sym;
944 const char *sym_name;
945 bfd_reloc_status_type r = bfd_reloc_ok;
946 const char *errmsg = NULL;
947 bfd_boolean unresolved_reloc = FALSE;
950 r_type = ELF32_R_TYPE (rel->r_info);
953 if (r_type < 0 || r_type >= (int) R_MICROBLAZE_max)
955 /* xgettext:c-format */
956 _bfd_error_handler (_("%s: unknown relocation type %d"),
957 bfd_get_filename (input_bfd), (int) r_type);
958 bfd_set_error (bfd_error_bad_value);
963 howto = microblaze_elf_howto_table[r_type];
964 r_symndx = ELF32_R_SYM (rel->r_info);
966 if (bfd_link_relocatable (info))
968 /* This is a relocatable link. We don't have to change
969 anything, unless the reloc is against a section symbol,
970 in which case we have to adjust according to where the
971 section symbol winds up in the output section. */
973 if (r_symndx >= symtab_hdr->sh_info)
974 /* External symbol. */
978 sym = local_syms + r_symndx;
979 sym_name = "<local symbol>";
980 /* STT_SECTION: symbol is associated with a section. */
981 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
982 /* Symbol isn't associated with a section. Nothing to do. */
985 sec = local_sections[r_symndx];
986 addend += sec->output_offset + sym->st_value;
988 /* This can't be done for USE_REL because it doesn't mean anything
989 and elf_link_input_bfd asserts this stays zero. */
990 /* rel->r_addend = addend; */
994 /* Addends are stored with relocs. We're done. */
997 /* If partial_inplace, we need to store any additional addend
998 back in the section. */
999 if (!howto->partial_inplace)
1001 /* ??? Here is a nice place to call a special_function like handler. */
1002 r = _bfd_relocate_contents (howto, input_bfd, addend,
1004 #endif /* USE_REL */
1010 /* This is a final link. */
1013 unresolved_reloc = FALSE;
1015 if (r_symndx < symtab_hdr->sh_info)
1018 sym = local_syms + r_symndx;
1019 sec = local_sections[r_symndx];
1022 sym_name = "<local symbol>";
1023 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1024 /* r_addend may have changed if the reference section was
1026 addend = rel->r_addend;
1030 /* External symbol. */
1031 bfd_boolean warned ATTRIBUTE_UNUSED;
1032 bfd_boolean ignored ATTRIBUTE_UNUSED;
1034 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1035 r_symndx, symtab_hdr, sym_hashes,
1037 unresolved_reloc, warned, ignored);
1038 sym_name = h->root.root.string;
1041 /* Sanity check the address. */
1042 if (offset > bfd_get_section_limit (input_bfd, input_section))
1044 r = bfd_reloc_outofrange;
1048 switch ((int) r_type)
1050 case (int) R_MICROBLAZE_SRO32 :
1054 /* Only relocate if the symbol is defined. */
1057 name = bfd_get_section_name (sec->owner, sec);
1059 if (strcmp (name, ".sdata2") == 0
1060 || strcmp (name, ".sbss2") == 0)
1062 if (ro_small_data_pointer == 0)
1063 microblaze_elf_final_sdp (info);
1064 if (ro_small_data_pointer == 0)
1067 r = bfd_reloc_undefined;
1071 /* At this point `relocation' contains the object's
1073 relocation -= ro_small_data_pointer;
1074 /* Now it contains the offset from _SDA2_BASE_. */
1075 r = _bfd_final_link_relocate (howto, input_bfd,
1078 relocation, addend);
1083 /* xgettext:c-format */
1084 (_("%s: The target (%s) of an %s relocation "
1085 "is in the wrong section (%s)"),
1086 bfd_get_filename (input_bfd),
1088 microblaze_elf_howto_table[(int) r_type]->name,
1089 bfd_get_section_name (sec->owner, sec));
1090 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1098 case (int) R_MICROBLAZE_SRW32 :
1102 /* Only relocate if the symbol is defined. */
1105 name = bfd_get_section_name (sec->owner, sec);
1107 if (strcmp (name, ".sdata") == 0
1108 || strcmp (name, ".sbss") == 0)
1110 if (rw_small_data_pointer == 0)
1111 microblaze_elf_final_sdp (info);
1112 if (rw_small_data_pointer == 0)
1115 r = bfd_reloc_undefined;
1119 /* At this point `relocation' contains the object's
1121 relocation -= rw_small_data_pointer;
1122 /* Now it contains the offset from _SDA_BASE_. */
1123 r = _bfd_final_link_relocate (howto, input_bfd,
1126 relocation, addend);
1131 /* xgettext:c-format */
1132 (_("%s: The target (%s) of an %s relocation "
1133 "is in the wrong section (%s)"),
1134 bfd_get_filename (input_bfd),
1136 microblaze_elf_howto_table[(int) r_type]->name,
1137 bfd_get_section_name (sec->owner, sec));
1138 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1146 case (int) R_MICROBLAZE_32_SYM_OP_SYM:
1147 break; /* Do nothing. */
1149 case (int) R_MICROBLAZE_GOTPC_64:
1150 relocation = (htab->elf.sgotplt->output_section->vma
1151 + htab->elf.sgotplt->output_offset);
1152 relocation -= (input_section->output_section->vma
1153 + input_section->output_offset
1154 + offset + INST_WORD_SIZE);
1155 relocation += addend;
1156 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1157 contents + offset + endian);
1158 bfd_put_16 (input_bfd, relocation & 0xffff,
1159 contents + offset + endian + INST_WORD_SIZE);
1162 case (int) R_MICROBLAZE_PLT_64:
1165 if (htab->elf.splt != NULL && h != NULL
1166 && h->plt.offset != (bfd_vma) -1)
1168 relocation = (htab->elf.splt->output_section->vma
1169 + htab->elf.splt->output_offset
1171 unresolved_reloc = FALSE;
1172 immediate = relocation - (input_section->output_section->vma
1173 + input_section->output_offset
1174 + offset + INST_WORD_SIZE);
1175 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
1176 contents + offset + endian);
1177 bfd_put_16 (input_bfd, immediate & 0xffff,
1178 contents + offset + endian + INST_WORD_SIZE);
1182 relocation -= (input_section->output_section->vma
1183 + input_section->output_offset
1184 + offset + INST_WORD_SIZE);
1185 immediate = relocation;
1186 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
1187 contents + offset + endian);
1188 bfd_put_16 (input_bfd, immediate & 0xffff,
1189 contents + offset + endian + INST_WORD_SIZE);
1194 case (int) R_MICROBLAZE_TLSGD:
1195 tls_type = (TLS_TLS | TLS_GD);
1197 case (int) R_MICROBLAZE_TLSLD:
1198 tls_type = (TLS_TLS | TLS_LD);
1201 case (int) R_MICROBLAZE_GOT_64:
1206 bfd_vma static_value;
1208 bfd_boolean need_relocs = FALSE;
1209 if (htab->elf.sgot == NULL)
1215 /* 1. Identify GOT Offset;
1216 2. Compute Static Values
1217 3. Process Module Id, Process Offset
1218 4. Fixup Relocation with GOT offset value. */
1220 /* 1. Determine GOT Offset to use : TLS_LD, global, local */
1221 if (IS_TLS_LD (tls_type))
1222 offp = &htab->tlsld_got.offset;
1225 if (htab->elf.sgotplt != NULL
1226 && h->got.offset != (bfd_vma) -1)
1227 offp = &h->got.offset;
1233 if (local_got_offsets == NULL)
1235 offp = &local_got_offsets[r_symndx];
1244 if (IS_TLS_LD(tls_type) || IS_TLS_GD(tls_type))
1247 /* Symbol index to use for relocs */
1251 elf_hash_table (info)->dynamic_sections_created;
1253 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1254 bfd_link_pic (info),
1256 && (!bfd_link_pic (info)
1257 || !SYMBOL_REFERENCES_LOCAL (info, h)))
1261 /* Need to generate relocs ? */
1262 if ((bfd_link_pic (info) || indx != 0)
1264 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1265 || h->root.type != bfd_link_hash_undefweak))
1268 /* 2. Compute/Emit Static value of r-expression */
1269 static_value = relocation + addend;
1271 /* 3. Process module-id and offset */
1272 if (! ((*offp) & 1) )
1276 got_offset = (htab->elf.sgot->output_section->vma
1277 + htab->elf.sgot->output_offset
1280 /* Process module-id */
1281 if (IS_TLS_LD(tls_type))
1283 if (! bfd_link_pic (info))
1284 bfd_put_32 (output_bfd, 1,
1285 htab->elf.sgot->contents + off);
1287 microblaze_elf_output_dynamic_relocation
1290 htab->elf.srelgot->reloc_count++,
1291 /* symindex= */ 0, R_MICROBLAZE_TLSDTPMOD32,
1294 else if (IS_TLS_GD(tls_type))
1297 bfd_put_32 (output_bfd, 1,
1298 htab->elf.sgot->contents + off);
1300 microblaze_elf_output_dynamic_relocation
1303 htab->elf.srelgot->reloc_count++,
1304 /* symindex= */ indx, R_MICROBLAZE_TLSDTPMOD32,
1305 got_offset, indx ? 0 : static_value);
1308 /* Process Offset */
1309 if (htab->elf.srelgot == NULL)
1312 got_offset = (htab->elf.sgot->output_section->vma
1313 + htab->elf.sgot->output_offset
1315 if (IS_TLS_LD(tls_type))
1317 /* For LD, offset should be 0 */
1319 bfd_put_32 (output_bfd, 0,
1320 htab->elf.sgot->contents + off2);
1322 else if (IS_TLS_GD(tls_type))
1325 static_value -= dtprel_base(info);
1327 microblaze_elf_output_dynamic_relocation
1330 htab->elf.srelgot->reloc_count++,
1331 /* symindex= */ indx, R_MICROBLAZE_TLSDTPREL32,
1332 got_offset, indx ? 0 : static_value);
1334 bfd_put_32 (output_bfd, static_value,
1335 htab->elf.sgot->contents + off2);
1339 bfd_put_32 (output_bfd, static_value,
1340 htab->elf.sgot->contents + off2);
1342 /* Relocs for dyn symbols generated by
1343 finish_dynamic_symbols */
1344 if (bfd_link_pic (info) && h == NULL)
1347 microblaze_elf_output_dynamic_relocation
1350 htab->elf.srelgot->reloc_count++,
1351 /* symindex= */ indx, R_MICROBLAZE_REL,
1352 got_offset, static_value);
1357 /* 4. Fixup Relocation with GOT offset value
1358 Compute relative address of GOT entry for applying
1359 the current relocation */
1360 relocation = htab->elf.sgot->output_section->vma
1361 + htab->elf.sgot->output_offset
1363 - htab->elf.sgotplt->output_section->vma
1364 - htab->elf.sgotplt->output_offset;
1366 /* Apply Current Relocation */
1367 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1368 contents + offset + endian);
1369 bfd_put_16 (input_bfd, relocation & 0xffff,
1370 contents + offset + endian + INST_WORD_SIZE);
1372 unresolved_reloc = FALSE;
1376 case (int) R_MICROBLAZE_GOTOFF_64:
1379 unsigned short lo, high;
1380 relocation += addend;
1381 relocation -= (htab->elf.sgotplt->output_section->vma
1382 + htab->elf.sgotplt->output_offset);
1383 /* Write this value into correct location. */
1384 immediate = relocation;
1385 lo = immediate & 0x0000ffff;
1386 high = (immediate >> 16) & 0x0000ffff;
1387 bfd_put_16 (input_bfd, high, contents + offset + endian);
1388 bfd_put_16 (input_bfd, lo,
1389 contents + offset + INST_WORD_SIZE + endian);
1393 case (int) R_MICROBLAZE_GOTOFF_32:
1395 relocation += addend;
1396 relocation -= (htab->elf.sgotplt->output_section->vma
1397 + htab->elf.sgotplt->output_offset);
1398 /* Write this value into correct location. */
1399 bfd_put_32 (input_bfd, relocation, contents + offset);
1403 case (int) R_MICROBLAZE_TLSDTPREL64:
1404 relocation += addend;
1405 relocation -= dtprel_base(info);
1406 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1407 contents + offset + 2);
1408 bfd_put_16 (input_bfd, relocation & 0xffff,
1409 contents + offset + 2 + INST_WORD_SIZE);
1411 case (int) R_MICROBLAZE_64_PCREL :
1412 case (int) R_MICROBLAZE_64:
1413 case (int) R_MICROBLAZE_32:
1415 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1416 from removed linkonce sections, or sections discarded by
1418 if (r_symndx == STN_UNDEF || (input_section->flags & SEC_ALLOC) == 0)
1420 relocation += addend;
1421 if (r_type == R_MICROBLAZE_32)
1422 bfd_put_32 (input_bfd, relocation, contents + offset);
1425 if (r_type == R_MICROBLAZE_64_PCREL)
1426 relocation -= (input_section->output_section->vma
1427 + input_section->output_offset
1428 + offset + INST_WORD_SIZE);
1429 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1430 contents + offset + endian);
1431 bfd_put_16 (input_bfd, relocation & 0xffff,
1432 contents + offset + endian + INST_WORD_SIZE);
1437 if ((bfd_link_pic (info)
1439 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1440 || h->root.type != bfd_link_hash_undefweak)
1441 && (!howto->pc_relative
1445 || !h->def_regular))))
1446 || (!bfd_link_pic (info)
1452 || h->root.type == bfd_link_hash_undefweak
1453 || h->root.type == bfd_link_hash_undefined)))
1455 Elf_Internal_Rela outrel;
1459 /* When generating a shared object, these relocations
1460 are copied into the output file to be resolved at run
1463 BFD_ASSERT (sreloc != NULL);
1468 _bfd_elf_section_offset (output_bfd, info, input_section,
1470 if (outrel.r_offset == (bfd_vma) -1)
1472 else if (outrel.r_offset == (bfd_vma) -2)
1474 outrel.r_offset += (input_section->output_section->vma
1475 + input_section->output_offset);
1478 memset (&outrel, 0, sizeof outrel);
1479 /* h->dynindx may be -1 if the symbol was marked to
1482 && ((! info->symbolic && h->dynindx != -1)
1483 || !h->def_regular))
1485 BFD_ASSERT (h->dynindx != -1);
1486 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1487 outrel.r_addend = addend;
1491 if (r_type == R_MICROBLAZE_32)
1493 outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
1494 outrel.r_addend = relocation + addend;
1500 (_("%B: probably compiled without -fPIC?"),
1502 bfd_set_error (bfd_error_bad_value);
1507 loc = sreloc->contents;
1508 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1509 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1514 relocation += addend;
1515 if (r_type == R_MICROBLAZE_32)
1516 bfd_put_32 (input_bfd, relocation, contents + offset);
1519 if (r_type == R_MICROBLAZE_64_PCREL)
1520 relocation -= (input_section->output_section->vma
1521 + input_section->output_offset
1522 + offset + INST_WORD_SIZE);
1523 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1524 contents + offset + endian);
1525 bfd_put_16 (input_bfd, relocation & 0xffff,
1526 contents + offset + endian + INST_WORD_SIZE);
1533 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1535 relocation, addend);
1542 if (r != bfd_reloc_ok)
1544 /* FIXME: This should be generic enough to go in a utility. */
1548 name = h->root.root.string;
1551 name = (bfd_elf_string_from_elf_section
1552 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1553 if (name == NULL || *name == '\0')
1554 name = bfd_section_name (input_bfd, sec);
1562 case bfd_reloc_overflow:
1563 (*info->callbacks->reloc_overflow)
1564 (info, (h ? &h->root : NULL), name, howto->name,
1565 (bfd_vma) 0, input_bfd, input_section, offset);
1568 case bfd_reloc_undefined:
1569 (*info->callbacks->undefined_symbol)
1570 (info, name, input_bfd, input_section, offset, TRUE);
1573 case bfd_reloc_outofrange:
1574 errmsg = _("internal error: out of range error");
1577 case bfd_reloc_notsupported:
1578 errmsg = _("internal error: unsupported relocation error");
1581 case bfd_reloc_dangerous:
1582 errmsg = _("internal error: dangerous error");
1586 errmsg = _("internal error: unknown error");
1589 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
1590 input_section, offset);
1599 /* Calculate fixup value for reference. */
1602 calc_fixup (bfd_vma start, bfd_vma size, asection *sec)
1604 bfd_vma end = start + size;
1607 if (sec == NULL || sec->relax == NULL)
1610 /* Look for addr in relax table, total fixup value. */
1611 for (i = 0; i < sec->relax_count; i++)
1613 if (end <= sec->relax[i].addr)
1615 if ((end != start) && (start > sec->relax[i].addr))
1617 fixup += sec->relax[i].size;
1622 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1623 a 32-bit instruction. */
1625 microblaze_bfd_write_imm_value_32 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1627 unsigned long instr = bfd_get_32 (abfd, bfd_addr);
1628 instr &= ~0x0000ffff;
1629 instr |= (val & 0x0000ffff);
1630 bfd_put_32 (abfd, instr, bfd_addr);
1633 /* Read-modify-write into the bfd, an immediate value into appropriate fields of
1634 two consecutive 32-bit instructions. */
1636 microblaze_bfd_write_imm_value_64 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1638 unsigned long instr_hi;
1639 unsigned long instr_lo;
1641 instr_hi = bfd_get_32 (abfd, bfd_addr);
1642 instr_hi &= ~0x0000ffff;
1643 instr_hi |= ((val >> 16) & 0x0000ffff);
1644 bfd_put_32 (abfd, instr_hi, bfd_addr);
1646 instr_lo = bfd_get_32 (abfd, bfd_addr + INST_WORD_SIZE);
1647 instr_lo &= ~0x0000ffff;
1648 instr_lo |= (val & 0x0000ffff);
1649 bfd_put_32 (abfd, instr_lo, bfd_addr + INST_WORD_SIZE);
1653 microblaze_elf_relax_section (bfd *abfd,
1655 struct bfd_link_info *link_info,
1658 Elf_Internal_Shdr *symtab_hdr;
1659 Elf_Internal_Rela *internal_relocs;
1660 Elf_Internal_Rela *free_relocs = NULL;
1661 Elf_Internal_Rela *irel, *irelend;
1662 bfd_byte *contents = NULL;
1663 bfd_byte *free_contents = NULL;
1668 struct elf_link_hash_entry *sym_hash;
1669 Elf_Internal_Sym *isymbuf, *isymend;
1670 Elf_Internal_Sym *isym;
1675 /* We only do this once per section. We may be able to delete some code
1676 by running multiple passes, but it is not worth it. */
1679 /* Only do this for a text section. */
1680 if (bfd_link_relocatable (link_info)
1681 || (sec->flags & SEC_RELOC) == 0
1682 || (sec->reloc_count == 0)
1683 || (sec->flags & SEC_CODE) == 0)
1686 BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0));
1688 /* If this is the first time we have been called for this section,
1689 initialize the cooked size. */
1691 sec->size = sec->rawsize;
1693 /* Get symbols for this section. */
1694 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1695 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1696 symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
1697 if (isymbuf == NULL)
1698 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, symcount,
1699 0, NULL, NULL, NULL);
1700 BFD_ASSERT (isymbuf != NULL);
1702 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory);
1703 if (internal_relocs == NULL)
1705 if (! link_info->keep_memory)
1706 free_relocs = internal_relocs;
1708 sec->relax = (struct relax_table *) bfd_malloc ((sec->reloc_count + 1)
1709 * sizeof (struct relax_table));
1710 if (sec->relax == NULL)
1712 sec->relax_count = 0;
1714 irelend = internal_relocs + sec->reloc_count;
1716 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1719 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64_PCREL)
1720 && (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64 ))
1721 continue; /* Can't delete this reloc. */
1723 /* Get the section contents. */
1724 if (contents == NULL)
1726 if (elf_section_data (sec)->this_hdr.contents != NULL)
1727 contents = elf_section_data (sec)->this_hdr.contents;
1730 contents = (bfd_byte *) bfd_malloc (sec->size);
1731 if (contents == NULL)
1733 free_contents = contents;
1735 if (!bfd_get_section_contents (abfd, sec, contents,
1736 (file_ptr) 0, sec->size))
1738 elf_section_data (sec)->this_hdr.contents = contents;
1742 /* Get the value of the symbol referred to by the reloc. */
1743 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1745 /* A local symbol. */
1748 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1749 if (isym->st_shndx == SHN_UNDEF)
1750 sym_sec = bfd_und_section_ptr;
1751 else if (isym->st_shndx == SHN_ABS)
1752 sym_sec = bfd_abs_section_ptr;
1753 else if (isym->st_shndx == SHN_COMMON)
1754 sym_sec = bfd_com_section_ptr;
1756 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1758 symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
1763 struct elf_link_hash_entry *h;
1765 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1766 h = elf_sym_hashes (abfd)[indx];
1767 BFD_ASSERT (h != NULL);
1769 if (h->root.type != bfd_link_hash_defined
1770 && h->root.type != bfd_link_hash_defweak)
1771 /* This appears to be a reference to an undefined
1772 symbol. Just ignore it--it will be caught by the
1773 regular reloc processing. */
1776 symval = (h->root.u.def.value
1777 + h->root.u.def.section->output_section->vma
1778 + h->root.u.def.section->output_offset);
1781 /* If this is a PC-relative reloc, subtract the instr offset from
1782 the symbol value. */
1783 if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_64_PCREL)
1785 symval = symval + irel->r_addend
1787 + sec->output_section->vma
1788 + sec->output_offset);
1791 symval += irel->r_addend;
1793 if ((symval & 0xffff8000) == 0
1794 || (symval & 0xffff8000) == 0xffff8000)
1796 /* We can delete this instruction. */
1797 sec->relax[sec->relax_count].addr = irel->r_offset;
1798 sec->relax[sec->relax_count].size = INST_WORD_SIZE;
1801 /* Rewrite relocation type. */
1802 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1804 case R_MICROBLAZE_64_PCREL:
1805 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1806 (int) R_MICROBLAZE_32_PCREL_LO);
1808 case R_MICROBLAZE_64:
1809 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1810 (int) R_MICROBLAZE_32_LO);
1813 /* Cannot happen. */
1817 } /* Loop through all relocations. */
1819 /* Loop through the relocs again, and see if anything needs to change. */
1820 if (sec->relax_count > 0)
1822 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1824 sec->relax[sec->relax_count].addr = sec->size;
1826 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1830 /* Get the new reloc address. */
1831 nraddr = irel->r_offset - calc_fixup (irel->r_offset, 0, sec);
1832 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1836 case R_MICROBLAZE_64_PCREL:
1838 case R_MICROBLAZE_64:
1839 case R_MICROBLAZE_32_LO:
1840 /* If this reloc is against a symbol defined in this
1841 section, we must check the addend to see it will put the value in
1842 range to be adjusted, and hence must be changed. */
1843 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1845 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1846 /* Only handle relocs against .text. */
1847 if (isym->st_shndx == shndx
1848 && ELF32_ST_TYPE (isym->st_info) == STT_SECTION)
1849 irel->r_addend -= calc_fixup (irel->r_addend, 0, sec);
1852 case R_MICROBLAZE_NONE:
1854 /* This was a PC-relative instruction that was
1855 completely resolved. */
1857 bfd_vma target_address;
1858 target_address = irel->r_addend + irel->r_offset;
1859 sfix = calc_fixup (irel->r_offset, 0, sec);
1860 efix = calc_fixup (target_address, 0, sec);
1861 irel->r_addend -= (efix - sfix);
1862 /* Should use HOWTO. */
1863 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset,
1867 case R_MICROBLAZE_64_NONE:
1869 /* This was a PC-relative 64-bit instruction that was
1870 completely resolved. */
1872 bfd_vma target_address;
1873 target_address = irel->r_addend + irel->r_offset + INST_WORD_SIZE;
1874 sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, 0, sec);
1875 efix = calc_fixup (target_address, 0, sec);
1876 irel->r_addend -= (efix - sfix);
1877 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset
1878 + INST_WORD_SIZE, irel->r_addend);
1882 irel->r_offset = nraddr;
1883 } /* Change all relocs in this section. */
1885 /* Look through all other sections. */
1886 for (o = abfd->sections; o != NULL; o = o->next)
1888 Elf_Internal_Rela *irelocs;
1889 Elf_Internal_Rela *irelscan, *irelscanend;
1890 bfd_byte *ocontents;
1893 || (o->flags & SEC_RELOC) == 0
1894 || o->reloc_count == 0)
1897 /* We always cache the relocs. Perhaps, if info->keep_memory is
1898 FALSE, we should free them, if we are permitted to. */
1900 irelocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, TRUE);
1901 if (irelocs == NULL)
1905 irelscanend = irelocs + o->reloc_count;
1906 for (irelscan = irelocs; irelscan < irelscanend; irelscan++)
1908 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32)
1910 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1912 /* Look at the reloc only if the value has been resolved. */
1913 if (isym->st_shndx == shndx
1914 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1916 if (ocontents == NULL)
1918 if (elf_section_data (o)->this_hdr.contents != NULL)
1919 ocontents = elf_section_data (o)->this_hdr.contents;
1922 /* We always cache the section contents.
1923 Perhaps, if info->keep_memory is FALSE, we
1924 should free them, if we are permitted to. */
1925 if (o->rawsize == 0)
1926 o->rawsize = o->size;
1927 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1928 if (ocontents == NULL)
1930 if (!bfd_get_section_contents (abfd, o, ocontents,
1934 elf_section_data (o)->this_hdr.contents = ocontents;
1938 irelscan->r_addend -= calc_fixup (irelscan->r_addend, 0, sec);
1940 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_SYM_OP_SYM)
1942 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1944 /* Look at the reloc only if the value has been resolved. */
1945 if (ocontents == NULL)
1947 if (elf_section_data (o)->this_hdr.contents != NULL)
1948 ocontents = elf_section_data (o)->this_hdr.contents;
1951 /* We always cache the section contents.
1952 Perhaps, if info->keep_memory is FALSE, we
1953 should free them, if we are permitted to. */
1955 if (o->rawsize == 0)
1956 o->rawsize = o->size;
1957 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1958 if (ocontents == NULL)
1960 if (!bfd_get_section_contents (abfd, o, ocontents,
1964 elf_section_data (o)->this_hdr.contents = ocontents;
1967 irelscan->r_addend -= calc_fixup (irel->r_addend
1973 else if ((ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_PCREL_LO)
1974 || (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_LO))
1976 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1978 /* Look at the reloc only if the value has been resolved. */
1979 if (isym->st_shndx == shndx
1980 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1983 bfd_vma target_address;
1985 if (ocontents == NULL)
1987 if (elf_section_data (o)->this_hdr.contents != NULL)
1988 ocontents = elf_section_data (o)->this_hdr.contents;
1991 /* We always cache the section contents.
1992 Perhaps, if info->keep_memory is FALSE, we
1993 should free them, if we are permitted to. */
1994 if (o->rawsize == 0)
1995 o->rawsize = o->size;
1996 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1997 if (ocontents == NULL)
1999 if (!bfd_get_section_contents (abfd, o, ocontents,
2003 elf_section_data (o)->this_hdr.contents = ocontents;
2007 unsigned long instr = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
2008 immediate = instr & 0x0000ffff;
2009 target_address = immediate;
2010 offset = calc_fixup (target_address, 0, sec);
2011 immediate -= offset;
2012 irelscan->r_addend -= offset;
2013 microblaze_bfd_write_imm_value_32 (abfd, ocontents + irelscan->r_offset,
2014 irelscan->r_addend);
2018 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64)
2020 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2022 /* Look at the reloc only if the value has been resolved. */
2023 if (isym->st_shndx == shndx
2024 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2028 if (ocontents == NULL)
2030 if (elf_section_data (o)->this_hdr.contents != NULL)
2031 ocontents = elf_section_data (o)->this_hdr.contents;
2034 /* We always cache the section contents.
2035 Perhaps, if info->keep_memory is FALSE, we
2036 should free them, if we are permitted to. */
2038 if (o->rawsize == 0)
2039 o->rawsize = o->size;
2040 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2041 if (ocontents == NULL)
2043 if (!bfd_get_section_contents (abfd, o, ocontents,
2047 elf_section_data (o)->this_hdr.contents = ocontents;
2050 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2051 + irelscan->r_offset);
2052 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2053 + irelscan->r_offset
2055 immediate = (instr_hi & 0x0000ffff) << 16;
2056 immediate |= (instr_lo & 0x0000ffff);
2057 offset = calc_fixup (irelscan->r_addend, 0, sec);
2058 immediate -= offset;
2059 irelscan->r_addend -= offset;
2062 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64_PCREL)
2064 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2066 /* Look at the reloc only if the value has been resolved. */
2067 if (isym->st_shndx == shndx
2068 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2071 bfd_vma target_address;
2073 if (ocontents == NULL)
2075 if (elf_section_data (o)->this_hdr.contents != NULL)
2076 ocontents = elf_section_data (o)->this_hdr.contents;
2079 /* We always cache the section contents.
2080 Perhaps, if info->keep_memory is FALSE, we
2081 should free them, if we are permitted to. */
2082 if (o->rawsize == 0)
2083 o->rawsize = o->size;
2084 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2085 if (ocontents == NULL)
2087 if (!bfd_get_section_contents (abfd, o, ocontents,
2091 elf_section_data (o)->this_hdr.contents = ocontents;
2094 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2095 + irelscan->r_offset);
2096 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2097 + irelscan->r_offset
2099 immediate = (instr_hi & 0x0000ffff) << 16;
2100 immediate |= (instr_lo & 0x0000ffff);
2101 target_address = immediate;
2102 offset = calc_fixup (target_address, 0, sec);
2103 immediate -= offset;
2104 irelscan->r_addend -= offset;
2105 microblaze_bfd_write_imm_value_64 (abfd, ocontents
2106 + irelscan->r_offset, immediate);
2112 /* Adjust the local symbols defined in this section. */
2113 isymend = isymbuf + symtab_hdr->sh_info;
2114 for (isym = isymbuf; isym < isymend; isym++)
2116 if (isym->st_shndx == shndx)
2118 isym->st_value -= calc_fixup (isym->st_value, 0, sec);
2120 isym->st_size -= calc_fixup (isym->st_value, isym->st_size, sec);
2124 /* Now adjust the global symbols defined in this section. */
2125 isym = isymbuf + symtab_hdr->sh_info;
2126 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) - symtab_hdr->sh_info;
2127 for (sym_index = 0; sym_index < symcount; sym_index++)
2129 sym_hash = elf_sym_hashes (abfd)[sym_index];
2130 if ((sym_hash->root.type == bfd_link_hash_defined
2131 || sym_hash->root.type == bfd_link_hash_defweak)
2132 && sym_hash->root.u.def.section == sec)
2134 sym_hash->root.u.def.value -= calc_fixup (sym_hash->root.u.def.value,
2137 sym_hash->size -= calc_fixup (sym_hash->root.u.def.value,
2138 sym_hash->size, sec);
2142 /* Physically move the code and change the cooked size. */
2143 dest = sec->relax[0].addr;
2144 for (i = 0; i < sec->relax_count; i++)
2147 src = sec->relax[i].addr + sec->relax[i].size;
2148 len = sec->relax[i+1].addr - sec->relax[i].addr - sec->relax[i].size;
2150 memmove (contents + dest, contents + src, len);
2151 sec->size -= sec->relax[i].size;
2155 elf_section_data (sec)->relocs = internal_relocs;
2158 elf_section_data (sec)->this_hdr.contents = contents;
2159 free_contents = NULL;
2161 symtab_hdr->contents = (bfd_byte *) isymbuf;
2164 if (free_relocs != NULL)
2170 if (free_contents != NULL)
2172 if (!link_info->keep_memory)
2173 free (free_contents);
2175 /* Cache the section contents for elf_link_input_bfd. */
2176 elf_section_data (sec)->this_hdr.contents = contents;
2177 free_contents = NULL;
2180 if (sec->relax_count == 0)
2191 if (free_relocs != NULL)
2193 if (free_contents != NULL)
2194 free (free_contents);
2195 if (sec->relax != NULL)
2199 sec->relax_count = 0;
2204 /* Return the section that should be marked against GC for a given
2208 microblaze_elf_gc_mark_hook (asection *sec,
2209 struct bfd_link_info * info,
2210 Elf_Internal_Rela * rel,
2211 struct elf_link_hash_entry * h,
2212 Elf_Internal_Sym * sym)
2215 switch (ELF32_R_TYPE (rel->r_info))
2217 case R_MICROBLAZE_GNU_VTINHERIT:
2218 case R_MICROBLAZE_GNU_VTENTRY:
2222 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2225 /* Update the got entry reference counts for the section being removed. */
2228 microblaze_elf_gc_sweep_hook (bfd * abfd ATTRIBUTE_UNUSED,
2229 struct bfd_link_info * info ATTRIBUTE_UNUSED,
2230 asection * sec ATTRIBUTE_UNUSED,
2231 const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
2238 #define PLT_ENTRY_SIZE 16
2240 #define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */
2241 #define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */
2242 #define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */
2243 #define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */
2244 #define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */
2247 update_local_sym_info (bfd *abfd,
2248 Elf_Internal_Shdr *symtab_hdr,
2249 unsigned long r_symndx,
2250 unsigned int tls_type)
2252 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2253 unsigned char *local_got_tls_masks;
2255 if (local_got_refcounts == NULL)
2257 bfd_size_type size = symtab_hdr->sh_info;
2259 size *= (sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks));
2260 local_got_refcounts = bfd_zalloc (abfd, size);
2261 if (local_got_refcounts == NULL)
2263 elf_local_got_refcounts (abfd) = local_got_refcounts;
2266 local_got_tls_masks =
2267 (unsigned char *) (local_got_refcounts + symtab_hdr->sh_info);
2268 local_got_tls_masks[r_symndx] |= tls_type;
2269 local_got_refcounts[r_symndx] += 1;
2273 /* Look through the relocs for a section during the first phase. */
2276 microblaze_elf_check_relocs (bfd * abfd,
2277 struct bfd_link_info * info,
2279 const Elf_Internal_Rela * relocs)
2281 Elf_Internal_Shdr * symtab_hdr;
2282 struct elf_link_hash_entry ** sym_hashes;
2283 struct elf_link_hash_entry ** sym_hashes_end;
2284 const Elf_Internal_Rela * rel;
2285 const Elf_Internal_Rela * rel_end;
2286 struct elf32_mb_link_hash_table *htab;
2287 asection *sreloc = NULL;
2289 if (bfd_link_relocatable (info))
2292 htab = elf32_mb_hash_table (info);
2296 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2297 sym_hashes = elf_sym_hashes (abfd);
2298 sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
2299 if (!elf_bad_symtab (abfd))
2300 sym_hashes_end -= symtab_hdr->sh_info;
2302 rel_end = relocs + sec->reloc_count;
2304 for (rel = relocs; rel < rel_end; rel++)
2306 unsigned int r_type;
2307 struct elf_link_hash_entry * h;
2308 unsigned long r_symndx;
2309 unsigned char tls_type = 0;
2311 r_symndx = ELF32_R_SYM (rel->r_info);
2312 r_type = ELF32_R_TYPE (rel->r_info);
2314 if (r_symndx < symtab_hdr->sh_info)
2318 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
2320 /* PR15323, ref flags aren't set for references in the same
2322 h->root.non_ir_ref = 1;
2327 /* This relocation describes the C++ object vtable hierarchy.
2328 Reconstruct it for later use during GC. */
2329 case R_MICROBLAZE_GNU_VTINHERIT:
2330 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2334 /* This relocation describes which C++ vtable entries are actually
2335 used. Record for later use during GC. */
2336 case R_MICROBLAZE_GNU_VTENTRY:
2337 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2341 /* This relocation requires .plt entry. */
2342 case R_MICROBLAZE_PLT_64:
2346 h->plt.refcount += 1;
2350 /* This relocation requires .got entry. */
2351 case R_MICROBLAZE_TLSGD:
2352 tls_type |= (TLS_TLS | TLS_GD);
2354 case R_MICROBLAZE_TLSLD:
2355 tls_type |= (TLS_TLS | TLS_LD);
2358 sec->has_tls_reloc = 1;
2360 case R_MICROBLAZE_GOT_64:
2361 if (htab->elf.sgot == NULL)
2363 if (htab->elf.dynobj == NULL)
2364 htab->elf.dynobj = abfd;
2365 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2370 h->got.refcount += 1;
2371 elf32_mb_hash_entry (h)->tls_mask |= tls_type;
2375 if (! update_local_sym_info(abfd, symtab_hdr, r_symndx, tls_type) )
2380 case R_MICROBLAZE_64:
2381 case R_MICROBLAZE_64_PCREL:
2382 case R_MICROBLAZE_32:
2384 if (h != NULL && !bfd_link_pic (info))
2386 /* we may need a copy reloc. */
2389 /* we may also need a .plt entry. */
2390 h->plt.refcount += 1;
2391 if (ELF32_R_TYPE (rel->r_info) != R_MICROBLAZE_64_PCREL)
2392 h->pointer_equality_needed = 1;
2396 /* If we are creating a shared library, and this is a reloc
2397 against a global symbol, or a non PC relative reloc
2398 against a local symbol, then we need to copy the reloc
2399 into the shared library. However, if we are linking with
2400 -Bsymbolic, we do not need to copy a reloc against a
2401 global symbol which is defined in an object we are
2402 including in the link (i.e., DEF_REGULAR is set). At
2403 this point we have not seen all the input files, so it is
2404 possible that DEF_REGULAR is not set now but will be set
2405 later (it is never cleared). In case of a weak definition,
2406 DEF_REGULAR may be cleared later by a strong definition in
2407 a shared library. We account for that possibility below by
2408 storing information in the relocs_copied field of the hash
2409 table entry. A similar situation occurs when creating
2410 shared libraries and symbol visibility changes render the
2413 If on the other hand, we are creating an executable, we
2414 may need to keep relocations for symbols satisfied by a
2415 dynamic library if we manage to avoid copy relocs for the
2418 if ((bfd_link_pic (info)
2419 && (sec->flags & SEC_ALLOC) != 0
2420 && (r_type != R_MICROBLAZE_64_PCREL
2422 && (! info->symbolic
2423 || h->root.type == bfd_link_hash_defweak
2424 || !h->def_regular))))
2425 || (!bfd_link_pic (info)
2426 && (sec->flags & SEC_ALLOC) != 0
2428 && (h->root.type == bfd_link_hash_defweak
2429 || !h->def_regular)))
2431 struct elf32_mb_dyn_relocs *p;
2432 struct elf32_mb_dyn_relocs **head;
2434 /* When creating a shared object, we must copy these
2435 relocs into the output file. We create a reloc
2436 section in dynobj and make room for the reloc. */
2442 if (htab->elf.dynobj == NULL)
2443 htab->elf.dynobj = abfd;
2444 dynobj = htab->elf.dynobj;
2446 sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
2452 /* If this is a global symbol, we count the number of
2453 relocations we need for this symbol. */
2455 head = &((struct elf32_mb_link_hash_entry *) h)->dyn_relocs;
2458 /* Track dynamic relocs needed for local syms too.
2459 We really need local syms available to do this
2463 Elf_Internal_Sym *isym;
2466 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
2471 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2475 vpp = &elf_section_data (s)->local_dynrel;
2476 head = (struct elf32_mb_dyn_relocs **) vpp;
2480 if (p == NULL || p->sec != sec)
2482 bfd_size_type amt = sizeof *p;
2483 p = ((struct elf32_mb_dyn_relocs *)
2484 bfd_alloc (htab->elf.dynobj, amt));
2495 if (r_type == R_MICROBLAZE_64_PCREL)
2507 microblaze_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2509 struct elf32_mb_link_hash_table *htab;
2511 htab = elf32_mb_hash_table (info);
2515 if (!htab->elf.sgot && !_bfd_elf_create_got_section (dynobj, info))
2518 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2521 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
2522 if (!bfd_link_pic (info))
2523 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
2525 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
2526 || (!bfd_link_pic (info) && !htab->srelbss))
2532 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2535 microblaze_elf_copy_indirect_symbol (struct bfd_link_info *info,
2536 struct elf_link_hash_entry *dir,
2537 struct elf_link_hash_entry *ind)
2539 struct elf32_mb_link_hash_entry *edir, *eind;
2541 edir = (struct elf32_mb_link_hash_entry *) dir;
2542 eind = (struct elf32_mb_link_hash_entry *) ind;
2544 if (eind->dyn_relocs != NULL)
2546 if (edir->dyn_relocs != NULL)
2548 struct elf32_mb_dyn_relocs **pp;
2549 struct elf32_mb_dyn_relocs *p;
2551 if (ind->root.type == bfd_link_hash_indirect)
2554 /* Add reloc counts against the weak sym to the strong sym
2555 list. Merge any entries against the same section. */
2556 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2558 struct elf32_mb_dyn_relocs *q;
2560 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2561 if (q->sec == p->sec)
2563 q->pc_count += p->pc_count;
2564 q->count += p->count;
2571 *pp = edir->dyn_relocs;
2574 edir->dyn_relocs = eind->dyn_relocs;
2575 eind->dyn_relocs = NULL;
2578 edir->tls_mask |= eind->tls_mask;
2580 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2584 microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2585 struct elf_link_hash_entry *h)
2587 struct elf32_mb_link_hash_table *htab;
2588 struct elf32_mb_link_hash_entry * eh;
2589 struct elf32_mb_dyn_relocs *p;
2590 asection *sdynbss, *s;
2591 unsigned int power_of_two;
2594 htab = elf32_mb_hash_table (info);
2598 /* If this is a function, put it in the procedure linkage table. We
2599 will fill in the contents of the procedure linkage table later,
2600 when we know the address of the .got section. */
2601 if (h->type == STT_FUNC
2604 if (h->plt.refcount <= 0
2605 || SYMBOL_CALLS_LOCAL (info, h)
2606 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2607 && h->root.type == bfd_link_hash_undefweak))
2609 /* This case can occur if we saw a PLT reloc in an input
2610 file, but the symbol was never referred to by a dynamic
2611 object, or if all references were garbage collected. In
2612 such a case, we don't actually need to build a procedure
2613 linkage table, and we can just do a PC32 reloc instead. */
2614 h->plt.offset = (bfd_vma) -1;
2621 /* It's possible that we incorrectly decided a .plt reloc was
2622 needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in
2623 check_relocs. We can't decide accurately between function and
2624 non-function syms in check-relocs; Objects loaded later in
2625 the link may change h->type. So fix it now. */
2626 h->plt.offset = (bfd_vma) -1;
2628 /* If this is a weak symbol, and there is a real definition, the
2629 processor independent code will have arranged for us to see the
2630 real definition first, and we can just use the same value. */
2631 if (h->u.weakdef != NULL)
2633 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2634 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2635 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2636 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2640 /* This is a reference to a symbol defined by a dynamic object which
2641 is not a function. */
2643 /* If we are creating a shared library, we must presume that the
2644 only references to the symbol are via the global offset table.
2645 For such cases we need not do anything here; the relocations will
2646 be handled correctly by relocate_section. */
2647 if (bfd_link_pic (info))
2650 /* If there are no references to this symbol that do not use the
2651 GOT, we don't need to generate a copy reloc. */
2652 if (!h->non_got_ref)
2655 /* If -z nocopyreloc was given, we won't generate them either. */
2656 if (info->nocopyreloc)
2662 eh = (struct elf32_mb_link_hash_entry *) h;
2663 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2665 s = p->sec->output_section;
2666 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2670 /* If we didn't find any dynamic relocs in read-only sections, then
2671 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2678 /* We must allocate the symbol in our .dynbss section, which will
2679 become part of the .bss section of the executable. There will be
2680 an entry for this symbol in the .dynsym section. The dynamic
2681 object will contain position independent code, so all references
2682 from the dynamic object to this symbol will go through the global
2683 offset table. The dynamic linker will use the .dynsym entry to
2684 determine the address it must put in the global offset table, so
2685 both the dynamic object and the regular object will refer to the
2686 same memory location for the variable. */
2688 /* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker
2689 to copy the initial value out of the dynamic object and into the
2690 runtime process image. */
2691 dynobj = elf_hash_table (info)->dynobj;
2692 BFD_ASSERT (dynobj != NULL);
2693 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2695 htab->srelbss->size += sizeof (Elf32_External_Rela);
2699 /* We need to figure out the alignment required for this symbol. I
2700 have no idea how ELF linkers handle this. */
2701 power_of_two = bfd_log2 (h->size);
2702 if (power_of_two > 3)
2705 sdynbss = htab->sdynbss;
2706 /* Apply the required alignment. */
2707 sdynbss->size = BFD_ALIGN (sdynbss->size, (bfd_size_type) (1 << power_of_two));
2708 if (power_of_two > bfd_get_section_alignment (dynobj, sdynbss))
2710 if (! bfd_set_section_alignment (dynobj, sdynbss, power_of_two))
2714 /* Define the symbol as being at this point in the section. */
2715 h->root.u.def.section = sdynbss;
2716 h->root.u.def.value = sdynbss->size;
2718 /* Increment the section size to make room for the symbol. */
2719 sdynbss->size += h->size;
2723 /* Allocate space in .plt, .got and associated reloc sections for
2727 allocate_dynrelocs (struct elf_link_hash_entry *h, void * dat)
2729 struct bfd_link_info *info;
2730 struct elf32_mb_link_hash_table *htab;
2731 struct elf32_mb_link_hash_entry *eh;
2732 struct elf32_mb_dyn_relocs *p;
2734 if (h->root.type == bfd_link_hash_indirect)
2737 info = (struct bfd_link_info *) dat;
2738 htab = elf32_mb_hash_table (info);
2742 if (htab->elf.dynamic_sections_created
2743 && h->plt.refcount > 0)
2745 /* Make sure this symbol is output as a dynamic symbol.
2746 Undefined weak syms won't yet be marked as dynamic. */
2747 if (h->dynindx == -1
2748 && !h->forced_local)
2750 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2754 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2756 asection *s = htab->elf.splt;
2758 /* The first entry in .plt is reserved. */
2760 s->size = PLT_ENTRY_SIZE;
2762 h->plt.offset = s->size;
2764 /* If this symbol is not defined in a regular file, and we are
2765 not generating a shared library, then set the symbol to this
2766 location in the .plt. This is required to make function
2767 pointers compare as equal between the normal executable and
2768 the shared library. */
2769 if (! bfd_link_pic (info)
2772 h->root.u.def.section = s;
2773 h->root.u.def.value = h->plt.offset;
2776 /* Make room for this entry. */
2777 s->size += PLT_ENTRY_SIZE;
2779 /* We also need to make an entry in the .got.plt section, which
2780 will be placed in the .got section by the linker script. */
2781 htab->elf.sgotplt->size += 4;
2783 /* We also need to make an entry in the .rel.plt section. */
2784 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
2788 h->plt.offset = (bfd_vma) -1;
2794 h->plt.offset = (bfd_vma) -1;
2798 eh = (struct elf32_mb_link_hash_entry *) h;
2799 if (h->got.refcount > 0)
2804 /* Make sure this symbol is output as a dynamic symbol.
2805 Undefined weak syms won't yet be marked as dynamic. */
2806 if (h->dynindx == -1
2807 && !h->forced_local)
2809 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2814 if ((eh->tls_mask & TLS_TLS) != 0)
2816 /* Handle TLS Symbol */
2817 if ((eh->tls_mask & TLS_LD) != 0)
2819 if (!eh->elf.def_dynamic)
2820 /* We'll just use htab->tlsld_got.offset. This should
2821 always be the case. It's a little odd if we have
2822 a local dynamic reloc against a non-local symbol. */
2823 htab->tlsld_got.refcount += 1;
2827 if ((eh->tls_mask & TLS_GD) != 0)
2832 /* Regular (non-TLS) symbol */
2837 h->got.offset = (bfd_vma) -1;
2842 h->got.offset = s->size;
2844 htab->elf.srelgot->size += need * (sizeof (Elf32_External_Rela) / 4);
2848 h->got.offset = (bfd_vma) -1;
2850 if (eh->dyn_relocs == NULL)
2853 /* In the shared -Bsymbolic case, discard space allocated for
2854 dynamic pc-relative relocs against symbols which turn out to be
2855 defined in regular objects. For the normal shared case, discard
2856 space for pc-relative relocs that have become local due to symbol
2857 visibility changes. */
2859 if (bfd_link_pic (info))
2865 struct elf32_mb_dyn_relocs **pp;
2867 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2869 p->count -= p->pc_count;
2880 /* For the non-shared case, discard space for relocs against
2881 symbols which turn out to need copy relocs or are not
2887 || (htab->elf.dynamic_sections_created
2888 && (h->root.type == bfd_link_hash_undefweak
2889 || h->root.type == bfd_link_hash_undefined))))
2891 /* Make sure this symbol is output as a dynamic symbol.
2892 Undefined weak syms won't yet be marked as dynamic. */
2893 if (h->dynindx == -1
2894 && !h->forced_local)
2896 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2900 /* If that succeeded, we know we'll be keeping all the
2902 if (h->dynindx != -1)
2906 eh->dyn_relocs = NULL;
2911 /* Finally, allocate space. */
2912 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2914 asection *sreloc = elf_section_data (p->sec)->sreloc;
2915 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2921 /* Set the sizes of the dynamic sections. */
2924 microblaze_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2925 struct bfd_link_info *info)
2927 struct elf32_mb_link_hash_table *htab;
2932 htab = elf32_mb_hash_table (info);
2936 dynobj = htab->elf.dynobj;
2937 BFD_ASSERT (dynobj != NULL);
2939 /* Set up .got offsets for local syms, and space for local dynamic
2941 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2943 bfd_signed_vma *local_got;
2944 bfd_signed_vma *end_local_got;
2945 bfd_size_type locsymcount;
2946 Elf_Internal_Shdr *symtab_hdr;
2947 unsigned char *lgot_masks;
2950 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2953 for (s = ibfd->sections; s != NULL; s = s->next)
2955 struct elf32_mb_dyn_relocs *p;
2957 for (p = ((struct elf32_mb_dyn_relocs *)
2958 elf_section_data (s)->local_dynrel);
2962 if (!bfd_is_abs_section (p->sec)
2963 && bfd_is_abs_section (p->sec->output_section))
2965 /* Input section has been discarded, either because
2966 it is a copy of a linkonce section or due to
2967 linker script /DISCARD/, so we'll be discarding
2970 else if (p->count != 0)
2972 srel = elf_section_data (p->sec)->sreloc;
2973 srel->size += p->count * sizeof (Elf32_External_Rela);
2974 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2975 info->flags |= DF_TEXTREL;
2980 local_got = elf_local_got_refcounts (ibfd);
2984 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2985 locsymcount = symtab_hdr->sh_info;
2986 end_local_got = local_got + locsymcount;
2987 lgot_masks = (unsigned char *) end_local_got;
2989 srel = htab->elf.srelgot;
2991 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
2995 unsigned int need = 0;
2996 if ((*lgot_masks & TLS_TLS) != 0)
2998 if ((*lgot_masks & TLS_GD) != 0)
3000 if ((*lgot_masks & TLS_LD) != 0)
3001 htab->tlsld_got.refcount += 1;
3008 *local_got = (bfd_vma) -1;
3012 *local_got = s->size;
3014 if (bfd_link_pic (info))
3015 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
3019 *local_got = (bfd_vma) -1;
3023 /* Allocate global sym .plt and .got entries, and space for global
3024 sym dynamic relocs. */
3025 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
3027 if (htab->tlsld_got.refcount > 0)
3029 htab->tlsld_got.offset = htab->elf.sgot->size;
3030 htab->elf.sgot->size += 8;
3031 if (bfd_link_pic (info))
3032 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3035 htab->tlsld_got.offset = (bfd_vma) -1;
3037 if (elf_hash_table (info)->dynamic_sections_created)
3039 /* Make space for the trailing nop in .plt. */
3040 if (htab->elf.splt->size > 0)
3041 htab->elf.splt->size += 4;
3044 /* The check_relocs and adjust_dynamic_symbol entry points have
3045 determined the sizes of the various dynamic sections. Allocate
3047 for (s = dynobj->sections; s != NULL; s = s->next)
3050 bfd_boolean strip = FALSE;
3052 if ((s->flags & SEC_LINKER_CREATED) == 0)
3055 /* It's OK to base decisions on the section name, because none
3056 of the dynobj section names depend upon the input files. */
3057 name = bfd_get_section_name (dynobj, s);
3059 if (strncmp (name, ".rela", 5) == 0)
3063 /* If we don't need this section, strip it from the
3064 output file. This is to handle .rela.bss and
3065 .rela.plt. We must create it in
3066 create_dynamic_sections, because it must be created
3067 before the linker maps input sections to output
3068 sections. The linker does that before
3069 adjust_dynamic_symbol is called, and it is that
3070 function which decides whether anything needs to go
3071 into these sections. */
3076 /* We use the reloc_count field as a counter if we need
3077 to copy relocs into the output file. */
3081 else if (s != htab->elf.splt
3082 && s != htab->elf.sgot
3083 && s != htab->elf.sgotplt)
3085 /* It's not one of our sections, so don't allocate space. */
3091 s->flags |= SEC_EXCLUDE;
3095 /* Allocate memory for the section contents. */
3096 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3097 Unused entries should be reclaimed before the section's contents
3098 are written out, but at the moment this does not happen. Thus in
3099 order to prevent writing out garbage, we initialise the section's
3100 contents to zero. */
3101 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3102 if (s->contents == NULL && s->size != 0)
3106 if (elf_hash_table (info)->dynamic_sections_created)
3108 /* Add some entries to the .dynamic section. We fill in the
3109 values later, in microblaze_elf_finish_dynamic_sections, but we
3110 must add the entries now so that we get the correct size for
3111 the .dynamic section. The DT_DEBUG entry is filled in by the
3112 dynamic linker and used by the debugger. */
3113 #define add_dynamic_entry(TAG, VAL) \
3114 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3116 if (bfd_link_executable (info))
3118 if (!add_dynamic_entry (DT_DEBUG, 0))
3122 if (!add_dynamic_entry (DT_RELA, 0)
3123 || !add_dynamic_entry (DT_RELASZ, 0)
3124 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3127 if (htab->elf.splt->size != 0)
3129 if (!add_dynamic_entry (DT_PLTGOT, 0)
3130 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3131 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3132 || !add_dynamic_entry (DT_JMPREL, 0)
3133 || !add_dynamic_entry (DT_BIND_NOW, 1))
3137 if (info->flags & DF_TEXTREL)
3139 if (!add_dynamic_entry (DT_TEXTREL, 0))
3143 #undef add_dynamic_entry
3147 /* Finish up dynamic symbol handling. We set the contents of various
3148 dynamic sections here. */
3151 microblaze_elf_finish_dynamic_symbol (bfd *output_bfd,
3152 struct bfd_link_info *info,
3153 struct elf_link_hash_entry *h,
3154 Elf_Internal_Sym *sym)
3156 struct elf32_mb_link_hash_table *htab;
3157 struct elf32_mb_link_hash_entry *eh = elf32_mb_hash_entry(h);
3159 htab = elf32_mb_hash_table (info);
3163 if (h->plt.offset != (bfd_vma) -1)
3168 Elf_Internal_Rela rela;
3174 /* This symbol has an entry in the procedure linkage table. Set
3176 BFD_ASSERT (h->dynindx != -1);
3178 splt = htab->elf.splt;
3179 srela = htab->elf.srelplt;
3180 sgotplt = htab->elf.sgotplt;
3181 BFD_ASSERT (splt != NULL && srela != NULL && sgotplt != NULL);
3183 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; /* first entry reserved. */
3184 got_offset = (plt_index + 3) * 4; /* 3 reserved ??? */
3185 got_addr = got_offset;
3187 /* For non-PIC objects we need absolute address of the GOT entry. */
3188 if (!bfd_link_pic (info))
3189 got_addr += sgotplt->output_section->vma + sgotplt->output_offset;
3191 /* Fill in the entry in the procedure linkage table. */
3192 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_0 + ((got_addr >> 16) & 0xffff),
3193 splt->contents + h->plt.offset);
3194 if (bfd_link_pic (info))
3195 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1 + (got_addr & 0xffff),
3196 splt->contents + h->plt.offset + 4);
3198 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1_NOPIC + (got_addr & 0xffff),
3199 splt->contents + h->plt.offset + 4);
3200 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_2,
3201 splt->contents + h->plt.offset + 8);
3202 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_3,
3203 splt->contents + h->plt.offset + 12);
3205 /* Any additions to the .got section??? */
3206 /* bfd_put_32 (output_bfd,
3207 splt->output_section->vma + splt->output_offset + h->plt.offset + 4,
3208 sgotplt->contents + got_offset); */
3210 /* Fill in the entry in the .rela.plt section. */
3211 rela.r_offset = (sgotplt->output_section->vma
3212 + sgotplt->output_offset
3214 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_JUMP_SLOT);
3216 loc = srela->contents;
3217 loc += plt_index * sizeof (Elf32_External_Rela);
3218 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3220 if (!h->def_regular)
3222 /* Mark the symbol as undefined, rather than as defined in
3223 the .plt section. Zero the value. */
3224 sym->st_shndx = SHN_UNDEF;
3229 /* h->got.refcount to be checked ? */
3230 if (h->got.offset != (bfd_vma) -1 &&
3231 ! ((h->got.offset & 1) ||
3232 IS_TLS_LD(eh->tls_mask) || IS_TLS_GD(eh->tls_mask)))
3238 /* This symbol has an entry in the global offset table. Set it
3241 sgot = htab->elf.sgot;
3242 srela = htab->elf.srelgot;
3243 BFD_ASSERT (sgot != NULL && srela != NULL);
3245 offset = (sgot->output_section->vma + sgot->output_offset
3246 + (h->got.offset &~ (bfd_vma) 1));
3248 /* If this is a -Bsymbolic link, and the symbol is defined
3249 locally, we just want to emit a RELATIVE reloc. Likewise if
3250 the symbol was forced to be local because of a version file.
3251 The entry in the global offset table will already have been
3252 initialized in the relocate_section function. */
3253 if (bfd_link_pic (info)
3254 && ((info->symbolic && h->def_regular)
3255 || h->dynindx == -1))
3257 asection *sec = h->root.u.def.section;
3258 microblaze_elf_output_dynamic_relocation (output_bfd,
3259 srela, srela->reloc_count++,
3261 R_MICROBLAZE_REL, offset,
3263 + sec->output_section->vma
3264 + sec->output_offset);
3268 microblaze_elf_output_dynamic_relocation (output_bfd,
3269 srela, srela->reloc_count++,
3271 R_MICROBLAZE_GLOB_DAT,
3275 bfd_put_32 (output_bfd, (bfd_vma) 0,
3276 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
3282 Elf_Internal_Rela rela;
3285 /* This symbols needs a copy reloc. Set it up. */
3287 BFD_ASSERT (h->dynindx != -1);
3289 s = bfd_get_linker_section (htab->elf.dynobj, ".rela.bss");
3290 BFD_ASSERT (s != NULL);
3292 rela.r_offset = (h->root.u.def.value
3293 + h->root.u.def.section->output_section->vma
3294 + h->root.u.def.section->output_offset);
3295 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_COPY);
3297 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3298 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3301 /* Mark some specially defined symbols as absolute. */
3302 if (h == htab->elf.hdynamic
3303 || h == htab->elf.hgot
3304 || h == htab->elf.hplt)
3305 sym->st_shndx = SHN_ABS;
3311 /* Finish up the dynamic sections. */
3314 microblaze_elf_finish_dynamic_sections (bfd *output_bfd,
3315 struct bfd_link_info *info)
3318 asection *sdyn, *sgot;
3319 struct elf32_mb_link_hash_table *htab;
3321 htab = elf32_mb_hash_table (info);
3325 dynobj = htab->elf.dynobj;
3327 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3329 if (htab->elf.dynamic_sections_created)
3332 Elf32_External_Dyn *dyncon, *dynconend;
3334 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3335 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3336 for (; dyncon < dynconend; dyncon++)
3338 Elf_Internal_Dyn dyn;
3342 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3347 s = htab->elf.sgotplt;
3352 s = htab->elf.srelplt;
3357 s = htab->elf.srelplt;
3370 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3372 dyn.d_un.d_val = s->size;
3374 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3377 splt = htab->elf.splt;
3378 BFD_ASSERT (splt != NULL && sdyn != NULL);
3380 /* Clear the first entry in the procedure linkage table,
3381 and put a nop in the last four bytes. */
3384 memset (splt->contents, 0, PLT_ENTRY_SIZE);
3385 bfd_put_32 (output_bfd, (bfd_vma) 0x80000000 /* nop. */,
3386 splt->contents + splt->size - 4);
3389 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
3392 /* Set the first entry in the global offset table to the address of
3393 the dynamic section. */
3394 sgot = htab->elf.sgotplt;
3395 if (sgot && sgot->size > 0)
3398 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3400 bfd_put_32 (output_bfd,
3401 sdyn->output_section->vma + sdyn->output_offset,
3403 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3406 if (htab->elf.sgot && htab->elf.sgot->size > 0)
3407 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
3412 /* Hook called by the linker routine which adds symbols from an object
3413 file. We use it to put .comm items in .sbss, and not .bss. */
3416 microblaze_elf_add_symbol_hook (bfd *abfd,
3417 struct bfd_link_info *info,
3418 Elf_Internal_Sym *sym,
3419 const char **namep ATTRIBUTE_UNUSED,
3420 flagword *flagsp ATTRIBUTE_UNUSED,
3424 if (sym->st_shndx == SHN_COMMON
3425 && !bfd_link_relocatable (info)
3426 && sym->st_size <= elf_gp_size (abfd))
3428 /* Common symbols less than or equal to -G nn bytes are automatically
3430 *secp = bfd_make_section_old_way (abfd, ".sbss");
3432 || ! bfd_set_section_flags (abfd, *secp, SEC_IS_COMMON))
3435 *valp = sym->st_size;
3441 #define TARGET_LITTLE_SYM microblaze_elf32_le_vec
3442 #define TARGET_LITTLE_NAME "elf32-microblazeel"
3444 #define TARGET_BIG_SYM microblaze_elf32_vec
3445 #define TARGET_BIG_NAME "elf32-microblaze"
3447 #define ELF_ARCH bfd_arch_microblaze
3448 #define ELF_TARGET_ID MICROBLAZE_ELF_DATA
3449 #define ELF_MACHINE_CODE EM_MICROBLAZE
3450 #define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD
3451 #define ELF_MAXPAGESIZE 0x1000
3452 #define elf_info_to_howto microblaze_elf_info_to_howto
3453 #define elf_info_to_howto_rel NULL
3455 #define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup
3456 #define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name
3457 #define elf_backend_relocate_section microblaze_elf_relocate_section
3458 #define bfd_elf32_bfd_relax_section microblaze_elf_relax_section
3459 #define bfd_elf32_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
3460 #define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup
3462 #define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook
3463 #define elf_backend_gc_sweep_hook microblaze_elf_gc_sweep_hook
3464 #define elf_backend_check_relocs microblaze_elf_check_relocs
3465 #define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol
3466 #define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create
3467 #define elf_backend_can_gc_sections 1
3468 #define elf_backend_can_refcount 1
3469 #define elf_backend_want_got_plt 1
3470 #define elf_backend_plt_readonly 1
3471 #define elf_backend_got_header_size 12
3472 #define elf_backend_rela_normal 1
3473 #define elf_backend_dtrel_excludes_plt 1
3475 #define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol
3476 #define elf_backend_create_dynamic_sections microblaze_elf_create_dynamic_sections
3477 #define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections
3478 #define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol
3479 #define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections
3480 #define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook
3482 #include "elf32-target.h"