1 /* FRV-specific support for 32-bit ELF.
2 Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/dwarf2.h"
28 /* Forward declarations. */
29 static bfd_reloc_status_type elf32_frv_relocate_lo16
30 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
31 static bfd_reloc_status_type elf32_frv_relocate_hi16
32 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
33 static bfd_reloc_status_type elf32_frv_relocate_label24
34 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
35 static bfd_reloc_status_type elf32_frv_relocate_gprel12
36 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
37 bfd_byte *, bfd_vma));
38 static bfd_reloc_status_type elf32_frv_relocate_gprelu12
39 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
40 bfd_byte *, bfd_vma));
41 static bfd_reloc_status_type elf32_frv_relocate_gprello
42 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
43 bfd_byte *, bfd_vma));
44 static bfd_reloc_status_type elf32_frv_relocate_gprelhi
45 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
46 bfd_byte *, bfd_vma));
47 static reloc_howto_type *frv_reloc_type_lookup
48 PARAMS ((bfd *, bfd_reloc_code_real_type));
49 static void frv_info_to_howto_rela
50 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
51 static bfd_boolean elf32_frv_relocate_section
52 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
53 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
54 static bfd_boolean elf32_frv_add_symbol_hook
55 PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
56 const char **, flagword *, asection **, bfd_vma *));
57 static bfd_reloc_status_type frv_final_link_relocate
58 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
59 Elf_Internal_Rela *, bfd_vma));
60 static bfd_boolean elf32_frv_gc_sweep_hook
61 PARAMS ((bfd *, struct bfd_link_info *, asection *, const
62 Elf_Internal_Rela *));
63 static asection * elf32_frv_gc_mark_hook
64 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
65 struct elf_link_hash_entry *, Elf_Internal_Sym *));
66 static bfd_boolean elf32_frv_check_relocs
67 PARAMS ((bfd *, struct bfd_link_info *, asection *,
68 const Elf_Internal_Rela *));
69 static int elf32_frv_machine
71 static bfd_boolean elf32_frv_object_p
73 static bfd_boolean frv_elf_set_private_flags
74 PARAMS ((bfd *, flagword));
75 static bfd_boolean frv_elf_copy_private_bfd_data
76 PARAMS ((bfd *, bfd *));
77 static bfd_boolean frv_elf_merge_private_bfd_data
78 PARAMS ((bfd *, bfd *));
79 static bfd_boolean frv_elf_print_private_bfd_data
80 PARAMS ((bfd *, PTR));
82 static reloc_howto_type elf32_frv_howto_table [] =
84 /* This reloc does nothing. */
85 HOWTO (R_FRV_NONE, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 FALSE, /* pc_relative */
91 complain_overflow_bitfield, /* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_FRV_NONE", /* name */
94 FALSE, /* partial_inplace */
97 FALSE), /* pcrel_offset */
99 /* A 32 bit absolute relocation. */
100 HOWTO (R_FRV_32, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE, /* pc_relative */
106 complain_overflow_bitfield, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_FRV_32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
114 /* A 16 bit pc-relative relocation. */
115 HOWTO (R_FRV_LABEL16, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE, /* pc_relative */
121 complain_overflow_signed, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_FRV_LABEL16", /* name */
124 FALSE, /* partial_inplace */
125 0xffff, /* src_mask */
126 0xffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
129 /* A 24-bit pc-relative relocation. */
130 HOWTO (R_FRV_LABEL24, /* type */
132 2, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE, /* pc_relative */
136 complain_overflow_bitfield, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_FRV_LABEL24", /* name */
139 FALSE, /* partial_inplace */
140 0x7e03ffff, /* src_mask */
141 0x7e03ffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
144 HOWTO (R_FRV_LO16, /* type */
146 2, /* size (0 = byte, 1 = short, 2 = long) */
148 FALSE, /* pc_relative */
150 complain_overflow_dont, /* complain_on_overflow */
151 bfd_elf_generic_reloc, /* special_function */
152 "R_FRV_LO16", /* name */
153 FALSE, /* partial_inplace */
154 0xffff, /* src_mask */
155 0xffff, /* dst_mask */
156 FALSE), /* pcrel_offset */
158 HOWTO (R_FRV_HI16, /* type */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
162 FALSE, /* pc_relative */
164 complain_overflow_dont, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_FRV_HI16", /* name */
167 FALSE, /* partial_inplace */
168 0xffff, /* src_mask */
169 0xffff, /* dst_mask */
170 FALSE), /* pcrel_offset */
172 HOWTO (R_FRV_GPREL12, /* type */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
176 FALSE, /* pc_relative */
178 complain_overflow_dont, /* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_FRV_GPREL12", /* name */
181 FALSE, /* partial_inplace */
182 0xfff, /* src_mask */
183 0xfff, /* dst_mask */
184 FALSE), /* pcrel_offset */
186 HOWTO (R_FRV_GPRELU12, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE, /* pc_relative */
192 complain_overflow_dont, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_FRV_GPRELU12", /* name */
195 FALSE, /* partial_inplace */
196 0xfff, /* src_mask */
197 0x3f03f, /* dst_mask */
198 FALSE), /* pcrel_offset */
200 HOWTO (R_FRV_GPREL32, /* type */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
204 FALSE, /* pc_relative */
206 complain_overflow_dont, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_FRV_GPREL32", /* name */
209 FALSE, /* partial_inplace */
210 0xffffffff, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
214 HOWTO (R_FRV_GPRELHI, /* type */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
218 FALSE, /* pc_relative */
220 complain_overflow_dont, /* complain_on_overflow */
221 bfd_elf_generic_reloc, /* special_function */
222 "R_FRV_GPRELHI", /* name */
223 FALSE, /* partial_inplace */
224 0xffff, /* src_mask */
225 0xffff, /* dst_mask */
226 FALSE), /* pcrel_offset */
228 HOWTO (R_FRV_GPRELLO, /* type */
230 2, /* size (0 = byte, 1 = short, 2 = long) */
232 FALSE, /* pc_relative */
234 complain_overflow_dont, /* complain_on_overflow */
235 bfd_elf_generic_reloc, /* special_function */
236 "R_FRV_GPRELLO", /* name */
237 FALSE, /* partial_inplace */
238 0xffff, /* src_mask */
239 0xffff, /* dst_mask */
240 FALSE), /* pcrel_offset */
242 /* A 12-bit signed operand with the GOT offset for the address of
244 HOWTO (R_FRV_GOT12, /* type */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
248 FALSE, /* pc_relative */
250 complain_overflow_signed, /* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_FRV_GOT12", /* name */
253 FALSE, /* partial_inplace */
254 0xfff, /* src_mask */
255 0xfff, /* dst_mask */
256 FALSE), /* pcrel_offset */
258 /* The upper 16 bits of the GOT offset for the address of the
260 HOWTO (R_FRV_GOTHI, /* type */
262 2, /* size (0 = byte, 1 = short, 2 = long) */
264 FALSE, /* pc_relative */
266 complain_overflow_dont, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_FRV_GOTHI", /* name */
269 FALSE, /* partial_inplace */
270 0xffff, /* src_mask */
271 0xffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
274 /* The lower 16 bits of the GOT offset for the address of the
276 HOWTO (R_FRV_GOTLO, /* type */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_dont, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_FRV_GOTLO", /* name */
285 FALSE, /* partial_inplace */
286 0xffff, /* src_mask */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* The 32-bit address of the canonical descriptor of a function. */
291 HOWTO (R_FRV_FUNCDESC, /* type */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_FRV_FUNCDESC", /* name */
300 FALSE, /* partial_inplace */
301 0xffffffff, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* A 12-bit signed operand with the GOT offset for the address of
306 canonical descriptor of a function. */
307 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE, /* pc_relative */
313 complain_overflow_signed, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_FRV_FUNCDESC_GOT12", /* name */
316 FALSE, /* partial_inplace */
317 0xfff, /* src_mask */
318 0xfff, /* dst_mask */
319 FALSE), /* pcrel_offset */
321 /* The upper 16 bits of the GOT offset for the address of the
322 canonical descriptor of a function. */
323 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_dont, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_FRV_FUNCDESC_GOTHI", /* name */
332 FALSE, /* partial_inplace */
333 0xffff, /* src_mask */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 /* The lower 16 bits of the GOT offset for the address of the
338 canonical descriptor of a function. */
339 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE, /* pc_relative */
345 complain_overflow_dont, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* special_function */
347 "R_FRV_FUNCDESC_GOTLO", /* name */
348 FALSE, /* partial_inplace */
349 0xffff, /* src_mask */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
353 /* The 32-bit address of the canonical descriptor of a function. */
354 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE, /* pc_relative */
360 complain_overflow_bitfield, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_FRV_FUNCDESC_VALUE", /* name */
363 FALSE, /* partial_inplace */
364 0xffffffff, /* src_mask */
365 0xffffffff, /* dst_mask */
366 FALSE), /* pcrel_offset */
368 /* A 12-bit signed operand with the GOT offset for the address of
369 canonical descriptor of a function. */
370 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
374 FALSE, /* pc_relative */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_FRV_FUNCDESC_GOTOFF12", /* name */
379 FALSE, /* partial_inplace */
380 0xfff, /* src_mask */
381 0xfff, /* dst_mask */
382 FALSE), /* pcrel_offset */
384 /* The upper 16 bits of the GOT offset for the address of the
385 canonical descriptor of a function. */
386 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
390 FALSE, /* pc_relative */
392 complain_overflow_dont, /* complain_on_overflow */
393 bfd_elf_generic_reloc, /* special_function */
394 "R_FRV_FUNCDESC_GOTOFFHI", /* name */
395 FALSE, /* partial_inplace */
396 0xffff, /* src_mask */
397 0xffff, /* dst_mask */
398 FALSE), /* pcrel_offset */
400 /* The lower 16 bits of the GOT offset for the address of the
401 canonical descriptor of a function. */
402 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 FALSE, /* pc_relative */
408 complain_overflow_dont, /* complain_on_overflow */
409 bfd_elf_generic_reloc, /* special_function */
410 "R_FRV_FUNCDESC_GOTOFFLO", /* name */
411 FALSE, /* partial_inplace */
412 0xffff, /* src_mask */
413 0xffff, /* dst_mask */
414 FALSE), /* pcrel_offset */
416 /* A 12-bit signed operand with the GOT offset for the address of
418 HOWTO (R_FRV_GOTOFF12, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 FALSE, /* pc_relative */
424 complain_overflow_signed, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 "R_FRV_GOTOFF12", /* name */
427 FALSE, /* partial_inplace */
428 0xfff, /* src_mask */
429 0xfff, /* dst_mask */
430 FALSE), /* pcrel_offset */
432 /* The upper 16 bits of the GOT offset for the address of the
434 HOWTO (R_FRV_GOTOFFHI, /* type */
436 2, /* size (0 = byte, 1 = short, 2 = long) */
438 FALSE, /* pc_relative */
440 complain_overflow_dont, /* complain_on_overflow */
441 bfd_elf_generic_reloc, /* special_function */
442 "R_FRV_GOTOFFHI", /* name */
443 FALSE, /* partial_inplace */
444 0xffff, /* src_mask */
445 0xffff, /* dst_mask */
446 FALSE), /* pcrel_offset */
448 /* The lower 16 bits of the GOT offset for the address of the
450 HOWTO (R_FRV_GOTOFFLO, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_dont, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_FRV_GOTOFFLO", /* name */
459 FALSE, /* partial_inplace */
460 0xffff, /* src_mask */
461 0xffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
466 /* GNU extension to record C++ vtable hierarchy. */
467 static reloc_howto_type elf32_frv_vtinherit_howto =
468 HOWTO (R_FRV_GNU_VTINHERIT, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 NULL, /* special_function */
476 "R_FRV_GNU_VTINHERIT", /* name */
477 FALSE, /* partial_inplace */
480 FALSE); /* pcrel_offset */
482 /* GNU extension to record C++ vtable member usage. */
483 static reloc_howto_type elf32_frv_vtentry_howto =
484 HOWTO (R_FRV_GNU_VTENTRY, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont, /* complain_on_overflow */
491 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
492 "R_FRV_GNU_VTENTRY", /* name */
493 FALSE, /* partial_inplace */
496 FALSE); /* pcrel_offset */
498 /* The following 3 relocations are REL. The only difference to the
499 entries in the table above are that partial_inplace is TRUE. */
500 static reloc_howto_type elf32_frv_rel_32_howto =
501 HOWTO (R_FRV_32, /* type */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE, /* pc_relative */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_FRV_32", /* name */
510 TRUE, /* partial_inplace */
511 0xffffffff, /* src_mask */
512 0xffffffff, /* dst_mask */
513 FALSE); /* pcrel_offset */
515 static reloc_howto_type elf32_frv_rel_funcdesc_howto =
516 HOWTO (R_FRV_FUNCDESC, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE, /* pc_relative */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_FRV_FUNCDESC", /* name */
525 TRUE, /* partial_inplace */
526 0xffffffff, /* src_mask */
527 0xffffffff, /* dst_mask */
528 FALSE); /* pcrel_offset */
530 static reloc_howto_type elf32_frv_rel_funcdesc_value_howto =
531 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 FALSE, /* pc_relative */
537 complain_overflow_bitfield, /* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_FRV_FUNCDESC_VALUE", /* name */
540 TRUE, /* partial_inplace */
541 0xffffffff, /* src_mask */
542 0xffffffff, /* dst_mask */
543 FALSE); /* pcrel_offset */
546 /* Map BFD reloc types to FRV ELF reloc types. */
550 unsigned int bfd_reloc_val;
551 unsigned int frv_reloc_val;
554 static const struct frv_reloc_map frv_reloc_map [] =
556 { BFD_RELOC_NONE, R_FRV_NONE },
557 { BFD_RELOC_32, R_FRV_32 },
558 { BFD_RELOC_FRV_LABEL16, R_FRV_LABEL16 },
559 { BFD_RELOC_FRV_LABEL24, R_FRV_LABEL24 },
560 { BFD_RELOC_FRV_LO16, R_FRV_LO16 },
561 { BFD_RELOC_FRV_HI16, R_FRV_HI16 },
562 { BFD_RELOC_FRV_GPREL12, R_FRV_GPREL12 },
563 { BFD_RELOC_FRV_GPRELU12, R_FRV_GPRELU12 },
564 { BFD_RELOC_FRV_GPREL32, R_FRV_GPREL32 },
565 { BFD_RELOC_FRV_GPRELHI, R_FRV_GPRELHI },
566 { BFD_RELOC_FRV_GPRELLO, R_FRV_GPRELLO },
567 { BFD_RELOC_FRV_GOT12, R_FRV_GOT12 },
568 { BFD_RELOC_FRV_GOTHI, R_FRV_GOTHI },
569 { BFD_RELOC_FRV_GOTLO, R_FRV_GOTLO },
570 { BFD_RELOC_FRV_FUNCDESC, R_FRV_FUNCDESC },
571 { BFD_RELOC_FRV_FUNCDESC_GOT12, R_FRV_FUNCDESC_GOT12 },
572 { BFD_RELOC_FRV_FUNCDESC_GOTHI, R_FRV_FUNCDESC_GOTHI },
573 { BFD_RELOC_FRV_FUNCDESC_GOTLO, R_FRV_FUNCDESC_GOTLO },
574 { BFD_RELOC_FRV_FUNCDESC_VALUE, R_FRV_FUNCDESC_VALUE },
575 { BFD_RELOC_FRV_FUNCDESC_GOTOFF12, R_FRV_FUNCDESC_GOTOFF12 },
576 { BFD_RELOC_FRV_FUNCDESC_GOTOFFHI, R_FRV_FUNCDESC_GOTOFFHI },
577 { BFD_RELOC_FRV_FUNCDESC_GOTOFFLO, R_FRV_FUNCDESC_GOTOFFLO },
578 { BFD_RELOC_FRV_GOTOFF12, R_FRV_GOTOFF12 },
579 { BFD_RELOC_FRV_GOTOFFHI, R_FRV_GOTOFFHI },
580 { BFD_RELOC_FRV_GOTOFFLO, R_FRV_GOTOFFLO },
581 { BFD_RELOC_VTABLE_INHERIT, R_FRV_GNU_VTINHERIT },
582 { BFD_RELOC_VTABLE_ENTRY, R_FRV_GNU_VTENTRY },
586 extern const bfd_target bfd_elf32_frvfdpic_vec;
587 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec)
589 /* An extension of the elf hash table data structure, containing some
590 additional FRV-specific data. */
591 struct frvfdpic_elf_link_hash_table
593 struct elf_link_hash_table elf;
595 /* A pointer to the .got section. */
597 /* A pointer to the .rel.got section. */
599 /* A pointer to the .rofixup section. */
601 /* A pointer to the .plt section. */
603 /* A pointer to the .rel.plt section. */
605 /* GOT base offset. */
607 /* Location of the first non-lazy PLT entry, i.e., the number of
608 bytes taken by lazy PLT entries. */
610 /* A hash table holding information about which symbols were
611 referenced with which PIC-related relocations. */
612 struct htab *relocs_info;
615 /* Get the FRV ELF linker hash table from a link_info structure. */
617 #define frvfdpic_hash_table(info) \
618 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash))
620 #define frvfdpic_got_section(info) \
621 (frvfdpic_hash_table (info)->sgot)
622 #define frvfdpic_gotrel_section(info) \
623 (frvfdpic_hash_table (info)->sgotrel)
624 #define frvfdpic_gotfixup_section(info) \
625 (frvfdpic_hash_table (info)->sgotfixup)
626 #define frvfdpic_plt_section(info) \
627 (frvfdpic_hash_table (info)->splt)
628 #define frvfdpic_pltrel_section(info) \
629 (frvfdpic_hash_table (info)->spltrel)
630 #define frvfdpic_relocs_info(info) \
631 (frvfdpic_hash_table (info)->relocs_info)
632 #define frvfdpic_got_initial_offset(info) \
633 (frvfdpic_hash_table (info)->got0)
634 #define frvfdpic_plt_initial_offset(info) \
635 (frvfdpic_hash_table (info)->plt0)
637 /* Create an FRV ELF linker hash table. */
639 static struct bfd_link_hash_table *
640 frvfdpic_elf_link_hash_table_create (bfd *abfd)
642 struct frvfdpic_elf_link_hash_table *ret;
643 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table);
645 ret = bfd_zalloc (abfd, amt);
649 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
650 _bfd_elf_link_hash_newfunc))
656 return &ret->elf.root;
659 /* Decide whether a reference to a symbol can be resolved locally or
660 not. If the symbol is protected, we want the local address, but
661 its function descriptor must be assigned by the dynamic linker. */
662 #define FRVFDPIC_SYM_LOCAL(INFO, H) \
663 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
664 || ! elf_hash_table (INFO)->dynamic_sections_created \
665 || (/* The condition below is an ugly hack to get .scommon data to
666 be regarded as local. For some reason the
667 ELF_LINK_HASH_DEF_REGULAR bit is not set on such common
668 symbols, and the SEC_IS_COMMON bit is not set any longer
669 when we need to perform this test. Hopefully this
670 approximation is good enough. */ \
671 ((H)->root.type == bfd_link_hash_defined \
672 || (H)->root.type == bfd_link_hash_defweak) \
673 && (H)->root.u.def.section->output_section \
674 && ((H)->root.u.def.section->flags & SEC_LINKER_CREATED)))
675 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \
676 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
678 /* This structure collects information on what kind of GOT, PLT or
679 function descriptors are required by relocations that reference a
681 struct frvfdpic_relocs_info
683 /* The index of the symbol, as stored in the relocation r_info, if
684 we have a local symbol; -1 otherwise. */
688 /* The input bfd in which the symbol is defined, if it's a local
691 /* If symndx == -1, the hash table entry corresponding to a global
692 symbol (even if it turns out to bind locally, in which case it
693 should ideally be replaced with section's symndx + addend). */
694 struct elf_link_hash_entry *h;
696 /* The addend of the relocation that references the symbol. */
699 /* The fields above are used to identify an entry. The fields below
700 contain information on how an entry is used and, later on, which
701 locations it was assigned. */
702 /* The following 3 fields record whether the symbol+addend above was
703 ever referenced with a GOT relocation. The 12 suffix indicates a
704 GOT12 relocation; los is used for GOTLO relocations that are not
705 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
710 /* Whether a FUNCDESC relocation references symbol+addend. */
712 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
715 unsigned fdgothilo:1;
716 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
718 unsigned fdgofflos:1;
719 unsigned fdgoffhilo:1;
720 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
721 GOTOFFHI relocations. The addend doesn't really matter, since we
722 envision that this will only be used to check whether the symbol
723 is mapped to the same segment as the got. */
725 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
727 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
730 /* Whether we need a PLT entry for a symbol. Should be implied by
732 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */
734 /* Whether a function descriptor should be created in this link unit
735 for symbol+addend. Should be implied by something like:
736 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
737 || ((fd || fdgot12 || fdgotlos || fdgothilo)
738 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
740 /* Whether a lazy PLT entry is needed for this symbol+addend.
741 Should be implied by something like:
742 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)
743 && ! (info->flags & DF_BIND_NOW)) */
745 /* Whether we've already emitted GOT relocations and PLT entries as
746 needed for this symbol. */
749 /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE
750 relocations referencing the symbol. */
751 unsigned relocs32, relocsfd, relocsfdv;
753 /* The number of .rofixups entries and dynamic relocations allocated
754 for this symbol, minus any that might have already been used. */
755 unsigned fixups, dynrelocs;
757 /* The offsets of the GOT entries assigned to symbol+addend, to the
758 function descriptor's address, and to a function descriptor,
759 respectively. Should be zero if unassigned. The offsets are
760 counted from the value that will be assigned to the PIC register,
761 not from the beginning of the .got section. */
762 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
763 /* The offsets of the PLT entries assigned to symbol+addend,
764 non-lazy and lazy, respectively. If unassigned, should be
766 bfd_vma plt_entry, lzplt_entry;
769 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */
771 frvfdpic_relocs_info_hash (const void *entry_)
773 const struct frvfdpic_relocs_info *entry = entry_;
775 return (entry->symndx == -1
776 ? entry->d.h->root.root.hash
777 : entry->symndx + entry->d.abfd->id * 257) + entry->addend;
780 /* Test whether the key fields of two frvfdpic_relocs_info entries are
783 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2)
785 const struct frvfdpic_relocs_info *e1 = entry1;
786 const struct frvfdpic_relocs_info *e2 = entry2;
788 return e1->symndx == e2->symndx && e1->addend == e2->addend
789 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
792 /* Find or create an entry in a hash table HT that matches the key
793 fields of the given ENTRY. If it's not found, memory for a new
794 entry is allocated in ABFD's obstack. */
795 static struct frvfdpic_relocs_info *
796 frvfdpic_relocs_info_find (struct htab *ht,
798 const struct frvfdpic_relocs_info *entry,
799 enum insert_option insert)
801 struct frvfdpic_relocs_info **loc =
802 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
810 *loc = bfd_zalloc (abfd, sizeof (**loc));
815 (*loc)->symndx = entry->symndx;
816 (*loc)->d = entry->d;
817 (*loc)->addend = entry->addend;
818 (*loc)->plt_entry = (bfd_vma)-1;
819 (*loc)->lzplt_entry = (bfd_vma)-1;
824 /* Obtain the address of the entry in HT associated with H's symbol +
825 addend, creating a new entry if none existed. ABFD is only used
826 for memory allocation purposes. */
827 inline static struct frvfdpic_relocs_info *
828 frvfdpic_relocs_info_for_global (struct htab *ht,
830 struct elf_link_hash_entry *h,
832 enum insert_option insert)
834 struct frvfdpic_relocs_info entry;
838 entry.addend = addend;
840 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
843 /* Obtain the address of the entry in HT associated with the SYMNDXth
844 local symbol of the input bfd ABFD, plus the addend, creating a new
845 entry if none existed. */
846 inline static struct frvfdpic_relocs_info *
847 frvfdpic_relocs_info_for_local (struct htab *ht,
851 enum insert_option insert)
853 struct frvfdpic_relocs_info entry;
855 entry.symndx = symndx;
857 entry.addend = addend;
859 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
862 /* Merge fields set by check_relocs() of two entries that end up being
863 mapped to the same (presumably global) symbol. */
866 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2,
867 struct frvfdpic_relocs_info const *e1)
869 e2->got12 |= e1->got12;
870 e2->gotlos |= e1->gotlos;
871 e2->gothilo |= e1->gothilo;
873 e2->fdgot12 |= e1->fdgot12;
874 e2->fdgotlos |= e1->fdgotlos;
875 e2->fdgothilo |= e1->fdgothilo;
876 e2->fdgoff12 |= e1->fdgoff12;
877 e2->fdgofflos |= e1->fdgofflos;
878 e2->fdgoffhilo |= e1->fdgoffhilo;
879 e2->gotoff |= e1->gotoff;
880 e2->call |= e1->call;
884 /* These are set in _frvfdpic_count_got_plt_entries() or later, and this
885 function is only called in _frvfdpic_resolve_final_relocs_info(), that
886 runs just before it, so we don't have to worry about the fields
890 e2->privfd |= e1->privfd;
891 e2->lazyplt |= e1->lazyplt;
892 e2->done |= e1->done;
894 e2->relocs32 += e1->relocs32;
895 e2->relocsfd += e1->relocsfd;
896 e2->relocsfdv += e1->relocsfdv;
897 e2->fixups += e1->fixups;
898 e2->dynrelocs += e1->dynrelocs;
900 if (abs (e1->got_entry) < abs (e2->got_entry))
901 e2->got_entry = e1->got_entry;
902 if (abs (e1->fdgot_entry) < abs (e2->fdgot_entry))
903 e2->fdgot_entry = e1->fdgot_entry;
904 if (abs (e1->fd_entry) < abs (e2->fd_entry))
905 e2->fd_entry = e1->fd_entry;
907 if (e1->plt_entry < e2->plt_entry)
908 e2->plt_entry = e1->plt_entry;
909 if (e1->lzplt_entry < e2->lzplt_entry)
910 e2->lzplt_entry = e1->lzplt_entry;
914 /* Every block of 65535 lazy PLT entries shares a single call to the
915 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
916 32767, counting from 0). All other lazy PLT entries branch to it
917 in a single instruction. */
919 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
920 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767)
922 /* Add a dynamic relocation to the SRELOC section. */
924 inline static bfd_vma
925 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
926 int reloc_type, long dynindx, bfd_vma addend,
927 struct frvfdpic_relocs_info *entry)
929 Elf_Internal_Rela outrel;
930 bfd_vma reloc_offset;
932 outrel.r_offset = offset;
933 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
934 outrel.r_addend = addend;
936 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
937 BFD_ASSERT (reloc_offset < sreloc->_raw_size);
938 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
939 sreloc->contents + reloc_offset);
940 sreloc->reloc_count++;
942 /* If the entry's index is zero, this relocation was probably to a
943 linkonce section that got discarded. We reserved a dynamic
944 relocation, but it was for another entry than the one we got at
945 the time of emitting the relocation. Unfortunately there's no
946 simple way for us to catch this situation, since the relocation
947 is cleared right before calling relocate_section, at which point
948 we no longer know what the relocation used to point to. */
951 BFD_ASSERT (entry->dynrelocs > 0);
958 /* Add a fixup to the ROFIXUP section. */
961 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
962 struct frvfdpic_relocs_info *entry)
964 bfd_vma fixup_offset;
966 if (rofixup->flags & SEC_EXCLUDE)
969 fixup_offset = rofixup->reloc_count * 4;
970 if (rofixup->contents)
972 BFD_ASSERT (fixup_offset < rofixup->_raw_size);
973 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
975 rofixup->reloc_count++;
977 if (entry && entry->symndx)
979 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc
981 BFD_ASSERT (entry->fixups > 0);
988 /* Find the segment number in which OSEC, and output section, is
992 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
994 struct elf_segment_map *m;
995 Elf_Internal_Phdr *p;
997 /* Find the segment that contains the output_section. */
998 for (m = elf_tdata (output_bfd)->segment_map,
999 p = elf_tdata (output_bfd)->phdr;
1005 for (i = m->count - 1; i >= 0; i--)
1006 if (m->sections[i] == osec)
1013 return p - elf_tdata (output_bfd)->phdr;
1016 inline static bfd_boolean
1017 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
1019 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec);
1021 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1024 /* Generate relocations for GOT entries, function descriptors, and
1025 code for PLT and lazy PLT entries. */
1027 inline static bfd_boolean
1028 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry,
1030 struct bfd_link_info *info,
1032 Elf_Internal_Sym *sym,
1036 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1043 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
1045 /* If the symbol is dynamic, consider it for dynamic
1046 relocations, otherwise decay to section + offset. */
1047 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1048 dynindx = entry->d.h->dynindx;
1051 if (sec->output_section
1052 && ! bfd_is_abs_section (sec->output_section)
1053 && ! bfd_is_und_section (sec->output_section))
1054 dynindx = elf_section_data (sec->output_section)->dynindx;
1060 /* Generate relocation for GOT entry pointing to the symbol. */
1061 if (entry->got_entry)
1064 bfd_vma ad = addend;
1066 /* If the symbol is dynamic but binds locally, use
1068 if (sec && (entry->symndx != -1
1069 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1071 if (entry->symndx == -1)
1072 ad += entry->d.h->root.u.def.value;
1074 ad += sym->st_value;
1075 ad += sec->output_offset;
1076 if (sec->output_section && elf_section_data (sec->output_section))
1077 idx = elf_section_data (sec->output_section)->dynindx;
1082 /* If we're linking an executable at a fixed address, we can
1083 omit the dynamic relocation as long as the symbol is local to
1085 if (info->executable && !info->pie
1086 && (entry->symndx != -1
1087 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1090 ad += sec->output_section->vma;
1091 if (entry->symndx != -1
1092 || entry->d.h->root.type != bfd_link_hash_undefweak)
1093 _frvfdpic_add_rofixup (output_bfd,
1094 frvfdpic_gotfixup_section (info),
1095 frvfdpic_got_section (info)->output_section
1097 + frvfdpic_got_section (info)->output_offset
1098 + frvfdpic_got_initial_offset (info)
1099 + entry->got_entry, entry);
1102 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info),
1103 _bfd_elf_section_offset
1105 frvfdpic_got_section (info),
1106 frvfdpic_got_initial_offset (info)
1108 + frvfdpic_got_section (info)
1109 ->output_section->vma
1110 + frvfdpic_got_section (info)->output_offset,
1111 R_FRV_32, idx, ad, entry);
1113 bfd_put_32 (output_bfd, ad,
1114 frvfdpic_got_section (info)->contents
1115 + frvfdpic_got_initial_offset (info)
1116 + entry->got_entry);
1119 /* Generate relocation for GOT entry pointing to a canonical
1120 function descriptor. */
1121 if (entry->fdgot_entry)
1126 if (! (entry->symndx == -1
1127 && entry->d.h->root.type == bfd_link_hash_undefweak
1128 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1130 /* If the symbol is dynamic and there may be dynamic symbol
1131 resolution because we are, or are linked with, a shared
1132 library, emit a FUNCDESC relocation such that the dynamic
1133 linker will allocate the function descriptor. If the
1134 symbol needs a non-local function descriptor but binds
1135 locally (e.g., its visibility is protected, emit a
1136 dynamic relocation decayed to section+offset. */
1137 if (entry->symndx == -1
1138 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
1139 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)
1140 && !(info->executable && !info->pie))
1142 reloc = R_FRV_FUNCDESC;
1143 idx = elf_section_data (entry->d.h->root.u.def.section
1144 ->output_section)->dynindx;
1145 ad = entry->d.h->root.u.def.section->output_offset
1146 + entry->d.h->root.u.def.value;
1148 else if (entry->symndx == -1
1149 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
1151 reloc = R_FRV_FUNCDESC;
1159 /* Otherwise, we know we have a private function descriptor,
1160 so reference it directly. */
1161 if (elf_hash_table (info)->dynamic_sections_created)
1162 BFD_ASSERT (entry->privfd);
1164 idx = elf_section_data (frvfdpic_got_section (info)
1165 ->output_section)->dynindx;
1166 ad = frvfdpic_got_section (info)->output_offset
1167 + frvfdpic_got_initial_offset (info) + entry->fd_entry;
1170 /* If there is room for dynamic symbol resolution, emit the
1171 dynamic relocation. However, if we're linking an
1172 executable at a fixed location, we won't have emitted a
1173 dynamic symbol entry for the got section, so idx will be
1174 zero, which means we can and should compute the address
1175 of the private descriptor ourselves. */
1176 if (info->executable && !info->pie
1177 && (entry->symndx != -1
1178 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
1180 ad += frvfdpic_got_section (info)->output_section->vma;
1181 _frvfdpic_add_rofixup (output_bfd,
1182 frvfdpic_gotfixup_section (info),
1183 frvfdpic_got_section (info)
1184 ->output_section->vma
1185 + frvfdpic_got_section (info)
1187 + frvfdpic_got_initial_offset (info)
1188 + entry->fdgot_entry, entry);
1191 _frvfdpic_add_dyn_reloc (output_bfd,
1192 frvfdpic_gotrel_section (info),
1193 _bfd_elf_section_offset
1195 frvfdpic_got_section (info),
1196 frvfdpic_got_initial_offset (info)
1197 + entry->fdgot_entry)
1198 + frvfdpic_got_section (info)
1199 ->output_section->vma
1200 + frvfdpic_got_section (info)
1202 reloc, idx, ad, entry);
1205 bfd_put_32 (output_bfd, ad,
1206 frvfdpic_got_section (info)->contents
1207 + frvfdpic_got_initial_offset (info)
1208 + entry->fdgot_entry);
1211 /* Generate relocation to fill in a private function descriptor in
1213 if (entry->fd_entry)
1216 bfd_vma ad = addend;
1218 long lowword, highword;
1220 /* If the symbol is dynamic but binds locally, use
1222 if (sec && (entry->symndx != -1
1223 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1225 if (entry->symndx == -1)
1226 ad += entry->d.h->root.u.def.value;
1228 ad += sym->st_value;
1229 ad += sec->output_offset;
1230 if (sec->output_section && elf_section_data (sec->output_section))
1231 idx = elf_section_data (sec->output_section)->dynindx;
1236 /* If we're linking an executable at a fixed address, we can
1237 omit the dynamic relocation as long as the symbol is local to
1239 if (info->executable && !info->pie
1240 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1243 ad += sec->output_section->vma;
1245 if (entry->symndx != -1
1246 || entry->d.h->root.type != bfd_link_hash_undefweak)
1248 _frvfdpic_add_rofixup (output_bfd,
1249 frvfdpic_gotfixup_section (info),
1250 frvfdpic_got_section (info)
1251 ->output_section->vma
1252 + frvfdpic_got_section (info)
1254 + frvfdpic_got_initial_offset (info)
1255 + entry->fd_entry, entry);
1256 _frvfdpic_add_rofixup (output_bfd,
1257 frvfdpic_gotfixup_section (info),
1258 frvfdpic_got_section (info)
1259 ->output_section->vma
1260 + frvfdpic_got_section (info)
1262 + frvfdpic_got_initial_offset (info)
1263 + entry->fd_entry + 4, entry);
1269 _frvfdpic_add_dyn_reloc (output_bfd,
1271 ? frvfdpic_pltrel_section (info)
1272 : frvfdpic_gotrel_section (info),
1273 _bfd_elf_section_offset
1275 frvfdpic_got_section (info),
1276 frvfdpic_got_initial_offset (info)
1278 + frvfdpic_got_section (info)
1279 ->output_section->vma
1280 + frvfdpic_got_section (info)
1282 R_FRV_FUNCDESC_VALUE, idx, ad, entry);
1285 /* If we've omitted the dynamic relocation, just emit the fixed
1286 addresses of the symbol and of the local GOT base offset. */
1287 if (info->executable && !info->pie && sec && sec->output_section)
1290 highword = frvfdpic_got_section (info)->output_section->vma
1291 + frvfdpic_got_section (info)->output_offset
1292 + frvfdpic_got_initial_offset (info);
1294 else if (entry->lazyplt)
1299 fd_lazy_rel_offset = ofst;
1301 /* A function descriptor used for lazy or local resolving is
1302 initialized such that its high word contains the output
1303 section index in which the PLT entries are located, and
1304 the low word contains the address of the lazy PLT entry
1305 entry point, that must be within the memory region
1306 assigned to that section. */
1307 lowword = entry->lzplt_entry + 4
1308 + frvfdpic_plt_section (info)->output_offset
1309 + frvfdpic_plt_section (info)->output_section->vma;
1310 highword = _frvfdpic_osec_to_segment
1311 (output_bfd, frvfdpic_plt_section (info)->output_section);
1315 /* A function descriptor for a local function gets the index
1316 of the section. For a non-local function, it's
1319 if (entry->symndx == -1 && entry->d.h->dynindx != -1
1320 && entry->d.h->dynindx == idx)
1323 highword = _frvfdpic_osec_to_segment
1324 (output_bfd, sec->output_section);
1327 bfd_put_32 (output_bfd, lowword,
1328 frvfdpic_got_section (info)->contents
1329 + frvfdpic_got_initial_offset (info)
1331 bfd_put_32 (output_bfd, highword,
1332 frvfdpic_got_section (info)->contents
1333 + frvfdpic_got_initial_offset (info)
1334 + entry->fd_entry + 4);
1337 /* Generate code for the PLT entry. */
1338 if (entry->plt_entry != (bfd_vma) -1)
1340 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents
1343 BFD_ASSERT (entry->fd_entry);
1345 /* Figure out what kind of PLT entry we need, depending on the
1346 location of the function descriptor within the GOT. */
1347 if (entry->fd_entry >= -(1 << (12 - 1))
1348 && entry->fd_entry < (1 << (12 - 1)))
1350 /* lddi @(gr15, fd_entry), gr14 */
1351 bfd_put_32 (output_bfd,
1352 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)),
1358 if (entry->fd_entry >= -(1 << (16 - 1))
1359 && entry->fd_entry < (1 << (16 - 1)))
1361 /* setlos lo(fd_entry), gr14 */
1362 bfd_put_32 (output_bfd,
1364 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1370 /* sethi.p hi(fd_entry), gr14
1371 setlo lo(fd_entry), gr14 */
1372 bfd_put_32 (output_bfd,
1374 | ((entry->fd_entry >> 16)
1375 & (((bfd_vma)1 << 16) - 1)),
1377 bfd_put_32 (output_bfd,
1379 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1383 /* ldd @(gr14,gr15),gr14 */
1384 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code);
1387 /* jmpl @(gr14,gr0) */
1388 bfd_put_32 (output_bfd, 0x8030e000, plt_code);
1391 /* Generate code for the lazy PLT entry. */
1392 if (entry->lzplt_entry != (bfd_vma) -1)
1394 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents
1395 + entry->lzplt_entry;
1396 bfd_vma resolverStub_addr;
1398 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1401 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE
1402 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC;
1403 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info))
1404 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12;
1406 if (entry->lzplt_entry == resolverStub_addr)
1408 /* This is a lazy PLT entry that includes a resolver call. */
1409 /* ldd @(gr15,gr0), gr4
1411 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code);
1412 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4);
1416 /* bra resolverStub */
1417 bfd_put_32 (output_bfd,
1419 | (((resolverStub_addr - entry->lzplt_entry)
1420 / 4) & (((bfd_vma)1 << 16) - 1)),
1428 /* Handle an FRV small data reloc. */
1430 static bfd_reloc_status_type
1431 elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation,
1433 struct bfd_link_info *info;
1435 asection *input_section;
1436 Elf_Internal_Rela *relocation;
1442 struct bfd_link_hash_entry *h;
1444 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1446 gp = (h->u.def.value
1447 + h->u.def.section->output_section->vma
1448 + h->u.def.section->output_offset);
1450 value -= input_section->output_section->vma;
1451 value -= (gp - input_section->output_section->vma);
1453 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1455 value += relocation->r_addend;
1457 if ((long) value > 0x7ff || (long) value < -0x800)
1458 return bfd_reloc_overflow;
1460 bfd_put_32 (input_bfd,
1461 (insn & 0xfffff000) | (value & 0xfff),
1462 contents + relocation->r_offset);
1464 return bfd_reloc_ok;
1467 /* Handle an FRV small data reloc. for the u12 field. */
1469 static bfd_reloc_status_type
1470 elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation,
1472 struct bfd_link_info *info;
1474 asection *input_section;
1475 Elf_Internal_Rela *relocation;
1481 struct bfd_link_hash_entry *h;
1484 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1486 gp = (h->u.def.value
1487 + h->u.def.section->output_section->vma
1488 + h->u.def.section->output_offset);
1490 value -= input_section->output_section->vma;
1491 value -= (gp - input_section->output_section->vma);
1493 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1495 value += relocation->r_addend;
1497 if ((long) value > 0x7ff || (long) value < -0x800)
1498 return bfd_reloc_overflow;
1500 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
1502 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f);
1504 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1506 return bfd_reloc_ok;
1509 /* Handle an FRV ELF HI16 reloc. */
1511 static bfd_reloc_status_type
1512 elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value)
1514 Elf_Internal_Rela *relhi;
1520 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
1522 value += relhi->r_addend;
1523 value = ((value >> 16) & 0xffff);
1525 insn = (insn & 0xffff0000) | value;
1527 if ((long) value > 0xffff || (long) value < -0x10000)
1528 return bfd_reloc_overflow;
1530 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
1531 return bfd_reloc_ok;
1534 static bfd_reloc_status_type
1535 elf32_frv_relocate_lo16 (input_bfd, rello, contents, value)
1537 Elf_Internal_Rela *rello;
1543 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1545 value += rello->r_addend;
1546 value = value & 0xffff;
1548 insn = (insn & 0xffff0000) | value;
1550 if ((long) value > 0xffff || (long) value < -0x10000)
1551 return bfd_reloc_overflow;
1553 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1554 return bfd_reloc_ok;
1557 /* Perform the relocation for the CALL label24 instruction. */
1559 static bfd_reloc_status_type
1560 elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value)
1562 asection *input_section;
1563 Elf_Internal_Rela *rello;
1571 /* The format for the call instruction is:
1573 0 000000 0001111 000000000000000000
1574 label6 opcode label18
1576 The branch calculation is: pc + (4*label24)
1577 where label24 is the concatenation of label6 and label18. */
1579 /* Grab the instruction. */
1580 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1582 value -= input_section->output_section->vma + input_section->output_offset;
1583 value -= rello->r_offset;
1584 value += rello->r_addend;
1588 label6 = value & 0xfc0000;
1589 label6 = label6 << 7;
1591 label18 = value & 0x3ffff;
1593 insn = insn & 0x803c0000;
1594 insn = insn | label6;
1595 insn = insn | label18;
1597 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1599 return bfd_reloc_ok;
1602 static bfd_reloc_status_type
1603 elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation,
1605 struct bfd_link_info *info;
1607 asection *input_section;
1608 Elf_Internal_Rela *relocation;
1614 struct bfd_link_hash_entry *h;
1616 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1618 gp = (h->u.def.value
1619 + h->u.def.section->output_section->vma
1620 + h->u.def.section->output_offset);
1622 value -= input_section->output_section->vma;
1623 value -= (gp - input_section->output_section->vma);
1624 value += relocation->r_addend;
1625 value = ((value >> 16) & 0xffff);
1627 if ((long) value > 0xffff || (long) value < -0x10000)
1628 return bfd_reloc_overflow;
1630 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1631 insn = (insn & 0xffff0000) | value;
1633 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1634 return bfd_reloc_ok;
1637 static bfd_reloc_status_type
1638 elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation,
1640 struct bfd_link_info *info;
1642 asection *input_section;
1643 Elf_Internal_Rela *relocation;
1649 struct bfd_link_hash_entry *h;
1651 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1653 gp = (h->u.def.value
1654 + h->u.def.section->output_section->vma
1655 + h->u.def.section->output_offset);
1657 value -= input_section->output_section->vma;
1658 value -= (gp - input_section->output_section->vma);
1659 value += relocation->r_addend;
1660 value = value & 0xffff;
1662 if ((long) value > 0xffff || (long) value < -0x10000)
1663 return bfd_reloc_overflow;
1665 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1666 insn = (insn & 0xffff0000) | value;
1668 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1670 return bfd_reloc_ok;
1673 static reloc_howto_type *
1674 frv_reloc_type_lookup (abfd, code)
1675 bfd *abfd ATTRIBUTE_UNUSED;
1676 bfd_reloc_code_real_type code;
1683 case BFD_RELOC_NONE:
1684 return &elf32_frv_howto_table[ (int) R_FRV_NONE];
1687 if (elf_elfheader (abfd)->e_type == ET_EXEC
1688 || elf_elfheader (abfd)->e_type == ET_DYN)
1689 return &elf32_frv_rel_32_howto;
1691 case BFD_RELOC_CTOR:
1692 return &elf32_frv_howto_table[ (int) R_FRV_32];
1694 case BFD_RELOC_FRV_LABEL16:
1695 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16];
1697 case BFD_RELOC_FRV_LABEL24:
1698 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24];
1700 case BFD_RELOC_FRV_LO16:
1701 return &elf32_frv_howto_table[ (int) R_FRV_LO16];
1703 case BFD_RELOC_FRV_HI16:
1704 return &elf32_frv_howto_table[ (int) R_FRV_HI16];
1706 case BFD_RELOC_FRV_GPREL12:
1707 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12];
1709 case BFD_RELOC_FRV_GPRELU12:
1710 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12];
1712 case BFD_RELOC_FRV_GPREL32:
1713 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32];
1715 case BFD_RELOC_FRV_GPRELHI:
1716 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI];
1718 case BFD_RELOC_FRV_GPRELLO:
1719 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO];
1721 case BFD_RELOC_FRV_GOT12:
1722 return &elf32_frv_howto_table[ (int) R_FRV_GOT12];
1724 case BFD_RELOC_FRV_GOTHI:
1725 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI];
1727 case BFD_RELOC_FRV_GOTLO:
1728 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO];
1730 case BFD_RELOC_FRV_FUNCDESC:
1731 if (elf_elfheader (abfd)->e_type == ET_EXEC
1732 || elf_elfheader (abfd)->e_type == ET_DYN)
1733 return &elf32_frv_rel_funcdesc_howto;
1734 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC];
1736 case BFD_RELOC_FRV_FUNCDESC_GOT12:
1737 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12];
1739 case BFD_RELOC_FRV_FUNCDESC_GOTHI:
1740 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI];
1742 case BFD_RELOC_FRV_FUNCDESC_GOTLO:
1743 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO];
1745 case BFD_RELOC_FRV_FUNCDESC_VALUE:
1746 if (elf_elfheader (abfd)->e_type == ET_EXEC
1747 || elf_elfheader (abfd)->e_type == ET_DYN)
1748 return &elf32_frv_rel_funcdesc_value_howto;
1749 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE];
1751 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12:
1752 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12];
1754 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI:
1755 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI];
1757 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO:
1758 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO];
1760 case BFD_RELOC_FRV_GOTOFF12:
1761 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12];
1763 case BFD_RELOC_FRV_GOTOFFHI:
1764 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI];
1766 case BFD_RELOC_FRV_GOTOFFLO:
1767 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO];
1769 case BFD_RELOC_VTABLE_INHERIT:
1770 return &elf32_frv_vtinherit_howto;
1772 case BFD_RELOC_VTABLE_ENTRY:
1773 return &elf32_frv_vtentry_howto;
1779 /* Set the howto pointer for an FRV ELF reloc. */
1782 frv_info_to_howto_rela (abfd, cache_ptr, dst)
1783 bfd *abfd ATTRIBUTE_UNUSED;
1785 Elf_Internal_Rela *dst;
1787 unsigned int r_type;
1789 r_type = ELF32_R_TYPE (dst->r_info);
1792 case R_FRV_GNU_VTINHERIT:
1793 cache_ptr->howto = &elf32_frv_vtinherit_howto;
1796 case R_FRV_GNU_VTENTRY:
1797 cache_ptr->howto = &elf32_frv_vtentry_howto;
1801 cache_ptr->howto = & elf32_frv_howto_table [r_type];
1806 /* Set the howto pointer for an FRV ELF REL reloc. */
1808 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1809 arelent *cache_ptr, Elf_Internal_Rela *dst)
1811 unsigned int r_type;
1813 r_type = ELF32_R_TYPE (dst->r_info);
1817 cache_ptr->howto = &elf32_frv_rel_32_howto;
1820 case R_FRV_FUNCDESC:
1821 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto;
1824 case R_FRV_FUNCDESC_VALUE:
1825 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto;
1829 cache_ptr->howto = NULL;
1834 /* Perform a single relocation. By default we use the standard BFD
1835 routines, but a few relocs, we have to do them ourselves. */
1837 static bfd_reloc_status_type
1838 frv_final_link_relocate (howto, input_bfd, input_section, contents, rel,
1840 reloc_howto_type *howto;
1842 asection *input_section;
1844 Elf_Internal_Rela *rel;
1847 return _bfd_final_link_relocate (howto, input_bfd, input_section,
1848 contents, rel->r_offset, relocation,
1853 /* Relocate an FRV ELF section.
1855 The RELOCATE_SECTION function is called by the new ELF backend linker
1856 to handle the relocations for a section.
1858 The relocs are always passed as Rela structures; if the section
1859 actually uses Rel structures, the r_addend field will always be
1862 This function is responsible for adjusting the section contents as
1863 necessary, and (if using Rela relocs and generating a relocatable
1864 output file) adjusting the reloc addend as necessary.
1866 This function does not have to worry about setting the reloc
1867 address or the reloc symbol index.
1869 LOCAL_SYMS is a pointer to the swapped in local symbols.
1871 LOCAL_SECTIONS is an array giving the section in the input file
1872 corresponding to the st_shndx field of each local symbol.
1874 The global hash table entry for the global symbols can be found
1875 via elf_sym_hashes (input_bfd).
1877 When generating relocatable output, this function must handle
1878 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1879 going to be the section symbol corresponding to the output
1880 section, which means that the addend must be adjusted
1884 elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section,
1885 contents, relocs, local_syms, local_sections)
1886 bfd *output_bfd ATTRIBUTE_UNUSED;
1887 struct bfd_link_info *info;
1889 asection *input_section;
1891 Elf_Internal_Rela *relocs;
1892 Elf_Internal_Sym *local_syms;
1893 asection **local_sections;
1895 Elf_Internal_Shdr *symtab_hdr;
1896 struct elf_link_hash_entry **sym_hashes;
1897 Elf_Internal_Rela *rel;
1898 Elf_Internal_Rela *relend;
1899 unsigned isec_segment, got_segment, plt_segment, gprel_segment,
1901 int silence_segment_error = !(info->shared || info->pie);
1903 if (info->relocatable)
1906 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1907 sym_hashes = elf_sym_hashes (input_bfd);
1908 relend = relocs + input_section->reloc_count;
1910 isec_segment = _frvfdpic_osec_to_segment (output_bfd,
1911 input_section->output_section);
1912 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info))
1913 got_segment = _frvfdpic_osec_to_segment (output_bfd,
1914 frvfdpic_got_section (info)
1918 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info))
1919 gprel_segment = _frvfdpic_osec_to_segment (output_bfd,
1920 frvfdpic_gotfixup_section (info)
1924 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created)
1925 plt_segment = _frvfdpic_osec_to_segment (output_bfd,
1926 frvfdpic_plt_section (info)
1931 for (rel = relocs; rel < relend; rel ++)
1933 reloc_howto_type *howto;
1934 unsigned long r_symndx;
1935 Elf_Internal_Sym *sym;
1937 struct elf_link_hash_entry *h;
1939 bfd_reloc_status_type r;
1940 const char * name = NULL;
1943 struct frvfdpic_relocs_info *picrel;
1944 bfd_vma orig_addend = rel->r_addend;
1946 r_type = ELF32_R_TYPE (rel->r_info);
1948 if ( r_type == R_FRV_GNU_VTINHERIT
1949 || r_type == R_FRV_GNU_VTENTRY)
1952 /* This is a final link. */
1953 r_symndx = ELF32_R_SYM (rel->r_info);
1954 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info);
1959 if (r_symndx < symtab_hdr->sh_info)
1961 sym = local_syms + r_symndx;
1962 osec = sec = local_sections [r_symndx];
1963 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1965 name = bfd_elf_string_from_elf_section
1966 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1967 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1971 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
1973 while (h->root.type == bfd_link_hash_indirect
1974 || h->root.type == bfd_link_hash_warning)
1975 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1977 name = h->root.root.string;
1979 if ((h->root.type == bfd_link_hash_defined
1980 || h->root.type == bfd_link_hash_defweak)
1981 && ! FRVFDPIC_SYM_LOCAL (info, h))
1987 if (h->root.type == bfd_link_hash_defined
1988 || h->root.type == bfd_link_hash_defweak)
1990 sec = h->root.u.def.section;
1991 relocation = (h->root.u.def.value
1992 + sec->output_section->vma
1993 + sec->output_offset);
1995 else if (h->root.type == bfd_link_hash_undefweak)
1999 else if (info->unresolved_syms_in_objects == RM_IGNORE
2000 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2004 if (! ((*info->callbacks->undefined_symbol)
2005 (info, h->root.root.string, input_bfd,
2006 input_section, rel->r_offset,
2007 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2008 || ELF_ST_VISIBILITY (h->other)))))
2019 if (! IS_FDPIC (output_bfd))
2025 case R_FRV_FUNCDESC_GOT12:
2026 case R_FRV_FUNCDESC_GOTHI:
2027 case R_FRV_FUNCDESC_GOTLO:
2028 case R_FRV_GOTOFF12:
2029 case R_FRV_GOTOFFHI:
2030 case R_FRV_GOTOFFLO:
2031 case R_FRV_FUNCDESC_GOTOFF12:
2032 case R_FRV_FUNCDESC_GOTOFFHI:
2033 case R_FRV_FUNCDESC_GOTOFFLO:
2034 case R_FRV_FUNCDESC:
2035 case R_FRV_FUNCDESC_VALUE:
2037 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info
2038 (info), input_bfd, h,
2039 orig_addend, INSERT);
2041 /* In order to find the entry we created before, we must
2042 use the original addend, not the one that may have been
2043 modified by _bfd_elf_rela_local_sym(). */
2044 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
2045 (info), input_bfd, r_symndx,
2046 orig_addend, INSERT);
2050 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2054 (*_bfd_error_handler)
2055 (_("%s: relocation at `%s+0x%x' references symbol `%s' with nonzero addend"),
2056 bfd_archive_filename (input_bfd), input_section->name,
2057 rel->r_offset, name);
2067 if (h && ! FRVFDPIC_SYM_LOCAL (info, h))
2069 info->callbacks->warning
2070 (info, _("relocation references symbol not defined in the module"),
2071 name, input_bfd, input_section, rel->r_offset);
2080 check_segment[0] = isec_segment;
2081 if (! IS_FDPIC (output_bfd))
2082 check_segment[1] = isec_segment;
2083 else if (picrel->plt)
2085 relocation = frvfdpic_plt_section (info)->output_section->vma
2086 + frvfdpic_plt_section (info)->output_offset
2087 + picrel->plt_entry;
2088 check_segment[1] = plt_segment;
2090 /* We don't want to warn on calls to undefined weak symbols,
2091 as calls to them must be protected by non-NULL tests
2092 anyway, and unprotected calls would invoke undefined
2094 else if (picrel->symndx == -1
2095 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2096 check_segment[1] = check_segment[0];
2098 check_segment[1] = sec
2099 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2106 relocation = picrel->got_entry;
2107 check_segment[0] = check_segment[1] = got_segment;
2110 case R_FRV_FUNCDESC_GOT12:
2111 case R_FRV_FUNCDESC_GOTHI:
2112 case R_FRV_FUNCDESC_GOTLO:
2113 relocation = picrel->fdgot_entry;
2114 check_segment[0] = check_segment[1] = got_segment;
2117 case R_FRV_GOTOFFHI:
2118 case R_FRV_GOTOFF12:
2119 case R_FRV_GOTOFFLO:
2120 relocation -= frvfdpic_got_section (info)->output_section->vma
2121 + frvfdpic_got_section (info)->output_offset
2122 + frvfdpic_got_initial_offset (info);
2123 check_segment[0] = got_segment;
2124 check_segment[1] = sec
2125 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2129 case R_FRV_FUNCDESC_GOTOFF12:
2130 case R_FRV_FUNCDESC_GOTOFFHI:
2131 case R_FRV_FUNCDESC_GOTOFFLO:
2132 relocation = picrel->fd_entry;
2133 check_segment[0] = check_segment[1] = got_segment;
2136 case R_FRV_FUNCDESC:
2139 bfd_vma addend = rel->r_addend;
2141 if (! (h && h->root.type == bfd_link_hash_undefweak
2142 && FRVFDPIC_SYM_LOCAL (info, h)))
2144 /* If the symbol is dynamic and there may be dynamic
2145 symbol resolution because we are or are linked with a
2146 shared library, emit a FUNCDESC relocation such that
2147 the dynamic linker will allocate the function
2148 descriptor. If the symbol needs a non-local function
2149 descriptor but binds locally (e.g., its visibility is
2150 protected, emit a dynamic relocation decayed to
2152 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)
2153 && FRVFDPIC_SYM_LOCAL (info, h)
2154 && !(info->executable && !info->pie))
2156 dynindx = elf_section_data (h->root.u.def.section
2157 ->output_section)->dynindx;
2158 addend += h->root.u.def.section->output_offset
2159 + h->root.u.def.value;
2161 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h))
2165 info->callbacks->warning
2166 (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"),
2167 name, input_bfd, input_section, rel->r_offset);
2170 dynindx = h->dynindx;
2174 /* Otherwise, we know we have a private function
2175 descriptor, so reference it directly. */
2176 BFD_ASSERT (picrel->privfd);
2178 dynindx = elf_section_data (frvfdpic_got_section (info)
2179 ->output_section)->dynindx;
2180 addend = frvfdpic_got_section (info)->output_offset
2181 + frvfdpic_got_initial_offset (info)
2185 /* If there is room for dynamic symbol resolution, emit
2186 the dynamic relocation. However, if we're linking an
2187 executable at a fixed location, we won't have emitted a
2188 dynamic symbol entry for the got section, so idx will
2189 be zero, which means we can and should compute the
2190 address of the private descriptor ourselves. */
2191 if (info->executable && !info->pie
2192 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h)))
2194 addend += frvfdpic_got_section (info)->output_section->vma;
2195 if ((bfd_get_section_flags (output_bfd,
2196 input_section->output_section)
2197 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2199 if (_frvfdpic_osec_readonly_p (output_bfd,
2203 info->callbacks->warning
2205 _("cannot emit fixups in read-only section"),
2206 name, input_bfd, input_section, rel->r_offset);
2209 _frvfdpic_add_rofixup (output_bfd,
2210 frvfdpic_gotfixup_section
2212 _bfd_elf_section_offset
2214 input_section, rel->r_offset)
2216 ->output_section->vma
2217 + input_section->output_offset,
2221 else if ((bfd_get_section_flags (output_bfd,
2222 input_section->output_section)
2223 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2225 if (_frvfdpic_osec_readonly_p (output_bfd,
2229 info->callbacks->warning
2231 _("cannot emit dynamic relocations in read-only section"),
2232 name, input_bfd, input_section, rel->r_offset);
2235 _frvfdpic_add_dyn_reloc (output_bfd,
2236 frvfdpic_gotrel_section (info),
2237 _bfd_elf_section_offset
2239 input_section, rel->r_offset)
2241 ->output_section->vma
2242 + input_section->output_offset,
2243 r_type, dynindx, addend, picrel);
2246 addend += frvfdpic_got_section (info)->output_section->vma;
2249 /* We want the addend in-place because dynamic
2250 relocations are REL. Setting relocation to it should
2251 arrange for it to be installed. */
2252 relocation = addend - rel->r_addend;
2254 check_segment[0] = check_segment[1] = got_segment;
2258 if (! IS_FDPIC (output_bfd))
2260 check_segment[0] = check_segment[1] = -1;
2264 case R_FRV_FUNCDESC_VALUE:
2267 bfd_vma addend = rel->r_addend;
2269 /* If the symbol is dynamic but binds locally, use
2271 if (h && ! FRVFDPIC_SYM_LOCAL (info, h))
2273 if (addend && r_type == R_FRV_FUNCDESC_VALUE)
2275 info->callbacks->warning
2276 (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2277 name, input_bfd, input_section, rel->r_offset);
2280 dynindx = h->dynindx;
2285 addend += h->root.u.def.value;
2287 addend += sym->st_value;
2289 addend += osec->output_offset;
2290 if (osec && osec->output_section
2291 && ! bfd_is_abs_section (osec->output_section)
2292 && ! bfd_is_und_section (osec->output_section))
2293 dynindx = elf_section_data (osec->output_section)->dynindx;
2298 /* If we're linking an executable at a fixed address, we
2299 can omit the dynamic relocation as long as the symbol
2300 is defined in the current link unit (which is implied
2301 by its output section not being NULL). */
2302 if (info->executable && !info->pie
2303 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
2306 addend += osec->output_section->vma;
2307 if (IS_FDPIC (input_bfd)
2308 && (bfd_get_section_flags (output_bfd,
2309 input_section->output_section)
2310 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2312 if (_frvfdpic_osec_readonly_p (output_bfd,
2316 info->callbacks->warning
2318 _("cannot emit fixups in read-only section"),
2319 name, input_bfd, input_section, rel->r_offset);
2322 if (!h || h->root.type != bfd_link_hash_undefweak)
2324 _frvfdpic_add_rofixup (output_bfd,
2325 frvfdpic_gotfixup_section
2327 _bfd_elf_section_offset
2329 input_section, rel->r_offset)
2331 ->output_section->vma
2332 + input_section->output_offset,
2334 if (r_type == R_FRV_FUNCDESC_VALUE)
2335 _frvfdpic_add_rofixup
2337 frvfdpic_gotfixup_section (info),
2338 _bfd_elf_section_offset
2340 input_section, rel->r_offset)
2341 + input_section->output_section->vma
2342 + input_section->output_offset + 4, picrel);
2348 if ((bfd_get_section_flags (output_bfd,
2349 input_section->output_section)
2350 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2352 if (_frvfdpic_osec_readonly_p (output_bfd,
2356 info->callbacks->warning
2358 _("cannot emit dynamic relocations in read-only section"),
2359 name, input_bfd, input_section, rel->r_offset);
2362 _frvfdpic_add_dyn_reloc (output_bfd,
2363 frvfdpic_gotrel_section (info),
2364 _bfd_elf_section_offset
2366 input_section, rel->r_offset)
2368 ->output_section->vma
2369 + input_section->output_offset,
2370 r_type, dynindx, addend, picrel);
2373 addend += osec->output_section->vma;
2374 /* We want the addend in-place because dynamic
2375 relocations are REL. Setting relocation to it
2376 should arrange for it to be installed. */
2377 relocation = addend - rel->r_addend;
2380 if (r_type == R_FRV_FUNCDESC_VALUE)
2382 /* If we've omitted the dynamic relocation, just emit
2383 the fixed addresses of the symbol and of the local
2385 if (info->executable && !info->pie
2386 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
2387 bfd_put_32 (output_bfd,
2388 frvfdpic_got_section (info)->output_section->vma
2389 + frvfdpic_got_section (info)->output_offset
2390 + frvfdpic_got_initial_offset (info),
2391 contents + rel->r_offset + 4);
2393 /* A function descriptor used for lazy or local
2394 resolving is initialized such that its high word
2395 contains the output section index in which the
2396 PLT entries are located, and the low word
2397 contains the offset of the lazy PLT entry entry
2398 point into that section. */
2399 bfd_put_32 (output_bfd,
2400 h && ! FRVFDPIC_SYM_LOCAL (info, h)
2402 : _frvfdpic_osec_to_segment (output_bfd,
2405 contents + rel->r_offset + 4);
2408 check_segment[0] = check_segment[1] = got_segment;
2412 case R_FRV_GPRELU12:
2416 check_segment[0] = gprel_segment;
2417 check_segment[1] = sec
2418 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2423 check_segment[0] = isec_segment;
2424 check_segment[1] = sec
2425 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2430 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
2432 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
2433 in the ld testsuite. */
2434 /* This helps catch problems in GCC while we can't do more
2435 than static linking. The idea is to test whether the
2436 input file basename is crt0.o only once. */
2437 if (silence_segment_error == 1)
2438 silence_segment_error =
2439 (strlen (input_bfd->filename) == 6
2440 && strcmp (input_bfd->filename, "crt0.o") == 0)
2441 || (strlen (input_bfd->filename) > 6
2442 && strcmp (input_bfd->filename
2443 + strlen (input_bfd->filename) - 7,
2447 if (!silence_segment_error
2448 /* We don't want duplicate errors for undefined
2450 && !(picrel && picrel->symndx == -1
2451 && picrel->d.h->root.type == bfd_link_hash_undefined))
2452 info->callbacks->warning
2454 (info->shared || info->pie)
2455 ? _("relocations between different segments are not supported")
2456 : _("warning: relocation references a different segment"),
2457 name, input_bfd, input_section, rel->r_offset);
2458 if (!silence_segment_error && (info->shared || info->pie))
2460 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC;
2465 case R_FRV_GOTOFFHI:
2466 /* We need the addend to be applied before we shift the
2468 relocation += rel->r_addend;
2471 case R_FRV_FUNCDESC_GOTHI:
2472 case R_FRV_FUNCDESC_GOTOFFHI:
2477 case R_FRV_FUNCDESC_GOTLO:
2478 case R_FRV_GOTOFFLO:
2479 case R_FRV_FUNCDESC_GOTOFFLO:
2480 relocation &= 0xffff;
2490 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
2494 /* When referencing a GOT entry, a function descriptor or a
2495 PLT, we don't want the addend to apply to the reference,
2496 but rather to the referenced symbol. The actual entry
2497 will have already been created taking the addend into
2498 account, so cancel it out here. */
2502 case R_FRV_FUNCDESC_GOT12:
2503 case R_FRV_FUNCDESC_GOTHI:
2504 case R_FRV_FUNCDESC_GOTLO:
2505 case R_FRV_FUNCDESC_GOTOFF12:
2506 case R_FRV_FUNCDESC_GOTOFFHI:
2507 case R_FRV_FUNCDESC_GOTOFFLO:
2508 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
2509 here, since we do want to apply the addend to the others.
2510 Note that we've applied the addend to GOTOFFHI before we
2511 shifted it right. */
2512 case R_FRV_GOTOFFHI:
2513 relocation -= rel->r_addend;
2520 if (r_type == R_FRV_HI16)
2521 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation);
2523 else if (r_type == R_FRV_LO16)
2524 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation);
2526 else if (r_type == R_FRV_LABEL24)
2527 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel,
2528 contents, relocation);
2530 else if (r_type == R_FRV_GPREL12)
2531 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel,
2532 contents, relocation);
2534 else if (r_type == R_FRV_GPRELU12)
2535 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel,
2536 contents, relocation);
2538 else if (r_type == R_FRV_GPRELLO)
2539 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel,
2540 contents, relocation);
2542 else if (r_type == R_FRV_GPRELHI)
2543 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel,
2544 contents, relocation);
2547 r = frv_final_link_relocate (howto, input_bfd, input_section, contents,
2550 if (r != bfd_reloc_ok)
2552 const char * msg = (const char *) NULL;
2556 case bfd_reloc_overflow:
2557 r = info->callbacks->reloc_overflow
2558 (info, name, howto->name, (bfd_vma) 0,
2559 input_bfd, input_section, rel->r_offset);
2562 case bfd_reloc_undefined:
2563 r = info->callbacks->undefined_symbol
2564 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2567 case bfd_reloc_outofrange:
2568 msg = _("internal error: out of range error");
2571 case bfd_reloc_notsupported:
2572 msg = _("internal error: unsupported relocation error");
2575 case bfd_reloc_dangerous:
2576 msg = _("internal error: dangerous relocation");
2580 msg = _("internal error: unknown error");
2585 r = info->callbacks->warning
2586 (info, msg, name, input_bfd, input_section, rel->r_offset);
2596 /* Return the section that should be marked against GC for a given
2600 elf32_frv_gc_mark_hook (sec, info, rel, h, sym)
2602 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2603 Elf_Internal_Rela *rel;
2604 struct elf_link_hash_entry *h;
2605 Elf_Internal_Sym *sym;
2609 switch (ELF32_R_TYPE (rel->r_info))
2611 case R_FRV_GNU_VTINHERIT:
2612 case R_FRV_GNU_VTENTRY:
2616 switch (h->root.type)
2621 case bfd_link_hash_defined:
2622 case bfd_link_hash_defweak:
2623 return h->root.u.def.section;
2625 case bfd_link_hash_common:
2626 return h->root.u.c.p->section;
2631 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2636 /* Update the got entry reference counts for the section being removed. */
2639 elf32_frv_gc_sweep_hook (abfd, info, sec, relocs)
2640 bfd *abfd ATTRIBUTE_UNUSED;
2641 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2642 asection *sec ATTRIBUTE_UNUSED;
2643 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
2649 /* Hook called by the linker routine which adds symbols from an object
2650 file. We use it to put .comm items in .scomm, and not .comm. */
2653 elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2655 struct bfd_link_info *info;
2656 Elf_Internal_Sym *sym;
2657 const char **namep ATTRIBUTE_UNUSED;
2658 flagword *flagsp ATTRIBUTE_UNUSED;
2662 if (sym->st_shndx == SHN_COMMON
2663 && !info->relocatable
2664 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd))
2666 /* Common symbols less than or equal to -G nn bytes are
2667 automatically put into .sbss. */
2669 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
2673 scomm = bfd_make_section (abfd, ".scommon");
2675 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
2677 | SEC_LINKER_CREATED)))
2682 *valp = sym->st_size;
2688 /* We need dynamic symbols for every section, since segments can
2689 relocate independently. */
2691 _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2692 struct bfd_link_info *info
2694 asection *p ATTRIBUTE_UNUSED)
2696 switch (elf_section_data (p)->this_hdr.sh_type)
2700 /* If sh_type is yet undecided, assume it could be
2701 SHT_PROGBITS/SHT_NOBITS. */
2705 /* There shouldn't be section relative relocations
2706 against any other section. */
2712 /* Create a .got section, as well as its additional info field. This
2713 is almost entirely copied from
2714 elflink.c:_bfd_elf_create_got_section(). */
2717 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info)
2721 struct elf_link_hash_entry *h;
2722 struct bfd_link_hash_entry *bh;
2723 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2727 /* This function may be called more than once. */
2728 s = bfd_get_section_by_name (abfd, ".got");
2729 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
2732 /* Machine specific: although pointers are 32-bits wide, we want the
2733 GOT to be aligned to a 64-bit boundary, such that function
2734 descriptors in it can be accessed with 64-bit loads and
2738 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2739 | SEC_LINKER_CREATED);
2741 s = bfd_make_section (abfd, ".got");
2743 || !bfd_set_section_flags (abfd, s, flags)
2744 || !bfd_set_section_alignment (abfd, s, ptralign))
2747 if (bed->want_got_plt)
2749 s = bfd_make_section (abfd, ".got.plt");
2751 || !bfd_set_section_flags (abfd, s, flags)
2752 || !bfd_set_section_alignment (abfd, s, ptralign))
2756 if (bed->want_got_sym)
2758 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
2759 (or .got.plt) section. We don't do this in the linker script
2760 because we don't want to define the symbol if we are not creating
2761 a global offset table. */
2763 if (!(_bfd_generic_link_add_one_symbol
2764 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
2765 bed->got_symbol_offset, (const char *) NULL, FALSE,
2766 bed->collect, &bh)))
2768 h = (struct elf_link_hash_entry *) bh;
2769 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2770 h->type = STT_OBJECT;
2772 /* Machine-specific: we want the symbol for executables as
2774 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2777 elf_hash_table (info)->hgot = h;
2780 /* The first bit of the global offset table is the header. */
2781 s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
2783 /* This is the machine-specific part. Create and initialize section
2784 data for the got. */
2785 if (IS_FDPIC (abfd))
2787 frvfdpic_got_section (info) = s;
2788 frvfdpic_relocs_info (info) = htab_try_create (1, frvfdpic_relocs_info_hash,
2789 frvfdpic_relocs_info_eq,
2791 if (! frvfdpic_relocs_info (info))
2794 s = bfd_make_section (abfd, ".rel.got");
2796 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2797 || ! bfd_set_section_alignment (abfd, s, 2))
2800 frvfdpic_gotrel_section (info) = s;
2802 /* Machine-specific. */
2803 s = bfd_make_section (abfd, ".rofixup");
2805 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2806 || ! bfd_set_section_alignment (abfd, s, 2))
2809 frvfdpic_gotfixup_section (info) = s;
2816 flags = BSF_GLOBAL | BSF_WEAK;
2819 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it
2820 turns out that we're linking with a different linker script, the
2821 linker script will override it. */
2823 if (!(_bfd_generic_link_add_one_symbol
2824 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE,
2825 bed->collect, &bh)))
2827 h = (struct elf_link_hash_entry *) bh;
2828 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2829 h->type = STT_OBJECT;
2831 /* Machine-specific: we want the symbol for executables as well. */
2832 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h))
2838 /* Make sure the got and plt sections exist, and that our pointers in
2839 the link hash table point to them. */
2842 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2844 /* This is mostly copied from
2845 elflink.c:_bfd_elf_create_dynamic_sections(). */
2846 flagword flags, pltflags;
2848 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2850 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2851 .rel[a].bss sections. */
2853 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2854 | SEC_LINKER_CREATED);
2857 pltflags |= SEC_CODE;
2858 if (bed->plt_not_loaded)
2859 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
2860 if (bed->plt_readonly)
2861 pltflags |= SEC_READONLY;
2863 s = bfd_make_section (abfd, ".plt");
2865 || ! bfd_set_section_flags (abfd, s, pltflags)
2866 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2868 /* FRV-specific: remember it. */
2869 frvfdpic_plt_section (info) = s;
2871 if (bed->want_plt_sym)
2873 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2875 struct elf_link_hash_entry *h;
2876 struct bfd_link_hash_entry *bh = NULL;
2878 if (! (_bfd_generic_link_add_one_symbol
2879 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
2880 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
2882 h = (struct elf_link_hash_entry *) bh;
2883 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2884 h->type = STT_OBJECT;
2886 if (! info->executable
2887 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2891 /* FRV-specific: we want rel relocations for the plt. */
2892 s = bfd_make_section (abfd, ".rel.plt");
2894 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2895 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2897 /* FRV-specific: remember it. */
2898 frvfdpic_pltrel_section (info) = s;
2900 /* FRV-specific: we want to create the GOT in the FRV way. */
2901 if (! _frv_create_got_section (abfd, info))
2904 /* FRV-specific: make sure we created everything we wanted. */
2905 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info)
2906 && frvfdpic_gotfixup_section (info)
2907 && frvfdpic_plt_section (info)
2908 && frvfdpic_pltrel_section (info));
2910 if (bed->want_dynbss)
2912 /* The .dynbss section is a place to put symbols which are defined
2913 by dynamic objects, are referenced by regular objects, and are
2914 not functions. We must allocate space for them in the process
2915 image and use a R_*_COPY reloc to tell the dynamic linker to
2916 initialize them at run time. The linker script puts the .dynbss
2917 section into the .bss section of the final image. */
2918 s = bfd_make_section (abfd, ".dynbss");
2920 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2923 /* The .rel[a].bss section holds copy relocs. This section is not
2924 normally needed. We need to create it here, though, so that the
2925 linker will map it to an output section. We can't just create it
2926 only if we need it, because we will not know whether we need it
2927 until we have seen all the input files, and the first time the
2928 main linker code calls BFD after examining all the input files
2929 (size_dynamic_sections) the input sections have already been
2930 mapped to the output sections. If the section turns out not to
2931 be needed, we can discard it later. We will never need this
2932 section when generating a shared object, since they do not use
2936 s = bfd_make_section (abfd,
2937 (bed->default_use_rela_p
2938 ? ".rela.bss" : ".rel.bss"));
2940 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2941 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2949 /* The name of the dynamic interpreter. This is put in the .interp
2952 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2954 #define DEFAULT_STACK_SIZE 0x20000
2956 /* This structure is used to collect the number of entries present in
2957 each addressable range of the got. */
2958 struct _frvfdpic_dynamic_got_info
2960 /* Several bits of information about the current link. */
2961 struct bfd_link_info *info;
2962 /* Total size needed for GOT entries within the 12-, 16- or 32-bit
2964 bfd_vma got12, gotlos, gothilo;
2965 /* Total size needed for function descriptor entries within the 12-,
2966 16- or 32-bit ranges. */
2967 bfd_vma fd12, fdlos, fdhilo;
2968 /* Total size needed function descriptor entries referenced in PLT
2969 entries, that would be profitable to place in offsets close to
2970 the PIC register. */
2972 /* Total size needed by lazy PLT entries. */
2974 /* Number of relocations carried over from input object files. */
2975 unsigned long relocs;
2976 /* Number of fixups introduced by relocations in input object files. */
2977 unsigned long fixups;
2980 /* Compute the total GOT size required by each symbol in each range.
2981 Symbols may require up to 4 words in the GOT: an entry pointing to
2982 the symbol, an entry pointing to its function descriptor, and a
2983 private function descriptors taking two words. */
2986 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
2988 struct frvfdpic_relocs_info *entry = *entryp;
2989 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_;
2990 unsigned relocs = 0, fixups = 0;
2992 /* Allocate space for a GOT entry pointing to the symbol. */
2995 else if (entry->gotlos)
2997 else if (entry->gothilo)
2998 dinfo->gothilo += 4;
3003 /* Allocate space for a GOT entry pointing to the function
3007 else if (entry->fdgotlos)
3009 else if (entry->fdgothilo)
3010 dinfo->gothilo += 4;
3015 /* Decide whether we need a PLT entry, a function descriptor in the
3016 GOT, and a lazy PLT entry for this symbol. */
3017 entry->plt = entry->call
3018 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3019 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3020 entry->privfd = entry->plt
3021 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo
3022 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo)
3023 && (entry->symndx != -1
3024 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
3025 entry->lazyplt = entry->privfd
3026 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3027 && ! (dinfo->info->flags & DF_BIND_NOW)
3028 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3030 /* Allocate space for a function descriptor. */
3031 if (entry->fdgoff12)
3033 else if (entry->fdgofflos)
3035 else if (entry->privfd && entry->plt)
3037 else if (entry->privfd)
3046 if (!dinfo->info->executable || dinfo->info->pie)
3047 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
3050 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
3052 if (entry->symndx != -1
3053 || entry->d.h->root.type != bfd_link_hash_undefweak)
3054 fixups += entry->relocs32 + 2 * entry->relocsfdv;
3057 relocs += entry->relocs32 + entry->relocsfdv;
3059 if (entry->symndx != -1
3060 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
3062 if (entry->symndx != -1
3063 || entry->d.h->root.type != bfd_link_hash_undefweak)
3064 fixups += entry->relocsfd;
3067 relocs += entry->relocsfd;
3070 entry->dynrelocs += relocs;
3071 entry->fixups += fixups;
3072 dinfo->relocs += relocs;
3073 dinfo->fixups += fixups;
3078 /* This structure is used to assign offsets to got entries, function
3079 descriptors, plt entries and lazy plt entries. */
3081 struct _frvfdpic_dynamic_got_plt_info
3083 /* Summary information collected with _frvfdpic_count_got_plt_entries. */
3084 struct _frvfdpic_dynamic_got_info g;
3086 /* For each addressable range, we record a MAX (positive) and MIN
3087 (negative) value. CUR is used to assign got entries, and it's
3088 incremented from an initial positive value to MAX, then from MIN
3089 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3090 assign function descriptors, and it's decreased from an initial
3091 non-positive value to MIN, then from MAX down to CUR (unless CUR
3092 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3093 to even words. ODD, if non-zero, indicates an odd word to be
3094 used for the next got entry, otherwise CUR is used and
3095 incremented by a pair of words, wrapping around when it reaches
3096 MAX. FDCUR is decremented (and wrapped) before the next function
3097 descriptor is chosen. FDPLT indicates the number of remaining
3098 slots that can be used for function descriptors used only by PLT
3100 struct _frvfdpic_dynamic_got_alloc_data
3102 bfd_signed_vma max, cur, odd, fdcur, min;
3104 } got12, gotlos, gothilo;
3107 /* Determine the positive and negative ranges to be used by each
3108 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3109 double-word boundary, are the minimum (negative) and maximum
3110 (positive) GOT offsets already used by previous ranges, except for
3111 an ODD entry that may have been left behind. GOT and FD indicate
3112 the size of GOT entries and function descriptors that must be
3113 placed within the range from -WRAP to WRAP. If there's room left,
3114 up to FDPLT bytes should be reserved for additional function
3117 inline static bfd_signed_vma
3118 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad,
3119 bfd_signed_vma fdcur,
3127 bfd_signed_vma wrapmin = -wrap;
3129 /* Start at the given initial points. */
3133 /* If we had an incoming odd word and we have any got entries that
3134 are going to use it, consume it, otherwise leave gad->odd at
3135 zero. We might force gad->odd to zero and return the incoming
3136 odd such that it is used by the next range, but then GOT entries
3137 might appear to be out of order and we wouldn't be able to
3138 shorten the GOT by one word if it turns out to end with an
3139 unpaired GOT entry. */
3149 /* If we're left with an unpaired GOT entry, compute its location
3150 such that we can return it. Otherwise, if got doesn't require an
3151 odd number of words here, either odd was already zero in the
3152 block above, or it was set to zero because got was non-zero, or
3153 got was already zero. In the latter case, we want the value of
3154 odd to carry over to the return statement, so we don't want to
3155 reset odd unless the condition below is true. */
3162 /* Compute the tentative boundaries of this range. */
3163 gad->max = cur + got;
3164 gad->min = fdcur - fd;
3167 /* If function descriptors took too much space, wrap some of them
3169 if (gad->min < wrapmin)
3171 gad->max += wrapmin - gad->min;
3174 /* If there is space left and we have function descriptors
3175 referenced in PLT entries that could take advantage of shorter
3176 offsets, place them here. */
3177 else if (fdplt && gad->min > wrapmin)
3180 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3181 fds = gad->min - wrapmin;
3190 /* If GOT entries took too much space, wrap some of them around.
3191 This may well cause gad->min to become lower than wrapmin. This
3192 will cause a relocation overflow later on, so we don't have to
3194 if ((bfd_vma) gad->max > wrap)
3196 gad->min -= gad->max - wrap;
3199 /* If there is more space left, try to place some more function
3200 descriptors for PLT entries. */
3201 else if (fdplt && (bfd_vma) gad->max < wrap)
3204 if ((bfd_vma) (wrap - gad->max) < fdplt)
3205 fds = wrap - gad->max;
3214 /* If odd was initially computed as an offset past the wrap point,
3217 odd = gad->min + odd - gad->max;
3219 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed
3220 before returning, so do it here too. This guarantees that,
3221 should cur and fdcur meet at the wrap point, they'll both be
3223 if (gad->cur == gad->max)
3224 gad->cur = gad->min;
3229 /* Compute the location of the next GOT entry, given the allocation
3230 data for a range. */
3232 inline static bfd_signed_vma
3233 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
3239 /* If there was an odd word left behind, use it. */
3245 /* Otherwise, use the word pointed to by cur, reserve the next
3246 as an odd word, and skip to the next pair of words, possibly
3249 gad->odd = gad->cur + 4;
3251 if (gad->cur == gad->max)
3252 gad->cur = gad->min;
3258 /* Compute the location of the next function descriptor entry in the
3259 GOT, given the allocation data for a range. */
3261 inline static bfd_signed_vma
3262 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
3264 /* If we're at the bottom, wrap around, and only then allocate the
3265 next pair of words. */
3266 if (gad->fdcur == gad->min)
3267 gad->fdcur = gad->max;
3268 return gad->fdcur -= 8;
3271 /* Assign GOT offsets for every GOT entry and function descriptor.
3272 Doing everything in a single pass is tricky. */
3275 _frvfdpic_assign_got_entries (void **entryp, void *info_)
3277 struct frvfdpic_relocs_info *entry = *entryp;
3278 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
3281 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12);
3282 else if (entry->gotlos)
3283 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
3284 else if (entry->gothilo)
3285 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
3288 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12);
3289 else if (entry->fdgotlos)
3290 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
3291 else if (entry->fdgothilo)
3292 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
3294 if (entry->fdgoff12)
3295 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3296 else if (entry->plt && dinfo->got12.fdplt)
3298 dinfo->got12.fdplt -= 8;
3299 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3301 else if (entry->fdgofflos)
3302 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3303 else if (entry->plt && dinfo->gotlos.fdplt)
3305 dinfo->gotlos.fdplt -= 8;
3306 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3308 else if (entry->plt)
3310 dinfo->gothilo.fdplt -= 8;
3311 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3313 else if (entry->privfd)
3314 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3319 /* Assign GOT offsets to private function descriptors used by PLT
3320 entries (or referenced by 32-bit offsets), as well as PLT entries
3321 and lazy PLT entries. */
3324 _frvfdpic_assign_plt_entries (void **entryp, void *info_)
3326 struct frvfdpic_relocs_info *entry = *entryp;
3327 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
3329 /* If this symbol requires a local function descriptor, allocate
3331 if (entry->privfd && entry->fd_entry == 0)
3333 if (dinfo->got12.fdplt)
3335 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3336 dinfo->got12.fdplt -= 8;
3338 else if (dinfo->gotlos.fdplt)
3340 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3341 dinfo->gotlos.fdplt -= 8;
3345 BFD_ASSERT (dinfo->gothilo.fdplt)
3346 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3347 dinfo->gothilo.fdplt -= 8;
3355 /* We use the section's raw size to mark the location of the
3357 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->_raw_size;
3359 /* Figure out the length of this PLT entry based on the
3360 addressing mode we need to reach the function descriptor. */
3361 BFD_ASSERT (entry->fd_entry);
3362 if (entry->fd_entry >= -(1 << (12 - 1))
3363 && entry->fd_entry < (1 << (12 - 1)))
3365 else if (entry->fd_entry >= -(1 << (16 - 1))
3366 && entry->fd_entry < (1 << (16 - 1)))
3371 frvfdpic_plt_section (dinfo->g.info)->_raw_size += size;
3376 entry->lzplt_entry = dinfo->g.lzplt;
3377 dinfo->g.lzplt += 8;
3378 /* If this entry is the one that gets the resolver stub, account
3379 for the additional instruction. */
3380 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE
3381 == FRVFDPIC_LZPLT_RESOLV_LOC)
3382 dinfo->g.lzplt += 4;
3388 /* Follow indirect and warning hash entries so that each got entry
3389 points to the final symbol definition. P must point to a pointer
3390 to the hash table we're traversing. Since this traversal may
3391 modify the hash table, we set this pointer to NULL to indicate
3392 we've made a potentially-destructive change to the hash table, so
3393 the traversal must be restarted. */
3395 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p)
3397 struct frvfdpic_relocs_info *entry = *entryp;
3400 if (entry->symndx == -1)
3402 struct elf_link_hash_entry *h = entry->d.h;
3403 struct frvfdpic_relocs_info *oentry;
3405 while (h->root.type == bfd_link_hash_indirect
3406 || h->root.type == bfd_link_hash_warning)
3407 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3409 if (entry->d.h == h)
3412 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
3417 /* Merge the two entries. */
3418 frvfdpic_pic_merge_early_relocs_info (oentry, entry);
3419 htab_clear_slot (*htab, entryp);
3425 /* If we can't find this entry with the new bfd hash, re-insert
3426 it, and get the traversal restarted. */
3427 if (! htab_find (*htab, entry))
3429 htab_clear_slot (*htab, entryp);
3430 entryp = htab_find_slot (*htab, entry, INSERT);
3433 /* Abort the traversal, since the whole table may have
3434 moved, and leave it up to the parent to restart the
3436 *(htab_t *)p = NULL;
3444 /* Set the sizes of the dynamic sections. */
3447 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd,
3448 struct bfd_link_info *info)
3452 struct _frvfdpic_dynamic_got_plt_info gpinfo;
3456 dynobj = elf_hash_table (info)->dynobj;
3457 BFD_ASSERT (dynobj != NULL);
3459 if (elf_hash_table (info)->dynamic_sections_created)
3461 /* Set the contents of the .interp section to the interpreter. */
3462 if (info->executable)
3464 s = bfd_get_section_by_name (dynobj, ".interp");
3465 BFD_ASSERT (s != NULL);
3466 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3467 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3471 memset (&gpinfo, 0, sizeof (gpinfo));
3472 gpinfo.g.info = info;
3476 htab_t relocs = frvfdpic_relocs_info (info);
3478 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs);
3480 if (relocs == frvfdpic_relocs_info (info))
3484 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries,
3488 /* Compute the total size taken by entries in the 12-bit and 16-bit
3489 ranges, to tell how many PLT function descriptors we can bring
3490 into the 12-bit range without causing the 16-bit range to
3492 limit = odd + gpinfo.g.got12 + gpinfo.g.gotlos
3493 + gpinfo.g.fd12 + gpinfo.g.fdlos;
3494 if (limit < (bfd_vma)1 << 16)
3495 limit = ((bfd_vma)1 << 16) - limit;
3498 if (gpinfo.g.fdplt < limit)
3499 limit = gpinfo.g.fdplt;
3501 /* Determine the ranges of GOT offsets that we can use for each
3502 range of addressing modes. */
3503 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.got12,
3510 (bfd_vma)1 << (12-1));
3511 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gotlos,
3517 gpinfo.g.fdplt - gpinfo.got12.fdplt,
3518 (bfd_vma)1 << (16-1));
3519 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gothilo,
3525 gpinfo.g.fdplt - gpinfo.got12.fdplt
3526 - gpinfo.gotlos.fdplt,
3527 (bfd_vma)1 << (32-1));
3529 /* Now assign (most) GOT offsets. */
3530 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries,
3533 frvfdpic_got_section (info)->_raw_size = gpinfo.gothilo.max
3534 - gpinfo.gothilo.min
3535 /* If an odd word is the last word of the GOT, we don't need this
3536 word to be part of the GOT. */
3537 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0);
3538 if (frvfdpic_got_section (info)->_raw_size == 0)
3539 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3540 else if (frvfdpic_got_section (info)->_raw_size == 12
3541 && ! elf_hash_table (info)->dynamic_sections_created)
3543 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3544 frvfdpic_got_section (info)->_raw_size = 0;
3548 frvfdpic_got_section (info)->contents =
3549 (bfd_byte *) bfd_zalloc (dynobj,
3550 frvfdpic_got_section (info)->_raw_size);
3551 if (frvfdpic_got_section (info)->contents == NULL)
3555 if (elf_hash_table (info)->dynamic_sections_created)
3556 /* Subtract the number of lzplt entries, since those will generate
3557 relocations in the pltrel section. */
3558 frvfdpic_gotrel_section (info)->_raw_size =
3559 (gpinfo.g.relocs - gpinfo.g.lzplt / 8)
3560 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3562 BFD_ASSERT (gpinfo.g.relocs == 0);
3563 if (frvfdpic_gotrel_section (info)->_raw_size == 0)
3564 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
3567 frvfdpic_gotrel_section (info)->contents =
3568 (bfd_byte *) bfd_zalloc (dynobj,
3569 frvfdpic_gotrel_section (info)->_raw_size);
3570 if (frvfdpic_gotrel_section (info)->contents == NULL)
3574 frvfdpic_gotfixup_section (info)->_raw_size = (gpinfo.g.fixups + 1) * 4;
3575 if (frvfdpic_gotfixup_section (info)->_raw_size == 0)
3576 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
3579 frvfdpic_gotfixup_section (info)->contents =
3580 (bfd_byte *) bfd_zalloc (dynobj,
3581 frvfdpic_gotfixup_section (info)->_raw_size);
3582 if (frvfdpic_gotfixup_section (info)->contents == NULL)
3586 if (elf_hash_table (info)->dynamic_sections_created)
3588 frvfdpic_pltrel_section (info)->_raw_size =
3589 gpinfo.g.lzplt / 8 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3590 if (frvfdpic_pltrel_section (info)->_raw_size == 0)
3591 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
3594 frvfdpic_pltrel_section (info)->contents =
3595 (bfd_byte *) bfd_zalloc (dynobj,
3596 frvfdpic_pltrel_section (info)
3598 if (frvfdpic_pltrel_section (info)->contents == NULL)
3603 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
3604 such that there's room for the additional instruction needed to
3605 call the resolver. Since _frvfdpic_assign_got_entries didn't
3606 account for them, our block size is 4 bytes smaller than the real
3608 if (elf_hash_table (info)->dynamic_sections_created)
3610 frvfdpic_plt_section (info)->_raw_size = gpinfo.g.lzplt
3611 + ((gpinfo.g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8)
3612 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4);
3615 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to
3616 actually assign lazy PLT entries addresses. */
3619 /* Save information that we're going to need to generate GOT and PLT
3621 frvfdpic_got_initial_offset (info) = -gpinfo.gothilo.min;
3623 if (get_elf_backend_data (output_bfd)->want_got_sym)
3624 elf_hash_table (info)->hgot->root.u.def.value
3625 += frvfdpic_got_initial_offset (info);
3627 if (elf_hash_table (info)->dynamic_sections_created)
3628 frvfdpic_plt_initial_offset (info) =
3629 frvfdpic_plt_section (info)->_raw_size;
3631 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries,
3634 /* Allocate the PLT section contents only after
3635 _frvfdpic_assign_plt_entries has a chance to add the size of the
3636 non-lazy PLT entries. */
3637 if (elf_hash_table (info)->dynamic_sections_created)
3639 if (frvfdpic_plt_section (info)->_raw_size == 0)
3640 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
3643 frvfdpic_plt_section (info)->contents =
3644 (bfd_byte *) bfd_zalloc (dynobj,
3645 frvfdpic_plt_section (info)->_raw_size);
3646 if (frvfdpic_plt_section (info)->contents == NULL)
3651 if (elf_hash_table (info)->dynamic_sections_created)
3653 if (frvfdpic_got_section (info)->_raw_size)
3654 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
3657 if (frvfdpic_pltrel_section (info)->_raw_size)
3658 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3659 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
3660 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
3663 if (frvfdpic_gotrel_section (info)->_raw_size)
3664 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
3665 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
3666 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
3667 sizeof (Elf32_External_Rel)))
3675 elf32_frvfdpic_always_size_sections (bfd *output_bfd,
3676 struct bfd_link_info *info)
3678 if (!info->relocatable)
3680 struct elf_link_hash_entry *h;
3683 /* Force a PT_GNU_STACK segment to be created. */
3684 if (! elf_tdata (output_bfd)->stack_flags)
3685 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
3687 /* Define __stacksize if it's not defined yet. */
3688 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3689 FALSE, FALSE, FALSE);
3690 if (! h || h->root.type != bfd_link_hash_defined
3691 || h->type != STT_OBJECT
3692 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3694 struct bfd_link_hash_entry *bh = NULL;
3696 if (!(_bfd_generic_link_add_one_symbol
3697 (info, output_bfd, "__stacksize",
3698 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
3699 (const char *) NULL, FALSE,
3700 get_elf_backend_data (output_bfd)->collect, &bh)))
3703 h = (struct elf_link_hash_entry *) bh;
3704 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3705 h->type = STT_OBJECT;
3708 /* Create a stack section, and set its alignment. */
3709 sec = bfd_make_section (output_bfd, ".stack");
3712 || ! bfd_set_section_alignment (output_bfd, sec, 3))
3720 elf32_frvfdpic_modify_segment_map (bfd *output_bfd,
3721 struct bfd_link_info *info)
3723 struct elf_segment_map *m;
3725 /* objcopy and strip preserve what's already there using
3726 elf32_frvfdpic_copy_private_bfd_data (). */
3730 for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next)
3731 if (m->p_type == PT_GNU_STACK)
3736 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
3737 struct elf_link_hash_entry *h;
3741 /* Obtain the pointer to the __stacksize symbol. */
3742 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3743 FALSE, FALSE, FALSE);
3744 while (h->root.type == bfd_link_hash_indirect
3745 || h->root.type == bfd_link_hash_warning)
3746 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3747 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
3749 /* Set the section size from the symbol value. We
3750 intentionally ignore the symbol section. */
3751 if (h->root.type == bfd_link_hash_defined)
3752 sec->_raw_size = h->root.u.def.value;
3754 sec->_raw_size = DEFAULT_STACK_SIZE;
3756 /* Add the stack section to the PT_GNU_STACK segment,
3757 such that its size and alignment requirements make it
3759 m->sections[m->count] = sec;
3767 /* Fill in code and data in dynamic sections. */
3770 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3771 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3773 /* Nothing to be done for non-FDPIC. */
3778 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd,
3779 struct bfd_link_info *info)
3784 dynobj = elf_hash_table (info)->dynobj;
3786 if (frvfdpic_got_section (info))
3788 BFD_ASSERT (frvfdpic_gotrel_section (info)->_raw_size
3789 == (frvfdpic_gotrel_section (info)->reloc_count
3790 * sizeof (Elf32_External_Rel)));
3792 if (frvfdpic_gotfixup_section (info))
3794 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
3795 bfd_vma got_value = hgot->root.u.def.value
3796 + hgot->root.u.def.section->output_section->vma
3797 + hgot->root.u.def.section->output_offset;
3799 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info),
3802 if (frvfdpic_gotfixup_section (info)->_raw_size
3803 != (frvfdpic_gotfixup_section (info)->reloc_count * 4))
3805 (*_bfd_error_handler)
3806 ("LINKER BUG: .rofixup section size mismatch");
3811 if (elf_hash_table (info)->dynamic_sections_created)
3813 BFD_ASSERT (frvfdpic_pltrel_section (info)->_raw_size
3814 == (frvfdpic_pltrel_section (info)->reloc_count
3815 * sizeof (Elf32_External_Rel)));
3818 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3820 if (elf_hash_table (info)->dynamic_sections_created)
3822 Elf32_External_Dyn * dyncon;
3823 Elf32_External_Dyn * dynconend;
3825 BFD_ASSERT (sdyn != NULL);
3827 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3828 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3830 for (; dyncon < dynconend; dyncon++)
3832 Elf_Internal_Dyn dyn;
3834 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3842 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma
3843 + frvfdpic_got_section (info)->output_offset
3844 + frvfdpic_got_initial_offset (info);
3845 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3849 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info)
3850 ->output_section->vma
3851 + frvfdpic_pltrel_section (info)->output_offset;
3852 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3856 if (frvfdpic_pltrel_section (info)->_cooked_size != 0)
3857 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_cooked_size;
3859 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_raw_size;
3860 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3869 /* Adjust a symbol defined by a dynamic object and referenced by a
3873 elf32_frvfdpic_adjust_dynamic_symbol
3874 (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3875 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3879 dynobj = elf_hash_table (info)->dynobj;
3881 /* Make sure we know what is going on here. */
3882 BFD_ASSERT (dynobj != NULL
3883 && (h->weakdef != NULL
3884 || ((h->elf_link_hash_flags
3885 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3886 && (h->elf_link_hash_flags
3887 & ELF_LINK_HASH_REF_REGULAR) != 0
3888 && (h->elf_link_hash_flags
3889 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
3891 /* If this is a weak symbol, and there is a real definition, the
3892 processor independent code will have arranged for us to see the
3893 real definition first, and we can just use the same value. */
3894 if (h->weakdef != NULL)
3896 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3897 || h->weakdef->root.type == bfd_link_hash_defweak);
3898 h->root.u.def.section = h->weakdef->root.u.def.section;
3899 h->root.u.def.value = h->weakdef->root.u.def.value;
3905 /* Perform any actions needed for dynamic symbols. */
3908 elf32_frvfdpic_finish_dynamic_symbol
3909 (bfd *output_bfd ATTRIBUTE_UNUSED,
3910 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3911 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
3912 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
3917 /* Decide whether to attempt to turn absptr or lsda encodings in
3918 shared libraries into pcrel within the given input section. */
3921 frvfdpic_elf_use_relative_eh_frame
3922 (bfd *input_bfd ATTRIBUTE_UNUSED,
3923 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3924 asection *eh_frame_section ATTRIBUTE_UNUSED)
3926 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
3930 /* Adjust the contents of an eh_frame_hdr section before they're output. */
3933 frvfdpic_elf_encode_eh_address (bfd *abfd,
3934 struct bfd_link_info *info,
3935 asection *osec, bfd_vma offset,
3936 asection *loc_sec, bfd_vma loc_offset,
3939 struct elf_link_hash_entry *h;
3941 h = elf_hash_table (info)->hgot;
3942 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
3944 if (! h || (_frvfdpic_osec_to_segment (abfd, osec)
3945 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section)))
3946 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
3947 loc_sec, loc_offset, encoded);
3949 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec)
3950 == (_frvfdpic_osec_to_segment
3951 (abfd, h->root.u.def.section->output_section)));
3953 *encoded = osec->vma + offset
3954 - (h->root.u.def.value
3955 + h->root.u.def.section->output_section->vma
3956 + h->root.u.def.section->output_offset);
3958 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
3961 /* Look through the relocs for a section during the first phase.
3963 Besides handling virtual table relocs for gc, we have to deal with
3964 all sorts of PIC-related relocations. We describe below the
3965 general plan on how to handle such relocations, even though we only
3966 collect information at this point, storing them in hash tables for
3967 perusal of later passes.
3969 32 relocations are propagated to the linker output when creating
3970 position-independent output. LO16 and HI16 relocations are not
3971 supposed to be encountered in this case.
3973 LABEL16 should always be resolvable by the linker, since it's only
3976 LABEL24, on the other hand, is used by calls. If it turns out that
3977 the target of a call is a dynamic symbol, a PLT entry must be
3978 created for it, which triggers the creation of a private function
3979 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
3981 GPREL relocations require the referenced symbol to be in the same
3982 segment as _gp, but this can only be checked later.
3984 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
3985 exist. LABEL24 might as well, since it may require a PLT entry,
3986 that will require a got.
3988 Non-FUNCDESC GOT relocations require a GOT entry to be created
3989 regardless of whether the symbol is dynamic. However, since a
3990 global symbol that turns out to not be exported may have the same
3991 address of a non-dynamic symbol, we don't assign GOT entries at
3992 this point, such that we can share them in this case. A relocation
3993 for the GOT entry always has to be created, be it to offset a
3994 private symbol by the section load address, be it to get the symbol
3995 resolved dynamically.
3997 FUNCDESC GOT relocations require a GOT entry to be created, and
3998 handled as if a FUNCDESC relocation was applied to the GOT entry in
4001 FUNCDESC relocations referencing a symbol that turns out to NOT be
4002 dynamic cause a private function descriptor to be created. The
4003 FUNCDESC relocation then decays to a 32 relocation that points at
4004 the private descriptor. If the symbol is dynamic, the FUNCDESC
4005 relocation is propagated to the linker output, such that the
4006 dynamic linker creates the canonical descriptor, pointing to the
4007 dynamically-resolved definition of the function.
4009 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4010 symbols that are assigned to the same segment as the GOT, but we
4011 can only check this later, after we know the complete set of
4012 symbols defined and/or exported.
4014 FUNCDESC GOTOFF relocations require a function descriptor to be
4015 created and, unless lazy binding is disabled or the symbol is not
4016 dynamic, a lazy PLT entry. Since we can't tell at this point
4017 whether a symbol is going to be dynamic, we have to decide later
4018 whether to create a lazy PLT entry or bind the descriptor directly
4019 to the private function.
4021 FUNCDESC_VALUE relocations are not supposed to be present in object
4022 files, but they may very well be simply propagated to the linker
4023 output, since they have no side effect.
4026 A function descriptor always requires a FUNCDESC_VALUE relocation.
4027 Whether it's in .plt.rel or not depends on whether lazy binding is
4028 enabled and on whether the referenced symbol is dynamic.
4030 The existence of a lazy PLT requires the resolverStub lazy PLT
4031 entry to be present.
4034 As for assignment of GOT, PLT and lazy PLT entries, and private
4035 descriptors, we might do them all sequentially, but we can do
4036 better than that. For example, we can place GOT entries and
4037 private function descriptors referenced using 12-bit operands
4038 closer to the PIC register value, such that these relocations don't
4039 overflow. Those that are only referenced with LO16 relocations
4040 could come next, but we may as well place PLT-required function
4041 descriptors in the 12-bit range to make them shorter. Symbols
4042 referenced with LO16/HI16 may come next, but we may place
4043 additional function descriptors in the 16-bit range if we can
4044 reliably tell that we've already placed entries that are ever
4045 referenced with only LO16. PLT entries are therefore generated as
4046 small as possible, while not introducing relocation overflows in
4047 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4048 generated before or after PLT entries, but not intermingled with
4049 them, such that we can have more lazy PLT entries in range for a
4050 branch to the resolverStub. The resolverStub should be emitted at
4051 the most distant location from the first lazy PLT entry such that
4052 it's still in range for a branch, or closer, if there isn't a need
4053 for so many lazy PLT entries. Additional lazy PLT entries may be
4054 emitted after the resolverStub, as long as branches are still in
4055 range. If the branch goes out of range, longer lazy PLT entries
4058 We could further optimize PLT and lazy PLT entries by giving them
4059 priority in assignment to closer-to-gr17 locations depending on the
4060 number of occurrences of references to them (assuming a function
4061 that's called more often is more important for performance, so its
4062 PLT entry should be faster), or taking hints from the compiler.
4063 Given infinite time and money... :-) */
4066 elf32_frv_check_relocs (abfd, info, sec, relocs)
4068 struct bfd_link_info *info;
4070 const Elf_Internal_Rela *relocs;
4072 Elf_Internal_Shdr *symtab_hdr;
4073 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4074 const Elf_Internal_Rela *rel;
4075 const Elf_Internal_Rela *rel_end;
4077 struct frvfdpic_relocs_info *picrel;
4079 if (info->relocatable)
4082 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4083 sym_hashes = elf_sym_hashes (abfd);
4084 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
4085 if (!elf_bad_symtab (abfd))
4086 sym_hashes_end -= symtab_hdr->sh_info;
4088 dynobj = elf_hash_table (info)->dynobj;
4089 rel_end = relocs + sec->reloc_count;
4090 for (rel = relocs; rel < rel_end; rel++)
4092 struct elf_link_hash_entry *h;
4093 unsigned long r_symndx;
4095 r_symndx = ELF32_R_SYM (rel->r_info);
4096 if (r_symndx < symtab_hdr->sh_info)
4099 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4101 switch (ELF32_R_TYPE (rel->r_info))
4106 case R_FRV_FUNCDESC_GOT12:
4107 case R_FRV_FUNCDESC_GOTHI:
4108 case R_FRV_FUNCDESC_GOTLO:
4109 case R_FRV_GOTOFF12:
4110 case R_FRV_GOTOFFHI:
4111 case R_FRV_GOTOFFLO:
4112 case R_FRV_FUNCDESC_GOTOFF12:
4113 case R_FRV_FUNCDESC_GOTOFFHI:
4114 case R_FRV_FUNCDESC_GOTOFFLO:
4115 case R_FRV_FUNCDESC:
4116 case R_FRV_FUNCDESC_VALUE:
4117 if (! IS_FDPIC (abfd))
4121 case R_FRV_GPRELU12:
4128 elf_hash_table (info)->dynobj = dynobj = abfd;
4129 if (! _frv_create_got_section (abfd, info))
4132 if (! IS_FDPIC (abfd))
4139 if (h->dynindx == -1)
4140 switch (ELF_ST_VISIBILITY (h->other))
4146 bfd_elf_link_record_dynamic_symbol (info, h);
4150 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info),
4152 rel->r_addend, INSERT);
4155 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
4156 (info), abfd, r_symndx,
4157 rel->r_addend, INSERT);
4167 switch (ELF32_R_TYPE (rel->r_info))
4170 if (IS_FDPIC (abfd))
4174 case R_FRV_FUNCDESC_VALUE:
4175 picrel->relocsfdv++;
4176 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4181 if (! IS_FDPIC (abfd))
4185 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4195 picrel->gothilo = 1;
4198 case R_FRV_FUNCDESC_GOT12:
4199 picrel->fdgot12 = 1;
4202 case R_FRV_FUNCDESC_GOTHI:
4203 case R_FRV_FUNCDESC_GOTLO:
4204 picrel->fdgothilo = 1;
4207 case R_FRV_GOTOFF12:
4208 case R_FRV_GOTOFFHI:
4209 case R_FRV_GOTOFFLO:
4213 case R_FRV_FUNCDESC_GOTOFF12:
4214 picrel->fdgoff12 = 1;
4217 case R_FRV_FUNCDESC_GOTOFFHI:
4218 case R_FRV_FUNCDESC_GOTOFFLO:
4219 picrel->fdgoffhilo = 1;
4222 case R_FRV_FUNCDESC:
4227 /* This relocation describes the C++ object vtable hierarchy.
4228 Reconstruct it for later use during GC. */
4229 case R_FRV_GNU_VTINHERIT:
4230 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4234 /* This relocation describes which C++ vtable entries are actually
4235 used. Record for later use during GC. */
4236 case R_FRV_GNU_VTENTRY:
4237 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4245 case R_FRV_GPRELU12:
4253 (*_bfd_error_handler)
4254 (_("%s: unsupported relocation type %i"),
4255 bfd_archive_filename (abfd), ELF32_R_TYPE (rel->r_info));
4264 /* Return the machine subcode from the ELF e_flags header. */
4267 elf32_frv_machine (abfd)
4270 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK)
4273 case EF_FRV_CPU_FR550: return bfd_mach_fr550;
4274 case EF_FRV_CPU_FR500: return bfd_mach_fr500;
4275 case EF_FRV_CPU_FR450: return bfd_mach_fr450;
4276 case EF_FRV_CPU_FR405: return bfd_mach_fr400;
4277 case EF_FRV_CPU_FR400: return bfd_mach_fr400;
4278 case EF_FRV_CPU_FR300: return bfd_mach_fr300;
4279 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple;
4280 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat;
4283 return bfd_mach_frv;
4286 /* Set the right machine number for a FRV ELF file. */
4289 elf32_frv_object_p (abfd)
4292 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd));
4293 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0)
4294 == (IS_FDPIC (abfd)));
4297 /* Function to set the ELF flag bits. */
4300 frv_elf_set_private_flags (abfd, flags)
4304 elf_elfheader (abfd)->e_flags = flags;
4305 elf_flags_init (abfd) = TRUE;
4309 /* Copy backend specific data from one object module to another. */
4312 frv_elf_copy_private_bfd_data (ibfd, obfd)
4316 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4317 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4320 BFD_ASSERT (!elf_flags_init (obfd)
4321 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
4323 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
4324 elf_flags_init (obfd) = TRUE;
4328 /* Return true if the architecture described by elf header flag
4329 EXTENSION is an extension of the architecture described by BASE. */
4332 frv_elf_arch_extension_p (flagword base, flagword extension)
4334 if (base == extension)
4337 /* CPU_GENERIC code can be merged with code for a specific
4338 architecture, in which case the result is marked as being
4339 for the specific architecture. Everything is therefore
4340 an extension of CPU_GENERIC. */
4341 if (base == EF_FRV_CPU_GENERIC)
4344 if (extension == EF_FRV_CPU_FR450)
4345 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405)
4348 if (extension == EF_FRV_CPU_FR405)
4349 if (base == EF_FRV_CPU_FR400)
4356 elf32_frvfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4360 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4361 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4364 if (! frv_elf_copy_private_bfd_data (ibfd, obfd))
4367 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
4368 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
4371 /* Copy the stack size. */
4372 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
4373 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
4375 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
4377 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
4378 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
4380 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
4382 /* Rewrite the phdrs, since we're only called after they
4383 were first written. */
4384 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
4385 ->s->sizeof_ehdr, SEEK_SET) != 0
4386 || get_elf_backend_data (obfd)->s
4387 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
4388 elf_elfheader (obfd)->e_phnum) != 0)
4399 /* Merge backend specific data from an object file to the output
4400 object file when linking. */
4403 frv_elf_merge_private_bfd_data (ibfd, obfd)
4407 flagword old_flags, old_partial;
4408 flagword new_flags, new_partial;
4409 bfd_boolean error = FALSE;
4413 new_opt[0] = old_opt[0] = '\0';
4414 new_flags = elf_elfheader (ibfd)->e_flags;
4415 old_flags = elf_elfheader (obfd)->e_flags;
4417 if (new_flags & EF_FRV_FDPIC)
4418 new_flags &= ~EF_FRV_PIC;
4421 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4422 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
4423 bfd_get_filename (ibfd));
4426 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4428 elf_flags_init (obfd) = TRUE;
4429 old_flags = new_flags;
4432 else if (new_flags == old_flags) /* Compatible flags are ok. */
4435 else /* Possibly incompatible flags. */
4437 /* Warn if different # of gprs are used. Note, 0 means nothing is
4438 said about the size of gprs. */
4439 new_partial = (new_flags & EF_FRV_GPR_MASK);
4440 old_partial = (old_flags & EF_FRV_GPR_MASK);
4441 if (new_partial == old_partial)
4444 else if (new_partial == 0)
4447 else if (old_partial == 0)
4448 old_flags |= new_partial;
4452 switch (new_partial)
4454 default: strcat (new_opt, " -mgpr-??"); break;
4455 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break;
4456 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break;
4459 switch (old_partial)
4461 default: strcat (old_opt, " -mgpr-??"); break;
4462 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break;
4463 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break;
4467 /* Warn if different # of fprs are used. Note, 0 means nothing is
4468 said about the size of fprs. */
4469 new_partial = (new_flags & EF_FRV_FPR_MASK);
4470 old_partial = (old_flags & EF_FRV_FPR_MASK);
4471 if (new_partial == old_partial)
4474 else if (new_partial == 0)
4477 else if (old_partial == 0)
4478 old_flags |= new_partial;
4482 switch (new_partial)
4484 default: strcat (new_opt, " -mfpr-?"); break;
4485 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break;
4486 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break;
4487 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break;
4490 switch (old_partial)
4492 default: strcat (old_opt, " -mfpr-?"); break;
4493 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break;
4494 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break;
4495 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break;
4499 /* Warn if different dword support was used. Note, 0 means nothing is
4500 said about the dword support. */
4501 new_partial = (new_flags & EF_FRV_DWORD_MASK);
4502 old_partial = (old_flags & EF_FRV_DWORD_MASK);
4503 if (new_partial == old_partial)
4506 else if (new_partial == 0)
4509 else if (old_partial == 0)
4510 old_flags |= new_partial;
4514 switch (new_partial)
4516 default: strcat (new_opt, " -mdword-?"); break;
4517 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break;
4518 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break;
4521 switch (old_partial)
4523 default: strcat (old_opt, " -mdword-?"); break;
4524 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break;
4525 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break;
4529 /* Or in flags that accumulate (ie, if one module uses it, mark that the
4531 old_flags |= new_flags & (EF_FRV_DOUBLE
4534 | EF_FRV_NON_PIC_RELOCS);
4536 /* If any module was compiled without -G0, clear the G0 bit. */
4537 old_flags = ((old_flags & ~ EF_FRV_G0)
4538 | (old_flags & new_flags & EF_FRV_G0));
4540 /* If any module was compiled without -mnopack, clear the mnopack bit. */
4541 old_flags = ((old_flags & ~ EF_FRV_NOPACK)
4542 | (old_flags & new_flags & EF_FRV_NOPACK));
4544 /* We don't have to do anything if the pic flags are the same, or the new
4545 module(s) were compiled with -mlibrary-pic. */
4546 new_partial = (new_flags & EF_FRV_PIC_FLAGS);
4547 old_partial = (old_flags & EF_FRV_PIC_FLAGS);
4548 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0))
4551 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
4552 flags if any from the new module. */
4553 else if ((old_partial & EF_FRV_LIBPIC) != 0)
4554 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial;
4556 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
4557 else if (new_partial != 0 && old_partial != 0)
4558 old_flags |= new_partial;
4560 /* One module was compiled for pic and the other was not, see if we have
4561 had any relocations that are not pic-safe. */
4564 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0)
4565 old_flags |= new_partial;
4568 old_flags &= ~ EF_FRV_PIC_FLAGS;
4569 #ifndef FRV_NO_PIC_ERROR
4571 (*_bfd_error_handler)
4572 (_("%s: compiled with %s and linked with modules that use non-pic relocations"),
4573 bfd_get_filename (ibfd),
4574 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic");
4579 /* Warn if different cpu is used (allow a specific cpu to override
4580 the generic cpu). */
4581 new_partial = (new_flags & EF_FRV_CPU_MASK);
4582 old_partial = (old_flags & EF_FRV_CPU_MASK);
4583 if (frv_elf_arch_extension_p (new_partial, old_partial))
4586 else if (frv_elf_arch_extension_p (old_partial, new_partial))
4587 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial;
4591 switch (new_partial)
4593 default: strcat (new_opt, " -mcpu=?"); break;
4594 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break;
4595 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break;
4596 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break;
4597 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break;
4598 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break;
4599 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break;
4600 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break;
4601 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break;
4602 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break;
4605 switch (old_partial)
4607 default: strcat (old_opt, " -mcpu=?"); break;
4608 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break;
4609 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break;
4610 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break;
4611 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break;
4612 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break;
4613 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break;
4614 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break;
4615 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break;
4616 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break;
4620 /* Print out any mismatches from above. */
4624 (*_bfd_error_handler)
4625 (_("%s: compiled with %s and linked with modules compiled with %s"),
4626 bfd_get_filename (ibfd), new_opt, old_opt);
4629 /* Warn about any other mismatches */
4630 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS);
4631 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS);
4632 if (new_partial != old_partial)
4634 old_flags |= new_partial;
4636 (*_bfd_error_handler)
4637 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"),
4638 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial);
4642 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
4643 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE)
4644 old_flags |= EF_FRV_NOPACK;
4646 /* Update the old flags now with changes made above. */
4647 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK;
4648 elf_elfheader (obfd)->e_flags = old_flags;
4649 if (old_partial != (old_flags & EF_FRV_CPU_MASK))
4650 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd));
4652 if (((new_flags & EF_FRV_FDPIC) == 0)
4653 != (! IS_FDPIC (ibfd)))
4656 if (IS_FDPIC (obfd))
4657 (*_bfd_error_handler)
4658 (_("%s: cannot link non-fdpic object file into fdpic executable"),
4659 bfd_get_filename (ibfd));
4661 (*_bfd_error_handler)
4662 (_("%s: cannot link fdpic object file into non-fdpic executable"),
4663 bfd_get_filename (ibfd));
4667 bfd_set_error (bfd_error_bad_value);
4674 frv_elf_print_private_bfd_data (abfd, ptr)
4678 FILE *file = (FILE *) ptr;
4681 BFD_ASSERT (abfd != NULL && ptr != NULL);
4683 /* Print normal ELF private data. */
4684 _bfd_elf_print_private_bfd_data (abfd, ptr);
4686 flags = elf_elfheader (abfd)->e_flags;
4687 fprintf (file, _("private flags = 0x%lx:"), (long)flags);
4689 switch (flags & EF_FRV_CPU_MASK)
4692 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break;
4693 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break;
4694 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break;
4695 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break;
4696 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break;
4697 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break;
4698 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break;
4699 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break;
4702 switch (flags & EF_FRV_GPR_MASK)
4705 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break;
4706 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break;
4709 switch (flags & EF_FRV_FPR_MASK)
4712 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break;
4713 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break;
4714 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break;
4717 switch (flags & EF_FRV_DWORD_MASK)
4720 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break;
4721 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break;
4724 if (flags & EF_FRV_DOUBLE)
4725 fprintf (file, " -mdouble");
4727 if (flags & EF_FRV_MEDIA)
4728 fprintf (file, " -mmedia");
4730 if (flags & EF_FRV_MULADD)
4731 fprintf (file, " -mmuladd");
4733 if (flags & EF_FRV_PIC)
4734 fprintf (file, " -fpic");
4736 if (flags & EF_FRV_BIGPIC)
4737 fprintf (file, " -fPIC");
4739 if (flags & EF_FRV_LIBPIC)
4740 fprintf (file, " -mlibrary-pic");
4742 if (flags & EF_FRV_FDPIC)
4743 fprintf (file, " -mfdpic");
4745 if (flags & EF_FRV_NON_PIC_RELOCS)
4746 fprintf (file, " non-pic relocations");
4748 if (flags & EF_FRV_G0)
4749 fprintf (file, " -G0");
4756 #define ELF_ARCH bfd_arch_frv
4757 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
4758 #define ELF_MAXPAGESIZE 0x1000
4760 #define TARGET_BIG_SYM bfd_elf32_frv_vec
4761 #define TARGET_BIG_NAME "elf32-frv"
4763 #define elf_info_to_howto frv_info_to_howto_rela
4764 #define elf_backend_relocate_section elf32_frv_relocate_section
4765 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
4766 #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook
4767 #define elf_backend_check_relocs elf32_frv_check_relocs
4768 #define elf_backend_object_p elf32_frv_object_p
4769 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
4771 #define elf_backend_can_gc_sections 1
4772 #define elf_backend_rela_normal 1
4774 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
4775 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
4776 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data
4777 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
4778 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
4780 #define elf_backend_want_got_sym 1
4781 #define elf_backend_got_header_size 0
4782 #define elf_backend_want_got_plt 0
4783 #define elf_backend_plt_readonly 1
4784 #define elf_backend_want_plt_sym 0
4785 #define elf_backend_plt_header_size 0
4787 #define elf_backend_finish_dynamic_sections \
4788 elf32_frv_finish_dynamic_sections
4790 #include "elf32-target.h"
4792 #undef ELF_MAXPAGESIZE
4793 #define ELF_MAXPAGESIZE 0x4000
4795 #undef TARGET_BIG_SYM
4796 #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec
4797 #undef TARGET_BIG_NAME
4798 #define TARGET_BIG_NAME "elf32-frvfdpic"
4800 #define elf32_bed elf32_frvfdpic_bed
4802 #undef elf_info_to_howto_rel
4803 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel
4805 #undef bfd_elf32_bfd_link_hash_table_create
4806 #define bfd_elf32_bfd_link_hash_table_create \
4807 frvfdpic_elf_link_hash_table_create
4808 #undef elf_backend_always_size_sections
4809 #define elf_backend_always_size_sections \
4810 elf32_frvfdpic_always_size_sections
4811 #undef elf_backend_modify_segment_map
4812 #define elf_backend_modify_segment_map \
4813 elf32_frvfdpic_modify_segment_map
4814 #undef bfd_elf32_bfd_copy_private_bfd_data
4815 #define bfd_elf32_bfd_copy_private_bfd_data \
4816 elf32_frvfdpic_copy_private_bfd_data
4818 #undef elf_backend_create_dynamic_sections
4819 #define elf_backend_create_dynamic_sections \
4820 elf32_frvfdpic_create_dynamic_sections
4821 #undef elf_backend_adjust_dynamic_symbol
4822 #define elf_backend_adjust_dynamic_symbol \
4823 elf32_frvfdpic_adjust_dynamic_symbol
4824 #undef elf_backend_size_dynamic_sections
4825 #define elf_backend_size_dynamic_sections \
4826 elf32_frvfdpic_size_dynamic_sections
4827 #undef elf_backend_finish_dynamic_symbol
4828 #define elf_backend_finish_dynamic_symbol \
4829 elf32_frvfdpic_finish_dynamic_symbol
4830 #undef elf_backend_finish_dynamic_sections
4831 #define elf_backend_finish_dynamic_sections \
4832 elf32_frvfdpic_finish_dynamic_sections
4834 #undef elf_backend_can_make_relative_eh_frame
4835 #define elf_backend_can_make_relative_eh_frame \
4836 frvfdpic_elf_use_relative_eh_frame
4837 #undef elf_backend_can_make_lsda_relative_eh_frame
4838 #define elf_backend_can_make_lsda_relative_eh_frame \
4839 frvfdpic_elf_use_relative_eh_frame
4840 #undef elf_backend_encode_eh_address
4841 #define elf_backend_encode_eh_address \
4842 frvfdpic_elf_encode_eh_address
4844 #undef elf_backend_may_use_rel_p
4845 #define elf_backend_may_use_rel_p 1
4846 #undef elf_backend_may_use_rela_p
4847 #define elf_backend_may_use_rela_p 1
4848 /* We use REL for dynamic relocations only. */
4849 #undef elf_backend_default_use_rela_p
4850 #define elf_backend_default_use_rela_p 1
4852 #undef elf_backend_omit_section_dynsym
4853 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym
4855 #include "elf32-target.h"