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* coff-arm.c (coff_arm_link_hash_table_create): Use bfd_zmalloc.
[deliverable/binutils-gdb.git] / bfd / elf32-lm32.c
CommitLineData
84e94c90 1/* Lattice Mico32-specific support for 32-bit ELF
1d7e9d18 2 Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
84e94c90
NC		 3 Contributed by Jon Beniston <jon@beniston.com>
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
84e94c90 22#include "sysdep.h"
691bf19c 23#include "bfd.h"
84e94c90
NC		 24#include "libbfd.h"
25#include "elf-bfd.h"
26#include "elf/lm32.h"
27
28#define DEFAULT_STACK_SIZE 0x20000
29
30#define PLT_ENTRY_SIZE 20
31
32#define PLT0_ENTRY_WORD0 0
33#define PLT0_ENTRY_WORD1 0
34#define PLT0_ENTRY_WORD2 0
35#define PLT0_ENTRY_WORD3 0
36#define PLT0_ENTRY_WORD4 0
37
38#define PLT0_PIC_ENTRY_WORD0 0
39#define PLT0_PIC_ENTRY_WORD1 0
40#define PLT0_PIC_ENTRY_WORD2 0
41#define PLT0_PIC_ENTRY_WORD3 0
42#define PLT0_PIC_ENTRY_WORD4 0
43
44#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
45
46extern const bfd_target bfd_elf32_lm32fdpic_vec;
47
48#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_lm32fdpic_vec)
49
50static bfd_reloc_status_type lm32_elf_gprel_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52
53/* The linker needs to keep track of the number of relocs that it
54 decides to copy as dynamic relocs in check_relocs for each symbol.
55 This is so that it can later discard them if they are found to be
56 unnecessary. We store the information in a field extending the
57 regular ELF linker hash table. */
58
59struct elf_lm32_dyn_relocs
60{
61 struct elf_lm32_dyn_relocs *next;
62
63 /* The input section of the reloc. */
64 asection *sec;
65
66 /* Total number of relocs copied for the input section. */
67 bfd_size_type count;
68
69 /* Number of pc-relative relocs copied for the input section. */
70 bfd_size_type pc_count;
71};
72
73/* lm32 ELF linker hash entry. */
74
75struct elf_lm32_link_hash_entry
76{
77 struct elf_link_hash_entry root;
78
79 /* Track dynamic relocs copied for this symbol. */
80 struct elf_lm32_dyn_relocs *dyn_relocs;
81};
82
83/* lm32 ELF linker hash table. */
84
85struct elf_lm32_link_hash_table
86{
87 struct elf_link_hash_table root;
88
89 /* Short-cuts to get to dynamic linker sections. */
90 asection *sgot;
91 asection *sgotplt;
92 asection *srelgot;
93 asection *sfixup32;
94 asection *splt;
95 asection *srelplt;
96 asection *sdynbss;
97 asection *srelbss;
98
99 int relocs32;
100};
101
102/* Get the lm32 ELF linker hash table from a link_info structure. */
103
104#define lm32_elf_hash_table(p) \
4dfe6ac6
NC		 105 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
106 == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
84e94c90
NC		 107
108#define lm32fdpic_got_section(info) \
109 (lm32_elf_hash_table (info)->sgot)
110#define lm32fdpic_gotrel_section(info) \
111 (lm32_elf_hash_table (info)->srelgot)
112#define lm32fdpic_fixup32_section(info) \
113 (lm32_elf_hash_table (info)->sfixup32)
114
115struct weak_symbol_list
116{
117 const char *name;
118 struct weak_symbol_list *next;
119};
120
121/* Create an entry in an lm32 ELF linker hash table. */
122
123static struct bfd_hash_entry *
124lm32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
125 struct bfd_hash_table *table,
126 const char *string)
127{
128 struct elf_lm32_link_hash_entry *ret =
129 (struct elf_lm32_link_hash_entry *) entry;
130
131 /* Allocate the structure if it has not already been allocated by a
132 subclass. */
133 if (ret == NULL)
134 ret = bfd_hash_allocate (table,
135 sizeof (struct elf_lm32_link_hash_entry));
136 if (ret == NULL)
137 return NULL;
138
139 /* Call the allocation method of the superclass. */
140 ret = ((struct elf_lm32_link_hash_entry *)
141 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
142 table, string));
143 if (ret != NULL)
144 {
145 struct elf_lm32_link_hash_entry *eh;
146
147 eh = (struct elf_lm32_link_hash_entry *) ret;
148 eh->dyn_relocs = NULL;
149 }
150
151 return (struct bfd_hash_entry *) ret;
152}
153
154/* Create an lm32 ELF linker hash table. */
155
156static struct bfd_link_hash_table *
157lm32_elf_link_hash_table_create (bfd *abfd)
158{
159 struct elf_lm32_link_hash_table *ret;
160 bfd_size_type amt = sizeof (struct elf_lm32_link_hash_table);
161
7bf52ea2 162 ret = bfd_zmalloc (amt);
84e94c90
NC		 163 if (ret == NULL)
164 return NULL;
165
166 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
167 lm32_elf_link_hash_newfunc,
4dfe6ac6
NC		 168 sizeof (struct elf_lm32_link_hash_entry),
169 LM32_ELF_DATA))
84e94c90
NC		 170 {
171 free (ret);
172 return NULL;
173 }
174
84e94c90
NC		 175 return &ret->root.root;
176}
177
178/* Add a fixup to the ROFIXUP section. */
179
180static bfd_vma
181_lm32fdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma relocation)
182{
183 bfd_vma fixup_offset;
184
185 if (rofixup->flags & SEC_EXCLUDE)
186 return -1;
187
188 fixup_offset = rofixup->reloc_count * 4;
189 if (rofixup->contents)
190 {
191 BFD_ASSERT (fixup_offset < rofixup->size);
192 if (fixup_offset < rofixup->size)
193 bfd_put_32 (output_bfd, relocation, rofixup->contents + fixup_offset);
194 }
195 rofixup->reloc_count++;
196
197 return fixup_offset;
198}
199
200/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
201 shortcuts to them in our hash table. */
202
203static bfd_boolean
204create_got_section (bfd *dynobj, struct bfd_link_info *info)
205{
206 struct elf_lm32_link_hash_table *htab;
207 asection *s;
208
209 /* This function may be called more than once. */
3d4d4302
AM		 210 s = bfd_get_linker_section (dynobj, ".got");
211 if (s != NULL)
84e94c90
NC		 212 return TRUE;
213
4dfe6ac6
NC		 214 htab = lm32_elf_hash_table (info);
215 if (htab == NULL)
216 return FALSE;
217
84e94c90
NC		 218 if (! _bfd_elf_create_got_section (dynobj, info))
219 return FALSE;
220
3d4d4302
AM		 221 htab->sgot = bfd_get_linker_section (dynobj, ".got");
222 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
223 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
64e77c6d 224 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
84e94c90
NC		 225 abort ();
226
84e94c90
NC		 227 return TRUE;
228}
229
230/* Create .rofixup sections in DYNOBJ, and set up
231 shortcuts to them in our hash table. */
232
233static bfd_boolean
234create_rofixup_section (bfd *dynobj, struct bfd_link_info *info)
235{
236 struct elf_lm32_link_hash_table *htab;
237 htab = lm32_elf_hash_table (info);
238
4dfe6ac6
NC		 239 if (htab == NULL)
240 return FALSE;
241
242 /* Fixup section for R_LM32_32 relocs. */
3d4d4302
AM		 243 lm32fdpic_fixup32_section (info)
244 = bfd_make_section_anyway_with_flags (dynobj,
245 ".rofixup",
246 (SEC_ALLOC
247 | SEC_LOAD
248 | SEC_HAS_CONTENTS
249 | SEC_IN_MEMORY
250 | SEC_LINKER_CREATED
251 | SEC_READONLY));
84e94c90 252 if (lm32fdpic_fixup32_section (info) == NULL
3d4d4302
AM		 253 || ! bfd_set_section_alignment (dynobj,
254 lm32fdpic_fixup32_section (info), 2))
84e94c90
NC		 255 return FALSE;
256
257 return TRUE;
258}
259
260static reloc_howto_type lm32_elf_howto_table [] =
261{
262 /* This reloc does nothing. */
263 HOWTO (R_LM32_NONE, /* type */
264 0, /* rightshift */
265 2, /* size (0 = byte, 1 = short, 2 = long) */
266 32, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_bitfield,/* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_LM32_NONE", /* name */
272 FALSE, /* partial_inplace */
273 0, /* src_mask */
274 0, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 /* An 8 bit absolute relocation. */
278 HOWTO (R_LM32_8, /* type */
279 0, /* rightshift */
280 0, /* size (0 = byte, 1 = short, 2 = long) */
281 8, /* bitsize */
282 FALSE, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_bitfield,/* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_LM32_8", /* name */
287 FALSE, /* partial_inplace */
288 0, /* src_mask */
289 0xff, /* dst_mask */
290 FALSE), /* pcrel_offset */
291
292 /* A 16 bit absolute relocation. */
293 HOWTO (R_LM32_16, /* type */
294 0, /* rightshift */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
296 16, /* bitsize */
297 FALSE, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_bitfield,/* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_LM32_16", /* name */
302 FALSE, /* partial_inplace */
303 0, /* src_mask */
304 0xffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
306
307 /* A 32 bit absolute relocation. */
308 HOWTO (R_LM32_32, /* type */
309 0, /* rightshift */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
311 32, /* bitsize */
312 FALSE, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_bitfield,/* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_LM32_32", /* name */
317 FALSE, /* partial_inplace */
318 0, /* src_mask */
319 0xffffffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
321
322 HOWTO (R_LM32_HI16, /* type */
323 16, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 16, /* bitsize */
326 FALSE, /* pc_relative */
327 0, /* bitpos */
328 complain_overflow_bitfield,/* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_LM32_HI16", /* name */
331 FALSE, /* partial_inplace */
332 0, /* src_mask */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
335
336 HOWTO (R_LM32_LO16, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
340 FALSE, /* pc_relative */
341 0, /* bitpos */
342 complain_overflow_dont, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_LM32_LO16", /* name */
345 FALSE, /* partial_inplace */
346 0, /* src_mask */
347 0xffff, /* dst_mask */
348 FALSE), /* pcrel_offset */
349
350 HOWTO (R_LM32_GPREL16, /* type */
351 0, /* rightshift */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
353 16, /* bitsize */
354 FALSE, /* pc_relative */
355 0, /* bitpos */
356 complain_overflow_dont, /* complain_on_overflow */
357 lm32_elf_gprel_reloc, /* special_function */
358 "R_LM32_GPREL16", /* name */
359 FALSE, /* partial_inplace */
360 0, /* src_mask */
361 0xffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
363
364 HOWTO (R_LM32_CALL, /* type */
365 2, /* rightshift */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
367 26, /* bitsize */
368 TRUE, /* pc_relative */
369 0, /* bitpos */
370 complain_overflow_signed, /* complain_on_overflow */
371 bfd_elf_generic_reloc, /* special_function */
372 "R_LM32_CALL", /* name */
373 FALSE, /* partial_inplace */
374 0, /* src_mask */
375 0x3ffffff, /* dst_mask */
376 TRUE), /* pcrel_offset */
377
378 HOWTO (R_LM32_BRANCH, /* type */
379 2, /* rightshift */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
381 16, /* bitsize */
382 TRUE, /* pc_relative */
383 0, /* bitpos */
384 complain_overflow_signed, /* complain_on_overflow */
385 bfd_elf_generic_reloc, /* special_function */
386 "R_LM32_BRANCH", /* name */
387 FALSE, /* partial_inplace */
388 0, /* src_mask */
389 0xffff, /* dst_mask */
390 TRUE), /* pcrel_offset */
391
392 /* GNU extension to record C++ vtable hierarchy. */
393 HOWTO (R_LM32_GNU_VTINHERIT, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 0, /* bitsize */
397 FALSE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_dont, /* complain_on_overflow */
400 NULL, /* special_function */
401 "R_LM32_GNU_VTINHERIT", /* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0, /* dst_mask */
405 FALSE), /* pcrel_offset */
406
407 /* GNU extension to record C++ vtable member usage. */
408 HOWTO (R_LM32_GNU_VTENTRY, /* type */
409 0, /* rightshift */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
411 0, /* bitsize */
412 FALSE, /* pc_relative */
413 0, /* bitpos */
414 complain_overflow_dont, /* complain_on_overflow */
415 _bfd_elf_rel_vtable_reloc_fn,/* special_function */
416 "R_LM32_GNU_VTENTRY", /* name */
417 FALSE, /* partial_inplace */
418 0, /* src_mask */
419 0, /* dst_mask */
420 FALSE), /* pcrel_offset */
421
422 HOWTO (R_LM32_16_GOT, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 16, /* bitsize */
426 FALSE, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_signed, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_LM32_16_GOT", /* name */
431 FALSE, /* partial_inplace */
432 0, /* src_mask */
433 0xffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
435
436 HOWTO (R_LM32_GOTOFF_HI16, /* type */
437 16, /* rightshift */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
439 16, /* bitsize */
440 FALSE, /* pc_relative */
441 0, /* bitpos */
442 complain_overflow_dont, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_LM32_GOTOFF_HI16", /* name */
445 FALSE, /* partial_inplace */
446 0xffff, /* src_mask */
447 0xffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
449
450 HOWTO (R_LM32_GOTOFF_LO16, /* type */
451 0, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 16, /* bitsize */
454 FALSE, /* pc_relative */
455 0, /* bitpos */
456 complain_overflow_dont, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_LM32_GOTOFF_LO16", /* name */
459 FALSE, /* partial_inplace */
460 0xffff, /* src_mask */
461 0xffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
463
464 HOWTO (R_LM32_COPY, /* type */
465 0, /* rightshift */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
467 32, /* bitsize */
468 FALSE, /* pc_relative */
469 0, /* bitpos */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 bfd_elf_generic_reloc, /* special_function */
472 "R_LM32_COPY", /* name */
473 FALSE, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 FALSE), /* pcrel_offset */
477
478 HOWTO (R_LM32_GLOB_DAT, /* type */
479 0, /* rightshift */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
481 32, /* bitsize */
482 FALSE, /* pc_relative */
483 0, /* bitpos */
484 complain_overflow_bitfield, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_LM32_GLOB_DAT", /* name */
487 FALSE, /* partial_inplace */
488 0xffffffff, /* src_mask */
489 0xffffffff, /* dst_mask */
490 FALSE), /* pcrel_offset */
491
492 HOWTO (R_LM32_JMP_SLOT, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_LM32_JMP_SLOT", /* name */
501 FALSE, /* partial_inplace */
502 0xffffffff, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 HOWTO (R_LM32_RELATIVE, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 32, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_LM32_RELATIVE", /* name */
515 FALSE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
519
520};
521
522/* Map BFD reloc types to lm32 ELF reloc types. */
523
524struct lm32_reloc_map
525{
526 bfd_reloc_code_real_type bfd_reloc_val;
527 unsigned char elf_reloc_val;
528};
529
530static const struct lm32_reloc_map lm32_reloc_map[] =
531{
532 { BFD_RELOC_NONE, R_LM32_NONE },
533 { BFD_RELOC_8, R_LM32_8 },
534 { BFD_RELOC_16, R_LM32_16 },
535 { BFD_RELOC_32, R_LM32_32 },
536 { BFD_RELOC_HI16, R_LM32_HI16 },
537 { BFD_RELOC_LO16, R_LM32_LO16 },
538 { BFD_RELOC_GPREL16, R_LM32_GPREL16 },
539 { BFD_RELOC_LM32_CALL, R_LM32_CALL },
540 { BFD_RELOC_LM32_BRANCH, R_LM32_BRANCH },
541 { BFD_RELOC_VTABLE_INHERIT, R_LM32_GNU_VTINHERIT },
542 { BFD_RELOC_VTABLE_ENTRY, R_LM32_GNU_VTENTRY },
543 { BFD_RELOC_LM32_16_GOT, R_LM32_16_GOT },
544 { BFD_RELOC_LM32_GOTOFF_HI16, R_LM32_GOTOFF_HI16 },
545 { BFD_RELOC_LM32_GOTOFF_LO16, R_LM32_GOTOFF_LO16 },
546 { BFD_RELOC_LM32_COPY, R_LM32_COPY },
547 { BFD_RELOC_LM32_GLOB_DAT, R_LM32_GLOB_DAT },
548 { BFD_RELOC_LM32_JMP_SLOT, R_LM32_JMP_SLOT },
549 { BFD_RELOC_LM32_RELATIVE, R_LM32_RELATIVE },
550};
551
552static reloc_howto_type *
553lm32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
554 bfd_reloc_code_real_type code)
555{
556 unsigned int i;
557
558 for (i = 0; i < sizeof (lm32_reloc_map) / sizeof (lm32_reloc_map[0]); i++)
559 if (lm32_reloc_map[i].bfd_reloc_val == code)
560 return &lm32_elf_howto_table[lm32_reloc_map[i].elf_reloc_val];
561 return NULL;
562}
563
564static reloc_howto_type *
565lm32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
566 const char *r_name)
567{
568 unsigned int i;
569
570 for (i = 0;
571 i < sizeof (lm32_elf_howto_table) / sizeof (lm32_elf_howto_table[0]);
572 i++)
573 if (lm32_elf_howto_table[i].name != NULL
574 && strcasecmp (lm32_elf_howto_table[i].name, r_name) == 0)
575 return &lm32_elf_howto_table[i];
576
577 return NULL;
578}
579
580
581/* Set the howto pointer for an Lattice Mico32 ELF reloc. */
582
583static void
584lm32_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
585 arelent *cache_ptr,
586 Elf_Internal_Rela *dst)
587{
588 unsigned int r_type;
589
590 r_type = ELF32_R_TYPE (dst->r_info);
591 BFD_ASSERT (r_type < (unsigned int) R_LM32_max);
592 cache_ptr->howto = &lm32_elf_howto_table[r_type];
593}
594
595/* Set the right machine number for an Lattice Mico32 ELF file. */
596
597static bfd_boolean
598lm32_elf_object_p (bfd *abfd)
599{
600 return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32);
601}
602
603/* Set machine type flags just before file is written out. */
604
605static void
606lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
607{
608 elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32;
609 elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH;
610 switch (bfd_get_mach (abfd))
611 {
612 case bfd_mach_lm32:
613 elf_elfheader (abfd)->e_flags |= E_LM32_MACH;
614 break;
615 default:
616 abort ();
617 }
618}
619
620/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
621 dangerous relocation. */
622
623static bfd_boolean
624lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
625{
626 unsigned int count;
627 asymbol **sym;
628 unsigned int i;
629
630 /* If we've already figured out what GP will be, just return it. */
631 *pgp = _bfd_get_gp_value (output_bfd);
632 if (*pgp)
633 return TRUE;
634
635 count = bfd_get_symcount (output_bfd);
636 sym = bfd_get_outsymbols (output_bfd);
637
638 /* The linker script will have created a symbol named `_gp' with the
639 appropriate value. */
640 if (sym == NULL)
641 i = count;
642 else
643 {
644 for (i = 0; i < count; i++, sym++)
645 {
646 const char *name;
647
648 name = bfd_asymbol_name (*sym);
649 if (*name == '_' && strcmp (name, "_gp") == 0)
650 {
651 *pgp = bfd_asymbol_value (*sym);
652 _bfd_set_gp_value (output_bfd, *pgp);
653 break;
654 }
655 }
656 }
657
658 if (i >= count)
659 {
660 /* Only get the error once. */
661 *pgp = 4;
662 _bfd_set_gp_value (output_bfd, *pgp);
663 return FALSE;
664 }
665
666 return TRUE;
667}
668
669/* We have to figure out the gp value, so that we can adjust the
670 symbol value correctly. We look up the symbol _gp in the output
671 BFD. If we can't find it, we're stuck. We cache it in the ELF
672 target data. We don't need to adjust the symbol value for an
673 external symbol if we are producing relocatable output. */
674
675static bfd_reloc_status_type
676lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
677 char **error_message, bfd_vma *pgp)
678{
679 if (bfd_is_und_section (symbol->section) && !relocatable)
680 {
681 *pgp = 0;
682 return bfd_reloc_undefined;
683 }
684
685 *pgp = _bfd_get_gp_value (output_bfd);
686 if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0))
687 {
688 if (relocatable)
689 {
690 /* Make up a value. */
691 *pgp = symbol->section->output_section->vma + 0x4000;
692 _bfd_set_gp_value (output_bfd, *pgp);
693 }
694 else if (!lm32_elf_assign_gp (output_bfd, pgp))
695 {
696 *error_message =
697 (char *)
698 _("global pointer relative relocation when _gp not defined");
699 return bfd_reloc_dangerous;
700 }
701 }
702
703 return bfd_reloc_ok;
704}
705
706static bfd_reloc_status_type
707lm32_elf_do_gprel_relocate (bfd *abfd,
708 reloc_howto_type *howto,
709 asection *input_section ATTRIBUTE_UNUSED,
710 bfd_byte *data,
711 bfd_vma offset,
712 bfd_vma symbol_value,
713 bfd_vma addend)
714{
715 return _bfd_final_link_relocate (howto, abfd, input_section,
716 data, offset, symbol_value, addend);
717}
718
719static bfd_reloc_status_type
720lm32_elf_gprel_reloc (bfd *abfd,
721 arelent *reloc_entry,
722 asymbol *symbol,
723 void *data,
724 asection *input_section,
725 bfd *output_bfd,
726 char **msg)
727{
728 bfd_vma relocation;
729 bfd_vma gp;
730 bfd_reloc_status_type r;
731
732 if (output_bfd != (bfd *) NULL
733 && (symbol->flags & BSF_SECTION_SYM) == 0
734 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
735 {
736 reloc_entry->address += input_section->output_offset;
737 return bfd_reloc_ok;
738 }
739
740 if (output_bfd != NULL)
741 return bfd_reloc_ok;
742
743 relocation = symbol->value
744 + symbol->section->output_section->vma + symbol->section->output_offset;
745
746 if ((r =
747 lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok)
748 {
749 relocation = relocation + reloc_entry->addend - gp;
750 reloc_entry->addend = 0;
751 if ((signed) relocation < -32768 || (signed) relocation > 32767)
752 {
753 *msg = _("global pointer relative address out of range");
754 r = bfd_reloc_outofrange;
755 }
756 else
757 {
758 r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto,
759 input_section,
760 data, reloc_entry->address,
761 relocation, reloc_entry->addend);
762 }
763 }
764
765 return r;
766}
767
768/* Find the segment number in which OSEC, and output section, is
769 located. */
770
771static unsigned
772_lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec)
773{
774 struct elf_segment_map *m;
775 Elf_Internal_Phdr *p;
776
777 /* Find the segment that contains the output_section. */
778 for (m = elf_tdata (output_bfd)->segment_map,
779 p = elf_tdata (output_bfd)->phdr;
780 m != NULL;
781 m = m->next, p++)
782 {
783 int i;
784
785 for (i = m->count - 1; i >= 0; i--)
786 if (m->sections[i] == osec)
787 break;
788
789 if (i >= 0)
790 break;
791 }
792
793 return p - elf_tdata (output_bfd)->phdr;
794}
795
796/* Determine if an output section is read-only. */
797
798inline static bfd_boolean
799_lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
800{
801 unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec);
802
803 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
804}
805
806/* Relocate a section */
807
808static bfd_boolean
809lm32_elf_relocate_section (bfd *output_bfd,
810 struct bfd_link_info *info,
811 bfd *input_bfd,
812 asection *input_section,
813 bfd_byte *contents,
814 Elf_Internal_Rela *relocs,
815 Elf_Internal_Sym *local_syms,
816 asection **local_sections)
817{
818 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
819 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
820 Elf_Internal_Rela *rel, *relend;
84e94c90
NC		 821 struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info);
822 bfd *dynobj;
823 bfd_vma *local_got_offsets;
c7e2358a 824 asection *sgot;
84e94c90 825
4dfe6ac6
NC		 826 if (htab == NULL)
827 return FALSE;
828
84e94c90
NC		 829 dynobj = htab->root.dynobj;
830 local_got_offsets = elf_local_got_offsets (input_bfd);
831
832 sgot = htab->sgot;
84e94c90
NC		 833
834 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
835 sym_hashes = elf_sym_hashes (input_bfd);
836
837 rel = relocs;
838 relend = relocs + input_section->reloc_count;
839 for (; rel < relend; rel++)
840 {
841 reloc_howto_type *howto;
842 unsigned int r_type;
843 unsigned long r_symndx;
844 Elf_Internal_Sym *sym;
845 asection *sec;
846 struct elf_link_hash_entry *h;
847 bfd_vma relocation;
848 bfd_vma gp;
849 bfd_reloc_status_type r;
850 const char *name = NULL;
84e94c90
NC		 851
852 r_symndx = ELF32_R_SYM (rel->r_info);
853 r_type = ELF32_R_TYPE (rel->r_info);
854
855 if (r_type == R_LM32_GNU_VTENTRY
856 || r_type == R_LM32_GNU_VTINHERIT )
857 continue;
858
859 h = NULL;
860 sym = NULL;
861 sec = NULL;
862
863 howto = lm32_elf_howto_table + r_type;
864
865 if (r_symndx < symtab_hdr->sh_info)
866 {
867 /* It's a local symbol. */
868 sym = local_syms + r_symndx;
c7e2358a 869 sec = local_sections[r_symndx];
84e94c90
NC		 870 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
871 name = bfd_elf_string_from_elf_section
872 (input_bfd, symtab_hdr->sh_link, sym->st_name);
873 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
874 }
875 else
876 {
877 /* It's a global symbol. */
878 bfd_boolean unresolved_reloc;
879 bfd_boolean warned;
880
881 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
882 r_symndx, symtab_hdr, sym_hashes,
883 h, sec, relocation,
884 unresolved_reloc, warned);
84e94c90
NC		 885 name = h->root.root.string;
886 }
887
dbaa2011 888 if (sec != NULL && discarded_section (sec))
e4067dbb 889 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 890 rel, 1, relend, howto, 0, contents);
84e94c90
NC		 891
892 if (info->relocatable)
893 {
894 /* This is a relocatable link. We don't have to change
895 anything, unless the reloc is against a section symbol,
896 in which case we have to adjust according to where the
897 section symbol winds up in the output section. */
898 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
899 continue;
900
901 /* If partial_inplace, we need to store any additional addend
902 back in the section. */
903 if (! howto->partial_inplace)
904 continue;
905
906 /* Shouldn't reach here. */
907 abort ();
908 r = bfd_reloc_ok;
909 }
910 else
911 {
912 switch (howto->type)
913 {
914 case R_LM32_GPREL16:
915 if (!lm32_elf_assign_gp (output_bfd, &gp))
916 r = bfd_reloc_dangerous;
917 else
918 {
919 relocation = relocation + rel->r_addend - gp;
920 rel->r_addend = 0;
921 if ((signed)relocation < -32768 || (signed)relocation > 32767)
922 r = bfd_reloc_outofrange;
923 else
924 {
925 r = _bfd_final_link_relocate (howto, input_bfd,
926 input_section, contents,
927 rel->r_offset, relocation,
928 rel->r_addend);
929 }
930 }
931 break;
932 case R_LM32_16_GOT:
933 /* Relocation is to the entry for this symbol in the global
934 offset table. */
935 BFD_ASSERT (sgot != NULL);
936 if (h != NULL)
937 {
938 bfd_boolean dyn;
939 bfd_vma off;
940
941 off = h->got.offset;
942 BFD_ASSERT (off != (bfd_vma) -1);
943
944 dyn = htab->root.dynamic_sections_created;
945 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
946 || (info->shared
947 && (info->symbolic
948 || h->dynindx == -1
949 || h->forced_local)
950 && h->def_regular))
951 {
952 /* This is actually a static link, or it is a
953 -Bsymbolic link and the symbol is defined
954 locally, or the symbol was forced to be local
955 because of a version file. We must initialize
956 this entry in the global offset table. Since the
957 offset must always be a multiple of 4, we use the
958 least significant bit to record whether we have
959 initialized it already.
960
961 When doing a dynamic link, we create a .rela.got
962 relocation entry to initialize the value. This
963 is done in the finish_dynamic_symbol routine. */
964 if ((off & 1) != 0)
965 off &= ~1;
966 else
967 {
968 /* Write entry in GOT */
969 bfd_put_32 (output_bfd, relocation,
970 sgot->contents + off);
971 /* Create entry in .rofixup pointing to GOT entry. */
972 if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak)
973 {
974 _lm32fdpic_add_rofixup (output_bfd,
975 lm32fdpic_fixup32_section
976 (info),
977 sgot->output_section->vma
978 + sgot->output_offset
979 + off);
980 }
981 /* Mark GOT entry as having been written. */
982 h->got.offset |= 1;
983 }
984 }
985
986 relocation = sgot->output_offset + off;
987 }
988 else
989 {
990 bfd_vma off;
991 bfd_byte *loc;
992
993 BFD_ASSERT (local_got_offsets != NULL
994 && local_got_offsets[r_symndx] != (bfd_vma) -1);
995
996 /* Get offset into GOT table. */
997 off = local_got_offsets[r_symndx];
998
999 /* The offset must always be a multiple of 4. We use
1000 the least significant bit to record whether we have
1001 already processed this entry. */
1002 if ((off & 1) != 0)
1003 off &= ~1;
1004 else
1005 {
1006 /* Write entry in GOT. */
1007 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1008 /* Create entry in .rofixup pointing to GOT entry. */
1009 if (IS_FDPIC (output_bfd))
1010 {
1011 _lm32fdpic_add_rofixup (output_bfd,
1012 lm32fdpic_fixup32_section
1013 (info),
1014 sgot->output_section->vma
1015 + sgot->output_offset
1016 + off);
1017 }
1018
1019 if (info->shared)
1020 {
1021 asection *srelgot;
1022 Elf_Internal_Rela outrel;
1023
1024 /* We need to generate a R_LM32_RELATIVE reloc
1025 for the dynamic linker. */
3d4d4302
AM		 1026 srelgot = bfd_get_linker_section (dynobj,
1027 ".rela.got");
84e94c90
NC		 1028 BFD_ASSERT (srelgot != NULL);
1029
1030 outrel.r_offset = (sgot->output_section->vma
1031 + sgot->output_offset
1032 + off);
1033 outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
1034 outrel.r_addend = relocation;
1035 loc = srelgot->contents;
1036 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
1037 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1038 ++srelgot->reloc_count;
1039 }
1040
1041 local_got_offsets[r_symndx] |= 1;
1042 }
1043
1044
1045 relocation = sgot->output_offset + off;
1046 }
1047
1048 /* Addend should be zero. */
1049 if (rel->r_addend != 0)
1050 (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT"));
1051
1052 r = _bfd_final_link_relocate (howto,
1053 input_bfd,
1054 input_section,
1055 contents,
1056 rel->r_offset,
1057 relocation,
1058 rel->r_addend);
1059 break;
1060
1061 case R_LM32_GOTOFF_LO16:
1062 case R_LM32_GOTOFF_HI16:
1063 /* Relocation is offset from GOT. */
1064 BFD_ASSERT (sgot != NULL);
1065 relocation -= sgot->output_section->vma;
1066 /* Account for sign-extension. */
1067 if ((r_type == R_LM32_GOTOFF_HI16)
1068 && ((relocation + rel->r_addend) & 0x8000))
1069 rel->r_addend += 0x10000;
1070 r = _bfd_final_link_relocate (howto,
1071 input_bfd,
1072 input_section,
1073 contents,
1074 rel->r_offset,
1075 relocation,
1076 rel->r_addend);
1077 break;
1078
1079 case R_LM32_32:
1080 if (IS_FDPIC (output_bfd))
1081 {
1082 if ((!h) || (h && h->root.type != bfd_link_hash_undefweak))
1083 {
1084 /* Only create .rofixup entries for relocs in loadable sections. */
1085 if ((bfd_get_section_flags (output_bfd, input_section->output_section)
1086 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
1087
1088 {
1089 /* Check address to be modified is writable. */
1090 if (_lm32fdpic_osec_readonly_p (output_bfd,
1091 input_section
1092 ->output_section))
1093 {
1094 info->callbacks->warning
1095 (info,
1096 _("cannot emit dynamic relocations in read-only section"),
1097 name, input_bfd, input_section, rel->r_offset);
1098 return FALSE;
1099 }
1100 /* Create entry in .rofixup section. */
1101 _lm32fdpic_add_rofixup (output_bfd,
1102 lm32fdpic_fixup32_section (info),
1103 input_section->output_section->vma
1104 + input_section->output_offset
1105 + rel->r_offset);
1106 }
1107 }
1108 }
1109 /* Fall through. */
1110
1111 default:
1112 r = _bfd_final_link_relocate (howto,
1113 input_bfd,
1114 input_section,
1115 contents,
1116 rel->r_offset,
1117 relocation,
1118 rel->r_addend);
1119 break;
1120 }
1121 }
1122
1123 if (r != bfd_reloc_ok)
1124 {
84e94c90
NC		 1125 const char *msg = NULL;
1126 arelent bfd_reloc;
84e94c90
NC		 1127
1128 lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel);
1129 howto = bfd_reloc.howto;
1130
1131 if (h != NULL)
1132 name = h->root.root.string;
1133 else
1134 {
1135 name = (bfd_elf_string_from_elf_section
1136 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1137 if (name == NULL || *name == '\0')
1138 name = bfd_section_name (input_bfd, sec);
1139 }
1140
1141 switch (r)
1142 {
1143 case bfd_reloc_overflow:
1144 if ((h != NULL)
1145 && (h->root.type == bfd_link_hash_undefweak))
1146 break;
1147 if (! ((*info->callbacks->reloc_overflow)
1148 (info, (h ? &h->root : NULL), name, howto->name,
1149 (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
1150 return FALSE;
1151 break;
1152
1153 case bfd_reloc_undefined:
1154 if (! ((*info->callbacks->undefined_symbol)
1155 (info, name, input_bfd, input_section,
1156 rel->r_offset, TRUE)))
1157 return FALSE;
1158 break;
1159
1160 case bfd_reloc_outofrange:
1161 msg = _("internal error: out of range error");
1162 goto common_error;
1163
1164 case bfd_reloc_notsupported:
1165 msg = _("internal error: unsupported relocation error");
1166 goto common_error;
1167
1168 case bfd_reloc_dangerous:
1169 msg = _("internal error: dangerous error");
1170 goto common_error;
1171
1172 default:
1173 msg = _("internal error: unknown error");
1174 /* fall through */
1175
1176 common_error:
1177 if (!((*info->callbacks->warning)
1178 (info, msg, name, input_bfd, input_section,
1179 rel->r_offset)))
1180 return FALSE;
1181 break;
1182 }
1183 }
1184 }
1185
1186 return TRUE;
1187}
1188
1189static asection *
1190lm32_elf_gc_mark_hook (asection *sec,
1191 struct bfd_link_info *info,
1192 Elf_Internal_Rela *rel,
1193 struct elf_link_hash_entry *h,
1194 Elf_Internal_Sym *sym)
1195{
1196 if (h != NULL)
1197 switch (ELF32_R_TYPE (rel->r_info))
1198 {
1199 case R_LM32_GNU_VTINHERIT:
1200 case R_LM32_GNU_VTENTRY:
1201 return NULL;
1202 }
1203
1204 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1205}
1206
1207static bfd_boolean
1208lm32_elf_gc_sweep_hook (bfd *abfd,
1209 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1210 asection *sec,
1211 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1212{
1213 /* Update the got entry reference counts for the section being removed. */
1214 Elf_Internal_Shdr *symtab_hdr;
1215 struct elf_link_hash_entry **sym_hashes;
1216 bfd_signed_vma *local_got_refcounts;
1217 const Elf_Internal_Rela *rel, *relend;
1218
1219 elf_section_data (sec)->local_dynrel = NULL;
1220
1221 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1222 sym_hashes = elf_sym_hashes (abfd);
1223 local_got_refcounts = elf_local_got_refcounts (abfd);
1224
1225 relend = relocs + sec->reloc_count;
1226 for (rel = relocs; rel < relend; rel++)
1227 {
1228 unsigned long r_symndx;
1229 struct elf_link_hash_entry *h = NULL;
1230
1231 r_symndx = ELF32_R_SYM (rel->r_info);
1232 if (r_symndx >= symtab_hdr->sh_info)
1233 {
1234 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1235 while (h->root.type == bfd_link_hash_indirect
1236 || h->root.type == bfd_link_hash_warning)
1237 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1238 }
1239
1240 switch (ELF32_R_TYPE (rel->r_info))
1241 {
1242 case R_LM32_16_GOT:
1243 if (h != NULL)
1244 {
1245 if (h->got.refcount > 0)
1246 h->got.refcount--;
1247 }
1248 else
1249 {
1250 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1251 local_got_refcounts[r_symndx]--;
1252 }
1253 break;
1254
1255 default:
1256 break;
1257 }
1258 }
1259 return TRUE;
1260}
1261
1262/* Look through the relocs for a section during the first phase. */
1263
1264static bfd_boolean
1265lm32_elf_check_relocs (bfd *abfd,
1266 struct bfd_link_info *info,
1267 asection *sec,
1268 const Elf_Internal_Rela *relocs)
1269{
1270 Elf_Internal_Shdr *symtab_hdr;
1271 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1272 const Elf_Internal_Rela *rel;
1273 const Elf_Internal_Rela *rel_end;
1274 struct elf_lm32_link_hash_table *htab;
1275 bfd *dynobj;
84e94c90
NC		 1276
1277 if (info->relocatable)
1278 return TRUE;
1279
84e94c90
NC		 1280 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1281 sym_hashes = elf_sym_hashes (abfd);
1282 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
1283 if (!elf_bad_symtab (abfd))
1284 sym_hashes_end -= symtab_hdr->sh_info;
1285
1286 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1287 if (htab == NULL)
1288 return FALSE;
1289
84e94c90 1290 dynobj = htab->root.dynobj;
84e94c90
NC		 1291
1292 rel_end = relocs + sec->reloc_count;
1293 for (rel = relocs; rel < rel_end; rel++)
1294 {
1295 int r_type;
1296 struct elf_link_hash_entry *h;
1297 unsigned long r_symndx;
1298
1299 r_symndx = ELF32_R_SYM (rel->r_info);
1300 r_type = ELF32_R_TYPE (rel->r_info);
1301 if (r_symndx < symtab_hdr->sh_info)
1302 h = NULL;
1303 else
1304 {
1305 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1306 while (h->root.type == bfd_link_hash_indirect
1307 || h->root.type == bfd_link_hash_warning)
1308 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1309 }
1310
1311 /* Some relocs require a global offset table. */
1312 if (htab->sgot == NULL)
1313 {
1314 switch (r_type)
1315 {
1316 case R_LM32_16_GOT:
1317 case R_LM32_GOTOFF_HI16:
1318 case R_LM32_GOTOFF_LO16:
1319 if (dynobj == NULL)
1320 htab->root.dynobj = dynobj = abfd;
1321 if (! create_got_section (dynobj, info))
1322 return FALSE;
1323 break;
1324 }
1325 }
1326
1327 /* Some relocs require a rofixup table. */
1328 if (IS_FDPIC (abfd))
1329 {
1330 switch (r_type)
1331 {
1332 case R_LM32_32:
1333 /* FDPIC requires a GOT if there is a .rofixup section
1334 (Normal ELF doesn't). */
1335 if (dynobj == NULL)
1336 htab->root.dynobj = dynobj = abfd;
1337 if (! create_got_section (dynobj, info))
1338 return FALSE;
1339 /* Create .rofixup section */
1340 if (htab->sfixup32 == NULL)
1341 {
3d4d4302 1342 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1343 return FALSE;
1344 }
1345 break;
1346 case R_LM32_16_GOT:
1347 case R_LM32_GOTOFF_HI16:
1348 case R_LM32_GOTOFF_LO16:
1349 /* Create .rofixup section. */
1350 if (htab->sfixup32 == NULL)
1351 {
3d4d4302
AM		 1352 if (dynobj == NULL)
1353 htab->root.dynobj = dynobj = abfd;
1354 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1355 return FALSE;
1356 }
1357 break;
1358 }
1359 }
1360
1361 switch (r_type)
1362 {
1363 case R_LM32_16_GOT:
1364 if (h != NULL)
1365 h->got.refcount += 1;
1366 else
1367 {
1368 bfd_signed_vma *local_got_refcounts;
1369
1370 /* This is a global offset table entry for a local symbol. */
1371 local_got_refcounts = elf_local_got_refcounts (abfd);
1372 if (local_got_refcounts == NULL)
1373 {
1374 bfd_size_type size;
1375
1376 size = symtab_hdr->sh_info;
1377 size *= sizeof (bfd_signed_vma);
1378 local_got_refcounts = bfd_zalloc (abfd, size);
1379 if (local_got_refcounts == NULL)
1380 return FALSE;
1381 elf_local_got_refcounts (abfd) = local_got_refcounts;
1382 }
1383 local_got_refcounts[r_symndx] += 1;
1384 }
1385 break;
1386
1387 /* This relocation describes the C++ object vtable hierarchy.
1388 Reconstruct it for later use during GC. */
1389 case R_LM32_GNU_VTINHERIT:
1390 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1391 return FALSE;
1392 break;
1393
1394 /* This relocation describes which C++ vtable entries are actually
1395 used. Record for later use during GC. */
1396 case R_LM32_GNU_VTENTRY:
1397 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1398 return FALSE;
1399 break;
1400
1401 }
1402 }
1403
1404 return TRUE;
1405}
1406
1407/* Finish up the dynamic sections. */
1408
1409static bfd_boolean
1410lm32_elf_finish_dynamic_sections (bfd *output_bfd,
1411 struct bfd_link_info *info)
1412{
1413 struct elf_lm32_link_hash_table *htab;
1414 bfd *dynobj;
1415 asection *sdyn;
1416 asection *sgot;
1417
1418 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1419 if (htab == NULL)
1420 return FALSE;
1421
84e94c90
NC		 1422 dynobj = htab->root.dynobj;
1423
1424 sgot = htab->sgotplt;
3d4d4302 1425 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
84e94c90
NC		 1426
1427 if (htab->root.dynamic_sections_created)
1428 {
1429 asection *splt;
1430 Elf32_External_Dyn *dyncon, *dynconend;
1431
1432 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1433
1434 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1435 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1436
1437 for (; dyncon < dynconend; dyncon++)
1438 {
1439 Elf_Internal_Dyn dyn;
84e94c90
NC		 1440 asection *s;
1441
1442 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1443
1444 switch (dyn.d_tag)
1445 {
1446 default:
1447 break;
1448
1449 case DT_PLTGOT:
84e94c90
NC		 1450 s = htab->sgot->output_section;
1451 goto get_vma;
1452 case DT_JMPREL:
84e94c90
NC		 1453 s = htab->srelplt->output_section;
1454 get_vma:
1455 BFD_ASSERT (s != NULL);
1456 dyn.d_un.d_ptr = s->vma;
1457 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1458 break;
1459
1460 case DT_PLTRELSZ:
1461 s = htab->srelplt->output_section;
1462 BFD_ASSERT (s != NULL);
1463 dyn.d_un.d_val = s->size;
1464 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1465 break;
1466
1467 case DT_RELASZ:
1468 /* My reading of the SVR4 ABI indicates that the
1469 procedure linkage table relocs (DT_JMPREL) should be
1470 included in the overall relocs (DT_RELA). This is
1471 what Solaris does. However, UnixWare can not handle
1472 that case. Therefore, we override the DT_RELASZ entry
1473 here to make it not include the JMPREL relocs. Since
1474 the linker script arranges for .rela.plt to follow all
1475 other relocation sections, we don't have to worry
1476 about changing the DT_RELA entry. */
1477 if (htab->srelplt != NULL)
1478 {
1479 s = htab->srelplt->output_section;
1480 dyn.d_un.d_val -= s->size;
1481 }
1482 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1483 break;
1484 }
1485 }
1486
1487 /* Fill in the first entry in the procedure linkage table. */
1488 splt = htab->splt;
1489 if (splt && splt->size > 0)
1490 {
1491 if (info->shared)
1492 {
1493 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
1494 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
1495 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
1496 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
1497 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
1498 }
1499 else
1500 {
1501 unsigned long addr;
1502 /* addr = .got + 4 */
1503 addr = sgot->output_section->vma + sgot->output_offset + 4;
1504 bfd_put_32 (output_bfd,
1505 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1506 splt->contents);
1507 bfd_put_32 (output_bfd,
1508 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1509 splt->contents + 4);
1510 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1511 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1512 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1513 }
1514
1515 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
1516 PLT_ENTRY_SIZE;
1517 }
1518 }
1519
1520 /* Fill in the first three entries in the global offset table. */
1521 if (sgot && sgot->size > 0)
1522 {
1523 if (sdyn == NULL)
1524 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1525 else
1526 bfd_put_32 (output_bfd,
1527 sdyn->output_section->vma + sdyn->output_offset,
1528 sgot->contents);
1529 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1530 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1531
1532 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1533 if (elf_section_data (sgot->output_section) != NULL)
1534 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1535 }
1536
1537 if (lm32fdpic_fixup32_section (info))
1538 {
1539 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
1540 bfd_vma got_value = hgot->root.u.def.value
1541 + hgot->root.u.def.section->output_section->vma
1542 + hgot->root.u.def.section->output_offset;
1543 struct bfd_link_hash_entry *hend;
1544
1545 /* Last entry is pointer to GOT. */
1546 _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value);
1547
1548 /* Check we wrote enough entries. */
1549 if (lm32fdpic_fixup32_section (info)->size
1550 != (lm32fdpic_fixup32_section (info)->reloc_count * 4))
1551 {
1552 (*_bfd_error_handler)
1553 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1554 lm32fdpic_fixup32_section (info)->size/4,
1555 lm32fdpic_fixup32_section (info)->reloc_count);
1556 return FALSE;
1557 }
1558
1559 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__",
1560 FALSE, FALSE, TRUE);
1561 if (hend
1562 && (hend->type == bfd_link_hash_defined
1563 || hend->type == bfd_link_hash_defweak))
1564 {
1565 bfd_vma value =
1566 lm32fdpic_fixup32_section (info)->output_section->vma
1567 + lm32fdpic_fixup32_section (info)->output_offset
1568 + lm32fdpic_fixup32_section (info)->size
1569 - hend->u.def.section->output_section->vma
1570 - hend->u.def.section->output_offset;
1571 BFD_ASSERT (hend->u.def.value == value);
1572 if (hend->u.def.value != value)
1573 {
1574 (*_bfd_error_handler)
1575 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value);
1576 return FALSE;
1577 }
1578 }
1579 }
1580
1581 return TRUE;
1582}
1583
1584/* Finish up dynamic symbol handling. We set the contents of various
1585 dynamic sections here. */
1586
1587static bfd_boolean
1588lm32_elf_finish_dynamic_symbol (bfd *output_bfd,
1589 struct bfd_link_info *info,
1590 struct elf_link_hash_entry *h,
1591 Elf_Internal_Sym *sym)
1592{
1593 struct elf_lm32_link_hash_table *htab;
84e94c90
NC		 1594 bfd_byte *loc;
1595
1596 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1597 if (htab == NULL)
1598 return FALSE;
1599
84e94c90
NC		 1600 if (h->plt.offset != (bfd_vma) -1)
1601 {
1602 asection *splt;
1603 asection *sgot;
1604 asection *srela;
1605
1606 bfd_vma plt_index;
1607 bfd_vma got_offset;
1608 Elf_Internal_Rela rela;
1609
1610 /* This symbol has an entry in the procedure linkage table. Set
1611 it up. */
1612 BFD_ASSERT (h->dynindx != -1);
1613
1614 splt = htab->splt;
1615 sgot = htab->sgotplt;
1616 srela = htab->srelplt;
1617 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1618
1619 /* Get the index in the procedure linkage table which
1620 corresponds to this symbol. This is the index of this symbol
1621 in all the symbols for which we are making plt entries. The
1622 first entry in the procedure linkage table is reserved. */
1623 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1624
1625 /* Get the offset into the .got table of the entry that
1626 corresponds to this function. Each .got entry is 4 bytes.
1627 The first three are reserved. */
1628 got_offset = (plt_index + 3) * 4;
1629
1630 /* Fill in the entry in the procedure linkage table. */
1631 if (! info->shared)
1632 {
1633 /* TODO */
1634 }
1635 else
1636 {
1637 /* TODO */
1638 }
1639
1640 /* Fill in the entry in the global offset table. */
1641 bfd_put_32 (output_bfd,
1642 (splt->output_section->vma
1643 + splt->output_offset
1644 + h->plt.offset
1645 + 12), /* same offset */
1646 sgot->contents + got_offset);
1647
1648 /* Fill in the entry in the .rela.plt section. */
1649 rela.r_offset = (sgot->output_section->vma
1650 + sgot->output_offset
1651 + got_offset);
1652 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT);
1653 rela.r_addend = 0;
1654 loc = srela->contents;
1655 loc += plt_index * sizeof (Elf32_External_Rela);
1656 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1657
1658 if (!h->def_regular)
1659 {
1660 /* Mark the symbol as undefined, rather than as defined in
1661 the .plt section. Leave the value alone. */
1662 sym->st_shndx = SHN_UNDEF;
1663 }
1664
1665 }
1666
1667 if (h->got.offset != (bfd_vma) -1)
1668 {
1669 asection *sgot;
1670 asection *srela;
1671 Elf_Internal_Rela rela;
1672
1673 /* This symbol has an entry in the global offset table. Set it
1674 up. */
1675 sgot = htab->sgot;
1676 srela = htab->srelgot;
1677 BFD_ASSERT (sgot != NULL && srela != NULL);
1678
1679 rela.r_offset = (sgot->output_section->vma
1680 + sgot->output_offset
1681 + (h->got.offset &~ 1));
1682
1683 /* If this is a -Bsymbolic link, and the symbol is defined
1684 locally, we just want to emit a RELATIVE reloc. Likewise if
1685 the symbol was forced to be local because of a version file.
1686 The entry in the global offset table will already have been
1687 initialized in the relocate_section function. */
1688 if (info->shared
1689 && (info->symbolic
1690 || h->dynindx == -1
1691 || h->forced_local)
1692 && h->def_regular)
1693 {
1694 rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
1695 rela.r_addend = (h->root.u.def.value
1696 + h->root.u.def.section->output_section->vma
1697 + h->root.u.def.section->output_offset);
1698 }
1699 else
1700 {
1701 BFD_ASSERT ((h->got.offset & 1) == 0);
1702 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1703 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT);
1704 rela.r_addend = 0;
1705 }
1706
1707 loc = srela->contents;
1708 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1709 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1710 ++srela->reloc_count;
1711 }
1712
1713 if (h->needs_copy)
1714 {
1715 asection *s;
1716 Elf_Internal_Rela rela;
1717
1718 /* This symbols needs a copy reloc. Set it up. */
1719 BFD_ASSERT (h->dynindx != -1
1720 && (h->root.type == bfd_link_hash_defined
1721 || h->root.type == bfd_link_hash_defweak));
1722
3d4d4302 1723 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
84e94c90
NC		 1724 BFD_ASSERT (s != NULL);
1725
1726 rela.r_offset = (h->root.u.def.value
1727 + h->root.u.def.section->output_section->vma
1728 + h->root.u.def.section->output_offset);
1729 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY);
1730 rela.r_addend = 0;
1731 loc = s->contents;
1732 loc += s->reloc_count * sizeof (Elf32_External_Rela);
1733 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1734 ++s->reloc_count;
1735 }
1736
1737 /* Mark some specially defined symbols as absolute. */
9637f6ef 1738 if (h == htab->root.hdynamic || h == htab->root.hgot)
84e94c90
NC		 1739 sym->st_shndx = SHN_ABS;
1740
1741 return TRUE;
1742}
1743
1744static enum elf_reloc_type_class
1745lm32_elf_reloc_type_class (const Elf_Internal_Rela *rela)
1746{
1747 switch ((int) ELF32_R_TYPE (rela->r_info))
1748 {
1749 case R_LM32_RELATIVE: return reloc_class_relative;
1750 case R_LM32_JMP_SLOT: return reloc_class_plt;
1751 case R_LM32_COPY: return reloc_class_copy;
1752 default: return reloc_class_normal;
1753 }
1754}
1755
1756/* Adjust a symbol defined by a dynamic object and referenced by a
1757 regular object. The current definition is in some section of the
1758 dynamic object, but we're not including those sections. We have to
1759 change the definition to something the rest of the link can
1760 understand. */
1761
1762static bfd_boolean
1763lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1764 struct elf_link_hash_entry *h)
1765{
1766 struct elf_lm32_link_hash_table *htab;
1767 struct elf_lm32_link_hash_entry *eh;
1768 struct elf_lm32_dyn_relocs *p;
1769 bfd *dynobj;
1770 asection *s;
1771
1772 dynobj = elf_hash_table (info)->dynobj;
1773
1774 /* Make sure we know what is going on here. */
1775 BFD_ASSERT (dynobj != NULL
1776 && (h->needs_plt
1777 || h->u.weakdef != NULL
1778 || (h->def_dynamic
1779 && h->ref_regular
1780 && !h->def_regular)));
1781
1782 /* If this is a function, put it in the procedure linkage table. We
1783 will fill in the contents of the procedure linkage table later,
1784 when we know the address of the .got section. */
1785 if (h->type == STT_FUNC
1786 || h->needs_plt)
1787 {
1788 if (! info->shared
1789 && !h->def_dynamic
1790 && !h->ref_dynamic
1791 && h->root.type != bfd_link_hash_undefweak
1792 && h->root.type != bfd_link_hash_undefined)
1793 {
1794 /* This case can occur if we saw a PLT reloc in an input
1795 file, but the symbol was never referred to by a dynamic
1796 object. In such a case, we don't actually need to build
1797 a procedure linkage table, and we can just do a PCREL
1798 reloc instead. */
1799 h->plt.offset = (bfd_vma) -1;
1800 h->needs_plt = 0;
1801 }
1802
1803 return TRUE;
1804 }
1805 else
1806 h->plt.offset = (bfd_vma) -1;
1807
1808 /* If this is a weak symbol, and there is a real definition, the
1809 processor independent code will have arranged for us to see the
1810 real definition first, and we can just use the same value. */
1811 if (h->u.weakdef != NULL)
1812 {
1813 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1814 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1815 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1816 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1817 return TRUE;
1818 }
1819
1820 /* This is a reference to a symbol defined by a dynamic object which
1821 is not a function. */
1822
1823 /* If we are creating a shared library, we must presume that the
1824 only references to the symbol are via the global offset table.
1825 For such cases we need not do anything here; the relocations will
1826 be handled correctly by relocate_section. */
1827 if (info->shared)
1828 return TRUE;
1829
1830 /* If there are no references to this symbol that do not use the
1831 GOT, we don't need to generate a copy reloc. */
1832 if (!h->non_got_ref)
1833 return TRUE;
1834
1835 /* If -z nocopyreloc was given, we won't generate them either. */
1836 if (info->nocopyreloc)
1837 {
1838 h->non_got_ref = 0;
1839 return TRUE;
1840 }
1841
1842 eh = (struct elf_lm32_link_hash_entry *) h;
1843 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1844 {
1845 s = p->sec->output_section;
1846 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1847 break;
1848 }
1849
1850 /* If we didn't find any dynamic relocs in sections which needs the
1851 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1852 the copy reloc. */
1853 if (p == NULL)
1854 {
1855 h->non_got_ref = 0;
1856 return TRUE;
1857 }
1858
84e94c90
NC		 1859 /* We must allocate the symbol in our .dynbss section, which will
1860 become part of the .bss section of the executable. There will be
1861 an entry for this symbol in the .dynsym section. The dynamic
1862 object will contain position independent code, so all references
1863 from the dynamic object to this symbol will go through the global
1864 offset table. The dynamic linker will use the .dynsym entry to
1865 determine the address it must put in the global offset table, so
1866 both the dynamic object and the regular object will refer to the
1867 same memory location for the variable. */
1868
1869 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1870 if (htab == NULL)
1871 return FALSE;
1872
84e94c90
NC		 1873 s = htab->sdynbss;
1874 BFD_ASSERT (s != NULL);
1875
1876 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1877 to copy the initial value out of the dynamic object and into the
1878 runtime process image. We need to remember the offset into the
1879 .rela.bss section we are going to use. */
1d7e9d18 1880 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
84e94c90
NC		 1881 {
1882 asection *srel;
1883
1884 srel = htab->srelbss;
1885 BFD_ASSERT (srel != NULL);
1886 srel->size += sizeof (Elf32_External_Rela);
1887 h->needs_copy = 1;
1888 }
1889
1890 return _bfd_elf_adjust_dynamic_copy (h, s);
1891}
1892
1893/* Allocate space in .plt, .got and associated reloc sections for
1894 dynamic relocs. */
1895
1896static bfd_boolean
1897allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1898{
1899 struct bfd_link_info *info;
1900 struct elf_lm32_link_hash_table *htab;
1901 struct elf_lm32_link_hash_entry *eh;
1902 struct elf_lm32_dyn_relocs *p;
1903
1904 if (h->root.type == bfd_link_hash_indirect)
1905 return TRUE;
1906
84e94c90
NC		 1907 info = (struct bfd_link_info *) inf;
1908 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1909 if (htab == NULL)
1910 return FALSE;
84e94c90
NC		 1911
1912 eh = (struct elf_lm32_link_hash_entry *) h;
1913
1914 if (htab->root.dynamic_sections_created
1915 && h->plt.refcount > 0)
1916 {
1917 /* Make sure this symbol is output as a dynamic symbol.
1918 Undefined weak syms won't yet be marked as dynamic. */
1919 if (h->dynindx == -1
1920 && !h->forced_local)
1921 {
1922 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1923 return FALSE;
1924 }
1925
1926 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1927 {
1928 asection *s = htab->splt;
1929
1930 /* If this is the first .plt entry, make room for the special
1931 first entry. */
1932 if (s->size == 0)
1933 s->size += PLT_ENTRY_SIZE;
1934
1935 h->plt.offset = s->size;
1936
1937 /* If this symbol is not defined in a regular file, and we are
1938 not generating a shared library, then set the symbol to this
1939 location in the .plt. This is required to make function
1940 pointers compare as equal between the normal executable and
1941 the shared library. */
1942 if (! info->shared
1943 && !h->def_regular)
1944 {
1945 h->root.u.def.section = s;
1946 h->root.u.def.value = h->plt.offset;
1947 }
1948
1949 /* Make room for this entry. */
1950 s->size += PLT_ENTRY_SIZE;
1951
1952 /* We also need to make an entry in the .got.plt section, which
1953 will be placed in the .got section by the linker script. */
1954 htab->sgotplt->size += 4;
1955
1956 /* We also need to make an entry in the .rel.plt section. */
1957 htab->srelplt->size += sizeof (Elf32_External_Rela);
1958 }
1959 else
1960 {
1961 h->plt.offset = (bfd_vma) -1;
1962 h->needs_plt = 0;
1963 }
1964 }
1965 else
1966 {
1967 h->plt.offset = (bfd_vma) -1;
1968 h->needs_plt = 0;
1969 }
1970
1971 if (h->got.refcount > 0)
1972 {
1973 asection *s;
1974 bfd_boolean dyn;
1975
1976 /* Make sure this symbol is output as a dynamic symbol.
1977 Undefined weak syms won't yet be marked as dynamic. */
1978 if (h->dynindx == -1
1979 && !h->forced_local)
1980 {
1981 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1982 return FALSE;
1983 }
1984
1985 s = htab->sgot;
1986
1987 h->got.offset = s->size;
1988 s->size += 4;
1989 dyn = htab->root.dynamic_sections_created;
1990 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
1991 htab->srelgot->size += sizeof (Elf32_External_Rela);
1992 }
1993 else
1994 h->got.offset = (bfd_vma) -1;
1995
1996 if (eh->dyn_relocs == NULL)
1997 return TRUE;
1998
1999 /* In the shared -Bsymbolic case, discard space allocated for
2000 dynamic pc-relative relocs against symbols which turn out to be
2001 defined in regular objects. For the normal shared case, discard
2002 space for pc-relative relocs that have become local due to symbol
2003 visibility changes. */
2004
2005 if (info->shared)
2006 {
2007 if (h->def_regular
2008 && (h->forced_local
2009 || info->symbolic))
2010 {
2011 struct elf_lm32_dyn_relocs **pp;
2012
2013 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2014 {
2015 p->count -= p->pc_count;
2016 p->pc_count = 0;
2017 if (p->count == 0)
2018 *pp = p->next;
2019 else
2020 pp = &p->next;
2021 }
2022 }
2023
2024 /* Also discard relocs on undefined weak syms with non-default
2025 visibility. */
2026 if (eh->dyn_relocs != NULL
2027 && h->root.type == bfd_link_hash_undefweak)
2028 {
2029 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2030 eh->dyn_relocs = NULL;
2031
2032 /* Make sure undefined weak symbols are output as a dynamic
2033 symbol in PIEs. */
2034 else if (h->dynindx == -1
2035 && !h->forced_local)
2036 {
2037 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2038 return FALSE;
2039 }
2040 }
2041 }
2042 else
2043 {
2044 /* For the non-shared case, discard space for relocs against
2045 symbols which turn out to need copy relocs or are not
2046 dynamic. */
2047
2048 if (!h->non_got_ref
2049 && ((h->def_dynamic
2050 && !h->def_regular)
2051 || (htab->root.dynamic_sections_created
2052 && (h->root.type == bfd_link_hash_undefweak
2053 || h->root.type == bfd_link_hash_undefined))))
2054 {
2055 /* Make sure this symbol is output as a dynamic symbol.
2056 Undefined weak syms won't yet be marked as dynamic. */
2057 if (h->dynindx == -1
2058 && !h->forced_local)
2059 {
2060 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2061 return FALSE;
2062 }
2063
2064 /* If that succeeded, we know we'll be keeping all the
2065 relocs. */
2066 if (h->dynindx != -1)
2067 goto keep;
2068 }
2069
2070 eh->dyn_relocs = NULL;
2071
2072 keep: ;
2073 }
2074
2075 /* Finally, allocate space. */
2076 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2077 {
2078 asection *sreloc = elf_section_data (p->sec)->sreloc;
2079 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2080 }
2081
2082 return TRUE;
2083}
2084
2085/* Find any dynamic relocs that apply to read-only sections. */
2086
2087static bfd_boolean
2088readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2089{
2090 struct elf_lm32_link_hash_entry *eh;
2091 struct elf_lm32_dyn_relocs *p;
2092
84e94c90
NC		 2093 eh = (struct elf_lm32_link_hash_entry *) h;
2094 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2095 {
2096 asection *s = p->sec->output_section;
2097
2098 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2099 {
2100 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2101
2102 info->flags |= DF_TEXTREL;
2103
2104 /* Not an error, just cut short the traversal. */
2105 return FALSE;
2106 }
2107 }
2108 return TRUE;
2109}
2110
2111/* Set the sizes of the dynamic sections. */
2112
2113static bfd_boolean
2114lm32_elf_size_dynamic_sections (bfd *output_bfd,
2115 struct bfd_link_info *info)
2116{
2117 struct elf_lm32_link_hash_table *htab;
2118 bfd *dynobj;
2119 asection *s;
2120 bfd_boolean relocs;
2121 bfd *ibfd;
2122
2123 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2124 if (htab == NULL)
2125 return FALSE;
2126
84e94c90
NC		 2127 dynobj = htab->root.dynobj;
2128 BFD_ASSERT (dynobj != NULL);
2129
2130 if (htab->root.dynamic_sections_created)
2131 {
2132 /* Set the contents of the .interp section to the interpreter. */
2133 if (info->executable)
2134 {
3d4d4302 2135 s = bfd_get_linker_section (dynobj, ".interp");
84e94c90
NC		 2136 BFD_ASSERT (s != NULL);
2137 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2138 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2139 }
2140 }
2141
2142 /* Set up .got offsets for local syms, and space for local dynamic
2143 relocs. */
2144 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2145 {
2146 bfd_signed_vma *local_got;
2147 bfd_signed_vma *end_local_got;
2148 bfd_size_type locsymcount;
2149 Elf_Internal_Shdr *symtab_hdr;
2150 asection *srel;
2151
2152 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2153 continue;
2154
2155 for (s = ibfd->sections; s != NULL; s = s->next)
2156 {
2157 struct elf_lm32_dyn_relocs *p;
2158
2159 for (p = ((struct elf_lm32_dyn_relocs *)
2160 elf_section_data (s)->local_dynrel);
2161 p != NULL;
2162 p = p->next)
2163 {
2164 if (! bfd_is_abs_section (p->sec)
2165 && bfd_is_abs_section (p->sec->output_section))
2166 {
2167 /* Input section has been discarded, either because
2168 it is a copy of a linkonce section or due to
2169 linker script /DISCARD/, so we'll be discarding
2170 the relocs too. */
2171 }
2172 else if (p->count != 0)
2173 {
2174 srel = elf_section_data (p->sec)->sreloc;
2175 srel->size += p->count * sizeof (Elf32_External_Rela);
2176 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2177 info->flags |= DF_TEXTREL;
2178 }
2179 }
2180 }
2181
2182 local_got = elf_local_got_refcounts (ibfd);
2183 if (!local_got)
2184 continue;
2185
2186 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2187 locsymcount = symtab_hdr->sh_info;
2188 end_local_got = local_got + locsymcount;
2189 s = htab->sgot;
2190 srel = htab->srelgot;
2191 for (; local_got < end_local_got; ++local_got)
2192 {
2193 if (*local_got > 0)
2194 {
2195 *local_got = s->size;
2196 s->size += 4;
2197 if (info->shared)
2198 srel->size += sizeof (Elf32_External_Rela);
2199 }
2200 else
2201 *local_got = (bfd_vma) -1;
2202 }
2203 }
2204
2205 /* Allocate global sym .plt and .got entries, and space for global
2206 sym dynamic relocs. */
2207 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2208
2209 /* We now have determined the sizes of the various dynamic sections.
2210 Allocate memory for them. */
2211 relocs = FALSE;
2212 for (s = dynobj->sections; s != NULL; s = s->next)
2213 {
2214 if ((s->flags & SEC_LINKER_CREATED) == 0)
2215 continue;
2216
2217 if (s == htab->splt
2218 || s == htab->sgot
2219 || s == htab->sgotplt
2220 || s == htab->sdynbss)
2221 {
2222 /* Strip this section if we don't need it; see the
2223 comment below. */
2224 }
2225 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2226 {
2227 if (s->size != 0 && s != htab->srelplt)
2228 relocs = TRUE;
2229
2230 /* We use the reloc_count field as a counter if we need
2231 to copy relocs into the output file. */
2232 s->reloc_count = 0;
2233 }
2234 else
2235 /* It's not one of our sections, so don't allocate space. */
2236 continue;
2237
2238 if (s->size == 0)
2239 {
2240 /* If we don't need this section, strip it from the
2241 output file. This is mostly to handle .rela.bss and
2242 .rela.plt. We must create both sections in
2243 create_dynamic_sections, because they must be created
2244 before the linker maps input sections to output
2245 sections. The linker does that before
2246 adjust_dynamic_symbol is called, and it is that
2247 function which decides whether anything needs to go
2248 into these sections. */
2249 s->flags |= SEC_EXCLUDE;
2250 continue;
2251 }
2252
2253 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2254 continue;
2255
2256 /* Allocate memory for the section contents. We use bfd_zalloc
2257 here in case unused entries are not reclaimed before the
2258 section's contents are written out. This should not happen,
2259 but this way if it does, we get a R_LM32_NONE reloc instead
2260 of garbage. */
2261 s->contents = bfd_zalloc (dynobj, s->size);
2262 if (s->contents == NULL)
2263 return FALSE;
2264 }
2265
2266 if (htab->root.dynamic_sections_created)
2267 {
2268 /* Add some entries to the .dynamic section. We fill in the
2269 values later, in lm32_elf_finish_dynamic_sections, but we
2270 must add the entries now so that we get the correct size for
2271 the .dynamic section. The DT_DEBUG entry is filled in by the
2272 dynamic linker and used by the debugger. */
2273#define add_dynamic_entry(TAG, VAL) \
2274 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2275
2276 if (info->executable)
2277 {
2278 if (! add_dynamic_entry (DT_DEBUG, 0))
2279 return FALSE;
2280 }
2281
2282 if (htab->splt->size != 0)
2283 {
2284 if (! add_dynamic_entry (DT_PLTGOT, 0)
2285 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2286 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2287 || ! add_dynamic_entry (DT_JMPREL, 0))
2288 return FALSE;
2289 }
2290
2291 if (relocs)
2292 {
2293 if (! add_dynamic_entry (DT_RELA, 0)
2294 || ! add_dynamic_entry (DT_RELASZ, 0)
2295 || ! add_dynamic_entry (DT_RELAENT,
2296 sizeof (Elf32_External_Rela)))
2297 return FALSE;
2298
2299 /* If any dynamic relocs apply to a read-only section,
2300 then we need a DT_TEXTREL entry. */
2301 if ((info->flags & DF_TEXTREL) == 0)
2302 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2303 info);
2304
2305 if ((info->flags & DF_TEXTREL) != 0)
2306 {
2307 if (! add_dynamic_entry (DT_TEXTREL, 0))
2308 return FALSE;
2309 }
2310 }
2311 }
2312#undef add_dynamic_entry
2313
2314 /* Allocate .rofixup section. */
2315 if (IS_FDPIC (output_bfd))
2316 {
2317 struct weak_symbol_list *list_start = NULL, *list_end = NULL;
2318 int rgot_weak_count = 0;
2319 int r32_count = 0;
2320 int rgot_count = 0;
2321 /* Look for deleted sections. */
2322 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2323 {
2324 for (s = ibfd->sections; s != NULL; s = s->next)
2325 {
2326 if (s->reloc_count)
2327 {
2328 /* Count relocs that need .rofixup entires. */
2329 Elf_Internal_Rela *internal_relocs, *end;
2330 internal_relocs = elf_section_data (s)->relocs;
2331 if (internal_relocs == NULL)
2332 internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE));
2333 if (internal_relocs != NULL)
2334 {
2335 end = internal_relocs + s->reloc_count;
2336 while (internal_relocs < end)
2337 {
2338 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2339 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
2340 unsigned long r_symndx;
2341 struct elf_link_hash_entry *h;
2342
2343 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2344 sym_hashes = elf_sym_hashes (ibfd);
2345 r_symndx = ELF32_R_SYM (internal_relocs->r_info);
2346 h = NULL;
2347 if (r_symndx < symtab_hdr->sh_info)
2348 {
2349 }
2350 else
2351 {
2352 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2353 while (h->root.type == bfd_link_hash_indirect
2354 || h->root.type == bfd_link_hash_warning)
2355 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2356 }
2357
2358 /* Don't generate entries for weak symbols. */
2359 if (!h || (h && h->root.type != bfd_link_hash_undefweak))
2360 {
dbaa2011 2361 if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0))
84e94c90
NC		 2362 {
2363 switch (ELF32_R_TYPE (internal_relocs->r_info))
2364 {
2365 case R_LM32_32:
2366 r32_count++;
2367 break;
2368 case R_LM32_16_GOT:
2369 rgot_count++;
2370 break;
2371 }
2372 }
2373 }
2374 else
2375 {
2376 struct weak_symbol_list *current, *new_entry;
2377 /* Is this symbol already in the list? */
2378 for (current = list_start; current; current = current->next)
2379 {
2380 if (!strcmp (current->name, h->root.root.string))
2381 break;
2382 }
dbaa2011 2383 if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC))
84e94c90
NC		 2384 {
2385 /* Will this have an entry in the GOT. */
2386 if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT)
2387 {
2388 /* Create a new entry. */
2389 new_entry = malloc (sizeof (struct weak_symbol_list));
2390 if (!new_entry)
2391 return FALSE;
2392 new_entry->name = h->root.root.string;
2393 new_entry->next = NULL;
2394 /* Add to list */
2395 if (list_start == NULL)
2396 {
2397 list_start = new_entry;
2398 list_end = new_entry;
2399 }
2400 else
2401 {
2402 list_end->next = new_entry;
2403 list_end = new_entry;
2404 }
2405 /* Increase count of undefined weak symbols in the got. */
2406 rgot_weak_count++;
2407 }
2408 }
2409 }
2410 internal_relocs++;
2411 }
2412 }
2413 else
2414 return FALSE;
2415 }
2416 }
2417 }
2418 /* Free list. */
2419 while (list_start)
2420 {
2421 list_end = list_start->next;
2422 free (list_start);
2423 list_start = list_end;
2424 }
2425
2426 /* Size sections. */
2427 lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4;
2428 if (lm32fdpic_fixup32_section (info)->size == 0)
2429 lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE;
2430 else
2431 {
2432 lm32fdpic_fixup32_section (info)->contents =
2433 bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size);
2434 if (lm32fdpic_fixup32_section (info)->contents == NULL)
2435 return FALSE;
2436 }
2437 }
2438
2439 return TRUE;
2440}
2441
2442/* Create dynamic sections when linking against a dynamic object. */
2443
2444static bfd_boolean
2445lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2446{
2447 struct elf_lm32_link_hash_table *htab;
2448 flagword flags, pltflags;
2449 asection *s;
2450 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2451 int ptralign = 2; /* 32bit */
2452
2453 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2454 if (htab == NULL)
2455 return FALSE;
84e94c90
NC		 2456
2457 /* Make sure we have a GOT - For the case where we have a dynamic object
2458 but none of the relocs in check_relocs */
2459 if (! create_got_section (abfd, info))
2460 return FALSE;
2461 if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL))
2462 {
2463 if (! create_rofixup_section (abfd, info))
2464 return FALSE;
2465 }
2466
2467 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2468 .rel[a].bss sections. */
2469 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2470 | SEC_LINKER_CREATED);
2471
2472 pltflags = flags;
2473 pltflags |= SEC_CODE;
2474 if (bed->plt_not_loaded)
2475 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2476 if (bed->plt_readonly)
2477 pltflags |= SEC_READONLY;
2478
3d4d4302 2479 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
84e94c90
NC		 2480 htab->splt = s;
2481 if (s == NULL
2482 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2483 return FALSE;
2484
2485 if (bed->want_plt_sym)
2486 {
2487 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2488 .plt section. */
2489 struct bfd_link_hash_entry *bh = NULL;
2490 struct elf_link_hash_entry *h;
2491
2492 if (! (_bfd_generic_link_add_one_symbol
2493 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2494 (bfd_vma) 0, NULL, FALSE,
2495 get_elf_backend_data (abfd)->collect, &bh)))
2496 return FALSE;
2497 h = (struct elf_link_hash_entry *) bh;
2498 h->def_regular = 1;
2499 h->type = STT_OBJECT;
2500 htab->root.hplt = h;
2501
2502 if (info->shared
2503 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2504 return FALSE;
2505 }
2506
3d4d4302
AM		 2507 s = bfd_make_section_anyway_with_flags (abfd,
2508 bed->default_use_rela_p
2509 ? ".rela.plt" : ".rel.plt",
2510 flags | SEC_READONLY);
84e94c90
NC		 2511 htab->srelplt = s;
2512 if (s == NULL
2513 || ! bfd_set_section_alignment (abfd, s, ptralign))
2514 return FALSE;
2515
2516 if (htab->sgot == NULL
2517 && ! create_got_section (abfd, info))
2518 return FALSE;
2519
84e94c90
NC		 2520 if (bed->want_dynbss)
2521 {
2522 /* The .dynbss section is a place to put symbols which are defined
2523 by dynamic objects, are referenced by regular objects, and are
2524 not functions. We must allocate space for them in the process
2525 image and use a R_*_COPY reloc to tell the dynamic linker to
2526 initialize them at run time. The linker script puts the .dynbss
2527 section into the .bss section of the final image. */
3d4d4302
AM		 2528 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2529 SEC_ALLOC | SEC_LINKER_CREATED);
84e94c90
NC		 2530 htab->sdynbss = s;
2531 if (s == NULL)
2532 return FALSE;
2533 /* The .rel[a].bss section holds copy relocs. This section is not
2534 normally needed. We need to create it here, though, so that the
2535 linker will map it to an output section. We can't just create it
2536 only if we need it, because we will not know whether we need it
2537 until we have seen all the input files, and the first time the
2538 main linker code calls BFD after examining all the input files
2539 (size_dynamic_sections) the input sections have already been
2540 mapped to the output sections. If the section turns out not to
2541 be needed, we can discard it later. We will never need this
2542 section when generating a shared object, since they do not use
2543 copy relocs. */
2544 if (! info->shared)
2545 {
3d4d4302
AM		 2546 s = bfd_make_section_anyway_with_flags (abfd,
2547 (bed->default_use_rela_p
2548 ? ".rela.bss" : ".rel.bss"),
2549 flags | SEC_READONLY);
84e94c90
NC		 2550 htab->srelbss = s;
2551 if (s == NULL
2552 || ! bfd_set_section_alignment (abfd, s, ptralign))
2553 return FALSE;
2554 }
2555 }
2556
2557 return TRUE;
2558}
2559
2560/* Copy the extra info we tack onto an elf_link_hash_entry. */
2561
2562static void
2563lm32_elf_copy_indirect_symbol (struct bfd_link_info *info,
2564 struct elf_link_hash_entry *dir,
2565 struct elf_link_hash_entry *ind)
2566{
2567 struct elf_lm32_link_hash_entry * edir;
2568 struct elf_lm32_link_hash_entry * eind;
2569
2570 edir = (struct elf_lm32_link_hash_entry *) dir;
2571 eind = (struct elf_lm32_link_hash_entry *) ind;
2572
2573 if (eind->dyn_relocs != NULL)
2574 {
2575 if (edir->dyn_relocs != NULL)
2576 {
2577 struct elf_lm32_dyn_relocs **pp;
2578 struct elf_lm32_dyn_relocs *p;
2579
2580 /* Add reloc counts against the indirect sym to the direct sym
2581 list. Merge any entries against the same section. */
2582 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2583 {
2584 struct elf_lm32_dyn_relocs *q;
2585
2586 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2587 if (q->sec == p->sec)
2588 {
2589 q->pc_count += p->pc_count;
2590 q->count += p->count;
2591 *pp = p->next;
2592 break;
2593 }
2594 if (q == NULL)
2595 pp = &p->next;
2596 }
2597 *pp = edir->dyn_relocs;
2598 }
2599
2600 edir->dyn_relocs = eind->dyn_relocs;
2601 eind->dyn_relocs = NULL;
2602 }
2603
2604 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2605}
2606
2607static bfd_boolean
04c3a755 2608lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
84e94c90
NC		 2609{
2610 if (!info->relocatable)
2611 {
04c3a755
NS		 2612 if (!bfd_elf_stack_segment_size (output_bfd, info,
2613 "__stacksize", DEFAULT_STACK_SIZE))
2614 return FALSE;
84e94c90 2615
84e94c90 2616 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
84e94c90 2617 if (sec)
04c3a755 2618 sec->size = info->stacksize >= 0 ? info->stacksize : 0;
84e94c90
NC		 2619 }
2620
2621 return TRUE;
2622}
2623
84e94c90
NC		 2624static bfd_boolean
2625lm32_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2626{
2627 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2628 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2629 return TRUE;
2630
2631 BFD_ASSERT (!elf_flags_init (obfd)
2632 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
2633
2634 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
2635 elf_flags_init (obfd) = TRUE;
2636
2637 /* Copy object attributes. */
2638 _bfd_elf_copy_obj_attributes (ibfd, obfd);
2639
2640 return TRUE;
2641}
2642
2643
2644static bfd_boolean
2645lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2646{
2647 unsigned i;
2648
2649 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2650 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2651 return TRUE;
2652
2653 if (! lm32_elf_copy_private_bfd_data (ibfd, obfd))
2654 return FALSE;
2655
2656 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
2657 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
2658 return TRUE;
2659
2660 /* Copy the stack size. */
2661 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
2662 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
2663 {
2664 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
2665
2666 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
2667 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
2668 {
2669 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
2670
2671 /* Rewrite the phdrs, since we're only called after they were first written. */
2672 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
2673 ->s->sizeof_ehdr, SEEK_SET) != 0
2674 || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
2675 elf_elfheader (obfd)->e_phnum) != 0)
2676 return FALSE;
2677 break;
2678 }
2679
2680 break;
2681 }
2682
2683 return TRUE;
2684}
2685
2686
2687#define ELF_ARCH bfd_arch_lm32
ae95ffa6 2688#define ELF_TARGET_ID LM32_ELF_DATA
84e94c90
NC		 2689#define ELF_MACHINE_CODE EM_LATTICEMICO32
2690#define ELF_MAXPAGESIZE 0x1000
2691
2692#define TARGET_BIG_SYM bfd_elf32_lm32_vec
2693#define TARGET_BIG_NAME "elf32-lm32"
2694
2695#define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2696#define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2697#define elf_info_to_howto lm32_info_to_howto_rela
2698#define elf_info_to_howto_rel 0
2699#define elf_backend_rela_normal 1
2700#define elf_backend_object_p lm32_elf_object_p
2701#define elf_backend_final_write_processing lm32_elf_final_write_processing
04c3a755 2702#define elf_backend_stack_align 8
84e94c90
NC		 2703#define elf_backend_can_gc_sections 1
2704#define elf_backend_can_refcount 1
2705#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2706#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2707#define elf_backend_plt_readonly 1
2708#define elf_backend_want_got_plt 1
2709#define elf_backend_want_plt_sym 0
2710#define elf_backend_got_header_size 12
2711#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2712#define elf_backend_check_relocs lm32_elf_check_relocs
2713#define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2714#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2715#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2716#define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2717#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2718#define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2719#define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2720#define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2721#define elf_backend_relocate_section lm32_elf_relocate_section
2722
2723#include "elf32-target.h"
2724
2725#undef ELF_MAXPAGESIZE
2726#define ELF_MAXPAGESIZE 0x4000
2727
2728
2729#undef TARGET_BIG_SYM
2730#define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec
2731#undef TARGET_BIG_NAME
2732#define TARGET_BIG_NAME "elf32-lm32fdpic"
2733#undef elf32_bed
2734#define elf32_bed elf32_lm32fdpic_bed
2735
2736#undef elf_backend_always_size_sections
2737#define elf_backend_always_size_sections lm32_elf_always_size_sections
84e94c90
NC		 2738#undef bfd_elf32_bfd_copy_private_bfd_data
2739#define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2740
2741#include "elf32-target.h"
GDB Binutils - Deliverables
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