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Better ld --fatal-warnings support
[thirdparty/binutils-gdb.git] / bfd / elf32-lm32.c
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84e94c90 1/* Lattice Mico32-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 2008-2016 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
6d00b590 46extern const bfd_target lm32_elf32_fdpic_vec;
84e94c90 47
6d00b590 48#define IS_FDPIC(bfd) ((bfd)->xvec == &lm32_elf32_fdpic_vec)
84e94c90
NC		 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 */
6346d5ca
AM		 265 3, /* size (0 = byte, 1 = short, 2 = long) */
266 0, /* bitsize */
84e94c90
NC		 267 FALSE, /* pc_relative */
268 0, /* bitpos */
6346d5ca 269 complain_overflow_dont, /* complain_on_overflow */
84e94c90
NC		 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);
5860e3f8
NC		 591 if (r_type >= (unsigned int) R_LM32_max)
592 {
64d29018 593 _bfd_error_handler (_("%B: invalid LM32 reloc number: %d"), abfd, r_type);
5860e3f8
NC		 594 r_type = 0;
595 }
84e94c90
NC		 596 cache_ptr->howto = &lm32_elf_howto_table[r_type];
597}
598
599/* Set the right machine number for an Lattice Mico32 ELF file. */
600
601static bfd_boolean
602lm32_elf_object_p (bfd *abfd)
603{
604 return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32);
605}
606
607/* Set machine type flags just before file is written out. */
608
609static void
610lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
611{
612 elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32;
613 elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH;
614 switch (bfd_get_mach (abfd))
615 {
616 case bfd_mach_lm32:
617 elf_elfheader (abfd)->e_flags |= E_LM32_MACH;
618 break;
619 default:
620 abort ();
621 }
622}
623
624/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
625 dangerous relocation. */
626
627static bfd_boolean
628lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
629{
630 unsigned int count;
631 asymbol **sym;
632 unsigned int i;
633
634 /* If we've already figured out what GP will be, just return it. */
635 *pgp = _bfd_get_gp_value (output_bfd);
636 if (*pgp)
637 return TRUE;
638
639 count = bfd_get_symcount (output_bfd);
640 sym = bfd_get_outsymbols (output_bfd);
641
642 /* The linker script will have created a symbol named `_gp' with the
643 appropriate value. */
644 if (sym == NULL)
645 i = count;
646 else
647 {
648 for (i = 0; i < count; i++, sym++)
649 {
650 const char *name;
651
652 name = bfd_asymbol_name (*sym);
653 if (*name == '_' && strcmp (name, "_gp") == 0)
654 {
655 *pgp = bfd_asymbol_value (*sym);
656 _bfd_set_gp_value (output_bfd, *pgp);
657 break;
658 }
659 }
660 }
661
662 if (i >= count)
663 {
664 /* Only get the error once. */
665 *pgp = 4;
666 _bfd_set_gp_value (output_bfd, *pgp);
667 return FALSE;
668 }
669
670 return TRUE;
671}
672
673/* We have to figure out the gp value, so that we can adjust the
674 symbol value correctly. We look up the symbol _gp in the output
675 BFD. If we can't find it, we're stuck. We cache it in the ELF
676 target data. We don't need to adjust the symbol value for an
677 external symbol if we are producing relocatable output. */
678
679static bfd_reloc_status_type
680lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
681 char **error_message, bfd_vma *pgp)
682{
683 if (bfd_is_und_section (symbol->section) && !relocatable)
684 {
685 *pgp = 0;
686 return bfd_reloc_undefined;
687 }
688
689 *pgp = _bfd_get_gp_value (output_bfd);
690 if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0))
691 {
692 if (relocatable)
693 {
694 /* Make up a value. */
695 *pgp = symbol->section->output_section->vma + 0x4000;
696 _bfd_set_gp_value (output_bfd, *pgp);
697 }
698 else if (!lm32_elf_assign_gp (output_bfd, pgp))
699 {
700 *error_message =
701 (char *)
702 _("global pointer relative relocation when _gp not defined");
703 return bfd_reloc_dangerous;
704 }
705 }
706
707 return bfd_reloc_ok;
708}
709
710static bfd_reloc_status_type
711lm32_elf_do_gprel_relocate (bfd *abfd,
712 reloc_howto_type *howto,
713 asection *input_section ATTRIBUTE_UNUSED,
714 bfd_byte *data,
715 bfd_vma offset,
716 bfd_vma symbol_value,
717 bfd_vma addend)
718{
719 return _bfd_final_link_relocate (howto, abfd, input_section,
720 data, offset, symbol_value, addend);
721}
722
723static bfd_reloc_status_type
724lm32_elf_gprel_reloc (bfd *abfd,
725 arelent *reloc_entry,
726 asymbol *symbol,
727 void *data,
728 asection *input_section,
729 bfd *output_bfd,
730 char **msg)
731{
732 bfd_vma relocation;
733 bfd_vma gp;
734 bfd_reloc_status_type r;
735
736 if (output_bfd != (bfd *) NULL
737 && (symbol->flags & BSF_SECTION_SYM) == 0
738 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
739 {
740 reloc_entry->address += input_section->output_offset;
741 return bfd_reloc_ok;
742 }
743
744 if (output_bfd != NULL)
745 return bfd_reloc_ok;
746
747 relocation = symbol->value
748 + symbol->section->output_section->vma + symbol->section->output_offset;
749
750 if ((r =
751 lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok)
752 {
753 relocation = relocation + reloc_entry->addend - gp;
754 reloc_entry->addend = 0;
755 if ((signed) relocation < -32768 || (signed) relocation > 32767)
756 {
757 *msg = _("global pointer relative address out of range");
758 r = bfd_reloc_outofrange;
759 }
760 else
761 {
762 r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto,
763 input_section,
764 data, reloc_entry->address,
765 relocation, reloc_entry->addend);
766 }
767 }
768
769 return r;
770}
771
772/* Find the segment number in which OSEC, and output section, is
773 located. */
774
775static unsigned
776_lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec)
777{
778 struct elf_segment_map *m;
779 Elf_Internal_Phdr *p;
780
781 /* Find the segment that contains the output_section. */
12bd6957 782 for (m = elf_seg_map (output_bfd), p = elf_tdata (output_bfd)->phdr;
84e94c90
NC		 783 m != NULL;
784 m = m->next, p++)
785 {
786 int i;
787
788 for (i = m->count - 1; i >= 0; i--)
789 if (m->sections[i] == osec)
790 break;
791
792 if (i >= 0)
793 break;
794 }
795
796 return p - elf_tdata (output_bfd)->phdr;
797}
798
799/* Determine if an output section is read-only. */
800
801inline static bfd_boolean
802_lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
803{
804 unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec);
805
806 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
807}
808
809/* Relocate a section */
810
811static bfd_boolean
812lm32_elf_relocate_section (bfd *output_bfd,
813 struct bfd_link_info *info,
814 bfd *input_bfd,
815 asection *input_section,
816 bfd_byte *contents,
817 Elf_Internal_Rela *relocs,
818 Elf_Internal_Sym *local_syms,
819 asection **local_sections)
820{
821 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
822 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
823 Elf_Internal_Rela *rel, *relend;
84e94c90
NC		 824 struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info);
825 bfd *dynobj;
826 bfd_vma *local_got_offsets;
c7e2358a 827 asection *sgot;
84e94c90 828
4dfe6ac6
NC		 829 if (htab == NULL)
830 return FALSE;
831
84e94c90
NC		 832 dynobj = htab->root.dynobj;
833 local_got_offsets = elf_local_got_offsets (input_bfd);
834
835 sgot = htab->sgot;
84e94c90
NC		 836
837 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
838 sym_hashes = elf_sym_hashes (input_bfd);
839
840 rel = relocs;
841 relend = relocs + input_section->reloc_count;
842 for (; rel < relend; rel++)
843 {
844 reloc_howto_type *howto;
845 unsigned int r_type;
846 unsigned long r_symndx;
847 Elf_Internal_Sym *sym;
848 asection *sec;
849 struct elf_link_hash_entry *h;
850 bfd_vma relocation;
851 bfd_vma gp;
852 bfd_reloc_status_type r;
853 const char *name = NULL;
84e94c90
NC		 854
855 r_symndx = ELF32_R_SYM (rel->r_info);
856 r_type = ELF32_R_TYPE (rel->r_info);
857
858 if (r_type == R_LM32_GNU_VTENTRY
859 || r_type == R_LM32_GNU_VTINHERIT )
860 continue;
861
862 h = NULL;
863 sym = NULL;
864 sec = NULL;
865
866 howto = lm32_elf_howto_table + r_type;
867
868 if (r_symndx < symtab_hdr->sh_info)
869 {
870 /* It's a local symbol. */
871 sym = local_syms + r_symndx;
c7e2358a 872 sec = local_sections[r_symndx];
84e94c90
NC		 873 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
874 name = bfd_elf_string_from_elf_section
875 (input_bfd, symtab_hdr->sh_link, sym->st_name);
876 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
877 }
878 else
879 {
880 /* It's a global symbol. */
881 bfd_boolean unresolved_reloc;
62d887d4 882 bfd_boolean warned, ignored;
84e94c90
NC		 883
884 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
885 r_symndx, symtab_hdr, sym_hashes,
886 h, sec, relocation,
62d887d4 887 unresolved_reloc, warned, ignored);
84e94c90
NC		 888 name = h->root.root.string;
889 }
890
dbaa2011 891 if (sec != NULL && discarded_section (sec))
e4067dbb 892 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 893 rel, 1, relend, howto, 0, contents);
84e94c90 894
0e1862bb 895 if (bfd_link_relocatable (info))
84e94c90
NC		 896 {
897 /* This is a relocatable link. We don't have to change
898 anything, unless the reloc is against a section symbol,
899 in which case we have to adjust according to where the
900 section symbol winds up in the output section. */
901 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
902 continue;
903
904 /* If partial_inplace, we need to store any additional addend
905 back in the section. */
906 if (! howto->partial_inplace)
907 continue;
908
909 /* Shouldn't reach here. */
910 abort ();
911 r = bfd_reloc_ok;
912 }
913 else
914 {
915 switch (howto->type)
916 {
917 case R_LM32_GPREL16:
918 if (!lm32_elf_assign_gp (output_bfd, &gp))
919 r = bfd_reloc_dangerous;
920 else
921 {
922 relocation = relocation + rel->r_addend - gp;
923 rel->r_addend = 0;
924 if ((signed)relocation < -32768 || (signed)relocation > 32767)
925 r = bfd_reloc_outofrange;
926 else
927 {
928 r = _bfd_final_link_relocate (howto, input_bfd,
929 input_section, contents,
930 rel->r_offset, relocation,
931 rel->r_addend);
932 }
933 }
934 break;
935 case R_LM32_16_GOT:
936 /* Relocation is to the entry for this symbol in the global
937 offset table. */
938 BFD_ASSERT (sgot != NULL);
939 if (h != NULL)
940 {
941 bfd_boolean dyn;
942 bfd_vma off;
943
944 off = h->got.offset;
945 BFD_ASSERT (off != (bfd_vma) -1);
946
947 dyn = htab->root.dynamic_sections_created;
0e1862bb
L		 948 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
949 bfd_link_pic (info),
950 h)
951 || (bfd_link_pic (info)
84e94c90
NC		 952 && (info->symbolic
953 || h->dynindx == -1
954 || h->forced_local)
955 && h->def_regular))
956 {
957 /* This is actually a static link, or it is a
958 -Bsymbolic link and the symbol is defined
959 locally, or the symbol was forced to be local
960 because of a version file. We must initialize
961 this entry in the global offset table. Since the
962 offset must always be a multiple of 4, we use the
963 least significant bit to record whether we have
964 initialized it already.
965
966 When doing a dynamic link, we create a .rela.got
967 relocation entry to initialize the value. This
968 is done in the finish_dynamic_symbol routine. */
969 if ((off & 1) != 0)
970 off &= ~1;
971 else
972 {
973 /* Write entry in GOT */
974 bfd_put_32 (output_bfd, relocation,
975 sgot->contents + off);
976 /* Create entry in .rofixup pointing to GOT entry. */
977 if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak)
978 {
979 _lm32fdpic_add_rofixup (output_bfd,
980 lm32fdpic_fixup32_section
981 (info),
982 sgot->output_section->vma
983 + sgot->output_offset
984 + off);
985 }
986 /* Mark GOT entry as having been written. */
987 h->got.offset |= 1;
988 }
989 }
990
991 relocation = sgot->output_offset + off;
992 }
993 else
994 {
995 bfd_vma off;
996 bfd_byte *loc;
997
998 BFD_ASSERT (local_got_offsets != NULL
999 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1000
1001 /* Get offset into GOT table. */
1002 off = local_got_offsets[r_symndx];
1003
1004 /* The offset must always be a multiple of 4. We use
1005 the least significant bit to record whether we have
1006 already processed this entry. */
1007 if ((off & 1) != 0)
1008 off &= ~1;
1009 else
1010 {
1011 /* Write entry in GOT. */
1012 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1013 /* Create entry in .rofixup pointing to GOT entry. */
1014 if (IS_FDPIC (output_bfd))
1015 {
1016 _lm32fdpic_add_rofixup (output_bfd,
1017 lm32fdpic_fixup32_section
1018 (info),
1019 sgot->output_section->vma
1020 + sgot->output_offset
1021 + off);
1022 }
1023
0e1862bb 1024 if (bfd_link_pic (info))
84e94c90
NC		 1025 {
1026 asection *srelgot;
1027 Elf_Internal_Rela outrel;
1028
1029 /* We need to generate a R_LM32_RELATIVE reloc
1030 for the dynamic linker. */
3d4d4302
AM		 1031 srelgot = bfd_get_linker_section (dynobj,
1032 ".rela.got");
84e94c90
NC		 1033 BFD_ASSERT (srelgot != NULL);
1034
1035 outrel.r_offset = (sgot->output_section->vma
1036 + sgot->output_offset
1037 + off);
1038 outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
1039 outrel.r_addend = relocation;
1040 loc = srelgot->contents;
1041 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
1042 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1043 ++srelgot->reloc_count;
1044 }
1045
1046 local_got_offsets[r_symndx] |= 1;
1047 }
1048
1049
1050 relocation = sgot->output_offset + off;
1051 }
1052
1053 /* Addend should be zero. */
1054 if (rel->r_addend != 0)
1055 (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT"));
1056
1057 r = _bfd_final_link_relocate (howto,
1058 input_bfd,
1059 input_section,
1060 contents,
1061 rel->r_offset,
1062 relocation,
1063 rel->r_addend);
1064 break;
1065
1066 case R_LM32_GOTOFF_LO16:
1067 case R_LM32_GOTOFF_HI16:
1068 /* Relocation is offset from GOT. */
1069 BFD_ASSERT (sgot != NULL);
1070 relocation -= sgot->output_section->vma;
1071 /* Account for sign-extension. */
1072 if ((r_type == R_LM32_GOTOFF_HI16)
1073 && ((relocation + rel->r_addend) & 0x8000))
1074 rel->r_addend += 0x10000;
1075 r = _bfd_final_link_relocate (howto,
1076 input_bfd,
1077 input_section,
1078 contents,
1079 rel->r_offset,
1080 relocation,
1081 rel->r_addend);
1082 break;
1083
1084 case R_LM32_32:
1085 if (IS_FDPIC (output_bfd))
1086 {
1087 if ((!h) || (h && h->root.type != bfd_link_hash_undefweak))
1088 {
1089 /* Only create .rofixup entries for relocs in loadable sections. */
1090 if ((bfd_get_section_flags (output_bfd, input_section->output_section)
1091 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
1092
1093 {
1094 /* Check address to be modified is writable. */
1095 if (_lm32fdpic_osec_readonly_p (output_bfd,
1096 input_section
1097 ->output_section))
1098 {
1099 info->callbacks->warning
1100 (info,
1101 _("cannot emit dynamic relocations in read-only section"),
1102 name, input_bfd, input_section, rel->r_offset);
1103 return FALSE;
1104 }
1105 /* Create entry in .rofixup section. */
1106 _lm32fdpic_add_rofixup (output_bfd,
1107 lm32fdpic_fixup32_section (info),
1108 input_section->output_section->vma
1109 + input_section->output_offset
1110 + rel->r_offset);
1111 }
1112 }
1113 }
1114 /* Fall through. */
1115
1116 default:
1117 r = _bfd_final_link_relocate (howto,
1118 input_bfd,
1119 input_section,
1120 contents,
1121 rel->r_offset,
1122 relocation,
1123 rel->r_addend);
1124 break;
1125 }
1126 }
1127
1128 if (r != bfd_reloc_ok)
1129 {
84e94c90
NC		 1130 const char *msg = NULL;
1131 arelent bfd_reloc;
84e94c90
NC		 1132
1133 lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel);
1134 howto = bfd_reloc.howto;
1135
1136 if (h != NULL)
1137 name = h->root.root.string;
1138 else
1139 {
1140 name = (bfd_elf_string_from_elf_section
1141 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1142 if (name == NULL || *name == '\0')
1143 name = bfd_section_name (input_bfd, sec);
1144 }
1145
1146 switch (r)
1147 {
1148 case bfd_reloc_overflow:
1149 if ((h != NULL)
1150 && (h->root.type == bfd_link_hash_undefweak))
1151 break;
1a72702b
AM		 1152 (*info->callbacks->reloc_overflow)
1153 (info, (h ? &h->root : NULL), name, howto->name,
1154 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
84e94c90
NC		 1155 break;
1156
1157 case bfd_reloc_undefined:
1a72702b
AM		 1158 (*info->callbacks->undefined_symbol)
1159 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
84e94c90
NC		 1160 break;
1161
1162 case bfd_reloc_outofrange:
1163 msg = _("internal error: out of range error");
1164 goto common_error;
1165
1166 case bfd_reloc_notsupported:
1167 msg = _("internal error: unsupported relocation error");
1168 goto common_error;
1169
1170 case bfd_reloc_dangerous:
1171 msg = _("internal error: dangerous error");
1172 goto common_error;
1173
1174 default:
1175 msg = _("internal error: unknown error");
1176 /* fall through */
1177
1178 common_error:
1a72702b
AM		 1179 (*info->callbacks->warning) (info, msg, name, input_bfd,
1180 input_section, rel->r_offset);
84e94c90
NC		 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 1276
0e1862bb 1277 if (bfd_link_relocatable (info))
84e94c90
NC		 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;
81fbe831
AM		 1309
1310 /* PR15323, ref flags aren't set for references in the same
1311 object. */
1312 h->root.non_ir_ref = 1;
84e94c90
NC		 1313 }
1314
1315 /* Some relocs require a global offset table. */
1316 if (htab->sgot == NULL)
1317 {
1318 switch (r_type)
1319 {
1320 case R_LM32_16_GOT:
1321 case R_LM32_GOTOFF_HI16:
1322 case R_LM32_GOTOFF_LO16:
1323 if (dynobj == NULL)
1324 htab->root.dynobj = dynobj = abfd;
1325 if (! create_got_section (dynobj, info))
1326 return FALSE;
1327 break;
1328 }
1329 }
1330
1331 /* Some relocs require a rofixup table. */
1332 if (IS_FDPIC (abfd))
1333 {
1334 switch (r_type)
1335 {
1336 case R_LM32_32:
1337 /* FDPIC requires a GOT if there is a .rofixup section
1338 (Normal ELF doesn't). */
1339 if (dynobj == NULL)
1340 htab->root.dynobj = dynobj = abfd;
1341 if (! create_got_section (dynobj, info))
1342 return FALSE;
1343 /* Create .rofixup section */
1344 if (htab->sfixup32 == NULL)
1345 {
3d4d4302 1346 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1347 return FALSE;
1348 }
1349 break;
1350 case R_LM32_16_GOT:
1351 case R_LM32_GOTOFF_HI16:
1352 case R_LM32_GOTOFF_LO16:
1353 /* Create .rofixup section. */
1354 if (htab->sfixup32 == NULL)
1355 {
3d4d4302
AM		 1356 if (dynobj == NULL)
1357 htab->root.dynobj = dynobj = abfd;
1358 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1359 return FALSE;
1360 }
1361 break;
1362 }
1363 }
1364
1365 switch (r_type)
1366 {
1367 case R_LM32_16_GOT:
1368 if (h != NULL)
1369 h->got.refcount += 1;
1370 else
1371 {
1372 bfd_signed_vma *local_got_refcounts;
1373
1374 /* This is a global offset table entry for a local symbol. */
1375 local_got_refcounts = elf_local_got_refcounts (abfd);
1376 if (local_got_refcounts == NULL)
1377 {
1378 bfd_size_type size;
1379
1380 size = symtab_hdr->sh_info;
1381 size *= sizeof (bfd_signed_vma);
1382 local_got_refcounts = bfd_zalloc (abfd, size);
1383 if (local_got_refcounts == NULL)
1384 return FALSE;
1385 elf_local_got_refcounts (abfd) = local_got_refcounts;
1386 }
1387 local_got_refcounts[r_symndx] += 1;
1388 }
1389 break;
1390
1391 /* This relocation describes the C++ object vtable hierarchy.
1392 Reconstruct it for later use during GC. */
1393 case R_LM32_GNU_VTINHERIT:
1394 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1395 return FALSE;
1396 break;
1397
1398 /* This relocation describes which C++ vtable entries are actually
1399 used. Record for later use during GC. */
1400 case R_LM32_GNU_VTENTRY:
1401 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1402 return FALSE;
1403 break;
1404
1405 }
1406 }
1407
1408 return TRUE;
1409}
1410
1411/* Finish up the dynamic sections. */
1412
1413static bfd_boolean
1414lm32_elf_finish_dynamic_sections (bfd *output_bfd,
1415 struct bfd_link_info *info)
1416{
1417 struct elf_lm32_link_hash_table *htab;
1418 bfd *dynobj;
1419 asection *sdyn;
1420 asection *sgot;
1421
1422 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1423 if (htab == NULL)
1424 return FALSE;
1425
84e94c90
NC		 1426 dynobj = htab->root.dynobj;
1427
1428 sgot = htab->sgotplt;
3d4d4302 1429 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
84e94c90
NC		 1430
1431 if (htab->root.dynamic_sections_created)
1432 {
1433 asection *splt;
1434 Elf32_External_Dyn *dyncon, *dynconend;
1435
1436 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1437
1438 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1439 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1440
1441 for (; dyncon < dynconend; dyncon++)
1442 {
1443 Elf_Internal_Dyn dyn;
84e94c90
NC		 1444 asection *s;
1445
1446 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1447
1448 switch (dyn.d_tag)
1449 {
1450 default:
1451 break;
1452
1453 case DT_PLTGOT:
4ade44b7 1454 s = htab->sgotplt;
84e94c90
NC		 1455 goto get_vma;
1456 case DT_JMPREL:
4ade44b7 1457 s = htab->srelplt;
84e94c90 1458 get_vma:
4ade44b7 1459 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
84e94c90
NC		 1460 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1461 break;
1462
1463 case DT_PLTRELSZ:
4ade44b7 1464 s = htab->srelplt;
84e94c90
NC		 1465 dyn.d_un.d_val = s->size;
1466 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1467 break;
1468
1469 case DT_RELASZ:
1470 /* My reading of the SVR4 ABI indicates that the
1471 procedure linkage table relocs (DT_JMPREL) should be
1472 included in the overall relocs (DT_RELA). This is
1473 what Solaris does. However, UnixWare can not handle
1474 that case. Therefore, we override the DT_RELASZ entry
1475 here to make it not include the JMPREL relocs. Since
1476 the linker script arranges for .rela.plt to follow all
1477 other relocation sections, we don't have to worry
1478 about changing the DT_RELA entry. */
1479 if (htab->srelplt != NULL)
1480 {
4ade44b7 1481 s = htab->srelplt;
84e94c90
NC		 1482 dyn.d_un.d_val -= s->size;
1483 }
1484 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1485 break;
1486 }
1487 }
1488
1489 /* Fill in the first entry in the procedure linkage table. */
1490 splt = htab->splt;
1491 if (splt && splt->size > 0)
1492 {
0e1862bb 1493 if (bfd_link_pic (info))
84e94c90
NC		 1494 {
1495 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
1496 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
1497 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
1498 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
1499 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
1500 }
1501 else
1502 {
1503 unsigned long addr;
1504 /* addr = .got + 4 */
1505 addr = sgot->output_section->vma + sgot->output_offset + 4;
1506 bfd_put_32 (output_bfd,
1507 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1508 splt->contents);
1509 bfd_put_32 (output_bfd,
1510 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1511 splt->contents + 4);
1512 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1513 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1514 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1515 }
1516
1517 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
1518 PLT_ENTRY_SIZE;
1519 }
1520 }
1521
1522 /* Fill in the first three entries in the global offset table. */
1523 if (sgot && sgot->size > 0)
1524 {
1525 if (sdyn == NULL)
1526 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1527 else
1528 bfd_put_32 (output_bfd,
1529 sdyn->output_section->vma + sdyn->output_offset,
1530 sgot->contents);
1531 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1532 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1533
1534 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1535 if (elf_section_data (sgot->output_section) != NULL)
1536 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1537 }
1538
1539 if (lm32fdpic_fixup32_section (info))
1540 {
1541 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
1542 bfd_vma got_value = hgot->root.u.def.value
1543 + hgot->root.u.def.section->output_section->vma
1544 + hgot->root.u.def.section->output_offset;
1545 struct bfd_link_hash_entry *hend;
1546
1547 /* Last entry is pointer to GOT. */
1548 _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value);
1549
1550 /* Check we wrote enough entries. */
1551 if (lm32fdpic_fixup32_section (info)->size
1552 != (lm32fdpic_fixup32_section (info)->reloc_count * 4))
1553 {
1554 (*_bfd_error_handler)
1555 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1556 lm32fdpic_fixup32_section (info)->size/4,
1557 lm32fdpic_fixup32_section (info)->reloc_count);
1558 return FALSE;
1559 }
1560
1561 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__",
1562 FALSE, FALSE, TRUE);
1563 if (hend
1564 && (hend->type == bfd_link_hash_defined
1565 || hend->type == bfd_link_hash_defweak))
1566 {
1567 bfd_vma value =
1568 lm32fdpic_fixup32_section (info)->output_section->vma
1569 + lm32fdpic_fixup32_section (info)->output_offset
1570 + lm32fdpic_fixup32_section (info)->size
1571 - hend->u.def.section->output_section->vma
1572 - hend->u.def.section->output_offset;
1573 BFD_ASSERT (hend->u.def.value == value);
1574 if (hend->u.def.value != value)
1575 {
1576 (*_bfd_error_handler)
1577 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value);
1578 return FALSE;
1579 }
1580 }
1581 }
1582
1583 return TRUE;
1584}
1585
1586/* Finish up dynamic symbol handling. We set the contents of various
1587 dynamic sections here. */
1588
1589static bfd_boolean
1590lm32_elf_finish_dynamic_symbol (bfd *output_bfd,
1591 struct bfd_link_info *info,
1592 struct elf_link_hash_entry *h,
1593 Elf_Internal_Sym *sym)
1594{
1595 struct elf_lm32_link_hash_table *htab;
84e94c90
NC		 1596 bfd_byte *loc;
1597
1598 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1599 if (htab == NULL)
1600 return FALSE;
1601
84e94c90
NC		 1602 if (h->plt.offset != (bfd_vma) -1)
1603 {
1604 asection *splt;
1605 asection *sgot;
1606 asection *srela;
1607
1608 bfd_vma plt_index;
1609 bfd_vma got_offset;
1610 Elf_Internal_Rela rela;
1611
1612 /* This symbol has an entry in the procedure linkage table. Set
1613 it up. */
1614 BFD_ASSERT (h->dynindx != -1);
1615
1616 splt = htab->splt;
1617 sgot = htab->sgotplt;
1618 srela = htab->srelplt;
1619 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1620
1621 /* Get the index in the procedure linkage table which
1622 corresponds to this symbol. This is the index of this symbol
1623 in all the symbols for which we are making plt entries. The
1624 first entry in the procedure linkage table is reserved. */
1625 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1626
1627 /* Get the offset into the .got table of the entry that
1628 corresponds to this function. Each .got entry is 4 bytes.
1629 The first three are reserved. */
1630 got_offset = (plt_index + 3) * 4;
1631
1632 /* Fill in the entry in the procedure linkage table. */
0e1862bb 1633 if (! bfd_link_pic (info))
84e94c90
NC		 1634 {
1635 /* TODO */
1636 }
1637 else
1638 {
1639 /* TODO */
1640 }
1641
1642 /* Fill in the entry in the global offset table. */
1643 bfd_put_32 (output_bfd,
1644 (splt->output_section->vma
1645 + splt->output_offset
1646 + h->plt.offset
1647 + 12), /* same offset */
1648 sgot->contents + got_offset);
1649
1650 /* Fill in the entry in the .rela.plt section. */
1651 rela.r_offset = (sgot->output_section->vma
1652 + sgot->output_offset
1653 + got_offset);
1654 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT);
1655 rela.r_addend = 0;
1656 loc = srela->contents;
1657 loc += plt_index * sizeof (Elf32_External_Rela);
1658 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1659
1660 if (!h->def_regular)
1661 {
1662 /* Mark the symbol as undefined, rather than as defined in
1663 the .plt section. Leave the value alone. */
1664 sym->st_shndx = SHN_UNDEF;
1665 }
1666
1667 }
1668
1669 if (h->got.offset != (bfd_vma) -1)
1670 {
1671 asection *sgot;
1672 asection *srela;
1673 Elf_Internal_Rela rela;
1674
1675 /* This symbol has an entry in the global offset table. Set it
1676 up. */
1677 sgot = htab->sgot;
1678 srela = htab->srelgot;
1679 BFD_ASSERT (sgot != NULL && srela != NULL);
1680
1681 rela.r_offset = (sgot->output_section->vma
1682 + sgot->output_offset
1683 + (h->got.offset &~ 1));
1684
1685 /* If this is a -Bsymbolic link, and the symbol is defined
1686 locally, we just want to emit a RELATIVE reloc. Likewise if
1687 the symbol was forced to be local because of a version file.
1688 The entry in the global offset table will already have been
1689 initialized in the relocate_section function. */
0e1862bb 1690 if (bfd_link_pic (info)
84e94c90
NC		 1691 && (info->symbolic
1692 || h->dynindx == -1
1693 || h->forced_local)
1694 && h->def_regular)
1695 {
1696 rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
1697 rela.r_addend = (h->root.u.def.value
1698 + h->root.u.def.section->output_section->vma
1699 + h->root.u.def.section->output_offset);
1700 }
1701 else
1702 {
1703 BFD_ASSERT ((h->got.offset & 1) == 0);
1704 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1705 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT);
1706 rela.r_addend = 0;
1707 }
1708
1709 loc = srela->contents;
1710 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1711 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1712 ++srela->reloc_count;
1713 }
1714
1715 if (h->needs_copy)
1716 {
1717 asection *s;
1718 Elf_Internal_Rela rela;
1719
1720 /* This symbols needs a copy reloc. Set it up. */
1721 BFD_ASSERT (h->dynindx != -1
1722 && (h->root.type == bfd_link_hash_defined
1723 || h->root.type == bfd_link_hash_defweak));
1724
3d4d4302 1725 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
84e94c90
NC		 1726 BFD_ASSERT (s != NULL);
1727
1728 rela.r_offset = (h->root.u.def.value
1729 + h->root.u.def.section->output_section->vma
1730 + h->root.u.def.section->output_offset);
1731 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY);
1732 rela.r_addend = 0;
1733 loc = s->contents;
1734 loc += s->reloc_count * sizeof (Elf32_External_Rela);
1735 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1736 ++s->reloc_count;
1737 }
1738
1739 /* Mark some specially defined symbols as absolute. */
9637f6ef 1740 if (h == htab->root.hdynamic || h == htab->root.hgot)
84e94c90
NC		 1741 sym->st_shndx = SHN_ABS;
1742
1743 return TRUE;
1744}
1745
1746static enum elf_reloc_type_class
7e612e98
AM		 1747lm32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1748 const asection *rel_sec ATTRIBUTE_UNUSED,
1749 const Elf_Internal_Rela *rela)
84e94c90
NC		 1750{
1751 switch ((int) ELF32_R_TYPE (rela->r_info))
1752 {
1753 case R_LM32_RELATIVE: return reloc_class_relative;
1754 case R_LM32_JMP_SLOT: return reloc_class_plt;
1755 case R_LM32_COPY: return reloc_class_copy;
1756 default: return reloc_class_normal;
1757 }
1758}
1759
1760/* Adjust a symbol defined by a dynamic object and referenced by a
1761 regular object. The current definition is in some section of the
1762 dynamic object, but we're not including those sections. We have to
1763 change the definition to something the rest of the link can
1764 understand. */
1765
1766static bfd_boolean
1767lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1768 struct elf_link_hash_entry *h)
1769{
1770 struct elf_lm32_link_hash_table *htab;
1771 struct elf_lm32_link_hash_entry *eh;
1772 struct elf_lm32_dyn_relocs *p;
1773 bfd *dynobj;
1774 asection *s;
1775
1776 dynobj = elf_hash_table (info)->dynobj;
1777
1778 /* Make sure we know what is going on here. */
1779 BFD_ASSERT (dynobj != NULL
1780 && (h->needs_plt
1781 || h->u.weakdef != NULL
1782 || (h->def_dynamic
1783 && h->ref_regular
1784 && !h->def_regular)));
1785
1786 /* If this is a function, put it in the procedure linkage table. We
1787 will fill in the contents of the procedure linkage table later,
1788 when we know the address of the .got section. */
1789 if (h->type == STT_FUNC
1790 || h->needs_plt)
1791 {
0e1862bb 1792 if (! bfd_link_pic (info)
84e94c90
NC		 1793 && !h->def_dynamic
1794 && !h->ref_dynamic
1795 && h->root.type != bfd_link_hash_undefweak
1796 && h->root.type != bfd_link_hash_undefined)
1797 {
1798 /* This case can occur if we saw a PLT reloc in an input
1799 file, but the symbol was never referred to by a dynamic
1800 object. In such a case, we don't actually need to build
1801 a procedure linkage table, and we can just do a PCREL
1802 reloc instead. */
1803 h->plt.offset = (bfd_vma) -1;
1804 h->needs_plt = 0;
1805 }
1806
1807 return TRUE;
1808 }
1809 else
1810 h->plt.offset = (bfd_vma) -1;
1811
1812 /* If this is a weak symbol, and there is a real definition, the
1813 processor independent code will have arranged for us to see the
1814 real definition first, and we can just use the same value. */
1815 if (h->u.weakdef != NULL)
1816 {
1817 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1818 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1819 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1820 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1821 return TRUE;
1822 }
1823
1824 /* This is a reference to a symbol defined by a dynamic object which
1825 is not a function. */
1826
1827 /* If we are creating a shared library, we must presume that the
1828 only references to the symbol are via the global offset table.
1829 For such cases we need not do anything here; the relocations will
1830 be handled correctly by relocate_section. */
0e1862bb 1831 if (bfd_link_pic (info))
84e94c90
NC		 1832 return TRUE;
1833
1834 /* If there are no references to this symbol that do not use the
1835 GOT, we don't need to generate a copy reloc. */
1836 if (!h->non_got_ref)
1837 return TRUE;
1838
1839 /* If -z nocopyreloc was given, we won't generate them either. */
1840 if (info->nocopyreloc)
1841 {
1842 h->non_got_ref = 0;
1843 return TRUE;
1844 }
1845
1846 eh = (struct elf_lm32_link_hash_entry *) h;
1847 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1848 {
1849 s = p->sec->output_section;
1850 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1851 break;
1852 }
1853
1854 /* If we didn't find any dynamic relocs in sections which needs the
1855 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1856 the copy reloc. */
1857 if (p == NULL)
1858 {
1859 h->non_got_ref = 0;
1860 return TRUE;
1861 }
1862
84e94c90
NC		 1863 /* We must allocate the symbol in our .dynbss section, which will
1864 become part of the .bss section of the executable. There will be
1865 an entry for this symbol in the .dynsym section. The dynamic
1866 object will contain position independent code, so all references
1867 from the dynamic object to this symbol will go through the global
1868 offset table. The dynamic linker will use the .dynsym entry to
1869 determine the address it must put in the global offset table, so
1870 both the dynamic object and the regular object will refer to the
1871 same memory location for the variable. */
1872
1873 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1874 if (htab == NULL)
1875 return FALSE;
1876
84e94c90
NC		 1877 s = htab->sdynbss;
1878 BFD_ASSERT (s != NULL);
1879
1880 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1881 to copy the initial value out of the dynamic object and into the
1882 runtime process image. We need to remember the offset into the
1883 .rela.bss section we are going to use. */
1d7e9d18 1884 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
84e94c90
NC		 1885 {
1886 asection *srel;
1887
1888 srel = htab->srelbss;
1889 BFD_ASSERT (srel != NULL);
1890 srel->size += sizeof (Elf32_External_Rela);
1891 h->needs_copy = 1;
1892 }
1893
6cabe1ea 1894 return _bfd_elf_adjust_dynamic_copy (info, h, s);
84e94c90
NC		 1895}
1896
1897/* Allocate space in .plt, .got and associated reloc sections for
1898 dynamic relocs. */
1899
1900static bfd_boolean
1901allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1902{
1903 struct bfd_link_info *info;
1904 struct elf_lm32_link_hash_table *htab;
1905 struct elf_lm32_link_hash_entry *eh;
1906 struct elf_lm32_dyn_relocs *p;
1907
1908 if (h->root.type == bfd_link_hash_indirect)
1909 return TRUE;
1910
84e94c90
NC		 1911 info = (struct bfd_link_info *) inf;
1912 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1913 if (htab == NULL)
1914 return FALSE;
84e94c90
NC		 1915
1916 eh = (struct elf_lm32_link_hash_entry *) h;
1917
1918 if (htab->root.dynamic_sections_created
1919 && h->plt.refcount > 0)
1920 {
1921 /* Make sure this symbol is output as a dynamic symbol.
1922 Undefined weak syms won't yet be marked as dynamic. */
1923 if (h->dynindx == -1
1924 && !h->forced_local)
1925 {
1926 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1927 return FALSE;
1928 }
1929
0e1862bb 1930 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
84e94c90
NC		 1931 {
1932 asection *s = htab->splt;
1933
1934 /* If this is the first .plt entry, make room for the special
1935 first entry. */
1936 if (s->size == 0)
1937 s->size += PLT_ENTRY_SIZE;
1938
1939 h->plt.offset = s->size;
1940
1941 /* If this symbol is not defined in a regular file, and we are
1942 not generating a shared library, then set the symbol to this
1943 location in the .plt. This is required to make function
1944 pointers compare as equal between the normal executable and
1945 the shared library. */
0e1862bb 1946 if (! bfd_link_pic (info)
84e94c90
NC		 1947 && !h->def_regular)
1948 {
1949 h->root.u.def.section = s;
1950 h->root.u.def.value = h->plt.offset;
1951 }
1952
1953 /* Make room for this entry. */
1954 s->size += PLT_ENTRY_SIZE;
1955
1956 /* We also need to make an entry in the .got.plt section, which
1957 will be placed in the .got section by the linker script. */
1958 htab->sgotplt->size += 4;
1959
1960 /* We also need to make an entry in the .rel.plt section. */
1961 htab->srelplt->size += sizeof (Elf32_External_Rela);
1962 }
1963 else
1964 {
1965 h->plt.offset = (bfd_vma) -1;
1966 h->needs_plt = 0;
1967 }
1968 }
1969 else
1970 {
1971 h->plt.offset = (bfd_vma) -1;
1972 h->needs_plt = 0;
1973 }
1974
1975 if (h->got.refcount > 0)
1976 {
1977 asection *s;
1978 bfd_boolean dyn;
1979
1980 /* Make sure this symbol is output as a dynamic symbol.
1981 Undefined weak syms won't yet be marked as dynamic. */
1982 if (h->dynindx == -1
1983 && !h->forced_local)
1984 {
1985 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1986 return FALSE;
1987 }
1988
1989 s = htab->sgot;
1990
1991 h->got.offset = s->size;
1992 s->size += 4;
1993 dyn = htab->root.dynamic_sections_created;
0e1862bb 1994 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
84e94c90
NC		 1995 htab->srelgot->size += sizeof (Elf32_External_Rela);
1996 }
1997 else
1998 h->got.offset = (bfd_vma) -1;
1999
2000 if (eh->dyn_relocs == NULL)
2001 return TRUE;
2002
2003 /* In the shared -Bsymbolic case, discard space allocated for
2004 dynamic pc-relative relocs against symbols which turn out to be
2005 defined in regular objects. For the normal shared case, discard
2006 space for pc-relative relocs that have become local due to symbol
2007 visibility changes. */
2008
0e1862bb 2009 if (bfd_link_pic (info))
84e94c90
NC		 2010 {
2011 if (h->def_regular
2012 && (h->forced_local
2013 || info->symbolic))
2014 {
2015 struct elf_lm32_dyn_relocs **pp;
2016
2017 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2018 {
2019 p->count -= p->pc_count;
2020 p->pc_count = 0;
2021 if (p->count == 0)
2022 *pp = p->next;
2023 else
2024 pp = &p->next;
2025 }
2026 }
2027
2028 /* Also discard relocs on undefined weak syms with non-default
2029 visibility. */
2030 if (eh->dyn_relocs != NULL
2031 && h->root.type == bfd_link_hash_undefweak)
2032 {
2033 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2034 eh->dyn_relocs = NULL;
2035
2036 /* Make sure undefined weak symbols are output as a dynamic
2037 symbol in PIEs. */
2038 else if (h->dynindx == -1
2039 && !h->forced_local)
2040 {
2041 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2042 return FALSE;
2043 }
2044 }
2045 }
2046 else
2047 {
2048 /* For the non-shared case, discard space for relocs against
2049 symbols which turn out to need copy relocs or are not
2050 dynamic. */
2051
2052 if (!h->non_got_ref
2053 && ((h->def_dynamic
2054 && !h->def_regular)
2055 || (htab->root.dynamic_sections_created
2056 && (h->root.type == bfd_link_hash_undefweak
2057 || h->root.type == bfd_link_hash_undefined))))
2058 {
2059 /* Make sure this symbol is output as a dynamic symbol.
2060 Undefined weak syms won't yet be marked as dynamic. */
2061 if (h->dynindx == -1
2062 && !h->forced_local)
2063 {
2064 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2065 return FALSE;
2066 }
2067
2068 /* If that succeeded, we know we'll be keeping all the
2069 relocs. */
2070 if (h->dynindx != -1)
2071 goto keep;
2072 }
2073
2074 eh->dyn_relocs = NULL;
2075
2076 keep: ;
2077 }
2078
2079 /* Finally, allocate space. */
2080 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2081 {
2082 asection *sreloc = elf_section_data (p->sec)->sreloc;
2083 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2084 }
2085
2086 return TRUE;
2087}
2088
2089/* Find any dynamic relocs that apply to read-only sections. */
2090
2091static bfd_boolean
2092readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2093{
2094 struct elf_lm32_link_hash_entry *eh;
2095 struct elf_lm32_dyn_relocs *p;
2096
84e94c90
NC		 2097 eh = (struct elf_lm32_link_hash_entry *) h;
2098 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2099 {
2100 asection *s = p->sec->output_section;
2101
2102 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2103 {
2104 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2105
2106 info->flags |= DF_TEXTREL;
2107
2108 /* Not an error, just cut short the traversal. */
2109 return FALSE;
2110 }
2111 }
2112 return TRUE;
2113}
2114
2115/* Set the sizes of the dynamic sections. */
2116
2117static bfd_boolean
2118lm32_elf_size_dynamic_sections (bfd *output_bfd,
2119 struct bfd_link_info *info)
2120{
2121 struct elf_lm32_link_hash_table *htab;
2122 bfd *dynobj;
2123 asection *s;
2124 bfd_boolean relocs;
2125 bfd *ibfd;
2126
2127 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2128 if (htab == NULL)
2129 return FALSE;
2130
84e94c90
NC		 2131 dynobj = htab->root.dynobj;
2132 BFD_ASSERT (dynobj != NULL);
2133
2134 if (htab->root.dynamic_sections_created)
2135 {
2136 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2137 if (bfd_link_executable (info) && !info->nointerp)
84e94c90 2138 {
3d4d4302 2139 s = bfd_get_linker_section (dynobj, ".interp");
84e94c90
NC		 2140 BFD_ASSERT (s != NULL);
2141 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2142 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2143 }
2144 }
2145
2146 /* Set up .got offsets for local syms, and space for local dynamic
2147 relocs. */
c72f2fb2 2148 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
84e94c90
NC		 2149 {
2150 bfd_signed_vma *local_got;
2151 bfd_signed_vma *end_local_got;
2152 bfd_size_type locsymcount;
2153 Elf_Internal_Shdr *symtab_hdr;
2154 asection *srel;
2155
2156 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2157 continue;
2158
2159 for (s = ibfd->sections; s != NULL; s = s->next)
2160 {
2161 struct elf_lm32_dyn_relocs *p;
2162
2163 for (p = ((struct elf_lm32_dyn_relocs *)
2164 elf_section_data (s)->local_dynrel);
2165 p != NULL;
2166 p = p->next)
2167 {
2168 if (! bfd_is_abs_section (p->sec)
2169 && bfd_is_abs_section (p->sec->output_section))
2170 {
2171 /* Input section has been discarded, either because
2172 it is a copy of a linkonce section or due to
2173 linker script /DISCARD/, so we'll be discarding
2174 the relocs too. */
2175 }
2176 else if (p->count != 0)
2177 {
2178 srel = elf_section_data (p->sec)->sreloc;
2179 srel->size += p->count * sizeof (Elf32_External_Rela);
2180 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2181 info->flags |= DF_TEXTREL;
2182 }
2183 }
2184 }
2185
2186 local_got = elf_local_got_refcounts (ibfd);
2187 if (!local_got)
2188 continue;
2189
2190 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2191 locsymcount = symtab_hdr->sh_info;
2192 end_local_got = local_got + locsymcount;
2193 s = htab->sgot;
2194 srel = htab->srelgot;
2195 for (; local_got < end_local_got; ++local_got)
2196 {
2197 if (*local_got > 0)
2198 {
2199 *local_got = s->size;
2200 s->size += 4;
0e1862bb 2201 if (bfd_link_pic (info))
84e94c90
NC		 2202 srel->size += sizeof (Elf32_External_Rela);
2203 }
2204 else
2205 *local_got = (bfd_vma) -1;
2206 }
2207 }
2208
2209 /* Allocate global sym .plt and .got entries, and space for global
2210 sym dynamic relocs. */
2211 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2212
2213 /* We now have determined the sizes of the various dynamic sections.
2214 Allocate memory for them. */
2215 relocs = FALSE;
2216 for (s = dynobj->sections; s != NULL; s = s->next)
2217 {
2218 if ((s->flags & SEC_LINKER_CREATED) == 0)
2219 continue;
2220
2221 if (s == htab->splt
2222 || s == htab->sgot
2223 || s == htab->sgotplt
2224 || s == htab->sdynbss)
2225 {
2226 /* Strip this section if we don't need it; see the
2227 comment below. */
2228 }
2229 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2230 {
2231 if (s->size != 0 && s != htab->srelplt)
2232 relocs = TRUE;
2233
2234 /* We use the reloc_count field as a counter if we need
2235 to copy relocs into the output file. */
2236 s->reloc_count = 0;
2237 }
2238 else
2239 /* It's not one of our sections, so don't allocate space. */
2240 continue;
2241
2242 if (s->size == 0)
2243 {
2244 /* If we don't need this section, strip it from the
2245 output file. This is mostly to handle .rela.bss and
2246 .rela.plt. We must create both sections in
2247 create_dynamic_sections, because they must be created
2248 before the linker maps input sections to output
2249 sections. The linker does that before
2250 adjust_dynamic_symbol is called, and it is that
2251 function which decides whether anything needs to go
2252 into these sections. */
2253 s->flags |= SEC_EXCLUDE;
2254 continue;
2255 }
2256
2257 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2258 continue;
2259
2260 /* Allocate memory for the section contents. We use bfd_zalloc
2261 here in case unused entries are not reclaimed before the
2262 section's contents are written out. This should not happen,
2263 but this way if it does, we get a R_LM32_NONE reloc instead
2264 of garbage. */
2265 s->contents = bfd_zalloc (dynobj, s->size);
2266 if (s->contents == NULL)
2267 return FALSE;
2268 }
2269
2270 if (htab->root.dynamic_sections_created)
2271 {
2272 /* Add some entries to the .dynamic section. We fill in the
2273 values later, in lm32_elf_finish_dynamic_sections, but we
2274 must add the entries now so that we get the correct size for
2275 the .dynamic section. The DT_DEBUG entry is filled in by the
2276 dynamic linker and used by the debugger. */
2277#define add_dynamic_entry(TAG, VAL) \
2278 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2279
0e1862bb 2280 if (bfd_link_executable (info))
84e94c90
NC		 2281 {
2282 if (! add_dynamic_entry (DT_DEBUG, 0))
2283 return FALSE;
2284 }
2285
2286 if (htab->splt->size != 0)
2287 {
2288 if (! add_dynamic_entry (DT_PLTGOT, 0)
2289 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2290 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2291 || ! add_dynamic_entry (DT_JMPREL, 0))
2292 return FALSE;
2293 }
2294
2295 if (relocs)
2296 {
2297 if (! add_dynamic_entry (DT_RELA, 0)
2298 || ! add_dynamic_entry (DT_RELASZ, 0)
2299 || ! add_dynamic_entry (DT_RELAENT,
2300 sizeof (Elf32_External_Rela)))
2301 return FALSE;
2302
2303 /* If any dynamic relocs apply to a read-only section,
2304 then we need a DT_TEXTREL entry. */
2305 if ((info->flags & DF_TEXTREL) == 0)
2306 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2307 info);
2308
2309 if ((info->flags & DF_TEXTREL) != 0)
2310 {
2311 if (! add_dynamic_entry (DT_TEXTREL, 0))
2312 return FALSE;
2313 }
2314 }
2315 }
2316#undef add_dynamic_entry
2317
2318 /* Allocate .rofixup section. */
2319 if (IS_FDPIC (output_bfd))
2320 {
2321 struct weak_symbol_list *list_start = NULL, *list_end = NULL;
2322 int rgot_weak_count = 0;
2323 int r32_count = 0;
2324 int rgot_count = 0;
2325 /* Look for deleted sections. */
c72f2fb2 2326 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
84e94c90
NC		 2327 {
2328 for (s = ibfd->sections; s != NULL; s = s->next)
2329 {
2330 if (s->reloc_count)
2331 {
2332 /* Count relocs that need .rofixup entires. */
2333 Elf_Internal_Rela *internal_relocs, *end;
2334 internal_relocs = elf_section_data (s)->relocs;
2335 if (internal_relocs == NULL)
2336 internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE));
2337 if (internal_relocs != NULL)
2338 {
2339 end = internal_relocs + s->reloc_count;
2340 while (internal_relocs < end)
2341 {
2342 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2343 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
2344 unsigned long r_symndx;
2345 struct elf_link_hash_entry *h;
2346
2347 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2348 sym_hashes = elf_sym_hashes (ibfd);
2349 r_symndx = ELF32_R_SYM (internal_relocs->r_info);
2350 h = NULL;
2351 if (r_symndx < symtab_hdr->sh_info)
2352 {
2353 }
2354 else
2355 {
2356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2357 while (h->root.type == bfd_link_hash_indirect
2358 || h->root.type == bfd_link_hash_warning)
2359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2360 }
2361
2362 /* Don't generate entries for weak symbols. */
2363 if (!h || (h && h->root.type != bfd_link_hash_undefweak))
2364 {
dbaa2011 2365 if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0))
84e94c90
NC		 2366 {
2367 switch (ELF32_R_TYPE (internal_relocs->r_info))
2368 {
2369 case R_LM32_32:
2370 r32_count++;
2371 break;
2372 case R_LM32_16_GOT:
2373 rgot_count++;
2374 break;
2375 }
2376 }
2377 }
2378 else
2379 {
2380 struct weak_symbol_list *current, *new_entry;
2381 /* Is this symbol already in the list? */
2382 for (current = list_start; current; current = current->next)
2383 {
2384 if (!strcmp (current->name, h->root.root.string))
2385 break;
2386 }
dbaa2011 2387 if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC))
84e94c90
NC		 2388 {
2389 /* Will this have an entry in the GOT. */
2390 if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT)
2391 {
2392 /* Create a new entry. */
2393 new_entry = malloc (sizeof (struct weak_symbol_list));
2394 if (!new_entry)
2395 return FALSE;
2396 new_entry->name = h->root.root.string;
2397 new_entry->next = NULL;
2398 /* Add to list */
2399 if (list_start == NULL)
2400 {
2401 list_start = new_entry;
2402 list_end = new_entry;
2403 }
2404 else
2405 {
2406 list_end->next = new_entry;
2407 list_end = new_entry;
2408 }
2409 /* Increase count of undefined weak symbols in the got. */
2410 rgot_weak_count++;
2411 }
2412 }
2413 }
2414 internal_relocs++;
2415 }
2416 }
2417 else
2418 return FALSE;
2419 }
2420 }
2421 }
2422 /* Free list. */
2423 while (list_start)
2424 {
2425 list_end = list_start->next;
2426 free (list_start);
2427 list_start = list_end;
2428 }
2429
2430 /* Size sections. */
2431 lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4;
2432 if (lm32fdpic_fixup32_section (info)->size == 0)
2433 lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE;
2434 else
2435 {
2436 lm32fdpic_fixup32_section (info)->contents =
2437 bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size);
2438 if (lm32fdpic_fixup32_section (info)->contents == NULL)
2439 return FALSE;
2440 }
2441 }
2442
2443 return TRUE;
2444}
2445
2446/* Create dynamic sections when linking against a dynamic object. */
2447
2448static bfd_boolean
2449lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2450{
2451 struct elf_lm32_link_hash_table *htab;
2452 flagword flags, pltflags;
2453 asection *s;
2454 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2455 int ptralign = 2; /* 32bit */
2456
2457 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2458 if (htab == NULL)
2459 return FALSE;
84e94c90
NC		 2460
2461 /* Make sure we have a GOT - For the case where we have a dynamic object
2462 but none of the relocs in check_relocs */
2463 if (! create_got_section (abfd, info))
2464 return FALSE;
2465 if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL))
2466 {
2467 if (! create_rofixup_section (abfd, info))
2468 return FALSE;
2469 }
2470
2471 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2472 .rel[a].bss sections. */
2473 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2474 | SEC_LINKER_CREATED);
2475
2476 pltflags = flags;
2477 pltflags |= SEC_CODE;
2478 if (bed->plt_not_loaded)
2479 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2480 if (bed->plt_readonly)
2481 pltflags |= SEC_READONLY;
2482
3d4d4302 2483 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
84e94c90
NC		 2484 htab->splt = s;
2485 if (s == NULL
2486 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2487 return FALSE;
2488
2489 if (bed->want_plt_sym)
2490 {
2491 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2492 .plt section. */
2493 struct bfd_link_hash_entry *bh = NULL;
2494 struct elf_link_hash_entry *h;
2495
2496 if (! (_bfd_generic_link_add_one_symbol
2497 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2498 (bfd_vma) 0, NULL, FALSE,
2499 get_elf_backend_data (abfd)->collect, &bh)))
2500 return FALSE;
2501 h = (struct elf_link_hash_entry *) bh;
2502 h->def_regular = 1;
2503 h->type = STT_OBJECT;
2504 htab->root.hplt = h;
2505
0e1862bb 2506 if (bfd_link_pic (info)
84e94c90
NC		 2507 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2508 return FALSE;
2509 }
2510
3d4d4302
AM		 2511 s = bfd_make_section_anyway_with_flags (abfd,
2512 bed->default_use_rela_p
2513 ? ".rela.plt" : ".rel.plt",
2514 flags | SEC_READONLY);
84e94c90
NC		 2515 htab->srelplt = s;
2516 if (s == NULL
2517 || ! bfd_set_section_alignment (abfd, s, ptralign))
2518 return FALSE;
2519
2520 if (htab->sgot == NULL
2521 && ! create_got_section (abfd, info))
2522 return FALSE;
2523
84e94c90
NC		 2524 if (bed->want_dynbss)
2525 {
2526 /* The .dynbss section is a place to put symbols which are defined
2527 by dynamic objects, are referenced by regular objects, and are
2528 not functions. We must allocate space for them in the process
2529 image and use a R_*_COPY reloc to tell the dynamic linker to
2530 initialize them at run time. The linker script puts the .dynbss
2531 section into the .bss section of the final image. */
3d4d4302
AM		 2532 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2533 SEC_ALLOC | SEC_LINKER_CREATED);
84e94c90
NC		 2534 htab->sdynbss = s;
2535 if (s == NULL)
2536 return FALSE;
2537 /* The .rel[a].bss section holds copy relocs. This section is not
2538 normally needed. We need to create it here, though, so that the
2539 linker will map it to an output section. We can't just create it
2540 only if we need it, because we will not know whether we need it
2541 until we have seen all the input files, and the first time the
2542 main linker code calls BFD after examining all the input files
2543 (size_dynamic_sections) the input sections have already been
2544 mapped to the output sections. If the section turns out not to
2545 be needed, we can discard it later. We will never need this
2546 section when generating a shared object, since they do not use
2547 copy relocs. */
0e1862bb 2548 if (! bfd_link_pic (info))
84e94c90 2549 {
3d4d4302
AM		 2550 s = bfd_make_section_anyway_with_flags (abfd,
2551 (bed->default_use_rela_p
2552 ? ".rela.bss" : ".rel.bss"),
2553 flags | SEC_READONLY);
84e94c90
NC		 2554 htab->srelbss = s;
2555 if (s == NULL
2556 || ! bfd_set_section_alignment (abfd, s, ptralign))
2557 return FALSE;
2558 }
2559 }
2560
2561 return TRUE;
2562}
2563
2564/* Copy the extra info we tack onto an elf_link_hash_entry. */
2565
2566static void
2567lm32_elf_copy_indirect_symbol (struct bfd_link_info *info,
2568 struct elf_link_hash_entry *dir,
2569 struct elf_link_hash_entry *ind)
2570{
2571 struct elf_lm32_link_hash_entry * edir;
2572 struct elf_lm32_link_hash_entry * eind;
2573
2574 edir = (struct elf_lm32_link_hash_entry *) dir;
2575 eind = (struct elf_lm32_link_hash_entry *) ind;
2576
2577 if (eind->dyn_relocs != NULL)
2578 {
2579 if (edir->dyn_relocs != NULL)
2580 {
2581 struct elf_lm32_dyn_relocs **pp;
2582 struct elf_lm32_dyn_relocs *p;
2583
2584 /* Add reloc counts against the indirect sym to the direct sym
2585 list. Merge any entries against the same section. */
2586 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2587 {
2588 struct elf_lm32_dyn_relocs *q;
2589
2590 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2591 if (q->sec == p->sec)
2592 {
2593 q->pc_count += p->pc_count;
2594 q->count += p->count;
2595 *pp = p->next;
2596 break;
2597 }
2598 if (q == NULL)
2599 pp = &p->next;
2600 }
2601 *pp = edir->dyn_relocs;
2602 }
2603
2604 edir->dyn_relocs = eind->dyn_relocs;
2605 eind->dyn_relocs = NULL;
2606 }
2607
2608 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2609}
2610
2611static bfd_boolean
04c3a755 2612lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
84e94c90 2613{
0e1862bb 2614 if (!bfd_link_relocatable (info))
84e94c90 2615 {
04c3a755
NS		 2616 if (!bfd_elf_stack_segment_size (output_bfd, info,
2617 "__stacksize", DEFAULT_STACK_SIZE))
2618 return FALSE;
84e94c90 2619
84e94c90 2620 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
84e94c90 2621 if (sec)
04c3a755 2622 sec->size = info->stacksize >= 0 ? info->stacksize : 0;
84e94c90
NC		 2623 }
2624
2625 return TRUE;
2626}
2627
84e94c90
NC		 2628static bfd_boolean
2629lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2630{
2631 unsigned i;
2632
2633 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2634 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2635 return TRUE;
2636
e2349352 2637 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
84e94c90
NC		 2638 return FALSE;
2639
2640 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
2641 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
2642 return TRUE;
2643
2644 /* Copy the stack size. */
2645 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
2646 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
2647 {
2648 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
2649
2650 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
2651 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
2652 {
2653 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
2654
2655 /* Rewrite the phdrs, since we're only called after they were first written. */
2656 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
2657 ->s->sizeof_ehdr, SEEK_SET) != 0
2658 || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
2659 elf_elfheader (obfd)->e_phnum) != 0)
2660 return FALSE;
2661 break;
2662 }
2663
2664 break;
2665 }
2666
2667 return TRUE;
2668}
2669
2670
2671#define ELF_ARCH bfd_arch_lm32
ae95ffa6 2672#define ELF_TARGET_ID LM32_ELF_DATA
84e94c90
NC		 2673#define ELF_MACHINE_CODE EM_LATTICEMICO32
2674#define ELF_MAXPAGESIZE 0x1000
2675
6d00b590 2676#define TARGET_BIG_SYM lm32_elf32_vec
84e94c90
NC		 2677#define TARGET_BIG_NAME "elf32-lm32"
2678
2679#define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2680#define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2681#define elf_info_to_howto lm32_info_to_howto_rela
2682#define elf_info_to_howto_rel 0
2683#define elf_backend_rela_normal 1
2684#define elf_backend_object_p lm32_elf_object_p
2685#define elf_backend_final_write_processing lm32_elf_final_write_processing
04c3a755 2686#define elf_backend_stack_align 8
84e94c90
NC		 2687#define elf_backend_can_gc_sections 1
2688#define elf_backend_can_refcount 1
2689#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2690#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2691#define elf_backend_plt_readonly 1
2692#define elf_backend_want_got_plt 1
2693#define elf_backend_want_plt_sym 0
2694#define elf_backend_got_header_size 12
2695#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2696#define elf_backend_check_relocs lm32_elf_check_relocs
2697#define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2698#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2699#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2700#define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2701#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2702#define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2703#define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2704#define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2705#define elf_backend_relocate_section lm32_elf_relocate_section
2706
2707#include "elf32-target.h"
2708
2709#undef ELF_MAXPAGESIZE
2710#define ELF_MAXPAGESIZE 0x4000
2711
2712
2713#undef TARGET_BIG_SYM
6d00b590 2714#define TARGET_BIG_SYM lm32_elf32_fdpic_vec
84e94c90
NC		 2715#undef TARGET_BIG_NAME
2716#define TARGET_BIG_NAME "elf32-lm32fdpic"
2717#undef elf32_bed
2718#define elf32_bed elf32_lm32fdpic_bed
2719
2720#undef elf_backend_always_size_sections
2721#define elf_backend_always_size_sections lm32_elf_always_size_sections
84e94c90
NC		 2722#undef bfd_elf32_bfd_copy_private_bfd_data
2723#define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2724
2725#include "elf32-target.h"
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