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84e94c90 1/* Lattice Mico32-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 2008-2015 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;
1152 if (! ((*info->callbacks->reloc_overflow)
1153 (info, (h ? &h->root : NULL), name, howto->name,
1154 (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
1155 return FALSE;
1156 break;
1157
1158 case bfd_reloc_undefined:
1159 if (! ((*info->callbacks->undefined_symbol)
1160 (info, name, input_bfd, input_section,
1161 rel->r_offset, TRUE)))
1162 return FALSE;
1163 break;
1164
1165 case bfd_reloc_outofrange:
1166 msg = _("internal error: out of range error");
1167 goto common_error;
1168
1169 case bfd_reloc_notsupported:
1170 msg = _("internal error: unsupported relocation error");
1171 goto common_error;
1172
1173 case bfd_reloc_dangerous:
1174 msg = _("internal error: dangerous error");
1175 goto common_error;
1176
1177 default:
1178 msg = _("internal error: unknown error");
1179 /* fall through */
1180
1181 common_error:
1182 if (!((*info->callbacks->warning)
1183 (info, msg, name, input_bfd, input_section,
1184 rel->r_offset)))
1185 return FALSE;
1186 break;
1187 }
1188 }
1189 }
1190
1191 return TRUE;
1192}
1193
1194static asection *
1195lm32_elf_gc_mark_hook (asection *sec,
1196 struct bfd_link_info *info,
1197 Elf_Internal_Rela *rel,
1198 struct elf_link_hash_entry *h,
1199 Elf_Internal_Sym *sym)
1200{
1201 if (h != NULL)
1202 switch (ELF32_R_TYPE (rel->r_info))
1203 {
1204 case R_LM32_GNU_VTINHERIT:
1205 case R_LM32_GNU_VTENTRY:
1206 return NULL;
1207 }
1208
1209 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1210}
1211
1212static bfd_boolean
1213lm32_elf_gc_sweep_hook (bfd *abfd,
1214 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1215 asection *sec,
1216 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1217{
1218 /* Update the got entry reference counts for the section being removed. */
1219 Elf_Internal_Shdr *symtab_hdr;
1220 struct elf_link_hash_entry **sym_hashes;
1221 bfd_signed_vma *local_got_refcounts;
1222 const Elf_Internal_Rela *rel, *relend;
1223
1224 elf_section_data (sec)->local_dynrel = NULL;
1225
1226 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1227 sym_hashes = elf_sym_hashes (abfd);
1228 local_got_refcounts = elf_local_got_refcounts (abfd);
1229
1230 relend = relocs + sec->reloc_count;
1231 for (rel = relocs; rel < relend; rel++)
1232 {
1233 unsigned long r_symndx;
1234 struct elf_link_hash_entry *h = NULL;
1235
1236 r_symndx = ELF32_R_SYM (rel->r_info);
1237 if (r_symndx >= symtab_hdr->sh_info)
1238 {
1239 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1240 while (h->root.type == bfd_link_hash_indirect
1241 || h->root.type == bfd_link_hash_warning)
1242 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1243 }
1244
1245 switch (ELF32_R_TYPE (rel->r_info))
1246 {
1247 case R_LM32_16_GOT:
1248 if (h != NULL)
1249 {
1250 if (h->got.refcount > 0)
1251 h->got.refcount--;
1252 }
1253 else
1254 {
1255 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1256 local_got_refcounts[r_symndx]--;
1257 }
1258 break;
1259
1260 default:
1261 break;
1262 }
1263 }
1264 return TRUE;
1265}
1266
1267/* Look through the relocs for a section during the first phase. */
1268
1269static bfd_boolean
1270lm32_elf_check_relocs (bfd *abfd,
1271 struct bfd_link_info *info,
1272 asection *sec,
1273 const Elf_Internal_Rela *relocs)
1274{
1275 Elf_Internal_Shdr *symtab_hdr;
1276 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1277 const Elf_Internal_Rela *rel;
1278 const Elf_Internal_Rela *rel_end;
1279 struct elf_lm32_link_hash_table *htab;
1280 bfd *dynobj;
84e94c90 1281
0e1862bb 1282 if (bfd_link_relocatable (info))
84e94c90
NC		 1283 return TRUE;
1284
84e94c90
NC		 1285 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1286 sym_hashes = elf_sym_hashes (abfd);
1287 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
1288 if (!elf_bad_symtab (abfd))
1289 sym_hashes_end -= symtab_hdr->sh_info;
1290
1291 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1292 if (htab == NULL)
1293 return FALSE;
1294
84e94c90 1295 dynobj = htab->root.dynobj;
84e94c90
NC		 1296
1297 rel_end = relocs + sec->reloc_count;
1298 for (rel = relocs; rel < rel_end; rel++)
1299 {
1300 int r_type;
1301 struct elf_link_hash_entry *h;
1302 unsigned long r_symndx;
1303
1304 r_symndx = ELF32_R_SYM (rel->r_info);
1305 r_type = ELF32_R_TYPE (rel->r_info);
1306 if (r_symndx < symtab_hdr->sh_info)
1307 h = NULL;
1308 else
1309 {
1310 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1311 while (h->root.type == bfd_link_hash_indirect
1312 || h->root.type == bfd_link_hash_warning)
1313 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 1314
1315 /* PR15323, ref flags aren't set for references in the same
1316 object. */
1317 h->root.non_ir_ref = 1;
84e94c90
NC		 1318 }
1319
1320 /* Some relocs require a global offset table. */
1321 if (htab->sgot == NULL)
1322 {
1323 switch (r_type)
1324 {
1325 case R_LM32_16_GOT:
1326 case R_LM32_GOTOFF_HI16:
1327 case R_LM32_GOTOFF_LO16:
1328 if (dynobj == NULL)
1329 htab->root.dynobj = dynobj = abfd;
1330 if (! create_got_section (dynobj, info))
1331 return FALSE;
1332 break;
1333 }
1334 }
1335
1336 /* Some relocs require a rofixup table. */
1337 if (IS_FDPIC (abfd))
1338 {
1339 switch (r_type)
1340 {
1341 case R_LM32_32:
1342 /* FDPIC requires a GOT if there is a .rofixup section
1343 (Normal ELF doesn't). */
1344 if (dynobj == NULL)
1345 htab->root.dynobj = dynobj = abfd;
1346 if (! create_got_section (dynobj, info))
1347 return FALSE;
1348 /* Create .rofixup section */
1349 if (htab->sfixup32 == NULL)
1350 {
3d4d4302 1351 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1352 return FALSE;
1353 }
1354 break;
1355 case R_LM32_16_GOT:
1356 case R_LM32_GOTOFF_HI16:
1357 case R_LM32_GOTOFF_LO16:
1358 /* Create .rofixup section. */
1359 if (htab->sfixup32 == NULL)
1360 {
3d4d4302
AM		 1361 if (dynobj == NULL)
1362 htab->root.dynobj = dynobj = abfd;
1363 if (! create_rofixup_section (dynobj, info))
84e94c90
NC		 1364 return FALSE;
1365 }
1366 break;
1367 }
1368 }
1369
1370 switch (r_type)
1371 {
1372 case R_LM32_16_GOT:
1373 if (h != NULL)
1374 h->got.refcount += 1;
1375 else
1376 {
1377 bfd_signed_vma *local_got_refcounts;
1378
1379 /* This is a global offset table entry for a local symbol. */
1380 local_got_refcounts = elf_local_got_refcounts (abfd);
1381 if (local_got_refcounts == NULL)
1382 {
1383 bfd_size_type size;
1384
1385 size = symtab_hdr->sh_info;
1386 size *= sizeof (bfd_signed_vma);
1387 local_got_refcounts = bfd_zalloc (abfd, size);
1388 if (local_got_refcounts == NULL)
1389 return FALSE;
1390 elf_local_got_refcounts (abfd) = local_got_refcounts;
1391 }
1392 local_got_refcounts[r_symndx] += 1;
1393 }
1394 break;
1395
1396 /* This relocation describes the C++ object vtable hierarchy.
1397 Reconstruct it for later use during GC. */
1398 case R_LM32_GNU_VTINHERIT:
1399 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1400 return FALSE;
1401 break;
1402
1403 /* This relocation describes which C++ vtable entries are actually
1404 used. Record for later use during GC. */
1405 case R_LM32_GNU_VTENTRY:
1406 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1407 return FALSE;
1408 break;
1409
1410 }
1411 }
1412
1413 return TRUE;
1414}
1415
1416/* Finish up the dynamic sections. */
1417
1418static bfd_boolean
1419lm32_elf_finish_dynamic_sections (bfd *output_bfd,
1420 struct bfd_link_info *info)
1421{
1422 struct elf_lm32_link_hash_table *htab;
1423 bfd *dynobj;
1424 asection *sdyn;
1425 asection *sgot;
1426
1427 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1428 if (htab == NULL)
1429 return FALSE;
1430
84e94c90
NC		 1431 dynobj = htab->root.dynobj;
1432
1433 sgot = htab->sgotplt;
3d4d4302 1434 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
84e94c90
NC		 1435
1436 if (htab->root.dynamic_sections_created)
1437 {
1438 asection *splt;
1439 Elf32_External_Dyn *dyncon, *dynconend;
1440
1441 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1442
1443 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1444 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1445
1446 for (; dyncon < dynconend; dyncon++)
1447 {
1448 Elf_Internal_Dyn dyn;
84e94c90
NC		 1449 asection *s;
1450
1451 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1452
1453 switch (dyn.d_tag)
1454 {
1455 default:
1456 break;
1457
1458 case DT_PLTGOT:
84e94c90
NC		 1459 s = htab->sgot->output_section;
1460 goto get_vma;
1461 case DT_JMPREL:
84e94c90
NC		 1462 s = htab->srelplt->output_section;
1463 get_vma:
1464 BFD_ASSERT (s != NULL);
1465 dyn.d_un.d_ptr = s->vma;
1466 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1467 break;
1468
1469 case DT_PLTRELSZ:
1470 s = htab->srelplt->output_section;
1471 BFD_ASSERT (s != NULL);
1472 dyn.d_un.d_val = s->size;
1473 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1474 break;
1475
1476 case DT_RELASZ:
1477 /* My reading of the SVR4 ABI indicates that the
1478 procedure linkage table relocs (DT_JMPREL) should be
1479 included in the overall relocs (DT_RELA). This is
1480 what Solaris does. However, UnixWare can not handle
1481 that case. Therefore, we override the DT_RELASZ entry
1482 here to make it not include the JMPREL relocs. Since
1483 the linker script arranges for .rela.plt to follow all
1484 other relocation sections, we don't have to worry
1485 about changing the DT_RELA entry. */
1486 if (htab->srelplt != NULL)
1487 {
1488 s = htab->srelplt->output_section;
1489 dyn.d_un.d_val -= s->size;
1490 }
1491 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1492 break;
1493 }
1494 }
1495
1496 /* Fill in the first entry in the procedure linkage table. */
1497 splt = htab->splt;
1498 if (splt && splt->size > 0)
1499 {
0e1862bb 1500 if (bfd_link_pic (info))
84e94c90
NC		 1501 {
1502 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
1503 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
1504 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
1505 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
1506 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
1507 }
1508 else
1509 {
1510 unsigned long addr;
1511 /* addr = .got + 4 */
1512 addr = sgot->output_section->vma + sgot->output_offset + 4;
1513 bfd_put_32 (output_bfd,
1514 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1515 splt->contents);
1516 bfd_put_32 (output_bfd,
1517 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1518 splt->contents + 4);
1519 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1520 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1521 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1522 }
1523
1524 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
1525 PLT_ENTRY_SIZE;
1526 }
1527 }
1528
1529 /* Fill in the first three entries in the global offset table. */
1530 if (sgot && sgot->size > 0)
1531 {
1532 if (sdyn == NULL)
1533 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1534 else
1535 bfd_put_32 (output_bfd,
1536 sdyn->output_section->vma + sdyn->output_offset,
1537 sgot->contents);
1538 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1539 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1540
1541 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1542 if (elf_section_data (sgot->output_section) != NULL)
1543 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1544 }
1545
1546 if (lm32fdpic_fixup32_section (info))
1547 {
1548 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
1549 bfd_vma got_value = hgot->root.u.def.value
1550 + hgot->root.u.def.section->output_section->vma
1551 + hgot->root.u.def.section->output_offset;
1552 struct bfd_link_hash_entry *hend;
1553
1554 /* Last entry is pointer to GOT. */
1555 _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value);
1556
1557 /* Check we wrote enough entries. */
1558 if (lm32fdpic_fixup32_section (info)->size
1559 != (lm32fdpic_fixup32_section (info)->reloc_count * 4))
1560 {
1561 (*_bfd_error_handler)
1562 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1563 lm32fdpic_fixup32_section (info)->size/4,
1564 lm32fdpic_fixup32_section (info)->reloc_count);
1565 return FALSE;
1566 }
1567
1568 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__",
1569 FALSE, FALSE, TRUE);
1570 if (hend
1571 && (hend->type == bfd_link_hash_defined
1572 || hend->type == bfd_link_hash_defweak))
1573 {
1574 bfd_vma value =
1575 lm32fdpic_fixup32_section (info)->output_section->vma
1576 + lm32fdpic_fixup32_section (info)->output_offset
1577 + lm32fdpic_fixup32_section (info)->size
1578 - hend->u.def.section->output_section->vma
1579 - hend->u.def.section->output_offset;
1580 BFD_ASSERT (hend->u.def.value == value);
1581 if (hend->u.def.value != value)
1582 {
1583 (*_bfd_error_handler)
1584 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value);
1585 return FALSE;
1586 }
1587 }
1588 }
1589
1590 return TRUE;
1591}
1592
1593/* Finish up dynamic symbol handling. We set the contents of various
1594 dynamic sections here. */
1595
1596static bfd_boolean
1597lm32_elf_finish_dynamic_symbol (bfd *output_bfd,
1598 struct bfd_link_info *info,
1599 struct elf_link_hash_entry *h,
1600 Elf_Internal_Sym *sym)
1601{
1602 struct elf_lm32_link_hash_table *htab;
84e94c90
NC		 1603 bfd_byte *loc;
1604
1605 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1606 if (htab == NULL)
1607 return FALSE;
1608
84e94c90
NC		 1609 if (h->plt.offset != (bfd_vma) -1)
1610 {
1611 asection *splt;
1612 asection *sgot;
1613 asection *srela;
1614
1615 bfd_vma plt_index;
1616 bfd_vma got_offset;
1617 Elf_Internal_Rela rela;
1618
1619 /* This symbol has an entry in the procedure linkage table. Set
1620 it up. */
1621 BFD_ASSERT (h->dynindx != -1);
1622
1623 splt = htab->splt;
1624 sgot = htab->sgotplt;
1625 srela = htab->srelplt;
1626 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1627
1628 /* Get the index in the procedure linkage table which
1629 corresponds to this symbol. This is the index of this symbol
1630 in all the symbols for which we are making plt entries. The
1631 first entry in the procedure linkage table is reserved. */
1632 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1633
1634 /* Get the offset into the .got table of the entry that
1635 corresponds to this function. Each .got entry is 4 bytes.
1636 The first three are reserved. */
1637 got_offset = (plt_index + 3) * 4;
1638
1639 /* Fill in the entry in the procedure linkage table. */
0e1862bb 1640 if (! bfd_link_pic (info))
84e94c90
NC		 1641 {
1642 /* TODO */
1643 }
1644 else
1645 {
1646 /* TODO */
1647 }
1648
1649 /* Fill in the entry in the global offset table. */
1650 bfd_put_32 (output_bfd,
1651 (splt->output_section->vma
1652 + splt->output_offset
1653 + h->plt.offset
1654 + 12), /* same offset */
1655 sgot->contents + got_offset);
1656
1657 /* Fill in the entry in the .rela.plt section. */
1658 rela.r_offset = (sgot->output_section->vma
1659 + sgot->output_offset
1660 + got_offset);
1661 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT);
1662 rela.r_addend = 0;
1663 loc = srela->contents;
1664 loc += plt_index * sizeof (Elf32_External_Rela);
1665 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1666
1667 if (!h->def_regular)
1668 {
1669 /* Mark the symbol as undefined, rather than as defined in
1670 the .plt section. Leave the value alone. */
1671 sym->st_shndx = SHN_UNDEF;
1672 }
1673
1674 }
1675
1676 if (h->got.offset != (bfd_vma) -1)
1677 {
1678 asection *sgot;
1679 asection *srela;
1680 Elf_Internal_Rela rela;
1681
1682 /* This symbol has an entry in the global offset table. Set it
1683 up. */
1684 sgot = htab->sgot;
1685 srela = htab->srelgot;
1686 BFD_ASSERT (sgot != NULL && srela != NULL);
1687
1688 rela.r_offset = (sgot->output_section->vma
1689 + sgot->output_offset
1690 + (h->got.offset &~ 1));
1691
1692 /* If this is a -Bsymbolic link, and the symbol is defined
1693 locally, we just want to emit a RELATIVE reloc. Likewise if
1694 the symbol was forced to be local because of a version file.
1695 The entry in the global offset table will already have been
1696 initialized in the relocate_section function. */
0e1862bb 1697 if (bfd_link_pic (info)
84e94c90
NC		 1698 && (info->symbolic
1699 || h->dynindx == -1
1700 || h->forced_local)
1701 && h->def_regular)
1702 {
1703 rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE);
1704 rela.r_addend = (h->root.u.def.value
1705 + h->root.u.def.section->output_section->vma
1706 + h->root.u.def.section->output_offset);
1707 }
1708 else
1709 {
1710 BFD_ASSERT ((h->got.offset & 1) == 0);
1711 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1712 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT);
1713 rela.r_addend = 0;
1714 }
1715
1716 loc = srela->contents;
1717 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1718 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1719 ++srela->reloc_count;
1720 }
1721
1722 if (h->needs_copy)
1723 {
1724 asection *s;
1725 Elf_Internal_Rela rela;
1726
1727 /* This symbols needs a copy reloc. Set it up. */
1728 BFD_ASSERT (h->dynindx != -1
1729 && (h->root.type == bfd_link_hash_defined
1730 || h->root.type == bfd_link_hash_defweak));
1731
3d4d4302 1732 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
84e94c90
NC		 1733 BFD_ASSERT (s != NULL);
1734
1735 rela.r_offset = (h->root.u.def.value
1736 + h->root.u.def.section->output_section->vma
1737 + h->root.u.def.section->output_offset);
1738 rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY);
1739 rela.r_addend = 0;
1740 loc = s->contents;
1741 loc += s->reloc_count * sizeof (Elf32_External_Rela);
1742 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1743 ++s->reloc_count;
1744 }
1745
1746 /* Mark some specially defined symbols as absolute. */
9637f6ef 1747 if (h == htab->root.hdynamic || h == htab->root.hgot)
84e94c90
NC		 1748 sym->st_shndx = SHN_ABS;
1749
1750 return TRUE;
1751}
1752
1753static enum elf_reloc_type_class
7e612e98
AM		 1754lm32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1755 const asection *rel_sec ATTRIBUTE_UNUSED,
1756 const Elf_Internal_Rela *rela)
84e94c90
NC		 1757{
1758 switch ((int) ELF32_R_TYPE (rela->r_info))
1759 {
1760 case R_LM32_RELATIVE: return reloc_class_relative;
1761 case R_LM32_JMP_SLOT: return reloc_class_plt;
1762 case R_LM32_COPY: return reloc_class_copy;
1763 default: return reloc_class_normal;
1764 }
1765}
1766
1767/* Adjust a symbol defined by a dynamic object and referenced by a
1768 regular object. The current definition is in some section of the
1769 dynamic object, but we're not including those sections. We have to
1770 change the definition to something the rest of the link can
1771 understand. */
1772
1773static bfd_boolean
1774lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1775 struct elf_link_hash_entry *h)
1776{
1777 struct elf_lm32_link_hash_table *htab;
1778 struct elf_lm32_link_hash_entry *eh;
1779 struct elf_lm32_dyn_relocs *p;
1780 bfd *dynobj;
1781 asection *s;
1782
1783 dynobj = elf_hash_table (info)->dynobj;
1784
1785 /* Make sure we know what is going on here. */
1786 BFD_ASSERT (dynobj != NULL
1787 && (h->needs_plt
1788 || h->u.weakdef != NULL
1789 || (h->def_dynamic
1790 && h->ref_regular
1791 && !h->def_regular)));
1792
1793 /* If this is a function, put it in the procedure linkage table. We
1794 will fill in the contents of the procedure linkage table later,
1795 when we know the address of the .got section. */
1796 if (h->type == STT_FUNC
1797 || h->needs_plt)
1798 {
0e1862bb 1799 if (! bfd_link_pic (info)
84e94c90
NC		 1800 && !h->def_dynamic
1801 && !h->ref_dynamic
1802 && h->root.type != bfd_link_hash_undefweak
1803 && h->root.type != bfd_link_hash_undefined)
1804 {
1805 /* This case can occur if we saw a PLT reloc in an input
1806 file, but the symbol was never referred to by a dynamic
1807 object. In such a case, we don't actually need to build
1808 a procedure linkage table, and we can just do a PCREL
1809 reloc instead. */
1810 h->plt.offset = (bfd_vma) -1;
1811 h->needs_plt = 0;
1812 }
1813
1814 return TRUE;
1815 }
1816 else
1817 h->plt.offset = (bfd_vma) -1;
1818
1819 /* If this is a weak symbol, and there is a real definition, the
1820 processor independent code will have arranged for us to see the
1821 real definition first, and we can just use the same value. */
1822 if (h->u.weakdef != NULL)
1823 {
1824 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1825 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1826 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1827 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1828 return TRUE;
1829 }
1830
1831 /* This is a reference to a symbol defined by a dynamic object which
1832 is not a function. */
1833
1834 /* If we are creating a shared library, we must presume that the
1835 only references to the symbol are via the global offset table.
1836 For such cases we need not do anything here; the relocations will
1837 be handled correctly by relocate_section. */
0e1862bb 1838 if (bfd_link_pic (info))
84e94c90
NC		 1839 return TRUE;
1840
1841 /* If there are no references to this symbol that do not use the
1842 GOT, we don't need to generate a copy reloc. */
1843 if (!h->non_got_ref)
1844 return TRUE;
1845
1846 /* If -z nocopyreloc was given, we won't generate them either. */
1847 if (info->nocopyreloc)
1848 {
1849 h->non_got_ref = 0;
1850 return TRUE;
1851 }
1852
1853 eh = (struct elf_lm32_link_hash_entry *) h;
1854 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1855 {
1856 s = p->sec->output_section;
1857 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1858 break;
1859 }
1860
1861 /* If we didn't find any dynamic relocs in sections which needs the
1862 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1863 the copy reloc. */
1864 if (p == NULL)
1865 {
1866 h->non_got_ref = 0;
1867 return TRUE;
1868 }
1869
84e94c90
NC		 1870 /* We must allocate the symbol in our .dynbss section, which will
1871 become part of the .bss section of the executable. There will be
1872 an entry for this symbol in the .dynsym section. The dynamic
1873 object will contain position independent code, so all references
1874 from the dynamic object to this symbol will go through the global
1875 offset table. The dynamic linker will use the .dynsym entry to
1876 determine the address it must put in the global offset table, so
1877 both the dynamic object and the regular object will refer to the
1878 same memory location for the variable. */
1879
1880 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1881 if (htab == NULL)
1882 return FALSE;
1883
84e94c90
NC		 1884 s = htab->sdynbss;
1885 BFD_ASSERT (s != NULL);
1886
1887 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1888 to copy the initial value out of the dynamic object and into the
1889 runtime process image. We need to remember the offset into the
1890 .rela.bss section we are going to use. */
1d7e9d18 1891 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
84e94c90
NC		 1892 {
1893 asection *srel;
1894
1895 srel = htab->srelbss;
1896 BFD_ASSERT (srel != NULL);
1897 srel->size += sizeof (Elf32_External_Rela);
1898 h->needs_copy = 1;
1899 }
1900
6cabe1ea 1901 return _bfd_elf_adjust_dynamic_copy (info, h, s);
84e94c90
NC		 1902}
1903
1904/* Allocate space in .plt, .got and associated reloc sections for
1905 dynamic relocs. */
1906
1907static bfd_boolean
1908allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1909{
1910 struct bfd_link_info *info;
1911 struct elf_lm32_link_hash_table *htab;
1912 struct elf_lm32_link_hash_entry *eh;
1913 struct elf_lm32_dyn_relocs *p;
1914
1915 if (h->root.type == bfd_link_hash_indirect)
1916 return TRUE;
1917
84e94c90
NC		 1918 info = (struct bfd_link_info *) inf;
1919 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 1920 if (htab == NULL)
1921 return FALSE;
84e94c90
NC		 1922
1923 eh = (struct elf_lm32_link_hash_entry *) h;
1924
1925 if (htab->root.dynamic_sections_created
1926 && h->plt.refcount > 0)
1927 {
1928 /* Make sure this symbol is output as a dynamic symbol.
1929 Undefined weak syms won't yet be marked as dynamic. */
1930 if (h->dynindx == -1
1931 && !h->forced_local)
1932 {
1933 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1934 return FALSE;
1935 }
1936
0e1862bb 1937 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
84e94c90
NC		 1938 {
1939 asection *s = htab->splt;
1940
1941 /* If this is the first .plt entry, make room for the special
1942 first entry. */
1943 if (s->size == 0)
1944 s->size += PLT_ENTRY_SIZE;
1945
1946 h->plt.offset = s->size;
1947
1948 /* If this symbol is not defined in a regular file, and we are
1949 not generating a shared library, then set the symbol to this
1950 location in the .plt. This is required to make function
1951 pointers compare as equal between the normal executable and
1952 the shared library. */
0e1862bb 1953 if (! bfd_link_pic (info)
84e94c90
NC		 1954 && !h->def_regular)
1955 {
1956 h->root.u.def.section = s;
1957 h->root.u.def.value = h->plt.offset;
1958 }
1959
1960 /* Make room for this entry. */
1961 s->size += PLT_ENTRY_SIZE;
1962
1963 /* We also need to make an entry in the .got.plt section, which
1964 will be placed in the .got section by the linker script. */
1965 htab->sgotplt->size += 4;
1966
1967 /* We also need to make an entry in the .rel.plt section. */
1968 htab->srelplt->size += sizeof (Elf32_External_Rela);
1969 }
1970 else
1971 {
1972 h->plt.offset = (bfd_vma) -1;
1973 h->needs_plt = 0;
1974 }
1975 }
1976 else
1977 {
1978 h->plt.offset = (bfd_vma) -1;
1979 h->needs_plt = 0;
1980 }
1981
1982 if (h->got.refcount > 0)
1983 {
1984 asection *s;
1985 bfd_boolean dyn;
1986
1987 /* Make sure this symbol is output as a dynamic symbol.
1988 Undefined weak syms won't yet be marked as dynamic. */
1989 if (h->dynindx == -1
1990 && !h->forced_local)
1991 {
1992 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1993 return FALSE;
1994 }
1995
1996 s = htab->sgot;
1997
1998 h->got.offset = s->size;
1999 s->size += 4;
2000 dyn = htab->root.dynamic_sections_created;
0e1862bb 2001 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
84e94c90
NC		 2002 htab->srelgot->size += sizeof (Elf32_External_Rela);
2003 }
2004 else
2005 h->got.offset = (bfd_vma) -1;
2006
2007 if (eh->dyn_relocs == NULL)
2008 return TRUE;
2009
2010 /* In the shared -Bsymbolic case, discard space allocated for
2011 dynamic pc-relative relocs against symbols which turn out to be
2012 defined in regular objects. For the normal shared case, discard
2013 space for pc-relative relocs that have become local due to symbol
2014 visibility changes. */
2015
0e1862bb 2016 if (bfd_link_pic (info))
84e94c90
NC		 2017 {
2018 if (h->def_regular
2019 && (h->forced_local
2020 || info->symbolic))
2021 {
2022 struct elf_lm32_dyn_relocs **pp;
2023
2024 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2025 {
2026 p->count -= p->pc_count;
2027 p->pc_count = 0;
2028 if (p->count == 0)
2029 *pp = p->next;
2030 else
2031 pp = &p->next;
2032 }
2033 }
2034
2035 /* Also discard relocs on undefined weak syms with non-default
2036 visibility. */
2037 if (eh->dyn_relocs != NULL
2038 && h->root.type == bfd_link_hash_undefweak)
2039 {
2040 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2041 eh->dyn_relocs = NULL;
2042
2043 /* Make sure undefined weak symbols are output as a dynamic
2044 symbol in PIEs. */
2045 else if (h->dynindx == -1
2046 && !h->forced_local)
2047 {
2048 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2049 return FALSE;
2050 }
2051 }
2052 }
2053 else
2054 {
2055 /* For the non-shared case, discard space for relocs against
2056 symbols which turn out to need copy relocs or are not
2057 dynamic. */
2058
2059 if (!h->non_got_ref
2060 && ((h->def_dynamic
2061 && !h->def_regular)
2062 || (htab->root.dynamic_sections_created
2063 && (h->root.type == bfd_link_hash_undefweak
2064 || h->root.type == bfd_link_hash_undefined))))
2065 {
2066 /* Make sure this symbol is output as a dynamic symbol.
2067 Undefined weak syms won't yet be marked as dynamic. */
2068 if (h->dynindx == -1
2069 && !h->forced_local)
2070 {
2071 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2072 return FALSE;
2073 }
2074
2075 /* If that succeeded, we know we'll be keeping all the
2076 relocs. */
2077 if (h->dynindx != -1)
2078 goto keep;
2079 }
2080
2081 eh->dyn_relocs = NULL;
2082
2083 keep: ;
2084 }
2085
2086 /* Finally, allocate space. */
2087 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2088 {
2089 asection *sreloc = elf_section_data (p->sec)->sreloc;
2090 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2091 }
2092
2093 return TRUE;
2094}
2095
2096/* Find any dynamic relocs that apply to read-only sections. */
2097
2098static bfd_boolean
2099readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2100{
2101 struct elf_lm32_link_hash_entry *eh;
2102 struct elf_lm32_dyn_relocs *p;
2103
84e94c90
NC		 2104 eh = (struct elf_lm32_link_hash_entry *) h;
2105 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2106 {
2107 asection *s = p->sec->output_section;
2108
2109 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2110 {
2111 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2112
2113 info->flags |= DF_TEXTREL;
2114
2115 /* Not an error, just cut short the traversal. */
2116 return FALSE;
2117 }
2118 }
2119 return TRUE;
2120}
2121
2122/* Set the sizes of the dynamic sections. */
2123
2124static bfd_boolean
2125lm32_elf_size_dynamic_sections (bfd *output_bfd,
2126 struct bfd_link_info *info)
2127{
2128 struct elf_lm32_link_hash_table *htab;
2129 bfd *dynobj;
2130 asection *s;
2131 bfd_boolean relocs;
2132 bfd *ibfd;
2133
2134 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2135 if (htab == NULL)
2136 return FALSE;
2137
84e94c90
NC		 2138 dynobj = htab->root.dynobj;
2139 BFD_ASSERT (dynobj != NULL);
2140
2141 if (htab->root.dynamic_sections_created)
2142 {
2143 /* Set the contents of the .interp section to the interpreter. */
0e1862bb 2144 if (bfd_link_executable (info))
84e94c90 2145 {
3d4d4302 2146 s = bfd_get_linker_section (dynobj, ".interp");
84e94c90
NC		 2147 BFD_ASSERT (s != NULL);
2148 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2149 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2150 }
2151 }
2152
2153 /* Set up .got offsets for local syms, and space for local dynamic
2154 relocs. */
c72f2fb2 2155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
84e94c90
NC		 2156 {
2157 bfd_signed_vma *local_got;
2158 bfd_signed_vma *end_local_got;
2159 bfd_size_type locsymcount;
2160 Elf_Internal_Shdr *symtab_hdr;
2161 asection *srel;
2162
2163 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2164 continue;
2165
2166 for (s = ibfd->sections; s != NULL; s = s->next)
2167 {
2168 struct elf_lm32_dyn_relocs *p;
2169
2170 for (p = ((struct elf_lm32_dyn_relocs *)
2171 elf_section_data (s)->local_dynrel);
2172 p != NULL;
2173 p = p->next)
2174 {
2175 if (! bfd_is_abs_section (p->sec)
2176 && bfd_is_abs_section (p->sec->output_section))
2177 {
2178 /* Input section has been discarded, either because
2179 it is a copy of a linkonce section or due to
2180 linker script /DISCARD/, so we'll be discarding
2181 the relocs too. */
2182 }
2183 else if (p->count != 0)
2184 {
2185 srel = elf_section_data (p->sec)->sreloc;
2186 srel->size += p->count * sizeof (Elf32_External_Rela);
2187 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2188 info->flags |= DF_TEXTREL;
2189 }
2190 }
2191 }
2192
2193 local_got = elf_local_got_refcounts (ibfd);
2194 if (!local_got)
2195 continue;
2196
2197 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2198 locsymcount = symtab_hdr->sh_info;
2199 end_local_got = local_got + locsymcount;
2200 s = htab->sgot;
2201 srel = htab->srelgot;
2202 for (; local_got < end_local_got; ++local_got)
2203 {
2204 if (*local_got > 0)
2205 {
2206 *local_got = s->size;
2207 s->size += 4;
0e1862bb 2208 if (bfd_link_pic (info))
84e94c90
NC		 2209 srel->size += sizeof (Elf32_External_Rela);
2210 }
2211 else
2212 *local_got = (bfd_vma) -1;
2213 }
2214 }
2215
2216 /* Allocate global sym .plt and .got entries, and space for global
2217 sym dynamic relocs. */
2218 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2219
2220 /* We now have determined the sizes of the various dynamic sections.
2221 Allocate memory for them. */
2222 relocs = FALSE;
2223 for (s = dynobj->sections; s != NULL; s = s->next)
2224 {
2225 if ((s->flags & SEC_LINKER_CREATED) == 0)
2226 continue;
2227
2228 if (s == htab->splt
2229 || s == htab->sgot
2230 || s == htab->sgotplt
2231 || s == htab->sdynbss)
2232 {
2233 /* Strip this section if we don't need it; see the
2234 comment below. */
2235 }
2236 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2237 {
2238 if (s->size != 0 && s != htab->srelplt)
2239 relocs = TRUE;
2240
2241 /* We use the reloc_count field as a counter if we need
2242 to copy relocs into the output file. */
2243 s->reloc_count = 0;
2244 }
2245 else
2246 /* It's not one of our sections, so don't allocate space. */
2247 continue;
2248
2249 if (s->size == 0)
2250 {
2251 /* If we don't need this section, strip it from the
2252 output file. This is mostly to handle .rela.bss and
2253 .rela.plt. We must create both sections in
2254 create_dynamic_sections, because they must be created
2255 before the linker maps input sections to output
2256 sections. The linker does that before
2257 adjust_dynamic_symbol is called, and it is that
2258 function which decides whether anything needs to go
2259 into these sections. */
2260 s->flags |= SEC_EXCLUDE;
2261 continue;
2262 }
2263
2264 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2265 continue;
2266
2267 /* Allocate memory for the section contents. We use bfd_zalloc
2268 here in case unused entries are not reclaimed before the
2269 section's contents are written out. This should not happen,
2270 but this way if it does, we get a R_LM32_NONE reloc instead
2271 of garbage. */
2272 s->contents = bfd_zalloc (dynobj, s->size);
2273 if (s->contents == NULL)
2274 return FALSE;
2275 }
2276
2277 if (htab->root.dynamic_sections_created)
2278 {
2279 /* Add some entries to the .dynamic section. We fill in the
2280 values later, in lm32_elf_finish_dynamic_sections, but we
2281 must add the entries now so that we get the correct size for
2282 the .dynamic section. The DT_DEBUG entry is filled in by the
2283 dynamic linker and used by the debugger. */
2284#define add_dynamic_entry(TAG, VAL) \
2285 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2286
0e1862bb 2287 if (bfd_link_executable (info))
84e94c90
NC		 2288 {
2289 if (! add_dynamic_entry (DT_DEBUG, 0))
2290 return FALSE;
2291 }
2292
2293 if (htab->splt->size != 0)
2294 {
2295 if (! add_dynamic_entry (DT_PLTGOT, 0)
2296 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2297 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2298 || ! add_dynamic_entry (DT_JMPREL, 0))
2299 return FALSE;
2300 }
2301
2302 if (relocs)
2303 {
2304 if (! add_dynamic_entry (DT_RELA, 0)
2305 || ! add_dynamic_entry (DT_RELASZ, 0)
2306 || ! add_dynamic_entry (DT_RELAENT,
2307 sizeof (Elf32_External_Rela)))
2308 return FALSE;
2309
2310 /* If any dynamic relocs apply to a read-only section,
2311 then we need a DT_TEXTREL entry. */
2312 if ((info->flags & DF_TEXTREL) == 0)
2313 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2314 info);
2315
2316 if ((info->flags & DF_TEXTREL) != 0)
2317 {
2318 if (! add_dynamic_entry (DT_TEXTREL, 0))
2319 return FALSE;
2320 }
2321 }
2322 }
2323#undef add_dynamic_entry
2324
2325 /* Allocate .rofixup section. */
2326 if (IS_FDPIC (output_bfd))
2327 {
2328 struct weak_symbol_list *list_start = NULL, *list_end = NULL;
2329 int rgot_weak_count = 0;
2330 int r32_count = 0;
2331 int rgot_count = 0;
2332 /* Look for deleted sections. */
c72f2fb2 2333 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
84e94c90
NC		 2334 {
2335 for (s = ibfd->sections; s != NULL; s = s->next)
2336 {
2337 if (s->reloc_count)
2338 {
2339 /* Count relocs that need .rofixup entires. */
2340 Elf_Internal_Rela *internal_relocs, *end;
2341 internal_relocs = elf_section_data (s)->relocs;
2342 if (internal_relocs == NULL)
2343 internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE));
2344 if (internal_relocs != NULL)
2345 {
2346 end = internal_relocs + s->reloc_count;
2347 while (internal_relocs < end)
2348 {
2349 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2350 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
2351 unsigned long r_symndx;
2352 struct elf_link_hash_entry *h;
2353
2354 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2355 sym_hashes = elf_sym_hashes (ibfd);
2356 r_symndx = ELF32_R_SYM (internal_relocs->r_info);
2357 h = NULL;
2358 if (r_symndx < symtab_hdr->sh_info)
2359 {
2360 }
2361 else
2362 {
2363 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2364 while (h->root.type == bfd_link_hash_indirect
2365 || h->root.type == bfd_link_hash_warning)
2366 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2367 }
2368
2369 /* Don't generate entries for weak symbols. */
2370 if (!h || (h && h->root.type != bfd_link_hash_undefweak))
2371 {
dbaa2011 2372 if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0))
84e94c90
NC		 2373 {
2374 switch (ELF32_R_TYPE (internal_relocs->r_info))
2375 {
2376 case R_LM32_32:
2377 r32_count++;
2378 break;
2379 case R_LM32_16_GOT:
2380 rgot_count++;
2381 break;
2382 }
2383 }
2384 }
2385 else
2386 {
2387 struct weak_symbol_list *current, *new_entry;
2388 /* Is this symbol already in the list? */
2389 for (current = list_start; current; current = current->next)
2390 {
2391 if (!strcmp (current->name, h->root.root.string))
2392 break;
2393 }
dbaa2011 2394 if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC))
84e94c90
NC		 2395 {
2396 /* Will this have an entry in the GOT. */
2397 if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT)
2398 {
2399 /* Create a new entry. */
2400 new_entry = malloc (sizeof (struct weak_symbol_list));
2401 if (!new_entry)
2402 return FALSE;
2403 new_entry->name = h->root.root.string;
2404 new_entry->next = NULL;
2405 /* Add to list */
2406 if (list_start == NULL)
2407 {
2408 list_start = new_entry;
2409 list_end = new_entry;
2410 }
2411 else
2412 {
2413 list_end->next = new_entry;
2414 list_end = new_entry;
2415 }
2416 /* Increase count of undefined weak symbols in the got. */
2417 rgot_weak_count++;
2418 }
2419 }
2420 }
2421 internal_relocs++;
2422 }
2423 }
2424 else
2425 return FALSE;
2426 }
2427 }
2428 }
2429 /* Free list. */
2430 while (list_start)
2431 {
2432 list_end = list_start->next;
2433 free (list_start);
2434 list_start = list_end;
2435 }
2436
2437 /* Size sections. */
2438 lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4;
2439 if (lm32fdpic_fixup32_section (info)->size == 0)
2440 lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE;
2441 else
2442 {
2443 lm32fdpic_fixup32_section (info)->contents =
2444 bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size);
2445 if (lm32fdpic_fixup32_section (info)->contents == NULL)
2446 return FALSE;
2447 }
2448 }
2449
2450 return TRUE;
2451}
2452
2453/* Create dynamic sections when linking against a dynamic object. */
2454
2455static bfd_boolean
2456lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2457{
2458 struct elf_lm32_link_hash_table *htab;
2459 flagword flags, pltflags;
2460 asection *s;
2461 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2462 int ptralign = 2; /* 32bit */
2463
2464 htab = lm32_elf_hash_table (info);
4dfe6ac6
NC		 2465 if (htab == NULL)
2466 return FALSE;
84e94c90
NC		 2467
2468 /* Make sure we have a GOT - For the case where we have a dynamic object
2469 but none of the relocs in check_relocs */
2470 if (! create_got_section (abfd, info))
2471 return FALSE;
2472 if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL))
2473 {
2474 if (! create_rofixup_section (abfd, info))
2475 return FALSE;
2476 }
2477
2478 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2479 .rel[a].bss sections. */
2480 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2481 | SEC_LINKER_CREATED);
2482
2483 pltflags = flags;
2484 pltflags |= SEC_CODE;
2485 if (bed->plt_not_loaded)
2486 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2487 if (bed->plt_readonly)
2488 pltflags |= SEC_READONLY;
2489
3d4d4302 2490 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
84e94c90
NC		 2491 htab->splt = s;
2492 if (s == NULL
2493 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2494 return FALSE;
2495
2496 if (bed->want_plt_sym)
2497 {
2498 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2499 .plt section. */
2500 struct bfd_link_hash_entry *bh = NULL;
2501 struct elf_link_hash_entry *h;
2502
2503 if (! (_bfd_generic_link_add_one_symbol
2504 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2505 (bfd_vma) 0, NULL, FALSE,
2506 get_elf_backend_data (abfd)->collect, &bh)))
2507 return FALSE;
2508 h = (struct elf_link_hash_entry *) bh;
2509 h->def_regular = 1;
2510 h->type = STT_OBJECT;
2511 htab->root.hplt = h;
2512
0e1862bb 2513 if (bfd_link_pic (info)
84e94c90
NC		 2514 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2515 return FALSE;
2516 }
2517
3d4d4302
AM		 2518 s = bfd_make_section_anyway_with_flags (abfd,
2519 bed->default_use_rela_p
2520 ? ".rela.plt" : ".rel.plt",
2521 flags | SEC_READONLY);
84e94c90
NC		 2522 htab->srelplt = s;
2523 if (s == NULL
2524 || ! bfd_set_section_alignment (abfd, s, ptralign))
2525 return FALSE;
2526
2527 if (htab->sgot == NULL
2528 && ! create_got_section (abfd, info))
2529 return FALSE;
2530
84e94c90
NC		 2531 if (bed->want_dynbss)
2532 {
2533 /* The .dynbss section is a place to put symbols which are defined
2534 by dynamic objects, are referenced by regular objects, and are
2535 not functions. We must allocate space for them in the process
2536 image and use a R_*_COPY reloc to tell the dynamic linker to
2537 initialize them at run time. The linker script puts the .dynbss
2538 section into the .bss section of the final image. */
3d4d4302
AM		 2539 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2540 SEC_ALLOC | SEC_LINKER_CREATED);
84e94c90
NC		 2541 htab->sdynbss = s;
2542 if (s == NULL)
2543 return FALSE;
2544 /* The .rel[a].bss section holds copy relocs. This section is not
2545 normally needed. We need to create it here, though, so that the
2546 linker will map it to an output section. We can't just create it
2547 only if we need it, because we will not know whether we need it
2548 until we have seen all the input files, and the first time the
2549 main linker code calls BFD after examining all the input files
2550 (size_dynamic_sections) the input sections have already been
2551 mapped to the output sections. If the section turns out not to
2552 be needed, we can discard it later. We will never need this
2553 section when generating a shared object, since they do not use
2554 copy relocs. */
0e1862bb 2555 if (! bfd_link_pic (info))
84e94c90 2556 {
3d4d4302
AM		 2557 s = bfd_make_section_anyway_with_flags (abfd,
2558 (bed->default_use_rela_p
2559 ? ".rela.bss" : ".rel.bss"),
2560 flags | SEC_READONLY);
84e94c90
NC		 2561 htab->srelbss = s;
2562 if (s == NULL
2563 || ! bfd_set_section_alignment (abfd, s, ptralign))
2564 return FALSE;
2565 }
2566 }
2567
2568 return TRUE;
2569}
2570
2571/* Copy the extra info we tack onto an elf_link_hash_entry. */
2572
2573static void
2574lm32_elf_copy_indirect_symbol (struct bfd_link_info *info,
2575 struct elf_link_hash_entry *dir,
2576 struct elf_link_hash_entry *ind)
2577{
2578 struct elf_lm32_link_hash_entry * edir;
2579 struct elf_lm32_link_hash_entry * eind;
2580
2581 edir = (struct elf_lm32_link_hash_entry *) dir;
2582 eind = (struct elf_lm32_link_hash_entry *) ind;
2583
2584 if (eind->dyn_relocs != NULL)
2585 {
2586 if (edir->dyn_relocs != NULL)
2587 {
2588 struct elf_lm32_dyn_relocs **pp;
2589 struct elf_lm32_dyn_relocs *p;
2590
2591 /* Add reloc counts against the indirect sym to the direct sym
2592 list. Merge any entries against the same section. */
2593 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2594 {
2595 struct elf_lm32_dyn_relocs *q;
2596
2597 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2598 if (q->sec == p->sec)
2599 {
2600 q->pc_count += p->pc_count;
2601 q->count += p->count;
2602 *pp = p->next;
2603 break;
2604 }
2605 if (q == NULL)
2606 pp = &p->next;
2607 }
2608 *pp = edir->dyn_relocs;
2609 }
2610
2611 edir->dyn_relocs = eind->dyn_relocs;
2612 eind->dyn_relocs = NULL;
2613 }
2614
2615 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2616}
2617
2618static bfd_boolean
04c3a755 2619lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
84e94c90 2620{
0e1862bb 2621 if (!bfd_link_relocatable (info))
84e94c90 2622 {
04c3a755
NS		 2623 if (!bfd_elf_stack_segment_size (output_bfd, info,
2624 "__stacksize", DEFAULT_STACK_SIZE))
2625 return FALSE;
84e94c90 2626
84e94c90 2627 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
84e94c90 2628 if (sec)
04c3a755 2629 sec->size = info->stacksize >= 0 ? info->stacksize : 0;
84e94c90
NC		 2630 }
2631
2632 return TRUE;
2633}
2634
84e94c90
NC		 2635static bfd_boolean
2636lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2637{
2638 unsigned i;
2639
2640 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2641 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2642 return TRUE;
2643
e2349352 2644 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
84e94c90
NC		 2645 return FALSE;
2646
2647 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
2648 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
2649 return TRUE;
2650
2651 /* Copy the stack size. */
2652 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
2653 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
2654 {
2655 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
2656
2657 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
2658 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
2659 {
2660 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
2661
2662 /* Rewrite the phdrs, since we're only called after they were first written. */
2663 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
2664 ->s->sizeof_ehdr, SEEK_SET) != 0
2665 || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
2666 elf_elfheader (obfd)->e_phnum) != 0)
2667 return FALSE;
2668 break;
2669 }
2670
2671 break;
2672 }
2673
2674 return TRUE;
2675}
2676
2677
2678#define ELF_ARCH bfd_arch_lm32
ae95ffa6 2679#define ELF_TARGET_ID LM32_ELF_DATA
84e94c90
NC		 2680#define ELF_MACHINE_CODE EM_LATTICEMICO32
2681#define ELF_MAXPAGESIZE 0x1000
2682
6d00b590 2683#define TARGET_BIG_SYM lm32_elf32_vec
84e94c90
NC		 2684#define TARGET_BIG_NAME "elf32-lm32"
2685
2686#define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2687#define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2688#define elf_info_to_howto lm32_info_to_howto_rela
2689#define elf_info_to_howto_rel 0
2690#define elf_backend_rela_normal 1
2691#define elf_backend_object_p lm32_elf_object_p
2692#define elf_backend_final_write_processing lm32_elf_final_write_processing
04c3a755 2693#define elf_backend_stack_align 8
84e94c90
NC		 2694#define elf_backend_can_gc_sections 1
2695#define elf_backend_can_refcount 1
2696#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2697#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2698#define elf_backend_plt_readonly 1
2699#define elf_backend_want_got_plt 1
2700#define elf_backend_want_plt_sym 0
2701#define elf_backend_got_header_size 12
2702#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2703#define elf_backend_check_relocs lm32_elf_check_relocs
2704#define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2705#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2706#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2707#define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2708#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2709#define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2710#define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2711#define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2712#define elf_backend_relocate_section lm32_elf_relocate_section
2713
2714#include "elf32-target.h"
2715
2716#undef ELF_MAXPAGESIZE
2717#define ELF_MAXPAGESIZE 0x4000
2718
2719
2720#undef TARGET_BIG_SYM
6d00b590 2721#define TARGET_BIG_SYM lm32_elf32_fdpic_vec
84e94c90
NC		 2722#undef TARGET_BIG_NAME
2723#define TARGET_BIG_NAME "elf32-lm32fdpic"
2724#undef elf32_bed
2725#define elf32_bed elf32_lm32fdpic_bed
2726
2727#undef elf_backend_always_size_sections
2728#define elf_backend_always_size_sections lm32_elf_always_size_sections
84e94c90
NC		 2729#undef bfd_elf32_bfd_copy_private_bfd_data
2730#define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2731
2732#include "elf32-target.h"
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