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[binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "bfd.h"
29 #include "sysdep.h"
30 #include "bfdlink.h"
31 #include "libbfd.h"
32 #include "elf-bfd.h"
33 #include "elf/ppc.h"
34 #include "elf32-ppc.h"
35
36 /* RELA relocations are used here. */
37
38 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc_elf_unhandled_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42
43 /* Branch prediction bit for branch taken relocs. */
44 #define BRANCH_PREDICT_BIT 0x200000
45 /* Mask to set RA in memory instructions. */
46 #define RA_REGISTER_MASK 0x001f0000
47 /* Value to shift register by to insert RA. */
48 #define RA_REGISTER_SHIFT 16
49
50 /* The name of the dynamic interpreter. This is put in the .interp
51 section. */
52 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55 #define PLT_ENTRY_SIZE 12
56 /* The initial size of the plt reserved for the dynamic linker. */
57 #define PLT_INITIAL_ENTRY_SIZE 72
58 /* The size of the gap between entries in the PLT. */
59 #define PLT_SLOT_SIZE 8
60 /* The number of single-slot PLT entries (the rest use two slots). */
61 #define PLT_NUM_SINGLE_ENTRIES 8192
62
63 /* Some nop instructions. */
64 #define NOP 0x60000000
65 #define CROR_151515 0x4def7b82
66 #define CROR_313131 0x4ffffb82
67
68 /* Offset of tp and dtp pointers from start of TLS block. */
69 #define TP_OFFSET 0x7000
70 #define DTP_OFFSET 0x8000
71
72 \f
73 /* Enumeration to specify the special section. */
74 enum elf_linker_section_enum
75 {
76 LINKER_SECTION_SDATA,
77 LINKER_SECTION_SDATA2
78 };
79
80 /* Sections created by the linker. */
81
82 typedef struct elf_linker_section
83 {
84 /* pointer to the section */
85 asection *section;
86 /* pointer to the relocations needed for this section */
87 asection *rel_section;
88 /* pointer to the created symbol hash value */
89 struct elf_link_hash_entry *sym_hash;
90 /* offset of symbol from beginning of section */
91 bfd_vma sym_offset;
92 } elf_linker_section_t;
93
94 /* Linked list of allocated pointer entries. This hangs off of the
95 symbol lists, and provides allows us to return different pointers,
96 based on different addend's. */
97
98 typedef struct elf_linker_section_pointers
99 {
100 /* next allocated pointer for this symbol */
101 struct elf_linker_section_pointers *next;
102 /* offset of pointer from beginning of section */
103 bfd_vma offset;
104 /* addend used */
105 bfd_vma addend;
106 /* which linker section this is */
107 elf_linker_section_t *lsect;
108 /* whether address was written yet */
109 bfd_boolean written_address_p;
110 } elf_linker_section_pointers_t;
111
112 struct ppc_elf_obj_tdata
113 {
114 struct elf_obj_tdata elf;
115
116 /* A mapping from local symbols to offsets into the various linker
117 sections added. This is index by the symbol index. */
118 elf_linker_section_pointers_t **linker_section_pointers;
119 };
120
121 #define ppc_elf_tdata(bfd) \
122 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
123
124 #define elf_local_ptr_offsets(bfd) \
125 (ppc_elf_tdata (bfd)->linker_section_pointers)
126
127 /* Override the generic function because we store some extras. */
128
129 static bfd_boolean
130 ppc_elf_mkobject (bfd *abfd)
131 {
132 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
133 abfd->tdata.any = bfd_zalloc (abfd, amt);
134 if (abfd->tdata.any == NULL)
135 return FALSE;
136 return TRUE;
137 }
138
139 /* The PPC linker needs to keep track of the number of relocs that it
140 decides to copy as dynamic relocs in check_relocs for each symbol.
141 This is so that it can later discard them if they are found to be
142 unnecessary. We store the information in a field extending the
143 regular ELF linker hash table. */
144
145 struct ppc_elf_dyn_relocs
146 {
147 struct ppc_elf_dyn_relocs *next;
148
149 /* The input section of the reloc. */
150 asection *sec;
151
152 /* Total number of relocs copied for the input section. */
153 bfd_size_type count;
154
155 /* Number of pc-relative relocs copied for the input section. */
156 bfd_size_type pc_count;
157 };
158
159 /* PPC ELF linker hash entry. */
160
161 struct ppc_elf_link_hash_entry
162 {
163 struct elf_link_hash_entry elf;
164
165 /* If this symbol is used in the linker created sections, the processor
166 specific backend uses this field to map the field into the offset
167 from the beginning of the section. */
168 elf_linker_section_pointers_t *linker_section_pointer;
169
170 /* Track dynamic relocs copied for this symbol. */
171 struct ppc_elf_dyn_relocs *dyn_relocs;
172
173 /* Contexts in which symbol is used in the GOT (or TOC).
174 TLS_GD .. TLS_TLS bits are or'd into the mask as the
175 corresponding relocs are encountered during check_relocs.
176 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
177 indicate the corresponding GOT entry type is not needed. */
178 #define TLS_GD 1 /* GD reloc. */
179 #define TLS_LD 2 /* LD reloc. */
180 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
181 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
182 #define TLS_TLS 16 /* Any TLS reloc. */
183 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
184 char tls_mask;
185 };
186
187 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
188
189 /* PPC ELF linker hash table. */
190
191 struct ppc_elf_link_hash_table
192 {
193 struct elf_link_hash_table elf;
194
195 /* Short-cuts to get to dynamic linker sections. */
196 asection *got;
197 asection *relgot;
198 asection *plt;
199 asection *relplt;
200 asection *dynbss;
201 asection *relbss;
202 asection *dynsbss;
203 asection *relsbss;
204 elf_linker_section_t *sdata;
205 elf_linker_section_t *sdata2;
206 asection *sbss;
207
208 /* Shortcut to .__tls_get_addr. */
209 struct elf_link_hash_entry *tls_get_addr;
210
211 /* TLS local dynamic got entry handling. */
212 union {
213 bfd_signed_vma refcount;
214 bfd_vma offset;
215 } tlsld_got;
216
217 /* Small local sym to section mapping cache. */
218 struct sym_sec_cache sym_sec;
219 };
220
221 /* Get the PPC ELF linker hash table from a link_info structure. */
222
223 #define ppc_elf_hash_table(p) \
224 ((struct ppc_elf_link_hash_table *) (p)->hash)
225
226 /* Create an entry in a PPC ELF linker hash table. */
227
228 static struct bfd_hash_entry *
229 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
230 struct bfd_hash_table *table,
231 const char *string)
232 {
233 /* Allocate the structure if it has not already been allocated by a
234 subclass. */
235 if (entry == NULL)
236 {
237 entry = bfd_hash_allocate (table,
238 sizeof (struct ppc_elf_link_hash_entry));
239 if (entry == NULL)
240 return entry;
241 }
242
243 /* Call the allocation method of the superclass. */
244 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
245 if (entry != NULL)
246 {
247 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
248 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
249 ppc_elf_hash_entry (entry)->tls_mask = 0;
250 }
251
252 return entry;
253 }
254
255 /* Create a PPC ELF linker hash table. */
256
257 static struct bfd_link_hash_table *
258 ppc_elf_link_hash_table_create (bfd *abfd)
259 {
260 struct ppc_elf_link_hash_table *ret;
261
262 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
263 if (ret == NULL)
264 return NULL;
265
266 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
267 ppc_elf_link_hash_newfunc))
268 {
269 free (ret);
270 return NULL;
271 }
272
273 return &ret->elf.root;
274 }
275
276 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
277 copying dynamic variables from a shared lib into an app's dynbss
278 section, and instead use a dynamic relocation to point into the
279 shared lib. */
280 #define ELIMINATE_COPY_RELOCS 1
281
282 /* Copy the extra info we tack onto an elf_link_hash_entry. */
283
284 static void
285 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
286 struct elf_link_hash_entry *dir,
287 struct elf_link_hash_entry *ind)
288 {
289 struct ppc_elf_link_hash_entry *edir, *eind;
290
291 edir = (struct ppc_elf_link_hash_entry *) dir;
292 eind = (struct ppc_elf_link_hash_entry *) ind;
293
294 if (eind->dyn_relocs != NULL)
295 {
296 if (edir->dyn_relocs != NULL)
297 {
298 struct ppc_elf_dyn_relocs **pp;
299 struct ppc_elf_dyn_relocs *p;
300
301 if (ind->root.type == bfd_link_hash_indirect)
302 abort ();
303
304 /* Add reloc counts against the weak sym to the strong sym
305 list. Merge any entries against the same section. */
306 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
307 {
308 struct ppc_elf_dyn_relocs *q;
309
310 for (q = edir->dyn_relocs; q != NULL; q = q->next)
311 if (q->sec == p->sec)
312 {
313 q->pc_count += p->pc_count;
314 q->count += p->count;
315 *pp = p->next;
316 break;
317 }
318 if (q == NULL)
319 pp = &p->next;
320 }
321 *pp = edir->dyn_relocs;
322 }
323
324 edir->dyn_relocs = eind->dyn_relocs;
325 eind->dyn_relocs = NULL;
326 }
327
328 edir->tls_mask |= eind->tls_mask;
329
330 if (ELIMINATE_COPY_RELOCS
331 && ind->root.type != bfd_link_hash_indirect
332 && dir->dynamic_adjusted)
333 {
334 /* If called to transfer flags for a weakdef during processing
335 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
336 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
337 dir->ref_dynamic |= ind->ref_dynamic;
338 dir->ref_regular |= ind->ref_regular;
339 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
340 dir->needs_plt |= ind->needs_plt;
341 }
342 else
343 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
344 }
345 \f
346 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
347
348 static reloc_howto_type ppc_elf_howto_raw[] = {
349 /* This reloc does nothing. */
350 HOWTO (R_PPC_NONE, /* type */
351 0, /* rightshift */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
353 32, /* bitsize */
354 FALSE, /* pc_relative */
355 0, /* bitpos */
356 complain_overflow_bitfield, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC_NONE", /* name */
359 FALSE, /* partial_inplace */
360 0, /* src_mask */
361 0, /* dst_mask */
362 FALSE), /* pcrel_offset */
363
364 /* A standard 32 bit relocation. */
365 HOWTO (R_PPC_ADDR32, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 32, /* bitsize */
369 FALSE, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_bitfield, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC_ADDR32", /* name */
374 FALSE, /* partial_inplace */
375 0, /* src_mask */
376 0xffffffff, /* dst_mask */
377 FALSE), /* pcrel_offset */
378
379 /* An absolute 26 bit branch; the lower two bits must be zero.
380 FIXME: we don't check that, we just clear them. */
381 HOWTO (R_PPC_ADDR24, /* type */
382 0, /* rightshift */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
384 26, /* bitsize */
385 FALSE, /* pc_relative */
386 0, /* bitpos */
387 complain_overflow_bitfield, /* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_PPC_ADDR24", /* name */
390 FALSE, /* partial_inplace */
391 0, /* src_mask */
392 0x3fffffc, /* dst_mask */
393 FALSE), /* pcrel_offset */
394
395 /* A standard 16 bit relocation. */
396 HOWTO (R_PPC_ADDR16, /* type */
397 0, /* rightshift */
398 1, /* size (0 = byte, 1 = short, 2 = long) */
399 16, /* bitsize */
400 FALSE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_bitfield, /* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_PPC_ADDR16", /* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 0xffff, /* dst_mask */
408 FALSE), /* pcrel_offset */
409
410 /* A 16 bit relocation without overflow. */
411 HOWTO (R_PPC_ADDR16_LO, /* type */
412 0, /* rightshift */
413 1, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
415 FALSE, /* pc_relative */
416 0, /* bitpos */
417 complain_overflow_dont,/* complain_on_overflow */
418 bfd_elf_generic_reloc, /* special_function */
419 "R_PPC_ADDR16_LO", /* name */
420 FALSE, /* partial_inplace */
421 0, /* src_mask */
422 0xffff, /* dst_mask */
423 FALSE), /* pcrel_offset */
424
425 /* The high order 16 bits of an address. */
426 HOWTO (R_PPC_ADDR16_HI, /* type */
427 16, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 bfd_elf_generic_reloc, /* special_function */
434 "R_PPC_ADDR16_HI", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* The high order 16 bits of an address, plus 1 if the contents of
441 the low 16 bits, treated as a signed number, is negative. */
442 HOWTO (R_PPC_ADDR16_HA, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_addr16_ha_reloc, /* special_function */
450 "R_PPC_ADDR16_HA", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* An absolute 16 bit branch; the lower two bits must be zero.
457 FIXME: we don't check that, we just clear them. */
458 HOWTO (R_PPC_ADDR14, /* type */
459 0, /* rightshift */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_bitfield, /* complain_on_overflow */
465 bfd_elf_generic_reloc, /* special_function */
466 "R_PPC_ADDR14", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xfffc, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* An absolute 16 bit branch, for which bit 10 should be set to
473 indicate that the branch is expected to be taken. The lower two
474 bits must be zero. */
475 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_PPC_ADDR14_BRTAKEN",/* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0xfffc, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* An absolute 16 bit branch, for which bit 10 should be set to
490 indicate that the branch is not expected to be taken. The lower
491 two bits must be zero. */
492 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 16, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_ADDR14_BRNTAKEN",/* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xfffc, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* A relative 26 bit branch; the lower two bits must be zero. */
507 HOWTO (R_PPC_REL24, /* type */
508 0, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 26, /* bitsize */
511 TRUE, /* pc_relative */
512 0, /* bitpos */
513 complain_overflow_signed, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_REL24", /* name */
516 FALSE, /* partial_inplace */
517 0, /* src_mask */
518 0x3fffffc, /* dst_mask */
519 TRUE), /* pcrel_offset */
520
521 /* A relative 16 bit branch; the lower two bits must be zero. */
522 HOWTO (R_PPC_REL14, /* type */
523 0, /* rightshift */
524 2, /* size (0 = byte, 1 = short, 2 = long) */
525 16, /* bitsize */
526 TRUE, /* pc_relative */
527 0, /* bitpos */
528 complain_overflow_signed, /* complain_on_overflow */
529 bfd_elf_generic_reloc, /* special_function */
530 "R_PPC_REL14", /* name */
531 FALSE, /* partial_inplace */
532 0, /* src_mask */
533 0xfffc, /* dst_mask */
534 TRUE), /* pcrel_offset */
535
536 /* A relative 16 bit branch. Bit 10 should be set to indicate that
537 the branch is expected to be taken. The lower two bits must be
538 zero. */
539 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
540 0, /* rightshift */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
542 16, /* bitsize */
543 TRUE, /* pc_relative */
544 0, /* bitpos */
545 complain_overflow_signed, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_PPC_REL14_BRTAKEN", /* name */
548 FALSE, /* partial_inplace */
549 0, /* src_mask */
550 0xfffc, /* dst_mask */
551 TRUE), /* pcrel_offset */
552
553 /* A relative 16 bit branch. Bit 10 should be set to indicate that
554 the branch is not expected to be taken. The lower two bits must
555 be zero. */
556 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
557 0, /* rightshift */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
559 16, /* bitsize */
560 TRUE, /* pc_relative */
561 0, /* bitpos */
562 complain_overflow_signed, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_REL14_BRNTAKEN",/* name */
565 FALSE, /* partial_inplace */
566 0, /* src_mask */
567 0xfffc, /* dst_mask */
568 TRUE), /* pcrel_offset */
569
570 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
571 symbol. */
572 HOWTO (R_PPC_GOT16, /* type */
573 0, /* rightshift */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
575 16, /* bitsize */
576 FALSE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_signed, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_GOT16", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 0xffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
585
586 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
587 the symbol. */
588 HOWTO (R_PPC_GOT16_LO, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_dont, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_GOT16_LO", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
603 the symbol. */
604 HOWTO (R_PPC_GOT16_HI, /* type */
605 16, /* rightshift */
606 1, /* size (0 = byte, 1 = short, 2 = long) */
607 16, /* bitsize */
608 FALSE, /* pc_relative */
609 0, /* bitpos */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_PPC_GOT16_HI", /* name */
613 FALSE, /* partial_inplace */
614 0, /* src_mask */
615 0xffff, /* dst_mask */
616 FALSE), /* pcrel_offset */
617
618 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
619 the symbol. */
620 HOWTO (R_PPC_GOT16_HA, /* type */
621 16, /* rightshift */
622 1, /* size (0 = byte, 1 = short, 2 = long) */
623 16, /* bitsize */
624 FALSE, /* pc_relative */
625 0, /* bitpos */
626 complain_overflow_bitfield, /* complain_on_overflow */
627 ppc_elf_addr16_ha_reloc, /* special_function */
628 "R_PPC_GOT16_HA", /* name */
629 FALSE, /* partial_inplace */
630 0, /* src_mask */
631 0xffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
633
634 /* Like R_PPC_REL24, but referring to the procedure linkage table
635 entry for the symbol. */
636 HOWTO (R_PPC_PLTREL24, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 26, /* bitsize */
640 TRUE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC_PLTREL24", /* name */
645 FALSE, /* partial_inplace */
646 0, /* src_mask */
647 0x3fffffc, /* dst_mask */
648 TRUE), /* pcrel_offset */
649
650 /* This is used only by the dynamic linker. The symbol should exist
651 both in the object being run and in some shared library. The
652 dynamic linker copies the data addressed by the symbol from the
653 shared library into the object, because the object being
654 run has to have the data at some particular address. */
655 HOWTO (R_PPC_COPY, /* type */
656 0, /* rightshift */
657 2, /* size (0 = byte, 1 = short, 2 = long) */
658 32, /* bitsize */
659 FALSE, /* pc_relative */
660 0, /* bitpos */
661 complain_overflow_bitfield, /* complain_on_overflow */
662 bfd_elf_generic_reloc, /* special_function */
663 "R_PPC_COPY", /* name */
664 FALSE, /* partial_inplace */
665 0, /* src_mask */
666 0, /* dst_mask */
667 FALSE), /* pcrel_offset */
668
669 /* Like R_PPC_ADDR32, but used when setting global offset table
670 entries. */
671 HOWTO (R_PPC_GLOB_DAT, /* type */
672 0, /* rightshift */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
674 32, /* bitsize */
675 FALSE, /* pc_relative */
676 0, /* bitpos */
677 complain_overflow_bitfield, /* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_PPC_GLOB_DAT", /* name */
680 FALSE, /* partial_inplace */
681 0, /* src_mask */
682 0xffffffff, /* dst_mask */
683 FALSE), /* pcrel_offset */
684
685 /* Marks a procedure linkage table entry for a symbol. */
686 HOWTO (R_PPC_JMP_SLOT, /* type */
687 0, /* rightshift */
688 2, /* size (0 = byte, 1 = short, 2 = long) */
689 32, /* bitsize */
690 FALSE, /* pc_relative */
691 0, /* bitpos */
692 complain_overflow_bitfield, /* complain_on_overflow */
693 bfd_elf_generic_reloc, /* special_function */
694 "R_PPC_JMP_SLOT", /* name */
695 FALSE, /* partial_inplace */
696 0, /* src_mask */
697 0, /* dst_mask */
698 FALSE), /* pcrel_offset */
699
700 /* Used only by the dynamic linker. When the object is run, this
701 longword is set to the load address of the object, plus the
702 addend. */
703 HOWTO (R_PPC_RELATIVE, /* type */
704 0, /* rightshift */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
706 32, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield, /* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_PPC_RELATIVE", /* name */
712 FALSE, /* partial_inplace */
713 0, /* src_mask */
714 0xffffffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 /* Like R_PPC_REL24, but uses the value of the symbol within the
718 object rather than the final value. Normally used for
719 _GLOBAL_OFFSET_TABLE_. */
720 HOWTO (R_PPC_LOCAL24PC, /* type */
721 0, /* rightshift */
722 2, /* size (0 = byte, 1 = short, 2 = long) */
723 26, /* bitsize */
724 TRUE, /* pc_relative */
725 0, /* bitpos */
726 complain_overflow_signed, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_LOCAL24PC", /* name */
729 FALSE, /* partial_inplace */
730 0, /* src_mask */
731 0x3fffffc, /* dst_mask */
732 TRUE), /* pcrel_offset */
733
734 /* Like R_PPC_ADDR32, but may be unaligned. */
735 HOWTO (R_PPC_UADDR32, /* type */
736 0, /* rightshift */
737 2, /* size (0 = byte, 1 = short, 2 = long) */
738 32, /* bitsize */
739 FALSE, /* pc_relative */
740 0, /* bitpos */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC_UADDR32", /* name */
744 FALSE, /* partial_inplace */
745 0, /* src_mask */
746 0xffffffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
748
749 /* Like R_PPC_ADDR16, but may be unaligned. */
750 HOWTO (R_PPC_UADDR16, /* type */
751 0, /* rightshift */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
753 16, /* bitsize */
754 FALSE, /* pc_relative */
755 0, /* bitpos */
756 complain_overflow_bitfield, /* complain_on_overflow */
757 bfd_elf_generic_reloc, /* special_function */
758 "R_PPC_UADDR16", /* name */
759 FALSE, /* partial_inplace */
760 0, /* src_mask */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
763
764 /* 32-bit PC relative */
765 HOWTO (R_PPC_REL32, /* type */
766 0, /* rightshift */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
768 32, /* bitsize */
769 TRUE, /* pc_relative */
770 0, /* bitpos */
771 complain_overflow_bitfield, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_PPC_REL32", /* name */
774 FALSE, /* partial_inplace */
775 0, /* src_mask */
776 0xffffffff, /* dst_mask */
777 TRUE), /* pcrel_offset */
778
779 /* 32-bit relocation to the symbol's procedure linkage table.
780 FIXME: not supported. */
781 HOWTO (R_PPC_PLT32, /* type */
782 0, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 32, /* bitsize */
785 FALSE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_bitfield, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC_PLT32", /* name */
790 FALSE, /* partial_inplace */
791 0, /* src_mask */
792 0, /* dst_mask */
793 FALSE), /* pcrel_offset */
794
795 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
796 FIXME: not supported. */
797 HOWTO (R_PPC_PLTREL32, /* type */
798 0, /* rightshift */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
800 32, /* bitsize */
801 TRUE, /* pc_relative */
802 0, /* bitpos */
803 complain_overflow_bitfield, /* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_PPC_PLTREL32", /* name */
806 FALSE, /* partial_inplace */
807 0, /* src_mask */
808 0, /* dst_mask */
809 TRUE), /* pcrel_offset */
810
811 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
812 the symbol. */
813 HOWTO (R_PPC_PLT16_LO, /* type */
814 0, /* rightshift */
815 1, /* size (0 = byte, 1 = short, 2 = long) */
816 16, /* bitsize */
817 FALSE, /* pc_relative */
818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC_PLT16_LO", /* name */
822 FALSE, /* partial_inplace */
823 0, /* src_mask */
824 0xffff, /* dst_mask */
825 FALSE), /* pcrel_offset */
826
827 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
828 the symbol. */
829 HOWTO (R_PPC_PLT16_HI, /* type */
830 16, /* rightshift */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
832 16, /* bitsize */
833 FALSE, /* pc_relative */
834 0, /* bitpos */
835 complain_overflow_bitfield, /* complain_on_overflow */
836 bfd_elf_generic_reloc, /* special_function */
837 "R_PPC_PLT16_HI", /* name */
838 FALSE, /* partial_inplace */
839 0, /* src_mask */
840 0xffff, /* dst_mask */
841 FALSE), /* pcrel_offset */
842
843 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
844 the symbol. */
845 HOWTO (R_PPC_PLT16_HA, /* type */
846 16, /* rightshift */
847 1, /* size (0 = byte, 1 = short, 2 = long) */
848 16, /* bitsize */
849 FALSE, /* pc_relative */
850 0, /* bitpos */
851 complain_overflow_bitfield, /* complain_on_overflow */
852 ppc_elf_addr16_ha_reloc, /* special_function */
853 "R_PPC_PLT16_HA", /* name */
854 FALSE, /* partial_inplace */
855 0, /* src_mask */
856 0xffff, /* dst_mask */
857 FALSE), /* pcrel_offset */
858
859 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
860 small data items. */
861 HOWTO (R_PPC_SDAREL16, /* type */
862 0, /* rightshift */
863 1, /* size (0 = byte, 1 = short, 2 = long) */
864 16, /* bitsize */
865 FALSE, /* pc_relative */
866 0, /* bitpos */
867 complain_overflow_signed, /* complain_on_overflow */
868 bfd_elf_generic_reloc, /* special_function */
869 "R_PPC_SDAREL16", /* name */
870 FALSE, /* partial_inplace */
871 0, /* src_mask */
872 0xffff, /* dst_mask */
873 FALSE), /* pcrel_offset */
874
875 /* 16-bit section relative relocation. */
876 HOWTO (R_PPC_SECTOFF, /* type */
877 0, /* rightshift */
878 1, /* size (0 = byte, 1 = short, 2 = long) */
879 16, /* bitsize */
880 FALSE, /* pc_relative */
881 0, /* bitpos */
882 complain_overflow_bitfield, /* complain_on_overflow */
883 bfd_elf_generic_reloc, /* special_function */
884 "R_PPC_SECTOFF", /* name */
885 FALSE, /* partial_inplace */
886 0, /* src_mask */
887 0xffff, /* dst_mask */
888 FALSE), /* pcrel_offset */
889
890 /* 16-bit lower half section relative relocation. */
891 HOWTO (R_PPC_SECTOFF_LO, /* type */
892 0, /* rightshift */
893 1, /* size (0 = byte, 1 = short, 2 = long) */
894 16, /* bitsize */
895 FALSE, /* pc_relative */
896 0, /* bitpos */
897 complain_overflow_dont, /* complain_on_overflow */
898 bfd_elf_generic_reloc, /* special_function */
899 "R_PPC_SECTOFF_LO", /* name */
900 FALSE, /* partial_inplace */
901 0, /* src_mask */
902 0xffff, /* dst_mask */
903 FALSE), /* pcrel_offset */
904
905 /* 16-bit upper half section relative relocation. */
906 HOWTO (R_PPC_SECTOFF_HI, /* type */
907 16, /* rightshift */
908 1, /* size (0 = byte, 1 = short, 2 = long) */
909 16, /* bitsize */
910 FALSE, /* pc_relative */
911 0, /* bitpos */
912 complain_overflow_bitfield, /* complain_on_overflow */
913 bfd_elf_generic_reloc, /* special_function */
914 "R_PPC_SECTOFF_HI", /* name */
915 FALSE, /* partial_inplace */
916 0, /* src_mask */
917 0xffff, /* dst_mask */
918 FALSE), /* pcrel_offset */
919
920 /* 16-bit upper half adjusted section relative relocation. */
921 HOWTO (R_PPC_SECTOFF_HA, /* type */
922 16, /* rightshift */
923 1, /* size (0 = byte, 1 = short, 2 = long) */
924 16, /* bitsize */
925 FALSE, /* pc_relative */
926 0, /* bitpos */
927 complain_overflow_bitfield, /* complain_on_overflow */
928 ppc_elf_addr16_ha_reloc, /* special_function */
929 "R_PPC_SECTOFF_HA", /* name */
930 FALSE, /* partial_inplace */
931 0, /* src_mask */
932 0xffff, /* dst_mask */
933 FALSE), /* pcrel_offset */
934
935 /* Marker reloc for TLS. */
936 HOWTO (R_PPC_TLS,
937 0, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 32, /* bitsize */
940 FALSE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_dont, /* complain_on_overflow */
943 bfd_elf_generic_reloc, /* special_function */
944 "R_PPC_TLS", /* name */
945 FALSE, /* partial_inplace */
946 0, /* src_mask */
947 0, /* dst_mask */
948 FALSE), /* pcrel_offset */
949
950 /* Computes the load module index of the load module that contains the
951 definition of its TLS sym. */
952 HOWTO (R_PPC_DTPMOD32,
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 32, /* bitsize */
956 FALSE, /* pc_relative */
957 0, /* bitpos */
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc_elf_unhandled_reloc, /* special_function */
960 "R_PPC_DTPMOD32", /* name */
961 FALSE, /* partial_inplace */
962 0, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
965
966 /* Computes a dtv-relative displacement, the difference between the value
967 of sym+add and the base address of the thread-local storage block that
968 contains the definition of sym, minus 0x8000. */
969 HOWTO (R_PPC_DTPREL32,
970 0, /* rightshift */
971 2, /* size (0 = byte, 1 = short, 2 = long) */
972 32, /* bitsize */
973 FALSE, /* pc_relative */
974 0, /* bitpos */
975 complain_overflow_dont, /* complain_on_overflow */
976 ppc_elf_unhandled_reloc, /* special_function */
977 "R_PPC_DTPREL32", /* name */
978 FALSE, /* partial_inplace */
979 0, /* src_mask */
980 0xffffffff, /* dst_mask */
981 FALSE), /* pcrel_offset */
982
983 /* A 16 bit dtprel reloc. */
984 HOWTO (R_PPC_DTPREL16,
985 0, /* rightshift */
986 1, /* size (0 = byte, 1 = short, 2 = long) */
987 16, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_signed, /* complain_on_overflow */
991 ppc_elf_unhandled_reloc, /* special_function */
992 "R_PPC_DTPREL16", /* name */
993 FALSE, /* partial_inplace */
994 0, /* src_mask */
995 0xffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
997
998 /* Like DTPREL16, but no overflow. */
999 HOWTO (R_PPC_DTPREL16_LO,
1000 0, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 16, /* bitsize */
1003 FALSE, /* pc_relative */
1004 0, /* bitpos */
1005 complain_overflow_dont, /* complain_on_overflow */
1006 ppc_elf_unhandled_reloc, /* special_function */
1007 "R_PPC_DTPREL16_LO", /* name */
1008 FALSE, /* partial_inplace */
1009 0, /* src_mask */
1010 0xffff, /* dst_mask */
1011 FALSE), /* pcrel_offset */
1012
1013 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1014 HOWTO (R_PPC_DTPREL16_HI,
1015 16, /* rightshift */
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 16, /* bitsize */
1018 FALSE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_dont, /* complain_on_overflow */
1021 ppc_elf_unhandled_reloc, /* special_function */
1022 "R_PPC_DTPREL16_HI", /* name */
1023 FALSE, /* partial_inplace */
1024 0, /* src_mask */
1025 0xffff, /* dst_mask */
1026 FALSE), /* pcrel_offset */
1027
1028 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1029 HOWTO (R_PPC_DTPREL16_HA,
1030 16, /* rightshift */
1031 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 ppc_elf_unhandled_reloc, /* special_function */
1037 "R_PPC_DTPREL16_HA", /* name */
1038 FALSE, /* partial_inplace */
1039 0, /* src_mask */
1040 0xffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Computes a tp-relative displacement, the difference between the value of
1044 sym+add and the value of the thread pointer (r13). */
1045 HOWTO (R_PPC_TPREL32,
1046 0, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 32, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 ppc_elf_unhandled_reloc, /* special_function */
1053 "R_PPC_TPREL32", /* name */
1054 FALSE, /* partial_inplace */
1055 0, /* src_mask */
1056 0xffffffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* A 16 bit tprel reloc. */
1060 HOWTO (R_PPC_TPREL16,
1061 0, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_signed, /* complain_on_overflow */
1067 ppc_elf_unhandled_reloc, /* special_function */
1068 "R_PPC_TPREL16", /* name */
1069 FALSE, /* partial_inplace */
1070 0, /* src_mask */
1071 0xffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
1074 /* Like TPREL16, but no overflow. */
1075 HOWTO (R_PPC_TPREL16_LO,
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_dont, /* complain_on_overflow */
1082 ppc_elf_unhandled_reloc, /* special_function */
1083 "R_PPC_TPREL16_LO", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xffff, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1088
1089 /* Like TPREL16_LO, but next higher group of 16 bits. */
1090 HOWTO (R_PPC_TPREL16_HI,
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc_elf_unhandled_reloc, /* special_function */
1098 "R_PPC_TPREL16_HI", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xffff, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
1104 /* Like TPREL16_HI, but adjust for low 16 bits. */
1105 HOWTO (R_PPC_TPREL16_HA,
1106 16, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc_elf_unhandled_reloc, /* special_function */
1113 "R_PPC_TPREL16_HA", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xffff, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1118
1119 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1120 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1121 to the first entry. */
1122 HOWTO (R_PPC_GOT_TLSGD16,
1123 0, /* rightshift */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 16, /* bitsize */
1126 FALSE, /* pc_relative */
1127 0, /* bitpos */
1128 complain_overflow_signed, /* complain_on_overflow */
1129 ppc_elf_unhandled_reloc, /* special_function */
1130 "R_PPC_GOT_TLSGD16", /* name */
1131 FALSE, /* partial_inplace */
1132 0, /* src_mask */
1133 0xffff, /* dst_mask */
1134 FALSE), /* pcrel_offset */
1135
1136 /* Like GOT_TLSGD16, but no overflow. */
1137 HOWTO (R_PPC_GOT_TLSGD16_LO,
1138 0, /* rightshift */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 16, /* bitsize */
1141 FALSE, /* pc_relative */
1142 0, /* bitpos */
1143 complain_overflow_dont, /* complain_on_overflow */
1144 ppc_elf_unhandled_reloc, /* special_function */
1145 "R_PPC_GOT_TLSGD16_LO", /* name */
1146 FALSE, /* partial_inplace */
1147 0, /* src_mask */
1148 0xffff, /* dst_mask */
1149 FALSE), /* pcrel_offset */
1150
1151 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1152 HOWTO (R_PPC_GOT_TLSGD16_HI,
1153 16, /* rightshift */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 16, /* bitsize */
1156 FALSE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_dont, /* complain_on_overflow */
1159 ppc_elf_unhandled_reloc, /* special_function */
1160 "R_PPC_GOT_TLSGD16_HI", /* name */
1161 FALSE, /* partial_inplace */
1162 0, /* src_mask */
1163 0xffff, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1165
1166 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1167 HOWTO (R_PPC_GOT_TLSGD16_HA,
1168 16, /* rightshift */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 16, /* bitsize */
1171 FALSE, /* pc_relative */
1172 0, /* bitpos */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 ppc_elf_unhandled_reloc, /* special_function */
1175 "R_PPC_GOT_TLSGD16_HA", /* name */
1176 FALSE, /* partial_inplace */
1177 0, /* src_mask */
1178 0xffff, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1180
1181 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1182 with values (sym+add)@dtpmod and zero, and computes the offset to the
1183 first entry. */
1184 HOWTO (R_PPC_GOT_TLSLD16,
1185 0, /* rightshift */
1186 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 16, /* bitsize */
1188 FALSE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_signed, /* complain_on_overflow */
1191 ppc_elf_unhandled_reloc, /* special_function */
1192 "R_PPC_GOT_TLSLD16", /* name */
1193 FALSE, /* partial_inplace */
1194 0, /* src_mask */
1195 0xffff, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1197
1198 /* Like GOT_TLSLD16, but no overflow. */
1199 HOWTO (R_PPC_GOT_TLSLD16_LO,
1200 0, /* rightshift */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 16, /* bitsize */
1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_dont, /* complain_on_overflow */
1206 ppc_elf_unhandled_reloc, /* special_function */
1207 "R_PPC_GOT_TLSLD16_LO", /* name */
1208 FALSE, /* partial_inplace */
1209 0, /* src_mask */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
1213 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1214 HOWTO (R_PPC_GOT_TLSLD16_HI,
1215 16, /* rightshift */
1216 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 16, /* bitsize */
1218 FALSE, /* pc_relative */
1219 0, /* bitpos */
1220 complain_overflow_dont, /* complain_on_overflow */
1221 ppc_elf_unhandled_reloc, /* special_function */
1222 "R_PPC_GOT_TLSLD16_HI", /* name */
1223 FALSE, /* partial_inplace */
1224 0, /* src_mask */
1225 0xffff, /* dst_mask */
1226 FALSE), /* pcrel_offset */
1227
1228 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1229 HOWTO (R_PPC_GOT_TLSLD16_HA,
1230 16, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 16, /* bitsize */
1233 FALSE, /* pc_relative */
1234 0, /* bitpos */
1235 complain_overflow_dont, /* complain_on_overflow */
1236 ppc_elf_unhandled_reloc, /* special_function */
1237 "R_PPC_GOT_TLSLD16_HA", /* name */
1238 FALSE, /* partial_inplace */
1239 0, /* src_mask */
1240 0xffff, /* dst_mask */
1241 FALSE), /* pcrel_offset */
1242
1243 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1244 the offset to the entry. */
1245 HOWTO (R_PPC_GOT_DTPREL16,
1246 0, /* rightshift */
1247 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 16, /* bitsize */
1249 FALSE, /* pc_relative */
1250 0, /* bitpos */
1251 complain_overflow_signed, /* complain_on_overflow */
1252 ppc_elf_unhandled_reloc, /* special_function */
1253 "R_PPC_GOT_DTPREL16", /* name */
1254 FALSE, /* partial_inplace */
1255 0, /* src_mask */
1256 0xffff, /* dst_mask */
1257 FALSE), /* pcrel_offset */
1258
1259 /* Like GOT_DTPREL16, but no overflow. */
1260 HOWTO (R_PPC_GOT_DTPREL16_LO,
1261 0, /* rightshift */
1262 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 16, /* bitsize */
1264 FALSE, /* pc_relative */
1265 0, /* bitpos */
1266 complain_overflow_dont, /* complain_on_overflow */
1267 ppc_elf_unhandled_reloc, /* special_function */
1268 "R_PPC_GOT_DTPREL16_LO", /* name */
1269 FALSE, /* partial_inplace */
1270 0, /* src_mask */
1271 0xffff, /* dst_mask */
1272 FALSE), /* pcrel_offset */
1273
1274 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1275 HOWTO (R_PPC_GOT_DTPREL16_HI,
1276 16, /* rightshift */
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 16, /* bitsize */
1279 FALSE, /* pc_relative */
1280 0, /* bitpos */
1281 complain_overflow_dont, /* complain_on_overflow */
1282 ppc_elf_unhandled_reloc, /* special_function */
1283 "R_PPC_GOT_DTPREL16_HI", /* name */
1284 FALSE, /* partial_inplace */
1285 0, /* src_mask */
1286 0xffff, /* dst_mask */
1287 FALSE), /* pcrel_offset */
1288
1289 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1290 HOWTO (R_PPC_GOT_DTPREL16_HA,
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 16, /* bitsize */
1294 FALSE, /* pc_relative */
1295 0, /* bitpos */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc_elf_unhandled_reloc, /* special_function */
1298 "R_PPC_GOT_DTPREL16_HA", /* name */
1299 FALSE, /* partial_inplace */
1300 0, /* src_mask */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1303
1304 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1305 offset to the entry. */
1306 HOWTO (R_PPC_GOT_TPREL16,
1307 0, /* rightshift */
1308 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 16, /* bitsize */
1310 FALSE, /* pc_relative */
1311 0, /* bitpos */
1312 complain_overflow_signed, /* complain_on_overflow */
1313 ppc_elf_unhandled_reloc, /* special_function */
1314 "R_PPC_GOT_TPREL16", /* name */
1315 FALSE, /* partial_inplace */
1316 0, /* src_mask */
1317 0xffff, /* dst_mask */
1318 FALSE), /* pcrel_offset */
1319
1320 /* Like GOT_TPREL16, but no overflow. */
1321 HOWTO (R_PPC_GOT_TPREL16_LO,
1322 0, /* rightshift */
1323 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 16, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 ppc_elf_unhandled_reloc, /* special_function */
1329 "R_PPC_GOT_TPREL16_LO", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0xffff, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
1335 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1336 HOWTO (R_PPC_GOT_TPREL16_HI,
1337 16, /* rightshift */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_dont, /* complain_on_overflow */
1343 ppc_elf_unhandled_reloc, /* special_function */
1344 "R_PPC_GOT_TPREL16_HI", /* name */
1345 FALSE, /* partial_inplace */
1346 0, /* src_mask */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
1350 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1351 HOWTO (R_PPC_GOT_TPREL16_HA,
1352 16, /* rightshift */
1353 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 16, /* bitsize */
1355 FALSE, /* pc_relative */
1356 0, /* bitpos */
1357 complain_overflow_dont, /* complain_on_overflow */
1358 ppc_elf_unhandled_reloc, /* special_function */
1359 "R_PPC_GOT_TPREL16_HA", /* name */
1360 FALSE, /* partial_inplace */
1361 0, /* src_mask */
1362 0xffff, /* dst_mask */
1363 FALSE), /* pcrel_offset */
1364
1365 /* The remaining relocs are from the Embedded ELF ABI, and are not
1366 in the SVR4 ELF ABI. */
1367
1368 /* 32 bit value resulting from the addend minus the symbol. */
1369 HOWTO (R_PPC_EMB_NADDR32, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 32, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_bitfield, /* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 "R_PPC_EMB_NADDR32", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* 16 bit value resulting from the addend minus the symbol. */
1384 HOWTO (R_PPC_EMB_NADDR16, /* type */
1385 0, /* rightshift */
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 16, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_bitfield, /* complain_on_overflow */
1391 bfd_elf_generic_reloc, /* special_function */
1392 "R_PPC_EMB_NADDR16", /* name */
1393 FALSE, /* partial_inplace */
1394 0, /* src_mask */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1398 /* 16 bit value resulting from the addend minus the symbol. */
1399 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1400 0, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 16, /* bitsize */
1403 FALSE, /* pc_relative */
1404 0, /* bitpos */
1405 complain_overflow_dont,/* complain_on_overflow */
1406 bfd_elf_generic_reloc, /* special_function */
1407 "R_PPC_EMB_ADDR16_LO", /* name */
1408 FALSE, /* partial_inplace */
1409 0, /* src_mask */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1412
1413 /* The high order 16 bits of the addend minus the symbol. */
1414 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 16, /* bitsize */
1418 FALSE, /* pc_relative */
1419 0, /* bitpos */
1420 complain_overflow_dont, /* complain_on_overflow */
1421 bfd_elf_generic_reloc, /* special_function */
1422 "R_PPC_EMB_NADDR16_HI", /* name */
1423 FALSE, /* partial_inplace */
1424 0, /* src_mask */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1427
1428 /* The high order 16 bits of the result of the addend minus the address,
1429 plus 1 if the contents of the low 16 bits, treated as a signed number,
1430 is negative. */
1431 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1432 16, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 16, /* bitsize */
1435 FALSE, /* pc_relative */
1436 0, /* bitpos */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc_elf_addr16_ha_reloc, /* special_function */
1439 "R_PPC_EMB_NADDR16_HA", /* name */
1440 FALSE, /* partial_inplace */
1441 0, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1444
1445 /* 16 bit value resulting from allocating a 4 byte word to hold an
1446 address in the .sdata section, and returning the offset from
1447 _SDA_BASE_ for that relocation. */
1448 HOWTO (R_PPC_EMB_SDAI16, /* type */
1449 0, /* rightshift */
1450 1, /* size (0 = byte, 1 = short, 2 = long) */
1451 16, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_bitfield, /* complain_on_overflow */
1455 bfd_elf_generic_reloc, /* special_function */
1456 "R_PPC_EMB_SDAI16", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0xffff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 /* 16 bit value resulting from allocating a 4 byte word to hold an
1463 address in the .sdata2 section, and returning the offset from
1464 _SDA2_BASE_ for that relocation. */
1465 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1466 0, /* rightshift */
1467 1, /* size (0 = byte, 1 = short, 2 = long) */
1468 16, /* bitsize */
1469 FALSE, /* pc_relative */
1470 0, /* bitpos */
1471 complain_overflow_bitfield, /* complain_on_overflow */
1472 bfd_elf_generic_reloc, /* special_function */
1473 "R_PPC_EMB_SDA2I16", /* name */
1474 FALSE, /* partial_inplace */
1475 0, /* src_mask */
1476 0xffff, /* dst_mask */
1477 FALSE), /* pcrel_offset */
1478
1479 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1480 small data items. */
1481 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1482 0, /* rightshift */
1483 1, /* size (0 = byte, 1 = short, 2 = long) */
1484 16, /* bitsize */
1485 FALSE, /* pc_relative */
1486 0, /* bitpos */
1487 complain_overflow_signed, /* complain_on_overflow */
1488 bfd_elf_generic_reloc, /* special_function */
1489 "R_PPC_EMB_SDA2REL", /* name */
1490 FALSE, /* partial_inplace */
1491 0, /* src_mask */
1492 0xffff, /* dst_mask */
1493 FALSE), /* pcrel_offset */
1494
1495 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1496 signed offset from the appropriate base, and filling in the register
1497 field with the appropriate register (0, 2, or 13). */
1498 HOWTO (R_PPC_EMB_SDA21, /* type */
1499 0, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 16, /* bitsize */
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
1504 complain_overflow_signed, /* complain_on_overflow */
1505 bfd_elf_generic_reloc, /* special_function */
1506 "R_PPC_EMB_SDA21", /* name */
1507 FALSE, /* partial_inplace */
1508 0, /* src_mask */
1509 0xffff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1511
1512 /* Relocation not handled: R_PPC_EMB_MRKREF */
1513 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1514 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1515 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1516 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1517 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1518
1519 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1520 in the 16 bit signed offset from the appropriate base, and filling in the
1521 register field with the appropriate register (0, 2, or 13). */
1522 HOWTO (R_PPC_EMB_RELSDA, /* type */
1523 0, /* rightshift */
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 TRUE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_signed, /* complain_on_overflow */
1529 bfd_elf_generic_reloc, /* special_function */
1530 "R_PPC_EMB_RELSDA", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* GNU extension to record C++ vtable hierarchy. */
1537 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1538 0, /* rightshift */
1539 0, /* size (0 = byte, 1 = short, 2 = long) */
1540 0, /* bitsize */
1541 FALSE, /* pc_relative */
1542 0, /* bitpos */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 NULL, /* special_function */
1545 "R_PPC_GNU_VTINHERIT", /* name */
1546 FALSE, /* partial_inplace */
1547 0, /* src_mask */
1548 0, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1550
1551 /* GNU extension to record C++ vtable member usage. */
1552 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1553 0, /* rightshift */
1554 0, /* size (0 = byte, 1 = short, 2 = long) */
1555 0, /* bitsize */
1556 FALSE, /* pc_relative */
1557 0, /* bitpos */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 NULL, /* special_function */
1560 "R_PPC_GNU_VTENTRY", /* name */
1561 FALSE, /* partial_inplace */
1562 0, /* src_mask */
1563 0, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1565
1566 /* Phony reloc to handle AIX style TOC entries. */
1567 HOWTO (R_PPC_TOC16, /* type */
1568 0, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1570 16, /* bitsize */
1571 FALSE, /* pc_relative */
1572 0, /* bitpos */
1573 complain_overflow_signed, /* complain_on_overflow */
1574 bfd_elf_generic_reloc, /* special_function */
1575 "R_PPC_TOC16", /* name */
1576 FALSE, /* partial_inplace */
1577 0, /* src_mask */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1580 };
1581 \f
1582 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1583
1584 static void
1585 ppc_elf_howto_init (void)
1586 {
1587 unsigned int i, type;
1588
1589 for (i = 0;
1590 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1591 i++)
1592 {
1593 type = ppc_elf_howto_raw[i].type;
1594 if (type >= (sizeof (ppc_elf_howto_table)
1595 / sizeof (ppc_elf_howto_table[0])))
1596 abort ();
1597 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1598 }
1599 }
1600 \f
1601 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
1602
1603 static const int shared_stub_entry[] =
1604 {
1605 0x7c0802a6, /* mflr 0 */
1606 0x429f0005, /* bcl 20, 31, .Lxxx */
1607 0x7d6802a6, /* mflr 11 */
1608 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
1609 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
1610 0x7c0803a6, /* mtlr 0 */
1611 0x7d6903a6, /* mtctr 11 */
1612 0x4e800420, /* bctr */
1613 };
1614
1615 static const int stub_entry[] =
1616 {
1617 0x3d600000, /* lis 11,xxx@ha */
1618 0x396b0000, /* addi 11,11,xxx@l */
1619 0x7d6903a6, /* mtctr 11 */
1620 0x4e800420, /* bctr */
1621 };
1622
1623
1624 static bfd_boolean
1625 ppc_elf_relax_section (bfd *abfd,
1626 asection *isec,
1627 struct bfd_link_info *link_info,
1628 bfd_boolean *again)
1629 {
1630 struct one_fixup
1631 {
1632 struct one_fixup *next;
1633 asection *tsec;
1634 bfd_vma toff;
1635 bfd_vma trampoff;
1636 };
1637
1638 Elf_Internal_Shdr *symtab_hdr;
1639 bfd_byte *contents = NULL;
1640 Elf_Internal_Sym *isymbuf = NULL;
1641 Elf_Internal_Rela *internal_relocs = NULL;
1642 Elf_Internal_Rela *irel, *irelend;
1643 struct one_fixup *fixups = NULL;
1644 bfd_boolean changed;
1645 struct ppc_elf_link_hash_table *ppc_info;
1646 bfd_size_type trampoff;
1647
1648 *again = FALSE;
1649
1650 /* Nothing to do if there are no relocations. */
1651 if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0)
1652 return TRUE;
1653
1654 trampoff = (isec->size + 3) & (bfd_vma) -4;
1655 /* Space for a branch around any trampolines. */
1656 trampoff += 4;
1657
1658 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1659
1660 /* Get a copy of the native relocations. */
1661 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
1662 link_info->keep_memory);
1663 if (internal_relocs == NULL)
1664 goto error_return;
1665
1666 ppc_info = ppc_elf_hash_table (link_info);
1667 irelend = internal_relocs + isec->reloc_count;
1668
1669 for (irel = internal_relocs; irel < irelend; irel++)
1670 {
1671 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
1672 bfd_vma symaddr, reladdr, toff, roff;
1673 asection *tsec;
1674 struct one_fixup *f;
1675 size_t insn_offset = 0;
1676 bfd_vma max_branch_offset, val;
1677 bfd_byte *hit_addr;
1678 unsigned long t0;
1679 unsigned char sym_type;
1680
1681 switch (r_type)
1682 {
1683 case R_PPC_REL24:
1684 case R_PPC_LOCAL24PC:
1685 case R_PPC_PLTREL24:
1686 max_branch_offset = 1 << 25;
1687 break;
1688
1689 case R_PPC_REL14:
1690 case R_PPC_REL14_BRTAKEN:
1691 case R_PPC_REL14_BRNTAKEN:
1692 max_branch_offset = 1 << 15;
1693 break;
1694
1695 default:
1696 continue;
1697 }
1698
1699 /* Get the value of the symbol referred to by the reloc. */
1700 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1701 {
1702 /* A local symbol. */
1703 Elf_Internal_Sym *isym;
1704
1705 /* Read this BFD's local symbols. */
1706 if (isymbuf == NULL)
1707 {
1708 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1709 if (isymbuf == NULL)
1710 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1711 symtab_hdr->sh_info, 0,
1712 NULL, NULL, NULL);
1713 if (isymbuf == 0)
1714 goto error_return;
1715 }
1716 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1717 if (isym->st_shndx == SHN_UNDEF)
1718 continue; /* We can't do anything with undefined symbols. */
1719 else if (isym->st_shndx == SHN_ABS)
1720 tsec = bfd_abs_section_ptr;
1721 else if (isym->st_shndx == SHN_COMMON)
1722 tsec = bfd_com_section_ptr;
1723 else
1724 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1725
1726 toff = isym->st_value;
1727 sym_type = ELF_ST_TYPE (isym->st_info);
1728 }
1729 else
1730 {
1731 /* Global symbol handling. */
1732 unsigned long indx;
1733 struct elf_link_hash_entry *h;
1734
1735 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1736 h = elf_sym_hashes (abfd)[indx];
1737
1738 while (h->root.type == bfd_link_hash_indirect
1739 || h->root.type == bfd_link_hash_warning)
1740 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1741
1742 if (r_type == R_PPC_PLTREL24
1743 && ppc_info->plt != NULL
1744 && h->plt.offset != (bfd_vma) -1)
1745 {
1746 tsec = ppc_info->plt;
1747 toff = h->plt.offset;
1748 }
1749 else if (h->root.type == bfd_link_hash_defined
1750 || h->root.type == bfd_link_hash_defweak)
1751 {
1752 tsec = h->root.u.def.section;
1753 toff = h->root.u.def.value;
1754 }
1755 else
1756 continue;
1757
1758 sym_type = h->type;
1759 }
1760
1761 /* If the branch and target are in the same section, you have
1762 no hope of adding stubs. We'll error out later should the
1763 branch overflow. */
1764 if (tsec == isec)
1765 continue;
1766
1767 /* There probably isn't any reason to handle symbols in
1768 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
1769 attribute for a code section, and we are only looking at
1770 branches. However, implement it correctly here as a
1771 reference for other target relax_section functions. */
1772 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
1773 {
1774 /* At this stage in linking, no SEC_MERGE symbol has been
1775 adjusted, so all references to such symbols need to be
1776 passed through _bfd_merged_section_offset. (Later, in
1777 relocate_section, all SEC_MERGE symbols *except* for
1778 section symbols have been adjusted.)
1779
1780 gas may reduce relocations against symbols in SEC_MERGE
1781 sections to a relocation against the section symbol when
1782 the original addend was zero. When the reloc is against
1783 a section symbol we should include the addend in the
1784 offset passed to _bfd_merged_section_offset, since the
1785 location of interest is the original symbol. On the
1786 other hand, an access to "sym+addend" where "sym" is not
1787 a section symbol should not include the addend; Such an
1788 access is presumed to be an offset from "sym"; The
1789 location of interest is just "sym". */
1790 if (sym_type == STT_SECTION)
1791 toff += irel->r_addend;
1792
1793 toff = _bfd_merged_section_offset (abfd, &tsec,
1794 elf_section_data (tsec)->sec_info,
1795 toff);
1796
1797 if (sym_type != STT_SECTION)
1798 toff += irel->r_addend;
1799 }
1800 else
1801 toff += irel->r_addend;
1802
1803 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
1804
1805 roff = irel->r_offset;
1806 reladdr = isec->output_section->vma + isec->output_offset + roff;
1807
1808 /* If the branch is in range, no need to do anything. */
1809 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
1810 continue;
1811
1812 /* Look for an existing fixup to this address. */
1813 for (f = fixups; f ; f = f->next)
1814 if (f->tsec == tsec && f->toff == toff)
1815 break;
1816
1817 if (f == NULL)
1818 {
1819 size_t size;
1820 unsigned long stub_rtype;
1821
1822 val = trampoff - roff;
1823 if (val >= max_branch_offset)
1824 /* Oh dear, we can't reach a trampoline. Don't try to add
1825 one. We'll report an error later. */
1826 continue;
1827
1828 if (link_info->shared)
1829 {
1830 size = 4 * ARRAY_SIZE (shared_stub_entry);
1831 insn_offset = 12;
1832 stub_rtype = R_PPC_RELAX32PC;
1833 }
1834 else
1835 {
1836 size = 4 * ARRAY_SIZE (stub_entry);
1837 insn_offset = 0;
1838 stub_rtype = R_PPC_RELAX32;
1839 }
1840
1841 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
1842 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
1843 abort ();
1844 if (tsec == ppc_info->plt)
1845 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
1846
1847 /* Hijack the old relocation. Since we need two
1848 relocations for this use a "composite" reloc. */
1849 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1850 stub_rtype);
1851 irel->r_offset = trampoff + insn_offset;
1852
1853 /* Record the fixup so we don't do it again this section. */
1854 f = bfd_malloc (sizeof (*f));
1855 f->next = fixups;
1856 f->tsec = tsec;
1857 f->toff = toff;
1858 f->trampoff = trampoff;
1859 fixups = f;
1860
1861 trampoff += size;
1862 }
1863 else
1864 {
1865 val = f->trampoff - roff;
1866 if (val >= max_branch_offset)
1867 continue;
1868
1869 /* Nop out the reloc, since we're finalizing things here. */
1870 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
1871 }
1872
1873 /* Get the section contents. */
1874 if (contents == NULL)
1875 {
1876 /* Get cached copy if it exists. */
1877 if (elf_section_data (isec)->this_hdr.contents != NULL)
1878 contents = elf_section_data (isec)->this_hdr.contents;
1879 else
1880 {
1881 /* Go get them off disk. */
1882 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
1883 goto error_return;
1884 }
1885 }
1886
1887 /* Fix up the existing branch to hit the trampoline. */
1888 hit_addr = contents + roff;
1889 switch (r_type)
1890 {
1891 case R_PPC_REL24:
1892 case R_PPC_LOCAL24PC:
1893 case R_PPC_PLTREL24:
1894 t0 = bfd_get_32 (abfd, hit_addr);
1895 t0 &= ~0x3fffffc;
1896 t0 |= val & 0x3fffffc;
1897 bfd_put_32 (abfd, t0, hit_addr);
1898 break;
1899
1900 case R_PPC_REL14:
1901 case R_PPC_REL14_BRTAKEN:
1902 case R_PPC_REL14_BRNTAKEN:
1903 t0 = bfd_get_32 (abfd, hit_addr);
1904 t0 &= ~0xfffc;
1905 t0 |= val & 0xfffc;
1906 bfd_put_32 (abfd, t0, hit_addr);
1907 break;
1908 }
1909 }
1910
1911 /* Write out the trampolines. */
1912 changed = fixups != NULL;
1913 if (fixups != NULL)
1914 {
1915 const int *stub;
1916 bfd_byte *dest;
1917 bfd_vma val;
1918 int i, size;
1919
1920 do
1921 {
1922 struct one_fixup *f = fixups;
1923 fixups = fixups->next;
1924 free (f);
1925 }
1926 while (fixups);
1927
1928 contents = bfd_realloc (contents, trampoff);
1929 if (contents == NULL)
1930 goto error_return;
1931
1932 isec->size = (isec->size + 3) & (bfd_vma) -4;
1933 /* Branch around the trampolines. */
1934 val = trampoff - isec->size + 0x48000000;
1935 dest = contents + isec->size;
1936 isec->size = trampoff;
1937 bfd_put_32 (abfd, val, dest);
1938 dest += 4;
1939
1940 if (link_info->shared)
1941 {
1942 stub = shared_stub_entry;
1943 size = ARRAY_SIZE (shared_stub_entry);
1944 }
1945 else
1946 {
1947 stub = stub_entry;
1948 size = ARRAY_SIZE (stub_entry);
1949 }
1950
1951 i = 0;
1952 while (dest < contents + trampoff)
1953 {
1954 bfd_put_32 (abfd, stub[i], dest);
1955 i++;
1956 if (i == size)
1957 i = 0;
1958 dest += 4;
1959 }
1960 BFD_ASSERT (i == 0);
1961 }
1962
1963 if (isymbuf != NULL
1964 && symtab_hdr->contents != (unsigned char *) isymbuf)
1965 {
1966 if (! link_info->keep_memory)
1967 free (isymbuf);
1968 else
1969 {
1970 /* Cache the symbols for elf_link_input_bfd. */
1971 symtab_hdr->contents = (unsigned char *) isymbuf;
1972 }
1973 }
1974
1975 if (contents != NULL
1976 && elf_section_data (isec)->this_hdr.contents != contents)
1977 {
1978 if (!changed && !link_info->keep_memory)
1979 free (contents);
1980 else
1981 {
1982 /* Cache the section contents for elf_link_input_bfd. */
1983 elf_section_data (isec)->this_hdr.contents = contents;
1984 }
1985 }
1986
1987 if (elf_section_data (isec)->relocs != internal_relocs)
1988 {
1989 if (!changed)
1990 free (internal_relocs);
1991 else
1992 elf_section_data (isec)->relocs = internal_relocs;
1993 }
1994
1995 *again = changed;
1996 return TRUE;
1997
1998 error_return:
1999 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
2000 free (isymbuf);
2001 if (contents != NULL
2002 && elf_section_data (isec)->this_hdr.contents != contents)
2003 free (contents);
2004 if (internal_relocs != NULL
2005 && elf_section_data (isec)->relocs != internal_relocs)
2006 free (internal_relocs);
2007 return FALSE;
2008 }
2009 \f
2010 static reloc_howto_type *
2011 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2012 bfd_reloc_code_real_type code)
2013 {
2014 enum elf_ppc_reloc_type r;
2015
2016 /* Initialize howto table if not already done. */
2017 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2018 ppc_elf_howto_init ();
2019
2020 switch (code)
2021 {
2022 default:
2023 return NULL;
2024
2025 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
2026 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
2027 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
2028 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
2029 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
2030 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
2031 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
2032 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
2033 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
2034 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
2035 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
2036 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
2037 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
2038 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
2039 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
2040 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
2041 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
2042 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
2043 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
2044 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
2045 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
2046 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
2047 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
2048 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
2049 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
2050 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
2051 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
2052 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
2053 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
2054 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
2055 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
2056 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
2057 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
2058 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
2059 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
2060 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
2061 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
2062 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
2063 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
2064 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
2065 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
2066 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
2067 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
2068 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
2069 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
2070 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
2071 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
2072 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
2073 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
2074 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
2075 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
2076 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
2077 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
2078 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
2079 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
2080 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
2081 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
2082 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
2083 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
2084 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
2085 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
2086 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
2087 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
2088 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
2089 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
2090 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
2091 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
2092 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
2093 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
2094 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
2095 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
2096 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
2097 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
2098 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
2099 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
2100 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
2101 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
2102 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
2103 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
2104 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2105 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2106 }
2107
2108 return ppc_elf_howto_table[r];
2109 };
2110
2111 /* Set the howto pointer for a PowerPC ELF reloc. */
2112
2113 static void
2114 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2115 arelent *cache_ptr,
2116 Elf_Internal_Rela *dst)
2117 {
2118 /* Initialize howto table if not already done. */
2119 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2120 ppc_elf_howto_init ();
2121
2122 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2123 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2124 }
2125
2126 /* Handle the R_PPC_ADDR16_HA reloc. */
2127
2128 static bfd_reloc_status_type
2129 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2130 arelent *reloc_entry,
2131 asymbol *symbol,
2132 void *data ATTRIBUTE_UNUSED,
2133 asection *input_section,
2134 bfd *output_bfd,
2135 char **error_message ATTRIBUTE_UNUSED)
2136 {
2137 bfd_vma relocation;
2138
2139 if (output_bfd != NULL)
2140 {
2141 reloc_entry->address += input_section->output_offset;
2142 return bfd_reloc_ok;
2143 }
2144
2145 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2146 return bfd_reloc_outofrange;
2147
2148 if (bfd_is_com_section (symbol->section))
2149 relocation = 0;
2150 else
2151 relocation = symbol->value;
2152
2153 relocation += symbol->section->output_section->vma;
2154 relocation += symbol->section->output_offset;
2155 relocation += reloc_entry->addend;
2156
2157 reloc_entry->addend += (relocation & 0x8000) << 1;
2158
2159 return bfd_reloc_continue;
2160 }
2161
2162 static bfd_reloc_status_type
2163 ppc_elf_unhandled_reloc (bfd *abfd,
2164 arelent *reloc_entry,
2165 asymbol *symbol,
2166 void *data,
2167 asection *input_section,
2168 bfd *output_bfd,
2169 char **error_message)
2170 {
2171 /* If this is a relocatable link (output_bfd test tells us), just
2172 call the generic function. Any adjustment will be done at final
2173 link time. */
2174 if (output_bfd != NULL)
2175 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2176 input_section, output_bfd, error_message);
2177
2178 if (error_message != NULL)
2179 {
2180 static char buf[60];
2181 sprintf (buf, _("generic linker can't handle %s"),
2182 reloc_entry->howto->name);
2183 *error_message = buf;
2184 }
2185 return bfd_reloc_dangerous;
2186 }
2187
2188 /* Fix bad default arch selected for a 32 bit input bfd when the
2189 default is 64 bit. */
2190
2191 static bfd_boolean
2192 ppc_elf_object_p (bfd *abfd)
2193 {
2194 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2195 {
2196 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2197
2198 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2199 {
2200 /* Relies on arch after 64 bit default being 32 bit default. */
2201 abfd->arch_info = abfd->arch_info->next;
2202 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2203 }
2204 }
2205 return TRUE;
2206 }
2207
2208 /* Function to set whether a module needs the -mrelocatable bit set. */
2209
2210 static bfd_boolean
2211 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2212 {
2213 BFD_ASSERT (!elf_flags_init (abfd)
2214 || elf_elfheader (abfd)->e_flags == flags);
2215
2216 elf_elfheader (abfd)->e_flags = flags;
2217 elf_flags_init (abfd) = TRUE;
2218 return TRUE;
2219 }
2220
2221 /* Merge backend specific data from an object file to the output
2222 object file when linking. */
2223
2224 static bfd_boolean
2225 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2226 {
2227 flagword old_flags;
2228 flagword new_flags;
2229 bfd_boolean error;
2230
2231 /* Check if we have the same endianess. */
2232 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
2233 return FALSE;
2234
2235 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2236 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2237 return TRUE;
2238
2239 new_flags = elf_elfheader (ibfd)->e_flags;
2240 old_flags = elf_elfheader (obfd)->e_flags;
2241 if (!elf_flags_init (obfd))
2242 {
2243 /* First call, no flags set. */
2244 elf_flags_init (obfd) = TRUE;
2245 elf_elfheader (obfd)->e_flags = new_flags;
2246 }
2247
2248 /* Compatible flags are ok. */
2249 else if (new_flags == old_flags)
2250 ;
2251
2252 /* Incompatible flags. */
2253 else
2254 {
2255 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
2256 to be linked with either. */
2257 error = FALSE;
2258 if ((new_flags & EF_PPC_RELOCATABLE) != 0
2259 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
2260 {
2261 error = TRUE;
2262 (*_bfd_error_handler)
2263 (_("%B: compiled with -mrelocatable and linked with "
2264 "modules compiled normally"), ibfd);
2265 }
2266 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
2267 && (old_flags & EF_PPC_RELOCATABLE) != 0)
2268 {
2269 error = TRUE;
2270 (*_bfd_error_handler)
2271 (_("%B: compiled normally and linked with "
2272 "modules compiled with -mrelocatable"), ibfd);
2273 }
2274
2275 /* The output is -mrelocatable-lib iff both the input files are. */
2276 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
2277 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
2278
2279 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
2280 but each input file is either -mrelocatable or -mrelocatable-lib. */
2281 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
2282 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
2283 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
2284 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
2285
2286 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
2287 any module uses it. */
2288 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
2289
2290 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
2291 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
2292
2293 /* Warn about any other mismatches. */
2294 if (new_flags != old_flags)
2295 {
2296 error = TRUE;
2297 (*_bfd_error_handler)
2298 (_("%B: uses different e_flags (0x%lx) fields "
2299 "than previous modules (0x%lx)"),
2300 ibfd, (long) new_flags, (long) old_flags);
2301 }
2302
2303 if (error)
2304 {
2305 bfd_set_error (bfd_error_bad_value);
2306 return FALSE;
2307 }
2308 }
2309
2310 return TRUE;
2311 }
2312 \f
2313 /* Handle a PowerPC specific section when reading an object file. This
2314 is called when elfcode.h finds a section with an unknown type. */
2315
2316 static bfd_boolean
2317 ppc_elf_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name)
2318 {
2319 asection *newsect;
2320 flagword flags;
2321
2322 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2323 return FALSE;
2324
2325 newsect = hdr->bfd_section;
2326 flags = bfd_get_section_flags (abfd, newsect);
2327 if (hdr->sh_flags & SHF_EXCLUDE)
2328 flags |= SEC_EXCLUDE;
2329
2330 if (hdr->sh_type == SHT_ORDERED)
2331 flags |= SEC_SORT_ENTRIES;
2332
2333 bfd_set_section_flags (abfd, newsect, flags);
2334 return TRUE;
2335 }
2336 \f
2337 /* Set up any other section flags and such that may be necessary. */
2338
2339 static bfd_boolean
2340 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2341 Elf_Internal_Shdr *shdr,
2342 asection *asect)
2343 {
2344 if ((asect->flags & SEC_EXCLUDE) != 0)
2345 shdr->sh_flags |= SHF_EXCLUDE;
2346
2347 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2348 shdr->sh_type = SHT_ORDERED;
2349
2350 return TRUE;
2351 }
2352 \f
2353 /* Find a linker generated pointer with a given addend and type. */
2354
2355 static elf_linker_section_pointers_t *
2356 elf_find_pointer_linker_section
2357 (elf_linker_section_pointers_t *linker_pointers,
2358 bfd_vma addend,
2359 elf_linker_section_t *lsect)
2360 {
2361 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2362 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2363 return linker_pointers;
2364
2365 return NULL;
2366 }
2367 \f
2368 /* Allocate a pointer to live in a linker created section. */
2369
2370 static bfd_boolean
2371 elf_create_pointer_linker_section (bfd *abfd,
2372 struct bfd_link_info *info,
2373 elf_linker_section_t *lsect,
2374 struct elf_link_hash_entry *h,
2375 const Elf_Internal_Rela *rel)
2376 {
2377 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2378 elf_linker_section_pointers_t *linker_section_ptr;
2379 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2380 bfd_size_type amt;
2381
2382 BFD_ASSERT (lsect != NULL);
2383
2384 /* Is this a global symbol? */
2385 if (h != NULL)
2386 {
2387 struct ppc_elf_link_hash_entry *eh;
2388
2389 /* Has this symbol already been allocated? If so, our work is done. */
2390 eh = (struct ppc_elf_link_hash_entry *) h;
2391 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2392 rel->r_addend,
2393 lsect))
2394 return TRUE;
2395
2396 ptr_linker_section_ptr = &eh->linker_section_pointer;
2397 /* Make sure this symbol is output as a dynamic symbol. */
2398 if (h->dynindx == -1)
2399 {
2400 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2401 return FALSE;
2402 }
2403
2404 if (lsect->rel_section)
2405 lsect->rel_section->size += sizeof (Elf32_External_Rela);
2406 }
2407 else
2408 {
2409 /* Allocation of a pointer to a local symbol. */
2410 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2411
2412 /* Allocate a table to hold the local symbols if first time. */
2413 if (!ptr)
2414 {
2415 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2416
2417 amt = num_symbols;
2418 amt *= sizeof (elf_linker_section_pointers_t *);
2419 ptr = bfd_zalloc (abfd, amt);
2420
2421 if (!ptr)
2422 return FALSE;
2423
2424 elf_local_ptr_offsets (abfd) = ptr;
2425 }
2426
2427 /* Has this symbol already been allocated? If so, our work is done. */
2428 if (elf_find_pointer_linker_section (ptr[r_symndx],
2429 rel->r_addend,
2430 lsect))
2431 return TRUE;
2432
2433 ptr_linker_section_ptr = &ptr[r_symndx];
2434
2435 if (info->shared)
2436 {
2437 /* If we are generating a shared object, we need to
2438 output a R_<xxx>_RELATIVE reloc so that the
2439 dynamic linker can adjust this GOT entry. */
2440 BFD_ASSERT (lsect->rel_section != NULL);
2441 lsect->rel_section->size += sizeof (Elf32_External_Rela);
2442 }
2443 }
2444
2445 /* Allocate space for a pointer in the linker section, and allocate
2446 a new pointer record from internal memory. */
2447 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2448 amt = sizeof (elf_linker_section_pointers_t);
2449 linker_section_ptr = bfd_alloc (abfd, amt);
2450
2451 if (!linker_section_ptr)
2452 return FALSE;
2453
2454 linker_section_ptr->next = *ptr_linker_section_ptr;
2455 linker_section_ptr->addend = rel->r_addend;
2456 linker_section_ptr->lsect = lsect;
2457 linker_section_ptr->written_address_p = FALSE;
2458 *ptr_linker_section_ptr = linker_section_ptr;
2459
2460 linker_section_ptr->offset = lsect->section->size;
2461 lsect->section->size += 4;
2462
2463 #ifdef DEBUG
2464 fprintf (stderr,
2465 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2466 lsect->name, (long) linker_section_ptr->offset,
2467 (long) lsect->section->size);
2468 #endif
2469
2470 return TRUE;
2471 }
2472 \f
2473 #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR)
2474
2475 /* Fill in the address for a pointer generated in a linker section. */
2476
2477 static bfd_vma
2478 elf_finish_pointer_linker_section (bfd *output_bfd,
2479 bfd *input_bfd,
2480 struct bfd_link_info *info,
2481 elf_linker_section_t *lsect,
2482 struct elf_link_hash_entry *h,
2483 bfd_vma relocation,
2484 const Elf_Internal_Rela *rel,
2485 int relative_reloc)
2486 {
2487 elf_linker_section_pointers_t *linker_section_ptr;
2488
2489 BFD_ASSERT (lsect != NULL);
2490
2491 if (h != NULL)
2492 {
2493 /* Handle global symbol. */
2494 struct ppc_elf_link_hash_entry *eh;
2495
2496 eh = (struct ppc_elf_link_hash_entry *) h;
2497 linker_section_ptr
2498 = elf_find_pointer_linker_section (eh->linker_section_pointer,
2499 rel->r_addend,
2500 lsect);
2501
2502 BFD_ASSERT (linker_section_ptr != NULL);
2503
2504 if (! elf_hash_table (info)->dynamic_sections_created
2505 || (info->shared
2506 && info->symbolic
2507 && h->def_regular))
2508 {
2509 /* This is actually a static link, or it is a
2510 -Bsymbolic link and the symbol is defined
2511 locally. We must initialize this entry in the
2512 global section.
2513
2514 When doing a dynamic link, we create a .rela.<xxx>
2515 relocation entry to initialize the value. This
2516 is done in the finish_dynamic_symbol routine. */
2517 if (!linker_section_ptr->written_address_p)
2518 {
2519 linker_section_ptr->written_address_p = TRUE;
2520 bfd_put_ptr (output_bfd,
2521 relocation + linker_section_ptr->addend,
2522 (lsect->section->contents
2523 + linker_section_ptr->offset));
2524 }
2525 }
2526 }
2527 else
2528 {
2529 /* Handle local symbol. */
2530 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2531 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
2532 BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL);
2533 linker_section_ptr = (elf_find_pointer_linker_section
2534 (elf_local_ptr_offsets (input_bfd)[r_symndx],
2535 rel->r_addend,
2536 lsect));
2537
2538 BFD_ASSERT (linker_section_ptr != NULL);
2539
2540 /* Write out pointer if it hasn't been rewritten out before. */
2541 if (!linker_section_ptr->written_address_p)
2542 {
2543 linker_section_ptr->written_address_p = TRUE;
2544 bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
2545 lsect->section->contents + linker_section_ptr->offset);
2546
2547 if (info->shared)
2548 {
2549 /* We need to generate a relative reloc for the dynamic
2550 linker. */
2551
2552 asection *srel = lsect->rel_section;
2553 Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL];
2554 bfd_byte *erel;
2555 const struct elf_backend_data *bed;
2556 unsigned int i;
2557
2558 BFD_ASSERT (srel != NULL);
2559
2560 bed = get_elf_backend_data (output_bfd);
2561 for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
2562 {
2563 outrel[i].r_offset = (lsect->section->output_section->vma
2564 + lsect->section->output_offset
2565 + linker_section_ptr->offset);
2566 outrel[i].r_info = 0;
2567 outrel[i].r_addend = 0;
2568 }
2569 outrel[0].r_info = ELF32_R_INFO (0, relative_reloc);
2570 erel = lsect->section->contents;
2571 erel += (elf_section_data (lsect->section)->rel_count++
2572 * sizeof (Elf32_External_Rela));
2573 bfd_elf32_swap_reloca_out (output_bfd, outrel, erel);
2574 }
2575 }
2576 }
2577
2578 relocation = (lsect->section->output_offset
2579 + linker_section_ptr->offset
2580 - lsect->sym_offset);
2581
2582 #ifdef DEBUG
2583 fprintf (stderr,
2584 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
2585 lsect->name, (long) relocation, (long) relocation);
2586 #endif
2587
2588 /* Subtract out the addend, because it will get added back in by the normal
2589 processing. */
2590 return relocation - linker_section_ptr->addend;
2591 }
2592 \f
2593 /* Create a special linker section */
2594 static elf_linker_section_t *
2595 ppc_elf_create_linker_section (bfd *abfd,
2596 struct bfd_link_info *info,
2597 enum elf_linker_section_enum which)
2598 {
2599 elf_linker_section_t *lsect;
2600 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2601 asection *s, *sym_sec;
2602 bfd_size_type amt;
2603 flagword flags;
2604 const char *name;
2605 const char *rel_name;
2606 const char *sym_name;
2607 bfd_vma sym_offset;
2608
2609 /* The linker creates these sections so it has somewhere to attach
2610 their respective symbols. Startup code (crt1.o) uses these symbols
2611 to initialize a register pointing to the section. If the output
2612 sections corresponding to these input sections were empty it would
2613 be OK to set the symbol to 0 (or any random number), because the
2614 associated register should never be used.
2615 FIXME: Setting a symbol this way is silly. The symbols ought to
2616 be set the same way other backends set gp. */
2617 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2618 | SEC_LINKER_CREATED);
2619 sym_offset = 32768;
2620
2621 switch (which)
2622 {
2623 default:
2624 abort ();
2625 return NULL;
2626
2627 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
2628 name = ".sdata";
2629 rel_name = ".rela.sdata";
2630 sym_name = "_SDA_BASE_";
2631 break;
2632
2633 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
2634 name = ".sdata2";
2635 rel_name = ".rela.sdata2";
2636 sym_name = "_SDA2_BASE_";
2637 flags |= SEC_READONLY;
2638 break;
2639 }
2640
2641 /* Record the first bfd that needs the special sections. */
2642 if (!htab->elf.dynobj)
2643 htab->elf.dynobj = abfd;
2644
2645 amt = sizeof (elf_linker_section_t);
2646 lsect = bfd_zalloc (htab->elf.dynobj, amt);
2647
2648 lsect->sym_offset = sym_offset;
2649
2650 /* See if the sections already exist. */
2651 sym_sec = s = bfd_get_section_by_name (htab->elf.dynobj, name);
2652 if (s == NULL || (s->flags & flags) != flags)
2653 {
2654 s = bfd_make_section_anyway (htab->elf.dynobj, name);
2655 if (s == NULL
2656 || !bfd_set_section_flags (htab->elf.dynobj, s, flags))
2657 return NULL;
2658 if (sym_sec == NULL)
2659 sym_sec = s;
2660 }
2661 lsect->section = s;
2662
2663 if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2
2664 && !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2665 return NULL;
2666
2667 s->size = align_power (s->size, 2);
2668
2669 #ifdef DEBUG
2670 fprintf (stderr, "Creating section %s, current size = %ld\n",
2671 name, (long) s->size);
2672 #endif
2673
2674 if (sym_name)
2675 {
2676 struct elf_link_hash_entry *h;
2677 struct bfd_link_hash_entry *bh;
2678
2679 #ifdef DEBUG
2680 fprintf (stderr, "Adding %s to section %s\n", sym_name, name);
2681 #endif
2682 bh = bfd_link_hash_lookup (info->hash, sym_name,
2683 FALSE, FALSE, FALSE);
2684
2685 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
2686 && !(_bfd_generic_link_add_one_symbol
2687 (info, abfd, sym_name, BSF_GLOBAL, sym_sec, sym_offset, NULL,
2688 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
2689 return NULL;
2690 h = (struct elf_link_hash_entry *) bh;
2691
2692 h->type = STT_OBJECT;
2693 lsect->sym_hash = h;
2694
2695 if (info->shared
2696 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2697 return NULL;
2698 }
2699
2700 if (info->shared)
2701 {
2702 s = bfd_make_section_anyway (htab->elf.dynobj, rel_name);
2703 lsect->rel_section = s;
2704 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2705 | SEC_LINKER_CREATED | SEC_READONLY);
2706 if (s == NULL
2707 || ! bfd_set_section_flags (htab->elf.dynobj, s, flags)
2708 || ! bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2709 return NULL;
2710 }
2711
2712 return lsect;
2713 }
2714 \f
2715 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2716 need to bump up the number of section headers. */
2717
2718 static int
2719 ppc_elf_additional_program_headers (bfd *abfd)
2720 {
2721 asection *s;
2722 int ret = 0;
2723
2724 s = bfd_get_section_by_name (abfd, ".sbss2");
2725 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2726 ++ret;
2727
2728 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2729 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2730 ++ret;
2731
2732 return ret;
2733 }
2734 \f
2735 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2736
2737 static bfd_boolean
2738 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2739 {
2740 struct ppc_elf_link_hash_table *htab;
2741 asection *s;
2742 flagword flags;
2743
2744 if (!_bfd_elf_create_got_section (abfd, info))
2745 return FALSE;
2746
2747 htab = ppc_elf_hash_table (info);
2748 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2749 if (s == NULL)
2750 abort ();
2751
2752 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2753 | SEC_LINKER_CREATED);
2754 if (!bfd_set_section_flags (abfd, s, flags))
2755 return FALSE;
2756
2757 htab->relgot = bfd_make_section (abfd, ".rela.got");
2758 if (!htab->relgot
2759 || ! bfd_set_section_flags (abfd, htab->relgot,
2760 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2761 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2762 | SEC_READONLY))
2763 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2764 return FALSE;
2765
2766 return TRUE;
2767 }
2768
2769 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2770 to output sections (just like _bfd_elf_create_dynamic_sections has
2771 to create .dynbss and .rela.bss). */
2772
2773 static bfd_boolean
2774 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2775 {
2776 struct ppc_elf_link_hash_table *htab;
2777 asection *s;
2778 flagword flags;
2779
2780 htab = ppc_elf_hash_table (info);
2781
2782 if (htab->got == NULL
2783 && !ppc_elf_create_got (abfd, info))
2784 return FALSE;
2785
2786 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2787 return FALSE;
2788
2789 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2790 | SEC_LINKER_CREATED);
2791
2792 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2793 htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
2794 if (s == NULL
2795 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2796 return FALSE;
2797
2798 if (! info->shared)
2799 {
2800 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2801 htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
2802 if (s == NULL
2803 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2804 || ! bfd_set_section_alignment (abfd, s, 2))
2805 return FALSE;
2806 }
2807
2808 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2809 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2810 if (s == NULL)
2811 abort ();
2812
2813 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2814 return bfd_set_section_flags (abfd, s, flags);
2815 }
2816
2817 /* Adjust a symbol defined by a dynamic object and referenced by a
2818 regular object. The current definition is in some section of the
2819 dynamic object, but we're not including those sections. We have to
2820 change the definition to something the rest of the link can
2821 understand. */
2822
2823 static bfd_boolean
2824 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2825 struct elf_link_hash_entry *h)
2826 {
2827 struct ppc_elf_link_hash_table *htab;
2828 asection *s;
2829 unsigned int power_of_two;
2830
2831 #ifdef DEBUG
2832 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
2833 h->root.root.string);
2834 #endif
2835
2836 /* Make sure we know what is going on here. */
2837 htab = ppc_elf_hash_table (info);
2838 BFD_ASSERT (htab->elf.dynobj != NULL
2839 && (h->needs_plt
2840 || h->u.weakdef != NULL
2841 || (h->def_dynamic
2842 && h->ref_regular
2843 && !h->def_regular)));
2844
2845 /* Deal with function syms. */
2846 if (h->type == STT_FUNC
2847 || h->needs_plt)
2848 {
2849 /* Clear procedure linkage table information for any symbol that
2850 won't need a .plt entry. */
2851 if (h->plt.refcount <= 0
2852 || SYMBOL_CALLS_LOCAL (info, h)
2853 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2854 && h->root.type == bfd_link_hash_undefweak))
2855 {
2856 /* A PLT entry is not required/allowed when:
2857
2858 1. We are not using ld.so; because then the PLT entry
2859 can't be set up, so we can't use one. In this case,
2860 ppc_elf_adjust_dynamic_symbol won't even be called.
2861
2862 2. GC has rendered the entry unused.
2863
2864 3. We know for certain that a call to this symbol
2865 will go to this object, or will remain undefined. */
2866 h->plt.offset = (bfd_vma) -1;
2867 h->needs_plt = 0;
2868 }
2869 return TRUE;
2870 }
2871 else
2872 h->plt.offset = (bfd_vma) -1;
2873
2874 /* If this is a weak symbol, and there is a real definition, the
2875 processor independent code will have arranged for us to see the
2876 real definition first, and we can just use the same value. */
2877 if (h->u.weakdef != NULL)
2878 {
2879 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2880 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2881 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2882 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2883 if (ELIMINATE_COPY_RELOCS)
2884 h->non_got_ref = h->u.weakdef->non_got_ref;
2885 return TRUE;
2886 }
2887
2888 /* This is a reference to a symbol defined by a dynamic object which
2889 is not a function. */
2890
2891 /* If we are creating a shared library, we must presume that the
2892 only references to the symbol are via the global offset table.
2893 For such cases we need not do anything here; the relocations will
2894 be handled correctly by relocate_section. */
2895 if (info->shared)
2896 return TRUE;
2897
2898 /* If there are no references to this symbol that do not use the
2899 GOT, we don't need to generate a copy reloc. */
2900 if (!h->non_got_ref)
2901 return TRUE;
2902
2903 if (ELIMINATE_COPY_RELOCS)
2904 {
2905 struct ppc_elf_dyn_relocs *p;
2906 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2907 {
2908 s = p->sec->output_section;
2909 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2910 break;
2911 }
2912
2913 /* If we didn't find any dynamic relocs in read-only sections, then
2914 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2915 if (p == NULL)
2916 {
2917 h->non_got_ref = 0;
2918 return TRUE;
2919 }
2920 }
2921
2922 /* We must allocate the symbol in our .dynbss section, which will
2923 become part of the .bss section of the executable. There will be
2924 an entry for this symbol in the .dynsym section. The dynamic
2925 object will contain position independent code, so all references
2926 from the dynamic object to this symbol will go through the global
2927 offset table. The dynamic linker will use the .dynsym entry to
2928 determine the address it must put in the global offset table, so
2929 both the dynamic object and the regular object will refer to the
2930 same memory location for the variable.
2931
2932 Of course, if the symbol is sufficiently small, we must instead
2933 allocate it in .sbss. FIXME: It would be better to do this if and
2934 only if there were actually SDAREL relocs for that symbol. */
2935
2936 if (h->size <= elf_gp_size (htab->elf.dynobj))
2937 s = htab->dynsbss;
2938 else
2939 s = htab->dynbss;
2940 BFD_ASSERT (s != NULL);
2941
2942 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2943 copy the initial value out of the dynamic object and into the
2944 runtime process image. We need to remember the offset into the
2945 .rela.bss section we are going to use. */
2946 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2947 {
2948 asection *srel;
2949
2950 if (h->size <= elf_gp_size (htab->elf.dynobj))
2951 srel = htab->relsbss;
2952 else
2953 srel = htab->relbss;
2954 BFD_ASSERT (srel != NULL);
2955 srel->size += sizeof (Elf32_External_Rela);
2956 h->needs_copy = 1;
2957 }
2958
2959 /* We need to figure out the alignment required for this symbol. I
2960 have no idea how ELF linkers handle this. */
2961 power_of_two = bfd_log2 (h->size);
2962 if (power_of_two > 4)
2963 power_of_two = 4;
2964
2965 /* Apply the required alignment. */
2966 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
2967 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
2968 {
2969 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
2970 return FALSE;
2971 }
2972
2973 /* Define the symbol as being at this point in the section. */
2974 h->root.u.def.section = s;
2975 h->root.u.def.value = s->size;
2976
2977 /* Increment the section size to make room for the symbol. */
2978 s->size += h->size;
2979
2980 return TRUE;
2981 }
2982 \f
2983 /* Of those relocs that might be copied as dynamic relocs, this macro
2984 selects those that must be copied when linking a shared library,
2985 even when the symbol is local. */
2986
2987 #define MUST_BE_DYN_RELOC(RTYPE) \
2988 ((RTYPE) != R_PPC_REL24 \
2989 && (RTYPE) != R_PPC_REL14 \
2990 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2991 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2992 && (RTYPE) != R_PPC_REL32)
2993
2994 /* Allocate space in associated reloc sections for dynamic relocs. */
2995
2996 static bfd_boolean
2997 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2998 {
2999 struct bfd_link_info *info = inf;
3000 struct ppc_elf_link_hash_entry *eh;
3001 struct ppc_elf_link_hash_table *htab;
3002 struct ppc_elf_dyn_relocs *p;
3003
3004 if (h->root.type == bfd_link_hash_indirect)
3005 return TRUE;
3006
3007 if (h->root.type == bfd_link_hash_warning)
3008 /* When warning symbols are created, they **replace** the "real"
3009 entry in the hash table, thus we never get to see the real
3010 symbol in a hash traversal. So look at it now. */
3011 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3012
3013 htab = ppc_elf_hash_table (info);
3014 if (htab->elf.dynamic_sections_created
3015 && h->plt.refcount > 0)
3016 {
3017 /* Make sure this symbol is output as a dynamic symbol. */
3018 if (h->dynindx == -1
3019 && !h->forced_local)
3020 {
3021 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3022 return FALSE;
3023 }
3024
3025 if (info->shared
3026 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3027 {
3028 asection *s = htab->plt;
3029
3030 /* If this is the first .plt entry, make room for the special
3031 first entry. */
3032 if (s->size == 0)
3033 s->size += PLT_INITIAL_ENTRY_SIZE;
3034
3035 /* The PowerPC PLT is actually composed of two parts, the
3036 first part is 2 words (for a load and a jump), and then
3037 there is a remaining word available at the end. */
3038 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3039 + (PLT_SLOT_SIZE
3040 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
3041 / PLT_ENTRY_SIZE)));
3042
3043 /* If this symbol is not defined in a regular file, and we
3044 are not generating a shared library, then set the symbol
3045 to this location in the .plt. This is required to make
3046 function pointers compare as equal between the normal
3047 executable and the shared library. */
3048 if (! info->shared
3049 && !h->def_regular)
3050 {
3051 h->root.u.def.section = s;
3052 h->root.u.def.value = h->plt.offset;
3053 }
3054
3055 /* Make room for this entry. After the 8192nd entry, room
3056 for two entries is allocated. */
3057 s->size += PLT_ENTRY_SIZE;
3058 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3059 > PLT_NUM_SINGLE_ENTRIES)
3060 s->size += PLT_ENTRY_SIZE;
3061
3062 /* We also need to make an entry in the .rela.plt section. */
3063 htab->relplt->size += sizeof (Elf32_External_Rela);
3064 }
3065 else
3066 {
3067 h->plt.offset = (bfd_vma) -1;
3068 h->needs_plt = 0;
3069 }
3070 }
3071 else
3072 {
3073 h->plt.offset = (bfd_vma) -1;
3074 h->needs_plt = 0;
3075 }
3076
3077 eh = (struct ppc_elf_link_hash_entry *) h;
3078 if (eh->elf.got.refcount > 0)
3079 {
3080 /* Make sure this symbol is output as a dynamic symbol. */
3081 if (eh->elf.dynindx == -1
3082 && !eh->elf.forced_local)
3083 {
3084 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
3085 return FALSE;
3086 }
3087
3088 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3089 && !eh->elf.def_dynamic)
3090 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3091 eh->elf.got.offset = (bfd_vma) -1;
3092 else
3093 {
3094 bfd_boolean dyn;
3095 eh->elf.got.offset = htab->got->size;
3096 if ((eh->tls_mask & TLS_TLS) != 0)
3097 {
3098 if ((eh->tls_mask & TLS_LD) != 0)
3099 htab->got->size += 8;
3100 if ((eh->tls_mask & TLS_GD) != 0)
3101 htab->got->size += 8;
3102 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3103 htab->got->size += 4;
3104 if ((eh->tls_mask & TLS_DTPREL) != 0)
3105 htab->got->size += 4;
3106 }
3107 else
3108 htab->got->size += 4;
3109 dyn = htab->elf.dynamic_sections_created;
3110 if ((info->shared
3111 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3112 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3113 || eh->elf.root.type != bfd_link_hash_undefweak))
3114 {
3115 /* All the entries we allocated need relocs. */
3116 htab->relgot->size
3117 += ((htab->got->size - eh->elf.got.offset) / 4
3118 * sizeof (Elf32_External_Rela));
3119 /* Except LD only needs one. */
3120 if ((eh->tls_mask & TLS_LD) != 0)
3121 htab->relgot->size -= sizeof (Elf32_External_Rela);
3122 }
3123 }
3124 }
3125 else
3126 eh->elf.got.offset = (bfd_vma) -1;
3127
3128 if (eh->dyn_relocs == NULL)
3129 return TRUE;
3130
3131 /* In the shared -Bsymbolic case, discard space allocated for
3132 dynamic pc-relative relocs against symbols which turn out to be
3133 defined in regular objects. For the normal shared case, discard
3134 space for relocs that have become local due to symbol visibility
3135 changes. */
3136
3137 if (info->shared)
3138 {
3139 /* Relocs that use pc_count are those that appear on a call insn,
3140 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3141 generated via assembly. We want calls to protected symbols to
3142 resolve directly to the function rather than going via the plt.
3143 If people want function pointer comparisons to work as expected
3144 then they should avoid writing weird assembly. */
3145 if (SYMBOL_CALLS_LOCAL (info, h))
3146 {
3147 struct ppc_elf_dyn_relocs **pp;
3148
3149 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3150 {
3151 p->count -= p->pc_count;
3152 p->pc_count = 0;
3153 if (p->count == 0)
3154 *pp = p->next;
3155 else
3156 pp = &p->next;
3157 }
3158 }
3159
3160 /* Also discard relocs on undefined weak syms with non-default
3161 visibility. */
3162 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3163 && h->root.type == bfd_link_hash_undefweak)
3164 eh->dyn_relocs = NULL;
3165
3166 /* Make sure undefined weak symbols are output as a dynamic symbol
3167 in PIEs. */
3168 if (info->pie
3169 && eh->dyn_relocs != NULL
3170 && h->dynindx == -1
3171 && h->root.type == bfd_link_hash_undefweak
3172 && !h->forced_local)
3173 {
3174 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3175 return FALSE;
3176 }
3177 }
3178 else if (ELIMINATE_COPY_RELOCS)
3179 {
3180 /* For the non-shared case, discard space for relocs against
3181 symbols which turn out to need copy relocs or are not
3182 dynamic. */
3183
3184 if (!h->non_got_ref
3185 && h->def_dynamic
3186 && !h->def_regular)
3187 {
3188 /* Make sure this symbol is output as a dynamic symbol.
3189 Undefined weak syms won't yet be marked as dynamic. */
3190 if (h->dynindx == -1
3191 && !h->forced_local)
3192 {
3193 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3194 return FALSE;
3195 }
3196
3197 /* If that succeeded, we know we'll be keeping all the
3198 relocs. */
3199 if (h->dynindx != -1)
3200 goto keep;
3201 }
3202
3203 eh->dyn_relocs = NULL;
3204
3205 keep: ;
3206 }
3207
3208 /* Finally, allocate space. */
3209 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3210 {
3211 asection *sreloc = elf_section_data (p->sec)->sreloc;
3212 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3213 }
3214
3215 return TRUE;
3216 }
3217
3218 /* Find any dynamic relocs that apply to read-only sections. */
3219
3220 static bfd_boolean
3221 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3222 {
3223 struct ppc_elf_dyn_relocs *p;
3224
3225 if (h->root.type == bfd_link_hash_indirect)
3226 return TRUE;
3227
3228 if (h->root.type == bfd_link_hash_warning)
3229 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3230
3231 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3232 {
3233 asection *s = p->sec->output_section;
3234
3235 if (s != NULL
3236 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3237 == (SEC_READONLY | SEC_ALLOC)))
3238 {
3239 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
3240
3241 /* Not an error, just cut short the traversal. */
3242 return FALSE;
3243 }
3244 }
3245 return TRUE;
3246 }
3247
3248 /* Set the sizes of the dynamic sections. */
3249
3250 static bfd_boolean
3251 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3252 struct bfd_link_info *info)
3253 {
3254 struct ppc_elf_link_hash_table *htab;
3255 asection *s;
3256 bfd_boolean relocs;
3257 bfd *ibfd;
3258
3259 #ifdef DEBUG
3260 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
3261 #endif
3262
3263 htab = ppc_elf_hash_table (info);
3264 BFD_ASSERT (htab->elf.dynobj != NULL);
3265
3266 if (elf_hash_table (info)->dynamic_sections_created)
3267 {
3268 /* Set the contents of the .interp section to the interpreter. */
3269 if (info->executable)
3270 {
3271 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3272 BFD_ASSERT (s != NULL);
3273 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3274 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3275 }
3276 }
3277
3278 if (htab->tlsld_got.refcount > 0)
3279 {
3280 htab->tlsld_got.offset = htab->got->size;
3281 htab->got->size += 8;
3282 if (info->shared)
3283 htab->relgot->size += sizeof (Elf32_External_Rela);
3284 }
3285 else
3286 htab->tlsld_got.offset = (bfd_vma) -1;
3287
3288 /* Set up .got offsets for local syms, and space for local dynamic
3289 relocs. */
3290 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3291 {
3292 bfd_signed_vma *local_got;
3293 bfd_signed_vma *end_local_got;
3294 char *lgot_masks;
3295 bfd_size_type locsymcount;
3296 Elf_Internal_Shdr *symtab_hdr;
3297 asection *srel;
3298
3299 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
3300 continue;
3301
3302 for (s = ibfd->sections; s != NULL; s = s->next)
3303 {
3304 struct ppc_elf_dyn_relocs *p;
3305
3306 for (p = ((struct ppc_elf_dyn_relocs *)
3307 elf_section_data (s)->local_dynrel);
3308 p != NULL;
3309 p = p->next)
3310 {
3311 if (!bfd_is_abs_section (p->sec)
3312 && bfd_is_abs_section (p->sec->output_section))
3313 {
3314 /* Input section has been discarded, either because
3315 it is a copy of a linkonce section or due to
3316 linker script /DISCARD/, so we'll be discarding
3317 the relocs too. */
3318 }
3319 else if (p->count != 0)
3320 {
3321 elf_section_data (p->sec)->sreloc->size
3322 += p->count * sizeof (Elf32_External_Rela);
3323 if ((p->sec->output_section->flags
3324 & (SEC_READONLY | SEC_ALLOC))
3325 == (SEC_READONLY | SEC_ALLOC))
3326 info->flags |= DF_TEXTREL;
3327 }
3328 }
3329 }
3330
3331 local_got = elf_local_got_refcounts (ibfd);
3332 if (!local_got)
3333 continue;
3334
3335 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3336 locsymcount = symtab_hdr->sh_info;
3337 end_local_got = local_got + locsymcount;
3338 lgot_masks = (char *) end_local_got;
3339 s = htab->got;
3340 srel = htab->relgot;
3341 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
3342 if (*local_got > 0)
3343 {
3344 if (*lgot_masks == (TLS_TLS | TLS_LD))
3345 {
3346 /* If just an LD reloc, we'll just use
3347 htab->tlsld_got.offset. */
3348 if (htab->tlsld_got.offset == (bfd_vma) -1)
3349 {
3350 htab->tlsld_got.offset = s->size;
3351 s->size += 8;
3352 if (info->shared)
3353 srel->size += sizeof (Elf32_External_Rela);
3354 }
3355 *local_got = (bfd_vma) -1;
3356 }
3357 else
3358 {
3359 *local_got = s->size;
3360 if ((*lgot_masks & TLS_TLS) != 0)
3361 {
3362 if ((*lgot_masks & TLS_GD) != 0)
3363 s->size += 8;
3364 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3365 s->size += 4;
3366 if ((*lgot_masks & TLS_DTPREL) != 0)
3367 s->size += 4;
3368 }
3369 else
3370 s->size += 4;
3371 if (info->shared)
3372 srel->size += ((s->size - *local_got) / 4
3373 * sizeof (Elf32_External_Rela));
3374 }
3375 }
3376 else
3377 *local_got = (bfd_vma) -1;
3378 }
3379
3380 /* Allocate space for global sym dynamic relocs. */
3381 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
3382
3383 /* We've now determined the sizes of the various dynamic sections.
3384 Allocate memory for them. */
3385 relocs = FALSE;
3386 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
3387 {
3388 if ((s->flags & SEC_LINKER_CREATED) == 0)
3389 continue;
3390
3391 if (s == htab->plt
3392 || s == htab->got)
3393 {
3394 /* Strip this section if we don't need it; see the
3395 comment below. */
3396 }
3397 else if ((htab->sdata != NULL && s == htab->sdata->section)
3398 || (htab->sdata2 != NULL && s == htab->sdata2->section))
3399 {
3400 if (s->size == 0)
3401 /* Don't strip these sections. We need them because they
3402 define _SDA_BASE_ and _SDA2_BASE_. crt1.o makes a
3403 reference to _SDA_BASE_ to set up r13. */
3404 continue;
3405 }
3406 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
3407 {
3408 if (s->size == 0)
3409 {
3410 /* If we don't need this section, strip it from the
3411 output file. This is mostly to handle .rela.bss and
3412 .rela.plt. We must create both sections in
3413 create_dynamic_sections, because they must be created
3414 before the linker maps input sections to output
3415 sections. The linker does that before
3416 adjust_dynamic_symbol is called, and it is that
3417 function which decides whether anything needs to go
3418 into these sections. */
3419 }
3420 else
3421 {
3422 /* Remember whether there are any relocation sections. */
3423 relocs = TRUE;
3424
3425 /* We use the reloc_count field as a counter if we need
3426 to copy relocs into the output file. */
3427 s->reloc_count = 0;
3428 }
3429 }
3430 else
3431 {
3432 /* It's not one of our sections, so don't allocate space. */
3433 continue;
3434 }
3435
3436 if (s->size == 0)
3437 {
3438 _bfd_strip_section_from_output (info, s);
3439 continue;
3440 }
3441
3442 /* Allocate memory for the section contents. */
3443 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
3444 if (s->contents == NULL)
3445 return FALSE;
3446 }
3447
3448 if (htab->elf.dynamic_sections_created)
3449 {
3450 /* Add some entries to the .dynamic section. We fill in the
3451 values later, in ppc_elf_finish_dynamic_sections, but we
3452 must add the entries now so that we get the correct size for
3453 the .dynamic section. The DT_DEBUG entry is filled in by the
3454 dynamic linker and used by the debugger. */
3455 #define add_dynamic_entry(TAG, VAL) \
3456 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3457
3458 if (info->executable)
3459 {
3460 if (!add_dynamic_entry (DT_DEBUG, 0))
3461 return FALSE;
3462 }
3463
3464 if (htab->plt != NULL && htab->plt->size != 0)
3465 {
3466 if (!add_dynamic_entry (DT_PLTGOT, 0)
3467 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3468 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3469 || !add_dynamic_entry (DT_JMPREL, 0))
3470 return FALSE;
3471 }
3472
3473 if (relocs)
3474 {
3475 if (!add_dynamic_entry (DT_RELA, 0)
3476 || !add_dynamic_entry (DT_RELASZ, 0)
3477 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3478 return FALSE;
3479 }
3480
3481 /* If any dynamic relocs apply to a read-only section, then we
3482 need a DT_TEXTREL entry. */
3483 if ((info->flags & DF_TEXTREL) == 0)
3484 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
3485 info);
3486
3487 if ((info->flags & DF_TEXTREL) != 0)
3488 {
3489 if (!add_dynamic_entry (DT_TEXTREL, 0))
3490 return FALSE;
3491 }
3492 }
3493 #undef add_dynamic_entry
3494
3495 return TRUE;
3496 }
3497 \f
3498 static bfd_boolean
3499 update_local_sym_info (bfd *abfd,
3500 Elf_Internal_Shdr *symtab_hdr,
3501 unsigned long r_symndx,
3502 int tls_type)
3503 {
3504 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3505 char *local_got_tls_masks;
3506
3507 if (local_got_refcounts == NULL)
3508 {
3509 bfd_size_type size = symtab_hdr->sh_info;
3510
3511 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3512 local_got_refcounts = bfd_zalloc (abfd, size);
3513 if (local_got_refcounts == NULL)
3514 return FALSE;
3515 elf_local_got_refcounts (abfd) = local_got_refcounts;
3516 }
3517
3518 local_got_refcounts[r_symndx] += 1;
3519 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3520 local_got_tls_masks[r_symndx] |= tls_type;
3521 return TRUE;
3522 }
3523
3524 static void
3525 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3526 {
3527 (*_bfd_error_handler)
3528 (_("%B: relocation %s cannot be used when making a shared object"),
3529 abfd,
3530 ppc_elf_howto_table[r_type]->name);
3531 bfd_set_error (bfd_error_bad_value);
3532 }
3533
3534 /* Look through the relocs for a section during the first phase, and
3535 allocate space in the global offset table or procedure linkage
3536 table. */
3537
3538 static bfd_boolean
3539 ppc_elf_check_relocs (bfd *abfd,
3540 struct bfd_link_info *info,
3541 asection *sec,
3542 const Elf_Internal_Rela *relocs)
3543 {
3544 struct ppc_elf_link_hash_table *htab;
3545 Elf_Internal_Shdr *symtab_hdr;
3546 struct elf_link_hash_entry **sym_hashes;
3547 const Elf_Internal_Rela *rel;
3548 const Elf_Internal_Rela *rel_end;
3549 asection *sreloc;
3550
3551 if (info->relocatable)
3552 return TRUE;
3553
3554 #ifdef DEBUG
3555 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3556 sec, abfd);
3557 #endif
3558
3559 /* Initialize howto table if not already done. */
3560 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3561 ppc_elf_howto_init ();
3562
3563 /* Create the linker generated sections all the time so that the
3564 special symbols are created. */
3565 htab = ppc_elf_hash_table (info);
3566 if (htab->sdata == NULL)
3567 {
3568 htab->sdata = ppc_elf_create_linker_section (abfd, info,
3569 LINKER_SECTION_SDATA);
3570 if (htab->sdata == NULL)
3571 return FALSE;
3572 }
3573
3574 if (htab->sdata2 == NULL)
3575 {
3576 htab->sdata2 = ppc_elf_create_linker_section (abfd, info,
3577 LINKER_SECTION_SDATA2);
3578 if (htab->sdata2 == NULL)
3579 return FALSE;
3580 }
3581
3582 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3583 sym_hashes = elf_sym_hashes (abfd);
3584 sreloc = NULL;
3585
3586 rel_end = relocs + sec->reloc_count;
3587 for (rel = relocs; rel < rel_end; rel++)
3588 {
3589 unsigned long r_symndx;
3590 enum elf_ppc_reloc_type r_type;
3591 struct elf_link_hash_entry *h;
3592 int tls_type = 0;
3593
3594 r_symndx = ELF32_R_SYM (rel->r_info);
3595 if (r_symndx < symtab_hdr->sh_info)
3596 h = NULL;
3597 else
3598 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3599
3600 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3601 This shows up in particular in an R_PPC_ADDR32 in the eabi
3602 startup code. */
3603 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3604 {
3605 if (htab->got == NULL)
3606 {
3607 if (htab->elf.dynobj == NULL)
3608 htab->elf.dynobj = abfd;
3609 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3610 return FALSE;
3611 }
3612 }
3613
3614 r_type = ELF32_R_TYPE (rel->r_info);
3615 switch (r_type)
3616 {
3617 case R_PPC_GOT_TLSLD16:
3618 case R_PPC_GOT_TLSLD16_LO:
3619 case R_PPC_GOT_TLSLD16_HI:
3620 case R_PPC_GOT_TLSLD16_HA:
3621 htab->tlsld_got.refcount += 1;
3622 tls_type = TLS_TLS | TLS_LD;
3623 goto dogottls;
3624
3625 case R_PPC_GOT_TLSGD16:
3626 case R_PPC_GOT_TLSGD16_LO:
3627 case R_PPC_GOT_TLSGD16_HI:
3628 case R_PPC_GOT_TLSGD16_HA:
3629 tls_type = TLS_TLS | TLS_GD;
3630 goto dogottls;
3631
3632 case R_PPC_GOT_TPREL16:
3633 case R_PPC_GOT_TPREL16_LO:
3634 case R_PPC_GOT_TPREL16_HI:
3635 case R_PPC_GOT_TPREL16_HA:
3636 if (info->shared)
3637 info->flags |= DF_STATIC_TLS;
3638 tls_type = TLS_TLS | TLS_TPREL;
3639 goto dogottls;
3640
3641 case R_PPC_GOT_DTPREL16:
3642 case R_PPC_GOT_DTPREL16_LO:
3643 case R_PPC_GOT_DTPREL16_HI:
3644 case R_PPC_GOT_DTPREL16_HA:
3645 tls_type = TLS_TLS | TLS_DTPREL;
3646 dogottls:
3647 sec->has_tls_reloc = 1;
3648 /* Fall thru */
3649
3650 /* GOT16 relocations */
3651 case R_PPC_GOT16:
3652 case R_PPC_GOT16_LO:
3653 case R_PPC_GOT16_HI:
3654 case R_PPC_GOT16_HA:
3655 /* This symbol requires a global offset table entry. */
3656 if (htab->got == NULL)
3657 {
3658 if (htab->elf.dynobj == NULL)
3659 htab->elf.dynobj = abfd;
3660 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3661 return FALSE;
3662 }
3663 if (h != NULL)
3664 {
3665 h->got.refcount += 1;
3666 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3667 }
3668 else
3669 /* This is a global offset table entry for a local symbol. */
3670 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3671 return FALSE;
3672 break;
3673
3674 /* Indirect .sdata relocation. */
3675 case R_PPC_EMB_SDAI16:
3676 if (info->shared)
3677 {
3678 bad_shared_reloc (abfd, r_type);
3679 return FALSE;
3680 }
3681 if (!elf_create_pointer_linker_section (abfd, info,
3682 htab->sdata, h, rel))
3683 return FALSE;
3684 break;
3685
3686 /* Indirect .sdata2 relocation. */
3687 case R_PPC_EMB_SDA2I16:
3688 if (info->shared)
3689 {
3690 bad_shared_reloc (abfd, r_type);
3691 return FALSE;
3692 }
3693 if (!elf_create_pointer_linker_section (abfd, info,
3694 htab->sdata2, h, rel))
3695 return FALSE;
3696 break;
3697
3698 case R_PPC_SDAREL16:
3699 case R_PPC_EMB_SDA2REL:
3700 case R_PPC_EMB_SDA21:
3701 case R_PPC_EMB_RELSDA:
3702 case R_PPC_EMB_NADDR32:
3703 case R_PPC_EMB_NADDR16:
3704 case R_PPC_EMB_NADDR16_LO:
3705 case R_PPC_EMB_NADDR16_HI:
3706 case R_PPC_EMB_NADDR16_HA:
3707 if (info->shared)
3708 {
3709 bad_shared_reloc (abfd, r_type);
3710 return FALSE;
3711 }
3712 break;
3713
3714 case R_PPC_PLT32:
3715 case R_PPC_PLTREL24:
3716 case R_PPC_PLTREL32:
3717 case R_PPC_PLT16_LO:
3718 case R_PPC_PLT16_HI:
3719 case R_PPC_PLT16_HA:
3720 #ifdef DEBUG
3721 fprintf (stderr, "Reloc requires a PLT entry\n");
3722 #endif
3723 /* This symbol requires a procedure linkage table entry. We
3724 actually build the entry in finish_dynamic_symbol,
3725 because this might be a case of linking PIC code without
3726 linking in any dynamic objects, in which case we don't
3727 need to generate a procedure linkage table after all. */
3728
3729 if (h == NULL)
3730 {
3731 /* It does not make sense to have a procedure linkage
3732 table entry for a local symbol. */
3733 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3734 "local symbol"),
3735 abfd,
3736 sec,
3737 (long) rel->r_offset,
3738 ppc_elf_howto_table[r_type]->name);
3739 bfd_set_error (bfd_error_bad_value);
3740 return FALSE;
3741 }
3742
3743 h->needs_plt = 1;
3744 h->plt.refcount++;
3745 break;
3746
3747 /* The following relocations don't need to propagate the
3748 relocation if linking a shared object since they are
3749 section relative. */
3750 case R_PPC_SECTOFF:
3751 case R_PPC_SECTOFF_LO:
3752 case R_PPC_SECTOFF_HI:
3753 case R_PPC_SECTOFF_HA:
3754 case R_PPC_DTPREL16:
3755 case R_PPC_DTPREL16_LO:
3756 case R_PPC_DTPREL16_HI:
3757 case R_PPC_DTPREL16_HA:
3758 case R_PPC_TOC16:
3759 break;
3760
3761 /* This are just markers. */
3762 case R_PPC_TLS:
3763 case R_PPC_EMB_MRKREF:
3764 case R_PPC_NONE:
3765 case R_PPC_max:
3766 break;
3767
3768 /* These should only appear in dynamic objects. */
3769 case R_PPC_COPY:
3770 case R_PPC_GLOB_DAT:
3771 case R_PPC_JMP_SLOT:
3772 case R_PPC_RELATIVE:
3773 break;
3774
3775 /* These aren't handled yet. We'll report an error later. */
3776 case R_PPC_ADDR30:
3777 case R_PPC_EMB_RELSEC16:
3778 case R_PPC_EMB_RELST_LO:
3779 case R_PPC_EMB_RELST_HI:
3780 case R_PPC_EMB_RELST_HA:
3781 case R_PPC_EMB_BIT_FLD:
3782 break;
3783
3784 /* This refers only to functions defined in the shared library. */
3785 case R_PPC_LOCAL24PC:
3786 break;
3787
3788 /* This relocation describes the C++ object vtable hierarchy.
3789 Reconstruct it for later use during GC. */
3790 case R_PPC_GNU_VTINHERIT:
3791 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3792 return FALSE;
3793 break;
3794
3795 /* This relocation describes which C++ vtable entries are actually
3796 used. Record for later use during GC. */
3797 case R_PPC_GNU_VTENTRY:
3798 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3799 return FALSE;
3800 break;
3801
3802 /* We shouldn't really be seeing these. */
3803 case R_PPC_TPREL32:
3804 if (info->shared)
3805 info->flags |= DF_STATIC_TLS;
3806 goto dodyn;
3807
3808 /* Nor these. */
3809 case R_PPC_DTPMOD32:
3810 case R_PPC_DTPREL32:
3811 goto dodyn;
3812
3813 case R_PPC_TPREL16:
3814 case R_PPC_TPREL16_LO:
3815 case R_PPC_TPREL16_HI:
3816 case R_PPC_TPREL16_HA:
3817 if (info->shared)
3818 info->flags |= DF_STATIC_TLS;
3819 goto dodyn;
3820
3821 /* When creating a shared object, we must copy these
3822 relocs into the output file. We create a reloc
3823 section in dynobj and make room for the reloc. */
3824 case R_PPC_REL24:
3825 case R_PPC_REL14:
3826 case R_PPC_REL14_BRTAKEN:
3827 case R_PPC_REL14_BRNTAKEN:
3828 case R_PPC_REL32:
3829 if (h == NULL
3830 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3831 break;
3832 /* fall through */
3833
3834 case R_PPC_ADDR32:
3835 case R_PPC_ADDR24:
3836 case R_PPC_ADDR16:
3837 case R_PPC_ADDR16_LO:
3838 case R_PPC_ADDR16_HI:
3839 case R_PPC_ADDR16_HA:
3840 case R_PPC_ADDR14:
3841 case R_PPC_ADDR14_BRTAKEN:
3842 case R_PPC_ADDR14_BRNTAKEN:
3843 case R_PPC_UADDR32:
3844 case R_PPC_UADDR16:
3845 if (h != NULL && !info->shared)
3846 {
3847 /* We may need a plt entry if the symbol turns out to be
3848 a function defined in a dynamic object. */
3849 h->plt.refcount++;
3850
3851 /* We may need a copy reloc too. */
3852 h->non_got_ref = 1;
3853 }
3854
3855 dodyn:
3856 /* If we are creating a shared library, and this is a reloc
3857 against a global symbol, or a non PC relative reloc
3858 against a local symbol, then we need to copy the reloc
3859 into the shared library. However, if we are linking with
3860 -Bsymbolic, we do not need to copy a reloc against a
3861 global symbol which is defined in an object we are
3862 including in the link (i.e., DEF_REGULAR is set). At
3863 this point we have not seen all the input files, so it is
3864 possible that DEF_REGULAR is not set now but will be set
3865 later (it is never cleared). In case of a weak definition,
3866 DEF_REGULAR may be cleared later by a strong definition in
3867 a shared library. We account for that possibility below by
3868 storing information in the dyn_relocs field of the hash
3869 table entry. A similar situation occurs when creating
3870 shared libraries and symbol visibility changes render the
3871 symbol local.
3872
3873 If on the other hand, we are creating an executable, we
3874 may need to keep relocations for symbols satisfied by a
3875 dynamic library if we manage to avoid copy relocs for the
3876 symbol. */
3877 if ((info->shared
3878 && (MUST_BE_DYN_RELOC (r_type)
3879 || (h != NULL
3880 && (! info->symbolic
3881 || h->root.type == bfd_link_hash_defweak
3882 || !h->def_regular))))
3883 || (ELIMINATE_COPY_RELOCS
3884 && !info->shared
3885 && (sec->flags & SEC_ALLOC) != 0
3886 && h != NULL
3887 && (h->root.type == bfd_link_hash_defweak
3888 || !h->def_regular)))
3889 {
3890 struct ppc_elf_dyn_relocs *p;
3891 struct ppc_elf_dyn_relocs **head;
3892
3893 #ifdef DEBUG
3894 fprintf (stderr,
3895 "ppc_elf_check_relocs needs to "
3896 "create relocation for %s\n",
3897 (h && h->root.root.string
3898 ? h->root.root.string : "<unknown>"));
3899 #endif
3900 if (sreloc == NULL)
3901 {
3902 const char *name;
3903
3904 name = (bfd_elf_string_from_elf_section
3905 (abfd,
3906 elf_elfheader (abfd)->e_shstrndx,
3907 elf_section_data (sec)->rel_hdr.sh_name));
3908 if (name == NULL)
3909 return FALSE;
3910
3911 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3912 && strcmp (bfd_get_section_name (abfd, sec),
3913 name + 5) == 0);
3914
3915 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3916 if (sreloc == NULL)
3917 {
3918 flagword flags;
3919
3920 sreloc = bfd_make_section (htab->elf.dynobj, name);
3921 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3922 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3923 if ((sec->flags & SEC_ALLOC) != 0)
3924 flags |= SEC_ALLOC | SEC_LOAD;
3925 if (sreloc == NULL
3926 || ! bfd_set_section_flags (htab->elf.dynobj,
3927 sreloc, flags)
3928 || ! bfd_set_section_alignment (htab->elf.dynobj,
3929 sreloc, 2))
3930 return FALSE;
3931 }
3932 elf_section_data (sec)->sreloc = sreloc;
3933 }
3934
3935 /* If this is a global symbol, we count the number of
3936 relocations we need for this symbol. */
3937 if (h != NULL)
3938 {
3939 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3940 }
3941 else
3942 {
3943 /* Track dynamic relocs needed for local syms too.
3944 We really need local syms available to do this
3945 easily. Oh well. */
3946
3947 asection *s;
3948 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3949 sec, r_symndx);
3950 if (s == NULL)
3951 return FALSE;
3952
3953 head = ((struct ppc_elf_dyn_relocs **)
3954 &elf_section_data (s)->local_dynrel);
3955 }
3956
3957 p = *head;
3958 if (p == NULL || p->sec != sec)
3959 {
3960 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3961 if (p == NULL)
3962 return FALSE;
3963 p->next = *head;
3964 *head = p;
3965 p->sec = sec;
3966 p->count = 0;
3967 p->pc_count = 0;
3968 }
3969
3970 p->count += 1;
3971 if (!MUST_BE_DYN_RELOC (r_type))
3972 p->pc_count += 1;
3973 }
3974
3975 break;
3976 }
3977 }
3978
3979 return TRUE;
3980 }
3981
3982 /* Return the section that should be marked against GC for a given
3983 relocation. */
3984
3985 static asection *
3986 ppc_elf_gc_mark_hook (asection *sec,
3987 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3988 Elf_Internal_Rela *rel,
3989 struct elf_link_hash_entry *h,
3990 Elf_Internal_Sym *sym)
3991 {
3992 if (h != NULL)
3993 {
3994 switch (ELF32_R_TYPE (rel->r_info))
3995 {
3996 case R_PPC_GNU_VTINHERIT:
3997 case R_PPC_GNU_VTENTRY:
3998 break;
3999
4000 default:
4001 switch (h->root.type)
4002 {
4003 case bfd_link_hash_defined:
4004 case bfd_link_hash_defweak:
4005 return h->root.u.def.section;
4006
4007 case bfd_link_hash_common:
4008 return h->root.u.c.p->section;
4009
4010 default:
4011 break;
4012 }
4013 }
4014 }
4015 else
4016 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4017
4018 return NULL;
4019 }
4020
4021 /* Update the got, plt and dynamic reloc reference counts for the
4022 section being removed. */
4023
4024 static bfd_boolean
4025 ppc_elf_gc_sweep_hook (bfd *abfd,
4026 struct bfd_link_info *info,
4027 asection *sec,
4028 const Elf_Internal_Rela *relocs)
4029 {
4030 struct ppc_elf_link_hash_table *htab;
4031 Elf_Internal_Shdr *symtab_hdr;
4032 struct elf_link_hash_entry **sym_hashes;
4033 bfd_signed_vma *local_got_refcounts;
4034 const Elf_Internal_Rela *rel, *relend;
4035
4036 elf_section_data (sec)->local_dynrel = NULL;
4037
4038 htab = ppc_elf_hash_table (info);
4039 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4040 sym_hashes = elf_sym_hashes (abfd);
4041 local_got_refcounts = elf_local_got_refcounts (abfd);
4042
4043 relend = relocs + sec->reloc_count;
4044 for (rel = relocs; rel < relend; rel++)
4045 {
4046 unsigned long r_symndx;
4047 enum elf_ppc_reloc_type r_type;
4048 struct elf_link_hash_entry *h = NULL;
4049
4050 r_symndx = ELF32_R_SYM (rel->r_info);
4051 if (r_symndx >= symtab_hdr->sh_info)
4052 {
4053 struct ppc_elf_dyn_relocs **pp, *p;
4054 struct ppc_elf_link_hash_entry *eh;
4055
4056 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4057 while (h->root.type == bfd_link_hash_indirect
4058 || h->root.type == bfd_link_hash_warning)
4059 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4060 eh = (struct ppc_elf_link_hash_entry *) h;
4061
4062 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4063 if (p->sec == sec)
4064 {
4065 /* Everything must go for SEC. */
4066 *pp = p->next;
4067 break;
4068 }
4069 }
4070
4071 r_type = ELF32_R_TYPE (rel->r_info);
4072 switch (r_type)
4073 {
4074 case R_PPC_GOT_TLSLD16:
4075 case R_PPC_GOT_TLSLD16_LO:
4076 case R_PPC_GOT_TLSLD16_HI:
4077 case R_PPC_GOT_TLSLD16_HA:
4078 htab->tlsld_got.refcount -= 1;
4079 /* Fall thru */
4080
4081 case R_PPC_GOT_TLSGD16:
4082 case R_PPC_GOT_TLSGD16_LO:
4083 case R_PPC_GOT_TLSGD16_HI:
4084 case R_PPC_GOT_TLSGD16_HA:
4085 case R_PPC_GOT_TPREL16:
4086 case R_PPC_GOT_TPREL16_LO:
4087 case R_PPC_GOT_TPREL16_HI:
4088 case R_PPC_GOT_TPREL16_HA:
4089 case R_PPC_GOT_DTPREL16:
4090 case R_PPC_GOT_DTPREL16_LO:
4091 case R_PPC_GOT_DTPREL16_HI:
4092 case R_PPC_GOT_DTPREL16_HA:
4093 case R_PPC_GOT16:
4094 case R_PPC_GOT16_LO:
4095 case R_PPC_GOT16_HI:
4096 case R_PPC_GOT16_HA:
4097 if (h != NULL)
4098 {
4099 if (h->got.refcount > 0)
4100 h->got.refcount--;
4101 }
4102 else if (local_got_refcounts != NULL)
4103 {
4104 if (local_got_refcounts[r_symndx] > 0)
4105 local_got_refcounts[r_symndx]--;
4106 }
4107 break;
4108
4109 case R_PPC_REL24:
4110 case R_PPC_REL14:
4111 case R_PPC_REL14_BRTAKEN:
4112 case R_PPC_REL14_BRNTAKEN:
4113 case R_PPC_REL32:
4114 if (h == NULL
4115 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4116 break;
4117 /* Fall thru */
4118
4119 case R_PPC_ADDR32:
4120 case R_PPC_ADDR24:
4121 case R_PPC_ADDR16:
4122 case R_PPC_ADDR16_LO:
4123 case R_PPC_ADDR16_HI:
4124 case R_PPC_ADDR16_HA:
4125 case R_PPC_ADDR14:
4126 case R_PPC_ADDR14_BRTAKEN:
4127 case R_PPC_ADDR14_BRNTAKEN:
4128 case R_PPC_UADDR32:
4129 case R_PPC_UADDR16:
4130 case R_PPC_PLT32:
4131 case R_PPC_PLTREL24:
4132 case R_PPC_PLT16_LO:
4133 case R_PPC_PLT16_HI:
4134 case R_PPC_PLT16_HA:
4135 if (h != NULL)
4136 {
4137 if (h->plt.refcount > 0)
4138 h->plt.refcount--;
4139 }
4140 break;
4141
4142 default:
4143 break;
4144 }
4145 }
4146 return TRUE;
4147 }
4148
4149 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4150
4151 asection *
4152 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4153 {
4154 struct ppc_elf_link_hash_table *htab;
4155
4156 htab = ppc_elf_hash_table (info);
4157 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4158 FALSE, FALSE, TRUE);
4159
4160 return _bfd_elf_tls_setup (obfd, info);
4161 }
4162
4163 /* Run through all the TLS relocs looking for optimization
4164 opportunities. */
4165
4166 bfd_boolean
4167 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4168 struct bfd_link_info *info)
4169 {
4170 bfd *ibfd;
4171 asection *sec;
4172 struct ppc_elf_link_hash_table *htab;
4173
4174 if (info->relocatable || info->shared)
4175 return TRUE;
4176
4177 htab = ppc_elf_hash_table (info);
4178 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4179 {
4180 Elf_Internal_Sym *locsyms = NULL;
4181 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4182
4183 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4184 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4185 {
4186 Elf_Internal_Rela *relstart, *rel, *relend;
4187 int expecting_tls_get_addr;
4188
4189 /* Read the relocations. */
4190 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4191 info->keep_memory);
4192 if (relstart == NULL)
4193 return FALSE;
4194
4195 expecting_tls_get_addr = 0;
4196 relend = relstart + sec->reloc_count;
4197 for (rel = relstart; rel < relend; rel++)
4198 {
4199 enum elf_ppc_reloc_type r_type;
4200 unsigned long r_symndx;
4201 struct elf_link_hash_entry *h = NULL;
4202 char *tls_mask;
4203 char tls_set, tls_clear;
4204 bfd_boolean is_local;
4205
4206 r_symndx = ELF32_R_SYM (rel->r_info);
4207 if (r_symndx >= symtab_hdr->sh_info)
4208 {
4209 struct elf_link_hash_entry **sym_hashes;
4210
4211 sym_hashes = elf_sym_hashes (ibfd);
4212 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4213 while (h->root.type == bfd_link_hash_indirect
4214 || h->root.type == bfd_link_hash_warning)
4215 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4216 }
4217
4218 is_local = FALSE;
4219 if (h == NULL
4220 || !h->def_dynamic)
4221 is_local = TRUE;
4222
4223 r_type = ELF32_R_TYPE (rel->r_info);
4224 switch (r_type)
4225 {
4226 case R_PPC_GOT_TLSLD16:
4227 case R_PPC_GOT_TLSLD16_LO:
4228 case R_PPC_GOT_TLSLD16_HI:
4229 case R_PPC_GOT_TLSLD16_HA:
4230 /* These relocs should never be against a symbol
4231 defined in a shared lib. Leave them alone if
4232 that turns out to be the case. */
4233 expecting_tls_get_addr = 0;
4234 htab->tlsld_got.refcount -= 1;
4235 if (!is_local)
4236 continue;
4237
4238 /* LD -> LE */
4239 tls_set = 0;
4240 tls_clear = TLS_LD;
4241 expecting_tls_get_addr = 1;
4242 break;
4243
4244 case R_PPC_GOT_TLSGD16:
4245 case R_PPC_GOT_TLSGD16_LO:
4246 case R_PPC_GOT_TLSGD16_HI:
4247 case R_PPC_GOT_TLSGD16_HA:
4248 if (is_local)
4249 /* GD -> LE */
4250 tls_set = 0;
4251 else
4252 /* GD -> IE */
4253 tls_set = TLS_TLS | TLS_TPRELGD;
4254 tls_clear = TLS_GD;
4255 expecting_tls_get_addr = 1;
4256 break;
4257
4258 case R_PPC_GOT_TPREL16:
4259 case R_PPC_GOT_TPREL16_LO:
4260 case R_PPC_GOT_TPREL16_HI:
4261 case R_PPC_GOT_TPREL16_HA:
4262 expecting_tls_get_addr = 0;
4263 if (is_local)
4264 {
4265 /* IE -> LE */
4266 tls_set = 0;
4267 tls_clear = TLS_TPREL;
4268 break;
4269 }
4270 else
4271 continue;
4272
4273 case R_PPC_REL14:
4274 case R_PPC_REL14_BRTAKEN:
4275 case R_PPC_REL14_BRNTAKEN:
4276 case R_PPC_REL24:
4277 if (expecting_tls_get_addr
4278 && h != NULL
4279 && h == htab->tls_get_addr)
4280 {
4281 if (h->plt.refcount > 0)
4282 h->plt.refcount -= 1;
4283 }
4284 expecting_tls_get_addr = 0;
4285 continue;
4286
4287 default:
4288 expecting_tls_get_addr = 0;
4289 continue;
4290 }
4291
4292 if (h != NULL)
4293 {
4294 if (tls_set == 0)
4295 {
4296 /* We managed to get rid of a got entry. */
4297 if (h->got.refcount > 0)
4298 h->got.refcount -= 1;
4299 }
4300 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4301 }
4302 else
4303 {
4304 Elf_Internal_Sym *sym;
4305 bfd_signed_vma *lgot_refs;
4306 char *lgot_masks;
4307
4308 if (locsyms == NULL)
4309 {
4310 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4311 if (locsyms == NULL)
4312 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4313 symtab_hdr->sh_info,
4314 0, NULL, NULL, NULL);
4315 if (locsyms == NULL)
4316 {
4317 if (elf_section_data (sec)->relocs != relstart)
4318 free (relstart);
4319 return FALSE;
4320 }
4321 }
4322 sym = locsyms + r_symndx;
4323 lgot_refs = elf_local_got_refcounts (ibfd);
4324 if (lgot_refs == NULL)
4325 abort ();
4326 if (tls_set == 0)
4327 {
4328 /* We managed to get rid of a got entry. */
4329 if (lgot_refs[r_symndx] > 0)
4330 lgot_refs[r_symndx] -= 1;
4331 }
4332 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4333 tls_mask = &lgot_masks[r_symndx];
4334 }
4335
4336 *tls_mask |= tls_set;
4337 *tls_mask &= ~tls_clear;
4338 }
4339
4340 if (elf_section_data (sec)->relocs != relstart)
4341 free (relstart);
4342 }
4343
4344 if (locsyms != NULL
4345 && (symtab_hdr->contents != (unsigned char *) locsyms))
4346 {
4347 if (!info->keep_memory)
4348 free (locsyms);
4349 else
4350 symtab_hdr->contents = (unsigned char *) locsyms;
4351 }
4352 }
4353 return TRUE;
4354 }
4355 \f
4356 /* Hook called by the linker routine which adds symbols from an object
4357 file. We use it to put .comm items in .sbss, and not .bss. */
4358
4359 static bfd_boolean
4360 ppc_elf_add_symbol_hook (bfd *abfd,
4361 struct bfd_link_info *info,
4362 Elf_Internal_Sym *sym,
4363 const char **namep ATTRIBUTE_UNUSED,
4364 flagword *flagsp ATTRIBUTE_UNUSED,
4365 asection **secp,
4366 bfd_vma *valp)
4367 {
4368 if (sym->st_shndx == SHN_COMMON
4369 && !info->relocatable
4370 && sym->st_size <= elf_gp_size (abfd)
4371 && (info->hash->creator == abfd->xvec
4372 || info->hash->creator == abfd->xvec->alternative_target))
4373 {
4374 /* Common symbols less than or equal to -G nn bytes are automatically
4375 put into .sbss. */
4376 struct ppc_elf_link_hash_table *htab;
4377
4378 htab = ppc_elf_hash_table (info);
4379 if (htab->sbss == NULL)
4380 {
4381 flagword flags = SEC_IS_COMMON;
4382
4383 htab->sbss = bfd_make_section_anyway (abfd, ".sbss");
4384 if (htab->sbss == NULL
4385 || ! bfd_set_section_flags (abfd, htab->sbss, flags))
4386 return FALSE;
4387 }
4388
4389 *secp = htab->sbss;
4390 *valp = sym->st_size;
4391 }
4392
4393 return TRUE;
4394 }
4395 \f
4396 /* Finish up dynamic symbol handling. We set the contents of various
4397 dynamic sections here. */
4398
4399 static bfd_boolean
4400 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
4401 struct bfd_link_info *info,
4402 struct elf_link_hash_entry *h,
4403 Elf_Internal_Sym *sym)
4404 {
4405 struct ppc_elf_link_hash_table *htab;
4406
4407 #ifdef DEBUG
4408 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
4409 h->root.root.string);
4410 #endif
4411
4412 htab = ppc_elf_hash_table (info);
4413 BFD_ASSERT (htab->elf.dynobj != NULL);
4414
4415 if (h->plt.offset != (bfd_vma) -1)
4416 {
4417 Elf_Internal_Rela rela;
4418 bfd_byte *loc;
4419 bfd_vma reloc_index;
4420
4421 #ifdef DEBUG
4422 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
4423 #endif
4424
4425 /* This symbol has an entry in the procedure linkage table. Set
4426 it up. */
4427
4428 BFD_ASSERT (h->dynindx != -1);
4429 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
4430
4431 /* We don't need to fill in the .plt. The ppc dynamic linker
4432 will fill it in. */
4433
4434 /* Fill in the entry in the .rela.plt section. */
4435 rela.r_offset = (htab->plt->output_section->vma
4436 + htab->plt->output_offset
4437 + h->plt.offset);
4438 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
4439 rela.r_addend = 0;
4440
4441 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
4442 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
4443 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
4444 loc = (htab->relplt->contents
4445 + reloc_index * sizeof (Elf32_External_Rela));
4446 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4447
4448 if (!h->def_regular)
4449 {
4450 /* Mark the symbol as undefined, rather than as defined in
4451 the .plt section. Leave the value alone. */
4452 sym->st_shndx = SHN_UNDEF;
4453 /* If the symbol is weak, we do need to clear the value.
4454 Otherwise, the PLT entry would provide a definition for
4455 the symbol even if the symbol wasn't defined anywhere,
4456 and so the symbol would never be NULL. */
4457 if (!h->ref_regular_nonweak)
4458 sym->st_value = 0;
4459 }
4460 }
4461
4462 if (h->needs_copy)
4463 {
4464 asection *s;
4465 Elf_Internal_Rela rela;
4466 bfd_byte *loc;
4467
4468 /* This symbols needs a copy reloc. Set it up. */
4469
4470 #ifdef DEBUG
4471 fprintf (stderr, ", copy");
4472 #endif
4473
4474 BFD_ASSERT (h->dynindx != -1);
4475
4476 if (h->size <= elf_gp_size (htab->elf.dynobj))
4477 s = htab->relsbss;
4478 else
4479 s = htab->relbss;
4480 BFD_ASSERT (s != NULL);
4481
4482 rela.r_offset = (h->root.u.def.value
4483 + h->root.u.def.section->output_section->vma
4484 + h->root.u.def.section->output_offset);
4485 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
4486 rela.r_addend = 0;
4487 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4488 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4489 }
4490
4491 #ifdef DEBUG
4492 fprintf (stderr, "\n");
4493 #endif
4494
4495 /* Mark some specially defined symbols as absolute. */
4496 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4497 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4498 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4499 sym->st_shndx = SHN_ABS;
4500
4501 return TRUE;
4502 }
4503 \f
4504 /* Finish up the dynamic sections. */
4505
4506 static bfd_boolean
4507 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
4508 struct bfd_link_info *info)
4509 {
4510 asection *sdyn;
4511 struct ppc_elf_link_hash_table *htab;
4512
4513 #ifdef DEBUG
4514 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
4515 #endif
4516
4517 htab = ppc_elf_hash_table (info);
4518 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
4519
4520 if (htab->elf.dynamic_sections_created)
4521 {
4522 Elf32_External_Dyn *dyncon, *dynconend;
4523
4524 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
4525
4526 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4527 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4528 for (; dyncon < dynconend; dyncon++)
4529 {
4530 Elf_Internal_Dyn dyn;
4531 asection *s;
4532
4533 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
4534
4535 switch (dyn.d_tag)
4536 {
4537 case DT_PLTGOT:
4538 s = htab->plt;
4539 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4540 break;
4541
4542 case DT_PLTRELSZ:
4543 dyn.d_un.d_val = htab->relplt->size;
4544 break;
4545
4546 case DT_JMPREL:
4547 s = htab->relplt;
4548 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4549 break;
4550
4551 default:
4552 continue;
4553 }
4554
4555 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4556 }
4557 }
4558
4559 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
4560 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
4561 if (htab->got)
4562 {
4563 unsigned char *contents = htab->got->contents;
4564 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
4565
4566 if (sdyn == NULL)
4567 bfd_put_32 (output_bfd, 0, contents + 4);
4568 else
4569 bfd_put_32 (output_bfd,
4570 sdyn->output_section->vma + sdyn->output_offset,
4571 contents + 4);
4572
4573 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
4574 }
4575
4576 return TRUE;
4577 }
4578 \f
4579 /* The RELOCATE_SECTION function is called by the ELF backend linker
4580 to handle the relocations for a section.
4581
4582 The relocs are always passed as Rela structures; if the section
4583 actually uses Rel structures, the r_addend field will always be
4584 zero.
4585
4586 This function is responsible for adjust the section contents as
4587 necessary, and (if using Rela relocs and generating a
4588 relocatable output file) adjusting the reloc addend as
4589 necessary.
4590
4591 This function does not have to worry about setting the reloc
4592 address or the reloc symbol index.
4593
4594 LOCAL_SYMS is a pointer to the swapped in local symbols.
4595
4596 LOCAL_SECTIONS is an array giving the section in the input file
4597 corresponding to the st_shndx field of each local symbol.
4598
4599 The global hash table entry for the global symbols can be found
4600 via elf_sym_hashes (input_bfd).
4601
4602 When generating relocatable output, this function must handle
4603 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4604 going to be the section symbol corresponding to the output
4605 section, which means that the addend must be adjusted
4606 accordingly. */
4607
4608 static bfd_boolean
4609 ppc_elf_relocate_section (bfd *output_bfd,
4610 struct bfd_link_info *info,
4611 bfd *input_bfd,
4612 asection *input_section,
4613 bfd_byte *contents,
4614 Elf_Internal_Rela *relocs,
4615 Elf_Internal_Sym *local_syms,
4616 asection **local_sections)
4617 {
4618 Elf_Internal_Shdr *symtab_hdr;
4619 struct elf_link_hash_entry **sym_hashes;
4620 struct ppc_elf_link_hash_table *htab;
4621 Elf_Internal_Rela *rel;
4622 Elf_Internal_Rela *relend;
4623 Elf_Internal_Rela outrel;
4624 bfd_byte *loc;
4625 asection *sreloc = NULL;
4626 bfd_vma *local_got_offsets;
4627 bfd_boolean ret = TRUE;
4628
4629 #ifdef DEBUG
4630 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
4631 "%ld relocations%s",
4632 input_bfd, input_section,
4633 (long) input_section->reloc_count,
4634 (info->relocatable) ? " (relocatable)" : "");
4635 #endif
4636
4637 if (info->relocatable)
4638 return TRUE;
4639
4640 /* Initialize howto table if not already done. */
4641 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4642 ppc_elf_howto_init ();
4643
4644 htab = ppc_elf_hash_table (info);
4645 local_got_offsets = elf_local_got_offsets (input_bfd);
4646 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4647 sym_hashes = elf_sym_hashes (input_bfd);
4648 rel = relocs;
4649 relend = relocs + input_section->reloc_count;
4650 for (; rel < relend; rel++)
4651 {
4652 enum elf_ppc_reloc_type r_type;
4653 bfd_vma addend;
4654 bfd_reloc_status_type r;
4655 Elf_Internal_Sym *sym;
4656 asection *sec;
4657 struct elf_link_hash_entry *h;
4658 const char *sym_name;
4659 reloc_howto_type *howto;
4660 unsigned long r_symndx;
4661 bfd_vma relocation;
4662 bfd_vma branch_bit, insn, from;
4663 bfd_boolean unresolved_reloc;
4664 bfd_boolean warned;
4665 unsigned int tls_type, tls_mask, tls_gd;
4666
4667 r_type = ELF32_R_TYPE (rel->r_info);
4668 sym = NULL;
4669 sec = NULL;
4670 h = NULL;
4671 unresolved_reloc = FALSE;
4672 warned = FALSE;
4673 r_symndx = ELF32_R_SYM (rel->r_info);
4674
4675 if (r_symndx < symtab_hdr->sh_info)
4676 {
4677 sym = local_syms + r_symndx;
4678 sec = local_sections[r_symndx];
4679 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
4680
4681 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4682 }
4683 else
4684 {
4685 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4686 r_symndx, symtab_hdr, sym_hashes,
4687 h, sec, relocation,
4688 unresolved_reloc, warned);
4689
4690 sym_name = h->root.root.string;
4691 }
4692
4693 /* TLS optimizations. Replace instruction sequences and relocs
4694 based on information we collected in tls_optimize. We edit
4695 RELOCS so that --emit-relocs will output something sensible
4696 for the final instruction stream. */
4697 tls_mask = 0;
4698 tls_gd = 0;
4699 if (IS_PPC_TLS_RELOC (r_type))
4700 {
4701 if (h != NULL)
4702 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4703 else if (local_got_offsets != NULL)
4704 {
4705 char *lgot_masks;
4706 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4707 tls_mask = lgot_masks[r_symndx];
4708 }
4709 }
4710
4711 /* Ensure reloc mapping code below stays sane. */
4712 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4713 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4714 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4715 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4716 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4717 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4718 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4719 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4720 abort ();
4721 switch (r_type)
4722 {
4723 default:
4724 break;
4725
4726 case R_PPC_GOT_TPREL16:
4727 case R_PPC_GOT_TPREL16_LO:
4728 if (tls_mask != 0
4729 && (tls_mask & TLS_TPREL) == 0)
4730 {
4731 bfd_vma insn;
4732 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4733 insn &= 31 << 21;
4734 insn |= 0x3c020000; /* addis 0,2,0 */
4735 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4736 r_type = R_PPC_TPREL16_HA;
4737 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4738 }
4739 break;
4740
4741 case R_PPC_TLS:
4742 if (tls_mask != 0
4743 && (tls_mask & TLS_TPREL) == 0)
4744 {
4745 bfd_vma insn, rtra;
4746 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4747 if ((insn & ((31 << 26) | (31 << 11)))
4748 == ((31 << 26) | (2 << 11)))
4749 rtra = insn & ((1 << 26) - (1 << 16));
4750 else if ((insn & ((31 << 26) | (31 << 16)))
4751 == ((31 << 26) | (2 << 16)))
4752 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4753 else
4754 abort ();
4755 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4756 /* add -> addi. */
4757 insn = 14 << 26;
4758 else if ((insn & (31 << 1)) == 23 << 1
4759 && ((insn & (31 << 6)) < 14 << 6
4760 || ((insn & (31 << 6)) >= 16 << 6
4761 && (insn & (31 << 6)) < 24 << 6)))
4762 /* load and store indexed -> dform. */
4763 insn = (32 | ((insn >> 6) & 31)) << 26;
4764 else if ((insn & (31 << 1)) == 21 << 1
4765 && (insn & (0x1a << 6)) == 0)
4766 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4767 insn = (((58 | ((insn >> 6) & 4)) << 26)
4768 | ((insn >> 6) & 1));
4769 else if ((insn & (31 << 1)) == 21 << 1
4770 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4771 /* lwax -> lwa. */
4772 insn = (58 << 26) | 2;
4773 else
4774 abort ();
4775 insn |= rtra;
4776 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4777 r_type = R_PPC_TPREL16_LO;
4778 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4779 /* Was PPC_TLS which sits on insn boundary, now
4780 PPC_TPREL16_LO which is at insn+2. */
4781 rel->r_offset += 2;
4782 }
4783 break;
4784
4785 case R_PPC_GOT_TLSGD16_HI:
4786 case R_PPC_GOT_TLSGD16_HA:
4787 tls_gd = TLS_TPRELGD;
4788 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4789 goto tls_gdld_hi;
4790 break;
4791
4792 case R_PPC_GOT_TLSLD16_HI:
4793 case R_PPC_GOT_TLSLD16_HA:
4794 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4795 {
4796 tls_gdld_hi:
4797 if ((tls_mask & tls_gd) != 0)
4798 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4799 + R_PPC_GOT_TPREL16);
4800 else
4801 {
4802 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4803 rel->r_offset -= 2;
4804 r_type = R_PPC_NONE;
4805 }
4806 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4807 }
4808 break;
4809
4810 case R_PPC_GOT_TLSGD16:
4811 case R_PPC_GOT_TLSGD16_LO:
4812 tls_gd = TLS_TPRELGD;
4813 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4814 goto tls_get_addr_check;
4815 break;
4816
4817 case R_PPC_GOT_TLSLD16:
4818 case R_PPC_GOT_TLSLD16_LO:
4819 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4820 {
4821 tls_get_addr_check:
4822 if (rel + 1 < relend)
4823 {
4824 enum elf_ppc_reloc_type r_type2;
4825 unsigned long r_symndx2;
4826 struct elf_link_hash_entry *h2;
4827 bfd_vma insn1, insn2;
4828 bfd_vma offset;
4829
4830 /* The next instruction should be a call to
4831 __tls_get_addr. Peek at the reloc to be sure. */
4832 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4833 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4834 if (r_symndx2 < symtab_hdr->sh_info
4835 || (r_type2 != R_PPC_REL14
4836 && r_type2 != R_PPC_REL14_BRTAKEN
4837 && r_type2 != R_PPC_REL14_BRNTAKEN
4838 && r_type2 != R_PPC_REL24
4839 && r_type2 != R_PPC_PLTREL24))
4840 break;
4841
4842 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4843 while (h2->root.type == bfd_link_hash_indirect
4844 || h2->root.type == bfd_link_hash_warning)
4845 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
4846 if (h2 == NULL || h2 != htab->tls_get_addr)
4847 break;
4848
4849 /* OK, it checks out. Replace the call. */
4850 offset = rel[1].r_offset;
4851 insn1 = bfd_get_32 (output_bfd,
4852 contents + rel->r_offset - 2);
4853 if ((tls_mask & tls_gd) != 0)
4854 {
4855 /* IE */
4856 insn1 &= (1 << 26) - 1;
4857 insn1 |= 32 << 26; /* lwz */
4858 insn2 = 0x7c631214; /* add 3,3,2 */
4859 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
4860 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4861 + R_PPC_GOT_TPREL16);
4862 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4863 }
4864 else
4865 {
4866 /* LE */
4867 insn1 = 0x3c620000; /* addis 3,2,0 */
4868 insn2 = 0x38630000; /* addi 3,3,0 */
4869 if (tls_gd == 0)
4870 {
4871 /* Was an LD reloc. */
4872 r_symndx = 0;
4873 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4874 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4875 }
4876 r_type = R_PPC_TPREL16_HA;
4877 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4878 rel[1].r_info = ELF32_R_INFO (r_symndx,
4879 R_PPC_TPREL16_LO);
4880 rel[1].r_offset += 2;
4881 }
4882 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
4883 bfd_put_32 (output_bfd, insn2, contents + offset);
4884 if (tls_gd == 0)
4885 {
4886 /* We changed the symbol on an LD reloc. Start over
4887 in order to get h, sym, sec etc. right. */
4888 rel--;
4889 continue;
4890 }
4891 }
4892 }
4893 break;
4894 }
4895
4896 /* Handle other relocations that tweak non-addend part of insn. */
4897 branch_bit = 0;
4898 switch (r_type)
4899 {
4900 default:
4901 break;
4902
4903 /* Branch taken prediction relocations. */
4904 case R_PPC_ADDR14_BRTAKEN:
4905 case R_PPC_REL14_BRTAKEN:
4906 branch_bit = BRANCH_PREDICT_BIT;
4907 /* Fall thru */
4908
4909 /* Branch not taken prediction relocations. */
4910 case R_PPC_ADDR14_BRNTAKEN:
4911 case R_PPC_REL14_BRNTAKEN:
4912 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4913 insn &= ~BRANCH_PREDICT_BIT;
4914 insn |= branch_bit;
4915
4916 from = (rel->r_offset
4917 + input_section->output_offset
4918 + input_section->output_section->vma);
4919
4920 /* Invert 'y' bit if not the default. */
4921 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
4922 insn ^= BRANCH_PREDICT_BIT;
4923
4924 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4925 break;
4926 }
4927
4928 addend = rel->r_addend;
4929 tls_type = 0;
4930 howto = NULL;
4931 if (r_type < R_PPC_max)
4932 howto = ppc_elf_howto_table[r_type];
4933 switch (r_type)
4934 {
4935 default:
4936 (*_bfd_error_handler)
4937 (_("%B: unknown relocation type %d for symbol %s"),
4938 input_bfd, (int) r_type, sym_name);
4939
4940 bfd_set_error (bfd_error_bad_value);
4941 ret = FALSE;
4942 continue;
4943
4944 case R_PPC_NONE:
4945 case R_PPC_TLS:
4946 case R_PPC_EMB_MRKREF:
4947 case R_PPC_GNU_VTINHERIT:
4948 case R_PPC_GNU_VTENTRY:
4949 continue;
4950
4951 /* GOT16 relocations. Like an ADDR16 using the symbol's
4952 address in the GOT as relocation value instead of the
4953 symbol's value itself. Also, create a GOT entry for the
4954 symbol and put the symbol value there. */
4955 case R_PPC_GOT_TLSGD16:
4956 case R_PPC_GOT_TLSGD16_LO:
4957 case R_PPC_GOT_TLSGD16_HI:
4958 case R_PPC_GOT_TLSGD16_HA:
4959 tls_type = TLS_TLS | TLS_GD;
4960 goto dogot;
4961
4962 case R_PPC_GOT_TLSLD16:
4963 case R_PPC_GOT_TLSLD16_LO:
4964 case R_PPC_GOT_TLSLD16_HI:
4965 case R_PPC_GOT_TLSLD16_HA:
4966 tls_type = TLS_TLS | TLS_LD;
4967 goto dogot;
4968
4969 case R_PPC_GOT_TPREL16:
4970 case R_PPC_GOT_TPREL16_LO:
4971 case R_PPC_GOT_TPREL16_HI:
4972 case R_PPC_GOT_TPREL16_HA:
4973 tls_type = TLS_TLS | TLS_TPREL;
4974 goto dogot;
4975
4976 case R_PPC_GOT_DTPREL16:
4977 case R_PPC_GOT_DTPREL16_LO:
4978 case R_PPC_GOT_DTPREL16_HI:
4979 case R_PPC_GOT_DTPREL16_HA:
4980 tls_type = TLS_TLS | TLS_DTPREL;
4981 goto dogot;
4982
4983 case R_PPC_GOT16:
4984 case R_PPC_GOT16_LO:
4985 case R_PPC_GOT16_HI:
4986 case R_PPC_GOT16_HA:
4987 dogot:
4988 {
4989 /* Relocation is to the entry for this symbol in the global
4990 offset table. */
4991 bfd_vma off;
4992 bfd_vma *offp;
4993 unsigned long indx;
4994
4995 if (htab->got == NULL)
4996 abort ();
4997
4998 indx = 0;
4999 if (tls_type == (TLS_TLS | TLS_LD)
5000 && (h == NULL
5001 || !h->def_dynamic))
5002 offp = &htab->tlsld_got.offset;
5003 else if (h != NULL)
5004 {
5005 bfd_boolean dyn;
5006 dyn = htab->elf.dynamic_sections_created;
5007 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5008 || (info->shared
5009 && SYMBOL_REFERENCES_LOCAL (info, h)))
5010 /* This is actually a static link, or it is a
5011 -Bsymbolic link and the symbol is defined
5012 locally, or the symbol was forced to be local
5013 because of a version file. */
5014 ;
5015 else
5016 {
5017 indx = h->dynindx;
5018 unresolved_reloc = FALSE;
5019 }
5020 offp = &h->got.offset;
5021 }
5022 else
5023 {
5024 if (local_got_offsets == NULL)
5025 abort ();
5026 offp = &local_got_offsets[r_symndx];
5027 }
5028
5029 /* The offset must always be a multiple of 4. We use the
5030 least significant bit to record whether we have already
5031 processed this entry. */
5032 off = *offp;
5033 if ((off & 1) != 0)
5034 off &= ~1;
5035 else
5036 {
5037 unsigned int tls_m = (tls_mask
5038 & (TLS_LD | TLS_GD | TLS_DTPREL
5039 | TLS_TPREL | TLS_TPRELGD));
5040
5041 if (offp == &htab->tlsld_got.offset)
5042 tls_m = TLS_LD;
5043 else if (h == NULL
5044 || !h->def_dynamic)
5045 tls_m &= ~TLS_LD;
5046
5047 /* We might have multiple got entries for this sym.
5048 Initialize them all. */
5049 do
5050 {
5051 int tls_ty = 0;
5052
5053 if ((tls_m & TLS_LD) != 0)
5054 {
5055 tls_ty = TLS_TLS | TLS_LD;
5056 tls_m &= ~TLS_LD;
5057 }
5058 else if ((tls_m & TLS_GD) != 0)
5059 {
5060 tls_ty = TLS_TLS | TLS_GD;
5061 tls_m &= ~TLS_GD;
5062 }
5063 else if ((tls_m & TLS_DTPREL) != 0)
5064 {
5065 tls_ty = TLS_TLS | TLS_DTPREL;
5066 tls_m &= ~TLS_DTPREL;
5067 }
5068 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5069 {
5070 tls_ty = TLS_TLS | TLS_TPREL;
5071 tls_m = 0;
5072 }
5073
5074 /* Generate relocs for the dynamic linker. */
5075 if ((info->shared || indx != 0)
5076 && (h == NULL
5077 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5078 || h->root.type != bfd_link_hash_undefweak))
5079 {
5080 outrel.r_offset = (htab->got->output_section->vma
5081 + htab->got->output_offset
5082 + off);
5083 outrel.r_addend = 0;
5084 if (tls_ty & (TLS_LD | TLS_GD))
5085 {
5086 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5087 if (tls_ty == (TLS_TLS | TLS_GD))
5088 {
5089 loc = htab->relgot->contents;
5090 loc += (htab->relgot->reloc_count++
5091 * sizeof (Elf32_External_Rela));
5092 bfd_elf32_swap_reloca_out (output_bfd,
5093 &outrel, loc);
5094 outrel.r_offset += 4;
5095 outrel.r_info
5096 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5097 }
5098 }
5099 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5100 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5101 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5102 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5103 else if (indx == 0)
5104 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5105 else
5106 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5107 if (indx == 0)
5108 {
5109 outrel.r_addend += relocation;
5110 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5111 outrel.r_addend -= htab->elf.tls_sec->vma;
5112 }
5113 loc = htab->relgot->contents;
5114 loc += (htab->relgot->reloc_count++
5115 * sizeof (Elf32_External_Rela));
5116 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5117 }
5118
5119 /* Init the .got section contents if we're not
5120 emitting a reloc. */
5121 else
5122 {
5123 bfd_vma value = relocation;
5124
5125 if (tls_ty == (TLS_TLS | TLS_LD))
5126 value = 1;
5127 else if (tls_ty != 0)
5128 {
5129 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5130 if (tls_ty == (TLS_TLS | TLS_TPREL))
5131 value += DTP_OFFSET - TP_OFFSET;
5132
5133 if (tls_ty == (TLS_TLS | TLS_GD))
5134 {
5135 bfd_put_32 (output_bfd, value,
5136 htab->got->contents + off + 4);
5137 value = 1;
5138 }
5139 }
5140 bfd_put_32 (output_bfd, value,
5141 htab->got->contents + off);
5142 }
5143
5144 off += 4;
5145 if (tls_ty & (TLS_LD | TLS_GD))
5146 off += 4;
5147 }
5148 while (tls_m != 0);
5149
5150 off = *offp;
5151 *offp = off | 1;
5152 }
5153
5154 if (off >= (bfd_vma) -2)
5155 abort ();
5156
5157 if ((tls_type & TLS_TLS) != 0)
5158 {
5159 if (tls_type != (TLS_TLS | TLS_LD))
5160 {
5161 if ((tls_mask & TLS_LD) != 0
5162 && !(h == NULL
5163 || !h->def_dynamic))
5164 off += 8;
5165 if (tls_type != (TLS_TLS | TLS_GD))
5166 {
5167 if ((tls_mask & TLS_GD) != 0)
5168 off += 8;
5169 if (tls_type != (TLS_TLS | TLS_DTPREL))
5170 {
5171 if ((tls_mask & TLS_DTPREL) != 0)
5172 off += 4;
5173 }
5174 }
5175 }
5176 }
5177
5178 relocation = htab->got->output_offset + off - 4;
5179
5180 /* Addends on got relocations don't make much sense.
5181 x+off@got is actually x@got+off, and since the got is
5182 generated by a hash table traversal, the value in the
5183 got at entry m+n bears little relation to the entry m. */
5184 if (addend != 0)
5185 (*_bfd_error_handler)
5186 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5187 input_bfd,
5188 input_section,
5189 (long) rel->r_offset,
5190 howto->name,
5191 sym_name);
5192 }
5193 break;
5194
5195 /* Relocations that need no special processing. */
5196 case R_PPC_LOCAL24PC:
5197 /* It makes no sense to point a local relocation
5198 at a symbol not in this object. */
5199 if (unresolved_reloc)
5200 {
5201 if (! (*info->callbacks->undefined_symbol) (info,
5202 h->root.root.string,
5203 input_bfd,
5204 input_section,
5205 rel->r_offset,
5206 TRUE))
5207 return FALSE;
5208 continue;
5209 }
5210 break;
5211
5212 case R_PPC_DTPREL16:
5213 case R_PPC_DTPREL16_LO:
5214 case R_PPC_DTPREL16_HI:
5215 case R_PPC_DTPREL16_HA:
5216 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5217 break;
5218
5219 /* Relocations that may need to be propagated if this is a shared
5220 object. */
5221 case R_PPC_TPREL16:
5222 case R_PPC_TPREL16_LO:
5223 case R_PPC_TPREL16_HI:
5224 case R_PPC_TPREL16_HA:
5225 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5226 /* The TPREL16 relocs shouldn't really be used in shared
5227 libs as they will result in DT_TEXTREL being set, but
5228 support them anyway. */
5229 goto dodyn;
5230
5231 case R_PPC_TPREL32:
5232 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5233 goto dodyn;
5234
5235 case R_PPC_DTPREL32:
5236 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5237 goto dodyn;
5238
5239 case R_PPC_DTPMOD32:
5240 relocation = 1;
5241 addend = 0;
5242 goto dodyn;
5243
5244 case R_PPC_REL24:
5245 case R_PPC_REL32:
5246 case R_PPC_REL14:
5247 case R_PPC_REL14_BRTAKEN:
5248 case R_PPC_REL14_BRNTAKEN:
5249 /* If these relocations are not to a named symbol, they can be
5250 handled right here, no need to bother the dynamic linker. */
5251 if (SYMBOL_REFERENCES_LOCAL (info, h)
5252 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5253 break;
5254 /* fall through */
5255
5256 /* Relocations that always need to be propagated if this is a shared
5257 object. */
5258 case R_PPC_ADDR32:
5259 case R_PPC_ADDR24:
5260 case R_PPC_ADDR16:
5261 case R_PPC_ADDR16_LO:
5262 case R_PPC_ADDR16_HI:
5263 case R_PPC_ADDR16_HA:
5264 case R_PPC_ADDR14:
5265 case R_PPC_ADDR14_BRTAKEN:
5266 case R_PPC_ADDR14_BRNTAKEN:
5267 case R_PPC_UADDR32:
5268 case R_PPC_UADDR16:
5269 /* r_symndx will be zero only for relocs against symbols
5270 from removed linkonce sections, or sections discarded by
5271 a linker script. */
5272 dodyn:
5273 if (r_symndx == 0)
5274 break;
5275 /* Fall thru. */
5276
5277 if ((info->shared
5278 && (h == NULL
5279 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5280 || h->root.type != bfd_link_hash_undefweak)
5281 && (MUST_BE_DYN_RELOC (r_type)
5282 || !SYMBOL_CALLS_LOCAL (info, h)))
5283 || (ELIMINATE_COPY_RELOCS
5284 && !info->shared
5285 && (input_section->flags & SEC_ALLOC) != 0
5286 && h != NULL
5287 && h->dynindx != -1
5288 && !h->non_got_ref
5289 && h->def_dynamic
5290 && !h->def_regular))
5291 {
5292 int skip;
5293
5294 #ifdef DEBUG
5295 fprintf (stderr, "ppc_elf_relocate_section needs to "
5296 "create relocation for %s\n",
5297 (h && h->root.root.string
5298 ? h->root.root.string : "<unknown>"));
5299 #endif
5300
5301 /* When generating a shared object, these relocations
5302 are copied into the output file to be resolved at run
5303 time. */
5304 if (sreloc == NULL)
5305 {
5306 const char *name;
5307
5308 name = (bfd_elf_string_from_elf_section
5309 (input_bfd,
5310 elf_elfheader (input_bfd)->e_shstrndx,
5311 elf_section_data (input_section)->rel_hdr.sh_name));
5312 if (name == NULL)
5313 return FALSE;
5314
5315 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5316 && strcmp (bfd_get_section_name (input_bfd,
5317 input_section),
5318 name + 5) == 0);
5319
5320 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5321 BFD_ASSERT (sreloc != NULL);
5322 }
5323
5324 skip = 0;
5325
5326 outrel.r_offset =
5327 _bfd_elf_section_offset (output_bfd, info, input_section,
5328 rel->r_offset);
5329 if (outrel.r_offset == (bfd_vma) -1
5330 || outrel.r_offset == (bfd_vma) -2)
5331 skip = (int) outrel.r_offset;
5332 outrel.r_offset += (input_section->output_section->vma
5333 + input_section->output_offset);
5334
5335 if (skip)
5336 memset (&outrel, 0, sizeof outrel);
5337 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5338 {
5339 unresolved_reloc = FALSE;
5340 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5341 outrel.r_addend = rel->r_addend;
5342 }
5343 else
5344 {
5345 outrel.r_addend = relocation + rel->r_addend;
5346
5347 if (r_type == R_PPC_ADDR32)
5348 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5349 else
5350 {
5351 long indx;
5352
5353 if (bfd_is_abs_section (sec))
5354 indx = 0;
5355 else if (sec == NULL || sec->owner == NULL)
5356 {
5357 bfd_set_error (bfd_error_bad_value);
5358 return FALSE;
5359 }
5360 else
5361 {
5362 asection *osec;
5363
5364 /* We are turning this relocation into one
5365 against a section symbol. It would be
5366 proper to subtract the symbol's value,
5367 osec->vma, from the emitted reloc addend,
5368 but ld.so expects buggy relocs. */
5369 osec = sec->output_section;
5370 indx = elf_section_data (osec)->dynindx;
5371 BFD_ASSERT (indx > 0);
5372 #ifdef DEBUG
5373 if (indx <= 0)
5374 printf ("indx=%d section=%s flags=%08x name=%s\n",
5375 indx, osec->name, osec->flags,
5376 h->root.root.string);
5377 #endif
5378 }
5379
5380 outrel.r_info = ELF32_R_INFO (indx, r_type);
5381 }
5382 }
5383
5384 loc = sreloc->contents;
5385 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5386 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5387
5388 if (skip == -1)
5389 continue;
5390
5391 /* This reloc will be computed at runtime. We clear the memory
5392 so that it contains predictable value. */
5393 if (! skip
5394 && ((input_section->flags & SEC_ALLOC) != 0
5395 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5396 {
5397 relocation = howto->pc_relative ? outrel.r_offset : 0;
5398 addend = 0;
5399 break;
5400 }
5401 }
5402 break;
5403
5404 case R_PPC_RELAX32PC_PLT:
5405 case R_PPC_RELAX32_PLT:
5406 BFD_ASSERT (h != NULL
5407 && h->plt.offset != (bfd_vma) -1
5408 && htab->plt != NULL);
5409
5410 relocation = (htab->plt->output_section->vma
5411 + htab->plt->output_offset
5412 + h->plt.offset);
5413 if (r_type == R_PPC_RELAX32_PLT)
5414 goto relax32;
5415 /* Fall thru */
5416
5417 case R_PPC_RELAX32PC:
5418 relocation -= (input_section->output_section->vma
5419 + input_section->output_offset
5420 + rel->r_offset - 4);
5421 /* Fall thru */
5422
5423 case R_PPC_RELAX32:
5424 relax32:
5425 {
5426 unsigned long t0;
5427 unsigned long t1;
5428
5429 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5430 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5431
5432 /* We're clearing the bits for R_PPC_ADDR16_HA
5433 and R_PPC_ADDR16_LO here. */
5434 t0 &= ~0xffff;
5435 t1 &= ~0xffff;
5436
5437 /* t0 is HA, t1 is LO */
5438 relocation += addend;
5439 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5440 t1 |= relocation & 0xffff;
5441
5442 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5443 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5444 }
5445 continue;
5446
5447 /* Indirect .sdata relocation. */
5448 case R_PPC_EMB_SDAI16:
5449 BFD_ASSERT (htab->sdata != NULL);
5450 relocation
5451 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5452 htab->sdata, h, relocation,
5453 rel, R_PPC_RELATIVE);
5454 break;
5455
5456 /* Indirect .sdata2 relocation. */
5457 case R_PPC_EMB_SDA2I16:
5458 BFD_ASSERT (htab->sdata2 != NULL);
5459 relocation
5460 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5461 htab->sdata2, h, relocation,
5462 rel, R_PPC_RELATIVE);
5463 break;
5464
5465 /* Handle the TOC16 reloc. We want to use the offset within the .got
5466 section, not the actual VMA. This is appropriate when generating
5467 an embedded ELF object, for which the .got section acts like the
5468 AIX .toc section. */
5469 case R_PPC_TOC16: /* phony GOT16 relocations */
5470 BFD_ASSERT (sec != NULL);
5471 BFD_ASSERT (bfd_is_und_section (sec)
5472 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
5473 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
5474
5475 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
5476 break;
5477
5478 case R_PPC_PLTREL24:
5479 /* Relocation is to the entry for this symbol in the
5480 procedure linkage table. */
5481 BFD_ASSERT (h != NULL);
5482
5483 if (h->plt.offset == (bfd_vma) -1
5484 || htab->plt == NULL)
5485 {
5486 /* We didn't make a PLT entry for this symbol. This
5487 happens when statically linking PIC code, or when
5488 using -Bsymbolic. */
5489 break;
5490 }
5491
5492 unresolved_reloc = FALSE;
5493 relocation = (htab->plt->output_section->vma
5494 + htab->plt->output_offset
5495 + h->plt.offset);
5496 break;
5497
5498 /* Relocate against _SDA_BASE_. */
5499 case R_PPC_SDAREL16:
5500 {
5501 const char *name;
5502 const struct elf_link_hash_entry *sh;
5503
5504 BFD_ASSERT (sec != NULL);
5505 name = bfd_get_section_name (abfd, sec->output_section);
5506 if (! ((strncmp (name, ".sdata", 6) == 0
5507 && (name[6] == 0 || name[6] == '.'))
5508 || (strncmp (name, ".sbss", 5) == 0
5509 && (name[5] == 0 || name[5] == '.'))))
5510 {
5511 (*_bfd_error_handler)
5512 (_("%B: the target (%s) of a %s relocation is "
5513 "in the wrong output section (%s)"),
5514 input_bfd,
5515 sym_name,
5516 howto->name,
5517 name);
5518 }
5519 sh = htab->sdata->sym_hash;
5520 addend -= (sh->root.u.def.value
5521 + sh->root.u.def.section->output_section->vma
5522 + sh->root.u.def.section->output_offset);
5523 }
5524 break;
5525
5526 /* Relocate against _SDA2_BASE_. */
5527 case R_PPC_EMB_SDA2REL:
5528 {
5529 const char *name;
5530 const struct elf_link_hash_entry *sh;
5531
5532 BFD_ASSERT (sec != NULL);
5533 name = bfd_get_section_name (abfd, sec->output_section);
5534 if (! (strncmp (name, ".sdata2", 7) == 0
5535 || strncmp (name, ".sbss2", 6) == 0))
5536 {
5537 (*_bfd_error_handler)
5538 (_("%B: the target (%s) of a %s relocation is "
5539 "in the wrong output section (%s)"),
5540 input_bfd,
5541 sym_name,
5542 howto->name,
5543 name);
5544
5545 bfd_set_error (bfd_error_bad_value);
5546 ret = FALSE;
5547 continue;
5548 }
5549 sh = htab->sdata2->sym_hash;
5550 addend -= (sh->root.u.def.value
5551 + sh->root.u.def.section->output_section->vma
5552 + sh->root.u.def.section->output_offset);
5553 }
5554 break;
5555
5556 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
5557 case R_PPC_EMB_SDA21:
5558 case R_PPC_EMB_RELSDA:
5559 {
5560 const char *name;
5561 const struct elf_link_hash_entry *sh;
5562 int reg;
5563
5564 BFD_ASSERT (sec != NULL);
5565 name = bfd_get_section_name (abfd, sec->output_section);
5566 if (((strncmp (name, ".sdata", 6) == 0
5567 && (name[6] == 0 || name[6] == '.'))
5568 || (strncmp (name, ".sbss", 5) == 0
5569 && (name[5] == 0 || name[5] == '.'))))
5570 {
5571 reg = 13;
5572 sh = htab->sdata->sym_hash;
5573 addend -= (sh->root.u.def.value
5574 + sh->root.u.def.section->output_section->vma
5575 + sh->root.u.def.section->output_offset);
5576 }
5577
5578 else if (strncmp (name, ".sdata2", 7) == 0
5579 || strncmp (name, ".sbss2", 6) == 0)
5580 {
5581 reg = 2;
5582 sh = htab->sdata2->sym_hash;
5583 addend -= (sh->root.u.def.value
5584 + sh->root.u.def.section->output_section->vma
5585 + sh->root.u.def.section->output_offset);
5586 }
5587
5588 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5589 || strcmp (name, ".PPC.EMB.sbss0") == 0)
5590 {
5591 reg = 0;
5592 }
5593
5594 else
5595 {
5596 (*_bfd_error_handler)
5597 (_("%B: the target (%s) of a %s relocation is "
5598 "in the wrong output section (%s)"),
5599 input_bfd,
5600 sym_name,
5601 howto->name,
5602 name);
5603
5604 bfd_set_error (bfd_error_bad_value);
5605 ret = FALSE;
5606 continue;
5607 }
5608
5609 if (r_type == R_PPC_EMB_SDA21)
5610 { /* fill in register field */
5611 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5612 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
5613 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5614 }
5615 }
5616 break;
5617
5618 /* Relocate against the beginning of the section. */
5619 case R_PPC_SECTOFF:
5620 case R_PPC_SECTOFF_LO:
5621 case R_PPC_SECTOFF_HI:
5622 case R_PPC_SECTOFF_HA:
5623 BFD_ASSERT (sec != NULL);
5624 addend -= sec->output_section->vma;
5625 break;
5626
5627 /* Negative relocations. */
5628 case R_PPC_EMB_NADDR32:
5629 case R_PPC_EMB_NADDR16:
5630 case R_PPC_EMB_NADDR16_LO:
5631 case R_PPC_EMB_NADDR16_HI:
5632 case R_PPC_EMB_NADDR16_HA:
5633 addend -= 2 * relocation;
5634 break;
5635
5636 case R_PPC_COPY:
5637 case R_PPC_GLOB_DAT:
5638 case R_PPC_JMP_SLOT:
5639 case R_PPC_RELATIVE:
5640 case R_PPC_PLT32:
5641 case R_PPC_PLTREL32:
5642 case R_PPC_PLT16_LO:
5643 case R_PPC_PLT16_HI:
5644 case R_PPC_PLT16_HA:
5645 case R_PPC_ADDR30:
5646 case R_PPC_EMB_RELSEC16:
5647 case R_PPC_EMB_RELST_LO:
5648 case R_PPC_EMB_RELST_HI:
5649 case R_PPC_EMB_RELST_HA:
5650 case R_PPC_EMB_BIT_FLD:
5651 (*_bfd_error_handler)
5652 (_("%B: relocation %s is not yet supported for symbol %s."),
5653 input_bfd,
5654 howto->name,
5655 sym_name);
5656
5657 bfd_set_error (bfd_error_invalid_operation);
5658 ret = FALSE;
5659 continue;
5660 }
5661
5662 /* Do any further special processing. */
5663 switch (r_type)
5664 {
5665 default:
5666 break;
5667
5668 case R_PPC_ADDR16_HA:
5669 case R_PPC_GOT16_HA:
5670 case R_PPC_PLT16_HA:
5671 case R_PPC_SECTOFF_HA:
5672 case R_PPC_TPREL16_HA:
5673 case R_PPC_DTPREL16_HA:
5674 case R_PPC_GOT_TLSGD16_HA:
5675 case R_PPC_GOT_TLSLD16_HA:
5676 case R_PPC_GOT_TPREL16_HA:
5677 case R_PPC_GOT_DTPREL16_HA:
5678 case R_PPC_EMB_NADDR16_HA:
5679 case R_PPC_EMB_RELST_HA:
5680 /* It's just possible that this symbol is a weak symbol
5681 that's not actually defined anywhere. In that case,
5682 'sec' would be NULL, and we should leave the symbol
5683 alone (it will be set to zero elsewhere in the link). */
5684 if (sec != NULL)
5685 /* Add 0x10000 if sign bit in 0:15 is set.
5686 Bits 0:15 are not used. */
5687 addend += 0x8000;
5688 break;
5689 }
5690
5691 #ifdef DEBUG
5692 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5693 "offset = %ld, addend = %ld\n",
5694 howto->name,
5695 (int) r_type,
5696 sym_name,
5697 r_symndx,
5698 (long) rel->r_offset,
5699 (long) addend);
5700 #endif
5701
5702 if (unresolved_reloc
5703 && !((input_section->flags & SEC_DEBUGGING) != 0
5704 && h->def_dynamic))
5705 {
5706 (*_bfd_error_handler)
5707 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5708 input_bfd,
5709 input_section,
5710 (long) rel->r_offset,
5711 howto->name,
5712 sym_name);
5713 ret = FALSE;
5714 }
5715
5716 r = _bfd_final_link_relocate (howto,
5717 input_bfd,
5718 input_section,
5719 contents,
5720 rel->r_offset,
5721 relocation,
5722 addend);
5723
5724 if (r != bfd_reloc_ok)
5725 {
5726 if (sym_name == NULL)
5727 sym_name = "(null)";
5728 if (r == bfd_reloc_overflow)
5729 {
5730 if (warned)
5731 continue;
5732 if (h != NULL
5733 && h->root.type == bfd_link_hash_undefweak
5734 && howto->pc_relative)
5735 {
5736 /* Assume this is a call protected by other code that
5737 detect the symbol is undefined. If this is the case,
5738 we can safely ignore the overflow. If not, the
5739 program is hosed anyway, and a little warning isn't
5740 going to help. */
5741
5742 continue;
5743 }
5744
5745 if (! (*info->callbacks->reloc_overflow) (info,
5746 (h ? &h->root : NULL),
5747 sym_name,
5748 howto->name,
5749 rel->r_addend,
5750 input_bfd,
5751 input_section,
5752 rel->r_offset))
5753 return FALSE;
5754 }
5755 else
5756 {
5757 (*_bfd_error_handler)
5758 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
5759 input_bfd, input_section,
5760 (long) rel->r_offset, howto->name, sym_name, (int) r);
5761 ret = FALSE;
5762 }
5763 }
5764 }
5765
5766 #ifdef DEBUG
5767 fprintf (stderr, "\n");
5768 #endif
5769
5770 return ret;
5771 }
5772
5773 static enum elf_reloc_type_class
5774 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5775 {
5776 switch (ELF32_R_TYPE (rela->r_info))
5777 {
5778 case R_PPC_RELATIVE:
5779 return reloc_class_relative;
5780 case R_PPC_REL24:
5781 case R_PPC_ADDR24:
5782 case R_PPC_JMP_SLOT:
5783 return reloc_class_plt;
5784 case R_PPC_COPY:
5785 return reloc_class_copy;
5786 default:
5787 return reloc_class_normal;
5788 }
5789 }
5790 \f
5791 /* Support for core dump NOTE sections. */
5792
5793 static bfd_boolean
5794 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5795 {
5796 int offset;
5797 unsigned int size;
5798
5799 switch (note->descsz)
5800 {
5801 default:
5802 return FALSE;
5803
5804 case 268: /* Linux/PPC. */
5805 /* pr_cursig */
5806 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5807
5808 /* pr_pid */
5809 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5810
5811 /* pr_reg */
5812 offset = 72;
5813 size = 192;
5814
5815 break;
5816 }
5817
5818 /* Make a ".reg/999" section. */
5819 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5820 size, note->descpos + offset);
5821 }
5822
5823 static bfd_boolean
5824 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5825 {
5826 switch (note->descsz)
5827 {
5828 default:
5829 return FALSE;
5830
5831 case 128: /* Linux/PPC elf_prpsinfo. */
5832 elf_tdata (abfd)->core_program
5833 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
5834 elf_tdata (abfd)->core_command
5835 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
5836 }
5837
5838 /* Note that for some reason, a spurious space is tacked
5839 onto the end of the args in some (at least one anyway)
5840 implementations, so strip it off if it exists. */
5841
5842 {
5843 char *command = elf_tdata (abfd)->core_command;
5844 int n = strlen (command);
5845
5846 if (0 < n && command[n - 1] == ' ')
5847 command[n - 1] = '\0';
5848 }
5849
5850 return TRUE;
5851 }
5852 \f
5853 /* Very simple linked list structure for recording apuinfo values. */
5854 typedef struct apuinfo_list
5855 {
5856 struct apuinfo_list *next;
5857 unsigned long value;
5858 }
5859 apuinfo_list;
5860
5861 static apuinfo_list *head;
5862
5863
5864 static void
5865 apuinfo_list_init (void)
5866 {
5867 head = NULL;
5868 }
5869
5870 static void
5871 apuinfo_list_add (unsigned long value)
5872 {
5873 apuinfo_list *entry = head;
5874
5875 while (entry != NULL)
5876 {
5877 if (entry->value == value)
5878 return;
5879 entry = entry->next;
5880 }
5881
5882 entry = bfd_malloc (sizeof (* entry));
5883 if (entry == NULL)
5884 return;
5885
5886 entry->value = value;
5887 entry->next = head;
5888 head = entry;
5889 }
5890
5891 static unsigned
5892 apuinfo_list_length (void)
5893 {
5894 apuinfo_list *entry;
5895 unsigned long count;
5896
5897 for (entry = head, count = 0;
5898 entry;
5899 entry = entry->next)
5900 ++ count;
5901
5902 return count;
5903 }
5904
5905 static inline unsigned long
5906 apuinfo_list_element (unsigned long number)
5907 {
5908 apuinfo_list * entry;
5909
5910 for (entry = head;
5911 entry && number --;
5912 entry = entry->next)
5913 ;
5914
5915 return entry ? entry->value : 0;
5916 }
5917
5918 static void
5919 apuinfo_list_finish (void)
5920 {
5921 apuinfo_list *entry;
5922
5923 for (entry = head; entry;)
5924 {
5925 apuinfo_list *next = entry->next;
5926 free (entry);
5927 entry = next;
5928 }
5929
5930 head = NULL;
5931 }
5932
5933 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
5934 #define APUINFO_LABEL "APUinfo"
5935
5936 /* Scan the input BFDs and create a linked list of
5937 the APUinfo values that will need to be emitted. */
5938
5939 static void
5940 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
5941 {
5942 bfd *ibfd;
5943 asection *asec;
5944 char *buffer;
5945 unsigned num_input_sections;
5946 bfd_size_type output_section_size;
5947 unsigned i;
5948 unsigned num_entries;
5949 unsigned long offset;
5950 unsigned long length;
5951 const char *error_message = NULL;
5952
5953 if (link_info == NULL)
5954 return;
5955
5956 /* Scan the input bfds, looking for apuinfo sections. */
5957 num_input_sections = 0;
5958 output_section_size = 0;
5959
5960 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
5961 {
5962 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
5963 if (asec)
5964 {
5965 ++ num_input_sections;
5966 output_section_size += asec->size;
5967 }
5968 }
5969
5970 /* We need at least one input sections
5971 in order to make merging worthwhile. */
5972 if (num_input_sections < 1)
5973 return;
5974
5975 /* Just make sure that the output section exists as well. */
5976 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
5977 if (asec == NULL)
5978 return;
5979
5980 /* Allocate a buffer for the contents of the input sections. */
5981 buffer = bfd_malloc (output_section_size);
5982 if (buffer == NULL)
5983 return;
5984
5985 offset = 0;
5986 apuinfo_list_init ();
5987
5988 /* Read in the input sections contents. */
5989 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
5990 {
5991 unsigned long datum;
5992 char *ptr;
5993
5994 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
5995 if (asec == NULL)
5996 continue;
5997
5998 length = asec->size;
5999 if (length < 24)
6000 {
6001 error_message = _("corrupt or empty %s section in %B");
6002 goto fail;
6003 }
6004
6005 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
6006 || (bfd_bread (buffer + offset, length, ibfd) != length))
6007 {
6008 error_message = _("unable to read in %s section from %B");
6009 goto fail;
6010 }
6011
6012 /* Process the contents of the section. */
6013 ptr = buffer + offset;
6014 error_message = _("corrupt %s section in %B");
6015
6016 /* Verify the contents of the header. Note - we have to
6017 extract the values this way in order to allow for a
6018 host whose endian-ness is different from the target. */
6019 datum = bfd_get_32 (ibfd, ptr);
6020 if (datum != sizeof APUINFO_LABEL)
6021 goto fail;
6022
6023 datum = bfd_get_32 (ibfd, ptr + 8);
6024 if (datum != 0x2)
6025 goto fail;
6026
6027 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
6028 goto fail;
6029
6030 /* Get the number of bytes used for apuinfo entries. */
6031 datum = bfd_get_32 (ibfd, ptr + 4);
6032 if (datum + 20 != length)
6033 goto fail;
6034
6035 /* Make sure that we do not run off the end of the section. */
6036 if (offset + length > output_section_size)
6037 goto fail;
6038
6039 /* Scan the apuinfo section, building a list of apuinfo numbers. */
6040 for (i = 0; i < datum; i += 4)
6041 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
6042
6043 /* Update the offset. */
6044 offset += length;
6045 }
6046
6047 error_message = NULL;
6048
6049 /* Compute the size of the output section. */
6050 num_entries = apuinfo_list_length ();
6051 output_section_size = 20 + num_entries * 4;
6052
6053 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
6054
6055 if (! bfd_set_section_size (abfd, asec, output_section_size))
6056 ibfd = abfd,
6057 error_message = _("warning: unable to set size of %s section in %B");
6058
6059 fail:
6060 free (buffer);
6061
6062 if (error_message)
6063 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
6064 }
6065
6066
6067 /* Prevent the output section from accumulating the input sections'
6068 contents. We have already stored this in our linked list structure. */
6069
6070 static bfd_boolean
6071 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
6072 asection *asec,
6073 bfd_byte *contents ATTRIBUTE_UNUSED)
6074 {
6075 return (apuinfo_list_length ()
6076 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
6077 }
6078
6079
6080 /* Finally we can generate the output section. */
6081
6082 static void
6083 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
6084 {
6085 bfd_byte *buffer;
6086 asection *asec;
6087 unsigned i;
6088 unsigned num_entries;
6089 bfd_size_type length;
6090
6091 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
6092 if (asec == NULL)
6093 return;
6094
6095 if (apuinfo_list_length () == 0)
6096 return;
6097
6098 length = asec->size;
6099 if (length < 20)
6100 return;
6101
6102 buffer = bfd_malloc (length);
6103 if (buffer == NULL)
6104 {
6105 (*_bfd_error_handler)
6106 (_("failed to allocate space for new APUinfo section."));
6107 return;
6108 }
6109
6110 /* Create the apuinfo header. */
6111 num_entries = apuinfo_list_length ();
6112 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
6113 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
6114 bfd_put_32 (abfd, 0x2, buffer + 8);
6115 strcpy ((char *) buffer + 12, APUINFO_LABEL);
6116
6117 length = 20;
6118 for (i = 0; i < num_entries; i++)
6119 {
6120 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
6121 length += 4;
6122 }
6123
6124 if (length != asec->size)
6125 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
6126
6127 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
6128 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
6129
6130 free (buffer);
6131
6132 apuinfo_list_finish ();
6133 }
6134
6135 /* Return address for Ith PLT stub in section PLT, for relocation REL
6136 or (bfd_vma) -1 if it should not be included. */
6137
6138 static bfd_vma
6139 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
6140 const asection *plt ATTRIBUTE_UNUSED,
6141 const arelent *rel)
6142 {
6143 return rel->address;
6144 }
6145
6146 /* Add extra PPC sections -- Note, for now, make .sbss2 and
6147 .PPC.EMB.sbss0 a normal section, and not a bss section so
6148 that the linker doesn't crater when trying to make more than
6149 2 sections. */
6150
6151 static struct bfd_elf_special_section const ppc_elf_special_sections[]=
6152 {
6153 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
6154 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
6155 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
6156 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
6157 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
6158 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
6159 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
6160 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
6161 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
6162 { NULL, 0, 0, 0, 0 }
6163 };
6164 \f
6165 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6166 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6167 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6168 #define TARGET_BIG_NAME "elf32-powerpc"
6169 #define ELF_ARCH bfd_arch_powerpc
6170 #define ELF_MACHINE_CODE EM_PPC
6171 #ifdef __QNXTARGET__
6172 #define ELF_MAXPAGESIZE 0x1000
6173 #else
6174 #define ELF_MAXPAGESIZE 0x10000
6175 #endif
6176 #define ELF_MINPAGESIZE 0x1000
6177 #define elf_info_to_howto ppc_elf_info_to_howto
6178
6179 #ifdef EM_CYGNUS_POWERPC
6180 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6181 #endif
6182
6183 #ifdef EM_PPC_OLD
6184 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6185 #endif
6186
6187 #define elf_backend_plt_not_loaded 1
6188 #define elf_backend_got_symbol_offset 4
6189 #define elf_backend_can_gc_sections 1
6190 #define elf_backend_can_refcount 1
6191 #define elf_backend_got_header_size 12
6192 #define elf_backend_rela_normal 1
6193
6194 #define bfd_elf32_mkobject ppc_elf_mkobject
6195 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6196 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6197 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6198 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6199 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6200
6201 #define elf_backend_object_p ppc_elf_object_p
6202 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6203 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6204 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6205 #define elf_backend_relocate_section ppc_elf_relocate_section
6206 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6207 #define elf_backend_check_relocs ppc_elf_check_relocs
6208 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6209 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6210 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6211 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6212 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6213 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6214 #define elf_backend_fake_sections ppc_elf_fake_sections
6215 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6216 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6217 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6218 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6219 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6220 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6221 #define elf_backend_write_section ppc_elf_write_section
6222 #define elf_backend_special_sections ppc_elf_special_sections
6223 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6224
6225 #include "elf32-target.h"