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merge from gcc
[binutils.git] / bfd / elf32-ppc.c
blobc7d48aa910a2d3a0e3d7b7cde406b758949fa7e3
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 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->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
333 /* If called to transfer flags for a weakdef during processing
334 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
335 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
336 dir->elf_link_hash_flags |=
337 (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
338 | ELF_LINK_HASH_REF_REGULAR
339 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
340 | ELF_LINK_HASH_NEEDS_PLT));
341 else
342 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
343 }
344 \f
345 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
346
347 static reloc_howto_type ppc_elf_howto_raw[] = {
348 /* This reloc does nothing. */
349 HOWTO (R_PPC_NONE, /* type */
350 0, /* rightshift */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
352 32, /* bitsize */
353 FALSE, /* pc_relative */
354 0, /* bitpos */
355 complain_overflow_bitfield, /* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_PPC_NONE", /* name */
358 FALSE, /* partial_inplace */
359 0, /* src_mask */
360 0, /* dst_mask */
361 FALSE), /* pcrel_offset */
362
363 /* A standard 32 bit relocation. */
364 HOWTO (R_PPC_ADDR32, /* type */
365 0, /* rightshift */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
367 32, /* bitsize */
368 FALSE, /* pc_relative */
369 0, /* bitpos */
370 complain_overflow_bitfield, /* complain_on_overflow */
371 bfd_elf_generic_reloc, /* special_function */
372 "R_PPC_ADDR32", /* name */
373 FALSE, /* partial_inplace */
374 0, /* src_mask */
375 0xffffffff, /* dst_mask */
376 FALSE), /* pcrel_offset */
377
378 /* An absolute 26 bit branch; the lower two bits must be zero.
379 FIXME: we don't check that, we just clear them. */
380 HOWTO (R_PPC_ADDR24, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 26, /* bitsize */
384 FALSE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_PPC_ADDR24", /* name */
389 FALSE, /* partial_inplace */
390 0, /* src_mask */
391 0x3fffffc, /* dst_mask */
392 FALSE), /* pcrel_offset */
393
394 /* A standard 16 bit relocation. */
395 HOWTO (R_PPC_ADDR16, /* type */
396 0, /* rightshift */
397 1, /* size (0 = byte, 1 = short, 2 = long) */
398 16, /* bitsize */
399 FALSE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_bitfield, /* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_PPC_ADDR16", /* name */
404 FALSE, /* partial_inplace */
405 0, /* src_mask */
406 0xffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
408
409 /* A 16 bit relocation without overflow. */
410 HOWTO (R_PPC_ADDR16_LO, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_dont,/* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_PPC_ADDR16_LO", /* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* The high order 16 bits of an address. */
425 HOWTO (R_PPC_ADDR16_HI, /* type */
426 16, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 FALSE, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_ADDR16_HI", /* name */
434 FALSE, /* partial_inplace */
435 0, /* src_mask */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
438
439 /* The high order 16 bits of an address, plus 1 if the contents of
440 the low 16 bits, treated as a signed number, is negative. */
441 HOWTO (R_PPC_ADDR16_HA, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
445 FALSE, /* pc_relative */
446 0, /* bitpos */
447 complain_overflow_dont, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_ADDR16_HA", /* name */
450 FALSE, /* partial_inplace */
451 0, /* src_mask */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
454
455 /* An absolute 16 bit branch; the lower two bits must be zero.
456 FIXME: we don't check that, we just clear them. */
457 HOWTO (R_PPC_ADDR14, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_bitfield, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_ADDR14", /* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 0xfffc, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* An absolute 16 bit branch, for which bit 10 should be set to
472 indicate that the branch is expected to be taken. The lower two
473 bits must be zero. */
474 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 16, /* bitsize */
478 FALSE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_bitfield, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC_ADDR14_BRTAKEN",/* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0xfffc, /* dst_mask */
486 FALSE), /* pcrel_offset */
487
488 /* An absolute 16 bit branch, for which bit 10 should be set to
489 indicate that the branch is not expected to be taken. The lower
490 two bits must be zero. */
491 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
492 0, /* rightshift */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_PPC_ADDR14_BRNTAKEN",/* name */
500 FALSE, /* partial_inplace */
501 0, /* src_mask */
502 0xfffc, /* dst_mask */
503 FALSE), /* pcrel_offset */
504
505 /* A relative 26 bit branch; the lower two bits must be zero. */
506 HOWTO (R_PPC_REL24, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 26, /* bitsize */
510 TRUE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_signed, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_PPC_REL24", /* name */
515 FALSE, /* partial_inplace */
516 0, /* src_mask */
517 0x3fffffc, /* dst_mask */
518 TRUE), /* pcrel_offset */
519
520 /* A relative 16 bit branch; the lower two bits must be zero. */
521 HOWTO (R_PPC_REL14, /* type */
522 0, /* rightshift */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 16, /* bitsize */
525 TRUE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_signed, /* complain_on_overflow */
528 bfd_elf_generic_reloc, /* special_function */
529 "R_PPC_REL14", /* name */
530 FALSE, /* partial_inplace */
531 0, /* src_mask */
532 0xfffc, /* dst_mask */
533 TRUE), /* pcrel_offset */
534
535 /* A relative 16 bit branch. Bit 10 should be set to indicate that
536 the branch is expected to be taken. The lower two bits must be
537 zero. */
538 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 16, /* bitsize */
542 TRUE, /* pc_relative */
543 0, /* bitpos */
544 complain_overflow_signed, /* complain_on_overflow */
545 bfd_elf_generic_reloc, /* special_function */
546 "R_PPC_REL14_BRTAKEN", /* name */
547 FALSE, /* partial_inplace */
548 0, /* src_mask */
549 0xfffc, /* dst_mask */
550 TRUE), /* pcrel_offset */
551
552 /* A relative 16 bit branch. Bit 10 should be set to indicate that
553 the branch is not expected to be taken. The lower two bits must
554 be zero. */
555 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
556 0, /* rightshift */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
558 16, /* bitsize */
559 TRUE, /* pc_relative */
560 0, /* bitpos */
561 complain_overflow_signed, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_PPC_REL14_BRNTAKEN",/* name */
564 FALSE, /* partial_inplace */
565 0, /* src_mask */
566 0xfffc, /* dst_mask */
567 TRUE), /* pcrel_offset */
568
569 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
570 symbol. */
571 HOWTO (R_PPC_GOT16, /* type */
572 0, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 16, /* bitsize */
575 FALSE, /* pc_relative */
576 0, /* bitpos */
577 complain_overflow_signed, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_GOT16", /* name */
580 FALSE, /* partial_inplace */
581 0, /* src_mask */
582 0xffff, /* dst_mask */
583 FALSE), /* pcrel_offset */
584
585 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
586 the symbol. */
587 HOWTO (R_PPC_GOT16_LO, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
591 FALSE, /* pc_relative */
592 0, /* bitpos */
593 complain_overflow_dont, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_GOT16_LO", /* name */
596 FALSE, /* partial_inplace */
597 0, /* src_mask */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
602 the symbol. */
603 HOWTO (R_PPC_GOT16_HI, /* type */
604 16, /* rightshift */
605 1, /* size (0 = byte, 1 = short, 2 = long) */
606 16, /* bitsize */
607 FALSE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_bitfield, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_GOT16_HI", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffff, /* dst_mask */
615 FALSE), /* pcrel_offset */
616
617 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
618 the symbol. */
619 HOWTO (R_PPC_GOT16_HA, /* type */
620 16, /* rightshift */
621 1, /* size (0 = byte, 1 = short, 2 = long) */
622 16, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_bitfield, /* complain_on_overflow */
626 ppc_elf_addr16_ha_reloc, /* special_function */
627 "R_PPC_GOT16_HA", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0xffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* Like R_PPC_REL24, but referring to the procedure linkage table
634 entry for the symbol. */
635 HOWTO (R_PPC_PLTREL24, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 26, /* bitsize */
639 TRUE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_signed, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC_PLTREL24", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0x3fffffc, /* dst_mask */
647 TRUE), /* pcrel_offset */
648
649 /* This is used only by the dynamic linker. The symbol should exist
650 both in the object being run and in some shared library. The
651 dynamic linker copies the data addressed by the symbol from the
652 shared library into the object, because the object being
653 run has to have the data at some particular address. */
654 HOWTO (R_PPC_COPY, /* type */
655 0, /* rightshift */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
657 32, /* bitsize */
658 FALSE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_bitfield, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 "R_PPC_COPY", /* name */
663 FALSE, /* partial_inplace */
664 0, /* src_mask */
665 0, /* dst_mask */
666 FALSE), /* pcrel_offset */
667
668 /* Like R_PPC_ADDR32, but used when setting global offset table
669 entries. */
670 HOWTO (R_PPC_GLOB_DAT, /* type */
671 0, /* rightshift */
672 2, /* size (0 = byte, 1 = short, 2 = long) */
673 32, /* bitsize */
674 FALSE, /* pc_relative */
675 0, /* bitpos */
676 complain_overflow_bitfield, /* complain_on_overflow */
677 bfd_elf_generic_reloc, /* special_function */
678 "R_PPC_GLOB_DAT", /* name */
679 FALSE, /* partial_inplace */
680 0, /* src_mask */
681 0xffffffff, /* dst_mask */
682 FALSE), /* pcrel_offset */
683
684 /* Marks a procedure linkage table entry for a symbol. */
685 HOWTO (R_PPC_JMP_SLOT, /* type */
686 0, /* rightshift */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
688 32, /* bitsize */
689 FALSE, /* pc_relative */
690 0, /* bitpos */
691 complain_overflow_bitfield, /* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_PPC_JMP_SLOT", /* name */
694 FALSE, /* partial_inplace */
695 0, /* src_mask */
696 0, /* dst_mask */
697 FALSE), /* pcrel_offset */
698
699 /* Used only by the dynamic linker. When the object is run, this
700 longword is set to the load address of the object, plus the
701 addend. */
702 HOWTO (R_PPC_RELATIVE, /* type */
703 0, /* rightshift */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
705 32, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_PPC_RELATIVE", /* name */
711 FALSE, /* partial_inplace */
712 0, /* src_mask */
713 0xffffffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* Like R_PPC_REL24, but uses the value of the symbol within the
717 object rather than the final value. Normally used for
718 _GLOBAL_OFFSET_TABLE_. */
719 HOWTO (R_PPC_LOCAL24PC, /* type */
720 0, /* rightshift */
721 2, /* size (0 = byte, 1 = short, 2 = long) */
722 26, /* bitsize */
723 TRUE, /* pc_relative */
724 0, /* bitpos */
725 complain_overflow_signed, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC_LOCAL24PC", /* name */
728 FALSE, /* partial_inplace */
729 0, /* src_mask */
730 0x3fffffc, /* dst_mask */
731 TRUE), /* pcrel_offset */
732
733 /* Like R_PPC_ADDR32, but may be unaligned. */
734 HOWTO (R_PPC_UADDR32, /* type */
735 0, /* rightshift */
736 2, /* size (0 = byte, 1 = short, 2 = long) */
737 32, /* bitsize */
738 FALSE, /* pc_relative */
739 0, /* bitpos */
740 complain_overflow_bitfield, /* complain_on_overflow */
741 bfd_elf_generic_reloc, /* special_function */
742 "R_PPC_UADDR32", /* name */
743 FALSE, /* partial_inplace */
744 0, /* src_mask */
745 0xffffffff, /* dst_mask */
746 FALSE), /* pcrel_offset */
747
748 /* Like R_PPC_ADDR16, but may be unaligned. */
749 HOWTO (R_PPC_UADDR16, /* type */
750 0, /* rightshift */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
752 16, /* bitsize */
753 FALSE, /* pc_relative */
754 0, /* bitpos */
755 complain_overflow_bitfield, /* complain_on_overflow */
756 bfd_elf_generic_reloc, /* special_function */
757 "R_PPC_UADDR16", /* name */
758 FALSE, /* partial_inplace */
759 0, /* src_mask */
760 0xffff, /* dst_mask */
761 FALSE), /* pcrel_offset */
762
763 /* 32-bit PC relative */
764 HOWTO (R_PPC_REL32, /* type */
765 0, /* rightshift */
766 2, /* size (0 = byte, 1 = short, 2 = long) */
767 32, /* bitsize */
768 TRUE, /* pc_relative */
769 0, /* bitpos */
770 complain_overflow_bitfield, /* complain_on_overflow */
771 bfd_elf_generic_reloc, /* special_function */
772 "R_PPC_REL32", /* name */
773 FALSE, /* partial_inplace */
774 0, /* src_mask */
775 0xffffffff, /* dst_mask */
776 TRUE), /* pcrel_offset */
777
778 /* 32-bit relocation to the symbol's procedure linkage table.
779 FIXME: not supported. */
780 HOWTO (R_PPC_PLT32, /* type */
781 0, /* rightshift */
782 2, /* size (0 = byte, 1 = short, 2 = long) */
783 32, /* bitsize */
784 FALSE, /* pc_relative */
785 0, /* bitpos */
786 complain_overflow_bitfield, /* complain_on_overflow */
787 bfd_elf_generic_reloc, /* special_function */
788 "R_PPC_PLT32", /* name */
789 FALSE, /* partial_inplace */
790 0, /* src_mask */
791 0, /* dst_mask */
792 FALSE), /* pcrel_offset */
793
794 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
795 FIXME: not supported. */
796 HOWTO (R_PPC_PLTREL32, /* type */
797 0, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 32, /* bitsize */
800 TRUE, /* pc_relative */
801 0, /* bitpos */
802 complain_overflow_bitfield, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 "R_PPC_PLTREL32", /* name */
805 FALSE, /* partial_inplace */
806 0, /* src_mask */
807 0, /* dst_mask */
808 TRUE), /* pcrel_offset */
809
810 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
811 the symbol. */
812 HOWTO (R_PPC_PLT16_LO, /* type */
813 0, /* rightshift */
814 1, /* size (0 = byte, 1 = short, 2 = long) */
815 16, /* bitsize */
816 FALSE, /* pc_relative */
817 0, /* bitpos */
818 complain_overflow_dont, /* complain_on_overflow */
819 bfd_elf_generic_reloc, /* special_function */
820 "R_PPC_PLT16_LO", /* name */
821 FALSE, /* partial_inplace */
822 0, /* src_mask */
823 0xffff, /* dst_mask */
824 FALSE), /* pcrel_offset */
825
826 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
827 the symbol. */
828 HOWTO (R_PPC_PLT16_HI, /* type */
829 16, /* rightshift */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
831 16, /* bitsize */
832 FALSE, /* pc_relative */
833 0, /* bitpos */
834 complain_overflow_bitfield, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC_PLT16_HI", /* name */
837 FALSE, /* partial_inplace */
838 0, /* src_mask */
839 0xffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
841
842 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
843 the symbol. */
844 HOWTO (R_PPC_PLT16_HA, /* type */
845 16, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
848 FALSE, /* pc_relative */
849 0, /* bitpos */
850 complain_overflow_bitfield, /* complain_on_overflow */
851 ppc_elf_addr16_ha_reloc, /* special_function */
852 "R_PPC_PLT16_HA", /* name */
853 FALSE, /* partial_inplace */
854 0, /* src_mask */
855 0xffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
857
858 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
859 small data items. */
860 HOWTO (R_PPC_SDAREL16, /* type */
861 0, /* rightshift */
862 1, /* size (0 = byte, 1 = short, 2 = long) */
863 16, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_signed, /* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_PPC_SDAREL16", /* name */
869 FALSE, /* partial_inplace */
870 0, /* src_mask */
871 0xffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873
874 /* 16-bit section relative relocation. */
875 HOWTO (R_PPC_SECTOFF, /* type */
876 0, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
879 FALSE, /* pc_relative */
880 0, /* bitpos */
881 complain_overflow_bitfield, /* complain_on_overflow */
882 bfd_elf_generic_reloc, /* special_function */
883 "R_PPC_SECTOFF", /* name */
884 FALSE, /* partial_inplace */
885 0, /* src_mask */
886 0xffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
888
889 /* 16-bit lower half section relative relocation. */
890 HOWTO (R_PPC_SECTOFF_LO, /* type */
891 0, /* rightshift */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
893 16, /* bitsize */
894 FALSE, /* pc_relative */
895 0, /* bitpos */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC_SECTOFF_LO", /* name */
899 FALSE, /* partial_inplace */
900 0, /* src_mask */
901 0xffff, /* dst_mask */
902 FALSE), /* pcrel_offset */
903
904 /* 16-bit upper half section relative relocation. */
905 HOWTO (R_PPC_SECTOFF_HI, /* type */
906 16, /* rightshift */
907 1, /* size (0 = byte, 1 = short, 2 = long) */
908 16, /* bitsize */
909 FALSE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_bitfield, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC_SECTOFF_HI", /* name */
914 FALSE, /* partial_inplace */
915 0, /* src_mask */
916 0xffff, /* dst_mask */
917 FALSE), /* pcrel_offset */
918
919 /* 16-bit upper half adjusted section relative relocation. */
920 HOWTO (R_PPC_SECTOFF_HA, /* type */
921 16, /* rightshift */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
923 16, /* bitsize */
924 FALSE, /* pc_relative */
925 0, /* bitpos */
926 complain_overflow_bitfield, /* complain_on_overflow */
927 ppc_elf_addr16_ha_reloc, /* special_function */
928 "R_PPC_SECTOFF_HA", /* name */
929 FALSE, /* partial_inplace */
930 0, /* src_mask */
931 0xffff, /* dst_mask */
932 FALSE), /* pcrel_offset */
933
934 /* Marker reloc for TLS. */
935 HOWTO (R_PPC_TLS,
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_dont, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_PPC_TLS", /* name */
944 FALSE, /* partial_inplace */
945 0, /* src_mask */
946 0, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Computes the load module index of the load module that contains the
950 definition of its TLS sym. */
951 HOWTO (R_PPC_DTPMOD32,
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_dont, /* complain_on_overflow */
958 ppc_elf_unhandled_reloc, /* special_function */
959 "R_PPC_DTPMOD32", /* name */
960 FALSE, /* partial_inplace */
961 0, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Computes a dtv-relative displacement, the difference between the value
966 of sym+add and the base address of the thread-local storage block that
967 contains the definition of sym, minus 0x8000. */
968 HOWTO (R_PPC_DTPREL32,
969 0, /* rightshift */
970 2, /* size (0 = byte, 1 = short, 2 = long) */
971 32, /* bitsize */
972 FALSE, /* pc_relative */
973 0, /* bitpos */
974 complain_overflow_dont, /* complain_on_overflow */
975 ppc_elf_unhandled_reloc, /* special_function */
976 "R_PPC_DTPREL32", /* name */
977 FALSE, /* partial_inplace */
978 0, /* src_mask */
979 0xffffffff, /* dst_mask */
980 FALSE), /* pcrel_offset */
981
982 /* A 16 bit dtprel reloc. */
983 HOWTO (R_PPC_DTPREL16,
984 0, /* rightshift */
985 1, /* size (0 = byte, 1 = short, 2 = long) */
986 16, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_signed, /* complain_on_overflow */
990 ppc_elf_unhandled_reloc, /* special_function */
991 "R_PPC_DTPREL16", /* name */
992 FALSE, /* partial_inplace */
993 0, /* src_mask */
994 0xffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 /* Like DTPREL16, but no overflow. */
998 HOWTO (R_PPC_DTPREL16_LO,
999 0, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
1002 FALSE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_dont, /* complain_on_overflow */
1005 ppc_elf_unhandled_reloc, /* special_function */
1006 "R_PPC_DTPREL16_LO", /* name */
1007 FALSE, /* partial_inplace */
1008 0, /* src_mask */
1009 0xffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1011
1012 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1013 HOWTO (R_PPC_DTPREL16_HI,
1014 16, /* rightshift */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 16, /* bitsize */
1017 FALSE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_dont, /* complain_on_overflow */
1020 ppc_elf_unhandled_reloc, /* special_function */
1021 "R_PPC_DTPREL16_HI", /* name */
1022 FALSE, /* partial_inplace */
1023 0, /* src_mask */
1024 0xffff, /* dst_mask */
1025 FALSE), /* pcrel_offset */
1026
1027 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1028 HOWTO (R_PPC_DTPREL16_HA,
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
1032 FALSE, /* pc_relative */
1033 0, /* bitpos */
1034 complain_overflow_dont, /* complain_on_overflow */
1035 ppc_elf_unhandled_reloc, /* special_function */
1036 "R_PPC_DTPREL16_HA", /* name */
1037 FALSE, /* partial_inplace */
1038 0, /* src_mask */
1039 0xffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1041
1042 /* Computes a tp-relative displacement, the difference between the value of
1043 sym+add and the value of the thread pointer (r13). */
1044 HOWTO (R_PPC_TPREL32,
1045 0, /* rightshift */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 32, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc, /* special_function */
1052 "R_PPC_TPREL32", /* name */
1053 FALSE, /* partial_inplace */
1054 0, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
1058 /* A 16 bit tprel reloc. */
1059 HOWTO (R_PPC_TPREL16,
1060 0, /* rightshift */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 16, /* bitsize */
1063 FALSE, /* pc_relative */
1064 0, /* bitpos */
1065 complain_overflow_signed, /* complain_on_overflow */
1066 ppc_elf_unhandled_reloc, /* special_function */
1067 "R_PPC_TPREL16", /* name */
1068 FALSE, /* partial_inplace */
1069 0, /* src_mask */
1070 0xffff, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1072
1073 /* Like TPREL16, but no overflow. */
1074 HOWTO (R_PPC_TPREL16_LO,
1075 0, /* rightshift */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 16, /* bitsize */
1078 FALSE, /* pc_relative */
1079 0, /* bitpos */
1080 complain_overflow_dont, /* complain_on_overflow */
1081 ppc_elf_unhandled_reloc, /* special_function */
1082 "R_PPC_TPREL16_LO", /* name */
1083 FALSE, /* partial_inplace */
1084 0, /* src_mask */
1085 0xffff, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087
1088 /* Like TPREL16_LO, but next higher group of 16 bits. */
1089 HOWTO (R_PPC_TPREL16_HI,
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 16, /* bitsize */
1093 FALSE, /* pc_relative */
1094 0, /* bitpos */
1095 complain_overflow_dont, /* complain_on_overflow */
1096 ppc_elf_unhandled_reloc, /* special_function */
1097 "R_PPC_TPREL16_HI", /* name */
1098 FALSE, /* partial_inplace */
1099 0, /* src_mask */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1102
1103 /* Like TPREL16_HI, but adjust for low 16 bits. */
1104 HOWTO (R_PPC_TPREL16_HA,
1105 16, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc, /* special_function */
1112 "R_PPC_TPREL16_HA", /* name */
1113 FALSE, /* partial_inplace */
1114 0, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1117
1118 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1119 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1120 to the first entry. */
1121 HOWTO (R_PPC_GOT_TLSGD16,
1122 0, /* rightshift */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 16, /* bitsize */
1125 FALSE, /* pc_relative */
1126 0, /* bitpos */
1127 complain_overflow_signed, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc, /* special_function */
1129 "R_PPC_GOT_TLSGD16", /* name */
1130 FALSE, /* partial_inplace */
1131 0, /* src_mask */
1132 0xffff, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1134
1135 /* Like GOT_TLSGD16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TLSGD16_LO,
1137 0, /* rightshift */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 16, /* bitsize */
1140 FALSE, /* pc_relative */
1141 0, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc, /* special_function */
1144 "R_PPC_GOT_TLSGD16_LO", /* name */
1145 FALSE, /* partial_inplace */
1146 0, /* src_mask */
1147 0xffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1150 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TLSGD16_HI,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 16, /* bitsize */
1155 FALSE, /* pc_relative */
1156 0, /* bitpos */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc, /* special_function */
1159 "R_PPC_GOT_TLSGD16_HI", /* name */
1160 FALSE, /* partial_inplace */
1161 0, /* src_mask */
1162 0xffff, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1164
1165 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TLSGD16_HA,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 16, /* bitsize */
1170 FALSE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc, /* special_function */
1174 "R_PPC_GOT_TLSGD16_HA", /* name */
1175 FALSE, /* partial_inplace */
1176 0, /* src_mask */
1177 0xffff, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1179
1180 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1181 with values (sym+add)@dtpmod and zero, and computes the offset to the
1182 first entry. */
1183 HOWTO (R_PPC_GOT_TLSLD16,
1184 0, /* rightshift */
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 16, /* bitsize */
1187 FALSE, /* pc_relative */
1188 0, /* bitpos */
1189 complain_overflow_signed, /* complain_on_overflow */
1190 ppc_elf_unhandled_reloc, /* special_function */
1191 "R_PPC_GOT_TLSLD16", /* name */
1192 FALSE, /* partial_inplace */
1193 0, /* src_mask */
1194 0xffff, /* dst_mask */
1195 FALSE), /* pcrel_offset */
1196
1197 /* Like GOT_TLSLD16, but no overflow. */
1198 HOWTO (R_PPC_GOT_TLSLD16_LO,
1199 0, /* rightshift */
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 16, /* bitsize */
1202 FALSE, /* pc_relative */
1203 0, /* bitpos */
1204 complain_overflow_dont, /* complain_on_overflow */
1205 ppc_elf_unhandled_reloc, /* special_function */
1206 "R_PPC_GOT_TLSLD16_LO", /* name */
1207 FALSE, /* partial_inplace */
1208 0, /* src_mask */
1209 0xffff, /* dst_mask */
1210 FALSE), /* pcrel_offset */
1211
1212 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1213 HOWTO (R_PPC_GOT_TLSLD16_HI,
1214 16, /* rightshift */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 16, /* bitsize */
1217 FALSE, /* pc_relative */
1218 0, /* bitpos */
1219 complain_overflow_dont, /* complain_on_overflow */
1220 ppc_elf_unhandled_reloc, /* special_function */
1221 "R_PPC_GOT_TLSLD16_HI", /* name */
1222 FALSE, /* partial_inplace */
1223 0, /* src_mask */
1224 0xffff, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1226
1227 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1228 HOWTO (R_PPC_GOT_TLSLD16_HA,
1229 16, /* rightshift */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 16, /* bitsize */
1232 FALSE, /* pc_relative */
1233 0, /* bitpos */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 ppc_elf_unhandled_reloc, /* special_function */
1236 "R_PPC_GOT_TLSLD16_HA", /* name */
1237 FALSE, /* partial_inplace */
1238 0, /* src_mask */
1239 0xffff, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1241
1242 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1243 the offset to the entry. */
1244 HOWTO (R_PPC_GOT_DTPREL16,
1245 0, /* rightshift */
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1247 16, /* bitsize */
1248 FALSE, /* pc_relative */
1249 0, /* bitpos */
1250 complain_overflow_signed, /* complain_on_overflow */
1251 ppc_elf_unhandled_reloc, /* special_function */
1252 "R_PPC_GOT_DTPREL16", /* name */
1253 FALSE, /* partial_inplace */
1254 0, /* src_mask */
1255 0xffff, /* dst_mask */
1256 FALSE), /* pcrel_offset */
1257
1258 /* Like GOT_DTPREL16, but no overflow. */
1259 HOWTO (R_PPC_GOT_DTPREL16_LO,
1260 0, /* rightshift */
1261 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 16, /* bitsize */
1263 FALSE, /* pc_relative */
1264 0, /* bitpos */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc_elf_unhandled_reloc, /* special_function */
1267 "R_PPC_GOT_DTPREL16_LO", /* name */
1268 FALSE, /* partial_inplace */
1269 0, /* src_mask */
1270 0xffff, /* dst_mask */
1271 FALSE), /* pcrel_offset */
1272
1273 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1274 HOWTO (R_PPC_GOT_DTPREL16_HI,
1275 16, /* rightshift */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 16, /* bitsize */
1278 FALSE, /* pc_relative */
1279 0, /* bitpos */
1280 complain_overflow_dont, /* complain_on_overflow */
1281 ppc_elf_unhandled_reloc, /* special_function */
1282 "R_PPC_GOT_DTPREL16_HI", /* name */
1283 FALSE, /* partial_inplace */
1284 0, /* src_mask */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1287
1288 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1289 HOWTO (R_PPC_GOT_DTPREL16_HA,
1290 16, /* rightshift */
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 16, /* bitsize */
1293 FALSE, /* pc_relative */
1294 0, /* bitpos */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc_elf_unhandled_reloc, /* special_function */
1297 "R_PPC_GOT_DTPREL16_HA", /* name */
1298 FALSE, /* partial_inplace */
1299 0, /* src_mask */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1302
1303 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1304 offset to the entry. */
1305 HOWTO (R_PPC_GOT_TPREL16,
1306 0, /* rightshift */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 16, /* bitsize */
1309 FALSE, /* pc_relative */
1310 0, /* bitpos */
1311 complain_overflow_signed, /* complain_on_overflow */
1312 ppc_elf_unhandled_reloc, /* special_function */
1313 "R_PPC_GOT_TPREL16", /* name */
1314 FALSE, /* partial_inplace */
1315 0, /* src_mask */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1318
1319 /* Like GOT_TPREL16, but no overflow. */
1320 HOWTO (R_PPC_GOT_TPREL16_LO,
1321 0, /* rightshift */
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 16, /* bitsize */
1324 FALSE, /* pc_relative */
1325 0, /* bitpos */
1326 complain_overflow_dont, /* complain_on_overflow */
1327 ppc_elf_unhandled_reloc, /* special_function */
1328 "R_PPC_GOT_TPREL16_LO", /* name */
1329 FALSE, /* partial_inplace */
1330 0, /* src_mask */
1331 0xffff, /* dst_mask */
1332 FALSE), /* pcrel_offset */
1333
1334 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1335 HOWTO (R_PPC_GOT_TPREL16_HI,
1336 16, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 16, /* bitsize */
1339 FALSE, /* pc_relative */
1340 0, /* bitpos */
1341 complain_overflow_dont, /* complain_on_overflow */
1342 ppc_elf_unhandled_reloc, /* special_function */
1343 "R_PPC_GOT_TPREL16_HI", /* name */
1344 FALSE, /* partial_inplace */
1345 0, /* src_mask */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1348
1349 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1350 HOWTO (R_PPC_GOT_TPREL16_HA,
1351 16, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 FALSE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_dont, /* complain_on_overflow */
1357 ppc_elf_unhandled_reloc, /* special_function */
1358 "R_PPC_GOT_TPREL16_HA", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1363
1364 /* The remaining relocs are from the Embedded ELF ABI, and are not
1365 in the SVR4 ELF ABI. */
1366
1367 /* 32 bit value resulting from the addend minus the symbol. */
1368 HOWTO (R_PPC_EMB_NADDR32, /* type */
1369 0, /* rightshift */
1370 2, /* size (0 = byte, 1 = short, 2 = long) */
1371 32, /* bitsize */
1372 FALSE, /* pc_relative */
1373 0, /* bitpos */
1374 complain_overflow_bitfield, /* complain_on_overflow */
1375 bfd_elf_generic_reloc, /* special_function */
1376 "R_PPC_EMB_NADDR32", /* name */
1377 FALSE, /* partial_inplace */
1378 0, /* src_mask */
1379 0xffffffff, /* dst_mask */
1380 FALSE), /* pcrel_offset */
1381
1382 /* 16 bit value resulting from the addend minus the symbol. */
1383 HOWTO (R_PPC_EMB_NADDR16, /* type */
1384 0, /* rightshift */
1385 1, /* size (0 = byte, 1 = short, 2 = long) */
1386 16, /* bitsize */
1387 FALSE, /* pc_relative */
1388 0, /* bitpos */
1389 complain_overflow_bitfield, /* complain_on_overflow */
1390 bfd_elf_generic_reloc, /* special_function */
1391 "R_PPC_EMB_NADDR16", /* name */
1392 FALSE, /* partial_inplace */
1393 0, /* src_mask */
1394 0xffff, /* dst_mask */
1395 FALSE), /* pcrel_offset */
1396
1397 /* 16 bit value resulting from the addend minus the symbol. */
1398 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1399 0, /* rightshift */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 16, /* bitsize */
1402 FALSE, /* pc_relative */
1403 0, /* bitpos */
1404 complain_overflow_dont,/* complain_on_overflow */
1405 bfd_elf_generic_reloc, /* special_function */
1406 "R_PPC_EMB_ADDR16_LO", /* name */
1407 FALSE, /* partial_inplace */
1408 0, /* src_mask */
1409 0xffff, /* dst_mask */
1410 FALSE), /* pcrel_offset */
1411
1412 /* The high order 16 bits of the addend minus the symbol. */
1413 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1414 16, /* rightshift */
1415 1, /* size (0 = byte, 1 = short, 2 = long) */
1416 16, /* bitsize */
1417 FALSE, /* pc_relative */
1418 0, /* bitpos */
1419 complain_overflow_dont, /* complain_on_overflow */
1420 bfd_elf_generic_reloc, /* special_function */
1421 "R_PPC_EMB_NADDR16_HI", /* name */
1422 FALSE, /* partial_inplace */
1423 0, /* src_mask */
1424 0xffff, /* dst_mask */
1425 FALSE), /* pcrel_offset */
1426
1427 /* The high order 16 bits of the result of the addend minus the address,
1428 plus 1 if the contents of the low 16 bits, treated as a signed number,
1429 is negative. */
1430 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 16, /* bitsize */
1434 FALSE, /* pc_relative */
1435 0, /* bitpos */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 ppc_elf_addr16_ha_reloc, /* special_function */
1438 "R_PPC_EMB_NADDR16_HA", /* name */
1439 FALSE, /* partial_inplace */
1440 0, /* src_mask */
1441 0xffff, /* dst_mask */
1442 FALSE), /* pcrel_offset */
1443
1444 /* 16 bit value resulting from allocating a 4 byte word to hold an
1445 address in the .sdata section, and returning the offset from
1446 _SDA_BASE_ for that relocation. */
1447 HOWTO (R_PPC_EMB_SDAI16, /* type */
1448 0, /* rightshift */
1449 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 16, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_bitfield, /* complain_on_overflow */
1454 bfd_elf_generic_reloc, /* special_function */
1455 "R_PPC_EMB_SDAI16", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0xffff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* 16 bit value resulting from allocating a 4 byte word to hold an
1462 address in the .sdata2 section, and returning the offset from
1463 _SDA2_BASE_ for that relocation. */
1464 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1465 0, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 16, /* bitsize */
1468 FALSE, /* pc_relative */
1469 0, /* bitpos */
1470 complain_overflow_bitfield, /* complain_on_overflow */
1471 bfd_elf_generic_reloc, /* special_function */
1472 "R_PPC_EMB_SDA2I16", /* name */
1473 FALSE, /* partial_inplace */
1474 0, /* src_mask */
1475 0xffff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1477
1478 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1479 small data items. */
1480 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1481 0, /* rightshift */
1482 1, /* size (0 = byte, 1 = short, 2 = long) */
1483 16, /* bitsize */
1484 FALSE, /* pc_relative */
1485 0, /* bitpos */
1486 complain_overflow_signed, /* complain_on_overflow */
1487 bfd_elf_generic_reloc, /* special_function */
1488 "R_PPC_EMB_SDA2REL", /* name */
1489 FALSE, /* partial_inplace */
1490 0, /* src_mask */
1491 0xffff, /* dst_mask */
1492 FALSE), /* pcrel_offset */
1493
1494 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1495 signed offset from the appropriate base, and filling in the register
1496 field with the appropriate register (0, 2, or 13). */
1497 HOWTO (R_PPC_EMB_SDA21, /* type */
1498 0, /* rightshift */
1499 2, /* size (0 = byte, 1 = short, 2 = long) */
1500 16, /* bitsize */
1501 FALSE, /* pc_relative */
1502 0, /* bitpos */
1503 complain_overflow_signed, /* complain_on_overflow */
1504 bfd_elf_generic_reloc, /* special_function */
1505 "R_PPC_EMB_SDA21", /* name */
1506 FALSE, /* partial_inplace */
1507 0, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1510
1511 /* Relocation not handled: R_PPC_EMB_MRKREF */
1512 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1513 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1514 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1515 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1516 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1517
1518 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1519 in the 16 bit signed offset from the appropriate base, and filling in the
1520 register field with the appropriate register (0, 2, or 13). */
1521 HOWTO (R_PPC_EMB_RELSDA, /* type */
1522 0, /* rightshift */
1523 1, /* size (0 = byte, 1 = short, 2 = long) */
1524 16, /* bitsize */
1525 TRUE, /* pc_relative */
1526 0, /* bitpos */
1527 complain_overflow_signed, /* complain_on_overflow */
1528 bfd_elf_generic_reloc, /* special_function */
1529 "R_PPC_EMB_RELSDA", /* name */
1530 FALSE, /* partial_inplace */
1531 0, /* src_mask */
1532 0xffff, /* dst_mask */
1533 FALSE), /* pcrel_offset */
1534
1535 /* Phony relocs to handle branch stubs. */
1536 HOWTO (R_PPC_RELAX32, /* type */
1537 0, /* rightshift */
1538 0, /* size */
1539 0, /* bitsize */
1540 FALSE, /* pc_relative */
1541 0, /* bitpos */
1542 complain_overflow_dont, /* complain_on_overflow */
1543 bfd_elf_generic_reloc, /* special_function */
1544 "R_PPC_RELAX32", /* name */
1545 FALSE, /* partial_inplace */
1546 0, /* src_mask */
1547 0, /* dst_mask */
1548 FALSE), /* pcrel_offset */
1549
1550 HOWTO (R_PPC_RELAX32PC, /* type */
1551 0, /* rightshift */
1552 0, /* size */
1553 0, /* bitsize */
1554 FALSE, /* pc_relative */
1555 0, /* bitpos */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 bfd_elf_generic_reloc, /* special_function */
1558 "R_PPC_RELAX32PC", /* name */
1559 FALSE, /* partial_inplace */
1560 0, /* src_mask */
1561 0, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1563
1564 /* GNU extension to record C++ vtable hierarchy. */
1565 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1566 0, /* rightshift */
1567 0, /* size (0 = byte, 1 = short, 2 = long) */
1568 0, /* bitsize */
1569 FALSE, /* pc_relative */
1570 0, /* bitpos */
1571 complain_overflow_dont, /* complain_on_overflow */
1572 NULL, /* special_function */
1573 "R_PPC_GNU_VTINHERIT", /* name */
1574 FALSE, /* partial_inplace */
1575 0, /* src_mask */
1576 0, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1578
1579 /* GNU extension to record C++ vtable member usage. */
1580 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1581 0, /* rightshift */
1582 0, /* size (0 = byte, 1 = short, 2 = long) */
1583 0, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
1586 complain_overflow_dont, /* complain_on_overflow */
1587 NULL, /* special_function */
1588 "R_PPC_GNU_VTENTRY", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1593
1594 /* Phony reloc to handle AIX style TOC entries. */
1595 HOWTO (R_PPC_TOC16, /* type */
1596 0, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 16, /* bitsize */
1599 FALSE, /* pc_relative */
1600 0, /* bitpos */
1601 complain_overflow_signed, /* complain_on_overflow */
1602 bfd_elf_generic_reloc, /* special_function */
1603 "R_PPC_TOC16", /* name */
1604 FALSE, /* partial_inplace */
1605 0, /* src_mask */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1608 };
1609 \f
1610 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1611
1612 static void
1613 ppc_elf_howto_init (void)
1614 {
1615 unsigned int i, type;
1616
1617 for (i = 0;
1618 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1619 i++)
1620 {
1621 type = ppc_elf_howto_raw[i].type;
1622 if (type >= (sizeof (ppc_elf_howto_table)
1623 / sizeof (ppc_elf_howto_table[0])))
1624 abort ();
1625 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1626 }
1627 }
1628 \f
1629 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
1630
1631 static const int shared_stub_entry[] =
1632 {
1633 0x7c0802a6, /* mflr 0 */
1634 0x429f0005, /* bcl 20, 31, .Lxxx */
1635 0x7d6802a6, /* mflr 11 */
1636 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
1637 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
1638 0x7c0803a6, /* mtlr 0 */
1639 0x7d6903a6, /* mtctr 11 */
1640 0x4e800420, /* bctr */
1641 };
1642
1643 static const int stub_entry[] =
1644 {
1645 0x3d600000, /* lis 11,xxx@ha */
1646 0x396b0000, /* addi 11,11,xxx@l */
1647 0x7d6903a6, /* mtctr 11 */
1648 0x4e800420, /* bctr */
1649 };
1650
1651
1652 static bfd_boolean
1653 ppc_elf_relax_section (bfd *abfd,
1654 asection *isec,
1655 struct bfd_link_info *link_info,
1656 bfd_boolean *again)
1657 {
1658 struct one_fixup
1659 {
1660 struct one_fixup *next;
1661 asection *tsec;
1662 bfd_vma toff;
1663 bfd_vma trampoff;
1664 };
1665
1666 Elf_Internal_Shdr *symtab_hdr;
1667 bfd_byte *contents = NULL;
1668 Elf_Internal_Sym *isymbuf = NULL;
1669 Elf_Internal_Rela *internal_relocs = NULL;
1670 Elf_Internal_Rela *irel, *irelend;
1671 struct one_fixup *fixups = NULL;
1672 bfd_boolean changed;
1673 struct ppc_elf_link_hash_table *ppc_info;
1674 bfd_size_type trampoff;
1675
1676 *again = FALSE;
1677
1678 /* Nothing to do if there are no relocations and no need for
1679 the relax finalize pass. */
1680 if ((isec->flags & SEC_RELOC) == 0
1681 || isec->reloc_count == 0
1682 || link_info->relax_finalizing)
1683 return TRUE;
1684
1685 /* If needed, initialize this section's cooked size. */
1686 if (isec->_cooked_size == 0)
1687 isec->_cooked_size = isec->_raw_size;
1688
1689 trampoff = (isec->_cooked_size + 3) & (bfd_vma) -4;
1690 /* Space for a branch around any trampolines. */
1691 trampoff += 4;
1692
1693 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1694
1695 /* Get a copy of the native relocations. */
1696 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
1697 link_info->keep_memory);
1698 if (internal_relocs == NULL)
1699 goto error_return;
1700
1701 ppc_info = ppc_elf_hash_table (link_info);
1702 irelend = internal_relocs + isec->reloc_count;
1703
1704 /* Get the section contents. */
1705 /* Get cached copy if it exists. */
1706 if (elf_section_data (isec)->this_hdr.contents != NULL)
1707 contents = elf_section_data (isec)->this_hdr.contents;
1708 else
1709 {
1710 /* Go get them off disk. */
1711 contents = bfd_malloc (isec->_raw_size);
1712 if (contents == NULL)
1713 goto error_return;
1714
1715 if (!bfd_get_section_contents (abfd, isec, contents, 0, isec->_raw_size))
1716 goto error_return;
1717 }
1718
1719 for (irel = internal_relocs; irel < irelend; irel++)
1720 {
1721 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
1722 bfd_vma symaddr, reladdr, toff, roff;
1723 asection *tsec;
1724 struct one_fixup *f;
1725 size_t insn_offset = 0;
1726 bfd_vma max_branch_offset, val;
1727 bfd_byte *hit_addr;
1728 unsigned long t0;
1729
1730 switch (r_type)
1731 {
1732 case R_PPC_REL24:
1733 case R_PPC_LOCAL24PC:
1734 case R_PPC_PLTREL24:
1735 max_branch_offset = 1 << 25;
1736 break;
1737
1738 case R_PPC_REL14:
1739 case R_PPC_REL14_BRTAKEN:
1740 case R_PPC_REL14_BRNTAKEN:
1741 max_branch_offset = 1 << 15;
1742 break;
1743
1744 default:
1745 continue;
1746 }
1747
1748 /* Get the value of the symbol referred to by the reloc. */
1749 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1750 {
1751 /* A local symbol. */
1752 Elf_Internal_Sym *isym;
1753
1754 /* Read this BFD's local symbols. */
1755 if (isymbuf == NULL)
1756 {
1757 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1758 if (isymbuf == NULL)
1759 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1760 symtab_hdr->sh_info, 0,
1761 NULL, NULL, NULL);
1762 if (isymbuf == 0)
1763 goto error_return;
1764 }
1765 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1766 if (isym->st_shndx == SHN_UNDEF)
1767 continue; /* We can't do anthing with undefined symbols. */
1768 else if (isym->st_shndx == SHN_ABS)
1769 tsec = bfd_abs_section_ptr;
1770 else if (isym->st_shndx == SHN_COMMON)
1771 tsec = bfd_com_section_ptr;
1772 else
1773 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1774
1775 toff = isym->st_value;
1776 }
1777 else
1778 {
1779 /* Global symbol handling. */
1780 unsigned long indx;
1781 struct elf_link_hash_entry *h;
1782
1783 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1784 h = elf_sym_hashes (abfd)[indx];
1785
1786 while (h->root.type == bfd_link_hash_indirect
1787 || h->root.type == bfd_link_hash_warning)
1788 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1789
1790 if (r_type == R_PPC_PLTREL24
1791 && ppc_info->plt != NULL
1792 && h->plt.offset != (bfd_vma) -1)
1793 {
1794 tsec = ppc_info->plt;
1795 toff = h->plt.offset;
1796 }
1797 else if (h->root.type == bfd_link_hash_defined
1798 || h->root.type == bfd_link_hash_defweak)
1799 {
1800 tsec = h->root.u.def.section;
1801 toff = h->root.u.def.value;
1802 }
1803 else
1804 continue;
1805 }
1806
1807 /* If the branch and target are in the same section, you have
1808 no hope of adding stubs. We'll error out later should the
1809 branch overflow. */
1810 if (tsec == isec)
1811 continue;
1812
1813 toff += irel->r_addend;
1814 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
1815 toff = _bfd_merged_section_offset (abfd, &tsec,
1816 elf_section_data (tsec)->sec_info,
1817 toff, 0);
1818
1819 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
1820
1821 roff = irel->r_offset;
1822
1823 reladdr = (isec->output_section->vma
1824 + isec->output_offset
1825 + roff);
1826
1827 /* If the branch is in range, no need to do anything. */
1828 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
1829 continue;
1830
1831 /* Look for an existing fixup to this address. */
1832 for (f = fixups; f ; f = f->next)
1833 if (f->tsec == tsec && f->toff == toff)
1834 break;
1835
1836 if (f == NULL)
1837 {
1838 size_t size;
1839 unsigned long stub_rtype;
1840
1841 val = trampoff - roff;
1842 if (val >= max_branch_offset)
1843 /* Oh dear, we can't reach a trampoline. Don't try to add
1844 one. We'll report an error later. */
1845 continue;
1846
1847 if (link_info->shared)
1848 {
1849 size = 4 * ARRAY_SIZE (shared_stub_entry);
1850 insn_offset = 12;
1851 stub_rtype = R_PPC_RELAX32PC;
1852 }
1853 else
1854 {
1855 size = 4 * ARRAY_SIZE (stub_entry);
1856 insn_offset = 0;
1857 stub_rtype = R_PPC_RELAX32;
1858 }
1859
1860 /* Hijack the old relocation. Since we need two
1861 relocations for this use a "composite" reloc. */
1862 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1863 stub_rtype);
1864 irel->r_offset = trampoff + insn_offset;
1865
1866 /* Record the fixup so we don't do it again this section. */
1867 f = bfd_malloc (sizeof (*f));
1868 f->next = fixups;
1869 f->tsec = tsec;
1870 f->toff = toff;
1871 f->trampoff = trampoff;
1872 fixups = f;
1873
1874 trampoff += size;
1875 }
1876 else
1877 {
1878 val = f->trampoff - roff;
1879 if (val >= max_branch_offset)
1880 continue;
1881
1882 /* Nop out the reloc, since we're finalizing things here. */
1883 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
1884 }
1885
1886 /* Fix up the existing branch to hit the trampoline. */
1887 hit_addr = contents + roff;
1888 switch (r_type)
1889 {
1890 case R_PPC_REL24:
1891 case R_PPC_LOCAL24PC:
1892 case R_PPC_PLTREL24:
1893 t0 = bfd_get_32 (abfd, hit_addr);
1894 t0 &= ~0x3fffffc;
1895 t0 |= val & 0x3fffffc;
1896 bfd_put_32 (abfd, t0, hit_addr);
1897 break;
1898
1899 case R_PPC_REL14:
1900 case R_PPC_REL14_BRTAKEN:
1901 case R_PPC_REL14_BRNTAKEN:
1902 t0 = bfd_get_32 (abfd, hit_addr);
1903 t0 &= ~0xfffc;
1904 t0 |= val & 0xfffc;
1905 bfd_put_32 (abfd, t0, hit_addr);
1906 break;
1907 }
1908 }
1909
1910 /* Write out the trampolines. */
1911 changed = fixups != NULL;
1912 if (fixups != NULL)
1913 {
1914 const int *stub;
1915 bfd_byte *dest;
1916 bfd_vma val;
1917 int i, size;
1918
1919 do
1920 {
1921 struct one_fixup *f = fixups;
1922 fixups = fixups->next;
1923 free (f);
1924 }
1925 while (fixups);
1926
1927 contents = bfd_realloc (contents, trampoff);
1928 if (contents == NULL)
1929 goto error_return;
1930
1931 isec->_cooked_size = (isec->_cooked_size + 3) & (bfd_vma) -4;
1932 /* Branch around the trampolines. */
1933 val = trampoff - isec->_cooked_size + 0x48000000;
1934 dest = contents + isec->_cooked_size;
1935 isec->_cooked_size = trampoff;
1936 bfd_put_32 (abfd, val, dest);
1937 dest += 4;
1938
1939 if (link_info->shared)
1940 {
1941 stub = shared_stub_entry;
1942 size = ARRAY_SIZE (shared_stub_entry);
1943 }
1944 else
1945 {
1946 stub = stub_entry;
1947 size = ARRAY_SIZE (stub_entry);
1948 }
1949
1950 i = 0;
1951 while (dest < contents + trampoff)
1952 {
1953 bfd_put_32 (abfd, stub[i], dest);
1954 i++;
1955 if (i == size)
1956 i = 0;
1957 dest += 4;
1958 }
1959 BFD_ASSERT (i == 0);
1960 }
1961
1962 if (isymbuf != NULL
1963 && symtab_hdr->contents != (unsigned char *) isymbuf)
1964 {
1965 if (! link_info->keep_memory)
1966 free (isymbuf);
1967 else
1968 {
1969 /* Cache the symbols for elf_link_input_bfd. */
1970 symtab_hdr->contents = (unsigned char *) isymbuf;
1971 }
1972 }
1973
1974 if (contents != NULL
1975 && elf_section_data (isec)->this_hdr.contents != contents)
1976 {
1977 if (!changed && !link_info->keep_memory)
1978 free (contents);
1979 else
1980 {
1981 /* Cache the section contents for elf_link_input_bfd. */
1982 elf_section_data (isec)->this_hdr.contents = contents;
1983 }
1984 }
1985
1986 if (elf_section_data (isec)->relocs != internal_relocs)
1987 {
1988 if (!changed)
1989 free (internal_relocs);
1990 else
1991 elf_section_data (isec)->relocs = internal_relocs;
1992 }
1993
1994 *again = changed;
1995 return TRUE;
1996
1997 error_return:
1998 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1999 free (isymbuf);
2000 if (contents != NULL
2001 && elf_section_data (isec)->this_hdr.contents != contents)
2002 free (contents);
2003 if (internal_relocs != NULL
2004 && elf_section_data (isec)->relocs != internal_relocs)
2005 free (internal_relocs);
2006 return FALSE;
2007 }
2008 \f
2009 static reloc_howto_type *
2010 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2011 bfd_reloc_code_real_type code)
2012 {
2013 enum elf_ppc_reloc_type r;
2014
2015 /* Initialize howto table if not already done. */
2016 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2017 ppc_elf_howto_init ();
2018
2019 switch (code)
2020 {
2021 default:
2022 return NULL;
2023
2024 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
2025 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
2026 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
2027 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
2028 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
2029 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
2030 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
2031 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
2032 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
2033 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
2034 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
2035 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
2036 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
2037 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
2038 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
2039 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
2040 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
2041 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
2042 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
2043 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
2044 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
2045 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
2046 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
2047 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
2048 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
2049 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
2050 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
2051 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
2052 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
2053 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
2054 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
2055 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
2056 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
2057 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
2058 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
2059 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
2060 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
2061 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
2062 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
2063 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
2064 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
2065 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
2066 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
2067 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
2068 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
2069 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
2070 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
2071 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
2072 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
2073 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
2074 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
2075 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
2076 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
2077 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
2078 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
2079 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
2080 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
2081 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
2082 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
2083 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
2084 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
2085 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
2086 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
2087 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
2088 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
2089 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
2090 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
2091 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
2092 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
2093 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
2094 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
2095 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
2096 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
2097 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
2098 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
2099 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
2100 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
2101 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
2102 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
2103 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2104 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2105 }
2106
2107 return ppc_elf_howto_table[r];
2108 };
2109
2110 /* Set the howto pointer for a PowerPC ELF reloc. */
2111
2112 static void
2113 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2114 arelent *cache_ptr,
2115 Elf_Internal_Rela *dst)
2116 {
2117 /* Initialize howto table if not already done. */
2118 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2119 ppc_elf_howto_init ();
2120
2121 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2122 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2123 }
2124
2125 /* Handle the R_PPC_ADDR16_HA reloc. */
2126
2127 static bfd_reloc_status_type
2128 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2129 arelent *reloc_entry,
2130 asymbol *symbol,
2131 void *data ATTRIBUTE_UNUSED,
2132 asection *input_section,
2133 bfd *output_bfd,
2134 char **error_message ATTRIBUTE_UNUSED)
2135 {
2136 bfd_vma relocation;
2137
2138 if (output_bfd != NULL)
2139 {
2140 reloc_entry->address += input_section->output_offset;
2141 return bfd_reloc_ok;
2142 }
2143
2144 if (reloc_entry->address > input_section->_cooked_size)
2145 return bfd_reloc_outofrange;
2146
2147 if (bfd_is_com_section (symbol->section))
2148 relocation = 0;
2149 else
2150 relocation = symbol->value;
2151
2152 relocation += symbol->section->output_section->vma;
2153 relocation += symbol->section->output_offset;
2154 relocation += reloc_entry->addend;
2155
2156 reloc_entry->addend += (relocation & 0x8000) << 1;
2157
2158 return bfd_reloc_continue;
2159 }
2160
2161 static bfd_reloc_status_type
2162 ppc_elf_unhandled_reloc (bfd *abfd,
2163 arelent *reloc_entry,
2164 asymbol *symbol,
2165 void *data,
2166 asection *input_section,
2167 bfd *output_bfd,
2168 char **error_message)
2169 {
2170 /* If this is a relocatable link (output_bfd test tells us), just
2171 call the generic function. Any adjustment will be done at final
2172 link time. */
2173 if (output_bfd != NULL)
2174 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2175 input_section, output_bfd, error_message);
2176
2177 if (error_message != NULL)
2178 {
2179 static char buf[60];
2180 sprintf (buf, _("generic linker can't handle %s"),
2181 reloc_entry->howto->name);
2182 *error_message = buf;
2183 }
2184 return bfd_reloc_dangerous;
2185 }
2186
2187 /* Fix bad default arch selected for a 32 bit input bfd when the
2188 default is 64 bit. */
2189
2190 static bfd_boolean
2191 ppc_elf_object_p (bfd *abfd)
2192 {
2193 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2194 {
2195 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2196
2197 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2198 {
2199 /* Relies on arch after 64 bit default being 32 bit default. */
2200 abfd->arch_info = abfd->arch_info->next;
2201 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2202 }
2203 }
2204 return TRUE;
2205 }
2206
2207 /* Function to set whether a module needs the -mrelocatable bit set. */
2208
2209 static bfd_boolean
2210 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2211 {
2212 BFD_ASSERT (!elf_flags_init (abfd)
2213 || elf_elfheader (abfd)->e_flags == flags);
2214
2215 elf_elfheader (abfd)->e_flags = flags;
2216 elf_flags_init (abfd) = TRUE;
2217 return TRUE;
2218 }
2219
2220 /* Merge backend specific data from an object file to the output
2221 object file when linking. */
2222
2223 static bfd_boolean
2224 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2225 {
2226 flagword old_flags;
2227 flagword new_flags;
2228 bfd_boolean error;
2229
2230 /* Check if we have the same endianess. */
2231 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
2232 return FALSE;
2233
2234 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2235 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2236 return TRUE;
2237
2238 new_flags = elf_elfheader (ibfd)->e_flags;
2239 old_flags = elf_elfheader (obfd)->e_flags;
2240 if (!elf_flags_init (obfd))
2241 {
2242 /* First call, no flags set. */
2243 elf_flags_init (obfd) = TRUE;
2244 elf_elfheader (obfd)->e_flags = new_flags;
2245 }
2246
2247 /* Compatible flags are ok. */
2248 else if (new_flags == old_flags)
2249 ;
2250
2251 /* Incompatible flags. */
2252 else
2253 {
2254 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
2255 to be linked with either. */
2256 error = FALSE;
2257 if ((new_flags & EF_PPC_RELOCATABLE) != 0
2258 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
2259 {
2260 error = TRUE;
2261 (*_bfd_error_handler)
2262 (_("%s: compiled with -mrelocatable and linked with "
2263 "modules compiled normally"),
2264 bfd_archive_filename (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 (_("%s: compiled normally and linked with "
2272 "modules compiled with -mrelocatable"),
2273 bfd_archive_filename (ibfd));
2274 }
2275
2276 /* The output is -mrelocatable-lib iff both the input files are. */
2277 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
2278 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
2279
2280 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
2281 but each input file is either -mrelocatable or -mrelocatable-lib. */
2282 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
2283 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
2284 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
2285 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
2286
2287 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
2288 any module uses it. */
2289 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
2290
2291 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
2292 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
2293
2294 /* Warn about any other mismatches. */
2295 if (new_flags != old_flags)
2296 {
2297 error = TRUE;
2298 (*_bfd_error_handler)
2299 (_("%s: uses different e_flags (0x%lx) fields "
2300 "than previous modules (0x%lx)"),
2301 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
2302 }
2303
2304 if (error)
2305 {
2306 bfd_set_error (bfd_error_bad_value);
2307 return FALSE;
2308 }
2309 }
2310
2311 return TRUE;
2312 }
2313 \f
2314 /* Handle a PowerPC specific section when reading an object file. This
2315 is called when elfcode.h finds a section with an unknown type. */
2316
2317 static bfd_boolean
2318 ppc_elf_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name)
2319 {
2320 asection *newsect;
2321 flagword flags;
2322
2323 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2324 return FALSE;
2325
2326 newsect = hdr->bfd_section;
2327 flags = bfd_get_section_flags (abfd, newsect);
2328 if (hdr->sh_flags & SHF_EXCLUDE)
2329 flags |= SEC_EXCLUDE;
2330
2331 if (hdr->sh_type == SHT_ORDERED)
2332 flags |= SEC_SORT_ENTRIES;
2333
2334 bfd_set_section_flags (abfd, newsect, flags);
2335 return TRUE;
2336 }
2337 \f
2338 /* Set up any other section flags and such that may be necessary. */
2339
2340 static bfd_boolean
2341 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2342 Elf_Internal_Shdr *shdr,
2343 asection *asect)
2344 {
2345 if ((asect->flags & SEC_EXCLUDE) != 0)
2346 shdr->sh_flags |= SHF_EXCLUDE;
2347
2348 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2349 shdr->sh_type = SHT_ORDERED;
2350
2351 return TRUE;
2352 }
2353 \f
2354 /* Find a linker generated pointer with a given addend and type. */
2355
2356 static elf_linker_section_pointers_t *
2357 elf_find_pointer_linker_section
2358 (elf_linker_section_pointers_t *linker_pointers,
2359 bfd_vma addend,
2360 elf_linker_section_t *lsect)
2361 {
2362 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2363 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2364 return linker_pointers;
2365
2366 return NULL;
2367 }
2368 \f
2369 /* Allocate a pointer to live in a linker created section. */
2370
2371 static bfd_boolean
2372 elf_create_pointer_linker_section (bfd *abfd,
2373 struct bfd_link_info *info,
2374 elf_linker_section_t *lsect,
2375 struct elf_link_hash_entry *h,
2376 const Elf_Internal_Rela *rel)
2377 {
2378 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2379 elf_linker_section_pointers_t *linker_section_ptr;
2380 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2381 bfd_size_type amt;
2382
2383 BFD_ASSERT (lsect != NULL);
2384
2385 /* Is this a global symbol? */
2386 if (h != NULL)
2387 {
2388 struct ppc_elf_link_hash_entry *eh;
2389
2390 /* Has this symbol already been allocated? If so, our work is done. */
2391 eh = (struct ppc_elf_link_hash_entry *) h;
2392 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2393 rel->r_addend,
2394 lsect))
2395 return TRUE;
2396
2397 ptr_linker_section_ptr = &eh->linker_section_pointer;
2398 /* Make sure this symbol is output as a dynamic symbol. */
2399 if (h->dynindx == -1)
2400 {
2401 if (! _bfd_elf_link_record_dynamic_symbol (info, h))
2402 return FALSE;
2403 }
2404
2405 if (lsect->rel_section)
2406 lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela);
2407 }
2408 else
2409 {
2410 /* Allocation of a pointer to a local symbol. */
2411 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2412
2413 /* Allocate a table to hold the local symbols if first time. */
2414 if (!ptr)
2415 {
2416 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2417
2418 amt = num_symbols;
2419 amt *= sizeof (elf_linker_section_pointers_t *);
2420 ptr = bfd_zalloc (abfd, amt);
2421
2422 if (!ptr)
2423 return FALSE;
2424
2425 elf_local_ptr_offsets (abfd) = ptr;
2426 }
2427
2428 /* Has this symbol already been allocated? If so, our work is done. */
2429 if (elf_find_pointer_linker_section (ptr[r_symndx],
2430 rel->r_addend,
2431 lsect))
2432 return TRUE;
2433
2434 ptr_linker_section_ptr = &ptr[r_symndx];
2435
2436 if (info->shared)
2437 {
2438 /* If we are generating a shared object, we need to
2439 output a R_<xxx>_RELATIVE reloc so that the
2440 dynamic linker can adjust this GOT entry. */
2441 BFD_ASSERT (lsect->rel_section != NULL);
2442 lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela);
2443 }
2444 }
2445
2446 /* Allocate space for a pointer in the linker section, and allocate
2447 a new pointer record from internal memory. */
2448 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2449 amt = sizeof (elf_linker_section_pointers_t);
2450 linker_section_ptr = bfd_alloc (abfd, amt);
2451
2452 if (!linker_section_ptr)
2453 return FALSE;
2454
2455 linker_section_ptr->next = *ptr_linker_section_ptr;
2456 linker_section_ptr->addend = rel->r_addend;
2457 linker_section_ptr->lsect = lsect;
2458 linker_section_ptr->written_address_p = FALSE;
2459 *ptr_linker_section_ptr = linker_section_ptr;
2460
2461 linker_section_ptr->offset = lsect->section->_raw_size;
2462 lsect->section->_raw_size += 4;
2463
2464 #ifdef DEBUG
2465 fprintf (stderr,
2466 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2467 lsect->name, (long) linker_section_ptr->offset,
2468 (long) lsect->section->_raw_size);
2469 #endif
2470
2471 return TRUE;
2472 }
2473 \f
2474 #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR)
2475
2476 /* Fill in the address for a pointer generated in a linker section. */
2477
2478 static bfd_vma
2479 elf_finish_pointer_linker_section (bfd *output_bfd,
2480 bfd *input_bfd,
2481 struct bfd_link_info *info,
2482 elf_linker_section_t *lsect,
2483 struct elf_link_hash_entry *h,
2484 bfd_vma relocation,
2485 const Elf_Internal_Rela *rel,
2486 int relative_reloc)
2487 {
2488 elf_linker_section_pointers_t *linker_section_ptr;
2489
2490 BFD_ASSERT (lsect != NULL);
2491
2492 if (h != NULL)
2493 {
2494 /* Handle global symbol. */
2495 struct ppc_elf_link_hash_entry *eh;
2496
2497 eh = (struct ppc_elf_link_hash_entry *) h;
2498 linker_section_ptr
2499 = elf_find_pointer_linker_section (eh->linker_section_pointer,
2500 rel->r_addend,
2501 lsect);
2502
2503 BFD_ASSERT (linker_section_ptr != NULL);
2504
2505 if (! elf_hash_table (info)->dynamic_sections_created
2506 || (info->shared
2507 && info->symbolic
2508 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
2509 {
2510 /* This is actually a static link, or it is a
2511 -Bsymbolic link and the symbol is defined
2512 locally. We must initialize this entry in the
2513 global section.
2514
2515 When doing a dynamic link, we create a .rela.<xxx>
2516 relocation entry to initialize the value. This
2517 is done in the finish_dynamic_symbol routine. */
2518 if (!linker_section_ptr->written_address_p)
2519 {
2520 linker_section_ptr->written_address_p = TRUE;
2521 bfd_put_ptr (output_bfd,
2522 relocation + linker_section_ptr->addend,
2523 (lsect->section->contents
2524 + linker_section_ptr->offset));
2525 }
2526 }
2527 }
2528 else
2529 {
2530 /* Handle local symbol. */
2531 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2532 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
2533 BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL);
2534 linker_section_ptr = (elf_find_pointer_linker_section
2535 (elf_local_ptr_offsets (input_bfd)[r_symndx],
2536 rel->r_addend,
2537 lsect));
2538
2539 BFD_ASSERT (linker_section_ptr != NULL);
2540
2541 /* Write out pointer if it hasn't been rewritten out before. */
2542 if (!linker_section_ptr->written_address_p)
2543 {
2544 linker_section_ptr->written_address_p = TRUE;
2545 bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
2546 lsect->section->contents + linker_section_ptr->offset);
2547
2548 if (info->shared)
2549 {
2550 /* We need to generate a relative reloc for the dynamic
2551 linker. */
2552
2553 asection *srel = lsect->rel_section;
2554 Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL];
2555 bfd_byte *erel;
2556 const struct elf_backend_data *bed;
2557 unsigned int i;
2558
2559 BFD_ASSERT (srel != NULL);
2560
2561 bed = get_elf_backend_data (output_bfd);
2562 for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
2563 {
2564 outrel[i].r_offset = (lsect->section->output_section->vma
2565 + lsect->section->output_offset
2566 + linker_section_ptr->offset);
2567 outrel[i].r_info = 0;
2568 outrel[i].r_addend = 0;
2569 }
2570 outrel[0].r_info = ELF32_R_INFO (0, relative_reloc);
2571 erel = lsect->section->contents;
2572 erel += (elf_section_data (lsect->section)->rel_count++
2573 * sizeof (Elf32_External_Rela));
2574 bfd_elf32_swap_reloca_out (output_bfd, outrel, erel);
2575 }
2576 }
2577 }
2578
2579 relocation = (lsect->section->output_offset
2580 + linker_section_ptr->offset
2581 - lsect->sym_offset);
2582
2583 #ifdef DEBUG
2584 fprintf (stderr,
2585 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
2586 lsect->name, (long) relocation, (long) relocation);
2587 #endif
2588
2589 /* Subtract out the addend, because it will get added back in by the normal
2590 processing. */
2591 return relocation - linker_section_ptr->addend;
2592 }
2593 \f
2594 /* Create a special linker section */
2595 static elf_linker_section_t *
2596 ppc_elf_create_linker_section (bfd *abfd,
2597 struct bfd_link_info *info,
2598 enum elf_linker_section_enum which)
2599 {
2600 elf_linker_section_t *lsect;
2601 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2602 asection *s;
2603 bfd_size_type amt;
2604 flagword flags;
2605 const char *name;
2606 const char *rel_name;
2607 const char *sym_name;
2608 bfd_vma sym_offset;
2609
2610 /* Both of these sections are (technically) created by the user
2611 putting data in them, so they shouldn't be marked
2612 SEC_LINKER_CREATED.
2613
2614 The linker creates them so it has somewhere to attach their
2615 respective symbols. In fact, if they were empty it would
2616 be OK to leave the symbol set to 0 (or any random number), because
2617 the appropriate register should never be used. */
2618 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
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 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 }
2659 lsect->section = s;
2660
2661 if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2
2662 && !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2663 return NULL;
2664
2665 s->_raw_size = align_power (s->_raw_size, 2);
2666
2667 #ifdef DEBUG
2668 fprintf (stderr, "Creating section %s, current size = %ld\n",
2669 name, (long) s->_raw_size);
2670 #endif
2671
2672 if (sym_name)
2673 {
2674 struct elf_link_hash_entry *h;
2675 struct bfd_link_hash_entry *bh;
2676
2677 #ifdef DEBUG
2678 fprintf (stderr, "Adding %s to section %s\n", sym_name, name);
2679 #endif
2680 bh = bfd_link_hash_lookup (info->hash, sym_name,
2681 FALSE, FALSE, FALSE);
2682
2683 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
2684 && !(_bfd_generic_link_add_one_symbol
2685 (info, abfd, sym_name, BSF_GLOBAL, s, sym_offset, NULL,
2686 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
2687 return NULL;
2688 h = (struct elf_link_hash_entry *) bh;
2689
2690 h->type = STT_OBJECT;
2691 lsect->sym_hash = h;
2692
2693 if (info->shared
2694 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
2695 return NULL;
2696 }
2697
2698 if (info->shared)
2699 {
2700 s = bfd_make_section_anyway (htab->elf.dynobj, rel_name);
2701 lsect->rel_section = s;
2702 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2703 | SEC_LINKER_CREATED | SEC_READONLY);
2704 if (s == NULL
2705 || ! bfd_set_section_flags (htab->elf.dynobj, s, flags)
2706 || ! bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2707 return NULL;
2708 }
2709
2710 return lsect;
2711 }
2712 \f
2713 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
2714 need to bump up the number of section headers. */
2715
2716 static int
2717 ppc_elf_additional_program_headers (bfd *abfd)
2718 {
2719 asection *s;
2720 int ret;
2721
2722 ret = 0;
2723
2724 s = bfd_get_section_by_name (abfd, ".interp");
2725 if (s != NULL)
2726 ++ret;
2727
2728 s = bfd_get_section_by_name (abfd, ".sbss2");
2729 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
2730 ++ret;
2731
2732 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2733 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
2734 ++ret;
2735
2736 return ret;
2737 }
2738
2739 /* Modify the segment map if needed. */
2740
2741 static bfd_boolean
2742 ppc_elf_modify_segment_map (bfd *abfd ATTRIBUTE_UNUSED)
2743 {
2744 return TRUE;
2745 }
2746 \f
2747 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2748
2749 static bfd_boolean
2750 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2751 {
2752 struct ppc_elf_link_hash_table *htab;
2753 asection *s;
2754 flagword flags;
2755
2756 if (!_bfd_elf_create_got_section (abfd, info))
2757 return FALSE;
2758
2759 htab = ppc_elf_hash_table (info);
2760 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2761 if (s == NULL)
2762 abort ();
2763
2764 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2765 | SEC_LINKER_CREATED);
2766 if (!bfd_set_section_flags (abfd, s, flags))
2767 return FALSE;
2768
2769 htab->relgot = bfd_make_section (abfd, ".rela.got");
2770 if (!htab->relgot
2771 || ! bfd_set_section_flags (abfd, htab->relgot,
2772 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2773 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2774 | SEC_READONLY))
2775 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2776 return FALSE;
2777
2778 return TRUE;
2779 }
2780
2781 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2782 to output sections (just like _bfd_elf_create_dynamic_sections has
2783 to create .dynbss and .rela.bss). */
2784
2785 static bfd_boolean
2786 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2787 {
2788 struct ppc_elf_link_hash_table *htab;
2789 asection *s;
2790 flagword flags;
2791
2792 htab = ppc_elf_hash_table (info);
2793
2794 if (htab->got == NULL
2795 && !ppc_elf_create_got (abfd, info))
2796 return FALSE;
2797
2798 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2799 return FALSE;
2800
2801 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2802 | SEC_LINKER_CREATED);
2803
2804 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2805 htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
2806 if (s == NULL
2807 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
2808 return FALSE;
2809
2810 if (! info->shared)
2811 {
2812 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2813 htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
2814 if (s == NULL
2815 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2816 || ! bfd_set_section_alignment (abfd, s, 2))
2817 return FALSE;
2818 }
2819
2820 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2821 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2822 if (s == NULL)
2823 abort ();
2824
2825 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2826 return bfd_set_section_flags (abfd, s, flags);
2827 }
2828
2829 /* Adjust a symbol defined by a dynamic object and referenced by a
2830 regular object. The current definition is in some section of the
2831 dynamic object, but we're not including those sections. We have to
2832 change the definition to something the rest of the link can
2833 understand. */
2834
2835 static bfd_boolean
2836 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2837 struct elf_link_hash_entry *h)
2838 {
2839 struct ppc_elf_link_hash_table *htab;
2840 asection *s;
2841 unsigned int power_of_two;
2842
2843 #ifdef DEBUG
2844 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
2845 h->root.root.string);
2846 #endif
2847
2848 /* Make sure we know what is going on here. */
2849 htab = ppc_elf_hash_table (info);
2850 BFD_ASSERT (htab->elf.dynobj != NULL
2851 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
2852 || h->weakdef != NULL
2853 || ((h->elf_link_hash_flags
2854 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2855 && (h->elf_link_hash_flags
2856 & ELF_LINK_HASH_REF_REGULAR) != 0
2857 && (h->elf_link_hash_flags
2858 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
2859
2860 /* Deal with function syms. */
2861 if (h->type == STT_FUNC
2862 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2863 {
2864 /* Clear procedure linkage table information for any symbol that
2865 won't need a .plt entry. */
2866 if (h->plt.refcount <= 0
2867 || SYMBOL_CALLS_LOCAL (info, h)
2868 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2869 && h->root.type == bfd_link_hash_undefweak))
2870 {
2871 /* A PLT entry is not required/allowed when:
2872
2873 1. We are not using ld.so; because then the PLT entry
2874 can't be set up, so we can't use one. In this case,
2875 ppc_elf_adjust_dynamic_symbol won't even be called.
2876
2877 2. GC has rendered the entry unused.
2878
2879 3. We know for certain that a call to this symbol
2880 will go to this object, or will remain undefined. */
2881 h->plt.offset = (bfd_vma) -1;
2882 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2883 }
2884 return TRUE;
2885 }
2886 else
2887 h->plt.offset = (bfd_vma) -1;
2888
2889 /* If this is a weak symbol, and there is a real definition, the
2890 processor independent code will have arranged for us to see the
2891 real definition first, and we can just use the same value. */
2892 if (h->weakdef != NULL)
2893 {
2894 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2895 || h->weakdef->root.type == bfd_link_hash_defweak);
2896 h->root.u.def.section = h->weakdef->root.u.def.section;
2897 h->root.u.def.value = h->weakdef->root.u.def.value;
2898 if (ELIMINATE_COPY_RELOCS)
2899 h->elf_link_hash_flags
2900 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
2901 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
2902 return TRUE;
2903 }
2904
2905 /* This is a reference to a symbol defined by a dynamic object which
2906 is not a function. */
2907
2908 /* If we are creating a shared library, we must presume that the
2909 only references to the symbol are via the global offset table.
2910 For such cases we need not do anything here; the relocations will
2911 be handled correctly by relocate_section. */
2912 if (info->shared)
2913 return TRUE;
2914
2915 /* If there are no references to this symbol that do not use the
2916 GOT, we don't need to generate a copy reloc. */
2917 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2918 return TRUE;
2919
2920 if (ELIMINATE_COPY_RELOCS)
2921 {
2922 struct ppc_elf_dyn_relocs *p;
2923 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2924 {
2925 s = p->sec->output_section;
2926 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2927 break;
2928 }
2929
2930 /* If we didn't find any dynamic relocs in read-only sections, then
2931 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2932 if (p == NULL)
2933 {
2934 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2935 return TRUE;
2936 }
2937 }
2938
2939 /* We must allocate the symbol in our .dynbss section, which will
2940 become part of the .bss section of the executable. There will be
2941 an entry for this symbol in the .dynsym section. The dynamic
2942 object will contain position independent code, so all references
2943 from the dynamic object to this symbol will go through the global
2944 offset table. The dynamic linker will use the .dynsym entry to
2945 determine the address it must put in the global offset table, so
2946 both the dynamic object and the regular object will refer to the
2947 same memory location for the variable.
2948
2949 Of course, if the symbol is sufficiently small, we must instead
2950 allocate it in .sbss. FIXME: It would be better to do this if and
2951 only if there were actually SDAREL relocs for that symbol. */
2952
2953 if (h->size <= elf_gp_size (htab->elf.dynobj))
2954 s = htab->dynsbss;
2955 else
2956 s = htab->dynbss;
2957 BFD_ASSERT (s != NULL);
2958
2959 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2960 copy the initial value out of the dynamic object and into the
2961 runtime process image. We need to remember the offset into the
2962 .rela.bss section we are going to use. */
2963 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2964 {
2965 asection *srel;
2966
2967 if (h->size <= elf_gp_size (htab->elf.dynobj))
2968 srel = htab->relsbss;
2969 else
2970 srel = htab->relbss;
2971 BFD_ASSERT (srel != NULL);
2972 srel->_raw_size += sizeof (Elf32_External_Rela);
2973 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2974 }
2975
2976 /* We need to figure out the alignment required for this symbol. I
2977 have no idea how ELF linkers handle this. */
2978 power_of_two = bfd_log2 (h->size);
2979 if (power_of_two > 4)
2980 power_of_two = 4;
2981
2982 /* Apply the required alignment. */
2983 s->_raw_size = BFD_ALIGN (s->_raw_size,
2984 (bfd_size_type) (1 << power_of_two));
2985 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
2986 {
2987 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
2988 return FALSE;
2989 }
2990
2991 /* Define the symbol as being at this point in the section. */
2992 h->root.u.def.section = s;
2993 h->root.u.def.value = s->_raw_size;
2994
2995 /* Increment the section size to make room for the symbol. */
2996 s->_raw_size += h->size;
2997
2998 return TRUE;
2999 }
3000 \f
3001 /* This is the condition under which finish_dynamic_symbol will be
3002 called from elflink.h. If elflink.h doesn't call our
3003 finish_dynamic_symbol routine, we'll need to do something about
3004 initializing any .plt and .got entries in relocate_section. */
3005 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
3006 ((DYN) \
3007 && ((SHARED) \
3008 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
3009 && ((H)->dynindx != -1 \
3010 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
3011
3012 /* Of those relocs that might be copied as dynamic relocs, this macro
3013 selects those that must be copied when linking a shared library,
3014 even when the symbol is local. */
3015
3016 #define MUST_BE_DYN_RELOC(RTYPE) \
3017 ((RTYPE) != R_PPC_REL24 \
3018 && (RTYPE) != R_PPC_REL14 \
3019 && (RTYPE) != R_PPC_REL14_BRTAKEN \
3020 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
3021 && (RTYPE) != R_PPC_REL32)
3022
3023 /* Allocate space in associated reloc sections for dynamic relocs. */
3024
3025 static bfd_boolean
3026 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3027 {
3028 struct bfd_link_info *info = inf;
3029 struct ppc_elf_link_hash_entry *eh;
3030 struct ppc_elf_link_hash_table *htab;
3031 struct ppc_elf_dyn_relocs *p;
3032
3033 if (h->root.type == bfd_link_hash_indirect)
3034 return TRUE;
3035
3036 if (h->root.type == bfd_link_hash_warning)
3037 /* When warning symbols are created, they **replace** the "real"
3038 entry in the hash table, thus we never get to see the real
3039 symbol in a hash traversal. So look at it now. */
3040 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3041
3042 htab = ppc_elf_hash_table (info);
3043 if (htab->elf.dynamic_sections_created
3044 && h->plt.refcount > 0)
3045 {
3046 /* Make sure this symbol is output as a dynamic symbol. */
3047 if (h->dynindx == -1
3048 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3049 {
3050 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
3051 return FALSE;
3052 }
3053
3054 if (info->shared
3055 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3056 {
3057 asection *s = htab->plt;
3058
3059 /* If this is the first .plt entry, make room for the special
3060 first entry. */
3061 if (s->_raw_size == 0)
3062 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
3063
3064 /* The PowerPC PLT is actually composed of two parts, the
3065 first part is 2 words (for a load and a jump), and then
3066 there is a remaining word available at the end. */
3067 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3068 + (PLT_SLOT_SIZE
3069 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE)
3070 / PLT_ENTRY_SIZE)));
3071
3072 /* If this symbol is not defined in a regular file, and we
3073 are not generating a shared library, then set the symbol
3074 to this location in the .plt. This is required to make
3075 function pointers compare as equal between the normal
3076 executable and the shared library. */
3077 if (! info->shared
3078 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3079 {
3080 h->root.u.def.section = s;
3081 h->root.u.def.value = h->plt.offset;
3082 }
3083
3084 /* Make room for this entry. After the 8192nd entry, room
3085 for two entries is allocated. */
3086 s->_raw_size += PLT_ENTRY_SIZE;
3087 if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3088 > PLT_NUM_SINGLE_ENTRIES)
3089 s->_raw_size += PLT_ENTRY_SIZE;
3090
3091 /* We also need to make an entry in the .rela.plt section. */
3092 htab->relplt->_raw_size += sizeof (Elf32_External_Rela);
3093 }
3094 else
3095 {
3096 h->plt.offset = (bfd_vma) -1;
3097 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3098 }
3099 }
3100 else
3101 {
3102 h->plt.offset = (bfd_vma) -1;
3103 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3104 }
3105
3106 eh = (struct ppc_elf_link_hash_entry *) h;
3107 if (eh->elf.got.refcount > 0)
3108 {
3109 /* Make sure this symbol is output as a dynamic symbol. */
3110 if (eh->elf.dynindx == -1
3111 && (eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3112 {
3113 if (!bfd_elf32_link_record_dynamic_symbol (info, &eh->elf))
3114 return FALSE;
3115 }
3116
3117 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3118 && !(eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
3119 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3120 eh->elf.got.offset = (bfd_vma) -1;
3121 else
3122 {
3123 bfd_boolean dyn;
3124 eh->elf.got.offset = htab->got->_raw_size;
3125 if ((eh->tls_mask & TLS_TLS) != 0)
3126 {
3127 if ((eh->tls_mask & TLS_LD) != 0)
3128 htab->got->_raw_size += 8;
3129 if ((eh->tls_mask & TLS_GD) != 0)
3130 htab->got->_raw_size += 8;
3131 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3132 htab->got->_raw_size += 4;
3133 if ((eh->tls_mask & TLS_DTPREL) != 0)
3134 htab->got->_raw_size += 4;
3135 }
3136 else
3137 htab->got->_raw_size += 4;
3138 dyn = htab->elf.dynamic_sections_created;
3139 if ((info->shared
3140 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3141 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3142 || eh->elf.root.type != bfd_link_hash_undefweak))
3143 {
3144 /* All the entries we allocated need relocs. */
3145 htab->relgot->_raw_size
3146 += ((htab->got->_raw_size - eh->elf.got.offset) / 4
3147 * sizeof (Elf32_External_Rela));
3148 /* Except LD only needs one. */
3149 if ((eh->tls_mask & TLS_LD) != 0)
3150 htab->relgot->_raw_size -= sizeof (Elf32_External_Rela);
3151 }
3152 }
3153 }
3154 else
3155 eh->elf.got.offset = (bfd_vma) -1;
3156
3157 if (eh->dyn_relocs == NULL)
3158 return TRUE;
3159
3160 /* In the shared -Bsymbolic case, discard space allocated for
3161 dynamic pc-relative relocs against symbols which turn out to be
3162 defined in regular objects. For the normal shared case, discard
3163 space for relocs that have become local due to symbol visibility
3164 changes. */
3165
3166 if (info->shared)
3167 {
3168 /* Relocs that use pc_count are those that appear on a call insn,
3169 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3170 generated via assembly. We want calls to protected symbols to
3171 resolve directly to the function rather than going via the plt.
3172 If people want function pointer comparisons to work as expected
3173 then they should avoid writing weird assembly. */
3174 if (SYMBOL_CALLS_LOCAL (info, h))
3175 {
3176 struct ppc_elf_dyn_relocs **pp;
3177
3178 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3179 {
3180 p->count -= p->pc_count;
3181 p->pc_count = 0;
3182 if (p->count == 0)
3183 *pp = p->next;
3184 else
3185 pp = &p->next;
3186 }
3187 }
3188
3189 /* Also discard relocs on undefined weak syms with non-default
3190 visibility. */
3191 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3192 && h->root.type == bfd_link_hash_undefweak)
3193 eh->dyn_relocs = NULL;
3194 }
3195 else if (ELIMINATE_COPY_RELOCS)
3196 {
3197 /* For the non-shared case, discard space for relocs against
3198 symbols which turn out to need copy relocs or are not
3199 dynamic. */
3200
3201 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3202 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3203 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3204 {
3205 /* Make sure this symbol is output as a dynamic symbol.
3206 Undefined weak syms won't yet be marked as dynamic. */
3207 if (h->dynindx == -1
3208 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3209 {
3210 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3211 return FALSE;
3212 }
3213
3214 /* If that succeeded, we know we'll be keeping all the
3215 relocs. */
3216 if (h->dynindx != -1)
3217 goto keep;
3218 }
3219
3220 eh->dyn_relocs = NULL;
3221
3222 keep: ;
3223 }
3224
3225 /* Finally, allocate space. */
3226 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3227 {
3228 asection *sreloc = elf_section_data (p->sec)->sreloc;
3229 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
3230 }
3231
3232 return TRUE;
3233 }
3234
3235 /* Find any dynamic relocs that apply to read-only sections. */
3236
3237 static bfd_boolean
3238 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3239 {
3240 struct ppc_elf_dyn_relocs *p;
3241
3242 if (h->root.type == bfd_link_hash_indirect)
3243 return TRUE;
3244
3245 if (h->root.type == bfd_link_hash_warning)
3246 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3247
3248 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3249 {
3250 asection *s = p->sec->output_section;
3251
3252 if (s != NULL
3253 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3254 == (SEC_READONLY | SEC_ALLOC)))
3255 {
3256 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
3257
3258 /* Not an error, just cut short the traversal. */
3259 return FALSE;
3260 }
3261 }
3262 return TRUE;
3263 }
3264
3265 /* Set the sizes of the dynamic sections. */
3266
3267 static bfd_boolean
3268 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3269 struct bfd_link_info *info)
3270 {
3271 struct ppc_elf_link_hash_table *htab;
3272 asection *s;
3273 bfd_boolean relocs;
3274 bfd *ibfd;
3275
3276 #ifdef DEBUG
3277 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
3278 #endif
3279
3280 htab = ppc_elf_hash_table (info);
3281 BFD_ASSERT (htab->elf.dynobj != NULL);
3282
3283 if (elf_hash_table (info)->dynamic_sections_created)
3284 {
3285 /* Set the contents of the .interp section to the interpreter. */
3286 if (info->executable)
3287 {
3288 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3289 BFD_ASSERT (s != NULL);
3290 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3291 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3292 }
3293 }
3294
3295 if (htab->tlsld_got.refcount > 0)
3296 {
3297 htab->tlsld_got.offset = htab->got->_raw_size;
3298 htab->got->_raw_size += 8;
3299 if (info->shared)
3300 htab->relgot->_raw_size += sizeof (Elf32_External_Rela);
3301 }
3302 else
3303 htab->tlsld_got.offset = (bfd_vma) -1;
3304
3305 /* Set up .got offsets for local syms, and space for local dynamic
3306 relocs. */
3307 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3308 {
3309 bfd_signed_vma *local_got;
3310 bfd_signed_vma *end_local_got;
3311 char *lgot_masks;
3312 bfd_size_type locsymcount;
3313 Elf_Internal_Shdr *symtab_hdr;
3314 asection *srel;
3315
3316 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
3317 continue;
3318
3319 for (s = ibfd->sections; s != NULL; s = s->next)
3320 {
3321 struct ppc_elf_dyn_relocs *p;
3322
3323 for (p = ((struct ppc_elf_dyn_relocs *)
3324 elf_section_data (s)->local_dynrel);
3325 p != NULL;
3326 p = p->next)
3327 {
3328 if (!bfd_is_abs_section (p->sec)
3329 && bfd_is_abs_section (p->sec->output_section))
3330 {
3331 /* Input section has been discarded, either because
3332 it is a copy of a linkonce section or due to
3333 linker script /DISCARD/, so we'll be discarding
3334 the relocs too. */
3335 }
3336 else if (p->count != 0)
3337 {
3338 elf_section_data (p->sec)->sreloc->_raw_size
3339 += p->count * sizeof (Elf32_External_Rela);
3340 if ((p->sec->output_section->flags
3341 & (SEC_READONLY | SEC_ALLOC))
3342 == (SEC_READONLY | SEC_ALLOC))
3343 info->flags |= DF_TEXTREL;
3344 }
3345 }
3346 }
3347
3348 local_got = elf_local_got_refcounts (ibfd);
3349 if (!local_got)
3350 continue;
3351
3352 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3353 locsymcount = symtab_hdr->sh_info;
3354 end_local_got = local_got + locsymcount;
3355 lgot_masks = (char *) end_local_got;
3356 s = htab->got;
3357 srel = htab->relgot;
3358 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
3359 if (*local_got > 0)
3360 {
3361 if (*lgot_masks == (TLS_TLS | TLS_LD))
3362 {
3363 /* If just an LD reloc, we'll just use
3364 htab->tlsld_got.offset. */
3365 if (htab->tlsld_got.offset == (bfd_vma) -1)
3366 {
3367 htab->tlsld_got.offset = s->_raw_size;
3368 s->_raw_size += 8;
3369 if (info->shared)
3370 srel->_raw_size += sizeof (Elf32_External_Rela);
3371 }
3372 *local_got = (bfd_vma) -1;
3373 }
3374 else
3375 {
3376 *local_got = s->_raw_size;
3377 if ((*lgot_masks & TLS_TLS) != 0)
3378 {
3379 if ((*lgot_masks & TLS_GD) != 0)
3380 s->_raw_size += 8;
3381 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3382 s->_raw_size += 4;
3383 if ((*lgot_masks & TLS_DTPREL) != 0)
3384 s->_raw_size += 4;
3385 }
3386 else
3387 s->_raw_size += 4;
3388 if (info->shared)
3389 srel->_raw_size += ((s->_raw_size - *local_got) / 4
3390 * sizeof (Elf32_External_Rela));
3391 }
3392 }
3393 else
3394 *local_got = (bfd_vma) -1;
3395 }
3396
3397 /* Allocate space for global sym dynamic relocs. */
3398 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
3399
3400 /* We've now determined the sizes of the various dynamic sections.
3401 Allocate memory for them. */
3402 relocs = FALSE;
3403 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
3404 {
3405 if ((s->flags & SEC_LINKER_CREATED) == 0)
3406 continue;
3407
3408 if (s == htab->plt
3409 || s == htab->got
3410 || (htab->sdata != NULL && s == htab->sdata->section)
3411 || (htab->sdata2 != NULL && s == htab->sdata2->section))
3412 {
3413 /* Strip this section if we don't need it; see the
3414 comment below. */
3415 }
3416 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
3417 {
3418 if (s->_raw_size == 0)
3419 {
3420 /* If we don't need this section, strip it from the
3421 output file. This is mostly to handle .rela.bss and
3422 .rela.plt. We must create both sections in
3423 create_dynamic_sections, because they must be created
3424 before the linker maps input sections to output
3425 sections. The linker does that before
3426 adjust_dynamic_symbol is called, and it is that
3427 function which decides whether anything needs to go
3428 into these sections. */
3429 }
3430 else
3431 {
3432 /* Remember whether there are any relocation sections. */
3433 relocs = TRUE;
3434
3435 /* We use the reloc_count field as a counter if we need
3436 to copy relocs into the output file. */
3437 s->reloc_count = 0;
3438 }
3439 }
3440 else
3441 {
3442 /* It's not one of our sections, so don't allocate space. */
3443 continue;
3444 }
3445
3446 if (s->_raw_size == 0)
3447 {
3448 _bfd_strip_section_from_output (info, s);
3449 continue;
3450 }
3451
3452 /* Allocate memory for the section contents. */
3453 s->contents = bfd_zalloc (htab->elf.dynobj, s->_raw_size);
3454 if (s->contents == NULL)
3455 return FALSE;
3456 }
3457
3458 if (htab->elf.dynamic_sections_created)
3459 {
3460 /* Add some entries to the .dynamic section. We fill in the
3461 values later, in ppc_elf_finish_dynamic_sections, but we
3462 must add the entries now so that we get the correct size for
3463 the .dynamic section. The DT_DEBUG entry is filled in by the
3464 dynamic linker and used by the debugger. */
3465 #define add_dynamic_entry(TAG, VAL) \
3466 bfd_elf32_add_dynamic_entry (info, (TAG), (VAL))
3467
3468 if (info->executable)
3469 {
3470 if (!add_dynamic_entry (DT_DEBUG, 0))
3471 return FALSE;
3472 }
3473
3474 if (htab->plt != NULL && htab->plt->_raw_size != 0)
3475 {
3476 if (!add_dynamic_entry (DT_PLTGOT, 0)
3477 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3478 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3479 || !add_dynamic_entry (DT_JMPREL, 0))
3480 return FALSE;
3481 }
3482
3483 if (relocs)
3484 {
3485 if (!add_dynamic_entry (DT_RELA, 0)
3486 || !add_dynamic_entry (DT_RELASZ, 0)
3487 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3488 return FALSE;
3489 }
3490
3491 /* If any dynamic relocs apply to a read-only section, then we
3492 need a DT_TEXTREL entry. */
3493 if ((info->flags & DF_TEXTREL) == 0)
3494 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
3495 info);
3496
3497 if ((info->flags & DF_TEXTREL) != 0)
3498 {
3499 if (!add_dynamic_entry (DT_TEXTREL, 0))
3500 return FALSE;
3501 }
3502 }
3503 #undef add_dynamic_entry
3504
3505 return TRUE;
3506 }
3507 \f
3508 static bfd_boolean
3509 update_local_sym_info (bfd *abfd,
3510 Elf_Internal_Shdr *symtab_hdr,
3511 unsigned long r_symndx,
3512 int tls_type)
3513 {
3514 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3515 char *local_got_tls_masks;
3516
3517 if (local_got_refcounts == NULL)
3518 {
3519 bfd_size_type size = symtab_hdr->sh_info;
3520
3521 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3522 local_got_refcounts = bfd_zalloc (abfd, size);
3523 if (local_got_refcounts == NULL)
3524 return FALSE;
3525 elf_local_got_refcounts (abfd) = local_got_refcounts;
3526 }
3527
3528 local_got_refcounts[r_symndx] += 1;
3529 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3530 local_got_tls_masks[r_symndx] |= tls_type;
3531 return TRUE;
3532 }
3533
3534 static void
3535 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3536 {
3537 (*_bfd_error_handler)
3538 (_("%s: relocation %s cannot be used when making a shared object"),
3539 bfd_archive_filename (abfd),
3540 ppc_elf_howto_table[r_type]->name);
3541 bfd_set_error (bfd_error_bad_value);
3542 }
3543
3544 /* Look through the relocs for a section during the first phase, and
3545 allocate space in the global offset table or procedure linkage
3546 table. */
3547
3548 static bfd_boolean
3549 ppc_elf_check_relocs (bfd *abfd,
3550 struct bfd_link_info *info,
3551 asection *sec,
3552 const Elf_Internal_Rela *relocs)
3553 {
3554 struct ppc_elf_link_hash_table *htab;
3555 Elf_Internal_Shdr *symtab_hdr;
3556 struct elf_link_hash_entry **sym_hashes;
3557 const Elf_Internal_Rela *rel;
3558 const Elf_Internal_Rela *rel_end;
3559 asection *sreloc;
3560
3561 if (info->relocatable)
3562 return TRUE;
3563
3564 #ifdef DEBUG
3565 fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
3566 bfd_get_section_name (abfd, sec),
3567 bfd_archive_filename (abfd));
3568 #endif
3569
3570 /* Initialize howto table if not already done. */
3571 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3572 ppc_elf_howto_init ();
3573
3574 /* Create the linker generated sections all the time so that the
3575 special symbols are created. */
3576 htab = ppc_elf_hash_table (info);
3577 if (htab->sdata == NULL)
3578 {
3579 htab->sdata = ppc_elf_create_linker_section (abfd, info,
3580 LINKER_SECTION_SDATA);
3581 if (htab->sdata == NULL)
3582 return FALSE;
3583 }
3584
3585 if (htab->sdata2 == NULL)
3586 {
3587 htab->sdata2 = ppc_elf_create_linker_section (abfd, info,
3588 LINKER_SECTION_SDATA2);
3589 if (htab->sdata2 == NULL)
3590 return FALSE;
3591 }
3592
3593 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3594 sym_hashes = elf_sym_hashes (abfd);
3595 sreloc = NULL;
3596
3597 rel_end = relocs + sec->reloc_count;
3598 for (rel = relocs; rel < rel_end; rel++)
3599 {
3600 unsigned long r_symndx;
3601 enum elf_ppc_reloc_type r_type;
3602 struct elf_link_hash_entry *h;
3603 int tls_type = 0;
3604
3605 r_symndx = ELF32_R_SYM (rel->r_info);
3606 if (r_symndx < symtab_hdr->sh_info)
3607 h = NULL;
3608 else
3609 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3610
3611 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3612 This shows up in particular in an R_PPC_ADDR32 in the eabi
3613 startup code. */
3614 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3615 {
3616 if (htab->got == NULL)
3617 {
3618 if (htab->elf.dynobj == NULL)
3619 htab->elf.dynobj = abfd;
3620 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3621 return FALSE;
3622 }
3623 }
3624
3625 r_type = ELF32_R_TYPE (rel->r_info);
3626 switch (r_type)
3627 {
3628 case R_PPC_GOT_TLSLD16:
3629 case R_PPC_GOT_TLSLD16_LO:
3630 case R_PPC_GOT_TLSLD16_HI:
3631 case R_PPC_GOT_TLSLD16_HA:
3632 htab->tlsld_got.refcount += 1;
3633 tls_type = TLS_TLS | TLS_LD;
3634 goto dogottls;
3635
3636 case R_PPC_GOT_TLSGD16:
3637 case R_PPC_GOT_TLSGD16_LO:
3638 case R_PPC_GOT_TLSGD16_HI:
3639 case R_PPC_GOT_TLSGD16_HA:
3640 tls_type = TLS_TLS | TLS_GD;
3641 goto dogottls;
3642
3643 case R_PPC_GOT_TPREL16:
3644 case R_PPC_GOT_TPREL16_LO:
3645 case R_PPC_GOT_TPREL16_HI:
3646 case R_PPC_GOT_TPREL16_HA:
3647 if (info->shared)
3648 info->flags |= DF_STATIC_TLS;
3649 tls_type = TLS_TLS | TLS_TPREL;
3650 goto dogottls;
3651
3652 case R_PPC_GOT_DTPREL16:
3653 case R_PPC_GOT_DTPREL16_LO:
3654 case R_PPC_GOT_DTPREL16_HI:
3655 case R_PPC_GOT_DTPREL16_HA:
3656 tls_type = TLS_TLS | TLS_DTPREL;
3657 dogottls:
3658 sec->has_tls_reloc = 1;
3659 /* Fall thru */
3660
3661 /* GOT16 relocations */
3662 case R_PPC_GOT16:
3663 case R_PPC_GOT16_LO:
3664 case R_PPC_GOT16_HI:
3665 case R_PPC_GOT16_HA:
3666 /* This symbol requires a global offset table entry. */
3667 if (htab->got == NULL)
3668 {
3669 if (htab->elf.dynobj == NULL)
3670 htab->elf.dynobj = abfd;
3671 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3672 return FALSE;
3673 }
3674 if (h != NULL)
3675 {
3676 h->got.refcount += 1;
3677 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3678 }
3679 else
3680 /* This is a global offset table entry for a local symbol. */
3681 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3682 return FALSE;
3683 break;
3684
3685 /* Indirect .sdata relocation. */
3686 case R_PPC_EMB_SDAI16:
3687 if (info->shared)
3688 {
3689 bad_shared_reloc (abfd, r_type);
3690 return FALSE;
3691 }
3692 if (!elf_create_pointer_linker_section (abfd, info,
3693 htab->sdata, h, rel))
3694 return FALSE;
3695 break;
3696
3697 /* Indirect .sdata2 relocation. */
3698 case R_PPC_EMB_SDA2I16:
3699 if (info->shared)
3700 {
3701 bad_shared_reloc (abfd, r_type);
3702 return FALSE;
3703 }
3704 if (!elf_create_pointer_linker_section (abfd, info,
3705 htab->sdata2, h, rel))
3706 return FALSE;
3707 break;
3708
3709 case R_PPC_SDAREL16:
3710 case R_PPC_EMB_SDA2REL:
3711 case R_PPC_EMB_SDA21:
3712 case R_PPC_EMB_RELSDA:
3713 case R_PPC_EMB_NADDR32:
3714 case R_PPC_EMB_NADDR16:
3715 case R_PPC_EMB_NADDR16_LO:
3716 case R_PPC_EMB_NADDR16_HI:
3717 case R_PPC_EMB_NADDR16_HA:
3718 if (info->shared)
3719 {
3720 bad_shared_reloc (abfd, r_type);
3721 return FALSE;
3722 }
3723 break;
3724
3725 case R_PPC_PLT32:
3726 case R_PPC_PLTREL24:
3727 case R_PPC_PLTREL32:
3728 case R_PPC_PLT16_LO:
3729 case R_PPC_PLT16_HI:
3730 case R_PPC_PLT16_HA:
3731 #ifdef DEBUG
3732 fprintf (stderr, "Reloc requires a PLT entry\n");
3733 #endif
3734 /* This symbol requires a procedure linkage table entry. We
3735 actually build the entry in finish_dynamic_symbol,
3736 because this might be a case of linking PIC code without
3737 linking in any dynamic objects, in which case we don't
3738 need to generate a procedure linkage table after all. */
3739
3740 if (h == NULL)
3741 {
3742 /* It does not make sense to have a procedure linkage
3743 table entry for a local symbol. */
3744 (*_bfd_error_handler) (_("%s(%s+0x%lx): %s reloc against "
3745 "local symbol"),
3746 bfd_archive_filename (abfd),
3747 sec->name,
3748 (long) rel->r_offset,
3749 ppc_elf_howto_table[r_type]->name);
3750 bfd_set_error (bfd_error_bad_value);
3751 return FALSE;
3752 }
3753
3754 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3755 h->plt.refcount++;
3756 break;
3757
3758 /* The following relocations don't need to propagate the
3759 relocation if linking a shared object since they are
3760 section relative. */
3761 case R_PPC_SECTOFF:
3762 case R_PPC_SECTOFF_LO:
3763 case R_PPC_SECTOFF_HI:
3764 case R_PPC_SECTOFF_HA:
3765 case R_PPC_DTPREL16:
3766 case R_PPC_DTPREL16_LO:
3767 case R_PPC_DTPREL16_HI:
3768 case R_PPC_DTPREL16_HA:
3769 case R_PPC_TOC16:
3770 break;
3771
3772 /* This are just markers. */
3773 case R_PPC_TLS:
3774 case R_PPC_EMB_MRKREF:
3775 case R_PPC_NONE:
3776 case R_PPC_max:
3777 break;
3778
3779 /* These should only appear in dynamic objects. */
3780 case R_PPC_COPY:
3781 case R_PPC_GLOB_DAT:
3782 case R_PPC_JMP_SLOT:
3783 case R_PPC_RELATIVE:
3784 break;
3785
3786 /* These aren't handled yet. We'll report an error later. */
3787 case R_PPC_ADDR30:
3788 case R_PPC_EMB_RELSEC16:
3789 case R_PPC_EMB_RELST_LO:
3790 case R_PPC_EMB_RELST_HI:
3791 case R_PPC_EMB_RELST_HA:
3792 case R_PPC_EMB_BIT_FLD:
3793 break;
3794
3795 /* This refers only to functions defined in the shared library. */
3796 case R_PPC_LOCAL24PC:
3797 break;
3798
3799 /* This relocation describes the C++ object vtable hierarchy.
3800 Reconstruct it for later use during GC. */
3801 case R_PPC_GNU_VTINHERIT:
3802 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3803 return FALSE;
3804 break;
3805
3806 /* This relocation describes which C++ vtable entries are actually
3807 used. Record for later use during GC. */
3808 case R_PPC_GNU_VTENTRY:
3809 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3810 return FALSE;
3811 break;
3812
3813 /* We shouldn't really be seeing these. */
3814 case R_PPC_TPREL32:
3815 if (info->shared)
3816 info->flags |= DF_STATIC_TLS;
3817 goto dodyn;
3818
3819 /* Nor these. */
3820 case R_PPC_DTPMOD32:
3821 case R_PPC_DTPREL32:
3822 goto dodyn;
3823
3824 case R_PPC_TPREL16:
3825 case R_PPC_TPREL16_LO:
3826 case R_PPC_TPREL16_HI:
3827 case R_PPC_TPREL16_HA:
3828 if (info->shared)
3829 info->flags |= DF_STATIC_TLS;
3830 goto dodyn;
3831
3832 /* When creating a shared object, we must copy these
3833 relocs into the output file. We create a reloc
3834 section in dynobj and make room for the reloc. */
3835 case R_PPC_REL24:
3836 case R_PPC_REL14:
3837 case R_PPC_REL14_BRTAKEN:
3838 case R_PPC_REL14_BRNTAKEN:
3839 case R_PPC_REL32:
3840 if (h == NULL
3841 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3842 break;
3843 /* fall through */
3844
3845 case R_PPC_ADDR32:
3846 case R_PPC_ADDR24:
3847 case R_PPC_ADDR16:
3848 case R_PPC_ADDR16_LO:
3849 case R_PPC_ADDR16_HI:
3850 case R_PPC_ADDR16_HA:
3851 case R_PPC_ADDR14:
3852 case R_PPC_ADDR14_BRTAKEN:
3853 case R_PPC_ADDR14_BRNTAKEN:
3854 case R_PPC_UADDR32:
3855 case R_PPC_UADDR16:
3856 if (h != NULL && !info->shared)
3857 {
3858 /* We may need a plt entry if the symbol turns out to be
3859 a function defined in a dynamic object. */
3860 h->plt.refcount++;
3861
3862 /* We may need a copy reloc too. */
3863 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3864 }
3865
3866 dodyn:
3867 /* If we are creating a shared library, and this is a reloc
3868 against a global symbol, or a non PC relative reloc
3869 against a local symbol, then we need to copy the reloc
3870 into the shared library. However, if we are linking with
3871 -Bsymbolic, we do not need to copy a reloc against a
3872 global symbol which is defined in an object we are
3873 including in the link (i.e., DEF_REGULAR is set). At
3874 this point we have not seen all the input files, so it is
3875 possible that DEF_REGULAR is not set now but will be set
3876 later (it is never cleared). In case of a weak definition,
3877 DEF_REGULAR may be cleared later by a strong definition in
3878 a shared library. We account for that possibility below by
3879 storing information in the dyn_relocs field of the hash
3880 table entry. A similar situation occurs when creating
3881 shared libraries and symbol visibility changes render the
3882 symbol local.
3883
3884 If on the other hand, we are creating an executable, we
3885 may need to keep relocations for symbols satisfied by a
3886 dynamic library if we manage to avoid copy relocs for the
3887 symbol. */
3888 if ((info->shared
3889 && (MUST_BE_DYN_RELOC (r_type)
3890 || (h != NULL
3891 && (! info->symbolic
3892 || h->root.type == bfd_link_hash_defweak
3893 || (h->elf_link_hash_flags
3894 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3895 || (ELIMINATE_COPY_RELOCS
3896 && !info->shared
3897 && (sec->flags & SEC_ALLOC) != 0
3898 && h != NULL
3899 && (h->root.type == bfd_link_hash_defweak
3900 || (h->elf_link_hash_flags
3901 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3902 {
3903 struct ppc_elf_dyn_relocs *p;
3904 struct ppc_elf_dyn_relocs **head;
3905
3906 #ifdef DEBUG
3907 fprintf (stderr,
3908 "ppc_elf_check_relocs needs to "
3909 "create relocation for %s\n",
3910 (h && h->root.root.string
3911 ? h->root.root.string : "<unknown>"));
3912 #endif
3913 if (sreloc == NULL)
3914 {
3915 const char *name;
3916
3917 name = (bfd_elf_string_from_elf_section
3918 (abfd,
3919 elf_elfheader (abfd)->e_shstrndx,
3920 elf_section_data (sec)->rel_hdr.sh_name));
3921 if (name == NULL)
3922 return FALSE;
3923
3924 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3925 && strcmp (bfd_get_section_name (abfd, sec),
3926 name + 5) == 0);
3927
3928 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3929 if (sreloc == NULL)
3930 {
3931 flagword flags;
3932
3933 sreloc = bfd_make_section (htab->elf.dynobj, name);
3934 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3935 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3936 if ((sec->flags & SEC_ALLOC) != 0)
3937 flags |= SEC_ALLOC | SEC_LOAD;
3938 if (sreloc == NULL
3939 || ! bfd_set_section_flags (htab->elf.dynobj,
3940 sreloc, flags)
3941 || ! bfd_set_section_alignment (htab->elf.dynobj,
3942 sreloc, 2))
3943 return FALSE;
3944 }
3945 elf_section_data (sec)->sreloc = sreloc;
3946 }
3947
3948 /* If this is a global symbol, we count the number of
3949 relocations we need for this symbol. */
3950 if (h != NULL)
3951 {
3952 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3953 }
3954 else
3955 {
3956 /* Track dynamic relocs needed for local syms too.
3957 We really need local syms available to do this
3958 easily. Oh well. */
3959
3960 asection *s;
3961 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3962 sec, r_symndx);
3963 if (s == NULL)
3964 return FALSE;
3965
3966 head = ((struct ppc_elf_dyn_relocs **)
3967 &elf_section_data (s)->local_dynrel);
3968 }
3969
3970 p = *head;
3971 if (p == NULL || p->sec != sec)
3972 {
3973 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3974 if (p == NULL)
3975 return FALSE;
3976 p->next = *head;
3977 *head = p;
3978 p->sec = sec;
3979 p->count = 0;
3980 p->pc_count = 0;
3981 }
3982
3983 p->count += 1;
3984 if (!MUST_BE_DYN_RELOC (r_type))
3985 p->pc_count += 1;
3986 }
3987
3988 break;
3989 }
3990 }
3991
3992 return TRUE;
3993 }
3994
3995 /* Return the section that should be marked against GC for a given
3996 relocation. */
3997
3998 static asection *
3999 ppc_elf_gc_mark_hook (asection *sec,
4000 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4001 Elf_Internal_Rela *rel,
4002 struct elf_link_hash_entry *h,
4003 Elf_Internal_Sym *sym)
4004 {
4005 if (h != NULL)
4006 {
4007 switch (ELF32_R_TYPE (rel->r_info))
4008 {
4009 case R_PPC_GNU_VTINHERIT:
4010 case R_PPC_GNU_VTENTRY:
4011 break;
4012
4013 default:
4014 switch (h->root.type)
4015 {
4016 case bfd_link_hash_defined:
4017 case bfd_link_hash_defweak:
4018 return h->root.u.def.section;
4019
4020 case bfd_link_hash_common:
4021 return h->root.u.c.p->section;
4022
4023 default:
4024 break;
4025 }
4026 }
4027 }
4028 else
4029 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4030
4031 return NULL;
4032 }
4033
4034 /* Update the got, plt and dynamic reloc reference counts for the
4035 section being removed. */
4036
4037 static bfd_boolean
4038 ppc_elf_gc_sweep_hook (bfd *abfd,
4039 struct bfd_link_info *info,
4040 asection *sec,
4041 const Elf_Internal_Rela *relocs)
4042 {
4043 struct ppc_elf_link_hash_table *htab;
4044 Elf_Internal_Shdr *symtab_hdr;
4045 struct elf_link_hash_entry **sym_hashes;
4046 bfd_signed_vma *local_got_refcounts;
4047 const Elf_Internal_Rela *rel, *relend;
4048
4049 elf_section_data (sec)->local_dynrel = NULL;
4050
4051 htab = ppc_elf_hash_table (info);
4052 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4053 sym_hashes = elf_sym_hashes (abfd);
4054 local_got_refcounts = elf_local_got_refcounts (abfd);
4055
4056 relend = relocs + sec->reloc_count;
4057 for (rel = relocs; rel < relend; rel++)
4058 {
4059 unsigned long r_symndx;
4060 enum elf_ppc_reloc_type r_type;
4061 struct elf_link_hash_entry *h = NULL;
4062
4063 r_symndx = ELF32_R_SYM (rel->r_info);
4064 if (r_symndx >= symtab_hdr->sh_info)
4065 {
4066 struct ppc_elf_dyn_relocs **pp, *p;
4067 struct ppc_elf_link_hash_entry *eh;
4068
4069 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4070 eh = (struct ppc_elf_link_hash_entry *) h;
4071
4072 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4073 if (p->sec == sec)
4074 {
4075 /* Everything must go for SEC. */
4076 *pp = p->next;
4077 break;
4078 }
4079 }
4080
4081 r_type = ELF32_R_TYPE (rel->r_info);
4082 switch (r_type)
4083 {
4084 case R_PPC_GOT_TLSLD16:
4085 case R_PPC_GOT_TLSLD16_LO:
4086 case R_PPC_GOT_TLSLD16_HI:
4087 case R_PPC_GOT_TLSLD16_HA:
4088 htab->tlsld_got.refcount -= 1;
4089 /* Fall thru */
4090
4091 case R_PPC_GOT_TLSGD16:
4092 case R_PPC_GOT_TLSGD16_LO:
4093 case R_PPC_GOT_TLSGD16_HI:
4094 case R_PPC_GOT_TLSGD16_HA:
4095 case R_PPC_GOT_TPREL16:
4096 case R_PPC_GOT_TPREL16_LO:
4097 case R_PPC_GOT_TPREL16_HI:
4098 case R_PPC_GOT_TPREL16_HA:
4099 case R_PPC_GOT_DTPREL16:
4100 case R_PPC_GOT_DTPREL16_LO:
4101 case R_PPC_GOT_DTPREL16_HI:
4102 case R_PPC_GOT_DTPREL16_HA:
4103 case R_PPC_GOT16:
4104 case R_PPC_GOT16_LO:
4105 case R_PPC_GOT16_HI:
4106 case R_PPC_GOT16_HA:
4107 if (h != NULL)
4108 {
4109 if (h->got.refcount > 0)
4110 h->got.refcount--;
4111 }
4112 else if (local_got_refcounts != NULL)
4113 {
4114 if (local_got_refcounts[r_symndx] > 0)
4115 local_got_refcounts[r_symndx]--;
4116 }
4117 break;
4118
4119 case R_PPC_REL24:
4120 case R_PPC_REL14:
4121 case R_PPC_REL14_BRTAKEN:
4122 case R_PPC_REL14_BRNTAKEN:
4123 case R_PPC_REL32:
4124 if (h == NULL
4125 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4126 break;
4127 /* Fall thru */
4128
4129 case R_PPC_ADDR32:
4130 case R_PPC_ADDR24:
4131 case R_PPC_ADDR16:
4132 case R_PPC_ADDR16_LO:
4133 case R_PPC_ADDR16_HI:
4134 case R_PPC_ADDR16_HA:
4135 case R_PPC_ADDR14:
4136 case R_PPC_ADDR14_BRTAKEN:
4137 case R_PPC_ADDR14_BRNTAKEN:
4138 case R_PPC_UADDR32:
4139 case R_PPC_UADDR16:
4140 case R_PPC_PLT32:
4141 case R_PPC_PLTREL24:
4142 case R_PPC_PLT16_LO:
4143 case R_PPC_PLT16_HI:
4144 case R_PPC_PLT16_HA:
4145 if (h != NULL)
4146 {
4147 if (h->plt.refcount > 0)
4148 h->plt.refcount--;
4149 }
4150 break;
4151
4152 default:
4153 break;
4154 }
4155 }
4156 return TRUE;
4157 }
4158
4159 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4160
4161 asection *
4162 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4163 {
4164 struct ppc_elf_link_hash_table *htab;
4165
4166 htab = ppc_elf_hash_table (info);
4167 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4168 FALSE, FALSE, TRUE);
4169
4170 return _bfd_elf_tls_setup (obfd, info);
4171 }
4172
4173 /* Run through all the TLS relocs looking for optimization
4174 opportunities. */
4175
4176 bfd_boolean
4177 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4178 struct bfd_link_info *info)
4179 {
4180 bfd *ibfd;
4181 asection *sec;
4182 struct ppc_elf_link_hash_table *htab;
4183
4184 if (info->relocatable || info->shared)
4185 return TRUE;
4186
4187 htab = ppc_elf_hash_table (info);
4188 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4189 {
4190 Elf_Internal_Sym *locsyms = NULL;
4191 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4192
4193 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4194 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4195 {
4196 Elf_Internal_Rela *relstart, *rel, *relend;
4197 int expecting_tls_get_addr;
4198
4199 /* Read the relocations. */
4200 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4201 info->keep_memory);
4202 if (relstart == NULL)
4203 return FALSE;
4204
4205 expecting_tls_get_addr = 0;
4206 relend = relstart + sec->reloc_count;
4207 for (rel = relstart; rel < relend; rel++)
4208 {
4209 enum elf_ppc_reloc_type r_type;
4210 unsigned long r_symndx;
4211 struct elf_link_hash_entry *h = NULL;
4212 char *tls_mask;
4213 char tls_set, tls_clear;
4214 bfd_boolean is_local;
4215
4216 r_symndx = ELF32_R_SYM (rel->r_info);
4217 if (r_symndx >= symtab_hdr->sh_info)
4218 {
4219 struct elf_link_hash_entry **sym_hashes;
4220
4221 sym_hashes = elf_sym_hashes (ibfd);
4222 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4223 while (h->root.type == bfd_link_hash_indirect
4224 || h->root.type == bfd_link_hash_warning)
4225 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4226 }
4227
4228 is_local = FALSE;
4229 if (h == NULL
4230 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
4231 is_local = TRUE;
4232
4233 r_type = ELF32_R_TYPE (rel->r_info);
4234 switch (r_type)
4235 {
4236 case R_PPC_GOT_TLSLD16:
4237 case R_PPC_GOT_TLSLD16_LO:
4238 case R_PPC_GOT_TLSLD16_HI:
4239 case R_PPC_GOT_TLSLD16_HA:
4240 /* These relocs should never be against a symbol
4241 defined in a shared lib. Leave them alone if
4242 that turns out to be the case. */
4243 expecting_tls_get_addr = 0;
4244 htab->tlsld_got.refcount -= 1;
4245 if (!is_local)
4246 continue;
4247
4248 /* LD -> LE */
4249 tls_set = 0;
4250 tls_clear = TLS_LD;
4251 expecting_tls_get_addr = 1;
4252 break;
4253
4254 case R_PPC_GOT_TLSGD16:
4255 case R_PPC_GOT_TLSGD16_LO:
4256 case R_PPC_GOT_TLSGD16_HI:
4257 case R_PPC_GOT_TLSGD16_HA:
4258 if (is_local)
4259 /* GD -> LE */
4260 tls_set = 0;
4261 else
4262 /* GD -> IE */
4263 tls_set = TLS_TLS | TLS_TPRELGD;
4264 tls_clear = TLS_GD;
4265 expecting_tls_get_addr = 1;
4266 break;
4267
4268 case R_PPC_GOT_TPREL16:
4269 case R_PPC_GOT_TPREL16_LO:
4270 case R_PPC_GOT_TPREL16_HI:
4271 case R_PPC_GOT_TPREL16_HA:
4272 expecting_tls_get_addr = 0;
4273 if (is_local)
4274 {
4275 /* IE -> LE */
4276 tls_set = 0;
4277 tls_clear = TLS_TPREL;
4278 break;
4279 }
4280 else
4281 continue;
4282
4283 case R_PPC_REL14:
4284 case R_PPC_REL14_BRTAKEN:
4285 case R_PPC_REL14_BRNTAKEN:
4286 case R_PPC_REL24:
4287 if (expecting_tls_get_addr
4288 && h != NULL
4289 && h == htab->tls_get_addr)
4290 {
4291 if (h->plt.refcount > 0)
4292 h->plt.refcount -= 1;
4293 }
4294 expecting_tls_get_addr = 0;
4295 continue;
4296
4297 default:
4298 expecting_tls_get_addr = 0;
4299 continue;
4300 }
4301
4302 if (h != NULL)
4303 {
4304 if (tls_set == 0)
4305 {
4306 /* We managed to get rid of a got entry. */
4307 if (h->got.refcount > 0)
4308 h->got.refcount -= 1;
4309 }
4310 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4311 }
4312 else
4313 {
4314 Elf_Internal_Sym *sym;
4315 bfd_signed_vma *lgot_refs;
4316 char *lgot_masks;
4317
4318 if (locsyms == NULL)
4319 {
4320 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4321 if (locsyms == NULL)
4322 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4323 symtab_hdr->sh_info,
4324 0, NULL, NULL, NULL);
4325 if (locsyms == NULL)
4326 {
4327 if (elf_section_data (sec)->relocs != relstart)
4328 free (relstart);
4329 return FALSE;
4330 }
4331 }
4332 sym = locsyms + r_symndx;
4333 lgot_refs = elf_local_got_refcounts (ibfd);
4334 if (lgot_refs == NULL)
4335 abort ();
4336 if (tls_set == 0)
4337 {
4338 /* We managed to get rid of a got entry. */
4339 if (lgot_refs[r_symndx] > 0)
4340 lgot_refs[r_symndx] -= 1;
4341 }
4342 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4343 tls_mask = &lgot_masks[r_symndx];
4344 }
4345
4346 *tls_mask |= tls_set;
4347 *tls_mask &= ~tls_clear;
4348 }
4349
4350 if (elf_section_data (sec)->relocs != relstart)
4351 free (relstart);
4352 }
4353
4354 if (locsyms != NULL
4355 && (symtab_hdr->contents != (unsigned char *) locsyms))
4356 {
4357 if (!info->keep_memory)
4358 free (locsyms);
4359 else
4360 symtab_hdr->contents = (unsigned char *) locsyms;
4361 }
4362 }
4363 return TRUE;
4364 }
4365 \f
4366 /* Hook called by the linker routine which adds symbols from an object
4367 file. We use it to put .comm items in .sbss, and not .bss. */
4368
4369 static bfd_boolean
4370 ppc_elf_add_symbol_hook (bfd *abfd,
4371 struct bfd_link_info *info,
4372 const Elf_Internal_Sym *sym,
4373 const char **namep ATTRIBUTE_UNUSED,
4374 flagword *flagsp ATTRIBUTE_UNUSED,
4375 asection **secp,
4376 bfd_vma *valp)
4377 {
4378 if (sym->st_shndx == SHN_COMMON
4379 && !info->relocatable
4380 && sym->st_size <= elf_gp_size (abfd)
4381 && (info->hash->creator == abfd->xvec
4382 || info->hash->creator == abfd->xvec->alternative_target))
4383 {
4384 /* Common symbols less than or equal to -G nn bytes are automatically
4385 put into .sbss. */
4386 struct ppc_elf_link_hash_table *htab;
4387
4388 htab = ppc_elf_hash_table (info);
4389 if (htab->sbss == NULL)
4390 {
4391 flagword flags = SEC_IS_COMMON;
4392
4393 htab->sbss = bfd_make_section_anyway (abfd, ".sbss");
4394 if (htab->sbss == NULL
4395 || ! bfd_set_section_flags (abfd, htab->sbss, flags))
4396 return FALSE;
4397 }
4398
4399 *secp = htab->sbss;
4400 *valp = sym->st_size;
4401 }
4402
4403 return TRUE;
4404 }
4405 \f
4406 /* Finish up dynamic symbol handling. We set the contents of various
4407 dynamic sections here. */
4408
4409 static bfd_boolean
4410 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
4411 struct bfd_link_info *info,
4412 struct elf_link_hash_entry *h,
4413 Elf_Internal_Sym *sym)
4414 {
4415 struct ppc_elf_link_hash_table *htab;
4416
4417 #ifdef DEBUG
4418 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
4419 h->root.root.string);
4420 #endif
4421
4422 htab = ppc_elf_hash_table (info);
4423 BFD_ASSERT (htab->elf.dynobj != NULL);
4424
4425 if (h->plt.offset != (bfd_vma) -1)
4426 {
4427 Elf_Internal_Rela rela;
4428 bfd_byte *loc;
4429 bfd_vma reloc_index;
4430
4431 #ifdef DEBUG
4432 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
4433 #endif
4434
4435 /* This symbol has an entry in the procedure linkage table. Set
4436 it up. */
4437
4438 BFD_ASSERT (h->dynindx != -1);
4439 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
4440
4441 /* We don't need to fill in the .plt. The ppc dynamic linker
4442 will fill it in. */
4443
4444 /* Fill in the entry in the .rela.plt section. */
4445 rela.r_offset = (htab->plt->output_section->vma
4446 + htab->plt->output_offset
4447 + h->plt.offset);
4448 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
4449 rela.r_addend = 0;
4450
4451 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
4452 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
4453 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
4454 loc = (htab->relplt->contents
4455 + reloc_index * sizeof (Elf32_External_Rela));
4456 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4457
4458 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4459 {
4460 /* Mark the symbol as undefined, rather than as defined in
4461 the .plt section. Leave the value alone. */
4462 sym->st_shndx = SHN_UNDEF;
4463 /* If the symbol is weak, we do need to clear the value.
4464 Otherwise, the PLT entry would provide a definition for
4465 the symbol even if the symbol wasn't defined anywhere,
4466 and so the symbol would never be NULL. */
4467 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
4468 == 0)
4469 sym->st_value = 0;
4470 }
4471 }
4472
4473 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4474 {
4475 asection *s;
4476 Elf_Internal_Rela rela;
4477 bfd_byte *loc;
4478
4479 /* This symbols needs a copy reloc. Set it up. */
4480
4481 #ifdef DEBUG
4482 fprintf (stderr, ", copy");
4483 #endif
4484
4485 BFD_ASSERT (h->dynindx != -1);
4486
4487 if (h->size <= elf_gp_size (htab->elf.dynobj))
4488 s = htab->relsbss;
4489 else
4490 s = htab->relbss;
4491 BFD_ASSERT (s != NULL);
4492
4493 rela.r_offset = (h->root.u.def.value
4494 + h->root.u.def.section->output_section->vma
4495 + h->root.u.def.section->output_offset);
4496 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
4497 rela.r_addend = 0;
4498 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4499 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4500 }
4501
4502 #ifdef DEBUG
4503 fprintf (stderr, "\n");
4504 #endif
4505
4506 /* Mark some specially defined symbols as absolute. */
4507 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4508 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4509 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4510 sym->st_shndx = SHN_ABS;
4511
4512 return TRUE;
4513 }
4514 \f
4515 /* Finish up the dynamic sections. */
4516
4517 static bfd_boolean
4518 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
4519 struct bfd_link_info *info)
4520 {
4521 asection *sdyn;
4522 struct ppc_elf_link_hash_table *htab;
4523
4524 #ifdef DEBUG
4525 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
4526 #endif
4527
4528 htab = ppc_elf_hash_table (info);
4529 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
4530
4531 if (htab->elf.dynamic_sections_created)
4532 {
4533 Elf32_External_Dyn *dyncon, *dynconend;
4534
4535 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
4536
4537 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4538 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4539 for (; dyncon < dynconend; dyncon++)
4540 {
4541 Elf_Internal_Dyn dyn;
4542 asection *s;
4543
4544 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
4545
4546 switch (dyn.d_tag)
4547 {
4548 case DT_PLTGOT:
4549 s = htab->plt;
4550 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4551 break;
4552
4553 case DT_PLTRELSZ:
4554 dyn.d_un.d_val = htab->relplt->_raw_size;
4555 break;
4556
4557 case DT_JMPREL:
4558 s = htab->relplt;
4559 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4560 break;
4561
4562 default:
4563 continue;
4564 }
4565
4566 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4567 }
4568 }
4569
4570 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
4571 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
4572 if (htab->got)
4573 {
4574 unsigned char *contents = htab->got->contents;
4575 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
4576
4577 if (sdyn == NULL)
4578 bfd_put_32 (output_bfd, 0, contents + 4);
4579 else
4580 bfd_put_32 (output_bfd,
4581 sdyn->output_section->vma + sdyn->output_offset,
4582 contents + 4);
4583
4584 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
4585 }
4586
4587 return TRUE;
4588 }
4589 \f
4590 /* The RELOCATE_SECTION function is called by the ELF backend linker
4591 to handle the relocations for a section.
4592
4593 The relocs are always passed as Rela structures; if the section
4594 actually uses Rel structures, the r_addend field will always be
4595 zero.
4596
4597 This function is responsible for adjust the section contents as
4598 necessary, and (if using Rela relocs and generating a
4599 relocatable output file) adjusting the reloc addend as
4600 necessary.
4601
4602 This function does not have to worry about setting the reloc
4603 address or the reloc symbol index.
4604
4605 LOCAL_SYMS is a pointer to the swapped in local symbols.
4606
4607 LOCAL_SECTIONS is an array giving the section in the input file
4608 corresponding to the st_shndx field of each local symbol.
4609
4610 The global hash table entry for the global symbols can be found
4611 via elf_sym_hashes (input_bfd).
4612
4613 When generating relocatable output, this function must handle
4614 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4615 going to be the section symbol corresponding to the output
4616 section, which means that the addend must be adjusted
4617 accordingly. */
4618
4619 static bfd_boolean
4620 ppc_elf_relocate_section (bfd *output_bfd,
4621 struct bfd_link_info *info,
4622 bfd *input_bfd,
4623 asection *input_section,
4624 bfd_byte *contents,
4625 Elf_Internal_Rela *relocs,
4626 Elf_Internal_Sym *local_syms,
4627 asection **local_sections)
4628 {
4629 Elf_Internal_Shdr *symtab_hdr;
4630 struct elf_link_hash_entry **sym_hashes;
4631 struct ppc_elf_link_hash_table *htab;
4632 Elf_Internal_Rela *rel;
4633 Elf_Internal_Rela *relend;
4634 Elf_Internal_Rela outrel;
4635 bfd_byte *loc;
4636 asection *sreloc = NULL;
4637 bfd_vma *local_got_offsets;
4638 bfd_boolean ret = TRUE;
4639
4640 #ifdef DEBUG
4641 fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, "
4642 "%ld relocations%s\n",
4643 bfd_archive_filename (input_bfd),
4644 bfd_section_name(input_bfd, input_section),
4645 (long) input_section->reloc_count,
4646 (info->relocatable) ? " (relocatable)" : "");
4647 #endif
4648
4649 if (info->relocatable)
4650 return TRUE;
4651
4652 /* Initialize howto table if not already done. */
4653 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4654 ppc_elf_howto_init ();
4655
4656 htab = ppc_elf_hash_table (info);
4657 local_got_offsets = elf_local_got_offsets (input_bfd);
4658 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4659 sym_hashes = elf_sym_hashes (input_bfd);
4660 rel = relocs;
4661 relend = relocs + input_section->reloc_count;
4662 for (; rel < relend; rel++)
4663 {
4664 enum elf_ppc_reloc_type r_type;
4665 bfd_vma addend;
4666 bfd_reloc_status_type r;
4667 Elf_Internal_Sym *sym;
4668 asection *sec;
4669 struct elf_link_hash_entry *h;
4670 const char *sym_name;
4671 reloc_howto_type *howto;
4672 unsigned long r_symndx;
4673 bfd_vma relocation;
4674 bfd_vma branch_bit, insn, from;
4675 bfd_boolean unresolved_reloc;
4676 bfd_boolean warned;
4677 unsigned int tls_type, tls_mask, tls_gd;
4678
4679 r_type = ELF32_R_TYPE (rel->r_info);
4680 sym = NULL;
4681 sec = NULL;
4682 h = NULL;
4683 unresolved_reloc = FALSE;
4684 warned = FALSE;
4685 r_symndx = ELF32_R_SYM (rel->r_info);
4686
4687 if (r_symndx < symtab_hdr->sh_info)
4688 {
4689 sym = local_syms + r_symndx;
4690 sec = local_sections[r_symndx];
4691 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
4692
4693 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4694 }
4695 else
4696 {
4697 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
4698 symtab_hdr, relocation, sec,
4699 unresolved_reloc, info,
4700 warned);
4701
4702 sym_name = h->root.root.string;
4703 }
4704
4705 /* TLS optimizations. Replace instruction sequences and relocs
4706 based on information we collected in tls_optimize. We edit
4707 RELOCS so that --emit-relocs will output something sensible
4708 for the final instruction stream. */
4709 tls_mask = 0;
4710 tls_gd = 0;
4711 if (IS_PPC_TLS_RELOC (r_type))
4712 {
4713 if (h != NULL)
4714 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4715 else if (local_got_offsets != NULL)
4716 {
4717 char *lgot_masks;
4718 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4719 tls_mask = lgot_masks[r_symndx];
4720 }
4721 }
4722
4723 /* Ensure reloc mapping code below stays sane. */
4724 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4725 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4726 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4727 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4728 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4729 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4730 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4731 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4732 abort ();
4733 switch (r_type)
4734 {
4735 default:
4736 break;
4737
4738 case R_PPC_GOT_TPREL16:
4739 case R_PPC_GOT_TPREL16_LO:
4740 if (tls_mask != 0
4741 && (tls_mask & TLS_TPREL) == 0)
4742 {
4743 bfd_vma insn;
4744 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4745 insn &= 31 << 21;
4746 insn |= 0x3c020000; /* addis 0,2,0 */
4747 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4748 r_type = R_PPC_TPREL16_HA;
4749 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4750 }
4751 break;
4752
4753 case R_PPC_TLS:
4754 if (tls_mask != 0
4755 && (tls_mask & TLS_TPREL) == 0)
4756 {
4757 bfd_vma insn, rtra;
4758 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4759 if ((insn & ((31 << 26) | (31 << 11)))
4760 == ((31 << 26) | (2 << 11)))
4761 rtra = insn & ((1 << 26) - (1 << 16));
4762 else if ((insn & ((31 << 26) | (31 << 16)))
4763 == ((31 << 26) | (2 << 16)))
4764 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4765 else
4766 abort ();
4767 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4768 /* add -> addi. */
4769 insn = 14 << 26;
4770 else if ((insn & (31 << 1)) == 23 << 1
4771 && ((insn & (31 << 6)) < 14 << 6
4772 || ((insn & (31 << 6)) >= 16 << 6
4773 && (insn & (31 << 6)) < 24 << 6)))
4774 /* load and store indexed -> dform. */
4775 insn = (32 | ((insn >> 6) & 31)) << 26;
4776 else if ((insn & (31 << 1)) == 21 << 1
4777 && (insn & (0x1a << 6)) == 0)
4778 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4779 insn = (((58 | ((insn >> 6) & 4)) << 26)
4780 | ((insn >> 6) & 1));
4781 else if ((insn & (31 << 1)) == 21 << 1
4782 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4783 /* lwax -> lwa. */
4784 insn = (58 << 26) | 2;
4785 else
4786 abort ();
4787 insn |= rtra;
4788 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4789 r_type = R_PPC_TPREL16_LO;
4790 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4791 /* Was PPC_TLS which sits on insn boundary, now
4792 PPC_TPREL16_LO which is at insn+2. */
4793 rel->r_offset += 2;
4794 }
4795 break;
4796
4797 case R_PPC_GOT_TLSGD16_HI:
4798 case R_PPC_GOT_TLSGD16_HA:
4799 tls_gd = TLS_TPRELGD;
4800 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4801 goto tls_gdld_hi;
4802 break;
4803
4804 case R_PPC_GOT_TLSLD16_HI:
4805 case R_PPC_GOT_TLSLD16_HA:
4806 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4807 {
4808 tls_gdld_hi:
4809 if ((tls_mask & tls_gd) != 0)
4810 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4811 + R_PPC_GOT_TPREL16);
4812 else
4813 {
4814 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4815 rel->r_offset -= 2;
4816 r_type = R_PPC_NONE;
4817 }
4818 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4819 }
4820 break;
4821
4822 case R_PPC_GOT_TLSGD16:
4823 case R_PPC_GOT_TLSGD16_LO:
4824 tls_gd = TLS_TPRELGD;
4825 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4826 goto tls_get_addr_check;
4827 break;
4828
4829 case R_PPC_GOT_TLSLD16:
4830 case R_PPC_GOT_TLSLD16_LO:
4831 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4832 {
4833 tls_get_addr_check:
4834 if (rel + 1 < relend)
4835 {
4836 enum elf_ppc_reloc_type r_type2;
4837 unsigned long r_symndx2;
4838 struct elf_link_hash_entry *h2;
4839 bfd_vma insn1, insn2;
4840 bfd_vma offset;
4841
4842 /* The next instruction should be a call to
4843 __tls_get_addr. Peek at the reloc to be sure. */
4844 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4845 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4846 if (r_symndx2 < symtab_hdr->sh_info
4847 || (r_type2 != R_PPC_REL14
4848 && r_type2 != R_PPC_REL14_BRTAKEN
4849 && r_type2 != R_PPC_REL14_BRNTAKEN
4850 && r_type2 != R_PPC_REL24
4851 && r_type2 != R_PPC_PLTREL24))
4852 break;
4853
4854 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4855 while (h2->root.type == bfd_link_hash_indirect
4856 || h2->root.type == bfd_link_hash_warning)
4857 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
4858 if (h2 == NULL || h2 != htab->tls_get_addr)
4859 break;
4860
4861 /* OK, it checks out. Replace the call. */
4862 offset = rel[1].r_offset;
4863 insn1 = bfd_get_32 (output_bfd,
4864 contents + rel->r_offset - 2);
4865 if ((tls_mask & tls_gd) != 0)
4866 {
4867 /* IE */
4868 insn1 &= (1 << 26) - 1;
4869 insn1 |= 32 << 26; /* lwz */
4870 insn2 = 0x7c631214; /* add 3,3,2 */
4871 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
4872 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4873 + R_PPC_GOT_TPREL16);
4874 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4875 }
4876 else
4877 {
4878 /* LE */
4879 insn1 = 0x3c620000; /* addis 3,2,0 */
4880 insn2 = 0x38630000; /* addi 3,3,0 */
4881 if (tls_gd == 0)
4882 {
4883 /* Was an LD reloc. */
4884 r_symndx = 0;
4885 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4886 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4887 }
4888 r_type = R_PPC_TPREL16_HA;
4889 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4890 rel[1].r_info = ELF32_R_INFO (r_symndx,
4891 R_PPC_TPREL16_LO);
4892 rel[1].r_offset += 2;
4893 }
4894 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
4895 bfd_put_32 (output_bfd, insn2, contents + offset);
4896 if (tls_gd == 0)
4897 {
4898 /* We changed the symbol on an LD reloc. Start over
4899 in order to get h, sym, sec etc. right. */
4900 rel--;
4901 continue;
4902 }
4903 }
4904 }
4905 break;
4906 }
4907
4908 /* Handle other relocations that tweak non-addend part of insn. */
4909 branch_bit = 0;
4910 switch (r_type)
4911 {
4912 default:
4913 break;
4914
4915 /* Branch taken prediction relocations. */
4916 case R_PPC_ADDR14_BRTAKEN:
4917 case R_PPC_REL14_BRTAKEN:
4918 branch_bit = BRANCH_PREDICT_BIT;
4919 /* Fall thru */
4920
4921 /* Branch not taken predicition relocations. */
4922 case R_PPC_ADDR14_BRNTAKEN:
4923 case R_PPC_REL14_BRNTAKEN:
4924 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4925 insn &= ~BRANCH_PREDICT_BIT;
4926 insn |= branch_bit;
4927
4928 from = (rel->r_offset
4929 + input_section->output_offset
4930 + input_section->output_section->vma);
4931
4932 /* Invert 'y' bit if not the default. */
4933 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
4934 insn ^= BRANCH_PREDICT_BIT;
4935
4936 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4937 break;
4938 }
4939
4940 addend = rel->r_addend;
4941 tls_type = 0;
4942 howto = NULL;
4943 if (r_type < R_PPC_max)
4944 howto = ppc_elf_howto_table[r_type];
4945 switch (r_type)
4946 {
4947 default:
4948 (*_bfd_error_handler)
4949 (_("%s: unknown relocation type %d for symbol %s"),
4950 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
4951
4952 bfd_set_error (bfd_error_bad_value);
4953 ret = FALSE;
4954 continue;
4955
4956 case R_PPC_NONE:
4957 case R_PPC_TLS:
4958 case R_PPC_EMB_MRKREF:
4959 case R_PPC_GNU_VTINHERIT:
4960 case R_PPC_GNU_VTENTRY:
4961 continue;
4962
4963 /* GOT16 relocations. Like an ADDR16 using the symbol's
4964 address in the GOT as relocation value instead of the
4965 symbol's value itself. Also, create a GOT entry for the
4966 symbol and put the symbol value there. */
4967 case R_PPC_GOT_TLSGD16:
4968 case R_PPC_GOT_TLSGD16_LO:
4969 case R_PPC_GOT_TLSGD16_HI:
4970 case R_PPC_GOT_TLSGD16_HA:
4971 tls_type = TLS_TLS | TLS_GD;
4972 goto dogot;
4973
4974 case R_PPC_GOT_TLSLD16:
4975 case R_PPC_GOT_TLSLD16_LO:
4976 case R_PPC_GOT_TLSLD16_HI:
4977 case R_PPC_GOT_TLSLD16_HA:
4978 tls_type = TLS_TLS | TLS_LD;
4979 goto dogot;
4980
4981 case R_PPC_GOT_TPREL16:
4982 case R_PPC_GOT_TPREL16_LO:
4983 case R_PPC_GOT_TPREL16_HI:
4984 case R_PPC_GOT_TPREL16_HA:
4985 tls_type = TLS_TLS | TLS_TPREL;
4986 goto dogot;
4987
4988 case R_PPC_GOT_DTPREL16:
4989 case R_PPC_GOT_DTPREL16_LO:
4990 case R_PPC_GOT_DTPREL16_HI:
4991 case R_PPC_GOT_DTPREL16_HA:
4992 tls_type = TLS_TLS | TLS_DTPREL;
4993 goto dogot;
4994
4995 case R_PPC_GOT16:
4996 case R_PPC_GOT16_LO:
4997 case R_PPC_GOT16_HI:
4998 case R_PPC_GOT16_HA:
4999 dogot:
5000 {
5001 /* Relocation is to the entry for this symbol in the global
5002 offset table. */
5003 bfd_vma off;
5004 bfd_vma *offp;
5005 unsigned long indx;
5006
5007 if (htab->got == NULL)
5008 abort ();
5009
5010 indx = 0;
5011 if (tls_type == (TLS_TLS | TLS_LD)
5012 && (h == NULL
5013 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
5014 offp = &htab->tlsld_got.offset;
5015 else if (h != NULL)
5016 {
5017 bfd_boolean dyn;
5018 dyn = htab->elf.dynamic_sections_created;
5019 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5020 || (info->shared
5021 && SYMBOL_REFERENCES_LOCAL (info, h)))
5022 /* This is actually a static link, or it is a
5023 -Bsymbolic link and the symbol is defined
5024 locally, or the symbol was forced to be local
5025 because of a version file. */
5026 ;
5027 else
5028 {
5029 indx = h->dynindx;
5030 unresolved_reloc = FALSE;
5031 }
5032 offp = &h->got.offset;
5033 }
5034 else
5035 {
5036 if (local_got_offsets == NULL)
5037 abort ();
5038 offp = &local_got_offsets[r_symndx];
5039 }
5040
5041 /* The offset must always be a multiple of 4. We use the
5042 least significant bit to record whether we have already
5043 processed this entry. */
5044 off = *offp;
5045 if ((off & 1) != 0)
5046 off &= ~1;
5047 else
5048 {
5049 unsigned int tls_m = (tls_mask
5050 & (TLS_LD | TLS_GD | TLS_DTPREL
5051 | TLS_TPREL | TLS_TPRELGD));
5052
5053 if (offp == &htab->tlsld_got.offset)
5054 tls_m = TLS_LD;
5055 else if (h == NULL
5056 || !(h->elf_link_hash_flags
5057 & ELF_LINK_HASH_DEF_DYNAMIC))
5058 tls_m &= ~TLS_LD;
5059
5060 /* We might have multiple got entries for this sym.
5061 Initialize them all. */
5062 do
5063 {
5064 int tls_ty = 0;
5065
5066 if ((tls_m & TLS_LD) != 0)
5067 {
5068 tls_ty = TLS_TLS | TLS_LD;
5069 tls_m &= ~TLS_LD;
5070 }
5071 else if ((tls_m & TLS_GD) != 0)
5072 {
5073 tls_ty = TLS_TLS | TLS_GD;
5074 tls_m &= ~TLS_GD;
5075 }
5076 else if ((tls_m & TLS_DTPREL) != 0)
5077 {
5078 tls_ty = TLS_TLS | TLS_DTPREL;
5079 tls_m &= ~TLS_DTPREL;
5080 }
5081 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5082 {
5083 tls_ty = TLS_TLS | TLS_TPREL;
5084 tls_m = 0;
5085 }
5086
5087 /* Generate relocs for the dynamic linker. */
5088 if ((info->shared || indx != 0)
5089 && (h == NULL
5090 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5091 || h->root.type != bfd_link_hash_undefweak))
5092 {
5093 outrel.r_offset = (htab->got->output_section->vma
5094 + htab->got->output_offset
5095 + off);
5096 outrel.r_addend = 0;
5097 if (tls_ty & (TLS_LD | TLS_GD))
5098 {
5099 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5100 if (tls_ty == (TLS_TLS | TLS_GD))
5101 {
5102 loc = htab->relgot->contents;
5103 loc += (htab->relgot->reloc_count++
5104 * sizeof (Elf32_External_Rela));
5105 bfd_elf32_swap_reloca_out (output_bfd,
5106 &outrel, loc);
5107 outrel.r_offset += 4;
5108 outrel.r_info
5109 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5110 }
5111 }
5112 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5113 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5114 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5115 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5116 else if (indx == 0)
5117 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5118 else
5119 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5120 if (indx == 0)
5121 {
5122 outrel.r_addend += relocation;
5123 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5124 outrel.r_addend -= htab->elf.tls_sec->vma;
5125 }
5126 loc = htab->relgot->contents;
5127 loc += (htab->relgot->reloc_count++
5128 * sizeof (Elf32_External_Rela));
5129 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5130 }
5131
5132 /* Init the .got section contents if we're not
5133 emitting a reloc. */
5134 else
5135 {
5136 bfd_vma value = relocation;
5137
5138 if (tls_ty == (TLS_TLS | TLS_LD))
5139 value = 1;
5140 else if (tls_ty != 0)
5141 {
5142 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5143 if (tls_ty == (TLS_TLS | TLS_TPREL))
5144 value += DTP_OFFSET - TP_OFFSET;
5145
5146 if (tls_ty == (TLS_TLS | TLS_GD))
5147 {
5148 bfd_put_32 (output_bfd, value,
5149 htab->got->contents + off + 4);
5150 value = 1;
5151 }
5152 }
5153 bfd_put_32 (output_bfd, value,
5154 htab->got->contents + off);
5155 }
5156
5157 off += 4;
5158 if (tls_ty & (TLS_LD | TLS_GD))
5159 off += 4;
5160 }
5161 while (tls_m != 0);
5162
5163 off = *offp;
5164 *offp = off | 1;
5165 }
5166
5167 if (off >= (bfd_vma) -2)
5168 abort ();
5169
5170 if ((tls_type & TLS_TLS) != 0)
5171 {
5172 if (tls_type != (TLS_TLS | TLS_LD))
5173 {
5174 if ((tls_mask & TLS_LD) != 0
5175 && !(h == NULL
5176 || !(h->elf_link_hash_flags
5177 & ELF_LINK_HASH_DEF_DYNAMIC)))
5178 off += 8;
5179 if (tls_type != (TLS_TLS | TLS_GD))
5180 {
5181 if ((tls_mask & TLS_GD) != 0)
5182 off += 8;
5183 if (tls_type != (TLS_TLS | TLS_DTPREL))
5184 {
5185 if ((tls_mask & TLS_DTPREL) != 0)
5186 off += 4;
5187 }
5188 }
5189 }
5190 }
5191
5192 relocation = htab->got->output_offset + off - 4;
5193
5194 /* Addends on got relocations don't make much sense.
5195 x+off@got is actually x@got+off, and since the got is
5196 generated by a hash table traversal, the value in the
5197 got at entry m+n bears little relation to the entry m. */
5198 if (addend != 0)
5199 (*_bfd_error_handler)
5200 (_("%s(%s+0x%lx): non-zero addend on %s reloc against `%s'"),
5201 bfd_archive_filename (input_bfd),
5202 bfd_get_section_name (input_bfd, input_section),
5203 (long) rel->r_offset,
5204 howto->name,
5205 sym_name);
5206 }
5207 break;
5208
5209 /* Relocations that need no special processing. */
5210 case R_PPC_LOCAL24PC:
5211 /* It makes no sense to point a local relocation
5212 at a symbol not in this object. */
5213 if (unresolved_reloc)
5214 {
5215 if (! (*info->callbacks->undefined_symbol) (info,
5216 h->root.root.string,
5217 input_bfd,
5218 input_section,
5219 rel->r_offset,
5220 TRUE))
5221 return FALSE;
5222 continue;
5223 }
5224 break;
5225
5226 case R_PPC_DTPREL16:
5227 case R_PPC_DTPREL16_LO:
5228 case R_PPC_DTPREL16_HI:
5229 case R_PPC_DTPREL16_HA:
5230 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5231 break;
5232
5233 /* Relocations that may need to be propagated if this is a shared
5234 object. */
5235 case R_PPC_TPREL16:
5236 case R_PPC_TPREL16_LO:
5237 case R_PPC_TPREL16_HI:
5238 case R_PPC_TPREL16_HA:
5239 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5240 /* The TPREL16 relocs shouldn't really be used in shared
5241 libs as they will result in DT_TEXTREL being set, but
5242 support them anyway. */
5243 goto dodyn;
5244
5245 case R_PPC_TPREL32:
5246 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5247 goto dodyn;
5248
5249 case R_PPC_DTPREL32:
5250 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5251 goto dodyn;
5252
5253 case R_PPC_DTPMOD32:
5254 relocation = 1;
5255 addend = 0;
5256 goto dodyn;
5257
5258 case R_PPC_REL24:
5259 case R_PPC_REL32:
5260 case R_PPC_REL14:
5261 case R_PPC_REL14_BRTAKEN:
5262 case R_PPC_REL14_BRNTAKEN:
5263 /* If these relocations are not to a named symbol, they can be
5264 handled right here, no need to bother the dynamic linker. */
5265 if (SYMBOL_REFERENCES_LOCAL (info, h)
5266 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5267 break;
5268 /* fall through */
5269
5270 /* Relocations that always need to be propagated if this is a shared
5271 object. */
5272 case R_PPC_ADDR32:
5273 case R_PPC_ADDR24:
5274 case R_PPC_ADDR16:
5275 case R_PPC_ADDR16_LO:
5276 case R_PPC_ADDR16_HI:
5277 case R_PPC_ADDR16_HA:
5278 case R_PPC_ADDR14:
5279 case R_PPC_ADDR14_BRTAKEN:
5280 case R_PPC_ADDR14_BRNTAKEN:
5281 case R_PPC_UADDR32:
5282 case R_PPC_UADDR16:
5283 /* r_symndx will be zero only for relocs against symbols
5284 from removed linkonce sections, or sections discarded by
5285 a linker script. */
5286 dodyn:
5287 if (r_symndx == 0)
5288 break;
5289 /* Fall thru. */
5290
5291 if ((info->shared
5292 && (h == NULL
5293 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5294 || h->root.type != bfd_link_hash_undefweak)
5295 && (MUST_BE_DYN_RELOC (r_type)
5296 || !SYMBOL_CALLS_LOCAL (info, h)))
5297 || (ELIMINATE_COPY_RELOCS
5298 && !info->shared
5299 && (input_section->flags & SEC_ALLOC) != 0
5300 && h != NULL
5301 && h->dynindx != -1
5302 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5303 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5304 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
5305 {
5306 int skip;
5307
5308 #ifdef DEBUG
5309 fprintf (stderr, "ppc_elf_relocate_section needs to "
5310 "create relocation for %s\n",
5311 (h && h->root.root.string
5312 ? h->root.root.string : "<unknown>"));
5313 #endif
5314
5315 /* When generating a shared object, these relocations
5316 are copied into the output file to be resolved at run
5317 time. */
5318 if (sreloc == NULL)
5319 {
5320 const char *name;
5321
5322 name = (bfd_elf_string_from_elf_section
5323 (input_bfd,
5324 elf_elfheader (input_bfd)->e_shstrndx,
5325 elf_section_data (input_section)->rel_hdr.sh_name));
5326 if (name == NULL)
5327 return FALSE;
5328
5329 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5330 && strcmp (bfd_get_section_name (input_bfd,
5331 input_section),
5332 name + 5) == 0);
5333
5334 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5335 BFD_ASSERT (sreloc != NULL);
5336 }
5337
5338 skip = 0;
5339
5340 outrel.r_offset =
5341 _bfd_elf_section_offset (output_bfd, info, input_section,
5342 rel->r_offset);
5343 if (outrel.r_offset == (bfd_vma) -1
5344 || outrel.r_offset == (bfd_vma) -2)
5345 skip = (int) outrel.r_offset;
5346 outrel.r_offset += (input_section->output_section->vma
5347 + input_section->output_offset);
5348
5349 if (skip)
5350 memset (&outrel, 0, sizeof outrel);
5351 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5352 {
5353 unresolved_reloc = FALSE;
5354 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5355 outrel.r_addend = rel->r_addend;
5356 }
5357 else
5358 {
5359 outrel.r_addend = relocation + rel->r_addend;
5360
5361 if (r_type == R_PPC_ADDR32)
5362 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5363 else
5364 {
5365 long indx;
5366
5367 if (bfd_is_abs_section (sec))
5368 indx = 0;
5369 else if (sec == NULL || sec->owner == NULL)
5370 {
5371 bfd_set_error (bfd_error_bad_value);
5372 return FALSE;
5373 }
5374 else
5375 {
5376 asection *osec;
5377
5378 /* We are turning this relocation into one
5379 against a section symbol. It would be
5380 proper to subtract the symbol's value,
5381 osec->vma, from the emitted reloc addend,
5382 but ld.so expects buggy relocs. */
5383 osec = sec->output_section;
5384 indx = elf_section_data (osec)->dynindx;
5385 BFD_ASSERT (indx > 0);
5386 #ifdef DEBUG
5387 if (indx <= 0)
5388 printf ("indx=%d section=%s flags=%08x name=%s\n",
5389 indx, osec->name, osec->flags,
5390 h->root.root.string);
5391 #endif
5392 }
5393
5394 outrel.r_info = ELF32_R_INFO (indx, r_type);
5395 }
5396 }
5397
5398 loc = sreloc->contents;
5399 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5400 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5401
5402 if (skip == -1)
5403 continue;
5404
5405 /* This reloc will be computed at runtime. We clear the memory
5406 so that it contains predictable value. */
5407 if (! skip
5408 && ((input_section->flags & SEC_ALLOC) != 0
5409 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5410 {
5411 relocation = howto->pc_relative ? outrel.r_offset : 0;
5412 addend = 0;
5413 break;
5414 }
5415 }
5416 break;
5417
5418 case R_PPC_RELAX32PC:
5419 relocation -= (input_section->output_section->vma
5420 + input_section->output_offset
5421 + rel->r_offset - 4);
5422 /* Fall thru */
5423 case R_PPC_RELAX32:
5424 {
5425 unsigned long t0;
5426 unsigned long t1;
5427
5428 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5429 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5430
5431 /* We're clearing the bits for R_PPC_ADDR16_HA
5432 and R_PPC_ADDR16_LO here. */
5433 t0 &= ~0xffff;
5434 t1 &= ~0xffff;
5435
5436 /* t0 is HA, t1 is LO */
5437 relocation += addend;
5438 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5439 t1 |= relocation & 0xffff;
5440
5441 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5442 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5443 }
5444 continue;
5445
5446 /* Indirect .sdata relocation. */
5447 case R_PPC_EMB_SDAI16:
5448 BFD_ASSERT (htab->sdata != NULL);
5449 relocation
5450 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5451 htab->sdata, h, relocation,
5452 rel, R_PPC_RELATIVE);
5453 break;
5454
5455 /* Indirect .sdata2 relocation. */
5456 case R_PPC_EMB_SDA2I16:
5457 BFD_ASSERT (htab->sdata2 != NULL);
5458 relocation
5459 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5460 htab->sdata2, h, relocation,
5461 rel, R_PPC_RELATIVE);
5462 break;
5463
5464 /* Handle the TOC16 reloc. We want to use the offset within the .got
5465 section, not the actual VMA. This is appropriate when generating
5466 an embedded ELF object, for which the .got section acts like the
5467 AIX .toc section. */
5468 case R_PPC_TOC16: /* phony GOT16 relocations */
5469 BFD_ASSERT (sec != NULL);
5470 BFD_ASSERT (bfd_is_und_section (sec)
5471 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
5472 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
5473
5474 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
5475 break;
5476
5477 case R_PPC_PLTREL24:
5478 /* Relocation is to the entry for this symbol in the
5479 procedure linkage table. */
5480 BFD_ASSERT (h != NULL);
5481
5482 if (h->plt.offset == (bfd_vma) -1
5483 || htab->plt == NULL)
5484 {
5485 /* We didn't make a PLT entry for this symbol. This
5486 happens when statically linking PIC code, or when
5487 using -Bsymbolic. */
5488 break;
5489 }
5490
5491 unresolved_reloc = FALSE;
5492 relocation = (htab->plt->output_section->vma
5493 + htab->plt->output_offset
5494 + h->plt.offset);
5495 break;
5496
5497 /* Relocate against _SDA_BASE_. */
5498 case R_PPC_SDAREL16:
5499 {
5500 const char *name;
5501 const struct elf_link_hash_entry *sh;
5502
5503 BFD_ASSERT (sec != NULL);
5504 name = bfd_get_section_name (abfd, sec->output_section);
5505 if (! ((strncmp (name, ".sdata", 6) == 0
5506 && (name[6] == 0 || name[6] == '.'))
5507 || (strncmp (name, ".sbss", 5) == 0
5508 && (name[5] == 0 || name[5] == '.'))))
5509 {
5510 (*_bfd_error_handler)
5511 (_("%s: the target (%s) of a %s relocation is "
5512 "in the wrong output section (%s)"),
5513 bfd_archive_filename (input_bfd),
5514 sym_name,
5515 howto->name,
5516 name);
5517 }
5518 sh = htab->sdata->sym_hash;
5519 addend -= (sh->root.u.def.value
5520 + sh->root.u.def.section->output_section->vma
5521 + sh->root.u.def.section->output_offset);
5522 }
5523 break;
5524
5525 /* Relocate against _SDA2_BASE_. */
5526 case R_PPC_EMB_SDA2REL:
5527 {
5528 const char *name;
5529 const struct elf_link_hash_entry *sh;
5530
5531 BFD_ASSERT (sec != NULL);
5532 name = bfd_get_section_name (abfd, sec->output_section);
5533 if (! (strncmp (name, ".sdata2", 7) == 0
5534 || strncmp (name, ".sbss2", 6) == 0))
5535 {
5536 (*_bfd_error_handler)
5537 (_("%s: the target (%s) of a %s relocation is "
5538 "in the wrong output section (%s)"),
5539 bfd_archive_filename (input_bfd),
5540 sym_name,
5541 howto->name,
5542 name);
5543
5544 bfd_set_error (bfd_error_bad_value);
5545 ret = FALSE;
5546 continue;
5547 }
5548 sh = htab->sdata2->sym_hash;
5549 addend -= (sh->root.u.def.value
5550 + sh->root.u.def.section->output_section->vma
5551 + sh->root.u.def.section->output_offset);
5552 }
5553 break;
5554
5555 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
5556 case R_PPC_EMB_SDA21:
5557 case R_PPC_EMB_RELSDA:
5558 {
5559 const char *name;
5560 const struct elf_link_hash_entry *sh;
5561 int reg;
5562
5563 BFD_ASSERT (sec != NULL);
5564 name = bfd_get_section_name (abfd, sec->output_section);
5565 if (((strncmp (name, ".sdata", 6) == 0
5566 && (name[6] == 0 || name[6] == '.'))
5567 || (strncmp (name, ".sbss", 5) == 0
5568 && (name[5] == 0 || name[5] == '.'))))
5569 {
5570 reg = 13;
5571 sh = htab->sdata->sym_hash;
5572 addend -= (sh->root.u.def.value
5573 + sh->root.u.def.section->output_section->vma
5574 + sh->root.u.def.section->output_offset);
5575 }
5576
5577 else if (strncmp (name, ".sdata2", 7) == 0
5578 || strncmp (name, ".sbss2", 6) == 0)
5579 {
5580 reg = 2;
5581 sh = htab->sdata2->sym_hash;
5582 addend -= (sh->root.u.def.value
5583 + sh->root.u.def.section->output_section->vma
5584 + sh->root.u.def.section->output_offset);
5585 }
5586
5587 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5588 || strcmp (name, ".PPC.EMB.sbss0") == 0)
5589 {
5590 reg = 0;
5591 }
5592
5593 else
5594 {
5595 (*_bfd_error_handler)
5596 (_("%s: the target (%s) of a %s relocation is "
5597 "in the wrong output section (%s)"),
5598 bfd_archive_filename (input_bfd),
5599 sym_name,
5600 howto->name,
5601 name);
5602
5603 bfd_set_error (bfd_error_bad_value);
5604 ret = FALSE;
5605 continue;
5606 }
5607
5608 if (r_type == R_PPC_EMB_SDA21)
5609 { /* fill in register field */
5610 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5611 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
5612 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5613 }
5614 }
5615 break;
5616
5617 /* Relocate against the beginning of the section. */
5618 case R_PPC_SECTOFF:
5619 case R_PPC_SECTOFF_LO:
5620 case R_PPC_SECTOFF_HI:
5621 case R_PPC_SECTOFF_HA:
5622 BFD_ASSERT (sec != NULL);
5623 addend -= sec->output_section->vma;
5624 break;
5625
5626 /* Negative relocations. */
5627 case R_PPC_EMB_NADDR32:
5628 case R_PPC_EMB_NADDR16:
5629 case R_PPC_EMB_NADDR16_LO:
5630 case R_PPC_EMB_NADDR16_HI:
5631 case R_PPC_EMB_NADDR16_HA:
5632 addend -= 2 * relocation;
5633 break;
5634
5635 case R_PPC_COPY:
5636 case R_PPC_GLOB_DAT:
5637 case R_PPC_JMP_SLOT:
5638 case R_PPC_RELATIVE:
5639 case R_PPC_PLT32:
5640 case R_PPC_PLTREL32:
5641 case R_PPC_PLT16_LO:
5642 case R_PPC_PLT16_HI:
5643 case R_PPC_PLT16_HA:
5644 case R_PPC_ADDR30:
5645 case R_PPC_EMB_RELSEC16:
5646 case R_PPC_EMB_RELST_LO:
5647 case R_PPC_EMB_RELST_HI:
5648 case R_PPC_EMB_RELST_HA:
5649 case R_PPC_EMB_BIT_FLD:
5650 (*_bfd_error_handler)
5651 (_("%s: relocation %s is not yet supported for symbol %s."),
5652 bfd_archive_filename (input_bfd),
5653 howto->name,
5654 sym_name);
5655
5656 bfd_set_error (bfd_error_invalid_operation);
5657 ret = FALSE;
5658 continue;
5659 }
5660
5661 /* Do any further special processing. */
5662 switch (r_type)
5663 {
5664 default:
5665 break;
5666
5667 case R_PPC_ADDR16_HA:
5668 case R_PPC_GOT16_HA:
5669 case R_PPC_PLT16_HA:
5670 case R_PPC_SECTOFF_HA:
5671 case R_PPC_TPREL16_HA:
5672 case R_PPC_DTPREL16_HA:
5673 case R_PPC_GOT_TLSGD16_HA:
5674 case R_PPC_GOT_TLSLD16_HA:
5675 case R_PPC_GOT_TPREL16_HA:
5676 case R_PPC_GOT_DTPREL16_HA:
5677 case R_PPC_EMB_NADDR16_HA:
5678 case R_PPC_EMB_RELST_HA:
5679 /* It's just possible that this symbol is a weak symbol
5680 that's not actually defined anywhere. In that case,
5681 'sec' would be NULL, and we should leave the symbol
5682 alone (it will be set to zero elsewhere in the link). */
5683 if (sec != NULL)
5684 /* Add 0x10000 if sign bit in 0:15 is set.
5685 Bits 0:15 are not used. */
5686 addend += 0x8000;
5687 break;
5688 }
5689
5690 #ifdef DEBUG
5691 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5692 "offset = %ld, addend = %ld\n",
5693 howto->name,
5694 (int) r_type,
5695 sym_name,
5696 r_symndx,
5697 (long) rel->r_offset,
5698 (long) addend);
5699 #endif
5700
5701 if (unresolved_reloc
5702 && !((input_section->flags & SEC_DEBUGGING) != 0
5703 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
5704 {
5705 (*_bfd_error_handler)
5706 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
5707 bfd_archive_filename (input_bfd),
5708 bfd_get_section_name (input_bfd, input_section),
5709 (long) rel->r_offset,
5710 howto->name,
5711 sym_name);
5712 ret = FALSE;
5713 }
5714
5715 r = _bfd_final_link_relocate (howto,
5716 input_bfd,
5717 input_section,
5718 contents,
5719 rel->r_offset,
5720 relocation,
5721 addend);
5722
5723 if (r != bfd_reloc_ok)
5724 {
5725 if (sym_name == NULL)
5726 sym_name = "(null)";
5727 if (r == bfd_reloc_overflow)
5728 {
5729 if (warned)
5730 continue;
5731 if (h != NULL
5732 && h->root.type == bfd_link_hash_undefweak
5733 && howto->pc_relative)
5734 {
5735 /* Assume this is a call protected by other code that
5736 detect the symbol is undefined. If this is the case,
5737 we can safely ignore the overflow. If not, the
5738 program is hosed anyway, and a little warning isn't
5739 going to help. */
5740
5741 continue;
5742 }
5743
5744 if (! (*info->callbacks->reloc_overflow) (info,
5745 sym_name,
5746 howto->name,
5747 rel->r_addend,
5748 input_bfd,
5749 input_section,
5750 rel->r_offset))
5751 return FALSE;
5752 }
5753 else
5754 {
5755 (*_bfd_error_handler)
5756 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
5757 bfd_archive_filename (input_bfd),
5758 bfd_get_section_name (input_bfd, input_section),
5759 (long) rel->r_offset, howto->name, sym_name, (int) r);
5760 ret = FALSE;
5761 }
5762 }
5763 }
5764
5765 #ifdef DEBUG
5766 fprintf (stderr, "\n");
5767 #endif
5768
5769 return ret;
5770 }
5771
5772 static enum elf_reloc_type_class
5773 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5774 {
5775 switch (ELF32_R_TYPE (rela->r_info))
5776 {
5777 case R_PPC_RELATIVE:
5778 return reloc_class_relative;
5779 case R_PPC_REL24:
5780 case R_PPC_ADDR24:
5781 case R_PPC_JMP_SLOT:
5782 return reloc_class_plt;
5783 case R_PPC_COPY:
5784 return reloc_class_copy;
5785 default:
5786 return reloc_class_normal;
5787 }
5788 }
5789 \f
5790 /* Support for core dump NOTE sections. */
5791
5792 static bfd_boolean
5793 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5794 {
5795 int offset;
5796 unsigned int raw_size;
5797
5798 switch (note->descsz)
5799 {
5800 default:
5801 return FALSE;
5802
5803 case 268: /* Linux/PPC. */
5804 /* pr_cursig */
5805 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5806
5807 /* pr_pid */
5808 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5809
5810 /* pr_reg */
5811 offset = 72;
5812 raw_size = 192;
5813
5814 break;
5815 }
5816
5817 /* Make a ".reg/999" section. */
5818 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5819 raw_size, note->descpos + offset);
5820 }
5821
5822 static bfd_boolean
5823 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5824 {
5825 switch (note->descsz)
5826 {
5827 default:
5828 return FALSE;
5829
5830 case 128: /* Linux/PPC elf_prpsinfo. */
5831 elf_tdata (abfd)->core_program
5832 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
5833 elf_tdata (abfd)->core_command
5834 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
5835 }
5836
5837 /* Note that for some reason, a spurious space is tacked
5838 onto the end of the args in some (at least one anyway)
5839 implementations, so strip it off if it exists. */
5840
5841 {
5842 char *command = elf_tdata (abfd)->core_command;
5843 int n = strlen (command);
5844
5845 if (0 < n && command[n - 1] == ' ')
5846 command[n - 1] = '\0';
5847 }
5848
5849 return TRUE;
5850 }
5851 \f
5852 /* Very simple linked list structure for recording apuinfo values. */
5853 typedef struct apuinfo_list
5854 {
5855 struct apuinfo_list *next;
5856 unsigned long value;
5857 }
5858 apuinfo_list;
5859
5860 static apuinfo_list *head;
5861
5862
5863 static void
5864 apuinfo_list_init (void)
5865 {
5866 head = NULL;
5867 }
5868
5869 static void
5870 apuinfo_list_add (unsigned long value)
5871 {
5872 apuinfo_list *entry = head;
5873
5874 while (entry != NULL)
5875 {
5876 if (entry->value == value)
5877 return;
5878 entry = entry->next;
5879 }
5880
5881 entry = bfd_malloc (sizeof (* entry));
5882 if (entry == NULL)
5883 return;
5884
5885 entry->value = value;
5886 entry->next = head;
5887 head = entry;
5888 }
5889
5890 static unsigned
5891 apuinfo_list_length (void)
5892 {
5893 apuinfo_list *entry;
5894 unsigned long count;
5895
5896 for (entry = head, count = 0;
5897 entry;
5898 entry = entry->next)
5899 ++ count;
5900
5901 return count;
5902 }
5903
5904 static inline unsigned long
5905 apuinfo_list_element (unsigned long number)
5906 {
5907 apuinfo_list * entry;
5908
5909 for (entry = head;
5910 entry && number --;
5911 entry = entry->next)
5912 ;
5913
5914 return entry ? entry->value : 0;
5915 }
5916
5917 static void
5918 apuinfo_list_finish (void)
5919 {
5920 apuinfo_list *entry;
5921
5922 for (entry = head; entry;)
5923 {
5924 apuinfo_list *next = entry->next;
5925 free (entry);
5926 entry = next;
5927 }
5928
5929 head = NULL;
5930 }
5931
5932 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
5933 #define APUINFO_LABEL "APUinfo"
5934
5935 /* Scan the input BFDs and create a linked list of
5936 the APUinfo values that will need to be emitted. */
5937
5938 static void
5939 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
5940 {
5941 bfd *ibfd;
5942 asection *asec;
5943 char *buffer;
5944 unsigned num_input_sections;
5945 bfd_size_type output_section_size;
5946 unsigned i;
5947 unsigned num_entries;
5948 unsigned long offset;
5949 unsigned long length;
5950 const char *error_message = NULL;
5951
5952 if (link_info == NULL)
5953 return;
5954
5955 /* Scan the input bfds, looking for apuinfo sections. */
5956 num_input_sections = 0;
5957 output_section_size = 0;
5958
5959 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
5960 {
5961 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
5962 if (asec)
5963 {
5964 ++ num_input_sections;
5965 output_section_size += asec->_raw_size;
5966 }
5967 }
5968
5969 /* We need at least one input sections
5970 in order to make merging worthwhile. */
5971 if (num_input_sections < 1)
5972 return;
5973
5974 /* Just make sure that the output section exists as well. */
5975 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
5976 if (asec == NULL)
5977 return;
5978
5979 /* Allocate a buffer for the contents of the input sections. */
5980 buffer = bfd_malloc (output_section_size);
5981 if (buffer == NULL)
5982 return;
5983
5984 offset = 0;
5985 apuinfo_list_init ();
5986
5987 /* Read in the input sections contents. */
5988 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
5989 {
5990 unsigned long datum;
5991 char *ptr;
5992
5993 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
5994 if (asec == NULL)
5995 continue;
5996
5997 length = asec->_raw_size;
5998 if (length < 24)
5999 {
6000 error_message = _("corrupt or empty %s section in %s");
6001 goto fail;
6002 }
6003
6004 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
6005 || (bfd_bread (buffer + offset, length, ibfd) != length))
6006 {
6007 error_message = _("unable to read in %s section from %s");
6008 goto fail;
6009 }
6010
6011 /* Process the contents of the section. */
6012 ptr = buffer + offset;
6013 error_message = _("corrupt %s section in %s");
6014
6015 /* Verify the contents of the header. Note - we have to
6016 extract the values this way in order to allow for a
6017 host whose endian-ness is different from the target. */
6018 datum = bfd_get_32 (ibfd, ptr);
6019 if (datum != sizeof APUINFO_LABEL)
6020 goto fail;
6021
6022 datum = bfd_get_32 (ibfd, ptr + 8);
6023 if (datum != 0x2)
6024 goto fail;
6025
6026 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
6027 goto fail;
6028
6029 /* Get the number of bytes used for apuinfo entries. */
6030 datum = bfd_get_32 (ibfd, ptr + 4);
6031 if (datum + 20 != length)
6032 goto fail;
6033
6034 /* Make sure that we do not run off the end of the section. */
6035 if (offset + length > output_section_size)
6036 goto fail;
6037
6038 /* Scan the apuinfo section, building a list of apuinfo numbers. */
6039 for (i = 0; i < datum; i += 4)
6040 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
6041
6042 /* Update the offset. */
6043 offset += length;
6044 }
6045
6046 error_message = NULL;
6047
6048 /* Compute the size of the output section. */
6049 num_entries = apuinfo_list_length ();
6050 output_section_size = 20 + num_entries * 4;
6051
6052 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
6053
6054 if (! bfd_set_section_size (abfd, asec, output_section_size))
6055 ibfd = abfd,
6056 error_message = _("warning: unable to set size of %s section in %s");
6057
6058 fail:
6059 free (buffer);
6060
6061 if (error_message)
6062 (*_bfd_error_handler) (error_message, APUINFO_SECTION_NAME,
6063 bfd_archive_filename (ibfd));
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->_raw_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 (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->_raw_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 /* Add extra PPC sections -- Note, for now, make .sbss2 and
6136 .PPC.EMB.sbss0 a normal section, and not a bss section so
6137 that the linker doesn't crater when trying to make more than
6138 2 sections. */
6139
6140 static struct bfd_elf_special_section const ppc_elf_special_sections[]=
6141 {
6142 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
6143 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
6144 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
6145 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
6146 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
6147 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
6148 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
6149 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
6150 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
6151 { NULL, 0, 0, 0, 0 }
6152 };
6153 \f
6154 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6155 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6156 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6157 #define TARGET_BIG_NAME "elf32-powerpc"
6158 #define ELF_ARCH bfd_arch_powerpc
6159 #define ELF_MACHINE_CODE EM_PPC
6160 #ifdef __QNXTARGET__
6161 #define ELF_MAXPAGESIZE 0x1000
6162 #else
6163 #define ELF_MAXPAGESIZE 0x10000
6164 #endif
6165 #define elf_info_to_howto ppc_elf_info_to_howto
6166
6167 #ifdef EM_CYGNUS_POWERPC
6168 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6169 #endif
6170
6171 #ifdef EM_PPC_OLD
6172 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6173 #endif
6174
6175 #define elf_backend_plt_not_loaded 1
6176 #define elf_backend_got_symbol_offset 4
6177 #define elf_backend_can_gc_sections 1
6178 #define elf_backend_can_refcount 1
6179 #define elf_backend_got_header_size 12
6180 #define elf_backend_rela_normal 1
6181
6182 #define bfd_elf32_mkobject ppc_elf_mkobject
6183 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6184 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6185 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6186 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6187 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6188
6189 #define elf_backend_object_p ppc_elf_object_p
6190 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6191 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6192 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6193 #define elf_backend_relocate_section ppc_elf_relocate_section
6194 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6195 #define elf_backend_check_relocs ppc_elf_check_relocs
6196 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6197 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6198 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6199 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6200 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6201 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6202 #define elf_backend_fake_sections ppc_elf_fake_sections
6203 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6204 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
6205 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6206 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6207 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6208 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6209 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6210 #define elf_backend_write_section ppc_elf_write_section
6211 #define elf_backend_special_sections ppc_elf_special_sections
6212
6213 #include "elf32-target.h"
git-cvsimport of binutils cvsroot