Commit | Line | Data |
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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
051d5130 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
264a1fe0 | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
ae9a127f NC |
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. | |
252b5132 | 12 | |
ae9a127f NC |
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. | |
252b5132 | 17 | |
ae9a127f | 18 | You should have received a copy of the GNU General Public License |
fc0bffd6 AM |
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. */ | |
252b5132 RH |
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" | |
7619e7c7 | 34 | #include "elf32-ppc.h" |
252b5132 | 35 | |
f0fe0e16 | 36 | /* RELA relocations are used here. */ |
252b5132 | 37 | |
252b5132 | 38 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 40 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 42 | |
70bccea4 AM |
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 | |
252b5132 RH |
49 | |
50 | /* The name of the dynamic interpreter. This is put in the .interp | |
51 | section. */ | |
252b5132 RH |
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 | ||
7619e7c7 AM |
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 | ||
252b5132 | 72 | \f |
58111eb7 AM |
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 | ||
43c40ab2 AM |
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 | ||
58111eb7 | 124 | #define elf_local_ptr_offsets(bfd) \ |
43c40ab2 AM |
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 | } | |
58111eb7 | 138 | |
7fce784e AS |
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; | |
ee05f2fe AM |
154 | |
155 | /* Number of pc-relative relocs copied for the input section. */ | |
156 | bfd_size_type pc_count; | |
7fce784e AS |
157 | }; |
158 | ||
159 | /* PPC ELF linker hash entry. */ | |
160 | ||
161 | struct ppc_elf_link_hash_entry | |
162 | { | |
7619e7c7 | 163 | struct elf_link_hash_entry elf; |
7fce784e | 164 | |
58111eb7 AM |
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 | ||
7fce784e AS |
170 | /* Track dynamic relocs copied for this symbol. */ |
171 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
7619e7c7 AM |
172 | |
173 | /* Contexts in which symbol is used in the GOT (or TOC). | |
fc0bffd6 | 174 | TLS_GD .. TLS_TLS bits are or'd into the mask as the |
7619e7c7 AM |
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; | |
7fce784e AS |
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 | { | |
7619e7c7 AM |
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; | |
58111eb7 | 206 | asection *sbss; |
7619e7c7 | 207 | |
7619e7c7 AM |
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; | |
7fce784e AS |
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 * | |
55fd94b0 AM |
229 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
230 | struct bfd_hash_table *table, | |
231 | const char *string) | |
7fce784e AS |
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) | |
7619e7c7 | 246 | { |
58111eb7 | 247 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; |
7619e7c7 AM |
248 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; |
249 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
250 | } | |
7fce784e AS |
251 | |
252 | return entry; | |
253 | } | |
254 | ||
255 | /* Create a PPC ELF linker hash table. */ | |
256 | ||
257 | static struct bfd_link_hash_table * | |
55fd94b0 | 258 | ppc_elf_link_hash_table_create (bfd *abfd) |
7fce784e AS |
259 | { |
260 | struct ppc_elf_link_hash_table *ret; | |
261 | ||
58111eb7 | 262 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
7fce784e AS |
263 | if (ret == NULL) |
264 | return NULL; | |
265 | ||
7619e7c7 | 266 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, |
7fce784e AS |
267 | ppc_elf_link_hash_newfunc)) |
268 | { | |
269 | free (ret); | |
270 | return NULL; | |
271 | } | |
272 | ||
7619e7c7 | 273 | return &ret->elf.root; |
7fce784e AS |
274 | } |
275 | ||
fc0bffd6 AM |
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 | ||
7fce784e AS |
282 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
283 | ||
284 | static void | |
9c5bfbb7 | 285 | ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed, |
55fd94b0 AM |
286 | struct elf_link_hash_entry *dir, |
287 | struct elf_link_hash_entry *ind) | |
7fce784e AS |
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 | { | |
ee05f2fe | 313 | q->pc_count += p->pc_count; |
7fce784e AS |
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 | ||
7619e7c7 AM |
328 | edir->tls_mask |= eind->tls_mask; |
329 | ||
81848ca0 AM |
330 | if (ELIMINATE_COPY_RELOCS |
331 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
332 | && dir->dynamic_adjusted) |
333 | { | |
334 | /* If called to transfer flags for a weakdef during processing | |
335 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
336 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
337 | dir->ref_dynamic |= ind->ref_dynamic; | |
338 | dir->ref_regular |= ind->ref_regular; | |
339 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
340 | dir->needs_plt |= ind->needs_plt; | |
341 | } | |
fc0bffd6 AM |
342 | else |
343 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
7fce784e AS |
344 | } |
345 | \f | |
e47cd125 | 346 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 347 | |
8da6118f | 348 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
349 | /* This reloc does nothing. */ |
350 | HOWTO (R_PPC_NONE, /* type */ | |
351 | 0, /* rightshift */ | |
352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 32, /* bitsize */ | |
b34976b6 | 354 | FALSE, /* pc_relative */ |
252b5132 RH |
355 | 0, /* bitpos */ |
356 | complain_overflow_bitfield, /* complain_on_overflow */ | |
357 | bfd_elf_generic_reloc, /* special_function */ | |
358 | "R_PPC_NONE", /* name */ | |
b34976b6 | 359 | FALSE, /* partial_inplace */ |
252b5132 RH |
360 | 0, /* src_mask */ |
361 | 0, /* dst_mask */ | |
b34976b6 | 362 | FALSE), /* pcrel_offset */ |
252b5132 RH |
363 | |
364 | /* A standard 32 bit relocation. */ | |
365 | HOWTO (R_PPC_ADDR32, /* type */ | |
366 | 0, /* rightshift */ | |
367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
368 | 32, /* bitsize */ | |
b34976b6 | 369 | FALSE, /* pc_relative */ |
252b5132 RH |
370 | 0, /* bitpos */ |
371 | complain_overflow_bitfield, /* complain_on_overflow */ | |
372 | bfd_elf_generic_reloc, /* special_function */ | |
373 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 374 | FALSE, /* partial_inplace */ |
252b5132 RH |
375 | 0, /* src_mask */ |
376 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 377 | FALSE), /* pcrel_offset */ |
252b5132 RH |
378 | |
379 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
380 | FIXME: we don't check that, we just clear them. */ | |
381 | HOWTO (R_PPC_ADDR24, /* type */ | |
382 | 0, /* rightshift */ | |
383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
384 | 26, /* bitsize */ | |
b34976b6 | 385 | FALSE, /* pc_relative */ |
252b5132 RH |
386 | 0, /* bitpos */ |
387 | complain_overflow_bitfield, /* complain_on_overflow */ | |
388 | bfd_elf_generic_reloc, /* special_function */ | |
389 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 390 | FALSE, /* partial_inplace */ |
252b5132 RH |
391 | 0, /* src_mask */ |
392 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 393 | FALSE), /* pcrel_offset */ |
252b5132 RH |
394 | |
395 | /* A standard 16 bit relocation. */ | |
396 | HOWTO (R_PPC_ADDR16, /* type */ | |
397 | 0, /* rightshift */ | |
398 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
399 | 16, /* bitsize */ | |
b34976b6 | 400 | FALSE, /* pc_relative */ |
252b5132 RH |
401 | 0, /* bitpos */ |
402 | complain_overflow_bitfield, /* complain_on_overflow */ | |
403 | bfd_elf_generic_reloc, /* special_function */ | |
404 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 405 | FALSE, /* partial_inplace */ |
252b5132 RH |
406 | 0, /* src_mask */ |
407 | 0xffff, /* dst_mask */ | |
b34976b6 | 408 | FALSE), /* pcrel_offset */ |
252b5132 RH |
409 | |
410 | /* A 16 bit relocation without overflow. */ | |
411 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
b34976b6 | 415 | FALSE, /* pc_relative */ |
252b5132 RH |
416 | 0, /* bitpos */ |
417 | complain_overflow_dont,/* complain_on_overflow */ | |
418 | bfd_elf_generic_reloc, /* special_function */ | |
419 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 420 | FALSE, /* partial_inplace */ |
252b5132 RH |
421 | 0, /* src_mask */ |
422 | 0xffff, /* dst_mask */ | |
b34976b6 | 423 | FALSE), /* pcrel_offset */ |
252b5132 RH |
424 | |
425 | /* The high order 16 bits of an address. */ | |
426 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
427 | 16, /* rightshift */ | |
428 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 16, /* bitsize */ | |
b34976b6 | 430 | FALSE, /* pc_relative */ |
252b5132 RH |
431 | 0, /* bitpos */ |
432 | complain_overflow_dont, /* complain_on_overflow */ | |
433 | bfd_elf_generic_reloc, /* special_function */ | |
434 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 435 | FALSE, /* partial_inplace */ |
252b5132 RH |
436 | 0, /* src_mask */ |
437 | 0xffff, /* dst_mask */ | |
b34976b6 | 438 | FALSE), /* pcrel_offset */ |
252b5132 RH |
439 | |
440 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 441 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
442 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
443 | 16, /* rightshift */ | |
444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 16, /* bitsize */ | |
b34976b6 | 446 | FALSE, /* pc_relative */ |
252b5132 RH |
447 | 0, /* bitpos */ |
448 | complain_overflow_dont, /* complain_on_overflow */ | |
449 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
450 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 451 | FALSE, /* partial_inplace */ |
252b5132 RH |
452 | 0, /* src_mask */ |
453 | 0xffff, /* dst_mask */ | |
b34976b6 | 454 | FALSE), /* pcrel_offset */ |
252b5132 RH |
455 | |
456 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
457 | FIXME: we don't check that, we just clear them. */ | |
458 | HOWTO (R_PPC_ADDR14, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 16, /* bitsize */ | |
b34976b6 | 462 | FALSE, /* pc_relative */ |
252b5132 RH |
463 | 0, /* bitpos */ |
464 | complain_overflow_bitfield, /* complain_on_overflow */ | |
465 | bfd_elf_generic_reloc, /* special_function */ | |
466 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
252b5132 RH |
468 | 0, /* src_mask */ |
469 | 0xfffc, /* dst_mask */ | |
b34976b6 | 470 | FALSE), /* pcrel_offset */ |
252b5132 RH |
471 | |
472 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
473 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 474 | bits must be zero. */ |
252b5132 RH |
475 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
476 | 0, /* rightshift */ | |
477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 16, /* bitsize */ | |
b34976b6 | 479 | FALSE, /* pc_relative */ |
252b5132 RH |
480 | 0, /* bitpos */ |
481 | complain_overflow_bitfield, /* complain_on_overflow */ | |
482 | bfd_elf_generic_reloc, /* special_function */ | |
483 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 484 | FALSE, /* partial_inplace */ |
252b5132 RH |
485 | 0, /* src_mask */ |
486 | 0xfffc, /* dst_mask */ | |
b34976b6 | 487 | FALSE), /* pcrel_offset */ |
252b5132 RH |
488 | |
489 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
490 | indicate that the branch is not expected to be taken. The lower | |
491 | two bits must be zero. */ | |
492 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 16, /* bitsize */ | |
b34976b6 | 496 | FALSE, /* pc_relative */ |
252b5132 RH |
497 | 0, /* bitpos */ |
498 | complain_overflow_bitfield, /* complain_on_overflow */ | |
499 | bfd_elf_generic_reloc, /* special_function */ | |
500 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 501 | FALSE, /* partial_inplace */ |
252b5132 RH |
502 | 0, /* src_mask */ |
503 | 0xfffc, /* dst_mask */ | |
b34976b6 | 504 | FALSE), /* pcrel_offset */ |
252b5132 | 505 | |
8da6118f | 506 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
507 | HOWTO (R_PPC_REL24, /* type */ |
508 | 0, /* rightshift */ | |
509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 26, /* bitsize */ | |
b34976b6 | 511 | TRUE, /* pc_relative */ |
252b5132 RH |
512 | 0, /* bitpos */ |
513 | complain_overflow_signed, /* complain_on_overflow */ | |
514 | bfd_elf_generic_reloc, /* special_function */ | |
515 | "R_PPC_REL24", /* name */ | |
b34976b6 | 516 | FALSE, /* partial_inplace */ |
252b5132 RH |
517 | 0, /* src_mask */ |
518 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 519 | TRUE), /* pcrel_offset */ |
252b5132 | 520 | |
8da6118f | 521 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
522 | HOWTO (R_PPC_REL14, /* type */ |
523 | 0, /* rightshift */ | |
524 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
525 | 16, /* bitsize */ | |
b34976b6 | 526 | TRUE, /* pc_relative */ |
252b5132 RH |
527 | 0, /* bitpos */ |
528 | complain_overflow_signed, /* complain_on_overflow */ | |
529 | bfd_elf_generic_reloc, /* special_function */ | |
530 | "R_PPC_REL14", /* name */ | |
b34976b6 | 531 | FALSE, /* partial_inplace */ |
252b5132 RH |
532 | 0, /* src_mask */ |
533 | 0xfffc, /* dst_mask */ | |
b34976b6 | 534 | TRUE), /* pcrel_offset */ |
252b5132 | 535 | |
8da6118f | 536 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
537 | the branch is expected to be taken. The lower two bits must be |
538 | zero. */ | |
539 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 16, /* bitsize */ | |
b34976b6 | 543 | TRUE, /* pc_relative */ |
252b5132 RH |
544 | 0, /* bitpos */ |
545 | complain_overflow_signed, /* complain_on_overflow */ | |
546 | bfd_elf_generic_reloc, /* special_function */ | |
547 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
252b5132 RH |
549 | 0, /* src_mask */ |
550 | 0xfffc, /* dst_mask */ | |
b34976b6 | 551 | TRUE), /* pcrel_offset */ |
252b5132 | 552 | |
8da6118f | 553 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
554 | the branch is not expected to be taken. The lower two bits must |
555 | be zero. */ | |
556 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
557 | 0, /* rightshift */ | |
558 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
559 | 16, /* bitsize */ | |
b34976b6 | 560 | TRUE, /* pc_relative */ |
252b5132 RH |
561 | 0, /* bitpos */ |
562 | complain_overflow_signed, /* complain_on_overflow */ | |
563 | bfd_elf_generic_reloc, /* special_function */ | |
564 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 565 | FALSE, /* partial_inplace */ |
252b5132 RH |
566 | 0, /* src_mask */ |
567 | 0xfffc, /* dst_mask */ | |
b34976b6 | 568 | TRUE), /* pcrel_offset */ |
252b5132 RH |
569 | |
570 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
571 | symbol. */ | |
572 | HOWTO (R_PPC_GOT16, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 16, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
252b5132 RH |
577 | 0, /* bitpos */ |
578 | complain_overflow_signed, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
580 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
252b5132 RH |
582 | 0, /* src_mask */ |
583 | 0xffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
252b5132 RH |
585 | |
586 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
587 | the symbol. */ | |
588 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 16, /* bitsize */ | |
b34976b6 | 592 | FALSE, /* pc_relative */ |
252b5132 RH |
593 | 0, /* bitpos */ |
594 | complain_overflow_dont, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
252b5132 RH |
598 | 0, /* src_mask */ |
599 | 0xffff, /* dst_mask */ | |
b34976b6 | 600 | FALSE), /* pcrel_offset */ |
252b5132 RH |
601 | |
602 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
603 | the symbol. */ | |
604 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
605 | 16, /* rightshift */ | |
606 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
607 | 16, /* bitsize */ | |
b34976b6 | 608 | FALSE, /* pc_relative */ |
252b5132 RH |
609 | 0, /* bitpos */ |
610 | complain_overflow_bitfield, /* complain_on_overflow */ | |
611 | bfd_elf_generic_reloc, /* special_function */ | |
612 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 613 | FALSE, /* partial_inplace */ |
252b5132 RH |
614 | 0, /* src_mask */ |
615 | 0xffff, /* dst_mask */ | |
b34976b6 | 616 | FALSE), /* pcrel_offset */ |
252b5132 RH |
617 | |
618 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
619 | the symbol. */ | |
620 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
621 | 16, /* rightshift */ | |
622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 16, /* bitsize */ | |
b34976b6 | 624 | FALSE, /* pc_relative */ |
252b5132 RH |
625 | 0, /* bitpos */ |
626 | complain_overflow_bitfield, /* complain_on_overflow */ | |
627 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
628 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 629 | FALSE, /* partial_inplace */ |
252b5132 RH |
630 | 0, /* src_mask */ |
631 | 0xffff, /* dst_mask */ | |
b34976b6 | 632 | FALSE), /* pcrel_offset */ |
252b5132 RH |
633 | |
634 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
635 | entry for the symbol. */ | |
636 | HOWTO (R_PPC_PLTREL24, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 26, /* bitsize */ | |
b34976b6 | 640 | TRUE, /* pc_relative */ |
252b5132 RH |
641 | 0, /* bitpos */ |
642 | complain_overflow_signed, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
644 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 645 | FALSE, /* partial_inplace */ |
252b5132 RH |
646 | 0, /* src_mask */ |
647 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 648 | TRUE), /* pcrel_offset */ |
252b5132 RH |
649 | |
650 | /* This is used only by the dynamic linker. The symbol should exist | |
651 | both in the object being run and in some shared library. The | |
652 | dynamic linker copies the data addressed by the symbol from the | |
653 | shared library into the object, because the object being | |
654 | run has to have the data at some particular address. */ | |
655 | HOWTO (R_PPC_COPY, /* type */ | |
656 | 0, /* rightshift */ | |
657 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
658 | 32, /* bitsize */ | |
b34976b6 | 659 | FALSE, /* pc_relative */ |
252b5132 RH |
660 | 0, /* bitpos */ |
661 | complain_overflow_bitfield, /* complain_on_overflow */ | |
662 | bfd_elf_generic_reloc, /* special_function */ | |
663 | "R_PPC_COPY", /* name */ | |
b34976b6 | 664 | FALSE, /* partial_inplace */ |
252b5132 RH |
665 | 0, /* src_mask */ |
666 | 0, /* dst_mask */ | |
b34976b6 | 667 | FALSE), /* pcrel_offset */ |
252b5132 RH |
668 | |
669 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
670 | entries. */ | |
671 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
672 | 0, /* rightshift */ | |
673 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
674 | 32, /* bitsize */ | |
b34976b6 | 675 | FALSE, /* pc_relative */ |
252b5132 RH |
676 | 0, /* bitpos */ |
677 | complain_overflow_bitfield, /* complain_on_overflow */ | |
678 | bfd_elf_generic_reloc, /* special_function */ | |
679 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 680 | FALSE, /* partial_inplace */ |
252b5132 RH |
681 | 0, /* src_mask */ |
682 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 683 | FALSE), /* pcrel_offset */ |
252b5132 RH |
684 | |
685 | /* Marks a procedure linkage table entry for a symbol. */ | |
686 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
687 | 0, /* rightshift */ | |
688 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
689 | 32, /* bitsize */ | |
b34976b6 | 690 | FALSE, /* pc_relative */ |
252b5132 RH |
691 | 0, /* bitpos */ |
692 | complain_overflow_bitfield, /* complain_on_overflow */ | |
693 | bfd_elf_generic_reloc, /* special_function */ | |
694 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 695 | FALSE, /* partial_inplace */ |
252b5132 RH |
696 | 0, /* src_mask */ |
697 | 0, /* dst_mask */ | |
b34976b6 | 698 | FALSE), /* pcrel_offset */ |
252b5132 RH |
699 | |
700 | /* Used only by the dynamic linker. When the object is run, this | |
701 | longword is set to the load address of the object, plus the | |
702 | addend. */ | |
703 | HOWTO (R_PPC_RELATIVE, /* type */ | |
704 | 0, /* rightshift */ | |
705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
706 | 32, /* bitsize */ | |
b34976b6 | 707 | FALSE, /* pc_relative */ |
252b5132 RH |
708 | 0, /* bitpos */ |
709 | complain_overflow_bitfield, /* complain_on_overflow */ | |
710 | bfd_elf_generic_reloc, /* special_function */ | |
711 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 712 | FALSE, /* partial_inplace */ |
252b5132 RH |
713 | 0, /* src_mask */ |
714 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 715 | FALSE), /* pcrel_offset */ |
252b5132 RH |
716 | |
717 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
718 | object rather than the final value. Normally used for | |
719 | _GLOBAL_OFFSET_TABLE_. */ | |
720 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
721 | 0, /* rightshift */ | |
722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 26, /* bitsize */ | |
b34976b6 | 724 | TRUE, /* pc_relative */ |
252b5132 RH |
725 | 0, /* bitpos */ |
726 | complain_overflow_signed, /* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 729 | FALSE, /* partial_inplace */ |
252b5132 RH |
730 | 0, /* src_mask */ |
731 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 732 | TRUE), /* pcrel_offset */ |
252b5132 RH |
733 | |
734 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
735 | HOWTO (R_PPC_UADDR32, /* type */ | |
736 | 0, /* rightshift */ | |
737 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 32, /* bitsize */ | |
b34976b6 | 739 | FALSE, /* pc_relative */ |
252b5132 RH |
740 | 0, /* bitpos */ |
741 | complain_overflow_bitfield, /* complain_on_overflow */ | |
742 | bfd_elf_generic_reloc, /* special_function */ | |
743 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 744 | FALSE, /* partial_inplace */ |
252b5132 RH |
745 | 0, /* src_mask */ |
746 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 747 | FALSE), /* pcrel_offset */ |
252b5132 RH |
748 | |
749 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
750 | HOWTO (R_PPC_UADDR16, /* type */ | |
751 | 0, /* rightshift */ | |
752 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 16, /* bitsize */ | |
b34976b6 | 754 | FALSE, /* pc_relative */ |
252b5132 RH |
755 | 0, /* bitpos */ |
756 | complain_overflow_bitfield, /* complain_on_overflow */ | |
757 | bfd_elf_generic_reloc, /* special_function */ | |
758 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 759 | FALSE, /* partial_inplace */ |
252b5132 RH |
760 | 0, /* src_mask */ |
761 | 0xffff, /* dst_mask */ | |
b34976b6 | 762 | FALSE), /* pcrel_offset */ |
252b5132 RH |
763 | |
764 | /* 32-bit PC relative */ | |
765 | HOWTO (R_PPC_REL32, /* type */ | |
766 | 0, /* rightshift */ | |
767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 32, /* bitsize */ | |
b34976b6 | 769 | TRUE, /* pc_relative */ |
252b5132 RH |
770 | 0, /* bitpos */ |
771 | complain_overflow_bitfield, /* complain_on_overflow */ | |
772 | bfd_elf_generic_reloc, /* special_function */ | |
773 | "R_PPC_REL32", /* name */ | |
b34976b6 | 774 | FALSE, /* partial_inplace */ |
252b5132 RH |
775 | 0, /* src_mask */ |
776 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 777 | TRUE), /* pcrel_offset */ |
252b5132 RH |
778 | |
779 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 780 | FIXME: not supported. */ |
252b5132 RH |
781 | HOWTO (R_PPC_PLT32, /* type */ |
782 | 0, /* rightshift */ | |
783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 32, /* bitsize */ | |
b34976b6 | 785 | FALSE, /* pc_relative */ |
252b5132 RH |
786 | 0, /* bitpos */ |
787 | complain_overflow_bitfield, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
789 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 790 | FALSE, /* partial_inplace */ |
252b5132 RH |
791 | 0, /* src_mask */ |
792 | 0, /* dst_mask */ | |
b34976b6 | 793 | FALSE), /* pcrel_offset */ |
252b5132 RH |
794 | |
795 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 796 | FIXME: not supported. */ |
252b5132 RH |
797 | HOWTO (R_PPC_PLTREL32, /* type */ |
798 | 0, /* rightshift */ | |
799 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 32, /* bitsize */ | |
b34976b6 | 801 | TRUE, /* pc_relative */ |
252b5132 RH |
802 | 0, /* bitpos */ |
803 | complain_overflow_bitfield, /* complain_on_overflow */ | |
804 | bfd_elf_generic_reloc, /* special_function */ | |
805 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 806 | FALSE, /* partial_inplace */ |
252b5132 RH |
807 | 0, /* src_mask */ |
808 | 0, /* dst_mask */ | |
b34976b6 | 809 | TRUE), /* pcrel_offset */ |
252b5132 RH |
810 | |
811 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
812 | the symbol. */ | |
813 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
814 | 0, /* rightshift */ | |
815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 16, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
252b5132 RH |
818 | 0, /* bitpos */ |
819 | complain_overflow_dont, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
821 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
252b5132 RH |
823 | 0, /* src_mask */ |
824 | 0xffff, /* dst_mask */ | |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
252b5132 RH |
826 | |
827 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
828 | the symbol. */ | |
829 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
830 | 16, /* rightshift */ | |
831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 16, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
252b5132 RH |
834 | 0, /* bitpos */ |
835 | complain_overflow_bitfield, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
837 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
252b5132 RH |
839 | 0, /* src_mask */ |
840 | 0xffff, /* dst_mask */ | |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
252b5132 RH |
842 | |
843 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
844 | the symbol. */ | |
845 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
846 | 16, /* rightshift */ | |
847 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
848 | 16, /* bitsize */ | |
b34976b6 | 849 | FALSE, /* pc_relative */ |
252b5132 RH |
850 | 0, /* bitpos */ |
851 | complain_overflow_bitfield, /* complain_on_overflow */ | |
852 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
853 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 854 | FALSE, /* partial_inplace */ |
252b5132 RH |
855 | 0, /* src_mask */ |
856 | 0xffff, /* dst_mask */ | |
b34976b6 | 857 | FALSE), /* pcrel_offset */ |
252b5132 RH |
858 | |
859 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
860 | small data items. */ | |
861 | HOWTO (R_PPC_SDAREL16, /* type */ | |
862 | 0, /* rightshift */ | |
863 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
864 | 16, /* bitsize */ | |
b34976b6 | 865 | FALSE, /* pc_relative */ |
252b5132 RH |
866 | 0, /* bitpos */ |
867 | complain_overflow_signed, /* complain_on_overflow */ | |
868 | bfd_elf_generic_reloc, /* special_function */ | |
869 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 870 | FALSE, /* partial_inplace */ |
252b5132 RH |
871 | 0, /* src_mask */ |
872 | 0xffff, /* dst_mask */ | |
b34976b6 | 873 | FALSE), /* pcrel_offset */ |
252b5132 | 874 | |
c061c2d8 | 875 | /* 16-bit section relative relocation. */ |
252b5132 RH |
876 | HOWTO (R_PPC_SECTOFF, /* type */ |
877 | 0, /* rightshift */ | |
c061c2d8 AM |
878 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
879 | 16, /* bitsize */ | |
b34976b6 | 880 | FALSE, /* pc_relative */ |
252b5132 RH |
881 | 0, /* bitpos */ |
882 | complain_overflow_bitfield, /* complain_on_overflow */ | |
883 | bfd_elf_generic_reloc, /* special_function */ | |
884 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 885 | FALSE, /* partial_inplace */ |
252b5132 | 886 | 0, /* src_mask */ |
c061c2d8 | 887 | 0xffff, /* dst_mask */ |
b34976b6 | 888 | FALSE), /* pcrel_offset */ |
252b5132 | 889 | |
c3668558 | 890 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
891 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
892 | 0, /* rightshift */ | |
893 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
894 | 16, /* bitsize */ | |
b34976b6 | 895 | FALSE, /* pc_relative */ |
252b5132 RH |
896 | 0, /* bitpos */ |
897 | complain_overflow_dont, /* complain_on_overflow */ | |
898 | bfd_elf_generic_reloc, /* special_function */ | |
899 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 900 | FALSE, /* partial_inplace */ |
252b5132 RH |
901 | 0, /* src_mask */ |
902 | 0xffff, /* dst_mask */ | |
b34976b6 | 903 | FALSE), /* pcrel_offset */ |
252b5132 | 904 | |
c3668558 | 905 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
906 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
907 | 16, /* rightshift */ | |
908 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
909 | 16, /* bitsize */ | |
b34976b6 | 910 | FALSE, /* pc_relative */ |
252b5132 RH |
911 | 0, /* bitpos */ |
912 | complain_overflow_bitfield, /* complain_on_overflow */ | |
913 | bfd_elf_generic_reloc, /* special_function */ | |
914 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 915 | FALSE, /* partial_inplace */ |
252b5132 RH |
916 | 0, /* src_mask */ |
917 | 0xffff, /* dst_mask */ | |
b34976b6 | 918 | FALSE), /* pcrel_offset */ |
252b5132 | 919 | |
c3668558 | 920 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
921 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
922 | 16, /* rightshift */ | |
923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 16, /* bitsize */ | |
b34976b6 | 925 | FALSE, /* pc_relative */ |
252b5132 RH |
926 | 0, /* bitpos */ |
927 | complain_overflow_bitfield, /* complain_on_overflow */ | |
928 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
929 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 930 | FALSE, /* partial_inplace */ |
252b5132 RH |
931 | 0, /* src_mask */ |
932 | 0xffff, /* dst_mask */ | |
b34976b6 | 933 | FALSE), /* pcrel_offset */ |
252b5132 | 934 | |
7619e7c7 AM |
935 | /* Marker reloc for TLS. */ |
936 | HOWTO (R_PPC_TLS, | |
252b5132 RH |
937 | 0, /* rightshift */ |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 32, /* bitsize */ | |
b34976b6 | 940 | FALSE, /* pc_relative */ |
252b5132 | 941 | 0, /* bitpos */ |
7619e7c7 | 942 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 943 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
944 | "R_PPC_TLS", /* name */ |
945 | FALSE, /* partial_inplace */ | |
946 | 0, /* src_mask */ | |
947 | 0, /* dst_mask */ | |
948 | FALSE), /* pcrel_offset */ | |
949 | ||
950 | /* Computes the load module index of the load module that contains the | |
951 | definition of its TLS sym. */ | |
952 | HOWTO (R_PPC_DTPMOD32, | |
953 | 0, /* rightshift */ | |
954 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
955 | 32, /* bitsize */ | |
956 | FALSE, /* pc_relative */ | |
957 | 0, /* bitpos */ | |
958 | complain_overflow_dont, /* complain_on_overflow */ | |
959 | ppc_elf_unhandled_reloc, /* special_function */ | |
960 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 961 | FALSE, /* partial_inplace */ |
252b5132 RH |
962 | 0, /* src_mask */ |
963 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 964 | FALSE), /* pcrel_offset */ |
252b5132 | 965 | |
7619e7c7 AM |
966 | /* Computes a dtv-relative displacement, the difference between the value |
967 | of sym+add and the base address of the thread-local storage block that | |
968 | contains the definition of sym, minus 0x8000. */ | |
969 | HOWTO (R_PPC_DTPREL32, | |
970 | 0, /* rightshift */ | |
971 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
972 | 32, /* bitsize */ | |
973 | FALSE, /* pc_relative */ | |
974 | 0, /* bitpos */ | |
975 | complain_overflow_dont, /* complain_on_overflow */ | |
976 | ppc_elf_unhandled_reloc, /* special_function */ | |
977 | "R_PPC_DTPREL32", /* name */ | |
978 | FALSE, /* partial_inplace */ | |
979 | 0, /* src_mask */ | |
980 | 0xffffffff, /* dst_mask */ | |
981 | FALSE), /* pcrel_offset */ | |
982 | ||
983 | /* A 16 bit dtprel reloc. */ | |
984 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
985 | 0, /* rightshift */ |
986 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
987 | 16, /* bitsize */ | |
b34976b6 | 988 | FALSE, /* pc_relative */ |
252b5132 | 989 | 0, /* bitpos */ |
7619e7c7 AM |
990 | complain_overflow_signed, /* complain_on_overflow */ |
991 | ppc_elf_unhandled_reloc, /* special_function */ | |
992 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 993 | FALSE, /* partial_inplace */ |
252b5132 RH |
994 | 0, /* src_mask */ |
995 | 0xffff, /* dst_mask */ | |
b34976b6 | 996 | FALSE), /* pcrel_offset */ |
252b5132 | 997 | |
7619e7c7 AM |
998 | /* Like DTPREL16, but no overflow. */ |
999 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
1000 | 0, /* rightshift */ |
1001 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1002 | 16, /* bitsize */ | |
b34976b6 | 1003 | FALSE, /* pc_relative */ |
252b5132 | 1004 | 0, /* bitpos */ |
7619e7c7 AM |
1005 | complain_overflow_dont, /* complain_on_overflow */ |
1006 | ppc_elf_unhandled_reloc, /* special_function */ | |
1007 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 1008 | FALSE, /* partial_inplace */ |
252b5132 RH |
1009 | 0, /* src_mask */ |
1010 | 0xffff, /* dst_mask */ | |
b34976b6 | 1011 | FALSE), /* pcrel_offset */ |
252b5132 | 1012 | |
7619e7c7 AM |
1013 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
1014 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
1015 | 16, /* rightshift */ |
1016 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1017 | 16, /* bitsize */ | |
b34976b6 | 1018 | FALSE, /* pc_relative */ |
252b5132 RH |
1019 | 0, /* bitpos */ |
1020 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1021 | ppc_elf_unhandled_reloc, /* special_function */ |
1022 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 1023 | FALSE, /* partial_inplace */ |
252b5132 RH |
1024 | 0, /* src_mask */ |
1025 | 0xffff, /* dst_mask */ | |
b34976b6 | 1026 | FALSE), /* pcrel_offset */ |
252b5132 | 1027 | |
7619e7c7 AM |
1028 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
1029 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
1030 | 16, /* rightshift */ |
1031 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1032 | 16, /* bitsize */ | |
b34976b6 | 1033 | FALSE, /* pc_relative */ |
252b5132 RH |
1034 | 0, /* bitpos */ |
1035 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1036 | ppc_elf_unhandled_reloc, /* special_function */ |
1037 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 1038 | FALSE, /* partial_inplace */ |
252b5132 RH |
1039 | 0, /* src_mask */ |
1040 | 0xffff, /* dst_mask */ | |
b34976b6 | 1041 | FALSE), /* pcrel_offset */ |
252b5132 | 1042 | |
7619e7c7 AM |
1043 | /* Computes a tp-relative displacement, the difference between the value of |
1044 | sym+add and the value of the thread pointer (r13). */ | |
1045 | HOWTO (R_PPC_TPREL32, | |
1046 | 0, /* rightshift */ | |
1047 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1048 | 32, /* bitsize */ | |
1049 | FALSE, /* pc_relative */ | |
1050 | 0, /* bitpos */ | |
1051 | complain_overflow_dont, /* complain_on_overflow */ | |
1052 | ppc_elf_unhandled_reloc, /* special_function */ | |
1053 | "R_PPC_TPREL32", /* name */ | |
1054 | FALSE, /* partial_inplace */ | |
1055 | 0, /* src_mask */ | |
1056 | 0xffffffff, /* dst_mask */ | |
1057 | FALSE), /* pcrel_offset */ | |
1058 | ||
1059 | /* A 16 bit tprel reloc. */ | |
1060 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
1061 | 0, /* rightshift */ |
1062 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1063 | 16, /* bitsize */ | |
b34976b6 | 1064 | FALSE, /* pc_relative */ |
252b5132 | 1065 | 0, /* bitpos */ |
7619e7c7 AM |
1066 | complain_overflow_signed, /* complain_on_overflow */ |
1067 | ppc_elf_unhandled_reloc, /* special_function */ | |
1068 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 1069 | FALSE, /* partial_inplace */ |
252b5132 RH |
1070 | 0, /* src_mask */ |
1071 | 0xffff, /* dst_mask */ | |
b34976b6 | 1072 | FALSE), /* pcrel_offset */ |
252b5132 | 1073 | |
7619e7c7 AM |
1074 | /* Like TPREL16, but no overflow. */ |
1075 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
1076 | 0, /* rightshift */ |
1077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1078 | 16, /* bitsize */ | |
b34976b6 | 1079 | FALSE, /* pc_relative */ |
252b5132 | 1080 | 0, /* bitpos */ |
7619e7c7 AM |
1081 | complain_overflow_dont, /* complain_on_overflow */ |
1082 | ppc_elf_unhandled_reloc, /* special_function */ | |
1083 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 1084 | FALSE, /* partial_inplace */ |
252b5132 RH |
1085 | 0, /* src_mask */ |
1086 | 0xffff, /* dst_mask */ | |
b34976b6 | 1087 | FALSE), /* pcrel_offset */ |
252b5132 | 1088 | |
7619e7c7 AM |
1089 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
1090 | HOWTO (R_PPC_TPREL16_HI, | |
1091 | 16, /* rightshift */ | |
1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 16, /* bitsize */ | |
1094 | FALSE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
1096 | complain_overflow_dont, /* complain_on_overflow */ | |
1097 | ppc_elf_unhandled_reloc, /* special_function */ | |
1098 | "R_PPC_TPREL16_HI", /* name */ | |
1099 | FALSE, /* partial_inplace */ | |
1100 | 0, /* src_mask */ | |
1101 | 0xffff, /* dst_mask */ | |
1102 | FALSE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1105 | HOWTO (R_PPC_TPREL16_HA, | |
1106 | 16, /* rightshift */ | |
1107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1108 | 16, /* bitsize */ | |
1109 | FALSE, /* pc_relative */ | |
1110 | 0, /* bitpos */ | |
1111 | complain_overflow_dont, /* complain_on_overflow */ | |
1112 | ppc_elf_unhandled_reloc, /* special_function */ | |
1113 | "R_PPC_TPREL16_HA", /* name */ | |
1114 | FALSE, /* partial_inplace */ | |
1115 | 0, /* src_mask */ | |
1116 | 0xffff, /* dst_mask */ | |
1117 | FALSE), /* pcrel_offset */ | |
1118 | ||
1119 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1120 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1121 | to the first entry. */ | |
1122 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
1123 | 0, /* rightshift */ |
1124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 16, /* bitsize */ | |
b34976b6 | 1126 | FALSE, /* pc_relative */ |
252b5132 RH |
1127 | 0, /* bitpos */ |
1128 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1129 | ppc_elf_unhandled_reloc, /* special_function */ |
1130 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 1131 | FALSE, /* partial_inplace */ |
252b5132 RH |
1132 | 0, /* src_mask */ |
1133 | 0xffff, /* dst_mask */ | |
b34976b6 | 1134 | FALSE), /* pcrel_offset */ |
252b5132 | 1135 | |
7619e7c7 AM |
1136 | /* Like GOT_TLSGD16, but no overflow. */ |
1137 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1138 | 0, /* rightshift */ |
7619e7c7 | 1139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1140 | 16, /* bitsize */ |
b34976b6 | 1141 | FALSE, /* pc_relative */ |
252b5132 | 1142 | 0, /* bitpos */ |
7619e7c7 AM |
1143 | complain_overflow_dont, /* complain_on_overflow */ |
1144 | ppc_elf_unhandled_reloc, /* special_function */ | |
1145 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1146 | FALSE, /* partial_inplace */ |
252b5132 RH |
1147 | 0, /* src_mask */ |
1148 | 0xffff, /* dst_mask */ | |
b34976b6 | 1149 | FALSE), /* pcrel_offset */ |
252b5132 | 1150 | |
7619e7c7 AM |
1151 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1152 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1153 | 16, /* rightshift */ | |
1154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1155 | 16, /* bitsize */ | |
1156 | FALSE, /* pc_relative */ | |
1157 | 0, /* bitpos */ | |
1158 | complain_overflow_dont, /* complain_on_overflow */ | |
1159 | ppc_elf_unhandled_reloc, /* special_function */ | |
1160 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1161 | FALSE, /* partial_inplace */ | |
1162 | 0, /* src_mask */ | |
1163 | 0xffff, /* dst_mask */ | |
1164 | FALSE), /* pcrel_offset */ | |
252b5132 | 1165 | |
7619e7c7 AM |
1166 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1167 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1168 | 16, /* rightshift */ | |
1169 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1170 | 16, /* bitsize */ | |
1171 | FALSE, /* pc_relative */ | |
1172 | 0, /* bitpos */ | |
1173 | complain_overflow_dont, /* complain_on_overflow */ | |
1174 | ppc_elf_unhandled_reloc, /* special_function */ | |
1175 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1176 | FALSE, /* partial_inplace */ | |
1177 | 0, /* src_mask */ | |
1178 | 0xffff, /* dst_mask */ | |
1179 | FALSE), /* pcrel_offset */ | |
1180 | ||
1181 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1182 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1183 | first entry. */ | |
1184 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1185 | 0, /* rightshift */ |
1186 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 16, /* bitsize */ | |
7619e7c7 | 1188 | FALSE, /* pc_relative */ |
252b5132 RH |
1189 | 0, /* bitpos */ |
1190 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1191 | ppc_elf_unhandled_reloc, /* special_function */ |
1192 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1193 | FALSE, /* partial_inplace */ |
252b5132 RH |
1194 | 0, /* src_mask */ |
1195 | 0xffff, /* dst_mask */ | |
b34976b6 | 1196 | FALSE), /* pcrel_offset */ |
252b5132 | 1197 | |
7619e7c7 AM |
1198 | /* Like GOT_TLSLD16, but no overflow. */ |
1199 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1200 | 0, /* rightshift */ |
7619e7c7 AM |
1201 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1202 | 16, /* bitsize */ | |
b34976b6 | 1203 | FALSE, /* pc_relative */ |
252b5132 RH |
1204 | 0, /* bitpos */ |
1205 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1206 | ppc_elf_unhandled_reloc, /* special_function */ |
1207 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1208 | FALSE, /* partial_inplace */ |
252b5132 | 1209 | 0, /* src_mask */ |
7619e7c7 | 1210 | 0xffff, /* dst_mask */ |
b34976b6 | 1211 | FALSE), /* pcrel_offset */ |
252b5132 | 1212 | |
7619e7c7 AM |
1213 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1214 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1215 | 16, /* rightshift */ | |
1216 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1217 | 16, /* bitsize */ | |
b34976b6 | 1218 | FALSE, /* pc_relative */ |
252b5132 RH |
1219 | 0, /* bitpos */ |
1220 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1221 | ppc_elf_unhandled_reloc, /* special_function */ |
1222 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1223 | FALSE, /* partial_inplace */ |
252b5132 | 1224 | 0, /* src_mask */ |
7619e7c7 | 1225 | 0xffff, /* dst_mask */ |
b34976b6 | 1226 | FALSE), /* pcrel_offset */ |
252b5132 | 1227 | |
7619e7c7 AM |
1228 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1229 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1230 | 16, /* rightshift */ | |
1231 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1232 | 16, /* bitsize */ | |
1233 | FALSE, /* pc_relative */ | |
1234 | 0, /* bitpos */ | |
1235 | complain_overflow_dont, /* complain_on_overflow */ | |
1236 | ppc_elf_unhandled_reloc, /* special_function */ | |
1237 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1238 | FALSE, /* partial_inplace */ | |
1239 | 0, /* src_mask */ | |
1240 | 0xffff, /* dst_mask */ | |
1241 | FALSE), /* pcrel_offset */ | |
1242 | ||
1243 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1244 | the offset to the entry. */ | |
1245 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1246 | 0, /* rightshift */ |
1247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1248 | 16, /* bitsize */ | |
b34976b6 | 1249 | FALSE, /* pc_relative */ |
252b5132 RH |
1250 | 0, /* bitpos */ |
1251 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1252 | ppc_elf_unhandled_reloc, /* special_function */ |
1253 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1254 | FALSE, /* partial_inplace */ |
252b5132 RH |
1255 | 0, /* src_mask */ |
1256 | 0xffff, /* dst_mask */ | |
b34976b6 | 1257 | FALSE), /* pcrel_offset */ |
252b5132 | 1258 | |
7619e7c7 AM |
1259 | /* Like GOT_DTPREL16, but no overflow. */ |
1260 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1261 | 0, /* rightshift */ | |
1262 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1263 | 16, /* bitsize */ | |
1264 | FALSE, /* pc_relative */ | |
1265 | 0, /* bitpos */ | |
1266 | complain_overflow_dont, /* complain_on_overflow */ | |
1267 | ppc_elf_unhandled_reloc, /* special_function */ | |
1268 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1269 | FALSE, /* partial_inplace */ | |
1270 | 0, /* src_mask */ | |
1271 | 0xffff, /* dst_mask */ | |
1272 | FALSE), /* pcrel_offset */ | |
252b5132 | 1273 | |
7619e7c7 AM |
1274 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1275 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1276 | 16, /* rightshift */ | |
1277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_dont, /* complain_on_overflow */ | |
1282 | ppc_elf_unhandled_reloc, /* special_function */ | |
1283 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0, /* src_mask */ | |
1286 | 0xffff, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
252b5132 | 1288 | |
7619e7c7 AM |
1289 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1290 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1291 | 16, /* rightshift */ | |
1292 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1293 | 16, /* bitsize */ | |
1294 | FALSE, /* pc_relative */ | |
1295 | 0, /* bitpos */ | |
1296 | complain_overflow_dont, /* complain_on_overflow */ | |
1297 | ppc_elf_unhandled_reloc, /* special_function */ | |
1298 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1299 | FALSE, /* partial_inplace */ | |
1300 | 0, /* src_mask */ | |
1301 | 0xffff, /* dst_mask */ | |
1302 | FALSE), /* pcrel_offset */ | |
c3668558 | 1303 | |
7619e7c7 AM |
1304 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1305 | offset to the entry. */ | |
1306 | HOWTO (R_PPC_GOT_TPREL16, | |
1307 | 0, /* rightshift */ | |
1308 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1309 | 16, /* bitsize */ | |
1310 | FALSE, /* pc_relative */ | |
1311 | 0, /* bitpos */ | |
1312 | complain_overflow_signed, /* complain_on_overflow */ | |
1313 | ppc_elf_unhandled_reloc, /* special_function */ | |
1314 | "R_PPC_GOT_TPREL16", /* name */ | |
1315 | FALSE, /* partial_inplace */ | |
1316 | 0, /* src_mask */ | |
1317 | 0xffff, /* dst_mask */ | |
1318 | FALSE), /* pcrel_offset */ | |
1319 | ||
1320 | /* Like GOT_TPREL16, but no overflow. */ | |
1321 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1322 | 0, /* rightshift */ | |
1323 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1324 | 16, /* bitsize */ | |
1325 | FALSE, /* pc_relative */ | |
1326 | 0, /* bitpos */ | |
1327 | complain_overflow_dont, /* complain_on_overflow */ | |
1328 | ppc_elf_unhandled_reloc, /* special_function */ | |
1329 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1330 | FALSE, /* partial_inplace */ | |
1331 | 0, /* src_mask */ | |
1332 | 0xffff, /* dst_mask */ | |
1333 | FALSE), /* pcrel_offset */ | |
1334 | ||
1335 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1336 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1337 | 16, /* rightshift */ | |
1338 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 16, /* bitsize */ | |
1340 | FALSE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
1342 | complain_overflow_dont, /* complain_on_overflow */ | |
1343 | ppc_elf_unhandled_reloc, /* special_function */ | |
1344 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0, /* src_mask */ | |
1347 | 0xffff, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
1350 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1351 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1352 | 16, /* rightshift */ | |
1353 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1354 | 16, /* bitsize */ | |
1355 | FALSE, /* pc_relative */ | |
1356 | 0, /* bitpos */ | |
1357 | complain_overflow_dont, /* complain_on_overflow */ | |
1358 | ppc_elf_unhandled_reloc, /* special_function */ | |
1359 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1360 | FALSE, /* partial_inplace */ | |
1361 | 0, /* src_mask */ | |
1362 | 0xffff, /* dst_mask */ | |
1363 | FALSE), /* pcrel_offset */ | |
1364 | ||
1365 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1366 | in the SVR4 ELF ABI. */ | |
1367 | ||
1368 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1369 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1370 | 0, /* rightshift */ | |
1371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 32, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1376 | bfd_elf_generic_reloc, /* special_function */ | |
1377 | "R_PPC_EMB_NADDR32", /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0, /* src_mask */ | |
1380 | 0xffffffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1384 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1385 | 0, /* rightshift */ | |
1386 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 16, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
1389 | 0, /* bitpos */ | |
1390 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1391 | bfd_elf_generic_reloc, /* special_function */ | |
1392 | "R_PPC_EMB_NADDR16", /* name */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0, /* src_mask */ | |
1395 | 0xffff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
1397 | ||
1398 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1399 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1400 | 0, /* rightshift */ | |
1401 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1402 | 16, /* bitsize */ | |
1403 | FALSE, /* pc_relative */ | |
1404 | 0, /* bitpos */ | |
1405 | complain_overflow_dont,/* complain_on_overflow */ | |
1406 | bfd_elf_generic_reloc, /* special_function */ | |
1407 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1408 | FALSE, /* partial_inplace */ | |
1409 | 0, /* src_mask */ | |
1410 | 0xffff, /* dst_mask */ | |
1411 | FALSE), /* pcrel_offset */ | |
1412 | ||
1413 | /* The high order 16 bits of the addend minus the symbol. */ | |
1414 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1415 | 16, /* rightshift */ | |
1416 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 16, /* bitsize */ | |
1418 | FALSE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
1420 | complain_overflow_dont, /* complain_on_overflow */ | |
1421 | bfd_elf_generic_reloc, /* special_function */ | |
1422 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0, /* src_mask */ | |
1425 | 0xffff, /* dst_mask */ | |
1426 | FALSE), /* pcrel_offset */ | |
1427 | ||
1428 | /* The high order 16 bits of the result of the addend minus the address, | |
1429 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1430 | is negative. */ | |
1431 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1432 | 16, /* rightshift */ | |
1433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1434 | 16, /* bitsize */ | |
1435 | FALSE, /* pc_relative */ | |
1436 | 0, /* bitpos */ | |
1437 | complain_overflow_dont, /* complain_on_overflow */ | |
1438 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1439 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1440 | FALSE, /* partial_inplace */ | |
1441 | 0, /* src_mask */ | |
1442 | 0xffff, /* dst_mask */ | |
1443 | FALSE), /* pcrel_offset */ | |
1444 | ||
1445 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1446 | address in the .sdata section, and returning the offset from | |
1447 | _SDA_BASE_ for that relocation. */ | |
1448 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1449 | 0, /* rightshift */ | |
1450 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1451 | 16, /* bitsize */ | |
1452 | FALSE, /* pc_relative */ | |
1453 | 0, /* bitpos */ | |
1454 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1455 | bfd_elf_generic_reloc, /* special_function */ | |
1456 | "R_PPC_EMB_SDAI16", /* name */ | |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0, /* src_mask */ | |
1459 | 0xffff, /* dst_mask */ | |
1460 | FALSE), /* pcrel_offset */ | |
1461 | ||
1462 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1463 | address in the .sdata2 section, and returning the offset from | |
1464 | _SDA2_BASE_ for that relocation. */ | |
1465 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1466 | 0, /* rightshift */ | |
1467 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1468 | 16, /* bitsize */ | |
1469 | FALSE, /* pc_relative */ | |
1470 | 0, /* bitpos */ | |
1471 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1472 | bfd_elf_generic_reloc, /* special_function */ | |
1473 | "R_PPC_EMB_SDA2I16", /* name */ | |
1474 | FALSE, /* partial_inplace */ | |
1475 | 0, /* src_mask */ | |
1476 | 0xffff, /* dst_mask */ | |
1477 | FALSE), /* pcrel_offset */ | |
1478 | ||
1479 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1480 | small data items. */ | |
1481 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1482 | 0, /* rightshift */ | |
1483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1484 | 16, /* bitsize */ | |
1485 | FALSE, /* pc_relative */ | |
1486 | 0, /* bitpos */ | |
1487 | complain_overflow_signed, /* complain_on_overflow */ | |
1488 | bfd_elf_generic_reloc, /* special_function */ | |
1489 | "R_PPC_EMB_SDA2REL", /* name */ | |
1490 | FALSE, /* partial_inplace */ | |
1491 | 0, /* src_mask */ | |
1492 | 0xffff, /* dst_mask */ | |
1493 | FALSE), /* pcrel_offset */ | |
1494 | ||
1495 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1496 | signed offset from the appropriate base, and filling in the register | |
1497 | field with the appropriate register (0, 2, or 13). */ | |
1498 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1499 | 0, /* rightshift */ | |
1500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1501 | 16, /* bitsize */ | |
1502 | FALSE, /* pc_relative */ | |
1503 | 0, /* bitpos */ | |
1504 | complain_overflow_signed, /* complain_on_overflow */ | |
1505 | bfd_elf_generic_reloc, /* special_function */ | |
1506 | "R_PPC_EMB_SDA21", /* name */ | |
1507 | FALSE, /* partial_inplace */ | |
1508 | 0, /* src_mask */ | |
1509 | 0xffff, /* dst_mask */ | |
1510 | FALSE), /* pcrel_offset */ | |
1511 | ||
1512 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1513 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1514 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1515 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1516 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1517 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1518 | ||
1519 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1520 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1521 | register field with the appropriate register (0, 2, or 13). */ | |
1522 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1523 | 0, /* rightshift */ | |
1524 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1525 | 16, /* bitsize */ | |
1526 | TRUE, /* pc_relative */ | |
1527 | 0, /* bitpos */ | |
1528 | complain_overflow_signed, /* complain_on_overflow */ | |
1529 | bfd_elf_generic_reloc, /* special_function */ | |
1530 | "R_PPC_EMB_RELSDA", /* name */ | |
1531 | FALSE, /* partial_inplace */ | |
1532 | 0, /* src_mask */ | |
1533 | 0xffff, /* dst_mask */ | |
1534 | FALSE), /* pcrel_offset */ | |
1535 | ||
1536 | /* GNU extension to record C++ vtable hierarchy. */ | |
1537 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1538 | 0, /* rightshift */ | |
1539 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1540 | 0, /* bitsize */ | |
1541 | FALSE, /* pc_relative */ | |
1542 | 0, /* bitpos */ | |
1543 | complain_overflow_dont, /* complain_on_overflow */ | |
1544 | NULL, /* special_function */ | |
1545 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1546 | FALSE, /* partial_inplace */ | |
1547 | 0, /* src_mask */ | |
1548 | 0, /* dst_mask */ | |
1549 | FALSE), /* pcrel_offset */ | |
1550 | ||
1551 | /* GNU extension to record C++ vtable member usage. */ | |
1552 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1553 | 0, /* rightshift */ | |
1554 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 0, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_dont, /* complain_on_overflow */ | |
1559 | NULL, /* special_function */ | |
1560 | "R_PPC_GNU_VTENTRY", /* name */ | |
1561 | FALSE, /* partial_inplace */ | |
1562 | 0, /* src_mask */ | |
1563 | 0, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
1566 | /* Phony reloc to handle AIX style TOC entries. */ | |
1567 | HOWTO (R_PPC_TOC16, /* type */ | |
1568 | 0, /* rightshift */ | |
1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1570 | 16, /* bitsize */ | |
1571 | FALSE, /* pc_relative */ | |
1572 | 0, /* bitpos */ | |
1573 | complain_overflow_signed, /* complain_on_overflow */ | |
1574 | bfd_elf_generic_reloc, /* special_function */ | |
1575 | "R_PPC_TOC16", /* name */ | |
1576 | FALSE, /* partial_inplace */ | |
1577 | 0, /* src_mask */ | |
1578 | 0xffff, /* dst_mask */ | |
1579 | FALSE), /* pcrel_offset */ | |
1580 | }; | |
1581 | \f | |
1582 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1583 | ||
1584 | static void | |
55fd94b0 | 1585 | ppc_elf_howto_init (void) |
7619e7c7 AM |
1586 | { |
1587 | unsigned int i, type; | |
1588 | ||
fc0bffd6 AM |
1589 | for (i = 0; |
1590 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1591 | i++) | |
7619e7c7 AM |
1592 | { |
1593 | type = ppc_elf_howto_raw[i].type; | |
fc0bffd6 AM |
1594 | if (type >= (sizeof (ppc_elf_howto_table) |
1595 | / sizeof (ppc_elf_howto_table[0]))) | |
1596 | abort (); | |
7619e7c7 AM |
1597 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; |
1598 | } | |
1599 | } | |
1600 | \f | |
9abc968f | 1601 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) |
deaaf2f3 | 1602 | |
9abc968f | 1603 | static const int shared_stub_entry[] = |
deaaf2f3 | 1604 | { |
9abc968f AM |
1605 | 0x7c0802a6, /* mflr 0 */ |
1606 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
1607 | 0x7d6802a6, /* mflr 11 */ | |
1608 | 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ | |
1609 | 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ | |
1610 | 0x7c0803a6, /* mtlr 0 */ | |
1611 | 0x7d6903a6, /* mtctr 11 */ | |
1612 | 0x4e800420, /* bctr */ | |
deaaf2f3 EC |
1613 | }; |
1614 | ||
9abc968f | 1615 | static const int stub_entry[] = |
deaaf2f3 | 1616 | { |
9abc968f AM |
1617 | 0x3d600000, /* lis 11,xxx@ha */ |
1618 | 0x396b0000, /* addi 11,11,xxx@l */ | |
1619 | 0x7d6903a6, /* mtctr 11 */ | |
1620 | 0x4e800420, /* bctr */ | |
deaaf2f3 EC |
1621 | }; |
1622 | ||
1623 | ||
b34976b6 | 1624 | static bfd_boolean |
55fd94b0 AM |
1625 | ppc_elf_relax_section (bfd *abfd, |
1626 | asection *isec, | |
1627 | struct bfd_link_info *link_info, | |
1628 | bfd_boolean *again) | |
252b5132 | 1629 | { |
deaaf2f3 EC |
1630 | struct one_fixup |
1631 | { | |
1632 | struct one_fixup *next; | |
1633 | asection *tsec; | |
1634 | bfd_vma toff; | |
1635 | bfd_vma trampoff; | |
1636 | }; | |
252b5132 | 1637 | |
deaaf2f3 | 1638 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 | 1639 | bfd_byte *contents = NULL; |
deaaf2f3 | 1640 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 1641 | Elf_Internal_Rela *internal_relocs = NULL; |
deaaf2f3 | 1642 | Elf_Internal_Rela *irel, *irelend; |
deaaf2f3 | 1643 | struct one_fixup *fixups = NULL; |
9abc968f | 1644 | bfd_boolean changed; |
deaaf2f3 | 1645 | struct ppc_elf_link_hash_table *ppc_info; |
9abc968f | 1646 | bfd_size_type trampoff; |
252b5132 | 1647 | |
b34976b6 | 1648 | *again = FALSE; |
252b5132 | 1649 | |
a070c2b1 L |
1650 | /* Nothing to do if there are no relocations. */ |
1651 | if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0) | |
deaaf2f3 EC |
1652 | return TRUE; |
1653 | ||
eea6121a | 1654 | trampoff = (isec->size + 3) & (bfd_vma) -4; |
9abc968f AM |
1655 | /* Space for a branch around any trampolines. */ |
1656 | trampoff += 4; | |
1657 | ||
deaaf2f3 EC |
1658 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1659 | ||
1660 | /* Get a copy of the native relocations. */ | |
e656e369 AM |
1661 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
1662 | link_info->keep_memory); | |
deaaf2f3 EC |
1663 | if (internal_relocs == NULL) |
1664 | goto error_return; | |
deaaf2f3 EC |
1665 | |
1666 | ppc_info = ppc_elf_hash_table (link_info); | |
1667 | irelend = internal_relocs + isec->reloc_count; | |
252b5132 | 1668 | |
deaaf2f3 EC |
1669 | for (irel = internal_relocs; irel < irelend; irel++) |
1670 | { | |
1671 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); | |
9abc968f | 1672 | bfd_vma symaddr, reladdr, toff, roff; |
deaaf2f3 | 1673 | asection *tsec; |
deaaf2f3 EC |
1674 | struct one_fixup *f; |
1675 | size_t insn_offset = 0; | |
9abc968f AM |
1676 | bfd_vma max_branch_offset, val; |
1677 | bfd_byte *hit_addr; | |
1678 | unsigned long t0; | |
d1c6de6f | 1679 | unsigned char sym_type; |
deaaf2f3 EC |
1680 | |
1681 | switch (r_type) | |
8da6118f | 1682 | { |
deaaf2f3 EC |
1683 | case R_PPC_REL24: |
1684 | case R_PPC_LOCAL24PC: | |
9abc968f AM |
1685 | case R_PPC_PLTREL24: |
1686 | max_branch_offset = 1 << 25; | |
1687 | break; | |
1688 | ||
deaaf2f3 EC |
1689 | case R_PPC_REL14: |
1690 | case R_PPC_REL14_BRTAKEN: | |
1691 | case R_PPC_REL14_BRNTAKEN: | |
9abc968f | 1692 | max_branch_offset = 1 << 15; |
deaaf2f3 | 1693 | break; |
70bccea4 | 1694 | |
deaaf2f3 EC |
1695 | default: |
1696 | continue; | |
1697 | } | |
70bccea4 | 1698 | |
deaaf2f3 EC |
1699 | /* Get the value of the symbol referred to by the reloc. */ |
1700 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1701 | { | |
1702 | /* A local symbol. */ | |
1703 | Elf_Internal_Sym *isym; | |
1704 | ||
1705 | /* Read this BFD's local symbols. */ | |
1706 | if (isymbuf == NULL) | |
1707 | { | |
1708 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1709 | if (isymbuf == NULL) | |
1710 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1711 | symtab_hdr->sh_info, 0, | |
1712 | NULL, NULL, NULL); | |
1713 | if (isymbuf == 0) | |
1714 | goto error_return; | |
70bccea4 | 1715 | } |
deaaf2f3 EC |
1716 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
1717 | if (isym->st_shndx == SHN_UNDEF) | |
4cc11e76 | 1718 | continue; /* We can't do anything with undefined symbols. */ |
deaaf2f3 EC |
1719 | else if (isym->st_shndx == SHN_ABS) |
1720 | tsec = bfd_abs_section_ptr; | |
1721 | else if (isym->st_shndx == SHN_COMMON) | |
1722 | tsec = bfd_com_section_ptr; | |
e656e369 | 1723 | else |
deaaf2f3 EC |
1724 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1725 | ||
1726 | toff = isym->st_value; | |
d1c6de6f | 1727 | sym_type = ELF_ST_TYPE (isym->st_info); |
8da6118f | 1728 | } |
deaaf2f3 | 1729 | else |
70bccea4 | 1730 | { |
9abc968f | 1731 | /* Global symbol handling. */ |
deaaf2f3 EC |
1732 | unsigned long indx; |
1733 | struct elf_link_hash_entry *h; | |
1734 | ||
1735 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1736 | h = elf_sym_hashes (abfd)[indx]; | |
1737 | ||
1738 | while (h->root.type == bfd_link_hash_indirect | |
1739 | || h->root.type == bfd_link_hash_warning) | |
1740 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1741 | ||
9abc968f AM |
1742 | if (r_type == R_PPC_PLTREL24 |
1743 | && ppc_info->plt != NULL | |
1744 | && h->plt.offset != (bfd_vma) -1) | |
70bccea4 | 1745 | { |
9abc968f AM |
1746 | tsec = ppc_info->plt; |
1747 | toff = h->plt.offset; | |
deaaf2f3 | 1748 | } |
9abc968f AM |
1749 | else if (h->root.type == bfd_link_hash_defined |
1750 | || h->root.type == bfd_link_hash_defweak) | |
deaaf2f3 EC |
1751 | { |
1752 | tsec = h->root.u.def.section; | |
1753 | toff = h->root.u.def.value; | |
1754 | } | |
9abc968f AM |
1755 | else |
1756 | continue; | |
d1c6de6f AM |
1757 | |
1758 | sym_type = h->type; | |
deaaf2f3 EC |
1759 | } |
1760 | ||
9abc968f AM |
1761 | /* If the branch and target are in the same section, you have |
1762 | no hope of adding stubs. We'll error out later should the | |
1763 | branch overflow. */ | |
1764 | if (tsec == isec) | |
1765 | continue; | |
1766 | ||
d1c6de6f AM |
1767 | /* There probably isn't any reason to handle symbols in |
1768 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
1769 | attribute for a code section, and we are only looking at | |
1770 | branches. However, implement it correctly here as a | |
1771 | reference for other target relax_section functions. */ | |
1772 | if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
1773 | { | |
1774 | /* At this stage in linking, no SEC_MERGE symbol has been | |
1775 | adjusted, so all references to such symbols need to be | |
1776 | passed through _bfd_merged_section_offset. (Later, in | |
1777 | relocate_section, all SEC_MERGE symbols *except* for | |
1778 | section symbols have been adjusted.) | |
1779 | ||
1780 | gas may reduce relocations against symbols in SEC_MERGE | |
1781 | sections to a relocation against the section symbol when | |
1782 | the original addend was zero. When the reloc is against | |
1783 | a section symbol we should include the addend in the | |
1784 | offset passed to _bfd_merged_section_offset, since the | |
1785 | location of interest is the original symbol. On the | |
1786 | other hand, an access to "sym+addend" where "sym" is not | |
1787 | a section symbol should not include the addend; Such an | |
1788 | access is presumed to be an offset from "sym"; The | |
1789 | location of interest is just "sym". */ | |
1790 | if (sym_type == STT_SECTION) | |
1791 | toff += irel->r_addend; | |
1792 | ||
1793 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
1794 | elf_section_data (tsec)->sec_info, | |
1795 | toff); | |
1796 | ||
1797 | if (sym_type != STT_SECTION) | |
1798 | toff += irel->r_addend; | |
1799 | } | |
1800 | else | |
1801 | toff += irel->r_addend; | |
deaaf2f3 EC |
1802 | |
1803 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
1804 | ||
1805 | roff = irel->r_offset; | |
51992aec | 1806 | reladdr = isec->output_section->vma + isec->output_offset + roff; |
e656e369 AM |
1807 | |
1808 | /* If the branch is in range, no need to do anything. */ | |
9abc968f | 1809 | if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) |
e656e369 AM |
1810 | continue; |
1811 | ||
9abc968f | 1812 | /* Look for an existing fixup to this address. */ |
e656e369 AM |
1813 | for (f = fixups; f ; f = f->next) |
1814 | if (f->tsec == tsec && f->toff == toff) | |
1815 | break; | |
deaaf2f3 | 1816 | |
e656e369 AM |
1817 | if (f == NULL) |
1818 | { | |
1819 | size_t size; | |
f31a141e | 1820 | unsigned long stub_rtype; |
deaaf2f3 | 1821 | |
9abc968f AM |
1822 | val = trampoff - roff; |
1823 | if (val >= max_branch_offset) | |
1824 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
1825 | one. We'll report an error later. */ | |
1826 | continue; | |
1827 | ||
1828 | if (link_info->shared) | |
deaaf2f3 | 1829 | { |
9abc968f AM |
1830 | size = 4 * ARRAY_SIZE (shared_stub_entry); |
1831 | insn_offset = 12; | |
f31a141e | 1832 | stub_rtype = R_PPC_RELAX32PC; |
70bccea4 | 1833 | } |
deaaf2f3 EC |
1834 | else |
1835 | { | |
9abc968f AM |
1836 | size = 4 * ARRAY_SIZE (stub_entry); |
1837 | insn_offset = 0; | |
f31a141e | 1838 | stub_rtype = R_PPC_RELAX32; |
deaaf2f3 EC |
1839 | } |
1840 | ||
b4a38de6 AM |
1841 | if (R_PPC_RELAX32_PLT - R_PPC_RELAX32 |
1842 | != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC) | |
1843 | abort (); | |
1844 | if (tsec == ppc_info->plt) | |
1845 | stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32; | |
1846 | ||
e656e369 AM |
1847 | /* Hijack the old relocation. Since we need two |
1848 | relocations for this use a "composite" reloc. */ | |
1849 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
f31a141e | 1850 | stub_rtype); |
e656e369 AM |
1851 | irel->r_offset = trampoff + insn_offset; |
1852 | ||
1853 | /* Record the fixup so we don't do it again this section. */ | |
1854 | f = bfd_malloc (sizeof (*f)); | |
1855 | f->next = fixups; | |
1856 | f->tsec = tsec; | |
1857 | f->toff = toff; | |
1858 | f->trampoff = trampoff; | |
1859 | fixups = f; | |
9abc968f AM |
1860 | |
1861 | trampoff += size; | |
e656e369 AM |
1862 | } |
1863 | else | |
1864 | { | |
9abc968f AM |
1865 | val = f->trampoff - roff; |
1866 | if (val >= max_branch_offset) | |
1867 | continue; | |
1868 | ||
e656e369 AM |
1869 | /* Nop out the reloc, since we're finalizing things here. */ |
1870 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
252b5132 | 1871 | } |
e656e369 | 1872 | |
eea6121a AM |
1873 | /* Get the section contents. */ |
1874 | if (contents == NULL) | |
1875 | { | |
1876 | /* Get cached copy if it exists. */ | |
1877 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
1878 | contents = elf_section_data (isec)->this_hdr.contents; | |
1879 | else | |
1880 | { | |
1881 | /* Go get them off disk. */ | |
1882 | if (!bfd_malloc_and_get_section (abfd, isec, &contents)) | |
1883 | goto error_return; | |
1884 | } | |
1885 | } | |
1886 | ||
9abc968f AM |
1887 | /* Fix up the existing branch to hit the trampoline. */ |
1888 | hit_addr = contents + roff; | |
1889 | switch (r_type) | |
1890 | { | |
1891 | case R_PPC_REL24: | |
1892 | case R_PPC_LOCAL24PC: | |
1893 | case R_PPC_PLTREL24: | |
1894 | t0 = bfd_get_32 (abfd, hit_addr); | |
1895 | t0 &= ~0x3fffffc; | |
1896 | t0 |= val & 0x3fffffc; | |
1897 | bfd_put_32 (abfd, t0, hit_addr); | |
1898 | break; | |
e656e369 | 1899 | |
9abc968f AM |
1900 | case R_PPC_REL14: |
1901 | case R_PPC_REL14_BRTAKEN: | |
1902 | case R_PPC_REL14_BRNTAKEN: | |
1903 | t0 = bfd_get_32 (abfd, hit_addr); | |
1904 | t0 &= ~0xfffc; | |
1905 | t0 |= val & 0xfffc; | |
1906 | bfd_put_32 (abfd, t0, hit_addr); | |
1907 | break; | |
1908 | } | |
252b5132 RH |
1909 | } |
1910 | ||
9abc968f AM |
1911 | /* Write out the trampolines. */ |
1912 | changed = fixups != NULL; | |
1913 | if (fixups != NULL) | |
252b5132 | 1914 | { |
9abc968f AM |
1915 | const int *stub; |
1916 | bfd_byte *dest; | |
1917 | bfd_vma val; | |
1918 | int i, size; | |
1919 | ||
1920 | do | |
1921 | { | |
1922 | struct one_fixup *f = fixups; | |
1923 | fixups = fixups->next; | |
1924 | free (f); | |
1925 | } | |
1926 | while (fixups); | |
1927 | ||
1928 | contents = bfd_realloc (contents, trampoff); | |
1929 | if (contents == NULL) | |
1930 | goto error_return; | |
1931 | ||
eea6121a | 1932 | isec->size = (isec->size + 3) & (bfd_vma) -4; |
9abc968f | 1933 | /* Branch around the trampolines. */ |
eea6121a AM |
1934 | val = trampoff - isec->size + 0x48000000; |
1935 | dest = contents + isec->size; | |
1936 | isec->size = trampoff; | |
9abc968f AM |
1937 | bfd_put_32 (abfd, val, dest); |
1938 | dest += 4; | |
1939 | ||
1940 | if (link_info->shared) | |
1941 | { | |
1942 | stub = shared_stub_entry; | |
1943 | size = ARRAY_SIZE (shared_stub_entry); | |
1944 | } | |
1945 | else | |
1946 | { | |
1947 | stub = stub_entry; | |
1948 | size = ARRAY_SIZE (stub_entry); | |
1949 | } | |
1950 | ||
1951 | i = 0; | |
1952 | while (dest < contents + trampoff) | |
1953 | { | |
1954 | bfd_put_32 (abfd, stub[i], dest); | |
1955 | i++; | |
1956 | if (i == size) | |
1957 | i = 0; | |
1958 | dest += 4; | |
1959 | } | |
1960 | BFD_ASSERT (i == 0); | |
252b5132 | 1961 | } |
9abc968f | 1962 | |
deaaf2f3 EC |
1963 | if (isymbuf != NULL |
1964 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 1965 | { |
deaaf2f3 EC |
1966 | if (! link_info->keep_memory) |
1967 | free (isymbuf); | |
1968 | else | |
1969 | { | |
1970 | /* Cache the symbols for elf_link_input_bfd. */ | |
1971 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
1972 | } | |
252b5132 RH |
1973 | } |
1974 | ||
deaaf2f3 EC |
1975 | if (contents != NULL |
1976 | && elf_section_data (isec)->this_hdr.contents != contents) | |
252b5132 | 1977 | { |
9abc968f | 1978 | if (!changed && !link_info->keep_memory) |
deaaf2f3 | 1979 | free (contents); |
252b5132 RH |
1980 | else |
1981 | { | |
1982 | /* Cache the section contents for elf_link_input_bfd. */ | |
1983 | elf_section_data (isec)->this_hdr.contents = contents; | |
1984 | } | |
252b5132 RH |
1985 | } |
1986 | ||
deaaf2f3 EC |
1987 | if (elf_section_data (isec)->relocs != internal_relocs) |
1988 | { | |
9abc968f | 1989 | if (!changed) |
deaaf2f3 EC |
1990 | free (internal_relocs); |
1991 | else | |
1992 | elf_section_data (isec)->relocs = internal_relocs; | |
1993 | } | |
1994 | ||
9abc968f | 1995 | *again = changed; |
b34976b6 | 1996 | return TRUE; |
252b5132 | 1997 | |
70bccea4 | 1998 | error_return: |
deaaf2f3 EC |
1999 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
2000 | free (isymbuf); | |
2001 | if (contents != NULL | |
2002 | && elf_section_data (isec)->this_hdr.contents != contents) | |
2003 | free (contents); | |
2004 | if (internal_relocs != NULL | |
2005 | && elf_section_data (isec)->relocs != internal_relocs) | |
2006 | free (internal_relocs); | |
b34976b6 | 2007 | return FALSE; |
252b5132 | 2008 | } |
252b5132 RH |
2009 | \f |
2010 | static reloc_howto_type * | |
55fd94b0 AM |
2011 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2012 | bfd_reloc_code_real_type code) | |
252b5132 | 2013 | { |
7619e7c7 | 2014 | enum elf_ppc_reloc_type r; |
252b5132 | 2015 | |
e47cd125 | 2016 | /* Initialize howto table if not already done. */ |
252b5132 | 2017 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
2018 | ppc_elf_howto_init (); |
2019 | ||
55fd94b0 | 2020 | switch (code) |
252b5132 RH |
2021 | { |
2022 | default: | |
55fd94b0 | 2023 | return NULL; |
252b5132 | 2024 | |
7619e7c7 AM |
2025 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; |
2026 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
2027 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
2028 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
2029 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
2030 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
2031 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
2032 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
2033 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
2034 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
2035 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
2036 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
2037 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
2038 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
2039 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
2040 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
2041 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
2042 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
2043 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
2044 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
2045 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
2046 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
2047 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
2048 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
2049 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
2050 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
2051 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
2052 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
2053 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
2054 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
2055 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
2056 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
2057 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
2058 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
2059 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
2060 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
2061 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; | |
2062 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
2063 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
2064 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
2065 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
2066 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
2067 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
2068 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
2069 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
2070 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
2071 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
2072 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
2073 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
2074 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
2075 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
2076 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
2077 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
2078 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
2079 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
2080 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
2081 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
2082 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
2083 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
2084 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
2085 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
2086 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
2087 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
2088 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
2089 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
2090 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
2091 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
2092 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
2093 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
2094 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
2095 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
2096 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
2097 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
2098 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
2099 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
2100 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
2101 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
2102 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
2103 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
2104 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; | |
2105 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
252b5132 RH |
2106 | } |
2107 | ||
55fd94b0 | 2108 | return ppc_elf_howto_table[r]; |
252b5132 RH |
2109 | }; |
2110 | ||
2111 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2112 | ||
2113 | static void | |
55fd94b0 AM |
2114 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
2115 | arelent *cache_ptr, | |
2116 | Elf_Internal_Rela *dst) | |
252b5132 | 2117 | { |
e47cd125 | 2118 | /* Initialize howto table if not already done. */ |
8da6118f | 2119 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
2120 | ppc_elf_howto_init (); |
2121 | ||
2122 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
2123 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
2124 | } | |
2125 | ||
2126 | /* Handle the R_PPC_ADDR16_HA reloc. */ | |
2127 | ||
2128 | static bfd_reloc_status_type | |
55fd94b0 AM |
2129 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
2130 | arelent *reloc_entry, | |
2131 | asymbol *symbol, | |
2132 | void *data ATTRIBUTE_UNUSED, | |
2133 | asection *input_section, | |
2134 | bfd *output_bfd, | |
2135 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
2136 | { |
2137 | bfd_vma relocation; | |
2138 | ||
2139 | if (output_bfd != NULL) | |
2140 | { | |
2141 | reloc_entry->address += input_section->output_offset; | |
2142 | return bfd_reloc_ok; | |
2143 | } | |
2144 | ||
07515404 | 2145 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
252b5132 RH |
2146 | return bfd_reloc_outofrange; |
2147 | ||
2148 | if (bfd_is_com_section (symbol->section)) | |
2149 | relocation = 0; | |
2150 | else | |
2151 | relocation = symbol->value; | |
2152 | ||
2153 | relocation += symbol->section->output_section->vma; | |
2154 | relocation += symbol->section->output_offset; | |
2155 | relocation += reloc_entry->addend; | |
2156 | ||
2157 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
2158 | ||
2159 | return bfd_reloc_continue; | |
2160 | } | |
2161 | ||
7619e7c7 | 2162 | static bfd_reloc_status_type |
55fd94b0 AM |
2163 | ppc_elf_unhandled_reloc (bfd *abfd, |
2164 | arelent *reloc_entry, | |
2165 | asymbol *symbol, | |
2166 | void *data, | |
2167 | asection *input_section, | |
2168 | bfd *output_bfd, | |
2169 | char **error_message) | |
7619e7c7 AM |
2170 | { |
2171 | /* If this is a relocatable link (output_bfd test tells us), just | |
2172 | call the generic function. Any adjustment will be done at final | |
2173 | link time. */ | |
2174 | if (output_bfd != NULL) | |
2175 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2176 | input_section, output_bfd, error_message); | |
2177 | ||
2178 | if (error_message != NULL) | |
2179 | { | |
2180 | static char buf[60]; | |
55fd94b0 | 2181 | sprintf (buf, _("generic linker can't handle %s"), |
7619e7c7 AM |
2182 | reloc_entry->howto->name); |
2183 | *error_message = buf; | |
2184 | } | |
2185 | return bfd_reloc_dangerous; | |
2186 | } | |
2187 | ||
feee612b AM |
2188 | /* Fix bad default arch selected for a 32 bit input bfd when the |
2189 | default is 64 bit. */ | |
2190 | ||
b34976b6 | 2191 | static bfd_boolean |
55fd94b0 | 2192 | ppc_elf_object_p (bfd *abfd) |
feee612b AM |
2193 | { |
2194 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
2195 | { | |
2196 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2197 | ||
2198 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) | |
2199 | { | |
2200 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2201 | abfd->arch_info = abfd->arch_info->next; | |
2202 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2203 | } | |
2204 | } | |
b34976b6 | 2205 | return TRUE; |
feee612b AM |
2206 | } |
2207 | ||
c3668558 | 2208 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
252b5132 | 2209 | |
b34976b6 | 2210 | static bfd_boolean |
55fd94b0 | 2211 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
2212 | { |
2213 | BFD_ASSERT (!elf_flags_init (abfd) | |
2214 | || elf_elfheader (abfd)->e_flags == flags); | |
2215 | ||
2216 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
2217 | elf_flags_init (abfd) = TRUE; |
2218 | return TRUE; | |
252b5132 RH |
2219 | } |
2220 | ||
252b5132 | 2221 | /* Merge backend specific data from an object file to the output |
ae9a127f NC |
2222 | object file when linking. */ |
2223 | ||
b34976b6 | 2224 | static bfd_boolean |
55fd94b0 | 2225 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
2226 | { |
2227 | flagword old_flags; | |
2228 | flagword new_flags; | |
b34976b6 | 2229 | bfd_boolean error; |
252b5132 | 2230 | |
ae9a127f | 2231 | /* Check if we have the same endianess. */ |
82e51918 | 2232 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 2233 | return FALSE; |
252b5132 RH |
2234 | |
2235 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2236 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 2237 | return TRUE; |
252b5132 RH |
2238 | |
2239 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2240 | old_flags = elf_elfheader (obfd)->e_flags; | |
70bccea4 | 2241 | if (!elf_flags_init (obfd)) |
252b5132 | 2242 | { |
70bccea4 | 2243 | /* First call, no flags set. */ |
b34976b6 | 2244 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
2245 | elf_elfheader (obfd)->e_flags = new_flags; |
2246 | } | |
2247 | ||
70bccea4 AM |
2248 | /* Compatible flags are ok. */ |
2249 | else if (new_flags == old_flags) | |
252b5132 RH |
2250 | ; |
2251 | ||
70bccea4 AM |
2252 | /* Incompatible flags. */ |
2253 | else | |
252b5132 | 2254 | { |
70bccea4 AM |
2255 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib |
2256 | to be linked with either. */ | |
b34976b6 | 2257 | error = FALSE; |
252b5132 RH |
2258 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 |
2259 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
2260 | { | |
b34976b6 | 2261 | error = TRUE; |
252b5132 | 2262 | (*_bfd_error_handler) |
d003868e AM |
2263 | (_("%B: compiled with -mrelocatable and linked with " |
2264 | "modules compiled normally"), ibfd); | |
252b5132 RH |
2265 | } |
2266 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
2267 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
2268 | { | |
b34976b6 | 2269 | error = TRUE; |
252b5132 | 2270 | (*_bfd_error_handler) |
d003868e AM |
2271 | (_("%B: compiled normally and linked with " |
2272 | "modules compiled with -mrelocatable"), ibfd); | |
252b5132 RH |
2273 | } |
2274 | ||
2275 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
2276 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
2277 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
2278 | ||
2279 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
70bccea4 | 2280 | but each input file is either -mrelocatable or -mrelocatable-lib. */ |
252b5132 RH |
2281 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) |
2282 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
2283 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
2284 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
2285 | ||
70bccea4 AM |
2286 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if |
2287 | any module uses it. */ | |
252b5132 RH |
2288 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); |
2289 | ||
70bccea4 AM |
2290 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); |
2291 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
252b5132 | 2292 | |
ae9a127f | 2293 | /* Warn about any other mismatches. */ |
252b5132 RH |
2294 | if (new_flags != old_flags) |
2295 | { | |
b34976b6 | 2296 | error = TRUE; |
252b5132 | 2297 | (*_bfd_error_handler) |
d003868e | 2298 | (_("%B: uses different e_flags (0x%lx) fields " |
55fd94b0 | 2299 | "than previous modules (0x%lx)"), |
d003868e | 2300 | ibfd, (long) new_flags, (long) old_flags); |
252b5132 RH |
2301 | } |
2302 | ||
2303 | if (error) | |
2304 | { | |
2305 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2306 | return FALSE; |
252b5132 RH |
2307 | } |
2308 | } | |
2309 | ||
b34976b6 | 2310 | return TRUE; |
252b5132 | 2311 | } |
252b5132 RH |
2312 | \f |
2313 | /* Handle a PowerPC specific section when reading an object file. This | |
2314 | is called when elfcode.h finds a section with an unknown type. */ | |
2315 | ||
b34976b6 | 2316 | static bfd_boolean |
55fd94b0 | 2317 | ppc_elf_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name) |
252b5132 RH |
2318 | { |
2319 | asection *newsect; | |
2320 | flagword flags; | |
2321 | ||
2322 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 2323 | return FALSE; |
252b5132 RH |
2324 | |
2325 | newsect = hdr->bfd_section; | |
2326 | flags = bfd_get_section_flags (abfd, newsect); | |
2327 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2328 | flags |= SEC_EXCLUDE; | |
2329 | ||
2330 | if (hdr->sh_type == SHT_ORDERED) | |
2331 | flags |= SEC_SORT_ENTRIES; | |
2332 | ||
2333 | bfd_set_section_flags (abfd, newsect, flags); | |
b34976b6 | 2334 | return TRUE; |
252b5132 | 2335 | } |
252b5132 RH |
2336 | \f |
2337 | /* Set up any other section flags and such that may be necessary. */ | |
2338 | ||
b34976b6 | 2339 | static bfd_boolean |
55fd94b0 AM |
2340 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2341 | Elf_Internal_Shdr *shdr, | |
2342 | asection *asect) | |
252b5132 RH |
2343 | { |
2344 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
2345 | shdr->sh_flags |= SHF_EXCLUDE; | |
2346 | ||
2347 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
2348 | shdr->sh_type = SHT_ORDERED; | |
2349 | ||
b34976b6 | 2350 | return TRUE; |
252b5132 | 2351 | } |
252b5132 | 2352 | \f |
3dab13f6 AM |
2353 | /* Find a linker generated pointer with a given addend and type. */ |
2354 | ||
2355 | static elf_linker_section_pointers_t * | |
2356 | elf_find_pointer_linker_section | |
2357 | (elf_linker_section_pointers_t *linker_pointers, | |
2358 | bfd_vma addend, | |
58111eb7 | 2359 | elf_linker_section_t *lsect) |
3dab13f6 AM |
2360 | { |
2361 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) | |
58111eb7 | 2362 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) |
3dab13f6 AM |
2363 | return linker_pointers; |
2364 | ||
2365 | return NULL; | |
2366 | } | |
2367 | \f | |
2368 | /* Allocate a pointer to live in a linker created section. */ | |
2369 | ||
2370 | static bfd_boolean | |
2371 | elf_create_pointer_linker_section (bfd *abfd, | |
2372 | struct bfd_link_info *info, | |
2373 | elf_linker_section_t *lsect, | |
2374 | struct elf_link_hash_entry *h, | |
2375 | const Elf_Internal_Rela *rel) | |
2376 | { | |
2377 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2378 | elf_linker_section_pointers_t *linker_section_ptr; | |
2379 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2380 | bfd_size_type amt; | |
2381 | ||
2382 | BFD_ASSERT (lsect != NULL); | |
2383 | ||
2384 | /* Is this a global symbol? */ | |
2385 | if (h != NULL) | |
2386 | { | |
58111eb7 AM |
2387 | struct ppc_elf_link_hash_entry *eh; |
2388 | ||
3dab13f6 | 2389 | /* Has this symbol already been allocated? If so, our work is done. */ |
58111eb7 AM |
2390 | eh = (struct ppc_elf_link_hash_entry *) h; |
2391 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3dab13f6 | 2392 | rel->r_addend, |
58111eb7 | 2393 | lsect)) |
3dab13f6 AM |
2394 | return TRUE; |
2395 | ||
58111eb7 | 2396 | ptr_linker_section_ptr = &eh->linker_section_pointer; |
3dab13f6 AM |
2397 | /* Make sure this symbol is output as a dynamic symbol. */ |
2398 | if (h->dynindx == -1) | |
2399 | { | |
c152c796 | 2400 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
3dab13f6 AM |
2401 | return FALSE; |
2402 | } | |
2403 | ||
2404 | if (lsect->rel_section) | |
eea6121a | 2405 | lsect->rel_section->size += sizeof (Elf32_External_Rela); |
3dab13f6 AM |
2406 | } |
2407 | else | |
2408 | { | |
2409 | /* Allocation of a pointer to a local symbol. */ | |
2410 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2411 | ||
2412 | /* Allocate a table to hold the local symbols if first time. */ | |
2413 | if (!ptr) | |
2414 | { | |
2415 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
3dab13f6 AM |
2416 | |
2417 | amt = num_symbols; | |
2418 | amt *= sizeof (elf_linker_section_pointers_t *); | |
58111eb7 | 2419 | ptr = bfd_zalloc (abfd, amt); |
3dab13f6 AM |
2420 | |
2421 | if (!ptr) | |
2422 | return FALSE; | |
2423 | ||
2424 | elf_local_ptr_offsets (abfd) = ptr; | |
3dab13f6 AM |
2425 | } |
2426 | ||
2427 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2428 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2429 | rel->r_addend, | |
58111eb7 | 2430 | lsect)) |
3dab13f6 AM |
2431 | return TRUE; |
2432 | ||
2433 | ptr_linker_section_ptr = &ptr[r_symndx]; | |
2434 | ||
2435 | if (info->shared) | |
2436 | { | |
2437 | /* If we are generating a shared object, we need to | |
2438 | output a R_<xxx>_RELATIVE reloc so that the | |
2439 | dynamic linker can adjust this GOT entry. */ | |
2440 | BFD_ASSERT (lsect->rel_section != NULL); | |
eea6121a | 2441 | lsect->rel_section->size += sizeof (Elf32_External_Rela); |
3dab13f6 AM |
2442 | } |
2443 | } | |
2444 | ||
2445 | /* Allocate space for a pointer in the linker section, and allocate | |
2446 | a new pointer record from internal memory. */ | |
2447 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2448 | amt = sizeof (elf_linker_section_pointers_t); | |
2449 | linker_section_ptr = bfd_alloc (abfd, amt); | |
2450 | ||
2451 | if (!linker_section_ptr) | |
2452 | return FALSE; | |
2453 | ||
2454 | linker_section_ptr->next = *ptr_linker_section_ptr; | |
2455 | linker_section_ptr->addend = rel->r_addend; | |
58111eb7 | 2456 | linker_section_ptr->lsect = lsect; |
3dab13f6 AM |
2457 | linker_section_ptr->written_address_p = FALSE; |
2458 | *ptr_linker_section_ptr = linker_section_ptr; | |
2459 | ||
eea6121a AM |
2460 | linker_section_ptr->offset = lsect->section->size; |
2461 | lsect->section->size += 4; | |
3dab13f6 AM |
2462 | |
2463 | #ifdef DEBUG | |
2464 | fprintf (stderr, | |
2465 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2466 | lsect->name, (long) linker_section_ptr->offset, | |
eea6121a | 2467 | (long) lsect->section->size); |
3dab13f6 AM |
2468 | #endif |
2469 | ||
2470 | return TRUE; | |
2471 | } | |
2472 | \f | |
2473 | #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR) | |
2474 | ||
2475 | /* Fill in the address for a pointer generated in a linker section. */ | |
2476 | ||
2477 | static bfd_vma | |
2478 | elf_finish_pointer_linker_section (bfd *output_bfd, | |
2479 | bfd *input_bfd, | |
2480 | struct bfd_link_info *info, | |
2481 | elf_linker_section_t *lsect, | |
2482 | struct elf_link_hash_entry *h, | |
2483 | bfd_vma relocation, | |
2484 | const Elf_Internal_Rela *rel, | |
2485 | int relative_reloc) | |
2486 | { | |
2487 | elf_linker_section_pointers_t *linker_section_ptr; | |
2488 | ||
2489 | BFD_ASSERT (lsect != NULL); | |
2490 | ||
2491 | if (h != NULL) | |
2492 | { | |
2493 | /* Handle global symbol. */ | |
58111eb7 AM |
2494 | struct ppc_elf_link_hash_entry *eh; |
2495 | ||
2496 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3dab13f6 | 2497 | linker_section_ptr |
58111eb7 | 2498 | = elf_find_pointer_linker_section (eh->linker_section_pointer, |
3dab13f6 | 2499 | rel->r_addend, |
58111eb7 | 2500 | lsect); |
3dab13f6 AM |
2501 | |
2502 | BFD_ASSERT (linker_section_ptr != NULL); | |
2503 | ||
2504 | if (! elf_hash_table (info)->dynamic_sections_created | |
2505 | || (info->shared | |
2506 | && info->symbolic | |
f5385ebf | 2507 | && h->def_regular)) |
3dab13f6 AM |
2508 | { |
2509 | /* This is actually a static link, or it is a | |
2510 | -Bsymbolic link and the symbol is defined | |
2511 | locally. We must initialize this entry in the | |
2512 | global section. | |
2513 | ||
2514 | When doing a dynamic link, we create a .rela.<xxx> | |
2515 | relocation entry to initialize the value. This | |
2516 | is done in the finish_dynamic_symbol routine. */ | |
2517 | if (!linker_section_ptr->written_address_p) | |
2518 | { | |
2519 | linker_section_ptr->written_address_p = TRUE; | |
2520 | bfd_put_ptr (output_bfd, | |
2521 | relocation + linker_section_ptr->addend, | |
2522 | (lsect->section->contents | |
2523 | + linker_section_ptr->offset)); | |
2524 | } | |
2525 | } | |
2526 | } | |
2527 | else | |
2528 | { | |
2529 | /* Handle local symbol. */ | |
2530 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2531 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); | |
2532 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL); | |
2533 | linker_section_ptr = (elf_find_pointer_linker_section | |
2534 | (elf_local_ptr_offsets (input_bfd)[r_symndx], | |
2535 | rel->r_addend, | |
58111eb7 | 2536 | lsect)); |
3dab13f6 AM |
2537 | |
2538 | BFD_ASSERT (linker_section_ptr != NULL); | |
2539 | ||
2540 | /* Write out pointer if it hasn't been rewritten out before. */ | |
2541 | if (!linker_section_ptr->written_address_p) | |
2542 | { | |
2543 | linker_section_ptr->written_address_p = TRUE; | |
2544 | bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend, | |
2545 | lsect->section->contents + linker_section_ptr->offset); | |
2546 | ||
2547 | if (info->shared) | |
2548 | { | |
58111eb7 AM |
2549 | /* We need to generate a relative reloc for the dynamic |
2550 | linker. */ | |
2551 | ||
3dab13f6 AM |
2552 | asection *srel = lsect->rel_section; |
2553 | Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL]; | |
2554 | bfd_byte *erel; | |
9c5bfbb7 | 2555 | const struct elf_backend_data *bed; |
3dab13f6 AM |
2556 | unsigned int i; |
2557 | ||
3dab13f6 AM |
2558 | BFD_ASSERT (srel != NULL); |
2559 | ||
9c5bfbb7 | 2560 | bed = get_elf_backend_data (output_bfd); |
3dab13f6 AM |
2561 | for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) |
2562 | { | |
2563 | outrel[i].r_offset = (lsect->section->output_section->vma | |
2564 | + lsect->section->output_offset | |
2565 | + linker_section_ptr->offset); | |
2566 | outrel[i].r_info = 0; | |
2567 | outrel[i].r_addend = 0; | |
2568 | } | |
2569 | outrel[0].r_info = ELF32_R_INFO (0, relative_reloc); | |
2570 | erel = lsect->section->contents; | |
2571 | erel += (elf_section_data (lsect->section)->rel_count++ | |
2572 | * sizeof (Elf32_External_Rela)); | |
2573 | bfd_elf32_swap_reloca_out (output_bfd, outrel, erel); | |
2574 | } | |
2575 | } | |
2576 | } | |
2577 | ||
2578 | relocation = (lsect->section->output_offset | |
2579 | + linker_section_ptr->offset | |
3dab13f6 AM |
2580 | - lsect->sym_offset); |
2581 | ||
2582 | #ifdef DEBUG | |
2583 | fprintf (stderr, | |
2584 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
2585 | lsect->name, (long) relocation, (long) relocation); | |
2586 | #endif | |
2587 | ||
2588 | /* Subtract out the addend, because it will get added back in by the normal | |
2589 | processing. */ | |
2590 | return relocation - linker_section_ptr->addend; | |
2591 | } | |
2592 | \f | |
252b5132 RH |
2593 | /* Create a special linker section */ |
2594 | static elf_linker_section_t * | |
55fd94b0 AM |
2595 | ppc_elf_create_linker_section (bfd *abfd, |
2596 | struct bfd_link_info *info, | |
2597 | enum elf_linker_section_enum which) | |
252b5132 | 2598 | { |
252b5132 | 2599 | elf_linker_section_t *lsect; |
58111eb7 | 2600 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
8528d62e | 2601 | asection *s, *sym_sec; |
58111eb7 AM |
2602 | bfd_size_type amt; |
2603 | flagword flags; | |
2604 | const char *name; | |
2605 | const char *rel_name; | |
2606 | const char *sym_name; | |
2607 | bfd_vma sym_offset; | |
2608 | ||
cb2d1ef2 AM |
2609 | /* The linker creates these sections so it has somewhere to attach |
2610 | their respective symbols. Startup code (crt1.o) uses these symbols | |
2611 | to initialize a register pointing to the section. If the output | |
2612 | sections corresponding to these input sections were empty it would | |
2613 | be OK to set the symbol to 0 (or any random number), because the | |
2614 | associated register should never be used. | |
2615 | FIXME: Setting a symbol this way is silly. The symbols ought to | |
2616 | be set the same way other backends set gp. */ | |
2617 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2618 | | SEC_LINKER_CREATED); | |
58111eb7 AM |
2619 | sym_offset = 32768; |
2620 | ||
2621 | switch (which) | |
2622 | { | |
2623 | default: | |
2624 | abort (); | |
2625 | return NULL; | |
252b5132 | 2626 | |
58111eb7 AM |
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); | |
252b5132 | 2647 | |
58111eb7 AM |
2648 | lsect->sym_offset = sym_offset; |
2649 | ||
2650 | /* See if the sections already exist. */ | |
8528d62e | 2651 | sym_sec = s = bfd_get_section_by_name (htab->elf.dynobj, name); |
58111eb7 | 2652 | if (s == NULL || (s->flags & flags) != flags) |
252b5132 | 2653 | { |
58111eb7 AM |
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; | |
8528d62e DJ |
2658 | if (sym_sec == NULL) |
2659 | sym_sec = s; | |
58111eb7 AM |
2660 | } |
2661 | lsect->section = s; | |
252b5132 | 2662 | |
58111eb7 AM |
2663 | if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2 |
2664 | && !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) | |
2665 | return NULL; | |
252b5132 | 2666 | |
eea6121a | 2667 | s->size = align_power (s->size, 2); |
58111eb7 AM |
2668 | |
2669 | #ifdef DEBUG | |
2670 | fprintf (stderr, "Creating section %s, current size = %ld\n", | |
eea6121a | 2671 | name, (long) s->size); |
58111eb7 AM |
2672 | #endif |
2673 | ||
2674 | if (sym_name) | |
2675 | { | |
2676 | struct elf_link_hash_entry *h; | |
2677 | struct bfd_link_hash_entry *bh; | |
2678 | ||
2679 | #ifdef DEBUG | |
2680 | fprintf (stderr, "Adding %s to section %s\n", sym_name, name); | |
2681 | #endif | |
2682 | bh = bfd_link_hash_lookup (info->hash, sym_name, | |
2683 | FALSE, FALSE, FALSE); | |
252b5132 | 2684 | |
58111eb7 AM |
2685 | if ((bh == NULL || bh->type == bfd_link_hash_undefined) |
2686 | && !(_bfd_generic_link_add_one_symbol | |
8528d62e | 2687 | (info, abfd, sym_name, BSF_GLOBAL, sym_sec, sym_offset, NULL, |
58111eb7 AM |
2688 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
2689 | return NULL; | |
2690 | h = (struct elf_link_hash_entry *) bh; | |
2691 | ||
2692 | h->type = STT_OBJECT; | |
2693 | lsect->sym_hash = h; | |
2694 | ||
2695 | if (info->shared | |
c152c796 | 2696 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
58111eb7 AM |
2697 | return NULL; |
2698 | } | |
2699 | ||
2700 | if (info->shared) | |
2701 | { | |
2702 | s = bfd_make_section_anyway (htab->elf.dynobj, rel_name); | |
2703 | lsect->rel_section = s; | |
2704 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2705 | | SEC_LINKER_CREATED | SEC_READONLY); | |
2706 | if (s == NULL | |
2707 | || ! bfd_set_section_flags (htab->elf.dynobj, s, flags) | |
2708 | || ! bfd_set_section_alignment (htab->elf.dynobj, s, 2)) | |
2709 | return NULL; | |
252b5132 RH |
2710 | } |
2711 | ||
2712 | return lsect; | |
2713 | } | |
252b5132 | 2714 | \f |
cb2d1ef2 | 2715 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we |
8da6118f | 2716 | need to bump up the number of section headers. */ |
252b5132 RH |
2717 | |
2718 | static int | |
55fd94b0 | 2719 | ppc_elf_additional_program_headers (bfd *abfd) |
252b5132 RH |
2720 | { |
2721 | asection *s; | |
cb2d1ef2 | 2722 | int ret = 0; |
252b5132 RH |
2723 | |
2724 | s = bfd_get_section_by_name (abfd, ".sbss2"); | |
cb2d1ef2 | 2725 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) |
252b5132 RH |
2726 | ++ret; |
2727 | ||
2728 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); | |
cb2d1ef2 | 2729 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) |
252b5132 RH |
2730 | ++ret; |
2731 | ||
2732 | return ret; | |
2733 | } | |
252b5132 | 2734 | \f |
41fcb14e AM |
2735 | /* The powerpc .got has a blrl instruction in it. Mark it executable. */ |
2736 | ||
7619e7c7 | 2737 | static bfd_boolean |
55fd94b0 | 2738 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) |
41fcb14e | 2739 | { |
7619e7c7 AM |
2740 | struct ppc_elf_link_hash_table *htab; |
2741 | asection *s; | |
41fcb14e AM |
2742 | flagword flags; |
2743 | ||
2744 | if (!_bfd_elf_create_got_section (abfd, info)) | |
7619e7c7 | 2745 | return FALSE; |
41fcb14e | 2746 | |
7619e7c7 AM |
2747 | htab = ppc_elf_hash_table (info); |
2748 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
41fcb14e AM |
2749 | if (s == NULL) |
2750 | abort (); | |
2751 | ||
2752 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2753 | | SEC_LINKER_CREATED); | |
2754 | if (!bfd_set_section_flags (abfd, s, flags)) | |
7619e7c7 AM |
2755 | return FALSE; |
2756 | ||
2757 | htab->relgot = bfd_make_section (abfd, ".rela.got"); | |
2758 | if (!htab->relgot | |
2759 | || ! bfd_set_section_flags (abfd, htab->relgot, | |
2760 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2761 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2762 | | SEC_READONLY)) | |
2763 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) | |
2764 | return FALSE; | |
2765 | ||
2766 | return TRUE; | |
41fcb14e AM |
2767 | } |
2768 | ||
252b5132 RH |
2769 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2770 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2771 | to create .dynbss and .rela.bss). */ | |
2772 | ||
b34976b6 | 2773 | static bfd_boolean |
55fd94b0 | 2774 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2775 | { |
7619e7c7 AM |
2776 | struct ppc_elf_link_hash_table *htab; |
2777 | asection *s; | |
252b5132 RH |
2778 | flagword flags; |
2779 | ||
3dab13f6 AM |
2780 | htab = ppc_elf_hash_table (info); |
2781 | ||
2782 | if (htab->got == NULL | |
2783 | && !ppc_elf_create_got (abfd, info)) | |
b34976b6 | 2784 | return FALSE; |
41fcb14e | 2785 | |
8da6118f | 2786 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
b34976b6 | 2787 | return FALSE; |
252b5132 RH |
2788 | |
2789 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2790 | | SEC_LINKER_CREATED); | |
2791 | ||
7619e7c7 AM |
2792 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
2793 | htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss"); | |
252b5132 | 2794 | if (s == NULL |
264a1fe0 | 2795 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) |
b34976b6 | 2796 | return FALSE; |
252b5132 RH |
2797 | |
2798 | if (! info->shared) | |
2799 | { | |
7619e7c7 AM |
2800 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); |
2801 | htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss"); | |
252b5132 RH |
2802 | if (s == NULL |
2803 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2804 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
b34976b6 | 2805 | return FALSE; |
252b5132 | 2806 | } |
41fcb14e | 2807 | |
7619e7c7 AM |
2808 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2809 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
41fcb14e AM |
2810 | if (s == NULL) |
2811 | abort (); | |
2812 | ||
2813 | flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED; | |
2814 | return bfd_set_section_flags (abfd, s, flags); | |
252b5132 RH |
2815 | } |
2816 | ||
2817 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2818 | regular object. The current definition is in some section of the | |
2819 | dynamic object, but we're not including those sections. We have to | |
2820 | change the definition to something the rest of the link can | |
2821 | understand. */ | |
2822 | ||
b34976b6 | 2823 | static bfd_boolean |
55fd94b0 AM |
2824 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
2825 | struct elf_link_hash_entry *h) | |
252b5132 | 2826 | { |
7619e7c7 | 2827 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
2828 | asection *s; |
2829 | unsigned int power_of_two; | |
252b5132 RH |
2830 | |
2831 | #ifdef DEBUG | |
70bccea4 AM |
2832 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", |
2833 | h->root.root.string); | |
252b5132 RH |
2834 | #endif |
2835 | ||
2836 | /* Make sure we know what is going on here. */ | |
7619e7c7 AM |
2837 | htab = ppc_elf_hash_table (info); |
2838 | BFD_ASSERT (htab->elf.dynobj != NULL | |
f5385ebf | 2839 | && (h->needs_plt |
f6e332e6 | 2840 | || h->u.weakdef != NULL |
f5385ebf AM |
2841 | || (h->def_dynamic |
2842 | && h->ref_regular | |
2843 | && !h->def_regular))); | |
252b5132 | 2844 | |
7619e7c7 | 2845 | /* Deal with function syms. */ |
252b5132 | 2846 | if (h->type == STT_FUNC |
f5385ebf | 2847 | || h->needs_plt) |
252b5132 | 2848 | { |
7619e7c7 AM |
2849 | /* Clear procedure linkage table information for any symbol that |
2850 | won't need a .plt entry. */ | |
9c7a29a3 | 2851 | if (h->plt.refcount <= 0 |
fc0bffd6 | 2852 | || SYMBOL_CALLS_LOCAL (info, h) |
9c7a29a3 AM |
2853 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2854 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2855 | { |
2856 | /* A PLT entry is not required/allowed when: | |
2857 | ||
9c7a29a3 AM |
2858 | 1. We are not using ld.so; because then the PLT entry |
2859 | can't be set up, so we can't use one. In this case, | |
2860 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 2861 | |
9c7a29a3 | 2862 | 2. GC has rendered the entry unused. |
252b5132 | 2863 | |
9c7a29a3 AM |
2864 | 3. We know for certain that a call to this symbol |
2865 | will go to this object, or will remain undefined. */ | |
252b5132 | 2866 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2867 | h->needs_plt = 0; |
252b5132 | 2868 | } |
b34976b6 | 2869 | return TRUE; |
252b5132 | 2870 | } |
bbd7ec4a AM |
2871 | else |
2872 | h->plt.offset = (bfd_vma) -1; | |
252b5132 RH |
2873 | |
2874 | /* If this is a weak symbol, and there is a real definition, the | |
2875 | processor independent code will have arranged for us to see the | |
2876 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2877 | if (h->u.weakdef != NULL) |
252b5132 | 2878 | { |
f6e332e6 AM |
2879 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2880 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2881 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2882 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 2883 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 2884 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2885 | return TRUE; |
252b5132 RH |
2886 | } |
2887 | ||
2888 | /* This is a reference to a symbol defined by a dynamic object which | |
2889 | is not a function. */ | |
2890 | ||
2891 | /* If we are creating a shared library, we must presume that the | |
2892 | only references to the symbol are via the global offset table. | |
2893 | For such cases we need not do anything here; the relocations will | |
2894 | be handled correctly by relocate_section. */ | |
2895 | if (info->shared) | |
b34976b6 | 2896 | return TRUE; |
252b5132 | 2897 | |
7619e7c7 AM |
2898 | /* If there are no references to this symbol that do not use the |
2899 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2900 | if (!h->non_got_ref) |
7619e7c7 AM |
2901 | return TRUE; |
2902 | ||
ee05f2fe AM |
2903 | if (ELIMINATE_COPY_RELOCS) |
2904 | { | |
2905 | struct ppc_elf_dyn_relocs *p; | |
2906 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
2907 | { | |
2908 | s = p->sec->output_section; | |
2909 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2910 | break; | |
2911 | } | |
2912 | ||
2913 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2914 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2915 | if (p == NULL) | |
2916 | { | |
f5385ebf | 2917 | h->non_got_ref = 0; |
ee05f2fe AM |
2918 | return TRUE; |
2919 | } | |
2920 | } | |
2921 | ||
252b5132 RH |
2922 | /* We must allocate the symbol in our .dynbss section, which will |
2923 | become part of the .bss section of the executable. There will be | |
2924 | an entry for this symbol in the .dynsym section. The dynamic | |
2925 | object will contain position independent code, so all references | |
2926 | from the dynamic object to this symbol will go through the global | |
2927 | offset table. The dynamic linker will use the .dynsym entry to | |
2928 | determine the address it must put in the global offset table, so | |
2929 | both the dynamic object and the regular object will refer to the | |
2930 | same memory location for the variable. | |
2931 | ||
2932 | Of course, if the symbol is sufficiently small, we must instead | |
2933 | allocate it in .sbss. FIXME: It would be better to do this if and | |
2934 | only if there were actually SDAREL relocs for that symbol. */ | |
2935 | ||
7619e7c7 AM |
2936 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
2937 | s = htab->dynsbss; | |
252b5132 | 2938 | else |
7619e7c7 | 2939 | s = htab->dynbss; |
252b5132 RH |
2940 | BFD_ASSERT (s != NULL); |
2941 | ||
2942 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
2943 | copy the initial value out of the dynamic object and into the | |
2944 | runtime process image. We need to remember the offset into the | |
2945 | .rela.bss section we are going to use. */ | |
2946 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2947 | { | |
2948 | asection *srel; | |
2949 | ||
7619e7c7 AM |
2950 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
2951 | srel = htab->relsbss; | |
252b5132 | 2952 | else |
7619e7c7 | 2953 | srel = htab->relbss; |
252b5132 | 2954 | BFD_ASSERT (srel != NULL); |
eea6121a | 2955 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 2956 | h->needs_copy = 1; |
252b5132 RH |
2957 | } |
2958 | ||
2959 | /* We need to figure out the alignment required for this symbol. I | |
2960 | have no idea how ELF linkers handle this. */ | |
2961 | power_of_two = bfd_log2 (h->size); | |
2962 | if (power_of_two > 4) | |
2963 | power_of_two = 4; | |
2964 | ||
2965 | /* Apply the required alignment. */ | |
eea6121a | 2966 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
7619e7c7 | 2967 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
252b5132 | 2968 | { |
7619e7c7 | 2969 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 2970 | return FALSE; |
252b5132 RH |
2971 | } |
2972 | ||
2973 | /* Define the symbol as being at this point in the section. */ | |
2974 | h->root.u.def.section = s; | |
eea6121a | 2975 | h->root.u.def.value = s->size; |
252b5132 RH |
2976 | |
2977 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 2978 | s->size += h->size; |
252b5132 | 2979 | |
b34976b6 | 2980 | return TRUE; |
252b5132 | 2981 | } |
252b5132 | 2982 | \f |
ee05f2fe AM |
2983 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2984 | selects those that must be copied when linking a shared library, | |
2985 | even when the symbol is local. */ | |
2986 | ||
2987 | #define MUST_BE_DYN_RELOC(RTYPE) \ | |
2988 | ((RTYPE) != R_PPC_REL24 \ | |
2989 | && (RTYPE) != R_PPC_REL14 \ | |
2990 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2991 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2992 | && (RTYPE) != R_PPC_REL32) | |
2993 | ||
7fce784e AS |
2994 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
2995 | ||
7619e7c7 | 2996 | static bfd_boolean |
55fd94b0 | 2997 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
7619e7c7 | 2998 | { |
55fd94b0 | 2999 | struct bfd_link_info *info = inf; |
7619e7c7 AM |
3000 | struct ppc_elf_link_hash_entry *eh; |
3001 | struct ppc_elf_link_hash_table *htab; | |
3002 | struct ppc_elf_dyn_relocs *p; | |
3003 | ||
3004 | if (h->root.type == bfd_link_hash_indirect) | |
3005 | return TRUE; | |
3006 | ||
3007 | if (h->root.type == bfd_link_hash_warning) | |
3008 | /* When warning symbols are created, they **replace** the "real" | |
3009 | entry in the hash table, thus we never get to see the real | |
3010 | symbol in a hash traversal. So look at it now. */ | |
3011 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3012 | ||
3013 | htab = ppc_elf_hash_table (info); | |
3014 | if (htab->elf.dynamic_sections_created | |
9c7a29a3 | 3015 | && h->plt.refcount > 0) |
7619e7c7 AM |
3016 | { |
3017 | /* Make sure this symbol is output as a dynamic symbol. */ | |
3018 | if (h->dynindx == -1 | |
f5385ebf | 3019 | && !h->forced_local) |
7619e7c7 | 3020 | { |
c152c796 | 3021 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
7619e7c7 AM |
3022 | return FALSE; |
3023 | } | |
3024 | ||
ee05f2fe AM |
3025 | if (info->shared |
3026 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
7619e7c7 AM |
3027 | { |
3028 | asection *s = htab->plt; | |
3029 | ||
3030 | /* If this is the first .plt entry, make room for the special | |
3031 | first entry. */ | |
eea6121a AM |
3032 | if (s->size == 0) |
3033 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
7619e7c7 AM |
3034 | |
3035 | /* The PowerPC PLT is actually composed of two parts, the | |
3036 | first part is 2 words (for a load and a jump), and then | |
3037 | there is a remaining word available at the end. */ | |
3038 | h->plt.offset = (PLT_INITIAL_ENTRY_SIZE | |
3039 | + (PLT_SLOT_SIZE | |
eea6121a | 3040 | * ((s->size - PLT_INITIAL_ENTRY_SIZE) |
7619e7c7 AM |
3041 | / PLT_ENTRY_SIZE))); |
3042 | ||
3043 | /* If this symbol is not defined in a regular file, and we | |
3044 | are not generating a shared library, then set the symbol | |
3045 | to this location in the .plt. This is required to make | |
3046 | function pointers compare as equal between the normal | |
3047 | executable and the shared library. */ | |
3048 | if (! info->shared | |
f5385ebf | 3049 | && !h->def_regular) |
7619e7c7 AM |
3050 | { |
3051 | h->root.u.def.section = s; | |
3052 | h->root.u.def.value = h->plt.offset; | |
3053 | } | |
3054 | ||
3055 | /* Make room for this entry. After the 8192nd entry, room | |
3056 | for two entries is allocated. */ | |
eea6121a AM |
3057 | s->size += PLT_ENTRY_SIZE; |
3058 | if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
f2c822e3 | 3059 | > PLT_NUM_SINGLE_ENTRIES) |
eea6121a | 3060 | s->size += PLT_ENTRY_SIZE; |
7619e7c7 AM |
3061 | |
3062 | /* We also need to make an entry in the .rela.plt section. */ | |
eea6121a | 3063 | htab->relplt->size += sizeof (Elf32_External_Rela); |
7619e7c7 AM |
3064 | } |
3065 | else | |
3066 | { | |
3067 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 3068 | h->needs_plt = 0; |
7619e7c7 AM |
3069 | } |
3070 | } | |
3071 | else | |
3072 | { | |
3073 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 3074 | h->needs_plt = 0; |
7619e7c7 | 3075 | } |
7fce784e | 3076 | |
7619e7c7 AM |
3077 | eh = (struct ppc_elf_link_hash_entry *) h; |
3078 | if (eh->elf.got.refcount > 0) | |
3079 | { | |
3080 | /* Make sure this symbol is output as a dynamic symbol. */ | |
3081 | if (eh->elf.dynindx == -1 | |
f5385ebf | 3082 | && !eh->elf.forced_local) |
7619e7c7 | 3083 | { |
c152c796 | 3084 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) |
7619e7c7 AM |
3085 | return FALSE; |
3086 | } | |
7fce784e | 3087 | |
7619e7c7 | 3088 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
f5385ebf | 3089 | && !eh->elf.def_dynamic) |
7619e7c7 AM |
3090 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ |
3091 | eh->elf.got.offset = (bfd_vma) -1; | |
3092 | else | |
3093 | { | |
3094 | bfd_boolean dyn; | |
eea6121a | 3095 | eh->elf.got.offset = htab->got->size; |
7619e7c7 AM |
3096 | if ((eh->tls_mask & TLS_TLS) != 0) |
3097 | { | |
70bccea4 | 3098 | if ((eh->tls_mask & TLS_LD) != 0) |
eea6121a | 3099 | htab->got->size += 8; |
70bccea4 | 3100 | if ((eh->tls_mask & TLS_GD) != 0) |
eea6121a | 3101 | htab->got->size += 8; |
7619e7c7 | 3102 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) |
eea6121a | 3103 | htab->got->size += 4; |
7619e7c7 | 3104 | if ((eh->tls_mask & TLS_DTPREL) != 0) |
eea6121a | 3105 | htab->got->size += 4; |
7619e7c7 AM |
3106 | } |
3107 | else | |
eea6121a | 3108 | htab->got->size += 4; |
7619e7c7 | 3109 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
3110 | if ((info->shared |
3111 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
3112 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
3113 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
7619e7c7 AM |
3114 | { |
3115 | /* All the entries we allocated need relocs. */ | |
eea6121a AM |
3116 | htab->relgot->size |
3117 | += ((htab->got->size - eh->elf.got.offset) / 4 | |
7619e7c7 AM |
3118 | * sizeof (Elf32_External_Rela)); |
3119 | /* Except LD only needs one. */ | |
3120 | if ((eh->tls_mask & TLS_LD) != 0) | |
eea6121a | 3121 | htab->relgot->size -= sizeof (Elf32_External_Rela); |
7619e7c7 AM |
3122 | } |
3123 | } | |
3124 | } | |
3125 | else | |
3126 | eh->elf.got.offset = (bfd_vma) -1; | |
7fce784e | 3127 | |
ee05f2fe AM |
3128 | if (eh->dyn_relocs == NULL) |
3129 | return TRUE; | |
3130 | ||
3131 | /* In the shared -Bsymbolic case, discard space allocated for | |
3132 | dynamic pc-relative relocs against symbols which turn out to be | |
3133 | defined in regular objects. For the normal shared case, discard | |
3134 | space for relocs that have become local due to symbol visibility | |
3135 | changes. */ | |
586119b3 | 3136 | |
ee05f2fe AM |
3137 | if (info->shared) |
3138 | { | |
9c7a29a3 AM |
3139 | /* Relocs that use pc_count are those that appear on a call insn, |
3140 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
3141 | generated via assembly. We want calls to protected symbols to | |
3142 | resolve directly to the function rather than going via the plt. | |
3143 | If people want function pointer comparisons to work as expected | |
55fd94b0 | 3144 | then they should avoid writing weird assembly. */ |
09695f56 | 3145 | if (SYMBOL_CALLS_LOCAL (info, h)) |
ee05f2fe AM |
3146 | { |
3147 | struct ppc_elf_dyn_relocs **pp; | |
3148 | ||
3149 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
3150 | { | |
3151 | p->count -= p->pc_count; | |
3152 | p->pc_count = 0; | |
3153 | if (p->count == 0) | |
3154 | *pp = p->next; | |
3155 | else | |
3156 | pp = &p->next; | |
3157 | } | |
3158 | } | |
4e795f50 AM |
3159 | |
3160 | /* Also discard relocs on undefined weak syms with non-default | |
3161 | visibility. */ | |
3162 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3163 | && h->root.type == bfd_link_hash_undefweak) | |
3164 | eh->dyn_relocs = NULL; | |
a876ecf9 JJ |
3165 | |
3166 | /* Make sure undefined weak symbols are output as a dynamic symbol | |
3167 | in PIEs. */ | |
3168 | if (info->pie | |
3169 | && eh->dyn_relocs != NULL | |
3170 | && h->dynindx == -1 | |
3171 | && h->root.type == bfd_link_hash_undefweak | |
f5385ebf | 3172 | && !h->forced_local) |
a876ecf9 | 3173 | { |
c152c796 | 3174 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
a876ecf9 JJ |
3175 | return FALSE; |
3176 | } | |
ee05f2fe AM |
3177 | } |
3178 | else if (ELIMINATE_COPY_RELOCS) | |
3179 | { | |
3180 | /* For the non-shared case, discard space for relocs against | |
3181 | symbols which turn out to need copy relocs or are not | |
3182 | dynamic. */ | |
3183 | ||
f5385ebf AM |
3184 | if (!h->non_got_ref |
3185 | && h->def_dynamic | |
3186 | && !h->def_regular) | |
ee05f2fe AM |
3187 | { |
3188 | /* Make sure this symbol is output as a dynamic symbol. | |
3189 | Undefined weak syms won't yet be marked as dynamic. */ | |
3190 | if (h->dynindx == -1 | |
f5385ebf | 3191 | && !h->forced_local) |
ee05f2fe | 3192 | { |
c152c796 | 3193 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
ee05f2fe AM |
3194 | return FALSE; |
3195 | } | |
3196 | ||
3197 | /* If that succeeded, we know we'll be keeping all the | |
3198 | relocs. */ | |
3199 | if (h->dynindx != -1) | |
3200 | goto keep; | |
3201 | } | |
3202 | ||
3203 | eh->dyn_relocs = NULL; | |
3204 | ||
3205 | keep: ; | |
3206 | } | |
3207 | ||
3208 | /* Finally, allocate space. */ | |
7619e7c7 | 3209 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
7fce784e AS |
3210 | { |
3211 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 3212 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
7fce784e AS |
3213 | } |
3214 | ||
3215 | return TRUE; | |
3216 | } | |
3217 | ||
3218 | /* Find any dynamic relocs that apply to read-only sections. */ | |
3219 | ||
3220 | static bfd_boolean | |
55fd94b0 | 3221 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) |
7fce784e AS |
3222 | { |
3223 | struct ppc_elf_dyn_relocs *p; | |
3224 | ||
3225 | if (h->root.type == bfd_link_hash_indirect) | |
3226 | return TRUE; | |
3227 | ||
3228 | if (h->root.type == bfd_link_hash_warning) | |
3229 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3230 | ||
3231 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
3232 | { | |
3233 | asection *s = p->sec->output_section; | |
3234 | ||
3235 | if (s != NULL | |
3236 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
3237 | == (SEC_READONLY | SEC_ALLOC))) | |
3238 | { | |
3239 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
3240 | ||
3241 | /* Not an error, just cut short the traversal. */ | |
3242 | return FALSE; | |
3243 | } | |
3244 | } | |
3245 | return TRUE; | |
3246 | } | |
3247 | ||
252b5132 RH |
3248 | /* Set the sizes of the dynamic sections. */ |
3249 | ||
b34976b6 | 3250 | static bfd_boolean |
55fd94b0 AM |
3251 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3252 | struct bfd_link_info *info) | |
252b5132 | 3253 | { |
7619e7c7 | 3254 | struct ppc_elf_link_hash_table *htab; |
252b5132 | 3255 | asection *s; |
b34976b6 | 3256 | bfd_boolean relocs; |
7fce784e | 3257 | bfd *ibfd; |
252b5132 RH |
3258 | |
3259 | #ifdef DEBUG | |
3260 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); | |
3261 | #endif | |
3262 | ||
7619e7c7 AM |
3263 | htab = ppc_elf_hash_table (info); |
3264 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 RH |
3265 | |
3266 | if (elf_hash_table (info)->dynamic_sections_created) | |
3267 | { | |
3268 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 3269 | if (info->executable) |
252b5132 | 3270 | { |
7619e7c7 | 3271 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); |
252b5132 | 3272 | BFD_ASSERT (s != NULL); |
eea6121a | 3273 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
3274 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3275 | } | |
3276 | } | |
7619e7c7 AM |
3277 | |
3278 | if (htab->tlsld_got.refcount > 0) | |
252b5132 | 3279 | { |
eea6121a AM |
3280 | htab->tlsld_got.offset = htab->got->size; |
3281 | htab->got->size += 8; | |
7619e7c7 | 3282 | if (info->shared) |
eea6121a | 3283 | htab->relgot->size += sizeof (Elf32_External_Rela); |
252b5132 | 3284 | } |
7619e7c7 AM |
3285 | else |
3286 | htab->tlsld_got.offset = (bfd_vma) -1; | |
252b5132 | 3287 | |
7619e7c7 AM |
3288 | /* Set up .got offsets for local syms, and space for local dynamic |
3289 | relocs. */ | |
7fce784e AS |
3290 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
3291 | { | |
7619e7c7 AM |
3292 | bfd_signed_vma *local_got; |
3293 | bfd_signed_vma *end_local_got; | |
3294 | char *lgot_masks; | |
3295 | bfd_size_type locsymcount; | |
3296 | Elf_Internal_Shdr *symtab_hdr; | |
3297 | asection *srel; | |
3298 | ||
7fce784e AS |
3299 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
3300 | continue; | |
3301 | ||
3302 | for (s = ibfd->sections; s != NULL; s = s->next) | |
3303 | { | |
3304 | struct ppc_elf_dyn_relocs *p; | |
3305 | ||
3306 | for (p = ((struct ppc_elf_dyn_relocs *) | |
70bccea4 AM |
3307 | elf_section_data (s)->local_dynrel); |
3308 | p != NULL; | |
3309 | p = p->next) | |
7fce784e AS |
3310 | { |
3311 | if (!bfd_is_abs_section (p->sec) | |
3312 | && bfd_is_abs_section (p->sec->output_section)) | |
3313 | { | |
3314 | /* Input section has been discarded, either because | |
3315 | it is a copy of a linkonce section or due to | |
3316 | linker script /DISCARD/, so we'll be discarding | |
3317 | the relocs too. */ | |
3318 | } | |
3319 | else if (p->count != 0) | |
3320 | { | |
eea6121a | 3321 | elf_section_data (p->sec)->sreloc->size |
7fce784e AS |
3322 | += p->count * sizeof (Elf32_External_Rela); |
3323 | if ((p->sec->output_section->flags | |
3324 | & (SEC_READONLY | SEC_ALLOC)) | |
3325 | == (SEC_READONLY | SEC_ALLOC)) | |
3326 | info->flags |= DF_TEXTREL; | |
3327 | } | |
3328 | } | |
3329 | } | |
7619e7c7 AM |
3330 | |
3331 | local_got = elf_local_got_refcounts (ibfd); | |
3332 | if (!local_got) | |
3333 | continue; | |
3334 | ||
3335 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3336 | locsymcount = symtab_hdr->sh_info; | |
3337 | end_local_got = local_got + locsymcount; | |
3338 | lgot_masks = (char *) end_local_got; | |
3339 | s = htab->got; | |
3340 | srel = htab->relgot; | |
3341 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) | |
3342 | if (*local_got > 0) | |
3343 | { | |
3344 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
3345 | { | |
3346 | /* If just an LD reloc, we'll just use | |
3347 | htab->tlsld_got.offset. */ | |
3348 | if (htab->tlsld_got.offset == (bfd_vma) -1) | |
3349 | { | |
eea6121a AM |
3350 | htab->tlsld_got.offset = s->size; |
3351 | s->size += 8; | |
7619e7c7 | 3352 | if (info->shared) |
eea6121a | 3353 | srel->size += sizeof (Elf32_External_Rela); |
7619e7c7 AM |
3354 | } |
3355 | *local_got = (bfd_vma) -1; | |
3356 | } | |
3357 | else | |
3358 | { | |
eea6121a | 3359 | *local_got = s->size; |
7619e7c7 AM |
3360 | if ((*lgot_masks & TLS_TLS) != 0) |
3361 | { | |
3362 | if ((*lgot_masks & TLS_GD) != 0) | |
eea6121a | 3363 | s->size += 8; |
7619e7c7 | 3364 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) |
eea6121a | 3365 | s->size += 4; |
7619e7c7 | 3366 | if ((*lgot_masks & TLS_DTPREL) != 0) |
eea6121a | 3367 | s->size += 4; |
7619e7c7 AM |
3368 | } |
3369 | else | |
eea6121a | 3370 | s->size += 4; |
7619e7c7 | 3371 | if (info->shared) |
eea6121a AM |
3372 | srel->size += ((s->size - *local_got) / 4 |
3373 | * sizeof (Elf32_External_Rela)); | |
7619e7c7 AM |
3374 | } |
3375 | } | |
3376 | else | |
3377 | *local_got = (bfd_vma) -1; | |
7fce784e AS |
3378 | } |
3379 | ||
3380 | /* Allocate space for global sym dynamic relocs. */ | |
7619e7c7 | 3381 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); |
7fce784e | 3382 | |
7619e7c7 AM |
3383 | /* We've now determined the sizes of the various dynamic sections. |
3384 | Allocate memory for them. */ | |
b34976b6 | 3385 | relocs = FALSE; |
7619e7c7 | 3386 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) |
252b5132 | 3387 | { |
252b5132 RH |
3388 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
3389 | continue; | |
3390 | ||
7619e7c7 | 3391 | if (s == htab->plt |
cb2d1ef2 | 3392 | || s == htab->got) |
252b5132 | 3393 | { |
7619e7c7 AM |
3394 | /* Strip this section if we don't need it; see the |
3395 | comment below. */ | |
252b5132 | 3396 | } |
cb2d1ef2 AM |
3397 | else if ((htab->sdata != NULL && s == htab->sdata->section) |
3398 | || (htab->sdata2 != NULL && s == htab->sdata2->section)) | |
3399 | { | |
3400 | if (s->size == 0) | |
3401 | /* Don't strip these sections. We need them because they | |
3402 | define _SDA_BASE_ and _SDA2_BASE_. crt1.o makes a | |
3403 | reference to _SDA_BASE_ to set up r13. */ | |
3404 | continue; | |
3405 | } | |
7619e7c7 | 3406 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
252b5132 | 3407 | { |
eea6121a | 3408 | if (s->size == 0) |
252b5132 RH |
3409 | { |
3410 | /* If we don't need this section, strip it from the | |
3411 | output file. This is mostly to handle .rela.bss and | |
3412 | .rela.plt. We must create both sections in | |
3413 | create_dynamic_sections, because they must be created | |
3414 | before the linker maps input sections to output | |
3415 | sections. The linker does that before | |
3416 | adjust_dynamic_symbol is called, and it is that | |
3417 | function which decides whether anything needs to go | |
3418 | into these sections. */ | |
252b5132 RH |
3419 | } |
3420 | else | |
3421 | { | |
c3668558 | 3422 | /* Remember whether there are any relocation sections. */ |
b34976b6 | 3423 | relocs = TRUE; |
252b5132 | 3424 | |
252b5132 RH |
3425 | /* We use the reloc_count field as a counter if we need |
3426 | to copy relocs into the output file. */ | |
3427 | s->reloc_count = 0; | |
3428 | } | |
3429 | } | |
7619e7c7 | 3430 | else |
252b5132 RH |
3431 | { |
3432 | /* It's not one of our sections, so don't allocate space. */ | |
3433 | continue; | |
3434 | } | |
3435 | ||
eea6121a | 3436 | if (s->size == 0) |
252b5132 | 3437 | { |
7f8d5fc9 | 3438 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
3439 | continue; |
3440 | } | |
3441 | ||
3442 | /* Allocate memory for the section contents. */ | |
eea6121a | 3443 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); |
7619e7c7 | 3444 | if (s->contents == NULL) |
b34976b6 | 3445 | return FALSE; |
252b5132 RH |
3446 | } |
3447 | ||
7619e7c7 | 3448 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
3449 | { |
3450 | /* Add some entries to the .dynamic section. We fill in the | |
3451 | values later, in ppc_elf_finish_dynamic_sections, but we | |
3452 | must add the entries now so that we get the correct size for | |
3453 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3454 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3455 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3456 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3457 | |
36af4a4e | 3458 | if (info->executable) |
252b5132 | 3459 | { |
dc810e39 | 3460 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3461 | return FALSE; |
252b5132 RH |
3462 | } |
3463 | ||
eea6121a | 3464 | if (htab->plt != NULL && htab->plt->size != 0) |
252b5132 | 3465 | { |
dc810e39 AM |
3466 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3467 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3468 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3469 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3470 | return FALSE; |
252b5132 RH |
3471 | } |
3472 | ||
3473 | if (relocs) | |
3474 | { | |
dc810e39 AM |
3475 | if (!add_dynamic_entry (DT_RELA, 0) |
3476 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3477 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3478 | return FALSE; |
252b5132 RH |
3479 | } |
3480 | ||
7fce784e AS |
3481 | /* If any dynamic relocs apply to a read-only section, then we |
3482 | need a DT_TEXTREL entry. */ | |
3483 | if ((info->flags & DF_TEXTREL) == 0) | |
3484 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
55fd94b0 | 3485 | info); |
7fce784e | 3486 | |
29c2fb7c | 3487 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 3488 | { |
dc810e39 | 3489 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3490 | return FALSE; |
252b5132 RH |
3491 | } |
3492 | } | |
dc810e39 | 3493 | #undef add_dynamic_entry |
252b5132 | 3494 | |
b34976b6 | 3495 | return TRUE; |
252b5132 | 3496 | } |
252b5132 | 3497 | \f |
7619e7c7 | 3498 | static bfd_boolean |
55fd94b0 AM |
3499 | update_local_sym_info (bfd *abfd, |
3500 | Elf_Internal_Shdr *symtab_hdr, | |
3501 | unsigned long r_symndx, | |
3502 | int tls_type) | |
7619e7c7 AM |
3503 | { |
3504 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); | |
3505 | char *local_got_tls_masks; | |
3506 | ||
3507 | if (local_got_refcounts == NULL) | |
3508 | { | |
3509 | bfd_size_type size = symtab_hdr->sh_info; | |
3510 | ||
3511 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
55fd94b0 | 3512 | local_got_refcounts = bfd_zalloc (abfd, size); |
7619e7c7 AM |
3513 | if (local_got_refcounts == NULL) |
3514 | return FALSE; | |
3515 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
3516 | } | |
3517 | ||
3518 | local_got_refcounts[r_symndx] += 1; | |
3519 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
3520 | local_got_tls_masks[r_symndx] |= tls_type; | |
3521 | return TRUE; | |
3522 | } | |
3523 | ||
3524 | static void | |
55fd94b0 | 3525 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) |
7619e7c7 AM |
3526 | { |
3527 | (*_bfd_error_handler) | |
d003868e AM |
3528 | (_("%B: relocation %s cannot be used when making a shared object"), |
3529 | abfd, | |
55fd94b0 | 3530 | ppc_elf_howto_table[r_type]->name); |
7619e7c7 AM |
3531 | bfd_set_error (bfd_error_bad_value); |
3532 | } | |
3533 | ||
252b5132 RH |
3534 | /* Look through the relocs for a section during the first phase, and |
3535 | allocate space in the global offset table or procedure linkage | |
3536 | table. */ | |
3537 | ||
b34976b6 | 3538 | static bfd_boolean |
55fd94b0 AM |
3539 | ppc_elf_check_relocs (bfd *abfd, |
3540 | struct bfd_link_info *info, | |
3541 | asection *sec, | |
3542 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3543 | { |
7619e7c7 | 3544 | struct ppc_elf_link_hash_table *htab; |
252b5132 | 3545 | Elf_Internal_Shdr *symtab_hdr; |
7619e7c7 | 3546 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
3547 | const Elf_Internal_Rela *rel; |
3548 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 3549 | asection *sreloc; |
252b5132 | 3550 | |
1049f94e | 3551 | if (info->relocatable) |
b34976b6 | 3552 | return TRUE; |
252b5132 RH |
3553 | |
3554 | #ifdef DEBUG | |
d003868e AM |
3555 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3556 | sec, abfd); | |
252b5132 RH |
3557 | #endif |
3558 | ||
e47cd125 AM |
3559 | /* Initialize howto table if not already done. */ |
3560 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3561 | ppc_elf_howto_init (); | |
3562 | ||
252b5132 RH |
3563 | /* Create the linker generated sections all the time so that the |
3564 | special symbols are created. */ | |
7619e7c7 AM |
3565 | htab = ppc_elf_hash_table (info); |
3566 | if (htab->sdata == NULL) | |
252b5132 | 3567 | { |
58111eb7 AM |
3568 | htab->sdata = ppc_elf_create_linker_section (abfd, info, |
3569 | LINKER_SECTION_SDATA); | |
7619e7c7 | 3570 | if (htab->sdata == NULL) |
b34976b6 | 3571 | return FALSE; |
252b5132 RH |
3572 | } |
3573 | ||
7619e7c7 | 3574 | if (htab->sdata2 == NULL) |
252b5132 | 3575 | { |
58111eb7 AM |
3576 | htab->sdata2 = ppc_elf_create_linker_section (abfd, info, |
3577 | LINKER_SECTION_SDATA2); | |
7619e7c7 | 3578 | if (htab->sdata2 == NULL) |
b34976b6 | 3579 | return FALSE; |
252b5132 RH |
3580 | } |
3581 | ||
252b5132 | 3582 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
252b5132 | 3583 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 RH |
3584 | sreloc = NULL; |
3585 | ||
3586 | rel_end = relocs + sec->reloc_count; | |
3587 | for (rel = relocs; rel < rel_end; rel++) | |
3588 | { | |
3589 | unsigned long r_symndx; | |
7619e7c7 | 3590 | enum elf_ppc_reloc_type r_type; |
252b5132 | 3591 | struct elf_link_hash_entry *h; |
7619e7c7 | 3592 | int tls_type = 0; |
252b5132 RH |
3593 | |
3594 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3595 | if (r_symndx < symtab_hdr->sh_info) | |
3596 | h = NULL; | |
3597 | else | |
3598 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3599 | ||
3600 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3601 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3602 | startup code. */ | |
3603 | if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3604 | { | |
7619e7c7 | 3605 | if (htab->got == NULL) |
252b5132 | 3606 | { |
7619e7c7 AM |
3607 | if (htab->elf.dynobj == NULL) |
3608 | htab->elf.dynobj = abfd; | |
3609 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
b34976b6 | 3610 | return FALSE; |
252b5132 RH |
3611 | } |
3612 | } | |
3613 | ||
55fd94b0 | 3614 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 | 3615 | switch (r_type) |
252b5132 | 3616 | { |
7619e7c7 AM |
3617 | case R_PPC_GOT_TLSLD16: |
3618 | case R_PPC_GOT_TLSLD16_LO: | |
3619 | case R_PPC_GOT_TLSLD16_HI: | |
3620 | case R_PPC_GOT_TLSLD16_HA: | |
3621 | htab->tlsld_got.refcount += 1; | |
3622 | tls_type = TLS_TLS | TLS_LD; | |
3623 | goto dogottls; | |
3624 | ||
3625 | case R_PPC_GOT_TLSGD16: | |
3626 | case R_PPC_GOT_TLSGD16_LO: | |
3627 | case R_PPC_GOT_TLSGD16_HI: | |
3628 | case R_PPC_GOT_TLSGD16_HA: | |
3629 | tls_type = TLS_TLS | TLS_GD; | |
3630 | goto dogottls; | |
3631 | ||
3632 | case R_PPC_GOT_TPREL16: | |
3633 | case R_PPC_GOT_TPREL16_LO: | |
3634 | case R_PPC_GOT_TPREL16_HI: | |
3635 | case R_PPC_GOT_TPREL16_HA: | |
3636 | if (info->shared) | |
3637 | info->flags |= DF_STATIC_TLS; | |
3638 | tls_type = TLS_TLS | TLS_TPREL; | |
3639 | goto dogottls; | |
3640 | ||
3641 | case R_PPC_GOT_DTPREL16: | |
3642 | case R_PPC_GOT_DTPREL16_LO: | |
3643 | case R_PPC_GOT_DTPREL16_HI: | |
3644 | case R_PPC_GOT_DTPREL16_HA: | |
3645 | tls_type = TLS_TLS | TLS_DTPREL; | |
3646 | dogottls: | |
3647 | sec->has_tls_reloc = 1; | |
3648 | /* Fall thru */ | |
3649 | ||
70bccea4 | 3650 | /* GOT16 relocations */ |
252b5132 RH |
3651 | case R_PPC_GOT16: |
3652 | case R_PPC_GOT16_LO: | |
3653 | case R_PPC_GOT16_HI: | |
3654 | case R_PPC_GOT16_HA: | |
3655 | /* This symbol requires a global offset table entry. */ | |
7619e7c7 | 3656 | if (htab->got == NULL) |
252b5132 | 3657 | { |
7619e7c7 AM |
3658 | if (htab->elf.dynobj == NULL) |
3659 | htab->elf.dynobj = abfd; | |
3660 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
b34976b6 | 3661 | return FALSE; |
252b5132 | 3662 | } |
252b5132 RH |
3663 | if (h != NULL) |
3664 | { | |
7619e7c7 AM |
3665 | h->got.refcount += 1; |
3666 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
252b5132 RH |
3667 | } |
3668 | else | |
7619e7c7 AM |
3669 | /* This is a global offset table entry for a local symbol. */ |
3670 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3671 | return FALSE; | |
252b5132 RH |
3672 | break; |
3673 | ||
70bccea4 | 3674 | /* Indirect .sdata relocation. */ |
252b5132 RH |
3675 | case R_PPC_EMB_SDAI16: |
3676 | if (info->shared) | |
3677 | { | |
7619e7c7 | 3678 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3679 | return FALSE; |
252b5132 | 3680 | } |
3dab13f6 AM |
3681 | if (!elf_create_pointer_linker_section (abfd, info, |
3682 | htab->sdata, h, rel)) | |
b34976b6 | 3683 | return FALSE; |
252b5132 RH |
3684 | break; |
3685 | ||
70bccea4 | 3686 | /* Indirect .sdata2 relocation. */ |
252b5132 RH |
3687 | case R_PPC_EMB_SDA2I16: |
3688 | if (info->shared) | |
3689 | { | |
7619e7c7 | 3690 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3691 | return FALSE; |
252b5132 | 3692 | } |
3dab13f6 AM |
3693 | if (!elf_create_pointer_linker_section (abfd, info, |
3694 | htab->sdata2, h, rel)) | |
b34976b6 | 3695 | return FALSE; |
252b5132 RH |
3696 | break; |
3697 | ||
3698 | case R_PPC_SDAREL16: | |
3699 | case R_PPC_EMB_SDA2REL: | |
3700 | case R_PPC_EMB_SDA21: | |
7619e7c7 AM |
3701 | case R_PPC_EMB_RELSDA: |
3702 | case R_PPC_EMB_NADDR32: | |
3703 | case R_PPC_EMB_NADDR16: | |
3704 | case R_PPC_EMB_NADDR16_LO: | |
3705 | case R_PPC_EMB_NADDR16_HI: | |
3706 | case R_PPC_EMB_NADDR16_HA: | |
252b5132 RH |
3707 | if (info->shared) |
3708 | { | |
7619e7c7 | 3709 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3710 | return FALSE; |
252b5132 RH |
3711 | } |
3712 | break; | |
3713 | ||
3714 | case R_PPC_PLT32: | |
3715 | case R_PPC_PLTREL24: | |
7619e7c7 | 3716 | case R_PPC_PLTREL32: |
252b5132 RH |
3717 | case R_PPC_PLT16_LO: |
3718 | case R_PPC_PLT16_HI: | |
3719 | case R_PPC_PLT16_HA: | |
3720 | #ifdef DEBUG | |
3721 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3722 | #endif | |
3723 | /* This symbol requires a procedure linkage table entry. We | |
70bccea4 AM |
3724 | actually build the entry in finish_dynamic_symbol, |
3725 | because this might be a case of linking PIC code without | |
3726 | linking in any dynamic objects, in which case we don't | |
3727 | need to generate a procedure linkage table after all. */ | |
252b5132 RH |
3728 | |
3729 | if (h == NULL) | |
3730 | { | |
3731 | /* It does not make sense to have a procedure linkage | |
70bccea4 | 3732 | table entry for a local symbol. */ |
d003868e | 3733 | (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against " |
d85f2c7d | 3734 | "local symbol"), |
d003868e AM |
3735 | abfd, |
3736 | sec, | |
d85f2c7d AM |
3737 | (long) rel->r_offset, |
3738 | ppc_elf_howto_table[r_type]->name); | |
252b5132 | 3739 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3740 | return FALSE; |
252b5132 RH |
3741 | } |
3742 | ||
f5385ebf | 3743 | h->needs_plt = 1; |
51b64d56 | 3744 | h->plt.refcount++; |
252b5132 RH |
3745 | break; |
3746 | ||
3747 | /* The following relocations don't need to propagate the | |
3748 | relocation if linking a shared object since they are | |
3749 | section relative. */ | |
3750 | case R_PPC_SECTOFF: | |
3751 | case R_PPC_SECTOFF_LO: | |
3752 | case R_PPC_SECTOFF_HI: | |
3753 | case R_PPC_SECTOFF_HA: | |
7619e7c7 AM |
3754 | case R_PPC_DTPREL16: |
3755 | case R_PPC_DTPREL16_LO: | |
3756 | case R_PPC_DTPREL16_HI: | |
3757 | case R_PPC_DTPREL16_HA: | |
3758 | case R_PPC_TOC16: | |
3759 | break; | |
3760 | ||
3761 | /* This are just markers. */ | |
3762 | case R_PPC_TLS: | |
3763 | case R_PPC_EMB_MRKREF: | |
3764 | case R_PPC_NONE: | |
3765 | case R_PPC_max: | |
3766 | break; | |
3767 | ||
3768 | /* These should only appear in dynamic objects. */ | |
3769 | case R_PPC_COPY: | |
3770 | case R_PPC_GLOB_DAT: | |
3771 | case R_PPC_JMP_SLOT: | |
3772 | case R_PPC_RELATIVE: | |
3773 | break; | |
3774 | ||
3775 | /* These aren't handled yet. We'll report an error later. */ | |
3776 | case R_PPC_ADDR30: | |
3777 | case R_PPC_EMB_RELSEC16: | |
3778 | case R_PPC_EMB_RELST_LO: | |
3779 | case R_PPC_EMB_RELST_HI: | |
3780 | case R_PPC_EMB_RELST_HA: | |
3781 | case R_PPC_EMB_BIT_FLD: | |
252b5132 RH |
3782 | break; |
3783 | ||
ae9a127f | 3784 | /* This refers only to functions defined in the shared library. */ |
252b5132 RH |
3785 | case R_PPC_LOCAL24PC: |
3786 | break; | |
3787 | ||
3788 | /* This relocation describes the C++ object vtable hierarchy. | |
3789 | Reconstruct it for later use during GC. */ | |
3790 | case R_PPC_GNU_VTINHERIT: | |
c152c796 | 3791 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 3792 | return FALSE; |
252b5132 RH |
3793 | break; |
3794 | ||
3795 | /* This relocation describes which C++ vtable entries are actually | |
3796 | used. Record for later use during GC. */ | |
3797 | case R_PPC_GNU_VTENTRY: | |
c152c796 | 3798 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 3799 | return FALSE; |
252b5132 RH |
3800 | break; |
3801 | ||
7619e7c7 AM |
3802 | /* We shouldn't really be seeing these. */ |
3803 | case R_PPC_TPREL32: | |
3804 | if (info->shared) | |
3805 | info->flags |= DF_STATIC_TLS; | |
3806 | goto dodyn; | |
3807 | ||
3808 | /* Nor these. */ | |
3809 | case R_PPC_DTPMOD32: | |
3810 | case R_PPC_DTPREL32: | |
3811 | goto dodyn; | |
3812 | ||
3813 | case R_PPC_TPREL16: | |
3814 | case R_PPC_TPREL16_LO: | |
3815 | case R_PPC_TPREL16_HI: | |
3816 | case R_PPC_TPREL16_HA: | |
3817 | if (info->shared) | |
3818 | info->flags |= DF_STATIC_TLS; | |
3819 | goto dodyn; | |
3820 | ||
252b5132 RH |
3821 | /* When creating a shared object, we must copy these |
3822 | relocs into the output file. We create a reloc | |
3823 | section in dynobj and make room for the reloc. */ | |
3824 | case R_PPC_REL24: | |
3825 | case R_PPC_REL14: | |
3826 | case R_PPC_REL14_BRTAKEN: | |
3827 | case R_PPC_REL14_BRNTAKEN: | |
3828 | case R_PPC_REL32: | |
3829 | if (h == NULL | |
2b98e6c0 | 3830 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 RH |
3831 | break; |
3832 | /* fall through */ | |
3833 | ||
7619e7c7 AM |
3834 | case R_PPC_ADDR32: |
3835 | case R_PPC_ADDR24: | |
3836 | case R_PPC_ADDR16: | |
3837 | case R_PPC_ADDR16_LO: | |
3838 | case R_PPC_ADDR16_HI: | |
3839 | case R_PPC_ADDR16_HA: | |
3840 | case R_PPC_ADDR14: | |
3841 | case R_PPC_ADDR14_BRTAKEN: | |
3842 | case R_PPC_ADDR14_BRNTAKEN: | |
3843 | case R_PPC_UADDR32: | |
3844 | case R_PPC_UADDR16: | |
3845 | if (h != NULL && !info->shared) | |
3846 | { | |
3847 | /* We may need a plt entry if the symbol turns out to be | |
3848 | a function defined in a dynamic object. */ | |
3849 | h->plt.refcount++; | |
3850 | ||
3851 | /* We may need a copy reloc too. */ | |
f5385ebf | 3852 | h->non_got_ref = 1; |
7619e7c7 | 3853 | } |
ee05f2fe | 3854 | |
7619e7c7 | 3855 | dodyn: |
ee05f2fe AM |
3856 | /* If we are creating a shared library, and this is a reloc |
3857 | against a global symbol, or a non PC relative reloc | |
3858 | against a local symbol, then we need to copy the reloc | |
3859 | into the shared library. However, if we are linking with | |
3860 | -Bsymbolic, we do not need to copy a reloc against a | |
3861 | global symbol which is defined in an object we are | |
3862 | including in the link (i.e., DEF_REGULAR is set). At | |
3863 | this point we have not seen all the input files, so it is | |
3864 | possible that DEF_REGULAR is not set now but will be set | |
3865 | later (it is never cleared). In case of a weak definition, | |
3866 | DEF_REGULAR may be cleared later by a strong definition in | |
3867 | a shared library. We account for that possibility below by | |
3868 | storing information in the dyn_relocs field of the hash | |
3869 | table entry. A similar situation occurs when creating | |
3870 | shared libraries and symbol visibility changes render the | |
3871 | symbol local. | |
3872 | ||
3873 | If on the other hand, we are creating an executable, we | |
3874 | may need to keep relocations for symbols satisfied by a | |
3875 | dynamic library if we manage to avoid copy relocs for the | |
3876 | symbol. */ | |
3877 | if ((info->shared | |
3878 | && (MUST_BE_DYN_RELOC (r_type) | |
3879 | || (h != NULL | |
3880 | && (! info->symbolic | |
3881 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 3882 | || !h->def_regular)))) |
ee05f2fe AM |
3883 | || (ELIMINATE_COPY_RELOCS |
3884 | && !info->shared | |
3885 | && (sec->flags & SEC_ALLOC) != 0 | |
3886 | && h != NULL | |
3887 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 3888 | || !h->def_regular))) |
252b5132 | 3889 | { |
7fce784e AS |
3890 | struct ppc_elf_dyn_relocs *p; |
3891 | struct ppc_elf_dyn_relocs **head; | |
3892 | ||
252b5132 | 3893 | #ifdef DEBUG |
55fd94b0 AM |
3894 | fprintf (stderr, |
3895 | "ppc_elf_check_relocs needs to " | |
3896 | "create relocation for %s\n", | |
70bccea4 AM |
3897 | (h && h->root.root.string |
3898 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
3899 | #endif |
3900 | if (sreloc == NULL) | |
3901 | { | |
3902 | const char *name; | |
3903 | ||
3904 | name = (bfd_elf_string_from_elf_section | |
3905 | (abfd, | |
3906 | elf_elfheader (abfd)->e_shstrndx, | |
3907 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3908 | if (name == NULL) | |
b34976b6 | 3909 | return FALSE; |
252b5132 RH |
3910 | |
3911 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
3912 | && strcmp (bfd_get_section_name (abfd, sec), | |
3913 | name + 5) == 0); | |
3914 | ||
7619e7c7 | 3915 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
3916 | if (sreloc == NULL) |
3917 | { | |
3918 | flagword flags; | |
3919 | ||
7619e7c7 | 3920 | sreloc = bfd_make_section (htab->elf.dynobj, name); |
252b5132 RH |
3921 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
3922 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3923 | if ((sec->flags & SEC_ALLOC) != 0) | |
3924 | flags |= SEC_ALLOC | SEC_LOAD; | |
3925 | if (sreloc == NULL | |
7619e7c7 AM |
3926 | || ! bfd_set_section_flags (htab->elf.dynobj, |
3927 | sreloc, flags) | |
3928 | || ! bfd_set_section_alignment (htab->elf.dynobj, | |
3929 | sreloc, 2)) | |
b34976b6 | 3930 | return FALSE; |
252b5132 | 3931 | } |
7fce784e AS |
3932 | elf_section_data (sec)->sreloc = sreloc; |
3933 | } | |
3934 | ||
3935 | /* If this is a global symbol, we count the number of | |
3936 | relocations we need for this symbol. */ | |
3937 | if (h != NULL) | |
3938 | { | |
3939 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
252b5132 | 3940 | } |
7fce784e AS |
3941 | else |
3942 | { | |
3943 | /* Track dynamic relocs needed for local syms too. | |
3944 | We really need local syms available to do this | |
3945 | easily. Oh well. */ | |
3946 | ||
3947 | asection *s; | |
ee05f2fe AM |
3948 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
3949 | sec, r_symndx); | |
7fce784e AS |
3950 | if (s == NULL) |
3951 | return FALSE; | |
252b5132 | 3952 | |
7fce784e AS |
3953 | head = ((struct ppc_elf_dyn_relocs **) |
3954 | &elf_section_data (s)->local_dynrel); | |
3955 | } | |
252b5132 | 3956 | |
7fce784e AS |
3957 | p = *head; |
3958 | if (p == NULL || p->sec != sec) | |
3959 | { | |
55fd94b0 | 3960 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
7fce784e AS |
3961 | if (p == NULL) |
3962 | return FALSE; | |
3963 | p->next = *head; | |
3964 | *head = p; | |
3965 | p->sec = sec; | |
3966 | p->count = 0; | |
ee05f2fe | 3967 | p->pc_count = 0; |
7fce784e AS |
3968 | } |
3969 | ||
ee05f2fe AM |
3970 | p->count += 1; |
3971 | if (!MUST_BE_DYN_RELOC (r_type)) | |
3972 | p->pc_count += 1; | |
252b5132 RH |
3973 | } |
3974 | ||
3975 | break; | |
3976 | } | |
3977 | } | |
3978 | ||
b34976b6 | 3979 | return TRUE; |
252b5132 RH |
3980 | } |
3981 | ||
3982 | /* Return the section that should be marked against GC for a given | |
3983 | relocation. */ | |
3984 | ||
3985 | static asection * | |
55fd94b0 AM |
3986 | ppc_elf_gc_mark_hook (asection *sec, |
3987 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3988 | Elf_Internal_Rela *rel, | |
3989 | struct elf_link_hash_entry *h, | |
3990 | Elf_Internal_Sym *sym) | |
252b5132 RH |
3991 | { |
3992 | if (h != NULL) | |
3993 | { | |
3994 | switch (ELF32_R_TYPE (rel->r_info)) | |
3995 | { | |
3996 | case R_PPC_GNU_VTINHERIT: | |
3997 | case R_PPC_GNU_VTENTRY: | |
3998 | break; | |
3999 | ||
4000 | default: | |
4001 | switch (h->root.type) | |
4002 | { | |
4003 | case bfd_link_hash_defined: | |
4004 | case bfd_link_hash_defweak: | |
4005 | return h->root.u.def.section; | |
4006 | ||
4007 | case bfd_link_hash_common: | |
4008 | return h->root.u.c.p->section; | |
4009 | ||
4010 | default: | |
4011 | break; | |
4012 | } | |
4013 | } | |
4014 | } | |
4015 | else | |
1e2f5b6e | 4016 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
4017 | |
4018 | return NULL; | |
4019 | } | |
4020 | ||
7619e7c7 AM |
4021 | /* Update the got, plt and dynamic reloc reference counts for the |
4022 | section being removed. */ | |
252b5132 | 4023 | |
b34976b6 | 4024 | static bfd_boolean |
55fd94b0 AM |
4025 | ppc_elf_gc_sweep_hook (bfd *abfd, |
4026 | struct bfd_link_info *info, | |
4027 | asection *sec, | |
4028 | const Elf_Internal_Rela *relocs) | |
252b5132 | 4029 | { |
7619e7c7 | 4030 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
4031 | Elf_Internal_Shdr *symtab_hdr; |
4032 | struct elf_link_hash_entry **sym_hashes; | |
4033 | bfd_signed_vma *local_got_refcounts; | |
4034 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 4035 | |
7fce784e AS |
4036 | elf_section_data (sec)->local_dynrel = NULL; |
4037 | ||
7619e7c7 | 4038 | htab = ppc_elf_hash_table (info); |
252b5132 RH |
4039 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4040 | sym_hashes = elf_sym_hashes (abfd); | |
4041 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
4042 | ||
4043 | relend = relocs + sec->reloc_count; | |
4044 | for (rel = relocs; rel < relend; rel++) | |
7619e7c7 AM |
4045 | { |
4046 | unsigned long r_symndx; | |
4047 | enum elf_ppc_reloc_type r_type; | |
4048 | struct elf_link_hash_entry *h = NULL; | |
252b5132 | 4049 | |
7619e7c7 AM |
4050 | r_symndx = ELF32_R_SYM (rel->r_info); |
4051 | if (r_symndx >= symtab_hdr->sh_info) | |
4052 | { | |
4053 | struct ppc_elf_dyn_relocs **pp, *p; | |
4054 | struct ppc_elf_link_hash_entry *eh; | |
4055 | ||
4056 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
4057 | while (h->root.type == bfd_link_hash_indirect |
4058 | || h->root.type == bfd_link_hash_warning) | |
4059 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 AM |
4060 | eh = (struct ppc_elf_link_hash_entry *) h; |
4061 | ||
4062 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4063 | if (p->sec == sec) | |
4064 | { | |
4065 | /* Everything must go for SEC. */ | |
4066 | *pp = p->next; | |
4067 | break; | |
4068 | } | |
4069 | } | |
4070 | ||
55fd94b0 | 4071 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 AM |
4072 | switch (r_type) |
4073 | { | |
4074 | case R_PPC_GOT_TLSLD16: | |
4075 | case R_PPC_GOT_TLSLD16_LO: | |
4076 | case R_PPC_GOT_TLSLD16_HI: | |
4077 | case R_PPC_GOT_TLSLD16_HA: | |
4078 | htab->tlsld_got.refcount -= 1; | |
4079 | /* Fall thru */ | |
4080 | ||
4081 | case R_PPC_GOT_TLSGD16: | |
4082 | case R_PPC_GOT_TLSGD16_LO: | |
4083 | case R_PPC_GOT_TLSGD16_HI: | |
4084 | case R_PPC_GOT_TLSGD16_HA: | |
4085 | case R_PPC_GOT_TPREL16: | |
4086 | case R_PPC_GOT_TPREL16_LO: | |
4087 | case R_PPC_GOT_TPREL16_HI: | |
4088 | case R_PPC_GOT_TPREL16_HA: | |
4089 | case R_PPC_GOT_DTPREL16: | |
4090 | case R_PPC_GOT_DTPREL16_LO: | |
4091 | case R_PPC_GOT_DTPREL16_HI: | |
4092 | case R_PPC_GOT_DTPREL16_HA: | |
4093 | case R_PPC_GOT16: | |
4094 | case R_PPC_GOT16_LO: | |
4095 | case R_PPC_GOT16_HI: | |
4096 | case R_PPC_GOT16_HA: | |
4097 | if (h != NULL) | |
4098 | { | |
4099 | if (h->got.refcount > 0) | |
4100 | h->got.refcount--; | |
4101 | } | |
4102 | else if (local_got_refcounts != NULL) | |
4103 | { | |
4104 | if (local_got_refcounts[r_symndx] > 0) | |
4105 | local_got_refcounts[r_symndx]--; | |
4106 | } | |
4107 | break; | |
4108 | ||
4109 | case R_PPC_REL24: | |
4110 | case R_PPC_REL14: | |
4111 | case R_PPC_REL14_BRTAKEN: | |
4112 | case R_PPC_REL14_BRNTAKEN: | |
4113 | case R_PPC_REL32: | |
4114 | if (h == NULL | |
2b98e6c0 | 4115 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
7619e7c7 AM |
4116 | break; |
4117 | /* Fall thru */ | |
4118 | ||
4119 | case R_PPC_ADDR32: | |
4120 | case R_PPC_ADDR24: | |
4121 | case R_PPC_ADDR16: | |
4122 | case R_PPC_ADDR16_LO: | |
4123 | case R_PPC_ADDR16_HI: | |
4124 | case R_PPC_ADDR16_HA: | |
4125 | case R_PPC_ADDR14: | |
4126 | case R_PPC_ADDR14_BRTAKEN: | |
4127 | case R_PPC_ADDR14_BRNTAKEN: | |
4128 | case R_PPC_UADDR32: | |
4129 | case R_PPC_UADDR16: | |
4130 | case R_PPC_PLT32: | |
4131 | case R_PPC_PLTREL24: | |
4132 | case R_PPC_PLT16_LO: | |
4133 | case R_PPC_PLT16_HI: | |
4134 | case R_PPC_PLT16_HA: | |
4135 | if (h != NULL) | |
4136 | { | |
4137 | if (h->plt.refcount > 0) | |
4138 | h->plt.refcount--; | |
4139 | } | |
4140 | break; | |
4141 | ||
4142 | default: | |
4143 | break; | |
4144 | } | |
4145 | } | |
4146 | return TRUE; | |
4147 | } | |
4148 | ||
e1918d23 | 4149 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
7619e7c7 | 4150 | |
e1918d23 | 4151 | asection * |
55fd94b0 | 4152 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7619e7c7 | 4153 | { |
7619e7c7 AM |
4154 | struct ppc_elf_link_hash_table *htab; |
4155 | ||
4156 | htab = ppc_elf_hash_table (info); | |
4157 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
4158 | FALSE, FALSE, TRUE); | |
4159 | ||
e1918d23 | 4160 | return _bfd_elf_tls_setup (obfd, info); |
7619e7c7 AM |
4161 | } |
4162 | ||
4163 | /* Run through all the TLS relocs looking for optimization | |
4164 | opportunities. */ | |
4165 | ||
4166 | bfd_boolean | |
55fd94b0 AM |
4167 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, |
4168 | struct bfd_link_info *info) | |
7619e7c7 AM |
4169 | { |
4170 | bfd *ibfd; | |
4171 | asection *sec; | |
4172 | struct ppc_elf_link_hash_table *htab; | |
4173 | ||
1049f94e | 4174 | if (info->relocatable || info->shared) |
7619e7c7 AM |
4175 | return TRUE; |
4176 | ||
4177 | htab = ppc_elf_hash_table (info); | |
4178 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4179 | { | |
4180 | Elf_Internal_Sym *locsyms = NULL; | |
4181 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4182 | ||
4183 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4184 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7fce784e | 4185 | { |
7619e7c7 AM |
4186 | Elf_Internal_Rela *relstart, *rel, *relend; |
4187 | int expecting_tls_get_addr; | |
4188 | ||
4189 | /* Read the relocations. */ | |
55fd94b0 | 4190 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 4191 | info->keep_memory); |
7619e7c7 AM |
4192 | if (relstart == NULL) |
4193 | return FALSE; | |
4194 | ||
4195 | expecting_tls_get_addr = 0; | |
4196 | relend = relstart + sec->reloc_count; | |
4197 | for (rel = relstart; rel < relend; rel++) | |
4198 | { | |
4199 | enum elf_ppc_reloc_type r_type; | |
4200 | unsigned long r_symndx; | |
4201 | struct elf_link_hash_entry *h = NULL; | |
4202 | char *tls_mask; | |
4203 | char tls_set, tls_clear; | |
4204 | bfd_boolean is_local; | |
4205 | ||
4206 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4207 | if (r_symndx >= symtab_hdr->sh_info) | |
4208 | { | |
4209 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4210 | |
7619e7c7 AM |
4211 | sym_hashes = elf_sym_hashes (ibfd); |
4212 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4213 | while (h->root.type == bfd_link_hash_indirect | |
4214 | || h->root.type == bfd_link_hash_warning) | |
4215 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4216 | } | |
7fce784e | 4217 | |
7619e7c7 AM |
4218 | is_local = FALSE; |
4219 | if (h == NULL | |
f5385ebf | 4220 | || !h->def_dynamic) |
7619e7c7 AM |
4221 | is_local = TRUE; |
4222 | ||
55fd94b0 | 4223 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 AM |
4224 | switch (r_type) |
4225 | { | |
4226 | case R_PPC_GOT_TLSLD16: | |
4227 | case R_PPC_GOT_TLSLD16_LO: | |
4228 | case R_PPC_GOT_TLSLD16_HI: | |
4229 | case R_PPC_GOT_TLSLD16_HA: | |
4230 | /* These relocs should never be against a symbol | |
4231 | defined in a shared lib. Leave them alone if | |
4232 | that turns out to be the case. */ | |
4233 | expecting_tls_get_addr = 0; | |
4234 | htab->tlsld_got.refcount -= 1; | |
4235 | if (!is_local) | |
4236 | continue; | |
4237 | ||
4238 | /* LD -> LE */ | |
4239 | tls_set = 0; | |
4240 | tls_clear = TLS_LD; | |
4241 | expecting_tls_get_addr = 1; | |
4242 | break; | |
4243 | ||
4244 | case R_PPC_GOT_TLSGD16: | |
4245 | case R_PPC_GOT_TLSGD16_LO: | |
4246 | case R_PPC_GOT_TLSGD16_HI: | |
4247 | case R_PPC_GOT_TLSGD16_HA: | |
4248 | if (is_local) | |
4249 | /* GD -> LE */ | |
4250 | tls_set = 0; | |
4251 | else | |
4252 | /* GD -> IE */ | |
4253 | tls_set = TLS_TLS | TLS_TPRELGD; | |
4254 | tls_clear = TLS_GD; | |
4255 | expecting_tls_get_addr = 1; | |
4256 | break; | |
4257 | ||
4258 | case R_PPC_GOT_TPREL16: | |
4259 | case R_PPC_GOT_TPREL16_LO: | |
4260 | case R_PPC_GOT_TPREL16_HI: | |
4261 | case R_PPC_GOT_TPREL16_HA: | |
4262 | expecting_tls_get_addr = 0; | |
4263 | if (is_local) | |
4264 | { | |
4265 | /* IE -> LE */ | |
4266 | tls_set = 0; | |
4267 | tls_clear = TLS_TPREL; | |
4268 | break; | |
4269 | } | |
4270 | else | |
4271 | continue; | |
4272 | ||
4273 | case R_PPC_REL14: | |
4274 | case R_PPC_REL14_BRTAKEN: | |
4275 | case R_PPC_REL14_BRNTAKEN: | |
4276 | case R_PPC_REL24: | |
4277 | if (expecting_tls_get_addr | |
4278 | && h != NULL | |
4279 | && h == htab->tls_get_addr) | |
4280 | { | |
4281 | if (h->plt.refcount > 0) | |
4282 | h->plt.refcount -= 1; | |
4283 | } | |
4284 | expecting_tls_get_addr = 0; | |
4285 | continue; | |
4286 | ||
4287 | default: | |
4288 | expecting_tls_get_addr = 0; | |
4289 | continue; | |
4290 | } | |
4291 | ||
4292 | if (h != NULL) | |
4293 | { | |
4294 | if (tls_set == 0) | |
4295 | { | |
4296 | /* We managed to get rid of a got entry. */ | |
4297 | if (h->got.refcount > 0) | |
4298 | h->got.refcount -= 1; | |
4299 | } | |
4300 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4301 | } | |
4302 | else | |
4303 | { | |
4304 | Elf_Internal_Sym *sym; | |
4305 | bfd_signed_vma *lgot_refs; | |
4306 | char *lgot_masks; | |
4307 | ||
4308 | if (locsyms == NULL) | |
4309 | { | |
4310 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4311 | if (locsyms == NULL) | |
4312 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4313 | symtab_hdr->sh_info, | |
4314 | 0, NULL, NULL, NULL); | |
4315 | if (locsyms == NULL) | |
4316 | { | |
4317 | if (elf_section_data (sec)->relocs != relstart) | |
4318 | free (relstart); | |
4319 | return FALSE; | |
4320 | } | |
4321 | } | |
4322 | sym = locsyms + r_symndx; | |
4323 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4324 | if (lgot_refs == NULL) | |
4325 | abort (); | |
4326 | if (tls_set == 0) | |
4327 | { | |
4328 | /* We managed to get rid of a got entry. */ | |
4329 | if (lgot_refs[r_symndx] > 0) | |
4330 | lgot_refs[r_symndx] -= 1; | |
4331 | } | |
4332 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
4333 | tls_mask = &lgot_masks[r_symndx]; | |
4334 | } | |
4335 | ||
4336 | *tls_mask |= tls_set; | |
4337 | *tls_mask &= ~tls_clear; | |
4338 | } | |
4339 | ||
4340 | if (elf_section_data (sec)->relocs != relstart) | |
4341 | free (relstart); | |
7fce784e | 4342 | } |
252b5132 | 4343 | |
7619e7c7 AM |
4344 | if (locsyms != NULL |
4345 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4346 | { | |
4347 | if (!info->keep_memory) | |
4348 | free (locsyms); | |
4349 | else | |
4350 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4351 | } | |
4352 | } | |
b34976b6 | 4353 | return TRUE; |
252b5132 RH |
4354 | } |
4355 | \f | |
4356 | /* Hook called by the linker routine which adds symbols from an object | |
4357 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
4358 | ||
b34976b6 | 4359 | static bfd_boolean |
55fd94b0 AM |
4360 | ppc_elf_add_symbol_hook (bfd *abfd, |
4361 | struct bfd_link_info *info, | |
555cd476 | 4362 | Elf_Internal_Sym *sym, |
55fd94b0 AM |
4363 | const char **namep ATTRIBUTE_UNUSED, |
4364 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4365 | asection **secp, | |
4366 | bfd_vma *valp) | |
252b5132 RH |
4367 | { |
4368 | if (sym->st_shndx == SHN_COMMON | |
1049f94e | 4369 | && !info->relocatable |
27242387 | 4370 | && sym->st_size <= elf_gp_size (abfd) |
58111eb7 AM |
4371 | && (info->hash->creator == abfd->xvec |
4372 | || info->hash->creator == abfd->xvec->alternative_target)) | |
252b5132 RH |
4373 | { |
4374 | /* Common symbols less than or equal to -G nn bytes are automatically | |
58111eb7 AM |
4375 | put into .sbss. */ |
4376 | struct ppc_elf_link_hash_table *htab; | |
252b5132 | 4377 | |
58111eb7 AM |
4378 | htab = ppc_elf_hash_table (info); |
4379 | if (htab->sbss == NULL) | |
252b5132 | 4380 | { |
58111eb7 | 4381 | flagword flags = SEC_IS_COMMON; |
dc810e39 | 4382 | |
58111eb7 AM |
4383 | htab->sbss = bfd_make_section_anyway (abfd, ".sbss"); |
4384 | if (htab->sbss == NULL | |
4385 | || ! bfd_set_section_flags (abfd, htab->sbss, flags)) | |
b34976b6 | 4386 | return FALSE; |
252b5132 RH |
4387 | } |
4388 | ||
58111eb7 | 4389 | *secp = htab->sbss; |
252b5132 RH |
4390 | *valp = sym->st_size; |
4391 | } | |
4392 | ||
b34976b6 | 4393 | return TRUE; |
252b5132 | 4394 | } |
252b5132 RH |
4395 | \f |
4396 | /* Finish up dynamic symbol handling. We set the contents of various | |
4397 | dynamic sections here. */ | |
4398 | ||
b34976b6 | 4399 | static bfd_boolean |
55fd94b0 AM |
4400 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
4401 | struct bfd_link_info *info, | |
4402 | struct elf_link_hash_entry *h, | |
4403 | Elf_Internal_Sym *sym) | |
252b5132 | 4404 | { |
7619e7c7 | 4405 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
4406 | |
4407 | #ifdef DEBUG | |
4408 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
4409 | h->root.root.string); | |
4410 | #endif | |
4411 | ||
7619e7c7 AM |
4412 | htab = ppc_elf_hash_table (info); |
4413 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 RH |
4414 | |
4415 | if (h->plt.offset != (bfd_vma) -1) | |
4416 | { | |
252b5132 | 4417 | Elf_Internal_Rela rela; |
947216bf | 4418 | bfd_byte *loc; |
252b5132 RH |
4419 | bfd_vma reloc_index; |
4420 | ||
4421 | #ifdef DEBUG | |
4422 | fprintf (stderr, ", plt_offset = %d", h->plt.offset); | |
4423 | #endif | |
4424 | ||
4425 | /* This symbol has an entry in the procedure linkage table. Set | |
70bccea4 | 4426 | it up. */ |
252b5132 RH |
4427 | |
4428 | BFD_ASSERT (h->dynindx != -1); | |
7619e7c7 | 4429 | BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL); |
252b5132 RH |
4430 | |
4431 | /* We don't need to fill in the .plt. The ppc dynamic linker | |
4432 | will fill it in. */ | |
4433 | ||
4434 | /* Fill in the entry in the .rela.plt section. */ | |
7619e7c7 AM |
4435 | rela.r_offset = (htab->plt->output_section->vma |
4436 | + htab->plt->output_offset | |
252b5132 RH |
4437 | + h->plt.offset); |
4438 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
4439 | rela.r_addend = 0; | |
4440 | ||
4441 | reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE; | |
4442 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES) | |
4443 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; | |
7619e7c7 AM |
4444 | loc = (htab->relplt->contents |
4445 | + reloc_index * sizeof (Elf32_External_Rela)); | |
947216bf | 4446 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
252b5132 | 4447 | |
f5385ebf | 4448 | if (!h->def_regular) |
252b5132 RH |
4449 | { |
4450 | /* Mark the symbol as undefined, rather than as defined in | |
4451 | the .plt section. Leave the value alone. */ | |
4452 | sym->st_shndx = SHN_UNDEF; | |
a4b120e1 GK |
4453 | /* If the symbol is weak, we do need to clear the value. |
4454 | Otherwise, the PLT entry would provide a definition for | |
4455 | the symbol even if the symbol wasn't defined anywhere, | |
4456 | and so the symbol would never be NULL. */ | |
f5385ebf | 4457 | if (!h->ref_regular_nonweak) |
a4b120e1 | 4458 | sym->st_value = 0; |
252b5132 RH |
4459 | } |
4460 | } | |
4461 | ||
f5385ebf | 4462 | if (h->needs_copy) |
252b5132 RH |
4463 | { |
4464 | asection *s; | |
4465 | Elf_Internal_Rela rela; | |
947216bf | 4466 | bfd_byte *loc; |
252b5132 RH |
4467 | |
4468 | /* This symbols needs a copy reloc. Set it up. */ | |
4469 | ||
4470 | #ifdef DEBUG | |
4471 | fprintf (stderr, ", copy"); | |
4472 | #endif | |
4473 | ||
4474 | BFD_ASSERT (h->dynindx != -1); | |
4475 | ||
7619e7c7 AM |
4476 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
4477 | s = htab->relsbss; | |
252b5132 | 4478 | else |
7619e7c7 | 4479 | s = htab->relbss; |
252b5132 RH |
4480 | BFD_ASSERT (s != NULL); |
4481 | ||
4482 | rela.r_offset = (h->root.u.def.value | |
4483 | + h->root.u.def.section->output_section->vma | |
4484 | + h->root.u.def.section->output_offset); | |
4485 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
4486 | rela.r_addend = 0; | |
947216bf AM |
4487 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4488 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4489 | } |
4490 | ||
4491 | #ifdef DEBUG | |
4492 | fprintf (stderr, "\n"); | |
4493 | #endif | |
4494 | ||
4495 | /* Mark some specially defined symbols as absolute. */ | |
4496 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4497 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4498 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4499 | sym->st_shndx = SHN_ABS; | |
4500 | ||
b34976b6 | 4501 | return TRUE; |
252b5132 | 4502 | } |
252b5132 RH |
4503 | \f |
4504 | /* Finish up the dynamic sections. */ | |
4505 | ||
b34976b6 | 4506 | static bfd_boolean |
55fd94b0 AM |
4507 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, |
4508 | struct bfd_link_info *info) | |
252b5132 RH |
4509 | { |
4510 | asection *sdyn; | |
7619e7c7 | 4511 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
4512 | |
4513 | #ifdef DEBUG | |
4514 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
4515 | #endif | |
4516 | ||
7619e7c7 AM |
4517 | htab = ppc_elf_hash_table (info); |
4518 | sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic"); | |
252b5132 | 4519 | |
7619e7c7 | 4520 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4521 | { |
252b5132 RH |
4522 | Elf32_External_Dyn *dyncon, *dynconend; |
4523 | ||
7619e7c7 | 4524 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
252b5132 RH |
4525 | |
4526 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4527 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4528 | for (; dyncon < dynconend; dyncon++) |
4529 | { | |
4530 | Elf_Internal_Dyn dyn; | |
7619e7c7 | 4531 | asection *s; |
252b5132 | 4532 | |
7619e7c7 | 4533 | bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn); |
252b5132 RH |
4534 | |
4535 | switch (dyn.d_tag) | |
4536 | { | |
7619e7c7 AM |
4537 | case DT_PLTGOT: |
4538 | s = htab->plt; | |
4539 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4540 | break; | |
252b5132 | 4541 | |
7619e7c7 | 4542 | case DT_PLTRELSZ: |
eea6121a | 4543 | dyn.d_un.d_val = htab->relplt->size; |
7619e7c7 | 4544 | break; |
252b5132 | 4545 | |
7619e7c7 AM |
4546 | case DT_JMPREL: |
4547 | s = htab->relplt; | |
4548 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4549 | break; | |
4550 | ||
4551 | default: | |
4552 | continue; | |
252b5132 | 4553 | } |
7619e7c7 AM |
4554 | |
4555 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4556 | } |
4557 | } | |
4558 | ||
4559 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can | |
4560 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
7619e7c7 | 4561 | if (htab->got) |
252b5132 | 4562 | { |
7619e7c7 | 4563 | unsigned char *contents = htab->got->contents; |
55fd94b0 | 4564 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); |
252b5132 RH |
4565 | |
4566 | if (sdyn == NULL) | |
55fd94b0 | 4567 | bfd_put_32 (output_bfd, 0, contents + 4); |
252b5132 RH |
4568 | else |
4569 | bfd_put_32 (output_bfd, | |
4570 | sdyn->output_section->vma + sdyn->output_offset, | |
7619e7c7 | 4571 | contents + 4); |
252b5132 | 4572 | |
7619e7c7 | 4573 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; |
252b5132 RH |
4574 | } |
4575 | ||
b34976b6 | 4576 | return TRUE; |
252b5132 | 4577 | } |
252b5132 RH |
4578 | \f |
4579 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
4580 | to handle the relocations for a section. | |
4581 | ||
4582 | The relocs are always passed as Rela structures; if the section | |
4583 | actually uses Rel structures, the r_addend field will always be | |
4584 | zero. | |
4585 | ||
4586 | This function is responsible for adjust the section contents as | |
4587 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 4588 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
4589 | necessary. |
4590 | ||
4591 | This function does not have to worry about setting the reloc | |
4592 | address or the reloc symbol index. | |
4593 | ||
4594 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4595 | ||
4596 | LOCAL_SECTIONS is an array giving the section in the input file | |
4597 | corresponding to the st_shndx field of each local symbol. | |
4598 | ||
4599 | The global hash table entry for the global symbols can be found | |
4600 | via elf_sym_hashes (input_bfd). | |
4601 | ||
1049f94e | 4602 | When generating relocatable output, this function must handle |
252b5132 RH |
4603 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
4604 | going to be the section symbol corresponding to the output | |
4605 | section, which means that the addend must be adjusted | |
4606 | accordingly. */ | |
4607 | ||
b34976b6 | 4608 | static bfd_boolean |
55fd94b0 AM |
4609 | ppc_elf_relocate_section (bfd *output_bfd, |
4610 | struct bfd_link_info *info, | |
4611 | bfd *input_bfd, | |
4612 | asection *input_section, | |
4613 | bfd_byte *contents, | |
4614 | Elf_Internal_Rela *relocs, | |
4615 | Elf_Internal_Sym *local_syms, | |
4616 | asection **local_sections) | |
252b5132 | 4617 | { |
7619e7c7 AM |
4618 | Elf_Internal_Shdr *symtab_hdr; |
4619 | struct elf_link_hash_entry **sym_hashes; | |
4620 | struct ppc_elf_link_hash_table *htab; | |
4621 | Elf_Internal_Rela *rel; | |
4622 | Elf_Internal_Rela *relend; | |
4623 | Elf_Internal_Rela outrel; | |
4624 | bfd_byte *loc; | |
b34976b6 | 4625 | asection *sreloc = NULL; |
252b5132 | 4626 | bfd_vma *local_got_offsets; |
b34976b6 | 4627 | bfd_boolean ret = TRUE; |
b34976b6 | 4628 | |
252b5132 | 4629 | #ifdef DEBUG |
d003868e AM |
4630 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
4631 | "%ld relocations%s", | |
4632 | input_bfd, input_section, | |
4633 | (long) input_section->reloc_count, | |
4634 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
4635 | #endif |
4636 | ||
1049f94e | 4637 | if (info->relocatable) |
b34976b6 | 4638 | return TRUE; |
b491616a | 4639 | |
e47cd125 | 4640 | /* Initialize howto table if not already done. */ |
8da6118f | 4641 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
4642 | ppc_elf_howto_init (); |
4643 | ||
7619e7c7 | 4644 | htab = ppc_elf_hash_table (info); |
252b5132 | 4645 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
4646 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4647 | sym_hashes = elf_sym_hashes (input_bfd); | |
4648 | rel = relocs; | |
4649 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
4650 | for (; rel < relend; rel++) |
4651 | { | |
7619e7c7 AM |
4652 | enum elf_ppc_reloc_type r_type; |
4653 | bfd_vma addend; | |
4654 | bfd_reloc_status_type r; | |
4655 | Elf_Internal_Sym *sym; | |
4656 | asection *sec; | |
4657 | struct elf_link_hash_entry *h; | |
4658 | const char *sym_name; | |
252b5132 RH |
4659 | reloc_howto_type *howto; |
4660 | unsigned long r_symndx; | |
4661 | bfd_vma relocation; | |
7619e7c7 | 4662 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
4663 | bfd_boolean unresolved_reloc; |
4664 | bfd_boolean warned; | |
4665 | unsigned int tls_type, tls_mask, tls_gd; | |
4666 | ||
55fd94b0 AM |
4667 | r_type = ELF32_R_TYPE (rel->r_info); |
4668 | sym = NULL; | |
4669 | sec = NULL; | |
4670 | h = NULL; | |
7619e7c7 AM |
4671 | unresolved_reloc = FALSE; |
4672 | warned = FALSE; | |
252b5132 | 4673 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 4674 | |
252b5132 RH |
4675 | if (r_symndx < symtab_hdr->sh_info) |
4676 | { | |
4677 | sym = local_syms + r_symndx; | |
4678 | sec = local_sections[r_symndx]; | |
be8dd2ca | 4679 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym); |
252b5132 | 4680 | |
8517fae7 | 4681 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
4682 | } |
4683 | else | |
4684 | { | |
b2a8e766 AM |
4685 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
4686 | r_symndx, symtab_hdr, sym_hashes, | |
4687 | h, sec, relocation, | |
4688 | unresolved_reloc, warned); | |
9abc968f | 4689 | |
252b5132 | 4690 | sym_name = h->root.root.string; |
7619e7c7 AM |
4691 | } |
4692 | ||
4693 | /* TLS optimizations. Replace instruction sequences and relocs | |
4694 | based on information we collected in tls_optimize. We edit | |
4695 | RELOCS so that --emit-relocs will output something sensible | |
4696 | for the final instruction stream. */ | |
4697 | tls_mask = 0; | |
4698 | tls_gd = 0; | |
4699 | if (IS_PPC_TLS_RELOC (r_type)) | |
4700 | { | |
4701 | if (h != NULL) | |
4702 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
4703 | else if (local_got_offsets != NULL) | |
4704 | { | |
4705 | char *lgot_masks; | |
4706 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
4707 | tls_mask = lgot_masks[r_symndx]; | |
4708 | } | |
4709 | } | |
4710 | ||
4711 | /* Ensure reloc mapping code below stays sane. */ | |
4712 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
4713 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
4714 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
4715 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
4716 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
4717 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
4718 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
4719 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
4720 | abort (); | |
4721 | switch (r_type) | |
4722 | { | |
4723 | default: | |
4724 | break; | |
4725 | ||
4726 | case R_PPC_GOT_TPREL16: | |
4727 | case R_PPC_GOT_TPREL16_LO: | |
4728 | if (tls_mask != 0 | |
4729 | && (tls_mask & TLS_TPREL) == 0) | |
4730 | { | |
4731 | bfd_vma insn; | |
4732 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); | |
4733 | insn &= 31 << 21; | |
4734 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4735 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
4736 | r_type = R_PPC_TPREL16_HA; | |
4737 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4738 | } | |
4739 | break; | |
4740 | ||
4741 | case R_PPC_TLS: | |
4742 | if (tls_mask != 0 | |
4743 | && (tls_mask & TLS_TPREL) == 0) | |
4744 | { | |
4745 | bfd_vma insn, rtra; | |
4746 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4747 | if ((insn & ((31 << 26) | (31 << 11))) | |
4748 | == ((31 << 26) | (2 << 11))) | |
4749 | rtra = insn & ((1 << 26) - (1 << 16)); | |
4750 | else if ((insn & ((31 << 26) | (31 << 16))) | |
4751 | == ((31 << 26) | (2 << 16))) | |
4752 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
4753 | else | |
4754 | abort (); | |
4755 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
4756 | /* add -> addi. */ | |
4757 | insn = 14 << 26; | |
4758 | else if ((insn & (31 << 1)) == 23 << 1 | |
4759 | && ((insn & (31 << 6)) < 14 << 6 | |
4760 | || ((insn & (31 << 6)) >= 16 << 6 | |
4761 | && (insn & (31 << 6)) < 24 << 6))) | |
4762 | /* load and store indexed -> dform. */ | |
4763 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
4764 | else if ((insn & (31 << 1)) == 21 << 1 | |
4765 | && (insn & (0x1a << 6)) == 0) | |
4766 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
4767 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
4768 | | ((insn >> 6) & 1)); | |
4769 | else if ((insn & (31 << 1)) == 21 << 1 | |
4770 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
4771 | /* lwax -> lwa. */ | |
4772 | insn = (58 << 26) | 2; | |
4773 | else | |
4774 | abort (); | |
4775 | insn |= rtra; | |
4776 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
4777 | r_type = R_PPC_TPREL16_LO; | |
4778 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4779 | /* Was PPC_TLS which sits on insn boundary, now | |
4780 | PPC_TPREL16_LO which is at insn+2. */ | |
4781 | rel->r_offset += 2; | |
4782 | } | |
4783 | break; | |
4784 | ||
4785 | case R_PPC_GOT_TLSGD16_HI: | |
4786 | case R_PPC_GOT_TLSGD16_HA: | |
4787 | tls_gd = TLS_TPRELGD; | |
4788 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4789 | goto tls_gdld_hi; | |
4790 | break; | |
4791 | ||
4792 | case R_PPC_GOT_TLSLD16_HI: | |
4793 | case R_PPC_GOT_TLSLD16_HA: | |
4794 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4795 | { | |
4796 | tls_gdld_hi: | |
4797 | if ((tls_mask & tls_gd) != 0) | |
4798 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4799 | + R_PPC_GOT_TPREL16); | |
4800 | else | |
4801 | { | |
4802 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4803 | rel->r_offset -= 2; | |
4804 | r_type = R_PPC_NONE; | |
4805 | } | |
4806 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4807 | } | |
4808 | break; | |
4809 | ||
4810 | case R_PPC_GOT_TLSGD16: | |
4811 | case R_PPC_GOT_TLSGD16_LO: | |
4812 | tls_gd = TLS_TPRELGD; | |
4813 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4814 | goto tls_get_addr_check; | |
4815 | break; | |
4816 | ||
4817 | case R_PPC_GOT_TLSLD16: | |
4818 | case R_PPC_GOT_TLSLD16_LO: | |
4819 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4820 | { | |
4821 | tls_get_addr_check: | |
4822 | if (rel + 1 < relend) | |
4823 | { | |
4824 | enum elf_ppc_reloc_type r_type2; | |
4825 | unsigned long r_symndx2; | |
4826 | struct elf_link_hash_entry *h2; | |
87d243f1 | 4827 | bfd_vma insn1, insn2; |
7619e7c7 AM |
4828 | bfd_vma offset; |
4829 | ||
4830 | /* The next instruction should be a call to | |
4831 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 4832 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
4833 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
4834 | if (r_symndx2 < symtab_hdr->sh_info | |
4835 | || (r_type2 != R_PPC_REL14 | |
4836 | && r_type2 != R_PPC_REL14_BRTAKEN | |
4837 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
4838 | && r_type2 != R_PPC_REL24 | |
4839 | && r_type2 != R_PPC_PLTREL24)) | |
4840 | break; | |
4841 | ||
4842 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
4843 | while (h2->root.type == bfd_link_hash_indirect | |
4844 | || h2->root.type == bfd_link_hash_warning) | |
4845 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
4846 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
4847 | break; | |
4848 | ||
4849 | /* OK, it checks out. Replace the call. */ | |
4850 | offset = rel[1].r_offset; | |
4851 | insn1 = bfd_get_32 (output_bfd, | |
4852 | contents + rel->r_offset - 2); | |
7619e7c7 AM |
4853 | if ((tls_mask & tls_gd) != 0) |
4854 | { | |
4855 | /* IE */ | |
4856 | insn1 &= (1 << 26) - 1; | |
4857 | insn1 |= 32 << 26; /* lwz */ | |
4858 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
4859 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
4860 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4861 | + R_PPC_GOT_TPREL16); | |
4862 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4863 | } | |
4864 | else | |
4865 | { | |
4866 | /* LE */ | |
4867 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
4868 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
4869 | if (tls_gd == 0) | |
4870 | { | |
4871 | /* Was an LD reloc. */ | |
4872 | r_symndx = 0; | |
e1918d23 AM |
4873 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
4874 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
4875 | } |
4876 | r_type = R_PPC_TPREL16_HA; | |
4877 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4878 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
4879 | R_PPC_TPREL16_LO); | |
4880 | rel[1].r_offset += 2; | |
4881 | } | |
7619e7c7 AM |
4882 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); |
4883 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7619e7c7 AM |
4884 | if (tls_gd == 0) |
4885 | { | |
4886 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 4887 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
4888 | rel--; |
4889 | continue; | |
4890 | } | |
4891 | } | |
252b5132 | 4892 | } |
7619e7c7 AM |
4893 | break; |
4894 | } | |
4895 | ||
4896 | /* Handle other relocations that tweak non-addend part of insn. */ | |
4897 | branch_bit = 0; | |
4898 | switch (r_type) | |
4899 | { | |
4900 | default: | |
4901 | break; | |
4902 | ||
4903 | /* Branch taken prediction relocations. */ | |
4904 | case R_PPC_ADDR14_BRTAKEN: | |
4905 | case R_PPC_REL14_BRTAKEN: | |
4906 | branch_bit = BRANCH_PREDICT_BIT; | |
4907 | /* Fall thru */ | |
4908 | ||
4cc11e76 | 4909 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
4910 | case R_PPC_ADDR14_BRNTAKEN: |
4911 | case R_PPC_REL14_BRNTAKEN: | |
4912 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4913 | insn &= ~BRANCH_PREDICT_BIT; | |
4914 | insn |= branch_bit; | |
4915 | ||
4916 | from = (rel->r_offset | |
4917 | + input_section->output_offset | |
4918 | + input_section->output_section->vma); | |
4919 | ||
4920 | /* Invert 'y' bit if not the default. */ | |
4921 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
4922 | insn ^= BRANCH_PREDICT_BIT; | |
4923 | ||
4924 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
4925 | break; | |
252b5132 RH |
4926 | } |
4927 | ||
7619e7c7 AM |
4928 | addend = rel->r_addend; |
4929 | tls_type = 0; | |
4930 | howto = NULL; | |
55fd94b0 AM |
4931 | if (r_type < R_PPC_max) |
4932 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 4933 | switch (r_type) |
252b5132 RH |
4934 | { |
4935 | default: | |
7619e7c7 | 4936 | (*_bfd_error_handler) |
d003868e AM |
4937 | (_("%B: unknown relocation type %d for symbol %s"), |
4938 | input_bfd, (int) r_type, sym_name); | |
252b5132 RH |
4939 | |
4940 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4941 | ret = FALSE; |
252b5132 RH |
4942 | continue; |
4943 | ||
7619e7c7 AM |
4944 | case R_PPC_NONE: |
4945 | case R_PPC_TLS: | |
4946 | case R_PPC_EMB_MRKREF: | |
4947 | case R_PPC_GNU_VTINHERIT: | |
4948 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
4949 | continue; |
4950 | ||
7619e7c7 AM |
4951 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
4952 | address in the GOT as relocation value instead of the | |
4953 | symbol's value itself. Also, create a GOT entry for the | |
4954 | symbol and put the symbol value there. */ | |
4955 | case R_PPC_GOT_TLSGD16: | |
4956 | case R_PPC_GOT_TLSGD16_LO: | |
4957 | case R_PPC_GOT_TLSGD16_HI: | |
4958 | case R_PPC_GOT_TLSGD16_HA: | |
4959 | tls_type = TLS_TLS | TLS_GD; | |
4960 | goto dogot; | |
4961 | ||
4962 | case R_PPC_GOT_TLSLD16: | |
4963 | case R_PPC_GOT_TLSLD16_LO: | |
4964 | case R_PPC_GOT_TLSLD16_HI: | |
4965 | case R_PPC_GOT_TLSLD16_HA: | |
4966 | tls_type = TLS_TLS | TLS_LD; | |
4967 | goto dogot; | |
4968 | ||
4969 | case R_PPC_GOT_TPREL16: | |
4970 | case R_PPC_GOT_TPREL16_LO: | |
4971 | case R_PPC_GOT_TPREL16_HI: | |
4972 | case R_PPC_GOT_TPREL16_HA: | |
4973 | tls_type = TLS_TLS | TLS_TPREL; | |
4974 | goto dogot; | |
4975 | ||
4976 | case R_PPC_GOT_DTPREL16: | |
4977 | case R_PPC_GOT_DTPREL16_LO: | |
4978 | case R_PPC_GOT_DTPREL16_HI: | |
4979 | case R_PPC_GOT_DTPREL16_HA: | |
4980 | tls_type = TLS_TLS | TLS_DTPREL; | |
4981 | goto dogot; | |
4982 | ||
4983 | case R_PPC_GOT16: | |
4984 | case R_PPC_GOT16_LO: | |
4985 | case R_PPC_GOT16_HI: | |
4986 | case R_PPC_GOT16_HA: | |
4987 | dogot: | |
4988 | { | |
4989 | /* Relocation is to the entry for this symbol in the global | |
4990 | offset table. */ | |
4991 | bfd_vma off; | |
4992 | bfd_vma *offp; | |
4993 | unsigned long indx; | |
4994 | ||
4995 | if (htab->got == NULL) | |
4996 | abort (); | |
4997 | ||
4998 | indx = 0; | |
4999 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 5000 | && (h == NULL |
f5385ebf | 5001 | || !h->def_dynamic)) |
7619e7c7 AM |
5002 | offp = &htab->tlsld_got.offset; |
5003 | else if (h != NULL) | |
5004 | { | |
5005 | bfd_boolean dyn; | |
5006 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 5007 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
5008 | || (info->shared |
5009 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
5010 | /* This is actually a static link, or it is a | |
5011 | -Bsymbolic link and the symbol is defined | |
5012 | locally, or the symbol was forced to be local | |
5013 | because of a version file. */ | |
5014 | ; | |
5015 | else | |
5016 | { | |
5017 | indx = h->dynindx; | |
5018 | unresolved_reloc = FALSE; | |
5019 | } | |
5020 | offp = &h->got.offset; | |
5021 | } | |
5022 | else | |
5023 | { | |
5024 | if (local_got_offsets == NULL) | |
5025 | abort (); | |
5026 | offp = &local_got_offsets[r_symndx]; | |
5027 | } | |
5028 | ||
5029 | /* The offset must always be a multiple of 4. We use the | |
5030 | least significant bit to record whether we have already | |
5031 | processed this entry. */ | |
5032 | off = *offp; | |
5033 | if ((off & 1) != 0) | |
5034 | off &= ~1; | |
5035 | else | |
5036 | { | |
70bccea4 AM |
5037 | unsigned int tls_m = (tls_mask |
5038 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
5039 | | TLS_TPREL | TLS_TPRELGD)); | |
5040 | ||
5041 | if (offp == &htab->tlsld_got.offset) | |
5042 | tls_m = TLS_LD; | |
5043 | else if (h == NULL | |
f5385ebf | 5044 | || !h->def_dynamic) |
70bccea4 AM |
5045 | tls_m &= ~TLS_LD; |
5046 | ||
5047 | /* We might have multiple got entries for this sym. | |
5048 | Initialize them all. */ | |
5049 | do | |
7619e7c7 | 5050 | { |
70bccea4 AM |
5051 | int tls_ty = 0; |
5052 | ||
5053 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 5054 | { |
70bccea4 AM |
5055 | tls_ty = TLS_TLS | TLS_LD; |
5056 | tls_m &= ~TLS_LD; | |
5057 | } | |
5058 | else if ((tls_m & TLS_GD) != 0) | |
5059 | { | |
5060 | tls_ty = TLS_TLS | TLS_GD; | |
5061 | tls_m &= ~TLS_GD; | |
5062 | } | |
5063 | else if ((tls_m & TLS_DTPREL) != 0) | |
5064 | { | |
5065 | tls_ty = TLS_TLS | TLS_DTPREL; | |
5066 | tls_m &= ~TLS_DTPREL; | |
5067 | } | |
5068 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5069 | { | |
5070 | tls_ty = TLS_TLS | TLS_TPREL; | |
5071 | tls_m = 0; | |
7619e7c7 | 5072 | } |
7619e7c7 | 5073 | |
70bccea4 | 5074 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
5075 | if ((info->shared || indx != 0) |
5076 | && (h == NULL | |
5077 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5078 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 5079 | { |
70bccea4 AM |
5080 | outrel.r_offset = (htab->got->output_section->vma |
5081 | + htab->got->output_offset | |
5082 | + off); | |
e515b051 | 5083 | outrel.r_addend = 0; |
70bccea4 AM |
5084 | if (tls_ty & (TLS_LD | TLS_GD)) |
5085 | { | |
5086 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
5087 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5088 | { | |
5089 | loc = htab->relgot->contents; | |
5090 | loc += (htab->relgot->reloc_count++ | |
5091 | * sizeof (Elf32_External_Rela)); | |
5092 | bfd_elf32_swap_reloca_out (output_bfd, | |
5093 | &outrel, loc); | |
e515b051 | 5094 | outrel.r_offset += 4; |
70bccea4 AM |
5095 | outrel.r_info |
5096 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
5097 | } |
5098 | } | |
5099 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
5100 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
5101 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
5102 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
5103 | else if (indx == 0) | |
5104 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
5105 | else | |
5106 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 5107 | if (indx == 0) |
e515b051 AM |
5108 | { |
5109 | outrel.r_addend += relocation; | |
5110 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 5111 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 5112 | } |
70bccea4 AM |
5113 | loc = htab->relgot->contents; |
5114 | loc += (htab->relgot->reloc_count++ | |
5115 | * sizeof (Elf32_External_Rela)); | |
5116 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
5117 | } |
5118 | ||
70bccea4 AM |
5119 | /* Init the .got section contents if we're not |
5120 | emitting a reloc. */ | |
5121 | else | |
7619e7c7 | 5122 | { |
70bccea4 AM |
5123 | bfd_vma value = relocation; |
5124 | ||
7b609f53 AM |
5125 | if (tls_ty == (TLS_TLS | TLS_LD)) |
5126 | value = 1; | |
5127 | else if (tls_ty != 0) | |
70bccea4 | 5128 | { |
e1918d23 | 5129 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 5130 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 5131 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 5132 | |
7b609f53 AM |
5133 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5134 | { | |
5135 | bfd_put_32 (output_bfd, value, | |
5136 | htab->got->contents + off + 4); | |
5137 | value = 1; | |
5138 | } | |
70bccea4 | 5139 | } |
70bccea4 AM |
5140 | bfd_put_32 (output_bfd, value, |
5141 | htab->got->contents + off); | |
7619e7c7 | 5142 | } |
70bccea4 AM |
5143 | |
5144 | off += 4; | |
5145 | if (tls_ty & (TLS_LD | TLS_GD)) | |
5146 | off += 4; | |
7619e7c7 | 5147 | } |
70bccea4 AM |
5148 | while (tls_m != 0); |
5149 | ||
5150 | off = *offp; | |
5151 | *offp = off | 1; | |
7619e7c7 AM |
5152 | } |
5153 | ||
5154 | if (off >= (bfd_vma) -2) | |
5155 | abort (); | |
5156 | ||
70bccea4 AM |
5157 | if ((tls_type & TLS_TLS) != 0) |
5158 | { | |
5159 | if (tls_type != (TLS_TLS | TLS_LD)) | |
5160 | { | |
5161 | if ((tls_mask & TLS_LD) != 0 | |
5162 | && !(h == NULL | |
f5385ebf | 5163 | || !h->def_dynamic)) |
70bccea4 AM |
5164 | off += 8; |
5165 | if (tls_type != (TLS_TLS | TLS_GD)) | |
5166 | { | |
5167 | if ((tls_mask & TLS_GD) != 0) | |
5168 | off += 8; | |
5169 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
5170 | { | |
5171 | if ((tls_mask & TLS_DTPREL) != 0) | |
5172 | off += 4; | |
5173 | } | |
5174 | } | |
5175 | } | |
5176 | } | |
5177 | ||
7619e7c7 AM |
5178 | relocation = htab->got->output_offset + off - 4; |
5179 | ||
5180 | /* Addends on got relocations don't make much sense. | |
5181 | x+off@got is actually x@got+off, and since the got is | |
5182 | generated by a hash table traversal, the value in the | |
5183 | got at entry m+n bears little relation to the entry m. */ | |
5184 | if (addend != 0) | |
5185 | (*_bfd_error_handler) | |
d003868e AM |
5186 | (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"), |
5187 | input_bfd, | |
5188 | input_section, | |
7619e7c7 | 5189 | (long) rel->r_offset, |
7b609f53 | 5190 | howto->name, |
7619e7c7 AM |
5191 | sym_name); |
5192 | } | |
70bccea4 | 5193 | break; |
7619e7c7 | 5194 | |
252b5132 | 5195 | /* Relocations that need no special processing. */ |
7619e7c7 | 5196 | case R_PPC_LOCAL24PC: |
252b5132 RH |
5197 | /* It makes no sense to point a local relocation |
5198 | at a symbol not in this object. */ | |
7b609f53 | 5199 | if (unresolved_reloc) |
252b5132 | 5200 | { |
464e1740 ILT |
5201 | if (! (*info->callbacks->undefined_symbol) (info, |
5202 | h->root.root.string, | |
5203 | input_bfd, | |
5204 | input_section, | |
5cc7c785 | 5205 | rel->r_offset, |
b34976b6 AM |
5206 | TRUE)) |
5207 | return FALSE; | |
252b5132 RH |
5208 | continue; |
5209 | } | |
5210 | break; | |
5211 | ||
7619e7c7 AM |
5212 | case R_PPC_DTPREL16: |
5213 | case R_PPC_DTPREL16_LO: | |
5214 | case R_PPC_DTPREL16_HI: | |
5215 | case R_PPC_DTPREL16_HA: | |
e1918d23 | 5216 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5217 | break; |
5218 | ||
70bccea4 AM |
5219 | /* Relocations that may need to be propagated if this is a shared |
5220 | object. */ | |
7619e7c7 AM |
5221 | case R_PPC_TPREL16: |
5222 | case R_PPC_TPREL16_LO: | |
5223 | case R_PPC_TPREL16_HI: | |
5224 | case R_PPC_TPREL16_HA: | |
e1918d23 | 5225 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
5226 | /* The TPREL16 relocs shouldn't really be used in shared |
5227 | libs as they will result in DT_TEXTREL being set, but | |
5228 | support them anyway. */ | |
5229 | goto dodyn; | |
5230 | ||
5231 | case R_PPC_TPREL32: | |
e1918d23 | 5232 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
7619e7c7 AM |
5233 | goto dodyn; |
5234 | ||
5235 | case R_PPC_DTPREL32: | |
e1918d23 | 5236 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7619e7c7 AM |
5237 | goto dodyn; |
5238 | ||
e515b051 AM |
5239 | case R_PPC_DTPMOD32: |
5240 | relocation = 1; | |
5241 | addend = 0; | |
5242 | goto dodyn; | |
5243 | ||
7619e7c7 AM |
5244 | case R_PPC_REL24: |
5245 | case R_PPC_REL32: | |
5246 | case R_PPC_REL14: | |
5247 | case R_PPC_REL14_BRTAKEN: | |
5248 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
5249 | /* If these relocations are not to a named symbol, they can be |
5250 | handled right here, no need to bother the dynamic linker. */ | |
f6c52c13 AM |
5251 | if (SYMBOL_REFERENCES_LOCAL (info, h) |
5252 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 5253 | break; |
70bccea4 | 5254 | /* fall through */ |
252b5132 | 5255 | |
70bccea4 AM |
5256 | /* Relocations that always need to be propagated if this is a shared |
5257 | object. */ | |
7619e7c7 AM |
5258 | case R_PPC_ADDR32: |
5259 | case R_PPC_ADDR24: | |
5260 | case R_PPC_ADDR16: | |
5261 | case R_PPC_ADDR16_LO: | |
5262 | case R_PPC_ADDR16_HI: | |
5263 | case R_PPC_ADDR16_HA: | |
5264 | case R_PPC_ADDR14: | |
5265 | case R_PPC_ADDR14_BRTAKEN: | |
5266 | case R_PPC_ADDR14_BRNTAKEN: | |
5267 | case R_PPC_UADDR32: | |
5268 | case R_PPC_UADDR16: | |
ee05f2fe AM |
5269 | /* r_symndx will be zero only for relocs against symbols |
5270 | from removed linkonce sections, or sections discarded by | |
5271 | a linker script. */ | |
7619e7c7 | 5272 | dodyn: |
ee05f2fe AM |
5273 | if (r_symndx == 0) |
5274 | break; | |
5275 | /* Fall thru. */ | |
5276 | ||
5277 | if ((info->shared | |
4e795f50 AM |
5278 | && (h == NULL |
5279 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5280 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe | 5281 | && (MUST_BE_DYN_RELOC (r_type) |
f6c52c13 | 5282 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
5283 | || (ELIMINATE_COPY_RELOCS |
5284 | && !info->shared | |
5285 | && (input_section->flags & SEC_ALLOC) != 0 | |
5286 | && h != NULL | |
5287 | && h->dynindx != -1 | |
f5385ebf AM |
5288 | && !h->non_got_ref |
5289 | && h->def_dynamic | |
5290 | && !h->def_regular)) | |
252b5132 | 5291 | { |
0bb2d96a | 5292 | int skip; |
252b5132 RH |
5293 | |
5294 | #ifdef DEBUG | |
55fd94b0 AM |
5295 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
5296 | "create relocation for %s\n", | |
70bccea4 AM |
5297 | (h && h->root.root.string |
5298 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
5299 | #endif |
5300 | ||
5301 | /* When generating a shared object, these relocations | |
70bccea4 AM |
5302 | are copied into the output file to be resolved at run |
5303 | time. */ | |
252b5132 RH |
5304 | if (sreloc == NULL) |
5305 | { | |
5306 | const char *name; | |
5307 | ||
5308 | name = (bfd_elf_string_from_elf_section | |
5309 | (input_bfd, | |
5310 | elf_elfheader (input_bfd)->e_shstrndx, | |
5311 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
5312 | if (name == NULL) | |
b34976b6 | 5313 | return FALSE; |
252b5132 RH |
5314 | |
5315 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
5316 | && strcmp (bfd_get_section_name (input_bfd, | |
5317 | input_section), | |
5318 | name + 5) == 0); | |
5319 | ||
7619e7c7 | 5320 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
5321 | BFD_ASSERT (sreloc != NULL); |
5322 | } | |
5323 | ||
0bb2d96a | 5324 | skip = 0; |
252b5132 | 5325 | |
c629eae0 JJ |
5326 | outrel.r_offset = |
5327 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5328 | rel->r_offset); | |
0bb2d96a JJ |
5329 | if (outrel.r_offset == (bfd_vma) -1 |
5330 | || outrel.r_offset == (bfd_vma) -2) | |
5331 | skip = (int) outrel.r_offset; | |
252b5132 RH |
5332 | outrel.r_offset += (input_section->output_section->vma |
5333 | + input_section->output_offset); | |
5334 | ||
5335 | if (skip) | |
5336 | memset (&outrel, 0, sizeof outrel); | |
f6c52c13 | 5337 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 5338 | { |
7619e7c7 | 5339 | unresolved_reloc = FALSE; |
252b5132 RH |
5340 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
5341 | outrel.r_addend = rel->r_addend; | |
5342 | } | |
5343 | else | |
5344 | { | |
47388f4c AM |
5345 | outrel.r_addend = relocation + rel->r_addend; |
5346 | ||
252b5132 | 5347 | if (r_type == R_PPC_ADDR32) |
47388f4c | 5348 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
5349 | else |
5350 | { | |
5351 | long indx; | |
5352 | ||
47388f4c | 5353 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
5354 | indx = 0; |
5355 | else if (sec == NULL || sec->owner == NULL) | |
5356 | { | |
5357 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5358 | return FALSE; |
252b5132 RH |
5359 | } |
5360 | else | |
5361 | { | |
5362 | asection *osec; | |
5363 | ||
47388f4c AM |
5364 | /* We are turning this relocation into one |
5365 | against a section symbol. It would be | |
5366 | proper to subtract the symbol's value, | |
5367 | osec->vma, from the emitted reloc addend, | |
5368 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
5369 | osec = sec->output_section; |
5370 | indx = elf_section_data (osec)->dynindx; | |
8da6118f | 5371 | BFD_ASSERT (indx > 0); |
252b5132 RH |
5372 | #ifdef DEBUG |
5373 | if (indx <= 0) | |
55fd94b0 AM |
5374 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
5375 | indx, osec->name, osec->flags, | |
5376 | h->root.root.string); | |
252b5132 RH |
5377 | #endif |
5378 | } | |
5379 | ||
5380 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
5381 | } |
5382 | } | |
5383 | ||
947216bf AM |
5384 | loc = sreloc->contents; |
5385 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
5386 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 5387 | |
2243deae | 5388 | if (skip == -1) |
252b5132 | 5389 | continue; |
2243deae L |
5390 | |
5391 | /* This reloc will be computed at runtime. We clear the memory | |
5392 | so that it contains predictable value. */ | |
5393 | if (! skip | |
5394 | && ((input_section->flags & SEC_ALLOC) != 0 | |
5395 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
5396 | { | |
5397 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
5398 | addend = 0; | |
5399 | break; | |
5400 | } | |
252b5132 | 5401 | } |
252b5132 RH |
5402 | break; |
5403 | ||
b4a38de6 AM |
5404 | case R_PPC_RELAX32PC_PLT: |
5405 | case R_PPC_RELAX32_PLT: | |
5406 | BFD_ASSERT (h != NULL | |
5407 | && h->plt.offset != (bfd_vma) -1 | |
5408 | && htab->plt != NULL); | |
5409 | ||
5410 | relocation = (htab->plt->output_section->vma | |
5411 | + htab->plt->output_offset | |
5412 | + h->plt.offset); | |
5413 | if (r_type == R_PPC_RELAX32_PLT) | |
5414 | goto relax32; | |
5415 | /* Fall thru */ | |
5416 | ||
f31a141e AM |
5417 | case R_PPC_RELAX32PC: |
5418 | relocation -= (input_section->output_section->vma | |
5419 | + input_section->output_offset | |
5420 | + rel->r_offset - 4); | |
5421 | /* Fall thru */ | |
b4a38de6 | 5422 | |
deaaf2f3 | 5423 | case R_PPC_RELAX32: |
b4a38de6 | 5424 | relax32: |
9abc968f AM |
5425 | { |
5426 | unsigned long t0; | |
5427 | unsigned long t1; | |
5428 | ||
5429 | t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
5430 | t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); | |
5431 | ||
5432 | /* We're clearing the bits for R_PPC_ADDR16_HA | |
5433 | and R_PPC_ADDR16_LO here. */ | |
5434 | t0 &= ~0xffff; | |
5435 | t1 &= ~0xffff; | |
5436 | ||
5437 | /* t0 is HA, t1 is LO */ | |
5438 | relocation += addend; | |
5439 | t0 |= ((relocation + 0x8000) >> 16) & 0xffff; | |
5440 | t1 |= relocation & 0xffff; | |
5441 | ||
5442 | bfd_put_32 (output_bfd, t0, contents + rel->r_offset); | |
5443 | bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); | |
5444 | } | |
8517fae7 | 5445 | continue; |
deaaf2f3 | 5446 | |
70bccea4 | 5447 | /* Indirect .sdata relocation. */ |
7619e7c7 AM |
5448 | case R_PPC_EMB_SDAI16: |
5449 | BFD_ASSERT (htab->sdata != NULL); | |
5450 | relocation | |
3dab13f6 AM |
5451 | = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, |
5452 | htab->sdata, h, relocation, | |
5453 | rel, R_PPC_RELATIVE); | |
252b5132 RH |
5454 | break; |
5455 | ||
70bccea4 | 5456 | /* Indirect .sdata2 relocation. */ |
7619e7c7 AM |
5457 | case R_PPC_EMB_SDA2I16: |
5458 | BFD_ASSERT (htab->sdata2 != NULL); | |
5459 | relocation | |
3dab13f6 AM |
5460 | = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, |
5461 | htab->sdata2, h, relocation, | |
5462 | rel, R_PPC_RELATIVE); | |
252b5132 RH |
5463 | break; |
5464 | ||
70bccea4 AM |
5465 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
5466 | section, not the actual VMA. This is appropriate when generating | |
5467 | an embedded ELF object, for which the .got section acts like the | |
5468 | AIX .toc section. */ | |
7619e7c7 | 5469 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 5470 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
5471 | BFD_ASSERT (bfd_is_und_section (sec) |
5472 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
f12123c0 | 5473 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); |
252b5132 | 5474 | |
70bccea4 | 5475 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
5476 | break; |
5477 | ||
7619e7c7 | 5478 | case R_PPC_PLTREL24: |
252b5132 | 5479 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 5480 | procedure linkage table. */ |
252b5132 RH |
5481 | BFD_ASSERT (h != NULL); |
5482 | ||
5483 | if (h->plt.offset == (bfd_vma) -1 | |
7619e7c7 | 5484 | || htab->plt == NULL) |
252b5132 RH |
5485 | { |
5486 | /* We didn't make a PLT entry for this symbol. This | |
70bccea4 AM |
5487 | happens when statically linking PIC code, or when |
5488 | using -Bsymbolic. */ | |
252b5132 RH |
5489 | break; |
5490 | } | |
5491 | ||
7619e7c7 AM |
5492 | unresolved_reloc = FALSE; |
5493 | relocation = (htab->plt->output_section->vma | |
5494 | + htab->plt->output_offset | |
252b5132 | 5495 | + h->plt.offset); |
8da6118f | 5496 | break; |
252b5132 | 5497 | |
70bccea4 | 5498 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 5499 | case R_PPC_SDAREL16: |
252b5132 RH |
5500 | { |
5501 | const char *name; | |
7619e7c7 | 5502 | const struct elf_link_hash_entry *sh; |
252b5132 | 5503 | |
55fd94b0 | 5504 | BFD_ASSERT (sec != NULL); |
252b5132 | 5505 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5506 | if (! ((strncmp (name, ".sdata", 6) == 0 |
5507 | && (name[6] == 0 || name[6] == '.')) | |
5508 | || (strncmp (name, ".sbss", 5) == 0 | |
5509 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 | 5510 | { |
55fd94b0 | 5511 | (*_bfd_error_handler) |
d003868e | 5512 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5513 | "in the wrong output section (%s)"), |
d003868e | 5514 | input_bfd, |
55fd94b0 AM |
5515 | sym_name, |
5516 | howto->name, | |
5517 | name); | |
252b5132 | 5518 | } |
7619e7c7 AM |
5519 | sh = htab->sdata->sym_hash; |
5520 | addend -= (sh->root.u.def.value | |
5521 | + sh->root.u.def.section->output_section->vma | |
5522 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5523 | } |
5524 | break; | |
5525 | ||
70bccea4 | 5526 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 5527 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
5528 | { |
5529 | const char *name; | |
7619e7c7 | 5530 | const struct elf_link_hash_entry *sh; |
252b5132 | 5531 | |
55fd94b0 | 5532 | BFD_ASSERT (sec != NULL); |
252b5132 | 5533 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5534 | if (! (strncmp (name, ".sdata2", 7) == 0 |
5535 | || strncmp (name, ".sbss2", 6) == 0)) | |
252b5132 | 5536 | { |
55fd94b0 | 5537 | (*_bfd_error_handler) |
d003868e | 5538 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5539 | "in the wrong output section (%s)"), |
d003868e | 5540 | input_bfd, |
55fd94b0 AM |
5541 | sym_name, |
5542 | howto->name, | |
5543 | name); | |
c3668558 | 5544 | |
252b5132 | 5545 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5546 | ret = FALSE; |
252b5132 RH |
5547 | continue; |
5548 | } | |
7619e7c7 AM |
5549 | sh = htab->sdata2->sym_hash; |
5550 | addend -= (sh->root.u.def.value | |
5551 | + sh->root.u.def.section->output_section->vma | |
5552 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5553 | } |
5554 | break; | |
5555 | ||
70bccea4 | 5556 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
5557 | case R_PPC_EMB_SDA21: |
5558 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
5559 | { |
5560 | const char *name; | |
7619e7c7 | 5561 | const struct elf_link_hash_entry *sh; |
252b5132 RH |
5562 | int reg; |
5563 | ||
55fd94b0 | 5564 | BFD_ASSERT (sec != NULL); |
252b5132 | 5565 | name = bfd_get_section_name (abfd, sec->output_section); |
b34976b6 | 5566 | if (((strncmp (name, ".sdata", 6) == 0 |
5f819128 AM |
5567 | && (name[6] == 0 || name[6] == '.')) |
5568 | || (strncmp (name, ".sbss", 5) == 0 | |
5569 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 RH |
5570 | { |
5571 | reg = 13; | |
7619e7c7 AM |
5572 | sh = htab->sdata->sym_hash; |
5573 | addend -= (sh->root.u.def.value | |
5574 | + sh->root.u.def.section->output_section->vma | |
5575 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5576 | } |
5577 | ||
5f819128 AM |
5578 | else if (strncmp (name, ".sdata2", 7) == 0 |
5579 | || strncmp (name, ".sbss2", 6) == 0) | |
252b5132 RH |
5580 | { |
5581 | reg = 2; | |
7619e7c7 AM |
5582 | sh = htab->sdata2->sym_hash; |
5583 | addend -= (sh->root.u.def.value | |
5584 | + sh->root.u.def.section->output_section->vma | |
5585 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5586 | } |
5587 | ||
8da6118f KH |
5588 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
5589 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
5590 | { |
5591 | reg = 0; | |
5592 | } | |
5593 | ||
5594 | else | |
5595 | { | |
55fd94b0 | 5596 | (*_bfd_error_handler) |
d003868e | 5597 | (_("%B: the target (%s) of a %s relocation is " |
55fd94b0 | 5598 | "in the wrong output section (%s)"), |
d003868e | 5599 | input_bfd, |
55fd94b0 AM |
5600 | sym_name, |
5601 | howto->name, | |
5602 | name); | |
252b5132 RH |
5603 | |
5604 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5605 | ret = FALSE; |
252b5132 RH |
5606 | continue; |
5607 | } | |
5608 | ||
5609 | if (r_type == R_PPC_EMB_SDA21) | |
5610 | { /* fill in register field */ | |
7619e7c7 | 5611 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 5612 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 5613 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
5614 | } |
5615 | } | |
5616 | break; | |
5617 | ||
70bccea4 | 5618 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
5619 | case R_PPC_SECTOFF: |
5620 | case R_PPC_SECTOFF_LO: | |
5621 | case R_PPC_SECTOFF_HI: | |
5622 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 5623 | BFD_ASSERT (sec != NULL); |
252b5132 | 5624 | addend -= sec->output_section->vma; |
252b5132 RH |
5625 | break; |
5626 | ||
70bccea4 | 5627 | /* Negative relocations. */ |
7619e7c7 AM |
5628 | case R_PPC_EMB_NADDR32: |
5629 | case R_PPC_EMB_NADDR16: | |
5630 | case R_PPC_EMB_NADDR16_LO: | |
5631 | case R_PPC_EMB_NADDR16_HI: | |
5632 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 5633 | addend -= 2 * relocation; |
252b5132 RH |
5634 | break; |
5635 | ||
7619e7c7 AM |
5636 | case R_PPC_COPY: |
5637 | case R_PPC_GLOB_DAT: | |
5638 | case R_PPC_JMP_SLOT: | |
5639 | case R_PPC_RELATIVE: | |
5640 | case R_PPC_PLT32: | |
5641 | case R_PPC_PLTREL32: | |
5642 | case R_PPC_PLT16_LO: | |
5643 | case R_PPC_PLT16_HI: | |
5644 | case R_PPC_PLT16_HA: | |
5645 | case R_PPC_ADDR30: | |
5646 | case R_PPC_EMB_RELSEC16: | |
5647 | case R_PPC_EMB_RELST_LO: | |
5648 | case R_PPC_EMB_RELST_HI: | |
5649 | case R_PPC_EMB_RELST_HA: | |
5650 | case R_PPC_EMB_BIT_FLD: | |
5651 | (*_bfd_error_handler) | |
d003868e AM |
5652 | (_("%B: relocation %s is not yet supported for symbol %s."), |
5653 | input_bfd, | |
7619e7c7 AM |
5654 | howto->name, |
5655 | sym_name); | |
252b5132 RH |
5656 | |
5657 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 5658 | ret = FALSE; |
252b5132 | 5659 | continue; |
7619e7c7 | 5660 | } |
252b5132 | 5661 | |
7619e7c7 AM |
5662 | /* Do any further special processing. */ |
5663 | switch (r_type) | |
5664 | { | |
5665 | default: | |
5666 | break; | |
5667 | ||
5668 | case R_PPC_ADDR16_HA: | |
5669 | case R_PPC_GOT16_HA: | |
5670 | case R_PPC_PLT16_HA: | |
5671 | case R_PPC_SECTOFF_HA: | |
5672 | case R_PPC_TPREL16_HA: | |
5673 | case R_PPC_DTPREL16_HA: | |
5674 | case R_PPC_GOT_TLSGD16_HA: | |
5675 | case R_PPC_GOT_TLSLD16_HA: | |
5676 | case R_PPC_GOT_TPREL16_HA: | |
5677 | case R_PPC_GOT_DTPREL16_HA: | |
5678 | case R_PPC_EMB_NADDR16_HA: | |
5679 | case R_PPC_EMB_RELST_HA: | |
5680 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 5681 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
5682 | 'sec' would be NULL, and we should leave the symbol |
5683 | alone (it will be set to zero elsewhere in the link). */ | |
5684 | if (sec != NULL) | |
e515b051 AM |
5685 | /* Add 0x10000 if sign bit in 0:15 is set. |
5686 | Bits 0:15 are not used. */ | |
5687 | addend += 0x8000; | |
7619e7c7 | 5688 | break; |
252b5132 RH |
5689 | } |
5690 | ||
252b5132 | 5691 | #ifdef DEBUG |
55fd94b0 AM |
5692 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
5693 | "offset = %ld, addend = %ld\n", | |
252b5132 | 5694 | howto->name, |
8da6118f | 5695 | (int) r_type, |
252b5132 RH |
5696 | sym_name, |
5697 | r_symndx, | |
7619e7c7 | 5698 | (long) rel->r_offset, |
8da6118f | 5699 | (long) addend); |
252b5132 RH |
5700 | #endif |
5701 | ||
7619e7c7 AM |
5702 | if (unresolved_reloc |
5703 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 5704 | && h->def_dynamic)) |
7619e7c7 AM |
5705 | { |
5706 | (*_bfd_error_handler) | |
d003868e AM |
5707 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
5708 | input_bfd, | |
5709 | input_section, | |
7619e7c7 | 5710 | (long) rel->r_offset, |
7b609f53 | 5711 | howto->name, |
7619e7c7 AM |
5712 | sym_name); |
5713 | ret = FALSE; | |
5714 | } | |
5715 | ||
252b5132 RH |
5716 | r = _bfd_final_link_relocate (howto, |
5717 | input_bfd, | |
5718 | input_section, | |
5719 | contents, | |
7619e7c7 | 5720 | rel->r_offset, |
252b5132 RH |
5721 | relocation, |
5722 | addend); | |
5723 | ||
7619e7c7 | 5724 | if (r != bfd_reloc_ok) |
252b5132 | 5725 | { |
7619e7c7 AM |
5726 | if (sym_name == NULL) |
5727 | sym_name = "(null)"; | |
5728 | if (r == bfd_reloc_overflow) | |
252b5132 | 5729 | { |
7619e7c7 AM |
5730 | if (warned) |
5731 | continue; | |
5732 | if (h != NULL | |
5733 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
5734 | && howto->pc_relative) |
5735 | { | |
5736 | /* Assume this is a call protected by other code that | |
5737 | detect the symbol is undefined. If this is the case, | |
5738 | we can safely ignore the overflow. If not, the | |
5739 | program is hosed anyway, and a little warning isn't | |
5740 | going to help. */ | |
252b5132 | 5741 | |
dc1bc0c9 RH |
5742 | continue; |
5743 | } | |
252b5132 | 5744 | |
7619e7c7 | 5745 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 5746 | (h ? &h->root : NULL), |
7619e7c7 AM |
5747 | sym_name, |
5748 | howto->name, | |
5749 | rel->r_addend, | |
5750 | input_bfd, | |
5751 | input_section, | |
5752 | rel->r_offset)) | |
5753 | return FALSE; | |
dc1bc0c9 RH |
5754 | } |
5755 | else | |
5756 | { | |
7619e7c7 | 5757 | (*_bfd_error_handler) |
d003868e AM |
5758 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
5759 | input_bfd, input_section, | |
7b609f53 | 5760 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 5761 | ret = FALSE; |
252b5132 RH |
5762 | } |
5763 | } | |
5764 | } | |
5765 | ||
252b5132 RH |
5766 | #ifdef DEBUG |
5767 | fprintf (stderr, "\n"); | |
5768 | #endif | |
5769 | ||
5770 | return ret; | |
5771 | } | |
29c2fb7c AJ |
5772 | |
5773 | static enum elf_reloc_type_class | |
55fd94b0 | 5774 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
29c2fb7c | 5775 | { |
55fd94b0 | 5776 | switch (ELF32_R_TYPE (rela->r_info)) |
29c2fb7c AJ |
5777 | { |
5778 | case R_PPC_RELATIVE: | |
5779 | return reloc_class_relative; | |
5780 | case R_PPC_REL24: | |
5781 | case R_PPC_ADDR24: | |
5782 | case R_PPC_JMP_SLOT: | |
5783 | return reloc_class_plt; | |
5784 | case R_PPC_COPY: | |
5785 | return reloc_class_copy; | |
5786 | default: | |
5787 | return reloc_class_normal; | |
5788 | } | |
5789 | } | |
252b5132 | 5790 | \f |
ae9a127f NC |
5791 | /* Support for core dump NOTE sections. */ |
5792 | ||
b34976b6 | 5793 | static bfd_boolean |
55fd94b0 | 5794 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
c5fccbec DJ |
5795 | { |
5796 | int offset; | |
eea6121a | 5797 | unsigned int size; |
c5fccbec DJ |
5798 | |
5799 | switch (note->descsz) | |
5800 | { | |
70bccea4 AM |
5801 | default: |
5802 | return FALSE; | |
c5fccbec | 5803 | |
70bccea4 AM |
5804 | case 268: /* Linux/PPC. */ |
5805 | /* pr_cursig */ | |
5806 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
c5fccbec | 5807 | |
70bccea4 AM |
5808 | /* pr_pid */ |
5809 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
c5fccbec | 5810 | |
70bccea4 AM |
5811 | /* pr_reg */ |
5812 | offset = 72; | |
eea6121a | 5813 | size = 192; |
c5fccbec | 5814 | |
70bccea4 | 5815 | break; |
c5fccbec DJ |
5816 | } |
5817 | ||
5818 | /* Make a ".reg/999" section. */ | |
5819 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 5820 | size, note->descpos + offset); |
c5fccbec DJ |
5821 | } |
5822 | ||
b34976b6 | 5823 | static bfd_boolean |
55fd94b0 | 5824 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
c5fccbec DJ |
5825 | { |
5826 | switch (note->descsz) | |
5827 | { | |
70bccea4 AM |
5828 | default: |
5829 | return FALSE; | |
c5fccbec | 5830 | |
70bccea4 AM |
5831 | case 128: /* Linux/PPC elf_prpsinfo. */ |
5832 | elf_tdata (abfd)->core_program | |
5833 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
5834 | elf_tdata (abfd)->core_command | |
5835 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
c5fccbec DJ |
5836 | } |
5837 | ||
5838 | /* Note that for some reason, a spurious space is tacked | |
5839 | onto the end of the args in some (at least one anyway) | |
5840 | implementations, so strip it off if it exists. */ | |
5841 | ||
5842 | { | |
5843 | char *command = elf_tdata (abfd)->core_command; | |
5844 | int n = strlen (command); | |
5845 | ||
5846 | if (0 < n && command[n - 1] == ' ') | |
5847 | command[n - 1] = '\0'; | |
5848 | } | |
5849 | ||
b34976b6 | 5850 | return TRUE; |
c5fccbec DJ |
5851 | } |
5852 | \f | |
e1a9cb8e NC |
5853 | /* Very simple linked list structure for recording apuinfo values. */ |
5854 | typedef struct apuinfo_list | |
5855 | { | |
70bccea4 AM |
5856 | struct apuinfo_list *next; |
5857 | unsigned long value; | |
e1a9cb8e NC |
5858 | } |
5859 | apuinfo_list; | |
5860 | ||
55fd94b0 | 5861 | static apuinfo_list *head; |
e1a9cb8e NC |
5862 | |
5863 | ||
e1a9cb8e | 5864 | static void |
55fd94b0 | 5865 | apuinfo_list_init (void) |
e1a9cb8e NC |
5866 | { |
5867 | head = NULL; | |
5868 | } | |
5869 | ||
5870 | static void | |
55fd94b0 | 5871 | apuinfo_list_add (unsigned long value) |
e1a9cb8e | 5872 | { |
70bccea4 | 5873 | apuinfo_list *entry = head; |
e1a9cb8e NC |
5874 | |
5875 | while (entry != NULL) | |
5876 | { | |
5877 | if (entry->value == value) | |
5878 | return; | |
5879 | entry = entry->next; | |
5880 | } | |
5881 | ||
5882 | entry = bfd_malloc (sizeof (* entry)); | |
5883 | if (entry == NULL) | |
5884 | return; | |
5885 | ||
5886 | entry->value = value; | |
5887 | entry->next = head; | |
5888 | head = entry; | |
5889 | } | |
5890 | ||
5891 | static unsigned | |
55fd94b0 | 5892 | apuinfo_list_length (void) |
e1a9cb8e | 5893 | { |
70bccea4 | 5894 | apuinfo_list *entry; |
e1a9cb8e NC |
5895 | unsigned long count; |
5896 | ||
5897 | for (entry = head, count = 0; | |
5898 | entry; | |
5899 | entry = entry->next) | |
5900 | ++ count; | |
5901 | ||
5902 | return count; | |
5903 | } | |
5904 | ||
5905 | static inline unsigned long | |
55fd94b0 | 5906 | apuinfo_list_element (unsigned long number) |
e1a9cb8e NC |
5907 | { |
5908 | apuinfo_list * entry; | |
5909 | ||
5910 | for (entry = head; | |
5911 | entry && number --; | |
5912 | entry = entry->next) | |
5913 | ; | |
5914 | ||
5915 | return entry ? entry->value : 0; | |
5916 | } | |
5917 | ||
5918 | static void | |
55fd94b0 | 5919 | apuinfo_list_finish (void) |
e1a9cb8e | 5920 | { |
70bccea4 | 5921 | apuinfo_list *entry; |
e1a9cb8e NC |
5922 | |
5923 | for (entry = head; entry;) | |
5924 | { | |
70bccea4 | 5925 | apuinfo_list *next = entry->next; |
e1a9cb8e NC |
5926 | free (entry); |
5927 | entry = next; | |
5928 | } | |
5929 | ||
5930 | head = NULL; | |
5931 | } | |
5932 | ||
70bccea4 AM |
5933 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
5934 | #define APUINFO_LABEL "APUinfo" | |
e1a9cb8e NC |
5935 | |
5936 | /* Scan the input BFDs and create a linked list of | |
5937 | the APUinfo values that will need to be emitted. */ | |
5938 | ||
55fd94b0 AM |
5939 | static void |
5940 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
e1a9cb8e | 5941 | { |
70bccea4 AM |
5942 | bfd *ibfd; |
5943 | asection *asec; | |
5944 | char *buffer; | |
5945 | unsigned num_input_sections; | |
e1a9cb8e | 5946 | bfd_size_type output_section_size; |
70bccea4 AM |
5947 | unsigned i; |
5948 | unsigned num_entries; | |
e1a9cb8e NC |
5949 | unsigned long offset; |
5950 | unsigned long length; | |
70bccea4 | 5951 | const char *error_message = NULL; |
e1a9cb8e | 5952 | |
6b0817e5 NC |
5953 | if (link_info == NULL) |
5954 | return; | |
5955 | ||
e1a9cb8e NC |
5956 | /* Scan the input bfds, looking for apuinfo sections. */ |
5957 | num_input_sections = 0; | |
5958 | output_section_size = 0; | |
5959 | ||
5960 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
5961 | { | |
5962 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); | |
5963 | if (asec) | |
5964 | { | |
5965 | ++ num_input_sections; | |
eea6121a | 5966 | output_section_size += asec->size; |
e1a9cb8e NC |
5967 | } |
5968 | } | |
5969 | ||
5970 | /* We need at least one input sections | |
5971 | in order to make merging worthwhile. */ | |
5972 | if (num_input_sections < 1) | |
5973 | return; | |
5974 | ||
5975 | /* Just make sure that the output section exists as well. */ | |
5976 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
5977 | if (asec == NULL) | |
5978 | return; | |
5979 | ||
5980 | /* Allocate a buffer for the contents of the input sections. */ | |
5981 | buffer = bfd_malloc (output_section_size); | |
5982 | if (buffer == NULL) | |
5983 | return; | |
5984 | ||
5985 | offset = 0; | |
5986 | apuinfo_list_init (); | |
5987 | ||
5988 | /* Read in the input sections contents. */ | |
5989 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
5990 | { | |
70bccea4 AM |
5991 | unsigned long datum; |
5992 | char *ptr; | |
86bbe32f | 5993 | |
e1a9cb8e NC |
5994 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
5995 | if (asec == NULL) | |
5996 | continue; | |
5997 | ||
eea6121a | 5998 | length = asec->size; |
e1a9cb8e NC |
5999 | if (length < 24) |
6000 | { | |
d003868e | 6001 | error_message = _("corrupt or empty %s section in %B"); |
e1a9cb8e NC |
6002 | goto fail; |
6003 | } | |
86bbe32f | 6004 | |
e1a9cb8e NC |
6005 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
6006 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
6007 | { | |
d003868e | 6008 | error_message = _("unable to read in %s section from %B"); |
e1a9cb8e NC |
6009 | goto fail; |
6010 | } | |
6011 | ||
6012 | /* Process the contents of the section. */ | |
6013 | ptr = buffer + offset; | |
d003868e | 6014 | error_message = _("corrupt %s section in %B"); |
e1a9cb8e NC |
6015 | |
6016 | /* Verify the contents of the header. Note - we have to | |
6017 | extract the values this way in order to allow for a | |
6018 | host whose endian-ness is different from the target. */ | |
6019 | datum = bfd_get_32 (ibfd, ptr); | |
6020 | if (datum != sizeof APUINFO_LABEL) | |
6021 | goto fail; | |
6022 | ||
6023 | datum = bfd_get_32 (ibfd, ptr + 8); | |
6024 | if (datum != 0x2) | |
6025 | goto fail; | |
6026 | ||
6027 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) | |
6028 | goto fail; | |
6029 | ||
88810f8c | 6030 | /* Get the number of bytes used for apuinfo entries. */ |
e1a9cb8e | 6031 | datum = bfd_get_32 (ibfd, ptr + 4); |
88810f8c | 6032 | if (datum + 20 != length) |
e1a9cb8e NC |
6033 | goto fail; |
6034 | ||
6035 | /* Make sure that we do not run off the end of the section. */ | |
6036 | if (offset + length > output_section_size) | |
6037 | goto fail; | |
6038 | ||
6039 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
88810f8c MM |
6040 | for (i = 0; i < datum; i += 4) |
6041 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
e1a9cb8e NC |
6042 | |
6043 | /* Update the offset. */ | |
6044 | offset += length; | |
6045 | } | |
6046 | ||
6047 | error_message = NULL; | |
6048 | ||
6049 | /* Compute the size of the output section. */ | |
6050 | num_entries = apuinfo_list_length (); | |
6051 | output_section_size = 20 + num_entries * 4; | |
6052 | ||
6053 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
6054 | ||
70bccea4 | 6055 | if (! bfd_set_section_size (abfd, asec, output_section_size)) |
e1a9cb8e | 6056 | ibfd = abfd, |
d003868e | 6057 | error_message = _("warning: unable to set size of %s section in %B"); |
86bbe32f | 6058 | |
e1a9cb8e NC |
6059 | fail: |
6060 | free (buffer); | |
6061 | ||
6062 | if (error_message) | |
d003868e | 6063 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); |
e1a9cb8e NC |
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 | ||
55fd94b0 AM |
6070 | static bfd_boolean |
6071 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
6072 | asection *asec, | |
6073 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
e1a9cb8e | 6074 | { |
70bccea4 AM |
6075 | return (apuinfo_list_length () |
6076 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
e1a9cb8e NC |
6077 | } |
6078 | ||
6079 | ||
6080 | /* Finally we can generate the output section. */ | |
6081 | ||
55fd94b0 AM |
6082 | static void |
6083 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
e1a9cb8e | 6084 | { |
70bccea4 AM |
6085 | bfd_byte *buffer; |
6086 | asection *asec; | |
6087 | unsigned i; | |
6088 | unsigned num_entries; | |
e1a9cb8e NC |
6089 | bfd_size_type length; |
6090 | ||
6091 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
6092 | if (asec == NULL) | |
6093 | return; | |
6094 | ||
6b0817e5 NC |
6095 | if (apuinfo_list_length () == 0) |
6096 | return; | |
6097 | ||
eea6121a | 6098 | length = asec->size; |
e1a9cb8e NC |
6099 | if (length < 20) |
6100 | return; | |
6101 | ||
6102 | buffer = bfd_malloc (length); | |
6103 | if (buffer == NULL) | |
6104 | { | |
70bccea4 AM |
6105 | (*_bfd_error_handler) |
6106 | (_("failed to allocate space for new APUinfo section.")); | |
e1a9cb8e NC |
6107 | return; |
6108 | } | |
6109 | ||
6110 | /* Create the apuinfo header. */ | |
6111 | num_entries = apuinfo_list_length (); | |
6112 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
88810f8c | 6113 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); |
e1a9cb8e | 6114 | bfd_put_32 (abfd, 0x2, buffer + 8); |
f075ee0c | 6115 | strcpy ((char *) buffer + 12, APUINFO_LABEL); |
86bbe32f | 6116 | |
e1a9cb8e NC |
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 | ||
eea6121a | 6124 | if (length != asec->size) |
70bccea4 | 6125 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); |
86bbe32f | 6126 | |
e1a9cb8e | 6127 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
70bccea4 | 6128 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); |
86bbe32f | 6129 | |
e1a9cb8e NC |
6130 | free (buffer); |
6131 | ||
6132 | apuinfo_list_finish (); | |
6133 | } | |
2f89ff8d | 6134 | |
4c45e5c9 JJ |
6135 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
6136 | or (bfd_vma) -1 if it should not be included. */ | |
6137 | ||
6138 | static bfd_vma | |
6139 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
6140 | const asection *plt ATTRIBUTE_UNUSED, | |
6141 | const arelent *rel) | |
6142 | { | |
6143 | return rel->address; | |
6144 | } | |
6145 | ||
2f89ff8d L |
6146 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
6147 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
6148 | that the linker doesn't crater when trying to make more than | |
6149 | 2 sections. */ | |
6150 | ||
6151 | static struct bfd_elf_special_section const ppc_elf_special_sections[]= | |
6152 | { | |
7dcb9820 AM |
6153 | { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC }, |
6154 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
6155 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
6156 | { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
6157 | { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC }, | |
6158 | { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 }, | |
6159 | { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC }, | |
6160 | { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC }, | |
6161 | { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
6162 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d | 6163 | }; |
e1a9cb8e | 6164 | \f |
252b5132 RH |
6165 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
6166 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
6167 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
6168 | #define TARGET_BIG_NAME "elf32-powerpc" | |
6169 | #define ELF_ARCH bfd_arch_powerpc | |
6170 | #define ELF_MACHINE_CODE EM_PPC | |
d0facd1b NC |
6171 | #ifdef __QNXTARGET__ |
6172 | #define ELF_MAXPAGESIZE 0x1000 | |
6173 | #else | |
252b5132 | 6174 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 6175 | #endif |
b1342370 | 6176 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
6177 | #define elf_info_to_howto ppc_elf_info_to_howto |
6178 | ||
6179 | #ifdef EM_CYGNUS_POWERPC | |
6180 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
6181 | #endif | |
6182 | ||
6183 | #ifdef EM_PPC_OLD | |
6184 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
6185 | #endif | |
6186 | ||
6187 | #define elf_backend_plt_not_loaded 1 | |
6188 | #define elf_backend_got_symbol_offset 4 | |
6189 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 6190 | #define elf_backend_can_refcount 1 |
252b5132 | 6191 | #define elf_backend_got_header_size 12 |
b491616a | 6192 | #define elf_backend_rela_normal 1 |
252b5132 | 6193 | |
43c40ab2 | 6194 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 6195 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 6196 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 RH |
6197 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
6198 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
70bccea4 | 6199 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 6200 | |
feee612b | 6201 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
6202 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
6203 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
6204 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
6205 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
6206 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
6207 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 6208 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
6209 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
6210 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
6211 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
6212 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
6213 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
6214 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
6215 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
c5fccbec DJ |
6216 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
6217 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
29c2fb7c | 6218 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
6219 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
6220 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
6221 | #define elf_backend_write_section ppc_elf_write_section | |
2f89ff8d | 6222 | #define elf_backend_special_sections ppc_elf_special_sections |
4c45e5c9 | 6223 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
252b5132 RH |
6224 | |
6225 | #include "elf32-target.h" |