Commit | Line | Data |
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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
86bbe32f | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
7898deda | 3 | 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 |
7fce784e AS |
73 | /* The PPC linker needs to keep track of the number of relocs that it |
74 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
75 | This is so that it can later discard them if they are found to be | |
76 | unnecessary. We store the information in a field extending the | |
77 | regular ELF linker hash table. */ | |
78 | ||
79 | struct ppc_elf_dyn_relocs | |
80 | { | |
81 | struct ppc_elf_dyn_relocs *next; | |
82 | ||
83 | /* The input section of the reloc. */ | |
84 | asection *sec; | |
85 | ||
86 | /* Total number of relocs copied for the input section. */ | |
87 | bfd_size_type count; | |
ee05f2fe AM |
88 | |
89 | /* Number of pc-relative relocs copied for the input section. */ | |
90 | bfd_size_type pc_count; | |
7fce784e AS |
91 | }; |
92 | ||
93 | /* PPC ELF linker hash entry. */ | |
94 | ||
95 | struct ppc_elf_link_hash_entry | |
96 | { | |
7619e7c7 | 97 | struct elf_link_hash_entry elf; |
7fce784e AS |
98 | |
99 | /* Track dynamic relocs copied for this symbol. */ | |
100 | struct ppc_elf_dyn_relocs *dyn_relocs; | |
7619e7c7 AM |
101 | |
102 | /* Contexts in which symbol is used in the GOT (or TOC). | |
fc0bffd6 | 103 | TLS_GD .. TLS_TLS bits are or'd into the mask as the |
7619e7c7 AM |
104 | corresponding relocs are encountered during check_relocs. |
105 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
106 | indicate the corresponding GOT entry type is not needed. */ | |
107 | #define TLS_GD 1 /* GD reloc. */ | |
108 | #define TLS_LD 2 /* LD reloc. */ | |
109 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
110 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
111 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
112 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
113 | char tls_mask; | |
7fce784e AS |
114 | }; |
115 | ||
116 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) | |
117 | ||
118 | /* PPC ELF linker hash table. */ | |
119 | ||
120 | struct ppc_elf_link_hash_table | |
121 | { | |
7619e7c7 AM |
122 | struct elf_link_hash_table elf; |
123 | ||
124 | /* Short-cuts to get to dynamic linker sections. */ | |
125 | asection *got; | |
126 | asection *relgot; | |
127 | asection *plt; | |
128 | asection *relplt; | |
129 | asection *dynbss; | |
130 | asection *relbss; | |
131 | asection *dynsbss; | |
132 | asection *relsbss; | |
133 | elf_linker_section_t *sdata; | |
134 | elf_linker_section_t *sdata2; | |
135 | ||
136 | /* Short-cut to first output tls section. */ | |
137 | asection *tls_sec; | |
138 | ||
139 | /* Shortcut to .__tls_get_addr. */ | |
140 | struct elf_link_hash_entry *tls_get_addr; | |
141 | ||
142 | /* TLS local dynamic got entry handling. */ | |
143 | union { | |
144 | bfd_signed_vma refcount; | |
145 | bfd_vma offset; | |
146 | } tlsld_got; | |
7fce784e AS |
147 | |
148 | /* Small local sym to section mapping cache. */ | |
149 | struct sym_sec_cache sym_sec; | |
150 | }; | |
151 | ||
152 | /* Get the PPC ELF linker hash table from a link_info structure. */ | |
153 | ||
154 | #define ppc_elf_hash_table(p) \ | |
155 | ((struct ppc_elf_link_hash_table *) (p)->hash) | |
156 | ||
157 | /* Create an entry in a PPC ELF linker hash table. */ | |
158 | ||
159 | static struct bfd_hash_entry * | |
55fd94b0 AM |
160 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
161 | struct bfd_hash_table *table, | |
162 | const char *string) | |
7fce784e AS |
163 | { |
164 | /* Allocate the structure if it has not already been allocated by a | |
165 | subclass. */ | |
166 | if (entry == NULL) | |
167 | { | |
168 | entry = bfd_hash_allocate (table, | |
169 | sizeof (struct ppc_elf_link_hash_entry)); | |
170 | if (entry == NULL) | |
171 | return entry; | |
172 | } | |
173 | ||
174 | /* Call the allocation method of the superclass. */ | |
175 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
176 | if (entry != NULL) | |
7619e7c7 AM |
177 | { |
178 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
179 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
180 | } | |
7fce784e AS |
181 | |
182 | return entry; | |
183 | } | |
184 | ||
185 | /* Create a PPC ELF linker hash table. */ | |
186 | ||
187 | static struct bfd_link_hash_table * | |
55fd94b0 | 188 | ppc_elf_link_hash_table_create (bfd *abfd) |
7fce784e AS |
189 | { |
190 | struct ppc_elf_link_hash_table *ret; | |
191 | ||
55fd94b0 | 192 | ret = bfd_malloc (sizeof (struct ppc_elf_link_hash_table)); |
7fce784e AS |
193 | if (ret == NULL) |
194 | return NULL; | |
195 | ||
7619e7c7 | 196 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, |
7fce784e AS |
197 | ppc_elf_link_hash_newfunc)) |
198 | { | |
199 | free (ret); | |
200 | return NULL; | |
201 | } | |
202 | ||
7619e7c7 AM |
203 | ret->got = NULL; |
204 | ret->relgot = NULL; | |
205 | ret->plt = NULL; | |
206 | ret->relplt = NULL; | |
207 | ret->dynbss = NULL; | |
208 | ret->relbss = NULL; | |
209 | ret->dynsbss = NULL; | |
210 | ret->relsbss = NULL; | |
211 | ret->sdata = NULL; | |
212 | ret->sdata2 = NULL; | |
213 | ret->tls_sec = NULL; | |
214 | ret->tls_get_addr = NULL; | |
215 | ret->tlsld_got.refcount = 0; | |
7fce784e AS |
216 | ret->sym_sec.abfd = NULL; |
217 | ||
7619e7c7 | 218 | return &ret->elf.root; |
7fce784e AS |
219 | } |
220 | ||
fc0bffd6 AM |
221 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
222 | copying dynamic variables from a shared lib into an app's dynbss | |
223 | section, and instead use a dynamic relocation to point into the | |
224 | shared lib. */ | |
225 | #define ELIMINATE_COPY_RELOCS 1 | |
226 | ||
7fce784e AS |
227 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
228 | ||
229 | static void | |
55fd94b0 AM |
230 | ppc_elf_copy_indirect_symbol (struct elf_backend_data *bed, |
231 | struct elf_link_hash_entry *dir, | |
232 | struct elf_link_hash_entry *ind) | |
7fce784e AS |
233 | { |
234 | struct ppc_elf_link_hash_entry *edir, *eind; | |
235 | ||
236 | edir = (struct ppc_elf_link_hash_entry *) dir; | |
237 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
238 | ||
239 | if (eind->dyn_relocs != NULL) | |
240 | { | |
241 | if (edir->dyn_relocs != NULL) | |
242 | { | |
243 | struct ppc_elf_dyn_relocs **pp; | |
244 | struct ppc_elf_dyn_relocs *p; | |
245 | ||
246 | if (ind->root.type == bfd_link_hash_indirect) | |
247 | abort (); | |
248 | ||
249 | /* Add reloc counts against the weak sym to the strong sym | |
250 | list. Merge any entries against the same section. */ | |
251 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
252 | { | |
253 | struct ppc_elf_dyn_relocs *q; | |
254 | ||
255 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
256 | if (q->sec == p->sec) | |
257 | { | |
ee05f2fe | 258 | q->pc_count += p->pc_count; |
7fce784e AS |
259 | q->count += p->count; |
260 | *pp = p->next; | |
261 | break; | |
262 | } | |
263 | if (q == NULL) | |
264 | pp = &p->next; | |
265 | } | |
266 | *pp = edir->dyn_relocs; | |
267 | } | |
268 | ||
269 | edir->dyn_relocs = eind->dyn_relocs; | |
270 | eind->dyn_relocs = NULL; | |
271 | } | |
272 | ||
7619e7c7 AM |
273 | edir->tls_mask |= eind->tls_mask; |
274 | ||
81848ca0 AM |
275 | if (ELIMINATE_COPY_RELOCS |
276 | && ind->root.type != bfd_link_hash_indirect | |
277 | && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
fc0bffd6 AM |
278 | /* If called to transfer flags for a weakdef during processing |
279 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
280 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
281 | dir->elf_link_hash_flags |= | |
282 | (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC | |
283 | | ELF_LINK_HASH_REF_REGULAR | |
284 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK)); | |
285 | else | |
286 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
7fce784e AS |
287 | } |
288 | \f | |
e47cd125 | 289 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 290 | |
8da6118f | 291 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
292 | /* This reloc does nothing. */ |
293 | HOWTO (R_PPC_NONE, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
252b5132 RH |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC_NONE", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
252b5132 RH |
303 | 0, /* src_mask */ |
304 | 0, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
252b5132 RH |
306 | |
307 | /* A standard 32 bit relocation. */ | |
308 | HOWTO (R_PPC_ADDR32, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 32, /* bitsize */ | |
b34976b6 | 312 | FALSE, /* pc_relative */ |
252b5132 RH |
313 | 0, /* bitpos */ |
314 | complain_overflow_bitfield, /* complain_on_overflow */ | |
315 | bfd_elf_generic_reloc, /* special_function */ | |
316 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 317 | FALSE, /* partial_inplace */ |
252b5132 RH |
318 | 0, /* src_mask */ |
319 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 320 | FALSE), /* pcrel_offset */ |
252b5132 RH |
321 | |
322 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
323 | FIXME: we don't check that, we just clear them. */ | |
324 | HOWTO (R_PPC_ADDR24, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 26, /* bitsize */ | |
b34976b6 | 328 | FALSE, /* pc_relative */ |
252b5132 RH |
329 | 0, /* bitpos */ |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* special_function */ | |
332 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 333 | FALSE, /* partial_inplace */ |
252b5132 RH |
334 | 0, /* src_mask */ |
335 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 336 | FALSE), /* pcrel_offset */ |
252b5132 RH |
337 | |
338 | /* A standard 16 bit relocation. */ | |
339 | HOWTO (R_PPC_ADDR16, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
252b5132 RH |
344 | 0, /* bitpos */ |
345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
252b5132 RH |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
252b5132 RH |
352 | |
353 | /* A 16 bit relocation without overflow. */ | |
354 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
252b5132 RH |
359 | 0, /* bitpos */ |
360 | complain_overflow_dont,/* complain_on_overflow */ | |
361 | bfd_elf_generic_reloc, /* special_function */ | |
362 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
252b5132 RH |
364 | 0, /* src_mask */ |
365 | 0xffff, /* dst_mask */ | |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
252b5132 RH |
367 | |
368 | /* The high order 16 bits of an address. */ | |
369 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
370 | 16, /* rightshift */ | |
371 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 16, /* bitsize */ | |
b34976b6 | 373 | FALSE, /* pc_relative */ |
252b5132 RH |
374 | 0, /* bitpos */ |
375 | complain_overflow_dont, /* complain_on_overflow */ | |
376 | bfd_elf_generic_reloc, /* special_function */ | |
377 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 378 | FALSE, /* partial_inplace */ |
252b5132 RH |
379 | 0, /* src_mask */ |
380 | 0xffff, /* dst_mask */ | |
b34976b6 | 381 | FALSE), /* pcrel_offset */ |
252b5132 RH |
382 | |
383 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 384 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
385 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
386 | 16, /* rightshift */ | |
387 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 16, /* bitsize */ | |
b34976b6 | 389 | FALSE, /* pc_relative */ |
252b5132 RH |
390 | 0, /* bitpos */ |
391 | complain_overflow_dont, /* complain_on_overflow */ | |
392 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
393 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 394 | FALSE, /* partial_inplace */ |
252b5132 RH |
395 | 0, /* src_mask */ |
396 | 0xffff, /* dst_mask */ | |
b34976b6 | 397 | FALSE), /* pcrel_offset */ |
252b5132 RH |
398 | |
399 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
400 | FIXME: we don't check that, we just clear them. */ | |
401 | HOWTO (R_PPC_ADDR14, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
252b5132 RH |
406 | 0, /* bitpos */ |
407 | complain_overflow_bitfield, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
252b5132 RH |
411 | 0, /* src_mask */ |
412 | 0xfffc, /* dst_mask */ | |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
252b5132 RH |
414 | |
415 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
416 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 417 | bits must be zero. */ |
252b5132 RH |
418 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
419 | 0, /* rightshift */ | |
420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 16, /* bitsize */ | |
b34976b6 | 422 | FALSE, /* pc_relative */ |
252b5132 RH |
423 | 0, /* bitpos */ |
424 | complain_overflow_bitfield, /* complain_on_overflow */ | |
425 | bfd_elf_generic_reloc, /* special_function */ | |
426 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
252b5132 RH |
428 | 0, /* src_mask */ |
429 | 0xfffc, /* dst_mask */ | |
b34976b6 | 430 | FALSE), /* pcrel_offset */ |
252b5132 RH |
431 | |
432 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
433 | indicate that the branch is not expected to be taken. The lower | |
434 | two bits must be zero. */ | |
435 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 16, /* bitsize */ | |
b34976b6 | 439 | FALSE, /* pc_relative */ |
252b5132 RH |
440 | 0, /* bitpos */ |
441 | complain_overflow_bitfield, /* complain_on_overflow */ | |
442 | bfd_elf_generic_reloc, /* special_function */ | |
443 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
252b5132 RH |
445 | 0, /* src_mask */ |
446 | 0xfffc, /* dst_mask */ | |
b34976b6 | 447 | FALSE), /* pcrel_offset */ |
252b5132 | 448 | |
8da6118f | 449 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
450 | HOWTO (R_PPC_REL24, /* type */ |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 26, /* bitsize */ | |
b34976b6 | 454 | TRUE, /* pc_relative */ |
252b5132 RH |
455 | 0, /* bitpos */ |
456 | complain_overflow_signed, /* complain_on_overflow */ | |
457 | bfd_elf_generic_reloc, /* special_function */ | |
458 | "R_PPC_REL24", /* name */ | |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
252b5132 RH |
460 | 0, /* src_mask */ |
461 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 462 | TRUE), /* pcrel_offset */ |
252b5132 | 463 | |
8da6118f | 464 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
465 | HOWTO (R_PPC_REL14, /* type */ |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | TRUE, /* pc_relative */ |
252b5132 RH |
470 | 0, /* bitpos */ |
471 | complain_overflow_signed, /* complain_on_overflow */ | |
472 | bfd_elf_generic_reloc, /* special_function */ | |
473 | "R_PPC_REL14", /* name */ | |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
252b5132 RH |
475 | 0, /* src_mask */ |
476 | 0xfffc, /* dst_mask */ | |
b34976b6 | 477 | TRUE), /* pcrel_offset */ |
252b5132 | 478 | |
8da6118f | 479 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
480 | the branch is expected to be taken. The lower two bits must be |
481 | zero. */ | |
482 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
483 | 0, /* rightshift */ | |
484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 16, /* bitsize */ | |
b34976b6 | 486 | TRUE, /* pc_relative */ |
252b5132 RH |
487 | 0, /* bitpos */ |
488 | complain_overflow_signed, /* complain_on_overflow */ | |
489 | bfd_elf_generic_reloc, /* special_function */ | |
490 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 491 | FALSE, /* partial_inplace */ |
252b5132 RH |
492 | 0, /* src_mask */ |
493 | 0xfffc, /* dst_mask */ | |
b34976b6 | 494 | TRUE), /* pcrel_offset */ |
252b5132 | 495 | |
8da6118f | 496 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
497 | the branch is not expected to be taken. The lower two bits must |
498 | be zero. */ | |
499 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
500 | 0, /* rightshift */ | |
501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 16, /* bitsize */ | |
b34976b6 | 503 | TRUE, /* pc_relative */ |
252b5132 RH |
504 | 0, /* bitpos */ |
505 | complain_overflow_signed, /* complain_on_overflow */ | |
506 | bfd_elf_generic_reloc, /* special_function */ | |
507 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 508 | FALSE, /* partial_inplace */ |
252b5132 RH |
509 | 0, /* src_mask */ |
510 | 0xfffc, /* dst_mask */ | |
b34976b6 | 511 | TRUE), /* pcrel_offset */ |
252b5132 RH |
512 | |
513 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
514 | symbol. */ | |
515 | HOWTO (R_PPC_GOT16, /* type */ | |
516 | 0, /* rightshift */ | |
517 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
518 | 16, /* bitsize */ | |
b34976b6 | 519 | FALSE, /* pc_relative */ |
252b5132 RH |
520 | 0, /* bitpos */ |
521 | complain_overflow_signed, /* complain_on_overflow */ | |
522 | bfd_elf_generic_reloc, /* special_function */ | |
523 | "R_PPC_GOT16", /* name */ | |
b34976b6 | 524 | FALSE, /* partial_inplace */ |
252b5132 RH |
525 | 0, /* src_mask */ |
526 | 0xffff, /* dst_mask */ | |
b34976b6 | 527 | FALSE), /* pcrel_offset */ |
252b5132 RH |
528 | |
529 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
530 | the symbol. */ | |
531 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
532 | 0, /* rightshift */ | |
533 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 16, /* bitsize */ | |
b34976b6 | 535 | FALSE, /* pc_relative */ |
252b5132 RH |
536 | 0, /* bitpos */ |
537 | complain_overflow_dont, /* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
539 | "R_PPC_GOT16_LO", /* name */ | |
b34976b6 | 540 | FALSE, /* partial_inplace */ |
252b5132 RH |
541 | 0, /* src_mask */ |
542 | 0xffff, /* dst_mask */ | |
b34976b6 | 543 | FALSE), /* pcrel_offset */ |
252b5132 RH |
544 | |
545 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
546 | the symbol. */ | |
547 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
548 | 16, /* rightshift */ | |
549 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
550 | 16, /* bitsize */ | |
b34976b6 | 551 | FALSE, /* pc_relative */ |
252b5132 RH |
552 | 0, /* bitpos */ |
553 | complain_overflow_bitfield, /* complain_on_overflow */ | |
554 | bfd_elf_generic_reloc, /* special_function */ | |
555 | "R_PPC_GOT16_HI", /* name */ | |
b34976b6 | 556 | FALSE, /* partial_inplace */ |
252b5132 RH |
557 | 0, /* src_mask */ |
558 | 0xffff, /* dst_mask */ | |
b34976b6 | 559 | FALSE), /* pcrel_offset */ |
252b5132 RH |
560 | |
561 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
562 | the symbol. */ | |
563 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
564 | 16, /* rightshift */ | |
565 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 16, /* bitsize */ | |
b34976b6 | 567 | FALSE, /* pc_relative */ |
252b5132 RH |
568 | 0, /* bitpos */ |
569 | complain_overflow_bitfield, /* complain_on_overflow */ | |
570 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
571 | "R_PPC_GOT16_HA", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
252b5132 RH |
573 | 0, /* src_mask */ |
574 | 0xffff, /* dst_mask */ | |
b34976b6 | 575 | FALSE), /* pcrel_offset */ |
252b5132 RH |
576 | |
577 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
578 | entry for the symbol. */ | |
579 | HOWTO (R_PPC_PLTREL24, /* type */ | |
580 | 0, /* rightshift */ | |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 26, /* bitsize */ | |
b34976b6 | 583 | TRUE, /* pc_relative */ |
252b5132 RH |
584 | 0, /* bitpos */ |
585 | complain_overflow_signed, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
587 | "R_PPC_PLTREL24", /* name */ | |
b34976b6 | 588 | FALSE, /* partial_inplace */ |
252b5132 RH |
589 | 0, /* src_mask */ |
590 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 591 | TRUE), /* pcrel_offset */ |
252b5132 RH |
592 | |
593 | /* This is used only by the dynamic linker. The symbol should exist | |
594 | both in the object being run and in some shared library. The | |
595 | dynamic linker copies the data addressed by the symbol from the | |
596 | shared library into the object, because the object being | |
597 | run has to have the data at some particular address. */ | |
598 | HOWTO (R_PPC_COPY, /* type */ | |
599 | 0, /* rightshift */ | |
600 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
601 | 32, /* bitsize */ | |
b34976b6 | 602 | FALSE, /* pc_relative */ |
252b5132 RH |
603 | 0, /* bitpos */ |
604 | complain_overflow_bitfield, /* complain_on_overflow */ | |
605 | bfd_elf_generic_reloc, /* special_function */ | |
606 | "R_PPC_COPY", /* name */ | |
b34976b6 | 607 | FALSE, /* partial_inplace */ |
252b5132 RH |
608 | 0, /* src_mask */ |
609 | 0, /* dst_mask */ | |
b34976b6 | 610 | FALSE), /* pcrel_offset */ |
252b5132 RH |
611 | |
612 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
613 | entries. */ | |
614 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
615 | 0, /* rightshift */ | |
616 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
617 | 32, /* bitsize */ | |
b34976b6 | 618 | FALSE, /* pc_relative */ |
252b5132 RH |
619 | 0, /* bitpos */ |
620 | complain_overflow_bitfield, /* complain_on_overflow */ | |
621 | bfd_elf_generic_reloc, /* special_function */ | |
622 | "R_PPC_GLOB_DAT", /* name */ | |
b34976b6 | 623 | FALSE, /* partial_inplace */ |
252b5132 RH |
624 | 0, /* src_mask */ |
625 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 626 | FALSE), /* pcrel_offset */ |
252b5132 RH |
627 | |
628 | /* Marks a procedure linkage table entry for a symbol. */ | |
629 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
b34976b6 | 633 | FALSE, /* pc_relative */ |
252b5132 RH |
634 | 0, /* bitpos */ |
635 | complain_overflow_bitfield, /* complain_on_overflow */ | |
636 | bfd_elf_generic_reloc, /* special_function */ | |
637 | "R_PPC_JMP_SLOT", /* name */ | |
b34976b6 | 638 | FALSE, /* partial_inplace */ |
252b5132 RH |
639 | 0, /* src_mask */ |
640 | 0, /* dst_mask */ | |
b34976b6 | 641 | FALSE), /* pcrel_offset */ |
252b5132 RH |
642 | |
643 | /* Used only by the dynamic linker. When the object is run, this | |
644 | longword is set to the load address of the object, plus the | |
645 | addend. */ | |
646 | HOWTO (R_PPC_RELATIVE, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 32, /* bitsize */ | |
b34976b6 | 650 | FALSE, /* pc_relative */ |
252b5132 RH |
651 | 0, /* bitpos */ |
652 | complain_overflow_bitfield, /* complain_on_overflow */ | |
653 | bfd_elf_generic_reloc, /* special_function */ | |
654 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
252b5132 RH |
656 | 0, /* src_mask */ |
657 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 658 | FALSE), /* pcrel_offset */ |
252b5132 RH |
659 | |
660 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
661 | object rather than the final value. Normally used for | |
662 | _GLOBAL_OFFSET_TABLE_. */ | |
663 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
664 | 0, /* rightshift */ | |
665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 26, /* bitsize */ | |
b34976b6 | 667 | TRUE, /* pc_relative */ |
252b5132 RH |
668 | 0, /* bitpos */ |
669 | complain_overflow_signed, /* complain_on_overflow */ | |
670 | bfd_elf_generic_reloc, /* special_function */ | |
671 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 672 | FALSE, /* partial_inplace */ |
252b5132 RH |
673 | 0, /* src_mask */ |
674 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 675 | TRUE), /* pcrel_offset */ |
252b5132 RH |
676 | |
677 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
678 | HOWTO (R_PPC_UADDR32, /* type */ | |
679 | 0, /* rightshift */ | |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 32, /* bitsize */ | |
b34976b6 | 682 | FALSE, /* pc_relative */ |
252b5132 RH |
683 | 0, /* bitpos */ |
684 | complain_overflow_bitfield, /* complain_on_overflow */ | |
685 | bfd_elf_generic_reloc, /* special_function */ | |
686 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 687 | FALSE, /* partial_inplace */ |
252b5132 RH |
688 | 0, /* src_mask */ |
689 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 690 | FALSE), /* pcrel_offset */ |
252b5132 RH |
691 | |
692 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
693 | HOWTO (R_PPC_UADDR16, /* type */ | |
694 | 0, /* rightshift */ | |
695 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
b34976b6 | 697 | FALSE, /* pc_relative */ |
252b5132 RH |
698 | 0, /* bitpos */ |
699 | complain_overflow_bitfield, /* complain_on_overflow */ | |
700 | bfd_elf_generic_reloc, /* special_function */ | |
701 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 702 | FALSE, /* partial_inplace */ |
252b5132 RH |
703 | 0, /* src_mask */ |
704 | 0xffff, /* dst_mask */ | |
b34976b6 | 705 | FALSE), /* pcrel_offset */ |
252b5132 RH |
706 | |
707 | /* 32-bit PC relative */ | |
708 | HOWTO (R_PPC_REL32, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 32, /* bitsize */ | |
b34976b6 | 712 | TRUE, /* pc_relative */ |
252b5132 RH |
713 | 0, /* bitpos */ |
714 | complain_overflow_bitfield, /* complain_on_overflow */ | |
715 | bfd_elf_generic_reloc, /* special_function */ | |
716 | "R_PPC_REL32", /* name */ | |
b34976b6 | 717 | FALSE, /* partial_inplace */ |
252b5132 RH |
718 | 0, /* src_mask */ |
719 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 720 | TRUE), /* pcrel_offset */ |
252b5132 RH |
721 | |
722 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 723 | FIXME: not supported. */ |
252b5132 RH |
724 | HOWTO (R_PPC_PLT32, /* type */ |
725 | 0, /* rightshift */ | |
726 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
727 | 32, /* bitsize */ | |
b34976b6 | 728 | FALSE, /* pc_relative */ |
252b5132 RH |
729 | 0, /* bitpos */ |
730 | complain_overflow_bitfield, /* complain_on_overflow */ | |
731 | bfd_elf_generic_reloc, /* special_function */ | |
732 | "R_PPC_PLT32", /* name */ | |
b34976b6 | 733 | FALSE, /* partial_inplace */ |
252b5132 RH |
734 | 0, /* src_mask */ |
735 | 0, /* dst_mask */ | |
b34976b6 | 736 | FALSE), /* pcrel_offset */ |
252b5132 RH |
737 | |
738 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 739 | FIXME: not supported. */ |
252b5132 RH |
740 | HOWTO (R_PPC_PLTREL32, /* type */ |
741 | 0, /* rightshift */ | |
742 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 32, /* bitsize */ | |
b34976b6 | 744 | TRUE, /* pc_relative */ |
252b5132 RH |
745 | 0, /* bitpos */ |
746 | complain_overflow_bitfield, /* complain_on_overflow */ | |
747 | bfd_elf_generic_reloc, /* special_function */ | |
748 | "R_PPC_PLTREL32", /* name */ | |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
252b5132 RH |
750 | 0, /* src_mask */ |
751 | 0, /* dst_mask */ | |
b34976b6 | 752 | TRUE), /* pcrel_offset */ |
252b5132 RH |
753 | |
754 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
755 | the symbol. */ | |
756 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
757 | 0, /* rightshift */ | |
758 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
759 | 16, /* bitsize */ | |
b34976b6 | 760 | FALSE, /* pc_relative */ |
252b5132 RH |
761 | 0, /* bitpos */ |
762 | complain_overflow_dont, /* complain_on_overflow */ | |
763 | bfd_elf_generic_reloc, /* special_function */ | |
764 | "R_PPC_PLT16_LO", /* name */ | |
b34976b6 | 765 | FALSE, /* partial_inplace */ |
252b5132 RH |
766 | 0, /* src_mask */ |
767 | 0xffff, /* dst_mask */ | |
b34976b6 | 768 | FALSE), /* pcrel_offset */ |
252b5132 RH |
769 | |
770 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
771 | the symbol. */ | |
772 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
773 | 16, /* rightshift */ | |
774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
775 | 16, /* bitsize */ | |
b34976b6 | 776 | FALSE, /* pc_relative */ |
252b5132 RH |
777 | 0, /* bitpos */ |
778 | complain_overflow_bitfield, /* complain_on_overflow */ | |
779 | bfd_elf_generic_reloc, /* special_function */ | |
780 | "R_PPC_PLT16_HI", /* name */ | |
b34976b6 | 781 | FALSE, /* partial_inplace */ |
252b5132 RH |
782 | 0, /* src_mask */ |
783 | 0xffff, /* dst_mask */ | |
b34976b6 | 784 | FALSE), /* pcrel_offset */ |
252b5132 RH |
785 | |
786 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
787 | the symbol. */ | |
788 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
789 | 16, /* rightshift */ | |
790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 16, /* bitsize */ | |
b34976b6 | 792 | FALSE, /* pc_relative */ |
252b5132 RH |
793 | 0, /* bitpos */ |
794 | complain_overflow_bitfield, /* complain_on_overflow */ | |
795 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
796 | "R_PPC_PLT16_HA", /* name */ | |
b34976b6 | 797 | FALSE, /* partial_inplace */ |
252b5132 RH |
798 | 0, /* src_mask */ |
799 | 0xffff, /* dst_mask */ | |
b34976b6 | 800 | FALSE), /* pcrel_offset */ |
252b5132 RH |
801 | |
802 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
803 | small data items. */ | |
804 | HOWTO (R_PPC_SDAREL16, /* type */ | |
805 | 0, /* rightshift */ | |
806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
807 | 16, /* bitsize */ | |
b34976b6 | 808 | FALSE, /* pc_relative */ |
252b5132 RH |
809 | 0, /* bitpos */ |
810 | complain_overflow_signed, /* complain_on_overflow */ | |
811 | bfd_elf_generic_reloc, /* special_function */ | |
812 | "R_PPC_SDAREL16", /* name */ | |
b34976b6 | 813 | FALSE, /* partial_inplace */ |
252b5132 RH |
814 | 0, /* src_mask */ |
815 | 0xffff, /* dst_mask */ | |
b34976b6 | 816 | FALSE), /* pcrel_offset */ |
252b5132 | 817 | |
c061c2d8 | 818 | /* 16-bit section relative relocation. */ |
252b5132 RH |
819 | HOWTO (R_PPC_SECTOFF, /* type */ |
820 | 0, /* rightshift */ | |
c061c2d8 AM |
821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
822 | 16, /* bitsize */ | |
b34976b6 | 823 | FALSE, /* pc_relative */ |
252b5132 RH |
824 | 0, /* bitpos */ |
825 | complain_overflow_bitfield, /* complain_on_overflow */ | |
826 | bfd_elf_generic_reloc, /* special_function */ | |
827 | "R_PPC_SECTOFF", /* name */ | |
b34976b6 | 828 | FALSE, /* partial_inplace */ |
252b5132 | 829 | 0, /* src_mask */ |
c061c2d8 | 830 | 0xffff, /* dst_mask */ |
b34976b6 | 831 | FALSE), /* pcrel_offset */ |
252b5132 | 832 | |
c3668558 | 833 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
834 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
835 | 0, /* rightshift */ | |
836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
837 | 16, /* bitsize */ | |
b34976b6 | 838 | FALSE, /* pc_relative */ |
252b5132 RH |
839 | 0, /* bitpos */ |
840 | complain_overflow_dont, /* complain_on_overflow */ | |
841 | bfd_elf_generic_reloc, /* special_function */ | |
842 | "R_PPC_SECTOFF_LO", /* name */ | |
b34976b6 | 843 | FALSE, /* partial_inplace */ |
252b5132 RH |
844 | 0, /* src_mask */ |
845 | 0xffff, /* dst_mask */ | |
b34976b6 | 846 | FALSE), /* pcrel_offset */ |
252b5132 | 847 | |
c3668558 | 848 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
849 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
850 | 16, /* rightshift */ | |
851 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
852 | 16, /* bitsize */ | |
b34976b6 | 853 | FALSE, /* pc_relative */ |
252b5132 RH |
854 | 0, /* bitpos */ |
855 | complain_overflow_bitfield, /* complain_on_overflow */ | |
856 | bfd_elf_generic_reloc, /* special_function */ | |
857 | "R_PPC_SECTOFF_HI", /* name */ | |
b34976b6 | 858 | FALSE, /* partial_inplace */ |
252b5132 RH |
859 | 0, /* src_mask */ |
860 | 0xffff, /* dst_mask */ | |
b34976b6 | 861 | FALSE), /* pcrel_offset */ |
252b5132 | 862 | |
c3668558 | 863 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
864 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
865 | 16, /* rightshift */ | |
866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
867 | 16, /* bitsize */ | |
b34976b6 | 868 | FALSE, /* pc_relative */ |
252b5132 RH |
869 | 0, /* bitpos */ |
870 | complain_overflow_bitfield, /* complain_on_overflow */ | |
871 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
872 | "R_PPC_SECTOFF_HA", /* name */ | |
b34976b6 | 873 | FALSE, /* partial_inplace */ |
252b5132 RH |
874 | 0, /* src_mask */ |
875 | 0xffff, /* dst_mask */ | |
b34976b6 | 876 | FALSE), /* pcrel_offset */ |
252b5132 | 877 | |
7619e7c7 AM |
878 | /* Marker reloc for TLS. */ |
879 | HOWTO (R_PPC_TLS, | |
252b5132 RH |
880 | 0, /* rightshift */ |
881 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
882 | 32, /* bitsize */ | |
b34976b6 | 883 | FALSE, /* pc_relative */ |
252b5132 | 884 | 0, /* bitpos */ |
7619e7c7 | 885 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 886 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
887 | "R_PPC_TLS", /* name */ |
888 | FALSE, /* partial_inplace */ | |
889 | 0, /* src_mask */ | |
890 | 0, /* dst_mask */ | |
891 | FALSE), /* pcrel_offset */ | |
892 | ||
893 | /* Computes the load module index of the load module that contains the | |
894 | definition of its TLS sym. */ | |
895 | HOWTO (R_PPC_DTPMOD32, | |
896 | 0, /* rightshift */ | |
897 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
898 | 32, /* bitsize */ | |
899 | FALSE, /* pc_relative */ | |
900 | 0, /* bitpos */ | |
901 | complain_overflow_dont, /* complain_on_overflow */ | |
902 | ppc_elf_unhandled_reloc, /* special_function */ | |
903 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 904 | FALSE, /* partial_inplace */ |
252b5132 RH |
905 | 0, /* src_mask */ |
906 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 907 | FALSE), /* pcrel_offset */ |
252b5132 | 908 | |
7619e7c7 AM |
909 | /* Computes a dtv-relative displacement, the difference between the value |
910 | of sym+add and the base address of the thread-local storage block that | |
911 | contains the definition of sym, minus 0x8000. */ | |
912 | HOWTO (R_PPC_DTPREL32, | |
913 | 0, /* rightshift */ | |
914 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
915 | 32, /* bitsize */ | |
916 | FALSE, /* pc_relative */ | |
917 | 0, /* bitpos */ | |
918 | complain_overflow_dont, /* complain_on_overflow */ | |
919 | ppc_elf_unhandled_reloc, /* special_function */ | |
920 | "R_PPC_DTPREL32", /* name */ | |
921 | FALSE, /* partial_inplace */ | |
922 | 0, /* src_mask */ | |
923 | 0xffffffff, /* dst_mask */ | |
924 | FALSE), /* pcrel_offset */ | |
925 | ||
926 | /* A 16 bit dtprel reloc. */ | |
927 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
928 | 0, /* rightshift */ |
929 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
930 | 16, /* bitsize */ | |
b34976b6 | 931 | FALSE, /* pc_relative */ |
252b5132 | 932 | 0, /* bitpos */ |
7619e7c7 AM |
933 | complain_overflow_signed, /* complain_on_overflow */ |
934 | ppc_elf_unhandled_reloc, /* special_function */ | |
935 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 936 | FALSE, /* partial_inplace */ |
252b5132 RH |
937 | 0, /* src_mask */ |
938 | 0xffff, /* dst_mask */ | |
b34976b6 | 939 | FALSE), /* pcrel_offset */ |
252b5132 | 940 | |
7619e7c7 AM |
941 | /* Like DTPREL16, but no overflow. */ |
942 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
943 | 0, /* rightshift */ |
944 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
945 | 16, /* bitsize */ | |
b34976b6 | 946 | FALSE, /* pc_relative */ |
252b5132 | 947 | 0, /* bitpos */ |
7619e7c7 AM |
948 | complain_overflow_dont, /* complain_on_overflow */ |
949 | ppc_elf_unhandled_reloc, /* special_function */ | |
950 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 951 | FALSE, /* partial_inplace */ |
252b5132 RH |
952 | 0, /* src_mask */ |
953 | 0xffff, /* dst_mask */ | |
b34976b6 | 954 | FALSE), /* pcrel_offset */ |
252b5132 | 955 | |
7619e7c7 AM |
956 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
957 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
958 | 16, /* rightshift */ |
959 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
960 | 16, /* bitsize */ | |
b34976b6 | 961 | FALSE, /* pc_relative */ |
252b5132 RH |
962 | 0, /* bitpos */ |
963 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
964 | ppc_elf_unhandled_reloc, /* special_function */ |
965 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 966 | FALSE, /* partial_inplace */ |
252b5132 RH |
967 | 0, /* src_mask */ |
968 | 0xffff, /* dst_mask */ | |
b34976b6 | 969 | FALSE), /* pcrel_offset */ |
252b5132 | 970 | |
7619e7c7 AM |
971 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
972 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
973 | 16, /* rightshift */ |
974 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
975 | 16, /* bitsize */ | |
b34976b6 | 976 | FALSE, /* pc_relative */ |
252b5132 RH |
977 | 0, /* bitpos */ |
978 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
979 | ppc_elf_unhandled_reloc, /* special_function */ |
980 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 981 | FALSE, /* partial_inplace */ |
252b5132 RH |
982 | 0, /* src_mask */ |
983 | 0xffff, /* dst_mask */ | |
b34976b6 | 984 | FALSE), /* pcrel_offset */ |
252b5132 | 985 | |
7619e7c7 AM |
986 | /* Computes a tp-relative displacement, the difference between the value of |
987 | sym+add and the value of the thread pointer (r13). */ | |
988 | HOWTO (R_PPC_TPREL32, | |
989 | 0, /* rightshift */ | |
990 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 32, /* bitsize */ | |
992 | FALSE, /* pc_relative */ | |
993 | 0, /* bitpos */ | |
994 | complain_overflow_dont, /* complain_on_overflow */ | |
995 | ppc_elf_unhandled_reloc, /* special_function */ | |
996 | "R_PPC_TPREL32", /* name */ | |
997 | FALSE, /* partial_inplace */ | |
998 | 0, /* src_mask */ | |
999 | 0xffffffff, /* dst_mask */ | |
1000 | FALSE), /* pcrel_offset */ | |
1001 | ||
1002 | /* A 16 bit tprel reloc. */ | |
1003 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
1004 | 0, /* rightshift */ |
1005 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1006 | 16, /* bitsize */ | |
b34976b6 | 1007 | FALSE, /* pc_relative */ |
252b5132 | 1008 | 0, /* bitpos */ |
7619e7c7 AM |
1009 | complain_overflow_signed, /* complain_on_overflow */ |
1010 | ppc_elf_unhandled_reloc, /* special_function */ | |
1011 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 1012 | FALSE, /* partial_inplace */ |
252b5132 RH |
1013 | 0, /* src_mask */ |
1014 | 0xffff, /* dst_mask */ | |
b34976b6 | 1015 | FALSE), /* pcrel_offset */ |
252b5132 | 1016 | |
7619e7c7 AM |
1017 | /* Like TPREL16, but no overflow. */ |
1018 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
1019 | 0, /* rightshift */ |
1020 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 16, /* bitsize */ | |
b34976b6 | 1022 | FALSE, /* pc_relative */ |
252b5132 | 1023 | 0, /* bitpos */ |
7619e7c7 AM |
1024 | complain_overflow_dont, /* complain_on_overflow */ |
1025 | ppc_elf_unhandled_reloc, /* special_function */ | |
1026 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 1027 | FALSE, /* partial_inplace */ |
252b5132 RH |
1028 | 0, /* src_mask */ |
1029 | 0xffff, /* dst_mask */ | |
b34976b6 | 1030 | FALSE), /* pcrel_offset */ |
252b5132 | 1031 | |
7619e7c7 AM |
1032 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
1033 | HOWTO (R_PPC_TPREL16_HI, | |
1034 | 16, /* rightshift */ | |
1035 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1036 | 16, /* bitsize */ | |
1037 | FALSE, /* pc_relative */ | |
1038 | 0, /* bitpos */ | |
1039 | complain_overflow_dont, /* complain_on_overflow */ | |
1040 | ppc_elf_unhandled_reloc, /* special_function */ | |
1041 | "R_PPC_TPREL16_HI", /* name */ | |
1042 | FALSE, /* partial_inplace */ | |
1043 | 0, /* src_mask */ | |
1044 | 0xffff, /* dst_mask */ | |
1045 | FALSE), /* pcrel_offset */ | |
1046 | ||
1047 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1048 | HOWTO (R_PPC_TPREL16_HA, | |
1049 | 16, /* rightshift */ | |
1050 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1051 | 16, /* bitsize */ | |
1052 | FALSE, /* pc_relative */ | |
1053 | 0, /* bitpos */ | |
1054 | complain_overflow_dont, /* complain_on_overflow */ | |
1055 | ppc_elf_unhandled_reloc, /* special_function */ | |
1056 | "R_PPC_TPREL16_HA", /* name */ | |
1057 | FALSE, /* partial_inplace */ | |
1058 | 0, /* src_mask */ | |
1059 | 0xffff, /* dst_mask */ | |
1060 | FALSE), /* pcrel_offset */ | |
1061 | ||
1062 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1063 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1064 | to the first entry. */ | |
1065 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
1066 | 0, /* rightshift */ |
1067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1068 | 16, /* bitsize */ | |
b34976b6 | 1069 | FALSE, /* pc_relative */ |
252b5132 RH |
1070 | 0, /* bitpos */ |
1071 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1072 | ppc_elf_unhandled_reloc, /* special_function */ |
1073 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 1074 | FALSE, /* partial_inplace */ |
252b5132 RH |
1075 | 0, /* src_mask */ |
1076 | 0xffff, /* dst_mask */ | |
b34976b6 | 1077 | FALSE), /* pcrel_offset */ |
252b5132 | 1078 | |
7619e7c7 AM |
1079 | /* Like GOT_TLSGD16, but no overflow. */ |
1080 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1081 | 0, /* rightshift */ |
7619e7c7 | 1082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1083 | 16, /* bitsize */ |
b34976b6 | 1084 | FALSE, /* pc_relative */ |
252b5132 | 1085 | 0, /* bitpos */ |
7619e7c7 AM |
1086 | complain_overflow_dont, /* complain_on_overflow */ |
1087 | ppc_elf_unhandled_reloc, /* special_function */ | |
1088 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1089 | FALSE, /* partial_inplace */ |
252b5132 RH |
1090 | 0, /* src_mask */ |
1091 | 0xffff, /* dst_mask */ | |
b34976b6 | 1092 | FALSE), /* pcrel_offset */ |
252b5132 | 1093 | |
7619e7c7 AM |
1094 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1095 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1096 | 16, /* rightshift */ | |
1097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1098 | 16, /* bitsize */ | |
1099 | FALSE, /* pc_relative */ | |
1100 | 0, /* bitpos */ | |
1101 | complain_overflow_dont, /* complain_on_overflow */ | |
1102 | ppc_elf_unhandled_reloc, /* special_function */ | |
1103 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1104 | FALSE, /* partial_inplace */ | |
1105 | 0, /* src_mask */ | |
1106 | 0xffff, /* dst_mask */ | |
1107 | FALSE), /* pcrel_offset */ | |
252b5132 | 1108 | |
7619e7c7 AM |
1109 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1110 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1111 | 16, /* rightshift */ | |
1112 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 16, /* bitsize */ | |
1114 | FALSE, /* pc_relative */ | |
1115 | 0, /* bitpos */ | |
1116 | complain_overflow_dont, /* complain_on_overflow */ | |
1117 | ppc_elf_unhandled_reloc, /* special_function */ | |
1118 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1119 | FALSE, /* partial_inplace */ | |
1120 | 0, /* src_mask */ | |
1121 | 0xffff, /* dst_mask */ | |
1122 | FALSE), /* pcrel_offset */ | |
1123 | ||
1124 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1125 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1126 | first entry. */ | |
1127 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1128 | 0, /* rightshift */ |
1129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1130 | 16, /* bitsize */ | |
7619e7c7 | 1131 | FALSE, /* pc_relative */ |
252b5132 RH |
1132 | 0, /* bitpos */ |
1133 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1134 | ppc_elf_unhandled_reloc, /* special_function */ |
1135 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1136 | FALSE, /* partial_inplace */ |
252b5132 RH |
1137 | 0, /* src_mask */ |
1138 | 0xffff, /* dst_mask */ | |
b34976b6 | 1139 | FALSE), /* pcrel_offset */ |
252b5132 | 1140 | |
7619e7c7 AM |
1141 | /* Like GOT_TLSLD16, but no overflow. */ |
1142 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1143 | 0, /* rightshift */ |
7619e7c7 AM |
1144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1145 | 16, /* bitsize */ | |
b34976b6 | 1146 | FALSE, /* pc_relative */ |
252b5132 RH |
1147 | 0, /* bitpos */ |
1148 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1149 | ppc_elf_unhandled_reloc, /* special_function */ |
1150 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1151 | FALSE, /* partial_inplace */ |
252b5132 | 1152 | 0, /* src_mask */ |
7619e7c7 | 1153 | 0xffff, /* dst_mask */ |
b34976b6 | 1154 | FALSE), /* pcrel_offset */ |
252b5132 | 1155 | |
7619e7c7 AM |
1156 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1157 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1158 | 16, /* rightshift */ | |
1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 16, /* bitsize */ | |
b34976b6 | 1161 | FALSE, /* pc_relative */ |
252b5132 RH |
1162 | 0, /* bitpos */ |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1164 | ppc_elf_unhandled_reloc, /* special_function */ |
1165 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1166 | FALSE, /* partial_inplace */ |
252b5132 | 1167 | 0, /* src_mask */ |
7619e7c7 | 1168 | 0xffff, /* dst_mask */ |
b34976b6 | 1169 | FALSE), /* pcrel_offset */ |
252b5132 | 1170 | |
7619e7c7 AM |
1171 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1172 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1173 | 16, /* rightshift */ | |
1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 16, /* bitsize */ | |
1176 | FALSE, /* pc_relative */ | |
1177 | 0, /* bitpos */ | |
1178 | complain_overflow_dont, /* complain_on_overflow */ | |
1179 | ppc_elf_unhandled_reloc, /* special_function */ | |
1180 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1181 | FALSE, /* partial_inplace */ | |
1182 | 0, /* src_mask */ | |
1183 | 0xffff, /* dst_mask */ | |
1184 | FALSE), /* pcrel_offset */ | |
1185 | ||
1186 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1187 | the offset to the entry. */ | |
1188 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1189 | 0, /* rightshift */ |
1190 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1191 | 16, /* bitsize */ | |
b34976b6 | 1192 | FALSE, /* pc_relative */ |
252b5132 RH |
1193 | 0, /* bitpos */ |
1194 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1195 | ppc_elf_unhandled_reloc, /* special_function */ |
1196 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1197 | FALSE, /* partial_inplace */ |
252b5132 RH |
1198 | 0, /* src_mask */ |
1199 | 0xffff, /* dst_mask */ | |
b34976b6 | 1200 | FALSE), /* pcrel_offset */ |
252b5132 | 1201 | |
7619e7c7 AM |
1202 | /* Like GOT_DTPREL16, but no overflow. */ |
1203 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1204 | 0, /* rightshift */ | |
1205 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 16, /* bitsize */ | |
1207 | FALSE, /* pc_relative */ | |
1208 | 0, /* bitpos */ | |
1209 | complain_overflow_dont, /* complain_on_overflow */ | |
1210 | ppc_elf_unhandled_reloc, /* special_function */ | |
1211 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1212 | FALSE, /* partial_inplace */ | |
1213 | 0, /* src_mask */ | |
1214 | 0xffff, /* dst_mask */ | |
1215 | FALSE), /* pcrel_offset */ | |
252b5132 | 1216 | |
7619e7c7 AM |
1217 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1218 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1219 | 16, /* rightshift */ | |
1220 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1221 | 16, /* bitsize */ | |
1222 | FALSE, /* pc_relative */ | |
1223 | 0, /* bitpos */ | |
1224 | complain_overflow_dont, /* complain_on_overflow */ | |
1225 | ppc_elf_unhandled_reloc, /* special_function */ | |
1226 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1227 | FALSE, /* partial_inplace */ | |
1228 | 0, /* src_mask */ | |
1229 | 0xffff, /* dst_mask */ | |
1230 | FALSE), /* pcrel_offset */ | |
252b5132 | 1231 | |
7619e7c7 AM |
1232 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1233 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1234 | 16, /* rightshift */ | |
1235 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1236 | 16, /* bitsize */ | |
1237 | FALSE, /* pc_relative */ | |
1238 | 0, /* bitpos */ | |
1239 | complain_overflow_dont, /* complain_on_overflow */ | |
1240 | ppc_elf_unhandled_reloc, /* special_function */ | |
1241 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1242 | FALSE, /* partial_inplace */ | |
1243 | 0, /* src_mask */ | |
1244 | 0xffff, /* dst_mask */ | |
1245 | FALSE), /* pcrel_offset */ | |
c3668558 | 1246 | |
7619e7c7 AM |
1247 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1248 | offset to the entry. */ | |
1249 | HOWTO (R_PPC_GOT_TPREL16, | |
1250 | 0, /* rightshift */ | |
1251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 16, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
1255 | complain_overflow_signed, /* complain_on_overflow */ | |
1256 | ppc_elf_unhandled_reloc, /* special_function */ | |
1257 | "R_PPC_GOT_TPREL16", /* name */ | |
1258 | FALSE, /* partial_inplace */ | |
1259 | 0, /* src_mask */ | |
1260 | 0xffff, /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | /* Like GOT_TPREL16, but no overflow. */ | |
1264 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1265 | 0, /* rightshift */ | |
1266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1267 | 16, /* bitsize */ | |
1268 | FALSE, /* pc_relative */ | |
1269 | 0, /* bitpos */ | |
1270 | complain_overflow_dont, /* complain_on_overflow */ | |
1271 | ppc_elf_unhandled_reloc, /* special_function */ | |
1272 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1273 | FALSE, /* partial_inplace */ | |
1274 | 0, /* src_mask */ | |
1275 | 0xffff, /* dst_mask */ | |
1276 | FALSE), /* pcrel_offset */ | |
1277 | ||
1278 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1279 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1280 | 16, /* rightshift */ | |
1281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 16, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_dont, /* complain_on_overflow */ | |
1286 | ppc_elf_unhandled_reloc, /* special_function */ | |
1287 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0xffff, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
1293 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1294 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1295 | 16, /* rightshift */ | |
1296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1297 | 16, /* bitsize */ | |
1298 | FALSE, /* pc_relative */ | |
1299 | 0, /* bitpos */ | |
1300 | complain_overflow_dont, /* complain_on_overflow */ | |
1301 | ppc_elf_unhandled_reloc, /* special_function */ | |
1302 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1303 | FALSE, /* partial_inplace */ | |
1304 | 0, /* src_mask */ | |
1305 | 0xffff, /* dst_mask */ | |
1306 | FALSE), /* pcrel_offset */ | |
1307 | ||
1308 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1309 | in the SVR4 ELF ABI. */ | |
1310 | ||
1311 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1312 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 32, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_PPC_EMB_NADDR32", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0xffffffff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1327 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1328 | 0, /* rightshift */ | |
1329 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1330 | 16, /* bitsize */ | |
1331 | FALSE, /* pc_relative */ | |
1332 | 0, /* bitpos */ | |
1333 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1334 | bfd_elf_generic_reloc, /* special_function */ | |
1335 | "R_PPC_EMB_NADDR16", /* name */ | |
1336 | FALSE, /* partial_inplace */ | |
1337 | 0, /* src_mask */ | |
1338 | 0xffff, /* dst_mask */ | |
1339 | FALSE), /* pcrel_offset */ | |
1340 | ||
1341 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1342 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1343 | 0, /* rightshift */ | |
1344 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 16, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont,/* complain_on_overflow */ | |
1349 | bfd_elf_generic_reloc, /* special_function */ | |
1350 | "R_PPC_EMB_ADDR16_LO", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | 0xffff, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
1356 | /* The high order 16 bits of the addend minus the symbol. */ | |
1357 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1358 | 16, /* rightshift */ | |
1359 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 16, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
1365 | "R_PPC_EMB_NADDR16_HI", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0xffff, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | /* The high order 16 bits of the result of the addend minus the address, | |
1372 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1373 | is negative. */ | |
1374 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1375 | 16, /* rightshift */ | |
1376 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1377 | 16, /* bitsize */ | |
1378 | FALSE, /* pc_relative */ | |
1379 | 0, /* bitpos */ | |
1380 | complain_overflow_dont, /* complain_on_overflow */ | |
1381 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1382 | "R_PPC_EMB_NADDR16_HA", /* name */ | |
1383 | FALSE, /* partial_inplace */ | |
1384 | 0, /* src_mask */ | |
1385 | 0xffff, /* dst_mask */ | |
1386 | FALSE), /* pcrel_offset */ | |
1387 | ||
1388 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1389 | address in the .sdata section, and returning the offset from | |
1390 | _SDA_BASE_ for that relocation. */ | |
1391 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1392 | 0, /* rightshift */ | |
1393 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1394 | 16, /* bitsize */ | |
1395 | FALSE, /* pc_relative */ | |
1396 | 0, /* bitpos */ | |
1397 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1398 | bfd_elf_generic_reloc, /* special_function */ | |
1399 | "R_PPC_EMB_SDAI16", /* name */ | |
1400 | FALSE, /* partial_inplace */ | |
1401 | 0, /* src_mask */ | |
1402 | 0xffff, /* dst_mask */ | |
1403 | FALSE), /* pcrel_offset */ | |
1404 | ||
1405 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1406 | address in the .sdata2 section, and returning the offset from | |
1407 | _SDA2_BASE_ for that relocation. */ | |
1408 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1409 | 0, /* rightshift */ | |
1410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 16, /* bitsize */ | |
1412 | FALSE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1415 | bfd_elf_generic_reloc, /* special_function */ | |
1416 | "R_PPC_EMB_SDA2I16", /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | 0xffff, /* dst_mask */ | |
1420 | FALSE), /* pcrel_offset */ | |
1421 | ||
1422 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1423 | small data items. */ | |
1424 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1425 | 0, /* rightshift */ | |
1426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1427 | 16, /* bitsize */ | |
1428 | FALSE, /* pc_relative */ | |
1429 | 0, /* bitpos */ | |
1430 | complain_overflow_signed, /* complain_on_overflow */ | |
1431 | bfd_elf_generic_reloc, /* special_function */ | |
1432 | "R_PPC_EMB_SDA2REL", /* name */ | |
1433 | FALSE, /* partial_inplace */ | |
1434 | 0, /* src_mask */ | |
1435 | 0xffff, /* dst_mask */ | |
1436 | FALSE), /* pcrel_offset */ | |
1437 | ||
1438 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1439 | signed offset from the appropriate base, and filling in the register | |
1440 | field with the appropriate register (0, 2, or 13). */ | |
1441 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1442 | 0, /* rightshift */ | |
1443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1444 | 16, /* bitsize */ | |
1445 | FALSE, /* pc_relative */ | |
1446 | 0, /* bitpos */ | |
1447 | complain_overflow_signed, /* complain_on_overflow */ | |
1448 | bfd_elf_generic_reloc, /* special_function */ | |
1449 | "R_PPC_EMB_SDA21", /* name */ | |
1450 | FALSE, /* partial_inplace */ | |
1451 | 0, /* src_mask */ | |
1452 | 0xffff, /* dst_mask */ | |
1453 | FALSE), /* pcrel_offset */ | |
1454 | ||
1455 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1456 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1457 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1458 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1459 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1460 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1461 | ||
1462 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1463 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1464 | register field with the appropriate register (0, 2, or 13). */ | |
1465 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1466 | 0, /* rightshift */ | |
1467 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1468 | 16, /* bitsize */ | |
1469 | TRUE, /* pc_relative */ | |
1470 | 0, /* bitpos */ | |
1471 | complain_overflow_signed, /* complain_on_overflow */ | |
1472 | bfd_elf_generic_reloc, /* special_function */ | |
1473 | "R_PPC_EMB_RELSDA", /* name */ | |
1474 | FALSE, /* partial_inplace */ | |
1475 | 0, /* src_mask */ | |
1476 | 0xffff, /* dst_mask */ | |
1477 | FALSE), /* pcrel_offset */ | |
1478 | ||
1479 | /* GNU extension to record C++ vtable hierarchy. */ | |
1480 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1481 | 0, /* rightshift */ | |
1482 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1483 | 0, /* bitsize */ | |
1484 | FALSE, /* pc_relative */ | |
1485 | 0, /* bitpos */ | |
1486 | complain_overflow_dont, /* complain_on_overflow */ | |
1487 | NULL, /* special_function */ | |
1488 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1489 | FALSE, /* partial_inplace */ | |
1490 | 0, /* src_mask */ | |
1491 | 0, /* dst_mask */ | |
1492 | FALSE), /* pcrel_offset */ | |
1493 | ||
1494 | /* GNU extension to record C++ vtable member usage. */ | |
1495 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1496 | 0, /* rightshift */ | |
1497 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1498 | 0, /* bitsize */ | |
1499 | FALSE, /* pc_relative */ | |
1500 | 0, /* bitpos */ | |
1501 | complain_overflow_dont, /* complain_on_overflow */ | |
1502 | NULL, /* special_function */ | |
1503 | "R_PPC_GNU_VTENTRY", /* name */ | |
1504 | FALSE, /* partial_inplace */ | |
1505 | 0, /* src_mask */ | |
1506 | 0, /* dst_mask */ | |
1507 | FALSE), /* pcrel_offset */ | |
1508 | ||
1509 | /* Phony reloc to handle AIX style TOC entries. */ | |
1510 | HOWTO (R_PPC_TOC16, /* type */ | |
1511 | 0, /* rightshift */ | |
1512 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1513 | 16, /* bitsize */ | |
1514 | FALSE, /* pc_relative */ | |
1515 | 0, /* bitpos */ | |
1516 | complain_overflow_signed, /* complain_on_overflow */ | |
1517 | bfd_elf_generic_reloc, /* special_function */ | |
1518 | "R_PPC_TOC16", /* name */ | |
1519 | FALSE, /* partial_inplace */ | |
1520 | 0, /* src_mask */ | |
1521 | 0xffff, /* dst_mask */ | |
1522 | FALSE), /* pcrel_offset */ | |
1523 | }; | |
1524 | \f | |
1525 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1526 | ||
1527 | static void | |
55fd94b0 | 1528 | ppc_elf_howto_init (void) |
7619e7c7 AM |
1529 | { |
1530 | unsigned int i, type; | |
1531 | ||
fc0bffd6 AM |
1532 | for (i = 0; |
1533 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1534 | i++) | |
7619e7c7 AM |
1535 | { |
1536 | type = ppc_elf_howto_raw[i].type; | |
fc0bffd6 AM |
1537 | if (type >= (sizeof (ppc_elf_howto_table) |
1538 | / sizeof (ppc_elf_howto_table[0]))) | |
1539 | abort (); | |
7619e7c7 AM |
1540 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; |
1541 | } | |
1542 | } | |
1543 | \f | |
1544 | /* This function handles relaxing for the PPC with option --mpc860c0[=<n>]. | |
1545 | ||
1546 | The MPC860, revision C0 or earlier contains a bug in the die. | |
1547 | If all of the following conditions are true, the next instruction | |
1548 | to be executed *may* be treated as a no-op. | |
1549 | 1/ A forward branch is executed. | |
1550 | 2/ The branch is predicted as not taken. | |
1551 | 3/ The branch is taken. | |
1552 | 4/ The branch is located in the last 5 words of a page. | |
fc0bffd6 AM |
1553 | (The EOP limit is 5 by default but may be specified as any value |
1554 | from 1-10.) | |
7619e7c7 AM |
1555 | |
1556 | Our software solution is to detect these problematic branches in a | |
1557 | linker pass and modify them as follows: | |
1558 | 1/ Unconditional branches - Since these are always predicted taken, | |
252b5132 RH |
1559 | there is no problem and no action is required. |
1560 | 2/ Conditional backward branches - No problem, no action required. | |
1561 | 3/ Conditional forward branches - Ensure that the "inverse prediction | |
1562 | bit" is set (ensure it is predicted taken). | |
1563 | 4/ Conditional register branches - Ensure that the "y bit" is set | |
ae9a127f | 1564 | (ensure it is predicted taken). */ |
252b5132 RH |
1565 | |
1566 | /* Sort sections by address. */ | |
1567 | ||
1568 | static int | |
55fd94b0 | 1569 | ppc_elf_sort_rela (const void *arg1, const void *arg2) |
252b5132 | 1570 | { |
55fd94b0 AM |
1571 | const Elf_Internal_Rela * const *rela1 = arg1; |
1572 | const Elf_Internal_Rela * const *rela2 = arg2; | |
252b5132 | 1573 | |
c3668558 | 1574 | /* Sort by offset. */ |
252b5132 RH |
1575 | return ((*rela1)->r_offset - (*rela2)->r_offset); |
1576 | } | |
1577 | ||
b34976b6 | 1578 | static bfd_boolean |
55fd94b0 AM |
1579 | ppc_elf_relax_section (bfd *abfd, |
1580 | asection *isec, | |
1581 | struct bfd_link_info *link_info, | |
1582 | bfd_boolean *again) | |
252b5132 RH |
1583 | { |
1584 | #define PAGESIZE 0x1000 | |
1585 | ||
1586 | bfd_byte *contents = NULL; | |
1587 | bfd_byte *free_contents = NULL; | |
1588 | Elf_Internal_Rela *internal_relocs = NULL; | |
1589 | Elf_Internal_Rela *free_relocs = NULL; | |
1590 | Elf_Internal_Rela **rela_comb = NULL; | |
1591 | int comb_curr, comb_count; | |
1592 | ||
c3668558 | 1593 | /* We never have to do this more than once per input section. */ |
b34976b6 | 1594 | *again = FALSE; |
252b5132 RH |
1595 | |
1596 | /* If needed, initialize this section's cooked size. */ | |
1597 | if (isec->_cooked_size == 0) | |
70bccea4 | 1598 | isec->_cooked_size = isec->_raw_size; |
252b5132 RH |
1599 | |
1600 | /* We're only interested in text sections which overlap the | |
8da6118f | 1601 | troublesome area at the end of a page. */ |
252b5132 RH |
1602 | if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size) |
1603 | { | |
1604 | bfd_vma dot, end_page, end_section; | |
b34976b6 | 1605 | bfd_boolean section_modified; |
252b5132 | 1606 | |
c3668558 | 1607 | /* Get the section contents. */ |
252b5132 RH |
1608 | /* Get cached copy if it exists. */ |
1609 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
70bccea4 | 1610 | contents = elf_section_data (isec)->this_hdr.contents; |
252b5132 RH |
1611 | else |
1612 | { | |
1613 | /* Go get them off disk. */ | |
55fd94b0 | 1614 | contents = bfd_malloc (isec->_raw_size); |
252b5132 | 1615 | if (contents == NULL) |
8da6118f | 1616 | goto error_return; |
252b5132 RH |
1617 | free_contents = contents; |
1618 | ||
1619 | if (! bfd_get_section_contents (abfd, isec, contents, | |
1620 | (file_ptr) 0, isec->_raw_size)) | |
8da6118f | 1621 | goto error_return; |
252b5132 RH |
1622 | } |
1623 | ||
1624 | comb_curr = 0; | |
1625 | comb_count = 0; | |
1626 | if (isec->reloc_count) | |
8da6118f | 1627 | { |
70bccea4 | 1628 | unsigned n; |
dc810e39 | 1629 | bfd_size_type amt; |
252b5132 | 1630 | |
70bccea4 AM |
1631 | /* Get a copy of the native relocations. */ |
1632 | internal_relocs | |
55fd94b0 | 1633 | = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
45d6a902 | 1634 | link_info->keep_memory); |
70bccea4 AM |
1635 | if (internal_relocs == NULL) |
1636 | goto error_return; | |
1637 | if (! link_info->keep_memory) | |
1638 | free_relocs = internal_relocs; | |
c3668558 | 1639 | |
70bccea4 | 1640 | /* Setup a faster access method for the reloc info we need. */ |
dc810e39 AM |
1641 | amt = isec->reloc_count; |
1642 | amt *= sizeof (Elf_Internal_Rela*); | |
55fd94b0 | 1643 | rela_comb = bfd_malloc (amt); |
70bccea4 AM |
1644 | if (rela_comb == NULL) |
1645 | goto error_return; | |
1646 | for (n = 0; n < isec->reloc_count; ++n) | |
1647 | { | |
55fd94b0 | 1648 | enum elf_ppc_reloc_type r_type; |
70bccea4 AM |
1649 | |
1650 | r_type = ELF32_R_TYPE (internal_relocs[n].r_info); | |
55fd94b0 | 1651 | if (r_type >= R_PPC_max) |
70bccea4 AM |
1652 | goto error_return; |
1653 | ||
1654 | /* Prologue constants are sometimes present in the ".text" | |
1655 | sections and they can be identified by their associated | |
1656 | relocation. We don't want to process those words and | |
1657 | some others which can also be identified by their | |
1658 | relocations. However, not all conditional branches will | |
1659 | have a relocation so we will only ignore words that | |
1660 | 1) have a reloc, and 2) the reloc is not applicable to a | |
1661 | conditional branch. The array rela_comb is built here | |
1662 | for use in the EOP scan loop. */ | |
1663 | switch (r_type) | |
1664 | { | |
1665 | case R_PPC_ADDR14_BRNTAKEN: | |
1666 | case R_PPC_REL14: | |
1667 | case R_PPC_REL14_BRNTAKEN: | |
1668 | /* We should check the instruction. */ | |
1669 | break; | |
1670 | default: | |
1671 | /* The word is not a conditional branch - ignore it. */ | |
1672 | rela_comb[comb_count++] = &internal_relocs[n]; | |
1673 | break; | |
1674 | } | |
1675 | } | |
1676 | if (comb_count > 1) | |
1677 | qsort (rela_comb, (size_t) comb_count, sizeof (int), | |
1678 | ppc_elf_sort_rela); | |
8da6118f | 1679 | } |
252b5132 | 1680 | |
c3668558 | 1681 | /* Enumerate each EOP region that overlaps this section. */ |
252b5132 RH |
1682 | end_section = isec->vma + isec->_cooked_size; |
1683 | dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1; | |
1684 | dot -= link_info->mpc860c0; | |
b34976b6 | 1685 | section_modified = FALSE; |
70bccea4 AM |
1686 | /* Increment the start position if this section begins in the |
1687 | middle of its first EOP region. */ | |
1688 | if (dot < isec->vma) | |
1689 | dot = isec->vma; | |
252b5132 | 1690 | for (; |
70bccea4 AM |
1691 | dot < end_section; |
1692 | dot += PAGESIZE, end_page += PAGESIZE) | |
1693 | { | |
1694 | /* Check each word in this EOP region. */ | |
1695 | for (; dot < end_page; dot += 4) | |
1696 | { | |
1697 | bfd_vma isec_offset; | |
1698 | unsigned long insn; | |
1699 | bfd_boolean skip, modified; | |
1700 | ||
1701 | /* Don't process this word if there is a relocation for it | |
1702 | and the relocation indicates the word is not a | |
1703 | conditional branch. */ | |
1704 | skip = FALSE; | |
1705 | isec_offset = dot - isec->vma; | |
1706 | for (; comb_curr<comb_count; ++comb_curr) | |
1707 | { | |
1708 | bfd_vma r_offset; | |
1709 | ||
1710 | r_offset = rela_comb[comb_curr]->r_offset; | |
1711 | if (r_offset >= isec_offset) | |
1712 | { | |
1713 | if (r_offset == isec_offset) skip = TRUE; | |
1714 | break; | |
1715 | } | |
1716 | } | |
1717 | if (skip) continue; | |
1718 | ||
1719 | /* Check the current word for a problematic conditional | |
1720 | branch. */ | |
252b5132 RH |
1721 | #define BO0(insn) ((insn) & 0x02000000) |
1722 | #define BO2(insn) ((insn) & 0x00800000) | |
1723 | #define BO4(insn) ((insn) & 0x00200000) | |
70bccea4 AM |
1724 | insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset); |
1725 | modified = FALSE; | |
1726 | if ((insn & 0xFc000000) == 0x40000000) | |
1727 | { | |
1728 | /* Instruction is BCx */ | |
1729 | if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) | |
1730 | { | |
1731 | bfd_vma target; | |
252b5132 | 1732 | |
70bccea4 AM |
1733 | /* This branch is predicted as "normal". |
1734 | If this is a forward branch, it is problematic. */ | |
1735 | target = insn & 0x0000Fffc; | |
1736 | target = (target ^ 0x8000) - 0x8000; | |
1737 | if ((insn & 0x00000002) == 0) | |
1738 | /* Convert to abs. */ | |
1739 | target += dot; | |
1740 | if (target > dot) | |
1741 | { | |
1742 | /* Set the prediction bit. */ | |
1743 | insn |= 0x00200000; | |
1744 | modified = TRUE; | |
1745 | } | |
1746 | } | |
1747 | } | |
1748 | else if ((insn & 0xFc00Fffe) == 0x4c000420) | |
1749 | { | |
1750 | /* Instruction is BCCTRx. */ | |
1751 | if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) | |
252b5132 RH |
1752 | { |
1753 | /* This branch is predicted as not-taken. | |
ae9a127f | 1754 | If this is a forward branch, it is problematic. |
70bccea4 AM |
1755 | Since we can't tell statically if it will branch |
1756 | forward, always set the prediction bit. */ | |
1757 | insn |= 0x00200000; | |
1758 | modified = TRUE; | |
252b5132 | 1759 | } |
70bccea4 AM |
1760 | } |
1761 | else if ((insn & 0xFc00Fffe) == 0x4c000020) | |
1762 | { | |
1763 | /* Instruction is BCLRx */ | |
1764 | if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) | |
252b5132 RH |
1765 | { |
1766 | /* This branch is predicted as not-taken. | |
ae9a127f | 1767 | If this is a forward branch, it is problematic. |
70bccea4 AM |
1768 | Since we can't tell statically if it will branch |
1769 | forward, always set the prediction bit. */ | |
1770 | insn |= 0x00200000; | |
1771 | modified = TRUE; | |
252b5132 | 1772 | } |
70bccea4 | 1773 | } |
252b5132 RH |
1774 | #undef BO0 |
1775 | #undef BO2 | |
1776 | #undef BO4 | |
70bccea4 AM |
1777 | if (modified) |
1778 | { | |
55fd94b0 | 1779 | bfd_put_32 (abfd, insn, contents + isec_offset); |
b34976b6 | 1780 | section_modified = TRUE; |
70bccea4 AM |
1781 | } |
1782 | } | |
1783 | } | |
252b5132 RH |
1784 | if (section_modified) |
1785 | { | |
1786 | elf_section_data (isec)->this_hdr.contents = contents; | |
1787 | free_contents = NULL; | |
1788 | } | |
1789 | } | |
1790 | ||
1791 | if (rela_comb != NULL) | |
1792 | { | |
1793 | free (rela_comb); | |
1794 | rela_comb = NULL; | |
1795 | } | |
1796 | ||
1797 | if (free_relocs != NULL) | |
1798 | { | |
1799 | free (free_relocs); | |
1800 | free_relocs = NULL; | |
1801 | } | |
1802 | ||
1803 | if (free_contents != NULL) | |
1804 | { | |
1805 | if (! link_info->keep_memory) | |
1806 | free (free_contents); | |
1807 | else | |
1808 | { | |
1809 | /* Cache the section contents for elf_link_input_bfd. */ | |
1810 | elf_section_data (isec)->this_hdr.contents = contents; | |
1811 | } | |
1812 | free_contents = NULL; | |
1813 | } | |
1814 | ||
b34976b6 | 1815 | return TRUE; |
252b5132 | 1816 | |
70bccea4 | 1817 | error_return: |
252b5132 RH |
1818 | if (rela_comb != NULL) |
1819 | free (rela_comb); | |
1820 | if (free_relocs != NULL) | |
1821 | free (free_relocs); | |
1822 | if (free_contents != NULL) | |
1823 | free (free_contents); | |
b34976b6 | 1824 | return FALSE; |
252b5132 | 1825 | } |
252b5132 RH |
1826 | \f |
1827 | static reloc_howto_type * | |
55fd94b0 AM |
1828 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1829 | bfd_reloc_code_real_type code) | |
252b5132 | 1830 | { |
7619e7c7 | 1831 | enum elf_ppc_reloc_type r; |
252b5132 | 1832 | |
e47cd125 | 1833 | /* Initialize howto table if not already done. */ |
252b5132 | 1834 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
1835 | ppc_elf_howto_init (); |
1836 | ||
55fd94b0 | 1837 | switch (code) |
252b5132 RH |
1838 | { |
1839 | default: | |
55fd94b0 | 1840 | return NULL; |
252b5132 | 1841 | |
7619e7c7 AM |
1842 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; |
1843 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1844 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1845 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; | |
1846 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; | |
1847 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1848 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1849 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1850 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1851 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1852 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1853 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1854 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1855 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1856 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; | |
1857 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; | |
1858 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1859 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1860 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1861 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1862 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1863 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1864 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1865 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1866 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1867 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; | |
1868 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1869 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1870 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1871 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; | |
1872 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; | |
1873 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1874 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1875 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1876 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; | |
1877 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
1878 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; | |
1879 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; | |
1880 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; | |
1881 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1882 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1883 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1884 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; | |
1885 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; | |
1886 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1887 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1888 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1889 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1890 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1891 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1892 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1893 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1894 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1895 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1896 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1897 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1898 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1899 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1900 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1901 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1902 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1903 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1904 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1905 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1906 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1907 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1908 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1909 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1910 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1911 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1912 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1913 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1914 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1915 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1916 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1917 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1918 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1919 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1920 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
1921 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; | |
1922 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
252b5132 RH |
1923 | } |
1924 | ||
55fd94b0 | 1925 | return ppc_elf_howto_table[r]; |
252b5132 RH |
1926 | }; |
1927 | ||
1928 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1929 | ||
1930 | static void | |
55fd94b0 AM |
1931 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
1932 | arelent *cache_ptr, | |
1933 | Elf_Internal_Rela *dst) | |
252b5132 | 1934 | { |
e47cd125 | 1935 | /* Initialize howto table if not already done. */ |
8da6118f | 1936 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
1937 | ppc_elf_howto_init (); |
1938 | ||
1939 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1940 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1941 | } | |
1942 | ||
1943 | /* Handle the R_PPC_ADDR16_HA reloc. */ | |
1944 | ||
1945 | static bfd_reloc_status_type | |
55fd94b0 AM |
1946 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1947 | arelent *reloc_entry, | |
1948 | asymbol *symbol, | |
1949 | void *data ATTRIBUTE_UNUSED, | |
1950 | asection *input_section, | |
1951 | bfd *output_bfd, | |
1952 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
1953 | { |
1954 | bfd_vma relocation; | |
1955 | ||
1956 | if (output_bfd != NULL) | |
1957 | { | |
1958 | reloc_entry->address += input_section->output_offset; | |
1959 | return bfd_reloc_ok; | |
1960 | } | |
1961 | ||
1962 | if (reloc_entry->address > input_section->_cooked_size) | |
1963 | return bfd_reloc_outofrange; | |
1964 | ||
1965 | if (bfd_is_com_section (symbol->section)) | |
1966 | relocation = 0; | |
1967 | else | |
1968 | relocation = symbol->value; | |
1969 | ||
1970 | relocation += symbol->section->output_section->vma; | |
1971 | relocation += symbol->section->output_offset; | |
1972 | relocation += reloc_entry->addend; | |
1973 | ||
1974 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1975 | ||
1976 | return bfd_reloc_continue; | |
1977 | } | |
1978 | ||
7619e7c7 | 1979 | static bfd_reloc_status_type |
55fd94b0 AM |
1980 | ppc_elf_unhandled_reloc (bfd *abfd, |
1981 | arelent *reloc_entry, | |
1982 | asymbol *symbol, | |
1983 | void *data, | |
1984 | asection *input_section, | |
1985 | bfd *output_bfd, | |
1986 | char **error_message) | |
7619e7c7 AM |
1987 | { |
1988 | /* If this is a relocatable link (output_bfd test tells us), just | |
1989 | call the generic function. Any adjustment will be done at final | |
1990 | link time. */ | |
1991 | if (output_bfd != NULL) | |
1992 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1993 | input_section, output_bfd, error_message); | |
1994 | ||
1995 | if (error_message != NULL) | |
1996 | { | |
1997 | static char buf[60]; | |
55fd94b0 | 1998 | sprintf (buf, _("generic linker can't handle %s"), |
7619e7c7 AM |
1999 | reloc_entry->howto->name); |
2000 | *error_message = buf; | |
2001 | } | |
2002 | return bfd_reloc_dangerous; | |
2003 | } | |
2004 | ||
feee612b AM |
2005 | /* Fix bad default arch selected for a 32 bit input bfd when the |
2006 | default is 64 bit. */ | |
2007 | ||
b34976b6 | 2008 | static bfd_boolean |
55fd94b0 | 2009 | ppc_elf_object_p (bfd *abfd) |
feee612b AM |
2010 | { |
2011 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
2012 | { | |
2013 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2014 | ||
2015 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) | |
2016 | { | |
2017 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2018 | abfd->arch_info = abfd->arch_info->next; | |
2019 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2020 | } | |
2021 | } | |
b34976b6 | 2022 | return TRUE; |
feee612b AM |
2023 | } |
2024 | ||
c3668558 | 2025 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
252b5132 | 2026 | |
b34976b6 | 2027 | static bfd_boolean |
55fd94b0 | 2028 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
2029 | { |
2030 | BFD_ASSERT (!elf_flags_init (abfd) | |
2031 | || elf_elfheader (abfd)->e_flags == flags); | |
2032 | ||
2033 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
2034 | elf_flags_init (abfd) = TRUE; |
2035 | return TRUE; | |
252b5132 RH |
2036 | } |
2037 | ||
252b5132 | 2038 | /* Merge backend specific data from an object file to the output |
ae9a127f NC |
2039 | object file when linking. */ |
2040 | ||
b34976b6 | 2041 | static bfd_boolean |
55fd94b0 | 2042 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
2043 | { |
2044 | flagword old_flags; | |
2045 | flagword new_flags; | |
b34976b6 | 2046 | bfd_boolean error; |
252b5132 | 2047 | |
ae9a127f | 2048 | /* Check if we have the same endianess. */ |
82e51918 | 2049 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 2050 | return FALSE; |
252b5132 RH |
2051 | |
2052 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2053 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 2054 | return TRUE; |
252b5132 RH |
2055 | |
2056 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2057 | old_flags = elf_elfheader (obfd)->e_flags; | |
70bccea4 | 2058 | if (!elf_flags_init (obfd)) |
252b5132 | 2059 | { |
70bccea4 | 2060 | /* First call, no flags set. */ |
b34976b6 | 2061 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
2062 | elf_elfheader (obfd)->e_flags = new_flags; |
2063 | } | |
2064 | ||
70bccea4 AM |
2065 | /* Compatible flags are ok. */ |
2066 | else if (new_flags == old_flags) | |
252b5132 RH |
2067 | ; |
2068 | ||
70bccea4 AM |
2069 | /* Incompatible flags. */ |
2070 | else | |
252b5132 | 2071 | { |
70bccea4 AM |
2072 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib |
2073 | to be linked with either. */ | |
b34976b6 | 2074 | error = FALSE; |
252b5132 RH |
2075 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 |
2076 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
2077 | { | |
b34976b6 | 2078 | error = TRUE; |
252b5132 | 2079 | (*_bfd_error_handler) |
55fd94b0 AM |
2080 | (_("%s: compiled with -mrelocatable and linked with " |
2081 | "modules compiled normally"), | |
8f615d07 | 2082 | bfd_archive_filename (ibfd)); |
252b5132 RH |
2083 | } |
2084 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
2085 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
2086 | { | |
b34976b6 | 2087 | error = TRUE; |
252b5132 | 2088 | (*_bfd_error_handler) |
55fd94b0 AM |
2089 | (_("%s: compiled normally and linked with " |
2090 | "modules compiled with -mrelocatable"), | |
8f615d07 | 2091 | bfd_archive_filename (ibfd)); |
252b5132 RH |
2092 | } |
2093 | ||
2094 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
2095 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
2096 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
2097 | ||
2098 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
70bccea4 | 2099 | but each input file is either -mrelocatable or -mrelocatable-lib. */ |
252b5132 RH |
2100 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) |
2101 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
2102 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
2103 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
2104 | ||
70bccea4 AM |
2105 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if |
2106 | any module uses it. */ | |
252b5132 RH |
2107 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); |
2108 | ||
70bccea4 AM |
2109 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); |
2110 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
252b5132 | 2111 | |
ae9a127f | 2112 | /* Warn about any other mismatches. */ |
252b5132 RH |
2113 | if (new_flags != old_flags) |
2114 | { | |
b34976b6 | 2115 | error = TRUE; |
252b5132 | 2116 | (*_bfd_error_handler) |
55fd94b0 AM |
2117 | (_("%s: uses different e_flags (0x%lx) fields " |
2118 | "than previous modules (0x%lx)"), | |
8f615d07 | 2119 | bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); |
252b5132 RH |
2120 | } |
2121 | ||
2122 | if (error) | |
2123 | { | |
2124 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2125 | return FALSE; |
252b5132 RH |
2126 | } |
2127 | } | |
2128 | ||
b34976b6 | 2129 | return TRUE; |
252b5132 | 2130 | } |
252b5132 RH |
2131 | \f |
2132 | /* Handle a PowerPC specific section when reading an object file. This | |
2133 | is called when elfcode.h finds a section with an unknown type. */ | |
2134 | ||
b34976b6 | 2135 | static bfd_boolean |
55fd94b0 | 2136 | ppc_elf_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name) |
252b5132 RH |
2137 | { |
2138 | asection *newsect; | |
2139 | flagword flags; | |
2140 | ||
2141 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 2142 | return FALSE; |
252b5132 RH |
2143 | |
2144 | newsect = hdr->bfd_section; | |
2145 | flags = bfd_get_section_flags (abfd, newsect); | |
2146 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2147 | flags |= SEC_EXCLUDE; | |
2148 | ||
2149 | if (hdr->sh_type == SHT_ORDERED) | |
2150 | flags |= SEC_SORT_ENTRIES; | |
2151 | ||
2152 | bfd_set_section_flags (abfd, newsect, flags); | |
b34976b6 | 2153 | return TRUE; |
252b5132 | 2154 | } |
252b5132 RH |
2155 | \f |
2156 | /* Set up any other section flags and such that may be necessary. */ | |
2157 | ||
b34976b6 | 2158 | static bfd_boolean |
55fd94b0 AM |
2159 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2160 | Elf_Internal_Shdr *shdr, | |
2161 | asection *asect) | |
252b5132 RH |
2162 | { |
2163 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
2164 | shdr->sh_flags |= SHF_EXCLUDE; | |
2165 | ||
2166 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
2167 | shdr->sh_type = SHT_ORDERED; | |
2168 | ||
b34976b6 | 2169 | return TRUE; |
252b5132 | 2170 | } |
252b5132 | 2171 | \f |
3dab13f6 AM |
2172 | /* Create a special linker section, or return a pointer to a linker |
2173 | section already created */ | |
2174 | ||
2175 | static elf_linker_section_t * | |
2176 | elf_create_linker_section (bfd *abfd, | |
2177 | struct bfd_link_info *info, | |
2178 | enum elf_linker_section_enum which, | |
2179 | elf_linker_section_t *defaults) | |
2180 | { | |
2181 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
2182 | elf_linker_section_t *lsect; | |
2183 | ||
2184 | /* Record the first bfd section that needs the special section */ | |
2185 | if (!dynobj) | |
2186 | dynobj = elf_hash_table (info)->dynobj = abfd; | |
2187 | ||
2188 | /* If this is the first time, create the section */ | |
2189 | lsect = elf_linker_section (dynobj, which); | |
2190 | if (!lsect) | |
2191 | { | |
2192 | asection *s; | |
2193 | bfd_size_type amt = sizeof (elf_linker_section_t); | |
2194 | ||
2195 | lsect = bfd_alloc (dynobj, amt); | |
2196 | ||
2197 | *lsect = *defaults; | |
2198 | elf_linker_section (dynobj, which) = lsect; | |
2199 | lsect->which = which; | |
2200 | lsect->hole_written_p = FALSE; | |
2201 | ||
2202 | /* See if the sections already exist */ | |
2203 | lsect->section = s = bfd_get_section_by_name (dynobj, lsect->name); | |
2204 | if (!s || (s->flags & defaults->flags) != defaults->flags) | |
2205 | { | |
2206 | lsect->section = s = bfd_make_section_anyway (dynobj, lsect->name); | |
2207 | ||
2208 | if (s == NULL) | |
2209 | return NULL; | |
2210 | ||
2211 | bfd_set_section_flags (dynobj, s, defaults->flags); | |
2212 | bfd_set_section_alignment (dynobj, s, lsect->alignment); | |
2213 | } | |
2214 | else if (bfd_get_section_alignment (dynobj, s) < lsect->alignment) | |
2215 | bfd_set_section_alignment (dynobj, s, lsect->alignment); | |
2216 | ||
2217 | s->_raw_size = align_power (s->_raw_size, lsect->alignment); | |
2218 | ||
2219 | /* Is there a hole we have to provide? If so check whether the | |
2220 | segment is too big already */ | |
2221 | if (lsect->hole_size) | |
2222 | { | |
2223 | lsect->hole_offset = s->_raw_size; | |
2224 | s->_raw_size += lsect->hole_size; | |
2225 | if (lsect->hole_offset > lsect->max_hole_offset) | |
2226 | { | |
2227 | (*_bfd_error_handler) | |
2228 | (_("%s: Section %s is too large to add hole of %ld bytes"), | |
2229 | bfd_get_filename (abfd), | |
2230 | lsect->name, | |
2231 | (long) lsect->hole_size); | |
2232 | ||
2233 | bfd_set_error (bfd_error_bad_value); | |
2234 | return NULL; | |
2235 | } | |
2236 | } | |
2237 | ||
2238 | #ifdef DEBUG | |
2239 | fprintf (stderr, "Creating section %s, current size = %ld\n", | |
2240 | lsect->name, (long) s->_raw_size); | |
2241 | #endif | |
2242 | ||
2243 | if (lsect->sym_name) | |
2244 | { | |
2245 | struct elf_link_hash_entry *h; | |
2246 | struct bfd_link_hash_entry *bh; | |
2247 | ||
2248 | #ifdef DEBUG | |
2249 | fprintf (stderr, "Adding %s to section %s\n", | |
2250 | lsect->sym_name, | |
2251 | lsect->name); | |
2252 | #endif | |
2253 | bh = bfd_link_hash_lookup (info->hash, lsect->sym_name, | |
2254 | FALSE, FALSE, FALSE); | |
2255 | ||
2256 | if ((bh == NULL || bh->type == bfd_link_hash_undefined) | |
2257 | && !(_bfd_generic_link_add_one_symbol | |
2258 | (info, abfd, lsect->sym_name, BSF_GLOBAL, s, | |
2259 | (lsect->hole_size | |
2260 | ? s->_raw_size - lsect->hole_size + lsect->sym_offset | |
2261 | : lsect->sym_offset), | |
2262 | NULL, FALSE, | |
2263 | get_elf_backend_data (abfd)->collect, &bh))) | |
2264 | return NULL; | |
2265 | h = (struct elf_link_hash_entry *) bh; | |
2266 | ||
2267 | if ((defaults->which != LINKER_SECTION_SDATA) | |
2268 | && (defaults->which != LINKER_SECTION_SDATA2)) | |
2269 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_DYNAMIC; | |
2270 | ||
2271 | h->type = STT_OBJECT; | |
2272 | lsect->sym_hash = h; | |
2273 | ||
2274 | if (info->shared | |
2275 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
2276 | return NULL; | |
2277 | } | |
2278 | } | |
2279 | ||
2280 | return lsect; | |
2281 | } | |
2282 | \f | |
2283 | /* Find a linker generated pointer with a given addend and type. */ | |
2284 | ||
2285 | static elf_linker_section_pointers_t * | |
2286 | elf_find_pointer_linker_section | |
2287 | (elf_linker_section_pointers_t *linker_pointers, | |
2288 | bfd_vma addend, | |
2289 | elf_linker_section_enum_t which) | |
2290 | { | |
2291 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) | |
2292 | if (which == linker_pointers->which && addend == linker_pointers->addend) | |
2293 | return linker_pointers; | |
2294 | ||
2295 | return NULL; | |
2296 | } | |
2297 | \f | |
2298 | /* Allocate a pointer to live in a linker created section. */ | |
2299 | ||
2300 | static bfd_boolean | |
2301 | elf_create_pointer_linker_section (bfd *abfd, | |
2302 | struct bfd_link_info *info, | |
2303 | elf_linker_section_t *lsect, | |
2304 | struct elf_link_hash_entry *h, | |
2305 | const Elf_Internal_Rela *rel) | |
2306 | { | |
2307 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2308 | elf_linker_section_pointers_t *linker_section_ptr; | |
2309 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2310 | bfd_size_type amt; | |
2311 | ||
2312 | BFD_ASSERT (lsect != NULL); | |
2313 | ||
2314 | /* Is this a global symbol? */ | |
2315 | if (h != NULL) | |
2316 | { | |
2317 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2318 | if (elf_find_pointer_linker_section (h->linker_section_pointer, | |
2319 | rel->r_addend, | |
2320 | lsect->which)) | |
2321 | return TRUE; | |
2322 | ||
2323 | ptr_linker_section_ptr = &h->linker_section_pointer; | |
2324 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2325 | if (h->dynindx == -1) | |
2326 | { | |
2327 | if (! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
2328 | return FALSE; | |
2329 | } | |
2330 | ||
2331 | if (lsect->rel_section) | |
2332 | lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela); | |
2333 | } | |
2334 | else | |
2335 | { | |
2336 | /* Allocation of a pointer to a local symbol. */ | |
2337 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2338 | ||
2339 | /* Allocate a table to hold the local symbols if first time. */ | |
2340 | if (!ptr) | |
2341 | { | |
2342 | unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; | |
2343 | register unsigned int i; | |
2344 | ||
2345 | amt = num_symbols; | |
2346 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2347 | ptr = bfd_alloc (abfd, amt); | |
2348 | ||
2349 | if (!ptr) | |
2350 | return FALSE; | |
2351 | ||
2352 | elf_local_ptr_offsets (abfd) = ptr; | |
2353 | for (i = 0; i < num_symbols; i++) | |
2354 | ptr[i] = NULL; | |
2355 | } | |
2356 | ||
2357 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2358 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2359 | rel->r_addend, | |
2360 | lsect->which)) | |
2361 | return TRUE; | |
2362 | ||
2363 | ptr_linker_section_ptr = &ptr[r_symndx]; | |
2364 | ||
2365 | if (info->shared) | |
2366 | { | |
2367 | /* If we are generating a shared object, we need to | |
2368 | output a R_<xxx>_RELATIVE reloc so that the | |
2369 | dynamic linker can adjust this GOT entry. */ | |
2370 | BFD_ASSERT (lsect->rel_section != NULL); | |
2371 | lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela); | |
2372 | } | |
2373 | } | |
2374 | ||
2375 | /* Allocate space for a pointer in the linker section, and allocate | |
2376 | a new pointer record from internal memory. */ | |
2377 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2378 | amt = sizeof (elf_linker_section_pointers_t); | |
2379 | linker_section_ptr = bfd_alloc (abfd, amt); | |
2380 | ||
2381 | if (!linker_section_ptr) | |
2382 | return FALSE; | |
2383 | ||
2384 | linker_section_ptr->next = *ptr_linker_section_ptr; | |
2385 | linker_section_ptr->addend = rel->r_addend; | |
2386 | linker_section_ptr->which = lsect->which; | |
2387 | linker_section_ptr->written_address_p = FALSE; | |
2388 | *ptr_linker_section_ptr = linker_section_ptr; | |
2389 | ||
2390 | linker_section_ptr->offset = lsect->section->_raw_size; | |
2391 | lsect->section->_raw_size += 4; | |
2392 | ||
2393 | #ifdef DEBUG | |
2394 | fprintf (stderr, | |
2395 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2396 | lsect->name, (long) linker_section_ptr->offset, | |
2397 | (long) lsect->section->_raw_size); | |
2398 | #endif | |
2399 | ||
2400 | return TRUE; | |
2401 | } | |
2402 | \f | |
2403 | #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR) | |
2404 | ||
2405 | /* Fill in the address for a pointer generated in a linker section. */ | |
2406 | ||
2407 | static bfd_vma | |
2408 | elf_finish_pointer_linker_section (bfd *output_bfd, | |
2409 | bfd *input_bfd, | |
2410 | struct bfd_link_info *info, | |
2411 | elf_linker_section_t *lsect, | |
2412 | struct elf_link_hash_entry *h, | |
2413 | bfd_vma relocation, | |
2414 | const Elf_Internal_Rela *rel, | |
2415 | int relative_reloc) | |
2416 | { | |
2417 | elf_linker_section_pointers_t *linker_section_ptr; | |
2418 | ||
2419 | BFD_ASSERT (lsect != NULL); | |
2420 | ||
2421 | if (h != NULL) | |
2422 | { | |
2423 | /* Handle global symbol. */ | |
2424 | linker_section_ptr | |
2425 | = elf_find_pointer_linker_section (h->linker_section_pointer, | |
2426 | rel->r_addend, | |
2427 | lsect->which); | |
2428 | ||
2429 | BFD_ASSERT (linker_section_ptr != NULL); | |
2430 | ||
2431 | if (! elf_hash_table (info)->dynamic_sections_created | |
2432 | || (info->shared | |
2433 | && info->symbolic | |
2434 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
2435 | { | |
2436 | /* This is actually a static link, or it is a | |
2437 | -Bsymbolic link and the symbol is defined | |
2438 | locally. We must initialize this entry in the | |
2439 | global section. | |
2440 | ||
2441 | When doing a dynamic link, we create a .rela.<xxx> | |
2442 | relocation entry to initialize the value. This | |
2443 | is done in the finish_dynamic_symbol routine. */ | |
2444 | if (!linker_section_ptr->written_address_p) | |
2445 | { | |
2446 | linker_section_ptr->written_address_p = TRUE; | |
2447 | bfd_put_ptr (output_bfd, | |
2448 | relocation + linker_section_ptr->addend, | |
2449 | (lsect->section->contents | |
2450 | + linker_section_ptr->offset)); | |
2451 | } | |
2452 | } | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | /* Handle local symbol. */ | |
2457 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2458 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); | |
2459 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL); | |
2460 | linker_section_ptr = (elf_find_pointer_linker_section | |
2461 | (elf_local_ptr_offsets (input_bfd)[r_symndx], | |
2462 | rel->r_addend, | |
2463 | lsect->which)); | |
2464 | ||
2465 | BFD_ASSERT (linker_section_ptr != NULL); | |
2466 | ||
2467 | /* Write out pointer if it hasn't been rewritten out before. */ | |
2468 | if (!linker_section_ptr->written_address_p) | |
2469 | { | |
2470 | linker_section_ptr->written_address_p = TRUE; | |
2471 | bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend, | |
2472 | lsect->section->contents + linker_section_ptr->offset); | |
2473 | ||
2474 | if (info->shared) | |
2475 | { | |
2476 | asection *srel = lsect->rel_section; | |
2477 | Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL]; | |
2478 | bfd_byte *erel; | |
2479 | struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
2480 | unsigned int i; | |
2481 | ||
2482 | /* We need to generate a relative reloc for the dynamic | |
2483 | linker. */ | |
2484 | if (!srel) | |
2485 | { | |
2486 | srel = bfd_get_section_by_name (elf_hash_table (info)->dynobj, | |
2487 | lsect->rel_name); | |
2488 | lsect->rel_section = srel; | |
2489 | } | |
2490 | ||
2491 | BFD_ASSERT (srel != NULL); | |
2492 | ||
2493 | for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) | |
2494 | { | |
2495 | outrel[i].r_offset = (lsect->section->output_section->vma | |
2496 | + lsect->section->output_offset | |
2497 | + linker_section_ptr->offset); | |
2498 | outrel[i].r_info = 0; | |
2499 | outrel[i].r_addend = 0; | |
2500 | } | |
2501 | outrel[0].r_info = ELF32_R_INFO (0, relative_reloc); | |
2502 | erel = lsect->section->contents; | |
2503 | erel += (elf_section_data (lsect->section)->rel_count++ | |
2504 | * sizeof (Elf32_External_Rela)); | |
2505 | bfd_elf32_swap_reloca_out (output_bfd, outrel, erel); | |
2506 | } | |
2507 | } | |
2508 | } | |
2509 | ||
2510 | relocation = (lsect->section->output_offset | |
2511 | + linker_section_ptr->offset | |
2512 | - lsect->hole_offset | |
2513 | - lsect->sym_offset); | |
2514 | ||
2515 | #ifdef DEBUG | |
2516 | fprintf (stderr, | |
2517 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
2518 | lsect->name, (long) relocation, (long) relocation); | |
2519 | #endif | |
2520 | ||
2521 | /* Subtract out the addend, because it will get added back in by the normal | |
2522 | processing. */ | |
2523 | return relocation - linker_section_ptr->addend; | |
2524 | } | |
2525 | \f | |
252b5132 RH |
2526 | /* Create a special linker section */ |
2527 | static elf_linker_section_t * | |
55fd94b0 AM |
2528 | ppc_elf_create_linker_section (bfd *abfd, |
2529 | struct bfd_link_info *info, | |
2530 | enum elf_linker_section_enum which) | |
252b5132 RH |
2531 | { |
2532 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
2533 | elf_linker_section_t *lsect; | |
2534 | ||
ae9a127f | 2535 | /* Record the first bfd section that needs the special section. */ |
252b5132 RH |
2536 | if (!dynobj) |
2537 | dynobj = elf_hash_table (info)->dynobj = abfd; | |
2538 | ||
ae9a127f | 2539 | /* If this is the first time, create the section. */ |
252b5132 RH |
2540 | lsect = elf_linker_section (dynobj, which); |
2541 | if (!lsect) | |
2542 | { | |
2543 | elf_linker_section_t defaults; | |
2544 | static elf_linker_section_t zero_section; | |
2545 | ||
2546 | defaults = zero_section; | |
2547 | defaults.which = which; | |
b34976b6 | 2548 | defaults.hole_written_p = FALSE; |
252b5132 RH |
2549 | defaults.alignment = 2; |
2550 | ||
2551 | /* Both of these sections are (technically) created by the user | |
2552 | putting data in them, so they shouldn't be marked | |
2553 | SEC_LINKER_CREATED. | |
2554 | ||
2555 | The linker creates them so it has somewhere to attach their | |
2556 | respective symbols. In fact, if they were empty it would | |
2557 | be OK to leave the symbol set to 0 (or any random number), because | |
2558 | the appropriate register should never be used. */ | |
2559 | defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2560 | | SEC_IN_MEMORY); | |
2561 | ||
2562 | switch (which) | |
2563 | { | |
2564 | default: | |
7b609f53 | 2565 | (*_bfd_error_handler) (_("%s: unknown special linker type %d"), |
252b5132 | 2566 | bfd_get_filename (abfd), |
8da6118f | 2567 | (int) which); |
252b5132 RH |
2568 | |
2569 | bfd_set_error (bfd_error_bad_value); | |
55fd94b0 | 2570 | return NULL; |
252b5132 RH |
2571 | |
2572 | case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ | |
2573 | defaults.name = ".sdata"; | |
2574 | defaults.rel_name = ".rela.sdata"; | |
2575 | defaults.bss_name = ".sbss"; | |
2576 | defaults.sym_name = "_SDA_BASE_"; | |
2577 | defaults.sym_offset = 32768; | |
2578 | break; | |
2579 | ||
2580 | case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ | |
2581 | defaults.name = ".sdata2"; | |
2582 | defaults.rel_name = ".rela.sdata2"; | |
2583 | defaults.bss_name = ".sbss2"; | |
2584 | defaults.sym_name = "_SDA2_BASE_"; | |
2585 | defaults.sym_offset = 32768; | |
2586 | defaults.flags |= SEC_READONLY; | |
2587 | break; | |
2588 | } | |
2589 | ||
3dab13f6 | 2590 | lsect = elf_create_linker_section (abfd, info, which, &defaults); |
252b5132 RH |
2591 | } |
2592 | ||
2593 | return lsect; | |
2594 | } | |
252b5132 | 2595 | \f |
8da6118f KH |
2596 | /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we |
2597 | need to bump up the number of section headers. */ | |
252b5132 RH |
2598 | |
2599 | static int | |
55fd94b0 | 2600 | ppc_elf_additional_program_headers (bfd *abfd) |
252b5132 RH |
2601 | { |
2602 | asection *s; | |
2603 | int ret; | |
2604 | ||
2605 | ret = 0; | |
2606 | ||
2607 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2608 | if (s != NULL) | |
2609 | ++ret; | |
2610 | ||
2611 | s = bfd_get_section_by_name (abfd, ".sbss2"); | |
2612 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
2613 | ++ret; | |
2614 | ||
2615 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); | |
2616 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
2617 | ++ret; | |
2618 | ||
2619 | return ret; | |
2620 | } | |
2621 | ||
8da6118f | 2622 | /* Modify the segment map if needed. */ |
252b5132 | 2623 | |
b34976b6 | 2624 | static bfd_boolean |
55fd94b0 | 2625 | ppc_elf_modify_segment_map (bfd *abfd ATTRIBUTE_UNUSED) |
252b5132 | 2626 | { |
b34976b6 | 2627 | return TRUE; |
252b5132 RH |
2628 | } |
2629 | \f | |
41fcb14e AM |
2630 | /* The powerpc .got has a blrl instruction in it. Mark it executable. */ |
2631 | ||
7619e7c7 | 2632 | static bfd_boolean |
55fd94b0 | 2633 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) |
41fcb14e | 2634 | { |
7619e7c7 AM |
2635 | struct ppc_elf_link_hash_table *htab; |
2636 | asection *s; | |
41fcb14e AM |
2637 | flagword flags; |
2638 | ||
2639 | if (!_bfd_elf_create_got_section (abfd, info)) | |
7619e7c7 | 2640 | return FALSE; |
41fcb14e | 2641 | |
7619e7c7 AM |
2642 | htab = ppc_elf_hash_table (info); |
2643 | htab->got = s = bfd_get_section_by_name (abfd, ".got"); | |
41fcb14e AM |
2644 | if (s == NULL) |
2645 | abort (); | |
2646 | ||
2647 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2648 | | SEC_LINKER_CREATED); | |
2649 | if (!bfd_set_section_flags (abfd, s, flags)) | |
7619e7c7 AM |
2650 | return FALSE; |
2651 | ||
2652 | htab->relgot = bfd_make_section (abfd, ".rela.got"); | |
2653 | if (!htab->relgot | |
2654 | || ! bfd_set_section_flags (abfd, htab->relgot, | |
2655 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2656 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2657 | | SEC_READONLY)) | |
2658 | || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) | |
2659 | return FALSE; | |
2660 | ||
2661 | return TRUE; | |
41fcb14e AM |
2662 | } |
2663 | ||
252b5132 RH |
2664 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2665 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2666 | to create .dynbss and .rela.bss). */ | |
2667 | ||
b34976b6 | 2668 | static bfd_boolean |
55fd94b0 | 2669 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2670 | { |
7619e7c7 AM |
2671 | struct ppc_elf_link_hash_table *htab; |
2672 | asection *s; | |
252b5132 RH |
2673 | flagword flags; |
2674 | ||
3dab13f6 AM |
2675 | htab = ppc_elf_hash_table (info); |
2676 | ||
2677 | if (htab->got == NULL | |
2678 | && !ppc_elf_create_got (abfd, info)) | |
b34976b6 | 2679 | return FALSE; |
41fcb14e | 2680 | |
8da6118f | 2681 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
b34976b6 | 2682 | return FALSE; |
252b5132 RH |
2683 | |
2684 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2685 | | SEC_LINKER_CREATED); | |
2686 | ||
7619e7c7 AM |
2687 | htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
2688 | htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss"); | |
252b5132 RH |
2689 | if (s == NULL |
2690 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
b34976b6 | 2691 | return FALSE; |
252b5132 RH |
2692 | |
2693 | if (! info->shared) | |
2694 | { | |
7619e7c7 AM |
2695 | htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); |
2696 | htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss"); | |
252b5132 RH |
2697 | if (s == NULL |
2698 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
2699 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
b34976b6 | 2700 | return FALSE; |
252b5132 | 2701 | } |
41fcb14e | 2702 | |
7619e7c7 AM |
2703 | htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2704 | htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); | |
41fcb14e AM |
2705 | if (s == NULL) |
2706 | abort (); | |
2707 | ||
2708 | flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED; | |
2709 | return bfd_set_section_flags (abfd, s, flags); | |
252b5132 RH |
2710 | } |
2711 | ||
2712 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2713 | regular object. The current definition is in some section of the | |
2714 | dynamic object, but we're not including those sections. We have to | |
2715 | change the definition to something the rest of the link can | |
2716 | understand. */ | |
2717 | ||
b34976b6 | 2718 | static bfd_boolean |
55fd94b0 AM |
2719 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
2720 | struct elf_link_hash_entry *h) | |
252b5132 | 2721 | { |
7619e7c7 | 2722 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
2723 | asection *s; |
2724 | unsigned int power_of_two; | |
252b5132 RH |
2725 | |
2726 | #ifdef DEBUG | |
70bccea4 AM |
2727 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", |
2728 | h->root.root.string); | |
252b5132 RH |
2729 | #endif |
2730 | ||
2731 | /* Make sure we know what is going on here. */ | |
7619e7c7 AM |
2732 | htab = ppc_elf_hash_table (info); |
2733 | BFD_ASSERT (htab->elf.dynobj != NULL | |
252b5132 RH |
2734 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
2735 | || h->weakdef != NULL | |
2736 | || ((h->elf_link_hash_flags | |
2737 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2738 | && (h->elf_link_hash_flags | |
2739 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
2740 | && (h->elf_link_hash_flags | |
2741 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
2742 | ||
7619e7c7 | 2743 | /* Deal with function syms. */ |
252b5132 RH |
2744 | if (h->type == STT_FUNC |
2745 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2746 | { | |
7619e7c7 AM |
2747 | /* Clear procedure linkage table information for any symbol that |
2748 | won't need a .plt entry. */ | |
9c7a29a3 | 2749 | if (h->plt.refcount <= 0 |
fc0bffd6 | 2750 | || SYMBOL_CALLS_LOCAL (info, h) |
9c7a29a3 AM |
2751 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2752 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2753 | { |
2754 | /* A PLT entry is not required/allowed when: | |
2755 | ||
9c7a29a3 AM |
2756 | 1. We are not using ld.so; because then the PLT entry |
2757 | can't be set up, so we can't use one. In this case, | |
2758 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 2759 | |
9c7a29a3 | 2760 | 2. GC has rendered the entry unused. |
252b5132 | 2761 | |
9c7a29a3 AM |
2762 | 3. We know for certain that a call to this symbol |
2763 | will go to this object, or will remain undefined. */ | |
252b5132 RH |
2764 | h->plt.offset = (bfd_vma) -1; |
2765 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
252b5132 | 2766 | } |
b34976b6 | 2767 | return TRUE; |
252b5132 | 2768 | } |
bbd7ec4a AM |
2769 | else |
2770 | h->plt.offset = (bfd_vma) -1; | |
252b5132 RH |
2771 | |
2772 | /* If this is a weak symbol, and there is a real definition, the | |
2773 | processor independent code will have arranged for us to see the | |
2774 | real definition first, and we can just use the same value. */ | |
2775 | if (h->weakdef != NULL) | |
2776 | { | |
2777 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
2778 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
2779 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
2780 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
2781 | if (ELIMINATE_COPY_RELOCS) |
2782 | h->elf_link_hash_flags | |
2783 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
2784 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 2785 | return TRUE; |
252b5132 RH |
2786 | } |
2787 | ||
2788 | /* This is a reference to a symbol defined by a dynamic object which | |
2789 | is not a function. */ | |
2790 | ||
2791 | /* If we are creating a shared library, we must presume that the | |
2792 | only references to the symbol are via the global offset table. | |
2793 | For such cases we need not do anything here; the relocations will | |
2794 | be handled correctly by relocate_section. */ | |
2795 | if (info->shared) | |
b34976b6 | 2796 | return TRUE; |
252b5132 | 2797 | |
7619e7c7 AM |
2798 | /* If there are no references to this symbol that do not use the |
2799 | GOT, we don't need to generate a copy reloc. */ | |
2800 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
2801 | return TRUE; | |
2802 | ||
ee05f2fe AM |
2803 | if (ELIMINATE_COPY_RELOCS) |
2804 | { | |
2805 | struct ppc_elf_dyn_relocs *p; | |
2806 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
2807 | { | |
2808 | s = p->sec->output_section; | |
2809 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2810 | break; | |
2811 | } | |
2812 | ||
2813 | /* If we didn't find any dynamic relocs in read-only sections, then | |
2814 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
2815 | if (p == NULL) | |
2816 | { | |
2817 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
2818 | return TRUE; | |
2819 | } | |
2820 | } | |
2821 | ||
252b5132 RH |
2822 | /* We must allocate the symbol in our .dynbss section, which will |
2823 | become part of the .bss section of the executable. There will be | |
2824 | an entry for this symbol in the .dynsym section. The dynamic | |
2825 | object will contain position independent code, so all references | |
2826 | from the dynamic object to this symbol will go through the global | |
2827 | offset table. The dynamic linker will use the .dynsym entry to | |
2828 | determine the address it must put in the global offset table, so | |
2829 | both the dynamic object and the regular object will refer to the | |
2830 | same memory location for the variable. | |
2831 | ||
2832 | Of course, if the symbol is sufficiently small, we must instead | |
2833 | allocate it in .sbss. FIXME: It would be better to do this if and | |
2834 | only if there were actually SDAREL relocs for that symbol. */ | |
2835 | ||
7619e7c7 AM |
2836 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
2837 | s = htab->dynsbss; | |
252b5132 | 2838 | else |
7619e7c7 | 2839 | s = htab->dynbss; |
252b5132 RH |
2840 | BFD_ASSERT (s != NULL); |
2841 | ||
2842 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
2843 | copy the initial value out of the dynamic object and into the | |
2844 | runtime process image. We need to remember the offset into the | |
2845 | .rela.bss section we are going to use. */ | |
2846 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2847 | { | |
2848 | asection *srel; | |
2849 | ||
7619e7c7 AM |
2850 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
2851 | srel = htab->relsbss; | |
252b5132 | 2852 | else |
7619e7c7 | 2853 | srel = htab->relbss; |
252b5132 RH |
2854 | BFD_ASSERT (srel != NULL); |
2855 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
2856 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
2857 | } | |
2858 | ||
2859 | /* We need to figure out the alignment required for this symbol. I | |
2860 | have no idea how ELF linkers handle this. */ | |
2861 | power_of_two = bfd_log2 (h->size); | |
2862 | if (power_of_two > 4) | |
2863 | power_of_two = 4; | |
2864 | ||
2865 | /* Apply the required alignment. */ | |
2866 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
2867 | (bfd_size_type) (1 << power_of_two)); | |
7619e7c7 | 2868 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
252b5132 | 2869 | { |
7619e7c7 | 2870 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 2871 | return FALSE; |
252b5132 RH |
2872 | } |
2873 | ||
2874 | /* Define the symbol as being at this point in the section. */ | |
2875 | h->root.u.def.section = s; | |
2876 | h->root.u.def.value = s->_raw_size; | |
2877 | ||
2878 | /* Increment the section size to make room for the symbol. */ | |
2879 | s->_raw_size += h->size; | |
2880 | ||
b34976b6 | 2881 | return TRUE; |
252b5132 | 2882 | } |
252b5132 | 2883 | \f |
7619e7c7 AM |
2884 | /* This is the condition under which finish_dynamic_symbol will be |
2885 | called from elflink.h. If elflink.h doesn't call our | |
2886 | finish_dynamic_symbol routine, we'll need to do something about | |
2887 | initializing any .plt and .got entries in relocate_section. */ | |
ee05f2fe | 2888 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
7619e7c7 | 2889 | ((DYN) \ |
ee05f2fe | 2890 | && ((SHARED) \ |
7619e7c7 AM |
2891 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
2892 | && ((H)->dynindx != -1 \ | |
2893 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
2894 | ||
ee05f2fe AM |
2895 | /* Of those relocs that might be copied as dynamic relocs, this macro |
2896 | selects those that must be copied when linking a shared library, | |
2897 | even when the symbol is local. */ | |
2898 | ||
2899 | #define MUST_BE_DYN_RELOC(RTYPE) \ | |
2900 | ((RTYPE) != R_PPC_REL24 \ | |
2901 | && (RTYPE) != R_PPC_REL14 \ | |
2902 | && (RTYPE) != R_PPC_REL14_BRTAKEN \ | |
2903 | && (RTYPE) != R_PPC_REL14_BRNTAKEN \ | |
2904 | && (RTYPE) != R_PPC_REL32) | |
2905 | ||
7fce784e AS |
2906 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
2907 | ||
7619e7c7 | 2908 | static bfd_boolean |
55fd94b0 | 2909 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
7619e7c7 | 2910 | { |
55fd94b0 | 2911 | struct bfd_link_info *info = inf; |
7619e7c7 AM |
2912 | struct ppc_elf_link_hash_entry *eh; |
2913 | struct ppc_elf_link_hash_table *htab; | |
2914 | struct ppc_elf_dyn_relocs *p; | |
2915 | ||
2916 | if (h->root.type == bfd_link_hash_indirect) | |
2917 | return TRUE; | |
2918 | ||
2919 | if (h->root.type == bfd_link_hash_warning) | |
2920 | /* When warning symbols are created, they **replace** the "real" | |
2921 | entry in the hash table, thus we never get to see the real | |
2922 | symbol in a hash traversal. So look at it now. */ | |
2923 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2924 | ||
2925 | htab = ppc_elf_hash_table (info); | |
2926 | if (htab->elf.dynamic_sections_created | |
9c7a29a3 | 2927 | && h->plt.refcount > 0) |
7619e7c7 AM |
2928 | { |
2929 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2930 | if (h->dynindx == -1 | |
2931 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
2932 | { | |
2933 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2934 | return FALSE; | |
2935 | } | |
2936 | ||
ee05f2fe AM |
2937 | if (info->shared |
2938 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
7619e7c7 AM |
2939 | { |
2940 | asection *s = htab->plt; | |
2941 | ||
2942 | /* If this is the first .plt entry, make room for the special | |
2943 | first entry. */ | |
2944 | if (s->_raw_size == 0) | |
2945 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; | |
2946 | ||
2947 | /* The PowerPC PLT is actually composed of two parts, the | |
2948 | first part is 2 words (for a load and a jump), and then | |
2949 | there is a remaining word available at the end. */ | |
2950 | h->plt.offset = (PLT_INITIAL_ENTRY_SIZE | |
2951 | + (PLT_SLOT_SIZE | |
2952 | * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) | |
2953 | / PLT_ENTRY_SIZE))); | |
2954 | ||
2955 | /* If this symbol is not defined in a regular file, and we | |
2956 | are not generating a shared library, then set the symbol | |
2957 | to this location in the .plt. This is required to make | |
2958 | function pointers compare as equal between the normal | |
2959 | executable and the shared library. */ | |
2960 | if (! info->shared | |
2961 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2962 | { | |
2963 | h->root.u.def.section = s; | |
2964 | h->root.u.def.value = h->plt.offset; | |
2965 | } | |
2966 | ||
2967 | /* Make room for this entry. After the 8192nd entry, room | |
2968 | for two entries is allocated. */ | |
2969 | s->_raw_size += PLT_ENTRY_SIZE; | |
2970 | if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
f2c822e3 | 2971 | > PLT_NUM_SINGLE_ENTRIES) |
7619e7c7 AM |
2972 | s->_raw_size += PLT_ENTRY_SIZE; |
2973 | ||
2974 | /* We also need to make an entry in the .rela.plt section. */ | |
2975 | htab->relplt->_raw_size += sizeof (Elf32_External_Rela); | |
2976 | } | |
2977 | else | |
2978 | { | |
2979 | h->plt.offset = (bfd_vma) -1; | |
2980 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2981 | } | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | h->plt.offset = (bfd_vma) -1; | |
2986 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2987 | } | |
7fce784e | 2988 | |
7619e7c7 AM |
2989 | eh = (struct ppc_elf_link_hash_entry *) h; |
2990 | if (eh->elf.got.refcount > 0) | |
2991 | { | |
2992 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2993 | if (eh->elf.dynindx == -1 | |
2994 | && (eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
2995 | { | |
2996 | if (!bfd_elf32_link_record_dynamic_symbol (info, &eh->elf)) | |
2997 | return FALSE; | |
2998 | } | |
7fce784e | 2999 | |
7619e7c7 AM |
3000 | if (eh->tls_mask == (TLS_TLS | TLS_LD) |
3001 | && !(eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
3002 | /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ | |
3003 | eh->elf.got.offset = (bfd_vma) -1; | |
3004 | else | |
3005 | { | |
3006 | bfd_boolean dyn; | |
3007 | eh->elf.got.offset = htab->got->_raw_size; | |
3008 | if ((eh->tls_mask & TLS_TLS) != 0) | |
3009 | { | |
70bccea4 AM |
3010 | if ((eh->tls_mask & TLS_LD) != 0) |
3011 | htab->got->_raw_size += 8; | |
3012 | if ((eh->tls_mask & TLS_GD) != 0) | |
7619e7c7 AM |
3013 | htab->got->_raw_size += 8; |
3014 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
3015 | htab->got->_raw_size += 4; | |
3016 | if ((eh->tls_mask & TLS_DTPREL) != 0) | |
3017 | htab->got->_raw_size += 4; | |
3018 | } | |
3019 | else | |
3020 | htab->got->_raw_size += 4; | |
3021 | dyn = htab->elf.dynamic_sections_created; | |
4e795f50 AM |
3022 | if ((info->shared |
3023 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
3024 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
3025 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
7619e7c7 AM |
3026 | { |
3027 | /* All the entries we allocated need relocs. */ | |
3028 | htab->relgot->_raw_size | |
3029 | += ((htab->got->_raw_size - eh->elf.got.offset) / 4 | |
3030 | * sizeof (Elf32_External_Rela)); | |
3031 | /* Except LD only needs one. */ | |
3032 | if ((eh->tls_mask & TLS_LD) != 0) | |
3033 | htab->relgot->_raw_size -= sizeof (Elf32_External_Rela); | |
3034 | } | |
3035 | } | |
3036 | } | |
3037 | else | |
3038 | eh->elf.got.offset = (bfd_vma) -1; | |
7fce784e | 3039 | |
ee05f2fe AM |
3040 | if (eh->dyn_relocs == NULL) |
3041 | return TRUE; | |
3042 | ||
3043 | /* In the shared -Bsymbolic case, discard space allocated for | |
3044 | dynamic pc-relative relocs against symbols which turn out to be | |
3045 | defined in regular objects. For the normal shared case, discard | |
3046 | space for relocs that have become local due to symbol visibility | |
3047 | changes. */ | |
586119b3 | 3048 | |
ee05f2fe AM |
3049 | if (info->shared) |
3050 | { | |
9c7a29a3 AM |
3051 | /* Relocs that use pc_count are those that appear on a call insn, |
3052 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
3053 | generated via assembly. We want calls to protected symbols to | |
3054 | resolve directly to the function rather than going via the plt. | |
3055 | If people want function pointer comparisons to work as expected | |
55fd94b0 | 3056 | then they should avoid writing weird assembly. */ |
09695f56 | 3057 | if (SYMBOL_CALLS_LOCAL (info, h)) |
ee05f2fe AM |
3058 | { |
3059 | struct ppc_elf_dyn_relocs **pp; | |
3060 | ||
3061 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
3062 | { | |
3063 | p->count -= p->pc_count; | |
3064 | p->pc_count = 0; | |
3065 | if (p->count == 0) | |
3066 | *pp = p->next; | |
3067 | else | |
3068 | pp = &p->next; | |
3069 | } | |
3070 | } | |
4e795f50 AM |
3071 | |
3072 | /* Also discard relocs on undefined weak syms with non-default | |
3073 | visibility. */ | |
3074 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3075 | && h->root.type == bfd_link_hash_undefweak) | |
3076 | eh->dyn_relocs = NULL; | |
ee05f2fe AM |
3077 | } |
3078 | else if (ELIMINATE_COPY_RELOCS) | |
3079 | { | |
3080 | /* For the non-shared case, discard space for relocs against | |
3081 | symbols which turn out to need copy relocs or are not | |
3082 | dynamic. */ | |
3083 | ||
3084 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
3085 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3086 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3087 | { | |
3088 | /* Make sure this symbol is output as a dynamic symbol. | |
3089 | Undefined weak syms won't yet be marked as dynamic. */ | |
3090 | if (h->dynindx == -1 | |
3091 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
3092 | { | |
3093 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
3094 | return FALSE; | |
3095 | } | |
3096 | ||
3097 | /* If that succeeded, we know we'll be keeping all the | |
3098 | relocs. */ | |
3099 | if (h->dynindx != -1) | |
3100 | goto keep; | |
3101 | } | |
3102 | ||
3103 | eh->dyn_relocs = NULL; | |
3104 | ||
3105 | keep: ; | |
3106 | } | |
3107 | ||
3108 | /* Finally, allocate space. */ | |
7619e7c7 | 3109 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
7fce784e AS |
3110 | { |
3111 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3112 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); | |
3113 | } | |
3114 | ||
3115 | return TRUE; | |
3116 | } | |
3117 | ||
3118 | /* Find any dynamic relocs that apply to read-only sections. */ | |
3119 | ||
3120 | static bfd_boolean | |
55fd94b0 | 3121 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) |
7fce784e AS |
3122 | { |
3123 | struct ppc_elf_dyn_relocs *p; | |
3124 | ||
3125 | if (h->root.type == bfd_link_hash_indirect) | |
3126 | return TRUE; | |
3127 | ||
3128 | if (h->root.type == bfd_link_hash_warning) | |
3129 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3130 | ||
3131 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
3132 | { | |
3133 | asection *s = p->sec->output_section; | |
3134 | ||
3135 | if (s != NULL | |
3136 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
3137 | == (SEC_READONLY | SEC_ALLOC))) | |
3138 | { | |
3139 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
3140 | ||
3141 | /* Not an error, just cut short the traversal. */ | |
3142 | return FALSE; | |
3143 | } | |
3144 | } | |
3145 | return TRUE; | |
3146 | } | |
3147 | ||
252b5132 RH |
3148 | /* Set the sizes of the dynamic sections. */ |
3149 | ||
b34976b6 | 3150 | static bfd_boolean |
55fd94b0 AM |
3151 | ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3152 | struct bfd_link_info *info) | |
252b5132 | 3153 | { |
7619e7c7 | 3154 | struct ppc_elf_link_hash_table *htab; |
252b5132 | 3155 | asection *s; |
b34976b6 | 3156 | bfd_boolean relocs; |
7fce784e | 3157 | bfd *ibfd; |
252b5132 RH |
3158 | |
3159 | #ifdef DEBUG | |
3160 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); | |
3161 | #endif | |
3162 | ||
7619e7c7 AM |
3163 | htab = ppc_elf_hash_table (info); |
3164 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 RH |
3165 | |
3166 | if (elf_hash_table (info)->dynamic_sections_created) | |
3167 | { | |
3168 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 3169 | if (info->executable) |
252b5132 | 3170 | { |
7619e7c7 | 3171 | s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); |
252b5132 RH |
3172 | BFD_ASSERT (s != NULL); |
3173 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3174 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3175 | } | |
3176 | } | |
7619e7c7 AM |
3177 | |
3178 | if (htab->tlsld_got.refcount > 0) | |
252b5132 | 3179 | { |
7619e7c7 AM |
3180 | htab->tlsld_got.offset = htab->got->_raw_size; |
3181 | htab->got->_raw_size += 8; | |
3182 | if (info->shared) | |
3183 | htab->relgot->_raw_size += sizeof (Elf32_External_Rela); | |
252b5132 | 3184 | } |
7619e7c7 AM |
3185 | else |
3186 | htab->tlsld_got.offset = (bfd_vma) -1; | |
252b5132 | 3187 | |
7619e7c7 AM |
3188 | /* Set up .got offsets for local syms, and space for local dynamic |
3189 | relocs. */ | |
7fce784e AS |
3190 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
3191 | { | |
7619e7c7 AM |
3192 | bfd_signed_vma *local_got; |
3193 | bfd_signed_vma *end_local_got; | |
3194 | char *lgot_masks; | |
3195 | bfd_size_type locsymcount; | |
3196 | Elf_Internal_Shdr *symtab_hdr; | |
3197 | asection *srel; | |
3198 | ||
7fce784e AS |
3199 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
3200 | continue; | |
3201 | ||
3202 | for (s = ibfd->sections; s != NULL; s = s->next) | |
3203 | { | |
3204 | struct ppc_elf_dyn_relocs *p; | |
3205 | ||
3206 | for (p = ((struct ppc_elf_dyn_relocs *) | |
70bccea4 AM |
3207 | elf_section_data (s)->local_dynrel); |
3208 | p != NULL; | |
3209 | p = p->next) | |
7fce784e AS |
3210 | { |
3211 | if (!bfd_is_abs_section (p->sec) | |
3212 | && bfd_is_abs_section (p->sec->output_section)) | |
3213 | { | |
3214 | /* Input section has been discarded, either because | |
3215 | it is a copy of a linkonce section or due to | |
3216 | linker script /DISCARD/, so we'll be discarding | |
3217 | the relocs too. */ | |
3218 | } | |
3219 | else if (p->count != 0) | |
3220 | { | |
3221 | elf_section_data (p->sec)->sreloc->_raw_size | |
3222 | += p->count * sizeof (Elf32_External_Rela); | |
3223 | if ((p->sec->output_section->flags | |
3224 | & (SEC_READONLY | SEC_ALLOC)) | |
3225 | == (SEC_READONLY | SEC_ALLOC)) | |
3226 | info->flags |= DF_TEXTREL; | |
3227 | } | |
3228 | } | |
3229 | } | |
7619e7c7 AM |
3230 | |
3231 | local_got = elf_local_got_refcounts (ibfd); | |
3232 | if (!local_got) | |
3233 | continue; | |
3234 | ||
3235 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3236 | locsymcount = symtab_hdr->sh_info; | |
3237 | end_local_got = local_got + locsymcount; | |
3238 | lgot_masks = (char *) end_local_got; | |
3239 | s = htab->got; | |
3240 | srel = htab->relgot; | |
3241 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) | |
3242 | if (*local_got > 0) | |
3243 | { | |
3244 | if (*lgot_masks == (TLS_TLS | TLS_LD)) | |
3245 | { | |
3246 | /* If just an LD reloc, we'll just use | |
3247 | htab->tlsld_got.offset. */ | |
3248 | if (htab->tlsld_got.offset == (bfd_vma) -1) | |
3249 | { | |
3250 | htab->tlsld_got.offset = s->_raw_size; | |
3251 | s->_raw_size += 8; | |
3252 | if (info->shared) | |
3253 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
3254 | } | |
3255 | *local_got = (bfd_vma) -1; | |
3256 | } | |
3257 | else | |
3258 | { | |
3259 | *local_got = s->_raw_size; | |
3260 | if ((*lgot_masks & TLS_TLS) != 0) | |
3261 | { | |
3262 | if ((*lgot_masks & TLS_GD) != 0) | |
3263 | s->_raw_size += 8; | |
3264 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
3265 | s->_raw_size += 4; | |
3266 | if ((*lgot_masks & TLS_DTPREL) != 0) | |
3267 | s->_raw_size += 4; | |
3268 | } | |
3269 | else | |
3270 | s->_raw_size += 4; | |
3271 | if (info->shared) | |
3272 | srel->_raw_size += ((s->_raw_size - *local_got) / 4 | |
3273 | * sizeof (Elf32_External_Rela)); | |
3274 | } | |
3275 | } | |
3276 | else | |
3277 | *local_got = (bfd_vma) -1; | |
7fce784e AS |
3278 | } |
3279 | ||
3280 | /* Allocate space for global sym dynamic relocs. */ | |
7619e7c7 | 3281 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); |
7fce784e | 3282 | |
7619e7c7 AM |
3283 | /* We've now determined the sizes of the various dynamic sections. |
3284 | Allocate memory for them. */ | |
b34976b6 | 3285 | relocs = FALSE; |
7619e7c7 | 3286 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) |
252b5132 | 3287 | { |
252b5132 RH |
3288 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
3289 | continue; | |
3290 | ||
7619e7c7 AM |
3291 | if (s == htab->plt |
3292 | || s == htab->got | |
3293 | || (htab->sdata != NULL && s == htab->sdata->section) | |
3294 | || (htab->sdata2 != NULL && s == htab->sdata2->section)) | |
252b5132 | 3295 | { |
7619e7c7 AM |
3296 | /* Strip this section if we don't need it; see the |
3297 | comment below. */ | |
252b5132 | 3298 | } |
7619e7c7 | 3299 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
252b5132 RH |
3300 | { |
3301 | if (s->_raw_size == 0) | |
3302 | { | |
3303 | /* If we don't need this section, strip it from the | |
3304 | output file. This is mostly to handle .rela.bss and | |
3305 | .rela.plt. We must create both sections in | |
3306 | create_dynamic_sections, because they must be created | |
3307 | before the linker maps input sections to output | |
3308 | sections. The linker does that before | |
3309 | adjust_dynamic_symbol is called, and it is that | |
3310 | function which decides whether anything needs to go | |
3311 | into these sections. */ | |
252b5132 RH |
3312 | } |
3313 | else | |
3314 | { | |
c3668558 | 3315 | /* Remember whether there are any relocation sections. */ |
b34976b6 | 3316 | relocs = TRUE; |
252b5132 | 3317 | |
252b5132 RH |
3318 | /* We use the reloc_count field as a counter if we need |
3319 | to copy relocs into the output file. */ | |
3320 | s->reloc_count = 0; | |
3321 | } | |
3322 | } | |
7619e7c7 | 3323 | else |
252b5132 RH |
3324 | { |
3325 | /* It's not one of our sections, so don't allocate space. */ | |
3326 | continue; | |
3327 | } | |
3328 | ||
7619e7c7 | 3329 | if (s->_raw_size == 0) |
252b5132 | 3330 | { |
7f8d5fc9 | 3331 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
3332 | continue; |
3333 | } | |
3334 | ||
3335 | /* Allocate memory for the section contents. */ | |
55fd94b0 | 3336 | s->contents = bfd_zalloc (htab->elf.dynobj, s->_raw_size); |
7619e7c7 | 3337 | if (s->contents == NULL) |
b34976b6 | 3338 | return FALSE; |
252b5132 RH |
3339 | } |
3340 | ||
7619e7c7 | 3341 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
3342 | { |
3343 | /* Add some entries to the .dynamic section. We fill in the | |
3344 | values later, in ppc_elf_finish_dynamic_sections, but we | |
3345 | must add the entries now so that we get the correct size for | |
3346 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3347 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3348 | #define add_dynamic_entry(TAG, VAL) \ |
55fd94b0 | 3349 | bfd_elf32_add_dynamic_entry (info, (TAG), (VAL)) |
dc810e39 | 3350 | |
36af4a4e | 3351 | if (info->executable) |
252b5132 | 3352 | { |
dc810e39 | 3353 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3354 | return FALSE; |
252b5132 RH |
3355 | } |
3356 | ||
7619e7c7 | 3357 | if (htab->plt != NULL && htab->plt->_raw_size != 0) |
252b5132 | 3358 | { |
dc810e39 AM |
3359 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3360 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3361 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3362 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3363 | return FALSE; |
252b5132 RH |
3364 | } |
3365 | ||
3366 | if (relocs) | |
3367 | { | |
dc810e39 AM |
3368 | if (!add_dynamic_entry (DT_RELA, 0) |
3369 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3370 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3371 | return FALSE; |
252b5132 RH |
3372 | } |
3373 | ||
7fce784e AS |
3374 | /* If any dynamic relocs apply to a read-only section, then we |
3375 | need a DT_TEXTREL entry. */ | |
3376 | if ((info->flags & DF_TEXTREL) == 0) | |
3377 | elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, | |
55fd94b0 | 3378 | info); |
7fce784e | 3379 | |
29c2fb7c | 3380 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 3381 | { |
dc810e39 | 3382 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3383 | return FALSE; |
252b5132 RH |
3384 | } |
3385 | } | |
dc810e39 | 3386 | #undef add_dynamic_entry |
252b5132 | 3387 | |
b34976b6 | 3388 | return TRUE; |
252b5132 | 3389 | } |
252b5132 | 3390 | \f |
7619e7c7 | 3391 | static bfd_boolean |
55fd94b0 AM |
3392 | update_local_sym_info (bfd *abfd, |
3393 | Elf_Internal_Shdr *symtab_hdr, | |
3394 | unsigned long r_symndx, | |
3395 | int tls_type) | |
7619e7c7 AM |
3396 | { |
3397 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); | |
3398 | char *local_got_tls_masks; | |
3399 | ||
3400 | if (local_got_refcounts == NULL) | |
3401 | { | |
3402 | bfd_size_type size = symtab_hdr->sh_info; | |
3403 | ||
3404 | size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); | |
55fd94b0 | 3405 | local_got_refcounts = bfd_zalloc (abfd, size); |
7619e7c7 AM |
3406 | if (local_got_refcounts == NULL) |
3407 | return FALSE; | |
3408 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
3409 | } | |
3410 | ||
3411 | local_got_refcounts[r_symndx] += 1; | |
3412 | local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
3413 | local_got_tls_masks[r_symndx] |= tls_type; | |
3414 | return TRUE; | |
3415 | } | |
3416 | ||
3417 | static void | |
55fd94b0 | 3418 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) |
7619e7c7 AM |
3419 | { |
3420 | (*_bfd_error_handler) | |
3421 | (_("%s: relocation %s cannot be used when making a shared object"), | |
3422 | bfd_archive_filename (abfd), | |
55fd94b0 | 3423 | ppc_elf_howto_table[r_type]->name); |
7619e7c7 AM |
3424 | bfd_set_error (bfd_error_bad_value); |
3425 | } | |
3426 | ||
252b5132 RH |
3427 | /* Look through the relocs for a section during the first phase, and |
3428 | allocate space in the global offset table or procedure linkage | |
3429 | table. */ | |
3430 | ||
b34976b6 | 3431 | static bfd_boolean |
55fd94b0 AM |
3432 | ppc_elf_check_relocs (bfd *abfd, |
3433 | struct bfd_link_info *info, | |
3434 | asection *sec, | |
3435 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3436 | { |
7619e7c7 | 3437 | struct ppc_elf_link_hash_table *htab; |
252b5132 | 3438 | Elf_Internal_Shdr *symtab_hdr; |
7619e7c7 | 3439 | struct elf_link_hash_entry **sym_hashes; |
252b5132 RH |
3440 | const Elf_Internal_Rela *rel; |
3441 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 3442 | asection *sreloc; |
252b5132 | 3443 | |
1049f94e | 3444 | if (info->relocatable) |
b34976b6 | 3445 | return TRUE; |
252b5132 RH |
3446 | |
3447 | #ifdef DEBUG | |
3448 | fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", | |
3449 | bfd_get_section_name (abfd, sec), | |
8f615d07 | 3450 | bfd_archive_filename (abfd)); |
252b5132 RH |
3451 | #endif |
3452 | ||
e47cd125 AM |
3453 | /* Initialize howto table if not already done. */ |
3454 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3455 | ppc_elf_howto_init (); | |
3456 | ||
252b5132 RH |
3457 | /* Create the linker generated sections all the time so that the |
3458 | special symbols are created. */ | |
7619e7c7 AM |
3459 | htab = ppc_elf_hash_table (info); |
3460 | if (htab->sdata == NULL) | |
252b5132 | 3461 | { |
7619e7c7 AM |
3462 | htab->sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA); |
3463 | if (htab->sdata == NULL) | |
3464 | htab->sdata = ppc_elf_create_linker_section (abfd, info, | |
3465 | LINKER_SECTION_SDATA); | |
3466 | if (htab->sdata == NULL) | |
b34976b6 | 3467 | return FALSE; |
252b5132 RH |
3468 | } |
3469 | ||
7619e7c7 | 3470 | if (htab->sdata2 == NULL) |
252b5132 | 3471 | { |
7619e7c7 AM |
3472 | htab->sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2); |
3473 | if (htab->sdata2 == NULL) | |
3474 | htab->sdata2 = ppc_elf_create_linker_section (abfd, info, | |
3475 | LINKER_SECTION_SDATA2); | |
3476 | if (htab->sdata2 == NULL) | |
b34976b6 | 3477 | return FALSE; |
252b5132 RH |
3478 | } |
3479 | ||
252b5132 | 3480 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
252b5132 | 3481 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 RH |
3482 | sreloc = NULL; |
3483 | ||
3484 | rel_end = relocs + sec->reloc_count; | |
3485 | for (rel = relocs; rel < rel_end; rel++) | |
3486 | { | |
3487 | unsigned long r_symndx; | |
7619e7c7 | 3488 | enum elf_ppc_reloc_type r_type; |
252b5132 | 3489 | struct elf_link_hash_entry *h; |
7619e7c7 | 3490 | int tls_type = 0; |
252b5132 RH |
3491 | |
3492 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3493 | if (r_symndx < symtab_hdr->sh_info) | |
3494 | h = NULL; | |
3495 | else | |
3496 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3497 | ||
3498 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3499 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3500 | startup code. */ | |
3501 | if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3502 | { | |
7619e7c7 | 3503 | if (htab->got == NULL) |
252b5132 | 3504 | { |
7619e7c7 AM |
3505 | if (htab->elf.dynobj == NULL) |
3506 | htab->elf.dynobj = abfd; | |
3507 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
b34976b6 | 3508 | return FALSE; |
252b5132 RH |
3509 | } |
3510 | } | |
3511 | ||
55fd94b0 | 3512 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 | 3513 | switch (r_type) |
252b5132 | 3514 | { |
7619e7c7 AM |
3515 | case R_PPC_GOT_TLSLD16: |
3516 | case R_PPC_GOT_TLSLD16_LO: | |
3517 | case R_PPC_GOT_TLSLD16_HI: | |
3518 | case R_PPC_GOT_TLSLD16_HA: | |
3519 | htab->tlsld_got.refcount += 1; | |
3520 | tls_type = TLS_TLS | TLS_LD; | |
3521 | goto dogottls; | |
3522 | ||
3523 | case R_PPC_GOT_TLSGD16: | |
3524 | case R_PPC_GOT_TLSGD16_LO: | |
3525 | case R_PPC_GOT_TLSGD16_HI: | |
3526 | case R_PPC_GOT_TLSGD16_HA: | |
3527 | tls_type = TLS_TLS | TLS_GD; | |
3528 | goto dogottls; | |
3529 | ||
3530 | case R_PPC_GOT_TPREL16: | |
3531 | case R_PPC_GOT_TPREL16_LO: | |
3532 | case R_PPC_GOT_TPREL16_HI: | |
3533 | case R_PPC_GOT_TPREL16_HA: | |
3534 | if (info->shared) | |
3535 | info->flags |= DF_STATIC_TLS; | |
3536 | tls_type = TLS_TLS | TLS_TPREL; | |
3537 | goto dogottls; | |
3538 | ||
3539 | case R_PPC_GOT_DTPREL16: | |
3540 | case R_PPC_GOT_DTPREL16_LO: | |
3541 | case R_PPC_GOT_DTPREL16_HI: | |
3542 | case R_PPC_GOT_DTPREL16_HA: | |
3543 | tls_type = TLS_TLS | TLS_DTPREL; | |
3544 | dogottls: | |
3545 | sec->has_tls_reloc = 1; | |
3546 | /* Fall thru */ | |
3547 | ||
70bccea4 | 3548 | /* GOT16 relocations */ |
252b5132 RH |
3549 | case R_PPC_GOT16: |
3550 | case R_PPC_GOT16_LO: | |
3551 | case R_PPC_GOT16_HI: | |
3552 | case R_PPC_GOT16_HA: | |
3553 | /* This symbol requires a global offset table entry. */ | |
7619e7c7 | 3554 | if (htab->got == NULL) |
252b5132 | 3555 | { |
7619e7c7 AM |
3556 | if (htab->elf.dynobj == NULL) |
3557 | htab->elf.dynobj = abfd; | |
3558 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
b34976b6 | 3559 | return FALSE; |
252b5132 | 3560 | } |
252b5132 RH |
3561 | if (h != NULL) |
3562 | { | |
7619e7c7 AM |
3563 | h->got.refcount += 1; |
3564 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
252b5132 RH |
3565 | } |
3566 | else | |
7619e7c7 AM |
3567 | /* This is a global offset table entry for a local symbol. */ |
3568 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3569 | return FALSE; | |
252b5132 RH |
3570 | break; |
3571 | ||
70bccea4 | 3572 | /* Indirect .sdata relocation. */ |
252b5132 RH |
3573 | case R_PPC_EMB_SDAI16: |
3574 | if (info->shared) | |
3575 | { | |
7619e7c7 | 3576 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3577 | return FALSE; |
252b5132 | 3578 | } |
3dab13f6 AM |
3579 | if (!elf_create_pointer_linker_section (abfd, info, |
3580 | htab->sdata, h, rel)) | |
b34976b6 | 3581 | return FALSE; |
252b5132 RH |
3582 | break; |
3583 | ||
70bccea4 | 3584 | /* Indirect .sdata2 relocation. */ |
252b5132 RH |
3585 | case R_PPC_EMB_SDA2I16: |
3586 | if (info->shared) | |
3587 | { | |
7619e7c7 | 3588 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3589 | return FALSE; |
252b5132 | 3590 | } |
3dab13f6 AM |
3591 | if (!elf_create_pointer_linker_section (abfd, info, |
3592 | htab->sdata2, h, rel)) | |
b34976b6 | 3593 | return FALSE; |
252b5132 RH |
3594 | break; |
3595 | ||
3596 | case R_PPC_SDAREL16: | |
3597 | case R_PPC_EMB_SDA2REL: | |
3598 | case R_PPC_EMB_SDA21: | |
7619e7c7 AM |
3599 | case R_PPC_EMB_RELSDA: |
3600 | case R_PPC_EMB_NADDR32: | |
3601 | case R_PPC_EMB_NADDR16: | |
3602 | case R_PPC_EMB_NADDR16_LO: | |
3603 | case R_PPC_EMB_NADDR16_HI: | |
3604 | case R_PPC_EMB_NADDR16_HA: | |
252b5132 RH |
3605 | if (info->shared) |
3606 | { | |
7619e7c7 | 3607 | bad_shared_reloc (abfd, r_type); |
b34976b6 | 3608 | return FALSE; |
252b5132 RH |
3609 | } |
3610 | break; | |
3611 | ||
3612 | case R_PPC_PLT32: | |
3613 | case R_PPC_PLTREL24: | |
7619e7c7 | 3614 | case R_PPC_PLTREL32: |
252b5132 RH |
3615 | case R_PPC_PLT16_LO: |
3616 | case R_PPC_PLT16_HI: | |
3617 | case R_PPC_PLT16_HA: | |
3618 | #ifdef DEBUG | |
3619 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3620 | #endif | |
3621 | /* This symbol requires a procedure linkage table entry. We | |
70bccea4 AM |
3622 | actually build the entry in finish_dynamic_symbol, |
3623 | because this might be a case of linking PIC code without | |
3624 | linking in any dynamic objects, in which case we don't | |
3625 | need to generate a procedure linkage table after all. */ | |
252b5132 RH |
3626 | |
3627 | if (h == NULL) | |
3628 | { | |
3629 | /* It does not make sense to have a procedure linkage | |
70bccea4 | 3630 | table entry for a local symbol. */ |
d85f2c7d AM |
3631 | (*_bfd_error_handler) (_("%s(%s+0x%lx): %s reloc against " |
3632 | "local symbol"), | |
3633 | bfd_archive_filename (abfd), | |
3634 | sec->name, | |
3635 | (long) rel->r_offset, | |
3636 | ppc_elf_howto_table[r_type]->name); | |
252b5132 | 3637 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3638 | return FALSE; |
252b5132 RH |
3639 | } |
3640 | ||
51b64d56 AM |
3641 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
3642 | h->plt.refcount++; | |
252b5132 RH |
3643 | break; |
3644 | ||
3645 | /* The following relocations don't need to propagate the | |
3646 | relocation if linking a shared object since they are | |
3647 | section relative. */ | |
3648 | case R_PPC_SECTOFF: | |
3649 | case R_PPC_SECTOFF_LO: | |
3650 | case R_PPC_SECTOFF_HI: | |
3651 | case R_PPC_SECTOFF_HA: | |
7619e7c7 AM |
3652 | case R_PPC_DTPREL16: |
3653 | case R_PPC_DTPREL16_LO: | |
3654 | case R_PPC_DTPREL16_HI: | |
3655 | case R_PPC_DTPREL16_HA: | |
3656 | case R_PPC_TOC16: | |
3657 | break; | |
3658 | ||
3659 | /* This are just markers. */ | |
3660 | case R_PPC_TLS: | |
3661 | case R_PPC_EMB_MRKREF: | |
3662 | case R_PPC_NONE: | |
3663 | case R_PPC_max: | |
3664 | break; | |
3665 | ||
3666 | /* These should only appear in dynamic objects. */ | |
3667 | case R_PPC_COPY: | |
3668 | case R_PPC_GLOB_DAT: | |
3669 | case R_PPC_JMP_SLOT: | |
3670 | case R_PPC_RELATIVE: | |
3671 | break; | |
3672 | ||
3673 | /* These aren't handled yet. We'll report an error later. */ | |
3674 | case R_PPC_ADDR30: | |
3675 | case R_PPC_EMB_RELSEC16: | |
3676 | case R_PPC_EMB_RELST_LO: | |
3677 | case R_PPC_EMB_RELST_HI: | |
3678 | case R_PPC_EMB_RELST_HA: | |
3679 | case R_PPC_EMB_BIT_FLD: | |
252b5132 RH |
3680 | break; |
3681 | ||
ae9a127f | 3682 | /* This refers only to functions defined in the shared library. */ |
252b5132 RH |
3683 | case R_PPC_LOCAL24PC: |
3684 | break; | |
3685 | ||
3686 | /* This relocation describes the C++ object vtable hierarchy. | |
3687 | Reconstruct it for later use during GC. */ | |
3688 | case R_PPC_GNU_VTINHERIT: | |
3689 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 3690 | return FALSE; |
252b5132 RH |
3691 | break; |
3692 | ||
3693 | /* This relocation describes which C++ vtable entries are actually | |
3694 | used. Record for later use during GC. */ | |
3695 | case R_PPC_GNU_VTENTRY: | |
3696 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 3697 | return FALSE; |
252b5132 RH |
3698 | break; |
3699 | ||
7619e7c7 AM |
3700 | /* We shouldn't really be seeing these. */ |
3701 | case R_PPC_TPREL32: | |
3702 | if (info->shared) | |
3703 | info->flags |= DF_STATIC_TLS; | |
3704 | goto dodyn; | |
3705 | ||
3706 | /* Nor these. */ | |
3707 | case R_PPC_DTPMOD32: | |
3708 | case R_PPC_DTPREL32: | |
3709 | goto dodyn; | |
3710 | ||
3711 | case R_PPC_TPREL16: | |
3712 | case R_PPC_TPREL16_LO: | |
3713 | case R_PPC_TPREL16_HI: | |
3714 | case R_PPC_TPREL16_HA: | |
3715 | if (info->shared) | |
3716 | info->flags |= DF_STATIC_TLS; | |
3717 | goto dodyn; | |
3718 | ||
252b5132 RH |
3719 | /* When creating a shared object, we must copy these |
3720 | relocs into the output file. We create a reloc | |
3721 | section in dynobj and make room for the reloc. */ | |
3722 | case R_PPC_REL24: | |
3723 | case R_PPC_REL14: | |
3724 | case R_PPC_REL14_BRTAKEN: | |
3725 | case R_PPC_REL14_BRNTAKEN: | |
3726 | case R_PPC_REL32: | |
3727 | if (h == NULL | |
2b98e6c0 | 3728 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 RH |
3729 | break; |
3730 | /* fall through */ | |
3731 | ||
7619e7c7 AM |
3732 | case R_PPC_ADDR32: |
3733 | case R_PPC_ADDR24: | |
3734 | case R_PPC_ADDR16: | |
3735 | case R_PPC_ADDR16_LO: | |
3736 | case R_PPC_ADDR16_HI: | |
3737 | case R_PPC_ADDR16_HA: | |
3738 | case R_PPC_ADDR14: | |
3739 | case R_PPC_ADDR14_BRTAKEN: | |
3740 | case R_PPC_ADDR14_BRNTAKEN: | |
3741 | case R_PPC_UADDR32: | |
3742 | case R_PPC_UADDR16: | |
3743 | if (h != NULL && !info->shared) | |
3744 | { | |
3745 | /* We may need a plt entry if the symbol turns out to be | |
3746 | a function defined in a dynamic object. */ | |
3747 | h->plt.refcount++; | |
3748 | ||
3749 | /* We may need a copy reloc too. */ | |
3750 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
3751 | } | |
ee05f2fe | 3752 | |
7619e7c7 | 3753 | dodyn: |
ee05f2fe AM |
3754 | /* If we are creating a shared library, and this is a reloc |
3755 | against a global symbol, or a non PC relative reloc | |
3756 | against a local symbol, then we need to copy the reloc | |
3757 | into the shared library. However, if we are linking with | |
3758 | -Bsymbolic, we do not need to copy a reloc against a | |
3759 | global symbol which is defined in an object we are | |
3760 | including in the link (i.e., DEF_REGULAR is set). At | |
3761 | this point we have not seen all the input files, so it is | |
3762 | possible that DEF_REGULAR is not set now but will be set | |
3763 | later (it is never cleared). In case of a weak definition, | |
3764 | DEF_REGULAR may be cleared later by a strong definition in | |
3765 | a shared library. We account for that possibility below by | |
3766 | storing information in the dyn_relocs field of the hash | |
3767 | table entry. A similar situation occurs when creating | |
3768 | shared libraries and symbol visibility changes render the | |
3769 | symbol local. | |
3770 | ||
3771 | If on the other hand, we are creating an executable, we | |
3772 | may need to keep relocations for symbols satisfied by a | |
3773 | dynamic library if we manage to avoid copy relocs for the | |
3774 | symbol. */ | |
3775 | if ((info->shared | |
3776 | && (MUST_BE_DYN_RELOC (r_type) | |
3777 | || (h != NULL | |
3778 | && (! info->symbolic | |
3779 | || h->root.type == bfd_link_hash_defweak | |
3780 | || (h->elf_link_hash_flags | |
3781 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
3782 | || (ELIMINATE_COPY_RELOCS | |
3783 | && !info->shared | |
3784 | && (sec->flags & SEC_ALLOC) != 0 | |
3785 | && h != NULL | |
3786 | && (h->root.type == bfd_link_hash_defweak | |
3787 | || (h->elf_link_hash_flags | |
3788 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 3789 | { |
7fce784e AS |
3790 | struct ppc_elf_dyn_relocs *p; |
3791 | struct ppc_elf_dyn_relocs **head; | |
3792 | ||
252b5132 | 3793 | #ifdef DEBUG |
55fd94b0 AM |
3794 | fprintf (stderr, |
3795 | "ppc_elf_check_relocs needs to " | |
3796 | "create relocation for %s\n", | |
70bccea4 AM |
3797 | (h && h->root.root.string |
3798 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
3799 | #endif |
3800 | if (sreloc == NULL) | |
3801 | { | |
3802 | const char *name; | |
3803 | ||
3804 | name = (bfd_elf_string_from_elf_section | |
3805 | (abfd, | |
3806 | elf_elfheader (abfd)->e_shstrndx, | |
3807 | elf_section_data (sec)->rel_hdr.sh_name)); | |
3808 | if (name == NULL) | |
b34976b6 | 3809 | return FALSE; |
252b5132 RH |
3810 | |
3811 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
3812 | && strcmp (bfd_get_section_name (abfd, sec), | |
3813 | name + 5) == 0); | |
3814 | ||
7619e7c7 | 3815 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
3816 | if (sreloc == NULL) |
3817 | { | |
3818 | flagword flags; | |
3819 | ||
7619e7c7 | 3820 | sreloc = bfd_make_section (htab->elf.dynobj, name); |
252b5132 RH |
3821 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
3822 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3823 | if ((sec->flags & SEC_ALLOC) != 0) | |
3824 | flags |= SEC_ALLOC | SEC_LOAD; | |
3825 | if (sreloc == NULL | |
7619e7c7 AM |
3826 | || ! bfd_set_section_flags (htab->elf.dynobj, |
3827 | sreloc, flags) | |
3828 | || ! bfd_set_section_alignment (htab->elf.dynobj, | |
3829 | sreloc, 2)) | |
b34976b6 | 3830 | return FALSE; |
252b5132 | 3831 | } |
7fce784e AS |
3832 | elf_section_data (sec)->sreloc = sreloc; |
3833 | } | |
3834 | ||
3835 | /* If this is a global symbol, we count the number of | |
3836 | relocations we need for this symbol. */ | |
3837 | if (h != NULL) | |
3838 | { | |
3839 | head = &ppc_elf_hash_entry (h)->dyn_relocs; | |
252b5132 | 3840 | } |
7fce784e AS |
3841 | else |
3842 | { | |
3843 | /* Track dynamic relocs needed for local syms too. | |
3844 | We really need local syms available to do this | |
3845 | easily. Oh well. */ | |
3846 | ||
3847 | asection *s; | |
ee05f2fe AM |
3848 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
3849 | sec, r_symndx); | |
7fce784e AS |
3850 | if (s == NULL) |
3851 | return FALSE; | |
252b5132 | 3852 | |
7fce784e AS |
3853 | head = ((struct ppc_elf_dyn_relocs **) |
3854 | &elf_section_data (s)->local_dynrel); | |
3855 | } | |
252b5132 | 3856 | |
7fce784e AS |
3857 | p = *head; |
3858 | if (p == NULL || p->sec != sec) | |
3859 | { | |
55fd94b0 | 3860 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
7fce784e AS |
3861 | if (p == NULL) |
3862 | return FALSE; | |
3863 | p->next = *head; | |
3864 | *head = p; | |
3865 | p->sec = sec; | |
3866 | p->count = 0; | |
ee05f2fe | 3867 | p->pc_count = 0; |
7fce784e AS |
3868 | } |
3869 | ||
ee05f2fe AM |
3870 | p->count += 1; |
3871 | if (!MUST_BE_DYN_RELOC (r_type)) | |
3872 | p->pc_count += 1; | |
252b5132 RH |
3873 | } |
3874 | ||
3875 | break; | |
3876 | } | |
3877 | } | |
3878 | ||
b34976b6 | 3879 | return TRUE; |
252b5132 RH |
3880 | } |
3881 | ||
3882 | /* Return the section that should be marked against GC for a given | |
3883 | relocation. */ | |
3884 | ||
3885 | static asection * | |
55fd94b0 AM |
3886 | ppc_elf_gc_mark_hook (asection *sec, |
3887 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3888 | Elf_Internal_Rela *rel, | |
3889 | struct elf_link_hash_entry *h, | |
3890 | Elf_Internal_Sym *sym) | |
252b5132 RH |
3891 | { |
3892 | if (h != NULL) | |
3893 | { | |
3894 | switch (ELF32_R_TYPE (rel->r_info)) | |
3895 | { | |
3896 | case R_PPC_GNU_VTINHERIT: | |
3897 | case R_PPC_GNU_VTENTRY: | |
3898 | break; | |
3899 | ||
3900 | default: | |
3901 | switch (h->root.type) | |
3902 | { | |
3903 | case bfd_link_hash_defined: | |
3904 | case bfd_link_hash_defweak: | |
3905 | return h->root.u.def.section; | |
3906 | ||
3907 | case bfd_link_hash_common: | |
3908 | return h->root.u.c.p->section; | |
3909 | ||
3910 | default: | |
3911 | break; | |
3912 | } | |
3913 | } | |
3914 | } | |
3915 | else | |
1e2f5b6e | 3916 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
3917 | |
3918 | return NULL; | |
3919 | } | |
3920 | ||
7619e7c7 AM |
3921 | /* Update the got, plt and dynamic reloc reference counts for the |
3922 | section being removed. */ | |
252b5132 | 3923 | |
b34976b6 | 3924 | static bfd_boolean |
55fd94b0 AM |
3925 | ppc_elf_gc_sweep_hook (bfd *abfd, |
3926 | struct bfd_link_info *info, | |
3927 | asection *sec, | |
3928 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3929 | { |
7619e7c7 | 3930 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
3931 | Elf_Internal_Shdr *symtab_hdr; |
3932 | struct elf_link_hash_entry **sym_hashes; | |
3933 | bfd_signed_vma *local_got_refcounts; | |
3934 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 3935 | |
7fce784e AS |
3936 | elf_section_data (sec)->local_dynrel = NULL; |
3937 | ||
7619e7c7 | 3938 | htab = ppc_elf_hash_table (info); |
252b5132 RH |
3939 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3940 | sym_hashes = elf_sym_hashes (abfd); | |
3941 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
3942 | ||
3943 | relend = relocs + sec->reloc_count; | |
3944 | for (rel = relocs; rel < relend; rel++) | |
7619e7c7 AM |
3945 | { |
3946 | unsigned long r_symndx; | |
3947 | enum elf_ppc_reloc_type r_type; | |
3948 | struct elf_link_hash_entry *h = NULL; | |
252b5132 | 3949 | |
7619e7c7 AM |
3950 | r_symndx = ELF32_R_SYM (rel->r_info); |
3951 | if (r_symndx >= symtab_hdr->sh_info) | |
3952 | { | |
3953 | struct ppc_elf_dyn_relocs **pp, *p; | |
3954 | struct ppc_elf_link_hash_entry *eh; | |
3955 | ||
3956 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3957 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3958 | ||
3959 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3960 | if (p->sec == sec) | |
3961 | { | |
3962 | /* Everything must go for SEC. */ | |
3963 | *pp = p->next; | |
3964 | break; | |
3965 | } | |
3966 | } | |
3967 | ||
55fd94b0 | 3968 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 AM |
3969 | switch (r_type) |
3970 | { | |
3971 | case R_PPC_GOT_TLSLD16: | |
3972 | case R_PPC_GOT_TLSLD16_LO: | |
3973 | case R_PPC_GOT_TLSLD16_HI: | |
3974 | case R_PPC_GOT_TLSLD16_HA: | |
3975 | htab->tlsld_got.refcount -= 1; | |
3976 | /* Fall thru */ | |
3977 | ||
3978 | case R_PPC_GOT_TLSGD16: | |
3979 | case R_PPC_GOT_TLSGD16_LO: | |
3980 | case R_PPC_GOT_TLSGD16_HI: | |
3981 | case R_PPC_GOT_TLSGD16_HA: | |
3982 | case R_PPC_GOT_TPREL16: | |
3983 | case R_PPC_GOT_TPREL16_LO: | |
3984 | case R_PPC_GOT_TPREL16_HI: | |
3985 | case R_PPC_GOT_TPREL16_HA: | |
3986 | case R_PPC_GOT_DTPREL16: | |
3987 | case R_PPC_GOT_DTPREL16_LO: | |
3988 | case R_PPC_GOT_DTPREL16_HI: | |
3989 | case R_PPC_GOT_DTPREL16_HA: | |
3990 | case R_PPC_GOT16: | |
3991 | case R_PPC_GOT16_LO: | |
3992 | case R_PPC_GOT16_HI: | |
3993 | case R_PPC_GOT16_HA: | |
3994 | if (h != NULL) | |
3995 | { | |
3996 | if (h->got.refcount > 0) | |
3997 | h->got.refcount--; | |
3998 | } | |
3999 | else if (local_got_refcounts != NULL) | |
4000 | { | |
4001 | if (local_got_refcounts[r_symndx] > 0) | |
4002 | local_got_refcounts[r_symndx]--; | |
4003 | } | |
4004 | break; | |
4005 | ||
4006 | case R_PPC_REL24: | |
4007 | case R_PPC_REL14: | |
4008 | case R_PPC_REL14_BRTAKEN: | |
4009 | case R_PPC_REL14_BRNTAKEN: | |
4010 | case R_PPC_REL32: | |
4011 | if (h == NULL | |
2b98e6c0 | 4012 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
7619e7c7 AM |
4013 | break; |
4014 | /* Fall thru */ | |
4015 | ||
4016 | case R_PPC_ADDR32: | |
4017 | case R_PPC_ADDR24: | |
4018 | case R_PPC_ADDR16: | |
4019 | case R_PPC_ADDR16_LO: | |
4020 | case R_PPC_ADDR16_HI: | |
4021 | case R_PPC_ADDR16_HA: | |
4022 | case R_PPC_ADDR14: | |
4023 | case R_PPC_ADDR14_BRTAKEN: | |
4024 | case R_PPC_ADDR14_BRNTAKEN: | |
4025 | case R_PPC_UADDR32: | |
4026 | case R_PPC_UADDR16: | |
4027 | case R_PPC_PLT32: | |
4028 | case R_PPC_PLTREL24: | |
4029 | case R_PPC_PLT16_LO: | |
4030 | case R_PPC_PLT16_HI: | |
4031 | case R_PPC_PLT16_HA: | |
4032 | if (h != NULL) | |
4033 | { | |
4034 | if (h->plt.refcount > 0) | |
4035 | h->plt.refcount--; | |
4036 | } | |
4037 | break; | |
4038 | ||
4039 | default: | |
4040 | break; | |
4041 | } | |
4042 | } | |
4043 | return TRUE; | |
4044 | } | |
4045 | ||
4046 | /* Set htab->tls_sec and htab->tls_get_addr. */ | |
4047 | ||
4048 | bfd_boolean | |
55fd94b0 | 4049 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7619e7c7 AM |
4050 | { |
4051 | asection *tls; | |
4052 | struct ppc_elf_link_hash_table *htab; | |
4053 | ||
4054 | htab = ppc_elf_hash_table (info); | |
4055 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
4056 | FALSE, FALSE, TRUE); | |
4057 | ||
4058 | for (tls = obfd->sections; tls != NULL; tls = tls->next) | |
4059 | if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4060 | == (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4061 | break; | |
4062 | htab->tls_sec = tls; | |
4063 | ||
4064 | return tls != NULL; | |
4065 | } | |
4066 | ||
4067 | /* Run through all the TLS relocs looking for optimization | |
4068 | opportunities. */ | |
4069 | ||
4070 | bfd_boolean | |
55fd94b0 AM |
4071 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, |
4072 | struct bfd_link_info *info) | |
7619e7c7 AM |
4073 | { |
4074 | bfd *ibfd; | |
4075 | asection *sec; | |
4076 | struct ppc_elf_link_hash_table *htab; | |
4077 | ||
1049f94e | 4078 | if (info->relocatable || info->shared) |
7619e7c7 AM |
4079 | return TRUE; |
4080 | ||
4081 | htab = ppc_elf_hash_table (info); | |
4082 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4083 | { | |
4084 | Elf_Internal_Sym *locsyms = NULL; | |
4085 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4086 | ||
4087 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4088 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7fce784e | 4089 | { |
7619e7c7 AM |
4090 | Elf_Internal_Rela *relstart, *rel, *relend; |
4091 | int expecting_tls_get_addr; | |
4092 | ||
4093 | /* Read the relocations. */ | |
55fd94b0 | 4094 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 4095 | info->keep_memory); |
7619e7c7 AM |
4096 | if (relstart == NULL) |
4097 | return FALSE; | |
4098 | ||
4099 | expecting_tls_get_addr = 0; | |
4100 | relend = relstart + sec->reloc_count; | |
4101 | for (rel = relstart; rel < relend; rel++) | |
4102 | { | |
4103 | enum elf_ppc_reloc_type r_type; | |
4104 | unsigned long r_symndx; | |
4105 | struct elf_link_hash_entry *h = NULL; | |
4106 | char *tls_mask; | |
4107 | char tls_set, tls_clear; | |
4108 | bfd_boolean is_local; | |
4109 | ||
4110 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4111 | if (r_symndx >= symtab_hdr->sh_info) | |
4112 | { | |
4113 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4114 | |
7619e7c7 AM |
4115 | sym_hashes = elf_sym_hashes (ibfd); |
4116 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4117 | while (h->root.type == bfd_link_hash_indirect | |
4118 | || h->root.type == bfd_link_hash_warning) | |
4119 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4120 | } | |
7fce784e | 4121 | |
7619e7c7 AM |
4122 | is_local = FALSE; |
4123 | if (h == NULL | |
4124 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
4125 | is_local = TRUE; | |
4126 | ||
55fd94b0 | 4127 | r_type = ELF32_R_TYPE (rel->r_info); |
7619e7c7 AM |
4128 | switch (r_type) |
4129 | { | |
4130 | case R_PPC_GOT_TLSLD16: | |
4131 | case R_PPC_GOT_TLSLD16_LO: | |
4132 | case R_PPC_GOT_TLSLD16_HI: | |
4133 | case R_PPC_GOT_TLSLD16_HA: | |
4134 | /* These relocs should never be against a symbol | |
4135 | defined in a shared lib. Leave them alone if | |
4136 | that turns out to be the case. */ | |
4137 | expecting_tls_get_addr = 0; | |
4138 | htab->tlsld_got.refcount -= 1; | |
4139 | if (!is_local) | |
4140 | continue; | |
4141 | ||
4142 | /* LD -> LE */ | |
4143 | tls_set = 0; | |
4144 | tls_clear = TLS_LD; | |
4145 | expecting_tls_get_addr = 1; | |
4146 | break; | |
4147 | ||
4148 | case R_PPC_GOT_TLSGD16: | |
4149 | case R_PPC_GOT_TLSGD16_LO: | |
4150 | case R_PPC_GOT_TLSGD16_HI: | |
4151 | case R_PPC_GOT_TLSGD16_HA: | |
4152 | if (is_local) | |
4153 | /* GD -> LE */ | |
4154 | tls_set = 0; | |
4155 | else | |
4156 | /* GD -> IE */ | |
4157 | tls_set = TLS_TLS | TLS_TPRELGD; | |
4158 | tls_clear = TLS_GD; | |
4159 | expecting_tls_get_addr = 1; | |
4160 | break; | |
4161 | ||
4162 | case R_PPC_GOT_TPREL16: | |
4163 | case R_PPC_GOT_TPREL16_LO: | |
4164 | case R_PPC_GOT_TPREL16_HI: | |
4165 | case R_PPC_GOT_TPREL16_HA: | |
4166 | expecting_tls_get_addr = 0; | |
4167 | if (is_local) | |
4168 | { | |
4169 | /* IE -> LE */ | |
4170 | tls_set = 0; | |
4171 | tls_clear = TLS_TPREL; | |
4172 | break; | |
4173 | } | |
4174 | else | |
4175 | continue; | |
4176 | ||
4177 | case R_PPC_REL14: | |
4178 | case R_PPC_REL14_BRTAKEN: | |
4179 | case R_PPC_REL14_BRNTAKEN: | |
4180 | case R_PPC_REL24: | |
4181 | if (expecting_tls_get_addr | |
4182 | && h != NULL | |
4183 | && h == htab->tls_get_addr) | |
4184 | { | |
4185 | if (h->plt.refcount > 0) | |
4186 | h->plt.refcount -= 1; | |
4187 | } | |
4188 | expecting_tls_get_addr = 0; | |
4189 | continue; | |
4190 | ||
4191 | default: | |
4192 | expecting_tls_get_addr = 0; | |
4193 | continue; | |
4194 | } | |
4195 | ||
4196 | if (h != NULL) | |
4197 | { | |
4198 | if (tls_set == 0) | |
4199 | { | |
4200 | /* We managed to get rid of a got entry. */ | |
4201 | if (h->got.refcount > 0) | |
4202 | h->got.refcount -= 1; | |
4203 | } | |
4204 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4205 | } | |
4206 | else | |
4207 | { | |
4208 | Elf_Internal_Sym *sym; | |
4209 | bfd_signed_vma *lgot_refs; | |
4210 | char *lgot_masks; | |
4211 | ||
4212 | if (locsyms == NULL) | |
4213 | { | |
4214 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4215 | if (locsyms == NULL) | |
4216 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4217 | symtab_hdr->sh_info, | |
4218 | 0, NULL, NULL, NULL); | |
4219 | if (locsyms == NULL) | |
4220 | { | |
4221 | if (elf_section_data (sec)->relocs != relstart) | |
4222 | free (relstart); | |
4223 | return FALSE; | |
4224 | } | |
4225 | } | |
4226 | sym = locsyms + r_symndx; | |
4227 | lgot_refs = elf_local_got_refcounts (ibfd); | |
4228 | if (lgot_refs == NULL) | |
4229 | abort (); | |
4230 | if (tls_set == 0) | |
4231 | { | |
4232 | /* We managed to get rid of a got entry. */ | |
4233 | if (lgot_refs[r_symndx] > 0) | |
4234 | lgot_refs[r_symndx] -= 1; | |
4235 | } | |
4236 | lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); | |
4237 | tls_mask = &lgot_masks[r_symndx]; | |
4238 | } | |
4239 | ||
4240 | *tls_mask |= tls_set; | |
4241 | *tls_mask &= ~tls_clear; | |
4242 | } | |
4243 | ||
4244 | if (elf_section_data (sec)->relocs != relstart) | |
4245 | free (relstart); | |
7fce784e | 4246 | } |
252b5132 | 4247 | |
7619e7c7 AM |
4248 | if (locsyms != NULL |
4249 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
4250 | { | |
4251 | if (!info->keep_memory) | |
4252 | free (locsyms); | |
4253 | else | |
4254 | symtab_hdr->contents = (unsigned char *) locsyms; | |
4255 | } | |
4256 | } | |
b34976b6 | 4257 | return TRUE; |
252b5132 RH |
4258 | } |
4259 | \f | |
4260 | /* Hook called by the linker routine which adds symbols from an object | |
4261 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
4262 | ||
b34976b6 | 4263 | static bfd_boolean |
55fd94b0 AM |
4264 | ppc_elf_add_symbol_hook (bfd *abfd, |
4265 | struct bfd_link_info *info, | |
4266 | const Elf_Internal_Sym *sym, | |
4267 | const char **namep ATTRIBUTE_UNUSED, | |
4268 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4269 | asection **secp, | |
4270 | bfd_vma *valp) | |
252b5132 RH |
4271 | { |
4272 | if (sym->st_shndx == SHN_COMMON | |
1049f94e | 4273 | && !info->relocatable |
27242387 AM |
4274 | && sym->st_size <= elf_gp_size (abfd) |
4275 | && info->hash->creator->flavour == bfd_target_elf_flavour) | |
252b5132 RH |
4276 | { |
4277 | /* Common symbols less than or equal to -G nn bytes are automatically | |
4278 | put into .sdata. */ | |
4279 | elf_linker_section_t *sdata | |
4280 | = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); | |
4281 | ||
4282 | if (!sdata->bss_section) | |
4283 | { | |
dc810e39 AM |
4284 | bfd_size_type amt; |
4285 | ||
252b5132 | 4286 | /* We don't go through bfd_make_section, because we don't |
70bccea4 AM |
4287 | want to attach this common section to DYNOBJ. The linker |
4288 | will move the symbols to the appropriate output section | |
4289 | when it defines common symbols. */ | |
dc810e39 | 4290 | amt = sizeof (asection); |
55fd94b0 | 4291 | sdata->bss_section = bfd_zalloc (abfd, amt); |
252b5132 | 4292 | if (sdata->bss_section == NULL) |
b34976b6 | 4293 | return FALSE; |
252b5132 RH |
4294 | sdata->bss_section->name = sdata->bss_name; |
4295 | sdata->bss_section->flags = SEC_IS_COMMON; | |
4296 | sdata->bss_section->output_section = sdata->bss_section; | |
dc810e39 | 4297 | amt = sizeof (asymbol); |
55fd94b0 | 4298 | sdata->bss_section->symbol = bfd_zalloc (abfd, amt); |
dc810e39 | 4299 | amt = sizeof (asymbol *); |
55fd94b0 | 4300 | sdata->bss_section->symbol_ptr_ptr = bfd_zalloc (abfd, amt); |
252b5132 RH |
4301 | if (sdata->bss_section->symbol == NULL |
4302 | || sdata->bss_section->symbol_ptr_ptr == NULL) | |
b34976b6 | 4303 | return FALSE; |
252b5132 RH |
4304 | sdata->bss_section->symbol->name = sdata->bss_name; |
4305 | sdata->bss_section->symbol->flags = BSF_SECTION_SYM; | |
4306 | sdata->bss_section->symbol->section = sdata->bss_section; | |
4307 | *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol; | |
4308 | } | |
4309 | ||
4310 | *secp = sdata->bss_section; | |
4311 | *valp = sym->st_size; | |
4312 | } | |
4313 | ||
b34976b6 | 4314 | return TRUE; |
252b5132 | 4315 | } |
252b5132 RH |
4316 | \f |
4317 | /* Finish up dynamic symbol handling. We set the contents of various | |
4318 | dynamic sections here. */ | |
4319 | ||
b34976b6 | 4320 | static bfd_boolean |
55fd94b0 AM |
4321 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
4322 | struct bfd_link_info *info, | |
4323 | struct elf_link_hash_entry *h, | |
4324 | Elf_Internal_Sym *sym) | |
252b5132 | 4325 | { |
7619e7c7 | 4326 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
4327 | |
4328 | #ifdef DEBUG | |
4329 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
4330 | h->root.root.string); | |
4331 | #endif | |
4332 | ||
7619e7c7 AM |
4333 | htab = ppc_elf_hash_table (info); |
4334 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 RH |
4335 | |
4336 | if (h->plt.offset != (bfd_vma) -1) | |
4337 | { | |
252b5132 | 4338 | Elf_Internal_Rela rela; |
947216bf | 4339 | bfd_byte *loc; |
252b5132 RH |
4340 | bfd_vma reloc_index; |
4341 | ||
4342 | #ifdef DEBUG | |
4343 | fprintf (stderr, ", plt_offset = %d", h->plt.offset); | |
4344 | #endif | |
4345 | ||
4346 | /* This symbol has an entry in the procedure linkage table. Set | |
70bccea4 | 4347 | it up. */ |
252b5132 RH |
4348 | |
4349 | BFD_ASSERT (h->dynindx != -1); | |
7619e7c7 | 4350 | BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL); |
252b5132 RH |
4351 | |
4352 | /* We don't need to fill in the .plt. The ppc dynamic linker | |
4353 | will fill it in. */ | |
4354 | ||
4355 | /* Fill in the entry in the .rela.plt section. */ | |
7619e7c7 AM |
4356 | rela.r_offset = (htab->plt->output_section->vma |
4357 | + htab->plt->output_offset | |
252b5132 RH |
4358 | + h->plt.offset); |
4359 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
4360 | rela.r_addend = 0; | |
4361 | ||
4362 | reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE; | |
4363 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES) | |
4364 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; | |
7619e7c7 AM |
4365 | loc = (htab->relplt->contents |
4366 | + reloc_index * sizeof (Elf32_External_Rela)); | |
947216bf | 4367 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
252b5132 RH |
4368 | |
4369 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4370 | { | |
4371 | /* Mark the symbol as undefined, rather than as defined in | |
4372 | the .plt section. Leave the value alone. */ | |
4373 | sym->st_shndx = SHN_UNDEF; | |
a4b120e1 GK |
4374 | /* If the symbol is weak, we do need to clear the value. |
4375 | Otherwise, the PLT entry would provide a definition for | |
4376 | the symbol even if the symbol wasn't defined anywhere, | |
4377 | and so the symbol would never be NULL. */ | |
c3668558 | 4378 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) |
a4b120e1 GK |
4379 | == 0) |
4380 | sym->st_value = 0; | |
252b5132 RH |
4381 | } |
4382 | } | |
4383 | ||
252b5132 RH |
4384 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
4385 | { | |
4386 | asection *s; | |
4387 | Elf_Internal_Rela rela; | |
947216bf | 4388 | bfd_byte *loc; |
252b5132 RH |
4389 | |
4390 | /* This symbols needs a copy reloc. Set it up. */ | |
4391 | ||
4392 | #ifdef DEBUG | |
4393 | fprintf (stderr, ", copy"); | |
4394 | #endif | |
4395 | ||
4396 | BFD_ASSERT (h->dynindx != -1); | |
4397 | ||
7619e7c7 AM |
4398 | if (h->size <= elf_gp_size (htab->elf.dynobj)) |
4399 | s = htab->relsbss; | |
252b5132 | 4400 | else |
7619e7c7 | 4401 | s = htab->relbss; |
252b5132 RH |
4402 | BFD_ASSERT (s != NULL); |
4403 | ||
4404 | rela.r_offset = (h->root.u.def.value | |
4405 | + h->root.u.def.section->output_section->vma | |
4406 | + h->root.u.def.section->output_offset); | |
4407 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
4408 | rela.r_addend = 0; | |
947216bf AM |
4409 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4410 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4411 | } |
4412 | ||
4413 | #ifdef DEBUG | |
4414 | fprintf (stderr, "\n"); | |
4415 | #endif | |
4416 | ||
4417 | /* Mark some specially defined symbols as absolute. */ | |
4418 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4419 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4420 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4421 | sym->st_shndx = SHN_ABS; | |
4422 | ||
b34976b6 | 4423 | return TRUE; |
252b5132 | 4424 | } |
252b5132 RH |
4425 | \f |
4426 | /* Finish up the dynamic sections. */ | |
4427 | ||
b34976b6 | 4428 | static bfd_boolean |
55fd94b0 AM |
4429 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, |
4430 | struct bfd_link_info *info) | |
252b5132 RH |
4431 | { |
4432 | asection *sdyn; | |
7619e7c7 | 4433 | struct ppc_elf_link_hash_table *htab; |
252b5132 RH |
4434 | |
4435 | #ifdef DEBUG | |
4436 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
4437 | #endif | |
4438 | ||
7619e7c7 AM |
4439 | htab = ppc_elf_hash_table (info); |
4440 | sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic"); | |
252b5132 | 4441 | |
7619e7c7 | 4442 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4443 | { |
252b5132 RH |
4444 | Elf32_External_Dyn *dyncon, *dynconend; |
4445 | ||
7619e7c7 | 4446 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
252b5132 RH |
4447 | |
4448 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4449 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4450 | for (; dyncon < dynconend; dyncon++) | |
4451 | { | |
4452 | Elf_Internal_Dyn dyn; | |
7619e7c7 | 4453 | asection *s; |
252b5132 | 4454 | |
7619e7c7 | 4455 | bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn); |
252b5132 RH |
4456 | |
4457 | switch (dyn.d_tag) | |
4458 | { | |
7619e7c7 AM |
4459 | case DT_PLTGOT: |
4460 | s = htab->plt; | |
4461 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4462 | break; | |
252b5132 | 4463 | |
7619e7c7 AM |
4464 | case DT_PLTRELSZ: |
4465 | dyn.d_un.d_val = htab->relplt->_raw_size; | |
4466 | break; | |
252b5132 | 4467 | |
7619e7c7 AM |
4468 | case DT_JMPREL: |
4469 | s = htab->relplt; | |
4470 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4471 | break; | |
4472 | ||
4473 | default: | |
4474 | continue; | |
252b5132 | 4475 | } |
7619e7c7 AM |
4476 | |
4477 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4478 | } |
4479 | } | |
4480 | ||
4481 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can | |
4482 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
7619e7c7 | 4483 | if (htab->got) |
252b5132 | 4484 | { |
7619e7c7 | 4485 | unsigned char *contents = htab->got->contents; |
55fd94b0 | 4486 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); |
252b5132 RH |
4487 | |
4488 | if (sdyn == NULL) | |
55fd94b0 | 4489 | bfd_put_32 (output_bfd, 0, contents + 4); |
252b5132 RH |
4490 | else |
4491 | bfd_put_32 (output_bfd, | |
4492 | sdyn->output_section->vma + sdyn->output_offset, | |
7619e7c7 | 4493 | contents + 4); |
252b5132 | 4494 | |
7619e7c7 | 4495 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; |
252b5132 RH |
4496 | } |
4497 | ||
b34976b6 | 4498 | return TRUE; |
252b5132 | 4499 | } |
252b5132 RH |
4500 | \f |
4501 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
4502 | to handle the relocations for a section. | |
4503 | ||
4504 | The relocs are always passed as Rela structures; if the section | |
4505 | actually uses Rel structures, the r_addend field will always be | |
4506 | zero. | |
4507 | ||
4508 | This function is responsible for adjust the section contents as | |
4509 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 4510 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
4511 | necessary. |
4512 | ||
4513 | This function does not have to worry about setting the reloc | |
4514 | address or the reloc symbol index. | |
4515 | ||
4516 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4517 | ||
4518 | LOCAL_SECTIONS is an array giving the section in the input file | |
4519 | corresponding to the st_shndx field of each local symbol. | |
4520 | ||
4521 | The global hash table entry for the global symbols can be found | |
4522 | via elf_sym_hashes (input_bfd). | |
4523 | ||
1049f94e | 4524 | When generating relocatable output, this function must handle |
252b5132 RH |
4525 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
4526 | going to be the section symbol corresponding to the output | |
4527 | section, which means that the addend must be adjusted | |
4528 | accordingly. */ | |
4529 | ||
b34976b6 | 4530 | static bfd_boolean |
55fd94b0 AM |
4531 | ppc_elf_relocate_section (bfd *output_bfd, |
4532 | struct bfd_link_info *info, | |
4533 | bfd *input_bfd, | |
4534 | asection *input_section, | |
4535 | bfd_byte *contents, | |
4536 | Elf_Internal_Rela *relocs, | |
4537 | Elf_Internal_Sym *local_syms, | |
4538 | asection **local_sections) | |
252b5132 | 4539 | { |
7619e7c7 AM |
4540 | Elf_Internal_Shdr *symtab_hdr; |
4541 | struct elf_link_hash_entry **sym_hashes; | |
4542 | struct ppc_elf_link_hash_table *htab; | |
4543 | Elf_Internal_Rela *rel; | |
4544 | Elf_Internal_Rela *relend; | |
4545 | Elf_Internal_Rela outrel; | |
4546 | bfd_byte *loc; | |
b34976b6 | 4547 | asection *sreloc = NULL; |
252b5132 | 4548 | bfd_vma *local_got_offsets; |
b34976b6 | 4549 | bfd_boolean ret = TRUE; |
b34976b6 | 4550 | |
252b5132 | 4551 | #ifdef DEBUG |
55fd94b0 AM |
4552 | fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, " |
4553 | "%ld relocations%s\n", | |
8f615d07 | 4554 | bfd_archive_filename (input_bfd), |
252b5132 | 4555 | bfd_section_name(input_bfd, input_section), |
8da6118f | 4556 | (long) input_section->reloc_count, |
1049f94e | 4557 | (info->relocatable) ? " (relocatable)" : ""); |
252b5132 RH |
4558 | #endif |
4559 | ||
1049f94e | 4560 | if (info->relocatable) |
b34976b6 | 4561 | return TRUE; |
b491616a | 4562 | |
e47cd125 | 4563 | /* Initialize howto table if not already done. */ |
8da6118f | 4564 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
4565 | ppc_elf_howto_init (); |
4566 | ||
7619e7c7 | 4567 | htab = ppc_elf_hash_table (info); |
252b5132 | 4568 | local_got_offsets = elf_local_got_offsets (input_bfd); |
7619e7c7 AM |
4569 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4570 | sym_hashes = elf_sym_hashes (input_bfd); | |
4571 | rel = relocs; | |
4572 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
4573 | for (; rel < relend; rel++) |
4574 | { | |
7619e7c7 AM |
4575 | enum elf_ppc_reloc_type r_type; |
4576 | bfd_vma addend; | |
4577 | bfd_reloc_status_type r; | |
4578 | Elf_Internal_Sym *sym; | |
4579 | asection *sec; | |
4580 | struct elf_link_hash_entry *h; | |
4581 | const char *sym_name; | |
252b5132 RH |
4582 | reloc_howto_type *howto; |
4583 | unsigned long r_symndx; | |
4584 | bfd_vma relocation; | |
7619e7c7 | 4585 | bfd_vma branch_bit, insn, from; |
7619e7c7 AM |
4586 | bfd_boolean unresolved_reloc; |
4587 | bfd_boolean warned; | |
4588 | unsigned int tls_type, tls_mask, tls_gd; | |
4589 | ||
55fd94b0 AM |
4590 | r_type = ELF32_R_TYPE (rel->r_info); |
4591 | sym = NULL; | |
4592 | sec = NULL; | |
4593 | h = NULL; | |
7619e7c7 AM |
4594 | unresolved_reloc = FALSE; |
4595 | warned = FALSE; | |
252b5132 | 4596 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 RH |
4597 | if (r_symndx < symtab_hdr->sh_info) |
4598 | { | |
4599 | sym = local_syms + r_symndx; | |
4600 | sec = local_sections[r_symndx]; | |
7619e7c7 | 4601 | sym_name = bfd_elf_local_sym_name (input_bfd, sym); |
252b5132 | 4602 | |
f8df10f4 | 4603 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
4604 | } |
4605 | else | |
4606 | { | |
4607 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4608 | while (h->root.type == bfd_link_hash_indirect | |
4609 | || h->root.type == bfd_link_hash_warning) | |
4610 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4611 | sym_name = h->root.root.string; | |
e1e0340b | 4612 | |
7619e7c7 | 4613 | relocation = 0; |
252b5132 RH |
4614 | if (h->root.type == bfd_link_hash_defined |
4615 | || h->root.type == bfd_link_hash_defweak) | |
4616 | { | |
4617 | sec = h->root.u.def.section; | |
70bccea4 AM |
4618 | /* Set a flag that will be cleared later if we find a |
4619 | relocation value for this symbol. output_section | |
4620 | is typically NULL for symbols satisfied by a shared | |
4621 | library. */ | |
7619e7c7 AM |
4622 | if (sec->output_section == NULL) |
4623 | unresolved_reloc = TRUE; | |
252b5132 RH |
4624 | else |
4625 | relocation = (h->root.u.def.value | |
4626 | + sec->output_section->vma | |
4627 | + sec->output_offset); | |
4628 | } | |
4629 | else if (h->root.type == bfd_link_hash_undefweak) | |
7619e7c7 | 4630 | ; |
671bae9c | 4631 | else if (info->shared |
671bae9c | 4632 | && !info->no_undefined |
3a27a730 | 4633 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
7619e7c7 | 4634 | ; |
252b5132 RH |
4635 | else |
4636 | { | |
7619e7c7 AM |
4637 | if (! ((*info->callbacks->undefined_symbol) |
4638 | (info, h->root.root.string, input_bfd, input_section, | |
4639 | rel->r_offset, (!info->shared | |
4640 | || info->no_undefined | |
4641 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 4642 | return FALSE; |
7619e7c7 AM |
4643 | warned = TRUE; |
4644 | } | |
4645 | } | |
4646 | ||
4647 | /* TLS optimizations. Replace instruction sequences and relocs | |
4648 | based on information we collected in tls_optimize. We edit | |
4649 | RELOCS so that --emit-relocs will output something sensible | |
4650 | for the final instruction stream. */ | |
4651 | tls_mask = 0; | |
4652 | tls_gd = 0; | |
4653 | if (IS_PPC_TLS_RELOC (r_type)) | |
4654 | { | |
4655 | if (h != NULL) | |
4656 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
4657 | else if (local_got_offsets != NULL) | |
4658 | { | |
4659 | char *lgot_masks; | |
4660 | lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); | |
4661 | tls_mask = lgot_masks[r_symndx]; | |
4662 | } | |
4663 | } | |
4664 | ||
4665 | /* Ensure reloc mapping code below stays sane. */ | |
4666 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
4667 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
4668 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
4669 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
4670 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
4671 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
4672 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
4673 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
4674 | abort (); | |
4675 | switch (r_type) | |
4676 | { | |
4677 | default: | |
4678 | break; | |
4679 | ||
4680 | case R_PPC_GOT_TPREL16: | |
4681 | case R_PPC_GOT_TPREL16_LO: | |
4682 | if (tls_mask != 0 | |
4683 | && (tls_mask & TLS_TPREL) == 0) | |
4684 | { | |
4685 | bfd_vma insn; | |
4686 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); | |
4687 | insn &= 31 << 21; | |
4688 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4689 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
4690 | r_type = R_PPC_TPREL16_HA; | |
4691 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4692 | } | |
4693 | break; | |
4694 | ||
4695 | case R_PPC_TLS: | |
4696 | if (tls_mask != 0 | |
4697 | && (tls_mask & TLS_TPREL) == 0) | |
4698 | { | |
4699 | bfd_vma insn, rtra; | |
4700 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4701 | if ((insn & ((31 << 26) | (31 << 11))) | |
4702 | == ((31 << 26) | (2 << 11))) | |
4703 | rtra = insn & ((1 << 26) - (1 << 16)); | |
4704 | else if ((insn & ((31 << 26) | (31 << 16))) | |
4705 | == ((31 << 26) | (2 << 16))) | |
4706 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
4707 | else | |
4708 | abort (); | |
4709 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
4710 | /* add -> addi. */ | |
4711 | insn = 14 << 26; | |
4712 | else if ((insn & (31 << 1)) == 23 << 1 | |
4713 | && ((insn & (31 << 6)) < 14 << 6 | |
4714 | || ((insn & (31 << 6)) >= 16 << 6 | |
4715 | && (insn & (31 << 6)) < 24 << 6))) | |
4716 | /* load and store indexed -> dform. */ | |
4717 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
4718 | else if ((insn & (31 << 1)) == 21 << 1 | |
4719 | && (insn & (0x1a << 6)) == 0) | |
4720 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
4721 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
4722 | | ((insn >> 6) & 1)); | |
4723 | else if ((insn & (31 << 1)) == 21 << 1 | |
4724 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
4725 | /* lwax -> lwa. */ | |
4726 | insn = (58 << 26) | 2; | |
4727 | else | |
4728 | abort (); | |
4729 | insn |= rtra; | |
4730 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
4731 | r_type = R_PPC_TPREL16_LO; | |
4732 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4733 | /* Was PPC_TLS which sits on insn boundary, now | |
4734 | PPC_TPREL16_LO which is at insn+2. */ | |
4735 | rel->r_offset += 2; | |
4736 | } | |
4737 | break; | |
4738 | ||
4739 | case R_PPC_GOT_TLSGD16_HI: | |
4740 | case R_PPC_GOT_TLSGD16_HA: | |
4741 | tls_gd = TLS_TPRELGD; | |
4742 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4743 | goto tls_gdld_hi; | |
4744 | break; | |
4745 | ||
4746 | case R_PPC_GOT_TLSLD16_HI: | |
4747 | case R_PPC_GOT_TLSLD16_HA: | |
4748 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4749 | { | |
4750 | tls_gdld_hi: | |
4751 | if ((tls_mask & tls_gd) != 0) | |
4752 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4753 | + R_PPC_GOT_TPREL16); | |
4754 | else | |
4755 | { | |
4756 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
4757 | rel->r_offset -= 2; | |
4758 | r_type = R_PPC_NONE; | |
4759 | } | |
4760 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4761 | } | |
4762 | break; | |
4763 | ||
4764 | case R_PPC_GOT_TLSGD16: | |
4765 | case R_PPC_GOT_TLSGD16_LO: | |
4766 | tls_gd = TLS_TPRELGD; | |
4767 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
4768 | goto tls_get_addr_check; | |
4769 | break; | |
4770 | ||
4771 | case R_PPC_GOT_TLSLD16: | |
4772 | case R_PPC_GOT_TLSLD16_LO: | |
4773 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
4774 | { | |
4775 | tls_get_addr_check: | |
4776 | if (rel + 1 < relend) | |
4777 | { | |
4778 | enum elf_ppc_reloc_type r_type2; | |
4779 | unsigned long r_symndx2; | |
4780 | struct elf_link_hash_entry *h2; | |
87d243f1 | 4781 | bfd_vma insn1, insn2; |
7619e7c7 AM |
4782 | bfd_vma offset; |
4783 | ||
4784 | /* The next instruction should be a call to | |
4785 | __tls_get_addr. Peek at the reloc to be sure. */ | |
55fd94b0 | 4786 | r_type2 = ELF32_R_TYPE (rel[1].r_info); |
7619e7c7 AM |
4787 | r_symndx2 = ELF32_R_SYM (rel[1].r_info); |
4788 | if (r_symndx2 < symtab_hdr->sh_info | |
4789 | || (r_type2 != R_PPC_REL14 | |
4790 | && r_type2 != R_PPC_REL14_BRTAKEN | |
4791 | && r_type2 != R_PPC_REL14_BRNTAKEN | |
4792 | && r_type2 != R_PPC_REL24 | |
4793 | && r_type2 != R_PPC_PLTREL24)) | |
4794 | break; | |
4795 | ||
4796 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
4797 | while (h2->root.type == bfd_link_hash_indirect | |
4798 | || h2->root.type == bfd_link_hash_warning) | |
4799 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
4800 | if (h2 == NULL || h2 != htab->tls_get_addr) | |
4801 | break; | |
4802 | ||
4803 | /* OK, it checks out. Replace the call. */ | |
4804 | offset = rel[1].r_offset; | |
4805 | insn1 = bfd_get_32 (output_bfd, | |
4806 | contents + rel->r_offset - 2); | |
7619e7c7 AM |
4807 | if ((tls_mask & tls_gd) != 0) |
4808 | { | |
4809 | /* IE */ | |
4810 | insn1 &= (1 << 26) - 1; | |
4811 | insn1 |= 32 << 26; /* lwz */ | |
4812 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
4813 | rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); | |
4814 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
4815 | + R_PPC_GOT_TPREL16); | |
4816 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4817 | } | |
4818 | else | |
4819 | { | |
4820 | /* LE */ | |
4821 | insn1 = 0x3c620000; /* addis 3,2,0 */ | |
4822 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
4823 | if (tls_gd == 0) | |
4824 | { | |
4825 | /* Was an LD reloc. */ | |
4826 | r_symndx = 0; | |
4827 | rel->r_addend = htab->tls_sec->vma + DTP_OFFSET; | |
4828 | rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET; | |
4829 | } | |
4830 | r_type = R_PPC_TPREL16_HA; | |
4831 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4832 | rel[1].r_info = ELF32_R_INFO (r_symndx, | |
4833 | R_PPC_TPREL16_LO); | |
4834 | rel[1].r_offset += 2; | |
4835 | } | |
7619e7c7 AM |
4836 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); |
4837 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7619e7c7 AM |
4838 | if (tls_gd == 0) |
4839 | { | |
4840 | /* We changed the symbol on an LD reloc. Start over | |
70bccea4 | 4841 | in order to get h, sym, sec etc. right. */ |
7619e7c7 AM |
4842 | rel--; |
4843 | continue; | |
4844 | } | |
4845 | } | |
252b5132 | 4846 | } |
7619e7c7 AM |
4847 | break; |
4848 | } | |
4849 | ||
4850 | /* Handle other relocations that tweak non-addend part of insn. */ | |
4851 | branch_bit = 0; | |
4852 | switch (r_type) | |
4853 | { | |
4854 | default: | |
4855 | break; | |
4856 | ||
4857 | /* Branch taken prediction relocations. */ | |
4858 | case R_PPC_ADDR14_BRTAKEN: | |
4859 | case R_PPC_REL14_BRTAKEN: | |
4860 | branch_bit = BRANCH_PREDICT_BIT; | |
4861 | /* Fall thru */ | |
4862 | ||
4863 | /* Branch not taken predicition relocations. */ | |
4864 | case R_PPC_ADDR14_BRNTAKEN: | |
4865 | case R_PPC_REL14_BRNTAKEN: | |
4866 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); | |
4867 | insn &= ~BRANCH_PREDICT_BIT; | |
4868 | insn |= branch_bit; | |
4869 | ||
4870 | from = (rel->r_offset | |
4871 | + input_section->output_offset | |
4872 | + input_section->output_section->vma); | |
4873 | ||
4874 | /* Invert 'y' bit if not the default. */ | |
4875 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
4876 | insn ^= BRANCH_PREDICT_BIT; | |
4877 | ||
4878 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
4879 | break; | |
252b5132 RH |
4880 | } |
4881 | ||
7619e7c7 AM |
4882 | addend = rel->r_addend; |
4883 | tls_type = 0; | |
4884 | howto = NULL; | |
55fd94b0 AM |
4885 | if (r_type < R_PPC_max) |
4886 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 4887 | switch (r_type) |
252b5132 RH |
4888 | { |
4889 | default: | |
7619e7c7 AM |
4890 | (*_bfd_error_handler) |
4891 | (_("%s: unknown relocation type %d for symbol %s"), | |
4892 | bfd_archive_filename (input_bfd), (int) r_type, sym_name); | |
252b5132 RH |
4893 | |
4894 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4895 | ret = FALSE; |
252b5132 RH |
4896 | continue; |
4897 | ||
7619e7c7 AM |
4898 | case R_PPC_NONE: |
4899 | case R_PPC_TLS: | |
4900 | case R_PPC_EMB_MRKREF: | |
4901 | case R_PPC_GNU_VTINHERIT: | |
4902 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
4903 | continue; |
4904 | ||
7619e7c7 AM |
4905 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
4906 | address in the GOT as relocation value instead of the | |
4907 | symbol's value itself. Also, create a GOT entry for the | |
4908 | symbol and put the symbol value there. */ | |
4909 | case R_PPC_GOT_TLSGD16: | |
4910 | case R_PPC_GOT_TLSGD16_LO: | |
4911 | case R_PPC_GOT_TLSGD16_HI: | |
4912 | case R_PPC_GOT_TLSGD16_HA: | |
4913 | tls_type = TLS_TLS | TLS_GD; | |
4914 | goto dogot; | |
4915 | ||
4916 | case R_PPC_GOT_TLSLD16: | |
4917 | case R_PPC_GOT_TLSLD16_LO: | |
4918 | case R_PPC_GOT_TLSLD16_HI: | |
4919 | case R_PPC_GOT_TLSLD16_HA: | |
4920 | tls_type = TLS_TLS | TLS_LD; | |
4921 | goto dogot; | |
4922 | ||
4923 | case R_PPC_GOT_TPREL16: | |
4924 | case R_PPC_GOT_TPREL16_LO: | |
4925 | case R_PPC_GOT_TPREL16_HI: | |
4926 | case R_PPC_GOT_TPREL16_HA: | |
4927 | tls_type = TLS_TLS | TLS_TPREL; | |
4928 | goto dogot; | |
4929 | ||
4930 | case R_PPC_GOT_DTPREL16: | |
4931 | case R_PPC_GOT_DTPREL16_LO: | |
4932 | case R_PPC_GOT_DTPREL16_HI: | |
4933 | case R_PPC_GOT_DTPREL16_HA: | |
4934 | tls_type = TLS_TLS | TLS_DTPREL; | |
4935 | goto dogot; | |
4936 | ||
4937 | case R_PPC_GOT16: | |
4938 | case R_PPC_GOT16_LO: | |
4939 | case R_PPC_GOT16_HI: | |
4940 | case R_PPC_GOT16_HA: | |
4941 | dogot: | |
4942 | { | |
4943 | /* Relocation is to the entry for this symbol in the global | |
4944 | offset table. */ | |
4945 | bfd_vma off; | |
4946 | bfd_vma *offp; | |
4947 | unsigned long indx; | |
4948 | ||
4949 | if (htab->got == NULL) | |
4950 | abort (); | |
4951 | ||
4952 | indx = 0; | |
4953 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 4954 | && (h == NULL |
7619e7c7 AM |
4955 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) |
4956 | offp = &htab->tlsld_got.offset; | |
4957 | else if (h != NULL) | |
4958 | { | |
4959 | bfd_boolean dyn; | |
4960 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 4961 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
4962 | || (info->shared |
4963 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
4964 | /* This is actually a static link, or it is a | |
4965 | -Bsymbolic link and the symbol is defined | |
4966 | locally, or the symbol was forced to be local | |
4967 | because of a version file. */ | |
4968 | ; | |
4969 | else | |
4970 | { | |
4971 | indx = h->dynindx; | |
4972 | unresolved_reloc = FALSE; | |
4973 | } | |
4974 | offp = &h->got.offset; | |
4975 | } | |
4976 | else | |
4977 | { | |
4978 | if (local_got_offsets == NULL) | |
4979 | abort (); | |
4980 | offp = &local_got_offsets[r_symndx]; | |
4981 | } | |
4982 | ||
4983 | /* The offset must always be a multiple of 4. We use the | |
4984 | least significant bit to record whether we have already | |
4985 | processed this entry. */ | |
4986 | off = *offp; | |
4987 | if ((off & 1) != 0) | |
4988 | off &= ~1; | |
4989 | else | |
4990 | { | |
70bccea4 AM |
4991 | unsigned int tls_m = (tls_mask |
4992 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
4993 | | TLS_TPREL | TLS_TPRELGD)); | |
4994 | ||
4995 | if (offp == &htab->tlsld_got.offset) | |
4996 | tls_m = TLS_LD; | |
4997 | else if (h == NULL | |
4998 | || !(h->elf_link_hash_flags | |
4999 | & ELF_LINK_HASH_DEF_DYNAMIC)) | |
5000 | tls_m &= ~TLS_LD; | |
5001 | ||
5002 | /* We might have multiple got entries for this sym. | |
5003 | Initialize them all. */ | |
5004 | do | |
7619e7c7 | 5005 | { |
70bccea4 AM |
5006 | int tls_ty = 0; |
5007 | ||
5008 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 5009 | { |
70bccea4 AM |
5010 | tls_ty = TLS_TLS | TLS_LD; |
5011 | tls_m &= ~TLS_LD; | |
5012 | } | |
5013 | else if ((tls_m & TLS_GD) != 0) | |
5014 | { | |
5015 | tls_ty = TLS_TLS | TLS_GD; | |
5016 | tls_m &= ~TLS_GD; | |
5017 | } | |
5018 | else if ((tls_m & TLS_DTPREL) != 0) | |
5019 | { | |
5020 | tls_ty = TLS_TLS | TLS_DTPREL; | |
5021 | tls_m &= ~TLS_DTPREL; | |
5022 | } | |
5023 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5024 | { | |
5025 | tls_ty = TLS_TLS | TLS_TPREL; | |
5026 | tls_m = 0; | |
7619e7c7 | 5027 | } |
7619e7c7 | 5028 | |
70bccea4 | 5029 | /* Generate relocs for the dynamic linker. */ |
4e795f50 AM |
5030 | if ((info->shared || indx != 0) |
5031 | && (h == NULL | |
5032 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5033 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 5034 | { |
70bccea4 AM |
5035 | outrel.r_offset = (htab->got->output_section->vma |
5036 | + htab->got->output_offset | |
5037 | + off); | |
e515b051 | 5038 | outrel.r_addend = 0; |
70bccea4 AM |
5039 | if (tls_ty & (TLS_LD | TLS_GD)) |
5040 | { | |
5041 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
5042 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5043 | { | |
5044 | loc = htab->relgot->contents; | |
5045 | loc += (htab->relgot->reloc_count++ | |
5046 | * sizeof (Elf32_External_Rela)); | |
5047 | bfd_elf32_swap_reloca_out (output_bfd, | |
5048 | &outrel, loc); | |
e515b051 | 5049 | outrel.r_offset += 4; |
70bccea4 AM |
5050 | outrel.r_info |
5051 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
5052 | } |
5053 | } | |
5054 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
5055 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
5056 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
5057 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
5058 | else if (indx == 0) | |
5059 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); | |
5060 | else | |
5061 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); | |
70bccea4 | 5062 | if (indx == 0) |
e515b051 AM |
5063 | { |
5064 | outrel.r_addend += relocation; | |
5065 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
5066 | outrel.r_addend -= htab->tls_sec->vma; | |
5067 | } | |
70bccea4 AM |
5068 | loc = htab->relgot->contents; |
5069 | loc += (htab->relgot->reloc_count++ | |
5070 | * sizeof (Elf32_External_Rela)); | |
5071 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
5072 | } |
5073 | ||
70bccea4 AM |
5074 | /* Init the .got section contents if we're not |
5075 | emitting a reloc. */ | |
5076 | else | |
7619e7c7 | 5077 | { |
70bccea4 AM |
5078 | bfd_vma value = relocation; |
5079 | ||
7b609f53 AM |
5080 | if (tls_ty == (TLS_TLS | TLS_LD)) |
5081 | value = 1; | |
5082 | else if (tls_ty != 0) | |
70bccea4 AM |
5083 | { |
5084 | value -= htab->tls_sec->vma + DTP_OFFSET; | |
7b609f53 | 5085 | if (tls_ty == (TLS_TLS | TLS_TPREL)) |
70bccea4 | 5086 | value += DTP_OFFSET - TP_OFFSET; |
70bccea4 | 5087 | |
7b609f53 AM |
5088 | if (tls_ty == (TLS_TLS | TLS_GD)) |
5089 | { | |
5090 | bfd_put_32 (output_bfd, value, | |
5091 | htab->got->contents + off + 4); | |
5092 | value = 1; | |
5093 | } | |
70bccea4 | 5094 | } |
70bccea4 AM |
5095 | bfd_put_32 (output_bfd, value, |
5096 | htab->got->contents + off); | |
7619e7c7 | 5097 | } |
70bccea4 AM |
5098 | |
5099 | off += 4; | |
5100 | if (tls_ty & (TLS_LD | TLS_GD)) | |
5101 | off += 4; | |
7619e7c7 | 5102 | } |
70bccea4 AM |
5103 | while (tls_m != 0); |
5104 | ||
5105 | off = *offp; | |
5106 | *offp = off | 1; | |
7619e7c7 AM |
5107 | } |
5108 | ||
5109 | if (off >= (bfd_vma) -2) | |
5110 | abort (); | |
5111 | ||
70bccea4 AM |
5112 | if ((tls_type & TLS_TLS) != 0) |
5113 | { | |
5114 | if (tls_type != (TLS_TLS | TLS_LD)) | |
5115 | { | |
5116 | if ((tls_mask & TLS_LD) != 0 | |
5117 | && !(h == NULL | |
5118 | || !(h->elf_link_hash_flags | |
5119 | & ELF_LINK_HASH_DEF_DYNAMIC))) | |
5120 | off += 8; | |
5121 | if (tls_type != (TLS_TLS | TLS_GD)) | |
5122 | { | |
5123 | if ((tls_mask & TLS_GD) != 0) | |
5124 | off += 8; | |
5125 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
5126 | { | |
5127 | if ((tls_mask & TLS_DTPREL) != 0) | |
5128 | off += 4; | |
5129 | } | |
5130 | } | |
5131 | } | |
5132 | } | |
5133 | ||
7619e7c7 AM |
5134 | relocation = htab->got->output_offset + off - 4; |
5135 | ||
5136 | /* Addends on got relocations don't make much sense. | |
5137 | x+off@got is actually x@got+off, and since the got is | |
5138 | generated by a hash table traversal, the value in the | |
5139 | got at entry m+n bears little relation to the entry m. */ | |
5140 | if (addend != 0) | |
5141 | (*_bfd_error_handler) | |
7b609f53 | 5142 | (_("%s(%s+0x%lx): non-zero addend on %s reloc against `%s'"), |
7619e7c7 AM |
5143 | bfd_archive_filename (input_bfd), |
5144 | bfd_get_section_name (input_bfd, input_section), | |
5145 | (long) rel->r_offset, | |
7b609f53 | 5146 | howto->name, |
7619e7c7 AM |
5147 | sym_name); |
5148 | } | |
70bccea4 | 5149 | break; |
7619e7c7 | 5150 | |
252b5132 | 5151 | /* Relocations that need no special processing. */ |
7619e7c7 | 5152 | case R_PPC_LOCAL24PC: |
252b5132 RH |
5153 | /* It makes no sense to point a local relocation |
5154 | at a symbol not in this object. */ | |
7b609f53 | 5155 | if (unresolved_reloc) |
252b5132 | 5156 | { |
464e1740 ILT |
5157 | if (! (*info->callbacks->undefined_symbol) (info, |
5158 | h->root.root.string, | |
5159 | input_bfd, | |
5160 | input_section, | |
5cc7c785 | 5161 | rel->r_offset, |
b34976b6 AM |
5162 | TRUE)) |
5163 | return FALSE; | |
252b5132 RH |
5164 | continue; |
5165 | } | |
5166 | break; | |
5167 | ||
7619e7c7 AM |
5168 | case R_PPC_DTPREL16: |
5169 | case R_PPC_DTPREL16_LO: | |
5170 | case R_PPC_DTPREL16_HI: | |
5171 | case R_PPC_DTPREL16_HA: | |
5172 | addend -= htab->tls_sec->vma + DTP_OFFSET; | |
5173 | break; | |
5174 | ||
70bccea4 AM |
5175 | /* Relocations that may need to be propagated if this is a shared |
5176 | object. */ | |
7619e7c7 AM |
5177 | case R_PPC_TPREL16: |
5178 | case R_PPC_TPREL16_LO: | |
5179 | case R_PPC_TPREL16_HI: | |
5180 | case R_PPC_TPREL16_HA: | |
5181 | addend -= htab->tls_sec->vma + TP_OFFSET; | |
5182 | /* The TPREL16 relocs shouldn't really be used in shared | |
5183 | libs as they will result in DT_TEXTREL being set, but | |
5184 | support them anyway. */ | |
5185 | goto dodyn; | |
5186 | ||
5187 | case R_PPC_TPREL32: | |
5188 | addend -= htab->tls_sec->vma + TP_OFFSET; | |
5189 | goto dodyn; | |
5190 | ||
5191 | case R_PPC_DTPREL32: | |
5192 | addend -= htab->tls_sec->vma + DTP_OFFSET; | |
5193 | goto dodyn; | |
5194 | ||
e515b051 AM |
5195 | case R_PPC_DTPMOD32: |
5196 | relocation = 1; | |
5197 | addend = 0; | |
5198 | goto dodyn; | |
5199 | ||
7619e7c7 AM |
5200 | case R_PPC_REL24: |
5201 | case R_PPC_REL32: | |
5202 | case R_PPC_REL14: | |
5203 | case R_PPC_REL14_BRTAKEN: | |
5204 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
5205 | /* If these relocations are not to a named symbol, they can be |
5206 | handled right here, no need to bother the dynamic linker. */ | |
5207 | if (h == NULL | |
e1e0340b GK |
5208 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
5209 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
252b5132 | 5210 | break; |
70bccea4 | 5211 | /* fall through */ |
252b5132 | 5212 | |
70bccea4 AM |
5213 | /* Relocations that always need to be propagated if this is a shared |
5214 | object. */ | |
7619e7c7 AM |
5215 | case R_PPC_ADDR32: |
5216 | case R_PPC_ADDR24: | |
5217 | case R_PPC_ADDR16: | |
5218 | case R_PPC_ADDR16_LO: | |
5219 | case R_PPC_ADDR16_HI: | |
5220 | case R_PPC_ADDR16_HA: | |
5221 | case R_PPC_ADDR14: | |
5222 | case R_PPC_ADDR14_BRTAKEN: | |
5223 | case R_PPC_ADDR14_BRNTAKEN: | |
5224 | case R_PPC_UADDR32: | |
5225 | case R_PPC_UADDR16: | |
ee05f2fe AM |
5226 | /* r_symndx will be zero only for relocs against symbols |
5227 | from removed linkonce sections, or sections discarded by | |
5228 | a linker script. */ | |
7619e7c7 | 5229 | dodyn: |
ee05f2fe AM |
5230 | if (r_symndx == 0) |
5231 | break; | |
5232 | /* Fall thru. */ | |
5233 | ||
5234 | if ((info->shared | |
4e795f50 AM |
5235 | && (h == NULL |
5236 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5237 | || h->root.type != bfd_link_hash_undefweak) | |
ee05f2fe AM |
5238 | && (MUST_BE_DYN_RELOC (r_type) |
5239 | || (h != NULL | |
09695f56 | 5240 | && !SYMBOL_CALLS_LOCAL (info, h)))) |
ee05f2fe AM |
5241 | || (ELIMINATE_COPY_RELOCS |
5242 | && !info->shared | |
5243 | && (input_section->flags & SEC_ALLOC) != 0 | |
5244 | && h != NULL | |
5245 | && h->dynindx != -1 | |
5246 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
5247 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5248 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 5249 | { |
0bb2d96a | 5250 | int skip; |
252b5132 RH |
5251 | |
5252 | #ifdef DEBUG | |
55fd94b0 AM |
5253 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
5254 | "create relocation for %s\n", | |
70bccea4 AM |
5255 | (h && h->root.root.string |
5256 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
5257 | #endif |
5258 | ||
5259 | /* When generating a shared object, these relocations | |
70bccea4 AM |
5260 | are copied into the output file to be resolved at run |
5261 | time. */ | |
252b5132 RH |
5262 | if (sreloc == NULL) |
5263 | { | |
5264 | const char *name; | |
5265 | ||
5266 | name = (bfd_elf_string_from_elf_section | |
5267 | (input_bfd, | |
5268 | elf_elfheader (input_bfd)->e_shstrndx, | |
5269 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
5270 | if (name == NULL) | |
b34976b6 | 5271 | return FALSE; |
252b5132 RH |
5272 | |
5273 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
5274 | && strcmp (bfd_get_section_name (input_bfd, | |
5275 | input_section), | |
5276 | name + 5) == 0); | |
5277 | ||
7619e7c7 | 5278 | sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); |
252b5132 RH |
5279 | BFD_ASSERT (sreloc != NULL); |
5280 | } | |
5281 | ||
0bb2d96a | 5282 | skip = 0; |
252b5132 | 5283 | |
c629eae0 JJ |
5284 | outrel.r_offset = |
5285 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5286 | rel->r_offset); | |
0bb2d96a JJ |
5287 | if (outrel.r_offset == (bfd_vma) -1 |
5288 | || outrel.r_offset == (bfd_vma) -2) | |
5289 | skip = (int) outrel.r_offset; | |
252b5132 RH |
5290 | outrel.r_offset += (input_section->output_section->vma |
5291 | + input_section->output_offset); | |
5292 | ||
5293 | if (skip) | |
5294 | memset (&outrel, 0, sizeof outrel); | |
ee05f2fe AM |
5295 | else if (h != NULL |
5296 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
252b5132 | 5297 | { |
7619e7c7 | 5298 | unresolved_reloc = FALSE; |
252b5132 RH |
5299 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
5300 | outrel.r_addend = rel->r_addend; | |
5301 | } | |
5302 | else | |
5303 | { | |
47388f4c AM |
5304 | outrel.r_addend = relocation + rel->r_addend; |
5305 | ||
252b5132 | 5306 | if (r_type == R_PPC_ADDR32) |
47388f4c | 5307 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); |
252b5132 RH |
5308 | else |
5309 | { | |
5310 | long indx; | |
5311 | ||
47388f4c | 5312 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
5313 | indx = 0; |
5314 | else if (sec == NULL || sec->owner == NULL) | |
5315 | { | |
5316 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5317 | return FALSE; |
252b5132 RH |
5318 | } |
5319 | else | |
5320 | { | |
5321 | asection *osec; | |
5322 | ||
47388f4c AM |
5323 | /* We are turning this relocation into one |
5324 | against a section symbol. It would be | |
5325 | proper to subtract the symbol's value, | |
5326 | osec->vma, from the emitted reloc addend, | |
5327 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
5328 | osec = sec->output_section; |
5329 | indx = elf_section_data (osec)->dynindx; | |
8da6118f | 5330 | BFD_ASSERT (indx > 0); |
252b5132 RH |
5331 | #ifdef DEBUG |
5332 | if (indx <= 0) | |
55fd94b0 AM |
5333 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
5334 | indx, osec->name, osec->flags, | |
5335 | h->root.root.string); | |
252b5132 RH |
5336 | #endif |
5337 | } | |
5338 | ||
5339 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 RH |
5340 | } |
5341 | } | |
5342 | ||
947216bf AM |
5343 | loc = sreloc->contents; |
5344 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
5345 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 5346 | |
2243deae | 5347 | if (skip == -1) |
252b5132 | 5348 | continue; |
2243deae L |
5349 | |
5350 | /* This reloc will be computed at runtime. We clear the memory | |
5351 | so that it contains predictable value. */ | |
5352 | if (! skip | |
5353 | && ((input_section->flags & SEC_ALLOC) != 0 | |
5354 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
5355 | { | |
5356 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
5357 | addend = 0; | |
5358 | break; | |
5359 | } | |
252b5132 | 5360 | } |
252b5132 RH |
5361 | break; |
5362 | ||
70bccea4 | 5363 | /* Indirect .sdata relocation. */ |
7619e7c7 AM |
5364 | case R_PPC_EMB_SDAI16: |
5365 | BFD_ASSERT (htab->sdata != NULL); | |
5366 | relocation | |
3dab13f6 AM |
5367 | = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, |
5368 | htab->sdata, h, relocation, | |
5369 | rel, R_PPC_RELATIVE); | |
252b5132 RH |
5370 | break; |
5371 | ||
70bccea4 | 5372 | /* Indirect .sdata2 relocation. */ |
7619e7c7 AM |
5373 | case R_PPC_EMB_SDA2I16: |
5374 | BFD_ASSERT (htab->sdata2 != NULL); | |
5375 | relocation | |
3dab13f6 AM |
5376 | = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, |
5377 | htab->sdata2, h, relocation, | |
5378 | rel, R_PPC_RELATIVE); | |
252b5132 RH |
5379 | break; |
5380 | ||
70bccea4 AM |
5381 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
5382 | section, not the actual VMA. This is appropriate when generating | |
5383 | an embedded ELF object, for which the .got section acts like the | |
5384 | AIX .toc section. */ | |
7619e7c7 | 5385 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
55fd94b0 | 5386 | BFD_ASSERT (sec != NULL); |
252b5132 RH |
5387 | BFD_ASSERT (bfd_is_und_section (sec) |
5388 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
5389 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0) | |
5390 | ||
70bccea4 | 5391 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
5392 | break; |
5393 | ||
7619e7c7 | 5394 | case R_PPC_PLTREL24: |
252b5132 | 5395 | /* Relocation is to the entry for this symbol in the |
70bccea4 | 5396 | procedure linkage table. */ |
252b5132 RH |
5397 | BFD_ASSERT (h != NULL); |
5398 | ||
5399 | if (h->plt.offset == (bfd_vma) -1 | |
7619e7c7 | 5400 | || htab->plt == NULL) |
252b5132 RH |
5401 | { |
5402 | /* We didn't make a PLT entry for this symbol. This | |
70bccea4 AM |
5403 | happens when statically linking PIC code, or when |
5404 | using -Bsymbolic. */ | |
252b5132 RH |
5405 | break; |
5406 | } | |
5407 | ||
7619e7c7 AM |
5408 | unresolved_reloc = FALSE; |
5409 | relocation = (htab->plt->output_section->vma | |
5410 | + htab->plt->output_offset | |
252b5132 | 5411 | + h->plt.offset); |
8da6118f | 5412 | break; |
252b5132 | 5413 | |
70bccea4 | 5414 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 5415 | case R_PPC_SDAREL16: |
252b5132 RH |
5416 | { |
5417 | const char *name; | |
7619e7c7 | 5418 | const struct elf_link_hash_entry *sh; |
252b5132 | 5419 | |
55fd94b0 | 5420 | BFD_ASSERT (sec != NULL); |
252b5132 | 5421 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5422 | if (! ((strncmp (name, ".sdata", 6) == 0 |
5423 | && (name[6] == 0 || name[6] == '.')) | |
5424 | || (strncmp (name, ".sbss", 5) == 0 | |
5425 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 | 5426 | { |
55fd94b0 AM |
5427 | (*_bfd_error_handler) |
5428 | (_("%s: the target (%s) of a %s relocation is " | |
5429 | "in the wrong output section (%s)"), | |
5430 | bfd_archive_filename (input_bfd), | |
5431 | sym_name, | |
5432 | howto->name, | |
5433 | name); | |
252b5132 | 5434 | } |
7619e7c7 AM |
5435 | sh = htab->sdata->sym_hash; |
5436 | addend -= (sh->root.u.def.value | |
5437 | + sh->root.u.def.section->output_section->vma | |
5438 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5439 | } |
5440 | break; | |
5441 | ||
70bccea4 | 5442 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 5443 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
5444 | { |
5445 | const char *name; | |
7619e7c7 | 5446 | const struct elf_link_hash_entry *sh; |
252b5132 | 5447 | |
55fd94b0 | 5448 | BFD_ASSERT (sec != NULL); |
252b5132 | 5449 | name = bfd_get_section_name (abfd, sec->output_section); |
5f819128 AM |
5450 | if (! (strncmp (name, ".sdata2", 7) == 0 |
5451 | || strncmp (name, ".sbss2", 6) == 0)) | |
252b5132 | 5452 | { |
55fd94b0 AM |
5453 | (*_bfd_error_handler) |
5454 | (_("%s: the target (%s) of a %s relocation is " | |
5455 | "in the wrong output section (%s)"), | |
5456 | bfd_archive_filename (input_bfd), | |
5457 | sym_name, | |
5458 | howto->name, | |
5459 | name); | |
c3668558 | 5460 | |
252b5132 | 5461 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5462 | ret = FALSE; |
252b5132 RH |
5463 | continue; |
5464 | } | |
7619e7c7 AM |
5465 | sh = htab->sdata2->sym_hash; |
5466 | addend -= (sh->root.u.def.value | |
5467 | + sh->root.u.def.section->output_section->vma | |
5468 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5469 | } |
5470 | break; | |
5471 | ||
70bccea4 | 5472 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 AM |
5473 | case R_PPC_EMB_SDA21: |
5474 | case R_PPC_EMB_RELSDA: | |
252b5132 RH |
5475 | { |
5476 | const char *name; | |
7619e7c7 | 5477 | const struct elf_link_hash_entry *sh; |
252b5132 RH |
5478 | int reg; |
5479 | ||
55fd94b0 | 5480 | BFD_ASSERT (sec != NULL); |
252b5132 | 5481 | name = bfd_get_section_name (abfd, sec->output_section); |
b34976b6 | 5482 | if (((strncmp (name, ".sdata", 6) == 0 |
5f819128 AM |
5483 | && (name[6] == 0 || name[6] == '.')) |
5484 | || (strncmp (name, ".sbss", 5) == 0 | |
5485 | && (name[5] == 0 || name[5] == '.')))) | |
252b5132 RH |
5486 | { |
5487 | reg = 13; | |
7619e7c7 AM |
5488 | sh = htab->sdata->sym_hash; |
5489 | addend -= (sh->root.u.def.value | |
5490 | + sh->root.u.def.section->output_section->vma | |
5491 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5492 | } |
5493 | ||
5f819128 AM |
5494 | else if (strncmp (name, ".sdata2", 7) == 0 |
5495 | || strncmp (name, ".sbss2", 6) == 0) | |
252b5132 RH |
5496 | { |
5497 | reg = 2; | |
7619e7c7 AM |
5498 | sh = htab->sdata2->sym_hash; |
5499 | addend -= (sh->root.u.def.value | |
5500 | + sh->root.u.def.section->output_section->vma | |
5501 | + sh->root.u.def.section->output_offset); | |
252b5132 RH |
5502 | } |
5503 | ||
8da6118f KH |
5504 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
5505 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
5506 | { |
5507 | reg = 0; | |
5508 | } | |
5509 | ||
5510 | else | |
5511 | { | |
55fd94b0 AM |
5512 | (*_bfd_error_handler) |
5513 | (_("%s: the target (%s) of a %s relocation is " | |
5514 | "in the wrong output section (%s)"), | |
5515 | bfd_archive_filename (input_bfd), | |
5516 | sym_name, | |
5517 | howto->name, | |
5518 | name); | |
252b5132 RH |
5519 | |
5520 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5521 | ret = FALSE; |
252b5132 RH |
5522 | continue; |
5523 | } | |
5524 | ||
5525 | if (r_type == R_PPC_EMB_SDA21) | |
5526 | { /* fill in register field */ | |
7619e7c7 | 5527 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
252b5132 | 5528 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
7619e7c7 | 5529 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
5530 | } |
5531 | } | |
5532 | break; | |
5533 | ||
70bccea4 | 5534 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
5535 | case R_PPC_SECTOFF: |
5536 | case R_PPC_SECTOFF_LO: | |
5537 | case R_PPC_SECTOFF_HI: | |
5538 | case R_PPC_SECTOFF_HA: | |
55fd94b0 | 5539 | BFD_ASSERT (sec != NULL); |
252b5132 | 5540 | addend -= sec->output_section->vma; |
252b5132 RH |
5541 | break; |
5542 | ||
70bccea4 | 5543 | /* Negative relocations. */ |
7619e7c7 AM |
5544 | case R_PPC_EMB_NADDR32: |
5545 | case R_PPC_EMB_NADDR16: | |
5546 | case R_PPC_EMB_NADDR16_LO: | |
5547 | case R_PPC_EMB_NADDR16_HI: | |
5548 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 5549 | addend -= 2 * relocation; |
252b5132 RH |
5550 | break; |
5551 | ||
7619e7c7 AM |
5552 | case R_PPC_COPY: |
5553 | case R_PPC_GLOB_DAT: | |
5554 | case R_PPC_JMP_SLOT: | |
5555 | case R_PPC_RELATIVE: | |
5556 | case R_PPC_PLT32: | |
5557 | case R_PPC_PLTREL32: | |
5558 | case R_PPC_PLT16_LO: | |
5559 | case R_PPC_PLT16_HI: | |
5560 | case R_PPC_PLT16_HA: | |
5561 | case R_PPC_ADDR30: | |
5562 | case R_PPC_EMB_RELSEC16: | |
5563 | case R_PPC_EMB_RELST_LO: | |
5564 | case R_PPC_EMB_RELST_HI: | |
5565 | case R_PPC_EMB_RELST_HA: | |
5566 | case R_PPC_EMB_BIT_FLD: | |
5567 | (*_bfd_error_handler) | |
7b609f53 | 5568 | (_("%s: relocation %s is not yet supported for symbol %s."), |
7619e7c7 AM |
5569 | bfd_archive_filename (input_bfd), |
5570 | howto->name, | |
5571 | sym_name); | |
252b5132 RH |
5572 | |
5573 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 5574 | ret = FALSE; |
252b5132 | 5575 | continue; |
7619e7c7 | 5576 | } |
252b5132 | 5577 | |
7619e7c7 AM |
5578 | /* Do any further special processing. */ |
5579 | switch (r_type) | |
5580 | { | |
5581 | default: | |
5582 | break; | |
5583 | ||
5584 | case R_PPC_ADDR16_HA: | |
5585 | case R_PPC_GOT16_HA: | |
5586 | case R_PPC_PLT16_HA: | |
5587 | case R_PPC_SECTOFF_HA: | |
5588 | case R_PPC_TPREL16_HA: | |
5589 | case R_PPC_DTPREL16_HA: | |
5590 | case R_PPC_GOT_TLSGD16_HA: | |
5591 | case R_PPC_GOT_TLSLD16_HA: | |
5592 | case R_PPC_GOT_TPREL16_HA: | |
5593 | case R_PPC_GOT_DTPREL16_HA: | |
5594 | case R_PPC_EMB_NADDR16_HA: | |
5595 | case R_PPC_EMB_RELST_HA: | |
5596 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 5597 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
5598 | 'sec' would be NULL, and we should leave the symbol |
5599 | alone (it will be set to zero elsewhere in the link). */ | |
5600 | if (sec != NULL) | |
e515b051 AM |
5601 | /* Add 0x10000 if sign bit in 0:15 is set. |
5602 | Bits 0:15 are not used. */ | |
5603 | addend += 0x8000; | |
7619e7c7 | 5604 | break; |
252b5132 RH |
5605 | } |
5606 | ||
252b5132 | 5607 | #ifdef DEBUG |
55fd94b0 AM |
5608 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
5609 | "offset = %ld, addend = %ld\n", | |
252b5132 | 5610 | howto->name, |
8da6118f | 5611 | (int) r_type, |
252b5132 RH |
5612 | sym_name, |
5613 | r_symndx, | |
7619e7c7 | 5614 | (long) rel->r_offset, |
8da6118f | 5615 | (long) addend); |
252b5132 RH |
5616 | #endif |
5617 | ||
7619e7c7 AM |
5618 | if (unresolved_reloc |
5619 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
5620 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
5621 | { | |
5622 | (*_bfd_error_handler) | |
7b609f53 | 5623 | (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"), |
7619e7c7 AM |
5624 | bfd_archive_filename (input_bfd), |
5625 | bfd_get_section_name (input_bfd, input_section), | |
5626 | (long) rel->r_offset, | |
7b609f53 | 5627 | howto->name, |
7619e7c7 AM |
5628 | sym_name); |
5629 | ret = FALSE; | |
5630 | } | |
5631 | ||
252b5132 RH |
5632 | r = _bfd_final_link_relocate (howto, |
5633 | input_bfd, | |
5634 | input_section, | |
5635 | contents, | |
7619e7c7 | 5636 | rel->r_offset, |
252b5132 RH |
5637 | relocation, |
5638 | addend); | |
5639 | ||
7619e7c7 | 5640 | if (r != bfd_reloc_ok) |
252b5132 | 5641 | { |
7619e7c7 AM |
5642 | if (sym_name == NULL) |
5643 | sym_name = "(null)"; | |
5644 | if (r == bfd_reloc_overflow) | |
252b5132 | 5645 | { |
7619e7c7 AM |
5646 | if (warned) |
5647 | continue; | |
5648 | if (h != NULL | |
5649 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
5650 | && howto->pc_relative) |
5651 | { | |
5652 | /* Assume this is a call protected by other code that | |
5653 | detect the symbol is undefined. If this is the case, | |
5654 | we can safely ignore the overflow. If not, the | |
5655 | program is hosed anyway, and a little warning isn't | |
5656 | going to help. */ | |
252b5132 | 5657 | |
dc1bc0c9 RH |
5658 | continue; |
5659 | } | |
252b5132 | 5660 | |
7619e7c7 AM |
5661 | if (! (*info->callbacks->reloc_overflow) (info, |
5662 | sym_name, | |
5663 | howto->name, | |
5664 | rel->r_addend, | |
5665 | input_bfd, | |
5666 | input_section, | |
5667 | rel->r_offset)) | |
5668 | return FALSE; | |
dc1bc0c9 RH |
5669 | } |
5670 | else | |
5671 | { | |
7619e7c7 | 5672 | (*_bfd_error_handler) |
7b609f53 | 5673 | (_("%s(%s+0x%lx): %s reloc against `%s': error %d"), |
7619e7c7 AM |
5674 | bfd_archive_filename (input_bfd), |
5675 | bfd_get_section_name (input_bfd, input_section), | |
7b609f53 | 5676 | (long) rel->r_offset, howto->name, sym_name, (int) r); |
7619e7c7 | 5677 | ret = FALSE; |
252b5132 RH |
5678 | } |
5679 | } | |
5680 | } | |
5681 | ||
252b5132 RH |
5682 | #ifdef DEBUG |
5683 | fprintf (stderr, "\n"); | |
5684 | #endif | |
5685 | ||
5686 | return ret; | |
5687 | } | |
29c2fb7c AJ |
5688 | |
5689 | static enum elf_reloc_type_class | |
55fd94b0 | 5690 | ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
29c2fb7c | 5691 | { |
55fd94b0 | 5692 | switch (ELF32_R_TYPE (rela->r_info)) |
29c2fb7c AJ |
5693 | { |
5694 | case R_PPC_RELATIVE: | |
5695 | return reloc_class_relative; | |
5696 | case R_PPC_REL24: | |
5697 | case R_PPC_ADDR24: | |
5698 | case R_PPC_JMP_SLOT: | |
5699 | return reloc_class_plt; | |
5700 | case R_PPC_COPY: | |
5701 | return reloc_class_copy; | |
5702 | default: | |
5703 | return reloc_class_normal; | |
5704 | } | |
5705 | } | |
252b5132 | 5706 | \f |
ae9a127f NC |
5707 | /* Support for core dump NOTE sections. */ |
5708 | ||
b34976b6 | 5709 | static bfd_boolean |
55fd94b0 | 5710 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
c5fccbec DJ |
5711 | { |
5712 | int offset; | |
dc810e39 | 5713 | unsigned int raw_size; |
c5fccbec DJ |
5714 | |
5715 | switch (note->descsz) | |
5716 | { | |
70bccea4 AM |
5717 | default: |
5718 | return FALSE; | |
c5fccbec | 5719 | |
70bccea4 AM |
5720 | case 268: /* Linux/PPC. */ |
5721 | /* pr_cursig */ | |
5722 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
c5fccbec | 5723 | |
70bccea4 AM |
5724 | /* pr_pid */ |
5725 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
c5fccbec | 5726 | |
70bccea4 AM |
5727 | /* pr_reg */ |
5728 | offset = 72; | |
5729 | raw_size = 192; | |
c5fccbec | 5730 | |
70bccea4 | 5731 | break; |
c5fccbec DJ |
5732 | } |
5733 | ||
5734 | /* Make a ".reg/999" section. */ | |
5735 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
5736 | raw_size, note->descpos + offset); | |
5737 | } | |
5738 | ||
b34976b6 | 5739 | static bfd_boolean |
55fd94b0 | 5740 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
c5fccbec DJ |
5741 | { |
5742 | switch (note->descsz) | |
5743 | { | |
70bccea4 AM |
5744 | default: |
5745 | return FALSE; | |
c5fccbec | 5746 | |
70bccea4 AM |
5747 | case 128: /* Linux/PPC elf_prpsinfo. */ |
5748 | elf_tdata (abfd)->core_program | |
5749 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); | |
5750 | elf_tdata (abfd)->core_command | |
5751 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); | |
c5fccbec DJ |
5752 | } |
5753 | ||
5754 | /* Note that for some reason, a spurious space is tacked | |
5755 | onto the end of the args in some (at least one anyway) | |
5756 | implementations, so strip it off if it exists. */ | |
5757 | ||
5758 | { | |
5759 | char *command = elf_tdata (abfd)->core_command; | |
5760 | int n = strlen (command); | |
5761 | ||
5762 | if (0 < n && command[n - 1] == ' ') | |
5763 | command[n - 1] = '\0'; | |
5764 | } | |
5765 | ||
b34976b6 | 5766 | return TRUE; |
c5fccbec DJ |
5767 | } |
5768 | \f | |
e1a9cb8e NC |
5769 | /* Very simple linked list structure for recording apuinfo values. */ |
5770 | typedef struct apuinfo_list | |
5771 | { | |
70bccea4 AM |
5772 | struct apuinfo_list *next; |
5773 | unsigned long value; | |
e1a9cb8e NC |
5774 | } |
5775 | apuinfo_list; | |
5776 | ||
55fd94b0 | 5777 | static apuinfo_list *head; |
e1a9cb8e NC |
5778 | |
5779 | ||
e1a9cb8e | 5780 | static void |
55fd94b0 | 5781 | apuinfo_list_init (void) |
e1a9cb8e NC |
5782 | { |
5783 | head = NULL; | |
5784 | } | |
5785 | ||
5786 | static void | |
55fd94b0 | 5787 | apuinfo_list_add (unsigned long value) |
e1a9cb8e | 5788 | { |
70bccea4 | 5789 | apuinfo_list *entry = head; |
e1a9cb8e NC |
5790 | |
5791 | while (entry != NULL) | |
5792 | { | |
5793 | if (entry->value == value) | |
5794 | return; | |
5795 | entry = entry->next; | |
5796 | } | |
5797 | ||
5798 | entry = bfd_malloc (sizeof (* entry)); | |
5799 | if (entry == NULL) | |
5800 | return; | |
5801 | ||
5802 | entry->value = value; | |
5803 | entry->next = head; | |
5804 | head = entry; | |
5805 | } | |
5806 | ||
5807 | static unsigned | |
55fd94b0 | 5808 | apuinfo_list_length (void) |
e1a9cb8e | 5809 | { |
70bccea4 | 5810 | apuinfo_list *entry; |
e1a9cb8e NC |
5811 | unsigned long count; |
5812 | ||
5813 | for (entry = head, count = 0; | |
5814 | entry; | |
5815 | entry = entry->next) | |
5816 | ++ count; | |
5817 | ||
5818 | return count; | |
5819 | } | |
5820 | ||
5821 | static inline unsigned long | |
55fd94b0 | 5822 | apuinfo_list_element (unsigned long number) |
e1a9cb8e NC |
5823 | { |
5824 | apuinfo_list * entry; | |
5825 | ||
5826 | for (entry = head; | |
5827 | entry && number --; | |
5828 | entry = entry->next) | |
5829 | ; | |
5830 | ||
5831 | return entry ? entry->value : 0; | |
5832 | } | |
5833 | ||
5834 | static void | |
55fd94b0 | 5835 | apuinfo_list_finish (void) |
e1a9cb8e | 5836 | { |
70bccea4 | 5837 | apuinfo_list *entry; |
e1a9cb8e NC |
5838 | |
5839 | for (entry = head; entry;) | |
5840 | { | |
70bccea4 | 5841 | apuinfo_list *next = entry->next; |
e1a9cb8e NC |
5842 | free (entry); |
5843 | entry = next; | |
5844 | } | |
5845 | ||
5846 | head = NULL; | |
5847 | } | |
5848 | ||
70bccea4 AM |
5849 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
5850 | #define APUINFO_LABEL "APUinfo" | |
e1a9cb8e NC |
5851 | |
5852 | /* Scan the input BFDs and create a linked list of | |
5853 | the APUinfo values that will need to be emitted. */ | |
5854 | ||
55fd94b0 AM |
5855 | static void |
5856 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
e1a9cb8e | 5857 | { |
70bccea4 AM |
5858 | bfd *ibfd; |
5859 | asection *asec; | |
5860 | char *buffer; | |
5861 | unsigned num_input_sections; | |
e1a9cb8e | 5862 | bfd_size_type output_section_size; |
70bccea4 AM |
5863 | unsigned i; |
5864 | unsigned num_entries; | |
e1a9cb8e NC |
5865 | unsigned long offset; |
5866 | unsigned long length; | |
70bccea4 | 5867 | const char *error_message = NULL; |
e1a9cb8e | 5868 | |
6b0817e5 NC |
5869 | if (link_info == NULL) |
5870 | return; | |
5871 | ||
e1a9cb8e NC |
5872 | /* Scan the input bfds, looking for apuinfo sections. */ |
5873 | num_input_sections = 0; | |
5874 | output_section_size = 0; | |
5875 | ||
5876 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
5877 | { | |
5878 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); | |
5879 | if (asec) | |
5880 | { | |
5881 | ++ num_input_sections; | |
5882 | output_section_size += asec->_raw_size; | |
5883 | } | |
5884 | } | |
5885 | ||
5886 | /* We need at least one input sections | |
5887 | in order to make merging worthwhile. */ | |
5888 | if (num_input_sections < 1) | |
5889 | return; | |
5890 | ||
5891 | /* Just make sure that the output section exists as well. */ | |
5892 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
5893 | if (asec == NULL) | |
5894 | return; | |
5895 | ||
5896 | /* Allocate a buffer for the contents of the input sections. */ | |
5897 | buffer = bfd_malloc (output_section_size); | |
5898 | if (buffer == NULL) | |
5899 | return; | |
5900 | ||
5901 | offset = 0; | |
5902 | apuinfo_list_init (); | |
5903 | ||
5904 | /* Read in the input sections contents. */ | |
5905 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) | |
5906 | { | |
70bccea4 AM |
5907 | unsigned long datum; |
5908 | char *ptr; | |
86bbe32f | 5909 | |
e1a9cb8e NC |
5910 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
5911 | if (asec == NULL) | |
5912 | continue; | |
5913 | ||
5914 | length = asec->_raw_size; | |
5915 | if (length < 24) | |
5916 | { | |
5917 | error_message = _("corrupt or empty %s section in %s"); | |
5918 | goto fail; | |
5919 | } | |
86bbe32f | 5920 | |
e1a9cb8e NC |
5921 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
5922 | || (bfd_bread (buffer + offset, length, ibfd) != length)) | |
5923 | { | |
5924 | error_message = _("unable to read in %s section from %s"); | |
5925 | goto fail; | |
5926 | } | |
5927 | ||
5928 | /* Process the contents of the section. */ | |
5929 | ptr = buffer + offset; | |
5930 | error_message = _("corrupt %s section in %s"); | |
5931 | ||
5932 | /* Verify the contents of the header. Note - we have to | |
5933 | extract the values this way in order to allow for a | |
5934 | host whose endian-ness is different from the target. */ | |
5935 | datum = bfd_get_32 (ibfd, ptr); | |
5936 | if (datum != sizeof APUINFO_LABEL) | |
5937 | goto fail; | |
5938 | ||
5939 | datum = bfd_get_32 (ibfd, ptr + 8); | |
5940 | if (datum != 0x2) | |
5941 | goto fail; | |
5942 | ||
5943 | if (strcmp (ptr + 12, APUINFO_LABEL) != 0) | |
5944 | goto fail; | |
5945 | ||
88810f8c | 5946 | /* Get the number of bytes used for apuinfo entries. */ |
e1a9cb8e | 5947 | datum = bfd_get_32 (ibfd, ptr + 4); |
88810f8c | 5948 | if (datum + 20 != length) |
e1a9cb8e NC |
5949 | goto fail; |
5950 | ||
5951 | /* Make sure that we do not run off the end of the section. */ | |
5952 | if (offset + length > output_section_size) | |
5953 | goto fail; | |
5954 | ||
5955 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ | |
88810f8c MM |
5956 | for (i = 0; i < datum; i += 4) |
5957 | apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); | |
e1a9cb8e NC |
5958 | |
5959 | /* Update the offset. */ | |
5960 | offset += length; | |
5961 | } | |
5962 | ||
5963 | error_message = NULL; | |
5964 | ||
5965 | /* Compute the size of the output section. */ | |
5966 | num_entries = apuinfo_list_length (); | |
5967 | output_section_size = 20 + num_entries * 4; | |
5968 | ||
5969 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
5970 | ||
70bccea4 | 5971 | if (! bfd_set_section_size (abfd, asec, output_section_size)) |
e1a9cb8e NC |
5972 | ibfd = abfd, |
5973 | error_message = _("warning: unable to set size of %s section in %s"); | |
86bbe32f | 5974 | |
e1a9cb8e NC |
5975 | fail: |
5976 | free (buffer); | |
5977 | ||
5978 | if (error_message) | |
70bccea4 AM |
5979 | (*_bfd_error_handler) (error_message, APUINFO_SECTION_NAME, |
5980 | bfd_archive_filename (ibfd)); | |
e1a9cb8e NC |
5981 | } |
5982 | ||
5983 | ||
5984 | /* Prevent the output section from accumulating the input sections' | |
5985 | contents. We have already stored this in our linked list structure. */ | |
5986 | ||
55fd94b0 AM |
5987 | static bfd_boolean |
5988 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
5989 | asection *asec, | |
5990 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
e1a9cb8e | 5991 | { |
70bccea4 AM |
5992 | return (apuinfo_list_length () |
5993 | && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); | |
e1a9cb8e NC |
5994 | } |
5995 | ||
5996 | ||
5997 | /* Finally we can generate the output section. */ | |
5998 | ||
55fd94b0 AM |
5999 | static void |
6000 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
e1a9cb8e | 6001 | { |
70bccea4 AM |
6002 | bfd_byte *buffer; |
6003 | asection *asec; | |
6004 | unsigned i; | |
6005 | unsigned num_entries; | |
e1a9cb8e NC |
6006 | bfd_size_type length; |
6007 | ||
6008 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
6009 | if (asec == NULL) | |
6010 | return; | |
6011 | ||
6b0817e5 NC |
6012 | if (apuinfo_list_length () == 0) |
6013 | return; | |
6014 | ||
e1a9cb8e NC |
6015 | length = asec->_raw_size; |
6016 | if (length < 20) | |
6017 | return; | |
6018 | ||
6019 | buffer = bfd_malloc (length); | |
6020 | if (buffer == NULL) | |
6021 | { | |
70bccea4 AM |
6022 | (*_bfd_error_handler) |
6023 | (_("failed to allocate space for new APUinfo section.")); | |
e1a9cb8e NC |
6024 | return; |
6025 | } | |
6026 | ||
6027 | /* Create the apuinfo header. */ | |
6028 | num_entries = apuinfo_list_length (); | |
6029 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
88810f8c | 6030 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); |
e1a9cb8e NC |
6031 | bfd_put_32 (abfd, 0x2, buffer + 8); |
6032 | strcpy (buffer + 12, APUINFO_LABEL); | |
86bbe32f | 6033 | |
e1a9cb8e NC |
6034 | length = 20; |
6035 | for (i = 0; i < num_entries; i++) | |
6036 | { | |
6037 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); | |
6038 | length += 4; | |
6039 | } | |
6040 | ||
6041 | if (length != asec->_raw_size) | |
70bccea4 | 6042 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); |
86bbe32f | 6043 | |
e1a9cb8e | 6044 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
70bccea4 | 6045 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); |
86bbe32f | 6046 | |
e1a9cb8e NC |
6047 | free (buffer); |
6048 | ||
6049 | apuinfo_list_finish (); | |
6050 | } | |
6051 | \f | |
252b5132 RH |
6052 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
6053 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
6054 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec | |
6055 | #define TARGET_BIG_NAME "elf32-powerpc" | |
6056 | #define ELF_ARCH bfd_arch_powerpc | |
6057 | #define ELF_MACHINE_CODE EM_PPC | |
6058 | #define ELF_MAXPAGESIZE 0x10000 | |
6059 | #define elf_info_to_howto ppc_elf_info_to_howto | |
6060 | ||
6061 | #ifdef EM_CYGNUS_POWERPC | |
6062 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
6063 | #endif | |
6064 | ||
6065 | #ifdef EM_PPC_OLD | |
6066 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
6067 | #endif | |
6068 | ||
6069 | #define elf_backend_plt_not_loaded 1 | |
6070 | #define elf_backend_got_symbol_offset 4 | |
6071 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 6072 | #define elf_backend_can_refcount 1 |
252b5132 RH |
6073 | #define elf_backend_got_header_size 12 |
6074 | #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE | |
b491616a | 6075 | #define elf_backend_rela_normal 1 |
252b5132 | 6076 | |
252b5132 | 6077 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 6078 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 RH |
6079 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
6080 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
70bccea4 | 6081 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
252b5132 | 6082 | |
feee612b | 6083 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
6084 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
6085 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
6086 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
6087 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
6088 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
6089 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 6090 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
6091 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
6092 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
6093 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
6094 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
6095 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
6096 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
6097 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
6098 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map | |
c5fccbec DJ |
6099 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
6100 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
29c2fb7c | 6101 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
6102 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
6103 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
6104 | #define elf_backend_write_section ppc_elf_write_section | |
252b5132 RH |
6105 | |
6106 | #include "elf32-target.h" |