Commit | Line | Data |
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90ace9e9 | 1 | /* VAX series support for 32-bit ELF |
b2a8e766 AM |
2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
3 | 2004 Free Software Foundation, Inc. | |
90ace9e9 JT |
4 | Contributed by Matt Thomas <matt@3am-software.com>. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
90ace9e9 | 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. | |
90ace9e9 | 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. | |
90ace9e9 | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
90ace9e9 JT |
21 | |
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/vax.h" | |
28 | ||
29 | static reloc_howto_type *reloc_type_lookup | |
30 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
31 | static void rtype_to_howto | |
947216bf | 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
90ace9e9 JT |
33 | static struct bfd_hash_entry *elf_vax_link_hash_newfunc |
34 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
35 | static struct bfd_link_hash_table *elf_vax_link_hash_table_create | |
36 | PARAMS ((bfd *)); | |
b34976b6 | 37 | static bfd_boolean elf_vax_check_relocs |
90ace9e9 JT |
38 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
39 | const Elf_Internal_Rela *)); | |
40 | static asection *elf_vax_gc_mark_hook | |
1e2f5b6e | 41 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
90ace9e9 | 42 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 43 | static bfd_boolean elf_vax_gc_sweep_hook |
90ace9e9 JT |
44 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
45 | const Elf_Internal_Rela *)); | |
b34976b6 | 46 | static bfd_boolean elf_vax_adjust_dynamic_symbol |
90ace9e9 | 47 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 48 | static bfd_boolean elf_vax_size_dynamic_sections |
90ace9e9 | 49 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 50 | static bfd_boolean elf_vax_relocate_section |
90ace9e9 JT |
51 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
52 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 53 | static bfd_boolean elf_vax_finish_dynamic_symbol |
90ace9e9 JT |
54 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
55 | Elf_Internal_Sym *)); | |
b34976b6 | 56 | static bfd_boolean elf_vax_finish_dynamic_sections |
90ace9e9 JT |
57 | PARAMS ((bfd *, struct bfd_link_info *)); |
58 | ||
b34976b6 | 59 | static bfd_boolean elf32_vax_set_private_flags |
90ace9e9 | 60 | PARAMS ((bfd *, flagword)); |
b34976b6 | 61 | static bfd_boolean elf32_vax_merge_private_bfd_data |
90ace9e9 | 62 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 63 | static bfd_boolean elf32_vax_print_private_bfd_data |
90ace9e9 JT |
64 | PARAMS ((bfd *, PTR)); |
65 | ||
66 | static reloc_howto_type howto_table[] = { | |
67 | HOWTO (R_VAX_NONE, /* type */ | |
68 | 0, /* rightshift */ | |
69 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
70 | 0, /* bitsize */ | |
b34976b6 | 71 | FALSE, /* pc_relative */ |
90ace9e9 JT |
72 | 0, /* bitpos */ |
73 | complain_overflow_dont, /* complain_on_overflow */ | |
74 | bfd_elf_generic_reloc, /* special_function */ | |
75 | "R_VAX_NONE", /* name */ | |
b34976b6 | 76 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
77 | 0, /* src_mask */ |
78 | 0x00000000, /* dst_mask */ | |
b34976b6 | 79 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
80 | |
81 | HOWTO (R_VAX_32, /* type */ | |
82 | 0, /* rightshift */ | |
83 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
84 | 32, /* bitsize */ | |
b34976b6 | 85 | FALSE, /* pc_relative */ |
90ace9e9 JT |
86 | 0, /* bitpos */ |
87 | complain_overflow_bitfield, /* complain_on_overflow */ | |
88 | bfd_elf_generic_reloc, /* special_function */ | |
89 | "R_VAX_32", /* name */ | |
b34976b6 | 90 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
91 | 0, /* src_mask */ |
92 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 93 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
94 | |
95 | HOWTO (R_VAX_16, /* type */ | |
96 | 0, /* rightshift */ | |
97 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
98 | 16, /* bitsize */ | |
b34976b6 | 99 | FALSE, /* pc_relative */ |
90ace9e9 JT |
100 | 0, /* bitpos */ |
101 | complain_overflow_bitfield, /* complain_on_overflow */ | |
102 | bfd_elf_generic_reloc, /* special_function */ | |
103 | "R_VAX_16", /* name */ | |
b34976b6 | 104 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
105 | 0, /* src_mask */ |
106 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 107 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
108 | |
109 | HOWTO (R_VAX_8, /* type */ | |
110 | 0, /* rightshift */ | |
111 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
112 | 8, /* bitsize */ | |
b34976b6 | 113 | FALSE, /* pc_relative */ |
90ace9e9 JT |
114 | 0, /* bitpos */ |
115 | complain_overflow_bitfield, /* complain_on_overflow */ | |
116 | bfd_elf_generic_reloc, /* special_function */ | |
117 | "R_VAX_8", /* name */ | |
b34976b6 | 118 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
119 | 0, /* src_mask */ |
120 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 121 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
122 | |
123 | HOWTO (R_VAX_PC32, /* type */ | |
124 | 0, /* rightshift */ | |
125 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
126 | 32, /* bitsize */ | |
b34976b6 | 127 | TRUE, /* pc_relative */ |
90ace9e9 JT |
128 | 0, /* bitpos */ |
129 | complain_overflow_bitfield, /* complain_on_overflow */ | |
130 | bfd_elf_generic_reloc, /* special_function */ | |
131 | "R_VAX_PC32", /* name */ | |
b34976b6 | 132 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
133 | 0, /* src_mask */ |
134 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 135 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
136 | |
137 | HOWTO (R_VAX_PC16, /* type */ | |
138 | 0, /* rightshift */ | |
139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
140 | 16, /* bitsize */ | |
b34976b6 | 141 | TRUE, /* pc_relative */ |
90ace9e9 JT |
142 | 0, /* bitpos */ |
143 | complain_overflow_signed, /* complain_on_overflow */ | |
144 | bfd_elf_generic_reloc, /* special_function */ | |
145 | "R_VAX_PC16", /* name */ | |
b34976b6 | 146 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
147 | 0, /* src_mask */ |
148 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 149 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
150 | |
151 | HOWTO (R_VAX_PC8, /* type */ | |
152 | 0, /* rightshift */ | |
153 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
154 | 8, /* bitsize */ | |
b34976b6 | 155 | TRUE, /* pc_relative */ |
90ace9e9 JT |
156 | 0, /* bitpos */ |
157 | complain_overflow_signed, /* complain_on_overflow */ | |
158 | bfd_elf_generic_reloc, /* special_function */ | |
159 | "R_VAX_PC8", /* name */ | |
b34976b6 | 160 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
161 | 0, /* src_mask */ |
162 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 163 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
164 | |
165 | HOWTO (R_VAX_GOT32, /* type */ | |
166 | 0, /* rightshift */ | |
167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
168 | 32, /* bitsize */ | |
b34976b6 | 169 | TRUE, /* pc_relative */ |
90ace9e9 JT |
170 | 0, /* bitpos */ |
171 | complain_overflow_bitfield, /* complain_on_overflow */ | |
172 | bfd_elf_generic_reloc, /* special_function */ | |
173 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 174 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
175 | 0, /* src_mask */ |
176 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 177 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
178 | |
179 | EMPTY_HOWTO (-1), | |
180 | EMPTY_HOWTO (-1), | |
181 | EMPTY_HOWTO (-1), | |
182 | EMPTY_HOWTO (-1), | |
183 | EMPTY_HOWTO (-1), | |
184 | ||
185 | HOWTO (R_VAX_PLT32, /* type */ | |
186 | 0, /* rightshift */ | |
187 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
188 | 32, /* bitsize */ | |
b34976b6 | 189 | TRUE, /* pc_relative */ |
90ace9e9 JT |
190 | 0, /* bitpos */ |
191 | complain_overflow_bitfield, /* complain_on_overflow */ | |
192 | bfd_elf_generic_reloc, /* special_function */ | |
193 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 194 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
195 | 0, /* src_mask */ |
196 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 197 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
198 | |
199 | EMPTY_HOWTO (-1), | |
200 | EMPTY_HOWTO (-1), | |
201 | EMPTY_HOWTO (-1), | |
202 | EMPTY_HOWTO (-1), | |
203 | EMPTY_HOWTO (-1), | |
204 | ||
205 | HOWTO (R_VAX_COPY, /* type */ | |
206 | 0, /* rightshift */ | |
207 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
208 | 0, /* bitsize */ | |
b34976b6 | 209 | FALSE, /* pc_relative */ |
90ace9e9 JT |
210 | 0, /* bitpos */ |
211 | complain_overflow_dont, /* complain_on_overflow */ | |
212 | bfd_elf_generic_reloc, /* special_function */ | |
213 | "R_VAX_COPY", /* name */ | |
b34976b6 | 214 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
215 | 0, /* src_mask */ |
216 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 217 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
218 | |
219 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
220 | 0, /* rightshift */ | |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 32, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
90ace9e9 JT |
224 | 0, /* bitpos */ |
225 | complain_overflow_dont, /* complain_on_overflow */ | |
226 | bfd_elf_generic_reloc, /* special_function */ | |
227 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
229 | 0, /* src_mask */ |
230 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
232 | |
233 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 32, /* bitsize */ | |
b34976b6 | 237 | FALSE, /* pc_relative */ |
90ace9e9 JT |
238 | 0, /* bitpos */ |
239 | complain_overflow_dont, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 242 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
243 | 0, /* src_mask */ |
244 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 245 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
246 | |
247 | HOWTO (R_VAX_RELATIVE, /* type */ | |
248 | 0, /* rightshift */ | |
249 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
250 | 32, /* bitsize */ | |
b34976b6 | 251 | FALSE, /* pc_relative */ |
90ace9e9 JT |
252 | 0, /* bitpos */ |
253 | complain_overflow_dont, /* complain_on_overflow */ | |
254 | bfd_elf_generic_reloc, /* special_function */ | |
255 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 256 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
257 | 0, /* src_mask */ |
258 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 259 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
260 | |
261 | /* GNU extension to record C++ vtable hierarchy */ | |
262 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 0, /* bitsize */ | |
b34976b6 | 266 | FALSE, /* pc_relative */ |
90ace9e9 JT |
267 | 0, /* bitpos */ |
268 | complain_overflow_dont, /* complain_on_overflow */ | |
269 | NULL, /* special_function */ | |
270 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 271 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
272 | 0, /* src_mask */ |
273 | 0, /* dst_mask */ | |
b34976b6 | 274 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
275 | |
276 | /* GNU extension to record C++ vtable member usage */ | |
277 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 0, /* bitsize */ | |
b34976b6 | 281 | FALSE, /* pc_relative */ |
90ace9e9 JT |
282 | 0, /* bitpos */ |
283 | complain_overflow_dont, /* complain_on_overflow */ | |
284 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
285 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 286 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
287 | 0, /* src_mask */ |
288 | 0, /* dst_mask */ | |
b34976b6 | 289 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
290 | }; |
291 | ||
292 | static void | |
293 | rtype_to_howto (abfd, cache_ptr, dst) | |
294 | bfd *abfd ATTRIBUTE_UNUSED; | |
295 | arelent *cache_ptr; | |
296 | Elf_Internal_Rela *dst; | |
297 | { | |
298 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
299 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
300 | } | |
301 | ||
302 | #define elf_info_to_howto rtype_to_howto | |
303 | ||
304 | static const struct | |
305 | { | |
306 | bfd_reloc_code_real_type bfd_val; | |
307 | int elf_val; | |
308 | } reloc_map[] = { | |
309 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
310 | { BFD_RELOC_32, R_VAX_32 }, | |
311 | { BFD_RELOC_16, R_VAX_16 }, | |
312 | { BFD_RELOC_8, R_VAX_8 }, | |
313 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
314 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
315 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
316 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
317 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
318 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
319 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
320 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
321 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
322 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
323 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
324 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
325 | }; | |
326 | ||
327 | static reloc_howto_type * | |
328 | reloc_type_lookup (abfd, code) | |
329 | bfd *abfd ATTRIBUTE_UNUSED; | |
330 | bfd_reloc_code_real_type code; | |
331 | { | |
332 | unsigned int i; | |
333 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
334 | { | |
335 | if (reloc_map[i].bfd_val == code) | |
336 | return &howto_table[reloc_map[i].elf_val]; | |
337 | } | |
338 | return 0; | |
339 | } | |
340 | ||
341 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
342 | #define ELF_ARCH bfd_arch_vax | |
343 | /* end code generated by elf.el */ | |
90ace9e9 JT |
344 | \f |
345 | /* Functions for the VAX ELF linker. */ | |
346 | ||
347 | /* The name of the dynamic interpreter. This is put in the .interp | |
348 | section. */ | |
349 | ||
350 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
351 | ||
352 | /* The size in bytes of an entry in the procedure linkage table. */ | |
353 | ||
354 | #define PLT_ENTRY_SIZE 12 | |
355 | ||
356 | /* The first entry in a procedure linkage table looks like this. See | |
357 | the SVR4 ABI VAX supplement to see how this works. */ | |
358 | ||
359 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
360 | { | |
361 | 0xdd, 0xef, /* pushl l^ */ | |
362 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
363 | 0x17, 0xff, /* jmp @L^(pc) */ | |
364 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
365 | }; | |
366 | ||
367 | /* Subsequent entries in a procedure linkage table look like this. */ | |
368 | ||
369 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
370 | { | |
371 | 0x40, 0x00, /* .word ^M<r6> */ | |
372 | 0x16, 0xef, /* jsb L^(pc) */ | |
373 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ | |
374 | 0, 0, 0, 0, /* index into .rela.plt */ | |
375 | }; | |
376 | ||
377 | /* The VAX linker needs to keep track of the number of relocs that it | |
378 | decides to copy in check_relocs for each symbol. This is so that it | |
379 | can discard PC relative relocs if it doesn't need them when linking | |
380 | with -Bsymbolic. We store the information in a field extending the | |
381 | regular ELF linker hash table. */ | |
382 | ||
383 | /* This structure keeps track of the number of PC relative relocs we have | |
384 | copied for a given symbol. */ | |
385 | ||
386 | struct elf_vax_pcrel_relocs_copied | |
387 | { | |
388 | /* Next section. */ | |
389 | struct elf_vax_pcrel_relocs_copied *next; | |
390 | /* A section in dynobj. */ | |
391 | asection *section; | |
392 | /* Number of relocs copied in this section. */ | |
393 | bfd_size_type count; | |
394 | }; | |
395 | ||
396 | /* VAX ELF linker hash entry. */ | |
397 | ||
398 | struct elf_vax_link_hash_entry | |
399 | { | |
400 | struct elf_link_hash_entry root; | |
401 | ||
402 | /* Number of PC relative relocs copied for this symbol. */ | |
403 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
404 | ||
405 | bfd_vma got_addend; | |
406 | }; | |
407 | ||
408 | /* VAX ELF linker hash table. */ | |
409 | ||
410 | struct elf_vax_link_hash_table | |
411 | { | |
412 | struct elf_link_hash_table root; | |
413 | }; | |
414 | ||
415 | /* Declare this now that the above structures are defined. */ | |
416 | ||
b34976b6 | 417 | static bfd_boolean elf_vax_discard_copies |
90ace9e9 JT |
418 | PARAMS ((struct elf_vax_link_hash_entry *, PTR)); |
419 | ||
b29635ba JT |
420 | /* Declare this now that the above structures are defined. */ |
421 | ||
b34976b6 | 422 | static bfd_boolean elf_vax_instantiate_got_entries |
b29635ba JT |
423 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
424 | ||
90ace9e9 JT |
425 | /* Traverse an VAX ELF linker hash table. */ |
426 | ||
427 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
428 | (elf_link_hash_traverse \ | |
429 | (&(table)->root, \ | |
b34976b6 | 430 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
90ace9e9 JT |
431 | (info))) |
432 | ||
433 | /* Get the VAX ELF linker hash table from a link_info structure. */ | |
434 | ||
435 | #define elf_vax_hash_table(p) \ | |
436 | ((struct elf_vax_link_hash_table *) (p)->hash) | |
437 | ||
438 | /* Create an entry in an VAX ELF linker hash table. */ | |
439 | ||
440 | static struct bfd_hash_entry * | |
441 | elf_vax_link_hash_newfunc (entry, table, string) | |
442 | struct bfd_hash_entry *entry; | |
443 | struct bfd_hash_table *table; | |
444 | const char *string; | |
445 | { | |
446 | struct elf_vax_link_hash_entry *ret = | |
447 | (struct elf_vax_link_hash_entry *) entry; | |
448 | ||
449 | /* Allocate the structure if it has not already been allocated by a | |
450 | subclass. */ | |
451 | if (ret == (struct elf_vax_link_hash_entry *) NULL) | |
452 | ret = ((struct elf_vax_link_hash_entry *) | |
453 | bfd_hash_allocate (table, | |
454 | sizeof (struct elf_vax_link_hash_entry))); | |
455 | if (ret == (struct elf_vax_link_hash_entry *) NULL) | |
456 | return (struct bfd_hash_entry *) ret; | |
457 | ||
458 | /* Call the allocation method of the superclass. */ | |
459 | ret = ((struct elf_vax_link_hash_entry *) | |
460 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
461 | table, string)); | |
462 | if (ret != (struct elf_vax_link_hash_entry *) NULL) | |
463 | { | |
464 | ret->pcrel_relocs_copied = NULL; | |
465 | } | |
466 | ||
467 | return (struct bfd_hash_entry *) ret; | |
468 | } | |
469 | ||
470 | /* Create an VAX ELF linker hash table. */ | |
471 | ||
472 | static struct bfd_link_hash_table * | |
473 | elf_vax_link_hash_table_create (abfd) | |
474 | bfd *abfd; | |
475 | { | |
476 | struct elf_vax_link_hash_table *ret; | |
477 | bfd_size_type amt = sizeof (struct elf_vax_link_hash_table); | |
478 | ||
479 | ret = (struct elf_vax_link_hash_table *) bfd_malloc (amt); | |
480 | if (ret == (struct elf_vax_link_hash_table *) NULL) | |
481 | return NULL; | |
482 | ||
483 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
484 | elf_vax_link_hash_newfunc)) | |
485 | { | |
486 | free (ret); | |
487 | return NULL; | |
488 | } | |
489 | ||
490 | return &ret->root.root; | |
491 | } | |
492 | ||
493 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 494 | static bfd_boolean |
90ace9e9 JT |
495 | elf32_vax_set_private_flags (abfd, flags) |
496 | bfd *abfd; | |
497 | flagword flags; | |
498 | { | |
499 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
500 | elf_flags_init (abfd) = TRUE; |
501 | return TRUE; | |
90ace9e9 JT |
502 | } |
503 | ||
504 | /* Merge backend specific data from an object file to the output | |
505 | object file when linking. */ | |
b34976b6 | 506 | static bfd_boolean |
90ace9e9 JT |
507 | elf32_vax_merge_private_bfd_data (ibfd, obfd) |
508 | bfd *ibfd; | |
509 | bfd *obfd; | |
510 | { | |
511 | flagword out_flags; | |
512 | flagword in_flags; | |
513 | ||
514 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
515 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 516 | return TRUE; |
90ace9e9 JT |
517 | |
518 | in_flags = elf_elfheader (ibfd)->e_flags; | |
519 | out_flags = elf_elfheader (obfd)->e_flags; | |
520 | ||
521 | if (!elf_flags_init (obfd)) | |
522 | { | |
b34976b6 | 523 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
524 | elf_elfheader (obfd)->e_flags = in_flags; |
525 | } | |
526 | ||
b34976b6 | 527 | return TRUE; |
90ace9e9 JT |
528 | } |
529 | ||
530 | /* Display the flags field */ | |
b34976b6 | 531 | static bfd_boolean |
90ace9e9 JT |
532 | elf32_vax_print_private_bfd_data (abfd, ptr) |
533 | bfd *abfd; | |
534 | PTR ptr; | |
535 | { | |
536 | FILE *file = (FILE *) ptr; | |
537 | ||
538 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
539 | ||
540 | /* Print normal ELF private data. */ | |
541 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
542 | ||
543 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
544 | ||
545 | /* xgettext:c-format */ | |
546 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
547 | ||
179d3252 | 548 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
549 | fprintf (file, _(" [nonpic]")); |
550 | ||
179d3252 | 551 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
552 | fprintf (file, _(" [d-float]")); |
553 | ||
179d3252 | 554 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
555 | fprintf (file, _(" [g-float]")); |
556 | ||
557 | fputc ('\n', file); | |
558 | ||
b34976b6 | 559 | return TRUE; |
90ace9e9 JT |
560 | } |
561 | /* Look through the relocs for a section during the first phase, and | |
562 | allocate space in the global offset table or procedure linkage | |
563 | table. */ | |
564 | ||
b34976b6 | 565 | static bfd_boolean |
90ace9e9 JT |
566 | elf_vax_check_relocs (abfd, info, sec, relocs) |
567 | bfd *abfd; | |
568 | struct bfd_link_info *info; | |
569 | asection *sec; | |
570 | const Elf_Internal_Rela *relocs; | |
571 | { | |
572 | bfd *dynobj; | |
573 | Elf_Internal_Shdr *symtab_hdr; | |
574 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
575 | const Elf_Internal_Rela *rel; |
576 | const Elf_Internal_Rela *rel_end; | |
577 | asection *sgot; | |
578 | asection *srelgot; | |
579 | asection *sreloc; | |
580 | ||
1049f94e | 581 | if (info->relocatable) |
b34976b6 | 582 | return TRUE; |
90ace9e9 JT |
583 | |
584 | dynobj = elf_hash_table (info)->dynobj; | |
585 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
586 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
587 | |
588 | sgot = NULL; | |
589 | srelgot = NULL; | |
590 | sreloc = NULL; | |
591 | ||
592 | rel_end = relocs + sec->reloc_count; | |
593 | for (rel = relocs; rel < rel_end; rel++) | |
594 | { | |
595 | unsigned long r_symndx; | |
596 | struct elf_link_hash_entry *h; | |
597 | ||
598 | r_symndx = ELF32_R_SYM (rel->r_info); | |
599 | ||
600 | if (r_symndx < symtab_hdr->sh_info) | |
601 | h = NULL; | |
602 | else | |
603 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
604 | ||
605 | switch (ELF32_R_TYPE (rel->r_info)) | |
606 | { | |
607 | case R_VAX_GOT32: | |
608 | if (h != NULL | |
609 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
610 | break; | |
611 | ||
612 | /* This symbol requires a global offset table entry. */ | |
613 | ||
614 | if (dynobj == NULL) | |
615 | { | |
616 | /* Create the .got section. */ | |
617 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
618 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 619 | return FALSE; |
90ace9e9 JT |
620 | } |
621 | ||
622 | if (sgot == NULL) | |
623 | { | |
624 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
625 | BFD_ASSERT (sgot != NULL); | |
626 | } | |
627 | ||
628 | if (srelgot == NULL | |
629 | && (h != NULL || info->shared)) | |
630 | { | |
631 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
632 | if (srelgot == NULL) | |
633 | { | |
634 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
635 | if (srelgot == NULL | |
636 | || !bfd_set_section_flags (dynobj, srelgot, | |
637 | (SEC_ALLOC | |
638 | | SEC_LOAD | |
639 | | SEC_HAS_CONTENTS | |
640 | | SEC_IN_MEMORY | |
641 | | SEC_LINKER_CREATED | |
642 | | SEC_READONLY)) | |
643 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 644 | return FALSE; |
90ace9e9 JT |
645 | } |
646 | } | |
647 | ||
648 | if (h != NULL) | |
649 | { | |
650 | struct elf_vax_link_hash_entry *eh; | |
651 | ||
652 | eh = (struct elf_vax_link_hash_entry *) h; | |
653 | if (h->got.refcount == -1) | |
654 | { | |
655 | h->got.refcount = 1; | |
656 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
657 | } |
658 | else | |
659 | { | |
660 | h->got.refcount++; | |
661 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
662 | (*_bfd_error_handler) | |
663 | (_("%s: warning: GOT addend of %ld to `%s' does not match previous GOT addend of %ld"), | |
664 | bfd_get_filename (abfd), rel->r_addend, | |
665 | h->root.root.string, | |
666 | eh->got_addend); | |
cedb70c5 | 667 | |
90ace9e9 JT |
668 | } |
669 | } | |
670 | break; | |
671 | ||
672 | case R_VAX_PLT32: | |
673 | /* This symbol requires a procedure linkage table entry. We | |
674 | actually build the entry in adjust_dynamic_symbol, | |
675 | because this might be a case of linking PIC code which is | |
676 | never referenced by a dynamic object, in which case we | |
677 | don't need to generate a procedure linkage table entry | |
678 | after all. */ | |
679 | ||
680 | /* If this is a local symbol, we resolve it directly without | |
681 | creating a procedure linkage table entry. */ | |
682 | if (h == NULL) | |
683 | continue; | |
684 | ||
f5385ebf | 685 | h->needs_plt = 1; |
90ace9e9 JT |
686 | if (h->plt.refcount == -1) |
687 | h->plt.refcount = 1; | |
688 | else | |
689 | h->plt.refcount++; | |
690 | break; | |
691 | ||
692 | case R_VAX_PC8: | |
693 | case R_VAX_PC16: | |
694 | case R_VAX_PC32: | |
695 | /* If we are creating a shared library and this is not a local | |
696 | symbol, we need to copy the reloc into the shared library. | |
697 | However when linking with -Bsymbolic and this is a global | |
698 | symbol which is defined in an object we are including in the | |
699 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
700 | reloc directly. At this point we have not seen all the input | |
701 | files, so it is possible that DEF_REGULAR is not set now but | |
702 | will be set later (it is never cleared). We account for that | |
703 | possibility below by storing information in the | |
704 | pcrel_relocs_copied field of the hash table entry. */ | |
705 | if (!(info->shared | |
706 | && (sec->flags & SEC_ALLOC) != 0 | |
707 | && h != NULL | |
708 | && (!info->symbolic | |
f5385ebf | 709 | || !h->def_regular))) |
90ace9e9 JT |
710 | { |
711 | if (h != NULL) | |
712 | { | |
713 | /* Make sure a plt entry is created for this symbol if | |
714 | it turns out to be a function defined by a dynamic | |
715 | object. */ | |
716 | if (h->plt.refcount == -1) | |
717 | h->plt.refcount = 1; | |
718 | else | |
719 | h->plt.refcount++; | |
720 | } | |
721 | break; | |
722 | } | |
723 | /* Fall through. */ | |
724 | case R_VAX_8: | |
725 | case R_VAX_16: | |
726 | case R_VAX_32: | |
727 | if (h != NULL) | |
728 | { | |
729 | /* Make sure a plt entry is created for this symbol if it | |
730 | turns out to be a function defined by a dynamic object. */ | |
731 | if (h->plt.refcount == -1) | |
732 | h->plt.refcount = 1; | |
733 | else | |
734 | h->plt.refcount++; | |
735 | } | |
736 | ||
737 | /* If we are creating a shared library, we need to copy the | |
738 | reloc into the shared library. */ | |
739 | if (info->shared | |
740 | && (sec->flags & SEC_ALLOC) != 0) | |
741 | { | |
742 | /* When creating a shared object, we must copy these | |
743 | reloc types into the output file. We create a reloc | |
744 | section in dynobj and make room for this reloc. */ | |
745 | if (sreloc == NULL) | |
746 | { | |
747 | const char *name; | |
748 | ||
749 | name = (bfd_elf_string_from_elf_section | |
750 | (abfd, | |
751 | elf_elfheader (abfd)->e_shstrndx, | |
752 | elf_section_data (sec)->rel_hdr.sh_name)); | |
753 | if (name == NULL) | |
b34976b6 | 754 | return FALSE; |
90ace9e9 JT |
755 | |
756 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
757 | && strcmp (bfd_get_section_name (abfd, sec), | |
758 | name + 5) == 0); | |
759 | ||
760 | sreloc = bfd_get_section_by_name (dynobj, name); | |
761 | if (sreloc == NULL) | |
762 | { | |
763 | sreloc = bfd_make_section (dynobj, name); | |
764 | if (sreloc == NULL | |
765 | || !bfd_set_section_flags (dynobj, sreloc, | |
766 | (SEC_ALLOC | |
767 | | SEC_LOAD | |
768 | | SEC_HAS_CONTENTS | |
769 | | SEC_IN_MEMORY | |
770 | | SEC_LINKER_CREATED | |
771 | | SEC_READONLY)) | |
772 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 773 | return FALSE; |
90ace9e9 JT |
774 | } |
775 | if (sec->flags & SEC_READONLY) | |
776 | info->flags |= DF_TEXTREL; | |
777 | } | |
778 | ||
eea6121a | 779 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
780 | |
781 | /* If we are linking with -Bsymbolic, we count the number of | |
782 | PC relative relocations we have entered for this symbol, | |
783 | so that we can discard them again if the symbol is later | |
784 | defined by a regular object. Note that this function is | |
19852a2a | 785 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
786 | which means that h is really a pointer to an |
787 | elf_vax_link_hash_entry. */ | |
788 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
789 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 | |
790 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
791 | && info->symbolic) | |
792 | { | |
793 | struct elf_vax_link_hash_entry *eh; | |
794 | struct elf_vax_pcrel_relocs_copied *p; | |
795 | ||
796 | eh = (struct elf_vax_link_hash_entry *) h; | |
797 | ||
798 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
799 | if (p->section == sreloc) | |
800 | break; | |
801 | ||
802 | if (p == NULL) | |
803 | { | |
804 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
805 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
806 | if (p == NULL) | |
b34976b6 | 807 | return FALSE; |
90ace9e9 JT |
808 | p->next = eh->pcrel_relocs_copied; |
809 | eh->pcrel_relocs_copied = p; | |
810 | p->section = sreloc; | |
811 | p->count = 0; | |
812 | } | |
813 | ||
814 | ++p->count; | |
815 | } | |
816 | } | |
817 | ||
818 | break; | |
819 | ||
820 | /* This relocation describes the C++ object vtable hierarchy. | |
821 | Reconstruct it for later use during GC. */ | |
822 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 823 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 824 | return FALSE; |
90ace9e9 JT |
825 | break; |
826 | ||
827 | /* This relocation describes which C++ vtable entries are actually | |
828 | used. Record for later use during GC. */ | |
829 | case R_VAX_GNU_VTENTRY: | |
c152c796 | 830 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 831 | return FALSE; |
90ace9e9 JT |
832 | break; |
833 | ||
834 | default: | |
835 | break; | |
836 | } | |
837 | } | |
838 | ||
b34976b6 | 839 | return TRUE; |
90ace9e9 JT |
840 | } |
841 | ||
842 | /* Return the section that should be marked against GC for a given | |
843 | relocation. */ | |
844 | ||
845 | static asection * | |
1e2f5b6e AM |
846 | elf_vax_gc_mark_hook (sec, info, rel, h, sym) |
847 | asection *sec; | |
90ace9e9 JT |
848 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
849 | Elf_Internal_Rela *rel; | |
850 | struct elf_link_hash_entry *h; | |
851 | Elf_Internal_Sym *sym; | |
852 | { | |
853 | if (h != NULL) | |
854 | { | |
855 | switch (ELF32_R_TYPE (rel->r_info)) | |
856 | { | |
857 | case R_VAX_GNU_VTINHERIT: | |
858 | case R_VAX_GNU_VTENTRY: | |
859 | break; | |
860 | ||
861 | default: | |
862 | switch (h->root.type) | |
863 | { | |
864 | default: | |
865 | break; | |
866 | ||
867 | case bfd_link_hash_defined: | |
868 | case bfd_link_hash_defweak: | |
869 | return h->root.u.def.section; | |
870 | ||
871 | case bfd_link_hash_common: | |
872 | return h->root.u.c.p->section; | |
873 | } | |
874 | } | |
875 | } | |
876 | else | |
1e2f5b6e | 877 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
90ace9e9 JT |
878 | |
879 | return NULL; | |
880 | } | |
881 | ||
882 | /* Update the got entry reference counts for the section being removed. */ | |
883 | ||
b34976b6 | 884 | static bfd_boolean |
90ace9e9 JT |
885 | elf_vax_gc_sweep_hook (abfd, info, sec, relocs) |
886 | bfd *abfd; | |
887 | struct bfd_link_info *info; | |
888 | asection *sec; | |
889 | const Elf_Internal_Rela *relocs; | |
890 | { | |
891 | Elf_Internal_Shdr *symtab_hdr; | |
892 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 893 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 894 | bfd *dynobj; |
90ace9e9 | 895 | |
90ace9e9 JT |
896 | dynobj = elf_hash_table (info)->dynobj; |
897 | if (dynobj == NULL) | |
b34976b6 | 898 | return TRUE; |
90ace9e9 | 899 | |
babfd660 KH |
900 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
901 | sym_hashes = elf_sym_hashes (abfd); | |
902 | ||
90ace9e9 JT |
903 | relend = relocs + sec->reloc_count; |
904 | for (rel = relocs; rel < relend; rel++) | |
905 | { | |
babfd660 KH |
906 | unsigned long r_symndx; |
907 | struct elf_link_hash_entry *h; | |
908 | ||
90ace9e9 JT |
909 | switch (ELF32_R_TYPE (rel->r_info)) |
910 | { | |
911 | case R_VAX_GOT32: | |
912 | r_symndx = ELF32_R_SYM (rel->r_info); | |
913 | if (r_symndx >= symtab_hdr->sh_info) | |
914 | { | |
915 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
916 | if (h->got.refcount > 0) | |
b29635ba | 917 | --h->got.refcount; |
90ace9e9 JT |
918 | } |
919 | break; | |
920 | ||
921 | case R_VAX_PLT32: | |
922 | case R_VAX_PC8: | |
923 | case R_VAX_PC16: | |
924 | case R_VAX_PC32: | |
925 | case R_VAX_8: | |
926 | case R_VAX_16: | |
927 | case R_VAX_32: | |
928 | r_symndx = ELF32_R_SYM (rel->r_info); | |
929 | if (r_symndx >= symtab_hdr->sh_info) | |
930 | { | |
931 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
932 | if (h->plt.refcount > 0) | |
933 | --h->plt.refcount; | |
934 | } | |
935 | break; | |
936 | ||
937 | default: | |
938 | break; | |
939 | } | |
940 | } | |
941 | ||
b34976b6 | 942 | return TRUE; |
90ace9e9 JT |
943 | } |
944 | ||
945 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
946 | regular object. The current definition is in some section of the | |
947 | dynamic object, but we're not including those sections. We have to | |
948 | change the definition to something the rest of the link can | |
949 | understand. */ | |
950 | ||
b34976b6 | 951 | static bfd_boolean |
90ace9e9 JT |
952 | elf_vax_adjust_dynamic_symbol (info, h) |
953 | struct bfd_link_info *info; | |
954 | struct elf_link_hash_entry *h; | |
955 | { | |
956 | bfd *dynobj; | |
957 | asection *s; | |
958 | unsigned int power_of_two; | |
959 | ||
960 | dynobj = elf_hash_table (info)->dynobj; | |
961 | ||
962 | /* Make sure we know what is going on here. */ | |
963 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 964 | && (h->needs_plt |
f6e332e6 | 965 | || h->u.weakdef != NULL |
f5385ebf AM |
966 | || (h->def_dynamic |
967 | && h->ref_regular | |
968 | && !h->def_regular))); | |
90ace9e9 JT |
969 | |
970 | /* If this is a function, put it in the procedure linkage table. We | |
971 | will fill in the contents of the procedure linkage table later, | |
972 | when we know the address of the .got section. */ | |
973 | if (h->type == STT_FUNC | |
f5385ebf | 974 | || h->needs_plt) |
90ace9e9 JT |
975 | { |
976 | if (! info->shared | |
f5385ebf AM |
977 | && !h->def_dynamic |
978 | && !h->ref_dynamic | |
90ace9e9 JT |
979 | /* We must always create the plt entry if it was referenced |
980 | by a PLTxxO relocation. In this case we already recorded | |
981 | it as a dynamic symbol. */ | |
982 | && h->dynindx == -1) | |
983 | { | |
984 | /* This case can occur if we saw a PLTxx reloc in an input | |
985 | file, but the symbol was never referred to by a dynamic | |
986 | object. In such a case, we don't actually need to build | |
987 | a procedure linkage table, and we can just do a PCxx | |
988 | reloc instead. */ | |
f5385ebf | 989 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 990 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 991 | return TRUE; |
90ace9e9 JT |
992 | } |
993 | ||
994 | /* GC may have rendered this entry unused. */ | |
995 | if (h->plt.refcount <= 0) | |
996 | { | |
f5385ebf | 997 | h->needs_plt = 0; |
90ace9e9 | 998 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 999 | return TRUE; |
90ace9e9 JT |
1000 | } |
1001 | ||
1002 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1003 | if (h->dynindx == -1) | |
1004 | { | |
c152c796 | 1005 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1006 | return FALSE; |
90ace9e9 JT |
1007 | } |
1008 | ||
1009 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1010 | BFD_ASSERT (s != NULL); | |
1011 | ||
1012 | /* If this is the first .plt entry, make room for the special | |
1013 | first entry. */ | |
eea6121a | 1014 | if (s->size == 0) |
90ace9e9 | 1015 | { |
eea6121a | 1016 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1017 | } |
1018 | ||
1019 | /* If this symbol is not defined in a regular file, and we are | |
1020 | not generating a shared library, then set the symbol to this | |
1021 | location in the .plt. This is required to make function | |
1022 | pointers compare as equal between the normal executable and | |
1023 | the shared library. */ | |
1024 | if (!info->shared | |
f5385ebf | 1025 | && !h->def_regular) |
90ace9e9 JT |
1026 | { |
1027 | h->root.u.def.section = s; | |
eea6121a | 1028 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1029 | } |
1030 | ||
eea6121a | 1031 | h->plt.offset = s->size; |
90ace9e9 JT |
1032 | |
1033 | /* Make room for this entry. */ | |
eea6121a | 1034 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1035 | |
1036 | /* We also need to make an entry in the .got.plt section, which | |
1037 | will be placed in the .got section by the linker script. */ | |
1038 | ||
1039 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1040 | BFD_ASSERT (s != NULL); | |
eea6121a | 1041 | s->size += 4; |
90ace9e9 JT |
1042 | |
1043 | /* We also need to make an entry in the .rela.plt section. */ | |
1044 | ||
1045 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1046 | BFD_ASSERT (s != NULL); | |
eea6121a | 1047 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1048 | |
b34976b6 | 1049 | return TRUE; |
90ace9e9 JT |
1050 | } |
1051 | ||
1052 | /* Reinitialize the plt offset now that it is not used as a reference | |
1053 | count any more. */ | |
1054 | h->plt.offset = (bfd_vma) -1; | |
1055 | ||
1056 | /* If this is a weak symbol, and there is a real definition, the | |
1057 | processor independent code will have arranged for us to see the | |
1058 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1059 | if (h->u.weakdef != NULL) |
90ace9e9 | 1060 | { |
f6e332e6 AM |
1061 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1062 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1063 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1064 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1065 | return TRUE; |
90ace9e9 JT |
1066 | } |
1067 | ||
1068 | /* This is a reference to a symbol defined by a dynamic object which | |
1069 | is not a function. */ | |
1070 | ||
1071 | /* If we are creating a shared library, we must presume that the | |
1072 | only references to the symbol are via the global offset table. | |
1073 | For such cases we need not do anything here; the relocations will | |
1074 | be handled correctly by relocate_section. */ | |
1075 | if (info->shared) | |
b34976b6 | 1076 | return TRUE; |
90ace9e9 JT |
1077 | |
1078 | /* We must allocate the symbol in our .dynbss section, which will | |
1079 | become part of the .bss section of the executable. There will be | |
1080 | an entry for this symbol in the .dynsym section. The dynamic | |
1081 | object will contain position independent code, so all references | |
1082 | from the dynamic object to this symbol will go through the global | |
1083 | offset table. The dynamic linker will use the .dynsym entry to | |
1084 | determine the address it must put in the global offset table, so | |
1085 | both the dynamic object and the regular object will refer to the | |
1086 | same memory location for the variable. */ | |
1087 | ||
1088 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1089 | BFD_ASSERT (s != NULL); | |
1090 | ||
1091 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1092 | copy the initial value out of the dynamic object and into the | |
1093 | runtime process image. We need to remember the offset into the | |
1094 | .rela.bss section we are going to use. */ | |
1095 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1096 | { | |
1097 | asection *srel; | |
1098 | ||
1099 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1100 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1101 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1102 | h->needs_copy = 1; |
90ace9e9 JT |
1103 | } |
1104 | ||
1105 | /* We need to figure out the alignment required for this symbol. I | |
1106 | have no idea how ELF linkers handle this. */ | |
1107 | power_of_two = bfd_log2 (h->size); | |
1108 | if (power_of_two > 3) | |
1109 | power_of_two = 3; | |
1110 | ||
1111 | /* Apply the required alignment. */ | |
eea6121a | 1112 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
90ace9e9 JT |
1113 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1114 | { | |
1115 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1116 | return FALSE; |
90ace9e9 JT |
1117 | } |
1118 | ||
1119 | /* Define the symbol as being at this point in the section. */ | |
1120 | h->root.u.def.section = s; | |
eea6121a | 1121 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1122 | |
1123 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1124 | s->size += h->size; |
90ace9e9 | 1125 | |
b34976b6 | 1126 | return TRUE; |
90ace9e9 JT |
1127 | } |
1128 | ||
1129 | /* Set the sizes of the dynamic sections. */ | |
1130 | ||
b34976b6 | 1131 | static bfd_boolean |
90ace9e9 JT |
1132 | elf_vax_size_dynamic_sections (output_bfd, info) |
1133 | bfd *output_bfd; | |
1134 | struct bfd_link_info *info; | |
1135 | { | |
1136 | bfd *dynobj; | |
1137 | asection *s; | |
b34976b6 AM |
1138 | bfd_boolean plt; |
1139 | bfd_boolean relocs; | |
1140 | bfd_boolean reltext; | |
90ace9e9 JT |
1141 | |
1142 | dynobj = elf_hash_table (info)->dynobj; | |
1143 | BFD_ASSERT (dynobj != NULL); | |
1144 | ||
1145 | if (elf_hash_table (info)->dynamic_sections_created) | |
1146 | { | |
1147 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1148 | if (info->executable) |
90ace9e9 JT |
1149 | { |
1150 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1151 | BFD_ASSERT (s != NULL); | |
eea6121a | 1152 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1153 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1154 | } | |
1155 | } | |
1156 | else | |
1157 | { | |
1158 | /* We may have created entries in the .rela.got and .got sections. | |
1159 | However, if we are not creating the dynamic sections, we will | |
1160 | not actually use these entries. Reset the size of .rela.got | |
1161 | and .got, which will cause it to get stripped from the output | |
1162 | file below. */ | |
1163 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1164 | if (s != NULL) | |
eea6121a | 1165 | s->size = 0; |
90ace9e9 JT |
1166 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1167 | if (s != NULL) | |
eea6121a | 1168 | s->size = 0; |
90ace9e9 JT |
1169 | s = bfd_get_section_by_name (dynobj, ".got"); |
1170 | if (s != NULL) | |
eea6121a | 1171 | s->size = 0; |
90ace9e9 JT |
1172 | } |
1173 | ||
1174 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1175 | relative relocs against symbols defined in a regular object. We | |
1176 | allocated space for them in the check_relocs routine, but we will not | |
1177 | fill them in in the relocate_section routine. */ | |
1178 | if (info->shared && info->symbolic) | |
1179 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba JT |
1180 | elf_vax_discard_copies, |
1181 | (PTR) NULL); | |
1182 | ||
b34976b6 | 1183 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1184 | discard all the got entries we've recorded. Otherwise, we need to |
1185 | instantiate (allocate space for them). */ | |
1186 | elf_link_hash_traverse (elf_hash_table (info), | |
1187 | elf_vax_instantiate_got_entries, | |
1188 | (PTR) info); | |
90ace9e9 JT |
1189 | |
1190 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1191 | determined the sizes of the various dynamic sections. Allocate | |
1192 | memory for them. */ | |
b34976b6 AM |
1193 | plt = FALSE; |
1194 | relocs = FALSE; | |
1195 | reltext = FALSE; | |
90ace9e9 JT |
1196 | for (s = dynobj->sections; s != NULL; s = s->next) |
1197 | { | |
1198 | const char *name; | |
b34976b6 | 1199 | bfd_boolean strip; |
90ace9e9 JT |
1200 | |
1201 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1202 | continue; | |
1203 | ||
1204 | /* It's OK to base decisions on the section name, because none | |
1205 | of the dynobj section names depend upon the input files. */ | |
1206 | name = bfd_get_section_name (dynobj, s); | |
1207 | ||
b34976b6 | 1208 | strip = FALSE; |
90ace9e9 JT |
1209 | |
1210 | if (strcmp (name, ".plt") == 0) | |
1211 | { | |
eea6121a | 1212 | if (s->size == 0) |
90ace9e9 JT |
1213 | { |
1214 | /* Strip this section if we don't need it; see the | |
1215 | comment below. */ | |
b34976b6 | 1216 | strip = TRUE; |
90ace9e9 JT |
1217 | } |
1218 | else | |
1219 | { | |
1220 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1221 | plt = TRUE; |
90ace9e9 JT |
1222 | } |
1223 | } | |
1224 | else if (strncmp (name, ".rela", 5) == 0) | |
1225 | { | |
eea6121a | 1226 | if (s->size == 0) |
90ace9e9 JT |
1227 | { |
1228 | /* If we don't need this section, strip it from the | |
1229 | output file. This is mostly to handle .rela.bss and | |
1230 | .rela.plt. We must create both sections in | |
1231 | create_dynamic_sections, because they must be created | |
1232 | before the linker maps input sections to output | |
1233 | sections. The linker does that before | |
1234 | adjust_dynamic_symbol is called, and it is that | |
1235 | function which decides whether anything needs to go | |
1236 | into these sections. */ | |
b34976b6 | 1237 | strip = TRUE; |
90ace9e9 JT |
1238 | } |
1239 | else | |
1240 | { | |
1241 | asection *target; | |
1242 | ||
1243 | /* Remember whether there are any reloc sections other | |
1244 | than .rela.plt. */ | |
1245 | if (strcmp (name, ".rela.plt") != 0) | |
1246 | { | |
1247 | const char *outname; | |
1248 | ||
b34976b6 | 1249 | relocs = TRUE; |
90ace9e9 JT |
1250 | |
1251 | /* If this relocation section applies to a read only | |
1252 | section, then we probably need a DT_TEXTREL | |
1253 | entry. .rela.plt is actually associated with | |
1254 | .got.plt, which is never readonly. */ | |
1255 | outname = bfd_get_section_name (output_bfd, | |
1256 | s->output_section); | |
1257 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1258 | if (target != NULL | |
1259 | && (target->flags & SEC_READONLY) != 0 | |
1260 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1261 | reltext = TRUE; |
90ace9e9 JT |
1262 | } |
1263 | ||
1264 | /* We use the reloc_count field as a counter if we need | |
1265 | to copy relocs into the output file. */ | |
1266 | s->reloc_count = 0; | |
1267 | } | |
1268 | } | |
624f0b25 | 1269 | else if (strncmp (name, ".got", 4) != 0) |
90ace9e9 JT |
1270 | { |
1271 | /* It's not one of our sections, so don't allocate space. */ | |
1272 | continue; | |
1273 | } | |
1274 | ||
1275 | if (strip) | |
1276 | { | |
1277 | _bfd_strip_section_from_output (info, s); | |
1278 | continue; | |
1279 | } | |
1280 | ||
1281 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
1282 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
1283 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 1284 | return FALSE; |
90ace9e9 JT |
1285 | } |
1286 | ||
1287 | if (elf_hash_table (info)->dynamic_sections_created) | |
1288 | { | |
1289 | /* Add some entries to the .dynamic section. We fill in the | |
1290 | values later, in elf_vax_finish_dynamic_sections, but we | |
1291 | must add the entries now so that we get the correct size for | |
1292 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1293 | dynamic linker and used by the debugger. */ | |
1294 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1295 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1296 | |
1297 | if (!info->shared) | |
1298 | { | |
1299 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1300 | return FALSE; |
90ace9e9 JT |
1301 | } |
1302 | ||
1303 | if (plt) | |
1304 | { | |
1305 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1306 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1307 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1308 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1309 | return FALSE; |
90ace9e9 JT |
1310 | } |
1311 | ||
1312 | if (relocs) | |
1313 | { | |
1314 | if (!add_dynamic_entry (DT_RELA, 0) | |
1315 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1316 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1317 | return FALSE; |
90ace9e9 JT |
1318 | } |
1319 | ||
1320 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1321 | { | |
1322 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1323 | return FALSE; |
90ace9e9 JT |
1324 | } |
1325 | } | |
1326 | #undef add_dynamic_entry | |
1327 | ||
b34976b6 | 1328 | return TRUE; |
90ace9e9 JT |
1329 | } |
1330 | ||
1331 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1332 | creating a shared object with -Bsymbolic. It discards the space | |
1333 | allocated to copy PC relative relocs against symbols which are defined | |
1334 | in regular objects. We allocated space for them in the check_relocs | |
1335 | routine, but we won't fill them in in the relocate_section routine. */ | |
1336 | ||
b34976b6 | 1337 | static bfd_boolean |
90ace9e9 JT |
1338 | elf_vax_discard_copies (h, ignore) |
1339 | struct elf_vax_link_hash_entry *h; | |
1340 | PTR ignore ATTRIBUTE_UNUSED; | |
1341 | { | |
1342 | struct elf_vax_pcrel_relocs_copied *s; | |
1343 | ||
1344 | if (h->root.root.type == bfd_link_hash_warning) | |
1345 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1346 | ||
1347 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1348 | if (!h->root.def_regular) |
b34976b6 | 1349 | return TRUE; |
90ace9e9 JT |
1350 | |
1351 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1352 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1353 | |
b34976b6 | 1354 | return TRUE; |
90ace9e9 JT |
1355 | } |
1356 | ||
b29635ba JT |
1357 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1358 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1359 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1360 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1361 | creating a shared object or executable, space in the .got and .rela.got | |
1362 | will be reserved for the symbol. */ | |
1363 | ||
b34976b6 | 1364 | static bfd_boolean |
b29635ba JT |
1365 | elf_vax_instantiate_got_entries (h, infoptr) |
1366 | struct elf_link_hash_entry *h; | |
1367 | PTR infoptr; | |
1368 | { | |
1369 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1370 | bfd *dynobj; | |
1371 | asection *sgot; | |
1372 | asection *srelgot; | |
b34976b6 | 1373 | |
b29635ba JT |
1374 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1375 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1376 | return TRUE; |
b29635ba JT |
1377 | |
1378 | dynobj = elf_hash_table (info)->dynobj; | |
1379 | if (dynobj == NULL) | |
b34976b6 | 1380 | return TRUE; |
b29635ba JT |
1381 | |
1382 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1383 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1384 | ||
1385 | if (!elf_hash_table (info)->dynamic_sections_created | |
1386 | || (info->shared && info->symbolic)) | |
1387 | { | |
1388 | h->got.refcount = 0; | |
1389 | h->got.offset = (bfd_vma) -1; | |
1390 | h->plt.refcount = 0; | |
1391 | h->plt.offset = (bfd_vma) -1; | |
1392 | } | |
1393 | else if (h->got.refcount > 0) | |
1394 | { | |
1395 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1396 | if (h->dynindx == -1) | |
1397 | { | |
c152c796 | 1398 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1399 | return FALSE; |
b29635ba JT |
1400 | } |
1401 | ||
1402 | /* Allocate space in the .got and .rela.got sections. */ | |
eea6121a AM |
1403 | sgot->size += 4; |
1404 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1405 | } |
1406 | ||
b34976b6 | 1407 | return TRUE; |
b29635ba JT |
1408 | } |
1409 | ||
90ace9e9 JT |
1410 | /* Relocate an VAX ELF section. */ |
1411 | ||
b34976b6 | 1412 | static bfd_boolean |
90ace9e9 JT |
1413 | elf_vax_relocate_section (output_bfd, info, input_bfd, input_section, |
1414 | contents, relocs, local_syms, local_sections) | |
1415 | bfd *output_bfd; | |
1416 | struct bfd_link_info *info; | |
1417 | bfd *input_bfd; | |
1418 | asection *input_section; | |
1419 | bfd_byte *contents; | |
1420 | Elf_Internal_Rela *relocs; | |
1421 | Elf_Internal_Sym *local_syms; | |
1422 | asection **local_sections; | |
1423 | { | |
1424 | bfd *dynobj; | |
1425 | Elf_Internal_Shdr *symtab_hdr; | |
1426 | struct elf_link_hash_entry **sym_hashes; | |
1427 | bfd_vma *local_got_offsets; | |
1428 | bfd_vma plt_index; | |
1429 | bfd_vma got_offset; | |
1430 | asection *sgot; | |
1431 | asection *splt; | |
1432 | asection *sgotplt; | |
1433 | asection *sreloc; | |
1434 | Elf_Internal_Rela *rel; | |
1435 | Elf_Internal_Rela *relend; | |
1436 | ||
1049f94e | 1437 | if (info->relocatable) |
b34976b6 | 1438 | return TRUE; |
f0fe0e16 | 1439 | |
90ace9e9 JT |
1440 | dynobj = elf_hash_table (info)->dynobj; |
1441 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1442 | sym_hashes = elf_sym_hashes (input_bfd); | |
1443 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1444 | ||
1445 | sgot = NULL; | |
1446 | splt = NULL; | |
1447 | sgotplt = NULL; | |
1448 | sreloc = NULL; | |
1449 | ||
1450 | rel = relocs; | |
1451 | relend = relocs + input_section->reloc_count; | |
1452 | for (; rel < relend; rel++) | |
1453 | { | |
1454 | int r_type; | |
1455 | reloc_howto_type *howto; | |
1456 | unsigned long r_symndx; | |
1457 | struct elf_link_hash_entry *h; | |
1458 | Elf_Internal_Sym *sym; | |
1459 | asection *sec; | |
1460 | bfd_vma relocation; | |
1461 | bfd_reloc_status_type r; | |
1462 | ||
1463 | r_type = ELF32_R_TYPE (rel->r_info); | |
1464 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1465 | { | |
1466 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1467 | return FALSE; |
90ace9e9 JT |
1468 | } |
1469 | howto = howto_table + r_type; | |
1470 | ||
90ace9e9 | 1471 | /* This is a final link. */ |
f0fe0e16 | 1472 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1473 | h = NULL; |
1474 | sym = NULL; | |
1475 | sec = NULL; | |
1476 | if (r_symndx < symtab_hdr->sh_info) | |
1477 | { | |
1478 | sym = local_syms + r_symndx; | |
1479 | sec = local_sections[r_symndx]; | |
8517fae7 | 1480 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1481 | } |
1482 | else | |
1483 | { | |
560e09e9 NC |
1484 | bfd_boolean unresolved_reloc; |
1485 | bfd_boolean warned; | |
1486 | ||
b2a8e766 AM |
1487 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1488 | r_symndx, symtab_hdr, sym_hashes, | |
1489 | h, sec, relocation, | |
1490 | unresolved_reloc, warned); | |
560e09e9 NC |
1491 | |
1492 | if ((h->root.type == bfd_link_hash_defined | |
90ace9e9 | 1493 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1494 | && ((r_type == R_VAX_PLT32 |
90ace9e9 JT |
1495 | && h->plt.offset != (bfd_vma) -1 |
1496 | && elf_hash_table (info)->dynamic_sections_created) | |
1497 | || (r_type == R_VAX_GOT32 | |
1498 | && strcmp (h->root.root.string, | |
1499 | "_GLOBAL_OFFSET_TABLE_") != 0 | |
1500 | && elf_hash_table (info)->dynamic_sections_created | |
1501 | && (! info->shared | |
1502 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1503 | || !h->def_regular)) |
90ace9e9 JT |
1504 | || (info->shared |
1505 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1506 | || !h->def_regular) |
90ace9e9 JT |
1507 | && ((input_section->flags & SEC_ALLOC) != 0 |
1508 | /* DWARF will emit R_VAX_32 relocations in its | |
1509 | sections against symbols defined externally | |
1510 | in shared libraries. We can't do anything | |
1511 | with them here. */ | |
1512 | ||
1513 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1514 | && h->def_dynamic)) |
90ace9e9 JT |
1515 | && (r_type == R_VAX_8 |
1516 | || r_type == R_VAX_16 | |
1517 | || r_type == R_VAX_32 | |
1518 | || r_type == R_VAX_PC8 | |
1519 | || r_type == R_VAX_PC16 | |
560e09e9 NC |
1520 | || r_type == R_VAX_PC32)))) |
1521 | /* In these cases, we don't need the relocation | |
1522 | value. We check specially because in some | |
1523 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1524 | relocation = 0; |
90ace9e9 JT |
1525 | } |
1526 | ||
1527 | switch (r_type) | |
1528 | { | |
1529 | case R_VAX_GOT32: | |
1530 | /* Relocation is to the address of the entry for this symbol | |
1531 | in the global offset table. */ | |
b29635ba | 1532 | if (h == NULL || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1533 | break; |
1534 | ||
1535 | /* Relocation is the offset of the entry for this symbol in | |
1536 | the global offset table. */ | |
1537 | ||
1538 | { | |
1539 | bfd_vma off; | |
1540 | ||
90ace9e9 JT |
1541 | if (sgot == NULL) |
1542 | { | |
1543 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1544 | BFD_ASSERT (sgot != NULL); | |
1545 | } | |
1546 | ||
1547 | BFD_ASSERT (h != NULL); | |
1548 | off = h->got.offset; | |
1549 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1550 | BFD_ASSERT (off < sgot->size); |
90ace9e9 JT |
1551 | |
1552 | if (info->shared | |
1553 | && h->dynindx == -1 | |
f5385ebf | 1554 | && h->def_regular) |
90ace9e9 JT |
1555 | { |
1556 | /* The symbol was forced to be local | |
1557 | because of a version file.. We must initialize | |
1558 | this entry in the global offset table. Since | |
1559 | the offset must always be a multiple of 4, we | |
1560 | use the least significant bit to record whether | |
1561 | we have initialized it already. | |
1562 | ||
1563 | When doing a dynamic link, we create a .rela.got | |
1564 | relocation entry to initialize the value. This | |
1565 | is done in the finish_dynamic_symbol routine. */ | |
1566 | if ((off & 1) != 0) | |
1567 | off &= ~1; | |
1568 | else | |
1569 | { | |
1570 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1571 | sgot->contents + off); | |
1572 | h->got.offset |= 1; | |
1573 | } | |
1574 | } else { | |
1575 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1576 | } | |
1577 | ||
1578 | relocation = sgot->output_offset + off; | |
b29635ba | 1579 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1580 | rel->r_addend = 0; |
1581 | ||
b29635ba JT |
1582 | /* Change the reference to be indirect. */ |
1583 | contents[rel->r_offset - 1] |= 0x10; | |
1584 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1585 | } |
1586 | break; | |
1587 | ||
1588 | case R_VAX_PLT32: | |
1589 | /* Relocation is to the entry for this symbol in the | |
1590 | procedure linkage table. */ | |
1591 | ||
1592 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1593 | without using the procedure linkage table. */ | |
1594 | if (h == NULL) | |
1595 | break; | |
1596 | ||
1597 | if (h->plt.offset == (bfd_vma) -1 | |
1598 | || !elf_hash_table (info)->dynamic_sections_created) | |
1599 | { | |
1600 | /* We didn't make a PLT entry for this symbol. This | |
1601 | happens when statically linking PIC code, or when | |
1602 | using -Bsymbolic. */ | |
1603 | break; | |
1604 | } | |
1605 | ||
1606 | if (splt == NULL) | |
1607 | { | |
1608 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1609 | BFD_ASSERT (splt != NULL); | |
1610 | } | |
1611 | ||
1612 | if (sgotplt == NULL) | |
1613 | { | |
1614 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1615 | BFD_ASSERT (splt != NULL); | |
1616 | } | |
1617 | ||
1618 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1619 | ||
1620 | /* Get the offset into the .got table of the entry that | |
1621 | corresponds to this function. Each .got entry is 4 bytes. | |
1622 | The first two are reserved. */ | |
1623 | got_offset = (plt_index + 3) * 4; | |
1624 | ||
1625 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1626 | of the plt itself. */ |
90ace9e9 JT |
1627 | relocation = (sgotplt->output_section->vma |
1628 | + sgotplt->output_offset | |
1629 | + got_offset); | |
1630 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1631 | if (rel->r_addend == 2) | |
1632 | { | |
1633 | h->plt.offset |= 1; | |
1634 | } | |
1635 | else if (rel->r_addend != 0) | |
1636 | (*_bfd_error_handler) | |
1637 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1638 | bfd_get_filename (input_bfd), rel->r_addend, | |
1639 | h->root.root.string, | |
1640 | bfd_get_section_name (input_bfd, input_section)); | |
1641 | rel->r_addend = 0; | |
1642 | ||
1643 | break; | |
1644 | ||
1645 | case R_VAX_PC8: | |
1646 | case R_VAX_PC16: | |
1647 | case R_VAX_PC32: | |
1648 | if (h == NULL) | |
1649 | break; | |
1650 | /* Fall through. */ | |
1651 | case R_VAX_8: | |
1652 | case R_VAX_16: | |
1653 | case R_VAX_32: | |
1654 | if (info->shared | |
1655 | && r_symndx != 0 | |
1656 | && (input_section->flags & SEC_ALLOC) != 0 | |
1657 | && ((r_type != R_VAX_PC8 | |
1658 | && r_type != R_VAX_PC16 | |
1659 | && r_type != R_VAX_PC32) | |
1660 | || (!info->symbolic | |
f5385ebf | 1661 | || !h->def_regular))) |
90ace9e9 JT |
1662 | { |
1663 | Elf_Internal_Rela outrel; | |
947216bf | 1664 | bfd_byte *loc; |
b34976b6 | 1665 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1666 | |
1667 | /* When generating a shared object, these relocations | |
1668 | are copied into the output file to be resolved at run | |
1669 | time. */ | |
90ace9e9 JT |
1670 | if (sreloc == NULL) |
1671 | { | |
1672 | const char *name; | |
1673 | ||
1674 | name = (bfd_elf_string_from_elf_section | |
1675 | (input_bfd, | |
1676 | elf_elfheader (input_bfd)->e_shstrndx, | |
1677 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1678 | if (name == NULL) | |
b34976b6 | 1679 | return FALSE; |
90ace9e9 JT |
1680 | |
1681 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1682 | && strcmp (bfd_get_section_name (input_bfd, | |
1683 | input_section), | |
1684 | name + 5) == 0); | |
1685 | ||
1686 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1687 | BFD_ASSERT (sreloc != NULL); | |
1688 | } | |
1689 | ||
b34976b6 AM |
1690 | skip = FALSE; |
1691 | relocate = FALSE; | |
90ace9e9 JT |
1692 | |
1693 | outrel.r_offset = | |
1694 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1695 | rel->r_offset); | |
1696 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1697 | skip = TRUE; |
90ace9e9 | 1698 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1699 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1700 | outrel.r_offset += (input_section->output_section->vma |
1701 | + input_section->output_offset); | |
1702 | ||
1703 | if (skip) | |
1704 | memset (&outrel, 0, sizeof outrel); | |
1705 | /* h->dynindx may be -1 if the symbol was marked to | |
1706 | become local. */ | |
1707 | else if (h != NULL | |
1708 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1709 | || !h->def_regular)) |
90ace9e9 JT |
1710 | { |
1711 | BFD_ASSERT (h->dynindx != -1); | |
1712 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1713 | outrel.r_addend = relocation + rel->r_addend; | |
1714 | } | |
1715 | else | |
1716 | { | |
1717 | if (r_type == R_VAX_32) | |
1718 | { | |
b34976b6 | 1719 | relocate = TRUE; |
90ace9e9 JT |
1720 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1721 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1722 | &contents[rel->r_offset]) == 0); | |
1723 | outrel.r_addend = relocation + rel->r_addend; | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | long indx; | |
1728 | ||
8517fae7 | 1729 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1730 | indx = 0; |
1731 | else if (sec == NULL || sec->owner == NULL) | |
1732 | { | |
1733 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1734 | return FALSE; |
90ace9e9 JT |
1735 | } |
1736 | else | |
1737 | { | |
1738 | asection *osec; | |
1739 | ||
1740 | osec = sec->output_section; | |
1741 | indx = elf_section_data (osec)->dynindx; | |
1742 | BFD_ASSERT (indx > 0); | |
1743 | } | |
1744 | ||
1745 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1746 | outrel.r_addend = relocation + rel->r_addend; | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1751 | ".text") != 0 || |
90ace9e9 JT |
1752 | (info->shared |
1753 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1754 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1755 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1756 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1757 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1758 | { | |
1759 | if (h != NULL) | |
1760 | (*_bfd_error_handler) | |
1761 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1762 | bfd_get_filename (input_bfd), howto->name, | |
1763 | h->root.root.string, | |
1764 | bfd_get_section_name (input_bfd, input_section)); | |
1765 | else | |
1766 | (*_bfd_error_handler) | |
1767 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1768 | bfd_get_filename (input_bfd), howto->name, | |
1769 | outrel.r_addend, | |
1770 | bfd_get_section_name (input_bfd, input_section)); | |
1771 | } | |
947216bf AM |
1772 | loc = sreloc->contents; |
1773 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1774 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1775 | |
1776 | /* This reloc will be computed at runtime, so there's no | |
1777 | need to do anything now, except for R_VAX_32 | |
1778 | relocations that have been turned into | |
1779 | R_VAX_RELATIVE. */ | |
1780 | if (!relocate) | |
1781 | continue; | |
1782 | } | |
1783 | ||
1784 | break; | |
1785 | ||
1786 | case R_VAX_GNU_VTINHERIT: | |
1787 | case R_VAX_GNU_VTENTRY: | |
1788 | /* These are no-ops in the end. */ | |
1789 | continue; | |
1790 | ||
1791 | default: | |
1792 | break; | |
1793 | } | |
1794 | ||
b34976b6 | 1795 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1796 | So subtract the difference from the relocation amount since we can't |
1797 | add it to the offset. */ | |
90ace9e9 | 1798 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1799 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1800 | |
1801 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1802 | contents, rel->r_offset, | |
1803 | relocation, rel->r_addend); | |
1804 | ||
1805 | if (r != bfd_reloc_ok) | |
1806 | { | |
1807 | switch (r) | |
1808 | { | |
1809 | default: | |
1810 | case bfd_reloc_outofrange: | |
1811 | abort (); | |
1812 | case bfd_reloc_overflow: | |
1813 | { | |
1814 | const char *name; | |
1815 | ||
1816 | if (h != NULL) | |
dfeffb9f | 1817 | name = NULL; |
90ace9e9 JT |
1818 | else |
1819 | { | |
1820 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1821 | symtab_hdr->sh_link, | |
1822 | sym->st_name); | |
1823 | if (name == NULL) | |
b34976b6 | 1824 | return FALSE; |
90ace9e9 JT |
1825 | if (*name == '\0') |
1826 | name = bfd_section_name (input_bfd, sec); | |
1827 | } | |
1828 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1829 | (info, (h ? &h->root : NULL), name, howto->name, |
1830 | (bfd_vma) 0, input_bfd, input_section, | |
1831 | rel->r_offset))) | |
b34976b6 | 1832 | return FALSE; |
90ace9e9 JT |
1833 | } |
1834 | break; | |
1835 | } | |
1836 | } | |
1837 | } | |
1838 | ||
b34976b6 | 1839 | return TRUE; |
90ace9e9 JT |
1840 | } |
1841 | ||
1842 | /* Finish up dynamic symbol handling. We set the contents of various | |
1843 | dynamic sections here. */ | |
1844 | ||
b34976b6 | 1845 | static bfd_boolean |
90ace9e9 JT |
1846 | elf_vax_finish_dynamic_symbol (output_bfd, info, h, sym) |
1847 | bfd *output_bfd; | |
1848 | struct bfd_link_info *info; | |
1849 | struct elf_link_hash_entry *h; | |
1850 | Elf_Internal_Sym *sym; | |
1851 | { | |
1852 | bfd *dynobj; | |
1853 | ||
1854 | dynobj = elf_hash_table (info)->dynobj; | |
1855 | ||
1856 | if (h->plt.offset != (bfd_vma) -1) | |
1857 | { | |
1858 | asection *splt; | |
1859 | asection *sgot; | |
1860 | asection *srela; | |
1861 | bfd_vma plt_index; | |
1862 | bfd_vma got_offset; | |
1863 | bfd_vma addend; | |
1864 | Elf_Internal_Rela rela; | |
947216bf | 1865 | bfd_byte *loc; |
90ace9e9 JT |
1866 | |
1867 | /* This symbol has an entry in the procedure linkage table. Set | |
1868 | it up. */ | |
90ace9e9 JT |
1869 | BFD_ASSERT (h->dynindx != -1); |
1870 | ||
1871 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1872 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1873 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1874 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1875 | ||
1876 | addend = 2 * (h->plt.offset & 1); | |
1877 | h->plt.offset &= ~1; | |
1878 | ||
1879 | /* Get the index in the procedure linkage table which | |
1880 | corresponds to this symbol. This is the index of this symbol | |
1881 | in all the symbols for which we are making plt entries. The | |
1882 | first entry in the procedure linkage table is reserved. */ | |
1883 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1884 | ||
1885 | /* Get the offset into the .got table of the entry that | |
1886 | corresponds to this function. Each .got entry is 4 bytes. | |
1887 | The first two are reserved. */ | |
1888 | got_offset = (plt_index + 3) * 4; | |
1889 | ||
1890 | /* Fill in the entry in the procedure linkage table. */ | |
1891 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1892 | PLT_ENTRY_SIZE); | |
1893 | ||
1894 | /* The offset is relative to the first extension word. */ | |
1895 | bfd_put_32 (output_bfd, | |
1896 | -(h->plt.offset + 8), | |
1897 | splt->contents + h->plt.offset + 4); | |
1898 | ||
1899 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1900 | splt->contents + h->plt.offset + 8); | |
1901 | ||
1902 | /* Fill in the entry in the global offset table. */ | |
1903 | bfd_put_32 (output_bfd, | |
1904 | (splt->output_section->vma | |
1905 | + splt->output_offset | |
1906 | + h->plt.offset) + addend, | |
1907 | sgot->contents + got_offset); | |
1908 | ||
1909 | /* Fill in the entry in the .rela.plt section. */ | |
1910 | rela.r_offset = (sgot->output_section->vma | |
1911 | + sgot->output_offset | |
1912 | + got_offset); | |
1913 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1914 | rela.r_addend = addend; | |
947216bf AM |
1915 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1916 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1917 | |
f5385ebf | 1918 | if (!h->def_regular) |
90ace9e9 JT |
1919 | { |
1920 | /* Mark the symbol as undefined, rather than as defined in | |
1921 | the .plt section. Leave the value alone. */ | |
1922 | sym->st_shndx = SHN_UNDEF; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | if (h->got.offset != (bfd_vma) -1) | |
1927 | { | |
1928 | asection *sgot; | |
1929 | asection *srela; | |
1930 | Elf_Internal_Rela rela; | |
947216bf | 1931 | bfd_byte *loc; |
90ace9e9 JT |
1932 | |
1933 | /* This symbol has an entry in the global offset table. Set it | |
1934 | up. */ | |
90ace9e9 JT |
1935 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1936 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1937 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1938 | ||
1939 | rela.r_offset = (sgot->output_section->vma | |
1940 | + sgot->output_offset | |
1941 | + (h->got.offset &~ 1)); | |
1942 | ||
1943 | /* If the symbol was forced to be local because of a version file | |
1944 | locally we just want to emit a RELATIVE reloc. The entry in | |
1945 | the global offset table will already have been initialized in | |
1946 | the relocate_section function. */ | |
1947 | if (info->shared | |
1948 | && h->dynindx == -1 | |
f5385ebf | 1949 | && h->def_regular) |
90ace9e9 JT |
1950 | { |
1951 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1952 | } | |
1953 | else | |
1954 | { | |
1955 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1956 | } | |
1957 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1958 | (sgot->contents | |
1959 | + (h->got.offset & ~1))); | |
1960 | ||
947216bf AM |
1961 | loc = srela->contents; |
1962 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1963 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1964 | } |
1965 | ||
f5385ebf | 1966 | if (h->needs_copy) |
90ace9e9 JT |
1967 | { |
1968 | asection *s; | |
1969 | Elf_Internal_Rela rela; | |
947216bf | 1970 | bfd_byte *loc; |
90ace9e9 JT |
1971 | |
1972 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1973 | BFD_ASSERT (h->dynindx != -1 |
1974 | && (h->root.type == bfd_link_hash_defined | |
1975 | || h->root.type == bfd_link_hash_defweak)); | |
1976 | ||
1977 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1978 | ".rela.bss"); | |
1979 | BFD_ASSERT (s != NULL); | |
1980 | ||
1981 | rela.r_offset = (h->root.u.def.value | |
1982 | + h->root.u.def.section->output_section->vma | |
1983 | + h->root.u.def.section->output_offset); | |
1984 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1985 | rela.r_addend = 0; | |
947216bf AM |
1986 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1987 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1988 | } |
1989 | ||
1990 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1991 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1992 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1993 | sym->st_shndx = SHN_ABS; | |
1994 | ||
b34976b6 | 1995 | return TRUE; |
90ace9e9 JT |
1996 | } |
1997 | ||
1998 | /* Finish up the dynamic sections. */ | |
1999 | ||
b34976b6 | 2000 | static bfd_boolean |
90ace9e9 JT |
2001 | elf_vax_finish_dynamic_sections (output_bfd, info) |
2002 | bfd *output_bfd; | |
2003 | struct bfd_link_info *info; | |
2004 | { | |
2005 | bfd *dynobj; | |
2006 | asection *sgot; | |
2007 | asection *sdyn; | |
2008 | ||
2009 | dynobj = elf_hash_table (info)->dynobj; | |
2010 | ||
2011 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2012 | BFD_ASSERT (sgot != NULL); | |
2013 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2014 | ||
2015 | if (elf_hash_table (info)->dynamic_sections_created) | |
2016 | { | |
2017 | asection *splt; | |
2018 | Elf32_External_Dyn *dyncon, *dynconend; | |
2019 | ||
2020 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2021 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2022 | ||
2023 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2024 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
2025 | for (; dyncon < dynconend; dyncon++) |
2026 | { | |
2027 | Elf_Internal_Dyn dyn; | |
2028 | const char *name; | |
2029 | asection *s; | |
2030 | ||
2031 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2032 | ||
2033 | switch (dyn.d_tag) | |
2034 | { | |
2035 | default: | |
2036 | break; | |
2037 | ||
2038 | case DT_PLTGOT: | |
2039 | name = ".got"; | |
2040 | goto get_vma; | |
2041 | case DT_JMPREL: | |
2042 | name = ".rela.plt"; | |
2043 | get_vma: | |
2044 | s = bfd_get_section_by_name (output_bfd, name); | |
2045 | BFD_ASSERT (s != NULL); | |
2046 | dyn.d_un.d_ptr = s->vma; | |
2047 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2048 | break; | |
2049 | ||
2050 | case DT_PLTRELSZ: | |
2051 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2052 | BFD_ASSERT (s != NULL); | |
eea6121a | 2053 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2054 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2055 | break; | |
2056 | ||
2057 | case DT_RELASZ: | |
2058 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2059 | not be included in the overall relocs (DT_RELA). | |
2060 | Therefore, we override the DT_RELASZ entry here to | |
2061 | make it not include the JMPREL relocs. Since the | |
2062 | linker script arranges for .rela.plt to follow all | |
2063 | other relocation sections, we don't have to worry | |
2064 | about changing the DT_RELA entry. */ | |
2065 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2066 | if (s != NULL) | |
eea6121a | 2067 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2068 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2069 | break; | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2074 | if (splt->size > 0) |
90ace9e9 JT |
2075 | { |
2076 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2077 | bfd_put_32 (output_bfd, | |
2078 | (sgot->output_section->vma | |
2079 | + sgot->output_offset + 4 | |
2080 | - (splt->output_section->vma + 6)), | |
2081 | splt->contents + 2); | |
2082 | bfd_put_32 (output_bfd, | |
2083 | (sgot->output_section->vma | |
2084 | + sgot->output_offset + 8 | |
2085 | - (splt->output_section->vma + 12)), | |
2086 | splt->contents + 8); | |
cedb70c5 | 2087 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2088 | = PLT_ENTRY_SIZE; |
2089 | } | |
2090 | } | |
2091 | ||
2092 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2093 | if (sgot->size > 0) |
90ace9e9 JT |
2094 | { |
2095 | if (sdyn == NULL) | |
2096 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2097 | else | |
2098 | bfd_put_32 (output_bfd, | |
2099 | sdyn->output_section->vma + sdyn->output_offset, | |
2100 | sgot->contents); | |
2101 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2102 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2103 | } | |
2104 | ||
2105 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2106 | ||
b34976b6 | 2107 | return TRUE; |
90ace9e9 JT |
2108 | } |
2109 | ||
2110 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec | |
2111 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2112 | #define ELF_MACHINE_CODE EM_VAX | |
2113 | #define ELF_MAXPAGESIZE 0x1000 | |
2114 | ||
2115 | #define elf_backend_create_dynamic_sections \ | |
2116 | _bfd_elf_create_dynamic_sections | |
2117 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2118 | elf_vax_link_hash_table_create | |
c152c796 | 2119 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2120 | |
2121 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2122 | #define elf_backend_adjust_dynamic_symbol \ | |
2123 | elf_vax_adjust_dynamic_symbol | |
2124 | #define elf_backend_size_dynamic_sections \ | |
2125 | elf_vax_size_dynamic_sections | |
2126 | #define elf_backend_relocate_section elf_vax_relocate_section | |
2127 | #define elf_backend_finish_dynamic_symbol \ | |
2128 | elf_vax_finish_dynamic_symbol | |
2129 | #define elf_backend_finish_dynamic_sections \ | |
2130 | elf_vax_finish_dynamic_sections | |
2131 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook | |
2132 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2133 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2134 | elf32_vax_merge_private_bfd_data | |
2135 | #define bfd_elf32_bfd_set_private_flags \ | |
2136 | elf32_vax_set_private_flags | |
2137 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2138 | elf32_vax_print_private_bfd_data | |
2139 | ||
2140 | #define elf_backend_can_gc_sections 1 | |
2141 | #define elf_backend_want_got_plt 1 | |
2142 | #define elf_backend_plt_readonly 1 | |
2143 | #define elf_backend_want_plt_sym 0 | |
2144 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2145 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2146 | |
2147 | #include "elf32-target.h" |