Commit | Line | Data |
---|---|---|
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 | ||
685 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
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 | |
709 | || (h->elf_link_hash_flags | |
710 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
711 | { | |
712 | if (h != NULL) | |
713 | { | |
714 | /* Make sure a plt entry is created for this symbol if | |
715 | it turns out to be a function defined by a dynamic | |
716 | object. */ | |
717 | if (h->plt.refcount == -1) | |
718 | h->plt.refcount = 1; | |
719 | else | |
720 | h->plt.refcount++; | |
721 | } | |
722 | break; | |
723 | } | |
724 | /* Fall through. */ | |
725 | case R_VAX_8: | |
726 | case R_VAX_16: | |
727 | case R_VAX_32: | |
728 | if (h != NULL) | |
729 | { | |
730 | /* Make sure a plt entry is created for this symbol if it | |
731 | turns out to be a function defined by a dynamic object. */ | |
732 | if (h->plt.refcount == -1) | |
733 | h->plt.refcount = 1; | |
734 | else | |
735 | h->plt.refcount++; | |
736 | } | |
737 | ||
738 | /* If we are creating a shared library, we need to copy the | |
739 | reloc into the shared library. */ | |
740 | if (info->shared | |
741 | && (sec->flags & SEC_ALLOC) != 0) | |
742 | { | |
743 | /* When creating a shared object, we must copy these | |
744 | reloc types into the output file. We create a reloc | |
745 | section in dynobj and make room for this reloc. */ | |
746 | if (sreloc == NULL) | |
747 | { | |
748 | const char *name; | |
749 | ||
750 | name = (bfd_elf_string_from_elf_section | |
751 | (abfd, | |
752 | elf_elfheader (abfd)->e_shstrndx, | |
753 | elf_section_data (sec)->rel_hdr.sh_name)); | |
754 | if (name == NULL) | |
b34976b6 | 755 | return FALSE; |
90ace9e9 JT |
756 | |
757 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
758 | && strcmp (bfd_get_section_name (abfd, sec), | |
759 | name + 5) == 0); | |
760 | ||
761 | sreloc = bfd_get_section_by_name (dynobj, name); | |
762 | if (sreloc == NULL) | |
763 | { | |
764 | sreloc = bfd_make_section (dynobj, name); | |
765 | if (sreloc == NULL | |
766 | || !bfd_set_section_flags (dynobj, sreloc, | |
767 | (SEC_ALLOC | |
768 | | SEC_LOAD | |
769 | | SEC_HAS_CONTENTS | |
770 | | SEC_IN_MEMORY | |
771 | | SEC_LINKER_CREATED | |
772 | | SEC_READONLY)) | |
773 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 774 | return FALSE; |
90ace9e9 JT |
775 | } |
776 | if (sec->flags & SEC_READONLY) | |
777 | info->flags |= DF_TEXTREL; | |
778 | } | |
779 | ||
eea6121a | 780 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
781 | |
782 | /* If we are linking with -Bsymbolic, we count the number of | |
783 | PC relative relocations we have entered for this symbol, | |
784 | so that we can discard them again if the symbol is later | |
785 | defined by a regular object. Note that this function is | |
19852a2a | 786 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
787 | which means that h is really a pointer to an |
788 | elf_vax_link_hash_entry. */ | |
789 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
790 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 | |
791 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
792 | && info->symbolic) | |
793 | { | |
794 | struct elf_vax_link_hash_entry *eh; | |
795 | struct elf_vax_pcrel_relocs_copied *p; | |
796 | ||
797 | eh = (struct elf_vax_link_hash_entry *) h; | |
798 | ||
799 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
800 | if (p->section == sreloc) | |
801 | break; | |
802 | ||
803 | if (p == NULL) | |
804 | { | |
805 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
806 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
807 | if (p == NULL) | |
b34976b6 | 808 | return FALSE; |
90ace9e9 JT |
809 | p->next = eh->pcrel_relocs_copied; |
810 | eh->pcrel_relocs_copied = p; | |
811 | p->section = sreloc; | |
812 | p->count = 0; | |
813 | } | |
814 | ||
815 | ++p->count; | |
816 | } | |
817 | } | |
818 | ||
819 | break; | |
820 | ||
821 | /* This relocation describes the C++ object vtable hierarchy. | |
822 | Reconstruct it for later use during GC. */ | |
823 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 824 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 825 | return FALSE; |
90ace9e9 JT |
826 | break; |
827 | ||
828 | /* This relocation describes which C++ vtable entries are actually | |
829 | used. Record for later use during GC. */ | |
830 | case R_VAX_GNU_VTENTRY: | |
c152c796 | 831 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 832 | return FALSE; |
90ace9e9 JT |
833 | break; |
834 | ||
835 | default: | |
836 | break; | |
837 | } | |
838 | } | |
839 | ||
b34976b6 | 840 | return TRUE; |
90ace9e9 JT |
841 | } |
842 | ||
843 | /* Return the section that should be marked against GC for a given | |
844 | relocation. */ | |
845 | ||
846 | static asection * | |
1e2f5b6e AM |
847 | elf_vax_gc_mark_hook (sec, info, rel, h, sym) |
848 | asection *sec; | |
90ace9e9 JT |
849 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
850 | Elf_Internal_Rela *rel; | |
851 | struct elf_link_hash_entry *h; | |
852 | Elf_Internal_Sym *sym; | |
853 | { | |
854 | if (h != NULL) | |
855 | { | |
856 | switch (ELF32_R_TYPE (rel->r_info)) | |
857 | { | |
858 | case R_VAX_GNU_VTINHERIT: | |
859 | case R_VAX_GNU_VTENTRY: | |
860 | break; | |
861 | ||
862 | default: | |
863 | switch (h->root.type) | |
864 | { | |
865 | default: | |
866 | break; | |
867 | ||
868 | case bfd_link_hash_defined: | |
869 | case bfd_link_hash_defweak: | |
870 | return h->root.u.def.section; | |
871 | ||
872 | case bfd_link_hash_common: | |
873 | return h->root.u.c.p->section; | |
874 | } | |
875 | } | |
876 | } | |
877 | else | |
1e2f5b6e | 878 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
90ace9e9 JT |
879 | |
880 | return NULL; | |
881 | } | |
882 | ||
883 | /* Update the got entry reference counts for the section being removed. */ | |
884 | ||
b34976b6 | 885 | static bfd_boolean |
90ace9e9 JT |
886 | elf_vax_gc_sweep_hook (abfd, info, sec, relocs) |
887 | bfd *abfd; | |
888 | struct bfd_link_info *info; | |
889 | asection *sec; | |
890 | const Elf_Internal_Rela *relocs; | |
891 | { | |
892 | Elf_Internal_Shdr *symtab_hdr; | |
893 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 894 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 895 | bfd *dynobj; |
90ace9e9 | 896 | |
90ace9e9 JT |
897 | dynobj = elf_hash_table (info)->dynobj; |
898 | if (dynobj == NULL) | |
b34976b6 | 899 | return TRUE; |
90ace9e9 | 900 | |
babfd660 KH |
901 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
902 | sym_hashes = elf_sym_hashes (abfd); | |
903 | ||
90ace9e9 JT |
904 | relend = relocs + sec->reloc_count; |
905 | for (rel = relocs; rel < relend; rel++) | |
906 | { | |
babfd660 KH |
907 | unsigned long r_symndx; |
908 | struct elf_link_hash_entry *h; | |
909 | ||
90ace9e9 JT |
910 | switch (ELF32_R_TYPE (rel->r_info)) |
911 | { | |
912 | case R_VAX_GOT32: | |
913 | r_symndx = ELF32_R_SYM (rel->r_info); | |
914 | if (r_symndx >= symtab_hdr->sh_info) | |
915 | { | |
916 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
917 | if (h->got.refcount > 0) | |
b29635ba | 918 | --h->got.refcount; |
90ace9e9 JT |
919 | } |
920 | break; | |
921 | ||
922 | case R_VAX_PLT32: | |
923 | case R_VAX_PC8: | |
924 | case R_VAX_PC16: | |
925 | case R_VAX_PC32: | |
926 | case R_VAX_8: | |
927 | case R_VAX_16: | |
928 | case R_VAX_32: | |
929 | r_symndx = ELF32_R_SYM (rel->r_info); | |
930 | if (r_symndx >= symtab_hdr->sh_info) | |
931 | { | |
932 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
933 | if (h->plt.refcount > 0) | |
934 | --h->plt.refcount; | |
935 | } | |
936 | break; | |
937 | ||
938 | default: | |
939 | break; | |
940 | } | |
941 | } | |
942 | ||
b34976b6 | 943 | return TRUE; |
90ace9e9 JT |
944 | } |
945 | ||
946 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
947 | regular object. The current definition is in some section of the | |
948 | dynamic object, but we're not including those sections. We have to | |
949 | change the definition to something the rest of the link can | |
950 | understand. */ | |
951 | ||
b34976b6 | 952 | static bfd_boolean |
90ace9e9 JT |
953 | elf_vax_adjust_dynamic_symbol (info, h) |
954 | struct bfd_link_info *info; | |
955 | struct elf_link_hash_entry *h; | |
956 | { | |
957 | bfd *dynobj; | |
958 | asection *s; | |
959 | unsigned int power_of_two; | |
960 | ||
961 | dynobj = elf_hash_table (info)->dynobj; | |
962 | ||
963 | /* Make sure we know what is going on here. */ | |
964 | BFD_ASSERT (dynobj != NULL | |
965 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
966 | || h->weakdef != NULL | |
967 | || ((h->elf_link_hash_flags | |
968 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
969 | && (h->elf_link_hash_flags | |
970 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
971 | && (h->elf_link_hash_flags | |
972 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
973 | ||
974 | /* If this is a function, put it in the procedure linkage table. We | |
975 | will fill in the contents of the procedure linkage table later, | |
976 | when we know the address of the .got section. */ | |
977 | if (h->type == STT_FUNC | |
978 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
979 | { | |
980 | if (! info->shared | |
981 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
982 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 | |
983 | /* We must always create the plt entry if it was referenced | |
984 | by a PLTxxO relocation. In this case we already recorded | |
985 | it as a dynamic symbol. */ | |
986 | && h->dynindx == -1) | |
987 | { | |
988 | /* This case can occur if we saw a PLTxx reloc in an input | |
989 | file, but the symbol was never referred to by a dynamic | |
990 | object. In such a case, we don't actually need to build | |
991 | a procedure linkage table, and we can just do a PCxx | |
992 | reloc instead. */ | |
993 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
994 | h->plt.offset = (bfd_vma) -1; | |
b34976b6 | 995 | return TRUE; |
90ace9e9 JT |
996 | } |
997 | ||
998 | /* GC may have rendered this entry unused. */ | |
999 | if (h->plt.refcount <= 0) | |
1000 | { | |
1001 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1002 | h->plt.offset = (bfd_vma) -1; | |
b34976b6 | 1003 | return TRUE; |
90ace9e9 JT |
1004 | } |
1005 | ||
1006 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1007 | if (h->dynindx == -1) | |
1008 | { | |
c152c796 | 1009 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1010 | return FALSE; |
90ace9e9 JT |
1011 | } |
1012 | ||
1013 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1014 | BFD_ASSERT (s != NULL); | |
1015 | ||
1016 | /* If this is the first .plt entry, make room for the special | |
1017 | first entry. */ | |
eea6121a | 1018 | if (s->size == 0) |
90ace9e9 | 1019 | { |
eea6121a | 1020 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1021 | } |
1022 | ||
1023 | /* If this symbol is not defined in a regular file, and we are | |
1024 | not generating a shared library, then set the symbol to this | |
1025 | location in the .plt. This is required to make function | |
1026 | pointers compare as equal between the normal executable and | |
1027 | the shared library. */ | |
1028 | if (!info->shared | |
1029 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1030 | { | |
1031 | h->root.u.def.section = s; | |
eea6121a | 1032 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1033 | } |
1034 | ||
eea6121a | 1035 | h->plt.offset = s->size; |
90ace9e9 JT |
1036 | |
1037 | /* Make room for this entry. */ | |
eea6121a | 1038 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1039 | |
1040 | /* We also need to make an entry in the .got.plt section, which | |
1041 | will be placed in the .got section by the linker script. */ | |
1042 | ||
1043 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1044 | BFD_ASSERT (s != NULL); | |
eea6121a | 1045 | s->size += 4; |
90ace9e9 JT |
1046 | |
1047 | /* We also need to make an entry in the .rela.plt section. */ | |
1048 | ||
1049 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1050 | BFD_ASSERT (s != NULL); | |
eea6121a | 1051 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1052 | |
b34976b6 | 1053 | return TRUE; |
90ace9e9 JT |
1054 | } |
1055 | ||
1056 | /* Reinitialize the plt offset now that it is not used as a reference | |
1057 | count any more. */ | |
1058 | h->plt.offset = (bfd_vma) -1; | |
1059 | ||
1060 | /* If this is a weak symbol, and there is a real definition, the | |
1061 | processor independent code will have arranged for us to see the | |
1062 | real definition first, and we can just use the same value. */ | |
1063 | if (h->weakdef != NULL) | |
1064 | { | |
1065 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1066 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1067 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1068 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 1069 | return TRUE; |
90ace9e9 JT |
1070 | } |
1071 | ||
1072 | /* This is a reference to a symbol defined by a dynamic object which | |
1073 | is not a function. */ | |
1074 | ||
1075 | /* If we are creating a shared library, we must presume that the | |
1076 | only references to the symbol are via the global offset table. | |
1077 | For such cases we need not do anything here; the relocations will | |
1078 | be handled correctly by relocate_section. */ | |
1079 | if (info->shared) | |
b34976b6 | 1080 | return TRUE; |
90ace9e9 JT |
1081 | |
1082 | /* We must allocate the symbol in our .dynbss section, which will | |
1083 | become part of the .bss section of the executable. There will be | |
1084 | an entry for this symbol in the .dynsym section. The dynamic | |
1085 | object will contain position independent code, so all references | |
1086 | from the dynamic object to this symbol will go through the global | |
1087 | offset table. The dynamic linker will use the .dynsym entry to | |
1088 | determine the address it must put in the global offset table, so | |
1089 | both the dynamic object and the regular object will refer to the | |
1090 | same memory location for the variable. */ | |
1091 | ||
1092 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1093 | BFD_ASSERT (s != NULL); | |
1094 | ||
1095 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1096 | copy the initial value out of the dynamic object and into the | |
1097 | runtime process image. We need to remember the offset into the | |
1098 | .rela.bss section we are going to use. */ | |
1099 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1100 | { | |
1101 | asection *srel; | |
1102 | ||
1103 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1104 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1105 | srel->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
1106 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1107 | } | |
1108 | ||
1109 | /* We need to figure out the alignment required for this symbol. I | |
1110 | have no idea how ELF linkers handle this. */ | |
1111 | power_of_two = bfd_log2 (h->size); | |
1112 | if (power_of_two > 3) | |
1113 | power_of_two = 3; | |
1114 | ||
1115 | /* Apply the required alignment. */ | |
eea6121a | 1116 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
90ace9e9 JT |
1117 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1118 | { | |
1119 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1120 | return FALSE; |
90ace9e9 JT |
1121 | } |
1122 | ||
1123 | /* Define the symbol as being at this point in the section. */ | |
1124 | h->root.u.def.section = s; | |
eea6121a | 1125 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1126 | |
1127 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1128 | s->size += h->size; |
90ace9e9 | 1129 | |
b34976b6 | 1130 | return TRUE; |
90ace9e9 JT |
1131 | } |
1132 | ||
1133 | /* Set the sizes of the dynamic sections. */ | |
1134 | ||
b34976b6 | 1135 | static bfd_boolean |
90ace9e9 JT |
1136 | elf_vax_size_dynamic_sections (output_bfd, info) |
1137 | bfd *output_bfd; | |
1138 | struct bfd_link_info *info; | |
1139 | { | |
1140 | bfd *dynobj; | |
1141 | asection *s; | |
b34976b6 AM |
1142 | bfd_boolean plt; |
1143 | bfd_boolean relocs; | |
1144 | bfd_boolean reltext; | |
90ace9e9 JT |
1145 | |
1146 | dynobj = elf_hash_table (info)->dynobj; | |
1147 | BFD_ASSERT (dynobj != NULL); | |
1148 | ||
1149 | if (elf_hash_table (info)->dynamic_sections_created) | |
1150 | { | |
1151 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1152 | if (info->executable) |
90ace9e9 JT |
1153 | { |
1154 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1155 | BFD_ASSERT (s != NULL); | |
eea6121a | 1156 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1157 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1158 | } | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | /* We may have created entries in the .rela.got and .got sections. | |
1163 | However, if we are not creating the dynamic sections, we will | |
1164 | not actually use these entries. Reset the size of .rela.got | |
1165 | and .got, which will cause it to get stripped from the output | |
1166 | file below. */ | |
1167 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1168 | if (s != NULL) | |
eea6121a | 1169 | s->size = 0; |
90ace9e9 JT |
1170 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1171 | if (s != NULL) | |
eea6121a | 1172 | s->size = 0; |
90ace9e9 JT |
1173 | s = bfd_get_section_by_name (dynobj, ".got"); |
1174 | if (s != NULL) | |
eea6121a | 1175 | s->size = 0; |
90ace9e9 JT |
1176 | } |
1177 | ||
1178 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1179 | relative relocs against symbols defined in a regular object. We | |
1180 | allocated space for them in the check_relocs routine, but we will not | |
1181 | fill them in in the relocate_section routine. */ | |
1182 | if (info->shared && info->symbolic) | |
1183 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba JT |
1184 | elf_vax_discard_copies, |
1185 | (PTR) NULL); | |
1186 | ||
b34976b6 | 1187 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1188 | discard all the got entries we've recorded. Otherwise, we need to |
1189 | instantiate (allocate space for them). */ | |
1190 | elf_link_hash_traverse (elf_hash_table (info), | |
1191 | elf_vax_instantiate_got_entries, | |
1192 | (PTR) info); | |
90ace9e9 JT |
1193 | |
1194 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1195 | determined the sizes of the various dynamic sections. Allocate | |
1196 | memory for them. */ | |
b34976b6 AM |
1197 | plt = FALSE; |
1198 | relocs = FALSE; | |
1199 | reltext = FALSE; | |
90ace9e9 JT |
1200 | for (s = dynobj->sections; s != NULL; s = s->next) |
1201 | { | |
1202 | const char *name; | |
b34976b6 | 1203 | bfd_boolean strip; |
90ace9e9 JT |
1204 | |
1205 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1206 | continue; | |
1207 | ||
1208 | /* It's OK to base decisions on the section name, because none | |
1209 | of the dynobj section names depend upon the input files. */ | |
1210 | name = bfd_get_section_name (dynobj, s); | |
1211 | ||
b34976b6 | 1212 | strip = FALSE; |
90ace9e9 JT |
1213 | |
1214 | if (strcmp (name, ".plt") == 0) | |
1215 | { | |
eea6121a | 1216 | if (s->size == 0) |
90ace9e9 JT |
1217 | { |
1218 | /* Strip this section if we don't need it; see the | |
1219 | comment below. */ | |
b34976b6 | 1220 | strip = TRUE; |
90ace9e9 JT |
1221 | } |
1222 | else | |
1223 | { | |
1224 | /* Remember whether there is a PLT. */ | |
b34976b6 | 1225 | plt = TRUE; |
90ace9e9 JT |
1226 | } |
1227 | } | |
1228 | else if (strncmp (name, ".rela", 5) == 0) | |
1229 | { | |
eea6121a | 1230 | if (s->size == 0) |
90ace9e9 JT |
1231 | { |
1232 | /* If we don't need this section, strip it from the | |
1233 | output file. This is mostly to handle .rela.bss and | |
1234 | .rela.plt. We must create both sections in | |
1235 | create_dynamic_sections, because they must be created | |
1236 | before the linker maps input sections to output | |
1237 | sections. The linker does that before | |
1238 | adjust_dynamic_symbol is called, and it is that | |
1239 | function which decides whether anything needs to go | |
1240 | into these sections. */ | |
b34976b6 | 1241 | strip = TRUE; |
90ace9e9 JT |
1242 | } |
1243 | else | |
1244 | { | |
1245 | asection *target; | |
1246 | ||
1247 | /* Remember whether there are any reloc sections other | |
1248 | than .rela.plt. */ | |
1249 | if (strcmp (name, ".rela.plt") != 0) | |
1250 | { | |
1251 | const char *outname; | |
1252 | ||
b34976b6 | 1253 | relocs = TRUE; |
90ace9e9 JT |
1254 | |
1255 | /* If this relocation section applies to a read only | |
1256 | section, then we probably need a DT_TEXTREL | |
1257 | entry. .rela.plt is actually associated with | |
1258 | .got.plt, which is never readonly. */ | |
1259 | outname = bfd_get_section_name (output_bfd, | |
1260 | s->output_section); | |
1261 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1262 | if (target != NULL | |
1263 | && (target->flags & SEC_READONLY) != 0 | |
1264 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1265 | reltext = TRUE; |
90ace9e9 JT |
1266 | } |
1267 | ||
1268 | /* We use the reloc_count field as a counter if we need | |
1269 | to copy relocs into the output file. */ | |
1270 | s->reloc_count = 0; | |
1271 | } | |
1272 | } | |
624f0b25 | 1273 | else if (strncmp (name, ".got", 4) != 0) |
90ace9e9 JT |
1274 | { |
1275 | /* It's not one of our sections, so don't allocate space. */ | |
1276 | continue; | |
1277 | } | |
1278 | ||
1279 | if (strip) | |
1280 | { | |
1281 | _bfd_strip_section_from_output (info, s); | |
1282 | continue; | |
1283 | } | |
1284 | ||
1285 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
1286 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
1287 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 1288 | return FALSE; |
90ace9e9 JT |
1289 | } |
1290 | ||
1291 | if (elf_hash_table (info)->dynamic_sections_created) | |
1292 | { | |
1293 | /* Add some entries to the .dynamic section. We fill in the | |
1294 | values later, in elf_vax_finish_dynamic_sections, but we | |
1295 | must add the entries now so that we get the correct size for | |
1296 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1297 | dynamic linker and used by the debugger. */ | |
1298 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1299 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1300 | |
1301 | if (!info->shared) | |
1302 | { | |
1303 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1304 | return FALSE; |
90ace9e9 JT |
1305 | } |
1306 | ||
1307 | if (plt) | |
1308 | { | |
1309 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1310 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1311 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1312 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1313 | return FALSE; |
90ace9e9 JT |
1314 | } |
1315 | ||
1316 | if (relocs) | |
1317 | { | |
1318 | if (!add_dynamic_entry (DT_RELA, 0) | |
1319 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1320 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1321 | return FALSE; |
90ace9e9 JT |
1322 | } |
1323 | ||
1324 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1325 | { | |
1326 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1327 | return FALSE; |
90ace9e9 JT |
1328 | } |
1329 | } | |
1330 | #undef add_dynamic_entry | |
1331 | ||
b34976b6 | 1332 | return TRUE; |
90ace9e9 JT |
1333 | } |
1334 | ||
1335 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1336 | creating a shared object with -Bsymbolic. It discards the space | |
1337 | allocated to copy PC relative relocs against symbols which are defined | |
1338 | in regular objects. We allocated space for them in the check_relocs | |
1339 | routine, but we won't fill them in in the relocate_section routine. */ | |
1340 | ||
b34976b6 | 1341 | static bfd_boolean |
90ace9e9 JT |
1342 | elf_vax_discard_copies (h, ignore) |
1343 | struct elf_vax_link_hash_entry *h; | |
1344 | PTR ignore ATTRIBUTE_UNUSED; | |
1345 | { | |
1346 | struct elf_vax_pcrel_relocs_copied *s; | |
1347 | ||
1348 | if (h->root.root.type == bfd_link_hash_warning) | |
1349 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1350 | ||
1351 | /* We only discard relocs for symbols defined in a regular object. */ | |
1352 | if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
b34976b6 | 1353 | return TRUE; |
90ace9e9 JT |
1354 | |
1355 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1356 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1357 | |
b34976b6 | 1358 | return TRUE; |
90ace9e9 JT |
1359 | } |
1360 | ||
b29635ba JT |
1361 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1362 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1363 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1364 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1365 | creating a shared object or executable, space in the .got and .rela.got | |
1366 | will be reserved for the symbol. */ | |
1367 | ||
b34976b6 | 1368 | static bfd_boolean |
b29635ba JT |
1369 | elf_vax_instantiate_got_entries (h, infoptr) |
1370 | struct elf_link_hash_entry *h; | |
1371 | PTR infoptr; | |
1372 | { | |
1373 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1374 | bfd *dynobj; | |
1375 | asection *sgot; | |
1376 | asection *srelgot; | |
b34976b6 | 1377 | |
b29635ba JT |
1378 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1379 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1380 | return TRUE; |
b29635ba JT |
1381 | |
1382 | dynobj = elf_hash_table (info)->dynobj; | |
1383 | if (dynobj == NULL) | |
b34976b6 | 1384 | return TRUE; |
b29635ba JT |
1385 | |
1386 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1387 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1388 | ||
1389 | if (!elf_hash_table (info)->dynamic_sections_created | |
1390 | || (info->shared && info->symbolic)) | |
1391 | { | |
1392 | h->got.refcount = 0; | |
1393 | h->got.offset = (bfd_vma) -1; | |
1394 | h->plt.refcount = 0; | |
1395 | h->plt.offset = (bfd_vma) -1; | |
1396 | } | |
1397 | else if (h->got.refcount > 0) | |
1398 | { | |
1399 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1400 | if (h->dynindx == -1) | |
1401 | { | |
c152c796 | 1402 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1403 | return FALSE; |
b29635ba JT |
1404 | } |
1405 | ||
1406 | /* Allocate space in the .got and .rela.got sections. */ | |
eea6121a AM |
1407 | sgot->size += 4; |
1408 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1409 | } |
1410 | ||
b34976b6 | 1411 | return TRUE; |
b29635ba JT |
1412 | } |
1413 | ||
90ace9e9 JT |
1414 | /* Relocate an VAX ELF section. */ |
1415 | ||
b34976b6 | 1416 | static bfd_boolean |
90ace9e9 JT |
1417 | elf_vax_relocate_section (output_bfd, info, input_bfd, input_section, |
1418 | contents, relocs, local_syms, local_sections) | |
1419 | bfd *output_bfd; | |
1420 | struct bfd_link_info *info; | |
1421 | bfd *input_bfd; | |
1422 | asection *input_section; | |
1423 | bfd_byte *contents; | |
1424 | Elf_Internal_Rela *relocs; | |
1425 | Elf_Internal_Sym *local_syms; | |
1426 | asection **local_sections; | |
1427 | { | |
1428 | bfd *dynobj; | |
1429 | Elf_Internal_Shdr *symtab_hdr; | |
1430 | struct elf_link_hash_entry **sym_hashes; | |
1431 | bfd_vma *local_got_offsets; | |
1432 | bfd_vma plt_index; | |
1433 | bfd_vma got_offset; | |
1434 | asection *sgot; | |
1435 | asection *splt; | |
1436 | asection *sgotplt; | |
1437 | asection *sreloc; | |
1438 | Elf_Internal_Rela *rel; | |
1439 | Elf_Internal_Rela *relend; | |
1440 | ||
1049f94e | 1441 | if (info->relocatable) |
b34976b6 | 1442 | return TRUE; |
f0fe0e16 | 1443 | |
90ace9e9 JT |
1444 | dynobj = elf_hash_table (info)->dynobj; |
1445 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1446 | sym_hashes = elf_sym_hashes (input_bfd); | |
1447 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1448 | ||
1449 | sgot = NULL; | |
1450 | splt = NULL; | |
1451 | sgotplt = NULL; | |
1452 | sreloc = NULL; | |
1453 | ||
1454 | rel = relocs; | |
1455 | relend = relocs + input_section->reloc_count; | |
1456 | for (; rel < relend; rel++) | |
1457 | { | |
1458 | int r_type; | |
1459 | reloc_howto_type *howto; | |
1460 | unsigned long r_symndx; | |
1461 | struct elf_link_hash_entry *h; | |
1462 | Elf_Internal_Sym *sym; | |
1463 | asection *sec; | |
1464 | bfd_vma relocation; | |
1465 | bfd_reloc_status_type r; | |
1466 | ||
1467 | r_type = ELF32_R_TYPE (rel->r_info); | |
1468 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1469 | { | |
1470 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1471 | return FALSE; |
90ace9e9 JT |
1472 | } |
1473 | howto = howto_table + r_type; | |
1474 | ||
90ace9e9 | 1475 | /* This is a final link. */ |
f0fe0e16 | 1476 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1477 | h = NULL; |
1478 | sym = NULL; | |
1479 | sec = NULL; | |
1480 | if (r_symndx < symtab_hdr->sh_info) | |
1481 | { | |
1482 | sym = local_syms + r_symndx; | |
1483 | sec = local_sections[r_symndx]; | |
8517fae7 | 1484 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1485 | } |
1486 | else | |
1487 | { | |
560e09e9 NC |
1488 | bfd_boolean unresolved_reloc; |
1489 | bfd_boolean warned; | |
1490 | ||
b2a8e766 AM |
1491 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1492 | r_symndx, symtab_hdr, sym_hashes, | |
1493 | h, sec, relocation, | |
1494 | unresolved_reloc, warned); | |
560e09e9 NC |
1495 | |
1496 | if ((h->root.type == bfd_link_hash_defined | |
90ace9e9 | 1497 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1498 | && ((r_type == R_VAX_PLT32 |
90ace9e9 JT |
1499 | && h->plt.offset != (bfd_vma) -1 |
1500 | && elf_hash_table (info)->dynamic_sections_created) | |
1501 | || (r_type == R_VAX_GOT32 | |
1502 | && strcmp (h->root.root.string, | |
1503 | "_GLOBAL_OFFSET_TABLE_") != 0 | |
1504 | && elf_hash_table (info)->dynamic_sections_created | |
1505 | && (! info->shared | |
1506 | || (! info->symbolic && h->dynindx != -1) | |
1507 | || (h->elf_link_hash_flags | |
1508 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1509 | || (info->shared | |
1510 | && ((! info->symbolic && h->dynindx != -1) | |
1511 | || (h->elf_link_hash_flags | |
1512 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1513 | && ((input_section->flags & SEC_ALLOC) != 0 | |
1514 | /* DWARF will emit R_VAX_32 relocations in its | |
1515 | sections against symbols defined externally | |
1516 | in shared libraries. We can't do anything | |
1517 | with them here. */ | |
1518 | ||
1519 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
1520 | && (h->elf_link_hash_flags | |
1521 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
1522 | && (r_type == R_VAX_8 | |
1523 | || r_type == R_VAX_16 | |
1524 | || r_type == R_VAX_32 | |
1525 | || r_type == R_VAX_PC8 | |
1526 | || r_type == R_VAX_PC16 | |
560e09e9 NC |
1527 | || r_type == R_VAX_PC32)))) |
1528 | /* In these cases, we don't need the relocation | |
1529 | value. We check specially because in some | |
1530 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1531 | relocation = 0; |
90ace9e9 JT |
1532 | } |
1533 | ||
1534 | switch (r_type) | |
1535 | { | |
1536 | case R_VAX_GOT32: | |
1537 | /* Relocation is to the address of the entry for this symbol | |
1538 | in the global offset table. */ | |
b29635ba | 1539 | if (h == NULL || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1540 | break; |
1541 | ||
1542 | /* Relocation is the offset of the entry for this symbol in | |
1543 | the global offset table. */ | |
1544 | ||
1545 | { | |
1546 | bfd_vma off; | |
1547 | ||
90ace9e9 JT |
1548 | if (sgot == NULL) |
1549 | { | |
1550 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1551 | BFD_ASSERT (sgot != NULL); | |
1552 | } | |
1553 | ||
1554 | BFD_ASSERT (h != NULL); | |
1555 | off = h->got.offset; | |
1556 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1557 | BFD_ASSERT (off < sgot->size); |
90ace9e9 JT |
1558 | |
1559 | if (info->shared | |
1560 | && h->dynindx == -1 | |
1561 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1562 | { | |
1563 | /* The symbol was forced to be local | |
1564 | because of a version file.. We must initialize | |
1565 | this entry in the global offset table. Since | |
1566 | the offset must always be a multiple of 4, we | |
1567 | use the least significant bit to record whether | |
1568 | we have initialized it already. | |
1569 | ||
1570 | When doing a dynamic link, we create a .rela.got | |
1571 | relocation entry to initialize the value. This | |
1572 | is done in the finish_dynamic_symbol routine. */ | |
1573 | if ((off & 1) != 0) | |
1574 | off &= ~1; | |
1575 | else | |
1576 | { | |
1577 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1578 | sgot->contents + off); | |
1579 | h->got.offset |= 1; | |
1580 | } | |
1581 | } else { | |
1582 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1583 | } | |
1584 | ||
1585 | relocation = sgot->output_offset + off; | |
b29635ba | 1586 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1587 | rel->r_addend = 0; |
1588 | ||
b29635ba JT |
1589 | /* Change the reference to be indirect. */ |
1590 | contents[rel->r_offset - 1] |= 0x10; | |
1591 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1592 | } |
1593 | break; | |
1594 | ||
1595 | case R_VAX_PLT32: | |
1596 | /* Relocation is to the entry for this symbol in the | |
1597 | procedure linkage table. */ | |
1598 | ||
1599 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1600 | without using the procedure linkage table. */ | |
1601 | if (h == NULL) | |
1602 | break; | |
1603 | ||
1604 | if (h->plt.offset == (bfd_vma) -1 | |
1605 | || !elf_hash_table (info)->dynamic_sections_created) | |
1606 | { | |
1607 | /* We didn't make a PLT entry for this symbol. This | |
1608 | happens when statically linking PIC code, or when | |
1609 | using -Bsymbolic. */ | |
1610 | break; | |
1611 | } | |
1612 | ||
1613 | if (splt == NULL) | |
1614 | { | |
1615 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1616 | BFD_ASSERT (splt != NULL); | |
1617 | } | |
1618 | ||
1619 | if (sgotplt == NULL) | |
1620 | { | |
1621 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1622 | BFD_ASSERT (splt != NULL); | |
1623 | } | |
1624 | ||
1625 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1626 | ||
1627 | /* Get the offset into the .got table of the entry that | |
1628 | corresponds to this function. Each .got entry is 4 bytes. | |
1629 | The first two are reserved. */ | |
1630 | got_offset = (plt_index + 3) * 4; | |
1631 | ||
1632 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1633 | of the plt itself. */ |
90ace9e9 JT |
1634 | relocation = (sgotplt->output_section->vma |
1635 | + sgotplt->output_offset | |
1636 | + got_offset); | |
1637 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1638 | if (rel->r_addend == 2) | |
1639 | { | |
1640 | h->plt.offset |= 1; | |
1641 | } | |
1642 | else if (rel->r_addend != 0) | |
1643 | (*_bfd_error_handler) | |
1644 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1645 | bfd_get_filename (input_bfd), rel->r_addend, | |
1646 | h->root.root.string, | |
1647 | bfd_get_section_name (input_bfd, input_section)); | |
1648 | rel->r_addend = 0; | |
1649 | ||
1650 | break; | |
1651 | ||
1652 | case R_VAX_PC8: | |
1653 | case R_VAX_PC16: | |
1654 | case R_VAX_PC32: | |
1655 | if (h == NULL) | |
1656 | break; | |
1657 | /* Fall through. */ | |
1658 | case R_VAX_8: | |
1659 | case R_VAX_16: | |
1660 | case R_VAX_32: | |
1661 | if (info->shared | |
1662 | && r_symndx != 0 | |
1663 | && (input_section->flags & SEC_ALLOC) != 0 | |
1664 | && ((r_type != R_VAX_PC8 | |
1665 | && r_type != R_VAX_PC16 | |
1666 | && r_type != R_VAX_PC32) | |
1667 | || (!info->symbolic | |
1668 | || (h->elf_link_hash_flags | |
1669 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
1670 | { | |
1671 | Elf_Internal_Rela outrel; | |
947216bf | 1672 | bfd_byte *loc; |
b34976b6 | 1673 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1674 | |
1675 | /* When generating a shared object, these relocations | |
1676 | are copied into the output file to be resolved at run | |
1677 | time. */ | |
90ace9e9 JT |
1678 | if (sreloc == NULL) |
1679 | { | |
1680 | const char *name; | |
1681 | ||
1682 | name = (bfd_elf_string_from_elf_section | |
1683 | (input_bfd, | |
1684 | elf_elfheader (input_bfd)->e_shstrndx, | |
1685 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1686 | if (name == NULL) | |
b34976b6 | 1687 | return FALSE; |
90ace9e9 JT |
1688 | |
1689 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1690 | && strcmp (bfd_get_section_name (input_bfd, | |
1691 | input_section), | |
1692 | name + 5) == 0); | |
1693 | ||
1694 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1695 | BFD_ASSERT (sreloc != NULL); | |
1696 | } | |
1697 | ||
b34976b6 AM |
1698 | skip = FALSE; |
1699 | relocate = FALSE; | |
90ace9e9 JT |
1700 | |
1701 | outrel.r_offset = | |
1702 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1703 | rel->r_offset); | |
1704 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1705 | skip = TRUE; |
90ace9e9 | 1706 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1707 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1708 | outrel.r_offset += (input_section->output_section->vma |
1709 | + input_section->output_offset); | |
1710 | ||
1711 | if (skip) | |
1712 | memset (&outrel, 0, sizeof outrel); | |
1713 | /* h->dynindx may be -1 if the symbol was marked to | |
1714 | become local. */ | |
1715 | else if (h != NULL | |
1716 | && ((! info->symbolic && h->dynindx != -1) | |
1717 | || (h->elf_link_hash_flags | |
1718 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1719 | { | |
1720 | BFD_ASSERT (h->dynindx != -1); | |
1721 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1722 | outrel.r_addend = relocation + rel->r_addend; | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | if (r_type == R_VAX_32) | |
1727 | { | |
b34976b6 | 1728 | relocate = TRUE; |
90ace9e9 JT |
1729 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1730 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1731 | &contents[rel->r_offset]) == 0); | |
1732 | outrel.r_addend = relocation + rel->r_addend; | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | long indx; | |
1737 | ||
8517fae7 | 1738 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1739 | indx = 0; |
1740 | else if (sec == NULL || sec->owner == NULL) | |
1741 | { | |
1742 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1743 | return FALSE; |
90ace9e9 JT |
1744 | } |
1745 | else | |
1746 | { | |
1747 | asection *osec; | |
1748 | ||
1749 | osec = sec->output_section; | |
1750 | indx = elf_section_data (osec)->dynindx; | |
1751 | BFD_ASSERT (indx > 0); | |
1752 | } | |
1753 | ||
1754 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1755 | outrel.r_addend = relocation + rel->r_addend; | |
1756 | } | |
1757 | } | |
1758 | ||
1759 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1760 | ".text") != 0 || |
90ace9e9 JT |
1761 | (info->shared |
1762 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1763 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1764 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1765 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1766 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1767 | { | |
1768 | if (h != NULL) | |
1769 | (*_bfd_error_handler) | |
1770 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1771 | bfd_get_filename (input_bfd), howto->name, | |
1772 | h->root.root.string, | |
1773 | bfd_get_section_name (input_bfd, input_section)); | |
1774 | else | |
1775 | (*_bfd_error_handler) | |
1776 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1777 | bfd_get_filename (input_bfd), howto->name, | |
1778 | outrel.r_addend, | |
1779 | bfd_get_section_name (input_bfd, input_section)); | |
1780 | } | |
947216bf AM |
1781 | loc = sreloc->contents; |
1782 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1783 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1784 | |
1785 | /* This reloc will be computed at runtime, so there's no | |
1786 | need to do anything now, except for R_VAX_32 | |
1787 | relocations that have been turned into | |
1788 | R_VAX_RELATIVE. */ | |
1789 | if (!relocate) | |
1790 | continue; | |
1791 | } | |
1792 | ||
1793 | break; | |
1794 | ||
1795 | case R_VAX_GNU_VTINHERIT: | |
1796 | case R_VAX_GNU_VTENTRY: | |
1797 | /* These are no-ops in the end. */ | |
1798 | continue; | |
1799 | ||
1800 | default: | |
1801 | break; | |
1802 | } | |
1803 | ||
b34976b6 | 1804 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1805 | So subtract the difference from the relocation amount since we can't |
1806 | add it to the offset. */ | |
90ace9e9 | 1807 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1808 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1809 | |
1810 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1811 | contents, rel->r_offset, | |
1812 | relocation, rel->r_addend); | |
1813 | ||
1814 | if (r != bfd_reloc_ok) | |
1815 | { | |
1816 | switch (r) | |
1817 | { | |
1818 | default: | |
1819 | case bfd_reloc_outofrange: | |
1820 | abort (); | |
1821 | case bfd_reloc_overflow: | |
1822 | { | |
1823 | const char *name; | |
1824 | ||
1825 | if (h != NULL) | |
1826 | name = h->root.root.string; | |
1827 | else | |
1828 | { | |
1829 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1830 | symtab_hdr->sh_link, | |
1831 | sym->st_name); | |
1832 | if (name == NULL) | |
b34976b6 | 1833 | return FALSE; |
90ace9e9 JT |
1834 | if (*name == '\0') |
1835 | name = bfd_section_name (input_bfd, sec); | |
1836 | } | |
1837 | if (!(info->callbacks->reloc_overflow | |
1838 | (info, name, howto->name, (bfd_vma) 0, | |
1839 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1840 | return FALSE; |
90ace9e9 JT |
1841 | } |
1842 | break; | |
1843 | } | |
1844 | } | |
1845 | } | |
1846 | ||
b34976b6 | 1847 | return TRUE; |
90ace9e9 JT |
1848 | } |
1849 | ||
1850 | /* Finish up dynamic symbol handling. We set the contents of various | |
1851 | dynamic sections here. */ | |
1852 | ||
b34976b6 | 1853 | static bfd_boolean |
90ace9e9 JT |
1854 | elf_vax_finish_dynamic_symbol (output_bfd, info, h, sym) |
1855 | bfd *output_bfd; | |
1856 | struct bfd_link_info *info; | |
1857 | struct elf_link_hash_entry *h; | |
1858 | Elf_Internal_Sym *sym; | |
1859 | { | |
1860 | bfd *dynobj; | |
1861 | ||
1862 | dynobj = elf_hash_table (info)->dynobj; | |
1863 | ||
1864 | if (h->plt.offset != (bfd_vma) -1) | |
1865 | { | |
1866 | asection *splt; | |
1867 | asection *sgot; | |
1868 | asection *srela; | |
1869 | bfd_vma plt_index; | |
1870 | bfd_vma got_offset; | |
1871 | bfd_vma addend; | |
1872 | Elf_Internal_Rela rela; | |
947216bf | 1873 | bfd_byte *loc; |
90ace9e9 JT |
1874 | |
1875 | /* This symbol has an entry in the procedure linkage table. Set | |
1876 | it up. */ | |
90ace9e9 JT |
1877 | BFD_ASSERT (h->dynindx != -1); |
1878 | ||
1879 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1880 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1881 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1882 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1883 | ||
1884 | addend = 2 * (h->plt.offset & 1); | |
1885 | h->plt.offset &= ~1; | |
1886 | ||
1887 | /* Get the index in the procedure linkage table which | |
1888 | corresponds to this symbol. This is the index of this symbol | |
1889 | in all the symbols for which we are making plt entries. The | |
1890 | first entry in the procedure linkage table is reserved. */ | |
1891 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1892 | ||
1893 | /* Get the offset into the .got table of the entry that | |
1894 | corresponds to this function. Each .got entry is 4 bytes. | |
1895 | The first two are reserved. */ | |
1896 | got_offset = (plt_index + 3) * 4; | |
1897 | ||
1898 | /* Fill in the entry in the procedure linkage table. */ | |
1899 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1900 | PLT_ENTRY_SIZE); | |
1901 | ||
1902 | /* The offset is relative to the first extension word. */ | |
1903 | bfd_put_32 (output_bfd, | |
1904 | -(h->plt.offset + 8), | |
1905 | splt->contents + h->plt.offset + 4); | |
1906 | ||
1907 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1908 | splt->contents + h->plt.offset + 8); | |
1909 | ||
1910 | /* Fill in the entry in the global offset table. */ | |
1911 | bfd_put_32 (output_bfd, | |
1912 | (splt->output_section->vma | |
1913 | + splt->output_offset | |
1914 | + h->plt.offset) + addend, | |
1915 | sgot->contents + got_offset); | |
1916 | ||
1917 | /* Fill in the entry in the .rela.plt section. */ | |
1918 | rela.r_offset = (sgot->output_section->vma | |
1919 | + sgot->output_offset | |
1920 | + got_offset); | |
1921 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1922 | rela.r_addend = addend; | |
947216bf AM |
1923 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1924 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1925 | |
1926 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1927 | { | |
1928 | /* Mark the symbol as undefined, rather than as defined in | |
1929 | the .plt section. Leave the value alone. */ | |
1930 | sym->st_shndx = SHN_UNDEF; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | if (h->got.offset != (bfd_vma) -1) | |
1935 | { | |
1936 | asection *sgot; | |
1937 | asection *srela; | |
1938 | Elf_Internal_Rela rela; | |
947216bf | 1939 | bfd_byte *loc; |
90ace9e9 JT |
1940 | |
1941 | /* This symbol has an entry in the global offset table. Set it | |
1942 | up. */ | |
90ace9e9 JT |
1943 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1944 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1945 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1946 | ||
1947 | rela.r_offset = (sgot->output_section->vma | |
1948 | + sgot->output_offset | |
1949 | + (h->got.offset &~ 1)); | |
1950 | ||
1951 | /* If the symbol was forced to be local because of a version file | |
1952 | locally we just want to emit a RELATIVE reloc. The entry in | |
1953 | the global offset table will already have been initialized in | |
1954 | the relocate_section function. */ | |
1955 | if (info->shared | |
1956 | && h->dynindx == -1 | |
1957 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
1958 | { | |
1959 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1964 | } | |
1965 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1966 | (sgot->contents | |
1967 | + (h->got.offset & ~1))); | |
1968 | ||
947216bf AM |
1969 | loc = srela->contents; |
1970 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1971 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1972 | } |
1973 | ||
1974 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
1975 | { | |
1976 | asection *s; | |
1977 | Elf_Internal_Rela rela; | |
947216bf | 1978 | bfd_byte *loc; |
90ace9e9 JT |
1979 | |
1980 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1981 | BFD_ASSERT (h->dynindx != -1 |
1982 | && (h->root.type == bfd_link_hash_defined | |
1983 | || h->root.type == bfd_link_hash_defweak)); | |
1984 | ||
1985 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1986 | ".rela.bss"); | |
1987 | BFD_ASSERT (s != NULL); | |
1988 | ||
1989 | rela.r_offset = (h->root.u.def.value | |
1990 | + h->root.u.def.section->output_section->vma | |
1991 | + h->root.u.def.section->output_offset); | |
1992 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1993 | rela.r_addend = 0; | |
947216bf AM |
1994 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1995 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1996 | } |
1997 | ||
1998 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1999 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2000 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2001 | sym->st_shndx = SHN_ABS; | |
2002 | ||
b34976b6 | 2003 | return TRUE; |
90ace9e9 JT |
2004 | } |
2005 | ||
2006 | /* Finish up the dynamic sections. */ | |
2007 | ||
b34976b6 | 2008 | static bfd_boolean |
90ace9e9 JT |
2009 | elf_vax_finish_dynamic_sections (output_bfd, info) |
2010 | bfd *output_bfd; | |
2011 | struct bfd_link_info *info; | |
2012 | { | |
2013 | bfd *dynobj; | |
2014 | asection *sgot; | |
2015 | asection *sdyn; | |
2016 | ||
2017 | dynobj = elf_hash_table (info)->dynobj; | |
2018 | ||
2019 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2020 | BFD_ASSERT (sgot != NULL); | |
2021 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2022 | ||
2023 | if (elf_hash_table (info)->dynamic_sections_created) | |
2024 | { | |
2025 | asection *splt; | |
2026 | Elf32_External_Dyn *dyncon, *dynconend; | |
2027 | ||
2028 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2029 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2030 | ||
2031 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2032 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
2033 | for (; dyncon < dynconend; dyncon++) |
2034 | { | |
2035 | Elf_Internal_Dyn dyn; | |
2036 | const char *name; | |
2037 | asection *s; | |
2038 | ||
2039 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2040 | ||
2041 | switch (dyn.d_tag) | |
2042 | { | |
2043 | default: | |
2044 | break; | |
2045 | ||
2046 | case DT_PLTGOT: | |
2047 | name = ".got"; | |
2048 | goto get_vma; | |
2049 | case DT_JMPREL: | |
2050 | name = ".rela.plt"; | |
2051 | get_vma: | |
2052 | s = bfd_get_section_by_name (output_bfd, name); | |
2053 | BFD_ASSERT (s != NULL); | |
2054 | dyn.d_un.d_ptr = s->vma; | |
2055 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2056 | break; | |
2057 | ||
2058 | case DT_PLTRELSZ: | |
2059 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2060 | BFD_ASSERT (s != NULL); | |
eea6121a | 2061 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2062 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2063 | break; | |
2064 | ||
2065 | case DT_RELASZ: | |
2066 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2067 | not be included in the overall relocs (DT_RELA). | |
2068 | Therefore, we override the DT_RELASZ entry here to | |
2069 | make it not include the JMPREL relocs. Since the | |
2070 | linker script arranges for .rela.plt to follow all | |
2071 | other relocation sections, we don't have to worry | |
2072 | about changing the DT_RELA entry. */ | |
2073 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2074 | if (s != NULL) | |
eea6121a | 2075 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2076 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2077 | break; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2082 | if (splt->size > 0) |
90ace9e9 JT |
2083 | { |
2084 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2085 | bfd_put_32 (output_bfd, | |
2086 | (sgot->output_section->vma | |
2087 | + sgot->output_offset + 4 | |
2088 | - (splt->output_section->vma + 6)), | |
2089 | splt->contents + 2); | |
2090 | bfd_put_32 (output_bfd, | |
2091 | (sgot->output_section->vma | |
2092 | + sgot->output_offset + 8 | |
2093 | - (splt->output_section->vma + 12)), | |
2094 | splt->contents + 8); | |
cedb70c5 | 2095 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2096 | = PLT_ENTRY_SIZE; |
2097 | } | |
2098 | } | |
2099 | ||
2100 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2101 | if (sgot->size > 0) |
90ace9e9 JT |
2102 | { |
2103 | if (sdyn == NULL) | |
2104 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2105 | else | |
2106 | bfd_put_32 (output_bfd, | |
2107 | sdyn->output_section->vma + sdyn->output_offset, | |
2108 | sgot->contents); | |
2109 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2110 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2111 | } | |
2112 | ||
2113 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2114 | ||
b34976b6 | 2115 | return TRUE; |
90ace9e9 JT |
2116 | } |
2117 | ||
2118 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec | |
2119 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2120 | #define ELF_MACHINE_CODE EM_VAX | |
2121 | #define ELF_MAXPAGESIZE 0x1000 | |
2122 | ||
2123 | #define elf_backend_create_dynamic_sections \ | |
2124 | _bfd_elf_create_dynamic_sections | |
2125 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2126 | elf_vax_link_hash_table_create | |
c152c796 | 2127 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2128 | |
2129 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2130 | #define elf_backend_adjust_dynamic_symbol \ | |
2131 | elf_vax_adjust_dynamic_symbol | |
2132 | #define elf_backend_size_dynamic_sections \ | |
2133 | elf_vax_size_dynamic_sections | |
2134 | #define elf_backend_relocate_section elf_vax_relocate_section | |
2135 | #define elf_backend_finish_dynamic_symbol \ | |
2136 | elf_vax_finish_dynamic_symbol | |
2137 | #define elf_backend_finish_dynamic_sections \ | |
2138 | elf_vax_finish_dynamic_sections | |
2139 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook | |
2140 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2141 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2142 | elf32_vax_merge_private_bfd_data | |
2143 | #define bfd_elf32_bfd_set_private_flags \ | |
2144 | elf32_vax_set_private_flags | |
2145 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2146 | elf32_vax_print_private_bfd_data | |
2147 | ||
2148 | #define elf_backend_can_gc_sections 1 | |
2149 | #define elf_backend_want_got_plt 1 | |
2150 | #define elf_backend_plt_readonly 1 | |
2151 | #define elf_backend_want_plt_sym 0 | |
2152 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2153 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2154 | |
2155 | #include "elf32-target.h" |