Commit | Line | Data |
---|---|---|
90ace9e9 | 1 | /* VAX series support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
66eb6687 | 3 | 2004, 2005, 2006 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 | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 | ||
ce71b576 NC |
29 | static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type); |
30 | static void rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *); | |
31 | static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *, | |
32 | struct bfd_hash_table *, | |
33 | const char *); | |
34 | static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *); | |
35 | static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *, | |
36 | asection *, const Elf_Internal_Rela *); | |
37 | static asection *elf_vax_gc_mark_hook (asection *, struct bfd_link_info *, | |
38 | Elf_Internal_Rela *, | |
39 | struct elf_link_hash_entry *, | |
40 | Elf_Internal_Sym *); | |
41 | static bfd_boolean elf_vax_gc_sweep_hook (bfd *, struct bfd_link_info *, | |
42 | asection *, | |
43 | const Elf_Internal_Rela *); | |
44 | static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *, | |
45 | struct elf_link_hash_entry *); | |
46 | static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *); | |
47 | static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *, | |
48 | bfd *, asection *, bfd_byte *, | |
49 | Elf_Internal_Rela *, | |
50 | Elf_Internal_Sym *, asection **); | |
51 | static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *, | |
52 | struct elf_link_hash_entry *, | |
53 | Elf_Internal_Sym *); | |
54 | static bfd_boolean elf_vax_finish_dynamic_sections (bfd *, | |
55 | struct bfd_link_info *); | |
56 | ||
57 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
58 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
59 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, PTR); | |
90ace9e9 JT |
60 | |
61 | static reloc_howto_type howto_table[] = { | |
62 | HOWTO (R_VAX_NONE, /* type */ | |
63 | 0, /* rightshift */ | |
64 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
65 | 0, /* bitsize */ | |
b34976b6 | 66 | FALSE, /* pc_relative */ |
90ace9e9 JT |
67 | 0, /* bitpos */ |
68 | complain_overflow_dont, /* complain_on_overflow */ | |
69 | bfd_elf_generic_reloc, /* special_function */ | |
70 | "R_VAX_NONE", /* name */ | |
b34976b6 | 71 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
72 | 0, /* src_mask */ |
73 | 0x00000000, /* dst_mask */ | |
b34976b6 | 74 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
75 | |
76 | HOWTO (R_VAX_32, /* type */ | |
77 | 0, /* rightshift */ | |
78 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
79 | 32, /* bitsize */ | |
b34976b6 | 80 | FALSE, /* pc_relative */ |
90ace9e9 JT |
81 | 0, /* bitpos */ |
82 | complain_overflow_bitfield, /* complain_on_overflow */ | |
83 | bfd_elf_generic_reloc, /* special_function */ | |
84 | "R_VAX_32", /* name */ | |
b34976b6 | 85 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
86 | 0, /* src_mask */ |
87 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 88 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
89 | |
90 | HOWTO (R_VAX_16, /* type */ | |
91 | 0, /* rightshift */ | |
92 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
93 | 16, /* bitsize */ | |
b34976b6 | 94 | FALSE, /* pc_relative */ |
90ace9e9 JT |
95 | 0, /* bitpos */ |
96 | complain_overflow_bitfield, /* complain_on_overflow */ | |
97 | bfd_elf_generic_reloc, /* special_function */ | |
98 | "R_VAX_16", /* name */ | |
b34976b6 | 99 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
100 | 0, /* src_mask */ |
101 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 102 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
103 | |
104 | HOWTO (R_VAX_8, /* type */ | |
105 | 0, /* rightshift */ | |
106 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
107 | 8, /* bitsize */ | |
b34976b6 | 108 | FALSE, /* pc_relative */ |
90ace9e9 JT |
109 | 0, /* bitpos */ |
110 | complain_overflow_bitfield, /* complain_on_overflow */ | |
111 | bfd_elf_generic_reloc, /* special_function */ | |
112 | "R_VAX_8", /* name */ | |
b34976b6 | 113 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
114 | 0, /* src_mask */ |
115 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 116 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
117 | |
118 | HOWTO (R_VAX_PC32, /* type */ | |
119 | 0, /* rightshift */ | |
120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
121 | 32, /* bitsize */ | |
b34976b6 | 122 | TRUE, /* pc_relative */ |
90ace9e9 JT |
123 | 0, /* bitpos */ |
124 | complain_overflow_bitfield, /* complain_on_overflow */ | |
125 | bfd_elf_generic_reloc, /* special_function */ | |
126 | "R_VAX_PC32", /* name */ | |
b34976b6 | 127 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
128 | 0, /* src_mask */ |
129 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 130 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
131 | |
132 | HOWTO (R_VAX_PC16, /* type */ | |
133 | 0, /* rightshift */ | |
134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
135 | 16, /* bitsize */ | |
b34976b6 | 136 | TRUE, /* pc_relative */ |
90ace9e9 JT |
137 | 0, /* bitpos */ |
138 | complain_overflow_signed, /* complain_on_overflow */ | |
139 | bfd_elf_generic_reloc, /* special_function */ | |
140 | "R_VAX_PC16", /* name */ | |
b34976b6 | 141 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
142 | 0, /* src_mask */ |
143 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 144 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
145 | |
146 | HOWTO (R_VAX_PC8, /* type */ | |
147 | 0, /* rightshift */ | |
148 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
149 | 8, /* bitsize */ | |
b34976b6 | 150 | TRUE, /* pc_relative */ |
90ace9e9 JT |
151 | 0, /* bitpos */ |
152 | complain_overflow_signed, /* complain_on_overflow */ | |
153 | bfd_elf_generic_reloc, /* special_function */ | |
154 | "R_VAX_PC8", /* name */ | |
b34976b6 | 155 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
156 | 0, /* src_mask */ |
157 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 158 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
159 | |
160 | HOWTO (R_VAX_GOT32, /* type */ | |
161 | 0, /* rightshift */ | |
162 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
163 | 32, /* bitsize */ | |
b34976b6 | 164 | TRUE, /* pc_relative */ |
90ace9e9 JT |
165 | 0, /* bitpos */ |
166 | complain_overflow_bitfield, /* complain_on_overflow */ | |
167 | bfd_elf_generic_reloc, /* special_function */ | |
168 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 169 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
170 | 0, /* src_mask */ |
171 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 172 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
173 | |
174 | EMPTY_HOWTO (-1), | |
175 | EMPTY_HOWTO (-1), | |
176 | EMPTY_HOWTO (-1), | |
177 | EMPTY_HOWTO (-1), | |
178 | EMPTY_HOWTO (-1), | |
179 | ||
180 | HOWTO (R_VAX_PLT32, /* type */ | |
181 | 0, /* rightshift */ | |
182 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
183 | 32, /* bitsize */ | |
b34976b6 | 184 | TRUE, /* pc_relative */ |
90ace9e9 JT |
185 | 0, /* bitpos */ |
186 | complain_overflow_bitfield, /* complain_on_overflow */ | |
187 | bfd_elf_generic_reloc, /* special_function */ | |
188 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 189 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
190 | 0, /* src_mask */ |
191 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 192 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
193 | |
194 | EMPTY_HOWTO (-1), | |
195 | EMPTY_HOWTO (-1), | |
196 | EMPTY_HOWTO (-1), | |
197 | EMPTY_HOWTO (-1), | |
198 | EMPTY_HOWTO (-1), | |
199 | ||
200 | HOWTO (R_VAX_COPY, /* type */ | |
201 | 0, /* rightshift */ | |
202 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
203 | 0, /* bitsize */ | |
b34976b6 | 204 | FALSE, /* pc_relative */ |
90ace9e9 JT |
205 | 0, /* bitpos */ |
206 | complain_overflow_dont, /* complain_on_overflow */ | |
207 | bfd_elf_generic_reloc, /* special_function */ | |
208 | "R_VAX_COPY", /* name */ | |
b34976b6 | 209 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
210 | 0, /* src_mask */ |
211 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 212 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
213 | |
214 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
215 | 0, /* rightshift */ | |
216 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
217 | 32, /* bitsize */ | |
b34976b6 | 218 | FALSE, /* pc_relative */ |
90ace9e9 JT |
219 | 0, /* bitpos */ |
220 | complain_overflow_dont, /* complain_on_overflow */ | |
221 | bfd_elf_generic_reloc, /* special_function */ | |
222 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 223 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
224 | 0, /* src_mask */ |
225 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 226 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
227 | |
228 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
229 | 0, /* rightshift */ | |
230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 32, /* bitsize */ | |
b34976b6 | 232 | FALSE, /* pc_relative */ |
90ace9e9 JT |
233 | 0, /* bitpos */ |
234 | complain_overflow_dont, /* complain_on_overflow */ | |
235 | bfd_elf_generic_reloc, /* special_function */ | |
236 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 237 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
238 | 0, /* src_mask */ |
239 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 240 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
241 | |
242 | HOWTO (R_VAX_RELATIVE, /* type */ | |
243 | 0, /* rightshift */ | |
244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
245 | 32, /* bitsize */ | |
b34976b6 | 246 | FALSE, /* pc_relative */ |
90ace9e9 JT |
247 | 0, /* bitpos */ |
248 | complain_overflow_dont, /* complain_on_overflow */ | |
249 | bfd_elf_generic_reloc, /* special_function */ | |
250 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 251 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
252 | 0, /* src_mask */ |
253 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 254 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
255 | |
256 | /* GNU extension to record C++ vtable hierarchy */ | |
257 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
258 | 0, /* rightshift */ | |
259 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
260 | 0, /* bitsize */ | |
b34976b6 | 261 | FALSE, /* pc_relative */ |
90ace9e9 JT |
262 | 0, /* bitpos */ |
263 | complain_overflow_dont, /* complain_on_overflow */ | |
264 | NULL, /* special_function */ | |
265 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 266 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
267 | 0, /* src_mask */ |
268 | 0, /* dst_mask */ | |
b34976b6 | 269 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
270 | |
271 | /* GNU extension to record C++ vtable member usage */ | |
272 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
273 | 0, /* rightshift */ | |
274 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 0, /* bitsize */ | |
b34976b6 | 276 | FALSE, /* pc_relative */ |
90ace9e9 JT |
277 | 0, /* bitpos */ |
278 | complain_overflow_dont, /* complain_on_overflow */ | |
279 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
280 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 281 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
282 | 0, /* src_mask */ |
283 | 0, /* dst_mask */ | |
b34976b6 | 284 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
285 | }; |
286 | ||
287 | static void | |
ce71b576 NC |
288 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
289 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
290 | { |
291 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
292 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
293 | } | |
294 | ||
295 | #define elf_info_to_howto rtype_to_howto | |
296 | ||
297 | static const struct | |
298 | { | |
299 | bfd_reloc_code_real_type bfd_val; | |
300 | int elf_val; | |
301 | } reloc_map[] = { | |
302 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
303 | { BFD_RELOC_32, R_VAX_32 }, | |
304 | { BFD_RELOC_16, R_VAX_16 }, | |
305 | { BFD_RELOC_8, R_VAX_8 }, | |
306 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
307 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
308 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
309 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
310 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
311 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
312 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
313 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
314 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
315 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
316 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
317 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
318 | }; | |
319 | ||
320 | static reloc_howto_type * | |
ce71b576 | 321 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
322 | { |
323 | unsigned int i; | |
324 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
325 | { | |
326 | if (reloc_map[i].bfd_val == code) | |
327 | return &howto_table[reloc_map[i].elf_val]; | |
328 | } | |
329 | return 0; | |
330 | } | |
331 | ||
332 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
333 | #define ELF_ARCH bfd_arch_vax | |
334 | /* end code generated by elf.el */ | |
90ace9e9 JT |
335 | \f |
336 | /* Functions for the VAX ELF linker. */ | |
337 | ||
338 | /* The name of the dynamic interpreter. This is put in the .interp | |
339 | section. */ | |
340 | ||
341 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
342 | ||
343 | /* The size in bytes of an entry in the procedure linkage table. */ | |
344 | ||
345 | #define PLT_ENTRY_SIZE 12 | |
346 | ||
347 | /* The first entry in a procedure linkage table looks like this. See | |
348 | the SVR4 ABI VAX supplement to see how this works. */ | |
349 | ||
350 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
351 | { | |
352 | 0xdd, 0xef, /* pushl l^ */ | |
353 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
354 | 0x17, 0xff, /* jmp @L^(pc) */ | |
355 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
356 | }; | |
357 | ||
358 | /* Subsequent entries in a procedure linkage table look like this. */ | |
359 | ||
360 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
361 | { | |
362 | 0x40, 0x00, /* .word ^M<r6> */ | |
363 | 0x16, 0xef, /* jsb L^(pc) */ | |
364 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ | |
365 | 0, 0, 0, 0, /* index into .rela.plt */ | |
366 | }; | |
367 | ||
368 | /* The VAX linker needs to keep track of the number of relocs that it | |
369 | decides to copy in check_relocs for each symbol. This is so that it | |
370 | can discard PC relative relocs if it doesn't need them when linking | |
371 | with -Bsymbolic. We store the information in a field extending the | |
372 | regular ELF linker hash table. */ | |
373 | ||
374 | /* This structure keeps track of the number of PC relative relocs we have | |
375 | copied for a given symbol. */ | |
376 | ||
377 | struct elf_vax_pcrel_relocs_copied | |
378 | { | |
379 | /* Next section. */ | |
380 | struct elf_vax_pcrel_relocs_copied *next; | |
381 | /* A section in dynobj. */ | |
382 | asection *section; | |
383 | /* Number of relocs copied in this section. */ | |
384 | bfd_size_type count; | |
385 | }; | |
386 | ||
387 | /* VAX ELF linker hash entry. */ | |
388 | ||
389 | struct elf_vax_link_hash_entry | |
390 | { | |
391 | struct elf_link_hash_entry root; | |
392 | ||
393 | /* Number of PC relative relocs copied for this symbol. */ | |
394 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
395 | ||
396 | bfd_vma got_addend; | |
397 | }; | |
398 | ||
399 | /* VAX ELF linker hash table. */ | |
400 | ||
401 | struct elf_vax_link_hash_table | |
402 | { | |
403 | struct elf_link_hash_table root; | |
404 | }; | |
405 | ||
406 | /* Declare this now that the above structures are defined. */ | |
407 | ||
ce71b576 NC |
408 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
409 | PTR); | |
90ace9e9 | 410 | |
b29635ba JT |
411 | /* Declare this now that the above structures are defined. */ |
412 | ||
ce71b576 NC |
413 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
414 | PTR); | |
b29635ba | 415 | |
90ace9e9 JT |
416 | /* Traverse an VAX ELF linker hash table. */ |
417 | ||
418 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
419 | (elf_link_hash_traverse \ | |
420 | (&(table)->root, \ | |
ce71b576 | 421 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
90ace9e9 JT |
422 | (info))) |
423 | ||
424 | /* Get the VAX ELF linker hash table from a link_info structure. */ | |
425 | ||
ce71b576 | 426 | #define elf_vax_hash_table(p) ((struct elf_vax_link_hash_table *) (p)->hash) |
90ace9e9 JT |
427 | |
428 | /* Create an entry in an VAX ELF linker hash table. */ | |
429 | ||
430 | static struct bfd_hash_entry * | |
ce71b576 NC |
431 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
432 | struct bfd_hash_table *table, | |
433 | const char *string) | |
90ace9e9 JT |
434 | { |
435 | struct elf_vax_link_hash_entry *ret = | |
436 | (struct elf_vax_link_hash_entry *) entry; | |
437 | ||
438 | /* Allocate the structure if it has not already been allocated by a | |
439 | subclass. */ | |
ce71b576 | 440 | if (ret == NULL) |
90ace9e9 JT |
441 | ret = ((struct elf_vax_link_hash_entry *) |
442 | bfd_hash_allocate (table, | |
443 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 444 | if (ret == NULL) |
90ace9e9 JT |
445 | return (struct bfd_hash_entry *) ret; |
446 | ||
447 | /* Call the allocation method of the superclass. */ | |
448 | ret = ((struct elf_vax_link_hash_entry *) | |
449 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
450 | table, string)); | |
ce71b576 | 451 | if (ret != NULL) |
90ace9e9 JT |
452 | { |
453 | ret->pcrel_relocs_copied = NULL; | |
454 | } | |
455 | ||
456 | return (struct bfd_hash_entry *) ret; | |
457 | } | |
458 | ||
459 | /* Create an VAX ELF linker hash table. */ | |
460 | ||
461 | static struct bfd_link_hash_table * | |
ce71b576 | 462 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 JT |
463 | { |
464 | struct elf_vax_link_hash_table *ret; | |
465 | bfd_size_type amt = sizeof (struct elf_vax_link_hash_table); | |
466 | ||
ce71b576 NC |
467 | ret = bfd_malloc (amt); |
468 | if (ret == NULL) | |
90ace9e9 JT |
469 | return NULL; |
470 | ||
66eb6687 AM |
471 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
472 | elf_vax_link_hash_newfunc, | |
473 | sizeof (struct elf_vax_link_hash_entry))) | |
90ace9e9 JT |
474 | { |
475 | free (ret); | |
476 | return NULL; | |
477 | } | |
478 | ||
479 | return &ret->root.root; | |
480 | } | |
481 | ||
482 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 483 | static bfd_boolean |
ce71b576 | 484 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
485 | { |
486 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
487 | elf_flags_init (abfd) = TRUE; |
488 | return TRUE; | |
90ace9e9 JT |
489 | } |
490 | ||
491 | /* Merge backend specific data from an object file to the output | |
492 | object file when linking. */ | |
b34976b6 | 493 | static bfd_boolean |
ce71b576 | 494 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 JT |
495 | { |
496 | flagword out_flags; | |
497 | flagword in_flags; | |
498 | ||
499 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
500 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 501 | return TRUE; |
90ace9e9 JT |
502 | |
503 | in_flags = elf_elfheader (ibfd)->e_flags; | |
504 | out_flags = elf_elfheader (obfd)->e_flags; | |
505 | ||
506 | if (!elf_flags_init (obfd)) | |
507 | { | |
b34976b6 | 508 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
509 | elf_elfheader (obfd)->e_flags = in_flags; |
510 | } | |
511 | ||
b34976b6 | 512 | return TRUE; |
90ace9e9 JT |
513 | } |
514 | ||
515 | /* Display the flags field */ | |
b34976b6 | 516 | static bfd_boolean |
ce71b576 | 517 | elf32_vax_print_private_bfd_data (bfd *abfd, PTR ptr) |
90ace9e9 JT |
518 | { |
519 | FILE *file = (FILE *) ptr; | |
520 | ||
521 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
522 | ||
523 | /* Print normal ELF private data. */ | |
524 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
525 | ||
526 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
527 | ||
528 | /* xgettext:c-format */ | |
529 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
530 | ||
179d3252 | 531 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
532 | fprintf (file, _(" [nonpic]")); |
533 | ||
179d3252 | 534 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
535 | fprintf (file, _(" [d-float]")); |
536 | ||
179d3252 | 537 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
538 | fprintf (file, _(" [g-float]")); |
539 | ||
540 | fputc ('\n', file); | |
541 | ||
b34976b6 | 542 | return TRUE; |
90ace9e9 JT |
543 | } |
544 | /* Look through the relocs for a section during the first phase, and | |
545 | allocate space in the global offset table or procedure linkage | |
546 | table. */ | |
547 | ||
b34976b6 | 548 | static bfd_boolean |
ce71b576 NC |
549 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
550 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
551 | { |
552 | bfd *dynobj; | |
553 | Elf_Internal_Shdr *symtab_hdr; | |
554 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
555 | const Elf_Internal_Rela *rel; |
556 | const Elf_Internal_Rela *rel_end; | |
557 | asection *sgot; | |
558 | asection *srelgot; | |
559 | asection *sreloc; | |
560 | ||
1049f94e | 561 | if (info->relocatable) |
b34976b6 | 562 | return TRUE; |
90ace9e9 JT |
563 | |
564 | dynobj = elf_hash_table (info)->dynobj; | |
565 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
566 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
567 | |
568 | sgot = NULL; | |
569 | srelgot = NULL; | |
570 | sreloc = NULL; | |
571 | ||
572 | rel_end = relocs + sec->reloc_count; | |
573 | for (rel = relocs; rel < rel_end; rel++) | |
574 | { | |
575 | unsigned long r_symndx; | |
576 | struct elf_link_hash_entry *h; | |
577 | ||
578 | r_symndx = ELF32_R_SYM (rel->r_info); | |
579 | ||
580 | if (r_symndx < symtab_hdr->sh_info) | |
581 | h = NULL; | |
582 | else | |
973a3492 L |
583 | { |
584 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
585 | while (h->root.type == bfd_link_hash_indirect | |
586 | || h->root.type == bfd_link_hash_warning) | |
587 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
588 | } | |
90ace9e9 JT |
589 | |
590 | switch (ELF32_R_TYPE (rel->r_info)) | |
591 | { | |
592 | case R_VAX_GOT32: | |
593 | if (h != NULL | |
594 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
595 | break; | |
596 | ||
597 | /* This symbol requires a global offset table entry. */ | |
598 | ||
599 | if (dynobj == NULL) | |
600 | { | |
601 | /* Create the .got section. */ | |
602 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
603 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 604 | return FALSE; |
90ace9e9 JT |
605 | } |
606 | ||
607 | if (sgot == NULL) | |
608 | { | |
609 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
610 | BFD_ASSERT (sgot != NULL); | |
611 | } | |
612 | ||
613 | if (srelgot == NULL | |
614 | && (h != NULL || info->shared)) | |
615 | { | |
616 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
617 | if (srelgot == NULL) | |
618 | { | |
3496cb2a L |
619 | srelgot = bfd_make_section_with_flags (dynobj, |
620 | ".rela.got", | |
621 | (SEC_ALLOC | |
622 | | SEC_LOAD | |
623 | | SEC_HAS_CONTENTS | |
624 | | SEC_IN_MEMORY | |
625 | | SEC_LINKER_CREATED | |
626 | | SEC_READONLY)); | |
90ace9e9 | 627 | if (srelgot == NULL |
90ace9e9 | 628 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 629 | return FALSE; |
90ace9e9 JT |
630 | } |
631 | } | |
632 | ||
633 | if (h != NULL) | |
634 | { | |
635 | struct elf_vax_link_hash_entry *eh; | |
636 | ||
637 | eh = (struct elf_vax_link_hash_entry *) h; | |
638 | if (h->got.refcount == -1) | |
639 | { | |
640 | h->got.refcount = 1; | |
641 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
642 | } |
643 | else | |
644 | { | |
645 | h->got.refcount++; | |
646 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
647 | (*_bfd_error_handler) | |
648 | (_("%s: warning: GOT addend of %ld to `%s' does not match previous GOT addend of %ld"), | |
649 | bfd_get_filename (abfd), rel->r_addend, | |
650 | h->root.root.string, | |
651 | eh->got_addend); | |
cedb70c5 | 652 | |
90ace9e9 JT |
653 | } |
654 | } | |
655 | break; | |
656 | ||
657 | case R_VAX_PLT32: | |
658 | /* This symbol requires a procedure linkage table entry. We | |
659 | actually build the entry in adjust_dynamic_symbol, | |
660 | because this might be a case of linking PIC code which is | |
661 | never referenced by a dynamic object, in which case we | |
662 | don't need to generate a procedure linkage table entry | |
663 | after all. */ | |
664 | ||
665 | /* If this is a local symbol, we resolve it directly without | |
666 | creating a procedure linkage table entry. */ | |
667 | if (h == NULL) | |
668 | continue; | |
669 | ||
f5385ebf | 670 | h->needs_plt = 1; |
90ace9e9 JT |
671 | if (h->plt.refcount == -1) |
672 | h->plt.refcount = 1; | |
673 | else | |
674 | h->plt.refcount++; | |
675 | break; | |
676 | ||
677 | case R_VAX_PC8: | |
678 | case R_VAX_PC16: | |
679 | case R_VAX_PC32: | |
680 | /* If we are creating a shared library and this is not a local | |
681 | symbol, we need to copy the reloc into the shared library. | |
682 | However when linking with -Bsymbolic and this is a global | |
683 | symbol which is defined in an object we are including in the | |
684 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
685 | reloc directly. At this point we have not seen all the input | |
686 | files, so it is possible that DEF_REGULAR is not set now but | |
687 | will be set later (it is never cleared). We account for that | |
688 | possibility below by storing information in the | |
689 | pcrel_relocs_copied field of the hash table entry. */ | |
690 | if (!(info->shared | |
691 | && (sec->flags & SEC_ALLOC) != 0 | |
692 | && h != NULL | |
693 | && (!info->symbolic | |
f5385ebf | 694 | || !h->def_regular))) |
90ace9e9 JT |
695 | { |
696 | if (h != NULL) | |
697 | { | |
698 | /* Make sure a plt entry is created for this symbol if | |
699 | it turns out to be a function defined by a dynamic | |
700 | object. */ | |
701 | if (h->plt.refcount == -1) | |
702 | h->plt.refcount = 1; | |
703 | else | |
704 | h->plt.refcount++; | |
705 | } | |
706 | break; | |
707 | } | |
708 | /* Fall through. */ | |
709 | case R_VAX_8: | |
710 | case R_VAX_16: | |
711 | case R_VAX_32: | |
712 | if (h != NULL) | |
713 | { | |
714 | /* Make sure a plt entry is created for this symbol if it | |
715 | turns out to be a function defined by a dynamic object. */ | |
716 | if (h->plt.refcount == -1) | |
717 | h->plt.refcount = 1; | |
718 | else | |
719 | h->plt.refcount++; | |
720 | } | |
721 | ||
722 | /* If we are creating a shared library, we need to copy the | |
723 | reloc into the shared library. */ | |
724 | if (info->shared | |
725 | && (sec->flags & SEC_ALLOC) != 0) | |
726 | { | |
727 | /* When creating a shared object, we must copy these | |
728 | reloc types into the output file. We create a reloc | |
729 | section in dynobj and make room for this reloc. */ | |
730 | if (sreloc == NULL) | |
731 | { | |
732 | const char *name; | |
733 | ||
734 | name = (bfd_elf_string_from_elf_section | |
735 | (abfd, | |
736 | elf_elfheader (abfd)->e_shstrndx, | |
737 | elf_section_data (sec)->rel_hdr.sh_name)); | |
738 | if (name == NULL) | |
b34976b6 | 739 | return FALSE; |
90ace9e9 JT |
740 | |
741 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
742 | && strcmp (bfd_get_section_name (abfd, sec), | |
743 | name + 5) == 0); | |
744 | ||
745 | sreloc = bfd_get_section_by_name (dynobj, name); | |
746 | if (sreloc == NULL) | |
747 | { | |
3496cb2a L |
748 | sreloc = bfd_make_section_with_flags (dynobj, |
749 | name, | |
750 | (SEC_ALLOC | |
751 | | SEC_LOAD | |
752 | | SEC_HAS_CONTENTS | |
753 | | SEC_IN_MEMORY | |
754 | | SEC_LINKER_CREATED | |
755 | | SEC_READONLY)); | |
90ace9e9 | 756 | if (sreloc == NULL |
90ace9e9 | 757 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 758 | return FALSE; |
90ace9e9 JT |
759 | } |
760 | if (sec->flags & SEC_READONLY) | |
761 | info->flags |= DF_TEXTREL; | |
762 | } | |
763 | ||
eea6121a | 764 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
765 | |
766 | /* If we are linking with -Bsymbolic, we count the number of | |
767 | PC relative relocations we have entered for this symbol, | |
768 | so that we can discard them again if the symbol is later | |
769 | defined by a regular object. Note that this function is | |
19852a2a | 770 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
771 | which means that h is really a pointer to an |
772 | elf_vax_link_hash_entry. */ | |
773 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
774 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
775 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
776 | && info->symbolic) |
777 | { | |
778 | struct elf_vax_link_hash_entry *eh; | |
779 | struct elf_vax_pcrel_relocs_copied *p; | |
780 | ||
781 | eh = (struct elf_vax_link_hash_entry *) h; | |
782 | ||
783 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
784 | if (p->section == sreloc) | |
785 | break; | |
786 | ||
787 | if (p == NULL) | |
788 | { | |
789 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
790 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
791 | if (p == NULL) | |
b34976b6 | 792 | return FALSE; |
90ace9e9 JT |
793 | p->next = eh->pcrel_relocs_copied; |
794 | eh->pcrel_relocs_copied = p; | |
795 | p->section = sreloc; | |
796 | p->count = 0; | |
797 | } | |
798 | ||
799 | ++p->count; | |
800 | } | |
801 | } | |
802 | ||
803 | break; | |
804 | ||
805 | /* This relocation describes the C++ object vtable hierarchy. | |
806 | Reconstruct it for later use during GC. */ | |
807 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 808 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 809 | return FALSE; |
90ace9e9 JT |
810 | break; |
811 | ||
812 | /* This relocation describes which C++ vtable entries are actually | |
813 | used. Record for later use during GC. */ | |
814 | case R_VAX_GNU_VTENTRY: | |
c152c796 | 815 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 816 | return FALSE; |
90ace9e9 JT |
817 | break; |
818 | ||
819 | default: | |
820 | break; | |
821 | } | |
822 | } | |
823 | ||
b34976b6 | 824 | return TRUE; |
90ace9e9 JT |
825 | } |
826 | ||
827 | /* Return the section that should be marked against GC for a given | |
828 | relocation. */ | |
829 | ||
830 | static asection * | |
ce71b576 NC |
831 | elf_vax_gc_mark_hook (asection *sec, |
832 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
833 | Elf_Internal_Rela *rel, | |
834 | struct elf_link_hash_entry *h, | |
835 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
836 | { |
837 | if (h != NULL) | |
838 | { | |
839 | switch (ELF32_R_TYPE (rel->r_info)) | |
840 | { | |
841 | case R_VAX_GNU_VTINHERIT: | |
842 | case R_VAX_GNU_VTENTRY: | |
843 | break; | |
844 | ||
845 | default: | |
846 | switch (h->root.type) | |
847 | { | |
848 | default: | |
849 | break; | |
850 | ||
851 | case bfd_link_hash_defined: | |
852 | case bfd_link_hash_defweak: | |
853 | return h->root.u.def.section; | |
854 | ||
855 | case bfd_link_hash_common: | |
856 | return h->root.u.c.p->section; | |
857 | } | |
858 | } | |
859 | } | |
860 | else | |
1e2f5b6e | 861 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
90ace9e9 JT |
862 | |
863 | return NULL; | |
864 | } | |
865 | ||
866 | /* Update the got entry reference counts for the section being removed. */ | |
867 | ||
b34976b6 | 868 | static bfd_boolean |
ce71b576 NC |
869 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
870 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
871 | { |
872 | Elf_Internal_Shdr *symtab_hdr; | |
873 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 874 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 875 | bfd *dynobj; |
90ace9e9 | 876 | |
90ace9e9 JT |
877 | dynobj = elf_hash_table (info)->dynobj; |
878 | if (dynobj == NULL) | |
b34976b6 | 879 | return TRUE; |
90ace9e9 | 880 | |
babfd660 KH |
881 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
882 | sym_hashes = elf_sym_hashes (abfd); | |
883 | ||
90ace9e9 JT |
884 | relend = relocs + sec->reloc_count; |
885 | for (rel = relocs; rel < relend; rel++) | |
886 | { | |
babfd660 | 887 | unsigned long r_symndx; |
3eb128b2 AM |
888 | struct elf_link_hash_entry *h = NULL; |
889 | ||
890 | r_symndx = ELF32_R_SYM (rel->r_info); | |
891 | if (r_symndx >= symtab_hdr->sh_info) | |
892 | { | |
893 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
894 | while (h->root.type == bfd_link_hash_indirect | |
895 | || h->root.type == bfd_link_hash_warning) | |
896 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
897 | } | |
babfd660 | 898 | |
90ace9e9 JT |
899 | switch (ELF32_R_TYPE (rel->r_info)) |
900 | { | |
901 | case R_VAX_GOT32: | |
3eb128b2 AM |
902 | if (h != NULL && h->got.refcount > 0) |
903 | --h->got.refcount; | |
90ace9e9 JT |
904 | break; |
905 | ||
906 | case R_VAX_PLT32: | |
907 | case R_VAX_PC8: | |
908 | case R_VAX_PC16: | |
909 | case R_VAX_PC32: | |
910 | case R_VAX_8: | |
911 | case R_VAX_16: | |
912 | case R_VAX_32: | |
3eb128b2 AM |
913 | if (h != NULL && h->plt.refcount > 0) |
914 | --h->plt.refcount; | |
90ace9e9 JT |
915 | break; |
916 | ||
917 | default: | |
918 | break; | |
919 | } | |
920 | } | |
921 | ||
b34976b6 | 922 | return TRUE; |
90ace9e9 JT |
923 | } |
924 | ||
925 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
926 | regular object. The current definition is in some section of the | |
927 | dynamic object, but we're not including those sections. We have to | |
928 | change the definition to something the rest of the link can | |
929 | understand. */ | |
930 | ||
b34976b6 | 931 | static bfd_boolean |
90ace9e9 JT |
932 | elf_vax_adjust_dynamic_symbol (info, h) |
933 | struct bfd_link_info *info; | |
934 | struct elf_link_hash_entry *h; | |
935 | { | |
936 | bfd *dynobj; | |
937 | asection *s; | |
938 | unsigned int power_of_two; | |
939 | ||
940 | dynobj = elf_hash_table (info)->dynobj; | |
941 | ||
942 | /* Make sure we know what is going on here. */ | |
943 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 944 | && (h->needs_plt |
f6e332e6 | 945 | || h->u.weakdef != NULL |
f5385ebf AM |
946 | || (h->def_dynamic |
947 | && h->ref_regular | |
948 | && !h->def_regular))); | |
90ace9e9 JT |
949 | |
950 | /* If this is a function, put it in the procedure linkage table. We | |
951 | will fill in the contents of the procedure linkage table later, | |
952 | when we know the address of the .got section. */ | |
953 | if (h->type == STT_FUNC | |
f5385ebf | 954 | || h->needs_plt) |
90ace9e9 JT |
955 | { |
956 | if (! info->shared | |
f5385ebf AM |
957 | && !h->def_dynamic |
958 | && !h->ref_dynamic | |
90ace9e9 JT |
959 | /* We must always create the plt entry if it was referenced |
960 | by a PLTxxO relocation. In this case we already recorded | |
961 | it as a dynamic symbol. */ | |
962 | && h->dynindx == -1) | |
963 | { | |
964 | /* This case can occur if we saw a PLTxx reloc in an input | |
965 | file, but the symbol was never referred to by a dynamic | |
966 | object. In such a case, we don't actually need to build | |
967 | a procedure linkage table, and we can just do a PCxx | |
968 | reloc instead. */ | |
f5385ebf | 969 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 970 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 971 | return TRUE; |
90ace9e9 JT |
972 | } |
973 | ||
974 | /* GC may have rendered this entry unused. */ | |
975 | if (h->plt.refcount <= 0) | |
976 | { | |
f5385ebf | 977 | h->needs_plt = 0; |
90ace9e9 | 978 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 979 | return TRUE; |
90ace9e9 JT |
980 | } |
981 | ||
982 | /* Make sure this symbol is output as a dynamic symbol. */ | |
983 | if (h->dynindx == -1) | |
984 | { | |
c152c796 | 985 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 986 | return FALSE; |
90ace9e9 JT |
987 | } |
988 | ||
989 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
990 | BFD_ASSERT (s != NULL); | |
991 | ||
992 | /* If this is the first .plt entry, make room for the special | |
993 | first entry. */ | |
eea6121a | 994 | if (s->size == 0) |
90ace9e9 | 995 | { |
eea6121a | 996 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
997 | } |
998 | ||
999 | /* If this symbol is not defined in a regular file, and we are | |
1000 | not generating a shared library, then set the symbol to this | |
1001 | location in the .plt. This is required to make function | |
1002 | pointers compare as equal between the normal executable and | |
1003 | the shared library. */ | |
1004 | if (!info->shared | |
f5385ebf | 1005 | && !h->def_regular) |
90ace9e9 JT |
1006 | { |
1007 | h->root.u.def.section = s; | |
eea6121a | 1008 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1009 | } |
1010 | ||
eea6121a | 1011 | h->plt.offset = s->size; |
90ace9e9 JT |
1012 | |
1013 | /* Make room for this entry. */ | |
eea6121a | 1014 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1015 | |
1016 | /* We also need to make an entry in the .got.plt section, which | |
1017 | will be placed in the .got section by the linker script. */ | |
1018 | ||
1019 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1020 | BFD_ASSERT (s != NULL); | |
eea6121a | 1021 | s->size += 4; |
90ace9e9 JT |
1022 | |
1023 | /* We also need to make an entry in the .rela.plt section. */ | |
1024 | ||
1025 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1026 | BFD_ASSERT (s != NULL); | |
eea6121a | 1027 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1028 | |
b34976b6 | 1029 | return TRUE; |
90ace9e9 JT |
1030 | } |
1031 | ||
1032 | /* Reinitialize the plt offset now that it is not used as a reference | |
1033 | count any more. */ | |
1034 | h->plt.offset = (bfd_vma) -1; | |
1035 | ||
1036 | /* If this is a weak symbol, and there is a real definition, the | |
1037 | processor independent code will have arranged for us to see the | |
1038 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1039 | if (h->u.weakdef != NULL) |
90ace9e9 | 1040 | { |
f6e332e6 AM |
1041 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1042 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1043 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1044 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1045 | return TRUE; |
90ace9e9 JT |
1046 | } |
1047 | ||
1048 | /* This is a reference to a symbol defined by a dynamic object which | |
1049 | is not a function. */ | |
1050 | ||
1051 | /* If we are creating a shared library, we must presume that the | |
1052 | only references to the symbol are via the global offset table. | |
1053 | For such cases we need not do anything here; the relocations will | |
1054 | be handled correctly by relocate_section. */ | |
1055 | if (info->shared) | |
b34976b6 | 1056 | return TRUE; |
90ace9e9 | 1057 | |
909272ee AM |
1058 | if (h->size == 0) |
1059 | { | |
1060 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1061 | h->root.root.string); | |
1062 | return TRUE; | |
1063 | } | |
1064 | ||
90ace9e9 JT |
1065 | /* We must allocate the symbol in our .dynbss section, which will |
1066 | become part of the .bss section of the executable. There will be | |
1067 | an entry for this symbol in the .dynsym section. The dynamic | |
1068 | object will contain position independent code, so all references | |
1069 | from the dynamic object to this symbol will go through the global | |
1070 | offset table. The dynamic linker will use the .dynsym entry to | |
1071 | determine the address it must put in the global offset table, so | |
1072 | both the dynamic object and the regular object will refer to the | |
1073 | same memory location for the variable. */ | |
1074 | ||
1075 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1076 | BFD_ASSERT (s != NULL); | |
1077 | ||
1078 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1079 | copy the initial value out of the dynamic object and into the | |
1080 | runtime process image. We need to remember the offset into the | |
1081 | .rela.bss section we are going to use. */ | |
1082 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1083 | { | |
1084 | asection *srel; | |
1085 | ||
1086 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1087 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1088 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1089 | h->needs_copy = 1; |
90ace9e9 JT |
1090 | } |
1091 | ||
1092 | /* We need to figure out the alignment required for this symbol. I | |
1093 | have no idea how ELF linkers handle this. */ | |
1094 | power_of_two = bfd_log2 (h->size); | |
1095 | if (power_of_two > 3) | |
1096 | power_of_two = 3; | |
1097 | ||
1098 | /* Apply the required alignment. */ | |
eea6121a | 1099 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
90ace9e9 JT |
1100 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1101 | { | |
1102 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1103 | return FALSE; |
90ace9e9 JT |
1104 | } |
1105 | ||
1106 | /* Define the symbol as being at this point in the section. */ | |
1107 | h->root.u.def.section = s; | |
eea6121a | 1108 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1109 | |
1110 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1111 | s->size += h->size; |
90ace9e9 | 1112 | |
b34976b6 | 1113 | return TRUE; |
90ace9e9 JT |
1114 | } |
1115 | ||
1116 | /* Set the sizes of the dynamic sections. */ | |
1117 | ||
b34976b6 | 1118 | static bfd_boolean |
ce71b576 | 1119 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1120 | { |
1121 | bfd *dynobj; | |
1122 | asection *s; | |
b34976b6 AM |
1123 | bfd_boolean plt; |
1124 | bfd_boolean relocs; | |
1125 | bfd_boolean reltext; | |
90ace9e9 JT |
1126 | |
1127 | dynobj = elf_hash_table (info)->dynobj; | |
1128 | BFD_ASSERT (dynobj != NULL); | |
1129 | ||
1130 | if (elf_hash_table (info)->dynamic_sections_created) | |
1131 | { | |
1132 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1133 | if (info->executable) |
90ace9e9 JT |
1134 | { |
1135 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1136 | BFD_ASSERT (s != NULL); | |
eea6121a | 1137 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1138 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1139 | } | |
1140 | } | |
1141 | else | |
1142 | { | |
1143 | /* We may have created entries in the .rela.got and .got sections. | |
1144 | However, if we are not creating the dynamic sections, we will | |
1145 | not actually use these entries. Reset the size of .rela.got | |
1146 | and .got, which will cause it to get stripped from the output | |
1147 | file below. */ | |
1148 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1149 | if (s != NULL) | |
eea6121a | 1150 | s->size = 0; |
90ace9e9 JT |
1151 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1152 | if (s != NULL) | |
eea6121a | 1153 | s->size = 0; |
90ace9e9 JT |
1154 | s = bfd_get_section_by_name (dynobj, ".got"); |
1155 | if (s != NULL) | |
eea6121a | 1156 | s->size = 0; |
90ace9e9 JT |
1157 | } |
1158 | ||
1159 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1160 | relative relocs against symbols defined in a regular object. We | |
1161 | allocated space for them in the check_relocs routine, but we will not | |
1162 | fill them in in the relocate_section routine. */ | |
1163 | if (info->shared && info->symbolic) | |
1164 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba | 1165 | elf_vax_discard_copies, |
ce71b576 | 1166 | NULL); |
b29635ba | 1167 | |
b34976b6 | 1168 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1169 | discard all the got entries we've recorded. Otherwise, we need to |
1170 | instantiate (allocate space for them). */ | |
1171 | elf_link_hash_traverse (elf_hash_table (info), | |
1172 | elf_vax_instantiate_got_entries, | |
1173 | (PTR) info); | |
90ace9e9 JT |
1174 | |
1175 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1176 | determined the sizes of the various dynamic sections. Allocate | |
1177 | memory for them. */ | |
b34976b6 AM |
1178 | plt = FALSE; |
1179 | relocs = FALSE; | |
1180 | reltext = FALSE; | |
90ace9e9 JT |
1181 | for (s = dynobj->sections; s != NULL; s = s->next) |
1182 | { | |
1183 | const char *name; | |
90ace9e9 JT |
1184 | |
1185 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1186 | continue; | |
1187 | ||
1188 | /* It's OK to base decisions on the section name, because none | |
1189 | of the dynobj section names depend upon the input files. */ | |
1190 | name = bfd_get_section_name (dynobj, s); | |
1191 | ||
90ace9e9 JT |
1192 | if (strcmp (name, ".plt") == 0) |
1193 | { | |
c456f082 AM |
1194 | /* Remember whether there is a PLT. */ |
1195 | plt = s->size != 0; | |
90ace9e9 JT |
1196 | } |
1197 | else if (strncmp (name, ".rela", 5) == 0) | |
1198 | { | |
c456f082 | 1199 | if (s->size != 0) |
90ace9e9 JT |
1200 | { |
1201 | asection *target; | |
1202 | ||
1203 | /* Remember whether there are any reloc sections other | |
1204 | than .rela.plt. */ | |
1205 | if (strcmp (name, ".rela.plt") != 0) | |
1206 | { | |
1207 | const char *outname; | |
1208 | ||
b34976b6 | 1209 | relocs = TRUE; |
90ace9e9 JT |
1210 | |
1211 | /* If this relocation section applies to a read only | |
1212 | section, then we probably need a DT_TEXTREL | |
1213 | entry. .rela.plt is actually associated with | |
1214 | .got.plt, which is never readonly. */ | |
1215 | outname = bfd_get_section_name (output_bfd, | |
1216 | s->output_section); | |
1217 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1218 | if (target != NULL | |
1219 | && (target->flags & SEC_READONLY) != 0 | |
1220 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1221 | reltext = TRUE; |
90ace9e9 JT |
1222 | } |
1223 | ||
1224 | /* We use the reloc_count field as a counter if we need | |
1225 | to copy relocs into the output file. */ | |
1226 | s->reloc_count = 0; | |
1227 | } | |
1228 | } | |
c456f082 AM |
1229 | else if (strncmp (name, ".got", 4) != 0 |
1230 | && strcmp (name, ".dynbss") != 0) | |
90ace9e9 JT |
1231 | { |
1232 | /* It's not one of our sections, so don't allocate space. */ | |
1233 | continue; | |
1234 | } | |
1235 | ||
c456f082 | 1236 | if (s->size == 0) |
90ace9e9 | 1237 | { |
c456f082 AM |
1238 | /* If we don't need this section, strip it from the |
1239 | output file. This is mostly to handle .rela.bss and | |
1240 | .rela.plt. We must create both sections in | |
1241 | create_dynamic_sections, because they must be created | |
1242 | before the linker maps input sections to output | |
1243 | sections. The linker does that before | |
1244 | adjust_dynamic_symbol is called, and it is that | |
1245 | function which decides whether anything needs to go | |
1246 | into these sections. */ | |
8423293d | 1247 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1248 | continue; |
1249 | } | |
1250 | ||
c456f082 AM |
1251 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1252 | continue; | |
1253 | ||
90ace9e9 | 1254 | /* Allocate memory for the section contents. */ |
eea6121a | 1255 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1256 | if (s->contents == NULL) |
b34976b6 | 1257 | return FALSE; |
90ace9e9 JT |
1258 | } |
1259 | ||
1260 | if (elf_hash_table (info)->dynamic_sections_created) | |
1261 | { | |
1262 | /* Add some entries to the .dynamic section. We fill in the | |
1263 | values later, in elf_vax_finish_dynamic_sections, but we | |
1264 | must add the entries now so that we get the correct size for | |
1265 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1266 | dynamic linker and used by the debugger. */ | |
1267 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1268 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1269 | |
1270 | if (!info->shared) | |
1271 | { | |
1272 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1273 | return FALSE; |
90ace9e9 JT |
1274 | } |
1275 | ||
1276 | if (plt) | |
1277 | { | |
1278 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1279 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1280 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1281 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1282 | return FALSE; |
90ace9e9 JT |
1283 | } |
1284 | ||
1285 | if (relocs) | |
1286 | { | |
1287 | if (!add_dynamic_entry (DT_RELA, 0) | |
1288 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1289 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1290 | return FALSE; |
90ace9e9 JT |
1291 | } |
1292 | ||
1293 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1294 | { | |
1295 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1296 | return FALSE; |
90ace9e9 JT |
1297 | } |
1298 | } | |
1299 | #undef add_dynamic_entry | |
1300 | ||
b34976b6 | 1301 | return TRUE; |
90ace9e9 JT |
1302 | } |
1303 | ||
1304 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1305 | creating a shared object with -Bsymbolic. It discards the space | |
1306 | allocated to copy PC relative relocs against symbols which are defined | |
1307 | in regular objects. We allocated space for them in the check_relocs | |
1308 | routine, but we won't fill them in in the relocate_section routine. */ | |
1309 | ||
b34976b6 | 1310 | static bfd_boolean |
ce71b576 NC |
1311 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
1312 | PTR ignore ATTRIBUTE_UNUSED) | |
90ace9e9 JT |
1313 | { |
1314 | struct elf_vax_pcrel_relocs_copied *s; | |
1315 | ||
1316 | if (h->root.root.type == bfd_link_hash_warning) | |
1317 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1318 | ||
1319 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1320 | if (!h->root.def_regular) |
b34976b6 | 1321 | return TRUE; |
90ace9e9 JT |
1322 | |
1323 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1324 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1325 | |
b34976b6 | 1326 | return TRUE; |
90ace9e9 JT |
1327 | } |
1328 | ||
b29635ba JT |
1329 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1330 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1331 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1332 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1333 | creating a shared object or executable, space in the .got and .rela.got | |
1334 | will be reserved for the symbol. */ | |
1335 | ||
b34976b6 | 1336 | static bfd_boolean |
ce71b576 | 1337 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, PTR infoptr) |
b29635ba JT |
1338 | { |
1339 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1340 | bfd *dynobj; | |
1341 | asection *sgot; | |
1342 | asection *srelgot; | |
b34976b6 | 1343 | |
b29635ba JT |
1344 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1345 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1346 | return TRUE; |
b29635ba JT |
1347 | |
1348 | dynobj = elf_hash_table (info)->dynobj; | |
1349 | if (dynobj == NULL) | |
b34976b6 | 1350 | return TRUE; |
b29635ba JT |
1351 | |
1352 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1353 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1354 | ||
1355 | if (!elf_hash_table (info)->dynamic_sections_created | |
1356 | || (info->shared && info->symbolic)) | |
1357 | { | |
1358 | h->got.refcount = 0; | |
1359 | h->got.offset = (bfd_vma) -1; | |
1360 | h->plt.refcount = 0; | |
1361 | h->plt.offset = (bfd_vma) -1; | |
1362 | } | |
1363 | else if (h->got.refcount > 0) | |
1364 | { | |
1365 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1366 | if (h->dynindx == -1) | |
1367 | { | |
c152c796 | 1368 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1369 | return FALSE; |
b29635ba JT |
1370 | } |
1371 | ||
1372 | /* Allocate space in the .got and .rela.got sections. */ | |
eea6121a AM |
1373 | sgot->size += 4; |
1374 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1375 | } |
1376 | ||
b34976b6 | 1377 | return TRUE; |
b29635ba JT |
1378 | } |
1379 | ||
90ace9e9 JT |
1380 | /* Relocate an VAX ELF section. */ |
1381 | ||
b34976b6 | 1382 | static bfd_boolean |
ce71b576 NC |
1383 | elf_vax_relocate_section (bfd *output_bfd, |
1384 | struct bfd_link_info *info, | |
1385 | bfd *input_bfd, | |
1386 | asection *input_section, | |
1387 | bfd_byte *contents, | |
1388 | Elf_Internal_Rela *relocs, | |
1389 | Elf_Internal_Sym *local_syms, | |
1390 | asection **local_sections) | |
90ace9e9 JT |
1391 | { |
1392 | bfd *dynobj; | |
1393 | Elf_Internal_Shdr *symtab_hdr; | |
1394 | struct elf_link_hash_entry **sym_hashes; | |
1395 | bfd_vma *local_got_offsets; | |
1396 | bfd_vma plt_index; | |
1397 | bfd_vma got_offset; | |
1398 | asection *sgot; | |
1399 | asection *splt; | |
1400 | asection *sgotplt; | |
1401 | asection *sreloc; | |
1402 | Elf_Internal_Rela *rel; | |
1403 | Elf_Internal_Rela *relend; | |
1404 | ||
1049f94e | 1405 | if (info->relocatable) |
b34976b6 | 1406 | return TRUE; |
f0fe0e16 | 1407 | |
90ace9e9 JT |
1408 | dynobj = elf_hash_table (info)->dynobj; |
1409 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1410 | sym_hashes = elf_sym_hashes (input_bfd); | |
1411 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1412 | ||
1413 | sgot = NULL; | |
1414 | splt = NULL; | |
1415 | sgotplt = NULL; | |
1416 | sreloc = NULL; | |
1417 | ||
1418 | rel = relocs; | |
1419 | relend = relocs + input_section->reloc_count; | |
1420 | for (; rel < relend; rel++) | |
1421 | { | |
1422 | int r_type; | |
1423 | reloc_howto_type *howto; | |
1424 | unsigned long r_symndx; | |
1425 | struct elf_link_hash_entry *h; | |
1426 | Elf_Internal_Sym *sym; | |
1427 | asection *sec; | |
1428 | bfd_vma relocation; | |
1429 | bfd_reloc_status_type r; | |
1430 | ||
1431 | r_type = ELF32_R_TYPE (rel->r_info); | |
1432 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1433 | { | |
1434 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1435 | return FALSE; |
90ace9e9 JT |
1436 | } |
1437 | howto = howto_table + r_type; | |
1438 | ||
90ace9e9 | 1439 | /* This is a final link. */ |
f0fe0e16 | 1440 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1441 | h = NULL; |
1442 | sym = NULL; | |
1443 | sec = NULL; | |
1444 | if (r_symndx < symtab_hdr->sh_info) | |
1445 | { | |
1446 | sym = local_syms + r_symndx; | |
1447 | sec = local_sections[r_symndx]; | |
8517fae7 | 1448 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1449 | } |
1450 | else | |
1451 | { | |
560e09e9 NC |
1452 | bfd_boolean unresolved_reloc; |
1453 | bfd_boolean warned; | |
1454 | ||
b2a8e766 AM |
1455 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1456 | r_symndx, symtab_hdr, sym_hashes, | |
1457 | h, sec, relocation, | |
1458 | unresolved_reloc, warned); | |
ce71b576 | 1459 | |
560e09e9 | 1460 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1461 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1462 | && ((r_type == R_VAX_PLT32 |
90ace9e9 JT |
1463 | && h->plt.offset != (bfd_vma) -1 |
1464 | && elf_hash_table (info)->dynamic_sections_created) | |
1465 | || (r_type == R_VAX_GOT32 | |
1466 | && strcmp (h->root.root.string, | |
1467 | "_GLOBAL_OFFSET_TABLE_") != 0 | |
1468 | && elf_hash_table (info)->dynamic_sections_created | |
1469 | && (! info->shared | |
1470 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1471 | || !h->def_regular)) |
90ace9e9 JT |
1472 | || (info->shared |
1473 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1474 | || !h->def_regular) |
90ace9e9 JT |
1475 | && ((input_section->flags & SEC_ALLOC) != 0 |
1476 | /* DWARF will emit R_VAX_32 relocations in its | |
1477 | sections against symbols defined externally | |
1478 | in shared libraries. We can't do anything | |
1479 | with them here. */ | |
1480 | ||
1481 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1482 | && h->def_dynamic)) |
90ace9e9 JT |
1483 | && (r_type == R_VAX_8 |
1484 | || r_type == R_VAX_16 | |
1485 | || r_type == R_VAX_32 | |
1486 | || r_type == R_VAX_PC8 | |
1487 | || r_type == R_VAX_PC16 | |
560e09e9 NC |
1488 | || r_type == R_VAX_PC32)))) |
1489 | /* In these cases, we don't need the relocation | |
1490 | value. We check specially because in some | |
1491 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1492 | relocation = 0; |
90ace9e9 JT |
1493 | } |
1494 | ||
1495 | switch (r_type) | |
1496 | { | |
1497 | case R_VAX_GOT32: | |
1498 | /* Relocation is to the address of the entry for this symbol | |
1499 | in the global offset table. */ | |
b29635ba | 1500 | if (h == NULL || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1501 | break; |
1502 | ||
1503 | /* Relocation is the offset of the entry for this symbol in | |
1504 | the global offset table. */ | |
1505 | ||
1506 | { | |
1507 | bfd_vma off; | |
1508 | ||
90ace9e9 JT |
1509 | if (sgot == NULL) |
1510 | { | |
1511 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1512 | BFD_ASSERT (sgot != NULL); | |
1513 | } | |
1514 | ||
1515 | BFD_ASSERT (h != NULL); | |
1516 | off = h->got.offset; | |
1517 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1518 | BFD_ASSERT (off < sgot->size); |
90ace9e9 JT |
1519 | |
1520 | if (info->shared | |
1521 | && h->dynindx == -1 | |
f5385ebf | 1522 | && h->def_regular) |
90ace9e9 JT |
1523 | { |
1524 | /* The symbol was forced to be local | |
1525 | because of a version file.. We must initialize | |
1526 | this entry in the global offset table. Since | |
1527 | the offset must always be a multiple of 4, we | |
1528 | use the least significant bit to record whether | |
1529 | we have initialized it already. | |
1530 | ||
1531 | When doing a dynamic link, we create a .rela.got | |
1532 | relocation entry to initialize the value. This | |
1533 | is done in the finish_dynamic_symbol routine. */ | |
1534 | if ((off & 1) != 0) | |
1535 | off &= ~1; | |
1536 | else | |
1537 | { | |
1538 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1539 | sgot->contents + off); | |
1540 | h->got.offset |= 1; | |
1541 | } | |
1542 | } else { | |
1543 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1544 | } | |
1545 | ||
1546 | relocation = sgot->output_offset + off; | |
b29635ba | 1547 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1548 | rel->r_addend = 0; |
1549 | ||
b29635ba JT |
1550 | /* Change the reference to be indirect. */ |
1551 | contents[rel->r_offset - 1] |= 0x10; | |
1552 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1553 | } |
1554 | break; | |
1555 | ||
1556 | case R_VAX_PLT32: | |
1557 | /* Relocation is to the entry for this symbol in the | |
1558 | procedure linkage table. */ | |
1559 | ||
1560 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1561 | without using the procedure linkage table. */ | |
1562 | if (h == NULL) | |
1563 | break; | |
1564 | ||
1565 | if (h->plt.offset == (bfd_vma) -1 | |
1566 | || !elf_hash_table (info)->dynamic_sections_created) | |
1567 | { | |
1568 | /* We didn't make a PLT entry for this symbol. This | |
1569 | happens when statically linking PIC code, or when | |
1570 | using -Bsymbolic. */ | |
1571 | break; | |
1572 | } | |
1573 | ||
1574 | if (splt == NULL) | |
1575 | { | |
1576 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1577 | BFD_ASSERT (splt != NULL); | |
1578 | } | |
1579 | ||
1580 | if (sgotplt == NULL) | |
1581 | { | |
1582 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1583 | BFD_ASSERT (splt != NULL); | |
1584 | } | |
1585 | ||
1586 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1587 | ||
1588 | /* Get the offset into the .got table of the entry that | |
1589 | corresponds to this function. Each .got entry is 4 bytes. | |
1590 | The first two are reserved. */ | |
1591 | got_offset = (plt_index + 3) * 4; | |
1592 | ||
1593 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1594 | of the plt itself. */ |
90ace9e9 JT |
1595 | relocation = (sgotplt->output_section->vma |
1596 | + sgotplt->output_offset | |
1597 | + got_offset); | |
1598 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1599 | if (rel->r_addend == 2) | |
1600 | { | |
1601 | h->plt.offset |= 1; | |
1602 | } | |
1603 | else if (rel->r_addend != 0) | |
1604 | (*_bfd_error_handler) | |
1605 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1606 | bfd_get_filename (input_bfd), rel->r_addend, | |
1607 | h->root.root.string, | |
1608 | bfd_get_section_name (input_bfd, input_section)); | |
1609 | rel->r_addend = 0; | |
1610 | ||
1611 | break; | |
1612 | ||
1613 | case R_VAX_PC8: | |
1614 | case R_VAX_PC16: | |
1615 | case R_VAX_PC32: | |
1616 | if (h == NULL) | |
1617 | break; | |
1618 | /* Fall through. */ | |
1619 | case R_VAX_8: | |
1620 | case R_VAX_16: | |
1621 | case R_VAX_32: | |
1622 | if (info->shared | |
1623 | && r_symndx != 0 | |
1624 | && (input_section->flags & SEC_ALLOC) != 0 | |
1625 | && ((r_type != R_VAX_PC8 | |
1626 | && r_type != R_VAX_PC16 | |
1627 | && r_type != R_VAX_PC32) | |
1628 | || (!info->symbolic | |
f5385ebf | 1629 | || !h->def_regular))) |
90ace9e9 JT |
1630 | { |
1631 | Elf_Internal_Rela outrel; | |
947216bf | 1632 | bfd_byte *loc; |
b34976b6 | 1633 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1634 | |
1635 | /* When generating a shared object, these relocations | |
1636 | are copied into the output file to be resolved at run | |
1637 | time. */ | |
90ace9e9 JT |
1638 | if (sreloc == NULL) |
1639 | { | |
1640 | const char *name; | |
1641 | ||
1642 | name = (bfd_elf_string_from_elf_section | |
1643 | (input_bfd, | |
1644 | elf_elfheader (input_bfd)->e_shstrndx, | |
1645 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1646 | if (name == NULL) | |
b34976b6 | 1647 | return FALSE; |
90ace9e9 JT |
1648 | |
1649 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1650 | && strcmp (bfd_get_section_name (input_bfd, | |
1651 | input_section), | |
1652 | name + 5) == 0); | |
1653 | ||
1654 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1655 | BFD_ASSERT (sreloc != NULL); | |
1656 | } | |
1657 | ||
b34976b6 AM |
1658 | skip = FALSE; |
1659 | relocate = FALSE; | |
90ace9e9 JT |
1660 | |
1661 | outrel.r_offset = | |
1662 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1663 | rel->r_offset); | |
1664 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1665 | skip = TRUE; |
90ace9e9 | 1666 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1667 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1668 | outrel.r_offset += (input_section->output_section->vma |
1669 | + input_section->output_offset); | |
1670 | ||
1671 | if (skip) | |
1672 | memset (&outrel, 0, sizeof outrel); | |
1673 | /* h->dynindx may be -1 if the symbol was marked to | |
1674 | become local. */ | |
1675 | else if (h != NULL | |
1676 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1677 | || !h->def_regular)) |
90ace9e9 JT |
1678 | { |
1679 | BFD_ASSERT (h->dynindx != -1); | |
1680 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1681 | outrel.r_addend = relocation + rel->r_addend; | |
1682 | } | |
1683 | else | |
1684 | { | |
1685 | if (r_type == R_VAX_32) | |
1686 | { | |
b34976b6 | 1687 | relocate = TRUE; |
90ace9e9 JT |
1688 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1689 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1690 | &contents[rel->r_offset]) == 0); | |
1691 | outrel.r_addend = relocation + rel->r_addend; | |
1692 | } | |
1693 | else | |
1694 | { | |
1695 | long indx; | |
1696 | ||
8517fae7 | 1697 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1698 | indx = 0; |
1699 | else if (sec == NULL || sec->owner == NULL) | |
1700 | { | |
1701 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1702 | return FALSE; |
90ace9e9 JT |
1703 | } |
1704 | else | |
1705 | { | |
1706 | asection *osec; | |
1707 | ||
1708 | osec = sec->output_section; | |
1709 | indx = elf_section_data (osec)->dynindx; | |
1710 | BFD_ASSERT (indx > 0); | |
1711 | } | |
1712 | ||
1713 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1714 | outrel.r_addend = relocation + rel->r_addend; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1719 | ".text") != 0 || |
90ace9e9 JT |
1720 | (info->shared |
1721 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1722 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1723 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1724 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1725 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1726 | { | |
1727 | if (h != NULL) | |
1728 | (*_bfd_error_handler) | |
1729 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1730 | bfd_get_filename (input_bfd), howto->name, | |
1731 | h->root.root.string, | |
1732 | bfd_get_section_name (input_bfd, input_section)); | |
1733 | else | |
1734 | (*_bfd_error_handler) | |
1735 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1736 | bfd_get_filename (input_bfd), howto->name, | |
1737 | outrel.r_addend, | |
1738 | bfd_get_section_name (input_bfd, input_section)); | |
1739 | } | |
947216bf AM |
1740 | loc = sreloc->contents; |
1741 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1742 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1743 | |
1744 | /* This reloc will be computed at runtime, so there's no | |
1745 | need to do anything now, except for R_VAX_32 | |
1746 | relocations that have been turned into | |
1747 | R_VAX_RELATIVE. */ | |
1748 | if (!relocate) | |
1749 | continue; | |
1750 | } | |
1751 | ||
1752 | break; | |
1753 | ||
1754 | case R_VAX_GNU_VTINHERIT: | |
1755 | case R_VAX_GNU_VTENTRY: | |
1756 | /* These are no-ops in the end. */ | |
1757 | continue; | |
1758 | ||
1759 | default: | |
1760 | break; | |
1761 | } | |
1762 | ||
b34976b6 | 1763 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1764 | So subtract the difference from the relocation amount since we can't |
1765 | add it to the offset. */ | |
90ace9e9 | 1766 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1767 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1768 | |
1769 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1770 | contents, rel->r_offset, | |
1771 | relocation, rel->r_addend); | |
1772 | ||
1773 | if (r != bfd_reloc_ok) | |
1774 | { | |
1775 | switch (r) | |
1776 | { | |
1777 | default: | |
1778 | case bfd_reloc_outofrange: | |
1779 | abort (); | |
1780 | case bfd_reloc_overflow: | |
1781 | { | |
1782 | const char *name; | |
1783 | ||
1784 | if (h != NULL) | |
dfeffb9f | 1785 | name = NULL; |
90ace9e9 JT |
1786 | else |
1787 | { | |
1788 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1789 | symtab_hdr->sh_link, | |
1790 | sym->st_name); | |
1791 | if (name == NULL) | |
b34976b6 | 1792 | return FALSE; |
90ace9e9 JT |
1793 | if (*name == '\0') |
1794 | name = bfd_section_name (input_bfd, sec); | |
1795 | } | |
1796 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1797 | (info, (h ? &h->root : NULL), name, howto->name, |
1798 | (bfd_vma) 0, input_bfd, input_section, | |
1799 | rel->r_offset))) | |
b34976b6 | 1800 | return FALSE; |
90ace9e9 JT |
1801 | } |
1802 | break; | |
1803 | } | |
1804 | } | |
1805 | } | |
1806 | ||
b34976b6 | 1807 | return TRUE; |
90ace9e9 JT |
1808 | } |
1809 | ||
1810 | /* Finish up dynamic symbol handling. We set the contents of various | |
1811 | dynamic sections here. */ | |
1812 | ||
b34976b6 | 1813 | static bfd_boolean |
ce71b576 NC |
1814 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1815 | struct elf_link_hash_entry *h, | |
1816 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1817 | { |
1818 | bfd *dynobj; | |
1819 | ||
1820 | dynobj = elf_hash_table (info)->dynobj; | |
1821 | ||
1822 | if (h->plt.offset != (bfd_vma) -1) | |
1823 | { | |
1824 | asection *splt; | |
1825 | asection *sgot; | |
1826 | asection *srela; | |
1827 | bfd_vma plt_index; | |
1828 | bfd_vma got_offset; | |
1829 | bfd_vma addend; | |
1830 | Elf_Internal_Rela rela; | |
947216bf | 1831 | bfd_byte *loc; |
90ace9e9 JT |
1832 | |
1833 | /* This symbol has an entry in the procedure linkage table. Set | |
1834 | it up. */ | |
90ace9e9 JT |
1835 | BFD_ASSERT (h->dynindx != -1); |
1836 | ||
1837 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1838 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1839 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1840 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1841 | ||
1842 | addend = 2 * (h->plt.offset & 1); | |
1843 | h->plt.offset &= ~1; | |
1844 | ||
1845 | /* Get the index in the procedure linkage table which | |
1846 | corresponds to this symbol. This is the index of this symbol | |
1847 | in all the symbols for which we are making plt entries. The | |
1848 | first entry in the procedure linkage table is reserved. */ | |
1849 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1850 | ||
1851 | /* Get the offset into the .got table of the entry that | |
1852 | corresponds to this function. Each .got entry is 4 bytes. | |
1853 | The first two are reserved. */ | |
1854 | got_offset = (plt_index + 3) * 4; | |
1855 | ||
1856 | /* Fill in the entry in the procedure linkage table. */ | |
1857 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1858 | PLT_ENTRY_SIZE); | |
1859 | ||
1860 | /* The offset is relative to the first extension word. */ | |
1861 | bfd_put_32 (output_bfd, | |
1862 | -(h->plt.offset + 8), | |
1863 | splt->contents + h->plt.offset + 4); | |
1864 | ||
1865 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1866 | splt->contents + h->plt.offset + 8); | |
1867 | ||
1868 | /* Fill in the entry in the global offset table. */ | |
1869 | bfd_put_32 (output_bfd, | |
1870 | (splt->output_section->vma | |
1871 | + splt->output_offset | |
1872 | + h->plt.offset) + addend, | |
1873 | sgot->contents + got_offset); | |
1874 | ||
1875 | /* Fill in the entry in the .rela.plt section. */ | |
1876 | rela.r_offset = (sgot->output_section->vma | |
1877 | + sgot->output_offset | |
1878 | + got_offset); | |
1879 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1880 | rela.r_addend = addend; | |
947216bf AM |
1881 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1882 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1883 | |
f5385ebf | 1884 | if (!h->def_regular) |
90ace9e9 JT |
1885 | { |
1886 | /* Mark the symbol as undefined, rather than as defined in | |
1887 | the .plt section. Leave the value alone. */ | |
1888 | sym->st_shndx = SHN_UNDEF; | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | if (h->got.offset != (bfd_vma) -1) | |
1893 | { | |
1894 | asection *sgot; | |
1895 | asection *srela; | |
1896 | Elf_Internal_Rela rela; | |
947216bf | 1897 | bfd_byte *loc; |
90ace9e9 JT |
1898 | |
1899 | /* This symbol has an entry in the global offset table. Set it | |
1900 | up. */ | |
90ace9e9 JT |
1901 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1902 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1903 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1904 | ||
1905 | rela.r_offset = (sgot->output_section->vma | |
1906 | + sgot->output_offset | |
1907 | + (h->got.offset &~ 1)); | |
1908 | ||
1909 | /* If the symbol was forced to be local because of a version file | |
1910 | locally we just want to emit a RELATIVE reloc. The entry in | |
1911 | the global offset table will already have been initialized in | |
1912 | the relocate_section function. */ | |
1913 | if (info->shared | |
1914 | && h->dynindx == -1 | |
f5385ebf | 1915 | && h->def_regular) |
90ace9e9 JT |
1916 | { |
1917 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1918 | } | |
1919 | else | |
1920 | { | |
1921 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1922 | } | |
1923 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1924 | (sgot->contents | |
1925 | + (h->got.offset & ~1))); | |
1926 | ||
947216bf AM |
1927 | loc = srela->contents; |
1928 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1929 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1930 | } |
1931 | ||
f5385ebf | 1932 | if (h->needs_copy) |
90ace9e9 JT |
1933 | { |
1934 | asection *s; | |
1935 | Elf_Internal_Rela rela; | |
947216bf | 1936 | bfd_byte *loc; |
90ace9e9 JT |
1937 | |
1938 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1939 | BFD_ASSERT (h->dynindx != -1 |
1940 | && (h->root.type == bfd_link_hash_defined | |
1941 | || h->root.type == bfd_link_hash_defweak)); | |
1942 | ||
1943 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1944 | ".rela.bss"); | |
1945 | BFD_ASSERT (s != NULL); | |
1946 | ||
1947 | rela.r_offset = (h->root.u.def.value | |
1948 | + h->root.u.def.section->output_section->vma | |
1949 | + h->root.u.def.section->output_offset); | |
1950 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1951 | rela.r_addend = 0; | |
947216bf AM |
1952 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1953 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1954 | } |
1955 | ||
1956 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1957 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 1958 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1959 | sym->st_shndx = SHN_ABS; |
1960 | ||
b34976b6 | 1961 | return TRUE; |
90ace9e9 JT |
1962 | } |
1963 | ||
1964 | /* Finish up the dynamic sections. */ | |
1965 | ||
b34976b6 | 1966 | static bfd_boolean |
ce71b576 | 1967 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1968 | { |
1969 | bfd *dynobj; | |
1970 | asection *sgot; | |
1971 | asection *sdyn; | |
1972 | ||
1973 | dynobj = elf_hash_table (info)->dynobj; | |
1974 | ||
1975 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1976 | BFD_ASSERT (sgot != NULL); | |
1977 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1978 | ||
1979 | if (elf_hash_table (info)->dynamic_sections_created) | |
1980 | { | |
1981 | asection *splt; | |
1982 | Elf32_External_Dyn *dyncon, *dynconend; | |
1983 | ||
1984 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1985 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1986 | ||
1987 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1988 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1989 | for (; dyncon < dynconend; dyncon++) |
1990 | { | |
1991 | Elf_Internal_Dyn dyn; | |
1992 | const char *name; | |
1993 | asection *s; | |
1994 | ||
1995 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1996 | ||
1997 | switch (dyn.d_tag) | |
1998 | { | |
1999 | default: | |
2000 | break; | |
2001 | ||
2002 | case DT_PLTGOT: | |
2003 | name = ".got"; | |
2004 | goto get_vma; | |
2005 | case DT_JMPREL: | |
2006 | name = ".rela.plt"; | |
2007 | get_vma: | |
2008 | s = bfd_get_section_by_name (output_bfd, name); | |
2009 | BFD_ASSERT (s != NULL); | |
2010 | dyn.d_un.d_ptr = s->vma; | |
2011 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2012 | break; | |
2013 | ||
2014 | case DT_PLTRELSZ: | |
2015 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2016 | BFD_ASSERT (s != NULL); | |
eea6121a | 2017 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2018 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2019 | break; | |
2020 | ||
2021 | case DT_RELASZ: | |
2022 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2023 | not be included in the overall relocs (DT_RELA). | |
2024 | Therefore, we override the DT_RELASZ entry here to | |
2025 | make it not include the JMPREL relocs. Since the | |
2026 | linker script arranges for .rela.plt to follow all | |
2027 | other relocation sections, we don't have to worry | |
2028 | about changing the DT_RELA entry. */ | |
2029 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2030 | if (s != NULL) | |
eea6121a | 2031 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2032 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2033 | break; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2038 | if (splt->size > 0) |
90ace9e9 JT |
2039 | { |
2040 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2041 | bfd_put_32 (output_bfd, | |
2042 | (sgot->output_section->vma | |
2043 | + sgot->output_offset + 4 | |
2044 | - (splt->output_section->vma + 6)), | |
2045 | splt->contents + 2); | |
2046 | bfd_put_32 (output_bfd, | |
2047 | (sgot->output_section->vma | |
2048 | + sgot->output_offset + 8 | |
2049 | - (splt->output_section->vma + 12)), | |
2050 | splt->contents + 8); | |
cedb70c5 | 2051 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2052 | = PLT_ENTRY_SIZE; |
2053 | } | |
2054 | } | |
2055 | ||
2056 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2057 | if (sgot->size > 0) |
90ace9e9 JT |
2058 | { |
2059 | if (sdyn == NULL) | |
2060 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2061 | else | |
2062 | bfd_put_32 (output_bfd, | |
2063 | sdyn->output_section->vma + sdyn->output_offset, | |
2064 | sgot->contents); | |
2065 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2066 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2067 | } | |
2068 | ||
2069 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2070 | ||
b34976b6 | 2071 | return TRUE; |
90ace9e9 JT |
2072 | } |
2073 | ||
2074 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec | |
2075 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2076 | #define ELF_MACHINE_CODE EM_VAX | |
2077 | #define ELF_MAXPAGESIZE 0x1000 | |
2078 | ||
2079 | #define elf_backend_create_dynamic_sections \ | |
2080 | _bfd_elf_create_dynamic_sections | |
2081 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2082 | elf_vax_link_hash_table_create | |
c152c796 | 2083 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2084 | |
2085 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2086 | #define elf_backend_adjust_dynamic_symbol \ | |
2087 | elf_vax_adjust_dynamic_symbol | |
2088 | #define elf_backend_size_dynamic_sections \ | |
2089 | elf_vax_size_dynamic_sections | |
2090 | #define elf_backend_relocate_section elf_vax_relocate_section | |
2091 | #define elf_backend_finish_dynamic_symbol \ | |
2092 | elf_vax_finish_dynamic_symbol | |
2093 | #define elf_backend_finish_dynamic_sections \ | |
2094 | elf_vax_finish_dynamic_sections | |
2095 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook | |
2096 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2097 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2098 | elf32_vax_merge_private_bfd_data | |
2099 | #define bfd_elf32_bfd_set_private_flags \ | |
2100 | elf32_vax_set_private_flags | |
2101 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2102 | elf32_vax_print_private_bfd_data | |
2103 | ||
2104 | #define elf_backend_can_gc_sections 1 | |
2105 | #define elf_backend_want_got_plt 1 | |
2106 | #define elf_backend_plt_readonly 1 | |
2107 | #define elf_backend_want_plt_sym 0 | |
2108 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2109 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2110 | |
2111 | #include "elf32-target.h" |