Commit | Line | Data |
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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 *); | |
ce71b576 NC |
37 | static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *, |
38 | struct elf_link_hash_entry *); | |
39 | static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *); | |
40 | static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *, | |
41 | bfd *, asection *, bfd_byte *, | |
42 | Elf_Internal_Rela *, | |
43 | Elf_Internal_Sym *, asection **); | |
44 | static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *, | |
45 | struct elf_link_hash_entry *, | |
46 | Elf_Internal_Sym *); | |
47 | static bfd_boolean elf_vax_finish_dynamic_sections (bfd *, | |
48 | struct bfd_link_info *); | |
49 | ||
50 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
51 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
52 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, PTR); | |
90ace9e9 JT |
53 | |
54 | static reloc_howto_type howto_table[] = { | |
55 | HOWTO (R_VAX_NONE, /* type */ | |
56 | 0, /* rightshift */ | |
57 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
58 | 0, /* bitsize */ | |
b34976b6 | 59 | FALSE, /* pc_relative */ |
90ace9e9 JT |
60 | 0, /* bitpos */ |
61 | complain_overflow_dont, /* complain_on_overflow */ | |
62 | bfd_elf_generic_reloc, /* special_function */ | |
63 | "R_VAX_NONE", /* name */ | |
b34976b6 | 64 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
65 | 0, /* src_mask */ |
66 | 0x00000000, /* dst_mask */ | |
b34976b6 | 67 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
68 | |
69 | HOWTO (R_VAX_32, /* type */ | |
70 | 0, /* rightshift */ | |
71 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
72 | 32, /* bitsize */ | |
b34976b6 | 73 | FALSE, /* pc_relative */ |
90ace9e9 JT |
74 | 0, /* bitpos */ |
75 | complain_overflow_bitfield, /* complain_on_overflow */ | |
76 | bfd_elf_generic_reloc, /* special_function */ | |
77 | "R_VAX_32", /* name */ | |
b34976b6 | 78 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
79 | 0, /* src_mask */ |
80 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 81 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
82 | |
83 | HOWTO (R_VAX_16, /* type */ | |
84 | 0, /* rightshift */ | |
85 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
86 | 16, /* bitsize */ | |
b34976b6 | 87 | FALSE, /* pc_relative */ |
90ace9e9 JT |
88 | 0, /* bitpos */ |
89 | complain_overflow_bitfield, /* complain_on_overflow */ | |
90 | bfd_elf_generic_reloc, /* special_function */ | |
91 | "R_VAX_16", /* name */ | |
b34976b6 | 92 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
93 | 0, /* src_mask */ |
94 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 95 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
96 | |
97 | HOWTO (R_VAX_8, /* type */ | |
98 | 0, /* rightshift */ | |
99 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
100 | 8, /* bitsize */ | |
b34976b6 | 101 | FALSE, /* pc_relative */ |
90ace9e9 JT |
102 | 0, /* bitpos */ |
103 | complain_overflow_bitfield, /* complain_on_overflow */ | |
104 | bfd_elf_generic_reloc, /* special_function */ | |
105 | "R_VAX_8", /* name */ | |
b34976b6 | 106 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
107 | 0, /* src_mask */ |
108 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 109 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
110 | |
111 | HOWTO (R_VAX_PC32, /* type */ | |
112 | 0, /* rightshift */ | |
113 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
114 | 32, /* bitsize */ | |
b34976b6 | 115 | TRUE, /* pc_relative */ |
90ace9e9 JT |
116 | 0, /* bitpos */ |
117 | complain_overflow_bitfield, /* complain_on_overflow */ | |
118 | bfd_elf_generic_reloc, /* special_function */ | |
119 | "R_VAX_PC32", /* name */ | |
b34976b6 | 120 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
121 | 0, /* src_mask */ |
122 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 123 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
124 | |
125 | HOWTO (R_VAX_PC16, /* type */ | |
126 | 0, /* rightshift */ | |
127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
128 | 16, /* bitsize */ | |
b34976b6 | 129 | TRUE, /* pc_relative */ |
90ace9e9 JT |
130 | 0, /* bitpos */ |
131 | complain_overflow_signed, /* complain_on_overflow */ | |
132 | bfd_elf_generic_reloc, /* special_function */ | |
133 | "R_VAX_PC16", /* name */ | |
b34976b6 | 134 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
135 | 0, /* src_mask */ |
136 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 137 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
138 | |
139 | HOWTO (R_VAX_PC8, /* type */ | |
140 | 0, /* rightshift */ | |
141 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
142 | 8, /* bitsize */ | |
b34976b6 | 143 | TRUE, /* pc_relative */ |
90ace9e9 JT |
144 | 0, /* bitpos */ |
145 | complain_overflow_signed, /* complain_on_overflow */ | |
146 | bfd_elf_generic_reloc, /* special_function */ | |
147 | "R_VAX_PC8", /* name */ | |
b34976b6 | 148 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
149 | 0, /* src_mask */ |
150 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 151 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
152 | |
153 | HOWTO (R_VAX_GOT32, /* type */ | |
154 | 0, /* rightshift */ | |
155 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
156 | 32, /* bitsize */ | |
b34976b6 | 157 | TRUE, /* pc_relative */ |
90ace9e9 JT |
158 | 0, /* bitpos */ |
159 | complain_overflow_bitfield, /* complain_on_overflow */ | |
160 | bfd_elf_generic_reloc, /* special_function */ | |
161 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 162 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
163 | 0, /* src_mask */ |
164 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 165 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
166 | |
167 | EMPTY_HOWTO (-1), | |
168 | EMPTY_HOWTO (-1), | |
169 | EMPTY_HOWTO (-1), | |
170 | EMPTY_HOWTO (-1), | |
171 | EMPTY_HOWTO (-1), | |
172 | ||
173 | HOWTO (R_VAX_PLT32, /* type */ | |
174 | 0, /* rightshift */ | |
175 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
176 | 32, /* bitsize */ | |
b34976b6 | 177 | TRUE, /* pc_relative */ |
90ace9e9 JT |
178 | 0, /* bitpos */ |
179 | complain_overflow_bitfield, /* complain_on_overflow */ | |
180 | bfd_elf_generic_reloc, /* special_function */ | |
181 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 182 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
183 | 0, /* src_mask */ |
184 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 185 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
186 | |
187 | EMPTY_HOWTO (-1), | |
188 | EMPTY_HOWTO (-1), | |
189 | EMPTY_HOWTO (-1), | |
190 | EMPTY_HOWTO (-1), | |
191 | EMPTY_HOWTO (-1), | |
192 | ||
193 | HOWTO (R_VAX_COPY, /* type */ | |
194 | 0, /* rightshift */ | |
195 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
196 | 0, /* bitsize */ | |
b34976b6 | 197 | FALSE, /* pc_relative */ |
90ace9e9 JT |
198 | 0, /* bitpos */ |
199 | complain_overflow_dont, /* complain_on_overflow */ | |
200 | bfd_elf_generic_reloc, /* special_function */ | |
201 | "R_VAX_COPY", /* name */ | |
b34976b6 | 202 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
203 | 0, /* src_mask */ |
204 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 205 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
206 | |
207 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
208 | 0, /* rightshift */ | |
209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
210 | 32, /* bitsize */ | |
b34976b6 | 211 | FALSE, /* pc_relative */ |
90ace9e9 JT |
212 | 0, /* bitpos */ |
213 | complain_overflow_dont, /* complain_on_overflow */ | |
214 | bfd_elf_generic_reloc, /* special_function */ | |
215 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 216 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
217 | 0, /* src_mask */ |
218 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 219 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
220 | |
221 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
222 | 0, /* rightshift */ | |
223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
224 | 32, /* bitsize */ | |
b34976b6 | 225 | FALSE, /* pc_relative */ |
90ace9e9 JT |
226 | 0, /* bitpos */ |
227 | complain_overflow_dont, /* complain_on_overflow */ | |
228 | bfd_elf_generic_reloc, /* special_function */ | |
229 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 230 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
231 | 0, /* src_mask */ |
232 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 233 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
234 | |
235 | HOWTO (R_VAX_RELATIVE, /* type */ | |
236 | 0, /* rightshift */ | |
237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 32, /* bitsize */ | |
b34976b6 | 239 | FALSE, /* pc_relative */ |
90ace9e9 JT |
240 | 0, /* bitpos */ |
241 | complain_overflow_dont, /* complain_on_overflow */ | |
242 | bfd_elf_generic_reloc, /* special_function */ | |
243 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 244 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
245 | 0, /* src_mask */ |
246 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 247 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
248 | |
249 | /* GNU extension to record C++ vtable hierarchy */ | |
250 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 0, /* bitsize */ | |
b34976b6 | 254 | FALSE, /* pc_relative */ |
90ace9e9 JT |
255 | 0, /* bitpos */ |
256 | complain_overflow_dont, /* complain_on_overflow */ | |
257 | NULL, /* special_function */ | |
258 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 259 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
260 | 0, /* src_mask */ |
261 | 0, /* dst_mask */ | |
b34976b6 | 262 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
263 | |
264 | /* GNU extension to record C++ vtable member usage */ | |
265 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 0, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
90ace9e9 JT |
270 | 0, /* bitpos */ |
271 | complain_overflow_dont, /* complain_on_overflow */ | |
272 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
273 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
275 | 0, /* src_mask */ |
276 | 0, /* dst_mask */ | |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
278 | }; |
279 | ||
280 | static void | |
ce71b576 NC |
281 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
282 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
283 | { |
284 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
285 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
286 | } | |
287 | ||
288 | #define elf_info_to_howto rtype_to_howto | |
289 | ||
290 | static const struct | |
291 | { | |
292 | bfd_reloc_code_real_type bfd_val; | |
293 | int elf_val; | |
294 | } reloc_map[] = { | |
295 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
296 | { BFD_RELOC_32, R_VAX_32 }, | |
297 | { BFD_RELOC_16, R_VAX_16 }, | |
298 | { BFD_RELOC_8, R_VAX_8 }, | |
299 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
300 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
301 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
302 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
303 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
304 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
305 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
306 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
307 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
308 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
309 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
310 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
311 | }; | |
312 | ||
313 | static reloc_howto_type * | |
ce71b576 | 314 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
315 | { |
316 | unsigned int i; | |
317 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
318 | { | |
319 | if (reloc_map[i].bfd_val == code) | |
320 | return &howto_table[reloc_map[i].elf_val]; | |
321 | } | |
322 | return 0; | |
323 | } | |
324 | ||
325 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup | |
326 | #define ELF_ARCH bfd_arch_vax | |
327 | /* end code generated by elf.el */ | |
90ace9e9 JT |
328 | \f |
329 | /* Functions for the VAX ELF linker. */ | |
330 | ||
331 | /* The name of the dynamic interpreter. This is put in the .interp | |
332 | section. */ | |
333 | ||
334 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
335 | ||
336 | /* The size in bytes of an entry in the procedure linkage table. */ | |
337 | ||
338 | #define PLT_ENTRY_SIZE 12 | |
339 | ||
340 | /* The first entry in a procedure linkage table looks like this. See | |
341 | the SVR4 ABI VAX supplement to see how this works. */ | |
342 | ||
343 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
344 | { | |
345 | 0xdd, 0xef, /* pushl l^ */ | |
346 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
347 | 0x17, 0xff, /* jmp @L^(pc) */ | |
348 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
349 | }; | |
350 | ||
351 | /* Subsequent entries in a procedure linkage table look like this. */ | |
352 | ||
353 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
354 | { | |
355 | 0x40, 0x00, /* .word ^M<r6> */ | |
356 | 0x16, 0xef, /* jsb L^(pc) */ | |
357 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ | |
358 | 0, 0, 0, 0, /* index into .rela.plt */ | |
359 | }; | |
360 | ||
361 | /* The VAX linker needs to keep track of the number of relocs that it | |
362 | decides to copy in check_relocs for each symbol. This is so that it | |
363 | can discard PC relative relocs if it doesn't need them when linking | |
364 | with -Bsymbolic. We store the information in a field extending the | |
365 | regular ELF linker hash table. */ | |
366 | ||
367 | /* This structure keeps track of the number of PC relative relocs we have | |
368 | copied for a given symbol. */ | |
369 | ||
370 | struct elf_vax_pcrel_relocs_copied | |
371 | { | |
372 | /* Next section. */ | |
373 | struct elf_vax_pcrel_relocs_copied *next; | |
374 | /* A section in dynobj. */ | |
375 | asection *section; | |
376 | /* Number of relocs copied in this section. */ | |
377 | bfd_size_type count; | |
378 | }; | |
379 | ||
380 | /* VAX ELF linker hash entry. */ | |
381 | ||
382 | struct elf_vax_link_hash_entry | |
383 | { | |
384 | struct elf_link_hash_entry root; | |
385 | ||
386 | /* Number of PC relative relocs copied for this symbol. */ | |
387 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
388 | ||
389 | bfd_vma got_addend; | |
390 | }; | |
391 | ||
392 | /* VAX ELF linker hash table. */ | |
393 | ||
394 | struct elf_vax_link_hash_table | |
395 | { | |
396 | struct elf_link_hash_table root; | |
397 | }; | |
398 | ||
399 | /* Declare this now that the above structures are defined. */ | |
400 | ||
ce71b576 NC |
401 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
402 | PTR); | |
90ace9e9 | 403 | |
b29635ba JT |
404 | /* Declare this now that the above structures are defined. */ |
405 | ||
ce71b576 NC |
406 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
407 | PTR); | |
b29635ba | 408 | |
90ace9e9 JT |
409 | /* Traverse an VAX ELF linker hash table. */ |
410 | ||
411 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
412 | (elf_link_hash_traverse \ | |
413 | (&(table)->root, \ | |
ce71b576 | 414 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
90ace9e9 JT |
415 | (info))) |
416 | ||
417 | /* Get the VAX ELF linker hash table from a link_info structure. */ | |
418 | ||
ce71b576 | 419 | #define elf_vax_hash_table(p) ((struct elf_vax_link_hash_table *) (p)->hash) |
90ace9e9 JT |
420 | |
421 | /* Create an entry in an VAX ELF linker hash table. */ | |
422 | ||
423 | static struct bfd_hash_entry * | |
ce71b576 NC |
424 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
425 | struct bfd_hash_table *table, | |
426 | const char *string) | |
90ace9e9 JT |
427 | { |
428 | struct elf_vax_link_hash_entry *ret = | |
429 | (struct elf_vax_link_hash_entry *) entry; | |
430 | ||
431 | /* Allocate the structure if it has not already been allocated by a | |
432 | subclass. */ | |
ce71b576 | 433 | if (ret == NULL) |
90ace9e9 JT |
434 | ret = ((struct elf_vax_link_hash_entry *) |
435 | bfd_hash_allocate (table, | |
436 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 437 | if (ret == NULL) |
90ace9e9 JT |
438 | return (struct bfd_hash_entry *) ret; |
439 | ||
440 | /* Call the allocation method of the superclass. */ | |
441 | ret = ((struct elf_vax_link_hash_entry *) | |
442 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
443 | table, string)); | |
ce71b576 | 444 | if (ret != NULL) |
90ace9e9 JT |
445 | { |
446 | ret->pcrel_relocs_copied = NULL; | |
447 | } | |
448 | ||
449 | return (struct bfd_hash_entry *) ret; | |
450 | } | |
451 | ||
452 | /* Create an VAX ELF linker hash table. */ | |
453 | ||
454 | static struct bfd_link_hash_table * | |
ce71b576 | 455 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 JT |
456 | { |
457 | struct elf_vax_link_hash_table *ret; | |
458 | bfd_size_type amt = sizeof (struct elf_vax_link_hash_table); | |
459 | ||
ce71b576 NC |
460 | ret = bfd_malloc (amt); |
461 | if (ret == NULL) | |
90ace9e9 JT |
462 | return NULL; |
463 | ||
66eb6687 AM |
464 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
465 | elf_vax_link_hash_newfunc, | |
466 | sizeof (struct elf_vax_link_hash_entry))) | |
90ace9e9 JT |
467 | { |
468 | free (ret); | |
469 | return NULL; | |
470 | } | |
471 | ||
472 | return &ret->root.root; | |
473 | } | |
474 | ||
475 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 476 | static bfd_boolean |
ce71b576 | 477 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
478 | { |
479 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
480 | elf_flags_init (abfd) = TRUE; |
481 | return TRUE; | |
90ace9e9 JT |
482 | } |
483 | ||
484 | /* Merge backend specific data from an object file to the output | |
485 | object file when linking. */ | |
b34976b6 | 486 | static bfd_boolean |
ce71b576 | 487 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 JT |
488 | { |
489 | flagword out_flags; | |
490 | flagword in_flags; | |
491 | ||
492 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
493 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 494 | return TRUE; |
90ace9e9 JT |
495 | |
496 | in_flags = elf_elfheader (ibfd)->e_flags; | |
497 | out_flags = elf_elfheader (obfd)->e_flags; | |
498 | ||
499 | if (!elf_flags_init (obfd)) | |
500 | { | |
b34976b6 | 501 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
502 | elf_elfheader (obfd)->e_flags = in_flags; |
503 | } | |
504 | ||
b34976b6 | 505 | return TRUE; |
90ace9e9 JT |
506 | } |
507 | ||
508 | /* Display the flags field */ | |
b34976b6 | 509 | static bfd_boolean |
ce71b576 | 510 | elf32_vax_print_private_bfd_data (bfd *abfd, PTR ptr) |
90ace9e9 JT |
511 | { |
512 | FILE *file = (FILE *) ptr; | |
513 | ||
514 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
515 | ||
516 | /* Print normal ELF private data. */ | |
517 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
518 | ||
519 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
520 | ||
521 | /* xgettext:c-format */ | |
522 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
523 | ||
179d3252 | 524 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
525 | fprintf (file, _(" [nonpic]")); |
526 | ||
179d3252 | 527 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
528 | fprintf (file, _(" [d-float]")); |
529 | ||
179d3252 | 530 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
531 | fprintf (file, _(" [g-float]")); |
532 | ||
533 | fputc ('\n', file); | |
534 | ||
b34976b6 | 535 | return TRUE; |
90ace9e9 JT |
536 | } |
537 | /* Look through the relocs for a section during the first phase, and | |
538 | allocate space in the global offset table or procedure linkage | |
539 | table. */ | |
540 | ||
b34976b6 | 541 | static bfd_boolean |
ce71b576 NC |
542 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
543 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
544 | { |
545 | bfd *dynobj; | |
546 | Elf_Internal_Shdr *symtab_hdr; | |
547 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
548 | const Elf_Internal_Rela *rel; |
549 | const Elf_Internal_Rela *rel_end; | |
550 | asection *sgot; | |
551 | asection *srelgot; | |
552 | asection *sreloc; | |
553 | ||
1049f94e | 554 | if (info->relocatable) |
b34976b6 | 555 | return TRUE; |
90ace9e9 JT |
556 | |
557 | dynobj = elf_hash_table (info)->dynobj; | |
558 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
559 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
560 | |
561 | sgot = NULL; | |
562 | srelgot = NULL; | |
563 | sreloc = NULL; | |
564 | ||
565 | rel_end = relocs + sec->reloc_count; | |
566 | for (rel = relocs; rel < rel_end; rel++) | |
567 | { | |
568 | unsigned long r_symndx; | |
569 | struct elf_link_hash_entry *h; | |
570 | ||
571 | r_symndx = ELF32_R_SYM (rel->r_info); | |
572 | ||
573 | if (r_symndx < symtab_hdr->sh_info) | |
574 | h = NULL; | |
575 | else | |
973a3492 L |
576 | { |
577 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
578 | while (h->root.type == bfd_link_hash_indirect | |
579 | || h->root.type == bfd_link_hash_warning) | |
580 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
581 | } | |
90ace9e9 JT |
582 | |
583 | switch (ELF32_R_TYPE (rel->r_info)) | |
584 | { | |
585 | case R_VAX_GOT32: | |
586 | if (h != NULL | |
587 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
588 | break; | |
589 | ||
590 | /* This symbol requires a global offset table entry. */ | |
591 | ||
592 | if (dynobj == NULL) | |
593 | { | |
594 | /* Create the .got section. */ | |
595 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
596 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 597 | return FALSE; |
90ace9e9 JT |
598 | } |
599 | ||
600 | if (sgot == NULL) | |
601 | { | |
602 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
603 | BFD_ASSERT (sgot != NULL); | |
604 | } | |
605 | ||
606 | if (srelgot == NULL | |
607 | && (h != NULL || info->shared)) | |
608 | { | |
609 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
610 | if (srelgot == NULL) | |
611 | { | |
3496cb2a L |
612 | srelgot = bfd_make_section_with_flags (dynobj, |
613 | ".rela.got", | |
614 | (SEC_ALLOC | |
615 | | SEC_LOAD | |
616 | | SEC_HAS_CONTENTS | |
617 | | SEC_IN_MEMORY | |
618 | | SEC_LINKER_CREATED | |
619 | | SEC_READONLY)); | |
90ace9e9 | 620 | if (srelgot == NULL |
90ace9e9 | 621 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 622 | return FALSE; |
90ace9e9 JT |
623 | } |
624 | } | |
625 | ||
626 | if (h != NULL) | |
627 | { | |
628 | struct elf_vax_link_hash_entry *eh; | |
629 | ||
630 | eh = (struct elf_vax_link_hash_entry *) h; | |
631 | if (h->got.refcount == -1) | |
632 | { | |
633 | h->got.refcount = 1; | |
634 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
635 | } |
636 | else | |
637 | { | |
638 | h->got.refcount++; | |
639 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
640 | (*_bfd_error_handler) | |
641 | (_("%s: warning: GOT addend of %ld to `%s' does not match previous GOT addend of %ld"), | |
642 | bfd_get_filename (abfd), rel->r_addend, | |
643 | h->root.root.string, | |
644 | eh->got_addend); | |
cedb70c5 | 645 | |
90ace9e9 JT |
646 | } |
647 | } | |
648 | break; | |
649 | ||
650 | case R_VAX_PLT32: | |
651 | /* This symbol requires a procedure linkage table entry. We | |
652 | actually build the entry in adjust_dynamic_symbol, | |
653 | because this might be a case of linking PIC code which is | |
654 | never referenced by a dynamic object, in which case we | |
655 | don't need to generate a procedure linkage table entry | |
656 | after all. */ | |
657 | ||
658 | /* If this is a local symbol, we resolve it directly without | |
659 | creating a procedure linkage table entry. */ | |
660 | if (h == NULL) | |
661 | continue; | |
662 | ||
f5385ebf | 663 | h->needs_plt = 1; |
90ace9e9 JT |
664 | if (h->plt.refcount == -1) |
665 | h->plt.refcount = 1; | |
666 | else | |
667 | h->plt.refcount++; | |
668 | break; | |
669 | ||
670 | case R_VAX_PC8: | |
671 | case R_VAX_PC16: | |
672 | case R_VAX_PC32: | |
673 | /* If we are creating a shared library and this is not a local | |
674 | symbol, we need to copy the reloc into the shared library. | |
675 | However when linking with -Bsymbolic and this is a global | |
676 | symbol which is defined in an object we are including in the | |
677 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
678 | reloc directly. At this point we have not seen all the input | |
679 | files, so it is possible that DEF_REGULAR is not set now but | |
680 | will be set later (it is never cleared). We account for that | |
681 | possibility below by storing information in the | |
682 | pcrel_relocs_copied field of the hash table entry. */ | |
683 | if (!(info->shared | |
684 | && (sec->flags & SEC_ALLOC) != 0 | |
685 | && h != NULL | |
686 | && (!info->symbolic | |
f5385ebf | 687 | || !h->def_regular))) |
90ace9e9 JT |
688 | { |
689 | if (h != NULL) | |
690 | { | |
691 | /* Make sure a plt entry is created for this symbol if | |
692 | it turns out to be a function defined by a dynamic | |
693 | object. */ | |
694 | if (h->plt.refcount == -1) | |
695 | h->plt.refcount = 1; | |
696 | else | |
697 | h->plt.refcount++; | |
698 | } | |
699 | break; | |
700 | } | |
701 | /* Fall through. */ | |
702 | case R_VAX_8: | |
703 | case R_VAX_16: | |
704 | case R_VAX_32: | |
705 | if (h != NULL) | |
706 | { | |
707 | /* Make sure a plt entry is created for this symbol if it | |
708 | turns out to be a function defined by a dynamic object. */ | |
709 | if (h->plt.refcount == -1) | |
710 | h->plt.refcount = 1; | |
711 | else | |
712 | h->plt.refcount++; | |
713 | } | |
714 | ||
715 | /* If we are creating a shared library, we need to copy the | |
716 | reloc into the shared library. */ | |
717 | if (info->shared | |
718 | && (sec->flags & SEC_ALLOC) != 0) | |
719 | { | |
720 | /* When creating a shared object, we must copy these | |
721 | reloc types into the output file. We create a reloc | |
722 | section in dynobj and make room for this reloc. */ | |
723 | if (sreloc == NULL) | |
724 | { | |
725 | const char *name; | |
726 | ||
727 | name = (bfd_elf_string_from_elf_section | |
728 | (abfd, | |
729 | elf_elfheader (abfd)->e_shstrndx, | |
730 | elf_section_data (sec)->rel_hdr.sh_name)); | |
731 | if (name == NULL) | |
b34976b6 | 732 | return FALSE; |
90ace9e9 | 733 | |
0112cd26 | 734 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
90ace9e9 JT |
735 | && strcmp (bfd_get_section_name (abfd, sec), |
736 | name + 5) == 0); | |
737 | ||
738 | sreloc = bfd_get_section_by_name (dynobj, name); | |
739 | if (sreloc == NULL) | |
740 | { | |
3496cb2a L |
741 | sreloc = bfd_make_section_with_flags (dynobj, |
742 | name, | |
743 | (SEC_ALLOC | |
744 | | SEC_LOAD | |
745 | | SEC_HAS_CONTENTS | |
746 | | SEC_IN_MEMORY | |
747 | | SEC_LINKER_CREATED | |
748 | | SEC_READONLY)); | |
90ace9e9 | 749 | if (sreloc == NULL |
90ace9e9 | 750 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 751 | return FALSE; |
90ace9e9 JT |
752 | } |
753 | if (sec->flags & SEC_READONLY) | |
754 | info->flags |= DF_TEXTREL; | |
755 | } | |
756 | ||
eea6121a | 757 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
758 | |
759 | /* If we are linking with -Bsymbolic, we count the number of | |
760 | PC relative relocations we have entered for this symbol, | |
761 | so that we can discard them again if the symbol is later | |
762 | defined by a regular object. Note that this function is | |
19852a2a | 763 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
764 | which means that h is really a pointer to an |
765 | elf_vax_link_hash_entry. */ | |
766 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
767 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
768 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
769 | && info->symbolic) |
770 | { | |
771 | struct elf_vax_link_hash_entry *eh; | |
772 | struct elf_vax_pcrel_relocs_copied *p; | |
773 | ||
774 | eh = (struct elf_vax_link_hash_entry *) h; | |
775 | ||
776 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
777 | if (p->section == sreloc) | |
778 | break; | |
779 | ||
780 | if (p == NULL) | |
781 | { | |
782 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
783 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
784 | if (p == NULL) | |
b34976b6 | 785 | return FALSE; |
90ace9e9 JT |
786 | p->next = eh->pcrel_relocs_copied; |
787 | eh->pcrel_relocs_copied = p; | |
788 | p->section = sreloc; | |
789 | p->count = 0; | |
790 | } | |
791 | ||
792 | ++p->count; | |
793 | } | |
794 | } | |
795 | ||
796 | break; | |
797 | ||
798 | /* This relocation describes the C++ object vtable hierarchy. | |
799 | Reconstruct it for later use during GC. */ | |
800 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 801 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 802 | return FALSE; |
90ace9e9 JT |
803 | break; |
804 | ||
805 | /* This relocation describes which C++ vtable entries are actually | |
806 | used. Record for later use during GC. */ | |
807 | case R_VAX_GNU_VTENTRY: | |
c152c796 | 808 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 809 | return FALSE; |
90ace9e9 JT |
810 | break; |
811 | ||
812 | default: | |
813 | break; | |
814 | } | |
815 | } | |
816 | ||
b34976b6 | 817 | return TRUE; |
90ace9e9 JT |
818 | } |
819 | ||
820 | /* Return the section that should be marked against GC for a given | |
821 | relocation. */ | |
822 | ||
823 | static asection * | |
ce71b576 | 824 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 825 | struct bfd_link_info *info, |
ce71b576 NC |
826 | Elf_Internal_Rela *rel, |
827 | struct elf_link_hash_entry *h, | |
828 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
829 | { |
830 | if (h != NULL) | |
07adf181 AM |
831 | switch (ELF32_R_TYPE (rel->r_info)) |
832 | { | |
833 | case R_VAX_GNU_VTINHERIT: | |
834 | case R_VAX_GNU_VTENTRY: | |
835 | return NULL; | |
836 | } | |
837 | ||
838 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
839 | } |
840 | ||
841 | /* Update the got entry reference counts for the section being removed. */ | |
842 | ||
b34976b6 | 843 | static bfd_boolean |
ce71b576 NC |
844 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
845 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
846 | { |
847 | Elf_Internal_Shdr *symtab_hdr; | |
848 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 849 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 850 | bfd *dynobj; |
90ace9e9 | 851 | |
90ace9e9 JT |
852 | dynobj = elf_hash_table (info)->dynobj; |
853 | if (dynobj == NULL) | |
b34976b6 | 854 | return TRUE; |
90ace9e9 | 855 | |
babfd660 KH |
856 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
857 | sym_hashes = elf_sym_hashes (abfd); | |
858 | ||
90ace9e9 JT |
859 | relend = relocs + sec->reloc_count; |
860 | for (rel = relocs; rel < relend; rel++) | |
861 | { | |
babfd660 | 862 | unsigned long r_symndx; |
3eb128b2 AM |
863 | struct elf_link_hash_entry *h = NULL; |
864 | ||
865 | r_symndx = ELF32_R_SYM (rel->r_info); | |
866 | if (r_symndx >= symtab_hdr->sh_info) | |
867 | { | |
868 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
869 | while (h->root.type == bfd_link_hash_indirect | |
870 | || h->root.type == bfd_link_hash_warning) | |
871 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
872 | } | |
babfd660 | 873 | |
90ace9e9 JT |
874 | switch (ELF32_R_TYPE (rel->r_info)) |
875 | { | |
876 | case R_VAX_GOT32: | |
3eb128b2 AM |
877 | if (h != NULL && h->got.refcount > 0) |
878 | --h->got.refcount; | |
90ace9e9 JT |
879 | break; |
880 | ||
881 | case R_VAX_PLT32: | |
882 | case R_VAX_PC8: | |
883 | case R_VAX_PC16: | |
884 | case R_VAX_PC32: | |
885 | case R_VAX_8: | |
886 | case R_VAX_16: | |
887 | case R_VAX_32: | |
3eb128b2 AM |
888 | if (h != NULL && h->plt.refcount > 0) |
889 | --h->plt.refcount; | |
90ace9e9 JT |
890 | break; |
891 | ||
892 | default: | |
893 | break; | |
894 | } | |
895 | } | |
896 | ||
b34976b6 | 897 | return TRUE; |
90ace9e9 JT |
898 | } |
899 | ||
900 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
901 | regular object. The current definition is in some section of the | |
902 | dynamic object, but we're not including those sections. We have to | |
903 | change the definition to something the rest of the link can | |
904 | understand. */ | |
905 | ||
b34976b6 | 906 | static bfd_boolean |
90ace9e9 JT |
907 | elf_vax_adjust_dynamic_symbol (info, h) |
908 | struct bfd_link_info *info; | |
909 | struct elf_link_hash_entry *h; | |
910 | { | |
911 | bfd *dynobj; | |
912 | asection *s; | |
913 | unsigned int power_of_two; | |
914 | ||
915 | dynobj = elf_hash_table (info)->dynobj; | |
916 | ||
917 | /* Make sure we know what is going on here. */ | |
918 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 919 | && (h->needs_plt |
f6e332e6 | 920 | || h->u.weakdef != NULL |
f5385ebf AM |
921 | || (h->def_dynamic |
922 | && h->ref_regular | |
923 | && !h->def_regular))); | |
90ace9e9 JT |
924 | |
925 | /* If this is a function, put it in the procedure linkage table. We | |
926 | will fill in the contents of the procedure linkage table later, | |
927 | when we know the address of the .got section. */ | |
928 | if (h->type == STT_FUNC | |
f5385ebf | 929 | || h->needs_plt) |
90ace9e9 JT |
930 | { |
931 | if (! info->shared | |
f5385ebf AM |
932 | && !h->def_dynamic |
933 | && !h->ref_dynamic | |
90ace9e9 JT |
934 | /* We must always create the plt entry if it was referenced |
935 | by a PLTxxO relocation. In this case we already recorded | |
936 | it as a dynamic symbol. */ | |
937 | && h->dynindx == -1) | |
938 | { | |
939 | /* This case can occur if we saw a PLTxx reloc in an input | |
940 | file, but the symbol was never referred to by a dynamic | |
941 | object. In such a case, we don't actually need to build | |
942 | a procedure linkage table, and we can just do a PCxx | |
943 | reloc instead. */ | |
f5385ebf | 944 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 945 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 946 | return TRUE; |
90ace9e9 JT |
947 | } |
948 | ||
949 | /* GC may have rendered this entry unused. */ | |
950 | if (h->plt.refcount <= 0) | |
951 | { | |
f5385ebf | 952 | h->needs_plt = 0; |
90ace9e9 | 953 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 954 | return TRUE; |
90ace9e9 JT |
955 | } |
956 | ||
957 | /* Make sure this symbol is output as a dynamic symbol. */ | |
958 | if (h->dynindx == -1) | |
959 | { | |
c152c796 | 960 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 961 | return FALSE; |
90ace9e9 JT |
962 | } |
963 | ||
964 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
965 | BFD_ASSERT (s != NULL); | |
966 | ||
967 | /* If this is the first .plt entry, make room for the special | |
968 | first entry. */ | |
eea6121a | 969 | if (s->size == 0) |
90ace9e9 | 970 | { |
eea6121a | 971 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
972 | } |
973 | ||
974 | /* If this symbol is not defined in a regular file, and we are | |
975 | not generating a shared library, then set the symbol to this | |
976 | location in the .plt. This is required to make function | |
977 | pointers compare as equal between the normal executable and | |
978 | the shared library. */ | |
979 | if (!info->shared | |
f5385ebf | 980 | && !h->def_regular) |
90ace9e9 JT |
981 | { |
982 | h->root.u.def.section = s; | |
eea6121a | 983 | h->root.u.def.value = s->size; |
90ace9e9 JT |
984 | } |
985 | ||
eea6121a | 986 | h->plt.offset = s->size; |
90ace9e9 JT |
987 | |
988 | /* Make room for this entry. */ | |
eea6121a | 989 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
990 | |
991 | /* We also need to make an entry in the .got.plt section, which | |
992 | will be placed in the .got section by the linker script. */ | |
993 | ||
994 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
995 | BFD_ASSERT (s != NULL); | |
eea6121a | 996 | s->size += 4; |
90ace9e9 JT |
997 | |
998 | /* We also need to make an entry in the .rela.plt section. */ | |
999 | ||
1000 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1001 | BFD_ASSERT (s != NULL); | |
eea6121a | 1002 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1003 | |
b34976b6 | 1004 | return TRUE; |
90ace9e9 JT |
1005 | } |
1006 | ||
1007 | /* Reinitialize the plt offset now that it is not used as a reference | |
1008 | count any more. */ | |
1009 | h->plt.offset = (bfd_vma) -1; | |
1010 | ||
1011 | /* If this is a weak symbol, and there is a real definition, the | |
1012 | processor independent code will have arranged for us to see the | |
1013 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1014 | if (h->u.weakdef != NULL) |
90ace9e9 | 1015 | { |
f6e332e6 AM |
1016 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1017 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1018 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1019 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1020 | return TRUE; |
90ace9e9 JT |
1021 | } |
1022 | ||
1023 | /* This is a reference to a symbol defined by a dynamic object which | |
1024 | is not a function. */ | |
1025 | ||
1026 | /* If we are creating a shared library, we must presume that the | |
1027 | only references to the symbol are via the global offset table. | |
1028 | For such cases we need not do anything here; the relocations will | |
1029 | be handled correctly by relocate_section. */ | |
1030 | if (info->shared) | |
b34976b6 | 1031 | return TRUE; |
90ace9e9 | 1032 | |
909272ee AM |
1033 | if (h->size == 0) |
1034 | { | |
1035 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1036 | h->root.root.string); | |
1037 | return TRUE; | |
1038 | } | |
1039 | ||
90ace9e9 JT |
1040 | /* We must allocate the symbol in our .dynbss section, which will |
1041 | become part of the .bss section of the executable. There will be | |
1042 | an entry for this symbol in the .dynsym section. The dynamic | |
1043 | object will contain position independent code, so all references | |
1044 | from the dynamic object to this symbol will go through the global | |
1045 | offset table. The dynamic linker will use the .dynsym entry to | |
1046 | determine the address it must put in the global offset table, so | |
1047 | both the dynamic object and the regular object will refer to the | |
1048 | same memory location for the variable. */ | |
1049 | ||
1050 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1051 | BFD_ASSERT (s != NULL); | |
1052 | ||
1053 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1054 | copy the initial value out of the dynamic object and into the | |
1055 | runtime process image. We need to remember the offset into the | |
1056 | .rela.bss section we are going to use. */ | |
1057 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1058 | { | |
1059 | asection *srel; | |
1060 | ||
1061 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1062 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1063 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1064 | h->needs_copy = 1; |
90ace9e9 JT |
1065 | } |
1066 | ||
1067 | /* We need to figure out the alignment required for this symbol. I | |
1068 | have no idea how ELF linkers handle this. */ | |
1069 | power_of_two = bfd_log2 (h->size); | |
1070 | if (power_of_two > 3) | |
1071 | power_of_two = 3; | |
1072 | ||
1073 | /* Apply the required alignment. */ | |
eea6121a | 1074 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
90ace9e9 JT |
1075 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
1076 | { | |
1077 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 1078 | return FALSE; |
90ace9e9 JT |
1079 | } |
1080 | ||
1081 | /* Define the symbol as being at this point in the section. */ | |
1082 | h->root.u.def.section = s; | |
eea6121a | 1083 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1084 | |
1085 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 1086 | s->size += h->size; |
90ace9e9 | 1087 | |
b34976b6 | 1088 | return TRUE; |
90ace9e9 JT |
1089 | } |
1090 | ||
1091 | /* Set the sizes of the dynamic sections. */ | |
1092 | ||
b34976b6 | 1093 | static bfd_boolean |
ce71b576 | 1094 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1095 | { |
1096 | bfd *dynobj; | |
1097 | asection *s; | |
b34976b6 AM |
1098 | bfd_boolean plt; |
1099 | bfd_boolean relocs; | |
1100 | bfd_boolean reltext; | |
90ace9e9 JT |
1101 | |
1102 | dynobj = elf_hash_table (info)->dynobj; | |
1103 | BFD_ASSERT (dynobj != NULL); | |
1104 | ||
1105 | if (elf_hash_table (info)->dynamic_sections_created) | |
1106 | { | |
1107 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1108 | if (info->executable) |
90ace9e9 JT |
1109 | { |
1110 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1111 | BFD_ASSERT (s != NULL); | |
eea6121a | 1112 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1113 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1114 | } | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | /* We may have created entries in the .rela.got and .got sections. | |
1119 | However, if we are not creating the dynamic sections, we will | |
1120 | not actually use these entries. Reset the size of .rela.got | |
1121 | and .got, which will cause it to get stripped from the output | |
1122 | file below. */ | |
1123 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1124 | if (s != NULL) | |
eea6121a | 1125 | s->size = 0; |
90ace9e9 JT |
1126 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1127 | if (s != NULL) | |
eea6121a | 1128 | s->size = 0; |
90ace9e9 JT |
1129 | s = bfd_get_section_by_name (dynobj, ".got"); |
1130 | if (s != NULL) | |
eea6121a | 1131 | s->size = 0; |
90ace9e9 JT |
1132 | } |
1133 | ||
1134 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1135 | relative relocs against symbols defined in a regular object. We | |
1136 | allocated space for them in the check_relocs routine, but we will not | |
1137 | fill them in in the relocate_section routine. */ | |
1138 | if (info->shared && info->symbolic) | |
1139 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba | 1140 | elf_vax_discard_copies, |
ce71b576 | 1141 | NULL); |
b29635ba | 1142 | |
b34976b6 | 1143 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1144 | discard all the got entries we've recorded. Otherwise, we need to |
1145 | instantiate (allocate space for them). */ | |
1146 | elf_link_hash_traverse (elf_hash_table (info), | |
1147 | elf_vax_instantiate_got_entries, | |
1148 | (PTR) info); | |
90ace9e9 JT |
1149 | |
1150 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1151 | determined the sizes of the various dynamic sections. Allocate | |
1152 | memory for them. */ | |
b34976b6 AM |
1153 | plt = FALSE; |
1154 | relocs = FALSE; | |
1155 | reltext = FALSE; | |
90ace9e9 JT |
1156 | for (s = dynobj->sections; s != NULL; s = s->next) |
1157 | { | |
1158 | const char *name; | |
90ace9e9 JT |
1159 | |
1160 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1161 | continue; | |
1162 | ||
1163 | /* It's OK to base decisions on the section name, because none | |
1164 | of the dynobj section names depend upon the input files. */ | |
1165 | name = bfd_get_section_name (dynobj, s); | |
1166 | ||
90ace9e9 JT |
1167 | if (strcmp (name, ".plt") == 0) |
1168 | { | |
c456f082 AM |
1169 | /* Remember whether there is a PLT. */ |
1170 | plt = s->size != 0; | |
90ace9e9 | 1171 | } |
0112cd26 | 1172 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1173 | { |
c456f082 | 1174 | if (s->size != 0) |
90ace9e9 JT |
1175 | { |
1176 | asection *target; | |
1177 | ||
1178 | /* Remember whether there are any reloc sections other | |
1179 | than .rela.plt. */ | |
1180 | if (strcmp (name, ".rela.plt") != 0) | |
1181 | { | |
1182 | const char *outname; | |
1183 | ||
b34976b6 | 1184 | relocs = TRUE; |
90ace9e9 JT |
1185 | |
1186 | /* If this relocation section applies to a read only | |
1187 | section, then we probably need a DT_TEXTREL | |
1188 | entry. .rela.plt is actually associated with | |
1189 | .got.plt, which is never readonly. */ | |
1190 | outname = bfd_get_section_name (output_bfd, | |
1191 | s->output_section); | |
1192 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1193 | if (target != NULL | |
1194 | && (target->flags & SEC_READONLY) != 0 | |
1195 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1196 | reltext = TRUE; |
90ace9e9 JT |
1197 | } |
1198 | ||
1199 | /* We use the reloc_count field as a counter if we need | |
1200 | to copy relocs into the output file. */ | |
1201 | s->reloc_count = 0; | |
1202 | } | |
1203 | } | |
0112cd26 | 1204 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1205 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1206 | { |
1207 | /* It's not one of our sections, so don't allocate space. */ | |
1208 | continue; | |
1209 | } | |
1210 | ||
c456f082 | 1211 | if (s->size == 0) |
90ace9e9 | 1212 | { |
c456f082 AM |
1213 | /* If we don't need this section, strip it from the |
1214 | output file. This is mostly to handle .rela.bss and | |
1215 | .rela.plt. We must create both sections in | |
1216 | create_dynamic_sections, because they must be created | |
1217 | before the linker maps input sections to output | |
1218 | sections. The linker does that before | |
1219 | adjust_dynamic_symbol is called, and it is that | |
1220 | function which decides whether anything needs to go | |
1221 | into these sections. */ | |
8423293d | 1222 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1223 | continue; |
1224 | } | |
1225 | ||
c456f082 AM |
1226 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1227 | continue; | |
1228 | ||
90ace9e9 | 1229 | /* Allocate memory for the section contents. */ |
eea6121a | 1230 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1231 | if (s->contents == NULL) |
b34976b6 | 1232 | return FALSE; |
90ace9e9 JT |
1233 | } |
1234 | ||
1235 | if (elf_hash_table (info)->dynamic_sections_created) | |
1236 | { | |
1237 | /* Add some entries to the .dynamic section. We fill in the | |
1238 | values later, in elf_vax_finish_dynamic_sections, but we | |
1239 | must add the entries now so that we get the correct size for | |
1240 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1241 | dynamic linker and used by the debugger. */ | |
1242 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1243 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1244 | |
1245 | if (!info->shared) | |
1246 | { | |
1247 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1248 | return FALSE; |
90ace9e9 JT |
1249 | } |
1250 | ||
1251 | if (plt) | |
1252 | { | |
1253 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1254 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1255 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1256 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1257 | return FALSE; |
90ace9e9 JT |
1258 | } |
1259 | ||
1260 | if (relocs) | |
1261 | { | |
1262 | if (!add_dynamic_entry (DT_RELA, 0) | |
1263 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1264 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1265 | return FALSE; |
90ace9e9 JT |
1266 | } |
1267 | ||
1268 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1269 | { | |
1270 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1271 | return FALSE; |
90ace9e9 JT |
1272 | } |
1273 | } | |
1274 | #undef add_dynamic_entry | |
1275 | ||
b34976b6 | 1276 | return TRUE; |
90ace9e9 JT |
1277 | } |
1278 | ||
1279 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1280 | creating a shared object with -Bsymbolic. It discards the space | |
1281 | allocated to copy PC relative relocs against symbols which are defined | |
1282 | in regular objects. We allocated space for them in the check_relocs | |
1283 | routine, but we won't fill them in in the relocate_section routine. */ | |
1284 | ||
b34976b6 | 1285 | static bfd_boolean |
ce71b576 NC |
1286 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
1287 | PTR ignore ATTRIBUTE_UNUSED) | |
90ace9e9 JT |
1288 | { |
1289 | struct elf_vax_pcrel_relocs_copied *s; | |
1290 | ||
1291 | if (h->root.root.type == bfd_link_hash_warning) | |
1292 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1293 | ||
1294 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1295 | if (!h->root.def_regular) |
b34976b6 | 1296 | return TRUE; |
90ace9e9 JT |
1297 | |
1298 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1299 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1300 | |
b34976b6 | 1301 | return TRUE; |
90ace9e9 JT |
1302 | } |
1303 | ||
b29635ba JT |
1304 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1305 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1306 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1307 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1308 | creating a shared object or executable, space in the .got and .rela.got | |
1309 | will be reserved for the symbol. */ | |
1310 | ||
b34976b6 | 1311 | static bfd_boolean |
ce71b576 | 1312 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, PTR infoptr) |
b29635ba JT |
1313 | { |
1314 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1315 | bfd *dynobj; | |
1316 | asection *sgot; | |
1317 | asection *srelgot; | |
b34976b6 | 1318 | |
b29635ba JT |
1319 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1320 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1321 | return TRUE; |
b29635ba JT |
1322 | |
1323 | dynobj = elf_hash_table (info)->dynobj; | |
1324 | if (dynobj == NULL) | |
b34976b6 | 1325 | return TRUE; |
b29635ba JT |
1326 | |
1327 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1328 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1329 | ||
1330 | if (!elf_hash_table (info)->dynamic_sections_created | |
1331 | || (info->shared && info->symbolic)) | |
1332 | { | |
1333 | h->got.refcount = 0; | |
1334 | h->got.offset = (bfd_vma) -1; | |
1335 | h->plt.refcount = 0; | |
1336 | h->plt.offset = (bfd_vma) -1; | |
1337 | } | |
1338 | else if (h->got.refcount > 0) | |
1339 | { | |
1340 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1341 | if (h->dynindx == -1) | |
1342 | { | |
c152c796 | 1343 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1344 | return FALSE; |
b29635ba JT |
1345 | } |
1346 | ||
1347 | /* Allocate space in the .got and .rela.got sections. */ | |
eea6121a AM |
1348 | sgot->size += 4; |
1349 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1350 | } |
1351 | ||
b34976b6 | 1352 | return TRUE; |
b29635ba JT |
1353 | } |
1354 | ||
90ace9e9 JT |
1355 | /* Relocate an VAX ELF section. */ |
1356 | ||
b34976b6 | 1357 | static bfd_boolean |
ce71b576 NC |
1358 | elf_vax_relocate_section (bfd *output_bfd, |
1359 | struct bfd_link_info *info, | |
1360 | bfd *input_bfd, | |
1361 | asection *input_section, | |
1362 | bfd_byte *contents, | |
1363 | Elf_Internal_Rela *relocs, | |
1364 | Elf_Internal_Sym *local_syms, | |
1365 | asection **local_sections) | |
90ace9e9 JT |
1366 | { |
1367 | bfd *dynobj; | |
1368 | Elf_Internal_Shdr *symtab_hdr; | |
1369 | struct elf_link_hash_entry **sym_hashes; | |
1370 | bfd_vma *local_got_offsets; | |
1371 | bfd_vma plt_index; | |
1372 | bfd_vma got_offset; | |
1373 | asection *sgot; | |
1374 | asection *splt; | |
1375 | asection *sgotplt; | |
1376 | asection *sreloc; | |
1377 | Elf_Internal_Rela *rel; | |
1378 | Elf_Internal_Rela *relend; | |
1379 | ||
1049f94e | 1380 | if (info->relocatable) |
b34976b6 | 1381 | return TRUE; |
f0fe0e16 | 1382 | |
90ace9e9 JT |
1383 | dynobj = elf_hash_table (info)->dynobj; |
1384 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1385 | sym_hashes = elf_sym_hashes (input_bfd); | |
1386 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1387 | ||
1388 | sgot = NULL; | |
1389 | splt = NULL; | |
1390 | sgotplt = NULL; | |
1391 | sreloc = NULL; | |
1392 | ||
1393 | rel = relocs; | |
1394 | relend = relocs + input_section->reloc_count; | |
1395 | for (; rel < relend; rel++) | |
1396 | { | |
1397 | int r_type; | |
1398 | reloc_howto_type *howto; | |
1399 | unsigned long r_symndx; | |
1400 | struct elf_link_hash_entry *h; | |
1401 | Elf_Internal_Sym *sym; | |
1402 | asection *sec; | |
1403 | bfd_vma relocation; | |
1404 | bfd_reloc_status_type r; | |
1405 | ||
1406 | r_type = ELF32_R_TYPE (rel->r_info); | |
1407 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1408 | { | |
1409 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1410 | return FALSE; |
90ace9e9 JT |
1411 | } |
1412 | howto = howto_table + r_type; | |
1413 | ||
90ace9e9 | 1414 | /* This is a final link. */ |
f0fe0e16 | 1415 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1416 | h = NULL; |
1417 | sym = NULL; | |
1418 | sec = NULL; | |
1419 | if (r_symndx < symtab_hdr->sh_info) | |
1420 | { | |
1421 | sym = local_syms + r_symndx; | |
1422 | sec = local_sections[r_symndx]; | |
8517fae7 | 1423 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1424 | } |
1425 | else | |
1426 | { | |
560e09e9 NC |
1427 | bfd_boolean unresolved_reloc; |
1428 | bfd_boolean warned; | |
1429 | ||
b2a8e766 AM |
1430 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1431 | r_symndx, symtab_hdr, sym_hashes, | |
1432 | h, sec, relocation, | |
1433 | unresolved_reloc, warned); | |
ce71b576 | 1434 | |
560e09e9 | 1435 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1436 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1437 | && ((r_type == R_VAX_PLT32 |
90ace9e9 JT |
1438 | && h->plt.offset != (bfd_vma) -1 |
1439 | && elf_hash_table (info)->dynamic_sections_created) | |
1440 | || (r_type == R_VAX_GOT32 | |
1441 | && strcmp (h->root.root.string, | |
1442 | "_GLOBAL_OFFSET_TABLE_") != 0 | |
1443 | && elf_hash_table (info)->dynamic_sections_created | |
1444 | && (! info->shared | |
1445 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1446 | || !h->def_regular)) |
90ace9e9 JT |
1447 | || (info->shared |
1448 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1449 | || !h->def_regular) |
90ace9e9 JT |
1450 | && ((input_section->flags & SEC_ALLOC) != 0 |
1451 | /* DWARF will emit R_VAX_32 relocations in its | |
1452 | sections against symbols defined externally | |
1453 | in shared libraries. We can't do anything | |
1454 | with them here. */ | |
1455 | ||
1456 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1457 | && h->def_dynamic)) |
90ace9e9 JT |
1458 | && (r_type == R_VAX_8 |
1459 | || r_type == R_VAX_16 | |
1460 | || r_type == R_VAX_32 | |
1461 | || r_type == R_VAX_PC8 | |
1462 | || r_type == R_VAX_PC16 | |
560e09e9 NC |
1463 | || r_type == R_VAX_PC32)))) |
1464 | /* In these cases, we don't need the relocation | |
1465 | value. We check specially because in some | |
1466 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1467 | relocation = 0; |
90ace9e9 JT |
1468 | } |
1469 | ||
1470 | switch (r_type) | |
1471 | { | |
1472 | case R_VAX_GOT32: | |
1473 | /* Relocation is to the address of the entry for this symbol | |
1474 | in the global offset table. */ | |
b29635ba | 1475 | if (h == NULL || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1476 | break; |
1477 | ||
1478 | /* Relocation is the offset of the entry for this symbol in | |
1479 | the global offset table. */ | |
1480 | ||
1481 | { | |
1482 | bfd_vma off; | |
1483 | ||
90ace9e9 JT |
1484 | if (sgot == NULL) |
1485 | { | |
1486 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1487 | BFD_ASSERT (sgot != NULL); | |
1488 | } | |
1489 | ||
1490 | BFD_ASSERT (h != NULL); | |
1491 | off = h->got.offset; | |
1492 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1493 | BFD_ASSERT (off < sgot->size); |
90ace9e9 JT |
1494 | |
1495 | if (info->shared | |
1496 | && h->dynindx == -1 | |
f5385ebf | 1497 | && h->def_regular) |
90ace9e9 JT |
1498 | { |
1499 | /* The symbol was forced to be local | |
1500 | because of a version file.. We must initialize | |
1501 | this entry in the global offset table. Since | |
1502 | the offset must always be a multiple of 4, we | |
1503 | use the least significant bit to record whether | |
1504 | we have initialized it already. | |
1505 | ||
1506 | When doing a dynamic link, we create a .rela.got | |
1507 | relocation entry to initialize the value. This | |
1508 | is done in the finish_dynamic_symbol routine. */ | |
1509 | if ((off & 1) != 0) | |
1510 | off &= ~1; | |
1511 | else | |
1512 | { | |
1513 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1514 | sgot->contents + off); | |
1515 | h->got.offset |= 1; | |
1516 | } | |
1517 | } else { | |
1518 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1519 | } | |
1520 | ||
1521 | relocation = sgot->output_offset + off; | |
b29635ba | 1522 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1523 | rel->r_addend = 0; |
1524 | ||
b29635ba JT |
1525 | /* Change the reference to be indirect. */ |
1526 | contents[rel->r_offset - 1] |= 0x10; | |
1527 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1528 | } |
1529 | break; | |
1530 | ||
1531 | case R_VAX_PLT32: | |
1532 | /* Relocation is to the entry for this symbol in the | |
1533 | procedure linkage table. */ | |
1534 | ||
1535 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1536 | without using the procedure linkage table. */ | |
1537 | if (h == NULL) | |
1538 | break; | |
1539 | ||
1540 | if (h->plt.offset == (bfd_vma) -1 | |
1541 | || !elf_hash_table (info)->dynamic_sections_created) | |
1542 | { | |
1543 | /* We didn't make a PLT entry for this symbol. This | |
1544 | happens when statically linking PIC code, or when | |
1545 | using -Bsymbolic. */ | |
1546 | break; | |
1547 | } | |
1548 | ||
1549 | if (splt == NULL) | |
1550 | { | |
1551 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1552 | BFD_ASSERT (splt != NULL); | |
1553 | } | |
1554 | ||
1555 | if (sgotplt == NULL) | |
1556 | { | |
1557 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1558 | BFD_ASSERT (splt != NULL); | |
1559 | } | |
1560 | ||
1561 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1562 | ||
1563 | /* Get the offset into the .got table of the entry that | |
1564 | corresponds to this function. Each .got entry is 4 bytes. | |
1565 | The first two are reserved. */ | |
1566 | got_offset = (plt_index + 3) * 4; | |
1567 | ||
1568 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1569 | of the plt itself. */ |
90ace9e9 JT |
1570 | relocation = (sgotplt->output_section->vma |
1571 | + sgotplt->output_offset | |
1572 | + got_offset); | |
1573 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1574 | if (rel->r_addend == 2) | |
1575 | { | |
1576 | h->plt.offset |= 1; | |
1577 | } | |
1578 | else if (rel->r_addend != 0) | |
1579 | (*_bfd_error_handler) | |
1580 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1581 | bfd_get_filename (input_bfd), rel->r_addend, | |
1582 | h->root.root.string, | |
1583 | bfd_get_section_name (input_bfd, input_section)); | |
1584 | rel->r_addend = 0; | |
1585 | ||
1586 | break; | |
1587 | ||
1588 | case R_VAX_PC8: | |
1589 | case R_VAX_PC16: | |
1590 | case R_VAX_PC32: | |
1591 | if (h == NULL) | |
1592 | break; | |
1593 | /* Fall through. */ | |
1594 | case R_VAX_8: | |
1595 | case R_VAX_16: | |
1596 | case R_VAX_32: | |
1597 | if (info->shared | |
1598 | && r_symndx != 0 | |
1599 | && (input_section->flags & SEC_ALLOC) != 0 | |
1600 | && ((r_type != R_VAX_PC8 | |
1601 | && r_type != R_VAX_PC16 | |
1602 | && r_type != R_VAX_PC32) | |
1603 | || (!info->symbolic | |
f5385ebf | 1604 | || !h->def_regular))) |
90ace9e9 JT |
1605 | { |
1606 | Elf_Internal_Rela outrel; | |
947216bf | 1607 | bfd_byte *loc; |
b34976b6 | 1608 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1609 | |
1610 | /* When generating a shared object, these relocations | |
1611 | are copied into the output file to be resolved at run | |
1612 | time. */ | |
90ace9e9 JT |
1613 | if (sreloc == NULL) |
1614 | { | |
1615 | const char *name; | |
1616 | ||
1617 | name = (bfd_elf_string_from_elf_section | |
1618 | (input_bfd, | |
1619 | elf_elfheader (input_bfd)->e_shstrndx, | |
1620 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1621 | if (name == NULL) | |
b34976b6 | 1622 | return FALSE; |
90ace9e9 | 1623 | |
0112cd26 | 1624 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
90ace9e9 JT |
1625 | && strcmp (bfd_get_section_name (input_bfd, |
1626 | input_section), | |
1627 | name + 5) == 0); | |
1628 | ||
1629 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1630 | BFD_ASSERT (sreloc != NULL); | |
1631 | } | |
1632 | ||
b34976b6 AM |
1633 | skip = FALSE; |
1634 | relocate = FALSE; | |
90ace9e9 JT |
1635 | |
1636 | outrel.r_offset = | |
1637 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1638 | rel->r_offset); | |
1639 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1640 | skip = TRUE; |
90ace9e9 | 1641 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1642 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1643 | outrel.r_offset += (input_section->output_section->vma |
1644 | + input_section->output_offset); | |
1645 | ||
1646 | if (skip) | |
1647 | memset (&outrel, 0, sizeof outrel); | |
1648 | /* h->dynindx may be -1 if the symbol was marked to | |
1649 | become local. */ | |
1650 | else if (h != NULL | |
1651 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1652 | || !h->def_regular)) |
90ace9e9 JT |
1653 | { |
1654 | BFD_ASSERT (h->dynindx != -1); | |
1655 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1656 | outrel.r_addend = relocation + rel->r_addend; | |
1657 | } | |
1658 | else | |
1659 | { | |
1660 | if (r_type == R_VAX_32) | |
1661 | { | |
b34976b6 | 1662 | relocate = TRUE; |
90ace9e9 JT |
1663 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1664 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1665 | &contents[rel->r_offset]) == 0); | |
1666 | outrel.r_addend = relocation + rel->r_addend; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | long indx; | |
1671 | ||
8517fae7 | 1672 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1673 | indx = 0; |
1674 | else if (sec == NULL || sec->owner == NULL) | |
1675 | { | |
1676 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1677 | return FALSE; |
90ace9e9 JT |
1678 | } |
1679 | else | |
1680 | { | |
1681 | asection *osec; | |
1682 | ||
1683 | osec = sec->output_section; | |
1684 | indx = elf_section_data (osec)->dynindx; | |
1685 | BFD_ASSERT (indx > 0); | |
1686 | } | |
1687 | ||
1688 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1689 | outrel.r_addend = relocation + rel->r_addend; | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1694 | ".text") != 0 || |
90ace9e9 JT |
1695 | (info->shared |
1696 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1697 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1698 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1699 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1700 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1701 | { | |
1702 | if (h != NULL) | |
1703 | (*_bfd_error_handler) | |
1704 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1705 | bfd_get_filename (input_bfd), howto->name, | |
1706 | h->root.root.string, | |
1707 | bfd_get_section_name (input_bfd, input_section)); | |
1708 | else | |
1709 | (*_bfd_error_handler) | |
1710 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1711 | bfd_get_filename (input_bfd), howto->name, | |
1712 | outrel.r_addend, | |
1713 | bfd_get_section_name (input_bfd, input_section)); | |
1714 | } | |
947216bf AM |
1715 | loc = sreloc->contents; |
1716 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1717 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1718 | |
1719 | /* This reloc will be computed at runtime, so there's no | |
1720 | need to do anything now, except for R_VAX_32 | |
1721 | relocations that have been turned into | |
1722 | R_VAX_RELATIVE. */ | |
1723 | if (!relocate) | |
1724 | continue; | |
1725 | } | |
1726 | ||
1727 | break; | |
1728 | ||
1729 | case R_VAX_GNU_VTINHERIT: | |
1730 | case R_VAX_GNU_VTENTRY: | |
1731 | /* These are no-ops in the end. */ | |
1732 | continue; | |
1733 | ||
1734 | default: | |
1735 | break; | |
1736 | } | |
1737 | ||
b34976b6 | 1738 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1739 | So subtract the difference from the relocation amount since we can't |
1740 | add it to the offset. */ | |
90ace9e9 | 1741 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1742 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1743 | |
1744 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1745 | contents, rel->r_offset, | |
1746 | relocation, rel->r_addend); | |
1747 | ||
1748 | if (r != bfd_reloc_ok) | |
1749 | { | |
1750 | switch (r) | |
1751 | { | |
1752 | default: | |
1753 | case bfd_reloc_outofrange: | |
1754 | abort (); | |
1755 | case bfd_reloc_overflow: | |
1756 | { | |
1757 | const char *name; | |
1758 | ||
1759 | if (h != NULL) | |
dfeffb9f | 1760 | name = NULL; |
90ace9e9 JT |
1761 | else |
1762 | { | |
1763 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1764 | symtab_hdr->sh_link, | |
1765 | sym->st_name); | |
1766 | if (name == NULL) | |
b34976b6 | 1767 | return FALSE; |
90ace9e9 JT |
1768 | if (*name == '\0') |
1769 | name = bfd_section_name (input_bfd, sec); | |
1770 | } | |
1771 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1772 | (info, (h ? &h->root : NULL), name, howto->name, |
1773 | (bfd_vma) 0, input_bfd, input_section, | |
1774 | rel->r_offset))) | |
b34976b6 | 1775 | return FALSE; |
90ace9e9 JT |
1776 | } |
1777 | break; | |
1778 | } | |
1779 | } | |
1780 | } | |
1781 | ||
b34976b6 | 1782 | return TRUE; |
90ace9e9 JT |
1783 | } |
1784 | ||
1785 | /* Finish up dynamic symbol handling. We set the contents of various | |
1786 | dynamic sections here. */ | |
1787 | ||
b34976b6 | 1788 | static bfd_boolean |
ce71b576 NC |
1789 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1790 | struct elf_link_hash_entry *h, | |
1791 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1792 | { |
1793 | bfd *dynobj; | |
1794 | ||
1795 | dynobj = elf_hash_table (info)->dynobj; | |
1796 | ||
1797 | if (h->plt.offset != (bfd_vma) -1) | |
1798 | { | |
1799 | asection *splt; | |
1800 | asection *sgot; | |
1801 | asection *srela; | |
1802 | bfd_vma plt_index; | |
1803 | bfd_vma got_offset; | |
1804 | bfd_vma addend; | |
1805 | Elf_Internal_Rela rela; | |
947216bf | 1806 | bfd_byte *loc; |
90ace9e9 JT |
1807 | |
1808 | /* This symbol has an entry in the procedure linkage table. Set | |
1809 | it up. */ | |
90ace9e9 JT |
1810 | BFD_ASSERT (h->dynindx != -1); |
1811 | ||
1812 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1813 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1814 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1815 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1816 | ||
1817 | addend = 2 * (h->plt.offset & 1); | |
1818 | h->plt.offset &= ~1; | |
1819 | ||
1820 | /* Get the index in the procedure linkage table which | |
1821 | corresponds to this symbol. This is the index of this symbol | |
1822 | in all the symbols for which we are making plt entries. The | |
1823 | first entry in the procedure linkage table is reserved. */ | |
1824 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1825 | ||
1826 | /* Get the offset into the .got table of the entry that | |
1827 | corresponds to this function. Each .got entry is 4 bytes. | |
1828 | The first two are reserved. */ | |
1829 | got_offset = (plt_index + 3) * 4; | |
1830 | ||
1831 | /* Fill in the entry in the procedure linkage table. */ | |
1832 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1833 | PLT_ENTRY_SIZE); | |
1834 | ||
1835 | /* The offset is relative to the first extension word. */ | |
1836 | bfd_put_32 (output_bfd, | |
1837 | -(h->plt.offset + 8), | |
1838 | splt->contents + h->plt.offset + 4); | |
1839 | ||
1840 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1841 | splt->contents + h->plt.offset + 8); | |
1842 | ||
1843 | /* Fill in the entry in the global offset table. */ | |
1844 | bfd_put_32 (output_bfd, | |
1845 | (splt->output_section->vma | |
1846 | + splt->output_offset | |
1847 | + h->plt.offset) + addend, | |
1848 | sgot->contents + got_offset); | |
1849 | ||
1850 | /* Fill in the entry in the .rela.plt section. */ | |
1851 | rela.r_offset = (sgot->output_section->vma | |
1852 | + sgot->output_offset | |
1853 | + got_offset); | |
1854 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1855 | rela.r_addend = addend; | |
947216bf AM |
1856 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1857 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1858 | |
f5385ebf | 1859 | if (!h->def_regular) |
90ace9e9 JT |
1860 | { |
1861 | /* Mark the symbol as undefined, rather than as defined in | |
1862 | the .plt section. Leave the value alone. */ | |
1863 | sym->st_shndx = SHN_UNDEF; | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | if (h->got.offset != (bfd_vma) -1) | |
1868 | { | |
1869 | asection *sgot; | |
1870 | asection *srela; | |
1871 | Elf_Internal_Rela rela; | |
947216bf | 1872 | bfd_byte *loc; |
90ace9e9 JT |
1873 | |
1874 | /* This symbol has an entry in the global offset table. Set it | |
1875 | up. */ | |
90ace9e9 JT |
1876 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1877 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1878 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1879 | ||
1880 | rela.r_offset = (sgot->output_section->vma | |
1881 | + sgot->output_offset | |
1882 | + (h->got.offset &~ 1)); | |
1883 | ||
1884 | /* If the symbol was forced to be local because of a version file | |
1885 | locally we just want to emit a RELATIVE reloc. The entry in | |
1886 | the global offset table will already have been initialized in | |
1887 | the relocate_section function. */ | |
1888 | if (info->shared | |
1889 | && h->dynindx == -1 | |
f5385ebf | 1890 | && h->def_regular) |
90ace9e9 JT |
1891 | { |
1892 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1893 | } | |
1894 | else | |
1895 | { | |
1896 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1897 | } | |
1898 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1899 | (sgot->contents | |
1900 | + (h->got.offset & ~1))); | |
1901 | ||
947216bf AM |
1902 | loc = srela->contents; |
1903 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1904 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1905 | } |
1906 | ||
f5385ebf | 1907 | if (h->needs_copy) |
90ace9e9 JT |
1908 | { |
1909 | asection *s; | |
1910 | Elf_Internal_Rela rela; | |
947216bf | 1911 | bfd_byte *loc; |
90ace9e9 JT |
1912 | |
1913 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1914 | BFD_ASSERT (h->dynindx != -1 |
1915 | && (h->root.type == bfd_link_hash_defined | |
1916 | || h->root.type == bfd_link_hash_defweak)); | |
1917 | ||
1918 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1919 | ".rela.bss"); | |
1920 | BFD_ASSERT (s != NULL); | |
1921 | ||
1922 | rela.r_offset = (h->root.u.def.value | |
1923 | + h->root.u.def.section->output_section->vma | |
1924 | + h->root.u.def.section->output_offset); | |
1925 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1926 | rela.r_addend = 0; | |
947216bf AM |
1927 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1928 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1929 | } |
1930 | ||
1931 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1932 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 1933 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1934 | sym->st_shndx = SHN_ABS; |
1935 | ||
b34976b6 | 1936 | return TRUE; |
90ace9e9 JT |
1937 | } |
1938 | ||
1939 | /* Finish up the dynamic sections. */ | |
1940 | ||
b34976b6 | 1941 | static bfd_boolean |
ce71b576 | 1942 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1943 | { |
1944 | bfd *dynobj; | |
1945 | asection *sgot; | |
1946 | asection *sdyn; | |
1947 | ||
1948 | dynobj = elf_hash_table (info)->dynobj; | |
1949 | ||
1950 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1951 | BFD_ASSERT (sgot != NULL); | |
1952 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1953 | ||
1954 | if (elf_hash_table (info)->dynamic_sections_created) | |
1955 | { | |
1956 | asection *splt; | |
1957 | Elf32_External_Dyn *dyncon, *dynconend; | |
1958 | ||
1959 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1960 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1961 | ||
1962 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1963 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1964 | for (; dyncon < dynconend; dyncon++) |
1965 | { | |
1966 | Elf_Internal_Dyn dyn; | |
1967 | const char *name; | |
1968 | asection *s; | |
1969 | ||
1970 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1971 | ||
1972 | switch (dyn.d_tag) | |
1973 | { | |
1974 | default: | |
1975 | break; | |
1976 | ||
1977 | case DT_PLTGOT: | |
1978 | name = ".got"; | |
1979 | goto get_vma; | |
1980 | case DT_JMPREL: | |
1981 | name = ".rela.plt"; | |
1982 | get_vma: | |
1983 | s = bfd_get_section_by_name (output_bfd, name); | |
1984 | BFD_ASSERT (s != NULL); | |
1985 | dyn.d_un.d_ptr = s->vma; | |
1986 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1987 | break; | |
1988 | ||
1989 | case DT_PLTRELSZ: | |
1990 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1991 | BFD_ASSERT (s != NULL); | |
eea6121a | 1992 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
1993 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1994 | break; | |
1995 | ||
1996 | case DT_RELASZ: | |
1997 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1998 | not be included in the overall relocs (DT_RELA). | |
1999 | Therefore, we override the DT_RELASZ entry here to | |
2000 | make it not include the JMPREL relocs. Since the | |
2001 | linker script arranges for .rela.plt to follow all | |
2002 | other relocation sections, we don't have to worry | |
2003 | about changing the DT_RELA entry. */ | |
2004 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2005 | if (s != NULL) | |
eea6121a | 2006 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2007 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2008 | break; | |
2009 | } | |
2010 | } | |
2011 | ||
2012 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2013 | if (splt->size > 0) |
90ace9e9 JT |
2014 | { |
2015 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2016 | bfd_put_32 (output_bfd, | |
2017 | (sgot->output_section->vma | |
2018 | + sgot->output_offset + 4 | |
2019 | - (splt->output_section->vma + 6)), | |
2020 | splt->contents + 2); | |
2021 | bfd_put_32 (output_bfd, | |
2022 | (sgot->output_section->vma | |
2023 | + sgot->output_offset + 8 | |
2024 | - (splt->output_section->vma + 12)), | |
2025 | splt->contents + 8); | |
cedb70c5 | 2026 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2027 | = PLT_ENTRY_SIZE; |
2028 | } | |
2029 | } | |
2030 | ||
2031 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2032 | if (sgot->size > 0) |
90ace9e9 JT |
2033 | { |
2034 | if (sdyn == NULL) | |
2035 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2036 | else | |
2037 | bfd_put_32 (output_bfd, | |
2038 | sdyn->output_section->vma + sdyn->output_offset, | |
2039 | sgot->contents); | |
2040 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2041 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2042 | } | |
2043 | ||
2044 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2045 | ||
b34976b6 | 2046 | return TRUE; |
90ace9e9 JT |
2047 | } |
2048 | ||
2049 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec | |
2050 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2051 | #define ELF_MACHINE_CODE EM_VAX | |
2052 | #define ELF_MAXPAGESIZE 0x1000 | |
2053 | ||
2054 | #define elf_backend_create_dynamic_sections \ | |
2055 | _bfd_elf_create_dynamic_sections | |
2056 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2057 | elf_vax_link_hash_table_create | |
c152c796 | 2058 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2059 | |
2060 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2061 | #define elf_backend_adjust_dynamic_symbol \ | |
2062 | elf_vax_adjust_dynamic_symbol | |
2063 | #define elf_backend_size_dynamic_sections \ | |
2064 | elf_vax_size_dynamic_sections | |
2065 | #define elf_backend_relocate_section elf_vax_relocate_section | |
2066 | #define elf_backend_finish_dynamic_symbol \ | |
2067 | elf_vax_finish_dynamic_symbol | |
2068 | #define elf_backend_finish_dynamic_sections \ | |
2069 | elf_vax_finish_dynamic_sections | |
2070 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook | |
2071 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2072 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2073 | elf32_vax_merge_private_bfd_data | |
2074 | #define bfd_elf32_bfd_set_private_flags \ | |
2075 | elf32_vax_set_private_flags | |
2076 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2077 | elf32_vax_print_private_bfd_data | |
2078 | ||
2079 | #define elf_backend_can_gc_sections 1 | |
2080 | #define elf_backend_want_got_plt 1 | |
2081 | #define elf_backend_plt_readonly 1 | |
2082 | #define elf_backend_want_plt_sym 0 | |
2083 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2084 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2085 | |
2086 | #include "elf32-target.h" |