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90ace9e9 | 1 | /* VAX series support for 32-bit ELF |
b90efa5b | 2 | Copyright (C) 1993-2015 Free Software Foundation, Inc. |
90ace9e9 JT |
3 | Contributed by Matt Thomas <matt@3am-software.com>. |
4 | ||
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
90ace9e9 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 10 | (at your option) any later version. |
90ace9e9 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
90ace9e9 | 16 | |
ae9a127f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
90ace9e9 | 21 | |
90ace9e9 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
90ace9e9 JT |
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 *); | |
6db7e006 MR |
49 | static bfd_vma elf_vax_plt_sym_val (bfd_vma, const asection *, |
50 | const arelent *); | |
ce71b576 NC |
51 | |
52 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
53 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
2c3fc389 | 54 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, void *); |
90ace9e9 JT |
55 | |
56 | static reloc_howto_type howto_table[] = { | |
57 | HOWTO (R_VAX_NONE, /* type */ | |
58 | 0, /* rightshift */ | |
59 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
60 | 0, /* bitsize */ | |
b34976b6 | 61 | FALSE, /* pc_relative */ |
90ace9e9 JT |
62 | 0, /* bitpos */ |
63 | complain_overflow_dont, /* complain_on_overflow */ | |
64 | bfd_elf_generic_reloc, /* special_function */ | |
65 | "R_VAX_NONE", /* name */ | |
b34976b6 | 66 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
67 | 0, /* src_mask */ |
68 | 0x00000000, /* dst_mask */ | |
b34976b6 | 69 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
70 | |
71 | HOWTO (R_VAX_32, /* type */ | |
72 | 0, /* rightshift */ | |
73 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
74 | 32, /* bitsize */ | |
b34976b6 | 75 | FALSE, /* pc_relative */ |
90ace9e9 JT |
76 | 0, /* bitpos */ |
77 | complain_overflow_bitfield, /* complain_on_overflow */ | |
78 | bfd_elf_generic_reloc, /* special_function */ | |
79 | "R_VAX_32", /* name */ | |
b34976b6 | 80 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
81 | 0, /* src_mask */ |
82 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 83 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
84 | |
85 | HOWTO (R_VAX_16, /* type */ | |
86 | 0, /* rightshift */ | |
87 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
88 | 16, /* bitsize */ | |
b34976b6 | 89 | FALSE, /* pc_relative */ |
90ace9e9 JT |
90 | 0, /* bitpos */ |
91 | complain_overflow_bitfield, /* complain_on_overflow */ | |
92 | bfd_elf_generic_reloc, /* special_function */ | |
93 | "R_VAX_16", /* name */ | |
b34976b6 | 94 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
95 | 0, /* src_mask */ |
96 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 97 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
98 | |
99 | HOWTO (R_VAX_8, /* type */ | |
100 | 0, /* rightshift */ | |
101 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
102 | 8, /* bitsize */ | |
b34976b6 | 103 | FALSE, /* pc_relative */ |
90ace9e9 JT |
104 | 0, /* bitpos */ |
105 | complain_overflow_bitfield, /* complain_on_overflow */ | |
106 | bfd_elf_generic_reloc, /* special_function */ | |
107 | "R_VAX_8", /* name */ | |
b34976b6 | 108 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
109 | 0, /* src_mask */ |
110 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 111 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
112 | |
113 | HOWTO (R_VAX_PC32, /* type */ | |
114 | 0, /* rightshift */ | |
115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
116 | 32, /* bitsize */ | |
b34976b6 | 117 | TRUE, /* pc_relative */ |
90ace9e9 JT |
118 | 0, /* bitpos */ |
119 | complain_overflow_bitfield, /* complain_on_overflow */ | |
120 | bfd_elf_generic_reloc, /* special_function */ | |
121 | "R_VAX_PC32", /* name */ | |
b34976b6 | 122 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
123 | 0, /* src_mask */ |
124 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 125 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
126 | |
127 | HOWTO (R_VAX_PC16, /* type */ | |
128 | 0, /* rightshift */ | |
129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 16, /* bitsize */ | |
b34976b6 | 131 | TRUE, /* pc_relative */ |
90ace9e9 JT |
132 | 0, /* bitpos */ |
133 | complain_overflow_signed, /* complain_on_overflow */ | |
134 | bfd_elf_generic_reloc, /* special_function */ | |
135 | "R_VAX_PC16", /* name */ | |
b34976b6 | 136 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
137 | 0, /* src_mask */ |
138 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 139 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
140 | |
141 | HOWTO (R_VAX_PC8, /* type */ | |
142 | 0, /* rightshift */ | |
143 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
144 | 8, /* bitsize */ | |
b34976b6 | 145 | TRUE, /* pc_relative */ |
90ace9e9 JT |
146 | 0, /* bitpos */ |
147 | complain_overflow_signed, /* complain_on_overflow */ | |
148 | bfd_elf_generic_reloc, /* special_function */ | |
149 | "R_VAX_PC8", /* name */ | |
b34976b6 | 150 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
151 | 0, /* src_mask */ |
152 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 153 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
154 | |
155 | HOWTO (R_VAX_GOT32, /* type */ | |
156 | 0, /* rightshift */ | |
157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
158 | 32, /* bitsize */ | |
b34976b6 | 159 | TRUE, /* pc_relative */ |
90ace9e9 JT |
160 | 0, /* bitpos */ |
161 | complain_overflow_bitfield, /* complain_on_overflow */ | |
162 | bfd_elf_generic_reloc, /* special_function */ | |
163 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 164 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
165 | 0, /* src_mask */ |
166 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 167 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
168 | |
169 | EMPTY_HOWTO (-1), | |
170 | EMPTY_HOWTO (-1), | |
171 | EMPTY_HOWTO (-1), | |
172 | EMPTY_HOWTO (-1), | |
173 | EMPTY_HOWTO (-1), | |
174 | ||
175 | HOWTO (R_VAX_PLT32, /* type */ | |
176 | 0, /* rightshift */ | |
177 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
178 | 32, /* bitsize */ | |
b34976b6 | 179 | TRUE, /* pc_relative */ |
90ace9e9 JT |
180 | 0, /* bitpos */ |
181 | complain_overflow_bitfield, /* complain_on_overflow */ | |
182 | bfd_elf_generic_reloc, /* special_function */ | |
183 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 184 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
185 | 0, /* src_mask */ |
186 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 187 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
188 | |
189 | EMPTY_HOWTO (-1), | |
190 | EMPTY_HOWTO (-1), | |
191 | EMPTY_HOWTO (-1), | |
192 | EMPTY_HOWTO (-1), | |
193 | EMPTY_HOWTO (-1), | |
194 | ||
195 | HOWTO (R_VAX_COPY, /* type */ | |
196 | 0, /* rightshift */ | |
197 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 0, /* bitsize */ | |
b34976b6 | 199 | FALSE, /* pc_relative */ |
90ace9e9 JT |
200 | 0, /* bitpos */ |
201 | complain_overflow_dont, /* complain_on_overflow */ | |
202 | bfd_elf_generic_reloc, /* special_function */ | |
203 | "R_VAX_COPY", /* name */ | |
b34976b6 | 204 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
205 | 0, /* src_mask */ |
206 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 207 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
208 | |
209 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
210 | 0, /* rightshift */ | |
211 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
212 | 32, /* bitsize */ | |
b34976b6 | 213 | FALSE, /* pc_relative */ |
90ace9e9 JT |
214 | 0, /* bitpos */ |
215 | complain_overflow_dont, /* complain_on_overflow */ | |
216 | bfd_elf_generic_reloc, /* special_function */ | |
217 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 218 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
219 | 0, /* src_mask */ |
220 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 221 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
222 | |
223 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
224 | 0, /* rightshift */ | |
225 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
226 | 32, /* bitsize */ | |
b34976b6 | 227 | FALSE, /* pc_relative */ |
90ace9e9 JT |
228 | 0, /* bitpos */ |
229 | complain_overflow_dont, /* complain_on_overflow */ | |
230 | bfd_elf_generic_reloc, /* special_function */ | |
231 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 232 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
233 | 0, /* src_mask */ |
234 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 235 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
236 | |
237 | HOWTO (R_VAX_RELATIVE, /* type */ | |
238 | 0, /* rightshift */ | |
239 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
240 | 32, /* bitsize */ | |
b34976b6 | 241 | FALSE, /* pc_relative */ |
90ace9e9 JT |
242 | 0, /* bitpos */ |
243 | complain_overflow_dont, /* complain_on_overflow */ | |
244 | bfd_elf_generic_reloc, /* special_function */ | |
245 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 246 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
247 | 0, /* src_mask */ |
248 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 249 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
250 | |
251 | /* GNU extension to record C++ vtable hierarchy */ | |
252 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
253 | 0, /* rightshift */ | |
254 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
255 | 0, /* bitsize */ | |
b34976b6 | 256 | FALSE, /* pc_relative */ |
90ace9e9 JT |
257 | 0, /* bitpos */ |
258 | complain_overflow_dont, /* complain_on_overflow */ | |
259 | NULL, /* special_function */ | |
260 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 261 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
262 | 0, /* src_mask */ |
263 | 0, /* dst_mask */ | |
b34976b6 | 264 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
265 | |
266 | /* GNU extension to record C++ vtable member usage */ | |
267 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
268 | 0, /* rightshift */ | |
269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
270 | 0, /* bitsize */ | |
b34976b6 | 271 | FALSE, /* pc_relative */ |
90ace9e9 JT |
272 | 0, /* bitpos */ |
273 | complain_overflow_dont, /* complain_on_overflow */ | |
274 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
275 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 276 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
277 | 0, /* src_mask */ |
278 | 0, /* dst_mask */ | |
b34976b6 | 279 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
280 | }; |
281 | ||
282 | static void | |
ce71b576 NC |
283 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
284 | Elf_Internal_Rela *dst) | |
90ace9e9 | 285 | { |
cd21f5da NC |
286 | unsigned int r_type; |
287 | ||
288 | r_type = ELF32_R_TYPE (dst->r_info); | |
289 | if (r_type >= R_VAX_max) | |
290 | { | |
291 | (*_bfd_error_handler) (_("%A: unrecognised VAX reloc number: %d"), | |
292 | abfd, r_type); | |
293 | bfd_set_error (bfd_error_bad_value); | |
294 | r_type = R_VAX_NONE; | |
295 | } | |
296 | cache_ptr->howto = &howto_table[r_type]; | |
90ace9e9 JT |
297 | } |
298 | ||
299 | #define elf_info_to_howto rtype_to_howto | |
300 | ||
301 | static const struct | |
302 | { | |
303 | bfd_reloc_code_real_type bfd_val; | |
304 | int elf_val; | |
305 | } reloc_map[] = { | |
306 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
307 | { BFD_RELOC_32, R_VAX_32 }, | |
308 | { BFD_RELOC_16, R_VAX_16 }, | |
309 | { BFD_RELOC_8, R_VAX_8 }, | |
310 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
311 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
312 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
313 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
314 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
315 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
316 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
317 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
318 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
319 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
320 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
321 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
322 | }; | |
323 | ||
324 | static reloc_howto_type * | |
ce71b576 | 325 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
326 | { |
327 | unsigned int i; | |
328 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
329 | { | |
330 | if (reloc_map[i].bfd_val == code) | |
331 | return &howto_table[reloc_map[i].elf_val]; | |
332 | } | |
333 | return 0; | |
334 | } | |
335 | ||
157090f7 AM |
336 | static reloc_howto_type * |
337 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
338 | const char *r_name) | |
339 | { | |
340 | unsigned int i; | |
341 | ||
342 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
343 | if (howto_table[i].name != NULL | |
344 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
345 | return &howto_table[i]; | |
346 | ||
347 | return NULL; | |
348 | } | |
349 | ||
90ace9e9 | 350 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 351 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
90ace9e9 JT |
352 | #define ELF_ARCH bfd_arch_vax |
353 | /* end code generated by elf.el */ | |
90ace9e9 JT |
354 | \f |
355 | /* Functions for the VAX ELF linker. */ | |
356 | ||
357 | /* The name of the dynamic interpreter. This is put in the .interp | |
358 | section. */ | |
359 | ||
360 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
361 | ||
362 | /* The size in bytes of an entry in the procedure linkage table. */ | |
363 | ||
364 | #define PLT_ENTRY_SIZE 12 | |
365 | ||
366 | /* The first entry in a procedure linkage table looks like this. See | |
367 | the SVR4 ABI VAX supplement to see how this works. */ | |
368 | ||
369 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
370 | { | |
371 | 0xdd, 0xef, /* pushl l^ */ | |
372 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
373 | 0x17, 0xff, /* jmp @L^(pc) */ | |
374 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
375 | }; | |
376 | ||
377 | /* Subsequent entries in a procedure linkage table look like this. */ | |
378 | ||
379 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
380 | { | |
6c4fb25a | 381 | 0xfc, 0x0f, /* .word ^M<r11:r2> */ |
71f136d6 | 382 | 0x16, 0xef, /* jsb L^(pc) */ |
90ace9e9 JT |
383 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ |
384 | 0, 0, 0, 0, /* index into .rela.plt */ | |
385 | }; | |
386 | ||
387 | /* The VAX linker needs to keep track of the number of relocs that it | |
388 | decides to copy in check_relocs for each symbol. This is so that it | |
389 | can discard PC relative relocs if it doesn't need them when linking | |
390 | with -Bsymbolic. We store the information in a field extending the | |
391 | regular ELF linker hash table. */ | |
392 | ||
393 | /* This structure keeps track of the number of PC relative relocs we have | |
394 | copied for a given symbol. */ | |
395 | ||
396 | struct elf_vax_pcrel_relocs_copied | |
397 | { | |
398 | /* Next section. */ | |
399 | struct elf_vax_pcrel_relocs_copied *next; | |
400 | /* A section in dynobj. */ | |
401 | asection *section; | |
402 | /* Number of relocs copied in this section. */ | |
403 | bfd_size_type count; | |
404 | }; | |
405 | ||
406 | /* VAX ELF linker hash entry. */ | |
407 | ||
408 | struct elf_vax_link_hash_entry | |
409 | { | |
410 | struct elf_link_hash_entry root; | |
411 | ||
412 | /* Number of PC relative relocs copied for this symbol. */ | |
413 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
414 | ||
415 | bfd_vma got_addend; | |
416 | }; | |
417 | ||
90ace9e9 JT |
418 | /* Declare this now that the above structures are defined. */ |
419 | ||
ce71b576 | 420 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
4dfe6ac6 | 421 | void *); |
90ace9e9 | 422 | |
b29635ba JT |
423 | /* Declare this now that the above structures are defined. */ |
424 | ||
ce71b576 | 425 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
4dfe6ac6 | 426 | void *); |
b29635ba | 427 | |
90ace9e9 JT |
428 | /* Traverse an VAX ELF linker hash table. */ |
429 | ||
430 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
431 | (elf_link_hash_traverse \ | |
4dfe6ac6 | 432 | ((table), \ |
2c3fc389 | 433 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
90ace9e9 JT |
434 | (info))) |
435 | ||
90ace9e9 JT |
436 | /* Create an entry in an VAX ELF linker hash table. */ |
437 | ||
438 | static struct bfd_hash_entry * | |
ce71b576 NC |
439 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
440 | struct bfd_hash_table *table, | |
441 | const char *string) | |
90ace9e9 JT |
442 | { |
443 | struct elf_vax_link_hash_entry *ret = | |
444 | (struct elf_vax_link_hash_entry *) entry; | |
445 | ||
446 | /* Allocate the structure if it has not already been allocated by a | |
447 | subclass. */ | |
ce71b576 | 448 | if (ret == NULL) |
90ace9e9 JT |
449 | ret = ((struct elf_vax_link_hash_entry *) |
450 | bfd_hash_allocate (table, | |
451 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 452 | if (ret == NULL) |
90ace9e9 JT |
453 | return (struct bfd_hash_entry *) ret; |
454 | ||
455 | /* Call the allocation method of the superclass. */ | |
456 | ret = ((struct elf_vax_link_hash_entry *) | |
457 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
458 | table, string)); | |
ce71b576 | 459 | if (ret != NULL) |
90ace9e9 JT |
460 | { |
461 | ret->pcrel_relocs_copied = NULL; | |
462 | } | |
463 | ||
464 | return (struct bfd_hash_entry *) ret; | |
465 | } | |
466 | ||
467 | /* Create an VAX ELF linker hash table. */ | |
468 | ||
469 | static struct bfd_link_hash_table * | |
ce71b576 | 470 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 | 471 | { |
4dfe6ac6 NC |
472 | struct elf_link_hash_table *ret; |
473 | bfd_size_type amt = sizeof (struct elf_link_hash_table); | |
90ace9e9 | 474 | |
7bf52ea2 | 475 | ret = bfd_zmalloc (amt); |
ce71b576 | 476 | if (ret == NULL) |
90ace9e9 JT |
477 | return NULL; |
478 | ||
4dfe6ac6 | 479 | if (!_bfd_elf_link_hash_table_init (ret, abfd, |
66eb6687 | 480 | elf_vax_link_hash_newfunc, |
4dfe6ac6 NC |
481 | sizeof (struct elf_vax_link_hash_entry), |
482 | GENERIC_ELF_DATA)) | |
90ace9e9 JT |
483 | { |
484 | free (ret); | |
485 | return NULL; | |
486 | } | |
487 | ||
4dfe6ac6 | 488 | return &ret->root; |
90ace9e9 JT |
489 | } |
490 | ||
491 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 492 | static bfd_boolean |
ce71b576 | 493 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
494 | { |
495 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
496 | elf_flags_init (abfd) = TRUE; |
497 | return TRUE; | |
90ace9e9 JT |
498 | } |
499 | ||
500 | /* Merge backend specific data from an object file to the output | |
501 | object file when linking. */ | |
b34976b6 | 502 | static bfd_boolean |
ce71b576 | 503 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 | 504 | { |
90ace9e9 JT |
505 | flagword in_flags; |
506 | ||
507 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
508 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 509 | return TRUE; |
90ace9e9 JT |
510 | |
511 | in_flags = elf_elfheader (ibfd)->e_flags; | |
90ace9e9 JT |
512 | |
513 | if (!elf_flags_init (obfd)) | |
514 | { | |
b34976b6 | 515 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
516 | elf_elfheader (obfd)->e_flags = in_flags; |
517 | } | |
518 | ||
b34976b6 | 519 | return TRUE; |
90ace9e9 JT |
520 | } |
521 | ||
522 | /* Display the flags field */ | |
b34976b6 | 523 | static bfd_boolean |
2c3fc389 | 524 | elf32_vax_print_private_bfd_data (bfd *abfd, void * ptr) |
90ace9e9 JT |
525 | { |
526 | FILE *file = (FILE *) ptr; | |
527 | ||
528 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
529 | ||
530 | /* Print normal ELF private data. */ | |
531 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
532 | ||
533 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
534 | ||
535 | /* xgettext:c-format */ | |
536 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
537 | ||
179d3252 | 538 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
539 | fprintf (file, _(" [nonpic]")); |
540 | ||
179d3252 | 541 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
542 | fprintf (file, _(" [d-float]")); |
543 | ||
179d3252 | 544 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
545 | fprintf (file, _(" [g-float]")); |
546 | ||
547 | fputc ('\n', file); | |
548 | ||
b34976b6 | 549 | return TRUE; |
90ace9e9 JT |
550 | } |
551 | /* Look through the relocs for a section during the first phase, and | |
552 | allocate space in the global offset table or procedure linkage | |
553 | table. */ | |
554 | ||
b34976b6 | 555 | static bfd_boolean |
ce71b576 NC |
556 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
557 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
558 | { |
559 | bfd *dynobj; | |
560 | Elf_Internal_Shdr *symtab_hdr; | |
561 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
562 | const Elf_Internal_Rela *rel; |
563 | const Elf_Internal_Rela *rel_end; | |
564 | asection *sgot; | |
565 | asection *srelgot; | |
566 | asection *sreloc; | |
567 | ||
1049f94e | 568 | if (info->relocatable) |
b34976b6 | 569 | return TRUE; |
90ace9e9 JT |
570 | |
571 | dynobj = elf_hash_table (info)->dynobj; | |
572 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
573 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
574 | |
575 | sgot = NULL; | |
576 | srelgot = NULL; | |
577 | sreloc = NULL; | |
578 | ||
579 | rel_end = relocs + sec->reloc_count; | |
580 | for (rel = relocs; rel < rel_end; rel++) | |
581 | { | |
582 | unsigned long r_symndx; | |
583 | struct elf_link_hash_entry *h; | |
584 | ||
585 | r_symndx = ELF32_R_SYM (rel->r_info); | |
586 | ||
587 | if (r_symndx < symtab_hdr->sh_info) | |
588 | h = NULL; | |
589 | else | |
973a3492 L |
590 | { |
591 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
592 | while (h->root.type == bfd_link_hash_indirect | |
593 | || h->root.type == bfd_link_hash_warning) | |
594 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
595 | |
596 | /* PR15323, ref flags aren't set for references in the same | |
597 | object. */ | |
598 | h->root.non_ir_ref = 1; | |
973a3492 | 599 | } |
90ace9e9 JT |
600 | |
601 | switch (ELF32_R_TYPE (rel->r_info)) | |
602 | { | |
603 | case R_VAX_GOT32: | |
fe723c87 | 604 | BFD_ASSERT (h != NULL); |
90ace9e9 | 605 | |
7b6021f1 MR |
606 | /* If this is a local symbol, we resolve it directly without |
607 | creating a global offset table entry. */ | |
125b5bac MR |
608 | if (h->forced_local |
609 | || h == elf_hash_table (info)->hgot | |
610 | || h == elf_hash_table (info)->hplt) | |
7b6021f1 MR |
611 | break; |
612 | ||
90ace9e9 JT |
613 | /* This symbol requires a global offset table entry. */ |
614 | ||
615 | if (dynobj == NULL) | |
616 | { | |
617 | /* Create the .got section. */ | |
618 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
619 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 620 | return FALSE; |
90ace9e9 JT |
621 | } |
622 | ||
623 | if (sgot == NULL) | |
624 | { | |
3d4d4302 | 625 | sgot = bfd_get_linker_section (dynobj, ".got"); |
90ace9e9 JT |
626 | BFD_ASSERT (sgot != NULL); |
627 | } | |
628 | ||
629 | if (srelgot == NULL | |
630 | && (h != NULL || info->shared)) | |
631 | { | |
3d4d4302 | 632 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
90ace9e9 JT |
633 | if (srelgot == NULL) |
634 | { | |
3d4d4302 AM |
635 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
636 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
637 | | SEC_READONLY); | |
638 | ||
639 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
640 | ".rela.got", | |
641 | flags); | |
90ace9e9 | 642 | if (srelgot == NULL |
90ace9e9 | 643 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 644 | return FALSE; |
90ace9e9 JT |
645 | } |
646 | } | |
647 | ||
648 | if (h != NULL) | |
649 | { | |
650 | struct elf_vax_link_hash_entry *eh; | |
651 | ||
652 | eh = (struct elf_vax_link_hash_entry *) h; | |
653 | if (h->got.refcount == -1) | |
654 | { | |
655 | h->got.refcount = 1; | |
656 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
657 | } |
658 | else | |
659 | { | |
660 | h->got.refcount++; | |
661 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
662 | (*_bfd_error_handler) | |
fe723c87 MT |
663 | (_("%s: warning: GOT addend of %ld to `%s' does" |
664 | " not match previous GOT addend of %ld"), | |
665 | bfd_get_filename (abfd), rel->r_addend, | |
666 | h->root.root.string, | |
667 | eh->got_addend); | |
cedb70c5 | 668 | |
90ace9e9 JT |
669 | } |
670 | } | |
671 | break; | |
672 | ||
673 | case R_VAX_PLT32: | |
674 | /* This symbol requires a procedure linkage table entry. We | |
675 | actually build the entry in adjust_dynamic_symbol, | |
676 | because this might be a case of linking PIC code which is | |
677 | never referenced by a dynamic object, in which case we | |
678 | don't need to generate a procedure linkage table entry | |
679 | after all. */ | |
125b5bac | 680 | BFD_ASSERT (h != NULL); |
90ace9e9 JT |
681 | |
682 | /* If this is a local symbol, we resolve it directly without | |
683 | creating a procedure linkage table entry. */ | |
125b5bac | 684 | if (h->forced_local) |
fe723c87 | 685 | break; |
90ace9e9 | 686 | |
f5385ebf | 687 | h->needs_plt = 1; |
90ace9e9 JT |
688 | if (h->plt.refcount == -1) |
689 | h->plt.refcount = 1; | |
690 | else | |
691 | h->plt.refcount++; | |
692 | break; | |
693 | ||
694 | case R_VAX_PC8: | |
695 | case R_VAX_PC16: | |
696 | case R_VAX_PC32: | |
697 | /* If we are creating a shared library and this is not a local | |
698 | symbol, we need to copy the reloc into the shared library. | |
699 | However when linking with -Bsymbolic and this is a global | |
700 | symbol which is defined in an object we are including in the | |
701 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
702 | reloc directly. At this point we have not seen all the input | |
703 | files, so it is possible that DEF_REGULAR is not set now but | |
704 | will be set later (it is never cleared). We account for that | |
705 | possibility below by storing information in the | |
706 | pcrel_relocs_copied field of the hash table entry. */ | |
707 | if (!(info->shared | |
708 | && (sec->flags & SEC_ALLOC) != 0 | |
709 | && h != NULL | |
710 | && (!info->symbolic | |
f5385ebf | 711 | || !h->def_regular))) |
90ace9e9 | 712 | { |
7b6021f1 MR |
713 | if (h != NULL |
714 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
715 | && !h->forced_local) | |
90ace9e9 JT |
716 | { |
717 | /* Make sure a plt entry is created for this symbol if | |
718 | it turns out to be a function defined by a dynamic | |
719 | object. */ | |
720 | if (h->plt.refcount == -1) | |
721 | h->plt.refcount = 1; | |
722 | else | |
723 | h->plt.refcount++; | |
724 | } | |
725 | break; | |
726 | } | |
7b6021f1 MR |
727 | /* If this is a local symbol, we can resolve it directly. */ |
728 | if (h != NULL | |
729 | && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
730 | || h->forced_local)) | |
fe723c87 MT |
731 | break; |
732 | ||
90ace9e9 JT |
733 | /* Fall through. */ |
734 | case R_VAX_8: | |
735 | case R_VAX_16: | |
736 | case R_VAX_32: | |
7b6021f1 | 737 | if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
90ace9e9 JT |
738 | { |
739 | /* Make sure a plt entry is created for this symbol if it | |
740 | turns out to be a function defined by a dynamic object. */ | |
741 | if (h->plt.refcount == -1) | |
742 | h->plt.refcount = 1; | |
743 | else | |
744 | h->plt.refcount++; | |
745 | } | |
746 | ||
747 | /* If we are creating a shared library, we need to copy the | |
748 | reloc into the shared library. */ | |
749 | if (info->shared | |
750 | && (sec->flags & SEC_ALLOC) != 0) | |
751 | { | |
752 | /* When creating a shared object, we must copy these | |
753 | reloc types into the output file. We create a reloc | |
754 | section in dynobj and make room for this reloc. */ | |
755 | if (sreloc == NULL) | |
756 | { | |
83bac4b0 NC |
757 | sreloc = _bfd_elf_make_dynamic_reloc_section |
758 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
90ace9e9 | 759 | |
83bac4b0 | 760 | if (sreloc == NULL) |
b34976b6 | 761 | return FALSE; |
90ace9e9 | 762 | |
90ace9e9 JT |
763 | if (sec->flags & SEC_READONLY) |
764 | info->flags |= DF_TEXTREL; | |
765 | } | |
766 | ||
eea6121a | 767 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
768 | |
769 | /* If we are linking with -Bsymbolic, we count the number of | |
770 | PC relative relocations we have entered for this symbol, | |
771 | so that we can discard them again if the symbol is later | |
772 | defined by a regular object. Note that this function is | |
19852a2a | 773 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
774 | which means that h is really a pointer to an |
775 | elf_vax_link_hash_entry. */ | |
776 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
777 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
778 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
779 | && info->symbolic) |
780 | { | |
781 | struct elf_vax_link_hash_entry *eh; | |
782 | struct elf_vax_pcrel_relocs_copied *p; | |
783 | ||
784 | eh = (struct elf_vax_link_hash_entry *) h; | |
785 | ||
786 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
787 | if (p->section == sreloc) | |
788 | break; | |
789 | ||
790 | if (p == NULL) | |
791 | { | |
792 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
793 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
794 | if (p == NULL) | |
b34976b6 | 795 | return FALSE; |
90ace9e9 JT |
796 | p->next = eh->pcrel_relocs_copied; |
797 | eh->pcrel_relocs_copied = p; | |
798 | p->section = sreloc; | |
799 | p->count = 0; | |
800 | } | |
801 | ||
802 | ++p->count; | |
803 | } | |
804 | } | |
805 | ||
806 | break; | |
807 | ||
808 | /* This relocation describes the C++ object vtable hierarchy. | |
809 | Reconstruct it for later use during GC. */ | |
810 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 811 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 812 | return FALSE; |
90ace9e9 JT |
813 | break; |
814 | ||
815 | /* This relocation describes which C++ vtable entries are actually | |
816 | used. Record for later use during GC. */ | |
817 | case R_VAX_GNU_VTENTRY: | |
d17e0c6e JB |
818 | BFD_ASSERT (h != NULL); |
819 | if (h != NULL | |
820 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 821 | return FALSE; |
90ace9e9 JT |
822 | break; |
823 | ||
824 | default: | |
825 | break; | |
826 | } | |
827 | } | |
828 | ||
b34976b6 | 829 | return TRUE; |
90ace9e9 JT |
830 | } |
831 | ||
832 | /* Return the section that should be marked against GC for a given | |
833 | relocation. */ | |
834 | ||
835 | static asection * | |
ce71b576 | 836 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 837 | struct bfd_link_info *info, |
ce71b576 NC |
838 | Elf_Internal_Rela *rel, |
839 | struct elf_link_hash_entry *h, | |
840 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
841 | { |
842 | if (h != NULL) | |
07adf181 AM |
843 | switch (ELF32_R_TYPE (rel->r_info)) |
844 | { | |
845 | case R_VAX_GNU_VTINHERIT: | |
846 | case R_VAX_GNU_VTENTRY: | |
847 | return NULL; | |
848 | } | |
849 | ||
850 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
851 | } |
852 | ||
853 | /* Update the got entry reference counts for the section being removed. */ | |
854 | ||
b34976b6 | 855 | static bfd_boolean |
ce71b576 NC |
856 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
857 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
858 | { |
859 | Elf_Internal_Shdr *symtab_hdr; | |
860 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 861 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 862 | bfd *dynobj; |
90ace9e9 | 863 | |
7dda2462 TG |
864 | if (info->relocatable) |
865 | return TRUE; | |
866 | ||
90ace9e9 JT |
867 | dynobj = elf_hash_table (info)->dynobj; |
868 | if (dynobj == NULL) | |
b34976b6 | 869 | return TRUE; |
90ace9e9 | 870 | |
babfd660 KH |
871 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
872 | sym_hashes = elf_sym_hashes (abfd); | |
873 | ||
90ace9e9 JT |
874 | relend = relocs + sec->reloc_count; |
875 | for (rel = relocs; rel < relend; rel++) | |
876 | { | |
babfd660 | 877 | unsigned long r_symndx; |
3eb128b2 AM |
878 | struct elf_link_hash_entry *h = NULL; |
879 | ||
880 | r_symndx = ELF32_R_SYM (rel->r_info); | |
881 | if (r_symndx >= symtab_hdr->sh_info) | |
882 | { | |
883 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
884 | while (h->root.type == bfd_link_hash_indirect | |
885 | || h->root.type == bfd_link_hash_warning) | |
886 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
887 | } | |
babfd660 | 888 | |
90ace9e9 JT |
889 | switch (ELF32_R_TYPE (rel->r_info)) |
890 | { | |
891 | case R_VAX_GOT32: | |
3eb128b2 AM |
892 | if (h != NULL && h->got.refcount > 0) |
893 | --h->got.refcount; | |
90ace9e9 JT |
894 | break; |
895 | ||
896 | case R_VAX_PLT32: | |
897 | case R_VAX_PC8: | |
898 | case R_VAX_PC16: | |
899 | case R_VAX_PC32: | |
900 | case R_VAX_8: | |
901 | case R_VAX_16: | |
902 | case R_VAX_32: | |
3eb128b2 AM |
903 | if (h != NULL && h->plt.refcount > 0) |
904 | --h->plt.refcount; | |
90ace9e9 JT |
905 | break; |
906 | ||
907 | default: | |
908 | break; | |
909 | } | |
910 | } | |
911 | ||
b34976b6 | 912 | return TRUE; |
90ace9e9 JT |
913 | } |
914 | ||
915 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
916 | regular object. The current definition is in some section of the | |
917 | dynamic object, but we're not including those sections. We have to | |
918 | change the definition to something the rest of the link can | |
919 | understand. */ | |
920 | ||
b34976b6 | 921 | static bfd_boolean |
a0f0eb1e MR |
922 | elf_vax_adjust_dynamic_symbol (struct bfd_link_info *info, |
923 | struct elf_link_hash_entry *h) | |
90ace9e9 JT |
924 | { |
925 | bfd *dynobj; | |
926 | asection *s; | |
90ace9e9 JT |
927 | |
928 | dynobj = elf_hash_table (info)->dynobj; | |
929 | ||
930 | /* Make sure we know what is going on here. */ | |
931 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 932 | && (h->needs_plt |
f6e332e6 | 933 | || h->u.weakdef != NULL |
f5385ebf AM |
934 | || (h->def_dynamic |
935 | && h->ref_regular | |
936 | && !h->def_regular))); | |
90ace9e9 JT |
937 | |
938 | /* If this is a function, put it in the procedure linkage table. We | |
939 | will fill in the contents of the procedure linkage table later, | |
940 | when we know the address of the .got section. */ | |
941 | if (h->type == STT_FUNC | |
f5385ebf | 942 | || h->needs_plt) |
90ace9e9 | 943 | { |
a22a8039 MR |
944 | if (h->plt.refcount <= 0 |
945 | || SYMBOL_CALLS_LOCAL (info, h) | |
946 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
947 | && h->root.type == bfd_link_hash_undefweak)) | |
90ace9e9 JT |
948 | { |
949 | /* This case can occur if we saw a PLTxx reloc in an input | |
950 | file, but the symbol was never referred to by a dynamic | |
a22a8039 MR |
951 | object, or if all references were garbage collected. In |
952 | such a case, we don't actually need to build a procedure | |
953 | linkage table, and we can just do a PCxx reloc instead. */ | |
90ace9e9 | 954 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 955 | h->needs_plt = 0; |
b34976b6 | 956 | return TRUE; |
90ace9e9 JT |
957 | } |
958 | ||
3d4d4302 | 959 | s = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
960 | BFD_ASSERT (s != NULL); |
961 | ||
962 | /* If this is the first .plt entry, make room for the special | |
963 | first entry. */ | |
eea6121a | 964 | if (s->size == 0) |
90ace9e9 | 965 | { |
eea6121a | 966 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
967 | } |
968 | ||
969 | /* If this symbol is not defined in a regular file, and we are | |
970 | not generating a shared library, then set the symbol to this | |
971 | location in the .plt. This is required to make function | |
972 | pointers compare as equal between the normal executable and | |
973 | the shared library. */ | |
974 | if (!info->shared | |
f5385ebf | 975 | && !h->def_regular) |
90ace9e9 JT |
976 | { |
977 | h->root.u.def.section = s; | |
eea6121a | 978 | h->root.u.def.value = s->size; |
90ace9e9 JT |
979 | } |
980 | ||
eea6121a | 981 | h->plt.offset = s->size; |
90ace9e9 JT |
982 | |
983 | /* Make room for this entry. */ | |
eea6121a | 984 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
985 | |
986 | /* We also need to make an entry in the .got.plt section, which | |
987 | will be placed in the .got section by the linker script. */ | |
988 | ||
3d4d4302 | 989 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
90ace9e9 | 990 | BFD_ASSERT (s != NULL); |
eea6121a | 991 | s->size += 4; |
90ace9e9 JT |
992 | |
993 | /* We also need to make an entry in the .rela.plt section. */ | |
994 | ||
3d4d4302 | 995 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
90ace9e9 | 996 | BFD_ASSERT (s != NULL); |
eea6121a | 997 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 998 | |
b34976b6 | 999 | return TRUE; |
90ace9e9 JT |
1000 | } |
1001 | ||
1002 | /* Reinitialize the plt offset now that it is not used as a reference | |
1003 | count any more. */ | |
1004 | h->plt.offset = (bfd_vma) -1; | |
1005 | ||
1006 | /* If this is a weak symbol, and there is a real definition, the | |
1007 | processor independent code will have arranged for us to see the | |
1008 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1009 | if (h->u.weakdef != NULL) |
90ace9e9 | 1010 | { |
f6e332e6 AM |
1011 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1012 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1013 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1014 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1015 | return TRUE; |
90ace9e9 JT |
1016 | } |
1017 | ||
1018 | /* This is a reference to a symbol defined by a dynamic object which | |
1019 | is not a function. */ | |
1020 | ||
1021 | /* If we are creating a shared library, we must presume that the | |
1022 | only references to the symbol are via the global offset table. | |
1023 | For such cases we need not do anything here; the relocations will | |
1024 | be handled correctly by relocate_section. */ | |
1025 | if (info->shared) | |
b34976b6 | 1026 | return TRUE; |
90ace9e9 JT |
1027 | |
1028 | /* We must allocate the symbol in our .dynbss section, which will | |
1029 | become part of the .bss section of the executable. There will be | |
1030 | an entry for this symbol in the .dynsym section. The dynamic | |
1031 | object will contain position independent code, so all references | |
1032 | from the dynamic object to this symbol will go through the global | |
1033 | offset table. The dynamic linker will use the .dynsym entry to | |
1034 | determine the address it must put in the global offset table, so | |
1035 | both the dynamic object and the regular object will refer to the | |
1036 | same memory location for the variable. */ | |
1037 | ||
3d4d4302 | 1038 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
90ace9e9 JT |
1039 | BFD_ASSERT (s != NULL); |
1040 | ||
1041 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1042 | copy the initial value out of the dynamic object and into the | |
1043 | runtime process image. We need to remember the offset into the | |
1044 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 1045 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
90ace9e9 JT |
1046 | { |
1047 | asection *srel; | |
1048 | ||
3d4d4302 | 1049 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
90ace9e9 | 1050 | BFD_ASSERT (srel != NULL); |
eea6121a | 1051 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1052 | h->needs_copy = 1; |
90ace9e9 JT |
1053 | } |
1054 | ||
6cabe1ea | 1055 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
90ace9e9 JT |
1056 | } |
1057 | ||
fac3d241 MR |
1058 | /* This function is called via elf_link_hash_traverse. It resets GOT |
1059 | and PLT (.GOT) reference counts back to -1 so normal PC32 relocation | |
1060 | will be done. */ | |
1061 | ||
1062 | static bfd_boolean | |
1063 | elf_vax_discard_got_entries (struct elf_link_hash_entry *h, | |
1064 | void *infoptr ATTRIBUTE_UNUSED) | |
1065 | { | |
1066 | h->got.refcount = -1; | |
1067 | h->plt.refcount = -1; | |
1068 | ||
1069 | return TRUE; | |
1070 | } | |
1071 | ||
1072 | /* Discard unused dynamic data if this is a static link. */ | |
1073 | ||
1074 | static bfd_boolean | |
1075 | elf_vax_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
1076 | struct bfd_link_info *info) | |
1077 | { | |
1078 | bfd *dynobj; | |
1079 | asection *s; | |
1080 | ||
1081 | dynobj = elf_hash_table (info)->dynobj; | |
1082 | ||
1083 | if (dynobj && !elf_hash_table (info)->dynamic_sections_created) | |
1084 | { | |
1085 | /* We may have created entries in the .rela.got and .got sections. | |
1086 | However, if we are not creating the dynamic sections, we will | |
1087 | not actually use these entries. Reset the size of .rela.got | |
49d01bf6 | 1088 | and .got, which will cause them to get stripped from the output |
fac3d241 MR |
1089 | file below. */ |
1090 | s = bfd_get_linker_section (dynobj, ".rela.got"); | |
1091 | if (s != NULL) | |
1092 | s->size = 0; | |
1093 | s = bfd_get_linker_section (dynobj, ".got.plt"); | |
1094 | if (s != NULL) | |
1095 | s->size = 0; | |
1096 | s = bfd_get_linker_section (dynobj, ".got"); | |
1097 | if (s != NULL) | |
1098 | s->size = 0; | |
1099 | } | |
1100 | ||
1101 | /* If this is a static link, we need to discard all the got entries we've | |
1102 | recorded. */ | |
1103 | if (!dynobj || !elf_hash_table (info)->dynamic_sections_created) | |
1104 | elf_link_hash_traverse (elf_hash_table (info), | |
1105 | elf_vax_discard_got_entries, | |
1106 | info); | |
1107 | ||
1108 | return TRUE; | |
1109 | } | |
1110 | ||
90ace9e9 JT |
1111 | /* Set the sizes of the dynamic sections. */ |
1112 | ||
b34976b6 | 1113 | static bfd_boolean |
ce71b576 | 1114 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1115 | { |
1116 | bfd *dynobj; | |
1117 | asection *s; | |
b34976b6 AM |
1118 | bfd_boolean plt; |
1119 | bfd_boolean relocs; | |
1120 | bfd_boolean reltext; | |
90ace9e9 JT |
1121 | |
1122 | dynobj = elf_hash_table (info)->dynobj; | |
1123 | BFD_ASSERT (dynobj != NULL); | |
1124 | ||
1125 | if (elf_hash_table (info)->dynamic_sections_created) | |
1126 | { | |
1127 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1128 | if (info->executable) |
90ace9e9 | 1129 | { |
3d4d4302 | 1130 | s = bfd_get_linker_section (dynobj, ".interp"); |
90ace9e9 | 1131 | BFD_ASSERT (s != NULL); |
eea6121a | 1132 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1133 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1134 | } | |
1135 | } | |
90ace9e9 JT |
1136 | |
1137 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1138 | relative relocs against symbols defined in a regular object. We | |
1139 | allocated space for them in the check_relocs routine, but we will not | |
1140 | fill them in in the relocate_section routine. */ | |
1141 | if (info->shared && info->symbolic) | |
4dfe6ac6 | 1142 | elf_vax_link_hash_traverse (elf_hash_table (info), |
b29635ba | 1143 | elf_vax_discard_copies, |
ce71b576 | 1144 | NULL); |
b29635ba | 1145 | |
fac3d241 MR |
1146 | /* If this is a -Bsymbolic shared link, we need to discard all the got |
1147 | entries we've recorded. Otherwise, we need to instantiate (allocate | |
1148 | space for them). */ | |
b29635ba JT |
1149 | elf_link_hash_traverse (elf_hash_table (info), |
1150 | elf_vax_instantiate_got_entries, | |
2c3fc389 | 1151 | info); |
90ace9e9 JT |
1152 | |
1153 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1154 | determined the sizes of the various dynamic sections. Allocate | |
1155 | memory for them. */ | |
b34976b6 AM |
1156 | plt = FALSE; |
1157 | relocs = FALSE; | |
1158 | reltext = FALSE; | |
90ace9e9 JT |
1159 | for (s = dynobj->sections; s != NULL; s = s->next) |
1160 | { | |
1161 | const char *name; | |
90ace9e9 JT |
1162 | |
1163 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1164 | continue; | |
1165 | ||
1166 | /* It's OK to base decisions on the section name, because none | |
1167 | of the dynobj section names depend upon the input files. */ | |
1168 | name = bfd_get_section_name (dynobj, s); | |
1169 | ||
90ace9e9 JT |
1170 | if (strcmp (name, ".plt") == 0) |
1171 | { | |
c456f082 AM |
1172 | /* Remember whether there is a PLT. */ |
1173 | plt = s->size != 0; | |
90ace9e9 | 1174 | } |
0112cd26 | 1175 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1176 | { |
c456f082 | 1177 | if (s->size != 0) |
90ace9e9 JT |
1178 | { |
1179 | asection *target; | |
1180 | ||
1181 | /* Remember whether there are any reloc sections other | |
1182 | than .rela.plt. */ | |
1183 | if (strcmp (name, ".rela.plt") != 0) | |
1184 | { | |
1185 | const char *outname; | |
1186 | ||
b34976b6 | 1187 | relocs = TRUE; |
90ace9e9 JT |
1188 | |
1189 | /* If this relocation section applies to a read only | |
1190 | section, then we probably need a DT_TEXTREL | |
1191 | entry. .rela.plt is actually associated with | |
1192 | .got.plt, which is never readonly. */ | |
1193 | outname = bfd_get_section_name (output_bfd, | |
1194 | s->output_section); | |
1195 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1196 | if (target != NULL | |
1197 | && (target->flags & SEC_READONLY) != 0 | |
1198 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1199 | reltext = TRUE; |
90ace9e9 JT |
1200 | } |
1201 | ||
1202 | /* We use the reloc_count field as a counter if we need | |
1203 | to copy relocs into the output file. */ | |
1204 | s->reloc_count = 0; | |
1205 | } | |
1206 | } | |
0112cd26 | 1207 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1208 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1209 | { |
1210 | /* It's not one of our sections, so don't allocate space. */ | |
1211 | continue; | |
1212 | } | |
1213 | ||
c456f082 | 1214 | if (s->size == 0) |
90ace9e9 | 1215 | { |
c456f082 AM |
1216 | /* If we don't need this section, strip it from the |
1217 | output file. This is mostly to handle .rela.bss and | |
1218 | .rela.plt. We must create both sections in | |
1219 | create_dynamic_sections, because they must be created | |
1220 | before the linker maps input sections to output | |
1221 | sections. The linker does that before | |
1222 | adjust_dynamic_symbol is called, and it is that | |
1223 | function which decides whether anything needs to go | |
1224 | into these sections. */ | |
8423293d | 1225 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1226 | continue; |
1227 | } | |
1228 | ||
c456f082 AM |
1229 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1230 | continue; | |
1231 | ||
90ace9e9 | 1232 | /* Allocate memory for the section contents. */ |
eb9a5ecf | 1233 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 1234 | if (s->contents == NULL) |
b34976b6 | 1235 | return FALSE; |
90ace9e9 JT |
1236 | } |
1237 | ||
1238 | if (elf_hash_table (info)->dynamic_sections_created) | |
1239 | { | |
1240 | /* Add some entries to the .dynamic section. We fill in the | |
1241 | values later, in elf_vax_finish_dynamic_sections, but we | |
1242 | must add the entries now so that we get the correct size for | |
1243 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1244 | dynamic linker and used by the debugger. */ | |
1245 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1246 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1247 | |
1248 | if (!info->shared) | |
1249 | { | |
1250 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1251 | return FALSE; |
90ace9e9 JT |
1252 | } |
1253 | ||
1254 | if (plt) | |
1255 | { | |
1256 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1257 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1258 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1259 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1260 | return FALSE; |
90ace9e9 JT |
1261 | } |
1262 | ||
1263 | if (relocs) | |
1264 | { | |
1265 | if (!add_dynamic_entry (DT_RELA, 0) | |
1266 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1267 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1268 | return FALSE; |
90ace9e9 JT |
1269 | } |
1270 | ||
1271 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1272 | { | |
1273 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1274 | return FALSE; |
90ace9e9 JT |
1275 | } |
1276 | } | |
1277 | #undef add_dynamic_entry | |
1278 | ||
b34976b6 | 1279 | return TRUE; |
90ace9e9 JT |
1280 | } |
1281 | ||
1282 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1283 | creating a shared object with -Bsymbolic. It discards the space | |
1284 | allocated to copy PC relative relocs against symbols which are defined | |
1285 | in regular objects. We allocated space for them in the check_relocs | |
1286 | routine, but we won't fill them in in the relocate_section routine. */ | |
1287 | ||
b34976b6 | 1288 | static bfd_boolean |
ce71b576 | 1289 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
2c3fc389 | 1290 | void * ignore ATTRIBUTE_UNUSED) |
90ace9e9 JT |
1291 | { |
1292 | struct elf_vax_pcrel_relocs_copied *s; | |
1293 | ||
90ace9e9 | 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 | ||
fac3d241 MR |
1304 | /* This function is called via elf_link_hash_traverse. It looks for |
1305 | entries that have GOT or PLT (.GOT) references. If creating a shared | |
1306 | object with -Bsymbolic, or the symbol has been forced local, then it | |
1307 | resets the reference count back to -1 so normal PC32 relocation will | |
1308 | be done. Otherwise space in the .got and .rela.got will be reserved | |
1309 | for the symbol. */ | |
b29635ba | 1310 | |
b34976b6 | 1311 | static bfd_boolean |
2c3fc389 | 1312 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, void * 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; | |
fac3d241 | 1324 | BFD_ASSERT (dynobj != NULL); |
b29635ba | 1325 | |
3d4d4302 AM |
1326 | sgot = bfd_get_linker_section (dynobj, ".got"); |
1327 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
b29635ba | 1328 | |
125b5bac | 1329 | if (SYMBOL_REFERENCES_LOCAL (info, h)) |
b29635ba | 1330 | { |
8be65dd3 MR |
1331 | h->got.refcount = -1; |
1332 | h->plt.refcount = -1; | |
b29635ba JT |
1333 | } |
1334 | else if (h->got.refcount > 0) | |
1335 | { | |
1336 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1337 | if (h->dynindx == -1) | |
1338 | { | |
c152c796 | 1339 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1340 | return FALSE; |
b29635ba JT |
1341 | } |
1342 | ||
1343 | /* Allocate space in the .got and .rela.got sections. */ | |
125b5bac MR |
1344 | sgot->size += 4; |
1345 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1346 | } |
1347 | ||
b34976b6 | 1348 | return TRUE; |
b29635ba JT |
1349 | } |
1350 | ||
90ace9e9 JT |
1351 | /* Relocate an VAX ELF section. */ |
1352 | ||
b34976b6 | 1353 | static bfd_boolean |
ce71b576 NC |
1354 | elf_vax_relocate_section (bfd *output_bfd, |
1355 | struct bfd_link_info *info, | |
1356 | bfd *input_bfd, | |
1357 | asection *input_section, | |
1358 | bfd_byte *contents, | |
1359 | Elf_Internal_Rela *relocs, | |
1360 | Elf_Internal_Sym *local_syms, | |
1361 | asection **local_sections) | |
90ace9e9 JT |
1362 | { |
1363 | bfd *dynobj; | |
1364 | Elf_Internal_Shdr *symtab_hdr; | |
1365 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
1366 | bfd_vma plt_index; |
1367 | bfd_vma got_offset; | |
1368 | asection *sgot; | |
1369 | asection *splt; | |
1370 | asection *sgotplt; | |
1371 | asection *sreloc; | |
1372 | Elf_Internal_Rela *rel; | |
1373 | Elf_Internal_Rela *relend; | |
1374 | ||
1375 | dynobj = elf_hash_table (info)->dynobj; | |
1376 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1377 | sym_hashes = elf_sym_hashes (input_bfd); | |
90ace9e9 JT |
1378 | |
1379 | sgot = NULL; | |
1380 | splt = NULL; | |
1381 | sgotplt = NULL; | |
1382 | sreloc = NULL; | |
1383 | ||
1384 | rel = relocs; | |
1385 | relend = relocs + input_section->reloc_count; | |
1386 | for (; rel < relend; rel++) | |
1387 | { | |
1388 | int r_type; | |
1389 | reloc_howto_type *howto; | |
1390 | unsigned long r_symndx; | |
1391 | struct elf_link_hash_entry *h; | |
1392 | Elf_Internal_Sym *sym; | |
1393 | asection *sec; | |
1394 | bfd_vma relocation; | |
1395 | bfd_reloc_status_type r; | |
1396 | ||
1397 | r_type = ELF32_R_TYPE (rel->r_info); | |
1398 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1399 | { | |
1400 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1401 | return FALSE; |
90ace9e9 JT |
1402 | } |
1403 | howto = howto_table + r_type; | |
1404 | ||
f0fe0e16 | 1405 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1406 | h = NULL; |
1407 | sym = NULL; | |
1408 | sec = NULL; | |
1409 | if (r_symndx < symtab_hdr->sh_info) | |
1410 | { | |
1411 | sym = local_syms + r_symndx; | |
1412 | sec = local_sections[r_symndx]; | |
8517fae7 | 1413 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1414 | } |
1415 | else | |
1416 | { | |
560e09e9 | 1417 | bfd_boolean unresolved_reloc; |
62d887d4 | 1418 | bfd_boolean warned, ignored; |
560e09e9 | 1419 | |
b2a8e766 AM |
1420 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1421 | r_symndx, symtab_hdr, sym_hashes, | |
1422 | h, sec, relocation, | |
62d887d4 | 1423 | unresolved_reloc, warned, ignored); |
ce71b576 | 1424 | |
560e09e9 | 1425 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1426 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1427 | && ((r_type == R_VAX_PLT32 |
90ace9e9 | 1428 | && h->plt.offset != (bfd_vma) -1 |
fe723c87 | 1429 | && !h->forced_local |
90ace9e9 JT |
1430 | && elf_hash_table (info)->dynamic_sections_created) |
1431 | || (r_type == R_VAX_GOT32 | |
fe723c87 MT |
1432 | && h->got.offset != (bfd_vma) -1 |
1433 | && !h->forced_local | |
90ace9e9 JT |
1434 | && elf_hash_table (info)->dynamic_sections_created |
1435 | && (! info->shared | |
1436 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1437 | || !h->def_regular)) |
90ace9e9 JT |
1438 | || (info->shared |
1439 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1440 | || !h->def_regular) |
90ace9e9 JT |
1441 | && ((input_section->flags & SEC_ALLOC) != 0 |
1442 | /* DWARF will emit R_VAX_32 relocations in its | |
1443 | sections against symbols defined externally | |
1444 | in shared libraries. We can't do anything | |
1445 | with them here. */ | |
1446 | ||
1447 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1448 | && h->def_dynamic)) |
90ace9e9 JT |
1449 | && (r_type == R_VAX_8 |
1450 | || r_type == R_VAX_16 | |
fe723c87 | 1451 | || r_type == R_VAX_32)))) |
560e09e9 NC |
1452 | /* In these cases, we don't need the relocation |
1453 | value. We check specially because in some | |
1454 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1455 | relocation = 0; |
90ace9e9 JT |
1456 | } |
1457 | ||
dbaa2011 | 1458 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1459 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1460 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
1461 | |
1462 | if (info->relocatable) | |
1463 | continue; | |
1464 | ||
90ace9e9 JT |
1465 | switch (r_type) |
1466 | { | |
1467 | case R_VAX_GOT32: | |
1468 | /* Relocation is to the address of the entry for this symbol | |
1469 | in the global offset table. */ | |
125b5bac MR |
1470 | |
1471 | /* Resolve a GOTxx reloc against a local symbol directly, | |
1472 | without using the global offset table. */ | |
7b6021f1 | 1473 | if (h == NULL |
125b5bac | 1474 | || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1475 | break; |
1476 | ||
90ace9e9 JT |
1477 | { |
1478 | bfd_vma off; | |
1479 | ||
90ace9e9 JT |
1480 | if (sgot == NULL) |
1481 | { | |
3d4d4302 | 1482 | sgot = bfd_get_linker_section (dynobj, ".got"); |
90ace9e9 JT |
1483 | BFD_ASSERT (sgot != NULL); |
1484 | } | |
1485 | ||
90ace9e9 | 1486 | off = h->got.offset; |
eea6121a | 1487 | BFD_ASSERT (off < sgot->size); |
90ace9e9 | 1488 | |
125b5bac | 1489 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); |
90ace9e9 JT |
1490 | |
1491 | relocation = sgot->output_offset + off; | |
b29635ba | 1492 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1493 | rel->r_addend = 0; |
1494 | ||
b29635ba JT |
1495 | /* Change the reference to be indirect. */ |
1496 | contents[rel->r_offset - 1] |= 0x10; | |
1497 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1498 | } |
1499 | break; | |
1500 | ||
04981bc1 MR |
1501 | case R_VAX_PC32: |
1502 | /* If we are creating an executable and the function this | |
1503 | reloc refers to is in a shared lib, then we made a PLT | |
1504 | entry for this symbol and need to handle the reloc like | |
1505 | a PLT reloc. */ | |
1506 | if (info->shared) | |
1507 | goto r_vax_pc32_shared; | |
1508 | /* Fall through. */ | |
90ace9e9 JT |
1509 | case R_VAX_PLT32: |
1510 | /* Relocation is to the entry for this symbol in the | |
1511 | procedure linkage table. */ | |
1512 | ||
1513 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1514 | without using the procedure linkage table. */ | |
7b6021f1 | 1515 | if (h == NULL |
125b5bac | 1516 | || h->plt.offset == (bfd_vma) -1) |
90ace9e9 JT |
1517 | break; |
1518 | ||
90ace9e9 JT |
1519 | if (splt == NULL) |
1520 | { | |
3d4d4302 | 1521 | splt = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
1522 | BFD_ASSERT (splt != NULL); |
1523 | } | |
1524 | ||
1525 | if (sgotplt == NULL) | |
1526 | { | |
3d4d4302 | 1527 | sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); |
d76b263e | 1528 | BFD_ASSERT (sgotplt != NULL); |
90ace9e9 JT |
1529 | } |
1530 | ||
1531 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1532 | ||
1533 | /* Get the offset into the .got table of the entry that | |
1534 | corresponds to this function. Each .got entry is 4 bytes. | |
1535 | The first two are reserved. */ | |
1536 | got_offset = (plt_index + 3) * 4; | |
1537 | ||
9e86195c | 1538 | /* We want the relocation to point into the .got.plt instead |
cedb70c5 | 1539 | of the plt itself. */ |
90ace9e9 JT |
1540 | relocation = (sgotplt->output_section->vma |
1541 | + sgotplt->output_offset | |
1542 | + got_offset); | |
1543 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1544 | if (rel->r_addend == 2) | |
1545 | { | |
1546 | h->plt.offset |= 1; | |
1547 | } | |
1548 | else if (rel->r_addend != 0) | |
1549 | (*_bfd_error_handler) | |
1550 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1551 | bfd_get_filename (input_bfd), rel->r_addend, | |
1552 | h->root.root.string, | |
1553 | bfd_get_section_name (input_bfd, input_section)); | |
1554 | rel->r_addend = 0; | |
1555 | ||
1556 | break; | |
1557 | ||
1558 | case R_VAX_PC8: | |
1559 | case R_VAX_PC16: | |
04981bc1 | 1560 | r_vax_pc32_shared: |
7b6021f1 MR |
1561 | if (h == NULL |
1562 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1563 | || h->forced_local) | |
90ace9e9 JT |
1564 | break; |
1565 | /* Fall through. */ | |
1566 | case R_VAX_8: | |
1567 | case R_VAX_16: | |
1568 | case R_VAX_32: | |
1569 | if (info->shared | |
cf35638d | 1570 | && r_symndx != STN_UNDEF |
90ace9e9 JT |
1571 | && (input_section->flags & SEC_ALLOC) != 0 |
1572 | && ((r_type != R_VAX_PC8 | |
1573 | && r_type != R_VAX_PC16 | |
1574 | && r_type != R_VAX_PC32) | |
da6bcfca MT |
1575 | || ((input_section->flags & SEC_CODE) |
1576 | && (!info->symbolic | |
1577 | || (!h->def_regular && h->type != STT_SECTION))))) | |
90ace9e9 JT |
1578 | { |
1579 | Elf_Internal_Rela outrel; | |
947216bf | 1580 | bfd_byte *loc; |
b34976b6 | 1581 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1582 | |
1583 | /* When generating a shared object, these relocations | |
1584 | are copied into the output file to be resolved at run | |
1585 | time. */ | |
90ace9e9 JT |
1586 | if (sreloc == NULL) |
1587 | { | |
83bac4b0 NC |
1588 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1589 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1590 | if (sreloc == NULL) | |
b34976b6 | 1591 | return FALSE; |
90ace9e9 JT |
1592 | } |
1593 | ||
b34976b6 AM |
1594 | skip = FALSE; |
1595 | relocate = FALSE; | |
90ace9e9 JT |
1596 | |
1597 | outrel.r_offset = | |
1598 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1599 | rel->r_offset); | |
1600 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1601 | skip = TRUE; |
90ace9e9 | 1602 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1603 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1604 | outrel.r_offset += (input_section->output_section->vma |
1605 | + input_section->output_offset); | |
1606 | ||
1607 | if (skip) | |
1608 | memset (&outrel, 0, sizeof outrel); | |
1609 | /* h->dynindx may be -1 if the symbol was marked to | |
1610 | become local. */ | |
1611 | else if (h != NULL | |
1612 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1613 | || !h->def_regular)) |
90ace9e9 JT |
1614 | { |
1615 | BFD_ASSERT (h->dynindx != -1); | |
1616 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1617 | outrel.r_addend = relocation + rel->r_addend; | |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | if (r_type == R_VAX_32) | |
1622 | { | |
b34976b6 | 1623 | relocate = TRUE; |
90ace9e9 JT |
1624 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1625 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1626 | &contents[rel->r_offset]) == 0); | |
1627 | outrel.r_addend = relocation + rel->r_addend; | |
1628 | } | |
1629 | else | |
1630 | { | |
1631 | long indx; | |
1632 | ||
8517fae7 | 1633 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1634 | indx = 0; |
1635 | else if (sec == NULL || sec->owner == NULL) | |
1636 | { | |
1637 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1638 | return FALSE; |
90ace9e9 JT |
1639 | } |
1640 | else | |
1641 | { | |
1642 | asection *osec; | |
1643 | ||
74541ad4 AM |
1644 | /* We are turning this relocation into one |
1645 | against a section symbol. It would be | |
1646 | proper to subtract the symbol's value, | |
1647 | osec->vma, from the emitted reloc addend, | |
1648 | but ld.so expects buggy relocs. */ | |
90ace9e9 JT |
1649 | osec = sec->output_section; |
1650 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1651 | if (indx == 0) |
1652 | { | |
1653 | struct elf_link_hash_table *htab; | |
1654 | htab = elf_hash_table (info); | |
1655 | osec = htab->text_index_section; | |
1656 | indx = elf_section_data (osec)->dynindx; | |
1657 | } | |
1658 | BFD_ASSERT (indx != 0); | |
90ace9e9 JT |
1659 | } |
1660 | ||
1661 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1662 | outrel.r_addend = relocation + rel->r_addend; | |
1663 | } | |
1664 | } | |
1665 | ||
ddd74d3c | 1666 | if ((input_section->flags & SEC_CODE) != 0 |
751c1fe7 | 1667 | || (ELF32_R_TYPE (outrel.r_info) != R_VAX_32 |
ddd74d3c MR |
1668 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_RELATIVE |
1669 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_COPY | |
1670 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_JMP_SLOT | |
1671 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_GLOB_DAT)) | |
90ace9e9 JT |
1672 | { |
1673 | if (h != NULL) | |
1674 | (*_bfd_error_handler) | |
1675 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1676 | bfd_get_filename (input_bfd), howto->name, | |
1677 | h->root.root.string, | |
1678 | bfd_get_section_name (input_bfd, input_section)); | |
1679 | else | |
1680 | (*_bfd_error_handler) | |
1681 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1682 | bfd_get_filename (input_bfd), howto->name, | |
1683 | outrel.r_addend, | |
1684 | bfd_get_section_name (input_bfd, input_section)); | |
1685 | } | |
947216bf AM |
1686 | loc = sreloc->contents; |
1687 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1688 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1689 | |
1690 | /* This reloc will be computed at runtime, so there's no | |
1691 | need to do anything now, except for R_VAX_32 | |
1692 | relocations that have been turned into | |
1693 | R_VAX_RELATIVE. */ | |
1694 | if (!relocate) | |
1695 | continue; | |
1696 | } | |
1697 | ||
1698 | break; | |
1699 | ||
1700 | case R_VAX_GNU_VTINHERIT: | |
1701 | case R_VAX_GNU_VTENTRY: | |
1702 | /* These are no-ops in the end. */ | |
1703 | continue; | |
1704 | ||
1705 | default: | |
1706 | break; | |
1707 | } | |
1708 | ||
b34976b6 | 1709 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1710 | So subtract the difference from the relocation amount since we can't |
1711 | add it to the offset. */ | |
90ace9e9 | 1712 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1713 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1714 | |
1715 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1716 | contents, rel->r_offset, | |
1717 | relocation, rel->r_addend); | |
1718 | ||
1719 | if (r != bfd_reloc_ok) | |
1720 | { | |
1721 | switch (r) | |
1722 | { | |
1723 | default: | |
1724 | case bfd_reloc_outofrange: | |
1725 | abort (); | |
1726 | case bfd_reloc_overflow: | |
1727 | { | |
1728 | const char *name; | |
1729 | ||
1730 | if (h != NULL) | |
dfeffb9f | 1731 | name = NULL; |
90ace9e9 JT |
1732 | else |
1733 | { | |
1734 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1735 | symtab_hdr->sh_link, | |
1736 | sym->st_name); | |
1737 | if (name == NULL) | |
b34976b6 | 1738 | return FALSE; |
90ace9e9 JT |
1739 | if (*name == '\0') |
1740 | name = bfd_section_name (input_bfd, sec); | |
1741 | } | |
1742 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1743 | (info, (h ? &h->root : NULL), name, howto->name, |
1744 | (bfd_vma) 0, input_bfd, input_section, | |
1745 | rel->r_offset))) | |
b34976b6 | 1746 | return FALSE; |
90ace9e9 JT |
1747 | } |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | } | |
1752 | ||
b34976b6 | 1753 | return TRUE; |
90ace9e9 JT |
1754 | } |
1755 | ||
1756 | /* Finish up dynamic symbol handling. We set the contents of various | |
1757 | dynamic sections here. */ | |
1758 | ||
b34976b6 | 1759 | static bfd_boolean |
ce71b576 NC |
1760 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1761 | struct elf_link_hash_entry *h, | |
1762 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1763 | { |
1764 | bfd *dynobj; | |
1765 | ||
1766 | dynobj = elf_hash_table (info)->dynobj; | |
1767 | ||
1768 | if (h->plt.offset != (bfd_vma) -1) | |
1769 | { | |
1770 | asection *splt; | |
1771 | asection *sgot; | |
1772 | asection *srela; | |
1773 | bfd_vma plt_index; | |
1774 | bfd_vma got_offset; | |
1775 | bfd_vma addend; | |
1776 | Elf_Internal_Rela rela; | |
947216bf | 1777 | bfd_byte *loc; |
90ace9e9 JT |
1778 | |
1779 | /* This symbol has an entry in the procedure linkage table. Set | |
1780 | it up. */ | |
90ace9e9 JT |
1781 | BFD_ASSERT (h->dynindx != -1); |
1782 | ||
3d4d4302 AM |
1783 | splt = bfd_get_linker_section (dynobj, ".plt"); |
1784 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); | |
1785 | srela = bfd_get_linker_section (dynobj, ".rela.plt"); | |
90ace9e9 JT |
1786 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
1787 | ||
1788 | addend = 2 * (h->plt.offset & 1); | |
1789 | h->plt.offset &= ~1; | |
1790 | ||
1791 | /* Get the index in the procedure linkage table which | |
1792 | corresponds to this symbol. This is the index of this symbol | |
1793 | in all the symbols for which we are making plt entries. The | |
1794 | first entry in the procedure linkage table is reserved. */ | |
1795 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1796 | ||
1797 | /* Get the offset into the .got table of the entry that | |
1798 | corresponds to this function. Each .got entry is 4 bytes. | |
1799 | The first two are reserved. */ | |
1800 | got_offset = (plt_index + 3) * 4; | |
1801 | ||
1802 | /* Fill in the entry in the procedure linkage table. */ | |
1803 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1804 | PLT_ENTRY_SIZE); | |
1805 | ||
1806 | /* The offset is relative to the first extension word. */ | |
1807 | bfd_put_32 (output_bfd, | |
1808 | -(h->plt.offset + 8), | |
1809 | splt->contents + h->plt.offset + 4); | |
1810 | ||
1811 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1812 | splt->contents + h->plt.offset + 8); | |
1813 | ||
1814 | /* Fill in the entry in the global offset table. */ | |
1815 | bfd_put_32 (output_bfd, | |
1816 | (splt->output_section->vma | |
1817 | + splt->output_offset | |
1818 | + h->plt.offset) + addend, | |
1819 | sgot->contents + got_offset); | |
1820 | ||
1821 | /* Fill in the entry in the .rela.plt section. */ | |
1822 | rela.r_offset = (sgot->output_section->vma | |
1823 | + sgot->output_offset | |
1824 | + got_offset); | |
1825 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1826 | rela.r_addend = addend; | |
947216bf AM |
1827 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1828 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1829 | |
f5385ebf | 1830 | if (!h->def_regular) |
90ace9e9 JT |
1831 | { |
1832 | /* Mark the symbol as undefined, rather than as defined in | |
1833 | the .plt section. Leave the value alone. */ | |
1834 | sym->st_shndx = SHN_UNDEF; | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | if (h->got.offset != (bfd_vma) -1) | |
1839 | { | |
1840 | asection *sgot; | |
1841 | asection *srela; | |
1842 | Elf_Internal_Rela rela; | |
947216bf | 1843 | bfd_byte *loc; |
90ace9e9 JT |
1844 | |
1845 | /* This symbol has an entry in the global offset table. Set it | |
1846 | up. */ | |
3d4d4302 AM |
1847 | sgot = bfd_get_linker_section (dynobj, ".got"); |
1848 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
90ace9e9 JT |
1849 | BFD_ASSERT (sgot != NULL && srela != NULL); |
1850 | ||
1851 | rela.r_offset = (sgot->output_section->vma | |
1852 | + sgot->output_offset | |
125b5bac MR |
1853 | + h->got.offset); |
1854 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
90ace9e9 | 1855 | rela.r_addend = bfd_get_signed_32 (output_bfd, |
125b5bac | 1856 | sgot->contents + h->got.offset); |
90ace9e9 | 1857 | |
947216bf AM |
1858 | loc = srela->contents; |
1859 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1860 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1861 | } |
1862 | ||
f5385ebf | 1863 | if (h->needs_copy) |
90ace9e9 JT |
1864 | { |
1865 | asection *s; | |
1866 | Elf_Internal_Rela rela; | |
947216bf | 1867 | bfd_byte *loc; |
90ace9e9 JT |
1868 | |
1869 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1870 | BFD_ASSERT (h->dynindx != -1 |
1871 | && (h->root.type == bfd_link_hash_defined | |
1872 | || h->root.type == bfd_link_hash_defweak)); | |
1873 | ||
3d4d4302 | 1874 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
90ace9e9 JT |
1875 | BFD_ASSERT (s != NULL); |
1876 | ||
1877 | rela.r_offset = (h->root.u.def.value | |
1878 | + h->root.u.def.section->output_section->vma | |
1879 | + h->root.u.def.section->output_offset); | |
1880 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1881 | rela.r_addend = 0; | |
947216bf AM |
1882 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1883 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1884 | } |
1885 | ||
1886 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 1887 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 1888 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1889 | sym->st_shndx = SHN_ABS; |
1890 | ||
b34976b6 | 1891 | return TRUE; |
90ace9e9 JT |
1892 | } |
1893 | ||
1894 | /* Finish up the dynamic sections. */ | |
1895 | ||
b34976b6 | 1896 | static bfd_boolean |
ce71b576 | 1897 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1898 | { |
1899 | bfd *dynobj; | |
1900 | asection *sgot; | |
1901 | asection *sdyn; | |
1902 | ||
1903 | dynobj = elf_hash_table (info)->dynobj; | |
1904 | ||
3d4d4302 | 1905 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); |
90ace9e9 | 1906 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 1907 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
90ace9e9 JT |
1908 | |
1909 | if (elf_hash_table (info)->dynamic_sections_created) | |
1910 | { | |
1911 | asection *splt; | |
1912 | Elf32_External_Dyn *dyncon, *dynconend; | |
1913 | ||
3d4d4302 | 1914 | splt = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
1915 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
1916 | ||
1917 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1918 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1919 | for (; dyncon < dynconend; dyncon++) |
1920 | { | |
1921 | Elf_Internal_Dyn dyn; | |
1922 | const char *name; | |
1923 | asection *s; | |
1924 | ||
1925 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1926 | ||
1927 | switch (dyn.d_tag) | |
1928 | { | |
1929 | default: | |
1930 | break; | |
1931 | ||
1932 | case DT_PLTGOT: | |
1933 | name = ".got"; | |
1934 | goto get_vma; | |
1935 | case DT_JMPREL: | |
1936 | name = ".rela.plt"; | |
1937 | get_vma: | |
1938 | s = bfd_get_section_by_name (output_bfd, name); | |
1939 | BFD_ASSERT (s != NULL); | |
1940 | dyn.d_un.d_ptr = s->vma; | |
1941 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1942 | break; | |
1943 | ||
1944 | case DT_PLTRELSZ: | |
1945 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1946 | BFD_ASSERT (s != NULL); | |
eea6121a | 1947 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
1948 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1949 | break; | |
1950 | ||
1951 | case DT_RELASZ: | |
1952 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1953 | not be included in the overall relocs (DT_RELA). | |
1954 | Therefore, we override the DT_RELASZ entry here to | |
1955 | make it not include the JMPREL relocs. Since the | |
1956 | linker script arranges for .rela.plt to follow all | |
1957 | other relocation sections, we don't have to worry | |
1958 | about changing the DT_RELA entry. */ | |
1959 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1960 | if (s != NULL) | |
eea6121a | 1961 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
1962 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1963 | break; | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 1968 | if (splt->size > 0) |
90ace9e9 JT |
1969 | { |
1970 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
1971 | bfd_put_32 (output_bfd, | |
1972 | (sgot->output_section->vma | |
1973 | + sgot->output_offset + 4 | |
1974 | - (splt->output_section->vma + 6)), | |
1975 | splt->contents + 2); | |
1976 | bfd_put_32 (output_bfd, | |
1977 | (sgot->output_section->vma | |
1978 | + sgot->output_offset + 8 | |
1979 | - (splt->output_section->vma + 12)), | |
1980 | splt->contents + 8); | |
cedb70c5 | 1981 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
1982 | = PLT_ENTRY_SIZE; |
1983 | } | |
1984 | } | |
1985 | ||
1986 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 1987 | if (sgot->size > 0) |
90ace9e9 JT |
1988 | { |
1989 | if (sdyn == NULL) | |
1990 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1991 | else | |
1992 | bfd_put_32 (output_bfd, | |
1993 | sdyn->output_section->vma + sdyn->output_offset, | |
1994 | sgot->contents); | |
1995 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
1996 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
1997 | } | |
1998 | ||
f6518c48 MR |
1999 | if (elf_section_data (sgot->output_section) != NULL) |
2000 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
90ace9e9 | 2001 | |
b34976b6 | 2002 | return TRUE; |
90ace9e9 JT |
2003 | } |
2004 | ||
9b90d8fd | 2005 | static enum elf_reloc_type_class |
7e612e98 AM |
2006 | elf_vax_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2007 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2008 | const Elf_Internal_Rela *rela) | |
9b90d8fd MR |
2009 | { |
2010 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2011 | { | |
2012 | case R_VAX_RELATIVE: | |
2013 | return reloc_class_relative; | |
2014 | case R_VAX_JMP_SLOT: | |
2015 | return reloc_class_plt; | |
2016 | case R_VAX_COPY: | |
2017 | return reloc_class_copy; | |
2018 | default: | |
2019 | return reloc_class_normal; | |
2020 | } | |
2021 | } | |
2022 | ||
6db7e006 MR |
2023 | static bfd_vma |
2024 | elf_vax_plt_sym_val (bfd_vma i, const asection *plt, | |
2025 | const arelent *rel ATTRIBUTE_UNUSED) | |
2026 | { | |
2027 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
2028 | } | |
2029 | ||
6d00b590 | 2030 | #define TARGET_LITTLE_SYM vax_elf32_vec |
90ace9e9 JT |
2031 | #define TARGET_LITTLE_NAME "elf32-vax" |
2032 | #define ELF_MACHINE_CODE EM_VAX | |
2033 | #define ELF_MAXPAGESIZE 0x1000 | |
2034 | ||
2035 | #define elf_backend_create_dynamic_sections \ | |
2036 | _bfd_elf_create_dynamic_sections | |
2037 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2038 | elf_vax_link_hash_table_create | |
c152c796 | 2039 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2040 | |
2041 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2042 | #define elf_backend_adjust_dynamic_symbol \ | |
2043 | elf_vax_adjust_dynamic_symbol | |
fac3d241 MR |
2044 | #define elf_backend_always_size_sections \ |
2045 | elf_vax_always_size_sections | |
90ace9e9 JT |
2046 | #define elf_backend_size_dynamic_sections \ |
2047 | elf_vax_size_dynamic_sections | |
74541ad4 | 2048 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
90ace9e9 JT |
2049 | #define elf_backend_relocate_section elf_vax_relocate_section |
2050 | #define elf_backend_finish_dynamic_symbol \ | |
2051 | elf_vax_finish_dynamic_symbol | |
2052 | #define elf_backend_finish_dynamic_sections \ | |
2053 | elf_vax_finish_dynamic_sections | |
9b90d8fd | 2054 | #define elf_backend_reloc_type_class elf_vax_reloc_type_class |
90ace9e9 JT |
2055 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook |
2056 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
6db7e006 | 2057 | #define elf_backend_plt_sym_val elf_vax_plt_sym_val |
90ace9e9 JT |
2058 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2059 | elf32_vax_merge_private_bfd_data | |
2060 | #define bfd_elf32_bfd_set_private_flags \ | |
2061 | elf32_vax_set_private_flags | |
2062 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2063 | elf32_vax_print_private_bfd_data | |
2064 | ||
2065 | #define elf_backend_can_gc_sections 1 | |
2066 | #define elf_backend_want_got_plt 1 | |
2067 | #define elf_backend_plt_readonly 1 | |
2068 | #define elf_backend_want_plt_sym 0 | |
2069 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2070 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2071 | |
2072 | #include "elf32-target.h" |