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, |
157090f7 | 3 | 2004, 2005, 2006, 2007 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 | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 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 | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
90ace9e9 | 22 | |
90ace9e9 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
90ace9e9 JT |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf/vax.h" | |
29 | ||
ce71b576 NC |
30 | static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type); |
31 | static void rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *); | |
32 | static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *, | |
33 | struct bfd_hash_table *, | |
34 | const char *); | |
35 | static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *); | |
36 | static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *, | |
37 | asection *, const Elf_Internal_Rela *); | |
ce71b576 NC |
38 | static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *, |
39 | struct elf_link_hash_entry *); | |
40 | static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *); | |
41 | static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *, | |
42 | bfd *, asection *, bfd_byte *, | |
43 | Elf_Internal_Rela *, | |
44 | Elf_Internal_Sym *, asection **); | |
45 | static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *, | |
46 | struct elf_link_hash_entry *, | |
47 | Elf_Internal_Sym *); | |
48 | static bfd_boolean elf_vax_finish_dynamic_sections (bfd *, | |
49 | struct bfd_link_info *); | |
50 | ||
51 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
52 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
53 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, PTR); | |
90ace9e9 JT |
54 | |
55 | static reloc_howto_type howto_table[] = { | |
56 | HOWTO (R_VAX_NONE, /* type */ | |
57 | 0, /* rightshift */ | |
58 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
59 | 0, /* bitsize */ | |
b34976b6 | 60 | FALSE, /* pc_relative */ |
90ace9e9 JT |
61 | 0, /* bitpos */ |
62 | complain_overflow_dont, /* complain_on_overflow */ | |
63 | bfd_elf_generic_reloc, /* special_function */ | |
64 | "R_VAX_NONE", /* name */ | |
b34976b6 | 65 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
66 | 0, /* src_mask */ |
67 | 0x00000000, /* dst_mask */ | |
b34976b6 | 68 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
69 | |
70 | HOWTO (R_VAX_32, /* type */ | |
71 | 0, /* rightshift */ | |
72 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
73 | 32, /* bitsize */ | |
b34976b6 | 74 | FALSE, /* pc_relative */ |
90ace9e9 JT |
75 | 0, /* bitpos */ |
76 | complain_overflow_bitfield, /* complain_on_overflow */ | |
77 | bfd_elf_generic_reloc, /* special_function */ | |
78 | "R_VAX_32", /* name */ | |
b34976b6 | 79 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
80 | 0, /* src_mask */ |
81 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 82 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
83 | |
84 | HOWTO (R_VAX_16, /* type */ | |
85 | 0, /* rightshift */ | |
86 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
87 | 16, /* bitsize */ | |
b34976b6 | 88 | FALSE, /* pc_relative */ |
90ace9e9 JT |
89 | 0, /* bitpos */ |
90 | complain_overflow_bitfield, /* complain_on_overflow */ | |
91 | bfd_elf_generic_reloc, /* special_function */ | |
92 | "R_VAX_16", /* name */ | |
b34976b6 | 93 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
94 | 0, /* src_mask */ |
95 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 96 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
97 | |
98 | HOWTO (R_VAX_8, /* type */ | |
99 | 0, /* rightshift */ | |
100 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
101 | 8, /* bitsize */ | |
b34976b6 | 102 | FALSE, /* pc_relative */ |
90ace9e9 JT |
103 | 0, /* bitpos */ |
104 | complain_overflow_bitfield, /* complain_on_overflow */ | |
105 | bfd_elf_generic_reloc, /* special_function */ | |
106 | "R_VAX_8", /* name */ | |
b34976b6 | 107 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
108 | 0, /* src_mask */ |
109 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 110 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
111 | |
112 | HOWTO (R_VAX_PC32, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 32, /* bitsize */ | |
b34976b6 | 116 | TRUE, /* pc_relative */ |
90ace9e9 JT |
117 | 0, /* bitpos */ |
118 | complain_overflow_bitfield, /* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_VAX_PC32", /* name */ | |
b34976b6 | 121 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
122 | 0, /* src_mask */ |
123 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 124 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
125 | |
126 | HOWTO (R_VAX_PC16, /* type */ | |
127 | 0, /* rightshift */ | |
128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
129 | 16, /* bitsize */ | |
b34976b6 | 130 | TRUE, /* pc_relative */ |
90ace9e9 JT |
131 | 0, /* bitpos */ |
132 | complain_overflow_signed, /* complain_on_overflow */ | |
133 | bfd_elf_generic_reloc, /* special_function */ | |
134 | "R_VAX_PC16", /* name */ | |
b34976b6 | 135 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
136 | 0, /* src_mask */ |
137 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 138 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
139 | |
140 | HOWTO (R_VAX_PC8, /* type */ | |
141 | 0, /* rightshift */ | |
142 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
143 | 8, /* bitsize */ | |
b34976b6 | 144 | TRUE, /* pc_relative */ |
90ace9e9 JT |
145 | 0, /* bitpos */ |
146 | complain_overflow_signed, /* complain_on_overflow */ | |
147 | bfd_elf_generic_reloc, /* special_function */ | |
148 | "R_VAX_PC8", /* name */ | |
b34976b6 | 149 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
150 | 0, /* src_mask */ |
151 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 152 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
153 | |
154 | HOWTO (R_VAX_GOT32, /* type */ | |
155 | 0, /* rightshift */ | |
156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 32, /* bitsize */ | |
b34976b6 | 158 | TRUE, /* pc_relative */ |
90ace9e9 JT |
159 | 0, /* bitpos */ |
160 | complain_overflow_bitfield, /* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 163 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
164 | 0, /* src_mask */ |
165 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 166 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
167 | |
168 | EMPTY_HOWTO (-1), | |
169 | EMPTY_HOWTO (-1), | |
170 | EMPTY_HOWTO (-1), | |
171 | EMPTY_HOWTO (-1), | |
172 | EMPTY_HOWTO (-1), | |
173 | ||
174 | HOWTO (R_VAX_PLT32, /* type */ | |
175 | 0, /* rightshift */ | |
176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
177 | 32, /* bitsize */ | |
b34976b6 | 178 | TRUE, /* pc_relative */ |
90ace9e9 JT |
179 | 0, /* bitpos */ |
180 | complain_overflow_bitfield, /* complain_on_overflow */ | |
181 | bfd_elf_generic_reloc, /* special_function */ | |
182 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 183 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
184 | 0, /* src_mask */ |
185 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 186 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
187 | |
188 | EMPTY_HOWTO (-1), | |
189 | EMPTY_HOWTO (-1), | |
190 | EMPTY_HOWTO (-1), | |
191 | EMPTY_HOWTO (-1), | |
192 | EMPTY_HOWTO (-1), | |
193 | ||
194 | HOWTO (R_VAX_COPY, /* type */ | |
195 | 0, /* rightshift */ | |
196 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
197 | 0, /* bitsize */ | |
b34976b6 | 198 | FALSE, /* pc_relative */ |
90ace9e9 JT |
199 | 0, /* bitpos */ |
200 | complain_overflow_dont, /* complain_on_overflow */ | |
201 | bfd_elf_generic_reloc, /* special_function */ | |
202 | "R_VAX_COPY", /* name */ | |
b34976b6 | 203 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
204 | 0, /* src_mask */ |
205 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 206 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
207 | |
208 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
209 | 0, /* rightshift */ | |
210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
211 | 32, /* bitsize */ | |
b34976b6 | 212 | FALSE, /* pc_relative */ |
90ace9e9 JT |
213 | 0, /* bitpos */ |
214 | complain_overflow_dont, /* complain_on_overflow */ | |
215 | bfd_elf_generic_reloc, /* special_function */ | |
216 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 217 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
218 | 0, /* src_mask */ |
219 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 220 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
221 | |
222 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
223 | 0, /* rightshift */ | |
224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
225 | 32, /* bitsize */ | |
b34976b6 | 226 | FALSE, /* pc_relative */ |
90ace9e9 JT |
227 | 0, /* bitpos */ |
228 | complain_overflow_dont, /* complain_on_overflow */ | |
229 | bfd_elf_generic_reloc, /* special_function */ | |
230 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 231 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
232 | 0, /* src_mask */ |
233 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 234 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
235 | |
236 | HOWTO (R_VAX_RELATIVE, /* type */ | |
237 | 0, /* rightshift */ | |
238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
239 | 32, /* bitsize */ | |
b34976b6 | 240 | FALSE, /* pc_relative */ |
90ace9e9 JT |
241 | 0, /* bitpos */ |
242 | complain_overflow_dont, /* complain_on_overflow */ | |
243 | bfd_elf_generic_reloc, /* special_function */ | |
244 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 245 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
246 | 0, /* src_mask */ |
247 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 248 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
249 | |
250 | /* GNU extension to record C++ vtable hierarchy */ | |
251 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
252 | 0, /* rightshift */ | |
253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
254 | 0, /* bitsize */ | |
b34976b6 | 255 | FALSE, /* pc_relative */ |
90ace9e9 JT |
256 | 0, /* bitpos */ |
257 | complain_overflow_dont, /* complain_on_overflow */ | |
258 | NULL, /* special_function */ | |
259 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 260 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
261 | 0, /* src_mask */ |
262 | 0, /* dst_mask */ | |
b34976b6 | 263 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
264 | |
265 | /* GNU extension to record C++ vtable member usage */ | |
266 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
267 | 0, /* rightshift */ | |
268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
269 | 0, /* bitsize */ | |
b34976b6 | 270 | FALSE, /* pc_relative */ |
90ace9e9 JT |
271 | 0, /* bitpos */ |
272 | complain_overflow_dont, /* complain_on_overflow */ | |
273 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
274 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 275 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
276 | 0, /* src_mask */ |
277 | 0, /* dst_mask */ | |
b34976b6 | 278 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
279 | }; |
280 | ||
281 | static void | |
ce71b576 NC |
282 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
283 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
284 | { |
285 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
286 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
287 | } | |
288 | ||
289 | #define elf_info_to_howto rtype_to_howto | |
290 | ||
291 | static const struct | |
292 | { | |
293 | bfd_reloc_code_real_type bfd_val; | |
294 | int elf_val; | |
295 | } reloc_map[] = { | |
296 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
297 | { BFD_RELOC_32, R_VAX_32 }, | |
298 | { BFD_RELOC_16, R_VAX_16 }, | |
299 | { BFD_RELOC_8, R_VAX_8 }, | |
300 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
301 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
302 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
303 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
304 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
305 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
306 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
307 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
308 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
309 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
310 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
311 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
312 | }; | |
313 | ||
314 | static reloc_howto_type * | |
ce71b576 | 315 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
316 | { |
317 | unsigned int i; | |
318 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
319 | { | |
320 | if (reloc_map[i].bfd_val == code) | |
321 | return &howto_table[reloc_map[i].elf_val]; | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | ||
157090f7 AM |
326 | static reloc_howto_type * |
327 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
328 | const char *r_name) | |
329 | { | |
330 | unsigned int i; | |
331 | ||
332 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
333 | if (howto_table[i].name != NULL | |
334 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
335 | return &howto_table[i]; | |
336 | ||
337 | return NULL; | |
338 | } | |
339 | ||
90ace9e9 | 340 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 341 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
90ace9e9 JT |
342 | #define ELF_ARCH bfd_arch_vax |
343 | /* end code generated by elf.el */ | |
90ace9e9 JT |
344 | \f |
345 | /* Functions for the VAX ELF linker. */ | |
346 | ||
347 | /* The name of the dynamic interpreter. This is put in the .interp | |
348 | section. */ | |
349 | ||
350 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
351 | ||
352 | /* The size in bytes of an entry in the procedure linkage table. */ | |
353 | ||
354 | #define PLT_ENTRY_SIZE 12 | |
355 | ||
356 | /* The first entry in a procedure linkage table looks like this. See | |
357 | the SVR4 ABI VAX supplement to see how this works. */ | |
358 | ||
359 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
360 | { | |
361 | 0xdd, 0xef, /* pushl l^ */ | |
362 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
363 | 0x17, 0xff, /* jmp @L^(pc) */ | |
364 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
365 | }; | |
366 | ||
367 | /* Subsequent entries in a procedure linkage table look like this. */ | |
368 | ||
369 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
370 | { | |
371 | 0x40, 0x00, /* .word ^M<r6> */ | |
372 | 0x16, 0xef, /* jsb L^(pc) */ | |
373 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ | |
374 | 0, 0, 0, 0, /* index into .rela.plt */ | |
375 | }; | |
376 | ||
377 | /* The VAX linker needs to keep track of the number of relocs that it | |
378 | decides to copy in check_relocs for each symbol. This is so that it | |
379 | can discard PC relative relocs if it doesn't need them when linking | |
380 | with -Bsymbolic. We store the information in a field extending the | |
381 | regular ELF linker hash table. */ | |
382 | ||
383 | /* This structure keeps track of the number of PC relative relocs we have | |
384 | copied for a given symbol. */ | |
385 | ||
386 | struct elf_vax_pcrel_relocs_copied | |
387 | { | |
388 | /* Next section. */ | |
389 | struct elf_vax_pcrel_relocs_copied *next; | |
390 | /* A section in dynobj. */ | |
391 | asection *section; | |
392 | /* Number of relocs copied in this section. */ | |
393 | bfd_size_type count; | |
394 | }; | |
395 | ||
396 | /* VAX ELF linker hash entry. */ | |
397 | ||
398 | struct elf_vax_link_hash_entry | |
399 | { | |
400 | struct elf_link_hash_entry root; | |
401 | ||
402 | /* Number of PC relative relocs copied for this symbol. */ | |
403 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
404 | ||
405 | bfd_vma got_addend; | |
406 | }; | |
407 | ||
408 | /* VAX ELF linker hash table. */ | |
409 | ||
410 | struct elf_vax_link_hash_table | |
411 | { | |
412 | struct elf_link_hash_table root; | |
413 | }; | |
414 | ||
415 | /* Declare this now that the above structures are defined. */ | |
416 | ||
ce71b576 NC |
417 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
418 | PTR); | |
90ace9e9 | 419 | |
b29635ba JT |
420 | /* Declare this now that the above structures are defined. */ |
421 | ||
ce71b576 NC |
422 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
423 | PTR); | |
b29635ba | 424 | |
90ace9e9 JT |
425 | /* Traverse an VAX ELF linker hash table. */ |
426 | ||
427 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
428 | (elf_link_hash_traverse \ | |
429 | (&(table)->root, \ | |
ce71b576 | 430 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
90ace9e9 JT |
431 | (info))) |
432 | ||
433 | /* Get the VAX ELF linker hash table from a link_info structure. */ | |
434 | ||
ce71b576 | 435 | #define elf_vax_hash_table(p) ((struct elf_vax_link_hash_table *) (p)->hash) |
90ace9e9 JT |
436 | |
437 | /* Create an entry in an VAX ELF linker hash table. */ | |
438 | ||
439 | static struct bfd_hash_entry * | |
ce71b576 NC |
440 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
441 | struct bfd_hash_table *table, | |
442 | const char *string) | |
90ace9e9 JT |
443 | { |
444 | struct elf_vax_link_hash_entry *ret = | |
445 | (struct elf_vax_link_hash_entry *) entry; | |
446 | ||
447 | /* Allocate the structure if it has not already been allocated by a | |
448 | subclass. */ | |
ce71b576 | 449 | if (ret == NULL) |
90ace9e9 JT |
450 | ret = ((struct elf_vax_link_hash_entry *) |
451 | bfd_hash_allocate (table, | |
452 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 453 | if (ret == NULL) |
90ace9e9 JT |
454 | return (struct bfd_hash_entry *) ret; |
455 | ||
456 | /* Call the allocation method of the superclass. */ | |
457 | ret = ((struct elf_vax_link_hash_entry *) | |
458 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
459 | table, string)); | |
ce71b576 | 460 | if (ret != NULL) |
90ace9e9 JT |
461 | { |
462 | ret->pcrel_relocs_copied = NULL; | |
463 | } | |
464 | ||
465 | return (struct bfd_hash_entry *) ret; | |
466 | } | |
467 | ||
468 | /* Create an VAX ELF linker hash table. */ | |
469 | ||
470 | static struct bfd_link_hash_table * | |
ce71b576 | 471 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 JT |
472 | { |
473 | struct elf_vax_link_hash_table *ret; | |
474 | bfd_size_type amt = sizeof (struct elf_vax_link_hash_table); | |
475 | ||
ce71b576 NC |
476 | ret = bfd_malloc (amt); |
477 | if (ret == NULL) | |
90ace9e9 JT |
478 | return NULL; |
479 | ||
66eb6687 AM |
480 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
481 | elf_vax_link_hash_newfunc, | |
482 | sizeof (struct elf_vax_link_hash_entry))) | |
90ace9e9 JT |
483 | { |
484 | free (ret); | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | return &ret->root.root; | |
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 JT |
504 | { |
505 | flagword out_flags; | |
506 | flagword in_flags; | |
507 | ||
508 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
509 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 510 | return TRUE; |
90ace9e9 JT |
511 | |
512 | in_flags = elf_elfheader (ibfd)->e_flags; | |
513 | out_flags = elf_elfheader (obfd)->e_flags; | |
514 | ||
515 | if (!elf_flags_init (obfd)) | |
516 | { | |
b34976b6 | 517 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
518 | elf_elfheader (obfd)->e_flags = in_flags; |
519 | } | |
520 | ||
b34976b6 | 521 | return TRUE; |
90ace9e9 JT |
522 | } |
523 | ||
524 | /* Display the flags field */ | |
b34976b6 | 525 | static bfd_boolean |
ce71b576 | 526 | elf32_vax_print_private_bfd_data (bfd *abfd, PTR ptr) |
90ace9e9 JT |
527 | { |
528 | FILE *file = (FILE *) ptr; | |
529 | ||
530 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
531 | ||
532 | /* Print normal ELF private data. */ | |
533 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
534 | ||
535 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
536 | ||
537 | /* xgettext:c-format */ | |
538 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
539 | ||
179d3252 | 540 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
541 | fprintf (file, _(" [nonpic]")); |
542 | ||
179d3252 | 543 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
544 | fprintf (file, _(" [d-float]")); |
545 | ||
179d3252 | 546 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
547 | fprintf (file, _(" [g-float]")); |
548 | ||
549 | fputc ('\n', file); | |
550 | ||
b34976b6 | 551 | return TRUE; |
90ace9e9 JT |
552 | } |
553 | /* Look through the relocs for a section during the first phase, and | |
554 | allocate space in the global offset table or procedure linkage | |
555 | table. */ | |
556 | ||
b34976b6 | 557 | static bfd_boolean |
ce71b576 NC |
558 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
559 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
560 | { |
561 | bfd *dynobj; | |
562 | Elf_Internal_Shdr *symtab_hdr; | |
563 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
564 | const Elf_Internal_Rela *rel; |
565 | const Elf_Internal_Rela *rel_end; | |
566 | asection *sgot; | |
567 | asection *srelgot; | |
568 | asection *sreloc; | |
569 | ||
1049f94e | 570 | if (info->relocatable) |
b34976b6 | 571 | return TRUE; |
90ace9e9 JT |
572 | |
573 | dynobj = elf_hash_table (info)->dynobj; | |
574 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
575 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
576 | |
577 | sgot = NULL; | |
578 | srelgot = NULL; | |
579 | sreloc = NULL; | |
580 | ||
581 | rel_end = relocs + sec->reloc_count; | |
582 | for (rel = relocs; rel < rel_end; rel++) | |
583 | { | |
584 | unsigned long r_symndx; | |
585 | struct elf_link_hash_entry *h; | |
586 | ||
587 | r_symndx = ELF32_R_SYM (rel->r_info); | |
588 | ||
589 | if (r_symndx < symtab_hdr->sh_info) | |
590 | h = NULL; | |
591 | else | |
973a3492 L |
592 | { |
593 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
594 | while (h->root.type == bfd_link_hash_indirect | |
595 | || h->root.type == bfd_link_hash_warning) | |
596 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
597 | } | |
90ace9e9 JT |
598 | |
599 | switch (ELF32_R_TYPE (rel->r_info)) | |
600 | { | |
601 | case R_VAX_GOT32: | |
602 | if (h != NULL | |
603 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
604 | break; | |
605 | ||
606 | /* This symbol requires a global offset table entry. */ | |
607 | ||
608 | if (dynobj == NULL) | |
609 | { | |
610 | /* Create the .got section. */ | |
611 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
612 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 613 | return FALSE; |
90ace9e9 JT |
614 | } |
615 | ||
616 | if (sgot == NULL) | |
617 | { | |
618 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
619 | BFD_ASSERT (sgot != NULL); | |
620 | } | |
621 | ||
622 | if (srelgot == NULL | |
623 | && (h != NULL || info->shared)) | |
624 | { | |
625 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
626 | if (srelgot == NULL) | |
627 | { | |
3496cb2a L |
628 | srelgot = bfd_make_section_with_flags (dynobj, |
629 | ".rela.got", | |
630 | (SEC_ALLOC | |
631 | | SEC_LOAD | |
632 | | SEC_HAS_CONTENTS | |
633 | | SEC_IN_MEMORY | |
634 | | SEC_LINKER_CREATED | |
635 | | SEC_READONLY)); | |
90ace9e9 | 636 | if (srelgot == NULL |
90ace9e9 | 637 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 638 | return FALSE; |
90ace9e9 JT |
639 | } |
640 | } | |
641 | ||
642 | if (h != NULL) | |
643 | { | |
644 | struct elf_vax_link_hash_entry *eh; | |
645 | ||
646 | eh = (struct elf_vax_link_hash_entry *) h; | |
647 | if (h->got.refcount == -1) | |
648 | { | |
649 | h->got.refcount = 1; | |
650 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
651 | } |
652 | else | |
653 | { | |
654 | h->got.refcount++; | |
655 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
656 | (*_bfd_error_handler) | |
657 | (_("%s: warning: GOT addend of %ld to `%s' does not match previous GOT addend of %ld"), | |
658 | bfd_get_filename (abfd), rel->r_addend, | |
659 | h->root.root.string, | |
660 | eh->got_addend); | |
cedb70c5 | 661 | |
90ace9e9 JT |
662 | } |
663 | } | |
664 | break; | |
665 | ||
666 | case R_VAX_PLT32: | |
667 | /* This symbol requires a procedure linkage table entry. We | |
668 | actually build the entry in adjust_dynamic_symbol, | |
669 | because this might be a case of linking PIC code which is | |
670 | never referenced by a dynamic object, in which case we | |
671 | don't need to generate a procedure linkage table entry | |
672 | after all. */ | |
673 | ||
674 | /* If this is a local symbol, we resolve it directly without | |
675 | creating a procedure linkage table entry. */ | |
676 | if (h == NULL) | |
677 | continue; | |
678 | ||
f5385ebf | 679 | h->needs_plt = 1; |
90ace9e9 JT |
680 | if (h->plt.refcount == -1) |
681 | h->plt.refcount = 1; | |
682 | else | |
683 | h->plt.refcount++; | |
684 | break; | |
685 | ||
686 | case R_VAX_PC8: | |
687 | case R_VAX_PC16: | |
688 | case R_VAX_PC32: | |
689 | /* If we are creating a shared library and this is not a local | |
690 | symbol, we need to copy the reloc into the shared library. | |
691 | However when linking with -Bsymbolic and this is a global | |
692 | symbol which is defined in an object we are including in the | |
693 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
694 | reloc directly. At this point we have not seen all the input | |
695 | files, so it is possible that DEF_REGULAR is not set now but | |
696 | will be set later (it is never cleared). We account for that | |
697 | possibility below by storing information in the | |
698 | pcrel_relocs_copied field of the hash table entry. */ | |
699 | if (!(info->shared | |
700 | && (sec->flags & SEC_ALLOC) != 0 | |
701 | && h != NULL | |
702 | && (!info->symbolic | |
f5385ebf | 703 | || !h->def_regular))) |
90ace9e9 JT |
704 | { |
705 | if (h != NULL) | |
706 | { | |
707 | /* Make sure a plt entry is created for this symbol if | |
708 | it turns out to be a function defined by a dynamic | |
709 | object. */ | |
710 | if (h->plt.refcount == -1) | |
711 | h->plt.refcount = 1; | |
712 | else | |
713 | h->plt.refcount++; | |
714 | } | |
715 | break; | |
716 | } | |
717 | /* Fall through. */ | |
718 | case R_VAX_8: | |
719 | case R_VAX_16: | |
720 | case R_VAX_32: | |
721 | if (h != NULL) | |
722 | { | |
723 | /* Make sure a plt entry is created for this symbol if it | |
724 | turns out to be a function defined by a dynamic object. */ | |
725 | if (h->plt.refcount == -1) | |
726 | h->plt.refcount = 1; | |
727 | else | |
728 | h->plt.refcount++; | |
729 | } | |
730 | ||
731 | /* If we are creating a shared library, we need to copy the | |
732 | reloc into the shared library. */ | |
733 | if (info->shared | |
734 | && (sec->flags & SEC_ALLOC) != 0) | |
735 | { | |
736 | /* When creating a shared object, we must copy these | |
737 | reloc types into the output file. We create a reloc | |
738 | section in dynobj and make room for this reloc. */ | |
739 | if (sreloc == NULL) | |
740 | { | |
741 | const char *name; | |
742 | ||
743 | name = (bfd_elf_string_from_elf_section | |
744 | (abfd, | |
745 | elf_elfheader (abfd)->e_shstrndx, | |
746 | elf_section_data (sec)->rel_hdr.sh_name)); | |
747 | if (name == NULL) | |
b34976b6 | 748 | return FALSE; |
90ace9e9 | 749 | |
0112cd26 | 750 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
90ace9e9 JT |
751 | && strcmp (bfd_get_section_name (abfd, sec), |
752 | name + 5) == 0); | |
753 | ||
754 | sreloc = bfd_get_section_by_name (dynobj, name); | |
755 | if (sreloc == NULL) | |
756 | { | |
3496cb2a L |
757 | sreloc = bfd_make_section_with_flags (dynobj, |
758 | name, | |
759 | (SEC_ALLOC | |
760 | | SEC_LOAD | |
761 | | SEC_HAS_CONTENTS | |
762 | | SEC_IN_MEMORY | |
763 | | SEC_LINKER_CREATED | |
764 | | SEC_READONLY)); | |
90ace9e9 | 765 | if (sreloc == NULL |
90ace9e9 | 766 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 767 | return FALSE; |
90ace9e9 JT |
768 | } |
769 | if (sec->flags & SEC_READONLY) | |
770 | info->flags |= DF_TEXTREL; | |
771 | } | |
772 | ||
eea6121a | 773 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
774 | |
775 | /* If we are linking with -Bsymbolic, we count the number of | |
776 | PC relative relocations we have entered for this symbol, | |
777 | so that we can discard them again if the symbol is later | |
778 | defined by a regular object. Note that this function is | |
19852a2a | 779 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
780 | which means that h is really a pointer to an |
781 | elf_vax_link_hash_entry. */ | |
782 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
783 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
784 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
785 | && info->symbolic) |
786 | { | |
787 | struct elf_vax_link_hash_entry *eh; | |
788 | struct elf_vax_pcrel_relocs_copied *p; | |
789 | ||
790 | eh = (struct elf_vax_link_hash_entry *) h; | |
791 | ||
792 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
793 | if (p->section == sreloc) | |
794 | break; | |
795 | ||
796 | if (p == NULL) | |
797 | { | |
798 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
799 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
800 | if (p == NULL) | |
b34976b6 | 801 | return FALSE; |
90ace9e9 JT |
802 | p->next = eh->pcrel_relocs_copied; |
803 | eh->pcrel_relocs_copied = p; | |
804 | p->section = sreloc; | |
805 | p->count = 0; | |
806 | } | |
807 | ||
808 | ++p->count; | |
809 | } | |
810 | } | |
811 | ||
812 | break; | |
813 | ||
814 | /* This relocation describes the C++ object vtable hierarchy. | |
815 | Reconstruct it for later use during GC. */ | |
816 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 817 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 818 | return FALSE; |
90ace9e9 JT |
819 | break; |
820 | ||
821 | /* This relocation describes which C++ vtable entries are actually | |
822 | used. Record for later use during GC. */ | |
823 | case R_VAX_GNU_VTENTRY: | |
d17e0c6e JB |
824 | BFD_ASSERT (h != NULL); |
825 | if (h != NULL | |
826 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 827 | return FALSE; |
90ace9e9 JT |
828 | break; |
829 | ||
830 | default: | |
831 | break; | |
832 | } | |
833 | } | |
834 | ||
b34976b6 | 835 | return TRUE; |
90ace9e9 JT |
836 | } |
837 | ||
838 | /* Return the section that should be marked against GC for a given | |
839 | relocation. */ | |
840 | ||
841 | static asection * | |
ce71b576 | 842 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 843 | struct bfd_link_info *info, |
ce71b576 NC |
844 | Elf_Internal_Rela *rel, |
845 | struct elf_link_hash_entry *h, | |
846 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
847 | { |
848 | if (h != NULL) | |
07adf181 AM |
849 | switch (ELF32_R_TYPE (rel->r_info)) |
850 | { | |
851 | case R_VAX_GNU_VTINHERIT: | |
852 | case R_VAX_GNU_VTENTRY: | |
853 | return NULL; | |
854 | } | |
855 | ||
856 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
857 | } |
858 | ||
859 | /* Update the got entry reference counts for the section being removed. */ | |
860 | ||
b34976b6 | 861 | static bfd_boolean |
ce71b576 NC |
862 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
863 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
864 | { |
865 | Elf_Internal_Shdr *symtab_hdr; | |
866 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 867 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 868 | bfd *dynobj; |
90ace9e9 | 869 | |
7dda2462 TG |
870 | if (info->relocatable) |
871 | return TRUE; | |
872 | ||
90ace9e9 JT |
873 | dynobj = elf_hash_table (info)->dynobj; |
874 | if (dynobj == NULL) | |
b34976b6 | 875 | return TRUE; |
90ace9e9 | 876 | |
babfd660 KH |
877 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
878 | sym_hashes = elf_sym_hashes (abfd); | |
879 | ||
90ace9e9 JT |
880 | relend = relocs + sec->reloc_count; |
881 | for (rel = relocs; rel < relend; rel++) | |
882 | { | |
babfd660 | 883 | unsigned long r_symndx; |
3eb128b2 AM |
884 | struct elf_link_hash_entry *h = NULL; |
885 | ||
886 | r_symndx = ELF32_R_SYM (rel->r_info); | |
887 | if (r_symndx >= symtab_hdr->sh_info) | |
888 | { | |
889 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
890 | while (h->root.type == bfd_link_hash_indirect | |
891 | || h->root.type == bfd_link_hash_warning) | |
892 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
893 | } | |
babfd660 | 894 | |
90ace9e9 JT |
895 | switch (ELF32_R_TYPE (rel->r_info)) |
896 | { | |
897 | case R_VAX_GOT32: | |
3eb128b2 AM |
898 | if (h != NULL && h->got.refcount > 0) |
899 | --h->got.refcount; | |
90ace9e9 JT |
900 | break; |
901 | ||
902 | case R_VAX_PLT32: | |
903 | case R_VAX_PC8: | |
904 | case R_VAX_PC16: | |
905 | case R_VAX_PC32: | |
906 | case R_VAX_8: | |
907 | case R_VAX_16: | |
908 | case R_VAX_32: | |
3eb128b2 AM |
909 | if (h != NULL && h->plt.refcount > 0) |
910 | --h->plt.refcount; | |
90ace9e9 JT |
911 | break; |
912 | ||
913 | default: | |
914 | break; | |
915 | } | |
916 | } | |
917 | ||
b34976b6 | 918 | return TRUE; |
90ace9e9 JT |
919 | } |
920 | ||
921 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
922 | regular object. The current definition is in some section of the | |
923 | dynamic object, but we're not including those sections. We have to | |
924 | change the definition to something the rest of the link can | |
925 | understand. */ | |
926 | ||
b34976b6 | 927 | static bfd_boolean |
90ace9e9 JT |
928 | elf_vax_adjust_dynamic_symbol (info, h) |
929 | struct bfd_link_info *info; | |
930 | struct elf_link_hash_entry *h; | |
931 | { | |
932 | bfd *dynobj; | |
933 | asection *s; | |
90ace9e9 JT |
934 | |
935 | dynobj = elf_hash_table (info)->dynobj; | |
936 | ||
937 | /* Make sure we know what is going on here. */ | |
938 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 939 | && (h->needs_plt |
f6e332e6 | 940 | || h->u.weakdef != NULL |
f5385ebf AM |
941 | || (h->def_dynamic |
942 | && h->ref_regular | |
943 | && !h->def_regular))); | |
90ace9e9 JT |
944 | |
945 | /* If this is a function, put it in the procedure linkage table. We | |
946 | will fill in the contents of the procedure linkage table later, | |
947 | when we know the address of the .got section. */ | |
948 | if (h->type == STT_FUNC | |
f5385ebf | 949 | || h->needs_plt) |
90ace9e9 JT |
950 | { |
951 | if (! info->shared | |
f5385ebf AM |
952 | && !h->def_dynamic |
953 | && !h->ref_dynamic | |
90ace9e9 JT |
954 | /* We must always create the plt entry if it was referenced |
955 | by a PLTxxO relocation. In this case we already recorded | |
956 | it as a dynamic symbol. */ | |
957 | && h->dynindx == -1) | |
958 | { | |
959 | /* This case can occur if we saw a PLTxx reloc in an input | |
960 | file, but the symbol was never referred to by a dynamic | |
961 | object. In such a case, we don't actually need to build | |
962 | a procedure linkage table, and we can just do a PCxx | |
963 | reloc instead. */ | |
f5385ebf | 964 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 965 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 966 | return TRUE; |
90ace9e9 JT |
967 | } |
968 | ||
969 | /* GC may have rendered this entry unused. */ | |
970 | if (h->plt.refcount <= 0) | |
971 | { | |
f5385ebf | 972 | h->needs_plt = 0; |
90ace9e9 | 973 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 974 | return TRUE; |
90ace9e9 JT |
975 | } |
976 | ||
977 | /* Make sure this symbol is output as a dynamic symbol. */ | |
978 | if (h->dynindx == -1) | |
979 | { | |
c152c796 | 980 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 981 | return FALSE; |
90ace9e9 JT |
982 | } |
983 | ||
984 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
985 | BFD_ASSERT (s != NULL); | |
986 | ||
987 | /* If this is the first .plt entry, make room for the special | |
988 | first entry. */ | |
eea6121a | 989 | if (s->size == 0) |
90ace9e9 | 990 | { |
eea6121a | 991 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
992 | } |
993 | ||
994 | /* If this symbol is not defined in a regular file, and we are | |
995 | not generating a shared library, then set the symbol to this | |
996 | location in the .plt. This is required to make function | |
997 | pointers compare as equal between the normal executable and | |
998 | the shared library. */ | |
999 | if (!info->shared | |
f5385ebf | 1000 | && !h->def_regular) |
90ace9e9 JT |
1001 | { |
1002 | h->root.u.def.section = s; | |
eea6121a | 1003 | h->root.u.def.value = s->size; |
90ace9e9 JT |
1004 | } |
1005 | ||
eea6121a | 1006 | h->plt.offset = s->size; |
90ace9e9 JT |
1007 | |
1008 | /* Make room for this entry. */ | |
eea6121a | 1009 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1010 | |
1011 | /* We also need to make an entry in the .got.plt section, which | |
1012 | will be placed in the .got section by the linker script. */ | |
1013 | ||
1014 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1015 | BFD_ASSERT (s != NULL); | |
eea6121a | 1016 | s->size += 4; |
90ace9e9 JT |
1017 | |
1018 | /* We also need to make an entry in the .rela.plt section. */ | |
1019 | ||
1020 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1021 | BFD_ASSERT (s != NULL); | |
eea6121a | 1022 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1023 | |
b34976b6 | 1024 | return TRUE; |
90ace9e9 JT |
1025 | } |
1026 | ||
1027 | /* Reinitialize the plt offset now that it is not used as a reference | |
1028 | count any more. */ | |
1029 | h->plt.offset = (bfd_vma) -1; | |
1030 | ||
1031 | /* If this is a weak symbol, and there is a real definition, the | |
1032 | processor independent code will have arranged for us to see the | |
1033 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1034 | if (h->u.weakdef != NULL) |
90ace9e9 | 1035 | { |
f6e332e6 AM |
1036 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1037 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1038 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1039 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1040 | return TRUE; |
90ace9e9 JT |
1041 | } |
1042 | ||
1043 | /* This is a reference to a symbol defined by a dynamic object which | |
1044 | is not a function. */ | |
1045 | ||
1046 | /* If we are creating a shared library, we must presume that the | |
1047 | only references to the symbol are via the global offset table. | |
1048 | For such cases we need not do anything here; the relocations will | |
1049 | be handled correctly by relocate_section. */ | |
1050 | if (info->shared) | |
b34976b6 | 1051 | return TRUE; |
90ace9e9 | 1052 | |
909272ee AM |
1053 | if (h->size == 0) |
1054 | { | |
1055 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1056 | h->root.root.string); | |
1057 | return TRUE; | |
1058 | } | |
1059 | ||
90ace9e9 JT |
1060 | /* We must allocate the symbol in our .dynbss section, which will |
1061 | become part of the .bss section of the executable. There will be | |
1062 | an entry for this symbol in the .dynsym section. The dynamic | |
1063 | object will contain position independent code, so all references | |
1064 | from the dynamic object to this symbol will go through the global | |
1065 | offset table. The dynamic linker will use the .dynsym entry to | |
1066 | determine the address it must put in the global offset table, so | |
1067 | both the dynamic object and the regular object will refer to the | |
1068 | same memory location for the variable. */ | |
1069 | ||
1070 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1071 | BFD_ASSERT (s != NULL); | |
1072 | ||
1073 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1074 | copy the initial value out of the dynamic object and into the | |
1075 | runtime process image. We need to remember the offset into the | |
1076 | .rela.bss section we are going to use. */ | |
1077 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1078 | { | |
1079 | asection *srel; | |
1080 | ||
1081 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1082 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1083 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1084 | h->needs_copy = 1; |
90ace9e9 JT |
1085 | } |
1086 | ||
027297b7 | 1087 | return _bfd_elf_adjust_dynamic_copy (h, s); |
90ace9e9 JT |
1088 | } |
1089 | ||
1090 | /* Set the sizes of the dynamic sections. */ | |
1091 | ||
b34976b6 | 1092 | static bfd_boolean |
ce71b576 | 1093 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1094 | { |
1095 | bfd *dynobj; | |
1096 | asection *s; | |
b34976b6 AM |
1097 | bfd_boolean plt; |
1098 | bfd_boolean relocs; | |
1099 | bfd_boolean reltext; | |
90ace9e9 JT |
1100 | |
1101 | dynobj = elf_hash_table (info)->dynobj; | |
1102 | BFD_ASSERT (dynobj != NULL); | |
1103 | ||
1104 | if (elf_hash_table (info)->dynamic_sections_created) | |
1105 | { | |
1106 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1107 | if (info->executable) |
90ace9e9 JT |
1108 | { |
1109 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1110 | BFD_ASSERT (s != NULL); | |
eea6121a | 1111 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1112 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1113 | } | |
1114 | } | |
1115 | else | |
1116 | { | |
1117 | /* We may have created entries in the .rela.got and .got sections. | |
1118 | However, if we are not creating the dynamic sections, we will | |
1119 | not actually use these entries. Reset the size of .rela.got | |
1120 | and .got, which will cause it to get stripped from the output | |
1121 | file below. */ | |
1122 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1123 | if (s != NULL) | |
eea6121a | 1124 | s->size = 0; |
90ace9e9 JT |
1125 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1126 | if (s != NULL) | |
eea6121a | 1127 | s->size = 0; |
90ace9e9 JT |
1128 | s = bfd_get_section_by_name (dynobj, ".got"); |
1129 | if (s != NULL) | |
eea6121a | 1130 | s->size = 0; |
90ace9e9 JT |
1131 | } |
1132 | ||
1133 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1134 | relative relocs against symbols defined in a regular object. We | |
1135 | allocated space for them in the check_relocs routine, but we will not | |
1136 | fill them in in the relocate_section routine. */ | |
1137 | if (info->shared && info->symbolic) | |
1138 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba | 1139 | elf_vax_discard_copies, |
ce71b576 | 1140 | NULL); |
b29635ba | 1141 | |
b34976b6 | 1142 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1143 | discard all the got entries we've recorded. Otherwise, we need to |
1144 | instantiate (allocate space for them). */ | |
1145 | elf_link_hash_traverse (elf_hash_table (info), | |
1146 | elf_vax_instantiate_got_entries, | |
1147 | (PTR) info); | |
90ace9e9 JT |
1148 | |
1149 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1150 | determined the sizes of the various dynamic sections. Allocate | |
1151 | memory for them. */ | |
b34976b6 AM |
1152 | plt = FALSE; |
1153 | relocs = FALSE; | |
1154 | reltext = FALSE; | |
90ace9e9 JT |
1155 | for (s = dynobj->sections; s != NULL; s = s->next) |
1156 | { | |
1157 | const char *name; | |
90ace9e9 JT |
1158 | |
1159 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1160 | continue; | |
1161 | ||
1162 | /* It's OK to base decisions on the section name, because none | |
1163 | of the dynobj section names depend upon the input files. */ | |
1164 | name = bfd_get_section_name (dynobj, s); | |
1165 | ||
90ace9e9 JT |
1166 | if (strcmp (name, ".plt") == 0) |
1167 | { | |
c456f082 AM |
1168 | /* Remember whether there is a PLT. */ |
1169 | plt = s->size != 0; | |
90ace9e9 | 1170 | } |
0112cd26 | 1171 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1172 | { |
c456f082 | 1173 | if (s->size != 0) |
90ace9e9 JT |
1174 | { |
1175 | asection *target; | |
1176 | ||
1177 | /* Remember whether there are any reloc sections other | |
1178 | than .rela.plt. */ | |
1179 | if (strcmp (name, ".rela.plt") != 0) | |
1180 | { | |
1181 | const char *outname; | |
1182 | ||
b34976b6 | 1183 | relocs = TRUE; |
90ace9e9 JT |
1184 | |
1185 | /* If this relocation section applies to a read only | |
1186 | section, then we probably need a DT_TEXTREL | |
1187 | entry. .rela.plt is actually associated with | |
1188 | .got.plt, which is never readonly. */ | |
1189 | outname = bfd_get_section_name (output_bfd, | |
1190 | s->output_section); | |
1191 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1192 | if (target != NULL | |
1193 | && (target->flags & SEC_READONLY) != 0 | |
1194 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1195 | reltext = TRUE; |
90ace9e9 JT |
1196 | } |
1197 | ||
1198 | /* We use the reloc_count field as a counter if we need | |
1199 | to copy relocs into the output file. */ | |
1200 | s->reloc_count = 0; | |
1201 | } | |
1202 | } | |
0112cd26 | 1203 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1204 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1205 | { |
1206 | /* It's not one of our sections, so don't allocate space. */ | |
1207 | continue; | |
1208 | } | |
1209 | ||
c456f082 | 1210 | if (s->size == 0) |
90ace9e9 | 1211 | { |
c456f082 AM |
1212 | /* If we don't need this section, strip it from the |
1213 | output file. This is mostly to handle .rela.bss and | |
1214 | .rela.plt. We must create both sections in | |
1215 | create_dynamic_sections, because they must be created | |
1216 | before the linker maps input sections to output | |
1217 | sections. The linker does that before | |
1218 | adjust_dynamic_symbol is called, and it is that | |
1219 | function which decides whether anything needs to go | |
1220 | into these sections. */ | |
8423293d | 1221 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1222 | continue; |
1223 | } | |
1224 | ||
c456f082 AM |
1225 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1226 | continue; | |
1227 | ||
90ace9e9 | 1228 | /* Allocate memory for the section contents. */ |
eea6121a | 1229 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1230 | if (s->contents == NULL) |
b34976b6 | 1231 | return FALSE; |
90ace9e9 JT |
1232 | } |
1233 | ||
1234 | if (elf_hash_table (info)->dynamic_sections_created) | |
1235 | { | |
1236 | /* Add some entries to the .dynamic section. We fill in the | |
1237 | values later, in elf_vax_finish_dynamic_sections, but we | |
1238 | must add the entries now so that we get the correct size for | |
1239 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1240 | dynamic linker and used by the debugger. */ | |
1241 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1242 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1243 | |
1244 | if (!info->shared) | |
1245 | { | |
1246 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1247 | return FALSE; |
90ace9e9 JT |
1248 | } |
1249 | ||
1250 | if (plt) | |
1251 | { | |
1252 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1253 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1254 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1255 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1256 | return FALSE; |
90ace9e9 JT |
1257 | } |
1258 | ||
1259 | if (relocs) | |
1260 | { | |
1261 | if (!add_dynamic_entry (DT_RELA, 0) | |
1262 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1263 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1264 | return FALSE; |
90ace9e9 JT |
1265 | } |
1266 | ||
1267 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1268 | { | |
1269 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1270 | return FALSE; |
90ace9e9 JT |
1271 | } |
1272 | } | |
1273 | #undef add_dynamic_entry | |
1274 | ||
b34976b6 | 1275 | return TRUE; |
90ace9e9 JT |
1276 | } |
1277 | ||
1278 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1279 | creating a shared object with -Bsymbolic. It discards the space | |
1280 | allocated to copy PC relative relocs against symbols which are defined | |
1281 | in regular objects. We allocated space for them in the check_relocs | |
1282 | routine, but we won't fill them in in the relocate_section routine. */ | |
1283 | ||
b34976b6 | 1284 | static bfd_boolean |
ce71b576 NC |
1285 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
1286 | PTR ignore ATTRIBUTE_UNUSED) | |
90ace9e9 JT |
1287 | { |
1288 | struct elf_vax_pcrel_relocs_copied *s; | |
1289 | ||
1290 | if (h->root.root.type == bfd_link_hash_warning) | |
1291 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1292 | ||
1293 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1294 | if (!h->root.def_regular) |
b34976b6 | 1295 | return TRUE; |
90ace9e9 JT |
1296 | |
1297 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1298 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1299 | |
b34976b6 | 1300 | return TRUE; |
90ace9e9 JT |
1301 | } |
1302 | ||
b29635ba JT |
1303 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1304 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1305 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1306 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1307 | creating a shared object or executable, space in the .got and .rela.got | |
1308 | will be reserved for the symbol. */ | |
1309 | ||
b34976b6 | 1310 | static bfd_boolean |
ce71b576 | 1311 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, PTR infoptr) |
b29635ba JT |
1312 | { |
1313 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1314 | bfd *dynobj; | |
1315 | asection *sgot; | |
1316 | asection *srelgot; | |
b34976b6 | 1317 | |
b29635ba JT |
1318 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1319 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1320 | return TRUE; |
b29635ba JT |
1321 | |
1322 | dynobj = elf_hash_table (info)->dynobj; | |
1323 | if (dynobj == NULL) | |
b34976b6 | 1324 | return TRUE; |
b29635ba JT |
1325 | |
1326 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1327 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1328 | ||
1329 | if (!elf_hash_table (info)->dynamic_sections_created | |
1330 | || (info->shared && info->symbolic)) | |
1331 | { | |
1332 | h->got.refcount = 0; | |
1333 | h->got.offset = (bfd_vma) -1; | |
1334 | h->plt.refcount = 0; | |
1335 | h->plt.offset = (bfd_vma) -1; | |
1336 | } | |
1337 | else if (h->got.refcount > 0) | |
1338 | { | |
1339 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1340 | if (h->dynindx == -1) | |
1341 | { | |
c152c796 | 1342 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1343 | return FALSE; |
b29635ba JT |
1344 | } |
1345 | ||
1346 | /* Allocate space in the .got and .rela.got sections. */ | |
eea6121a AM |
1347 | sgot->size += 4; |
1348 | srelgot->size += sizeof (Elf32_External_Rela); | |
b29635ba JT |
1349 | } |
1350 | ||
b34976b6 | 1351 | return TRUE; |
b29635ba JT |
1352 | } |
1353 | ||
90ace9e9 JT |
1354 | /* Relocate an VAX ELF section. */ |
1355 | ||
b34976b6 | 1356 | static bfd_boolean |
ce71b576 NC |
1357 | elf_vax_relocate_section (bfd *output_bfd, |
1358 | struct bfd_link_info *info, | |
1359 | bfd *input_bfd, | |
1360 | asection *input_section, | |
1361 | bfd_byte *contents, | |
1362 | Elf_Internal_Rela *relocs, | |
1363 | Elf_Internal_Sym *local_syms, | |
1364 | asection **local_sections) | |
90ace9e9 JT |
1365 | { |
1366 | bfd *dynobj; | |
1367 | Elf_Internal_Shdr *symtab_hdr; | |
1368 | struct elf_link_hash_entry **sym_hashes; | |
1369 | bfd_vma *local_got_offsets; | |
1370 | bfd_vma plt_index; | |
1371 | bfd_vma got_offset; | |
1372 | asection *sgot; | |
1373 | asection *splt; | |
1374 | asection *sgotplt; | |
1375 | asection *sreloc; | |
1376 | Elf_Internal_Rela *rel; | |
1377 | Elf_Internal_Rela *relend; | |
1378 | ||
1379 | dynobj = elf_hash_table (info)->dynobj; | |
1380 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1381 | sym_hashes = elf_sym_hashes (input_bfd); | |
1382 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1383 | ||
1384 | sgot = NULL; | |
1385 | splt = NULL; | |
1386 | sgotplt = NULL; | |
1387 | sreloc = NULL; | |
1388 | ||
1389 | rel = relocs; | |
1390 | relend = relocs + input_section->reloc_count; | |
1391 | for (; rel < relend; rel++) | |
1392 | { | |
1393 | int r_type; | |
1394 | reloc_howto_type *howto; | |
1395 | unsigned long r_symndx; | |
1396 | struct elf_link_hash_entry *h; | |
1397 | Elf_Internal_Sym *sym; | |
1398 | asection *sec; | |
1399 | bfd_vma relocation; | |
1400 | bfd_reloc_status_type r; | |
1401 | ||
1402 | r_type = ELF32_R_TYPE (rel->r_info); | |
1403 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1404 | { | |
1405 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1406 | return FALSE; |
90ace9e9 JT |
1407 | } |
1408 | howto = howto_table + r_type; | |
1409 | ||
f0fe0e16 | 1410 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1411 | h = NULL; |
1412 | sym = NULL; | |
1413 | sec = NULL; | |
1414 | if (r_symndx < symtab_hdr->sh_info) | |
1415 | { | |
1416 | sym = local_syms + r_symndx; | |
1417 | sec = local_sections[r_symndx]; | |
8517fae7 | 1418 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1419 | } |
1420 | else | |
1421 | { | |
560e09e9 NC |
1422 | bfd_boolean unresolved_reloc; |
1423 | bfd_boolean warned; | |
1424 | ||
b2a8e766 AM |
1425 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1426 | r_symndx, symtab_hdr, sym_hashes, | |
1427 | h, sec, relocation, | |
1428 | unresolved_reloc, warned); | |
ce71b576 | 1429 | |
560e09e9 | 1430 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1431 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1432 | && ((r_type == R_VAX_PLT32 |
90ace9e9 JT |
1433 | && h->plt.offset != (bfd_vma) -1 |
1434 | && elf_hash_table (info)->dynamic_sections_created) | |
1435 | || (r_type == R_VAX_GOT32 | |
1436 | && strcmp (h->root.root.string, | |
1437 | "_GLOBAL_OFFSET_TABLE_") != 0 | |
1438 | && elf_hash_table (info)->dynamic_sections_created | |
1439 | && (! info->shared | |
1440 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1441 | || !h->def_regular)) |
90ace9e9 JT |
1442 | || (info->shared |
1443 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1444 | || !h->def_regular) |
90ace9e9 JT |
1445 | && ((input_section->flags & SEC_ALLOC) != 0 |
1446 | /* DWARF will emit R_VAX_32 relocations in its | |
1447 | sections against symbols defined externally | |
1448 | in shared libraries. We can't do anything | |
1449 | with them here. */ | |
1450 | ||
1451 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1452 | && h->def_dynamic)) |
90ace9e9 JT |
1453 | && (r_type == R_VAX_8 |
1454 | || r_type == R_VAX_16 | |
1455 | || r_type == R_VAX_32 | |
1456 | || r_type == R_VAX_PC8 | |
1457 | || r_type == R_VAX_PC16 | |
560e09e9 NC |
1458 | || r_type == R_VAX_PC32)))) |
1459 | /* In these cases, we don't need the relocation | |
1460 | value. We check specially because in some | |
1461 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1462 | relocation = 0; |
90ace9e9 JT |
1463 | } |
1464 | ||
ab96bf03 AM |
1465 | if (sec != NULL && elf_discarded_section (sec)) |
1466 | { | |
1467 | /* For relocs against symbols from removed linkonce sections, | |
1468 | or sections discarded by a linker script, we just want the | |
1469 | section contents zeroed. Avoid any special processing. */ | |
1470 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1471 | rel->r_info = 0; | |
1472 | rel->r_addend = 0; | |
1473 | continue; | |
1474 | } | |
1475 | ||
1476 | if (info->relocatable) | |
1477 | continue; | |
1478 | ||
90ace9e9 JT |
1479 | switch (r_type) |
1480 | { | |
1481 | case R_VAX_GOT32: | |
1482 | /* Relocation is to the address of the entry for this symbol | |
1483 | in the global offset table. */ | |
b29635ba | 1484 | if (h == NULL || h->got.offset == (bfd_vma) -1) |
90ace9e9 JT |
1485 | break; |
1486 | ||
1487 | /* Relocation is the offset of the entry for this symbol in | |
1488 | the global offset table. */ | |
1489 | ||
1490 | { | |
1491 | bfd_vma off; | |
1492 | ||
90ace9e9 JT |
1493 | if (sgot == NULL) |
1494 | { | |
1495 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1496 | BFD_ASSERT (sgot != NULL); | |
1497 | } | |
1498 | ||
1499 | BFD_ASSERT (h != NULL); | |
1500 | off = h->got.offset; | |
1501 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1502 | BFD_ASSERT (off < sgot->size); |
90ace9e9 JT |
1503 | |
1504 | if (info->shared | |
1505 | && h->dynindx == -1 | |
f5385ebf | 1506 | && h->def_regular) |
90ace9e9 JT |
1507 | { |
1508 | /* The symbol was forced to be local | |
1509 | because of a version file.. We must initialize | |
1510 | this entry in the global offset table. Since | |
1511 | the offset must always be a multiple of 4, we | |
1512 | use the least significant bit to record whether | |
1513 | we have initialized it already. | |
1514 | ||
1515 | When doing a dynamic link, we create a .rela.got | |
1516 | relocation entry to initialize the value. This | |
1517 | is done in the finish_dynamic_symbol routine. */ | |
1518 | if ((off & 1) != 0) | |
1519 | off &= ~1; | |
1520 | else | |
1521 | { | |
1522 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1523 | sgot->contents + off); | |
1524 | h->got.offset |= 1; | |
1525 | } | |
1526 | } else { | |
1527 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1528 | } | |
1529 | ||
1530 | relocation = sgot->output_offset + off; | |
b29635ba | 1531 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1532 | rel->r_addend = 0; |
1533 | ||
b29635ba JT |
1534 | /* Change the reference to be indirect. */ |
1535 | contents[rel->r_offset - 1] |= 0x10; | |
1536 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1537 | } |
1538 | break; | |
1539 | ||
1540 | case R_VAX_PLT32: | |
1541 | /* Relocation is to the entry for this symbol in the | |
1542 | procedure linkage table. */ | |
1543 | ||
1544 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1545 | without using the procedure linkage table. */ | |
1546 | if (h == NULL) | |
1547 | break; | |
1548 | ||
1549 | if (h->plt.offset == (bfd_vma) -1 | |
1550 | || !elf_hash_table (info)->dynamic_sections_created) | |
1551 | { | |
1552 | /* We didn't make a PLT entry for this symbol. This | |
1553 | happens when statically linking PIC code, or when | |
1554 | using -Bsymbolic. */ | |
1555 | break; | |
1556 | } | |
1557 | ||
1558 | if (splt == NULL) | |
1559 | { | |
1560 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1561 | BFD_ASSERT (splt != NULL); | |
1562 | } | |
1563 | ||
1564 | if (sgotplt == NULL) | |
1565 | { | |
1566 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1567 | BFD_ASSERT (splt != NULL); | |
1568 | } | |
1569 | ||
1570 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1571 | ||
1572 | /* Get the offset into the .got table of the entry that | |
1573 | corresponds to this function. Each .got entry is 4 bytes. | |
1574 | The first two are reserved. */ | |
1575 | got_offset = (plt_index + 3) * 4; | |
1576 | ||
1577 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1578 | of the plt itself. */ |
90ace9e9 JT |
1579 | relocation = (sgotplt->output_section->vma |
1580 | + sgotplt->output_offset | |
1581 | + got_offset); | |
1582 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1583 | if (rel->r_addend == 2) | |
1584 | { | |
1585 | h->plt.offset |= 1; | |
1586 | } | |
1587 | else if (rel->r_addend != 0) | |
1588 | (*_bfd_error_handler) | |
1589 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1590 | bfd_get_filename (input_bfd), rel->r_addend, | |
1591 | h->root.root.string, | |
1592 | bfd_get_section_name (input_bfd, input_section)); | |
1593 | rel->r_addend = 0; | |
1594 | ||
1595 | break; | |
1596 | ||
1597 | case R_VAX_PC8: | |
1598 | case R_VAX_PC16: | |
1599 | case R_VAX_PC32: | |
1600 | if (h == NULL) | |
1601 | break; | |
1602 | /* Fall through. */ | |
1603 | case R_VAX_8: | |
1604 | case R_VAX_16: | |
1605 | case R_VAX_32: | |
1606 | if (info->shared | |
1607 | && r_symndx != 0 | |
1608 | && (input_section->flags & SEC_ALLOC) != 0 | |
1609 | && ((r_type != R_VAX_PC8 | |
1610 | && r_type != R_VAX_PC16 | |
1611 | && r_type != R_VAX_PC32) | |
da6bcfca MT |
1612 | || ((input_section->flags & SEC_CODE) |
1613 | && (!info->symbolic | |
1614 | || (!h->def_regular && h->type != STT_SECTION))))) | |
90ace9e9 JT |
1615 | { |
1616 | Elf_Internal_Rela outrel; | |
947216bf | 1617 | bfd_byte *loc; |
b34976b6 | 1618 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1619 | |
1620 | /* When generating a shared object, these relocations | |
1621 | are copied into the output file to be resolved at run | |
1622 | time. */ | |
90ace9e9 JT |
1623 | if (sreloc == NULL) |
1624 | { | |
1625 | const char *name; | |
1626 | ||
1627 | name = (bfd_elf_string_from_elf_section | |
1628 | (input_bfd, | |
1629 | elf_elfheader (input_bfd)->e_shstrndx, | |
1630 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1631 | if (name == NULL) | |
b34976b6 | 1632 | return FALSE; |
90ace9e9 | 1633 | |
0112cd26 | 1634 | BFD_ASSERT (CONST_STRNEQ (name, ".rela") |
90ace9e9 JT |
1635 | && strcmp (bfd_get_section_name (input_bfd, |
1636 | input_section), | |
1637 | name + 5) == 0); | |
1638 | ||
1639 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1640 | BFD_ASSERT (sreloc != NULL); | |
1641 | } | |
1642 | ||
b34976b6 AM |
1643 | skip = FALSE; |
1644 | relocate = FALSE; | |
90ace9e9 JT |
1645 | |
1646 | outrel.r_offset = | |
1647 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1648 | rel->r_offset); | |
1649 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1650 | skip = TRUE; |
90ace9e9 | 1651 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1652 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1653 | outrel.r_offset += (input_section->output_section->vma |
1654 | + input_section->output_offset); | |
1655 | ||
1656 | if (skip) | |
1657 | memset (&outrel, 0, sizeof outrel); | |
1658 | /* h->dynindx may be -1 if the symbol was marked to | |
1659 | become local. */ | |
1660 | else if (h != NULL | |
1661 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1662 | || !h->def_regular)) |
90ace9e9 JT |
1663 | { |
1664 | BFD_ASSERT (h->dynindx != -1); | |
1665 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1666 | outrel.r_addend = relocation + rel->r_addend; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | if (r_type == R_VAX_32) | |
1671 | { | |
b34976b6 | 1672 | relocate = TRUE; |
90ace9e9 JT |
1673 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1674 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1675 | &contents[rel->r_offset]) == 0); | |
1676 | outrel.r_addend = relocation + rel->r_addend; | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | long indx; | |
1681 | ||
8517fae7 | 1682 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1683 | indx = 0; |
1684 | else if (sec == NULL || sec->owner == NULL) | |
1685 | { | |
1686 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1687 | return FALSE; |
90ace9e9 JT |
1688 | } |
1689 | else | |
1690 | { | |
1691 | asection *osec; | |
1692 | ||
74541ad4 AM |
1693 | /* We are turning this relocation into one |
1694 | against a section symbol. It would be | |
1695 | proper to subtract the symbol's value, | |
1696 | osec->vma, from the emitted reloc addend, | |
1697 | but ld.so expects buggy relocs. */ | |
90ace9e9 JT |
1698 | osec = sec->output_section; |
1699 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1700 | if (indx == 0) |
1701 | { | |
1702 | struct elf_link_hash_table *htab; | |
1703 | htab = elf_hash_table (info); | |
1704 | osec = htab->text_index_section; | |
1705 | indx = elf_section_data (osec)->dynindx; | |
1706 | } | |
1707 | BFD_ASSERT (indx != 0); | |
90ace9e9 JT |
1708 | } |
1709 | ||
1710 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1711 | outrel.r_addend = relocation + rel->r_addend; | |
1712 | } | |
1713 | } | |
1714 | ||
1715 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1716 | ".text") != 0 || |
90ace9e9 JT |
1717 | (info->shared |
1718 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1719 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1720 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1721 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1722 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1723 | { | |
1724 | if (h != NULL) | |
1725 | (*_bfd_error_handler) | |
1726 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1727 | bfd_get_filename (input_bfd), howto->name, | |
1728 | h->root.root.string, | |
1729 | bfd_get_section_name (input_bfd, input_section)); | |
1730 | else | |
1731 | (*_bfd_error_handler) | |
1732 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1733 | bfd_get_filename (input_bfd), howto->name, | |
1734 | outrel.r_addend, | |
1735 | bfd_get_section_name (input_bfd, input_section)); | |
1736 | } | |
947216bf AM |
1737 | loc = sreloc->contents; |
1738 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1739 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1740 | |
1741 | /* This reloc will be computed at runtime, so there's no | |
1742 | need to do anything now, except for R_VAX_32 | |
1743 | relocations that have been turned into | |
1744 | R_VAX_RELATIVE. */ | |
1745 | if (!relocate) | |
1746 | continue; | |
1747 | } | |
1748 | ||
1749 | break; | |
1750 | ||
1751 | case R_VAX_GNU_VTINHERIT: | |
1752 | case R_VAX_GNU_VTENTRY: | |
1753 | /* These are no-ops in the end. */ | |
1754 | continue; | |
1755 | ||
1756 | default: | |
1757 | break; | |
1758 | } | |
1759 | ||
b34976b6 | 1760 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1761 | So subtract the difference from the relocation amount since we can't |
1762 | add it to the offset. */ | |
90ace9e9 | 1763 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1764 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1765 | |
1766 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1767 | contents, rel->r_offset, | |
1768 | relocation, rel->r_addend); | |
1769 | ||
1770 | if (r != bfd_reloc_ok) | |
1771 | { | |
1772 | switch (r) | |
1773 | { | |
1774 | default: | |
1775 | case bfd_reloc_outofrange: | |
1776 | abort (); | |
1777 | case bfd_reloc_overflow: | |
1778 | { | |
1779 | const char *name; | |
1780 | ||
1781 | if (h != NULL) | |
dfeffb9f | 1782 | name = NULL; |
90ace9e9 JT |
1783 | else |
1784 | { | |
1785 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1786 | symtab_hdr->sh_link, | |
1787 | sym->st_name); | |
1788 | if (name == NULL) | |
b34976b6 | 1789 | return FALSE; |
90ace9e9 JT |
1790 | if (*name == '\0') |
1791 | name = bfd_section_name (input_bfd, sec); | |
1792 | } | |
1793 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1794 | (info, (h ? &h->root : NULL), name, howto->name, |
1795 | (bfd_vma) 0, input_bfd, input_section, | |
1796 | rel->r_offset))) | |
b34976b6 | 1797 | return FALSE; |
90ace9e9 JT |
1798 | } |
1799 | break; | |
1800 | } | |
1801 | } | |
1802 | } | |
1803 | ||
b34976b6 | 1804 | return TRUE; |
90ace9e9 JT |
1805 | } |
1806 | ||
1807 | /* Finish up dynamic symbol handling. We set the contents of various | |
1808 | dynamic sections here. */ | |
1809 | ||
b34976b6 | 1810 | static bfd_boolean |
ce71b576 NC |
1811 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1812 | struct elf_link_hash_entry *h, | |
1813 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1814 | { |
1815 | bfd *dynobj; | |
1816 | ||
1817 | dynobj = elf_hash_table (info)->dynobj; | |
1818 | ||
1819 | if (h->plt.offset != (bfd_vma) -1) | |
1820 | { | |
1821 | asection *splt; | |
1822 | asection *sgot; | |
1823 | asection *srela; | |
1824 | bfd_vma plt_index; | |
1825 | bfd_vma got_offset; | |
1826 | bfd_vma addend; | |
1827 | Elf_Internal_Rela rela; | |
947216bf | 1828 | bfd_byte *loc; |
90ace9e9 JT |
1829 | |
1830 | /* This symbol has an entry in the procedure linkage table. Set | |
1831 | it up. */ | |
90ace9e9 JT |
1832 | BFD_ASSERT (h->dynindx != -1); |
1833 | ||
1834 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1835 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1836 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1837 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1838 | ||
1839 | addend = 2 * (h->plt.offset & 1); | |
1840 | h->plt.offset &= ~1; | |
1841 | ||
1842 | /* Get the index in the procedure linkage table which | |
1843 | corresponds to this symbol. This is the index of this symbol | |
1844 | in all the symbols for which we are making plt entries. The | |
1845 | first entry in the procedure linkage table is reserved. */ | |
1846 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1847 | ||
1848 | /* Get the offset into the .got table of the entry that | |
1849 | corresponds to this function. Each .got entry is 4 bytes. | |
1850 | The first two are reserved. */ | |
1851 | got_offset = (plt_index + 3) * 4; | |
1852 | ||
1853 | /* Fill in the entry in the procedure linkage table. */ | |
1854 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1855 | PLT_ENTRY_SIZE); | |
1856 | ||
1857 | /* The offset is relative to the first extension word. */ | |
1858 | bfd_put_32 (output_bfd, | |
1859 | -(h->plt.offset + 8), | |
1860 | splt->contents + h->plt.offset + 4); | |
1861 | ||
1862 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1863 | splt->contents + h->plt.offset + 8); | |
1864 | ||
1865 | /* Fill in the entry in the global offset table. */ | |
1866 | bfd_put_32 (output_bfd, | |
1867 | (splt->output_section->vma | |
1868 | + splt->output_offset | |
1869 | + h->plt.offset) + addend, | |
1870 | sgot->contents + got_offset); | |
1871 | ||
1872 | /* Fill in the entry in the .rela.plt section. */ | |
1873 | rela.r_offset = (sgot->output_section->vma | |
1874 | + sgot->output_offset | |
1875 | + got_offset); | |
1876 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1877 | rela.r_addend = addend; | |
947216bf AM |
1878 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1879 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1880 | |
f5385ebf | 1881 | if (!h->def_regular) |
90ace9e9 JT |
1882 | { |
1883 | /* Mark the symbol as undefined, rather than as defined in | |
1884 | the .plt section. Leave the value alone. */ | |
1885 | sym->st_shndx = SHN_UNDEF; | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | if (h->got.offset != (bfd_vma) -1) | |
1890 | { | |
1891 | asection *sgot; | |
1892 | asection *srela; | |
1893 | Elf_Internal_Rela rela; | |
947216bf | 1894 | bfd_byte *loc; |
90ace9e9 JT |
1895 | |
1896 | /* This symbol has an entry in the global offset table. Set it | |
1897 | up. */ | |
90ace9e9 JT |
1898 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1899 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1900 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1901 | ||
1902 | rela.r_offset = (sgot->output_section->vma | |
1903 | + sgot->output_offset | |
1904 | + (h->got.offset &~ 1)); | |
1905 | ||
1906 | /* If the symbol was forced to be local because of a version file | |
1907 | locally we just want to emit a RELATIVE reloc. The entry in | |
1908 | the global offset table will already have been initialized in | |
1909 | the relocate_section function. */ | |
1910 | if (info->shared | |
1911 | && h->dynindx == -1 | |
f5385ebf | 1912 | && h->def_regular) |
90ace9e9 JT |
1913 | { |
1914 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1915 | } | |
1916 | else | |
1917 | { | |
1918 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1919 | } | |
1920 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1921 | (sgot->contents | |
1922 | + (h->got.offset & ~1))); | |
1923 | ||
947216bf AM |
1924 | loc = srela->contents; |
1925 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1926 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1927 | } |
1928 | ||
f5385ebf | 1929 | if (h->needs_copy) |
90ace9e9 JT |
1930 | { |
1931 | asection *s; | |
1932 | Elf_Internal_Rela rela; | |
947216bf | 1933 | bfd_byte *loc; |
90ace9e9 JT |
1934 | |
1935 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1936 | BFD_ASSERT (h->dynindx != -1 |
1937 | && (h->root.type == bfd_link_hash_defined | |
1938 | || h->root.type == bfd_link_hash_defweak)); | |
1939 | ||
1940 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1941 | ".rela.bss"); | |
1942 | BFD_ASSERT (s != NULL); | |
1943 | ||
1944 | rela.r_offset = (h->root.u.def.value | |
1945 | + h->root.u.def.section->output_section->vma | |
1946 | + h->root.u.def.section->output_offset); | |
1947 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1948 | rela.r_addend = 0; | |
947216bf AM |
1949 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1950 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1951 | } |
1952 | ||
1953 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1954 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 1955 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1956 | sym->st_shndx = SHN_ABS; |
1957 | ||
b34976b6 | 1958 | return TRUE; |
90ace9e9 JT |
1959 | } |
1960 | ||
1961 | /* Finish up the dynamic sections. */ | |
1962 | ||
b34976b6 | 1963 | static bfd_boolean |
ce71b576 | 1964 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1965 | { |
1966 | bfd *dynobj; | |
1967 | asection *sgot; | |
1968 | asection *sdyn; | |
1969 | ||
1970 | dynobj = elf_hash_table (info)->dynobj; | |
1971 | ||
1972 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1973 | BFD_ASSERT (sgot != NULL); | |
1974 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1975 | ||
1976 | if (elf_hash_table (info)->dynamic_sections_created) | |
1977 | { | |
1978 | asection *splt; | |
1979 | Elf32_External_Dyn *dyncon, *dynconend; | |
1980 | ||
1981 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1982 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1983 | ||
1984 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1985 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1986 | for (; dyncon < dynconend; dyncon++) |
1987 | { | |
1988 | Elf_Internal_Dyn dyn; | |
1989 | const char *name; | |
1990 | asection *s; | |
1991 | ||
1992 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1993 | ||
1994 | switch (dyn.d_tag) | |
1995 | { | |
1996 | default: | |
1997 | break; | |
1998 | ||
1999 | case DT_PLTGOT: | |
2000 | name = ".got"; | |
2001 | goto get_vma; | |
2002 | case DT_JMPREL: | |
2003 | name = ".rela.plt"; | |
2004 | get_vma: | |
2005 | s = bfd_get_section_by_name (output_bfd, name); | |
2006 | BFD_ASSERT (s != NULL); | |
2007 | dyn.d_un.d_ptr = s->vma; | |
2008 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2009 | break; | |
2010 | ||
2011 | case DT_PLTRELSZ: | |
2012 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2013 | BFD_ASSERT (s != NULL); | |
eea6121a | 2014 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2015 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2016 | break; | |
2017 | ||
2018 | case DT_RELASZ: | |
2019 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2020 | not be included in the overall relocs (DT_RELA). | |
2021 | Therefore, we override the DT_RELASZ entry here to | |
2022 | make it not include the JMPREL relocs. Since the | |
2023 | linker script arranges for .rela.plt to follow all | |
2024 | other relocation sections, we don't have to worry | |
2025 | about changing the DT_RELA entry. */ | |
2026 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2027 | if (s != NULL) | |
eea6121a | 2028 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2029 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2030 | break; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2035 | if (splt->size > 0) |
90ace9e9 JT |
2036 | { |
2037 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2038 | bfd_put_32 (output_bfd, | |
2039 | (sgot->output_section->vma | |
2040 | + sgot->output_offset + 4 | |
2041 | - (splt->output_section->vma + 6)), | |
2042 | splt->contents + 2); | |
2043 | bfd_put_32 (output_bfd, | |
2044 | (sgot->output_section->vma | |
2045 | + sgot->output_offset + 8 | |
2046 | - (splt->output_section->vma + 12)), | |
2047 | splt->contents + 8); | |
cedb70c5 | 2048 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2049 | = PLT_ENTRY_SIZE; |
2050 | } | |
2051 | } | |
2052 | ||
2053 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2054 | if (sgot->size > 0) |
90ace9e9 JT |
2055 | { |
2056 | if (sdyn == NULL) | |
2057 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2058 | else | |
2059 | bfd_put_32 (output_bfd, | |
2060 | sdyn->output_section->vma + sdyn->output_offset, | |
2061 | sgot->contents); | |
2062 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2063 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2064 | } | |
2065 | ||
2066 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2067 | ||
b34976b6 | 2068 | return TRUE; |
90ace9e9 JT |
2069 | } |
2070 | ||
2071 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec | |
2072 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2073 | #define ELF_MACHINE_CODE EM_VAX | |
2074 | #define ELF_MAXPAGESIZE 0x1000 | |
2075 | ||
2076 | #define elf_backend_create_dynamic_sections \ | |
2077 | _bfd_elf_create_dynamic_sections | |
2078 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2079 | elf_vax_link_hash_table_create | |
c152c796 | 2080 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2081 | |
2082 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2083 | #define elf_backend_adjust_dynamic_symbol \ | |
2084 | elf_vax_adjust_dynamic_symbol | |
2085 | #define elf_backend_size_dynamic_sections \ | |
2086 | elf_vax_size_dynamic_sections | |
74541ad4 | 2087 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
90ace9e9 JT |
2088 | #define elf_backend_relocate_section elf_vax_relocate_section |
2089 | #define elf_backend_finish_dynamic_symbol \ | |
2090 | elf_vax_finish_dynamic_symbol | |
2091 | #define elf_backend_finish_dynamic_sections \ | |
2092 | elf_vax_finish_dynamic_sections | |
2093 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook | |
2094 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2095 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2096 | elf32_vax_merge_private_bfd_data | |
2097 | #define bfd_elf32_bfd_set_private_flags \ | |
2098 | elf32_vax_set_private_flags | |
2099 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2100 | elf32_vax_print_private_bfd_data | |
2101 | ||
2102 | #define elf_backend_can_gc_sections 1 | |
2103 | #define elf_backend_want_got_plt 1 | |
2104 | #define elf_backend_plt_readonly 1 | |
2105 | #define elf_backend_want_plt_sym 0 | |
2106 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2107 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2108 | |
2109 | #include "elf32-target.h" |