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, |
4dfe6ac6 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 *); | |
6db7e006 MR |
50 | static bfd_vma elf_vax_plt_sym_val (bfd_vma, const asection *, |
51 | const arelent *); | |
ce71b576 NC |
52 | |
53 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
54 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
55 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, PTR); | |
90ace9e9 JT |
56 | |
57 | static reloc_howto_type howto_table[] = { | |
58 | HOWTO (R_VAX_NONE, /* type */ | |
59 | 0, /* rightshift */ | |
60 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
61 | 0, /* bitsize */ | |
b34976b6 | 62 | FALSE, /* pc_relative */ |
90ace9e9 JT |
63 | 0, /* bitpos */ |
64 | complain_overflow_dont, /* complain_on_overflow */ | |
65 | bfd_elf_generic_reloc, /* special_function */ | |
66 | "R_VAX_NONE", /* name */ | |
b34976b6 | 67 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
68 | 0, /* src_mask */ |
69 | 0x00000000, /* dst_mask */ | |
b34976b6 | 70 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
71 | |
72 | HOWTO (R_VAX_32, /* type */ | |
73 | 0, /* rightshift */ | |
74 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
75 | 32, /* bitsize */ | |
b34976b6 | 76 | FALSE, /* pc_relative */ |
90ace9e9 JT |
77 | 0, /* bitpos */ |
78 | complain_overflow_bitfield, /* complain_on_overflow */ | |
79 | bfd_elf_generic_reloc, /* special_function */ | |
80 | "R_VAX_32", /* name */ | |
b34976b6 | 81 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
82 | 0, /* src_mask */ |
83 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 84 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
85 | |
86 | HOWTO (R_VAX_16, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 16, /* bitsize */ | |
b34976b6 | 90 | FALSE, /* pc_relative */ |
90ace9e9 JT |
91 | 0, /* bitpos */ |
92 | complain_overflow_bitfield, /* complain_on_overflow */ | |
93 | bfd_elf_generic_reloc, /* special_function */ | |
94 | "R_VAX_16", /* name */ | |
b34976b6 | 95 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
96 | 0, /* src_mask */ |
97 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 98 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
99 | |
100 | HOWTO (R_VAX_8, /* type */ | |
101 | 0, /* rightshift */ | |
102 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
103 | 8, /* bitsize */ | |
b34976b6 | 104 | FALSE, /* pc_relative */ |
90ace9e9 JT |
105 | 0, /* bitpos */ |
106 | complain_overflow_bitfield, /* complain_on_overflow */ | |
107 | bfd_elf_generic_reloc, /* special_function */ | |
108 | "R_VAX_8", /* name */ | |
b34976b6 | 109 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
110 | 0, /* src_mask */ |
111 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 112 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
113 | |
114 | HOWTO (R_VAX_PC32, /* type */ | |
115 | 0, /* rightshift */ | |
116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
117 | 32, /* bitsize */ | |
b34976b6 | 118 | TRUE, /* pc_relative */ |
90ace9e9 JT |
119 | 0, /* bitpos */ |
120 | complain_overflow_bitfield, /* complain_on_overflow */ | |
121 | bfd_elf_generic_reloc, /* special_function */ | |
122 | "R_VAX_PC32", /* name */ | |
b34976b6 | 123 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
124 | 0, /* src_mask */ |
125 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 126 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
127 | |
128 | HOWTO (R_VAX_PC16, /* type */ | |
129 | 0, /* rightshift */ | |
130 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
131 | 16, /* bitsize */ | |
b34976b6 | 132 | TRUE, /* pc_relative */ |
90ace9e9 JT |
133 | 0, /* bitpos */ |
134 | complain_overflow_signed, /* complain_on_overflow */ | |
135 | bfd_elf_generic_reloc, /* special_function */ | |
136 | "R_VAX_PC16", /* name */ | |
b34976b6 | 137 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
138 | 0, /* src_mask */ |
139 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 140 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
141 | |
142 | HOWTO (R_VAX_PC8, /* type */ | |
143 | 0, /* rightshift */ | |
144 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
145 | 8, /* bitsize */ | |
b34976b6 | 146 | TRUE, /* pc_relative */ |
90ace9e9 JT |
147 | 0, /* bitpos */ |
148 | complain_overflow_signed, /* complain_on_overflow */ | |
149 | bfd_elf_generic_reloc, /* special_function */ | |
150 | "R_VAX_PC8", /* name */ | |
b34976b6 | 151 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
152 | 0, /* src_mask */ |
153 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 154 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
155 | |
156 | HOWTO (R_VAX_GOT32, /* type */ | |
157 | 0, /* rightshift */ | |
158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 32, /* bitsize */ | |
b34976b6 | 160 | TRUE, /* pc_relative */ |
90ace9e9 JT |
161 | 0, /* bitpos */ |
162 | complain_overflow_bitfield, /* complain_on_overflow */ | |
163 | bfd_elf_generic_reloc, /* special_function */ | |
164 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 165 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
166 | 0, /* src_mask */ |
167 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 168 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
169 | |
170 | EMPTY_HOWTO (-1), | |
171 | EMPTY_HOWTO (-1), | |
172 | EMPTY_HOWTO (-1), | |
173 | EMPTY_HOWTO (-1), | |
174 | EMPTY_HOWTO (-1), | |
175 | ||
176 | HOWTO (R_VAX_PLT32, /* type */ | |
177 | 0, /* rightshift */ | |
178 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
179 | 32, /* bitsize */ | |
b34976b6 | 180 | TRUE, /* pc_relative */ |
90ace9e9 JT |
181 | 0, /* bitpos */ |
182 | complain_overflow_bitfield, /* complain_on_overflow */ | |
183 | bfd_elf_generic_reloc, /* special_function */ | |
184 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 185 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
186 | 0, /* src_mask */ |
187 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 188 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
189 | |
190 | EMPTY_HOWTO (-1), | |
191 | EMPTY_HOWTO (-1), | |
192 | EMPTY_HOWTO (-1), | |
193 | EMPTY_HOWTO (-1), | |
194 | EMPTY_HOWTO (-1), | |
195 | ||
196 | HOWTO (R_VAX_COPY, /* type */ | |
197 | 0, /* rightshift */ | |
198 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
199 | 0, /* bitsize */ | |
b34976b6 | 200 | FALSE, /* pc_relative */ |
90ace9e9 JT |
201 | 0, /* bitpos */ |
202 | complain_overflow_dont, /* complain_on_overflow */ | |
203 | bfd_elf_generic_reloc, /* special_function */ | |
204 | "R_VAX_COPY", /* name */ | |
b34976b6 | 205 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
206 | 0, /* src_mask */ |
207 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 208 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
209 | |
210 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 32, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
90ace9e9 JT |
215 | 0, /* bitpos */ |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
217 | bfd_elf_generic_reloc, /* special_function */ | |
218 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
220 | 0, /* src_mask */ |
221 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
223 | |
224 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
225 | 0, /* rightshift */ | |
226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
227 | 32, /* bitsize */ | |
b34976b6 | 228 | FALSE, /* pc_relative */ |
90ace9e9 JT |
229 | 0, /* bitpos */ |
230 | complain_overflow_dont, /* complain_on_overflow */ | |
231 | bfd_elf_generic_reloc, /* special_function */ | |
232 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 233 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
234 | 0, /* src_mask */ |
235 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 236 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
237 | |
238 | HOWTO (R_VAX_RELATIVE, /* type */ | |
239 | 0, /* rightshift */ | |
240 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
241 | 32, /* bitsize */ | |
b34976b6 | 242 | FALSE, /* pc_relative */ |
90ace9e9 JT |
243 | 0, /* bitpos */ |
244 | complain_overflow_dont, /* complain_on_overflow */ | |
245 | bfd_elf_generic_reloc, /* special_function */ | |
246 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 247 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
248 | 0, /* src_mask */ |
249 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 250 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
251 | |
252 | /* GNU extension to record C++ vtable hierarchy */ | |
253 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
254 | 0, /* rightshift */ | |
255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
256 | 0, /* bitsize */ | |
b34976b6 | 257 | FALSE, /* pc_relative */ |
90ace9e9 JT |
258 | 0, /* bitpos */ |
259 | complain_overflow_dont, /* complain_on_overflow */ | |
260 | NULL, /* special_function */ | |
261 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 262 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
263 | 0, /* src_mask */ |
264 | 0, /* dst_mask */ | |
b34976b6 | 265 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
266 | |
267 | /* GNU extension to record C++ vtable member usage */ | |
268 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
269 | 0, /* rightshift */ | |
270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 0, /* bitsize */ | |
b34976b6 | 272 | FALSE, /* pc_relative */ |
90ace9e9 JT |
273 | 0, /* bitpos */ |
274 | complain_overflow_dont, /* complain_on_overflow */ | |
275 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
276 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 277 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
278 | 0, /* src_mask */ |
279 | 0, /* dst_mask */ | |
b34976b6 | 280 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
281 | }; |
282 | ||
283 | static void | |
ce71b576 NC |
284 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
285 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
286 | { |
287 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
288 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
289 | } | |
290 | ||
291 | #define elf_info_to_howto rtype_to_howto | |
292 | ||
293 | static const struct | |
294 | { | |
295 | bfd_reloc_code_real_type bfd_val; | |
296 | int elf_val; | |
297 | } reloc_map[] = { | |
298 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
299 | { BFD_RELOC_32, R_VAX_32 }, | |
300 | { BFD_RELOC_16, R_VAX_16 }, | |
301 | { BFD_RELOC_8, R_VAX_8 }, | |
302 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
303 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
304 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
305 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
306 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
307 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
308 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
309 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
310 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
311 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
312 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
313 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
314 | }; | |
315 | ||
316 | static reloc_howto_type * | |
ce71b576 | 317 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
318 | { |
319 | unsigned int i; | |
320 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
321 | { | |
322 | if (reloc_map[i].bfd_val == code) | |
323 | return &howto_table[reloc_map[i].elf_val]; | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
157090f7 AM |
328 | static reloc_howto_type * |
329 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
330 | const char *r_name) | |
331 | { | |
332 | unsigned int i; | |
333 | ||
334 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
335 | if (howto_table[i].name != NULL | |
336 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
337 | return &howto_table[i]; | |
338 | ||
339 | return NULL; | |
340 | } | |
341 | ||
90ace9e9 | 342 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 343 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
90ace9e9 JT |
344 | #define ELF_ARCH bfd_arch_vax |
345 | /* end code generated by elf.el */ | |
90ace9e9 JT |
346 | \f |
347 | /* Functions for the VAX ELF linker. */ | |
348 | ||
349 | /* The name of the dynamic interpreter. This is put in the .interp | |
350 | section. */ | |
351 | ||
352 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
353 | ||
354 | /* The size in bytes of an entry in the procedure linkage table. */ | |
355 | ||
356 | #define PLT_ENTRY_SIZE 12 | |
357 | ||
358 | /* The first entry in a procedure linkage table looks like this. See | |
359 | the SVR4 ABI VAX supplement to see how this works. */ | |
360 | ||
361 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
362 | { | |
363 | 0xdd, 0xef, /* pushl l^ */ | |
364 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
365 | 0x17, 0xff, /* jmp @L^(pc) */ | |
366 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
367 | }; | |
368 | ||
369 | /* Subsequent entries in a procedure linkage table look like this. */ | |
370 | ||
371 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
372 | { | |
6c4fb25a | 373 | 0xfc, 0x0f, /* .word ^M<r11:r2> */ |
71f136d6 | 374 | 0x16, 0xef, /* jsb L^(pc) */ |
90ace9e9 JT |
375 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ |
376 | 0, 0, 0, 0, /* index into .rela.plt */ | |
377 | }; | |
378 | ||
379 | /* The VAX linker needs to keep track of the number of relocs that it | |
380 | decides to copy in check_relocs for each symbol. This is so that it | |
381 | can discard PC relative relocs if it doesn't need them when linking | |
382 | with -Bsymbolic. We store the information in a field extending the | |
383 | regular ELF linker hash table. */ | |
384 | ||
385 | /* This structure keeps track of the number of PC relative relocs we have | |
386 | copied for a given symbol. */ | |
387 | ||
388 | struct elf_vax_pcrel_relocs_copied | |
389 | { | |
390 | /* Next section. */ | |
391 | struct elf_vax_pcrel_relocs_copied *next; | |
392 | /* A section in dynobj. */ | |
393 | asection *section; | |
394 | /* Number of relocs copied in this section. */ | |
395 | bfd_size_type count; | |
396 | }; | |
397 | ||
398 | /* VAX ELF linker hash entry. */ | |
399 | ||
400 | struct elf_vax_link_hash_entry | |
401 | { | |
402 | struct elf_link_hash_entry root; | |
403 | ||
404 | /* Number of PC relative relocs copied for this symbol. */ | |
405 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
406 | ||
407 | bfd_vma got_addend; | |
408 | }; | |
409 | ||
90ace9e9 JT |
410 | /* Declare this now that the above structures are defined. */ |
411 | ||
ce71b576 | 412 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
4dfe6ac6 | 413 | void *); |
90ace9e9 | 414 | |
b29635ba JT |
415 | /* Declare this now that the above structures are defined. */ |
416 | ||
ce71b576 | 417 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
4dfe6ac6 | 418 | void *); |
b29635ba | 419 | |
90ace9e9 JT |
420 | /* Traverse an VAX ELF linker hash table. */ |
421 | ||
422 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
423 | (elf_link_hash_traverse \ | |
4dfe6ac6 | 424 | ((table), \ |
ce71b576 | 425 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
90ace9e9 JT |
426 | (info))) |
427 | ||
90ace9e9 JT |
428 | /* Create an entry in an VAX ELF linker hash table. */ |
429 | ||
430 | static struct bfd_hash_entry * | |
ce71b576 NC |
431 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
432 | struct bfd_hash_table *table, | |
433 | const char *string) | |
90ace9e9 JT |
434 | { |
435 | struct elf_vax_link_hash_entry *ret = | |
436 | (struct elf_vax_link_hash_entry *) entry; | |
437 | ||
438 | /* Allocate the structure if it has not already been allocated by a | |
439 | subclass. */ | |
ce71b576 | 440 | if (ret == NULL) |
90ace9e9 JT |
441 | ret = ((struct elf_vax_link_hash_entry *) |
442 | bfd_hash_allocate (table, | |
443 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 444 | if (ret == NULL) |
90ace9e9 JT |
445 | return (struct bfd_hash_entry *) ret; |
446 | ||
447 | /* Call the allocation method of the superclass. */ | |
448 | ret = ((struct elf_vax_link_hash_entry *) | |
449 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
450 | table, string)); | |
ce71b576 | 451 | if (ret != NULL) |
90ace9e9 JT |
452 | { |
453 | ret->pcrel_relocs_copied = NULL; | |
454 | } | |
455 | ||
456 | return (struct bfd_hash_entry *) ret; | |
457 | } | |
458 | ||
459 | /* Create an VAX ELF linker hash table. */ | |
460 | ||
461 | static struct bfd_link_hash_table * | |
ce71b576 | 462 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 | 463 | { |
4dfe6ac6 NC |
464 | struct elf_link_hash_table *ret; |
465 | bfd_size_type amt = sizeof (struct elf_link_hash_table); | |
90ace9e9 | 466 | |
ce71b576 NC |
467 | ret = bfd_malloc (amt); |
468 | if (ret == NULL) | |
90ace9e9 JT |
469 | return NULL; |
470 | ||
4dfe6ac6 | 471 | if (!_bfd_elf_link_hash_table_init (ret, abfd, |
66eb6687 | 472 | elf_vax_link_hash_newfunc, |
4dfe6ac6 NC |
473 | sizeof (struct elf_vax_link_hash_entry), |
474 | GENERIC_ELF_DATA)) | |
90ace9e9 JT |
475 | { |
476 | free (ret); | |
477 | return NULL; | |
478 | } | |
479 | ||
4dfe6ac6 | 480 | return &ret->root; |
90ace9e9 JT |
481 | } |
482 | ||
483 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 484 | static bfd_boolean |
ce71b576 | 485 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
486 | { |
487 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
488 | elf_flags_init (abfd) = TRUE; |
489 | return TRUE; | |
90ace9e9 JT |
490 | } |
491 | ||
492 | /* Merge backend specific data from an object file to the output | |
493 | object file when linking. */ | |
b34976b6 | 494 | static bfd_boolean |
ce71b576 | 495 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 | 496 | { |
90ace9e9 JT |
497 | flagword in_flags; |
498 | ||
499 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
500 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 501 | return TRUE; |
90ace9e9 JT |
502 | |
503 | in_flags = elf_elfheader (ibfd)->e_flags; | |
90ace9e9 JT |
504 | |
505 | if (!elf_flags_init (obfd)) | |
506 | { | |
b34976b6 | 507 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
508 | elf_elfheader (obfd)->e_flags = in_flags; |
509 | } | |
510 | ||
b34976b6 | 511 | return TRUE; |
90ace9e9 JT |
512 | } |
513 | ||
514 | /* Display the flags field */ | |
b34976b6 | 515 | static bfd_boolean |
ce71b576 | 516 | elf32_vax_print_private_bfd_data (bfd *abfd, PTR ptr) |
90ace9e9 JT |
517 | { |
518 | FILE *file = (FILE *) ptr; | |
519 | ||
520 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
521 | ||
522 | /* Print normal ELF private data. */ | |
523 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
524 | ||
525 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
526 | ||
527 | /* xgettext:c-format */ | |
528 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
529 | ||
179d3252 | 530 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
531 | fprintf (file, _(" [nonpic]")); |
532 | ||
179d3252 | 533 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
534 | fprintf (file, _(" [d-float]")); |
535 | ||
179d3252 | 536 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
537 | fprintf (file, _(" [g-float]")); |
538 | ||
539 | fputc ('\n', file); | |
540 | ||
b34976b6 | 541 | return TRUE; |
90ace9e9 JT |
542 | } |
543 | /* Look through the relocs for a section during the first phase, and | |
544 | allocate space in the global offset table or procedure linkage | |
545 | table. */ | |
546 | ||
b34976b6 | 547 | static bfd_boolean |
ce71b576 NC |
548 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
549 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
550 | { |
551 | bfd *dynobj; | |
552 | Elf_Internal_Shdr *symtab_hdr; | |
553 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
554 | const Elf_Internal_Rela *rel; |
555 | const Elf_Internal_Rela *rel_end; | |
556 | asection *sgot; | |
557 | asection *srelgot; | |
558 | asection *sreloc; | |
559 | ||
1049f94e | 560 | if (info->relocatable) |
b34976b6 | 561 | return TRUE; |
90ace9e9 JT |
562 | |
563 | dynobj = elf_hash_table (info)->dynobj; | |
564 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
565 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
566 | |
567 | sgot = NULL; | |
568 | srelgot = NULL; | |
569 | sreloc = NULL; | |
570 | ||
571 | rel_end = relocs + sec->reloc_count; | |
572 | for (rel = relocs; rel < rel_end; rel++) | |
573 | { | |
574 | unsigned long r_symndx; | |
575 | struct elf_link_hash_entry *h; | |
576 | ||
577 | r_symndx = ELF32_R_SYM (rel->r_info); | |
578 | ||
579 | if (r_symndx < symtab_hdr->sh_info) | |
580 | h = NULL; | |
581 | else | |
973a3492 L |
582 | { |
583 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
584 | while (h->root.type == bfd_link_hash_indirect | |
585 | || h->root.type == bfd_link_hash_warning) | |
586 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
587 | } | |
90ace9e9 JT |
588 | |
589 | switch (ELF32_R_TYPE (rel->r_info)) | |
590 | { | |
591 | case R_VAX_GOT32: | |
fe723c87 MT |
592 | BFD_ASSERT (h != NULL); |
593 | if (h->forced_local | |
594 | || h == elf_hash_table (info)->hgot | |
595 | || h == elf_hash_table (info)->hplt) | |
90ace9e9 JT |
596 | break; |
597 | ||
7b6021f1 MR |
598 | /* If this is a local symbol, we resolve it directly without |
599 | creating a global offset table entry. */ | |
600 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
601 | break; | |
602 | ||
90ace9e9 JT |
603 | /* This symbol requires a global offset table entry. */ |
604 | ||
605 | if (dynobj == NULL) | |
606 | { | |
607 | /* Create the .got section. */ | |
608 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
609 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 610 | return FALSE; |
90ace9e9 JT |
611 | } |
612 | ||
613 | if (sgot == NULL) | |
614 | { | |
615 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
616 | BFD_ASSERT (sgot != NULL); | |
617 | } | |
618 | ||
619 | if (srelgot == NULL | |
620 | && (h != NULL || info->shared)) | |
621 | { | |
622 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
623 | if (srelgot == NULL) | |
624 | { | |
3496cb2a L |
625 | srelgot = bfd_make_section_with_flags (dynobj, |
626 | ".rela.got", | |
627 | (SEC_ALLOC | |
628 | | SEC_LOAD | |
629 | | SEC_HAS_CONTENTS | |
630 | | SEC_IN_MEMORY | |
631 | | SEC_LINKER_CREATED | |
632 | | SEC_READONLY)); | |
90ace9e9 | 633 | if (srelgot == NULL |
90ace9e9 | 634 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 635 | return FALSE; |
90ace9e9 JT |
636 | } |
637 | } | |
638 | ||
639 | if (h != NULL) | |
640 | { | |
641 | struct elf_vax_link_hash_entry *eh; | |
642 | ||
643 | eh = (struct elf_vax_link_hash_entry *) h; | |
644 | if (h->got.refcount == -1) | |
645 | { | |
646 | h->got.refcount = 1; | |
647 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
648 | } |
649 | else | |
650 | { | |
651 | h->got.refcount++; | |
652 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
653 | (*_bfd_error_handler) | |
fe723c87 MT |
654 | (_("%s: warning: GOT addend of %ld to `%s' does" |
655 | " not match previous GOT addend of %ld"), | |
656 | bfd_get_filename (abfd), rel->r_addend, | |
657 | h->root.root.string, | |
658 | eh->got_addend); | |
cedb70c5 | 659 | |
90ace9e9 JT |
660 | } |
661 | } | |
662 | break; | |
663 | ||
664 | case R_VAX_PLT32: | |
665 | /* This symbol requires a procedure linkage table entry. We | |
666 | actually build the entry in adjust_dynamic_symbol, | |
667 | because this might be a case of linking PIC code which is | |
668 | never referenced by a dynamic object, in which case we | |
669 | don't need to generate a procedure linkage table entry | |
670 | after all. */ | |
671 | ||
672 | /* If this is a local symbol, we resolve it directly without | |
673 | creating a procedure linkage table entry. */ | |
fe723c87 | 674 | BFD_ASSERT (h != NULL); |
7b6021f1 | 675 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT || h->forced_local) |
fe723c87 | 676 | break; |
90ace9e9 | 677 | |
f5385ebf | 678 | h->needs_plt = 1; |
90ace9e9 JT |
679 | if (h->plt.refcount == -1) |
680 | h->plt.refcount = 1; | |
681 | else | |
682 | h->plt.refcount++; | |
683 | break; | |
684 | ||
685 | case R_VAX_PC8: | |
686 | case R_VAX_PC16: | |
687 | case R_VAX_PC32: | |
688 | /* If we are creating a shared library and this is not a local | |
689 | symbol, we need to copy the reloc into the shared library. | |
690 | However when linking with -Bsymbolic and this is a global | |
691 | symbol which is defined in an object we are including in the | |
692 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
693 | reloc directly. At this point we have not seen all the input | |
694 | files, so it is possible that DEF_REGULAR is not set now but | |
695 | will be set later (it is never cleared). We account for that | |
696 | possibility below by storing information in the | |
697 | pcrel_relocs_copied field of the hash table entry. */ | |
698 | if (!(info->shared | |
699 | && (sec->flags & SEC_ALLOC) != 0 | |
700 | && h != NULL | |
701 | && (!info->symbolic | |
f5385ebf | 702 | || !h->def_regular))) |
90ace9e9 | 703 | { |
7b6021f1 MR |
704 | if (h != NULL |
705 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
706 | && !h->forced_local) | |
90ace9e9 JT |
707 | { |
708 | /* Make sure a plt entry is created for this symbol if | |
709 | it turns out to be a function defined by a dynamic | |
710 | object. */ | |
711 | if (h->plt.refcount == -1) | |
712 | h->plt.refcount = 1; | |
713 | else | |
714 | h->plt.refcount++; | |
715 | } | |
716 | break; | |
717 | } | |
7b6021f1 MR |
718 | /* If this is a local symbol, we can resolve it directly. */ |
719 | if (h != NULL | |
720 | && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
721 | || h->forced_local)) | |
fe723c87 MT |
722 | break; |
723 | ||
90ace9e9 JT |
724 | /* Fall through. */ |
725 | case R_VAX_8: | |
726 | case R_VAX_16: | |
727 | case R_VAX_32: | |
7b6021f1 | 728 | if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
90ace9e9 JT |
729 | { |
730 | /* Make sure a plt entry is created for this symbol if it | |
731 | turns out to be a function defined by a dynamic object. */ | |
732 | if (h->plt.refcount == -1) | |
733 | h->plt.refcount = 1; | |
734 | else | |
735 | h->plt.refcount++; | |
736 | } | |
737 | ||
738 | /* If we are creating a shared library, we need to copy the | |
739 | reloc into the shared library. */ | |
740 | if (info->shared | |
741 | && (sec->flags & SEC_ALLOC) != 0) | |
742 | { | |
743 | /* When creating a shared object, we must copy these | |
744 | reloc types into the output file. We create a reloc | |
745 | section in dynobj and make room for this reloc. */ | |
746 | if (sreloc == NULL) | |
747 | { | |
83bac4b0 NC |
748 | sreloc = _bfd_elf_make_dynamic_reloc_section |
749 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
90ace9e9 | 750 | |
83bac4b0 | 751 | if (sreloc == NULL) |
b34976b6 | 752 | return FALSE; |
90ace9e9 | 753 | |
90ace9e9 JT |
754 | if (sec->flags & SEC_READONLY) |
755 | info->flags |= DF_TEXTREL; | |
756 | } | |
757 | ||
eea6121a | 758 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
759 | |
760 | /* If we are linking with -Bsymbolic, we count the number of | |
761 | PC relative relocations we have entered for this symbol, | |
762 | so that we can discard them again if the symbol is later | |
763 | defined by a regular object. Note that this function is | |
19852a2a | 764 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
765 | which means that h is really a pointer to an |
766 | elf_vax_link_hash_entry. */ | |
767 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
768 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
769 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
770 | && info->symbolic) |
771 | { | |
772 | struct elf_vax_link_hash_entry *eh; | |
773 | struct elf_vax_pcrel_relocs_copied *p; | |
774 | ||
775 | eh = (struct elf_vax_link_hash_entry *) h; | |
776 | ||
777 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
778 | if (p->section == sreloc) | |
779 | break; | |
780 | ||
781 | if (p == NULL) | |
782 | { | |
783 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
784 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
785 | if (p == NULL) | |
b34976b6 | 786 | return FALSE; |
90ace9e9 JT |
787 | p->next = eh->pcrel_relocs_copied; |
788 | eh->pcrel_relocs_copied = p; | |
789 | p->section = sreloc; | |
790 | p->count = 0; | |
791 | } | |
792 | ||
793 | ++p->count; | |
794 | } | |
795 | } | |
796 | ||
797 | break; | |
798 | ||
799 | /* This relocation describes the C++ object vtable hierarchy. | |
800 | Reconstruct it for later use during GC. */ | |
801 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 802 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 803 | return FALSE; |
90ace9e9 JT |
804 | break; |
805 | ||
806 | /* This relocation describes which C++ vtable entries are actually | |
807 | used. Record for later use during GC. */ | |
808 | case R_VAX_GNU_VTENTRY: | |
d17e0c6e JB |
809 | BFD_ASSERT (h != NULL); |
810 | if (h != NULL | |
811 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 812 | return FALSE; |
90ace9e9 JT |
813 | break; |
814 | ||
815 | default: | |
816 | break; | |
817 | } | |
818 | } | |
819 | ||
b34976b6 | 820 | return TRUE; |
90ace9e9 JT |
821 | } |
822 | ||
823 | /* Return the section that should be marked against GC for a given | |
824 | relocation. */ | |
825 | ||
826 | static asection * | |
ce71b576 | 827 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 828 | struct bfd_link_info *info, |
ce71b576 NC |
829 | Elf_Internal_Rela *rel, |
830 | struct elf_link_hash_entry *h, | |
831 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
832 | { |
833 | if (h != NULL) | |
07adf181 AM |
834 | switch (ELF32_R_TYPE (rel->r_info)) |
835 | { | |
836 | case R_VAX_GNU_VTINHERIT: | |
837 | case R_VAX_GNU_VTENTRY: | |
838 | return NULL; | |
839 | } | |
840 | ||
841 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
842 | } |
843 | ||
844 | /* Update the got entry reference counts for the section being removed. */ | |
845 | ||
b34976b6 | 846 | static bfd_boolean |
ce71b576 NC |
847 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
848 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
849 | { |
850 | Elf_Internal_Shdr *symtab_hdr; | |
851 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 852 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 853 | bfd *dynobj; |
90ace9e9 | 854 | |
7dda2462 TG |
855 | if (info->relocatable) |
856 | return TRUE; | |
857 | ||
90ace9e9 JT |
858 | dynobj = elf_hash_table (info)->dynobj; |
859 | if (dynobj == NULL) | |
b34976b6 | 860 | return TRUE; |
90ace9e9 | 861 | |
babfd660 KH |
862 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
863 | sym_hashes = elf_sym_hashes (abfd); | |
864 | ||
90ace9e9 JT |
865 | relend = relocs + sec->reloc_count; |
866 | for (rel = relocs; rel < relend; rel++) | |
867 | { | |
babfd660 | 868 | unsigned long r_symndx; |
3eb128b2 AM |
869 | struct elf_link_hash_entry *h = NULL; |
870 | ||
871 | r_symndx = ELF32_R_SYM (rel->r_info); | |
872 | if (r_symndx >= symtab_hdr->sh_info) | |
873 | { | |
874 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
875 | while (h->root.type == bfd_link_hash_indirect | |
876 | || h->root.type == bfd_link_hash_warning) | |
877 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
878 | } | |
babfd660 | 879 | |
90ace9e9 JT |
880 | switch (ELF32_R_TYPE (rel->r_info)) |
881 | { | |
882 | case R_VAX_GOT32: | |
3eb128b2 AM |
883 | if (h != NULL && h->got.refcount > 0) |
884 | --h->got.refcount; | |
90ace9e9 JT |
885 | break; |
886 | ||
887 | case R_VAX_PLT32: | |
888 | case R_VAX_PC8: | |
889 | case R_VAX_PC16: | |
890 | case R_VAX_PC32: | |
891 | case R_VAX_8: | |
892 | case R_VAX_16: | |
893 | case R_VAX_32: | |
3eb128b2 AM |
894 | if (h != NULL && h->plt.refcount > 0) |
895 | --h->plt.refcount; | |
90ace9e9 JT |
896 | break; |
897 | ||
898 | default: | |
899 | break; | |
900 | } | |
901 | } | |
902 | ||
b34976b6 | 903 | return TRUE; |
90ace9e9 JT |
904 | } |
905 | ||
906 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
907 | regular object. The current definition is in some section of the | |
908 | dynamic object, but we're not including those sections. We have to | |
909 | change the definition to something the rest of the link can | |
910 | understand. */ | |
911 | ||
b34976b6 | 912 | static bfd_boolean |
90ace9e9 JT |
913 | elf_vax_adjust_dynamic_symbol (info, h) |
914 | struct bfd_link_info *info; | |
915 | struct elf_link_hash_entry *h; | |
916 | { | |
917 | bfd *dynobj; | |
918 | asection *s; | |
90ace9e9 JT |
919 | |
920 | dynobj = elf_hash_table (info)->dynobj; | |
921 | ||
922 | /* Make sure we know what is going on here. */ | |
923 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 924 | && (h->needs_plt |
f6e332e6 | 925 | || h->u.weakdef != NULL |
f5385ebf AM |
926 | || (h->def_dynamic |
927 | && h->ref_regular | |
928 | && !h->def_regular))); | |
90ace9e9 JT |
929 | |
930 | /* If this is a function, put it in the procedure linkage table. We | |
931 | will fill in the contents of the procedure linkage table later, | |
932 | when we know the address of the .got section. */ | |
933 | if (h->type == STT_FUNC | |
f5385ebf | 934 | || h->needs_plt) |
90ace9e9 JT |
935 | { |
936 | if (! info->shared | |
f5385ebf AM |
937 | && !h->def_dynamic |
938 | && !h->ref_dynamic | |
90ace9e9 JT |
939 | /* We must always create the plt entry if it was referenced |
940 | by a PLTxxO relocation. In this case we already recorded | |
941 | it as a dynamic symbol. */ | |
942 | && h->dynindx == -1) | |
943 | { | |
944 | /* This case can occur if we saw a PLTxx reloc in an input | |
945 | file, but the symbol was never referred to by a dynamic | |
946 | object. In such a case, we don't actually need to build | |
947 | a procedure linkage table, and we can just do a PCxx | |
948 | reloc instead. */ | |
f5385ebf | 949 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 950 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 951 | return TRUE; |
90ace9e9 JT |
952 | } |
953 | ||
954 | /* GC may have rendered this entry unused. */ | |
955 | if (h->plt.refcount <= 0) | |
956 | { | |
f5385ebf | 957 | h->needs_plt = 0; |
90ace9e9 | 958 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 959 | return TRUE; |
90ace9e9 JT |
960 | } |
961 | ||
962 | /* Make sure this symbol is output as a dynamic symbol. */ | |
963 | if (h->dynindx == -1) | |
964 | { | |
c152c796 | 965 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 966 | return FALSE; |
90ace9e9 JT |
967 | } |
968 | ||
969 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
970 | BFD_ASSERT (s != NULL); | |
971 | ||
972 | /* If this is the first .plt entry, make room for the special | |
973 | first entry. */ | |
eea6121a | 974 | if (s->size == 0) |
90ace9e9 | 975 | { |
eea6121a | 976 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
977 | } |
978 | ||
979 | /* If this symbol is not defined in a regular file, and we are | |
980 | not generating a shared library, then set the symbol to this | |
981 | location in the .plt. This is required to make function | |
982 | pointers compare as equal between the normal executable and | |
983 | the shared library. */ | |
984 | if (!info->shared | |
f5385ebf | 985 | && !h->def_regular) |
90ace9e9 JT |
986 | { |
987 | h->root.u.def.section = s; | |
eea6121a | 988 | h->root.u.def.value = s->size; |
90ace9e9 JT |
989 | } |
990 | ||
eea6121a | 991 | h->plt.offset = s->size; |
90ace9e9 JT |
992 | |
993 | /* Make room for this entry. */ | |
eea6121a | 994 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
995 | |
996 | /* We also need to make an entry in the .got.plt section, which | |
997 | will be placed in the .got section by the linker script. */ | |
998 | ||
999 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1000 | BFD_ASSERT (s != NULL); | |
eea6121a | 1001 | s->size += 4; |
90ace9e9 JT |
1002 | |
1003 | /* We also need to make an entry in the .rela.plt section. */ | |
1004 | ||
1005 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1006 | BFD_ASSERT (s != NULL); | |
eea6121a | 1007 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1008 | |
b34976b6 | 1009 | return TRUE; |
90ace9e9 JT |
1010 | } |
1011 | ||
1012 | /* Reinitialize the plt offset now that it is not used as a reference | |
1013 | count any more. */ | |
1014 | h->plt.offset = (bfd_vma) -1; | |
1015 | ||
1016 | /* If this is a weak symbol, and there is a real definition, the | |
1017 | processor independent code will have arranged for us to see the | |
1018 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1019 | if (h->u.weakdef != NULL) |
90ace9e9 | 1020 | { |
f6e332e6 AM |
1021 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1022 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1023 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1024 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1025 | return TRUE; |
90ace9e9 JT |
1026 | } |
1027 | ||
1028 | /* This is a reference to a symbol defined by a dynamic object which | |
1029 | is not a function. */ | |
1030 | ||
1031 | /* If we are creating a shared library, we must presume that the | |
1032 | only references to the symbol are via the global offset table. | |
1033 | For such cases we need not do anything here; the relocations will | |
1034 | be handled correctly by relocate_section. */ | |
1035 | if (info->shared) | |
b34976b6 | 1036 | return TRUE; |
90ace9e9 | 1037 | |
909272ee AM |
1038 | if (h->size == 0) |
1039 | { | |
1040 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1041 | h->root.root.string); | |
1042 | return TRUE; | |
1043 | } | |
1044 | ||
90ace9e9 JT |
1045 | /* We must allocate the symbol in our .dynbss section, which will |
1046 | become part of the .bss section of the executable. There will be | |
1047 | an entry for this symbol in the .dynsym section. The dynamic | |
1048 | object will contain position independent code, so all references | |
1049 | from the dynamic object to this symbol will go through the global | |
1050 | offset table. The dynamic linker will use the .dynsym entry to | |
1051 | determine the address it must put in the global offset table, so | |
1052 | both the dynamic object and the regular object will refer to the | |
1053 | same memory location for the variable. */ | |
1054 | ||
1055 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1056 | BFD_ASSERT (s != NULL); | |
1057 | ||
1058 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1059 | copy the initial value out of the dynamic object and into the | |
1060 | runtime process image. We need to remember the offset into the | |
1061 | .rela.bss section we are going to use. */ | |
1062 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1063 | { | |
1064 | asection *srel; | |
1065 | ||
1066 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1067 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1068 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1069 | h->needs_copy = 1; |
90ace9e9 JT |
1070 | } |
1071 | ||
027297b7 | 1072 | return _bfd_elf_adjust_dynamic_copy (h, s); |
90ace9e9 JT |
1073 | } |
1074 | ||
1075 | /* Set the sizes of the dynamic sections. */ | |
1076 | ||
b34976b6 | 1077 | static bfd_boolean |
ce71b576 | 1078 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1079 | { |
1080 | bfd *dynobj; | |
1081 | asection *s; | |
b34976b6 AM |
1082 | bfd_boolean plt; |
1083 | bfd_boolean relocs; | |
1084 | bfd_boolean reltext; | |
90ace9e9 JT |
1085 | |
1086 | dynobj = elf_hash_table (info)->dynobj; | |
1087 | BFD_ASSERT (dynobj != NULL); | |
1088 | ||
1089 | if (elf_hash_table (info)->dynamic_sections_created) | |
1090 | { | |
1091 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1092 | if (info->executable) |
90ace9e9 JT |
1093 | { |
1094 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1095 | BFD_ASSERT (s != NULL); | |
eea6121a | 1096 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1097 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1098 | } | |
1099 | } | |
1100 | else | |
1101 | { | |
1102 | /* We may have created entries in the .rela.got and .got sections. | |
1103 | However, if we are not creating the dynamic sections, we will | |
1104 | not actually use these entries. Reset the size of .rela.got | |
1105 | and .got, which will cause it to get stripped from the output | |
1106 | file below. */ | |
1107 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1108 | if (s != NULL) | |
eea6121a | 1109 | s->size = 0; |
90ace9e9 JT |
1110 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1111 | if (s != NULL) | |
eea6121a | 1112 | s->size = 0; |
90ace9e9 JT |
1113 | s = bfd_get_section_by_name (dynobj, ".got"); |
1114 | if (s != NULL) | |
eea6121a | 1115 | s->size = 0; |
90ace9e9 JT |
1116 | } |
1117 | ||
1118 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1119 | relative relocs against symbols defined in a regular object. We | |
1120 | allocated space for them in the check_relocs routine, but we will not | |
1121 | fill them in in the relocate_section routine. */ | |
1122 | if (info->shared && info->symbolic) | |
4dfe6ac6 | 1123 | elf_vax_link_hash_traverse (elf_hash_table (info), |
b29635ba | 1124 | elf_vax_discard_copies, |
ce71b576 | 1125 | NULL); |
b29635ba | 1126 | |
b34976b6 | 1127 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1128 | discard all the got entries we've recorded. Otherwise, we need to |
1129 | instantiate (allocate space for them). */ | |
1130 | elf_link_hash_traverse (elf_hash_table (info), | |
1131 | elf_vax_instantiate_got_entries, | |
1132 | (PTR) info); | |
90ace9e9 JT |
1133 | |
1134 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1135 | determined the sizes of the various dynamic sections. Allocate | |
1136 | memory for them. */ | |
b34976b6 AM |
1137 | plt = FALSE; |
1138 | relocs = FALSE; | |
1139 | reltext = FALSE; | |
90ace9e9 JT |
1140 | for (s = dynobj->sections; s != NULL; s = s->next) |
1141 | { | |
1142 | const char *name; | |
90ace9e9 JT |
1143 | |
1144 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1145 | continue; | |
1146 | ||
1147 | /* It's OK to base decisions on the section name, because none | |
1148 | of the dynobj section names depend upon the input files. */ | |
1149 | name = bfd_get_section_name (dynobj, s); | |
1150 | ||
90ace9e9 JT |
1151 | if (strcmp (name, ".plt") == 0) |
1152 | { | |
c456f082 AM |
1153 | /* Remember whether there is a PLT. */ |
1154 | plt = s->size != 0; | |
90ace9e9 | 1155 | } |
0112cd26 | 1156 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1157 | { |
c456f082 | 1158 | if (s->size != 0) |
90ace9e9 JT |
1159 | { |
1160 | asection *target; | |
1161 | ||
1162 | /* Remember whether there are any reloc sections other | |
1163 | than .rela.plt. */ | |
1164 | if (strcmp (name, ".rela.plt") != 0) | |
1165 | { | |
1166 | const char *outname; | |
1167 | ||
b34976b6 | 1168 | relocs = TRUE; |
90ace9e9 JT |
1169 | |
1170 | /* If this relocation section applies to a read only | |
1171 | section, then we probably need a DT_TEXTREL | |
1172 | entry. .rela.plt is actually associated with | |
1173 | .got.plt, which is never readonly. */ | |
1174 | outname = bfd_get_section_name (output_bfd, | |
1175 | s->output_section); | |
1176 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1177 | if (target != NULL | |
1178 | && (target->flags & SEC_READONLY) != 0 | |
1179 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1180 | reltext = TRUE; |
90ace9e9 JT |
1181 | } |
1182 | ||
1183 | /* We use the reloc_count field as a counter if we need | |
1184 | to copy relocs into the output file. */ | |
1185 | s->reloc_count = 0; | |
1186 | } | |
1187 | } | |
0112cd26 | 1188 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1189 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1190 | { |
1191 | /* It's not one of our sections, so don't allocate space. */ | |
1192 | continue; | |
1193 | } | |
1194 | ||
c456f082 | 1195 | if (s->size == 0) |
90ace9e9 | 1196 | { |
c456f082 AM |
1197 | /* If we don't need this section, strip it from the |
1198 | output file. This is mostly to handle .rela.bss and | |
1199 | .rela.plt. We must create both sections in | |
1200 | create_dynamic_sections, because they must be created | |
1201 | before the linker maps input sections to output | |
1202 | sections. The linker does that before | |
1203 | adjust_dynamic_symbol is called, and it is that | |
1204 | function which decides whether anything needs to go | |
1205 | into these sections. */ | |
8423293d | 1206 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1207 | continue; |
1208 | } | |
1209 | ||
c456f082 AM |
1210 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1211 | continue; | |
1212 | ||
90ace9e9 | 1213 | /* Allocate memory for the section contents. */ |
eea6121a | 1214 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1215 | if (s->contents == NULL) |
b34976b6 | 1216 | return FALSE; |
90ace9e9 JT |
1217 | } |
1218 | ||
1219 | if (elf_hash_table (info)->dynamic_sections_created) | |
1220 | { | |
1221 | /* Add some entries to the .dynamic section. We fill in the | |
1222 | values later, in elf_vax_finish_dynamic_sections, but we | |
1223 | must add the entries now so that we get the correct size for | |
1224 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1225 | dynamic linker and used by the debugger. */ | |
1226 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1227 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1228 | |
1229 | if (!info->shared) | |
1230 | { | |
1231 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1232 | return FALSE; |
90ace9e9 JT |
1233 | } |
1234 | ||
1235 | if (plt) | |
1236 | { | |
1237 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1238 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1239 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1240 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1241 | return FALSE; |
90ace9e9 JT |
1242 | } |
1243 | ||
1244 | if (relocs) | |
1245 | { | |
1246 | if (!add_dynamic_entry (DT_RELA, 0) | |
1247 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1248 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1249 | return FALSE; |
90ace9e9 JT |
1250 | } |
1251 | ||
1252 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1253 | { | |
1254 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1255 | return FALSE; |
90ace9e9 JT |
1256 | } |
1257 | } | |
1258 | #undef add_dynamic_entry | |
1259 | ||
b34976b6 | 1260 | return TRUE; |
90ace9e9 JT |
1261 | } |
1262 | ||
1263 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1264 | creating a shared object with -Bsymbolic. It discards the space | |
1265 | allocated to copy PC relative relocs against symbols which are defined | |
1266 | in regular objects. We allocated space for them in the check_relocs | |
1267 | routine, but we won't fill them in in the relocate_section routine. */ | |
1268 | ||
b34976b6 | 1269 | static bfd_boolean |
ce71b576 NC |
1270 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
1271 | PTR ignore ATTRIBUTE_UNUSED) | |
90ace9e9 JT |
1272 | { |
1273 | struct elf_vax_pcrel_relocs_copied *s; | |
1274 | ||
1275 | if (h->root.root.type == bfd_link_hash_warning) | |
1276 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1277 | ||
1278 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1279 | if (!h->root.def_regular) |
b34976b6 | 1280 | return TRUE; |
90ace9e9 JT |
1281 | |
1282 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1283 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1284 | |
b34976b6 | 1285 | return TRUE; |
90ace9e9 JT |
1286 | } |
1287 | ||
b29635ba JT |
1288 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1289 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1290 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1291 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1292 | creating a shared object or executable, space in the .got and .rela.got | |
1293 | will be reserved for the symbol. */ | |
1294 | ||
b34976b6 | 1295 | static bfd_boolean |
ce71b576 | 1296 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, PTR infoptr) |
b29635ba JT |
1297 | { |
1298 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1299 | bfd *dynobj; | |
1300 | asection *sgot; | |
1301 | asection *srelgot; | |
b34976b6 | 1302 | |
b29635ba JT |
1303 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1304 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1305 | return TRUE; |
b29635ba JT |
1306 | |
1307 | dynobj = elf_hash_table (info)->dynobj; | |
1308 | if (dynobj == NULL) | |
b34976b6 | 1309 | return TRUE; |
b29635ba JT |
1310 | |
1311 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1312 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1313 | ||
1314 | if (!elf_hash_table (info)->dynamic_sections_created | |
fe723c87 MT |
1315 | || (info->shared && info->symbolic) |
1316 | || h->forced_local) | |
b29635ba JT |
1317 | { |
1318 | h->got.refcount = 0; | |
1319 | h->got.offset = (bfd_vma) -1; | |
1320 | h->plt.refcount = 0; | |
1321 | h->plt.offset = (bfd_vma) -1; | |
1322 | } | |
1323 | else if (h->got.refcount > 0) | |
1324 | { | |
886815b2 MR |
1325 | bfd_boolean dyn; |
1326 | ||
b29635ba JT |
1327 | /* Make sure this symbol is output as a dynamic symbol. */ |
1328 | if (h->dynindx == -1) | |
1329 | { | |
c152c796 | 1330 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1331 | return FALSE; |
b29635ba JT |
1332 | } |
1333 | ||
886815b2 | 1334 | dyn = elf_hash_table (info)->dynamic_sections_created; |
b29635ba | 1335 | /* Allocate space in the .got and .rela.got sections. */ |
886815b2 MR |
1336 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1337 | && (info->shared | |
1338 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
1339 | { | |
1340 | sgot->size += 4; | |
1341 | srelgot->size += sizeof (Elf32_External_Rela); | |
1342 | } | |
b29635ba JT |
1343 | } |
1344 | ||
b34976b6 | 1345 | return TRUE; |
b29635ba JT |
1346 | } |
1347 | ||
90ace9e9 JT |
1348 | /* Relocate an VAX ELF section. */ |
1349 | ||
b34976b6 | 1350 | static bfd_boolean |
ce71b576 NC |
1351 | elf_vax_relocate_section (bfd *output_bfd, |
1352 | struct bfd_link_info *info, | |
1353 | bfd *input_bfd, | |
1354 | asection *input_section, | |
1355 | bfd_byte *contents, | |
1356 | Elf_Internal_Rela *relocs, | |
1357 | Elf_Internal_Sym *local_syms, | |
1358 | asection **local_sections) | |
90ace9e9 JT |
1359 | { |
1360 | bfd *dynobj; | |
1361 | Elf_Internal_Shdr *symtab_hdr; | |
1362 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
1363 | bfd_vma plt_index; |
1364 | bfd_vma got_offset; | |
1365 | asection *sgot; | |
1366 | asection *splt; | |
1367 | asection *sgotplt; | |
1368 | asection *sreloc; | |
1369 | Elf_Internal_Rela *rel; | |
1370 | Elf_Internal_Rela *relend; | |
1371 | ||
1372 | dynobj = elf_hash_table (info)->dynobj; | |
1373 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1374 | sym_hashes = elf_sym_hashes (input_bfd); | |
90ace9e9 JT |
1375 | |
1376 | sgot = NULL; | |
1377 | splt = NULL; | |
1378 | sgotplt = NULL; | |
1379 | sreloc = NULL; | |
1380 | ||
1381 | rel = relocs; | |
1382 | relend = relocs + input_section->reloc_count; | |
1383 | for (; rel < relend; rel++) | |
1384 | { | |
1385 | int r_type; | |
1386 | reloc_howto_type *howto; | |
1387 | unsigned long r_symndx; | |
1388 | struct elf_link_hash_entry *h; | |
1389 | Elf_Internal_Sym *sym; | |
1390 | asection *sec; | |
1391 | bfd_vma relocation; | |
1392 | bfd_reloc_status_type r; | |
1393 | ||
1394 | r_type = ELF32_R_TYPE (rel->r_info); | |
1395 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1396 | { | |
1397 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1398 | return FALSE; |
90ace9e9 JT |
1399 | } |
1400 | howto = howto_table + r_type; | |
1401 | ||
f0fe0e16 | 1402 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1403 | h = NULL; |
1404 | sym = NULL; | |
1405 | sec = NULL; | |
1406 | if (r_symndx < symtab_hdr->sh_info) | |
1407 | { | |
1408 | sym = local_syms + r_symndx; | |
1409 | sec = local_sections[r_symndx]; | |
8517fae7 | 1410 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1411 | } |
1412 | else | |
1413 | { | |
560e09e9 NC |
1414 | bfd_boolean unresolved_reloc; |
1415 | bfd_boolean warned; | |
1416 | ||
b2a8e766 AM |
1417 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1418 | r_symndx, symtab_hdr, sym_hashes, | |
1419 | h, sec, relocation, | |
1420 | unresolved_reloc, warned); | |
ce71b576 | 1421 | |
560e09e9 | 1422 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1423 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1424 | && ((r_type == R_VAX_PLT32 |
90ace9e9 | 1425 | && h->plt.offset != (bfd_vma) -1 |
fe723c87 | 1426 | && !h->forced_local |
90ace9e9 JT |
1427 | && elf_hash_table (info)->dynamic_sections_created) |
1428 | || (r_type == R_VAX_GOT32 | |
fe723c87 MT |
1429 | && h->got.offset != (bfd_vma) -1 |
1430 | && !h->forced_local | |
90ace9e9 JT |
1431 | && elf_hash_table (info)->dynamic_sections_created |
1432 | && (! info->shared | |
1433 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1434 | || !h->def_regular)) |
90ace9e9 JT |
1435 | || (info->shared |
1436 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1437 | || !h->def_regular) |
90ace9e9 JT |
1438 | && ((input_section->flags & SEC_ALLOC) != 0 |
1439 | /* DWARF will emit R_VAX_32 relocations in its | |
1440 | sections against symbols defined externally | |
1441 | in shared libraries. We can't do anything | |
1442 | with them here. */ | |
1443 | ||
1444 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1445 | && h->def_dynamic)) |
90ace9e9 JT |
1446 | && (r_type == R_VAX_8 |
1447 | || r_type == R_VAX_16 | |
fe723c87 | 1448 | || r_type == R_VAX_32)))) |
560e09e9 NC |
1449 | /* In these cases, we don't need the relocation |
1450 | value. We check specially because in some | |
1451 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1452 | relocation = 0; |
90ace9e9 JT |
1453 | } |
1454 | ||
ab96bf03 | 1455 | if (sec != NULL && elf_discarded_section (sec)) |
e4067dbb DJ |
1456 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
1457 | rel, relend, howto, contents); | |
ab96bf03 AM |
1458 | |
1459 | if (info->relocatable) | |
1460 | continue; | |
1461 | ||
90ace9e9 JT |
1462 | switch (r_type) |
1463 | { | |
1464 | case R_VAX_GOT32: | |
1465 | /* Relocation is to the address of the entry for this symbol | |
1466 | in the global offset table. */ | |
7b6021f1 MR |
1467 | if (h == NULL |
1468 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1469 | || h->got.offset == (bfd_vma) -1 | |
1470 | || h->forced_local) | |
90ace9e9 JT |
1471 | break; |
1472 | ||
1473 | /* Relocation is the offset of the entry for this symbol in | |
1474 | the global offset table. */ | |
1475 | ||
1476 | { | |
886815b2 | 1477 | bfd_boolean dyn; |
90ace9e9 JT |
1478 | bfd_vma off; |
1479 | ||
90ace9e9 JT |
1480 | if (sgot == NULL) |
1481 | { | |
1482 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1483 | BFD_ASSERT (sgot != NULL); | |
1484 | } | |
1485 | ||
1486 | BFD_ASSERT (h != NULL); | |
1487 | off = h->got.offset; | |
1488 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1489 | BFD_ASSERT (off < sgot->size); |
90ace9e9 | 1490 | |
886815b2 MR |
1491 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1492 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
1493 | || (info->shared | |
1494 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
90ace9e9 JT |
1495 | { |
1496 | /* The symbol was forced to be local | |
1497 | because of a version file.. We must initialize | |
1498 | this entry in the global offset table. Since | |
1499 | the offset must always be a multiple of 4, we | |
1500 | use the least significant bit to record whether | |
1501 | we have initialized it already. | |
1502 | ||
1503 | When doing a dynamic link, we create a .rela.got | |
1504 | relocation entry to initialize the value. This | |
1505 | is done in the finish_dynamic_symbol routine. */ | |
1506 | if ((off & 1) != 0) | |
1507 | off &= ~1; | |
1508 | else | |
1509 | { | |
1510 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1511 | sgot->contents + off); | |
1512 | h->got.offset |= 1; | |
1513 | } | |
1514 | } else { | |
1515 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1516 | } | |
1517 | ||
1518 | relocation = sgot->output_offset + off; | |
b29635ba | 1519 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1520 | rel->r_addend = 0; |
1521 | ||
b29635ba JT |
1522 | /* Change the reference to be indirect. */ |
1523 | contents[rel->r_offset - 1] |= 0x10; | |
1524 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1525 | } |
1526 | break; | |
1527 | ||
04981bc1 MR |
1528 | case R_VAX_PC32: |
1529 | /* If we are creating an executable and the function this | |
1530 | reloc refers to is in a shared lib, then we made a PLT | |
1531 | entry for this symbol and need to handle the reloc like | |
1532 | a PLT reloc. */ | |
1533 | if (info->shared) | |
1534 | goto r_vax_pc32_shared; | |
1535 | /* Fall through. */ | |
90ace9e9 JT |
1536 | case R_VAX_PLT32: |
1537 | /* Relocation is to the entry for this symbol in the | |
1538 | procedure linkage table. */ | |
1539 | ||
1540 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1541 | without using the procedure linkage table. */ | |
7b6021f1 MR |
1542 | if (h == NULL |
1543 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1544 | || h->forced_local) | |
90ace9e9 JT |
1545 | break; |
1546 | ||
1547 | if (h->plt.offset == (bfd_vma) -1 | |
1548 | || !elf_hash_table (info)->dynamic_sections_created) | |
1549 | { | |
1550 | /* We didn't make a PLT entry for this symbol. This | |
1551 | happens when statically linking PIC code, or when | |
1552 | using -Bsymbolic. */ | |
1553 | break; | |
1554 | } | |
1555 | ||
1556 | if (splt == NULL) | |
1557 | { | |
1558 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1559 | BFD_ASSERT (splt != NULL); | |
1560 | } | |
1561 | ||
1562 | if (sgotplt == NULL) | |
1563 | { | |
1564 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
d76b263e | 1565 | BFD_ASSERT (sgotplt != NULL); |
90ace9e9 JT |
1566 | } |
1567 | ||
1568 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1569 | ||
1570 | /* Get the offset into the .got table of the entry that | |
1571 | corresponds to this function. Each .got entry is 4 bytes. | |
1572 | The first two are reserved. */ | |
1573 | got_offset = (plt_index + 3) * 4; | |
1574 | ||
9e86195c | 1575 | /* We want the relocation to point into the .got.plt instead |
cedb70c5 | 1576 | of the plt itself. */ |
90ace9e9 JT |
1577 | relocation = (sgotplt->output_section->vma |
1578 | + sgotplt->output_offset | |
1579 | + got_offset); | |
1580 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1581 | if (rel->r_addend == 2) | |
1582 | { | |
1583 | h->plt.offset |= 1; | |
1584 | } | |
1585 | else if (rel->r_addend != 0) | |
1586 | (*_bfd_error_handler) | |
1587 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1588 | bfd_get_filename (input_bfd), rel->r_addend, | |
1589 | h->root.root.string, | |
1590 | bfd_get_section_name (input_bfd, input_section)); | |
1591 | rel->r_addend = 0; | |
1592 | ||
1593 | break; | |
1594 | ||
1595 | case R_VAX_PC8: | |
1596 | case R_VAX_PC16: | |
04981bc1 | 1597 | r_vax_pc32_shared: |
7b6021f1 MR |
1598 | if (h == NULL |
1599 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1600 | || h->forced_local) | |
90ace9e9 JT |
1601 | break; |
1602 | /* Fall through. */ | |
1603 | case R_VAX_8: | |
1604 | case R_VAX_16: | |
1605 | case R_VAX_32: | |
1606 | if (info->shared | |
cf35638d | 1607 | && r_symndx != STN_UNDEF |
90ace9e9 JT |
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 | { | |
83bac4b0 NC |
1625 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1626 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1627 | if (sreloc == NULL) | |
b34976b6 | 1628 | return FALSE; |
90ace9e9 JT |
1629 | } |
1630 | ||
b34976b6 AM |
1631 | skip = FALSE; |
1632 | relocate = FALSE; | |
90ace9e9 JT |
1633 | |
1634 | outrel.r_offset = | |
1635 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1636 | rel->r_offset); | |
1637 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1638 | skip = TRUE; |
90ace9e9 | 1639 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1640 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1641 | outrel.r_offset += (input_section->output_section->vma |
1642 | + input_section->output_offset); | |
1643 | ||
1644 | if (skip) | |
1645 | memset (&outrel, 0, sizeof outrel); | |
1646 | /* h->dynindx may be -1 if the symbol was marked to | |
1647 | become local. */ | |
1648 | else if (h != NULL | |
1649 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1650 | || !h->def_regular)) |
90ace9e9 JT |
1651 | { |
1652 | BFD_ASSERT (h->dynindx != -1); | |
1653 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1654 | outrel.r_addend = relocation + rel->r_addend; | |
1655 | } | |
1656 | else | |
1657 | { | |
1658 | if (r_type == R_VAX_32) | |
1659 | { | |
b34976b6 | 1660 | relocate = TRUE; |
90ace9e9 JT |
1661 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1662 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1663 | &contents[rel->r_offset]) == 0); | |
1664 | outrel.r_addend = relocation + rel->r_addend; | |
1665 | } | |
1666 | else | |
1667 | { | |
1668 | long indx; | |
1669 | ||
8517fae7 | 1670 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1671 | indx = 0; |
1672 | else if (sec == NULL || sec->owner == NULL) | |
1673 | { | |
1674 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1675 | return FALSE; |
90ace9e9 JT |
1676 | } |
1677 | else | |
1678 | { | |
1679 | asection *osec; | |
1680 | ||
74541ad4 AM |
1681 | /* We are turning this relocation into one |
1682 | against a section symbol. It would be | |
1683 | proper to subtract the symbol's value, | |
1684 | osec->vma, from the emitted reloc addend, | |
1685 | but ld.so expects buggy relocs. */ | |
90ace9e9 JT |
1686 | osec = sec->output_section; |
1687 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1688 | if (indx == 0) |
1689 | { | |
1690 | struct elf_link_hash_table *htab; | |
1691 | htab = elf_hash_table (info); | |
1692 | osec = htab->text_index_section; | |
1693 | indx = elf_section_data (osec)->dynindx; | |
1694 | } | |
1695 | BFD_ASSERT (indx != 0); | |
90ace9e9 JT |
1696 | } |
1697 | ||
1698 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1699 | outrel.r_addend = relocation + rel->r_addend; | |
1700 | } | |
1701 | } | |
1702 | ||
1703 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1704 | ".text") != 0 || |
90ace9e9 JT |
1705 | (info->shared |
1706 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1707 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1708 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1709 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1710 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1711 | { | |
1712 | if (h != NULL) | |
1713 | (*_bfd_error_handler) | |
1714 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1715 | bfd_get_filename (input_bfd), howto->name, | |
1716 | h->root.root.string, | |
1717 | bfd_get_section_name (input_bfd, input_section)); | |
1718 | else | |
1719 | (*_bfd_error_handler) | |
1720 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1721 | bfd_get_filename (input_bfd), howto->name, | |
1722 | outrel.r_addend, | |
1723 | bfd_get_section_name (input_bfd, input_section)); | |
1724 | } | |
947216bf AM |
1725 | loc = sreloc->contents; |
1726 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1727 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1728 | |
1729 | /* This reloc will be computed at runtime, so there's no | |
1730 | need to do anything now, except for R_VAX_32 | |
1731 | relocations that have been turned into | |
1732 | R_VAX_RELATIVE. */ | |
1733 | if (!relocate) | |
1734 | continue; | |
1735 | } | |
1736 | ||
1737 | break; | |
1738 | ||
1739 | case R_VAX_GNU_VTINHERIT: | |
1740 | case R_VAX_GNU_VTENTRY: | |
1741 | /* These are no-ops in the end. */ | |
1742 | continue; | |
1743 | ||
1744 | default: | |
1745 | break; | |
1746 | } | |
1747 | ||
b34976b6 | 1748 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1749 | So subtract the difference from the relocation amount since we can't |
1750 | add it to the offset. */ | |
90ace9e9 | 1751 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1752 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1753 | |
1754 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1755 | contents, rel->r_offset, | |
1756 | relocation, rel->r_addend); | |
1757 | ||
1758 | if (r != bfd_reloc_ok) | |
1759 | { | |
1760 | switch (r) | |
1761 | { | |
1762 | default: | |
1763 | case bfd_reloc_outofrange: | |
1764 | abort (); | |
1765 | case bfd_reloc_overflow: | |
1766 | { | |
1767 | const char *name; | |
1768 | ||
1769 | if (h != NULL) | |
dfeffb9f | 1770 | name = NULL; |
90ace9e9 JT |
1771 | else |
1772 | { | |
1773 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1774 | symtab_hdr->sh_link, | |
1775 | sym->st_name); | |
1776 | if (name == NULL) | |
b34976b6 | 1777 | return FALSE; |
90ace9e9 JT |
1778 | if (*name == '\0') |
1779 | name = bfd_section_name (input_bfd, sec); | |
1780 | } | |
1781 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1782 | (info, (h ? &h->root : NULL), name, howto->name, |
1783 | (bfd_vma) 0, input_bfd, input_section, | |
1784 | rel->r_offset))) | |
b34976b6 | 1785 | return FALSE; |
90ace9e9 JT |
1786 | } |
1787 | break; | |
1788 | } | |
1789 | } | |
1790 | } | |
1791 | ||
b34976b6 | 1792 | return TRUE; |
90ace9e9 JT |
1793 | } |
1794 | ||
1795 | /* Finish up dynamic symbol handling. We set the contents of various | |
1796 | dynamic sections here. */ | |
1797 | ||
b34976b6 | 1798 | static bfd_boolean |
ce71b576 NC |
1799 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1800 | struct elf_link_hash_entry *h, | |
1801 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1802 | { |
1803 | bfd *dynobj; | |
1804 | ||
1805 | dynobj = elf_hash_table (info)->dynobj; | |
1806 | ||
1807 | if (h->plt.offset != (bfd_vma) -1) | |
1808 | { | |
1809 | asection *splt; | |
1810 | asection *sgot; | |
1811 | asection *srela; | |
1812 | bfd_vma plt_index; | |
1813 | bfd_vma got_offset; | |
1814 | bfd_vma addend; | |
1815 | Elf_Internal_Rela rela; | |
947216bf | 1816 | bfd_byte *loc; |
90ace9e9 JT |
1817 | |
1818 | /* This symbol has an entry in the procedure linkage table. Set | |
1819 | it up. */ | |
90ace9e9 JT |
1820 | BFD_ASSERT (h->dynindx != -1); |
1821 | ||
1822 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1823 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1824 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1825 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1826 | ||
1827 | addend = 2 * (h->plt.offset & 1); | |
1828 | h->plt.offset &= ~1; | |
1829 | ||
1830 | /* Get the index in the procedure linkage table which | |
1831 | corresponds to this symbol. This is the index of this symbol | |
1832 | in all the symbols for which we are making plt entries. The | |
1833 | first entry in the procedure linkage table is reserved. */ | |
1834 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1835 | ||
1836 | /* Get the offset into the .got table of the entry that | |
1837 | corresponds to this function. Each .got entry is 4 bytes. | |
1838 | The first two are reserved. */ | |
1839 | got_offset = (plt_index + 3) * 4; | |
1840 | ||
1841 | /* Fill in the entry in the procedure linkage table. */ | |
1842 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1843 | PLT_ENTRY_SIZE); | |
1844 | ||
1845 | /* The offset is relative to the first extension word. */ | |
1846 | bfd_put_32 (output_bfd, | |
1847 | -(h->plt.offset + 8), | |
1848 | splt->contents + h->plt.offset + 4); | |
1849 | ||
1850 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1851 | splt->contents + h->plt.offset + 8); | |
1852 | ||
1853 | /* Fill in the entry in the global offset table. */ | |
1854 | bfd_put_32 (output_bfd, | |
1855 | (splt->output_section->vma | |
1856 | + splt->output_offset | |
1857 | + h->plt.offset) + addend, | |
1858 | sgot->contents + got_offset); | |
1859 | ||
1860 | /* Fill in the entry in the .rela.plt section. */ | |
1861 | rela.r_offset = (sgot->output_section->vma | |
1862 | + sgot->output_offset | |
1863 | + got_offset); | |
1864 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1865 | rela.r_addend = addend; | |
947216bf AM |
1866 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1867 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1868 | |
f5385ebf | 1869 | if (!h->def_regular) |
90ace9e9 JT |
1870 | { |
1871 | /* Mark the symbol as undefined, rather than as defined in | |
1872 | the .plt section. Leave the value alone. */ | |
1873 | sym->st_shndx = SHN_UNDEF; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | if (h->got.offset != (bfd_vma) -1) | |
1878 | { | |
1879 | asection *sgot; | |
1880 | asection *srela; | |
1881 | Elf_Internal_Rela rela; | |
947216bf | 1882 | bfd_byte *loc; |
90ace9e9 JT |
1883 | |
1884 | /* This symbol has an entry in the global offset table. Set it | |
1885 | up. */ | |
90ace9e9 JT |
1886 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1887 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1888 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1889 | ||
1890 | rela.r_offset = (sgot->output_section->vma | |
1891 | + sgot->output_offset | |
1892 | + (h->got.offset &~ 1)); | |
1893 | ||
1894 | /* If the symbol was forced to be local because of a version file | |
1895 | locally we just want to emit a RELATIVE reloc. The entry in | |
1896 | the global offset table will already have been initialized in | |
1897 | the relocate_section function. */ | |
1898 | if (info->shared | |
1899 | && h->dynindx == -1 | |
f5385ebf | 1900 | && h->def_regular) |
90ace9e9 JT |
1901 | { |
1902 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1907 | } | |
1908 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1909 | (sgot->contents | |
1910 | + (h->got.offset & ~1))); | |
1911 | ||
947216bf AM |
1912 | loc = srela->contents; |
1913 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1914 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1915 | } |
1916 | ||
f5385ebf | 1917 | if (h->needs_copy) |
90ace9e9 JT |
1918 | { |
1919 | asection *s; | |
1920 | Elf_Internal_Rela rela; | |
947216bf | 1921 | bfd_byte *loc; |
90ace9e9 JT |
1922 | |
1923 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1924 | BFD_ASSERT (h->dynindx != -1 |
1925 | && (h->root.type == bfd_link_hash_defined | |
1926 | || h->root.type == bfd_link_hash_defweak)); | |
1927 | ||
1928 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1929 | ".rela.bss"); | |
1930 | BFD_ASSERT (s != NULL); | |
1931 | ||
1932 | rela.r_offset = (h->root.u.def.value | |
1933 | + h->root.u.def.section->output_section->vma | |
1934 | + h->root.u.def.section->output_offset); | |
1935 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1936 | rela.r_addend = 0; | |
947216bf AM |
1937 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1938 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1939 | } |
1940 | ||
1941 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1942 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 1943 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1944 | sym->st_shndx = SHN_ABS; |
1945 | ||
b34976b6 | 1946 | return TRUE; |
90ace9e9 JT |
1947 | } |
1948 | ||
1949 | /* Finish up the dynamic sections. */ | |
1950 | ||
b34976b6 | 1951 | static bfd_boolean |
ce71b576 | 1952 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1953 | { |
1954 | bfd *dynobj; | |
1955 | asection *sgot; | |
1956 | asection *sdyn; | |
1957 | ||
1958 | dynobj = elf_hash_table (info)->dynobj; | |
1959 | ||
1960 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1961 | BFD_ASSERT (sgot != NULL); | |
1962 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1963 | ||
1964 | if (elf_hash_table (info)->dynamic_sections_created) | |
1965 | { | |
1966 | asection *splt; | |
1967 | Elf32_External_Dyn *dyncon, *dynconend; | |
1968 | ||
1969 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1970 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1971 | ||
1972 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1973 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1974 | for (; dyncon < dynconend; dyncon++) |
1975 | { | |
1976 | Elf_Internal_Dyn dyn; | |
1977 | const char *name; | |
1978 | asection *s; | |
1979 | ||
1980 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1981 | ||
1982 | switch (dyn.d_tag) | |
1983 | { | |
1984 | default: | |
1985 | break; | |
1986 | ||
1987 | case DT_PLTGOT: | |
1988 | name = ".got"; | |
1989 | goto get_vma; | |
1990 | case DT_JMPREL: | |
1991 | name = ".rela.plt"; | |
1992 | get_vma: | |
1993 | s = bfd_get_section_by_name (output_bfd, name); | |
1994 | BFD_ASSERT (s != NULL); | |
1995 | dyn.d_un.d_ptr = s->vma; | |
1996 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1997 | break; | |
1998 | ||
1999 | case DT_PLTRELSZ: | |
2000 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2001 | BFD_ASSERT (s != NULL); | |
eea6121a | 2002 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2003 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2004 | break; | |
2005 | ||
2006 | case DT_RELASZ: | |
2007 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2008 | not be included in the overall relocs (DT_RELA). | |
2009 | Therefore, we override the DT_RELASZ entry here to | |
2010 | make it not include the JMPREL relocs. Since the | |
2011 | linker script arranges for .rela.plt to follow all | |
2012 | other relocation sections, we don't have to worry | |
2013 | about changing the DT_RELA entry. */ | |
2014 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2015 | if (s != NULL) | |
eea6121a | 2016 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2017 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2018 | break; | |
2019 | } | |
2020 | } | |
2021 | ||
2022 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2023 | if (splt->size > 0) |
90ace9e9 JT |
2024 | { |
2025 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2026 | bfd_put_32 (output_bfd, | |
2027 | (sgot->output_section->vma | |
2028 | + sgot->output_offset + 4 | |
2029 | - (splt->output_section->vma + 6)), | |
2030 | splt->contents + 2); | |
2031 | bfd_put_32 (output_bfd, | |
2032 | (sgot->output_section->vma | |
2033 | + sgot->output_offset + 8 | |
2034 | - (splt->output_section->vma + 12)), | |
2035 | splt->contents + 8); | |
cedb70c5 | 2036 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2037 | = PLT_ENTRY_SIZE; |
2038 | } | |
2039 | } | |
2040 | ||
2041 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2042 | if (sgot->size > 0) |
90ace9e9 JT |
2043 | { |
2044 | if (sdyn == NULL) | |
2045 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2046 | else | |
2047 | bfd_put_32 (output_bfd, | |
2048 | sdyn->output_section->vma + sdyn->output_offset, | |
2049 | sgot->contents); | |
2050 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2051 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2052 | } | |
2053 | ||
2054 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2055 | ||
b34976b6 | 2056 | return TRUE; |
90ace9e9 JT |
2057 | } |
2058 | ||
9b90d8fd MR |
2059 | static enum elf_reloc_type_class |
2060 | elf_vax_reloc_type_class (const Elf_Internal_Rela *rela) | |
2061 | { | |
2062 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2063 | { | |
2064 | case R_VAX_RELATIVE: | |
2065 | return reloc_class_relative; | |
2066 | case R_VAX_JMP_SLOT: | |
2067 | return reloc_class_plt; | |
2068 | case R_VAX_COPY: | |
2069 | return reloc_class_copy; | |
2070 | default: | |
2071 | return reloc_class_normal; | |
2072 | } | |
2073 | } | |
2074 | ||
6db7e006 MR |
2075 | static bfd_vma |
2076 | elf_vax_plt_sym_val (bfd_vma i, const asection *plt, | |
2077 | const arelent *rel ATTRIBUTE_UNUSED) | |
2078 | { | |
2079 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
2080 | } | |
2081 | ||
90ace9e9 JT |
2082 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec |
2083 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2084 | #define ELF_MACHINE_CODE EM_VAX | |
2085 | #define ELF_MAXPAGESIZE 0x1000 | |
2086 | ||
2087 | #define elf_backend_create_dynamic_sections \ | |
2088 | _bfd_elf_create_dynamic_sections | |
2089 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2090 | elf_vax_link_hash_table_create | |
c152c796 | 2091 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2092 | |
2093 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2094 | #define elf_backend_adjust_dynamic_symbol \ | |
2095 | elf_vax_adjust_dynamic_symbol | |
2096 | #define elf_backend_size_dynamic_sections \ | |
2097 | elf_vax_size_dynamic_sections | |
74541ad4 | 2098 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
90ace9e9 JT |
2099 | #define elf_backend_relocate_section elf_vax_relocate_section |
2100 | #define elf_backend_finish_dynamic_symbol \ | |
2101 | elf_vax_finish_dynamic_symbol | |
2102 | #define elf_backend_finish_dynamic_sections \ | |
2103 | elf_vax_finish_dynamic_sections | |
9b90d8fd | 2104 | #define elf_backend_reloc_type_class elf_vax_reloc_type_class |
90ace9e9 JT |
2105 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook |
2106 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
6db7e006 | 2107 | #define elf_backend_plt_sym_val elf_vax_plt_sym_val |
90ace9e9 JT |
2108 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2109 | elf32_vax_merge_private_bfd_data | |
2110 | #define bfd_elf32_bfd_set_private_flags \ | |
2111 | elf32_vax_set_private_flags | |
2112 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2113 | elf32_vax_print_private_bfd_data | |
2114 | ||
2115 | #define elf_backend_can_gc_sections 1 | |
2116 | #define elf_backend_want_got_plt 1 | |
2117 | #define elf_backend_plt_readonly 1 | |
2118 | #define elf_backend_want_plt_sym 0 | |
2119 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2120 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2121 | |
2122 | #include "elf32-target.h" |