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, |
1d7e9d18 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
7686d77d | 4 | Free Software Foundation, Inc. |
90ace9e9 JT |
5 | Contributed by Matt Thomas <matt@3am-software.com>. |
6 | ||
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
90ace9e9 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
90ace9e9 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
90ace9e9 | 18 | |
ae9a127f NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
90ace9e9 | 23 | |
90ace9e9 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
90ace9e9 JT |
26 | #include "bfdlink.h" |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "elf/vax.h" | |
30 | ||
ce71b576 NC |
31 | static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type); |
32 | static void rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *); | |
33 | static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *, | |
34 | struct bfd_hash_table *, | |
35 | const char *); | |
36 | static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *); | |
37 | static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *, | |
38 | asection *, const Elf_Internal_Rela *); | |
ce71b576 NC |
39 | static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *, |
40 | struct elf_link_hash_entry *); | |
41 | static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *); | |
42 | static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *, | |
43 | bfd *, asection *, bfd_byte *, | |
44 | Elf_Internal_Rela *, | |
45 | Elf_Internal_Sym *, asection **); | |
46 | static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *, | |
47 | struct elf_link_hash_entry *, | |
48 | Elf_Internal_Sym *); | |
49 | static bfd_boolean elf_vax_finish_dynamic_sections (bfd *, | |
50 | struct bfd_link_info *); | |
6db7e006 MR |
51 | static bfd_vma elf_vax_plt_sym_val (bfd_vma, const asection *, |
52 | const arelent *); | |
ce71b576 NC |
53 | |
54 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
55 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
2c3fc389 | 56 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, void *); |
90ace9e9 JT |
57 | |
58 | static reloc_howto_type howto_table[] = { | |
59 | HOWTO (R_VAX_NONE, /* type */ | |
60 | 0, /* rightshift */ | |
61 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
62 | 0, /* bitsize */ | |
b34976b6 | 63 | FALSE, /* pc_relative */ |
90ace9e9 JT |
64 | 0, /* bitpos */ |
65 | complain_overflow_dont, /* complain_on_overflow */ | |
66 | bfd_elf_generic_reloc, /* special_function */ | |
67 | "R_VAX_NONE", /* name */ | |
b34976b6 | 68 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
69 | 0, /* src_mask */ |
70 | 0x00000000, /* dst_mask */ | |
b34976b6 | 71 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
72 | |
73 | HOWTO (R_VAX_32, /* type */ | |
74 | 0, /* rightshift */ | |
75 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
76 | 32, /* bitsize */ | |
b34976b6 | 77 | FALSE, /* pc_relative */ |
90ace9e9 JT |
78 | 0, /* bitpos */ |
79 | complain_overflow_bitfield, /* complain_on_overflow */ | |
80 | bfd_elf_generic_reloc, /* special_function */ | |
81 | "R_VAX_32", /* name */ | |
b34976b6 | 82 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
83 | 0, /* src_mask */ |
84 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 85 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
86 | |
87 | HOWTO (R_VAX_16, /* type */ | |
88 | 0, /* rightshift */ | |
89 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
90 | 16, /* bitsize */ | |
b34976b6 | 91 | FALSE, /* pc_relative */ |
90ace9e9 JT |
92 | 0, /* bitpos */ |
93 | complain_overflow_bitfield, /* complain_on_overflow */ | |
94 | bfd_elf_generic_reloc, /* special_function */ | |
95 | "R_VAX_16", /* name */ | |
b34976b6 | 96 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
97 | 0, /* src_mask */ |
98 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 99 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
100 | |
101 | HOWTO (R_VAX_8, /* type */ | |
102 | 0, /* rightshift */ | |
103 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
104 | 8, /* bitsize */ | |
b34976b6 | 105 | FALSE, /* pc_relative */ |
90ace9e9 JT |
106 | 0, /* bitpos */ |
107 | complain_overflow_bitfield, /* complain_on_overflow */ | |
108 | bfd_elf_generic_reloc, /* special_function */ | |
109 | "R_VAX_8", /* name */ | |
b34976b6 | 110 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
111 | 0, /* src_mask */ |
112 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 113 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
114 | |
115 | HOWTO (R_VAX_PC32, /* type */ | |
116 | 0, /* rightshift */ | |
117 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
118 | 32, /* bitsize */ | |
b34976b6 | 119 | TRUE, /* pc_relative */ |
90ace9e9 JT |
120 | 0, /* bitpos */ |
121 | complain_overflow_bitfield, /* complain_on_overflow */ | |
122 | bfd_elf_generic_reloc, /* special_function */ | |
123 | "R_VAX_PC32", /* name */ | |
b34976b6 | 124 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
125 | 0, /* src_mask */ |
126 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 127 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
128 | |
129 | HOWTO (R_VAX_PC16, /* type */ | |
130 | 0, /* rightshift */ | |
131 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
132 | 16, /* bitsize */ | |
b34976b6 | 133 | TRUE, /* pc_relative */ |
90ace9e9 JT |
134 | 0, /* bitpos */ |
135 | complain_overflow_signed, /* complain_on_overflow */ | |
136 | bfd_elf_generic_reloc, /* special_function */ | |
137 | "R_VAX_PC16", /* name */ | |
b34976b6 | 138 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
139 | 0, /* src_mask */ |
140 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 141 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
142 | |
143 | HOWTO (R_VAX_PC8, /* type */ | |
144 | 0, /* rightshift */ | |
145 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
146 | 8, /* bitsize */ | |
b34976b6 | 147 | TRUE, /* pc_relative */ |
90ace9e9 JT |
148 | 0, /* bitpos */ |
149 | complain_overflow_signed, /* complain_on_overflow */ | |
150 | bfd_elf_generic_reloc, /* special_function */ | |
151 | "R_VAX_PC8", /* name */ | |
b34976b6 | 152 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
153 | 0, /* src_mask */ |
154 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 155 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
156 | |
157 | HOWTO (R_VAX_GOT32, /* type */ | |
158 | 0, /* rightshift */ | |
159 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
160 | 32, /* bitsize */ | |
b34976b6 | 161 | TRUE, /* pc_relative */ |
90ace9e9 JT |
162 | 0, /* bitpos */ |
163 | complain_overflow_bitfield, /* complain_on_overflow */ | |
164 | bfd_elf_generic_reloc, /* special_function */ | |
165 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 166 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
167 | 0, /* src_mask */ |
168 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 169 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
170 | |
171 | EMPTY_HOWTO (-1), | |
172 | EMPTY_HOWTO (-1), | |
173 | EMPTY_HOWTO (-1), | |
174 | EMPTY_HOWTO (-1), | |
175 | EMPTY_HOWTO (-1), | |
176 | ||
177 | HOWTO (R_VAX_PLT32, /* type */ | |
178 | 0, /* rightshift */ | |
179 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
180 | 32, /* bitsize */ | |
b34976b6 | 181 | TRUE, /* pc_relative */ |
90ace9e9 JT |
182 | 0, /* bitpos */ |
183 | complain_overflow_bitfield, /* complain_on_overflow */ | |
184 | bfd_elf_generic_reloc, /* special_function */ | |
185 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 186 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
187 | 0, /* src_mask */ |
188 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 189 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
190 | |
191 | EMPTY_HOWTO (-1), | |
192 | EMPTY_HOWTO (-1), | |
193 | EMPTY_HOWTO (-1), | |
194 | EMPTY_HOWTO (-1), | |
195 | EMPTY_HOWTO (-1), | |
196 | ||
197 | HOWTO (R_VAX_COPY, /* type */ | |
198 | 0, /* rightshift */ | |
199 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 0, /* bitsize */ | |
b34976b6 | 201 | FALSE, /* pc_relative */ |
90ace9e9 JT |
202 | 0, /* bitpos */ |
203 | complain_overflow_dont, /* complain_on_overflow */ | |
204 | bfd_elf_generic_reloc, /* special_function */ | |
205 | "R_VAX_COPY", /* name */ | |
b34976b6 | 206 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
207 | 0, /* src_mask */ |
208 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 209 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
210 | |
211 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
212 | 0, /* rightshift */ | |
213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
214 | 32, /* bitsize */ | |
b34976b6 | 215 | FALSE, /* pc_relative */ |
90ace9e9 JT |
216 | 0, /* bitpos */ |
217 | complain_overflow_dont, /* complain_on_overflow */ | |
218 | bfd_elf_generic_reloc, /* special_function */ | |
219 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 220 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
221 | 0, /* src_mask */ |
222 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 223 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
224 | |
225 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 32, /* bitsize */ | |
b34976b6 | 229 | FALSE, /* pc_relative */ |
90ace9e9 JT |
230 | 0, /* bitpos */ |
231 | complain_overflow_dont, /* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 234 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
235 | 0, /* src_mask */ |
236 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 237 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
238 | |
239 | HOWTO (R_VAX_RELATIVE, /* type */ | |
240 | 0, /* rightshift */ | |
241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 32, /* bitsize */ | |
b34976b6 | 243 | FALSE, /* pc_relative */ |
90ace9e9 JT |
244 | 0, /* bitpos */ |
245 | complain_overflow_dont, /* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 248 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
249 | 0, /* src_mask */ |
250 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 251 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
252 | |
253 | /* GNU extension to record C++ vtable hierarchy */ | |
254 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
255 | 0, /* rightshift */ | |
256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
257 | 0, /* bitsize */ | |
b34976b6 | 258 | FALSE, /* pc_relative */ |
90ace9e9 JT |
259 | 0, /* bitpos */ |
260 | complain_overflow_dont, /* complain_on_overflow */ | |
261 | NULL, /* special_function */ | |
262 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 263 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
264 | 0, /* src_mask */ |
265 | 0, /* dst_mask */ | |
b34976b6 | 266 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
267 | |
268 | /* GNU extension to record C++ vtable member usage */ | |
269 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
270 | 0, /* rightshift */ | |
271 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
272 | 0, /* bitsize */ | |
b34976b6 | 273 | FALSE, /* pc_relative */ |
90ace9e9 JT |
274 | 0, /* bitpos */ |
275 | complain_overflow_dont, /* complain_on_overflow */ | |
276 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
277 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 278 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
279 | 0, /* src_mask */ |
280 | 0, /* dst_mask */ | |
b34976b6 | 281 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
282 | }; |
283 | ||
284 | static void | |
ce71b576 NC |
285 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
286 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
287 | { |
288 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
289 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
290 | } | |
291 | ||
292 | #define elf_info_to_howto rtype_to_howto | |
293 | ||
294 | static const struct | |
295 | { | |
296 | bfd_reloc_code_real_type bfd_val; | |
297 | int elf_val; | |
298 | } reloc_map[] = { | |
299 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
300 | { BFD_RELOC_32, R_VAX_32 }, | |
301 | { BFD_RELOC_16, R_VAX_16 }, | |
302 | { BFD_RELOC_8, R_VAX_8 }, | |
303 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
304 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
305 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
306 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
307 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
308 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
309 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
310 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
311 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
312 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
313 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
314 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
315 | }; | |
316 | ||
317 | static reloc_howto_type * | |
ce71b576 | 318 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
319 | { |
320 | unsigned int i; | |
321 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
322 | { | |
323 | if (reloc_map[i].bfd_val == code) | |
324 | return &howto_table[reloc_map[i].elf_val]; | |
325 | } | |
326 | return 0; | |
327 | } | |
328 | ||
157090f7 AM |
329 | static reloc_howto_type * |
330 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
331 | const char *r_name) | |
332 | { | |
333 | unsigned int i; | |
334 | ||
335 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
336 | if (howto_table[i].name != NULL | |
337 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
338 | return &howto_table[i]; | |
339 | ||
340 | return NULL; | |
341 | } | |
342 | ||
90ace9e9 | 343 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 344 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
90ace9e9 JT |
345 | #define ELF_ARCH bfd_arch_vax |
346 | /* end code generated by elf.el */ | |
90ace9e9 JT |
347 | \f |
348 | /* Functions for the VAX ELF linker. */ | |
349 | ||
350 | /* The name of the dynamic interpreter. This is put in the .interp | |
351 | section. */ | |
352 | ||
353 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
354 | ||
355 | /* The size in bytes of an entry in the procedure linkage table. */ | |
356 | ||
357 | #define PLT_ENTRY_SIZE 12 | |
358 | ||
359 | /* The first entry in a procedure linkage table looks like this. See | |
360 | the SVR4 ABI VAX supplement to see how this works. */ | |
361 | ||
362 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
363 | { | |
364 | 0xdd, 0xef, /* pushl l^ */ | |
365 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
366 | 0x17, 0xff, /* jmp @L^(pc) */ | |
367 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
368 | }; | |
369 | ||
370 | /* Subsequent entries in a procedure linkage table look like this. */ | |
371 | ||
372 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
373 | { | |
6c4fb25a | 374 | 0xfc, 0x0f, /* .word ^M<r11:r2> */ |
71f136d6 | 375 | 0x16, 0xef, /* jsb L^(pc) */ |
90ace9e9 JT |
376 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ |
377 | 0, 0, 0, 0, /* index into .rela.plt */ | |
378 | }; | |
379 | ||
380 | /* The VAX linker needs to keep track of the number of relocs that it | |
381 | decides to copy in check_relocs for each symbol. This is so that it | |
382 | can discard PC relative relocs if it doesn't need them when linking | |
383 | with -Bsymbolic. We store the information in a field extending the | |
384 | regular ELF linker hash table. */ | |
385 | ||
386 | /* This structure keeps track of the number of PC relative relocs we have | |
387 | copied for a given symbol. */ | |
388 | ||
389 | struct elf_vax_pcrel_relocs_copied | |
390 | { | |
391 | /* Next section. */ | |
392 | struct elf_vax_pcrel_relocs_copied *next; | |
393 | /* A section in dynobj. */ | |
394 | asection *section; | |
395 | /* Number of relocs copied in this section. */ | |
396 | bfd_size_type count; | |
397 | }; | |
398 | ||
399 | /* VAX ELF linker hash entry. */ | |
400 | ||
401 | struct elf_vax_link_hash_entry | |
402 | { | |
403 | struct elf_link_hash_entry root; | |
404 | ||
405 | /* Number of PC relative relocs copied for this symbol. */ | |
406 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
407 | ||
408 | bfd_vma got_addend; | |
409 | }; | |
410 | ||
90ace9e9 JT |
411 | /* Declare this now that the above structures are defined. */ |
412 | ||
ce71b576 | 413 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
4dfe6ac6 | 414 | void *); |
90ace9e9 | 415 | |
b29635ba JT |
416 | /* Declare this now that the above structures are defined. */ |
417 | ||
ce71b576 | 418 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
4dfe6ac6 | 419 | void *); |
b29635ba | 420 | |
90ace9e9 JT |
421 | /* Traverse an VAX ELF linker hash table. */ |
422 | ||
423 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
424 | (elf_link_hash_traverse \ | |
4dfe6ac6 | 425 | ((table), \ |
2c3fc389 | 426 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
90ace9e9 JT |
427 | (info))) |
428 | ||
90ace9e9 JT |
429 | /* Create an entry in an VAX ELF linker hash table. */ |
430 | ||
431 | static struct bfd_hash_entry * | |
ce71b576 NC |
432 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
433 | struct bfd_hash_table *table, | |
434 | const char *string) | |
90ace9e9 JT |
435 | { |
436 | struct elf_vax_link_hash_entry *ret = | |
437 | (struct elf_vax_link_hash_entry *) entry; | |
438 | ||
439 | /* Allocate the structure if it has not already been allocated by a | |
440 | subclass. */ | |
ce71b576 | 441 | if (ret == NULL) |
90ace9e9 JT |
442 | ret = ((struct elf_vax_link_hash_entry *) |
443 | bfd_hash_allocate (table, | |
444 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 445 | if (ret == NULL) |
90ace9e9 JT |
446 | return (struct bfd_hash_entry *) ret; |
447 | ||
448 | /* Call the allocation method of the superclass. */ | |
449 | ret = ((struct elf_vax_link_hash_entry *) | |
450 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
451 | table, string)); | |
ce71b576 | 452 | if (ret != NULL) |
90ace9e9 JT |
453 | { |
454 | ret->pcrel_relocs_copied = NULL; | |
455 | } | |
456 | ||
457 | return (struct bfd_hash_entry *) ret; | |
458 | } | |
459 | ||
460 | /* Create an VAX ELF linker hash table. */ | |
461 | ||
462 | static struct bfd_link_hash_table * | |
ce71b576 | 463 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 | 464 | { |
4dfe6ac6 NC |
465 | struct elf_link_hash_table *ret; |
466 | bfd_size_type amt = sizeof (struct elf_link_hash_table); | |
90ace9e9 | 467 | |
7bf52ea2 | 468 | ret = bfd_zmalloc (amt); |
ce71b576 | 469 | if (ret == NULL) |
90ace9e9 JT |
470 | return NULL; |
471 | ||
4dfe6ac6 | 472 | if (!_bfd_elf_link_hash_table_init (ret, abfd, |
66eb6687 | 473 | elf_vax_link_hash_newfunc, |
4dfe6ac6 NC |
474 | sizeof (struct elf_vax_link_hash_entry), |
475 | GENERIC_ELF_DATA)) | |
90ace9e9 JT |
476 | { |
477 | free (ret); | |
478 | return NULL; | |
479 | } | |
480 | ||
4dfe6ac6 | 481 | return &ret->root; |
90ace9e9 JT |
482 | } |
483 | ||
484 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 485 | static bfd_boolean |
ce71b576 | 486 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
487 | { |
488 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
489 | elf_flags_init (abfd) = TRUE; |
490 | return TRUE; | |
90ace9e9 JT |
491 | } |
492 | ||
493 | /* Merge backend specific data from an object file to the output | |
494 | object file when linking. */ | |
b34976b6 | 495 | static bfd_boolean |
ce71b576 | 496 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 | 497 | { |
90ace9e9 JT |
498 | flagword in_flags; |
499 | ||
500 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
501 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 502 | return TRUE; |
90ace9e9 JT |
503 | |
504 | in_flags = elf_elfheader (ibfd)->e_flags; | |
90ace9e9 JT |
505 | |
506 | if (!elf_flags_init (obfd)) | |
507 | { | |
b34976b6 | 508 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
509 | elf_elfheader (obfd)->e_flags = in_flags; |
510 | } | |
511 | ||
b34976b6 | 512 | return TRUE; |
90ace9e9 JT |
513 | } |
514 | ||
515 | /* Display the flags field */ | |
b34976b6 | 516 | static bfd_boolean |
2c3fc389 | 517 | elf32_vax_print_private_bfd_data (bfd *abfd, void * ptr) |
90ace9e9 JT |
518 | { |
519 | FILE *file = (FILE *) ptr; | |
520 | ||
521 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
522 | ||
523 | /* Print normal ELF private data. */ | |
524 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
525 | ||
526 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
527 | ||
528 | /* xgettext:c-format */ | |
529 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
530 | ||
179d3252 | 531 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
532 | fprintf (file, _(" [nonpic]")); |
533 | ||
179d3252 | 534 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
535 | fprintf (file, _(" [d-float]")); |
536 | ||
179d3252 | 537 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
538 | fprintf (file, _(" [g-float]")); |
539 | ||
540 | fputc ('\n', file); | |
541 | ||
b34976b6 | 542 | return TRUE; |
90ace9e9 JT |
543 | } |
544 | /* Look through the relocs for a section during the first phase, and | |
545 | allocate space in the global offset table or procedure linkage | |
546 | table. */ | |
547 | ||
b34976b6 | 548 | static bfd_boolean |
ce71b576 NC |
549 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
550 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
551 | { |
552 | bfd *dynobj; | |
553 | Elf_Internal_Shdr *symtab_hdr; | |
554 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
555 | const Elf_Internal_Rela *rel; |
556 | const Elf_Internal_Rela *rel_end; | |
557 | asection *sgot; | |
558 | asection *srelgot; | |
559 | asection *sreloc; | |
560 | ||
1049f94e | 561 | if (info->relocatable) |
b34976b6 | 562 | return TRUE; |
90ace9e9 JT |
563 | |
564 | dynobj = elf_hash_table (info)->dynobj; | |
565 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
566 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
567 | |
568 | sgot = NULL; | |
569 | srelgot = NULL; | |
570 | sreloc = NULL; | |
571 | ||
572 | rel_end = relocs + sec->reloc_count; | |
573 | for (rel = relocs; rel < rel_end; rel++) | |
574 | { | |
575 | unsigned long r_symndx; | |
576 | struct elf_link_hash_entry *h; | |
577 | ||
578 | r_symndx = ELF32_R_SYM (rel->r_info); | |
579 | ||
580 | if (r_symndx < symtab_hdr->sh_info) | |
581 | h = NULL; | |
582 | else | |
973a3492 L |
583 | { |
584 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
585 | while (h->root.type == bfd_link_hash_indirect | |
586 | || h->root.type == bfd_link_hash_warning) | |
587 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
588 | |
589 | /* PR15323, ref flags aren't set for references in the same | |
590 | object. */ | |
591 | h->root.non_ir_ref = 1; | |
973a3492 | 592 | } |
90ace9e9 JT |
593 | |
594 | switch (ELF32_R_TYPE (rel->r_info)) | |
595 | { | |
596 | case R_VAX_GOT32: | |
fe723c87 MT |
597 | BFD_ASSERT (h != NULL); |
598 | if (h->forced_local | |
599 | || h == elf_hash_table (info)->hgot | |
600 | || h == elf_hash_table (info)->hplt) | |
90ace9e9 JT |
601 | break; |
602 | ||
7b6021f1 MR |
603 | /* If this is a local symbol, we resolve it directly without |
604 | creating a global offset table entry. */ | |
605 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
606 | break; | |
607 | ||
90ace9e9 JT |
608 | /* This symbol requires a global offset table entry. */ |
609 | ||
610 | if (dynobj == NULL) | |
611 | { | |
612 | /* Create the .got section. */ | |
613 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
614 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 615 | return FALSE; |
90ace9e9 JT |
616 | } |
617 | ||
618 | if (sgot == NULL) | |
619 | { | |
3d4d4302 | 620 | sgot = bfd_get_linker_section (dynobj, ".got"); |
90ace9e9 JT |
621 | BFD_ASSERT (sgot != NULL); |
622 | } | |
623 | ||
624 | if (srelgot == NULL | |
625 | && (h != NULL || info->shared)) | |
626 | { | |
3d4d4302 | 627 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
90ace9e9 JT |
628 | if (srelgot == NULL) |
629 | { | |
3d4d4302 AM |
630 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
631 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
632 | | SEC_READONLY); | |
633 | ||
634 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
635 | ".rela.got", | |
636 | flags); | |
90ace9e9 | 637 | if (srelgot == NULL |
90ace9e9 | 638 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 639 | return FALSE; |
90ace9e9 JT |
640 | } |
641 | } | |
642 | ||
643 | if (h != NULL) | |
644 | { | |
645 | struct elf_vax_link_hash_entry *eh; | |
646 | ||
647 | eh = (struct elf_vax_link_hash_entry *) h; | |
648 | if (h->got.refcount == -1) | |
649 | { | |
650 | h->got.refcount = 1; | |
651 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
652 | } |
653 | else | |
654 | { | |
655 | h->got.refcount++; | |
656 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
657 | (*_bfd_error_handler) | |
fe723c87 MT |
658 | (_("%s: warning: GOT addend of %ld to `%s' does" |
659 | " not match previous GOT addend of %ld"), | |
660 | bfd_get_filename (abfd), rel->r_addend, | |
661 | h->root.root.string, | |
662 | eh->got_addend); | |
cedb70c5 | 663 | |
90ace9e9 JT |
664 | } |
665 | } | |
666 | break; | |
667 | ||
668 | case R_VAX_PLT32: | |
669 | /* This symbol requires a procedure linkage table entry. We | |
670 | actually build the entry in adjust_dynamic_symbol, | |
671 | because this might be a case of linking PIC code which is | |
672 | never referenced by a dynamic object, in which case we | |
673 | don't need to generate a procedure linkage table entry | |
674 | after all. */ | |
675 | ||
676 | /* If this is a local symbol, we resolve it directly without | |
677 | creating a procedure linkage table entry. */ | |
fe723c87 | 678 | BFD_ASSERT (h != NULL); |
7b6021f1 | 679 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT || h->forced_local) |
fe723c87 | 680 | break; |
90ace9e9 | 681 | |
f5385ebf | 682 | h->needs_plt = 1; |
90ace9e9 JT |
683 | if (h->plt.refcount == -1) |
684 | h->plt.refcount = 1; | |
685 | else | |
686 | h->plt.refcount++; | |
687 | break; | |
688 | ||
689 | case R_VAX_PC8: | |
690 | case R_VAX_PC16: | |
691 | case R_VAX_PC32: | |
692 | /* If we are creating a shared library and this is not a local | |
693 | symbol, we need to copy the reloc into the shared library. | |
694 | However when linking with -Bsymbolic and this is a global | |
695 | symbol which is defined in an object we are including in the | |
696 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
697 | reloc directly. At this point we have not seen all the input | |
698 | files, so it is possible that DEF_REGULAR is not set now but | |
699 | will be set later (it is never cleared). We account for that | |
700 | possibility below by storing information in the | |
701 | pcrel_relocs_copied field of the hash table entry. */ | |
702 | if (!(info->shared | |
703 | && (sec->flags & SEC_ALLOC) != 0 | |
704 | && h != NULL | |
705 | && (!info->symbolic | |
f5385ebf | 706 | || !h->def_regular))) |
90ace9e9 | 707 | { |
7b6021f1 MR |
708 | if (h != NULL |
709 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
710 | && !h->forced_local) | |
90ace9e9 JT |
711 | { |
712 | /* Make sure a plt entry is created for this symbol if | |
713 | it turns out to be a function defined by a dynamic | |
714 | object. */ | |
715 | if (h->plt.refcount == -1) | |
716 | h->plt.refcount = 1; | |
717 | else | |
718 | h->plt.refcount++; | |
719 | } | |
720 | break; | |
721 | } | |
7b6021f1 MR |
722 | /* If this is a local symbol, we can resolve it directly. */ |
723 | if (h != NULL | |
724 | && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
725 | || h->forced_local)) | |
fe723c87 MT |
726 | break; |
727 | ||
90ace9e9 JT |
728 | /* Fall through. */ |
729 | case R_VAX_8: | |
730 | case R_VAX_16: | |
731 | case R_VAX_32: | |
7b6021f1 | 732 | if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
90ace9e9 JT |
733 | { |
734 | /* Make sure a plt entry is created for this symbol if it | |
735 | turns out to be a function defined by a dynamic object. */ | |
736 | if (h->plt.refcount == -1) | |
737 | h->plt.refcount = 1; | |
738 | else | |
739 | h->plt.refcount++; | |
740 | } | |
741 | ||
742 | /* If we are creating a shared library, we need to copy the | |
743 | reloc into the shared library. */ | |
744 | if (info->shared | |
745 | && (sec->flags & SEC_ALLOC) != 0) | |
746 | { | |
747 | /* When creating a shared object, we must copy these | |
748 | reloc types into the output file. We create a reloc | |
749 | section in dynobj and make room for this reloc. */ | |
750 | if (sreloc == NULL) | |
751 | { | |
83bac4b0 NC |
752 | sreloc = _bfd_elf_make_dynamic_reloc_section |
753 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
90ace9e9 | 754 | |
83bac4b0 | 755 | if (sreloc == NULL) |
b34976b6 | 756 | return FALSE; |
90ace9e9 | 757 | |
90ace9e9 JT |
758 | if (sec->flags & SEC_READONLY) |
759 | info->flags |= DF_TEXTREL; | |
760 | } | |
761 | ||
eea6121a | 762 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
763 | |
764 | /* If we are linking with -Bsymbolic, we count the number of | |
765 | PC relative relocations we have entered for this symbol, | |
766 | so that we can discard them again if the symbol is later | |
767 | defined by a regular object. Note that this function is | |
19852a2a | 768 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
769 | which means that h is really a pointer to an |
770 | elf_vax_link_hash_entry. */ | |
771 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
772 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
773 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
774 | && info->symbolic) |
775 | { | |
776 | struct elf_vax_link_hash_entry *eh; | |
777 | struct elf_vax_pcrel_relocs_copied *p; | |
778 | ||
779 | eh = (struct elf_vax_link_hash_entry *) h; | |
780 | ||
781 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
782 | if (p->section == sreloc) | |
783 | break; | |
784 | ||
785 | if (p == NULL) | |
786 | { | |
787 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
788 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
789 | if (p == NULL) | |
b34976b6 | 790 | return FALSE; |
90ace9e9 JT |
791 | p->next = eh->pcrel_relocs_copied; |
792 | eh->pcrel_relocs_copied = p; | |
793 | p->section = sreloc; | |
794 | p->count = 0; | |
795 | } | |
796 | ||
797 | ++p->count; | |
798 | } | |
799 | } | |
800 | ||
801 | break; | |
802 | ||
803 | /* This relocation describes the C++ object vtable hierarchy. | |
804 | Reconstruct it for later use during GC. */ | |
805 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 806 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 807 | return FALSE; |
90ace9e9 JT |
808 | break; |
809 | ||
810 | /* This relocation describes which C++ vtable entries are actually | |
811 | used. Record for later use during GC. */ | |
812 | case R_VAX_GNU_VTENTRY: | |
d17e0c6e JB |
813 | BFD_ASSERT (h != NULL); |
814 | if (h != NULL | |
815 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 816 | return FALSE; |
90ace9e9 JT |
817 | break; |
818 | ||
819 | default: | |
820 | break; | |
821 | } | |
822 | } | |
823 | ||
b34976b6 | 824 | return TRUE; |
90ace9e9 JT |
825 | } |
826 | ||
827 | /* Return the section that should be marked against GC for a given | |
828 | relocation. */ | |
829 | ||
830 | static asection * | |
ce71b576 | 831 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 832 | struct bfd_link_info *info, |
ce71b576 NC |
833 | Elf_Internal_Rela *rel, |
834 | struct elf_link_hash_entry *h, | |
835 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
836 | { |
837 | if (h != NULL) | |
07adf181 AM |
838 | switch (ELF32_R_TYPE (rel->r_info)) |
839 | { | |
840 | case R_VAX_GNU_VTINHERIT: | |
841 | case R_VAX_GNU_VTENTRY: | |
842 | return NULL; | |
843 | } | |
844 | ||
845 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
846 | } |
847 | ||
848 | /* Update the got entry reference counts for the section being removed. */ | |
849 | ||
b34976b6 | 850 | static bfd_boolean |
ce71b576 NC |
851 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
852 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
853 | { |
854 | Elf_Internal_Shdr *symtab_hdr; | |
855 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 856 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 857 | bfd *dynobj; |
90ace9e9 | 858 | |
7dda2462 TG |
859 | if (info->relocatable) |
860 | return TRUE; | |
861 | ||
90ace9e9 JT |
862 | dynobj = elf_hash_table (info)->dynobj; |
863 | if (dynobj == NULL) | |
b34976b6 | 864 | return TRUE; |
90ace9e9 | 865 | |
babfd660 KH |
866 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
867 | sym_hashes = elf_sym_hashes (abfd); | |
868 | ||
90ace9e9 JT |
869 | relend = relocs + sec->reloc_count; |
870 | for (rel = relocs; rel < relend; rel++) | |
871 | { | |
babfd660 | 872 | unsigned long r_symndx; |
3eb128b2 AM |
873 | struct elf_link_hash_entry *h = NULL; |
874 | ||
875 | r_symndx = ELF32_R_SYM (rel->r_info); | |
876 | if (r_symndx >= symtab_hdr->sh_info) | |
877 | { | |
878 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
879 | while (h->root.type == bfd_link_hash_indirect | |
880 | || h->root.type == bfd_link_hash_warning) | |
881 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
882 | } | |
babfd660 | 883 | |
90ace9e9 JT |
884 | switch (ELF32_R_TYPE (rel->r_info)) |
885 | { | |
886 | case R_VAX_GOT32: | |
3eb128b2 AM |
887 | if (h != NULL && h->got.refcount > 0) |
888 | --h->got.refcount; | |
90ace9e9 JT |
889 | break; |
890 | ||
891 | case R_VAX_PLT32: | |
892 | case R_VAX_PC8: | |
893 | case R_VAX_PC16: | |
894 | case R_VAX_PC32: | |
895 | case R_VAX_8: | |
896 | case R_VAX_16: | |
897 | case R_VAX_32: | |
3eb128b2 AM |
898 | if (h != NULL && h->plt.refcount > 0) |
899 | --h->plt.refcount; | |
90ace9e9 JT |
900 | break; |
901 | ||
902 | default: | |
903 | break; | |
904 | } | |
905 | } | |
906 | ||
b34976b6 | 907 | return TRUE; |
90ace9e9 JT |
908 | } |
909 | ||
910 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
911 | regular object. The current definition is in some section of the | |
912 | dynamic object, but we're not including those sections. We have to | |
913 | change the definition to something the rest of the link can | |
914 | understand. */ | |
915 | ||
b34976b6 | 916 | static bfd_boolean |
90ace9e9 JT |
917 | elf_vax_adjust_dynamic_symbol (info, h) |
918 | struct bfd_link_info *info; | |
919 | struct elf_link_hash_entry *h; | |
920 | { | |
921 | bfd *dynobj; | |
922 | asection *s; | |
90ace9e9 JT |
923 | |
924 | dynobj = elf_hash_table (info)->dynobj; | |
925 | ||
926 | /* Make sure we know what is going on here. */ | |
927 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 928 | && (h->needs_plt |
f6e332e6 | 929 | || h->u.weakdef != NULL |
f5385ebf AM |
930 | || (h->def_dynamic |
931 | && h->ref_regular | |
932 | && !h->def_regular))); | |
90ace9e9 JT |
933 | |
934 | /* If this is a function, put it in the procedure linkage table. We | |
935 | will fill in the contents of the procedure linkage table later, | |
936 | when we know the address of the .got section. */ | |
937 | if (h->type == STT_FUNC | |
f5385ebf | 938 | || h->needs_plt) |
90ace9e9 | 939 | { |
a22a8039 MR |
940 | if (h->plt.refcount <= 0 |
941 | || SYMBOL_CALLS_LOCAL (info, h) | |
942 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
943 | && h->root.type == bfd_link_hash_undefweak)) | |
90ace9e9 JT |
944 | { |
945 | /* This case can occur if we saw a PLTxx reloc in an input | |
946 | file, but the symbol was never referred to by a dynamic | |
a22a8039 MR |
947 | object, or if all references were garbage collected. In |
948 | such a case, we don't actually need to build a procedure | |
949 | linkage table, and we can just do a PCxx reloc instead. */ | |
90ace9e9 | 950 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 951 | h->needs_plt = 0; |
b34976b6 | 952 | return TRUE; |
90ace9e9 JT |
953 | } |
954 | ||
3d4d4302 | 955 | s = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
956 | BFD_ASSERT (s != NULL); |
957 | ||
958 | /* If this is the first .plt entry, make room for the special | |
959 | first entry. */ | |
eea6121a | 960 | if (s->size == 0) |
90ace9e9 | 961 | { |
eea6121a | 962 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
963 | } |
964 | ||
965 | /* If this symbol is not defined in a regular file, and we are | |
966 | not generating a shared library, then set the symbol to this | |
967 | location in the .plt. This is required to make function | |
968 | pointers compare as equal between the normal executable and | |
969 | the shared library. */ | |
970 | if (!info->shared | |
f5385ebf | 971 | && !h->def_regular) |
90ace9e9 JT |
972 | { |
973 | h->root.u.def.section = s; | |
eea6121a | 974 | h->root.u.def.value = s->size; |
90ace9e9 JT |
975 | } |
976 | ||
eea6121a | 977 | h->plt.offset = s->size; |
90ace9e9 JT |
978 | |
979 | /* Make room for this entry. */ | |
eea6121a | 980 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
981 | |
982 | /* We also need to make an entry in the .got.plt section, which | |
983 | will be placed in the .got section by the linker script. */ | |
984 | ||
3d4d4302 | 985 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
90ace9e9 | 986 | BFD_ASSERT (s != NULL); |
eea6121a | 987 | s->size += 4; |
90ace9e9 JT |
988 | |
989 | /* We also need to make an entry in the .rela.plt section. */ | |
990 | ||
3d4d4302 | 991 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
90ace9e9 | 992 | BFD_ASSERT (s != NULL); |
eea6121a | 993 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 994 | |
b34976b6 | 995 | return TRUE; |
90ace9e9 JT |
996 | } |
997 | ||
998 | /* Reinitialize the plt offset now that it is not used as a reference | |
999 | count any more. */ | |
1000 | h->plt.offset = (bfd_vma) -1; | |
1001 | ||
1002 | /* If this is a weak symbol, and there is a real definition, the | |
1003 | processor independent code will have arranged for us to see the | |
1004 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1005 | if (h->u.weakdef != NULL) |
90ace9e9 | 1006 | { |
f6e332e6 AM |
1007 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1008 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1009 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1010 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1011 | return TRUE; |
90ace9e9 JT |
1012 | } |
1013 | ||
1014 | /* This is a reference to a symbol defined by a dynamic object which | |
1015 | is not a function. */ | |
1016 | ||
1017 | /* If we are creating a shared library, we must presume that the | |
1018 | only references to the symbol are via the global offset table. | |
1019 | For such cases we need not do anything here; the relocations will | |
1020 | be handled correctly by relocate_section. */ | |
1021 | if (info->shared) | |
b34976b6 | 1022 | return TRUE; |
90ace9e9 JT |
1023 | |
1024 | /* We must allocate the symbol in our .dynbss section, which will | |
1025 | become part of the .bss section of the executable. There will be | |
1026 | an entry for this symbol in the .dynsym section. The dynamic | |
1027 | object will contain position independent code, so all references | |
1028 | from the dynamic object to this symbol will go through the global | |
1029 | offset table. The dynamic linker will use the .dynsym entry to | |
1030 | determine the address it must put in the global offset table, so | |
1031 | both the dynamic object and the regular object will refer to the | |
1032 | same memory location for the variable. */ | |
1033 | ||
3d4d4302 | 1034 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
90ace9e9 JT |
1035 | BFD_ASSERT (s != NULL); |
1036 | ||
1037 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1038 | copy the initial value out of the dynamic object and into the | |
1039 | runtime process image. We need to remember the offset into the | |
1040 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 1041 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
90ace9e9 JT |
1042 | { |
1043 | asection *srel; | |
1044 | ||
3d4d4302 | 1045 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
90ace9e9 | 1046 | BFD_ASSERT (srel != NULL); |
eea6121a | 1047 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1048 | h->needs_copy = 1; |
90ace9e9 JT |
1049 | } |
1050 | ||
027297b7 | 1051 | return _bfd_elf_adjust_dynamic_copy (h, s); |
90ace9e9 JT |
1052 | } |
1053 | ||
1054 | /* Set the sizes of the dynamic sections. */ | |
1055 | ||
b34976b6 | 1056 | static bfd_boolean |
ce71b576 | 1057 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1058 | { |
1059 | bfd *dynobj; | |
1060 | asection *s; | |
b34976b6 AM |
1061 | bfd_boolean plt; |
1062 | bfd_boolean relocs; | |
1063 | bfd_boolean reltext; | |
90ace9e9 JT |
1064 | |
1065 | dynobj = elf_hash_table (info)->dynobj; | |
1066 | BFD_ASSERT (dynobj != NULL); | |
1067 | ||
1068 | if (elf_hash_table (info)->dynamic_sections_created) | |
1069 | { | |
1070 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1071 | if (info->executable) |
90ace9e9 | 1072 | { |
3d4d4302 | 1073 | s = bfd_get_linker_section (dynobj, ".interp"); |
90ace9e9 | 1074 | BFD_ASSERT (s != NULL); |
eea6121a | 1075 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1076 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1077 | } | |
1078 | } | |
1079 | else | |
1080 | { | |
1081 | /* We may have created entries in the .rela.got and .got sections. | |
1082 | However, if we are not creating the dynamic sections, we will | |
1083 | not actually use these entries. Reset the size of .rela.got | |
1084 | and .got, which will cause it to get stripped from the output | |
1085 | file below. */ | |
3d4d4302 | 1086 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
90ace9e9 | 1087 | if (s != NULL) |
eea6121a | 1088 | s->size = 0; |
3d4d4302 | 1089 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
90ace9e9 | 1090 | if (s != NULL) |
eea6121a | 1091 | s->size = 0; |
3d4d4302 | 1092 | s = bfd_get_linker_section (dynobj, ".got"); |
90ace9e9 | 1093 | if (s != NULL) |
eea6121a | 1094 | s->size = 0; |
90ace9e9 JT |
1095 | } |
1096 | ||
1097 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1098 | relative relocs against symbols defined in a regular object. We | |
1099 | allocated space for them in the check_relocs routine, but we will not | |
1100 | fill them in in the relocate_section routine. */ | |
1101 | if (info->shared && info->symbolic) | |
4dfe6ac6 | 1102 | elf_vax_link_hash_traverse (elf_hash_table (info), |
b29635ba | 1103 | elf_vax_discard_copies, |
ce71b576 | 1104 | NULL); |
b29635ba | 1105 | |
b34976b6 | 1106 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1107 | discard all the got entries we've recorded. Otherwise, we need to |
1108 | instantiate (allocate space for them). */ | |
1109 | elf_link_hash_traverse (elf_hash_table (info), | |
1110 | elf_vax_instantiate_got_entries, | |
2c3fc389 | 1111 | info); |
90ace9e9 JT |
1112 | |
1113 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1114 | determined the sizes of the various dynamic sections. Allocate | |
1115 | memory for them. */ | |
b34976b6 AM |
1116 | plt = FALSE; |
1117 | relocs = FALSE; | |
1118 | reltext = FALSE; | |
90ace9e9 JT |
1119 | for (s = dynobj->sections; s != NULL; s = s->next) |
1120 | { | |
1121 | const char *name; | |
90ace9e9 JT |
1122 | |
1123 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1124 | continue; | |
1125 | ||
1126 | /* It's OK to base decisions on the section name, because none | |
1127 | of the dynobj section names depend upon the input files. */ | |
1128 | name = bfd_get_section_name (dynobj, s); | |
1129 | ||
90ace9e9 JT |
1130 | if (strcmp (name, ".plt") == 0) |
1131 | { | |
c456f082 AM |
1132 | /* Remember whether there is a PLT. */ |
1133 | plt = s->size != 0; | |
90ace9e9 | 1134 | } |
0112cd26 | 1135 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1136 | { |
c456f082 | 1137 | if (s->size != 0) |
90ace9e9 JT |
1138 | { |
1139 | asection *target; | |
1140 | ||
1141 | /* Remember whether there are any reloc sections other | |
1142 | than .rela.plt. */ | |
1143 | if (strcmp (name, ".rela.plt") != 0) | |
1144 | { | |
1145 | const char *outname; | |
1146 | ||
b34976b6 | 1147 | relocs = TRUE; |
90ace9e9 JT |
1148 | |
1149 | /* If this relocation section applies to a read only | |
1150 | section, then we probably need a DT_TEXTREL | |
1151 | entry. .rela.plt is actually associated with | |
1152 | .got.plt, which is never readonly. */ | |
1153 | outname = bfd_get_section_name (output_bfd, | |
1154 | s->output_section); | |
1155 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1156 | if (target != NULL | |
1157 | && (target->flags & SEC_READONLY) != 0 | |
1158 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1159 | reltext = TRUE; |
90ace9e9 JT |
1160 | } |
1161 | ||
1162 | /* We use the reloc_count field as a counter if we need | |
1163 | to copy relocs into the output file. */ | |
1164 | s->reloc_count = 0; | |
1165 | } | |
1166 | } | |
0112cd26 | 1167 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1168 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1169 | { |
1170 | /* It's not one of our sections, so don't allocate space. */ | |
1171 | continue; | |
1172 | } | |
1173 | ||
c456f082 | 1174 | if (s->size == 0) |
90ace9e9 | 1175 | { |
c456f082 AM |
1176 | /* If we don't need this section, strip it from the |
1177 | output file. This is mostly to handle .rela.bss and | |
1178 | .rela.plt. We must create both sections in | |
1179 | create_dynamic_sections, because they must be created | |
1180 | before the linker maps input sections to output | |
1181 | sections. The linker does that before | |
1182 | adjust_dynamic_symbol is called, and it is that | |
1183 | function which decides whether anything needs to go | |
1184 | into these sections. */ | |
8423293d | 1185 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1186 | continue; |
1187 | } | |
1188 | ||
c456f082 AM |
1189 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1190 | continue; | |
1191 | ||
90ace9e9 | 1192 | /* Allocate memory for the section contents. */ |
eea6121a | 1193 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1194 | if (s->contents == NULL) |
b34976b6 | 1195 | return FALSE; |
90ace9e9 JT |
1196 | } |
1197 | ||
1198 | if (elf_hash_table (info)->dynamic_sections_created) | |
1199 | { | |
1200 | /* Add some entries to the .dynamic section. We fill in the | |
1201 | values later, in elf_vax_finish_dynamic_sections, but we | |
1202 | must add the entries now so that we get the correct size for | |
1203 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1204 | dynamic linker and used by the debugger. */ | |
1205 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1206 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1207 | |
1208 | if (!info->shared) | |
1209 | { | |
1210 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1211 | return FALSE; |
90ace9e9 JT |
1212 | } |
1213 | ||
1214 | if (plt) | |
1215 | { | |
1216 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1217 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1218 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1219 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1220 | return FALSE; |
90ace9e9 JT |
1221 | } |
1222 | ||
1223 | if (relocs) | |
1224 | { | |
1225 | if (!add_dynamic_entry (DT_RELA, 0) | |
1226 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1227 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1228 | return FALSE; |
90ace9e9 JT |
1229 | } |
1230 | ||
1231 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1232 | { | |
1233 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1234 | return FALSE; |
90ace9e9 JT |
1235 | } |
1236 | } | |
1237 | #undef add_dynamic_entry | |
1238 | ||
b34976b6 | 1239 | return TRUE; |
90ace9e9 JT |
1240 | } |
1241 | ||
1242 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1243 | creating a shared object with -Bsymbolic. It discards the space | |
1244 | allocated to copy PC relative relocs against symbols which are defined | |
1245 | in regular objects. We allocated space for them in the check_relocs | |
1246 | routine, but we won't fill them in in the relocate_section routine. */ | |
1247 | ||
b34976b6 | 1248 | static bfd_boolean |
ce71b576 | 1249 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
2c3fc389 | 1250 | void * ignore ATTRIBUTE_UNUSED) |
90ace9e9 JT |
1251 | { |
1252 | struct elf_vax_pcrel_relocs_copied *s; | |
1253 | ||
90ace9e9 | 1254 | /* We only discard relocs for symbols defined in a regular object. */ |
f5385ebf | 1255 | if (!h->root.def_regular) |
b34976b6 | 1256 | return TRUE; |
90ace9e9 JT |
1257 | |
1258 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1259 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1260 | |
b34976b6 | 1261 | return TRUE; |
90ace9e9 JT |
1262 | } |
1263 | ||
b29635ba JT |
1264 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1265 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1266 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1267 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1268 | creating a shared object or executable, space in the .got and .rela.got | |
1269 | will be reserved for the symbol. */ | |
1270 | ||
b34976b6 | 1271 | static bfd_boolean |
2c3fc389 | 1272 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, void * infoptr) |
b29635ba JT |
1273 | { |
1274 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1275 | bfd *dynobj; | |
1276 | asection *sgot; | |
1277 | asection *srelgot; | |
b34976b6 | 1278 | |
b29635ba JT |
1279 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1280 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1281 | return TRUE; |
b29635ba JT |
1282 | |
1283 | dynobj = elf_hash_table (info)->dynobj; | |
1284 | if (dynobj == NULL) | |
b34976b6 | 1285 | return TRUE; |
b29635ba | 1286 | |
3d4d4302 AM |
1287 | sgot = bfd_get_linker_section (dynobj, ".got"); |
1288 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
b29635ba JT |
1289 | |
1290 | if (!elf_hash_table (info)->dynamic_sections_created | |
fe723c87 MT |
1291 | || (info->shared && info->symbolic) |
1292 | || h->forced_local) | |
b29635ba JT |
1293 | { |
1294 | h->got.refcount = 0; | |
1295 | h->got.offset = (bfd_vma) -1; | |
1296 | h->plt.refcount = 0; | |
1297 | h->plt.offset = (bfd_vma) -1; | |
1298 | } | |
1299 | else if (h->got.refcount > 0) | |
1300 | { | |
886815b2 MR |
1301 | bfd_boolean dyn; |
1302 | ||
b29635ba JT |
1303 | /* Make sure this symbol is output as a dynamic symbol. */ |
1304 | if (h->dynindx == -1) | |
1305 | { | |
c152c796 | 1306 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1307 | return FALSE; |
b29635ba JT |
1308 | } |
1309 | ||
886815b2 | 1310 | dyn = elf_hash_table (info)->dynamic_sections_created; |
b29635ba | 1311 | /* Allocate space in the .got and .rela.got sections. */ |
886815b2 MR |
1312 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1313 | && (info->shared | |
1314 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
1315 | { | |
1316 | sgot->size += 4; | |
1317 | srelgot->size += sizeof (Elf32_External_Rela); | |
1318 | } | |
b29635ba JT |
1319 | } |
1320 | ||
b34976b6 | 1321 | return TRUE; |
b29635ba JT |
1322 | } |
1323 | ||
90ace9e9 JT |
1324 | /* Relocate an VAX ELF section. */ |
1325 | ||
b34976b6 | 1326 | static bfd_boolean |
ce71b576 NC |
1327 | elf_vax_relocate_section (bfd *output_bfd, |
1328 | struct bfd_link_info *info, | |
1329 | bfd *input_bfd, | |
1330 | asection *input_section, | |
1331 | bfd_byte *contents, | |
1332 | Elf_Internal_Rela *relocs, | |
1333 | Elf_Internal_Sym *local_syms, | |
1334 | asection **local_sections) | |
90ace9e9 JT |
1335 | { |
1336 | bfd *dynobj; | |
1337 | Elf_Internal_Shdr *symtab_hdr; | |
1338 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
1339 | bfd_vma plt_index; |
1340 | bfd_vma got_offset; | |
1341 | asection *sgot; | |
1342 | asection *splt; | |
1343 | asection *sgotplt; | |
1344 | asection *sreloc; | |
1345 | Elf_Internal_Rela *rel; | |
1346 | Elf_Internal_Rela *relend; | |
1347 | ||
1348 | dynobj = elf_hash_table (info)->dynobj; | |
1349 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1350 | sym_hashes = elf_sym_hashes (input_bfd); | |
90ace9e9 JT |
1351 | |
1352 | sgot = NULL; | |
1353 | splt = NULL; | |
1354 | sgotplt = NULL; | |
1355 | sreloc = NULL; | |
1356 | ||
1357 | rel = relocs; | |
1358 | relend = relocs + input_section->reloc_count; | |
1359 | for (; rel < relend; rel++) | |
1360 | { | |
1361 | int r_type; | |
1362 | reloc_howto_type *howto; | |
1363 | unsigned long r_symndx; | |
1364 | struct elf_link_hash_entry *h; | |
1365 | Elf_Internal_Sym *sym; | |
1366 | asection *sec; | |
1367 | bfd_vma relocation; | |
1368 | bfd_reloc_status_type r; | |
1369 | ||
1370 | r_type = ELF32_R_TYPE (rel->r_info); | |
1371 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1372 | { | |
1373 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1374 | return FALSE; |
90ace9e9 JT |
1375 | } |
1376 | howto = howto_table + r_type; | |
1377 | ||
f0fe0e16 | 1378 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1379 | h = NULL; |
1380 | sym = NULL; | |
1381 | sec = NULL; | |
1382 | if (r_symndx < symtab_hdr->sh_info) | |
1383 | { | |
1384 | sym = local_syms + r_symndx; | |
1385 | sec = local_sections[r_symndx]; | |
8517fae7 | 1386 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1387 | } |
1388 | else | |
1389 | { | |
560e09e9 NC |
1390 | bfd_boolean unresolved_reloc; |
1391 | bfd_boolean warned; | |
1392 | ||
b2a8e766 AM |
1393 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1394 | r_symndx, symtab_hdr, sym_hashes, | |
1395 | h, sec, relocation, | |
1396 | unresolved_reloc, warned); | |
ce71b576 | 1397 | |
560e09e9 | 1398 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1399 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1400 | && ((r_type == R_VAX_PLT32 |
90ace9e9 | 1401 | && h->plt.offset != (bfd_vma) -1 |
fe723c87 | 1402 | && !h->forced_local |
90ace9e9 JT |
1403 | && elf_hash_table (info)->dynamic_sections_created) |
1404 | || (r_type == R_VAX_GOT32 | |
fe723c87 MT |
1405 | && h->got.offset != (bfd_vma) -1 |
1406 | && !h->forced_local | |
90ace9e9 JT |
1407 | && elf_hash_table (info)->dynamic_sections_created |
1408 | && (! info->shared | |
1409 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1410 | || !h->def_regular)) |
90ace9e9 JT |
1411 | || (info->shared |
1412 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1413 | || !h->def_regular) |
90ace9e9 JT |
1414 | && ((input_section->flags & SEC_ALLOC) != 0 |
1415 | /* DWARF will emit R_VAX_32 relocations in its | |
1416 | sections against symbols defined externally | |
1417 | in shared libraries. We can't do anything | |
1418 | with them here. */ | |
1419 | ||
1420 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1421 | && h->def_dynamic)) |
90ace9e9 JT |
1422 | && (r_type == R_VAX_8 |
1423 | || r_type == R_VAX_16 | |
fe723c87 | 1424 | || r_type == R_VAX_32)))) |
560e09e9 NC |
1425 | /* In these cases, we don't need the relocation |
1426 | value. We check specially because in some | |
1427 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1428 | relocation = 0; |
90ace9e9 JT |
1429 | } |
1430 | ||
dbaa2011 | 1431 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1432 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1433 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
1434 | |
1435 | if (info->relocatable) | |
1436 | continue; | |
1437 | ||
90ace9e9 JT |
1438 | switch (r_type) |
1439 | { | |
1440 | case R_VAX_GOT32: | |
1441 | /* Relocation is to the address of the entry for this symbol | |
1442 | in the global offset table. */ | |
7b6021f1 MR |
1443 | if (h == NULL |
1444 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1445 | || h->got.offset == (bfd_vma) -1 | |
1446 | || h->forced_local) | |
90ace9e9 JT |
1447 | break; |
1448 | ||
1449 | /* Relocation is the offset of the entry for this symbol in | |
1450 | the global offset table. */ | |
1451 | ||
1452 | { | |
886815b2 | 1453 | bfd_boolean dyn; |
90ace9e9 JT |
1454 | bfd_vma off; |
1455 | ||
90ace9e9 JT |
1456 | if (sgot == NULL) |
1457 | { | |
3d4d4302 | 1458 | sgot = bfd_get_linker_section (dynobj, ".got"); |
90ace9e9 JT |
1459 | BFD_ASSERT (sgot != NULL); |
1460 | } | |
1461 | ||
1462 | BFD_ASSERT (h != NULL); | |
1463 | off = h->got.offset; | |
1464 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1465 | BFD_ASSERT (off < sgot->size); |
90ace9e9 | 1466 | |
886815b2 MR |
1467 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1468 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
1469 | || (info->shared | |
1470 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
90ace9e9 JT |
1471 | { |
1472 | /* The symbol was forced to be local | |
1473 | because of a version file.. We must initialize | |
1474 | this entry in the global offset table. Since | |
1475 | the offset must always be a multiple of 4, we | |
1476 | use the least significant bit to record whether | |
1477 | we have initialized it already. | |
1478 | ||
1479 | When doing a dynamic link, we create a .rela.got | |
1480 | relocation entry to initialize the value. This | |
1481 | is done in the finish_dynamic_symbol routine. */ | |
1482 | if ((off & 1) != 0) | |
1483 | off &= ~1; | |
1484 | else | |
1485 | { | |
1486 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1487 | sgot->contents + off); | |
1488 | h->got.offset |= 1; | |
1489 | } | |
1490 | } else { | |
1491 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1492 | } | |
1493 | ||
1494 | relocation = sgot->output_offset + off; | |
b29635ba | 1495 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1496 | rel->r_addend = 0; |
1497 | ||
b29635ba JT |
1498 | /* Change the reference to be indirect. */ |
1499 | contents[rel->r_offset - 1] |= 0x10; | |
1500 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1501 | } |
1502 | break; | |
1503 | ||
04981bc1 MR |
1504 | case R_VAX_PC32: |
1505 | /* If we are creating an executable and the function this | |
1506 | reloc refers to is in a shared lib, then we made a PLT | |
1507 | entry for this symbol and need to handle the reloc like | |
1508 | a PLT reloc. */ | |
1509 | if (info->shared) | |
1510 | goto r_vax_pc32_shared; | |
1511 | /* Fall through. */ | |
90ace9e9 JT |
1512 | case R_VAX_PLT32: |
1513 | /* Relocation is to the entry for this symbol in the | |
1514 | procedure linkage table. */ | |
1515 | ||
1516 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1517 | without using the procedure linkage table. */ | |
7b6021f1 MR |
1518 | if (h == NULL |
1519 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1520 | || h->forced_local) | |
90ace9e9 JT |
1521 | break; |
1522 | ||
1523 | if (h->plt.offset == (bfd_vma) -1 | |
1524 | || !elf_hash_table (info)->dynamic_sections_created) | |
1525 | { | |
1526 | /* We didn't make a PLT entry for this symbol. This | |
1527 | happens when statically linking PIC code, or when | |
1528 | using -Bsymbolic. */ | |
1529 | break; | |
1530 | } | |
1531 | ||
1532 | if (splt == NULL) | |
1533 | { | |
3d4d4302 | 1534 | splt = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
1535 | BFD_ASSERT (splt != NULL); |
1536 | } | |
1537 | ||
1538 | if (sgotplt == NULL) | |
1539 | { | |
3d4d4302 | 1540 | sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); |
d76b263e | 1541 | BFD_ASSERT (sgotplt != NULL); |
90ace9e9 JT |
1542 | } |
1543 | ||
1544 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1545 | ||
1546 | /* Get the offset into the .got table of the entry that | |
1547 | corresponds to this function. Each .got entry is 4 bytes. | |
1548 | The first two are reserved. */ | |
1549 | got_offset = (plt_index + 3) * 4; | |
1550 | ||
9e86195c | 1551 | /* We want the relocation to point into the .got.plt instead |
cedb70c5 | 1552 | of the plt itself. */ |
90ace9e9 JT |
1553 | relocation = (sgotplt->output_section->vma |
1554 | + sgotplt->output_offset | |
1555 | + got_offset); | |
1556 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1557 | if (rel->r_addend == 2) | |
1558 | { | |
1559 | h->plt.offset |= 1; | |
1560 | } | |
1561 | else if (rel->r_addend != 0) | |
1562 | (*_bfd_error_handler) | |
1563 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1564 | bfd_get_filename (input_bfd), rel->r_addend, | |
1565 | h->root.root.string, | |
1566 | bfd_get_section_name (input_bfd, input_section)); | |
1567 | rel->r_addend = 0; | |
1568 | ||
1569 | break; | |
1570 | ||
1571 | case R_VAX_PC8: | |
1572 | case R_VAX_PC16: | |
04981bc1 | 1573 | r_vax_pc32_shared: |
7b6021f1 MR |
1574 | if (h == NULL |
1575 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1576 | || h->forced_local) | |
90ace9e9 JT |
1577 | break; |
1578 | /* Fall through. */ | |
1579 | case R_VAX_8: | |
1580 | case R_VAX_16: | |
1581 | case R_VAX_32: | |
1582 | if (info->shared | |
cf35638d | 1583 | && r_symndx != STN_UNDEF |
90ace9e9 JT |
1584 | && (input_section->flags & SEC_ALLOC) != 0 |
1585 | && ((r_type != R_VAX_PC8 | |
1586 | && r_type != R_VAX_PC16 | |
1587 | && r_type != R_VAX_PC32) | |
da6bcfca MT |
1588 | || ((input_section->flags & SEC_CODE) |
1589 | && (!info->symbolic | |
1590 | || (!h->def_regular && h->type != STT_SECTION))))) | |
90ace9e9 JT |
1591 | { |
1592 | Elf_Internal_Rela outrel; | |
947216bf | 1593 | bfd_byte *loc; |
b34976b6 | 1594 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1595 | |
1596 | /* When generating a shared object, these relocations | |
1597 | are copied into the output file to be resolved at run | |
1598 | time. */ | |
90ace9e9 JT |
1599 | if (sreloc == NULL) |
1600 | { | |
83bac4b0 NC |
1601 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1602 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1603 | if (sreloc == NULL) | |
b34976b6 | 1604 | return FALSE; |
90ace9e9 JT |
1605 | } |
1606 | ||
b34976b6 AM |
1607 | skip = FALSE; |
1608 | relocate = FALSE; | |
90ace9e9 JT |
1609 | |
1610 | outrel.r_offset = | |
1611 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1612 | rel->r_offset); | |
1613 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1614 | skip = TRUE; |
90ace9e9 | 1615 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1616 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1617 | outrel.r_offset += (input_section->output_section->vma |
1618 | + input_section->output_offset); | |
1619 | ||
1620 | if (skip) | |
1621 | memset (&outrel, 0, sizeof outrel); | |
1622 | /* h->dynindx may be -1 if the symbol was marked to | |
1623 | become local. */ | |
1624 | else if (h != NULL | |
1625 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1626 | || !h->def_regular)) |
90ace9e9 JT |
1627 | { |
1628 | BFD_ASSERT (h->dynindx != -1); | |
1629 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1630 | outrel.r_addend = relocation + rel->r_addend; | |
1631 | } | |
1632 | else | |
1633 | { | |
1634 | if (r_type == R_VAX_32) | |
1635 | { | |
b34976b6 | 1636 | relocate = TRUE; |
90ace9e9 JT |
1637 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1638 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1639 | &contents[rel->r_offset]) == 0); | |
1640 | outrel.r_addend = relocation + rel->r_addend; | |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | long indx; | |
1645 | ||
8517fae7 | 1646 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1647 | indx = 0; |
1648 | else if (sec == NULL || sec->owner == NULL) | |
1649 | { | |
1650 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1651 | return FALSE; |
90ace9e9 JT |
1652 | } |
1653 | else | |
1654 | { | |
1655 | asection *osec; | |
1656 | ||
74541ad4 AM |
1657 | /* We are turning this relocation into one |
1658 | against a section symbol. It would be | |
1659 | proper to subtract the symbol's value, | |
1660 | osec->vma, from the emitted reloc addend, | |
1661 | but ld.so expects buggy relocs. */ | |
90ace9e9 JT |
1662 | osec = sec->output_section; |
1663 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1664 | if (indx == 0) |
1665 | { | |
1666 | struct elf_link_hash_table *htab; | |
1667 | htab = elf_hash_table (info); | |
1668 | osec = htab->text_index_section; | |
1669 | indx = elf_section_data (osec)->dynindx; | |
1670 | } | |
1671 | BFD_ASSERT (indx != 0); | |
90ace9e9 JT |
1672 | } |
1673 | ||
1674 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1675 | outrel.r_addend = relocation + rel->r_addend; | |
1676 | } | |
1677 | } | |
1678 | ||
ddd74d3c | 1679 | if ((input_section->flags & SEC_CODE) != 0 |
751c1fe7 | 1680 | || (ELF32_R_TYPE (outrel.r_info) != R_VAX_32 |
ddd74d3c MR |
1681 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_RELATIVE |
1682 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_COPY | |
1683 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_JMP_SLOT | |
1684 | && ELF32_R_TYPE (outrel.r_info) != R_VAX_GLOB_DAT)) | |
90ace9e9 JT |
1685 | { |
1686 | if (h != NULL) | |
1687 | (*_bfd_error_handler) | |
1688 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1689 | bfd_get_filename (input_bfd), howto->name, | |
1690 | h->root.root.string, | |
1691 | bfd_get_section_name (input_bfd, input_section)); | |
1692 | else | |
1693 | (*_bfd_error_handler) | |
1694 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1695 | bfd_get_filename (input_bfd), howto->name, | |
1696 | outrel.r_addend, | |
1697 | bfd_get_section_name (input_bfd, input_section)); | |
1698 | } | |
947216bf AM |
1699 | loc = sreloc->contents; |
1700 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1701 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1702 | |
1703 | /* This reloc will be computed at runtime, so there's no | |
1704 | need to do anything now, except for R_VAX_32 | |
1705 | relocations that have been turned into | |
1706 | R_VAX_RELATIVE. */ | |
1707 | if (!relocate) | |
1708 | continue; | |
1709 | } | |
1710 | ||
1711 | break; | |
1712 | ||
1713 | case R_VAX_GNU_VTINHERIT: | |
1714 | case R_VAX_GNU_VTENTRY: | |
1715 | /* These are no-ops in the end. */ | |
1716 | continue; | |
1717 | ||
1718 | default: | |
1719 | break; | |
1720 | } | |
1721 | ||
b34976b6 | 1722 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1723 | So subtract the difference from the relocation amount since we can't |
1724 | add it to the offset. */ | |
90ace9e9 | 1725 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1726 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1727 | |
1728 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1729 | contents, rel->r_offset, | |
1730 | relocation, rel->r_addend); | |
1731 | ||
1732 | if (r != bfd_reloc_ok) | |
1733 | { | |
1734 | switch (r) | |
1735 | { | |
1736 | default: | |
1737 | case bfd_reloc_outofrange: | |
1738 | abort (); | |
1739 | case bfd_reloc_overflow: | |
1740 | { | |
1741 | const char *name; | |
1742 | ||
1743 | if (h != NULL) | |
dfeffb9f | 1744 | name = NULL; |
90ace9e9 JT |
1745 | else |
1746 | { | |
1747 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1748 | symtab_hdr->sh_link, | |
1749 | sym->st_name); | |
1750 | if (name == NULL) | |
b34976b6 | 1751 | return FALSE; |
90ace9e9 JT |
1752 | if (*name == '\0') |
1753 | name = bfd_section_name (input_bfd, sec); | |
1754 | } | |
1755 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1756 | (info, (h ? &h->root : NULL), name, howto->name, |
1757 | (bfd_vma) 0, input_bfd, input_section, | |
1758 | rel->r_offset))) | |
b34976b6 | 1759 | return FALSE; |
90ace9e9 JT |
1760 | } |
1761 | break; | |
1762 | } | |
1763 | } | |
1764 | } | |
1765 | ||
b34976b6 | 1766 | return TRUE; |
90ace9e9 JT |
1767 | } |
1768 | ||
1769 | /* Finish up dynamic symbol handling. We set the contents of various | |
1770 | dynamic sections here. */ | |
1771 | ||
b34976b6 | 1772 | static bfd_boolean |
ce71b576 NC |
1773 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1774 | struct elf_link_hash_entry *h, | |
1775 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1776 | { |
1777 | bfd *dynobj; | |
1778 | ||
1779 | dynobj = elf_hash_table (info)->dynobj; | |
1780 | ||
1781 | if (h->plt.offset != (bfd_vma) -1) | |
1782 | { | |
1783 | asection *splt; | |
1784 | asection *sgot; | |
1785 | asection *srela; | |
1786 | bfd_vma plt_index; | |
1787 | bfd_vma got_offset; | |
1788 | bfd_vma addend; | |
1789 | Elf_Internal_Rela rela; | |
947216bf | 1790 | bfd_byte *loc; |
90ace9e9 JT |
1791 | |
1792 | /* This symbol has an entry in the procedure linkage table. Set | |
1793 | it up. */ | |
90ace9e9 JT |
1794 | BFD_ASSERT (h->dynindx != -1); |
1795 | ||
3d4d4302 AM |
1796 | splt = bfd_get_linker_section (dynobj, ".plt"); |
1797 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); | |
1798 | srela = bfd_get_linker_section (dynobj, ".rela.plt"); | |
90ace9e9 JT |
1799 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
1800 | ||
1801 | addend = 2 * (h->plt.offset & 1); | |
1802 | h->plt.offset &= ~1; | |
1803 | ||
1804 | /* Get the index in the procedure linkage table which | |
1805 | corresponds to this symbol. This is the index of this symbol | |
1806 | in all the symbols for which we are making plt entries. The | |
1807 | first entry in the procedure linkage table is reserved. */ | |
1808 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1809 | ||
1810 | /* Get the offset into the .got table of the entry that | |
1811 | corresponds to this function. Each .got entry is 4 bytes. | |
1812 | The first two are reserved. */ | |
1813 | got_offset = (plt_index + 3) * 4; | |
1814 | ||
1815 | /* Fill in the entry in the procedure linkage table. */ | |
1816 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1817 | PLT_ENTRY_SIZE); | |
1818 | ||
1819 | /* The offset is relative to the first extension word. */ | |
1820 | bfd_put_32 (output_bfd, | |
1821 | -(h->plt.offset + 8), | |
1822 | splt->contents + h->plt.offset + 4); | |
1823 | ||
1824 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1825 | splt->contents + h->plt.offset + 8); | |
1826 | ||
1827 | /* Fill in the entry in the global offset table. */ | |
1828 | bfd_put_32 (output_bfd, | |
1829 | (splt->output_section->vma | |
1830 | + splt->output_offset | |
1831 | + h->plt.offset) + addend, | |
1832 | sgot->contents + got_offset); | |
1833 | ||
1834 | /* Fill in the entry in the .rela.plt section. */ | |
1835 | rela.r_offset = (sgot->output_section->vma | |
1836 | + sgot->output_offset | |
1837 | + got_offset); | |
1838 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1839 | rela.r_addend = addend; | |
947216bf AM |
1840 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1841 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1842 | |
f5385ebf | 1843 | if (!h->def_regular) |
90ace9e9 JT |
1844 | { |
1845 | /* Mark the symbol as undefined, rather than as defined in | |
1846 | the .plt section. Leave the value alone. */ | |
1847 | sym->st_shndx = SHN_UNDEF; | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | if (h->got.offset != (bfd_vma) -1) | |
1852 | { | |
1853 | asection *sgot; | |
1854 | asection *srela; | |
1855 | Elf_Internal_Rela rela; | |
947216bf | 1856 | bfd_byte *loc; |
90ace9e9 JT |
1857 | |
1858 | /* This symbol has an entry in the global offset table. Set it | |
1859 | up. */ | |
3d4d4302 AM |
1860 | sgot = bfd_get_linker_section (dynobj, ".got"); |
1861 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
90ace9e9 JT |
1862 | BFD_ASSERT (sgot != NULL && srela != NULL); |
1863 | ||
1864 | rela.r_offset = (sgot->output_section->vma | |
1865 | + sgot->output_offset | |
1866 | + (h->got.offset &~ 1)); | |
1867 | ||
1868 | /* If the symbol was forced to be local because of a version file | |
1869 | locally we just want to emit a RELATIVE reloc. The entry in | |
1870 | the global offset table will already have been initialized in | |
1871 | the relocate_section function. */ | |
1872 | if (info->shared | |
1873 | && h->dynindx == -1 | |
f5385ebf | 1874 | && h->def_regular) |
90ace9e9 JT |
1875 | { |
1876 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1881 | } | |
1882 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1883 | (sgot->contents | |
1884 | + (h->got.offset & ~1))); | |
1885 | ||
947216bf AM |
1886 | loc = srela->contents; |
1887 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1888 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1889 | } |
1890 | ||
f5385ebf | 1891 | if (h->needs_copy) |
90ace9e9 JT |
1892 | { |
1893 | asection *s; | |
1894 | Elf_Internal_Rela rela; | |
947216bf | 1895 | bfd_byte *loc; |
90ace9e9 JT |
1896 | |
1897 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1898 | BFD_ASSERT (h->dynindx != -1 |
1899 | && (h->root.type == bfd_link_hash_defined | |
1900 | || h->root.type == bfd_link_hash_defweak)); | |
1901 | ||
3d4d4302 | 1902 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
90ace9e9 JT |
1903 | BFD_ASSERT (s != NULL); |
1904 | ||
1905 | rela.r_offset = (h->root.u.def.value | |
1906 | + h->root.u.def.section->output_section->vma | |
1907 | + h->root.u.def.section->output_offset); | |
1908 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1909 | rela.r_addend = 0; | |
947216bf AM |
1910 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1911 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1912 | } |
1913 | ||
1914 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
9637f6ef | 1915 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 1916 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1917 | sym->st_shndx = SHN_ABS; |
1918 | ||
b34976b6 | 1919 | return TRUE; |
90ace9e9 JT |
1920 | } |
1921 | ||
1922 | /* Finish up the dynamic sections. */ | |
1923 | ||
b34976b6 | 1924 | static bfd_boolean |
ce71b576 | 1925 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1926 | { |
1927 | bfd *dynobj; | |
1928 | asection *sgot; | |
1929 | asection *sdyn; | |
1930 | ||
1931 | dynobj = elf_hash_table (info)->dynobj; | |
1932 | ||
3d4d4302 | 1933 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); |
90ace9e9 | 1934 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 1935 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
90ace9e9 JT |
1936 | |
1937 | if (elf_hash_table (info)->dynamic_sections_created) | |
1938 | { | |
1939 | asection *splt; | |
1940 | Elf32_External_Dyn *dyncon, *dynconend; | |
1941 | ||
3d4d4302 | 1942 | splt = bfd_get_linker_section (dynobj, ".plt"); |
90ace9e9 JT |
1943 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
1944 | ||
1945 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1946 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1947 | for (; dyncon < dynconend; dyncon++) |
1948 | { | |
1949 | Elf_Internal_Dyn dyn; | |
1950 | const char *name; | |
1951 | asection *s; | |
1952 | ||
1953 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1954 | ||
1955 | switch (dyn.d_tag) | |
1956 | { | |
1957 | default: | |
1958 | break; | |
1959 | ||
1960 | case DT_PLTGOT: | |
1961 | name = ".got"; | |
1962 | goto get_vma; | |
1963 | case DT_JMPREL: | |
1964 | name = ".rela.plt"; | |
1965 | get_vma: | |
1966 | s = bfd_get_section_by_name (output_bfd, name); | |
1967 | BFD_ASSERT (s != NULL); | |
1968 | dyn.d_un.d_ptr = s->vma; | |
1969 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1970 | break; | |
1971 | ||
1972 | case DT_PLTRELSZ: | |
1973 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1974 | BFD_ASSERT (s != NULL); | |
eea6121a | 1975 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
1976 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1977 | break; | |
1978 | ||
1979 | case DT_RELASZ: | |
1980 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1981 | not be included in the overall relocs (DT_RELA). | |
1982 | Therefore, we override the DT_RELASZ entry here to | |
1983 | make it not include the JMPREL relocs. Since the | |
1984 | linker script arranges for .rela.plt to follow all | |
1985 | other relocation sections, we don't have to worry | |
1986 | about changing the DT_RELA entry. */ | |
1987 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1988 | if (s != NULL) | |
eea6121a | 1989 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
1990 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1991 | break; | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 1996 | if (splt->size > 0) |
90ace9e9 JT |
1997 | { |
1998 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
1999 | bfd_put_32 (output_bfd, | |
2000 | (sgot->output_section->vma | |
2001 | + sgot->output_offset + 4 | |
2002 | - (splt->output_section->vma + 6)), | |
2003 | splt->contents + 2); | |
2004 | bfd_put_32 (output_bfd, | |
2005 | (sgot->output_section->vma | |
2006 | + sgot->output_offset + 8 | |
2007 | - (splt->output_section->vma + 12)), | |
2008 | splt->contents + 8); | |
cedb70c5 | 2009 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2010 | = PLT_ENTRY_SIZE; |
2011 | } | |
2012 | } | |
2013 | ||
2014 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2015 | if (sgot->size > 0) |
90ace9e9 JT |
2016 | { |
2017 | if (sdyn == NULL) | |
2018 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2019 | else | |
2020 | bfd_put_32 (output_bfd, | |
2021 | sdyn->output_section->vma + sdyn->output_offset, | |
2022 | sgot->contents); | |
2023 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2024 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2025 | } | |
2026 | ||
2027 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2028 | ||
b34976b6 | 2029 | return TRUE; |
90ace9e9 JT |
2030 | } |
2031 | ||
9b90d8fd | 2032 | static enum elf_reloc_type_class |
7e612e98 AM |
2033 | elf_vax_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2034 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2035 | const Elf_Internal_Rela *rela) | |
9b90d8fd MR |
2036 | { |
2037 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2038 | { | |
2039 | case R_VAX_RELATIVE: | |
2040 | return reloc_class_relative; | |
2041 | case R_VAX_JMP_SLOT: | |
2042 | return reloc_class_plt; | |
2043 | case R_VAX_COPY: | |
2044 | return reloc_class_copy; | |
2045 | default: | |
2046 | return reloc_class_normal; | |
2047 | } | |
2048 | } | |
2049 | ||
6db7e006 MR |
2050 | static bfd_vma |
2051 | elf_vax_plt_sym_val (bfd_vma i, const asection *plt, | |
2052 | const arelent *rel ATTRIBUTE_UNUSED) | |
2053 | { | |
2054 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
2055 | } | |
2056 | ||
90ace9e9 JT |
2057 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec |
2058 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2059 | #define ELF_MACHINE_CODE EM_VAX | |
2060 | #define ELF_MAXPAGESIZE 0x1000 | |
2061 | ||
2062 | #define elf_backend_create_dynamic_sections \ | |
2063 | _bfd_elf_create_dynamic_sections | |
2064 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2065 | elf_vax_link_hash_table_create | |
c152c796 | 2066 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2067 | |
2068 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2069 | #define elf_backend_adjust_dynamic_symbol \ | |
2070 | elf_vax_adjust_dynamic_symbol | |
2071 | #define elf_backend_size_dynamic_sections \ | |
2072 | elf_vax_size_dynamic_sections | |
74541ad4 | 2073 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
90ace9e9 JT |
2074 | #define elf_backend_relocate_section elf_vax_relocate_section |
2075 | #define elf_backend_finish_dynamic_symbol \ | |
2076 | elf_vax_finish_dynamic_symbol | |
2077 | #define elf_backend_finish_dynamic_sections \ | |
2078 | elf_vax_finish_dynamic_sections | |
9b90d8fd | 2079 | #define elf_backend_reloc_type_class elf_vax_reloc_type_class |
90ace9e9 JT |
2080 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook |
2081 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
6db7e006 | 2082 | #define elf_backend_plt_sym_val elf_vax_plt_sym_val |
90ace9e9 JT |
2083 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
2084 | elf32_vax_merge_private_bfd_data | |
2085 | #define bfd_elf32_bfd_set_private_flags \ | |
2086 | elf32_vax_set_private_flags | |
2087 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2088 | elf32_vax_print_private_bfd_data | |
2089 | ||
2090 | #define elf_backend_can_gc_sections 1 | |
2091 | #define elf_backend_want_got_plt 1 | |
2092 | #define elf_backend_plt_readonly 1 | |
2093 | #define elf_backend_want_plt_sym 0 | |
2094 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2095 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2096 | |
2097 | #include "elf32-target.h" |