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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, |
83bac4b0 | 3 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
90ace9e9 JT |
4 | Contributed by Matt Thomas <[email protected]>. |
5 | ||
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
90ace9e9 | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 11 | (at your option) any later version. |
90ace9e9 | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
90ace9e9 | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
90ace9e9 | 22 | |
90ace9e9 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
90ace9e9 JT |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf/vax.h" | |
29 | ||
ce71b576 NC |
30 | static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type); |
31 | static void rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *); | |
32 | static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *, | |
33 | struct bfd_hash_table *, | |
34 | const char *); | |
35 | static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *); | |
36 | static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *, | |
37 | asection *, const Elf_Internal_Rela *); | |
ce71b576 NC |
38 | static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *, |
39 | struct elf_link_hash_entry *); | |
40 | static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *); | |
41 | static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *, | |
42 | bfd *, asection *, bfd_byte *, | |
43 | Elf_Internal_Rela *, | |
44 | Elf_Internal_Sym *, asection **); | |
45 | static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *, | |
46 | struct elf_link_hash_entry *, | |
47 | Elf_Internal_Sym *); | |
48 | static bfd_boolean elf_vax_finish_dynamic_sections (bfd *, | |
49 | struct bfd_link_info *); | |
50 | ||
51 | static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword); | |
52 | static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *); | |
53 | static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, PTR); | |
90ace9e9 JT |
54 | |
55 | static reloc_howto_type howto_table[] = { | |
56 | HOWTO (R_VAX_NONE, /* type */ | |
57 | 0, /* rightshift */ | |
58 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
59 | 0, /* bitsize */ | |
b34976b6 | 60 | FALSE, /* pc_relative */ |
90ace9e9 JT |
61 | 0, /* bitpos */ |
62 | complain_overflow_dont, /* complain_on_overflow */ | |
63 | bfd_elf_generic_reloc, /* special_function */ | |
64 | "R_VAX_NONE", /* name */ | |
b34976b6 | 65 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
66 | 0, /* src_mask */ |
67 | 0x00000000, /* dst_mask */ | |
b34976b6 | 68 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
69 | |
70 | HOWTO (R_VAX_32, /* type */ | |
71 | 0, /* rightshift */ | |
72 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
73 | 32, /* bitsize */ | |
b34976b6 | 74 | FALSE, /* pc_relative */ |
90ace9e9 JT |
75 | 0, /* bitpos */ |
76 | complain_overflow_bitfield, /* complain_on_overflow */ | |
77 | bfd_elf_generic_reloc, /* special_function */ | |
78 | "R_VAX_32", /* name */ | |
b34976b6 | 79 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
80 | 0, /* src_mask */ |
81 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 82 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
83 | |
84 | HOWTO (R_VAX_16, /* type */ | |
85 | 0, /* rightshift */ | |
86 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
87 | 16, /* bitsize */ | |
b34976b6 | 88 | FALSE, /* pc_relative */ |
90ace9e9 JT |
89 | 0, /* bitpos */ |
90 | complain_overflow_bitfield, /* complain_on_overflow */ | |
91 | bfd_elf_generic_reloc, /* special_function */ | |
92 | "R_VAX_16", /* name */ | |
b34976b6 | 93 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
94 | 0, /* src_mask */ |
95 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 96 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
97 | |
98 | HOWTO (R_VAX_8, /* type */ | |
99 | 0, /* rightshift */ | |
100 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
101 | 8, /* bitsize */ | |
b34976b6 | 102 | FALSE, /* pc_relative */ |
90ace9e9 JT |
103 | 0, /* bitpos */ |
104 | complain_overflow_bitfield, /* complain_on_overflow */ | |
105 | bfd_elf_generic_reloc, /* special_function */ | |
106 | "R_VAX_8", /* name */ | |
b34976b6 | 107 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
108 | 0, /* src_mask */ |
109 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 110 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
111 | |
112 | HOWTO (R_VAX_PC32, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 32, /* bitsize */ | |
b34976b6 | 116 | TRUE, /* pc_relative */ |
90ace9e9 JT |
117 | 0, /* bitpos */ |
118 | complain_overflow_bitfield, /* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_VAX_PC32", /* name */ | |
b34976b6 | 121 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
122 | 0, /* src_mask */ |
123 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 124 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
125 | |
126 | HOWTO (R_VAX_PC16, /* type */ | |
127 | 0, /* rightshift */ | |
128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
129 | 16, /* bitsize */ | |
b34976b6 | 130 | TRUE, /* pc_relative */ |
90ace9e9 JT |
131 | 0, /* bitpos */ |
132 | complain_overflow_signed, /* complain_on_overflow */ | |
133 | bfd_elf_generic_reloc, /* special_function */ | |
134 | "R_VAX_PC16", /* name */ | |
b34976b6 | 135 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
136 | 0, /* src_mask */ |
137 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 138 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
139 | |
140 | HOWTO (R_VAX_PC8, /* type */ | |
141 | 0, /* rightshift */ | |
142 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
143 | 8, /* bitsize */ | |
b34976b6 | 144 | TRUE, /* pc_relative */ |
90ace9e9 JT |
145 | 0, /* bitpos */ |
146 | complain_overflow_signed, /* complain_on_overflow */ | |
147 | bfd_elf_generic_reloc, /* special_function */ | |
148 | "R_VAX_PC8", /* name */ | |
b34976b6 | 149 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
150 | 0, /* src_mask */ |
151 | 0x000000ff, /* dst_mask */ | |
b34976b6 | 152 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
153 | |
154 | HOWTO (R_VAX_GOT32, /* type */ | |
155 | 0, /* rightshift */ | |
156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 32, /* bitsize */ | |
b34976b6 | 158 | TRUE, /* pc_relative */ |
90ace9e9 JT |
159 | 0, /* bitpos */ |
160 | complain_overflow_bitfield, /* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_VAX_GOT32", /* name */ | |
b34976b6 | 163 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
164 | 0, /* src_mask */ |
165 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 166 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
167 | |
168 | EMPTY_HOWTO (-1), | |
169 | EMPTY_HOWTO (-1), | |
170 | EMPTY_HOWTO (-1), | |
171 | EMPTY_HOWTO (-1), | |
172 | EMPTY_HOWTO (-1), | |
173 | ||
174 | HOWTO (R_VAX_PLT32, /* type */ | |
175 | 0, /* rightshift */ | |
176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
177 | 32, /* bitsize */ | |
b34976b6 | 178 | TRUE, /* pc_relative */ |
90ace9e9 JT |
179 | 0, /* bitpos */ |
180 | complain_overflow_bitfield, /* complain_on_overflow */ | |
181 | bfd_elf_generic_reloc, /* special_function */ | |
182 | "R_VAX_PLT32", /* name */ | |
b34976b6 | 183 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
184 | 0, /* src_mask */ |
185 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 186 | TRUE), /* pcrel_offset */ |
90ace9e9 JT |
187 | |
188 | EMPTY_HOWTO (-1), | |
189 | EMPTY_HOWTO (-1), | |
190 | EMPTY_HOWTO (-1), | |
191 | EMPTY_HOWTO (-1), | |
192 | EMPTY_HOWTO (-1), | |
193 | ||
194 | HOWTO (R_VAX_COPY, /* type */ | |
195 | 0, /* rightshift */ | |
196 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
197 | 0, /* bitsize */ | |
b34976b6 | 198 | FALSE, /* pc_relative */ |
90ace9e9 JT |
199 | 0, /* bitpos */ |
200 | complain_overflow_dont, /* complain_on_overflow */ | |
201 | bfd_elf_generic_reloc, /* special_function */ | |
202 | "R_VAX_COPY", /* name */ | |
b34976b6 | 203 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
204 | 0, /* src_mask */ |
205 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 206 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
207 | |
208 | HOWTO (R_VAX_GLOB_DAT, /* type */ | |
209 | 0, /* rightshift */ | |
210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
211 | 32, /* bitsize */ | |
b34976b6 | 212 | FALSE, /* pc_relative */ |
90ace9e9 JT |
213 | 0, /* bitpos */ |
214 | complain_overflow_dont, /* complain_on_overflow */ | |
215 | bfd_elf_generic_reloc, /* special_function */ | |
216 | "R_VAX_GLOB_DAT", /* name */ | |
b34976b6 | 217 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
218 | 0, /* src_mask */ |
219 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 220 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
221 | |
222 | HOWTO (R_VAX_JMP_SLOT, /* type */ | |
223 | 0, /* rightshift */ | |
224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
225 | 32, /* bitsize */ | |
b34976b6 | 226 | FALSE, /* pc_relative */ |
90ace9e9 JT |
227 | 0, /* bitpos */ |
228 | complain_overflow_dont, /* complain_on_overflow */ | |
229 | bfd_elf_generic_reloc, /* special_function */ | |
230 | "R_VAX_JMP_SLOT", /* name */ | |
b34976b6 | 231 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
232 | 0, /* src_mask */ |
233 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 234 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
235 | |
236 | HOWTO (R_VAX_RELATIVE, /* type */ | |
237 | 0, /* rightshift */ | |
238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
239 | 32, /* bitsize */ | |
b34976b6 | 240 | FALSE, /* pc_relative */ |
90ace9e9 JT |
241 | 0, /* bitpos */ |
242 | complain_overflow_dont, /* complain_on_overflow */ | |
243 | bfd_elf_generic_reloc, /* special_function */ | |
244 | "R_VAX_RELATIVE", /* name */ | |
b34976b6 | 245 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
246 | 0, /* src_mask */ |
247 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 248 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
249 | |
250 | /* GNU extension to record C++ vtable hierarchy */ | |
251 | HOWTO (R_VAX_GNU_VTINHERIT, /* type */ | |
252 | 0, /* rightshift */ | |
253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
254 | 0, /* bitsize */ | |
b34976b6 | 255 | FALSE, /* pc_relative */ |
90ace9e9 JT |
256 | 0, /* bitpos */ |
257 | complain_overflow_dont, /* complain_on_overflow */ | |
258 | NULL, /* special_function */ | |
259 | "R_VAX_GNU_VTINHERIT", /* name */ | |
b34976b6 | 260 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
261 | 0, /* src_mask */ |
262 | 0, /* dst_mask */ | |
b34976b6 | 263 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
264 | |
265 | /* GNU extension to record C++ vtable member usage */ | |
266 | HOWTO (R_VAX_GNU_VTENTRY, /* type */ | |
267 | 0, /* rightshift */ | |
268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
269 | 0, /* bitsize */ | |
b34976b6 | 270 | FALSE, /* pc_relative */ |
90ace9e9 JT |
271 | 0, /* bitpos */ |
272 | complain_overflow_dont, /* complain_on_overflow */ | |
273 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
274 | "R_VAX_GNU_VTENTRY", /* name */ | |
b34976b6 | 275 | FALSE, /* partial_inplace */ |
90ace9e9 JT |
276 | 0, /* src_mask */ |
277 | 0, /* dst_mask */ | |
b34976b6 | 278 | FALSE), /* pcrel_offset */ |
90ace9e9 JT |
279 | }; |
280 | ||
281 | static void | |
ce71b576 NC |
282 | rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
283 | Elf_Internal_Rela *dst) | |
90ace9e9 JT |
284 | { |
285 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max); | |
286 | cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)]; | |
287 | } | |
288 | ||
289 | #define elf_info_to_howto rtype_to_howto | |
290 | ||
291 | static const struct | |
292 | { | |
293 | bfd_reloc_code_real_type bfd_val; | |
294 | int elf_val; | |
295 | } reloc_map[] = { | |
296 | { BFD_RELOC_NONE, R_VAX_NONE }, | |
297 | { BFD_RELOC_32, R_VAX_32 }, | |
298 | { BFD_RELOC_16, R_VAX_16 }, | |
299 | { BFD_RELOC_8, R_VAX_8 }, | |
300 | { BFD_RELOC_32_PCREL, R_VAX_PC32 }, | |
301 | { BFD_RELOC_16_PCREL, R_VAX_PC16 }, | |
302 | { BFD_RELOC_8_PCREL, R_VAX_PC8 }, | |
303 | { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 }, | |
304 | { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 }, | |
305 | { BFD_RELOC_NONE, R_VAX_COPY }, | |
306 | { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT }, | |
307 | { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT }, | |
308 | { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE }, | |
309 | { BFD_RELOC_CTOR, R_VAX_32 }, | |
310 | { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT }, | |
311 | { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY }, | |
312 | }; | |
313 | ||
314 | static reloc_howto_type * | |
ce71b576 | 315 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) |
90ace9e9 JT |
316 | { |
317 | unsigned int i; | |
318 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
319 | { | |
320 | if (reloc_map[i].bfd_val == code) | |
321 | return &howto_table[reloc_map[i].elf_val]; | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | ||
157090f7 AM |
326 | static reloc_howto_type * |
327 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
328 | const char *r_name) | |
329 | { | |
330 | unsigned int i; | |
331 | ||
332 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
333 | if (howto_table[i].name != NULL | |
334 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
335 | return &howto_table[i]; | |
336 | ||
337 | return NULL; | |
338 | } | |
339 | ||
90ace9e9 | 340 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 341 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
90ace9e9 JT |
342 | #define ELF_ARCH bfd_arch_vax |
343 | /* end code generated by elf.el */ | |
90ace9e9 JT |
344 | \f |
345 | /* Functions for the VAX ELF linker. */ | |
346 | ||
347 | /* The name of the dynamic interpreter. This is put in the .interp | |
348 | section. */ | |
349 | ||
350 | #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so" | |
351 | ||
352 | /* The size in bytes of an entry in the procedure linkage table. */ | |
353 | ||
354 | #define PLT_ENTRY_SIZE 12 | |
355 | ||
356 | /* The first entry in a procedure linkage table looks like this. See | |
357 | the SVR4 ABI VAX supplement to see how this works. */ | |
358 | ||
359 | static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] = | |
360 | { | |
361 | 0xdd, 0xef, /* pushl l^ */ | |
362 | 0, 0, 0, 0, /* offset to .plt.got + 4 */ | |
363 | 0x17, 0xff, /* jmp @L^(pc) */ | |
364 | 0, 0, 0, 0, /* offset to .plt.got + 8 */ | |
365 | }; | |
366 | ||
367 | /* Subsequent entries in a procedure linkage table look like this. */ | |
368 | ||
369 | static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] = | |
370 | { | |
6c4fb25a | 371 | 0xfc, 0x0f, /* .word ^M<r11:r2> */ |
90ace9e9 JT |
372 | 0x16, 0xef, /* jsb L^(pc) */ |
373 | 0, 0, 0, 0, /* replaced with offset to start of .plt */ | |
374 | 0, 0, 0, 0, /* index into .rela.plt */ | |
375 | }; | |
376 | ||
377 | /* The VAX linker needs to keep track of the number of relocs that it | |
378 | decides to copy in check_relocs for each symbol. This is so that it | |
379 | can discard PC relative relocs if it doesn't need them when linking | |
380 | with -Bsymbolic. We store the information in a field extending the | |
381 | regular ELF linker hash table. */ | |
382 | ||
383 | /* This structure keeps track of the number of PC relative relocs we have | |
384 | copied for a given symbol. */ | |
385 | ||
386 | struct elf_vax_pcrel_relocs_copied | |
387 | { | |
388 | /* Next section. */ | |
389 | struct elf_vax_pcrel_relocs_copied *next; | |
390 | /* A section in dynobj. */ | |
391 | asection *section; | |
392 | /* Number of relocs copied in this section. */ | |
393 | bfd_size_type count; | |
394 | }; | |
395 | ||
396 | /* VAX ELF linker hash entry. */ | |
397 | ||
398 | struct elf_vax_link_hash_entry | |
399 | { | |
400 | struct elf_link_hash_entry root; | |
401 | ||
402 | /* Number of PC relative relocs copied for this symbol. */ | |
403 | struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied; | |
404 | ||
405 | bfd_vma got_addend; | |
406 | }; | |
407 | ||
408 | /* VAX ELF linker hash table. */ | |
409 | ||
410 | struct elf_vax_link_hash_table | |
411 | { | |
412 | struct elf_link_hash_table root; | |
413 | }; | |
414 | ||
415 | /* Declare this now that the above structures are defined. */ | |
416 | ||
ce71b576 NC |
417 | static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *, |
418 | PTR); | |
90ace9e9 | 419 | |
b29635ba JT |
420 | /* Declare this now that the above structures are defined. */ |
421 | ||
ce71b576 NC |
422 | static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *, |
423 | PTR); | |
b29635ba | 424 | |
90ace9e9 JT |
425 | /* Traverse an VAX ELF linker hash table. */ |
426 | ||
427 | #define elf_vax_link_hash_traverse(table, func, info) \ | |
428 | (elf_link_hash_traverse \ | |
429 | (&(table)->root, \ | |
ce71b576 | 430 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
90ace9e9 JT |
431 | (info))) |
432 | ||
433 | /* Get the VAX ELF linker hash table from a link_info structure. */ | |
434 | ||
ce71b576 | 435 | #define elf_vax_hash_table(p) ((struct elf_vax_link_hash_table *) (p)->hash) |
90ace9e9 JT |
436 | |
437 | /* Create an entry in an VAX ELF linker hash table. */ | |
438 | ||
439 | static struct bfd_hash_entry * | |
ce71b576 NC |
440 | elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry, |
441 | struct bfd_hash_table *table, | |
442 | const char *string) | |
90ace9e9 JT |
443 | { |
444 | struct elf_vax_link_hash_entry *ret = | |
445 | (struct elf_vax_link_hash_entry *) entry; | |
446 | ||
447 | /* Allocate the structure if it has not already been allocated by a | |
448 | subclass. */ | |
ce71b576 | 449 | if (ret == NULL) |
90ace9e9 JT |
450 | ret = ((struct elf_vax_link_hash_entry *) |
451 | bfd_hash_allocate (table, | |
452 | sizeof (struct elf_vax_link_hash_entry))); | |
ce71b576 | 453 | if (ret == NULL) |
90ace9e9 JT |
454 | return (struct bfd_hash_entry *) ret; |
455 | ||
456 | /* Call the allocation method of the superclass. */ | |
457 | ret = ((struct elf_vax_link_hash_entry *) | |
458 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
459 | table, string)); | |
ce71b576 | 460 | if (ret != NULL) |
90ace9e9 JT |
461 | { |
462 | ret->pcrel_relocs_copied = NULL; | |
463 | } | |
464 | ||
465 | return (struct bfd_hash_entry *) ret; | |
466 | } | |
467 | ||
468 | /* Create an VAX ELF linker hash table. */ | |
469 | ||
470 | static struct bfd_link_hash_table * | |
ce71b576 | 471 | elf_vax_link_hash_table_create (bfd *abfd) |
90ace9e9 JT |
472 | { |
473 | struct elf_vax_link_hash_table *ret; | |
474 | bfd_size_type amt = sizeof (struct elf_vax_link_hash_table); | |
475 | ||
ce71b576 NC |
476 | ret = bfd_malloc (amt); |
477 | if (ret == NULL) | |
90ace9e9 JT |
478 | return NULL; |
479 | ||
66eb6687 AM |
480 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
481 | elf_vax_link_hash_newfunc, | |
482 | sizeof (struct elf_vax_link_hash_entry))) | |
90ace9e9 JT |
483 | { |
484 | free (ret); | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | return &ret->root.root; | |
489 | } | |
490 | ||
491 | /* Keep vax-specific flags in the ELF header */ | |
b34976b6 | 492 | static bfd_boolean |
ce71b576 | 493 | elf32_vax_set_private_flags (bfd *abfd, flagword flags) |
90ace9e9 JT |
494 | { |
495 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
496 | elf_flags_init (abfd) = TRUE; |
497 | return TRUE; | |
90ace9e9 JT |
498 | } |
499 | ||
500 | /* Merge backend specific data from an object file to the output | |
501 | object file when linking. */ | |
b34976b6 | 502 | static bfd_boolean |
ce71b576 | 503 | elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
90ace9e9 JT |
504 | { |
505 | flagword out_flags; | |
506 | flagword in_flags; | |
507 | ||
508 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
509 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 510 | return TRUE; |
90ace9e9 JT |
511 | |
512 | in_flags = elf_elfheader (ibfd)->e_flags; | |
513 | out_flags = elf_elfheader (obfd)->e_flags; | |
514 | ||
515 | if (!elf_flags_init (obfd)) | |
516 | { | |
b34976b6 | 517 | elf_flags_init (obfd) = TRUE; |
90ace9e9 JT |
518 | elf_elfheader (obfd)->e_flags = in_flags; |
519 | } | |
520 | ||
b34976b6 | 521 | return TRUE; |
90ace9e9 JT |
522 | } |
523 | ||
524 | /* Display the flags field */ | |
b34976b6 | 525 | static bfd_boolean |
ce71b576 | 526 | elf32_vax_print_private_bfd_data (bfd *abfd, PTR ptr) |
90ace9e9 JT |
527 | { |
528 | FILE *file = (FILE *) ptr; | |
529 | ||
530 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
531 | ||
532 | /* Print normal ELF private data. */ | |
533 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
534 | ||
535 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
536 | ||
537 | /* xgettext:c-format */ | |
538 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
539 | ||
179d3252 | 540 | if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC) |
90ace9e9 JT |
541 | fprintf (file, _(" [nonpic]")); |
542 | ||
179d3252 | 543 | if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT) |
90ace9e9 JT |
544 | fprintf (file, _(" [d-float]")); |
545 | ||
179d3252 | 546 | if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT) |
90ace9e9 JT |
547 | fprintf (file, _(" [g-float]")); |
548 | ||
549 | fputc ('\n', file); | |
550 | ||
b34976b6 | 551 | return TRUE; |
90ace9e9 JT |
552 | } |
553 | /* Look through the relocs for a section during the first phase, and | |
554 | allocate space in the global offset table or procedure linkage | |
555 | table. */ | |
556 | ||
b34976b6 | 557 | static bfd_boolean |
ce71b576 NC |
558 | elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, |
559 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
560 | { |
561 | bfd *dynobj; | |
562 | Elf_Internal_Shdr *symtab_hdr; | |
563 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 JT |
564 | const Elf_Internal_Rela *rel; |
565 | const Elf_Internal_Rela *rel_end; | |
566 | asection *sgot; | |
567 | asection *srelgot; | |
568 | asection *sreloc; | |
569 | ||
1049f94e | 570 | if (info->relocatable) |
b34976b6 | 571 | return TRUE; |
90ace9e9 JT |
572 | |
573 | dynobj = elf_hash_table (info)->dynobj; | |
574 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
575 | sym_hashes = elf_sym_hashes (abfd); | |
90ace9e9 JT |
576 | |
577 | sgot = NULL; | |
578 | srelgot = NULL; | |
579 | sreloc = NULL; | |
580 | ||
581 | rel_end = relocs + sec->reloc_count; | |
582 | for (rel = relocs; rel < rel_end; rel++) | |
583 | { | |
584 | unsigned long r_symndx; | |
585 | struct elf_link_hash_entry *h; | |
586 | ||
587 | r_symndx = ELF32_R_SYM (rel->r_info); | |
588 | ||
589 | if (r_symndx < symtab_hdr->sh_info) | |
590 | h = NULL; | |
591 | else | |
973a3492 L |
592 | { |
593 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
594 | while (h->root.type == bfd_link_hash_indirect | |
595 | || h->root.type == bfd_link_hash_warning) | |
596 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
597 | } | |
90ace9e9 JT |
598 | |
599 | switch (ELF32_R_TYPE (rel->r_info)) | |
600 | { | |
601 | case R_VAX_GOT32: | |
fe723c87 MT |
602 | BFD_ASSERT (h != NULL); |
603 | if (h->forced_local | |
604 | || h == elf_hash_table (info)->hgot | |
605 | || h == elf_hash_table (info)->hplt) | |
90ace9e9 JT |
606 | break; |
607 | ||
7b6021f1 MR |
608 | /* If this is a local symbol, we resolve it directly without |
609 | creating a global offset table entry. */ | |
610 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
611 | break; | |
612 | ||
90ace9e9 JT |
613 | /* This symbol requires a global offset table entry. */ |
614 | ||
615 | if (dynobj == NULL) | |
616 | { | |
617 | /* Create the .got section. */ | |
618 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
619 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 620 | return FALSE; |
90ace9e9 JT |
621 | } |
622 | ||
623 | if (sgot == NULL) | |
624 | { | |
625 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
626 | BFD_ASSERT (sgot != NULL); | |
627 | } | |
628 | ||
629 | if (srelgot == NULL | |
630 | && (h != NULL || info->shared)) | |
631 | { | |
632 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
633 | if (srelgot == NULL) | |
634 | { | |
3496cb2a L |
635 | srelgot = bfd_make_section_with_flags (dynobj, |
636 | ".rela.got", | |
637 | (SEC_ALLOC | |
638 | | SEC_LOAD | |
639 | | SEC_HAS_CONTENTS | |
640 | | SEC_IN_MEMORY | |
641 | | SEC_LINKER_CREATED | |
642 | | SEC_READONLY)); | |
90ace9e9 | 643 | if (srelgot == NULL |
90ace9e9 | 644 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 645 | return FALSE; |
90ace9e9 JT |
646 | } |
647 | } | |
648 | ||
649 | if (h != NULL) | |
650 | { | |
651 | struct elf_vax_link_hash_entry *eh; | |
652 | ||
653 | eh = (struct elf_vax_link_hash_entry *) h; | |
654 | if (h->got.refcount == -1) | |
655 | { | |
656 | h->got.refcount = 1; | |
657 | eh->got_addend = rel->r_addend; | |
90ace9e9 JT |
658 | } |
659 | else | |
660 | { | |
661 | h->got.refcount++; | |
662 | if (eh->got_addend != (bfd_vma) rel->r_addend) | |
663 | (*_bfd_error_handler) | |
fe723c87 MT |
664 | (_("%s: warning: GOT addend of %ld to `%s' does" |
665 | " not match previous GOT addend of %ld"), | |
666 | bfd_get_filename (abfd), rel->r_addend, | |
667 | h->root.root.string, | |
668 | eh->got_addend); | |
cedb70c5 | 669 | |
90ace9e9 JT |
670 | } |
671 | } | |
672 | break; | |
673 | ||
674 | case R_VAX_PLT32: | |
675 | /* This symbol requires a procedure linkage table entry. We | |
676 | actually build the entry in adjust_dynamic_symbol, | |
677 | because this might be a case of linking PIC code which is | |
678 | never referenced by a dynamic object, in which case we | |
679 | don't need to generate a procedure linkage table entry | |
680 | after all. */ | |
681 | ||
682 | /* If this is a local symbol, we resolve it directly without | |
683 | creating a procedure linkage table entry. */ | |
fe723c87 | 684 | BFD_ASSERT (h != NULL); |
7b6021f1 | 685 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT || h->forced_local) |
fe723c87 | 686 | break; |
90ace9e9 | 687 | |
f5385ebf | 688 | h->needs_plt = 1; |
90ace9e9 JT |
689 | if (h->plt.refcount == -1) |
690 | h->plt.refcount = 1; | |
691 | else | |
692 | h->plt.refcount++; | |
693 | break; | |
694 | ||
695 | case R_VAX_PC8: | |
696 | case R_VAX_PC16: | |
697 | case R_VAX_PC32: | |
698 | /* If we are creating a shared library and this is not a local | |
699 | symbol, we need to copy the reloc into the shared library. | |
700 | However when linking with -Bsymbolic and this is a global | |
701 | symbol which is defined in an object we are including in the | |
702 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
703 | reloc directly. At this point we have not seen all the input | |
704 | files, so it is possible that DEF_REGULAR is not set now but | |
705 | will be set later (it is never cleared). We account for that | |
706 | possibility below by storing information in the | |
707 | pcrel_relocs_copied field of the hash table entry. */ | |
708 | if (!(info->shared | |
709 | && (sec->flags & SEC_ALLOC) != 0 | |
710 | && h != NULL | |
711 | && (!info->symbolic | |
f5385ebf | 712 | || !h->def_regular))) |
90ace9e9 | 713 | { |
7b6021f1 MR |
714 | if (h != NULL |
715 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
716 | && !h->forced_local) | |
90ace9e9 JT |
717 | { |
718 | /* Make sure a plt entry is created for this symbol if | |
719 | it turns out to be a function defined by a dynamic | |
720 | object. */ | |
721 | if (h->plt.refcount == -1) | |
722 | h->plt.refcount = 1; | |
723 | else | |
724 | h->plt.refcount++; | |
725 | } | |
726 | break; | |
727 | } | |
7b6021f1 MR |
728 | /* If this is a local symbol, we can resolve it directly. */ |
729 | if (h != NULL | |
730 | && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
731 | || h->forced_local)) | |
fe723c87 MT |
732 | break; |
733 | ||
90ace9e9 JT |
734 | /* Fall through. */ |
735 | case R_VAX_8: | |
736 | case R_VAX_16: | |
737 | case R_VAX_32: | |
7b6021f1 | 738 | if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
90ace9e9 JT |
739 | { |
740 | /* Make sure a plt entry is created for this symbol if it | |
741 | turns out to be a function defined by a dynamic object. */ | |
742 | if (h->plt.refcount == -1) | |
743 | h->plt.refcount = 1; | |
744 | else | |
745 | h->plt.refcount++; | |
746 | } | |
747 | ||
748 | /* If we are creating a shared library, we need to copy the | |
749 | reloc into the shared library. */ | |
750 | if (info->shared | |
751 | && (sec->flags & SEC_ALLOC) != 0) | |
752 | { | |
753 | /* When creating a shared object, we must copy these | |
754 | reloc types into the output file. We create a reloc | |
755 | section in dynobj and make room for this reloc. */ | |
756 | if (sreloc == NULL) | |
757 | { | |
83bac4b0 NC |
758 | sreloc = _bfd_elf_make_dynamic_reloc_section |
759 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
90ace9e9 | 760 | |
83bac4b0 | 761 | if (sreloc == NULL) |
b34976b6 | 762 | return FALSE; |
90ace9e9 | 763 | |
90ace9e9 JT |
764 | if (sec->flags & SEC_READONLY) |
765 | info->flags |= DF_TEXTREL; | |
766 | } | |
767 | ||
eea6121a | 768 | sreloc->size += sizeof (Elf32_External_Rela); |
90ace9e9 JT |
769 | |
770 | /* If we are linking with -Bsymbolic, we count the number of | |
771 | PC relative relocations we have entered for this symbol, | |
772 | so that we can discard them again if the symbol is later | |
773 | defined by a regular object. Note that this function is | |
19852a2a | 774 | only called if we are using a vaxelf linker hash table, |
90ace9e9 JT |
775 | which means that h is really a pointer to an |
776 | elf_vax_link_hash_entry. */ | |
777 | if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8 | |
ce71b576 NC |
778 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16 |
779 | || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32) | |
90ace9e9 JT |
780 | && info->symbolic) |
781 | { | |
782 | struct elf_vax_link_hash_entry *eh; | |
783 | struct elf_vax_pcrel_relocs_copied *p; | |
784 | ||
785 | eh = (struct elf_vax_link_hash_entry *) h; | |
786 | ||
787 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
788 | if (p->section == sreloc) | |
789 | break; | |
790 | ||
791 | if (p == NULL) | |
792 | { | |
793 | p = ((struct elf_vax_pcrel_relocs_copied *) | |
794 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
795 | if (p == NULL) | |
b34976b6 | 796 | return FALSE; |
90ace9e9 JT |
797 | p->next = eh->pcrel_relocs_copied; |
798 | eh->pcrel_relocs_copied = p; | |
799 | p->section = sreloc; | |
800 | p->count = 0; | |
801 | } | |
802 | ||
803 | ++p->count; | |
804 | } | |
805 | } | |
806 | ||
807 | break; | |
808 | ||
809 | /* This relocation describes the C++ object vtable hierarchy. | |
810 | Reconstruct it for later use during GC. */ | |
811 | case R_VAX_GNU_VTINHERIT: | |
c152c796 | 812 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 813 | return FALSE; |
90ace9e9 JT |
814 | break; |
815 | ||
816 | /* This relocation describes which C++ vtable entries are actually | |
817 | used. Record for later use during GC. */ | |
818 | case R_VAX_GNU_VTENTRY: | |
d17e0c6e JB |
819 | BFD_ASSERT (h != NULL); |
820 | if (h != NULL | |
821 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 822 | return FALSE; |
90ace9e9 JT |
823 | break; |
824 | ||
825 | default: | |
826 | break; | |
827 | } | |
828 | } | |
829 | ||
b34976b6 | 830 | return TRUE; |
90ace9e9 JT |
831 | } |
832 | ||
833 | /* Return the section that should be marked against GC for a given | |
834 | relocation. */ | |
835 | ||
836 | static asection * | |
ce71b576 | 837 | elf_vax_gc_mark_hook (asection *sec, |
07adf181 | 838 | struct bfd_link_info *info, |
ce71b576 NC |
839 | Elf_Internal_Rela *rel, |
840 | struct elf_link_hash_entry *h, | |
841 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
842 | { |
843 | if (h != NULL) | |
07adf181 AM |
844 | switch (ELF32_R_TYPE (rel->r_info)) |
845 | { | |
846 | case R_VAX_GNU_VTINHERIT: | |
847 | case R_VAX_GNU_VTENTRY: | |
848 | return NULL; | |
849 | } | |
850 | ||
851 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
90ace9e9 JT |
852 | } |
853 | ||
854 | /* Update the got entry reference counts for the section being removed. */ | |
855 | ||
b34976b6 | 856 | static bfd_boolean |
ce71b576 NC |
857 | elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
858 | const Elf_Internal_Rela *relocs) | |
90ace9e9 JT |
859 | { |
860 | Elf_Internal_Shdr *symtab_hdr; | |
861 | struct elf_link_hash_entry **sym_hashes; | |
90ace9e9 | 862 | const Elf_Internal_Rela *rel, *relend; |
90ace9e9 | 863 | bfd *dynobj; |
90ace9e9 | 864 | |
7dda2462 TG |
865 | if (info->relocatable) |
866 | return TRUE; | |
867 | ||
90ace9e9 JT |
868 | dynobj = elf_hash_table (info)->dynobj; |
869 | if (dynobj == NULL) | |
b34976b6 | 870 | return TRUE; |
90ace9e9 | 871 | |
babfd660 KH |
872 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
873 | sym_hashes = elf_sym_hashes (abfd); | |
874 | ||
90ace9e9 JT |
875 | relend = relocs + sec->reloc_count; |
876 | for (rel = relocs; rel < relend; rel++) | |
877 | { | |
babfd660 | 878 | unsigned long r_symndx; |
3eb128b2 AM |
879 | struct elf_link_hash_entry *h = NULL; |
880 | ||
881 | r_symndx = ELF32_R_SYM (rel->r_info); | |
882 | if (r_symndx >= symtab_hdr->sh_info) | |
883 | { | |
884 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
885 | while (h->root.type == bfd_link_hash_indirect | |
886 | || h->root.type == bfd_link_hash_warning) | |
887 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
888 | } | |
babfd660 | 889 | |
90ace9e9 JT |
890 | switch (ELF32_R_TYPE (rel->r_info)) |
891 | { | |
892 | case R_VAX_GOT32: | |
3eb128b2 AM |
893 | if (h != NULL && h->got.refcount > 0) |
894 | --h->got.refcount; | |
90ace9e9 JT |
895 | break; |
896 | ||
897 | case R_VAX_PLT32: | |
898 | case R_VAX_PC8: | |
899 | case R_VAX_PC16: | |
900 | case R_VAX_PC32: | |
901 | case R_VAX_8: | |
902 | case R_VAX_16: | |
903 | case R_VAX_32: | |
3eb128b2 AM |
904 | if (h != NULL && h->plt.refcount > 0) |
905 | --h->plt.refcount; | |
90ace9e9 JT |
906 | break; |
907 | ||
908 | default: | |
909 | break; | |
910 | } | |
911 | } | |
912 | ||
b34976b6 | 913 | return TRUE; |
90ace9e9 JT |
914 | } |
915 | ||
916 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
917 | regular object. The current definition is in some section of the | |
918 | dynamic object, but we're not including those sections. We have to | |
919 | change the definition to something the rest of the link can | |
920 | understand. */ | |
921 | ||
b34976b6 | 922 | static bfd_boolean |
90ace9e9 JT |
923 | elf_vax_adjust_dynamic_symbol (info, h) |
924 | struct bfd_link_info *info; | |
925 | struct elf_link_hash_entry *h; | |
926 | { | |
927 | bfd *dynobj; | |
928 | asection *s; | |
90ace9e9 JT |
929 | |
930 | dynobj = elf_hash_table (info)->dynobj; | |
931 | ||
932 | /* Make sure we know what is going on here. */ | |
933 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 934 | && (h->needs_plt |
f6e332e6 | 935 | || h->u.weakdef != NULL |
f5385ebf AM |
936 | || (h->def_dynamic |
937 | && h->ref_regular | |
938 | && !h->def_regular))); | |
90ace9e9 JT |
939 | |
940 | /* If this is a function, put it in the procedure linkage table. We | |
941 | will fill in the contents of the procedure linkage table later, | |
942 | when we know the address of the .got section. */ | |
943 | if (h->type == STT_FUNC | |
f5385ebf | 944 | || h->needs_plt) |
90ace9e9 JT |
945 | { |
946 | if (! info->shared | |
f5385ebf AM |
947 | && !h->def_dynamic |
948 | && !h->ref_dynamic | |
90ace9e9 JT |
949 | /* We must always create the plt entry if it was referenced |
950 | by a PLTxxO relocation. In this case we already recorded | |
951 | it as a dynamic symbol. */ | |
952 | && h->dynindx == -1) | |
953 | { | |
954 | /* This case can occur if we saw a PLTxx reloc in an input | |
955 | file, but the symbol was never referred to by a dynamic | |
956 | object. In such a case, we don't actually need to build | |
957 | a procedure linkage table, and we can just do a PCxx | |
958 | reloc instead. */ | |
f5385ebf | 959 | BFD_ASSERT (h->needs_plt); |
90ace9e9 | 960 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 961 | return TRUE; |
90ace9e9 JT |
962 | } |
963 | ||
964 | /* GC may have rendered this entry unused. */ | |
965 | if (h->plt.refcount <= 0) | |
966 | { | |
f5385ebf | 967 | h->needs_plt = 0; |
90ace9e9 | 968 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 969 | return TRUE; |
90ace9e9 JT |
970 | } |
971 | ||
972 | /* Make sure this symbol is output as a dynamic symbol. */ | |
973 | if (h->dynindx == -1) | |
974 | { | |
c152c796 | 975 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 976 | return FALSE; |
90ace9e9 JT |
977 | } |
978 | ||
979 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
980 | BFD_ASSERT (s != NULL); | |
981 | ||
982 | /* If this is the first .plt entry, make room for the special | |
983 | first entry. */ | |
eea6121a | 984 | if (s->size == 0) |
90ace9e9 | 985 | { |
eea6121a | 986 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
987 | } |
988 | ||
989 | /* If this symbol is not defined in a regular file, and we are | |
990 | not generating a shared library, then set the symbol to this | |
991 | location in the .plt. This is required to make function | |
992 | pointers compare as equal between the normal executable and | |
993 | the shared library. */ | |
994 | if (!info->shared | |
f5385ebf | 995 | && !h->def_regular) |
90ace9e9 JT |
996 | { |
997 | h->root.u.def.section = s; | |
eea6121a | 998 | h->root.u.def.value = s->size; |
90ace9e9 JT |
999 | } |
1000 | ||
eea6121a | 1001 | h->plt.offset = s->size; |
90ace9e9 JT |
1002 | |
1003 | /* Make room for this entry. */ | |
eea6121a | 1004 | s->size += PLT_ENTRY_SIZE; |
90ace9e9 JT |
1005 | |
1006 | /* We also need to make an entry in the .got.plt section, which | |
1007 | will be placed in the .got section by the linker script. */ | |
1008 | ||
1009 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1010 | BFD_ASSERT (s != NULL); | |
eea6121a | 1011 | s->size += 4; |
90ace9e9 JT |
1012 | |
1013 | /* We also need to make an entry in the .rela.plt section. */ | |
1014 | ||
1015 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1016 | BFD_ASSERT (s != NULL); | |
eea6121a | 1017 | s->size += sizeof (Elf32_External_Rela); |
90ace9e9 | 1018 | |
b34976b6 | 1019 | return TRUE; |
90ace9e9 JT |
1020 | } |
1021 | ||
1022 | /* Reinitialize the plt offset now that it is not used as a reference | |
1023 | count any more. */ | |
1024 | h->plt.offset = (bfd_vma) -1; | |
1025 | ||
1026 | /* If this is a weak symbol, and there is a real definition, the | |
1027 | processor independent code will have arranged for us to see the | |
1028 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1029 | if (h->u.weakdef != NULL) |
90ace9e9 | 1030 | { |
f6e332e6 AM |
1031 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1032 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1033 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1034 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 1035 | return TRUE; |
90ace9e9 JT |
1036 | } |
1037 | ||
1038 | /* This is a reference to a symbol defined by a dynamic object which | |
1039 | is not a function. */ | |
1040 | ||
1041 | /* If we are creating a shared library, we must presume that the | |
1042 | only references to the symbol are via the global offset table. | |
1043 | For such cases we need not do anything here; the relocations will | |
1044 | be handled correctly by relocate_section. */ | |
1045 | if (info->shared) | |
b34976b6 | 1046 | return TRUE; |
90ace9e9 | 1047 | |
909272ee AM |
1048 | if (h->size == 0) |
1049 | { | |
1050 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1051 | h->root.root.string); | |
1052 | return TRUE; | |
1053 | } | |
1054 | ||
90ace9e9 JT |
1055 | /* We must allocate the symbol in our .dynbss section, which will |
1056 | become part of the .bss section of the executable. There will be | |
1057 | an entry for this symbol in the .dynsym section. The dynamic | |
1058 | object will contain position independent code, so all references | |
1059 | from the dynamic object to this symbol will go through the global | |
1060 | offset table. The dynamic linker will use the .dynsym entry to | |
1061 | determine the address it must put in the global offset table, so | |
1062 | both the dynamic object and the regular object will refer to the | |
1063 | same memory location for the variable. */ | |
1064 | ||
1065 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1066 | BFD_ASSERT (s != NULL); | |
1067 | ||
1068 | /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to | |
1069 | copy the initial value out of the dynamic object and into the | |
1070 | runtime process image. We need to remember the offset into the | |
1071 | .rela.bss section we are going to use. */ | |
1072 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1073 | { | |
1074 | asection *srel; | |
1075 | ||
1076 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
1077 | BFD_ASSERT (srel != NULL); | |
eea6121a | 1078 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1079 | h->needs_copy = 1; |
90ace9e9 JT |
1080 | } |
1081 | ||
027297b7 | 1082 | return _bfd_elf_adjust_dynamic_copy (h, s); |
90ace9e9 JT |
1083 | } |
1084 | ||
1085 | /* Set the sizes of the dynamic sections. */ | |
1086 | ||
b34976b6 | 1087 | static bfd_boolean |
ce71b576 | 1088 | elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1089 | { |
1090 | bfd *dynobj; | |
1091 | asection *s; | |
b34976b6 AM |
1092 | bfd_boolean plt; |
1093 | bfd_boolean relocs; | |
1094 | bfd_boolean reltext; | |
90ace9e9 JT |
1095 | |
1096 | dynobj = elf_hash_table (info)->dynobj; | |
1097 | BFD_ASSERT (dynobj != NULL); | |
1098 | ||
1099 | if (elf_hash_table (info)->dynamic_sections_created) | |
1100 | { | |
1101 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 1102 | if (info->executable) |
90ace9e9 JT |
1103 | { |
1104 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1105 | BFD_ASSERT (s != NULL); | |
eea6121a | 1106 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
90ace9e9 JT |
1107 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1108 | } | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | /* We may have created entries in the .rela.got and .got sections. | |
1113 | However, if we are not creating the dynamic sections, we will | |
1114 | not actually use these entries. Reset the size of .rela.got | |
1115 | and .got, which will cause it to get stripped from the output | |
1116 | file below. */ | |
1117 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1118 | if (s != NULL) | |
eea6121a | 1119 | s->size = 0; |
90ace9e9 JT |
1120 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
1121 | if (s != NULL) | |
eea6121a | 1122 | s->size = 0; |
90ace9e9 JT |
1123 | s = bfd_get_section_by_name (dynobj, ".got"); |
1124 | if (s != NULL) | |
eea6121a | 1125 | s->size = 0; |
90ace9e9 JT |
1126 | } |
1127 | ||
1128 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
1129 | relative relocs against symbols defined in a regular object. We | |
1130 | allocated space for them in the check_relocs routine, but we will not | |
1131 | fill them in in the relocate_section routine. */ | |
1132 | if (info->shared && info->symbolic) | |
1133 | elf_vax_link_hash_traverse (elf_vax_hash_table (info), | |
b29635ba | 1134 | elf_vax_discard_copies, |
ce71b576 | 1135 | NULL); |
b29635ba | 1136 | |
b34976b6 | 1137 | /* If this is a -Bsymbolic shared link or a static link, we need to |
b29635ba JT |
1138 | discard all the got entries we've recorded. Otherwise, we need to |
1139 | instantiate (allocate space for them). */ | |
1140 | elf_link_hash_traverse (elf_hash_table (info), | |
1141 | elf_vax_instantiate_got_entries, | |
1142 | (PTR) info); | |
90ace9e9 JT |
1143 | |
1144 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1145 | determined the sizes of the various dynamic sections. Allocate | |
1146 | memory for them. */ | |
b34976b6 AM |
1147 | plt = FALSE; |
1148 | relocs = FALSE; | |
1149 | reltext = FALSE; | |
90ace9e9 JT |
1150 | for (s = dynobj->sections; s != NULL; s = s->next) |
1151 | { | |
1152 | const char *name; | |
90ace9e9 JT |
1153 | |
1154 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1155 | continue; | |
1156 | ||
1157 | /* It's OK to base decisions on the section name, because none | |
1158 | of the dynobj section names depend upon the input files. */ | |
1159 | name = bfd_get_section_name (dynobj, s); | |
1160 | ||
90ace9e9 JT |
1161 | if (strcmp (name, ".plt") == 0) |
1162 | { | |
c456f082 AM |
1163 | /* Remember whether there is a PLT. */ |
1164 | plt = s->size != 0; | |
90ace9e9 | 1165 | } |
0112cd26 | 1166 | else if (CONST_STRNEQ (name, ".rela")) |
90ace9e9 | 1167 | { |
c456f082 | 1168 | if (s->size != 0) |
90ace9e9 JT |
1169 | { |
1170 | asection *target; | |
1171 | ||
1172 | /* Remember whether there are any reloc sections other | |
1173 | than .rela.plt. */ | |
1174 | if (strcmp (name, ".rela.plt") != 0) | |
1175 | { | |
1176 | const char *outname; | |
1177 | ||
b34976b6 | 1178 | relocs = TRUE; |
90ace9e9 JT |
1179 | |
1180 | /* If this relocation section applies to a read only | |
1181 | section, then we probably need a DT_TEXTREL | |
1182 | entry. .rela.plt is actually associated with | |
1183 | .got.plt, which is never readonly. */ | |
1184 | outname = bfd_get_section_name (output_bfd, | |
1185 | s->output_section); | |
1186 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1187 | if (target != NULL | |
1188 | && (target->flags & SEC_READONLY) != 0 | |
1189 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 1190 | reltext = TRUE; |
90ace9e9 JT |
1191 | } |
1192 | ||
1193 | /* We use the reloc_count field as a counter if we need | |
1194 | to copy relocs into the output file. */ | |
1195 | s->reloc_count = 0; | |
1196 | } | |
1197 | } | |
0112cd26 | 1198 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 1199 | && strcmp (name, ".dynbss") != 0) |
90ace9e9 JT |
1200 | { |
1201 | /* It's not one of our sections, so don't allocate space. */ | |
1202 | continue; | |
1203 | } | |
1204 | ||
c456f082 | 1205 | if (s->size == 0) |
90ace9e9 | 1206 | { |
c456f082 AM |
1207 | /* If we don't need this section, strip it from the |
1208 | output file. This is mostly to handle .rela.bss and | |
1209 | .rela.plt. We must create both sections in | |
1210 | create_dynamic_sections, because they must be created | |
1211 | before the linker maps input sections to output | |
1212 | sections. The linker does that before | |
1213 | adjust_dynamic_symbol is called, and it is that | |
1214 | function which decides whether anything needs to go | |
1215 | into these sections. */ | |
8423293d | 1216 | s->flags |= SEC_EXCLUDE; |
90ace9e9 JT |
1217 | continue; |
1218 | } | |
1219 | ||
c456f082 AM |
1220 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1221 | continue; | |
1222 | ||
90ace9e9 | 1223 | /* Allocate memory for the section contents. */ |
eea6121a | 1224 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
c456f082 | 1225 | if (s->contents == NULL) |
b34976b6 | 1226 | return FALSE; |
90ace9e9 JT |
1227 | } |
1228 | ||
1229 | if (elf_hash_table (info)->dynamic_sections_created) | |
1230 | { | |
1231 | /* Add some entries to the .dynamic section. We fill in the | |
1232 | values later, in elf_vax_finish_dynamic_sections, but we | |
1233 | must add the entries now so that we get the correct size for | |
1234 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1235 | dynamic linker and used by the debugger. */ | |
1236 | #define add_dynamic_entry(TAG, VAL) \ | |
5a580b3a | 1237 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
90ace9e9 JT |
1238 | |
1239 | if (!info->shared) | |
1240 | { | |
1241 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
b34976b6 | 1242 | return FALSE; |
90ace9e9 JT |
1243 | } |
1244 | ||
1245 | if (plt) | |
1246 | { | |
1247 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1248 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1249 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1250 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1251 | return FALSE; |
90ace9e9 JT |
1252 | } |
1253 | ||
1254 | if (relocs) | |
1255 | { | |
1256 | if (!add_dynamic_entry (DT_RELA, 0) | |
1257 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1258 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1259 | return FALSE; |
90ace9e9 JT |
1260 | } |
1261 | ||
1262 | if (reltext || (info->flags & DF_TEXTREL) != 0) | |
1263 | { | |
1264 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1265 | return FALSE; |
90ace9e9 JT |
1266 | } |
1267 | } | |
1268 | #undef add_dynamic_entry | |
1269 | ||
b34976b6 | 1270 | return TRUE; |
90ace9e9 JT |
1271 | } |
1272 | ||
1273 | /* This function is called via elf_vax_link_hash_traverse if we are | |
1274 | creating a shared object with -Bsymbolic. It discards the space | |
1275 | allocated to copy PC relative relocs against symbols which are defined | |
1276 | in regular objects. We allocated space for them in the check_relocs | |
1277 | routine, but we won't fill them in in the relocate_section routine. */ | |
1278 | ||
b34976b6 | 1279 | static bfd_boolean |
ce71b576 NC |
1280 | elf_vax_discard_copies (struct elf_vax_link_hash_entry *h, |
1281 | PTR ignore ATTRIBUTE_UNUSED) | |
90ace9e9 JT |
1282 | { |
1283 | struct elf_vax_pcrel_relocs_copied *s; | |
1284 | ||
1285 | if (h->root.root.type == bfd_link_hash_warning) | |
1286 | h = (struct elf_vax_link_hash_entry *) h->root.root.u.i.link; | |
1287 | ||
1288 | /* We only discard relocs for symbols defined in a regular object. */ | |
f5385ebf | 1289 | if (!h->root.def_regular) |
b34976b6 | 1290 | return TRUE; |
90ace9e9 JT |
1291 | |
1292 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 1293 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
90ace9e9 | 1294 | |
b34976b6 | 1295 | return TRUE; |
90ace9e9 JT |
1296 | } |
1297 | ||
b29635ba JT |
1298 | /* This function is called via elf_link_hash_traverse. It looks for entries |
1299 | that have GOT or PLT (.GOT) references. If creating a static object or a | |
1300 | shared object with -Bsymbolic, it resets the reference count back to 0 | |
1301 | and sets the offset to -1 so normal PC32 relocation will be done. If | |
1302 | creating a shared object or executable, space in the .got and .rela.got | |
1303 | will be reserved for the symbol. */ | |
1304 | ||
b34976b6 | 1305 | static bfd_boolean |
ce71b576 | 1306 | elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, PTR infoptr) |
b29635ba JT |
1307 | { |
1308 | struct bfd_link_info *info = (struct bfd_link_info *) infoptr; | |
1309 | bfd *dynobj; | |
1310 | asection *sgot; | |
1311 | asection *srelgot; | |
b34976b6 | 1312 | |
b29635ba JT |
1313 | /* We don't care about non-GOT (and non-PLT) entries. */ |
1314 | if (h->got.refcount <= 0 && h->plt.refcount <= 0) | |
b34976b6 | 1315 | return TRUE; |
b29635ba JT |
1316 | |
1317 | dynobj = elf_hash_table (info)->dynobj; | |
1318 | if (dynobj == NULL) | |
b34976b6 | 1319 | return TRUE; |
b29635ba JT |
1320 | |
1321 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1322 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1323 | ||
1324 | if (!elf_hash_table (info)->dynamic_sections_created | |
fe723c87 MT |
1325 | || (info->shared && info->symbolic) |
1326 | || h->forced_local) | |
b29635ba JT |
1327 | { |
1328 | h->got.refcount = 0; | |
1329 | h->got.offset = (bfd_vma) -1; | |
1330 | h->plt.refcount = 0; | |
1331 | h->plt.offset = (bfd_vma) -1; | |
1332 | } | |
1333 | else if (h->got.refcount > 0) | |
1334 | { | |
886815b2 MR |
1335 | bfd_boolean dyn; |
1336 | ||
b29635ba JT |
1337 | /* Make sure this symbol is output as a dynamic symbol. */ |
1338 | if (h->dynindx == -1) | |
1339 | { | |
c152c796 | 1340 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1341 | return FALSE; |
b29635ba JT |
1342 | } |
1343 | ||
886815b2 | 1344 | dyn = elf_hash_table (info)->dynamic_sections_created; |
b29635ba | 1345 | /* Allocate space in the .got and .rela.got sections. */ |
886815b2 MR |
1346 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1347 | && (info->shared | |
1348 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
1349 | { | |
1350 | sgot->size += 4; | |
1351 | srelgot->size += sizeof (Elf32_External_Rela); | |
1352 | } | |
b29635ba JT |
1353 | } |
1354 | ||
b34976b6 | 1355 | return TRUE; |
b29635ba JT |
1356 | } |
1357 | ||
90ace9e9 JT |
1358 | /* Relocate an VAX ELF section. */ |
1359 | ||
b34976b6 | 1360 | static bfd_boolean |
ce71b576 NC |
1361 | elf_vax_relocate_section (bfd *output_bfd, |
1362 | struct bfd_link_info *info, | |
1363 | bfd *input_bfd, | |
1364 | asection *input_section, | |
1365 | bfd_byte *contents, | |
1366 | Elf_Internal_Rela *relocs, | |
1367 | Elf_Internal_Sym *local_syms, | |
1368 | asection **local_sections) | |
90ace9e9 JT |
1369 | { |
1370 | bfd *dynobj; | |
1371 | Elf_Internal_Shdr *symtab_hdr; | |
1372 | struct elf_link_hash_entry **sym_hashes; | |
1373 | bfd_vma *local_got_offsets; | |
1374 | bfd_vma plt_index; | |
1375 | bfd_vma got_offset; | |
1376 | asection *sgot; | |
1377 | asection *splt; | |
1378 | asection *sgotplt; | |
1379 | asection *sreloc; | |
1380 | Elf_Internal_Rela *rel; | |
1381 | Elf_Internal_Rela *relend; | |
1382 | ||
1383 | dynobj = elf_hash_table (info)->dynobj; | |
1384 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1385 | sym_hashes = elf_sym_hashes (input_bfd); | |
1386 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1387 | ||
1388 | sgot = NULL; | |
1389 | splt = NULL; | |
1390 | sgotplt = NULL; | |
1391 | sreloc = NULL; | |
1392 | ||
1393 | rel = relocs; | |
1394 | relend = relocs + input_section->reloc_count; | |
1395 | for (; rel < relend; rel++) | |
1396 | { | |
1397 | int r_type; | |
1398 | reloc_howto_type *howto; | |
1399 | unsigned long r_symndx; | |
1400 | struct elf_link_hash_entry *h; | |
1401 | Elf_Internal_Sym *sym; | |
1402 | asection *sec; | |
1403 | bfd_vma relocation; | |
1404 | bfd_reloc_status_type r; | |
1405 | ||
1406 | r_type = ELF32_R_TYPE (rel->r_info); | |
1407 | if (r_type < 0 || r_type >= (int) R_VAX_max) | |
1408 | { | |
1409 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1410 | return FALSE; |
90ace9e9 JT |
1411 | } |
1412 | howto = howto_table + r_type; | |
1413 | ||
f0fe0e16 | 1414 | r_symndx = ELF32_R_SYM (rel->r_info); |
90ace9e9 JT |
1415 | h = NULL; |
1416 | sym = NULL; | |
1417 | sec = NULL; | |
1418 | if (r_symndx < symtab_hdr->sh_info) | |
1419 | { | |
1420 | sym = local_syms + r_symndx; | |
1421 | sec = local_sections[r_symndx]; | |
8517fae7 | 1422 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
90ace9e9 JT |
1423 | } |
1424 | else | |
1425 | { | |
560e09e9 NC |
1426 | bfd_boolean unresolved_reloc; |
1427 | bfd_boolean warned; | |
1428 | ||
b2a8e766 AM |
1429 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1430 | r_symndx, symtab_hdr, sym_hashes, | |
1431 | h, sec, relocation, | |
1432 | unresolved_reloc, warned); | |
ce71b576 | 1433 | |
560e09e9 | 1434 | if ((h->root.type == bfd_link_hash_defined |
90ace9e9 | 1435 | || h->root.type == bfd_link_hash_defweak) |
560e09e9 | 1436 | && ((r_type == R_VAX_PLT32 |
90ace9e9 | 1437 | && h->plt.offset != (bfd_vma) -1 |
fe723c87 | 1438 | && !h->forced_local |
90ace9e9 JT |
1439 | && elf_hash_table (info)->dynamic_sections_created) |
1440 | || (r_type == R_VAX_GOT32 | |
fe723c87 MT |
1441 | && h->got.offset != (bfd_vma) -1 |
1442 | && !h->forced_local | |
90ace9e9 JT |
1443 | && elf_hash_table (info)->dynamic_sections_created |
1444 | && (! info->shared | |
1445 | || (! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1446 | || !h->def_regular)) |
90ace9e9 JT |
1447 | || (info->shared |
1448 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1449 | || !h->def_regular) |
90ace9e9 JT |
1450 | && ((input_section->flags & SEC_ALLOC) != 0 |
1451 | /* DWARF will emit R_VAX_32 relocations in its | |
1452 | sections against symbols defined externally | |
1453 | in shared libraries. We can't do anything | |
1454 | with them here. */ | |
1455 | ||
1456 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 1457 | && h->def_dynamic)) |
90ace9e9 JT |
1458 | && (r_type == R_VAX_8 |
1459 | || r_type == R_VAX_16 | |
fe723c87 | 1460 | || r_type == R_VAX_32)))) |
560e09e9 NC |
1461 | /* In these cases, we don't need the relocation |
1462 | value. We check specially because in some | |
1463 | obscure cases sec->output_section will be NULL. */ | |
90ace9e9 | 1464 | relocation = 0; |
90ace9e9 JT |
1465 | } |
1466 | ||
ab96bf03 AM |
1467 | if (sec != NULL && elf_discarded_section (sec)) |
1468 | { | |
1469 | /* For relocs against symbols from removed linkonce sections, | |
1470 | or sections discarded by a linker script, we just want the | |
1471 | section contents zeroed. Avoid any special processing. */ | |
1472 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1473 | rel->r_info = 0; | |
1474 | rel->r_addend = 0; | |
1475 | continue; | |
1476 | } | |
1477 | ||
1478 | if (info->relocatable) | |
1479 | continue; | |
1480 | ||
90ace9e9 JT |
1481 | switch (r_type) |
1482 | { | |
1483 | case R_VAX_GOT32: | |
1484 | /* Relocation is to the address of the entry for this symbol | |
1485 | in the global offset table. */ | |
7b6021f1 MR |
1486 | if (h == NULL |
1487 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1488 | || h->got.offset == (bfd_vma) -1 | |
1489 | || h->forced_local) | |
90ace9e9 JT |
1490 | break; |
1491 | ||
1492 | /* Relocation is the offset of the entry for this symbol in | |
1493 | the global offset table. */ | |
1494 | ||
1495 | { | |
886815b2 | 1496 | bfd_boolean dyn; |
90ace9e9 JT |
1497 | bfd_vma off; |
1498 | ||
90ace9e9 JT |
1499 | if (sgot == NULL) |
1500 | { | |
1501 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1502 | BFD_ASSERT (sgot != NULL); | |
1503 | } | |
1504 | ||
1505 | BFD_ASSERT (h != NULL); | |
1506 | off = h->got.offset; | |
1507 | BFD_ASSERT (off != (bfd_vma) -1); | |
eea6121a | 1508 | BFD_ASSERT (off < sgot->size); |
90ace9e9 | 1509 | |
886815b2 MR |
1510 | dyn = elf_hash_table (info)->dynamic_sections_created; |
1511 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
1512 | || (info->shared | |
1513 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
90ace9e9 JT |
1514 | { |
1515 | /* The symbol was forced to be local | |
1516 | because of a version file.. We must initialize | |
1517 | this entry in the global offset table. Since | |
1518 | the offset must always be a multiple of 4, we | |
1519 | use the least significant bit to record whether | |
1520 | we have initialized it already. | |
1521 | ||
1522 | When doing a dynamic link, we create a .rela.got | |
1523 | relocation entry to initialize the value. This | |
1524 | is done in the finish_dynamic_symbol routine. */ | |
1525 | if ((off & 1) != 0) | |
1526 | off &= ~1; | |
1527 | else | |
1528 | { | |
1529 | bfd_put_32 (output_bfd, relocation + rel->r_addend, | |
1530 | sgot->contents + off); | |
1531 | h->got.offset |= 1; | |
1532 | } | |
1533 | } else { | |
1534 | bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off); | |
1535 | } | |
1536 | ||
1537 | relocation = sgot->output_offset + off; | |
b29635ba | 1538 | /* The GOT relocation uses the addend. */ |
90ace9e9 JT |
1539 | rel->r_addend = 0; |
1540 | ||
b29635ba JT |
1541 | /* Change the reference to be indirect. */ |
1542 | contents[rel->r_offset - 1] |= 0x10; | |
1543 | relocation += sgot->output_section->vma; | |
90ace9e9 JT |
1544 | } |
1545 | break; | |
1546 | ||
04981bc1 MR |
1547 | case R_VAX_PC32: |
1548 | /* If we are creating an executable and the function this | |
1549 | reloc refers to is in a shared lib, then we made a PLT | |
1550 | entry for this symbol and need to handle the reloc like | |
1551 | a PLT reloc. */ | |
1552 | if (info->shared) | |
1553 | goto r_vax_pc32_shared; | |
1554 | /* Fall through. */ | |
90ace9e9 JT |
1555 | case R_VAX_PLT32: |
1556 | /* Relocation is to the entry for this symbol in the | |
1557 | procedure linkage table. */ | |
1558 | ||
1559 | /* Resolve a PLTxx reloc against a local symbol directly, | |
1560 | without using the procedure linkage table. */ | |
7b6021f1 MR |
1561 | if (h == NULL |
1562 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1563 | || h->forced_local) | |
90ace9e9 JT |
1564 | break; |
1565 | ||
1566 | if (h->plt.offset == (bfd_vma) -1 | |
1567 | || !elf_hash_table (info)->dynamic_sections_created) | |
1568 | { | |
1569 | /* We didn't make a PLT entry for this symbol. This | |
1570 | happens when statically linking PIC code, or when | |
1571 | using -Bsymbolic. */ | |
1572 | break; | |
1573 | } | |
1574 | ||
1575 | if (splt == NULL) | |
1576 | { | |
1577 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1578 | BFD_ASSERT (splt != NULL); | |
1579 | } | |
1580 | ||
1581 | if (sgotplt == NULL) | |
1582 | { | |
1583 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1584 | BFD_ASSERT (splt != NULL); | |
1585 | } | |
1586 | ||
1587 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1588 | ||
1589 | /* Get the offset into the .got table of the entry that | |
1590 | corresponds to this function. Each .got entry is 4 bytes. | |
1591 | The first two are reserved. */ | |
1592 | got_offset = (plt_index + 3) * 4; | |
1593 | ||
1594 | /* We want the relocate to point into the .got.plt instead | |
cedb70c5 | 1595 | of the plt itself. */ |
90ace9e9 JT |
1596 | relocation = (sgotplt->output_section->vma |
1597 | + sgotplt->output_offset | |
1598 | + got_offset); | |
1599 | contents[rel->r_offset-1] |= 0x10; /* make indirect */ | |
1600 | if (rel->r_addend == 2) | |
1601 | { | |
1602 | h->plt.offset |= 1; | |
1603 | } | |
1604 | else if (rel->r_addend != 0) | |
1605 | (*_bfd_error_handler) | |
1606 | (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"), | |
1607 | bfd_get_filename (input_bfd), rel->r_addend, | |
1608 | h->root.root.string, | |
1609 | bfd_get_section_name (input_bfd, input_section)); | |
1610 | rel->r_addend = 0; | |
1611 | ||
1612 | break; | |
1613 | ||
1614 | case R_VAX_PC8: | |
1615 | case R_VAX_PC16: | |
04981bc1 | 1616 | r_vax_pc32_shared: |
7b6021f1 MR |
1617 | if (h == NULL |
1618 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1619 | || h->forced_local) | |
90ace9e9 JT |
1620 | break; |
1621 | /* Fall through. */ | |
1622 | case R_VAX_8: | |
1623 | case R_VAX_16: | |
1624 | case R_VAX_32: | |
1625 | if (info->shared | |
1626 | && r_symndx != 0 | |
1627 | && (input_section->flags & SEC_ALLOC) != 0 | |
1628 | && ((r_type != R_VAX_PC8 | |
1629 | && r_type != R_VAX_PC16 | |
1630 | && r_type != R_VAX_PC32) | |
da6bcfca MT |
1631 | || ((input_section->flags & SEC_CODE) |
1632 | && (!info->symbolic | |
1633 | || (!h->def_regular && h->type != STT_SECTION))))) | |
90ace9e9 JT |
1634 | { |
1635 | Elf_Internal_Rela outrel; | |
947216bf | 1636 | bfd_byte *loc; |
b34976b6 | 1637 | bfd_boolean skip, relocate; |
90ace9e9 JT |
1638 | |
1639 | /* When generating a shared object, these relocations | |
1640 | are copied into the output file to be resolved at run | |
1641 | time. */ | |
90ace9e9 JT |
1642 | if (sreloc == NULL) |
1643 | { | |
83bac4b0 NC |
1644 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1645 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1646 | if (sreloc == NULL) | |
b34976b6 | 1647 | return FALSE; |
90ace9e9 JT |
1648 | } |
1649 | ||
b34976b6 AM |
1650 | skip = FALSE; |
1651 | relocate = FALSE; | |
90ace9e9 JT |
1652 | |
1653 | outrel.r_offset = | |
1654 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1655 | rel->r_offset); | |
1656 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1657 | skip = TRUE; |
90ace9e9 | 1658 | if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1659 | skip = TRUE, relocate = TRUE; |
90ace9e9 JT |
1660 | outrel.r_offset += (input_section->output_section->vma |
1661 | + input_section->output_offset); | |
1662 | ||
1663 | if (skip) | |
1664 | memset (&outrel, 0, sizeof outrel); | |
1665 | /* h->dynindx may be -1 if the symbol was marked to | |
1666 | become local. */ | |
1667 | else if (h != NULL | |
1668 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1669 | || !h->def_regular)) |
90ace9e9 JT |
1670 | { |
1671 | BFD_ASSERT (h->dynindx != -1); | |
1672 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1673 | outrel.r_addend = relocation + rel->r_addend; | |
1674 | } | |
1675 | else | |
1676 | { | |
1677 | if (r_type == R_VAX_32) | |
1678 | { | |
b34976b6 | 1679 | relocate = TRUE; |
90ace9e9 JT |
1680 | outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); |
1681 | BFD_ASSERT (bfd_get_signed_32 (input_bfd, | |
1682 | &contents[rel->r_offset]) == 0); | |
1683 | outrel.r_addend = relocation + rel->r_addend; | |
1684 | } | |
1685 | else | |
1686 | { | |
1687 | long indx; | |
1688 | ||
8517fae7 | 1689 | if (bfd_is_abs_section (sec)) |
90ace9e9 JT |
1690 | indx = 0; |
1691 | else if (sec == NULL || sec->owner == NULL) | |
1692 | { | |
1693 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1694 | return FALSE; |
90ace9e9 JT |
1695 | } |
1696 | else | |
1697 | { | |
1698 | asection *osec; | |
1699 | ||
74541ad4 AM |
1700 | /* We are turning this relocation into one |
1701 | against a section symbol. It would be | |
1702 | proper to subtract the symbol's value, | |
1703 | osec->vma, from the emitted reloc addend, | |
1704 | but ld.so expects buggy relocs. */ | |
90ace9e9 JT |
1705 | osec = sec->output_section; |
1706 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1707 | if (indx == 0) |
1708 | { | |
1709 | struct elf_link_hash_table *htab; | |
1710 | htab = elf_hash_table (info); | |
1711 | osec = htab->text_index_section; | |
1712 | indx = elf_section_data (osec)->dynindx; | |
1713 | } | |
1714 | BFD_ASSERT (indx != 0); | |
90ace9e9 JT |
1715 | } |
1716 | ||
1717 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1718 | outrel.r_addend = relocation + rel->r_addend; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | if (!strcmp (bfd_get_section_name (input_bfd, input_section), | |
cedb70c5 | 1723 | ".text") != 0 || |
90ace9e9 JT |
1724 | (info->shared |
1725 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_32 | |
1726 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_RELATIVE | |
1727 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_COPY | |
1728 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_JMP_SLOT | |
1729 | && ELF32_R_TYPE(outrel.r_info) != R_VAX_GLOB_DAT)) | |
1730 | { | |
1731 | if (h != NULL) | |
1732 | (*_bfd_error_handler) | |
1733 | (_("%s: warning: %s relocation against symbol `%s' from %s section"), | |
1734 | bfd_get_filename (input_bfd), howto->name, | |
1735 | h->root.root.string, | |
1736 | bfd_get_section_name (input_bfd, input_section)); | |
1737 | else | |
1738 | (*_bfd_error_handler) | |
1739 | (_("%s: warning: %s relocation to 0x%x from %s section"), | |
1740 | bfd_get_filename (input_bfd), howto->name, | |
1741 | outrel.r_addend, | |
1742 | bfd_get_section_name (input_bfd, input_section)); | |
1743 | } | |
947216bf AM |
1744 | loc = sreloc->contents; |
1745 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1746 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
90ace9e9 JT |
1747 | |
1748 | /* This reloc will be computed at runtime, so there's no | |
1749 | need to do anything now, except for R_VAX_32 | |
1750 | relocations that have been turned into | |
1751 | R_VAX_RELATIVE. */ | |
1752 | if (!relocate) | |
1753 | continue; | |
1754 | } | |
1755 | ||
1756 | break; | |
1757 | ||
1758 | case R_VAX_GNU_VTINHERIT: | |
1759 | case R_VAX_GNU_VTENTRY: | |
1760 | /* These are no-ops in the end. */ | |
1761 | continue; | |
1762 | ||
1763 | default: | |
1764 | break; | |
1765 | } | |
1766 | ||
b34976b6 | 1767 | /* VAX PCREL relocations are from the end of relocation, not the start. |
b29635ba JT |
1768 | So subtract the difference from the relocation amount since we can't |
1769 | add it to the offset. */ | |
90ace9e9 | 1770 | if (howto->pc_relative && howto->pcrel_offset) |
b29635ba | 1771 | relocation -= bfd_get_reloc_size(howto); |
90ace9e9 JT |
1772 | |
1773 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1774 | contents, rel->r_offset, | |
1775 | relocation, rel->r_addend); | |
1776 | ||
1777 | if (r != bfd_reloc_ok) | |
1778 | { | |
1779 | switch (r) | |
1780 | { | |
1781 | default: | |
1782 | case bfd_reloc_outofrange: | |
1783 | abort (); | |
1784 | case bfd_reloc_overflow: | |
1785 | { | |
1786 | const char *name; | |
1787 | ||
1788 | if (h != NULL) | |
dfeffb9f | 1789 | name = NULL; |
90ace9e9 JT |
1790 | else |
1791 | { | |
1792 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1793 | symtab_hdr->sh_link, | |
1794 | sym->st_name); | |
1795 | if (name == NULL) | |
b34976b6 | 1796 | return FALSE; |
90ace9e9 JT |
1797 | if (*name == '\0') |
1798 | name = bfd_section_name (input_bfd, sec); | |
1799 | } | |
1800 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
1801 | (info, (h ? &h->root : NULL), name, howto->name, |
1802 | (bfd_vma) 0, input_bfd, input_section, | |
1803 | rel->r_offset))) | |
b34976b6 | 1804 | return FALSE; |
90ace9e9 JT |
1805 | } |
1806 | break; | |
1807 | } | |
1808 | } | |
1809 | } | |
1810 | ||
b34976b6 | 1811 | return TRUE; |
90ace9e9 JT |
1812 | } |
1813 | ||
1814 | /* Finish up dynamic symbol handling. We set the contents of various | |
1815 | dynamic sections here. */ | |
1816 | ||
b34976b6 | 1817 | static bfd_boolean |
ce71b576 NC |
1818 | elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
1819 | struct elf_link_hash_entry *h, | |
1820 | Elf_Internal_Sym *sym) | |
90ace9e9 JT |
1821 | { |
1822 | bfd *dynobj; | |
1823 | ||
1824 | dynobj = elf_hash_table (info)->dynobj; | |
1825 | ||
1826 | if (h->plt.offset != (bfd_vma) -1) | |
1827 | { | |
1828 | asection *splt; | |
1829 | asection *sgot; | |
1830 | asection *srela; | |
1831 | bfd_vma plt_index; | |
1832 | bfd_vma got_offset; | |
1833 | bfd_vma addend; | |
1834 | Elf_Internal_Rela rela; | |
947216bf | 1835 | bfd_byte *loc; |
90ace9e9 JT |
1836 | |
1837 | /* This symbol has an entry in the procedure linkage table. Set | |
1838 | it up. */ | |
90ace9e9 JT |
1839 | BFD_ASSERT (h->dynindx != -1); |
1840 | ||
1841 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1842 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1843 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1844 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1845 | ||
1846 | addend = 2 * (h->plt.offset & 1); | |
1847 | h->plt.offset &= ~1; | |
1848 | ||
1849 | /* Get the index in the procedure linkage table which | |
1850 | corresponds to this symbol. This is the index of this symbol | |
1851 | in all the symbols for which we are making plt entries. The | |
1852 | first entry in the procedure linkage table is reserved. */ | |
1853 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1854 | ||
1855 | /* Get the offset into the .got table of the entry that | |
1856 | corresponds to this function. Each .got entry is 4 bytes. | |
1857 | The first two are reserved. */ | |
1858 | got_offset = (plt_index + 3) * 4; | |
1859 | ||
1860 | /* Fill in the entry in the procedure linkage table. */ | |
1861 | memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry, | |
1862 | PLT_ENTRY_SIZE); | |
1863 | ||
1864 | /* The offset is relative to the first extension word. */ | |
1865 | bfd_put_32 (output_bfd, | |
1866 | -(h->plt.offset + 8), | |
1867 | splt->contents + h->plt.offset + 4); | |
1868 | ||
1869 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
1870 | splt->contents + h->plt.offset + 8); | |
1871 | ||
1872 | /* Fill in the entry in the global offset table. */ | |
1873 | bfd_put_32 (output_bfd, | |
1874 | (splt->output_section->vma | |
1875 | + splt->output_offset | |
1876 | + h->plt.offset) + addend, | |
1877 | sgot->contents + got_offset); | |
1878 | ||
1879 | /* Fill in the entry in the .rela.plt section. */ | |
1880 | rela.r_offset = (sgot->output_section->vma | |
1881 | + sgot->output_offset | |
1882 | + got_offset); | |
1883 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT); | |
1884 | rela.r_addend = addend; | |
947216bf AM |
1885 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
1886 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 | 1887 | |
f5385ebf | 1888 | if (!h->def_regular) |
90ace9e9 JT |
1889 | { |
1890 | /* Mark the symbol as undefined, rather than as defined in | |
1891 | the .plt section. Leave the value alone. */ | |
1892 | sym->st_shndx = SHN_UNDEF; | |
1893 | } | |
1894 | } | |
1895 | ||
1896 | if (h->got.offset != (bfd_vma) -1) | |
1897 | { | |
1898 | asection *sgot; | |
1899 | asection *srela; | |
1900 | Elf_Internal_Rela rela; | |
947216bf | 1901 | bfd_byte *loc; |
90ace9e9 JT |
1902 | |
1903 | /* This symbol has an entry in the global offset table. Set it | |
1904 | up. */ | |
90ace9e9 JT |
1905 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1906 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1907 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1908 | ||
1909 | rela.r_offset = (sgot->output_section->vma | |
1910 | + sgot->output_offset | |
1911 | + (h->got.offset &~ 1)); | |
1912 | ||
1913 | /* If the symbol was forced to be local because of a version file | |
1914 | locally we just want to emit a RELATIVE reloc. The entry in | |
1915 | the global offset table will already have been initialized in | |
1916 | the relocate_section function. */ | |
1917 | if (info->shared | |
1918 | && h->dynindx == -1 | |
f5385ebf | 1919 | && h->def_regular) |
90ace9e9 JT |
1920 | { |
1921 | rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE); | |
1922 | } | |
1923 | else | |
1924 | { | |
1925 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT); | |
1926 | } | |
1927 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
1928 | (sgot->contents | |
1929 | + (h->got.offset & ~1))); | |
1930 | ||
947216bf AM |
1931 | loc = srela->contents; |
1932 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1933 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1934 | } |
1935 | ||
f5385ebf | 1936 | if (h->needs_copy) |
90ace9e9 JT |
1937 | { |
1938 | asection *s; | |
1939 | Elf_Internal_Rela rela; | |
947216bf | 1940 | bfd_byte *loc; |
90ace9e9 JT |
1941 | |
1942 | /* This symbol needs a copy reloc. Set it up. */ | |
90ace9e9 JT |
1943 | BFD_ASSERT (h->dynindx != -1 |
1944 | && (h->root.type == bfd_link_hash_defined | |
1945 | || h->root.type == bfd_link_hash_defweak)); | |
1946 | ||
1947 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1948 | ".rela.bss"); | |
1949 | BFD_ASSERT (s != NULL); | |
1950 | ||
1951 | rela.r_offset = (h->root.u.def.value | |
1952 | + h->root.u.def.section->output_section->vma | |
1953 | + h->root.u.def.section->output_offset); | |
1954 | rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY); | |
1955 | rela.r_addend = 0; | |
947216bf AM |
1956 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1957 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
90ace9e9 JT |
1958 | } |
1959 | ||
1960 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1961 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 1962 | || h == elf_hash_table (info)->hgot) |
90ace9e9 JT |
1963 | sym->st_shndx = SHN_ABS; |
1964 | ||
b34976b6 | 1965 | return TRUE; |
90ace9e9 JT |
1966 | } |
1967 | ||
1968 | /* Finish up the dynamic sections. */ | |
1969 | ||
b34976b6 | 1970 | static bfd_boolean |
ce71b576 | 1971 | elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
90ace9e9 JT |
1972 | { |
1973 | bfd *dynobj; | |
1974 | asection *sgot; | |
1975 | asection *sdyn; | |
1976 | ||
1977 | dynobj = elf_hash_table (info)->dynobj; | |
1978 | ||
1979 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1980 | BFD_ASSERT (sgot != NULL); | |
1981 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1982 | ||
1983 | if (elf_hash_table (info)->dynamic_sections_created) | |
1984 | { | |
1985 | asection *splt; | |
1986 | Elf32_External_Dyn *dyncon, *dynconend; | |
1987 | ||
1988 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1989 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1990 | ||
1991 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1992 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
90ace9e9 JT |
1993 | for (; dyncon < dynconend; dyncon++) |
1994 | { | |
1995 | Elf_Internal_Dyn dyn; | |
1996 | const char *name; | |
1997 | asection *s; | |
1998 | ||
1999 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2000 | ||
2001 | switch (dyn.d_tag) | |
2002 | { | |
2003 | default: | |
2004 | break; | |
2005 | ||
2006 | case DT_PLTGOT: | |
2007 | name = ".got"; | |
2008 | goto get_vma; | |
2009 | case DT_JMPREL: | |
2010 | name = ".rela.plt"; | |
2011 | get_vma: | |
2012 | s = bfd_get_section_by_name (output_bfd, name); | |
2013 | BFD_ASSERT (s != NULL); | |
2014 | dyn.d_un.d_ptr = s->vma; | |
2015 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2016 | break; | |
2017 | ||
2018 | case DT_PLTRELSZ: | |
2019 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2020 | BFD_ASSERT (s != NULL); | |
eea6121a | 2021 | dyn.d_un.d_val = s->size; |
90ace9e9 JT |
2022 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2023 | break; | |
2024 | ||
2025 | case DT_RELASZ: | |
2026 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2027 | not be included in the overall relocs (DT_RELA). | |
2028 | Therefore, we override the DT_RELASZ entry here to | |
2029 | make it not include the JMPREL relocs. Since the | |
2030 | linker script arranges for .rela.plt to follow all | |
2031 | other relocation sections, we don't have to worry | |
2032 | about changing the DT_RELA entry. */ | |
2033 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2034 | if (s != NULL) | |
eea6121a | 2035 | dyn.d_un.d_val -= s->size; |
90ace9e9 JT |
2036 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2037 | break; | |
2038 | } | |
2039 | } | |
2040 | ||
2041 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2042 | if (splt->size > 0) |
90ace9e9 JT |
2043 | { |
2044 | memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE); | |
2045 | bfd_put_32 (output_bfd, | |
2046 | (sgot->output_section->vma | |
2047 | + sgot->output_offset + 4 | |
2048 | - (splt->output_section->vma + 6)), | |
2049 | splt->contents + 2); | |
2050 | bfd_put_32 (output_bfd, | |
2051 | (sgot->output_section->vma | |
2052 | + sgot->output_offset + 8 | |
2053 | - (splt->output_section->vma + 12)), | |
2054 | splt->contents + 8); | |
cedb70c5 | 2055 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
90ace9e9 JT |
2056 | = PLT_ENTRY_SIZE; |
2057 | } | |
2058 | } | |
2059 | ||
2060 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2061 | if (sgot->size > 0) |
90ace9e9 JT |
2062 | { |
2063 | if (sdyn == NULL) | |
2064 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2065 | else | |
2066 | bfd_put_32 (output_bfd, | |
2067 | sdyn->output_section->vma + sdyn->output_offset, | |
2068 | sgot->contents); | |
2069 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2070 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2071 | } | |
2072 | ||
2073 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2074 | ||
b34976b6 | 2075 | return TRUE; |
90ace9e9 JT |
2076 | } |
2077 | ||
9b90d8fd MR |
2078 | static enum elf_reloc_type_class |
2079 | elf_vax_reloc_type_class (const Elf_Internal_Rela *rela) | |
2080 | { | |
2081 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2082 | { | |
2083 | case R_VAX_RELATIVE: | |
2084 | return reloc_class_relative; | |
2085 | case R_VAX_JMP_SLOT: | |
2086 | return reloc_class_plt; | |
2087 | case R_VAX_COPY: | |
2088 | return reloc_class_copy; | |
2089 | default: | |
2090 | return reloc_class_normal; | |
2091 | } | |
2092 | } | |
2093 | ||
90ace9e9 JT |
2094 | #define TARGET_LITTLE_SYM bfd_elf32_vax_vec |
2095 | #define TARGET_LITTLE_NAME "elf32-vax" | |
2096 | #define ELF_MACHINE_CODE EM_VAX | |
2097 | #define ELF_MAXPAGESIZE 0x1000 | |
2098 | ||
2099 | #define elf_backend_create_dynamic_sections \ | |
2100 | _bfd_elf_create_dynamic_sections | |
2101 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2102 | elf_vax_link_hash_table_create | |
c152c796 | 2103 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link |
90ace9e9 JT |
2104 | |
2105 | #define elf_backend_check_relocs elf_vax_check_relocs | |
2106 | #define elf_backend_adjust_dynamic_symbol \ | |
2107 | elf_vax_adjust_dynamic_symbol | |
2108 | #define elf_backend_size_dynamic_sections \ | |
2109 | elf_vax_size_dynamic_sections | |
74541ad4 | 2110 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
90ace9e9 JT |
2111 | #define elf_backend_relocate_section elf_vax_relocate_section |
2112 | #define elf_backend_finish_dynamic_symbol \ | |
2113 | elf_vax_finish_dynamic_symbol | |
2114 | #define elf_backend_finish_dynamic_sections \ | |
2115 | elf_vax_finish_dynamic_sections | |
9b90d8fd | 2116 | #define elf_backend_reloc_type_class elf_vax_reloc_type_class |
90ace9e9 JT |
2117 | #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook |
2118 | #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook | |
2119 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2120 | elf32_vax_merge_private_bfd_data | |
2121 | #define bfd_elf32_bfd_set_private_flags \ | |
2122 | elf32_vax_set_private_flags | |
2123 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2124 | elf32_vax_print_private_bfd_data | |
2125 | ||
2126 | #define elf_backend_can_gc_sections 1 | |
2127 | #define elf_backend_want_got_plt 1 | |
2128 | #define elf_backend_plt_readonly 1 | |
2129 | #define elf_backend_want_plt_sym 0 | |
2130 | #define elf_backend_got_header_size 16 | |
f0fe0e16 | 2131 | #define elf_backend_rela_normal 1 |
90ace9e9 JT |
2132 | |
2133 | #include "elf32-target.h" |