Commit | Line | Data |
---|---|---|
5b93d8bb AM |
1 | /* i370-specific support for 32-bit ELF |
2 | Copyright 1994, 95, 96, 97, 98, 2000 Free Software Foundation, Inc. | |
3 | Written by Ian Lance Taylor, Cygnus Support. | |
4 | Hacked by Linas Vepstas for i370 linas@linas.org | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
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. | |
17 | ||
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 | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | ||
23 | ||
24 | /* This file is based on a preliminary PowerPC ELF ABI. | |
25 | But its been hacked on for the IBM 360/370 architectures. | |
26 | Basically, the 31bit relocation works, and just about everything | |
27 | else is a wild card. In particular, don't expect shared libs or | |
28 | dynamic loading to work ... its never been tested ... | |
29 | */ | |
30 | ||
31 | ||
32 | #include "bfd.h" | |
33 | #include "sysdep.h" | |
34 | #include "bfdlink.h" | |
35 | #include "libbfd.h" | |
36 | #include "elf-bfd.h" | |
37 | #include "elf/i370.h" | |
38 | ||
39 | #define USE_RELA /* we want RELA relocations, not REL */ | |
40 | ||
41 | /* i370 relocations */ | |
42 | /* Note that there is really just one relocation that we currently | |
43 | * support (and only one that we seem to need, at the moment), and | |
44 | * that is the 31-bit address relocation. Note that the 370/390 | |
45 | * only supports a 31-bit (2GB) address space. | |
46 | */ | |
47 | enum i370_reloc_type | |
48 | { | |
49 | R_I370_NONE = 0, | |
50 | R_I370_ADDR31 = 1, | |
51 | R_I370_ADDR32 = 2, | |
52 | R_I370_ADDR16 = 3, | |
53 | R_I370_REL31 = 4, | |
54 | R_I370_REL32 = 5, | |
55 | R_I370_ADDR12 = 6, | |
56 | R_I370_REL12 = 7, | |
57 | R_I370_ADDR8 = 8, | |
58 | R_I370_REL8 = 9, | |
59 | R_I370_COPY = 10, | |
60 | R_I370_RELATIVE = 11, | |
61 | ||
62 | R_I370_max | |
63 | }; | |
64 | ||
65 | \f | |
66 | static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ]; | |
67 | ||
68 | static reloc_howto_type i370_elf_howto_raw[] = | |
69 | { | |
70 | /* This reloc does nothing. */ | |
71 | HOWTO (R_I370_NONE, /* type */ | |
72 | 0, /* rightshift */ | |
73 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
74 | 32, /* bitsize */ | |
75 | false, /* pc_relative */ | |
76 | 0, /* bitpos */ | |
77 | complain_overflow_bitfield, /* complain_on_overflow */ | |
78 | bfd_elf_generic_reloc, /* special_function */ | |
79 | "R_I370_NONE", /* name */ | |
80 | false, /* partial_inplace */ | |
81 | 0, /* src_mask */ | |
82 | 0, /* dst_mask */ | |
83 | false), /* pcrel_offset */ | |
84 | ||
85 | /* A standard 31 bit relocation. */ | |
86 | HOWTO (R_I370_ADDR31, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 31, /* bitsize */ | |
90 | false, /* pc_relative */ | |
91 | 0, /* bitpos */ | |
92 | complain_overflow_bitfield, /* complain_on_overflow */ | |
93 | bfd_elf_generic_reloc, /* special_function */ | |
94 | "R_I370_ADDR31", /* name */ | |
95 | false, /* partial_inplace */ | |
96 | 0, /* src_mask */ | |
97 | 0x7fffffff, /* dst_mask */ | |
98 | false), /* pcrel_offset */ | |
99 | ||
100 | /* A standard 32 bit relocation. */ | |
101 | HOWTO (R_I370_ADDR32, /* type */ | |
102 | 0, /* rightshift */ | |
103 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
104 | 32, /* bitsize */ | |
105 | false, /* pc_relative */ | |
106 | 0, /* bitpos */ | |
107 | complain_overflow_bitfield, /* complain_on_overflow */ | |
108 | bfd_elf_generic_reloc, /* special_function */ | |
109 | "R_I370_ADDR32", /* name */ | |
110 | false, /* partial_inplace */ | |
111 | 0, /* src_mask */ | |
112 | 0xffffffff, /* dst_mask */ | |
113 | false), /* pcrel_offset */ | |
114 | ||
115 | /* A standard 16 bit relocation. */ | |
116 | HOWTO (R_I370_ADDR16, /* type */ | |
117 | 0, /* rightshift */ | |
118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
119 | 16, /* bitsize */ | |
120 | false, /* pc_relative */ | |
121 | 0, /* bitpos */ | |
122 | complain_overflow_bitfield, /* complain_on_overflow */ | |
123 | bfd_elf_generic_reloc, /* special_function */ | |
124 | "R_I370_ADDR16", /* name */ | |
125 | false, /* partial_inplace */ | |
126 | 0, /* src_mask */ | |
127 | 0xffff, /* dst_mask */ | |
128 | false), /* pcrel_offset */ | |
129 | ||
130 | /* 31-bit PC relative */ | |
131 | HOWTO (R_I370_REL31, /* type */ | |
132 | 0, /* rightshift */ | |
133 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
134 | 31, /* bitsize */ | |
135 | true, /* pc_relative */ | |
136 | 0, /* bitpos */ | |
137 | complain_overflow_bitfield, /* complain_on_overflow */ | |
138 | bfd_elf_generic_reloc, /* special_function */ | |
139 | "R_I370_REL31", /* name */ | |
140 | false, /* partial_inplace */ | |
141 | 0, /* src_mask */ | |
142 | 0x7fffffff, /* dst_mask */ | |
143 | true), /* pcrel_offset */ | |
144 | ||
145 | /* 32-bit PC relative */ | |
146 | HOWTO (R_I370_REL32, /* type */ | |
147 | 0, /* rightshift */ | |
148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
149 | 32, /* bitsize */ | |
150 | true, /* pc_relative */ | |
151 | 0, /* bitpos */ | |
152 | complain_overflow_bitfield, /* complain_on_overflow */ | |
153 | bfd_elf_generic_reloc, /* special_function */ | |
154 | "R_I370_REL32", /* name */ | |
155 | false, /* partial_inplace */ | |
156 | 0, /* src_mask */ | |
157 | 0xffffffff, /* dst_mask */ | |
158 | true), /* pcrel_offset */ | |
159 | ||
160 | /* A standard 12 bit relocation. */ | |
161 | HOWTO (R_I370_ADDR12, /* type */ | |
162 | 0, /* rightshift */ | |
163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
164 | 12, /* bitsize */ | |
165 | false, /* pc_relative */ | |
166 | 0, /* bitpos */ | |
167 | complain_overflow_bitfield, /* complain_on_overflow */ | |
168 | bfd_elf_generic_reloc, /* special_function */ | |
169 | "R_I370_ADDR12", /* name */ | |
170 | false, /* partial_inplace */ | |
171 | 0, /* src_mask */ | |
172 | 0xfff, /* dst_mask */ | |
173 | false), /* pcrel_offset */ | |
174 | ||
175 | /* 12-bit PC relative */ | |
176 | HOWTO (R_I370_REL12, /* type */ | |
177 | 0, /* rightshift */ | |
178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
179 | 12, /* bitsize */ | |
180 | true, /* pc_relative */ | |
181 | 0, /* bitpos */ | |
182 | complain_overflow_bitfield, /* complain_on_overflow */ | |
183 | bfd_elf_generic_reloc, /* special_function */ | |
184 | "R_I370_REL12", /* name */ | |
185 | false, /* partial_inplace */ | |
186 | 0, /* src_mask */ | |
187 | 0xfff, /* dst_mask */ | |
188 | true), /* pcrel_offset */ | |
189 | ||
190 | /* A standard 8 bit relocation. */ | |
191 | HOWTO (R_I370_ADDR8, /* type */ | |
192 | 0, /* rightshift */ | |
193 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
194 | 8, /* bitsize */ | |
195 | false, /* pc_relative */ | |
196 | 0, /* bitpos */ | |
197 | complain_overflow_bitfield, /* complain_on_overflow */ | |
198 | bfd_elf_generic_reloc, /* special_function */ | |
199 | "R_I370_ADDR8", /* name */ | |
200 | false, /* partial_inplace */ | |
201 | 0, /* src_mask */ | |
202 | 0xff, /* dst_mask */ | |
203 | false), /* pcrel_offset */ | |
204 | ||
205 | /* 8-bit PC relative */ | |
206 | HOWTO (R_I370_REL8, /* type */ | |
207 | 0, /* rightshift */ | |
208 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
209 | 8, /* bitsize */ | |
210 | true, /* pc_relative */ | |
211 | 0, /* bitpos */ | |
212 | complain_overflow_bitfield, /* complain_on_overflow */ | |
213 | bfd_elf_generic_reloc, /* special_function */ | |
214 | "R_I370_REL8", /* name */ | |
215 | false, /* partial_inplace */ | |
216 | 0, /* src_mask */ | |
217 | 0xff, /* dst_mask */ | |
218 | true), /* pcrel_offset */ | |
219 | ||
220 | /* This is used only by the dynamic linker. The symbol should exist | |
221 | both in the object being run and in some shared library. The | |
222 | dynamic linker copies the data addressed by the symbol from the | |
223 | shared library into the object, because the object being | |
224 | run has to have the data at some particular address. */ | |
225 | HOWTO (R_I370_COPY, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 32, /* bitsize */ | |
229 | false, /* pc_relative */ | |
230 | 0, /* bitpos */ | |
231 | complain_overflow_bitfield, /* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_I370_COPY", /* name */ | |
234 | false, /* partial_inplace */ | |
235 | 0, /* src_mask */ | |
236 | 0, /* dst_mask */ | |
237 | false), /* pcrel_offset */ | |
238 | ||
239 | /* Used only by the dynamic linker. When the object is run, this | |
240 | longword is set to the load address of the object, plus the | |
241 | addend. */ | |
242 | HOWTO (R_I370_RELATIVE, /* type */ | |
243 | 0, /* rightshift */ | |
244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
245 | 32, /* bitsize */ | |
246 | false, /* pc_relative */ | |
247 | 0, /* bitpos */ | |
248 | complain_overflow_bitfield, /* complain_on_overflow */ | |
249 | bfd_elf_generic_reloc, /* special_function */ | |
250 | "R_I370_RELATIVE", /* name */ | |
251 | false, /* partial_inplace */ | |
252 | 0, /* src_mask */ | |
253 | 0xffffffff, /* dst_mask */ | |
254 | false), /* pcrel_offset */ | |
255 | ||
256 | }; | |
257 | ||
258 | \f | |
259 | static void i370_elf_howto_init PARAMS ((void)); | |
260 | static void i370_elf_info_to_howto PARAMS ((bfd *abfd, arelent *cache_ptr, | |
261 | Elf32_Internal_Rela *dst)); | |
262 | static boolean i370_elf_set_private_flags PARAMS ((bfd *, flagword)); | |
263 | ||
264 | \f | |
265 | /* Initialize the i370_elf_howto_table, so that linear accesses can be done. */ | |
266 | ||
267 | static void | |
268 | i370_elf_howto_init () | |
269 | { | |
270 | unsigned int i, type; | |
271 | ||
272 | for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++) | |
273 | { | |
274 | type = i370_elf_howto_raw[i].type; | |
275 | BFD_ASSERT (type < sizeof(i370_elf_howto_table) / sizeof(i370_elf_howto_table[0])); | |
276 | i370_elf_howto_table[type] = &i370_elf_howto_raw[i]; | |
277 | } | |
278 | } | |
279 | ||
280 | \f | |
281 | static reloc_howto_type * | |
282 | i370_elf_reloc_type_lookup (abfd, code) | |
86033394 | 283 | bfd *abfd ATTRIBUTE_UNUSED; |
5b93d8bb AM |
284 | bfd_reloc_code_real_type code; |
285 | { | |
286 | enum i370_reloc_type i370_reloc = R_I370_NONE; | |
287 | ||
288 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ | |
289 | i370_elf_howto_init (); | |
290 | ||
291 | switch ((int)code) | |
292 | { | |
293 | default: | |
294 | return (reloc_howto_type *)NULL; | |
295 | ||
296 | case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; | |
297 | case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; | |
298 | case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break; | |
299 | case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break; | |
300 | case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break; | |
301 | case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break; | |
302 | } | |
303 | ||
304 | return i370_elf_howto_table[ (int)i370_reloc ]; | |
305 | }; | |
306 | ||
307 | static boolean i370_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); | |
308 | static boolean i370_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
309 | ||
310 | static boolean i370_elf_relocate_section PARAMS ((bfd *, | |
311 | struct bfd_link_info *info, | |
312 | bfd *, | |
313 | asection *, | |
314 | bfd_byte *, | |
315 | Elf_Internal_Rela *relocs, | |
316 | Elf_Internal_Sym *local_syms, | |
317 | asection **)); | |
318 | ||
319 | static boolean i370_elf_create_dynamic_sections PARAMS ((bfd *, | |
320 | struct bfd_link_info *)); | |
321 | ||
322 | static boolean i370_elf_section_from_shdr PARAMS ((bfd *, | |
323 | Elf32_Internal_Shdr *, | |
324 | char *)); | |
325 | static boolean i370_elf_fake_sections PARAMS ((bfd *, | |
326 | Elf32_Internal_Shdr *, | |
327 | asection *)); | |
86033394 | 328 | #if 0 |
5b93d8bb AM |
329 | static elf_linker_section_t *i370_elf_create_linker_section |
330 | PARAMS ((bfd *abfd, | |
331 | struct bfd_link_info *info, | |
332 | enum elf_linker_section_enum)); | |
86033394 | 333 | #endif |
5b93d8bb AM |
334 | static boolean i370_elf_check_relocs PARAMS ((bfd *, |
335 | struct bfd_link_info *, | |
336 | asection *, | |
337 | const Elf_Internal_Rela *)); | |
338 | ||
339 | static boolean i370_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, | |
340 | struct elf_link_hash_entry *)); | |
341 | ||
342 | static boolean i370_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR)); | |
343 | ||
344 | static boolean i370_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); | |
345 | ||
346 | static boolean i370_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); | |
347 | ||
348 | /* The name of the dynamic interpreter. This is put in the .interp | |
349 | section. */ | |
350 | ||
351 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so" | |
352 | ||
353 | ||
354 | /* Set the howto pointer for an i370 ELF reloc. */ | |
355 | ||
356 | static void | |
357 | i370_elf_info_to_howto (abfd, cache_ptr, dst) | |
86033394 | 358 | bfd *abfd ATTRIBUTE_UNUSED; |
5b93d8bb AM |
359 | arelent *cache_ptr; |
360 | Elf32_Internal_Rela *dst; | |
361 | { | |
362 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table */ | |
363 | i370_elf_howto_init (); | |
364 | ||
365 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_I370_max); | |
366 | cache_ptr->howto = i370_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
367 | } | |
368 | ||
369 | /* hack alert -- the following several routines look generic to me ... | |
370 | * why are we bothering with them ??? | |
371 | */ | |
372 | /* Function to set whether a module needs the -mrelocatable bit set. */ | |
373 | static boolean | |
374 | i370_elf_set_private_flags (abfd, flags) | |
375 | bfd *abfd; | |
376 | flagword flags; | |
377 | { | |
378 | BFD_ASSERT (!elf_flags_init (abfd) | |
379 | || elf_elfheader (abfd)->e_flags == flags); | |
380 | ||
381 | elf_elfheader (abfd)->e_flags = flags; | |
382 | elf_flags_init (abfd) = true; | |
383 | return true; | |
384 | } | |
385 | ||
386 | /* Copy backend specific data from one object module to another */ | |
387 | static boolean | |
388 | i370_elf_copy_private_bfd_data (ibfd, obfd) | |
389 | bfd *ibfd; | |
390 | bfd *obfd; | |
391 | { | |
392 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
393 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
394 | return true; | |
395 | ||
396 | BFD_ASSERT (!elf_flags_init (obfd) | |
397 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
398 | ||
399 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
400 | elf_flags_init (obfd) = true; | |
401 | return true; | |
402 | } | |
403 | ||
404 | /* Merge backend specific data from an object file to the output | |
405 | object file when linking */ | |
406 | static boolean | |
407 | i370_elf_merge_private_bfd_data (ibfd, obfd) | |
408 | bfd *ibfd; | |
409 | bfd *obfd; | |
410 | { | |
411 | flagword old_flags; | |
412 | flagword new_flags; | |
413 | ||
414 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
415 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
416 | return true; | |
417 | ||
418 | new_flags = elf_elfheader (ibfd)->e_flags; | |
419 | old_flags = elf_elfheader (obfd)->e_flags; | |
420 | if (!elf_flags_init (obfd)) /* First call, no flags set */ | |
421 | { | |
422 | elf_flags_init (obfd) = true; | |
423 | elf_elfheader (obfd)->e_flags = new_flags; | |
424 | } | |
425 | ||
426 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
427 | ; | |
428 | ||
429 | else /* Incompatible flags */ | |
430 | { | |
431 | (*_bfd_error_handler) | |
432 | ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", | |
433 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); | |
434 | ||
435 | bfd_set_error (bfd_error_bad_value); | |
436 | return false; | |
437 | } | |
438 | ||
439 | return true; | |
440 | } | |
441 | ||
442 | \f | |
443 | /* Handle an i370 specific section when reading an object file. This | |
444 | is called when elfcode.h finds a section with an unknown type. */ | |
445 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
446 | * certainly does the wrong thing. Its here simply because it does | |
447 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
448 | */ | |
449 | ||
450 | static boolean | |
451 | i370_elf_section_from_shdr (abfd, hdr, name) | |
452 | bfd *abfd; | |
453 | Elf32_Internal_Shdr *hdr; | |
454 | char *name; | |
455 | { | |
456 | asection *newsect; | |
457 | flagword flags; | |
458 | ||
459 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
460 | return false; | |
461 | ||
462 | newsect = hdr->bfd_section; | |
463 | flags = bfd_get_section_flags (abfd, newsect); | |
464 | if (hdr->sh_flags & SHF_EXCLUDE) | |
465 | flags |= SEC_EXCLUDE; | |
466 | ||
467 | if (hdr->sh_type == SHT_ORDERED) | |
468 | flags |= SEC_SORT_ENTRIES; | |
469 | ||
470 | bfd_set_section_flags (abfd, newsect, flags); | |
471 | return true; | |
472 | } | |
473 | ||
474 | ||
475 | \f | |
476 | /* Set up any other section flags and such that may be necessary. */ | |
477 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
478 | * certainly does the wrong thing. Its here simply because it does | |
479 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
480 | */ | |
481 | ||
482 | ||
483 | static boolean | |
484 | i370_elf_fake_sections (abfd, shdr, asect) | |
86033394 | 485 | bfd *abfd ATTRIBUTE_UNUSED; |
5b93d8bb AM |
486 | Elf32_Internal_Shdr *shdr; |
487 | asection *asect; | |
488 | { | |
489 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
490 | shdr->sh_flags |= SHF_EXCLUDE; | |
491 | ||
492 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
493 | shdr->sh_type = SHT_ORDERED; | |
494 | ||
495 | return true; | |
496 | } | |
497 | ||
498 | \f | |
86033394 | 499 | #if 0 |
5b93d8bb AM |
500 | /* Create a special linker section */ |
501 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
502 | * certainly does the wrong thing. Its here simply because it does | |
503 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
504 | */ | |
505 | ||
506 | static elf_linker_section_t * | |
507 | i370_elf_create_linker_section (abfd, info, which) | |
508 | bfd *abfd; | |
509 | struct bfd_link_info *info; | |
510 | enum elf_linker_section_enum which; | |
511 | { | |
512 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
513 | elf_linker_section_t *lsect; | |
514 | ||
515 | /* Record the first bfd section that needs the special section */ | |
516 | if (!dynobj) | |
517 | dynobj = elf_hash_table (info)->dynobj = abfd; | |
518 | ||
519 | /* If this is the first time, create the section */ | |
520 | lsect = elf_linker_section (dynobj, which); | |
521 | if (!lsect) | |
522 | { | |
523 | elf_linker_section_t defaults; | |
524 | static elf_linker_section_t zero_section; | |
525 | ||
526 | defaults = zero_section; | |
527 | defaults.which = which; | |
528 | defaults.hole_written_p = false; | |
529 | defaults.alignment = 2; | |
530 | ||
531 | /* Both of these sections are (technically) created by the user | |
532 | putting data in them, so they shouldn't be marked | |
533 | SEC_LINKER_CREATED. | |
534 | ||
535 | The linker creates them so it has somewhere to attach their | |
536 | respective symbols. In fact, if they were empty it would | |
537 | be OK to leave the symbol set to 0 (or any random number), because | |
538 | the appropriate register should never be used. */ | |
539 | defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
540 | | SEC_IN_MEMORY); | |
541 | ||
542 | switch (which) | |
543 | { | |
544 | default: | |
545 | (*_bfd_error_handler) ("%s: Unknown special linker type %d", | |
546 | bfd_get_filename (abfd), | |
547 | (int)which); | |
548 | ||
549 | bfd_set_error (bfd_error_bad_value); | |
550 | return (elf_linker_section_t *)0; | |
551 | ||
552 | case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ | |
553 | defaults.name = ".sdata"; | |
554 | defaults.rel_name = ".rela.sdata"; | |
555 | defaults.bss_name = ".sbss"; | |
556 | defaults.sym_name = "_SDA_BASE_"; | |
557 | defaults.sym_offset = 32768; | |
558 | break; | |
559 | ||
560 | case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ | |
561 | defaults.name = ".sdata2"; | |
562 | defaults.rel_name = ".rela.sdata2"; | |
563 | defaults.bss_name = ".sbss2"; | |
564 | defaults.sym_name = "_SDA2_BASE_"; | |
565 | defaults.sym_offset = 32768; | |
566 | defaults.flags |= SEC_READONLY; | |
567 | break; | |
568 | } | |
569 | ||
570 | lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); | |
571 | } | |
572 | ||
573 | return lsect; | |
574 | } | |
86033394 | 575 | #endif |
5b93d8bb AM |
576 | \f |
577 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped | |
578 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
579 | to create .dynbss and .rela.bss). */ | |
580 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
581 | * certainly does the wrong thing. Its here simply because it does | |
582 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
583 | */ | |
584 | ||
585 | static boolean | |
586 | i370_elf_create_dynamic_sections (abfd, info) | |
587 | bfd *abfd; | |
588 | struct bfd_link_info *info; | |
589 | { | |
590 | register asection *s; | |
591 | flagword flags; | |
592 | ||
593 | if (!_bfd_elf_create_dynamic_sections(abfd, info)) | |
594 | return false; | |
595 | ||
596 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
597 | | SEC_LINKER_CREATED); | |
598 | ||
599 | s = bfd_make_section (abfd, ".dynsbss"); | |
600 | if (s == NULL | |
601 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
602 | return false; | |
603 | ||
604 | if (! info->shared) | |
605 | { | |
606 | s = bfd_make_section (abfd, ".rela.sbss"); | |
607 | if (s == NULL | |
608 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
609 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
610 | return false; | |
611 | } | |
612 | ||
613 | /* xxx beats me, seem to need a rela.text ... */ | |
614 | s = bfd_make_section (abfd, ".rela.text"); | |
615 | if (s == NULL | |
616 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
617 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
618 | return false; | |
619 | return true; | |
620 | } | |
621 | ||
622 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
623 | regular object. The current definition is in some section of the | |
624 | dynamic object, but we're not including those sections. We have to | |
625 | change the definition to something the rest of the link can | |
626 | understand. */ | |
627 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
628 | * certainly does the wrong thing. Its here simply because it does | |
629 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
630 | */ | |
631 | ||
632 | static boolean | |
633 | i370_elf_adjust_dynamic_symbol (info, h) | |
634 | struct bfd_link_info *info; | |
635 | struct elf_link_hash_entry *h; | |
636 | { | |
637 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
638 | asection *s; | |
639 | unsigned int power_of_two; | |
5b93d8bb AM |
640 | |
641 | #ifdef DEBUG | |
642 | fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n", | |
643 | h->root.root.string); | |
644 | #endif | |
645 | ||
646 | /* Make sure we know what is going on here. */ | |
647 | BFD_ASSERT (dynobj != NULL | |
648 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
649 | || h->weakdef != NULL | |
650 | || ((h->elf_link_hash_flags | |
651 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
652 | && (h->elf_link_hash_flags | |
653 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
654 | && (h->elf_link_hash_flags | |
655 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
656 | ||
657 | ||
658 | s = bfd_get_section_by_name (dynobj, ".rela.text"); | |
659 | BFD_ASSERT (s != NULL); | |
660 | s->_raw_size += sizeof (Elf32_External_Rela); | |
661 | ||
662 | /* If this is a weak symbol, and there is a real definition, the | |
663 | processor independent code will have arranged for us to see the | |
664 | real definition first, and we can just use the same value. */ | |
665 | if (h->weakdef != NULL) | |
666 | { | |
667 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
668 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
669 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
670 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
671 | return true; | |
672 | } | |
673 | ||
674 | /* This is a reference to a symbol defined by a dynamic object which | |
675 | is not a function. */ | |
676 | ||
677 | /* If we are creating a shared library, we must presume that the | |
678 | only references to the symbol are via the global offset table. | |
679 | For such cases we need not do anything here; the relocations will | |
680 | be handled correctly by relocate_section. */ | |
681 | if (info->shared) | |
682 | return true; | |
683 | ||
684 | /* We must allocate the symbol in our .dynbss section, which will | |
685 | become part of the .bss section of the executable. There will be | |
686 | an entry for this symbol in the .dynsym section. The dynamic | |
687 | object will contain position independent code, so all references | |
688 | from the dynamic object to this symbol will go through the global | |
689 | offset table. The dynamic linker will use the .dynsym entry to | |
690 | determine the address it must put in the global offset table, so | |
691 | both the dynamic object and the regular object will refer to the | |
692 | same memory location for the variable. | |
693 | ||
694 | Of course, if the symbol is sufficiently small, we must instead | |
695 | allocate it in .sbss. FIXME: It would be better to do this if and | |
696 | only if there were actually SDAREL relocs for that symbol. */ | |
697 | ||
698 | if (h->size <= elf_gp_size (dynobj)) | |
699 | s = bfd_get_section_by_name (dynobj, ".dynsbss"); | |
700 | else | |
701 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
702 | BFD_ASSERT (s != NULL); | |
703 | ||
704 | /* We must generate a R_I370_COPY reloc to tell the dynamic linker to | |
705 | copy the initial value out of the dynamic object and into the | |
706 | runtime process image. We need to remember the offset into the | |
707 | .rela.bss section we are going to use. */ | |
708 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
709 | { | |
710 | asection *srel; | |
711 | ||
712 | if (h->size <= elf_gp_size (dynobj)) | |
713 | srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); | |
714 | else | |
715 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
716 | BFD_ASSERT (srel != NULL); | |
717 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
718 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
719 | } | |
720 | ||
721 | /* We need to figure out the alignment required for this symbol. I | |
722 | have no idea how ELF linkers handle this. */ | |
723 | power_of_two = bfd_log2 (h->size); | |
724 | if (power_of_two > 4) | |
725 | power_of_two = 4; | |
726 | ||
727 | /* Apply the required alignment. */ | |
728 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
729 | (bfd_size_type) (1 << power_of_two)); | |
730 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
731 | { | |
732 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
733 | return false; | |
734 | } | |
735 | ||
736 | /* Define the symbol as being at this point in the section. */ | |
737 | h->root.u.def.section = s; | |
738 | h->root.u.def.value = s->_raw_size; | |
739 | ||
740 | /* Increment the section size to make room for the symbol. */ | |
741 | s->_raw_size += h->size; | |
742 | ||
743 | return true; | |
744 | } | |
745 | ||
746 | \f | |
747 | /* Increment the index of a dynamic symbol by a given amount. Called | |
748 | via elf_link_hash_traverse. */ | |
749 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
750 | * certainly does the wrong thing. Its here simply because it does | |
751 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
752 | */ | |
753 | ||
754 | static boolean | |
755 | i370_elf_adjust_dynindx (h, cparg) | |
756 | struct elf_link_hash_entry *h; | |
757 | PTR cparg; | |
758 | { | |
759 | int *cp = (int *) cparg; | |
760 | ||
761 | #ifdef DEBUG | |
762 | fprintf (stderr, | |
763 | "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", | |
764 | h->dynindx, *cp); | |
765 | #endif | |
766 | ||
767 | if (h->dynindx != -1) | |
768 | h->dynindx += *cp; | |
769 | ||
770 | return true; | |
771 | } | |
772 | ||
773 | \f | |
774 | /* Set the sizes of the dynamic sections. */ | |
775 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
776 | * certainly does the wrong thing. Its here simply because it does | |
777 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
778 | */ | |
779 | ||
780 | static boolean | |
781 | i370_elf_size_dynamic_sections (output_bfd, info) | |
782 | bfd *output_bfd; | |
783 | struct bfd_link_info *info; | |
784 | { | |
785 | bfd *dynobj; | |
786 | asection *s; | |
787 | boolean plt; | |
788 | boolean relocs; | |
789 | boolean reltext; | |
790 | ||
791 | #ifdef DEBUG | |
792 | fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); | |
793 | #endif | |
794 | ||
795 | dynobj = elf_hash_table (info)->dynobj; | |
796 | BFD_ASSERT (dynobj != NULL); | |
797 | ||
798 | if (elf_hash_table (info)->dynamic_sections_created) | |
799 | { | |
800 | /* Set the contents of the .interp section to the interpreter. */ | |
801 | if (! info->shared) | |
802 | { | |
803 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
804 | BFD_ASSERT (s != NULL); | |
805 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
806 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
807 | } | |
808 | } | |
809 | else | |
810 | { | |
811 | /* We may have created entries in the .rela.got, .rela.sdata, and | |
812 | .rela.sdata2 sections. However, if we are not creating the | |
813 | dynamic sections, we will not actually use these entries. Reset | |
814 | the size of .rela.got, et al, which will cause it to get | |
815 | stripped from the output file below. */ | |
816 | static char *rela_sections[] = { ".rela.got", ".rela.sdata", | |
817 | ".rela.sdata2", ".rela.sbss", | |
818 | (char *)0 }; | |
819 | char **p; | |
820 | ||
821 | for (p = rela_sections; *p != (char *)0; p++) | |
822 | { | |
823 | s = bfd_get_section_by_name (dynobj, *p); | |
824 | if (s != NULL) | |
825 | s->_raw_size = 0; | |
826 | } | |
827 | } | |
828 | ||
829 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
830 | determined the sizes of the various dynamic sections. Allocate | |
831 | memory for them. */ | |
832 | plt = false; | |
833 | relocs = false; | |
834 | reltext = false; | |
835 | for (s = dynobj->sections; s != NULL; s = s->next) | |
836 | { | |
837 | const char *name; | |
838 | boolean strip; | |
839 | ||
840 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
841 | continue; | |
842 | ||
843 | /* It's OK to base decisions on the section name, because none | |
844 | of the dynobj section names depend upon the input files. */ | |
845 | name = bfd_get_section_name (dynobj, s); | |
846 | strip = false; | |
847 | ||
848 | if (strcmp (name, ".plt") == 0) | |
849 | { | |
850 | if (s->_raw_size == 0) | |
851 | { | |
852 | /* Strip this section if we don't need it; see the | |
853 | comment below. */ | |
854 | strip = true; | |
855 | } | |
856 | else | |
857 | { | |
858 | /* Remember whether there is a PLT. */ | |
859 | plt = true; | |
860 | } | |
861 | } | |
862 | else if (strncmp (name, ".rela", 5) == 0) | |
863 | { | |
864 | if (s->_raw_size == 0) | |
865 | { | |
866 | /* If we don't need this section, strip it from the | |
867 | output file. This is mostly to handle .rela.bss and | |
868 | .rela.plt. We must create both sections in | |
869 | create_dynamic_sections, because they must be created | |
870 | before the linker maps input sections to output | |
871 | sections. The linker does that before | |
872 | adjust_dynamic_symbol is called, and it is that | |
873 | function which decides whether anything needs to go | |
874 | into these sections. */ | |
875 | strip = true; | |
876 | } | |
877 | else | |
878 | { | |
879 | asection *target; | |
880 | const char *outname; | |
881 | ||
882 | /* Remember whether there are any relocation sections. */ | |
883 | relocs = true; | |
884 | ||
885 | /* If this relocation section applies to a read only | |
886 | section, then we probably need a DT_TEXTREL entry. */ | |
887 | outname = bfd_get_section_name (output_bfd, | |
888 | s->output_section); | |
889 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
890 | if (target != NULL | |
891 | && (target->flags & SEC_READONLY) != 0 | |
892 | && (target->flags & SEC_ALLOC) != 0) | |
893 | reltext = true; | |
894 | ||
895 | /* We use the reloc_count field as a counter if we need | |
896 | to copy relocs into the output file. */ | |
897 | s->reloc_count = 0; | |
898 | } | |
899 | } | |
900 | else if (strcmp (name, ".got") != 0 | |
901 | && strcmp (name, ".sdata") != 0 | |
902 | && strcmp (name, ".sdata2") != 0) | |
903 | { | |
904 | /* It's not one of our sections, so don't allocate space. */ | |
905 | continue; | |
906 | } | |
907 | ||
908 | if (strip) | |
909 | { | |
910 | asection **spp; | |
911 | ||
912 | for (spp = &s->output_section->owner->sections; | |
913 | *spp != s->output_section; | |
914 | spp = &(*spp)->next) | |
915 | ; | |
916 | *spp = s->output_section->next; | |
917 | --s->output_section->owner->section_count; | |
918 | ||
919 | continue; | |
920 | } | |
921 | /* Allocate memory for the section contents. */ | |
922 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
923 | if (s->contents == NULL && s->_raw_size != 0) | |
924 | return false; | |
925 | } | |
926 | ||
927 | if (elf_hash_table (info)->dynamic_sections_created) | |
928 | { | |
929 | /* Add some entries to the .dynamic section. We fill in the | |
930 | values later, in i370_elf_finish_dynamic_sections, but we | |
931 | must add the entries now so that we get the correct size for | |
932 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
933 | dynamic linker and used by the debugger. */ | |
934 | if (! info->shared) | |
935 | { | |
936 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
937 | return false; | |
938 | } | |
939 | ||
940 | if (plt) | |
941 | { | |
942 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) | |
943 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
944 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
945 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
946 | return false; | |
947 | } | |
948 | ||
949 | if (relocs) | |
950 | { | |
951 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
952 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
953 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
954 | sizeof (Elf32_External_Rela))) | |
955 | return false; | |
956 | } | |
957 | ||
958 | if (reltext) | |
959 | { | |
960 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
961 | return false; | |
d6cf2879 | 962 | info->flags |= DF_TEXTREL; |
5b93d8bb AM |
963 | } |
964 | } | |
965 | ||
966 | /* If we are generating a shared library, we generate a section | |
967 | symbol for each output section. These are local symbols, which | |
968 | means that they must come first in the dynamic symbol table. | |
969 | That means we must increment the dynamic symbol index of every | |
970 | other dynamic symbol. | |
971 | ||
972 | FIXME: We assume that there will never be relocations to | |
973 | locations in linker-created sections that do not have | |
974 | externally-visible names. Instead, we should work out precisely | |
975 | which sections relocations are targetted at. */ | |
976 | if (info->shared) | |
977 | { | |
978 | int c; | |
979 | ||
980 | for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) | |
981 | { | |
982 | if ((s->flags & SEC_LINKER_CREATED) != 0 | |
983 | || (s->flags & SEC_ALLOC) == 0) | |
984 | { | |
985 | elf_section_data (s)->dynindx = -1; | |
986 | continue; | |
987 | } | |
988 | ||
989 | /* These symbols will have no names, so we don't need to | |
990 | fiddle with dynstr_index. */ | |
991 | ||
992 | elf_section_data (s)->dynindx = c + 1; | |
993 | ||
994 | c++; | |
995 | } | |
996 | ||
997 | elf_link_hash_traverse (elf_hash_table (info), | |
998 | i370_elf_adjust_dynindx, | |
999 | (PTR) &c); | |
1000 | elf_hash_table (info)->dynsymcount += c; | |
1001 | } | |
1002 | ||
1003 | return true; | |
1004 | } | |
1005 | ||
1006 | \f | |
1007 | /* Look through the relocs for a section during the first phase, and | |
1008 | allocate space in the global offset table or procedure linkage | |
1009 | table. */ | |
1010 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
1011 | * certainly does the wrong thing. Its here simply because it does | |
1012 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
1013 | */ | |
1014 | ||
1015 | static boolean | |
1016 | i370_elf_check_relocs (abfd, info, sec, relocs) | |
1017 | bfd *abfd; | |
1018 | struct bfd_link_info *info; | |
1019 | asection *sec; | |
1020 | const Elf_Internal_Rela *relocs; | |
1021 | { | |
1022 | bfd *dynobj; | |
1023 | Elf_Internal_Shdr *symtab_hdr; | |
1024 | struct elf_link_hash_entry **sym_hashes; | |
1025 | const Elf_Internal_Rela *rel; | |
1026 | const Elf_Internal_Rela *rel_end; | |
1027 | bfd_vma *local_got_offsets; | |
5b93d8bb | 1028 | asection *sreloc; |
5b93d8bb AM |
1029 | |
1030 | if (info->relocateable) | |
1031 | return true; | |
1032 | ||
1033 | #ifdef DEBUG | |
1034 | fprintf (stderr, "i370_elf_check_relocs called for section %s in %s\n", | |
1035 | bfd_get_section_name (abfd, sec), | |
1036 | bfd_get_filename (abfd)); | |
1037 | #endif | |
1038 | ||
1039 | dynobj = elf_hash_table (info)->dynobj; | |
1040 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1041 | sym_hashes = elf_sym_hashes (abfd); | |
1042 | local_got_offsets = elf_local_got_offsets (abfd); | |
1043 | ||
1044 | sreloc = NULL; | |
1045 | ||
1046 | rel_end = relocs + sec->reloc_count; | |
1047 | for (rel = relocs; rel < rel_end; rel++) | |
1048 | { | |
1049 | unsigned long r_symndx; | |
1050 | struct elf_link_hash_entry *h; | |
1051 | ||
1052 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1053 | if (r_symndx < symtab_hdr->sh_info) | |
1054 | h = NULL; | |
1055 | else | |
1056 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1057 | ||
1058 | if (info->shared) | |
1059 | { | |
1060 | #ifdef DEBUG | |
1061 | fprintf (stderr, | |
1062 | "i370_elf_check_relocs needs to create relocation for %s\n", | |
1063 | (h && h->root.root.string) | |
1064 | ? h->root.root.string : "<unknown>"); | |
1065 | #endif | |
1066 | if (sreloc == NULL) | |
1067 | { | |
1068 | const char *name; | |
1069 | ||
1070 | name = (bfd_elf_string_from_elf_section | |
1071 | (abfd, | |
1072 | elf_elfheader (abfd)->e_shstrndx, | |
1073 | elf_section_data (sec)->rel_hdr.sh_name)); | |
1074 | if (name == NULL) | |
1075 | return false; | |
1076 | ||
1077 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1078 | && strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0); | |
1079 | ||
1080 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1081 | if (sreloc == NULL) | |
1082 | { | |
1083 | flagword flags; | |
1084 | ||
1085 | sreloc = bfd_make_section (dynobj, name); | |
1086 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1087 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1088 | if ((sec->flags & SEC_ALLOC) != 0) | |
1089 | flags |= SEC_ALLOC | SEC_LOAD; | |
1090 | if (sreloc == NULL | |
1091 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1092 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
1093 | return false; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
1098 | ||
1099 | /* FIXME: We should here do what the m68k and i386 | |
1100 | backends do: if the reloc is pc-relative, record it | |
1101 | in case it turns out that the reloc is unnecessary | |
1102 | because the symbol is forced local by versioning or | |
1103 | we are linking with -Bdynamic. Fortunately this | |
1104 | case is not frequent. */ | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | return true; | |
1109 | } | |
1110 | ||
1111 | \f | |
1112 | /* Finish up the dynamic sections. */ | |
1113 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
1114 | * certainly does the wrong thing. Its here simply because it does | |
1115 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
1116 | */ | |
1117 | ||
1118 | static boolean | |
1119 | i370_elf_finish_dynamic_sections (output_bfd, info) | |
1120 | bfd *output_bfd; | |
1121 | struct bfd_link_info *info; | |
1122 | { | |
1123 | asection *sdyn; | |
1124 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
1125 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1126 | ||
1127 | #ifdef DEBUG | |
1128 | fprintf (stderr, "i370_elf_finish_dynamic_sections called\n"); | |
1129 | #endif | |
1130 | ||
1131 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1132 | ||
1133 | if (elf_hash_table (info)->dynamic_sections_created) | |
1134 | { | |
1135 | asection *splt; | |
1136 | Elf32_External_Dyn *dyncon, *dynconend; | |
1137 | ||
1138 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1139 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1140 | ||
1141 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1142 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
1143 | for (; dyncon < dynconend; dyncon++) | |
1144 | { | |
1145 | Elf_Internal_Dyn dyn; | |
1146 | const char *name; | |
1147 | boolean size; | |
1148 | ||
1149 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1150 | ||
1151 | switch (dyn.d_tag) | |
1152 | { | |
1153 | case DT_PLTGOT: name = ".plt"; size = false; break; | |
1154 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
1155 | case DT_JMPREL: name = ".rela.plt"; size = false; break; | |
1156 | default: name = NULL; size = false; break; | |
1157 | } | |
1158 | ||
1159 | if (name != NULL) | |
1160 | { | |
1161 | asection *s; | |
1162 | ||
1163 | s = bfd_get_section_by_name (output_bfd, name); | |
1164 | if (s == NULL) | |
1165 | dyn.d_un.d_val = 0; | |
1166 | else | |
1167 | { | |
1168 | if (! size) | |
1169 | dyn.d_un.d_ptr = s->vma; | |
1170 | else | |
1171 | { | |
1172 | if (s->_cooked_size != 0) | |
1173 | dyn.d_un.d_val = s->_cooked_size; | |
1174 | else | |
1175 | dyn.d_un.d_val = s->_raw_size; | |
1176 | } | |
1177 | } | |
1178 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can | |
1184 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
1185 | /* XXX this is clearly very wrong for the 370 arch */ | |
1186 | if (sgot) | |
1187 | { | |
1188 | unsigned char *contents = sgot->contents; | |
1189 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); | |
1190 | ||
1191 | if (sdyn == NULL) | |
1192 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); | |
1193 | else | |
1194 | bfd_put_32 (output_bfd, | |
1195 | sdyn->output_section->vma + sdyn->output_offset, | |
1196 | contents+4); | |
1197 | ||
1198 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1199 | } | |
1200 | ||
1201 | if (info->shared) | |
1202 | { | |
1203 | asection *sdynsym; | |
1204 | asection *s; | |
1205 | Elf_Internal_Sym sym; | |
1206 | int maxdindx = 0; | |
1207 | ||
1208 | /* Set up the section symbols for the output sections. */ | |
1209 | ||
1210 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
1211 | BFD_ASSERT (sdynsym != NULL); | |
1212 | ||
1213 | sym.st_size = 0; | |
1214 | sym.st_name = 0; | |
1215 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
1216 | sym.st_other = 0; | |
1217 | ||
1218 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
1219 | { | |
1220 | int indx, dindx; | |
1221 | ||
1222 | sym.st_value = s->vma; | |
1223 | ||
1224 | indx = elf_section_data (s)->this_idx; | |
1225 | dindx = elf_section_data (s)->dynindx; | |
1226 | if (dindx != -1) | |
1227 | { | |
1228 | BFD_ASSERT(indx > 0); | |
1229 | BFD_ASSERT(dindx > 0); | |
1230 | ||
1231 | if (dindx > maxdindx) | |
1232 | maxdindx = dindx; | |
1233 | ||
1234 | sym.st_shndx = indx; | |
1235 | ||
1236 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
1237 | (PTR) (((Elf32_External_Sym *) | |
1238 | sdynsym->contents) | |
1239 | + dindx)); | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | /* Set the sh_info field of the output .dynsym section to the | |
1244 | index of the first global symbol. */ | |
1245 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
1246 | maxdindx + 1; | |
1247 | } | |
1248 | ||
1249 | return true; | |
1250 | } | |
1251 | ||
1252 | \f | |
1253 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
1254 | to handle the relocations for a section. | |
1255 | ||
1256 | The relocs are always passed as Rela structures; if the section | |
1257 | actually uses Rel structures, the r_addend field will always be | |
1258 | zero. | |
1259 | ||
1260 | This function is responsible for adjust the section contents as | |
1261 | necessary, and (if using Rela relocs and generating a | |
1262 | relocateable output file) adjusting the reloc addend as | |
1263 | necessary. | |
1264 | ||
1265 | This function does not have to worry about setting the reloc | |
1266 | address or the reloc symbol index. | |
1267 | ||
1268 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1269 | ||
1270 | LOCAL_SECTIONS is an array giving the section in the input file | |
1271 | corresponding to the st_shndx field of each local symbol. | |
1272 | ||
1273 | The global hash table entry for the global symbols can be found | |
1274 | via elf_sym_hashes (input_bfd). | |
1275 | ||
1276 | When generating relocateable output, this function must handle | |
1277 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
1278 | going to be the section symbol corresponding to the output | |
1279 | section, which means that the addend must be adjusted | |
1280 | accordingly. */ | |
1281 | ||
1282 | static boolean | |
1283 | i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
1284 | contents, relocs, local_syms, local_sections) | |
1285 | bfd *output_bfd; | |
1286 | struct bfd_link_info *info; | |
1287 | bfd *input_bfd; | |
1288 | asection *input_section; | |
1289 | bfd_byte *contents; | |
1290 | Elf_Internal_Rela *relocs; | |
1291 | Elf_Internal_Sym *local_syms; | |
1292 | asection **local_sections; | |
1293 | { | |
1294 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1295 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
1296 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
1297 | Elf_Internal_Rela *rel = relocs; | |
1298 | Elf_Internal_Rela *relend = relocs + input_section->reloc_count; | |
1299 | asection *sreloc = NULL; | |
1300 | bfd_vma *local_got_offsets; | |
1301 | boolean ret = true; | |
1302 | ||
1303 | #ifdef DEBUG | |
1304 | fprintf (stderr, "i370_elf_relocate_section called for %s section %s, %ld relocations%s\n", | |
1305 | bfd_get_filename (input_bfd), | |
1306 | bfd_section_name(input_bfd, input_section), | |
1307 | (long)input_section->reloc_count, | |
1308 | (info->relocateable) ? " (relocatable)" : ""); | |
1309 | #endif | |
1310 | ||
1311 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ | |
1312 | i370_elf_howto_init (); | |
1313 | ||
1314 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1315 | ||
1316 | for (; rel < relend; rel++) | |
1317 | { | |
1318 | enum i370_reloc_type r_type = (enum i370_reloc_type)ELF32_R_TYPE (rel->r_info); | |
1319 | bfd_vma offset = rel->r_offset; | |
1320 | bfd_vma addend = rel->r_addend; | |
1321 | bfd_reloc_status_type r = bfd_reloc_other; | |
1322 | Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; | |
1323 | asection *sec = (asection *)0; | |
1324 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; | |
1325 | const char *sym_name = (const char *)0; | |
1326 | reloc_howto_type *howto; | |
1327 | unsigned long r_symndx; | |
1328 | bfd_vma relocation; | |
1329 | ||
1330 | /* Unknown relocation handling */ | |
1331 | if ((unsigned)r_type >= (unsigned)R_I370_max | |
1332 | || !i370_elf_howto_table[(int)r_type]) | |
1333 | { | |
1334 | (*_bfd_error_handler) ("%s: unknown relocation type %d", | |
1335 | bfd_get_filename (input_bfd), | |
1336 | (int)r_type); | |
1337 | ||
1338 | bfd_set_error (bfd_error_bad_value); | |
1339 | ret = false; | |
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | howto = i370_elf_howto_table[(int)r_type]; | |
1344 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1345 | ||
1346 | if (info->relocateable) | |
1347 | { | |
1348 | /* This is a relocateable link. We don't have to change | |
1349 | anything, unless the reloc is against a section symbol, | |
1350 | in which case we have to adjust according to where the | |
1351 | section symbol winds up in the output section. */ | |
1352 | if (r_symndx < symtab_hdr->sh_info) | |
1353 | { | |
1354 | sym = local_syms + r_symndx; | |
1355 | if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1356 | { | |
1357 | sec = local_sections[r_symndx]; | |
1358 | addend = rel->r_addend += sec->output_offset + sym->st_value; | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | #ifdef DEBUG | |
1363 | fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", | |
1364 | howto->name, | |
1365 | (int)r_type, | |
1366 | r_symndx, | |
1367 | (long)offset, | |
1368 | (long)addend); | |
1369 | #endif | |
1370 | continue; | |
1371 | } | |
1372 | ||
1373 | /* This is a final link. */ | |
1374 | if (r_symndx < symtab_hdr->sh_info) | |
1375 | { | |
1376 | sym = local_syms + r_symndx; | |
1377 | sec = local_sections[r_symndx]; | |
1378 | sym_name = "<local symbol>"; | |
1379 | ||
1380 | relocation = (sec->output_section->vma | |
1381 | + sec->output_offset | |
1382 | + sym->st_value); | |
1383 | } | |
1384 | else | |
1385 | { | |
1386 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1387 | while (h->root.type == bfd_link_hash_indirect | |
1388 | || h->root.type == bfd_link_hash_warning) | |
1389 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1390 | sym_name = h->root.root.string; | |
1391 | if (h->root.type == bfd_link_hash_defined | |
1392 | || h->root.type == bfd_link_hash_defweak) | |
1393 | { | |
1394 | sec = h->root.u.def.section; | |
1395 | if (info->shared | |
1396 | && ((! info->symbolic && h->dynindx != -1) | |
1397 | || (h->elf_link_hash_flags | |
1398 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1399 | && (input_section->flags & SEC_ALLOC) != 0 | |
1400 | && (r_type == R_I370_ADDR31 | |
1401 | || r_type == R_I370_COPY | |
1402 | || r_type == R_I370_ADDR16 | |
1403 | || r_type == R_I370_RELATIVE)) | |
1404 | { | |
1405 | /* In these cases, we don't need the relocation | |
1406 | value. We check specially because in some | |
1407 | obscure cases sec->output_section will be NULL. */ | |
1408 | relocation = 0; | |
1409 | } | |
1410 | else | |
1411 | relocation = (h->root.u.def.value | |
1412 | + sec->output_section->vma | |
1413 | + sec->output_offset); | |
1414 | } | |
1415 | else if (h->root.type == bfd_link_hash_undefweak) | |
1416 | relocation = 0; | |
3a27a730 L |
1417 | else if (info->shared |
1418 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5b93d8bb AM |
1419 | relocation = 0; |
1420 | else | |
1421 | { | |
1422 | (*info->callbacks->undefined_symbol)(info, | |
1423 | h->root.root.string, | |
1424 | input_bfd, | |
1425 | input_section, | |
5cc7c785 L |
1426 | rel->r_offset, |
1427 | true); | |
5b93d8bb AM |
1428 | ret = false; |
1429 | continue; | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | switch ((int)r_type) | |
1434 | { | |
1435 | default: | |
1436 | (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s", | |
1437 | bfd_get_filename (input_bfd), | |
1438 | (int)r_type, sym_name); | |
1439 | ||
1440 | bfd_set_error (bfd_error_bad_value); | |
1441 | ret = false; | |
1442 | continue; | |
1443 | ||
1444 | /* Relocations that may need to be propagated if this is a shared | |
1445 | object. */ | |
1446 | case (int)R_I370_REL31: | |
1447 | /* If these relocations are not to a named symbol, they can be | |
1448 | handled right here, no need to bother the dynamic linker. */ | |
1449 | if (h == NULL | |
1450 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1451 | break; | |
1452 | /* fall through */ | |
1453 | ||
1454 | /* Relocations that always need to be propagated if this is a shared | |
1455 | object. */ | |
1456 | case (int)R_I370_NONE: | |
1457 | case (int)R_I370_ADDR31: | |
1458 | case (int)R_I370_ADDR16: | |
1459 | if (info->shared) | |
1460 | { | |
1461 | Elf_Internal_Rela outrel; | |
1462 | boolean skip; | |
1463 | ||
1464 | #ifdef DEBUG | |
1465 | fprintf (stderr, | |
1466 | "i370_elf_relocate_section needs to create relocation for %s\n", | |
1467 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
1468 | #endif | |
1469 | ||
1470 | /* When generating a shared object, these relocations | |
1471 | are copied into the output file to be resolved at run | |
1472 | time. */ | |
1473 | ||
1474 | if (sreloc == NULL) | |
1475 | { | |
1476 | const char *name; | |
1477 | ||
1478 | name = (bfd_elf_string_from_elf_section | |
1479 | (input_bfd, | |
1480 | elf_elfheader (input_bfd)->e_shstrndx, | |
1481 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1482 | if (name == NULL) | |
1483 | return false; | |
1484 | ||
1485 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1486 | && strcmp (bfd_get_section_name (input_bfd, | |
1487 | input_section), | |
1488 | name + 5) == 0); | |
1489 | ||
1490 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1491 | BFD_ASSERT (sreloc != NULL); | |
1492 | } | |
1493 | ||
1494 | skip = false; | |
1495 | ||
1496 | if (elf_section_data (input_section)->stab_info == NULL) | |
1497 | outrel.r_offset = rel->r_offset; | |
1498 | else | |
1499 | { | |
1500 | bfd_vma off; | |
1501 | ||
1502 | off = (_bfd_stab_section_offset | |
1503 | (output_bfd, &elf_hash_table (info)->stab_info, | |
1504 | input_section, | |
1505 | &elf_section_data (input_section)->stab_info, | |
1506 | rel->r_offset)); | |
1507 | if (off == (bfd_vma) -1) | |
1508 | skip = true; | |
1509 | outrel.r_offset = off; | |
1510 | } | |
1511 | ||
1512 | outrel.r_offset += (input_section->output_section->vma | |
1513 | + input_section->output_offset); | |
1514 | ||
1515 | if (skip) | |
1516 | memset (&outrel, 0, sizeof outrel); | |
1517 | /* h->dynindx may be -1 if this symbol was marked to | |
1518 | become local. */ | |
1519 | else if (h != NULL | |
1520 | && ((! info->symbolic && h->dynindx != -1) | |
1521 | || (h->elf_link_hash_flags | |
1522 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1523 | { | |
1524 | BFD_ASSERT (h->dynindx != -1); | |
1525 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1526 | outrel.r_addend = rel->r_addend; | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | if (r_type == R_I370_ADDR31) | |
1531 | { | |
1532 | outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE); | |
1533 | outrel.r_addend = relocation + rel->r_addend; | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | long indx; | |
1538 | ||
1539 | if (h == NULL) | |
1540 | sec = local_sections[r_symndx]; | |
1541 | else | |
1542 | { | |
1543 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1544 | || (h->root.type | |
1545 | == bfd_link_hash_defweak)); | |
1546 | sec = h->root.u.def.section; | |
1547 | } | |
1548 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1549 | indx = 0; | |
1550 | else if (sec == NULL || sec->owner == NULL) | |
1551 | { | |
1552 | bfd_set_error (bfd_error_bad_value); | |
1553 | return false; | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | asection *osec; | |
1558 | ||
1559 | osec = sec->output_section; | |
1560 | indx = elf_section_data (osec)->dynindx; | |
1561 | BFD_ASSERT(indx > 0); | |
1562 | #ifdef DEBUG | |
1563 | if (indx <= 0) | |
1564 | { | |
1565 | printf("indx=%d section=%s flags=%08x name=%s\n", | |
1566 | indx, osec->name, osec->flags, | |
1567 | h->root.root.string); | |
1568 | } | |
1569 | #endif | |
1570 | } | |
1571 | ||
1572 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1573 | outrel.r_addend = relocation + rel->r_addend; | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
1578 | (((Elf32_External_Rela *) | |
1579 | sreloc->contents) | |
1580 | + sreloc->reloc_count)); | |
1581 | ++sreloc->reloc_count; | |
1582 | ||
1583 | /* This reloc will be computed at runtime, so there's no | |
1584 | need to do anything now, unless this is a RELATIVE | |
1585 | reloc in an unallocated section. */ | |
1586 | if (skip | |
1587 | || (input_section->flags & SEC_ALLOC) != 0 | |
1588 | || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE) | |
1589 | continue; | |
1590 | } | |
1591 | break; | |
1592 | ||
1593 | case (int)R_I370_COPY: | |
1594 | case (int)R_I370_RELATIVE: | |
1595 | (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.", | |
1596 | bfd_get_filename (input_bfd), | |
1597 | i370_elf_howto_table[ (int)r_type ]->name, | |
1598 | sym_name); | |
1599 | ||
1600 | bfd_set_error (bfd_error_invalid_operation); | |
1601 | ret = false; | |
1602 | continue; | |
1603 | } | |
1604 | ||
1605 | ||
1606 | #ifdef DEBUG | |
1607 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", | |
1608 | howto->name, | |
1609 | (int)r_type, | |
1610 | sym_name, | |
1611 | r_symndx, | |
1612 | (long)offset, | |
1613 | (long)addend); | |
1614 | #endif | |
1615 | ||
1616 | r = _bfd_final_link_relocate (howto, | |
1617 | input_bfd, | |
1618 | input_section, | |
1619 | contents, | |
1620 | offset, | |
1621 | relocation, | |
1622 | addend); | |
1623 | ||
1624 | if (r != bfd_reloc_ok) | |
1625 | { | |
1626 | ret = false; | |
1627 | switch (r) | |
1628 | { | |
1629 | default: | |
1630 | break; | |
1631 | ||
1632 | case bfd_reloc_overflow: | |
1633 | { | |
1634 | const char *name; | |
1635 | ||
1636 | if (h != NULL) | |
1637 | name = h->root.root.string; | |
1638 | else | |
1639 | { | |
1640 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1641 | symtab_hdr->sh_link, | |
1642 | sym->st_name); | |
1643 | if (name == NULL) | |
1644 | break; | |
1645 | ||
1646 | if (*name == '\0') | |
1647 | name = bfd_section_name (input_bfd, sec); | |
1648 | } | |
1649 | ||
1650 | (*info->callbacks->reloc_overflow)(info, | |
1651 | name, | |
1652 | howto->name, | |
1653 | (bfd_vma) 0, | |
1654 | input_bfd, | |
1655 | input_section, | |
1656 | offset); | |
1657 | } | |
1658 | break; | |
1659 | ||
1660 | } | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | ||
1665 | #ifdef DEBUG | |
1666 | fprintf (stderr, "\n"); | |
1667 | #endif | |
1668 | ||
1669 | return ret; | |
1670 | } | |
1671 | ||
1672 | static void | |
1673 | i370_elf_post_process_headers (abfd, link_info) | |
1674 | bfd * abfd; | |
1675 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
1676 | { | |
1677 | Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ | |
1678 | ||
1679 | i_ehdrp = elf_elfheader (abfd); | |
1680 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
1681 | } | |
1682 | \f | |
1683 | #define TARGET_BIG_SYM bfd_elf32_i370_vec | |
1684 | #define TARGET_BIG_NAME "elf32-i370" | |
1685 | #define ELF_ARCH bfd_arch_i370 | |
1686 | #define ELF_MACHINE_CODE EM_S370 | |
1687 | #ifdef EM_I370_OLD | |
1688 | #define ELF_MACHINE_ALT1 EM_I370_OLD | |
1689 | #endif | |
1690 | #define ELF_MAXPAGESIZE 0x1000 | |
1691 | #define elf_info_to_howto i370_elf_info_to_howto | |
1692 | ||
1693 | ||
1694 | ||
1695 | #define elf_backend_plt_not_loaded 1 | |
1696 | #define elf_backend_got_symbol_offset 4 | |
1697 | ||
1698 | #define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup | |
1699 | #define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags | |
1700 | #define bfd_elf32_bfd_copy_private_bfd_data i370_elf_copy_private_bfd_data | |
1701 | #define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data | |
1702 | #define elf_backend_relocate_section i370_elf_relocate_section | |
1703 | ||
1704 | /* dynamic loader support is mostly broken; just enough here to be able to | |
1705 | * link glibc's ld.so without errors. | |
1706 | */ | |
1707 | #define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections | |
1708 | #define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections | |
1709 | #define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections | |
1710 | #define elf_backend_fake_sections i370_elf_fake_sections | |
1711 | #define elf_backend_section_from_shdr i370_elf_section_from_shdr | |
1712 | #define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol | |
1713 | #define elf_backend_check_relocs i370_elf_check_relocs | |
1714 | ||
1715 | /* | |
1716 | #define elf_backend_add_symbol_hook i370_elf_add_symbol_hook | |
1717 | #define elf_backend_finish_dynamic_symbol i370_elf_finish_dynamic_symbol | |
1718 | #define elf_backend_additional_program_headers i370_elf_additional_program_headers | |
1719 | #define elf_backend_modify_segment_map i370_elf_modify_segment_map | |
1720 | */ | |
1721 | ||
1722 | #define elf_backend_post_process_headers i370_elf_post_process_headers | |
1723 | ||
1724 | int i370_noop() | |
1725 | { | |
1726 | return 1; | |
1727 | } | |
1728 | ||
1729 | /* we need to define these at least as no-ops to link glibc ld.so */ | |
1730 | ||
1731 | #define elf_backend_add_symbol_hook \ | |
1732 | (boolean (*) PARAMS ((bfd *, struct bfd_link_info *, \ | |
86033394 NC |
1733 | const Elf_Internal_Sym *, const char **, flagword *, \ |
1734 | asection **, bfd_vma *))) i370_noop | |
5b93d8bb AM |
1735 | #define elf_backend_finish_dynamic_symbol \ |
1736 | (boolean (*) PARAMS ((bfd *, struct bfd_link_info *, \ | |
1737 | struct elf_link_hash_entry *, \ | |
1738 | Elf_Internal_Sym *))) i370_noop | |
1739 | #define elf_backend_additional_program_headers \ | |
1740 | (int (*) PARAMS ((bfd *))) i370_noop | |
1741 | #define elf_backend_modify_segment_map \ | |
1742 | (boolean (*) PARAMS ((bfd *))) i370_noop | |
1743 | ||
1744 | #include "elf32-target.h" |