Commit | Line | Data |
---|---|---|
5b93d8bb | 1 | /* i370-specific support for 32-bit ELF |
5a580b3a | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004 |
7898deda | 3 | Free Software Foundation, Inc. |
5b93d8bb AM |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | Hacked by Linas Vepstas for i370 linas@linas.org | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
3e110533 | 21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5b93d8bb | 22 | |
5b93d8bb AM |
23 | /* This file is based on a preliminary PowerPC ELF ABI. |
24 | But its been hacked on for the IBM 360/370 architectures. | |
25 | Basically, the 31bit relocation works, and just about everything | |
26 | else is a wild card. In particular, don't expect shared libs or | |
27 | dynamic loading to work ... its never been tested ... | |
28 | */ | |
29 | ||
5b93d8bb AM |
30 | #include "bfd.h" |
31 | #include "sysdep.h" | |
32 | #include "bfdlink.h" | |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
35 | #include "elf/i370.h" | |
36 | ||
5b93d8bb AM |
37 | static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ]; |
38 | ||
39 | static reloc_howto_type i370_elf_howto_raw[] = | |
40 | { | |
41 | /* This reloc does nothing. */ | |
42 | HOWTO (R_I370_NONE, /* type */ | |
43 | 0, /* rightshift */ | |
44 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
45 | 32, /* bitsize */ | |
b34976b6 | 46 | FALSE, /* pc_relative */ |
5b93d8bb AM |
47 | 0, /* bitpos */ |
48 | complain_overflow_bitfield, /* complain_on_overflow */ | |
49 | bfd_elf_generic_reloc, /* special_function */ | |
50 | "R_I370_NONE", /* name */ | |
b34976b6 | 51 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
52 | 0, /* src_mask */ |
53 | 0, /* dst_mask */ | |
b34976b6 | 54 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
55 | |
56 | /* A standard 31 bit relocation. */ | |
57 | HOWTO (R_I370_ADDR31, /* type */ | |
58 | 0, /* rightshift */ | |
59 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
60 | 31, /* bitsize */ | |
b34976b6 | 61 | FALSE, /* pc_relative */ |
5b93d8bb AM |
62 | 0, /* bitpos */ |
63 | complain_overflow_bitfield, /* complain_on_overflow */ | |
64 | bfd_elf_generic_reloc, /* special_function */ | |
65 | "R_I370_ADDR31", /* name */ | |
b34976b6 | 66 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
67 | 0, /* src_mask */ |
68 | 0x7fffffff, /* dst_mask */ | |
b34976b6 | 69 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
70 | |
71 | /* A standard 32 bit relocation. */ | |
72 | HOWTO (R_I370_ADDR32, /* type */ | |
73 | 0, /* rightshift */ | |
74 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
75 | 32, /* bitsize */ | |
b34976b6 | 76 | FALSE, /* pc_relative */ |
5b93d8bb AM |
77 | 0, /* bitpos */ |
78 | complain_overflow_bitfield, /* complain_on_overflow */ | |
79 | bfd_elf_generic_reloc, /* special_function */ | |
80 | "R_I370_ADDR32", /* name */ | |
b34976b6 | 81 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
82 | 0, /* src_mask */ |
83 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 84 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
85 | |
86 | /* A standard 16 bit relocation. */ | |
87 | HOWTO (R_I370_ADDR16, /* type */ | |
88 | 0, /* rightshift */ | |
89 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
90 | 16, /* bitsize */ | |
b34976b6 | 91 | FALSE, /* pc_relative */ |
5b93d8bb AM |
92 | 0, /* bitpos */ |
93 | complain_overflow_bitfield, /* complain_on_overflow */ | |
94 | bfd_elf_generic_reloc, /* special_function */ | |
95 | "R_I370_ADDR16", /* name */ | |
b34976b6 | 96 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
97 | 0, /* src_mask */ |
98 | 0xffff, /* dst_mask */ | |
b34976b6 | 99 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
100 | |
101 | /* 31-bit PC relative */ | |
102 | HOWTO (R_I370_REL31, /* type */ | |
103 | 0, /* rightshift */ | |
104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
105 | 31, /* bitsize */ | |
b34976b6 | 106 | TRUE, /* pc_relative */ |
5b93d8bb AM |
107 | 0, /* bitpos */ |
108 | complain_overflow_bitfield, /* complain_on_overflow */ | |
109 | bfd_elf_generic_reloc, /* special_function */ | |
110 | "R_I370_REL31", /* name */ | |
b34976b6 | 111 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
112 | 0, /* src_mask */ |
113 | 0x7fffffff, /* dst_mask */ | |
b34976b6 | 114 | TRUE), /* pcrel_offset */ |
5b93d8bb AM |
115 | |
116 | /* 32-bit PC relative */ | |
117 | HOWTO (R_I370_REL32, /* type */ | |
118 | 0, /* rightshift */ | |
119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
120 | 32, /* bitsize */ | |
b34976b6 | 121 | TRUE, /* pc_relative */ |
5b93d8bb AM |
122 | 0, /* bitpos */ |
123 | complain_overflow_bitfield, /* complain_on_overflow */ | |
124 | bfd_elf_generic_reloc, /* special_function */ | |
125 | "R_I370_REL32", /* name */ | |
b34976b6 | 126 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
127 | 0, /* src_mask */ |
128 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 129 | TRUE), /* pcrel_offset */ |
5b93d8bb AM |
130 | |
131 | /* A standard 12 bit relocation. */ | |
132 | HOWTO (R_I370_ADDR12, /* type */ | |
133 | 0, /* rightshift */ | |
134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
135 | 12, /* bitsize */ | |
b34976b6 | 136 | FALSE, /* pc_relative */ |
5b93d8bb AM |
137 | 0, /* bitpos */ |
138 | complain_overflow_bitfield, /* complain_on_overflow */ | |
139 | bfd_elf_generic_reloc, /* special_function */ | |
140 | "R_I370_ADDR12", /* name */ | |
b34976b6 | 141 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
142 | 0, /* src_mask */ |
143 | 0xfff, /* dst_mask */ | |
b34976b6 | 144 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
145 | |
146 | /* 12-bit PC relative */ | |
147 | HOWTO (R_I370_REL12, /* type */ | |
148 | 0, /* rightshift */ | |
149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
150 | 12, /* bitsize */ | |
b34976b6 | 151 | TRUE, /* pc_relative */ |
5b93d8bb AM |
152 | 0, /* bitpos */ |
153 | complain_overflow_bitfield, /* complain_on_overflow */ | |
154 | bfd_elf_generic_reloc, /* special_function */ | |
155 | "R_I370_REL12", /* name */ | |
b34976b6 | 156 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
157 | 0, /* src_mask */ |
158 | 0xfff, /* dst_mask */ | |
b34976b6 | 159 | TRUE), /* pcrel_offset */ |
5b93d8bb AM |
160 | |
161 | /* A standard 8 bit relocation. */ | |
162 | HOWTO (R_I370_ADDR8, /* type */ | |
163 | 0, /* rightshift */ | |
164 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
165 | 8, /* bitsize */ | |
b34976b6 | 166 | FALSE, /* pc_relative */ |
5b93d8bb AM |
167 | 0, /* bitpos */ |
168 | complain_overflow_bitfield, /* complain_on_overflow */ | |
169 | bfd_elf_generic_reloc, /* special_function */ | |
170 | "R_I370_ADDR8", /* name */ | |
b34976b6 | 171 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
172 | 0, /* src_mask */ |
173 | 0xff, /* dst_mask */ | |
b34976b6 | 174 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
175 | |
176 | /* 8-bit PC relative */ | |
177 | HOWTO (R_I370_REL8, /* type */ | |
178 | 0, /* rightshift */ | |
179 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
180 | 8, /* bitsize */ | |
b34976b6 | 181 | TRUE, /* pc_relative */ |
5b93d8bb AM |
182 | 0, /* bitpos */ |
183 | complain_overflow_bitfield, /* complain_on_overflow */ | |
184 | bfd_elf_generic_reloc, /* special_function */ | |
185 | "R_I370_REL8", /* name */ | |
b34976b6 | 186 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
187 | 0, /* src_mask */ |
188 | 0xff, /* dst_mask */ | |
b34976b6 | 189 | TRUE), /* pcrel_offset */ |
5b93d8bb AM |
190 | |
191 | /* This is used only by the dynamic linker. The symbol should exist | |
192 | both in the object being run and in some shared library. The | |
193 | dynamic linker copies the data addressed by the symbol from the | |
194 | shared library into the object, because the object being | |
195 | run has to have the data at some particular address. */ | |
196 | HOWTO (R_I370_COPY, /* type */ | |
197 | 0, /* rightshift */ | |
198 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
199 | 32, /* bitsize */ | |
b34976b6 | 200 | FALSE, /* pc_relative */ |
5b93d8bb AM |
201 | 0, /* bitpos */ |
202 | complain_overflow_bitfield, /* complain_on_overflow */ | |
203 | bfd_elf_generic_reloc, /* special_function */ | |
204 | "R_I370_COPY", /* name */ | |
b34976b6 | 205 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
206 | 0, /* src_mask */ |
207 | 0, /* dst_mask */ | |
b34976b6 | 208 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
209 | |
210 | /* Used only by the dynamic linker. When the object is run, this | |
211 | longword is set to the load address of the object, plus the | |
212 | addend. */ | |
213 | HOWTO (R_I370_RELATIVE, /* type */ | |
214 | 0, /* rightshift */ | |
215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
216 | 32, /* bitsize */ | |
b34976b6 | 217 | FALSE, /* pc_relative */ |
5b93d8bb AM |
218 | 0, /* bitpos */ |
219 | complain_overflow_bitfield, /* complain_on_overflow */ | |
220 | bfd_elf_generic_reloc, /* special_function */ | |
221 | "R_I370_RELATIVE", /* name */ | |
b34976b6 | 222 | FALSE, /* partial_inplace */ |
5b93d8bb AM |
223 | 0, /* src_mask */ |
224 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 225 | FALSE), /* pcrel_offset */ |
5b93d8bb AM |
226 | |
227 | }; | |
5b93d8bb | 228 | \f |
b34976b6 AM |
229 | static void i370_elf_howto_init |
230 | PARAMS ((void)); | |
99c79b2e AJ |
231 | static reloc_howto_type *i370_elf_reloc_type_lookup |
232 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
b34976b6 AM |
233 | static void i370_elf_info_to_howto |
234 | PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)); | |
235 | static bfd_boolean i370_elf_set_private_flags | |
236 | PARAMS ((bfd *, flagword)); | |
5b93d8bb AM |
237 | \f |
238 | /* Initialize the i370_elf_howto_table, so that linear accesses can be done. */ | |
239 | ||
240 | static void | |
241 | i370_elf_howto_init () | |
242 | { | |
243 | unsigned int i, type; | |
244 | ||
245 | for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++) | |
246 | { | |
247 | type = i370_elf_howto_raw[i].type; | |
6609fa74 | 248 | BFD_ASSERT (type < sizeof (i370_elf_howto_table) / sizeof (i370_elf_howto_table[0])); |
5b93d8bb AM |
249 | i370_elf_howto_table[type] = &i370_elf_howto_raw[i]; |
250 | } | |
251 | } | |
5b93d8bb AM |
252 | \f |
253 | static reloc_howto_type * | |
254 | i370_elf_reloc_type_lookup (abfd, code) | |
86033394 | 255 | bfd *abfd ATTRIBUTE_UNUSED; |
5b93d8bb AM |
256 | bfd_reloc_code_real_type code; |
257 | { | |
258 | enum i370_reloc_type i370_reloc = R_I370_NONE; | |
259 | ||
260 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ | |
261 | i370_elf_howto_init (); | |
262 | ||
263 | switch ((int)code) | |
264 | { | |
265 | default: | |
266 | return (reloc_howto_type *)NULL; | |
267 | ||
268 | case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; | |
269 | case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; | |
270 | case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break; | |
271 | case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break; | |
272 | case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break; | |
273 | case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break; | |
274 | } | |
275 | ||
276 | return i370_elf_howto_table[ (int)i370_reloc ]; | |
277 | }; | |
278 | ||
b34976b6 AM |
279 | static bfd_boolean i370_elf_merge_private_bfd_data |
280 | PARAMS ((bfd *, bfd *)); | |
281 | static bfd_boolean i370_elf_relocate_section | |
282 | PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *, | |
283 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, | |
284 | asection **)); | |
99c79b2e AJ |
285 | static void i370_elf_post_process_headers |
286 | PARAMS ((bfd *, struct bfd_link_info *)); | |
b34976b6 AM |
287 | static bfd_boolean i370_elf_create_dynamic_sections |
288 | PARAMS ((bfd *, struct bfd_link_info *)); | |
b34976b6 AM |
289 | static bfd_boolean i370_elf_fake_sections |
290 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); | |
b34976b6 AM |
291 | static bfd_boolean i370_elf_check_relocs |
292 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
293 | const Elf_Internal_Rela *)); | |
294 | static bfd_boolean i370_elf_adjust_dynamic_symbol | |
295 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
296 | static bfd_boolean i370_elf_adjust_dynindx | |
297 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
298 | static bfd_boolean i370_elf_size_dynamic_sections | |
299 | PARAMS ((bfd *, struct bfd_link_info *)); | |
300 | static bfd_boolean i370_elf_finish_dynamic_sections | |
301 | PARAMS ((bfd *, struct bfd_link_info *)); | |
5b93d8bb AM |
302 | |
303 | /* The name of the dynamic interpreter. This is put in the .interp | |
304 | section. */ | |
305 | ||
306 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so" | |
307 | ||
5b93d8bb AM |
308 | /* Set the howto pointer for an i370 ELF reloc. */ |
309 | ||
310 | static void | |
311 | i370_elf_info_to_howto (abfd, cache_ptr, dst) | |
86033394 | 312 | bfd *abfd ATTRIBUTE_UNUSED; |
5b93d8bb | 313 | arelent *cache_ptr; |
947216bf | 314 | Elf_Internal_Rela *dst; |
5b93d8bb AM |
315 | { |
316 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table */ | |
317 | i370_elf_howto_init (); | |
318 | ||
319 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_I370_max); | |
320 | cache_ptr->howto = i370_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
321 | } | |
322 | ||
323 | /* hack alert -- the following several routines look generic to me ... | |
324 | * why are we bothering with them ??? | |
325 | */ | |
6609fa74 | 326 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
b34976b6 | 327 | static bfd_boolean |
5b93d8bb AM |
328 | i370_elf_set_private_flags (abfd, flags) |
329 | bfd *abfd; | |
330 | flagword flags; | |
331 | { | |
332 | BFD_ASSERT (!elf_flags_init (abfd) | |
333 | || elf_elfheader (abfd)->e_flags == flags); | |
334 | ||
335 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
336 | elf_flags_init (abfd) = TRUE; |
337 | return TRUE; | |
5b93d8bb AM |
338 | } |
339 | ||
5b93d8bb AM |
340 | /* Merge backend specific data from an object file to the output |
341 | object file when linking */ | |
b34976b6 | 342 | static bfd_boolean |
5b93d8bb AM |
343 | i370_elf_merge_private_bfd_data (ibfd, obfd) |
344 | bfd *ibfd; | |
345 | bfd *obfd; | |
346 | { | |
347 | flagword old_flags; | |
348 | flagword new_flags; | |
349 | ||
350 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
351 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 352 | return TRUE; |
5b93d8bb AM |
353 | |
354 | new_flags = elf_elfheader (ibfd)->e_flags; | |
355 | old_flags = elf_elfheader (obfd)->e_flags; | |
356 | if (!elf_flags_init (obfd)) /* First call, no flags set */ | |
357 | { | |
b34976b6 | 358 | elf_flags_init (obfd) = TRUE; |
5b93d8bb AM |
359 | elf_elfheader (obfd)->e_flags = new_flags; |
360 | } | |
361 | ||
362 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
363 | ; | |
364 | ||
365 | else /* Incompatible flags */ | |
366 | { | |
367 | (*_bfd_error_handler) | |
d003868e AM |
368 | ("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", |
369 | ibfd, (long) new_flags, (long) old_flags); | |
5b93d8bb AM |
370 | |
371 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 372 | return FALSE; |
5b93d8bb AM |
373 | } |
374 | ||
b34976b6 | 375 | return TRUE; |
5b93d8bb | 376 | } |
5b93d8bb AM |
377 | \f |
378 | /* Handle an i370 specific section when reading an object file. This | |
379 | is called when elfcode.h finds a section with an unknown type. */ | |
380 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
381 | * certainly does the wrong thing. Its here simply because it does | |
382 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
383 | */ | |
384 | ||
b34976b6 | 385 | static bfd_boolean |
6dc132d9 L |
386 | i370_elf_section_from_shdr (bfd *abfd, |
387 | Elf_Internal_Shdr *hdr, | |
388 | const char *name, | |
389 | int shindex) | |
5b93d8bb AM |
390 | { |
391 | asection *newsect; | |
392 | flagword flags; | |
393 | ||
6dc132d9 | 394 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 395 | return FALSE; |
5b93d8bb AM |
396 | |
397 | newsect = hdr->bfd_section; | |
398 | flags = bfd_get_section_flags (abfd, newsect); | |
399 | if (hdr->sh_flags & SHF_EXCLUDE) | |
400 | flags |= SEC_EXCLUDE; | |
401 | ||
402 | if (hdr->sh_type == SHT_ORDERED) | |
403 | flags |= SEC_SORT_ENTRIES; | |
404 | ||
405 | bfd_set_section_flags (abfd, newsect, flags); | |
b34976b6 | 406 | return TRUE; |
5b93d8bb | 407 | } |
5b93d8bb AM |
408 | \f |
409 | /* Set up any other section flags and such that may be necessary. */ | |
410 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
411 | * certainly does the wrong thing. Its here simply because it does | |
412 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
413 | */ | |
414 | ||
b34976b6 | 415 | static bfd_boolean |
5b93d8bb | 416 | i370_elf_fake_sections (abfd, shdr, asect) |
86033394 | 417 | bfd *abfd ATTRIBUTE_UNUSED; |
947216bf | 418 | Elf_Internal_Shdr *shdr; |
5b93d8bb AM |
419 | asection *asect; |
420 | { | |
421 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
422 | shdr->sh_flags |= SHF_EXCLUDE; | |
423 | ||
424 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
425 | shdr->sh_type = SHT_ORDERED; | |
426 | ||
b34976b6 | 427 | return TRUE; |
5b93d8bb | 428 | } |
5b93d8bb | 429 | \f |
5b93d8bb AM |
430 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
431 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
432 | to create .dynbss and .rela.bss). */ | |
433 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
434 | * certainly does the wrong thing. Its here simply because it does | |
435 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
436 | */ | |
437 | ||
b34976b6 | 438 | static bfd_boolean |
5b93d8bb AM |
439 | i370_elf_create_dynamic_sections (abfd, info) |
440 | bfd *abfd; | |
441 | struct bfd_link_info *info; | |
442 | { | |
443 | register asection *s; | |
444 | flagword flags; | |
445 | ||
446 | if (!_bfd_elf_create_dynamic_sections(abfd, info)) | |
b34976b6 | 447 | return FALSE; |
5b93d8bb AM |
448 | |
449 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
450 | | SEC_LINKER_CREATED); | |
451 | ||
3496cb2a L |
452 | s = bfd_make_section_with_flags (abfd, ".dynsbss", |
453 | SEC_ALLOC | SEC_LINKER_CREATED); | |
454 | if (s == NULL) | |
b34976b6 | 455 | return FALSE; |
5b93d8bb AM |
456 | |
457 | if (! info->shared) | |
458 | { | |
3496cb2a L |
459 | s = bfd_make_section_with_flags (abfd, ".rela.sbss", |
460 | flags | SEC_READONLY); | |
5b93d8bb | 461 | if (s == NULL |
5b93d8bb | 462 | || ! bfd_set_section_alignment (abfd, s, 2)) |
b34976b6 | 463 | return FALSE; |
5b93d8bb AM |
464 | } |
465 | ||
6609fa74 | 466 | /* xxx beats me, seem to need a rela.text ... */ |
3496cb2a L |
467 | s = bfd_make_section_with_flags (abfd, ".rela.text", |
468 | flags | SEC_READONLY); | |
5b93d8bb | 469 | if (s == NULL |
5b93d8bb | 470 | || ! bfd_set_section_alignment (abfd, s, 2)) |
b34976b6 AM |
471 | return FALSE; |
472 | return TRUE; | |
5b93d8bb AM |
473 | } |
474 | ||
475 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
476 | regular object. The current definition is in some section of the | |
477 | dynamic object, but we're not including those sections. We have to | |
478 | change the definition to something the rest of the link can | |
479 | understand. */ | |
480 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
481 | * certainly does the wrong thing. Its here simply because it does | |
482 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
483 | */ | |
484 | ||
b34976b6 | 485 | static bfd_boolean |
5b93d8bb AM |
486 | i370_elf_adjust_dynamic_symbol (info, h) |
487 | struct bfd_link_info *info; | |
488 | struct elf_link_hash_entry *h; | |
489 | { | |
490 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
491 | asection *s; | |
492 | unsigned int power_of_two; | |
5b93d8bb AM |
493 | |
494 | #ifdef DEBUG | |
495 | fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n", | |
496 | h->root.root.string); | |
497 | #endif | |
498 | ||
499 | /* Make sure we know what is going on here. */ | |
500 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 501 | && (h->needs_plt |
f6e332e6 | 502 | || h->u.weakdef != NULL |
f5385ebf AM |
503 | || (h->def_dynamic |
504 | && h->ref_regular | |
505 | && !h->def_regular))); | |
5b93d8bb | 506 | |
5b93d8bb AM |
507 | s = bfd_get_section_by_name (dynobj, ".rela.text"); |
508 | BFD_ASSERT (s != NULL); | |
eea6121a | 509 | s->size += sizeof (Elf32_External_Rela); |
5b93d8bb AM |
510 | |
511 | /* If this is a weak symbol, and there is a real definition, the | |
512 | processor independent code will have arranged for us to see the | |
513 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 514 | if (h->u.weakdef != NULL) |
5b93d8bb | 515 | { |
f6e332e6 AM |
516 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
517 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
518 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
519 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 520 | return TRUE; |
5b93d8bb AM |
521 | } |
522 | ||
523 | /* This is a reference to a symbol defined by a dynamic object which | |
524 | is not a function. */ | |
525 | ||
526 | /* If we are creating a shared library, we must presume that the | |
527 | only references to the symbol are via the global offset table. | |
528 | For such cases we need not do anything here; the relocations will | |
529 | be handled correctly by relocate_section. */ | |
530 | if (info->shared) | |
b34976b6 | 531 | return TRUE; |
5b93d8bb AM |
532 | |
533 | /* We must allocate the symbol in our .dynbss section, which will | |
534 | become part of the .bss section of the executable. There will be | |
535 | an entry for this symbol in the .dynsym section. The dynamic | |
536 | object will contain position independent code, so all references | |
537 | from the dynamic object to this symbol will go through the global | |
538 | offset table. The dynamic linker will use the .dynsym entry to | |
539 | determine the address it must put in the global offset table, so | |
540 | both the dynamic object and the regular object will refer to the | |
541 | same memory location for the variable. | |
542 | ||
543 | Of course, if the symbol is sufficiently small, we must instead | |
544 | allocate it in .sbss. FIXME: It would be better to do this if and | |
545 | only if there were actually SDAREL relocs for that symbol. */ | |
546 | ||
547 | if (h->size <= elf_gp_size (dynobj)) | |
548 | s = bfd_get_section_by_name (dynobj, ".dynsbss"); | |
549 | else | |
550 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
551 | BFD_ASSERT (s != NULL); | |
552 | ||
553 | /* We must generate a R_I370_COPY reloc to tell the dynamic linker to | |
554 | copy the initial value out of the dynamic object and into the | |
555 | runtime process image. We need to remember the offset into the | |
556 | .rela.bss section we are going to use. */ | |
557 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
558 | { | |
559 | asection *srel; | |
560 | ||
561 | if (h->size <= elf_gp_size (dynobj)) | |
562 | srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); | |
563 | else | |
564 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
565 | BFD_ASSERT (srel != NULL); | |
eea6121a | 566 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 567 | h->needs_copy = 1; |
5b93d8bb AM |
568 | } |
569 | ||
570 | /* We need to figure out the alignment required for this symbol. I | |
571 | have no idea how ELF linkers handle this. */ | |
572 | power_of_two = bfd_log2 (h->size); | |
573 | if (power_of_two > 4) | |
574 | power_of_two = 4; | |
575 | ||
576 | /* Apply the required alignment. */ | |
eea6121a | 577 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
5b93d8bb AM |
578 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
579 | { | |
580 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 581 | return FALSE; |
5b93d8bb AM |
582 | } |
583 | ||
584 | /* Define the symbol as being at this point in the section. */ | |
585 | h->root.u.def.section = s; | |
eea6121a | 586 | h->root.u.def.value = s->size; |
5b93d8bb AM |
587 | |
588 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 589 | s->size += h->size; |
5b93d8bb | 590 | |
b34976b6 | 591 | return TRUE; |
5b93d8bb | 592 | } |
5b93d8bb AM |
593 | \f |
594 | /* Increment the index of a dynamic symbol by a given amount. Called | |
595 | via elf_link_hash_traverse. */ | |
596 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
597 | * certainly does the wrong thing. Its here simply because it does | |
598 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
599 | */ | |
600 | ||
b34976b6 | 601 | static bfd_boolean |
5b93d8bb AM |
602 | i370_elf_adjust_dynindx (h, cparg) |
603 | struct elf_link_hash_entry *h; | |
604 | PTR cparg; | |
605 | { | |
606 | int *cp = (int *) cparg; | |
607 | ||
608 | #ifdef DEBUG | |
609 | fprintf (stderr, | |
610 | "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", | |
611 | h->dynindx, *cp); | |
612 | #endif | |
613 | ||
e92d460e AM |
614 | if (h->root.type == bfd_link_hash_warning) |
615 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
616 | ||
5b93d8bb AM |
617 | if (h->dynindx != -1) |
618 | h->dynindx += *cp; | |
619 | ||
b34976b6 | 620 | return TRUE; |
5b93d8bb | 621 | } |
5b93d8bb AM |
622 | \f |
623 | /* Set the sizes of the dynamic sections. */ | |
624 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
625 | * certainly does the wrong thing. Its here simply because it does | |
626 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
627 | */ | |
628 | ||
b34976b6 | 629 | static bfd_boolean |
5b93d8bb AM |
630 | i370_elf_size_dynamic_sections (output_bfd, info) |
631 | bfd *output_bfd; | |
632 | struct bfd_link_info *info; | |
633 | { | |
634 | bfd *dynobj; | |
635 | asection *s; | |
b34976b6 AM |
636 | bfd_boolean plt; |
637 | bfd_boolean relocs; | |
638 | bfd_boolean reltext; | |
5b93d8bb AM |
639 | |
640 | #ifdef DEBUG | |
641 | fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); | |
642 | #endif | |
643 | ||
644 | dynobj = elf_hash_table (info)->dynobj; | |
645 | BFD_ASSERT (dynobj != NULL); | |
646 | ||
647 | if (elf_hash_table (info)->dynamic_sections_created) | |
648 | { | |
649 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 650 | if (info->executable) |
5b93d8bb AM |
651 | { |
652 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
653 | BFD_ASSERT (s != NULL); | |
eea6121a | 654 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
5b93d8bb AM |
655 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
656 | } | |
657 | } | |
658 | else | |
659 | { | |
660 | /* We may have created entries in the .rela.got, .rela.sdata, and | |
661 | .rela.sdata2 sections. However, if we are not creating the | |
662 | dynamic sections, we will not actually use these entries. Reset | |
663 | the size of .rela.got, et al, which will cause it to get | |
664 | stripped from the output file below. */ | |
665 | static char *rela_sections[] = { ".rela.got", ".rela.sdata", | |
666 | ".rela.sdata2", ".rela.sbss", | |
667 | (char *)0 }; | |
668 | char **p; | |
669 | ||
670 | for (p = rela_sections; *p != (char *)0; p++) | |
671 | { | |
672 | s = bfd_get_section_by_name (dynobj, *p); | |
673 | if (s != NULL) | |
eea6121a | 674 | s->size = 0; |
5b93d8bb AM |
675 | } |
676 | } | |
677 | ||
678 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
679 | determined the sizes of the various dynamic sections. Allocate | |
680 | memory for them. */ | |
b34976b6 AM |
681 | plt = FALSE; |
682 | relocs = FALSE; | |
683 | reltext = FALSE; | |
5b93d8bb AM |
684 | for (s = dynobj->sections; s != NULL; s = s->next) |
685 | { | |
686 | const char *name; | |
b34976b6 | 687 | bfd_boolean strip; |
5b93d8bb AM |
688 | |
689 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
690 | continue; | |
691 | ||
692 | /* It's OK to base decisions on the section name, because none | |
693 | of the dynobj section names depend upon the input files. */ | |
694 | name = bfd_get_section_name (dynobj, s); | |
b34976b6 | 695 | strip = FALSE; |
5b93d8bb AM |
696 | |
697 | if (strcmp (name, ".plt") == 0) | |
698 | { | |
eea6121a | 699 | if (s->size == 0) |
5b93d8bb AM |
700 | { |
701 | /* Strip this section if we don't need it; see the | |
3b36f7e6 | 702 | comment below. */ |
b34976b6 | 703 | strip = TRUE; |
5b93d8bb AM |
704 | } |
705 | else | |
706 | { | |
707 | /* Remember whether there is a PLT. */ | |
b34976b6 | 708 | plt = TRUE; |
5b93d8bb AM |
709 | } |
710 | } | |
711 | else if (strncmp (name, ".rela", 5) == 0) | |
712 | { | |
eea6121a | 713 | if (s->size == 0) |
5b93d8bb AM |
714 | { |
715 | /* If we don't need this section, strip it from the | |
716 | output file. This is mostly to handle .rela.bss and | |
717 | .rela.plt. We must create both sections in | |
718 | create_dynamic_sections, because they must be created | |
719 | before the linker maps input sections to output | |
720 | sections. The linker does that before | |
721 | adjust_dynamic_symbol is called, and it is that | |
722 | function which decides whether anything needs to go | |
723 | into these sections. */ | |
b34976b6 | 724 | strip = TRUE; |
5b93d8bb AM |
725 | } |
726 | else | |
727 | { | |
728 | asection *target; | |
729 | const char *outname; | |
730 | ||
6609fa74 | 731 | /* Remember whether there are any relocation sections. */ |
b34976b6 | 732 | relocs = TRUE; |
5b93d8bb AM |
733 | |
734 | /* If this relocation section applies to a read only | |
735 | section, then we probably need a DT_TEXTREL entry. */ | |
736 | outname = bfd_get_section_name (output_bfd, | |
737 | s->output_section); | |
738 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
739 | if (target != NULL | |
740 | && (target->flags & SEC_READONLY) != 0 | |
741 | && (target->flags & SEC_ALLOC) != 0) | |
b34976b6 | 742 | reltext = TRUE; |
5b93d8bb AM |
743 | |
744 | /* We use the reloc_count field as a counter if we need | |
745 | to copy relocs into the output file. */ | |
746 | s->reloc_count = 0; | |
747 | } | |
748 | } | |
749 | else if (strcmp (name, ".got") != 0 | |
750 | && strcmp (name, ".sdata") != 0 | |
751 | && strcmp (name, ".sdata2") != 0) | |
752 | { | |
753 | /* It's not one of our sections, so don't allocate space. */ | |
754 | continue; | |
755 | } | |
756 | ||
757 | if (strip) | |
758 | { | |
5daa8fe7 L |
759 | if (!bfd_section_removed_from_list (s->output_section->owner, |
760 | s->output_section)) | |
c601ffdb | 761 | { |
5daa8fe7 L |
762 | bfd_section_list_remove (s->output_section->owner, |
763 | s->output_section); | |
764 | --s->output_section->owner->section_count; | |
c601ffdb | 765 | } |
5b93d8bb AM |
766 | continue; |
767 | } | |
768 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
769 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
770 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 771 | return FALSE; |
5b93d8bb AM |
772 | } |
773 | ||
774 | if (elf_hash_table (info)->dynamic_sections_created) | |
775 | { | |
776 | /* Add some entries to the .dynamic section. We fill in the | |
777 | values later, in i370_elf_finish_dynamic_sections, but we | |
778 | must add the entries now so that we get the correct size for | |
779 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
780 | dynamic linker and used by the debugger. */ | |
dc810e39 | 781 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 782 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
783 | |
784 | if (!info->shared) | |
5b93d8bb | 785 | { |
dc810e39 | 786 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 787 | return FALSE; |
5b93d8bb AM |
788 | } |
789 | ||
790 | if (plt) | |
791 | { | |
dc810e39 AM |
792 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
793 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
794 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
795 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 796 | return FALSE; |
5b93d8bb AM |
797 | } |
798 | ||
799 | if (relocs) | |
800 | { | |
dc810e39 AM |
801 | if (!add_dynamic_entry (DT_RELA, 0) |
802 | || !add_dynamic_entry (DT_RELASZ, 0) | |
803 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 804 | return FALSE; |
5b93d8bb AM |
805 | } |
806 | ||
807 | if (reltext) | |
808 | { | |
dc810e39 | 809 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 810 | return FALSE; |
d6cf2879 | 811 | info->flags |= DF_TEXTREL; |
5b93d8bb AM |
812 | } |
813 | } | |
dc810e39 | 814 | #undef add_dynamic_entry |
5b93d8bb AM |
815 | |
816 | /* If we are generating a shared library, we generate a section | |
817 | symbol for each output section. These are local symbols, which | |
818 | means that they must come first in the dynamic symbol table. | |
819 | That means we must increment the dynamic symbol index of every | |
820 | other dynamic symbol. | |
821 | ||
822 | FIXME: We assume that there will never be relocations to | |
823 | locations in linker-created sections that do not have | |
824 | externally-visible names. Instead, we should work out precisely | |
4cc11e76 | 825 | which sections relocations are targeted at. */ |
5b93d8bb AM |
826 | if (info->shared) |
827 | { | |
828 | int c; | |
829 | ||
830 | for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) | |
831 | { | |
832 | if ((s->flags & SEC_LINKER_CREATED) != 0 | |
833 | || (s->flags & SEC_ALLOC) == 0) | |
834 | { | |
835 | elf_section_data (s)->dynindx = -1; | |
836 | continue; | |
837 | } | |
838 | ||
839 | /* These symbols will have no names, so we don't need to | |
840 | fiddle with dynstr_index. */ | |
841 | ||
842 | elf_section_data (s)->dynindx = c + 1; | |
843 | ||
844 | c++; | |
845 | } | |
846 | ||
847 | elf_link_hash_traverse (elf_hash_table (info), | |
848 | i370_elf_adjust_dynindx, | |
849 | (PTR) &c); | |
850 | elf_hash_table (info)->dynsymcount += c; | |
851 | } | |
852 | ||
b34976b6 | 853 | return TRUE; |
5b93d8bb | 854 | } |
5b93d8bb AM |
855 | \f |
856 | /* Look through the relocs for a section during the first phase, and | |
857 | allocate space in the global offset table or procedure linkage | |
858 | table. */ | |
859 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
860 | * certainly does the wrong thing. Its here simply because it does | |
861 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
862 | */ | |
863 | ||
b34976b6 | 864 | static bfd_boolean |
5b93d8bb AM |
865 | i370_elf_check_relocs (abfd, info, sec, relocs) |
866 | bfd *abfd; | |
867 | struct bfd_link_info *info; | |
868 | asection *sec; | |
869 | const Elf_Internal_Rela *relocs; | |
870 | { | |
871 | bfd *dynobj; | |
872 | Elf_Internal_Shdr *symtab_hdr; | |
873 | struct elf_link_hash_entry **sym_hashes; | |
874 | const Elf_Internal_Rela *rel; | |
875 | const Elf_Internal_Rela *rel_end; | |
876 | bfd_vma *local_got_offsets; | |
5b93d8bb | 877 | asection *sreloc; |
5b93d8bb | 878 | |
1049f94e | 879 | if (info->relocatable) |
b34976b6 | 880 | return TRUE; |
5b93d8bb AM |
881 | |
882 | #ifdef DEBUG | |
d003868e AM |
883 | _bfd_error_handler ("i370_elf_check_relocs called for section %A in %B", |
884 | sec, abfd); | |
5b93d8bb AM |
885 | #endif |
886 | ||
887 | dynobj = elf_hash_table (info)->dynobj; | |
888 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
889 | sym_hashes = elf_sym_hashes (abfd); | |
890 | local_got_offsets = elf_local_got_offsets (abfd); | |
891 | ||
892 | sreloc = NULL; | |
893 | ||
894 | rel_end = relocs + sec->reloc_count; | |
895 | for (rel = relocs; rel < rel_end; rel++) | |
896 | { | |
897 | unsigned long r_symndx; | |
898 | struct elf_link_hash_entry *h; | |
899 | ||
900 | r_symndx = ELF32_R_SYM (rel->r_info); | |
901 | if (r_symndx < symtab_hdr->sh_info) | |
902 | h = NULL; | |
903 | else | |
973a3492 L |
904 | { |
905 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
906 | while (h->root.type == bfd_link_hash_indirect | |
907 | || h->root.type == bfd_link_hash_warning) | |
908 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
909 | } | |
5b93d8bb AM |
910 | |
911 | if (info->shared) | |
912 | { | |
913 | #ifdef DEBUG | |
914 | fprintf (stderr, | |
915 | "i370_elf_check_relocs needs to create relocation for %s\n", | |
916 | (h && h->root.root.string) | |
917 | ? h->root.root.string : "<unknown>"); | |
918 | #endif | |
919 | if (sreloc == NULL) | |
920 | { | |
921 | const char *name; | |
922 | ||
923 | name = (bfd_elf_string_from_elf_section | |
924 | (abfd, | |
925 | elf_elfheader (abfd)->e_shstrndx, | |
926 | elf_section_data (sec)->rel_hdr.sh_name)); | |
927 | if (name == NULL) | |
b34976b6 | 928 | return FALSE; |
5b93d8bb AM |
929 | |
930 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
931 | && strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0); | |
932 | ||
933 | sreloc = bfd_get_section_by_name (dynobj, name); | |
934 | if (sreloc == NULL) | |
935 | { | |
936 | flagword flags; | |
937 | ||
5b93d8bb AM |
938 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
939 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
940 | if ((sec->flags & SEC_ALLOC) != 0) | |
941 | flags |= SEC_ALLOC | SEC_LOAD; | |
3496cb2a L |
942 | sreloc = bfd_make_section_with_flags (dynobj, name, |
943 | flags); | |
5b93d8bb | 944 | if (sreloc == NULL |
5b93d8bb | 945 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 946 | return FALSE; |
5b93d8bb AM |
947 | } |
948 | } | |
949 | ||
eea6121a | 950 | sreloc->size += sizeof (Elf32_External_Rela); |
5b93d8bb AM |
951 | |
952 | /* FIXME: We should here do what the m68k and i386 | |
953 | backends do: if the reloc is pc-relative, record it | |
954 | in case it turns out that the reloc is unnecessary | |
955 | because the symbol is forced local by versioning or | |
956 | we are linking with -Bdynamic. Fortunately this | |
957 | case is not frequent. */ | |
958 | } | |
959 | } | |
960 | ||
b34976b6 | 961 | return TRUE; |
5b93d8bb | 962 | } |
5b93d8bb AM |
963 | \f |
964 | /* Finish up the dynamic sections. */ | |
965 | /* XXX hack alert bogus This routine is mostly all junk and almost | |
966 | * certainly does the wrong thing. Its here simply because it does | |
967 | * just enough to allow glibc-2.1 ld.so to compile & link. | |
968 | */ | |
969 | ||
b34976b6 | 970 | static bfd_boolean |
5b93d8bb AM |
971 | i370_elf_finish_dynamic_sections (output_bfd, info) |
972 | bfd *output_bfd; | |
973 | struct bfd_link_info *info; | |
974 | { | |
975 | asection *sdyn; | |
976 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
977 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); | |
978 | ||
979 | #ifdef DEBUG | |
980 | fprintf (stderr, "i370_elf_finish_dynamic_sections called\n"); | |
981 | #endif | |
982 | ||
983 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
984 | ||
985 | if (elf_hash_table (info)->dynamic_sections_created) | |
986 | { | |
987 | asection *splt; | |
988 | Elf32_External_Dyn *dyncon, *dynconend; | |
989 | ||
990 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
991 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
992 | ||
993 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 994 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
5b93d8bb AM |
995 | for (; dyncon < dynconend; dyncon++) |
996 | { | |
997 | Elf_Internal_Dyn dyn; | |
998 | const char *name; | |
b34976b6 | 999 | bfd_boolean size; |
5b93d8bb AM |
1000 | |
1001 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1002 | ||
1003 | switch (dyn.d_tag) | |
1004 | { | |
b34976b6 AM |
1005 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
1006 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; | |
1007 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; | |
1008 | default: name = NULL; size = FALSE; break; | |
5b93d8bb AM |
1009 | } |
1010 | ||
1011 | if (name != NULL) | |
1012 | { | |
1013 | asection *s; | |
1014 | ||
1015 | s = bfd_get_section_by_name (output_bfd, name); | |
1016 | if (s == NULL) | |
1017 | dyn.d_un.d_val = 0; | |
1018 | else | |
1019 | { | |
1020 | if (! size) | |
1021 | dyn.d_un.d_ptr = s->vma; | |
1022 | else | |
eea6121a | 1023 | dyn.d_un.d_val = s->size; |
5b93d8bb AM |
1024 | } |
1025 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | ||
5b93d8bb AM |
1030 | if (sgot) |
1031 | { | |
1032 | unsigned char *contents = sgot->contents; | |
5b93d8bb AM |
1033 | |
1034 | if (sdyn == NULL) | |
3b36f7e6 | 1035 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents); |
5b93d8bb AM |
1036 | else |
1037 | bfd_put_32 (output_bfd, | |
1038 | sdyn->output_section->vma + sdyn->output_offset, | |
3b36f7e6 | 1039 | contents); |
5b93d8bb AM |
1040 | |
1041 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1042 | } | |
1043 | ||
1044 | if (info->shared) | |
1045 | { | |
1046 | asection *sdynsym; | |
1047 | asection *s; | |
1048 | Elf_Internal_Sym sym; | |
1049 | int maxdindx = 0; | |
1050 | ||
1051 | /* Set up the section symbols for the output sections. */ | |
1052 | ||
1053 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
1054 | BFD_ASSERT (sdynsym != NULL); | |
1055 | ||
1056 | sym.st_size = 0; | |
1057 | sym.st_name = 0; | |
1058 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
1059 | sym.st_other = 0; | |
1060 | ||
1061 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
1062 | { | |
1063 | int indx, dindx; | |
9ad5cbcf | 1064 | Elf32_External_Sym *esym; |
5b93d8bb AM |
1065 | |
1066 | sym.st_value = s->vma; | |
1067 | ||
1068 | indx = elf_section_data (s)->this_idx; | |
1069 | dindx = elf_section_data (s)->dynindx; | |
1070 | if (dindx != -1) | |
1071 | { | |
1072 | BFD_ASSERT(indx > 0); | |
1073 | BFD_ASSERT(dindx > 0); | |
1074 | ||
1075 | if (dindx > maxdindx) | |
1076 | maxdindx = dindx; | |
1077 | ||
1078 | sym.st_shndx = indx; | |
1079 | ||
9ad5cbcf AM |
1080 | esym = (Elf32_External_Sym *) sdynsym->contents + dindx; |
1081 | bfd_elf32_swap_symbol_out (output_bfd, &sym, (PTR) esym, (PTR) 0); | |
5b93d8bb AM |
1082 | } |
1083 | } | |
1084 | ||
1085 | /* Set the sh_info field of the output .dynsym section to the | |
3b36f7e6 | 1086 | index of the first global symbol. */ |
5b93d8bb AM |
1087 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
1088 | maxdindx + 1; | |
1089 | } | |
1090 | ||
b34976b6 | 1091 | return TRUE; |
5b93d8bb | 1092 | } |
5b93d8bb AM |
1093 | \f |
1094 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
1095 | to handle the relocations for a section. | |
1096 | ||
1097 | The relocs are always passed as Rela structures; if the section | |
1098 | actually uses Rel structures, the r_addend field will always be | |
1099 | zero. | |
1100 | ||
1101 | This function is responsible for adjust the section contents as | |
1102 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 1103 | relocatable output file) adjusting the reloc addend as |
5b93d8bb AM |
1104 | necessary. |
1105 | ||
1106 | This function does not have to worry about setting the reloc | |
1107 | address or the reloc symbol index. | |
1108 | ||
1109 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1110 | ||
1111 | LOCAL_SECTIONS is an array giving the section in the input file | |
1112 | corresponding to the st_shndx field of each local symbol. | |
1113 | ||
1114 | The global hash table entry for the global symbols can be found | |
1115 | via elf_sym_hashes (input_bfd). | |
1116 | ||
1049f94e | 1117 | When generating relocatable output, this function must handle |
5b93d8bb AM |
1118 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
1119 | going to be the section symbol corresponding to the output | |
1120 | section, which means that the addend must be adjusted | |
1121 | accordingly. */ | |
1122 | ||
b34976b6 | 1123 | static bfd_boolean |
5b93d8bb | 1124 | i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
b34976b6 | 1125 | contents, relocs, local_syms, local_sections) |
5b93d8bb AM |
1126 | bfd *output_bfd; |
1127 | struct bfd_link_info *info; | |
1128 | bfd *input_bfd; | |
1129 | asection *input_section; | |
1130 | bfd_byte *contents; | |
1131 | Elf_Internal_Rela *relocs; | |
1132 | Elf_Internal_Sym *local_syms; | |
1133 | asection **local_sections; | |
1134 | { | |
b34976b6 | 1135 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5b93d8bb | 1136 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
b34976b6 AM |
1137 | bfd *dynobj = elf_hash_table (info)->dynobj; |
1138 | Elf_Internal_Rela *rel = relocs; | |
1139 | Elf_Internal_Rela *relend = relocs + input_section->reloc_count; | |
1140 | asection *sreloc = NULL; | |
5b93d8bb | 1141 | bfd_vma *local_got_offsets; |
b34976b6 | 1142 | bfd_boolean ret = TRUE; |
5b93d8bb | 1143 | |
1049f94e | 1144 | if (info->relocatable) |
b34976b6 | 1145 | return TRUE; |
b491616a | 1146 | |
5b93d8bb | 1147 | #ifdef DEBUG |
d003868e AM |
1148 | _bfd_error_handler ("i370_elf_relocate_section called for %B section %A, %ld relocations%s", |
1149 | input_bfd, input_section, | |
1150 | (long) input_section->reloc_count, | |
1151 | (info->relocatable) ? " (relocatable)" : ""); | |
5b93d8bb AM |
1152 | #endif |
1153 | ||
1154 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ | |
1155 | i370_elf_howto_init (); | |
1156 | ||
1157 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1158 | ||
1159 | for (; rel < relend; rel++) | |
1160 | { | |
1161 | enum i370_reloc_type r_type = (enum i370_reloc_type)ELF32_R_TYPE (rel->r_info); | |
1162 | bfd_vma offset = rel->r_offset; | |
1163 | bfd_vma addend = rel->r_addend; | |
1164 | bfd_reloc_status_type r = bfd_reloc_other; | |
1165 | Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; | |
1166 | asection *sec = (asection *)0; | |
1167 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; | |
1168 | const char *sym_name = (const char *)0; | |
1169 | reloc_howto_type *howto; | |
1170 | unsigned long r_symndx; | |
1171 | bfd_vma relocation; | |
1172 | ||
1173 | /* Unknown relocation handling */ | |
1174 | if ((unsigned)r_type >= (unsigned)R_I370_max | |
1175 | || !i370_elf_howto_table[(int)r_type]) | |
1176 | { | |
d003868e AM |
1177 | (*_bfd_error_handler) ("%B: unknown relocation type %d", |
1178 | input_bfd, | |
8f615d07 | 1179 | (int) r_type); |
5b93d8bb AM |
1180 | |
1181 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1182 | ret = FALSE; |
5b93d8bb AM |
1183 | continue; |
1184 | } | |
1185 | ||
1186 | howto = i370_elf_howto_table[(int)r_type]; | |
1187 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1188 | ||
5b93d8bb AM |
1189 | if (r_symndx < symtab_hdr->sh_info) |
1190 | { | |
1191 | sym = local_syms + r_symndx; | |
1192 | sec = local_sections[r_symndx]; | |
1193 | sym_name = "<local symbol>"; | |
1194 | ||
8517fae7 | 1195 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
f8df10f4 | 1196 | addend = rel->r_addend; |
5b93d8bb AM |
1197 | } |
1198 | else | |
1199 | { | |
1200 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1201 | while (h->root.type == bfd_link_hash_indirect | |
1202 | || h->root.type == bfd_link_hash_warning) | |
1203 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1204 | sym_name = h->root.root.string; | |
1205 | if (h->root.type == bfd_link_hash_defined | |
1206 | || h->root.type == bfd_link_hash_defweak) | |
1207 | { | |
1208 | sec = h->root.u.def.section; | |
1209 | if (info->shared | |
1210 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1211 | || !h->def_regular) |
5b93d8bb AM |
1212 | && (input_section->flags & SEC_ALLOC) != 0 |
1213 | && (r_type == R_I370_ADDR31 | |
1214 | || r_type == R_I370_COPY | |
1215 | || r_type == R_I370_ADDR16 | |
1216 | || r_type == R_I370_RELATIVE)) | |
1217 | { | |
1218 | /* In these cases, we don't need the relocation | |
3b36f7e6 AM |
1219 | value. We check specially because in some |
1220 | obscure cases sec->output_section will be NULL. */ | |
5b93d8bb AM |
1221 | relocation = 0; |
1222 | } | |
1223 | else | |
1224 | relocation = (h->root.u.def.value | |
1225 | + sec->output_section->vma | |
1226 | + sec->output_offset); | |
1227 | } | |
1228 | else if (h->root.type == bfd_link_hash_undefweak) | |
1229 | relocation = 0; | |
59c2e50f | 1230 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
3a27a730 | 1231 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
5b93d8bb AM |
1232 | relocation = 0; |
1233 | else | |
1234 | { | |
59c2e50f L |
1235 | if ((*info->callbacks->undefined_symbol) |
1236 | (info, h->root.root.string, input_bfd, | |
1237 | input_section, rel->r_offset, | |
1238 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR | |
1239 | || ELF_ST_VISIBILITY (h->other)))) | |
1240 | { | |
1241 | ret = FALSE; | |
1242 | continue; | |
1243 | } | |
1244 | relocation = 0; | |
5b93d8bb AM |
1245 | } |
1246 | } | |
1247 | ||
8f615d07 | 1248 | switch ((int) r_type) |
5b93d8bb AM |
1249 | { |
1250 | default: | |
8f615d07 | 1251 | (*_bfd_error_handler) |
d003868e AM |
1252 | ("%B: unknown relocation type %d for symbol %s", |
1253 | input_bfd, (int) r_type, sym_name); | |
5b93d8bb AM |
1254 | |
1255 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1256 | ret = FALSE; |
5b93d8bb AM |
1257 | continue; |
1258 | ||
7595d193 L |
1259 | case (int)R_I370_NONE: |
1260 | continue; | |
1261 | ||
5b93d8bb | 1262 | /* Relocations that may need to be propagated if this is a shared |
3b36f7e6 | 1263 | object. */ |
5b93d8bb AM |
1264 | case (int)R_I370_REL31: |
1265 | /* If these relocations are not to a named symbol, they can be | |
1266 | handled right here, no need to bother the dynamic linker. */ | |
1267 | if (h == NULL | |
1268 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1269 | break; | |
1270 | /* fall through */ | |
1271 | ||
1272 | /* Relocations that always need to be propagated if this is a shared | |
3b36f7e6 | 1273 | object. */ |
5b93d8bb AM |
1274 | case (int)R_I370_ADDR31: |
1275 | case (int)R_I370_ADDR16: | |
ec338859 AM |
1276 | if (info->shared |
1277 | && r_symndx != 0) | |
5b93d8bb AM |
1278 | { |
1279 | Elf_Internal_Rela outrel; | |
947216bf | 1280 | bfd_byte *loc; |
0bb2d96a | 1281 | int skip; |
5b93d8bb AM |
1282 | |
1283 | #ifdef DEBUG | |
1284 | fprintf (stderr, | |
1285 | "i370_elf_relocate_section needs to create relocation for %s\n", | |
1286 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
1287 | #endif | |
1288 | ||
1289 | /* When generating a shared object, these relocations | |
3b36f7e6 AM |
1290 | are copied into the output file to be resolved at run |
1291 | time. */ | |
5b93d8bb AM |
1292 | |
1293 | if (sreloc == NULL) | |
1294 | { | |
1295 | const char *name; | |
1296 | ||
1297 | name = (bfd_elf_string_from_elf_section | |
1298 | (input_bfd, | |
1299 | elf_elfheader (input_bfd)->e_shstrndx, | |
1300 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1301 | if (name == NULL) | |
b34976b6 | 1302 | return FALSE; |
5b93d8bb AM |
1303 | |
1304 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1305 | && strcmp (bfd_get_section_name (input_bfd, | |
1306 | input_section), | |
1307 | name + 5) == 0); | |
1308 | ||
1309 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1310 | BFD_ASSERT (sreloc != NULL); | |
1311 | } | |
1312 | ||
0bb2d96a | 1313 | skip = 0; |
5b93d8bb | 1314 | |
c629eae0 JJ |
1315 | outrel.r_offset = |
1316 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1317 | rel->r_offset); | |
0bb2d96a JJ |
1318 | if (outrel.r_offset == (bfd_vma) -1 |
1319 | || outrel.r_offset == (bfd_vma) -2) | |
1320 | skip = (int) outrel.r_offset; | |
5b93d8bb AM |
1321 | outrel.r_offset += (input_section->output_section->vma |
1322 | + input_section->output_offset); | |
1323 | ||
1324 | if (skip) | |
1325 | memset (&outrel, 0, sizeof outrel); | |
1326 | /* h->dynindx may be -1 if this symbol was marked to | |
3b36f7e6 | 1327 | become local. */ |
5b93d8bb AM |
1328 | else if (h != NULL |
1329 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1330 | || !h->def_regular)) |
5b93d8bb AM |
1331 | { |
1332 | BFD_ASSERT (h->dynindx != -1); | |
1333 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1334 | outrel.r_addend = rel->r_addend; | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | if (r_type == R_I370_ADDR31) | |
1339 | { | |
1340 | outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE); | |
1341 | outrel.r_addend = relocation + rel->r_addend; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | long indx; | |
1346 | ||
8517fae7 | 1347 | if (bfd_is_abs_section (sec)) |
5b93d8bb AM |
1348 | indx = 0; |
1349 | else if (sec == NULL || sec->owner == NULL) | |
1350 | { | |
1351 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1352 | return FALSE; |
5b93d8bb AM |
1353 | } |
1354 | else | |
1355 | { | |
1356 | asection *osec; | |
1357 | ||
1358 | osec = sec->output_section; | |
1359 | indx = elf_section_data (osec)->dynindx; | |
1360 | BFD_ASSERT(indx > 0); | |
1361 | #ifdef DEBUG | |
1362 | if (indx <= 0) | |
1363 | { | |
6609fa74 KH |
1364 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
1365 | indx, osec->name, osec->flags, | |
1366 | h->root.root.string); | |
5b93d8bb AM |
1367 | } |
1368 | #endif | |
1369 | } | |
1370 | ||
1371 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
1372 | outrel.r_addend = relocation + rel->r_addend; | |
1373 | } | |
1374 | } | |
1375 | ||
947216bf AM |
1376 | loc = sreloc->contents; |
1377 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1378 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5b93d8bb AM |
1379 | |
1380 | /* This reloc will be computed at runtime, so there's no | |
3b36f7e6 AM |
1381 | need to do anything now, unless this is a RELATIVE |
1382 | reloc in an unallocated section. */ | |
0bb2d96a | 1383 | if (skip == -1 |
5b93d8bb AM |
1384 | || (input_section->flags & SEC_ALLOC) != 0 |
1385 | || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE) | |
1386 | continue; | |
1387 | } | |
1388 | break; | |
1389 | ||
1390 | case (int)R_I370_COPY: | |
1391 | case (int)R_I370_RELATIVE: | |
8f615d07 | 1392 | (*_bfd_error_handler) |
d003868e AM |
1393 | ("%B: Relocation %s is not yet supported for symbol %s.", |
1394 | input_bfd, | |
8f615d07 AM |
1395 | i370_elf_howto_table[(int) r_type]->name, |
1396 | sym_name); | |
5b93d8bb AM |
1397 | |
1398 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1399 | ret = FALSE; |
5b93d8bb AM |
1400 | continue; |
1401 | } | |
1402 | ||
5b93d8bb AM |
1403 | #ifdef DEBUG |
1404 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", | |
1405 | howto->name, | |
1406 | (int)r_type, | |
1407 | sym_name, | |
1408 | r_symndx, | |
1409 | (long)offset, | |
1410 | (long)addend); | |
1411 | #endif | |
1412 | ||
1413 | r = _bfd_final_link_relocate (howto, | |
1414 | input_bfd, | |
1415 | input_section, | |
1416 | contents, | |
1417 | offset, | |
1418 | relocation, | |
1419 | addend); | |
1420 | ||
1421 | if (r != bfd_reloc_ok) | |
1422 | { | |
b34976b6 | 1423 | ret = FALSE; |
5b93d8bb AM |
1424 | switch (r) |
1425 | { | |
1426 | default: | |
1427 | break; | |
1428 | ||
1429 | case bfd_reloc_overflow: | |
1430 | { | |
1431 | const char *name; | |
1432 | ||
1433 | if (h != NULL) | |
dfeffb9f | 1434 | name = NULL; |
5b93d8bb AM |
1435 | else |
1436 | { | |
1437 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1438 | symtab_hdr->sh_link, | |
1439 | sym->st_name); | |
1440 | if (name == NULL) | |
1441 | break; | |
1442 | ||
1443 | if (*name == '\0') | |
1444 | name = bfd_section_name (input_bfd, sec); | |
1445 | } | |
1446 | ||
6609fa74 | 1447 | (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 1448 | (h ? &h->root : NULL), |
6609fa74 KH |
1449 | name, |
1450 | howto->name, | |
1451 | (bfd_vma) 0, | |
1452 | input_bfd, | |
1453 | input_section, | |
1454 | offset); | |
5b93d8bb AM |
1455 | } |
1456 | break; | |
1457 | ||
1458 | } | |
1459 | } | |
1460 | } | |
1461 | ||
5b93d8bb AM |
1462 | #ifdef DEBUG |
1463 | fprintf (stderr, "\n"); | |
1464 | #endif | |
1465 | ||
1466 | return ret; | |
1467 | } | |
1468 | ||
1469 | static void | |
1470 | i370_elf_post_process_headers (abfd, link_info) | |
1471 | bfd * abfd; | |
1472 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
1473 | { | |
1474 | Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ | |
1475 | ||
1476 | i_ehdrp = elf_elfheader (abfd); | |
1477 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
1478 | } | |
1479 | \f | |
1480 | #define TARGET_BIG_SYM bfd_elf32_i370_vec | |
1481 | #define TARGET_BIG_NAME "elf32-i370" | |
1482 | #define ELF_ARCH bfd_arch_i370 | |
1483 | #define ELF_MACHINE_CODE EM_S370 | |
1484 | #ifdef EM_I370_OLD | |
1485 | #define ELF_MACHINE_ALT1 EM_I370_OLD | |
1486 | #endif | |
1487 | #define ELF_MAXPAGESIZE 0x1000 | |
1488 | #define elf_info_to_howto i370_elf_info_to_howto | |
1489 | ||
5b93d8bb | 1490 | #define elf_backend_plt_not_loaded 1 |
b491616a | 1491 | #define elf_backend_rela_normal 1 |
5b93d8bb AM |
1492 | |
1493 | #define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup | |
1494 | #define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags | |
5b93d8bb AM |
1495 | #define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data |
1496 | #define elf_backend_relocate_section i370_elf_relocate_section | |
1497 | ||
1498 | /* dynamic loader support is mostly broken; just enough here to be able to | |
1499 | * link glibc's ld.so without errors. | |
1500 | */ | |
1501 | #define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections | |
1502 | #define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections | |
1503 | #define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections | |
1504 | #define elf_backend_fake_sections i370_elf_fake_sections | |
1505 | #define elf_backend_section_from_shdr i370_elf_section_from_shdr | |
1506 | #define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol | |
1507 | #define elf_backend_check_relocs i370_elf_check_relocs | |
1508 | ||
1509 | /* | |
1510 | #define elf_backend_add_symbol_hook i370_elf_add_symbol_hook | |
1511 | #define elf_backend_finish_dynamic_symbol i370_elf_finish_dynamic_symbol | |
1512 | #define elf_backend_additional_program_headers i370_elf_additional_program_headers | |
1513 | #define elf_backend_modify_segment_map i370_elf_modify_segment_map | |
1514 | */ | |
1515 | ||
1516 | #define elf_backend_post_process_headers i370_elf_post_process_headers | |
1517 | ||
b34976b6 AM |
1518 | static int i370_noop |
1519 | PARAMS ((void)); | |
dc810e39 AM |
1520 | |
1521 | static int i370_noop () | |
5b93d8bb AM |
1522 | { |
1523 | return 1; | |
1524 | } | |
1525 | ||
1526 | /* we need to define these at least as no-ops to link glibc ld.so */ | |
1527 | ||
1528 | #define elf_backend_add_symbol_hook \ | |
b34976b6 | 1529 | (bfd_boolean (*) \ |
555cd476 | 1530 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *, \ |
b34976b6 | 1531 | const char **, flagword *, asection **, bfd_vma *))) i370_noop |
5b93d8bb | 1532 | #define elf_backend_finish_dynamic_symbol \ |
b34976b6 AM |
1533 | (bfd_boolean (*) \ |
1534 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \ | |
1535 | Elf_Internal_Sym *))) i370_noop | |
5b93d8bb | 1536 | #define elf_backend_additional_program_headers \ |
b34976b6 | 1537 | (int (*) PARAMS ((bfd *))) i370_noop |
5b93d8bb | 1538 | #define elf_backend_modify_segment_map \ |
c84fca4d | 1539 | (bfd_boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) i370_noop |
5b93d8bb AM |
1540 | |
1541 | #include "elf32-target.h" |