Commit | Line | Data |
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ff12f303 | 1 | /* Alpha specific support for 64-bit ELF |
303e7257 | 2 | Copyright 1996, 1997 Free Software Foundation, Inc. |
297a4f1a ILT |
3 | Contributed by Richard Henderson <rth@tamu.edu>. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* We need a published ABI spec for this. Until one comes out, don't | |
22 | assume this'll remain unchanged forever. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | ||
29 | #include "elf/alpha.h" | |
30 | ||
31 | #define ALPHAECOFF | |
32 | ||
33 | #define NO_COFF_RELOCS | |
34 | #define NO_COFF_SYMBOLS | |
35 | #define NO_COFF_LINENOS | |
36 | ||
37 | /* Get the ECOFF swapping routines. Needed for the debug information. */ | |
38 | #include "coff/internal.h" | |
39 | #include "coff/sym.h" | |
40 | #include "coff/symconst.h" | |
41 | #include "coff/ecoff.h" | |
42 | #include "coff/alpha.h" | |
43 | #include "aout/ar.h" | |
44 | #include "libcoff.h" | |
45 | #include "libecoff.h" | |
46 | #define ECOFF_64 | |
47 | #include "ecoffswap.h" | |
48 | ||
303e7257 | 49 | static boolean elf64_alpha_mkobject PARAMS ((bfd *)); |
297a4f1a ILT |
50 | static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc |
51 | PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
52 | static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create | |
53 | PARAMS((bfd *)); | |
54 | ||
55 | static bfd_reloc_status_type elf64_alpha_reloc_nil | |
56 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
ff12f303 ILT |
57 | static bfd_reloc_status_type elf64_alpha_reloc_bad |
58 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
297a4f1a ILT |
59 | static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp |
60 | PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); | |
61 | static bfd_reloc_status_type elf64_alpha_reloc_gpdisp | |
62 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
297a4f1a ILT |
63 | |
64 | static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup | |
65 | PARAMS((bfd *, bfd_reloc_code_real_type)); | |
66 | static void elf64_alpha_info_to_howto | |
67 | PARAMS((bfd *, arelent *, Elf64_Internal_Rela *)); | |
68 | ||
69 | static boolean elf64_alpha_object_p | |
70 | PARAMS((bfd *)); | |
71 | static boolean elf64_alpha_section_from_shdr | |
72 | PARAMS((bfd *, Elf64_Internal_Shdr *, char *)); | |
73 | static boolean elf64_alpha_fake_sections | |
74 | PARAMS((bfd *, Elf64_Internal_Shdr *, asection *)); | |
75 | static int elf64_alpha_additional_program_headers | |
76 | PARAMS((bfd *)); | |
77 | static boolean elf64_alpha_create_got_section | |
78 | PARAMS((bfd *, struct bfd_link_info *)); | |
79 | static boolean elf64_alpha_create_dynamic_sections | |
80 | PARAMS((bfd *, struct bfd_link_info *)); | |
81 | ||
82 | static boolean elf64_alpha_read_ecoff_info | |
83 | PARAMS((bfd *, asection *, struct ecoff_debug_info *)); | |
303e7257 ILT |
84 | static boolean elf64_alpha_is_local_label_name |
85 | PARAMS((bfd *, const char *)); | |
297a4f1a ILT |
86 | static boolean elf64_alpha_find_nearest_line |
87 | PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
88 | const char **, unsigned int *)); | |
89 | ||
37d7888d | 90 | #if defined(__STDC__) || defined(ALMOST_STDC) |
297a4f1a | 91 | struct alpha_elf_link_hash_entry; |
37d7888d ILT |
92 | #endif |
93 | ||
297a4f1a ILT |
94 | static boolean elf64_alpha_output_extsym |
95 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); | |
96 | ||
ff12f303 ILT |
97 | static boolean elf64_alpha_can_merge_gots |
98 | PARAMS((bfd *, bfd *)); | |
99 | static void elf64_alpha_merge_gots | |
100 | PARAMS((bfd *, bfd *)); | |
303e7257 ILT |
101 | static boolean elf64_alpha_calc_got_offsets_for_symbol |
102 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); | |
103 | static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *)); | |
104 | static void elf64_alpha_strip_section_from_output PARAMS ((asection *)); | |
105 | static boolean elf64_alpha_always_size_sections | |
106 | PARAMS ((bfd *, struct bfd_link_info *)); | |
107 | static boolean elf64_alpha_calc_dynrel_sizes | |
108 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); | |
297a4f1a ILT |
109 | static boolean elf64_alpha_check_relocs |
110 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
111 | const Elf_Internal_Rela *)); | |
112 | static boolean elf64_alpha_adjust_dynamic_symbol | |
113 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
114 | static boolean elf64_alpha_size_dynamic_sections | |
115 | PARAMS((bfd *, struct bfd_link_info *)); | |
116 | static boolean elf64_alpha_adjust_dynindx | |
117 | PARAMS((struct elf_link_hash_entry *, PTR)); | |
118 | static boolean elf64_alpha_relocate_section | |
119 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
120 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
121 | static boolean elf64_alpha_finish_dynamic_symbol | |
122 | PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
123 | Elf_Internal_Sym *)); | |
124 | static boolean elf64_alpha_finish_dynamic_sections | |
125 | PARAMS((bfd *, struct bfd_link_info *)); | |
126 | static boolean elf64_alpha_final_link | |
127 | PARAMS((bfd *, struct bfd_link_info *)); | |
128 | ||
129 | \f | |
297a4f1a ILT |
130 | struct alpha_elf_link_hash_entry |
131 | { | |
132 | struct elf_link_hash_entry root; | |
133 | ||
134 | /* External symbol information. */ | |
135 | EXTR esym; | |
37d7888d | 136 | |
ff12f303 ILT |
137 | /* Cumulative flags for all the .got entries. */ |
138 | int flags; | |
139 | ||
37d7888d | 140 | /* Contexts (LITUSE) in which a literal was referenced. */ |
ff12f303 ILT |
141 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
142 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
143 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
144 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08 | |
145 | ||
146 | /* Used to implement multiple .got subsections. */ | |
147 | struct alpha_elf_got_entry | |
148 | { | |
149 | struct alpha_elf_got_entry *next; | |
150 | ||
151 | /* which .got subsection? */ | |
152 | bfd *gotobj; | |
153 | ||
154 | /* the addend in effect for this entry. */ | |
155 | bfd_vma addend; | |
156 | ||
157 | /* the .got offset for this entry. */ | |
158 | int got_offset; | |
159 | ||
160 | int flags; | |
161 | ||
162 | /* An additional flag. */ | |
163 | #define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10 | |
164 | } *got_entries; | |
165 | ||
166 | /* used to count non-got, non-plt relocations for delayed sizing | |
167 | of relocation sections. */ | |
168 | struct alpha_elf_reloc_entry | |
169 | { | |
170 | struct alpha_elf_reloc_entry *next; | |
171 | ||
172 | /* which .reloc section? */ | |
173 | asection *srel; | |
174 | ||
175 | /* what kind of relocation? */ | |
176 | unsigned long rtype; | |
177 | ||
178 | /* how many did we find? */ | |
179 | unsigned long count; | |
180 | } *reloc_entries; | |
297a4f1a ILT |
181 | }; |
182 | ||
183 | /* Alpha ELF linker hash table. */ | |
184 | ||
185 | struct alpha_elf_link_hash_table | |
186 | { | |
187 | struct elf_link_hash_table root; | |
ff12f303 ILT |
188 | |
189 | /* The head of a list of .got subsections linked through | |
190 | alpha_elf_tdata(abfd)->got_link_next. */ | |
191 | bfd *got_list; | |
297a4f1a ILT |
192 | }; |
193 | ||
194 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
195 | ||
196 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
197 | ((struct alpha_elf_link_hash_entry *) \ | |
198 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
199 | (copy), (follow))) | |
200 | ||
201 | /* Traverse a Alpha ELF linker hash table. */ | |
202 | ||
203 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
204 | (elf_link_hash_traverse \ | |
205 | (&(table)->root, \ | |
206 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
207 | (info))) | |
208 | ||
209 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
210 | ||
211 | #define alpha_elf_hash_table(p) \ | |
212 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
213 | ||
ff12f303 ILT |
214 | /* Get the object's symbols as our own entry type. */ |
215 | ||
216 | #define alpha_elf_sym_hashes(abfd) \ | |
217 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
218 | ||
219 | /* Should we do dynamic things to this symbol? */ | |
220 | ||
221 | #define alpha_elf_dynamic_symbol_p(h, info) \ | |
303e7257 | 222 | (((info)->shared && !(info)->symbolic && (h)->dynindx != -1) \ |
ff12f303 ILT |
223 | || (((h)->elf_link_hash_flags \ |
224 | & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \ | |
225 | == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))) | |
226 | ||
297a4f1a ILT |
227 | /* Create an entry in a Alpha ELF linker hash table. */ |
228 | ||
229 | static struct bfd_hash_entry * | |
230 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
231 | struct bfd_hash_entry *entry; | |
232 | struct bfd_hash_table *table; | |
233 | const char *string; | |
234 | { | |
235 | struct alpha_elf_link_hash_entry *ret = | |
236 | (struct alpha_elf_link_hash_entry *) entry; | |
237 | ||
238 | /* Allocate the structure if it has not already been allocated by a | |
239 | subclass. */ | |
240 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
241 | ret = ((struct alpha_elf_link_hash_entry *) | |
242 | bfd_hash_allocate (table, | |
243 | sizeof (struct alpha_elf_link_hash_entry))); | |
244 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
245 | return (struct bfd_hash_entry *) ret; | |
246 | ||
247 | /* Call the allocation method of the superclass. */ | |
248 | ret = ((struct alpha_elf_link_hash_entry *) | |
249 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
250 | table, string)); | |
251 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
252 | { | |
253 | /* Set local fields. */ | |
254 | memset (&ret->esym, 0, sizeof (EXTR)); | |
255 | /* We use -2 as a marker to indicate that the information has | |
256 | not been set. -1 means there is no associated ifd. */ | |
257 | ret->esym.ifd = -2; | |
37d7888d | 258 | ret->flags = 0; |
ff12f303 ILT |
259 | ret->got_entries = NULL; |
260 | ret->reloc_entries = NULL; | |
297a4f1a ILT |
261 | } |
262 | ||
263 | return (struct bfd_hash_entry *) ret; | |
264 | } | |
265 | ||
266 | /* Create a Alpha ELF linker hash table. */ | |
267 | ||
268 | static struct bfd_link_hash_table * | |
269 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
270 | bfd *abfd; | |
271 | { | |
272 | struct alpha_elf_link_hash_table *ret; | |
273 | ||
274 | ret = ((struct alpha_elf_link_hash_table *) | |
275 | bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table))); | |
276 | if (ret == (struct alpha_elf_link_hash_table *) NULL) | |
277 | return NULL; | |
278 | ||
279 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
280 | elf64_alpha_link_hash_newfunc)) | |
281 | { | |
282 | bfd_release (abfd, ret); | |
283 | return NULL; | |
284 | } | |
285 | ||
286 | return &ret->root.root; | |
287 | } | |
288 | \f | |
ff12f303 ILT |
289 | /* We have some private fields hanging off of the elf_tdata structure. */ |
290 | ||
291 | struct alpha_elf_obj_tdata | |
292 | { | |
293 | struct elf_obj_tdata root; | |
294 | ||
295 | /* For every input file, these are the got entries for that object's | |
296 | local symbols. */ | |
297 | struct alpha_elf_got_entry ** local_got_entries; | |
297a4f1a | 298 | |
ff12f303 ILT |
299 | /* For every input file, this is the object that owns the got that |
300 | this input file uses. */ | |
301 | bfd *gotobj; | |
302 | ||
303 | /* For every got, this is a linked list through the objects using this got */ | |
304 | bfd *in_got_link_next; | |
305 | ||
306 | /* For every got, this is a link to the next got subsegment. */ | |
307 | bfd *got_link_next; | |
308 | ||
309 | /* For every got, this is the section. */ | |
310 | asection *got; | |
311 | ||
312 | /* For every got, this is it's total number of *entries*. */ | |
313 | int total_got_entries; | |
314 | ||
315 | /* For every got, this is the sum of the number of *entries* required | |
316 | to hold all of the member object's local got. */ | |
317 | int n_local_got_entries; | |
318 | }; | |
319 | ||
320 | #define alpha_elf_tdata(abfd) \ | |
321 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
322 | ||
323 | static boolean | |
324 | elf64_alpha_mkobject (abfd) | |
325 | bfd *abfd; | |
326 | { | |
327 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); | |
328 | if (abfd->tdata.any == NULL) | |
329 | return false; | |
330 | return true; | |
331 | } | |
332 | \f | |
297a4f1a ILT |
333 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
334 | from smaller values. Start with zero, widen, *then* decrement. */ | |
335 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
336 | ||
337 | static reloc_howto_type elf64_alpha_howto_table[] = | |
338 | { | |
339 | HOWTO (R_ALPHA_NONE, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 8, /* bitsize */ | |
343 | true, /* pc_relative */ | |
344 | 0, /* bitpos */ | |
345 | complain_overflow_dont, /* complain_on_overflow */ | |
346 | elf64_alpha_reloc_nil, /* special_function */ | |
347 | "NONE", /* name */ | |
348 | false, /* partial_inplace */ | |
349 | 0, /* src_mask */ | |
350 | 0, /* dst_mask */ | |
351 | true), /* pcrel_offset */ | |
352 | ||
353 | /* A 32 bit reference to a symbol. */ | |
354 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 32, /* bitsize */ | |
358 | false, /* pc_relative */ | |
359 | 0, /* bitpos */ | |
360 | complain_overflow_bitfield, /* complain_on_overflow */ | |
361 | 0, /* special_function */ | |
362 | "REFLONG", /* name */ | |
363 | false, /* partial_inplace */ | |
364 | 0xffffffff, /* src_mask */ | |
365 | 0xffffffff, /* dst_mask */ | |
366 | false), /* pcrel_offset */ | |
367 | ||
368 | /* A 64 bit reference to a symbol. */ | |
369 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 64, /* bitsize */ | |
373 | false, /* pc_relative */ | |
374 | 0, /* bitpos */ | |
375 | complain_overflow_bitfield, /* complain_on_overflow */ | |
376 | 0, /* special_function */ | |
377 | "REFQUAD", /* name */ | |
378 | false, /* partial_inplace */ | |
379 | MINUS_ONE, /* src_mask */ | |
380 | MINUS_ONE, /* dst_mask */ | |
381 | false), /* pcrel_offset */ | |
382 | ||
383 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
384 | that when the value is used the value of the gp register will be | |
385 | added in. */ | |
386 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 32, /* bitsize */ | |
390 | false, /* pc_relative */ | |
391 | 0, /* bitpos */ | |
392 | complain_overflow_bitfield, /* complain_on_overflow */ | |
393 | 0, /* special_function */ | |
394 | "GPREL32", /* name */ | |
395 | false, /* partial_inplace */ | |
396 | 0xffffffff, /* src_mask */ | |
397 | 0xffffffff, /* dst_mask */ | |
398 | false), /* pcrel_offset */ | |
399 | ||
400 | /* Used for an instruction that refers to memory off the GP register. */ | |
401 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
405 | false, /* pc_relative */ | |
406 | 0, /* bitpos */ | |
407 | complain_overflow_signed, /* complain_on_overflow */ | |
408 | 0, /* special_function */ | |
ff12f303 | 409 | "ELF_LITERAL", /* name */ |
297a4f1a ILT |
410 | false, /* partial_inplace */ |
411 | 0xffff, /* src_mask */ | |
412 | 0xffff, /* dst_mask */ | |
413 | false), /* pcrel_offset */ | |
414 | ||
ff12f303 | 415 | /* This reloc only appears immediately following an ELF_LITERAL reloc. |
297a4f1a ILT |
416 | It identifies a use of the literal. The symbol index is special: |
417 | 1 means the literal address is in the base register of a memory | |
418 | format instruction; 2 means the literal address is in the byte | |
419 | offset register of a byte-manipulation instruction; 3 means the | |
420 | literal address is in the target register of a jsr instruction. | |
421 | This does not actually do any relocation. */ | |
422 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 32, /* bitsize */ | |
426 | false, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_dont, /* complain_on_overflow */ | |
429 | elf64_alpha_reloc_nil, /* special_function */ | |
430 | "LITUSE", /* name */ | |
431 | false, /* partial_inplace */ | |
432 | 0, /* src_mask */ | |
433 | 0, /* dst_mask */ | |
434 | false), /* pcrel_offset */ | |
435 | ||
436 | /* Load the gp register. This is always used for a ldah instruction | |
437 | which loads the upper 16 bits of the gp register. The symbol | |
438 | index of the GPDISP instruction is an offset in bytes to the lda | |
439 | instruction that loads the lower 16 bits. The value to use for | |
440 | the relocation is the difference between the GP value and the | |
441 | current location; the load will always be done against a register | |
442 | holding the current address. | |
443 | ||
ff12f303 | 444 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If |
297a4f1a ILT |
445 | any offset is present in the instructions, it is an offset from |
446 | the register to the ldah instruction. This lets us avoid any | |
447 | stupid hackery like inventing a gp value to do partial relocation | |
448 | against. Also unlike ECOFF, we do the whole relocation off of | |
449 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
450 | space consuming bit, that, since all the information was present | |
451 | in the GPDISP_HI16 reloc. */ | |
452 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
453 | 16, /* rightshift */ | |
454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 16, /* bitsize */ | |
456 | false, /* pc_relative */ | |
457 | 0, /* bitpos */ | |
458 | complain_overflow_dont, /* complain_on_overflow */ | |
459 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
460 | "GPDISP", /* name */ | |
461 | false, /* partial_inplace */ | |
462 | 0xffff, /* src_mask */ | |
463 | 0xffff, /* dst_mask */ | |
464 | true), /* pcrel_offset */ | |
465 | ||
466 | /* A 21 bit branch. */ | |
467 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
468 | 2, /* rightshift */ | |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 21, /* bitsize */ | |
471 | true, /* pc_relative */ | |
472 | 0, /* bitpos */ | |
473 | complain_overflow_signed, /* complain_on_overflow */ | |
474 | 0, /* special_function */ | |
475 | "BRADDR", /* name */ | |
476 | false, /* partial_inplace */ | |
477 | 0x1fffff, /* src_mask */ | |
478 | 0x1fffff, /* dst_mask */ | |
479 | true), /* pcrel_offset */ | |
480 | ||
481 | /* A hint for a jump to a register. */ | |
482 | HOWTO (R_ALPHA_HINT, /* type */ | |
483 | 2, /* rightshift */ | |
484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 14, /* bitsize */ | |
486 | true, /* pc_relative */ | |
487 | 0, /* bitpos */ | |
488 | complain_overflow_dont, /* complain_on_overflow */ | |
489 | 0, /* special_function */ | |
490 | "HINT", /* name */ | |
491 | false, /* partial_inplace */ | |
492 | 0x3fff, /* src_mask */ | |
493 | 0x3fff, /* dst_mask */ | |
494 | true), /* pcrel_offset */ | |
495 | ||
496 | /* 16 bit PC relative offset. */ | |
497 | HOWTO (R_ALPHA_SREL16, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 16, /* bitsize */ | |
501 | true, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_signed, /* complain_on_overflow */ | |
504 | 0, /* special_function */ | |
505 | "SREL16", /* name */ | |
506 | false, /* partial_inplace */ | |
507 | 0xffff, /* src_mask */ | |
508 | 0xffff, /* dst_mask */ | |
509 | false), /* pcrel_offset */ | |
510 | ||
511 | /* 32 bit PC relative offset. */ | |
512 | HOWTO (R_ALPHA_SREL32, /* type */ | |
513 | 0, /* rightshift */ | |
514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
515 | 32, /* bitsize */ | |
516 | true, /* pc_relative */ | |
517 | 0, /* bitpos */ | |
518 | complain_overflow_signed, /* complain_on_overflow */ | |
519 | 0, /* special_function */ | |
520 | "SREL32", /* name */ | |
521 | false, /* partial_inplace */ | |
522 | 0xffffffff, /* src_mask */ | |
523 | 0xffffffff, /* dst_mask */ | |
524 | false), /* pcrel_offset */ | |
525 | ||
526 | /* A 64 bit PC relative offset. */ | |
527 | HOWTO (R_ALPHA_SREL64, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
530 | 64, /* bitsize */ | |
531 | true, /* pc_relative */ | |
532 | 0, /* bitpos */ | |
533 | complain_overflow_signed, /* complain_on_overflow */ | |
534 | 0, /* special_function */ | |
535 | "SREL64", /* name */ | |
536 | false, /* partial_inplace */ | |
537 | MINUS_ONE, /* src_mask */ | |
538 | MINUS_ONE, /* dst_mask */ | |
539 | false), /* pcrel_offset */ | |
540 | ||
541 | /* Push a value on the reloc evaluation stack. */ | |
542 | HOWTO (ALPHA_R_OP_PUSH, /* type */ | |
543 | 0, /* rightshift */ | |
544 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
545 | 0, /* bitsize */ | |
546 | false, /* pc_relative */ | |
547 | 0, /* bitpos */ | |
548 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 549 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
550 | "OP_PUSH", /* name */ |
551 | false, /* partial_inplace */ | |
552 | 0, /* src_mask */ | |
553 | 0, /* dst_mask */ | |
554 | false), /* pcrel_offset */ | |
555 | ||
556 | /* Store the value from the stack at the given address. Store it in | |
557 | a bitfield of size r_size starting at bit position r_offset. */ | |
558 | HOWTO (ALPHA_R_OP_STORE, /* type */ | |
559 | 0, /* rightshift */ | |
560 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
561 | 64, /* bitsize */ | |
562 | false, /* pc_relative */ | |
563 | 0, /* bitpos */ | |
564 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 565 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
566 | "OP_STORE", /* name */ |
567 | false, /* partial_inplace */ | |
568 | 0, /* src_mask */ | |
569 | MINUS_ONE, /* dst_mask */ | |
570 | false), /* pcrel_offset */ | |
571 | ||
572 | /* Subtract the reloc address from the value on the top of the | |
573 | relocation stack. */ | |
574 | HOWTO (ALPHA_R_OP_PSUB, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
577 | 0, /* bitsize */ | |
578 | false, /* pc_relative */ | |
579 | 0, /* bitpos */ | |
580 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 581 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
582 | "OP_PSUB", /* name */ |
583 | false, /* partial_inplace */ | |
584 | 0, /* src_mask */ | |
585 | 0, /* dst_mask */ | |
586 | false), /* pcrel_offset */ | |
587 | ||
588 | /* Shift the value on the top of the relocation stack right by the | |
589 | given value. */ | |
590 | HOWTO (ALPHA_R_OP_PRSHIFT, /* type */ | |
591 | 0, /* rightshift */ | |
592 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
593 | 0, /* bitsize */ | |
594 | false, /* pc_relative */ | |
595 | 0, /* bitpos */ | |
596 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 597 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
598 | "OP_PRSHIFT", /* name */ |
599 | false, /* partial_inplace */ | |
600 | 0, /* src_mask */ | |
601 | 0, /* dst_mask */ | |
602 | false), /* pcrel_offset */ | |
603 | ||
604 | /* Misc ELF relocations. */ | |
605 | HOWTO (R_ALPHA_COPY, | |
606 | 0, | |
607 | 0, | |
608 | 0, | |
609 | false, | |
610 | 0, | |
611 | complain_overflow_dont, | |
612 | bfd_elf_generic_reloc, | |
613 | "COPY", | |
614 | false, | |
615 | 0, | |
ff12f303 | 616 | 0, |
297a4f1a ILT |
617 | true), |
618 | ||
619 | HOWTO (R_ALPHA_GLOB_DAT, | |
620 | 0, | |
621 | 0, | |
622 | 0, | |
623 | false, | |
624 | 0, | |
625 | complain_overflow_dont, | |
626 | bfd_elf_generic_reloc, | |
627 | "GLOB_DAT", | |
628 | false, | |
629 | 0, | |
ff12f303 | 630 | 0, |
297a4f1a ILT |
631 | true), |
632 | ||
633 | HOWTO (R_ALPHA_JMP_SLOT, | |
634 | 0, | |
635 | 0, | |
636 | 0, | |
637 | false, | |
638 | 0, | |
639 | complain_overflow_dont, | |
640 | bfd_elf_generic_reloc, | |
641 | "JMP_SLOT", | |
642 | false, | |
643 | 0, | |
644 | 0, | |
645 | true), | |
646 | ||
647 | HOWTO (R_ALPHA_RELATIVE, | |
648 | 0, | |
649 | 0, | |
650 | 0, | |
651 | false, | |
652 | 0, | |
653 | complain_overflow_dont, | |
654 | bfd_elf_generic_reloc, | |
ff12f303 | 655 | "RELATIVE", |
297a4f1a ILT |
656 | false, |
657 | 0, | |
658 | 0, | |
659 | true) | |
660 | }; | |
661 | ||
ff12f303 ILT |
662 | /* A relocation function which doesn't do anything. */ |
663 | ||
297a4f1a ILT |
664 | static bfd_reloc_status_type |
665 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
666 | bfd *abfd; | |
667 | arelent *reloc; | |
668 | asymbol *sym; | |
669 | PTR data; | |
670 | asection *sec; | |
671 | bfd *output_bfd; | |
672 | char **error_message; | |
673 | { | |
674 | if (output_bfd) | |
675 | reloc->address += sec->output_offset; | |
676 | return bfd_reloc_ok; | |
677 | } | |
678 | ||
ff12f303 ILT |
679 | /* A relocation function used for an unsupported reloc. */ |
680 | ||
681 | static bfd_reloc_status_type | |
682 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
683 | bfd *abfd; | |
684 | arelent *reloc; | |
685 | asymbol *sym; | |
686 | PTR data; | |
687 | asection *sec; | |
688 | bfd *output_bfd; | |
689 | char **error_message; | |
690 | { | |
691 | if (output_bfd) | |
692 | reloc->address += sec->output_offset; | |
693 | return bfd_reloc_notsupported; | |
694 | } | |
695 | ||
696 | /* Do the work of the GPDISP relocation. */ | |
697 | ||
297a4f1a ILT |
698 | static bfd_reloc_status_type |
699 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
700 | bfd *abfd; | |
701 | bfd_vma gpdisp; | |
ff12f303 ILT |
702 | bfd_byte *p_ldah; |
703 | bfd_byte *p_lda; | |
297a4f1a ILT |
704 | { |
705 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
706 | bfd_vma addend; | |
707 | unsigned long i_ldah, i_lda; | |
708 | ||
ff12f303 ILT |
709 | i_ldah = bfd_get_32 (abfd, p_ldah); |
710 | i_lda = bfd_get_32 (abfd, p_lda); | |
297a4f1a ILT |
711 | |
712 | /* Complain if the instructions are not correct. */ | |
713 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
714 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
715 | ret = bfd_reloc_dangerous; | |
716 | ||
717 | /* Extract the user-supplied offset, mirroring the sign extensions | |
718 | that the instructions perform. */ | |
719 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
720 | addend = (addend ^ 0x80008000) - 0x80008000; | |
721 | ||
722 | gpdisp += addend; | |
723 | ||
ff12f303 | 724 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma)0x80000000 |
297a4f1a ILT |
725 | || gpdisp >= 0x7fff8000) |
726 | ret = bfd_reloc_overflow; | |
727 | ||
728 | /* compensate for the sign extension again. */ | |
729 | i_ldah = ((i_ldah & 0xffff0000) | |
730 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
731 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
732 | ||
733 | bfd_put_32 (abfd, i_ldah, p_ldah); | |
734 | bfd_put_32 (abfd, i_lda, p_lda); | |
735 | ||
736 | return ret; | |
737 | } | |
738 | ||
ff12f303 ILT |
739 | /* The special function for the GPDISP reloc. */ |
740 | ||
297a4f1a ILT |
741 | static bfd_reloc_status_type |
742 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
743 | output_bfd, err_msg) | |
744 | bfd *abfd; | |
745 | arelent *reloc_entry; | |
746 | asymbol *sym; | |
747 | PTR data; | |
748 | asection *input_section; | |
749 | bfd *output_bfd; | |
750 | char **err_msg; | |
751 | { | |
752 | bfd_reloc_status_type ret; | |
753 | bfd_vma gp, relocation; | |
754 | bfd_byte *p_ldah, *p_lda; | |
755 | ||
756 | /* Don't do anything if we're not doing a final link. */ | |
757 | if (output_bfd) | |
758 | { | |
759 | reloc_entry->address += input_section->output_offset; | |
760 | return bfd_reloc_ok; | |
761 | } | |
762 | ||
763 | if (reloc_entry->address > input_section->_cooked_size || | |
764 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) | |
765 | return bfd_reloc_outofrange; | |
766 | ||
ff12f303 | 767 | /* The gp used in the portion of the output object to which this |
297a4f1a ILT |
768 | input object belongs is cached on the input bfd. */ |
769 | gp = _bfd_get_gp_value (abfd); | |
770 | ||
771 | relocation = (input_section->output_section->vma | |
772 | + input_section->output_offset | |
773 | + reloc_entry->address); | |
774 | ||
ff12f303 | 775 | p_ldah = (bfd_byte *) data + reloc_entry->address; |
297a4f1a ILT |
776 | p_lda = p_ldah + reloc_entry->addend; |
777 | ||
778 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
779 | ||
780 | /* Complain if the instructions are not correct. */ | |
781 | if (ret == bfd_reloc_dangerous) | |
ff12f303 | 782 | *err_msg = "GPDISP relocation did not find ldah and lda instructions"; |
297a4f1a ILT |
783 | |
784 | return ret; | |
785 | } | |
786 | ||
297a4f1a ILT |
787 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
788 | ||
789 | struct elf_reloc_map | |
790 | { | |
791 | bfd_reloc_code_real_type bfd_reloc_val; | |
792 | int elf_reloc_val; | |
793 | }; | |
794 | ||
795 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
796 | { | |
797 | {BFD_RELOC_NONE, R_ALPHA_NONE}, | |
798 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
799 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
800 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
801 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
ff12f303 | 802 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, |
297a4f1a ILT |
803 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, |
804 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
ff12f303 ILT |
805 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, |
806 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
807 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
808 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
809 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
297a4f1a ILT |
810 | }; |
811 | ||
812 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
813 | ||
814 | static reloc_howto_type * | |
815 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
816 | bfd *abfd; | |
817 | bfd_reloc_code_real_type code; | |
818 | { | |
819 | const struct elf_reloc_map *i, *e; | |
820 | i = e = elf64_alpha_reloc_map; | |
821 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
822 | for (; i != e; ++i) | |
823 | { | |
824 | if (i->bfd_reloc_val == code) | |
825 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
826 | } | |
827 | return 0; | |
828 | } | |
829 | ||
830 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
831 | ||
832 | static void | |
833 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
834 | bfd *abfd; | |
835 | arelent *cache_ptr; | |
836 | Elf64_Internal_Rela *dst; | |
837 | { | |
838 | unsigned r_type; | |
839 | ||
840 | r_type = ELF64_R_TYPE(dst->r_info); | |
841 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
842 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
843 | } | |
844 | \f | |
845 | /* PLT/GOT Stuff */ | |
846 | #define PLT_HEADER_SIZE 32 | |
847 | #define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */ | |
848 | #define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */ | |
849 | #define PLT_HEADER_WORD3 0x47ff041f /* nop */ | |
850 | #define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */ | |
851 | ||
852 | #define PLT_ENTRY_SIZE 12 | |
853 | #define PLT_ENTRY_WORD1 0x279f0000 /* ldah $28, 0($31) */ | |
854 | #define PLT_ENTRY_WORD2 0x239c0000 /* lda $28, 0($28) */ | |
855 | #define PLT_ENTRY_WORD3 0xc3e00000 /* br $31, plt0 */ | |
856 | ||
ff12f303 | 857 | #define MAX_GOT_ENTRIES (64*1024 / 8) |
297a4f1a ILT |
858 | |
859 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
860 | \f | |
861 | /* Set the right machine number for an Alpha ELF file. */ | |
862 | ||
863 | static boolean | |
864 | elf64_alpha_object_p (abfd) | |
865 | bfd *abfd; | |
866 | { | |
867 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
868 | } | |
869 | \f | |
ff12f303 | 870 | /* Handle an Alpha specific section when reading an object file. This |
297a4f1a ILT |
871 | is called when elfcode.h finds a section with an unknown type. |
872 | FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure | |
873 | how to. */ | |
874 | ||
875 | static boolean | |
876 | elf64_alpha_section_from_shdr (abfd, hdr, name) | |
877 | bfd *abfd; | |
878 | Elf64_Internal_Shdr *hdr; | |
879 | char *name; | |
880 | { | |
881 | asection *newsect; | |
882 | ||
883 | /* There ought to be a place to keep ELF backend specific flags, but | |
884 | at the moment there isn't one. We just keep track of the | |
885 | sections by their name, instead. Fortunately, the ABI gives | |
886 | suggested names for all the MIPS specific sections, so we will | |
887 | probably get away with this. */ | |
888 | switch (hdr->sh_type) | |
889 | { | |
890 | case SHT_ALPHA_DEBUG: | |
891 | if (strcmp (name, ".mdebug") != 0) | |
892 | return false; | |
893 | break; | |
894 | #ifdef ERIC_neverdef | |
895 | case SHT_ALPHA_REGINFO: | |
896 | if (strcmp (name, ".reginfo") != 0 | |
897 | || hdr->sh_size != sizeof (Elf64_External_RegInfo)) | |
898 | return false; | |
899 | break; | |
900 | #endif | |
901 | default: | |
902 | return false; | |
903 | } | |
904 | ||
905 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
906 | return false; | |
907 | newsect = hdr->bfd_section; | |
908 | ||
909 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
910 | { | |
911 | if (! bfd_set_section_flags (abfd, newsect, | |
912 | (bfd_get_section_flags (abfd, newsect) | |
913 | | SEC_DEBUGGING))) | |
914 | return false; | |
915 | } | |
916 | ||
917 | #ifdef ERIC_neverdef | |
918 | /* For a .reginfo section, set the gp value in the tdata information | |
919 | from the contents of this section. We need the gp value while | |
920 | processing relocs, so we just get it now. */ | |
921 | if (hdr->sh_type == SHT_ALPHA_REGINFO) | |
922 | { | |
923 | Elf64_External_RegInfo ext; | |
924 | Elf64_RegInfo s; | |
925 | ||
926 | if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext, | |
927 | (file_ptr) 0, sizeof ext)) | |
928 | return false; | |
929 | bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s); | |
930 | elf_gp (abfd) = s.ri_gp_value; | |
931 | } | |
932 | #endif | |
933 | ||
934 | return true; | |
935 | } | |
936 | ||
937 | /* Set the correct type for an Alpha ELF section. We do this by the | |
938 | section name, which is a hack, but ought to work. */ | |
939 | ||
940 | static boolean | |
941 | elf64_alpha_fake_sections (abfd, hdr, sec) | |
942 | bfd *abfd; | |
943 | Elf64_Internal_Shdr *hdr; | |
944 | asection *sec; | |
945 | { | |
946 | register const char *name; | |
947 | ||
948 | name = bfd_get_section_name (abfd, sec); | |
949 | ||
950 | if (strcmp (name, ".mdebug") == 0) | |
951 | { | |
952 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
953 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
954 | entsize of 0. FIXME: Does this matter? */ | |
955 | if ((abfd->flags & DYNAMIC) != 0 ) | |
956 | hdr->sh_entsize = 0; | |
957 | else | |
958 | hdr->sh_entsize = 1; | |
959 | } | |
960 | #ifdef ERIC_neverdef | |
961 | else if (strcmp (name, ".reginfo") == 0) | |
962 | { | |
963 | hdr->sh_type = SHT_ALPHA_REGINFO; | |
964 | /* In a shared object on Irix 5.3, the .reginfo section has an | |
965 | entsize of 0x18. FIXME: Does this matter? */ | |
966 | if ((abfd->flags & DYNAMIC) != 0) | |
967 | hdr->sh_entsize = sizeof (Elf64_External_RegInfo); | |
968 | else | |
969 | hdr->sh_entsize = 1; | |
970 | ||
971 | /* Force the section size to the correct value, even if the | |
972 | linker thinks it is larger. The link routine below will only | |
973 | write out this much data for .reginfo. */ | |
974 | hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo); | |
975 | } | |
976 | else if (strcmp (name, ".hash") == 0 | |
977 | || strcmp (name, ".dynamic") == 0 | |
978 | || strcmp (name, ".dynstr") == 0) | |
979 | { | |
980 | hdr->sh_entsize = 0; | |
981 | hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES; | |
982 | } | |
ff12f303 | 983 | #endif |
297a4f1a ILT |
984 | else if (strcmp (name, ".sdata") == 0 |
985 | || strcmp (name, ".sbss") == 0 | |
986 | || strcmp (name, ".lit4") == 0 | |
987 | || strcmp (name, ".lit8") == 0) | |
988 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
297a4f1a ILT |
989 | |
990 | return true; | |
991 | } | |
992 | ||
ff12f303 ILT |
993 | /* Return the number of additional phdrs we will need. */ |
994 | ||
297a4f1a ILT |
995 | static int |
996 | elf64_alpha_additional_program_headers (abfd) | |
997 | bfd *abfd; | |
998 | { | |
999 | asection *s; | |
1000 | int ret; | |
1001 | ||
1002 | ret = 0; | |
1003 | ||
1004 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
1005 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
1006 | { | |
1007 | /* We need a PT_ALPHA_REGINFO segment. */ | |
1008 | ++ret; | |
1009 | } | |
1010 | ||
1011 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
1012 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
1013 | { | |
1014 | /* We need a PT_ALPHA_RTPROC segment. */ | |
1015 | ++ret; | |
1016 | } | |
1017 | ||
1018 | return ret; | |
1019 | } | |
1020 | ||
ff12f303 ILT |
1021 | /* Create the .got section. */ |
1022 | ||
297a4f1a ILT |
1023 | static boolean |
1024 | elf64_alpha_create_got_section(abfd, info) | |
1025 | bfd *abfd; | |
1026 | struct bfd_link_info *info; | |
1027 | { | |
1028 | asection *s; | |
297a4f1a ILT |
1029 | |
1030 | if (bfd_get_section_by_name (abfd, ".got")) | |
1031 | return true; | |
1032 | ||
ff12f303 | 1033 | s = bfd_make_section (abfd, ".got"); |
297a4f1a ILT |
1034 | if (s == NULL |
1035 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1036 | | SEC_HAS_CONTENTS |
1037 | | SEC_IN_MEMORY | |
1038 | | SEC_LINKER_CREATED)) | |
297a4f1a ILT |
1039 | || !bfd_set_section_alignment (abfd, s, 3)) |
1040 | return false; | |
1041 | ||
ff12f303 | 1042 | alpha_elf_tdata (abfd)->got = s; |
297a4f1a ILT |
1043 | |
1044 | return true; | |
1045 | } | |
1046 | ||
ff12f303 ILT |
1047 | /* Create all the dynamic sections. */ |
1048 | ||
297a4f1a ILT |
1049 | static boolean |
1050 | elf64_alpha_create_dynamic_sections (abfd, info) | |
1051 | bfd *abfd; | |
1052 | struct bfd_link_info *info; | |
1053 | { | |
ff12f303 | 1054 | asection *s; |
297a4f1a ILT |
1055 | struct elf_link_hash_entry *h; |
1056 | ||
1057 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
1058 | ||
1059 | s = bfd_make_section (abfd, ".plt"); | |
1060 | if (s == NULL | |
1061 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1062 | | SEC_HAS_CONTENTS |
1063 | | SEC_IN_MEMORY | |
1064 | | SEC_LINKER_CREATED | |
297a4f1a ILT |
1065 | | SEC_CODE)) |
1066 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1067 | return false; | |
1068 | ||
1069 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
1070 | .plt section. */ | |
1071 | h = NULL; | |
1072 | if (! (_bfd_generic_link_add_one_symbol | |
1073 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1074 | (bfd_vma) 0, (const char *) NULL, false, | |
1075 | get_elf_backend_data (abfd)->collect, | |
1076 | (struct bfd_link_hash_entry **) &h))) | |
1077 | return false; | |
1078 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1079 | h->type = STT_OBJECT; | |
1080 | ||
1081 | if (info->shared | |
1082 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1083 | return false; | |
1084 | ||
1085 | s = bfd_make_section (abfd, ".rela.plt"); | |
1086 | if (s == NULL | |
1087 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1088 | | SEC_HAS_CONTENTS |
1089 | | SEC_IN_MEMORY | |
1090 | | SEC_LINKER_CREATED | |
1091 | | SEC_READONLY)) | |
297a4f1a ILT |
1092 | || ! bfd_set_section_alignment (abfd, s, 3)) |
1093 | return false; | |
1094 | ||
ff12f303 ILT |
1095 | /* We may or may not have created a .got section for this object, but |
1096 | we definitely havn't done the rest of the work. */ | |
1097 | ||
297a4f1a ILT |
1098 | if (!elf64_alpha_create_got_section (abfd, info)) |
1099 | return false; | |
1100 | ||
ff12f303 ILT |
1101 | s = bfd_make_section(abfd, ".rela.got"); |
1102 | if (s == NULL | |
1103 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1104 | | SEC_HAS_CONTENTS | |
1105 | | SEC_IN_MEMORY | |
1106 | | SEC_LINKER_CREATED | |
1107 | | SEC_READONLY)) | |
1108 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1109 | return false; | |
297a4f1a | 1110 | |
ff12f303 ILT |
1111 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1112 | dynobj's .got section. We don't do this in the linker script | |
1113 | because we don't want to define the symbol if we are not creating | |
1114 | a global offset table. */ | |
1115 | h = NULL; | |
1116 | if (!(_bfd_generic_link_add_one_symbol | |
1117 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1118 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1119 | false, get_elf_backend_data (abfd)->collect, | |
1120 | (struct bfd_link_hash_entry **) &h))) | |
1121 | return false; | |
1122 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1123 | h->type = STT_OBJECT; | |
297a4f1a | 1124 | |
ff12f303 ILT |
1125 | if (info->shared |
1126 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1127 | return false; | |
1128 | ||
1129 | elf_hash_table (info)->hgot = h; | |
1130 | ||
1131 | return true; | |
1132 | } | |
297a4f1a ILT |
1133 | \f |
1134 | /* Read ECOFF debugging information from a .mdebug section into a | |
1135 | ecoff_debug_info structure. */ | |
1136 | ||
1137 | static boolean | |
1138 | elf64_alpha_read_ecoff_info (abfd, section, debug) | |
1139 | bfd *abfd; | |
1140 | asection *section; | |
1141 | struct ecoff_debug_info *debug; | |
1142 | { | |
1143 | HDRR *symhdr; | |
1144 | const struct ecoff_debug_swap *swap; | |
1145 | char *ext_hdr = NULL; | |
1146 | ||
1147 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1148 | ||
1149 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); | |
1150 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1151 | goto error_return; | |
1152 | ||
1153 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
1154 | swap->external_hdr_size) | |
1155 | == false) | |
1156 | goto error_return; | |
1157 | ||
1158 | symhdr = &debug->symbolic_header; | |
1159 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1160 | ||
1161 | /* The symbolic header contains absolute file offsets and sizes to | |
1162 | read. */ | |
1163 | #define READ(ptr, offset, count, size, type) \ | |
1164 | if (symhdr->count == 0) \ | |
1165 | debug->ptr = NULL; \ | |
1166 | else \ | |
1167 | { \ | |
1168 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ | |
1169 | if (debug->ptr == NULL) \ | |
1170 | goto error_return; \ | |
1171 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1172 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
1173 | abfd) != size * symhdr->count)) \ | |
1174 | goto error_return; \ | |
1175 | } | |
1176 | ||
1177 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
1178 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1179 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1180 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1181 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1182 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1183 | union aux_ext *); | |
1184 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1185 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1186 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1187 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1188 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1189 | #undef READ | |
1190 | ||
1191 | debug->fdr = NULL; | |
1192 | debug->adjust = NULL; | |
1193 | ||
1194 | return true; | |
1195 | ||
1196 | error_return: | |
1197 | if (ext_hdr != NULL) | |
1198 | free (ext_hdr); | |
1199 | if (debug->line != NULL) | |
1200 | free (debug->line); | |
1201 | if (debug->external_dnr != NULL) | |
1202 | free (debug->external_dnr); | |
1203 | if (debug->external_pdr != NULL) | |
1204 | free (debug->external_pdr); | |
1205 | if (debug->external_sym != NULL) | |
1206 | free (debug->external_sym); | |
1207 | if (debug->external_opt != NULL) | |
1208 | free (debug->external_opt); | |
1209 | if (debug->external_aux != NULL) | |
1210 | free (debug->external_aux); | |
1211 | if (debug->ss != NULL) | |
1212 | free (debug->ss); | |
1213 | if (debug->ssext != NULL) | |
1214 | free (debug->ssext); | |
1215 | if (debug->external_fdr != NULL) | |
1216 | free (debug->external_fdr); | |
1217 | if (debug->external_rfd != NULL) | |
1218 | free (debug->external_rfd); | |
1219 | if (debug->external_ext != NULL) | |
1220 | free (debug->external_ext); | |
1221 | return false; | |
1222 | } | |
1223 | ||
1224 | /* Alpha ELF local labels start with '$'. */ | |
1225 | ||
1226 | static boolean | |
303e7257 | 1227 | elf64_alpha_is_local_label_name (abfd, name) |
297a4f1a | 1228 | bfd *abfd; |
303e7257 | 1229 | const char *name; |
297a4f1a | 1230 | { |
303e7257 | 1231 | return name[0] == '$'; |
297a4f1a ILT |
1232 | } |
1233 | ||
1234 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
1235 | routine in order to handle the ECOFF debugging information. We | |
1236 | still call this mips_elf_find_line because of the slot | |
1237 | find_line_info in elf_obj_tdata is declared that way. */ | |
1238 | ||
1239 | struct mips_elf_find_line | |
1240 | { | |
1241 | struct ecoff_debug_info d; | |
1242 | struct ecoff_find_line i; | |
1243 | }; | |
1244 | ||
1245 | static boolean | |
1246 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
1247 | functionname_ptr, line_ptr) | |
1248 | bfd *abfd; | |
1249 | asection *section; | |
1250 | asymbol **symbols; | |
1251 | bfd_vma offset; | |
1252 | const char **filename_ptr; | |
1253 | const char **functionname_ptr; | |
1254 | unsigned int *line_ptr; | |
1255 | { | |
1256 | asection *msec; | |
1257 | ||
1258 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
1259 | if (msec != NULL) | |
1260 | { | |
1261 | flagword origflags; | |
1262 | struct mips_elf_find_line *fi; | |
1263 | const struct ecoff_debug_swap * const swap = | |
1264 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1265 | ||
1266 | /* If we are called during a link, alpha_elf_final_link may have | |
1267 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1268 | if appropriate (which it normally will be). */ | |
1269 | origflags = msec->flags; | |
1270 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1271 | msec->flags |= SEC_HAS_CONTENTS; | |
1272 | ||
1273 | fi = elf_tdata (abfd)->find_line_info; | |
1274 | if (fi == NULL) | |
1275 | { | |
1276 | bfd_size_type external_fdr_size; | |
1277 | char *fraw_src; | |
1278 | char *fraw_end; | |
1279 | struct fdr *fdr_ptr; | |
1280 | ||
1281 | fi = ((struct mips_elf_find_line *) | |
1282 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); | |
1283 | if (fi == NULL) | |
1284 | { | |
1285 | msec->flags = origflags; | |
1286 | return false; | |
1287 | } | |
1288 | ||
1289 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
1290 | { | |
1291 | msec->flags = origflags; | |
1292 | return false; | |
1293 | } | |
1294 | ||
1295 | /* Swap in the FDR information. */ | |
1296 | fi->d.fdr = ((struct fdr *) | |
1297 | bfd_alloc (abfd, | |
1298 | (fi->d.symbolic_header.ifdMax * | |
1299 | sizeof (struct fdr)))); | |
1300 | if (fi->d.fdr == NULL) | |
1301 | { | |
1302 | msec->flags = origflags; | |
1303 | return false; | |
1304 | } | |
1305 | external_fdr_size = swap->external_fdr_size; | |
1306 | fdr_ptr = fi->d.fdr; | |
1307 | fraw_src = (char *) fi->d.external_fdr; | |
1308 | fraw_end = (fraw_src | |
1309 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1310 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1311 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
1312 | ||
1313 | elf_tdata (abfd)->find_line_info = fi; | |
1314 | ||
1315 | /* Note that we don't bother to ever free this information. | |
1316 | find_nearest_line is either called all the time, as in | |
1317 | objdump -l, so the information should be saved, or it is | |
1318 | rarely called, as in ld error messages, so the memory | |
1319 | wasted is unimportant. Still, it would probably be a | |
1320 | good idea for free_cached_info to throw it away. */ | |
1321 | } | |
1322 | ||
1323 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
1324 | &fi->i, filename_ptr, functionname_ptr, | |
1325 | line_ptr)) | |
1326 | { | |
1327 | msec->flags = origflags; | |
1328 | return true; | |
1329 | } | |
1330 | ||
1331 | msec->flags = origflags; | |
1332 | } | |
1333 | ||
1334 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
1335 | ||
1336 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
1337 | filename_ptr, functionname_ptr, | |
1338 | line_ptr); | |
1339 | } | |
1340 | \f | |
1341 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
1342 | ||
1343 | struct extsym_info | |
1344 | { | |
1345 | bfd *abfd; | |
1346 | struct bfd_link_info *info; | |
1347 | struct ecoff_debug_info *debug; | |
1348 | const struct ecoff_debug_swap *swap; | |
1349 | boolean failed; | |
1350 | }; | |
1351 | ||
1352 | static boolean | |
1353 | elf64_alpha_output_extsym (h, data) | |
1354 | struct alpha_elf_link_hash_entry *h; | |
1355 | PTR data; | |
1356 | { | |
1357 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1358 | boolean strip; | |
1359 | asection *sec, *output_section; | |
1360 | ||
1361 | if (h->root.indx == -2) | |
1362 | strip = false; | |
1363 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1364 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
1365 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
1366 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
1367 | strip = true; | |
1368 | else if (einfo->info->strip == strip_all | |
1369 | || (einfo->info->strip == strip_some | |
1370 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1371 | h->root.root.root.string, | |
1372 | false, false) == NULL)) | |
1373 | strip = true; | |
1374 | else | |
1375 | strip = false; | |
1376 | ||
1377 | if (strip) | |
1378 | return true; | |
1379 | ||
1380 | if (h->esym.ifd == -2) | |
1381 | { | |
1382 | h->esym.jmptbl = 0; | |
1383 | h->esym.cobol_main = 0; | |
1384 | h->esym.weakext = 0; | |
1385 | h->esym.reserved = 0; | |
1386 | h->esym.ifd = ifdNil; | |
1387 | h->esym.asym.value = 0; | |
1388 | h->esym.asym.st = stGlobal; | |
1389 | ||
1390 | if (h->root.root.type != bfd_link_hash_defined | |
1391 | && h->root.root.type != bfd_link_hash_defweak) | |
1392 | h->esym.asym.sc = scAbs; | |
1393 | else | |
1394 | { | |
1395 | const char *name; | |
1396 | ||
1397 | sec = h->root.root.u.def.section; | |
1398 | output_section = sec->output_section; | |
1399 | ||
1400 | /* When making a shared library and symbol h is the one from | |
1401 | the another shared library, OUTPUT_SECTION may be null. */ | |
1402 | if (output_section == NULL) | |
1403 | h->esym.asym.sc = scUndefined; | |
1404 | else | |
1405 | { | |
1406 | name = bfd_section_name (output_section->owner, output_section); | |
ff12f303 | 1407 | |
297a4f1a ILT |
1408 | if (strcmp (name, ".text") == 0) |
1409 | h->esym.asym.sc = scText; | |
1410 | else if (strcmp (name, ".data") == 0) | |
1411 | h->esym.asym.sc = scData; | |
1412 | else if (strcmp (name, ".sdata") == 0) | |
1413 | h->esym.asym.sc = scSData; | |
1414 | else if (strcmp (name, ".rodata") == 0 | |
1415 | || strcmp (name, ".rdata") == 0) | |
1416 | h->esym.asym.sc = scRData; | |
1417 | else if (strcmp (name, ".bss") == 0) | |
1418 | h->esym.asym.sc = scBss; | |
1419 | else if (strcmp (name, ".sbss") == 0) | |
1420 | h->esym.asym.sc = scSBss; | |
1421 | else if (strcmp (name, ".init") == 0) | |
1422 | h->esym.asym.sc = scInit; | |
1423 | else if (strcmp (name, ".fini") == 0) | |
1424 | h->esym.asym.sc = scFini; | |
1425 | else | |
1426 | h->esym.asym.sc = scAbs; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | h->esym.asym.reserved = 0; | |
1431 | h->esym.asym.index = indexNil; | |
1432 | } | |
1433 | ||
1434 | if (h->root.root.type == bfd_link_hash_common) | |
1435 | h->esym.asym.value = h->root.root.u.c.size; | |
1436 | else if (h->root.root.type == bfd_link_hash_defined | |
1437 | || h->root.root.type == bfd_link_hash_defweak) | |
1438 | { | |
1439 | if (h->esym.asym.sc == scCommon) | |
1440 | h->esym.asym.sc = scBss; | |
1441 | else if (h->esym.asym.sc == scSCommon) | |
1442 | h->esym.asym.sc = scSBss; | |
1443 | ||
1444 | sec = h->root.root.u.def.section; | |
1445 | output_section = sec->output_section; | |
1446 | if (output_section != NULL) | |
1447 | h->esym.asym.value = (h->root.root.u.def.value | |
1448 | + sec->output_offset | |
1449 | + output_section->vma); | |
1450 | else | |
1451 | h->esym.asym.value = 0; | |
1452 | } | |
1453 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1454 | { | |
1455 | /* Set type and value for a symbol with a function stub. */ | |
1456 | h->esym.asym.st = stProc; | |
ff12f303 | 1457 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); |
297a4f1a | 1458 | if (sec == NULL) |
ff12f303 | 1459 | h->esym.asym.value = 0; |
297a4f1a | 1460 | else |
ff12f303 ILT |
1461 | { |
1462 | output_section = sec->output_section; | |
1463 | if (output_section != NULL) | |
1464 | h->esym.asym.value = (h->root.plt_offset | |
1465 | + sec->output_offset | |
1466 | + output_section->vma); | |
1467 | else | |
1468 | h->esym.asym.value = 0; | |
1469 | } | |
297a4f1a ILT |
1470 | #if 0 /* FIXME? */ |
1471 | h->esym.ifd = 0; | |
1472 | #endif | |
ff12f303 | 1473 | } |
297a4f1a ILT |
1474 | |
1475 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
1476 | h->root.root.root.string, | |
1477 | &h->esym)) | |
1478 | { | |
1479 | einfo->failed = true; | |
1480 | return false; | |
1481 | } | |
1482 | ||
1483 | return true; | |
1484 | } | |
1485 | ||
1486 | /* FIXME: Create a runtime procedure table from the .mdebug section. | |
1487 | ||
1488 | static boolean | |
1489 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
1490 | PTR handle; | |
1491 | bfd *abfd; | |
1492 | struct bfd_link_info *info; | |
1493 | asection *s; | |
1494 | struct ecoff_debug_info *debug; | |
ff12f303 | 1495 | */ |
297a4f1a | 1496 | \f |
ff12f303 ILT |
1497 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1498 | ||
297a4f1a ILT |
1499 | static boolean |
1500 | elf64_alpha_check_relocs (abfd, info, sec, relocs) | |
1501 | bfd *abfd; | |
1502 | struct bfd_link_info *info; | |
1503 | asection *sec; | |
1504 | const Elf_Internal_Rela *relocs; | |
1505 | { | |
1506 | bfd *dynobj; | |
297a4f1a | 1507 | asection *sreloc; |
ff12f303 | 1508 | const char *rel_sec_name; |
297a4f1a | 1509 | Elf_Internal_Shdr *symtab_hdr; |
ff12f303 ILT |
1510 | struct alpha_elf_link_hash_entry **sym_hashes; |
1511 | struct alpha_elf_got_entry **local_got_entries; | |
297a4f1a | 1512 | const Elf_Internal_Rela *rel, *relend; |
ff12f303 | 1513 | int got_created; |
297a4f1a ILT |
1514 | |
1515 | if (info->relocateable) | |
1516 | return true; | |
1517 | ||
297a4f1a | 1518 | dynobj = elf_hash_table(info)->dynobj; |
ff12f303 ILT |
1519 | if (dynobj == NULL) |
1520 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
1521 | ||
1522 | sreloc = NULL; | |
1523 | rel_sec_name = NULL; | |
1524 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1525 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
1526 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
1527 | got_created = 0; | |
297a4f1a ILT |
1528 | |
1529 | relend = relocs + sec->reloc_count; | |
1530 | for (rel = relocs; rel < relend; ++rel) | |
1531 | { | |
ff12f303 | 1532 | unsigned long r_symndx, r_type; |
37d7888d | 1533 | struct alpha_elf_link_hash_entry *h; |
297a4f1a | 1534 | |
37d7888d | 1535 | r_symndx = ELF64_R_SYM (rel->r_info); |
297a4f1a ILT |
1536 | if (r_symndx < symtab_hdr->sh_info) |
1537 | h = NULL; | |
1538 | else | |
ff12f303 ILT |
1539 | { |
1540 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1541 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; | |
1542 | } | |
1543 | r_type = ELF64_R_TYPE (rel->r_info); | |
297a4f1a | 1544 | |
ff12f303 | 1545 | switch (r_type) |
297a4f1a ILT |
1546 | { |
1547 | case R_ALPHA_LITERAL: | |
ff12f303 ILT |
1548 | { |
1549 | struct alpha_elf_got_entry *gotent; | |
1550 | int flags = 0; | |
297a4f1a | 1551 | |
ff12f303 ILT |
1552 | if (h) |
1553 | { | |
1554 | /* Search for and possibly create a got entry. */ | |
1555 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
1556 | if (gotent->gotobj == abfd && | |
1557 | gotent->addend == rel->r_addend) | |
1558 | break; | |
1559 | ||
1560 | if (!gotent) | |
1561 | { | |
1562 | gotent = ((struct alpha_elf_got_entry *) | |
1563 | bfd_alloc (abfd, | |
1564 | sizeof (struct alpha_elf_got_entry))); | |
1565 | if (!gotent) | |
1566 | return false; | |
297a4f1a | 1567 | |
ff12f303 ILT |
1568 | gotent->gotobj = abfd; |
1569 | gotent->addend = rel->r_addend; | |
1570 | gotent->got_offset = -1; | |
1571 | gotent->flags = 0; | |
297a4f1a | 1572 | |
ff12f303 ILT |
1573 | gotent->next = h->got_entries; |
1574 | h->got_entries = gotent; | |
37d7888d | 1575 | |
ff12f303 ILT |
1576 | alpha_elf_tdata (abfd)->total_got_entries++; |
1577 | } | |
1578 | } | |
1579 | else | |
1580 | { | |
1581 | /* This is a local .got entry -- record for merge. */ | |
1582 | if (!local_got_entries) | |
1583 | { | |
1584 | size_t size; | |
1585 | size = (symtab_hdr->sh_info | |
1586 | * sizeof (struct alpha_elf_got_entry *)); | |
1587 | ||
1588 | local_got_entries = ((struct alpha_elf_got_entry **) | |
1589 | bfd_alloc (abfd, size)); | |
1590 | if (!local_got_entries) | |
1591 | return false; | |
1592 | ||
1593 | memset (local_got_entries, 0, size); | |
1594 | alpha_elf_tdata (abfd)->local_got_entries = | |
1595 | local_got_entries; | |
1596 | } | |
1597 | ||
1598 | for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
1599 | gotent != NULL && gotent->addend != rel->r_addend; | |
1600 | gotent = gotent->next) | |
1601 | continue; | |
1602 | if (!gotent) | |
1603 | { | |
1604 | gotent = ((struct alpha_elf_got_entry *) | |
1605 | bfd_alloc (abfd, | |
1606 | sizeof (struct alpha_elf_got_entry))); | |
1607 | if (!gotent) | |
1608 | return false; | |
1609 | ||
1610 | gotent->gotobj = abfd; | |
1611 | gotent->addend = rel->r_addend; | |
1612 | gotent->got_offset = -1; | |
1613 | gotent->flags = 0; | |
1614 | ||
1615 | gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
1616 | local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent; | |
1617 | ||
1618 | alpha_elf_tdata(abfd)->total_got_entries++; | |
1619 | alpha_elf_tdata(abfd)->n_local_got_entries++; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | /* Remember how this literal is used from its LITUSEs. | |
1624 | This will be important when it comes to decide if we can | |
1625 | create a .plt entry for a function symbol. */ | |
1626 | if (rel+1 < relend | |
1627 | && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE) | |
1628 | { | |
1629 | do | |
1630 | { | |
1631 | ++rel; | |
1632 | if (rel->r_addend >= 1 && rel->r_addend <= 3) | |
1633 | flags |= 1 << rel->r_addend; | |
1634 | } | |
1635 | while (rel+1 < relend && | |
1636 | ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE); | |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | /* No LITUSEs -- presumably the address is not being | |
1641 | loaded for nothing. */ | |
1642 | flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1643 | } | |
1644 | ||
1645 | gotent->flags |= flags; | |
1646 | if (h) | |
1647 | { | |
1648 | /* Make a guess as to whether a .plt entry will be needed. */ | |
1649 | if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC) | |
1650 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1651 | else | |
1652 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1653 | } | |
1654 | } | |
1655 | /* FALLTHRU */ | |
1656 | ||
1657 | case R_ALPHA_GPDISP: | |
1658 | case R_ALPHA_GPREL32: | |
1659 | /* We don't actually use the .got here, but the sections must | |
1660 | be created before the linker maps input sections to output | |
1661 | sections. */ | |
1662 | if (!got_created) | |
297a4f1a | 1663 | { |
ff12f303 ILT |
1664 | if (!elf64_alpha_create_got_section (abfd, info)) |
1665 | return false; | |
1666 | ||
1667 | /* Make sure the object's gotobj is set to itself so | |
1668 | that we default to every object with its own .got. | |
1669 | We'll merge .gots later once we've collected each | |
1670 | object's info. */ | |
1671 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
1672 | ||
1673 | got_created = 1; | |
1674 | } | |
1675 | break; | |
1676 | ||
1677 | case R_ALPHA_SREL16: | |
1678 | case R_ALPHA_SREL32: | |
1679 | case R_ALPHA_SREL64: | |
1680 | if (h == NULL) | |
1681 | break; | |
1682 | /* FALLTHRU */ | |
1683 | ||
1684 | case R_ALPHA_REFLONG: | |
1685 | case R_ALPHA_REFQUAD: | |
1686 | if (rel_sec_name == NULL) | |
1687 | { | |
1688 | rel_sec_name = (bfd_elf_string_from_elf_section | |
1689 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1690 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1691 | if (rel_sec_name == NULL) | |
1692 | return false; | |
1693 | ||
1694 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1695 | && strcmp (bfd_get_section_name (abfd, sec), | |
1696 | rel_sec_name+5) == 0); | |
1697 | } | |
1698 | ||
1699 | /* We need to create the section here now whether we eventually | |
1700 | use it or not so that it gets mapped to an output section by | |
1701 | the linker. If not used, we'll kill it in | |
1702 | size_dynamic_sections. */ | |
1703 | if (sreloc == NULL) | |
1704 | { | |
1705 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
1706 | if (sreloc == NULL) | |
37d7888d | 1707 | { |
ff12f303 ILT |
1708 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
1709 | if (sreloc == NULL | |
1710 | || !bfd_set_section_flags (dynobj, sreloc, | |
1711 | (SEC_ALLOC|SEC_LOAD | |
1712 | | SEC_HAS_CONTENTS | |
1713 | | SEC_IN_MEMORY | |
1714 | | SEC_LINKER_CREATED | |
1715 | | SEC_READONLY)) | |
1716 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1717 | return false; | |
37d7888d | 1718 | } |
297a4f1a ILT |
1719 | } |
1720 | ||
ff12f303 | 1721 | if (h) |
297a4f1a | 1722 | { |
ff12f303 ILT |
1723 | /* Since we havn't seen all of the input symbols yet, we |
1724 | don't know whether we'll actually need a dynamic relocation | |
1725 | entry for this reloc. So make a record of it. Once we | |
1726 | find out if this thing needs dynamic relocation we'll | |
1727 | expand the relocation sections by the appropriate amount. */ | |
297a4f1a | 1728 | |
ff12f303 ILT |
1729 | struct alpha_elf_reloc_entry *rent; |
1730 | ||
1731 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
1732 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1733 | break; | |
1734 | ||
1735 | if (!rent) | |
1736 | { | |
1737 | rent = ((struct alpha_elf_reloc_entry *) | |
1738 | bfd_alloc (abfd, | |
1739 | sizeof (struct alpha_elf_reloc_entry))); | |
1740 | if (!rent) | |
1741 | return false; | |
1742 | ||
1743 | rent->srel = sreloc; | |
1744 | rent->rtype = r_type; | |
1745 | rent->count = 1; | |
297a4f1a | 1746 | |
ff12f303 ILT |
1747 | rent->next = h->reloc_entries; |
1748 | h->reloc_entries = rent; | |
1749 | } | |
1750 | else | |
1751 | rent->count++; | |
297a4f1a | 1752 | } |
ff12f303 ILT |
1753 | else if (info->shared) |
1754 | { | |
1755 | /* If this is a shared library, we need a RELATIVE reloc. */ | |
1756 | sreloc->_raw_size += sizeof (Elf64_External_Rela); | |
1757 | } | |
1758 | break; | |
1759 | } | |
1760 | } | |
1761 | ||
1762 | return true; | |
1763 | } | |
1764 | ||
1765 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1766 | regular object. The current definition is in some section of the | |
1767 | dynamic object, but we're not including those sections. We have to | |
1768 | change the definition to something the rest of the link can | |
1769 | understand. */ | |
1770 | ||
1771 | static boolean | |
1772 | elf64_alpha_adjust_dynamic_symbol (info, h) | |
1773 | struct bfd_link_info *info; | |
1774 | struct elf_link_hash_entry *h; | |
1775 | { | |
1776 | bfd *dynobj; | |
1777 | asection *s; | |
1778 | struct alpha_elf_link_hash_entry *ah; | |
1779 | ||
1780 | dynobj = elf_hash_table(info)->dynobj; | |
1781 | ah = (struct alpha_elf_link_hash_entry *)h; | |
1782 | ||
1783 | /* Now that we've seen all of the input symbols, finalize our decision | |
1784 | about whether this symbol should get a .plt entry. */ | |
1785 | ||
1786 | if (h->root.type != bfd_link_hash_undefweak | |
1787 | && alpha_elf_dynamic_symbol_p (h, info) | |
1788 | && (h->type == STT_FUNC | |
1789 | || (h->type == STT_NOTYPE | |
1790 | && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
1791 | /* Don't prevent otherwise valid programs from linking by attempting | |
1792 | to create a new .got entry somewhere. A Correct Solution would be | |
1793 | to add a new .got section to a new object file and let it be merged | |
1794 | somewhere later. But for now don't bother. */ | |
1795 | && ah->got_entries) | |
1796 | { | |
1797 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1798 | ||
1799 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
1800 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
1801 | return false; | |
1802 | ||
1803 | /* The first bit of the .plt is reserved. */ | |
1804 | if (s->_raw_size == 0) | |
1805 | s->_raw_size = PLT_HEADER_SIZE; | |
1806 | ||
1807 | h->plt_offset = s->_raw_size; | |
1808 | s->_raw_size += PLT_ENTRY_SIZE; | |
1809 | ||
1810 | /* If this symbol is not defined in a regular file, and we are not | |
1811 | generating a shared library, then set the symbol to the location | |
1812 | in the .plt. This is required to make function pointers compare | |
1813 | equal between the normal executable and the shared library. */ | |
1814 | if (!info->shared) | |
1815 | { | |
1816 | h->root.u.def.section = s; | |
1817 | h->root.u.def.value = h->plt_offset; | |
1818 | } | |
1819 | ||
1820 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
1821 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1822 | BFD_ASSERT (s != NULL); | |
1823 | s->_raw_size += sizeof (Elf64_External_Rela); | |
1824 | ||
1825 | return true; | |
1826 | } | |
1827 | else | |
1828 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1829 | ||
1830 | /* If this is a weak symbol, and there is a real definition, the | |
1831 | processor independent code will have arranged for us to see the | |
1832 | real definition first, and we can just use the same value. */ | |
1833 | if (h->weakdef != NULL) | |
1834 | { | |
1835 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1836 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1837 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1838 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1839 | return true; | |
1840 | } | |
1841 | ||
1842 | /* This is a reference to a symbol defined by a dynamic object which | |
1843 | is not a function. The Alpha, since it uses .got entries for all | |
1844 | symbols even in regular objects, does not need the hackery of a | |
1845 | .dynbss section and COPY dynamic relocations. */ | |
1846 | ||
1847 | return true; | |
1848 | } | |
1849 | ||
1850 | /* Is it possible to merge two object file's .got tables? */ | |
1851 | ||
1852 | static boolean | |
1853 | elf64_alpha_can_merge_gots (a, b) | |
1854 | bfd *a, *b; | |
1855 | { | |
1856 | int total = alpha_elf_tdata (a)->total_got_entries; | |
1857 | ||
1858 | /* Trivial quick fallout test. */ | |
1859 | if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES) | |
1860 | return true; | |
1861 | ||
1862 | /* By their nature, local .got entries cannot be merged. */ | |
1863 | if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES) | |
1864 | return false; | |
1865 | ||
1866 | /* Failing the common trivial comparison, we must effectively | |
1867 | perform the merge. Not actually performing the merge means that | |
1868 | we don't have to store undo information in case we fail. */ | |
1869 | { | |
1870 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b); | |
1871 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr; | |
1872 | int i, n; | |
1873 | ||
1874 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; | |
1875 | for (i = 0; i < n; ++i) | |
1876 | { | |
1877 | struct alpha_elf_got_entry *ae, *be; | |
1878 | for (be = hashes[i]->got_entries; be ; be = be->next) | |
1879 | { | |
1880 | if (be->gotobj != b) | |
1881 | continue; | |
1882 | ||
1883 | for (ae = hashes[i]->got_entries; ae ; ae = ae->next) | |
1884 | if (ae->gotobj == a && ae->addend == be->addend) | |
1885 | goto global_found; | |
1886 | ||
1887 | if (++total > MAX_GOT_ENTRIES) | |
1888 | return false; | |
1889 | global_found:; | |
1890 | } | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | return true; | |
1895 | } | |
1896 | ||
1897 | /* Actually merge two .got tables. */ | |
1898 | ||
1899 | static void | |
1900 | elf64_alpha_merge_gots (a, b) | |
1901 | bfd *a, *b; | |
1902 | { | |
1903 | int total = alpha_elf_tdata(a)->total_got_entries; | |
1904 | ||
1905 | /* Remember local expansion. */ | |
1906 | { | |
1907 | int e = alpha_elf_tdata(b)->n_local_got_entries; | |
1908 | total += e; | |
1909 | alpha_elf_tdata(a)->n_local_got_entries += e; | |
1910 | } | |
1911 | ||
1912 | /* Let the local .got entries know they are part of a new subsegment. */ | |
1913 | { | |
1914 | struct alpha_elf_got_entry **local_got_entries; | |
1915 | local_got_entries = alpha_elf_tdata(b)->local_got_entries; | |
1916 | if (local_got_entries) | |
1917 | { | |
1918 | int i, n; | |
1919 | ||
1920 | n = elf_tdata(b)->symtab_hdr.sh_info; | |
1921 | for (i = 0; i < n; ++i) | |
1922 | { | |
1923 | struct alpha_elf_got_entry *gotent; | |
1924 | for (gotent = local_got_entries[i]; gotent; gotent = gotent->next) | |
1925 | gotent->gotobj = a; | |
1926 | } | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | /* Merge the global .got entries. */ | |
1931 | { | |
1932 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b); | |
1933 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr; | |
1934 | int i, n; | |
1935 | ||
1936 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; | |
1937 | for (i = 0; i < n; ++i) | |
1938 | { | |
1939 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
1940 | start = &hashes[i]->got_entries; | |
1941 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) | |
1942 | { | |
1943 | if (be->gotobj != b) | |
1944 | continue; | |
297a4f1a | 1945 | |
ff12f303 ILT |
1946 | for (ae = *start; ae ; ae = ae->next) |
1947 | if (ae->gotobj == a && ae->addend == be->addend) | |
297a4f1a | 1948 | { |
ff12f303 ILT |
1949 | *pbe = be->next; |
1950 | goto global_found; | |
297a4f1a | 1951 | } |
ff12f303 ILT |
1952 | be->gotobj = a; |
1953 | total += 1; | |
297a4f1a | 1954 | |
ff12f303 ILT |
1955 | global_found:; |
1956 | } | |
1957 | } | |
1958 | } | |
297a4f1a | 1959 | |
ff12f303 ILT |
1960 | alpha_elf_tdata(a)->total_got_entries = total; |
1961 | alpha_elf_tdata(b)->gotobj = a; | |
1962 | } | |
297a4f1a | 1963 | |
ff12f303 | 1964 | /* Calculate the offsets for the got entries. */ |
297a4f1a | 1965 | |
ff12f303 ILT |
1966 | static boolean |
1967 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) | |
1968 | struct alpha_elf_link_hash_entry *h; | |
1969 | PTR arg; | |
1970 | { | |
1971 | struct alpha_elf_got_entry *gotent; | |
297a4f1a | 1972 | |
ff12f303 ILT |
1973 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
1974 | { | |
1975 | bfd_size_type *plge = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; | |
1976 | gotent->got_offset = *plge; | |
1977 | *plge += 8; | |
1978 | } | |
297a4f1a | 1979 | |
ff12f303 ILT |
1980 | return true; |
1981 | } | |
297a4f1a | 1982 | |
ff12f303 ILT |
1983 | static void |
1984 | elf64_alpha_calc_got_offsets (info) | |
1985 | struct bfd_link_info *info; | |
1986 | { | |
1987 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
297a4f1a | 1988 | |
ff12f303 ILT |
1989 | /* First, zero out the .got sizes, as we may be recalculating the |
1990 | .got after optimizing it. */ | |
1991 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
1992 | alpha_elf_tdata(i)->got->_raw_size = 0; | |
297a4f1a | 1993 | |
ff12f303 ILT |
1994 | /* Next, fill in the offsets for all the global entries. */ |
1995 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
1996 | elf64_alpha_calc_got_offsets_for_symbol, | |
1997 | NULL); | |
297a4f1a | 1998 | |
ff12f303 ILT |
1999 | /* Finally, fill in the offsets for the local entries. */ |
2000 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2001 | { | |
2002 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; | |
2003 | bfd *j; | |
297a4f1a | 2004 | |
ff12f303 ILT |
2005 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2006 | { | |
2007 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2008 | int k, n; | |
297a4f1a | 2009 | |
ff12f303 ILT |
2010 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2011 | if (!local_got_entries) | |
2012 | continue; | |
2013 | ||
2014 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
2015 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2016 | { | |
2017 | gotent->got_offset = got_offset; | |
2018 | got_offset += 8; | |
2019 | } | |
297a4f1a | 2020 | } |
ff12f303 ILT |
2021 | |
2022 | alpha_elf_tdata(i)->got->_raw_size = got_offset; | |
297a4f1a | 2023 | } |
ff12f303 | 2024 | } |
297a4f1a | 2025 | |
ff12f303 ILT |
2026 | /* Remove a section from the output BFD. */ |
2027 | ||
2028 | static void | |
2029 | elf64_alpha_strip_section_from_output (s) | |
2030 | asection *s; | |
2031 | { | |
2032 | asection **spp; | |
2033 | ||
2034 | for (spp = &s->output_section->owner->sections; | |
2035 | *spp != s->output_section; | |
2036 | spp = &(*spp)->next) | |
2037 | continue; | |
2038 | *spp = s->output_section->next; | |
2039 | --s->output_section->owner->section_count; | |
297a4f1a ILT |
2040 | } |
2041 | ||
ff12f303 | 2042 | /* Constructs the gots. */ |
297a4f1a ILT |
2043 | |
2044 | static boolean | |
ff12f303 ILT |
2045 | elf64_alpha_always_size_sections (output_bfd, info) |
2046 | bfd *output_bfd; | |
297a4f1a | 2047 | struct bfd_link_info *info; |
297a4f1a | 2048 | { |
ff12f303 ILT |
2049 | bfd *i, *got_list, *cur_got_obj, **cur_got_tail; |
2050 | int ngots; | |
297a4f1a | 2051 | |
ff12f303 ILT |
2052 | if (info->relocateable) |
2053 | return true; | |
297a4f1a | 2054 | |
ff12f303 ILT |
2055 | ngots = 0; |
2056 | got_list = NULL; | |
2057 | cur_got_obj = NULL; | |
2058 | cur_got_tail = NULL; | |
2059 | for (i = info->input_bfds; i ; i = i->link_next) | |
297a4f1a | 2060 | { |
ff12f303 ILT |
2061 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2062 | ||
2063 | /* Don't play if there is no .got for this input file. */ | |
2064 | if (this_got == NULL) | |
2065 | continue; | |
2066 | ||
2067 | if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES) | |
297a4f1a | 2068 | { |
ff12f303 ILT |
2069 | /* Yikes! A single object file has too many entries. */ |
2070 | (*_bfd_error_handler) | |
2071 | ("%s: .got subsegment exceeds 64K (size %d)", | |
2072 | bfd_get_filename(i), | |
2073 | alpha_elf_tdata(this_got)->total_got_entries * 8); | |
2074 | return false; | |
297a4f1a ILT |
2075 | } |
2076 | ||
ff12f303 ILT |
2077 | if (cur_got_obj) |
2078 | { | |
2079 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
2080 | { | |
2081 | elf64_alpha_merge_gots (cur_got_obj, i); | |
2082 | *cur_got_tail = i; | |
2083 | } | |
2084 | else | |
2085 | { | |
2086 | if (++ngots == 2) | |
2087 | { | |
2088 | (*info->callbacks->warning) | |
2089 | (info, "using multiple gp values", (char *) NULL, | |
2090 | output_bfd, (asection *) NULL, (bfd_vma) 0); | |
2091 | } | |
2092 | *cur_got_tail = NULL; | |
2093 | alpha_elf_tdata(cur_got_obj)->got_link_next = got_list; | |
2094 | got_list = cur_got_obj; | |
2095 | cur_got_obj = i; | |
2096 | } | |
2097 | } | |
2098 | else | |
2099 | { | |
2100 | ++ngots; | |
2101 | cur_got_obj = i; | |
2102 | } | |
2103 | cur_got_tail = &alpha_elf_tdata(i)->in_got_link_next; | |
2104 | } | |
297a4f1a | 2105 | |
ff12f303 ILT |
2106 | if (cur_got_obj) |
2107 | alpha_elf_tdata (cur_got_obj)->got_link_next = got_list; | |
2108 | alpha_elf_hash_table (info)->got_list = got_list = cur_got_obj; | |
297a4f1a | 2109 | |
ff12f303 ILT |
2110 | /* Once the gots have been merged, fill in the got offsets for everything |
2111 | therein. */ | |
2112 | elf64_alpha_calc_got_offsets (info); | |
297a4f1a | 2113 | |
ff12f303 ILT |
2114 | /* Allocate space for all of the .got subsections. */ |
2115 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2116 | { | |
2117 | asection *s = alpha_elf_tdata(i)->got; | |
2118 | if (s->_raw_size > 0) | |
297a4f1a | 2119 | { |
ff12f303 ILT |
2120 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); |
2121 | if (s->contents == NULL) | |
2122 | return false; | |
297a4f1a | 2123 | } |
ff12f303 | 2124 | } |
297a4f1a | 2125 | |
ff12f303 ILT |
2126 | return true; |
2127 | } | |
297a4f1a | 2128 | |
ff12f303 | 2129 | /* Work out the sizes of the dynamic relocation entries. */ |
297a4f1a | 2130 | |
ff12f303 ILT |
2131 | static boolean |
2132 | elf64_alpha_calc_dynrel_sizes (h, info) | |
2133 | struct alpha_elf_link_hash_entry *h; | |
2134 | struct bfd_link_info *info; | |
2135 | { | |
2136 | /* If the symbol was defined as a common symbol in a regular object | |
2137 | file, and there was no definition in any dynamic object, then the | |
2138 | linker will have allocated space for the symbol in a common | |
2139 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2140 | set. This is done for dynamic symbols in | |
2141 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2142 | symbols, somehow. */ | |
2143 | if (((h->root.elf_link_hash_flags | |
2144 | & (ELF_LINK_HASH_DEF_REGULAR | |
2145 | | ELF_LINK_HASH_REF_REGULAR | |
2146 | | ELF_LINK_HASH_DEF_DYNAMIC)) | |
2147 | == ELF_LINK_HASH_REF_REGULAR) | |
2148 | && (h->root.root.type == bfd_link_hash_defined | |
2149 | || h->root.root.type == bfd_link_hash_defweak) | |
2150 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2151 | { | |
2152 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
297a4f1a ILT |
2153 | } |
2154 | ||
ff12f303 ILT |
2155 | /* If the symbol is dynamic, we'll need all the relocations in their |
2156 | natural form. */ | |
2157 | if (alpha_elf_dynamic_symbol_p (&h->root, info)) | |
297a4f1a | 2158 | { |
ff12f303 ILT |
2159 | struct alpha_elf_reloc_entry *relent; |
2160 | ||
2161 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
2162 | { | |
2163 | relent->srel->_raw_size += | |
2164 | sizeof (Elf64_External_Rela) * relent->count; | |
2165 | } | |
2166 | ||
2167 | /* Only add a .rela.got entry if we're not using a .plt entry. */ | |
2168 | if (h->root.plt_offset == MINUS_ONE) | |
2169 | { | |
2170 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2171 | struct alpha_elf_got_entry *gotent; | |
2172 | bfd_size_type count = 0; | |
2173 | asection *srel; | |
2174 | ||
2175 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2176 | count++; | |
2177 | if (count > 0) | |
2178 | { | |
2179 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2180 | BFD_ASSERT (srel != NULL); | |
2181 | srel->_raw_size += sizeof (Elf64_External_Rela) * count; | |
2182 | } | |
2183 | } | |
297a4f1a | 2184 | } |
ff12f303 ILT |
2185 | /* Otherwise, shared objects require RELATIVE relocs for all REFQUAD |
2186 | and REFLONG relocations. */ | |
2187 | else if (info->shared) | |
2188 | { | |
2189 | struct alpha_elf_reloc_entry *relent; | |
297a4f1a | 2190 | |
ff12f303 ILT |
2191 | for (relent = h->reloc_entries; relent; relent = relent->next) |
2192 | if (relent->rtype == R_ALPHA_REFLONG | |
2193 | || relent->rtype == R_ALPHA_REFQUAD) | |
2194 | { | |
2195 | relent->srel->_raw_size += | |
2196 | sizeof(Elf64_External_Rela) * relent->count; | |
2197 | } | |
2198 | } | |
297a4f1a ILT |
2199 | |
2200 | return true; | |
2201 | } | |
2202 | ||
2203 | /* Set the sizes of the dynamic sections. */ | |
2204 | ||
2205 | static boolean | |
2206 | elf64_alpha_size_dynamic_sections (output_bfd, info) | |
2207 | bfd *output_bfd; | |
2208 | struct bfd_link_info *info; | |
2209 | { | |
2210 | bfd *dynobj; | |
2211 | asection *s; | |
2212 | boolean reltext; | |
2213 | boolean relplt; | |
2214 | ||
2215 | dynobj = elf_hash_table(info)->dynobj; | |
2216 | BFD_ASSERT(dynobj != NULL); | |
2217 | ||
ff12f303 | 2218 | if (elf_hash_table (info)->dynamic_sections_created) |
297a4f1a ILT |
2219 | { |
2220 | /* Set the contents of the .interp section to the interpreter. */ | |
2221 | if (!info->shared) | |
2222 | { | |
ff12f303 ILT |
2223 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2224 | BFD_ASSERT (s != NULL); | |
297a4f1a | 2225 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
ff12f303 ILT |
2226 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2227 | } | |
2228 | ||
2229 | /* Now that we've seen all of the input files, we can decide which | |
2230 | symbols need dynamic relocation entries and which don't. We've | |
2231 | collected information in check_relocs that we can now apply to | |
2232 | size the dynamic relocation sections. */ | |
2233 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2234 | elf64_alpha_calc_dynrel_sizes, | |
2235 | info); | |
2236 | ||
2237 | /* When building shared libraries, each local .got entry needs a | |
2238 | RELATIVE reloc. */ | |
2239 | if (info->shared) | |
2240 | { | |
2241 | bfd *i; | |
2242 | asection *srel; | |
2243 | bfd_size_type count; | |
2244 | ||
2245 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2246 | BFD_ASSERT (srel != NULL); | |
2247 | ||
2248 | for (i = alpha_elf_hash_table(info)->got_list, count = 0; | |
2249 | i != NULL; | |
2250 | i = alpha_elf_tdata(i)->got_link_next) | |
2251 | count += alpha_elf_tdata(i)->n_local_got_entries; | |
2252 | ||
2253 | srel->_raw_size += count * sizeof(Elf64_External_Rela); | |
297a4f1a ILT |
2254 | } |
2255 | } | |
ff12f303 | 2256 | /* else we're not dynamic and by definition we don't need such things. */ |
297a4f1a ILT |
2257 | |
2258 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2259 | determined the sizes of the various dynamic sections. Allocate | |
2260 | memory for them. */ | |
2261 | reltext = false; | |
2262 | relplt = false; | |
2263 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2264 | { | |
2265 | const char *name; | |
2266 | boolean strip; | |
2267 | ||
ff12f303 | 2268 | if (!(s->flags & SEC_LINKER_CREATED)) |
297a4f1a ILT |
2269 | continue; |
2270 | ||
2271 | /* It's OK to base decisions on the section name, because none | |
2272 | of the dynobj section names depend upon the input files. */ | |
ff12f303 | 2273 | name = bfd_get_section_name (dynobj, s); |
297a4f1a ILT |
2274 | |
2275 | /* If we don't need this section, strip it from the output file. | |
2276 | This is to handle .rela.bss and .rela.plt. We must create it | |
2277 | in create_dynamic_sections, because it must be created before | |
2278 | the linker maps input sections to output sections. The | |
2279 | linker does that before adjust_dynamic_symbol is called, and | |
2280 | it is that function which decides whether anything needs to | |
2281 | go into these sections. */ | |
2282 | ||
2283 | strip = false; | |
2284 | ||
ff12f303 | 2285 | if (strncmp (name, ".rela", 5) == 0) |
297a4f1a ILT |
2286 | { |
2287 | strip = (s->_raw_size == 0); | |
2288 | ||
2289 | if (!strip) | |
2290 | { | |
303e7257 | 2291 | const char *outname; |
297a4f1a ILT |
2292 | asection *target; |
2293 | ||
2294 | /* If this relocation section applies to a read only | |
2295 | section, then we probably need a DT_TEXTREL entry. */ | |
303e7257 ILT |
2296 | outname = bfd_get_section_name (output_bfd, |
2297 | s->output_section); | |
2298 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
297a4f1a ILT |
2299 | if (target != NULL |
2300 | && (target->flags & SEC_READONLY) != 0) | |
2301 | reltext = true; | |
2302 | ||
2303 | if (strcmp(name, ".rela.plt") == 0) | |
2304 | relplt = true; | |
2305 | ||
2306 | /* We use the reloc_count field as a counter if we need | |
2307 | to copy relocs into the output file. */ | |
2308 | s->reloc_count = 0; | |
2309 | } | |
2310 | } | |
297a4f1a ILT |
2311 | else if (strcmp (name, ".plt") != 0) |
2312 | { | |
ff12f303 | 2313 | /* It's not one of our dynamic sections, so don't allocate space. */ |
297a4f1a ILT |
2314 | continue; |
2315 | } | |
2316 | ||
2317 | if (strip) | |
ff12f303 ILT |
2318 | elf64_alpha_strip_section_from_output (s); |
2319 | else | |
297a4f1a | 2320 | { |
ff12f303 ILT |
2321 | /* Allocate memory for the section contents. */ |
2322 | s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size); | |
2323 | if (s->contents == NULL && s->_raw_size != 0) | |
2324 | return false; | |
2325 | } | |
2326 | } | |
297a4f1a | 2327 | |
ff12f303 ILT |
2328 | /* If we are generating a shared library, we generate a section |
2329 | symbol for each output section. These are local symbols, which | |
2330 | means that they must come first in the dynamic symbol table. | |
2331 | That means we must increment the dynamic symbol index of every | |
2332 | other dynamic symbol. */ | |
2333 | if (info->shared) | |
2334 | { | |
2335 | long c[2], i; | |
2336 | asection *p; | |
297a4f1a | 2337 | |
ff12f303 ILT |
2338 | c[0] = 0; |
2339 | c[1] = bfd_count_sections (output_bfd); | |
297a4f1a | 2340 | |
ff12f303 ILT |
2341 | elf_hash_table (info)->dynsymcount += c[1]; |
2342 | elf_link_hash_traverse (elf_hash_table(info), | |
2343 | elf64_alpha_adjust_dynindx, | |
2344 | (PTR) c); | |
2345 | ||
2346 | for (i = 1, p = output_bfd->sections; | |
2347 | p != NULL; | |
2348 | p = p->next, i++) | |
2349 | { | |
2350 | elf_section_data (p)->dynindx = i; | |
2351 | /* These symbols will have no names, so we don't need to | |
2352 | fiddle with dynstr_index. */ | |
2353 | } | |
297a4f1a ILT |
2354 | } |
2355 | ||
2356 | if (elf_hash_table (info)->dynamic_sections_created) | |
2357 | { | |
2358 | /* Add some entries to the .dynamic section. We fill in the | |
2359 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2360 | must add the entries now so that we get the correct size for | |
2361 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2362 | dynamic linker and used by the debugger. */ | |
2363 | if (!info->shared) | |
2364 | { | |
2365 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2366 | return false; | |
2367 | } | |
2368 | ||
2369 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
2370 | return false; | |
2371 | ||
2372 | if (relplt) | |
2373 | { | |
2374 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2375 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2376 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2377 | return false; | |
2378 | } | |
2379 | ||
2380 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) | |
2381 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) | |
2382 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, | |
2383 | sizeof(Elf64_External_Rela))) | |
2384 | return false; | |
2385 | ||
2386 | if (reltext) | |
2387 | { | |
2388 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2389 | return false; | |
2390 | } | |
2391 | } | |
2392 | ||
2393 | return true; | |
2394 | } | |
2395 | ||
2396 | /* Increment the index of a dynamic symbol by a given amount. Called | |
2397 | via elf_link_hash_traverse. */ | |
2398 | ||
2399 | static boolean | |
2400 | elf64_alpha_adjust_dynindx (h, cparg) | |
2401 | struct elf_link_hash_entry *h; | |
2402 | PTR cparg; | |
2403 | { | |
2404 | long *cp = (long *)cparg; | |
2405 | ||
2406 | if (h->dynindx >= cp[0]) | |
2407 | h->dynindx += cp[1]; | |
2408 | ||
2409 | return true; | |
2410 | } | |
2411 | ||
2412 | /* Relocate an Alpha ELF section. */ | |
2413 | ||
2414 | static boolean | |
2415 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, | |
2416 | contents, relocs, local_syms, local_sections) | |
2417 | bfd *output_bfd; | |
2418 | struct bfd_link_info *info; | |
2419 | bfd *input_bfd; | |
2420 | asection *input_section; | |
2421 | bfd_byte *contents; | |
2422 | Elf_Internal_Rela *relocs; | |
2423 | Elf_Internal_Sym *local_syms; | |
2424 | asection **local_sections; | |
2425 | { | |
2426 | Elf_Internal_Shdr *symtab_hdr; | |
2427 | Elf_Internal_Rela *rel; | |
2428 | Elf_Internal_Rela *relend; | |
ff12f303 ILT |
2429 | asection *sec, *sgot, *srel, *srelgot; |
2430 | bfd *dynobj, *gotobj; | |
297a4f1a ILT |
2431 | bfd_vma gp; |
2432 | ||
ff12f303 ILT |
2433 | srelgot = srel = NULL; |
2434 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2435 | dynobj = elf_hash_table (info)->dynobj; | |
2436 | if (dynobj) | |
2437 | { | |
2438 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2439 | } | |
297a4f1a ILT |
2440 | |
2441 | /* Find the gp value for this input bfd. */ | |
2442 | sgot = NULL; | |
2443 | gp = 0; | |
ff12f303 ILT |
2444 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; |
2445 | if (gotobj) | |
297a4f1a | 2446 | { |
ff12f303 ILT |
2447 | sgot = alpha_elf_tdata (gotobj)->got; |
2448 | gp = _bfd_get_gp_value (gotobj); | |
297a4f1a ILT |
2449 | if (gp == 0) |
2450 | { | |
2451 | gp = (sgot->output_section->vma | |
2452 | + sgot->output_offset | |
2453 | + 0x8000); | |
ff12f303 | 2454 | _bfd_set_gp_value (gotobj, gp); |
297a4f1a ILT |
2455 | } |
2456 | } | |
2457 | ||
2458 | rel = relocs; | |
2459 | relend = relocs + input_section->reloc_count; | |
2460 | for (; rel < relend; rel++) | |
2461 | { | |
2462 | int r_type; | |
2463 | reloc_howto_type *howto; | |
2464 | unsigned long r_symndx; | |
ff12f303 | 2465 | struct alpha_elf_link_hash_entry *h; |
297a4f1a ILT |
2466 | Elf_Internal_Sym *sym; |
2467 | bfd_vma relocation; | |
2468 | bfd_vma addend; | |
2469 | bfd_reloc_status_type r; | |
2470 | ||
2471 | r_type = ELF64_R_TYPE(rel->r_info); | |
2472 | if (r_type < 0 || r_type >= (int) R_ALPHA_max) | |
2473 | { | |
2474 | bfd_set_error (bfd_error_bad_value); | |
2475 | return false; | |
2476 | } | |
2477 | howto = elf64_alpha_howto_table + r_type; | |
2478 | ||
2479 | r_symndx = ELF64_R_SYM(rel->r_info); | |
2480 | ||
2481 | if (info->relocateable) | |
2482 | { | |
2483 | /* This is a relocateable link. We don't have to change | |
2484 | anything, unless the reloc is against a section symbol, | |
2485 | in which case we have to adjust according to where the | |
2486 | section symbol winds up in the output section. */ | |
2487 | if (r_symndx < symtab_hdr->sh_info) | |
2488 | { | |
2489 | sym = local_syms + r_symndx; | |
2490 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
2491 | { | |
2492 | sec = local_sections[r_symndx]; | |
2493 | rel->r_addend += sec->output_offset + sym->st_value; | |
2494 | } | |
2495 | } | |
2496 | ||
2497 | continue; | |
2498 | } | |
2499 | ||
2500 | /* This is a final link. */ | |
2501 | ||
2502 | h = NULL; | |
2503 | sym = NULL; | |
2504 | sec = NULL; | |
2505 | ||
2506 | if (r_symndx < symtab_hdr->sh_info) | |
2507 | { | |
2508 | sym = local_syms + r_symndx; | |
2509 | sec = local_sections[r_symndx]; | |
2510 | relocation = (sec->output_section->vma | |
2511 | + sec->output_offset | |
2512 | + sym->st_value); | |
2513 | } | |
2514 | else | |
2515 | { | |
ff12f303 | 2516 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; |
297a4f1a | 2517 | |
ff12f303 ILT |
2518 | while (h->root.root.type == bfd_link_hash_indirect |
2519 | || h->root.root.type == bfd_link_hash_warning) | |
2520 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
297a4f1a | 2521 | |
ff12f303 ILT |
2522 | if (h->root.root.type == bfd_link_hash_defined |
2523 | || h->root.root.type == bfd_link_hash_defweak) | |
297a4f1a | 2524 | { |
ff12f303 | 2525 | sec = h->root.root.u.def.section; |
297a4f1a ILT |
2526 | |
2527 | #if rth_notdef | |
2528 | if ((r_type == R_ALPHA_LITERAL | |
2529 | && elf_hash_table(info)->dynamic_sections_created | |
2530 | && (!info->shared | |
2531 | || !info->symbolic | |
ff12f303 | 2532 | || !(h->root.elf_link_hash_flags |
297a4f1a ILT |
2533 | & ELF_LINK_HASH_DEF_REGULAR))) |
2534 | || (info->shared | |
2535 | && (!info->symbolic | |
ff12f303 | 2536 | || !(h->root.elf_link_hash_flags |
297a4f1a ILT |
2537 | & ELF_LINK_HASH_DEF_REGULAR)) |
2538 | && (input_section->flags & SEC_ALLOC) | |
2539 | && (r_type == R_ALPHA_REFLONG | |
2540 | || r_type == R_ALPHA_REFQUAD | |
2541 | || r_type == R_ALPHA_LITERAL))) | |
2542 | { | |
2543 | /* In these cases, we don't need the relocation value. | |
2544 | We check specially because in some obscure cases | |
2545 | sec->output_section will be NULL. */ | |
2546 | relocation = 0; | |
2547 | } | |
2548 | #else | |
2549 | /* FIXME: Are not these obscure cases simply bugs? Let's | |
2550 | get something working and come back to this. */ | |
2551 | if (sec->output_section == NULL) | |
2552 | relocation = 0; | |
2553 | #endif /* rth_notdef */ | |
2554 | else | |
2555 | { | |
ff12f303 | 2556 | relocation = (h->root.root.u.def.value |
297a4f1a ILT |
2557 | + sec->output_section->vma |
2558 | + sec->output_offset); | |
2559 | } | |
2560 | } | |
ff12f303 | 2561 | else if (h->root.root.type == bfd_link_hash_undefweak) |
297a4f1a ILT |
2562 | relocation = 0; |
2563 | else if (info->shared && !info->symbolic) | |
2564 | relocation = 0; | |
2565 | else | |
2566 | { | |
2567 | if (!((*info->callbacks->undefined_symbol) | |
ff12f303 | 2568 | (info, h->root.root.root.string, input_bfd, |
297a4f1a ILT |
2569 | input_section, rel->r_offset))) |
2570 | return false; | |
2571 | relocation = 0; | |
2572 | } | |
2573 | } | |
2574 | addend = rel->r_addend; | |
2575 | ||
2576 | switch (r_type) | |
2577 | { | |
2578 | case R_ALPHA_GPDISP: | |
2579 | { | |
2580 | bfd_byte *p_ldah, *p_lda; | |
2581 | ||
ff12f303 ILT |
2582 | BFD_ASSERT(gp != 0); |
2583 | ||
297a4f1a ILT |
2584 | relocation = (input_section->output_section->vma |
2585 | + input_section->output_offset | |
2586 | + rel->r_offset); | |
2587 | ||
2588 | p_ldah = contents + rel->r_offset - input_section->vma; | |
2589 | p_lda = p_ldah + rel->r_addend; | |
2590 | ||
2591 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation, | |
2592 | p_ldah, p_lda); | |
2593 | } | |
2594 | break; | |
2595 | ||
2596 | case R_ALPHA_OP_PUSH: | |
2597 | case R_ALPHA_OP_STORE: | |
2598 | case R_ALPHA_OP_PSUB: | |
2599 | case R_ALPHA_OP_PRSHIFT: | |
ff12f303 | 2600 | /* We hate these silly beasts. */ |
297a4f1a ILT |
2601 | abort(); |
2602 | ||
2603 | case R_ALPHA_LITERAL: | |
2604 | { | |
ff12f303 | 2605 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 2606 | |
297a4f1a | 2607 | BFD_ASSERT(sgot != NULL); |
ff12f303 ILT |
2608 | BFD_ASSERT(gp != 0); |
2609 | ||
297a4f1a ILT |
2610 | if (h != NULL) |
2611 | { | |
ff12f303 ILT |
2612 | gotent = h->got_entries; |
2613 | while (gotent->gotobj != gotobj || gotent->addend != addend) | |
2614 | gotent = gotent->next; | |
297a4f1a | 2615 | |
ff12f303 ILT |
2616 | /* Initialize the .got entry's value. */ |
2617 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) | |
2618 | { | |
2619 | bfd_put_64 (output_bfd, relocation+addend, | |
2620 | sgot->contents + gotent->got_offset); | |
297a4f1a | 2621 | |
ff12f303 ILT |
2622 | /* The dynamic relocations for the .got entries are |
2623 | done in finish_dynamic_symbol. */ | |
297a4f1a | 2624 | |
ff12f303 ILT |
2625 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; |
2626 | } | |
2627 | } | |
2628 | else | |
2629 | { | |
2630 | gotent = (alpha_elf_tdata(input_bfd)-> | |
2631 | local_got_entries[r_symndx]); | |
2632 | while (gotent->addend != addend) | |
2633 | gotent = gotent->next; | |
2634 | ||
2635 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) | |
2636 | { | |
2637 | bfd_put_64 (output_bfd, relocation+addend, | |
2638 | sgot->contents + gotent->got_offset); | |
2639 | ||
2640 | /* Local got entries need RELATIVE relocs in shared | |
2641 | libraries. */ | |
2642 | if (info->shared) | |
2643 | { | |
2644 | Elf_Internal_Rela outrel; | |
2645 | ||
2646 | BFD_ASSERT(srelgot != NULL); | |
2647 | ||
2648 | outrel.r_offset = (sgot->output_section->vma | |
2649 | + sgot->output_offset | |
2650 | + gotent->got_offset); | |
2651 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
2652 | outrel.r_addend = 0; | |
2653 | ||
2654 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2655 | ((Elf64_External_Rela *) | |
2656 | srelgot->contents) | |
2657 | + srelgot->reloc_count++); | |
2658 | } | |
2659 | ||
2660 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; | |
2661 | } | |
297a4f1a | 2662 | } |
297a4f1a ILT |
2663 | |
2664 | /* Figure the gprel relocation. */ | |
2665 | addend = 0; | |
2666 | relocation = (sgot->output_section->vma | |
2667 | + sgot->output_offset | |
ff12f303 | 2668 | + gotent->got_offset); |
297a4f1a ILT |
2669 | relocation -= gp; |
2670 | } | |
2671 | /* overflow handled by _bfd_final_link_relocate */ | |
2672 | goto default_reloc; | |
ff12f303 | 2673 | |
297a4f1a ILT |
2674 | case R_ALPHA_GPREL32: |
2675 | BFD_ASSERT(gp != 0); | |
2676 | relocation -= gp; | |
2677 | goto default_reloc; | |
2678 | ||
2679 | case R_ALPHA_BRADDR: | |
2680 | case R_ALPHA_HINT: | |
2681 | /* The regular PC-relative stuff measures from the start of | |
2682 | the instruction rather than the end. */ | |
2683 | addend -= 4; | |
2684 | goto default_reloc; | |
ff12f303 | 2685 | |
297a4f1a ILT |
2686 | case R_ALPHA_REFLONG: |
2687 | case R_ALPHA_REFQUAD: | |
ff12f303 ILT |
2688 | { |
2689 | Elf_Internal_Rela outrel; | |
297a4f1a | 2690 | |
ff12f303 ILT |
2691 | /* Careful here to remember RELATIVE relocations for global |
2692 | variables for symbolic shared objects. */ | |
2693 | ||
2694 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) | |
2695 | { | |
2696 | BFD_ASSERT(h->root.dynindx != -1); | |
2697 | outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type); | |
2698 | outrel.r_addend = addend; | |
2699 | addend = 0, relocation = 0; | |
2700 | } | |
2701 | else if (info->shared) | |
2702 | { | |
2703 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
2704 | outrel.r_addend = 0; | |
2705 | } | |
2706 | else | |
2707 | goto default_reloc; | |
2708 | ||
2709 | if (!srel) | |
2710 | { | |
2711 | const char *name; | |
2712 | ||
2713 | name = (bfd_elf_string_from_elf_section | |
2714 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
2715 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
2716 | BFD_ASSERT(name != NULL); | |
2717 | ||
2718 | srel = bfd_get_section_by_name (dynobj, name); | |
2719 | BFD_ASSERT(srel != NULL); | |
2720 | } | |
2721 | ||
2722 | outrel.r_offset = (input_section->output_section->vma | |
2723 | + input_section->output_offset | |
2724 | + rel->r_offset); | |
2725 | ||
2726 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2727 | ((Elf64_External_Rela *) | |
2728 | srel->contents) | |
2729 | + srel->reloc_count++); | |
2730 | } | |
297a4f1a ILT |
2731 | goto default_reloc; |
2732 | ||
2733 | default: | |
2734 | default_reloc: | |
2735 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2736 | contents, rel->r_offset, relocation, | |
2737 | addend); | |
2738 | break; | |
2739 | } | |
2740 | ||
2741 | switch (r) | |
2742 | { | |
2743 | case bfd_reloc_ok: | |
2744 | break; | |
2745 | ||
2746 | case bfd_reloc_overflow: | |
2747 | { | |
2748 | const char *name; | |
2749 | ||
2750 | if (h != NULL) | |
ff12f303 | 2751 | name = h->root.root.root.string; |
297a4f1a ILT |
2752 | else |
2753 | { | |
2754 | name = (bfd_elf_string_from_elf_section | |
2755 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
2756 | if (name == NULL) | |
2757 | return false; | |
2758 | if (*name == '\0') | |
2759 | name = bfd_section_name (input_bfd, sec); | |
2760 | } | |
2761 | if (! ((*info->callbacks->reloc_overflow) | |
2762 | (info, name, howto->name, (bfd_vma) 0, | |
2763 | input_bfd, input_section, rel->r_offset))) | |
2764 | return false; | |
2765 | } | |
2766 | break; | |
2767 | ||
2768 | default: | |
2769 | case bfd_reloc_outofrange: | |
2770 | abort (); | |
2771 | } | |
2772 | } | |
2773 | ||
2774 | return true; | |
2775 | } | |
2776 | ||
2777 | /* Finish up dynamic symbol handling. We set the contents of various | |
2778 | dynamic sections here. */ | |
2779 | ||
2780 | static boolean | |
2781 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2782 | bfd *output_bfd; | |
2783 | struct bfd_link_info *info; | |
2784 | struct elf_link_hash_entry *h; | |
2785 | Elf_Internal_Sym *sym; | |
2786 | { | |
2787 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2788 | ||
2789 | if (h->plt_offset != MINUS_ONE) | |
2790 | { | |
ff12f303 | 2791 | /* Fill in the .plt entry for this symbol. */ |
297a4f1a ILT |
2792 | asection *splt, *sgot, *srel; |
2793 | Elf_Internal_Rela outrel; | |
2794 | bfd_vma got_addr, plt_addr; | |
2795 | bfd_vma plt_index; | |
ff12f303 | 2796 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 2797 | |
ff12f303 | 2798 | BFD_ASSERT (h->dynindx != -1); |
297a4f1a | 2799 | |
ff12f303 ILT |
2800 | /* The first .got entry will be updated by the .plt with the |
2801 | address of the target function. */ | |
2802 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
2803 | BFD_ASSERT (gotent && gotent->addend == 0); | |
297a4f1a | 2804 | |
ff12f303 ILT |
2805 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
2806 | BFD_ASSERT (splt != NULL); | |
2807 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2808 | BFD_ASSERT (srel != NULL); | |
2809 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
2810 | BFD_ASSERT (sgot != NULL); | |
297a4f1a ILT |
2811 | |
2812 | got_addr = (sgot->output_section->vma | |
ff12f303 ILT |
2813 | + sgot->output_offset |
2814 | + gotent->got_offset); | |
297a4f1a ILT |
2815 | plt_addr = (splt->output_section->vma |
2816 | + splt->output_offset | |
2817 | + h->plt_offset); | |
2818 | ||
2819 | plt_index = (h->plt_offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
2820 | ||
2821 | /* Fill in the entry in the procedure linkage table. */ | |
2822 | { | |
2823 | unsigned insn1, insn2, insn3; | |
2824 | long hi, lo; | |
2825 | ||
2826 | /* decompose the reloc offset for the plt for ldah+lda */ | |
2827 | hi = plt_index * sizeof(Elf64_External_Rela); | |
2828 | lo = ((hi & 0xffff) ^ 0x8000) - 0x8000; | |
2829 | hi = (hi - lo) >> 16; | |
2830 | ||
2831 | insn1 = PLT_ENTRY_WORD1 | (hi & 0xffff); | |
2832 | insn2 = PLT_ENTRY_WORD2 | (lo & 0xffff); | |
2833 | insn3 = PLT_ENTRY_WORD3 | ((-(h->plt_offset + 12) >> 2) & 0x1fffff); | |
ff12f303 | 2834 | |
297a4f1a ILT |
2835 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt_offset); |
2836 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt_offset + 4); | |
2837 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt_offset + 8); | |
2838 | } | |
2839 | ||
2840 | /* Fill in the entry in the .rela.plt section. */ | |
2841 | outrel.r_offset = got_addr; | |
2842 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
2843 | outrel.r_addend = 0; | |
2844 | ||
2845 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2846 | ((Elf64_External_Rela *)srel->contents | |
2847 | + plt_index)); | |
2848 | ||
2849 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
2850 | { | |
2851 | /* Mark the symbol as undefined, rather than as defined in the | |
2852 | .plt section. Leave the value alone. */ | |
2853 | sym->st_shndx = SHN_UNDEF; | |
2854 | } | |
2855 | ||
ff12f303 ILT |
2856 | /* Fill in the entries in the .got. */ |
2857 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
2858 | ||
2859 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
2860 | while ((gotent = gotent->next) != NULL) | |
2861 | { | |
2862 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
2863 | BFD_ASSERT(sgot != NULL); | |
2864 | BFD_ASSERT(gotent->addend == 0); | |
2865 | ||
2866 | bfd_put_64 (output_bfd, plt_addr, | |
2867 | sgot->contents + gotent->got_offset); | |
2868 | } | |
297a4f1a | 2869 | } |
ff12f303 | 2870 | else if (alpha_elf_dynamic_symbol_p (h, info)) |
297a4f1a | 2871 | { |
ff12f303 ILT |
2872 | /* Fill in the dynamic relocations for this symbol's .got entries. */ |
2873 | asection *srel; | |
297a4f1a | 2874 | Elf_Internal_Rela outrel; |
ff12f303 | 2875 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 2876 | |
297a4f1a ILT |
2877 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
2878 | BFD_ASSERT (srel != NULL); | |
2879 | ||
ff12f303 ILT |
2880 | outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT); |
2881 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
2882 | gotent != NULL; | |
2883 | gotent = gotent->next) | |
297a4f1a | 2884 | { |
ff12f303 ILT |
2885 | asection *sgot = alpha_elf_tdata (gotent->gotobj)->got; |
2886 | outrel.r_offset = (sgot->output_section->vma | |
2887 | + sgot->output_offset | |
2888 | + gotent->got_offset); | |
2889 | outrel.r_addend = gotent->addend; | |
2890 | ||
2891 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
2892 | ((Elf64_External_Rela *)srel->contents | |
2893 | + srel->reloc_count++)); | |
297a4f1a | 2894 | } |
297a4f1a ILT |
2895 | } |
2896 | ||
2897 | /* Mark some specially defined symbols as absolute. */ | |
2898 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2899 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2900 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2901 | sym->st_shndx = SHN_ABS; | |
2902 | ||
2903 | return true; | |
2904 | } | |
2905 | ||
2906 | /* Finish up the dynamic sections. */ | |
2907 | ||
2908 | static boolean | |
2909 | elf64_alpha_finish_dynamic_sections (output_bfd, info) | |
2910 | bfd *output_bfd; | |
2911 | struct bfd_link_info *info; | |
2912 | { | |
2913 | bfd *dynobj; | |
2914 | asection *sdyn; | |
297a4f1a ILT |
2915 | |
2916 | dynobj = elf_hash_table (info)->dynobj; | |
2917 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2918 | ||
2919 | if (elf_hash_table (info)->dynamic_sections_created) | |
2920 | { | |
2921 | asection *splt; | |
2922 | Elf64_External_Dyn *dyncon, *dynconend; | |
2923 | ||
2924 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2925 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2926 | ||
2927 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
2928 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2929 | for (; dyncon < dynconend; dyncon++) | |
2930 | { | |
2931 | Elf_Internal_Dyn dyn; | |
2932 | const char *name; | |
2933 | asection *s; | |
2934 | ||
2935 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2936 | ||
2937 | switch (dyn.d_tag) | |
2938 | { | |
2939 | case DT_PLTGOT: | |
2940 | name = ".plt"; | |
2941 | goto get_vma; | |
2942 | case DT_PLTRELSZ: | |
2943 | name = ".rela.plt"; | |
2944 | goto get_size; | |
2945 | case DT_JMPREL: | |
2946 | name = ".rela.plt"; | |
2947 | goto get_vma; | |
2948 | ||
2949 | case DT_RELASZ: | |
2950 | /* My interpretation of the TIS v1.1 ELF document indicates | |
2951 | that RELASZ should not include JMPREL. This is not what | |
ff12f303 ILT |
2952 | the rest of the BFD does. It is, however, what the |
2953 | glibc ld.so wants. Do this fixup here until we found | |
297a4f1a ILT |
2954 | out who is right. */ |
2955 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2956 | if (s) | |
2957 | { | |
2958 | dyn.d_un.d_val -= | |
2959 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
2960 | } | |
2961 | break; | |
2962 | ||
2963 | get_vma: | |
2964 | s = bfd_get_section_by_name (output_bfd, name); | |
2965 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
2966 | break; | |
2967 | ||
2968 | get_size: | |
2969 | s = bfd_get_section_by_name (output_bfd, name); | |
2970 | dyn.d_un.d_val = | |
2971 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
2972 | break; | |
2973 | } | |
2974 | ||
2975 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2976 | } | |
2977 | ||
2978 | /* Initialize the PLT0 entry */ | |
2979 | if (splt->_raw_size > 0) | |
2980 | { | |
2981 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
2982 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
2983 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
2984 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
ff12f303 | 2985 | |
297a4f1a ILT |
2986 | /* The next two words will be filled in by ld.so */ |
2987 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
2988 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
2989 | ||
ff12f303 | 2990 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
297a4f1a ILT |
2991 | PLT_HEADER_SIZE; |
2992 | } | |
2993 | } | |
2994 | ||
297a4f1a ILT |
2995 | if (info->shared) |
2996 | { | |
2997 | asection *sdynsym; | |
2998 | asection *s; | |
2999 | Elf_Internal_Sym sym; | |
3000 | ||
3001 | /* Set up the section symbols for the output sections. */ | |
3002 | ||
3003 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
3004 | BFD_ASSERT (sdynsym != NULL); | |
3005 | ||
3006 | sym.st_size = 0; | |
3007 | sym.st_name = 0; | |
3008 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
3009 | sym.st_other = 0; | |
3010 | ||
3011 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3012 | { | |
3013 | int indx; | |
3014 | ||
3015 | sym.st_value = s->vma; | |
3016 | ||
3017 | indx = elf_section_data (s)->this_idx; | |
3018 | BFD_ASSERT (indx > 0); | |
3019 | sym.st_shndx = indx; | |
3020 | ||
3021 | bfd_elf64_swap_symbol_out (output_bfd, &sym, | |
3022 | (PTR) (((Elf64_External_Sym *) | |
3023 | sdynsym->contents) | |
3024 | + elf_section_data (s)->dynindx)); | |
3025 | } | |
3026 | ||
3027 | /* Set the sh_info field of the output .dynsym section to the | |
3028 | index of the first global symbol. */ | |
3029 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
3030 | bfd_count_sections (output_bfd) + 1; | |
3031 | } | |
3032 | ||
3033 | return true; | |
3034 | } | |
3035 | ||
3036 | /* We need to use a special link routine to handle the .reginfo and | |
3037 | the .mdebug sections. We need to merge all instances of these | |
3038 | sections together, not write them all out sequentially. */ | |
3039 | ||
3040 | static boolean | |
3041 | elf64_alpha_final_link (abfd, info) | |
3042 | bfd *abfd; | |
3043 | struct bfd_link_info *info; | |
3044 | { | |
3045 | asection *o; | |
3046 | struct bfd_link_order *p; | |
3047 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
3048 | struct ecoff_debug_info debug; | |
3049 | const struct ecoff_debug_swap *swap | |
3050 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3051 | HDRR *symhdr = &debug.symbolic_header; | |
3052 | PTR mdebug_handle = NULL; | |
3053 | ||
3054 | /* Go through the sections and collect the .reginfo and .mdebug | |
3055 | information. */ | |
3056 | reginfo_sec = NULL; | |
3057 | mdebug_sec = NULL; | |
3058 | gptab_data_sec = NULL; | |
3059 | gptab_bss_sec = NULL; | |
3060 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3061 | { | |
3062 | #ifdef ERIC_neverdef | |
3063 | if (strcmp (o->name, ".reginfo") == 0) | |
3064 | { | |
3065 | memset (®info, 0, sizeof reginfo); | |
3066 | ||
3067 | /* We have found the .reginfo section in the output file. | |
3068 | Look through all the link_orders comprising it and merge | |
3069 | the information together. */ | |
3070 | for (p = o->link_order_head; | |
3071 | p != (struct bfd_link_order *) NULL; | |
3072 | p = p->next) | |
3073 | { | |
3074 | asection *input_section; | |
3075 | bfd *input_bfd; | |
3076 | Elf64_External_RegInfo ext; | |
3077 | Elf64_RegInfo sub; | |
3078 | ||
3079 | if (p->type != bfd_indirect_link_order) | |
3080 | { | |
3081 | if (p->type == bfd_fill_link_order) | |
3082 | continue; | |
3083 | abort (); | |
3084 | } | |
3085 | ||
3086 | input_section = p->u.indirect.section; | |
3087 | input_bfd = input_section->owner; | |
3088 | ||
3089 | /* The linker emulation code has probably clobbered the | |
3090 | size to be zero bytes. */ | |
3091 | if (input_section->_raw_size == 0) | |
3092 | input_section->_raw_size = sizeof (Elf64_External_RegInfo); | |
3093 | ||
3094 | if (! bfd_get_section_contents (input_bfd, input_section, | |
3095 | (PTR) &ext, | |
3096 | (file_ptr) 0, | |
3097 | sizeof ext)) | |
3098 | return false; | |
3099 | ||
3100 | bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub); | |
3101 | ||
3102 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
3103 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
3104 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
3105 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
3106 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
3107 | ||
3108 | /* ri_gp_value is set by the function | |
3109 | alpha_elf_section_processing when the section is | |
3110 | finally written out. */ | |
3111 | ||
3112 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3113 | elf_link_input_bfd ignores this section. */ | |
3114 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
3115 | } | |
3116 | ||
3117 | /* Force the section size to the value we want. */ | |
3118 | o->_raw_size = sizeof (Elf64_External_RegInfo); | |
3119 | ||
3120 | /* Skip this section later on (I don't think this currently | |
3121 | matters, but someday it might). */ | |
3122 | o->link_order_head = (struct bfd_link_order *) NULL; | |
3123 | ||
3124 | reginfo_sec = o; | |
3125 | } | |
3126 | #endif | |
3127 | ||
3128 | if (strcmp (o->name, ".mdebug") == 0) | |
3129 | { | |
3130 | struct extsym_info einfo; | |
3131 | ||
3132 | /* We have found the .mdebug section in the output file. | |
3133 | Look through all the link_orders comprising it and merge | |
3134 | the information together. */ | |
3135 | symhdr->magic = swap->sym_magic; | |
3136 | /* FIXME: What should the version stamp be? */ | |
3137 | symhdr->vstamp = 0; | |
3138 | symhdr->ilineMax = 0; | |
3139 | symhdr->cbLine = 0; | |
3140 | symhdr->idnMax = 0; | |
3141 | symhdr->ipdMax = 0; | |
3142 | symhdr->isymMax = 0; | |
3143 | symhdr->ioptMax = 0; | |
3144 | symhdr->iauxMax = 0; | |
3145 | symhdr->issMax = 0; | |
3146 | symhdr->issExtMax = 0; | |
3147 | symhdr->ifdMax = 0; | |
3148 | symhdr->crfd = 0; | |
3149 | symhdr->iextMax = 0; | |
3150 | ||
3151 | /* We accumulate the debugging information itself in the | |
3152 | debug_info structure. */ | |
3153 | debug.line = NULL; | |
3154 | debug.external_dnr = NULL; | |
3155 | debug.external_pdr = NULL; | |
3156 | debug.external_sym = NULL; | |
3157 | debug.external_opt = NULL; | |
3158 | debug.external_aux = NULL; | |
3159 | debug.ss = NULL; | |
3160 | debug.ssext = debug.ssext_end = NULL; | |
3161 | debug.external_fdr = NULL; | |
3162 | debug.external_rfd = NULL; | |
3163 | debug.external_ext = debug.external_ext_end = NULL; | |
3164 | ||
3165 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
3166 | if (mdebug_handle == (PTR) NULL) | |
3167 | return false; | |
3168 | ||
3169 | if (1) | |
3170 | { | |
3171 | asection *s; | |
3172 | EXTR esym; | |
3173 | bfd_vma last; | |
3174 | unsigned int i; | |
3175 | static const char * const name[] = | |
3176 | { | |
3177 | ".text", ".init", ".fini", ".data", | |
3178 | ".rodata", ".sdata", ".sbss", ".bss" | |
3179 | }; | |
3180 | static const int sc[] = { scText, scInit, scFini, scData, | |
3181 | scRData, scSData, scSBss, scBss }; | |
3182 | ||
3183 | esym.jmptbl = 0; | |
3184 | esym.cobol_main = 0; | |
3185 | esym.weakext = 0; | |
3186 | esym.reserved = 0; | |
3187 | esym.ifd = ifdNil; | |
3188 | esym.asym.iss = issNil; | |
3189 | esym.asym.st = stLocal; | |
3190 | esym.asym.reserved = 0; | |
3191 | esym.asym.index = indexNil; | |
3192 | for (i = 0; i < 8; i++) | |
3193 | { | |
3194 | esym.asym.sc = sc[i]; | |
3195 | s = bfd_get_section_by_name (abfd, name[i]); | |
3196 | if (s != NULL) | |
3197 | { | |
3198 | esym.asym.value = s->vma; | |
3199 | last = s->vma + s->_raw_size; | |
3200 | } | |
3201 | else | |
3202 | esym.asym.value = last; | |
ff12f303 | 3203 | |
297a4f1a ILT |
3204 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, |
3205 | name[i], &esym)) | |
3206 | return false; | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | for (p = o->link_order_head; | |
3211 | p != (struct bfd_link_order *) NULL; | |
3212 | p = p->next) | |
3213 | { | |
3214 | asection *input_section; | |
3215 | bfd *input_bfd; | |
3216 | const struct ecoff_debug_swap *input_swap; | |
3217 | struct ecoff_debug_info input_debug; | |
3218 | char *eraw_src; | |
3219 | char *eraw_end; | |
3220 | ||
3221 | if (p->type != bfd_indirect_link_order) | |
3222 | { | |
3223 | if (p->type == bfd_fill_link_order) | |
3224 | continue; | |
3225 | abort (); | |
3226 | } | |
3227 | ||
3228 | input_section = p->u.indirect.section; | |
3229 | input_bfd = input_section->owner; | |
3230 | ||
3231 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
3232 | || (get_elf_backend_data (input_bfd) | |
3233 | ->elf_backend_ecoff_debug_swap) == NULL) | |
3234 | { | |
3235 | /* I don't know what a non ALPHA ELF bfd would be | |
3236 | doing with a .mdebug section, but I don't really | |
3237 | want to deal with it. */ | |
3238 | continue; | |
3239 | } | |
3240 | ||
3241 | input_swap = (get_elf_backend_data (input_bfd) | |
3242 | ->elf_backend_ecoff_debug_swap); | |
3243 | ||
3244 | BFD_ASSERT (p->size == input_section->_raw_size); | |
3245 | ||
3246 | /* The ECOFF linking code expects that we have already | |
3247 | read in the debugging information and set up an | |
3248 | ecoff_debug_info structure, so we do that now. */ | |
3249 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
3250 | &input_debug)) | |
3251 | return false; | |
3252 | ||
3253 | if (! (bfd_ecoff_debug_accumulate | |
3254 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
3255 | &input_debug, input_swap, info))) | |
3256 | return false; | |
3257 | ||
3258 | /* Loop through the external symbols. For each one with | |
3259 | interesting information, try to find the symbol in | |
3260 | the linker global hash table and save the information | |
3261 | for the output external symbols. */ | |
3262 | eraw_src = input_debug.external_ext; | |
3263 | eraw_end = (eraw_src | |
3264 | + (input_debug.symbolic_header.iextMax | |
3265 | * input_swap->external_ext_size)); | |
3266 | for (; | |
3267 | eraw_src < eraw_end; | |
3268 | eraw_src += input_swap->external_ext_size) | |
3269 | { | |
3270 | EXTR ext; | |
3271 | const char *name; | |
3272 | struct alpha_elf_link_hash_entry *h; | |
3273 | ||
3274 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
3275 | if (ext.asym.sc == scNil | |
3276 | || ext.asym.sc == scUndefined | |
3277 | || ext.asym.sc == scSUndefined) | |
3278 | continue; | |
3279 | ||
3280 | name = input_debug.ssext + ext.asym.iss; | |
3281 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
3282 | name, false, false, true); | |
3283 | if (h == NULL || h->esym.ifd != -2) | |
3284 | continue; | |
3285 | ||
3286 | if (ext.ifd != -1) | |
3287 | { | |
3288 | BFD_ASSERT (ext.ifd | |
3289 | < input_debug.symbolic_header.ifdMax); | |
3290 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
3291 | } | |
3292 | ||
3293 | h->esym = ext; | |
3294 | } | |
3295 | ||
3296 | /* Free up the information we just read. */ | |
3297 | free (input_debug.line); | |
3298 | free (input_debug.external_dnr); | |
3299 | free (input_debug.external_pdr); | |
3300 | free (input_debug.external_sym); | |
3301 | free (input_debug.external_opt); | |
3302 | free (input_debug.external_aux); | |
3303 | free (input_debug.ss); | |
3304 | free (input_debug.ssext); | |
3305 | free (input_debug.external_fdr); | |
3306 | free (input_debug.external_rfd); | |
3307 | free (input_debug.external_ext); | |
3308 | ||
3309 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3310 | elf_link_input_bfd ignores this section. */ | |
3311 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
3312 | } | |
3313 | ||
3314 | #ifdef ERIC_neverdef | |
3315 | if (info->shared) | |
3316 | { | |
3317 | /* Create .rtproc section. */ | |
3318 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
3319 | if (rtproc_sec == NULL) | |
3320 | { | |
ff12f303 ILT |
3321 | flagword flags = (SEC_HAS_CONTENTS |
3322 | | SEC_IN_MEMORY | |
3323 | | SEC_LINKER_CREATED | |
297a4f1a ILT |
3324 | | SEC_READONLY); |
3325 | ||
3326 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
3327 | if (rtproc_sec == NULL | |
3328 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
3329 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 12)) | |
3330 | return false; | |
3331 | } | |
3332 | ||
3333 | if (! alpha_elf_create_procedure_table (mdebug_handle, abfd, | |
3334 | info, rtproc_sec, &debug)) | |
3335 | return false; | |
3336 | } | |
3337 | #endif | |
3338 | ||
3339 | ||
3340 | /* Build the external symbol information. */ | |
3341 | einfo.abfd = abfd; | |
3342 | einfo.info = info; | |
3343 | einfo.debug = &debug; | |
3344 | einfo.swap = swap; | |
3345 | einfo.failed = false; | |
3346 | elf_link_hash_traverse (elf_hash_table (info), | |
3347 | elf64_alpha_output_extsym, | |
3348 | (PTR) &einfo); | |
3349 | if (einfo.failed) | |
3350 | return false; | |
3351 | ||
3352 | /* Set the size of the .mdebug section. */ | |
3353 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
3354 | ||
3355 | /* Skip this section later on (I don't think this currently | |
3356 | matters, but someday it might). */ | |
3357 | o->link_order_head = (struct bfd_link_order *) NULL; | |
3358 | ||
3359 | mdebug_sec = o; | |
3360 | } | |
3361 | ||
3362 | #ifdef ERIC_neverdef | |
3363 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
3364 | { | |
3365 | const char *subname; | |
3366 | unsigned int c; | |
3367 | Elf64_gptab *tab; | |
3368 | Elf64_External_gptab *ext_tab; | |
3369 | unsigned int i; | |
3370 | ||
3371 | /* The .gptab.sdata and .gptab.sbss sections hold | |
3372 | information describing how the small data area would | |
3373 | change depending upon the -G switch. These sections | |
3374 | not used in executables files. */ | |
3375 | if (! info->relocateable) | |
3376 | { | |
3377 | asection **secpp; | |
3378 | ||
3379 | for (p = o->link_order_head; | |
3380 | p != (struct bfd_link_order *) NULL; | |
3381 | p = p->next) | |
3382 | { | |
3383 | asection *input_section; | |
3384 | ||
3385 | if (p->type != bfd_indirect_link_order) | |
3386 | { | |
3387 | if (p->type == bfd_fill_link_order) | |
3388 | continue; | |
3389 | abort (); | |
3390 | } | |
3391 | ||
3392 | input_section = p->u.indirect.section; | |
3393 | ||
3394 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3395 | elf_link_input_bfd ignores this section. */ | |
3396 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
3397 | } | |
3398 | ||
3399 | /* Skip this section later on (I don't think this | |
3400 | currently matters, but someday it might). */ | |
3401 | o->link_order_head = (struct bfd_link_order *) NULL; | |
3402 | ||
3403 | /* Really remove the section. */ | |
3404 | for (secpp = &abfd->sections; | |
3405 | *secpp != o; | |
3406 | secpp = &(*secpp)->next) | |
3407 | ; | |
3408 | *secpp = (*secpp)->next; | |
3409 | --abfd->section_count; | |
3410 | ||
3411 | continue; | |
3412 | } | |
3413 | ||
3414 | /* There is one gptab for initialized data, and one for | |
3415 | uninitialized data. */ | |
3416 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
3417 | gptab_data_sec = o; | |
3418 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
3419 | gptab_bss_sec = o; | |
3420 | else | |
3421 | { | |
3422 | (*_bfd_error_handler) | |
3423 | ("%s: illegal section name `%s'", | |
3424 | bfd_get_filename (abfd), o->name); | |
3425 | bfd_set_error (bfd_error_nonrepresentable_section); | |
3426 | return false; | |
3427 | } | |
3428 | ||
3429 | /* The linker script always combines .gptab.data and | |
3430 | .gptab.sdata into .gptab.sdata, and likewise for | |
3431 | .gptab.bss and .gptab.sbss. It is possible that there is | |
3432 | no .sdata or .sbss section in the output file, in which | |
3433 | case we must change the name of the output section. */ | |
3434 | subname = o->name + sizeof ".gptab" - 1; | |
3435 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
3436 | { | |
3437 | if (o == gptab_data_sec) | |
3438 | o->name = ".gptab.data"; | |
3439 | else | |
3440 | o->name = ".gptab.bss"; | |
3441 | subname = o->name + sizeof ".gptab" - 1; | |
3442 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
3443 | } | |
3444 | ||
3445 | /* Set up the first entry. */ | |
3446 | c = 1; | |
3447 | tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab)); | |
3448 | if (tab == NULL) | |
3449 | return false; | |
3450 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
3451 | tab[0].gt_header.gt_unused = 0; | |
3452 | ||
3453 | /* Combine the input sections. */ | |
3454 | for (p = o->link_order_head; | |
3455 | p != (struct bfd_link_order *) NULL; | |
3456 | p = p->next) | |
3457 | { | |
3458 | asection *input_section; | |
3459 | bfd *input_bfd; | |
3460 | bfd_size_type size; | |
3461 | unsigned long last; | |
3462 | bfd_size_type gpentry; | |
3463 | ||
3464 | if (p->type != bfd_indirect_link_order) | |
3465 | { | |
3466 | if (p->type == bfd_fill_link_order) | |
3467 | continue; | |
3468 | abort (); | |
3469 | } | |
3470 | ||
3471 | input_section = p->u.indirect.section; | |
3472 | input_bfd = input_section->owner; | |
3473 | ||
3474 | /* Combine the gptab entries for this input section one | |
3475 | by one. We know that the input gptab entries are | |
3476 | sorted by ascending -G value. */ | |
3477 | size = bfd_section_size (input_bfd, input_section); | |
3478 | last = 0; | |
3479 | for (gpentry = sizeof (Elf64_External_gptab); | |
3480 | gpentry < size; | |
3481 | gpentry += sizeof (Elf64_External_gptab)) | |
3482 | { | |
3483 | Elf64_External_gptab ext_gptab; | |
3484 | Elf64_gptab int_gptab; | |
3485 | unsigned long val; | |
3486 | unsigned long add; | |
3487 | boolean exact; | |
3488 | unsigned int look; | |
3489 | ||
3490 | if (! (bfd_get_section_contents | |
3491 | (input_bfd, input_section, (PTR) &ext_gptab, | |
3492 | gpentry, sizeof (Elf64_External_gptab)))) | |
3493 | { | |
3494 | free (tab); | |
3495 | return false; | |
3496 | } | |
3497 | ||
3498 | bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab, | |
3499 | &int_gptab); | |
3500 | val = int_gptab.gt_entry.gt_g_value; | |
3501 | add = int_gptab.gt_entry.gt_bytes - last; | |
3502 | ||
3503 | exact = false; | |
3504 | for (look = 1; look < c; look++) | |
3505 | { | |
3506 | if (tab[look].gt_entry.gt_g_value >= val) | |
3507 | tab[look].gt_entry.gt_bytes += add; | |
3508 | ||
3509 | if (tab[look].gt_entry.gt_g_value == val) | |
3510 | exact = true; | |
3511 | } | |
3512 | ||
3513 | if (! exact) | |
3514 | { | |
3515 | Elf64_gptab *new_tab; | |
3516 | unsigned int max; | |
3517 | ||
3518 | /* We need a new table entry. */ | |
3519 | new_tab = ((Elf64_gptab *) | |
3520 | bfd_realloc ((PTR) tab, | |
3521 | (c + 1) * sizeof (Elf64_gptab))); | |
3522 | if (new_tab == NULL) | |
3523 | { | |
3524 | free (tab); | |
3525 | return false; | |
3526 | } | |
3527 | tab = new_tab; | |
3528 | tab[c].gt_entry.gt_g_value = val; | |
3529 | tab[c].gt_entry.gt_bytes = add; | |
3530 | ||
3531 | /* Merge in the size for the next smallest -G | |
3532 | value, since that will be implied by this new | |
3533 | value. */ | |
3534 | max = 0; | |
3535 | for (look = 1; look < c; look++) | |
3536 | { | |
3537 | if (tab[look].gt_entry.gt_g_value < val | |
3538 | && (max == 0 | |
3539 | || (tab[look].gt_entry.gt_g_value | |
3540 | > tab[max].gt_entry.gt_g_value))) | |
3541 | max = look; | |
3542 | } | |
3543 | if (max != 0) | |
3544 | tab[c].gt_entry.gt_bytes += | |
3545 | tab[max].gt_entry.gt_bytes; | |
3546 | ||
3547 | ++c; | |
3548 | } | |
3549 | ||
3550 | last = int_gptab.gt_entry.gt_bytes; | |
3551 | } | |
3552 | ||
3553 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
3554 | elf_link_input_bfd ignores this section. */ | |
3555 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
3556 | } | |
3557 | ||
3558 | /* The table must be sorted by -G value. */ | |
3559 | if (c > 2) | |
3560 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
3561 | ||
3562 | /* Swap out the table. */ | |
3563 | ext_tab = ((Elf64_External_gptab *) | |
3564 | bfd_alloc (abfd, c * sizeof (Elf64_External_gptab))); | |
3565 | if (ext_tab == NULL) | |
3566 | { | |
3567 | free (tab); | |
3568 | return false; | |
3569 | } | |
3570 | ||
3571 | for (i = 0; i < c; i++) | |
3572 | bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
3573 | free (tab); | |
3574 | ||
3575 | o->_raw_size = c * sizeof (Elf64_External_gptab); | |
3576 | o->contents = (bfd_byte *) ext_tab; | |
3577 | ||
3578 | /* Skip this section later on (I don't think this currently | |
3579 | matters, but someday it might). */ | |
3580 | o->link_order_head = (struct bfd_link_order *) NULL; | |
3581 | } | |
3582 | #endif | |
3583 | ||
3584 | } | |
3585 | ||
3586 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3587 | if (! bfd_elf64_bfd_final_link (abfd, info)) | |
3588 | return false; | |
3589 | ||
3590 | /* Now write out the computed sections. */ | |
3591 | ||
ff12f303 ILT |
3592 | /* The .got subsections... */ |
3593 | { | |
3594 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
3595 | for (i = alpha_elf_hash_table(info)->got_list; | |
3596 | i != NULL; | |
3597 | i = alpha_elf_tdata(i)->got_link_next) | |
3598 | { | |
3599 | asection *sgot; | |
3600 | ||
3601 | /* elf_bfd_final_link already did everything in dynobj. */ | |
3602 | if (i == dynobj) | |
3603 | continue; | |
3604 | ||
3605 | sgot = alpha_elf_tdata(i)->got; | |
3606 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
3607 | sgot->contents, sgot->output_offset, | |
3608 | sgot->_raw_size)) | |
3609 | return false; | |
3610 | } | |
3611 | } | |
3612 | ||
297a4f1a ILT |
3613 | #ifdef ERIC_neverdef |
3614 | if (reginfo_sec != (asection *) NULL) | |
3615 | { | |
3616 | Elf64_External_RegInfo ext; | |
3617 | ||
3618 | bfd_alpha_elf64_swap_reginfo_out (abfd, ®info, &ext); | |
3619 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
3620 | (file_ptr) 0, sizeof ext)) | |
3621 | return false; | |
3622 | } | |
3623 | #endif | |
3624 | ||
3625 | if (mdebug_sec != (asection *) NULL) | |
3626 | { | |
3627 | BFD_ASSERT (abfd->output_has_begun); | |
3628 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
3629 | swap, info, | |
3630 | mdebug_sec->filepos)) | |
3631 | return false; | |
3632 | ||
3633 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
3634 | } | |
3635 | ||
3636 | if (gptab_data_sec != (asection *) NULL) | |
3637 | { | |
3638 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
3639 | gptab_data_sec->contents, | |
3640 | (file_ptr) 0, | |
3641 | gptab_data_sec->_raw_size)) | |
3642 | return false; | |
3643 | } | |
3644 | ||
3645 | if (gptab_bss_sec != (asection *) NULL) | |
3646 | { | |
3647 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
3648 | gptab_bss_sec->contents, | |
3649 | (file_ptr) 0, | |
3650 | gptab_bss_sec->_raw_size)) | |
3651 | return false; | |
3652 | } | |
3653 | ||
3654 | return true; | |
3655 | } | |
3656 | \f | |
3657 | /* ECOFF swapping routines. These are used when dealing with the | |
3658 | .mdebug section, which is in the ECOFF debugging format. Copied | |
3659 | from elf32-mips.c. */ | |
3660 | static const struct ecoff_debug_swap | |
3661 | elf64_alpha_ecoff_debug_swap = | |
3662 | { | |
3663 | /* Symbol table magic number. */ | |
3664 | magicSym2, | |
3665 | /* Alignment of debugging information. E.g., 4. */ | |
3666 | 8, | |
3667 | /* Sizes of external symbolic information. */ | |
3668 | sizeof (struct hdr_ext), | |
3669 | sizeof (struct dnr_ext), | |
3670 | sizeof (struct pdr_ext), | |
3671 | sizeof (struct sym_ext), | |
3672 | sizeof (struct opt_ext), | |
3673 | sizeof (struct fdr_ext), | |
3674 | sizeof (struct rfd_ext), | |
3675 | sizeof (struct ext_ext), | |
3676 | /* Functions to swap in external symbolic data. */ | |
3677 | ecoff_swap_hdr_in, | |
3678 | ecoff_swap_dnr_in, | |
3679 | ecoff_swap_pdr_in, | |
3680 | ecoff_swap_sym_in, | |
3681 | ecoff_swap_opt_in, | |
3682 | ecoff_swap_fdr_in, | |
3683 | ecoff_swap_rfd_in, | |
3684 | ecoff_swap_ext_in, | |
3685 | _bfd_ecoff_swap_tir_in, | |
3686 | _bfd_ecoff_swap_rndx_in, | |
3687 | /* Functions to swap out external symbolic data. */ | |
3688 | ecoff_swap_hdr_out, | |
3689 | ecoff_swap_dnr_out, | |
3690 | ecoff_swap_pdr_out, | |
3691 | ecoff_swap_sym_out, | |
3692 | ecoff_swap_opt_out, | |
3693 | ecoff_swap_fdr_out, | |
3694 | ecoff_swap_rfd_out, | |
3695 | ecoff_swap_ext_out, | |
3696 | _bfd_ecoff_swap_tir_out, | |
3697 | _bfd_ecoff_swap_rndx_out, | |
3698 | /* Function to read in symbolic data. */ | |
3699 | elf64_alpha_read_ecoff_info | |
3700 | }; | |
3701 | \f | |
3702 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec | |
3703 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
3704 | #define ELF_ARCH bfd_arch_alpha | |
3705 | #define ELF_MACHINE_CODE EM_ALPHA | |
3706 | #define ELF_MAXPAGESIZE 0x100000 | |
3707 | ||
3708 | #define bfd_elf64_bfd_link_hash_table_create \ | |
3709 | elf64_alpha_bfd_link_hash_table_create | |
3710 | ||
3711 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
3712 | elf64_alpha_bfd_reloc_type_lookup | |
3713 | #define elf_info_to_howto \ | |
3714 | elf64_alpha_info_to_howto | |
3715 | ||
ff12f303 ILT |
3716 | #define bfd_elf64_mkobject \ |
3717 | elf64_alpha_mkobject | |
3718 | ||
297a4f1a | 3719 | #define elf_backend_object_p \ |
ff12f303 | 3720 | elf64_alpha_object_p |
297a4f1a ILT |
3721 | #define elf_backend_section_from_shdr \ |
3722 | elf64_alpha_section_from_shdr | |
3723 | #define elf_backend_fake_sections \ | |
3724 | elf64_alpha_fake_sections | |
3725 | #define elf_backend_additional_program_headers \ | |
3726 | elf64_alpha_additional_program_headers | |
3727 | ||
303e7257 ILT |
3728 | #define bfd_elf64_bfd_is_local_label_name \ |
3729 | elf64_alpha_is_local_label_name | |
297a4f1a ILT |
3730 | #define bfd_elf64_find_nearest_line \ |
3731 | elf64_alpha_find_nearest_line | |
3732 | ||
3733 | #define elf_backend_check_relocs \ | |
3734 | elf64_alpha_check_relocs | |
3735 | #define elf_backend_create_dynamic_sections \ | |
3736 | elf64_alpha_create_dynamic_sections | |
3737 | #define elf_backend_adjust_dynamic_symbol \ | |
3738 | elf64_alpha_adjust_dynamic_symbol | |
ff12f303 ILT |
3739 | #define elf_backend_always_size_sections \ |
3740 | elf64_alpha_always_size_sections | |
297a4f1a ILT |
3741 | #define elf_backend_size_dynamic_sections \ |
3742 | elf64_alpha_size_dynamic_sections | |
3743 | #define elf_backend_relocate_section \ | |
3744 | elf64_alpha_relocate_section | |
3745 | #define elf_backend_finish_dynamic_symbol \ | |
3746 | elf64_alpha_finish_dynamic_symbol | |
3747 | #define elf_backend_finish_dynamic_sections \ | |
3748 | elf64_alpha_finish_dynamic_sections | |
3749 | #define bfd_elf64_bfd_final_link \ | |
3750 | elf64_alpha_final_link | |
3751 | ||
3752 | #define elf_backend_ecoff_debug_swap \ | |
3753 | &elf64_alpha_ecoff_debug_swap | |
3754 | ||
3755 | /* | |
3756 | * A few constants that determine how the .plt section is set up. | |
3757 | */ | |
3758 | #define elf_backend_want_got_plt 0 | |
3759 | #define elf_backend_plt_readonly 0 | |
3760 | #define elf_backend_want_plt_sym 1 | |
3761 | ||
3762 | #include "elf64-target.h" |