Commit | Line | Data |
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ff12f303 | 1 | /* Alpha specific support for 64-bit ELF |
69842d08 | 2 | Copyright 1996, 1997, 1998 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 *)); | |
69842d08 RH |
105 | static boolean elf64_alpha_size_got_sections |
106 | PARAMS ((bfd *, struct bfd_link_info *)); | |
303e7257 ILT |
107 | static boolean elf64_alpha_always_size_sections |
108 | PARAMS ((bfd *, struct bfd_link_info *)); | |
109 | static boolean elf64_alpha_calc_dynrel_sizes | |
110 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); | |
69842d08 RH |
111 | static boolean elf64_alpha_add_symbol_hook |
112 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
113 | const char **, flagword *, asection **, bfd_vma *)); | |
297a4f1a ILT |
114 | static boolean elf64_alpha_check_relocs |
115 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
116 | const Elf_Internal_Rela *)); | |
117 | static boolean elf64_alpha_adjust_dynamic_symbol | |
118 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
119 | static boolean elf64_alpha_size_dynamic_sections | |
120 | PARAMS((bfd *, struct bfd_link_info *)); | |
121 | static boolean elf64_alpha_adjust_dynindx | |
122 | PARAMS((struct elf_link_hash_entry *, PTR)); | |
123 | static boolean elf64_alpha_relocate_section | |
124 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
125 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
126 | static boolean elf64_alpha_finish_dynamic_symbol | |
127 | PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
128 | Elf_Internal_Sym *)); | |
129 | static boolean elf64_alpha_finish_dynamic_sections | |
130 | PARAMS((bfd *, struct bfd_link_info *)); | |
131 | static boolean elf64_alpha_final_link | |
132 | PARAMS((bfd *, struct bfd_link_info *)); | |
133 | ||
134 | \f | |
297a4f1a ILT |
135 | struct alpha_elf_link_hash_entry |
136 | { | |
137 | struct elf_link_hash_entry root; | |
138 | ||
139 | /* External symbol information. */ | |
140 | EXTR esym; | |
37d7888d | 141 | |
ff12f303 ILT |
142 | /* Cumulative flags for all the .got entries. */ |
143 | int flags; | |
144 | ||
37d7888d | 145 | /* Contexts (LITUSE) in which a literal was referenced. */ |
ff12f303 ILT |
146 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
147 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
148 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
149 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08 | |
150 | ||
151 | /* Used to implement multiple .got subsections. */ | |
152 | struct alpha_elf_got_entry | |
153 | { | |
154 | struct alpha_elf_got_entry *next; | |
155 | ||
156 | /* which .got subsection? */ | |
157 | bfd *gotobj; | |
158 | ||
159 | /* the addend in effect for this entry. */ | |
160 | bfd_vma addend; | |
161 | ||
162 | /* the .got offset for this entry. */ | |
163 | int got_offset; | |
164 | ||
165 | int flags; | |
166 | ||
167 | /* An additional flag. */ | |
168 | #define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10 | |
69842d08 RH |
169 | |
170 | int use_count; | |
ff12f303 ILT |
171 | } *got_entries; |
172 | ||
173 | /* used to count non-got, non-plt relocations for delayed sizing | |
174 | of relocation sections. */ | |
175 | struct alpha_elf_reloc_entry | |
176 | { | |
177 | struct alpha_elf_reloc_entry *next; | |
178 | ||
179 | /* which .reloc section? */ | |
180 | asection *srel; | |
181 | ||
182 | /* what kind of relocation? */ | |
183 | unsigned long rtype; | |
184 | ||
185 | /* how many did we find? */ | |
186 | unsigned long count; | |
187 | } *reloc_entries; | |
297a4f1a ILT |
188 | }; |
189 | ||
190 | /* Alpha ELF linker hash table. */ | |
191 | ||
192 | struct alpha_elf_link_hash_table | |
193 | { | |
194 | struct elf_link_hash_table root; | |
ff12f303 ILT |
195 | |
196 | /* The head of a list of .got subsections linked through | |
197 | alpha_elf_tdata(abfd)->got_link_next. */ | |
198 | bfd *got_list; | |
297a4f1a ILT |
199 | }; |
200 | ||
201 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
202 | ||
203 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
204 | ((struct alpha_elf_link_hash_entry *) \ | |
205 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
206 | (copy), (follow))) | |
207 | ||
208 | /* Traverse a Alpha ELF linker hash table. */ | |
209 | ||
210 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
211 | (elf_link_hash_traverse \ | |
212 | (&(table)->root, \ | |
213 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
214 | (info))) | |
215 | ||
216 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
217 | ||
218 | #define alpha_elf_hash_table(p) \ | |
219 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
220 | ||
ff12f303 ILT |
221 | /* Get the object's symbols as our own entry type. */ |
222 | ||
223 | #define alpha_elf_sym_hashes(abfd) \ | |
224 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
225 | ||
226 | /* Should we do dynamic things to this symbol? */ | |
227 | ||
228 | #define alpha_elf_dynamic_symbol_p(h, info) \ | |
303e7257 | 229 | (((info)->shared && !(info)->symbolic && (h)->dynindx != -1) \ |
ff12f303 ILT |
230 | || (((h)->elf_link_hash_flags \ |
231 | & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \ | |
232 | == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))) | |
233 | ||
297a4f1a ILT |
234 | /* Create an entry in a Alpha ELF linker hash table. */ |
235 | ||
236 | static struct bfd_hash_entry * | |
237 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
238 | struct bfd_hash_entry *entry; | |
239 | struct bfd_hash_table *table; | |
240 | const char *string; | |
241 | { | |
242 | struct alpha_elf_link_hash_entry *ret = | |
243 | (struct alpha_elf_link_hash_entry *) entry; | |
244 | ||
245 | /* Allocate the structure if it has not already been allocated by a | |
246 | subclass. */ | |
247 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
248 | ret = ((struct alpha_elf_link_hash_entry *) | |
249 | bfd_hash_allocate (table, | |
250 | sizeof (struct alpha_elf_link_hash_entry))); | |
251 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
252 | return (struct bfd_hash_entry *) ret; | |
253 | ||
254 | /* Call the allocation method of the superclass. */ | |
255 | ret = ((struct alpha_elf_link_hash_entry *) | |
256 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
257 | table, string)); | |
258 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
259 | { | |
260 | /* Set local fields. */ | |
261 | memset (&ret->esym, 0, sizeof (EXTR)); | |
262 | /* We use -2 as a marker to indicate that the information has | |
263 | not been set. -1 means there is no associated ifd. */ | |
264 | ret->esym.ifd = -2; | |
37d7888d | 265 | ret->flags = 0; |
ff12f303 ILT |
266 | ret->got_entries = NULL; |
267 | ret->reloc_entries = NULL; | |
297a4f1a ILT |
268 | } |
269 | ||
270 | return (struct bfd_hash_entry *) ret; | |
271 | } | |
272 | ||
273 | /* Create a Alpha ELF linker hash table. */ | |
274 | ||
275 | static struct bfd_link_hash_table * | |
276 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
277 | bfd *abfd; | |
278 | { | |
279 | struct alpha_elf_link_hash_table *ret; | |
280 | ||
281 | ret = ((struct alpha_elf_link_hash_table *) | |
282 | bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table))); | |
283 | if (ret == (struct alpha_elf_link_hash_table *) NULL) | |
284 | return NULL; | |
285 | ||
286 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
287 | elf64_alpha_link_hash_newfunc)) | |
288 | { | |
289 | bfd_release (abfd, ret); | |
290 | return NULL; | |
291 | } | |
292 | ||
293 | return &ret->root.root; | |
294 | } | |
295 | \f | |
ff12f303 ILT |
296 | /* We have some private fields hanging off of the elf_tdata structure. */ |
297 | ||
298 | struct alpha_elf_obj_tdata | |
299 | { | |
300 | struct elf_obj_tdata root; | |
301 | ||
302 | /* For every input file, these are the got entries for that object's | |
303 | local symbols. */ | |
304 | struct alpha_elf_got_entry ** local_got_entries; | |
297a4f1a | 305 | |
ff12f303 ILT |
306 | /* For every input file, this is the object that owns the got that |
307 | this input file uses. */ | |
308 | bfd *gotobj; | |
309 | ||
310 | /* For every got, this is a linked list through the objects using this got */ | |
311 | bfd *in_got_link_next; | |
312 | ||
313 | /* For every got, this is a link to the next got subsegment. */ | |
314 | bfd *got_link_next; | |
315 | ||
316 | /* For every got, this is the section. */ | |
317 | asection *got; | |
318 | ||
319 | /* For every got, this is it's total number of *entries*. */ | |
320 | int total_got_entries; | |
321 | ||
322 | /* For every got, this is the sum of the number of *entries* required | |
323 | to hold all of the member object's local got. */ | |
324 | int n_local_got_entries; | |
325 | }; | |
326 | ||
327 | #define alpha_elf_tdata(abfd) \ | |
328 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
329 | ||
330 | static boolean | |
331 | elf64_alpha_mkobject (abfd) | |
332 | bfd *abfd; | |
333 | { | |
334 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); | |
335 | if (abfd->tdata.any == NULL) | |
336 | return false; | |
337 | return true; | |
338 | } | |
3a13dd8f RH |
339 | |
340 | static boolean | |
341 | elf64_alpha_object_p (abfd) | |
342 | bfd *abfd; | |
343 | { | |
344 | /* Allocate our special target data. */ | |
345 | struct alpha_elf_obj_tdata *new_tdata; | |
346 | new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); | |
347 | if (new_tdata == NULL) | |
348 | return false; | |
349 | new_tdata->root = *abfd->tdata.elf_obj_data; | |
350 | abfd->tdata.any = new_tdata; | |
351 | ||
352 | /* Set the right machine number for an Alpha ELF file. */ | |
353 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
354 | } | |
ff12f303 | 355 | \f |
297a4f1a ILT |
356 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
357 | from smaller values. Start with zero, widen, *then* decrement. */ | |
358 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
359 | ||
360 | static reloc_howto_type elf64_alpha_howto_table[] = | |
361 | { | |
362 | HOWTO (R_ALPHA_NONE, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 8, /* bitsize */ | |
366 | true, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_dont, /* complain_on_overflow */ | |
369 | elf64_alpha_reloc_nil, /* special_function */ | |
370 | "NONE", /* name */ | |
371 | false, /* partial_inplace */ | |
372 | 0, /* src_mask */ | |
373 | 0, /* dst_mask */ | |
374 | true), /* pcrel_offset */ | |
375 | ||
376 | /* A 32 bit reference to a symbol. */ | |
377 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 32, /* bitsize */ | |
381 | false, /* pc_relative */ | |
382 | 0, /* bitpos */ | |
383 | complain_overflow_bitfield, /* complain_on_overflow */ | |
384 | 0, /* special_function */ | |
385 | "REFLONG", /* name */ | |
386 | false, /* partial_inplace */ | |
387 | 0xffffffff, /* src_mask */ | |
388 | 0xffffffff, /* dst_mask */ | |
389 | false), /* pcrel_offset */ | |
390 | ||
391 | /* A 64 bit reference to a symbol. */ | |
392 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
395 | 64, /* bitsize */ | |
396 | false, /* pc_relative */ | |
397 | 0, /* bitpos */ | |
398 | complain_overflow_bitfield, /* complain_on_overflow */ | |
399 | 0, /* special_function */ | |
400 | "REFQUAD", /* name */ | |
401 | false, /* partial_inplace */ | |
402 | MINUS_ONE, /* src_mask */ | |
403 | MINUS_ONE, /* dst_mask */ | |
404 | false), /* pcrel_offset */ | |
405 | ||
406 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
407 | that when the value is used the value of the gp register will be | |
408 | added in. */ | |
409 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 32, /* bitsize */ | |
413 | false, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_bitfield, /* complain_on_overflow */ | |
416 | 0, /* special_function */ | |
417 | "GPREL32", /* name */ | |
418 | false, /* partial_inplace */ | |
419 | 0xffffffff, /* src_mask */ | |
420 | 0xffffffff, /* dst_mask */ | |
421 | false), /* pcrel_offset */ | |
422 | ||
423 | /* Used for an instruction that refers to memory off the GP register. */ | |
424 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
428 | false, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
431 | 0, /* special_function */ | |
ff12f303 | 432 | "ELF_LITERAL", /* name */ |
297a4f1a ILT |
433 | false, /* partial_inplace */ |
434 | 0xffff, /* src_mask */ | |
435 | 0xffff, /* dst_mask */ | |
436 | false), /* pcrel_offset */ | |
437 | ||
ff12f303 | 438 | /* This reloc only appears immediately following an ELF_LITERAL reloc. |
297a4f1a ILT |
439 | It identifies a use of the literal. The symbol index is special: |
440 | 1 means the literal address is in the base register of a memory | |
441 | format instruction; 2 means the literal address is in the byte | |
442 | offset register of a byte-manipulation instruction; 3 means the | |
443 | literal address is in the target register of a jsr instruction. | |
444 | This does not actually do any relocation. */ | |
445 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
446 | 0, /* rightshift */ | |
447 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
448 | 32, /* bitsize */ | |
449 | false, /* pc_relative */ | |
450 | 0, /* bitpos */ | |
451 | complain_overflow_dont, /* complain_on_overflow */ | |
452 | elf64_alpha_reloc_nil, /* special_function */ | |
453 | "LITUSE", /* name */ | |
454 | false, /* partial_inplace */ | |
455 | 0, /* src_mask */ | |
456 | 0, /* dst_mask */ | |
457 | false), /* pcrel_offset */ | |
458 | ||
459 | /* Load the gp register. This is always used for a ldah instruction | |
460 | which loads the upper 16 bits of the gp register. The symbol | |
461 | index of the GPDISP instruction is an offset in bytes to the lda | |
462 | instruction that loads the lower 16 bits. The value to use for | |
463 | the relocation is the difference between the GP value and the | |
464 | current location; the load will always be done against a register | |
465 | holding the current address. | |
466 | ||
ff12f303 | 467 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If |
297a4f1a ILT |
468 | any offset is present in the instructions, it is an offset from |
469 | the register to the ldah instruction. This lets us avoid any | |
470 | stupid hackery like inventing a gp value to do partial relocation | |
471 | against. Also unlike ECOFF, we do the whole relocation off of | |
472 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
473 | space consuming bit, that, since all the information was present | |
474 | in the GPDISP_HI16 reloc. */ | |
475 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
476 | 16, /* rightshift */ | |
477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 16, /* bitsize */ | |
479 | false, /* pc_relative */ | |
480 | 0, /* bitpos */ | |
481 | complain_overflow_dont, /* complain_on_overflow */ | |
482 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
483 | "GPDISP", /* name */ | |
484 | false, /* partial_inplace */ | |
485 | 0xffff, /* src_mask */ | |
486 | 0xffff, /* dst_mask */ | |
487 | true), /* pcrel_offset */ | |
488 | ||
489 | /* A 21 bit branch. */ | |
490 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
491 | 2, /* rightshift */ | |
492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
493 | 21, /* bitsize */ | |
494 | true, /* pc_relative */ | |
495 | 0, /* bitpos */ | |
496 | complain_overflow_signed, /* complain_on_overflow */ | |
497 | 0, /* special_function */ | |
498 | "BRADDR", /* name */ | |
499 | false, /* partial_inplace */ | |
500 | 0x1fffff, /* src_mask */ | |
501 | 0x1fffff, /* dst_mask */ | |
502 | true), /* pcrel_offset */ | |
503 | ||
504 | /* A hint for a jump to a register. */ | |
505 | HOWTO (R_ALPHA_HINT, /* type */ | |
506 | 2, /* rightshift */ | |
507 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
508 | 14, /* bitsize */ | |
509 | true, /* pc_relative */ | |
510 | 0, /* bitpos */ | |
511 | complain_overflow_dont, /* complain_on_overflow */ | |
512 | 0, /* special_function */ | |
513 | "HINT", /* name */ | |
514 | false, /* partial_inplace */ | |
515 | 0x3fff, /* src_mask */ | |
516 | 0x3fff, /* dst_mask */ | |
517 | true), /* pcrel_offset */ | |
518 | ||
519 | /* 16 bit PC relative offset. */ | |
520 | HOWTO (R_ALPHA_SREL16, /* type */ | |
521 | 0, /* rightshift */ | |
522 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
523 | 16, /* bitsize */ | |
524 | true, /* pc_relative */ | |
525 | 0, /* bitpos */ | |
526 | complain_overflow_signed, /* complain_on_overflow */ | |
527 | 0, /* special_function */ | |
528 | "SREL16", /* name */ | |
529 | false, /* partial_inplace */ | |
530 | 0xffff, /* src_mask */ | |
531 | 0xffff, /* dst_mask */ | |
532 | false), /* pcrel_offset */ | |
533 | ||
534 | /* 32 bit PC relative offset. */ | |
535 | HOWTO (R_ALPHA_SREL32, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 32, /* bitsize */ | |
539 | true, /* pc_relative */ | |
540 | 0, /* bitpos */ | |
541 | complain_overflow_signed, /* complain_on_overflow */ | |
542 | 0, /* special_function */ | |
543 | "SREL32", /* name */ | |
544 | false, /* partial_inplace */ | |
545 | 0xffffffff, /* src_mask */ | |
546 | 0xffffffff, /* dst_mask */ | |
547 | false), /* pcrel_offset */ | |
548 | ||
549 | /* A 64 bit PC relative offset. */ | |
550 | HOWTO (R_ALPHA_SREL64, /* type */ | |
551 | 0, /* rightshift */ | |
552 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
553 | 64, /* bitsize */ | |
554 | true, /* pc_relative */ | |
555 | 0, /* bitpos */ | |
556 | complain_overflow_signed, /* complain_on_overflow */ | |
557 | 0, /* special_function */ | |
558 | "SREL64", /* name */ | |
559 | false, /* partial_inplace */ | |
560 | MINUS_ONE, /* src_mask */ | |
561 | MINUS_ONE, /* dst_mask */ | |
562 | false), /* pcrel_offset */ | |
563 | ||
564 | /* Push a value on the reloc evaluation stack. */ | |
3a13dd8f RH |
565 | /* Not implemented -- it's dumb. */ |
566 | HOWTO (R_ALPHA_OP_PUSH, /* type */ | |
297a4f1a ILT |
567 | 0, /* rightshift */ |
568 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
569 | 0, /* bitsize */ | |
570 | false, /* pc_relative */ | |
571 | 0, /* bitpos */ | |
572 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 573 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
574 | "OP_PUSH", /* name */ |
575 | false, /* partial_inplace */ | |
576 | 0, /* src_mask */ | |
577 | 0, /* dst_mask */ | |
578 | false), /* pcrel_offset */ | |
579 | ||
580 | /* Store the value from the stack at the given address. Store it in | |
581 | a bitfield of size r_size starting at bit position r_offset. */ | |
3a13dd8f RH |
582 | /* Not implemented -- it's dumb. */ |
583 | HOWTO (R_ALPHA_OP_STORE, /* type */ | |
297a4f1a ILT |
584 | 0, /* rightshift */ |
585 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
586 | 64, /* bitsize */ | |
587 | false, /* pc_relative */ | |
588 | 0, /* bitpos */ | |
589 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 590 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
591 | "OP_STORE", /* name */ |
592 | false, /* partial_inplace */ | |
593 | 0, /* src_mask */ | |
594 | MINUS_ONE, /* dst_mask */ | |
595 | false), /* pcrel_offset */ | |
596 | ||
597 | /* Subtract the reloc address from the value on the top of the | |
598 | relocation stack. */ | |
3a13dd8f RH |
599 | /* Not implemented -- it's dumb. */ |
600 | HOWTO (R_ALPHA_OP_PSUB, /* type */ | |
297a4f1a ILT |
601 | 0, /* rightshift */ |
602 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
603 | 0, /* bitsize */ | |
604 | false, /* pc_relative */ | |
605 | 0, /* bitpos */ | |
606 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 607 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
608 | "OP_PSUB", /* name */ |
609 | false, /* partial_inplace */ | |
610 | 0, /* src_mask */ | |
611 | 0, /* dst_mask */ | |
612 | false), /* pcrel_offset */ | |
613 | ||
614 | /* Shift the value on the top of the relocation stack right by the | |
615 | given value. */ | |
3a13dd8f RH |
616 | /* Not implemented -- it's dumb. */ |
617 | HOWTO (R_ALPHA_OP_PRSHIFT, /* type */ | |
297a4f1a ILT |
618 | 0, /* rightshift */ |
619 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
620 | 0, /* bitsize */ | |
621 | false, /* pc_relative */ | |
622 | 0, /* bitpos */ | |
623 | complain_overflow_dont, /* complain_on_overflow */ | |
ff12f303 | 624 | elf64_alpha_reloc_bad, /* special_function */ |
297a4f1a ILT |
625 | "OP_PRSHIFT", /* name */ |
626 | false, /* partial_inplace */ | |
627 | 0, /* src_mask */ | |
628 | 0, /* dst_mask */ | |
629 | false), /* pcrel_offset */ | |
630 | ||
3a13dd8f RH |
631 | /* Change the value of GP used by +r_addend until the next GPVALUE or the |
632 | end of the input bfd. */ | |
633 | /* Not implemented -- it's dumb. */ | |
634 | HOWTO (R_ALPHA_GPVALUE, | |
635 | 0, /* rightshift */ | |
636 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
637 | 0, /* bitsize */ | |
638 | false, /* pc_relative */ | |
639 | 0, /* bitpos */ | |
640 | complain_overflow_dont, /* complain_on_overflow */ | |
641 | elf64_alpha_reloc_bad, /* special_function */ | |
642 | "GPVALUE", /* name */ | |
643 | false, /* partial_inplace */ | |
644 | 0, /* src_mask */ | |
645 | 0, /* dst_mask */ | |
646 | false), /* pcrel_offset */ | |
647 | ||
648 | /* The high 16 bits of the displacement from GP to the target. */ | |
3a13dd8f RH |
649 | HOWTO (R_ALPHA_GPRELHIGH, |
650 | 0, /* rightshift */ | |
69842d08 RH |
651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
652 | 16, /* bitsize */ | |
3a13dd8f RH |
653 | false, /* pc_relative */ |
654 | 0, /* bitpos */ | |
69842d08 | 655 | complain_overflow_signed, /* complain_on_overflow */ |
3a13dd8f RH |
656 | elf64_alpha_reloc_bad, /* special_function */ |
657 | "GPRELHIGH", /* name */ | |
658 | false, /* partial_inplace */ | |
69842d08 RH |
659 | 0xffff, /* src_mask */ |
660 | 0xffff, /* dst_mask */ | |
3a13dd8f RH |
661 | false), /* pcrel_offset */ |
662 | ||
663 | /* The low 16 bits of the displacement from GP to the target. */ | |
3a13dd8f RH |
664 | HOWTO (R_ALPHA_GPRELLOW, |
665 | 0, /* rightshift */ | |
69842d08 RH |
666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
667 | 16, /* bitsize */ | |
3a13dd8f RH |
668 | false, /* pc_relative */ |
669 | 0, /* bitpos */ | |
670 | complain_overflow_dont, /* complain_on_overflow */ | |
671 | elf64_alpha_reloc_bad, /* special_function */ | |
672 | "GPRELLOW", /* name */ | |
673 | false, /* partial_inplace */ | |
69842d08 RH |
674 | 0xffff, /* src_mask */ |
675 | 0xffff, /* dst_mask */ | |
3a13dd8f RH |
676 | false), /* pcrel_offset */ |
677 | ||
678 | /* A 16-bit displacement from the GP to the target. */ | |
679 | /* XXX: Not implemented. */ | |
680 | HOWTO (R_ALPHA_IMMED_GP_16, | |
681 | 0, /* rightshift */ | |
69842d08 RH |
682 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
683 | 16, /* bitsize */ | |
3a13dd8f RH |
684 | false, /* pc_relative */ |
685 | 0, /* bitpos */ | |
69842d08 RH |
686 | complain_overflow_signed, /* complain_on_overflow */ |
687 | 0, /* special_function */ | |
3a13dd8f RH |
688 | "IMMED_GP_16", /* name */ |
689 | false, /* partial_inplace */ | |
69842d08 RH |
690 | 0xffff, /* src_mask */ |
691 | 0xffff, /* dst_mask */ | |
3a13dd8f RH |
692 | false), /* pcrel_offset */ |
693 | ||
694 | /* The high bits of a 32-bit displacement from the GP to the target; the | |
695 | low bits are supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ | |
696 | /* XXX: Not implemented. */ | |
697 | HOWTO (R_ALPHA_IMMED_GP_HI32, | |
698 | 0, /* rightshift */ | |
699 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
700 | 0, /* bitsize */ | |
701 | false, /* pc_relative */ | |
702 | 0, /* bitpos */ | |
703 | complain_overflow_dont, /* complain_on_overflow */ | |
704 | elf64_alpha_reloc_bad, /* special_function */ | |
705 | "IMMED_GP_HI32", /* name */ | |
706 | false, /* partial_inplace */ | |
707 | 0, /* src_mask */ | |
708 | 0, /* dst_mask */ | |
709 | false), /* pcrel_offset */ | |
710 | ||
711 | /* The high bits of a 32-bit displacement to the starting address of the | |
712 | current section (the relocation target is ignored); the low bits are | |
713 | supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ | |
714 | /* XXX: Not implemented. */ | |
715 | HOWTO (R_ALPHA_IMMED_SCN_HI32, | |
716 | 0, /* rightshift */ | |
717 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 0, /* bitsize */ | |
719 | false, /* pc_relative */ | |
720 | 0, /* bitpos */ | |
721 | complain_overflow_dont, /* complain_on_overflow */ | |
722 | elf64_alpha_reloc_bad, /* special_function */ | |
723 | "IMMED_SCN_HI32", /* name */ | |
724 | false, /* partial_inplace */ | |
725 | 0, /* src_mask */ | |
726 | 0, /* dst_mask */ | |
727 | false), /* pcrel_offset */ | |
728 | ||
729 | /* The high bits of a 32-bit displacement from the previous br, bsr, jsr | |
730 | or jmp insn (as tagged by a BRADDR or HINT reloc) to the target; the | |
731 | low bits are supplied by subsequent R_ALPHA_IMMED_LO32 relocs. */ | |
732 | /* XXX: Not implemented. */ | |
733 | HOWTO (R_ALPHA_IMMED_BR_HI32, | |
734 | 0, /* rightshift */ | |
735 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
736 | 0, /* bitsize */ | |
737 | false, /* pc_relative */ | |
738 | 0, /* bitpos */ | |
739 | complain_overflow_dont, /* complain_on_overflow */ | |
740 | elf64_alpha_reloc_bad, /* special_function */ | |
741 | "IMMED_BR_HI32", /* name */ | |
742 | false, /* partial_inplace */ | |
743 | 0, /* src_mask */ | |
744 | 0, /* dst_mask */ | |
745 | false), /* pcrel_offset */ | |
746 | ||
747 | /* The low 16 bits of a displacement calculated in a previous HI32 reloc. */ | |
748 | /* XXX: Not implemented. */ | |
749 | HOWTO (R_ALPHA_IMMED_LO32, | |
750 | 0, /* rightshift */ | |
751 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 0, /* bitsize */ | |
753 | false, /* pc_relative */ | |
754 | 0, /* bitpos */ | |
755 | complain_overflow_dont, /* complain_on_overflow */ | |
756 | elf64_alpha_reloc_bad, /* special_function */ | |
757 | "IMMED_LO32", /* name */ | |
758 | false, /* partial_inplace */ | |
759 | 0, /* src_mask */ | |
760 | 0, /* dst_mask */ | |
761 | false), /* pcrel_offset */ | |
762 | ||
297a4f1a | 763 | /* Misc ELF relocations. */ |
3a13dd8f RH |
764 | |
765 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
766 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
767 | is present because every other ELF has one, but should not be used | |
768 | because .dynbss is an ugly thing. */ | |
297a4f1a ILT |
769 | HOWTO (R_ALPHA_COPY, |
770 | 0, | |
771 | 0, | |
772 | 0, | |
773 | false, | |
774 | 0, | |
775 | complain_overflow_dont, | |
776 | bfd_elf_generic_reloc, | |
777 | "COPY", | |
778 | false, | |
779 | 0, | |
ff12f303 | 780 | 0, |
297a4f1a ILT |
781 | true), |
782 | ||
3a13dd8f | 783 | /* A dynamic relocation for a .got entry. */ |
297a4f1a ILT |
784 | HOWTO (R_ALPHA_GLOB_DAT, |
785 | 0, | |
786 | 0, | |
787 | 0, | |
788 | false, | |
789 | 0, | |
790 | complain_overflow_dont, | |
791 | bfd_elf_generic_reloc, | |
792 | "GLOB_DAT", | |
793 | false, | |
794 | 0, | |
ff12f303 | 795 | 0, |
297a4f1a ILT |
796 | true), |
797 | ||
3a13dd8f | 798 | /* A dynamic relocation for a .plt entry. */ |
297a4f1a ILT |
799 | HOWTO (R_ALPHA_JMP_SLOT, |
800 | 0, | |
801 | 0, | |
802 | 0, | |
803 | false, | |
804 | 0, | |
805 | complain_overflow_dont, | |
806 | bfd_elf_generic_reloc, | |
807 | "JMP_SLOT", | |
808 | false, | |
809 | 0, | |
810 | 0, | |
811 | true), | |
812 | ||
3a13dd8f | 813 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ |
297a4f1a ILT |
814 | HOWTO (R_ALPHA_RELATIVE, |
815 | 0, | |
816 | 0, | |
817 | 0, | |
818 | false, | |
819 | 0, | |
820 | complain_overflow_dont, | |
821 | bfd_elf_generic_reloc, | |
ff12f303 | 822 | "RELATIVE", |
297a4f1a ILT |
823 | false, |
824 | 0, | |
825 | 0, | |
826 | true) | |
827 | }; | |
828 | ||
ff12f303 ILT |
829 | /* A relocation function which doesn't do anything. */ |
830 | ||
297a4f1a ILT |
831 | static bfd_reloc_status_type |
832 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
833 | bfd *abfd; | |
834 | arelent *reloc; | |
835 | asymbol *sym; | |
836 | PTR data; | |
837 | asection *sec; | |
838 | bfd *output_bfd; | |
839 | char **error_message; | |
840 | { | |
841 | if (output_bfd) | |
842 | reloc->address += sec->output_offset; | |
843 | return bfd_reloc_ok; | |
844 | } | |
845 | ||
ff12f303 ILT |
846 | /* A relocation function used for an unsupported reloc. */ |
847 | ||
848 | static bfd_reloc_status_type | |
849 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
850 | bfd *abfd; | |
851 | arelent *reloc; | |
852 | asymbol *sym; | |
853 | PTR data; | |
854 | asection *sec; | |
855 | bfd *output_bfd; | |
856 | char **error_message; | |
857 | { | |
858 | if (output_bfd) | |
859 | reloc->address += sec->output_offset; | |
860 | return bfd_reloc_notsupported; | |
861 | } | |
862 | ||
863 | /* Do the work of the GPDISP relocation. */ | |
864 | ||
297a4f1a ILT |
865 | static bfd_reloc_status_type |
866 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
867 | bfd *abfd; | |
868 | bfd_vma gpdisp; | |
ff12f303 ILT |
869 | bfd_byte *p_ldah; |
870 | bfd_byte *p_lda; | |
297a4f1a ILT |
871 | { |
872 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
873 | bfd_vma addend; | |
874 | unsigned long i_ldah, i_lda; | |
875 | ||
ff12f303 ILT |
876 | i_ldah = bfd_get_32 (abfd, p_ldah); |
877 | i_lda = bfd_get_32 (abfd, p_lda); | |
297a4f1a ILT |
878 | |
879 | /* Complain if the instructions are not correct. */ | |
880 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
881 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
882 | ret = bfd_reloc_dangerous; | |
883 | ||
884 | /* Extract the user-supplied offset, mirroring the sign extensions | |
885 | that the instructions perform. */ | |
886 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
887 | addend = (addend ^ 0x80008000) - 0x80008000; | |
888 | ||
889 | gpdisp += addend; | |
890 | ||
211b0be8 RH |
891 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 |
892 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
297a4f1a ILT |
893 | ret = bfd_reloc_overflow; |
894 | ||
895 | /* compensate for the sign extension again. */ | |
896 | i_ldah = ((i_ldah & 0xffff0000) | |
897 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
898 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
899 | ||
900 | bfd_put_32 (abfd, i_ldah, p_ldah); | |
901 | bfd_put_32 (abfd, i_lda, p_lda); | |
902 | ||
903 | return ret; | |
904 | } | |
905 | ||
ff12f303 ILT |
906 | /* The special function for the GPDISP reloc. */ |
907 | ||
297a4f1a ILT |
908 | static bfd_reloc_status_type |
909 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
910 | output_bfd, err_msg) | |
911 | bfd *abfd; | |
912 | arelent *reloc_entry; | |
913 | asymbol *sym; | |
914 | PTR data; | |
915 | asection *input_section; | |
916 | bfd *output_bfd; | |
917 | char **err_msg; | |
918 | { | |
919 | bfd_reloc_status_type ret; | |
920 | bfd_vma gp, relocation; | |
921 | bfd_byte *p_ldah, *p_lda; | |
922 | ||
923 | /* Don't do anything if we're not doing a final link. */ | |
924 | if (output_bfd) | |
925 | { | |
926 | reloc_entry->address += input_section->output_offset; | |
927 | return bfd_reloc_ok; | |
928 | } | |
929 | ||
930 | if (reloc_entry->address > input_section->_cooked_size || | |
931 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) | |
932 | return bfd_reloc_outofrange; | |
933 | ||
ff12f303 | 934 | /* The gp used in the portion of the output object to which this |
297a4f1a ILT |
935 | input object belongs is cached on the input bfd. */ |
936 | gp = _bfd_get_gp_value (abfd); | |
937 | ||
938 | relocation = (input_section->output_section->vma | |
939 | + input_section->output_offset | |
940 | + reloc_entry->address); | |
941 | ||
ff12f303 | 942 | p_ldah = (bfd_byte *) data + reloc_entry->address; |
297a4f1a ILT |
943 | p_lda = p_ldah + reloc_entry->addend; |
944 | ||
945 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
946 | ||
947 | /* Complain if the instructions are not correct. */ | |
948 | if (ret == bfd_reloc_dangerous) | |
53d3ce37 | 949 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); |
297a4f1a ILT |
950 | |
951 | return ret; | |
952 | } | |
953 | ||
297a4f1a ILT |
954 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
955 | ||
956 | struct elf_reloc_map | |
957 | { | |
958 | bfd_reloc_code_real_type bfd_reloc_val; | |
959 | int elf_reloc_val; | |
960 | }; | |
961 | ||
962 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
963 | { | |
964 | {BFD_RELOC_NONE, R_ALPHA_NONE}, | |
965 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
966 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
967 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
968 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
ff12f303 | 969 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, |
297a4f1a ILT |
970 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, |
971 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
ff12f303 ILT |
972 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, |
973 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
974 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
975 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
976 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
297a4f1a ILT |
977 | }; |
978 | ||
979 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
980 | ||
981 | static reloc_howto_type * | |
982 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
983 | bfd *abfd; | |
984 | bfd_reloc_code_real_type code; | |
985 | { | |
986 | const struct elf_reloc_map *i, *e; | |
987 | i = e = elf64_alpha_reloc_map; | |
988 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
989 | for (; i != e; ++i) | |
990 | { | |
991 | if (i->bfd_reloc_val == code) | |
992 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
993 | } | |
994 | return 0; | |
995 | } | |
996 | ||
997 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
998 | ||
999 | static void | |
1000 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
1001 | bfd *abfd; | |
1002 | arelent *cache_ptr; | |
1003 | Elf64_Internal_Rela *dst; | |
1004 | { | |
1005 | unsigned r_type; | |
1006 | ||
1007 | r_type = ELF64_R_TYPE(dst->r_info); | |
1008 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
1009 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1010 | } | |
1011 | \f | |
69842d08 RH |
1012 | /* These functions do relaxation for Alpha ELF. |
1013 | ||
1014 | Currently I'm only handling what I can do with existing compiler | |
1015 | and assembler support, which means no instructions are removed, | |
1016 | though some may be nopped. At this time GCC does not emit enough | |
1017 | information to do all of the relaxing that is possible. It will | |
1018 | take some not small amount of work for that to happen. | |
1019 | ||
1020 | There are a couple of interesting papers that I once read on this | |
1021 | subject, that I cannot find references to at the moment, that | |
1022 | related to Alpha in particular. They are by David Wall, then of | |
1023 | DEC WRL. */ | |
1024 | ||
1025 | #define OP_LDA 0x08 | |
1026 | #define OP_LDAH 0x09 | |
1027 | #define INSN_JSR 0x68004000 | |
1028 | #define INSN_JSR_MASK 0xfc00c000 | |
1029 | #define OP_LDQ 0x29 | |
1030 | #define OP_BR 0x30 | |
1031 | #define OP_BSR 0x34 | |
1032 | #define INSN_UNOP 0x2fe00000 | |
1033 | ||
1034 | struct alpha_relax_info | |
1035 | { | |
1036 | bfd *abfd; | |
1037 | asection *sec; | |
1038 | bfd_byte *contents; | |
1039 | Elf_Internal_Rela *relocs, *relend; | |
1040 | struct bfd_link_info *link_info; | |
1041 | boolean changed_contents; | |
1042 | boolean changed_relocs; | |
1043 | bfd_vma gp; | |
1044 | bfd *gotobj; | |
1045 | struct alpha_elf_link_hash_entry *h; | |
1046 | struct alpha_elf_got_entry *gotent; | |
1047 | }; | |
1048 | ||
1049 | static Elf_Internal_Rela * elf64_alpha_relax_with_lituse | |
1050 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, | |
1051 | Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend)); | |
1052 | ||
1053 | static boolean elf64_alpha_relax_without_lituse | |
1054 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, | |
1055 | Elf_Internal_Rela *irel)); | |
1056 | ||
1057 | static bfd_vma elf64_alpha_relax_opt_call | |
1058 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); | |
1059 | ||
1060 | static boolean elf64_alpha_relax_section | |
1061 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
1062 | boolean *again)); | |
1063 | ||
1064 | static Elf_Internal_Rela * | |
211b0be8 | 1065 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) |
69842d08 RH |
1066 | Elf_Internal_Rela *rel, *relend; |
1067 | bfd_vma offset; | |
1068 | int type; | |
1069 | { | |
1070 | while (rel < relend) | |
1071 | { | |
1072 | if (rel->r_offset == offset && ELF64_R_TYPE (rel->r_info) == type) | |
1073 | return rel; | |
1074 | ++rel; | |
1075 | } | |
1076 | return NULL; | |
1077 | } | |
1078 | ||
1079 | static Elf_Internal_Rela * | |
1080 | elf64_alpha_relax_with_lituse (info, symval, irel, irelend) | |
1081 | struct alpha_relax_info *info; | |
1082 | bfd_vma symval; | |
1083 | Elf_Internal_Rela *irel, *irelend; | |
1084 | { | |
1085 | Elf_Internal_Rela *urel; | |
1086 | int flags, count, i; | |
1087 | bfd_signed_vma disp; | |
1088 | boolean fits16; | |
1089 | boolean fits32; | |
1090 | boolean lit_reused = false; | |
1091 | boolean all_optimized = true; | |
1092 | unsigned int lit_insn; | |
1093 | ||
1094 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1095 | if (lit_insn >> 26 != OP_LDQ) | |
1096 | { | |
1097 | ((*_bfd_error_handler) | |
1098 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
1099 | bfd_get_filename (info->abfd), info->sec->name, | |
1100 | (unsigned long)irel->r_offset)); | |
1101 | return irel; | |
1102 | } | |
1103 | ||
1104 | /* Summarize how this particular LITERAL is used. */ | |
1105 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
1106 | { | |
1107 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) | |
1108 | break; | |
1109 | if (urel->r_addend >= 0 && urel->r_addend <= 3) | |
1110 | flags |= 1 << urel->r_addend; | |
1111 | } | |
1112 | ||
1113 | /* A little preparation for the loop... */ | |
1114 | disp = symval - info->gp; | |
1115 | fits16 = (disp >= -(bfd_signed_vma)0x8000 && disp < 0x8000); | |
1116 | fits32 = (disp >= -(bfd_signed_vma)0x80000000 && disp < 0x7fff8000); | |
1117 | ||
1118 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) | |
1119 | { | |
1120 | unsigned int insn; | |
1121 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); | |
1122 | ||
1123 | switch (urel->r_addend) | |
1124 | { | |
1125 | default: /* 0 = ADDRESS FORMAT */ | |
1126 | /* This type is really just a placeholder to note that all | |
1127 | uses cannot be optimized, but to still allow some. */ | |
1128 | all_optimized = false; | |
1129 | break; | |
1130 | ||
1131 | case 1: /* MEM FORMAT */ | |
1132 | /* We can always optimize 16-bit displacements. */ | |
1133 | if (fits16) | |
1134 | { | |
1135 | /* FIXME: sanity check the insn for mem format with | |
1136 | zero addend. */ | |
1137 | ||
1138 | /* Take the op code and dest from this insn, take the base | |
1139 | register from the literal insn. Leave the offset alone. */ | |
1140 | insn = (insn & 0xffe00000) | (lit_insn & 0x001f0000); | |
1141 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1142 | R_ALPHA_GPRELLOW); | |
1143 | urel->r_addend = irel->r_addend; | |
1144 | info->changed_relocs = true; | |
1145 | ||
1146 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1147 | info->changed_contents = true; | |
1148 | } | |
1149 | ||
1150 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ | |
1151 | else if (fits32 && !(flags & ~6)) | |
1152 | { | |
1153 | /* FIXME: sanity check that lit insn Ra is mem insn Rb, and | |
1154 | that mem_insn disp is zero. */ | |
1155 | ||
1156 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1157 | R_ALPHA_GPRELHIGH); | |
1158 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
1159 | bfd_put_32 (info->abfd, lit_insn, | |
1160 | info->contents + irel->r_offset); | |
1161 | lit_reused = true; | |
1162 | info->changed_contents = true; | |
1163 | ||
1164 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1165 | R_ALPHA_GPRELLOW); | |
1166 | urel->r_addend = irel->r_addend; | |
1167 | info->changed_relocs = true; | |
1168 | } | |
1169 | else | |
1170 | all_optimized = false; | |
1171 | break; | |
1172 | ||
1173 | case 2: /* BYTE OFFSET FORMAT */ | |
1174 | /* We can always optimize byte instructions. */ | |
1175 | ||
1176 | /* FIXME: sanity check the insn for byte op. Check that the | |
1177 | literal dest reg is indeed Rb in the byte insn. */ | |
1178 | ||
1179 | insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000; | |
1180 | ||
1181 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1182 | urel->r_addend = 0; | |
1183 | info->changed_relocs = true; | |
1184 | ||
1185 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1186 | info->changed_contents = true; | |
1187 | break; | |
1188 | ||
1189 | case 3: /* CALL FORMAT */ | |
1190 | { | |
1191 | /* If not zero, place to jump without needing pv. */ | |
1192 | bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval); | |
1193 | bfd_vma org = (info->sec->output_section->vma | |
1194 | + info->sec->output_offset | |
1195 | + urel->r_offset + 4); | |
1196 | bfd_signed_vma odisp; | |
1197 | ||
1198 | odisp = (optdest ? optdest : symval) - org; | |
1199 | if (odisp >= -0x400000 && odisp < 0x400000) | |
1200 | { | |
1201 | Elf_Internal_Rela *xrel; | |
1202 | ||
1203 | /* Preserve branch prediction call stack when possible. */ | |
1204 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
1205 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
1206 | else | |
1207 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
1208 | ||
1209 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1210 | R_ALPHA_BRADDR); | |
1211 | urel->r_addend = irel->r_addend; | |
1212 | info->changed_relocs = true; | |
1213 | ||
1214 | /* Kill any HINT reloc that might exist for this insn. */ | |
211b0be8 | 1215 | xrel = (elf64_alpha_find_reloc_at_ofs |
69842d08 RH |
1216 | (info->relocs, info->relend, urel->r_offset, |
1217 | R_ALPHA_HINT)); | |
1218 | if (xrel) | |
1219 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1220 | ||
1221 | if (optdest) | |
1222 | urel->r_addend += optdest - symval; | |
1223 | else | |
1224 | all_optimized = false; | |
1225 | ||
1226 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1227 | info->changed_contents = true; | |
1228 | } | |
1229 | else | |
1230 | all_optimized = false; | |
1231 | ||
1232 | /* ??? If target gp == current gp we can eliminate the gp reload. | |
1233 | This does depend on every place a gp could be reloaded will | |
1234 | be, which currently happens for all code produced by gcc, but | |
1235 | not necessarily by hand-coded assembly, or if sibling calls | |
1236 | are enabled in gcc. | |
1237 | ||
1238 | Perhaps conditionalize this on a flag being set in the target | |
1239 | object file's header, and have gcc set it? */ | |
1240 | } | |
1241 | break; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | /* If all cases were optimized, we can reduce the use count on this | |
1246 | got entry by one, possibly eliminating it. */ | |
1247 | if (all_optimized) | |
1248 | { | |
1249 | info->gotent->use_count -= 1; | |
1250 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; | |
1251 | if (!info->h) | |
1252 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; | |
1253 | ||
1254 | /* If the literal instruction is no longer needed (it may have been | |
1255 | reused. We can eliminate it. | |
1256 | ??? For now, I don't want to deal with compacting the section, | |
1257 | so just nop it out. */ | |
1258 | if (!lit_reused) | |
1259 | { | |
1260 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1261 | info->changed_relocs = true; | |
1262 | ||
1263 | bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset); | |
1264 | info->changed_contents = true; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | return irel + count; | |
1269 | } | |
1270 | ||
1271 | static bfd_vma | |
1272 | elf64_alpha_relax_opt_call (info, symval) | |
1273 | struct alpha_relax_info *info; | |
1274 | bfd_vma symval; | |
1275 | { | |
1276 | /* If the function has the same gp, and we can identify that the | |
1277 | function does not use its function pointer, we can eliminate the | |
1278 | address load. | |
1279 | ||
1280 | ??? The .prologue [0,1] information is what we need. How do we | |
1281 | get it out of the mdebug uglyness? What shall we do when we drop | |
1282 | that crap for dwarf2? | |
1283 | ||
1284 | For now, only consider the case in which there is an identifyable | |
1285 | GP load in the first two words. We can then skip over that load. */ | |
1286 | ||
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | static boolean | |
1291 | elf64_alpha_relax_without_lituse (info, symval, irel) | |
1292 | struct alpha_relax_info *info; | |
1293 | bfd_vma symval; | |
1294 | Elf_Internal_Rela *irel; | |
1295 | { | |
1296 | unsigned int insn; | |
1297 | bfd_signed_vma disp; | |
1298 | ||
1299 | /* Get the instruction. */ | |
1300 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1301 | ||
1302 | if (insn >> 26 != OP_LDQ) | |
1303 | { | |
1304 | ((*_bfd_error_handler) | |
1305 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
1306 | bfd_get_filename (info->abfd), info->sec->name, | |
1307 | (unsigned long) irel->r_offset)); | |
1308 | return true; | |
1309 | } | |
1310 | ||
1311 | /* So we aren't told much. Do what we can with the address load and | |
1312 | fake the rest. All of the optimizations here require that the | |
1313 | offset from the GP fit in 16 bits. */ | |
1314 | ||
1315 | disp = symval - info->gp; | |
1316 | if (disp < -0x8000 || disp >= 0x8000) | |
1317 | return true; | |
1318 | ||
1319 | /* On the LITERAL instruction itself, consider exchanging | |
1320 | `ldq R,X(gp)' for `lda R,Y(gp)'. */ | |
1321 | ||
1322 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
1323 | bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset); | |
1324 | info->changed_contents = true; | |
1325 | ||
1326 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPRELLOW); | |
1327 | info->changed_relocs = true; | |
1328 | ||
1329 | /* Reduce the use count on this got entry by one, possibly | |
1330 | eliminating it. */ | |
1331 | info->gotent->use_count -= 1; | |
1332 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; | |
1333 | if (!info->h) | |
1334 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; | |
1335 | ||
1336 | /* ??? Search forward through this basic block looking for insns | |
1337 | that use the target register. Stop after an insn modifying the | |
1338 | register is seen, or after a branch or call. | |
1339 | ||
1340 | Any such memory load insn may be substituted by a load directly | |
1341 | off the GP. This allows the memory load insn to be issued before | |
1342 | the calculated GP register would otherwise be ready. | |
1343 | ||
1344 | Any such jsr insn can be replaced by a bsr if it is in range. | |
1345 | ||
1346 | This would mean that we'd have to _add_ relocations, the pain of | |
1347 | which gives one pause. */ | |
1348 | ||
1349 | return true; | |
1350 | } | |
1351 | ||
1352 | static boolean | |
1353 | elf64_alpha_relax_section (abfd, sec, link_info, again) | |
1354 | bfd *abfd; | |
1355 | asection *sec; | |
1356 | struct bfd_link_info *link_info; | |
1357 | boolean *again; | |
1358 | { | |
1359 | Elf_Internal_Shdr *symtab_hdr; | |
1360 | Elf_Internal_Rela *internal_relocs; | |
1361 | Elf_Internal_Rela *free_relocs = NULL; | |
1362 | Elf_Internal_Rela *irel, *irelend; | |
1363 | bfd_byte *free_contents = NULL; | |
1364 | Elf64_External_Sym *extsyms = NULL; | |
1365 | Elf64_External_Sym *free_extsyms = NULL; | |
1366 | struct alpha_elf_got_entry **local_got_entries; | |
1367 | struct alpha_relax_info info; | |
1368 | ||
1369 | /* We are not currently changing any sizes, so only one pass. */ | |
1370 | *again = false; | |
1371 | ||
1372 | if (link_info->relocateable | |
1373 | || (sec->flags & SEC_RELOC) == 0 | |
1374 | || sec->reloc_count == 0) | |
1375 | return true; | |
1376 | ||
1377 | /* If this is the first time we have been called for this section, | |
1378 | initialize the cooked size. */ | |
1379 | if (sec->_cooked_size == 0) | |
1380 | sec->_cooked_size = sec->_raw_size; | |
1381 | ||
1382 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1383 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
1384 | ||
1385 | /* Load the relocations for this section. */ | |
1386 | internal_relocs = (_bfd_elf64_link_read_relocs | |
1387 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1388 | link_info->keep_memory)); | |
1389 | if (internal_relocs == NULL) | |
1390 | goto error_return; | |
1391 | if (! link_info->keep_memory) | |
1392 | free_relocs = internal_relocs; | |
1393 | ||
1394 | memset(&info, 0, sizeof(info)); | |
1395 | info.abfd = abfd; | |
1396 | info.sec = sec; | |
1397 | info.link_info = link_info; | |
1398 | info.relocs = internal_relocs; | |
1399 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
1400 | ||
1401 | /* Find the GP for this object. */ | |
1402 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
1403 | if (info.gotobj) | |
1404 | { | |
1405 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; | |
1406 | info.gp = _bfd_get_gp_value (info.gotobj); | |
1407 | if (info.gp == 0) | |
1408 | { | |
1409 | info.gp = (sgot->output_section->vma | |
1410 | + sgot->output_offset | |
1411 | + 0x8000); | |
1412 | _bfd_set_gp_value (info.gotobj, info.gp); | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | for (irel = internal_relocs; irel < irelend; irel++) | |
1417 | { | |
1418 | bfd_vma symval; | |
1419 | unsigned int insn; | |
1420 | ||
1421 | if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL) | |
1422 | continue; | |
1423 | ||
1424 | /* Get the section contents. */ | |
1425 | if (info.contents == NULL) | |
1426 | { | |
1427 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1428 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
1429 | else | |
1430 | { | |
1431 | info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
1432 | if (info.contents == NULL) | |
1433 | goto error_return; | |
1434 | free_contents = info.contents; | |
1435 | ||
1436 | if (! bfd_get_section_contents (abfd, sec, info.contents, | |
1437 | (file_ptr) 0, sec->_raw_size)) | |
1438 | goto error_return; | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | /* Read this BFD's symbols if we haven't done so already. */ | |
1443 | if (extsyms == NULL) | |
1444 | { | |
1445 | if (symtab_hdr->contents != NULL) | |
1446 | extsyms = (Elf64_External_Sym *) symtab_hdr->contents; | |
1447 | else | |
1448 | { | |
1449 | extsyms = ((Elf64_External_Sym *) | |
1450 | bfd_malloc (symtab_hdr->sh_size)); | |
1451 | if (extsyms == NULL) | |
1452 | goto error_return; | |
1453 | free_extsyms = extsyms; | |
1454 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1455 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) | |
1456 | != symtab_hdr->sh_size)) | |
1457 | goto error_return; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | /* Get the value of the symbol referred to by the reloc. */ | |
1462 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1463 | { | |
1464 | Elf_Internal_Sym isym; | |
986c3691 | 1465 | asection *lsec; |
69842d08 RH |
1466 | |
1467 | /* A local symbol. */ | |
1468 | bfd_elf64_swap_symbol_in (abfd, | |
1469 | extsyms + ELF64_R_SYM (irel->r_info), | |
1470 | &isym); | |
986c3691 RH |
1471 | if (isym.st_shndx == SHN_UNDEF) |
1472 | lsec = bfd_und_section_ptr; | |
1473 | else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) | |
1474 | lsec = bfd_section_from_elf_index (abfd, isym.st_shndx); | |
1475 | else if (isym.st_shndx == SHN_ABS) | |
1476 | lsec = bfd_abs_section_ptr; | |
1477 | else if (isym.st_shndx == SHN_COMMON) | |
1478 | lsec = bfd_com_section_ptr; | |
1479 | else | |
1480 | continue; /* who knows. */ | |
69842d08 RH |
1481 | |
1482 | info.h = NULL; | |
1483 | info.gotent = local_got_entries[ELF64_R_SYM(irel->r_info)]; | |
1484 | symval = (isym.st_value | |
986c3691 RH |
1485 | + lsec->output_section->vma |
1486 | + lsec->output_offset); | |
69842d08 RH |
1487 | } |
1488 | else | |
1489 | { | |
1490 | unsigned long indx; | |
1491 | struct alpha_elf_link_hash_entry *h; | |
1492 | struct alpha_elf_got_entry *gotent; | |
1493 | ||
1494 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1495 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
1496 | BFD_ASSERT (h != NULL); | |
1497 | ||
1498 | /* We can't do anthing with undefined or dynamic symbols. */ | |
1499 | if (h->root.root.type == bfd_link_hash_undefined | |
1500 | || h->root.root.type == bfd_link_hash_undefweak | |
1501 | || alpha_elf_dynamic_symbol_p (&h->root, link_info)) | |
1502 | continue; | |
1503 | ||
1504 | /* Search for the got entry to be used by this relocation. */ | |
1505 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
1506 | if (gotent->gotobj == info.gotobj | |
1507 | && gotent->addend == irel->r_addend) | |
1508 | break; | |
1509 | ||
1510 | info.h = h; | |
1511 | info.gotent = gotent; | |
1512 | symval = (h->root.root.u.def.value | |
1513 | + h->root.root.u.def.section->output_section->vma | |
1514 | + h->root.root.u.def.section->output_offset); | |
1515 | } | |
1516 | symval += irel->r_addend; | |
1517 | ||
1518 | BFD_ASSERT(info.gotent != NULL); | |
1519 | ||
1520 | /* If there exist LITUSE relocations immediately following, this | |
1521 | opens up all sorts of interesting optimizations, because we | |
1522 | now know every location that this address load is used. */ | |
1523 | ||
1524 | if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
1525 | { | |
1526 | irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend); | |
1527 | if (irel == NULL) | |
1528 | goto error_return; | |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | if (!elf64_alpha_relax_without_lituse (&info, symval, irel)) | |
1533 | goto error_return; | |
1534 | } | |
1535 | } | |
1536 | ||
1537 | if (!elf64_alpha_size_got_sections (abfd, link_info)) | |
1538 | return false; | |
1539 | ||
1540 | if (info.changed_relocs) | |
1541 | { | |
1542 | elf_section_data (sec)->relocs = internal_relocs; | |
1543 | } | |
1544 | else if (free_relocs != NULL) | |
1545 | { | |
1546 | free (free_relocs); | |
1547 | } | |
1548 | ||
1549 | if (info.changed_contents) | |
1550 | { | |
1551 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
1552 | } | |
1553 | else if (free_contents != NULL) | |
1554 | { | |
1555 | if (! link_info->keep_memory) | |
1556 | free (free_contents); | |
1557 | else | |
1558 | { | |
1559 | /* Cache the section contents for elf_link_input_bfd. */ | |
1560 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | if (free_extsyms != NULL) | |
1565 | { | |
1566 | if (! link_info->keep_memory) | |
1567 | free (free_extsyms); | |
1568 | else | |
1569 | { | |
1570 | /* Cache the symbols for elf_link_input_bfd. */ | |
1571 | symtab_hdr->contents = extsyms; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | return true; | |
1576 | ||
1577 | error_return: | |
1578 | if (free_relocs != NULL) | |
1579 | free (free_relocs); | |
1580 | if (free_contents != NULL) | |
1581 | free (free_contents); | |
1582 | if (free_extsyms != NULL) | |
1583 | free (free_extsyms); | |
1584 | return false; | |
1585 | } | |
1586 | \f | |
297a4f1a ILT |
1587 | /* PLT/GOT Stuff */ |
1588 | #define PLT_HEADER_SIZE 32 | |
1589 | #define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */ | |
1590 | #define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */ | |
1591 | #define PLT_HEADER_WORD3 0x47ff041f /* nop */ | |
1592 | #define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */ | |
1593 | ||
1594 | #define PLT_ENTRY_SIZE 12 | |
3a13dd8f RH |
1595 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ |
1596 | #define PLT_ENTRY_WORD2 0 | |
1597 | #define PLT_ENTRY_WORD3 0 | |
297a4f1a | 1598 | |
ff12f303 | 1599 | #define MAX_GOT_ENTRIES (64*1024 / 8) |
297a4f1a ILT |
1600 | |
1601 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
1602 | \f | |
ff12f303 | 1603 | /* Handle an Alpha specific section when reading an object file. This |
297a4f1a | 1604 | is called when elfcode.h finds a section with an unknown type. |
69842d08 | 1605 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure |
297a4f1a ILT |
1606 | how to. */ |
1607 | ||
1608 | static boolean | |
1609 | elf64_alpha_section_from_shdr (abfd, hdr, name) | |
1610 | bfd *abfd; | |
1611 | Elf64_Internal_Shdr *hdr; | |
1612 | char *name; | |
1613 | { | |
1614 | asection *newsect; | |
1615 | ||
1616 | /* There ought to be a place to keep ELF backend specific flags, but | |
1617 | at the moment there isn't one. We just keep track of the | |
1618 | sections by their name, instead. Fortunately, the ABI gives | |
1619 | suggested names for all the MIPS specific sections, so we will | |
1620 | probably get away with this. */ | |
1621 | switch (hdr->sh_type) | |
1622 | { | |
1623 | case SHT_ALPHA_DEBUG: | |
1624 | if (strcmp (name, ".mdebug") != 0) | |
1625 | return false; | |
1626 | break; | |
1627 | #ifdef ERIC_neverdef | |
1628 | case SHT_ALPHA_REGINFO: | |
1629 | if (strcmp (name, ".reginfo") != 0 | |
1630 | || hdr->sh_size != sizeof (Elf64_External_RegInfo)) | |
1631 | return false; | |
1632 | break; | |
1633 | #endif | |
1634 | default: | |
1635 | return false; | |
1636 | } | |
1637 | ||
1638 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1639 | return false; | |
1640 | newsect = hdr->bfd_section; | |
1641 | ||
1642 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
1643 | { | |
1644 | if (! bfd_set_section_flags (abfd, newsect, | |
1645 | (bfd_get_section_flags (abfd, newsect) | |
1646 | | SEC_DEBUGGING))) | |
1647 | return false; | |
1648 | } | |
1649 | ||
1650 | #ifdef ERIC_neverdef | |
1651 | /* For a .reginfo section, set the gp value in the tdata information | |
1652 | from the contents of this section. We need the gp value while | |
1653 | processing relocs, so we just get it now. */ | |
1654 | if (hdr->sh_type == SHT_ALPHA_REGINFO) | |
1655 | { | |
1656 | Elf64_External_RegInfo ext; | |
1657 | Elf64_RegInfo s; | |
1658 | ||
1659 | if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext, | |
1660 | (file_ptr) 0, sizeof ext)) | |
1661 | return false; | |
1662 | bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s); | |
1663 | elf_gp (abfd) = s.ri_gp_value; | |
1664 | } | |
1665 | #endif | |
1666 | ||
1667 | return true; | |
1668 | } | |
1669 | ||
1670 | /* Set the correct type for an Alpha ELF section. We do this by the | |
1671 | section name, which is a hack, but ought to work. */ | |
1672 | ||
1673 | static boolean | |
1674 | elf64_alpha_fake_sections (abfd, hdr, sec) | |
1675 | bfd *abfd; | |
1676 | Elf64_Internal_Shdr *hdr; | |
1677 | asection *sec; | |
1678 | { | |
1679 | register const char *name; | |
1680 | ||
1681 | name = bfd_get_section_name (abfd, sec); | |
1682 | ||
1683 | if (strcmp (name, ".mdebug") == 0) | |
1684 | { | |
1685 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
1686 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1687 | entsize of 0. FIXME: Does this matter? */ | |
1688 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1689 | hdr->sh_entsize = 0; | |
1690 | else | |
1691 | hdr->sh_entsize = 1; | |
1692 | } | |
1693 | #ifdef ERIC_neverdef | |
1694 | else if (strcmp (name, ".reginfo") == 0) | |
1695 | { | |
1696 | hdr->sh_type = SHT_ALPHA_REGINFO; | |
1697 | /* In a shared object on Irix 5.3, the .reginfo section has an | |
1698 | entsize of 0x18. FIXME: Does this matter? */ | |
1699 | if ((abfd->flags & DYNAMIC) != 0) | |
1700 | hdr->sh_entsize = sizeof (Elf64_External_RegInfo); | |
1701 | else | |
1702 | hdr->sh_entsize = 1; | |
1703 | ||
1704 | /* Force the section size to the correct value, even if the | |
1705 | linker thinks it is larger. The link routine below will only | |
1706 | write out this much data for .reginfo. */ | |
1707 | hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo); | |
1708 | } | |
1709 | else if (strcmp (name, ".hash") == 0 | |
1710 | || strcmp (name, ".dynamic") == 0 | |
1711 | || strcmp (name, ".dynstr") == 0) | |
1712 | { | |
1713 | hdr->sh_entsize = 0; | |
1714 | hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES; | |
1715 | } | |
ff12f303 | 1716 | #endif |
297a4f1a ILT |
1717 | else if (strcmp (name, ".sdata") == 0 |
1718 | || strcmp (name, ".sbss") == 0 | |
1719 | || strcmp (name, ".lit4") == 0 | |
1720 | || strcmp (name, ".lit8") == 0) | |
1721 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
297a4f1a ILT |
1722 | |
1723 | return true; | |
1724 | } | |
1725 | ||
69842d08 RH |
1726 | /* Hook called by the linker routine which adds symbols from an object |
1727 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1728 | ||
1729 | static boolean | |
1730 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1731 | bfd *abfd; | |
1732 | struct bfd_link_info *info; | |
1733 | const Elf_Internal_Sym *sym; | |
1734 | const char **namep; | |
1735 | flagword *flagsp; | |
1736 | asection **secp; | |
1737 | bfd_vma *valp; | |
1738 | { | |
1739 | if (sym->st_shndx == SHN_COMMON | |
1740 | && !info->relocateable | |
1741 | && sym->st_size <= bfd_get_gp_size (abfd)) | |
1742 | { | |
1743 | /* Common symbols less than or equal to -G nn bytes are | |
1744 | automatically put into .sbss. */ | |
1745 | ||
211b0be8 | 1746 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
69842d08 | 1747 | |
211b0be8 | 1748 | if (scomm == NULL) |
69842d08 | 1749 | { |
211b0be8 RH |
1750 | scomm = bfd_make_section (abfd, ".scommon"); |
1751 | if (scomm == NULL | |
1752 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | SEC_LOAD | |
1753 | | SEC_IS_COMMON | |
1754 | | SEC_LINKER_CREATED))) | |
69842d08 RH |
1755 | return false; |
1756 | } | |
1757 | ||
211b0be8 | 1758 | if (bfd_get_section_alignment (abfd, scomm) < sym->st_value) |
69842d08 | 1759 | { |
211b0be8 | 1760 | if (!bfd_set_section_alignment (abfd, scomm, sym->st_value)) |
69842d08 RH |
1761 | return false; |
1762 | } | |
1763 | ||
211b0be8 | 1764 | *secp = scomm; |
69842d08 RH |
1765 | *valp = sym->st_size; |
1766 | } | |
1767 | ||
1768 | return true; | |
1769 | } | |
1770 | ||
ff12f303 ILT |
1771 | /* Return the number of additional phdrs we will need. */ |
1772 | ||
297a4f1a ILT |
1773 | static int |
1774 | elf64_alpha_additional_program_headers (abfd) | |
1775 | bfd *abfd; | |
1776 | { | |
1777 | asection *s; | |
1778 | int ret; | |
1779 | ||
1780 | ret = 0; | |
1781 | ||
1782 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
1783 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
1784 | { | |
1785 | /* We need a PT_ALPHA_REGINFO segment. */ | |
1786 | ++ret; | |
1787 | } | |
1788 | ||
1789 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
1790 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
1791 | { | |
1792 | /* We need a PT_ALPHA_RTPROC segment. */ | |
1793 | ++ret; | |
1794 | } | |
1795 | ||
1796 | return ret; | |
1797 | } | |
1798 | ||
ff12f303 ILT |
1799 | /* Create the .got section. */ |
1800 | ||
297a4f1a ILT |
1801 | static boolean |
1802 | elf64_alpha_create_got_section(abfd, info) | |
1803 | bfd *abfd; | |
1804 | struct bfd_link_info *info; | |
1805 | { | |
1806 | asection *s; | |
297a4f1a ILT |
1807 | |
1808 | if (bfd_get_section_by_name (abfd, ".got")) | |
1809 | return true; | |
1810 | ||
ff12f303 | 1811 | s = bfd_make_section (abfd, ".got"); |
297a4f1a ILT |
1812 | if (s == NULL |
1813 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1814 | | SEC_HAS_CONTENTS |
1815 | | SEC_IN_MEMORY | |
1816 | | SEC_LINKER_CREATED)) | |
297a4f1a ILT |
1817 | || !bfd_set_section_alignment (abfd, s, 3)) |
1818 | return false; | |
1819 | ||
ff12f303 | 1820 | alpha_elf_tdata (abfd)->got = s; |
297a4f1a ILT |
1821 | |
1822 | return true; | |
1823 | } | |
1824 | ||
ff12f303 ILT |
1825 | /* Create all the dynamic sections. */ |
1826 | ||
297a4f1a ILT |
1827 | static boolean |
1828 | elf64_alpha_create_dynamic_sections (abfd, info) | |
1829 | bfd *abfd; | |
1830 | struct bfd_link_info *info; | |
1831 | { | |
ff12f303 | 1832 | asection *s; |
297a4f1a ILT |
1833 | struct elf_link_hash_entry *h; |
1834 | ||
1835 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
1836 | ||
1837 | s = bfd_make_section (abfd, ".plt"); | |
1838 | if (s == NULL | |
1839 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1840 | | SEC_HAS_CONTENTS |
1841 | | SEC_IN_MEMORY | |
1842 | | SEC_LINKER_CREATED | |
297a4f1a ILT |
1843 | | SEC_CODE)) |
1844 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1845 | return false; | |
1846 | ||
1847 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
1848 | .plt section. */ | |
1849 | h = NULL; | |
1850 | if (! (_bfd_generic_link_add_one_symbol | |
1851 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1852 | (bfd_vma) 0, (const char *) NULL, false, | |
1853 | get_elf_backend_data (abfd)->collect, | |
1854 | (struct bfd_link_hash_entry **) &h))) | |
1855 | return false; | |
1856 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1857 | h->type = STT_OBJECT; | |
1858 | ||
1859 | if (info->shared | |
1860 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1861 | return false; | |
1862 | ||
1863 | s = bfd_make_section (abfd, ".rela.plt"); | |
1864 | if (s == NULL | |
1865 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
ff12f303 ILT |
1866 | | SEC_HAS_CONTENTS |
1867 | | SEC_IN_MEMORY | |
1868 | | SEC_LINKER_CREATED | |
1869 | | SEC_READONLY)) | |
297a4f1a ILT |
1870 | || ! bfd_set_section_alignment (abfd, s, 3)) |
1871 | return false; | |
1872 | ||
ff12f303 ILT |
1873 | /* We may or may not have created a .got section for this object, but |
1874 | we definitely havn't done the rest of the work. */ | |
1875 | ||
297a4f1a ILT |
1876 | if (!elf64_alpha_create_got_section (abfd, info)) |
1877 | return false; | |
1878 | ||
ff12f303 ILT |
1879 | s = bfd_make_section(abfd, ".rela.got"); |
1880 | if (s == NULL | |
1881 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1882 | | SEC_HAS_CONTENTS | |
1883 | | SEC_IN_MEMORY | |
1884 | | SEC_LINKER_CREATED | |
1885 | | SEC_READONLY)) | |
1886 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1887 | return false; | |
297a4f1a | 1888 | |
ff12f303 ILT |
1889 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1890 | dynobj's .got section. We don't do this in the linker script | |
1891 | because we don't want to define the symbol if we are not creating | |
1892 | a global offset table. */ | |
1893 | h = NULL; | |
1894 | if (!(_bfd_generic_link_add_one_symbol | |
1895 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1896 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1897 | false, get_elf_backend_data (abfd)->collect, | |
1898 | (struct bfd_link_hash_entry **) &h))) | |
1899 | return false; | |
1900 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1901 | h->type = STT_OBJECT; | |
297a4f1a | 1902 | |
ff12f303 ILT |
1903 | if (info->shared |
1904 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1905 | return false; | |
1906 | ||
1907 | elf_hash_table (info)->hgot = h; | |
1908 | ||
1909 | return true; | |
1910 | } | |
297a4f1a ILT |
1911 | \f |
1912 | /* Read ECOFF debugging information from a .mdebug section into a | |
1913 | ecoff_debug_info structure. */ | |
1914 | ||
1915 | static boolean | |
1916 | elf64_alpha_read_ecoff_info (abfd, section, debug) | |
1917 | bfd *abfd; | |
1918 | asection *section; | |
1919 | struct ecoff_debug_info *debug; | |
1920 | { | |
1921 | HDRR *symhdr; | |
1922 | const struct ecoff_debug_swap *swap; | |
1923 | char *ext_hdr = NULL; | |
1924 | ||
1925 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1926 | ||
1927 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); | |
1928 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1929 | goto error_return; | |
1930 | ||
1931 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
1932 | swap->external_hdr_size) | |
1933 | == false) | |
1934 | goto error_return; | |
1935 | ||
1936 | symhdr = &debug->symbolic_header; | |
1937 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1938 | ||
1939 | /* The symbolic header contains absolute file offsets and sizes to | |
1940 | read. */ | |
1941 | #define READ(ptr, offset, count, size, type) \ | |
1942 | if (symhdr->count == 0) \ | |
1943 | debug->ptr = NULL; \ | |
1944 | else \ | |
1945 | { \ | |
1946 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ | |
1947 | if (debug->ptr == NULL) \ | |
1948 | goto error_return; \ | |
1949 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1950 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
1951 | abfd) != size * symhdr->count)) \ | |
1952 | goto error_return; \ | |
1953 | } | |
1954 | ||
1955 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
1956 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1957 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1958 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1959 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1960 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1961 | union aux_ext *); | |
1962 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1963 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1964 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1965 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1966 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1967 | #undef READ | |
1968 | ||
1969 | debug->fdr = NULL; | |
1970 | debug->adjust = NULL; | |
1971 | ||
1972 | return true; | |
1973 | ||
1974 | error_return: | |
1975 | if (ext_hdr != NULL) | |
1976 | free (ext_hdr); | |
1977 | if (debug->line != NULL) | |
1978 | free (debug->line); | |
1979 | if (debug->external_dnr != NULL) | |
1980 | free (debug->external_dnr); | |
1981 | if (debug->external_pdr != NULL) | |
1982 | free (debug->external_pdr); | |
1983 | if (debug->external_sym != NULL) | |
1984 | free (debug->external_sym); | |
1985 | if (debug->external_opt != NULL) | |
1986 | free (debug->external_opt); | |
1987 | if (debug->external_aux != NULL) | |
1988 | free (debug->external_aux); | |
1989 | if (debug->ss != NULL) | |
1990 | free (debug->ss); | |
1991 | if (debug->ssext != NULL) | |
1992 | free (debug->ssext); | |
1993 | if (debug->external_fdr != NULL) | |
1994 | free (debug->external_fdr); | |
1995 | if (debug->external_rfd != NULL) | |
1996 | free (debug->external_rfd); | |
1997 | if (debug->external_ext != NULL) | |
1998 | free (debug->external_ext); | |
1999 | return false; | |
2000 | } | |
2001 | ||
2002 | /* Alpha ELF local labels start with '$'. */ | |
2003 | ||
2004 | static boolean | |
303e7257 | 2005 | elf64_alpha_is_local_label_name (abfd, name) |
297a4f1a | 2006 | bfd *abfd; |
303e7257 | 2007 | const char *name; |
297a4f1a | 2008 | { |
303e7257 | 2009 | return name[0] == '$'; |
297a4f1a ILT |
2010 | } |
2011 | ||
2012 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
2013 | routine in order to handle the ECOFF debugging information. We | |
2014 | still call this mips_elf_find_line because of the slot | |
2015 | find_line_info in elf_obj_tdata is declared that way. */ | |
2016 | ||
2017 | struct mips_elf_find_line | |
2018 | { | |
2019 | struct ecoff_debug_info d; | |
2020 | struct ecoff_find_line i; | |
2021 | }; | |
2022 | ||
2023 | static boolean | |
2024 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
2025 | functionname_ptr, line_ptr) | |
2026 | bfd *abfd; | |
2027 | asection *section; | |
2028 | asymbol **symbols; | |
2029 | bfd_vma offset; | |
2030 | const char **filename_ptr; | |
2031 | const char **functionname_ptr; | |
2032 | unsigned int *line_ptr; | |
2033 | { | |
2034 | asection *msec; | |
2035 | ||
2036 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
2037 | if (msec != NULL) | |
2038 | { | |
2039 | flagword origflags; | |
2040 | struct mips_elf_find_line *fi; | |
2041 | const struct ecoff_debug_swap * const swap = | |
2042 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2043 | ||
2044 | /* If we are called during a link, alpha_elf_final_link may have | |
2045 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
2046 | if appropriate (which it normally will be). */ | |
2047 | origflags = msec->flags; | |
2048 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
2049 | msec->flags |= SEC_HAS_CONTENTS; | |
2050 | ||
2051 | fi = elf_tdata (abfd)->find_line_info; | |
2052 | if (fi == NULL) | |
2053 | { | |
2054 | bfd_size_type external_fdr_size; | |
2055 | char *fraw_src; | |
2056 | char *fraw_end; | |
2057 | struct fdr *fdr_ptr; | |
2058 | ||
2059 | fi = ((struct mips_elf_find_line *) | |
2060 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); | |
2061 | if (fi == NULL) | |
2062 | { | |
2063 | msec->flags = origflags; | |
2064 | return false; | |
2065 | } | |
2066 | ||
2067 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
2068 | { | |
2069 | msec->flags = origflags; | |
2070 | return false; | |
2071 | } | |
2072 | ||
2073 | /* Swap in the FDR information. */ | |
2074 | fi->d.fdr = ((struct fdr *) | |
2075 | bfd_alloc (abfd, | |
2076 | (fi->d.symbolic_header.ifdMax * | |
2077 | sizeof (struct fdr)))); | |
2078 | if (fi->d.fdr == NULL) | |
2079 | { | |
2080 | msec->flags = origflags; | |
2081 | return false; | |
2082 | } | |
2083 | external_fdr_size = swap->external_fdr_size; | |
2084 | fdr_ptr = fi->d.fdr; | |
2085 | fraw_src = (char *) fi->d.external_fdr; | |
2086 | fraw_end = (fraw_src | |
2087 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2088 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2089 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2090 | ||
2091 | elf_tdata (abfd)->find_line_info = fi; | |
2092 | ||
2093 | /* Note that we don't bother to ever free this information. | |
2094 | find_nearest_line is either called all the time, as in | |
2095 | objdump -l, so the information should be saved, or it is | |
2096 | rarely called, as in ld error messages, so the memory | |
2097 | wasted is unimportant. Still, it would probably be a | |
2098 | good idea for free_cached_info to throw it away. */ | |
2099 | } | |
2100 | ||
2101 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2102 | &fi->i, filename_ptr, functionname_ptr, | |
2103 | line_ptr)) | |
2104 | { | |
2105 | msec->flags = origflags; | |
2106 | return true; | |
2107 | } | |
2108 | ||
2109 | msec->flags = origflags; | |
2110 | } | |
2111 | ||
2112 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2113 | ||
2114 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
2115 | filename_ptr, functionname_ptr, | |
2116 | line_ptr); | |
2117 | } | |
2118 | \f | |
2119 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
2120 | ||
2121 | struct extsym_info | |
2122 | { | |
2123 | bfd *abfd; | |
2124 | struct bfd_link_info *info; | |
2125 | struct ecoff_debug_info *debug; | |
2126 | const struct ecoff_debug_swap *swap; | |
2127 | boolean failed; | |
2128 | }; | |
2129 | ||
2130 | static boolean | |
2131 | elf64_alpha_output_extsym (h, data) | |
2132 | struct alpha_elf_link_hash_entry *h; | |
2133 | PTR data; | |
2134 | { | |
2135 | struct extsym_info *einfo = (struct extsym_info *) data; | |
2136 | boolean strip; | |
2137 | asection *sec, *output_section; | |
2138 | ||
2139 | if (h->root.indx == -2) | |
2140 | strip = false; | |
2141 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2142 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
2143 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
2144 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
2145 | strip = true; | |
2146 | else if (einfo->info->strip == strip_all | |
2147 | || (einfo->info->strip == strip_some | |
2148 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2149 | h->root.root.root.string, | |
2150 | false, false) == NULL)) | |
2151 | strip = true; | |
2152 | else | |
2153 | strip = false; | |
2154 | ||
2155 | if (strip) | |
2156 | return true; | |
2157 | ||
2158 | if (h->esym.ifd == -2) | |
2159 | { | |
2160 | h->esym.jmptbl = 0; | |
2161 | h->esym.cobol_main = 0; | |
2162 | h->esym.weakext = 0; | |
2163 | h->esym.reserved = 0; | |
2164 | h->esym.ifd = ifdNil; | |
2165 | h->esym.asym.value = 0; | |
2166 | h->esym.asym.st = stGlobal; | |
2167 | ||
2168 | if (h->root.root.type != bfd_link_hash_defined | |
2169 | && h->root.root.type != bfd_link_hash_defweak) | |
2170 | h->esym.asym.sc = scAbs; | |
2171 | else | |
2172 | { | |
2173 | const char *name; | |
2174 | ||
2175 | sec = h->root.root.u.def.section; | |
2176 | output_section = sec->output_section; | |
2177 | ||
2178 | /* When making a shared library and symbol h is the one from | |
2179 | the another shared library, OUTPUT_SECTION may be null. */ | |
2180 | if (output_section == NULL) | |
2181 | h->esym.asym.sc = scUndefined; | |
2182 | else | |
2183 | { | |
2184 | name = bfd_section_name (output_section->owner, output_section); | |
ff12f303 | 2185 | |
297a4f1a ILT |
2186 | if (strcmp (name, ".text") == 0) |
2187 | h->esym.asym.sc = scText; | |
2188 | else if (strcmp (name, ".data") == 0) | |
2189 | h->esym.asym.sc = scData; | |
2190 | else if (strcmp (name, ".sdata") == 0) | |
2191 | h->esym.asym.sc = scSData; | |
2192 | else if (strcmp (name, ".rodata") == 0 | |
2193 | || strcmp (name, ".rdata") == 0) | |
2194 | h->esym.asym.sc = scRData; | |
2195 | else if (strcmp (name, ".bss") == 0) | |
2196 | h->esym.asym.sc = scBss; | |
2197 | else if (strcmp (name, ".sbss") == 0) | |
2198 | h->esym.asym.sc = scSBss; | |
2199 | else if (strcmp (name, ".init") == 0) | |
2200 | h->esym.asym.sc = scInit; | |
2201 | else if (strcmp (name, ".fini") == 0) | |
2202 | h->esym.asym.sc = scFini; | |
2203 | else | |
2204 | h->esym.asym.sc = scAbs; | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | h->esym.asym.reserved = 0; | |
2209 | h->esym.asym.index = indexNil; | |
2210 | } | |
2211 | ||
2212 | if (h->root.root.type == bfd_link_hash_common) | |
2213 | h->esym.asym.value = h->root.root.u.c.size; | |
2214 | else if (h->root.root.type == bfd_link_hash_defined | |
2215 | || h->root.root.type == bfd_link_hash_defweak) | |
2216 | { | |
2217 | if (h->esym.asym.sc == scCommon) | |
2218 | h->esym.asym.sc = scBss; | |
2219 | else if (h->esym.asym.sc == scSCommon) | |
2220 | h->esym.asym.sc = scSBss; | |
2221 | ||
2222 | sec = h->root.root.u.def.section; | |
2223 | output_section = sec->output_section; | |
2224 | if (output_section != NULL) | |
2225 | h->esym.asym.value = (h->root.root.u.def.value | |
2226 | + sec->output_offset | |
2227 | + output_section->vma); | |
2228 | else | |
2229 | h->esym.asym.value = 0; | |
2230 | } | |
2231 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2232 | { | |
2233 | /* Set type and value for a symbol with a function stub. */ | |
2234 | h->esym.asym.st = stProc; | |
ff12f303 | 2235 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); |
297a4f1a | 2236 | if (sec == NULL) |
ff12f303 | 2237 | h->esym.asym.value = 0; |
297a4f1a | 2238 | else |
ff12f303 ILT |
2239 | { |
2240 | output_section = sec->output_section; | |
2241 | if (output_section != NULL) | |
2242 | h->esym.asym.value = (h->root.plt_offset | |
2243 | + sec->output_offset | |
2244 | + output_section->vma); | |
2245 | else | |
2246 | h->esym.asym.value = 0; | |
2247 | } | |
297a4f1a ILT |
2248 | #if 0 /* FIXME? */ |
2249 | h->esym.ifd = 0; | |
2250 | #endif | |
ff12f303 | 2251 | } |
297a4f1a ILT |
2252 | |
2253 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2254 | h->root.root.root.string, | |
2255 | &h->esym)) | |
2256 | { | |
2257 | einfo->failed = true; | |
2258 | return false; | |
2259 | } | |
2260 | ||
2261 | return true; | |
2262 | } | |
2263 | ||
2264 | /* FIXME: Create a runtime procedure table from the .mdebug section. | |
2265 | ||
2266 | static boolean | |
2267 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
2268 | PTR handle; | |
2269 | bfd *abfd; | |
2270 | struct bfd_link_info *info; | |
2271 | asection *s; | |
2272 | struct ecoff_debug_info *debug; | |
ff12f303 | 2273 | */ |
297a4f1a | 2274 | \f |
ff12f303 ILT |
2275 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
2276 | ||
297a4f1a ILT |
2277 | static boolean |
2278 | elf64_alpha_check_relocs (abfd, info, sec, relocs) | |
2279 | bfd *abfd; | |
2280 | struct bfd_link_info *info; | |
2281 | asection *sec; | |
2282 | const Elf_Internal_Rela *relocs; | |
2283 | { | |
2284 | bfd *dynobj; | |
297a4f1a | 2285 | asection *sreloc; |
ff12f303 | 2286 | const char *rel_sec_name; |
297a4f1a | 2287 | Elf_Internal_Shdr *symtab_hdr; |
ff12f303 ILT |
2288 | struct alpha_elf_link_hash_entry **sym_hashes; |
2289 | struct alpha_elf_got_entry **local_got_entries; | |
297a4f1a | 2290 | const Elf_Internal_Rela *rel, *relend; |
ff12f303 | 2291 | int got_created; |
297a4f1a ILT |
2292 | |
2293 | if (info->relocateable) | |
2294 | return true; | |
2295 | ||
297a4f1a | 2296 | dynobj = elf_hash_table(info)->dynobj; |
ff12f303 ILT |
2297 | if (dynobj == NULL) |
2298 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
2299 | ||
2300 | sreloc = NULL; | |
2301 | rel_sec_name = NULL; | |
2302 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2303 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
2304 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2305 | got_created = 0; | |
297a4f1a ILT |
2306 | |
2307 | relend = relocs + sec->reloc_count; | |
2308 | for (rel = relocs; rel < relend; ++rel) | |
2309 | { | |
ff12f303 | 2310 | unsigned long r_symndx, r_type; |
37d7888d | 2311 | struct alpha_elf_link_hash_entry *h; |
297a4f1a | 2312 | |
37d7888d | 2313 | r_symndx = ELF64_R_SYM (rel->r_info); |
297a4f1a ILT |
2314 | if (r_symndx < symtab_hdr->sh_info) |
2315 | h = NULL; | |
2316 | else | |
ff12f303 ILT |
2317 | { |
2318 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
69842d08 RH |
2319 | |
2320 | while (h->root.root.type == bfd_link_hash_indirect | |
2321 | || h->root.root.type == bfd_link_hash_warning) | |
2322 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2323 | ||
ff12f303 ILT |
2324 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; |
2325 | } | |
2326 | r_type = ELF64_R_TYPE (rel->r_info); | |
297a4f1a | 2327 | |
ff12f303 | 2328 | switch (r_type) |
297a4f1a ILT |
2329 | { |
2330 | case R_ALPHA_LITERAL: | |
ff12f303 ILT |
2331 | { |
2332 | struct alpha_elf_got_entry *gotent; | |
2333 | int flags = 0; | |
297a4f1a | 2334 | |
ff12f303 ILT |
2335 | if (h) |
2336 | { | |
2337 | /* Search for and possibly create a got entry. */ | |
2338 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2339 | if (gotent->gotobj == abfd && | |
2340 | gotent->addend == rel->r_addend) | |
2341 | break; | |
2342 | ||
2343 | if (!gotent) | |
2344 | { | |
2345 | gotent = ((struct alpha_elf_got_entry *) | |
2346 | bfd_alloc (abfd, | |
2347 | sizeof (struct alpha_elf_got_entry))); | |
2348 | if (!gotent) | |
2349 | return false; | |
297a4f1a | 2350 | |
ff12f303 ILT |
2351 | gotent->gotobj = abfd; |
2352 | gotent->addend = rel->r_addend; | |
2353 | gotent->got_offset = -1; | |
2354 | gotent->flags = 0; | |
69842d08 | 2355 | gotent->use_count = 1; |
297a4f1a | 2356 | |
ff12f303 ILT |
2357 | gotent->next = h->got_entries; |
2358 | h->got_entries = gotent; | |
37d7888d | 2359 | |
ff12f303 ILT |
2360 | alpha_elf_tdata (abfd)->total_got_entries++; |
2361 | } | |
69842d08 RH |
2362 | else |
2363 | gotent->use_count += 1; | |
ff12f303 ILT |
2364 | } |
2365 | else | |
2366 | { | |
2367 | /* This is a local .got entry -- record for merge. */ | |
2368 | if (!local_got_entries) | |
2369 | { | |
2370 | size_t size; | |
2371 | size = (symtab_hdr->sh_info | |
2372 | * sizeof (struct alpha_elf_got_entry *)); | |
2373 | ||
2374 | local_got_entries = ((struct alpha_elf_got_entry **) | |
2375 | bfd_alloc (abfd, size)); | |
2376 | if (!local_got_entries) | |
2377 | return false; | |
2378 | ||
2379 | memset (local_got_entries, 0, size); | |
2380 | alpha_elf_tdata (abfd)->local_got_entries = | |
2381 | local_got_entries; | |
2382 | } | |
2383 | ||
2384 | for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
2385 | gotent != NULL && gotent->addend != rel->r_addend; | |
2386 | gotent = gotent->next) | |
2387 | continue; | |
2388 | if (!gotent) | |
2389 | { | |
2390 | gotent = ((struct alpha_elf_got_entry *) | |
2391 | bfd_alloc (abfd, | |
2392 | sizeof (struct alpha_elf_got_entry))); | |
2393 | if (!gotent) | |
2394 | return false; | |
2395 | ||
2396 | gotent->gotobj = abfd; | |
2397 | gotent->addend = rel->r_addend; | |
2398 | gotent->got_offset = -1; | |
2399 | gotent->flags = 0; | |
69842d08 | 2400 | gotent->use_count = 1; |
ff12f303 ILT |
2401 | |
2402 | gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
2403 | local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent; | |
2404 | ||
2405 | alpha_elf_tdata(abfd)->total_got_entries++; | |
2406 | alpha_elf_tdata(abfd)->n_local_got_entries++; | |
2407 | } | |
69842d08 RH |
2408 | else |
2409 | gotent->use_count += 1; | |
ff12f303 ILT |
2410 | } |
2411 | ||
2412 | /* Remember how this literal is used from its LITUSEs. | |
2413 | This will be important when it comes to decide if we can | |
2414 | create a .plt entry for a function symbol. */ | |
2415 | if (rel+1 < relend | |
2416 | && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE) | |
2417 | { | |
2418 | do | |
2419 | { | |
2420 | ++rel; | |
2421 | if (rel->r_addend >= 1 && rel->r_addend <= 3) | |
2422 | flags |= 1 << rel->r_addend; | |
2423 | } | |
2424 | while (rel+1 < relend && | |
2425 | ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE); | |
2426 | } | |
2427 | else | |
2428 | { | |
2429 | /* No LITUSEs -- presumably the address is not being | |
2430 | loaded for nothing. */ | |
2431 | flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
2432 | } | |
2433 | ||
2434 | gotent->flags |= flags; | |
2435 | if (h) | |
2436 | { | |
2437 | /* Make a guess as to whether a .plt entry will be needed. */ | |
2438 | if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC) | |
2439 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2440 | else | |
2441 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2442 | } | |
2443 | } | |
2444 | /* FALLTHRU */ | |
2445 | ||
2446 | case R_ALPHA_GPDISP: | |
2447 | case R_ALPHA_GPREL32: | |
69842d08 RH |
2448 | case R_ALPHA_GPRELHIGH: |
2449 | case R_ALPHA_GPRELLOW: | |
ff12f303 ILT |
2450 | /* We don't actually use the .got here, but the sections must |
2451 | be created before the linker maps input sections to output | |
2452 | sections. */ | |
2453 | if (!got_created) | |
297a4f1a | 2454 | { |
ff12f303 ILT |
2455 | if (!elf64_alpha_create_got_section (abfd, info)) |
2456 | return false; | |
2457 | ||
2458 | /* Make sure the object's gotobj is set to itself so | |
2459 | that we default to every object with its own .got. | |
2460 | We'll merge .gots later once we've collected each | |
2461 | object's info. */ | |
2462 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
2463 | ||
2464 | got_created = 1; | |
2465 | } | |
2466 | break; | |
2467 | ||
2468 | case R_ALPHA_SREL16: | |
2469 | case R_ALPHA_SREL32: | |
2470 | case R_ALPHA_SREL64: | |
2471 | if (h == NULL) | |
2472 | break; | |
2473 | /* FALLTHRU */ | |
2474 | ||
2475 | case R_ALPHA_REFLONG: | |
2476 | case R_ALPHA_REFQUAD: | |
2477 | if (rel_sec_name == NULL) | |
2478 | { | |
2479 | rel_sec_name = (bfd_elf_string_from_elf_section | |
2480 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2481 | elf_section_data(sec)->rel_hdr.sh_name)); | |
2482 | if (rel_sec_name == NULL) | |
2483 | return false; | |
2484 | ||
2485 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
2486 | && strcmp (bfd_get_section_name (abfd, sec), | |
2487 | rel_sec_name+5) == 0); | |
2488 | } | |
2489 | ||
2490 | /* We need to create the section here now whether we eventually | |
2491 | use it or not so that it gets mapped to an output section by | |
2492 | the linker. If not used, we'll kill it in | |
2493 | size_dynamic_sections. */ | |
2494 | if (sreloc == NULL) | |
2495 | { | |
2496 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
2497 | if (sreloc == NULL) | |
37d7888d | 2498 | { |
ff12f303 ILT |
2499 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
2500 | if (sreloc == NULL | |
2501 | || !bfd_set_section_flags (dynobj, sreloc, | |
2502 | (SEC_ALLOC|SEC_LOAD | |
2503 | | SEC_HAS_CONTENTS | |
2504 | | SEC_IN_MEMORY | |
2505 | | SEC_LINKER_CREATED | |
2506 | | SEC_READONLY)) | |
2507 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
2508 | return false; | |
37d7888d | 2509 | } |
297a4f1a ILT |
2510 | } |
2511 | ||
ff12f303 | 2512 | if (h) |
297a4f1a | 2513 | { |
ff12f303 ILT |
2514 | /* Since we havn't seen all of the input symbols yet, we |
2515 | don't know whether we'll actually need a dynamic relocation | |
2516 | entry for this reloc. So make a record of it. Once we | |
2517 | find out if this thing needs dynamic relocation we'll | |
2518 | expand the relocation sections by the appropriate amount. */ | |
297a4f1a | 2519 | |
ff12f303 ILT |
2520 | struct alpha_elf_reloc_entry *rent; |
2521 | ||
2522 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
2523 | if (rent->rtype == r_type && rent->srel == sreloc) | |
2524 | break; | |
2525 | ||
2526 | if (!rent) | |
2527 | { | |
2528 | rent = ((struct alpha_elf_reloc_entry *) | |
2529 | bfd_alloc (abfd, | |
2530 | sizeof (struct alpha_elf_reloc_entry))); | |
2531 | if (!rent) | |
2532 | return false; | |
2533 | ||
2534 | rent->srel = sreloc; | |
2535 | rent->rtype = r_type; | |
2536 | rent->count = 1; | |
297a4f1a | 2537 | |
ff12f303 ILT |
2538 | rent->next = h->reloc_entries; |
2539 | h->reloc_entries = rent; | |
2540 | } | |
2541 | else | |
2542 | rent->count++; | |
297a4f1a | 2543 | } |
ff12f303 ILT |
2544 | else if (info->shared) |
2545 | { | |
2546 | /* If this is a shared library, we need a RELATIVE reloc. */ | |
2547 | sreloc->_raw_size += sizeof (Elf64_External_Rela); | |
2548 | } | |
2549 | break; | |
2550 | } | |
2551 | } | |
2552 | ||
2553 | return true; | |
2554 | } | |
2555 | ||
2556 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2557 | regular object. The current definition is in some section of the | |
2558 | dynamic object, but we're not including those sections. We have to | |
2559 | change the definition to something the rest of the link can | |
2560 | understand. */ | |
2561 | ||
2562 | static boolean | |
2563 | elf64_alpha_adjust_dynamic_symbol (info, h) | |
2564 | struct bfd_link_info *info; | |
2565 | struct elf_link_hash_entry *h; | |
2566 | { | |
2567 | bfd *dynobj; | |
2568 | asection *s; | |
2569 | struct alpha_elf_link_hash_entry *ah; | |
2570 | ||
2571 | dynobj = elf_hash_table(info)->dynobj; | |
2572 | ah = (struct alpha_elf_link_hash_entry *)h; | |
2573 | ||
2574 | /* Now that we've seen all of the input symbols, finalize our decision | |
2575 | about whether this symbol should get a .plt entry. */ | |
2576 | ||
2577 | if (h->root.type != bfd_link_hash_undefweak | |
2578 | && alpha_elf_dynamic_symbol_p (h, info) | |
3a13dd8f RH |
2579 | && ((h->type == STT_FUNC |
2580 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
ff12f303 ILT |
2581 | || (h->type == STT_NOTYPE |
2582 | && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
2583 | /* Don't prevent otherwise valid programs from linking by attempting | |
2584 | to create a new .got entry somewhere. A Correct Solution would be | |
2585 | to add a new .got section to a new object file and let it be merged | |
2586 | somewhere later. But for now don't bother. */ | |
2587 | && ah->got_entries) | |
2588 | { | |
2589 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2590 | ||
2591 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
2592 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2593 | return false; | |
2594 | ||
2595 | /* The first bit of the .plt is reserved. */ | |
2596 | if (s->_raw_size == 0) | |
2597 | s->_raw_size = PLT_HEADER_SIZE; | |
2598 | ||
2599 | h->plt_offset = s->_raw_size; | |
2600 | s->_raw_size += PLT_ENTRY_SIZE; | |
2601 | ||
2602 | /* If this symbol is not defined in a regular file, and we are not | |
2603 | generating a shared library, then set the symbol to the location | |
2604 | in the .plt. This is required to make function pointers compare | |
2605 | equal between the normal executable and the shared library. */ | |
2606 | if (!info->shared) | |
2607 | { | |
2608 | h->root.u.def.section = s; | |
2609 | h->root.u.def.value = h->plt_offset; | |
2610 | } | |
2611 | ||
2612 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
2613 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2614 | BFD_ASSERT (s != NULL); | |
2615 | s->_raw_size += sizeof (Elf64_External_Rela); | |
2616 | ||
2617 | return true; | |
2618 | } | |
2619 | else | |
2620 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2621 | ||
2622 | /* If this is a weak symbol, and there is a real definition, the | |
2623 | processor independent code will have arranged for us to see the | |
2624 | real definition first, and we can just use the same value. */ | |
2625 | if (h->weakdef != NULL) | |
2626 | { | |
2627 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
2628 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
2629 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
2630 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
2631 | return true; | |
2632 | } | |
2633 | ||
2634 | /* This is a reference to a symbol defined by a dynamic object which | |
2635 | is not a function. The Alpha, since it uses .got entries for all | |
2636 | symbols even in regular objects, does not need the hackery of a | |
2637 | .dynbss section and COPY dynamic relocations. */ | |
2638 | ||
2639 | return true; | |
2640 | } | |
2641 | ||
69842d08 RH |
2642 | /* Symbol versioning can create new symbols, and make our old symbols |
2643 | indirect to the new ones. Consolidate the got and reloc information | |
2644 | in these situations. */ | |
2645 | ||
2646 | static boolean | |
2647 | elf64_alpha_merge_ind_symbols (hi, dummy) | |
2648 | struct alpha_elf_link_hash_entry *hi; | |
2649 | PTR dummy; | |
2650 | { | |
2651 | struct alpha_elf_link_hash_entry *hs; | |
2652 | ||
2653 | if (hi->root.root.type != bfd_link_hash_indirect) | |
2654 | return true; | |
2655 | hs = hi; | |
2656 | do { | |
2657 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2658 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
2659 | ||
2660 | /* Merge the flags. Whee. */ | |
2661 | ||
2662 | hs->flags |= hi->flags; | |
2663 | ||
2664 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2665 | doing so, since we don't need it anymore. */ | |
2666 | ||
2667 | if (hs->got_entries == NULL) | |
2668 | hs->got_entries = hi->got_entries; | |
2669 | else | |
2670 | { | |
2671 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2672 | ||
2673 | gsh = hs->got_entries; | |
2674 | for (gi = hi->got_entries; gi ; gi = gin) | |
2675 | { | |
2676 | gin = gi->next; | |
2677 | for (gs = gsh; gs ; gs = gs->next) | |
2678 | if (gi->gotobj == gs->gotobj && gi->addend == gs->addend) | |
2679 | goto got_found; | |
2680 | gi->next = hs->got_entries; | |
2681 | hs->got_entries = gi; | |
2682 | got_found:; | |
2683 | } | |
2684 | } | |
2685 | hi->got_entries = NULL; | |
2686 | ||
2687 | /* And similar for the reloc entries. */ | |
2688 | ||
2689 | if (hs->reloc_entries == NULL) | |
2690 | hs->reloc_entries = hi->reloc_entries; | |
2691 | else | |
2692 | { | |
2693 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2694 | ||
2695 | rsh = hs->reloc_entries; | |
2696 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2697 | { | |
2698 | rin = ri->next; | |
2699 | for (rs = rsh; rs ; rs = rs->next) | |
2700 | if (ri->rtype == rs->rtype) | |
2701 | { | |
2702 | rs->count += ri->count; | |
2703 | goto found_reloc; | |
2704 | } | |
2705 | ri->next = hs->reloc_entries; | |
2706 | hs->reloc_entries = ri; | |
2707 | found_reloc:; | |
2708 | } | |
2709 | } | |
2710 | hi->reloc_entries = NULL; | |
2711 | ||
2712 | return true; | |
2713 | } | |
2714 | ||
ff12f303 ILT |
2715 | /* Is it possible to merge two object file's .got tables? */ |
2716 | ||
2717 | static boolean | |
2718 | elf64_alpha_can_merge_gots (a, b) | |
2719 | bfd *a, *b; | |
2720 | { | |
2721 | int total = alpha_elf_tdata (a)->total_got_entries; | |
2722 | ||
2723 | /* Trivial quick fallout test. */ | |
2724 | if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES) | |
2725 | return true; | |
2726 | ||
2727 | /* By their nature, local .got entries cannot be merged. */ | |
2728 | if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES) | |
2729 | return false; | |
2730 | ||
2731 | /* Failing the common trivial comparison, we must effectively | |
2732 | perform the merge. Not actually performing the merge means that | |
2733 | we don't have to store undo information in case we fail. */ | |
2734 | { | |
2735 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b); | |
2736 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr; | |
2737 | int i, n; | |
2738 | ||
2739 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; | |
2740 | for (i = 0; i < n; ++i) | |
2741 | { | |
2742 | struct alpha_elf_got_entry *ae, *be; | |
69842d08 RH |
2743 | struct alpha_elf_link_hash_entry *h; |
2744 | ||
2745 | h = hashes[i]; | |
2746 | while (h->root.root.type == bfd_link_hash_indirect | |
2747 | || h->root.root.type == bfd_link_hash_warning) | |
2748 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2749 | ||
2750 | for (be = h->got_entries; be ; be = be->next) | |
ff12f303 | 2751 | { |
69842d08 RH |
2752 | if (be->use_count == 0) |
2753 | continue; | |
ff12f303 ILT |
2754 | if (be->gotobj != b) |
2755 | continue; | |
2756 | ||
69842d08 | 2757 | for (ae = h->got_entries; ae ; ae = ae->next) |
ff12f303 ILT |
2758 | if (ae->gotobj == a && ae->addend == be->addend) |
2759 | goto global_found; | |
2760 | ||
2761 | if (++total > MAX_GOT_ENTRIES) | |
2762 | return false; | |
2763 | global_found:; | |
2764 | } | |
2765 | } | |
2766 | } | |
2767 | ||
2768 | return true; | |
2769 | } | |
2770 | ||
2771 | /* Actually merge two .got tables. */ | |
2772 | ||
2773 | static void | |
2774 | elf64_alpha_merge_gots (a, b) | |
2775 | bfd *a, *b; | |
2776 | { | |
2777 | int total = alpha_elf_tdata(a)->total_got_entries; | |
2778 | ||
2779 | /* Remember local expansion. */ | |
2780 | { | |
2781 | int e = alpha_elf_tdata(b)->n_local_got_entries; | |
2782 | total += e; | |
2783 | alpha_elf_tdata(a)->n_local_got_entries += e; | |
2784 | } | |
2785 | ||
2786 | /* Let the local .got entries know they are part of a new subsegment. */ | |
2787 | { | |
2788 | struct alpha_elf_got_entry **local_got_entries; | |
2789 | local_got_entries = alpha_elf_tdata(b)->local_got_entries; | |
2790 | if (local_got_entries) | |
2791 | { | |
2792 | int i, n; | |
2793 | ||
2794 | n = elf_tdata(b)->symtab_hdr.sh_info; | |
2795 | for (i = 0; i < n; ++i) | |
2796 | { | |
2797 | struct alpha_elf_got_entry *gotent; | |
2798 | for (gotent = local_got_entries[i]; gotent; gotent = gotent->next) | |
2799 | gotent->gotobj = a; | |
2800 | } | |
2801 | } | |
2802 | } | |
2803 | ||
2804 | /* Merge the global .got entries. */ | |
2805 | { | |
2806 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b); | |
2807 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr; | |
2808 | int i, n; | |
2809 | ||
2810 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; | |
2811 | for (i = 0; i < n; ++i) | |
2812 | { | |
2813 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
69842d08 RH |
2814 | struct alpha_elf_link_hash_entry *h; |
2815 | ||
2816 | h = hashes[i]; | |
2817 | while (h->root.root.type == bfd_link_hash_indirect | |
2818 | || h->root.root.type == bfd_link_hash_warning) | |
2819 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2820 | ||
2821 | start = &h->got_entries; | |
ff12f303 ILT |
2822 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) |
2823 | { | |
69842d08 RH |
2824 | if (be->use_count == 0) |
2825 | { | |
2826 | *pbe = be->next; | |
2827 | continue; | |
2828 | } | |
ff12f303 ILT |
2829 | if (be->gotobj != b) |
2830 | continue; | |
297a4f1a | 2831 | |
ff12f303 ILT |
2832 | for (ae = *start; ae ; ae = ae->next) |
2833 | if (ae->gotobj == a && ae->addend == be->addend) | |
297a4f1a | 2834 | { |
3a13dd8f | 2835 | ae->flags |= be->flags; |
ff12f303 ILT |
2836 | *pbe = be->next; |
2837 | goto global_found; | |
297a4f1a | 2838 | } |
ff12f303 ILT |
2839 | be->gotobj = a; |
2840 | total += 1; | |
297a4f1a | 2841 | |
ff12f303 ILT |
2842 | global_found:; |
2843 | } | |
2844 | } | |
2845 | } | |
297a4f1a | 2846 | |
ff12f303 ILT |
2847 | alpha_elf_tdata(a)->total_got_entries = total; |
2848 | alpha_elf_tdata(b)->gotobj = a; | |
2849 | } | |
297a4f1a | 2850 | |
ff12f303 | 2851 | /* Calculate the offsets for the got entries. */ |
297a4f1a | 2852 | |
ff12f303 ILT |
2853 | static boolean |
2854 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) | |
2855 | struct alpha_elf_link_hash_entry *h; | |
2856 | PTR arg; | |
2857 | { | |
2858 | struct alpha_elf_got_entry *gotent; | |
297a4f1a | 2859 | |
ff12f303 | 2860 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
69842d08 RH |
2861 | if (gotent->use_count > 0) |
2862 | { | |
2863 | bfd_size_type *plge | |
2864 | = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; | |
2865 | ||
2866 | gotent->got_offset = *plge; | |
2867 | *plge += 8; | |
2868 | } | |
297a4f1a | 2869 | |
ff12f303 ILT |
2870 | return true; |
2871 | } | |
297a4f1a | 2872 | |
ff12f303 ILT |
2873 | static void |
2874 | elf64_alpha_calc_got_offsets (info) | |
2875 | struct bfd_link_info *info; | |
2876 | { | |
2877 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
297a4f1a | 2878 | |
ff12f303 ILT |
2879 | /* First, zero out the .got sizes, as we may be recalculating the |
2880 | .got after optimizing it. */ | |
2881 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2882 | alpha_elf_tdata(i)->got->_raw_size = 0; | |
297a4f1a | 2883 | |
ff12f303 ILT |
2884 | /* Next, fill in the offsets for all the global entries. */ |
2885 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2886 | elf64_alpha_calc_got_offsets_for_symbol, | |
2887 | NULL); | |
297a4f1a | 2888 | |
ff12f303 ILT |
2889 | /* Finally, fill in the offsets for the local entries. */ |
2890 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2891 | { | |
2892 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; | |
2893 | bfd *j; | |
297a4f1a | 2894 | |
ff12f303 ILT |
2895 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2896 | { | |
2897 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2898 | int k, n; | |
297a4f1a | 2899 | |
ff12f303 ILT |
2900 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2901 | if (!local_got_entries) | |
2902 | continue; | |
2903 | ||
2904 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
2905 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
986c3691 RH |
2906 | if (gotent->use_count > 0) |
2907 | { | |
2908 | gotent->got_offset = got_offset; | |
2909 | got_offset += 8; | |
2910 | } | |
297a4f1a | 2911 | } |
ff12f303 ILT |
2912 | |
2913 | alpha_elf_tdata(i)->got->_raw_size = got_offset; | |
986c3691 | 2914 | alpha_elf_tdata(i)->got->_cooked_size = got_offset; |
297a4f1a | 2915 | } |
ff12f303 | 2916 | } |
297a4f1a | 2917 | |
ff12f303 ILT |
2918 | /* Remove a section from the output BFD. */ |
2919 | ||
2920 | static void | |
2921 | elf64_alpha_strip_section_from_output (s) | |
2922 | asection *s; | |
2923 | { | |
2924 | asection **spp; | |
2925 | ||
2926 | for (spp = &s->output_section->owner->sections; | |
2927 | *spp != s->output_section; | |
2928 | spp = &(*spp)->next) | |
2929 | continue; | |
2930 | *spp = s->output_section->next; | |
2931 | --s->output_section->owner->section_count; | |
297a4f1a ILT |
2932 | } |
2933 | ||
ff12f303 | 2934 | /* Constructs the gots. */ |
297a4f1a ILT |
2935 | |
2936 | static boolean | |
69842d08 | 2937 | elf64_alpha_size_got_sections (output_bfd, info) |
ff12f303 | 2938 | bfd *output_bfd; |
297a4f1a | 2939 | struct bfd_link_info *info; |
297a4f1a | 2940 | { |
ff12f303 ILT |
2941 | bfd *i, *got_list, *cur_got_obj, **cur_got_tail; |
2942 | int ngots; | |
297a4f1a | 2943 | |
ff12f303 ILT |
2944 | ngots = 0; |
2945 | got_list = NULL; | |
2946 | cur_got_obj = NULL; | |
2947 | cur_got_tail = NULL; | |
2948 | for (i = info->input_bfds; i ; i = i->link_next) | |
297a4f1a | 2949 | { |
ff12f303 ILT |
2950 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2951 | ||
2952 | /* Don't play if there is no .got for this input file. */ | |
2953 | if (this_got == NULL) | |
2954 | continue; | |
2955 | ||
2956 | if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES) | |
297a4f1a | 2957 | { |
ff12f303 ILT |
2958 | /* Yikes! A single object file has too many entries. */ |
2959 | (*_bfd_error_handler) | |
53d3ce37 | 2960 | (_("%s: .got subsegment exceeds 64K (size %d)"), |
ff12f303 ILT |
2961 | bfd_get_filename(i), |
2962 | alpha_elf_tdata(this_got)->total_got_entries * 8); | |
2963 | return false; | |
297a4f1a ILT |
2964 | } |
2965 | ||
ff12f303 ILT |
2966 | if (cur_got_obj) |
2967 | { | |
211b0be8 RH |
2968 | if (this_got == cur_got_obj) |
2969 | ; /* Some previous pass merged us already. */ | |
2970 | else if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
ff12f303 ILT |
2971 | { |
2972 | elf64_alpha_merge_gots (cur_got_obj, i); | |
2973 | *cur_got_tail = i; | |
2974 | } | |
2975 | else | |
2976 | { | |
2977 | if (++ngots == 2) | |
2978 | { | |
2979 | (*info->callbacks->warning) | |
53d3ce37 | 2980 | (info, _("using multiple gp values"), (char *) NULL, |
ff12f303 ILT |
2981 | output_bfd, (asection *) NULL, (bfd_vma) 0); |
2982 | } | |
2983 | *cur_got_tail = NULL; | |
2984 | alpha_elf_tdata(cur_got_obj)->got_link_next = got_list; | |
2985 | got_list = cur_got_obj; | |
2986 | cur_got_obj = i; | |
2987 | } | |
2988 | } | |
2989 | else | |
2990 | { | |
2991 | ++ngots; | |
2992 | cur_got_obj = i; | |
2993 | } | |
2994 | cur_got_tail = &alpha_elf_tdata(i)->in_got_link_next; | |
2995 | } | |
297a4f1a | 2996 | |
ff12f303 ILT |
2997 | if (cur_got_obj) |
2998 | alpha_elf_tdata (cur_got_obj)->got_link_next = got_list; | |
69842d08 | 2999 | alpha_elf_hash_table (info)->got_list = cur_got_obj; |
297a4f1a | 3000 | |
ff12f303 ILT |
3001 | /* Once the gots have been merged, fill in the got offsets for everything |
3002 | therein. */ | |
3003 | elf64_alpha_calc_got_offsets (info); | |
297a4f1a | 3004 | |
69842d08 RH |
3005 | return true; |
3006 | } | |
3007 | ||
3008 | static boolean | |
3009 | elf64_alpha_always_size_sections (output_bfd, info) | |
3010 | bfd *output_bfd; | |
3011 | struct bfd_link_info *info; | |
3012 | { | |
3013 | bfd *i; | |
3014 | ||
3015 | if (info->relocateable) | |
3016 | return true; | |
3017 | ||
3018 | /* First, take care of the indirect symbols created by versioning. */ | |
3019 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3020 | elf64_alpha_merge_ind_symbols, | |
3021 | NULL); | |
3022 | ||
3023 | if (!elf64_alpha_size_got_sections (output_bfd, info)) | |
3024 | return false; | |
3025 | ||
ff12f303 | 3026 | /* Allocate space for all of the .got subsections. */ |
69842d08 RH |
3027 | i = alpha_elf_hash_table (info)->got_list; |
3028 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
ff12f303 ILT |
3029 | { |
3030 | asection *s = alpha_elf_tdata(i)->got; | |
3031 | if (s->_raw_size > 0) | |
297a4f1a | 3032 | { |
ff12f303 ILT |
3033 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); |
3034 | if (s->contents == NULL) | |
3035 | return false; | |
297a4f1a | 3036 | } |
ff12f303 | 3037 | } |
297a4f1a | 3038 | |
ff12f303 ILT |
3039 | return true; |
3040 | } | |
297a4f1a | 3041 | |
ff12f303 | 3042 | /* Work out the sizes of the dynamic relocation entries. */ |
297a4f1a | 3043 | |
ff12f303 ILT |
3044 | static boolean |
3045 | elf64_alpha_calc_dynrel_sizes (h, info) | |
3046 | struct alpha_elf_link_hash_entry *h; | |
3047 | struct bfd_link_info *info; | |
3048 | { | |
3049 | /* If the symbol was defined as a common symbol in a regular object | |
3050 | file, and there was no definition in any dynamic object, then the | |
3051 | linker will have allocated space for the symbol in a common | |
3052 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
3053 | set. This is done for dynamic symbols in | |
3054 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
3055 | symbols, somehow. */ | |
3056 | if (((h->root.elf_link_hash_flags | |
3057 | & (ELF_LINK_HASH_DEF_REGULAR | |
3058 | | ELF_LINK_HASH_REF_REGULAR | |
3059 | | ELF_LINK_HASH_DEF_DYNAMIC)) | |
3060 | == ELF_LINK_HASH_REF_REGULAR) | |
3061 | && (h->root.root.type == bfd_link_hash_defined | |
3062 | || h->root.root.type == bfd_link_hash_defweak) | |
3063 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
3064 | { | |
3065 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
297a4f1a ILT |
3066 | } |
3067 | ||
ff12f303 | 3068 | /* If the symbol is dynamic, we'll need all the relocations in their |
6a587c4a RH |
3069 | natural form. If it has been forced local, we'll need the same |
3070 | number of RELATIVE relocations. */ | |
69842d08 | 3071 | if (alpha_elf_dynamic_symbol_p (&h->root, info) |
6a587c4a | 3072 | || (info->shared && h->root.dynindx == -1)) |
297a4f1a | 3073 | { |
ff12f303 ILT |
3074 | struct alpha_elf_reloc_entry *relent; |
3075 | ||
3076 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3077 | { | |
3078 | relent->srel->_raw_size += | |
3079 | sizeof (Elf64_External_Rela) * relent->count; | |
3080 | } | |
3081 | ||
3082 | /* Only add a .rela.got entry if we're not using a .plt entry. */ | |
3083 | if (h->root.plt_offset == MINUS_ONE) | |
3084 | { | |
3085 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
3086 | struct alpha_elf_got_entry *gotent; | |
3087 | bfd_size_type count = 0; | |
3088 | asection *srel; | |
3089 | ||
3090 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
3091 | count++; | |
3092 | if (count > 0) | |
3093 | { | |
3094 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3095 | BFD_ASSERT (srel != NULL); | |
3096 | srel->_raw_size += sizeof (Elf64_External_Rela) * count; | |
3097 | } | |
3098 | } | |
297a4f1a | 3099 | } |
ff12f303 ILT |
3100 | /* Otherwise, shared objects require RELATIVE relocs for all REFQUAD |
3101 | and REFLONG relocations. */ | |
3102 | else if (info->shared) | |
3103 | { | |
3104 | struct alpha_elf_reloc_entry *relent; | |
297a4f1a | 3105 | |
ff12f303 ILT |
3106 | for (relent = h->reloc_entries; relent; relent = relent->next) |
3107 | if (relent->rtype == R_ALPHA_REFLONG | |
3108 | || relent->rtype == R_ALPHA_REFQUAD) | |
3109 | { | |
3110 | relent->srel->_raw_size += | |
3111 | sizeof(Elf64_External_Rela) * relent->count; | |
3112 | } | |
3113 | } | |
297a4f1a ILT |
3114 | |
3115 | return true; | |
3116 | } | |
3117 | ||
3118 | /* Set the sizes of the dynamic sections. */ | |
3119 | ||
3120 | static boolean | |
3121 | elf64_alpha_size_dynamic_sections (output_bfd, info) | |
3122 | bfd *output_bfd; | |
3123 | struct bfd_link_info *info; | |
3124 | { | |
3125 | bfd *dynobj; | |
3126 | asection *s; | |
3127 | boolean reltext; | |
3128 | boolean relplt; | |
3129 | ||
3130 | dynobj = elf_hash_table(info)->dynobj; | |
3131 | BFD_ASSERT(dynobj != NULL); | |
3132 | ||
ff12f303 | 3133 | if (elf_hash_table (info)->dynamic_sections_created) |
297a4f1a ILT |
3134 | { |
3135 | /* Set the contents of the .interp section to the interpreter. */ | |
3136 | if (!info->shared) | |
3137 | { | |
ff12f303 ILT |
3138 | s = bfd_get_section_by_name (dynobj, ".interp"); |
3139 | BFD_ASSERT (s != NULL); | |
297a4f1a | 3140 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
ff12f303 ILT |
3141 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3142 | } | |
3143 | ||
3144 | /* Now that we've seen all of the input files, we can decide which | |
3145 | symbols need dynamic relocation entries and which don't. We've | |
3146 | collected information in check_relocs that we can now apply to | |
3147 | size the dynamic relocation sections. */ | |
3148 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3149 | elf64_alpha_calc_dynrel_sizes, | |
3150 | info); | |
3151 | ||
3152 | /* When building shared libraries, each local .got entry needs a | |
3153 | RELATIVE reloc. */ | |
3154 | if (info->shared) | |
3155 | { | |
3156 | bfd *i; | |
3157 | asection *srel; | |
3158 | bfd_size_type count; | |
3159 | ||
3160 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3161 | BFD_ASSERT (srel != NULL); | |
3162 | ||
3163 | for (i = alpha_elf_hash_table(info)->got_list, count = 0; | |
3164 | i != NULL; | |
3165 | i = alpha_elf_tdata(i)->got_link_next) | |
3166 | count += alpha_elf_tdata(i)->n_local_got_entries; | |
3167 | ||
3168 | srel->_raw_size += count * sizeof(Elf64_External_Rela); | |
297a4f1a ILT |
3169 | } |
3170 | } | |
ff12f303 | 3171 | /* else we're not dynamic and by definition we don't need such things. */ |
297a4f1a ILT |
3172 | |
3173 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3174 | determined the sizes of the various dynamic sections. Allocate | |
3175 | memory for them. */ | |
3176 | reltext = false; | |
3177 | relplt = false; | |
3178 | for (s = dynobj->sections; s != NULL; s = s->next) | |
3179 | { | |
3180 | const char *name; | |
3181 | boolean strip; | |
3182 | ||
ff12f303 | 3183 | if (!(s->flags & SEC_LINKER_CREATED)) |
297a4f1a ILT |
3184 | continue; |
3185 | ||
3186 | /* It's OK to base decisions on the section name, because none | |
3187 | of the dynobj section names depend upon the input files. */ | |
ff12f303 | 3188 | name = bfd_get_section_name (dynobj, s); |
297a4f1a ILT |
3189 | |
3190 | /* If we don't need this section, strip it from the output file. | |
3191 | This is to handle .rela.bss and .rela.plt. We must create it | |
3192 | in create_dynamic_sections, because it must be created before | |
3193 | the linker maps input sections to output sections. The | |
3194 | linker does that before adjust_dynamic_symbol is called, and | |
3195 | it is that function which decides whether anything needs to | |
3196 | go into these sections. */ | |
3197 | ||
3198 | strip = false; | |
3199 | ||
ff12f303 | 3200 | if (strncmp (name, ".rela", 5) == 0) |
297a4f1a ILT |
3201 | { |
3202 | strip = (s->_raw_size == 0); | |
3203 | ||
3204 | if (!strip) | |
3205 | { | |
303e7257 | 3206 | const char *outname; |
297a4f1a ILT |
3207 | asection *target; |
3208 | ||
3209 | /* If this relocation section applies to a read only | |
3210 | section, then we probably need a DT_TEXTREL entry. */ | |
303e7257 ILT |
3211 | outname = bfd_get_section_name (output_bfd, |
3212 | s->output_section); | |
3213 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
297a4f1a | 3214 | if (target != NULL |
3a13dd8f RH |
3215 | && (target->flags & SEC_READONLY) != 0 |
3216 | && (target->flags & SEC_ALLOC) != 0) | |
297a4f1a ILT |
3217 | reltext = true; |
3218 | ||
3219 | if (strcmp(name, ".rela.plt") == 0) | |
3220 | relplt = true; | |
3221 | ||
3222 | /* We use the reloc_count field as a counter if we need | |
3223 | to copy relocs into the output file. */ | |
3224 | s->reloc_count = 0; | |
3225 | } | |
3226 | } | |
297a4f1a ILT |
3227 | else if (strcmp (name, ".plt") != 0) |
3228 | { | |
ff12f303 | 3229 | /* It's not one of our dynamic sections, so don't allocate space. */ |
297a4f1a ILT |
3230 | continue; |
3231 | } | |
3232 | ||
3233 | if (strip) | |
ff12f303 ILT |
3234 | elf64_alpha_strip_section_from_output (s); |
3235 | else | |
297a4f1a | 3236 | { |
ff12f303 ILT |
3237 | /* Allocate memory for the section contents. */ |
3238 | s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size); | |
3239 | if (s->contents == NULL && s->_raw_size != 0) | |
3240 | return false; | |
3241 | } | |
3242 | } | |
297a4f1a | 3243 | |
ff12f303 ILT |
3244 | /* If we are generating a shared library, we generate a section |
3245 | symbol for each output section. These are local symbols, which | |
3246 | means that they must come first in the dynamic symbol table. | |
3247 | That means we must increment the dynamic symbol index of every | |
3248 | other dynamic symbol. */ | |
3249 | if (info->shared) | |
3250 | { | |
3251 | long c[2], i; | |
3252 | asection *p; | |
297a4f1a | 3253 | |
ff12f303 ILT |
3254 | c[0] = 0; |
3255 | c[1] = bfd_count_sections (output_bfd); | |
297a4f1a | 3256 | |
ff12f303 ILT |
3257 | elf_hash_table (info)->dynsymcount += c[1]; |
3258 | elf_link_hash_traverse (elf_hash_table(info), | |
3259 | elf64_alpha_adjust_dynindx, | |
3260 | (PTR) c); | |
3261 | ||
3262 | for (i = 1, p = output_bfd->sections; | |
3263 | p != NULL; | |
3264 | p = p->next, i++) | |
3265 | { | |
3266 | elf_section_data (p)->dynindx = i; | |
3267 | /* These symbols will have no names, so we don't need to | |
3268 | fiddle with dynstr_index. */ | |
3269 | } | |
297a4f1a ILT |
3270 | } |
3271 | ||
3272 | if (elf_hash_table (info)->dynamic_sections_created) | |
3273 | { | |
3274 | /* Add some entries to the .dynamic section. We fill in the | |
3275 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
3276 | must add the entries now so that we get the correct size for | |
3277 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3278 | dynamic linker and used by the debugger. */ | |
3279 | if (!info->shared) | |
3280 | { | |
3281 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
3282 | return false; | |
3283 | } | |
3284 | ||
3285 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
3286 | return false; | |
3287 | ||
3288 | if (relplt) | |
3289 | { | |
3290 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
3291 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
3292 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) | |
3293 | return false; | |
3294 | } | |
3295 | ||
3296 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) | |
3297 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) | |
3298 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, | |
3299 | sizeof(Elf64_External_Rela))) | |
3300 | return false; | |
3301 | ||
3302 | if (reltext) | |
3303 | { | |
3304 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
3305 | return false; | |
3306 | } | |
3307 | } | |
3308 | ||
3309 | return true; | |
3310 | } | |
3311 | ||
3312 | /* Increment the index of a dynamic symbol by a given amount. Called | |
3313 | via elf_link_hash_traverse. */ | |
3314 | ||
3315 | static boolean | |
3316 | elf64_alpha_adjust_dynindx (h, cparg) | |
3317 | struct elf_link_hash_entry *h; | |
3318 | PTR cparg; | |
3319 | { | |
3320 | long *cp = (long *)cparg; | |
3321 | ||
3322 | if (h->dynindx >= cp[0]) | |
3323 | h->dynindx += cp[1]; | |
3324 | ||
3325 | return true; | |
3326 | } | |
3327 | ||
3328 | /* Relocate an Alpha ELF section. */ | |
3329 | ||
3330 | static boolean | |
3331 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, | |
3332 | contents, relocs, local_syms, local_sections) | |
3333 | bfd *output_bfd; | |
3334 | struct bfd_link_info *info; | |
3335 | bfd *input_bfd; | |
3336 | asection *input_section; | |
3337 | bfd_byte *contents; | |
3338 | Elf_Internal_Rela *relocs; | |
3339 | Elf_Internal_Sym *local_syms; | |
3340 | asection **local_sections; | |
3341 | { | |
3342 | Elf_Internal_Shdr *symtab_hdr; | |
3343 | Elf_Internal_Rela *rel; | |
3344 | Elf_Internal_Rela *relend; | |
ff12f303 ILT |
3345 | asection *sec, *sgot, *srel, *srelgot; |
3346 | bfd *dynobj, *gotobj; | |
297a4f1a ILT |
3347 | bfd_vma gp; |
3348 | ||
ff12f303 ILT |
3349 | srelgot = srel = NULL; |
3350 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3351 | dynobj = elf_hash_table (info)->dynobj; | |
3352 | if (dynobj) | |
3353 | { | |
3354 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3355 | } | |
297a4f1a ILT |
3356 | |
3357 | /* Find the gp value for this input bfd. */ | |
3358 | sgot = NULL; | |
3359 | gp = 0; | |
ff12f303 ILT |
3360 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; |
3361 | if (gotobj) | |
297a4f1a | 3362 | { |
ff12f303 ILT |
3363 | sgot = alpha_elf_tdata (gotobj)->got; |
3364 | gp = _bfd_get_gp_value (gotobj); | |
297a4f1a ILT |
3365 | if (gp == 0) |
3366 | { | |
3367 | gp = (sgot->output_section->vma | |
3368 | + sgot->output_offset | |
3369 | + 0x8000); | |
ff12f303 | 3370 | _bfd_set_gp_value (gotobj, gp); |
297a4f1a ILT |
3371 | } |
3372 | } | |
3373 | ||
3374 | rel = relocs; | |
3375 | relend = relocs + input_section->reloc_count; | |
3376 | for (; rel < relend; rel++) | |
3377 | { | |
3378 | int r_type; | |
3379 | reloc_howto_type *howto; | |
3380 | unsigned long r_symndx; | |
ff12f303 | 3381 | struct alpha_elf_link_hash_entry *h; |
297a4f1a ILT |
3382 | Elf_Internal_Sym *sym; |
3383 | bfd_vma relocation; | |
3384 | bfd_vma addend; | |
3385 | bfd_reloc_status_type r; | |
3386 | ||
3387 | r_type = ELF64_R_TYPE(rel->r_info); | |
3388 | if (r_type < 0 || r_type >= (int) R_ALPHA_max) | |
3389 | { | |
3390 | bfd_set_error (bfd_error_bad_value); | |
3391 | return false; | |
3392 | } | |
3393 | howto = elf64_alpha_howto_table + r_type; | |
3394 | ||
3395 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3396 | ||
3397 | if (info->relocateable) | |
3398 | { | |
3399 | /* This is a relocateable link. We don't have to change | |
3400 | anything, unless the reloc is against a section symbol, | |
3401 | in which case we have to adjust according to where the | |
3402 | section symbol winds up in the output section. */ | |
3403 | if (r_symndx < symtab_hdr->sh_info) | |
3404 | { | |
3405 | sym = local_syms + r_symndx; | |
3406 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3407 | { | |
3408 | sec = local_sections[r_symndx]; | |
3409 | rel->r_addend += sec->output_offset + sym->st_value; | |
3410 | } | |
3411 | } | |
3412 | ||
3413 | continue; | |
3414 | } | |
3415 | ||
3416 | /* This is a final link. */ | |
3417 | ||
3418 | h = NULL; | |
3419 | sym = NULL; | |
3420 | sec = NULL; | |
3421 | ||
3422 | if (r_symndx < symtab_hdr->sh_info) | |
3423 | { | |
3424 | sym = local_syms + r_symndx; | |
3425 | sec = local_sections[r_symndx]; | |
3426 | relocation = (sec->output_section->vma | |
3427 | + sec->output_offset | |
3428 | + sym->st_value); | |
3429 | } | |
3430 | else | |
3431 | { | |
ff12f303 | 3432 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; |
297a4f1a | 3433 | |
ff12f303 ILT |
3434 | while (h->root.root.type == bfd_link_hash_indirect |
3435 | || h->root.root.type == bfd_link_hash_warning) | |
3436 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
297a4f1a | 3437 | |
ff12f303 ILT |
3438 | if (h->root.root.type == bfd_link_hash_defined |
3439 | || h->root.root.type == bfd_link_hash_defweak) | |
297a4f1a | 3440 | { |
ff12f303 | 3441 | sec = h->root.root.u.def.section; |
297a4f1a ILT |
3442 | |
3443 | #if rth_notdef | |
3444 | if ((r_type == R_ALPHA_LITERAL | |
3445 | && elf_hash_table(info)->dynamic_sections_created | |
3446 | && (!info->shared | |
3447 | || !info->symbolic | |
ff12f303 | 3448 | || !(h->root.elf_link_hash_flags |
297a4f1a ILT |
3449 | & ELF_LINK_HASH_DEF_REGULAR))) |
3450 | || (info->shared | |
3451 | && (!info->symbolic | |
ff12f303 | 3452 | || !(h->root.elf_link_hash_flags |
297a4f1a ILT |
3453 | & ELF_LINK_HASH_DEF_REGULAR)) |
3454 | && (input_section->flags & SEC_ALLOC) | |
3455 | && (r_type == R_ALPHA_REFLONG | |
3456 | || r_type == R_ALPHA_REFQUAD | |
3457 | || r_type == R_ALPHA_LITERAL))) | |
3458 | { | |
3459 | /* In these cases, we don't need the relocation value. | |
3460 | We check specially because in some obscure cases | |
3461 | sec->output_section will be NULL. */ | |
3462 | relocation = 0; | |
3463 | } | |
3464 | #else | |
3465 | /* FIXME: Are not these obscure cases simply bugs? Let's | |
3466 | get something working and come back to this. */ | |
3467 | if (sec->output_section == NULL) | |
3468 | relocation = 0; | |
3469 | #endif /* rth_notdef */ | |
3470 | else | |
3471 | { | |
ff12f303 | 3472 | relocation = (h->root.root.u.def.value |
297a4f1a ILT |
3473 | + sec->output_section->vma |
3474 | + sec->output_offset); | |
3475 | } | |
3476 | } | |
ff12f303 | 3477 | else if (h->root.root.type == bfd_link_hash_undefweak) |
297a4f1a ILT |
3478 | relocation = 0; |
3479 | else if (info->shared && !info->symbolic) | |
3480 | relocation = 0; | |
3481 | else | |
3482 | { | |
3483 | if (!((*info->callbacks->undefined_symbol) | |
ff12f303 | 3484 | (info, h->root.root.root.string, input_bfd, |
297a4f1a ILT |
3485 | input_section, rel->r_offset))) |
3486 | return false; | |
3487 | relocation = 0; | |
3488 | } | |
3489 | } | |
3490 | addend = rel->r_addend; | |
3491 | ||
3492 | switch (r_type) | |
3493 | { | |
3494 | case R_ALPHA_GPDISP: | |
3495 | { | |
3496 | bfd_byte *p_ldah, *p_lda; | |
3497 | ||
ff12f303 ILT |
3498 | BFD_ASSERT(gp != 0); |
3499 | ||
297a4f1a ILT |
3500 | relocation = (input_section->output_section->vma |
3501 | + input_section->output_offset | |
3502 | + rel->r_offset); | |
3503 | ||
3504 | p_ldah = contents + rel->r_offset - input_section->vma; | |
3505 | p_lda = p_ldah + rel->r_addend; | |
3506 | ||
3507 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation, | |
3508 | p_ldah, p_lda); | |
3509 | } | |
3510 | break; | |
3511 | ||
3512 | case R_ALPHA_OP_PUSH: | |
3513 | case R_ALPHA_OP_STORE: | |
3514 | case R_ALPHA_OP_PSUB: | |
3515 | case R_ALPHA_OP_PRSHIFT: | |
ff12f303 | 3516 | /* We hate these silly beasts. */ |
297a4f1a ILT |
3517 | abort(); |
3518 | ||
3519 | case R_ALPHA_LITERAL: | |
3520 | { | |
ff12f303 | 3521 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 3522 | |
297a4f1a | 3523 | BFD_ASSERT(sgot != NULL); |
ff12f303 ILT |
3524 | BFD_ASSERT(gp != 0); |
3525 | ||
297a4f1a ILT |
3526 | if (h != NULL) |
3527 | { | |
ff12f303 | 3528 | gotent = h->got_entries; |
69842d08 | 3529 | BFD_ASSERT(gotent != NULL); |
3a13dd8f | 3530 | |
ff12f303 ILT |
3531 | while (gotent->gotobj != gotobj || gotent->addend != addend) |
3532 | gotent = gotent->next; | |
297a4f1a | 3533 | |
ff12f303 ILT |
3534 | /* Initialize the .got entry's value. */ |
3535 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) | |
3536 | { | |
3537 | bfd_put_64 (output_bfd, relocation+addend, | |
3538 | sgot->contents + gotent->got_offset); | |
297a4f1a | 3539 | |
6a587c4a RH |
3540 | /* If the symbol has been forced local, output a |
3541 | RELATIVE reloc, otherwise it will be handled in | |
3542 | finish_dynamic_symbol. */ | |
3543 | if (info->shared && h->root.dynindx == -1) | |
3544 | { | |
3545 | Elf_Internal_Rela outrel; | |
3546 | ||
3547 | BFD_ASSERT(srelgot != NULL); | |
3548 | ||
3549 | outrel.r_offset = (sgot->output_section->vma | |
3550 | + sgot->output_offset | |
3551 | + gotent->got_offset); | |
3552 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
3553 | outrel.r_addend = 0; | |
3554 | ||
3555 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3556 | ((Elf64_External_Rela *) | |
3557 | srelgot->contents) | |
3558 | + srelgot->reloc_count++); | |
3559 | } | |
297a4f1a | 3560 | |
ff12f303 ILT |
3561 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; |
3562 | } | |
3563 | } | |
3564 | else | |
3565 | { | |
3566 | gotent = (alpha_elf_tdata(input_bfd)-> | |
3567 | local_got_entries[r_symndx]); | |
3568 | while (gotent->addend != addend) | |
3569 | gotent = gotent->next; | |
3570 | ||
3571 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) | |
3572 | { | |
3573 | bfd_put_64 (output_bfd, relocation+addend, | |
3574 | sgot->contents + gotent->got_offset); | |
3575 | ||
3576 | /* Local got entries need RELATIVE relocs in shared | |
3577 | libraries. */ | |
3578 | if (info->shared) | |
3579 | { | |
3580 | Elf_Internal_Rela outrel; | |
3581 | ||
3582 | BFD_ASSERT(srelgot != NULL); | |
3583 | ||
3584 | outrel.r_offset = (sgot->output_section->vma | |
3585 | + sgot->output_offset | |
3586 | + gotent->got_offset); | |
3587 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
3588 | outrel.r_addend = 0; | |
3589 | ||
3590 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3591 | ((Elf64_External_Rela *) | |
3592 | srelgot->contents) | |
3593 | + srelgot->reloc_count++); | |
3594 | } | |
3595 | ||
3596 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; | |
3597 | } | |
297a4f1a | 3598 | } |
297a4f1a ILT |
3599 | |
3600 | /* Figure the gprel relocation. */ | |
3601 | addend = 0; | |
3602 | relocation = (sgot->output_section->vma | |
3603 | + sgot->output_offset | |
ff12f303 | 3604 | + gotent->got_offset); |
297a4f1a ILT |
3605 | relocation -= gp; |
3606 | } | |
3607 | /* overflow handled by _bfd_final_link_relocate */ | |
3608 | goto default_reloc; | |
ff12f303 | 3609 | |
297a4f1a | 3610 | case R_ALPHA_GPREL32: |
69842d08 RH |
3611 | case R_ALPHA_GPRELLOW: |
3612 | BFD_ASSERT(gp != 0); | |
3613 | relocation -= gp; | |
3614 | goto default_reloc; | |
3615 | ||
3616 | case R_ALPHA_GPRELHIGH: | |
297a4f1a ILT |
3617 | BFD_ASSERT(gp != 0); |
3618 | relocation -= gp; | |
69842d08 RH |
3619 | relocation += addend; |
3620 | addend = 0; | |
3621 | relocation = (((bfd_signed_vma) relocation >> 16) | |
3622 | + ((relocation >> 15) & 1)); | |
297a4f1a ILT |
3623 | goto default_reloc; |
3624 | ||
3625 | case R_ALPHA_BRADDR: | |
3626 | case R_ALPHA_HINT: | |
3627 | /* The regular PC-relative stuff measures from the start of | |
3628 | the instruction rather than the end. */ | |
3629 | addend -= 4; | |
3630 | goto default_reloc; | |
ff12f303 | 3631 | |
297a4f1a ILT |
3632 | case R_ALPHA_REFLONG: |
3633 | case R_ALPHA_REFQUAD: | |
ff12f303 ILT |
3634 | { |
3635 | Elf_Internal_Rela outrel; | |
3a13dd8f | 3636 | boolean skip; |
297a4f1a | 3637 | |
ff12f303 ILT |
3638 | /* Careful here to remember RELATIVE relocations for global |
3639 | variables for symbolic shared objects. */ | |
3640 | ||
3641 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) | |
3642 | { | |
3643 | BFD_ASSERT(h->root.dynindx != -1); | |
3644 | outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type); | |
3645 | outrel.r_addend = addend; | |
3646 | addend = 0, relocation = 0; | |
3647 | } | |
3648 | else if (info->shared) | |
3649 | { | |
3650 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
3651 | outrel.r_addend = 0; | |
3652 | } | |
3653 | else | |
3654 | goto default_reloc; | |
3655 | ||
3656 | if (!srel) | |
3657 | { | |
3658 | const char *name; | |
3659 | ||
3660 | name = (bfd_elf_string_from_elf_section | |
3661 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
3662 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
3663 | BFD_ASSERT(name != NULL); | |
3664 | ||
3665 | srel = bfd_get_section_by_name (dynobj, name); | |
3666 | BFD_ASSERT(srel != NULL); | |
3667 | } | |
3668 | ||
3a13dd8f RH |
3669 | skip = false; |
3670 | ||
3671 | if (elf_section_data (input_section)->stab_info == NULL) | |
3672 | outrel.r_offset = rel->r_offset; | |
3673 | else | |
3674 | { | |
3675 | bfd_vma off; | |
3676 | ||
3677 | off = (_bfd_stab_section_offset | |
3678 | (output_bfd, &elf_hash_table (info)->stab_info, | |
3679 | input_section, | |
3680 | &elf_section_data (input_section)->stab_info, | |
3681 | rel->r_offset)); | |
3682 | if (off == (bfd_vma) -1) | |
3683 | skip = true; | |
3684 | outrel.r_offset = off; | |
3685 | } | |
3686 | ||
3687 | if (! skip) | |
3688 | outrel.r_offset += (input_section->output_section->vma | |
3689 | + input_section->output_offset); | |
3690 | else | |
3691 | memset (&outrel, 0, sizeof outrel); | |
ff12f303 ILT |
3692 | |
3693 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3694 | ((Elf64_External_Rela *) | |
3695 | srel->contents) | |
3696 | + srel->reloc_count++); | |
3697 | } | |
297a4f1a ILT |
3698 | goto default_reloc; |
3699 | ||
3700 | default: | |
3701 | default_reloc: | |
3702 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3703 | contents, rel->r_offset, relocation, | |
3704 | addend); | |
3705 | break; | |
3706 | } | |
3707 | ||
3708 | switch (r) | |
3709 | { | |
3710 | case bfd_reloc_ok: | |
3711 | break; | |
3712 | ||
3713 | case bfd_reloc_overflow: | |
3714 | { | |
3715 | const char *name; | |
3716 | ||
3717 | if (h != NULL) | |
ff12f303 | 3718 | name = h->root.root.root.string; |
297a4f1a ILT |
3719 | else |
3720 | { | |
3721 | name = (bfd_elf_string_from_elf_section | |
3722 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3723 | if (name == NULL) | |
3724 | return false; | |
3725 | if (*name == '\0') | |
3726 | name = bfd_section_name (input_bfd, sec); | |
3727 | } | |
3728 | if (! ((*info->callbacks->reloc_overflow) | |
3729 | (info, name, howto->name, (bfd_vma) 0, | |
3730 | input_bfd, input_section, rel->r_offset))) | |
3731 | return false; | |
3732 | } | |
3733 | break; | |
3734 | ||
3735 | default: | |
3736 | case bfd_reloc_outofrange: | |
3737 | abort (); | |
3738 | } | |
3739 | } | |
3740 | ||
3741 | return true; | |
3742 | } | |
3743 | ||
3744 | /* Finish up dynamic symbol handling. We set the contents of various | |
3745 | dynamic sections here. */ | |
3746 | ||
3747 | static boolean | |
3748 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) | |
3749 | bfd *output_bfd; | |
3750 | struct bfd_link_info *info; | |
3751 | struct elf_link_hash_entry *h; | |
3752 | Elf_Internal_Sym *sym; | |
3753 | { | |
3754 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
3755 | ||
3756 | if (h->plt_offset != MINUS_ONE) | |
3757 | { | |
ff12f303 | 3758 | /* Fill in the .plt entry for this symbol. */ |
297a4f1a ILT |
3759 | asection *splt, *sgot, *srel; |
3760 | Elf_Internal_Rela outrel; | |
3761 | bfd_vma got_addr, plt_addr; | |
3762 | bfd_vma plt_index; | |
ff12f303 | 3763 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 3764 | |
ff12f303 | 3765 | BFD_ASSERT (h->dynindx != -1); |
297a4f1a | 3766 | |
ff12f303 ILT |
3767 | /* The first .got entry will be updated by the .plt with the |
3768 | address of the target function. */ | |
3769 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
3770 | BFD_ASSERT (gotent && gotent->addend == 0); | |
297a4f1a | 3771 | |
ff12f303 ILT |
3772 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
3773 | BFD_ASSERT (splt != NULL); | |
3774 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3775 | BFD_ASSERT (srel != NULL); | |
3776 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3777 | BFD_ASSERT (sgot != NULL); | |
297a4f1a ILT |
3778 | |
3779 | got_addr = (sgot->output_section->vma | |
ff12f303 ILT |
3780 | + sgot->output_offset |
3781 | + gotent->got_offset); | |
297a4f1a ILT |
3782 | plt_addr = (splt->output_section->vma |
3783 | + splt->output_offset | |
3784 | + h->plt_offset); | |
3785 | ||
3786 | plt_index = (h->plt_offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
3787 | ||
3788 | /* Fill in the entry in the procedure linkage table. */ | |
3789 | { | |
3790 | unsigned insn1, insn2, insn3; | |
297a4f1a | 3791 | |
3a13dd8f RH |
3792 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt_offset + 4) >> 2) & 0x1fffff); |
3793 | insn2 = PLT_ENTRY_WORD2; | |
3794 | insn3 = PLT_ENTRY_WORD3; | |
ff12f303 | 3795 | |
297a4f1a ILT |
3796 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt_offset); |
3797 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt_offset + 4); | |
3798 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt_offset + 8); | |
3799 | } | |
3800 | ||
3801 | /* Fill in the entry in the .rela.plt section. */ | |
3802 | outrel.r_offset = got_addr; | |
3803 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
3804 | outrel.r_addend = 0; | |
3805 | ||
3806 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3807 | ((Elf64_External_Rela *)srel->contents | |
3808 | + plt_index)); | |
3809 | ||
3810 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
3811 | { | |
3812 | /* Mark the symbol as undefined, rather than as defined in the | |
3813 | .plt section. Leave the value alone. */ | |
3814 | sym->st_shndx = SHN_UNDEF; | |
3815 | } | |
3816 | ||
ff12f303 ILT |
3817 | /* Fill in the entries in the .got. */ |
3818 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
3819 | ||
3820 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
3821 | while ((gotent = gotent->next) != NULL) | |
3822 | { | |
3823 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
3824 | BFD_ASSERT(sgot != NULL); | |
3825 | BFD_ASSERT(gotent->addend == 0); | |
3826 | ||
3827 | bfd_put_64 (output_bfd, plt_addr, | |
3828 | sgot->contents + gotent->got_offset); | |
3829 | } | |
297a4f1a | 3830 | } |
ff12f303 | 3831 | else if (alpha_elf_dynamic_symbol_p (h, info)) |
297a4f1a | 3832 | { |
ff12f303 ILT |
3833 | /* Fill in the dynamic relocations for this symbol's .got entries. */ |
3834 | asection *srel; | |
297a4f1a | 3835 | Elf_Internal_Rela outrel; |
ff12f303 | 3836 | struct alpha_elf_got_entry *gotent; |
297a4f1a | 3837 | |
297a4f1a ILT |
3838 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
3839 | BFD_ASSERT (srel != NULL); | |
3840 | ||
ff12f303 ILT |
3841 | outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT); |
3842 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
3843 | gotent != NULL; | |
3844 | gotent = gotent->next) | |
297a4f1a | 3845 | { |
ff12f303 ILT |
3846 | asection *sgot = alpha_elf_tdata (gotent->gotobj)->got; |
3847 | outrel.r_offset = (sgot->output_section->vma | |
3848 | + sgot->output_offset | |
3849 | + gotent->got_offset); | |
3850 | outrel.r_addend = gotent->addend; | |
3851 | ||
3852 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3853 | ((Elf64_External_Rela *)srel->contents | |
3854 | + srel->reloc_count++)); | |
297a4f1a | 3855 | } |
297a4f1a ILT |
3856 | } |
3857 | ||
3858 | /* Mark some specially defined symbols as absolute. */ | |
3859 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3860 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
3861 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
3862 | sym->st_shndx = SHN_ABS; | |
3863 | ||
3864 | return true; | |
3865 | } | |
3866 | ||
3867 | /* Finish up the dynamic sections. */ | |
3868 | ||
3869 | static boolean | |
3870 | elf64_alpha_finish_dynamic_sections (output_bfd, info) | |
3871 | bfd *output_bfd; | |
3872 | struct bfd_link_info *info; | |
3873 | { | |
3874 | bfd *dynobj; | |
3875 | asection *sdyn; | |
297a4f1a ILT |
3876 | |
3877 | dynobj = elf_hash_table (info)->dynobj; | |
3878 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
3879 | ||
3880 | if (elf_hash_table (info)->dynamic_sections_created) | |
3881 | { | |
3882 | asection *splt; | |
3883 | Elf64_External_Dyn *dyncon, *dynconend; | |
3884 | ||
3885 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3886 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
3887 | ||
3888 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
3889 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3890 | for (; dyncon < dynconend; dyncon++) | |
3891 | { | |
3892 | Elf_Internal_Dyn dyn; | |
3893 | const char *name; | |
3894 | asection *s; | |
3895 | ||
3896 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
3897 | ||
3898 | switch (dyn.d_tag) | |
3899 | { | |
3900 | case DT_PLTGOT: | |
3901 | name = ".plt"; | |
3902 | goto get_vma; | |
3903 | case DT_PLTRELSZ: | |
3904 | name = ".rela.plt"; | |
3905 | goto get_size; | |
3906 | case DT_JMPREL: | |
3907 | name = ".rela.plt"; | |
3908 | goto get_vma; | |
3909 | ||
3910 | case DT_RELASZ: | |
3911 | /* My interpretation of the TIS v1.1 ELF document indicates | |
3912 | that RELASZ should not include JMPREL. This is not what | |
ff12f303 ILT |
3913 | the rest of the BFD does. It is, however, what the |
3914 | glibc ld.so wants. Do this fixup here until we found | |
297a4f1a ILT |
3915 | out who is right. */ |
3916 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
3917 | if (s) | |
3918 | { | |
3919 | dyn.d_un.d_val -= | |
3920 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
3921 | } | |
3922 | break; | |
3923 | ||
3924 | get_vma: | |
3925 | s = bfd_get_section_by_name (output_bfd, name); | |
3926 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
3927 | break; | |
3928 | ||
3929 | get_size: | |
3930 | s = bfd_get_section_by_name (output_bfd, name); | |
3931 | dyn.d_un.d_val = | |
3932 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
3933 | break; | |
3934 | } | |
3935 | ||
3936 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3937 | } | |
3938 | ||
3939 | /* Initialize the PLT0 entry */ | |
3940 | if (splt->_raw_size > 0) | |
3941 | { | |
3942 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
3943 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
3944 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
3945 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
ff12f303 | 3946 | |
297a4f1a ILT |
3947 | /* The next two words will be filled in by ld.so */ |
3948 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
3949 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
3950 | ||
ff12f303 | 3951 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
297a4f1a ILT |
3952 | PLT_HEADER_SIZE; |
3953 | } | |
3954 | } | |
3955 | ||
297a4f1a ILT |
3956 | if (info->shared) |
3957 | { | |
3958 | asection *sdynsym; | |
3959 | asection *s; | |
3960 | Elf_Internal_Sym sym; | |
3961 | ||
3962 | /* Set up the section symbols for the output sections. */ | |
3963 | ||
3964 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
3965 | BFD_ASSERT (sdynsym != NULL); | |
3966 | ||
3967 | sym.st_size = 0; | |
3968 | sym.st_name = 0; | |
3969 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
3970 | sym.st_other = 0; | |
3971 | ||
3972 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
3973 | { | |
3974 | int indx; | |
3975 | ||
3976 | sym.st_value = s->vma; | |
3977 | ||
3978 | indx = elf_section_data (s)->this_idx; | |
3979 | BFD_ASSERT (indx > 0); | |
3980 | sym.st_shndx = indx; | |
3981 | ||
3982 | bfd_elf64_swap_symbol_out (output_bfd, &sym, | |
3983 | (PTR) (((Elf64_External_Sym *) | |
3984 | sdynsym->contents) | |
3985 | + elf_section_data (s)->dynindx)); | |
3986 | } | |
3987 | ||
3988 | /* Set the sh_info field of the output .dynsym section to the | |
3989 | index of the first global symbol. */ | |
3990 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
3991 | bfd_count_sections (output_bfd) + 1; | |
3992 | } | |
3993 | ||
3994 | return true; | |
3995 | } | |
3996 | ||
3997 | /* We need to use a special link routine to handle the .reginfo and | |
3998 | the .mdebug sections. We need to merge all instances of these | |
3999 | sections together, not write them all out sequentially. */ | |
4000 | ||
4001 | static boolean | |
4002 | elf64_alpha_final_link (abfd, info) | |
4003 | bfd *abfd; | |
4004 | struct bfd_link_info *info; | |
4005 | { | |
4006 | asection *o; | |
4007 | struct bfd_link_order *p; | |
4008 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
4009 | struct ecoff_debug_info debug; | |
4010 | const struct ecoff_debug_swap *swap | |
4011 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4012 | HDRR *symhdr = &debug.symbolic_header; | |
4013 | PTR mdebug_handle = NULL; | |
4014 | ||
4015 | /* Go through the sections and collect the .reginfo and .mdebug | |
4016 | information. */ | |
4017 | reginfo_sec = NULL; | |
4018 | mdebug_sec = NULL; | |
4019 | gptab_data_sec = NULL; | |
4020 | gptab_bss_sec = NULL; | |
4021 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
4022 | { | |
4023 | #ifdef ERIC_neverdef | |
4024 | if (strcmp (o->name, ".reginfo") == 0) | |
4025 | { | |
4026 | memset (®info, 0, sizeof reginfo); | |
4027 | ||
4028 | /* We have found the .reginfo section in the output file. | |
4029 | Look through all the link_orders comprising it and merge | |
4030 | the information together. */ | |
4031 | for (p = o->link_order_head; | |
4032 | p != (struct bfd_link_order *) NULL; | |
4033 | p = p->next) | |
4034 | { | |
4035 | asection *input_section; | |
4036 | bfd *input_bfd; | |
4037 | Elf64_External_RegInfo ext; | |
4038 | Elf64_RegInfo sub; | |
4039 | ||
4040 | if (p->type != bfd_indirect_link_order) | |
4041 | { | |
4042 | if (p->type == bfd_fill_link_order) | |
4043 | continue; | |
4044 | abort (); | |
4045 | } | |
4046 | ||
4047 | input_section = p->u.indirect.section; | |
4048 | input_bfd = input_section->owner; | |
4049 | ||
4050 | /* The linker emulation code has probably clobbered the | |
4051 | size to be zero bytes. */ | |
4052 | if (input_section->_raw_size == 0) | |
4053 | input_section->_raw_size = sizeof (Elf64_External_RegInfo); | |
4054 | ||
4055 | if (! bfd_get_section_contents (input_bfd, input_section, | |
4056 | (PTR) &ext, | |
4057 | (file_ptr) 0, | |
4058 | sizeof ext)) | |
4059 | return false; | |
4060 | ||
4061 | bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub); | |
4062 | ||
4063 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
4064 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
4065 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
4066 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
4067 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
4068 | ||
4069 | /* ri_gp_value is set by the function | |
4070 | alpha_elf_section_processing when the section is | |
4071 | finally written out. */ | |
4072 | ||
4073 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4074 | elf_link_input_bfd ignores this section. */ | |
4075 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4076 | } | |
4077 | ||
4078 | /* Force the section size to the value we want. */ | |
4079 | o->_raw_size = sizeof (Elf64_External_RegInfo); | |
4080 | ||
4081 | /* Skip this section later on (I don't think this currently | |
4082 | matters, but someday it might). */ | |
4083 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4084 | ||
4085 | reginfo_sec = o; | |
4086 | } | |
4087 | #endif | |
4088 | ||
4089 | if (strcmp (o->name, ".mdebug") == 0) | |
4090 | { | |
4091 | struct extsym_info einfo; | |
4092 | ||
4093 | /* We have found the .mdebug section in the output file. | |
4094 | Look through all the link_orders comprising it and merge | |
4095 | the information together. */ | |
4096 | symhdr->magic = swap->sym_magic; | |
4097 | /* FIXME: What should the version stamp be? */ | |
4098 | symhdr->vstamp = 0; | |
4099 | symhdr->ilineMax = 0; | |
4100 | symhdr->cbLine = 0; | |
4101 | symhdr->idnMax = 0; | |
4102 | symhdr->ipdMax = 0; | |
4103 | symhdr->isymMax = 0; | |
4104 | symhdr->ioptMax = 0; | |
4105 | symhdr->iauxMax = 0; | |
4106 | symhdr->issMax = 0; | |
4107 | symhdr->issExtMax = 0; | |
4108 | symhdr->ifdMax = 0; | |
4109 | symhdr->crfd = 0; | |
4110 | symhdr->iextMax = 0; | |
4111 | ||
4112 | /* We accumulate the debugging information itself in the | |
4113 | debug_info structure. */ | |
4114 | debug.line = NULL; | |
4115 | debug.external_dnr = NULL; | |
4116 | debug.external_pdr = NULL; | |
4117 | debug.external_sym = NULL; | |
4118 | debug.external_opt = NULL; | |
4119 | debug.external_aux = NULL; | |
4120 | debug.ss = NULL; | |
4121 | debug.ssext = debug.ssext_end = NULL; | |
4122 | debug.external_fdr = NULL; | |
4123 | debug.external_rfd = NULL; | |
4124 | debug.external_ext = debug.external_ext_end = NULL; | |
4125 | ||
4126 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4127 | if (mdebug_handle == (PTR) NULL) | |
4128 | return false; | |
4129 | ||
4130 | if (1) | |
4131 | { | |
4132 | asection *s; | |
4133 | EXTR esym; | |
4134 | bfd_vma last; | |
4135 | unsigned int i; | |
4136 | static const char * const name[] = | |
4137 | { | |
4138 | ".text", ".init", ".fini", ".data", | |
4139 | ".rodata", ".sdata", ".sbss", ".bss" | |
4140 | }; | |
4141 | static const int sc[] = { scText, scInit, scFini, scData, | |
4142 | scRData, scSData, scSBss, scBss }; | |
4143 | ||
4144 | esym.jmptbl = 0; | |
4145 | esym.cobol_main = 0; | |
4146 | esym.weakext = 0; | |
4147 | esym.reserved = 0; | |
4148 | esym.ifd = ifdNil; | |
4149 | esym.asym.iss = issNil; | |
4150 | esym.asym.st = stLocal; | |
4151 | esym.asym.reserved = 0; | |
4152 | esym.asym.index = indexNil; | |
4153 | for (i = 0; i < 8; i++) | |
4154 | { | |
4155 | esym.asym.sc = sc[i]; | |
4156 | s = bfd_get_section_by_name (abfd, name[i]); | |
4157 | if (s != NULL) | |
4158 | { | |
4159 | esym.asym.value = s->vma; | |
4160 | last = s->vma + s->_raw_size; | |
4161 | } | |
4162 | else | |
4163 | esym.asym.value = last; | |
ff12f303 | 4164 | |
297a4f1a ILT |
4165 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, |
4166 | name[i], &esym)) | |
4167 | return false; | |
4168 | } | |
4169 | } | |
4170 | ||
4171 | for (p = o->link_order_head; | |
4172 | p != (struct bfd_link_order *) NULL; | |
4173 | p = p->next) | |
4174 | { | |
4175 | asection *input_section; | |
4176 | bfd *input_bfd; | |
4177 | const struct ecoff_debug_swap *input_swap; | |
4178 | struct ecoff_debug_info input_debug; | |
4179 | char *eraw_src; | |
4180 | char *eraw_end; | |
4181 | ||
4182 | if (p->type != bfd_indirect_link_order) | |
4183 | { | |
4184 | if (p->type == bfd_fill_link_order) | |
4185 | continue; | |
4186 | abort (); | |
4187 | } | |
4188 | ||
4189 | input_section = p->u.indirect.section; | |
4190 | input_bfd = input_section->owner; | |
4191 | ||
4192 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4193 | || (get_elf_backend_data (input_bfd) | |
4194 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4195 | { | |
4196 | /* I don't know what a non ALPHA ELF bfd would be | |
4197 | doing with a .mdebug section, but I don't really | |
4198 | want to deal with it. */ | |
4199 | continue; | |
4200 | } | |
4201 | ||
4202 | input_swap = (get_elf_backend_data (input_bfd) | |
4203 | ->elf_backend_ecoff_debug_swap); | |
4204 | ||
4205 | BFD_ASSERT (p->size == input_section->_raw_size); | |
4206 | ||
4207 | /* The ECOFF linking code expects that we have already | |
4208 | read in the debugging information and set up an | |
4209 | ecoff_debug_info structure, so we do that now. */ | |
4210 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
4211 | &input_debug)) | |
4212 | return false; | |
4213 | ||
4214 | if (! (bfd_ecoff_debug_accumulate | |
4215 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
4216 | &input_debug, input_swap, info))) | |
4217 | return false; | |
4218 | ||
4219 | /* Loop through the external symbols. For each one with | |
4220 | interesting information, try to find the symbol in | |
4221 | the linker global hash table and save the information | |
4222 | for the output external symbols. */ | |
4223 | eraw_src = input_debug.external_ext; | |
4224 | eraw_end = (eraw_src | |
4225 | + (input_debug.symbolic_header.iextMax | |
4226 | * input_swap->external_ext_size)); | |
4227 | for (; | |
4228 | eraw_src < eraw_end; | |
4229 | eraw_src += input_swap->external_ext_size) | |
4230 | { | |
4231 | EXTR ext; | |
4232 | const char *name; | |
4233 | struct alpha_elf_link_hash_entry *h; | |
4234 | ||
4235 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
4236 | if (ext.asym.sc == scNil | |
4237 | || ext.asym.sc == scUndefined | |
4238 | || ext.asym.sc == scSUndefined) | |
4239 | continue; | |
4240 | ||
4241 | name = input_debug.ssext + ext.asym.iss; | |
4242 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
4243 | name, false, false, true); | |
4244 | if (h == NULL || h->esym.ifd != -2) | |
4245 | continue; | |
4246 | ||
4247 | if (ext.ifd != -1) | |
4248 | { | |
4249 | BFD_ASSERT (ext.ifd | |
4250 | < input_debug.symbolic_header.ifdMax); | |
4251 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
4252 | } | |
4253 | ||
4254 | h->esym = ext; | |
4255 | } | |
4256 | ||
4257 | /* Free up the information we just read. */ | |
4258 | free (input_debug.line); | |
4259 | free (input_debug.external_dnr); | |
4260 | free (input_debug.external_pdr); | |
4261 | free (input_debug.external_sym); | |
4262 | free (input_debug.external_opt); | |
4263 | free (input_debug.external_aux); | |
4264 | free (input_debug.ss); | |
4265 | free (input_debug.ssext); | |
4266 | free (input_debug.external_fdr); | |
4267 | free (input_debug.external_rfd); | |
4268 | free (input_debug.external_ext); | |
4269 | ||
4270 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4271 | elf_link_input_bfd ignores this section. */ | |
4272 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4273 | } | |
4274 | ||
4275 | #ifdef ERIC_neverdef | |
4276 | if (info->shared) | |
4277 | { | |
4278 | /* Create .rtproc section. */ | |
4279 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
4280 | if (rtproc_sec == NULL) | |
4281 | { | |
ff12f303 ILT |
4282 | flagword flags = (SEC_HAS_CONTENTS |
4283 | | SEC_IN_MEMORY | |
4284 | | SEC_LINKER_CREATED | |
297a4f1a ILT |
4285 | | SEC_READONLY); |
4286 | ||
4287 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); | |
4288 | if (rtproc_sec == NULL | |
4289 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) | |
4290 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 12)) | |
4291 | return false; | |
4292 | } | |
4293 | ||
4294 | if (! alpha_elf_create_procedure_table (mdebug_handle, abfd, | |
4295 | info, rtproc_sec, &debug)) | |
4296 | return false; | |
4297 | } | |
4298 | #endif | |
4299 | ||
4300 | ||
4301 | /* Build the external symbol information. */ | |
4302 | einfo.abfd = abfd; | |
4303 | einfo.info = info; | |
4304 | einfo.debug = &debug; | |
4305 | einfo.swap = swap; | |
4306 | einfo.failed = false; | |
4307 | elf_link_hash_traverse (elf_hash_table (info), | |
4308 | elf64_alpha_output_extsym, | |
4309 | (PTR) &einfo); | |
4310 | if (einfo.failed) | |
4311 | return false; | |
4312 | ||
4313 | /* Set the size of the .mdebug section. */ | |
4314 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
4315 | ||
4316 | /* Skip this section later on (I don't think this currently | |
4317 | matters, but someday it might). */ | |
4318 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4319 | ||
4320 | mdebug_sec = o; | |
4321 | } | |
4322 | ||
4323 | #ifdef ERIC_neverdef | |
4324 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) | |
4325 | { | |
4326 | const char *subname; | |
4327 | unsigned int c; | |
4328 | Elf64_gptab *tab; | |
4329 | Elf64_External_gptab *ext_tab; | |
4330 | unsigned int i; | |
4331 | ||
4332 | /* The .gptab.sdata and .gptab.sbss sections hold | |
4333 | information describing how the small data area would | |
4334 | change depending upon the -G switch. These sections | |
4335 | not used in executables files. */ | |
4336 | if (! info->relocateable) | |
4337 | { | |
4338 | asection **secpp; | |
4339 | ||
4340 | for (p = o->link_order_head; | |
4341 | p != (struct bfd_link_order *) NULL; | |
4342 | p = p->next) | |
4343 | { | |
4344 | asection *input_section; | |
4345 | ||
4346 | if (p->type != bfd_indirect_link_order) | |
4347 | { | |
4348 | if (p->type == bfd_fill_link_order) | |
4349 | continue; | |
4350 | abort (); | |
4351 | } | |
4352 | ||
4353 | input_section = p->u.indirect.section; | |
4354 | ||
4355 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4356 | elf_link_input_bfd ignores this section. */ | |
4357 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4358 | } | |
4359 | ||
4360 | /* Skip this section later on (I don't think this | |
4361 | currently matters, but someday it might). */ | |
4362 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4363 | ||
4364 | /* Really remove the section. */ | |
4365 | for (secpp = &abfd->sections; | |
4366 | *secpp != o; | |
4367 | secpp = &(*secpp)->next) | |
4368 | ; | |
4369 | *secpp = (*secpp)->next; | |
4370 | --abfd->section_count; | |
4371 | ||
4372 | continue; | |
4373 | } | |
4374 | ||
4375 | /* There is one gptab for initialized data, and one for | |
4376 | uninitialized data. */ | |
4377 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
4378 | gptab_data_sec = o; | |
4379 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
4380 | gptab_bss_sec = o; | |
4381 | else | |
4382 | { | |
4383 | (*_bfd_error_handler) | |
53d3ce37 | 4384 | (_("%s: illegal section name `%s'"), |
297a4f1a ILT |
4385 | bfd_get_filename (abfd), o->name); |
4386 | bfd_set_error (bfd_error_nonrepresentable_section); | |
4387 | return false; | |
4388 | } | |
4389 | ||
4390 | /* The linker script always combines .gptab.data and | |
4391 | .gptab.sdata into .gptab.sdata, and likewise for | |
4392 | .gptab.bss and .gptab.sbss. It is possible that there is | |
4393 | no .sdata or .sbss section in the output file, in which | |
4394 | case we must change the name of the output section. */ | |
4395 | subname = o->name + sizeof ".gptab" - 1; | |
4396 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
4397 | { | |
4398 | if (o == gptab_data_sec) | |
4399 | o->name = ".gptab.data"; | |
4400 | else | |
4401 | o->name = ".gptab.bss"; | |
4402 | subname = o->name + sizeof ".gptab" - 1; | |
4403 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
4404 | } | |
4405 | ||
4406 | /* Set up the first entry. */ | |
4407 | c = 1; | |
4408 | tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab)); | |
4409 | if (tab == NULL) | |
4410 | return false; | |
4411 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); | |
4412 | tab[0].gt_header.gt_unused = 0; | |
4413 | ||
4414 | /* Combine the input sections. */ | |
4415 | for (p = o->link_order_head; | |
4416 | p != (struct bfd_link_order *) NULL; | |
4417 | p = p->next) | |
4418 | { | |
4419 | asection *input_section; | |
4420 | bfd *input_bfd; | |
4421 | bfd_size_type size; | |
4422 | unsigned long last; | |
4423 | bfd_size_type gpentry; | |
4424 | ||
4425 | if (p->type != bfd_indirect_link_order) | |
4426 | { | |
4427 | if (p->type == bfd_fill_link_order) | |
4428 | continue; | |
4429 | abort (); | |
4430 | } | |
4431 | ||
4432 | input_section = p->u.indirect.section; | |
4433 | input_bfd = input_section->owner; | |
4434 | ||
4435 | /* Combine the gptab entries for this input section one | |
4436 | by one. We know that the input gptab entries are | |
4437 | sorted by ascending -G value. */ | |
4438 | size = bfd_section_size (input_bfd, input_section); | |
4439 | last = 0; | |
4440 | for (gpentry = sizeof (Elf64_External_gptab); | |
4441 | gpentry < size; | |
4442 | gpentry += sizeof (Elf64_External_gptab)) | |
4443 | { | |
4444 | Elf64_External_gptab ext_gptab; | |
4445 | Elf64_gptab int_gptab; | |
4446 | unsigned long val; | |
4447 | unsigned long add; | |
4448 | boolean exact; | |
4449 | unsigned int look; | |
4450 | ||
4451 | if (! (bfd_get_section_contents | |
4452 | (input_bfd, input_section, (PTR) &ext_gptab, | |
4453 | gpentry, sizeof (Elf64_External_gptab)))) | |
4454 | { | |
4455 | free (tab); | |
4456 | return false; | |
4457 | } | |
4458 | ||
4459 | bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab, | |
4460 | &int_gptab); | |
4461 | val = int_gptab.gt_entry.gt_g_value; | |
4462 | add = int_gptab.gt_entry.gt_bytes - last; | |
4463 | ||
4464 | exact = false; | |
4465 | for (look = 1; look < c; look++) | |
4466 | { | |
4467 | if (tab[look].gt_entry.gt_g_value >= val) | |
4468 | tab[look].gt_entry.gt_bytes += add; | |
4469 | ||
4470 | if (tab[look].gt_entry.gt_g_value == val) | |
4471 | exact = true; | |
4472 | } | |
4473 | ||
4474 | if (! exact) | |
4475 | { | |
4476 | Elf64_gptab *new_tab; | |
4477 | unsigned int max; | |
4478 | ||
4479 | /* We need a new table entry. */ | |
4480 | new_tab = ((Elf64_gptab *) | |
4481 | bfd_realloc ((PTR) tab, | |
4482 | (c + 1) * sizeof (Elf64_gptab))); | |
4483 | if (new_tab == NULL) | |
4484 | { | |
4485 | free (tab); | |
4486 | return false; | |
4487 | } | |
4488 | tab = new_tab; | |
4489 | tab[c].gt_entry.gt_g_value = val; | |
4490 | tab[c].gt_entry.gt_bytes = add; | |
4491 | ||
4492 | /* Merge in the size for the next smallest -G | |
4493 | value, since that will be implied by this new | |
4494 | value. */ | |
4495 | max = 0; | |
4496 | for (look = 1; look < c; look++) | |
4497 | { | |
4498 | if (tab[look].gt_entry.gt_g_value < val | |
4499 | && (max == 0 | |
4500 | || (tab[look].gt_entry.gt_g_value | |
4501 | > tab[max].gt_entry.gt_g_value))) | |
4502 | max = look; | |
4503 | } | |
4504 | if (max != 0) | |
4505 | tab[c].gt_entry.gt_bytes += | |
4506 | tab[max].gt_entry.gt_bytes; | |
4507 | ||
4508 | ++c; | |
4509 | } | |
4510 | ||
4511 | last = int_gptab.gt_entry.gt_bytes; | |
4512 | } | |
4513 | ||
4514 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4515 | elf_link_input_bfd ignores this section. */ | |
4516 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4517 | } | |
4518 | ||
4519 | /* The table must be sorted by -G value. */ | |
4520 | if (c > 2) | |
4521 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
4522 | ||
4523 | /* Swap out the table. */ | |
4524 | ext_tab = ((Elf64_External_gptab *) | |
4525 | bfd_alloc (abfd, c * sizeof (Elf64_External_gptab))); | |
4526 | if (ext_tab == NULL) | |
4527 | { | |
4528 | free (tab); | |
4529 | return false; | |
4530 | } | |
4531 | ||
4532 | for (i = 0; i < c; i++) | |
4533 | bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); | |
4534 | free (tab); | |
4535 | ||
4536 | o->_raw_size = c * sizeof (Elf64_External_gptab); | |
4537 | o->contents = (bfd_byte *) ext_tab; | |
4538 | ||
4539 | /* Skip this section later on (I don't think this currently | |
4540 | matters, but someday it might). */ | |
4541 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4542 | } | |
4543 | #endif | |
4544 | ||
4545 | } | |
4546 | ||
4547 | /* Invoke the regular ELF backend linker to do all the work. */ | |
4548 | if (! bfd_elf64_bfd_final_link (abfd, info)) | |
4549 | return false; | |
4550 | ||
4551 | /* Now write out the computed sections. */ | |
4552 | ||
ff12f303 ILT |
4553 | /* The .got subsections... */ |
4554 | { | |
4555 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
4556 | for (i = alpha_elf_hash_table(info)->got_list; | |
4557 | i != NULL; | |
4558 | i = alpha_elf_tdata(i)->got_link_next) | |
4559 | { | |
4560 | asection *sgot; | |
4561 | ||
4562 | /* elf_bfd_final_link already did everything in dynobj. */ | |
4563 | if (i == dynobj) | |
4564 | continue; | |
4565 | ||
4566 | sgot = alpha_elf_tdata(i)->got; | |
4567 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
4568 | sgot->contents, sgot->output_offset, | |
4569 | sgot->_raw_size)) | |
4570 | return false; | |
4571 | } | |
4572 | } | |
4573 | ||
297a4f1a ILT |
4574 | #ifdef ERIC_neverdef |
4575 | if (reginfo_sec != (asection *) NULL) | |
4576 | { | |
4577 | Elf64_External_RegInfo ext; | |
4578 | ||
4579 | bfd_alpha_elf64_swap_reginfo_out (abfd, ®info, &ext); | |
4580 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, | |
4581 | (file_ptr) 0, sizeof ext)) | |
4582 | return false; | |
4583 | } | |
4584 | #endif | |
4585 | ||
4586 | if (mdebug_sec != (asection *) NULL) | |
4587 | { | |
4588 | BFD_ASSERT (abfd->output_has_begun); | |
4589 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
4590 | swap, info, | |
4591 | mdebug_sec->filepos)) | |
4592 | return false; | |
4593 | ||
4594 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
4595 | } | |
4596 | ||
4597 | if (gptab_data_sec != (asection *) NULL) | |
4598 | { | |
4599 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
4600 | gptab_data_sec->contents, | |
4601 | (file_ptr) 0, | |
4602 | gptab_data_sec->_raw_size)) | |
4603 | return false; | |
4604 | } | |
4605 | ||
4606 | if (gptab_bss_sec != (asection *) NULL) | |
4607 | { | |
4608 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
4609 | gptab_bss_sec->contents, | |
4610 | (file_ptr) 0, | |
4611 | gptab_bss_sec->_raw_size)) | |
4612 | return false; | |
4613 | } | |
4614 | ||
4615 | return true; | |
4616 | } | |
4617 | \f | |
4618 | /* ECOFF swapping routines. These are used when dealing with the | |
4619 | .mdebug section, which is in the ECOFF debugging format. Copied | |
4620 | from elf32-mips.c. */ | |
4621 | static const struct ecoff_debug_swap | |
4622 | elf64_alpha_ecoff_debug_swap = | |
4623 | { | |
4624 | /* Symbol table magic number. */ | |
4625 | magicSym2, | |
4626 | /* Alignment of debugging information. E.g., 4. */ | |
4627 | 8, | |
4628 | /* Sizes of external symbolic information. */ | |
4629 | sizeof (struct hdr_ext), | |
4630 | sizeof (struct dnr_ext), | |
4631 | sizeof (struct pdr_ext), | |
4632 | sizeof (struct sym_ext), | |
4633 | sizeof (struct opt_ext), | |
4634 | sizeof (struct fdr_ext), | |
4635 | sizeof (struct rfd_ext), | |
4636 | sizeof (struct ext_ext), | |
4637 | /* Functions to swap in external symbolic data. */ | |
4638 | ecoff_swap_hdr_in, | |
4639 | ecoff_swap_dnr_in, | |
4640 | ecoff_swap_pdr_in, | |
4641 | ecoff_swap_sym_in, | |
4642 | ecoff_swap_opt_in, | |
4643 | ecoff_swap_fdr_in, | |
4644 | ecoff_swap_rfd_in, | |
4645 | ecoff_swap_ext_in, | |
4646 | _bfd_ecoff_swap_tir_in, | |
4647 | _bfd_ecoff_swap_rndx_in, | |
4648 | /* Functions to swap out external symbolic data. */ | |
4649 | ecoff_swap_hdr_out, | |
4650 | ecoff_swap_dnr_out, | |
4651 | ecoff_swap_pdr_out, | |
4652 | ecoff_swap_sym_out, | |
4653 | ecoff_swap_opt_out, | |
4654 | ecoff_swap_fdr_out, | |
4655 | ecoff_swap_rfd_out, | |
4656 | ecoff_swap_ext_out, | |
4657 | _bfd_ecoff_swap_tir_out, | |
4658 | _bfd_ecoff_swap_rndx_out, | |
4659 | /* Function to read in symbolic data. */ | |
4660 | elf64_alpha_read_ecoff_info | |
4661 | }; | |
4662 | \f | |
4663 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec | |
4664 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
4665 | #define ELF_ARCH bfd_arch_alpha | |
4666 | #define ELF_MACHINE_CODE EM_ALPHA | |
69842d08 | 4667 | #define ELF_MAXPAGESIZE 0x10000 |
297a4f1a ILT |
4668 | |
4669 | #define bfd_elf64_bfd_link_hash_table_create \ | |
4670 | elf64_alpha_bfd_link_hash_table_create | |
4671 | ||
4672 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
4673 | elf64_alpha_bfd_reloc_type_lookup | |
4674 | #define elf_info_to_howto \ | |
4675 | elf64_alpha_info_to_howto | |
4676 | ||
ff12f303 ILT |
4677 | #define bfd_elf64_mkobject \ |
4678 | elf64_alpha_mkobject | |
297a4f1a | 4679 | #define elf_backend_object_p \ |
ff12f303 | 4680 | elf64_alpha_object_p |
3a13dd8f | 4681 | |
297a4f1a ILT |
4682 | #define elf_backend_section_from_shdr \ |
4683 | elf64_alpha_section_from_shdr | |
4684 | #define elf_backend_fake_sections \ | |
4685 | elf64_alpha_fake_sections | |
4686 | #define elf_backend_additional_program_headers \ | |
4687 | elf64_alpha_additional_program_headers | |
4688 | ||
303e7257 ILT |
4689 | #define bfd_elf64_bfd_is_local_label_name \ |
4690 | elf64_alpha_is_local_label_name | |
297a4f1a ILT |
4691 | #define bfd_elf64_find_nearest_line \ |
4692 | elf64_alpha_find_nearest_line | |
69842d08 RH |
4693 | #define bfd_elf64_bfd_relax_section \ |
4694 | elf64_alpha_relax_section | |
297a4f1a | 4695 | |
69842d08 RH |
4696 | #define elf_backend_add_symbol_hook \ |
4697 | elf64_alpha_add_symbol_hook | |
297a4f1a ILT |
4698 | #define elf_backend_check_relocs \ |
4699 | elf64_alpha_check_relocs | |
4700 | #define elf_backend_create_dynamic_sections \ | |
4701 | elf64_alpha_create_dynamic_sections | |
4702 | #define elf_backend_adjust_dynamic_symbol \ | |
4703 | elf64_alpha_adjust_dynamic_symbol | |
ff12f303 ILT |
4704 | #define elf_backend_always_size_sections \ |
4705 | elf64_alpha_always_size_sections | |
297a4f1a ILT |
4706 | #define elf_backend_size_dynamic_sections \ |
4707 | elf64_alpha_size_dynamic_sections | |
4708 | #define elf_backend_relocate_section \ | |
4709 | elf64_alpha_relocate_section | |
4710 | #define elf_backend_finish_dynamic_symbol \ | |
4711 | elf64_alpha_finish_dynamic_symbol | |
4712 | #define elf_backend_finish_dynamic_sections \ | |
4713 | elf64_alpha_finish_dynamic_sections | |
4714 | #define bfd_elf64_bfd_final_link \ | |
4715 | elf64_alpha_final_link | |
4716 | ||
4717 | #define elf_backend_ecoff_debug_swap \ | |
4718 | &elf64_alpha_ecoff_debug_swap | |
4719 | ||
4720 | /* | |
4721 | * A few constants that determine how the .plt section is set up. | |
4722 | */ | |
4723 | #define elf_backend_want_got_plt 0 | |
4724 | #define elf_backend_plt_readonly 0 | |
4725 | #define elf_backend_want_plt_sym 1 | |
4726 | ||
4727 | #include "elf64-target.h" |