Commit | Line | Data |
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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
b3adc24a | 2 | Copyright (C) 1996-2020 Free Software Foundation, Inc. |
252b5132 RH |
3 | Contributed by Richard Henderson <rth@tamu.edu>. |
4 | ||
571fe01f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
571fe01f NC |
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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 10 | (at your option) any later version. |
252b5132 | 11 | |
571fe01f NC |
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. | |
252b5132 | 16 | |
571fe01f NC |
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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
21 | ||
252b5132 RH |
22 | |
23 | /* We need a published ABI spec for this. Until one comes out, don't | |
24 | assume this'll remain unchanged forever. */ | |
25 | ||
252b5132 | 26 | #include "sysdep.h" |
3db64b00 | 27 | #include "bfd.h" |
252b5132 RH |
28 | #include "libbfd.h" |
29 | #include "elf-bfd.h" | |
0ba9378a | 30 | #include "ecoff-bfd.h" |
252b5132 RH |
31 | |
32 | #include "elf/alpha.h" | |
33 | ||
34 | #define ALPHAECOFF | |
35 | ||
36 | #define NO_COFF_RELOCS | |
37 | #define NO_COFF_SYMBOLS | |
38 | #define NO_COFF_LINENOS | |
39 | ||
fe8bc63d | 40 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
41 | #include "coff/internal.h" |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/alpha.h" | |
46 | #include "aout/ar.h" | |
47 | #include "libcoff.h" | |
48 | #include "libecoff.h" | |
49 | #define ECOFF_64 | |
50 | #include "ecoffswap.h" | |
51 | ||
6ec7057a RH |
52 | \f |
53 | /* Instruction data for plt generation and relaxation. */ | |
54 | ||
55 | #define OP_LDA 0x08 | |
56 | #define OP_LDAH 0x09 | |
57 | #define OP_LDQ 0x29 | |
58 | #define OP_BR 0x30 | |
59 | #define OP_BSR 0x34 | |
60 | ||
61 | #define INSN_LDA (OP_LDA << 26) | |
62 | #define INSN_LDAH (OP_LDAH << 26) | |
63 | #define INSN_LDQ (OP_LDQ << 26) | |
64 | #define INSN_BR (OP_BR << 26) | |
65 | ||
66 | #define INSN_ADDQ 0x40000400 | |
67 | #define INSN_RDUNIQ 0x0000009e | |
68 | #define INSN_SUBQ 0x40000520 | |
69 | #define INSN_S4SUBQ 0x40000560 | |
70 | #define INSN_UNOP 0x2ffe0000 | |
71 | ||
72 | #define INSN_JSR 0x68004000 | |
73 | #define INSN_JMP 0x68000000 | |
74 | #define INSN_JSR_MASK 0xfc00c000 | |
75 | ||
76 | #define INSN_A(I,A) (I | (A << 21)) | |
77 | #define INSN_AB(I,A,B) (I | (A << 21) | (B << 16)) | |
78 | #define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C) | |
79 | #define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff)) | |
80 | #define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff)) | |
81 | ||
82 | /* PLT/GOT Stuff */ | |
83 | ||
84 | /* Set by ld emulation. Putting this into the link_info or hash structure | |
85 | is simply working too hard. */ | |
86 | #ifdef USE_SECUREPLT | |
87 | bfd_boolean elf64_alpha_use_secureplt = TRUE; | |
88 | #else | |
89 | bfd_boolean elf64_alpha_use_secureplt = FALSE; | |
90 | #endif | |
91 | ||
92 | #define OLD_PLT_HEADER_SIZE 32 | |
93 | #define OLD_PLT_ENTRY_SIZE 12 | |
94 | #define NEW_PLT_HEADER_SIZE 36 | |
95 | #define NEW_PLT_ENTRY_SIZE 4 | |
96 | ||
97 | #define PLT_HEADER_SIZE \ | |
98 | (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE) | |
99 | #define PLT_ENTRY_SIZE \ | |
100 | (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE) | |
101 | ||
102 | #define MAX_GOT_SIZE (64*1024) | |
103 | ||
104 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
252b5132 | 105 | \f |
21d799b5 NC |
106 | |
107 | /* Used to implement multiple .got subsections. */ | |
108 | struct alpha_elf_got_entry | |
109 | { | |
110 | struct alpha_elf_got_entry *next; | |
111 | ||
112 | /* Which .got subsection? */ | |
113 | bfd *gotobj; | |
114 | ||
115 | /* The addend in effect for this entry. */ | |
116 | bfd_vma addend; | |
117 | ||
118 | /* The .got offset for this entry. */ | |
119 | int got_offset; | |
120 | ||
121 | /* The .plt offset for this entry. */ | |
122 | int plt_offset; | |
123 | ||
124 | /* How many references to this entry? */ | |
125 | int use_count; | |
126 | ||
127 | /* The relocation type of this entry. */ | |
128 | unsigned char reloc_type; | |
129 | ||
130 | /* How a LITERAL is used. */ | |
131 | unsigned char flags; | |
132 | ||
133 | /* Have we initialized the dynamic relocation for this entry? */ | |
134 | unsigned char reloc_done; | |
135 | ||
136 | /* Have we adjusted this entry for SEC_MERGE? */ | |
137 | unsigned char reloc_xlated; | |
138 | }; | |
139 | ||
140 | struct alpha_elf_reloc_entry | |
141 | { | |
142 | struct alpha_elf_reloc_entry *next; | |
143 | ||
144 | /* Which .reloc section? */ | |
145 | asection *srel; | |
146 | ||
147 | /* What kind of relocation? */ | |
148 | unsigned int rtype; | |
149 | ||
150 | /* Is this against read-only section? */ | |
151 | unsigned int reltext : 1; | |
152 | ||
153 | /* How many did we find? */ | |
154 | unsigned long count; | |
155 | }; | |
156 | ||
252b5132 RH |
157 | struct alpha_elf_link_hash_entry |
158 | { | |
159 | struct elf_link_hash_entry root; | |
160 | ||
161 | /* External symbol information. */ | |
162 | EXTR esym; | |
163 | ||
164 | /* Cumulative flags for all the .got entries. */ | |
165 | int flags; | |
166 | ||
9e756d64 | 167 | /* Contexts in which a literal was referenced. */ |
8288a39e RH |
168 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
169 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
170 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
171 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
172 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
173 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
174 | #define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40 | |
175 | #define ALPHA_ELF_LINK_HASH_LU_PLT 0x38 | |
176 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x80 | |
cc03ec80 | 177 | |
252b5132 | 178 | /* Used to implement multiple .got subsections. */ |
21d799b5 | 179 | struct alpha_elf_got_entry *got_entries; |
252b5132 | 180 | |
571fe01f | 181 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 | 182 | of relocation sections. */ |
21d799b5 | 183 | struct alpha_elf_reloc_entry *reloc_entries; |
252b5132 RH |
184 | }; |
185 | ||
186 | /* Alpha ELF linker hash table. */ | |
187 | ||
188 | struct alpha_elf_link_hash_table | |
189 | { | |
190 | struct elf_link_hash_table root; | |
191 | ||
192 | /* The head of a list of .got subsections linked through | |
193 | alpha_elf_tdata(abfd)->got_link_next. */ | |
194 | bfd *got_list; | |
4a828aab RH |
195 | |
196 | /* The most recent relax pass that we've seen. The GOTs | |
197 | should be regenerated if this doesn't match. */ | |
198 | int relax_trip; | |
252b5132 RH |
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, \ | |
2c3fc389 | 213 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
214 | (info))) |
215 | ||
216 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
217 | ||
218 | #define alpha_elf_hash_table(p) \ | |
4dfe6ac6 NC |
219 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
220 | == ALPHA_ELF_DATA ? ((struct alpha_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 RH |
221 | |
222 | /* Get the object's symbols as our own entry type. */ | |
223 | ||
224 | #define alpha_elf_sym_hashes(abfd) \ | |
225 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
226 | ||
68ffbac6 | 227 | /* Should we do dynamic things to this symbol? This differs from the |
986a241f RH |
228 | generic version in that we never need to consider function pointer |
229 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
230 | address is ever taken. */ | |
252b5132 | 231 | |
986a241f | 232 | static inline bfd_boolean |
a7519a3c RH |
233 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
234 | struct bfd_link_info *info) | |
8fb35fed | 235 | { |
986a241f | 236 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 237 | } |
252b5132 RH |
238 | |
239 | /* Create an entry in a Alpha ELF linker hash table. */ | |
240 | ||
241 | static struct bfd_hash_entry * | |
a7519a3c RH |
242 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
243 | struct bfd_hash_table *table, | |
244 | const char *string) | |
252b5132 RH |
245 | { |
246 | struct alpha_elf_link_hash_entry *ret = | |
247 | (struct alpha_elf_link_hash_entry *) entry; | |
248 | ||
249 | /* Allocate the structure if it has not already been allocated by a | |
250 | subclass. */ | |
251 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
252 | ret = ((struct alpha_elf_link_hash_entry *) | |
253 | bfd_hash_allocate (table, | |
254 | sizeof (struct alpha_elf_link_hash_entry))); | |
255 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
256 | return (struct bfd_hash_entry *) ret; | |
257 | ||
258 | /* Call the allocation method of the superclass. */ | |
259 | ret = ((struct alpha_elf_link_hash_entry *) | |
260 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
261 | table, string)); | |
262 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
263 | { | |
264 | /* Set local fields. */ | |
265 | memset (&ret->esym, 0, sizeof (EXTR)); | |
266 | /* We use -2 as a marker to indicate that the information has | |
267 | not been set. -1 means there is no associated ifd. */ | |
268 | ret->esym.ifd = -2; | |
269 | ret->flags = 0; | |
270 | ret->got_entries = NULL; | |
271 | ret->reloc_entries = NULL; | |
272 | } | |
273 | ||
274 | return (struct bfd_hash_entry *) ret; | |
275 | } | |
276 | ||
277 | /* Create a Alpha ELF linker hash table. */ | |
278 | ||
279 | static struct bfd_link_hash_table * | |
a7519a3c | 280 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
281 | { |
282 | struct alpha_elf_link_hash_table *ret; | |
986f0783 | 283 | size_t amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 284 | |
e2d34d7d | 285 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
286 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
287 | return NULL; | |
288 | ||
66eb6687 AM |
289 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
290 | elf64_alpha_link_hash_newfunc, | |
4dfe6ac6 NC |
291 | sizeof (struct alpha_elf_link_hash_entry), |
292 | ALPHA_ELF_DATA)) | |
252b5132 | 293 | { |
e2d34d7d | 294 | free (ret); |
252b5132 RH |
295 | return NULL; |
296 | } | |
297 | ||
298 | return &ret->root.root; | |
299 | } | |
300 | \f | |
698600e4 AM |
301 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
302 | routine in order to handle the ECOFF debugging information. */ | |
303 | ||
304 | struct alpha_elf_find_line | |
305 | { | |
306 | struct ecoff_debug_info d; | |
307 | struct ecoff_find_line i; | |
308 | }; | |
309 | ||
252b5132 RH |
310 | /* We have some private fields hanging off of the elf_tdata structure. */ |
311 | ||
312 | struct alpha_elf_obj_tdata | |
313 | { | |
314 | struct elf_obj_tdata root; | |
315 | ||
316 | /* For every input file, these are the got entries for that object's | |
317 | local symbols. */ | |
318 | struct alpha_elf_got_entry ** local_got_entries; | |
319 | ||
320 | /* For every input file, this is the object that owns the got that | |
321 | this input file uses. */ | |
322 | bfd *gotobj; | |
323 | ||
324 | /* For every got, this is a linked list through the objects using this got */ | |
325 | bfd *in_got_link_next; | |
326 | ||
327 | /* For every got, this is a link to the next got subsegment. */ | |
328 | bfd *got_link_next; | |
329 | ||
330 | /* For every got, this is the section. */ | |
331 | asection *got; | |
332 | ||
3765b1be RH |
333 | /* For every got, this is it's total number of words. */ |
334 | int total_got_size; | |
252b5132 | 335 | |
3765b1be | 336 | /* For every got, this is the sum of the number of words required |
252b5132 | 337 | to hold all of the member object's local got. */ |
3765b1be | 338 | int local_got_size; |
698600e4 AM |
339 | |
340 | /* Used by elf64_alpha_find_nearest_line entry point. */ | |
341 | struct alpha_elf_find_line *find_line_info; | |
342 | ||
252b5132 RH |
343 | }; |
344 | ||
345 | #define alpha_elf_tdata(abfd) \ | |
346 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
347 | ||
0ffa91dd NC |
348 | #define is_alpha_elf(bfd) \ |
349 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
350 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 351 | && elf_object_id (bfd) == ALPHA_ELF_DATA) |
0ffa91dd | 352 | |
b34976b6 | 353 | static bfd_boolean |
a7519a3c | 354 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 355 | { |
0ffa91dd | 356 | return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata), |
4dfe6ac6 | 357 | ALPHA_ELF_DATA); |
252b5132 RH |
358 | } |
359 | ||
b34976b6 | 360 | static bfd_boolean |
a7519a3c | 361 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 362 | { |
252b5132 RH |
363 | /* Set the right machine number for an Alpha ELF file. */ |
364 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
365 | } | |
366 | \f | |
a7519a3c RH |
367 | /* A relocation function which doesn't do anything. */ |
368 | ||
369 | static bfd_reloc_status_type | |
370 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
371 | asymbol *sym ATTRIBUTE_UNUSED, | |
2c3fc389 | 372 | void * data ATTRIBUTE_UNUSED, asection *sec, |
a7519a3c RH |
373 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
374 | { | |
375 | if (output_bfd) | |
376 | reloc->address += sec->output_offset; | |
377 | return bfd_reloc_ok; | |
378 | } | |
379 | ||
380 | /* A relocation function used for an unsupported reloc. */ | |
381 | ||
382 | static bfd_reloc_status_type | |
383 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
384 | asymbol *sym ATTRIBUTE_UNUSED, | |
2c3fc389 | 385 | void * data ATTRIBUTE_UNUSED, asection *sec, |
a7519a3c RH |
386 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
387 | { | |
388 | if (output_bfd) | |
389 | reloc->address += sec->output_offset; | |
390 | return bfd_reloc_notsupported; | |
391 | } | |
392 | ||
393 | /* Do the work of the GPDISP relocation. */ | |
394 | ||
395 | static bfd_reloc_status_type | |
396 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
397 | bfd_byte *p_lda) | |
398 | { | |
399 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
400 | bfd_vma addend; | |
401 | unsigned long i_ldah, i_lda; | |
402 | ||
403 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
404 | i_lda = bfd_get_32 (abfd, p_lda); | |
405 | ||
406 | /* Complain if the instructions are not correct. */ | |
407 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
408 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
409 | ret = bfd_reloc_dangerous; | |
410 | ||
411 | /* Extract the user-supplied offset, mirroring the sign extensions | |
412 | that the instructions perform. */ | |
413 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
414 | addend = (addend ^ 0x80008000) - 0x80008000; | |
415 | ||
416 | gpdisp += addend; | |
417 | ||
418 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
419 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
420 | ret = bfd_reloc_overflow; | |
421 | ||
422 | /* compensate for the sign extension again. */ | |
423 | i_ldah = ((i_ldah & 0xffff0000) | |
424 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
425 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
426 | ||
427 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
428 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
429 | ||
430 | return ret; | |
431 | } | |
432 | ||
433 | /* The special function for the GPDISP reloc. */ | |
434 | ||
435 | static bfd_reloc_status_type | |
436 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
2c3fc389 | 437 | asymbol *sym ATTRIBUTE_UNUSED, void * data, |
a7519a3c RH |
438 | asection *input_section, bfd *output_bfd, |
439 | char **err_msg) | |
440 | { | |
441 | bfd_reloc_status_type ret; | |
442 | bfd_vma gp, relocation; | |
443 | bfd_vma high_address; | |
444 | bfd_byte *p_ldah, *p_lda; | |
445 | ||
446 | /* Don't do anything if we're not doing a final link. */ | |
447 | if (output_bfd) | |
448 | { | |
449 | reloc_entry->address += input_section->output_offset; | |
450 | return bfd_reloc_ok; | |
451 | } | |
452 | ||
453 | high_address = bfd_get_section_limit (abfd, input_section); | |
454 | if (reloc_entry->address > high_address | |
455 | || reloc_entry->address + reloc_entry->addend > high_address) | |
456 | return bfd_reloc_outofrange; | |
457 | ||
458 | /* The gp used in the portion of the output object to which this | |
459 | input object belongs is cached on the input bfd. */ | |
460 | gp = _bfd_get_gp_value (abfd); | |
461 | ||
462 | relocation = (input_section->output_section->vma | |
463 | + input_section->output_offset | |
464 | + reloc_entry->address); | |
465 | ||
466 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
467 | p_lda = p_ldah + reloc_entry->addend; | |
468 | ||
469 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
470 | ||
471 | /* Complain if the instructions are not correct. */ | |
472 | if (ret == bfd_reloc_dangerous) | |
473 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
474 | ||
475 | return ret; | |
476 | } | |
477 | ||
252b5132 RH |
478 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
479 | from smaller values. Start with zero, widen, *then* decrement. */ | |
480 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
481 | ||
21d799b5 | 482 | |
dfe57ca0 | 483 | #define SKIP_HOWTO(N) \ |
21d799b5 | 484 | HOWTO(N, 0, 0, 0, 0, 0, complain_overflow_dont, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) |
dfe57ca0 | 485 | |
252b5132 RH |
486 | static reloc_howto_type elf64_alpha_howto_table[] = |
487 | { | |
488 | HOWTO (R_ALPHA_NONE, /* type */ | |
489 | 0, /* rightshift */ | |
6346d5ca AM |
490 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
491 | 0, /* bitsize */ | |
b34976b6 | 492 | TRUE, /* pc_relative */ |
252b5132 RH |
493 | 0, /* bitpos */ |
494 | complain_overflow_dont, /* complain_on_overflow */ | |
495 | elf64_alpha_reloc_nil, /* special_function */ | |
496 | "NONE", /* name */ | |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
252b5132 RH |
498 | 0, /* src_mask */ |
499 | 0, /* dst_mask */ | |
b34976b6 | 500 | TRUE), /* pcrel_offset */ |
252b5132 RH |
501 | |
502 | /* A 32 bit reference to a symbol. */ | |
503 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
504 | 0, /* rightshift */ | |
505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
506 | 32, /* bitsize */ | |
b34976b6 | 507 | FALSE, /* pc_relative */ |
252b5132 RH |
508 | 0, /* bitpos */ |
509 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 510 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 511 | "REFLONG", /* name */ |
b34976b6 | 512 | FALSE, /* partial_inplace */ |
252b5132 RH |
513 | 0xffffffff, /* src_mask */ |
514 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 515 | FALSE), /* pcrel_offset */ |
252b5132 RH |
516 | |
517 | /* A 64 bit reference to a symbol. */ | |
518 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
519 | 0, /* rightshift */ | |
520 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 64, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
252b5132 RH |
523 | 0, /* bitpos */ |
524 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 525 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 526 | "REFQUAD", /* name */ |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
252b5132 RH |
528 | MINUS_ONE, /* src_mask */ |
529 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
252b5132 RH |
531 | |
532 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
533 | that when the value is used the value of the gp register will be | |
534 | added in. */ | |
535 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 32, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
252b5132 RH |
540 | 0, /* bitpos */ |
541 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 542 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 543 | "GPREL32", /* name */ |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
252b5132 RH |
545 | 0xffffffff, /* src_mask */ |
546 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
252b5132 RH |
548 | |
549 | /* Used for an instruction that refers to memory off the GP register. */ | |
550 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
551 | 0, /* rightshift */ | |
dfe57ca0 | 552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 553 | 16, /* bitsize */ |
b34976b6 | 554 | FALSE, /* pc_relative */ |
252b5132 RH |
555 | 0, /* bitpos */ |
556 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 557 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 558 | "ELF_LITERAL", /* name */ |
b34976b6 | 559 | FALSE, /* partial_inplace */ |
252b5132 RH |
560 | 0xffff, /* src_mask */ |
561 | 0xffff, /* dst_mask */ | |
b34976b6 | 562 | FALSE), /* pcrel_offset */ |
252b5132 RH |
563 | |
564 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
565 | It identifies a use of the literal. The symbol index is special: | |
566 | 1 means the literal address is in the base register of a memory | |
567 | format instruction; 2 means the literal address is in the byte | |
568 | offset register of a byte-manipulation instruction; 3 means the | |
569 | literal address is in the target register of a jsr instruction. | |
570 | This does not actually do any relocation. */ | |
571 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
572 | 0, /* rightshift */ | |
dfe57ca0 | 573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 574 | 32, /* bitsize */ |
b34976b6 | 575 | FALSE, /* pc_relative */ |
252b5132 RH |
576 | 0, /* bitpos */ |
577 | complain_overflow_dont, /* complain_on_overflow */ | |
578 | elf64_alpha_reloc_nil, /* special_function */ | |
579 | "LITUSE", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
252b5132 RH |
581 | 0, /* src_mask */ |
582 | 0, /* dst_mask */ | |
b34976b6 | 583 | FALSE), /* pcrel_offset */ |
252b5132 RH |
584 | |
585 | /* Load the gp register. This is always used for a ldah instruction | |
586 | which loads the upper 16 bits of the gp register. The symbol | |
587 | index of the GPDISP instruction is an offset in bytes to the lda | |
588 | instruction that loads the lower 16 bits. The value to use for | |
589 | the relocation is the difference between the GP value and the | |
590 | current location; the load will always be done against a register | |
591 | holding the current address. | |
592 | ||
593 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
594 | any offset is present in the instructions, it is an offset from | |
595 | the register to the ldah instruction. This lets us avoid any | |
596 | stupid hackery like inventing a gp value to do partial relocation | |
597 | against. Also unlike ECOFF, we do the whole relocation off of | |
598 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
599 | space consuming bit, that, since all the information was present | |
600 | in the GPDISP_HI16 reloc. */ | |
601 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
602 | 16, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 16, /* bitsize */ | |
b34976b6 | 605 | FALSE, /* pc_relative */ |
252b5132 RH |
606 | 0, /* bitpos */ |
607 | complain_overflow_dont, /* complain_on_overflow */ | |
608 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
609 | "GPDISP", /* name */ | |
b34976b6 | 610 | FALSE, /* partial_inplace */ |
252b5132 RH |
611 | 0xffff, /* src_mask */ |
612 | 0xffff, /* dst_mask */ | |
b34976b6 | 613 | TRUE), /* pcrel_offset */ |
252b5132 RH |
614 | |
615 | /* A 21 bit branch. */ | |
616 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
617 | 2, /* rightshift */ | |
618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
619 | 21, /* bitsize */ | |
b34976b6 | 620 | TRUE, /* pc_relative */ |
252b5132 RH |
621 | 0, /* bitpos */ |
622 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 623 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 624 | "BRADDR", /* name */ |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
252b5132 RH |
626 | 0x1fffff, /* src_mask */ |
627 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 628 | TRUE), /* pcrel_offset */ |
252b5132 RH |
629 | |
630 | /* A hint for a jump to a register. */ | |
631 | HOWTO (R_ALPHA_HINT, /* type */ | |
632 | 2, /* rightshift */ | |
dfe57ca0 | 633 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 634 | 14, /* bitsize */ |
b34976b6 | 635 | TRUE, /* pc_relative */ |
252b5132 RH |
636 | 0, /* bitpos */ |
637 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 638 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 639 | "HINT", /* name */ |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
252b5132 RH |
641 | 0x3fff, /* src_mask */ |
642 | 0x3fff, /* dst_mask */ | |
b34976b6 | 643 | TRUE), /* pcrel_offset */ |
252b5132 RH |
644 | |
645 | /* 16 bit PC relative offset. */ | |
646 | HOWTO (R_ALPHA_SREL16, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | TRUE, /* pc_relative */ |
252b5132 RH |
651 | 0, /* bitpos */ |
652 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 653 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 654 | "SREL16", /* name */ |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
252b5132 RH |
656 | 0xffff, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | TRUE), /* pcrel_offset */ |
252b5132 RH |
659 | |
660 | /* 32 bit PC relative offset. */ | |
661 | HOWTO (R_ALPHA_SREL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
252b5132 RH |
666 | 0, /* bitpos */ |
667 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 668 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 669 | "SREL32", /* name */ |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
252b5132 RH |
671 | 0xffffffff, /* src_mask */ |
672 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
252b5132 RH |
674 | |
675 | /* A 64 bit PC relative offset. */ | |
676 | HOWTO (R_ALPHA_SREL64, /* type */ | |
677 | 0, /* rightshift */ | |
678 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 64, /* bitsize */ | |
b34976b6 | 680 | TRUE, /* pc_relative */ |
252b5132 RH |
681 | 0, /* bitpos */ |
682 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 683 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 684 | "SREL64", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
252b5132 RH |
686 | MINUS_ONE, /* src_mask */ |
687 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 688 | TRUE), /* pcrel_offset */ |
252b5132 | 689 | |
dfe57ca0 RH |
690 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
691 | SKIP_HOWTO (12), | |
692 | SKIP_HOWTO (13), | |
693 | SKIP_HOWTO (14), | |
694 | SKIP_HOWTO (15), | |
695 | SKIP_HOWTO (16), | |
252b5132 RH |
696 | |
697 | /* The high 16 bits of the displacement from GP to the target. */ | |
698 | HOWTO (R_ALPHA_GPRELHIGH, | |
699 | 0, /* rightshift */ | |
dfe57ca0 | 700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 701 | 16, /* bitsize */ |
b34976b6 | 702 | FALSE, /* pc_relative */ |
252b5132 RH |
703 | 0, /* bitpos */ |
704 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 705 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 706 | "GPRELHIGH", /* name */ |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
252b5132 RH |
708 | 0xffff, /* src_mask */ |
709 | 0xffff, /* dst_mask */ | |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
252b5132 RH |
711 | |
712 | /* The low 16 bits of the displacement from GP to the target. */ | |
713 | HOWTO (R_ALPHA_GPRELLOW, | |
714 | 0, /* rightshift */ | |
dfe57ca0 | 715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 716 | 16, /* bitsize */ |
b34976b6 | 717 | FALSE, /* pc_relative */ |
252b5132 RH |
718 | 0, /* bitpos */ |
719 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 720 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 721 | "GPRELLOW", /* name */ |
b34976b6 | 722 | FALSE, /* partial_inplace */ |
252b5132 RH |
723 | 0xffff, /* src_mask */ |
724 | 0xffff, /* dst_mask */ | |
b34976b6 | 725 | FALSE), /* pcrel_offset */ |
252b5132 RH |
726 | |
727 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 728 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 729 | 0, /* rightshift */ |
dfe57ca0 | 730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 731 | 16, /* bitsize */ |
b34976b6 | 732 | FALSE, /* pc_relative */ |
252b5132 RH |
733 | 0, /* bitpos */ |
734 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 735 | bfd_elf_generic_reloc, /* special_function */ |
dfe57ca0 | 736 | "GPREL16", /* name */ |
b34976b6 | 737 | FALSE, /* partial_inplace */ |
252b5132 RH |
738 | 0xffff, /* src_mask */ |
739 | 0xffff, /* dst_mask */ | |
b34976b6 | 740 | FALSE), /* pcrel_offset */ |
252b5132 | 741 | |
dfe57ca0 RH |
742 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
743 | SKIP_HOWTO (20), | |
744 | SKIP_HOWTO (21), | |
745 | SKIP_HOWTO (22), | |
746 | SKIP_HOWTO (23), | |
252b5132 | 747 | |
fe8bc63d | 748 | /* Misc ELF relocations. */ |
252b5132 RH |
749 | |
750 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
751 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
752 | is present because every other ELF has one, but should not be used | |
753 | because .dynbss is an ugly thing. */ | |
754 | HOWTO (R_ALPHA_COPY, | |
755 | 0, | |
756 | 0, | |
757 | 0, | |
b34976b6 | 758 | FALSE, |
252b5132 RH |
759 | 0, |
760 | complain_overflow_dont, | |
761 | bfd_elf_generic_reloc, | |
762 | "COPY", | |
b34976b6 | 763 | FALSE, |
252b5132 RH |
764 | 0, |
765 | 0, | |
b34976b6 | 766 | TRUE), |
252b5132 RH |
767 | |
768 | /* A dynamic relocation for a .got entry. */ | |
769 | HOWTO (R_ALPHA_GLOB_DAT, | |
770 | 0, | |
771 | 0, | |
772 | 0, | |
b34976b6 | 773 | FALSE, |
252b5132 RH |
774 | 0, |
775 | complain_overflow_dont, | |
776 | bfd_elf_generic_reloc, | |
777 | "GLOB_DAT", | |
b34976b6 | 778 | FALSE, |
252b5132 RH |
779 | 0, |
780 | 0, | |
b34976b6 | 781 | TRUE), |
252b5132 RH |
782 | |
783 | /* A dynamic relocation for a .plt entry. */ | |
784 | HOWTO (R_ALPHA_JMP_SLOT, | |
785 | 0, | |
786 | 0, | |
787 | 0, | |
b34976b6 | 788 | FALSE, |
252b5132 RH |
789 | 0, |
790 | complain_overflow_dont, | |
791 | bfd_elf_generic_reloc, | |
792 | "JMP_SLOT", | |
b34976b6 | 793 | FALSE, |
252b5132 RH |
794 | 0, |
795 | 0, | |
b34976b6 | 796 | TRUE), |
252b5132 RH |
797 | |
798 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
799 | HOWTO (R_ALPHA_RELATIVE, | |
800 | 0, | |
801 | 0, | |
802 | 0, | |
b34976b6 | 803 | FALSE, |
252b5132 RH |
804 | 0, |
805 | complain_overflow_dont, | |
806 | bfd_elf_generic_reloc, | |
807 | "RELATIVE", | |
b34976b6 | 808 | FALSE, |
252b5132 RH |
809 | 0, |
810 | 0, | |
b34976b6 | 811 | TRUE), |
7793f4d0 RH |
812 | |
813 | /* A 21 bit branch that adjusts for gp loads. */ | |
814 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
815 | 2, /* rightshift */ | |
816 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
817 | 21, /* bitsize */ | |
b34976b6 | 818 | TRUE, /* pc_relative */ |
7793f4d0 RH |
819 | 0, /* bitpos */ |
820 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 821 | bfd_elf_generic_reloc, /* special_function */ |
7793f4d0 | 822 | "BRSGP", /* name */ |
b34976b6 | 823 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
824 | 0x1fffff, /* src_mask */ |
825 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 826 | TRUE), /* pcrel_offset */ |
3765b1be RH |
827 | |
828 | /* Creates a tls_index for the symbol in the got. */ | |
829 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 16, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
3765b1be RH |
834 | 0, /* bitpos */ |
835 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 836 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 837 | "TLSGD", /* name */ |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
3765b1be RH |
839 | 0xffff, /* src_mask */ |
840 | 0xffff, /* dst_mask */ | |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
3765b1be RH |
842 | |
843 | /* Creates a tls_index for the (current) module in the got. */ | |
844 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 16, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
3765b1be RH |
849 | 0, /* bitpos */ |
850 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 851 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 852 | "TLSLDM", /* name */ |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
3765b1be RH |
854 | 0xffff, /* src_mask */ |
855 | 0xffff, /* dst_mask */ | |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
3765b1be RH |
857 | |
858 | /* A dynamic relocation for a DTP module entry. */ | |
859 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
860 | 0, /* rightshift */ | |
861 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 64, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
3765b1be RH |
864 | 0, /* bitpos */ |
865 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 866 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 867 | "DTPMOD64", /* name */ |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
3765b1be RH |
869 | MINUS_ONE, /* src_mask */ |
870 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
3765b1be RH |
872 | |
873 | /* Creates a 64-bit offset in the got for the displacement | |
874 | from DTP to the target. */ | |
875 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
876 | 0, /* rightshift */ | |
877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
3765b1be RH |
880 | 0, /* bitpos */ |
881 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 882 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 883 | "GOTDTPREL", /* name */ |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
3765b1be RH |
885 | 0xffff, /* src_mask */ |
886 | 0xffff, /* dst_mask */ | |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
3765b1be RH |
888 | |
889 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
890 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 64, /* bitsize */ | |
b34976b6 | 894 | FALSE, /* pc_relative */ |
3765b1be RH |
895 | 0, /* bitpos */ |
896 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 897 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 898 | "DTPREL64", /* name */ |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
3765b1be RH |
900 | MINUS_ONE, /* src_mask */ |
901 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 902 | FALSE), /* pcrel_offset */ |
3765b1be RH |
903 | |
904 | /* The high 16 bits of the displacement from DTP to the target. */ | |
905 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
908 | 16, /* bitsize */ | |
b34976b6 | 909 | FALSE, /* pc_relative */ |
3765b1be RH |
910 | 0, /* bitpos */ |
911 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 912 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 913 | "DTPRELHI", /* name */ |
b34976b6 | 914 | FALSE, /* partial_inplace */ |
3765b1be RH |
915 | 0xffff, /* src_mask */ |
916 | 0xffff, /* dst_mask */ | |
b34976b6 | 917 | FALSE), /* pcrel_offset */ |
3765b1be RH |
918 | |
919 | /* The low 16 bits of the displacement from DTP to the target. */ | |
920 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
921 | 0, /* rightshift */ | |
922 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 16, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
3765b1be RH |
925 | 0, /* bitpos */ |
926 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 927 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 928 | "DTPRELLO", /* name */ |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
3765b1be RH |
930 | 0xffff, /* src_mask */ |
931 | 0xffff, /* dst_mask */ | |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
3765b1be RH |
933 | |
934 | /* A 16-bit displacement from DTP to the target. */ | |
935 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
936 | 0, /* rightshift */ | |
937 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 16, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
3765b1be RH |
940 | 0, /* bitpos */ |
941 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 942 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 943 | "DTPREL16", /* name */ |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
3765b1be RH |
945 | 0xffff, /* src_mask */ |
946 | 0xffff, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
3765b1be RH |
948 | |
949 | /* Creates a 64-bit offset in the got for the displacement | |
950 | from TP to the target. */ | |
951 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
952 | 0, /* rightshift */ | |
953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 16, /* bitsize */ | |
b34976b6 | 955 | FALSE, /* pc_relative */ |
3765b1be RH |
956 | 0, /* bitpos */ |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 958 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 959 | "GOTTPREL", /* name */ |
b34976b6 | 960 | FALSE, /* partial_inplace */ |
3765b1be RH |
961 | 0xffff, /* src_mask */ |
962 | 0xffff, /* dst_mask */ | |
b34976b6 | 963 | FALSE), /* pcrel_offset */ |
3765b1be RH |
964 | |
965 | /* A dynamic relocation for a displacement from TP to the target. */ | |
966 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
967 | 0, /* rightshift */ | |
968 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 64, /* bitsize */ | |
b34976b6 | 970 | FALSE, /* pc_relative */ |
3765b1be RH |
971 | 0, /* bitpos */ |
972 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 973 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 974 | "TPREL64", /* name */ |
b34976b6 | 975 | FALSE, /* partial_inplace */ |
3765b1be RH |
976 | MINUS_ONE, /* src_mask */ |
977 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 978 | FALSE), /* pcrel_offset */ |
3765b1be RH |
979 | |
980 | /* The high 16 bits of the displacement from TP to the target. */ | |
981 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
982 | 0, /* rightshift */ | |
983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 16, /* bitsize */ | |
b34976b6 | 985 | FALSE, /* pc_relative */ |
3765b1be RH |
986 | 0, /* bitpos */ |
987 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 988 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 989 | "TPRELHI", /* name */ |
b34976b6 | 990 | FALSE, /* partial_inplace */ |
3765b1be RH |
991 | 0xffff, /* src_mask */ |
992 | 0xffff, /* dst_mask */ | |
b34976b6 | 993 | FALSE), /* pcrel_offset */ |
3765b1be RH |
994 | |
995 | /* The low 16 bits of the displacement from TP to the target. */ | |
996 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 16, /* bitsize */ | |
b34976b6 | 1000 | FALSE, /* pc_relative */ |
3765b1be RH |
1001 | 0, /* bitpos */ |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 1003 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 1004 | "TPRELLO", /* name */ |
b34976b6 | 1005 | FALSE, /* partial_inplace */ |
3765b1be RH |
1006 | 0xffff, /* src_mask */ |
1007 | 0xffff, /* dst_mask */ | |
b34976b6 | 1008 | FALSE), /* pcrel_offset */ |
3765b1be RH |
1009 | |
1010 | /* A 16-bit displacement from TP to the target. */ | |
1011 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
1012 | 0, /* rightshift */ | |
1013 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 16, /* bitsize */ | |
b34976b6 | 1015 | FALSE, /* pc_relative */ |
3765b1be RH |
1016 | 0, /* bitpos */ |
1017 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 1018 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 1019 | "TPREL16", /* name */ |
b34976b6 | 1020 | FALSE, /* partial_inplace */ |
3765b1be RH |
1021 | 0xffff, /* src_mask */ |
1022 | 0xffff, /* dst_mask */ | |
b34976b6 | 1023 | FALSE), /* pcrel_offset */ |
252b5132 RH |
1024 | }; |
1025 | ||
252b5132 RH |
1026 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
1027 | ||
1028 | struct elf_reloc_map | |
1029 | { | |
1030 | bfd_reloc_code_real_type bfd_reloc_val; | |
1031 | int elf_reloc_val; | |
1032 | }; | |
1033 | ||
1034 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1035 | { | |
dfe57ca0 RH |
1036 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1037 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1038 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1039 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1040 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1041 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1042 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1043 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1044 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1045 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1046 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1047 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1048 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1049 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1050 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1051 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1052 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1053 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1054 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1055 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1056 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1057 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1058 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1059 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1060 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1061 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1062 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1063 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1064 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1065 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1066 | }; |
1067 | ||
1068 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1069 | ||
1070 | static reloc_howto_type * | |
a7519a3c RH |
1071 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1072 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1073 | { |
1074 | const struct elf_reloc_map *i, *e; | |
1075 | i = e = elf64_alpha_reloc_map; | |
1076 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1077 | for (; i != e; ++i) | |
1078 | { | |
1079 | if (i->bfd_reloc_val == code) | |
1080 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1081 | } | |
1082 | return 0; | |
1083 | } | |
1084 | ||
157090f7 AM |
1085 | static reloc_howto_type * |
1086 | elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1087 | const char *r_name) | |
1088 | { | |
1089 | unsigned int i; | |
1090 | ||
1091 | for (i = 0; | |
1092 | i < (sizeof (elf64_alpha_howto_table) | |
1093 | / sizeof (elf64_alpha_howto_table[0])); | |
1094 | i++) | |
1095 | if (elf64_alpha_howto_table[i].name != NULL | |
1096 | && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0) | |
1097 | return &elf64_alpha_howto_table[i]; | |
1098 | ||
1099 | return NULL; | |
1100 | } | |
1101 | ||
252b5132 RH |
1102 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ |
1103 | ||
f3185997 | 1104 | static bfd_boolean |
0aa13fee | 1105 | elf64_alpha_info_to_howto (bfd *abfd, arelent *cache_ptr, |
a7519a3c | 1106 | Elf_Internal_Rela *dst) |
252b5132 | 1107 | { |
a7519a3c | 1108 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
cd21f5da NC |
1109 | |
1110 | if (r_type >= R_ALPHA_max) | |
1111 | { | |
695344c0 | 1112 | /* xgettext:c-format */ |
0aa13fee | 1113 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 1114 | abfd, r_type); |
cd21f5da | 1115 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 1116 | return FALSE; |
cd21f5da | 1117 | } |
252b5132 | 1118 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; |
f3185997 | 1119 | return TRUE; |
252b5132 | 1120 | } |
3765b1be RH |
1121 | |
1122 | /* These two relocations create a two-word entry in the got. */ | |
1123 | #define alpha_got_entry_size(r_type) \ | |
1124 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1125 | |
1126 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1127 | #define alpha_get_dtprel_base(info) \ |
1128 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1129 | |
1130 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1131 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1132 | #define alpha_get_tprel_base(info) \ |
1133 | (elf_hash_table (info)->tls_sec->vma \ | |
1134 | - align_power ((bfd_vma) 16, \ | |
1135 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1136 | \f |
a7519a3c RH |
1137 | /* Handle an Alpha specific section when reading an object file. This |
1138 | is called when bfd_section_from_shdr finds a section with an unknown | |
bf577467 | 1139 | type. */ |
252b5132 | 1140 | |
a7519a3c RH |
1141 | static bfd_boolean |
1142 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1143 | Elf_Internal_Shdr *hdr, | |
1144 | const char *name, | |
1145 | int shindex) | |
252b5132 | 1146 | { |
a7519a3c RH |
1147 | asection *newsect; |
1148 | ||
1149 | /* There ought to be a place to keep ELF backend specific flags, but | |
1150 | at the moment there isn't one. We just keep track of the | |
1151 | sections by their name, instead. Fortunately, the ABI gives | |
1152 | suggested names for all the MIPS specific sections, so we will | |
1153 | probably get away with this. */ | |
1154 | switch (hdr->sh_type) | |
1155 | { | |
1156 | case SHT_ALPHA_DEBUG: | |
1157 | if (strcmp (name, ".mdebug") != 0) | |
1158 | return FALSE; | |
1159 | break; | |
1160 | default: | |
1161 | return FALSE; | |
1162 | } | |
252b5132 | 1163 | |
a7519a3c RH |
1164 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1165 | return FALSE; | |
1166 | newsect = hdr->bfd_section; | |
252b5132 | 1167 | |
a7519a3c | 1168 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1169 | { |
fd361982 AM |
1170 | if (!bfd_set_section_flags (newsect, |
1171 | bfd_section_flags (newsect) | SEC_DEBUGGING)) | |
a7519a3c | 1172 | return FALSE; |
252b5132 | 1173 | } |
a7519a3c RH |
1174 | |
1175 | return TRUE; | |
252b5132 RH |
1176 | } |
1177 | ||
a7519a3c RH |
1178 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1179 | ||
b34976b6 | 1180 | static bfd_boolean |
8c803a2d | 1181 | elf64_alpha_section_flags (const Elf_Internal_Shdr *hdr) |
252b5132 | 1182 | { |
a7519a3c | 1183 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
8c803a2d | 1184 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
252b5132 | 1185 | |
a7519a3c RH |
1186 | return TRUE; |
1187 | } | |
252b5132 | 1188 | |
a7519a3c RH |
1189 | /* Set the correct type for an Alpha ELF section. We do this by the |
1190 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1191 | |
a7519a3c RH |
1192 | static bfd_boolean |
1193 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1194 | { | |
1195 | register const char *name; | |
1196 | ||
fd361982 | 1197 | name = bfd_section_name (sec); |
a7519a3c RH |
1198 | |
1199 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1200 | { |
a7519a3c RH |
1201 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1202 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
07d6d2b8 | 1203 | entsize of 0. FIXME: Does this matter? */ |
a7519a3c RH |
1204 | if ((abfd->flags & DYNAMIC) != 0 ) |
1205 | hdr->sh_entsize = 0; | |
1206 | else | |
1207 | hdr->sh_entsize = 1; | |
252b5132 | 1208 | } |
a7519a3c RH |
1209 | else if ((sec->flags & SEC_SMALL_DATA) |
1210 | || strcmp (name, ".sdata") == 0 | |
1211 | || strcmp (name, ".sbss") == 0 | |
1212 | || strcmp (name, ".lit4") == 0 | |
1213 | || strcmp (name, ".lit8") == 0) | |
1214 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1215 | |
a7519a3c RH |
1216 | return TRUE; |
1217 | } | |
252b5132 | 1218 | |
a7519a3c RH |
1219 | /* Hook called by the linker routine which adds symbols from an object |
1220 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1221 | ||
1222 | static bfd_boolean | |
1223 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1224 | Elf_Internal_Sym *sym, | |
1225 | const char **namep ATTRIBUTE_UNUSED, | |
1226 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1227 | asection **secp, bfd_vma *valp) | |
1228 | { | |
1229 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 1230 | && !bfd_link_relocatable (info) |
a7519a3c | 1231 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 | 1232 | { |
a7519a3c RH |
1233 | /* Common symbols less than or equal to -G nn bytes are |
1234 | automatically put into .sbss. */ | |
ffcb7aff | 1235 | |
a7519a3c | 1236 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1237 | |
a7519a3c | 1238 | if (scomm == NULL) |
252b5132 | 1239 | { |
a7519a3c RH |
1240 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1241 | (SEC_ALLOC | |
1242 | | SEC_IS_COMMON | |
1243 | | SEC_LINKER_CREATED)); | |
1244 | if (scomm == NULL) | |
1245 | return FALSE; | |
1246 | } | |
ffcb7aff | 1247 | |
a7519a3c RH |
1248 | *secp = scomm; |
1249 | *valp = sym->st_size; | |
1250 | } | |
ffcb7aff | 1251 | |
a7519a3c RH |
1252 | return TRUE; |
1253 | } | |
252b5132 | 1254 | |
a7519a3c | 1255 | /* Create the .got section. */ |
252b5132 | 1256 | |
a7519a3c RH |
1257 | static bfd_boolean |
1258 | elf64_alpha_create_got_section (bfd *abfd, | |
1259 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1260 | { | |
85d162e6 | 1261 | flagword flags; |
a7519a3c | 1262 | asection *s; |
252b5132 | 1263 | |
0ffa91dd NC |
1264 | if (! is_alpha_elf (abfd)) |
1265 | return FALSE; | |
1266 | ||
85d162e6 AM |
1267 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1268 | | SEC_LINKER_CREATED); | |
1269 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
a7519a3c | 1270 | if (s == NULL |
fd361982 | 1271 | || !bfd_set_section_alignment (s, 3)) |
a7519a3c | 1272 | return FALSE; |
252b5132 | 1273 | |
a7519a3c | 1274 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1275 | |
85d162e6 AM |
1276 | /* Make sure the object's gotobj is set to itself so that we default |
1277 | to every object with its own .got. We'll merge .gots later once | |
1278 | we've collected each object's info. */ | |
1279 | alpha_elf_tdata (abfd)->gotobj = abfd; | |
1280 | ||
a7519a3c RH |
1281 | return TRUE; |
1282 | } | |
252b5132 | 1283 | |
a7519a3c | 1284 | /* Create all the dynamic sections. */ |
252b5132 | 1285 | |
a7519a3c RH |
1286 | static bfd_boolean |
1287 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1288 | { | |
1289 | asection *s; | |
85d162e6 | 1290 | flagword flags; |
a7519a3c | 1291 | struct elf_link_hash_entry *h; |
252b5132 | 1292 | |
0ffa91dd NC |
1293 | if (! is_alpha_elf (abfd)) |
1294 | return FALSE; | |
1295 | ||
a7519a3c | 1296 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1297 | |
85d162e6 AM |
1298 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1299 | | SEC_LINKER_CREATED | |
1300 | | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); | |
1301 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); | |
ce558b89 | 1302 | elf_hash_table (info)->splt = s; |
fd361982 | 1303 | if (s == NULL || ! bfd_set_section_alignment (s, 4)) |
a7519a3c | 1304 | return FALSE; |
252b5132 | 1305 | |
a7519a3c RH |
1306 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1307 | .plt section. */ | |
7325306f RS |
1308 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
1309 | "_PROCEDURE_LINKAGE_TABLE_"); | |
1310 | elf_hash_table (info)->hplt = h; | |
1311 | if (h == NULL) | |
a7519a3c | 1312 | return FALSE; |
d6ad34f6 | 1313 | |
85d162e6 AM |
1314 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1315 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1316 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); | |
ce558b89 | 1317 | elf_hash_table (info)->srelplt = s; |
fd361982 | 1318 | if (s == NULL || ! bfd_set_section_alignment (s, 3)) |
a7519a3c | 1319 | return FALSE; |
252b5132 | 1320 | |
6ec7057a RH |
1321 | if (elf64_alpha_use_secureplt) |
1322 | { | |
85d162e6 AM |
1323 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
1324 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
ce558b89 | 1325 | elf_hash_table (info)->sgotplt = s; |
fd361982 | 1326 | if (s == NULL || ! bfd_set_section_alignment (s, 3)) |
6ec7057a RH |
1327 | return FALSE; |
1328 | } | |
1329 | ||
a7519a3c RH |
1330 | /* We may or may not have created a .got section for this object, but |
1331 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1332 | |
85d162e6 AM |
1333 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
1334 | { | |
1335 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1336 | return FALSE; | |
1337 | } | |
1cd6895c | 1338 | |
85d162e6 AM |
1339 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1340 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1341 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); | |
ce558b89 | 1342 | elf_hash_table (info)->srelgot = s; |
a7519a3c | 1343 | if (s == NULL |
fd361982 | 1344 | || !bfd_set_section_alignment (s, 3)) |
a7519a3c | 1345 | return FALSE; |
252b5132 | 1346 | |
a7519a3c RH |
1347 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1348 | dynobj's .got section. We don't do this in the linker script | |
1349 | because we don't want to define the symbol if we are not creating | |
1350 | a global offset table. */ | |
d98685ac AM |
1351 | h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, |
1352 | "_GLOBAL_OFFSET_TABLE_"); | |
a7519a3c | 1353 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
1354 | if (h == NULL) |
1355 | return FALSE; | |
252b5132 | 1356 | |
a7519a3c | 1357 | return TRUE; |
252b5132 | 1358 | } |
a7519a3c RH |
1359 | \f |
1360 | /* Read ECOFF debugging information from a .mdebug section into a | |
1361 | ecoff_debug_info structure. */ | |
252b5132 | 1362 | |
a7519a3c RH |
1363 | static bfd_boolean |
1364 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1365 | struct ecoff_debug_info *debug) | |
252b5132 | 1366 | { |
a7519a3c RH |
1367 | HDRR *symhdr; |
1368 | const struct ecoff_debug_swap *swap; | |
1369 | char *ext_hdr = NULL; | |
252b5132 | 1370 | |
a7519a3c RH |
1371 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1372 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1373 | |
a7519a3c RH |
1374 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1375 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1376 | goto error_return; | |
252b5132 | 1377 | |
a7519a3c RH |
1378 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1379 | swap->external_hdr_size)) | |
1380 | goto error_return; | |
252b5132 | 1381 | |
a7519a3c RH |
1382 | symhdr = &debug->symbolic_header; |
1383 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1384 | |
a7519a3c RH |
1385 | /* The symbolic header contains absolute file offsets and sizes to |
1386 | read. */ | |
1387 | #define READ(ptr, offset, count, size, type) \ | |
1f4361a7 | 1388 | do \ |
a7519a3c | 1389 | { \ |
1f4361a7 AM |
1390 | size_t amt; \ |
1391 | debug->ptr = NULL; \ | |
1392 | if (symhdr->count == 0) \ | |
1393 | break; \ | |
1394 | if (_bfd_mul_overflow (size, symhdr->count, &amt)) \ | |
1395 | { \ | |
1396 | bfd_set_error (bfd_error_file_too_big); \ | |
1397 | goto error_return; \ | |
1398 | } \ | |
2bb3687b | 1399 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0) \ |
a7519a3c | 1400 | goto error_return; \ |
2bb3687b AM |
1401 | debug->ptr = (type) _bfd_malloc_and_read (abfd, amt, amt); \ |
1402 | if (debug->ptr == NULL) \ | |
a7519a3c | 1403 | goto error_return; \ |
1f4361a7 | 1404 | } while (0) |
fe8bc63d | 1405 | |
a7519a3c | 1406 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
2c3fc389 NC |
1407 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1408 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1409 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1410 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
a7519a3c RH |
1411 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1412 | union aux_ext *); | |
1413 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1414 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2c3fc389 NC |
1415 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1416 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1417 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
a7519a3c | 1418 | #undef READ |
252b5132 | 1419 | |
a7519a3c | 1420 | debug->fdr = NULL; |
252b5132 | 1421 | |
a7519a3c | 1422 | return TRUE; |
252b5132 | 1423 | |
a7519a3c RH |
1424 | error_return: |
1425 | if (ext_hdr != NULL) | |
1426 | free (ext_hdr); | |
1427 | if (debug->line != NULL) | |
1428 | free (debug->line); | |
1429 | if (debug->external_dnr != NULL) | |
1430 | free (debug->external_dnr); | |
1431 | if (debug->external_pdr != NULL) | |
1432 | free (debug->external_pdr); | |
1433 | if (debug->external_sym != NULL) | |
1434 | free (debug->external_sym); | |
1435 | if (debug->external_opt != NULL) | |
1436 | free (debug->external_opt); | |
1437 | if (debug->external_aux != NULL) | |
1438 | free (debug->external_aux); | |
1439 | if (debug->ss != NULL) | |
1440 | free (debug->ss); | |
1441 | if (debug->ssext != NULL) | |
1442 | free (debug->ssext); | |
1443 | if (debug->external_fdr != NULL) | |
1444 | free (debug->external_fdr); | |
1445 | if (debug->external_rfd != NULL) | |
1446 | free (debug->external_rfd); | |
1447 | if (debug->external_ext != NULL) | |
1448 | free (debug->external_ext); | |
1449 | return FALSE; | |
252b5132 RH |
1450 | } |
1451 | ||
a7519a3c RH |
1452 | /* Alpha ELF local labels start with '$'. */ |
1453 | ||
b34976b6 | 1454 | static bfd_boolean |
a7519a3c | 1455 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1456 | { |
a7519a3c RH |
1457 | return name[0] == '$'; |
1458 | } | |
9e756d64 | 1459 | |
a7519a3c | 1460 | static bfd_boolean |
fb167eb2 AM |
1461 | elf64_alpha_find_nearest_line (bfd *abfd, asymbol **symbols, |
1462 | asection *section, bfd_vma offset, | |
1463 | const char **filename_ptr, | |
a7519a3c | 1464 | const char **functionname_ptr, |
fb167eb2 AM |
1465 | unsigned int *line_ptr, |
1466 | unsigned int *discriminator_ptr) | |
a7519a3c RH |
1467 | { |
1468 | asection *msec; | |
252b5132 | 1469 | |
fb167eb2 | 1470 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a7519a3c | 1471 | filename_ptr, functionname_ptr, |
fb167eb2 | 1472 | line_ptr, discriminator_ptr, |
9defd221 | 1473 | dwarf_debug_sections, |
7f3bf384 AM |
1474 | &elf_tdata (abfd)->dwarf2_find_line_info) |
1475 | == 1) | |
b34976b6 | 1476 | return TRUE; |
9e756d64 | 1477 | |
a7519a3c RH |
1478 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1479 | if (msec != NULL) | |
1bbc9cec | 1480 | { |
a7519a3c | 1481 | flagword origflags; |
698600e4 | 1482 | struct alpha_elf_find_line *fi; |
a7519a3c RH |
1483 | const struct ecoff_debug_swap * const swap = |
1484 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1485 | |
a7519a3c RH |
1486 | /* If we are called during a link, alpha_elf_final_link may have |
1487 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1488 | if appropriate (which it normally will be). */ | |
1489 | origflags = msec->flags; | |
1490 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1491 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1492 | |
698600e4 | 1493 | fi = alpha_elf_tdata (abfd)->find_line_info; |
a7519a3c RH |
1494 | if (fi == NULL) |
1495 | { | |
1496 | bfd_size_type external_fdr_size; | |
1497 | char *fraw_src; | |
1498 | char *fraw_end; | |
1499 | struct fdr *fdr_ptr; | |
698600e4 | 1500 | bfd_size_type amt = sizeof (struct alpha_elf_find_line); |
9e756d64 | 1501 | |
698600e4 | 1502 | fi = (struct alpha_elf_find_line *) bfd_zalloc (abfd, amt); |
a7519a3c RH |
1503 | if (fi == NULL) |
1504 | { | |
1505 | msec->flags = origflags; | |
1506 | return FALSE; | |
1507 | } | |
9e756d64 | 1508 | |
a7519a3c RH |
1509 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1510 | { | |
1511 | msec->flags = origflags; | |
1512 | return FALSE; | |
1513 | } | |
9e756d64 | 1514 | |
a7519a3c RH |
1515 | /* Swap in the FDR information. */ |
1516 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1517 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1518 | if (fi->d.fdr == NULL) | |
1519 | { | |
1520 | msec->flags = origflags; | |
1521 | return FALSE; | |
1522 | } | |
1523 | external_fdr_size = swap->external_fdr_size; | |
1524 | fdr_ptr = fi->d.fdr; | |
1525 | fraw_src = (char *) fi->d.external_fdr; | |
1526 | fraw_end = (fraw_src | |
1527 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1528 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2c3fc389 | 1529 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
9e756d64 | 1530 | |
698600e4 | 1531 | alpha_elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1532 | |
a7519a3c | 1533 | /* Note that we don't bother to ever free this information. |
07d6d2b8 AM |
1534 | find_nearest_line is either called all the time, as in |
1535 | objdump -l, so the information should be saved, or it is | |
1536 | rarely called, as in ld error messages, so the memory | |
1537 | wasted is unimportant. Still, it would probably be a | |
1538 | good idea for free_cached_info to throw it away. */ | |
a7519a3c | 1539 | } |
9e756d64 | 1540 | |
a7519a3c RH |
1541 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1542 | &fi->i, filename_ptr, functionname_ptr, | |
1543 | line_ptr)) | |
1544 | { | |
1545 | msec->flags = origflags; | |
1546 | return TRUE; | |
1547 | } | |
9e756d64 | 1548 | |
a7519a3c | 1549 | msec->flags = origflags; |
9e756d64 | 1550 | } |
9e756d64 | 1551 | |
a7519a3c | 1552 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1553 | |
fb167eb2 | 1554 | return _bfd_elf_find_nearest_line (abfd, symbols, section, offset, |
a7519a3c | 1555 | filename_ptr, functionname_ptr, |
fb167eb2 | 1556 | line_ptr, discriminator_ptr); |
9e756d64 | 1557 | } |
a7519a3c RH |
1558 | \f |
1559 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1560 | |
a7519a3c | 1561 | struct extsym_info |
9e756d64 | 1562 | { |
a7519a3c RH |
1563 | bfd *abfd; |
1564 | struct bfd_link_info *info; | |
1565 | struct ecoff_debug_info *debug; | |
1566 | const struct ecoff_debug_swap *swap; | |
1567 | bfd_boolean failed; | |
1568 | }; | |
9e756d64 | 1569 | |
a7519a3c | 1570 | static bfd_boolean |
2c3fc389 | 1571 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, void * data) |
a7519a3c RH |
1572 | { |
1573 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1574 | bfd_boolean strip; | |
1575 | asection *sec, *output_section; | |
9e756d64 | 1576 | |
a7519a3c RH |
1577 | if (h->root.indx == -2) |
1578 | strip = FALSE; | |
1579 | else if ((h->root.def_dynamic | |
1580 | || h->root.ref_dynamic | |
1581 | || h->root.root.type == bfd_link_hash_new) | |
1582 | && !h->root.def_regular | |
1583 | && !h->root.ref_regular) | |
1584 | strip = TRUE; | |
1585 | else if (einfo->info->strip == strip_all | |
1586 | || (einfo->info->strip == strip_some | |
1587 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1588 | h->root.root.root.string, | |
1589 | FALSE, FALSE) == NULL)) | |
1590 | strip = TRUE; | |
1591 | else | |
1592 | strip = FALSE; | |
9e756d64 | 1593 | |
a7519a3c | 1594 | if (strip) |
b34976b6 | 1595 | return TRUE; |
9e756d64 | 1596 | |
a7519a3c | 1597 | if (h->esym.ifd == -2) |
9e756d64 | 1598 | { |
a7519a3c RH |
1599 | h->esym.jmptbl = 0; |
1600 | h->esym.cobol_main = 0; | |
1601 | h->esym.weakext = 0; | |
1602 | h->esym.reserved = 0; | |
1603 | h->esym.ifd = ifdNil; | |
1604 | h->esym.asym.value = 0; | |
1605 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1606 | |
a7519a3c RH |
1607 | if (h->root.root.type != bfd_link_hash_defined |
1608 | && h->root.root.type != bfd_link_hash_defweak) | |
1609 | h->esym.asym.sc = scAbs; | |
1610 | else | |
1611 | { | |
1612 | const char *name; | |
9e756d64 | 1613 | |
a7519a3c RH |
1614 | sec = h->root.root.u.def.section; |
1615 | output_section = sec->output_section; | |
9e756d64 | 1616 | |
a7519a3c RH |
1617 | /* When making a shared library and symbol h is the one from |
1618 | the another shared library, OUTPUT_SECTION may be null. */ | |
1619 | if (output_section == NULL) | |
1620 | h->esym.asym.sc = scUndefined; | |
1621 | else | |
1622 | { | |
fd361982 | 1623 | name = bfd_section_name (output_section); |
9e756d64 | 1624 | |
a7519a3c RH |
1625 | if (strcmp (name, ".text") == 0) |
1626 | h->esym.asym.sc = scText; | |
1627 | else if (strcmp (name, ".data") == 0) | |
1628 | h->esym.asym.sc = scData; | |
1629 | else if (strcmp (name, ".sdata") == 0) | |
1630 | h->esym.asym.sc = scSData; | |
1631 | else if (strcmp (name, ".rodata") == 0 | |
1632 | || strcmp (name, ".rdata") == 0) | |
1633 | h->esym.asym.sc = scRData; | |
1634 | else if (strcmp (name, ".bss") == 0) | |
1635 | h->esym.asym.sc = scBss; | |
1636 | else if (strcmp (name, ".sbss") == 0) | |
1637 | h->esym.asym.sc = scSBss; | |
1638 | else if (strcmp (name, ".init") == 0) | |
1639 | h->esym.asym.sc = scInit; | |
1640 | else if (strcmp (name, ".fini") == 0) | |
1641 | h->esym.asym.sc = scFini; | |
1642 | else | |
1643 | h->esym.asym.sc = scAbs; | |
1644 | } | |
1645 | } | |
9e756d64 | 1646 | |
a7519a3c RH |
1647 | h->esym.asym.reserved = 0; |
1648 | h->esym.asym.index = indexNil; | |
1649 | } | |
9e756d64 | 1650 | |
a7519a3c RH |
1651 | if (h->root.root.type == bfd_link_hash_common) |
1652 | h->esym.asym.value = h->root.root.u.c.size; | |
1653 | else if (h->root.root.type == bfd_link_hash_defined | |
1654 | || h->root.root.type == bfd_link_hash_defweak) | |
1655 | { | |
1656 | if (h->esym.asym.sc == scCommon) | |
1657 | h->esym.asym.sc = scBss; | |
1658 | else if (h->esym.asym.sc == scSCommon) | |
1659 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1660 | |
a7519a3c RH |
1661 | sec = h->root.root.u.def.section; |
1662 | output_section = sec->output_section; | |
1663 | if (output_section != NULL) | |
1664 | h->esym.asym.value = (h->root.root.u.def.value | |
1665 | + sec->output_offset | |
1666 | + output_section->vma); | |
1667 | else | |
1668 | h->esym.asym.value = 0; | |
1669 | } | |
9e756d64 | 1670 | |
a7519a3c RH |
1671 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1672 | h->root.root.root.string, | |
1673 | &h->esym)) | |
1674 | { | |
1675 | einfo->failed = TRUE; | |
1676 | return FALSE; | |
9e756d64 RH |
1677 | } |
1678 | ||
a7519a3c RH |
1679 | return TRUE; |
1680 | } | |
1681 | \f | |
1682 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1683 | |
a7519a3c RH |
1684 | static struct alpha_elf_got_entry * |
1685 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1686 | unsigned long r_type, unsigned long r_symndx, | |
1687 | bfd_vma r_addend) | |
1688 | { | |
1689 | struct alpha_elf_got_entry *gotent; | |
1690 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1691 | |
a7519a3c RH |
1692 | if (h) |
1693 | slot = &h->got_entries; | |
1694 | else | |
1695 | { | |
1696 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1697 | |
a7519a3c | 1698 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1699 | |
a7519a3c RH |
1700 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1701 | if (!local_got_entries) | |
1702 | { | |
1703 | bfd_size_type size; | |
1704 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1705 | |
a7519a3c RH |
1706 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1707 | size = symtab_hdr->sh_info; | |
1708 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1709 | |
a7519a3c RH |
1710 | local_got_entries |
1711 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1712 | if (!local_got_entries) | |
1713 | return NULL; | |
1714 | ||
1715 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1716 | } | |
1717 | ||
1718 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1719 | } |
1720 | ||
a7519a3c RH |
1721 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1722 | if (gotent->gotobj == abfd | |
1723 | && gotent->reloc_type == r_type | |
1724 | && gotent->addend == r_addend) | |
1725 | break; | |
1726 | ||
1727 | if (!gotent) | |
9e756d64 | 1728 | { |
a7519a3c | 1729 | int entry_size; |
986f0783 | 1730 | size_t amt; |
9e756d64 | 1731 | |
a7519a3c RH |
1732 | amt = sizeof (struct alpha_elf_got_entry); |
1733 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1734 | if (!gotent) | |
1735 | return NULL; | |
9e756d64 | 1736 | |
a7519a3c RH |
1737 | gotent->gotobj = abfd; |
1738 | gotent->addend = r_addend; | |
1739 | gotent->got_offset = -1; | |
6ec7057a | 1740 | gotent->plt_offset = -1; |
a7519a3c RH |
1741 | gotent->use_count = 1; |
1742 | gotent->reloc_type = r_type; | |
1743 | gotent->reloc_done = 0; | |
1744 | gotent->reloc_xlated = 0; | |
9e756d64 | 1745 | |
a7519a3c RH |
1746 | gotent->next = *slot; |
1747 | *slot = gotent; | |
9e756d64 | 1748 | |
a7519a3c RH |
1749 | entry_size = alpha_got_entry_size (r_type); |
1750 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1751 | if (!h) | |
1752 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1753 | } |
a7519a3c RH |
1754 | else |
1755 | gotent->use_count += 1; | |
9e756d64 | 1756 | |
a7519a3c | 1757 | return gotent; |
9e756d64 RH |
1758 | } |
1759 | ||
6ec7057a RH |
1760 | static bfd_boolean |
1761 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1762 | { | |
1763 | return ((ah->root.type == STT_FUNC | |
1764 | || ah->root.root.type == bfd_link_hash_undefweak | |
1765 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1766 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1767 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1768 | } |
1769 | ||
6fc5bb57 AM |
1770 | /* Whether to sort relocs output by ld -r or ld --emit-relocs, by r_offset. |
1771 | Don't do so for code sections. We want to keep ordering of LITERAL/LITUSE | |
1772 | as is. On the other hand, elf-eh-frame.c processing requires .eh_frame | |
1773 | relocs to be sorted. */ | |
1774 | ||
1775 | static bfd_boolean | |
1776 | elf64_alpha_sort_relocs_p (asection *sec) | |
1777 | { | |
1778 | return (sec->flags & SEC_CODE) == 0; | |
1779 | } | |
1780 | ||
1781 | ||
a7519a3c RH |
1782 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1783 | ||
b34976b6 | 1784 | static bfd_boolean |
a7519a3c RH |
1785 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1786 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1787 | { |
a7519a3c RH |
1788 | bfd *dynobj; |
1789 | asection *sreloc; | |
252b5132 | 1790 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1791 | struct alpha_elf_link_hash_entry **sym_hashes; |
1792 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1793 | |
0e1862bb | 1794 | if (bfd_link_relocatable (info)) |
a7519a3c | 1795 | return TRUE; |
252b5132 | 1796 | |
a7519a3c RH |
1797 | /* Don't do anything special with non-loaded, non-alloced sections. |
1798 | In particular, any relocs in such sections should not affect GOT | |
1799 | and PLT reference counting (ie. we don't allow them to create GOT | |
1800 | or PLT entries), there's no possibility or desire to optimize TLS | |
1801 | relocs, and there's not much point in propagating relocs to shared | |
1802 | libs that the dynamic linker won't relocate. */ | |
1803 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1804 | return TRUE; |
252b5132 | 1805 | |
0ffa91dd NC |
1806 | BFD_ASSERT (is_alpha_elf (abfd)); |
1807 | ||
1808 | dynobj = elf_hash_table (info)->dynobj; | |
a7519a3c | 1809 | if (dynobj == NULL) |
0ffa91dd | 1810 | elf_hash_table (info)->dynobj = dynobj = abfd; |
252b5132 | 1811 | |
a7519a3c | 1812 | sreloc = NULL; |
0ffa91dd NC |
1813 | symtab_hdr = &elf_symtab_hdr (abfd); |
1814 | sym_hashes = alpha_elf_sym_hashes (abfd); | |
a7519a3c RH |
1815 | |
1816 | relend = relocs + sec->reloc_count; | |
1817 | for (rel = relocs; rel < relend; ++rel) | |
1818 | { | |
1819 | enum { | |
1820 | NEED_GOT = 1, | |
1821 | NEED_GOT_ENTRY = 2, | |
1822 | NEED_DYNREL = 4 | |
1823 | }; | |
1824 | ||
1825 | unsigned long r_symndx, r_type; | |
1826 | struct alpha_elf_link_hash_entry *h; | |
1827 | unsigned int gotent_flags; | |
1828 | bfd_boolean maybe_dynamic; | |
1829 | unsigned int need; | |
1830 | bfd_vma addend; | |
1831 | ||
1832 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1833 | if (r_symndx < symtab_hdr->sh_info) | |
1834 | h = NULL; | |
1835 | else | |
1836 | { | |
1837 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1838 | |
a7519a3c RH |
1839 | while (h->root.root.type == bfd_link_hash_indirect |
1840 | || h->root.root.type == bfd_link_hash_warning) | |
1841 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1842 | |
81fbe831 AM |
1843 | /* PR15323, ref flags aren't set for references in the same |
1844 | object. */ | |
a7519a3c RH |
1845 | h->root.ref_regular = 1; |
1846 | } | |
252b5132 | 1847 | |
a7519a3c | 1848 | /* We can only get preliminary data on whether a symbol is |
07d6d2b8 AM |
1849 | locally or externally defined, as not all of the input files |
1850 | have yet been processed. Do something with what we know, as | |
1851 | this may help reduce memory usage and processing time later. */ | |
a7519a3c | 1852 | maybe_dynamic = FALSE; |
0e1862bb | 1853 | if (h && ((bfd_link_pic (info) |
a7519a3c RH |
1854 | && (!info->symbolic |
1855 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1856 | || !h->root.def_regular | |
1857 | || h->root.root.type == bfd_link_hash_defweak)) | |
07d6d2b8 | 1858 | maybe_dynamic = TRUE; |
252b5132 | 1859 | |
a7519a3c RH |
1860 | need = 0; |
1861 | gotent_flags = 0; | |
1862 | r_type = ELF64_R_TYPE (rel->r_info); | |
1863 | addend = rel->r_addend; | |
9e756d64 | 1864 | |
9e756d64 RH |
1865 | switch (r_type) |
1866 | { | |
1867 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1868 | need = NEED_GOT | NEED_GOT_ENTRY; |
1869 | ||
1870 | /* Remember how this literal is used from its LITUSEs. | |
1871 | This will be important when it comes to decide if we can | |
1872 | create a .plt entry for a function symbol. */ | |
1873 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1874 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1875 | gotent_flags |= 1 << rel->r_addend; |
1876 | --rel; | |
1877 | ||
1878 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1879 | if (gotent_flags == 0) | |
1880 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1881 | break; | |
1882 | ||
1883 | case R_ALPHA_GPDISP: | |
1884 | case R_ALPHA_GPREL16: | |
1885 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1886 | case R_ALPHA_GPRELHIGH: |
1887 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1888 | case R_ALPHA_BRSGP: |
1889 | need = NEED_GOT; | |
1890 | break; | |
1891 | ||
1892 | case R_ALPHA_REFLONG: | |
1893 | case R_ALPHA_REFQUAD: | |
0e1862bb | 1894 | if (bfd_link_pic (info) || maybe_dynamic) |
a7519a3c | 1895 | need = NEED_DYNREL; |
cc03ec80 RH |
1896 | break; |
1897 | ||
9e756d64 | 1898 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1899 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d TS |
1900 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
1901 | r_symndx = STN_UNDEF; | |
a7519a3c RH |
1902 | h = 0; |
1903 | maybe_dynamic = FALSE; | |
1904 | /* FALLTHRU */ | |
1905 | ||
1906 | case R_ALPHA_TLSGD: | |
1907 | case R_ALPHA_GOTDTPREL: | |
1908 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1909 | break; |
cc03ec80 | 1910 | |
a7519a3c RH |
1911 | case R_ALPHA_GOTTPREL: |
1912 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1913 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
0e1862bb | 1914 | if (bfd_link_pic (info)) |
a7519a3c RH |
1915 | info->flags |= DF_STATIC_TLS; |
1916 | break; | |
1917 | ||
1918 | case R_ALPHA_TPREL64: | |
3cbc1e5e | 1919 | if (bfd_link_dll (info)) |
e366eeae RH |
1920 | { |
1921 | info->flags |= DF_STATIC_TLS; | |
1922 | need = NEED_DYNREL; | |
1923 | } | |
1924 | else if (maybe_dynamic) | |
a7519a3c | 1925 | need = NEED_DYNREL; |
a7519a3c | 1926 | break; |
252b5132 RH |
1927 | } |
1928 | ||
a7519a3c | 1929 | if (need & NEED_GOT) |
252b5132 | 1930 | { |
85d162e6 | 1931 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
6cdc0ccc | 1932 | { |
a7519a3c RH |
1933 | if (!elf64_alpha_create_got_section (abfd, info)) |
1934 | return FALSE; | |
c328dc3f | 1935 | } |
252b5132 | 1936 | } |
252b5132 | 1937 | |
a7519a3c RH |
1938 | if (need & NEED_GOT_ENTRY) |
1939 | { | |
1940 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1941 | |
a7519a3c RH |
1942 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1943 | if (!gotent) | |
1944 | return FALSE; | |
4a67a098 | 1945 | |
a7519a3c | 1946 | if (gotent_flags) |
cc03ec80 | 1947 | { |
a7519a3c RH |
1948 | gotent->flags |= gotent_flags; |
1949 | if (h) | |
1950 | { | |
1951 | gotent_flags |= h->flags; | |
1952 | h->flags = gotent_flags; | |
4a67a098 | 1953 | |
a7519a3c | 1954 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1955 | /* ??? It appears that we won't make it into |
1956 | adjust_dynamic_symbol for symbols that remain | |
1957 | totally undefined. Copying this check here means | |
1958 | we can create a plt entry for them too. */ | |
1959 | h->root.needs_plt | |
1960 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1961 | } | |
a7519a3c | 1962 | } |
252b5132 RH |
1963 | } |
1964 | ||
a7519a3c | 1965 | if (need & NEED_DYNREL) |
9e756d64 | 1966 | { |
a7519a3c RH |
1967 | /* We need to create the section here now whether we eventually |
1968 | use it or not so that it gets mapped to an output section by | |
83bac4b0 | 1969 | the linker. If not used, we'll kill it in size_dynamic_sections. */ |
a7519a3c | 1970 | if (sreloc == NULL) |
9e756d64 | 1971 | { |
83bac4b0 NC |
1972 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1973 | (sec, dynobj, 3, abfd, /*rela?*/ TRUE); | |
1974 | ||
a7519a3c | 1975 | if (sreloc == NULL) |
83bac4b0 | 1976 | return FALSE; |
9e756d64 | 1977 | } |
252b5132 | 1978 | |
a7519a3c RH |
1979 | if (h) |
1980 | { | |
1981 | /* Since we havn't seen all of the input symbols yet, we | |
1982 | don't know whether we'll actually need a dynamic relocation | |
1983 | entry for this reloc. So make a record of it. Once we | |
1984 | find out if this thing needs dynamic relocation we'll | |
1985 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1986 | |
a7519a3c | 1987 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1988 | |
a7519a3c RH |
1989 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1990 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1991 | break; | |
252b5132 | 1992 | |
a7519a3c RH |
1993 | if (!rent) |
1994 | { | |
986f0783 | 1995 | size_t amt = sizeof (struct alpha_elf_reloc_entry); |
a7519a3c RH |
1996 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); |
1997 | if (!rent) | |
1998 | return FALSE; | |
252b5132 | 1999 | |
a7519a3c RH |
2000 | rent->srel = sreloc; |
2001 | rent->rtype = r_type; | |
2002 | rent->count = 1; | |
2003 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 2004 | |
a7519a3c RH |
2005 | rent->next = h->reloc_entries; |
2006 | h->reloc_entries = rent; | |
2007 | } | |
2008 | else | |
2009 | rent->count++; | |
2010 | } | |
0e1862bb | 2011 | else if (bfd_link_pic (info)) |
a7519a3c RH |
2012 | { |
2013 | /* If this is a shared library, and the section is to be | |
2014 | loaded into memory, we need a RELATIVE reloc. */ | |
2015 | sreloc->size += sizeof (Elf64_External_Rela); | |
2016 | if (sec->flags & SEC_READONLY) | |
2017 | info->flags |= DF_TEXTREL; | |
2018 | } | |
252b5132 RH |
2019 | } |
2020 | } | |
2021 | ||
b34976b6 | 2022 | return TRUE; |
252b5132 | 2023 | } |
252b5132 | 2024 | |
e117360e RH |
2025 | /* Return the section that should be marked against GC for a given |
2026 | relocation. */ | |
2027 | ||
2028 | static asection * | |
2029 | elf64_alpha_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
2030 | Elf_Internal_Rela *rel, | |
2031 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) | |
2032 | { | |
2033 | /* These relocations don't really reference a symbol. Instead we store | |
2034 | extra data in their addend slot. Ignore the symbol. */ | |
2035 | switch (ELF64_R_TYPE (rel->r_info)) | |
2036 | { | |
2037 | case R_ALPHA_LITUSE: | |
2038 | case R_ALPHA_GPDISP: | |
2039 | case R_ALPHA_HINT: | |
2040 | return NULL; | |
2041 | } | |
2042 | ||
2043 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
2044 | } | |
2045 | ||
a7519a3c RH |
2046 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2047 | regular object. The current definition is in some section of the | |
2048 | dynamic object, but we're not including those sections. We have to | |
2049 | change the definition to something the rest of the link can | |
2050 | understand. */ | |
252b5132 | 2051 | |
b34976b6 | 2052 | static bfd_boolean |
a7519a3c RH |
2053 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
2054 | struct elf_link_hash_entry *h) | |
252b5132 | 2055 | { |
a7519a3c RH |
2056 | bfd *dynobj; |
2057 | asection *s; | |
2058 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 2059 | |
a7519a3c RH |
2060 | dynobj = elf_hash_table(info)->dynobj; |
2061 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 2062 | |
a7519a3c | 2063 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2064 | about whether this symbol should get a .plt entry. Irritatingly, it |
2065 | is common for folk to leave undefined symbols in shared libraries, | |
2066 | and they still expect lazy binding; accept undefined symbols in lieu | |
2067 | of STT_FUNC. */ | |
2068 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2069 | { |
6ec7057a | 2070 | h->needs_plt = TRUE; |
252b5132 | 2071 | |
ce558b89 | 2072 | s = elf_hash_table(info)->splt; |
a7519a3c RH |
2073 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) |
2074 | return FALSE; | |
204692d7 | 2075 | |
6ec7057a RH |
2076 | /* We need one plt entry per got subsection. Delay allocation of |
2077 | the actual plt entries until size_plt_section, called from | |
2078 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2079 | |
a7519a3c RH |
2080 | return TRUE; |
2081 | } | |
2082 | else | |
6ec7057a | 2083 | h->needs_plt = FALSE; |
252b5132 | 2084 | |
a7519a3c RH |
2085 | /* If this is a weak symbol, and there is a real definition, the |
2086 | processor independent code will have arranged for us to see the | |
2087 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2088 | if (h->is_weakalias) |
252b5132 | 2089 | { |
60d67dc8 AM |
2090 | struct elf_link_hash_entry *def = weakdef (h); |
2091 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2092 | h->root.u.def.section = def->root.u.def.section; | |
2093 | h->root.u.def.value = def->root.u.def.value; | |
a7519a3c | 2094 | return TRUE; |
252b5132 | 2095 | } |
a7519a3c RH |
2096 | |
2097 | /* This is a reference to a symbol defined by a dynamic object which | |
2098 | is not a function. The Alpha, since it uses .got entries for all | |
2099 | symbols even in regular objects, does not need the hackery of a | |
2100 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2101 | |
b34976b6 | 2102 | return TRUE; |
252b5132 RH |
2103 | } |
2104 | ||
747ffa7b AM |
2105 | /* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */ |
2106 | ||
2107 | static void | |
2108 | elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
2109 | const Elf_Internal_Sym *isym, | |
2110 | bfd_boolean definition, | |
2111 | bfd_boolean dynamic) | |
2112 | { | |
2113 | if (!dynamic && definition) | |
2114 | h->other = ((h->other & ELF_ST_VISIBILITY (-1)) | |
2115 | | (isym->st_other & ~ELF_ST_VISIBILITY (-1))); | |
2116 | } | |
2117 | ||
a7519a3c RH |
2118 | /* Symbol versioning can create new symbols, and make our old symbols |
2119 | indirect to the new ones. Consolidate the got and reloc information | |
2120 | in these situations. */ | |
252b5132 | 2121 | |
48f4b4f5 RH |
2122 | static void |
2123 | elf64_alpha_copy_indirect_symbol (struct bfd_link_info *info, | |
2124 | struct elf_link_hash_entry *dir, | |
2125 | struct elf_link_hash_entry *ind) | |
252b5132 | 2126 | { |
48f4b4f5 RH |
2127 | struct alpha_elf_link_hash_entry *hi |
2128 | = (struct alpha_elf_link_hash_entry *) ind; | |
2129 | struct alpha_elf_link_hash_entry *hs | |
2130 | = (struct alpha_elf_link_hash_entry *) dir; | |
252b5132 | 2131 | |
48f4b4f5 RH |
2132 | /* Do the merging in the superclass. */ |
2133 | _bfd_elf_link_hash_copy_indirect(info, dir, ind); | |
252b5132 | 2134 | |
a7519a3c | 2135 | /* Merge the flags. Whee. */ |
a7519a3c RH |
2136 | hs->flags |= hi->flags; |
2137 | ||
48f4b4f5 RH |
2138 | /* ??? It's unclear to me what's really supposed to happen when |
2139 | "merging" defweak and defined symbols, given that we don't | |
2140 | actually throw away the defweak. This more-or-less copies | |
2141 | the logic related to got and plt entries in the superclass. */ | |
2142 | if (ind->root.type != bfd_link_hash_indirect) | |
2143 | return; | |
2144 | ||
a7519a3c RH |
2145 | /* Merge the .got entries. Cannibalize the old symbol's list in |
2146 | doing so, since we don't need it anymore. */ | |
2147 | ||
2148 | if (hs->got_entries == NULL) | |
2149 | hs->got_entries = hi->got_entries; | |
2150 | else | |
2151 | { | |
2152 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2153 | ||
2154 | gsh = hs->got_entries; | |
2155 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2156 | { |
a7519a3c RH |
2157 | gin = gi->next; |
2158 | for (gs = gsh; gs ; gs = gs->next) | |
2159 | if (gi->gotobj == gs->gotobj | |
2160 | && gi->reloc_type == gs->reloc_type | |
2161 | && gi->addend == gs->addend) | |
2162 | { | |
68994ca2 | 2163 | gs->use_count += gi->use_count; |
07d6d2b8 | 2164 | goto got_found; |
a7519a3c RH |
2165 | } |
2166 | gi->next = hs->got_entries; | |
2167 | hs->got_entries = gi; | |
2168 | got_found:; | |
252b5132 | 2169 | } |
a7519a3c RH |
2170 | } |
2171 | hi->got_entries = NULL; | |
252b5132 | 2172 | |
a7519a3c RH |
2173 | /* And similar for the reloc entries. */ |
2174 | ||
2175 | if (hs->reloc_entries == NULL) | |
2176 | hs->reloc_entries = hi->reloc_entries; | |
2177 | else | |
2178 | { | |
2179 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2180 | ||
2181 | rsh = hs->reloc_entries; | |
2182 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2183 | { | |
2184 | rin = ri->next; | |
2185 | for (rs = rsh; rs ; rs = rs->next) | |
2186 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2187 | { | |
2188 | rs->count += ri->count; | |
2189 | goto found_reloc; | |
2190 | } | |
2191 | ri->next = hs->reloc_entries; | |
2192 | hs->reloc_entries = ri; | |
2193 | found_reloc:; | |
2194 | } | |
252b5132 | 2195 | } |
a7519a3c | 2196 | hi->reloc_entries = NULL; |
252b5132 RH |
2197 | } |
2198 | ||
a7519a3c | 2199 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2200 | |
b34976b6 | 2201 | static bfd_boolean |
a7519a3c | 2202 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2203 | { |
a7519a3c RH |
2204 | int total = alpha_elf_tdata (a)->total_got_size; |
2205 | bfd *bsub; | |
252b5132 | 2206 | |
a7519a3c RH |
2207 | /* Trivial quick fallout test. */ |
2208 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2209 | return TRUE; | |
252b5132 | 2210 | |
a7519a3c RH |
2211 | /* By their nature, local .got entries cannot be merged. */ |
2212 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2213 | return FALSE; |
252b5132 | 2214 | |
a7519a3c RH |
2215 | /* Failing the common trivial comparison, we must effectively |
2216 | perform the merge. Not actually performing the merge means that | |
2217 | we don't have to store undo information in case we fail. */ | |
2218 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2219 | { | |
2220 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2221 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2222 | int i, n; | |
2223 | ||
2224 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2225 | for (i = 0; i < n; ++i) | |
2226 | { | |
2227 | struct alpha_elf_got_entry *ae, *be; | |
2228 | struct alpha_elf_link_hash_entry *h; | |
2229 | ||
2230 | h = hashes[i]; | |
2231 | while (h->root.root.type == bfd_link_hash_indirect | |
07d6d2b8 | 2232 | || h->root.root.type == bfd_link_hash_warning) |
a7519a3c RH |
2233 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
2234 | ||
2235 | for (be = h->got_entries; be ; be = be->next) | |
2236 | { | |
2237 | if (be->use_count == 0) | |
07d6d2b8 | 2238 | continue; |
a7519a3c | 2239 | if (be->gotobj != b) |
07d6d2b8 | 2240 | continue; |
a7519a3c RH |
2241 | |
2242 | for (ae = h->got_entries; ae ; ae = ae->next) | |
07d6d2b8 | 2243 | if (ae->gotobj == a |
a7519a3c RH |
2244 | && ae->reloc_type == be->reloc_type |
2245 | && ae->addend == be->addend) | |
2246 | goto global_found; | |
2247 | ||
2248 | total += alpha_got_entry_size (be->reloc_type); | |
2249 | if (total > MAX_GOT_SIZE) | |
07d6d2b8 | 2250 | return FALSE; |
a7519a3c RH |
2251 | global_found:; |
2252 | } | |
2253 | } | |
2254 | } | |
252b5132 | 2255 | |
b34976b6 | 2256 | return TRUE; |
252b5132 RH |
2257 | } |
2258 | ||
a7519a3c | 2259 | /* Actually merge two .got tables. */ |
252b5132 | 2260 | |
a7519a3c RH |
2261 | static void |
2262 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2263 | { |
a7519a3c RH |
2264 | int total = alpha_elf_tdata (a)->total_got_size; |
2265 | bfd *bsub; | |
252b5132 | 2266 | |
a7519a3c RH |
2267 | /* Remember local expansion. */ |
2268 | { | |
2269 | int e = alpha_elf_tdata (b)->local_got_size; | |
2270 | total += e; | |
2271 | alpha_elf_tdata (a)->local_got_size += e; | |
2272 | } | |
252b5132 | 2273 | |
a7519a3c RH |
2274 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2275 | { | |
2276 | struct alpha_elf_got_entry **local_got_entries; | |
2277 | struct alpha_elf_link_hash_entry **hashes; | |
2278 | Elf_Internal_Shdr *symtab_hdr; | |
2279 | int i, n; | |
252b5132 | 2280 | |
a7519a3c RH |
2281 | /* Let the local .got entries know they are part of a new subsegment. */ |
2282 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2283 | if (local_got_entries) | |
07d6d2b8 | 2284 | { |
a7519a3c RH |
2285 | n = elf_tdata (bsub)->symtab_hdr.sh_info; |
2286 | for (i = 0; i < n; ++i) | |
2287 | { | |
2288 | struct alpha_elf_got_entry *ent; | |
2289 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
07d6d2b8 | 2290 | ent->gotobj = a; |
a7519a3c | 2291 | } |
07d6d2b8 | 2292 | } |
252b5132 | 2293 | |
a7519a3c RH |
2294 | /* Merge the global .got entries. */ |
2295 | hashes = alpha_elf_sym_hashes (bsub); | |
2296 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2297 | |
a7519a3c RH |
2298 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2299 | for (i = 0; i < n; ++i) | |
07d6d2b8 | 2300 | { |
a7519a3c RH |
2301 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; |
2302 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2303 | |
a7519a3c RH |
2304 | h = hashes[i]; |
2305 | while (h->root.root.type == bfd_link_hash_indirect | |
07d6d2b8 | 2306 | || h->root.root.type == bfd_link_hash_warning) |
a7519a3c | 2307 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
252b5132 | 2308 | |
a7519a3c RH |
2309 | pbe = start = &h->got_entries; |
2310 | while ((be = *pbe) != NULL) | |
2311 | { | |
2312 | if (be->use_count == 0) | |
07d6d2b8 | 2313 | { |
a7519a3c RH |
2314 | *pbe = be->next; |
2315 | memset (be, 0xa5, sizeof (*be)); | |
2316 | goto kill; | |
07d6d2b8 | 2317 | } |
a7519a3c | 2318 | if (be->gotobj != b) |
07d6d2b8 | 2319 | goto next; |
a7519a3c RH |
2320 | |
2321 | for (ae = *start; ae ; ae = ae->next) | |
07d6d2b8 | 2322 | if (ae->gotobj == a |
a7519a3c RH |
2323 | && ae->reloc_type == be->reloc_type |
2324 | && ae->addend == be->addend) | |
2325 | { | |
2326 | ae->flags |= be->flags; | |
2327 | ae->use_count += be->use_count; | |
2328 | *pbe = be->next; | |
2329 | memset (be, 0xa5, sizeof (*be)); | |
2330 | goto kill; | |
2331 | } | |
2332 | be->gotobj = a; | |
2333 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2334 | |
a7519a3c RH |
2335 | next:; |
2336 | pbe = &be->next; | |
2337 | kill:; | |
2338 | } | |
07d6d2b8 | 2339 | } |
252b5132 | 2340 | |
a7519a3c RH |
2341 | alpha_elf_tdata (bsub)->gotobj = a; |
2342 | } | |
2343 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2344 | |
a7519a3c RH |
2345 | /* Merge the two in_got chains. */ |
2346 | { | |
2347 | bfd *next; | |
252b5132 | 2348 | |
a7519a3c RH |
2349 | bsub = a; |
2350 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2351 | bsub = next; | |
252b5132 | 2352 | |
a7519a3c RH |
2353 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2354 | } | |
252b5132 | 2355 | } |
a7519a3c RH |
2356 | |
2357 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2358 | |
b34976b6 | 2359 | static bfd_boolean |
a7519a3c | 2360 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2c3fc389 | 2361 | void * arg ATTRIBUTE_UNUSED) |
252b5132 | 2362 | { |
a7519a3c | 2363 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2364 | |
a7519a3c RH |
2365 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2366 | if (gotent->use_count > 0) | |
2367 | { | |
2368 | struct alpha_elf_obj_tdata *td; | |
2369 | bfd_size_type *plge; | |
252b5132 | 2370 | |
a7519a3c | 2371 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2372 | plge = &td->got->size; |
2373 | gotent->got_offset = *plge; | |
2374 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2375 | } | |
252b5132 | 2376 | |
6ec7057a | 2377 | return TRUE; |
a7519a3c | 2378 | } |
252b5132 | 2379 | |
a7519a3c RH |
2380 | static void |
2381 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2382 | { | |
4dfe6ac6 NC |
2383 | bfd *i, *got_list; |
2384 | struct alpha_elf_link_hash_table * htab; | |
2385 | ||
2386 | htab = alpha_elf_hash_table (info); | |
2387 | if (htab == NULL) | |
2388 | return; | |
2389 | got_list = htab->got_list; | |
252b5132 | 2390 | |
a7519a3c RH |
2391 | /* First, zero out the .got sizes, as we may be recalculating the |
2392 | .got after optimizing it. */ | |
2393 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2394 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2395 | |
a7519a3c | 2396 | /* Next, fill in the offsets for all the global entries. */ |
4dfe6ac6 | 2397 | alpha_elf_link_hash_traverse (htab, |
a7519a3c RH |
2398 | elf64_alpha_calc_got_offsets_for_symbol, |
2399 | NULL); | |
252b5132 | 2400 | |
a7519a3c RH |
2401 | /* Finally, fill in the offsets for the local entries. */ |
2402 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2403 | { | |
2404 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2405 | bfd *j; | |
252b5132 | 2406 | |
a7519a3c RH |
2407 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2408 | { | |
2409 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2410 | int k, n; | |
252b5132 | 2411 | |
a7519a3c RH |
2412 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2413 | if (!local_got_entries) | |
2414 | continue; | |
252b5132 | 2415 | |
a7519a3c RH |
2416 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2417 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2418 | if (gotent->use_count > 0) | |
07d6d2b8 | 2419 | { |
a7519a3c RH |
2420 | gotent->got_offset = got_offset; |
2421 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
07d6d2b8 | 2422 | } |
a7519a3c | 2423 | } |
252b5132 | 2424 | |
a7519a3c RH |
2425 | alpha_elf_tdata(i)->got->size = got_offset; |
2426 | } | |
2427 | } | |
252b5132 | 2428 | |
a7519a3c | 2429 | /* Constructs the gots. */ |
252b5132 | 2430 | |
b34976b6 | 2431 | static bfd_boolean |
d1c109de | 2432 | elf64_alpha_size_got_sections (struct bfd_link_info *info, |
07d6d2b8 | 2433 | bfd_boolean may_merge) |
252b5132 | 2434 | { |
a7519a3c | 2435 | bfd *i, *got_list, *cur_got_obj = NULL; |
4dfe6ac6 | 2436 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2437 | |
4dfe6ac6 NC |
2438 | htab = alpha_elf_hash_table (info); |
2439 | if (htab == NULL) | |
2440 | return FALSE; | |
2441 | got_list = htab->got_list; | |
95404643 | 2442 | |
a7519a3c RH |
2443 | /* On the first time through, pretend we have an existing got list |
2444 | consisting of all of the input files. */ | |
2445 | if (got_list == NULL) | |
252b5132 | 2446 | { |
c72f2fb2 | 2447 | for (i = info->input_bfds; i ; i = i->link.next) |
252b5132 | 2448 | { |
0ffa91dd NC |
2449 | bfd *this_got; |
2450 | ||
2451 | if (! is_alpha_elf (i)) | |
2452 | continue; | |
2453 | ||
2454 | this_got = alpha_elf_tdata (i)->gotobj; | |
a7519a3c RH |
2455 | if (this_got == NULL) |
2456 | continue; | |
252b5132 | 2457 | |
a7519a3c RH |
2458 | /* We are assuming no merging has yet occurred. */ |
2459 | BFD_ASSERT (this_got == i); | |
252b5132 | 2460 | |
07d6d2b8 | 2461 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2462 | { |
a7519a3c | 2463 | /* Yikes! A single object file has too many entries. */ |
4eca0228 | 2464 | _bfd_error_handler |
695344c0 | 2465 | /* xgettext:c-format */ |
871b3ab2 | 2466 | (_("%pB: .got subsegment exceeds 64K (size %d)"), |
07d6d2b8 | 2467 | i, alpha_elf_tdata (this_got)->total_got_size); |
b34976b6 | 2468 | return FALSE; |
252b5132 | 2469 | } |
252b5132 | 2470 | |
a7519a3c RH |
2471 | if (got_list == NULL) |
2472 | got_list = this_got; | |
2473 | else | |
2474 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2475 | cur_got_obj = this_got; | |
252b5132 RH |
2476 | } |
2477 | ||
a7519a3c RH |
2478 | /* Strange degenerate case of no got references. */ |
2479 | if (got_list == NULL) | |
2480 | return TRUE; | |
2481 | ||
4dfe6ac6 | 2482 | htab->got_list = got_list; |
a7519a3c RH |
2483 | } |
2484 | ||
2485 | cur_got_obj = got_list; | |
0ffa91dd NC |
2486 | if (cur_got_obj == NULL) |
2487 | return FALSE; | |
2488 | ||
d1c109de | 2489 | if (may_merge) |
a7519a3c | 2490 | { |
d1c109de RH |
2491 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; |
2492 | while (i != NULL) | |
252b5132 | 2493 | { |
d1c109de RH |
2494 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) |
2495 | { | |
2496 | elf64_alpha_merge_gots (cur_got_obj, i); | |
252b5132 | 2497 | |
d1c109de RH |
2498 | alpha_elf_tdata(i)->got->size = 0; |
2499 | i = alpha_elf_tdata(i)->got_link_next; | |
2500 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | cur_got_obj = i; | |
2505 | i = alpha_elf_tdata(i)->got_link_next; | |
2506 | } | |
a7519a3c | 2507 | } |
252b5132 RH |
2508 | } |
2509 | ||
a7519a3c RH |
2510 | /* Once the gots have been merged, fill in the got offsets for |
2511 | everything therein. */ | |
4a828aab | 2512 | elf64_alpha_calc_got_offsets (info); |
252b5132 | 2513 | |
a7519a3c | 2514 | return TRUE; |
252b5132 | 2515 | } |
252b5132 | 2516 | |
b34976b6 | 2517 | static bfd_boolean |
2c3fc389 NC |
2518 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, |
2519 | void * data) | |
252b5132 | 2520 | { |
a7519a3c RH |
2521 | asection *splt = (asection *) data; |
2522 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2523 | bfd_boolean saw_one = FALSE; |
252b5132 | 2524 | |
a7519a3c RH |
2525 | /* If we didn't need an entry before, we still don't. */ |
2526 | if (!h->root.needs_plt) | |
2527 | return TRUE; | |
e92d460e | 2528 | |
6ec7057a | 2529 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2530 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2531 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2532 | && gotent->use_count > 0) | |
6ec7057a RH |
2533 | { |
2534 | if (splt->size == 0) | |
2535 | splt->size = PLT_HEADER_SIZE; | |
2536 | gotent->plt_offset = splt->size; | |
2537 | splt->size += PLT_ENTRY_SIZE; | |
2538 | saw_one = TRUE; | |
2539 | } | |
a7519a3c | 2540 | |
6ec7057a RH |
2541 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2542 | if (!saw_one) | |
2543 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2544 | |
2545 | return TRUE; | |
2546 | } | |
2547 | ||
4a828aab RH |
2548 | /* Called from relax_section to rebuild the PLT in light of potential changes |
2549 | in the function's status. */ | |
a7519a3c | 2550 | |
4a828aab | 2551 | static void |
a7519a3c RH |
2552 | elf64_alpha_size_plt_section (struct bfd_link_info *info) |
2553 | { | |
6ec7057a | 2554 | asection *splt, *spltrel, *sgotplt; |
a7519a3c | 2555 | unsigned long entries; |
4dfe6ac6 NC |
2556 | struct alpha_elf_link_hash_table * htab; |
2557 | ||
2558 | htab = alpha_elf_hash_table (info); | |
2559 | if (htab == NULL) | |
2560 | return; | |
a7519a3c | 2561 | |
ce558b89 | 2562 | splt = elf_hash_table(info)->splt; |
a7519a3c | 2563 | if (splt == NULL) |
4a828aab | 2564 | return; |
252b5132 | 2565 | |
a7519a3c | 2566 | splt->size = 0; |
252b5132 | 2567 | |
4dfe6ac6 | 2568 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2569 | elf64_alpha_size_plt_section_1, splt); |
e92d460e | 2570 | |
a7519a3c | 2571 | /* Every plt entry requires a JMP_SLOT relocation. */ |
ce558b89 | 2572 | spltrel = elf_hash_table(info)->srelplt; |
4a828aab | 2573 | entries = 0; |
a7519a3c | 2574 | if (splt->size) |
6ec7057a RH |
2575 | { |
2576 | if (elf64_alpha_use_secureplt) | |
2577 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2578 | else | |
2579 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2580 | } | |
a7519a3c | 2581 | spltrel->size = entries * sizeof (Elf64_External_Rela); |
e92d460e | 2582 | |
6ec7057a RH |
2583 | /* When using the secureplt, we need two words somewhere in the data |
2584 | segment for the dynamic linker to tell us where to go. This is the | |
2585 | entire contents of the .got.plt section. */ | |
2586 | if (elf64_alpha_use_secureplt) | |
2587 | { | |
ce558b89 | 2588 | sgotplt = elf_hash_table(info)->sgotplt; |
6ec7057a RH |
2589 | sgotplt->size = entries ? 16 : 0; |
2590 | } | |
a7519a3c | 2591 | } |
e92d460e | 2592 | |
a7519a3c RH |
2593 | static bfd_boolean |
2594 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2595 | struct bfd_link_info *info) | |
2596 | { | |
2597 | bfd *i; | |
4dfe6ac6 | 2598 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2599 | |
0e1862bb | 2600 | if (bfd_link_relocatable (info)) |
a7519a3c | 2601 | return TRUE; |
252b5132 | 2602 | |
4dfe6ac6 NC |
2603 | htab = alpha_elf_hash_table (info); |
2604 | if (htab == NULL) | |
2605 | return FALSE; | |
2606 | ||
d1c109de | 2607 | if (!elf64_alpha_size_got_sections (info, TRUE)) |
a7519a3c | 2608 | return FALSE; |
252b5132 | 2609 | |
a7519a3c | 2610 | /* Allocate space for all of the .got subsections. */ |
4dfe6ac6 | 2611 | i = htab->got_list; |
a7519a3c | 2612 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) |
252b5132 | 2613 | { |
a7519a3c RH |
2614 | asection *s = alpha_elf_tdata(i)->got; |
2615 | if (s->size > 0) | |
2616 | { | |
2617 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2618 | if (s->contents == NULL) | |
2619 | return FALSE; | |
2620 | } | |
252b5132 RH |
2621 | } |
2622 | ||
b34976b6 | 2623 | return TRUE; |
252b5132 | 2624 | } |
3765b1be | 2625 | |
a7519a3c | 2626 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2627 | |
a7519a3c | 2628 | static int |
e366eeae | 2629 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared, int pie) |
a7519a3c RH |
2630 | { |
2631 | switch (r_type) | |
3765b1be | 2632 | { |
a7519a3c RH |
2633 | /* May appear in GOT entries. */ |
2634 | case R_ALPHA_TLSGD: | |
2635 | return (dynamic ? 2 : shared ? 1 : 0); | |
2636 | case R_ALPHA_TLSLDM: | |
2637 | return shared; | |
2638 | case R_ALPHA_LITERAL: | |
a7519a3c | 2639 | return dynamic || shared; |
e366eeae RH |
2640 | case R_ALPHA_GOTTPREL: |
2641 | return dynamic || (shared && !pie); | |
a7519a3c RH |
2642 | case R_ALPHA_GOTDTPREL: |
2643 | return dynamic; | |
3765b1be | 2644 | |
a7519a3c RH |
2645 | /* May appear in data sections. */ |
2646 | case R_ALPHA_REFLONG: | |
2647 | case R_ALPHA_REFQUAD: | |
a7519a3c | 2648 | return dynamic || shared; |
e366eeae RH |
2649 | case R_ALPHA_TPREL64: |
2650 | return dynamic || (shared && !pie); | |
3765b1be | 2651 | |
a7519a3c RH |
2652 | /* Everything else is illegal. We'll issue an error during |
2653 | relocate_section. */ | |
2654 | default: | |
2655 | return 0; | |
2656 | } | |
2657 | } | |
3765b1be | 2658 | |
a7519a3c | 2659 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2660 | |
a7519a3c RH |
2661 | static bfd_boolean |
2662 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2663 | struct bfd_link_info *info) | |
2664 | { | |
2665 | bfd_boolean dynamic; | |
2666 | struct alpha_elf_reloc_entry *relent; | |
2667 | unsigned long entries; | |
3765b1be | 2668 | |
a7519a3c RH |
2669 | /* If the symbol was defined as a common symbol in a regular object |
2670 | file, and there was no definition in any dynamic object, then the | |
2671 | linker will have allocated space for the symbol in a common | |
2672 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2673 | set. This is done for dynamic symbols in | |
2674 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2675 | symbols, somehow. */ | |
2676 | if (!h->root.def_regular | |
2677 | && h->root.ref_regular | |
2678 | && !h->root.def_dynamic | |
2679 | && (h->root.root.type == bfd_link_hash_defined | |
2680 | || h->root.root.type == bfd_link_hash_defweak) | |
2681 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2682 | h->root.def_regular = 1; | |
3765b1be | 2683 | |
a7519a3c RH |
2684 | /* If the symbol is dynamic, we'll need all the relocations in their |
2685 | natural form. If this is a shared object, and it has been forced | |
2686 | local, we'll need the same number of RELATIVE relocations. */ | |
2687 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2688 | |
a7519a3c RH |
2689 | /* If the symbol is a hidden undefined weak, then we never have any |
2690 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
0e1862bb | 2691 | based on bfd_link_pic (info). */ |
a7519a3c RH |
2692 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) |
2693 | return TRUE; | |
2694 | ||
2695 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2696 | { |
a7519a3c | 2697 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
3cbc1e5e AM |
2698 | bfd_link_pic (info), |
2699 | bfd_link_pie (info)); | |
a7519a3c RH |
2700 | if (entries) |
2701 | { | |
2702 | relent->srel->size += | |
2703 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2704 | if (relent->reltext) | |
2705 | info->flags |= DT_TEXTREL; | |
2706 | } | |
2707 | } | |
3765b1be | 2708 | |
a7519a3c RH |
2709 | return TRUE; |
2710 | } | |
3765b1be | 2711 | |
a7519a3c RH |
2712 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2713 | global symbols. */ | |
3765b1be | 2714 | |
a7519a3c RH |
2715 | static bfd_boolean |
2716 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2717 | struct bfd_link_info *info) | |
2718 | { | |
2719 | bfd_boolean dynamic; | |
2720 | struct alpha_elf_got_entry *gotent; | |
2721 | unsigned long entries; | |
3765b1be | 2722 | |
6ec7057a RH |
2723 | /* If we're using a plt for this symbol, then all of its relocations |
2724 | for its got entries go into .rela.plt. */ | |
2725 | if (h->root.needs_plt) | |
2726 | return TRUE; | |
2727 | ||
a7519a3c RH |
2728 | /* If the symbol is dynamic, we'll need all the relocations in their |
2729 | natural form. If this is a shared object, and it has been forced | |
2730 | local, we'll need the same number of RELATIVE relocations. */ | |
2731 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2732 | ||
2733 | /* If the symbol is a hidden undefined weak, then we never have any | |
2734 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
0e1862bb | 2735 | based on bfd_link_pic (info). */ |
a7519a3c RH |
2736 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) |
2737 | return TRUE; | |
2738 | ||
2739 | entries = 0; | |
2740 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2741 | if (gotent->use_count > 0) | |
e366eeae | 2742 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, dynamic, |
0e1862bb L |
2743 | bfd_link_pic (info), |
2744 | bfd_link_pie (info)); | |
a7519a3c | 2745 | |
a7519a3c RH |
2746 | if (entries > 0) |
2747 | { | |
ce558b89 | 2748 | asection *srel = elf_hash_table(info)->srelgot; |
a7519a3c RH |
2749 | BFD_ASSERT (srel != NULL); |
2750 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2751 | } |
3765b1be | 2752 | |
a7519a3c | 2753 | return TRUE; |
3765b1be RH |
2754 | } |
2755 | ||
a7519a3c | 2756 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2757 | |
4a828aab | 2758 | static void |
a7519a3c | 2759 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2760 | { |
a7519a3c | 2761 | unsigned long entries; |
ce558b89 | 2762 | bfd *i; |
a7519a3c | 2763 | asection *srel; |
4dfe6ac6 NC |
2764 | struct alpha_elf_link_hash_table * htab; |
2765 | ||
2766 | htab = alpha_elf_hash_table (info); | |
2767 | if (htab == NULL) | |
2768 | return; | |
252b5132 | 2769 | |
a7519a3c RH |
2770 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2771 | require attention for the main application as well. */ | |
252b5132 | 2772 | |
a7519a3c | 2773 | entries = 0; |
4dfe6ac6 | 2774 | for (i = htab->got_list; |
a7519a3c RH |
2775 | i ; i = alpha_elf_tdata(i)->got_link_next) |
2776 | { | |
2777 | bfd *j; | |
3241278a | 2778 | |
a7519a3c RH |
2779 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2780 | { | |
2781 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2782 | int k, n; | |
252b5132 | 2783 | |
a7519a3c RH |
2784 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2785 | if (!local_got_entries) | |
2786 | continue; | |
252b5132 | 2787 | |
a7519a3c RH |
2788 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2789 | for (gotent = local_got_entries[k]; | |
2790 | gotent ; gotent = gotent->next) | |
2791 | if (gotent->use_count > 0) | |
2792 | entries += (alpha_dynamic_entries_for_reloc | |
0e1862bb L |
2793 | (gotent->reloc_type, 0, bfd_link_pic (info), |
2794 | bfd_link_pie (info))); | |
a7519a3c RH |
2795 | } |
2796 | } | |
3765b1be | 2797 | |
ce558b89 | 2798 | srel = elf_hash_table(info)->srelgot; |
a7519a3c RH |
2799 | if (!srel) |
2800 | { | |
2801 | BFD_ASSERT (entries == 0); | |
4a828aab | 2802 | return; |
a7519a3c RH |
2803 | } |
2804 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2805 | |
a7519a3c | 2806 | /* Now do the non-local symbols. */ |
4dfe6ac6 | 2807 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2808 | elf64_alpha_size_rela_got_1, info); |
a7519a3c | 2809 | } |
252b5132 | 2810 | |
a7519a3c | 2811 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2812 | |
a7519a3c RH |
2813 | static bfd_boolean |
2814 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2815 | struct bfd_link_info *info) | |
2816 | { | |
2817 | bfd *dynobj; | |
2818 | asection *s; | |
24f1a751 | 2819 | bfd_boolean relplt, relocs; |
4dfe6ac6 NC |
2820 | struct alpha_elf_link_hash_table * htab; |
2821 | ||
2822 | htab = alpha_elf_hash_table (info); | |
2823 | if (htab == NULL) | |
2824 | return FALSE; | |
3765b1be | 2825 | |
a7519a3c RH |
2826 | dynobj = elf_hash_table(info)->dynobj; |
2827 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2828 | |
a7519a3c RH |
2829 | if (elf_hash_table (info)->dynamic_sections_created) |
2830 | { | |
2831 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 2832 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 2833 | { |
3d4d4302 | 2834 | s = bfd_get_linker_section (dynobj, ".interp"); |
a7519a3c RH |
2835 | BFD_ASSERT (s != NULL); |
2836 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2837 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2838 | } | |
3765b1be | 2839 | |
a7519a3c RH |
2840 | /* Now that we've seen all of the input files, we can decide which |
2841 | symbols need dynamic relocation entries and which don't. We've | |
2842 | collected information in check_relocs that we can now apply to | |
2843 | size the dynamic relocation sections. */ | |
4dfe6ac6 | 2844 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2845 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 2846 | |
a7519a3c | 2847 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2848 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2849 | } |
2850 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2851 | |
a7519a3c RH |
2852 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2853 | determined the sizes of the various dynamic sections. Allocate | |
2854 | memory for them. */ | |
2855 | relplt = FALSE; | |
24f1a751 | 2856 | relocs = FALSE; |
a7519a3c RH |
2857 | for (s = dynobj->sections; s != NULL; s = s->next) |
2858 | { | |
2859 | const char *name; | |
3765b1be | 2860 | |
a7519a3c RH |
2861 | if (!(s->flags & SEC_LINKER_CREATED)) |
2862 | continue; | |
cc03ec80 | 2863 | |
a7519a3c RH |
2864 | /* It's OK to base decisions on the section name, because none |
2865 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 2866 | name = bfd_section_name (s); |
3765b1be | 2867 | |
0112cd26 | 2868 | if (CONST_STRNEQ (name, ".rela")) |
3765b1be | 2869 | { |
c456f082 | 2870 | if (s->size != 0) |
a7519a3c | 2871 | { |
c456f082 | 2872 | if (strcmp (name, ".rela.plt") == 0) |
a7519a3c | 2873 | relplt = TRUE; |
24f1a751 AM |
2874 | else |
2875 | relocs = TRUE; | |
252b5132 | 2876 | |
a7519a3c RH |
2877 | /* We use the reloc_count field as a counter if we need |
2878 | to copy relocs into the output file. */ | |
2879 | s->reloc_count = 0; | |
252b5132 | 2880 | } |
3765b1be | 2881 | } |
0112cd26 | 2882 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 AM |
2883 | && strcmp (name, ".plt") != 0 |
2884 | && strcmp (name, ".dynbss") != 0) | |
3765b1be | 2885 | { |
a7519a3c RH |
2886 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2887 | continue; | |
2888 | } | |
252b5132 | 2889 | |
c456f082 AM |
2890 | if (s->size == 0) |
2891 | { | |
2892 | /* If we don't need this section, strip it from the output file. | |
2893 | This is to handle .rela.bss and .rela.plt. We must create it | |
2894 | in create_dynamic_sections, because it must be created before | |
2895 | the linker maps input sections to output sections. The | |
2896 | linker does that before adjust_dynamic_symbol is called, and | |
2897 | it is that function which decides whether anything needs to | |
2898 | go into these sections. */ | |
6452a567 RH |
2899 | if (!CONST_STRNEQ (name, ".got")) |
2900 | s->flags |= SEC_EXCLUDE; | |
c456f082 AM |
2901 | } |
2902 | else if ((s->flags & SEC_HAS_CONTENTS) != 0) | |
a7519a3c RH |
2903 | { |
2904 | /* Allocate memory for the section contents. */ | |
2905 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
c456f082 | 2906 | if (s->contents == NULL) |
b34976b6 | 2907 | return FALSE; |
a7519a3c RH |
2908 | } |
2909 | } | |
3765b1be | 2910 | |
a7519a3c RH |
2911 | if (elf_hash_table (info)->dynamic_sections_created) |
2912 | { | |
2913 | /* Add some entries to the .dynamic section. We fill in the | |
2914 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2915 | must add the entries now so that we get the correct size for | |
2916 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2917 | dynamic linker and used by the debugger. */ | |
2918 | #define add_dynamic_entry(TAG, VAL) \ | |
2919 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2920 | |
0e1862bb | 2921 | if (bfd_link_executable (info)) |
a7519a3c RH |
2922 | { |
2923 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2924 | return FALSE; | |
3765b1be RH |
2925 | } |
2926 | ||
a7519a3c | 2927 | if (relplt) |
3765b1be | 2928 | { |
a7519a3c RH |
2929 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2930 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2931 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2932 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2933 | return FALSE; | |
6ec7057a RH |
2934 | |
2935 | if (elf64_alpha_use_secureplt | |
2936 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2937 | return FALSE; | |
a7519a3c | 2938 | } |
252b5132 | 2939 | |
24f1a751 | 2940 | if (relocs) |
a7519a3c | 2941 | { |
24f1a751 AM |
2942 | if (!add_dynamic_entry (DT_RELA, 0) |
2943 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2944 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
a7519a3c | 2945 | return FALSE; |
24f1a751 AM |
2946 | |
2947 | if (info->flags & DF_TEXTREL) | |
2948 | { | |
2949 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2950 | return FALSE; | |
2951 | } | |
252b5132 RH |
2952 | } |
2953 | } | |
a7519a3c | 2954 | #undef add_dynamic_entry |
252b5132 | 2955 | |
b34976b6 | 2956 | return TRUE; |
252b5132 | 2957 | } |
a7519a3c RH |
2958 | \f |
2959 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2960 | |
a7519a3c RH |
2961 | Currently I'm only handling what I can do with existing compiler |
2962 | and assembler support, which means no instructions are removed, | |
2963 | though some may be nopped. At this time GCC does not emit enough | |
2964 | information to do all of the relaxing that is possible. It will | |
2965 | take some not small amount of work for that to happen. | |
252b5132 | 2966 | |
a7519a3c RH |
2967 | There are a couple of interesting papers that I once read on this |
2968 | subject, that I cannot find references to at the moment, that | |
2969 | related to Alpha in particular. They are by David Wall, then of | |
2970 | DEC WRL. */ | |
252b5132 | 2971 | |
a7519a3c RH |
2972 | struct alpha_relax_info |
2973 | { | |
2974 | bfd *abfd; | |
2975 | asection *sec; | |
2976 | bfd_byte *contents; | |
2977 | Elf_Internal_Shdr *symtab_hdr; | |
2978 | Elf_Internal_Rela *relocs, *relend; | |
2979 | struct bfd_link_info *link_info; | |
2980 | bfd_vma gp; | |
2981 | bfd *gotobj; | |
2982 | asection *tsec; | |
2983 | struct alpha_elf_link_hash_entry *h; | |
2984 | struct alpha_elf_got_entry **first_gotent; | |
2985 | struct alpha_elf_got_entry *gotent; | |
2986 | bfd_boolean changed_contents; | |
2987 | bfd_boolean changed_relocs; | |
2988 | unsigned char other; | |
2989 | }; | |
252b5132 | 2990 | |
a7519a3c RH |
2991 | static Elf_Internal_Rela * |
2992 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2993 | Elf_Internal_Rela *relend, | |
2994 | bfd_vma offset, int type) | |
2995 | { | |
2996 | while (rel < relend) | |
252b5132 | 2997 | { |
a7519a3c RH |
2998 | if (rel->r_offset == offset |
2999 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
3000 | return rel; | |
3001 | ++rel; | |
3002 | } | |
3003 | return NULL; | |
3004 | } | |
252b5132 | 3005 | |
a7519a3c RH |
3006 | static bfd_boolean |
3007 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
3008 | Elf_Internal_Rela *irel, unsigned long r_type) | |
3009 | { | |
3010 | unsigned int insn; | |
3011 | bfd_signed_vma disp; | |
252b5132 | 3012 | |
a7519a3c RH |
3013 | /* Get the instruction. */ |
3014 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 3015 | |
a7519a3c RH |
3016 | if (insn >> 26 != OP_LDQ) |
3017 | { | |
3018 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
4eca0228 | 3019 | _bfd_error_handler |
695344c0 | 3020 | /* xgettext:c-format */ |
2dcf00ce AM |
3021 | (_("%pB: %pA+%#" PRIx64 ": warning: " |
3022 | "%s relocation against unexpected insn"), | |
3023 | info->abfd, info->sec, (uint64_t) irel->r_offset, howto->name); | |
a7519a3c RH |
3024 | return TRUE; |
3025 | } | |
252b5132 | 3026 | |
a7519a3c RH |
3027 | /* Can't relax dynamic symbols. */ |
3028 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3029 | return TRUE; | |
252b5132 | 3030 | |
a7519a3c | 3031 | /* Can't use local-exec relocations in shared libraries. */ |
e366eeae | 3032 | if (r_type == R_ALPHA_GOTTPREL |
3cbc1e5e | 3033 | && bfd_link_dll (info->link_info)) |
a7519a3c | 3034 | return TRUE; |
252b5132 | 3035 | |
a7519a3c RH |
3036 | if (r_type == R_ALPHA_LITERAL) |
3037 | { | |
3038 | /* Look for nice constant addresses. This includes the not-uncommon | |
3039 | special case of 0 for undefweak symbols. */ | |
3040 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
0e1862bb | 3041 | || (!bfd_link_pic (info->link_info) |
a7519a3c RH |
3042 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) |
3043 | { | |
3044 | disp = 0; | |
3045 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
3046 | insn |= (symval & 0xffff); | |
3047 | r_type = R_ALPHA_NONE; | |
3048 | } | |
3049 | else | |
3050 | { | |
d1c109de RH |
3051 | /* We may only create GPREL relocs during the second pass. */ |
3052 | if (info->link_info->relax_pass == 0) | |
3053 | return TRUE; | |
3054 | ||
a7519a3c RH |
3055 | disp = symval - info->gp; |
3056 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
3057 | r_type = R_ALPHA_GPREL16; | |
3058 | } | |
252b5132 RH |
3059 | } |
3060 | else | |
252b5132 | 3061 | { |
a7519a3c | 3062 | bfd_vma dtp_base, tp_base; |
252b5132 | 3063 | |
a7519a3c RH |
3064 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3065 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
3066 | tp_base = alpha_get_tprel_base (info->link_info); | |
3067 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 3068 | |
a7519a3c | 3069 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 3070 | |
a7519a3c RH |
3071 | switch (r_type) |
3072 | { | |
3073 | case R_ALPHA_GOTDTPREL: | |
3074 | r_type = R_ALPHA_DTPREL16; | |
3075 | break; | |
3076 | case R_ALPHA_GOTTPREL: | |
3077 | r_type = R_ALPHA_TPREL16; | |
3078 | break; | |
3079 | default: | |
3080 | BFD_ASSERT (0); | |
3081 | return FALSE; | |
3082 | } | |
3083 | } | |
252b5132 | 3084 | |
a7519a3c | 3085 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3086 | return TRUE; |
252b5132 | 3087 | |
a7519a3c RH |
3088 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3089 | info->changed_contents = TRUE; | |
252b5132 | 3090 | |
a7519a3c RH |
3091 | /* Reduce the use count on this got entry by one, possibly |
3092 | eliminating it. */ | |
3093 | if (--info->gotent->use_count == 0) | |
252b5132 | 3094 | { |
a7519a3c RH |
3095 | int sz = alpha_got_entry_size (r_type); |
3096 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3097 | if (!info->h) | |
3098 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3099 | } |
252b5132 | 3100 | |
a7519a3c RH |
3101 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3102 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3103 | info->changed_relocs = TRUE; | |
3104 | ||
3105 | /* ??? Search forward through this basic block looking for insns | |
3106 | that use the target register. Stop after an insn modifying the | |
3107 | register is seen, or after a branch or call. | |
252b5132 | 3108 | |
a7519a3c RH |
3109 | Any such memory load insn may be substituted by a load directly |
3110 | off the GP. This allows the memory load insn to be issued before | |
3111 | the calculated GP register would otherwise be ready. | |
252b5132 | 3112 | |
a7519a3c RH |
3113 | Any such jsr insn can be replaced by a bsr if it is in range. |
3114 | ||
3115 | This would mean that we'd have to _add_ relocations, the pain of | |
3116 | which gives one pause. */ | |
252b5132 | 3117 | |
b34976b6 | 3118 | return TRUE; |
252b5132 RH |
3119 | } |
3120 | ||
a7519a3c RH |
3121 | static bfd_vma |
3122 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3123 | { |
a7519a3c RH |
3124 | /* If the function has the same gp, and we can identify that the |
3125 | function does not use its function pointer, we can eliminate the | |
3126 | address load. */ | |
252b5132 | 3127 | |
a7519a3c RH |
3128 | /* If the symbol is marked NOPV, we are being told the function never |
3129 | needs its procedure value. */ | |
3130 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3131 | return symval; | |
252b5132 | 3132 | |
a7519a3c RH |
3133 | /* If the symbol is marked STD_GP, we are being told the function does |
3134 | a normal ldgp in the first two words. */ | |
3135 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3136 | ; | |
252b5132 | 3137 | |
a7519a3c RH |
3138 | /* Otherwise, we may be able to identify a GP load in the first two |
3139 | words, which we can then skip. */ | |
3140 | else | |
252b5132 | 3141 | { |
a7519a3c RH |
3142 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3143 | bfd_vma ofs; | |
252b5132 | 3144 | |
a7519a3c RH |
3145 | /* Load the relocations from the section that the target symbol is in. */ |
3146 | if (info->sec == info->tsec) | |
252b5132 | 3147 | { |
a7519a3c RH |
3148 | tsec_relocs = info->relocs; |
3149 | tsec_relend = info->relend; | |
3150 | tsec_free = NULL; | |
3151 | } | |
3152 | else | |
3153 | { | |
3154 | tsec_relocs = (_bfd_elf_link_read_relocs | |
07d6d2b8 | 3155 | (info->abfd, info->tsec, NULL, |
a7519a3c RH |
3156 | (Elf_Internal_Rela *) NULL, |
3157 | info->link_info->keep_memory)); | |
3158 | if (tsec_relocs == NULL) | |
3159 | return 0; | |
3160 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
ae4fda66 JC |
3161 | tsec_free = (elf_section_data (info->tsec)->relocs == tsec_relocs |
3162 | ? NULL | |
3163 | : tsec_relocs); | |
a7519a3c | 3164 | } |
252b5132 | 3165 | |
a7519a3c RH |
3166 | /* Recover the symbol's offset within the section. */ |
3167 | ofs = (symval - info->tsec->output_section->vma | |
3168 | - info->tsec->output_offset); | |
252b5132 | 3169 | |
a7519a3c RH |
3170 | /* Look for a GPDISP reloc. */ |
3171 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3172 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3173 | |
a7519a3c RH |
3174 | if (!gpdisp || gpdisp->r_addend != 4) |
3175 | { | |
3176 | if (tsec_free) | |
3177 | free (tsec_free); | |
3178 | return 0; | |
252b5132 | 3179 | } |
a7519a3c | 3180 | if (tsec_free) |
07d6d2b8 | 3181 | free (tsec_free); |
252b5132 RH |
3182 | } |
3183 | ||
a7519a3c RH |
3184 | /* We've now determined that we can skip an initial gp load. Verify |
3185 | that the call and the target use the same gp. */ | |
f13a99db | 3186 | if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec |
a7519a3c RH |
3187 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) |
3188 | return 0; | |
252b5132 | 3189 | |
a7519a3c RH |
3190 | return symval + 8; |
3191 | } | |
252b5132 | 3192 | |
a7519a3c RH |
3193 | static bfd_boolean |
3194 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3195 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3196 | { |
d1c109de RH |
3197 | Elf_Internal_Rela *urel, *erel, *irelend = info->relend; |
3198 | int flags; | |
a7519a3c RH |
3199 | bfd_signed_vma disp; |
3200 | bfd_boolean fits16; | |
3201 | bfd_boolean fits32; | |
3202 | bfd_boolean lit_reused = FALSE; | |
3203 | bfd_boolean all_optimized = TRUE; | |
d1c109de RH |
3204 | bfd_boolean changed_contents; |
3205 | bfd_boolean changed_relocs; | |
3206 | bfd_byte *contents = info->contents; | |
3207 | bfd *abfd = info->abfd; | |
3208 | bfd_vma sec_output_vma; | |
a7519a3c | 3209 | unsigned int lit_insn; |
d1c109de | 3210 | int relax_pass; |
252b5132 | 3211 | |
d1c109de | 3212 | lit_insn = bfd_get_32 (abfd, contents + irel->r_offset); |
a7519a3c RH |
3213 | if (lit_insn >> 26 != OP_LDQ) |
3214 | { | |
4eca0228 | 3215 | _bfd_error_handler |
695344c0 | 3216 | /* xgettext:c-format */ |
2dcf00ce | 3217 | (_("%pB: %pA+%#" PRIx64 ": warning: " |
38f14ab8 AM |
3218 | "%s relocation against unexpected insn"), |
3219 | abfd, info->sec, (uint64_t) irel->r_offset, "LITERAL"); | |
a7519a3c RH |
3220 | return TRUE; |
3221 | } | |
252b5132 | 3222 | |
a7519a3c RH |
3223 | /* Can't relax dynamic symbols. */ |
3224 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3225 | return TRUE; | |
3226 | ||
d1c109de RH |
3227 | changed_contents = info->changed_contents; |
3228 | changed_relocs = info->changed_relocs; | |
3229 | sec_output_vma = info->sec->output_section->vma + info->sec->output_offset; | |
3230 | relax_pass = info->link_info->relax_pass; | |
3231 | ||
a7519a3c | 3232 | /* Summarize how this particular LITERAL is used. */ |
d1c109de | 3233 | for (erel = irel+1, flags = 0; erel < irelend; ++erel) |
252b5132 | 3234 | { |
d1c109de | 3235 | if (ELF64_R_TYPE (erel->r_info) != R_ALPHA_LITUSE) |
a7519a3c | 3236 | break; |
d1c109de RH |
3237 | if (erel->r_addend <= 6) |
3238 | flags |= 1 << erel->r_addend; | |
a7519a3c | 3239 | } |
252b5132 | 3240 | |
a7519a3c RH |
3241 | /* A little preparation for the loop... */ |
3242 | disp = symval - info->gp; | |
252b5132 | 3243 | |
d1c109de | 3244 | for (urel = irel+1; urel < erel; ++urel) |
a7519a3c | 3245 | { |
d1c109de | 3246 | bfd_vma urel_r_offset = urel->r_offset; |
a7519a3c RH |
3247 | unsigned int insn; |
3248 | int insn_disp; | |
3249 | bfd_signed_vma xdisp; | |
d1c109de | 3250 | Elf_Internal_Rela nrel; |
252b5132 | 3251 | |
d1c109de | 3252 | insn = bfd_get_32 (abfd, contents + urel_r_offset); |
252b5132 | 3253 | |
a7519a3c RH |
3254 | switch (urel->r_addend) |
3255 | { | |
3256 | case LITUSE_ALPHA_ADDR: | |
3257 | default: | |
3258 | /* This type is really just a placeholder to note that all | |
3259 | uses cannot be optimized, but to still allow some. */ | |
3260 | all_optimized = FALSE; | |
3261 | break; | |
252b5132 | 3262 | |
a7519a3c | 3263 | case LITUSE_ALPHA_BASE: |
d1c109de RH |
3264 | /* We may only create GPREL relocs during the second pass. */ |
3265 | if (relax_pass == 0) | |
3266 | { | |
3267 | all_optimized = FALSE; | |
3268 | break; | |
3269 | } | |
3270 | ||
a7519a3c | 3271 | /* We can always optimize 16-bit displacements. */ |
252b5132 | 3272 | |
a7519a3c RH |
3273 | /* Extract the displacement from the instruction, sign-extending |
3274 | it if necessary, then test whether it is within 16 or 32 bits | |
3275 | displacement from GP. */ | |
3276 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3277 | ||
3278 | xdisp = disp + insn_disp; | |
3279 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3280 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3281 | && xdisp < 0x7fff8000); | |
3282 | ||
3283 | if (fits16) | |
3284 | { | |
3285 | /* Take the op code and dest from this insn, take the base | |
3286 | register from the literal insn. Leave the offset alone. */ | |
3287 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
d1c109de RH |
3288 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3289 | changed_contents = TRUE; | |
3290 | ||
3291 | nrel = *urel; | |
3292 | nrel.r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3293 | R_ALPHA_GPREL16); | |
3294 | nrel.r_addend = irel->r_addend; | |
3295 | ||
3296 | /* As we adjust, move the reloc to the end so that we don't | |
07d6d2b8 | 3297 | break the LITERAL+LITUSE chain. */ |
d1c109de | 3298 | if (urel < --erel) |
07d6d2b8 | 3299 | *urel-- = *erel; |
d1c109de RH |
3300 | *erel = nrel; |
3301 | changed_relocs = TRUE; | |
252b5132 | 3302 | } |
252b5132 | 3303 | |
a7519a3c RH |
3304 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3305 | else if (fits32 && !(flags & ~6)) | |
3306 | { | |
3307 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3308 | |
a7519a3c RH |
3309 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3310 | R_ALPHA_GPRELHIGH); | |
3311 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
d1c109de | 3312 | bfd_put_32 (abfd, (bfd_vma) lit_insn, contents + irel->r_offset); |
a7519a3c | 3313 | lit_reused = TRUE; |
d1c109de | 3314 | changed_contents = TRUE; |
252b5132 | 3315 | |
07d6d2b8 AM |
3316 | /* Since all relocs must be optimized, don't bother swapping |
3317 | this relocation to the end. */ | |
a7519a3c RH |
3318 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3319 | R_ALPHA_GPRELLOW); | |
3320 | urel->r_addend = irel->r_addend; | |
d1c109de | 3321 | changed_relocs = TRUE; |
a7519a3c RH |
3322 | } |
3323 | else | |
3324 | all_optimized = FALSE; | |
3325 | break; | |
252b5132 | 3326 | |
a7519a3c RH |
3327 | case LITUSE_ALPHA_BYTOFF: |
3328 | /* We can always optimize byte instructions. */ | |
252b5132 | 3329 | |
a7519a3c RH |
3330 | /* FIXME: sanity check the insn for byte op. Check that the |
3331 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3332 | |
a7519a3c RH |
3333 | insn &= ~ (unsigned) 0x001ff000; |
3334 | insn |= ((symval & 7) << 13) | 0x1000; | |
d1c109de RH |
3335 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3336 | changed_contents = TRUE; | |
3337 | ||
3338 | nrel = *urel; | |
3339 | nrel.r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3340 | nrel.r_addend = 0; | |
3341 | ||
3342 | /* As we adjust, move the reloc to the end so that we don't | |
3343 | break the LITERAL+LITUSE chain. */ | |
3344 | if (urel < --erel) | |
3345 | *urel-- = *erel; | |
3346 | *erel = nrel; | |
3347 | changed_relocs = TRUE; | |
a7519a3c | 3348 | break; |
252b5132 | 3349 | |
a7519a3c RH |
3350 | case LITUSE_ALPHA_JSR: |
3351 | case LITUSE_ALPHA_TLSGD: | |
3352 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3353 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3354 | { |
a7519a3c RH |
3355 | bfd_vma optdest, org; |
3356 | bfd_signed_vma odisp; | |
252b5132 | 3357 | |
a7519a3c RH |
3358 | /* For undefined weak symbols, we're mostly interested in getting |
3359 | rid of the got entry whenever possible, so optimize this to a | |
3360 | use of the zero register. */ | |
3361 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3362 | { | |
3363 | insn |= 31 << 16; | |
d1c109de | 3364 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
252b5132 | 3365 | |
d1c109de | 3366 | changed_contents = TRUE; |
a7519a3c RH |
3367 | break; |
3368 | } | |
252b5132 | 3369 | |
a7519a3c RH |
3370 | /* If not zero, place to jump without needing pv. */ |
3371 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
d1c109de | 3372 | org = sec_output_vma + urel_r_offset + 4; |
a7519a3c | 3373 | odisp = (optdest ? optdest : symval) - org; |
252b5132 | 3374 | |
a7519a3c RH |
3375 | if (odisp >= -0x400000 && odisp < 0x400000) |
3376 | { | |
3377 | Elf_Internal_Rela *xrel; | |
252b5132 | 3378 | |
a7519a3c RH |
3379 | /* Preserve branch prediction call stack when possible. */ |
3380 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3381 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3382 | else | |
3383 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
d1c109de RH |
3384 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3385 | changed_contents = TRUE; | |
252b5132 | 3386 | |
d1c109de RH |
3387 | nrel = *urel; |
3388 | nrel.r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3389 | R_ALPHA_BRADDR); | |
3390 | nrel.r_addend = irel->r_addend; | |
252b5132 | 3391 | |
a7519a3c | 3392 | if (optdest) |
d1c109de | 3393 | nrel.r_addend += optdest - symval; |
a7519a3c RH |
3394 | else |
3395 | all_optimized = FALSE; | |
252b5132 | 3396 | |
a7519a3c RH |
3397 | /* Kill any HINT reloc that might exist for this insn. */ |
3398 | xrel = (elf64_alpha_find_reloc_at_ofs | |
d1c109de | 3399 | (info->relocs, info->relend, urel_r_offset, |
a7519a3c RH |
3400 | R_ALPHA_HINT)); |
3401 | if (xrel) | |
3402 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3403 | |
d1c109de RH |
3404 | /* As we adjust, move the reloc to the end so that we don't |
3405 | break the LITERAL+LITUSE chain. */ | |
3406 | if (urel < --erel) | |
3407 | *urel-- = *erel; | |
3408 | *erel = nrel; | |
3409 | ||
a7519a3c RH |
3410 | info->changed_relocs = TRUE; |
3411 | } | |
3412 | else | |
3413 | all_optimized = FALSE; | |
252b5132 | 3414 | |
a7519a3c RH |
3415 | /* Even if the target is not in range for a direct branch, |
3416 | if we share a GP, we can eliminate the gp reload. */ | |
3417 | if (optdest) | |
3418 | { | |
3419 | Elf_Internal_Rela *gpdisp | |
3420 | = (elf64_alpha_find_reloc_at_ofs | |
d1c109de | 3421 | (info->relocs, irelend, urel_r_offset + 4, |
a7519a3c RH |
3422 | R_ALPHA_GPDISP)); |
3423 | if (gpdisp) | |
3424 | { | |
d1c109de | 3425 | bfd_byte *p_ldah = contents + gpdisp->r_offset; |
a7519a3c | 3426 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; |
d1c109de RH |
3427 | unsigned int ldah = bfd_get_32 (abfd, p_ldah); |
3428 | unsigned int lda = bfd_get_32 (abfd, p_lda); | |
252b5132 | 3429 | |
a7519a3c RH |
3430 | /* Verify that the instruction is "ldah $29,0($26)". |
3431 | Consider a function that ends in a noreturn call, | |
3432 | and that the next function begins with an ldgp, | |
3433 | and that by accident there is no padding between. | |
3434 | In that case the insn would use $27 as the base. */ | |
3435 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3436 | { | |
d1c109de RH |
3437 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, p_ldah); |
3438 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3439 | |
a7519a3c | 3440 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
d1c109de RH |
3441 | changed_contents = TRUE; |
3442 | changed_relocs = TRUE; | |
a7519a3c RH |
3443 | } |
3444 | } | |
3445 | } | |
3446 | } | |
3447 | break; | |
252b5132 | 3448 | } |
252b5132 RH |
3449 | } |
3450 | ||
d1c109de RH |
3451 | /* If we reused the literal instruction, we must have optimized all. */ |
3452 | BFD_ASSERT(!lit_reused || all_optimized); | |
3453 | ||
a7519a3c RH |
3454 | /* If all cases were optimized, we can reduce the use count on this |
3455 | got entry by one, possibly eliminating it. */ | |
3456 | if (all_optimized) | |
252b5132 | 3457 | { |
a7519a3c | 3458 | if (--info->gotent->use_count == 0) |
252b5132 | 3459 | { |
a7519a3c RH |
3460 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3461 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3462 | if (!info->h) | |
3463 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3464 | } |
a7519a3c RH |
3465 | |
3466 | /* If the literal instruction is no longer needed (it may have been | |
3467 | reused. We can eliminate it. */ | |
3468 | /* ??? For now, I don't want to deal with compacting the section, | |
3469 | so just nop it out. */ | |
3470 | if (!lit_reused) | |
252b5132 | 3471 | { |
a7519a3c | 3472 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
d1c109de | 3473 | changed_relocs = TRUE; |
252b5132 | 3474 | |
d1c109de RH |
3475 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, contents + irel->r_offset); |
3476 | changed_contents = TRUE; | |
a7519a3c | 3477 | } |
a7519a3c | 3478 | } |
d1c109de RH |
3479 | |
3480 | info->changed_contents = changed_contents; | |
3481 | info->changed_relocs = changed_relocs; | |
3482 | ||
3483 | if (all_optimized || relax_pass == 0) | |
3484 | return TRUE; | |
3485 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3486 | } |
3487 | ||
b34976b6 | 3488 | static bfd_boolean |
a7519a3c RH |
3489 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3490 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3491 | { |
a7519a3c | 3492 | bfd_byte *pos[5]; |
891caa9b | 3493 | unsigned int insn, tlsgd_reg; |
a7519a3c | 3494 | Elf_Internal_Rela *gpdisp, *hint; |
891caa9b | 3495 | bfd_boolean dynamic, use_gottprel; |
a7519a3c | 3496 | unsigned long new_symndx; |
f44f99a5 | 3497 | |
a7519a3c | 3498 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3499 | |
a7519a3c RH |
3500 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3501 | to use dynamic model for it. */ | |
3502 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3503 | ; | |
f44f99a5 | 3504 | |
a7519a3c RH |
3505 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3506 | then we might as well relax to IE. */ | |
0e1862bb | 3507 | else if (bfd_link_pic (info->link_info) && !dynamic |
a7519a3c RH |
3508 | && (info->link_info->flags & DF_STATIC_TLS)) |
3509 | ; | |
f44f99a5 | 3510 | |
a7519a3c | 3511 | /* Otherwise we must be building an executable to do anything. */ |
0e1862bb | 3512 | else if (bfd_link_pic (info->link_info)) |
a7519a3c | 3513 | return TRUE; |
f44f99a5 | 3514 | |
a7519a3c RH |
3515 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3516 | the matching LITUSE_TLS relocations. */ | |
3517 | if (irel + 2 >= info->relend) | |
3518 | return TRUE; | |
3519 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3520 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3521 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3522 | return TRUE; | |
f44f99a5 | 3523 | |
a7519a3c RH |
3524 | /* There must be a GPDISP relocation positioned immediately after the |
3525 | LITUSE relocation. */ | |
3526 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3527 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3528 | if (!gpdisp) | |
b34976b6 | 3529 | return TRUE; |
f44f99a5 | 3530 | |
a7519a3c RH |
3531 | pos[0] = info->contents + irel[0].r_offset; |
3532 | pos[1] = info->contents + irel[1].r_offset; | |
3533 | pos[2] = info->contents + irel[2].r_offset; | |
3534 | pos[3] = info->contents + gpdisp->r_offset; | |
3535 | pos[4] = pos[3] + gpdisp->r_addend; | |
f44f99a5 | 3536 | |
7dbf3b76 RH |
3537 | /* Beware of the compiler hoisting part of the sequence out a loop |
3538 | and adjusting the destination register for the TLSGD insn. If this | |
3539 | happens, there will be a move into $16 before the JSR insn, so only | |
3540 | transformations of the first insn pair should use this register. */ | |
3541 | tlsgd_reg = bfd_get_32 (info->abfd, pos[0]); | |
3542 | tlsgd_reg = (tlsgd_reg >> 21) & 31; | |
3543 | ||
a7519a3c RH |
3544 | /* Generally, the positions are not allowed to be out of order, lest the |
3545 | modified insn sequence have different register lifetimes. We can make | |
3546 | an exception when pos 1 is adjacent to pos 0. */ | |
3547 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3548 | { |
a7519a3c RH |
3549 | bfd_byte *tmp = pos[0]; |
3550 | pos[0] = pos[1]; | |
3551 | pos[1] = tmp; | |
f44f99a5 | 3552 | } |
a7519a3c RH |
3553 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) |
3554 | return TRUE; | |
cc03ec80 | 3555 | |
a7519a3c RH |
3556 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3557 | smash the symndx when we adjust the relocations below. */ | |
3558 | { | |
3559 | struct alpha_elf_got_entry *lit_gotent; | |
3560 | struct alpha_elf_link_hash_entry *lit_h; | |
3561 | unsigned long indx; | |
f44f99a5 | 3562 | |
a7519a3c RH |
3563 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3564 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3565 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3566 | |
a7519a3c RH |
3567 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3568 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3569 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3570 | |
a7519a3c RH |
3571 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3572 | lit_gotent = lit_gotent->next) | |
3573 | if (lit_gotent->gotobj == info->gotobj | |
3574 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3575 | && lit_gotent->addend == irel[1].r_addend) | |
3576 | break; | |
3577 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3578 | |
a7519a3c RH |
3579 | if (--lit_gotent->use_count == 0) |
3580 | { | |
3581 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3582 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3583 | } | |
3584 | } | |
252b5132 | 3585 | |
a7519a3c | 3586 | /* Change |
252b5132 | 3587 | |
a7519a3c RH |
3588 | lda $16,x($gp) !tlsgd!1 |
3589 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3590 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3591 | ldah $29,0($26) !gpdisp!2 | |
3592 | lda $29,0($29) !gpdisp!2 | |
3593 | to | |
3594 | ldq $16,x($gp) !gottprel | |
3595 | unop | |
3596 | call_pal rduniq | |
3597 | addq $16,$0,$0 | |
3598 | unop | |
3599 | or the first pair to | |
3600 | lda $16,x($gp) !tprel | |
3601 | unop | |
3602 | or | |
3603 | ldah $16,x($gp) !tprelhi | |
3604 | lda $16,x($16) !tprello | |
3605 | ||
3606 | as appropriate. */ | |
3607 | ||
3608 | use_gottprel = FALSE; | |
cf35638d | 3609 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF; |
891caa9b | 3610 | |
9a757e4d RM |
3611 | /* Some compilers warn about a Boolean-looking expression being |
3612 | used in a switch. The explicit cast silences them. */ | |
0e1862bb | 3613 | switch ((int) (!dynamic && !bfd_link_pic (info->link_info))) |
252b5132 | 3614 | { |
a7519a3c RH |
3615 | case 1: |
3616 | { | |
3617 | bfd_vma tp_base; | |
3618 | bfd_signed_vma disp; | |
252b5132 | 3619 | |
a7519a3c RH |
3620 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3621 | tp_base = alpha_get_tprel_base (info->link_info); | |
3622 | disp = symval - tp_base; | |
252b5132 | 3623 | |
a7519a3c RH |
3624 | if (disp >= -0x8000 && disp < 0x8000) |
3625 | { | |
891caa9b | 3626 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c RH |
3627 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3628 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3629 | |
a7519a3c RH |
3630 | irel[0].r_offset = pos[0] - info->contents; |
3631 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3632 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3633 | break; | |
3634 | } | |
3635 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3636 | && disp < (bfd_signed_vma) 0x7fff8000 | |
891caa9b | 3637 | && pos[0] + 4 == pos[1]) |
a7519a3c | 3638 | { |
891caa9b | 3639 | insn = (OP_LDAH << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c | 3640 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
891caa9b | 3641 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (tlsgd_reg << 16); |
a7519a3c | 3642 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); |
3765b1be | 3643 | |
a7519a3c RH |
3644 | irel[0].r_offset = pos[0] - info->contents; |
3645 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3646 | irel[1].r_offset = pos[1] - info->contents; | |
3647 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3648 | break; | |
3649 | } | |
3650 | } | |
3651 | /* FALLTHRU */ | |
3765b1be | 3652 | |
3765b1be | 3653 | default: |
a7519a3c RH |
3654 | use_gottprel = TRUE; |
3655 | ||
891caa9b | 3656 | insn = (OP_LDQ << 26) | (tlsgd_reg << 21) | (29 << 16); |
a7519a3c RH |
3657 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3658 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3659 | ||
3660 | irel[0].r_offset = pos[0] - info->contents; | |
3661 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3662 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3663 | break; | |
3765b1be | 3664 | } |
3765b1be | 3665 | |
a7519a3c | 3666 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3667 | |
a7519a3c RH |
3668 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3669 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3670 | |
a7519a3c | 3671 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3672 | |
a7519a3c RH |
3673 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3674 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3675 | |
a7519a3c RH |
3676 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3677 | irel[2].r_offset, R_ALPHA_HINT); | |
3678 | if (hint) | |
3679 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3680 | |
a7519a3c RH |
3681 | info->changed_contents = TRUE; |
3682 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3683 | |
a7519a3c RH |
3684 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3685 | if (--info->gotent->use_count == 0) | |
3765b1be | 3686 | { |
a7519a3c RH |
3687 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3688 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3689 | if (!info->h) | |
3690 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3691 | } |
252b5132 | 3692 | |
a7519a3c RH |
3693 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3694 | count on that got entry. */ | |
3695 | if (use_gottprel) | |
f44f99a5 | 3696 | { |
a7519a3c | 3697 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3698 | |
a7519a3c RH |
3699 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3700 | tprel_gotent = tprel_gotent->next) | |
3701 | if (tprel_gotent->gotobj == info->gotobj | |
3702 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3703 | && tprel_gotent->addend == irel->r_addend) | |
3704 | break; | |
3705 | if (tprel_gotent) | |
3706 | tprel_gotent->use_count++; | |
3707 | else | |
f44f99a5 | 3708 | { |
a7519a3c RH |
3709 | if (info->gotent->use_count == 0) |
3710 | tprel_gotent = info->gotent; | |
3711 | else | |
3712 | { | |
3713 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3714 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3715 | if (!tprel_gotent) | |
3716 | return FALSE; | |
f44f99a5 | 3717 | |
a7519a3c RH |
3718 | tprel_gotent->next = *info->first_gotent; |
3719 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3720 | |
a7519a3c RH |
3721 | tprel_gotent->gotobj = info->gotobj; |
3722 | tprel_gotent->addend = irel->r_addend; | |
3723 | tprel_gotent->got_offset = -1; | |
3724 | tprel_gotent->reloc_done = 0; | |
3725 | tprel_gotent->reloc_xlated = 0; | |
3726 | } | |
f44f99a5 | 3727 | |
a7519a3c RH |
3728 | tprel_gotent->use_count = 1; |
3729 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3730 | } | |
f44f99a5 | 3731 | } |
f44f99a5 | 3732 | |
b34976b6 | 3733 | return TRUE; |
f44f99a5 RH |
3734 | } |
3735 | ||
b34976b6 | 3736 | static bfd_boolean |
a7519a3c RH |
3737 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3738 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3739 | { |
a7519a3c RH |
3740 | Elf_Internal_Shdr *symtab_hdr; |
3741 | Elf_Internal_Rela *internal_relocs; | |
3742 | Elf_Internal_Rela *irel, *irelend; | |
3743 | Elf_Internal_Sym *isymbuf = NULL; | |
3744 | struct alpha_elf_got_entry **local_got_entries; | |
3745 | struct alpha_relax_info info; | |
4dfe6ac6 | 3746 | struct alpha_elf_link_hash_table * htab; |
d1c109de | 3747 | int relax_pass; |
4dfe6ac6 NC |
3748 | |
3749 | htab = alpha_elf_hash_table (link_info); | |
3750 | if (htab == NULL) | |
3751 | return FALSE; | |
f44f99a5 | 3752 | |
4a828aab | 3753 | /* There's nothing to change, yet. */ |
a7519a3c | 3754 | *again = FALSE; |
f44f99a5 | 3755 | |
0e1862bb | 3756 | if (bfd_link_relocatable (link_info) |
a7519a3c RH |
3757 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) |
3758 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3759 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3760 | return TRUE; |
3761 | ||
0ffa91dd | 3762 | BFD_ASSERT (is_alpha_elf (abfd)); |
d1c109de | 3763 | relax_pass = link_info->relax_pass; |
0ffa91dd | 3764 | |
4a828aab | 3765 | /* Make sure our GOT and PLT tables are up-to-date. */ |
4dfe6ac6 | 3766 | if (htab->relax_trip != link_info->relax_trip) |
4a828aab | 3767 | { |
4dfe6ac6 | 3768 | htab->relax_trip = link_info->relax_trip; |
4a828aab | 3769 | |
d1c109de | 3770 | /* This should never fail after the initial round, since the only error |
07d6d2b8 | 3771 | is GOT overflow, and relaxation only shrinks the table. However, we |
d1c109de RH |
3772 | may only merge got sections during the first pass. If we merge |
3773 | sections after we've created GPREL relocs, the GP for the merged | |
3774 | section backs up which may put the relocs out of range. */ | |
3775 | if (!elf64_alpha_size_got_sections (link_info, relax_pass == 0)) | |
4a828aab RH |
3776 | abort (); |
3777 | if (elf_hash_table (link_info)->dynamic_sections_created) | |
3778 | { | |
3779 | elf64_alpha_size_plt_section (link_info); | |
3780 | elf64_alpha_size_rela_got_section (link_info); | |
3781 | } | |
3782 | } | |
3783 | ||
0ffa91dd | 3784 | symtab_hdr = &elf_symtab_hdr (abfd); |
a7519a3c | 3785 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
252b5132 | 3786 | |
a7519a3c RH |
3787 | /* Load the relocations for this section. */ |
3788 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 3789 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
a7519a3c RH |
3790 | link_info->keep_memory)); |
3791 | if (internal_relocs == NULL) | |
3792 | return FALSE; | |
252b5132 | 3793 | |
a7519a3c RH |
3794 | memset(&info, 0, sizeof (info)); |
3795 | info.abfd = abfd; | |
3796 | info.sec = sec; | |
3797 | info.link_info = link_info; | |
3798 | info.symtab_hdr = symtab_hdr; | |
3799 | info.relocs = internal_relocs; | |
3800 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3801 | ||
3802 | /* Find the GP for this object. Do not store the result back via | |
3803 | _bfd_set_gp_value, since this could change again before final. */ | |
3804 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3805 | if (info.gotobj) | |
3765b1be | 3806 | { |
a7519a3c RH |
3807 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3808 | info.gp = (sgot->output_section->vma | |
3809 | + sgot->output_offset | |
3810 | + 0x8000); | |
252b5132 RH |
3811 | } |
3812 | ||
a7519a3c RH |
3813 | /* Get the section contents. */ |
3814 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3815 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3816 | else | |
3817 | { | |
3818 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3819 | goto error_return; | |
3820 | } | |
252b5132 | 3821 | |
a7519a3c RH |
3822 | for (irel = internal_relocs; irel < irelend; irel++) |
3823 | { | |
3824 | bfd_vma symval; | |
3825 | struct alpha_elf_got_entry *gotent; | |
3826 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3827 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3828 | ||
3829 | /* Early exit for unhandled or unrelaxable relocations. */ | |
d1c109de | 3830 | if (r_type != R_ALPHA_LITERAL) |
07d6d2b8 AM |
3831 | { |
3832 | /* We complete everything except LITERAL in the first pass. */ | |
d1c109de RH |
3833 | if (relax_pass != 0) |
3834 | continue; | |
3835 | if (r_type == R_ALPHA_TLSLDM) | |
3836 | { | |
3837 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
07d6d2b8 | 3838 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
d1c109de RH |
3839 | r_symndx = STN_UNDEF; |
3840 | } | |
3841 | else if (r_type != R_ALPHA_GOTDTPREL | |
07d6d2b8 | 3842 | && r_type != R_ALPHA_GOTTPREL |
d1c109de RH |
3843 | && r_type != R_ALPHA_TLSGD) |
3844 | continue; | |
a7519a3c RH |
3845 | } |
3846 | ||
3847 | /* Get the value of the symbol referred to by the reloc. */ | |
3848 | if (r_symndx < symtab_hdr->sh_info) | |
3849 | { | |
3850 | /* A local symbol. */ | |
3851 | Elf_Internal_Sym *isym; | |
3852 | ||
3853 | /* Read this BFD's local symbols. */ | |
3854 | if (isymbuf == NULL) | |
3855 | { | |
3856 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3857 | if (isymbuf == NULL) | |
3858 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3859 | symtab_hdr->sh_info, 0, | |
3860 | NULL, NULL, NULL); | |
3861 | if (isymbuf == NULL) | |
3862 | goto error_return; | |
3863 | } | |
252b5132 | 3864 | |
a7519a3c | 3865 | isym = isymbuf + r_symndx; |
252b5132 | 3866 | |
a7519a3c RH |
3867 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3868 | means forcing the symbol value to the tp base. */ | |
3869 | if (r_type == R_ALPHA_TLSLDM) | |
3870 | { | |
3871 | info.tsec = bfd_abs_section_ptr; | |
3872 | symval = alpha_get_tprel_base (info.link_info); | |
3873 | } | |
3874 | else | |
3875 | { | |
3876 | symval = isym->st_value; | |
3877 | if (isym->st_shndx == SHN_UNDEF) | |
07d6d2b8 | 3878 | continue; |
a7519a3c | 3879 | else if (isym->st_shndx == SHN_ABS) |
07d6d2b8 | 3880 | info.tsec = bfd_abs_section_ptr; |
a7519a3c | 3881 | else if (isym->st_shndx == SHN_COMMON) |
07d6d2b8 | 3882 | info.tsec = bfd_com_section_ptr; |
a7519a3c | 3883 | else |
07d6d2b8 | 3884 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7519a3c | 3885 | } |
252b5132 | 3886 | |
a7519a3c RH |
3887 | info.h = NULL; |
3888 | info.other = isym->st_other; | |
3889 | if (local_got_entries) | |
3890 | info.first_gotent = &local_got_entries[r_symndx]; | |
3891 | else | |
3892 | { | |
3893 | info.first_gotent = &info.gotent; | |
3894 | info.gotent = NULL; | |
3895 | } | |
252b5132 | 3896 | } |
a7519a3c RH |
3897 | else |
3898 | { | |
3899 | unsigned long indx; | |
3900 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3901 | |
a7519a3c RH |
3902 | indx = r_symndx - symtab_hdr->sh_info; |
3903 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3904 | BFD_ASSERT (h != NULL); | |
252b5132 | 3905 | |
a7519a3c RH |
3906 | while (h->root.root.type == bfd_link_hash_indirect |
3907 | || h->root.root.type == bfd_link_hash_warning) | |
3908 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3909 | |
a7519a3c RH |
3910 | /* If the symbol is undefined, we can't do anything with it. */ |
3911 | if (h->root.root.type == bfd_link_hash_undefined) | |
3912 | continue; | |
252b5132 | 3913 | |
a7519a3c RH |
3914 | /* If the symbol isn't defined in the current module, |
3915 | again we can't do anything. */ | |
3916 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3917 | { | |
3918 | info.tsec = bfd_abs_section_ptr; | |
3919 | symval = 0; | |
3920 | } | |
3921 | else if (!h->root.def_regular) | |
3922 | { | |
3923 | /* Except for TLSGD relocs, which can sometimes be | |
3924 | relaxed to GOTTPREL relocs. */ | |
3925 | if (r_type != R_ALPHA_TLSGD) | |
3926 | continue; | |
3927 | info.tsec = bfd_abs_section_ptr; | |
3928 | symval = 0; | |
3929 | } | |
3930 | else | |
3931 | { | |
3932 | info.tsec = h->root.root.u.def.section; | |
3933 | symval = h->root.root.u.def.value; | |
3934 | } | |
252b5132 | 3935 | |
a7519a3c RH |
3936 | info.h = h; |
3937 | info.other = h->root.other; | |
3938 | info.first_gotent = &h->got_entries; | |
3939 | } | |
252b5132 | 3940 | |
a7519a3c RH |
3941 | /* Search for the got entry to be used by this relocation. */ |
3942 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3943 | if (gotent->gotobj == info.gotobj | |
3944 | && gotent->reloc_type == r_type | |
3945 | && gotent->addend == irel->r_addend) | |
3946 | break; | |
3947 | info.gotent = gotent; | |
252b5132 | 3948 | |
a7519a3c RH |
3949 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3950 | symval += irel->r_addend; | |
252b5132 | 3951 | |
a7519a3c | 3952 | switch (r_type) |
252b5132 | 3953 | { |
a7519a3c RH |
3954 | case R_ALPHA_LITERAL: |
3955 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3956 | |
a7519a3c RH |
3957 | /* If there exist LITUSE relocations immediately following, this |
3958 | opens up all sorts of interesting optimizations, because we | |
3959 | now know every location that this address load is used. */ | |
3960 | if (irel+1 < irelend | |
3961 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3962 | { |
a7519a3c RH |
3963 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3964 | goto error_return; | |
252b5132 | 3965 | } |
a7519a3c RH |
3966 | else |
3967 | { | |
3968 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3969 | goto error_return; | |
3970 | } | |
3971 | break; | |
252b5132 | 3972 | |
a7519a3c RH |
3973 | case R_ALPHA_GOTDTPREL: |
3974 | case R_ALPHA_GOTTPREL: | |
3975 | BFD_ASSERT(info.gotent != NULL); | |
3976 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3977 | goto error_return; | |
3978 | break; | |
3979 | ||
3980 | case R_ALPHA_TLSGD: | |
3981 | case R_ALPHA_TLSLDM: | |
3982 | BFD_ASSERT(info.gotent != NULL); | |
3983 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3984 | r_type == R_ALPHA_TLSGD)) | |
3985 | goto error_return; | |
3986 | break; | |
252b5132 RH |
3987 | } |
3988 | } | |
3989 | ||
a7519a3c RH |
3990 | if (isymbuf != NULL |
3991 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3992 | { | |
3993 | if (!link_info->keep_memory) | |
3994 | free (isymbuf); | |
3995 | else | |
252b5132 | 3996 | { |
a7519a3c RH |
3997 | /* Cache the symbols for elf_link_input_bfd. */ |
3998 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3999 | } |
a7519a3c | 4000 | } |
252b5132 | 4001 | |
a7519a3c RH |
4002 | if (info.contents != NULL |
4003 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
4004 | { | |
4005 | if (!info.changed_contents && !link_info->keep_memory) | |
4006 | free (info.contents); | |
4007 | else | |
252b5132 | 4008 | { |
a7519a3c RH |
4009 | /* Cache the section contents for elf_link_input_bfd. */ |
4010 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 4011 | } |
a7519a3c | 4012 | } |
252b5132 | 4013 | |
a7519a3c RH |
4014 | if (elf_section_data (sec)->relocs != internal_relocs) |
4015 | { | |
4016 | if (!info.changed_relocs) | |
4017 | free (internal_relocs); | |
4018 | else | |
4019 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4020 | } |
a7519a3c RH |
4021 | |
4022 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 4023 | |
b34976b6 | 4024 | return TRUE; |
252b5132 | 4025 | |
a7519a3c RH |
4026 | error_return: |
4027 | if (isymbuf != NULL | |
4028 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
4029 | free (isymbuf); | |
4030 | if (info.contents != NULL | |
4031 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
4032 | free (info.contents); | |
4033 | if (internal_relocs != NULL | |
4034 | && elf_section_data (sec)->relocs != internal_relocs) | |
4035 | free (internal_relocs); | |
4036 | return FALSE; | |
4037 | } | |
4038 | \f | |
1bbc9cec RH |
4039 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
4040 | into the next available slot in SREL. */ | |
4041 | ||
4042 | static void | |
a7519a3c RH |
4043 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
4044 | asection *sec, asection *srel, bfd_vma offset, | |
4045 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
4046 | { |
4047 | Elf_Internal_Rela outrel; | |
4048 | bfd_byte *loc; | |
4049 | ||
4050 | BFD_ASSERT (srel != NULL); | |
4051 | ||
4052 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
4053 | outrel.r_addend = addend; | |
4054 | ||
4055 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
4056 | if ((offset | 1) != (bfd_vma) -1) | |
4057 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
4058 | else | |
4059 | memset (&outrel, 0, sizeof (outrel)); | |
4060 | ||
4061 | loc = srel->contents; | |
4062 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
4063 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 4064 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
4065 | } |
4066 | ||
4a67a098 RH |
4067 | /* Relocate an Alpha ELF section for a relocatable link. |
4068 | ||
4069 | We don't have to change anything unless the reloc is against a section | |
4070 | symbol, in which case we have to adjust according to where the section | |
4071 | symbol winds up in the output section. */ | |
4072 | ||
b34976b6 | 4073 | static bfd_boolean |
a7519a3c RH |
4074 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
4075 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4076 | bfd *input_bfd, asection *input_section, | |
4077 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
4078 | Elf_Internal_Rela *relocs, | |
4079 | Elf_Internal_Sym *local_syms, | |
4080 | asection **local_sections) | |
4a67a098 RH |
4081 | { |
4082 | unsigned long symtab_hdr_sh_info; | |
4083 | Elf_Internal_Rela *rel; | |
4084 | Elf_Internal_Rela *relend; | |
ab96bf03 | 4085 | struct elf_link_hash_entry **sym_hashes; |
b34976b6 | 4086 | bfd_boolean ret_val = TRUE; |
4a67a098 | 4087 | |
0ffa91dd | 4088 | symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info; |
ab96bf03 | 4089 | sym_hashes = elf_sym_hashes (input_bfd); |
4a67a098 RH |
4090 | |
4091 | relend = relocs + input_section->reloc_count; | |
4092 | for (rel = relocs; rel < relend; rel++) | |
4093 | { | |
4094 | unsigned long r_symndx; | |
4095 | Elf_Internal_Sym *sym; | |
4096 | asection *sec; | |
4097 | unsigned long r_type; | |
4098 | ||
ab96bf03 | 4099 | r_type = ELF64_R_TYPE (rel->r_info); |
4a67a098 RH |
4100 | if (r_type >= R_ALPHA_max) |
4101 | { | |
4eca0228 | 4102 | _bfd_error_handler |
695344c0 | 4103 | /* xgettext:c-format */ |
0aa13fee | 4104 | (_("%pB: unsupported relocation type %#x"), |
d003868e | 4105 | input_bfd, (int) r_type); |
4a67a098 | 4106 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4107 | ret_val = FALSE; |
4a67a098 RH |
4108 | continue; |
4109 | } | |
4110 | ||
4a67a098 RH |
4111 | /* The symbol associated with GPDISP and LITUSE is |
4112 | immaterial. Only the addend is significant. */ | |
4113 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4114 | continue; | |
4115 | ||
ab96bf03 | 4116 | r_symndx = ELF64_R_SYM (rel->r_info); |
4a67a098 RH |
4117 | if (r_symndx < symtab_hdr_sh_info) |
4118 | { | |
4119 | sym = local_syms + r_symndx; | |
ab96bf03 | 4120 | sec = local_sections[r_symndx]; |
4a67a098 | 4121 | } |
ab96bf03 AM |
4122 | else |
4123 | { | |
4124 | struct elf_link_hash_entry *h; | |
4125 | ||
4126 | h = sym_hashes[r_symndx - symtab_hdr_sh_info]; | |
4127 | ||
4128 | while (h->root.type == bfd_link_hash_indirect | |
4129 | || h->root.type == bfd_link_hash_warning) | |
4130 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4131 | ||
4132 | if (h->root.type != bfd_link_hash_defined | |
4133 | && h->root.type != bfd_link_hash_defweak) | |
4134 | continue; | |
4135 | ||
4136 | sym = NULL; | |
4137 | sec = h->root.u.def.section; | |
4138 | } | |
4139 | ||
dbaa2011 | 4140 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 4141 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
4142 | rel, 1, relend, |
4143 | elf64_alpha_howto_table + r_type, 0, | |
e4067dbb | 4144 | contents); |
ab96bf03 AM |
4145 | |
4146 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4147 | rel->r_addend += sec->output_offset; | |
4a67a098 RH |
4148 | } |
4149 | ||
4150 | return ret_val; | |
4151 | } | |
4152 | ||
252b5132 RH |
4153 | /* Relocate an Alpha ELF section. */ |
4154 | ||
b34976b6 | 4155 | static bfd_boolean |
a7519a3c RH |
4156 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
4157 | bfd *input_bfd, asection *input_section, | |
4158 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
4159 | Elf_Internal_Sym *local_syms, | |
4160 | asection **local_sections) | |
252b5132 | 4161 | { |
4a67a098 | 4162 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4163 | Elf_Internal_Rela *rel; |
4164 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4165 | asection *sgot, *srel, *srelgot; |
4166 | bfd *dynobj, *gotobj; | |
4167 | bfd_vma gp, tp_base, dtp_base; | |
4168 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4169 | bfd_boolean ret_val; |
252b5132 | 4170 | |
0ffa91dd | 4171 | BFD_ASSERT (is_alpha_elf (input_bfd)); |
68ffbac6 | 4172 | |
4a67a098 | 4173 | /* Handle relocatable links with a smaller loop. */ |
0e1862bb | 4174 | if (bfd_link_relocatable (info)) |
4a67a098 RH |
4175 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4176 | input_section, contents, relocs, | |
4177 | local_syms, local_sections); | |
4178 | ||
4179 | /* This is a final link. */ | |
4180 | ||
b34976b6 | 4181 | ret_val = TRUE; |
252b5132 | 4182 | |
0ffa91dd | 4183 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
3765b1be | 4184 | |
4a67a098 | 4185 | dynobj = elf_hash_table (info)->dynobj; |
ce558b89 | 4186 | srelgot = elf_hash_table (info)->srelgot; |
4a67a098 | 4187 | |
3241278a RH |
4188 | if (input_section->flags & SEC_ALLOC) |
4189 | { | |
4190 | const char *section_name; | |
4191 | section_name = (bfd_elf_string_from_elf_section | |
4192 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
d4730f92 | 4193 | _bfd_elf_single_rel_hdr (input_section)->sh_name)); |
3241278a | 4194 | BFD_ASSERT(section_name != NULL); |
3d4d4302 | 4195 | srel = bfd_get_linker_section (dynobj, section_name); |
3241278a RH |
4196 | } |
4197 | else | |
4198 | srel = NULL; | |
3765b1be | 4199 | |
4a67a098 RH |
4200 | /* Find the gp value for this input bfd. */ |
4201 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4202 | if (gotobj) | |
4203 | { | |
4204 | sgot = alpha_elf_tdata (gotobj)->got; | |
4205 | gp = _bfd_get_gp_value (gotobj); | |
4206 | if (gp == 0) | |
252b5132 | 4207 | { |
4a67a098 RH |
4208 | gp = (sgot->output_section->vma |
4209 | + sgot->output_offset | |
4210 | + 0x8000); | |
4211 | _bfd_set_gp_value (gotobj, gp); | |
4212 | } | |
4213 | } | |
4214 | else | |
4215 | { | |
4216 | sgot = NULL; | |
4217 | gp = 0; | |
4218 | } | |
3765b1be | 4219 | |
4a67a098 RH |
4220 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4221 | ||
e1918d23 | 4222 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4223 | { |
e1918d23 AM |
4224 | dtp_base = alpha_get_dtprel_base (info); |
4225 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4226 | } |
4a67a098 RH |
4227 | else |
4228 | dtp_base = tp_base = 0; | |
252b5132 | 4229 | |
252b5132 | 4230 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4231 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4232 | { |
4a67a098 | 4233 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4234 | struct alpha_elf_got_entry *gotent; |
4235 | bfd_reloc_status_type r; | |
252b5132 RH |
4236 | reloc_howto_type *howto; |
4237 | unsigned long r_symndx; | |
4a67a098 RH |
4238 | Elf_Internal_Sym *sym = NULL; |
4239 | asection *sec = NULL; | |
3765b1be | 4240 | bfd_vma value; |
dc810e39 | 4241 | bfd_vma addend; |
b34976b6 | 4242 | bfd_boolean dynamic_symbol_p; |
1d5316ab | 4243 | bfd_boolean unresolved_reloc = FALSE; |
b34976b6 | 4244 | bfd_boolean undef_weak_ref = FALSE; |
3765b1be | 4245 | unsigned long r_type; |
252b5132 RH |
4246 | |
4247 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4248 | if (r_type >= R_ALPHA_max) |
252b5132 | 4249 | { |
4eca0228 | 4250 | _bfd_error_handler |
695344c0 | 4251 | /* xgettext:c-format */ |
0aa13fee | 4252 | (_("%pB: unsupported relocation type %#x"), |
d003868e | 4253 | input_bfd, (int) r_type); |
252b5132 | 4254 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4255 | ret_val = FALSE; |
3765b1be | 4256 | continue; |
252b5132 | 4257 | } |
252b5132 | 4258 | |
3765b1be | 4259 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4260 | r_symndx = ELF64_R_SYM(rel->r_info); |
4261 | ||
cc03ec80 | 4262 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d | 4263 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
cc03ec80 | 4264 | if (r_type == R_ALPHA_TLSLDM) |
cf35638d | 4265 | r_symndx = STN_UNDEF; |
cc03ec80 | 4266 | |
252b5132 RH |
4267 | if (r_symndx < symtab_hdr->sh_info) |
4268 | { | |
8517fae7 | 4269 | asection *msec; |
252b5132 RH |
4270 | sym = local_syms + r_symndx; |
4271 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4272 | msec = sec; |
4273 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4274 | |
cf35638d | 4275 | /* If this is a tp-relative relocation against sym STN_UNDEF (0), |
cc03ec80 | 4276 | this is hackery from relax_section. Force the value to |
f915360b | 4277 | be the tls module base. */ |
cf35638d | 4278 | if (r_symndx == STN_UNDEF |
cc03ec80 RH |
4279 | && (r_type == R_ALPHA_TLSLDM |
4280 | || r_type == R_ALPHA_GOTTPREL | |
4281 | || r_type == R_ALPHA_TPREL64 | |
4282 | || r_type == R_ALPHA_TPRELHI | |
4283 | || r_type == R_ALPHA_TPRELLO | |
4284 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4285 | value = dtp_base; |
cc03ec80 | 4286 | |
4a67a098 RH |
4287 | if (local_got_entries) |
4288 | gotent = local_got_entries[r_symndx]; | |
4289 | else | |
4290 | gotent = NULL; | |
3765b1be RH |
4291 | |
4292 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4293 | unless it has been done already. */ | |
4294 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4295 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
dbaa2011 | 4296 | && sec->sec_info_type == SEC_INFO_TYPE_MERGE |
048d873d RH |
4297 | && gotent |
4298 | && !gotent->reloc_xlated) | |
3765b1be RH |
4299 | { |
4300 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4301 | |
4302 | for (ent = gotent; ent; ent = ent->next) | |
4303 | { | |
4304 | ent->reloc_xlated = 1; | |
4305 | if (ent->use_count == 0) | |
4306 | continue; | |
4307 | msec = sec; | |
4308 | ent->addend = | |
4309 | _bfd_merged_section_offset (output_bfd, &msec, | |
4310 | elf_section_data (sec)-> | |
4311 | sec_info, | |
753731ee | 4312 | sym->st_value + ent->addend); |
3765b1be RH |
4313 | ent->addend -= sym->st_value; |
4314 | ent->addend += msec->output_section->vma | |
4315 | + msec->output_offset | |
4316 | - sec->output_section->vma | |
4317 | - sec->output_offset; | |
4318 | } | |
4319 | } | |
4320 | ||
b34976b6 | 4321 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4322 | } |
4323 | else | |
4324 | { | |
62d887d4 | 4325 | bfd_boolean warned, ignored; |
560e09e9 | 4326 | struct elf_link_hash_entry *hh; |
b2a8e766 AM |
4327 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4328 | ||
4329 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4330 | r_symndx, symtab_hdr, sym_hashes, | |
4331 | hh, sec, value, | |
62d887d4 | 4332 | unresolved_reloc, warned, ignored); |
560e09e9 NC |
4333 | |
4334 | if (warned) | |
4335 | continue; | |
252b5132 | 4336 | |
560e09e9 NC |
4337 | if (value == 0 |
4338 | && ! unresolved_reloc | |
4339 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4340 | undef_weak_ref = TRUE; |
3765b1be | 4341 | |
560e09e9 | 4342 | h = (struct alpha_elf_link_hash_entry *) hh; |
07d6d2b8 | 4343 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
3765b1be | 4344 | gotent = h->got_entries; |
252b5132 | 4345 | } |
3765b1be | 4346 | |
dbaa2011 | 4347 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 4348 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 4349 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 4350 | |
252b5132 | 4351 | addend = rel->r_addend; |
3765b1be RH |
4352 | value += addend; |
4353 | ||
4354 | /* Search for the proper got entry. */ | |
4355 | for (; gotent ; gotent = gotent->next) | |
4356 | if (gotent->gotobj == gotobj | |
4357 | && gotent->reloc_type == r_type | |
4358 | && gotent->addend == addend) | |
4359 | break; | |
252b5132 RH |
4360 | |
4361 | switch (r_type) | |
4362 | { | |
4363 | case R_ALPHA_GPDISP: | |
4364 | { | |
4365 | bfd_byte *p_ldah, *p_lda; | |
4366 | ||
4367 | BFD_ASSERT(gp != 0); | |
4368 | ||
3765b1be RH |
4369 | value = (input_section->output_section->vma |
4370 | + input_section->output_offset | |
4371 | + rel->r_offset); | |
252b5132 | 4372 | |
3765b1be | 4373 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4374 | p_lda = p_ldah + rel->r_addend; |
4375 | ||
3765b1be | 4376 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4377 | p_ldah, p_lda); |
4378 | } | |
4379 | break; | |
4380 | ||
252b5132 | 4381 | case R_ALPHA_LITERAL: |
3765b1be RH |
4382 | BFD_ASSERT(sgot != NULL); |
4383 | BFD_ASSERT(gp != 0); | |
4384 | BFD_ASSERT(gotent != NULL); | |
4385 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4386 | |
3765b1be RH |
4387 | if (!gotent->reloc_done) |
4388 | { | |
4389 | gotent->reloc_done = 1; | |
252b5132 | 4390 | |
3765b1be RH |
4391 | bfd_put_64 (output_bfd, value, |
4392 | sgot->contents + gotent->got_offset); | |
252b5132 | 4393 | |
3765b1be RH |
4394 | /* If the symbol has been forced local, output a |
4395 | RELATIVE reloc, otherwise it will be handled in | |
4396 | finish_dynamic_symbol. */ | |
0e1862bb L |
4397 | if (bfd_link_pic (info) |
4398 | && !dynamic_symbol_p | |
4399 | && !undef_weak_ref) | |
1bbc9cec RH |
4400 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4401 | gotent->got_offset, 0, | |
4402 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4403 | } |
252b5132 | 4404 | |
3765b1be RH |
4405 | value = (sgot->output_section->vma |
4406 | + sgot->output_offset | |
4407 | + gotent->got_offset); | |
4408 | value -= gp; | |
252b5132 RH |
4409 | goto default_reloc; |
4410 | ||
4411 | case R_ALPHA_GPREL32: | |
ec1659c8 | 4412 | case R_ALPHA_GPREL16: |
252b5132 | 4413 | case R_ALPHA_GPRELLOW: |
3765b1be | 4414 | if (dynamic_symbol_p) |
07d6d2b8 | 4415 | { |
4eca0228 | 4416 | _bfd_error_handler |
695344c0 | 4417 | /* xgettext:c-format */ |
871b3ab2 | 4418 | (_("%pB: gp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4419 | input_bfd, h->root.root.root.string); |
4420 | ret_val = FALSE; | |
4421 | } | |
252b5132 | 4422 | BFD_ASSERT(gp != 0); |
3765b1be | 4423 | value -= gp; |
252b5132 RH |
4424 | goto default_reloc; |
4425 | ||
4426 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4427 | if (dynamic_symbol_p) |
07d6d2b8 | 4428 | { |
4eca0228 | 4429 | _bfd_error_handler |
695344c0 | 4430 | /* xgettext:c-format */ |
871b3ab2 | 4431 | (_("%pB: gp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4432 | input_bfd, h->root.root.root.string); |
4433 | ret_val = FALSE; | |
4434 | } | |
252b5132 | 4435 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4436 | value -= gp; |
4437 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4438 | goto default_reloc; |
4439 | ||
252b5132 | 4440 | case R_ALPHA_HINT: |
f94952df RH |
4441 | /* A call to a dynamic symbol is definitely out of range of |
4442 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4443 | if (dynamic_symbol_p) |
f94952df RH |
4444 | { |
4445 | r = bfd_reloc_ok; | |
4446 | break; | |
4447 | } | |
3765b1be RH |
4448 | /* The regular PC-relative stuff measures from the start of |
4449 | the instruction rather than the end. */ | |
4450 | value -= 4; | |
4451 | goto default_reloc; | |
f94952df RH |
4452 | |
4453 | case R_ALPHA_BRADDR: | |
3765b1be | 4454 | if (dynamic_symbol_p) |
07d6d2b8 | 4455 | { |
4eca0228 | 4456 | _bfd_error_handler |
695344c0 | 4457 | /* xgettext:c-format */ |
871b3ab2 | 4458 | (_("%pB: pc-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4459 | input_bfd, h->root.root.root.string); |
4460 | ret_val = FALSE; | |
4461 | } | |
252b5132 RH |
4462 | /* The regular PC-relative stuff measures from the start of |
4463 | the instruction rather than the end. */ | |
3765b1be | 4464 | value -= 4; |
252b5132 RH |
4465 | goto default_reloc; |
4466 | ||
7793f4d0 RH |
4467 | case R_ALPHA_BRSGP: |
4468 | { | |
4469 | int other; | |
4470 | const char *name; | |
4471 | ||
4472 | /* The regular PC-relative stuff measures from the start of | |
4473 | the instruction rather than the end. */ | |
3765b1be | 4474 | value -= 4; |
7793f4d0 | 4475 | |
ccf00ab6 RH |
4476 | /* The source and destination gp must be the same. Note that |
4477 | the source will always have an assigned gp, since we forced | |
4478 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4479 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4480 | care not to crash if H is an undefined symbol. */ |
4481 | if (h != NULL && sec != NULL | |
4482 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4483 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4484 | { | |
4eca0228 | 4485 | _bfd_error_handler |
695344c0 | 4486 | /* xgettext:c-format */ |
871b3ab2 | 4487 | (_("%pB: change in gp: BRSGP %s"), |
d003868e | 4488 | input_bfd, h->root.root.root.string); |
b34976b6 | 4489 | ret_val = FALSE; |
7793f4d0 RH |
4490 | } |
4491 | ||
4492 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4493 | if (h != NULL) | |
4494 | other = h->root.other; | |
4495 | else | |
4496 | other = sym->st_other; | |
4497 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4498 | { | |
4499 | case STO_ALPHA_NOPV: | |
07d6d2b8 | 4500 | break; |
7793f4d0 | 4501 | case STO_ALPHA_STD_GPLOAD: |
64e04ecd | 4502 | value += 8; |
7793f4d0 RH |
4503 | break; |
4504 | default: | |
4505 | if (h != NULL) | |
4506 | name = h->root.root.root.string; | |
4507 | else | |
4508 | { | |
4509 | name = (bfd_elf_string_from_elf_section | |
4510 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4511 | if (name == NULL) | |
4512 | name = _("<unknown>"); | |
4513 | else if (name[0] == 0) | |
fd361982 | 4514 | name = bfd_section_name (sec); |
7793f4d0 | 4515 | } |
4eca0228 | 4516 | _bfd_error_handler |
695344c0 | 4517 | /* xgettext:c-format */ |
871b3ab2 | 4518 | (_("%pB: !samegp reloc against symbol without .prologue: %s"), |
d003868e | 4519 | input_bfd, name); |
b34976b6 | 4520 | ret_val = FALSE; |
7793f4d0 RH |
4521 | break; |
4522 | } | |
4523 | ||
4524 | goto default_reloc; | |
4525 | } | |
4526 | ||
252b5132 RH |
4527 | case R_ALPHA_REFLONG: |
4528 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4529 | case R_ALPHA_DTPREL64: |
4530 | case R_ALPHA_TPREL64: | |
252b5132 | 4531 | { |
1bbc9cec RH |
4532 | long dynindx, dyntype = r_type; |
4533 | bfd_vma dynaddend; | |
252b5132 RH |
4534 | |
4535 | /* Careful here to remember RELATIVE relocations for global | |
4536 | variables for symbolic shared objects. */ | |
4537 | ||
3765b1be | 4538 | if (dynamic_symbol_p) |
252b5132 RH |
4539 | { |
4540 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4541 | dynindx = h->root.dynindx; |
4542 | dynaddend = addend; | |
3765b1be RH |
4543 | addend = 0, value = 0; |
4544 | } | |
4545 | else if (r_type == R_ALPHA_DTPREL64) | |
4546 | { | |
e1918d23 | 4547 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4548 | value -= dtp_base; |
4549 | goto default_reloc; | |
4550 | } | |
4551 | else if (r_type == R_ALPHA_TPREL64) | |
4552 | { | |
e1918d23 | 4553 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3cbc1e5e | 4554 | if (!bfd_link_dll (info)) |
1bbc9cec RH |
4555 | { |
4556 | value -= tp_base; | |
4557 | goto default_reloc; | |
4558 | } | |
4559 | dynindx = 0; | |
4560 | dynaddend = value - dtp_base; | |
252b5132 | 4561 | } |
0e1862bb | 4562 | else if (bfd_link_pic (info) |
cf35638d | 4563 | && r_symndx != STN_UNDEF |
d6ad34f6 | 4564 | && (input_section->flags & SEC_ALLOC) |
1d5316ab AM |
4565 | && !undef_weak_ref |
4566 | && !(unresolved_reloc | |
4567 | && (_bfd_elf_section_offset (output_bfd, info, | |
4568 | input_section, | |
4569 | rel->r_offset) | |
4570 | == (bfd_vma) -1))) | |
252b5132 | 4571 | { |
3765b1be RH |
4572 | if (r_type == R_ALPHA_REFLONG) |
4573 | { | |
4eca0228 | 4574 | _bfd_error_handler |
695344c0 | 4575 | /* xgettext:c-format */ |
871b3ab2 | 4576 | (_("%pB: unhandled dynamic relocation against %s"), |
d003868e | 4577 | input_bfd, |
3765b1be | 4578 | h->root.root.root.string); |
b34976b6 | 4579 | ret_val = FALSE; |
3765b1be | 4580 | } |
1bbc9cec RH |
4581 | dynindx = 0; |
4582 | dyntype = R_ALPHA_RELATIVE; | |
4583 | dynaddend = value; | |
252b5132 RH |
4584 | } |
4585 | else | |
4586 | goto default_reloc; | |
4587 | ||
3241278a RH |
4588 | if (input_section->flags & SEC_ALLOC) |
4589 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4590 | srel, rel->r_offset, dynindx, | |
4591 | dyntype, dynaddend); | |
252b5132 RH |
4592 | } |
4593 | goto default_reloc; | |
4594 | ||
3765b1be | 4595 | case R_ALPHA_SREL16: |
84de6048 RH |
4596 | case R_ALPHA_SREL32: |
4597 | case R_ALPHA_SREL64: | |
3765b1be | 4598 | if (dynamic_symbol_p) |
07d6d2b8 | 4599 | { |
4eca0228 | 4600 | _bfd_error_handler |
695344c0 | 4601 | /* xgettext:c-format */ |
871b3ab2 | 4602 | (_("%pB: pc-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4603 | input_bfd, h->root.root.root.string); |
4604 | ret_val = FALSE; | |
4605 | } | |
3cbc1e5e | 4606 | else if (bfd_link_pic (info) |
0e1862bb | 4607 | && undef_weak_ref) |
07d6d2b8 | 4608 | { |
4eca0228 | 4609 | _bfd_error_handler |
695344c0 | 4610 | /* xgettext:c-format */ |
871b3ab2 | 4611 | (_("%pB: pc-relative relocation against undefined weak symbol %s"), |
07d6d2b8 AM |
4612 | input_bfd, h->root.root.root.string); |
4613 | ret_val = FALSE; | |
4614 | } | |
d6ad34f6 | 4615 | |
3765b1be | 4616 | |
84de6048 RH |
4617 | /* ??? .eh_frame references to discarded sections will be smashed |
4618 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4619 | NULL to be encoded as 0 in any format, so this works here. */ | |
1d5316ab AM |
4620 | if (r_symndx == STN_UNDEF |
4621 | || (unresolved_reloc | |
4622 | && _bfd_elf_section_offset (output_bfd, info, | |
4623 | input_section, | |
4624 | rel->r_offset) == (bfd_vma) -1)) | |
84de6048 RH |
4625 | howto = (elf64_alpha_howto_table |
4626 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4627 | goto default_reloc; | |
4628 | ||
3765b1be RH |
4629 | case R_ALPHA_TLSLDM: |
4630 | /* Ignore the symbol for the relocation. The result is always | |
4631 | the current module. */ | |
4632 | dynamic_symbol_p = 0; | |
4633 | /* FALLTHRU */ | |
4634 | ||
4635 | case R_ALPHA_TLSGD: | |
4636 | if (!gotent->reloc_done) | |
4637 | { | |
4638 | gotent->reloc_done = 1; | |
4639 | ||
4640 | /* Note that the module index for the main program is 1. */ | |
0e1862bb L |
4641 | bfd_put_64 (output_bfd, |
4642 | !bfd_link_pic (info) && !dynamic_symbol_p, | |
3765b1be RH |
4643 | sgot->contents + gotent->got_offset); |
4644 | ||
4645 | /* If the symbol has been forced local, output a | |
4646 | DTPMOD64 reloc, otherwise it will be handled in | |
4647 | finish_dynamic_symbol. */ | |
0e1862bb | 4648 | if (bfd_link_pic (info) && !dynamic_symbol_p) |
1bbc9cec RH |
4649 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4650 | gotent->got_offset, 0, | |
4651 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4652 | |
4653 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4654 | value = 0; | |
4655 | else | |
4656 | { | |
e1918d23 | 4657 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
07d6d2b8 | 4658 | value -= dtp_base; |
3765b1be RH |
4659 | } |
4660 | bfd_put_64 (output_bfd, value, | |
4661 | sgot->contents + gotent->got_offset + 8); | |
4662 | } | |
4663 | ||
4664 | value = (sgot->output_section->vma | |
4665 | + sgot->output_offset | |
4666 | + gotent->got_offset); | |
4667 | value -= gp; | |
4668 | goto default_reloc; | |
4669 | ||
4670 | case R_ALPHA_DTPRELHI: | |
4671 | case R_ALPHA_DTPRELLO: | |
4672 | case R_ALPHA_DTPREL16: | |
4673 | if (dynamic_symbol_p) | |
07d6d2b8 | 4674 | { |
4eca0228 | 4675 | _bfd_error_handler |
695344c0 | 4676 | /* xgettext:c-format */ |
871b3ab2 | 4677 | (_("%pB: dtp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4678 | input_bfd, h->root.root.root.string); |
4679 | ret_val = FALSE; | |
4680 | } | |
e1918d23 | 4681 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4682 | value -= dtp_base; |
9e756d64 RH |
4683 | if (r_type == R_ALPHA_DTPRELHI) |
4684 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4685 | goto default_reloc; |
4686 | ||
4687 | case R_ALPHA_TPRELHI: | |
4688 | case R_ALPHA_TPRELLO: | |
4689 | case R_ALPHA_TPREL16: | |
3cbc1e5e | 4690 | if (bfd_link_dll (info)) |
9e756d64 | 4691 | { |
4eca0228 | 4692 | _bfd_error_handler |
695344c0 | 4693 | /* xgettext:c-format */ |
871b3ab2 | 4694 | (_("%pB: TLS local exec code cannot be linked into shared objects"), |
d003868e | 4695 | input_bfd); |
07d6d2b8 | 4696 | ret_val = FALSE; |
9e756d64 RH |
4697 | } |
4698 | else if (dynamic_symbol_p) | |
07d6d2b8 | 4699 | { |
4eca0228 | 4700 | _bfd_error_handler |
695344c0 | 4701 | /* xgettext:c-format */ |
871b3ab2 | 4702 | (_("%pB: tp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4703 | input_bfd, h->root.root.root.string); |
4704 | ret_val = FALSE; | |
4705 | } | |
e1918d23 | 4706 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4707 | value -= tp_base; |
9e756d64 RH |
4708 | if (r_type == R_ALPHA_TPRELHI) |
4709 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4710 | goto default_reloc; |
4711 | ||
4712 | case R_ALPHA_GOTDTPREL: | |
4713 | case R_ALPHA_GOTTPREL: | |
4714 | BFD_ASSERT(sgot != NULL); | |
4715 | BFD_ASSERT(gp != 0); | |
4716 | BFD_ASSERT(gotent != NULL); | |
4717 | BFD_ASSERT(gotent->use_count >= 1); | |
4718 | ||
4719 | if (!gotent->reloc_done) | |
4720 | { | |
4721 | gotent->reloc_done = 1; | |
4722 | ||
4723 | if (dynamic_symbol_p) | |
4724 | value = 0; | |
4725 | else | |
4726 | { | |
e1918d23 | 4727 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4728 | if (r_type == R_ALPHA_GOTDTPREL) |
4729 | value -= dtp_base; | |
28fbeab8 | 4730 | else if (bfd_link_executable (info)) |
1bbc9cec RH |
4731 | value -= tp_base; |
4732 | else | |
4733 | { | |
4734 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4735 | gotent->got_offset, 0, | |
4736 | R_ALPHA_TPREL64, | |
4737 | value - dtp_base); | |
4738 | value = 0; | |
4739 | } | |
3765b1be RH |
4740 | } |
4741 | bfd_put_64 (output_bfd, value, | |
4742 | sgot->contents + gotent->got_offset); | |
4743 | } | |
4744 | ||
4745 | value = (sgot->output_section->vma | |
4746 | + sgot->output_offset | |
4747 | + gotent->got_offset); | |
4748 | value -= gp; | |
4749 | goto default_reloc; | |
4750 | ||
252b5132 RH |
4751 | default: |
4752 | default_reloc: | |
4753 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4754 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4755 | break; |
4756 | } | |
4757 | ||
4758 | switch (r) | |
4759 | { | |
4760 | case bfd_reloc_ok: | |
4761 | break; | |
4762 | ||
4763 | case bfd_reloc_overflow: | |
4764 | { | |
4765 | const char *name; | |
4766 | ||
ed4de5e2 JJ |
4767 | /* Don't warn if the overflow is due to pc relative reloc |
4768 | against discarded section. Section optimization code should | |
4769 | handle it. */ | |
4770 | ||
4771 | if (r_symndx < symtab_hdr->sh_info | |
4772 | && sec != NULL && howto->pc_relative | |
dbaa2011 | 4773 | && discarded_section (sec)) |
ed4de5e2 JJ |
4774 | break; |
4775 | ||
252b5132 | 4776 | if (h != NULL) |
dfeffb9f | 4777 | name = NULL; |
252b5132 RH |
4778 | else |
4779 | { | |
4780 | name = (bfd_elf_string_from_elf_section | |
4781 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4782 | if (name == NULL) | |
b34976b6 | 4783 | return FALSE; |
252b5132 | 4784 | if (*name == '\0') |
fd361982 | 4785 | name = bfd_section_name (sec); |
252b5132 | 4786 | } |
1a72702b AM |
4787 | (*info->callbacks->reloc_overflow) |
4788 | (info, (h ? &h->root.root : NULL), name, howto->name, | |
4789 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
4790 | } |
4791 | break; | |
4792 | ||
4793 | default: | |
4794 | case bfd_reloc_outofrange: | |
4795 | abort (); | |
4796 | } | |
4797 | } | |
4798 | ||
f16fbd61 | 4799 | return ret_val; |
252b5132 RH |
4800 | } |
4801 | ||
4802 | /* Finish up dynamic symbol handling. We set the contents of various | |
4803 | dynamic sections here. */ | |
4804 | ||
b34976b6 | 4805 | static bfd_boolean |
a7519a3c RH |
4806 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4807 | struct elf_link_hash_entry *h, | |
4808 | Elf_Internal_Sym *sym) | |
252b5132 | 4809 | { |
6ec7057a | 4810 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 | 4811 | |
6ec7057a | 4812 | if (h->needs_plt) |
252b5132 RH |
4813 | { |
4814 | /* Fill in the .plt entry for this symbol. */ | |
4815 | asection *splt, *sgot, *srel; | |
4816 | Elf_Internal_Rela outrel; | |
947216bf | 4817 | bfd_byte *loc; |
252b5132 RH |
4818 | bfd_vma got_addr, plt_addr; |
4819 | bfd_vma plt_index; | |
4820 | struct alpha_elf_got_entry *gotent; | |
4821 | ||
4822 | BFD_ASSERT (h->dynindx != -1); | |
4823 | ||
ce558b89 | 4824 | splt = elf_hash_table (info)->splt; |
252b5132 | 4825 | BFD_ASSERT (splt != NULL); |
ce558b89 | 4826 | srel = elf_hash_table (info)->srelplt; |
252b5132 | 4827 | BFD_ASSERT (srel != NULL); |
252b5132 | 4828 | |
6ec7057a RH |
4829 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4830 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4831 | && gotent->use_count > 0) | |
4832 | { | |
4833 | unsigned int insn; | |
4834 | int disp; | |
252b5132 | 4835 | |
6ec7057a RH |
4836 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4837 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4838 | |
6ec7057a RH |
4839 | BFD_ASSERT (gotent->got_offset != -1); |
4840 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4841 | |
6ec7057a RH |
4842 | got_addr = (sgot->output_section->vma |
4843 | + sgot->output_offset | |
4844 | + gotent->got_offset); | |
4845 | plt_addr = (splt->output_section->vma | |
4846 | + splt->output_offset | |
4847 | + gotent->plt_offset); | |
252b5132 | 4848 | |
6ec7057a | 4849 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4850 | |
6ec7057a RH |
4851 | /* Fill in the entry in the procedure linkage table. */ |
4852 | if (elf64_alpha_use_secureplt) | |
4853 | { | |
4854 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4855 | insn = INSN_AD (INSN_BR, 31, disp); | |
4856 | bfd_put_32 (output_bfd, insn, | |
4857 | splt->contents + gotent->plt_offset); | |
252b5132 | 4858 | |
6ec7057a RH |
4859 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4860 | / NEW_PLT_ENTRY_SIZE); | |
4861 | } | |
4862 | else | |
4863 | { | |
4864 | disp = -(gotent->plt_offset + 4); | |
4865 | insn = INSN_AD (INSN_BR, 28, disp); | |
4866 | bfd_put_32 (output_bfd, insn, | |
4867 | splt->contents + gotent->plt_offset); | |
4868 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4869 | splt->contents + gotent->plt_offset + 4); | |
4870 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4871 | splt->contents + gotent->plt_offset + 8); | |
4872 | ||
4873 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4874 | / OLD_PLT_ENTRY_SIZE); | |
4875 | } | |
252b5132 | 4876 | |
6ec7057a RH |
4877 | /* Fill in the entry in the .rela.plt section. */ |
4878 | outrel.r_offset = got_addr; | |
4879 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4880 | outrel.r_addend = 0; | |
252b5132 | 4881 | |
6ec7057a RH |
4882 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4883 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4884 | |
6ec7057a RH |
4885 | /* Fill in the entry in the .got. */ |
4886 | bfd_put_64 (output_bfd, plt_addr, | |
4887 | sgot->contents + gotent->got_offset); | |
4888 | } | |
252b5132 RH |
4889 | } |
4890 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4891 | { | |
4892 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4893 | asection *srel; | |
252b5132 RH |
4894 | struct alpha_elf_got_entry *gotent; |
4895 | ||
ce558b89 | 4896 | srel = elf_hash_table (info)->srelgot; |
252b5132 RH |
4897 | BFD_ASSERT (srel != NULL); |
4898 | ||
252b5132 RH |
4899 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4900 | gotent != NULL; | |
4901 | gotent = gotent->next) | |
4902 | { | |
f44f99a5 | 4903 | asection *sgot; |
1bbc9cec | 4904 | long r_type; |
3765b1be | 4905 | |
f44f99a5 RH |
4906 | if (gotent->use_count == 0) |
4907 | continue; | |
4908 | ||
4909 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4910 | |
4911 | r_type = gotent->reloc_type; | |
4912 | switch (r_type) | |
4913 | { | |
4914 | case R_ALPHA_LITERAL: | |
4915 | r_type = R_ALPHA_GLOB_DAT; | |
4916 | break; | |
4917 | case R_ALPHA_TLSGD: | |
4918 | r_type = R_ALPHA_DTPMOD64; | |
4919 | break; | |
4920 | case R_ALPHA_GOTDTPREL: | |
4921 | r_type = R_ALPHA_DTPREL64; | |
4922 | break; | |
4923 | case R_ALPHA_GOTTPREL: | |
4924 | r_type = R_ALPHA_TPREL64; | |
4925 | break; | |
4926 | case R_ALPHA_TLSLDM: | |
4927 | default: | |
4928 | abort (); | |
4929 | } | |
4930 | ||
68ffbac6 | 4931 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
1bbc9cec RH |
4932 | gotent->got_offset, h->dynindx, |
4933 | r_type, gotent->addend); | |
3765b1be RH |
4934 | |
4935 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
68ffbac6 | 4936 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
1bbc9cec RH |
4937 | gotent->got_offset + 8, h->dynindx, |
4938 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4939 | } |
4940 | } | |
4941 | ||
4942 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4943 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 RS |
4944 | || h == elf_hash_table (info)->hgot |
4945 | || h == elf_hash_table (info)->hplt) | |
252b5132 RH |
4946 | sym->st_shndx = SHN_ABS; |
4947 | ||
b34976b6 | 4948 | return TRUE; |
252b5132 RH |
4949 | } |
4950 | ||
4951 | /* Finish up the dynamic sections. */ | |
4952 | ||
b34976b6 | 4953 | static bfd_boolean |
a7519a3c RH |
4954 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4955 | struct bfd_link_info *info) | |
252b5132 RH |
4956 | { |
4957 | bfd *dynobj; | |
4958 | asection *sdyn; | |
4959 | ||
4960 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 4961 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4962 | |
4963 | if (elf_hash_table (info)->dynamic_sections_created) | |
4964 | { | |
6ec7057a | 4965 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4966 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4967 | bfd_vma plt_vma, gotplt_vma; |
252b5132 | 4968 | |
ce558b89 AM |
4969 | splt = elf_hash_table (info)->splt; |
4970 | srelaplt = elf_hash_table (info)->srelplt; | |
252b5132 RH |
4971 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4972 | ||
6ec7057a RH |
4973 | plt_vma = splt->output_section->vma + splt->output_offset; |
4974 | ||
4975 | gotplt_vma = 0; | |
4976 | if (elf64_alpha_use_secureplt) | |
4977 | { | |
ce558b89 | 4978 | sgotplt = elf_hash_table (info)->sgotplt; |
6ec7057a RH |
4979 | BFD_ASSERT (sgotplt != NULL); |
4980 | if (sgotplt->size > 0) | |
4981 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4982 | } | |
4983 | ||
252b5132 | 4984 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4985 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4986 | for (; dyncon < dynconend; dyncon++) |
4987 | { | |
4988 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4989 | |
4990 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4991 | ||
4992 | switch (dyn.d_tag) | |
4993 | { | |
4994 | case DT_PLTGOT: | |
6ec7057a RH |
4995 | dyn.d_un.d_ptr |
4996 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4997 | break; | |
252b5132 | 4998 | case DT_PLTRELSZ: |
6ec7057a RH |
4999 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
5000 | break; | |
252b5132 | 5001 | case DT_JMPREL: |
4ade44b7 AM |
5002 | dyn.d_un.d_ptr = srelaplt ? (srelaplt->output_section->vma |
5003 | + srelaplt->output_offset) : 0; | |
6ec7057a | 5004 | break; |
252b5132 RH |
5005 | } |
5006 | ||
5007 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5008 | } | |
5009 | ||
6ec7057a | 5010 | /* Initialize the plt header. */ |
eea6121a | 5011 | if (splt->size > 0) |
252b5132 | 5012 | { |
6ec7057a RH |
5013 | unsigned int insn; |
5014 | int ofs; | |
5015 | ||
5016 | if (elf64_alpha_use_secureplt) | |
5017 | { | |
5018 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
5019 | ||
5020 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
5021 | bfd_put_32 (output_bfd, insn, splt->contents); | |
5022 | ||
5023 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
5024 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
5025 | ||
5026 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
5027 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
5028 | ||
5029 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
5030 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
5031 | ||
5032 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
5033 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
5034 | ||
5035 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
5036 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
5037 | ||
5038 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
5039 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
5040 | ||
5041 | insn = INSN_AB (INSN_JMP, 31, 27); | |
5042 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
5043 | ||
5044 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
5045 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
5046 | } | |
5047 | else | |
5048 | { | |
5049 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
5050 | bfd_put_32 (output_bfd, insn, splt->contents); | |
5051 | ||
5052 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
5053 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
5054 | ||
5055 | insn = INSN_UNOP; | |
5056 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
5057 | ||
5058 | insn = INSN_AB (INSN_JMP, 27, 27); | |
5059 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
5060 | ||
5061 | /* The next two words will be filled in by ld.so. */ | |
5062 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
5063 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
5064 | } | |
252b5132 | 5065 | |
eecdbe52 | 5066 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
5067 | } |
5068 | } | |
5069 | ||
b34976b6 | 5070 | return TRUE; |
252b5132 RH |
5071 | } |
5072 | ||
96e2734b RH |
5073 | /* We need to use a special link routine to handle the .mdebug section. |
5074 | We need to merge all instances of these sections together, not write | |
5075 | them all out sequentially. */ | |
252b5132 | 5076 | |
b34976b6 | 5077 | static bfd_boolean |
a7519a3c | 5078 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
5079 | { |
5080 | asection *o; | |
5081 | struct bfd_link_order *p; | |
96e2734b | 5082 | asection *mdebug_sec; |
252b5132 RH |
5083 | struct ecoff_debug_info debug; |
5084 | const struct ecoff_debug_swap *swap | |
5085 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5086 | HDRR *symhdr = &debug.symbolic_header; | |
4dfe6ac6 NC |
5087 | void * mdebug_handle = NULL; |
5088 | struct alpha_elf_link_hash_table * htab; | |
5089 | ||
5090 | htab = alpha_elf_hash_table (info); | |
5091 | if (htab == NULL) | |
5092 | return FALSE; | |
252b5132 | 5093 | |
96e2734b | 5094 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 5095 | mdebug_sec = NULL; |
252b5132 RH |
5096 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
5097 | { | |
252b5132 RH |
5098 | if (strcmp (o->name, ".mdebug") == 0) |
5099 | { | |
5100 | struct extsym_info einfo; | |
5101 | ||
5102 | /* We have found the .mdebug section in the output file. | |
5103 | Look through all the link_orders comprising it and merge | |
5104 | the information together. */ | |
5105 | symhdr->magic = swap->sym_magic; | |
5106 | /* FIXME: What should the version stamp be? */ | |
5107 | symhdr->vstamp = 0; | |
5108 | symhdr->ilineMax = 0; | |
5109 | symhdr->cbLine = 0; | |
5110 | symhdr->idnMax = 0; | |
5111 | symhdr->ipdMax = 0; | |
5112 | symhdr->isymMax = 0; | |
5113 | symhdr->ioptMax = 0; | |
5114 | symhdr->iauxMax = 0; | |
5115 | symhdr->issMax = 0; | |
5116 | symhdr->issExtMax = 0; | |
5117 | symhdr->ifdMax = 0; | |
5118 | symhdr->crfd = 0; | |
5119 | symhdr->iextMax = 0; | |
5120 | ||
5121 | /* We accumulate the debugging information itself in the | |
5122 | debug_info structure. */ | |
5123 | debug.line = NULL; | |
5124 | debug.external_dnr = NULL; | |
5125 | debug.external_pdr = NULL; | |
5126 | debug.external_sym = NULL; | |
5127 | debug.external_opt = NULL; | |
5128 | debug.external_aux = NULL; | |
5129 | debug.ss = NULL; | |
5130 | debug.ssext = debug.ssext_end = NULL; | |
5131 | debug.external_fdr = NULL; | |
5132 | debug.external_rfd = NULL; | |
5133 | debug.external_ext = debug.external_ext_end = NULL; | |
5134 | ||
5135 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
2c3fc389 | 5136 | if (mdebug_handle == NULL) |
b34976b6 | 5137 | return FALSE; |
252b5132 RH |
5138 | |
5139 | if (1) | |
5140 | { | |
5141 | asection *s; | |
5142 | EXTR esym; | |
52b9d213 | 5143 | bfd_vma last = 0; |
252b5132 RH |
5144 | unsigned int i; |
5145 | static const char * const name[] = | |
5146 | { | |
5147 | ".text", ".init", ".fini", ".data", | |
5148 | ".rodata", ".sdata", ".sbss", ".bss" | |
5149 | }; | |
5150 | static const int sc[] = { scText, scInit, scFini, scData, | |
5151 | scRData, scSData, scSBss, scBss }; | |
5152 | ||
5153 | esym.jmptbl = 0; | |
5154 | esym.cobol_main = 0; | |
5155 | esym.weakext = 0; | |
5156 | esym.reserved = 0; | |
5157 | esym.ifd = ifdNil; | |
5158 | esym.asym.iss = issNil; | |
5159 | esym.asym.st = stLocal; | |
5160 | esym.asym.reserved = 0; | |
5161 | esym.asym.index = indexNil; | |
5162 | for (i = 0; i < 8; i++) | |
5163 | { | |
5164 | esym.asym.sc = sc[i]; | |
5165 | s = bfd_get_section_by_name (abfd, name[i]); | |
5166 | if (s != NULL) | |
5167 | { | |
5168 | esym.asym.value = s->vma; | |
eea6121a | 5169 | last = s->vma + s->size; |
252b5132 RH |
5170 | } |
5171 | else | |
5172 | esym.asym.value = last; | |
5173 | ||
5174 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5175 | name[i], &esym)) | |
b34976b6 | 5176 | return FALSE; |
252b5132 RH |
5177 | } |
5178 | } | |
5179 | ||
8423293d | 5180 | for (p = o->map_head.link_order; |
252b5132 RH |
5181 | p != (struct bfd_link_order *) NULL; |
5182 | p = p->next) | |
5183 | { | |
5184 | asection *input_section; | |
5185 | bfd *input_bfd; | |
5186 | const struct ecoff_debug_swap *input_swap; | |
5187 | struct ecoff_debug_info input_debug; | |
5188 | char *eraw_src; | |
5189 | char *eraw_end; | |
5190 | ||
5191 | if (p->type != bfd_indirect_link_order) | |
5192 | { | |
fd96f80f | 5193 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5194 | continue; |
5195 | abort (); | |
5196 | } | |
5197 | ||
5198 | input_section = p->u.indirect.section; | |
5199 | input_bfd = input_section->owner; | |
5200 | ||
0ffa91dd NC |
5201 | if (! is_alpha_elf (input_bfd)) |
5202 | /* I don't know what a non ALPHA ELF bfd would be | |
5203 | doing with a .mdebug section, but I don't really | |
5204 | want to deal with it. */ | |
5205 | continue; | |
252b5132 RH |
5206 | |
5207 | input_swap = (get_elf_backend_data (input_bfd) | |
5208 | ->elf_backend_ecoff_debug_swap); | |
5209 | ||
eea6121a | 5210 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5211 | |
5212 | /* The ECOFF linking code expects that we have already | |
5213 | read in the debugging information and set up an | |
5214 | ecoff_debug_info structure, so we do that now. */ | |
5215 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5216 | &input_debug)) | |
b34976b6 | 5217 | return FALSE; |
252b5132 RH |
5218 | |
5219 | if (! (bfd_ecoff_debug_accumulate | |
5220 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5221 | &input_debug, input_swap, info))) | |
b34976b6 | 5222 | return FALSE; |
252b5132 RH |
5223 | |
5224 | /* Loop through the external symbols. For each one with | |
5225 | interesting information, try to find the symbol in | |
5226 | the linker global hash table and save the information | |
5227 | for the output external symbols. */ | |
21d799b5 | 5228 | eraw_src = (char *) input_debug.external_ext; |
252b5132 RH |
5229 | eraw_end = (eraw_src |
5230 | + (input_debug.symbolic_header.iextMax | |
5231 | * input_swap->external_ext_size)); | |
5232 | for (; | |
5233 | eraw_src < eraw_end; | |
5234 | eraw_src += input_swap->external_ext_size) | |
5235 | { | |
5236 | EXTR ext; | |
5237 | const char *name; | |
5238 | struct alpha_elf_link_hash_entry *h; | |
5239 | ||
2c3fc389 | 5240 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
252b5132 RH |
5241 | if (ext.asym.sc == scNil |
5242 | || ext.asym.sc == scUndefined | |
5243 | || ext.asym.sc == scSUndefined) | |
5244 | continue; | |
5245 | ||
5246 | name = input_debug.ssext + ext.asym.iss; | |
4dfe6ac6 | 5247 | h = alpha_elf_link_hash_lookup (htab, name, FALSE, FALSE, TRUE); |
252b5132 RH |
5248 | if (h == NULL || h->esym.ifd != -2) |
5249 | continue; | |
5250 | ||
5251 | if (ext.ifd != -1) | |
5252 | { | |
5253 | BFD_ASSERT (ext.ifd | |
5254 | < input_debug.symbolic_header.ifdMax); | |
5255 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5256 | } | |
5257 | ||
5258 | h->esym = ext; | |
5259 | } | |
5260 | ||
5261 | /* Free up the information we just read. */ | |
5262 | free (input_debug.line); | |
5263 | free (input_debug.external_dnr); | |
5264 | free (input_debug.external_pdr); | |
5265 | free (input_debug.external_sym); | |
5266 | free (input_debug.external_opt); | |
5267 | free (input_debug.external_aux); | |
5268 | free (input_debug.ss); | |
5269 | free (input_debug.ssext); | |
5270 | free (input_debug.external_fdr); | |
5271 | free (input_debug.external_rfd); | |
5272 | free (input_debug.external_ext); | |
5273 | ||
5274 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5275 | elf_link_input_bfd ignores this section. */ | |
5276 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5277 | } | |
5278 | ||
252b5132 RH |
5279 | /* Build the external symbol information. */ |
5280 | einfo.abfd = abfd; | |
5281 | einfo.info = info; | |
5282 | einfo.debug = &debug; | |
5283 | einfo.swap = swap; | |
b34976b6 | 5284 | einfo.failed = FALSE; |
252b5132 RH |
5285 | elf_link_hash_traverse (elf_hash_table (info), |
5286 | elf64_alpha_output_extsym, | |
2c3fc389 | 5287 | &einfo); |
252b5132 | 5288 | if (einfo.failed) |
b34976b6 | 5289 | return FALSE; |
252b5132 RH |
5290 | |
5291 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5292 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5293 | |
5294 | /* Skip this section later on (I don't think this currently | |
5295 | matters, but someday it might). */ | |
8423293d | 5296 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5297 | |
5298 | mdebug_sec = o; | |
5299 | } | |
252b5132 RH |
5300 | } |
5301 | ||
5302 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5303 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5304 | return FALSE; |
252b5132 RH |
5305 | |
5306 | /* Now write out the computed sections. */ | |
5307 | ||
5308 | /* The .got subsections... */ | |
5309 | { | |
5310 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
4dfe6ac6 | 5311 | for (i = htab->got_list; |
252b5132 RH |
5312 | i != NULL; |
5313 | i = alpha_elf_tdata(i)->got_link_next) | |
5314 | { | |
5315 | asection *sgot; | |
5316 | ||
5317 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5318 | if (i == dynobj) | |
5319 | continue; | |
5320 | ||
5321 | sgot = alpha_elf_tdata(i)->got; | |
5322 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5323 | sgot->contents, |
5324 | (file_ptr) sgot->output_offset, | |
eea6121a | 5325 | sgot->size)) |
b34976b6 | 5326 | return FALSE; |
252b5132 RH |
5327 | } |
5328 | } | |
5329 | ||
252b5132 RH |
5330 | if (mdebug_sec != (asection *) NULL) |
5331 | { | |
5332 | BFD_ASSERT (abfd->output_has_begun); | |
5333 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5334 | swap, info, | |
5335 | mdebug_sec->filepos)) | |
b34976b6 | 5336 | return FALSE; |
252b5132 RH |
5337 | |
5338 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5339 | } | |
5340 | ||
b34976b6 | 5341 | return TRUE; |
252b5132 | 5342 | } |
fcfbdf31 JJ |
5343 | |
5344 | static enum elf_reloc_type_class | |
7e612e98 AM |
5345 | elf64_alpha_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5346 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
5347 | const Elf_Internal_Rela *rela) | |
fcfbdf31 | 5348 | { |
f51e552e | 5349 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5350 | { |
5351 | case R_ALPHA_RELATIVE: | |
5352 | return reloc_class_relative; | |
5353 | case R_ALPHA_JMP_SLOT: | |
5354 | return reloc_class_plt; | |
5355 | case R_ALPHA_COPY: | |
5356 | return reloc_class_copy; | |
5357 | default: | |
5358 | return reloc_class_normal; | |
5359 | } | |
5360 | } | |
252b5132 | 5361 | \f |
b35d266b | 5362 | static const struct bfd_elf_special_section elf64_alpha_special_sections[] = |
2f89ff8d | 5363 | { |
07d6d2b8 | 5364 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
0112cd26 | 5365 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
07d6d2b8 | 5366 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
5367 | }; |
5368 | ||
252b5132 RH |
5369 | /* ECOFF swapping routines. These are used when dealing with the |
5370 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5371 | from elf32-mips.c. */ |
252b5132 RH |
5372 | static const struct ecoff_debug_swap |
5373 | elf64_alpha_ecoff_debug_swap = | |
5374 | { | |
5375 | /* Symbol table magic number. */ | |
5376 | magicSym2, | |
5377 | /* Alignment of debugging information. E.g., 4. */ | |
5378 | 8, | |
5379 | /* Sizes of external symbolic information. */ | |
5380 | sizeof (struct hdr_ext), | |
5381 | sizeof (struct dnr_ext), | |
5382 | sizeof (struct pdr_ext), | |
5383 | sizeof (struct sym_ext), | |
5384 | sizeof (struct opt_ext), | |
5385 | sizeof (struct fdr_ext), | |
5386 | sizeof (struct rfd_ext), | |
5387 | sizeof (struct ext_ext), | |
5388 | /* Functions to swap in external symbolic data. */ | |
5389 | ecoff_swap_hdr_in, | |
5390 | ecoff_swap_dnr_in, | |
5391 | ecoff_swap_pdr_in, | |
5392 | ecoff_swap_sym_in, | |
5393 | ecoff_swap_opt_in, | |
5394 | ecoff_swap_fdr_in, | |
5395 | ecoff_swap_rfd_in, | |
5396 | ecoff_swap_ext_in, | |
5397 | _bfd_ecoff_swap_tir_in, | |
5398 | _bfd_ecoff_swap_rndx_in, | |
5399 | /* Functions to swap out external symbolic data. */ | |
5400 | ecoff_swap_hdr_out, | |
5401 | ecoff_swap_dnr_out, | |
5402 | ecoff_swap_pdr_out, | |
5403 | ecoff_swap_sym_out, | |
5404 | ecoff_swap_opt_out, | |
5405 | ecoff_swap_fdr_out, | |
5406 | ecoff_swap_rfd_out, | |
5407 | ecoff_swap_ext_out, | |
5408 | _bfd_ecoff_swap_tir_out, | |
5409 | _bfd_ecoff_swap_rndx_out, | |
5410 | /* Function to read in symbolic data. */ | |
5411 | elf64_alpha_read_ecoff_info | |
5412 | }; | |
5413 | \f | |
70bcb145 JW |
5414 | /* Use a non-standard hash bucket size of 8. */ |
5415 | ||
562ace6b | 5416 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5417 | { |
5418 | sizeof (Elf64_External_Ehdr), | |
5419 | sizeof (Elf64_External_Phdr), | |
5420 | sizeof (Elf64_External_Shdr), | |
5421 | sizeof (Elf64_External_Rel), | |
5422 | sizeof (Elf64_External_Rela), | |
5423 | sizeof (Elf64_External_Sym), | |
5424 | sizeof (Elf64_External_Dyn), | |
5425 | sizeof (Elf_External_Note), | |
5426 | 8, | |
5427 | 1, | |
45d6a902 | 5428 | 64, 3, |
70bcb145 JW |
5429 | ELFCLASS64, EV_CURRENT, |
5430 | bfd_elf64_write_out_phdrs, | |
5431 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 5432 | bfd_elf64_checksum_contents, |
70bcb145 | 5433 | bfd_elf64_write_relocs, |
73ff0d56 | 5434 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5435 | bfd_elf64_swap_symbol_out, |
5436 | bfd_elf64_slurp_reloc_table, | |
5437 | bfd_elf64_slurp_symbol_table, | |
5438 | bfd_elf64_swap_dyn_in, | |
5439 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5440 | bfd_elf64_swap_reloc_in, |
5441 | bfd_elf64_swap_reloc_out, | |
5442 | bfd_elf64_swap_reloca_in, | |
5443 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5444 | }; |
5445 | ||
6d00b590 | 5446 | #define TARGET_LITTLE_SYM alpha_elf64_vec |
252b5132 RH |
5447 | #define TARGET_LITTLE_NAME "elf64-alpha" |
5448 | #define ELF_ARCH bfd_arch_alpha | |
ae95ffa6 | 5449 | #define ELF_TARGET_ID ALPHA_ELF_DATA |
56fc028e AJ |
5450 | #define ELF_MACHINE_CODE EM_ALPHA |
5451 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 5452 | #define ELF_COMMONPAGESIZE 0x2000 |
252b5132 RH |
5453 | |
5454 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5455 | elf64_alpha_bfd_link_hash_table_create | |
5456 | ||
5457 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5458 | elf64_alpha_bfd_reloc_type_lookup | |
157090f7 AM |
5459 | #define bfd_elf64_bfd_reloc_name_lookup \ |
5460 | elf64_alpha_bfd_reloc_name_lookup | |
252b5132 RH |
5461 | #define elf_info_to_howto \ |
5462 | elf64_alpha_info_to_howto | |
5463 | ||
5464 | #define bfd_elf64_mkobject \ | |
5465 | elf64_alpha_mkobject | |
5466 | #define elf_backend_object_p \ | |
5467 | elf64_alpha_object_p | |
5468 | ||
5469 | #define elf_backend_section_from_shdr \ | |
5470 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5471 | #define elf_backend_section_flags \ |
5472 | elf64_alpha_section_flags | |
252b5132 RH |
5473 | #define elf_backend_fake_sections \ |
5474 | elf64_alpha_fake_sections | |
5475 | ||
5476 | #define bfd_elf64_bfd_is_local_label_name \ | |
5477 | elf64_alpha_is_local_label_name | |
5478 | #define bfd_elf64_find_nearest_line \ | |
5479 | elf64_alpha_find_nearest_line | |
5480 | #define bfd_elf64_bfd_relax_section \ | |
5481 | elf64_alpha_relax_section | |
5482 | ||
5483 | #define elf_backend_add_symbol_hook \ | |
5484 | elf64_alpha_add_symbol_hook | |
13285a1b AM |
5485 | #define elf_backend_relocs_compatible \ |
5486 | _bfd_elf_relocs_compatible | |
6fc5bb57 AM |
5487 | #define elf_backend_sort_relocs_p \ |
5488 | elf64_alpha_sort_relocs_p | |
252b5132 RH |
5489 | #define elf_backend_check_relocs \ |
5490 | elf64_alpha_check_relocs | |
5491 | #define elf_backend_create_dynamic_sections \ | |
5492 | elf64_alpha_create_dynamic_sections | |
5493 | #define elf_backend_adjust_dynamic_symbol \ | |
5494 | elf64_alpha_adjust_dynamic_symbol | |
747ffa7b AM |
5495 | #define elf_backend_merge_symbol_attribute \ |
5496 | elf64_alpha_merge_symbol_attribute | |
48f4b4f5 RH |
5497 | #define elf_backend_copy_indirect_symbol \ |
5498 | elf64_alpha_copy_indirect_symbol | |
252b5132 RH |
5499 | #define elf_backend_always_size_sections \ |
5500 | elf64_alpha_always_size_sections | |
5501 | #define elf_backend_size_dynamic_sections \ | |
5502 | elf64_alpha_size_dynamic_sections | |
74541ad4 | 5503 | #define elf_backend_omit_section_dynsym \ |
d00dd7dc | 5504 | _bfd_elf_omit_section_dynsym_all |
252b5132 RH |
5505 | #define elf_backend_relocate_section \ |
5506 | elf64_alpha_relocate_section | |
5507 | #define elf_backend_finish_dynamic_symbol \ | |
5508 | elf64_alpha_finish_dynamic_symbol | |
5509 | #define elf_backend_finish_dynamic_sections \ | |
5510 | elf64_alpha_finish_dynamic_sections | |
5511 | #define bfd_elf64_bfd_final_link \ | |
5512 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5513 | #define elf_backend_reloc_type_class \ |
5514 | elf64_alpha_reloc_type_class | |
252b5132 | 5515 | |
e117360e RH |
5516 | #define elf_backend_can_gc_sections 1 |
5517 | #define elf_backend_gc_mark_hook elf64_alpha_gc_mark_hook | |
e117360e | 5518 | |
252b5132 RH |
5519 | #define elf_backend_ecoff_debug_swap \ |
5520 | &elf64_alpha_ecoff_debug_swap | |
5521 | ||
70bcb145 JW |
5522 | #define elf_backend_size_info \ |
5523 | alpha_elf_size_info | |
5524 | ||
29ef7005 L |
5525 | #define elf_backend_special_sections \ |
5526 | elf64_alpha_special_sections | |
2f89ff8d | 5527 | |
38b1a46c | 5528 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5529 | #define elf_backend_want_got_plt 0 |
5530 | #define elf_backend_plt_readonly 0 | |
5531 | #define elf_backend_want_plt_sym 1 | |
5532 | #define elf_backend_got_header_size 0 | |
64f52338 | 5533 | #define elf_backend_dtrel_excludes_plt 1 |
252b5132 RH |
5534 | |
5535 | #include "elf64-target.h" | |
2238051f RH |
5536 | \f |
5537 | /* FreeBSD support. */ | |
5538 | ||
5539 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5540 | #define TARGET_LITTLE_SYM alpha_elf64_fbsd_vec |
2238051f RH |
5541 | #undef TARGET_LITTLE_NAME |
5542 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
d1036acb L |
5543 | #undef ELF_OSABI |
5544 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2238051f RH |
5545 | |
5546 | /* The kernel recognizes executables as valid only if they carry a | |
5547 | "FreeBSD" label in the ELF header. So we put this label on all | |
5548 | executables and (for simplicity) also all other object files. */ | |
5549 | ||
ed7e9d0b AM |
5550 | static bfd_boolean |
5551 | elf64_alpha_fbsd_init_file_header (bfd *abfd, struct bfd_link_info *info) | |
2238051f RH |
5552 | { |
5553 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5554 | ||
ed7e9d0b AM |
5555 | if (!_bfd_elf_init_file_header (abfd, info)) |
5556 | return FALSE; | |
5557 | ||
2238051f RH |
5558 | i_ehdrp = elf_elfheader (abfd); |
5559 | ||
5560 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 5561 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2238051f RH |
5562 | #ifdef OLD_FREEBSD_ABI_LABEL |
5563 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5564 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5565 | #endif | |
ed7e9d0b | 5566 | return TRUE; |
2238051f RH |
5567 | } |
5568 | ||
ed7e9d0b AM |
5569 | #undef elf_backend_init_file_header |
5570 | #define elf_backend_init_file_header \ | |
5571 | elf64_alpha_fbsd_init_file_header | |
2238051f | 5572 | |
571fe01f | 5573 | #undef elf64_bed |
2238051f RH |
5574 | #define elf64_bed elf64_alpha_fbsd_bed |
5575 | ||
5576 | #include "elf64-target.h" |