Commit | Line | Data |
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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
66eb6687 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
4dfe6ac6 | 3 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 11 | (at your option) any later version. |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
22 | ||
252b5132 RH |
23 | |
24 | /* We need a published ABI spec for this. Until one comes out, don't | |
25 | assume this'll remain unchanged forever. */ | |
26 | ||
252b5132 | 27 | #include "sysdep.h" |
3db64b00 | 28 | #include "bfd.h" |
252b5132 RH |
29 | #include "libbfd.h" |
30 | #include "elf-bfd.h" | |
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, \ | |
a7519a3c | 213 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (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 | ||
986a241f RH |
227 | /* Should we do dynamic things to this symbol? This differs from the |
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; | |
dc810e39 | 283 | bfd_size_type 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 | |
301 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
302 | ||
303 | struct alpha_elf_obj_tdata | |
304 | { | |
305 | struct elf_obj_tdata root; | |
306 | ||
307 | /* For every input file, these are the got entries for that object's | |
308 | local symbols. */ | |
309 | struct alpha_elf_got_entry ** local_got_entries; | |
310 | ||
311 | /* For every input file, this is the object that owns the got that | |
312 | this input file uses. */ | |
313 | bfd *gotobj; | |
314 | ||
315 | /* For every got, this is a linked list through the objects using this got */ | |
316 | bfd *in_got_link_next; | |
317 | ||
318 | /* For every got, this is a link to the next got subsegment. */ | |
319 | bfd *got_link_next; | |
320 | ||
321 | /* For every got, this is the section. */ | |
322 | asection *got; | |
323 | ||
3765b1be RH |
324 | /* For every got, this is it's total number of words. */ |
325 | int total_got_size; | |
252b5132 | 326 | |
3765b1be | 327 | /* For every got, this is the sum of the number of words required |
252b5132 | 328 | to hold all of the member object's local got. */ |
3765b1be | 329 | int local_got_size; |
252b5132 RH |
330 | }; |
331 | ||
332 | #define alpha_elf_tdata(abfd) \ | |
333 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
334 | ||
0ffa91dd NC |
335 | #define is_alpha_elf(bfd) \ |
336 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
337 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 338 | && elf_object_id (bfd) == ALPHA_ELF_DATA) |
0ffa91dd | 339 | |
b34976b6 | 340 | static bfd_boolean |
a7519a3c | 341 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 342 | { |
0ffa91dd | 343 | return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata), |
4dfe6ac6 | 344 | ALPHA_ELF_DATA); |
252b5132 RH |
345 | } |
346 | ||
b34976b6 | 347 | static bfd_boolean |
a7519a3c | 348 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 349 | { |
252b5132 RH |
350 | /* Set the right machine number for an Alpha ELF file. */ |
351 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
352 | } | |
353 | \f | |
a7519a3c RH |
354 | /* A relocation function which doesn't do anything. */ |
355 | ||
356 | static bfd_reloc_status_type | |
357 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
358 | asymbol *sym ATTRIBUTE_UNUSED, | |
359 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
360 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
361 | { | |
362 | if (output_bfd) | |
363 | reloc->address += sec->output_offset; | |
364 | return bfd_reloc_ok; | |
365 | } | |
366 | ||
367 | /* A relocation function used for an unsupported reloc. */ | |
368 | ||
369 | static bfd_reloc_status_type | |
370 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
371 | asymbol *sym ATTRIBUTE_UNUSED, | |
372 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
373 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
374 | { | |
375 | if (output_bfd) | |
376 | reloc->address += sec->output_offset; | |
377 | return bfd_reloc_notsupported; | |
378 | } | |
379 | ||
380 | /* Do the work of the GPDISP relocation. */ | |
381 | ||
382 | static bfd_reloc_status_type | |
383 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
384 | bfd_byte *p_lda) | |
385 | { | |
386 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
387 | bfd_vma addend; | |
388 | unsigned long i_ldah, i_lda; | |
389 | ||
390 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
391 | i_lda = bfd_get_32 (abfd, p_lda); | |
392 | ||
393 | /* Complain if the instructions are not correct. */ | |
394 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
395 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
396 | ret = bfd_reloc_dangerous; | |
397 | ||
398 | /* Extract the user-supplied offset, mirroring the sign extensions | |
399 | that the instructions perform. */ | |
400 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
401 | addend = (addend ^ 0x80008000) - 0x80008000; | |
402 | ||
403 | gpdisp += addend; | |
404 | ||
405 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
406 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
407 | ret = bfd_reloc_overflow; | |
408 | ||
409 | /* compensate for the sign extension again. */ | |
410 | i_ldah = ((i_ldah & 0xffff0000) | |
411 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
412 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
413 | ||
414 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
415 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
416 | ||
417 | return ret; | |
418 | } | |
419 | ||
420 | /* The special function for the GPDISP reloc. */ | |
421 | ||
422 | static bfd_reloc_status_type | |
423 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
424 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
425 | asection *input_section, bfd *output_bfd, | |
426 | char **err_msg) | |
427 | { | |
428 | bfd_reloc_status_type ret; | |
429 | bfd_vma gp, relocation; | |
430 | bfd_vma high_address; | |
431 | bfd_byte *p_ldah, *p_lda; | |
432 | ||
433 | /* Don't do anything if we're not doing a final link. */ | |
434 | if (output_bfd) | |
435 | { | |
436 | reloc_entry->address += input_section->output_offset; | |
437 | return bfd_reloc_ok; | |
438 | } | |
439 | ||
440 | high_address = bfd_get_section_limit (abfd, input_section); | |
441 | if (reloc_entry->address > high_address | |
442 | || reloc_entry->address + reloc_entry->addend > high_address) | |
443 | return bfd_reloc_outofrange; | |
444 | ||
445 | /* The gp used in the portion of the output object to which this | |
446 | input object belongs is cached on the input bfd. */ | |
447 | gp = _bfd_get_gp_value (abfd); | |
448 | ||
449 | relocation = (input_section->output_section->vma | |
450 | + input_section->output_offset | |
451 | + reloc_entry->address); | |
452 | ||
453 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
454 | p_lda = p_ldah + reloc_entry->addend; | |
455 | ||
456 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
457 | ||
458 | /* Complain if the instructions are not correct. */ | |
459 | if (ret == bfd_reloc_dangerous) | |
460 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
461 | ||
462 | return ret; | |
463 | } | |
464 | ||
252b5132 RH |
465 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
466 | from smaller values. Start with zero, widen, *then* decrement. */ | |
467 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
468 | ||
21d799b5 | 469 | |
dfe57ca0 | 470 | #define SKIP_HOWTO(N) \ |
21d799b5 | 471 | HOWTO(N, 0, 0, 0, 0, 0, complain_overflow_dont, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) |
dfe57ca0 | 472 | |
252b5132 RH |
473 | static reloc_howto_type elf64_alpha_howto_table[] = |
474 | { | |
475 | HOWTO (R_ALPHA_NONE, /* type */ | |
476 | 0, /* rightshift */ | |
477 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 8, /* bitsize */ | |
b34976b6 | 479 | TRUE, /* pc_relative */ |
252b5132 RH |
480 | 0, /* bitpos */ |
481 | complain_overflow_dont, /* complain_on_overflow */ | |
482 | elf64_alpha_reloc_nil, /* special_function */ | |
483 | "NONE", /* name */ | |
b34976b6 | 484 | FALSE, /* partial_inplace */ |
252b5132 RH |
485 | 0, /* src_mask */ |
486 | 0, /* dst_mask */ | |
b34976b6 | 487 | TRUE), /* pcrel_offset */ |
252b5132 RH |
488 | |
489 | /* A 32 bit reference to a symbol. */ | |
490 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
491 | 0, /* rightshift */ | |
492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
493 | 32, /* bitsize */ | |
b34976b6 | 494 | FALSE, /* pc_relative */ |
252b5132 RH |
495 | 0, /* bitpos */ |
496 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 497 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 498 | "REFLONG", /* name */ |
b34976b6 | 499 | FALSE, /* partial_inplace */ |
252b5132 RH |
500 | 0xffffffff, /* src_mask */ |
501 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 502 | FALSE), /* pcrel_offset */ |
252b5132 RH |
503 | |
504 | /* A 64 bit reference to a symbol. */ | |
505 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
506 | 0, /* rightshift */ | |
507 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
508 | 64, /* bitsize */ | |
b34976b6 | 509 | FALSE, /* pc_relative */ |
252b5132 RH |
510 | 0, /* bitpos */ |
511 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 512 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 513 | "REFQUAD", /* name */ |
b34976b6 | 514 | FALSE, /* partial_inplace */ |
252b5132 RH |
515 | MINUS_ONE, /* src_mask */ |
516 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 517 | FALSE), /* pcrel_offset */ |
252b5132 RH |
518 | |
519 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
520 | that when the value is used the value of the gp register will be | |
521 | added in. */ | |
522 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
523 | 0, /* rightshift */ | |
524 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
525 | 32, /* bitsize */ | |
b34976b6 | 526 | FALSE, /* pc_relative */ |
252b5132 RH |
527 | 0, /* bitpos */ |
528 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 529 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 530 | "GPREL32", /* name */ |
b34976b6 | 531 | FALSE, /* partial_inplace */ |
252b5132 RH |
532 | 0xffffffff, /* src_mask */ |
533 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 534 | FALSE), /* pcrel_offset */ |
252b5132 RH |
535 | |
536 | /* Used for an instruction that refers to memory off the GP register. */ | |
537 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
538 | 0, /* rightshift */ | |
dfe57ca0 | 539 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 540 | 16, /* bitsize */ |
b34976b6 | 541 | FALSE, /* pc_relative */ |
252b5132 RH |
542 | 0, /* bitpos */ |
543 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 544 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 545 | "ELF_LITERAL", /* name */ |
b34976b6 | 546 | FALSE, /* partial_inplace */ |
252b5132 RH |
547 | 0xffff, /* src_mask */ |
548 | 0xffff, /* dst_mask */ | |
b34976b6 | 549 | FALSE), /* pcrel_offset */ |
252b5132 RH |
550 | |
551 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
552 | It identifies a use of the literal. The symbol index is special: | |
553 | 1 means the literal address is in the base register of a memory | |
554 | format instruction; 2 means the literal address is in the byte | |
555 | offset register of a byte-manipulation instruction; 3 means the | |
556 | literal address is in the target register of a jsr instruction. | |
557 | This does not actually do any relocation. */ | |
558 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
559 | 0, /* rightshift */ | |
dfe57ca0 | 560 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 561 | 32, /* bitsize */ |
b34976b6 | 562 | FALSE, /* pc_relative */ |
252b5132 RH |
563 | 0, /* bitpos */ |
564 | complain_overflow_dont, /* complain_on_overflow */ | |
565 | elf64_alpha_reloc_nil, /* special_function */ | |
566 | "LITUSE", /* name */ | |
b34976b6 | 567 | FALSE, /* partial_inplace */ |
252b5132 RH |
568 | 0, /* src_mask */ |
569 | 0, /* dst_mask */ | |
b34976b6 | 570 | FALSE), /* pcrel_offset */ |
252b5132 RH |
571 | |
572 | /* Load the gp register. This is always used for a ldah instruction | |
573 | which loads the upper 16 bits of the gp register. The symbol | |
574 | index of the GPDISP instruction is an offset in bytes to the lda | |
575 | instruction that loads the lower 16 bits. The value to use for | |
576 | the relocation is the difference between the GP value and the | |
577 | current location; the load will always be done against a register | |
578 | holding the current address. | |
579 | ||
580 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
581 | any offset is present in the instructions, it is an offset from | |
582 | the register to the ldah instruction. This lets us avoid any | |
583 | stupid hackery like inventing a gp value to do partial relocation | |
584 | against. Also unlike ECOFF, we do the whole relocation off of | |
585 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
586 | space consuming bit, that, since all the information was present | |
587 | in the GPDISP_HI16 reloc. */ | |
588 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
589 | 16, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 16, /* bitsize */ | |
b34976b6 | 592 | FALSE, /* pc_relative */ |
252b5132 RH |
593 | 0, /* bitpos */ |
594 | complain_overflow_dont, /* complain_on_overflow */ | |
595 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
596 | "GPDISP", /* name */ | |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
252b5132 RH |
598 | 0xffff, /* src_mask */ |
599 | 0xffff, /* dst_mask */ | |
b34976b6 | 600 | TRUE), /* pcrel_offset */ |
252b5132 RH |
601 | |
602 | /* A 21 bit branch. */ | |
603 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
604 | 2, /* rightshift */ | |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 21, /* bitsize */ | |
b34976b6 | 607 | TRUE, /* pc_relative */ |
252b5132 RH |
608 | 0, /* bitpos */ |
609 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 610 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 611 | "BRADDR", /* name */ |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
252b5132 RH |
613 | 0x1fffff, /* src_mask */ |
614 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 615 | TRUE), /* pcrel_offset */ |
252b5132 RH |
616 | |
617 | /* A hint for a jump to a register. */ | |
618 | HOWTO (R_ALPHA_HINT, /* type */ | |
619 | 2, /* rightshift */ | |
dfe57ca0 | 620 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 621 | 14, /* bitsize */ |
b34976b6 | 622 | TRUE, /* pc_relative */ |
252b5132 RH |
623 | 0, /* bitpos */ |
624 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 625 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 626 | "HINT", /* name */ |
b34976b6 | 627 | FALSE, /* partial_inplace */ |
252b5132 RH |
628 | 0x3fff, /* src_mask */ |
629 | 0x3fff, /* dst_mask */ | |
b34976b6 | 630 | TRUE), /* pcrel_offset */ |
252b5132 RH |
631 | |
632 | /* 16 bit PC relative offset. */ | |
633 | HOWTO (R_ALPHA_SREL16, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 16, /* bitsize */ | |
b34976b6 | 637 | TRUE, /* pc_relative */ |
252b5132 RH |
638 | 0, /* bitpos */ |
639 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 640 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 641 | "SREL16", /* name */ |
b34976b6 | 642 | FALSE, /* partial_inplace */ |
252b5132 RH |
643 | 0xffff, /* src_mask */ |
644 | 0xffff, /* dst_mask */ | |
b34976b6 | 645 | TRUE), /* pcrel_offset */ |
252b5132 RH |
646 | |
647 | /* 32 bit PC relative offset. */ | |
648 | HOWTO (R_ALPHA_SREL32, /* type */ | |
649 | 0, /* rightshift */ | |
650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 32, /* bitsize */ | |
b34976b6 | 652 | TRUE, /* pc_relative */ |
252b5132 RH |
653 | 0, /* bitpos */ |
654 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 655 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 656 | "SREL32", /* name */ |
b34976b6 | 657 | FALSE, /* partial_inplace */ |
252b5132 RH |
658 | 0xffffffff, /* src_mask */ |
659 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 660 | TRUE), /* pcrel_offset */ |
252b5132 RH |
661 | |
662 | /* A 64 bit PC relative offset. */ | |
663 | HOWTO (R_ALPHA_SREL64, /* type */ | |
664 | 0, /* rightshift */ | |
665 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 64, /* bitsize */ | |
b34976b6 | 667 | TRUE, /* pc_relative */ |
252b5132 RH |
668 | 0, /* bitpos */ |
669 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 670 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 671 | "SREL64", /* name */ |
b34976b6 | 672 | FALSE, /* partial_inplace */ |
252b5132 RH |
673 | MINUS_ONE, /* src_mask */ |
674 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 675 | TRUE), /* pcrel_offset */ |
252b5132 | 676 | |
dfe57ca0 RH |
677 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
678 | SKIP_HOWTO (12), | |
679 | SKIP_HOWTO (13), | |
680 | SKIP_HOWTO (14), | |
681 | SKIP_HOWTO (15), | |
682 | SKIP_HOWTO (16), | |
252b5132 RH |
683 | |
684 | /* The high 16 bits of the displacement from GP to the target. */ | |
685 | HOWTO (R_ALPHA_GPRELHIGH, | |
686 | 0, /* rightshift */ | |
dfe57ca0 | 687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 688 | 16, /* bitsize */ |
b34976b6 | 689 | FALSE, /* pc_relative */ |
252b5132 RH |
690 | 0, /* bitpos */ |
691 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 692 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 693 | "GPRELHIGH", /* name */ |
b34976b6 | 694 | FALSE, /* partial_inplace */ |
252b5132 RH |
695 | 0xffff, /* src_mask */ |
696 | 0xffff, /* dst_mask */ | |
b34976b6 | 697 | FALSE), /* pcrel_offset */ |
252b5132 RH |
698 | |
699 | /* The low 16 bits of the displacement from GP to the target. */ | |
700 | HOWTO (R_ALPHA_GPRELLOW, | |
701 | 0, /* rightshift */ | |
dfe57ca0 | 702 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 703 | 16, /* bitsize */ |
b34976b6 | 704 | FALSE, /* pc_relative */ |
252b5132 RH |
705 | 0, /* bitpos */ |
706 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 707 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 708 | "GPRELLOW", /* name */ |
b34976b6 | 709 | FALSE, /* partial_inplace */ |
252b5132 RH |
710 | 0xffff, /* src_mask */ |
711 | 0xffff, /* dst_mask */ | |
b34976b6 | 712 | FALSE), /* pcrel_offset */ |
252b5132 RH |
713 | |
714 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 715 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 716 | 0, /* rightshift */ |
dfe57ca0 | 717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 718 | 16, /* bitsize */ |
b34976b6 | 719 | FALSE, /* pc_relative */ |
252b5132 RH |
720 | 0, /* bitpos */ |
721 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 722 | bfd_elf_generic_reloc, /* special_function */ |
dfe57ca0 | 723 | "GPREL16", /* name */ |
b34976b6 | 724 | FALSE, /* partial_inplace */ |
252b5132 RH |
725 | 0xffff, /* src_mask */ |
726 | 0xffff, /* dst_mask */ | |
b34976b6 | 727 | FALSE), /* pcrel_offset */ |
252b5132 | 728 | |
dfe57ca0 RH |
729 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
730 | SKIP_HOWTO (20), | |
731 | SKIP_HOWTO (21), | |
732 | SKIP_HOWTO (22), | |
733 | SKIP_HOWTO (23), | |
252b5132 | 734 | |
fe8bc63d | 735 | /* Misc ELF relocations. */ |
252b5132 RH |
736 | |
737 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
738 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
739 | is present because every other ELF has one, but should not be used | |
740 | because .dynbss is an ugly thing. */ | |
741 | HOWTO (R_ALPHA_COPY, | |
742 | 0, | |
743 | 0, | |
744 | 0, | |
b34976b6 | 745 | FALSE, |
252b5132 RH |
746 | 0, |
747 | complain_overflow_dont, | |
748 | bfd_elf_generic_reloc, | |
749 | "COPY", | |
b34976b6 | 750 | FALSE, |
252b5132 RH |
751 | 0, |
752 | 0, | |
b34976b6 | 753 | TRUE), |
252b5132 RH |
754 | |
755 | /* A dynamic relocation for a .got entry. */ | |
756 | HOWTO (R_ALPHA_GLOB_DAT, | |
757 | 0, | |
758 | 0, | |
759 | 0, | |
b34976b6 | 760 | FALSE, |
252b5132 RH |
761 | 0, |
762 | complain_overflow_dont, | |
763 | bfd_elf_generic_reloc, | |
764 | "GLOB_DAT", | |
b34976b6 | 765 | FALSE, |
252b5132 RH |
766 | 0, |
767 | 0, | |
b34976b6 | 768 | TRUE), |
252b5132 RH |
769 | |
770 | /* A dynamic relocation for a .plt entry. */ | |
771 | HOWTO (R_ALPHA_JMP_SLOT, | |
772 | 0, | |
773 | 0, | |
774 | 0, | |
b34976b6 | 775 | FALSE, |
252b5132 RH |
776 | 0, |
777 | complain_overflow_dont, | |
778 | bfd_elf_generic_reloc, | |
779 | "JMP_SLOT", | |
b34976b6 | 780 | FALSE, |
252b5132 RH |
781 | 0, |
782 | 0, | |
b34976b6 | 783 | TRUE), |
252b5132 RH |
784 | |
785 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
786 | HOWTO (R_ALPHA_RELATIVE, | |
787 | 0, | |
788 | 0, | |
789 | 0, | |
b34976b6 | 790 | FALSE, |
252b5132 RH |
791 | 0, |
792 | complain_overflow_dont, | |
793 | bfd_elf_generic_reloc, | |
794 | "RELATIVE", | |
b34976b6 | 795 | FALSE, |
252b5132 RH |
796 | 0, |
797 | 0, | |
b34976b6 | 798 | TRUE), |
7793f4d0 RH |
799 | |
800 | /* A 21 bit branch that adjusts for gp loads. */ | |
801 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
802 | 2, /* rightshift */ | |
803 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
804 | 21, /* bitsize */ | |
b34976b6 | 805 | TRUE, /* pc_relative */ |
7793f4d0 RH |
806 | 0, /* bitpos */ |
807 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 808 | bfd_elf_generic_reloc, /* special_function */ |
7793f4d0 | 809 | "BRSGP", /* name */ |
b34976b6 | 810 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
811 | 0x1fffff, /* src_mask */ |
812 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 813 | TRUE), /* pcrel_offset */ |
3765b1be RH |
814 | |
815 | /* Creates a tls_index for the symbol in the got. */ | |
816 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
817 | 0, /* rightshift */ | |
818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
819 | 16, /* bitsize */ | |
b34976b6 | 820 | FALSE, /* pc_relative */ |
3765b1be RH |
821 | 0, /* bitpos */ |
822 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 823 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 824 | "TLSGD", /* name */ |
b34976b6 | 825 | FALSE, /* partial_inplace */ |
3765b1be RH |
826 | 0xffff, /* src_mask */ |
827 | 0xffff, /* dst_mask */ | |
b34976b6 | 828 | FALSE), /* pcrel_offset */ |
3765b1be RH |
829 | |
830 | /* Creates a tls_index for the (current) module in the got. */ | |
831 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
832 | 0, /* rightshift */ | |
833 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
834 | 16, /* bitsize */ | |
b34976b6 | 835 | FALSE, /* pc_relative */ |
3765b1be RH |
836 | 0, /* bitpos */ |
837 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 838 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 839 | "TLSLDM", /* name */ |
b34976b6 | 840 | FALSE, /* partial_inplace */ |
3765b1be RH |
841 | 0xffff, /* src_mask */ |
842 | 0xffff, /* dst_mask */ | |
b34976b6 | 843 | FALSE), /* pcrel_offset */ |
3765b1be RH |
844 | |
845 | /* A dynamic relocation for a DTP module entry. */ | |
846 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
847 | 0, /* rightshift */ | |
848 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
849 | 64, /* bitsize */ | |
b34976b6 | 850 | FALSE, /* pc_relative */ |
3765b1be RH |
851 | 0, /* bitpos */ |
852 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 853 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 854 | "DTPMOD64", /* name */ |
b34976b6 | 855 | FALSE, /* partial_inplace */ |
3765b1be RH |
856 | MINUS_ONE, /* src_mask */ |
857 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 858 | FALSE), /* pcrel_offset */ |
3765b1be RH |
859 | |
860 | /* Creates a 64-bit offset in the got for the displacement | |
861 | from DTP to the target. */ | |
862 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
863 | 0, /* rightshift */ | |
864 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
865 | 16, /* bitsize */ | |
b34976b6 | 866 | FALSE, /* pc_relative */ |
3765b1be RH |
867 | 0, /* bitpos */ |
868 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 869 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 870 | "GOTDTPREL", /* name */ |
b34976b6 | 871 | FALSE, /* partial_inplace */ |
3765b1be RH |
872 | 0xffff, /* src_mask */ |
873 | 0xffff, /* dst_mask */ | |
b34976b6 | 874 | FALSE), /* pcrel_offset */ |
3765b1be RH |
875 | |
876 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
877 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
878 | 0, /* rightshift */ | |
879 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
880 | 64, /* bitsize */ | |
b34976b6 | 881 | FALSE, /* pc_relative */ |
3765b1be RH |
882 | 0, /* bitpos */ |
883 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 884 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 885 | "DTPREL64", /* name */ |
b34976b6 | 886 | FALSE, /* partial_inplace */ |
3765b1be RH |
887 | MINUS_ONE, /* src_mask */ |
888 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 889 | FALSE), /* pcrel_offset */ |
3765b1be RH |
890 | |
891 | /* The high 16 bits of the displacement from DTP to the target. */ | |
892 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
893 | 0, /* rightshift */ | |
894 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
895 | 16, /* bitsize */ | |
b34976b6 | 896 | FALSE, /* pc_relative */ |
3765b1be RH |
897 | 0, /* bitpos */ |
898 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 899 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 900 | "DTPRELHI", /* name */ |
b34976b6 | 901 | FALSE, /* partial_inplace */ |
3765b1be RH |
902 | 0xffff, /* src_mask */ |
903 | 0xffff, /* dst_mask */ | |
b34976b6 | 904 | FALSE), /* pcrel_offset */ |
3765b1be RH |
905 | |
906 | /* The low 16 bits of the displacement from DTP to the target. */ | |
907 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
910 | 16, /* bitsize */ | |
b34976b6 | 911 | FALSE, /* pc_relative */ |
3765b1be RH |
912 | 0, /* bitpos */ |
913 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 914 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 915 | "DTPRELLO", /* name */ |
b34976b6 | 916 | FALSE, /* partial_inplace */ |
3765b1be RH |
917 | 0xffff, /* src_mask */ |
918 | 0xffff, /* dst_mask */ | |
b34976b6 | 919 | FALSE), /* pcrel_offset */ |
3765b1be RH |
920 | |
921 | /* A 16-bit displacement from DTP to the target. */ | |
922 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
923 | 0, /* rightshift */ | |
924 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
925 | 16, /* bitsize */ | |
b34976b6 | 926 | FALSE, /* pc_relative */ |
3765b1be RH |
927 | 0, /* bitpos */ |
928 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 929 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 930 | "DTPREL16", /* name */ |
b34976b6 | 931 | FALSE, /* partial_inplace */ |
3765b1be RH |
932 | 0xffff, /* src_mask */ |
933 | 0xffff, /* dst_mask */ | |
b34976b6 | 934 | FALSE), /* pcrel_offset */ |
3765b1be RH |
935 | |
936 | /* Creates a 64-bit offset in the got for the displacement | |
937 | from TP to the target. */ | |
938 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
939 | 0, /* rightshift */ | |
940 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
941 | 16, /* bitsize */ | |
b34976b6 | 942 | FALSE, /* pc_relative */ |
3765b1be RH |
943 | 0, /* bitpos */ |
944 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 945 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 946 | "GOTTPREL", /* name */ |
b34976b6 | 947 | FALSE, /* partial_inplace */ |
3765b1be RH |
948 | 0xffff, /* src_mask */ |
949 | 0xffff, /* dst_mask */ | |
b34976b6 | 950 | FALSE), /* pcrel_offset */ |
3765b1be RH |
951 | |
952 | /* A dynamic relocation for a displacement from TP to the target. */ | |
953 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
954 | 0, /* rightshift */ | |
955 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
956 | 64, /* bitsize */ | |
b34976b6 | 957 | FALSE, /* pc_relative */ |
3765b1be RH |
958 | 0, /* bitpos */ |
959 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 960 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 961 | "TPREL64", /* name */ |
b34976b6 | 962 | FALSE, /* partial_inplace */ |
3765b1be RH |
963 | MINUS_ONE, /* src_mask */ |
964 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 965 | FALSE), /* pcrel_offset */ |
3765b1be RH |
966 | |
967 | /* The high 16 bits of the displacement from TP to the target. */ | |
968 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
969 | 0, /* rightshift */ | |
970 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
971 | 16, /* bitsize */ | |
b34976b6 | 972 | FALSE, /* pc_relative */ |
3765b1be RH |
973 | 0, /* bitpos */ |
974 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 975 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 976 | "TPRELHI", /* name */ |
b34976b6 | 977 | FALSE, /* partial_inplace */ |
3765b1be RH |
978 | 0xffff, /* src_mask */ |
979 | 0xffff, /* dst_mask */ | |
b34976b6 | 980 | FALSE), /* pcrel_offset */ |
3765b1be RH |
981 | |
982 | /* The low 16 bits of the displacement from TP to the target. */ | |
983 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
984 | 0, /* rightshift */ | |
985 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
986 | 16, /* bitsize */ | |
b34976b6 | 987 | FALSE, /* pc_relative */ |
3765b1be RH |
988 | 0, /* bitpos */ |
989 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 990 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 991 | "TPRELLO", /* name */ |
b34976b6 | 992 | FALSE, /* partial_inplace */ |
3765b1be RH |
993 | 0xffff, /* src_mask */ |
994 | 0xffff, /* dst_mask */ | |
b34976b6 | 995 | FALSE), /* pcrel_offset */ |
3765b1be RH |
996 | |
997 | /* A 16-bit displacement from TP to the target. */ | |
998 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
999 | 0, /* rightshift */ | |
1000 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1001 | 16, /* bitsize */ | |
b34976b6 | 1002 | FALSE, /* pc_relative */ |
3765b1be RH |
1003 | 0, /* bitpos */ |
1004 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 1005 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 1006 | "TPREL16", /* name */ |
b34976b6 | 1007 | FALSE, /* partial_inplace */ |
3765b1be RH |
1008 | 0xffff, /* src_mask */ |
1009 | 0xffff, /* dst_mask */ | |
b34976b6 | 1010 | FALSE), /* pcrel_offset */ |
252b5132 RH |
1011 | }; |
1012 | ||
252b5132 RH |
1013 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
1014 | ||
1015 | struct elf_reloc_map | |
1016 | { | |
1017 | bfd_reloc_code_real_type bfd_reloc_val; | |
1018 | int elf_reloc_val; | |
1019 | }; | |
1020 | ||
1021 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1022 | { | |
dfe57ca0 RH |
1023 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1024 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1025 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1026 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1027 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1028 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1029 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1030 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1031 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1032 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1033 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1034 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1035 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1036 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1037 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1038 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1039 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1040 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1041 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1042 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1043 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1044 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1045 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1046 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1047 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1048 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1049 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1050 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1051 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1052 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1053 | }; |
1054 | ||
1055 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1056 | ||
1057 | static reloc_howto_type * | |
a7519a3c RH |
1058 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1059 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1060 | { |
1061 | const struct elf_reloc_map *i, *e; | |
1062 | i = e = elf64_alpha_reloc_map; | |
1063 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1064 | for (; i != e; ++i) | |
1065 | { | |
1066 | if (i->bfd_reloc_val == code) | |
1067 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1068 | } | |
1069 | return 0; | |
1070 | } | |
1071 | ||
157090f7 AM |
1072 | static reloc_howto_type * |
1073 | elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1074 | const char *r_name) | |
1075 | { | |
1076 | unsigned int i; | |
1077 | ||
1078 | for (i = 0; | |
1079 | i < (sizeof (elf64_alpha_howto_table) | |
1080 | / sizeof (elf64_alpha_howto_table[0])); | |
1081 | i++) | |
1082 | if (elf64_alpha_howto_table[i].name != NULL | |
1083 | && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0) | |
1084 | return &elf64_alpha_howto_table[i]; | |
1085 | ||
1086 | return NULL; | |
1087 | } | |
1088 | ||
252b5132 RH |
1089 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ |
1090 | ||
1091 | static void | |
a7519a3c RH |
1092 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1093 | Elf_Internal_Rela *dst) | |
252b5132 | 1094 | { |
a7519a3c | 1095 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1096 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1097 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1098 | } | |
3765b1be RH |
1099 | |
1100 | /* These two relocations create a two-word entry in the got. */ | |
1101 | #define alpha_got_entry_size(r_type) \ | |
1102 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1103 | |
1104 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1105 | #define alpha_get_dtprel_base(info) \ |
1106 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1107 | |
1108 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1109 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1110 | #define alpha_get_tprel_base(info) \ |
1111 | (elf_hash_table (info)->tls_sec->vma \ | |
1112 | - align_power ((bfd_vma) 16, \ | |
1113 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1114 | \f |
a7519a3c RH |
1115 | /* Handle an Alpha specific section when reading an object file. This |
1116 | is called when bfd_section_from_shdr finds a section with an unknown | |
1117 | type. | |
1118 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1119 | how to. */ | |
252b5132 | 1120 | |
a7519a3c RH |
1121 | static bfd_boolean |
1122 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1123 | Elf_Internal_Shdr *hdr, | |
1124 | const char *name, | |
1125 | int shindex) | |
252b5132 | 1126 | { |
a7519a3c RH |
1127 | asection *newsect; |
1128 | ||
1129 | /* There ought to be a place to keep ELF backend specific flags, but | |
1130 | at the moment there isn't one. We just keep track of the | |
1131 | sections by their name, instead. Fortunately, the ABI gives | |
1132 | suggested names for all the MIPS specific sections, so we will | |
1133 | probably get away with this. */ | |
1134 | switch (hdr->sh_type) | |
1135 | { | |
1136 | case SHT_ALPHA_DEBUG: | |
1137 | if (strcmp (name, ".mdebug") != 0) | |
1138 | return FALSE; | |
1139 | break; | |
1140 | default: | |
1141 | return FALSE; | |
1142 | } | |
252b5132 | 1143 | |
a7519a3c RH |
1144 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1145 | return FALSE; | |
1146 | newsect = hdr->bfd_section; | |
252b5132 | 1147 | |
a7519a3c | 1148 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1149 | { |
a7519a3c RH |
1150 | if (! bfd_set_section_flags (abfd, newsect, |
1151 | (bfd_get_section_flags (abfd, newsect) | |
1152 | | SEC_DEBUGGING))) | |
1153 | return FALSE; | |
252b5132 | 1154 | } |
a7519a3c RH |
1155 | |
1156 | return TRUE; | |
252b5132 RH |
1157 | } |
1158 | ||
a7519a3c RH |
1159 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1160 | ||
b34976b6 | 1161 | static bfd_boolean |
a7519a3c | 1162 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1163 | { |
a7519a3c RH |
1164 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1165 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1166 | |
a7519a3c RH |
1167 | return TRUE; |
1168 | } | |
252b5132 | 1169 | |
a7519a3c RH |
1170 | /* Set the correct type for an Alpha ELF section. We do this by the |
1171 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1172 | |
a7519a3c RH |
1173 | static bfd_boolean |
1174 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1175 | { | |
1176 | register const char *name; | |
1177 | ||
1178 | name = bfd_get_section_name (abfd, sec); | |
1179 | ||
1180 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1181 | { |
a7519a3c RH |
1182 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1183 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1184 | entsize of 0. FIXME: Does this matter? */ | |
1185 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1186 | hdr->sh_entsize = 0; | |
1187 | else | |
1188 | hdr->sh_entsize = 1; | |
252b5132 | 1189 | } |
a7519a3c RH |
1190 | else if ((sec->flags & SEC_SMALL_DATA) |
1191 | || strcmp (name, ".sdata") == 0 | |
1192 | || strcmp (name, ".sbss") == 0 | |
1193 | || strcmp (name, ".lit4") == 0 | |
1194 | || strcmp (name, ".lit8") == 0) | |
1195 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1196 | |
a7519a3c RH |
1197 | return TRUE; |
1198 | } | |
252b5132 | 1199 | |
a7519a3c RH |
1200 | /* Hook called by the linker routine which adds symbols from an object |
1201 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1202 | ||
1203 | static bfd_boolean | |
1204 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1205 | Elf_Internal_Sym *sym, | |
1206 | const char **namep ATTRIBUTE_UNUSED, | |
1207 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1208 | asection **secp, bfd_vma *valp) | |
1209 | { | |
1210 | if (sym->st_shndx == SHN_COMMON | |
1211 | && !info->relocatable | |
1212 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1213 | { |
a7519a3c RH |
1214 | /* Common symbols less than or equal to -G nn bytes are |
1215 | automatically put into .sbss. */ | |
ffcb7aff | 1216 | |
a7519a3c | 1217 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1218 | |
a7519a3c | 1219 | if (scomm == NULL) |
252b5132 | 1220 | { |
a7519a3c RH |
1221 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1222 | (SEC_ALLOC | |
1223 | | SEC_IS_COMMON | |
1224 | | SEC_LINKER_CREATED)); | |
1225 | if (scomm == NULL) | |
1226 | return FALSE; | |
1227 | } | |
ffcb7aff | 1228 | |
a7519a3c RH |
1229 | *secp = scomm; |
1230 | *valp = sym->st_size; | |
1231 | } | |
ffcb7aff | 1232 | |
a7519a3c RH |
1233 | return TRUE; |
1234 | } | |
252b5132 | 1235 | |
a7519a3c | 1236 | /* Create the .got section. */ |
252b5132 | 1237 | |
a7519a3c RH |
1238 | static bfd_boolean |
1239 | elf64_alpha_create_got_section (bfd *abfd, | |
1240 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1241 | { | |
85d162e6 | 1242 | flagword flags; |
a7519a3c | 1243 | asection *s; |
252b5132 | 1244 | |
0ffa91dd NC |
1245 | if (! is_alpha_elf (abfd)) |
1246 | return FALSE; | |
1247 | ||
85d162e6 AM |
1248 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1249 | | SEC_LINKER_CREATED); | |
1250 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
a7519a3c RH |
1251 | if (s == NULL |
1252 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1253 | return FALSE; | |
252b5132 | 1254 | |
a7519a3c | 1255 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1256 | |
85d162e6 AM |
1257 | /* Make sure the object's gotobj is set to itself so that we default |
1258 | to every object with its own .got. We'll merge .gots later once | |
1259 | we've collected each object's info. */ | |
1260 | alpha_elf_tdata (abfd)->gotobj = abfd; | |
1261 | ||
a7519a3c RH |
1262 | return TRUE; |
1263 | } | |
252b5132 | 1264 | |
a7519a3c | 1265 | /* Create all the dynamic sections. */ |
252b5132 | 1266 | |
a7519a3c RH |
1267 | static bfd_boolean |
1268 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1269 | { | |
1270 | asection *s; | |
85d162e6 | 1271 | flagword flags; |
a7519a3c | 1272 | struct elf_link_hash_entry *h; |
252b5132 | 1273 | |
0ffa91dd NC |
1274 | if (! is_alpha_elf (abfd)) |
1275 | return FALSE; | |
1276 | ||
a7519a3c | 1277 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1278 | |
85d162e6 AM |
1279 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1280 | | SEC_LINKER_CREATED | |
1281 | | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); | |
1282 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); | |
6ec7057a | 1283 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) |
a7519a3c | 1284 | return FALSE; |
252b5132 | 1285 | |
a7519a3c RH |
1286 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1287 | .plt section. */ | |
7325306f RS |
1288 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
1289 | "_PROCEDURE_LINKAGE_TABLE_"); | |
1290 | elf_hash_table (info)->hplt = h; | |
1291 | if (h == NULL) | |
a7519a3c | 1292 | return FALSE; |
d6ad34f6 | 1293 | |
85d162e6 AM |
1294 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1295 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1296 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); | |
6ec7057a | 1297 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
a7519a3c | 1298 | return FALSE; |
252b5132 | 1299 | |
6ec7057a RH |
1300 | if (elf64_alpha_use_secureplt) |
1301 | { | |
85d162e6 AM |
1302 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
1303 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6ec7057a RH |
1304 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
1305 | return FALSE; | |
1306 | } | |
1307 | ||
a7519a3c RH |
1308 | /* We may or may not have created a .got section for this object, but |
1309 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1310 | |
85d162e6 AM |
1311 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
1312 | { | |
1313 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1314 | return FALSE; | |
1315 | } | |
1cd6895c | 1316 | |
85d162e6 AM |
1317 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1318 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1319 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); | |
a7519a3c RH |
1320 | if (s == NULL |
1321 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1322 | return FALSE; | |
252b5132 | 1323 | |
a7519a3c RH |
1324 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1325 | dynobj's .got section. We don't do this in the linker script | |
1326 | because we don't want to define the symbol if we are not creating | |
1327 | a global offset table. */ | |
d98685ac AM |
1328 | h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, |
1329 | "_GLOBAL_OFFSET_TABLE_"); | |
a7519a3c | 1330 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
1331 | if (h == NULL) |
1332 | return FALSE; | |
252b5132 | 1333 | |
a7519a3c | 1334 | return TRUE; |
252b5132 | 1335 | } |
a7519a3c RH |
1336 | \f |
1337 | /* Read ECOFF debugging information from a .mdebug section into a | |
1338 | ecoff_debug_info structure. */ | |
252b5132 | 1339 | |
a7519a3c RH |
1340 | static bfd_boolean |
1341 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1342 | struct ecoff_debug_info *debug) | |
252b5132 | 1343 | { |
a7519a3c RH |
1344 | HDRR *symhdr; |
1345 | const struct ecoff_debug_swap *swap; | |
1346 | char *ext_hdr = NULL; | |
252b5132 | 1347 | |
a7519a3c RH |
1348 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1349 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1350 | |
a7519a3c RH |
1351 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1352 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1353 | goto error_return; | |
252b5132 | 1354 | |
a7519a3c RH |
1355 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1356 | swap->external_hdr_size)) | |
1357 | goto error_return; | |
252b5132 | 1358 | |
a7519a3c RH |
1359 | symhdr = &debug->symbolic_header; |
1360 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1361 | |
a7519a3c RH |
1362 | /* The symbolic header contains absolute file offsets and sizes to |
1363 | read. */ | |
1364 | #define READ(ptr, offset, count, size, type) \ | |
1365 | if (symhdr->count == 0) \ | |
1366 | debug->ptr = NULL; \ | |
1367 | else \ | |
1368 | { \ | |
1369 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1370 | debug->ptr = (type) bfd_malloc (amt); \ | |
1371 | if (debug->ptr == NULL) \ | |
1372 | goto error_return; \ | |
1373 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1374 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1375 | goto error_return; \ | |
1376 | } | |
fe8bc63d | 1377 | |
a7519a3c RH |
1378 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1379 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1380 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1381 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1382 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1383 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1384 | union aux_ext *); | |
1385 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1386 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1387 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1388 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1389 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1390 | #undef READ | |
252b5132 | 1391 | |
a7519a3c | 1392 | debug->fdr = NULL; |
252b5132 | 1393 | |
a7519a3c | 1394 | return TRUE; |
252b5132 | 1395 | |
a7519a3c RH |
1396 | error_return: |
1397 | if (ext_hdr != NULL) | |
1398 | free (ext_hdr); | |
1399 | if (debug->line != NULL) | |
1400 | free (debug->line); | |
1401 | if (debug->external_dnr != NULL) | |
1402 | free (debug->external_dnr); | |
1403 | if (debug->external_pdr != NULL) | |
1404 | free (debug->external_pdr); | |
1405 | if (debug->external_sym != NULL) | |
1406 | free (debug->external_sym); | |
1407 | if (debug->external_opt != NULL) | |
1408 | free (debug->external_opt); | |
1409 | if (debug->external_aux != NULL) | |
1410 | free (debug->external_aux); | |
1411 | if (debug->ss != NULL) | |
1412 | free (debug->ss); | |
1413 | if (debug->ssext != NULL) | |
1414 | free (debug->ssext); | |
1415 | if (debug->external_fdr != NULL) | |
1416 | free (debug->external_fdr); | |
1417 | if (debug->external_rfd != NULL) | |
1418 | free (debug->external_rfd); | |
1419 | if (debug->external_ext != NULL) | |
1420 | free (debug->external_ext); | |
1421 | return FALSE; | |
252b5132 RH |
1422 | } |
1423 | ||
a7519a3c RH |
1424 | /* Alpha ELF local labels start with '$'. */ |
1425 | ||
b34976b6 | 1426 | static bfd_boolean |
a7519a3c | 1427 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1428 | { |
a7519a3c RH |
1429 | return name[0] == '$'; |
1430 | } | |
9e756d64 | 1431 | |
a7519a3c RH |
1432 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1433 | routine in order to handle the ECOFF debugging information. We | |
1434 | still call this mips_elf_find_line because of the slot | |
1435 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1436 | |
a7519a3c RH |
1437 | struct mips_elf_find_line |
1438 | { | |
1439 | struct ecoff_debug_info d; | |
1440 | struct ecoff_find_line i; | |
1441 | }; | |
d6ad34f6 | 1442 | |
a7519a3c RH |
1443 | static bfd_boolean |
1444 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1445 | bfd_vma offset, const char **filename_ptr, | |
1446 | const char **functionname_ptr, | |
1447 | unsigned int *line_ptr) | |
1448 | { | |
1449 | asection *msec; | |
252b5132 | 1450 | |
a7519a3c RH |
1451 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1452 | filename_ptr, functionname_ptr, | |
1453 | line_ptr, 0, | |
1454 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1455 | return TRUE; |
9e756d64 | 1456 | |
a7519a3c RH |
1457 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1458 | if (msec != NULL) | |
1bbc9cec | 1459 | { |
a7519a3c RH |
1460 | flagword origflags; |
1461 | struct mips_elf_find_line *fi; | |
1462 | const struct ecoff_debug_swap * const swap = | |
1463 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1464 | |
a7519a3c RH |
1465 | /* If we are called during a link, alpha_elf_final_link may have |
1466 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1467 | if appropriate (which it normally will be). */ | |
1468 | origflags = msec->flags; | |
1469 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1470 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1471 | |
a7519a3c RH |
1472 | fi = elf_tdata (abfd)->find_line_info; |
1473 | if (fi == NULL) | |
1474 | { | |
1475 | bfd_size_type external_fdr_size; | |
1476 | char *fraw_src; | |
1477 | char *fraw_end; | |
1478 | struct fdr *fdr_ptr; | |
1479 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1480 | |
a7519a3c RH |
1481 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1482 | if (fi == NULL) | |
1483 | { | |
1484 | msec->flags = origflags; | |
1485 | return FALSE; | |
1486 | } | |
9e756d64 | 1487 | |
a7519a3c RH |
1488 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1489 | { | |
1490 | msec->flags = origflags; | |
1491 | return FALSE; | |
1492 | } | |
9e756d64 | 1493 | |
a7519a3c RH |
1494 | /* Swap in the FDR information. */ |
1495 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1496 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1497 | if (fi->d.fdr == NULL) | |
1498 | { | |
1499 | msec->flags = origflags; | |
1500 | return FALSE; | |
1501 | } | |
1502 | external_fdr_size = swap->external_fdr_size; | |
1503 | fdr_ptr = fi->d.fdr; | |
1504 | fraw_src = (char *) fi->d.external_fdr; | |
1505 | fraw_end = (fraw_src | |
1506 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1507 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1508 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1509 | |
a7519a3c | 1510 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1511 | |
a7519a3c RH |
1512 | /* Note that we don't bother to ever free this information. |
1513 | find_nearest_line is either called all the time, as in | |
1514 | objdump -l, so the information should be saved, or it is | |
1515 | rarely called, as in ld error messages, so the memory | |
1516 | wasted is unimportant. Still, it would probably be a | |
1517 | good idea for free_cached_info to throw it away. */ | |
1518 | } | |
9e756d64 | 1519 | |
a7519a3c RH |
1520 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1521 | &fi->i, filename_ptr, functionname_ptr, | |
1522 | line_ptr)) | |
1523 | { | |
1524 | msec->flags = origflags; | |
1525 | return TRUE; | |
1526 | } | |
9e756d64 | 1527 | |
a7519a3c | 1528 | msec->flags = origflags; |
9e756d64 | 1529 | } |
9e756d64 | 1530 | |
a7519a3c | 1531 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1532 | |
a7519a3c RH |
1533 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1534 | filename_ptr, functionname_ptr, | |
1535 | line_ptr); | |
9e756d64 | 1536 | } |
a7519a3c RH |
1537 | \f |
1538 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1539 | |
a7519a3c | 1540 | struct extsym_info |
9e756d64 | 1541 | { |
a7519a3c RH |
1542 | bfd *abfd; |
1543 | struct bfd_link_info *info; | |
1544 | struct ecoff_debug_info *debug; | |
1545 | const struct ecoff_debug_swap *swap; | |
1546 | bfd_boolean failed; | |
1547 | }; | |
9e756d64 | 1548 | |
a7519a3c RH |
1549 | static bfd_boolean |
1550 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1551 | { | |
1552 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1553 | bfd_boolean strip; | |
1554 | asection *sec, *output_section; | |
9e756d64 | 1555 | |
a7519a3c RH |
1556 | if (h->root.root.type == bfd_link_hash_warning) |
1557 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1558 | |
a7519a3c RH |
1559 | if (h->root.indx == -2) |
1560 | strip = FALSE; | |
1561 | else if ((h->root.def_dynamic | |
1562 | || h->root.ref_dynamic | |
1563 | || h->root.root.type == bfd_link_hash_new) | |
1564 | && !h->root.def_regular | |
1565 | && !h->root.ref_regular) | |
1566 | strip = TRUE; | |
1567 | else if (einfo->info->strip == strip_all | |
1568 | || (einfo->info->strip == strip_some | |
1569 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1570 | h->root.root.root.string, | |
1571 | FALSE, FALSE) == NULL)) | |
1572 | strip = TRUE; | |
1573 | else | |
1574 | strip = FALSE; | |
9e756d64 | 1575 | |
a7519a3c | 1576 | if (strip) |
b34976b6 | 1577 | return TRUE; |
9e756d64 | 1578 | |
a7519a3c | 1579 | if (h->esym.ifd == -2) |
9e756d64 | 1580 | { |
a7519a3c RH |
1581 | h->esym.jmptbl = 0; |
1582 | h->esym.cobol_main = 0; | |
1583 | h->esym.weakext = 0; | |
1584 | h->esym.reserved = 0; | |
1585 | h->esym.ifd = ifdNil; | |
1586 | h->esym.asym.value = 0; | |
1587 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1588 | |
a7519a3c RH |
1589 | if (h->root.root.type != bfd_link_hash_defined |
1590 | && h->root.root.type != bfd_link_hash_defweak) | |
1591 | h->esym.asym.sc = scAbs; | |
1592 | else | |
1593 | { | |
1594 | const char *name; | |
9e756d64 | 1595 | |
a7519a3c RH |
1596 | sec = h->root.root.u.def.section; |
1597 | output_section = sec->output_section; | |
9e756d64 | 1598 | |
a7519a3c RH |
1599 | /* When making a shared library and symbol h is the one from |
1600 | the another shared library, OUTPUT_SECTION may be null. */ | |
1601 | if (output_section == NULL) | |
1602 | h->esym.asym.sc = scUndefined; | |
1603 | else | |
1604 | { | |
1605 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1606 | |
a7519a3c RH |
1607 | if (strcmp (name, ".text") == 0) |
1608 | h->esym.asym.sc = scText; | |
1609 | else if (strcmp (name, ".data") == 0) | |
1610 | h->esym.asym.sc = scData; | |
1611 | else if (strcmp (name, ".sdata") == 0) | |
1612 | h->esym.asym.sc = scSData; | |
1613 | else if (strcmp (name, ".rodata") == 0 | |
1614 | || strcmp (name, ".rdata") == 0) | |
1615 | h->esym.asym.sc = scRData; | |
1616 | else if (strcmp (name, ".bss") == 0) | |
1617 | h->esym.asym.sc = scBss; | |
1618 | else if (strcmp (name, ".sbss") == 0) | |
1619 | h->esym.asym.sc = scSBss; | |
1620 | else if (strcmp (name, ".init") == 0) | |
1621 | h->esym.asym.sc = scInit; | |
1622 | else if (strcmp (name, ".fini") == 0) | |
1623 | h->esym.asym.sc = scFini; | |
1624 | else | |
1625 | h->esym.asym.sc = scAbs; | |
1626 | } | |
1627 | } | |
9e756d64 | 1628 | |
a7519a3c RH |
1629 | h->esym.asym.reserved = 0; |
1630 | h->esym.asym.index = indexNil; | |
1631 | } | |
9e756d64 | 1632 | |
a7519a3c RH |
1633 | if (h->root.root.type == bfd_link_hash_common) |
1634 | h->esym.asym.value = h->root.root.u.c.size; | |
1635 | else if (h->root.root.type == bfd_link_hash_defined | |
1636 | || h->root.root.type == bfd_link_hash_defweak) | |
1637 | { | |
1638 | if (h->esym.asym.sc == scCommon) | |
1639 | h->esym.asym.sc = scBss; | |
1640 | else if (h->esym.asym.sc == scSCommon) | |
1641 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1642 | |
a7519a3c RH |
1643 | sec = h->root.root.u.def.section; |
1644 | output_section = sec->output_section; | |
1645 | if (output_section != NULL) | |
1646 | h->esym.asym.value = (h->root.root.u.def.value | |
1647 | + sec->output_offset | |
1648 | + output_section->vma); | |
1649 | else | |
1650 | h->esym.asym.value = 0; | |
1651 | } | |
9e756d64 | 1652 | |
a7519a3c RH |
1653 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1654 | h->root.root.root.string, | |
1655 | &h->esym)) | |
1656 | { | |
1657 | einfo->failed = TRUE; | |
1658 | return FALSE; | |
9e756d64 RH |
1659 | } |
1660 | ||
a7519a3c RH |
1661 | return TRUE; |
1662 | } | |
1663 | \f | |
1664 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1665 | |
a7519a3c RH |
1666 | static struct alpha_elf_got_entry * |
1667 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1668 | unsigned long r_type, unsigned long r_symndx, | |
1669 | bfd_vma r_addend) | |
1670 | { | |
1671 | struct alpha_elf_got_entry *gotent; | |
1672 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1673 | |
a7519a3c RH |
1674 | if (h) |
1675 | slot = &h->got_entries; | |
1676 | else | |
1677 | { | |
1678 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1679 | |
a7519a3c | 1680 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1681 | |
a7519a3c RH |
1682 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1683 | if (!local_got_entries) | |
1684 | { | |
1685 | bfd_size_type size; | |
1686 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1687 | |
a7519a3c RH |
1688 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1689 | size = symtab_hdr->sh_info; | |
1690 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1691 | |
a7519a3c RH |
1692 | local_got_entries |
1693 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1694 | if (!local_got_entries) | |
1695 | return NULL; | |
1696 | ||
1697 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1698 | } | |
1699 | ||
1700 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1701 | } |
1702 | ||
a7519a3c RH |
1703 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1704 | if (gotent->gotobj == abfd | |
1705 | && gotent->reloc_type == r_type | |
1706 | && gotent->addend == r_addend) | |
1707 | break; | |
1708 | ||
1709 | if (!gotent) | |
9e756d64 | 1710 | { |
a7519a3c RH |
1711 | int entry_size; |
1712 | bfd_size_type amt; | |
9e756d64 | 1713 | |
a7519a3c RH |
1714 | amt = sizeof (struct alpha_elf_got_entry); |
1715 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1716 | if (!gotent) | |
1717 | return NULL; | |
9e756d64 | 1718 | |
a7519a3c RH |
1719 | gotent->gotobj = abfd; |
1720 | gotent->addend = r_addend; | |
1721 | gotent->got_offset = -1; | |
6ec7057a | 1722 | gotent->plt_offset = -1; |
a7519a3c RH |
1723 | gotent->use_count = 1; |
1724 | gotent->reloc_type = r_type; | |
1725 | gotent->reloc_done = 0; | |
1726 | gotent->reloc_xlated = 0; | |
9e756d64 | 1727 | |
a7519a3c RH |
1728 | gotent->next = *slot; |
1729 | *slot = gotent; | |
9e756d64 | 1730 | |
a7519a3c RH |
1731 | entry_size = alpha_got_entry_size (r_type); |
1732 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1733 | if (!h) | |
1734 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1735 | } |
a7519a3c RH |
1736 | else |
1737 | gotent->use_count += 1; | |
9e756d64 | 1738 | |
a7519a3c | 1739 | return gotent; |
9e756d64 RH |
1740 | } |
1741 | ||
6ec7057a RH |
1742 | static bfd_boolean |
1743 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1744 | { | |
1745 | return ((ah->root.type == STT_FUNC | |
1746 | || ah->root.root.type == bfd_link_hash_undefweak | |
1747 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1748 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1749 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1750 | } |
1751 | ||
a7519a3c RH |
1752 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1753 | ||
b34976b6 | 1754 | static bfd_boolean |
a7519a3c RH |
1755 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1756 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1757 | { |
a7519a3c RH |
1758 | bfd *dynobj; |
1759 | asection *sreloc; | |
252b5132 | 1760 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1761 | struct alpha_elf_link_hash_entry **sym_hashes; |
1762 | const Elf_Internal_Rela *rel, *relend; | |
a7519a3c | 1763 | bfd_size_type amt; |
252b5132 | 1764 | |
a7519a3c RH |
1765 | if (info->relocatable) |
1766 | return TRUE; | |
252b5132 | 1767 | |
a7519a3c RH |
1768 | /* Don't do anything special with non-loaded, non-alloced sections. |
1769 | In particular, any relocs in such sections should not affect GOT | |
1770 | and PLT reference counting (ie. we don't allow them to create GOT | |
1771 | or PLT entries), there's no possibility or desire to optimize TLS | |
1772 | relocs, and there's not much point in propagating relocs to shared | |
1773 | libs that the dynamic linker won't relocate. */ | |
1774 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1775 | return TRUE; |
252b5132 | 1776 | |
0ffa91dd NC |
1777 | BFD_ASSERT (is_alpha_elf (abfd)); |
1778 | ||
1779 | dynobj = elf_hash_table (info)->dynobj; | |
a7519a3c | 1780 | if (dynobj == NULL) |
0ffa91dd | 1781 | elf_hash_table (info)->dynobj = dynobj = abfd; |
252b5132 | 1782 | |
a7519a3c | 1783 | sreloc = NULL; |
0ffa91dd NC |
1784 | symtab_hdr = &elf_symtab_hdr (abfd); |
1785 | sym_hashes = alpha_elf_sym_hashes (abfd); | |
a7519a3c RH |
1786 | |
1787 | relend = relocs + sec->reloc_count; | |
1788 | for (rel = relocs; rel < relend; ++rel) | |
1789 | { | |
1790 | enum { | |
1791 | NEED_GOT = 1, | |
1792 | NEED_GOT_ENTRY = 2, | |
1793 | NEED_DYNREL = 4 | |
1794 | }; | |
1795 | ||
1796 | unsigned long r_symndx, r_type; | |
1797 | struct alpha_elf_link_hash_entry *h; | |
1798 | unsigned int gotent_flags; | |
1799 | bfd_boolean maybe_dynamic; | |
1800 | unsigned int need; | |
1801 | bfd_vma addend; | |
1802 | ||
1803 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1804 | if (r_symndx < symtab_hdr->sh_info) | |
1805 | h = NULL; | |
1806 | else | |
1807 | { | |
1808 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1809 | |
a7519a3c RH |
1810 | while (h->root.root.type == bfd_link_hash_indirect |
1811 | || h->root.root.type == bfd_link_hash_warning) | |
1812 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1813 | |
a7519a3c RH |
1814 | h->root.ref_regular = 1; |
1815 | } | |
252b5132 | 1816 | |
a7519a3c RH |
1817 | /* We can only get preliminary data on whether a symbol is |
1818 | locally or externally defined, as not all of the input files | |
1819 | have yet been processed. Do something with what we know, as | |
1820 | this may help reduce memory usage and processing time later. */ | |
1821 | maybe_dynamic = FALSE; | |
1822 | if (h && ((info->shared | |
1823 | && (!info->symbolic | |
1824 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1825 | || !h->root.def_regular | |
1826 | || h->root.root.type == bfd_link_hash_defweak)) | |
1827 | maybe_dynamic = TRUE; | |
252b5132 | 1828 | |
a7519a3c RH |
1829 | need = 0; |
1830 | gotent_flags = 0; | |
1831 | r_type = ELF64_R_TYPE (rel->r_info); | |
1832 | addend = rel->r_addend; | |
9e756d64 | 1833 | |
9e756d64 RH |
1834 | switch (r_type) |
1835 | { | |
1836 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1837 | need = NEED_GOT | NEED_GOT_ENTRY; |
1838 | ||
1839 | /* Remember how this literal is used from its LITUSEs. | |
1840 | This will be important when it comes to decide if we can | |
1841 | create a .plt entry for a function symbol. */ | |
1842 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1843 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1844 | gotent_flags |= 1 << rel->r_addend; |
1845 | --rel; | |
1846 | ||
1847 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1848 | if (gotent_flags == 0) | |
1849 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1850 | break; | |
1851 | ||
1852 | case R_ALPHA_GPDISP: | |
1853 | case R_ALPHA_GPREL16: | |
1854 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1855 | case R_ALPHA_GPRELHIGH: |
1856 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1857 | case R_ALPHA_BRSGP: |
1858 | need = NEED_GOT; | |
1859 | break; | |
1860 | ||
1861 | case R_ALPHA_REFLONG: | |
1862 | case R_ALPHA_REFQUAD: | |
1863 | if (info->shared || maybe_dynamic) | |
1864 | need = NEED_DYNREL; | |
cc03ec80 RH |
1865 | break; |
1866 | ||
9e756d64 | 1867 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1868 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d TS |
1869 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
1870 | r_symndx = STN_UNDEF; | |
a7519a3c RH |
1871 | h = 0; |
1872 | maybe_dynamic = FALSE; | |
1873 | /* FALLTHRU */ | |
1874 | ||
1875 | case R_ALPHA_TLSGD: | |
1876 | case R_ALPHA_GOTDTPREL: | |
1877 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1878 | break; |
cc03ec80 | 1879 | |
a7519a3c RH |
1880 | case R_ALPHA_GOTTPREL: |
1881 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1882 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1883 | if (info->shared) | |
1884 | info->flags |= DF_STATIC_TLS; | |
1885 | break; | |
1886 | ||
1887 | case R_ALPHA_TPREL64: | |
1888 | if (info->shared || maybe_dynamic) | |
1889 | need = NEED_DYNREL; | |
1890 | if (info->shared) | |
1891 | info->flags |= DF_STATIC_TLS; | |
1892 | break; | |
252b5132 RH |
1893 | } |
1894 | ||
a7519a3c | 1895 | if (need & NEED_GOT) |
252b5132 | 1896 | { |
85d162e6 | 1897 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
6cdc0ccc | 1898 | { |
a7519a3c RH |
1899 | if (!elf64_alpha_create_got_section (abfd, info)) |
1900 | return FALSE; | |
c328dc3f | 1901 | } |
252b5132 | 1902 | } |
252b5132 | 1903 | |
a7519a3c RH |
1904 | if (need & NEED_GOT_ENTRY) |
1905 | { | |
1906 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1907 | |
a7519a3c RH |
1908 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1909 | if (!gotent) | |
1910 | return FALSE; | |
4a67a098 | 1911 | |
a7519a3c | 1912 | if (gotent_flags) |
cc03ec80 | 1913 | { |
a7519a3c RH |
1914 | gotent->flags |= gotent_flags; |
1915 | if (h) | |
1916 | { | |
1917 | gotent_flags |= h->flags; | |
1918 | h->flags = gotent_flags; | |
4a67a098 | 1919 | |
a7519a3c | 1920 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1921 | /* ??? It appears that we won't make it into |
1922 | adjust_dynamic_symbol for symbols that remain | |
1923 | totally undefined. Copying this check here means | |
1924 | we can create a plt entry for them too. */ | |
1925 | h->root.needs_plt | |
1926 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1927 | } | |
a7519a3c | 1928 | } |
252b5132 RH |
1929 | } |
1930 | ||
a7519a3c | 1931 | if (need & NEED_DYNREL) |
9e756d64 | 1932 | { |
a7519a3c RH |
1933 | /* We need to create the section here now whether we eventually |
1934 | use it or not so that it gets mapped to an output section by | |
83bac4b0 | 1935 | the linker. If not used, we'll kill it in size_dynamic_sections. */ |
a7519a3c | 1936 | if (sreloc == NULL) |
9e756d64 | 1937 | { |
83bac4b0 NC |
1938 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1939 | (sec, dynobj, 3, abfd, /*rela?*/ TRUE); | |
1940 | ||
a7519a3c | 1941 | if (sreloc == NULL) |
83bac4b0 | 1942 | return FALSE; |
9e756d64 | 1943 | } |
252b5132 | 1944 | |
a7519a3c RH |
1945 | if (h) |
1946 | { | |
1947 | /* Since we havn't seen all of the input symbols yet, we | |
1948 | don't know whether we'll actually need a dynamic relocation | |
1949 | entry for this reloc. So make a record of it. Once we | |
1950 | find out if this thing needs dynamic relocation we'll | |
1951 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1952 | |
a7519a3c | 1953 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1954 | |
a7519a3c RH |
1955 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1956 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1957 | break; | |
252b5132 | 1958 | |
a7519a3c RH |
1959 | if (!rent) |
1960 | { | |
1961 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1962 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1963 | if (!rent) | |
1964 | return FALSE; | |
252b5132 | 1965 | |
a7519a3c RH |
1966 | rent->srel = sreloc; |
1967 | rent->rtype = r_type; | |
1968 | rent->count = 1; | |
1969 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1970 | |
a7519a3c RH |
1971 | rent->next = h->reloc_entries; |
1972 | h->reloc_entries = rent; | |
1973 | } | |
1974 | else | |
1975 | rent->count++; | |
1976 | } | |
1977 | else if (info->shared) | |
1978 | { | |
1979 | /* If this is a shared library, and the section is to be | |
1980 | loaded into memory, we need a RELATIVE reloc. */ | |
1981 | sreloc->size += sizeof (Elf64_External_Rela); | |
1982 | if (sec->flags & SEC_READONLY) | |
1983 | info->flags |= DF_TEXTREL; | |
1984 | } | |
252b5132 RH |
1985 | } |
1986 | } | |
1987 | ||
b34976b6 | 1988 | return TRUE; |
252b5132 | 1989 | } |
252b5132 | 1990 | |
a7519a3c RH |
1991 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1992 | regular object. The current definition is in some section of the | |
1993 | dynamic object, but we're not including those sections. We have to | |
1994 | change the definition to something the rest of the link can | |
1995 | understand. */ | |
252b5132 | 1996 | |
b34976b6 | 1997 | static bfd_boolean |
a7519a3c RH |
1998 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
1999 | struct elf_link_hash_entry *h) | |
252b5132 | 2000 | { |
a7519a3c RH |
2001 | bfd *dynobj; |
2002 | asection *s; | |
2003 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 2004 | |
a7519a3c RH |
2005 | dynobj = elf_hash_table(info)->dynobj; |
2006 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 2007 | |
a7519a3c | 2008 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2009 | about whether this symbol should get a .plt entry. Irritatingly, it |
2010 | is common for folk to leave undefined symbols in shared libraries, | |
2011 | and they still expect lazy binding; accept undefined symbols in lieu | |
2012 | of STT_FUNC. */ | |
2013 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2014 | { |
6ec7057a | 2015 | h->needs_plt = TRUE; |
252b5132 | 2016 | |
a7519a3c RH |
2017 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2018 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2019 | return FALSE; | |
204692d7 | 2020 | |
6ec7057a RH |
2021 | /* We need one plt entry per got subsection. Delay allocation of |
2022 | the actual plt entries until size_plt_section, called from | |
2023 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2024 | |
a7519a3c RH |
2025 | return TRUE; |
2026 | } | |
2027 | else | |
6ec7057a | 2028 | h->needs_plt = FALSE; |
252b5132 | 2029 | |
a7519a3c RH |
2030 | /* If this is a weak symbol, and there is a real definition, the |
2031 | processor independent code will have arranged for us to see the | |
2032 | real definition first, and we can just use the same value. */ | |
2033 | if (h->u.weakdef != NULL) | |
252b5132 | 2034 | { |
a7519a3c RH |
2035 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2036 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2037 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2038 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2039 | return TRUE; | |
252b5132 | 2040 | } |
a7519a3c RH |
2041 | |
2042 | /* This is a reference to a symbol defined by a dynamic object which | |
2043 | is not a function. The Alpha, since it uses .got entries for all | |
2044 | symbols even in regular objects, does not need the hackery of a | |
2045 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2046 | |
b34976b6 | 2047 | return TRUE; |
252b5132 RH |
2048 | } |
2049 | ||
747ffa7b AM |
2050 | /* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */ |
2051 | ||
2052 | static void | |
2053 | elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
2054 | const Elf_Internal_Sym *isym, | |
2055 | bfd_boolean definition, | |
2056 | bfd_boolean dynamic) | |
2057 | { | |
2058 | if (!dynamic && definition) | |
2059 | h->other = ((h->other & ELF_ST_VISIBILITY (-1)) | |
2060 | | (isym->st_other & ~ELF_ST_VISIBILITY (-1))); | |
2061 | } | |
2062 | ||
a7519a3c RH |
2063 | /* Symbol versioning can create new symbols, and make our old symbols |
2064 | indirect to the new ones. Consolidate the got and reloc information | |
2065 | in these situations. */ | |
252b5132 | 2066 | |
b34976b6 | 2067 | static bfd_boolean |
a7519a3c RH |
2068 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2069 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2070 | { |
a7519a3c | 2071 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2072 | |
a7519a3c RH |
2073 | if (hi->root.root.type != bfd_link_hash_indirect) |
2074 | return TRUE; | |
2075 | hs = hi; | |
2076 | do { | |
2077 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2078 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2079 | |
a7519a3c RH |
2080 | /* Merge the flags. Whee. */ |
2081 | ||
2082 | hs->flags |= hi->flags; | |
2083 | ||
2084 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2085 | doing so, since we don't need it anymore. */ | |
2086 | ||
2087 | if (hs->got_entries == NULL) | |
2088 | hs->got_entries = hi->got_entries; | |
2089 | else | |
2090 | { | |
2091 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2092 | ||
2093 | gsh = hs->got_entries; | |
2094 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2095 | { |
a7519a3c RH |
2096 | gin = gi->next; |
2097 | for (gs = gsh; gs ; gs = gs->next) | |
2098 | if (gi->gotobj == gs->gotobj | |
2099 | && gi->reloc_type == gs->reloc_type | |
2100 | && gi->addend == gs->addend) | |
2101 | { | |
2102 | gi->use_count += gs->use_count; | |
2103 | goto got_found; | |
2104 | } | |
2105 | gi->next = hs->got_entries; | |
2106 | hs->got_entries = gi; | |
2107 | got_found:; | |
252b5132 | 2108 | } |
a7519a3c RH |
2109 | } |
2110 | hi->got_entries = NULL; | |
252b5132 | 2111 | |
a7519a3c RH |
2112 | /* And similar for the reloc entries. */ |
2113 | ||
2114 | if (hs->reloc_entries == NULL) | |
2115 | hs->reloc_entries = hi->reloc_entries; | |
2116 | else | |
2117 | { | |
2118 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2119 | ||
2120 | rsh = hs->reloc_entries; | |
2121 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2122 | { | |
2123 | rin = ri->next; | |
2124 | for (rs = rsh; rs ; rs = rs->next) | |
2125 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2126 | { | |
2127 | rs->count += ri->count; | |
2128 | goto found_reloc; | |
2129 | } | |
2130 | ri->next = hs->reloc_entries; | |
2131 | hs->reloc_entries = ri; | |
2132 | found_reloc:; | |
2133 | } | |
252b5132 | 2134 | } |
a7519a3c | 2135 | hi->reloc_entries = NULL; |
252b5132 | 2136 | |
b34976b6 | 2137 | return TRUE; |
252b5132 RH |
2138 | } |
2139 | ||
a7519a3c | 2140 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2141 | |
b34976b6 | 2142 | static bfd_boolean |
a7519a3c | 2143 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2144 | { |
a7519a3c RH |
2145 | int total = alpha_elf_tdata (a)->total_got_size; |
2146 | bfd *bsub; | |
252b5132 | 2147 | |
a7519a3c RH |
2148 | /* Trivial quick fallout test. */ |
2149 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2150 | return TRUE; | |
252b5132 | 2151 | |
a7519a3c RH |
2152 | /* By their nature, local .got entries cannot be merged. */ |
2153 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2154 | return FALSE; |
252b5132 | 2155 | |
a7519a3c RH |
2156 | /* Failing the common trivial comparison, we must effectively |
2157 | perform the merge. Not actually performing the merge means that | |
2158 | we don't have to store undo information in case we fail. */ | |
2159 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2160 | { | |
2161 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2162 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2163 | int i, n; | |
2164 | ||
2165 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2166 | for (i = 0; i < n; ++i) | |
2167 | { | |
2168 | struct alpha_elf_got_entry *ae, *be; | |
2169 | struct alpha_elf_link_hash_entry *h; | |
2170 | ||
2171 | h = hashes[i]; | |
2172 | while (h->root.root.type == bfd_link_hash_indirect | |
2173 | || h->root.root.type == bfd_link_hash_warning) | |
2174 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2175 | ||
2176 | for (be = h->got_entries; be ; be = be->next) | |
2177 | { | |
2178 | if (be->use_count == 0) | |
2179 | continue; | |
2180 | if (be->gotobj != b) | |
2181 | continue; | |
2182 | ||
2183 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2184 | if (ae->gotobj == a | |
2185 | && ae->reloc_type == be->reloc_type | |
2186 | && ae->addend == be->addend) | |
2187 | goto global_found; | |
2188 | ||
2189 | total += alpha_got_entry_size (be->reloc_type); | |
2190 | if (total > MAX_GOT_SIZE) | |
2191 | return FALSE; | |
2192 | global_found:; | |
2193 | } | |
2194 | } | |
2195 | } | |
252b5132 | 2196 | |
b34976b6 | 2197 | return TRUE; |
252b5132 RH |
2198 | } |
2199 | ||
a7519a3c | 2200 | /* Actually merge two .got tables. */ |
252b5132 | 2201 | |
a7519a3c RH |
2202 | static void |
2203 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2204 | { |
a7519a3c RH |
2205 | int total = alpha_elf_tdata (a)->total_got_size; |
2206 | bfd *bsub; | |
252b5132 | 2207 | |
a7519a3c RH |
2208 | /* Remember local expansion. */ |
2209 | { | |
2210 | int e = alpha_elf_tdata (b)->local_got_size; | |
2211 | total += e; | |
2212 | alpha_elf_tdata (a)->local_got_size += e; | |
2213 | } | |
252b5132 | 2214 | |
a7519a3c RH |
2215 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2216 | { | |
2217 | struct alpha_elf_got_entry **local_got_entries; | |
2218 | struct alpha_elf_link_hash_entry **hashes; | |
2219 | Elf_Internal_Shdr *symtab_hdr; | |
2220 | int i, n; | |
252b5132 | 2221 | |
a7519a3c RH |
2222 | /* Let the local .got entries know they are part of a new subsegment. */ |
2223 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2224 | if (local_got_entries) | |
2225 | { | |
2226 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2227 | for (i = 0; i < n; ++i) | |
2228 | { | |
2229 | struct alpha_elf_got_entry *ent; | |
2230 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2231 | ent->gotobj = a; | |
2232 | } | |
2233 | } | |
252b5132 | 2234 | |
a7519a3c RH |
2235 | /* Merge the global .got entries. */ |
2236 | hashes = alpha_elf_sym_hashes (bsub); | |
2237 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2238 | |
a7519a3c RH |
2239 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2240 | for (i = 0; i < n; ++i) | |
2241 | { | |
2242 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2243 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2244 | |
a7519a3c RH |
2245 | h = hashes[i]; |
2246 | while (h->root.root.type == bfd_link_hash_indirect | |
2247 | || h->root.root.type == bfd_link_hash_warning) | |
2248 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2249 | |
a7519a3c RH |
2250 | pbe = start = &h->got_entries; |
2251 | while ((be = *pbe) != NULL) | |
2252 | { | |
2253 | if (be->use_count == 0) | |
2254 | { | |
2255 | *pbe = be->next; | |
2256 | memset (be, 0xa5, sizeof (*be)); | |
2257 | goto kill; | |
2258 | } | |
2259 | if (be->gotobj != b) | |
2260 | goto next; | |
2261 | ||
2262 | for (ae = *start; ae ; ae = ae->next) | |
2263 | if (ae->gotobj == a | |
2264 | && ae->reloc_type == be->reloc_type | |
2265 | && ae->addend == be->addend) | |
2266 | { | |
2267 | ae->flags |= be->flags; | |
2268 | ae->use_count += be->use_count; | |
2269 | *pbe = be->next; | |
2270 | memset (be, 0xa5, sizeof (*be)); | |
2271 | goto kill; | |
2272 | } | |
2273 | be->gotobj = a; | |
2274 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2275 | |
a7519a3c RH |
2276 | next:; |
2277 | pbe = &be->next; | |
2278 | kill:; | |
2279 | } | |
2280 | } | |
252b5132 | 2281 | |
a7519a3c RH |
2282 | alpha_elf_tdata (bsub)->gotobj = a; |
2283 | } | |
2284 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2285 | |
a7519a3c RH |
2286 | /* Merge the two in_got chains. */ |
2287 | { | |
2288 | bfd *next; | |
252b5132 | 2289 | |
a7519a3c RH |
2290 | bsub = a; |
2291 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2292 | bsub = next; | |
252b5132 | 2293 | |
a7519a3c RH |
2294 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2295 | } | |
252b5132 | 2296 | } |
a7519a3c RH |
2297 | |
2298 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2299 | |
b34976b6 | 2300 | static bfd_boolean |
a7519a3c RH |
2301 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2302 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2303 | { |
a7519a3c | 2304 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2305 | |
a7519a3c RH |
2306 | if (h->root.root.type == bfd_link_hash_warning) |
2307 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2308 | |
a7519a3c RH |
2309 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2310 | if (gotent->use_count > 0) | |
2311 | { | |
2312 | struct alpha_elf_obj_tdata *td; | |
2313 | bfd_size_type *plge; | |
252b5132 | 2314 | |
a7519a3c | 2315 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2316 | plge = &td->got->size; |
2317 | gotent->got_offset = *plge; | |
2318 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2319 | } | |
252b5132 | 2320 | |
6ec7057a | 2321 | return TRUE; |
a7519a3c | 2322 | } |
252b5132 | 2323 | |
a7519a3c RH |
2324 | static void |
2325 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2326 | { | |
4dfe6ac6 NC |
2327 | bfd *i, *got_list; |
2328 | struct alpha_elf_link_hash_table * htab; | |
2329 | ||
2330 | htab = alpha_elf_hash_table (info); | |
2331 | if (htab == NULL) | |
2332 | return; | |
2333 | got_list = htab->got_list; | |
252b5132 | 2334 | |
a7519a3c RH |
2335 | /* First, zero out the .got sizes, as we may be recalculating the |
2336 | .got after optimizing it. */ | |
2337 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2338 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2339 | |
a7519a3c | 2340 | /* Next, fill in the offsets for all the global entries. */ |
4dfe6ac6 | 2341 | alpha_elf_link_hash_traverse (htab, |
a7519a3c RH |
2342 | elf64_alpha_calc_got_offsets_for_symbol, |
2343 | NULL); | |
252b5132 | 2344 | |
a7519a3c RH |
2345 | /* Finally, fill in the offsets for the local entries. */ |
2346 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2347 | { | |
2348 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2349 | bfd *j; | |
252b5132 | 2350 | |
a7519a3c RH |
2351 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2352 | { | |
2353 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2354 | int k, n; | |
252b5132 | 2355 | |
a7519a3c RH |
2356 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2357 | if (!local_got_entries) | |
2358 | continue; | |
252b5132 | 2359 | |
a7519a3c RH |
2360 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2361 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2362 | if (gotent->use_count > 0) | |
2363 | { | |
2364 | gotent->got_offset = got_offset; | |
2365 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2366 | } | |
2367 | } | |
252b5132 | 2368 | |
a7519a3c RH |
2369 | alpha_elf_tdata(i)->got->size = got_offset; |
2370 | } | |
2371 | } | |
252b5132 | 2372 | |
a7519a3c | 2373 | /* Constructs the gots. */ |
252b5132 | 2374 | |
b34976b6 | 2375 | static bfd_boolean |
a7519a3c | 2376 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2377 | { |
a7519a3c | 2378 | bfd *i, *got_list, *cur_got_obj = NULL; |
4dfe6ac6 | 2379 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2380 | |
4dfe6ac6 NC |
2381 | htab = alpha_elf_hash_table (info); |
2382 | if (htab == NULL) | |
2383 | return FALSE; | |
2384 | got_list = htab->got_list; | |
95404643 | 2385 | |
a7519a3c RH |
2386 | /* On the first time through, pretend we have an existing got list |
2387 | consisting of all of the input files. */ | |
2388 | if (got_list == NULL) | |
252b5132 | 2389 | { |
a7519a3c | 2390 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2391 | { |
0ffa91dd NC |
2392 | bfd *this_got; |
2393 | ||
2394 | if (! is_alpha_elf (i)) | |
2395 | continue; | |
2396 | ||
2397 | this_got = alpha_elf_tdata (i)->gotobj; | |
a7519a3c RH |
2398 | if (this_got == NULL) |
2399 | continue; | |
252b5132 | 2400 | |
a7519a3c RH |
2401 | /* We are assuming no merging has yet occurred. */ |
2402 | BFD_ASSERT (this_got == i); | |
252b5132 | 2403 | |
a7519a3c | 2404 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2405 | { |
a7519a3c RH |
2406 | /* Yikes! A single object file has too many entries. */ |
2407 | (*_bfd_error_handler) | |
2408 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2409 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2410 | return FALSE; |
252b5132 | 2411 | } |
252b5132 | 2412 | |
a7519a3c RH |
2413 | if (got_list == NULL) |
2414 | got_list = this_got; | |
2415 | else | |
2416 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2417 | cur_got_obj = this_got; | |
252b5132 RH |
2418 | } |
2419 | ||
a7519a3c RH |
2420 | /* Strange degenerate case of no got references. */ |
2421 | if (got_list == NULL) | |
2422 | return TRUE; | |
2423 | ||
4dfe6ac6 | 2424 | htab->got_list = got_list; |
a7519a3c RH |
2425 | } |
2426 | ||
2427 | cur_got_obj = got_list; | |
0ffa91dd NC |
2428 | if (cur_got_obj == NULL) |
2429 | return FALSE; | |
2430 | ||
a7519a3c RH |
2431 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; |
2432 | while (i != NULL) | |
2433 | { | |
2434 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2435 | { |
a7519a3c | 2436 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2437 | |
a7519a3c RH |
2438 | alpha_elf_tdata(i)->got->size = 0; |
2439 | i = alpha_elf_tdata(i)->got_link_next; | |
2440 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
a7519a3c RH |
2441 | } |
2442 | else | |
2443 | { | |
2444 | cur_got_obj = i; | |
2445 | i = alpha_elf_tdata(i)->got_link_next; | |
2446 | } | |
252b5132 RH |
2447 | } |
2448 | ||
a7519a3c RH |
2449 | /* Once the gots have been merged, fill in the got offsets for |
2450 | everything therein. */ | |
4a828aab | 2451 | elf64_alpha_calc_got_offsets (info); |
252b5132 | 2452 | |
a7519a3c | 2453 | return TRUE; |
252b5132 | 2454 | } |
252b5132 | 2455 | |
b34976b6 | 2456 | static bfd_boolean |
a7519a3c | 2457 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2458 | { |
a7519a3c RH |
2459 | asection *splt = (asection *) data; |
2460 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2461 | bfd_boolean saw_one = FALSE; |
252b5132 | 2462 | |
a7519a3c RH |
2463 | /* If we didn't need an entry before, we still don't. */ |
2464 | if (!h->root.needs_plt) | |
2465 | return TRUE; | |
e92d460e | 2466 | |
6ec7057a | 2467 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2468 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2469 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2470 | && gotent->use_count > 0) | |
6ec7057a RH |
2471 | { |
2472 | if (splt->size == 0) | |
2473 | splt->size = PLT_HEADER_SIZE; | |
2474 | gotent->plt_offset = splt->size; | |
2475 | splt->size += PLT_ENTRY_SIZE; | |
2476 | saw_one = TRUE; | |
2477 | } | |
a7519a3c | 2478 | |
6ec7057a RH |
2479 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2480 | if (!saw_one) | |
2481 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2482 | |
2483 | return TRUE; | |
2484 | } | |
2485 | ||
4a828aab RH |
2486 | /* Called from relax_section to rebuild the PLT in light of potential changes |
2487 | in the function's status. */ | |
a7519a3c | 2488 | |
4a828aab | 2489 | static void |
a7519a3c RH |
2490 | elf64_alpha_size_plt_section (struct bfd_link_info *info) |
2491 | { | |
6ec7057a | 2492 | asection *splt, *spltrel, *sgotplt; |
a7519a3c RH |
2493 | unsigned long entries; |
2494 | bfd *dynobj; | |
4dfe6ac6 NC |
2495 | struct alpha_elf_link_hash_table * htab; |
2496 | ||
2497 | htab = alpha_elf_hash_table (info); | |
2498 | if (htab == NULL) | |
2499 | return; | |
a7519a3c RH |
2500 | |
2501 | dynobj = elf_hash_table(info)->dynobj; | |
6ec7057a | 2502 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
a7519a3c | 2503 | if (splt == NULL) |
4a828aab | 2504 | return; |
252b5132 | 2505 | |
a7519a3c | 2506 | splt->size = 0; |
252b5132 | 2507 | |
4dfe6ac6 | 2508 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2509 | elf64_alpha_size_plt_section_1, splt); |
e92d460e | 2510 | |
a7519a3c RH |
2511 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2512 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4a828aab | 2513 | entries = 0; |
a7519a3c | 2514 | if (splt->size) |
6ec7057a RH |
2515 | { |
2516 | if (elf64_alpha_use_secureplt) | |
2517 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2518 | else | |
2519 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2520 | } | |
a7519a3c | 2521 | spltrel->size = entries * sizeof (Elf64_External_Rela); |
e92d460e | 2522 | |
6ec7057a RH |
2523 | /* When using the secureplt, we need two words somewhere in the data |
2524 | segment for the dynamic linker to tell us where to go. This is the | |
2525 | entire contents of the .got.plt section. */ | |
2526 | if (elf64_alpha_use_secureplt) | |
2527 | { | |
2528 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2529 | sgotplt->size = entries ? 16 : 0; | |
2530 | } | |
a7519a3c | 2531 | } |
e92d460e | 2532 | |
a7519a3c RH |
2533 | static bfd_boolean |
2534 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2535 | struct bfd_link_info *info) | |
2536 | { | |
2537 | bfd *i; | |
4dfe6ac6 | 2538 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2539 | |
a7519a3c RH |
2540 | if (info->relocatable) |
2541 | return TRUE; | |
252b5132 | 2542 | |
4dfe6ac6 NC |
2543 | htab = alpha_elf_hash_table (info); |
2544 | if (htab == NULL) | |
2545 | return FALSE; | |
2546 | ||
a7519a3c | 2547 | /* First, take care of the indirect symbols created by versioning. */ |
4dfe6ac6 | 2548 | alpha_elf_link_hash_traverse (htab, elf64_alpha_merge_ind_symbols, |
a7519a3c | 2549 | NULL); |
252b5132 | 2550 | |
a7519a3c RH |
2551 | if (!elf64_alpha_size_got_sections (info)) |
2552 | return FALSE; | |
252b5132 | 2553 | |
a7519a3c | 2554 | /* Allocate space for all of the .got subsections. */ |
4dfe6ac6 | 2555 | i = htab->got_list; |
a7519a3c | 2556 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) |
252b5132 | 2557 | { |
a7519a3c RH |
2558 | asection *s = alpha_elf_tdata(i)->got; |
2559 | if (s->size > 0) | |
2560 | { | |
2561 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2562 | if (s->contents == NULL) | |
2563 | return FALSE; | |
2564 | } | |
252b5132 RH |
2565 | } |
2566 | ||
b34976b6 | 2567 | return TRUE; |
252b5132 | 2568 | } |
3765b1be | 2569 | |
a7519a3c | 2570 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2571 | |
a7519a3c RH |
2572 | static int |
2573 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2574 | { | |
2575 | switch (r_type) | |
3765b1be | 2576 | { |
a7519a3c RH |
2577 | /* May appear in GOT entries. */ |
2578 | case R_ALPHA_TLSGD: | |
2579 | return (dynamic ? 2 : shared ? 1 : 0); | |
2580 | case R_ALPHA_TLSLDM: | |
2581 | return shared; | |
2582 | case R_ALPHA_LITERAL: | |
2583 | case R_ALPHA_GOTTPREL: | |
2584 | return dynamic || shared; | |
2585 | case R_ALPHA_GOTDTPREL: | |
2586 | return dynamic; | |
3765b1be | 2587 | |
a7519a3c RH |
2588 | /* May appear in data sections. */ |
2589 | case R_ALPHA_REFLONG: | |
2590 | case R_ALPHA_REFQUAD: | |
2591 | case R_ALPHA_TPREL64: | |
2592 | return dynamic || shared; | |
3765b1be | 2593 | |
a7519a3c RH |
2594 | /* Everything else is illegal. We'll issue an error during |
2595 | relocate_section. */ | |
2596 | default: | |
2597 | return 0; | |
2598 | } | |
2599 | } | |
3765b1be | 2600 | |
a7519a3c | 2601 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2602 | |
a7519a3c RH |
2603 | static bfd_boolean |
2604 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2605 | struct bfd_link_info *info) | |
2606 | { | |
2607 | bfd_boolean dynamic; | |
2608 | struct alpha_elf_reloc_entry *relent; | |
2609 | unsigned long entries; | |
3765b1be | 2610 | |
a7519a3c RH |
2611 | if (h->root.root.type == bfd_link_hash_warning) |
2612 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2613 | |
a7519a3c RH |
2614 | /* If the symbol was defined as a common symbol in a regular object |
2615 | file, and there was no definition in any dynamic object, then the | |
2616 | linker will have allocated space for the symbol in a common | |
2617 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2618 | set. This is done for dynamic symbols in | |
2619 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2620 | symbols, somehow. */ | |
2621 | if (!h->root.def_regular | |
2622 | && h->root.ref_regular | |
2623 | && !h->root.def_dynamic | |
2624 | && (h->root.root.type == bfd_link_hash_defined | |
2625 | || h->root.root.type == bfd_link_hash_defweak) | |
2626 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2627 | h->root.def_regular = 1; | |
3765b1be | 2628 | |
a7519a3c RH |
2629 | /* If the symbol is dynamic, we'll need all the relocations in their |
2630 | natural form. If this is a shared object, and it has been forced | |
2631 | local, we'll need the same number of RELATIVE relocations. */ | |
2632 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2633 | |
a7519a3c RH |
2634 | /* If the symbol is a hidden undefined weak, then we never have any |
2635 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2636 | based on info->shared. */ | |
2637 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2638 | return TRUE; | |
2639 | ||
2640 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2641 | { |
a7519a3c RH |
2642 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2643 | info->shared); | |
2644 | if (entries) | |
2645 | { | |
2646 | relent->srel->size += | |
2647 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2648 | if (relent->reltext) | |
2649 | info->flags |= DT_TEXTREL; | |
2650 | } | |
2651 | } | |
3765b1be | 2652 | |
a7519a3c RH |
2653 | return TRUE; |
2654 | } | |
3765b1be | 2655 | |
a7519a3c RH |
2656 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2657 | global symbols. */ | |
3765b1be | 2658 | |
a7519a3c RH |
2659 | static bfd_boolean |
2660 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2661 | struct bfd_link_info *info) | |
2662 | { | |
2663 | bfd_boolean dynamic; | |
2664 | struct alpha_elf_got_entry *gotent; | |
2665 | unsigned long entries; | |
3765b1be | 2666 | |
a7519a3c RH |
2667 | if (h->root.root.type == bfd_link_hash_warning) |
2668 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2669 | ||
6ec7057a RH |
2670 | /* If we're using a plt for this symbol, then all of its relocations |
2671 | for its got entries go into .rela.plt. */ | |
2672 | if (h->root.needs_plt) | |
2673 | return TRUE; | |
2674 | ||
a7519a3c RH |
2675 | /* If the symbol is dynamic, we'll need all the relocations in their |
2676 | natural form. If this is a shared object, and it has been forced | |
2677 | local, we'll need the same number of RELATIVE relocations. */ | |
2678 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2679 | ||
2680 | /* If the symbol is a hidden undefined weak, then we never have any | |
2681 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2682 | based on info->shared. */ | |
2683 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2684 | return TRUE; | |
2685 | ||
2686 | entries = 0; | |
2687 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2688 | if (gotent->use_count > 0) | |
2689 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2690 | dynamic, info->shared); | |
2691 | ||
a7519a3c RH |
2692 | if (entries > 0) |
2693 | { | |
2694 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2695 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2696 | BFD_ASSERT (srel != NULL); | |
2697 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2698 | } |
3765b1be | 2699 | |
a7519a3c | 2700 | return TRUE; |
3765b1be RH |
2701 | } |
2702 | ||
a7519a3c | 2703 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2704 | |
4a828aab | 2705 | static void |
a7519a3c | 2706 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2707 | { |
a7519a3c RH |
2708 | unsigned long entries; |
2709 | bfd *i, *dynobj; | |
2710 | asection *srel; | |
4dfe6ac6 NC |
2711 | struct alpha_elf_link_hash_table * htab; |
2712 | ||
2713 | htab = alpha_elf_hash_table (info); | |
2714 | if (htab == NULL) | |
2715 | return; | |
252b5132 | 2716 | |
a7519a3c RH |
2717 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2718 | require attention for the main application as well. */ | |
252b5132 | 2719 | |
a7519a3c | 2720 | entries = 0; |
4dfe6ac6 | 2721 | for (i = htab->got_list; |
a7519a3c RH |
2722 | i ; i = alpha_elf_tdata(i)->got_link_next) |
2723 | { | |
2724 | bfd *j; | |
3241278a | 2725 | |
a7519a3c RH |
2726 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2727 | { | |
2728 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2729 | int k, n; | |
252b5132 | 2730 | |
a7519a3c RH |
2731 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2732 | if (!local_got_entries) | |
2733 | continue; | |
252b5132 | 2734 | |
a7519a3c RH |
2735 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2736 | for (gotent = local_got_entries[k]; | |
2737 | gotent ; gotent = gotent->next) | |
2738 | if (gotent->use_count > 0) | |
2739 | entries += (alpha_dynamic_entries_for_reloc | |
2740 | (gotent->reloc_type, 0, info->shared)); | |
2741 | } | |
2742 | } | |
3765b1be | 2743 | |
a7519a3c RH |
2744 | dynobj = elf_hash_table(info)->dynobj; |
2745 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2746 | if (!srel) | |
2747 | { | |
2748 | BFD_ASSERT (entries == 0); | |
4a828aab | 2749 | return; |
a7519a3c RH |
2750 | } |
2751 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2752 | |
a7519a3c | 2753 | /* Now do the non-local symbols. */ |
4dfe6ac6 | 2754 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2755 | elf64_alpha_size_rela_got_1, info); |
a7519a3c | 2756 | } |
252b5132 | 2757 | |
a7519a3c | 2758 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2759 | |
a7519a3c RH |
2760 | static bfd_boolean |
2761 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2762 | struct bfd_link_info *info) | |
2763 | { | |
2764 | bfd *dynobj; | |
2765 | asection *s; | |
2766 | bfd_boolean relplt; | |
4dfe6ac6 NC |
2767 | struct alpha_elf_link_hash_table * htab; |
2768 | ||
2769 | htab = alpha_elf_hash_table (info); | |
2770 | if (htab == NULL) | |
2771 | return FALSE; | |
3765b1be | 2772 | |
a7519a3c RH |
2773 | dynobj = elf_hash_table(info)->dynobj; |
2774 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2775 | |
a7519a3c RH |
2776 | if (elf_hash_table (info)->dynamic_sections_created) |
2777 | { | |
2778 | /* Set the contents of the .interp section to the interpreter. */ | |
2779 | if (info->executable) | |
252b5132 | 2780 | { |
a7519a3c RH |
2781 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2782 | BFD_ASSERT (s != NULL); | |
2783 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2784 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2785 | } | |
3765b1be | 2786 | |
a7519a3c RH |
2787 | /* Now that we've seen all of the input files, we can decide which |
2788 | symbols need dynamic relocation entries and which don't. We've | |
2789 | collected information in check_relocs that we can now apply to | |
2790 | size the dynamic relocation sections. */ | |
4dfe6ac6 | 2791 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2792 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 2793 | |
a7519a3c | 2794 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2795 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2796 | } |
2797 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2798 | |
a7519a3c RH |
2799 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2800 | determined the sizes of the various dynamic sections. Allocate | |
2801 | memory for them. */ | |
2802 | relplt = FALSE; | |
2803 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2804 | { | |
2805 | const char *name; | |
3765b1be | 2806 | |
a7519a3c RH |
2807 | if (!(s->flags & SEC_LINKER_CREATED)) |
2808 | continue; | |
cc03ec80 | 2809 | |
a7519a3c RH |
2810 | /* It's OK to base decisions on the section name, because none |
2811 | of the dynobj section names depend upon the input files. */ | |
2812 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2813 | |
0112cd26 | 2814 | if (CONST_STRNEQ (name, ".rela")) |
3765b1be | 2815 | { |
c456f082 | 2816 | if (s->size != 0) |
a7519a3c | 2817 | { |
c456f082 | 2818 | if (strcmp (name, ".rela.plt") == 0) |
a7519a3c | 2819 | relplt = TRUE; |
252b5132 | 2820 | |
a7519a3c RH |
2821 | /* We use the reloc_count field as a counter if we need |
2822 | to copy relocs into the output file. */ | |
2823 | s->reloc_count = 0; | |
252b5132 | 2824 | } |
3765b1be | 2825 | } |
0112cd26 | 2826 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 AM |
2827 | && strcmp (name, ".plt") != 0 |
2828 | && strcmp (name, ".dynbss") != 0) | |
3765b1be | 2829 | { |
a7519a3c RH |
2830 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2831 | continue; | |
2832 | } | |
252b5132 | 2833 | |
c456f082 AM |
2834 | if (s->size == 0) |
2835 | { | |
2836 | /* If we don't need this section, strip it from the output file. | |
2837 | This is to handle .rela.bss and .rela.plt. We must create it | |
2838 | in create_dynamic_sections, because it must be created before | |
2839 | the linker maps input sections to output sections. The | |
2840 | linker does that before adjust_dynamic_symbol is called, and | |
2841 | it is that function which decides whether anything needs to | |
2842 | go into these sections. */ | |
2843 | s->flags |= SEC_EXCLUDE; | |
2844 | } | |
2845 | else if ((s->flags & SEC_HAS_CONTENTS) != 0) | |
a7519a3c RH |
2846 | { |
2847 | /* Allocate memory for the section contents. */ | |
2848 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
c456f082 | 2849 | if (s->contents == NULL) |
b34976b6 | 2850 | return FALSE; |
a7519a3c RH |
2851 | } |
2852 | } | |
3765b1be | 2853 | |
a7519a3c RH |
2854 | if (elf_hash_table (info)->dynamic_sections_created) |
2855 | { | |
2856 | /* Add some entries to the .dynamic section. We fill in the | |
2857 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2858 | must add the entries now so that we get the correct size for | |
2859 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2860 | dynamic linker and used by the debugger. */ | |
2861 | #define add_dynamic_entry(TAG, VAL) \ | |
2862 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2863 | |
a7519a3c RH |
2864 | if (info->executable) |
2865 | { | |
2866 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2867 | return FALSE; | |
3765b1be RH |
2868 | } |
2869 | ||
a7519a3c | 2870 | if (relplt) |
3765b1be | 2871 | { |
a7519a3c RH |
2872 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2873 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2874 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2875 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2876 | return FALSE; | |
6ec7057a RH |
2877 | |
2878 | if (elf64_alpha_use_secureplt | |
2879 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2880 | return FALSE; | |
a7519a3c | 2881 | } |
252b5132 | 2882 | |
a7519a3c RH |
2883 | if (!add_dynamic_entry (DT_RELA, 0) |
2884 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2885 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2886 | return FALSE; | |
2887 | ||
2888 | if (info->flags & DF_TEXTREL) | |
2889 | { | |
2890 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2891 | return FALSE; | |
252b5132 RH |
2892 | } |
2893 | } | |
a7519a3c | 2894 | #undef add_dynamic_entry |
252b5132 | 2895 | |
b34976b6 | 2896 | return TRUE; |
252b5132 | 2897 | } |
a7519a3c RH |
2898 | \f |
2899 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2900 | |
a7519a3c RH |
2901 | Currently I'm only handling what I can do with existing compiler |
2902 | and assembler support, which means no instructions are removed, | |
2903 | though some may be nopped. At this time GCC does not emit enough | |
2904 | information to do all of the relaxing that is possible. It will | |
2905 | take some not small amount of work for that to happen. | |
252b5132 | 2906 | |
a7519a3c RH |
2907 | There are a couple of interesting papers that I once read on this |
2908 | subject, that I cannot find references to at the moment, that | |
2909 | related to Alpha in particular. They are by David Wall, then of | |
2910 | DEC WRL. */ | |
252b5132 | 2911 | |
a7519a3c RH |
2912 | struct alpha_relax_info |
2913 | { | |
2914 | bfd *abfd; | |
2915 | asection *sec; | |
2916 | bfd_byte *contents; | |
2917 | Elf_Internal_Shdr *symtab_hdr; | |
2918 | Elf_Internal_Rela *relocs, *relend; | |
2919 | struct bfd_link_info *link_info; | |
2920 | bfd_vma gp; | |
2921 | bfd *gotobj; | |
2922 | asection *tsec; | |
2923 | struct alpha_elf_link_hash_entry *h; | |
2924 | struct alpha_elf_got_entry **first_gotent; | |
2925 | struct alpha_elf_got_entry *gotent; | |
2926 | bfd_boolean changed_contents; | |
2927 | bfd_boolean changed_relocs; | |
2928 | unsigned char other; | |
2929 | }; | |
252b5132 | 2930 | |
a7519a3c RH |
2931 | static Elf_Internal_Rela * |
2932 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2933 | Elf_Internal_Rela *relend, | |
2934 | bfd_vma offset, int type) | |
2935 | { | |
2936 | while (rel < relend) | |
252b5132 | 2937 | { |
a7519a3c RH |
2938 | if (rel->r_offset == offset |
2939 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2940 | return rel; | |
2941 | ++rel; | |
2942 | } | |
2943 | return NULL; | |
2944 | } | |
252b5132 | 2945 | |
a7519a3c RH |
2946 | static bfd_boolean |
2947 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2948 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2949 | { | |
2950 | unsigned int insn; | |
2951 | bfd_signed_vma disp; | |
252b5132 | 2952 | |
a7519a3c RH |
2953 | /* Get the instruction. */ |
2954 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2955 | |
a7519a3c RH |
2956 | if (insn >> 26 != OP_LDQ) |
2957 | { | |
2958 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2959 | ((*_bfd_error_handler) | |
2960 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2961 | info->abfd, info->sec, | |
2962 | (unsigned long) irel->r_offset, howto->name)); | |
2963 | return TRUE; | |
2964 | } | |
252b5132 | 2965 | |
a7519a3c RH |
2966 | /* Can't relax dynamic symbols. */ |
2967 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2968 | return TRUE; | |
252b5132 | 2969 | |
a7519a3c RH |
2970 | /* Can't use local-exec relocations in shared libraries. */ |
2971 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2972 | return TRUE; | |
252b5132 | 2973 | |
a7519a3c RH |
2974 | if (r_type == R_ALPHA_LITERAL) |
2975 | { | |
2976 | /* Look for nice constant addresses. This includes the not-uncommon | |
2977 | special case of 0 for undefweak symbols. */ | |
2978 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2979 | || (!info->link_info->shared | |
2980 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2981 | { | |
2982 | disp = 0; | |
2983 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2984 | insn |= (symval & 0xffff); | |
2985 | r_type = R_ALPHA_NONE; | |
2986 | } | |
2987 | else | |
2988 | { | |
2989 | disp = symval - info->gp; | |
2990 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2991 | r_type = R_ALPHA_GPREL16; | |
2992 | } | |
252b5132 RH |
2993 | } |
2994 | else | |
252b5132 | 2995 | { |
a7519a3c | 2996 | bfd_vma dtp_base, tp_base; |
252b5132 | 2997 | |
a7519a3c RH |
2998 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2999 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
3000 | tp_base = alpha_get_tprel_base (info->link_info); | |
3001 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 3002 | |
a7519a3c | 3003 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 3004 | |
a7519a3c RH |
3005 | switch (r_type) |
3006 | { | |
3007 | case R_ALPHA_GOTDTPREL: | |
3008 | r_type = R_ALPHA_DTPREL16; | |
3009 | break; | |
3010 | case R_ALPHA_GOTTPREL: | |
3011 | r_type = R_ALPHA_TPREL16; | |
3012 | break; | |
3013 | default: | |
3014 | BFD_ASSERT (0); | |
3015 | return FALSE; | |
3016 | } | |
3017 | } | |
252b5132 | 3018 | |
a7519a3c | 3019 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3020 | return TRUE; |
252b5132 | 3021 | |
a7519a3c RH |
3022 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3023 | info->changed_contents = TRUE; | |
252b5132 | 3024 | |
a7519a3c RH |
3025 | /* Reduce the use count on this got entry by one, possibly |
3026 | eliminating it. */ | |
3027 | if (--info->gotent->use_count == 0) | |
252b5132 | 3028 | { |
a7519a3c RH |
3029 | int sz = alpha_got_entry_size (r_type); |
3030 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3031 | if (!info->h) | |
3032 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3033 | } |
252b5132 | 3034 | |
a7519a3c RH |
3035 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3036 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3037 | info->changed_relocs = TRUE; | |
3038 | ||
3039 | /* ??? Search forward through this basic block looking for insns | |
3040 | that use the target register. Stop after an insn modifying the | |
3041 | register is seen, or after a branch or call. | |
252b5132 | 3042 | |
a7519a3c RH |
3043 | Any such memory load insn may be substituted by a load directly |
3044 | off the GP. This allows the memory load insn to be issued before | |
3045 | the calculated GP register would otherwise be ready. | |
252b5132 | 3046 | |
a7519a3c RH |
3047 | Any such jsr insn can be replaced by a bsr if it is in range. |
3048 | ||
3049 | This would mean that we'd have to _add_ relocations, the pain of | |
3050 | which gives one pause. */ | |
252b5132 | 3051 | |
b34976b6 | 3052 | return TRUE; |
252b5132 RH |
3053 | } |
3054 | ||
a7519a3c RH |
3055 | static bfd_vma |
3056 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3057 | { |
a7519a3c RH |
3058 | /* If the function has the same gp, and we can identify that the |
3059 | function does not use its function pointer, we can eliminate the | |
3060 | address load. */ | |
252b5132 | 3061 | |
a7519a3c RH |
3062 | /* If the symbol is marked NOPV, we are being told the function never |
3063 | needs its procedure value. */ | |
3064 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3065 | return symval; | |
252b5132 | 3066 | |
a7519a3c RH |
3067 | /* If the symbol is marked STD_GP, we are being told the function does |
3068 | a normal ldgp in the first two words. */ | |
3069 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3070 | ; | |
252b5132 | 3071 | |
a7519a3c RH |
3072 | /* Otherwise, we may be able to identify a GP load in the first two |
3073 | words, which we can then skip. */ | |
3074 | else | |
252b5132 | 3075 | { |
a7519a3c RH |
3076 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3077 | bfd_vma ofs; | |
252b5132 | 3078 | |
a7519a3c RH |
3079 | /* Load the relocations from the section that the target symbol is in. */ |
3080 | if (info->sec == info->tsec) | |
252b5132 | 3081 | { |
a7519a3c RH |
3082 | tsec_relocs = info->relocs; |
3083 | tsec_relend = info->relend; | |
3084 | tsec_free = NULL; | |
3085 | } | |
3086 | else | |
3087 | { | |
3088 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3089 | (info->abfd, info->tsec, (PTR) NULL, | |
3090 | (Elf_Internal_Rela *) NULL, | |
3091 | info->link_info->keep_memory)); | |
3092 | if (tsec_relocs == NULL) | |
3093 | return 0; | |
3094 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3095 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3096 | } | |
252b5132 | 3097 | |
a7519a3c RH |
3098 | /* Recover the symbol's offset within the section. */ |
3099 | ofs = (symval - info->tsec->output_section->vma | |
3100 | - info->tsec->output_offset); | |
252b5132 | 3101 | |
a7519a3c RH |
3102 | /* Look for a GPDISP reloc. */ |
3103 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3104 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3105 | |
a7519a3c RH |
3106 | if (!gpdisp || gpdisp->r_addend != 4) |
3107 | { | |
3108 | if (tsec_free) | |
3109 | free (tsec_free); | |
3110 | return 0; | |
252b5132 | 3111 | } |
a7519a3c RH |
3112 | if (tsec_free) |
3113 | free (tsec_free); | |
252b5132 RH |
3114 | } |
3115 | ||
a7519a3c RH |
3116 | /* We've now determined that we can skip an initial gp load. Verify |
3117 | that the call and the target use the same gp. */ | |
f13a99db | 3118 | if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec |
a7519a3c RH |
3119 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) |
3120 | return 0; | |
252b5132 | 3121 | |
a7519a3c RH |
3122 | return symval + 8; |
3123 | } | |
252b5132 | 3124 | |
a7519a3c RH |
3125 | static bfd_boolean |
3126 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3127 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3128 | { |
a7519a3c RH |
3129 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3130 | int flags, count, i; | |
3131 | bfd_signed_vma disp; | |
3132 | bfd_boolean fits16; | |
3133 | bfd_boolean fits32; | |
3134 | bfd_boolean lit_reused = FALSE; | |
3135 | bfd_boolean all_optimized = TRUE; | |
3136 | unsigned int lit_insn; | |
252b5132 | 3137 | |
a7519a3c RH |
3138 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3139 | if (lit_insn >> 26 != OP_LDQ) | |
3140 | { | |
3141 | ((*_bfd_error_handler) | |
3142 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3143 | info->abfd, info->sec, | |
3144 | (unsigned long) irel->r_offset)); | |
3145 | return TRUE; | |
3146 | } | |
252b5132 | 3147 | |
a7519a3c RH |
3148 | /* Can't relax dynamic symbols. */ |
3149 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3150 | return TRUE; | |
3151 | ||
3152 | /* Summarize how this particular LITERAL is used. */ | |
3153 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3154 | { |
a7519a3c RH |
3155 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3156 | break; | |
8288a39e | 3157 | if (urel->r_addend <= 6) |
a7519a3c RH |
3158 | flags |= 1 << urel->r_addend; |
3159 | } | |
252b5132 | 3160 | |
a7519a3c RH |
3161 | /* A little preparation for the loop... */ |
3162 | disp = symval - info->gp; | |
252b5132 | 3163 | |
a7519a3c RH |
3164 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3165 | { | |
3166 | unsigned int insn; | |
3167 | int insn_disp; | |
3168 | bfd_signed_vma xdisp; | |
252b5132 | 3169 | |
a7519a3c | 3170 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3171 | |
a7519a3c RH |
3172 | switch (urel->r_addend) |
3173 | { | |
3174 | case LITUSE_ALPHA_ADDR: | |
3175 | default: | |
3176 | /* This type is really just a placeholder to note that all | |
3177 | uses cannot be optimized, but to still allow some. */ | |
3178 | all_optimized = FALSE; | |
3179 | break; | |
252b5132 | 3180 | |
a7519a3c RH |
3181 | case LITUSE_ALPHA_BASE: |
3182 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3183 | |
a7519a3c RH |
3184 | /* Extract the displacement from the instruction, sign-extending |
3185 | it if necessary, then test whether it is within 16 or 32 bits | |
3186 | displacement from GP. */ | |
3187 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3188 | ||
3189 | xdisp = disp + insn_disp; | |
3190 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3191 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3192 | && xdisp < 0x7fff8000); | |
3193 | ||
3194 | if (fits16) | |
3195 | { | |
3196 | /* Take the op code and dest from this insn, take the base | |
3197 | register from the literal insn. Leave the offset alone. */ | |
3198 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3199 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3200 | R_ALPHA_GPREL16); | |
3201 | urel->r_addend = irel->r_addend; | |
3202 | info->changed_relocs = TRUE; | |
252b5132 | 3203 | |
a7519a3c RH |
3204 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3205 | info->contents + urel->r_offset); | |
3206 | info->changed_contents = TRUE; | |
252b5132 | 3207 | } |
252b5132 | 3208 | |
a7519a3c RH |
3209 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3210 | else if (fits32 && !(flags & ~6)) | |
3211 | { | |
3212 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3213 | |
a7519a3c RH |
3214 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3215 | R_ALPHA_GPRELHIGH); | |
3216 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3217 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3218 | info->contents + irel->r_offset); | |
3219 | lit_reused = TRUE; | |
3220 | info->changed_contents = TRUE; | |
252b5132 | 3221 | |
a7519a3c RH |
3222 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3223 | R_ALPHA_GPRELLOW); | |
3224 | urel->r_addend = irel->r_addend; | |
3225 | info->changed_relocs = TRUE; | |
3226 | } | |
3227 | else | |
3228 | all_optimized = FALSE; | |
3229 | break; | |
252b5132 | 3230 | |
a7519a3c RH |
3231 | case LITUSE_ALPHA_BYTOFF: |
3232 | /* We can always optimize byte instructions. */ | |
252b5132 | 3233 | |
a7519a3c RH |
3234 | /* FIXME: sanity check the insn for byte op. Check that the |
3235 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3236 | |
a7519a3c RH |
3237 | insn &= ~ (unsigned) 0x001ff000; |
3238 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3239 | |
a7519a3c RH |
3240 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3241 | urel->r_addend = 0; | |
3242 | info->changed_relocs = TRUE; | |
e92d460e | 3243 | |
a7519a3c RH |
3244 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3245 | info->contents + urel->r_offset); | |
3246 | info->changed_contents = TRUE; | |
3247 | break; | |
252b5132 | 3248 | |
a7519a3c RH |
3249 | case LITUSE_ALPHA_JSR: |
3250 | case LITUSE_ALPHA_TLSGD: | |
3251 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3252 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3253 | { |
a7519a3c RH |
3254 | bfd_vma optdest, org; |
3255 | bfd_signed_vma odisp; | |
252b5132 | 3256 | |
a7519a3c RH |
3257 | /* For undefined weak symbols, we're mostly interested in getting |
3258 | rid of the got entry whenever possible, so optimize this to a | |
3259 | use of the zero register. */ | |
3260 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3261 | { | |
3262 | insn |= 31 << 16; | |
3263 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3264 | info->contents + urel->r_offset); | |
252b5132 | 3265 | |
a7519a3c RH |
3266 | info->changed_contents = TRUE; |
3267 | break; | |
3268 | } | |
252b5132 | 3269 | |
a7519a3c RH |
3270 | /* If not zero, place to jump without needing pv. */ |
3271 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3272 | org = (info->sec->output_section->vma | |
3273 | + info->sec->output_offset | |
3274 | + urel->r_offset + 4); | |
3275 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3276 | |
a7519a3c RH |
3277 | if (odisp >= -0x400000 && odisp < 0x400000) |
3278 | { | |
3279 | Elf_Internal_Rela *xrel; | |
252b5132 | 3280 | |
a7519a3c RH |
3281 | /* Preserve branch prediction call stack when possible. */ |
3282 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3283 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3284 | else | |
3285 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3286 | |
a7519a3c RH |
3287 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3288 | R_ALPHA_BRADDR); | |
3289 | urel->r_addend = irel->r_addend; | |
252b5132 | 3290 | |
a7519a3c RH |
3291 | if (optdest) |
3292 | urel->r_addend += optdest - symval; | |
3293 | else | |
3294 | all_optimized = FALSE; | |
252b5132 | 3295 | |
a7519a3c RH |
3296 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3297 | info->contents + urel->r_offset); | |
252b5132 | 3298 | |
a7519a3c RH |
3299 | /* Kill any HINT reloc that might exist for this insn. */ |
3300 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3301 | (info->relocs, info->relend, urel->r_offset, | |
3302 | R_ALPHA_HINT)); | |
3303 | if (xrel) | |
3304 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3305 | |
a7519a3c RH |
3306 | info->changed_contents = TRUE; |
3307 | info->changed_relocs = TRUE; | |
3308 | } | |
3309 | else | |
3310 | all_optimized = FALSE; | |
252b5132 | 3311 | |
a7519a3c RH |
3312 | /* Even if the target is not in range for a direct branch, |
3313 | if we share a GP, we can eliminate the gp reload. */ | |
3314 | if (optdest) | |
3315 | { | |
3316 | Elf_Internal_Rela *gpdisp | |
3317 | = (elf64_alpha_find_reloc_at_ofs | |
3318 | (info->relocs, irelend, urel->r_offset + 4, | |
3319 | R_ALPHA_GPDISP)); | |
3320 | if (gpdisp) | |
3321 | { | |
3322 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3323 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3324 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3325 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3326 | |
a7519a3c RH |
3327 | /* Verify that the instruction is "ldah $29,0($26)". |
3328 | Consider a function that ends in a noreturn call, | |
3329 | and that the next function begins with an ldgp, | |
3330 | and that by accident there is no padding between. | |
3331 | In that case the insn would use $27 as the base. */ | |
3332 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3333 | { | |
3334 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3335 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3336 | |
a7519a3c RH |
3337 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3338 | info->changed_contents = TRUE; | |
3339 | info->changed_relocs = TRUE; | |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | } | |
3344 | break; | |
252b5132 | 3345 | } |
252b5132 RH |
3346 | } |
3347 | ||
a7519a3c RH |
3348 | /* If all cases were optimized, we can reduce the use count on this |
3349 | got entry by one, possibly eliminating it. */ | |
3350 | if (all_optimized) | |
252b5132 | 3351 | { |
a7519a3c | 3352 | if (--info->gotent->use_count == 0) |
252b5132 | 3353 | { |
a7519a3c RH |
3354 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3355 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3356 | if (!info->h) | |
3357 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3358 | } |
a7519a3c RH |
3359 | |
3360 | /* If the literal instruction is no longer needed (it may have been | |
3361 | reused. We can eliminate it. */ | |
3362 | /* ??? For now, I don't want to deal with compacting the section, | |
3363 | so just nop it out. */ | |
3364 | if (!lit_reused) | |
252b5132 | 3365 | { |
a7519a3c RH |
3366 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3367 | info->changed_relocs = TRUE; | |
252b5132 | 3368 | |
a7519a3c RH |
3369 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3370 | info->contents + irel->r_offset); | |
3371 | info->changed_contents = TRUE; | |
3372 | } | |
252b5132 | 3373 | |
a7519a3c RH |
3374 | return TRUE; |
3375 | } | |
3376 | else | |
3377 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3378 | } |
3379 | ||
b34976b6 | 3380 | static bfd_boolean |
a7519a3c RH |
3381 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3382 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3383 | { |
a7519a3c | 3384 | bfd_byte *pos[5]; |
891caa9b | 3385 | unsigned int insn, tlsgd_reg; |
a7519a3c | 3386 | Elf_Internal_Rela *gpdisp, *hint; |
891caa9b | 3387 | bfd_boolean dynamic, use_gottprel; |
a7519a3c | 3388 | unsigned long new_symndx; |
f44f99a5 | 3389 | |
a7519a3c | 3390 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3391 | |
a7519a3c RH |
3392 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3393 | to use dynamic model for it. */ | |
3394 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3395 | ; | |
f44f99a5 | 3396 | |
a7519a3c RH |
3397 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3398 | then we might as well relax to IE. */ | |
3399 | else if (info->link_info->shared && !dynamic | |
3400 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3401 | ; | |
f44f99a5 | 3402 | |
a7519a3c RH |
3403 | /* Otherwise we must be building an executable to do anything. */ |
3404 | else if (info->link_info->shared) | |
3405 | return TRUE; | |
f44f99a5 | 3406 | |
a7519a3c RH |
3407 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3408 | the matching LITUSE_TLS relocations. */ | |
3409 | if (irel + 2 >= info->relend) | |
3410 | return TRUE; | |
3411 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3412 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3413 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3414 | return TRUE; | |
f44f99a5 | 3415 | |
a7519a3c RH |
3416 | /* There must be a GPDISP relocation positioned immediately after the |
3417 | LITUSE relocation. */ | |
3418 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3419 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3420 | if (!gpdisp) | |
b34976b6 | 3421 | return TRUE; |
f44f99a5 | 3422 | |
a7519a3c RH |
3423 | pos[0] = info->contents + irel[0].r_offset; |
3424 | pos[1] = info->contents + irel[1].r_offset; | |
3425 | pos[2] = info->contents + irel[2].r_offset; | |
3426 | pos[3] = info->contents + gpdisp->r_offset; | |
3427 | pos[4] = pos[3] + gpdisp->r_addend; | |
f44f99a5 | 3428 | |
a7519a3c RH |
3429 | /* Generally, the positions are not allowed to be out of order, lest the |
3430 | modified insn sequence have different register lifetimes. We can make | |
3431 | an exception when pos 1 is adjacent to pos 0. */ | |
3432 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3433 | { |
a7519a3c RH |
3434 | bfd_byte *tmp = pos[0]; |
3435 | pos[0] = pos[1]; | |
3436 | pos[1] = tmp; | |
f44f99a5 | 3437 | } |
a7519a3c RH |
3438 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) |
3439 | return TRUE; | |
cc03ec80 | 3440 | |
a7519a3c RH |
3441 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3442 | smash the symndx when we adjust the relocations below. */ | |
3443 | { | |
3444 | struct alpha_elf_got_entry *lit_gotent; | |
3445 | struct alpha_elf_link_hash_entry *lit_h; | |
3446 | unsigned long indx; | |
f44f99a5 | 3447 | |
a7519a3c RH |
3448 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3449 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3450 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3451 | |
a7519a3c RH |
3452 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3453 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3454 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3455 | |
a7519a3c RH |
3456 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3457 | lit_gotent = lit_gotent->next) | |
3458 | if (lit_gotent->gotobj == info->gotobj | |
3459 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3460 | && lit_gotent->addend == irel[1].r_addend) | |
3461 | break; | |
3462 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3463 | |
a7519a3c RH |
3464 | if (--lit_gotent->use_count == 0) |
3465 | { | |
3466 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3467 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3468 | } | |
3469 | } | |
252b5132 | 3470 | |
a7519a3c | 3471 | /* Change |
252b5132 | 3472 | |
a7519a3c RH |
3473 | lda $16,x($gp) !tlsgd!1 |
3474 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3475 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3476 | ldah $29,0($26) !gpdisp!2 | |
3477 | lda $29,0($29) !gpdisp!2 | |
3478 | to | |
3479 | ldq $16,x($gp) !gottprel | |
3480 | unop | |
3481 | call_pal rduniq | |
3482 | addq $16,$0,$0 | |
3483 | unop | |
3484 | or the first pair to | |
3485 | lda $16,x($gp) !tprel | |
3486 | unop | |
3487 | or | |
3488 | ldah $16,x($gp) !tprelhi | |
3489 | lda $16,x($16) !tprello | |
3490 | ||
3491 | as appropriate. */ | |
3492 | ||
3493 | use_gottprel = FALSE; | |
cf35638d | 3494 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF; |
891caa9b RH |
3495 | |
3496 | /* Beware of the compiler hoisting part of the sequence out a loop | |
3497 | and adjusting the destination register for the TLSGD insn. If this | |
3498 | happens, there will be a move into $16 before the JSR insn, so only | |
3499 | transformations of the first insn pair should use this register. */ | |
3500 | tlsgd_reg = bfd_get_32 (info->abfd, pos[0]); | |
3501 | tlsgd_reg = (tlsgd_reg >> 21) & 31; | |
3502 | ||
a7519a3c | 3503 | switch (!dynamic && !info->link_info->shared) |
252b5132 | 3504 | { |
a7519a3c RH |
3505 | case 1: |
3506 | { | |
3507 | bfd_vma tp_base; | |
3508 | bfd_signed_vma disp; | |
252b5132 | 3509 | |
a7519a3c RH |
3510 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3511 | tp_base = alpha_get_tprel_base (info->link_info); | |
3512 | disp = symval - tp_base; | |
252b5132 | 3513 | |
a7519a3c RH |
3514 | if (disp >= -0x8000 && disp < 0x8000) |
3515 | { | |
891caa9b | 3516 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c RH |
3517 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3518 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3519 | |
a7519a3c RH |
3520 | irel[0].r_offset = pos[0] - info->contents; |
3521 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3522 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3523 | break; | |
3524 | } | |
3525 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3526 | && disp < (bfd_signed_vma) 0x7fff8000 | |
891caa9b | 3527 | && pos[0] + 4 == pos[1]) |
a7519a3c | 3528 | { |
891caa9b | 3529 | insn = (OP_LDAH << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c | 3530 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
891caa9b | 3531 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (tlsgd_reg << 16); |
a7519a3c | 3532 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); |
3765b1be | 3533 | |
a7519a3c RH |
3534 | irel[0].r_offset = pos[0] - info->contents; |
3535 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3536 | irel[1].r_offset = pos[1] - info->contents; | |
3537 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3538 | break; | |
3539 | } | |
3540 | } | |
3541 | /* FALLTHRU */ | |
3765b1be | 3542 | |
3765b1be | 3543 | default: |
a7519a3c RH |
3544 | use_gottprel = TRUE; |
3545 | ||
891caa9b | 3546 | insn = (OP_LDQ << 26) | (tlsgd_reg << 21) | (29 << 16); |
a7519a3c RH |
3547 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3548 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3549 | ||
3550 | irel[0].r_offset = pos[0] - info->contents; | |
3551 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3552 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3553 | break; | |
3765b1be | 3554 | } |
3765b1be | 3555 | |
a7519a3c | 3556 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3557 | |
a7519a3c RH |
3558 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3559 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3560 | |
a7519a3c | 3561 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3562 | |
a7519a3c RH |
3563 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3564 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3565 | |
a7519a3c RH |
3566 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3567 | irel[2].r_offset, R_ALPHA_HINT); | |
3568 | if (hint) | |
3569 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3570 | |
a7519a3c RH |
3571 | info->changed_contents = TRUE; |
3572 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3573 | |
a7519a3c RH |
3574 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3575 | if (--info->gotent->use_count == 0) | |
3765b1be | 3576 | { |
a7519a3c RH |
3577 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3578 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3579 | if (!info->h) | |
3580 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3581 | } |
252b5132 | 3582 | |
a7519a3c RH |
3583 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3584 | count on that got entry. */ | |
3585 | if (use_gottprel) | |
f44f99a5 | 3586 | { |
a7519a3c | 3587 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3588 | |
a7519a3c RH |
3589 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3590 | tprel_gotent = tprel_gotent->next) | |
3591 | if (tprel_gotent->gotobj == info->gotobj | |
3592 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3593 | && tprel_gotent->addend == irel->r_addend) | |
3594 | break; | |
3595 | if (tprel_gotent) | |
3596 | tprel_gotent->use_count++; | |
3597 | else | |
f44f99a5 | 3598 | { |
a7519a3c RH |
3599 | if (info->gotent->use_count == 0) |
3600 | tprel_gotent = info->gotent; | |
3601 | else | |
3602 | { | |
3603 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3604 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3605 | if (!tprel_gotent) | |
3606 | return FALSE; | |
f44f99a5 | 3607 | |
a7519a3c RH |
3608 | tprel_gotent->next = *info->first_gotent; |
3609 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3610 | |
a7519a3c RH |
3611 | tprel_gotent->gotobj = info->gotobj; |
3612 | tprel_gotent->addend = irel->r_addend; | |
3613 | tprel_gotent->got_offset = -1; | |
3614 | tprel_gotent->reloc_done = 0; | |
3615 | tprel_gotent->reloc_xlated = 0; | |
3616 | } | |
f44f99a5 | 3617 | |
a7519a3c RH |
3618 | tprel_gotent->use_count = 1; |
3619 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3620 | } | |
f44f99a5 | 3621 | } |
f44f99a5 | 3622 | |
b34976b6 | 3623 | return TRUE; |
f44f99a5 RH |
3624 | } |
3625 | ||
b34976b6 | 3626 | static bfd_boolean |
a7519a3c RH |
3627 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3628 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3629 | { |
a7519a3c RH |
3630 | Elf_Internal_Shdr *symtab_hdr; |
3631 | Elf_Internal_Rela *internal_relocs; | |
3632 | Elf_Internal_Rela *irel, *irelend; | |
3633 | Elf_Internal_Sym *isymbuf = NULL; | |
3634 | struct alpha_elf_got_entry **local_got_entries; | |
3635 | struct alpha_relax_info info; | |
4dfe6ac6 NC |
3636 | struct alpha_elf_link_hash_table * htab; |
3637 | ||
3638 | htab = alpha_elf_hash_table (link_info); | |
3639 | if (htab == NULL) | |
3640 | return FALSE; | |
f44f99a5 | 3641 | |
4a828aab | 3642 | /* There's nothing to change, yet. */ |
a7519a3c | 3643 | *again = FALSE; |
f44f99a5 | 3644 | |
a7519a3c RH |
3645 | if (link_info->relocatable |
3646 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3647 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3648 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3649 | return TRUE; |
3650 | ||
0ffa91dd NC |
3651 | BFD_ASSERT (is_alpha_elf (abfd)); |
3652 | ||
4a828aab | 3653 | /* Make sure our GOT and PLT tables are up-to-date. */ |
4dfe6ac6 | 3654 | if (htab->relax_trip != link_info->relax_trip) |
4a828aab | 3655 | { |
4dfe6ac6 | 3656 | htab->relax_trip = link_info->relax_trip; |
4a828aab RH |
3657 | |
3658 | /* This should never fail after the initial round, since the only | |
3659 | error is GOT overflow, and relaxation only shrinks the table. */ | |
3660 | if (!elf64_alpha_size_got_sections (link_info)) | |
3661 | abort (); | |
3662 | if (elf_hash_table (link_info)->dynamic_sections_created) | |
3663 | { | |
3664 | elf64_alpha_size_plt_section (link_info); | |
3665 | elf64_alpha_size_rela_got_section (link_info); | |
3666 | } | |
3667 | } | |
3668 | ||
0ffa91dd | 3669 | symtab_hdr = &elf_symtab_hdr (abfd); |
a7519a3c | 3670 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
252b5132 | 3671 | |
a7519a3c RH |
3672 | /* Load the relocations for this section. */ |
3673 | internal_relocs = (_bfd_elf_link_read_relocs | |
3674 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3675 | link_info->keep_memory)); | |
3676 | if (internal_relocs == NULL) | |
3677 | return FALSE; | |
252b5132 | 3678 | |
a7519a3c RH |
3679 | memset(&info, 0, sizeof (info)); |
3680 | info.abfd = abfd; | |
3681 | info.sec = sec; | |
3682 | info.link_info = link_info; | |
3683 | info.symtab_hdr = symtab_hdr; | |
3684 | info.relocs = internal_relocs; | |
3685 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3686 | ||
3687 | /* Find the GP for this object. Do not store the result back via | |
3688 | _bfd_set_gp_value, since this could change again before final. */ | |
3689 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3690 | if (info.gotobj) | |
3765b1be | 3691 | { |
a7519a3c RH |
3692 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3693 | info.gp = (sgot->output_section->vma | |
3694 | + sgot->output_offset | |
3695 | + 0x8000); | |
252b5132 RH |
3696 | } |
3697 | ||
a7519a3c RH |
3698 | /* Get the section contents. */ |
3699 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3700 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3701 | else | |
3702 | { | |
3703 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3704 | goto error_return; | |
3705 | } | |
252b5132 | 3706 | |
a7519a3c RH |
3707 | for (irel = internal_relocs; irel < irelend; irel++) |
3708 | { | |
3709 | bfd_vma symval; | |
3710 | struct alpha_elf_got_entry *gotent; | |
3711 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3712 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3713 | ||
3714 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3715 | switch (r_type) | |
3716 | { | |
3717 | case R_ALPHA_LITERAL: | |
3718 | case R_ALPHA_GPRELHIGH: | |
3719 | case R_ALPHA_GPRELLOW: | |
3720 | case R_ALPHA_GOTDTPREL: | |
3721 | case R_ALPHA_GOTTPREL: | |
3722 | case R_ALPHA_TLSGD: | |
3723 | break; | |
3724 | ||
3725 | case R_ALPHA_TLSLDM: | |
3726 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
cf35638d TS |
3727 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
3728 | r_symndx = STN_UNDEF; | |
a7519a3c RH |
3729 | break; |
3730 | ||
3731 | default: | |
3732 | continue; | |
3733 | } | |
3734 | ||
3735 | /* Get the value of the symbol referred to by the reloc. */ | |
3736 | if (r_symndx < symtab_hdr->sh_info) | |
3737 | { | |
3738 | /* A local symbol. */ | |
3739 | Elf_Internal_Sym *isym; | |
3740 | ||
3741 | /* Read this BFD's local symbols. */ | |
3742 | if (isymbuf == NULL) | |
3743 | { | |
3744 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3745 | if (isymbuf == NULL) | |
3746 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3747 | symtab_hdr->sh_info, 0, | |
3748 | NULL, NULL, NULL); | |
3749 | if (isymbuf == NULL) | |
3750 | goto error_return; | |
3751 | } | |
252b5132 | 3752 | |
a7519a3c | 3753 | isym = isymbuf + r_symndx; |
252b5132 | 3754 | |
a7519a3c RH |
3755 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3756 | means forcing the symbol value to the tp base. */ | |
3757 | if (r_type == R_ALPHA_TLSLDM) | |
3758 | { | |
3759 | info.tsec = bfd_abs_section_ptr; | |
3760 | symval = alpha_get_tprel_base (info.link_info); | |
3761 | } | |
3762 | else | |
3763 | { | |
3764 | symval = isym->st_value; | |
3765 | if (isym->st_shndx == SHN_UNDEF) | |
3766 | continue; | |
3767 | else if (isym->st_shndx == SHN_ABS) | |
3768 | info.tsec = bfd_abs_section_ptr; | |
3769 | else if (isym->st_shndx == SHN_COMMON) | |
3770 | info.tsec = bfd_com_section_ptr; | |
3771 | else | |
3772 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3773 | } | |
252b5132 | 3774 | |
a7519a3c RH |
3775 | info.h = NULL; |
3776 | info.other = isym->st_other; | |
3777 | if (local_got_entries) | |
3778 | info.first_gotent = &local_got_entries[r_symndx]; | |
3779 | else | |
3780 | { | |
3781 | info.first_gotent = &info.gotent; | |
3782 | info.gotent = NULL; | |
3783 | } | |
252b5132 | 3784 | } |
a7519a3c RH |
3785 | else |
3786 | { | |
3787 | unsigned long indx; | |
3788 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3789 | |
a7519a3c RH |
3790 | indx = r_symndx - symtab_hdr->sh_info; |
3791 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3792 | BFD_ASSERT (h != NULL); | |
252b5132 | 3793 | |
a7519a3c RH |
3794 | while (h->root.root.type == bfd_link_hash_indirect |
3795 | || h->root.root.type == bfd_link_hash_warning) | |
3796 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3797 | |
a7519a3c RH |
3798 | /* If the symbol is undefined, we can't do anything with it. */ |
3799 | if (h->root.root.type == bfd_link_hash_undefined) | |
3800 | continue; | |
252b5132 | 3801 | |
a7519a3c RH |
3802 | /* If the symbol isn't defined in the current module, |
3803 | again we can't do anything. */ | |
3804 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3805 | { | |
3806 | info.tsec = bfd_abs_section_ptr; | |
3807 | symval = 0; | |
3808 | } | |
3809 | else if (!h->root.def_regular) | |
3810 | { | |
3811 | /* Except for TLSGD relocs, which can sometimes be | |
3812 | relaxed to GOTTPREL relocs. */ | |
3813 | if (r_type != R_ALPHA_TLSGD) | |
3814 | continue; | |
3815 | info.tsec = bfd_abs_section_ptr; | |
3816 | symval = 0; | |
3817 | } | |
3818 | else | |
3819 | { | |
3820 | info.tsec = h->root.root.u.def.section; | |
3821 | symval = h->root.root.u.def.value; | |
3822 | } | |
252b5132 | 3823 | |
a7519a3c RH |
3824 | info.h = h; |
3825 | info.other = h->root.other; | |
3826 | info.first_gotent = &h->got_entries; | |
3827 | } | |
252b5132 | 3828 | |
a7519a3c RH |
3829 | /* Search for the got entry to be used by this relocation. */ |
3830 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3831 | if (gotent->gotobj == info.gotobj | |
3832 | && gotent->reloc_type == r_type | |
3833 | && gotent->addend == irel->r_addend) | |
3834 | break; | |
3835 | info.gotent = gotent; | |
252b5132 | 3836 | |
a7519a3c RH |
3837 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3838 | symval += irel->r_addend; | |
252b5132 | 3839 | |
a7519a3c | 3840 | switch (r_type) |
252b5132 | 3841 | { |
a7519a3c RH |
3842 | case R_ALPHA_LITERAL: |
3843 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3844 | |
a7519a3c RH |
3845 | /* If there exist LITUSE relocations immediately following, this |
3846 | opens up all sorts of interesting optimizations, because we | |
3847 | now know every location that this address load is used. */ | |
3848 | if (irel+1 < irelend | |
3849 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3850 | { |
a7519a3c RH |
3851 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3852 | goto error_return; | |
252b5132 | 3853 | } |
a7519a3c RH |
3854 | else |
3855 | { | |
3856 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3857 | goto error_return; | |
3858 | } | |
3859 | break; | |
252b5132 | 3860 | |
a7519a3c RH |
3861 | case R_ALPHA_GOTDTPREL: |
3862 | case R_ALPHA_GOTTPREL: | |
3863 | BFD_ASSERT(info.gotent != NULL); | |
3864 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3865 | goto error_return; | |
3866 | break; | |
3867 | ||
3868 | case R_ALPHA_TLSGD: | |
3869 | case R_ALPHA_TLSLDM: | |
3870 | BFD_ASSERT(info.gotent != NULL); | |
3871 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3872 | r_type == R_ALPHA_TLSGD)) | |
3873 | goto error_return; | |
3874 | break; | |
252b5132 RH |
3875 | } |
3876 | } | |
3877 | ||
a7519a3c RH |
3878 | if (isymbuf != NULL |
3879 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3880 | { | |
3881 | if (!link_info->keep_memory) | |
3882 | free (isymbuf); | |
3883 | else | |
252b5132 | 3884 | { |
a7519a3c RH |
3885 | /* Cache the symbols for elf_link_input_bfd. */ |
3886 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3887 | } |
a7519a3c | 3888 | } |
252b5132 | 3889 | |
a7519a3c RH |
3890 | if (info.contents != NULL |
3891 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3892 | { | |
3893 | if (!info.changed_contents && !link_info->keep_memory) | |
3894 | free (info.contents); | |
3895 | else | |
252b5132 | 3896 | { |
a7519a3c RH |
3897 | /* Cache the section contents for elf_link_input_bfd. */ |
3898 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3899 | } |
a7519a3c | 3900 | } |
252b5132 | 3901 | |
a7519a3c RH |
3902 | if (elf_section_data (sec)->relocs != internal_relocs) |
3903 | { | |
3904 | if (!info.changed_relocs) | |
3905 | free (internal_relocs); | |
3906 | else | |
3907 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3908 | } |
a7519a3c RH |
3909 | |
3910 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3911 | |
b34976b6 | 3912 | return TRUE; |
252b5132 | 3913 | |
a7519a3c RH |
3914 | error_return: |
3915 | if (isymbuf != NULL | |
3916 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3917 | free (isymbuf); | |
3918 | if (info.contents != NULL | |
3919 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3920 | free (info.contents); | |
3921 | if (internal_relocs != NULL | |
3922 | && elf_section_data (sec)->relocs != internal_relocs) | |
3923 | free (internal_relocs); | |
3924 | return FALSE; | |
3925 | } | |
3926 | \f | |
1bbc9cec RH |
3927 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3928 | into the next available slot in SREL. */ | |
3929 | ||
3930 | static void | |
a7519a3c RH |
3931 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3932 | asection *sec, asection *srel, bfd_vma offset, | |
3933 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3934 | { |
3935 | Elf_Internal_Rela outrel; | |
3936 | bfd_byte *loc; | |
3937 | ||
3938 | BFD_ASSERT (srel != NULL); | |
3939 | ||
3940 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3941 | outrel.r_addend = addend; | |
3942 | ||
3943 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3944 | if ((offset | 1) != (bfd_vma) -1) | |
3945 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3946 | else | |
3947 | memset (&outrel, 0, sizeof (outrel)); | |
3948 | ||
3949 | loc = srel->contents; | |
3950 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3951 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3952 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3953 | } |
3954 | ||
4a67a098 RH |
3955 | /* Relocate an Alpha ELF section for a relocatable link. |
3956 | ||
3957 | We don't have to change anything unless the reloc is against a section | |
3958 | symbol, in which case we have to adjust according to where the section | |
3959 | symbol winds up in the output section. */ | |
3960 | ||
b34976b6 | 3961 | static bfd_boolean |
a7519a3c RH |
3962 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3963 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3964 | bfd *input_bfd, asection *input_section, | |
3965 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3966 | Elf_Internal_Rela *relocs, | |
3967 | Elf_Internal_Sym *local_syms, | |
3968 | asection **local_sections) | |
4a67a098 RH |
3969 | { |
3970 | unsigned long symtab_hdr_sh_info; | |
3971 | Elf_Internal_Rela *rel; | |
3972 | Elf_Internal_Rela *relend; | |
ab96bf03 | 3973 | struct elf_link_hash_entry **sym_hashes; |
b34976b6 | 3974 | bfd_boolean ret_val = TRUE; |
4a67a098 | 3975 | |
0ffa91dd | 3976 | symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info; |
ab96bf03 | 3977 | sym_hashes = elf_sym_hashes (input_bfd); |
4a67a098 RH |
3978 | |
3979 | relend = relocs + input_section->reloc_count; | |
3980 | for (rel = relocs; rel < relend; rel++) | |
3981 | { | |
3982 | unsigned long r_symndx; | |
3983 | Elf_Internal_Sym *sym; | |
3984 | asection *sec; | |
3985 | unsigned long r_type; | |
3986 | ||
ab96bf03 | 3987 | r_type = ELF64_R_TYPE (rel->r_info); |
4a67a098 RH |
3988 | if (r_type >= R_ALPHA_max) |
3989 | { | |
3990 | (*_bfd_error_handler) | |
d003868e AM |
3991 | (_("%B: unknown relocation type %d"), |
3992 | input_bfd, (int) r_type); | |
4a67a098 | 3993 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3994 | ret_val = FALSE; |
4a67a098 RH |
3995 | continue; |
3996 | } | |
3997 | ||
4a67a098 RH |
3998 | /* The symbol associated with GPDISP and LITUSE is |
3999 | immaterial. Only the addend is significant. */ | |
4000 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4001 | continue; | |
4002 | ||
ab96bf03 | 4003 | r_symndx = ELF64_R_SYM (rel->r_info); |
4a67a098 RH |
4004 | if (r_symndx < symtab_hdr_sh_info) |
4005 | { | |
4006 | sym = local_syms + r_symndx; | |
ab96bf03 | 4007 | sec = local_sections[r_symndx]; |
4a67a098 | 4008 | } |
ab96bf03 AM |
4009 | else |
4010 | { | |
4011 | struct elf_link_hash_entry *h; | |
4012 | ||
4013 | h = sym_hashes[r_symndx - symtab_hdr_sh_info]; | |
4014 | ||
4015 | while (h->root.type == bfd_link_hash_indirect | |
4016 | || h->root.type == bfd_link_hash_warning) | |
4017 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4018 | ||
4019 | if (h->root.type != bfd_link_hash_defined | |
4020 | && h->root.type != bfd_link_hash_defweak) | |
4021 | continue; | |
4022 | ||
4023 | sym = NULL; | |
4024 | sec = h->root.u.def.section; | |
4025 | } | |
4026 | ||
4027 | if (sec != NULL && elf_discarded_section (sec)) | |
e4067dbb DJ |
4028 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
4029 | rel, relend, | |
4030 | elf64_alpha_howto_table + r_type, | |
4031 | contents); | |
ab96bf03 AM |
4032 | |
4033 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4034 | rel->r_addend += sec->output_offset; | |
4a67a098 RH |
4035 | } |
4036 | ||
4037 | return ret_val; | |
4038 | } | |
4039 | ||
252b5132 RH |
4040 | /* Relocate an Alpha ELF section. */ |
4041 | ||
b34976b6 | 4042 | static bfd_boolean |
a7519a3c RH |
4043 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
4044 | bfd *input_bfd, asection *input_section, | |
4045 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
4046 | Elf_Internal_Sym *local_syms, | |
4047 | asection **local_sections) | |
252b5132 | 4048 | { |
4a67a098 | 4049 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4050 | Elf_Internal_Rela *rel; |
4051 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4052 | asection *sgot, *srel, *srelgot; |
4053 | bfd *dynobj, *gotobj; | |
4054 | bfd_vma gp, tp_base, dtp_base; | |
4055 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4056 | bfd_boolean ret_val; |
252b5132 | 4057 | |
0ffa91dd NC |
4058 | BFD_ASSERT (is_alpha_elf (input_bfd)); |
4059 | ||
4a67a098 | 4060 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 4061 | if (info->relocatable) |
4a67a098 RH |
4062 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4063 | input_section, contents, relocs, | |
4064 | local_syms, local_sections); | |
4065 | ||
4066 | /* This is a final link. */ | |
4067 | ||
b34976b6 | 4068 | ret_val = TRUE; |
252b5132 | 4069 | |
0ffa91dd | 4070 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
3765b1be | 4071 | |
4a67a098 RH |
4072 | dynobj = elf_hash_table (info)->dynobj; |
4073 | if (dynobj) | |
4074 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4075 | else | |
4076 | srelgot = NULL; | |
4077 | ||
3241278a RH |
4078 | if (input_section->flags & SEC_ALLOC) |
4079 | { | |
4080 | const char *section_name; | |
4081 | section_name = (bfd_elf_string_from_elf_section | |
4082 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
d4730f92 | 4083 | _bfd_elf_single_rel_hdr (input_section)->sh_name)); |
3241278a RH |
4084 | BFD_ASSERT(section_name != NULL); |
4085 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4086 | } | |
4087 | else | |
4088 | srel = NULL; | |
3765b1be | 4089 | |
4a67a098 RH |
4090 | /* Find the gp value for this input bfd. */ |
4091 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4092 | if (gotobj) | |
4093 | { | |
4094 | sgot = alpha_elf_tdata (gotobj)->got; | |
4095 | gp = _bfd_get_gp_value (gotobj); | |
4096 | if (gp == 0) | |
252b5132 | 4097 | { |
4a67a098 RH |
4098 | gp = (sgot->output_section->vma |
4099 | + sgot->output_offset | |
4100 | + 0x8000); | |
4101 | _bfd_set_gp_value (gotobj, gp); | |
4102 | } | |
4103 | } | |
4104 | else | |
4105 | { | |
4106 | sgot = NULL; | |
4107 | gp = 0; | |
4108 | } | |
3765b1be | 4109 | |
4a67a098 RH |
4110 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4111 | ||
e1918d23 | 4112 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4113 | { |
e1918d23 AM |
4114 | dtp_base = alpha_get_dtprel_base (info); |
4115 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4116 | } |
4a67a098 RH |
4117 | else |
4118 | dtp_base = tp_base = 0; | |
252b5132 | 4119 | |
252b5132 | 4120 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4121 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4122 | { |
4a67a098 | 4123 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4124 | struct alpha_elf_got_entry *gotent; |
4125 | bfd_reloc_status_type r; | |
252b5132 RH |
4126 | reloc_howto_type *howto; |
4127 | unsigned long r_symndx; | |
4a67a098 RH |
4128 | Elf_Internal_Sym *sym = NULL; |
4129 | asection *sec = NULL; | |
3765b1be | 4130 | bfd_vma value; |
dc810e39 | 4131 | bfd_vma addend; |
b34976b6 AM |
4132 | bfd_boolean dynamic_symbol_p; |
4133 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4134 | unsigned long r_type; |
252b5132 RH |
4135 | |
4136 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4137 | if (r_type >= R_ALPHA_max) |
252b5132 | 4138 | { |
3765b1be | 4139 | (*_bfd_error_handler) |
d003868e AM |
4140 | (_("%B: unknown relocation type %d"), |
4141 | input_bfd, (int) r_type); | |
252b5132 | 4142 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4143 | ret_val = FALSE; |
3765b1be | 4144 | continue; |
252b5132 | 4145 | } |
252b5132 | 4146 | |
3765b1be | 4147 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4148 | r_symndx = ELF64_R_SYM(rel->r_info); |
4149 | ||
cc03ec80 | 4150 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d | 4151 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
cc03ec80 | 4152 | if (r_type == R_ALPHA_TLSLDM) |
cf35638d | 4153 | r_symndx = STN_UNDEF; |
cc03ec80 | 4154 | |
252b5132 RH |
4155 | if (r_symndx < symtab_hdr->sh_info) |
4156 | { | |
8517fae7 | 4157 | asection *msec; |
252b5132 RH |
4158 | sym = local_syms + r_symndx; |
4159 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4160 | msec = sec; |
4161 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4162 | |
cf35638d | 4163 | /* If this is a tp-relative relocation against sym STN_UNDEF (0), |
cc03ec80 | 4164 | this is hackery from relax_section. Force the value to |
f915360b | 4165 | be the tls module base. */ |
cf35638d | 4166 | if (r_symndx == STN_UNDEF |
cc03ec80 RH |
4167 | && (r_type == R_ALPHA_TLSLDM |
4168 | || r_type == R_ALPHA_GOTTPREL | |
4169 | || r_type == R_ALPHA_TPREL64 | |
4170 | || r_type == R_ALPHA_TPRELHI | |
4171 | || r_type == R_ALPHA_TPRELLO | |
4172 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4173 | value = dtp_base; |
cc03ec80 | 4174 | |
4a67a098 RH |
4175 | if (local_got_entries) |
4176 | gotent = local_got_entries[r_symndx]; | |
4177 | else | |
4178 | gotent = NULL; | |
3765b1be RH |
4179 | |
4180 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4181 | unless it has been done already. */ | |
4182 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4183 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4184 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4185 | && gotent |
4186 | && !gotent->reloc_xlated) | |
3765b1be RH |
4187 | { |
4188 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4189 | |
4190 | for (ent = gotent; ent; ent = ent->next) | |
4191 | { | |
4192 | ent->reloc_xlated = 1; | |
4193 | if (ent->use_count == 0) | |
4194 | continue; | |
4195 | msec = sec; | |
4196 | ent->addend = | |
4197 | _bfd_merged_section_offset (output_bfd, &msec, | |
4198 | elf_section_data (sec)-> | |
4199 | sec_info, | |
753731ee | 4200 | sym->st_value + ent->addend); |
3765b1be RH |
4201 | ent->addend -= sym->st_value; |
4202 | ent->addend += msec->output_section->vma | |
4203 | + msec->output_offset | |
4204 | - sec->output_section->vma | |
4205 | - sec->output_offset; | |
4206 | } | |
4207 | } | |
4208 | ||
b34976b6 | 4209 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4210 | } |
4211 | else | |
4212 | { | |
560e09e9 NC |
4213 | bfd_boolean warned; |
4214 | bfd_boolean unresolved_reloc; | |
4215 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4216 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4217 | ||
4218 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4219 | r_symndx, symtab_hdr, sym_hashes, | |
4220 | hh, sec, value, | |
4221 | unresolved_reloc, warned); | |
560e09e9 NC |
4222 | |
4223 | if (warned) | |
4224 | continue; | |
252b5132 | 4225 | |
560e09e9 NC |
4226 | if (value == 0 |
4227 | && ! unresolved_reloc | |
4228 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4229 | undef_weak_ref = TRUE; |
3765b1be | 4230 | |
560e09e9 | 4231 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4232 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4233 | gotent = h->got_entries; | |
252b5132 | 4234 | } |
3765b1be | 4235 | |
ab96bf03 | 4236 | if (sec != NULL && elf_discarded_section (sec)) |
e4067dbb DJ |
4237 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
4238 | rel, relend, howto, contents); | |
ab96bf03 | 4239 | |
252b5132 | 4240 | addend = rel->r_addend; |
3765b1be RH |
4241 | value += addend; |
4242 | ||
4243 | /* Search for the proper got entry. */ | |
4244 | for (; gotent ; gotent = gotent->next) | |
4245 | if (gotent->gotobj == gotobj | |
4246 | && gotent->reloc_type == r_type | |
4247 | && gotent->addend == addend) | |
4248 | break; | |
252b5132 RH |
4249 | |
4250 | switch (r_type) | |
4251 | { | |
4252 | case R_ALPHA_GPDISP: | |
4253 | { | |
4254 | bfd_byte *p_ldah, *p_lda; | |
4255 | ||
4256 | BFD_ASSERT(gp != 0); | |
4257 | ||
3765b1be RH |
4258 | value = (input_section->output_section->vma |
4259 | + input_section->output_offset | |
4260 | + rel->r_offset); | |
252b5132 | 4261 | |
3765b1be | 4262 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4263 | p_lda = p_ldah + rel->r_addend; |
4264 | ||
3765b1be | 4265 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4266 | p_ldah, p_lda); |
4267 | } | |
4268 | break; | |
4269 | ||
252b5132 | 4270 | case R_ALPHA_LITERAL: |
3765b1be RH |
4271 | BFD_ASSERT(sgot != NULL); |
4272 | BFD_ASSERT(gp != 0); | |
4273 | BFD_ASSERT(gotent != NULL); | |
4274 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4275 | |
3765b1be RH |
4276 | if (!gotent->reloc_done) |
4277 | { | |
4278 | gotent->reloc_done = 1; | |
252b5132 | 4279 | |
3765b1be RH |
4280 | bfd_put_64 (output_bfd, value, |
4281 | sgot->contents + gotent->got_offset); | |
252b5132 | 4282 | |
3765b1be RH |
4283 | /* If the symbol has been forced local, output a |
4284 | RELATIVE reloc, otherwise it will be handled in | |
4285 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4286 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4287 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4288 | gotent->got_offset, 0, | |
4289 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4290 | } |
252b5132 | 4291 | |
3765b1be RH |
4292 | value = (sgot->output_section->vma |
4293 | + sgot->output_offset | |
4294 | + gotent->got_offset); | |
4295 | value -= gp; | |
252b5132 RH |
4296 | goto default_reloc; |
4297 | ||
4298 | case R_ALPHA_GPREL32: | |
ec1659c8 | 4299 | case R_ALPHA_GPREL16: |
252b5132 | 4300 | case R_ALPHA_GPRELLOW: |
3765b1be | 4301 | if (dynamic_symbol_p) |
f16fbd61 RH |
4302 | { |
4303 | (*_bfd_error_handler) | |
d003868e AM |
4304 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4305 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4306 | ret_val = FALSE; |
f16fbd61 | 4307 | } |
252b5132 | 4308 | BFD_ASSERT(gp != 0); |
3765b1be | 4309 | value -= gp; |
252b5132 RH |
4310 | goto default_reloc; |
4311 | ||
4312 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4313 | if (dynamic_symbol_p) |
f16fbd61 RH |
4314 | { |
4315 | (*_bfd_error_handler) | |
d003868e AM |
4316 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4317 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4318 | ret_val = FALSE; |
f16fbd61 | 4319 | } |
252b5132 | 4320 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4321 | value -= gp; |
4322 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4323 | goto default_reloc; |
4324 | ||
252b5132 | 4325 | case R_ALPHA_HINT: |
f94952df RH |
4326 | /* A call to a dynamic symbol is definitely out of range of |
4327 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4328 | if (dynamic_symbol_p) |
f94952df RH |
4329 | { |
4330 | r = bfd_reloc_ok; | |
4331 | break; | |
4332 | } | |
3765b1be RH |
4333 | /* The regular PC-relative stuff measures from the start of |
4334 | the instruction rather than the end. */ | |
4335 | value -= 4; | |
4336 | goto default_reloc; | |
f94952df RH |
4337 | |
4338 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4339 | if (dynamic_symbol_p) |
4340 | { | |
4341 | (*_bfd_error_handler) | |
d003868e AM |
4342 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4343 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4344 | ret_val = FALSE; |
3765b1be | 4345 | } |
252b5132 RH |
4346 | /* The regular PC-relative stuff measures from the start of |
4347 | the instruction rather than the end. */ | |
3765b1be | 4348 | value -= 4; |
252b5132 RH |
4349 | goto default_reloc; |
4350 | ||
7793f4d0 RH |
4351 | case R_ALPHA_BRSGP: |
4352 | { | |
4353 | int other; | |
4354 | const char *name; | |
4355 | ||
4356 | /* The regular PC-relative stuff measures from the start of | |
4357 | the instruction rather than the end. */ | |
3765b1be | 4358 | value -= 4; |
7793f4d0 | 4359 | |
ccf00ab6 RH |
4360 | /* The source and destination gp must be the same. Note that |
4361 | the source will always have an assigned gp, since we forced | |
4362 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4363 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4364 | care not to crash if H is an undefined symbol. */ |
4365 | if (h != NULL && sec != NULL | |
4366 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4367 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4368 | { | |
7793f4d0 | 4369 | (*_bfd_error_handler) |
d003868e AM |
4370 | (_("%B: change in gp: BRSGP %s"), |
4371 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4372 | ret_val = FALSE; |
7793f4d0 RH |
4373 | } |
4374 | ||
4375 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4376 | if (h != NULL) | |
4377 | other = h->root.other; | |
4378 | else | |
4379 | other = sym->st_other; | |
4380 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4381 | { | |
4382 | case STO_ALPHA_NOPV: | |
4383 | break; | |
4384 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4385 | value += 8; |
7793f4d0 RH |
4386 | break; |
4387 | default: | |
4388 | if (h != NULL) | |
4389 | name = h->root.root.root.string; | |
4390 | else | |
4391 | { | |
4392 | name = (bfd_elf_string_from_elf_section | |
4393 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4394 | if (name == NULL) | |
4395 | name = _("<unknown>"); | |
4396 | else if (name[0] == 0) | |
4397 | name = bfd_section_name (input_bfd, sec); | |
4398 | } | |
4399 | (*_bfd_error_handler) | |
d003868e AM |
4400 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4401 | input_bfd, name); | |
b34976b6 | 4402 | ret_val = FALSE; |
7793f4d0 RH |
4403 | break; |
4404 | } | |
4405 | ||
4406 | goto default_reloc; | |
4407 | } | |
4408 | ||
252b5132 RH |
4409 | case R_ALPHA_REFLONG: |
4410 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4411 | case R_ALPHA_DTPREL64: |
4412 | case R_ALPHA_TPREL64: | |
252b5132 | 4413 | { |
1bbc9cec RH |
4414 | long dynindx, dyntype = r_type; |
4415 | bfd_vma dynaddend; | |
252b5132 RH |
4416 | |
4417 | /* Careful here to remember RELATIVE relocations for global | |
4418 | variables for symbolic shared objects. */ | |
4419 | ||
3765b1be | 4420 | if (dynamic_symbol_p) |
252b5132 RH |
4421 | { |
4422 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4423 | dynindx = h->root.dynindx; |
4424 | dynaddend = addend; | |
3765b1be RH |
4425 | addend = 0, value = 0; |
4426 | } | |
4427 | else if (r_type == R_ALPHA_DTPREL64) | |
4428 | { | |
e1918d23 | 4429 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4430 | value -= dtp_base; |
4431 | goto default_reloc; | |
4432 | } | |
4433 | else if (r_type == R_ALPHA_TPREL64) | |
4434 | { | |
e1918d23 | 4435 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4436 | if (!info->shared) |
4437 | { | |
4438 | value -= tp_base; | |
4439 | goto default_reloc; | |
4440 | } | |
4441 | dynindx = 0; | |
4442 | dynaddend = value - dtp_base; | |
252b5132 | 4443 | } |
ec338859 | 4444 | else if (info->shared |
cf35638d | 4445 | && r_symndx != STN_UNDEF |
d6ad34f6 RH |
4446 | && (input_section->flags & SEC_ALLOC) |
4447 | && !undef_weak_ref) | |
252b5132 | 4448 | { |
3765b1be RH |
4449 | if (r_type == R_ALPHA_REFLONG) |
4450 | { | |
4451 | (*_bfd_error_handler) | |
d003868e AM |
4452 | (_("%B: unhandled dynamic relocation against %s"), |
4453 | input_bfd, | |
3765b1be | 4454 | h->root.root.root.string); |
b34976b6 | 4455 | ret_val = FALSE; |
3765b1be | 4456 | } |
1bbc9cec RH |
4457 | dynindx = 0; |
4458 | dyntype = R_ALPHA_RELATIVE; | |
4459 | dynaddend = value; | |
252b5132 RH |
4460 | } |
4461 | else | |
4462 | goto default_reloc; | |
4463 | ||
3241278a RH |
4464 | if (input_section->flags & SEC_ALLOC) |
4465 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4466 | srel, rel->r_offset, dynindx, | |
4467 | dyntype, dynaddend); | |
252b5132 RH |
4468 | } |
4469 | goto default_reloc; | |
4470 | ||
3765b1be | 4471 | case R_ALPHA_SREL16: |
84de6048 RH |
4472 | case R_ALPHA_SREL32: |
4473 | case R_ALPHA_SREL64: | |
3765b1be RH |
4474 | if (dynamic_symbol_p) |
4475 | { | |
4476 | (*_bfd_error_handler) | |
d003868e AM |
4477 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4478 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4479 | ret_val = FALSE; |
3765b1be | 4480 | } |
d6ad34f6 RH |
4481 | else if ((info->shared || info->pie) && undef_weak_ref) |
4482 | { | |
4483 | (*_bfd_error_handler) | |
4484 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4485 | input_bfd, h->root.root.root.string); | |
4486 | ret_val = FALSE; | |
4487 | } | |
4488 | ||
3765b1be | 4489 | |
84de6048 RH |
4490 | /* ??? .eh_frame references to discarded sections will be smashed |
4491 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4492 | NULL to be encoded as 0 in any format, so this works here. */ | |
cf35638d | 4493 | if (r_symndx == STN_UNDEF) |
84de6048 RH |
4494 | howto = (elf64_alpha_howto_table |
4495 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4496 | goto default_reloc; | |
4497 | ||
3765b1be RH |
4498 | case R_ALPHA_TLSLDM: |
4499 | /* Ignore the symbol for the relocation. The result is always | |
4500 | the current module. */ | |
4501 | dynamic_symbol_p = 0; | |
4502 | /* FALLTHRU */ | |
4503 | ||
4504 | case R_ALPHA_TLSGD: | |
4505 | if (!gotent->reloc_done) | |
4506 | { | |
4507 | gotent->reloc_done = 1; | |
4508 | ||
4509 | /* Note that the module index for the main program is 1. */ | |
4510 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4511 | sgot->contents + gotent->got_offset); | |
4512 | ||
4513 | /* If the symbol has been forced local, output a | |
4514 | DTPMOD64 reloc, otherwise it will be handled in | |
4515 | finish_dynamic_symbol. */ | |
4516 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4517 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4518 | gotent->got_offset, 0, | |
4519 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4520 | |
4521 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4522 | value = 0; | |
4523 | else | |
4524 | { | |
e1918d23 | 4525 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4526 | value -= dtp_base; |
4527 | } | |
4528 | bfd_put_64 (output_bfd, value, | |
4529 | sgot->contents + gotent->got_offset + 8); | |
4530 | } | |
4531 | ||
4532 | value = (sgot->output_section->vma | |
4533 | + sgot->output_offset | |
4534 | + gotent->got_offset); | |
4535 | value -= gp; | |
4536 | goto default_reloc; | |
4537 | ||
4538 | case R_ALPHA_DTPRELHI: | |
4539 | case R_ALPHA_DTPRELLO: | |
4540 | case R_ALPHA_DTPREL16: | |
4541 | if (dynamic_symbol_p) | |
4542 | { | |
4543 | (*_bfd_error_handler) | |
d003868e AM |
4544 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4545 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4546 | ret_val = FALSE; |
3765b1be | 4547 | } |
e1918d23 | 4548 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4549 | value -= dtp_base; |
9e756d64 RH |
4550 | if (r_type == R_ALPHA_DTPRELHI) |
4551 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4552 | goto default_reloc; |
4553 | ||
4554 | case R_ALPHA_TPRELHI: | |
4555 | case R_ALPHA_TPRELLO: | |
4556 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4557 | if (info->shared) |
4558 | { | |
4559 | (*_bfd_error_handler) | |
d003868e AM |
4560 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4561 | input_bfd); | |
b34976b6 | 4562 | ret_val = FALSE; |
9e756d64 RH |
4563 | } |
4564 | else if (dynamic_symbol_p) | |
3765b1be RH |
4565 | { |
4566 | (*_bfd_error_handler) | |
d003868e AM |
4567 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4568 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4569 | ret_val = FALSE; |
3765b1be | 4570 | } |
e1918d23 | 4571 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4572 | value -= tp_base; |
9e756d64 RH |
4573 | if (r_type == R_ALPHA_TPRELHI) |
4574 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4575 | goto default_reloc; |
4576 | ||
4577 | case R_ALPHA_GOTDTPREL: | |
4578 | case R_ALPHA_GOTTPREL: | |
4579 | BFD_ASSERT(sgot != NULL); | |
4580 | BFD_ASSERT(gp != 0); | |
4581 | BFD_ASSERT(gotent != NULL); | |
4582 | BFD_ASSERT(gotent->use_count >= 1); | |
4583 | ||
4584 | if (!gotent->reloc_done) | |
4585 | { | |
4586 | gotent->reloc_done = 1; | |
4587 | ||
4588 | if (dynamic_symbol_p) | |
4589 | value = 0; | |
4590 | else | |
4591 | { | |
e1918d23 | 4592 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4593 | if (r_type == R_ALPHA_GOTDTPREL) |
4594 | value -= dtp_base; | |
4595 | else if (!info->shared) | |
4596 | value -= tp_base; | |
4597 | else | |
4598 | { | |
4599 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4600 | gotent->got_offset, 0, | |
4601 | R_ALPHA_TPREL64, | |
4602 | value - dtp_base); | |
4603 | value = 0; | |
4604 | } | |
3765b1be RH |
4605 | } |
4606 | bfd_put_64 (output_bfd, value, | |
4607 | sgot->contents + gotent->got_offset); | |
4608 | } | |
4609 | ||
4610 | value = (sgot->output_section->vma | |
4611 | + sgot->output_offset | |
4612 | + gotent->got_offset); | |
4613 | value -= gp; | |
4614 | goto default_reloc; | |
4615 | ||
252b5132 RH |
4616 | default: |
4617 | default_reloc: | |
4618 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4619 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4620 | break; |
4621 | } | |
4622 | ||
4623 | switch (r) | |
4624 | { | |
4625 | case bfd_reloc_ok: | |
4626 | break; | |
4627 | ||
4628 | case bfd_reloc_overflow: | |
4629 | { | |
4630 | const char *name; | |
4631 | ||
ed4de5e2 JJ |
4632 | /* Don't warn if the overflow is due to pc relative reloc |
4633 | against discarded section. Section optimization code should | |
4634 | handle it. */ | |
4635 | ||
4636 | if (r_symndx < symtab_hdr->sh_info | |
4637 | && sec != NULL && howto->pc_relative | |
4638 | && elf_discarded_section (sec)) | |
4639 | break; | |
4640 | ||
252b5132 | 4641 | if (h != NULL) |
dfeffb9f | 4642 | name = NULL; |
252b5132 RH |
4643 | else |
4644 | { | |
4645 | name = (bfd_elf_string_from_elf_section | |
4646 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4647 | if (name == NULL) | |
b34976b6 | 4648 | return FALSE; |
252b5132 RH |
4649 | if (*name == '\0') |
4650 | name = bfd_section_name (input_bfd, sec); | |
4651 | } | |
4652 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4653 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4654 | (bfd_vma) 0, input_bfd, input_section, | |
4655 | rel->r_offset))) | |
b34976b6 | 4656 | ret_val = FALSE; |
252b5132 RH |
4657 | } |
4658 | break; | |
4659 | ||
4660 | default: | |
4661 | case bfd_reloc_outofrange: | |
4662 | abort (); | |
4663 | } | |
4664 | } | |
4665 | ||
f16fbd61 | 4666 | return ret_val; |
252b5132 RH |
4667 | } |
4668 | ||
4669 | /* Finish up dynamic symbol handling. We set the contents of various | |
4670 | dynamic sections here. */ | |
4671 | ||
b34976b6 | 4672 | static bfd_boolean |
a7519a3c RH |
4673 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4674 | struct elf_link_hash_entry *h, | |
4675 | Elf_Internal_Sym *sym) | |
252b5132 | 4676 | { |
6ec7057a | 4677 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 RH |
4678 | bfd *dynobj = elf_hash_table(info)->dynobj; |
4679 | ||
6ec7057a | 4680 | if (h->needs_plt) |
252b5132 RH |
4681 | { |
4682 | /* Fill in the .plt entry for this symbol. */ | |
4683 | asection *splt, *sgot, *srel; | |
4684 | Elf_Internal_Rela outrel; | |
947216bf | 4685 | bfd_byte *loc; |
252b5132 RH |
4686 | bfd_vma got_addr, plt_addr; |
4687 | bfd_vma plt_index; | |
4688 | struct alpha_elf_got_entry *gotent; | |
4689 | ||
4690 | BFD_ASSERT (h->dynindx != -1); | |
4691 | ||
252b5132 RH |
4692 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
4693 | BFD_ASSERT (splt != NULL); | |
4694 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4695 | BFD_ASSERT (srel != NULL); | |
252b5132 | 4696 | |
6ec7057a RH |
4697 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4698 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4699 | && gotent->use_count > 0) | |
4700 | { | |
4701 | unsigned int insn; | |
4702 | int disp; | |
252b5132 | 4703 | |
6ec7057a RH |
4704 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4705 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4706 | |
6ec7057a RH |
4707 | BFD_ASSERT (gotent->got_offset != -1); |
4708 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4709 | |
6ec7057a RH |
4710 | got_addr = (sgot->output_section->vma |
4711 | + sgot->output_offset | |
4712 | + gotent->got_offset); | |
4713 | plt_addr = (splt->output_section->vma | |
4714 | + splt->output_offset | |
4715 | + gotent->plt_offset); | |
252b5132 | 4716 | |
6ec7057a | 4717 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4718 | |
6ec7057a RH |
4719 | /* Fill in the entry in the procedure linkage table. */ |
4720 | if (elf64_alpha_use_secureplt) | |
4721 | { | |
4722 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4723 | insn = INSN_AD (INSN_BR, 31, disp); | |
4724 | bfd_put_32 (output_bfd, insn, | |
4725 | splt->contents + gotent->plt_offset); | |
252b5132 | 4726 | |
6ec7057a RH |
4727 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4728 | / NEW_PLT_ENTRY_SIZE); | |
4729 | } | |
4730 | else | |
4731 | { | |
4732 | disp = -(gotent->plt_offset + 4); | |
4733 | insn = INSN_AD (INSN_BR, 28, disp); | |
4734 | bfd_put_32 (output_bfd, insn, | |
4735 | splt->contents + gotent->plt_offset); | |
4736 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4737 | splt->contents + gotent->plt_offset + 4); | |
4738 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4739 | splt->contents + gotent->plt_offset + 8); | |
4740 | ||
4741 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4742 | / OLD_PLT_ENTRY_SIZE); | |
4743 | } | |
252b5132 | 4744 | |
6ec7057a RH |
4745 | /* Fill in the entry in the .rela.plt section. */ |
4746 | outrel.r_offset = got_addr; | |
4747 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4748 | outrel.r_addend = 0; | |
252b5132 | 4749 | |
6ec7057a RH |
4750 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4751 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4752 | |
6ec7057a RH |
4753 | /* Fill in the entry in the .got. */ |
4754 | bfd_put_64 (output_bfd, plt_addr, | |
4755 | sgot->contents + gotent->got_offset); | |
4756 | } | |
252b5132 RH |
4757 | } |
4758 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4759 | { | |
4760 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4761 | asection *srel; | |
252b5132 RH |
4762 | struct alpha_elf_got_entry *gotent; |
4763 | ||
4764 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4765 | BFD_ASSERT (srel != NULL); | |
4766 | ||
252b5132 RH |
4767 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4768 | gotent != NULL; | |
4769 | gotent = gotent->next) | |
4770 | { | |
f44f99a5 | 4771 | asection *sgot; |
1bbc9cec | 4772 | long r_type; |
3765b1be | 4773 | |
f44f99a5 RH |
4774 | if (gotent->use_count == 0) |
4775 | continue; | |
4776 | ||
4777 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4778 | |
4779 | r_type = gotent->reloc_type; | |
4780 | switch (r_type) | |
4781 | { | |
4782 | case R_ALPHA_LITERAL: | |
4783 | r_type = R_ALPHA_GLOB_DAT; | |
4784 | break; | |
4785 | case R_ALPHA_TLSGD: | |
4786 | r_type = R_ALPHA_DTPMOD64; | |
4787 | break; | |
4788 | case R_ALPHA_GOTDTPREL: | |
4789 | r_type = R_ALPHA_DTPREL64; | |
4790 | break; | |
4791 | case R_ALPHA_GOTTPREL: | |
4792 | r_type = R_ALPHA_TPREL64; | |
4793 | break; | |
4794 | case R_ALPHA_TLSLDM: | |
4795 | default: | |
4796 | abort (); | |
4797 | } | |
4798 | ||
1bbc9cec RH |
4799 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4800 | gotent->got_offset, h->dynindx, | |
4801 | r_type, gotent->addend); | |
3765b1be RH |
4802 | |
4803 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4804 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4805 | gotent->got_offset + 8, h->dynindx, | |
4806 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4807 | } |
4808 | } | |
4809 | ||
4810 | /* Mark some specially defined symbols as absolute. */ | |
4811 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 RS |
4812 | || h == elf_hash_table (info)->hgot |
4813 | || h == elf_hash_table (info)->hplt) | |
252b5132 RH |
4814 | sym->st_shndx = SHN_ABS; |
4815 | ||
b34976b6 | 4816 | return TRUE; |
252b5132 RH |
4817 | } |
4818 | ||
4819 | /* Finish up the dynamic sections. */ | |
4820 | ||
b34976b6 | 4821 | static bfd_boolean |
a7519a3c RH |
4822 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4823 | struct bfd_link_info *info) | |
252b5132 RH |
4824 | { |
4825 | bfd *dynobj; | |
4826 | asection *sdyn; | |
4827 | ||
4828 | dynobj = elf_hash_table (info)->dynobj; | |
4829 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4830 | ||
4831 | if (elf_hash_table (info)->dynamic_sections_created) | |
4832 | { | |
6ec7057a | 4833 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4834 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4835 | bfd_vma plt_vma, gotplt_vma; |
252b5132 RH |
4836 | |
4837 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6ec7057a | 4838 | srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
252b5132 RH |
4839 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4840 | ||
6ec7057a RH |
4841 | plt_vma = splt->output_section->vma + splt->output_offset; |
4842 | ||
4843 | gotplt_vma = 0; | |
4844 | if (elf64_alpha_use_secureplt) | |
4845 | { | |
4846 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4847 | BFD_ASSERT (sgotplt != NULL); | |
4848 | if (sgotplt->size > 0) | |
4849 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4850 | } | |
4851 | ||
252b5132 | 4852 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4853 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4854 | for (; dyncon < dynconend; dyncon++) |
4855 | { | |
4856 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4857 | |
4858 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4859 | ||
4860 | switch (dyn.d_tag) | |
4861 | { | |
4862 | case DT_PLTGOT: | |
6ec7057a RH |
4863 | dyn.d_un.d_ptr |
4864 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4865 | break; | |
252b5132 | 4866 | case DT_PLTRELSZ: |
6ec7057a RH |
4867 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
4868 | break; | |
252b5132 | 4869 | case DT_JMPREL: |
6ec7057a RH |
4870 | dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; |
4871 | break; | |
252b5132 RH |
4872 | |
4873 | case DT_RELASZ: | |
4874 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4875 | that RELASZ should not include JMPREL. This is not what | |
4876 | the rest of the BFD does. It is, however, what the | |
4877 | glibc ld.so wants. Do this fixup here until we found | |
4878 | out who is right. */ | |
6ec7057a RH |
4879 | if (srelaplt) |
4880 | dyn.d_un.d_val -= srelaplt->size; | |
252b5132 RH |
4881 | break; |
4882 | } | |
4883 | ||
4884 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4885 | } | |
4886 | ||
6ec7057a | 4887 | /* Initialize the plt header. */ |
eea6121a | 4888 | if (splt->size > 0) |
252b5132 | 4889 | { |
6ec7057a RH |
4890 | unsigned int insn; |
4891 | int ofs; | |
4892 | ||
4893 | if (elf64_alpha_use_secureplt) | |
4894 | { | |
4895 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
4896 | ||
4897 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
4898 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4899 | ||
4900 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
4901 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4902 | ||
4903 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
4904 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4905 | ||
4906 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
4907 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4908 | ||
4909 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
4910 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
4911 | ||
4912 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
4913 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
4914 | ||
4915 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
4916 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
4917 | ||
4918 | insn = INSN_AB (INSN_JMP, 31, 27); | |
4919 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
4920 | ||
4921 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
4922 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
4923 | } | |
4924 | else | |
4925 | { | |
4926 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
4927 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4928 | ||
4929 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
4930 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4931 | ||
4932 | insn = INSN_UNOP; | |
4933 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4934 | ||
4935 | insn = INSN_AB (INSN_JMP, 27, 27); | |
4936 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4937 | ||
4938 | /* The next two words will be filled in by ld.so. */ | |
4939 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
4940 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
4941 | } | |
252b5132 | 4942 | |
eecdbe52 | 4943 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4944 | } |
4945 | } | |
4946 | ||
b34976b6 | 4947 | return TRUE; |
252b5132 RH |
4948 | } |
4949 | ||
96e2734b RH |
4950 | /* We need to use a special link routine to handle the .mdebug section. |
4951 | We need to merge all instances of these sections together, not write | |
4952 | them all out sequentially. */ | |
252b5132 | 4953 | |
b34976b6 | 4954 | static bfd_boolean |
a7519a3c | 4955 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4956 | { |
4957 | asection *o; | |
4958 | struct bfd_link_order *p; | |
96e2734b | 4959 | asection *mdebug_sec; |
252b5132 RH |
4960 | struct ecoff_debug_info debug; |
4961 | const struct ecoff_debug_swap *swap | |
4962 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4963 | HDRR *symhdr = &debug.symbolic_header; | |
4dfe6ac6 NC |
4964 | void * mdebug_handle = NULL; |
4965 | struct alpha_elf_link_hash_table * htab; | |
4966 | ||
4967 | htab = alpha_elf_hash_table (info); | |
4968 | if (htab == NULL) | |
4969 | return FALSE; | |
252b5132 | 4970 | |
96e2734b | 4971 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4972 | mdebug_sec = NULL; |
252b5132 RH |
4973 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4974 | { | |
252b5132 RH |
4975 | if (strcmp (o->name, ".mdebug") == 0) |
4976 | { | |
4977 | struct extsym_info einfo; | |
4978 | ||
4979 | /* We have found the .mdebug section in the output file. | |
4980 | Look through all the link_orders comprising it and merge | |
4981 | the information together. */ | |
4982 | symhdr->magic = swap->sym_magic; | |
4983 | /* FIXME: What should the version stamp be? */ | |
4984 | symhdr->vstamp = 0; | |
4985 | symhdr->ilineMax = 0; | |
4986 | symhdr->cbLine = 0; | |
4987 | symhdr->idnMax = 0; | |
4988 | symhdr->ipdMax = 0; | |
4989 | symhdr->isymMax = 0; | |
4990 | symhdr->ioptMax = 0; | |
4991 | symhdr->iauxMax = 0; | |
4992 | symhdr->issMax = 0; | |
4993 | symhdr->issExtMax = 0; | |
4994 | symhdr->ifdMax = 0; | |
4995 | symhdr->crfd = 0; | |
4996 | symhdr->iextMax = 0; | |
4997 | ||
4998 | /* We accumulate the debugging information itself in the | |
4999 | debug_info structure. */ | |
5000 | debug.line = NULL; | |
5001 | debug.external_dnr = NULL; | |
5002 | debug.external_pdr = NULL; | |
5003 | debug.external_sym = NULL; | |
5004 | debug.external_opt = NULL; | |
5005 | debug.external_aux = NULL; | |
5006 | debug.ss = NULL; | |
5007 | debug.ssext = debug.ssext_end = NULL; | |
5008 | debug.external_fdr = NULL; | |
5009 | debug.external_rfd = NULL; | |
5010 | debug.external_ext = debug.external_ext_end = NULL; | |
5011 | ||
5012 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
5013 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 5014 | return FALSE; |
252b5132 RH |
5015 | |
5016 | if (1) | |
5017 | { | |
5018 | asection *s; | |
5019 | EXTR esym; | |
52b9d213 | 5020 | bfd_vma last = 0; |
252b5132 RH |
5021 | unsigned int i; |
5022 | static const char * const name[] = | |
5023 | { | |
5024 | ".text", ".init", ".fini", ".data", | |
5025 | ".rodata", ".sdata", ".sbss", ".bss" | |
5026 | }; | |
5027 | static const int sc[] = { scText, scInit, scFini, scData, | |
5028 | scRData, scSData, scSBss, scBss }; | |
5029 | ||
5030 | esym.jmptbl = 0; | |
5031 | esym.cobol_main = 0; | |
5032 | esym.weakext = 0; | |
5033 | esym.reserved = 0; | |
5034 | esym.ifd = ifdNil; | |
5035 | esym.asym.iss = issNil; | |
5036 | esym.asym.st = stLocal; | |
5037 | esym.asym.reserved = 0; | |
5038 | esym.asym.index = indexNil; | |
5039 | for (i = 0; i < 8; i++) | |
5040 | { | |
5041 | esym.asym.sc = sc[i]; | |
5042 | s = bfd_get_section_by_name (abfd, name[i]); | |
5043 | if (s != NULL) | |
5044 | { | |
5045 | esym.asym.value = s->vma; | |
eea6121a | 5046 | last = s->vma + s->size; |
252b5132 RH |
5047 | } |
5048 | else | |
5049 | esym.asym.value = last; | |
5050 | ||
5051 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5052 | name[i], &esym)) | |
b34976b6 | 5053 | return FALSE; |
252b5132 RH |
5054 | } |
5055 | } | |
5056 | ||
8423293d | 5057 | for (p = o->map_head.link_order; |
252b5132 RH |
5058 | p != (struct bfd_link_order *) NULL; |
5059 | p = p->next) | |
5060 | { | |
5061 | asection *input_section; | |
5062 | bfd *input_bfd; | |
5063 | const struct ecoff_debug_swap *input_swap; | |
5064 | struct ecoff_debug_info input_debug; | |
5065 | char *eraw_src; | |
5066 | char *eraw_end; | |
5067 | ||
5068 | if (p->type != bfd_indirect_link_order) | |
5069 | { | |
fd96f80f | 5070 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5071 | continue; |
5072 | abort (); | |
5073 | } | |
5074 | ||
5075 | input_section = p->u.indirect.section; | |
5076 | input_bfd = input_section->owner; | |
5077 | ||
0ffa91dd NC |
5078 | if (! is_alpha_elf (input_bfd)) |
5079 | /* I don't know what a non ALPHA ELF bfd would be | |
5080 | doing with a .mdebug section, but I don't really | |
5081 | want to deal with it. */ | |
5082 | continue; | |
252b5132 RH |
5083 | |
5084 | input_swap = (get_elf_backend_data (input_bfd) | |
5085 | ->elf_backend_ecoff_debug_swap); | |
5086 | ||
eea6121a | 5087 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5088 | |
5089 | /* The ECOFF linking code expects that we have already | |
5090 | read in the debugging information and set up an | |
5091 | ecoff_debug_info structure, so we do that now. */ | |
5092 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5093 | &input_debug)) | |
b34976b6 | 5094 | return FALSE; |
252b5132 RH |
5095 | |
5096 | if (! (bfd_ecoff_debug_accumulate | |
5097 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5098 | &input_debug, input_swap, info))) | |
b34976b6 | 5099 | return FALSE; |
252b5132 RH |
5100 | |
5101 | /* Loop through the external symbols. For each one with | |
5102 | interesting information, try to find the symbol in | |
5103 | the linker global hash table and save the information | |
5104 | for the output external symbols. */ | |
21d799b5 | 5105 | eraw_src = (char *) input_debug.external_ext; |
252b5132 RH |
5106 | eraw_end = (eraw_src |
5107 | + (input_debug.symbolic_header.iextMax | |
5108 | * input_swap->external_ext_size)); | |
5109 | for (; | |
5110 | eraw_src < eraw_end; | |
5111 | eraw_src += input_swap->external_ext_size) | |
5112 | { | |
5113 | EXTR ext; | |
5114 | const char *name; | |
5115 | struct alpha_elf_link_hash_entry *h; | |
5116 | ||
5117 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5118 | if (ext.asym.sc == scNil | |
5119 | || ext.asym.sc == scUndefined | |
5120 | || ext.asym.sc == scSUndefined) | |
5121 | continue; | |
5122 | ||
5123 | name = input_debug.ssext + ext.asym.iss; | |
4dfe6ac6 | 5124 | h = alpha_elf_link_hash_lookup (htab, name, FALSE, FALSE, TRUE); |
252b5132 RH |
5125 | if (h == NULL || h->esym.ifd != -2) |
5126 | continue; | |
5127 | ||
5128 | if (ext.ifd != -1) | |
5129 | { | |
5130 | BFD_ASSERT (ext.ifd | |
5131 | < input_debug.symbolic_header.ifdMax); | |
5132 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5133 | } | |
5134 | ||
5135 | h->esym = ext; | |
5136 | } | |
5137 | ||
5138 | /* Free up the information we just read. */ | |
5139 | free (input_debug.line); | |
5140 | free (input_debug.external_dnr); | |
5141 | free (input_debug.external_pdr); | |
5142 | free (input_debug.external_sym); | |
5143 | free (input_debug.external_opt); | |
5144 | free (input_debug.external_aux); | |
5145 | free (input_debug.ss); | |
5146 | free (input_debug.ssext); | |
5147 | free (input_debug.external_fdr); | |
5148 | free (input_debug.external_rfd); | |
5149 | free (input_debug.external_ext); | |
5150 | ||
5151 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5152 | elf_link_input_bfd ignores this section. */ | |
5153 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5154 | } | |
5155 | ||
252b5132 RH |
5156 | /* Build the external symbol information. */ |
5157 | einfo.abfd = abfd; | |
5158 | einfo.info = info; | |
5159 | einfo.debug = &debug; | |
5160 | einfo.swap = swap; | |
b34976b6 | 5161 | einfo.failed = FALSE; |
252b5132 RH |
5162 | elf_link_hash_traverse (elf_hash_table (info), |
5163 | elf64_alpha_output_extsym, | |
5164 | (PTR) &einfo); | |
5165 | if (einfo.failed) | |
b34976b6 | 5166 | return FALSE; |
252b5132 RH |
5167 | |
5168 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5169 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5170 | |
5171 | /* Skip this section later on (I don't think this currently | |
5172 | matters, but someday it might). */ | |
8423293d | 5173 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5174 | |
5175 | mdebug_sec = o; | |
5176 | } | |
252b5132 RH |
5177 | } |
5178 | ||
5179 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5180 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5181 | return FALSE; |
252b5132 RH |
5182 | |
5183 | /* Now write out the computed sections. */ | |
5184 | ||
5185 | /* The .got subsections... */ | |
5186 | { | |
5187 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
4dfe6ac6 | 5188 | for (i = htab->got_list; |
252b5132 RH |
5189 | i != NULL; |
5190 | i = alpha_elf_tdata(i)->got_link_next) | |
5191 | { | |
5192 | asection *sgot; | |
5193 | ||
5194 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5195 | if (i == dynobj) | |
5196 | continue; | |
5197 | ||
5198 | sgot = alpha_elf_tdata(i)->got; | |
5199 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5200 | sgot->contents, |
5201 | (file_ptr) sgot->output_offset, | |
eea6121a | 5202 | sgot->size)) |
b34976b6 | 5203 | return FALSE; |
252b5132 RH |
5204 | } |
5205 | } | |
5206 | ||
252b5132 RH |
5207 | if (mdebug_sec != (asection *) NULL) |
5208 | { | |
5209 | BFD_ASSERT (abfd->output_has_begun); | |
5210 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5211 | swap, info, | |
5212 | mdebug_sec->filepos)) | |
b34976b6 | 5213 | return FALSE; |
252b5132 RH |
5214 | |
5215 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5216 | } | |
5217 | ||
b34976b6 | 5218 | return TRUE; |
252b5132 | 5219 | } |
fcfbdf31 JJ |
5220 | |
5221 | static enum elf_reloc_type_class | |
a7519a3c | 5222 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5223 | { |
f51e552e | 5224 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5225 | { |
5226 | case R_ALPHA_RELATIVE: | |
5227 | return reloc_class_relative; | |
5228 | case R_ALPHA_JMP_SLOT: | |
5229 | return reloc_class_plt; | |
5230 | case R_ALPHA_COPY: | |
5231 | return reloc_class_copy; | |
5232 | default: | |
5233 | return reloc_class_normal; | |
5234 | } | |
5235 | } | |
252b5132 | 5236 | \f |
b35d266b | 5237 | static const struct bfd_elf_special_section elf64_alpha_special_sections[] = |
2f89ff8d | 5238 | { |
0112cd26 NC |
5239 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5240 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5241 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5242 | }; |
5243 | ||
252b5132 RH |
5244 | /* ECOFF swapping routines. These are used when dealing with the |
5245 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5246 | from elf32-mips.c. */ |
252b5132 RH |
5247 | static const struct ecoff_debug_swap |
5248 | elf64_alpha_ecoff_debug_swap = | |
5249 | { | |
5250 | /* Symbol table magic number. */ | |
5251 | magicSym2, | |
5252 | /* Alignment of debugging information. E.g., 4. */ | |
5253 | 8, | |
5254 | /* Sizes of external symbolic information. */ | |
5255 | sizeof (struct hdr_ext), | |
5256 | sizeof (struct dnr_ext), | |
5257 | sizeof (struct pdr_ext), | |
5258 | sizeof (struct sym_ext), | |
5259 | sizeof (struct opt_ext), | |
5260 | sizeof (struct fdr_ext), | |
5261 | sizeof (struct rfd_ext), | |
5262 | sizeof (struct ext_ext), | |
5263 | /* Functions to swap in external symbolic data. */ | |
5264 | ecoff_swap_hdr_in, | |
5265 | ecoff_swap_dnr_in, | |
5266 | ecoff_swap_pdr_in, | |
5267 | ecoff_swap_sym_in, | |
5268 | ecoff_swap_opt_in, | |
5269 | ecoff_swap_fdr_in, | |
5270 | ecoff_swap_rfd_in, | |
5271 | ecoff_swap_ext_in, | |
5272 | _bfd_ecoff_swap_tir_in, | |
5273 | _bfd_ecoff_swap_rndx_in, | |
5274 | /* Functions to swap out external symbolic data. */ | |
5275 | ecoff_swap_hdr_out, | |
5276 | ecoff_swap_dnr_out, | |
5277 | ecoff_swap_pdr_out, | |
5278 | ecoff_swap_sym_out, | |
5279 | ecoff_swap_opt_out, | |
5280 | ecoff_swap_fdr_out, | |
5281 | ecoff_swap_rfd_out, | |
5282 | ecoff_swap_ext_out, | |
5283 | _bfd_ecoff_swap_tir_out, | |
5284 | _bfd_ecoff_swap_rndx_out, | |
5285 | /* Function to read in symbolic data. */ | |
5286 | elf64_alpha_read_ecoff_info | |
5287 | }; | |
5288 | \f | |
70bcb145 JW |
5289 | /* Use a non-standard hash bucket size of 8. */ |
5290 | ||
562ace6b | 5291 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5292 | { |
5293 | sizeof (Elf64_External_Ehdr), | |
5294 | sizeof (Elf64_External_Phdr), | |
5295 | sizeof (Elf64_External_Shdr), | |
5296 | sizeof (Elf64_External_Rel), | |
5297 | sizeof (Elf64_External_Rela), | |
5298 | sizeof (Elf64_External_Sym), | |
5299 | sizeof (Elf64_External_Dyn), | |
5300 | sizeof (Elf_External_Note), | |
5301 | 8, | |
5302 | 1, | |
45d6a902 | 5303 | 64, 3, |
70bcb145 JW |
5304 | ELFCLASS64, EV_CURRENT, |
5305 | bfd_elf64_write_out_phdrs, | |
5306 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 5307 | bfd_elf64_checksum_contents, |
70bcb145 | 5308 | bfd_elf64_write_relocs, |
73ff0d56 | 5309 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5310 | bfd_elf64_swap_symbol_out, |
5311 | bfd_elf64_slurp_reloc_table, | |
5312 | bfd_elf64_slurp_symbol_table, | |
5313 | bfd_elf64_swap_dyn_in, | |
5314 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5315 | bfd_elf64_swap_reloc_in, |
5316 | bfd_elf64_swap_reloc_out, | |
5317 | bfd_elf64_swap_reloca_in, | |
5318 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5319 | }; |
5320 | ||
252b5132 RH |
5321 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5322 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5323 | #define ELF_ARCH bfd_arch_alpha | |
ae95ffa6 | 5324 | #define ELF_TARGET_ID ALPHA_ELF_DATA |
56fc028e AJ |
5325 | #define ELF_MACHINE_CODE EM_ALPHA |
5326 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 5327 | #define ELF_COMMONPAGESIZE 0x2000 |
252b5132 RH |
5328 | |
5329 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5330 | elf64_alpha_bfd_link_hash_table_create | |
5331 | ||
5332 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5333 | elf64_alpha_bfd_reloc_type_lookup | |
157090f7 AM |
5334 | #define bfd_elf64_bfd_reloc_name_lookup \ |
5335 | elf64_alpha_bfd_reloc_name_lookup | |
252b5132 RH |
5336 | #define elf_info_to_howto \ |
5337 | elf64_alpha_info_to_howto | |
5338 | ||
5339 | #define bfd_elf64_mkobject \ | |
5340 | elf64_alpha_mkobject | |
5341 | #define elf_backend_object_p \ | |
5342 | elf64_alpha_object_p | |
5343 | ||
5344 | #define elf_backend_section_from_shdr \ | |
5345 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5346 | #define elf_backend_section_flags \ |
5347 | elf64_alpha_section_flags | |
252b5132 RH |
5348 | #define elf_backend_fake_sections \ |
5349 | elf64_alpha_fake_sections | |
5350 | ||
5351 | #define bfd_elf64_bfd_is_local_label_name \ | |
5352 | elf64_alpha_is_local_label_name | |
5353 | #define bfd_elf64_find_nearest_line \ | |
5354 | elf64_alpha_find_nearest_line | |
5355 | #define bfd_elf64_bfd_relax_section \ | |
5356 | elf64_alpha_relax_section | |
5357 | ||
5358 | #define elf_backend_add_symbol_hook \ | |
5359 | elf64_alpha_add_symbol_hook | |
13285a1b AM |
5360 | #define elf_backend_relocs_compatible \ |
5361 | _bfd_elf_relocs_compatible | |
252b5132 RH |
5362 | #define elf_backend_check_relocs \ |
5363 | elf64_alpha_check_relocs | |
5364 | #define elf_backend_create_dynamic_sections \ | |
5365 | elf64_alpha_create_dynamic_sections | |
5366 | #define elf_backend_adjust_dynamic_symbol \ | |
5367 | elf64_alpha_adjust_dynamic_symbol | |
747ffa7b AM |
5368 | #define elf_backend_merge_symbol_attribute \ |
5369 | elf64_alpha_merge_symbol_attribute | |
252b5132 RH |
5370 | #define elf_backend_always_size_sections \ |
5371 | elf64_alpha_always_size_sections | |
5372 | #define elf_backend_size_dynamic_sections \ | |
5373 | elf64_alpha_size_dynamic_sections | |
74541ad4 AM |
5374 | #define elf_backend_omit_section_dynsym \ |
5375 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
252b5132 RH |
5376 | #define elf_backend_relocate_section \ |
5377 | elf64_alpha_relocate_section | |
5378 | #define elf_backend_finish_dynamic_symbol \ | |
5379 | elf64_alpha_finish_dynamic_symbol | |
5380 | #define elf_backend_finish_dynamic_sections \ | |
5381 | elf64_alpha_finish_dynamic_sections | |
5382 | #define bfd_elf64_bfd_final_link \ | |
5383 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5384 | #define elf_backend_reloc_type_class \ |
5385 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5386 | |
5387 | #define elf_backend_ecoff_debug_swap \ | |
5388 | &elf64_alpha_ecoff_debug_swap | |
5389 | ||
70bcb145 JW |
5390 | #define elf_backend_size_info \ |
5391 | alpha_elf_size_info | |
5392 | ||
29ef7005 L |
5393 | #define elf_backend_special_sections \ |
5394 | elf64_alpha_special_sections | |
2f89ff8d | 5395 | |
38b1a46c | 5396 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5397 | #define elf_backend_want_got_plt 0 |
5398 | #define elf_backend_plt_readonly 0 | |
5399 | #define elf_backend_want_plt_sym 1 | |
5400 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5401 | |
5402 | #include "elf64-target.h" | |
2238051f RH |
5403 | \f |
5404 | /* FreeBSD support. */ | |
5405 | ||
5406 | #undef TARGET_LITTLE_SYM | |
5407 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5408 | #undef TARGET_LITTLE_NAME | |
5409 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
d1036acb L |
5410 | #undef ELF_OSABI |
5411 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2238051f RH |
5412 | |
5413 | /* The kernel recognizes executables as valid only if they carry a | |
5414 | "FreeBSD" label in the ELF header. So we put this label on all | |
5415 | executables and (for simplicity) also all other object files. */ | |
5416 | ||
2238051f | 5417 | static void |
a7519a3c RH |
5418 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5419 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5420 | { |
5421 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5422 | ||
5423 | i_ehdrp = elf_elfheader (abfd); | |
5424 | ||
5425 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 5426 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2238051f RH |
5427 | #ifdef OLD_FREEBSD_ABI_LABEL |
5428 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5429 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5430 | #endif | |
5431 | } | |
5432 | ||
5433 | #undef elf_backend_post_process_headers | |
5434 | #define elf_backend_post_process_headers \ | |
5435 | elf64_alpha_fbsd_post_process_headers | |
5436 | ||
571fe01f | 5437 | #undef elf64_bed |
2238051f RH |
5438 | #define elf64_bed elf64_alpha_fbsd_bed |
5439 | ||
5440 | #include "elf64-target.h" |