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, |
0ffa91dd | 3 | 2006, 2007, 2008 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 RH |
105 | \f |
106 | struct alpha_elf_link_hash_entry | |
107 | { | |
108 | struct elf_link_hash_entry root; | |
109 | ||
110 | /* External symbol information. */ | |
111 | EXTR esym; | |
112 | ||
113 | /* Cumulative flags for all the .got entries. */ | |
114 | int flags; | |
115 | ||
9e756d64 | 116 | /* Contexts in which a literal was referenced. */ |
8288a39e RH |
117 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
118 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
119 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
120 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
121 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
122 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
123 | #define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40 | |
124 | #define ALPHA_ELF_LINK_HASH_LU_PLT 0x38 | |
125 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x80 | |
cc03ec80 | 126 | |
252b5132 RH |
127 | /* Used to implement multiple .got subsections. */ |
128 | struct alpha_elf_got_entry | |
129 | { | |
130 | struct alpha_elf_got_entry *next; | |
131 | ||
571fe01f | 132 | /* Which .got subsection? */ |
252b5132 RH |
133 | bfd *gotobj; |
134 | ||
571fe01f | 135 | /* The addend in effect for this entry. */ |
dc810e39 | 136 | bfd_vma addend; |
252b5132 | 137 | |
571fe01f | 138 | /* The .got offset for this entry. */ |
252b5132 RH |
139 | int got_offset; |
140 | ||
6ec7057a RH |
141 | /* The .plt offset for this entry. */ |
142 | int plt_offset; | |
143 | ||
3765b1be RH |
144 | /* How many references to this entry? */ |
145 | int use_count; | |
252b5132 | 146 | |
3765b1be RH |
147 | /* The relocation type of this entry. */ |
148 | unsigned char reloc_type; | |
252b5132 | 149 | |
3765b1be RH |
150 | /* How a LITERAL is used. */ |
151 | unsigned char flags; | |
152 | ||
153 | /* Have we initialized the dynamic relocation for this entry? */ | |
154 | unsigned char reloc_done; | |
155 | ||
156 | /* Have we adjusted this entry for SEC_MERGE? */ | |
157 | unsigned char reloc_xlated; | |
252b5132 RH |
158 | } *got_entries; |
159 | ||
571fe01f | 160 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
161 | of relocation sections. */ |
162 | struct alpha_elf_reloc_entry | |
163 | { | |
164 | struct alpha_elf_reloc_entry *next; | |
165 | ||
571fe01f | 166 | /* Which .reloc section? */ |
252b5132 RH |
167 | asection *srel; |
168 | ||
571fe01f | 169 | /* What kind of relocation? */ |
fcfbdf31 JJ |
170 | unsigned int rtype; |
171 | ||
571fe01f | 172 | /* Is this against read-only section? */ |
fcfbdf31 | 173 | unsigned int reltext : 1; |
252b5132 | 174 | |
571fe01f | 175 | /* How many did we find? */ |
252b5132 RH |
176 | unsigned long count; |
177 | } *reloc_entries; | |
178 | }; | |
179 | ||
180 | /* Alpha ELF linker hash table. */ | |
181 | ||
182 | struct alpha_elf_link_hash_table | |
183 | { | |
184 | struct elf_link_hash_table root; | |
185 | ||
186 | /* The head of a list of .got subsections linked through | |
187 | alpha_elf_tdata(abfd)->got_link_next. */ | |
188 | bfd *got_list; | |
4a828aab RH |
189 | |
190 | /* The most recent relax pass that we've seen. The GOTs | |
191 | should be regenerated if this doesn't match. */ | |
192 | int relax_trip; | |
252b5132 RH |
193 | }; |
194 | ||
195 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
196 | ||
197 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
198 | ((struct alpha_elf_link_hash_entry *) \ | |
199 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
200 | (copy), (follow))) | |
201 | ||
202 | /* Traverse a Alpha ELF linker hash table. */ | |
203 | ||
204 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
205 | (elf_link_hash_traverse \ | |
206 | (&(table)->root, \ | |
a7519a3c | 207 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
252b5132 RH |
208 | (info))) |
209 | ||
210 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
211 | ||
212 | #define alpha_elf_hash_table(p) \ | |
213 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
214 | ||
215 | /* Get the object's symbols as our own entry type. */ | |
216 | ||
217 | #define alpha_elf_sym_hashes(abfd) \ | |
218 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
219 | ||
986a241f RH |
220 | /* Should we do dynamic things to this symbol? This differs from the |
221 | generic version in that we never need to consider function pointer | |
222 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
223 | address is ever taken. */ | |
252b5132 | 224 | |
986a241f | 225 | static inline bfd_boolean |
a7519a3c RH |
226 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
227 | struct bfd_link_info *info) | |
8fb35fed | 228 | { |
986a241f | 229 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 230 | } |
252b5132 RH |
231 | |
232 | /* Create an entry in a Alpha ELF linker hash table. */ | |
233 | ||
234 | static struct bfd_hash_entry * | |
a7519a3c RH |
235 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
236 | struct bfd_hash_table *table, | |
237 | const char *string) | |
252b5132 RH |
238 | { |
239 | struct alpha_elf_link_hash_entry *ret = | |
240 | (struct alpha_elf_link_hash_entry *) entry; | |
241 | ||
242 | /* Allocate the structure if it has not already been allocated by a | |
243 | subclass. */ | |
244 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
245 | ret = ((struct alpha_elf_link_hash_entry *) | |
246 | bfd_hash_allocate (table, | |
247 | sizeof (struct alpha_elf_link_hash_entry))); | |
248 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
249 | return (struct bfd_hash_entry *) ret; | |
250 | ||
251 | /* Call the allocation method of the superclass. */ | |
252 | ret = ((struct alpha_elf_link_hash_entry *) | |
253 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
254 | table, string)); | |
255 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
256 | { | |
257 | /* Set local fields. */ | |
258 | memset (&ret->esym, 0, sizeof (EXTR)); | |
259 | /* We use -2 as a marker to indicate that the information has | |
260 | not been set. -1 means there is no associated ifd. */ | |
261 | ret->esym.ifd = -2; | |
262 | ret->flags = 0; | |
263 | ret->got_entries = NULL; | |
264 | ret->reloc_entries = NULL; | |
265 | } | |
266 | ||
267 | return (struct bfd_hash_entry *) ret; | |
268 | } | |
269 | ||
270 | /* Create a Alpha ELF linker hash table. */ | |
271 | ||
272 | static struct bfd_link_hash_table * | |
a7519a3c | 273 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
274 | { |
275 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 276 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 277 | |
e2d34d7d | 278 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
279 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
280 | return NULL; | |
281 | ||
66eb6687 AM |
282 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
283 | elf64_alpha_link_hash_newfunc, | |
284 | sizeof (struct alpha_elf_link_hash_entry))) | |
252b5132 | 285 | { |
e2d34d7d | 286 | free (ret); |
252b5132 RH |
287 | return NULL; |
288 | } | |
289 | ||
290 | return &ret->root.root; | |
291 | } | |
292 | \f | |
293 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
294 | ||
295 | struct alpha_elf_obj_tdata | |
296 | { | |
297 | struct elf_obj_tdata root; | |
298 | ||
299 | /* For every input file, these are the got entries for that object's | |
300 | local symbols. */ | |
301 | struct alpha_elf_got_entry ** local_got_entries; | |
302 | ||
303 | /* For every input file, this is the object that owns the got that | |
304 | this input file uses. */ | |
305 | bfd *gotobj; | |
306 | ||
307 | /* For every got, this is a linked list through the objects using this got */ | |
308 | bfd *in_got_link_next; | |
309 | ||
310 | /* For every got, this is a link to the next got subsegment. */ | |
311 | bfd *got_link_next; | |
312 | ||
313 | /* For every got, this is the section. */ | |
314 | asection *got; | |
315 | ||
3765b1be RH |
316 | /* For every got, this is it's total number of words. */ |
317 | int total_got_size; | |
252b5132 | 318 | |
3765b1be | 319 | /* For every got, this is the sum of the number of words required |
252b5132 | 320 | to hold all of the member object's local got. */ |
3765b1be | 321 | int local_got_size; |
252b5132 RH |
322 | }; |
323 | ||
324 | #define alpha_elf_tdata(abfd) \ | |
325 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
326 | ||
0ffa91dd NC |
327 | #define is_alpha_elf(bfd) \ |
328 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
329 | && elf_tdata (bfd) != NULL \ | |
330 | && elf_object_id (bfd) == ALPHA_ELF_TDATA) | |
331 | ||
b34976b6 | 332 | static bfd_boolean |
a7519a3c | 333 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 334 | { |
0ffa91dd NC |
335 | return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata), |
336 | ALPHA_ELF_TDATA); | |
252b5132 RH |
337 | } |
338 | ||
b34976b6 | 339 | static bfd_boolean |
a7519a3c | 340 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 341 | { |
252b5132 RH |
342 | /* Set the right machine number for an Alpha ELF file. */ |
343 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
344 | } | |
345 | \f | |
a7519a3c RH |
346 | /* A relocation function which doesn't do anything. */ |
347 | ||
348 | static bfd_reloc_status_type | |
349 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
350 | asymbol *sym ATTRIBUTE_UNUSED, | |
351 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
352 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
353 | { | |
354 | if (output_bfd) | |
355 | reloc->address += sec->output_offset; | |
356 | return bfd_reloc_ok; | |
357 | } | |
358 | ||
359 | /* A relocation function used for an unsupported reloc. */ | |
360 | ||
361 | static bfd_reloc_status_type | |
362 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
363 | asymbol *sym ATTRIBUTE_UNUSED, | |
364 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
365 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
366 | { | |
367 | if (output_bfd) | |
368 | reloc->address += sec->output_offset; | |
369 | return bfd_reloc_notsupported; | |
370 | } | |
371 | ||
372 | /* Do the work of the GPDISP relocation. */ | |
373 | ||
374 | static bfd_reloc_status_type | |
375 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
376 | bfd_byte *p_lda) | |
377 | { | |
378 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
379 | bfd_vma addend; | |
380 | unsigned long i_ldah, i_lda; | |
381 | ||
382 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
383 | i_lda = bfd_get_32 (abfd, p_lda); | |
384 | ||
385 | /* Complain if the instructions are not correct. */ | |
386 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
387 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
388 | ret = bfd_reloc_dangerous; | |
389 | ||
390 | /* Extract the user-supplied offset, mirroring the sign extensions | |
391 | that the instructions perform. */ | |
392 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
393 | addend = (addend ^ 0x80008000) - 0x80008000; | |
394 | ||
395 | gpdisp += addend; | |
396 | ||
397 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
398 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
399 | ret = bfd_reloc_overflow; | |
400 | ||
401 | /* compensate for the sign extension again. */ | |
402 | i_ldah = ((i_ldah & 0xffff0000) | |
403 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
404 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
405 | ||
406 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
407 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
412 | /* The special function for the GPDISP reloc. */ | |
413 | ||
414 | static bfd_reloc_status_type | |
415 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
416 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
417 | asection *input_section, bfd *output_bfd, | |
418 | char **err_msg) | |
419 | { | |
420 | bfd_reloc_status_type ret; | |
421 | bfd_vma gp, relocation; | |
422 | bfd_vma high_address; | |
423 | bfd_byte *p_ldah, *p_lda; | |
424 | ||
425 | /* Don't do anything if we're not doing a final link. */ | |
426 | if (output_bfd) | |
427 | { | |
428 | reloc_entry->address += input_section->output_offset; | |
429 | return bfd_reloc_ok; | |
430 | } | |
431 | ||
432 | high_address = bfd_get_section_limit (abfd, input_section); | |
433 | if (reloc_entry->address > high_address | |
434 | || reloc_entry->address + reloc_entry->addend > high_address) | |
435 | return bfd_reloc_outofrange; | |
436 | ||
437 | /* The gp used in the portion of the output object to which this | |
438 | input object belongs is cached on the input bfd. */ | |
439 | gp = _bfd_get_gp_value (abfd); | |
440 | ||
441 | relocation = (input_section->output_section->vma | |
442 | + input_section->output_offset | |
443 | + reloc_entry->address); | |
444 | ||
445 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
446 | p_lda = p_ldah + reloc_entry->addend; | |
447 | ||
448 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
449 | ||
450 | /* Complain if the instructions are not correct. */ | |
451 | if (ret == bfd_reloc_dangerous) | |
452 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
453 | ||
454 | return ret; | |
455 | } | |
456 | ||
252b5132 RH |
457 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
458 | from smaller values. Start with zero, widen, *then* decrement. */ | |
459 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
460 | ||
dfe57ca0 RH |
461 | #define SKIP_HOWTO(N) \ |
462 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
463 | ||
252b5132 RH |
464 | static reloc_howto_type elf64_alpha_howto_table[] = |
465 | { | |
466 | HOWTO (R_ALPHA_NONE, /* type */ | |
467 | 0, /* rightshift */ | |
468 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 8, /* bitsize */ | |
b34976b6 | 470 | TRUE, /* pc_relative */ |
252b5132 RH |
471 | 0, /* bitpos */ |
472 | complain_overflow_dont, /* complain_on_overflow */ | |
473 | elf64_alpha_reloc_nil, /* special_function */ | |
474 | "NONE", /* name */ | |
b34976b6 | 475 | FALSE, /* partial_inplace */ |
252b5132 RH |
476 | 0, /* src_mask */ |
477 | 0, /* dst_mask */ | |
b34976b6 | 478 | TRUE), /* pcrel_offset */ |
252b5132 RH |
479 | |
480 | /* A 32 bit reference to a symbol. */ | |
481 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 32, /* bitsize */ | |
b34976b6 | 485 | FALSE, /* pc_relative */ |
252b5132 RH |
486 | 0, /* bitpos */ |
487 | complain_overflow_bitfield, /* complain_on_overflow */ | |
488 | 0, /* special_function */ | |
489 | "REFLONG", /* name */ | |
b34976b6 | 490 | FALSE, /* partial_inplace */ |
252b5132 RH |
491 | 0xffffffff, /* src_mask */ |
492 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 493 | FALSE), /* pcrel_offset */ |
252b5132 RH |
494 | |
495 | /* A 64 bit reference to a symbol. */ | |
496 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
497 | 0, /* rightshift */ | |
498 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
499 | 64, /* bitsize */ | |
b34976b6 | 500 | FALSE, /* pc_relative */ |
252b5132 RH |
501 | 0, /* bitpos */ |
502 | complain_overflow_bitfield, /* complain_on_overflow */ | |
503 | 0, /* special_function */ | |
504 | "REFQUAD", /* name */ | |
b34976b6 | 505 | FALSE, /* partial_inplace */ |
252b5132 RH |
506 | MINUS_ONE, /* src_mask */ |
507 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 508 | FALSE), /* pcrel_offset */ |
252b5132 RH |
509 | |
510 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
511 | that when the value is used the value of the gp register will be | |
512 | added in. */ | |
513 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
514 | 0, /* rightshift */ | |
515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 32, /* bitsize */ | |
b34976b6 | 517 | FALSE, /* pc_relative */ |
252b5132 RH |
518 | 0, /* bitpos */ |
519 | complain_overflow_bitfield, /* complain_on_overflow */ | |
520 | 0, /* special_function */ | |
521 | "GPREL32", /* name */ | |
b34976b6 | 522 | FALSE, /* partial_inplace */ |
252b5132 RH |
523 | 0xffffffff, /* src_mask */ |
524 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 525 | FALSE), /* pcrel_offset */ |
252b5132 RH |
526 | |
527 | /* Used for an instruction that refers to memory off the GP register. */ | |
528 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
529 | 0, /* rightshift */ | |
dfe57ca0 | 530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 531 | 16, /* bitsize */ |
b34976b6 | 532 | FALSE, /* pc_relative */ |
252b5132 RH |
533 | 0, /* bitpos */ |
534 | complain_overflow_signed, /* complain_on_overflow */ | |
535 | 0, /* special_function */ | |
536 | "ELF_LITERAL", /* name */ | |
b34976b6 | 537 | FALSE, /* partial_inplace */ |
252b5132 RH |
538 | 0xffff, /* src_mask */ |
539 | 0xffff, /* dst_mask */ | |
b34976b6 | 540 | FALSE), /* pcrel_offset */ |
252b5132 RH |
541 | |
542 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
543 | It identifies a use of the literal. The symbol index is special: | |
544 | 1 means the literal address is in the base register of a memory | |
545 | format instruction; 2 means the literal address is in the byte | |
546 | offset register of a byte-manipulation instruction; 3 means the | |
547 | literal address is in the target register of a jsr instruction. | |
548 | This does not actually do any relocation. */ | |
549 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
550 | 0, /* rightshift */ | |
dfe57ca0 | 551 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 552 | 32, /* bitsize */ |
b34976b6 | 553 | FALSE, /* pc_relative */ |
252b5132 RH |
554 | 0, /* bitpos */ |
555 | complain_overflow_dont, /* complain_on_overflow */ | |
556 | elf64_alpha_reloc_nil, /* special_function */ | |
557 | "LITUSE", /* name */ | |
b34976b6 | 558 | FALSE, /* partial_inplace */ |
252b5132 RH |
559 | 0, /* src_mask */ |
560 | 0, /* dst_mask */ | |
b34976b6 | 561 | FALSE), /* pcrel_offset */ |
252b5132 RH |
562 | |
563 | /* Load the gp register. This is always used for a ldah instruction | |
564 | which loads the upper 16 bits of the gp register. The symbol | |
565 | index of the GPDISP instruction is an offset in bytes to the lda | |
566 | instruction that loads the lower 16 bits. The value to use for | |
567 | the relocation is the difference between the GP value and the | |
568 | current location; the load will always be done against a register | |
569 | holding the current address. | |
570 | ||
571 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
572 | any offset is present in the instructions, it is an offset from | |
573 | the register to the ldah instruction. This lets us avoid any | |
574 | stupid hackery like inventing a gp value to do partial relocation | |
575 | against. Also unlike ECOFF, we do the whole relocation off of | |
576 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
577 | space consuming bit, that, since all the information was present | |
578 | in the GPDISP_HI16 reloc. */ | |
579 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
580 | 16, /* rightshift */ | |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 16, /* bitsize */ | |
b34976b6 | 583 | FALSE, /* pc_relative */ |
252b5132 RH |
584 | 0, /* bitpos */ |
585 | complain_overflow_dont, /* complain_on_overflow */ | |
586 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
587 | "GPDISP", /* name */ | |
b34976b6 | 588 | FALSE, /* partial_inplace */ |
252b5132 RH |
589 | 0xffff, /* src_mask */ |
590 | 0xffff, /* dst_mask */ | |
b34976b6 | 591 | TRUE), /* pcrel_offset */ |
252b5132 RH |
592 | |
593 | /* A 21 bit branch. */ | |
594 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
595 | 2, /* rightshift */ | |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 21, /* bitsize */ | |
b34976b6 | 598 | TRUE, /* pc_relative */ |
252b5132 RH |
599 | 0, /* bitpos */ |
600 | complain_overflow_signed, /* complain_on_overflow */ | |
601 | 0, /* special_function */ | |
602 | "BRADDR", /* name */ | |
b34976b6 | 603 | FALSE, /* partial_inplace */ |
252b5132 RH |
604 | 0x1fffff, /* src_mask */ |
605 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 606 | TRUE), /* pcrel_offset */ |
252b5132 RH |
607 | |
608 | /* A hint for a jump to a register. */ | |
609 | HOWTO (R_ALPHA_HINT, /* type */ | |
610 | 2, /* rightshift */ | |
dfe57ca0 | 611 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 612 | 14, /* bitsize */ |
b34976b6 | 613 | TRUE, /* pc_relative */ |
252b5132 RH |
614 | 0, /* bitpos */ |
615 | complain_overflow_dont, /* complain_on_overflow */ | |
616 | 0, /* special_function */ | |
617 | "HINT", /* name */ | |
b34976b6 | 618 | FALSE, /* partial_inplace */ |
252b5132 RH |
619 | 0x3fff, /* src_mask */ |
620 | 0x3fff, /* dst_mask */ | |
b34976b6 | 621 | TRUE), /* pcrel_offset */ |
252b5132 RH |
622 | |
623 | /* 16 bit PC relative offset. */ | |
624 | HOWTO (R_ALPHA_SREL16, /* type */ | |
625 | 0, /* rightshift */ | |
626 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 16, /* bitsize */ | |
b34976b6 | 628 | TRUE, /* pc_relative */ |
252b5132 RH |
629 | 0, /* bitpos */ |
630 | complain_overflow_signed, /* complain_on_overflow */ | |
631 | 0, /* special_function */ | |
632 | "SREL16", /* name */ | |
b34976b6 | 633 | FALSE, /* partial_inplace */ |
252b5132 RH |
634 | 0xffff, /* src_mask */ |
635 | 0xffff, /* dst_mask */ | |
b34976b6 | 636 | TRUE), /* pcrel_offset */ |
252b5132 RH |
637 | |
638 | /* 32 bit PC relative offset. */ | |
639 | HOWTO (R_ALPHA_SREL32, /* type */ | |
640 | 0, /* rightshift */ | |
641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
642 | 32, /* bitsize */ | |
b34976b6 | 643 | TRUE, /* pc_relative */ |
252b5132 RH |
644 | 0, /* bitpos */ |
645 | complain_overflow_signed, /* complain_on_overflow */ | |
646 | 0, /* special_function */ | |
647 | "SREL32", /* name */ | |
b34976b6 | 648 | FALSE, /* partial_inplace */ |
252b5132 RH |
649 | 0xffffffff, /* src_mask */ |
650 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 651 | TRUE), /* pcrel_offset */ |
252b5132 RH |
652 | |
653 | /* A 64 bit PC relative offset. */ | |
654 | HOWTO (R_ALPHA_SREL64, /* type */ | |
655 | 0, /* rightshift */ | |
656 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 64, /* bitsize */ | |
b34976b6 | 658 | TRUE, /* pc_relative */ |
252b5132 RH |
659 | 0, /* bitpos */ |
660 | complain_overflow_signed, /* complain_on_overflow */ | |
661 | 0, /* special_function */ | |
662 | "SREL64", /* name */ | |
b34976b6 | 663 | FALSE, /* partial_inplace */ |
252b5132 RH |
664 | MINUS_ONE, /* src_mask */ |
665 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 666 | TRUE), /* pcrel_offset */ |
252b5132 | 667 | |
dfe57ca0 RH |
668 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
669 | SKIP_HOWTO (12), | |
670 | SKIP_HOWTO (13), | |
671 | SKIP_HOWTO (14), | |
672 | SKIP_HOWTO (15), | |
673 | SKIP_HOWTO (16), | |
252b5132 RH |
674 | |
675 | /* The high 16 bits of the displacement from GP to the target. */ | |
676 | HOWTO (R_ALPHA_GPRELHIGH, | |
677 | 0, /* rightshift */ | |
dfe57ca0 | 678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 679 | 16, /* bitsize */ |
b34976b6 | 680 | FALSE, /* pc_relative */ |
252b5132 RH |
681 | 0, /* bitpos */ |
682 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 683 | 0, /* special_function */ |
252b5132 | 684 | "GPRELHIGH", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
252b5132 RH |
686 | 0xffff, /* src_mask */ |
687 | 0xffff, /* dst_mask */ | |
b34976b6 | 688 | FALSE), /* pcrel_offset */ |
252b5132 RH |
689 | |
690 | /* The low 16 bits of the displacement from GP to the target. */ | |
691 | HOWTO (R_ALPHA_GPRELLOW, | |
692 | 0, /* rightshift */ | |
dfe57ca0 | 693 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 694 | 16, /* bitsize */ |
b34976b6 | 695 | FALSE, /* pc_relative */ |
252b5132 RH |
696 | 0, /* bitpos */ |
697 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 698 | 0, /* special_function */ |
252b5132 | 699 | "GPRELLOW", /* name */ |
b34976b6 | 700 | FALSE, /* partial_inplace */ |
252b5132 RH |
701 | 0xffff, /* src_mask */ |
702 | 0xffff, /* dst_mask */ | |
b34976b6 | 703 | FALSE), /* pcrel_offset */ |
252b5132 RH |
704 | |
705 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 706 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 707 | 0, /* rightshift */ |
dfe57ca0 | 708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 709 | 16, /* bitsize */ |
b34976b6 | 710 | FALSE, /* pc_relative */ |
252b5132 RH |
711 | 0, /* bitpos */ |
712 | complain_overflow_signed, /* complain_on_overflow */ | |
713 | 0, /* special_function */ | |
dfe57ca0 | 714 | "GPREL16", /* name */ |
b34976b6 | 715 | FALSE, /* partial_inplace */ |
252b5132 RH |
716 | 0xffff, /* src_mask */ |
717 | 0xffff, /* dst_mask */ | |
b34976b6 | 718 | FALSE), /* pcrel_offset */ |
252b5132 | 719 | |
dfe57ca0 RH |
720 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
721 | SKIP_HOWTO (20), | |
722 | SKIP_HOWTO (21), | |
723 | SKIP_HOWTO (22), | |
724 | SKIP_HOWTO (23), | |
252b5132 | 725 | |
fe8bc63d | 726 | /* Misc ELF relocations. */ |
252b5132 RH |
727 | |
728 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
729 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
730 | is present because every other ELF has one, but should not be used | |
731 | because .dynbss is an ugly thing. */ | |
732 | HOWTO (R_ALPHA_COPY, | |
733 | 0, | |
734 | 0, | |
735 | 0, | |
b34976b6 | 736 | FALSE, |
252b5132 RH |
737 | 0, |
738 | complain_overflow_dont, | |
739 | bfd_elf_generic_reloc, | |
740 | "COPY", | |
b34976b6 | 741 | FALSE, |
252b5132 RH |
742 | 0, |
743 | 0, | |
b34976b6 | 744 | TRUE), |
252b5132 RH |
745 | |
746 | /* A dynamic relocation for a .got entry. */ | |
747 | HOWTO (R_ALPHA_GLOB_DAT, | |
748 | 0, | |
749 | 0, | |
750 | 0, | |
b34976b6 | 751 | FALSE, |
252b5132 RH |
752 | 0, |
753 | complain_overflow_dont, | |
754 | bfd_elf_generic_reloc, | |
755 | "GLOB_DAT", | |
b34976b6 | 756 | FALSE, |
252b5132 RH |
757 | 0, |
758 | 0, | |
b34976b6 | 759 | TRUE), |
252b5132 RH |
760 | |
761 | /* A dynamic relocation for a .plt entry. */ | |
762 | HOWTO (R_ALPHA_JMP_SLOT, | |
763 | 0, | |
764 | 0, | |
765 | 0, | |
b34976b6 | 766 | FALSE, |
252b5132 RH |
767 | 0, |
768 | complain_overflow_dont, | |
769 | bfd_elf_generic_reloc, | |
770 | "JMP_SLOT", | |
b34976b6 | 771 | FALSE, |
252b5132 RH |
772 | 0, |
773 | 0, | |
b34976b6 | 774 | TRUE), |
252b5132 RH |
775 | |
776 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
777 | HOWTO (R_ALPHA_RELATIVE, | |
778 | 0, | |
779 | 0, | |
780 | 0, | |
b34976b6 | 781 | FALSE, |
252b5132 RH |
782 | 0, |
783 | complain_overflow_dont, | |
784 | bfd_elf_generic_reloc, | |
785 | "RELATIVE", | |
b34976b6 | 786 | FALSE, |
252b5132 RH |
787 | 0, |
788 | 0, | |
b34976b6 | 789 | TRUE), |
7793f4d0 RH |
790 | |
791 | /* A 21 bit branch that adjusts for gp loads. */ | |
792 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
793 | 2, /* rightshift */ | |
794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 21, /* bitsize */ | |
b34976b6 | 796 | TRUE, /* pc_relative */ |
7793f4d0 RH |
797 | 0, /* bitpos */ |
798 | complain_overflow_signed, /* complain_on_overflow */ | |
799 | 0, /* special_function */ | |
800 | "BRSGP", /* name */ | |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
802 | 0x1fffff, /* src_mask */ |
803 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 804 | TRUE), /* pcrel_offset */ |
3765b1be RH |
805 | |
806 | /* Creates a tls_index for the symbol in the got. */ | |
807 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
808 | 0, /* rightshift */ | |
809 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 16, /* bitsize */ | |
b34976b6 | 811 | FALSE, /* pc_relative */ |
3765b1be RH |
812 | 0, /* bitpos */ |
813 | complain_overflow_signed, /* complain_on_overflow */ | |
814 | 0, /* special_function */ | |
815 | "TLSGD", /* name */ | |
b34976b6 | 816 | FALSE, /* partial_inplace */ |
3765b1be RH |
817 | 0xffff, /* src_mask */ |
818 | 0xffff, /* dst_mask */ | |
b34976b6 | 819 | FALSE), /* pcrel_offset */ |
3765b1be RH |
820 | |
821 | /* Creates a tls_index for the (current) module in the got. */ | |
822 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
823 | 0, /* rightshift */ | |
824 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 16, /* bitsize */ | |
b34976b6 | 826 | FALSE, /* pc_relative */ |
3765b1be RH |
827 | 0, /* bitpos */ |
828 | complain_overflow_signed, /* complain_on_overflow */ | |
829 | 0, /* special_function */ | |
830 | "TLSLDM", /* name */ | |
b34976b6 | 831 | FALSE, /* partial_inplace */ |
3765b1be RH |
832 | 0xffff, /* src_mask */ |
833 | 0xffff, /* dst_mask */ | |
b34976b6 | 834 | FALSE), /* pcrel_offset */ |
3765b1be RH |
835 | |
836 | /* A dynamic relocation for a DTP module entry. */ | |
837 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
838 | 0, /* rightshift */ | |
839 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 64, /* bitsize */ | |
b34976b6 | 841 | FALSE, /* pc_relative */ |
3765b1be RH |
842 | 0, /* bitpos */ |
843 | complain_overflow_bitfield, /* complain_on_overflow */ | |
844 | 0, /* special_function */ | |
845 | "DTPMOD64", /* name */ | |
b34976b6 | 846 | FALSE, /* partial_inplace */ |
3765b1be RH |
847 | MINUS_ONE, /* src_mask */ |
848 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 849 | FALSE), /* pcrel_offset */ |
3765b1be RH |
850 | |
851 | /* Creates a 64-bit offset in the got for the displacement | |
852 | from DTP to the target. */ | |
853 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
854 | 0, /* rightshift */ | |
855 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 16, /* bitsize */ | |
b34976b6 | 857 | FALSE, /* pc_relative */ |
3765b1be RH |
858 | 0, /* bitpos */ |
859 | complain_overflow_signed, /* complain_on_overflow */ | |
860 | 0, /* special_function */ | |
861 | "GOTDTPREL", /* name */ | |
b34976b6 | 862 | FALSE, /* partial_inplace */ |
3765b1be RH |
863 | 0xffff, /* src_mask */ |
864 | 0xffff, /* dst_mask */ | |
b34976b6 | 865 | FALSE), /* pcrel_offset */ |
3765b1be RH |
866 | |
867 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
868 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
869 | 0, /* rightshift */ | |
870 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
871 | 64, /* bitsize */ | |
b34976b6 | 872 | FALSE, /* pc_relative */ |
3765b1be RH |
873 | 0, /* bitpos */ |
874 | complain_overflow_bitfield, /* complain_on_overflow */ | |
875 | 0, /* special_function */ | |
876 | "DTPREL64", /* name */ | |
b34976b6 | 877 | FALSE, /* partial_inplace */ |
3765b1be RH |
878 | MINUS_ONE, /* src_mask */ |
879 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 880 | FALSE), /* pcrel_offset */ |
3765b1be RH |
881 | |
882 | /* The high 16 bits of the displacement from DTP to the target. */ | |
883 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
884 | 0, /* rightshift */ | |
885 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
886 | 16, /* bitsize */ | |
b34976b6 | 887 | FALSE, /* pc_relative */ |
3765b1be RH |
888 | 0, /* bitpos */ |
889 | complain_overflow_signed, /* complain_on_overflow */ | |
890 | 0, /* special_function */ | |
891 | "DTPRELHI", /* name */ | |
b34976b6 | 892 | FALSE, /* partial_inplace */ |
3765b1be RH |
893 | 0xffff, /* src_mask */ |
894 | 0xffff, /* dst_mask */ | |
b34976b6 | 895 | FALSE), /* pcrel_offset */ |
3765b1be RH |
896 | |
897 | /* The low 16 bits of the displacement from DTP to the target. */ | |
898 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
899 | 0, /* rightshift */ | |
900 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
901 | 16, /* bitsize */ | |
b34976b6 | 902 | FALSE, /* pc_relative */ |
3765b1be RH |
903 | 0, /* bitpos */ |
904 | complain_overflow_dont, /* complain_on_overflow */ | |
905 | 0, /* special_function */ | |
906 | "DTPRELLO", /* name */ | |
b34976b6 | 907 | FALSE, /* partial_inplace */ |
3765b1be RH |
908 | 0xffff, /* src_mask */ |
909 | 0xffff, /* dst_mask */ | |
b34976b6 | 910 | FALSE), /* pcrel_offset */ |
3765b1be RH |
911 | |
912 | /* A 16-bit displacement from DTP to the target. */ | |
913 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
914 | 0, /* rightshift */ | |
915 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
916 | 16, /* bitsize */ | |
b34976b6 | 917 | FALSE, /* pc_relative */ |
3765b1be RH |
918 | 0, /* bitpos */ |
919 | complain_overflow_signed, /* complain_on_overflow */ | |
920 | 0, /* special_function */ | |
921 | "DTPREL16", /* name */ | |
b34976b6 | 922 | FALSE, /* partial_inplace */ |
3765b1be RH |
923 | 0xffff, /* src_mask */ |
924 | 0xffff, /* dst_mask */ | |
b34976b6 | 925 | FALSE), /* pcrel_offset */ |
3765b1be RH |
926 | |
927 | /* Creates a 64-bit offset in the got for the displacement | |
928 | from TP to the target. */ | |
929 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
930 | 0, /* rightshift */ | |
931 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 16, /* bitsize */ | |
b34976b6 | 933 | FALSE, /* pc_relative */ |
3765b1be RH |
934 | 0, /* bitpos */ |
935 | complain_overflow_signed, /* complain_on_overflow */ | |
936 | 0, /* special_function */ | |
937 | "GOTTPREL", /* name */ | |
b34976b6 | 938 | FALSE, /* partial_inplace */ |
3765b1be RH |
939 | 0xffff, /* src_mask */ |
940 | 0xffff, /* dst_mask */ | |
b34976b6 | 941 | FALSE), /* pcrel_offset */ |
3765b1be RH |
942 | |
943 | /* A dynamic relocation for a displacement from TP to the target. */ | |
944 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
945 | 0, /* rightshift */ | |
946 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
947 | 64, /* bitsize */ | |
b34976b6 | 948 | FALSE, /* pc_relative */ |
3765b1be RH |
949 | 0, /* bitpos */ |
950 | complain_overflow_bitfield, /* complain_on_overflow */ | |
951 | 0, /* special_function */ | |
952 | "TPREL64", /* name */ | |
b34976b6 | 953 | FALSE, /* partial_inplace */ |
3765b1be RH |
954 | MINUS_ONE, /* src_mask */ |
955 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 956 | FALSE), /* pcrel_offset */ |
3765b1be RH |
957 | |
958 | /* The high 16 bits of the displacement from TP to the target. */ | |
959 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
960 | 0, /* rightshift */ | |
961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
962 | 16, /* bitsize */ | |
b34976b6 | 963 | FALSE, /* pc_relative */ |
3765b1be RH |
964 | 0, /* bitpos */ |
965 | complain_overflow_signed, /* complain_on_overflow */ | |
966 | 0, /* special_function */ | |
967 | "TPRELHI", /* name */ | |
b34976b6 | 968 | FALSE, /* partial_inplace */ |
3765b1be RH |
969 | 0xffff, /* src_mask */ |
970 | 0xffff, /* dst_mask */ | |
b34976b6 | 971 | FALSE), /* pcrel_offset */ |
3765b1be RH |
972 | |
973 | /* The low 16 bits of the displacement from TP to the target. */ | |
974 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
975 | 0, /* rightshift */ | |
976 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
977 | 16, /* bitsize */ | |
b34976b6 | 978 | FALSE, /* pc_relative */ |
3765b1be RH |
979 | 0, /* bitpos */ |
980 | complain_overflow_dont, /* complain_on_overflow */ | |
981 | 0, /* special_function */ | |
982 | "TPRELLO", /* name */ | |
b34976b6 | 983 | FALSE, /* partial_inplace */ |
3765b1be RH |
984 | 0xffff, /* src_mask */ |
985 | 0xffff, /* dst_mask */ | |
b34976b6 | 986 | FALSE), /* pcrel_offset */ |
3765b1be RH |
987 | |
988 | /* A 16-bit displacement from TP to the target. */ | |
989 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
990 | 0, /* rightshift */ | |
991 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
992 | 16, /* bitsize */ | |
b34976b6 | 993 | FALSE, /* pc_relative */ |
3765b1be RH |
994 | 0, /* bitpos */ |
995 | complain_overflow_signed, /* complain_on_overflow */ | |
996 | 0, /* special_function */ | |
997 | "TPREL16", /* name */ | |
b34976b6 | 998 | FALSE, /* partial_inplace */ |
3765b1be RH |
999 | 0xffff, /* src_mask */ |
1000 | 0xffff, /* dst_mask */ | |
b34976b6 | 1001 | FALSE), /* pcrel_offset */ |
252b5132 RH |
1002 | }; |
1003 | ||
252b5132 RH |
1004 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
1005 | ||
1006 | struct elf_reloc_map | |
1007 | { | |
1008 | bfd_reloc_code_real_type bfd_reloc_val; | |
1009 | int elf_reloc_val; | |
1010 | }; | |
1011 | ||
1012 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1013 | { | |
dfe57ca0 RH |
1014 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1015 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1016 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1017 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1018 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1019 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1020 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1021 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1022 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1023 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1024 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1025 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1026 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1027 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1028 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1029 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1030 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1031 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1032 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1033 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1034 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1035 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1036 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1037 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1038 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1039 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1040 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1041 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1042 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1043 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1044 | }; |
1045 | ||
1046 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1047 | ||
1048 | static reloc_howto_type * | |
a7519a3c RH |
1049 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1050 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1051 | { |
1052 | const struct elf_reloc_map *i, *e; | |
1053 | i = e = elf64_alpha_reloc_map; | |
1054 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1055 | for (; i != e; ++i) | |
1056 | { | |
1057 | if (i->bfd_reloc_val == code) | |
1058 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1059 | } | |
1060 | return 0; | |
1061 | } | |
1062 | ||
157090f7 AM |
1063 | static reloc_howto_type * |
1064 | elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1065 | const char *r_name) | |
1066 | { | |
1067 | unsigned int i; | |
1068 | ||
1069 | for (i = 0; | |
1070 | i < (sizeof (elf64_alpha_howto_table) | |
1071 | / sizeof (elf64_alpha_howto_table[0])); | |
1072 | i++) | |
1073 | if (elf64_alpha_howto_table[i].name != NULL | |
1074 | && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0) | |
1075 | return &elf64_alpha_howto_table[i]; | |
1076 | ||
1077 | return NULL; | |
1078 | } | |
1079 | ||
252b5132 RH |
1080 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ |
1081 | ||
1082 | static void | |
a7519a3c RH |
1083 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1084 | Elf_Internal_Rela *dst) | |
252b5132 | 1085 | { |
a7519a3c | 1086 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1087 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1088 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1089 | } | |
3765b1be RH |
1090 | |
1091 | /* These two relocations create a two-word entry in the got. */ | |
1092 | #define alpha_got_entry_size(r_type) \ | |
1093 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1094 | |
1095 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1096 | #define alpha_get_dtprel_base(info) \ |
1097 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1098 | |
1099 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1100 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1101 | #define alpha_get_tprel_base(info) \ |
1102 | (elf_hash_table (info)->tls_sec->vma \ | |
1103 | - align_power ((bfd_vma) 16, \ | |
1104 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1105 | \f |
a7519a3c RH |
1106 | /* Handle an Alpha specific section when reading an object file. This |
1107 | is called when bfd_section_from_shdr finds a section with an unknown | |
1108 | type. | |
1109 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1110 | how to. */ | |
252b5132 | 1111 | |
a7519a3c RH |
1112 | static bfd_boolean |
1113 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1114 | Elf_Internal_Shdr *hdr, | |
1115 | const char *name, | |
1116 | int shindex) | |
252b5132 | 1117 | { |
a7519a3c RH |
1118 | asection *newsect; |
1119 | ||
1120 | /* There ought to be a place to keep ELF backend specific flags, but | |
1121 | at the moment there isn't one. We just keep track of the | |
1122 | sections by their name, instead. Fortunately, the ABI gives | |
1123 | suggested names for all the MIPS specific sections, so we will | |
1124 | probably get away with this. */ | |
1125 | switch (hdr->sh_type) | |
1126 | { | |
1127 | case SHT_ALPHA_DEBUG: | |
1128 | if (strcmp (name, ".mdebug") != 0) | |
1129 | return FALSE; | |
1130 | break; | |
1131 | default: | |
1132 | return FALSE; | |
1133 | } | |
252b5132 | 1134 | |
a7519a3c RH |
1135 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1136 | return FALSE; | |
1137 | newsect = hdr->bfd_section; | |
252b5132 | 1138 | |
a7519a3c | 1139 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1140 | { |
a7519a3c RH |
1141 | if (! bfd_set_section_flags (abfd, newsect, |
1142 | (bfd_get_section_flags (abfd, newsect) | |
1143 | | SEC_DEBUGGING))) | |
1144 | return FALSE; | |
252b5132 | 1145 | } |
a7519a3c RH |
1146 | |
1147 | return TRUE; | |
252b5132 RH |
1148 | } |
1149 | ||
a7519a3c RH |
1150 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1151 | ||
b34976b6 | 1152 | static bfd_boolean |
a7519a3c | 1153 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1154 | { |
a7519a3c RH |
1155 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1156 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1157 | |
a7519a3c RH |
1158 | return TRUE; |
1159 | } | |
252b5132 | 1160 | |
a7519a3c RH |
1161 | /* Set the correct type for an Alpha ELF section. We do this by the |
1162 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1163 | |
a7519a3c RH |
1164 | static bfd_boolean |
1165 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1166 | { | |
1167 | register const char *name; | |
1168 | ||
1169 | name = bfd_get_section_name (abfd, sec); | |
1170 | ||
1171 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1172 | { |
a7519a3c RH |
1173 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1174 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1175 | entsize of 0. FIXME: Does this matter? */ | |
1176 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1177 | hdr->sh_entsize = 0; | |
1178 | else | |
1179 | hdr->sh_entsize = 1; | |
252b5132 | 1180 | } |
a7519a3c RH |
1181 | else if ((sec->flags & SEC_SMALL_DATA) |
1182 | || strcmp (name, ".sdata") == 0 | |
1183 | || strcmp (name, ".sbss") == 0 | |
1184 | || strcmp (name, ".lit4") == 0 | |
1185 | || strcmp (name, ".lit8") == 0) | |
1186 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1187 | |
a7519a3c RH |
1188 | return TRUE; |
1189 | } | |
252b5132 | 1190 | |
a7519a3c RH |
1191 | /* Hook called by the linker routine which adds symbols from an object |
1192 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1193 | ||
1194 | static bfd_boolean | |
1195 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1196 | Elf_Internal_Sym *sym, | |
1197 | const char **namep ATTRIBUTE_UNUSED, | |
1198 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1199 | asection **secp, bfd_vma *valp) | |
1200 | { | |
1201 | if (sym->st_shndx == SHN_COMMON | |
1202 | && !info->relocatable | |
1203 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1204 | { |
a7519a3c RH |
1205 | /* Common symbols less than or equal to -G nn bytes are |
1206 | automatically put into .sbss. */ | |
ffcb7aff | 1207 | |
a7519a3c | 1208 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1209 | |
a7519a3c | 1210 | if (scomm == NULL) |
252b5132 | 1211 | { |
a7519a3c RH |
1212 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1213 | (SEC_ALLOC | |
1214 | | SEC_IS_COMMON | |
1215 | | SEC_LINKER_CREATED)); | |
1216 | if (scomm == NULL) | |
1217 | return FALSE; | |
1218 | } | |
ffcb7aff | 1219 | |
a7519a3c RH |
1220 | *secp = scomm; |
1221 | *valp = sym->st_size; | |
1222 | } | |
ffcb7aff | 1223 | |
a7519a3c RH |
1224 | return TRUE; |
1225 | } | |
252b5132 | 1226 | |
a7519a3c | 1227 | /* Create the .got section. */ |
252b5132 | 1228 | |
a7519a3c RH |
1229 | static bfd_boolean |
1230 | elf64_alpha_create_got_section (bfd *abfd, | |
1231 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1232 | { | |
85d162e6 | 1233 | flagword flags; |
a7519a3c | 1234 | asection *s; |
252b5132 | 1235 | |
0ffa91dd NC |
1236 | if (! is_alpha_elf (abfd)) |
1237 | return FALSE; | |
1238 | ||
85d162e6 AM |
1239 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1240 | | SEC_LINKER_CREATED); | |
1241 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
a7519a3c RH |
1242 | if (s == NULL |
1243 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1244 | return FALSE; | |
252b5132 | 1245 | |
a7519a3c | 1246 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1247 | |
85d162e6 AM |
1248 | /* Make sure the object's gotobj is set to itself so that we default |
1249 | to every object with its own .got. We'll merge .gots later once | |
1250 | we've collected each object's info. */ | |
1251 | alpha_elf_tdata (abfd)->gotobj = abfd; | |
1252 | ||
a7519a3c RH |
1253 | return TRUE; |
1254 | } | |
252b5132 | 1255 | |
a7519a3c | 1256 | /* Create all the dynamic sections. */ |
252b5132 | 1257 | |
a7519a3c RH |
1258 | static bfd_boolean |
1259 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1260 | { | |
1261 | asection *s; | |
85d162e6 | 1262 | flagword flags; |
a7519a3c | 1263 | struct elf_link_hash_entry *h; |
252b5132 | 1264 | |
0ffa91dd NC |
1265 | if (! is_alpha_elf (abfd)) |
1266 | return FALSE; | |
1267 | ||
a7519a3c | 1268 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1269 | |
85d162e6 AM |
1270 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1271 | | SEC_LINKER_CREATED | |
1272 | | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); | |
1273 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); | |
6ec7057a | 1274 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) |
a7519a3c | 1275 | return FALSE; |
252b5132 | 1276 | |
a7519a3c RH |
1277 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1278 | .plt section. */ | |
7325306f RS |
1279 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
1280 | "_PROCEDURE_LINKAGE_TABLE_"); | |
1281 | elf_hash_table (info)->hplt = h; | |
1282 | if (h == NULL) | |
a7519a3c | 1283 | return FALSE; |
d6ad34f6 | 1284 | |
85d162e6 AM |
1285 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1286 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1287 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); | |
6ec7057a | 1288 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
a7519a3c | 1289 | return FALSE; |
252b5132 | 1290 | |
6ec7057a RH |
1291 | if (elf64_alpha_use_secureplt) |
1292 | { | |
85d162e6 AM |
1293 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
1294 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6ec7057a RH |
1295 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
1296 | return FALSE; | |
1297 | } | |
1298 | ||
a7519a3c RH |
1299 | /* We may or may not have created a .got section for this object, but |
1300 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1301 | |
85d162e6 AM |
1302 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
1303 | { | |
1304 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1305 | return FALSE; | |
1306 | } | |
1cd6895c | 1307 | |
85d162e6 AM |
1308 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1309 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1310 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); | |
a7519a3c RH |
1311 | if (s == NULL |
1312 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1313 | return FALSE; | |
252b5132 | 1314 | |
a7519a3c RH |
1315 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1316 | dynobj's .got section. We don't do this in the linker script | |
1317 | because we don't want to define the symbol if we are not creating | |
1318 | a global offset table. */ | |
d98685ac AM |
1319 | h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, |
1320 | "_GLOBAL_OFFSET_TABLE_"); | |
a7519a3c | 1321 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
1322 | if (h == NULL) |
1323 | return FALSE; | |
252b5132 | 1324 | |
a7519a3c | 1325 | return TRUE; |
252b5132 | 1326 | } |
a7519a3c RH |
1327 | \f |
1328 | /* Read ECOFF debugging information from a .mdebug section into a | |
1329 | ecoff_debug_info structure. */ | |
252b5132 | 1330 | |
a7519a3c RH |
1331 | static bfd_boolean |
1332 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1333 | struct ecoff_debug_info *debug) | |
252b5132 | 1334 | { |
a7519a3c RH |
1335 | HDRR *symhdr; |
1336 | const struct ecoff_debug_swap *swap; | |
1337 | char *ext_hdr = NULL; | |
252b5132 | 1338 | |
a7519a3c RH |
1339 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1340 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1341 | |
a7519a3c RH |
1342 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1343 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1344 | goto error_return; | |
252b5132 | 1345 | |
a7519a3c RH |
1346 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1347 | swap->external_hdr_size)) | |
1348 | goto error_return; | |
252b5132 | 1349 | |
a7519a3c RH |
1350 | symhdr = &debug->symbolic_header; |
1351 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1352 | |
a7519a3c RH |
1353 | /* The symbolic header contains absolute file offsets and sizes to |
1354 | read. */ | |
1355 | #define READ(ptr, offset, count, size, type) \ | |
1356 | if (symhdr->count == 0) \ | |
1357 | debug->ptr = NULL; \ | |
1358 | else \ | |
1359 | { \ | |
1360 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1361 | debug->ptr = (type) bfd_malloc (amt); \ | |
1362 | if (debug->ptr == NULL) \ | |
1363 | goto error_return; \ | |
1364 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1365 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1366 | goto error_return; \ | |
1367 | } | |
fe8bc63d | 1368 | |
a7519a3c RH |
1369 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1370 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1371 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1372 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1373 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1374 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1375 | union aux_ext *); | |
1376 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1377 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1378 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1379 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1380 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1381 | #undef READ | |
252b5132 | 1382 | |
a7519a3c | 1383 | debug->fdr = NULL; |
252b5132 | 1384 | |
a7519a3c | 1385 | return TRUE; |
252b5132 | 1386 | |
a7519a3c RH |
1387 | error_return: |
1388 | if (ext_hdr != NULL) | |
1389 | free (ext_hdr); | |
1390 | if (debug->line != NULL) | |
1391 | free (debug->line); | |
1392 | if (debug->external_dnr != NULL) | |
1393 | free (debug->external_dnr); | |
1394 | if (debug->external_pdr != NULL) | |
1395 | free (debug->external_pdr); | |
1396 | if (debug->external_sym != NULL) | |
1397 | free (debug->external_sym); | |
1398 | if (debug->external_opt != NULL) | |
1399 | free (debug->external_opt); | |
1400 | if (debug->external_aux != NULL) | |
1401 | free (debug->external_aux); | |
1402 | if (debug->ss != NULL) | |
1403 | free (debug->ss); | |
1404 | if (debug->ssext != NULL) | |
1405 | free (debug->ssext); | |
1406 | if (debug->external_fdr != NULL) | |
1407 | free (debug->external_fdr); | |
1408 | if (debug->external_rfd != NULL) | |
1409 | free (debug->external_rfd); | |
1410 | if (debug->external_ext != NULL) | |
1411 | free (debug->external_ext); | |
1412 | return FALSE; | |
252b5132 RH |
1413 | } |
1414 | ||
a7519a3c RH |
1415 | /* Alpha ELF local labels start with '$'. */ |
1416 | ||
b34976b6 | 1417 | static bfd_boolean |
a7519a3c | 1418 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1419 | { |
a7519a3c RH |
1420 | return name[0] == '$'; |
1421 | } | |
9e756d64 | 1422 | |
a7519a3c RH |
1423 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1424 | routine in order to handle the ECOFF debugging information. We | |
1425 | still call this mips_elf_find_line because of the slot | |
1426 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1427 | |
a7519a3c RH |
1428 | struct mips_elf_find_line |
1429 | { | |
1430 | struct ecoff_debug_info d; | |
1431 | struct ecoff_find_line i; | |
1432 | }; | |
d6ad34f6 | 1433 | |
a7519a3c RH |
1434 | static bfd_boolean |
1435 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1436 | bfd_vma offset, const char **filename_ptr, | |
1437 | const char **functionname_ptr, | |
1438 | unsigned int *line_ptr) | |
1439 | { | |
1440 | asection *msec; | |
252b5132 | 1441 | |
a7519a3c RH |
1442 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1443 | filename_ptr, functionname_ptr, | |
1444 | line_ptr, 0, | |
1445 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1446 | return TRUE; |
9e756d64 | 1447 | |
a7519a3c RH |
1448 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1449 | if (msec != NULL) | |
1bbc9cec | 1450 | { |
a7519a3c RH |
1451 | flagword origflags; |
1452 | struct mips_elf_find_line *fi; | |
1453 | const struct ecoff_debug_swap * const swap = | |
1454 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1455 | |
a7519a3c RH |
1456 | /* If we are called during a link, alpha_elf_final_link may have |
1457 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1458 | if appropriate (which it normally will be). */ | |
1459 | origflags = msec->flags; | |
1460 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1461 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1462 | |
a7519a3c RH |
1463 | fi = elf_tdata (abfd)->find_line_info; |
1464 | if (fi == NULL) | |
1465 | { | |
1466 | bfd_size_type external_fdr_size; | |
1467 | char *fraw_src; | |
1468 | char *fraw_end; | |
1469 | struct fdr *fdr_ptr; | |
1470 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1471 | |
a7519a3c RH |
1472 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1473 | if (fi == NULL) | |
1474 | { | |
1475 | msec->flags = origflags; | |
1476 | return FALSE; | |
1477 | } | |
9e756d64 | 1478 | |
a7519a3c RH |
1479 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1480 | { | |
1481 | msec->flags = origflags; | |
1482 | return FALSE; | |
1483 | } | |
9e756d64 | 1484 | |
a7519a3c RH |
1485 | /* Swap in the FDR information. */ |
1486 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1487 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1488 | if (fi->d.fdr == NULL) | |
1489 | { | |
1490 | msec->flags = origflags; | |
1491 | return FALSE; | |
1492 | } | |
1493 | external_fdr_size = swap->external_fdr_size; | |
1494 | fdr_ptr = fi->d.fdr; | |
1495 | fraw_src = (char *) fi->d.external_fdr; | |
1496 | fraw_end = (fraw_src | |
1497 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1498 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1499 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1500 | |
a7519a3c | 1501 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1502 | |
a7519a3c RH |
1503 | /* Note that we don't bother to ever free this information. |
1504 | find_nearest_line is either called all the time, as in | |
1505 | objdump -l, so the information should be saved, or it is | |
1506 | rarely called, as in ld error messages, so the memory | |
1507 | wasted is unimportant. Still, it would probably be a | |
1508 | good idea for free_cached_info to throw it away. */ | |
1509 | } | |
9e756d64 | 1510 | |
a7519a3c RH |
1511 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1512 | &fi->i, filename_ptr, functionname_ptr, | |
1513 | line_ptr)) | |
1514 | { | |
1515 | msec->flags = origflags; | |
1516 | return TRUE; | |
1517 | } | |
9e756d64 | 1518 | |
a7519a3c | 1519 | msec->flags = origflags; |
9e756d64 | 1520 | } |
9e756d64 | 1521 | |
a7519a3c | 1522 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1523 | |
a7519a3c RH |
1524 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1525 | filename_ptr, functionname_ptr, | |
1526 | line_ptr); | |
9e756d64 | 1527 | } |
a7519a3c RH |
1528 | \f |
1529 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1530 | |
a7519a3c | 1531 | struct extsym_info |
9e756d64 | 1532 | { |
a7519a3c RH |
1533 | bfd *abfd; |
1534 | struct bfd_link_info *info; | |
1535 | struct ecoff_debug_info *debug; | |
1536 | const struct ecoff_debug_swap *swap; | |
1537 | bfd_boolean failed; | |
1538 | }; | |
9e756d64 | 1539 | |
a7519a3c RH |
1540 | static bfd_boolean |
1541 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1542 | { | |
1543 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1544 | bfd_boolean strip; | |
1545 | asection *sec, *output_section; | |
9e756d64 | 1546 | |
a7519a3c RH |
1547 | if (h->root.root.type == bfd_link_hash_warning) |
1548 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1549 | |
a7519a3c RH |
1550 | if (h->root.indx == -2) |
1551 | strip = FALSE; | |
1552 | else if ((h->root.def_dynamic | |
1553 | || h->root.ref_dynamic | |
1554 | || h->root.root.type == bfd_link_hash_new) | |
1555 | && !h->root.def_regular | |
1556 | && !h->root.ref_regular) | |
1557 | strip = TRUE; | |
1558 | else if (einfo->info->strip == strip_all | |
1559 | || (einfo->info->strip == strip_some | |
1560 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1561 | h->root.root.root.string, | |
1562 | FALSE, FALSE) == NULL)) | |
1563 | strip = TRUE; | |
1564 | else | |
1565 | strip = FALSE; | |
9e756d64 | 1566 | |
a7519a3c | 1567 | if (strip) |
b34976b6 | 1568 | return TRUE; |
9e756d64 | 1569 | |
a7519a3c | 1570 | if (h->esym.ifd == -2) |
9e756d64 | 1571 | { |
a7519a3c RH |
1572 | h->esym.jmptbl = 0; |
1573 | h->esym.cobol_main = 0; | |
1574 | h->esym.weakext = 0; | |
1575 | h->esym.reserved = 0; | |
1576 | h->esym.ifd = ifdNil; | |
1577 | h->esym.asym.value = 0; | |
1578 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1579 | |
a7519a3c RH |
1580 | if (h->root.root.type != bfd_link_hash_defined |
1581 | && h->root.root.type != bfd_link_hash_defweak) | |
1582 | h->esym.asym.sc = scAbs; | |
1583 | else | |
1584 | { | |
1585 | const char *name; | |
9e756d64 | 1586 | |
a7519a3c RH |
1587 | sec = h->root.root.u.def.section; |
1588 | output_section = sec->output_section; | |
9e756d64 | 1589 | |
a7519a3c RH |
1590 | /* When making a shared library and symbol h is the one from |
1591 | the another shared library, OUTPUT_SECTION may be null. */ | |
1592 | if (output_section == NULL) | |
1593 | h->esym.asym.sc = scUndefined; | |
1594 | else | |
1595 | { | |
1596 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1597 | |
a7519a3c RH |
1598 | if (strcmp (name, ".text") == 0) |
1599 | h->esym.asym.sc = scText; | |
1600 | else if (strcmp (name, ".data") == 0) | |
1601 | h->esym.asym.sc = scData; | |
1602 | else if (strcmp (name, ".sdata") == 0) | |
1603 | h->esym.asym.sc = scSData; | |
1604 | else if (strcmp (name, ".rodata") == 0 | |
1605 | || strcmp (name, ".rdata") == 0) | |
1606 | h->esym.asym.sc = scRData; | |
1607 | else if (strcmp (name, ".bss") == 0) | |
1608 | h->esym.asym.sc = scBss; | |
1609 | else if (strcmp (name, ".sbss") == 0) | |
1610 | h->esym.asym.sc = scSBss; | |
1611 | else if (strcmp (name, ".init") == 0) | |
1612 | h->esym.asym.sc = scInit; | |
1613 | else if (strcmp (name, ".fini") == 0) | |
1614 | h->esym.asym.sc = scFini; | |
1615 | else | |
1616 | h->esym.asym.sc = scAbs; | |
1617 | } | |
1618 | } | |
9e756d64 | 1619 | |
a7519a3c RH |
1620 | h->esym.asym.reserved = 0; |
1621 | h->esym.asym.index = indexNil; | |
1622 | } | |
9e756d64 | 1623 | |
a7519a3c RH |
1624 | if (h->root.root.type == bfd_link_hash_common) |
1625 | h->esym.asym.value = h->root.root.u.c.size; | |
1626 | else if (h->root.root.type == bfd_link_hash_defined | |
1627 | || h->root.root.type == bfd_link_hash_defweak) | |
1628 | { | |
1629 | if (h->esym.asym.sc == scCommon) | |
1630 | h->esym.asym.sc = scBss; | |
1631 | else if (h->esym.asym.sc == scSCommon) | |
1632 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1633 | |
a7519a3c RH |
1634 | sec = h->root.root.u.def.section; |
1635 | output_section = sec->output_section; | |
1636 | if (output_section != NULL) | |
1637 | h->esym.asym.value = (h->root.root.u.def.value | |
1638 | + sec->output_offset | |
1639 | + output_section->vma); | |
1640 | else | |
1641 | h->esym.asym.value = 0; | |
1642 | } | |
9e756d64 | 1643 | |
a7519a3c RH |
1644 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1645 | h->root.root.root.string, | |
1646 | &h->esym)) | |
1647 | { | |
1648 | einfo->failed = TRUE; | |
1649 | return FALSE; | |
9e756d64 RH |
1650 | } |
1651 | ||
a7519a3c RH |
1652 | return TRUE; |
1653 | } | |
1654 | \f | |
1655 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1656 | |
a7519a3c RH |
1657 | static struct alpha_elf_got_entry * |
1658 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1659 | unsigned long r_type, unsigned long r_symndx, | |
1660 | bfd_vma r_addend) | |
1661 | { | |
1662 | struct alpha_elf_got_entry *gotent; | |
1663 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1664 | |
a7519a3c RH |
1665 | if (h) |
1666 | slot = &h->got_entries; | |
1667 | else | |
1668 | { | |
1669 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1670 | |
a7519a3c | 1671 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1672 | |
a7519a3c RH |
1673 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1674 | if (!local_got_entries) | |
1675 | { | |
1676 | bfd_size_type size; | |
1677 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1678 | |
a7519a3c RH |
1679 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1680 | size = symtab_hdr->sh_info; | |
1681 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1682 | |
a7519a3c RH |
1683 | local_got_entries |
1684 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1685 | if (!local_got_entries) | |
1686 | return NULL; | |
1687 | ||
1688 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1689 | } | |
1690 | ||
1691 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1692 | } |
1693 | ||
a7519a3c RH |
1694 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1695 | if (gotent->gotobj == abfd | |
1696 | && gotent->reloc_type == r_type | |
1697 | && gotent->addend == r_addend) | |
1698 | break; | |
1699 | ||
1700 | if (!gotent) | |
9e756d64 | 1701 | { |
a7519a3c RH |
1702 | int entry_size; |
1703 | bfd_size_type amt; | |
9e756d64 | 1704 | |
a7519a3c RH |
1705 | amt = sizeof (struct alpha_elf_got_entry); |
1706 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1707 | if (!gotent) | |
1708 | return NULL; | |
9e756d64 | 1709 | |
a7519a3c RH |
1710 | gotent->gotobj = abfd; |
1711 | gotent->addend = r_addend; | |
1712 | gotent->got_offset = -1; | |
6ec7057a | 1713 | gotent->plt_offset = -1; |
a7519a3c RH |
1714 | gotent->use_count = 1; |
1715 | gotent->reloc_type = r_type; | |
1716 | gotent->reloc_done = 0; | |
1717 | gotent->reloc_xlated = 0; | |
9e756d64 | 1718 | |
a7519a3c RH |
1719 | gotent->next = *slot; |
1720 | *slot = gotent; | |
9e756d64 | 1721 | |
a7519a3c RH |
1722 | entry_size = alpha_got_entry_size (r_type); |
1723 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1724 | if (!h) | |
1725 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1726 | } |
a7519a3c RH |
1727 | else |
1728 | gotent->use_count += 1; | |
9e756d64 | 1729 | |
a7519a3c | 1730 | return gotent; |
9e756d64 RH |
1731 | } |
1732 | ||
6ec7057a RH |
1733 | static bfd_boolean |
1734 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1735 | { | |
1736 | return ((ah->root.type == STT_FUNC | |
1737 | || ah->root.root.type == bfd_link_hash_undefweak | |
1738 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1739 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1740 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1741 | } |
1742 | ||
a7519a3c RH |
1743 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1744 | ||
b34976b6 | 1745 | static bfd_boolean |
a7519a3c RH |
1746 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1747 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1748 | { |
a7519a3c RH |
1749 | bfd *dynobj; |
1750 | asection *sreloc; | |
252b5132 | 1751 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1752 | struct alpha_elf_link_hash_entry **sym_hashes; |
1753 | const Elf_Internal_Rela *rel, *relend; | |
a7519a3c | 1754 | bfd_size_type amt; |
252b5132 | 1755 | |
a7519a3c RH |
1756 | if (info->relocatable) |
1757 | return TRUE; | |
252b5132 | 1758 | |
a7519a3c RH |
1759 | /* Don't do anything special with non-loaded, non-alloced sections. |
1760 | In particular, any relocs in such sections should not affect GOT | |
1761 | and PLT reference counting (ie. we don't allow them to create GOT | |
1762 | or PLT entries), there's no possibility or desire to optimize TLS | |
1763 | relocs, and there's not much point in propagating relocs to shared | |
1764 | libs that the dynamic linker won't relocate. */ | |
1765 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1766 | return TRUE; |
252b5132 | 1767 | |
0ffa91dd NC |
1768 | BFD_ASSERT (is_alpha_elf (abfd)); |
1769 | ||
1770 | dynobj = elf_hash_table (info)->dynobj; | |
a7519a3c | 1771 | if (dynobj == NULL) |
0ffa91dd | 1772 | elf_hash_table (info)->dynobj = dynobj = abfd; |
252b5132 | 1773 | |
a7519a3c | 1774 | sreloc = NULL; |
0ffa91dd NC |
1775 | symtab_hdr = &elf_symtab_hdr (abfd); |
1776 | sym_hashes = alpha_elf_sym_hashes (abfd); | |
a7519a3c RH |
1777 | |
1778 | relend = relocs + sec->reloc_count; | |
1779 | for (rel = relocs; rel < relend; ++rel) | |
1780 | { | |
1781 | enum { | |
1782 | NEED_GOT = 1, | |
1783 | NEED_GOT_ENTRY = 2, | |
1784 | NEED_DYNREL = 4 | |
1785 | }; | |
1786 | ||
1787 | unsigned long r_symndx, r_type; | |
1788 | struct alpha_elf_link_hash_entry *h; | |
1789 | unsigned int gotent_flags; | |
1790 | bfd_boolean maybe_dynamic; | |
1791 | unsigned int need; | |
1792 | bfd_vma addend; | |
1793 | ||
1794 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1795 | if (r_symndx < symtab_hdr->sh_info) | |
1796 | h = NULL; | |
1797 | else | |
1798 | { | |
1799 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1800 | |
a7519a3c RH |
1801 | while (h->root.root.type == bfd_link_hash_indirect |
1802 | || h->root.root.type == bfd_link_hash_warning) | |
1803 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1804 | |
a7519a3c RH |
1805 | h->root.ref_regular = 1; |
1806 | } | |
252b5132 | 1807 | |
a7519a3c RH |
1808 | /* We can only get preliminary data on whether a symbol is |
1809 | locally or externally defined, as not all of the input files | |
1810 | have yet been processed. Do something with what we know, as | |
1811 | this may help reduce memory usage and processing time later. */ | |
1812 | maybe_dynamic = FALSE; | |
1813 | if (h && ((info->shared | |
1814 | && (!info->symbolic | |
1815 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1816 | || !h->root.def_regular | |
1817 | || h->root.root.type == bfd_link_hash_defweak)) | |
1818 | maybe_dynamic = TRUE; | |
252b5132 | 1819 | |
a7519a3c RH |
1820 | need = 0; |
1821 | gotent_flags = 0; | |
1822 | r_type = ELF64_R_TYPE (rel->r_info); | |
1823 | addend = rel->r_addend; | |
9e756d64 | 1824 | |
9e756d64 RH |
1825 | switch (r_type) |
1826 | { | |
1827 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1828 | need = NEED_GOT | NEED_GOT_ENTRY; |
1829 | ||
1830 | /* Remember how this literal is used from its LITUSEs. | |
1831 | This will be important when it comes to decide if we can | |
1832 | create a .plt entry for a function symbol. */ | |
1833 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1834 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1835 | gotent_flags |= 1 << rel->r_addend; |
1836 | --rel; | |
1837 | ||
1838 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1839 | if (gotent_flags == 0) | |
1840 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1841 | break; | |
1842 | ||
1843 | case R_ALPHA_GPDISP: | |
1844 | case R_ALPHA_GPREL16: | |
1845 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1846 | case R_ALPHA_GPRELHIGH: |
1847 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1848 | case R_ALPHA_BRSGP: |
1849 | need = NEED_GOT; | |
1850 | break; | |
1851 | ||
1852 | case R_ALPHA_REFLONG: | |
1853 | case R_ALPHA_REFQUAD: | |
1854 | if (info->shared || maybe_dynamic) | |
1855 | need = NEED_DYNREL; | |
cc03ec80 RH |
1856 | break; |
1857 | ||
9e756d64 | 1858 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1859 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1860 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1861 | r_symndx = 0; |
a7519a3c RH |
1862 | h = 0; |
1863 | maybe_dynamic = FALSE; | |
1864 | /* FALLTHRU */ | |
1865 | ||
1866 | case R_ALPHA_TLSGD: | |
1867 | case R_ALPHA_GOTDTPREL: | |
1868 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1869 | break; |
cc03ec80 | 1870 | |
a7519a3c RH |
1871 | case R_ALPHA_GOTTPREL: |
1872 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1873 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1874 | if (info->shared) | |
1875 | info->flags |= DF_STATIC_TLS; | |
1876 | break; | |
1877 | ||
1878 | case R_ALPHA_TPREL64: | |
1879 | if (info->shared || maybe_dynamic) | |
1880 | need = NEED_DYNREL; | |
1881 | if (info->shared) | |
1882 | info->flags |= DF_STATIC_TLS; | |
1883 | break; | |
252b5132 RH |
1884 | } |
1885 | ||
a7519a3c | 1886 | if (need & NEED_GOT) |
252b5132 | 1887 | { |
85d162e6 | 1888 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
6cdc0ccc | 1889 | { |
a7519a3c RH |
1890 | if (!elf64_alpha_create_got_section (abfd, info)) |
1891 | return FALSE; | |
c328dc3f | 1892 | } |
252b5132 | 1893 | } |
252b5132 | 1894 | |
a7519a3c RH |
1895 | if (need & NEED_GOT_ENTRY) |
1896 | { | |
1897 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1898 | |
a7519a3c RH |
1899 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1900 | if (!gotent) | |
1901 | return FALSE; | |
4a67a098 | 1902 | |
a7519a3c | 1903 | if (gotent_flags) |
cc03ec80 | 1904 | { |
a7519a3c RH |
1905 | gotent->flags |= gotent_flags; |
1906 | if (h) | |
1907 | { | |
1908 | gotent_flags |= h->flags; | |
1909 | h->flags = gotent_flags; | |
4a67a098 | 1910 | |
a7519a3c | 1911 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1912 | /* ??? It appears that we won't make it into |
1913 | adjust_dynamic_symbol for symbols that remain | |
1914 | totally undefined. Copying this check here means | |
1915 | we can create a plt entry for them too. */ | |
1916 | h->root.needs_plt | |
1917 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1918 | } | |
a7519a3c | 1919 | } |
252b5132 RH |
1920 | } |
1921 | ||
a7519a3c | 1922 | if (need & NEED_DYNREL) |
9e756d64 | 1923 | { |
a7519a3c RH |
1924 | /* We need to create the section here now whether we eventually |
1925 | use it or not so that it gets mapped to an output section by | |
83bac4b0 | 1926 | the linker. If not used, we'll kill it in size_dynamic_sections. */ |
a7519a3c | 1927 | if (sreloc == NULL) |
9e756d64 | 1928 | { |
83bac4b0 NC |
1929 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1930 | (sec, dynobj, 3, abfd, /*rela?*/ TRUE); | |
1931 | ||
a7519a3c | 1932 | if (sreloc == NULL) |
83bac4b0 | 1933 | return FALSE; |
9e756d64 | 1934 | } |
252b5132 | 1935 | |
a7519a3c RH |
1936 | if (h) |
1937 | { | |
1938 | /* Since we havn't seen all of the input symbols yet, we | |
1939 | don't know whether we'll actually need a dynamic relocation | |
1940 | entry for this reloc. So make a record of it. Once we | |
1941 | find out if this thing needs dynamic relocation we'll | |
1942 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1943 | |
a7519a3c | 1944 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1945 | |
a7519a3c RH |
1946 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1947 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1948 | break; | |
252b5132 | 1949 | |
a7519a3c RH |
1950 | if (!rent) |
1951 | { | |
1952 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1953 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1954 | if (!rent) | |
1955 | return FALSE; | |
252b5132 | 1956 | |
a7519a3c RH |
1957 | rent->srel = sreloc; |
1958 | rent->rtype = r_type; | |
1959 | rent->count = 1; | |
1960 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1961 | |
a7519a3c RH |
1962 | rent->next = h->reloc_entries; |
1963 | h->reloc_entries = rent; | |
1964 | } | |
1965 | else | |
1966 | rent->count++; | |
1967 | } | |
1968 | else if (info->shared) | |
1969 | { | |
1970 | /* If this is a shared library, and the section is to be | |
1971 | loaded into memory, we need a RELATIVE reloc. */ | |
1972 | sreloc->size += sizeof (Elf64_External_Rela); | |
1973 | if (sec->flags & SEC_READONLY) | |
1974 | info->flags |= DF_TEXTREL; | |
1975 | } | |
252b5132 RH |
1976 | } |
1977 | } | |
1978 | ||
b34976b6 | 1979 | return TRUE; |
252b5132 | 1980 | } |
252b5132 | 1981 | |
a7519a3c RH |
1982 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1983 | regular object. The current definition is in some section of the | |
1984 | dynamic object, but we're not including those sections. We have to | |
1985 | change the definition to something the rest of the link can | |
1986 | understand. */ | |
252b5132 | 1987 | |
b34976b6 | 1988 | static bfd_boolean |
a7519a3c RH |
1989 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
1990 | struct elf_link_hash_entry *h) | |
252b5132 | 1991 | { |
a7519a3c RH |
1992 | bfd *dynobj; |
1993 | asection *s; | |
1994 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 1995 | |
a7519a3c RH |
1996 | dynobj = elf_hash_table(info)->dynobj; |
1997 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 1998 | |
a7519a3c | 1999 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2000 | about whether this symbol should get a .plt entry. Irritatingly, it |
2001 | is common for folk to leave undefined symbols in shared libraries, | |
2002 | and they still expect lazy binding; accept undefined symbols in lieu | |
2003 | of STT_FUNC. */ | |
2004 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2005 | { |
6ec7057a | 2006 | h->needs_plt = TRUE; |
252b5132 | 2007 | |
a7519a3c RH |
2008 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2009 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2010 | return FALSE; | |
204692d7 | 2011 | |
6ec7057a RH |
2012 | /* We need one plt entry per got subsection. Delay allocation of |
2013 | the actual plt entries until size_plt_section, called from | |
2014 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2015 | |
a7519a3c RH |
2016 | return TRUE; |
2017 | } | |
2018 | else | |
6ec7057a | 2019 | h->needs_plt = FALSE; |
252b5132 | 2020 | |
a7519a3c RH |
2021 | /* If this is a weak symbol, and there is a real definition, the |
2022 | processor independent code will have arranged for us to see the | |
2023 | real definition first, and we can just use the same value. */ | |
2024 | if (h->u.weakdef != NULL) | |
252b5132 | 2025 | { |
a7519a3c RH |
2026 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2027 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2028 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2029 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2030 | return TRUE; | |
252b5132 | 2031 | } |
a7519a3c RH |
2032 | |
2033 | /* This is a reference to a symbol defined by a dynamic object which | |
2034 | is not a function. The Alpha, since it uses .got entries for all | |
2035 | symbols even in regular objects, does not need the hackery of a | |
2036 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2037 | |
b34976b6 | 2038 | return TRUE; |
252b5132 RH |
2039 | } |
2040 | ||
747ffa7b AM |
2041 | /* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */ |
2042 | ||
2043 | static void | |
2044 | elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
2045 | const Elf_Internal_Sym *isym, | |
2046 | bfd_boolean definition, | |
2047 | bfd_boolean dynamic) | |
2048 | { | |
2049 | if (!dynamic && definition) | |
2050 | h->other = ((h->other & ELF_ST_VISIBILITY (-1)) | |
2051 | | (isym->st_other & ~ELF_ST_VISIBILITY (-1))); | |
2052 | } | |
2053 | ||
a7519a3c RH |
2054 | /* Symbol versioning can create new symbols, and make our old symbols |
2055 | indirect to the new ones. Consolidate the got and reloc information | |
2056 | in these situations. */ | |
252b5132 | 2057 | |
b34976b6 | 2058 | static bfd_boolean |
a7519a3c RH |
2059 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2060 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2061 | { |
a7519a3c | 2062 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2063 | |
a7519a3c RH |
2064 | if (hi->root.root.type != bfd_link_hash_indirect) |
2065 | return TRUE; | |
2066 | hs = hi; | |
2067 | do { | |
2068 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2069 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2070 | |
a7519a3c RH |
2071 | /* Merge the flags. Whee. */ |
2072 | ||
2073 | hs->flags |= hi->flags; | |
2074 | ||
2075 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2076 | doing so, since we don't need it anymore. */ | |
2077 | ||
2078 | if (hs->got_entries == NULL) | |
2079 | hs->got_entries = hi->got_entries; | |
2080 | else | |
2081 | { | |
2082 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2083 | ||
2084 | gsh = hs->got_entries; | |
2085 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2086 | { |
a7519a3c RH |
2087 | gin = gi->next; |
2088 | for (gs = gsh; gs ; gs = gs->next) | |
2089 | if (gi->gotobj == gs->gotobj | |
2090 | && gi->reloc_type == gs->reloc_type | |
2091 | && gi->addend == gs->addend) | |
2092 | { | |
2093 | gi->use_count += gs->use_count; | |
2094 | goto got_found; | |
2095 | } | |
2096 | gi->next = hs->got_entries; | |
2097 | hs->got_entries = gi; | |
2098 | got_found:; | |
252b5132 | 2099 | } |
a7519a3c RH |
2100 | } |
2101 | hi->got_entries = NULL; | |
252b5132 | 2102 | |
a7519a3c RH |
2103 | /* And similar for the reloc entries. */ |
2104 | ||
2105 | if (hs->reloc_entries == NULL) | |
2106 | hs->reloc_entries = hi->reloc_entries; | |
2107 | else | |
2108 | { | |
2109 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2110 | ||
2111 | rsh = hs->reloc_entries; | |
2112 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2113 | { | |
2114 | rin = ri->next; | |
2115 | for (rs = rsh; rs ; rs = rs->next) | |
2116 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2117 | { | |
2118 | rs->count += ri->count; | |
2119 | goto found_reloc; | |
2120 | } | |
2121 | ri->next = hs->reloc_entries; | |
2122 | hs->reloc_entries = ri; | |
2123 | found_reloc:; | |
2124 | } | |
252b5132 | 2125 | } |
a7519a3c | 2126 | hi->reloc_entries = NULL; |
252b5132 | 2127 | |
b34976b6 | 2128 | return TRUE; |
252b5132 RH |
2129 | } |
2130 | ||
a7519a3c | 2131 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2132 | |
b34976b6 | 2133 | static bfd_boolean |
a7519a3c | 2134 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2135 | { |
a7519a3c RH |
2136 | int total = alpha_elf_tdata (a)->total_got_size; |
2137 | bfd *bsub; | |
252b5132 | 2138 | |
a7519a3c RH |
2139 | /* Trivial quick fallout test. */ |
2140 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2141 | return TRUE; | |
252b5132 | 2142 | |
a7519a3c RH |
2143 | /* By their nature, local .got entries cannot be merged. */ |
2144 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2145 | return FALSE; |
252b5132 | 2146 | |
a7519a3c RH |
2147 | /* Failing the common trivial comparison, we must effectively |
2148 | perform the merge. Not actually performing the merge means that | |
2149 | we don't have to store undo information in case we fail. */ | |
2150 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2151 | { | |
2152 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2153 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2154 | int i, n; | |
2155 | ||
2156 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2157 | for (i = 0; i < n; ++i) | |
2158 | { | |
2159 | struct alpha_elf_got_entry *ae, *be; | |
2160 | struct alpha_elf_link_hash_entry *h; | |
2161 | ||
2162 | h = hashes[i]; | |
2163 | while (h->root.root.type == bfd_link_hash_indirect | |
2164 | || h->root.root.type == bfd_link_hash_warning) | |
2165 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2166 | ||
2167 | for (be = h->got_entries; be ; be = be->next) | |
2168 | { | |
2169 | if (be->use_count == 0) | |
2170 | continue; | |
2171 | if (be->gotobj != b) | |
2172 | continue; | |
2173 | ||
2174 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2175 | if (ae->gotobj == a | |
2176 | && ae->reloc_type == be->reloc_type | |
2177 | && ae->addend == be->addend) | |
2178 | goto global_found; | |
2179 | ||
2180 | total += alpha_got_entry_size (be->reloc_type); | |
2181 | if (total > MAX_GOT_SIZE) | |
2182 | return FALSE; | |
2183 | global_found:; | |
2184 | } | |
2185 | } | |
2186 | } | |
252b5132 | 2187 | |
b34976b6 | 2188 | return TRUE; |
252b5132 RH |
2189 | } |
2190 | ||
a7519a3c | 2191 | /* Actually merge two .got tables. */ |
252b5132 | 2192 | |
a7519a3c RH |
2193 | static void |
2194 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2195 | { |
a7519a3c RH |
2196 | int total = alpha_elf_tdata (a)->total_got_size; |
2197 | bfd *bsub; | |
252b5132 | 2198 | |
a7519a3c RH |
2199 | /* Remember local expansion. */ |
2200 | { | |
2201 | int e = alpha_elf_tdata (b)->local_got_size; | |
2202 | total += e; | |
2203 | alpha_elf_tdata (a)->local_got_size += e; | |
2204 | } | |
252b5132 | 2205 | |
a7519a3c RH |
2206 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2207 | { | |
2208 | struct alpha_elf_got_entry **local_got_entries; | |
2209 | struct alpha_elf_link_hash_entry **hashes; | |
2210 | Elf_Internal_Shdr *symtab_hdr; | |
2211 | int i, n; | |
252b5132 | 2212 | |
a7519a3c RH |
2213 | /* Let the local .got entries know they are part of a new subsegment. */ |
2214 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2215 | if (local_got_entries) | |
2216 | { | |
2217 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2218 | for (i = 0; i < n; ++i) | |
2219 | { | |
2220 | struct alpha_elf_got_entry *ent; | |
2221 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2222 | ent->gotobj = a; | |
2223 | } | |
2224 | } | |
252b5132 | 2225 | |
a7519a3c RH |
2226 | /* Merge the global .got entries. */ |
2227 | hashes = alpha_elf_sym_hashes (bsub); | |
2228 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2229 | |
a7519a3c RH |
2230 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2231 | for (i = 0; i < n; ++i) | |
2232 | { | |
2233 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2234 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2235 | |
a7519a3c RH |
2236 | h = hashes[i]; |
2237 | while (h->root.root.type == bfd_link_hash_indirect | |
2238 | || h->root.root.type == bfd_link_hash_warning) | |
2239 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2240 | |
a7519a3c RH |
2241 | pbe = start = &h->got_entries; |
2242 | while ((be = *pbe) != NULL) | |
2243 | { | |
2244 | if (be->use_count == 0) | |
2245 | { | |
2246 | *pbe = be->next; | |
2247 | memset (be, 0xa5, sizeof (*be)); | |
2248 | goto kill; | |
2249 | } | |
2250 | if (be->gotobj != b) | |
2251 | goto next; | |
2252 | ||
2253 | for (ae = *start; ae ; ae = ae->next) | |
2254 | if (ae->gotobj == a | |
2255 | && ae->reloc_type == be->reloc_type | |
2256 | && ae->addend == be->addend) | |
2257 | { | |
2258 | ae->flags |= be->flags; | |
2259 | ae->use_count += be->use_count; | |
2260 | *pbe = be->next; | |
2261 | memset (be, 0xa5, sizeof (*be)); | |
2262 | goto kill; | |
2263 | } | |
2264 | be->gotobj = a; | |
2265 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2266 | |
a7519a3c RH |
2267 | next:; |
2268 | pbe = &be->next; | |
2269 | kill:; | |
2270 | } | |
2271 | } | |
252b5132 | 2272 | |
a7519a3c RH |
2273 | alpha_elf_tdata (bsub)->gotobj = a; |
2274 | } | |
2275 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2276 | |
a7519a3c RH |
2277 | /* Merge the two in_got chains. */ |
2278 | { | |
2279 | bfd *next; | |
252b5132 | 2280 | |
a7519a3c RH |
2281 | bsub = a; |
2282 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2283 | bsub = next; | |
252b5132 | 2284 | |
a7519a3c RH |
2285 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2286 | } | |
252b5132 | 2287 | } |
a7519a3c RH |
2288 | |
2289 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2290 | |
b34976b6 | 2291 | static bfd_boolean |
a7519a3c RH |
2292 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2293 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2294 | { |
a7519a3c | 2295 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2296 | |
a7519a3c RH |
2297 | if (h->root.root.type == bfd_link_hash_warning) |
2298 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2299 | |
a7519a3c RH |
2300 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2301 | if (gotent->use_count > 0) | |
2302 | { | |
2303 | struct alpha_elf_obj_tdata *td; | |
2304 | bfd_size_type *plge; | |
252b5132 | 2305 | |
a7519a3c | 2306 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2307 | plge = &td->got->size; |
2308 | gotent->got_offset = *plge; | |
2309 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2310 | } | |
252b5132 | 2311 | |
6ec7057a | 2312 | return TRUE; |
a7519a3c | 2313 | } |
252b5132 | 2314 | |
a7519a3c RH |
2315 | static void |
2316 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2317 | { | |
2318 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
252b5132 | 2319 | |
a7519a3c RH |
2320 | /* First, zero out the .got sizes, as we may be recalculating the |
2321 | .got after optimizing it. */ | |
2322 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2323 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2324 | |
a7519a3c RH |
2325 | /* Next, fill in the offsets for all the global entries. */ |
2326 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2327 | elf64_alpha_calc_got_offsets_for_symbol, | |
2328 | NULL); | |
252b5132 | 2329 | |
a7519a3c RH |
2330 | /* Finally, fill in the offsets for the local entries. */ |
2331 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2332 | { | |
2333 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2334 | bfd *j; | |
252b5132 | 2335 | |
a7519a3c RH |
2336 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2337 | { | |
2338 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2339 | int k, n; | |
252b5132 | 2340 | |
a7519a3c RH |
2341 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2342 | if (!local_got_entries) | |
2343 | continue; | |
252b5132 | 2344 | |
a7519a3c RH |
2345 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2346 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2347 | if (gotent->use_count > 0) | |
2348 | { | |
2349 | gotent->got_offset = got_offset; | |
2350 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2351 | } | |
2352 | } | |
252b5132 | 2353 | |
a7519a3c RH |
2354 | alpha_elf_tdata(i)->got->size = got_offset; |
2355 | } | |
2356 | } | |
252b5132 | 2357 | |
a7519a3c | 2358 | /* Constructs the gots. */ |
252b5132 | 2359 | |
b34976b6 | 2360 | static bfd_boolean |
a7519a3c | 2361 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2362 | { |
a7519a3c | 2363 | bfd *i, *got_list, *cur_got_obj = NULL; |
252b5132 | 2364 | |
a7519a3c | 2365 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2366 | |
a7519a3c RH |
2367 | /* On the first time through, pretend we have an existing got list |
2368 | consisting of all of the input files. */ | |
2369 | if (got_list == NULL) | |
252b5132 | 2370 | { |
a7519a3c | 2371 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2372 | { |
0ffa91dd NC |
2373 | bfd *this_got; |
2374 | ||
2375 | if (! is_alpha_elf (i)) | |
2376 | continue; | |
2377 | ||
2378 | this_got = alpha_elf_tdata (i)->gotobj; | |
a7519a3c RH |
2379 | if (this_got == NULL) |
2380 | continue; | |
252b5132 | 2381 | |
a7519a3c RH |
2382 | /* We are assuming no merging has yet occurred. */ |
2383 | BFD_ASSERT (this_got == i); | |
252b5132 | 2384 | |
a7519a3c | 2385 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2386 | { |
a7519a3c RH |
2387 | /* Yikes! A single object file has too many entries. */ |
2388 | (*_bfd_error_handler) | |
2389 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2390 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2391 | return FALSE; |
252b5132 | 2392 | } |
252b5132 | 2393 | |
a7519a3c RH |
2394 | if (got_list == NULL) |
2395 | got_list = this_got; | |
2396 | else | |
2397 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2398 | cur_got_obj = this_got; | |
252b5132 RH |
2399 | } |
2400 | ||
a7519a3c RH |
2401 | /* Strange degenerate case of no got references. */ |
2402 | if (got_list == NULL) | |
2403 | return TRUE; | |
2404 | ||
2405 | alpha_elf_hash_table (info)->got_list = got_list; | |
a7519a3c RH |
2406 | } |
2407 | ||
2408 | cur_got_obj = got_list; | |
0ffa91dd NC |
2409 | if (cur_got_obj == NULL) |
2410 | return FALSE; | |
2411 | ||
a7519a3c RH |
2412 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; |
2413 | while (i != NULL) | |
2414 | { | |
2415 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2416 | { |
a7519a3c | 2417 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2418 | |
a7519a3c RH |
2419 | alpha_elf_tdata(i)->got->size = 0; |
2420 | i = alpha_elf_tdata(i)->got_link_next; | |
2421 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
a7519a3c RH |
2422 | } |
2423 | else | |
2424 | { | |
2425 | cur_got_obj = i; | |
2426 | i = alpha_elf_tdata(i)->got_link_next; | |
2427 | } | |
252b5132 RH |
2428 | } |
2429 | ||
a7519a3c RH |
2430 | /* Once the gots have been merged, fill in the got offsets for |
2431 | everything therein. */ | |
4a828aab | 2432 | elf64_alpha_calc_got_offsets (info); |
252b5132 | 2433 | |
a7519a3c | 2434 | return TRUE; |
252b5132 | 2435 | } |
252b5132 | 2436 | |
b34976b6 | 2437 | static bfd_boolean |
a7519a3c | 2438 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2439 | { |
a7519a3c RH |
2440 | asection *splt = (asection *) data; |
2441 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2442 | bfd_boolean saw_one = FALSE; |
252b5132 | 2443 | |
a7519a3c RH |
2444 | /* If we didn't need an entry before, we still don't. */ |
2445 | if (!h->root.needs_plt) | |
2446 | return TRUE; | |
e92d460e | 2447 | |
6ec7057a | 2448 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2449 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2450 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2451 | && gotent->use_count > 0) | |
6ec7057a RH |
2452 | { |
2453 | if (splt->size == 0) | |
2454 | splt->size = PLT_HEADER_SIZE; | |
2455 | gotent->plt_offset = splt->size; | |
2456 | splt->size += PLT_ENTRY_SIZE; | |
2457 | saw_one = TRUE; | |
2458 | } | |
a7519a3c | 2459 | |
6ec7057a RH |
2460 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2461 | if (!saw_one) | |
2462 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2463 | |
2464 | return TRUE; | |
2465 | } | |
2466 | ||
4a828aab RH |
2467 | /* Called from relax_section to rebuild the PLT in light of potential changes |
2468 | in the function's status. */ | |
a7519a3c | 2469 | |
4a828aab | 2470 | static void |
a7519a3c RH |
2471 | elf64_alpha_size_plt_section (struct bfd_link_info *info) |
2472 | { | |
6ec7057a | 2473 | asection *splt, *spltrel, *sgotplt; |
a7519a3c RH |
2474 | unsigned long entries; |
2475 | bfd *dynobj; | |
2476 | ||
2477 | dynobj = elf_hash_table(info)->dynobj; | |
6ec7057a | 2478 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
a7519a3c | 2479 | if (splt == NULL) |
4a828aab | 2480 | return; |
252b5132 | 2481 | |
a7519a3c | 2482 | splt->size = 0; |
252b5132 | 2483 | |
a7519a3c RH |
2484 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2485 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2486 | |
a7519a3c RH |
2487 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2488 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4a828aab | 2489 | entries = 0; |
a7519a3c | 2490 | if (splt->size) |
6ec7057a RH |
2491 | { |
2492 | if (elf64_alpha_use_secureplt) | |
2493 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2494 | else | |
2495 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2496 | } | |
a7519a3c | 2497 | spltrel->size = entries * sizeof (Elf64_External_Rela); |
e92d460e | 2498 | |
6ec7057a RH |
2499 | /* When using the secureplt, we need two words somewhere in the data |
2500 | segment for the dynamic linker to tell us where to go. This is the | |
2501 | entire contents of the .got.plt section. */ | |
2502 | if (elf64_alpha_use_secureplt) | |
2503 | { | |
2504 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2505 | sgotplt->size = entries ? 16 : 0; | |
2506 | } | |
a7519a3c | 2507 | } |
e92d460e | 2508 | |
a7519a3c RH |
2509 | static bfd_boolean |
2510 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2511 | struct bfd_link_info *info) | |
2512 | { | |
2513 | bfd *i; | |
252b5132 | 2514 | |
a7519a3c RH |
2515 | if (info->relocatable) |
2516 | return TRUE; | |
252b5132 | 2517 | |
a7519a3c RH |
2518 | /* First, take care of the indirect symbols created by versioning. */ |
2519 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2520 | elf64_alpha_merge_ind_symbols, | |
2521 | NULL); | |
252b5132 | 2522 | |
a7519a3c RH |
2523 | if (!elf64_alpha_size_got_sections (info)) |
2524 | return FALSE; | |
252b5132 | 2525 | |
a7519a3c RH |
2526 | /* Allocate space for all of the .got subsections. */ |
2527 | i = alpha_elf_hash_table (info)->got_list; | |
2528 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2529 | { |
a7519a3c RH |
2530 | asection *s = alpha_elf_tdata(i)->got; |
2531 | if (s->size > 0) | |
2532 | { | |
2533 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2534 | if (s->contents == NULL) | |
2535 | return FALSE; | |
2536 | } | |
252b5132 RH |
2537 | } |
2538 | ||
b34976b6 | 2539 | return TRUE; |
252b5132 | 2540 | } |
3765b1be | 2541 | |
a7519a3c | 2542 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2543 | |
a7519a3c RH |
2544 | static int |
2545 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2546 | { | |
2547 | switch (r_type) | |
3765b1be | 2548 | { |
a7519a3c RH |
2549 | /* May appear in GOT entries. */ |
2550 | case R_ALPHA_TLSGD: | |
2551 | return (dynamic ? 2 : shared ? 1 : 0); | |
2552 | case R_ALPHA_TLSLDM: | |
2553 | return shared; | |
2554 | case R_ALPHA_LITERAL: | |
2555 | case R_ALPHA_GOTTPREL: | |
2556 | return dynamic || shared; | |
2557 | case R_ALPHA_GOTDTPREL: | |
2558 | return dynamic; | |
3765b1be | 2559 | |
a7519a3c RH |
2560 | /* May appear in data sections. */ |
2561 | case R_ALPHA_REFLONG: | |
2562 | case R_ALPHA_REFQUAD: | |
2563 | case R_ALPHA_TPREL64: | |
2564 | return dynamic || shared; | |
3765b1be | 2565 | |
a7519a3c RH |
2566 | /* Everything else is illegal. We'll issue an error during |
2567 | relocate_section. */ | |
2568 | default: | |
2569 | return 0; | |
2570 | } | |
2571 | } | |
3765b1be | 2572 | |
a7519a3c | 2573 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2574 | |
a7519a3c RH |
2575 | static bfd_boolean |
2576 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2577 | struct bfd_link_info *info) | |
2578 | { | |
2579 | bfd_boolean dynamic; | |
2580 | struct alpha_elf_reloc_entry *relent; | |
2581 | unsigned long entries; | |
3765b1be | 2582 | |
a7519a3c RH |
2583 | if (h->root.root.type == bfd_link_hash_warning) |
2584 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2585 | |
a7519a3c RH |
2586 | /* If the symbol was defined as a common symbol in a regular object |
2587 | file, and there was no definition in any dynamic object, then the | |
2588 | linker will have allocated space for the symbol in a common | |
2589 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2590 | set. This is done for dynamic symbols in | |
2591 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2592 | symbols, somehow. */ | |
2593 | if (!h->root.def_regular | |
2594 | && h->root.ref_regular | |
2595 | && !h->root.def_dynamic | |
2596 | && (h->root.root.type == bfd_link_hash_defined | |
2597 | || h->root.root.type == bfd_link_hash_defweak) | |
2598 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2599 | h->root.def_regular = 1; | |
3765b1be | 2600 | |
a7519a3c RH |
2601 | /* If the symbol is dynamic, we'll need all the relocations in their |
2602 | natural form. If this is a shared object, and it has been forced | |
2603 | local, we'll need the same number of RELATIVE relocations. */ | |
2604 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2605 | |
a7519a3c RH |
2606 | /* If the symbol is a hidden undefined weak, then we never have any |
2607 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2608 | based on info->shared. */ | |
2609 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2610 | return TRUE; | |
2611 | ||
2612 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2613 | { |
a7519a3c RH |
2614 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2615 | info->shared); | |
2616 | if (entries) | |
2617 | { | |
2618 | relent->srel->size += | |
2619 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2620 | if (relent->reltext) | |
2621 | info->flags |= DT_TEXTREL; | |
2622 | } | |
2623 | } | |
3765b1be | 2624 | |
a7519a3c RH |
2625 | return TRUE; |
2626 | } | |
3765b1be | 2627 | |
a7519a3c RH |
2628 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2629 | global symbols. */ | |
3765b1be | 2630 | |
a7519a3c RH |
2631 | static bfd_boolean |
2632 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2633 | struct bfd_link_info *info) | |
2634 | { | |
2635 | bfd_boolean dynamic; | |
2636 | struct alpha_elf_got_entry *gotent; | |
2637 | unsigned long entries; | |
3765b1be | 2638 | |
a7519a3c RH |
2639 | if (h->root.root.type == bfd_link_hash_warning) |
2640 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2641 | ||
6ec7057a RH |
2642 | /* If we're using a plt for this symbol, then all of its relocations |
2643 | for its got entries go into .rela.plt. */ | |
2644 | if (h->root.needs_plt) | |
2645 | return TRUE; | |
2646 | ||
a7519a3c RH |
2647 | /* If the symbol is dynamic, we'll need all the relocations in their |
2648 | natural form. If this is a shared object, and it has been forced | |
2649 | local, we'll need the same number of RELATIVE relocations. */ | |
2650 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2651 | ||
2652 | /* If the symbol is a hidden undefined weak, then we never have any | |
2653 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2654 | based on info->shared. */ | |
2655 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2656 | return TRUE; | |
2657 | ||
2658 | entries = 0; | |
2659 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2660 | if (gotent->use_count > 0) | |
2661 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2662 | dynamic, info->shared); | |
2663 | ||
a7519a3c RH |
2664 | if (entries > 0) |
2665 | { | |
2666 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2667 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2668 | BFD_ASSERT (srel != NULL); | |
2669 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2670 | } |
3765b1be | 2671 | |
a7519a3c | 2672 | return TRUE; |
3765b1be RH |
2673 | } |
2674 | ||
a7519a3c | 2675 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2676 | |
4a828aab | 2677 | static void |
a7519a3c | 2678 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2679 | { |
a7519a3c RH |
2680 | unsigned long entries; |
2681 | bfd *i, *dynobj; | |
2682 | asection *srel; | |
252b5132 | 2683 | |
a7519a3c RH |
2684 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2685 | require attention for the main application as well. */ | |
252b5132 | 2686 | |
a7519a3c RH |
2687 | entries = 0; |
2688 | for (i = alpha_elf_hash_table(info)->got_list; | |
2689 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2690 | { | |
2691 | bfd *j; | |
3241278a | 2692 | |
a7519a3c RH |
2693 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2694 | { | |
2695 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2696 | int k, n; | |
252b5132 | 2697 | |
a7519a3c RH |
2698 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2699 | if (!local_got_entries) | |
2700 | continue; | |
252b5132 | 2701 | |
a7519a3c RH |
2702 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2703 | for (gotent = local_got_entries[k]; | |
2704 | gotent ; gotent = gotent->next) | |
2705 | if (gotent->use_count > 0) | |
2706 | entries += (alpha_dynamic_entries_for_reloc | |
2707 | (gotent->reloc_type, 0, info->shared)); | |
2708 | } | |
2709 | } | |
3765b1be | 2710 | |
a7519a3c RH |
2711 | dynobj = elf_hash_table(info)->dynobj; |
2712 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2713 | if (!srel) | |
2714 | { | |
2715 | BFD_ASSERT (entries == 0); | |
4a828aab | 2716 | return; |
a7519a3c RH |
2717 | } |
2718 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2719 | |
a7519a3c RH |
2720 | /* Now do the non-local symbols. */ |
2721 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2722 | elf64_alpha_size_rela_got_1, info); | |
a7519a3c | 2723 | } |
252b5132 | 2724 | |
a7519a3c | 2725 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2726 | |
a7519a3c RH |
2727 | static bfd_boolean |
2728 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2729 | struct bfd_link_info *info) | |
2730 | { | |
2731 | bfd *dynobj; | |
2732 | asection *s; | |
2733 | bfd_boolean relplt; | |
3765b1be | 2734 | |
a7519a3c RH |
2735 | dynobj = elf_hash_table(info)->dynobj; |
2736 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2737 | |
a7519a3c RH |
2738 | if (elf_hash_table (info)->dynamic_sections_created) |
2739 | { | |
2740 | /* Set the contents of the .interp section to the interpreter. */ | |
2741 | if (info->executable) | |
252b5132 | 2742 | { |
a7519a3c RH |
2743 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2744 | BFD_ASSERT (s != NULL); | |
2745 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2746 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2747 | } | |
3765b1be | 2748 | |
a7519a3c RH |
2749 | /* Now that we've seen all of the input files, we can decide which |
2750 | symbols need dynamic relocation entries and which don't. We've | |
2751 | collected information in check_relocs that we can now apply to | |
2752 | size the dynamic relocation sections. */ | |
2753 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2754 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2755 | |
a7519a3c | 2756 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2757 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2758 | } |
2759 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2760 | |
a7519a3c RH |
2761 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2762 | determined the sizes of the various dynamic sections. Allocate | |
2763 | memory for them. */ | |
2764 | relplt = FALSE; | |
2765 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2766 | { | |
2767 | const char *name; | |
3765b1be | 2768 | |
a7519a3c RH |
2769 | if (!(s->flags & SEC_LINKER_CREATED)) |
2770 | continue; | |
cc03ec80 | 2771 | |
a7519a3c RH |
2772 | /* It's OK to base decisions on the section name, because none |
2773 | of the dynobj section names depend upon the input files. */ | |
2774 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2775 | |
0112cd26 | 2776 | if (CONST_STRNEQ (name, ".rela")) |
3765b1be | 2777 | { |
c456f082 | 2778 | if (s->size != 0) |
a7519a3c | 2779 | { |
c456f082 | 2780 | if (strcmp (name, ".rela.plt") == 0) |
a7519a3c | 2781 | relplt = TRUE; |
252b5132 | 2782 | |
a7519a3c RH |
2783 | /* We use the reloc_count field as a counter if we need |
2784 | to copy relocs into the output file. */ | |
2785 | s->reloc_count = 0; | |
252b5132 | 2786 | } |
3765b1be | 2787 | } |
0112cd26 | 2788 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 AM |
2789 | && strcmp (name, ".plt") != 0 |
2790 | && strcmp (name, ".dynbss") != 0) | |
3765b1be | 2791 | { |
a7519a3c RH |
2792 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2793 | continue; | |
2794 | } | |
252b5132 | 2795 | |
c456f082 AM |
2796 | if (s->size == 0) |
2797 | { | |
2798 | /* If we don't need this section, strip it from the output file. | |
2799 | This is to handle .rela.bss and .rela.plt. We must create it | |
2800 | in create_dynamic_sections, because it must be created before | |
2801 | the linker maps input sections to output sections. The | |
2802 | linker does that before adjust_dynamic_symbol is called, and | |
2803 | it is that function which decides whether anything needs to | |
2804 | go into these sections. */ | |
2805 | s->flags |= SEC_EXCLUDE; | |
2806 | } | |
2807 | else if ((s->flags & SEC_HAS_CONTENTS) != 0) | |
a7519a3c RH |
2808 | { |
2809 | /* Allocate memory for the section contents. */ | |
2810 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
c456f082 | 2811 | if (s->contents == NULL) |
b34976b6 | 2812 | return FALSE; |
a7519a3c RH |
2813 | } |
2814 | } | |
3765b1be | 2815 | |
a7519a3c RH |
2816 | if (elf_hash_table (info)->dynamic_sections_created) |
2817 | { | |
2818 | /* Add some entries to the .dynamic section. We fill in the | |
2819 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2820 | must add the entries now so that we get the correct size for | |
2821 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2822 | dynamic linker and used by the debugger. */ | |
2823 | #define add_dynamic_entry(TAG, VAL) \ | |
2824 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2825 | |
a7519a3c RH |
2826 | if (info->executable) |
2827 | { | |
2828 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2829 | return FALSE; | |
3765b1be RH |
2830 | } |
2831 | ||
a7519a3c | 2832 | if (relplt) |
3765b1be | 2833 | { |
a7519a3c RH |
2834 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2835 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2836 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2837 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2838 | return FALSE; | |
6ec7057a RH |
2839 | |
2840 | if (elf64_alpha_use_secureplt | |
2841 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2842 | return FALSE; | |
a7519a3c | 2843 | } |
252b5132 | 2844 | |
a7519a3c RH |
2845 | if (!add_dynamic_entry (DT_RELA, 0) |
2846 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2847 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2848 | return FALSE; | |
2849 | ||
2850 | if (info->flags & DF_TEXTREL) | |
2851 | { | |
2852 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2853 | return FALSE; | |
252b5132 RH |
2854 | } |
2855 | } | |
a7519a3c | 2856 | #undef add_dynamic_entry |
252b5132 | 2857 | |
b34976b6 | 2858 | return TRUE; |
252b5132 | 2859 | } |
a7519a3c RH |
2860 | \f |
2861 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2862 | |
a7519a3c RH |
2863 | Currently I'm only handling what I can do with existing compiler |
2864 | and assembler support, which means no instructions are removed, | |
2865 | though some may be nopped. At this time GCC does not emit enough | |
2866 | information to do all of the relaxing that is possible. It will | |
2867 | take some not small amount of work for that to happen. | |
252b5132 | 2868 | |
a7519a3c RH |
2869 | There are a couple of interesting papers that I once read on this |
2870 | subject, that I cannot find references to at the moment, that | |
2871 | related to Alpha in particular. They are by David Wall, then of | |
2872 | DEC WRL. */ | |
252b5132 | 2873 | |
a7519a3c RH |
2874 | struct alpha_relax_info |
2875 | { | |
2876 | bfd *abfd; | |
2877 | asection *sec; | |
2878 | bfd_byte *contents; | |
2879 | Elf_Internal_Shdr *symtab_hdr; | |
2880 | Elf_Internal_Rela *relocs, *relend; | |
2881 | struct bfd_link_info *link_info; | |
2882 | bfd_vma gp; | |
2883 | bfd *gotobj; | |
2884 | asection *tsec; | |
2885 | struct alpha_elf_link_hash_entry *h; | |
2886 | struct alpha_elf_got_entry **first_gotent; | |
2887 | struct alpha_elf_got_entry *gotent; | |
2888 | bfd_boolean changed_contents; | |
2889 | bfd_boolean changed_relocs; | |
2890 | unsigned char other; | |
2891 | }; | |
252b5132 | 2892 | |
a7519a3c RH |
2893 | static Elf_Internal_Rela * |
2894 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2895 | Elf_Internal_Rela *relend, | |
2896 | bfd_vma offset, int type) | |
2897 | { | |
2898 | while (rel < relend) | |
252b5132 | 2899 | { |
a7519a3c RH |
2900 | if (rel->r_offset == offset |
2901 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2902 | return rel; | |
2903 | ++rel; | |
2904 | } | |
2905 | return NULL; | |
2906 | } | |
252b5132 | 2907 | |
a7519a3c RH |
2908 | static bfd_boolean |
2909 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2910 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2911 | { | |
2912 | unsigned int insn; | |
2913 | bfd_signed_vma disp; | |
252b5132 | 2914 | |
a7519a3c RH |
2915 | /* Get the instruction. */ |
2916 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2917 | |
a7519a3c RH |
2918 | if (insn >> 26 != OP_LDQ) |
2919 | { | |
2920 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2921 | ((*_bfd_error_handler) | |
2922 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2923 | info->abfd, info->sec, | |
2924 | (unsigned long) irel->r_offset, howto->name)); | |
2925 | return TRUE; | |
2926 | } | |
252b5132 | 2927 | |
a7519a3c RH |
2928 | /* Can't relax dynamic symbols. */ |
2929 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2930 | return TRUE; | |
252b5132 | 2931 | |
a7519a3c RH |
2932 | /* Can't use local-exec relocations in shared libraries. */ |
2933 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2934 | return TRUE; | |
252b5132 | 2935 | |
a7519a3c RH |
2936 | if (r_type == R_ALPHA_LITERAL) |
2937 | { | |
2938 | /* Look for nice constant addresses. This includes the not-uncommon | |
2939 | special case of 0 for undefweak symbols. */ | |
2940 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2941 | || (!info->link_info->shared | |
2942 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2943 | { | |
2944 | disp = 0; | |
2945 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2946 | insn |= (symval & 0xffff); | |
2947 | r_type = R_ALPHA_NONE; | |
2948 | } | |
2949 | else | |
2950 | { | |
2951 | disp = symval - info->gp; | |
2952 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2953 | r_type = R_ALPHA_GPREL16; | |
2954 | } | |
252b5132 RH |
2955 | } |
2956 | else | |
252b5132 | 2957 | { |
a7519a3c | 2958 | bfd_vma dtp_base, tp_base; |
252b5132 | 2959 | |
a7519a3c RH |
2960 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2961 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2962 | tp_base = alpha_get_tprel_base (info->link_info); | |
2963 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2964 | |
a7519a3c | 2965 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2966 | |
a7519a3c RH |
2967 | switch (r_type) |
2968 | { | |
2969 | case R_ALPHA_GOTDTPREL: | |
2970 | r_type = R_ALPHA_DTPREL16; | |
2971 | break; | |
2972 | case R_ALPHA_GOTTPREL: | |
2973 | r_type = R_ALPHA_TPREL16; | |
2974 | break; | |
2975 | default: | |
2976 | BFD_ASSERT (0); | |
2977 | return FALSE; | |
2978 | } | |
2979 | } | |
252b5132 | 2980 | |
a7519a3c | 2981 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 2982 | return TRUE; |
252b5132 | 2983 | |
a7519a3c RH |
2984 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
2985 | info->changed_contents = TRUE; | |
252b5132 | 2986 | |
a7519a3c RH |
2987 | /* Reduce the use count on this got entry by one, possibly |
2988 | eliminating it. */ | |
2989 | if (--info->gotent->use_count == 0) | |
252b5132 | 2990 | { |
a7519a3c RH |
2991 | int sz = alpha_got_entry_size (r_type); |
2992 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
2993 | if (!info->h) | |
2994 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 2995 | } |
252b5132 | 2996 | |
a7519a3c RH |
2997 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
2998 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
2999 | info->changed_relocs = TRUE; | |
3000 | ||
3001 | /* ??? Search forward through this basic block looking for insns | |
3002 | that use the target register. Stop after an insn modifying the | |
3003 | register is seen, or after a branch or call. | |
252b5132 | 3004 | |
a7519a3c RH |
3005 | Any such memory load insn may be substituted by a load directly |
3006 | off the GP. This allows the memory load insn to be issued before | |
3007 | the calculated GP register would otherwise be ready. | |
252b5132 | 3008 | |
a7519a3c RH |
3009 | Any such jsr insn can be replaced by a bsr if it is in range. |
3010 | ||
3011 | This would mean that we'd have to _add_ relocations, the pain of | |
3012 | which gives one pause. */ | |
252b5132 | 3013 | |
b34976b6 | 3014 | return TRUE; |
252b5132 RH |
3015 | } |
3016 | ||
a7519a3c RH |
3017 | static bfd_vma |
3018 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3019 | { |
a7519a3c RH |
3020 | /* If the function has the same gp, and we can identify that the |
3021 | function does not use its function pointer, we can eliminate the | |
3022 | address load. */ | |
252b5132 | 3023 | |
a7519a3c RH |
3024 | /* If the symbol is marked NOPV, we are being told the function never |
3025 | needs its procedure value. */ | |
3026 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3027 | return symval; | |
252b5132 | 3028 | |
a7519a3c RH |
3029 | /* If the symbol is marked STD_GP, we are being told the function does |
3030 | a normal ldgp in the first two words. */ | |
3031 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3032 | ; | |
252b5132 | 3033 | |
a7519a3c RH |
3034 | /* Otherwise, we may be able to identify a GP load in the first two |
3035 | words, which we can then skip. */ | |
3036 | else | |
252b5132 | 3037 | { |
a7519a3c RH |
3038 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3039 | bfd_vma ofs; | |
252b5132 | 3040 | |
a7519a3c RH |
3041 | /* Load the relocations from the section that the target symbol is in. */ |
3042 | if (info->sec == info->tsec) | |
252b5132 | 3043 | { |
a7519a3c RH |
3044 | tsec_relocs = info->relocs; |
3045 | tsec_relend = info->relend; | |
3046 | tsec_free = NULL; | |
3047 | } | |
3048 | else | |
3049 | { | |
3050 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3051 | (info->abfd, info->tsec, (PTR) NULL, | |
3052 | (Elf_Internal_Rela *) NULL, | |
3053 | info->link_info->keep_memory)); | |
3054 | if (tsec_relocs == NULL) | |
3055 | return 0; | |
3056 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3057 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3058 | } | |
252b5132 | 3059 | |
a7519a3c RH |
3060 | /* Recover the symbol's offset within the section. */ |
3061 | ofs = (symval - info->tsec->output_section->vma | |
3062 | - info->tsec->output_offset); | |
252b5132 | 3063 | |
a7519a3c RH |
3064 | /* Look for a GPDISP reloc. */ |
3065 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3066 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3067 | |
a7519a3c RH |
3068 | if (!gpdisp || gpdisp->r_addend != 4) |
3069 | { | |
3070 | if (tsec_free) | |
3071 | free (tsec_free); | |
3072 | return 0; | |
252b5132 | 3073 | } |
a7519a3c RH |
3074 | if (tsec_free) |
3075 | free (tsec_free); | |
252b5132 RH |
3076 | } |
3077 | ||
a7519a3c RH |
3078 | /* We've now determined that we can skip an initial gp load. Verify |
3079 | that the call and the target use the same gp. */ | |
f13a99db | 3080 | if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec |
a7519a3c RH |
3081 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) |
3082 | return 0; | |
252b5132 | 3083 | |
a7519a3c RH |
3084 | return symval + 8; |
3085 | } | |
252b5132 | 3086 | |
a7519a3c RH |
3087 | static bfd_boolean |
3088 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3089 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3090 | { |
a7519a3c RH |
3091 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3092 | int flags, count, i; | |
3093 | bfd_signed_vma disp; | |
3094 | bfd_boolean fits16; | |
3095 | bfd_boolean fits32; | |
3096 | bfd_boolean lit_reused = FALSE; | |
3097 | bfd_boolean all_optimized = TRUE; | |
3098 | unsigned int lit_insn; | |
252b5132 | 3099 | |
a7519a3c RH |
3100 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3101 | if (lit_insn >> 26 != OP_LDQ) | |
3102 | { | |
3103 | ((*_bfd_error_handler) | |
3104 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3105 | info->abfd, info->sec, | |
3106 | (unsigned long) irel->r_offset)); | |
3107 | return TRUE; | |
3108 | } | |
252b5132 | 3109 | |
a7519a3c RH |
3110 | /* Can't relax dynamic symbols. */ |
3111 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3112 | return TRUE; | |
3113 | ||
3114 | /* Summarize how this particular LITERAL is used. */ | |
3115 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3116 | { |
a7519a3c RH |
3117 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3118 | break; | |
8288a39e | 3119 | if (urel->r_addend <= 6) |
a7519a3c RH |
3120 | flags |= 1 << urel->r_addend; |
3121 | } | |
252b5132 | 3122 | |
a7519a3c RH |
3123 | /* A little preparation for the loop... */ |
3124 | disp = symval - info->gp; | |
252b5132 | 3125 | |
a7519a3c RH |
3126 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3127 | { | |
3128 | unsigned int insn; | |
3129 | int insn_disp; | |
3130 | bfd_signed_vma xdisp; | |
252b5132 | 3131 | |
a7519a3c | 3132 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3133 | |
a7519a3c RH |
3134 | switch (urel->r_addend) |
3135 | { | |
3136 | case LITUSE_ALPHA_ADDR: | |
3137 | default: | |
3138 | /* This type is really just a placeholder to note that all | |
3139 | uses cannot be optimized, but to still allow some. */ | |
3140 | all_optimized = FALSE; | |
3141 | break; | |
252b5132 | 3142 | |
a7519a3c RH |
3143 | case LITUSE_ALPHA_BASE: |
3144 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3145 | |
a7519a3c RH |
3146 | /* Extract the displacement from the instruction, sign-extending |
3147 | it if necessary, then test whether it is within 16 or 32 bits | |
3148 | displacement from GP. */ | |
3149 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3150 | ||
3151 | xdisp = disp + insn_disp; | |
3152 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3153 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3154 | && xdisp < 0x7fff8000); | |
3155 | ||
3156 | if (fits16) | |
3157 | { | |
3158 | /* Take the op code and dest from this insn, take the base | |
3159 | register from the literal insn. Leave the offset alone. */ | |
3160 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3161 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3162 | R_ALPHA_GPREL16); | |
3163 | urel->r_addend = irel->r_addend; | |
3164 | info->changed_relocs = TRUE; | |
252b5132 | 3165 | |
a7519a3c RH |
3166 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3167 | info->contents + urel->r_offset); | |
3168 | info->changed_contents = TRUE; | |
252b5132 | 3169 | } |
252b5132 | 3170 | |
a7519a3c RH |
3171 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3172 | else if (fits32 && !(flags & ~6)) | |
3173 | { | |
3174 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3175 | |
a7519a3c RH |
3176 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3177 | R_ALPHA_GPRELHIGH); | |
3178 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3179 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3180 | info->contents + irel->r_offset); | |
3181 | lit_reused = TRUE; | |
3182 | info->changed_contents = TRUE; | |
252b5132 | 3183 | |
a7519a3c RH |
3184 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3185 | R_ALPHA_GPRELLOW); | |
3186 | urel->r_addend = irel->r_addend; | |
3187 | info->changed_relocs = TRUE; | |
3188 | } | |
3189 | else | |
3190 | all_optimized = FALSE; | |
3191 | break; | |
252b5132 | 3192 | |
a7519a3c RH |
3193 | case LITUSE_ALPHA_BYTOFF: |
3194 | /* We can always optimize byte instructions. */ | |
252b5132 | 3195 | |
a7519a3c RH |
3196 | /* FIXME: sanity check the insn for byte op. Check that the |
3197 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3198 | |
a7519a3c RH |
3199 | insn &= ~ (unsigned) 0x001ff000; |
3200 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3201 | |
a7519a3c RH |
3202 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3203 | urel->r_addend = 0; | |
3204 | info->changed_relocs = TRUE; | |
e92d460e | 3205 | |
a7519a3c RH |
3206 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3207 | info->contents + urel->r_offset); | |
3208 | info->changed_contents = TRUE; | |
3209 | break; | |
252b5132 | 3210 | |
a7519a3c RH |
3211 | case LITUSE_ALPHA_JSR: |
3212 | case LITUSE_ALPHA_TLSGD: | |
3213 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3214 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3215 | { |
a7519a3c RH |
3216 | bfd_vma optdest, org; |
3217 | bfd_signed_vma odisp; | |
252b5132 | 3218 | |
a7519a3c RH |
3219 | /* For undefined weak symbols, we're mostly interested in getting |
3220 | rid of the got entry whenever possible, so optimize this to a | |
3221 | use of the zero register. */ | |
3222 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3223 | { | |
3224 | insn |= 31 << 16; | |
3225 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3226 | info->contents + urel->r_offset); | |
252b5132 | 3227 | |
a7519a3c RH |
3228 | info->changed_contents = TRUE; |
3229 | break; | |
3230 | } | |
252b5132 | 3231 | |
a7519a3c RH |
3232 | /* If not zero, place to jump without needing pv. */ |
3233 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3234 | org = (info->sec->output_section->vma | |
3235 | + info->sec->output_offset | |
3236 | + urel->r_offset + 4); | |
3237 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3238 | |
a7519a3c RH |
3239 | if (odisp >= -0x400000 && odisp < 0x400000) |
3240 | { | |
3241 | Elf_Internal_Rela *xrel; | |
252b5132 | 3242 | |
a7519a3c RH |
3243 | /* Preserve branch prediction call stack when possible. */ |
3244 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3245 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3246 | else | |
3247 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3248 | |
a7519a3c RH |
3249 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3250 | R_ALPHA_BRADDR); | |
3251 | urel->r_addend = irel->r_addend; | |
252b5132 | 3252 | |
a7519a3c RH |
3253 | if (optdest) |
3254 | urel->r_addend += optdest - symval; | |
3255 | else | |
3256 | all_optimized = FALSE; | |
252b5132 | 3257 | |
a7519a3c RH |
3258 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3259 | info->contents + urel->r_offset); | |
252b5132 | 3260 | |
a7519a3c RH |
3261 | /* Kill any HINT reloc that might exist for this insn. */ |
3262 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3263 | (info->relocs, info->relend, urel->r_offset, | |
3264 | R_ALPHA_HINT)); | |
3265 | if (xrel) | |
3266 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3267 | |
a7519a3c RH |
3268 | info->changed_contents = TRUE; |
3269 | info->changed_relocs = TRUE; | |
3270 | } | |
3271 | else | |
3272 | all_optimized = FALSE; | |
252b5132 | 3273 | |
a7519a3c RH |
3274 | /* Even if the target is not in range for a direct branch, |
3275 | if we share a GP, we can eliminate the gp reload. */ | |
3276 | if (optdest) | |
3277 | { | |
3278 | Elf_Internal_Rela *gpdisp | |
3279 | = (elf64_alpha_find_reloc_at_ofs | |
3280 | (info->relocs, irelend, urel->r_offset + 4, | |
3281 | R_ALPHA_GPDISP)); | |
3282 | if (gpdisp) | |
3283 | { | |
3284 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3285 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3286 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3287 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3288 | |
a7519a3c RH |
3289 | /* Verify that the instruction is "ldah $29,0($26)". |
3290 | Consider a function that ends in a noreturn call, | |
3291 | and that the next function begins with an ldgp, | |
3292 | and that by accident there is no padding between. | |
3293 | In that case the insn would use $27 as the base. */ | |
3294 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3295 | { | |
3296 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3297 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3298 | |
a7519a3c RH |
3299 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3300 | info->changed_contents = TRUE; | |
3301 | info->changed_relocs = TRUE; | |
3302 | } | |
3303 | } | |
3304 | } | |
3305 | } | |
3306 | break; | |
252b5132 | 3307 | } |
252b5132 RH |
3308 | } |
3309 | ||
a7519a3c RH |
3310 | /* If all cases were optimized, we can reduce the use count on this |
3311 | got entry by one, possibly eliminating it. */ | |
3312 | if (all_optimized) | |
252b5132 | 3313 | { |
a7519a3c | 3314 | if (--info->gotent->use_count == 0) |
252b5132 | 3315 | { |
a7519a3c RH |
3316 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3317 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3318 | if (!info->h) | |
3319 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3320 | } |
a7519a3c RH |
3321 | |
3322 | /* If the literal instruction is no longer needed (it may have been | |
3323 | reused. We can eliminate it. */ | |
3324 | /* ??? For now, I don't want to deal with compacting the section, | |
3325 | so just nop it out. */ | |
3326 | if (!lit_reused) | |
252b5132 | 3327 | { |
a7519a3c RH |
3328 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3329 | info->changed_relocs = TRUE; | |
252b5132 | 3330 | |
a7519a3c RH |
3331 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3332 | info->contents + irel->r_offset); | |
3333 | info->changed_contents = TRUE; | |
3334 | } | |
252b5132 | 3335 | |
a7519a3c RH |
3336 | return TRUE; |
3337 | } | |
3338 | else | |
3339 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3340 | } |
3341 | ||
b34976b6 | 3342 | static bfd_boolean |
a7519a3c RH |
3343 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3344 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3345 | { |
a7519a3c RH |
3346 | bfd_byte *pos[5]; |
3347 | unsigned int insn; | |
3348 | Elf_Internal_Rela *gpdisp, *hint; | |
3349 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3350 | unsigned long new_symndx; | |
f44f99a5 | 3351 | |
a7519a3c | 3352 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3353 | |
a7519a3c RH |
3354 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3355 | to use dynamic model for it. */ | |
3356 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3357 | ; | |
f44f99a5 | 3358 | |
a7519a3c RH |
3359 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3360 | then we might as well relax to IE. */ | |
3361 | else if (info->link_info->shared && !dynamic | |
3362 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3363 | ; | |
f44f99a5 | 3364 | |
a7519a3c RH |
3365 | /* Otherwise we must be building an executable to do anything. */ |
3366 | else if (info->link_info->shared) | |
3367 | return TRUE; | |
f44f99a5 | 3368 | |
a7519a3c RH |
3369 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3370 | the matching LITUSE_TLS relocations. */ | |
3371 | if (irel + 2 >= info->relend) | |
3372 | return TRUE; | |
3373 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3374 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3375 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3376 | return TRUE; | |
f44f99a5 | 3377 | |
a7519a3c RH |
3378 | /* There must be a GPDISP relocation positioned immediately after the |
3379 | LITUSE relocation. */ | |
3380 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3381 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3382 | if (!gpdisp) | |
b34976b6 | 3383 | return TRUE; |
f44f99a5 | 3384 | |
a7519a3c RH |
3385 | pos[0] = info->contents + irel[0].r_offset; |
3386 | pos[1] = info->contents + irel[1].r_offset; | |
3387 | pos[2] = info->contents + irel[2].r_offset; | |
3388 | pos[3] = info->contents + gpdisp->r_offset; | |
3389 | pos[4] = pos[3] + gpdisp->r_addend; | |
3390 | pos1_unusable = FALSE; | |
f44f99a5 | 3391 | |
a7519a3c RH |
3392 | /* Generally, the positions are not allowed to be out of order, lest the |
3393 | modified insn sequence have different register lifetimes. We can make | |
3394 | an exception when pos 1 is adjacent to pos 0. */ | |
3395 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3396 | { |
a7519a3c RH |
3397 | bfd_byte *tmp = pos[0]; |
3398 | pos[0] = pos[1]; | |
3399 | pos[1] = tmp; | |
f44f99a5 | 3400 | } |
a7519a3c RH |
3401 | else if (pos[1] < pos[0]) |
3402 | pos1_unusable = TRUE; | |
3403 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3404 | return TRUE; | |
cc03ec80 | 3405 | |
a7519a3c RH |
3406 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3407 | smash the symndx when we adjust the relocations below. */ | |
3408 | { | |
3409 | struct alpha_elf_got_entry *lit_gotent; | |
3410 | struct alpha_elf_link_hash_entry *lit_h; | |
3411 | unsigned long indx; | |
f44f99a5 | 3412 | |
a7519a3c RH |
3413 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3414 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3415 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3416 | |
a7519a3c RH |
3417 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3418 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3419 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3420 | |
a7519a3c RH |
3421 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3422 | lit_gotent = lit_gotent->next) | |
3423 | if (lit_gotent->gotobj == info->gotobj | |
3424 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3425 | && lit_gotent->addend == irel[1].r_addend) | |
3426 | break; | |
3427 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3428 | |
a7519a3c RH |
3429 | if (--lit_gotent->use_count == 0) |
3430 | { | |
3431 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3432 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3433 | } | |
3434 | } | |
252b5132 | 3435 | |
a7519a3c | 3436 | /* Change |
252b5132 | 3437 | |
a7519a3c RH |
3438 | lda $16,x($gp) !tlsgd!1 |
3439 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3440 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3441 | ldah $29,0($26) !gpdisp!2 | |
3442 | lda $29,0($29) !gpdisp!2 | |
3443 | to | |
3444 | ldq $16,x($gp) !gottprel | |
3445 | unop | |
3446 | call_pal rduniq | |
3447 | addq $16,$0,$0 | |
3448 | unop | |
3449 | or the first pair to | |
3450 | lda $16,x($gp) !tprel | |
3451 | unop | |
3452 | or | |
3453 | ldah $16,x($gp) !tprelhi | |
3454 | lda $16,x($16) !tprello | |
3455 | ||
3456 | as appropriate. */ | |
3457 | ||
3458 | use_gottprel = FALSE; | |
3459 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3460 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3461 | { |
a7519a3c RH |
3462 | case 1: |
3463 | { | |
3464 | bfd_vma tp_base; | |
3465 | bfd_signed_vma disp; | |
252b5132 | 3466 | |
a7519a3c RH |
3467 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3468 | tp_base = alpha_get_tprel_base (info->link_info); | |
3469 | disp = symval - tp_base; | |
252b5132 | 3470 | |
a7519a3c RH |
3471 | if (disp >= -0x8000 && disp < 0x8000) |
3472 | { | |
3473 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3474 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3475 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3476 | |
a7519a3c RH |
3477 | irel[0].r_offset = pos[0] - info->contents; |
3478 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3479 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3480 | break; | |
3481 | } | |
3482 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3483 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3484 | && !pos1_unusable) | |
3485 | { | |
3486 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3487 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3488 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3489 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3490 | |
a7519a3c RH |
3491 | irel[0].r_offset = pos[0] - info->contents; |
3492 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3493 | irel[1].r_offset = pos[1] - info->contents; | |
3494 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3495 | break; | |
3496 | } | |
3497 | } | |
3498 | /* FALLTHRU */ | |
3765b1be | 3499 | |
3765b1be | 3500 | default: |
a7519a3c RH |
3501 | use_gottprel = TRUE; |
3502 | ||
3503 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3504 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3505 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3506 | ||
3507 | irel[0].r_offset = pos[0] - info->contents; | |
3508 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3509 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3510 | break; | |
3765b1be | 3511 | } |
3765b1be | 3512 | |
a7519a3c | 3513 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3514 | |
a7519a3c RH |
3515 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3516 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3517 | |
a7519a3c | 3518 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3519 | |
a7519a3c RH |
3520 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3521 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3522 | |
a7519a3c RH |
3523 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3524 | irel[2].r_offset, R_ALPHA_HINT); | |
3525 | if (hint) | |
3526 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3527 | |
a7519a3c RH |
3528 | info->changed_contents = TRUE; |
3529 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3530 | |
a7519a3c RH |
3531 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3532 | if (--info->gotent->use_count == 0) | |
3765b1be | 3533 | { |
a7519a3c RH |
3534 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3535 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3536 | if (!info->h) | |
3537 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3538 | } |
252b5132 | 3539 | |
a7519a3c RH |
3540 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3541 | count on that got entry. */ | |
3542 | if (use_gottprel) | |
f44f99a5 | 3543 | { |
a7519a3c | 3544 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3545 | |
a7519a3c RH |
3546 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3547 | tprel_gotent = tprel_gotent->next) | |
3548 | if (tprel_gotent->gotobj == info->gotobj | |
3549 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3550 | && tprel_gotent->addend == irel->r_addend) | |
3551 | break; | |
3552 | if (tprel_gotent) | |
3553 | tprel_gotent->use_count++; | |
3554 | else | |
f44f99a5 | 3555 | { |
a7519a3c RH |
3556 | if (info->gotent->use_count == 0) |
3557 | tprel_gotent = info->gotent; | |
3558 | else | |
3559 | { | |
3560 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3561 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3562 | if (!tprel_gotent) | |
3563 | return FALSE; | |
f44f99a5 | 3564 | |
a7519a3c RH |
3565 | tprel_gotent->next = *info->first_gotent; |
3566 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3567 | |
a7519a3c RH |
3568 | tprel_gotent->gotobj = info->gotobj; |
3569 | tprel_gotent->addend = irel->r_addend; | |
3570 | tprel_gotent->got_offset = -1; | |
3571 | tprel_gotent->reloc_done = 0; | |
3572 | tprel_gotent->reloc_xlated = 0; | |
3573 | } | |
f44f99a5 | 3574 | |
a7519a3c RH |
3575 | tprel_gotent->use_count = 1; |
3576 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3577 | } | |
f44f99a5 | 3578 | } |
f44f99a5 | 3579 | |
b34976b6 | 3580 | return TRUE; |
f44f99a5 RH |
3581 | } |
3582 | ||
b34976b6 | 3583 | static bfd_boolean |
a7519a3c RH |
3584 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3585 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3586 | { |
a7519a3c RH |
3587 | Elf_Internal_Shdr *symtab_hdr; |
3588 | Elf_Internal_Rela *internal_relocs; | |
3589 | Elf_Internal_Rela *irel, *irelend; | |
3590 | Elf_Internal_Sym *isymbuf = NULL; | |
3591 | struct alpha_elf_got_entry **local_got_entries; | |
3592 | struct alpha_relax_info info; | |
f44f99a5 | 3593 | |
4a828aab | 3594 | /* There's nothing to change, yet. */ |
a7519a3c | 3595 | *again = FALSE; |
f44f99a5 | 3596 | |
a7519a3c RH |
3597 | if (link_info->relocatable |
3598 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3599 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3600 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3601 | return TRUE; |
3602 | ||
0ffa91dd NC |
3603 | BFD_ASSERT (is_alpha_elf (abfd)); |
3604 | ||
4a828aab RH |
3605 | /* Make sure our GOT and PLT tables are up-to-date. */ |
3606 | if (alpha_elf_hash_table(link_info)->relax_trip != link_info->relax_trip) | |
3607 | { | |
3608 | alpha_elf_hash_table(link_info)->relax_trip = link_info->relax_trip; | |
3609 | ||
3610 | /* This should never fail after the initial round, since the only | |
3611 | error is GOT overflow, and relaxation only shrinks the table. */ | |
3612 | if (!elf64_alpha_size_got_sections (link_info)) | |
3613 | abort (); | |
3614 | if (elf_hash_table (link_info)->dynamic_sections_created) | |
3615 | { | |
3616 | elf64_alpha_size_plt_section (link_info); | |
3617 | elf64_alpha_size_rela_got_section (link_info); | |
3618 | } | |
3619 | } | |
3620 | ||
0ffa91dd | 3621 | symtab_hdr = &elf_symtab_hdr (abfd); |
a7519a3c | 3622 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
252b5132 | 3623 | |
a7519a3c RH |
3624 | /* Load the relocations for this section. */ |
3625 | internal_relocs = (_bfd_elf_link_read_relocs | |
3626 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3627 | link_info->keep_memory)); | |
3628 | if (internal_relocs == NULL) | |
3629 | return FALSE; | |
252b5132 | 3630 | |
a7519a3c RH |
3631 | memset(&info, 0, sizeof (info)); |
3632 | info.abfd = abfd; | |
3633 | info.sec = sec; | |
3634 | info.link_info = link_info; | |
3635 | info.symtab_hdr = symtab_hdr; | |
3636 | info.relocs = internal_relocs; | |
3637 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3638 | ||
3639 | /* Find the GP for this object. Do not store the result back via | |
3640 | _bfd_set_gp_value, since this could change again before final. */ | |
3641 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3642 | if (info.gotobj) | |
3765b1be | 3643 | { |
a7519a3c RH |
3644 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3645 | info.gp = (sgot->output_section->vma | |
3646 | + sgot->output_offset | |
3647 | + 0x8000); | |
252b5132 RH |
3648 | } |
3649 | ||
a7519a3c RH |
3650 | /* Get the section contents. */ |
3651 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3652 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3653 | else | |
3654 | { | |
3655 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3656 | goto error_return; | |
3657 | } | |
252b5132 | 3658 | |
a7519a3c RH |
3659 | for (irel = internal_relocs; irel < irelend; irel++) |
3660 | { | |
3661 | bfd_vma symval; | |
3662 | struct alpha_elf_got_entry *gotent; | |
3663 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3664 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3665 | ||
3666 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3667 | switch (r_type) | |
3668 | { | |
3669 | case R_ALPHA_LITERAL: | |
3670 | case R_ALPHA_GPRELHIGH: | |
3671 | case R_ALPHA_GPRELLOW: | |
3672 | case R_ALPHA_GOTDTPREL: | |
3673 | case R_ALPHA_GOTTPREL: | |
3674 | case R_ALPHA_TLSGD: | |
3675 | break; | |
3676 | ||
3677 | case R_ALPHA_TLSLDM: | |
3678 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3679 | reloc to the 0 symbol so that they all match. */ | |
3680 | r_symndx = 0; | |
3681 | break; | |
3682 | ||
3683 | default: | |
3684 | continue; | |
3685 | } | |
3686 | ||
3687 | /* Get the value of the symbol referred to by the reloc. */ | |
3688 | if (r_symndx < symtab_hdr->sh_info) | |
3689 | { | |
3690 | /* A local symbol. */ | |
3691 | Elf_Internal_Sym *isym; | |
3692 | ||
3693 | /* Read this BFD's local symbols. */ | |
3694 | if (isymbuf == NULL) | |
3695 | { | |
3696 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3697 | if (isymbuf == NULL) | |
3698 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3699 | symtab_hdr->sh_info, 0, | |
3700 | NULL, NULL, NULL); | |
3701 | if (isymbuf == NULL) | |
3702 | goto error_return; | |
3703 | } | |
252b5132 | 3704 | |
a7519a3c | 3705 | isym = isymbuf + r_symndx; |
252b5132 | 3706 | |
a7519a3c RH |
3707 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3708 | means forcing the symbol value to the tp base. */ | |
3709 | if (r_type == R_ALPHA_TLSLDM) | |
3710 | { | |
3711 | info.tsec = bfd_abs_section_ptr; | |
3712 | symval = alpha_get_tprel_base (info.link_info); | |
3713 | } | |
3714 | else | |
3715 | { | |
3716 | symval = isym->st_value; | |
3717 | if (isym->st_shndx == SHN_UNDEF) | |
3718 | continue; | |
3719 | else if (isym->st_shndx == SHN_ABS) | |
3720 | info.tsec = bfd_abs_section_ptr; | |
3721 | else if (isym->st_shndx == SHN_COMMON) | |
3722 | info.tsec = bfd_com_section_ptr; | |
3723 | else | |
3724 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3725 | } | |
252b5132 | 3726 | |
a7519a3c RH |
3727 | info.h = NULL; |
3728 | info.other = isym->st_other; | |
3729 | if (local_got_entries) | |
3730 | info.first_gotent = &local_got_entries[r_symndx]; | |
3731 | else | |
3732 | { | |
3733 | info.first_gotent = &info.gotent; | |
3734 | info.gotent = NULL; | |
3735 | } | |
252b5132 | 3736 | } |
a7519a3c RH |
3737 | else |
3738 | { | |
3739 | unsigned long indx; | |
3740 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3741 | |
a7519a3c RH |
3742 | indx = r_symndx - symtab_hdr->sh_info; |
3743 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3744 | BFD_ASSERT (h != NULL); | |
252b5132 | 3745 | |
a7519a3c RH |
3746 | while (h->root.root.type == bfd_link_hash_indirect |
3747 | || h->root.root.type == bfd_link_hash_warning) | |
3748 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3749 | |
a7519a3c RH |
3750 | /* If the symbol is undefined, we can't do anything with it. */ |
3751 | if (h->root.root.type == bfd_link_hash_undefined) | |
3752 | continue; | |
252b5132 | 3753 | |
a7519a3c RH |
3754 | /* If the symbol isn't defined in the current module, |
3755 | again we can't do anything. */ | |
3756 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3757 | { | |
3758 | info.tsec = bfd_abs_section_ptr; | |
3759 | symval = 0; | |
3760 | } | |
3761 | else if (!h->root.def_regular) | |
3762 | { | |
3763 | /* Except for TLSGD relocs, which can sometimes be | |
3764 | relaxed to GOTTPREL relocs. */ | |
3765 | if (r_type != R_ALPHA_TLSGD) | |
3766 | continue; | |
3767 | info.tsec = bfd_abs_section_ptr; | |
3768 | symval = 0; | |
3769 | } | |
3770 | else | |
3771 | { | |
3772 | info.tsec = h->root.root.u.def.section; | |
3773 | symval = h->root.root.u.def.value; | |
3774 | } | |
252b5132 | 3775 | |
a7519a3c RH |
3776 | info.h = h; |
3777 | info.other = h->root.other; | |
3778 | info.first_gotent = &h->got_entries; | |
3779 | } | |
252b5132 | 3780 | |
a7519a3c RH |
3781 | /* Search for the got entry to be used by this relocation. */ |
3782 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3783 | if (gotent->gotobj == info.gotobj | |
3784 | && gotent->reloc_type == r_type | |
3785 | && gotent->addend == irel->r_addend) | |
3786 | break; | |
3787 | info.gotent = gotent; | |
252b5132 | 3788 | |
a7519a3c RH |
3789 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3790 | symval += irel->r_addend; | |
252b5132 | 3791 | |
a7519a3c | 3792 | switch (r_type) |
252b5132 | 3793 | { |
a7519a3c RH |
3794 | case R_ALPHA_LITERAL: |
3795 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3796 | |
a7519a3c RH |
3797 | /* If there exist LITUSE relocations immediately following, this |
3798 | opens up all sorts of interesting optimizations, because we | |
3799 | now know every location that this address load is used. */ | |
3800 | if (irel+1 < irelend | |
3801 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3802 | { |
a7519a3c RH |
3803 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3804 | goto error_return; | |
252b5132 | 3805 | } |
a7519a3c RH |
3806 | else |
3807 | { | |
3808 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3809 | goto error_return; | |
3810 | } | |
3811 | break; | |
252b5132 | 3812 | |
a7519a3c RH |
3813 | case R_ALPHA_GOTDTPREL: |
3814 | case R_ALPHA_GOTTPREL: | |
3815 | BFD_ASSERT(info.gotent != NULL); | |
3816 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3817 | goto error_return; | |
3818 | break; | |
3819 | ||
3820 | case R_ALPHA_TLSGD: | |
3821 | case R_ALPHA_TLSLDM: | |
3822 | BFD_ASSERT(info.gotent != NULL); | |
3823 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3824 | r_type == R_ALPHA_TLSGD)) | |
3825 | goto error_return; | |
3826 | break; | |
252b5132 RH |
3827 | } |
3828 | } | |
3829 | ||
a7519a3c RH |
3830 | if (isymbuf != NULL |
3831 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3832 | { | |
3833 | if (!link_info->keep_memory) | |
3834 | free (isymbuf); | |
3835 | else | |
252b5132 | 3836 | { |
a7519a3c RH |
3837 | /* Cache the symbols for elf_link_input_bfd. */ |
3838 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3839 | } |
a7519a3c | 3840 | } |
252b5132 | 3841 | |
a7519a3c RH |
3842 | if (info.contents != NULL |
3843 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3844 | { | |
3845 | if (!info.changed_contents && !link_info->keep_memory) | |
3846 | free (info.contents); | |
3847 | else | |
252b5132 | 3848 | { |
a7519a3c RH |
3849 | /* Cache the section contents for elf_link_input_bfd. */ |
3850 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3851 | } |
a7519a3c | 3852 | } |
252b5132 | 3853 | |
a7519a3c RH |
3854 | if (elf_section_data (sec)->relocs != internal_relocs) |
3855 | { | |
3856 | if (!info.changed_relocs) | |
3857 | free (internal_relocs); | |
3858 | else | |
3859 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3860 | } |
a7519a3c RH |
3861 | |
3862 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3863 | |
b34976b6 | 3864 | return TRUE; |
252b5132 | 3865 | |
a7519a3c RH |
3866 | error_return: |
3867 | if (isymbuf != NULL | |
3868 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3869 | free (isymbuf); | |
3870 | if (info.contents != NULL | |
3871 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3872 | free (info.contents); | |
3873 | if (internal_relocs != NULL | |
3874 | && elf_section_data (sec)->relocs != internal_relocs) | |
3875 | free (internal_relocs); | |
3876 | return FALSE; | |
3877 | } | |
3878 | \f | |
1bbc9cec RH |
3879 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3880 | into the next available slot in SREL. */ | |
3881 | ||
3882 | static void | |
a7519a3c RH |
3883 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3884 | asection *sec, asection *srel, bfd_vma offset, | |
3885 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3886 | { |
3887 | Elf_Internal_Rela outrel; | |
3888 | bfd_byte *loc; | |
3889 | ||
3890 | BFD_ASSERT (srel != NULL); | |
3891 | ||
3892 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3893 | outrel.r_addend = addend; | |
3894 | ||
3895 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3896 | if ((offset | 1) != (bfd_vma) -1) | |
3897 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3898 | else | |
3899 | memset (&outrel, 0, sizeof (outrel)); | |
3900 | ||
3901 | loc = srel->contents; | |
3902 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3903 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3904 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3905 | } |
3906 | ||
4a67a098 RH |
3907 | /* Relocate an Alpha ELF section for a relocatable link. |
3908 | ||
3909 | We don't have to change anything unless the reloc is against a section | |
3910 | symbol, in which case we have to adjust according to where the section | |
3911 | symbol winds up in the output section. */ | |
3912 | ||
b34976b6 | 3913 | static bfd_boolean |
a7519a3c RH |
3914 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3915 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3916 | bfd *input_bfd, asection *input_section, | |
3917 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3918 | Elf_Internal_Rela *relocs, | |
3919 | Elf_Internal_Sym *local_syms, | |
3920 | asection **local_sections) | |
4a67a098 RH |
3921 | { |
3922 | unsigned long symtab_hdr_sh_info; | |
3923 | Elf_Internal_Rela *rel; | |
3924 | Elf_Internal_Rela *relend; | |
ab96bf03 | 3925 | struct elf_link_hash_entry **sym_hashes; |
b34976b6 | 3926 | bfd_boolean ret_val = TRUE; |
4a67a098 | 3927 | |
0ffa91dd | 3928 | symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info; |
ab96bf03 | 3929 | sym_hashes = elf_sym_hashes (input_bfd); |
4a67a098 RH |
3930 | |
3931 | relend = relocs + input_section->reloc_count; | |
3932 | for (rel = relocs; rel < relend; rel++) | |
3933 | { | |
3934 | unsigned long r_symndx; | |
3935 | Elf_Internal_Sym *sym; | |
3936 | asection *sec; | |
3937 | unsigned long r_type; | |
3938 | ||
ab96bf03 | 3939 | r_type = ELF64_R_TYPE (rel->r_info); |
4a67a098 RH |
3940 | if (r_type >= R_ALPHA_max) |
3941 | { | |
3942 | (*_bfd_error_handler) | |
d003868e AM |
3943 | (_("%B: unknown relocation type %d"), |
3944 | input_bfd, (int) r_type); | |
4a67a098 | 3945 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3946 | ret_val = FALSE; |
4a67a098 RH |
3947 | continue; |
3948 | } | |
3949 | ||
4a67a098 RH |
3950 | /* The symbol associated with GPDISP and LITUSE is |
3951 | immaterial. Only the addend is significant. */ | |
3952 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3953 | continue; | |
3954 | ||
ab96bf03 | 3955 | r_symndx = ELF64_R_SYM (rel->r_info); |
4a67a098 RH |
3956 | if (r_symndx < symtab_hdr_sh_info) |
3957 | { | |
3958 | sym = local_syms + r_symndx; | |
ab96bf03 | 3959 | sec = local_sections[r_symndx]; |
4a67a098 | 3960 | } |
ab96bf03 AM |
3961 | else |
3962 | { | |
3963 | struct elf_link_hash_entry *h; | |
3964 | ||
3965 | h = sym_hashes[r_symndx - symtab_hdr_sh_info]; | |
3966 | ||
3967 | while (h->root.type == bfd_link_hash_indirect | |
3968 | || h->root.type == bfd_link_hash_warning) | |
3969 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3970 | ||
3971 | if (h->root.type != bfd_link_hash_defined | |
3972 | && h->root.type != bfd_link_hash_defweak) | |
3973 | continue; | |
3974 | ||
3975 | sym = NULL; | |
3976 | sec = h->root.u.def.section; | |
3977 | } | |
3978 | ||
3979 | if (sec != NULL && elf_discarded_section (sec)) | |
3980 | { | |
3981 | /* For relocs against symbols from removed linkonce sections, | |
3982 | or sections discarded by a linker script, we just want the | |
3983 | section contents zeroed. */ | |
3984 | _bfd_clear_contents (elf64_alpha_howto_table + r_type, | |
3985 | input_bfd, contents + rel->r_offset); | |
3986 | rel->r_info = 0; | |
3987 | rel->r_addend = 0; | |
3988 | continue; | |
3989 | } | |
3990 | ||
3991 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3992 | rel->r_addend += sec->output_offset; | |
4a67a098 RH |
3993 | } |
3994 | ||
3995 | return ret_val; | |
3996 | } | |
3997 | ||
252b5132 RH |
3998 | /* Relocate an Alpha ELF section. */ |
3999 | ||
b34976b6 | 4000 | static bfd_boolean |
a7519a3c RH |
4001 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
4002 | bfd *input_bfd, asection *input_section, | |
4003 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
4004 | Elf_Internal_Sym *local_syms, | |
4005 | asection **local_sections) | |
252b5132 | 4006 | { |
4a67a098 | 4007 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4008 | Elf_Internal_Rela *rel; |
4009 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4010 | asection *sgot, *srel, *srelgot; |
4011 | bfd *dynobj, *gotobj; | |
4012 | bfd_vma gp, tp_base, dtp_base; | |
4013 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4014 | bfd_boolean ret_val; |
252b5132 | 4015 | |
0ffa91dd NC |
4016 | BFD_ASSERT (is_alpha_elf (input_bfd)); |
4017 | ||
4a67a098 | 4018 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 4019 | if (info->relocatable) |
4a67a098 RH |
4020 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4021 | input_section, contents, relocs, | |
4022 | local_syms, local_sections); | |
4023 | ||
4024 | /* This is a final link. */ | |
4025 | ||
b34976b6 | 4026 | ret_val = TRUE; |
252b5132 | 4027 | |
0ffa91dd | 4028 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
3765b1be | 4029 | |
4a67a098 RH |
4030 | dynobj = elf_hash_table (info)->dynobj; |
4031 | if (dynobj) | |
4032 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4033 | else | |
4034 | srelgot = NULL; | |
4035 | ||
3241278a RH |
4036 | if (input_section->flags & SEC_ALLOC) |
4037 | { | |
4038 | const char *section_name; | |
4039 | section_name = (bfd_elf_string_from_elf_section | |
4040 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4041 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4042 | BFD_ASSERT(section_name != NULL); | |
4043 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4044 | } | |
4045 | else | |
4046 | srel = NULL; | |
3765b1be | 4047 | |
4a67a098 RH |
4048 | /* Find the gp value for this input bfd. */ |
4049 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4050 | if (gotobj) | |
4051 | { | |
4052 | sgot = alpha_elf_tdata (gotobj)->got; | |
4053 | gp = _bfd_get_gp_value (gotobj); | |
4054 | if (gp == 0) | |
252b5132 | 4055 | { |
4a67a098 RH |
4056 | gp = (sgot->output_section->vma |
4057 | + sgot->output_offset | |
4058 | + 0x8000); | |
4059 | _bfd_set_gp_value (gotobj, gp); | |
4060 | } | |
4061 | } | |
4062 | else | |
4063 | { | |
4064 | sgot = NULL; | |
4065 | gp = 0; | |
4066 | } | |
3765b1be | 4067 | |
4a67a098 RH |
4068 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4069 | ||
e1918d23 | 4070 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4071 | { |
e1918d23 AM |
4072 | dtp_base = alpha_get_dtprel_base (info); |
4073 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4074 | } |
4a67a098 RH |
4075 | else |
4076 | dtp_base = tp_base = 0; | |
252b5132 | 4077 | |
252b5132 | 4078 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4079 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4080 | { |
4a67a098 | 4081 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4082 | struct alpha_elf_got_entry *gotent; |
4083 | bfd_reloc_status_type r; | |
252b5132 RH |
4084 | reloc_howto_type *howto; |
4085 | unsigned long r_symndx; | |
4a67a098 RH |
4086 | Elf_Internal_Sym *sym = NULL; |
4087 | asection *sec = NULL; | |
3765b1be | 4088 | bfd_vma value; |
dc810e39 | 4089 | bfd_vma addend; |
b34976b6 AM |
4090 | bfd_boolean dynamic_symbol_p; |
4091 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4092 | unsigned long r_type; |
252b5132 RH |
4093 | |
4094 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4095 | if (r_type >= R_ALPHA_max) |
252b5132 | 4096 | { |
3765b1be | 4097 | (*_bfd_error_handler) |
d003868e AM |
4098 | (_("%B: unknown relocation type %d"), |
4099 | input_bfd, (int) r_type); | |
252b5132 | 4100 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4101 | ret_val = FALSE; |
3765b1be | 4102 | continue; |
252b5132 | 4103 | } |
252b5132 | 4104 | |
3765b1be | 4105 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4106 | r_symndx = ELF64_R_SYM(rel->r_info); |
4107 | ||
cc03ec80 RH |
4108 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4109 | reloc to the 0 symbol so that they all match. */ | |
4110 | if (r_type == R_ALPHA_TLSLDM) | |
4111 | r_symndx = 0; | |
4112 | ||
252b5132 RH |
4113 | if (r_symndx < symtab_hdr->sh_info) |
4114 | { | |
8517fae7 | 4115 | asection *msec; |
252b5132 RH |
4116 | sym = local_syms + r_symndx; |
4117 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4118 | msec = sec; |
4119 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4120 | |
cc03ec80 RH |
4121 | /* If this is a tp-relative relocation against sym 0, |
4122 | this is hackery from relax_section. Force the value to | |
f915360b | 4123 | be the tls module base. */ |
cc03ec80 RH |
4124 | if (r_symndx == 0 |
4125 | && (r_type == R_ALPHA_TLSLDM | |
4126 | || r_type == R_ALPHA_GOTTPREL | |
4127 | || r_type == R_ALPHA_TPREL64 | |
4128 | || r_type == R_ALPHA_TPRELHI | |
4129 | || r_type == R_ALPHA_TPRELLO | |
4130 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4131 | value = dtp_base; |
cc03ec80 | 4132 | |
4a67a098 RH |
4133 | if (local_got_entries) |
4134 | gotent = local_got_entries[r_symndx]; | |
4135 | else | |
4136 | gotent = NULL; | |
3765b1be RH |
4137 | |
4138 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4139 | unless it has been done already. */ | |
4140 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4141 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4142 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4143 | && gotent |
4144 | && !gotent->reloc_xlated) | |
3765b1be RH |
4145 | { |
4146 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4147 | |
4148 | for (ent = gotent; ent; ent = ent->next) | |
4149 | { | |
4150 | ent->reloc_xlated = 1; | |
4151 | if (ent->use_count == 0) | |
4152 | continue; | |
4153 | msec = sec; | |
4154 | ent->addend = | |
4155 | _bfd_merged_section_offset (output_bfd, &msec, | |
4156 | elf_section_data (sec)-> | |
4157 | sec_info, | |
753731ee | 4158 | sym->st_value + ent->addend); |
3765b1be RH |
4159 | ent->addend -= sym->st_value; |
4160 | ent->addend += msec->output_section->vma | |
4161 | + msec->output_offset | |
4162 | - sec->output_section->vma | |
4163 | - sec->output_offset; | |
4164 | } | |
4165 | } | |
4166 | ||
b34976b6 | 4167 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4168 | } |
4169 | else | |
4170 | { | |
560e09e9 NC |
4171 | bfd_boolean warned; |
4172 | bfd_boolean unresolved_reloc; | |
4173 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4174 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4175 | ||
4176 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4177 | r_symndx, symtab_hdr, sym_hashes, | |
4178 | hh, sec, value, | |
4179 | unresolved_reloc, warned); | |
560e09e9 NC |
4180 | |
4181 | if (warned) | |
4182 | continue; | |
252b5132 | 4183 | |
560e09e9 NC |
4184 | if (value == 0 |
4185 | && ! unresolved_reloc | |
4186 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4187 | undef_weak_ref = TRUE; |
3765b1be | 4188 | |
560e09e9 | 4189 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4190 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4191 | gotent = h->got_entries; | |
252b5132 | 4192 | } |
3765b1be | 4193 | |
ab96bf03 AM |
4194 | if (sec != NULL && elf_discarded_section (sec)) |
4195 | { | |
4196 | /* For relocs against symbols from removed linkonce sections, | |
4197 | or sections discarded by a linker script, we just want the | |
4198 | section contents zeroed. Avoid any special processing. */ | |
4199 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
4200 | rel->r_info = 0; | |
4201 | rel->r_addend = 0; | |
4202 | continue; | |
4203 | } | |
4204 | ||
252b5132 | 4205 | addend = rel->r_addend; |
3765b1be RH |
4206 | value += addend; |
4207 | ||
4208 | /* Search for the proper got entry. */ | |
4209 | for (; gotent ; gotent = gotent->next) | |
4210 | if (gotent->gotobj == gotobj | |
4211 | && gotent->reloc_type == r_type | |
4212 | && gotent->addend == addend) | |
4213 | break; | |
252b5132 RH |
4214 | |
4215 | switch (r_type) | |
4216 | { | |
4217 | case R_ALPHA_GPDISP: | |
4218 | { | |
4219 | bfd_byte *p_ldah, *p_lda; | |
4220 | ||
4221 | BFD_ASSERT(gp != 0); | |
4222 | ||
3765b1be RH |
4223 | value = (input_section->output_section->vma |
4224 | + input_section->output_offset | |
4225 | + rel->r_offset); | |
252b5132 | 4226 | |
3765b1be | 4227 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4228 | p_lda = p_ldah + rel->r_addend; |
4229 | ||
3765b1be | 4230 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4231 | p_ldah, p_lda); |
4232 | } | |
4233 | break; | |
4234 | ||
252b5132 | 4235 | case R_ALPHA_LITERAL: |
3765b1be RH |
4236 | BFD_ASSERT(sgot != NULL); |
4237 | BFD_ASSERT(gp != 0); | |
4238 | BFD_ASSERT(gotent != NULL); | |
4239 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4240 | |
3765b1be RH |
4241 | if (!gotent->reloc_done) |
4242 | { | |
4243 | gotent->reloc_done = 1; | |
252b5132 | 4244 | |
3765b1be RH |
4245 | bfd_put_64 (output_bfd, value, |
4246 | sgot->contents + gotent->got_offset); | |
252b5132 | 4247 | |
3765b1be RH |
4248 | /* If the symbol has been forced local, output a |
4249 | RELATIVE reloc, otherwise it will be handled in | |
4250 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4251 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4252 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4253 | gotent->got_offset, 0, | |
4254 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4255 | } |
252b5132 | 4256 | |
3765b1be RH |
4257 | value = (sgot->output_section->vma |
4258 | + sgot->output_offset | |
4259 | + gotent->got_offset); | |
4260 | value -= gp; | |
252b5132 RH |
4261 | goto default_reloc; |
4262 | ||
4263 | case R_ALPHA_GPREL32: | |
ec1659c8 | 4264 | case R_ALPHA_GPREL16: |
252b5132 | 4265 | case R_ALPHA_GPRELLOW: |
3765b1be | 4266 | if (dynamic_symbol_p) |
f16fbd61 RH |
4267 | { |
4268 | (*_bfd_error_handler) | |
d003868e AM |
4269 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4270 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4271 | ret_val = FALSE; |
f16fbd61 | 4272 | } |
252b5132 | 4273 | BFD_ASSERT(gp != 0); |
3765b1be | 4274 | value -= gp; |
252b5132 RH |
4275 | goto default_reloc; |
4276 | ||
4277 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4278 | if (dynamic_symbol_p) |
f16fbd61 RH |
4279 | { |
4280 | (*_bfd_error_handler) | |
d003868e AM |
4281 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4282 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4283 | ret_val = FALSE; |
f16fbd61 | 4284 | } |
252b5132 | 4285 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4286 | value -= gp; |
4287 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4288 | goto default_reloc; |
4289 | ||
252b5132 | 4290 | case R_ALPHA_HINT: |
f94952df RH |
4291 | /* A call to a dynamic symbol is definitely out of range of |
4292 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4293 | if (dynamic_symbol_p) |
f94952df RH |
4294 | { |
4295 | r = bfd_reloc_ok; | |
4296 | break; | |
4297 | } | |
3765b1be RH |
4298 | /* The regular PC-relative stuff measures from the start of |
4299 | the instruction rather than the end. */ | |
4300 | value -= 4; | |
4301 | goto default_reloc; | |
f94952df RH |
4302 | |
4303 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4304 | if (dynamic_symbol_p) |
4305 | { | |
4306 | (*_bfd_error_handler) | |
d003868e AM |
4307 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4308 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4309 | ret_val = FALSE; |
3765b1be | 4310 | } |
252b5132 RH |
4311 | /* The regular PC-relative stuff measures from the start of |
4312 | the instruction rather than the end. */ | |
3765b1be | 4313 | value -= 4; |
252b5132 RH |
4314 | goto default_reloc; |
4315 | ||
7793f4d0 RH |
4316 | case R_ALPHA_BRSGP: |
4317 | { | |
4318 | int other; | |
4319 | const char *name; | |
4320 | ||
4321 | /* The regular PC-relative stuff measures from the start of | |
4322 | the instruction rather than the end. */ | |
3765b1be | 4323 | value -= 4; |
7793f4d0 | 4324 | |
ccf00ab6 RH |
4325 | /* The source and destination gp must be the same. Note that |
4326 | the source will always have an assigned gp, since we forced | |
4327 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4328 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4329 | care not to crash if H is an undefined symbol. */ |
4330 | if (h != NULL && sec != NULL | |
4331 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4332 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4333 | { | |
7793f4d0 | 4334 | (*_bfd_error_handler) |
d003868e AM |
4335 | (_("%B: change in gp: BRSGP %s"), |
4336 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4337 | ret_val = FALSE; |
7793f4d0 RH |
4338 | } |
4339 | ||
4340 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4341 | if (h != NULL) | |
4342 | other = h->root.other; | |
4343 | else | |
4344 | other = sym->st_other; | |
4345 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4346 | { | |
4347 | case STO_ALPHA_NOPV: | |
4348 | break; | |
4349 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4350 | value += 8; |
7793f4d0 RH |
4351 | break; |
4352 | default: | |
4353 | if (h != NULL) | |
4354 | name = h->root.root.root.string; | |
4355 | else | |
4356 | { | |
4357 | name = (bfd_elf_string_from_elf_section | |
4358 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4359 | if (name == NULL) | |
4360 | name = _("<unknown>"); | |
4361 | else if (name[0] == 0) | |
4362 | name = bfd_section_name (input_bfd, sec); | |
4363 | } | |
4364 | (*_bfd_error_handler) | |
d003868e AM |
4365 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4366 | input_bfd, name); | |
b34976b6 | 4367 | ret_val = FALSE; |
7793f4d0 RH |
4368 | break; |
4369 | } | |
4370 | ||
4371 | goto default_reloc; | |
4372 | } | |
4373 | ||
252b5132 RH |
4374 | case R_ALPHA_REFLONG: |
4375 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4376 | case R_ALPHA_DTPREL64: |
4377 | case R_ALPHA_TPREL64: | |
252b5132 | 4378 | { |
1bbc9cec RH |
4379 | long dynindx, dyntype = r_type; |
4380 | bfd_vma dynaddend; | |
252b5132 RH |
4381 | |
4382 | /* Careful here to remember RELATIVE relocations for global | |
4383 | variables for symbolic shared objects. */ | |
4384 | ||
3765b1be | 4385 | if (dynamic_symbol_p) |
252b5132 RH |
4386 | { |
4387 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4388 | dynindx = h->root.dynindx; |
4389 | dynaddend = addend; | |
3765b1be RH |
4390 | addend = 0, value = 0; |
4391 | } | |
4392 | else if (r_type == R_ALPHA_DTPREL64) | |
4393 | { | |
e1918d23 | 4394 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4395 | value -= dtp_base; |
4396 | goto default_reloc; | |
4397 | } | |
4398 | else if (r_type == R_ALPHA_TPREL64) | |
4399 | { | |
e1918d23 | 4400 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4401 | if (!info->shared) |
4402 | { | |
4403 | value -= tp_base; | |
4404 | goto default_reloc; | |
4405 | } | |
4406 | dynindx = 0; | |
4407 | dynaddend = value - dtp_base; | |
252b5132 | 4408 | } |
ec338859 AM |
4409 | else if (info->shared |
4410 | && r_symndx != 0 | |
d6ad34f6 RH |
4411 | && (input_section->flags & SEC_ALLOC) |
4412 | && !undef_weak_ref) | |
252b5132 | 4413 | { |
3765b1be RH |
4414 | if (r_type == R_ALPHA_REFLONG) |
4415 | { | |
4416 | (*_bfd_error_handler) | |
d003868e AM |
4417 | (_("%B: unhandled dynamic relocation against %s"), |
4418 | input_bfd, | |
3765b1be | 4419 | h->root.root.root.string); |
b34976b6 | 4420 | ret_val = FALSE; |
3765b1be | 4421 | } |
1bbc9cec RH |
4422 | dynindx = 0; |
4423 | dyntype = R_ALPHA_RELATIVE; | |
4424 | dynaddend = value; | |
252b5132 RH |
4425 | } |
4426 | else | |
4427 | goto default_reloc; | |
4428 | ||
3241278a RH |
4429 | if (input_section->flags & SEC_ALLOC) |
4430 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4431 | srel, rel->r_offset, dynindx, | |
4432 | dyntype, dynaddend); | |
252b5132 RH |
4433 | } |
4434 | goto default_reloc; | |
4435 | ||
3765b1be | 4436 | case R_ALPHA_SREL16: |
84de6048 RH |
4437 | case R_ALPHA_SREL32: |
4438 | case R_ALPHA_SREL64: | |
3765b1be RH |
4439 | if (dynamic_symbol_p) |
4440 | { | |
4441 | (*_bfd_error_handler) | |
d003868e AM |
4442 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4443 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4444 | ret_val = FALSE; |
3765b1be | 4445 | } |
d6ad34f6 RH |
4446 | else if ((info->shared || info->pie) && undef_weak_ref) |
4447 | { | |
4448 | (*_bfd_error_handler) | |
4449 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4450 | input_bfd, h->root.root.root.string); | |
4451 | ret_val = FALSE; | |
4452 | } | |
4453 | ||
3765b1be | 4454 | |
84de6048 RH |
4455 | /* ??? .eh_frame references to discarded sections will be smashed |
4456 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4457 | NULL to be encoded as 0 in any format, so this works here. */ | |
4458 | if (r_symndx == 0) | |
4459 | howto = (elf64_alpha_howto_table | |
4460 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4461 | goto default_reloc; | |
4462 | ||
3765b1be RH |
4463 | case R_ALPHA_TLSLDM: |
4464 | /* Ignore the symbol for the relocation. The result is always | |
4465 | the current module. */ | |
4466 | dynamic_symbol_p = 0; | |
4467 | /* FALLTHRU */ | |
4468 | ||
4469 | case R_ALPHA_TLSGD: | |
4470 | if (!gotent->reloc_done) | |
4471 | { | |
4472 | gotent->reloc_done = 1; | |
4473 | ||
4474 | /* Note that the module index for the main program is 1. */ | |
4475 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4476 | sgot->contents + gotent->got_offset); | |
4477 | ||
4478 | /* If the symbol has been forced local, output a | |
4479 | DTPMOD64 reloc, otherwise it will be handled in | |
4480 | finish_dynamic_symbol. */ | |
4481 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4482 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4483 | gotent->got_offset, 0, | |
4484 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4485 | |
4486 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4487 | value = 0; | |
4488 | else | |
4489 | { | |
e1918d23 | 4490 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4491 | value -= dtp_base; |
4492 | } | |
4493 | bfd_put_64 (output_bfd, value, | |
4494 | sgot->contents + gotent->got_offset + 8); | |
4495 | } | |
4496 | ||
4497 | value = (sgot->output_section->vma | |
4498 | + sgot->output_offset | |
4499 | + gotent->got_offset); | |
4500 | value -= gp; | |
4501 | goto default_reloc; | |
4502 | ||
4503 | case R_ALPHA_DTPRELHI: | |
4504 | case R_ALPHA_DTPRELLO: | |
4505 | case R_ALPHA_DTPREL16: | |
4506 | if (dynamic_symbol_p) | |
4507 | { | |
4508 | (*_bfd_error_handler) | |
d003868e AM |
4509 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4510 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4511 | ret_val = FALSE; |
3765b1be | 4512 | } |
e1918d23 | 4513 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4514 | value -= dtp_base; |
9e756d64 RH |
4515 | if (r_type == R_ALPHA_DTPRELHI) |
4516 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4517 | goto default_reloc; |
4518 | ||
4519 | case R_ALPHA_TPRELHI: | |
4520 | case R_ALPHA_TPRELLO: | |
4521 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4522 | if (info->shared) |
4523 | { | |
4524 | (*_bfd_error_handler) | |
d003868e AM |
4525 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4526 | input_bfd); | |
b34976b6 | 4527 | ret_val = FALSE; |
9e756d64 RH |
4528 | } |
4529 | else if (dynamic_symbol_p) | |
3765b1be RH |
4530 | { |
4531 | (*_bfd_error_handler) | |
d003868e AM |
4532 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4533 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4534 | ret_val = FALSE; |
3765b1be | 4535 | } |
e1918d23 | 4536 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4537 | value -= tp_base; |
9e756d64 RH |
4538 | if (r_type == R_ALPHA_TPRELHI) |
4539 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4540 | goto default_reloc; |
4541 | ||
4542 | case R_ALPHA_GOTDTPREL: | |
4543 | case R_ALPHA_GOTTPREL: | |
4544 | BFD_ASSERT(sgot != NULL); | |
4545 | BFD_ASSERT(gp != 0); | |
4546 | BFD_ASSERT(gotent != NULL); | |
4547 | BFD_ASSERT(gotent->use_count >= 1); | |
4548 | ||
4549 | if (!gotent->reloc_done) | |
4550 | { | |
4551 | gotent->reloc_done = 1; | |
4552 | ||
4553 | if (dynamic_symbol_p) | |
4554 | value = 0; | |
4555 | else | |
4556 | { | |
e1918d23 | 4557 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4558 | if (r_type == R_ALPHA_GOTDTPREL) |
4559 | value -= dtp_base; | |
4560 | else if (!info->shared) | |
4561 | value -= tp_base; | |
4562 | else | |
4563 | { | |
4564 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4565 | gotent->got_offset, 0, | |
4566 | R_ALPHA_TPREL64, | |
4567 | value - dtp_base); | |
4568 | value = 0; | |
4569 | } | |
3765b1be RH |
4570 | } |
4571 | bfd_put_64 (output_bfd, value, | |
4572 | sgot->contents + gotent->got_offset); | |
4573 | } | |
4574 | ||
4575 | value = (sgot->output_section->vma | |
4576 | + sgot->output_offset | |
4577 | + gotent->got_offset); | |
4578 | value -= gp; | |
4579 | goto default_reloc; | |
4580 | ||
252b5132 RH |
4581 | default: |
4582 | default_reloc: | |
4583 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4584 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4585 | break; |
4586 | } | |
4587 | ||
4588 | switch (r) | |
4589 | { | |
4590 | case bfd_reloc_ok: | |
4591 | break; | |
4592 | ||
4593 | case bfd_reloc_overflow: | |
4594 | { | |
4595 | const char *name; | |
4596 | ||
ed4de5e2 JJ |
4597 | /* Don't warn if the overflow is due to pc relative reloc |
4598 | against discarded section. Section optimization code should | |
4599 | handle it. */ | |
4600 | ||
4601 | if (r_symndx < symtab_hdr->sh_info | |
4602 | && sec != NULL && howto->pc_relative | |
4603 | && elf_discarded_section (sec)) | |
4604 | break; | |
4605 | ||
252b5132 | 4606 | if (h != NULL) |
dfeffb9f | 4607 | name = NULL; |
252b5132 RH |
4608 | else |
4609 | { | |
4610 | name = (bfd_elf_string_from_elf_section | |
4611 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4612 | if (name == NULL) | |
b34976b6 | 4613 | return FALSE; |
252b5132 RH |
4614 | if (*name == '\0') |
4615 | name = bfd_section_name (input_bfd, sec); | |
4616 | } | |
4617 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4618 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4619 | (bfd_vma) 0, input_bfd, input_section, | |
4620 | rel->r_offset))) | |
b34976b6 | 4621 | ret_val = FALSE; |
252b5132 RH |
4622 | } |
4623 | break; | |
4624 | ||
4625 | default: | |
4626 | case bfd_reloc_outofrange: | |
4627 | abort (); | |
4628 | } | |
4629 | } | |
4630 | ||
f16fbd61 | 4631 | return ret_val; |
252b5132 RH |
4632 | } |
4633 | ||
4634 | /* Finish up dynamic symbol handling. We set the contents of various | |
4635 | dynamic sections here. */ | |
4636 | ||
b34976b6 | 4637 | static bfd_boolean |
a7519a3c RH |
4638 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4639 | struct elf_link_hash_entry *h, | |
4640 | Elf_Internal_Sym *sym) | |
252b5132 | 4641 | { |
6ec7057a | 4642 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 RH |
4643 | bfd *dynobj = elf_hash_table(info)->dynobj; |
4644 | ||
6ec7057a | 4645 | if (h->needs_plt) |
252b5132 RH |
4646 | { |
4647 | /* Fill in the .plt entry for this symbol. */ | |
4648 | asection *splt, *sgot, *srel; | |
4649 | Elf_Internal_Rela outrel; | |
947216bf | 4650 | bfd_byte *loc; |
252b5132 RH |
4651 | bfd_vma got_addr, plt_addr; |
4652 | bfd_vma plt_index; | |
4653 | struct alpha_elf_got_entry *gotent; | |
4654 | ||
4655 | BFD_ASSERT (h->dynindx != -1); | |
4656 | ||
252b5132 RH |
4657 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
4658 | BFD_ASSERT (splt != NULL); | |
4659 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4660 | BFD_ASSERT (srel != NULL); | |
252b5132 | 4661 | |
6ec7057a RH |
4662 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4663 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4664 | && gotent->use_count > 0) | |
4665 | { | |
4666 | unsigned int insn; | |
4667 | int disp; | |
252b5132 | 4668 | |
6ec7057a RH |
4669 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4670 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4671 | |
6ec7057a RH |
4672 | BFD_ASSERT (gotent->got_offset != -1); |
4673 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4674 | |
6ec7057a RH |
4675 | got_addr = (sgot->output_section->vma |
4676 | + sgot->output_offset | |
4677 | + gotent->got_offset); | |
4678 | plt_addr = (splt->output_section->vma | |
4679 | + splt->output_offset | |
4680 | + gotent->plt_offset); | |
252b5132 | 4681 | |
6ec7057a | 4682 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4683 | |
6ec7057a RH |
4684 | /* Fill in the entry in the procedure linkage table. */ |
4685 | if (elf64_alpha_use_secureplt) | |
4686 | { | |
4687 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4688 | insn = INSN_AD (INSN_BR, 31, disp); | |
4689 | bfd_put_32 (output_bfd, insn, | |
4690 | splt->contents + gotent->plt_offset); | |
252b5132 | 4691 | |
6ec7057a RH |
4692 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4693 | / NEW_PLT_ENTRY_SIZE); | |
4694 | } | |
4695 | else | |
4696 | { | |
4697 | disp = -(gotent->plt_offset + 4); | |
4698 | insn = INSN_AD (INSN_BR, 28, disp); | |
4699 | bfd_put_32 (output_bfd, insn, | |
4700 | splt->contents + gotent->plt_offset); | |
4701 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4702 | splt->contents + gotent->plt_offset + 4); | |
4703 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4704 | splt->contents + gotent->plt_offset + 8); | |
4705 | ||
4706 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4707 | / OLD_PLT_ENTRY_SIZE); | |
4708 | } | |
252b5132 | 4709 | |
6ec7057a RH |
4710 | /* Fill in the entry in the .rela.plt section. */ |
4711 | outrel.r_offset = got_addr; | |
4712 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4713 | outrel.r_addend = 0; | |
252b5132 | 4714 | |
6ec7057a RH |
4715 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4716 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4717 | |
6ec7057a RH |
4718 | /* Fill in the entry in the .got. */ |
4719 | bfd_put_64 (output_bfd, plt_addr, | |
4720 | sgot->contents + gotent->got_offset); | |
4721 | } | |
252b5132 RH |
4722 | } |
4723 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4724 | { | |
4725 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4726 | asection *srel; | |
252b5132 RH |
4727 | struct alpha_elf_got_entry *gotent; |
4728 | ||
4729 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4730 | BFD_ASSERT (srel != NULL); | |
4731 | ||
252b5132 RH |
4732 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4733 | gotent != NULL; | |
4734 | gotent = gotent->next) | |
4735 | { | |
f44f99a5 | 4736 | asection *sgot; |
1bbc9cec | 4737 | long r_type; |
3765b1be | 4738 | |
f44f99a5 RH |
4739 | if (gotent->use_count == 0) |
4740 | continue; | |
4741 | ||
4742 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4743 | |
4744 | r_type = gotent->reloc_type; | |
4745 | switch (r_type) | |
4746 | { | |
4747 | case R_ALPHA_LITERAL: | |
4748 | r_type = R_ALPHA_GLOB_DAT; | |
4749 | break; | |
4750 | case R_ALPHA_TLSGD: | |
4751 | r_type = R_ALPHA_DTPMOD64; | |
4752 | break; | |
4753 | case R_ALPHA_GOTDTPREL: | |
4754 | r_type = R_ALPHA_DTPREL64; | |
4755 | break; | |
4756 | case R_ALPHA_GOTTPREL: | |
4757 | r_type = R_ALPHA_TPREL64; | |
4758 | break; | |
4759 | case R_ALPHA_TLSLDM: | |
4760 | default: | |
4761 | abort (); | |
4762 | } | |
4763 | ||
1bbc9cec RH |
4764 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4765 | gotent->got_offset, h->dynindx, | |
4766 | r_type, gotent->addend); | |
3765b1be RH |
4767 | |
4768 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4769 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4770 | gotent->got_offset + 8, h->dynindx, | |
4771 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4772 | } |
4773 | } | |
4774 | ||
4775 | /* Mark some specially defined symbols as absolute. */ | |
4776 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 RS |
4777 | || h == elf_hash_table (info)->hgot |
4778 | || h == elf_hash_table (info)->hplt) | |
252b5132 RH |
4779 | sym->st_shndx = SHN_ABS; |
4780 | ||
b34976b6 | 4781 | return TRUE; |
252b5132 RH |
4782 | } |
4783 | ||
4784 | /* Finish up the dynamic sections. */ | |
4785 | ||
b34976b6 | 4786 | static bfd_boolean |
a7519a3c RH |
4787 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4788 | struct bfd_link_info *info) | |
252b5132 RH |
4789 | { |
4790 | bfd *dynobj; | |
4791 | asection *sdyn; | |
4792 | ||
4793 | dynobj = elf_hash_table (info)->dynobj; | |
4794 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4795 | ||
4796 | if (elf_hash_table (info)->dynamic_sections_created) | |
4797 | { | |
6ec7057a | 4798 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4799 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4800 | bfd_vma plt_vma, gotplt_vma; |
252b5132 RH |
4801 | |
4802 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6ec7057a | 4803 | srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
252b5132 RH |
4804 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4805 | ||
6ec7057a RH |
4806 | plt_vma = splt->output_section->vma + splt->output_offset; |
4807 | ||
4808 | gotplt_vma = 0; | |
4809 | if (elf64_alpha_use_secureplt) | |
4810 | { | |
4811 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4812 | BFD_ASSERT (sgotplt != NULL); | |
4813 | if (sgotplt->size > 0) | |
4814 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4815 | } | |
4816 | ||
252b5132 | 4817 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4818 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4819 | for (; dyncon < dynconend; dyncon++) |
4820 | { | |
4821 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4822 | |
4823 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4824 | ||
4825 | switch (dyn.d_tag) | |
4826 | { | |
4827 | case DT_PLTGOT: | |
6ec7057a RH |
4828 | dyn.d_un.d_ptr |
4829 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4830 | break; | |
252b5132 | 4831 | case DT_PLTRELSZ: |
6ec7057a RH |
4832 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
4833 | break; | |
252b5132 | 4834 | case DT_JMPREL: |
6ec7057a RH |
4835 | dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; |
4836 | break; | |
252b5132 RH |
4837 | |
4838 | case DT_RELASZ: | |
4839 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4840 | that RELASZ should not include JMPREL. This is not what | |
4841 | the rest of the BFD does. It is, however, what the | |
4842 | glibc ld.so wants. Do this fixup here until we found | |
4843 | out who is right. */ | |
6ec7057a RH |
4844 | if (srelaplt) |
4845 | dyn.d_un.d_val -= srelaplt->size; | |
252b5132 RH |
4846 | break; |
4847 | } | |
4848 | ||
4849 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4850 | } | |
4851 | ||
6ec7057a | 4852 | /* Initialize the plt header. */ |
eea6121a | 4853 | if (splt->size > 0) |
252b5132 | 4854 | { |
6ec7057a RH |
4855 | unsigned int insn; |
4856 | int ofs; | |
4857 | ||
4858 | if (elf64_alpha_use_secureplt) | |
4859 | { | |
4860 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
4861 | ||
4862 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
4863 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4864 | ||
4865 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
4866 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4867 | ||
4868 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
4869 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4870 | ||
4871 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
4872 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4873 | ||
4874 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
4875 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
4876 | ||
4877 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
4878 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
4879 | ||
4880 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
4881 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
4882 | ||
4883 | insn = INSN_AB (INSN_JMP, 31, 27); | |
4884 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
4885 | ||
4886 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
4887 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
4888 | } | |
4889 | else | |
4890 | { | |
4891 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
4892 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4893 | ||
4894 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
4895 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4896 | ||
4897 | insn = INSN_UNOP; | |
4898 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4899 | ||
4900 | insn = INSN_AB (INSN_JMP, 27, 27); | |
4901 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4902 | ||
4903 | /* The next two words will be filled in by ld.so. */ | |
4904 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
4905 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
4906 | } | |
252b5132 | 4907 | |
eecdbe52 | 4908 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4909 | } |
4910 | } | |
4911 | ||
b34976b6 | 4912 | return TRUE; |
252b5132 RH |
4913 | } |
4914 | ||
96e2734b RH |
4915 | /* We need to use a special link routine to handle the .mdebug section. |
4916 | We need to merge all instances of these sections together, not write | |
4917 | them all out sequentially. */ | |
252b5132 | 4918 | |
b34976b6 | 4919 | static bfd_boolean |
a7519a3c | 4920 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4921 | { |
4922 | asection *o; | |
4923 | struct bfd_link_order *p; | |
96e2734b | 4924 | asection *mdebug_sec; |
252b5132 RH |
4925 | struct ecoff_debug_info debug; |
4926 | const struct ecoff_debug_swap *swap | |
4927 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4928 | HDRR *symhdr = &debug.symbolic_header; | |
4929 | PTR mdebug_handle = NULL; | |
4930 | ||
96e2734b | 4931 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4932 | mdebug_sec = NULL; |
252b5132 RH |
4933 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4934 | { | |
252b5132 RH |
4935 | if (strcmp (o->name, ".mdebug") == 0) |
4936 | { | |
4937 | struct extsym_info einfo; | |
4938 | ||
4939 | /* We have found the .mdebug section in the output file. | |
4940 | Look through all the link_orders comprising it and merge | |
4941 | the information together. */ | |
4942 | symhdr->magic = swap->sym_magic; | |
4943 | /* FIXME: What should the version stamp be? */ | |
4944 | symhdr->vstamp = 0; | |
4945 | symhdr->ilineMax = 0; | |
4946 | symhdr->cbLine = 0; | |
4947 | symhdr->idnMax = 0; | |
4948 | symhdr->ipdMax = 0; | |
4949 | symhdr->isymMax = 0; | |
4950 | symhdr->ioptMax = 0; | |
4951 | symhdr->iauxMax = 0; | |
4952 | symhdr->issMax = 0; | |
4953 | symhdr->issExtMax = 0; | |
4954 | symhdr->ifdMax = 0; | |
4955 | symhdr->crfd = 0; | |
4956 | symhdr->iextMax = 0; | |
4957 | ||
4958 | /* We accumulate the debugging information itself in the | |
4959 | debug_info structure. */ | |
4960 | debug.line = NULL; | |
4961 | debug.external_dnr = NULL; | |
4962 | debug.external_pdr = NULL; | |
4963 | debug.external_sym = NULL; | |
4964 | debug.external_opt = NULL; | |
4965 | debug.external_aux = NULL; | |
4966 | debug.ss = NULL; | |
4967 | debug.ssext = debug.ssext_end = NULL; | |
4968 | debug.external_fdr = NULL; | |
4969 | debug.external_rfd = NULL; | |
4970 | debug.external_ext = debug.external_ext_end = NULL; | |
4971 | ||
4972 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4973 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4974 | return FALSE; |
252b5132 RH |
4975 | |
4976 | if (1) | |
4977 | { | |
4978 | asection *s; | |
4979 | EXTR esym; | |
52b9d213 | 4980 | bfd_vma last = 0; |
252b5132 RH |
4981 | unsigned int i; |
4982 | static const char * const name[] = | |
4983 | { | |
4984 | ".text", ".init", ".fini", ".data", | |
4985 | ".rodata", ".sdata", ".sbss", ".bss" | |
4986 | }; | |
4987 | static const int sc[] = { scText, scInit, scFini, scData, | |
4988 | scRData, scSData, scSBss, scBss }; | |
4989 | ||
4990 | esym.jmptbl = 0; | |
4991 | esym.cobol_main = 0; | |
4992 | esym.weakext = 0; | |
4993 | esym.reserved = 0; | |
4994 | esym.ifd = ifdNil; | |
4995 | esym.asym.iss = issNil; | |
4996 | esym.asym.st = stLocal; | |
4997 | esym.asym.reserved = 0; | |
4998 | esym.asym.index = indexNil; | |
4999 | for (i = 0; i < 8; i++) | |
5000 | { | |
5001 | esym.asym.sc = sc[i]; | |
5002 | s = bfd_get_section_by_name (abfd, name[i]); | |
5003 | if (s != NULL) | |
5004 | { | |
5005 | esym.asym.value = s->vma; | |
eea6121a | 5006 | last = s->vma + s->size; |
252b5132 RH |
5007 | } |
5008 | else | |
5009 | esym.asym.value = last; | |
5010 | ||
5011 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5012 | name[i], &esym)) | |
b34976b6 | 5013 | return FALSE; |
252b5132 RH |
5014 | } |
5015 | } | |
5016 | ||
8423293d | 5017 | for (p = o->map_head.link_order; |
252b5132 RH |
5018 | p != (struct bfd_link_order *) NULL; |
5019 | p = p->next) | |
5020 | { | |
5021 | asection *input_section; | |
5022 | bfd *input_bfd; | |
5023 | const struct ecoff_debug_swap *input_swap; | |
5024 | struct ecoff_debug_info input_debug; | |
5025 | char *eraw_src; | |
5026 | char *eraw_end; | |
5027 | ||
5028 | if (p->type != bfd_indirect_link_order) | |
5029 | { | |
fd96f80f | 5030 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5031 | continue; |
5032 | abort (); | |
5033 | } | |
5034 | ||
5035 | input_section = p->u.indirect.section; | |
5036 | input_bfd = input_section->owner; | |
5037 | ||
0ffa91dd NC |
5038 | if (! is_alpha_elf (input_bfd)) |
5039 | /* I don't know what a non ALPHA ELF bfd would be | |
5040 | doing with a .mdebug section, but I don't really | |
5041 | want to deal with it. */ | |
5042 | continue; | |
252b5132 RH |
5043 | |
5044 | input_swap = (get_elf_backend_data (input_bfd) | |
5045 | ->elf_backend_ecoff_debug_swap); | |
5046 | ||
eea6121a | 5047 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5048 | |
5049 | /* The ECOFF linking code expects that we have already | |
5050 | read in the debugging information and set up an | |
5051 | ecoff_debug_info structure, so we do that now. */ | |
5052 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5053 | &input_debug)) | |
b34976b6 | 5054 | return FALSE; |
252b5132 RH |
5055 | |
5056 | if (! (bfd_ecoff_debug_accumulate | |
5057 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5058 | &input_debug, input_swap, info))) | |
b34976b6 | 5059 | return FALSE; |
252b5132 RH |
5060 | |
5061 | /* Loop through the external symbols. For each one with | |
5062 | interesting information, try to find the symbol in | |
5063 | the linker global hash table and save the information | |
5064 | for the output external symbols. */ | |
5065 | eraw_src = input_debug.external_ext; | |
5066 | eraw_end = (eraw_src | |
5067 | + (input_debug.symbolic_header.iextMax | |
5068 | * input_swap->external_ext_size)); | |
5069 | for (; | |
5070 | eraw_src < eraw_end; | |
5071 | eraw_src += input_swap->external_ext_size) | |
5072 | { | |
5073 | EXTR ext; | |
5074 | const char *name; | |
5075 | struct alpha_elf_link_hash_entry *h; | |
5076 | ||
5077 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5078 | if (ext.asym.sc == scNil | |
5079 | || ext.asym.sc == scUndefined | |
5080 | || ext.asym.sc == scSUndefined) | |
5081 | continue; | |
5082 | ||
5083 | name = input_debug.ssext + ext.asym.iss; | |
5084 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5085 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5086 | if (h == NULL || h->esym.ifd != -2) |
5087 | continue; | |
5088 | ||
5089 | if (ext.ifd != -1) | |
5090 | { | |
5091 | BFD_ASSERT (ext.ifd | |
5092 | < input_debug.symbolic_header.ifdMax); | |
5093 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5094 | } | |
5095 | ||
5096 | h->esym = ext; | |
5097 | } | |
5098 | ||
5099 | /* Free up the information we just read. */ | |
5100 | free (input_debug.line); | |
5101 | free (input_debug.external_dnr); | |
5102 | free (input_debug.external_pdr); | |
5103 | free (input_debug.external_sym); | |
5104 | free (input_debug.external_opt); | |
5105 | free (input_debug.external_aux); | |
5106 | free (input_debug.ss); | |
5107 | free (input_debug.ssext); | |
5108 | free (input_debug.external_fdr); | |
5109 | free (input_debug.external_rfd); | |
5110 | free (input_debug.external_ext); | |
5111 | ||
5112 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5113 | elf_link_input_bfd ignores this section. */ | |
5114 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5115 | } | |
5116 | ||
252b5132 RH |
5117 | /* Build the external symbol information. */ |
5118 | einfo.abfd = abfd; | |
5119 | einfo.info = info; | |
5120 | einfo.debug = &debug; | |
5121 | einfo.swap = swap; | |
b34976b6 | 5122 | einfo.failed = FALSE; |
252b5132 RH |
5123 | elf_link_hash_traverse (elf_hash_table (info), |
5124 | elf64_alpha_output_extsym, | |
5125 | (PTR) &einfo); | |
5126 | if (einfo.failed) | |
b34976b6 | 5127 | return FALSE; |
252b5132 RH |
5128 | |
5129 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5130 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5131 | |
5132 | /* Skip this section later on (I don't think this currently | |
5133 | matters, but someday it might). */ | |
8423293d | 5134 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5135 | |
5136 | mdebug_sec = o; | |
5137 | } | |
252b5132 RH |
5138 | } |
5139 | ||
5140 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5141 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5142 | return FALSE; |
252b5132 RH |
5143 | |
5144 | /* Now write out the computed sections. */ | |
5145 | ||
5146 | /* The .got subsections... */ | |
5147 | { | |
5148 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5149 | for (i = alpha_elf_hash_table(info)->got_list; | |
5150 | i != NULL; | |
5151 | i = alpha_elf_tdata(i)->got_link_next) | |
5152 | { | |
5153 | asection *sgot; | |
5154 | ||
5155 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5156 | if (i == dynobj) | |
5157 | continue; | |
5158 | ||
5159 | sgot = alpha_elf_tdata(i)->got; | |
5160 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5161 | sgot->contents, |
5162 | (file_ptr) sgot->output_offset, | |
eea6121a | 5163 | sgot->size)) |
b34976b6 | 5164 | return FALSE; |
252b5132 RH |
5165 | } |
5166 | } | |
5167 | ||
252b5132 RH |
5168 | if (mdebug_sec != (asection *) NULL) |
5169 | { | |
5170 | BFD_ASSERT (abfd->output_has_begun); | |
5171 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5172 | swap, info, | |
5173 | mdebug_sec->filepos)) | |
b34976b6 | 5174 | return FALSE; |
252b5132 RH |
5175 | |
5176 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5177 | } | |
5178 | ||
b34976b6 | 5179 | return TRUE; |
252b5132 | 5180 | } |
fcfbdf31 JJ |
5181 | |
5182 | static enum elf_reloc_type_class | |
a7519a3c | 5183 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5184 | { |
f51e552e | 5185 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5186 | { |
5187 | case R_ALPHA_RELATIVE: | |
5188 | return reloc_class_relative; | |
5189 | case R_ALPHA_JMP_SLOT: | |
5190 | return reloc_class_plt; | |
5191 | case R_ALPHA_COPY: | |
5192 | return reloc_class_copy; | |
5193 | default: | |
5194 | return reloc_class_normal; | |
5195 | } | |
5196 | } | |
252b5132 | 5197 | \f |
b35d266b | 5198 | static const struct bfd_elf_special_section elf64_alpha_special_sections[] = |
2f89ff8d | 5199 | { |
0112cd26 NC |
5200 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5201 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5202 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5203 | }; |
5204 | ||
252b5132 RH |
5205 | /* ECOFF swapping routines. These are used when dealing with the |
5206 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5207 | from elf32-mips.c. */ |
252b5132 RH |
5208 | static const struct ecoff_debug_swap |
5209 | elf64_alpha_ecoff_debug_swap = | |
5210 | { | |
5211 | /* Symbol table magic number. */ | |
5212 | magicSym2, | |
5213 | /* Alignment of debugging information. E.g., 4. */ | |
5214 | 8, | |
5215 | /* Sizes of external symbolic information. */ | |
5216 | sizeof (struct hdr_ext), | |
5217 | sizeof (struct dnr_ext), | |
5218 | sizeof (struct pdr_ext), | |
5219 | sizeof (struct sym_ext), | |
5220 | sizeof (struct opt_ext), | |
5221 | sizeof (struct fdr_ext), | |
5222 | sizeof (struct rfd_ext), | |
5223 | sizeof (struct ext_ext), | |
5224 | /* Functions to swap in external symbolic data. */ | |
5225 | ecoff_swap_hdr_in, | |
5226 | ecoff_swap_dnr_in, | |
5227 | ecoff_swap_pdr_in, | |
5228 | ecoff_swap_sym_in, | |
5229 | ecoff_swap_opt_in, | |
5230 | ecoff_swap_fdr_in, | |
5231 | ecoff_swap_rfd_in, | |
5232 | ecoff_swap_ext_in, | |
5233 | _bfd_ecoff_swap_tir_in, | |
5234 | _bfd_ecoff_swap_rndx_in, | |
5235 | /* Functions to swap out external symbolic data. */ | |
5236 | ecoff_swap_hdr_out, | |
5237 | ecoff_swap_dnr_out, | |
5238 | ecoff_swap_pdr_out, | |
5239 | ecoff_swap_sym_out, | |
5240 | ecoff_swap_opt_out, | |
5241 | ecoff_swap_fdr_out, | |
5242 | ecoff_swap_rfd_out, | |
5243 | ecoff_swap_ext_out, | |
5244 | _bfd_ecoff_swap_tir_out, | |
5245 | _bfd_ecoff_swap_rndx_out, | |
5246 | /* Function to read in symbolic data. */ | |
5247 | elf64_alpha_read_ecoff_info | |
5248 | }; | |
5249 | \f | |
70bcb145 JW |
5250 | /* Use a non-standard hash bucket size of 8. */ |
5251 | ||
562ace6b | 5252 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5253 | { |
5254 | sizeof (Elf64_External_Ehdr), | |
5255 | sizeof (Elf64_External_Phdr), | |
5256 | sizeof (Elf64_External_Shdr), | |
5257 | sizeof (Elf64_External_Rel), | |
5258 | sizeof (Elf64_External_Rela), | |
5259 | sizeof (Elf64_External_Sym), | |
5260 | sizeof (Elf64_External_Dyn), | |
5261 | sizeof (Elf_External_Note), | |
5262 | 8, | |
5263 | 1, | |
45d6a902 | 5264 | 64, 3, |
70bcb145 JW |
5265 | ELFCLASS64, EV_CURRENT, |
5266 | bfd_elf64_write_out_phdrs, | |
5267 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 5268 | bfd_elf64_checksum_contents, |
70bcb145 | 5269 | bfd_elf64_write_relocs, |
73ff0d56 | 5270 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5271 | bfd_elf64_swap_symbol_out, |
5272 | bfd_elf64_slurp_reloc_table, | |
5273 | bfd_elf64_slurp_symbol_table, | |
5274 | bfd_elf64_swap_dyn_in, | |
5275 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5276 | bfd_elf64_swap_reloc_in, |
5277 | bfd_elf64_swap_reloc_out, | |
5278 | bfd_elf64_swap_reloca_in, | |
5279 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5280 | }; |
5281 | ||
252b5132 RH |
5282 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5283 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5284 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5285 | #define ELF_MACHINE_CODE EM_ALPHA |
5286 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 5287 | #define ELF_COMMONPAGESIZE 0x2000 |
252b5132 RH |
5288 | |
5289 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5290 | elf64_alpha_bfd_link_hash_table_create | |
5291 | ||
5292 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5293 | elf64_alpha_bfd_reloc_type_lookup | |
157090f7 AM |
5294 | #define bfd_elf64_bfd_reloc_name_lookup \ |
5295 | elf64_alpha_bfd_reloc_name_lookup | |
252b5132 RH |
5296 | #define elf_info_to_howto \ |
5297 | elf64_alpha_info_to_howto | |
5298 | ||
5299 | #define bfd_elf64_mkobject \ | |
5300 | elf64_alpha_mkobject | |
5301 | #define elf_backend_object_p \ | |
5302 | elf64_alpha_object_p | |
5303 | ||
5304 | #define elf_backend_section_from_shdr \ | |
5305 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5306 | #define elf_backend_section_flags \ |
5307 | elf64_alpha_section_flags | |
252b5132 RH |
5308 | #define elf_backend_fake_sections \ |
5309 | elf64_alpha_fake_sections | |
5310 | ||
5311 | #define bfd_elf64_bfd_is_local_label_name \ | |
5312 | elf64_alpha_is_local_label_name | |
5313 | #define bfd_elf64_find_nearest_line \ | |
5314 | elf64_alpha_find_nearest_line | |
5315 | #define bfd_elf64_bfd_relax_section \ | |
5316 | elf64_alpha_relax_section | |
5317 | ||
5318 | #define elf_backend_add_symbol_hook \ | |
5319 | elf64_alpha_add_symbol_hook | |
13285a1b AM |
5320 | #define elf_backend_relocs_compatible \ |
5321 | _bfd_elf_relocs_compatible | |
252b5132 RH |
5322 | #define elf_backend_check_relocs \ |
5323 | elf64_alpha_check_relocs | |
5324 | #define elf_backend_create_dynamic_sections \ | |
5325 | elf64_alpha_create_dynamic_sections | |
5326 | #define elf_backend_adjust_dynamic_symbol \ | |
5327 | elf64_alpha_adjust_dynamic_symbol | |
747ffa7b AM |
5328 | #define elf_backend_merge_symbol_attribute \ |
5329 | elf64_alpha_merge_symbol_attribute | |
252b5132 RH |
5330 | #define elf_backend_always_size_sections \ |
5331 | elf64_alpha_always_size_sections | |
5332 | #define elf_backend_size_dynamic_sections \ | |
5333 | elf64_alpha_size_dynamic_sections | |
74541ad4 AM |
5334 | #define elf_backend_omit_section_dynsym \ |
5335 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
252b5132 RH |
5336 | #define elf_backend_relocate_section \ |
5337 | elf64_alpha_relocate_section | |
5338 | #define elf_backend_finish_dynamic_symbol \ | |
5339 | elf64_alpha_finish_dynamic_symbol | |
5340 | #define elf_backend_finish_dynamic_sections \ | |
5341 | elf64_alpha_finish_dynamic_sections | |
5342 | #define bfd_elf64_bfd_final_link \ | |
5343 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5344 | #define elf_backend_reloc_type_class \ |
5345 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5346 | |
5347 | #define elf_backend_ecoff_debug_swap \ | |
5348 | &elf64_alpha_ecoff_debug_swap | |
5349 | ||
70bcb145 JW |
5350 | #define elf_backend_size_info \ |
5351 | alpha_elf_size_info | |
5352 | ||
29ef7005 L |
5353 | #define elf_backend_special_sections \ |
5354 | elf64_alpha_special_sections | |
2f89ff8d | 5355 | |
38b1a46c | 5356 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5357 | #define elf_backend_want_got_plt 0 |
5358 | #define elf_backend_plt_readonly 0 | |
5359 | #define elf_backend_want_plt_sym 1 | |
5360 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5361 | |
5362 | #include "elf64-target.h" | |
2238051f RH |
5363 | \f |
5364 | /* FreeBSD support. */ | |
5365 | ||
5366 | #undef TARGET_LITTLE_SYM | |
5367 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5368 | #undef TARGET_LITTLE_NAME | |
5369 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
d1036acb L |
5370 | #undef ELF_OSABI |
5371 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2238051f RH |
5372 | |
5373 | /* The kernel recognizes executables as valid only if they carry a | |
5374 | "FreeBSD" label in the ELF header. So we put this label on all | |
5375 | executables and (for simplicity) also all other object files. */ | |
5376 | ||
2238051f | 5377 | static void |
a7519a3c RH |
5378 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5379 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5380 | { |
5381 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5382 | ||
5383 | i_ehdrp = elf_elfheader (abfd); | |
5384 | ||
5385 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 5386 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2238051f RH |
5387 | #ifdef OLD_FREEBSD_ABI_LABEL |
5388 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5389 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5390 | #endif | |
5391 | } | |
5392 | ||
5393 | #undef elf_backend_post_process_headers | |
5394 | #define elf_backend_post_process_headers \ | |
5395 | elf64_alpha_fbsd_post_process_headers | |
5396 | ||
571fe01f | 5397 | #undef elf64_bed |
2238051f RH |
5398 | #define elf64_bed elf64_alpha_fbsd_bed |
5399 | ||
5400 | #include "elf64-target.h" |