Commit | Line | Data |
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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
77cfaee6 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
7898deda | 3 | 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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
21 | |
22 | /* We need a published ABI spec for this. Until one comes out, don't | |
23 | assume this'll remain unchanged forever. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | ||
30 | #include "elf/alpha.h" | |
31 | ||
32 | #define ALPHAECOFF | |
33 | ||
34 | #define NO_COFF_RELOCS | |
35 | #define NO_COFF_SYMBOLS | |
36 | #define NO_COFF_LINENOS | |
37 | ||
fe8bc63d | 38 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
39 | #include "coff/internal.h" |
40 | #include "coff/sym.h" | |
41 | #include "coff/symconst.h" | |
42 | #include "coff/ecoff.h" | |
43 | #include "coff/alpha.h" | |
44 | #include "aout/ar.h" | |
45 | #include "libcoff.h" | |
46 | #include "libecoff.h" | |
47 | #define ECOFF_64 | |
48 | #include "ecoffswap.h" | |
49 | ||
252b5132 RH |
50 | \f |
51 | struct alpha_elf_link_hash_entry | |
52 | { | |
53 | struct elf_link_hash_entry root; | |
54 | ||
55 | /* External symbol information. */ | |
56 | EXTR esym; | |
57 | ||
58 | /* Cumulative flags for all the .got entries. */ | |
59 | int flags; | |
60 | ||
9e756d64 | 61 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
62 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
63 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
64 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
65 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
66 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
67 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
68 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 69 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
cc03ec80 RH |
70 | #define ALPHA_ELF_LINK_HASH_PLT_LOC 0x80 |
71 | ||
252b5132 RH |
72 | /* Used to implement multiple .got subsections. */ |
73 | struct alpha_elf_got_entry | |
74 | { | |
75 | struct alpha_elf_got_entry *next; | |
76 | ||
571fe01f | 77 | /* Which .got subsection? */ |
252b5132 RH |
78 | bfd *gotobj; |
79 | ||
571fe01f | 80 | /* The addend in effect for this entry. */ |
dc810e39 | 81 | bfd_vma addend; |
252b5132 | 82 | |
571fe01f | 83 | /* The .got offset for this entry. */ |
252b5132 RH |
84 | int got_offset; |
85 | ||
3765b1be RH |
86 | /* How many references to this entry? */ |
87 | int use_count; | |
252b5132 | 88 | |
3765b1be RH |
89 | /* The relocation type of this entry. */ |
90 | unsigned char reloc_type; | |
252b5132 | 91 | |
3765b1be RH |
92 | /* How a LITERAL is used. */ |
93 | unsigned char flags; | |
94 | ||
95 | /* Have we initialized the dynamic relocation for this entry? */ | |
96 | unsigned char reloc_done; | |
97 | ||
98 | /* Have we adjusted this entry for SEC_MERGE? */ | |
99 | unsigned char reloc_xlated; | |
252b5132 RH |
100 | } *got_entries; |
101 | ||
571fe01f | 102 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
103 | of relocation sections. */ |
104 | struct alpha_elf_reloc_entry | |
105 | { | |
106 | struct alpha_elf_reloc_entry *next; | |
107 | ||
571fe01f | 108 | /* Which .reloc section? */ |
252b5132 RH |
109 | asection *srel; |
110 | ||
571fe01f | 111 | /* What kind of relocation? */ |
fcfbdf31 JJ |
112 | unsigned int rtype; |
113 | ||
571fe01f | 114 | /* Is this against read-only section? */ |
fcfbdf31 | 115 | unsigned int reltext : 1; |
252b5132 | 116 | |
571fe01f | 117 | /* How many did we find? */ |
252b5132 RH |
118 | unsigned long count; |
119 | } *reloc_entries; | |
120 | }; | |
121 | ||
122 | /* Alpha ELF linker hash table. */ | |
123 | ||
124 | struct alpha_elf_link_hash_table | |
125 | { | |
126 | struct elf_link_hash_table root; | |
127 | ||
128 | /* The head of a list of .got subsections linked through | |
129 | alpha_elf_tdata(abfd)->got_link_next. */ | |
130 | bfd *got_list; | |
131 | }; | |
132 | ||
133 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
134 | ||
135 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
136 | ((struct alpha_elf_link_hash_entry *) \ | |
137 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
138 | (copy), (follow))) | |
139 | ||
140 | /* Traverse a Alpha ELF linker hash table. */ | |
141 | ||
142 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
143 | (elf_link_hash_traverse \ | |
144 | (&(table)->root, \ | |
a7519a3c | 145 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
252b5132 RH |
146 | (info))) |
147 | ||
148 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
149 | ||
150 | #define alpha_elf_hash_table(p) \ | |
151 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
152 | ||
153 | /* Get the object's symbols as our own entry type. */ | |
154 | ||
155 | #define alpha_elf_sym_hashes(abfd) \ | |
156 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
157 | ||
986a241f RH |
158 | /* Should we do dynamic things to this symbol? This differs from the |
159 | generic version in that we never need to consider function pointer | |
160 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
161 | address is ever taken. */ | |
252b5132 | 162 | |
986a241f | 163 | static inline bfd_boolean |
a7519a3c RH |
164 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
165 | struct bfd_link_info *info) | |
8fb35fed | 166 | { |
986a241f | 167 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 168 | } |
252b5132 RH |
169 | |
170 | /* Create an entry in a Alpha ELF linker hash table. */ | |
171 | ||
172 | static struct bfd_hash_entry * | |
a7519a3c RH |
173 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
174 | struct bfd_hash_table *table, | |
175 | const char *string) | |
252b5132 RH |
176 | { |
177 | struct alpha_elf_link_hash_entry *ret = | |
178 | (struct alpha_elf_link_hash_entry *) entry; | |
179 | ||
180 | /* Allocate the structure if it has not already been allocated by a | |
181 | subclass. */ | |
182 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
183 | ret = ((struct alpha_elf_link_hash_entry *) | |
184 | bfd_hash_allocate (table, | |
185 | sizeof (struct alpha_elf_link_hash_entry))); | |
186 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
187 | return (struct bfd_hash_entry *) ret; | |
188 | ||
189 | /* Call the allocation method of the superclass. */ | |
190 | ret = ((struct alpha_elf_link_hash_entry *) | |
191 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
192 | table, string)); | |
193 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
194 | { | |
195 | /* Set local fields. */ | |
196 | memset (&ret->esym, 0, sizeof (EXTR)); | |
197 | /* We use -2 as a marker to indicate that the information has | |
198 | not been set. -1 means there is no associated ifd. */ | |
199 | ret->esym.ifd = -2; | |
200 | ret->flags = 0; | |
201 | ret->got_entries = NULL; | |
202 | ret->reloc_entries = NULL; | |
203 | } | |
204 | ||
205 | return (struct bfd_hash_entry *) ret; | |
206 | } | |
207 | ||
208 | /* Create a Alpha ELF linker hash table. */ | |
209 | ||
210 | static struct bfd_link_hash_table * | |
a7519a3c | 211 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
212 | { |
213 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 214 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 215 | |
e2d34d7d | 216 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
217 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
218 | return NULL; | |
219 | ||
220 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
221 | elf64_alpha_link_hash_newfunc)) | |
222 | { | |
e2d34d7d | 223 | free (ret); |
252b5132 RH |
224 | return NULL; |
225 | } | |
226 | ||
227 | return &ret->root.root; | |
228 | } | |
229 | \f | |
230 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
231 | ||
232 | struct alpha_elf_obj_tdata | |
233 | { | |
234 | struct elf_obj_tdata root; | |
235 | ||
236 | /* For every input file, these are the got entries for that object's | |
237 | local symbols. */ | |
238 | struct alpha_elf_got_entry ** local_got_entries; | |
239 | ||
240 | /* For every input file, this is the object that owns the got that | |
241 | this input file uses. */ | |
242 | bfd *gotobj; | |
243 | ||
244 | /* For every got, this is a linked list through the objects using this got */ | |
245 | bfd *in_got_link_next; | |
246 | ||
247 | /* For every got, this is a link to the next got subsegment. */ | |
248 | bfd *got_link_next; | |
249 | ||
250 | /* For every got, this is the section. */ | |
251 | asection *got; | |
252 | ||
3765b1be RH |
253 | /* For every got, this is it's total number of words. */ |
254 | int total_got_size; | |
252b5132 | 255 | |
3765b1be | 256 | /* For every got, this is the sum of the number of words required |
252b5132 | 257 | to hold all of the member object's local got. */ |
3765b1be | 258 | int local_got_size; |
252b5132 RH |
259 | }; |
260 | ||
261 | #define alpha_elf_tdata(abfd) \ | |
262 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
263 | ||
b34976b6 | 264 | static bfd_boolean |
a7519a3c | 265 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 266 | { |
dc810e39 AM |
267 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
268 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 269 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
270 | return FALSE; |
271 | return TRUE; | |
252b5132 RH |
272 | } |
273 | ||
b34976b6 | 274 | static bfd_boolean |
a7519a3c | 275 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 276 | { |
252b5132 RH |
277 | /* Set the right machine number for an Alpha ELF file. */ |
278 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
279 | } | |
280 | \f | |
a7519a3c RH |
281 | /* A relocation function which doesn't do anything. */ |
282 | ||
283 | static bfd_reloc_status_type | |
284 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
285 | asymbol *sym ATTRIBUTE_UNUSED, | |
286 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
287 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
288 | { | |
289 | if (output_bfd) | |
290 | reloc->address += sec->output_offset; | |
291 | return bfd_reloc_ok; | |
292 | } | |
293 | ||
294 | /* A relocation function used for an unsupported reloc. */ | |
295 | ||
296 | static bfd_reloc_status_type | |
297 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
298 | asymbol *sym ATTRIBUTE_UNUSED, | |
299 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
300 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
301 | { | |
302 | if (output_bfd) | |
303 | reloc->address += sec->output_offset; | |
304 | return bfd_reloc_notsupported; | |
305 | } | |
306 | ||
307 | /* Do the work of the GPDISP relocation. */ | |
308 | ||
309 | static bfd_reloc_status_type | |
310 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
311 | bfd_byte *p_lda) | |
312 | { | |
313 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
314 | bfd_vma addend; | |
315 | unsigned long i_ldah, i_lda; | |
316 | ||
317 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
318 | i_lda = bfd_get_32 (abfd, p_lda); | |
319 | ||
320 | /* Complain if the instructions are not correct. */ | |
321 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
322 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
323 | ret = bfd_reloc_dangerous; | |
324 | ||
325 | /* Extract the user-supplied offset, mirroring the sign extensions | |
326 | that the instructions perform. */ | |
327 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
328 | addend = (addend ^ 0x80008000) - 0x80008000; | |
329 | ||
330 | gpdisp += addend; | |
331 | ||
332 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
333 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
334 | ret = bfd_reloc_overflow; | |
335 | ||
336 | /* compensate for the sign extension again. */ | |
337 | i_ldah = ((i_ldah & 0xffff0000) | |
338 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
339 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
340 | ||
341 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
342 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
347 | /* The special function for the GPDISP reloc. */ | |
348 | ||
349 | static bfd_reloc_status_type | |
350 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
351 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
352 | asection *input_section, bfd *output_bfd, | |
353 | char **err_msg) | |
354 | { | |
355 | bfd_reloc_status_type ret; | |
356 | bfd_vma gp, relocation; | |
357 | bfd_vma high_address; | |
358 | bfd_byte *p_ldah, *p_lda; | |
359 | ||
360 | /* Don't do anything if we're not doing a final link. */ | |
361 | if (output_bfd) | |
362 | { | |
363 | reloc_entry->address += input_section->output_offset; | |
364 | return bfd_reloc_ok; | |
365 | } | |
366 | ||
367 | high_address = bfd_get_section_limit (abfd, input_section); | |
368 | if (reloc_entry->address > high_address | |
369 | || reloc_entry->address + reloc_entry->addend > high_address) | |
370 | return bfd_reloc_outofrange; | |
371 | ||
372 | /* The gp used in the portion of the output object to which this | |
373 | input object belongs is cached on the input bfd. */ | |
374 | gp = _bfd_get_gp_value (abfd); | |
375 | ||
376 | relocation = (input_section->output_section->vma | |
377 | + input_section->output_offset | |
378 | + reloc_entry->address); | |
379 | ||
380 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
381 | p_lda = p_ldah + reloc_entry->addend; | |
382 | ||
383 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
384 | ||
385 | /* Complain if the instructions are not correct. */ | |
386 | if (ret == bfd_reloc_dangerous) | |
387 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
388 | ||
389 | return ret; | |
390 | } | |
391 | ||
252b5132 RH |
392 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
393 | from smaller values. Start with zero, widen, *then* decrement. */ | |
394 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
395 | ||
dfe57ca0 RH |
396 | #define SKIP_HOWTO(N) \ |
397 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
398 | ||
252b5132 RH |
399 | static reloc_howto_type elf64_alpha_howto_table[] = |
400 | { | |
401 | HOWTO (R_ALPHA_NONE, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 8, /* bitsize */ | |
b34976b6 | 405 | TRUE, /* pc_relative */ |
252b5132 RH |
406 | 0, /* bitpos */ |
407 | complain_overflow_dont, /* complain_on_overflow */ | |
408 | elf64_alpha_reloc_nil, /* special_function */ | |
409 | "NONE", /* name */ | |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
252b5132 RH |
411 | 0, /* src_mask */ |
412 | 0, /* dst_mask */ | |
b34976b6 | 413 | TRUE), /* pcrel_offset */ |
252b5132 RH |
414 | |
415 | /* A 32 bit reference to a symbol. */ | |
416 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
417 | 0, /* rightshift */ | |
418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
419 | 32, /* bitsize */ | |
b34976b6 | 420 | FALSE, /* pc_relative */ |
252b5132 RH |
421 | 0, /* bitpos */ |
422 | complain_overflow_bitfield, /* complain_on_overflow */ | |
423 | 0, /* special_function */ | |
424 | "REFLONG", /* name */ | |
b34976b6 | 425 | FALSE, /* partial_inplace */ |
252b5132 RH |
426 | 0xffffffff, /* src_mask */ |
427 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 428 | FALSE), /* pcrel_offset */ |
252b5132 RH |
429 | |
430 | /* A 64 bit reference to a symbol. */ | |
431 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 64, /* bitsize */ | |
b34976b6 | 435 | FALSE, /* pc_relative */ |
252b5132 RH |
436 | 0, /* bitpos */ |
437 | complain_overflow_bitfield, /* complain_on_overflow */ | |
438 | 0, /* special_function */ | |
439 | "REFQUAD", /* name */ | |
b34976b6 | 440 | FALSE, /* partial_inplace */ |
252b5132 RH |
441 | MINUS_ONE, /* src_mask */ |
442 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 443 | FALSE), /* pcrel_offset */ |
252b5132 RH |
444 | |
445 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
446 | that when the value is used the value of the gp register will be | |
447 | added in. */ | |
448 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 32, /* bitsize */ | |
b34976b6 | 452 | FALSE, /* pc_relative */ |
252b5132 RH |
453 | 0, /* bitpos */ |
454 | complain_overflow_bitfield, /* complain_on_overflow */ | |
455 | 0, /* special_function */ | |
456 | "GPREL32", /* name */ | |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
252b5132 RH |
458 | 0xffffffff, /* src_mask */ |
459 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 460 | FALSE), /* pcrel_offset */ |
252b5132 RH |
461 | |
462 | /* Used for an instruction that refers to memory off the GP register. */ | |
463 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
464 | 0, /* rightshift */ | |
dfe57ca0 | 465 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 466 | 16, /* bitsize */ |
b34976b6 | 467 | FALSE, /* pc_relative */ |
252b5132 RH |
468 | 0, /* bitpos */ |
469 | complain_overflow_signed, /* complain_on_overflow */ | |
470 | 0, /* special_function */ | |
471 | "ELF_LITERAL", /* name */ | |
b34976b6 | 472 | FALSE, /* partial_inplace */ |
252b5132 RH |
473 | 0xffff, /* src_mask */ |
474 | 0xffff, /* dst_mask */ | |
b34976b6 | 475 | FALSE), /* pcrel_offset */ |
252b5132 RH |
476 | |
477 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
478 | It identifies a use of the literal. The symbol index is special: | |
479 | 1 means the literal address is in the base register of a memory | |
480 | format instruction; 2 means the literal address is in the byte | |
481 | offset register of a byte-manipulation instruction; 3 means the | |
482 | literal address is in the target register of a jsr instruction. | |
483 | This does not actually do any relocation. */ | |
484 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
485 | 0, /* rightshift */ | |
dfe57ca0 | 486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 487 | 32, /* bitsize */ |
b34976b6 | 488 | FALSE, /* pc_relative */ |
252b5132 RH |
489 | 0, /* bitpos */ |
490 | complain_overflow_dont, /* complain_on_overflow */ | |
491 | elf64_alpha_reloc_nil, /* special_function */ | |
492 | "LITUSE", /* name */ | |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
252b5132 RH |
494 | 0, /* src_mask */ |
495 | 0, /* dst_mask */ | |
b34976b6 | 496 | FALSE), /* pcrel_offset */ |
252b5132 RH |
497 | |
498 | /* Load the gp register. This is always used for a ldah instruction | |
499 | which loads the upper 16 bits of the gp register. The symbol | |
500 | index of the GPDISP instruction is an offset in bytes to the lda | |
501 | instruction that loads the lower 16 bits. The value to use for | |
502 | the relocation is the difference between the GP value and the | |
503 | current location; the load will always be done against a register | |
504 | holding the current address. | |
505 | ||
506 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
507 | any offset is present in the instructions, it is an offset from | |
508 | the register to the ldah instruction. This lets us avoid any | |
509 | stupid hackery like inventing a gp value to do partial relocation | |
510 | against. Also unlike ECOFF, we do the whole relocation off of | |
511 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
512 | space consuming bit, that, since all the information was present | |
513 | in the GPDISP_HI16 reloc. */ | |
514 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
515 | 16, /* rightshift */ | |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 16, /* bitsize */ | |
b34976b6 | 518 | FALSE, /* pc_relative */ |
252b5132 RH |
519 | 0, /* bitpos */ |
520 | complain_overflow_dont, /* complain_on_overflow */ | |
521 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
522 | "GPDISP", /* name */ | |
b34976b6 | 523 | FALSE, /* partial_inplace */ |
252b5132 RH |
524 | 0xffff, /* src_mask */ |
525 | 0xffff, /* dst_mask */ | |
b34976b6 | 526 | TRUE), /* pcrel_offset */ |
252b5132 RH |
527 | |
528 | /* A 21 bit branch. */ | |
529 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
530 | 2, /* rightshift */ | |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 21, /* bitsize */ | |
b34976b6 | 533 | TRUE, /* pc_relative */ |
252b5132 RH |
534 | 0, /* bitpos */ |
535 | complain_overflow_signed, /* complain_on_overflow */ | |
536 | 0, /* special_function */ | |
537 | "BRADDR", /* name */ | |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
252b5132 RH |
539 | 0x1fffff, /* src_mask */ |
540 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 541 | TRUE), /* pcrel_offset */ |
252b5132 RH |
542 | |
543 | /* A hint for a jump to a register. */ | |
544 | HOWTO (R_ALPHA_HINT, /* type */ | |
545 | 2, /* rightshift */ | |
dfe57ca0 | 546 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 547 | 14, /* bitsize */ |
b34976b6 | 548 | TRUE, /* pc_relative */ |
252b5132 RH |
549 | 0, /* bitpos */ |
550 | complain_overflow_dont, /* complain_on_overflow */ | |
551 | 0, /* special_function */ | |
552 | "HINT", /* name */ | |
b34976b6 | 553 | FALSE, /* partial_inplace */ |
252b5132 RH |
554 | 0x3fff, /* src_mask */ |
555 | 0x3fff, /* dst_mask */ | |
b34976b6 | 556 | TRUE), /* pcrel_offset */ |
252b5132 RH |
557 | |
558 | /* 16 bit PC relative offset. */ | |
559 | HOWTO (R_ALPHA_SREL16, /* type */ | |
560 | 0, /* rightshift */ | |
561 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
562 | 16, /* bitsize */ | |
b34976b6 | 563 | TRUE, /* pc_relative */ |
252b5132 RH |
564 | 0, /* bitpos */ |
565 | complain_overflow_signed, /* complain_on_overflow */ | |
566 | 0, /* special_function */ | |
567 | "SREL16", /* name */ | |
b34976b6 | 568 | FALSE, /* partial_inplace */ |
252b5132 RH |
569 | 0xffff, /* src_mask */ |
570 | 0xffff, /* dst_mask */ | |
b34976b6 | 571 | TRUE), /* pcrel_offset */ |
252b5132 RH |
572 | |
573 | /* 32 bit PC relative offset. */ | |
574 | HOWTO (R_ALPHA_SREL32, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
577 | 32, /* bitsize */ | |
b34976b6 | 578 | TRUE, /* pc_relative */ |
252b5132 RH |
579 | 0, /* bitpos */ |
580 | complain_overflow_signed, /* complain_on_overflow */ | |
581 | 0, /* special_function */ | |
582 | "SREL32", /* name */ | |
b34976b6 | 583 | FALSE, /* partial_inplace */ |
252b5132 RH |
584 | 0xffffffff, /* src_mask */ |
585 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 586 | TRUE), /* pcrel_offset */ |
252b5132 RH |
587 | |
588 | /* A 64 bit PC relative offset. */ | |
589 | HOWTO (R_ALPHA_SREL64, /* type */ | |
590 | 0, /* rightshift */ | |
591 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
592 | 64, /* bitsize */ | |
b34976b6 | 593 | TRUE, /* pc_relative */ |
252b5132 RH |
594 | 0, /* bitpos */ |
595 | complain_overflow_signed, /* complain_on_overflow */ | |
596 | 0, /* special_function */ | |
597 | "SREL64", /* name */ | |
b34976b6 | 598 | FALSE, /* partial_inplace */ |
252b5132 RH |
599 | MINUS_ONE, /* src_mask */ |
600 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 601 | TRUE), /* pcrel_offset */ |
252b5132 | 602 | |
dfe57ca0 RH |
603 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
604 | SKIP_HOWTO (12), | |
605 | SKIP_HOWTO (13), | |
606 | SKIP_HOWTO (14), | |
607 | SKIP_HOWTO (15), | |
608 | SKIP_HOWTO (16), | |
252b5132 RH |
609 | |
610 | /* The high 16 bits of the displacement from GP to the target. */ | |
611 | HOWTO (R_ALPHA_GPRELHIGH, | |
612 | 0, /* rightshift */ | |
dfe57ca0 | 613 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 614 | 16, /* bitsize */ |
b34976b6 | 615 | FALSE, /* pc_relative */ |
252b5132 RH |
616 | 0, /* bitpos */ |
617 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 618 | 0, /* special_function */ |
252b5132 | 619 | "GPRELHIGH", /* name */ |
b34976b6 | 620 | FALSE, /* partial_inplace */ |
252b5132 RH |
621 | 0xffff, /* src_mask */ |
622 | 0xffff, /* dst_mask */ | |
b34976b6 | 623 | FALSE), /* pcrel_offset */ |
252b5132 RH |
624 | |
625 | /* The low 16 bits of the displacement from GP to the target. */ | |
626 | HOWTO (R_ALPHA_GPRELLOW, | |
627 | 0, /* rightshift */ | |
dfe57ca0 | 628 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 629 | 16, /* bitsize */ |
b34976b6 | 630 | FALSE, /* pc_relative */ |
252b5132 RH |
631 | 0, /* bitpos */ |
632 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 633 | 0, /* special_function */ |
252b5132 | 634 | "GPRELLOW", /* name */ |
b34976b6 | 635 | FALSE, /* partial_inplace */ |
252b5132 RH |
636 | 0xffff, /* src_mask */ |
637 | 0xffff, /* dst_mask */ | |
b34976b6 | 638 | FALSE), /* pcrel_offset */ |
252b5132 RH |
639 | |
640 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 641 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 642 | 0, /* rightshift */ |
dfe57ca0 | 643 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 644 | 16, /* bitsize */ |
b34976b6 | 645 | FALSE, /* pc_relative */ |
252b5132 RH |
646 | 0, /* bitpos */ |
647 | complain_overflow_signed, /* complain_on_overflow */ | |
648 | 0, /* special_function */ | |
dfe57ca0 | 649 | "GPREL16", /* name */ |
b34976b6 | 650 | FALSE, /* partial_inplace */ |
252b5132 RH |
651 | 0xffff, /* src_mask */ |
652 | 0xffff, /* dst_mask */ | |
b34976b6 | 653 | FALSE), /* pcrel_offset */ |
252b5132 | 654 | |
dfe57ca0 RH |
655 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
656 | SKIP_HOWTO (20), | |
657 | SKIP_HOWTO (21), | |
658 | SKIP_HOWTO (22), | |
659 | SKIP_HOWTO (23), | |
252b5132 | 660 | |
fe8bc63d | 661 | /* Misc ELF relocations. */ |
252b5132 RH |
662 | |
663 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
664 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
665 | is present because every other ELF has one, but should not be used | |
666 | because .dynbss is an ugly thing. */ | |
667 | HOWTO (R_ALPHA_COPY, | |
668 | 0, | |
669 | 0, | |
670 | 0, | |
b34976b6 | 671 | FALSE, |
252b5132 RH |
672 | 0, |
673 | complain_overflow_dont, | |
674 | bfd_elf_generic_reloc, | |
675 | "COPY", | |
b34976b6 | 676 | FALSE, |
252b5132 RH |
677 | 0, |
678 | 0, | |
b34976b6 | 679 | TRUE), |
252b5132 RH |
680 | |
681 | /* A dynamic relocation for a .got entry. */ | |
682 | HOWTO (R_ALPHA_GLOB_DAT, | |
683 | 0, | |
684 | 0, | |
685 | 0, | |
b34976b6 | 686 | FALSE, |
252b5132 RH |
687 | 0, |
688 | complain_overflow_dont, | |
689 | bfd_elf_generic_reloc, | |
690 | "GLOB_DAT", | |
b34976b6 | 691 | FALSE, |
252b5132 RH |
692 | 0, |
693 | 0, | |
b34976b6 | 694 | TRUE), |
252b5132 RH |
695 | |
696 | /* A dynamic relocation for a .plt entry. */ | |
697 | HOWTO (R_ALPHA_JMP_SLOT, | |
698 | 0, | |
699 | 0, | |
700 | 0, | |
b34976b6 | 701 | FALSE, |
252b5132 RH |
702 | 0, |
703 | complain_overflow_dont, | |
704 | bfd_elf_generic_reloc, | |
705 | "JMP_SLOT", | |
b34976b6 | 706 | FALSE, |
252b5132 RH |
707 | 0, |
708 | 0, | |
b34976b6 | 709 | TRUE), |
252b5132 RH |
710 | |
711 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
712 | HOWTO (R_ALPHA_RELATIVE, | |
713 | 0, | |
714 | 0, | |
715 | 0, | |
b34976b6 | 716 | FALSE, |
252b5132 RH |
717 | 0, |
718 | complain_overflow_dont, | |
719 | bfd_elf_generic_reloc, | |
720 | "RELATIVE", | |
b34976b6 | 721 | FALSE, |
252b5132 RH |
722 | 0, |
723 | 0, | |
b34976b6 | 724 | TRUE), |
7793f4d0 RH |
725 | |
726 | /* A 21 bit branch that adjusts for gp loads. */ | |
727 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
728 | 2, /* rightshift */ | |
729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 21, /* bitsize */ | |
b34976b6 | 731 | TRUE, /* pc_relative */ |
7793f4d0 RH |
732 | 0, /* bitpos */ |
733 | complain_overflow_signed, /* complain_on_overflow */ | |
734 | 0, /* special_function */ | |
735 | "BRSGP", /* name */ | |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
737 | 0x1fffff, /* src_mask */ |
738 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 739 | TRUE), /* pcrel_offset */ |
3765b1be RH |
740 | |
741 | /* Creates a tls_index for the symbol in the got. */ | |
742 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
743 | 0, /* rightshift */ | |
744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
745 | 16, /* bitsize */ | |
b34976b6 | 746 | FALSE, /* pc_relative */ |
3765b1be RH |
747 | 0, /* bitpos */ |
748 | complain_overflow_signed, /* complain_on_overflow */ | |
749 | 0, /* special_function */ | |
750 | "TLSGD", /* name */ | |
b34976b6 | 751 | FALSE, /* partial_inplace */ |
3765b1be RH |
752 | 0xffff, /* src_mask */ |
753 | 0xffff, /* dst_mask */ | |
b34976b6 | 754 | FALSE), /* pcrel_offset */ |
3765b1be RH |
755 | |
756 | /* Creates a tls_index for the (current) module in the got. */ | |
757 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
758 | 0, /* rightshift */ | |
759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
760 | 16, /* bitsize */ | |
b34976b6 | 761 | FALSE, /* pc_relative */ |
3765b1be RH |
762 | 0, /* bitpos */ |
763 | complain_overflow_signed, /* complain_on_overflow */ | |
764 | 0, /* special_function */ | |
765 | "TLSLDM", /* name */ | |
b34976b6 | 766 | FALSE, /* partial_inplace */ |
3765b1be RH |
767 | 0xffff, /* src_mask */ |
768 | 0xffff, /* dst_mask */ | |
b34976b6 | 769 | FALSE), /* pcrel_offset */ |
3765b1be RH |
770 | |
771 | /* A dynamic relocation for a DTP module entry. */ | |
772 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
773 | 0, /* rightshift */ | |
774 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
775 | 64, /* bitsize */ | |
b34976b6 | 776 | FALSE, /* pc_relative */ |
3765b1be RH |
777 | 0, /* bitpos */ |
778 | complain_overflow_bitfield, /* complain_on_overflow */ | |
779 | 0, /* special_function */ | |
780 | "DTPMOD64", /* name */ | |
b34976b6 | 781 | FALSE, /* partial_inplace */ |
3765b1be RH |
782 | MINUS_ONE, /* src_mask */ |
783 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 784 | FALSE), /* pcrel_offset */ |
3765b1be RH |
785 | |
786 | /* Creates a 64-bit offset in the got for the displacement | |
787 | from DTP to the target. */ | |
788 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
789 | 0, /* rightshift */ | |
790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 16, /* bitsize */ | |
b34976b6 | 792 | FALSE, /* pc_relative */ |
3765b1be RH |
793 | 0, /* bitpos */ |
794 | complain_overflow_signed, /* complain_on_overflow */ | |
795 | 0, /* special_function */ | |
796 | "GOTDTPREL", /* name */ | |
b34976b6 | 797 | FALSE, /* partial_inplace */ |
3765b1be RH |
798 | 0xffff, /* src_mask */ |
799 | 0xffff, /* dst_mask */ | |
b34976b6 | 800 | FALSE), /* pcrel_offset */ |
3765b1be RH |
801 | |
802 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
803 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
804 | 0, /* rightshift */ | |
805 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
806 | 64, /* bitsize */ | |
b34976b6 | 807 | FALSE, /* pc_relative */ |
3765b1be RH |
808 | 0, /* bitpos */ |
809 | complain_overflow_bitfield, /* complain_on_overflow */ | |
810 | 0, /* special_function */ | |
811 | "DTPREL64", /* name */ | |
b34976b6 | 812 | FALSE, /* partial_inplace */ |
3765b1be RH |
813 | MINUS_ONE, /* src_mask */ |
814 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 815 | FALSE), /* pcrel_offset */ |
3765b1be RH |
816 | |
817 | /* The high 16 bits of the displacement from DTP to the target. */ | |
818 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
819 | 0, /* rightshift */ | |
820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 16, /* bitsize */ | |
b34976b6 | 822 | FALSE, /* pc_relative */ |
3765b1be RH |
823 | 0, /* bitpos */ |
824 | complain_overflow_signed, /* complain_on_overflow */ | |
825 | 0, /* special_function */ | |
826 | "DTPRELHI", /* name */ | |
b34976b6 | 827 | FALSE, /* partial_inplace */ |
3765b1be RH |
828 | 0xffff, /* src_mask */ |
829 | 0xffff, /* dst_mask */ | |
b34976b6 | 830 | FALSE), /* pcrel_offset */ |
3765b1be RH |
831 | |
832 | /* The low 16 bits of the displacement from DTP to the target. */ | |
833 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
834 | 0, /* rightshift */ | |
835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
836 | 16, /* bitsize */ | |
b34976b6 | 837 | FALSE, /* pc_relative */ |
3765b1be RH |
838 | 0, /* bitpos */ |
839 | complain_overflow_dont, /* complain_on_overflow */ | |
840 | 0, /* special_function */ | |
841 | "DTPRELLO", /* name */ | |
b34976b6 | 842 | FALSE, /* partial_inplace */ |
3765b1be RH |
843 | 0xffff, /* src_mask */ |
844 | 0xffff, /* dst_mask */ | |
b34976b6 | 845 | FALSE), /* pcrel_offset */ |
3765b1be RH |
846 | |
847 | /* A 16-bit displacement from DTP to the target. */ | |
848 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
849 | 0, /* rightshift */ | |
850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
851 | 16, /* bitsize */ | |
b34976b6 | 852 | FALSE, /* pc_relative */ |
3765b1be RH |
853 | 0, /* bitpos */ |
854 | complain_overflow_signed, /* complain_on_overflow */ | |
855 | 0, /* special_function */ | |
856 | "DTPREL16", /* name */ | |
b34976b6 | 857 | FALSE, /* partial_inplace */ |
3765b1be RH |
858 | 0xffff, /* src_mask */ |
859 | 0xffff, /* dst_mask */ | |
b34976b6 | 860 | FALSE), /* pcrel_offset */ |
3765b1be RH |
861 | |
862 | /* Creates a 64-bit offset in the got for the displacement | |
863 | from TP to the target. */ | |
864 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
865 | 0, /* rightshift */ | |
866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
867 | 16, /* bitsize */ | |
b34976b6 | 868 | FALSE, /* pc_relative */ |
3765b1be RH |
869 | 0, /* bitpos */ |
870 | complain_overflow_signed, /* complain_on_overflow */ | |
871 | 0, /* special_function */ | |
872 | "GOTTPREL", /* name */ | |
b34976b6 | 873 | FALSE, /* partial_inplace */ |
3765b1be RH |
874 | 0xffff, /* src_mask */ |
875 | 0xffff, /* dst_mask */ | |
b34976b6 | 876 | FALSE), /* pcrel_offset */ |
3765b1be RH |
877 | |
878 | /* A dynamic relocation for a displacement from TP to the target. */ | |
879 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
880 | 0, /* rightshift */ | |
881 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
882 | 64, /* bitsize */ | |
b34976b6 | 883 | FALSE, /* pc_relative */ |
3765b1be RH |
884 | 0, /* bitpos */ |
885 | complain_overflow_bitfield, /* complain_on_overflow */ | |
886 | 0, /* special_function */ | |
887 | "TPREL64", /* name */ | |
b34976b6 | 888 | FALSE, /* partial_inplace */ |
3765b1be RH |
889 | MINUS_ONE, /* src_mask */ |
890 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 891 | FALSE), /* pcrel_offset */ |
3765b1be RH |
892 | |
893 | /* The high 16 bits of the displacement from TP to the target. */ | |
894 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
895 | 0, /* rightshift */ | |
896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
b34976b6 | 898 | FALSE, /* pc_relative */ |
3765b1be RH |
899 | 0, /* bitpos */ |
900 | complain_overflow_signed, /* complain_on_overflow */ | |
901 | 0, /* special_function */ | |
902 | "TPRELHI", /* name */ | |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
3765b1be RH |
904 | 0xffff, /* src_mask */ |
905 | 0xffff, /* dst_mask */ | |
b34976b6 | 906 | FALSE), /* pcrel_offset */ |
3765b1be RH |
907 | |
908 | /* The low 16 bits of the displacement from TP to the target. */ | |
909 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
912 | 16, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
3765b1be RH |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
916 | 0, /* special_function */ | |
917 | "TPRELLO", /* name */ | |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
3765b1be RH |
919 | 0xffff, /* src_mask */ |
920 | 0xffff, /* dst_mask */ | |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
3765b1be RH |
922 | |
923 | /* A 16-bit displacement from TP to the target. */ | |
924 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
927 | 16, /* bitsize */ | |
b34976b6 | 928 | FALSE, /* pc_relative */ |
3765b1be RH |
929 | 0, /* bitpos */ |
930 | complain_overflow_signed, /* complain_on_overflow */ | |
931 | 0, /* special_function */ | |
932 | "TPREL16", /* name */ | |
b34976b6 | 933 | FALSE, /* partial_inplace */ |
3765b1be RH |
934 | 0xffff, /* src_mask */ |
935 | 0xffff, /* dst_mask */ | |
b34976b6 | 936 | FALSE), /* pcrel_offset */ |
252b5132 RH |
937 | }; |
938 | ||
252b5132 RH |
939 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
940 | ||
941 | struct elf_reloc_map | |
942 | { | |
943 | bfd_reloc_code_real_type bfd_reloc_val; | |
944 | int elf_reloc_val; | |
945 | }; | |
946 | ||
947 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
948 | { | |
dfe57ca0 RH |
949 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
950 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
951 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
952 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
953 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
954 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
955 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
956 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
957 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
958 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
959 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
960 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
961 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
962 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
963 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
964 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 965 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
966 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
967 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
968 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
969 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
970 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
971 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
972 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
973 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
974 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
975 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
976 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
977 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
978 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
979 | }; |
980 | ||
981 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
982 | ||
983 | static reloc_howto_type * | |
a7519a3c RH |
984 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
985 | bfd_reloc_code_real_type code) | |
252b5132 RH |
986 | { |
987 | const struct elf_reloc_map *i, *e; | |
988 | i = e = elf64_alpha_reloc_map; | |
989 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
990 | for (; i != e; ++i) | |
991 | { | |
992 | if (i->bfd_reloc_val == code) | |
993 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
994 | } | |
995 | return 0; | |
996 | } | |
997 | ||
998 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
999 | ||
1000 | static void | |
a7519a3c RH |
1001 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1002 | Elf_Internal_Rela *dst) | |
252b5132 | 1003 | { |
a7519a3c | 1004 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1005 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1006 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1007 | } | |
3765b1be RH |
1008 | |
1009 | /* These two relocations create a two-word entry in the got. */ | |
1010 | #define alpha_got_entry_size(r_type) \ | |
1011 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1012 | |
1013 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1014 | #define alpha_get_dtprel_base(info) \ |
1015 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1016 | |
1017 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1018 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1019 | #define alpha_get_tprel_base(info) \ |
1020 | (elf_hash_table (info)->tls_sec->vma \ | |
1021 | - align_power ((bfd_vma) 16, \ | |
1022 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1023 | \f |
a7519a3c RH |
1024 | /* PLT/GOT Stuff */ |
1025 | #define PLT_HEADER_SIZE 32 | |
1026 | #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */ | |
1027 | #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */ | |
1028 | #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */ | |
1029 | #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */ | |
252b5132 | 1030 | |
a7519a3c RH |
1031 | #define PLT_ENTRY_SIZE 12 |
1032 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
1033 | #define PLT_ENTRY_WORD2 0 | |
1034 | #define PLT_ENTRY_WORD3 0 | |
252b5132 | 1035 | |
a7519a3c | 1036 | #define MAX_GOT_SIZE (64*1024) |
252b5132 | 1037 | |
a7519a3c RH |
1038 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" |
1039 | \f | |
1040 | /* Handle an Alpha specific section when reading an object file. This | |
1041 | is called when bfd_section_from_shdr finds a section with an unknown | |
1042 | type. | |
1043 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1044 | how to. */ | |
252b5132 | 1045 | |
a7519a3c RH |
1046 | static bfd_boolean |
1047 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1048 | Elf_Internal_Shdr *hdr, | |
1049 | const char *name, | |
1050 | int shindex) | |
252b5132 | 1051 | { |
a7519a3c RH |
1052 | asection *newsect; |
1053 | ||
1054 | /* There ought to be a place to keep ELF backend specific flags, but | |
1055 | at the moment there isn't one. We just keep track of the | |
1056 | sections by their name, instead. Fortunately, the ABI gives | |
1057 | suggested names for all the MIPS specific sections, so we will | |
1058 | probably get away with this. */ | |
1059 | switch (hdr->sh_type) | |
1060 | { | |
1061 | case SHT_ALPHA_DEBUG: | |
1062 | if (strcmp (name, ".mdebug") != 0) | |
1063 | return FALSE; | |
1064 | break; | |
1065 | default: | |
1066 | return FALSE; | |
1067 | } | |
252b5132 | 1068 | |
a7519a3c RH |
1069 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1070 | return FALSE; | |
1071 | newsect = hdr->bfd_section; | |
252b5132 | 1072 | |
a7519a3c | 1073 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1074 | { |
a7519a3c RH |
1075 | if (! bfd_set_section_flags (abfd, newsect, |
1076 | (bfd_get_section_flags (abfd, newsect) | |
1077 | | SEC_DEBUGGING))) | |
1078 | return FALSE; | |
252b5132 | 1079 | } |
a7519a3c RH |
1080 | |
1081 | return TRUE; | |
252b5132 RH |
1082 | } |
1083 | ||
a7519a3c RH |
1084 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1085 | ||
b34976b6 | 1086 | static bfd_boolean |
a7519a3c | 1087 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1088 | { |
a7519a3c RH |
1089 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1090 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1091 | |
a7519a3c RH |
1092 | return TRUE; |
1093 | } | |
252b5132 | 1094 | |
a7519a3c RH |
1095 | /* Set the correct type for an Alpha ELF section. We do this by the |
1096 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1097 | |
a7519a3c RH |
1098 | static bfd_boolean |
1099 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1100 | { | |
1101 | register const char *name; | |
1102 | ||
1103 | name = bfd_get_section_name (abfd, sec); | |
1104 | ||
1105 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1106 | { |
a7519a3c RH |
1107 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1108 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1109 | entsize of 0. FIXME: Does this matter? */ | |
1110 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1111 | hdr->sh_entsize = 0; | |
1112 | else | |
1113 | hdr->sh_entsize = 1; | |
252b5132 | 1114 | } |
a7519a3c RH |
1115 | else if ((sec->flags & SEC_SMALL_DATA) |
1116 | || strcmp (name, ".sdata") == 0 | |
1117 | || strcmp (name, ".sbss") == 0 | |
1118 | || strcmp (name, ".lit4") == 0 | |
1119 | || strcmp (name, ".lit8") == 0) | |
1120 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1121 | |
a7519a3c RH |
1122 | return TRUE; |
1123 | } | |
252b5132 | 1124 | |
a7519a3c RH |
1125 | /* Hook called by the linker routine which adds symbols from an object |
1126 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1127 | ||
1128 | static bfd_boolean | |
1129 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1130 | Elf_Internal_Sym *sym, | |
1131 | const char **namep ATTRIBUTE_UNUSED, | |
1132 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1133 | asection **secp, bfd_vma *valp) | |
1134 | { | |
1135 | if (sym->st_shndx == SHN_COMMON | |
1136 | && !info->relocatable | |
1137 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1138 | { |
a7519a3c RH |
1139 | /* Common symbols less than or equal to -G nn bytes are |
1140 | automatically put into .sbss. */ | |
ffcb7aff | 1141 | |
a7519a3c | 1142 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1143 | |
a7519a3c | 1144 | if (scomm == NULL) |
252b5132 | 1145 | { |
a7519a3c RH |
1146 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1147 | (SEC_ALLOC | |
1148 | | SEC_IS_COMMON | |
1149 | | SEC_LINKER_CREATED)); | |
1150 | if (scomm == NULL) | |
1151 | return FALSE; | |
1152 | } | |
ffcb7aff | 1153 | |
a7519a3c RH |
1154 | *secp = scomm; |
1155 | *valp = sym->st_size; | |
1156 | } | |
ffcb7aff | 1157 | |
a7519a3c RH |
1158 | return TRUE; |
1159 | } | |
252b5132 | 1160 | |
a7519a3c | 1161 | /* Create the .got section. */ |
252b5132 | 1162 | |
a7519a3c RH |
1163 | static bfd_boolean |
1164 | elf64_alpha_create_got_section (bfd *abfd, | |
1165 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1166 | { | |
1167 | asection *s; | |
252b5132 | 1168 | |
a7519a3c RH |
1169 | if ((s = bfd_get_section_by_name (abfd, ".got"))) |
1170 | { | |
1171 | /* Check for a non-linker created .got? */ | |
1172 | if (alpha_elf_tdata (abfd)->got == NULL) | |
1173 | alpha_elf_tdata (abfd)->got = s; | |
1174 | return TRUE; | |
1175 | } | |
252b5132 | 1176 | |
a7519a3c RH |
1177 | s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD |
1178 | | SEC_HAS_CONTENTS | |
1179 | | SEC_IN_MEMORY | |
1180 | | SEC_LINKER_CREATED)); | |
1181 | if (s == NULL | |
1182 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1183 | return FALSE; | |
252b5132 | 1184 | |
a7519a3c | 1185 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1186 | |
a7519a3c RH |
1187 | return TRUE; |
1188 | } | |
252b5132 | 1189 | |
a7519a3c | 1190 | /* Create all the dynamic sections. */ |
252b5132 | 1191 | |
a7519a3c RH |
1192 | static bfd_boolean |
1193 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1194 | { | |
1195 | asection *s; | |
1196 | struct elf_link_hash_entry *h; | |
1197 | struct bfd_link_hash_entry *bh; | |
252b5132 | 1198 | |
a7519a3c | 1199 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1200 | |
a7519a3c RH |
1201 | s = bfd_make_section_with_flags (abfd, ".plt", |
1202 | (SEC_ALLOC | SEC_LOAD | |
1203 | | SEC_HAS_CONTENTS | |
1204 | | SEC_IN_MEMORY | |
1205 | | SEC_LINKER_CREATED | |
1206 | | SEC_CODE)); | |
1207 | if (s == NULL | |
1208 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1209 | return FALSE; | |
252b5132 | 1210 | |
a7519a3c RH |
1211 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1212 | .plt section. */ | |
1213 | bh = NULL; | |
1214 | if (! (_bfd_generic_link_add_one_symbol | |
1215 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1216 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
1217 | get_elf_backend_data (abfd)->collect, &bh))) | |
1218 | return FALSE; | |
1219 | h = (struct elf_link_hash_entry *) bh; | |
1220 | h->def_regular = 1; | |
1221 | h->type = STT_OBJECT; | |
d6ad34f6 | 1222 | |
a7519a3c RH |
1223 | if (info->shared |
1224 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1225 | return FALSE; | |
d6ad34f6 | 1226 | |
a7519a3c RH |
1227 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1228 | (SEC_ALLOC | SEC_LOAD | |
1229 | | SEC_HAS_CONTENTS | |
1230 | | SEC_IN_MEMORY | |
1231 | | SEC_LINKER_CREATED | |
1232 | | SEC_READONLY)); | |
1233 | if (s == NULL | |
1234 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1235 | return FALSE; | |
252b5132 | 1236 | |
a7519a3c RH |
1237 | /* We may or may not have created a .got section for this object, but |
1238 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1239 | |
a7519a3c RH |
1240 | if (!elf64_alpha_create_got_section (abfd, info)) |
1241 | return FALSE; | |
1cd6895c | 1242 | |
a7519a3c RH |
1243 | s = bfd_make_section_with_flags (abfd, ".rela.got", |
1244 | (SEC_ALLOC | SEC_LOAD | |
1245 | | SEC_HAS_CONTENTS | |
1246 | | SEC_IN_MEMORY | |
1247 | | SEC_LINKER_CREATED | |
1248 | | SEC_READONLY)); | |
1249 | if (s == NULL | |
1250 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1251 | return FALSE; | |
252b5132 | 1252 | |
a7519a3c RH |
1253 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1254 | dynobj's .got section. We don't do this in the linker script | |
1255 | because we don't want to define the symbol if we are not creating | |
1256 | a global offset table. */ | |
1257 | bh = NULL; | |
1258 | if (!(_bfd_generic_link_add_one_symbol | |
1259 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1260 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1261 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
1262 | return FALSE; | |
1263 | h = (struct elf_link_hash_entry *) bh; | |
1264 | h->def_regular = 1; | |
1265 | h->type = STT_OBJECT; | |
252b5132 | 1266 | |
a7519a3c RH |
1267 | if (info->shared |
1268 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1269 | return FALSE; | |
252b5132 | 1270 | |
a7519a3c | 1271 | elf_hash_table (info)->hgot = h; |
252b5132 | 1272 | |
a7519a3c | 1273 | return TRUE; |
252b5132 | 1274 | } |
a7519a3c RH |
1275 | \f |
1276 | /* Read ECOFF debugging information from a .mdebug section into a | |
1277 | ecoff_debug_info structure. */ | |
252b5132 | 1278 | |
a7519a3c RH |
1279 | static bfd_boolean |
1280 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1281 | struct ecoff_debug_info *debug) | |
252b5132 | 1282 | { |
a7519a3c RH |
1283 | HDRR *symhdr; |
1284 | const struct ecoff_debug_swap *swap; | |
1285 | char *ext_hdr = NULL; | |
252b5132 | 1286 | |
a7519a3c RH |
1287 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1288 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1289 | |
a7519a3c RH |
1290 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1291 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1292 | goto error_return; | |
252b5132 | 1293 | |
a7519a3c RH |
1294 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1295 | swap->external_hdr_size)) | |
1296 | goto error_return; | |
252b5132 | 1297 | |
a7519a3c RH |
1298 | symhdr = &debug->symbolic_header; |
1299 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1300 | |
a7519a3c RH |
1301 | /* The symbolic header contains absolute file offsets and sizes to |
1302 | read. */ | |
1303 | #define READ(ptr, offset, count, size, type) \ | |
1304 | if (symhdr->count == 0) \ | |
1305 | debug->ptr = NULL; \ | |
1306 | else \ | |
1307 | { \ | |
1308 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1309 | debug->ptr = (type) bfd_malloc (amt); \ | |
1310 | if (debug->ptr == NULL) \ | |
1311 | goto error_return; \ | |
1312 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1313 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1314 | goto error_return; \ | |
1315 | } | |
fe8bc63d | 1316 | |
a7519a3c RH |
1317 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1318 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1319 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1320 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1321 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1322 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1323 | union aux_ext *); | |
1324 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1325 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1326 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1327 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1328 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1329 | #undef READ | |
252b5132 | 1330 | |
a7519a3c | 1331 | debug->fdr = NULL; |
252b5132 | 1332 | |
a7519a3c | 1333 | return TRUE; |
252b5132 | 1334 | |
a7519a3c RH |
1335 | error_return: |
1336 | if (ext_hdr != NULL) | |
1337 | free (ext_hdr); | |
1338 | if (debug->line != NULL) | |
1339 | free (debug->line); | |
1340 | if (debug->external_dnr != NULL) | |
1341 | free (debug->external_dnr); | |
1342 | if (debug->external_pdr != NULL) | |
1343 | free (debug->external_pdr); | |
1344 | if (debug->external_sym != NULL) | |
1345 | free (debug->external_sym); | |
1346 | if (debug->external_opt != NULL) | |
1347 | free (debug->external_opt); | |
1348 | if (debug->external_aux != NULL) | |
1349 | free (debug->external_aux); | |
1350 | if (debug->ss != NULL) | |
1351 | free (debug->ss); | |
1352 | if (debug->ssext != NULL) | |
1353 | free (debug->ssext); | |
1354 | if (debug->external_fdr != NULL) | |
1355 | free (debug->external_fdr); | |
1356 | if (debug->external_rfd != NULL) | |
1357 | free (debug->external_rfd); | |
1358 | if (debug->external_ext != NULL) | |
1359 | free (debug->external_ext); | |
1360 | return FALSE; | |
252b5132 RH |
1361 | } |
1362 | ||
a7519a3c RH |
1363 | /* Alpha ELF local labels start with '$'. */ |
1364 | ||
b34976b6 | 1365 | static bfd_boolean |
a7519a3c | 1366 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1367 | { |
a7519a3c RH |
1368 | return name[0] == '$'; |
1369 | } | |
9e756d64 | 1370 | |
a7519a3c RH |
1371 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1372 | routine in order to handle the ECOFF debugging information. We | |
1373 | still call this mips_elf_find_line because of the slot | |
1374 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1375 | |
a7519a3c RH |
1376 | struct mips_elf_find_line |
1377 | { | |
1378 | struct ecoff_debug_info d; | |
1379 | struct ecoff_find_line i; | |
1380 | }; | |
d6ad34f6 | 1381 | |
a7519a3c RH |
1382 | static bfd_boolean |
1383 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1384 | bfd_vma offset, const char **filename_ptr, | |
1385 | const char **functionname_ptr, | |
1386 | unsigned int *line_ptr) | |
1387 | { | |
1388 | asection *msec; | |
252b5132 | 1389 | |
a7519a3c RH |
1390 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1391 | filename_ptr, functionname_ptr, | |
1392 | line_ptr, 0, | |
1393 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1394 | return TRUE; |
9e756d64 | 1395 | |
a7519a3c RH |
1396 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1397 | if (msec != NULL) | |
1bbc9cec | 1398 | { |
a7519a3c RH |
1399 | flagword origflags; |
1400 | struct mips_elf_find_line *fi; | |
1401 | const struct ecoff_debug_swap * const swap = | |
1402 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1403 | |
a7519a3c RH |
1404 | /* If we are called during a link, alpha_elf_final_link may have |
1405 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1406 | if appropriate (which it normally will be). */ | |
1407 | origflags = msec->flags; | |
1408 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1409 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1410 | |
a7519a3c RH |
1411 | fi = elf_tdata (abfd)->find_line_info; |
1412 | if (fi == NULL) | |
1413 | { | |
1414 | bfd_size_type external_fdr_size; | |
1415 | char *fraw_src; | |
1416 | char *fraw_end; | |
1417 | struct fdr *fdr_ptr; | |
1418 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1419 | |
a7519a3c RH |
1420 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1421 | if (fi == NULL) | |
1422 | { | |
1423 | msec->flags = origflags; | |
1424 | return FALSE; | |
1425 | } | |
9e756d64 | 1426 | |
a7519a3c RH |
1427 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1428 | { | |
1429 | msec->flags = origflags; | |
1430 | return FALSE; | |
1431 | } | |
9e756d64 | 1432 | |
a7519a3c RH |
1433 | /* Swap in the FDR information. */ |
1434 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1435 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1436 | if (fi->d.fdr == NULL) | |
1437 | { | |
1438 | msec->flags = origflags; | |
1439 | return FALSE; | |
1440 | } | |
1441 | external_fdr_size = swap->external_fdr_size; | |
1442 | fdr_ptr = fi->d.fdr; | |
1443 | fraw_src = (char *) fi->d.external_fdr; | |
1444 | fraw_end = (fraw_src | |
1445 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1446 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1447 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1448 | |
a7519a3c | 1449 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1450 | |
a7519a3c RH |
1451 | /* Note that we don't bother to ever free this information. |
1452 | find_nearest_line is either called all the time, as in | |
1453 | objdump -l, so the information should be saved, or it is | |
1454 | rarely called, as in ld error messages, so the memory | |
1455 | wasted is unimportant. Still, it would probably be a | |
1456 | good idea for free_cached_info to throw it away. */ | |
1457 | } | |
9e756d64 | 1458 | |
a7519a3c RH |
1459 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1460 | &fi->i, filename_ptr, functionname_ptr, | |
1461 | line_ptr)) | |
1462 | { | |
1463 | msec->flags = origflags; | |
1464 | return TRUE; | |
1465 | } | |
9e756d64 | 1466 | |
a7519a3c | 1467 | msec->flags = origflags; |
9e756d64 | 1468 | } |
9e756d64 | 1469 | |
a7519a3c | 1470 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1471 | |
a7519a3c RH |
1472 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1473 | filename_ptr, functionname_ptr, | |
1474 | line_ptr); | |
9e756d64 | 1475 | } |
a7519a3c RH |
1476 | \f |
1477 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1478 | |
a7519a3c | 1479 | struct extsym_info |
9e756d64 | 1480 | { |
a7519a3c RH |
1481 | bfd *abfd; |
1482 | struct bfd_link_info *info; | |
1483 | struct ecoff_debug_info *debug; | |
1484 | const struct ecoff_debug_swap *swap; | |
1485 | bfd_boolean failed; | |
1486 | }; | |
9e756d64 | 1487 | |
a7519a3c RH |
1488 | static bfd_boolean |
1489 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1490 | { | |
1491 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1492 | bfd_boolean strip; | |
1493 | asection *sec, *output_section; | |
9e756d64 | 1494 | |
a7519a3c RH |
1495 | if (h->root.root.type == bfd_link_hash_warning) |
1496 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1497 | |
a7519a3c RH |
1498 | if (h->root.indx == -2) |
1499 | strip = FALSE; | |
1500 | else if ((h->root.def_dynamic | |
1501 | || h->root.ref_dynamic | |
1502 | || h->root.root.type == bfd_link_hash_new) | |
1503 | && !h->root.def_regular | |
1504 | && !h->root.ref_regular) | |
1505 | strip = TRUE; | |
1506 | else if (einfo->info->strip == strip_all | |
1507 | || (einfo->info->strip == strip_some | |
1508 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1509 | h->root.root.root.string, | |
1510 | FALSE, FALSE) == NULL)) | |
1511 | strip = TRUE; | |
1512 | else | |
1513 | strip = FALSE; | |
9e756d64 | 1514 | |
a7519a3c | 1515 | if (strip) |
b34976b6 | 1516 | return TRUE; |
9e756d64 | 1517 | |
a7519a3c | 1518 | if (h->esym.ifd == -2) |
9e756d64 | 1519 | { |
a7519a3c RH |
1520 | h->esym.jmptbl = 0; |
1521 | h->esym.cobol_main = 0; | |
1522 | h->esym.weakext = 0; | |
1523 | h->esym.reserved = 0; | |
1524 | h->esym.ifd = ifdNil; | |
1525 | h->esym.asym.value = 0; | |
1526 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1527 | |
a7519a3c RH |
1528 | if (h->root.root.type != bfd_link_hash_defined |
1529 | && h->root.root.type != bfd_link_hash_defweak) | |
1530 | h->esym.asym.sc = scAbs; | |
1531 | else | |
1532 | { | |
1533 | const char *name; | |
9e756d64 | 1534 | |
a7519a3c RH |
1535 | sec = h->root.root.u.def.section; |
1536 | output_section = sec->output_section; | |
9e756d64 | 1537 | |
a7519a3c RH |
1538 | /* When making a shared library and symbol h is the one from |
1539 | the another shared library, OUTPUT_SECTION may be null. */ | |
1540 | if (output_section == NULL) | |
1541 | h->esym.asym.sc = scUndefined; | |
1542 | else | |
1543 | { | |
1544 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1545 | |
a7519a3c RH |
1546 | if (strcmp (name, ".text") == 0) |
1547 | h->esym.asym.sc = scText; | |
1548 | else if (strcmp (name, ".data") == 0) | |
1549 | h->esym.asym.sc = scData; | |
1550 | else if (strcmp (name, ".sdata") == 0) | |
1551 | h->esym.asym.sc = scSData; | |
1552 | else if (strcmp (name, ".rodata") == 0 | |
1553 | || strcmp (name, ".rdata") == 0) | |
1554 | h->esym.asym.sc = scRData; | |
1555 | else if (strcmp (name, ".bss") == 0) | |
1556 | h->esym.asym.sc = scBss; | |
1557 | else if (strcmp (name, ".sbss") == 0) | |
1558 | h->esym.asym.sc = scSBss; | |
1559 | else if (strcmp (name, ".init") == 0) | |
1560 | h->esym.asym.sc = scInit; | |
1561 | else if (strcmp (name, ".fini") == 0) | |
1562 | h->esym.asym.sc = scFini; | |
1563 | else | |
1564 | h->esym.asym.sc = scAbs; | |
1565 | } | |
1566 | } | |
9e756d64 | 1567 | |
a7519a3c RH |
1568 | h->esym.asym.reserved = 0; |
1569 | h->esym.asym.index = indexNil; | |
1570 | } | |
9e756d64 | 1571 | |
a7519a3c RH |
1572 | if (h->root.root.type == bfd_link_hash_common) |
1573 | h->esym.asym.value = h->root.root.u.c.size; | |
1574 | else if (h->root.root.type == bfd_link_hash_defined | |
1575 | || h->root.root.type == bfd_link_hash_defweak) | |
1576 | { | |
1577 | if (h->esym.asym.sc == scCommon) | |
1578 | h->esym.asym.sc = scBss; | |
1579 | else if (h->esym.asym.sc == scSCommon) | |
1580 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1581 | |
a7519a3c RH |
1582 | sec = h->root.root.u.def.section; |
1583 | output_section = sec->output_section; | |
1584 | if (output_section != NULL) | |
1585 | h->esym.asym.value = (h->root.root.u.def.value | |
1586 | + sec->output_offset | |
1587 | + output_section->vma); | |
1588 | else | |
1589 | h->esym.asym.value = 0; | |
1590 | } | |
1591 | else if (h->root.needs_plt) | |
1592 | { | |
1593 | /* Set type and value for a symbol with a function stub. */ | |
1594 | h->esym.asym.st = stProc; | |
1595 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
1596 | if (sec == NULL) | |
1597 | h->esym.asym.value = 0; | |
1598 | else | |
1599 | { | |
1600 | output_section = sec->output_section; | |
1601 | if (output_section != NULL) | |
1602 | h->esym.asym.value = (h->root.plt.offset | |
1603 | + sec->output_offset | |
1604 | + output_section->vma); | |
1605 | else | |
1606 | h->esym.asym.value = 0; | |
1607 | } | |
1608 | } | |
9e756d64 | 1609 | |
a7519a3c RH |
1610 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1611 | h->root.root.root.string, | |
1612 | &h->esym)) | |
1613 | { | |
1614 | einfo->failed = TRUE; | |
1615 | return FALSE; | |
9e756d64 RH |
1616 | } |
1617 | ||
a7519a3c RH |
1618 | return TRUE; |
1619 | } | |
1620 | \f | |
1621 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1622 | |
a7519a3c RH |
1623 | static struct alpha_elf_got_entry * |
1624 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1625 | unsigned long r_type, unsigned long r_symndx, | |
1626 | bfd_vma r_addend) | |
1627 | { | |
1628 | struct alpha_elf_got_entry *gotent; | |
1629 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1630 | |
a7519a3c RH |
1631 | if (h) |
1632 | slot = &h->got_entries; | |
1633 | else | |
1634 | { | |
1635 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1636 | |
a7519a3c | 1637 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1638 | |
a7519a3c RH |
1639 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1640 | if (!local_got_entries) | |
1641 | { | |
1642 | bfd_size_type size; | |
1643 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1644 | |
a7519a3c RH |
1645 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1646 | size = symtab_hdr->sh_info; | |
1647 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1648 | |
a7519a3c RH |
1649 | local_got_entries |
1650 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1651 | if (!local_got_entries) | |
1652 | return NULL; | |
1653 | ||
1654 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1655 | } | |
1656 | ||
1657 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1658 | } |
1659 | ||
a7519a3c RH |
1660 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1661 | if (gotent->gotobj == abfd | |
1662 | && gotent->reloc_type == r_type | |
1663 | && gotent->addend == r_addend) | |
1664 | break; | |
1665 | ||
1666 | if (!gotent) | |
9e756d64 | 1667 | { |
a7519a3c RH |
1668 | int entry_size; |
1669 | bfd_size_type amt; | |
9e756d64 | 1670 | |
a7519a3c RH |
1671 | amt = sizeof (struct alpha_elf_got_entry); |
1672 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1673 | if (!gotent) | |
1674 | return NULL; | |
9e756d64 | 1675 | |
a7519a3c RH |
1676 | gotent->gotobj = abfd; |
1677 | gotent->addend = r_addend; | |
1678 | gotent->got_offset = -1; | |
1679 | gotent->use_count = 1; | |
1680 | gotent->reloc_type = r_type; | |
1681 | gotent->reloc_done = 0; | |
1682 | gotent->reloc_xlated = 0; | |
9e756d64 | 1683 | |
a7519a3c RH |
1684 | gotent->next = *slot; |
1685 | *slot = gotent; | |
9e756d64 | 1686 | |
a7519a3c RH |
1687 | entry_size = alpha_got_entry_size (r_type); |
1688 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1689 | if (!h) | |
1690 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1691 | } |
a7519a3c RH |
1692 | else |
1693 | gotent->use_count += 1; | |
9e756d64 | 1694 | |
a7519a3c | 1695 | return gotent; |
9e756d64 RH |
1696 | } |
1697 | ||
a7519a3c RH |
1698 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1699 | ||
b34976b6 | 1700 | static bfd_boolean |
a7519a3c RH |
1701 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1702 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1703 | { |
a7519a3c RH |
1704 | bfd *dynobj; |
1705 | asection *sreloc; | |
1706 | const char *rel_sec_name; | |
252b5132 | 1707 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1708 | struct alpha_elf_link_hash_entry **sym_hashes; |
1709 | const Elf_Internal_Rela *rel, *relend; | |
1710 | bfd_boolean got_created; | |
1711 | bfd_size_type amt; | |
252b5132 | 1712 | |
a7519a3c RH |
1713 | if (info->relocatable) |
1714 | return TRUE; | |
252b5132 | 1715 | |
a7519a3c RH |
1716 | /* Don't do anything special with non-loaded, non-alloced sections. |
1717 | In particular, any relocs in such sections should not affect GOT | |
1718 | and PLT reference counting (ie. we don't allow them to create GOT | |
1719 | or PLT entries), there's no possibility or desire to optimize TLS | |
1720 | relocs, and there's not much point in propagating relocs to shared | |
1721 | libs that the dynamic linker won't relocate. */ | |
1722 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1723 | return TRUE; |
252b5132 | 1724 | |
a7519a3c RH |
1725 | dynobj = elf_hash_table(info)->dynobj; |
1726 | if (dynobj == NULL) | |
1727 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
252b5132 | 1728 | |
a7519a3c RH |
1729 | sreloc = NULL; |
1730 | rel_sec_name = NULL; | |
1731 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1732 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
1733 | got_created = FALSE; | |
1734 | ||
1735 | relend = relocs + sec->reloc_count; | |
1736 | for (rel = relocs; rel < relend; ++rel) | |
1737 | { | |
1738 | enum { | |
1739 | NEED_GOT = 1, | |
1740 | NEED_GOT_ENTRY = 2, | |
1741 | NEED_DYNREL = 4 | |
1742 | }; | |
1743 | ||
1744 | unsigned long r_symndx, r_type; | |
1745 | struct alpha_elf_link_hash_entry *h; | |
1746 | unsigned int gotent_flags; | |
1747 | bfd_boolean maybe_dynamic; | |
1748 | unsigned int need; | |
1749 | bfd_vma addend; | |
1750 | ||
1751 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1752 | if (r_symndx < symtab_hdr->sh_info) | |
1753 | h = NULL; | |
1754 | else | |
1755 | { | |
1756 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1757 | |
a7519a3c RH |
1758 | while (h->root.root.type == bfd_link_hash_indirect |
1759 | || h->root.root.type == bfd_link_hash_warning) | |
1760 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1761 | |
a7519a3c RH |
1762 | h->root.ref_regular = 1; |
1763 | } | |
252b5132 | 1764 | |
a7519a3c RH |
1765 | /* We can only get preliminary data on whether a symbol is |
1766 | locally or externally defined, as not all of the input files | |
1767 | have yet been processed. Do something with what we know, as | |
1768 | this may help reduce memory usage and processing time later. */ | |
1769 | maybe_dynamic = FALSE; | |
1770 | if (h && ((info->shared | |
1771 | && (!info->symbolic | |
1772 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1773 | || !h->root.def_regular | |
1774 | || h->root.root.type == bfd_link_hash_defweak)) | |
1775 | maybe_dynamic = TRUE; | |
252b5132 | 1776 | |
a7519a3c RH |
1777 | need = 0; |
1778 | gotent_flags = 0; | |
1779 | r_type = ELF64_R_TYPE (rel->r_info); | |
1780 | addend = rel->r_addend; | |
9e756d64 | 1781 | |
9e756d64 RH |
1782 | switch (r_type) |
1783 | { | |
1784 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1785 | need = NEED_GOT | NEED_GOT_ENTRY; |
1786 | ||
1787 | /* Remember how this literal is used from its LITUSEs. | |
1788 | This will be important when it comes to decide if we can | |
1789 | create a .plt entry for a function symbol. */ | |
1790 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
1791 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
1792 | gotent_flags |= 1 << rel->r_addend; | |
1793 | --rel; | |
1794 | ||
1795 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1796 | if (gotent_flags == 0) | |
1797 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1798 | break; | |
1799 | ||
1800 | case R_ALPHA_GPDISP: | |
1801 | case R_ALPHA_GPREL16: | |
1802 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1803 | case R_ALPHA_GPRELHIGH: |
1804 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1805 | case R_ALPHA_BRSGP: |
1806 | need = NEED_GOT; | |
1807 | break; | |
1808 | ||
1809 | case R_ALPHA_REFLONG: | |
1810 | case R_ALPHA_REFQUAD: | |
1811 | if (info->shared || maybe_dynamic) | |
1812 | need = NEED_DYNREL; | |
cc03ec80 RH |
1813 | break; |
1814 | ||
9e756d64 | 1815 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1816 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1817 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1818 | r_symndx = 0; |
a7519a3c RH |
1819 | h = 0; |
1820 | maybe_dynamic = FALSE; | |
1821 | /* FALLTHRU */ | |
1822 | ||
1823 | case R_ALPHA_TLSGD: | |
1824 | case R_ALPHA_GOTDTPREL: | |
1825 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1826 | break; |
cc03ec80 | 1827 | |
a7519a3c RH |
1828 | case R_ALPHA_GOTTPREL: |
1829 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1830 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1831 | if (info->shared) | |
1832 | info->flags |= DF_STATIC_TLS; | |
1833 | break; | |
1834 | ||
1835 | case R_ALPHA_TPREL64: | |
1836 | if (info->shared || maybe_dynamic) | |
1837 | need = NEED_DYNREL; | |
1838 | if (info->shared) | |
1839 | info->flags |= DF_STATIC_TLS; | |
1840 | break; | |
252b5132 RH |
1841 | } |
1842 | ||
a7519a3c | 1843 | if (need & NEED_GOT) |
252b5132 | 1844 | { |
a7519a3c | 1845 | if (!got_created) |
6cdc0ccc | 1846 | { |
a7519a3c RH |
1847 | if (!elf64_alpha_create_got_section (abfd, info)) |
1848 | return FALSE; | |
cc03ec80 | 1849 | |
a7519a3c RH |
1850 | /* Make sure the object's gotobj is set to itself so |
1851 | that we default to every object with its own .got. | |
1852 | We'll merge .gots later once we've collected each | |
1853 | object's info. */ | |
1854 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
252b5132 | 1855 | |
a7519a3c | 1856 | got_created = 1; |
c328dc3f | 1857 | } |
252b5132 | 1858 | } |
252b5132 | 1859 | |
a7519a3c RH |
1860 | if (need & NEED_GOT_ENTRY) |
1861 | { | |
1862 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1863 | |
a7519a3c RH |
1864 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1865 | if (!gotent) | |
1866 | return FALSE; | |
4a67a098 | 1867 | |
a7519a3c | 1868 | if (gotent_flags) |
cc03ec80 | 1869 | { |
a7519a3c RH |
1870 | gotent->flags |= gotent_flags; |
1871 | if (h) | |
1872 | { | |
1873 | gotent_flags |= h->flags; | |
1874 | h->flags = gotent_flags; | |
4a67a098 | 1875 | |
a7519a3c RH |
1876 | /* Make a guess as to whether a .plt entry is needed. */ |
1877 | if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
1878 | && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
1879 | h->root.needs_plt = 1; | |
1880 | else | |
1881 | h->root.needs_plt = 0; | |
1882 | } | |
1883 | } | |
252b5132 RH |
1884 | } |
1885 | ||
a7519a3c | 1886 | if (need & NEED_DYNREL) |
9e756d64 | 1887 | { |
a7519a3c | 1888 | if (rel_sec_name == NULL) |
9e756d64 | 1889 | { |
a7519a3c RH |
1890 | rel_sec_name = (bfd_elf_string_from_elf_section |
1891 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1892 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1893 | if (rel_sec_name == NULL) | |
1894 | return FALSE; | |
1895 | ||
1896 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1897 | && strcmp (bfd_get_section_name (abfd, sec), | |
1898 | rel_sec_name+5) == 0); | |
9e756d64 | 1899 | } |
a7519a3c RH |
1900 | |
1901 | /* We need to create the section here now whether we eventually | |
1902 | use it or not so that it gets mapped to an output section by | |
1903 | the linker. If not used, we'll kill it in | |
1904 | size_dynamic_sections. */ | |
1905 | if (sreloc == NULL) | |
9e756d64 | 1906 | { |
a7519a3c RH |
1907 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
1908 | if (sreloc == NULL) | |
1909 | { | |
1910 | flagword flags; | |
1911 | ||
1912 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1913 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1914 | if (sec->flags & SEC_ALLOC) | |
1915 | flags |= SEC_ALLOC | SEC_LOAD; | |
1916 | sreloc = bfd_make_section_with_flags (dynobj, | |
1917 | rel_sec_name, | |
1918 | flags); | |
1919 | if (sreloc == NULL | |
1920 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1921 | return FALSE; | |
1922 | } | |
9e756d64 | 1923 | } |
252b5132 | 1924 | |
a7519a3c RH |
1925 | if (h) |
1926 | { | |
1927 | /* Since we havn't seen all of the input symbols yet, we | |
1928 | don't know whether we'll actually need a dynamic relocation | |
1929 | entry for this reloc. So make a record of it. Once we | |
1930 | find out if this thing needs dynamic relocation we'll | |
1931 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1932 | |
a7519a3c | 1933 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1934 | |
a7519a3c RH |
1935 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1936 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1937 | break; | |
252b5132 | 1938 | |
a7519a3c RH |
1939 | if (!rent) |
1940 | { | |
1941 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1942 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1943 | if (!rent) | |
1944 | return FALSE; | |
252b5132 | 1945 | |
a7519a3c RH |
1946 | rent->srel = sreloc; |
1947 | rent->rtype = r_type; | |
1948 | rent->count = 1; | |
1949 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1950 | |
a7519a3c RH |
1951 | rent->next = h->reloc_entries; |
1952 | h->reloc_entries = rent; | |
1953 | } | |
1954 | else | |
1955 | rent->count++; | |
1956 | } | |
1957 | else if (info->shared) | |
1958 | { | |
1959 | /* If this is a shared library, and the section is to be | |
1960 | loaded into memory, we need a RELATIVE reloc. */ | |
1961 | sreloc->size += sizeof (Elf64_External_Rela); | |
1962 | if (sec->flags & SEC_READONLY) | |
1963 | info->flags |= DF_TEXTREL; | |
1964 | } | |
252b5132 RH |
1965 | } |
1966 | } | |
1967 | ||
b34976b6 | 1968 | return TRUE; |
252b5132 | 1969 | } |
252b5132 | 1970 | |
a7519a3c RH |
1971 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1972 | regular object. The current definition is in some section of the | |
1973 | dynamic object, but we're not including those sections. We have to | |
1974 | change the definition to something the rest of the link can | |
1975 | understand. */ | |
252b5132 | 1976 | |
b34976b6 | 1977 | static bfd_boolean |
a7519a3c RH |
1978 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
1979 | struct elf_link_hash_entry *h) | |
252b5132 | 1980 | { |
a7519a3c RH |
1981 | bfd *dynobj; |
1982 | asection *s; | |
1983 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 1984 | |
a7519a3c RH |
1985 | dynobj = elf_hash_table(info)->dynobj; |
1986 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 1987 | |
a7519a3c RH |
1988 | /* Now that we've seen all of the input symbols, finalize our decision |
1989 | about whether this symbol should get a .plt entry. */ | |
252b5132 | 1990 | |
a7519a3c RH |
1991 | if (alpha_elf_dynamic_symbol_p (h, info) |
1992 | && ((h->type == STT_FUNC | |
1993 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
1994 | || (h->type == STT_NOTYPE | |
1995 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
1996 | && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))) | |
1997 | /* Don't prevent otherwise valid programs from linking by attempting | |
1998 | to create a new .got entry somewhere. A Correct Solution would be | |
1999 | to add a new .got section to a new object file and let it be merged | |
2000 | somewhere later. But for now don't bother. */ | |
2001 | && ah->got_entries) | |
252b5132 | 2002 | { |
a7519a3c | 2003 | h->needs_plt = 1; |
252b5132 | 2004 | |
a7519a3c RH |
2005 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2006 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2007 | return FALSE; | |
204692d7 | 2008 | |
a7519a3c RH |
2009 | /* The first bit of the .plt is reserved. */ |
2010 | if (s->size == 0) | |
2011 | s->size = PLT_HEADER_SIZE; | |
204692d7 | 2012 | |
a7519a3c RH |
2013 | h->plt.offset = s->size; |
2014 | s->size += PLT_ENTRY_SIZE; | |
204692d7 | 2015 | |
a7519a3c RH |
2016 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ |
2017 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2018 | BFD_ASSERT (s != NULL); | |
2019 | s->size += sizeof (Elf64_External_Rela); | |
252b5132 | 2020 | |
a7519a3c RH |
2021 | return TRUE; |
2022 | } | |
2023 | else | |
2024 | h->needs_plt = 0; | |
252b5132 | 2025 | |
a7519a3c RH |
2026 | /* If this is a weak symbol, and there is a real definition, the |
2027 | processor independent code will have arranged for us to see the | |
2028 | real definition first, and we can just use the same value. */ | |
2029 | if (h->u.weakdef != NULL) | |
252b5132 | 2030 | { |
a7519a3c RH |
2031 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2032 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2033 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2034 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2035 | return TRUE; | |
252b5132 | 2036 | } |
a7519a3c RH |
2037 | |
2038 | /* This is a reference to a symbol defined by a dynamic object which | |
2039 | is not a function. The Alpha, since it uses .got entries for all | |
2040 | symbols even in regular objects, does not need the hackery of a | |
2041 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2042 | |
b34976b6 | 2043 | return TRUE; |
252b5132 RH |
2044 | } |
2045 | ||
a7519a3c RH |
2046 | /* Symbol versioning can create new symbols, and make our old symbols |
2047 | indirect to the new ones. Consolidate the got and reloc information | |
2048 | in these situations. */ | |
252b5132 | 2049 | |
b34976b6 | 2050 | static bfd_boolean |
a7519a3c RH |
2051 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2052 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2053 | { |
a7519a3c | 2054 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2055 | |
a7519a3c RH |
2056 | if (hi->root.root.type != bfd_link_hash_indirect) |
2057 | return TRUE; | |
2058 | hs = hi; | |
2059 | do { | |
2060 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2061 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2062 | |
a7519a3c RH |
2063 | /* Merge the flags. Whee. */ |
2064 | ||
2065 | hs->flags |= hi->flags; | |
2066 | ||
2067 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2068 | doing so, since we don't need it anymore. */ | |
2069 | ||
2070 | if (hs->got_entries == NULL) | |
2071 | hs->got_entries = hi->got_entries; | |
2072 | else | |
2073 | { | |
2074 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2075 | ||
2076 | gsh = hs->got_entries; | |
2077 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2078 | { |
a7519a3c RH |
2079 | gin = gi->next; |
2080 | for (gs = gsh; gs ; gs = gs->next) | |
2081 | if (gi->gotobj == gs->gotobj | |
2082 | && gi->reloc_type == gs->reloc_type | |
2083 | && gi->addend == gs->addend) | |
2084 | { | |
2085 | gi->use_count += gs->use_count; | |
2086 | goto got_found; | |
2087 | } | |
2088 | gi->next = hs->got_entries; | |
2089 | hs->got_entries = gi; | |
2090 | got_found:; | |
252b5132 | 2091 | } |
a7519a3c RH |
2092 | } |
2093 | hi->got_entries = NULL; | |
252b5132 | 2094 | |
a7519a3c RH |
2095 | /* And similar for the reloc entries. */ |
2096 | ||
2097 | if (hs->reloc_entries == NULL) | |
2098 | hs->reloc_entries = hi->reloc_entries; | |
2099 | else | |
2100 | { | |
2101 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2102 | ||
2103 | rsh = hs->reloc_entries; | |
2104 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2105 | { | |
2106 | rin = ri->next; | |
2107 | for (rs = rsh; rs ; rs = rs->next) | |
2108 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2109 | { | |
2110 | rs->count += ri->count; | |
2111 | goto found_reloc; | |
2112 | } | |
2113 | ri->next = hs->reloc_entries; | |
2114 | hs->reloc_entries = ri; | |
2115 | found_reloc:; | |
2116 | } | |
252b5132 | 2117 | } |
a7519a3c | 2118 | hi->reloc_entries = NULL; |
252b5132 | 2119 | |
b34976b6 | 2120 | return TRUE; |
252b5132 RH |
2121 | } |
2122 | ||
a7519a3c | 2123 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2124 | |
b34976b6 | 2125 | static bfd_boolean |
a7519a3c | 2126 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2127 | { |
a7519a3c RH |
2128 | int total = alpha_elf_tdata (a)->total_got_size; |
2129 | bfd *bsub; | |
252b5132 | 2130 | |
a7519a3c RH |
2131 | /* Trivial quick fallout test. */ |
2132 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2133 | return TRUE; | |
252b5132 | 2134 | |
a7519a3c RH |
2135 | /* By their nature, local .got entries cannot be merged. */ |
2136 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2137 | return FALSE; |
252b5132 | 2138 | |
a7519a3c RH |
2139 | /* Failing the common trivial comparison, we must effectively |
2140 | perform the merge. Not actually performing the merge means that | |
2141 | we don't have to store undo information in case we fail. */ | |
2142 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2143 | { | |
2144 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2145 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2146 | int i, n; | |
2147 | ||
2148 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2149 | for (i = 0; i < n; ++i) | |
2150 | { | |
2151 | struct alpha_elf_got_entry *ae, *be; | |
2152 | struct alpha_elf_link_hash_entry *h; | |
2153 | ||
2154 | h = hashes[i]; | |
2155 | while (h->root.root.type == bfd_link_hash_indirect | |
2156 | || h->root.root.type == bfd_link_hash_warning) | |
2157 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2158 | ||
2159 | for (be = h->got_entries; be ; be = be->next) | |
2160 | { | |
2161 | if (be->use_count == 0) | |
2162 | continue; | |
2163 | if (be->gotobj != b) | |
2164 | continue; | |
2165 | ||
2166 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2167 | if (ae->gotobj == a | |
2168 | && ae->reloc_type == be->reloc_type | |
2169 | && ae->addend == be->addend) | |
2170 | goto global_found; | |
2171 | ||
2172 | total += alpha_got_entry_size (be->reloc_type); | |
2173 | if (total > MAX_GOT_SIZE) | |
2174 | return FALSE; | |
2175 | global_found:; | |
2176 | } | |
2177 | } | |
2178 | } | |
252b5132 | 2179 | |
b34976b6 | 2180 | return TRUE; |
252b5132 RH |
2181 | } |
2182 | ||
a7519a3c | 2183 | /* Actually merge two .got tables. */ |
252b5132 | 2184 | |
a7519a3c RH |
2185 | static void |
2186 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2187 | { |
a7519a3c RH |
2188 | int total = alpha_elf_tdata (a)->total_got_size; |
2189 | bfd *bsub; | |
252b5132 | 2190 | |
a7519a3c RH |
2191 | /* Remember local expansion. */ |
2192 | { | |
2193 | int e = alpha_elf_tdata (b)->local_got_size; | |
2194 | total += e; | |
2195 | alpha_elf_tdata (a)->local_got_size += e; | |
2196 | } | |
252b5132 | 2197 | |
a7519a3c RH |
2198 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2199 | { | |
2200 | struct alpha_elf_got_entry **local_got_entries; | |
2201 | struct alpha_elf_link_hash_entry **hashes; | |
2202 | Elf_Internal_Shdr *symtab_hdr; | |
2203 | int i, n; | |
252b5132 | 2204 | |
a7519a3c RH |
2205 | /* Let the local .got entries know they are part of a new subsegment. */ |
2206 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2207 | if (local_got_entries) | |
2208 | { | |
2209 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2210 | for (i = 0; i < n; ++i) | |
2211 | { | |
2212 | struct alpha_elf_got_entry *ent; | |
2213 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2214 | ent->gotobj = a; | |
2215 | } | |
2216 | } | |
252b5132 | 2217 | |
a7519a3c RH |
2218 | /* Merge the global .got entries. */ |
2219 | hashes = alpha_elf_sym_hashes (bsub); | |
2220 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2221 | |
a7519a3c RH |
2222 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2223 | for (i = 0; i < n; ++i) | |
2224 | { | |
2225 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2226 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2227 | |
a7519a3c RH |
2228 | h = hashes[i]; |
2229 | while (h->root.root.type == bfd_link_hash_indirect | |
2230 | || h->root.root.type == bfd_link_hash_warning) | |
2231 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2232 | |
a7519a3c RH |
2233 | pbe = start = &h->got_entries; |
2234 | while ((be = *pbe) != NULL) | |
2235 | { | |
2236 | if (be->use_count == 0) | |
2237 | { | |
2238 | *pbe = be->next; | |
2239 | memset (be, 0xa5, sizeof (*be)); | |
2240 | goto kill; | |
2241 | } | |
2242 | if (be->gotobj != b) | |
2243 | goto next; | |
2244 | ||
2245 | for (ae = *start; ae ; ae = ae->next) | |
2246 | if (ae->gotobj == a | |
2247 | && ae->reloc_type == be->reloc_type | |
2248 | && ae->addend == be->addend) | |
2249 | { | |
2250 | ae->flags |= be->flags; | |
2251 | ae->use_count += be->use_count; | |
2252 | *pbe = be->next; | |
2253 | memset (be, 0xa5, sizeof (*be)); | |
2254 | goto kill; | |
2255 | } | |
2256 | be->gotobj = a; | |
2257 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2258 | |
a7519a3c RH |
2259 | next:; |
2260 | pbe = &be->next; | |
2261 | kill:; | |
2262 | } | |
2263 | } | |
252b5132 | 2264 | |
a7519a3c RH |
2265 | alpha_elf_tdata (bsub)->gotobj = a; |
2266 | } | |
2267 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2268 | |
a7519a3c RH |
2269 | /* Merge the two in_got chains. */ |
2270 | { | |
2271 | bfd *next; | |
252b5132 | 2272 | |
a7519a3c RH |
2273 | bsub = a; |
2274 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2275 | bsub = next; | |
252b5132 | 2276 | |
a7519a3c RH |
2277 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2278 | } | |
252b5132 | 2279 | } |
a7519a3c RH |
2280 | |
2281 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2282 | |
b34976b6 | 2283 | static bfd_boolean |
a7519a3c RH |
2284 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2285 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2286 | { |
a7519a3c RH |
2287 | bfd_boolean result = TRUE; |
2288 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 2289 | |
a7519a3c RH |
2290 | if (h->root.root.type == bfd_link_hash_warning) |
2291 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2292 | |
a7519a3c RH |
2293 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2294 | if (gotent->use_count > 0) | |
2295 | { | |
2296 | struct alpha_elf_obj_tdata *td; | |
2297 | bfd_size_type *plge; | |
252b5132 | 2298 | |
a7519a3c RH |
2299 | td = alpha_elf_tdata (gotent->gotobj); |
2300 | if (td == NULL) | |
2301 | { | |
2302 | _bfd_error_handler (_("Symbol %s has no GOT subsection for offset 0x%x"), | |
2303 | h->root.root.root.string, gotent->got_offset); | |
2304 | result = FALSE; | |
2305 | continue; | |
2306 | } | |
2307 | plge = &td->got->size; | |
2308 | gotent->got_offset = *plge; | |
2309 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2310 | } | |
252b5132 | 2311 | |
a7519a3c RH |
2312 | return result; |
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 RH |
2363 | bfd *i, *got_list, *cur_got_obj = NULL; |
2364 | int something_changed = 0; | |
252b5132 | 2365 | |
a7519a3c | 2366 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2367 | |
a7519a3c RH |
2368 | /* On the first time through, pretend we have an existing got list |
2369 | consisting of all of the input files. */ | |
2370 | if (got_list == NULL) | |
252b5132 | 2371 | { |
a7519a3c | 2372 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2373 | { |
a7519a3c RH |
2374 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2375 | if (this_got == NULL) | |
2376 | continue; | |
252b5132 | 2377 | |
a7519a3c RH |
2378 | /* We are assuming no merging has yet occurred. */ |
2379 | BFD_ASSERT (this_got == i); | |
252b5132 | 2380 | |
a7519a3c | 2381 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2382 | { |
a7519a3c RH |
2383 | /* Yikes! A single object file has too many entries. */ |
2384 | (*_bfd_error_handler) | |
2385 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2386 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2387 | return FALSE; |
252b5132 | 2388 | } |
252b5132 | 2389 | |
a7519a3c RH |
2390 | if (got_list == NULL) |
2391 | got_list = this_got; | |
2392 | else | |
2393 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2394 | cur_got_obj = this_got; | |
252b5132 RH |
2395 | } |
2396 | ||
a7519a3c RH |
2397 | /* Strange degenerate case of no got references. */ |
2398 | if (got_list == NULL) | |
2399 | return TRUE; | |
2400 | ||
2401 | alpha_elf_hash_table (info)->got_list = got_list; | |
2402 | ||
2403 | /* Force got offsets to be recalculated. */ | |
2404 | something_changed = 1; | |
2405 | } | |
2406 | ||
2407 | cur_got_obj = got_list; | |
2408 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2409 | while (i != NULL) | |
2410 | { | |
2411 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2412 | { |
a7519a3c | 2413 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2414 | |
a7519a3c RH |
2415 | alpha_elf_tdata(i)->got->size = 0; |
2416 | i = alpha_elf_tdata(i)->got_link_next; | |
2417 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2418 | ||
2419 | something_changed = 1; | |
2420 | } | |
2421 | else | |
2422 | { | |
2423 | cur_got_obj = i; | |
2424 | i = alpha_elf_tdata(i)->got_link_next; | |
2425 | } | |
252b5132 RH |
2426 | } |
2427 | ||
a7519a3c RH |
2428 | /* Once the gots have been merged, fill in the got offsets for |
2429 | everything therein. */ | |
2430 | if (1 || something_changed) | |
2431 | elf64_alpha_calc_got_offsets (info); | |
252b5132 | 2432 | |
a7519a3c | 2433 | return TRUE; |
252b5132 | 2434 | } |
252b5132 | 2435 | |
b34976b6 | 2436 | static bfd_boolean |
a7519a3c | 2437 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2438 | { |
a7519a3c RH |
2439 | asection *splt = (asection *) data; |
2440 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 2441 | |
a7519a3c RH |
2442 | /* If we didn't need an entry before, we still don't. */ |
2443 | if (!h->root.needs_plt) | |
2444 | return TRUE; | |
e92d460e | 2445 | |
a7519a3c RH |
2446 | /* There must still be a LITERAL got entry for the function. */ |
2447 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2448 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2449 | && gotent->use_count > 0) | |
2450 | break; | |
2451 | ||
2452 | /* If there is, reset the PLT offset. If not, there's no longer | |
2453 | a need for the PLT entry. */ | |
2454 | if (gotent) | |
2455 | { | |
2456 | if (splt->size == 0) | |
2457 | splt->size = PLT_HEADER_SIZE; | |
2458 | h->root.plt.offset = splt->size; | |
2459 | splt->size += PLT_ENTRY_SIZE; | |
2460 | } | |
252b5132 | 2461 | else |
a7519a3c RH |
2462 | { |
2463 | h->root.needs_plt = 0; | |
2464 | h->root.plt.offset = -1; | |
a7519a3c RH |
2465 | } |
2466 | ||
2467 | return TRUE; | |
2468 | } | |
2469 | ||
2470 | /* Called from relax_section to rebuild the PLT in light of | |
2471 | potential changes in the function's status. */ | |
2472 | ||
2473 | static bfd_boolean | |
2474 | elf64_alpha_size_plt_section (struct bfd_link_info *info) | |
2475 | { | |
2476 | asection *splt, *spltrel; | |
2477 | unsigned long entries; | |
2478 | bfd *dynobj; | |
2479 | ||
2480 | dynobj = elf_hash_table(info)->dynobj; | |
2481 | splt = bfd_get_section_by_name(dynobj, ".plt"); | |
2482 | if (splt == NULL) | |
b34976b6 | 2483 | return TRUE; |
252b5132 | 2484 | |
a7519a3c | 2485 | splt->size = 0; |
252b5132 | 2486 | |
a7519a3c RH |
2487 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2488 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2489 | |
a7519a3c RH |
2490 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2491 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2492 | if (splt->size) | |
2493 | entries = (splt->size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
2494 | else | |
2495 | entries = 0; | |
2496 | spltrel->size = entries * sizeof (Elf64_External_Rela); | |
e92d460e | 2497 | |
a7519a3c RH |
2498 | return TRUE; |
2499 | } | |
e92d460e | 2500 | |
a7519a3c RH |
2501 | static bfd_boolean |
2502 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2503 | struct bfd_link_info *info) | |
2504 | { | |
2505 | bfd *i; | |
252b5132 | 2506 | |
a7519a3c RH |
2507 | if (info->relocatable) |
2508 | return TRUE; | |
252b5132 | 2509 | |
a7519a3c RH |
2510 | /* First, take care of the indirect symbols created by versioning. */ |
2511 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2512 | elf64_alpha_merge_ind_symbols, | |
2513 | NULL); | |
252b5132 | 2514 | |
a7519a3c RH |
2515 | if (!elf64_alpha_size_got_sections (info)) |
2516 | return FALSE; | |
252b5132 | 2517 | |
a7519a3c RH |
2518 | /* Allocate space for all of the .got subsections. */ |
2519 | i = alpha_elf_hash_table (info)->got_list; | |
2520 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2521 | { |
a7519a3c RH |
2522 | asection *s = alpha_elf_tdata(i)->got; |
2523 | if (s->size > 0) | |
2524 | { | |
2525 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2526 | if (s->contents == NULL) | |
2527 | return FALSE; | |
2528 | } | |
252b5132 RH |
2529 | } |
2530 | ||
b34976b6 | 2531 | return TRUE; |
252b5132 | 2532 | } |
3765b1be | 2533 | |
a7519a3c | 2534 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2535 | |
a7519a3c RH |
2536 | static int |
2537 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2538 | { | |
2539 | switch (r_type) | |
3765b1be | 2540 | { |
a7519a3c RH |
2541 | /* May appear in GOT entries. */ |
2542 | case R_ALPHA_TLSGD: | |
2543 | return (dynamic ? 2 : shared ? 1 : 0); | |
2544 | case R_ALPHA_TLSLDM: | |
2545 | return shared; | |
2546 | case R_ALPHA_LITERAL: | |
2547 | case R_ALPHA_GOTTPREL: | |
2548 | return dynamic || shared; | |
2549 | case R_ALPHA_GOTDTPREL: | |
2550 | return dynamic; | |
3765b1be | 2551 | |
a7519a3c RH |
2552 | /* May appear in data sections. */ |
2553 | case R_ALPHA_REFLONG: | |
2554 | case R_ALPHA_REFQUAD: | |
2555 | case R_ALPHA_TPREL64: | |
2556 | return dynamic || shared; | |
3765b1be | 2557 | |
a7519a3c RH |
2558 | /* Everything else is illegal. We'll issue an error during |
2559 | relocate_section. */ | |
2560 | default: | |
2561 | return 0; | |
2562 | } | |
2563 | } | |
3765b1be | 2564 | |
a7519a3c | 2565 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2566 | |
a7519a3c RH |
2567 | static bfd_boolean |
2568 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2569 | struct bfd_link_info *info) | |
2570 | { | |
2571 | bfd_boolean dynamic; | |
2572 | struct alpha_elf_reloc_entry *relent; | |
2573 | unsigned long entries; | |
3765b1be | 2574 | |
a7519a3c RH |
2575 | if (h->root.root.type == bfd_link_hash_warning) |
2576 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2577 | |
a7519a3c RH |
2578 | /* If the symbol was defined as a common symbol in a regular object |
2579 | file, and there was no definition in any dynamic object, then the | |
2580 | linker will have allocated space for the symbol in a common | |
2581 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2582 | set. This is done for dynamic symbols in | |
2583 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2584 | symbols, somehow. */ | |
2585 | if (!h->root.def_regular | |
2586 | && h->root.ref_regular | |
2587 | && !h->root.def_dynamic | |
2588 | && (h->root.root.type == bfd_link_hash_defined | |
2589 | || h->root.root.type == bfd_link_hash_defweak) | |
2590 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2591 | h->root.def_regular = 1; | |
3765b1be | 2592 | |
a7519a3c RH |
2593 | /* If the symbol is dynamic, we'll need all the relocations in their |
2594 | natural form. If this is a shared object, and it has been forced | |
2595 | local, we'll need the same number of RELATIVE relocations. */ | |
2596 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2597 | |
a7519a3c RH |
2598 | /* If the symbol is a hidden undefined weak, then we never have any |
2599 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2600 | based on info->shared. */ | |
2601 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2602 | return TRUE; | |
2603 | ||
2604 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2605 | { |
a7519a3c RH |
2606 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2607 | info->shared); | |
2608 | if (entries) | |
2609 | { | |
2610 | relent->srel->size += | |
2611 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2612 | if (relent->reltext) | |
2613 | info->flags |= DT_TEXTREL; | |
2614 | } | |
2615 | } | |
3765b1be | 2616 | |
a7519a3c RH |
2617 | return TRUE; |
2618 | } | |
3765b1be | 2619 | |
a7519a3c RH |
2620 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2621 | global symbols. */ | |
3765b1be | 2622 | |
a7519a3c RH |
2623 | static bfd_boolean |
2624 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2625 | struct bfd_link_info *info) | |
2626 | { | |
2627 | bfd_boolean dynamic; | |
2628 | struct alpha_elf_got_entry *gotent; | |
2629 | unsigned long entries; | |
3765b1be | 2630 | |
a7519a3c RH |
2631 | if (h->root.root.type == bfd_link_hash_warning) |
2632 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2633 | ||
2634 | /* If the symbol is dynamic, we'll need all the relocations in their | |
2635 | natural form. If this is a shared object, and it has been forced | |
2636 | local, we'll need the same number of RELATIVE relocations. */ | |
2637 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2638 | ||
2639 | /* If the symbol is a hidden undefined weak, then we never have any | |
2640 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2641 | based on info->shared. */ | |
2642 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2643 | return TRUE; | |
2644 | ||
2645 | entries = 0; | |
2646 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2647 | if (gotent->use_count > 0) | |
2648 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2649 | dynamic, info->shared); | |
2650 | ||
2651 | /* If we are using a .plt entry, subtract one, as the first | |
2652 | reference uses a .rela.plt entry instead. */ | |
2653 | if (h->root.plt.offset != MINUS_ONE) | |
2654 | entries--; | |
2655 | ||
2656 | if (entries > 0) | |
2657 | { | |
2658 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2659 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2660 | BFD_ASSERT (srel != NULL); | |
2661 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2662 | } |
3765b1be | 2663 | |
a7519a3c | 2664 | return TRUE; |
3765b1be RH |
2665 | } |
2666 | ||
a7519a3c | 2667 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2668 | |
b34976b6 | 2669 | static bfd_boolean |
a7519a3c | 2670 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2671 | { |
a7519a3c RH |
2672 | unsigned long entries; |
2673 | bfd *i, *dynobj; | |
2674 | asection *srel; | |
252b5132 | 2675 | |
a7519a3c RH |
2676 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2677 | require attention for the main application as well. */ | |
252b5132 | 2678 | |
a7519a3c RH |
2679 | entries = 0; |
2680 | for (i = alpha_elf_hash_table(info)->got_list; | |
2681 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2682 | { | |
2683 | bfd *j; | |
3241278a | 2684 | |
a7519a3c RH |
2685 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2686 | { | |
2687 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2688 | int k, n; | |
252b5132 | 2689 | |
a7519a3c RH |
2690 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2691 | if (!local_got_entries) | |
2692 | continue; | |
252b5132 | 2693 | |
a7519a3c RH |
2694 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2695 | for (gotent = local_got_entries[k]; | |
2696 | gotent ; gotent = gotent->next) | |
2697 | if (gotent->use_count > 0) | |
2698 | entries += (alpha_dynamic_entries_for_reloc | |
2699 | (gotent->reloc_type, 0, info->shared)); | |
2700 | } | |
2701 | } | |
3765b1be | 2702 | |
a7519a3c RH |
2703 | dynobj = elf_hash_table(info)->dynobj; |
2704 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2705 | if (!srel) | |
2706 | { | |
2707 | BFD_ASSERT (entries == 0); | |
2708 | return TRUE; | |
2709 | } | |
2710 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2711 | |
a7519a3c RH |
2712 | /* Now do the non-local symbols. */ |
2713 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2714 | elf64_alpha_size_rela_got_1, info); | |
252b5132 | 2715 | |
a7519a3c RH |
2716 | return TRUE; |
2717 | } | |
252b5132 | 2718 | |
a7519a3c | 2719 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2720 | |
a7519a3c RH |
2721 | static bfd_boolean |
2722 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2723 | struct bfd_link_info *info) | |
2724 | { | |
2725 | bfd *dynobj; | |
2726 | asection *s; | |
2727 | bfd_boolean relplt; | |
3765b1be | 2728 | |
a7519a3c RH |
2729 | dynobj = elf_hash_table(info)->dynobj; |
2730 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2731 | |
a7519a3c RH |
2732 | if (elf_hash_table (info)->dynamic_sections_created) |
2733 | { | |
2734 | /* Set the contents of the .interp section to the interpreter. */ | |
2735 | if (info->executable) | |
252b5132 | 2736 | { |
a7519a3c RH |
2737 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2738 | BFD_ASSERT (s != NULL); | |
2739 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2740 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2741 | } | |
3765b1be | 2742 | |
a7519a3c RH |
2743 | /* Now that we've seen all of the input files, we can decide which |
2744 | symbols need dynamic relocation entries and which don't. We've | |
2745 | collected information in check_relocs that we can now apply to | |
2746 | size the dynamic relocation sections. */ | |
2747 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2748 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2749 | |
a7519a3c RH |
2750 | elf64_alpha_size_rela_got_section (info); |
2751 | } | |
2752 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2753 | |
a7519a3c RH |
2754 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2755 | determined the sizes of the various dynamic sections. Allocate | |
2756 | memory for them. */ | |
2757 | relplt = FALSE; | |
2758 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2759 | { | |
2760 | const char *name; | |
2761 | bfd_boolean strip; | |
3765b1be | 2762 | |
a7519a3c RH |
2763 | if (!(s->flags & SEC_LINKER_CREATED)) |
2764 | continue; | |
cc03ec80 | 2765 | |
a7519a3c RH |
2766 | /* It's OK to base decisions on the section name, because none |
2767 | of the dynobj section names depend upon the input files. */ | |
2768 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2769 | |
a7519a3c RH |
2770 | /* If we don't need this section, strip it from the output file. |
2771 | This is to handle .rela.bss and .rela.plt. We must create it | |
2772 | in create_dynamic_sections, because it must be created before | |
2773 | the linker maps input sections to output sections. The | |
2774 | linker does that before adjust_dynamic_symbol is called, and | |
2775 | it is that function which decides whether anything needs to | |
2776 | go into these sections. */ | |
3765b1be | 2777 | |
a7519a3c | 2778 | strip = FALSE; |
3765b1be | 2779 | |
a7519a3c | 2780 | if (strncmp (name, ".rela", 5) == 0) |
3765b1be | 2781 | { |
a7519a3c | 2782 | strip = (s->size == 0); |
252b5132 | 2783 | |
a7519a3c RH |
2784 | if (!strip) |
2785 | { | |
2786 | if (strcmp(name, ".rela.plt") == 0) | |
2787 | relplt = TRUE; | |
252b5132 | 2788 | |
a7519a3c RH |
2789 | /* We use the reloc_count field as a counter if we need |
2790 | to copy relocs into the output file. */ | |
2791 | s->reloc_count = 0; | |
252b5132 | 2792 | } |
3765b1be | 2793 | } |
a7519a3c | 2794 | else if (strcmp (name, ".plt") != 0) |
3765b1be | 2795 | { |
a7519a3c RH |
2796 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2797 | continue; | |
2798 | } | |
252b5132 | 2799 | |
a7519a3c RH |
2800 | if (strip) |
2801 | s->flags |= SEC_EXCLUDE; | |
2802 | else | |
2803 | { | |
2804 | /* Allocate memory for the section contents. */ | |
2805 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2806 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 2807 | return FALSE; |
a7519a3c RH |
2808 | } |
2809 | } | |
3765b1be | 2810 | |
a7519a3c RH |
2811 | if (elf_hash_table (info)->dynamic_sections_created) |
2812 | { | |
2813 | /* Add some entries to the .dynamic section. We fill in the | |
2814 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2815 | must add the entries now so that we get the correct size for | |
2816 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2817 | dynamic linker and used by the debugger. */ | |
2818 | #define add_dynamic_entry(TAG, VAL) \ | |
2819 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2820 | |
a7519a3c RH |
2821 | if (info->executable) |
2822 | { | |
2823 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2824 | return FALSE; | |
3765b1be RH |
2825 | } |
2826 | ||
a7519a3c | 2827 | if (relplt) |
3765b1be | 2828 | { |
a7519a3c RH |
2829 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2830 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2831 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2832 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2833 | return FALSE; | |
2834 | } | |
252b5132 | 2835 | |
a7519a3c RH |
2836 | if (!add_dynamic_entry (DT_RELA, 0) |
2837 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2838 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2839 | return FALSE; | |
2840 | ||
2841 | if (info->flags & DF_TEXTREL) | |
2842 | { | |
2843 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2844 | return FALSE; | |
252b5132 RH |
2845 | } |
2846 | } | |
a7519a3c | 2847 | #undef add_dynamic_entry |
252b5132 | 2848 | |
b34976b6 | 2849 | return TRUE; |
252b5132 | 2850 | } |
a7519a3c RH |
2851 | \f |
2852 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2853 | |
a7519a3c RH |
2854 | Currently I'm only handling what I can do with existing compiler |
2855 | and assembler support, which means no instructions are removed, | |
2856 | though some may be nopped. At this time GCC does not emit enough | |
2857 | information to do all of the relaxing that is possible. It will | |
2858 | take some not small amount of work for that to happen. | |
252b5132 | 2859 | |
a7519a3c RH |
2860 | There are a couple of interesting papers that I once read on this |
2861 | subject, that I cannot find references to at the moment, that | |
2862 | related to Alpha in particular. They are by David Wall, then of | |
2863 | DEC WRL. */ | |
252b5132 | 2864 | |
a7519a3c RH |
2865 | #define OP_LDA 0x08 |
2866 | #define OP_LDAH 0x09 | |
2867 | #define INSN_JSR 0x68004000 | |
2868 | #define INSN_JSR_MASK 0xfc00c000 | |
2869 | #define OP_LDQ 0x29 | |
2870 | #define OP_BR 0x30 | |
2871 | #define OP_BSR 0x34 | |
2872 | #define INSN_UNOP 0x2ffe0000 | |
2873 | #define INSN_ADDQ 0x40000400 | |
2874 | #define INSN_RDUNIQ 0x0000009e | |
252b5132 | 2875 | |
a7519a3c RH |
2876 | struct alpha_relax_info |
2877 | { | |
2878 | bfd *abfd; | |
2879 | asection *sec; | |
2880 | bfd_byte *contents; | |
2881 | Elf_Internal_Shdr *symtab_hdr; | |
2882 | Elf_Internal_Rela *relocs, *relend; | |
2883 | struct bfd_link_info *link_info; | |
2884 | bfd_vma gp; | |
2885 | bfd *gotobj; | |
2886 | asection *tsec; | |
2887 | struct alpha_elf_link_hash_entry *h; | |
2888 | struct alpha_elf_got_entry **first_gotent; | |
2889 | struct alpha_elf_got_entry *gotent; | |
2890 | bfd_boolean changed_contents; | |
2891 | bfd_boolean changed_relocs; | |
2892 | unsigned char other; | |
2893 | }; | |
252b5132 | 2894 | |
a7519a3c RH |
2895 | static Elf_Internal_Rela * |
2896 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2897 | Elf_Internal_Rela *relend, | |
2898 | bfd_vma offset, int type) | |
2899 | { | |
2900 | while (rel < relend) | |
252b5132 | 2901 | { |
a7519a3c RH |
2902 | if (rel->r_offset == offset |
2903 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2904 | return rel; | |
2905 | ++rel; | |
2906 | } | |
2907 | return NULL; | |
2908 | } | |
252b5132 | 2909 | |
a7519a3c RH |
2910 | static bfd_boolean |
2911 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2912 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2913 | { | |
2914 | unsigned int insn; | |
2915 | bfd_signed_vma disp; | |
252b5132 | 2916 | |
a7519a3c RH |
2917 | /* Get the instruction. */ |
2918 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2919 | |
a7519a3c RH |
2920 | if (insn >> 26 != OP_LDQ) |
2921 | { | |
2922 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2923 | ((*_bfd_error_handler) | |
2924 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2925 | info->abfd, info->sec, | |
2926 | (unsigned long) irel->r_offset, howto->name)); | |
2927 | return TRUE; | |
2928 | } | |
252b5132 | 2929 | |
a7519a3c RH |
2930 | /* Can't relax dynamic symbols. */ |
2931 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2932 | return TRUE; | |
252b5132 | 2933 | |
a7519a3c RH |
2934 | /* Can't use local-exec relocations in shared libraries. */ |
2935 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2936 | return TRUE; | |
252b5132 | 2937 | |
a7519a3c RH |
2938 | if (r_type == R_ALPHA_LITERAL) |
2939 | { | |
2940 | /* Look for nice constant addresses. This includes the not-uncommon | |
2941 | special case of 0 for undefweak symbols. */ | |
2942 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2943 | || (!info->link_info->shared | |
2944 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2945 | { | |
2946 | disp = 0; | |
2947 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2948 | insn |= (symval & 0xffff); | |
2949 | r_type = R_ALPHA_NONE; | |
2950 | } | |
2951 | else | |
2952 | { | |
2953 | disp = symval - info->gp; | |
2954 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2955 | r_type = R_ALPHA_GPREL16; | |
2956 | } | |
252b5132 RH |
2957 | } |
2958 | else | |
252b5132 | 2959 | { |
a7519a3c | 2960 | bfd_vma dtp_base, tp_base; |
252b5132 | 2961 | |
a7519a3c RH |
2962 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2963 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2964 | tp_base = alpha_get_tprel_base (info->link_info); | |
2965 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2966 | |
a7519a3c | 2967 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2968 | |
a7519a3c RH |
2969 | switch (r_type) |
2970 | { | |
2971 | case R_ALPHA_GOTDTPREL: | |
2972 | r_type = R_ALPHA_DTPREL16; | |
2973 | break; | |
2974 | case R_ALPHA_GOTTPREL: | |
2975 | r_type = R_ALPHA_TPREL16; | |
2976 | break; | |
2977 | default: | |
2978 | BFD_ASSERT (0); | |
2979 | return FALSE; | |
2980 | } | |
2981 | } | |
252b5132 | 2982 | |
a7519a3c | 2983 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 2984 | return TRUE; |
252b5132 | 2985 | |
a7519a3c RH |
2986 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
2987 | info->changed_contents = TRUE; | |
252b5132 | 2988 | |
a7519a3c RH |
2989 | /* Reduce the use count on this got entry by one, possibly |
2990 | eliminating it. */ | |
2991 | if (--info->gotent->use_count == 0) | |
252b5132 | 2992 | { |
a7519a3c RH |
2993 | int sz = alpha_got_entry_size (r_type); |
2994 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
2995 | if (!info->h) | |
2996 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 2997 | } |
252b5132 | 2998 | |
a7519a3c RH |
2999 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3000 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3001 | info->changed_relocs = TRUE; | |
3002 | ||
3003 | /* ??? Search forward through this basic block looking for insns | |
3004 | that use the target register. Stop after an insn modifying the | |
3005 | register is seen, or after a branch or call. | |
252b5132 | 3006 | |
a7519a3c RH |
3007 | Any such memory load insn may be substituted by a load directly |
3008 | off the GP. This allows the memory load insn to be issued before | |
3009 | the calculated GP register would otherwise be ready. | |
252b5132 | 3010 | |
a7519a3c RH |
3011 | Any such jsr insn can be replaced by a bsr if it is in range. |
3012 | ||
3013 | This would mean that we'd have to _add_ relocations, the pain of | |
3014 | which gives one pause. */ | |
252b5132 | 3015 | |
b34976b6 | 3016 | return TRUE; |
252b5132 RH |
3017 | } |
3018 | ||
a7519a3c RH |
3019 | static bfd_vma |
3020 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3021 | { |
a7519a3c RH |
3022 | /* If the function has the same gp, and we can identify that the |
3023 | function does not use its function pointer, we can eliminate the | |
3024 | address load. */ | |
252b5132 | 3025 | |
a7519a3c RH |
3026 | /* If the symbol is marked NOPV, we are being told the function never |
3027 | needs its procedure value. */ | |
3028 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3029 | return symval; | |
252b5132 | 3030 | |
a7519a3c RH |
3031 | /* If the symbol is marked STD_GP, we are being told the function does |
3032 | a normal ldgp in the first two words. */ | |
3033 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3034 | ; | |
252b5132 | 3035 | |
a7519a3c RH |
3036 | /* Otherwise, we may be able to identify a GP load in the first two |
3037 | words, which we can then skip. */ | |
3038 | else | |
252b5132 | 3039 | { |
a7519a3c RH |
3040 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3041 | bfd_vma ofs; | |
252b5132 | 3042 | |
a7519a3c RH |
3043 | /* Load the relocations from the section that the target symbol is in. */ |
3044 | if (info->sec == info->tsec) | |
252b5132 | 3045 | { |
a7519a3c RH |
3046 | tsec_relocs = info->relocs; |
3047 | tsec_relend = info->relend; | |
3048 | tsec_free = NULL; | |
3049 | } | |
3050 | else | |
3051 | { | |
3052 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3053 | (info->abfd, info->tsec, (PTR) NULL, | |
3054 | (Elf_Internal_Rela *) NULL, | |
3055 | info->link_info->keep_memory)); | |
3056 | if (tsec_relocs == NULL) | |
3057 | return 0; | |
3058 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3059 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3060 | } | |
252b5132 | 3061 | |
a7519a3c RH |
3062 | /* Recover the symbol's offset within the section. */ |
3063 | ofs = (symval - info->tsec->output_section->vma | |
3064 | - info->tsec->output_offset); | |
252b5132 | 3065 | |
a7519a3c RH |
3066 | /* Look for a GPDISP reloc. */ |
3067 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3068 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3069 | |
a7519a3c RH |
3070 | if (!gpdisp || gpdisp->r_addend != 4) |
3071 | { | |
3072 | if (tsec_free) | |
3073 | free (tsec_free); | |
3074 | return 0; | |
252b5132 | 3075 | } |
a7519a3c RH |
3076 | if (tsec_free) |
3077 | free (tsec_free); | |
252b5132 RH |
3078 | } |
3079 | ||
a7519a3c RH |
3080 | /* We've now determined that we can skip an initial gp load. Verify |
3081 | that the call and the target use the same gp. */ | |
3082 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
3083 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
3084 | return 0; | |
252b5132 | 3085 | |
a7519a3c RH |
3086 | return symval + 8; |
3087 | } | |
252b5132 | 3088 | |
a7519a3c RH |
3089 | static bfd_boolean |
3090 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3091 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3092 | { |
a7519a3c RH |
3093 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3094 | int flags, count, i; | |
3095 | bfd_signed_vma disp; | |
3096 | bfd_boolean fits16; | |
3097 | bfd_boolean fits32; | |
3098 | bfd_boolean lit_reused = FALSE; | |
3099 | bfd_boolean all_optimized = TRUE; | |
3100 | unsigned int lit_insn; | |
252b5132 | 3101 | |
a7519a3c RH |
3102 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3103 | if (lit_insn >> 26 != OP_LDQ) | |
3104 | { | |
3105 | ((*_bfd_error_handler) | |
3106 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3107 | info->abfd, info->sec, | |
3108 | (unsigned long) irel->r_offset)); | |
3109 | return TRUE; | |
3110 | } | |
252b5132 | 3111 | |
a7519a3c RH |
3112 | /* Can't relax dynamic symbols. */ |
3113 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3114 | return TRUE; | |
3115 | ||
3116 | /* Summarize how this particular LITERAL is used. */ | |
3117 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3118 | { |
a7519a3c RH |
3119 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3120 | break; | |
3121 | if (urel->r_addend <= 3) | |
3122 | flags |= 1 << urel->r_addend; | |
3123 | } | |
252b5132 | 3124 | |
a7519a3c RH |
3125 | /* A little preparation for the loop... */ |
3126 | disp = symval - info->gp; | |
252b5132 | 3127 | |
a7519a3c RH |
3128 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3129 | { | |
3130 | unsigned int insn; | |
3131 | int insn_disp; | |
3132 | bfd_signed_vma xdisp; | |
252b5132 | 3133 | |
a7519a3c | 3134 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3135 | |
a7519a3c RH |
3136 | switch (urel->r_addend) |
3137 | { | |
3138 | case LITUSE_ALPHA_ADDR: | |
3139 | default: | |
3140 | /* This type is really just a placeholder to note that all | |
3141 | uses cannot be optimized, but to still allow some. */ | |
3142 | all_optimized = FALSE; | |
3143 | break; | |
252b5132 | 3144 | |
a7519a3c RH |
3145 | case LITUSE_ALPHA_BASE: |
3146 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3147 | |
a7519a3c RH |
3148 | /* Extract the displacement from the instruction, sign-extending |
3149 | it if necessary, then test whether it is within 16 or 32 bits | |
3150 | displacement from GP. */ | |
3151 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3152 | ||
3153 | xdisp = disp + insn_disp; | |
3154 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3155 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3156 | && xdisp < 0x7fff8000); | |
3157 | ||
3158 | if (fits16) | |
3159 | { | |
3160 | /* Take the op code and dest from this insn, take the base | |
3161 | register from the literal insn. Leave the offset alone. */ | |
3162 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3163 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3164 | R_ALPHA_GPREL16); | |
3165 | urel->r_addend = irel->r_addend; | |
3166 | info->changed_relocs = TRUE; | |
252b5132 | 3167 | |
a7519a3c RH |
3168 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3169 | info->contents + urel->r_offset); | |
3170 | info->changed_contents = TRUE; | |
252b5132 | 3171 | } |
252b5132 | 3172 | |
a7519a3c RH |
3173 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3174 | else if (fits32 && !(flags & ~6)) | |
3175 | { | |
3176 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3177 | |
a7519a3c RH |
3178 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3179 | R_ALPHA_GPRELHIGH); | |
3180 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3181 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3182 | info->contents + irel->r_offset); | |
3183 | lit_reused = TRUE; | |
3184 | info->changed_contents = TRUE; | |
252b5132 | 3185 | |
a7519a3c RH |
3186 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3187 | R_ALPHA_GPRELLOW); | |
3188 | urel->r_addend = irel->r_addend; | |
3189 | info->changed_relocs = TRUE; | |
3190 | } | |
3191 | else | |
3192 | all_optimized = FALSE; | |
3193 | break; | |
252b5132 | 3194 | |
a7519a3c RH |
3195 | case LITUSE_ALPHA_BYTOFF: |
3196 | /* We can always optimize byte instructions. */ | |
252b5132 | 3197 | |
a7519a3c RH |
3198 | /* FIXME: sanity check the insn for byte op. Check that the |
3199 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3200 | |
a7519a3c RH |
3201 | insn &= ~ (unsigned) 0x001ff000; |
3202 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3203 | |
a7519a3c RH |
3204 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3205 | urel->r_addend = 0; | |
3206 | info->changed_relocs = TRUE; | |
e92d460e | 3207 | |
a7519a3c RH |
3208 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3209 | info->contents + urel->r_offset); | |
3210 | info->changed_contents = TRUE; | |
3211 | break; | |
252b5132 | 3212 | |
a7519a3c RH |
3213 | case LITUSE_ALPHA_JSR: |
3214 | case LITUSE_ALPHA_TLSGD: | |
3215 | case LITUSE_ALPHA_TLSLDM: | |
0d5f9994 | 3216 | { |
a7519a3c RH |
3217 | bfd_vma optdest, org; |
3218 | bfd_signed_vma odisp; | |
252b5132 | 3219 | |
a7519a3c RH |
3220 | /* For undefined weak symbols, we're mostly interested in getting |
3221 | rid of the got entry whenever possible, so optimize this to a | |
3222 | use of the zero register. */ | |
3223 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3224 | { | |
3225 | insn |= 31 << 16; | |
3226 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3227 | info->contents + urel->r_offset); | |
252b5132 | 3228 | |
a7519a3c RH |
3229 | info->changed_contents = TRUE; |
3230 | break; | |
3231 | } | |
252b5132 | 3232 | |
a7519a3c RH |
3233 | /* If not zero, place to jump without needing pv. */ |
3234 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3235 | org = (info->sec->output_section->vma | |
3236 | + info->sec->output_offset | |
3237 | + urel->r_offset + 4); | |
3238 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3239 | |
a7519a3c RH |
3240 | if (odisp >= -0x400000 && odisp < 0x400000) |
3241 | { | |
3242 | Elf_Internal_Rela *xrel; | |
252b5132 | 3243 | |
a7519a3c RH |
3244 | /* Preserve branch prediction call stack when possible. */ |
3245 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3246 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3247 | else | |
3248 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3249 | |
a7519a3c RH |
3250 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3251 | R_ALPHA_BRADDR); | |
3252 | urel->r_addend = irel->r_addend; | |
252b5132 | 3253 | |
a7519a3c RH |
3254 | if (optdest) |
3255 | urel->r_addend += optdest - symval; | |
3256 | else | |
3257 | all_optimized = FALSE; | |
252b5132 | 3258 | |
a7519a3c RH |
3259 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3260 | info->contents + urel->r_offset); | |
252b5132 | 3261 | |
a7519a3c RH |
3262 | /* Kill any HINT reloc that might exist for this insn. */ |
3263 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3264 | (info->relocs, info->relend, urel->r_offset, | |
3265 | R_ALPHA_HINT)); | |
3266 | if (xrel) | |
3267 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3268 | |
a7519a3c RH |
3269 | info->changed_contents = TRUE; |
3270 | info->changed_relocs = TRUE; | |
3271 | } | |
3272 | else | |
3273 | all_optimized = FALSE; | |
252b5132 | 3274 | |
a7519a3c RH |
3275 | /* Even if the target is not in range for a direct branch, |
3276 | if we share a GP, we can eliminate the gp reload. */ | |
3277 | if (optdest) | |
3278 | { | |
3279 | Elf_Internal_Rela *gpdisp | |
3280 | = (elf64_alpha_find_reloc_at_ofs | |
3281 | (info->relocs, irelend, urel->r_offset + 4, | |
3282 | R_ALPHA_GPDISP)); | |
3283 | if (gpdisp) | |
3284 | { | |
3285 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3286 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3287 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3288 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3289 | |
a7519a3c RH |
3290 | /* Verify that the instruction is "ldah $29,0($26)". |
3291 | Consider a function that ends in a noreturn call, | |
3292 | and that the next function begins with an ldgp, | |
3293 | and that by accident there is no padding between. | |
3294 | In that case the insn would use $27 as the base. */ | |
3295 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3296 | { | |
3297 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3298 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3299 | |
a7519a3c RH |
3300 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3301 | info->changed_contents = TRUE; | |
3302 | info->changed_relocs = TRUE; | |
3303 | } | |
3304 | } | |
3305 | } | |
3306 | } | |
3307 | break; | |
252b5132 | 3308 | } |
252b5132 RH |
3309 | } |
3310 | ||
a7519a3c RH |
3311 | /* If all cases were optimized, we can reduce the use count on this |
3312 | got entry by one, possibly eliminating it. */ | |
3313 | if (all_optimized) | |
252b5132 | 3314 | { |
a7519a3c | 3315 | if (--info->gotent->use_count == 0) |
252b5132 | 3316 | { |
a7519a3c RH |
3317 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3318 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3319 | if (!info->h) | |
3320 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3321 | } |
a7519a3c RH |
3322 | |
3323 | /* If the literal instruction is no longer needed (it may have been | |
3324 | reused. We can eliminate it. */ | |
3325 | /* ??? For now, I don't want to deal with compacting the section, | |
3326 | so just nop it out. */ | |
3327 | if (!lit_reused) | |
252b5132 | 3328 | { |
a7519a3c RH |
3329 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3330 | info->changed_relocs = TRUE; | |
252b5132 | 3331 | |
a7519a3c RH |
3332 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3333 | info->contents + irel->r_offset); | |
3334 | info->changed_contents = TRUE; | |
3335 | } | |
252b5132 | 3336 | |
a7519a3c RH |
3337 | return TRUE; |
3338 | } | |
3339 | else | |
3340 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3341 | } |
3342 | ||
b34976b6 | 3343 | static bfd_boolean |
a7519a3c RH |
3344 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3345 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3346 | { |
a7519a3c RH |
3347 | bfd_byte *pos[5]; |
3348 | unsigned int insn; | |
3349 | Elf_Internal_Rela *gpdisp, *hint; | |
3350 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3351 | unsigned long new_symndx; | |
f44f99a5 | 3352 | |
a7519a3c | 3353 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3354 | |
a7519a3c RH |
3355 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3356 | to use dynamic model for it. */ | |
3357 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3358 | ; | |
f44f99a5 | 3359 | |
a7519a3c RH |
3360 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3361 | then we might as well relax to IE. */ | |
3362 | else if (info->link_info->shared && !dynamic | |
3363 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3364 | ; | |
f44f99a5 | 3365 | |
a7519a3c RH |
3366 | /* Otherwise we must be building an executable to do anything. */ |
3367 | else if (info->link_info->shared) | |
3368 | return TRUE; | |
f44f99a5 | 3369 | |
a7519a3c RH |
3370 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3371 | the matching LITUSE_TLS relocations. */ | |
3372 | if (irel + 2 >= info->relend) | |
3373 | return TRUE; | |
3374 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3375 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3376 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3377 | return TRUE; | |
f44f99a5 | 3378 | |
a7519a3c RH |
3379 | /* There must be a GPDISP relocation positioned immediately after the |
3380 | LITUSE relocation. */ | |
3381 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3382 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3383 | if (!gpdisp) | |
b34976b6 | 3384 | return TRUE; |
f44f99a5 | 3385 | |
a7519a3c RH |
3386 | pos[0] = info->contents + irel[0].r_offset; |
3387 | pos[1] = info->contents + irel[1].r_offset; | |
3388 | pos[2] = info->contents + irel[2].r_offset; | |
3389 | pos[3] = info->contents + gpdisp->r_offset; | |
3390 | pos[4] = pos[3] + gpdisp->r_addend; | |
3391 | pos1_unusable = FALSE; | |
f44f99a5 | 3392 | |
a7519a3c RH |
3393 | /* Generally, the positions are not allowed to be out of order, lest the |
3394 | modified insn sequence have different register lifetimes. We can make | |
3395 | an exception when pos 1 is adjacent to pos 0. */ | |
3396 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3397 | { |
a7519a3c RH |
3398 | bfd_byte *tmp = pos[0]; |
3399 | pos[0] = pos[1]; | |
3400 | pos[1] = tmp; | |
f44f99a5 | 3401 | } |
a7519a3c RH |
3402 | else if (pos[1] < pos[0]) |
3403 | pos1_unusable = TRUE; | |
3404 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3405 | return TRUE; | |
cc03ec80 | 3406 | |
a7519a3c RH |
3407 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3408 | smash the symndx when we adjust the relocations below. */ | |
3409 | { | |
3410 | struct alpha_elf_got_entry *lit_gotent; | |
3411 | struct alpha_elf_link_hash_entry *lit_h; | |
3412 | unsigned long indx; | |
f44f99a5 | 3413 | |
a7519a3c RH |
3414 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3415 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3416 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3417 | |
a7519a3c RH |
3418 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3419 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3420 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3421 | |
a7519a3c RH |
3422 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3423 | lit_gotent = lit_gotent->next) | |
3424 | if (lit_gotent->gotobj == info->gotobj | |
3425 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3426 | && lit_gotent->addend == irel[1].r_addend) | |
3427 | break; | |
3428 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3429 | |
a7519a3c RH |
3430 | if (--lit_gotent->use_count == 0) |
3431 | { | |
3432 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3433 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3434 | } | |
3435 | } | |
252b5132 | 3436 | |
a7519a3c | 3437 | /* Change |
252b5132 | 3438 | |
a7519a3c RH |
3439 | lda $16,x($gp) !tlsgd!1 |
3440 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3441 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3442 | ldah $29,0($26) !gpdisp!2 | |
3443 | lda $29,0($29) !gpdisp!2 | |
3444 | to | |
3445 | ldq $16,x($gp) !gottprel | |
3446 | unop | |
3447 | call_pal rduniq | |
3448 | addq $16,$0,$0 | |
3449 | unop | |
3450 | or the first pair to | |
3451 | lda $16,x($gp) !tprel | |
3452 | unop | |
3453 | or | |
3454 | ldah $16,x($gp) !tprelhi | |
3455 | lda $16,x($16) !tprello | |
3456 | ||
3457 | as appropriate. */ | |
3458 | ||
3459 | use_gottprel = FALSE; | |
3460 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3461 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3462 | { |
a7519a3c RH |
3463 | case 1: |
3464 | { | |
3465 | bfd_vma tp_base; | |
3466 | bfd_signed_vma disp; | |
252b5132 | 3467 | |
a7519a3c RH |
3468 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3469 | tp_base = alpha_get_tprel_base (info->link_info); | |
3470 | disp = symval - tp_base; | |
252b5132 | 3471 | |
a7519a3c RH |
3472 | if (disp >= -0x8000 && disp < 0x8000) |
3473 | { | |
3474 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3475 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3476 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3477 | |
a7519a3c RH |
3478 | irel[0].r_offset = pos[0] - info->contents; |
3479 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3480 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3481 | break; | |
3482 | } | |
3483 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3484 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3485 | && !pos1_unusable) | |
3486 | { | |
3487 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3488 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3489 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3490 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3491 | |
a7519a3c RH |
3492 | irel[0].r_offset = pos[0] - info->contents; |
3493 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3494 | irel[1].r_offset = pos[1] - info->contents; | |
3495 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3496 | break; | |
3497 | } | |
3498 | } | |
3499 | /* FALLTHRU */ | |
3765b1be | 3500 | |
3765b1be | 3501 | default: |
a7519a3c RH |
3502 | use_gottprel = TRUE; |
3503 | ||
3504 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3505 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3506 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3507 | ||
3508 | irel[0].r_offset = pos[0] - info->contents; | |
3509 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3510 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3511 | break; | |
3765b1be | 3512 | } |
3765b1be | 3513 | |
a7519a3c | 3514 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3515 | |
a7519a3c RH |
3516 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3517 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3518 | |
a7519a3c | 3519 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3520 | |
a7519a3c RH |
3521 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3522 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3523 | |
a7519a3c RH |
3524 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3525 | irel[2].r_offset, R_ALPHA_HINT); | |
3526 | if (hint) | |
3527 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3528 | |
a7519a3c RH |
3529 | info->changed_contents = TRUE; |
3530 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3531 | |
a7519a3c RH |
3532 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3533 | if (--info->gotent->use_count == 0) | |
3765b1be | 3534 | { |
a7519a3c RH |
3535 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3536 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3537 | if (!info->h) | |
3538 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3539 | } |
252b5132 | 3540 | |
a7519a3c RH |
3541 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3542 | count on that got entry. */ | |
3543 | if (use_gottprel) | |
f44f99a5 | 3544 | { |
a7519a3c | 3545 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3546 | |
a7519a3c RH |
3547 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3548 | tprel_gotent = tprel_gotent->next) | |
3549 | if (tprel_gotent->gotobj == info->gotobj | |
3550 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3551 | && tprel_gotent->addend == irel->r_addend) | |
3552 | break; | |
3553 | if (tprel_gotent) | |
3554 | tprel_gotent->use_count++; | |
3555 | else | |
f44f99a5 | 3556 | { |
a7519a3c RH |
3557 | if (info->gotent->use_count == 0) |
3558 | tprel_gotent = info->gotent; | |
3559 | else | |
3560 | { | |
3561 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3562 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3563 | if (!tprel_gotent) | |
3564 | return FALSE; | |
f44f99a5 | 3565 | |
a7519a3c RH |
3566 | tprel_gotent->next = *info->first_gotent; |
3567 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3568 | |
a7519a3c RH |
3569 | tprel_gotent->gotobj = info->gotobj; |
3570 | tprel_gotent->addend = irel->r_addend; | |
3571 | tprel_gotent->got_offset = -1; | |
3572 | tprel_gotent->reloc_done = 0; | |
3573 | tprel_gotent->reloc_xlated = 0; | |
3574 | } | |
f44f99a5 | 3575 | |
a7519a3c RH |
3576 | tprel_gotent->use_count = 1; |
3577 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3578 | } | |
f44f99a5 | 3579 | } |
f44f99a5 | 3580 | |
b34976b6 | 3581 | return TRUE; |
f44f99a5 RH |
3582 | } |
3583 | ||
b34976b6 | 3584 | static bfd_boolean |
a7519a3c RH |
3585 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3586 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3587 | { |
a7519a3c RH |
3588 | Elf_Internal_Shdr *symtab_hdr; |
3589 | Elf_Internal_Rela *internal_relocs; | |
3590 | Elf_Internal_Rela *irel, *irelend; | |
3591 | Elf_Internal_Sym *isymbuf = NULL; | |
3592 | struct alpha_elf_got_entry **local_got_entries; | |
3593 | struct alpha_relax_info info; | |
f44f99a5 | 3594 | |
a7519a3c RH |
3595 | /* We are not currently changing any sizes, so only one pass. */ |
3596 | *again = FALSE; | |
f44f99a5 | 3597 | |
a7519a3c RH |
3598 | if (link_info->relocatable |
3599 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3600 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3601 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3602 | return TRUE; |
3603 | ||
a7519a3c RH |
3604 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3605 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
252b5132 | 3606 | |
a7519a3c RH |
3607 | /* Load the relocations for this section. */ |
3608 | internal_relocs = (_bfd_elf_link_read_relocs | |
3609 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3610 | link_info->keep_memory)); | |
3611 | if (internal_relocs == NULL) | |
3612 | return FALSE; | |
252b5132 | 3613 | |
a7519a3c RH |
3614 | memset(&info, 0, sizeof (info)); |
3615 | info.abfd = abfd; | |
3616 | info.sec = sec; | |
3617 | info.link_info = link_info; | |
3618 | info.symtab_hdr = symtab_hdr; | |
3619 | info.relocs = internal_relocs; | |
3620 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3621 | ||
3622 | /* Find the GP for this object. Do not store the result back via | |
3623 | _bfd_set_gp_value, since this could change again before final. */ | |
3624 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3625 | if (info.gotobj) | |
3765b1be | 3626 | { |
a7519a3c RH |
3627 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3628 | info.gp = (sgot->output_section->vma | |
3629 | + sgot->output_offset | |
3630 | + 0x8000); | |
252b5132 RH |
3631 | } |
3632 | ||
a7519a3c RH |
3633 | /* Get the section contents. */ |
3634 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3635 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3636 | else | |
3637 | { | |
3638 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3639 | goto error_return; | |
3640 | } | |
252b5132 | 3641 | |
a7519a3c RH |
3642 | for (irel = internal_relocs; irel < irelend; irel++) |
3643 | { | |
3644 | bfd_vma symval; | |
3645 | struct alpha_elf_got_entry *gotent; | |
3646 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3647 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3648 | ||
3649 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3650 | switch (r_type) | |
3651 | { | |
3652 | case R_ALPHA_LITERAL: | |
3653 | case R_ALPHA_GPRELHIGH: | |
3654 | case R_ALPHA_GPRELLOW: | |
3655 | case R_ALPHA_GOTDTPREL: | |
3656 | case R_ALPHA_GOTTPREL: | |
3657 | case R_ALPHA_TLSGD: | |
3658 | break; | |
3659 | ||
3660 | case R_ALPHA_TLSLDM: | |
3661 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3662 | reloc to the 0 symbol so that they all match. */ | |
3663 | r_symndx = 0; | |
3664 | break; | |
3665 | ||
3666 | default: | |
3667 | continue; | |
3668 | } | |
3669 | ||
3670 | /* Get the value of the symbol referred to by the reloc. */ | |
3671 | if (r_symndx < symtab_hdr->sh_info) | |
3672 | { | |
3673 | /* A local symbol. */ | |
3674 | Elf_Internal_Sym *isym; | |
3675 | ||
3676 | /* Read this BFD's local symbols. */ | |
3677 | if (isymbuf == NULL) | |
3678 | { | |
3679 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3680 | if (isymbuf == NULL) | |
3681 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3682 | symtab_hdr->sh_info, 0, | |
3683 | NULL, NULL, NULL); | |
3684 | if (isymbuf == NULL) | |
3685 | goto error_return; | |
3686 | } | |
252b5132 | 3687 | |
a7519a3c | 3688 | isym = isymbuf + r_symndx; |
252b5132 | 3689 | |
a7519a3c RH |
3690 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3691 | means forcing the symbol value to the tp base. */ | |
3692 | if (r_type == R_ALPHA_TLSLDM) | |
3693 | { | |
3694 | info.tsec = bfd_abs_section_ptr; | |
3695 | symval = alpha_get_tprel_base (info.link_info); | |
3696 | } | |
3697 | else | |
3698 | { | |
3699 | symval = isym->st_value; | |
3700 | if (isym->st_shndx == SHN_UNDEF) | |
3701 | continue; | |
3702 | else if (isym->st_shndx == SHN_ABS) | |
3703 | info.tsec = bfd_abs_section_ptr; | |
3704 | else if (isym->st_shndx == SHN_COMMON) | |
3705 | info.tsec = bfd_com_section_ptr; | |
3706 | else | |
3707 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3708 | } | |
252b5132 | 3709 | |
a7519a3c RH |
3710 | info.h = NULL; |
3711 | info.other = isym->st_other; | |
3712 | if (local_got_entries) | |
3713 | info.first_gotent = &local_got_entries[r_symndx]; | |
3714 | else | |
3715 | { | |
3716 | info.first_gotent = &info.gotent; | |
3717 | info.gotent = NULL; | |
3718 | } | |
252b5132 | 3719 | } |
a7519a3c RH |
3720 | else |
3721 | { | |
3722 | unsigned long indx; | |
3723 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3724 | |
a7519a3c RH |
3725 | indx = r_symndx - symtab_hdr->sh_info; |
3726 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3727 | BFD_ASSERT (h != NULL); | |
252b5132 | 3728 | |
a7519a3c RH |
3729 | while (h->root.root.type == bfd_link_hash_indirect |
3730 | || h->root.root.type == bfd_link_hash_warning) | |
3731 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3732 | |
a7519a3c RH |
3733 | /* If the symbol is undefined, we can't do anything with it. */ |
3734 | if (h->root.root.type == bfd_link_hash_undefined) | |
3735 | continue; | |
252b5132 | 3736 | |
a7519a3c RH |
3737 | /* If the symbol isn't defined in the current module, |
3738 | again we can't do anything. */ | |
3739 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3740 | { | |
3741 | info.tsec = bfd_abs_section_ptr; | |
3742 | symval = 0; | |
3743 | } | |
3744 | else if (!h->root.def_regular) | |
3745 | { | |
3746 | /* Except for TLSGD relocs, which can sometimes be | |
3747 | relaxed to GOTTPREL relocs. */ | |
3748 | if (r_type != R_ALPHA_TLSGD) | |
3749 | continue; | |
3750 | info.tsec = bfd_abs_section_ptr; | |
3751 | symval = 0; | |
3752 | } | |
3753 | else | |
3754 | { | |
3755 | info.tsec = h->root.root.u.def.section; | |
3756 | symval = h->root.root.u.def.value; | |
3757 | } | |
252b5132 | 3758 | |
a7519a3c RH |
3759 | info.h = h; |
3760 | info.other = h->root.other; | |
3761 | info.first_gotent = &h->got_entries; | |
3762 | } | |
252b5132 | 3763 | |
a7519a3c RH |
3764 | /* Search for the got entry to be used by this relocation. */ |
3765 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3766 | if (gotent->gotobj == info.gotobj | |
3767 | && gotent->reloc_type == r_type | |
3768 | && gotent->addend == irel->r_addend) | |
3769 | break; | |
3770 | info.gotent = gotent; | |
252b5132 | 3771 | |
a7519a3c RH |
3772 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3773 | symval += irel->r_addend; | |
252b5132 | 3774 | |
a7519a3c | 3775 | switch (r_type) |
252b5132 | 3776 | { |
a7519a3c RH |
3777 | case R_ALPHA_LITERAL: |
3778 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3779 | |
a7519a3c RH |
3780 | /* If there exist LITUSE relocations immediately following, this |
3781 | opens up all sorts of interesting optimizations, because we | |
3782 | now know every location that this address load is used. */ | |
3783 | if (irel+1 < irelend | |
3784 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3785 | { |
a7519a3c RH |
3786 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3787 | goto error_return; | |
252b5132 | 3788 | } |
a7519a3c RH |
3789 | else |
3790 | { | |
3791 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3792 | goto error_return; | |
3793 | } | |
3794 | break; | |
252b5132 | 3795 | |
a7519a3c RH |
3796 | case R_ALPHA_GOTDTPREL: |
3797 | case R_ALPHA_GOTTPREL: | |
3798 | BFD_ASSERT(info.gotent != NULL); | |
3799 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3800 | goto error_return; | |
3801 | break; | |
3802 | ||
3803 | case R_ALPHA_TLSGD: | |
3804 | case R_ALPHA_TLSLDM: | |
3805 | BFD_ASSERT(info.gotent != NULL); | |
3806 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3807 | r_type == R_ALPHA_TLSGD)) | |
3808 | goto error_return; | |
3809 | break; | |
252b5132 RH |
3810 | } |
3811 | } | |
3812 | ||
a7519a3c RH |
3813 | if (!elf64_alpha_size_plt_section (link_info)) |
3814 | return FALSE; | |
3815 | if (!elf64_alpha_size_got_sections (link_info)) | |
3816 | return FALSE; | |
3817 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
3818 | return FALSE; | |
dc810e39 | 3819 | |
a7519a3c RH |
3820 | if (isymbuf != NULL |
3821 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3822 | { | |
3823 | if (!link_info->keep_memory) | |
3824 | free (isymbuf); | |
3825 | else | |
252b5132 | 3826 | { |
a7519a3c RH |
3827 | /* Cache the symbols for elf_link_input_bfd. */ |
3828 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3829 | } |
a7519a3c | 3830 | } |
252b5132 | 3831 | |
a7519a3c RH |
3832 | if (info.contents != NULL |
3833 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3834 | { | |
3835 | if (!info.changed_contents && !link_info->keep_memory) | |
3836 | free (info.contents); | |
3837 | else | |
252b5132 | 3838 | { |
a7519a3c RH |
3839 | /* Cache the section contents for elf_link_input_bfd. */ |
3840 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3841 | } |
a7519a3c | 3842 | } |
252b5132 | 3843 | |
a7519a3c RH |
3844 | if (elf_section_data (sec)->relocs != internal_relocs) |
3845 | { | |
3846 | if (!info.changed_relocs) | |
3847 | free (internal_relocs); | |
3848 | else | |
3849 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3850 | } |
a7519a3c RH |
3851 | |
3852 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3853 | |
b34976b6 | 3854 | return TRUE; |
252b5132 | 3855 | |
a7519a3c RH |
3856 | error_return: |
3857 | if (isymbuf != NULL | |
3858 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3859 | free (isymbuf); | |
3860 | if (info.contents != NULL | |
3861 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3862 | free (info.contents); | |
3863 | if (internal_relocs != NULL | |
3864 | && elf_section_data (sec)->relocs != internal_relocs) | |
3865 | free (internal_relocs); | |
3866 | return FALSE; | |
3867 | } | |
3868 | \f | |
1bbc9cec RH |
3869 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3870 | into the next available slot in SREL. */ | |
3871 | ||
3872 | static void | |
a7519a3c RH |
3873 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3874 | asection *sec, asection *srel, bfd_vma offset, | |
3875 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3876 | { |
3877 | Elf_Internal_Rela outrel; | |
3878 | bfd_byte *loc; | |
3879 | ||
3880 | BFD_ASSERT (srel != NULL); | |
3881 | ||
3882 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3883 | outrel.r_addend = addend; | |
3884 | ||
3885 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3886 | if ((offset | 1) != (bfd_vma) -1) | |
3887 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3888 | else | |
3889 | memset (&outrel, 0, sizeof (outrel)); | |
3890 | ||
3891 | loc = srel->contents; | |
3892 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3893 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3894 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3895 | } |
3896 | ||
4a67a098 RH |
3897 | /* Relocate an Alpha ELF section for a relocatable link. |
3898 | ||
3899 | We don't have to change anything unless the reloc is against a section | |
3900 | symbol, in which case we have to adjust according to where the section | |
3901 | symbol winds up in the output section. */ | |
3902 | ||
b34976b6 | 3903 | static bfd_boolean |
a7519a3c RH |
3904 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3905 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3906 | bfd *input_bfd, asection *input_section, | |
3907 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3908 | Elf_Internal_Rela *relocs, | |
3909 | Elf_Internal_Sym *local_syms, | |
3910 | asection **local_sections) | |
4a67a098 RH |
3911 | { |
3912 | unsigned long symtab_hdr_sh_info; | |
3913 | Elf_Internal_Rela *rel; | |
3914 | Elf_Internal_Rela *relend; | |
b34976b6 | 3915 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
3916 | |
3917 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
3918 | ||
3919 | relend = relocs + input_section->reloc_count; | |
3920 | for (rel = relocs; rel < relend; rel++) | |
3921 | { | |
3922 | unsigned long r_symndx; | |
3923 | Elf_Internal_Sym *sym; | |
3924 | asection *sec; | |
3925 | unsigned long r_type; | |
3926 | ||
3927 | r_type = ELF64_R_TYPE(rel->r_info); | |
3928 | if (r_type >= R_ALPHA_max) | |
3929 | { | |
3930 | (*_bfd_error_handler) | |
d003868e AM |
3931 | (_("%B: unknown relocation type %d"), |
3932 | input_bfd, (int) r_type); | |
4a67a098 | 3933 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3934 | ret_val = FALSE; |
4a67a098 RH |
3935 | continue; |
3936 | } | |
3937 | ||
3938 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3939 | ||
3940 | /* The symbol associated with GPDISP and LITUSE is | |
3941 | immaterial. Only the addend is significant. */ | |
3942 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3943 | continue; | |
3944 | ||
3945 | if (r_symndx < symtab_hdr_sh_info) | |
3946 | { | |
3947 | sym = local_syms + r_symndx; | |
3948 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3949 | { | |
3950 | sec = local_sections[r_symndx]; | |
3951 | rel->r_addend += sec->output_offset + sym->st_value; | |
3952 | } | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | return ret_val; | |
3957 | } | |
3958 | ||
252b5132 RH |
3959 | /* Relocate an Alpha ELF section. */ |
3960 | ||
b34976b6 | 3961 | static bfd_boolean |
a7519a3c RH |
3962 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3963 | bfd *input_bfd, asection *input_section, | |
3964 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
3965 | Elf_Internal_Sym *local_syms, | |
3966 | asection **local_sections) | |
252b5132 | 3967 | { |
4a67a098 | 3968 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
3969 | Elf_Internal_Rela *rel; |
3970 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
3971 | asection *sgot, *srel, *srelgot; |
3972 | bfd *dynobj, *gotobj; | |
3973 | bfd_vma gp, tp_base, dtp_base; | |
3974 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 3975 | bfd_boolean ret_val; |
252b5132 | 3976 | |
4a67a098 | 3977 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 3978 | if (info->relocatable) |
4a67a098 RH |
3979 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
3980 | input_section, contents, relocs, | |
3981 | local_syms, local_sections); | |
3982 | ||
3983 | /* This is a final link. */ | |
3984 | ||
b34976b6 | 3985 | ret_val = TRUE; |
252b5132 | 3986 | |
4a67a098 | 3987 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 3988 | |
4a67a098 RH |
3989 | dynobj = elf_hash_table (info)->dynobj; |
3990 | if (dynobj) | |
3991 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3992 | else | |
3993 | srelgot = NULL; | |
3994 | ||
3241278a RH |
3995 | if (input_section->flags & SEC_ALLOC) |
3996 | { | |
3997 | const char *section_name; | |
3998 | section_name = (bfd_elf_string_from_elf_section | |
3999 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4000 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4001 | BFD_ASSERT(section_name != NULL); | |
4002 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4003 | } | |
4004 | else | |
4005 | srel = NULL; | |
3765b1be | 4006 | |
4a67a098 RH |
4007 | /* Find the gp value for this input bfd. */ |
4008 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4009 | if (gotobj) | |
4010 | { | |
4011 | sgot = alpha_elf_tdata (gotobj)->got; | |
4012 | gp = _bfd_get_gp_value (gotobj); | |
4013 | if (gp == 0) | |
252b5132 | 4014 | { |
4a67a098 RH |
4015 | gp = (sgot->output_section->vma |
4016 | + sgot->output_offset | |
4017 | + 0x8000); | |
4018 | _bfd_set_gp_value (gotobj, gp); | |
4019 | } | |
4020 | } | |
4021 | else | |
4022 | { | |
4023 | sgot = NULL; | |
4024 | gp = 0; | |
4025 | } | |
3765b1be | 4026 | |
4a67a098 RH |
4027 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4028 | ||
e1918d23 | 4029 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4030 | { |
e1918d23 AM |
4031 | dtp_base = alpha_get_dtprel_base (info); |
4032 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4033 | } |
4a67a098 RH |
4034 | else |
4035 | dtp_base = tp_base = 0; | |
252b5132 | 4036 | |
252b5132 | 4037 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4038 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4039 | { |
4a67a098 | 4040 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4041 | struct alpha_elf_got_entry *gotent; |
4042 | bfd_reloc_status_type r; | |
252b5132 RH |
4043 | reloc_howto_type *howto; |
4044 | unsigned long r_symndx; | |
4a67a098 RH |
4045 | Elf_Internal_Sym *sym = NULL; |
4046 | asection *sec = NULL; | |
3765b1be | 4047 | bfd_vma value; |
dc810e39 | 4048 | bfd_vma addend; |
b34976b6 AM |
4049 | bfd_boolean dynamic_symbol_p; |
4050 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4051 | unsigned long r_type; |
252b5132 RH |
4052 | |
4053 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4054 | if (r_type >= R_ALPHA_max) |
252b5132 | 4055 | { |
3765b1be | 4056 | (*_bfd_error_handler) |
d003868e AM |
4057 | (_("%B: unknown relocation type %d"), |
4058 | input_bfd, (int) r_type); | |
252b5132 | 4059 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4060 | ret_val = FALSE; |
3765b1be | 4061 | continue; |
252b5132 | 4062 | } |
252b5132 | 4063 | |
3765b1be | 4064 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4065 | r_symndx = ELF64_R_SYM(rel->r_info); |
4066 | ||
cc03ec80 RH |
4067 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4068 | reloc to the 0 symbol so that they all match. */ | |
4069 | if (r_type == R_ALPHA_TLSLDM) | |
4070 | r_symndx = 0; | |
4071 | ||
252b5132 RH |
4072 | if (r_symndx < symtab_hdr->sh_info) |
4073 | { | |
8517fae7 | 4074 | asection *msec; |
252b5132 RH |
4075 | sym = local_syms + r_symndx; |
4076 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4077 | msec = sec; |
4078 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4079 | |
cc03ec80 RH |
4080 | /* If this is a tp-relative relocation against sym 0, |
4081 | this is hackery from relax_section. Force the value to | |
4082 | be the tls base. */ | |
4083 | if (r_symndx == 0 | |
4084 | && (r_type == R_ALPHA_TLSLDM | |
4085 | || r_type == R_ALPHA_GOTTPREL | |
4086 | || r_type == R_ALPHA_TPREL64 | |
4087 | || r_type == R_ALPHA_TPRELHI | |
4088 | || r_type == R_ALPHA_TPRELLO | |
4089 | || r_type == R_ALPHA_TPREL16)) | |
4090 | value = tp_base; | |
4091 | ||
4a67a098 RH |
4092 | if (local_got_entries) |
4093 | gotent = local_got_entries[r_symndx]; | |
4094 | else | |
4095 | gotent = NULL; | |
3765b1be RH |
4096 | |
4097 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4098 | unless it has been done already. */ | |
4099 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4100 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4101 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4102 | && gotent |
4103 | && !gotent->reloc_xlated) | |
3765b1be RH |
4104 | { |
4105 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4106 | |
4107 | for (ent = gotent; ent; ent = ent->next) | |
4108 | { | |
4109 | ent->reloc_xlated = 1; | |
4110 | if (ent->use_count == 0) | |
4111 | continue; | |
4112 | msec = sec; | |
4113 | ent->addend = | |
4114 | _bfd_merged_section_offset (output_bfd, &msec, | |
4115 | elf_section_data (sec)-> | |
4116 | sec_info, | |
753731ee | 4117 | sym->st_value + ent->addend); |
3765b1be RH |
4118 | ent->addend -= sym->st_value; |
4119 | ent->addend += msec->output_section->vma | |
4120 | + msec->output_offset | |
4121 | - sec->output_section->vma | |
4122 | - sec->output_offset; | |
4123 | } | |
4124 | } | |
4125 | ||
b34976b6 | 4126 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4127 | } |
4128 | else | |
4129 | { | |
560e09e9 NC |
4130 | bfd_boolean warned; |
4131 | bfd_boolean unresolved_reloc; | |
4132 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4133 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4134 | ||
4135 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4136 | r_symndx, symtab_hdr, sym_hashes, | |
4137 | hh, sec, value, | |
4138 | unresolved_reloc, warned); | |
560e09e9 NC |
4139 | |
4140 | if (warned) | |
4141 | continue; | |
252b5132 | 4142 | |
560e09e9 NC |
4143 | if (value == 0 |
4144 | && ! unresolved_reloc | |
4145 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4146 | undef_weak_ref = TRUE; |
3765b1be | 4147 | |
560e09e9 | 4148 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4149 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4150 | gotent = h->got_entries; | |
252b5132 | 4151 | } |
3765b1be | 4152 | |
252b5132 | 4153 | addend = rel->r_addend; |
3765b1be RH |
4154 | value += addend; |
4155 | ||
4156 | /* Search for the proper got entry. */ | |
4157 | for (; gotent ; gotent = gotent->next) | |
4158 | if (gotent->gotobj == gotobj | |
4159 | && gotent->reloc_type == r_type | |
4160 | && gotent->addend == addend) | |
4161 | break; | |
252b5132 RH |
4162 | |
4163 | switch (r_type) | |
4164 | { | |
4165 | case R_ALPHA_GPDISP: | |
4166 | { | |
4167 | bfd_byte *p_ldah, *p_lda; | |
4168 | ||
4169 | BFD_ASSERT(gp != 0); | |
4170 | ||
3765b1be RH |
4171 | value = (input_section->output_section->vma |
4172 | + input_section->output_offset | |
4173 | + rel->r_offset); | |
252b5132 | 4174 | |
3765b1be | 4175 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4176 | p_lda = p_ldah + rel->r_addend; |
4177 | ||
3765b1be | 4178 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4179 | p_ldah, p_lda); |
4180 | } | |
4181 | break; | |
4182 | ||
252b5132 | 4183 | case R_ALPHA_LITERAL: |
3765b1be RH |
4184 | BFD_ASSERT(sgot != NULL); |
4185 | BFD_ASSERT(gp != 0); | |
4186 | BFD_ASSERT(gotent != NULL); | |
4187 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4188 | |
3765b1be RH |
4189 | if (!gotent->reloc_done) |
4190 | { | |
4191 | gotent->reloc_done = 1; | |
252b5132 | 4192 | |
3765b1be RH |
4193 | bfd_put_64 (output_bfd, value, |
4194 | sgot->contents + gotent->got_offset); | |
252b5132 | 4195 | |
3765b1be RH |
4196 | /* If the symbol has been forced local, output a |
4197 | RELATIVE reloc, otherwise it will be handled in | |
4198 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4199 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4200 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4201 | gotent->got_offset, 0, | |
4202 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4203 | } |
252b5132 | 4204 | |
3765b1be RH |
4205 | value = (sgot->output_section->vma |
4206 | + sgot->output_offset | |
4207 | + gotent->got_offset); | |
4208 | value -= gp; | |
252b5132 RH |
4209 | goto default_reloc; |
4210 | ||
4211 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4212 | /* If the target section was a removed linkonce section, |
4213 | r_symndx will be zero. In this case, assume that the | |
4214 | switch will not be used, so don't fill it in. If we | |
4215 | do nothing here, we'll get relocation truncated messages, | |
4216 | due to the placement of the application above 4GB. */ | |
4217 | if (r_symndx == 0) | |
4218 | { | |
4219 | r = bfd_reloc_ok; | |
4220 | break; | |
4221 | } | |
4222 | /* FALLTHRU */ | |
4223 | ||
4224 | case R_ALPHA_GPREL16: | |
252b5132 | 4225 | case R_ALPHA_GPRELLOW: |
3765b1be | 4226 | if (dynamic_symbol_p) |
f16fbd61 RH |
4227 | { |
4228 | (*_bfd_error_handler) | |
d003868e AM |
4229 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4230 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4231 | ret_val = FALSE; |
f16fbd61 | 4232 | } |
252b5132 | 4233 | BFD_ASSERT(gp != 0); |
3765b1be | 4234 | value -= gp; |
252b5132 RH |
4235 | goto default_reloc; |
4236 | ||
4237 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4238 | if (dynamic_symbol_p) |
f16fbd61 RH |
4239 | { |
4240 | (*_bfd_error_handler) | |
d003868e AM |
4241 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4242 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4243 | ret_val = FALSE; |
f16fbd61 | 4244 | } |
252b5132 | 4245 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4246 | value -= gp; |
4247 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4248 | goto default_reloc; |
4249 | ||
252b5132 | 4250 | case R_ALPHA_HINT: |
f94952df RH |
4251 | /* A call to a dynamic symbol is definitely out of range of |
4252 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4253 | if (dynamic_symbol_p) |
f94952df RH |
4254 | { |
4255 | r = bfd_reloc_ok; | |
4256 | break; | |
4257 | } | |
3765b1be RH |
4258 | /* The regular PC-relative stuff measures from the start of |
4259 | the instruction rather than the end. */ | |
4260 | value -= 4; | |
4261 | goto default_reloc; | |
f94952df RH |
4262 | |
4263 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4264 | if (dynamic_symbol_p) |
4265 | { | |
4266 | (*_bfd_error_handler) | |
d003868e AM |
4267 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4268 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4269 | ret_val = FALSE; |
3765b1be | 4270 | } |
252b5132 RH |
4271 | /* The regular PC-relative stuff measures from the start of |
4272 | the instruction rather than the end. */ | |
3765b1be | 4273 | value -= 4; |
252b5132 RH |
4274 | goto default_reloc; |
4275 | ||
7793f4d0 RH |
4276 | case R_ALPHA_BRSGP: |
4277 | { | |
4278 | int other; | |
4279 | const char *name; | |
4280 | ||
4281 | /* The regular PC-relative stuff measures from the start of | |
4282 | the instruction rather than the end. */ | |
3765b1be | 4283 | value -= 4; |
7793f4d0 | 4284 | |
ccf00ab6 RH |
4285 | /* The source and destination gp must be the same. Note that |
4286 | the source will always have an assigned gp, since we forced | |
4287 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4288 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4289 | care not to crash if H is an undefined symbol. */ |
4290 | if (h != NULL && sec != NULL | |
4291 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4292 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4293 | { | |
7793f4d0 | 4294 | (*_bfd_error_handler) |
d003868e AM |
4295 | (_("%B: change in gp: BRSGP %s"), |
4296 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4297 | ret_val = FALSE; |
7793f4d0 RH |
4298 | } |
4299 | ||
4300 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4301 | if (h != NULL) | |
4302 | other = h->root.other; | |
4303 | else | |
4304 | other = sym->st_other; | |
4305 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4306 | { | |
4307 | case STO_ALPHA_NOPV: | |
4308 | break; | |
4309 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4310 | value += 8; |
7793f4d0 RH |
4311 | break; |
4312 | default: | |
4313 | if (h != NULL) | |
4314 | name = h->root.root.root.string; | |
4315 | else | |
4316 | { | |
4317 | name = (bfd_elf_string_from_elf_section | |
4318 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4319 | if (name == NULL) | |
4320 | name = _("<unknown>"); | |
4321 | else if (name[0] == 0) | |
4322 | name = bfd_section_name (input_bfd, sec); | |
4323 | } | |
4324 | (*_bfd_error_handler) | |
d003868e AM |
4325 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4326 | input_bfd, name); | |
b34976b6 | 4327 | ret_val = FALSE; |
7793f4d0 RH |
4328 | break; |
4329 | } | |
4330 | ||
4331 | goto default_reloc; | |
4332 | } | |
4333 | ||
252b5132 RH |
4334 | case R_ALPHA_REFLONG: |
4335 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4336 | case R_ALPHA_DTPREL64: |
4337 | case R_ALPHA_TPREL64: | |
252b5132 | 4338 | { |
1bbc9cec RH |
4339 | long dynindx, dyntype = r_type; |
4340 | bfd_vma dynaddend; | |
252b5132 RH |
4341 | |
4342 | /* Careful here to remember RELATIVE relocations for global | |
4343 | variables for symbolic shared objects. */ | |
4344 | ||
3765b1be | 4345 | if (dynamic_symbol_p) |
252b5132 RH |
4346 | { |
4347 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4348 | dynindx = h->root.dynindx; |
4349 | dynaddend = addend; | |
3765b1be RH |
4350 | addend = 0, value = 0; |
4351 | } | |
4352 | else if (r_type == R_ALPHA_DTPREL64) | |
4353 | { | |
e1918d23 | 4354 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4355 | value -= dtp_base; |
4356 | goto default_reloc; | |
4357 | } | |
4358 | else if (r_type == R_ALPHA_TPREL64) | |
4359 | { | |
e1918d23 | 4360 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4361 | if (!info->shared) |
4362 | { | |
4363 | value -= tp_base; | |
4364 | goto default_reloc; | |
4365 | } | |
4366 | dynindx = 0; | |
4367 | dynaddend = value - dtp_base; | |
252b5132 | 4368 | } |
ec338859 AM |
4369 | else if (info->shared |
4370 | && r_symndx != 0 | |
d6ad34f6 RH |
4371 | && (input_section->flags & SEC_ALLOC) |
4372 | && !undef_weak_ref) | |
252b5132 | 4373 | { |
3765b1be RH |
4374 | if (r_type == R_ALPHA_REFLONG) |
4375 | { | |
4376 | (*_bfd_error_handler) | |
d003868e AM |
4377 | (_("%B: unhandled dynamic relocation against %s"), |
4378 | input_bfd, | |
3765b1be | 4379 | h->root.root.root.string); |
b34976b6 | 4380 | ret_val = FALSE; |
3765b1be | 4381 | } |
1bbc9cec RH |
4382 | dynindx = 0; |
4383 | dyntype = R_ALPHA_RELATIVE; | |
4384 | dynaddend = value; | |
252b5132 RH |
4385 | } |
4386 | else | |
4387 | goto default_reloc; | |
4388 | ||
3241278a RH |
4389 | if (input_section->flags & SEC_ALLOC) |
4390 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4391 | srel, rel->r_offset, dynindx, | |
4392 | dyntype, dynaddend); | |
252b5132 RH |
4393 | } |
4394 | goto default_reloc; | |
4395 | ||
3765b1be | 4396 | case R_ALPHA_SREL16: |
84de6048 RH |
4397 | case R_ALPHA_SREL32: |
4398 | case R_ALPHA_SREL64: | |
3765b1be RH |
4399 | if (dynamic_symbol_p) |
4400 | { | |
4401 | (*_bfd_error_handler) | |
d003868e AM |
4402 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4403 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4404 | ret_val = FALSE; |
3765b1be | 4405 | } |
d6ad34f6 RH |
4406 | else if ((info->shared || info->pie) && undef_weak_ref) |
4407 | { | |
4408 | (*_bfd_error_handler) | |
4409 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4410 | input_bfd, h->root.root.root.string); | |
4411 | ret_val = FALSE; | |
4412 | } | |
4413 | ||
3765b1be | 4414 | |
84de6048 RH |
4415 | /* ??? .eh_frame references to discarded sections will be smashed |
4416 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4417 | NULL to be encoded as 0 in any format, so this works here. */ | |
4418 | if (r_symndx == 0) | |
4419 | howto = (elf64_alpha_howto_table | |
4420 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4421 | goto default_reloc; | |
4422 | ||
3765b1be RH |
4423 | case R_ALPHA_TLSLDM: |
4424 | /* Ignore the symbol for the relocation. The result is always | |
4425 | the current module. */ | |
4426 | dynamic_symbol_p = 0; | |
4427 | /* FALLTHRU */ | |
4428 | ||
4429 | case R_ALPHA_TLSGD: | |
4430 | if (!gotent->reloc_done) | |
4431 | { | |
4432 | gotent->reloc_done = 1; | |
4433 | ||
4434 | /* Note that the module index for the main program is 1. */ | |
4435 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4436 | sgot->contents + gotent->got_offset); | |
4437 | ||
4438 | /* If the symbol has been forced local, output a | |
4439 | DTPMOD64 reloc, otherwise it will be handled in | |
4440 | finish_dynamic_symbol. */ | |
4441 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4442 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4443 | gotent->got_offset, 0, | |
4444 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4445 | |
4446 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4447 | value = 0; | |
4448 | else | |
4449 | { | |
e1918d23 | 4450 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4451 | value -= dtp_base; |
4452 | } | |
4453 | bfd_put_64 (output_bfd, value, | |
4454 | sgot->contents + gotent->got_offset + 8); | |
4455 | } | |
4456 | ||
4457 | value = (sgot->output_section->vma | |
4458 | + sgot->output_offset | |
4459 | + gotent->got_offset); | |
4460 | value -= gp; | |
4461 | goto default_reloc; | |
4462 | ||
4463 | case R_ALPHA_DTPRELHI: | |
4464 | case R_ALPHA_DTPRELLO: | |
4465 | case R_ALPHA_DTPREL16: | |
4466 | if (dynamic_symbol_p) | |
4467 | { | |
4468 | (*_bfd_error_handler) | |
d003868e AM |
4469 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4470 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4471 | ret_val = FALSE; |
3765b1be | 4472 | } |
e1918d23 | 4473 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4474 | value -= dtp_base; |
9e756d64 RH |
4475 | if (r_type == R_ALPHA_DTPRELHI) |
4476 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4477 | goto default_reloc; |
4478 | ||
4479 | case R_ALPHA_TPRELHI: | |
4480 | case R_ALPHA_TPRELLO: | |
4481 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4482 | if (info->shared) |
4483 | { | |
4484 | (*_bfd_error_handler) | |
d003868e AM |
4485 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4486 | input_bfd); | |
b34976b6 | 4487 | ret_val = FALSE; |
9e756d64 RH |
4488 | } |
4489 | else if (dynamic_symbol_p) | |
3765b1be RH |
4490 | { |
4491 | (*_bfd_error_handler) | |
d003868e AM |
4492 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4493 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4494 | ret_val = FALSE; |
3765b1be | 4495 | } |
e1918d23 | 4496 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4497 | value -= tp_base; |
9e756d64 RH |
4498 | if (r_type == R_ALPHA_TPRELHI) |
4499 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4500 | goto default_reloc; |
4501 | ||
4502 | case R_ALPHA_GOTDTPREL: | |
4503 | case R_ALPHA_GOTTPREL: | |
4504 | BFD_ASSERT(sgot != NULL); | |
4505 | BFD_ASSERT(gp != 0); | |
4506 | BFD_ASSERT(gotent != NULL); | |
4507 | BFD_ASSERT(gotent->use_count >= 1); | |
4508 | ||
4509 | if (!gotent->reloc_done) | |
4510 | { | |
4511 | gotent->reloc_done = 1; | |
4512 | ||
4513 | if (dynamic_symbol_p) | |
4514 | value = 0; | |
4515 | else | |
4516 | { | |
e1918d23 | 4517 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4518 | if (r_type == R_ALPHA_GOTDTPREL) |
4519 | value -= dtp_base; | |
4520 | else if (!info->shared) | |
4521 | value -= tp_base; | |
4522 | else | |
4523 | { | |
4524 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4525 | gotent->got_offset, 0, | |
4526 | R_ALPHA_TPREL64, | |
4527 | value - dtp_base); | |
4528 | value = 0; | |
4529 | } | |
3765b1be RH |
4530 | } |
4531 | bfd_put_64 (output_bfd, value, | |
4532 | sgot->contents + gotent->got_offset); | |
4533 | } | |
4534 | ||
4535 | value = (sgot->output_section->vma | |
4536 | + sgot->output_offset | |
4537 | + gotent->got_offset); | |
4538 | value -= gp; | |
4539 | goto default_reloc; | |
4540 | ||
252b5132 RH |
4541 | default: |
4542 | default_reloc: | |
4543 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4544 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4545 | break; |
4546 | } | |
4547 | ||
4548 | switch (r) | |
4549 | { | |
4550 | case bfd_reloc_ok: | |
4551 | break; | |
4552 | ||
4553 | case bfd_reloc_overflow: | |
4554 | { | |
4555 | const char *name; | |
4556 | ||
ed4de5e2 JJ |
4557 | /* Don't warn if the overflow is due to pc relative reloc |
4558 | against discarded section. Section optimization code should | |
4559 | handle it. */ | |
4560 | ||
4561 | if (r_symndx < symtab_hdr->sh_info | |
4562 | && sec != NULL && howto->pc_relative | |
4563 | && elf_discarded_section (sec)) | |
4564 | break; | |
4565 | ||
252b5132 | 4566 | if (h != NULL) |
dfeffb9f | 4567 | name = NULL; |
252b5132 RH |
4568 | else |
4569 | { | |
4570 | name = (bfd_elf_string_from_elf_section | |
4571 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4572 | if (name == NULL) | |
b34976b6 | 4573 | return FALSE; |
252b5132 RH |
4574 | if (*name == '\0') |
4575 | name = bfd_section_name (input_bfd, sec); | |
4576 | } | |
4577 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4578 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4579 | (bfd_vma) 0, input_bfd, input_section, | |
4580 | rel->r_offset))) | |
b34976b6 | 4581 | ret_val = FALSE; |
252b5132 RH |
4582 | } |
4583 | break; | |
4584 | ||
4585 | default: | |
4586 | case bfd_reloc_outofrange: | |
4587 | abort (); | |
4588 | } | |
4589 | } | |
4590 | ||
f16fbd61 | 4591 | return ret_val; |
252b5132 RH |
4592 | } |
4593 | ||
4594 | /* Finish up dynamic symbol handling. We set the contents of various | |
4595 | dynamic sections here. */ | |
4596 | ||
b34976b6 | 4597 | static bfd_boolean |
a7519a3c RH |
4598 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4599 | struct elf_link_hash_entry *h, | |
4600 | Elf_Internal_Sym *sym) | |
252b5132 RH |
4601 | { |
4602 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4603 | ||
4604 | if (h->plt.offset != MINUS_ONE) | |
4605 | { | |
4606 | /* Fill in the .plt entry for this symbol. */ | |
4607 | asection *splt, *sgot, *srel; | |
4608 | Elf_Internal_Rela outrel; | |
947216bf | 4609 | bfd_byte *loc; |
252b5132 RH |
4610 | bfd_vma got_addr, plt_addr; |
4611 | bfd_vma plt_index; | |
4612 | struct alpha_elf_got_entry *gotent; | |
4613 | ||
4614 | BFD_ASSERT (h->dynindx != -1); | |
4615 | ||
4616 | /* The first .got entry will be updated by the .plt with the | |
4617 | address of the target function. */ | |
4618 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
4619 | BFD_ASSERT (gotent && gotent->addend == 0); | |
4620 | ||
4621 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4622 | BFD_ASSERT (splt != NULL); | |
4623 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4624 | BFD_ASSERT (srel != NULL); | |
4625 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
4626 | BFD_ASSERT (sgot != NULL); | |
4627 | ||
4628 | got_addr = (sgot->output_section->vma | |
4629 | + sgot->output_offset | |
4630 | + gotent->got_offset); | |
4631 | plt_addr = (splt->output_section->vma | |
4632 | + splt->output_offset | |
4633 | + h->plt.offset); | |
4634 | ||
4635 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
4636 | ||
4637 | /* Fill in the entry in the procedure linkage table. */ | |
4638 | { | |
dc810e39 | 4639 | bfd_vma insn1, insn2, insn3; |
252b5132 RH |
4640 | |
4641 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
4642 | insn2 = PLT_ENTRY_WORD2; | |
4643 | insn3 = PLT_ENTRY_WORD3; | |
4644 | ||
4645 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
4646 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
4647 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
4648 | } | |
4649 | ||
4650 | /* Fill in the entry in the .rela.plt section. */ | |
4651 | outrel.r_offset = got_addr; | |
4652 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4653 | outrel.r_addend = 0; | |
4654 | ||
947216bf AM |
4655 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4656 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4657 | |
f5385ebf | 4658 | if (!h->def_regular) |
252b5132 RH |
4659 | { |
4660 | /* Mark the symbol as undefined, rather than as defined in the | |
4661 | .plt section. Leave the value alone. */ | |
4662 | sym->st_shndx = SHN_UNDEF; | |
4663 | } | |
4664 | ||
4665 | /* Fill in the entries in the .got. */ | |
4666 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
4667 | ||
4668 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
4669 | if (gotent->next) | |
4670 | { | |
4671 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4672 | BFD_ASSERT (! info->shared || srel != NULL); | |
4673 | ||
4674 | gotent = gotent->next; | |
4675 | do | |
4676 | { | |
4677 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
4678 | BFD_ASSERT(sgot != NULL); | |
4679 | BFD_ASSERT(gotent->addend == 0); | |
4680 | ||
4681 | bfd_put_64 (output_bfd, plt_addr, | |
4682 | sgot->contents + gotent->got_offset); | |
4683 | ||
4684 | if (info->shared) | |
1bbc9cec RH |
4685 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4686 | gotent->got_offset, 0, | |
4687 | R_ALPHA_RELATIVE, plt_addr); | |
252b5132 RH |
4688 | |
4689 | gotent = gotent->next; | |
4690 | } | |
4691 | while (gotent != NULL); | |
4692 | } | |
4693 | } | |
4694 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4695 | { | |
4696 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4697 | asection *srel; | |
252b5132 RH |
4698 | struct alpha_elf_got_entry *gotent; |
4699 | ||
4700 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4701 | BFD_ASSERT (srel != NULL); | |
4702 | ||
252b5132 RH |
4703 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4704 | gotent != NULL; | |
4705 | gotent = gotent->next) | |
4706 | { | |
f44f99a5 | 4707 | asection *sgot; |
1bbc9cec | 4708 | long r_type; |
3765b1be | 4709 | |
f44f99a5 RH |
4710 | if (gotent->use_count == 0) |
4711 | continue; | |
4712 | ||
4713 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4714 | |
4715 | r_type = gotent->reloc_type; | |
4716 | switch (r_type) | |
4717 | { | |
4718 | case R_ALPHA_LITERAL: | |
4719 | r_type = R_ALPHA_GLOB_DAT; | |
4720 | break; | |
4721 | case R_ALPHA_TLSGD: | |
4722 | r_type = R_ALPHA_DTPMOD64; | |
4723 | break; | |
4724 | case R_ALPHA_GOTDTPREL: | |
4725 | r_type = R_ALPHA_DTPREL64; | |
4726 | break; | |
4727 | case R_ALPHA_GOTTPREL: | |
4728 | r_type = R_ALPHA_TPREL64; | |
4729 | break; | |
4730 | case R_ALPHA_TLSLDM: | |
4731 | default: | |
4732 | abort (); | |
4733 | } | |
4734 | ||
1bbc9cec RH |
4735 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4736 | gotent->got_offset, h->dynindx, | |
4737 | r_type, gotent->addend); | |
3765b1be RH |
4738 | |
4739 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4740 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4741 | gotent->got_offset + 8, h->dynindx, | |
4742 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4743 | } |
4744 | } | |
4745 | ||
4746 | /* Mark some specially defined symbols as absolute. */ | |
4747 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4748 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4749 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4750 | sym->st_shndx = SHN_ABS; | |
4751 | ||
b34976b6 | 4752 | return TRUE; |
252b5132 RH |
4753 | } |
4754 | ||
4755 | /* Finish up the dynamic sections. */ | |
4756 | ||
b34976b6 | 4757 | static bfd_boolean |
a7519a3c RH |
4758 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4759 | struct bfd_link_info *info) | |
252b5132 RH |
4760 | { |
4761 | bfd *dynobj; | |
4762 | asection *sdyn; | |
4763 | ||
4764 | dynobj = elf_hash_table (info)->dynobj; | |
4765 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4766 | ||
4767 | if (elf_hash_table (info)->dynamic_sections_created) | |
4768 | { | |
4769 | asection *splt; | |
4770 | Elf64_External_Dyn *dyncon, *dynconend; | |
4771 | ||
4772 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4773 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
4774 | ||
4775 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 4776 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4777 | for (; dyncon < dynconend; dyncon++) |
4778 | { | |
4779 | Elf_Internal_Dyn dyn; | |
4780 | const char *name; | |
4781 | asection *s; | |
4782 | ||
4783 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4784 | ||
4785 | switch (dyn.d_tag) | |
4786 | { | |
4787 | case DT_PLTGOT: | |
4788 | name = ".plt"; | |
4789 | goto get_vma; | |
4790 | case DT_PLTRELSZ: | |
4791 | name = ".rela.plt"; | |
4792 | goto get_size; | |
4793 | case DT_JMPREL: | |
4794 | name = ".rela.plt"; | |
4795 | goto get_vma; | |
4796 | ||
4797 | case DT_RELASZ: | |
4798 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4799 | that RELASZ should not include JMPREL. This is not what | |
4800 | the rest of the BFD does. It is, however, what the | |
4801 | glibc ld.so wants. Do this fixup here until we found | |
4802 | out who is right. */ | |
4803 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4804 | if (s) | |
eea6121a | 4805 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
4806 | break; |
4807 | ||
4808 | get_vma: | |
4809 | s = bfd_get_section_by_name (output_bfd, name); | |
4810 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
4811 | break; | |
4812 | ||
4813 | get_size: | |
4814 | s = bfd_get_section_by_name (output_bfd, name); | |
eea6121a | 4815 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4816 | break; |
4817 | } | |
4818 | ||
4819 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4820 | } | |
4821 | ||
ae9a127f | 4822 | /* Initialize the PLT0 entry. */ |
eea6121a | 4823 | if (splt->size > 0) |
252b5132 RH |
4824 | { |
4825 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
4826 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
4827 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
4828 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
4829 | ||
4830 | /* The next two words will be filled in by ld.so */ | |
dc810e39 AM |
4831 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16); |
4832 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24); | |
252b5132 | 4833 | |
eecdbe52 | 4834 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4835 | } |
4836 | } | |
4837 | ||
b34976b6 | 4838 | return TRUE; |
252b5132 RH |
4839 | } |
4840 | ||
96e2734b RH |
4841 | /* We need to use a special link routine to handle the .mdebug section. |
4842 | We need to merge all instances of these sections together, not write | |
4843 | them all out sequentially. */ | |
252b5132 | 4844 | |
b34976b6 | 4845 | static bfd_boolean |
a7519a3c | 4846 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4847 | { |
4848 | asection *o; | |
4849 | struct bfd_link_order *p; | |
96e2734b | 4850 | asection *mdebug_sec; |
252b5132 RH |
4851 | struct ecoff_debug_info debug; |
4852 | const struct ecoff_debug_swap *swap | |
4853 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4854 | HDRR *symhdr = &debug.symbolic_header; | |
4855 | PTR mdebug_handle = NULL; | |
4856 | ||
96e2734b | 4857 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4858 | mdebug_sec = NULL; |
252b5132 RH |
4859 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4860 | { | |
252b5132 RH |
4861 | if (strcmp (o->name, ".mdebug") == 0) |
4862 | { | |
4863 | struct extsym_info einfo; | |
4864 | ||
4865 | /* We have found the .mdebug section in the output file. | |
4866 | Look through all the link_orders comprising it and merge | |
4867 | the information together. */ | |
4868 | symhdr->magic = swap->sym_magic; | |
4869 | /* FIXME: What should the version stamp be? */ | |
4870 | symhdr->vstamp = 0; | |
4871 | symhdr->ilineMax = 0; | |
4872 | symhdr->cbLine = 0; | |
4873 | symhdr->idnMax = 0; | |
4874 | symhdr->ipdMax = 0; | |
4875 | symhdr->isymMax = 0; | |
4876 | symhdr->ioptMax = 0; | |
4877 | symhdr->iauxMax = 0; | |
4878 | symhdr->issMax = 0; | |
4879 | symhdr->issExtMax = 0; | |
4880 | symhdr->ifdMax = 0; | |
4881 | symhdr->crfd = 0; | |
4882 | symhdr->iextMax = 0; | |
4883 | ||
4884 | /* We accumulate the debugging information itself in the | |
4885 | debug_info structure. */ | |
4886 | debug.line = NULL; | |
4887 | debug.external_dnr = NULL; | |
4888 | debug.external_pdr = NULL; | |
4889 | debug.external_sym = NULL; | |
4890 | debug.external_opt = NULL; | |
4891 | debug.external_aux = NULL; | |
4892 | debug.ss = NULL; | |
4893 | debug.ssext = debug.ssext_end = NULL; | |
4894 | debug.external_fdr = NULL; | |
4895 | debug.external_rfd = NULL; | |
4896 | debug.external_ext = debug.external_ext_end = NULL; | |
4897 | ||
4898 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4899 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4900 | return FALSE; |
252b5132 RH |
4901 | |
4902 | if (1) | |
4903 | { | |
4904 | asection *s; | |
4905 | EXTR esym; | |
52b9d213 | 4906 | bfd_vma last = 0; |
252b5132 RH |
4907 | unsigned int i; |
4908 | static const char * const name[] = | |
4909 | { | |
4910 | ".text", ".init", ".fini", ".data", | |
4911 | ".rodata", ".sdata", ".sbss", ".bss" | |
4912 | }; | |
4913 | static const int sc[] = { scText, scInit, scFini, scData, | |
4914 | scRData, scSData, scSBss, scBss }; | |
4915 | ||
4916 | esym.jmptbl = 0; | |
4917 | esym.cobol_main = 0; | |
4918 | esym.weakext = 0; | |
4919 | esym.reserved = 0; | |
4920 | esym.ifd = ifdNil; | |
4921 | esym.asym.iss = issNil; | |
4922 | esym.asym.st = stLocal; | |
4923 | esym.asym.reserved = 0; | |
4924 | esym.asym.index = indexNil; | |
4925 | for (i = 0; i < 8; i++) | |
4926 | { | |
4927 | esym.asym.sc = sc[i]; | |
4928 | s = bfd_get_section_by_name (abfd, name[i]); | |
4929 | if (s != NULL) | |
4930 | { | |
4931 | esym.asym.value = s->vma; | |
eea6121a | 4932 | last = s->vma + s->size; |
252b5132 RH |
4933 | } |
4934 | else | |
4935 | esym.asym.value = last; | |
4936 | ||
4937 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4938 | name[i], &esym)) | |
b34976b6 | 4939 | return FALSE; |
252b5132 RH |
4940 | } |
4941 | } | |
4942 | ||
8423293d | 4943 | for (p = o->map_head.link_order; |
252b5132 RH |
4944 | p != (struct bfd_link_order *) NULL; |
4945 | p = p->next) | |
4946 | { | |
4947 | asection *input_section; | |
4948 | bfd *input_bfd; | |
4949 | const struct ecoff_debug_swap *input_swap; | |
4950 | struct ecoff_debug_info input_debug; | |
4951 | char *eraw_src; | |
4952 | char *eraw_end; | |
4953 | ||
4954 | if (p->type != bfd_indirect_link_order) | |
4955 | { | |
fd96f80f | 4956 | if (p->type == bfd_data_link_order) |
252b5132 RH |
4957 | continue; |
4958 | abort (); | |
4959 | } | |
4960 | ||
4961 | input_section = p->u.indirect.section; | |
4962 | input_bfd = input_section->owner; | |
4963 | ||
4964 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4965 | || (get_elf_backend_data (input_bfd) | |
4966 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4967 | { | |
4968 | /* I don't know what a non ALPHA ELF bfd would be | |
4969 | doing with a .mdebug section, but I don't really | |
4970 | want to deal with it. */ | |
4971 | continue; | |
4972 | } | |
4973 | ||
4974 | input_swap = (get_elf_backend_data (input_bfd) | |
4975 | ->elf_backend_ecoff_debug_swap); | |
4976 | ||
eea6121a | 4977 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
4978 | |
4979 | /* The ECOFF linking code expects that we have already | |
4980 | read in the debugging information and set up an | |
4981 | ecoff_debug_info structure, so we do that now. */ | |
4982 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
4983 | &input_debug)) | |
b34976b6 | 4984 | return FALSE; |
252b5132 RH |
4985 | |
4986 | if (! (bfd_ecoff_debug_accumulate | |
4987 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
4988 | &input_debug, input_swap, info))) | |
b34976b6 | 4989 | return FALSE; |
252b5132 RH |
4990 | |
4991 | /* Loop through the external symbols. For each one with | |
4992 | interesting information, try to find the symbol in | |
4993 | the linker global hash table and save the information | |
4994 | for the output external symbols. */ | |
4995 | eraw_src = input_debug.external_ext; | |
4996 | eraw_end = (eraw_src | |
4997 | + (input_debug.symbolic_header.iextMax | |
4998 | * input_swap->external_ext_size)); | |
4999 | for (; | |
5000 | eraw_src < eraw_end; | |
5001 | eraw_src += input_swap->external_ext_size) | |
5002 | { | |
5003 | EXTR ext; | |
5004 | const char *name; | |
5005 | struct alpha_elf_link_hash_entry *h; | |
5006 | ||
5007 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5008 | if (ext.asym.sc == scNil | |
5009 | || ext.asym.sc == scUndefined | |
5010 | || ext.asym.sc == scSUndefined) | |
5011 | continue; | |
5012 | ||
5013 | name = input_debug.ssext + ext.asym.iss; | |
5014 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5015 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5016 | if (h == NULL || h->esym.ifd != -2) |
5017 | continue; | |
5018 | ||
5019 | if (ext.ifd != -1) | |
5020 | { | |
5021 | BFD_ASSERT (ext.ifd | |
5022 | < input_debug.symbolic_header.ifdMax); | |
5023 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5024 | } | |
5025 | ||
5026 | h->esym = ext; | |
5027 | } | |
5028 | ||
5029 | /* Free up the information we just read. */ | |
5030 | free (input_debug.line); | |
5031 | free (input_debug.external_dnr); | |
5032 | free (input_debug.external_pdr); | |
5033 | free (input_debug.external_sym); | |
5034 | free (input_debug.external_opt); | |
5035 | free (input_debug.external_aux); | |
5036 | free (input_debug.ss); | |
5037 | free (input_debug.ssext); | |
5038 | free (input_debug.external_fdr); | |
5039 | free (input_debug.external_rfd); | |
5040 | free (input_debug.external_ext); | |
5041 | ||
5042 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5043 | elf_link_input_bfd ignores this section. */ | |
5044 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5045 | } | |
5046 | ||
252b5132 RH |
5047 | /* Build the external symbol information. */ |
5048 | einfo.abfd = abfd; | |
5049 | einfo.info = info; | |
5050 | einfo.debug = &debug; | |
5051 | einfo.swap = swap; | |
b34976b6 | 5052 | einfo.failed = FALSE; |
252b5132 RH |
5053 | elf_link_hash_traverse (elf_hash_table (info), |
5054 | elf64_alpha_output_extsym, | |
5055 | (PTR) &einfo); | |
5056 | if (einfo.failed) | |
b34976b6 | 5057 | return FALSE; |
252b5132 RH |
5058 | |
5059 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5060 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5061 | |
5062 | /* Skip this section later on (I don't think this currently | |
5063 | matters, but someday it might). */ | |
8423293d | 5064 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5065 | |
5066 | mdebug_sec = o; | |
5067 | } | |
252b5132 RH |
5068 | } |
5069 | ||
5070 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5071 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5072 | return FALSE; |
252b5132 RH |
5073 | |
5074 | /* Now write out the computed sections. */ | |
5075 | ||
5076 | /* The .got subsections... */ | |
5077 | { | |
5078 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5079 | for (i = alpha_elf_hash_table(info)->got_list; | |
5080 | i != NULL; | |
5081 | i = alpha_elf_tdata(i)->got_link_next) | |
5082 | { | |
5083 | asection *sgot; | |
5084 | ||
5085 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5086 | if (i == dynobj) | |
5087 | continue; | |
5088 | ||
5089 | sgot = alpha_elf_tdata(i)->got; | |
5090 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5091 | sgot->contents, |
5092 | (file_ptr) sgot->output_offset, | |
eea6121a | 5093 | sgot->size)) |
b34976b6 | 5094 | return FALSE; |
252b5132 RH |
5095 | } |
5096 | } | |
5097 | ||
252b5132 RH |
5098 | if (mdebug_sec != (asection *) NULL) |
5099 | { | |
5100 | BFD_ASSERT (abfd->output_has_begun); | |
5101 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5102 | swap, info, | |
5103 | mdebug_sec->filepos)) | |
b34976b6 | 5104 | return FALSE; |
252b5132 RH |
5105 | |
5106 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5107 | } | |
5108 | ||
b34976b6 | 5109 | return TRUE; |
252b5132 | 5110 | } |
fcfbdf31 JJ |
5111 | |
5112 | static enum elf_reloc_type_class | |
a7519a3c | 5113 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5114 | { |
f51e552e | 5115 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5116 | { |
5117 | case R_ALPHA_RELATIVE: | |
5118 | return reloc_class_relative; | |
5119 | case R_ALPHA_JMP_SLOT: | |
5120 | return reloc_class_plt; | |
5121 | case R_ALPHA_COPY: | |
5122 | return reloc_class_copy; | |
5123 | default: | |
5124 | return reloc_class_normal; | |
5125 | } | |
5126 | } | |
252b5132 | 5127 | \f |
7f4d3958 L |
5128 | static struct bfd_elf_special_section const |
5129 | alpha_special_sections_s[]= | |
2f89ff8d | 5130 | { |
7dcb9820 AM |
5131 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5132 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5133 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5134 | }; |
5135 | ||
7f4d3958 L |
5136 | static struct bfd_elf_special_section const * |
5137 | elf64_alpha_special_sections[27] = | |
5138 | { | |
5139 | NULL, /* 'a' */ | |
5140 | NULL, /* 'b' */ | |
5141 | NULL, /* 'c' */ | |
5142 | NULL, /* 'd' */ | |
5143 | NULL, /* 'e' */ | |
5144 | NULL, /* 'f' */ | |
5145 | NULL, /* 'g' */ | |
5146 | NULL, /* 'h' */ | |
5147 | NULL, /* 'i' */ | |
5148 | NULL, /* 'j' */ | |
5149 | NULL, /* 'k' */ | |
5150 | NULL, /* 'l' */ | |
5151 | NULL, /* 'm' */ | |
5152 | NULL, /* 'n' */ | |
5153 | NULL, /* 'o' */ | |
5154 | NULL, /* 'p' */ | |
5155 | NULL, /* 'q' */ | |
5156 | NULL, /* 'r' */ | |
5157 | alpha_special_sections_s, /* 's' */ | |
5158 | NULL, /* 't' */ | |
5159 | NULL, /* 'u' */ | |
5160 | NULL, /* 'v' */ | |
5161 | NULL, /* 'w' */ | |
5162 | NULL, /* 'x' */ | |
5163 | NULL, /* 'y' */ | |
5164 | NULL, /* 'z' */ | |
5165 | NULL /* other */ | |
5166 | }; | |
5167 | ||
252b5132 RH |
5168 | /* ECOFF swapping routines. These are used when dealing with the |
5169 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5170 | from elf32-mips.c. */ |
252b5132 RH |
5171 | static const struct ecoff_debug_swap |
5172 | elf64_alpha_ecoff_debug_swap = | |
5173 | { | |
5174 | /* Symbol table magic number. */ | |
5175 | magicSym2, | |
5176 | /* Alignment of debugging information. E.g., 4. */ | |
5177 | 8, | |
5178 | /* Sizes of external symbolic information. */ | |
5179 | sizeof (struct hdr_ext), | |
5180 | sizeof (struct dnr_ext), | |
5181 | sizeof (struct pdr_ext), | |
5182 | sizeof (struct sym_ext), | |
5183 | sizeof (struct opt_ext), | |
5184 | sizeof (struct fdr_ext), | |
5185 | sizeof (struct rfd_ext), | |
5186 | sizeof (struct ext_ext), | |
5187 | /* Functions to swap in external symbolic data. */ | |
5188 | ecoff_swap_hdr_in, | |
5189 | ecoff_swap_dnr_in, | |
5190 | ecoff_swap_pdr_in, | |
5191 | ecoff_swap_sym_in, | |
5192 | ecoff_swap_opt_in, | |
5193 | ecoff_swap_fdr_in, | |
5194 | ecoff_swap_rfd_in, | |
5195 | ecoff_swap_ext_in, | |
5196 | _bfd_ecoff_swap_tir_in, | |
5197 | _bfd_ecoff_swap_rndx_in, | |
5198 | /* Functions to swap out external symbolic data. */ | |
5199 | ecoff_swap_hdr_out, | |
5200 | ecoff_swap_dnr_out, | |
5201 | ecoff_swap_pdr_out, | |
5202 | ecoff_swap_sym_out, | |
5203 | ecoff_swap_opt_out, | |
5204 | ecoff_swap_fdr_out, | |
5205 | ecoff_swap_rfd_out, | |
5206 | ecoff_swap_ext_out, | |
5207 | _bfd_ecoff_swap_tir_out, | |
5208 | _bfd_ecoff_swap_rndx_out, | |
5209 | /* Function to read in symbolic data. */ | |
5210 | elf64_alpha_read_ecoff_info | |
5211 | }; | |
5212 | \f | |
70bcb145 JW |
5213 | /* Use a non-standard hash bucket size of 8. */ |
5214 | ||
562ace6b | 5215 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5216 | { |
5217 | sizeof (Elf64_External_Ehdr), | |
5218 | sizeof (Elf64_External_Phdr), | |
5219 | sizeof (Elf64_External_Shdr), | |
5220 | sizeof (Elf64_External_Rel), | |
5221 | sizeof (Elf64_External_Rela), | |
5222 | sizeof (Elf64_External_Sym), | |
5223 | sizeof (Elf64_External_Dyn), | |
5224 | sizeof (Elf_External_Note), | |
5225 | 8, | |
5226 | 1, | |
45d6a902 | 5227 | 64, 3, |
70bcb145 JW |
5228 | ELFCLASS64, EV_CURRENT, |
5229 | bfd_elf64_write_out_phdrs, | |
5230 | bfd_elf64_write_shdrs_and_ehdr, | |
5231 | bfd_elf64_write_relocs, | |
73ff0d56 | 5232 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5233 | bfd_elf64_swap_symbol_out, |
5234 | bfd_elf64_slurp_reloc_table, | |
5235 | bfd_elf64_slurp_symbol_table, | |
5236 | bfd_elf64_swap_dyn_in, | |
5237 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5238 | bfd_elf64_swap_reloc_in, |
5239 | bfd_elf64_swap_reloc_out, | |
5240 | bfd_elf64_swap_reloca_in, | |
5241 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5242 | }; |
5243 | ||
252b5132 RH |
5244 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5245 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5246 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5247 | #define ELF_MACHINE_CODE EM_ALPHA |
5248 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5249 | |
5250 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5251 | elf64_alpha_bfd_link_hash_table_create | |
5252 | ||
5253 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5254 | elf64_alpha_bfd_reloc_type_lookup | |
5255 | #define elf_info_to_howto \ | |
5256 | elf64_alpha_info_to_howto | |
5257 | ||
5258 | #define bfd_elf64_mkobject \ | |
5259 | elf64_alpha_mkobject | |
5260 | #define elf_backend_object_p \ | |
5261 | elf64_alpha_object_p | |
5262 | ||
5263 | #define elf_backend_section_from_shdr \ | |
5264 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5265 | #define elf_backend_section_flags \ |
5266 | elf64_alpha_section_flags | |
252b5132 RH |
5267 | #define elf_backend_fake_sections \ |
5268 | elf64_alpha_fake_sections | |
5269 | ||
5270 | #define bfd_elf64_bfd_is_local_label_name \ | |
5271 | elf64_alpha_is_local_label_name | |
5272 | #define bfd_elf64_find_nearest_line \ | |
5273 | elf64_alpha_find_nearest_line | |
5274 | #define bfd_elf64_bfd_relax_section \ | |
5275 | elf64_alpha_relax_section | |
5276 | ||
5277 | #define elf_backend_add_symbol_hook \ | |
5278 | elf64_alpha_add_symbol_hook | |
5279 | #define elf_backend_check_relocs \ | |
5280 | elf64_alpha_check_relocs | |
5281 | #define elf_backend_create_dynamic_sections \ | |
5282 | elf64_alpha_create_dynamic_sections | |
5283 | #define elf_backend_adjust_dynamic_symbol \ | |
5284 | elf64_alpha_adjust_dynamic_symbol | |
5285 | #define elf_backend_always_size_sections \ | |
5286 | elf64_alpha_always_size_sections | |
5287 | #define elf_backend_size_dynamic_sections \ | |
5288 | elf64_alpha_size_dynamic_sections | |
5289 | #define elf_backend_relocate_section \ | |
5290 | elf64_alpha_relocate_section | |
5291 | #define elf_backend_finish_dynamic_symbol \ | |
5292 | elf64_alpha_finish_dynamic_symbol | |
5293 | #define elf_backend_finish_dynamic_sections \ | |
5294 | elf64_alpha_finish_dynamic_sections | |
5295 | #define bfd_elf64_bfd_final_link \ | |
5296 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5297 | #define elf_backend_reloc_type_class \ |
5298 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5299 | |
5300 | #define elf_backend_ecoff_debug_swap \ | |
5301 | &elf64_alpha_ecoff_debug_swap | |
5302 | ||
70bcb145 JW |
5303 | #define elf_backend_size_info \ |
5304 | alpha_elf_size_info | |
5305 | ||
2f89ff8d L |
5306 | #define elf_backend_special_sections \ |
5307 | elf64_alpha_special_sections | |
5308 | ||
38b1a46c | 5309 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5310 | #define elf_backend_want_got_plt 0 |
5311 | #define elf_backend_plt_readonly 0 | |
5312 | #define elf_backend_want_plt_sym 1 | |
5313 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5314 | |
5315 | #include "elf64-target.h" | |
2238051f RH |
5316 | \f |
5317 | /* FreeBSD support. */ | |
5318 | ||
5319 | #undef TARGET_LITTLE_SYM | |
5320 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5321 | #undef TARGET_LITTLE_NAME | |
5322 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5323 | ||
5324 | /* The kernel recognizes executables as valid only if they carry a | |
5325 | "FreeBSD" label in the ELF header. So we put this label on all | |
5326 | executables and (for simplicity) also all other object files. */ | |
5327 | ||
2238051f | 5328 | static void |
a7519a3c RH |
5329 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5330 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5331 | { |
5332 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5333 | ||
5334 | i_ehdrp = elf_elfheader (abfd); | |
5335 | ||
5336 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5337 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5338 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5339 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5340 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5341 | #endif | |
5342 | } | |
5343 | ||
5344 | #undef elf_backend_post_process_headers | |
5345 | #define elf_backend_post_process_headers \ | |
5346 | elf64_alpha_fbsd_post_process_headers | |
5347 | ||
571fe01f | 5348 | #undef elf64_bed |
2238051f RH |
5349 | #define elf64_bed elf64_alpha_fbsd_bed |
5350 | ||
5351 | #include "elf64-target.h" |