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 | ||
6ec7057a RH |
50 | \f |
51 | /* Instruction data for plt generation and relaxation. */ | |
52 | ||
53 | #define OP_LDA 0x08 | |
54 | #define OP_LDAH 0x09 | |
55 | #define OP_LDQ 0x29 | |
56 | #define OP_BR 0x30 | |
57 | #define OP_BSR 0x34 | |
58 | ||
59 | #define INSN_LDA (OP_LDA << 26) | |
60 | #define INSN_LDAH (OP_LDAH << 26) | |
61 | #define INSN_LDQ (OP_LDQ << 26) | |
62 | #define INSN_BR (OP_BR << 26) | |
63 | ||
64 | #define INSN_ADDQ 0x40000400 | |
65 | #define INSN_RDUNIQ 0x0000009e | |
66 | #define INSN_SUBQ 0x40000520 | |
67 | #define INSN_S4SUBQ 0x40000560 | |
68 | #define INSN_UNOP 0x2ffe0000 | |
69 | ||
70 | #define INSN_JSR 0x68004000 | |
71 | #define INSN_JMP 0x68000000 | |
72 | #define INSN_JSR_MASK 0xfc00c000 | |
73 | ||
74 | #define INSN_A(I,A) (I | (A << 21)) | |
75 | #define INSN_AB(I,A,B) (I | (A << 21) | (B << 16)) | |
76 | #define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C) | |
77 | #define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff)) | |
78 | #define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff)) | |
79 | ||
80 | /* PLT/GOT Stuff */ | |
81 | ||
82 | /* Set by ld emulation. Putting this into the link_info or hash structure | |
83 | is simply working too hard. */ | |
84 | #ifdef USE_SECUREPLT | |
85 | bfd_boolean elf64_alpha_use_secureplt = TRUE; | |
86 | #else | |
87 | bfd_boolean elf64_alpha_use_secureplt = FALSE; | |
88 | #endif | |
89 | ||
90 | #define OLD_PLT_HEADER_SIZE 32 | |
91 | #define OLD_PLT_ENTRY_SIZE 12 | |
92 | #define NEW_PLT_HEADER_SIZE 36 | |
93 | #define NEW_PLT_ENTRY_SIZE 4 | |
94 | ||
95 | #define PLT_HEADER_SIZE \ | |
96 | (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE) | |
97 | #define PLT_ENTRY_SIZE \ | |
98 | (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE) | |
99 | ||
100 | #define MAX_GOT_SIZE (64*1024) | |
101 | ||
102 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
252b5132 RH |
103 | \f |
104 | struct alpha_elf_link_hash_entry | |
105 | { | |
106 | struct elf_link_hash_entry root; | |
107 | ||
108 | /* External symbol information. */ | |
109 | EXTR esym; | |
110 | ||
111 | /* Cumulative flags for all the .got entries. */ | |
112 | int flags; | |
113 | ||
9e756d64 | 114 | /* Contexts in which a literal was referenced. */ |
8288a39e RH |
115 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
116 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
117 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
118 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
119 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
120 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
121 | #define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40 | |
122 | #define ALPHA_ELF_LINK_HASH_LU_PLT 0x38 | |
123 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x80 | |
cc03ec80 | 124 | |
252b5132 RH |
125 | /* Used to implement multiple .got subsections. */ |
126 | struct alpha_elf_got_entry | |
127 | { | |
128 | struct alpha_elf_got_entry *next; | |
129 | ||
571fe01f | 130 | /* Which .got subsection? */ |
252b5132 RH |
131 | bfd *gotobj; |
132 | ||
571fe01f | 133 | /* The addend in effect for this entry. */ |
dc810e39 | 134 | bfd_vma addend; |
252b5132 | 135 | |
571fe01f | 136 | /* The .got offset for this entry. */ |
252b5132 RH |
137 | int got_offset; |
138 | ||
6ec7057a RH |
139 | /* The .plt offset for this entry. */ |
140 | int plt_offset; | |
141 | ||
3765b1be RH |
142 | /* How many references to this entry? */ |
143 | int use_count; | |
252b5132 | 144 | |
3765b1be RH |
145 | /* The relocation type of this entry. */ |
146 | unsigned char reloc_type; | |
252b5132 | 147 | |
3765b1be RH |
148 | /* How a LITERAL is used. */ |
149 | unsigned char flags; | |
150 | ||
151 | /* Have we initialized the dynamic relocation for this entry? */ | |
152 | unsigned char reloc_done; | |
153 | ||
154 | /* Have we adjusted this entry for SEC_MERGE? */ | |
155 | unsigned char reloc_xlated; | |
252b5132 RH |
156 | } *got_entries; |
157 | ||
571fe01f | 158 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
159 | of relocation sections. */ |
160 | struct alpha_elf_reloc_entry | |
161 | { | |
162 | struct alpha_elf_reloc_entry *next; | |
163 | ||
571fe01f | 164 | /* Which .reloc section? */ |
252b5132 RH |
165 | asection *srel; |
166 | ||
571fe01f | 167 | /* What kind of relocation? */ |
fcfbdf31 JJ |
168 | unsigned int rtype; |
169 | ||
571fe01f | 170 | /* Is this against read-only section? */ |
fcfbdf31 | 171 | unsigned int reltext : 1; |
252b5132 | 172 | |
571fe01f | 173 | /* How many did we find? */ |
252b5132 RH |
174 | unsigned long count; |
175 | } *reloc_entries; | |
176 | }; | |
177 | ||
178 | /* Alpha ELF linker hash table. */ | |
179 | ||
180 | struct alpha_elf_link_hash_table | |
181 | { | |
182 | struct elf_link_hash_table root; | |
183 | ||
184 | /* The head of a list of .got subsections linked through | |
185 | alpha_elf_tdata(abfd)->got_link_next. */ | |
186 | bfd *got_list; | |
187 | }; | |
188 | ||
189 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
190 | ||
191 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
192 | ((struct alpha_elf_link_hash_entry *) \ | |
193 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
194 | (copy), (follow))) | |
195 | ||
196 | /* Traverse a Alpha ELF linker hash table. */ | |
197 | ||
198 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
199 | (elf_link_hash_traverse \ | |
200 | (&(table)->root, \ | |
a7519a3c | 201 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
252b5132 RH |
202 | (info))) |
203 | ||
204 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
205 | ||
206 | #define alpha_elf_hash_table(p) \ | |
207 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
208 | ||
209 | /* Get the object's symbols as our own entry type. */ | |
210 | ||
211 | #define alpha_elf_sym_hashes(abfd) \ | |
212 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
213 | ||
986a241f RH |
214 | /* Should we do dynamic things to this symbol? This differs from the |
215 | generic version in that we never need to consider function pointer | |
216 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
217 | address is ever taken. */ | |
252b5132 | 218 | |
986a241f | 219 | static inline bfd_boolean |
a7519a3c RH |
220 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
221 | struct bfd_link_info *info) | |
8fb35fed | 222 | { |
986a241f | 223 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 224 | } |
252b5132 RH |
225 | |
226 | /* Create an entry in a Alpha ELF linker hash table. */ | |
227 | ||
228 | static struct bfd_hash_entry * | |
a7519a3c RH |
229 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
230 | struct bfd_hash_table *table, | |
231 | const char *string) | |
252b5132 RH |
232 | { |
233 | struct alpha_elf_link_hash_entry *ret = | |
234 | (struct alpha_elf_link_hash_entry *) entry; | |
235 | ||
236 | /* Allocate the structure if it has not already been allocated by a | |
237 | subclass. */ | |
238 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
239 | ret = ((struct alpha_elf_link_hash_entry *) | |
240 | bfd_hash_allocate (table, | |
241 | sizeof (struct alpha_elf_link_hash_entry))); | |
242 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
243 | return (struct bfd_hash_entry *) ret; | |
244 | ||
245 | /* Call the allocation method of the superclass. */ | |
246 | ret = ((struct alpha_elf_link_hash_entry *) | |
247 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
248 | table, string)); | |
249 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
250 | { | |
251 | /* Set local fields. */ | |
252 | memset (&ret->esym, 0, sizeof (EXTR)); | |
253 | /* We use -2 as a marker to indicate that the information has | |
254 | not been set. -1 means there is no associated ifd. */ | |
255 | ret->esym.ifd = -2; | |
256 | ret->flags = 0; | |
257 | ret->got_entries = NULL; | |
258 | ret->reloc_entries = NULL; | |
259 | } | |
260 | ||
261 | return (struct bfd_hash_entry *) ret; | |
262 | } | |
263 | ||
264 | /* Create a Alpha ELF linker hash table. */ | |
265 | ||
266 | static struct bfd_link_hash_table * | |
a7519a3c | 267 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
268 | { |
269 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 270 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 271 | |
e2d34d7d | 272 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
273 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
274 | return NULL; | |
275 | ||
276 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
277 | elf64_alpha_link_hash_newfunc)) | |
278 | { | |
e2d34d7d | 279 | free (ret); |
252b5132 RH |
280 | return NULL; |
281 | } | |
282 | ||
283 | return &ret->root.root; | |
284 | } | |
285 | \f | |
286 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
287 | ||
288 | struct alpha_elf_obj_tdata | |
289 | { | |
290 | struct elf_obj_tdata root; | |
291 | ||
292 | /* For every input file, these are the got entries for that object's | |
293 | local symbols. */ | |
294 | struct alpha_elf_got_entry ** local_got_entries; | |
295 | ||
296 | /* For every input file, this is the object that owns the got that | |
297 | this input file uses. */ | |
298 | bfd *gotobj; | |
299 | ||
300 | /* For every got, this is a linked list through the objects using this got */ | |
301 | bfd *in_got_link_next; | |
302 | ||
303 | /* For every got, this is a link to the next got subsegment. */ | |
304 | bfd *got_link_next; | |
305 | ||
306 | /* For every got, this is the section. */ | |
307 | asection *got; | |
308 | ||
3765b1be RH |
309 | /* For every got, this is it's total number of words. */ |
310 | int total_got_size; | |
252b5132 | 311 | |
3765b1be | 312 | /* For every got, this is the sum of the number of words required |
252b5132 | 313 | to hold all of the member object's local got. */ |
3765b1be | 314 | int local_got_size; |
252b5132 RH |
315 | }; |
316 | ||
317 | #define alpha_elf_tdata(abfd) \ | |
318 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
319 | ||
b34976b6 | 320 | static bfd_boolean |
a7519a3c | 321 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 322 | { |
dc810e39 AM |
323 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
324 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 325 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
326 | return FALSE; |
327 | return TRUE; | |
252b5132 RH |
328 | } |
329 | ||
b34976b6 | 330 | static bfd_boolean |
a7519a3c | 331 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 332 | { |
252b5132 RH |
333 | /* Set the right machine number for an Alpha ELF file. */ |
334 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
335 | } | |
336 | \f | |
a7519a3c RH |
337 | /* A relocation function which doesn't do anything. */ |
338 | ||
339 | static bfd_reloc_status_type | |
340 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
341 | asymbol *sym ATTRIBUTE_UNUSED, | |
342 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
343 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
344 | { | |
345 | if (output_bfd) | |
346 | reloc->address += sec->output_offset; | |
347 | return bfd_reloc_ok; | |
348 | } | |
349 | ||
350 | /* A relocation function used for an unsupported reloc. */ | |
351 | ||
352 | static bfd_reloc_status_type | |
353 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
354 | asymbol *sym ATTRIBUTE_UNUSED, | |
355 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
356 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
357 | { | |
358 | if (output_bfd) | |
359 | reloc->address += sec->output_offset; | |
360 | return bfd_reloc_notsupported; | |
361 | } | |
362 | ||
363 | /* Do the work of the GPDISP relocation. */ | |
364 | ||
365 | static bfd_reloc_status_type | |
366 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
367 | bfd_byte *p_lda) | |
368 | { | |
369 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
370 | bfd_vma addend; | |
371 | unsigned long i_ldah, i_lda; | |
372 | ||
373 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
374 | i_lda = bfd_get_32 (abfd, p_lda); | |
375 | ||
376 | /* Complain if the instructions are not correct. */ | |
377 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
378 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
379 | ret = bfd_reloc_dangerous; | |
380 | ||
381 | /* Extract the user-supplied offset, mirroring the sign extensions | |
382 | that the instructions perform. */ | |
383 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
384 | addend = (addend ^ 0x80008000) - 0x80008000; | |
385 | ||
386 | gpdisp += addend; | |
387 | ||
388 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
389 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
390 | ret = bfd_reloc_overflow; | |
391 | ||
392 | /* compensate for the sign extension again. */ | |
393 | i_ldah = ((i_ldah & 0xffff0000) | |
394 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
395 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
396 | ||
397 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
398 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
403 | /* The special function for the GPDISP reloc. */ | |
404 | ||
405 | static bfd_reloc_status_type | |
406 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
407 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
408 | asection *input_section, bfd *output_bfd, | |
409 | char **err_msg) | |
410 | { | |
411 | bfd_reloc_status_type ret; | |
412 | bfd_vma gp, relocation; | |
413 | bfd_vma high_address; | |
414 | bfd_byte *p_ldah, *p_lda; | |
415 | ||
416 | /* Don't do anything if we're not doing a final link. */ | |
417 | if (output_bfd) | |
418 | { | |
419 | reloc_entry->address += input_section->output_offset; | |
420 | return bfd_reloc_ok; | |
421 | } | |
422 | ||
423 | high_address = bfd_get_section_limit (abfd, input_section); | |
424 | if (reloc_entry->address > high_address | |
425 | || reloc_entry->address + reloc_entry->addend > high_address) | |
426 | return bfd_reloc_outofrange; | |
427 | ||
428 | /* The gp used in the portion of the output object to which this | |
429 | input object belongs is cached on the input bfd. */ | |
430 | gp = _bfd_get_gp_value (abfd); | |
431 | ||
432 | relocation = (input_section->output_section->vma | |
433 | + input_section->output_offset | |
434 | + reloc_entry->address); | |
435 | ||
436 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
437 | p_lda = p_ldah + reloc_entry->addend; | |
438 | ||
439 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
440 | ||
441 | /* Complain if the instructions are not correct. */ | |
442 | if (ret == bfd_reloc_dangerous) | |
443 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
444 | ||
445 | return ret; | |
446 | } | |
447 | ||
252b5132 RH |
448 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
449 | from smaller values. Start with zero, widen, *then* decrement. */ | |
450 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
451 | ||
dfe57ca0 RH |
452 | #define SKIP_HOWTO(N) \ |
453 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
454 | ||
252b5132 RH |
455 | static reloc_howto_type elf64_alpha_howto_table[] = |
456 | { | |
457 | HOWTO (R_ALPHA_NONE, /* type */ | |
458 | 0, /* rightshift */ | |
459 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 8, /* bitsize */ | |
b34976b6 | 461 | TRUE, /* pc_relative */ |
252b5132 RH |
462 | 0, /* bitpos */ |
463 | complain_overflow_dont, /* complain_on_overflow */ | |
464 | elf64_alpha_reloc_nil, /* special_function */ | |
465 | "NONE", /* name */ | |
b34976b6 | 466 | FALSE, /* partial_inplace */ |
252b5132 RH |
467 | 0, /* src_mask */ |
468 | 0, /* dst_mask */ | |
b34976b6 | 469 | TRUE), /* pcrel_offset */ |
252b5132 RH |
470 | |
471 | /* A 32 bit reference to a symbol. */ | |
472 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
473 | 0, /* rightshift */ | |
474 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 32, /* bitsize */ | |
b34976b6 | 476 | FALSE, /* pc_relative */ |
252b5132 RH |
477 | 0, /* bitpos */ |
478 | complain_overflow_bitfield, /* complain_on_overflow */ | |
479 | 0, /* special_function */ | |
480 | "REFLONG", /* name */ | |
b34976b6 | 481 | FALSE, /* partial_inplace */ |
252b5132 RH |
482 | 0xffffffff, /* src_mask */ |
483 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 484 | FALSE), /* pcrel_offset */ |
252b5132 RH |
485 | |
486 | /* A 64 bit reference to a symbol. */ | |
487 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
488 | 0, /* rightshift */ | |
489 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 64, /* bitsize */ | |
b34976b6 | 491 | FALSE, /* pc_relative */ |
252b5132 RH |
492 | 0, /* bitpos */ |
493 | complain_overflow_bitfield, /* complain_on_overflow */ | |
494 | 0, /* special_function */ | |
495 | "REFQUAD", /* name */ | |
b34976b6 | 496 | FALSE, /* partial_inplace */ |
252b5132 RH |
497 | MINUS_ONE, /* src_mask */ |
498 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 499 | FALSE), /* pcrel_offset */ |
252b5132 RH |
500 | |
501 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
502 | that when the value is used the value of the gp register will be | |
503 | added in. */ | |
504 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
505 | 0, /* rightshift */ | |
506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
507 | 32, /* bitsize */ | |
b34976b6 | 508 | FALSE, /* pc_relative */ |
252b5132 RH |
509 | 0, /* bitpos */ |
510 | complain_overflow_bitfield, /* complain_on_overflow */ | |
511 | 0, /* special_function */ | |
512 | "GPREL32", /* name */ | |
b34976b6 | 513 | FALSE, /* partial_inplace */ |
252b5132 RH |
514 | 0xffffffff, /* src_mask */ |
515 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 516 | FALSE), /* pcrel_offset */ |
252b5132 RH |
517 | |
518 | /* Used for an instruction that refers to memory off the GP register. */ | |
519 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
520 | 0, /* rightshift */ | |
dfe57ca0 | 521 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 522 | 16, /* bitsize */ |
b34976b6 | 523 | FALSE, /* pc_relative */ |
252b5132 RH |
524 | 0, /* bitpos */ |
525 | complain_overflow_signed, /* complain_on_overflow */ | |
526 | 0, /* special_function */ | |
527 | "ELF_LITERAL", /* name */ | |
b34976b6 | 528 | FALSE, /* partial_inplace */ |
252b5132 RH |
529 | 0xffff, /* src_mask */ |
530 | 0xffff, /* dst_mask */ | |
b34976b6 | 531 | FALSE), /* pcrel_offset */ |
252b5132 RH |
532 | |
533 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
534 | It identifies a use of the literal. The symbol index is special: | |
535 | 1 means the literal address is in the base register of a memory | |
536 | format instruction; 2 means the literal address is in the byte | |
537 | offset register of a byte-manipulation instruction; 3 means the | |
538 | literal address is in the target register of a jsr instruction. | |
539 | This does not actually do any relocation. */ | |
540 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
541 | 0, /* rightshift */ | |
dfe57ca0 | 542 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 543 | 32, /* bitsize */ |
b34976b6 | 544 | FALSE, /* pc_relative */ |
252b5132 RH |
545 | 0, /* bitpos */ |
546 | complain_overflow_dont, /* complain_on_overflow */ | |
547 | elf64_alpha_reloc_nil, /* special_function */ | |
548 | "LITUSE", /* name */ | |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
252b5132 RH |
550 | 0, /* src_mask */ |
551 | 0, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
252b5132 RH |
553 | |
554 | /* Load the gp register. This is always used for a ldah instruction | |
555 | which loads the upper 16 bits of the gp register. The symbol | |
556 | index of the GPDISP instruction is an offset in bytes to the lda | |
557 | instruction that loads the lower 16 bits. The value to use for | |
558 | the relocation is the difference between the GP value and the | |
559 | current location; the load will always be done against a register | |
560 | holding the current address. | |
561 | ||
562 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
563 | any offset is present in the instructions, it is an offset from | |
564 | the register to the ldah instruction. This lets us avoid any | |
565 | stupid hackery like inventing a gp value to do partial relocation | |
566 | against. Also unlike ECOFF, we do the whole relocation off of | |
567 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
568 | space consuming bit, that, since all the information was present | |
569 | in the GPDISP_HI16 reloc. */ | |
570 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
571 | 16, /* rightshift */ | |
572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 16, /* bitsize */ | |
b34976b6 | 574 | FALSE, /* pc_relative */ |
252b5132 RH |
575 | 0, /* bitpos */ |
576 | complain_overflow_dont, /* complain_on_overflow */ | |
577 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
578 | "GPDISP", /* name */ | |
b34976b6 | 579 | FALSE, /* partial_inplace */ |
252b5132 RH |
580 | 0xffff, /* src_mask */ |
581 | 0xffff, /* dst_mask */ | |
b34976b6 | 582 | TRUE), /* pcrel_offset */ |
252b5132 RH |
583 | |
584 | /* A 21 bit branch. */ | |
585 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
586 | 2, /* rightshift */ | |
587 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 21, /* bitsize */ | |
b34976b6 | 589 | TRUE, /* pc_relative */ |
252b5132 RH |
590 | 0, /* bitpos */ |
591 | complain_overflow_signed, /* complain_on_overflow */ | |
592 | 0, /* special_function */ | |
593 | "BRADDR", /* name */ | |
b34976b6 | 594 | FALSE, /* partial_inplace */ |
252b5132 RH |
595 | 0x1fffff, /* src_mask */ |
596 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 597 | TRUE), /* pcrel_offset */ |
252b5132 RH |
598 | |
599 | /* A hint for a jump to a register. */ | |
600 | HOWTO (R_ALPHA_HINT, /* type */ | |
601 | 2, /* rightshift */ | |
dfe57ca0 | 602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 603 | 14, /* bitsize */ |
b34976b6 | 604 | TRUE, /* pc_relative */ |
252b5132 RH |
605 | 0, /* bitpos */ |
606 | complain_overflow_dont, /* complain_on_overflow */ | |
607 | 0, /* special_function */ | |
608 | "HINT", /* name */ | |
b34976b6 | 609 | FALSE, /* partial_inplace */ |
252b5132 RH |
610 | 0x3fff, /* src_mask */ |
611 | 0x3fff, /* dst_mask */ | |
b34976b6 | 612 | TRUE), /* pcrel_offset */ |
252b5132 RH |
613 | |
614 | /* 16 bit PC relative offset. */ | |
615 | HOWTO (R_ALPHA_SREL16, /* type */ | |
616 | 0, /* rightshift */ | |
617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 16, /* bitsize */ | |
b34976b6 | 619 | TRUE, /* pc_relative */ |
252b5132 RH |
620 | 0, /* bitpos */ |
621 | complain_overflow_signed, /* complain_on_overflow */ | |
622 | 0, /* special_function */ | |
623 | "SREL16", /* name */ | |
b34976b6 | 624 | FALSE, /* partial_inplace */ |
252b5132 RH |
625 | 0xffff, /* src_mask */ |
626 | 0xffff, /* dst_mask */ | |
b34976b6 | 627 | TRUE), /* pcrel_offset */ |
252b5132 RH |
628 | |
629 | /* 32 bit PC relative offset. */ | |
630 | HOWTO (R_ALPHA_SREL32, /* type */ | |
631 | 0, /* rightshift */ | |
632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
633 | 32, /* bitsize */ | |
b34976b6 | 634 | TRUE, /* pc_relative */ |
252b5132 RH |
635 | 0, /* bitpos */ |
636 | complain_overflow_signed, /* complain_on_overflow */ | |
637 | 0, /* special_function */ | |
638 | "SREL32", /* name */ | |
b34976b6 | 639 | FALSE, /* partial_inplace */ |
252b5132 RH |
640 | 0xffffffff, /* src_mask */ |
641 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 642 | TRUE), /* pcrel_offset */ |
252b5132 RH |
643 | |
644 | /* A 64 bit PC relative offset. */ | |
645 | HOWTO (R_ALPHA_SREL64, /* type */ | |
646 | 0, /* rightshift */ | |
647 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 64, /* bitsize */ | |
b34976b6 | 649 | TRUE, /* pc_relative */ |
252b5132 RH |
650 | 0, /* bitpos */ |
651 | complain_overflow_signed, /* complain_on_overflow */ | |
652 | 0, /* special_function */ | |
653 | "SREL64", /* name */ | |
b34976b6 | 654 | FALSE, /* partial_inplace */ |
252b5132 RH |
655 | MINUS_ONE, /* src_mask */ |
656 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 657 | TRUE), /* pcrel_offset */ |
252b5132 | 658 | |
dfe57ca0 RH |
659 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
660 | SKIP_HOWTO (12), | |
661 | SKIP_HOWTO (13), | |
662 | SKIP_HOWTO (14), | |
663 | SKIP_HOWTO (15), | |
664 | SKIP_HOWTO (16), | |
252b5132 RH |
665 | |
666 | /* The high 16 bits of the displacement from GP to the target. */ | |
667 | HOWTO (R_ALPHA_GPRELHIGH, | |
668 | 0, /* rightshift */ | |
dfe57ca0 | 669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 670 | 16, /* bitsize */ |
b34976b6 | 671 | FALSE, /* pc_relative */ |
252b5132 RH |
672 | 0, /* bitpos */ |
673 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 674 | 0, /* special_function */ |
252b5132 | 675 | "GPRELHIGH", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
252b5132 RH |
677 | 0xffff, /* src_mask */ |
678 | 0xffff, /* dst_mask */ | |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
252b5132 RH |
680 | |
681 | /* The low 16 bits of the displacement from GP to the target. */ | |
682 | HOWTO (R_ALPHA_GPRELLOW, | |
683 | 0, /* rightshift */ | |
dfe57ca0 | 684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 685 | 16, /* bitsize */ |
b34976b6 | 686 | FALSE, /* pc_relative */ |
252b5132 RH |
687 | 0, /* bitpos */ |
688 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 689 | 0, /* special_function */ |
252b5132 | 690 | "GPRELLOW", /* name */ |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
252b5132 RH |
692 | 0xffff, /* src_mask */ |
693 | 0xffff, /* dst_mask */ | |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
252b5132 RH |
695 | |
696 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 697 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 698 | 0, /* rightshift */ |
dfe57ca0 | 699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 700 | 16, /* bitsize */ |
b34976b6 | 701 | FALSE, /* pc_relative */ |
252b5132 RH |
702 | 0, /* bitpos */ |
703 | complain_overflow_signed, /* complain_on_overflow */ | |
704 | 0, /* special_function */ | |
dfe57ca0 | 705 | "GPREL16", /* name */ |
b34976b6 | 706 | FALSE, /* partial_inplace */ |
252b5132 RH |
707 | 0xffff, /* src_mask */ |
708 | 0xffff, /* dst_mask */ | |
b34976b6 | 709 | FALSE), /* pcrel_offset */ |
252b5132 | 710 | |
dfe57ca0 RH |
711 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
712 | SKIP_HOWTO (20), | |
713 | SKIP_HOWTO (21), | |
714 | SKIP_HOWTO (22), | |
715 | SKIP_HOWTO (23), | |
252b5132 | 716 | |
fe8bc63d | 717 | /* Misc ELF relocations. */ |
252b5132 RH |
718 | |
719 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
720 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
721 | is present because every other ELF has one, but should not be used | |
722 | because .dynbss is an ugly thing. */ | |
723 | HOWTO (R_ALPHA_COPY, | |
724 | 0, | |
725 | 0, | |
726 | 0, | |
b34976b6 | 727 | FALSE, |
252b5132 RH |
728 | 0, |
729 | complain_overflow_dont, | |
730 | bfd_elf_generic_reloc, | |
731 | "COPY", | |
b34976b6 | 732 | FALSE, |
252b5132 RH |
733 | 0, |
734 | 0, | |
b34976b6 | 735 | TRUE), |
252b5132 RH |
736 | |
737 | /* A dynamic relocation for a .got entry. */ | |
738 | HOWTO (R_ALPHA_GLOB_DAT, | |
739 | 0, | |
740 | 0, | |
741 | 0, | |
b34976b6 | 742 | FALSE, |
252b5132 RH |
743 | 0, |
744 | complain_overflow_dont, | |
745 | bfd_elf_generic_reloc, | |
746 | "GLOB_DAT", | |
b34976b6 | 747 | FALSE, |
252b5132 RH |
748 | 0, |
749 | 0, | |
b34976b6 | 750 | TRUE), |
252b5132 RH |
751 | |
752 | /* A dynamic relocation for a .plt entry. */ | |
753 | HOWTO (R_ALPHA_JMP_SLOT, | |
754 | 0, | |
755 | 0, | |
756 | 0, | |
b34976b6 | 757 | FALSE, |
252b5132 RH |
758 | 0, |
759 | complain_overflow_dont, | |
760 | bfd_elf_generic_reloc, | |
761 | "JMP_SLOT", | |
b34976b6 | 762 | FALSE, |
252b5132 RH |
763 | 0, |
764 | 0, | |
b34976b6 | 765 | TRUE), |
252b5132 RH |
766 | |
767 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
768 | HOWTO (R_ALPHA_RELATIVE, | |
769 | 0, | |
770 | 0, | |
771 | 0, | |
b34976b6 | 772 | FALSE, |
252b5132 RH |
773 | 0, |
774 | complain_overflow_dont, | |
775 | bfd_elf_generic_reloc, | |
776 | "RELATIVE", | |
b34976b6 | 777 | FALSE, |
252b5132 RH |
778 | 0, |
779 | 0, | |
b34976b6 | 780 | TRUE), |
7793f4d0 RH |
781 | |
782 | /* A 21 bit branch that adjusts for gp loads. */ | |
783 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
784 | 2, /* rightshift */ | |
785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 21, /* bitsize */ | |
b34976b6 | 787 | TRUE, /* pc_relative */ |
7793f4d0 RH |
788 | 0, /* bitpos */ |
789 | complain_overflow_signed, /* complain_on_overflow */ | |
790 | 0, /* special_function */ | |
791 | "BRSGP", /* name */ | |
b34976b6 | 792 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
793 | 0x1fffff, /* src_mask */ |
794 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 795 | TRUE), /* pcrel_offset */ |
3765b1be RH |
796 | |
797 | /* Creates a tls_index for the symbol in the got. */ | |
798 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
799 | 0, /* rightshift */ | |
800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 16, /* bitsize */ | |
b34976b6 | 802 | FALSE, /* pc_relative */ |
3765b1be RH |
803 | 0, /* bitpos */ |
804 | complain_overflow_signed, /* complain_on_overflow */ | |
805 | 0, /* special_function */ | |
806 | "TLSGD", /* name */ | |
b34976b6 | 807 | FALSE, /* partial_inplace */ |
3765b1be RH |
808 | 0xffff, /* src_mask */ |
809 | 0xffff, /* dst_mask */ | |
b34976b6 | 810 | FALSE), /* pcrel_offset */ |
3765b1be RH |
811 | |
812 | /* Creates a tls_index for the (current) module in the got. */ | |
813 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
814 | 0, /* rightshift */ | |
815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 16, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
3765b1be RH |
818 | 0, /* bitpos */ |
819 | complain_overflow_signed, /* complain_on_overflow */ | |
820 | 0, /* special_function */ | |
821 | "TLSLDM", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
3765b1be RH |
823 | 0xffff, /* src_mask */ |
824 | 0xffff, /* dst_mask */ | |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
3765b1be RH |
826 | |
827 | /* A dynamic relocation for a DTP module entry. */ | |
828 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
829 | 0, /* rightshift */ | |
830 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 64, /* bitsize */ | |
b34976b6 | 832 | FALSE, /* pc_relative */ |
3765b1be RH |
833 | 0, /* bitpos */ |
834 | complain_overflow_bitfield, /* complain_on_overflow */ | |
835 | 0, /* special_function */ | |
836 | "DTPMOD64", /* name */ | |
b34976b6 | 837 | FALSE, /* partial_inplace */ |
3765b1be RH |
838 | MINUS_ONE, /* src_mask */ |
839 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 840 | FALSE), /* pcrel_offset */ |
3765b1be RH |
841 | |
842 | /* Creates a 64-bit offset in the got for the displacement | |
843 | from DTP to the target. */ | |
844 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 16, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
3765b1be RH |
849 | 0, /* bitpos */ |
850 | complain_overflow_signed, /* complain_on_overflow */ | |
851 | 0, /* special_function */ | |
852 | "GOTDTPREL", /* name */ | |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
3765b1be RH |
854 | 0xffff, /* src_mask */ |
855 | 0xffff, /* dst_mask */ | |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
3765b1be RH |
857 | |
858 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
859 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
860 | 0, /* rightshift */ | |
861 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 64, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
3765b1be RH |
864 | 0, /* bitpos */ |
865 | complain_overflow_bitfield, /* complain_on_overflow */ | |
866 | 0, /* special_function */ | |
867 | "DTPREL64", /* name */ | |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
3765b1be RH |
869 | MINUS_ONE, /* src_mask */ |
870 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
3765b1be RH |
872 | |
873 | /* The high 16 bits of the displacement from DTP to the target. */ | |
874 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
875 | 0, /* rightshift */ | |
876 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 16, /* bitsize */ | |
b34976b6 | 878 | FALSE, /* pc_relative */ |
3765b1be RH |
879 | 0, /* bitpos */ |
880 | complain_overflow_signed, /* complain_on_overflow */ | |
881 | 0, /* special_function */ | |
882 | "DTPRELHI", /* name */ | |
b34976b6 | 883 | FALSE, /* partial_inplace */ |
3765b1be RH |
884 | 0xffff, /* src_mask */ |
885 | 0xffff, /* dst_mask */ | |
b34976b6 | 886 | FALSE), /* pcrel_offset */ |
3765b1be RH |
887 | |
888 | /* The low 16 bits of the displacement from DTP to the target. */ | |
889 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
890 | 0, /* rightshift */ | |
891 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
892 | 16, /* bitsize */ | |
b34976b6 | 893 | FALSE, /* pc_relative */ |
3765b1be RH |
894 | 0, /* bitpos */ |
895 | complain_overflow_dont, /* complain_on_overflow */ | |
896 | 0, /* special_function */ | |
897 | "DTPRELLO", /* name */ | |
b34976b6 | 898 | FALSE, /* partial_inplace */ |
3765b1be RH |
899 | 0xffff, /* src_mask */ |
900 | 0xffff, /* dst_mask */ | |
b34976b6 | 901 | FALSE), /* pcrel_offset */ |
3765b1be RH |
902 | |
903 | /* A 16-bit displacement from DTP to the target. */ | |
904 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
905 | 0, /* rightshift */ | |
906 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 16, /* bitsize */ | |
b34976b6 | 908 | FALSE, /* pc_relative */ |
3765b1be RH |
909 | 0, /* bitpos */ |
910 | complain_overflow_signed, /* complain_on_overflow */ | |
911 | 0, /* special_function */ | |
912 | "DTPREL16", /* name */ | |
b34976b6 | 913 | FALSE, /* partial_inplace */ |
3765b1be RH |
914 | 0xffff, /* src_mask */ |
915 | 0xffff, /* dst_mask */ | |
b34976b6 | 916 | FALSE), /* pcrel_offset */ |
3765b1be RH |
917 | |
918 | /* Creates a 64-bit offset in the got for the displacement | |
919 | from TP to the target. */ | |
920 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
921 | 0, /* rightshift */ | |
922 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 16, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
3765b1be RH |
925 | 0, /* bitpos */ |
926 | complain_overflow_signed, /* complain_on_overflow */ | |
927 | 0, /* special_function */ | |
928 | "GOTTPREL", /* name */ | |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
3765b1be RH |
930 | 0xffff, /* src_mask */ |
931 | 0xffff, /* dst_mask */ | |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
3765b1be RH |
933 | |
934 | /* A dynamic relocation for a displacement from TP to the target. */ | |
935 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
936 | 0, /* rightshift */ | |
937 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 64, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
3765b1be RH |
940 | 0, /* bitpos */ |
941 | complain_overflow_bitfield, /* complain_on_overflow */ | |
942 | 0, /* special_function */ | |
943 | "TPREL64", /* name */ | |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
3765b1be RH |
945 | MINUS_ONE, /* src_mask */ |
946 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
3765b1be RH |
948 | |
949 | /* The high 16 bits of the displacement from TP to the target. */ | |
950 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
951 | 0, /* rightshift */ | |
952 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 16, /* bitsize */ | |
b34976b6 | 954 | FALSE, /* pc_relative */ |
3765b1be RH |
955 | 0, /* bitpos */ |
956 | complain_overflow_signed, /* complain_on_overflow */ | |
957 | 0, /* special_function */ | |
958 | "TPRELHI", /* name */ | |
b34976b6 | 959 | FALSE, /* partial_inplace */ |
3765b1be RH |
960 | 0xffff, /* src_mask */ |
961 | 0xffff, /* dst_mask */ | |
b34976b6 | 962 | FALSE), /* pcrel_offset */ |
3765b1be RH |
963 | |
964 | /* The low 16 bits of the displacement from TP to the target. */ | |
965 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
966 | 0, /* rightshift */ | |
967 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 16, /* bitsize */ | |
b34976b6 | 969 | FALSE, /* pc_relative */ |
3765b1be RH |
970 | 0, /* bitpos */ |
971 | complain_overflow_dont, /* complain_on_overflow */ | |
972 | 0, /* special_function */ | |
973 | "TPRELLO", /* name */ | |
b34976b6 | 974 | FALSE, /* partial_inplace */ |
3765b1be RH |
975 | 0xffff, /* src_mask */ |
976 | 0xffff, /* dst_mask */ | |
b34976b6 | 977 | FALSE), /* pcrel_offset */ |
3765b1be RH |
978 | |
979 | /* A 16-bit displacement from TP to the target. */ | |
980 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
981 | 0, /* rightshift */ | |
982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 16, /* bitsize */ | |
b34976b6 | 984 | FALSE, /* pc_relative */ |
3765b1be RH |
985 | 0, /* bitpos */ |
986 | complain_overflow_signed, /* complain_on_overflow */ | |
987 | 0, /* special_function */ | |
988 | "TPREL16", /* name */ | |
b34976b6 | 989 | FALSE, /* partial_inplace */ |
3765b1be RH |
990 | 0xffff, /* src_mask */ |
991 | 0xffff, /* dst_mask */ | |
b34976b6 | 992 | FALSE), /* pcrel_offset */ |
252b5132 RH |
993 | }; |
994 | ||
252b5132 RH |
995 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
996 | ||
997 | struct elf_reloc_map | |
998 | { | |
999 | bfd_reloc_code_real_type bfd_reloc_val; | |
1000 | int elf_reloc_val; | |
1001 | }; | |
1002 | ||
1003 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1004 | { | |
dfe57ca0 RH |
1005 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1006 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1007 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1008 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1009 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1010 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1011 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1012 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1013 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1014 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1015 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1016 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1017 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1018 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1019 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1020 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1021 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1022 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1023 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1024 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1025 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1026 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1027 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1028 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1029 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1030 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1031 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1032 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1033 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1034 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1035 | }; |
1036 | ||
1037 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1038 | ||
1039 | static reloc_howto_type * | |
a7519a3c RH |
1040 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1041 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1042 | { |
1043 | const struct elf_reloc_map *i, *e; | |
1044 | i = e = elf64_alpha_reloc_map; | |
1045 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1046 | for (; i != e; ++i) | |
1047 | { | |
1048 | if (i->bfd_reloc_val == code) | |
1049 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1050 | } | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1055 | ||
1056 | static void | |
a7519a3c RH |
1057 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1058 | Elf_Internal_Rela *dst) | |
252b5132 | 1059 | { |
a7519a3c | 1060 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1061 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1062 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1063 | } | |
3765b1be RH |
1064 | |
1065 | /* These two relocations create a two-word entry in the got. */ | |
1066 | #define alpha_got_entry_size(r_type) \ | |
1067 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1068 | |
1069 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1070 | #define alpha_get_dtprel_base(info) \ |
1071 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1072 | |
1073 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1074 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1075 | #define alpha_get_tprel_base(info) \ |
1076 | (elf_hash_table (info)->tls_sec->vma \ | |
1077 | - align_power ((bfd_vma) 16, \ | |
1078 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1079 | \f |
a7519a3c RH |
1080 | /* Handle an Alpha specific section when reading an object file. This |
1081 | is called when bfd_section_from_shdr finds a section with an unknown | |
1082 | type. | |
1083 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1084 | how to. */ | |
252b5132 | 1085 | |
a7519a3c RH |
1086 | static bfd_boolean |
1087 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1088 | Elf_Internal_Shdr *hdr, | |
1089 | const char *name, | |
1090 | int shindex) | |
252b5132 | 1091 | { |
a7519a3c RH |
1092 | asection *newsect; |
1093 | ||
1094 | /* There ought to be a place to keep ELF backend specific flags, but | |
1095 | at the moment there isn't one. We just keep track of the | |
1096 | sections by their name, instead. Fortunately, the ABI gives | |
1097 | suggested names for all the MIPS specific sections, so we will | |
1098 | probably get away with this. */ | |
1099 | switch (hdr->sh_type) | |
1100 | { | |
1101 | case SHT_ALPHA_DEBUG: | |
1102 | if (strcmp (name, ".mdebug") != 0) | |
1103 | return FALSE; | |
1104 | break; | |
1105 | default: | |
1106 | return FALSE; | |
1107 | } | |
252b5132 | 1108 | |
a7519a3c RH |
1109 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1110 | return FALSE; | |
1111 | newsect = hdr->bfd_section; | |
252b5132 | 1112 | |
a7519a3c | 1113 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1114 | { |
a7519a3c RH |
1115 | if (! bfd_set_section_flags (abfd, newsect, |
1116 | (bfd_get_section_flags (abfd, newsect) | |
1117 | | SEC_DEBUGGING))) | |
1118 | return FALSE; | |
252b5132 | 1119 | } |
a7519a3c RH |
1120 | |
1121 | return TRUE; | |
252b5132 RH |
1122 | } |
1123 | ||
a7519a3c RH |
1124 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1125 | ||
b34976b6 | 1126 | static bfd_boolean |
a7519a3c | 1127 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1128 | { |
a7519a3c RH |
1129 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1130 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1131 | |
a7519a3c RH |
1132 | return TRUE; |
1133 | } | |
252b5132 | 1134 | |
a7519a3c RH |
1135 | /* Set the correct type for an Alpha ELF section. We do this by the |
1136 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1137 | |
a7519a3c RH |
1138 | static bfd_boolean |
1139 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1140 | { | |
1141 | register const char *name; | |
1142 | ||
1143 | name = bfd_get_section_name (abfd, sec); | |
1144 | ||
1145 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1146 | { |
a7519a3c RH |
1147 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1148 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1149 | entsize of 0. FIXME: Does this matter? */ | |
1150 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1151 | hdr->sh_entsize = 0; | |
1152 | else | |
1153 | hdr->sh_entsize = 1; | |
252b5132 | 1154 | } |
a7519a3c RH |
1155 | else if ((sec->flags & SEC_SMALL_DATA) |
1156 | || strcmp (name, ".sdata") == 0 | |
1157 | || strcmp (name, ".sbss") == 0 | |
1158 | || strcmp (name, ".lit4") == 0 | |
1159 | || strcmp (name, ".lit8") == 0) | |
1160 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1161 | |
a7519a3c RH |
1162 | return TRUE; |
1163 | } | |
252b5132 | 1164 | |
a7519a3c RH |
1165 | /* Hook called by the linker routine which adds symbols from an object |
1166 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1167 | ||
1168 | static bfd_boolean | |
1169 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1170 | Elf_Internal_Sym *sym, | |
1171 | const char **namep ATTRIBUTE_UNUSED, | |
1172 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1173 | asection **secp, bfd_vma *valp) | |
1174 | { | |
1175 | if (sym->st_shndx == SHN_COMMON | |
1176 | && !info->relocatable | |
1177 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1178 | { |
a7519a3c RH |
1179 | /* Common symbols less than or equal to -G nn bytes are |
1180 | automatically put into .sbss. */ | |
ffcb7aff | 1181 | |
a7519a3c | 1182 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1183 | |
a7519a3c | 1184 | if (scomm == NULL) |
252b5132 | 1185 | { |
a7519a3c RH |
1186 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1187 | (SEC_ALLOC | |
1188 | | SEC_IS_COMMON | |
1189 | | SEC_LINKER_CREATED)); | |
1190 | if (scomm == NULL) | |
1191 | return FALSE; | |
1192 | } | |
ffcb7aff | 1193 | |
a7519a3c RH |
1194 | *secp = scomm; |
1195 | *valp = sym->st_size; | |
1196 | } | |
ffcb7aff | 1197 | |
a7519a3c RH |
1198 | return TRUE; |
1199 | } | |
252b5132 | 1200 | |
a7519a3c | 1201 | /* Create the .got section. */ |
252b5132 | 1202 | |
a7519a3c RH |
1203 | static bfd_boolean |
1204 | elf64_alpha_create_got_section (bfd *abfd, | |
1205 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1206 | { | |
1207 | asection *s; | |
252b5132 | 1208 | |
a7519a3c RH |
1209 | if ((s = bfd_get_section_by_name (abfd, ".got"))) |
1210 | { | |
1211 | /* Check for a non-linker created .got? */ | |
1212 | if (alpha_elf_tdata (abfd)->got == NULL) | |
1213 | alpha_elf_tdata (abfd)->got = s; | |
1214 | return TRUE; | |
1215 | } | |
252b5132 | 1216 | |
a7519a3c RH |
1217 | s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD |
1218 | | SEC_HAS_CONTENTS | |
1219 | | SEC_IN_MEMORY | |
1220 | | SEC_LINKER_CREATED)); | |
1221 | if (s == NULL | |
1222 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1223 | return FALSE; | |
252b5132 | 1224 | |
a7519a3c | 1225 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1226 | |
a7519a3c RH |
1227 | return TRUE; |
1228 | } | |
252b5132 | 1229 | |
a7519a3c | 1230 | /* Create all the dynamic sections. */ |
252b5132 | 1231 | |
a7519a3c RH |
1232 | static bfd_boolean |
1233 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1234 | { | |
1235 | asection *s; | |
1236 | struct elf_link_hash_entry *h; | |
1237 | struct bfd_link_hash_entry *bh; | |
252b5132 | 1238 | |
a7519a3c | 1239 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1240 | |
a7519a3c | 1241 | s = bfd_make_section_with_flags (abfd, ".plt", |
6ec7057a | 1242 | (SEC_ALLOC | SEC_LOAD | SEC_CODE |
a7519a3c RH |
1243 | | SEC_HAS_CONTENTS |
1244 | | SEC_IN_MEMORY | |
1245 | | SEC_LINKER_CREATED | |
6ec7057a RH |
1246 | | (elf64_alpha_use_secureplt |
1247 | ? SEC_READONLY : 0))); | |
1248 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) | |
a7519a3c | 1249 | return FALSE; |
252b5132 | 1250 | |
a7519a3c RH |
1251 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1252 | .plt section. */ | |
1253 | bh = NULL; | |
1254 | if (! (_bfd_generic_link_add_one_symbol | |
1255 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1256 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
1257 | get_elf_backend_data (abfd)->collect, &bh))) | |
1258 | return FALSE; | |
1259 | h = (struct elf_link_hash_entry *) bh; | |
1260 | h->def_regular = 1; | |
1261 | h->type = STT_OBJECT; | |
d6ad34f6 | 1262 | |
6ec7057a | 1263 | if (info->shared && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
a7519a3c | 1264 | return FALSE; |
d6ad34f6 | 1265 | |
a7519a3c RH |
1266 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1267 | (SEC_ALLOC | SEC_LOAD | |
1268 | | SEC_HAS_CONTENTS | |
1269 | | SEC_IN_MEMORY | |
1270 | | SEC_LINKER_CREATED | |
1271 | | SEC_READONLY)); | |
6ec7057a | 1272 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
a7519a3c | 1273 | return FALSE; |
252b5132 | 1274 | |
6ec7057a RH |
1275 | if (elf64_alpha_use_secureplt) |
1276 | { | |
1277 | s = bfd_make_section_with_flags (abfd, ".got.plt", | |
1278 | SEC_ALLOC | SEC_LINKER_CREATED); | |
1279 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) | |
1280 | return FALSE; | |
1281 | } | |
1282 | ||
a7519a3c RH |
1283 | /* We may or may not have created a .got section for this object, but |
1284 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1285 | |
a7519a3c RH |
1286 | if (!elf64_alpha_create_got_section (abfd, info)) |
1287 | return FALSE; | |
1cd6895c | 1288 | |
a7519a3c RH |
1289 | s = bfd_make_section_with_flags (abfd, ".rela.got", |
1290 | (SEC_ALLOC | SEC_LOAD | |
1291 | | SEC_HAS_CONTENTS | |
1292 | | SEC_IN_MEMORY | |
1293 | | SEC_LINKER_CREATED | |
1294 | | SEC_READONLY)); | |
1295 | if (s == NULL | |
1296 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1297 | return FALSE; | |
252b5132 | 1298 | |
a7519a3c RH |
1299 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1300 | dynobj's .got section. We don't do this in the linker script | |
1301 | because we don't want to define the symbol if we are not creating | |
1302 | a global offset table. */ | |
1303 | bh = NULL; | |
1304 | if (!(_bfd_generic_link_add_one_symbol | |
1305 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1306 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1307 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
1308 | return FALSE; | |
1309 | h = (struct elf_link_hash_entry *) bh; | |
1310 | h->def_regular = 1; | |
1311 | h->type = STT_OBJECT; | |
252b5132 | 1312 | |
a7519a3c RH |
1313 | if (info->shared |
1314 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1315 | return FALSE; | |
252b5132 | 1316 | |
a7519a3c | 1317 | elf_hash_table (info)->hgot = h; |
252b5132 | 1318 | |
a7519a3c | 1319 | return TRUE; |
252b5132 | 1320 | } |
a7519a3c RH |
1321 | \f |
1322 | /* Read ECOFF debugging information from a .mdebug section into a | |
1323 | ecoff_debug_info structure. */ | |
252b5132 | 1324 | |
a7519a3c RH |
1325 | static bfd_boolean |
1326 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1327 | struct ecoff_debug_info *debug) | |
252b5132 | 1328 | { |
a7519a3c RH |
1329 | HDRR *symhdr; |
1330 | const struct ecoff_debug_swap *swap; | |
1331 | char *ext_hdr = NULL; | |
252b5132 | 1332 | |
a7519a3c RH |
1333 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1334 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1335 | |
a7519a3c RH |
1336 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1337 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1338 | goto error_return; | |
252b5132 | 1339 | |
a7519a3c RH |
1340 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1341 | swap->external_hdr_size)) | |
1342 | goto error_return; | |
252b5132 | 1343 | |
a7519a3c RH |
1344 | symhdr = &debug->symbolic_header; |
1345 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1346 | |
a7519a3c RH |
1347 | /* The symbolic header contains absolute file offsets and sizes to |
1348 | read. */ | |
1349 | #define READ(ptr, offset, count, size, type) \ | |
1350 | if (symhdr->count == 0) \ | |
1351 | debug->ptr = NULL; \ | |
1352 | else \ | |
1353 | { \ | |
1354 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1355 | debug->ptr = (type) bfd_malloc (amt); \ | |
1356 | if (debug->ptr == NULL) \ | |
1357 | goto error_return; \ | |
1358 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1359 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1360 | goto error_return; \ | |
1361 | } | |
fe8bc63d | 1362 | |
a7519a3c RH |
1363 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1364 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1365 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1366 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1367 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1368 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1369 | union aux_ext *); | |
1370 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1371 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1372 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1373 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1374 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1375 | #undef READ | |
252b5132 | 1376 | |
a7519a3c | 1377 | debug->fdr = NULL; |
252b5132 | 1378 | |
a7519a3c | 1379 | return TRUE; |
252b5132 | 1380 | |
a7519a3c RH |
1381 | error_return: |
1382 | if (ext_hdr != NULL) | |
1383 | free (ext_hdr); | |
1384 | if (debug->line != NULL) | |
1385 | free (debug->line); | |
1386 | if (debug->external_dnr != NULL) | |
1387 | free (debug->external_dnr); | |
1388 | if (debug->external_pdr != NULL) | |
1389 | free (debug->external_pdr); | |
1390 | if (debug->external_sym != NULL) | |
1391 | free (debug->external_sym); | |
1392 | if (debug->external_opt != NULL) | |
1393 | free (debug->external_opt); | |
1394 | if (debug->external_aux != NULL) | |
1395 | free (debug->external_aux); | |
1396 | if (debug->ss != NULL) | |
1397 | free (debug->ss); | |
1398 | if (debug->ssext != NULL) | |
1399 | free (debug->ssext); | |
1400 | if (debug->external_fdr != NULL) | |
1401 | free (debug->external_fdr); | |
1402 | if (debug->external_rfd != NULL) | |
1403 | free (debug->external_rfd); | |
1404 | if (debug->external_ext != NULL) | |
1405 | free (debug->external_ext); | |
1406 | return FALSE; | |
252b5132 RH |
1407 | } |
1408 | ||
a7519a3c RH |
1409 | /* Alpha ELF local labels start with '$'. */ |
1410 | ||
b34976b6 | 1411 | static bfd_boolean |
a7519a3c | 1412 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1413 | { |
a7519a3c RH |
1414 | return name[0] == '$'; |
1415 | } | |
9e756d64 | 1416 | |
a7519a3c RH |
1417 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1418 | routine in order to handle the ECOFF debugging information. We | |
1419 | still call this mips_elf_find_line because of the slot | |
1420 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1421 | |
a7519a3c RH |
1422 | struct mips_elf_find_line |
1423 | { | |
1424 | struct ecoff_debug_info d; | |
1425 | struct ecoff_find_line i; | |
1426 | }; | |
d6ad34f6 | 1427 | |
a7519a3c RH |
1428 | static bfd_boolean |
1429 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1430 | bfd_vma offset, const char **filename_ptr, | |
1431 | const char **functionname_ptr, | |
1432 | unsigned int *line_ptr) | |
1433 | { | |
1434 | asection *msec; | |
252b5132 | 1435 | |
a7519a3c RH |
1436 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1437 | filename_ptr, functionname_ptr, | |
1438 | line_ptr, 0, | |
1439 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1440 | return TRUE; |
9e756d64 | 1441 | |
a7519a3c RH |
1442 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1443 | if (msec != NULL) | |
1bbc9cec | 1444 | { |
a7519a3c RH |
1445 | flagword origflags; |
1446 | struct mips_elf_find_line *fi; | |
1447 | const struct ecoff_debug_swap * const swap = | |
1448 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1449 | |
a7519a3c RH |
1450 | /* If we are called during a link, alpha_elf_final_link may have |
1451 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1452 | if appropriate (which it normally will be). */ | |
1453 | origflags = msec->flags; | |
1454 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1455 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1456 | |
a7519a3c RH |
1457 | fi = elf_tdata (abfd)->find_line_info; |
1458 | if (fi == NULL) | |
1459 | { | |
1460 | bfd_size_type external_fdr_size; | |
1461 | char *fraw_src; | |
1462 | char *fraw_end; | |
1463 | struct fdr *fdr_ptr; | |
1464 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1465 | |
a7519a3c RH |
1466 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1467 | if (fi == NULL) | |
1468 | { | |
1469 | msec->flags = origflags; | |
1470 | return FALSE; | |
1471 | } | |
9e756d64 | 1472 | |
a7519a3c RH |
1473 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1474 | { | |
1475 | msec->flags = origflags; | |
1476 | return FALSE; | |
1477 | } | |
9e756d64 | 1478 | |
a7519a3c RH |
1479 | /* Swap in the FDR information. */ |
1480 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1481 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1482 | if (fi->d.fdr == NULL) | |
1483 | { | |
1484 | msec->flags = origflags; | |
1485 | return FALSE; | |
1486 | } | |
1487 | external_fdr_size = swap->external_fdr_size; | |
1488 | fdr_ptr = fi->d.fdr; | |
1489 | fraw_src = (char *) fi->d.external_fdr; | |
1490 | fraw_end = (fraw_src | |
1491 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1492 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1493 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1494 | |
a7519a3c | 1495 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1496 | |
a7519a3c RH |
1497 | /* Note that we don't bother to ever free this information. |
1498 | find_nearest_line is either called all the time, as in | |
1499 | objdump -l, so the information should be saved, or it is | |
1500 | rarely called, as in ld error messages, so the memory | |
1501 | wasted is unimportant. Still, it would probably be a | |
1502 | good idea for free_cached_info to throw it away. */ | |
1503 | } | |
9e756d64 | 1504 | |
a7519a3c RH |
1505 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1506 | &fi->i, filename_ptr, functionname_ptr, | |
1507 | line_ptr)) | |
1508 | { | |
1509 | msec->flags = origflags; | |
1510 | return TRUE; | |
1511 | } | |
9e756d64 | 1512 | |
a7519a3c | 1513 | msec->flags = origflags; |
9e756d64 | 1514 | } |
9e756d64 | 1515 | |
a7519a3c | 1516 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1517 | |
a7519a3c RH |
1518 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1519 | filename_ptr, functionname_ptr, | |
1520 | line_ptr); | |
9e756d64 | 1521 | } |
a7519a3c RH |
1522 | \f |
1523 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1524 | |
a7519a3c | 1525 | struct extsym_info |
9e756d64 | 1526 | { |
a7519a3c RH |
1527 | bfd *abfd; |
1528 | struct bfd_link_info *info; | |
1529 | struct ecoff_debug_info *debug; | |
1530 | const struct ecoff_debug_swap *swap; | |
1531 | bfd_boolean failed; | |
1532 | }; | |
9e756d64 | 1533 | |
a7519a3c RH |
1534 | static bfd_boolean |
1535 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1536 | { | |
1537 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1538 | bfd_boolean strip; | |
1539 | asection *sec, *output_section; | |
9e756d64 | 1540 | |
a7519a3c RH |
1541 | if (h->root.root.type == bfd_link_hash_warning) |
1542 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1543 | |
a7519a3c RH |
1544 | if (h->root.indx == -2) |
1545 | strip = FALSE; | |
1546 | else if ((h->root.def_dynamic | |
1547 | || h->root.ref_dynamic | |
1548 | || h->root.root.type == bfd_link_hash_new) | |
1549 | && !h->root.def_regular | |
1550 | && !h->root.ref_regular) | |
1551 | strip = TRUE; | |
1552 | else if (einfo->info->strip == strip_all | |
1553 | || (einfo->info->strip == strip_some | |
1554 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1555 | h->root.root.root.string, | |
1556 | FALSE, FALSE) == NULL)) | |
1557 | strip = TRUE; | |
1558 | else | |
1559 | strip = FALSE; | |
9e756d64 | 1560 | |
a7519a3c | 1561 | if (strip) |
b34976b6 | 1562 | return TRUE; |
9e756d64 | 1563 | |
a7519a3c | 1564 | if (h->esym.ifd == -2) |
9e756d64 | 1565 | { |
a7519a3c RH |
1566 | h->esym.jmptbl = 0; |
1567 | h->esym.cobol_main = 0; | |
1568 | h->esym.weakext = 0; | |
1569 | h->esym.reserved = 0; | |
1570 | h->esym.ifd = ifdNil; | |
1571 | h->esym.asym.value = 0; | |
1572 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1573 | |
a7519a3c RH |
1574 | if (h->root.root.type != bfd_link_hash_defined |
1575 | && h->root.root.type != bfd_link_hash_defweak) | |
1576 | h->esym.asym.sc = scAbs; | |
1577 | else | |
1578 | { | |
1579 | const char *name; | |
9e756d64 | 1580 | |
a7519a3c RH |
1581 | sec = h->root.root.u.def.section; |
1582 | output_section = sec->output_section; | |
9e756d64 | 1583 | |
a7519a3c RH |
1584 | /* When making a shared library and symbol h is the one from |
1585 | the another shared library, OUTPUT_SECTION may be null. */ | |
1586 | if (output_section == NULL) | |
1587 | h->esym.asym.sc = scUndefined; | |
1588 | else | |
1589 | { | |
1590 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1591 | |
a7519a3c RH |
1592 | if (strcmp (name, ".text") == 0) |
1593 | h->esym.asym.sc = scText; | |
1594 | else if (strcmp (name, ".data") == 0) | |
1595 | h->esym.asym.sc = scData; | |
1596 | else if (strcmp (name, ".sdata") == 0) | |
1597 | h->esym.asym.sc = scSData; | |
1598 | else if (strcmp (name, ".rodata") == 0 | |
1599 | || strcmp (name, ".rdata") == 0) | |
1600 | h->esym.asym.sc = scRData; | |
1601 | else if (strcmp (name, ".bss") == 0) | |
1602 | h->esym.asym.sc = scBss; | |
1603 | else if (strcmp (name, ".sbss") == 0) | |
1604 | h->esym.asym.sc = scSBss; | |
1605 | else if (strcmp (name, ".init") == 0) | |
1606 | h->esym.asym.sc = scInit; | |
1607 | else if (strcmp (name, ".fini") == 0) | |
1608 | h->esym.asym.sc = scFini; | |
1609 | else | |
1610 | h->esym.asym.sc = scAbs; | |
1611 | } | |
1612 | } | |
9e756d64 | 1613 | |
a7519a3c RH |
1614 | h->esym.asym.reserved = 0; |
1615 | h->esym.asym.index = indexNil; | |
1616 | } | |
9e756d64 | 1617 | |
a7519a3c RH |
1618 | if (h->root.root.type == bfd_link_hash_common) |
1619 | h->esym.asym.value = h->root.root.u.c.size; | |
1620 | else if (h->root.root.type == bfd_link_hash_defined | |
1621 | || h->root.root.type == bfd_link_hash_defweak) | |
1622 | { | |
1623 | if (h->esym.asym.sc == scCommon) | |
1624 | h->esym.asym.sc = scBss; | |
1625 | else if (h->esym.asym.sc == scSCommon) | |
1626 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1627 | |
a7519a3c RH |
1628 | sec = h->root.root.u.def.section; |
1629 | output_section = sec->output_section; | |
1630 | if (output_section != NULL) | |
1631 | h->esym.asym.value = (h->root.root.u.def.value | |
1632 | + sec->output_offset | |
1633 | + output_section->vma); | |
1634 | else | |
1635 | h->esym.asym.value = 0; | |
1636 | } | |
9e756d64 | 1637 | |
a7519a3c RH |
1638 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1639 | h->root.root.root.string, | |
1640 | &h->esym)) | |
1641 | { | |
1642 | einfo->failed = TRUE; | |
1643 | return FALSE; | |
9e756d64 RH |
1644 | } |
1645 | ||
a7519a3c RH |
1646 | return TRUE; |
1647 | } | |
1648 | \f | |
1649 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1650 | |
a7519a3c RH |
1651 | static struct alpha_elf_got_entry * |
1652 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1653 | unsigned long r_type, unsigned long r_symndx, | |
1654 | bfd_vma r_addend) | |
1655 | { | |
1656 | struct alpha_elf_got_entry *gotent; | |
1657 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1658 | |
a7519a3c RH |
1659 | if (h) |
1660 | slot = &h->got_entries; | |
1661 | else | |
1662 | { | |
1663 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1664 | |
a7519a3c | 1665 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1666 | |
a7519a3c RH |
1667 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1668 | if (!local_got_entries) | |
1669 | { | |
1670 | bfd_size_type size; | |
1671 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1672 | |
a7519a3c RH |
1673 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1674 | size = symtab_hdr->sh_info; | |
1675 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1676 | |
a7519a3c RH |
1677 | local_got_entries |
1678 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1679 | if (!local_got_entries) | |
1680 | return NULL; | |
1681 | ||
1682 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1683 | } | |
1684 | ||
1685 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1686 | } |
1687 | ||
a7519a3c RH |
1688 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1689 | if (gotent->gotobj == abfd | |
1690 | && gotent->reloc_type == r_type | |
1691 | && gotent->addend == r_addend) | |
1692 | break; | |
1693 | ||
1694 | if (!gotent) | |
9e756d64 | 1695 | { |
a7519a3c RH |
1696 | int entry_size; |
1697 | bfd_size_type amt; | |
9e756d64 | 1698 | |
a7519a3c RH |
1699 | amt = sizeof (struct alpha_elf_got_entry); |
1700 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1701 | if (!gotent) | |
1702 | return NULL; | |
9e756d64 | 1703 | |
a7519a3c RH |
1704 | gotent->gotobj = abfd; |
1705 | gotent->addend = r_addend; | |
1706 | gotent->got_offset = -1; | |
6ec7057a | 1707 | gotent->plt_offset = -1; |
a7519a3c RH |
1708 | gotent->use_count = 1; |
1709 | gotent->reloc_type = r_type; | |
1710 | gotent->reloc_done = 0; | |
1711 | gotent->reloc_xlated = 0; | |
9e756d64 | 1712 | |
a7519a3c RH |
1713 | gotent->next = *slot; |
1714 | *slot = gotent; | |
9e756d64 | 1715 | |
a7519a3c RH |
1716 | entry_size = alpha_got_entry_size (r_type); |
1717 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1718 | if (!h) | |
1719 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1720 | } |
a7519a3c RH |
1721 | else |
1722 | gotent->use_count += 1; | |
9e756d64 | 1723 | |
a7519a3c | 1724 | return gotent; |
9e756d64 RH |
1725 | } |
1726 | ||
6ec7057a RH |
1727 | static bfd_boolean |
1728 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1729 | { | |
1730 | return ((ah->root.type == STT_FUNC | |
1731 | || ah->root.root.type == bfd_link_hash_undefweak | |
1732 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1733 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1734 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1735 | } |
1736 | ||
a7519a3c RH |
1737 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1738 | ||
b34976b6 | 1739 | static bfd_boolean |
a7519a3c RH |
1740 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1741 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1742 | { |
a7519a3c RH |
1743 | bfd *dynobj; |
1744 | asection *sreloc; | |
1745 | const char *rel_sec_name; | |
252b5132 | 1746 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1747 | struct alpha_elf_link_hash_entry **sym_hashes; |
1748 | const Elf_Internal_Rela *rel, *relend; | |
1749 | bfd_boolean got_created; | |
1750 | bfd_size_type amt; | |
252b5132 | 1751 | |
a7519a3c RH |
1752 | if (info->relocatable) |
1753 | return TRUE; | |
252b5132 | 1754 | |
a7519a3c RH |
1755 | /* Don't do anything special with non-loaded, non-alloced sections. |
1756 | In particular, any relocs in such sections should not affect GOT | |
1757 | and PLT reference counting (ie. we don't allow them to create GOT | |
1758 | or PLT entries), there's no possibility or desire to optimize TLS | |
1759 | relocs, and there's not much point in propagating relocs to shared | |
1760 | libs that the dynamic linker won't relocate. */ | |
1761 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1762 | return TRUE; |
252b5132 | 1763 | |
a7519a3c RH |
1764 | dynobj = elf_hash_table(info)->dynobj; |
1765 | if (dynobj == NULL) | |
1766 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
252b5132 | 1767 | |
a7519a3c RH |
1768 | sreloc = NULL; |
1769 | rel_sec_name = NULL; | |
1770 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1771 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
1772 | got_created = FALSE; | |
1773 | ||
1774 | relend = relocs + sec->reloc_count; | |
1775 | for (rel = relocs; rel < relend; ++rel) | |
1776 | { | |
1777 | enum { | |
1778 | NEED_GOT = 1, | |
1779 | NEED_GOT_ENTRY = 2, | |
1780 | NEED_DYNREL = 4 | |
1781 | }; | |
1782 | ||
1783 | unsigned long r_symndx, r_type; | |
1784 | struct alpha_elf_link_hash_entry *h; | |
1785 | unsigned int gotent_flags; | |
1786 | bfd_boolean maybe_dynamic; | |
1787 | unsigned int need; | |
1788 | bfd_vma addend; | |
1789 | ||
1790 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1791 | if (r_symndx < symtab_hdr->sh_info) | |
1792 | h = NULL; | |
1793 | else | |
1794 | { | |
1795 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1796 | |
a7519a3c RH |
1797 | while (h->root.root.type == bfd_link_hash_indirect |
1798 | || h->root.root.type == bfd_link_hash_warning) | |
1799 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1800 | |
a7519a3c RH |
1801 | h->root.ref_regular = 1; |
1802 | } | |
252b5132 | 1803 | |
a7519a3c RH |
1804 | /* We can only get preliminary data on whether a symbol is |
1805 | locally or externally defined, as not all of the input files | |
1806 | have yet been processed. Do something with what we know, as | |
1807 | this may help reduce memory usage and processing time later. */ | |
1808 | maybe_dynamic = FALSE; | |
1809 | if (h && ((info->shared | |
1810 | && (!info->symbolic | |
1811 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1812 | || !h->root.def_regular | |
1813 | || h->root.root.type == bfd_link_hash_defweak)) | |
1814 | maybe_dynamic = TRUE; | |
252b5132 | 1815 | |
a7519a3c RH |
1816 | need = 0; |
1817 | gotent_flags = 0; | |
1818 | r_type = ELF64_R_TYPE (rel->r_info); | |
1819 | addend = rel->r_addend; | |
9e756d64 | 1820 | |
9e756d64 RH |
1821 | switch (r_type) |
1822 | { | |
1823 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1824 | need = NEED_GOT | NEED_GOT_ENTRY; |
1825 | ||
1826 | /* Remember how this literal is used from its LITUSEs. | |
1827 | This will be important when it comes to decide if we can | |
1828 | create a .plt entry for a function symbol. */ | |
1829 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1830 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1831 | gotent_flags |= 1 << rel->r_addend; |
1832 | --rel; | |
1833 | ||
1834 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1835 | if (gotent_flags == 0) | |
1836 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1837 | break; | |
1838 | ||
1839 | case R_ALPHA_GPDISP: | |
1840 | case R_ALPHA_GPREL16: | |
1841 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1842 | case R_ALPHA_GPRELHIGH: |
1843 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1844 | case R_ALPHA_BRSGP: |
1845 | need = NEED_GOT; | |
1846 | break; | |
1847 | ||
1848 | case R_ALPHA_REFLONG: | |
1849 | case R_ALPHA_REFQUAD: | |
1850 | if (info->shared || maybe_dynamic) | |
1851 | need = NEED_DYNREL; | |
cc03ec80 RH |
1852 | break; |
1853 | ||
9e756d64 | 1854 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1855 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1856 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1857 | r_symndx = 0; |
a7519a3c RH |
1858 | h = 0; |
1859 | maybe_dynamic = FALSE; | |
1860 | /* FALLTHRU */ | |
1861 | ||
1862 | case R_ALPHA_TLSGD: | |
1863 | case R_ALPHA_GOTDTPREL: | |
1864 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1865 | break; |
cc03ec80 | 1866 | |
a7519a3c RH |
1867 | case R_ALPHA_GOTTPREL: |
1868 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1869 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1870 | if (info->shared) | |
1871 | info->flags |= DF_STATIC_TLS; | |
1872 | break; | |
1873 | ||
1874 | case R_ALPHA_TPREL64: | |
1875 | if (info->shared || maybe_dynamic) | |
1876 | need = NEED_DYNREL; | |
1877 | if (info->shared) | |
1878 | info->flags |= DF_STATIC_TLS; | |
1879 | break; | |
252b5132 RH |
1880 | } |
1881 | ||
a7519a3c | 1882 | if (need & NEED_GOT) |
252b5132 | 1883 | { |
a7519a3c | 1884 | if (!got_created) |
6cdc0ccc | 1885 | { |
a7519a3c RH |
1886 | if (!elf64_alpha_create_got_section (abfd, info)) |
1887 | return FALSE; | |
cc03ec80 | 1888 | |
a7519a3c RH |
1889 | /* Make sure the object's gotobj is set to itself so |
1890 | that we default to every object with its own .got. | |
1891 | We'll merge .gots later once we've collected each | |
1892 | object's info. */ | |
1893 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
252b5132 | 1894 | |
a7519a3c | 1895 | got_created = 1; |
c328dc3f | 1896 | } |
252b5132 | 1897 | } |
252b5132 | 1898 | |
a7519a3c RH |
1899 | if (need & NEED_GOT_ENTRY) |
1900 | { | |
1901 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1902 | |
a7519a3c RH |
1903 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1904 | if (!gotent) | |
1905 | return FALSE; | |
4a67a098 | 1906 | |
a7519a3c | 1907 | if (gotent_flags) |
cc03ec80 | 1908 | { |
a7519a3c RH |
1909 | gotent->flags |= gotent_flags; |
1910 | if (h) | |
1911 | { | |
1912 | gotent_flags |= h->flags; | |
1913 | h->flags = gotent_flags; | |
4a67a098 | 1914 | |
a7519a3c | 1915 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1916 | /* ??? It appears that we won't make it into |
1917 | adjust_dynamic_symbol for symbols that remain | |
1918 | totally undefined. Copying this check here means | |
1919 | we can create a plt entry for them too. */ | |
1920 | h->root.needs_plt | |
1921 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1922 | } | |
a7519a3c | 1923 | } |
252b5132 RH |
1924 | } |
1925 | ||
a7519a3c | 1926 | if (need & NEED_DYNREL) |
9e756d64 | 1927 | { |
a7519a3c | 1928 | if (rel_sec_name == NULL) |
9e756d64 | 1929 | { |
a7519a3c RH |
1930 | rel_sec_name = (bfd_elf_string_from_elf_section |
1931 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1932 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1933 | if (rel_sec_name == NULL) | |
1934 | return FALSE; | |
1935 | ||
1936 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1937 | && strcmp (bfd_get_section_name (abfd, sec), | |
1938 | rel_sec_name+5) == 0); | |
9e756d64 | 1939 | } |
a7519a3c RH |
1940 | |
1941 | /* We need to create the section here now whether we eventually | |
1942 | use it or not so that it gets mapped to an output section by | |
1943 | the linker. If not used, we'll kill it in | |
1944 | size_dynamic_sections. */ | |
1945 | if (sreloc == NULL) | |
9e756d64 | 1946 | { |
a7519a3c RH |
1947 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
1948 | if (sreloc == NULL) | |
1949 | { | |
1950 | flagword flags; | |
1951 | ||
1952 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1953 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1954 | if (sec->flags & SEC_ALLOC) | |
1955 | flags |= SEC_ALLOC | SEC_LOAD; | |
1956 | sreloc = bfd_make_section_with_flags (dynobj, | |
1957 | rel_sec_name, | |
1958 | flags); | |
1959 | if (sreloc == NULL | |
1960 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1961 | return FALSE; | |
1962 | } | |
9e756d64 | 1963 | } |
252b5132 | 1964 | |
a7519a3c RH |
1965 | if (h) |
1966 | { | |
1967 | /* Since we havn't seen all of the input symbols yet, we | |
1968 | don't know whether we'll actually need a dynamic relocation | |
1969 | entry for this reloc. So make a record of it. Once we | |
1970 | find out if this thing needs dynamic relocation we'll | |
1971 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1972 | |
a7519a3c | 1973 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1974 | |
a7519a3c RH |
1975 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1976 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1977 | break; | |
252b5132 | 1978 | |
a7519a3c RH |
1979 | if (!rent) |
1980 | { | |
1981 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1982 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1983 | if (!rent) | |
1984 | return FALSE; | |
252b5132 | 1985 | |
a7519a3c RH |
1986 | rent->srel = sreloc; |
1987 | rent->rtype = r_type; | |
1988 | rent->count = 1; | |
1989 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1990 | |
a7519a3c RH |
1991 | rent->next = h->reloc_entries; |
1992 | h->reloc_entries = rent; | |
1993 | } | |
1994 | else | |
1995 | rent->count++; | |
1996 | } | |
1997 | else if (info->shared) | |
1998 | { | |
1999 | /* If this is a shared library, and the section is to be | |
2000 | loaded into memory, we need a RELATIVE reloc. */ | |
2001 | sreloc->size += sizeof (Elf64_External_Rela); | |
2002 | if (sec->flags & SEC_READONLY) | |
2003 | info->flags |= DF_TEXTREL; | |
2004 | } | |
252b5132 RH |
2005 | } |
2006 | } | |
2007 | ||
b34976b6 | 2008 | return TRUE; |
252b5132 | 2009 | } |
252b5132 | 2010 | |
a7519a3c RH |
2011 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2012 | regular object. The current definition is in some section of the | |
2013 | dynamic object, but we're not including those sections. We have to | |
2014 | change the definition to something the rest of the link can | |
2015 | understand. */ | |
252b5132 | 2016 | |
b34976b6 | 2017 | static bfd_boolean |
a7519a3c RH |
2018 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
2019 | struct elf_link_hash_entry *h) | |
252b5132 | 2020 | { |
a7519a3c RH |
2021 | bfd *dynobj; |
2022 | asection *s; | |
2023 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 2024 | |
a7519a3c RH |
2025 | dynobj = elf_hash_table(info)->dynobj; |
2026 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 2027 | |
a7519a3c | 2028 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2029 | about whether this symbol should get a .plt entry. Irritatingly, it |
2030 | is common for folk to leave undefined symbols in shared libraries, | |
2031 | and they still expect lazy binding; accept undefined symbols in lieu | |
2032 | of STT_FUNC. */ | |
2033 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2034 | { |
6ec7057a | 2035 | h->needs_plt = TRUE; |
252b5132 | 2036 | |
a7519a3c RH |
2037 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2038 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2039 | return FALSE; | |
204692d7 | 2040 | |
6ec7057a RH |
2041 | /* We need one plt entry per got subsection. Delay allocation of |
2042 | the actual plt entries until size_plt_section, called from | |
2043 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2044 | |
a7519a3c RH |
2045 | return TRUE; |
2046 | } | |
2047 | else | |
6ec7057a | 2048 | h->needs_plt = FALSE; |
252b5132 | 2049 | |
a7519a3c RH |
2050 | /* If this is a weak symbol, and there is a real definition, the |
2051 | processor independent code will have arranged for us to see the | |
2052 | real definition first, and we can just use the same value. */ | |
2053 | if (h->u.weakdef != NULL) | |
252b5132 | 2054 | { |
a7519a3c RH |
2055 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2056 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2057 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2058 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2059 | return TRUE; | |
252b5132 | 2060 | } |
a7519a3c RH |
2061 | |
2062 | /* This is a reference to a symbol defined by a dynamic object which | |
2063 | is not a function. The Alpha, since it uses .got entries for all | |
2064 | symbols even in regular objects, does not need the hackery of a | |
2065 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2066 | |
b34976b6 | 2067 | return TRUE; |
252b5132 RH |
2068 | } |
2069 | ||
a7519a3c RH |
2070 | /* Symbol versioning can create new symbols, and make our old symbols |
2071 | indirect to the new ones. Consolidate the got and reloc information | |
2072 | in these situations. */ | |
252b5132 | 2073 | |
b34976b6 | 2074 | static bfd_boolean |
a7519a3c RH |
2075 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2076 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2077 | { |
a7519a3c | 2078 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2079 | |
a7519a3c RH |
2080 | if (hi->root.root.type != bfd_link_hash_indirect) |
2081 | return TRUE; | |
2082 | hs = hi; | |
2083 | do { | |
2084 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2085 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2086 | |
a7519a3c RH |
2087 | /* Merge the flags. Whee. */ |
2088 | ||
2089 | hs->flags |= hi->flags; | |
2090 | ||
2091 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2092 | doing so, since we don't need it anymore. */ | |
2093 | ||
2094 | if (hs->got_entries == NULL) | |
2095 | hs->got_entries = hi->got_entries; | |
2096 | else | |
2097 | { | |
2098 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2099 | ||
2100 | gsh = hs->got_entries; | |
2101 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2102 | { |
a7519a3c RH |
2103 | gin = gi->next; |
2104 | for (gs = gsh; gs ; gs = gs->next) | |
2105 | if (gi->gotobj == gs->gotobj | |
2106 | && gi->reloc_type == gs->reloc_type | |
2107 | && gi->addend == gs->addend) | |
2108 | { | |
2109 | gi->use_count += gs->use_count; | |
2110 | goto got_found; | |
2111 | } | |
2112 | gi->next = hs->got_entries; | |
2113 | hs->got_entries = gi; | |
2114 | got_found:; | |
252b5132 | 2115 | } |
a7519a3c RH |
2116 | } |
2117 | hi->got_entries = NULL; | |
252b5132 | 2118 | |
a7519a3c RH |
2119 | /* And similar for the reloc entries. */ |
2120 | ||
2121 | if (hs->reloc_entries == NULL) | |
2122 | hs->reloc_entries = hi->reloc_entries; | |
2123 | else | |
2124 | { | |
2125 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2126 | ||
2127 | rsh = hs->reloc_entries; | |
2128 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2129 | { | |
2130 | rin = ri->next; | |
2131 | for (rs = rsh; rs ; rs = rs->next) | |
2132 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2133 | { | |
2134 | rs->count += ri->count; | |
2135 | goto found_reloc; | |
2136 | } | |
2137 | ri->next = hs->reloc_entries; | |
2138 | hs->reloc_entries = ri; | |
2139 | found_reloc:; | |
2140 | } | |
252b5132 | 2141 | } |
a7519a3c | 2142 | hi->reloc_entries = NULL; |
252b5132 | 2143 | |
b34976b6 | 2144 | return TRUE; |
252b5132 RH |
2145 | } |
2146 | ||
a7519a3c | 2147 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2148 | |
b34976b6 | 2149 | static bfd_boolean |
a7519a3c | 2150 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2151 | { |
a7519a3c RH |
2152 | int total = alpha_elf_tdata (a)->total_got_size; |
2153 | bfd *bsub; | |
252b5132 | 2154 | |
a7519a3c RH |
2155 | /* Trivial quick fallout test. */ |
2156 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2157 | return TRUE; | |
252b5132 | 2158 | |
a7519a3c RH |
2159 | /* By their nature, local .got entries cannot be merged. */ |
2160 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2161 | return FALSE; |
252b5132 | 2162 | |
a7519a3c RH |
2163 | /* Failing the common trivial comparison, we must effectively |
2164 | perform the merge. Not actually performing the merge means that | |
2165 | we don't have to store undo information in case we fail. */ | |
2166 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2167 | { | |
2168 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2169 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2170 | int i, n; | |
2171 | ||
2172 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2173 | for (i = 0; i < n; ++i) | |
2174 | { | |
2175 | struct alpha_elf_got_entry *ae, *be; | |
2176 | struct alpha_elf_link_hash_entry *h; | |
2177 | ||
2178 | h = hashes[i]; | |
2179 | while (h->root.root.type == bfd_link_hash_indirect | |
2180 | || h->root.root.type == bfd_link_hash_warning) | |
2181 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2182 | ||
2183 | for (be = h->got_entries; be ; be = be->next) | |
2184 | { | |
2185 | if (be->use_count == 0) | |
2186 | continue; | |
2187 | if (be->gotobj != b) | |
2188 | continue; | |
2189 | ||
2190 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2191 | if (ae->gotobj == a | |
2192 | && ae->reloc_type == be->reloc_type | |
2193 | && ae->addend == be->addend) | |
2194 | goto global_found; | |
2195 | ||
2196 | total += alpha_got_entry_size (be->reloc_type); | |
2197 | if (total > MAX_GOT_SIZE) | |
2198 | return FALSE; | |
2199 | global_found:; | |
2200 | } | |
2201 | } | |
2202 | } | |
252b5132 | 2203 | |
b34976b6 | 2204 | return TRUE; |
252b5132 RH |
2205 | } |
2206 | ||
a7519a3c | 2207 | /* Actually merge two .got tables. */ |
252b5132 | 2208 | |
a7519a3c RH |
2209 | static void |
2210 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2211 | { |
a7519a3c RH |
2212 | int total = alpha_elf_tdata (a)->total_got_size; |
2213 | bfd *bsub; | |
252b5132 | 2214 | |
a7519a3c RH |
2215 | /* Remember local expansion. */ |
2216 | { | |
2217 | int e = alpha_elf_tdata (b)->local_got_size; | |
2218 | total += e; | |
2219 | alpha_elf_tdata (a)->local_got_size += e; | |
2220 | } | |
252b5132 | 2221 | |
a7519a3c RH |
2222 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2223 | { | |
2224 | struct alpha_elf_got_entry **local_got_entries; | |
2225 | struct alpha_elf_link_hash_entry **hashes; | |
2226 | Elf_Internal_Shdr *symtab_hdr; | |
2227 | int i, n; | |
252b5132 | 2228 | |
a7519a3c RH |
2229 | /* Let the local .got entries know they are part of a new subsegment. */ |
2230 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2231 | if (local_got_entries) | |
2232 | { | |
2233 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2234 | for (i = 0; i < n; ++i) | |
2235 | { | |
2236 | struct alpha_elf_got_entry *ent; | |
2237 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2238 | ent->gotobj = a; | |
2239 | } | |
2240 | } | |
252b5132 | 2241 | |
a7519a3c RH |
2242 | /* Merge the global .got entries. */ |
2243 | hashes = alpha_elf_sym_hashes (bsub); | |
2244 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2245 | |
a7519a3c RH |
2246 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2247 | for (i = 0; i < n; ++i) | |
2248 | { | |
2249 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2250 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2251 | |
a7519a3c RH |
2252 | h = hashes[i]; |
2253 | while (h->root.root.type == bfd_link_hash_indirect | |
2254 | || h->root.root.type == bfd_link_hash_warning) | |
2255 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2256 | |
a7519a3c RH |
2257 | pbe = start = &h->got_entries; |
2258 | while ((be = *pbe) != NULL) | |
2259 | { | |
2260 | if (be->use_count == 0) | |
2261 | { | |
2262 | *pbe = be->next; | |
2263 | memset (be, 0xa5, sizeof (*be)); | |
2264 | goto kill; | |
2265 | } | |
2266 | if (be->gotobj != b) | |
2267 | goto next; | |
2268 | ||
2269 | for (ae = *start; ae ; ae = ae->next) | |
2270 | if (ae->gotobj == a | |
2271 | && ae->reloc_type == be->reloc_type | |
2272 | && ae->addend == be->addend) | |
2273 | { | |
2274 | ae->flags |= be->flags; | |
2275 | ae->use_count += be->use_count; | |
2276 | *pbe = be->next; | |
2277 | memset (be, 0xa5, sizeof (*be)); | |
2278 | goto kill; | |
2279 | } | |
2280 | be->gotobj = a; | |
2281 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2282 | |
a7519a3c RH |
2283 | next:; |
2284 | pbe = &be->next; | |
2285 | kill:; | |
2286 | } | |
2287 | } | |
252b5132 | 2288 | |
a7519a3c RH |
2289 | alpha_elf_tdata (bsub)->gotobj = a; |
2290 | } | |
2291 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2292 | |
a7519a3c RH |
2293 | /* Merge the two in_got chains. */ |
2294 | { | |
2295 | bfd *next; | |
252b5132 | 2296 | |
a7519a3c RH |
2297 | bsub = a; |
2298 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2299 | bsub = next; | |
252b5132 | 2300 | |
a7519a3c RH |
2301 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2302 | } | |
252b5132 | 2303 | } |
a7519a3c RH |
2304 | |
2305 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2306 | |
b34976b6 | 2307 | static bfd_boolean |
a7519a3c RH |
2308 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2309 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2310 | { |
a7519a3c | 2311 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2312 | |
a7519a3c RH |
2313 | if (h->root.root.type == bfd_link_hash_warning) |
2314 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2315 | |
a7519a3c RH |
2316 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2317 | if (gotent->use_count > 0) | |
2318 | { | |
2319 | struct alpha_elf_obj_tdata *td; | |
2320 | bfd_size_type *plge; | |
252b5132 | 2321 | |
a7519a3c | 2322 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2323 | plge = &td->got->size; |
2324 | gotent->got_offset = *plge; | |
2325 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2326 | } | |
252b5132 | 2327 | |
6ec7057a | 2328 | return TRUE; |
a7519a3c | 2329 | } |
252b5132 | 2330 | |
a7519a3c RH |
2331 | static void |
2332 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2333 | { | |
2334 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
252b5132 | 2335 | |
a7519a3c RH |
2336 | /* First, zero out the .got sizes, as we may be recalculating the |
2337 | .got after optimizing it. */ | |
2338 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2339 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2340 | |
a7519a3c RH |
2341 | /* Next, fill in the offsets for all the global entries. */ |
2342 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2343 | elf64_alpha_calc_got_offsets_for_symbol, | |
2344 | NULL); | |
252b5132 | 2345 | |
a7519a3c RH |
2346 | /* Finally, fill in the offsets for the local entries. */ |
2347 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2348 | { | |
2349 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2350 | bfd *j; | |
252b5132 | 2351 | |
a7519a3c RH |
2352 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2353 | { | |
2354 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2355 | int k, n; | |
252b5132 | 2356 | |
a7519a3c RH |
2357 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2358 | if (!local_got_entries) | |
2359 | continue; | |
252b5132 | 2360 | |
a7519a3c RH |
2361 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2362 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2363 | if (gotent->use_count > 0) | |
2364 | { | |
2365 | gotent->got_offset = got_offset; | |
2366 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2367 | } | |
2368 | } | |
252b5132 | 2369 | |
a7519a3c RH |
2370 | alpha_elf_tdata(i)->got->size = got_offset; |
2371 | } | |
2372 | } | |
252b5132 | 2373 | |
a7519a3c | 2374 | /* Constructs the gots. */ |
252b5132 | 2375 | |
b34976b6 | 2376 | static bfd_boolean |
a7519a3c | 2377 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2378 | { |
a7519a3c RH |
2379 | bfd *i, *got_list, *cur_got_obj = NULL; |
2380 | int something_changed = 0; | |
252b5132 | 2381 | |
a7519a3c | 2382 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2383 | |
a7519a3c RH |
2384 | /* On the first time through, pretend we have an existing got list |
2385 | consisting of all of the input files. */ | |
2386 | if (got_list == NULL) | |
252b5132 | 2387 | { |
a7519a3c | 2388 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2389 | { |
a7519a3c RH |
2390 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2391 | if (this_got == NULL) | |
2392 | continue; | |
252b5132 | 2393 | |
a7519a3c RH |
2394 | /* We are assuming no merging has yet occurred. */ |
2395 | BFD_ASSERT (this_got == i); | |
252b5132 | 2396 | |
a7519a3c | 2397 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2398 | { |
a7519a3c RH |
2399 | /* Yikes! A single object file has too many entries. */ |
2400 | (*_bfd_error_handler) | |
2401 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2402 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2403 | return FALSE; |
252b5132 | 2404 | } |
252b5132 | 2405 | |
a7519a3c RH |
2406 | if (got_list == NULL) |
2407 | got_list = this_got; | |
2408 | else | |
2409 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2410 | cur_got_obj = this_got; | |
252b5132 RH |
2411 | } |
2412 | ||
a7519a3c RH |
2413 | /* Strange degenerate case of no got references. */ |
2414 | if (got_list == NULL) | |
2415 | return TRUE; | |
2416 | ||
2417 | alpha_elf_hash_table (info)->got_list = got_list; | |
2418 | ||
2419 | /* Force got offsets to be recalculated. */ | |
2420 | something_changed = 1; | |
2421 | } | |
2422 | ||
2423 | cur_got_obj = got_list; | |
2424 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2425 | while (i != NULL) | |
2426 | { | |
2427 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2428 | { |
a7519a3c | 2429 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2430 | |
a7519a3c RH |
2431 | alpha_elf_tdata(i)->got->size = 0; |
2432 | i = alpha_elf_tdata(i)->got_link_next; | |
2433 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2434 | ||
2435 | something_changed = 1; | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | cur_got_obj = i; | |
2440 | i = alpha_elf_tdata(i)->got_link_next; | |
2441 | } | |
252b5132 RH |
2442 | } |
2443 | ||
a7519a3c RH |
2444 | /* Once the gots have been merged, fill in the got offsets for |
2445 | everything therein. */ | |
2446 | if (1 || something_changed) | |
2447 | elf64_alpha_calc_got_offsets (info); | |
252b5132 | 2448 | |
a7519a3c | 2449 | return TRUE; |
252b5132 | 2450 | } |
252b5132 | 2451 | |
b34976b6 | 2452 | static bfd_boolean |
a7519a3c | 2453 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2454 | { |
a7519a3c RH |
2455 | asection *splt = (asection *) data; |
2456 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2457 | bfd_boolean saw_one = FALSE; |
252b5132 | 2458 | |
a7519a3c RH |
2459 | /* If we didn't need an entry before, we still don't. */ |
2460 | if (!h->root.needs_plt) | |
2461 | return TRUE; | |
e92d460e | 2462 | |
6ec7057a | 2463 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2464 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2465 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2466 | && gotent->use_count > 0) | |
6ec7057a RH |
2467 | { |
2468 | if (splt->size == 0) | |
2469 | splt->size = PLT_HEADER_SIZE; | |
2470 | gotent->plt_offset = splt->size; | |
2471 | splt->size += PLT_ENTRY_SIZE; | |
2472 | saw_one = TRUE; | |
2473 | } | |
a7519a3c | 2474 | |
6ec7057a RH |
2475 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2476 | if (!saw_one) | |
2477 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2478 | |
2479 | return TRUE; | |
2480 | } | |
2481 | ||
2482 | /* Called from relax_section to rebuild the PLT in light of | |
2483 | potential changes in the function's status. */ | |
2484 | ||
2485 | static bfd_boolean | |
2486 | elf64_alpha_size_plt_section (struct bfd_link_info *info) | |
2487 | { | |
6ec7057a | 2488 | asection *splt, *spltrel, *sgotplt; |
a7519a3c RH |
2489 | unsigned long entries; |
2490 | bfd *dynobj; | |
2491 | ||
2492 | dynobj = elf_hash_table(info)->dynobj; | |
6ec7057a | 2493 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
a7519a3c | 2494 | if (splt == NULL) |
b34976b6 | 2495 | return TRUE; |
252b5132 | 2496 | |
a7519a3c | 2497 | splt->size = 0; |
252b5132 | 2498 | |
a7519a3c RH |
2499 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2500 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2501 | |
a7519a3c RH |
2502 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2503 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2504 | if (splt->size) | |
6ec7057a RH |
2505 | { |
2506 | if (elf64_alpha_use_secureplt) | |
2507 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2508 | else | |
2509 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2510 | } | |
a7519a3c RH |
2511 | else |
2512 | entries = 0; | |
2513 | spltrel->size = entries * sizeof (Elf64_External_Rela); | |
e92d460e | 2514 | |
6ec7057a RH |
2515 | /* When using the secureplt, we need two words somewhere in the data |
2516 | segment for the dynamic linker to tell us where to go. This is the | |
2517 | entire contents of the .got.plt section. */ | |
2518 | if (elf64_alpha_use_secureplt) | |
2519 | { | |
2520 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2521 | sgotplt->size = entries ? 16 : 0; | |
2522 | } | |
2523 | ||
a7519a3c RH |
2524 | return TRUE; |
2525 | } | |
e92d460e | 2526 | |
a7519a3c RH |
2527 | static bfd_boolean |
2528 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2529 | struct bfd_link_info *info) | |
2530 | { | |
2531 | bfd *i; | |
252b5132 | 2532 | |
a7519a3c RH |
2533 | if (info->relocatable) |
2534 | return TRUE; | |
252b5132 | 2535 | |
a7519a3c RH |
2536 | /* First, take care of the indirect symbols created by versioning. */ |
2537 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2538 | elf64_alpha_merge_ind_symbols, | |
2539 | NULL); | |
252b5132 | 2540 | |
a7519a3c RH |
2541 | if (!elf64_alpha_size_got_sections (info)) |
2542 | return FALSE; | |
252b5132 | 2543 | |
a7519a3c RH |
2544 | /* Allocate space for all of the .got subsections. */ |
2545 | i = alpha_elf_hash_table (info)->got_list; | |
2546 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2547 | { |
a7519a3c RH |
2548 | asection *s = alpha_elf_tdata(i)->got; |
2549 | if (s->size > 0) | |
2550 | { | |
2551 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2552 | if (s->contents == NULL) | |
2553 | return FALSE; | |
2554 | } | |
252b5132 RH |
2555 | } |
2556 | ||
b34976b6 | 2557 | return TRUE; |
252b5132 | 2558 | } |
3765b1be | 2559 | |
a7519a3c | 2560 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2561 | |
a7519a3c RH |
2562 | static int |
2563 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2564 | { | |
2565 | switch (r_type) | |
3765b1be | 2566 | { |
a7519a3c RH |
2567 | /* May appear in GOT entries. */ |
2568 | case R_ALPHA_TLSGD: | |
2569 | return (dynamic ? 2 : shared ? 1 : 0); | |
2570 | case R_ALPHA_TLSLDM: | |
2571 | return shared; | |
2572 | case R_ALPHA_LITERAL: | |
2573 | case R_ALPHA_GOTTPREL: | |
2574 | return dynamic || shared; | |
2575 | case R_ALPHA_GOTDTPREL: | |
2576 | return dynamic; | |
3765b1be | 2577 | |
a7519a3c RH |
2578 | /* May appear in data sections. */ |
2579 | case R_ALPHA_REFLONG: | |
2580 | case R_ALPHA_REFQUAD: | |
2581 | case R_ALPHA_TPREL64: | |
2582 | return dynamic || shared; | |
3765b1be | 2583 | |
a7519a3c RH |
2584 | /* Everything else is illegal. We'll issue an error during |
2585 | relocate_section. */ | |
2586 | default: | |
2587 | return 0; | |
2588 | } | |
2589 | } | |
3765b1be | 2590 | |
a7519a3c | 2591 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2592 | |
a7519a3c RH |
2593 | static bfd_boolean |
2594 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2595 | struct bfd_link_info *info) | |
2596 | { | |
2597 | bfd_boolean dynamic; | |
2598 | struct alpha_elf_reloc_entry *relent; | |
2599 | unsigned long entries; | |
3765b1be | 2600 | |
a7519a3c RH |
2601 | if (h->root.root.type == bfd_link_hash_warning) |
2602 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2603 | |
a7519a3c RH |
2604 | /* If the symbol was defined as a common symbol in a regular object |
2605 | file, and there was no definition in any dynamic object, then the | |
2606 | linker will have allocated space for the symbol in a common | |
2607 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2608 | set. This is done for dynamic symbols in | |
2609 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2610 | symbols, somehow. */ | |
2611 | if (!h->root.def_regular | |
2612 | && h->root.ref_regular | |
2613 | && !h->root.def_dynamic | |
2614 | && (h->root.root.type == bfd_link_hash_defined | |
2615 | || h->root.root.type == bfd_link_hash_defweak) | |
2616 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2617 | h->root.def_regular = 1; | |
3765b1be | 2618 | |
a7519a3c RH |
2619 | /* If the symbol is dynamic, we'll need all the relocations in their |
2620 | natural form. If this is a shared object, and it has been forced | |
2621 | local, we'll need the same number of RELATIVE relocations. */ | |
2622 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2623 | |
a7519a3c RH |
2624 | /* If the symbol is a hidden undefined weak, then we never have any |
2625 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2626 | based on info->shared. */ | |
2627 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2628 | return TRUE; | |
2629 | ||
2630 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2631 | { |
a7519a3c RH |
2632 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2633 | info->shared); | |
2634 | if (entries) | |
2635 | { | |
2636 | relent->srel->size += | |
2637 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2638 | if (relent->reltext) | |
2639 | info->flags |= DT_TEXTREL; | |
2640 | } | |
2641 | } | |
3765b1be | 2642 | |
a7519a3c RH |
2643 | return TRUE; |
2644 | } | |
3765b1be | 2645 | |
a7519a3c RH |
2646 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2647 | global symbols. */ | |
3765b1be | 2648 | |
a7519a3c RH |
2649 | static bfd_boolean |
2650 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2651 | struct bfd_link_info *info) | |
2652 | { | |
2653 | bfd_boolean dynamic; | |
2654 | struct alpha_elf_got_entry *gotent; | |
2655 | unsigned long entries; | |
3765b1be | 2656 | |
a7519a3c RH |
2657 | if (h->root.root.type == bfd_link_hash_warning) |
2658 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2659 | ||
6ec7057a RH |
2660 | /* If we're using a plt for this symbol, then all of its relocations |
2661 | for its got entries go into .rela.plt. */ | |
2662 | if (h->root.needs_plt) | |
2663 | return TRUE; | |
2664 | ||
a7519a3c RH |
2665 | /* If the symbol is dynamic, we'll need all the relocations in their |
2666 | natural form. If this is a shared object, and it has been forced | |
2667 | local, we'll need the same number of RELATIVE relocations. */ | |
2668 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2669 | ||
2670 | /* If the symbol is a hidden undefined weak, then we never have any | |
2671 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2672 | based on info->shared. */ | |
2673 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2674 | return TRUE; | |
2675 | ||
2676 | entries = 0; | |
2677 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2678 | if (gotent->use_count > 0) | |
2679 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2680 | dynamic, info->shared); | |
2681 | ||
a7519a3c RH |
2682 | if (entries > 0) |
2683 | { | |
2684 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2685 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2686 | BFD_ASSERT (srel != NULL); | |
2687 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2688 | } |
3765b1be | 2689 | |
a7519a3c | 2690 | return TRUE; |
3765b1be RH |
2691 | } |
2692 | ||
a7519a3c | 2693 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2694 | |
b34976b6 | 2695 | static bfd_boolean |
a7519a3c | 2696 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2697 | { |
a7519a3c RH |
2698 | unsigned long entries; |
2699 | bfd *i, *dynobj; | |
2700 | asection *srel; | |
252b5132 | 2701 | |
a7519a3c RH |
2702 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2703 | require attention for the main application as well. */ | |
252b5132 | 2704 | |
a7519a3c RH |
2705 | entries = 0; |
2706 | for (i = alpha_elf_hash_table(info)->got_list; | |
2707 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2708 | { | |
2709 | bfd *j; | |
3241278a | 2710 | |
a7519a3c RH |
2711 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2712 | { | |
2713 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2714 | int k, n; | |
252b5132 | 2715 | |
a7519a3c RH |
2716 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2717 | if (!local_got_entries) | |
2718 | continue; | |
252b5132 | 2719 | |
a7519a3c RH |
2720 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2721 | for (gotent = local_got_entries[k]; | |
2722 | gotent ; gotent = gotent->next) | |
2723 | if (gotent->use_count > 0) | |
2724 | entries += (alpha_dynamic_entries_for_reloc | |
2725 | (gotent->reloc_type, 0, info->shared)); | |
2726 | } | |
2727 | } | |
3765b1be | 2728 | |
a7519a3c RH |
2729 | dynobj = elf_hash_table(info)->dynobj; |
2730 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2731 | if (!srel) | |
2732 | { | |
2733 | BFD_ASSERT (entries == 0); | |
2734 | return TRUE; | |
2735 | } | |
2736 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2737 | |
a7519a3c RH |
2738 | /* Now do the non-local symbols. */ |
2739 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2740 | elf64_alpha_size_rela_got_1, info); | |
252b5132 | 2741 | |
a7519a3c RH |
2742 | return TRUE; |
2743 | } | |
252b5132 | 2744 | |
a7519a3c | 2745 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2746 | |
a7519a3c RH |
2747 | static bfd_boolean |
2748 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2749 | struct bfd_link_info *info) | |
2750 | { | |
2751 | bfd *dynobj; | |
2752 | asection *s; | |
2753 | bfd_boolean relplt; | |
3765b1be | 2754 | |
a7519a3c RH |
2755 | dynobj = elf_hash_table(info)->dynobj; |
2756 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2757 | |
a7519a3c RH |
2758 | if (elf_hash_table (info)->dynamic_sections_created) |
2759 | { | |
2760 | /* Set the contents of the .interp section to the interpreter. */ | |
2761 | if (info->executable) | |
252b5132 | 2762 | { |
a7519a3c RH |
2763 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2764 | BFD_ASSERT (s != NULL); | |
2765 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2766 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2767 | } | |
3765b1be | 2768 | |
a7519a3c RH |
2769 | /* Now that we've seen all of the input files, we can decide which |
2770 | symbols need dynamic relocation entries and which don't. We've | |
2771 | collected information in check_relocs that we can now apply to | |
2772 | size the dynamic relocation sections. */ | |
2773 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2774 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2775 | |
a7519a3c | 2776 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2777 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2778 | } |
2779 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2780 | |
a7519a3c RH |
2781 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2782 | determined the sizes of the various dynamic sections. Allocate | |
2783 | memory for them. */ | |
2784 | relplt = FALSE; | |
2785 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2786 | { | |
2787 | const char *name; | |
2788 | bfd_boolean strip; | |
3765b1be | 2789 | |
a7519a3c RH |
2790 | if (!(s->flags & SEC_LINKER_CREATED)) |
2791 | continue; | |
cc03ec80 | 2792 | |
a7519a3c RH |
2793 | /* It's OK to base decisions on the section name, because none |
2794 | of the dynobj section names depend upon the input files. */ | |
2795 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2796 | |
a7519a3c RH |
2797 | /* If we don't need this section, strip it from the output file. |
2798 | This is to handle .rela.bss and .rela.plt. We must create it | |
2799 | in create_dynamic_sections, because it must be created before | |
2800 | the linker maps input sections to output sections. The | |
2801 | linker does that before adjust_dynamic_symbol is called, and | |
2802 | it is that function which decides whether anything needs to | |
2803 | go into these sections. */ | |
3765b1be | 2804 | |
a7519a3c | 2805 | strip = FALSE; |
3765b1be | 2806 | |
a7519a3c | 2807 | if (strncmp (name, ".rela", 5) == 0) |
3765b1be | 2808 | { |
a7519a3c | 2809 | strip = (s->size == 0); |
252b5132 | 2810 | |
a7519a3c RH |
2811 | if (!strip) |
2812 | { | |
2813 | if (strcmp(name, ".rela.plt") == 0) | |
2814 | relplt = TRUE; | |
252b5132 | 2815 | |
a7519a3c RH |
2816 | /* We use the reloc_count field as a counter if we need |
2817 | to copy relocs into the output file. */ | |
2818 | s->reloc_count = 0; | |
252b5132 | 2819 | } |
3765b1be | 2820 | } |
a7519a3c | 2821 | else if (strcmp (name, ".plt") != 0) |
3765b1be | 2822 | { |
a7519a3c RH |
2823 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2824 | continue; | |
2825 | } | |
252b5132 | 2826 | |
a7519a3c RH |
2827 | if (strip) |
2828 | s->flags |= SEC_EXCLUDE; | |
2829 | else | |
2830 | { | |
2831 | /* Allocate memory for the section contents. */ | |
2832 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2833 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 2834 | return FALSE; |
a7519a3c RH |
2835 | } |
2836 | } | |
3765b1be | 2837 | |
a7519a3c RH |
2838 | if (elf_hash_table (info)->dynamic_sections_created) |
2839 | { | |
2840 | /* Add some entries to the .dynamic section. We fill in the | |
2841 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2842 | must add the entries now so that we get the correct size for | |
2843 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2844 | dynamic linker and used by the debugger. */ | |
2845 | #define add_dynamic_entry(TAG, VAL) \ | |
2846 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2847 | |
a7519a3c RH |
2848 | if (info->executable) |
2849 | { | |
2850 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2851 | return FALSE; | |
3765b1be RH |
2852 | } |
2853 | ||
a7519a3c | 2854 | if (relplt) |
3765b1be | 2855 | { |
a7519a3c RH |
2856 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2857 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2858 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2859 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2860 | return FALSE; | |
6ec7057a RH |
2861 | |
2862 | if (elf64_alpha_use_secureplt | |
2863 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2864 | return FALSE; | |
a7519a3c | 2865 | } |
252b5132 | 2866 | |
a7519a3c RH |
2867 | if (!add_dynamic_entry (DT_RELA, 0) |
2868 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2869 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2870 | return FALSE; | |
2871 | ||
2872 | if (info->flags & DF_TEXTREL) | |
2873 | { | |
2874 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2875 | return FALSE; | |
252b5132 RH |
2876 | } |
2877 | } | |
a7519a3c | 2878 | #undef add_dynamic_entry |
252b5132 | 2879 | |
b34976b6 | 2880 | return TRUE; |
252b5132 | 2881 | } |
a7519a3c RH |
2882 | \f |
2883 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2884 | |
a7519a3c RH |
2885 | Currently I'm only handling what I can do with existing compiler |
2886 | and assembler support, which means no instructions are removed, | |
2887 | though some may be nopped. At this time GCC does not emit enough | |
2888 | information to do all of the relaxing that is possible. It will | |
2889 | take some not small amount of work for that to happen. | |
252b5132 | 2890 | |
a7519a3c RH |
2891 | There are a couple of interesting papers that I once read on this |
2892 | subject, that I cannot find references to at the moment, that | |
2893 | related to Alpha in particular. They are by David Wall, then of | |
2894 | DEC WRL. */ | |
252b5132 | 2895 | |
a7519a3c RH |
2896 | struct alpha_relax_info |
2897 | { | |
2898 | bfd *abfd; | |
2899 | asection *sec; | |
2900 | bfd_byte *contents; | |
2901 | Elf_Internal_Shdr *symtab_hdr; | |
2902 | Elf_Internal_Rela *relocs, *relend; | |
2903 | struct bfd_link_info *link_info; | |
2904 | bfd_vma gp; | |
2905 | bfd *gotobj; | |
2906 | asection *tsec; | |
2907 | struct alpha_elf_link_hash_entry *h; | |
2908 | struct alpha_elf_got_entry **first_gotent; | |
2909 | struct alpha_elf_got_entry *gotent; | |
2910 | bfd_boolean changed_contents; | |
2911 | bfd_boolean changed_relocs; | |
2912 | unsigned char other; | |
2913 | }; | |
252b5132 | 2914 | |
a7519a3c RH |
2915 | static Elf_Internal_Rela * |
2916 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2917 | Elf_Internal_Rela *relend, | |
2918 | bfd_vma offset, int type) | |
2919 | { | |
2920 | while (rel < relend) | |
252b5132 | 2921 | { |
a7519a3c RH |
2922 | if (rel->r_offset == offset |
2923 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2924 | return rel; | |
2925 | ++rel; | |
2926 | } | |
2927 | return NULL; | |
2928 | } | |
252b5132 | 2929 | |
a7519a3c RH |
2930 | static bfd_boolean |
2931 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2932 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2933 | { | |
2934 | unsigned int insn; | |
2935 | bfd_signed_vma disp; | |
252b5132 | 2936 | |
a7519a3c RH |
2937 | /* Get the instruction. */ |
2938 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2939 | |
a7519a3c RH |
2940 | if (insn >> 26 != OP_LDQ) |
2941 | { | |
2942 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2943 | ((*_bfd_error_handler) | |
2944 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2945 | info->abfd, info->sec, | |
2946 | (unsigned long) irel->r_offset, howto->name)); | |
2947 | return TRUE; | |
2948 | } | |
252b5132 | 2949 | |
a7519a3c RH |
2950 | /* Can't relax dynamic symbols. */ |
2951 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2952 | return TRUE; | |
252b5132 | 2953 | |
a7519a3c RH |
2954 | /* Can't use local-exec relocations in shared libraries. */ |
2955 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2956 | return TRUE; | |
252b5132 | 2957 | |
a7519a3c RH |
2958 | if (r_type == R_ALPHA_LITERAL) |
2959 | { | |
2960 | /* Look for nice constant addresses. This includes the not-uncommon | |
2961 | special case of 0 for undefweak symbols. */ | |
2962 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2963 | || (!info->link_info->shared | |
2964 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2965 | { | |
2966 | disp = 0; | |
2967 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2968 | insn |= (symval & 0xffff); | |
2969 | r_type = R_ALPHA_NONE; | |
2970 | } | |
2971 | else | |
2972 | { | |
2973 | disp = symval - info->gp; | |
2974 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2975 | r_type = R_ALPHA_GPREL16; | |
2976 | } | |
252b5132 RH |
2977 | } |
2978 | else | |
252b5132 | 2979 | { |
a7519a3c | 2980 | bfd_vma dtp_base, tp_base; |
252b5132 | 2981 | |
a7519a3c RH |
2982 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2983 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2984 | tp_base = alpha_get_tprel_base (info->link_info); | |
2985 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2986 | |
a7519a3c | 2987 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2988 | |
a7519a3c RH |
2989 | switch (r_type) |
2990 | { | |
2991 | case R_ALPHA_GOTDTPREL: | |
2992 | r_type = R_ALPHA_DTPREL16; | |
2993 | break; | |
2994 | case R_ALPHA_GOTTPREL: | |
2995 | r_type = R_ALPHA_TPREL16; | |
2996 | break; | |
2997 | default: | |
2998 | BFD_ASSERT (0); | |
2999 | return FALSE; | |
3000 | } | |
3001 | } | |
252b5132 | 3002 | |
a7519a3c | 3003 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3004 | return TRUE; |
252b5132 | 3005 | |
a7519a3c RH |
3006 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3007 | info->changed_contents = TRUE; | |
252b5132 | 3008 | |
a7519a3c RH |
3009 | /* Reduce the use count on this got entry by one, possibly |
3010 | eliminating it. */ | |
3011 | if (--info->gotent->use_count == 0) | |
252b5132 | 3012 | { |
a7519a3c RH |
3013 | int sz = alpha_got_entry_size (r_type); |
3014 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3015 | if (!info->h) | |
3016 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3017 | } |
252b5132 | 3018 | |
a7519a3c RH |
3019 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3020 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3021 | info->changed_relocs = TRUE; | |
3022 | ||
3023 | /* ??? Search forward through this basic block looking for insns | |
3024 | that use the target register. Stop after an insn modifying the | |
3025 | register is seen, or after a branch or call. | |
252b5132 | 3026 | |
a7519a3c RH |
3027 | Any such memory load insn may be substituted by a load directly |
3028 | off the GP. This allows the memory load insn to be issued before | |
3029 | the calculated GP register would otherwise be ready. | |
252b5132 | 3030 | |
a7519a3c RH |
3031 | Any such jsr insn can be replaced by a bsr if it is in range. |
3032 | ||
3033 | This would mean that we'd have to _add_ relocations, the pain of | |
3034 | which gives one pause. */ | |
252b5132 | 3035 | |
b34976b6 | 3036 | return TRUE; |
252b5132 RH |
3037 | } |
3038 | ||
a7519a3c RH |
3039 | static bfd_vma |
3040 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3041 | { |
a7519a3c RH |
3042 | /* If the function has the same gp, and we can identify that the |
3043 | function does not use its function pointer, we can eliminate the | |
3044 | address load. */ | |
252b5132 | 3045 | |
a7519a3c RH |
3046 | /* If the symbol is marked NOPV, we are being told the function never |
3047 | needs its procedure value. */ | |
3048 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3049 | return symval; | |
252b5132 | 3050 | |
a7519a3c RH |
3051 | /* If the symbol is marked STD_GP, we are being told the function does |
3052 | a normal ldgp in the first two words. */ | |
3053 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3054 | ; | |
252b5132 | 3055 | |
a7519a3c RH |
3056 | /* Otherwise, we may be able to identify a GP load in the first two |
3057 | words, which we can then skip. */ | |
3058 | else | |
252b5132 | 3059 | { |
a7519a3c RH |
3060 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3061 | bfd_vma ofs; | |
252b5132 | 3062 | |
a7519a3c RH |
3063 | /* Load the relocations from the section that the target symbol is in. */ |
3064 | if (info->sec == info->tsec) | |
252b5132 | 3065 | { |
a7519a3c RH |
3066 | tsec_relocs = info->relocs; |
3067 | tsec_relend = info->relend; | |
3068 | tsec_free = NULL; | |
3069 | } | |
3070 | else | |
3071 | { | |
3072 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3073 | (info->abfd, info->tsec, (PTR) NULL, | |
3074 | (Elf_Internal_Rela *) NULL, | |
3075 | info->link_info->keep_memory)); | |
3076 | if (tsec_relocs == NULL) | |
3077 | return 0; | |
3078 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3079 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3080 | } | |
252b5132 | 3081 | |
a7519a3c RH |
3082 | /* Recover the symbol's offset within the section. */ |
3083 | ofs = (symval - info->tsec->output_section->vma | |
3084 | - info->tsec->output_offset); | |
252b5132 | 3085 | |
a7519a3c RH |
3086 | /* Look for a GPDISP reloc. */ |
3087 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3088 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3089 | |
a7519a3c RH |
3090 | if (!gpdisp || gpdisp->r_addend != 4) |
3091 | { | |
3092 | if (tsec_free) | |
3093 | free (tsec_free); | |
3094 | return 0; | |
252b5132 | 3095 | } |
a7519a3c RH |
3096 | if (tsec_free) |
3097 | free (tsec_free); | |
252b5132 RH |
3098 | } |
3099 | ||
a7519a3c RH |
3100 | /* We've now determined that we can skip an initial gp load. Verify |
3101 | that the call and the target use the same gp. */ | |
3102 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
3103 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
3104 | return 0; | |
252b5132 | 3105 | |
a7519a3c RH |
3106 | return symval + 8; |
3107 | } | |
252b5132 | 3108 | |
a7519a3c RH |
3109 | static bfd_boolean |
3110 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3111 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3112 | { |
a7519a3c RH |
3113 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3114 | int flags, count, i; | |
3115 | bfd_signed_vma disp; | |
3116 | bfd_boolean fits16; | |
3117 | bfd_boolean fits32; | |
3118 | bfd_boolean lit_reused = FALSE; | |
3119 | bfd_boolean all_optimized = TRUE; | |
3120 | unsigned int lit_insn; | |
252b5132 | 3121 | |
a7519a3c RH |
3122 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3123 | if (lit_insn >> 26 != OP_LDQ) | |
3124 | { | |
3125 | ((*_bfd_error_handler) | |
3126 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3127 | info->abfd, info->sec, | |
3128 | (unsigned long) irel->r_offset)); | |
3129 | return TRUE; | |
3130 | } | |
252b5132 | 3131 | |
a7519a3c RH |
3132 | /* Can't relax dynamic symbols. */ |
3133 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3134 | return TRUE; | |
3135 | ||
3136 | /* Summarize how this particular LITERAL is used. */ | |
3137 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3138 | { |
a7519a3c RH |
3139 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3140 | break; | |
8288a39e | 3141 | if (urel->r_addend <= 6) |
a7519a3c RH |
3142 | flags |= 1 << urel->r_addend; |
3143 | } | |
252b5132 | 3144 | |
a7519a3c RH |
3145 | /* A little preparation for the loop... */ |
3146 | disp = symval - info->gp; | |
252b5132 | 3147 | |
a7519a3c RH |
3148 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3149 | { | |
3150 | unsigned int insn; | |
3151 | int insn_disp; | |
3152 | bfd_signed_vma xdisp; | |
252b5132 | 3153 | |
a7519a3c | 3154 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3155 | |
a7519a3c RH |
3156 | switch (urel->r_addend) |
3157 | { | |
3158 | case LITUSE_ALPHA_ADDR: | |
3159 | default: | |
3160 | /* This type is really just a placeholder to note that all | |
3161 | uses cannot be optimized, but to still allow some. */ | |
3162 | all_optimized = FALSE; | |
3163 | break; | |
252b5132 | 3164 | |
a7519a3c RH |
3165 | case LITUSE_ALPHA_BASE: |
3166 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3167 | |
a7519a3c RH |
3168 | /* Extract the displacement from the instruction, sign-extending |
3169 | it if necessary, then test whether it is within 16 or 32 bits | |
3170 | displacement from GP. */ | |
3171 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3172 | ||
3173 | xdisp = disp + insn_disp; | |
3174 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3175 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3176 | && xdisp < 0x7fff8000); | |
3177 | ||
3178 | if (fits16) | |
3179 | { | |
3180 | /* Take the op code and dest from this insn, take the base | |
3181 | register from the literal insn. Leave the offset alone. */ | |
3182 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3183 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3184 | R_ALPHA_GPREL16); | |
3185 | urel->r_addend = irel->r_addend; | |
3186 | info->changed_relocs = TRUE; | |
252b5132 | 3187 | |
a7519a3c RH |
3188 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3189 | info->contents + urel->r_offset); | |
3190 | info->changed_contents = TRUE; | |
252b5132 | 3191 | } |
252b5132 | 3192 | |
a7519a3c RH |
3193 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3194 | else if (fits32 && !(flags & ~6)) | |
3195 | { | |
3196 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3197 | |
a7519a3c RH |
3198 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3199 | R_ALPHA_GPRELHIGH); | |
3200 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3201 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3202 | info->contents + irel->r_offset); | |
3203 | lit_reused = TRUE; | |
3204 | info->changed_contents = TRUE; | |
252b5132 | 3205 | |
a7519a3c RH |
3206 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3207 | R_ALPHA_GPRELLOW); | |
3208 | urel->r_addend = irel->r_addend; | |
3209 | info->changed_relocs = TRUE; | |
3210 | } | |
3211 | else | |
3212 | all_optimized = FALSE; | |
3213 | break; | |
252b5132 | 3214 | |
a7519a3c RH |
3215 | case LITUSE_ALPHA_BYTOFF: |
3216 | /* We can always optimize byte instructions. */ | |
252b5132 | 3217 | |
a7519a3c RH |
3218 | /* FIXME: sanity check the insn for byte op. Check that the |
3219 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3220 | |
a7519a3c RH |
3221 | insn &= ~ (unsigned) 0x001ff000; |
3222 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3223 | |
a7519a3c RH |
3224 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3225 | urel->r_addend = 0; | |
3226 | info->changed_relocs = TRUE; | |
e92d460e | 3227 | |
a7519a3c RH |
3228 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3229 | info->contents + urel->r_offset); | |
3230 | info->changed_contents = TRUE; | |
3231 | break; | |
252b5132 | 3232 | |
a7519a3c RH |
3233 | case LITUSE_ALPHA_JSR: |
3234 | case LITUSE_ALPHA_TLSGD: | |
3235 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3236 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3237 | { |
a7519a3c RH |
3238 | bfd_vma optdest, org; |
3239 | bfd_signed_vma odisp; | |
252b5132 | 3240 | |
a7519a3c RH |
3241 | /* For undefined weak symbols, we're mostly interested in getting |
3242 | rid of the got entry whenever possible, so optimize this to a | |
3243 | use of the zero register. */ | |
3244 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3245 | { | |
3246 | insn |= 31 << 16; | |
3247 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3248 | info->contents + urel->r_offset); | |
252b5132 | 3249 | |
a7519a3c RH |
3250 | info->changed_contents = TRUE; |
3251 | break; | |
3252 | } | |
252b5132 | 3253 | |
a7519a3c RH |
3254 | /* If not zero, place to jump without needing pv. */ |
3255 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3256 | org = (info->sec->output_section->vma | |
3257 | + info->sec->output_offset | |
3258 | + urel->r_offset + 4); | |
3259 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3260 | |
a7519a3c RH |
3261 | if (odisp >= -0x400000 && odisp < 0x400000) |
3262 | { | |
3263 | Elf_Internal_Rela *xrel; | |
252b5132 | 3264 | |
a7519a3c RH |
3265 | /* Preserve branch prediction call stack when possible. */ |
3266 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3267 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3268 | else | |
3269 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3270 | |
a7519a3c RH |
3271 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3272 | R_ALPHA_BRADDR); | |
3273 | urel->r_addend = irel->r_addend; | |
252b5132 | 3274 | |
a7519a3c RH |
3275 | if (optdest) |
3276 | urel->r_addend += optdest - symval; | |
3277 | else | |
3278 | all_optimized = FALSE; | |
252b5132 | 3279 | |
a7519a3c RH |
3280 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3281 | info->contents + urel->r_offset); | |
252b5132 | 3282 | |
a7519a3c RH |
3283 | /* Kill any HINT reloc that might exist for this insn. */ |
3284 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3285 | (info->relocs, info->relend, urel->r_offset, | |
3286 | R_ALPHA_HINT)); | |
3287 | if (xrel) | |
3288 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3289 | |
a7519a3c RH |
3290 | info->changed_contents = TRUE; |
3291 | info->changed_relocs = TRUE; | |
3292 | } | |
3293 | else | |
3294 | all_optimized = FALSE; | |
252b5132 | 3295 | |
a7519a3c RH |
3296 | /* Even if the target is not in range for a direct branch, |
3297 | if we share a GP, we can eliminate the gp reload. */ | |
3298 | if (optdest) | |
3299 | { | |
3300 | Elf_Internal_Rela *gpdisp | |
3301 | = (elf64_alpha_find_reloc_at_ofs | |
3302 | (info->relocs, irelend, urel->r_offset + 4, | |
3303 | R_ALPHA_GPDISP)); | |
3304 | if (gpdisp) | |
3305 | { | |
3306 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3307 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3308 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3309 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3310 | |
a7519a3c RH |
3311 | /* Verify that the instruction is "ldah $29,0($26)". |
3312 | Consider a function that ends in a noreturn call, | |
3313 | and that the next function begins with an ldgp, | |
3314 | and that by accident there is no padding between. | |
3315 | In that case the insn would use $27 as the base. */ | |
3316 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3317 | { | |
3318 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3319 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3320 | |
a7519a3c RH |
3321 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3322 | info->changed_contents = TRUE; | |
3323 | info->changed_relocs = TRUE; | |
3324 | } | |
3325 | } | |
3326 | } | |
3327 | } | |
3328 | break; | |
252b5132 | 3329 | } |
252b5132 RH |
3330 | } |
3331 | ||
a7519a3c RH |
3332 | /* If all cases were optimized, we can reduce the use count on this |
3333 | got entry by one, possibly eliminating it. */ | |
3334 | if (all_optimized) | |
252b5132 | 3335 | { |
a7519a3c | 3336 | if (--info->gotent->use_count == 0) |
252b5132 | 3337 | { |
a7519a3c RH |
3338 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3339 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3340 | if (!info->h) | |
3341 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3342 | } |
a7519a3c RH |
3343 | |
3344 | /* If the literal instruction is no longer needed (it may have been | |
3345 | reused. We can eliminate it. */ | |
3346 | /* ??? For now, I don't want to deal with compacting the section, | |
3347 | so just nop it out. */ | |
3348 | if (!lit_reused) | |
252b5132 | 3349 | { |
a7519a3c RH |
3350 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3351 | info->changed_relocs = TRUE; | |
252b5132 | 3352 | |
a7519a3c RH |
3353 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3354 | info->contents + irel->r_offset); | |
3355 | info->changed_contents = TRUE; | |
3356 | } | |
252b5132 | 3357 | |
a7519a3c RH |
3358 | return TRUE; |
3359 | } | |
3360 | else | |
3361 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3362 | } |
3363 | ||
b34976b6 | 3364 | static bfd_boolean |
a7519a3c RH |
3365 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3366 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3367 | { |
a7519a3c RH |
3368 | bfd_byte *pos[5]; |
3369 | unsigned int insn; | |
3370 | Elf_Internal_Rela *gpdisp, *hint; | |
3371 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3372 | unsigned long new_symndx; | |
f44f99a5 | 3373 | |
a7519a3c | 3374 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3375 | |
a7519a3c RH |
3376 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3377 | to use dynamic model for it. */ | |
3378 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3379 | ; | |
f44f99a5 | 3380 | |
a7519a3c RH |
3381 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3382 | then we might as well relax to IE. */ | |
3383 | else if (info->link_info->shared && !dynamic | |
3384 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3385 | ; | |
f44f99a5 | 3386 | |
a7519a3c RH |
3387 | /* Otherwise we must be building an executable to do anything. */ |
3388 | else if (info->link_info->shared) | |
3389 | return TRUE; | |
f44f99a5 | 3390 | |
a7519a3c RH |
3391 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3392 | the matching LITUSE_TLS relocations. */ | |
3393 | if (irel + 2 >= info->relend) | |
3394 | return TRUE; | |
3395 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3396 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3397 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3398 | return TRUE; | |
f44f99a5 | 3399 | |
a7519a3c RH |
3400 | /* There must be a GPDISP relocation positioned immediately after the |
3401 | LITUSE relocation. */ | |
3402 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3403 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3404 | if (!gpdisp) | |
b34976b6 | 3405 | return TRUE; |
f44f99a5 | 3406 | |
a7519a3c RH |
3407 | pos[0] = info->contents + irel[0].r_offset; |
3408 | pos[1] = info->contents + irel[1].r_offset; | |
3409 | pos[2] = info->contents + irel[2].r_offset; | |
3410 | pos[3] = info->contents + gpdisp->r_offset; | |
3411 | pos[4] = pos[3] + gpdisp->r_addend; | |
3412 | pos1_unusable = FALSE; | |
f44f99a5 | 3413 | |
a7519a3c RH |
3414 | /* Generally, the positions are not allowed to be out of order, lest the |
3415 | modified insn sequence have different register lifetimes. We can make | |
3416 | an exception when pos 1 is adjacent to pos 0. */ | |
3417 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3418 | { |
a7519a3c RH |
3419 | bfd_byte *tmp = pos[0]; |
3420 | pos[0] = pos[1]; | |
3421 | pos[1] = tmp; | |
f44f99a5 | 3422 | } |
a7519a3c RH |
3423 | else if (pos[1] < pos[0]) |
3424 | pos1_unusable = TRUE; | |
3425 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3426 | return TRUE; | |
cc03ec80 | 3427 | |
a7519a3c RH |
3428 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3429 | smash the symndx when we adjust the relocations below. */ | |
3430 | { | |
3431 | struct alpha_elf_got_entry *lit_gotent; | |
3432 | struct alpha_elf_link_hash_entry *lit_h; | |
3433 | unsigned long indx; | |
f44f99a5 | 3434 | |
a7519a3c RH |
3435 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3436 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3437 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3438 | |
a7519a3c RH |
3439 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3440 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3441 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3442 | |
a7519a3c RH |
3443 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3444 | lit_gotent = lit_gotent->next) | |
3445 | if (lit_gotent->gotobj == info->gotobj | |
3446 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3447 | && lit_gotent->addend == irel[1].r_addend) | |
3448 | break; | |
3449 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3450 | |
a7519a3c RH |
3451 | if (--lit_gotent->use_count == 0) |
3452 | { | |
3453 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3454 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3455 | } | |
3456 | } | |
252b5132 | 3457 | |
a7519a3c | 3458 | /* Change |
252b5132 | 3459 | |
a7519a3c RH |
3460 | lda $16,x($gp) !tlsgd!1 |
3461 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3462 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3463 | ldah $29,0($26) !gpdisp!2 | |
3464 | lda $29,0($29) !gpdisp!2 | |
3465 | to | |
3466 | ldq $16,x($gp) !gottprel | |
3467 | unop | |
3468 | call_pal rduniq | |
3469 | addq $16,$0,$0 | |
3470 | unop | |
3471 | or the first pair to | |
3472 | lda $16,x($gp) !tprel | |
3473 | unop | |
3474 | or | |
3475 | ldah $16,x($gp) !tprelhi | |
3476 | lda $16,x($16) !tprello | |
3477 | ||
3478 | as appropriate. */ | |
3479 | ||
3480 | use_gottprel = FALSE; | |
3481 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3482 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3483 | { |
a7519a3c RH |
3484 | case 1: |
3485 | { | |
3486 | bfd_vma tp_base; | |
3487 | bfd_signed_vma disp; | |
252b5132 | 3488 | |
a7519a3c RH |
3489 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3490 | tp_base = alpha_get_tprel_base (info->link_info); | |
3491 | disp = symval - tp_base; | |
252b5132 | 3492 | |
a7519a3c RH |
3493 | if (disp >= -0x8000 && disp < 0x8000) |
3494 | { | |
3495 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3496 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3497 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3498 | |
a7519a3c RH |
3499 | irel[0].r_offset = pos[0] - info->contents; |
3500 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3501 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3502 | break; | |
3503 | } | |
3504 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3505 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3506 | && !pos1_unusable) | |
3507 | { | |
3508 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3509 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3510 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3511 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3512 | |
a7519a3c RH |
3513 | irel[0].r_offset = pos[0] - info->contents; |
3514 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3515 | irel[1].r_offset = pos[1] - info->contents; | |
3516 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3517 | break; | |
3518 | } | |
3519 | } | |
3520 | /* FALLTHRU */ | |
3765b1be | 3521 | |
3765b1be | 3522 | default: |
a7519a3c RH |
3523 | use_gottprel = TRUE; |
3524 | ||
3525 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3526 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3527 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3528 | ||
3529 | irel[0].r_offset = pos[0] - info->contents; | |
3530 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3531 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3532 | break; | |
3765b1be | 3533 | } |
3765b1be | 3534 | |
a7519a3c | 3535 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3536 | |
a7519a3c RH |
3537 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3538 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3539 | |
a7519a3c | 3540 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3541 | |
a7519a3c RH |
3542 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3543 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3544 | |
a7519a3c RH |
3545 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3546 | irel[2].r_offset, R_ALPHA_HINT); | |
3547 | if (hint) | |
3548 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3549 | |
a7519a3c RH |
3550 | info->changed_contents = TRUE; |
3551 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3552 | |
a7519a3c RH |
3553 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3554 | if (--info->gotent->use_count == 0) | |
3765b1be | 3555 | { |
a7519a3c RH |
3556 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3557 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3558 | if (!info->h) | |
3559 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3560 | } |
252b5132 | 3561 | |
a7519a3c RH |
3562 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3563 | count on that got entry. */ | |
3564 | if (use_gottprel) | |
f44f99a5 | 3565 | { |
a7519a3c | 3566 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3567 | |
a7519a3c RH |
3568 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3569 | tprel_gotent = tprel_gotent->next) | |
3570 | if (tprel_gotent->gotobj == info->gotobj | |
3571 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3572 | && tprel_gotent->addend == irel->r_addend) | |
3573 | break; | |
3574 | if (tprel_gotent) | |
3575 | tprel_gotent->use_count++; | |
3576 | else | |
f44f99a5 | 3577 | { |
a7519a3c RH |
3578 | if (info->gotent->use_count == 0) |
3579 | tprel_gotent = info->gotent; | |
3580 | else | |
3581 | { | |
3582 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3583 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3584 | if (!tprel_gotent) | |
3585 | return FALSE; | |
f44f99a5 | 3586 | |
a7519a3c RH |
3587 | tprel_gotent->next = *info->first_gotent; |
3588 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3589 | |
a7519a3c RH |
3590 | tprel_gotent->gotobj = info->gotobj; |
3591 | tprel_gotent->addend = irel->r_addend; | |
3592 | tprel_gotent->got_offset = -1; | |
3593 | tprel_gotent->reloc_done = 0; | |
3594 | tprel_gotent->reloc_xlated = 0; | |
3595 | } | |
f44f99a5 | 3596 | |
a7519a3c RH |
3597 | tprel_gotent->use_count = 1; |
3598 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3599 | } | |
f44f99a5 | 3600 | } |
f44f99a5 | 3601 | |
b34976b6 | 3602 | return TRUE; |
f44f99a5 RH |
3603 | } |
3604 | ||
b34976b6 | 3605 | static bfd_boolean |
a7519a3c RH |
3606 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3607 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3608 | { |
a7519a3c RH |
3609 | Elf_Internal_Shdr *symtab_hdr; |
3610 | Elf_Internal_Rela *internal_relocs; | |
3611 | Elf_Internal_Rela *irel, *irelend; | |
3612 | Elf_Internal_Sym *isymbuf = NULL; | |
3613 | struct alpha_elf_got_entry **local_got_entries; | |
3614 | struct alpha_relax_info info; | |
f44f99a5 | 3615 | |
a7519a3c RH |
3616 | /* We are not currently changing any sizes, so only one pass. */ |
3617 | *again = FALSE; | |
f44f99a5 | 3618 | |
a7519a3c RH |
3619 | if (link_info->relocatable |
3620 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3621 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3622 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3623 | return TRUE; |
3624 | ||
a7519a3c RH |
3625 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3626 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
252b5132 | 3627 | |
a7519a3c RH |
3628 | /* Load the relocations for this section. */ |
3629 | internal_relocs = (_bfd_elf_link_read_relocs | |
3630 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3631 | link_info->keep_memory)); | |
3632 | if (internal_relocs == NULL) | |
3633 | return FALSE; | |
252b5132 | 3634 | |
a7519a3c RH |
3635 | memset(&info, 0, sizeof (info)); |
3636 | info.abfd = abfd; | |
3637 | info.sec = sec; | |
3638 | info.link_info = link_info; | |
3639 | info.symtab_hdr = symtab_hdr; | |
3640 | info.relocs = internal_relocs; | |
3641 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3642 | ||
3643 | /* Find the GP for this object. Do not store the result back via | |
3644 | _bfd_set_gp_value, since this could change again before final. */ | |
3645 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3646 | if (info.gotobj) | |
3765b1be | 3647 | { |
a7519a3c RH |
3648 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3649 | info.gp = (sgot->output_section->vma | |
3650 | + sgot->output_offset | |
3651 | + 0x8000); | |
252b5132 RH |
3652 | } |
3653 | ||
a7519a3c RH |
3654 | /* Get the section contents. */ |
3655 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3656 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3657 | else | |
3658 | { | |
3659 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3660 | goto error_return; | |
3661 | } | |
252b5132 | 3662 | |
a7519a3c RH |
3663 | for (irel = internal_relocs; irel < irelend; irel++) |
3664 | { | |
3665 | bfd_vma symval; | |
3666 | struct alpha_elf_got_entry *gotent; | |
3667 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3668 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3669 | ||
3670 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3671 | switch (r_type) | |
3672 | { | |
3673 | case R_ALPHA_LITERAL: | |
3674 | case R_ALPHA_GPRELHIGH: | |
3675 | case R_ALPHA_GPRELLOW: | |
3676 | case R_ALPHA_GOTDTPREL: | |
3677 | case R_ALPHA_GOTTPREL: | |
3678 | case R_ALPHA_TLSGD: | |
3679 | break; | |
3680 | ||
3681 | case R_ALPHA_TLSLDM: | |
3682 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3683 | reloc to the 0 symbol so that they all match. */ | |
3684 | r_symndx = 0; | |
3685 | break; | |
3686 | ||
3687 | default: | |
3688 | continue; | |
3689 | } | |
3690 | ||
3691 | /* Get the value of the symbol referred to by the reloc. */ | |
3692 | if (r_symndx < symtab_hdr->sh_info) | |
3693 | { | |
3694 | /* A local symbol. */ | |
3695 | Elf_Internal_Sym *isym; | |
3696 | ||
3697 | /* Read this BFD's local symbols. */ | |
3698 | if (isymbuf == NULL) | |
3699 | { | |
3700 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3701 | if (isymbuf == NULL) | |
3702 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3703 | symtab_hdr->sh_info, 0, | |
3704 | NULL, NULL, NULL); | |
3705 | if (isymbuf == NULL) | |
3706 | goto error_return; | |
3707 | } | |
252b5132 | 3708 | |
a7519a3c | 3709 | isym = isymbuf + r_symndx; |
252b5132 | 3710 | |
a7519a3c RH |
3711 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3712 | means forcing the symbol value to the tp base. */ | |
3713 | if (r_type == R_ALPHA_TLSLDM) | |
3714 | { | |
3715 | info.tsec = bfd_abs_section_ptr; | |
3716 | symval = alpha_get_tprel_base (info.link_info); | |
3717 | } | |
3718 | else | |
3719 | { | |
3720 | symval = isym->st_value; | |
3721 | if (isym->st_shndx == SHN_UNDEF) | |
3722 | continue; | |
3723 | else if (isym->st_shndx == SHN_ABS) | |
3724 | info.tsec = bfd_abs_section_ptr; | |
3725 | else if (isym->st_shndx == SHN_COMMON) | |
3726 | info.tsec = bfd_com_section_ptr; | |
3727 | else | |
3728 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3729 | } | |
252b5132 | 3730 | |
a7519a3c RH |
3731 | info.h = NULL; |
3732 | info.other = isym->st_other; | |
3733 | if (local_got_entries) | |
3734 | info.first_gotent = &local_got_entries[r_symndx]; | |
3735 | else | |
3736 | { | |
3737 | info.first_gotent = &info.gotent; | |
3738 | info.gotent = NULL; | |
3739 | } | |
252b5132 | 3740 | } |
a7519a3c RH |
3741 | else |
3742 | { | |
3743 | unsigned long indx; | |
3744 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3745 | |
a7519a3c RH |
3746 | indx = r_symndx - symtab_hdr->sh_info; |
3747 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3748 | BFD_ASSERT (h != NULL); | |
252b5132 | 3749 | |
a7519a3c RH |
3750 | while (h->root.root.type == bfd_link_hash_indirect |
3751 | || h->root.root.type == bfd_link_hash_warning) | |
3752 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3753 | |
a7519a3c RH |
3754 | /* If the symbol is undefined, we can't do anything with it. */ |
3755 | if (h->root.root.type == bfd_link_hash_undefined) | |
3756 | continue; | |
252b5132 | 3757 | |
a7519a3c RH |
3758 | /* If the symbol isn't defined in the current module, |
3759 | again we can't do anything. */ | |
3760 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3761 | { | |
3762 | info.tsec = bfd_abs_section_ptr; | |
3763 | symval = 0; | |
3764 | } | |
3765 | else if (!h->root.def_regular) | |
3766 | { | |
3767 | /* Except for TLSGD relocs, which can sometimes be | |
3768 | relaxed to GOTTPREL relocs. */ | |
3769 | if (r_type != R_ALPHA_TLSGD) | |
3770 | continue; | |
3771 | info.tsec = bfd_abs_section_ptr; | |
3772 | symval = 0; | |
3773 | } | |
3774 | else | |
3775 | { | |
3776 | info.tsec = h->root.root.u.def.section; | |
3777 | symval = h->root.root.u.def.value; | |
3778 | } | |
252b5132 | 3779 | |
a7519a3c RH |
3780 | info.h = h; |
3781 | info.other = h->root.other; | |
3782 | info.first_gotent = &h->got_entries; | |
3783 | } | |
252b5132 | 3784 | |
a7519a3c RH |
3785 | /* Search for the got entry to be used by this relocation. */ |
3786 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3787 | if (gotent->gotobj == info.gotobj | |
3788 | && gotent->reloc_type == r_type | |
3789 | && gotent->addend == irel->r_addend) | |
3790 | break; | |
3791 | info.gotent = gotent; | |
252b5132 | 3792 | |
a7519a3c RH |
3793 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3794 | symval += irel->r_addend; | |
252b5132 | 3795 | |
a7519a3c | 3796 | switch (r_type) |
252b5132 | 3797 | { |
a7519a3c RH |
3798 | case R_ALPHA_LITERAL: |
3799 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3800 | |
a7519a3c RH |
3801 | /* If there exist LITUSE relocations immediately following, this |
3802 | opens up all sorts of interesting optimizations, because we | |
3803 | now know every location that this address load is used. */ | |
3804 | if (irel+1 < irelend | |
3805 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3806 | { |
a7519a3c RH |
3807 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3808 | goto error_return; | |
252b5132 | 3809 | } |
a7519a3c RH |
3810 | else |
3811 | { | |
3812 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3813 | goto error_return; | |
3814 | } | |
3815 | break; | |
252b5132 | 3816 | |
a7519a3c RH |
3817 | case R_ALPHA_GOTDTPREL: |
3818 | case R_ALPHA_GOTTPREL: | |
3819 | BFD_ASSERT(info.gotent != NULL); | |
3820 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3821 | goto error_return; | |
3822 | break; | |
3823 | ||
3824 | case R_ALPHA_TLSGD: | |
3825 | case R_ALPHA_TLSLDM: | |
3826 | BFD_ASSERT(info.gotent != NULL); | |
3827 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3828 | r_type == R_ALPHA_TLSGD)) | |
3829 | goto error_return; | |
3830 | break; | |
252b5132 RH |
3831 | } |
3832 | } | |
3833 | ||
a7519a3c RH |
3834 | if (!elf64_alpha_size_plt_section (link_info)) |
3835 | return FALSE; | |
3836 | if (!elf64_alpha_size_got_sections (link_info)) | |
3837 | return FALSE; | |
3838 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
3839 | return FALSE; | |
dc810e39 | 3840 | |
a7519a3c RH |
3841 | if (isymbuf != NULL |
3842 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3843 | { | |
3844 | if (!link_info->keep_memory) | |
3845 | free (isymbuf); | |
3846 | else | |
252b5132 | 3847 | { |
a7519a3c RH |
3848 | /* Cache the symbols for elf_link_input_bfd. */ |
3849 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3850 | } |
a7519a3c | 3851 | } |
252b5132 | 3852 | |
a7519a3c RH |
3853 | if (info.contents != NULL |
3854 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3855 | { | |
3856 | if (!info.changed_contents && !link_info->keep_memory) | |
3857 | free (info.contents); | |
3858 | else | |
252b5132 | 3859 | { |
a7519a3c RH |
3860 | /* Cache the section contents for elf_link_input_bfd. */ |
3861 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3862 | } |
a7519a3c | 3863 | } |
252b5132 | 3864 | |
a7519a3c RH |
3865 | if (elf_section_data (sec)->relocs != internal_relocs) |
3866 | { | |
3867 | if (!info.changed_relocs) | |
3868 | free (internal_relocs); | |
3869 | else | |
3870 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3871 | } |
a7519a3c RH |
3872 | |
3873 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3874 | |
b34976b6 | 3875 | return TRUE; |
252b5132 | 3876 | |
a7519a3c RH |
3877 | error_return: |
3878 | if (isymbuf != NULL | |
3879 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3880 | free (isymbuf); | |
3881 | if (info.contents != NULL | |
3882 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3883 | free (info.contents); | |
3884 | if (internal_relocs != NULL | |
3885 | && elf_section_data (sec)->relocs != internal_relocs) | |
3886 | free (internal_relocs); | |
3887 | return FALSE; | |
3888 | } | |
3889 | \f | |
1bbc9cec RH |
3890 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3891 | into the next available slot in SREL. */ | |
3892 | ||
3893 | static void | |
a7519a3c RH |
3894 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3895 | asection *sec, asection *srel, bfd_vma offset, | |
3896 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3897 | { |
3898 | Elf_Internal_Rela outrel; | |
3899 | bfd_byte *loc; | |
3900 | ||
3901 | BFD_ASSERT (srel != NULL); | |
3902 | ||
3903 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3904 | outrel.r_addend = addend; | |
3905 | ||
3906 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3907 | if ((offset | 1) != (bfd_vma) -1) | |
3908 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3909 | else | |
3910 | memset (&outrel, 0, sizeof (outrel)); | |
3911 | ||
3912 | loc = srel->contents; | |
3913 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3914 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3915 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3916 | } |
3917 | ||
4a67a098 RH |
3918 | /* Relocate an Alpha ELF section for a relocatable link. |
3919 | ||
3920 | We don't have to change anything unless the reloc is against a section | |
3921 | symbol, in which case we have to adjust according to where the section | |
3922 | symbol winds up in the output section. */ | |
3923 | ||
b34976b6 | 3924 | static bfd_boolean |
a7519a3c RH |
3925 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3926 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3927 | bfd *input_bfd, asection *input_section, | |
3928 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3929 | Elf_Internal_Rela *relocs, | |
3930 | Elf_Internal_Sym *local_syms, | |
3931 | asection **local_sections) | |
4a67a098 RH |
3932 | { |
3933 | unsigned long symtab_hdr_sh_info; | |
3934 | Elf_Internal_Rela *rel; | |
3935 | Elf_Internal_Rela *relend; | |
b34976b6 | 3936 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
3937 | |
3938 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
3939 | ||
3940 | relend = relocs + input_section->reloc_count; | |
3941 | for (rel = relocs; rel < relend; rel++) | |
3942 | { | |
3943 | unsigned long r_symndx; | |
3944 | Elf_Internal_Sym *sym; | |
3945 | asection *sec; | |
3946 | unsigned long r_type; | |
3947 | ||
3948 | r_type = ELF64_R_TYPE(rel->r_info); | |
3949 | if (r_type >= R_ALPHA_max) | |
3950 | { | |
3951 | (*_bfd_error_handler) | |
d003868e AM |
3952 | (_("%B: unknown relocation type %d"), |
3953 | input_bfd, (int) r_type); | |
4a67a098 | 3954 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3955 | ret_val = FALSE; |
4a67a098 RH |
3956 | continue; |
3957 | } | |
3958 | ||
3959 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3960 | ||
3961 | /* The symbol associated with GPDISP and LITUSE is | |
3962 | immaterial. Only the addend is significant. */ | |
3963 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3964 | continue; | |
3965 | ||
3966 | if (r_symndx < symtab_hdr_sh_info) | |
3967 | { | |
3968 | sym = local_syms + r_symndx; | |
3969 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3970 | { | |
3971 | sec = local_sections[r_symndx]; | |
3972 | rel->r_addend += sec->output_offset + sym->st_value; | |
3973 | } | |
3974 | } | |
3975 | } | |
3976 | ||
3977 | return ret_val; | |
3978 | } | |
3979 | ||
252b5132 RH |
3980 | /* Relocate an Alpha ELF section. */ |
3981 | ||
b34976b6 | 3982 | static bfd_boolean |
a7519a3c RH |
3983 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3984 | bfd *input_bfd, asection *input_section, | |
3985 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
3986 | Elf_Internal_Sym *local_syms, | |
3987 | asection **local_sections) | |
252b5132 | 3988 | { |
4a67a098 | 3989 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
3990 | Elf_Internal_Rela *rel; |
3991 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
3992 | asection *sgot, *srel, *srelgot; |
3993 | bfd *dynobj, *gotobj; | |
3994 | bfd_vma gp, tp_base, dtp_base; | |
3995 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 3996 | bfd_boolean ret_val; |
252b5132 | 3997 | |
4a67a098 | 3998 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 3999 | if (info->relocatable) |
4a67a098 RH |
4000 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4001 | input_section, contents, relocs, | |
4002 | local_syms, local_sections); | |
4003 | ||
4004 | /* This is a final link. */ | |
4005 | ||
b34976b6 | 4006 | ret_val = TRUE; |
252b5132 | 4007 | |
4a67a098 | 4008 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 4009 | |
4a67a098 RH |
4010 | dynobj = elf_hash_table (info)->dynobj; |
4011 | if (dynobj) | |
4012 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4013 | else | |
4014 | srelgot = NULL; | |
4015 | ||
3241278a RH |
4016 | if (input_section->flags & SEC_ALLOC) |
4017 | { | |
4018 | const char *section_name; | |
4019 | section_name = (bfd_elf_string_from_elf_section | |
4020 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4021 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4022 | BFD_ASSERT(section_name != NULL); | |
4023 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4024 | } | |
4025 | else | |
4026 | srel = NULL; | |
3765b1be | 4027 | |
4a67a098 RH |
4028 | /* Find the gp value for this input bfd. */ |
4029 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4030 | if (gotobj) | |
4031 | { | |
4032 | sgot = alpha_elf_tdata (gotobj)->got; | |
4033 | gp = _bfd_get_gp_value (gotobj); | |
4034 | if (gp == 0) | |
252b5132 | 4035 | { |
4a67a098 RH |
4036 | gp = (sgot->output_section->vma |
4037 | + sgot->output_offset | |
4038 | + 0x8000); | |
4039 | _bfd_set_gp_value (gotobj, gp); | |
4040 | } | |
4041 | } | |
4042 | else | |
4043 | { | |
4044 | sgot = NULL; | |
4045 | gp = 0; | |
4046 | } | |
3765b1be | 4047 | |
4a67a098 RH |
4048 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4049 | ||
e1918d23 | 4050 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4051 | { |
e1918d23 AM |
4052 | dtp_base = alpha_get_dtprel_base (info); |
4053 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4054 | } |
4a67a098 RH |
4055 | else |
4056 | dtp_base = tp_base = 0; | |
252b5132 | 4057 | |
252b5132 | 4058 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4059 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4060 | { |
4a67a098 | 4061 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4062 | struct alpha_elf_got_entry *gotent; |
4063 | bfd_reloc_status_type r; | |
252b5132 RH |
4064 | reloc_howto_type *howto; |
4065 | unsigned long r_symndx; | |
4a67a098 RH |
4066 | Elf_Internal_Sym *sym = NULL; |
4067 | asection *sec = NULL; | |
3765b1be | 4068 | bfd_vma value; |
dc810e39 | 4069 | bfd_vma addend; |
b34976b6 AM |
4070 | bfd_boolean dynamic_symbol_p; |
4071 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4072 | unsigned long r_type; |
252b5132 RH |
4073 | |
4074 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4075 | if (r_type >= R_ALPHA_max) |
252b5132 | 4076 | { |
3765b1be | 4077 | (*_bfd_error_handler) |
d003868e AM |
4078 | (_("%B: unknown relocation type %d"), |
4079 | input_bfd, (int) r_type); | |
252b5132 | 4080 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4081 | ret_val = FALSE; |
3765b1be | 4082 | continue; |
252b5132 | 4083 | } |
252b5132 | 4084 | |
3765b1be | 4085 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4086 | r_symndx = ELF64_R_SYM(rel->r_info); |
4087 | ||
cc03ec80 RH |
4088 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4089 | reloc to the 0 symbol so that they all match. */ | |
4090 | if (r_type == R_ALPHA_TLSLDM) | |
4091 | r_symndx = 0; | |
4092 | ||
252b5132 RH |
4093 | if (r_symndx < symtab_hdr->sh_info) |
4094 | { | |
8517fae7 | 4095 | asection *msec; |
252b5132 RH |
4096 | sym = local_syms + r_symndx; |
4097 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4098 | msec = sec; |
4099 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4100 | |
cc03ec80 RH |
4101 | /* If this is a tp-relative relocation against sym 0, |
4102 | this is hackery from relax_section. Force the value to | |
f915360b | 4103 | be the tls module base. */ |
cc03ec80 RH |
4104 | if (r_symndx == 0 |
4105 | && (r_type == R_ALPHA_TLSLDM | |
4106 | || r_type == R_ALPHA_GOTTPREL | |
4107 | || r_type == R_ALPHA_TPREL64 | |
4108 | || r_type == R_ALPHA_TPRELHI | |
4109 | || r_type == R_ALPHA_TPRELLO | |
4110 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4111 | value = dtp_base; |
cc03ec80 | 4112 | |
4a67a098 RH |
4113 | if (local_got_entries) |
4114 | gotent = local_got_entries[r_symndx]; | |
4115 | else | |
4116 | gotent = NULL; | |
3765b1be RH |
4117 | |
4118 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4119 | unless it has been done already. */ | |
4120 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4121 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4122 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4123 | && gotent |
4124 | && !gotent->reloc_xlated) | |
3765b1be RH |
4125 | { |
4126 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4127 | |
4128 | for (ent = gotent; ent; ent = ent->next) | |
4129 | { | |
4130 | ent->reloc_xlated = 1; | |
4131 | if (ent->use_count == 0) | |
4132 | continue; | |
4133 | msec = sec; | |
4134 | ent->addend = | |
4135 | _bfd_merged_section_offset (output_bfd, &msec, | |
4136 | elf_section_data (sec)-> | |
4137 | sec_info, | |
753731ee | 4138 | sym->st_value + ent->addend); |
3765b1be RH |
4139 | ent->addend -= sym->st_value; |
4140 | ent->addend += msec->output_section->vma | |
4141 | + msec->output_offset | |
4142 | - sec->output_section->vma | |
4143 | - sec->output_offset; | |
4144 | } | |
4145 | } | |
4146 | ||
b34976b6 | 4147 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4148 | } |
4149 | else | |
4150 | { | |
560e09e9 NC |
4151 | bfd_boolean warned; |
4152 | bfd_boolean unresolved_reloc; | |
4153 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4154 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4155 | ||
4156 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4157 | r_symndx, symtab_hdr, sym_hashes, | |
4158 | hh, sec, value, | |
4159 | unresolved_reloc, warned); | |
560e09e9 NC |
4160 | |
4161 | if (warned) | |
4162 | continue; | |
252b5132 | 4163 | |
560e09e9 NC |
4164 | if (value == 0 |
4165 | && ! unresolved_reloc | |
4166 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4167 | undef_weak_ref = TRUE; |
3765b1be | 4168 | |
560e09e9 | 4169 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4170 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4171 | gotent = h->got_entries; | |
252b5132 | 4172 | } |
3765b1be | 4173 | |
252b5132 | 4174 | addend = rel->r_addend; |
3765b1be RH |
4175 | value += addend; |
4176 | ||
4177 | /* Search for the proper got entry. */ | |
4178 | for (; gotent ; gotent = gotent->next) | |
4179 | if (gotent->gotobj == gotobj | |
4180 | && gotent->reloc_type == r_type | |
4181 | && gotent->addend == addend) | |
4182 | break; | |
252b5132 RH |
4183 | |
4184 | switch (r_type) | |
4185 | { | |
4186 | case R_ALPHA_GPDISP: | |
4187 | { | |
4188 | bfd_byte *p_ldah, *p_lda; | |
4189 | ||
4190 | BFD_ASSERT(gp != 0); | |
4191 | ||
3765b1be RH |
4192 | value = (input_section->output_section->vma |
4193 | + input_section->output_offset | |
4194 | + rel->r_offset); | |
252b5132 | 4195 | |
3765b1be | 4196 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4197 | p_lda = p_ldah + rel->r_addend; |
4198 | ||
3765b1be | 4199 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4200 | p_ldah, p_lda); |
4201 | } | |
4202 | break; | |
4203 | ||
252b5132 | 4204 | case R_ALPHA_LITERAL: |
3765b1be RH |
4205 | BFD_ASSERT(sgot != NULL); |
4206 | BFD_ASSERT(gp != 0); | |
4207 | BFD_ASSERT(gotent != NULL); | |
4208 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4209 | |
3765b1be RH |
4210 | if (!gotent->reloc_done) |
4211 | { | |
4212 | gotent->reloc_done = 1; | |
252b5132 | 4213 | |
3765b1be RH |
4214 | bfd_put_64 (output_bfd, value, |
4215 | sgot->contents + gotent->got_offset); | |
252b5132 | 4216 | |
3765b1be RH |
4217 | /* If the symbol has been forced local, output a |
4218 | RELATIVE reloc, otherwise it will be handled in | |
4219 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4220 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4221 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4222 | gotent->got_offset, 0, | |
4223 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4224 | } |
252b5132 | 4225 | |
3765b1be RH |
4226 | value = (sgot->output_section->vma |
4227 | + sgot->output_offset | |
4228 | + gotent->got_offset); | |
4229 | value -= gp; | |
252b5132 RH |
4230 | goto default_reloc; |
4231 | ||
4232 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4233 | /* If the target section was a removed linkonce section, |
4234 | r_symndx will be zero. In this case, assume that the | |
4235 | switch will not be used, so don't fill it in. If we | |
4236 | do nothing here, we'll get relocation truncated messages, | |
4237 | due to the placement of the application above 4GB. */ | |
4238 | if (r_symndx == 0) | |
4239 | { | |
4240 | r = bfd_reloc_ok; | |
4241 | break; | |
4242 | } | |
4243 | /* FALLTHRU */ | |
4244 | ||
4245 | case R_ALPHA_GPREL16: | |
252b5132 | 4246 | case R_ALPHA_GPRELLOW: |
3765b1be | 4247 | if (dynamic_symbol_p) |
f16fbd61 RH |
4248 | { |
4249 | (*_bfd_error_handler) | |
d003868e AM |
4250 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4251 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4252 | ret_val = FALSE; |
f16fbd61 | 4253 | } |
252b5132 | 4254 | BFD_ASSERT(gp != 0); |
3765b1be | 4255 | value -= gp; |
252b5132 RH |
4256 | goto default_reloc; |
4257 | ||
4258 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4259 | if (dynamic_symbol_p) |
f16fbd61 RH |
4260 | { |
4261 | (*_bfd_error_handler) | |
d003868e AM |
4262 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4263 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4264 | ret_val = FALSE; |
f16fbd61 | 4265 | } |
252b5132 | 4266 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4267 | value -= gp; |
4268 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4269 | goto default_reloc; |
4270 | ||
252b5132 | 4271 | case R_ALPHA_HINT: |
f94952df RH |
4272 | /* A call to a dynamic symbol is definitely out of range of |
4273 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4274 | if (dynamic_symbol_p) |
f94952df RH |
4275 | { |
4276 | r = bfd_reloc_ok; | |
4277 | break; | |
4278 | } | |
3765b1be RH |
4279 | /* The regular PC-relative stuff measures from the start of |
4280 | the instruction rather than the end. */ | |
4281 | value -= 4; | |
4282 | goto default_reloc; | |
f94952df RH |
4283 | |
4284 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4285 | if (dynamic_symbol_p) |
4286 | { | |
4287 | (*_bfd_error_handler) | |
d003868e AM |
4288 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4289 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4290 | ret_val = FALSE; |
3765b1be | 4291 | } |
252b5132 RH |
4292 | /* The regular PC-relative stuff measures from the start of |
4293 | the instruction rather than the end. */ | |
3765b1be | 4294 | value -= 4; |
252b5132 RH |
4295 | goto default_reloc; |
4296 | ||
7793f4d0 RH |
4297 | case R_ALPHA_BRSGP: |
4298 | { | |
4299 | int other; | |
4300 | const char *name; | |
4301 | ||
4302 | /* The regular PC-relative stuff measures from the start of | |
4303 | the instruction rather than the end. */ | |
3765b1be | 4304 | value -= 4; |
7793f4d0 | 4305 | |
ccf00ab6 RH |
4306 | /* The source and destination gp must be the same. Note that |
4307 | the source will always have an assigned gp, since we forced | |
4308 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4309 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4310 | care not to crash if H is an undefined symbol. */ |
4311 | if (h != NULL && sec != NULL | |
4312 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4313 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4314 | { | |
7793f4d0 | 4315 | (*_bfd_error_handler) |
d003868e AM |
4316 | (_("%B: change in gp: BRSGP %s"), |
4317 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4318 | ret_val = FALSE; |
7793f4d0 RH |
4319 | } |
4320 | ||
4321 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4322 | if (h != NULL) | |
4323 | other = h->root.other; | |
4324 | else | |
4325 | other = sym->st_other; | |
4326 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4327 | { | |
4328 | case STO_ALPHA_NOPV: | |
4329 | break; | |
4330 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4331 | value += 8; |
7793f4d0 RH |
4332 | break; |
4333 | default: | |
4334 | if (h != NULL) | |
4335 | name = h->root.root.root.string; | |
4336 | else | |
4337 | { | |
4338 | name = (bfd_elf_string_from_elf_section | |
4339 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4340 | if (name == NULL) | |
4341 | name = _("<unknown>"); | |
4342 | else if (name[0] == 0) | |
4343 | name = bfd_section_name (input_bfd, sec); | |
4344 | } | |
4345 | (*_bfd_error_handler) | |
d003868e AM |
4346 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4347 | input_bfd, name); | |
b34976b6 | 4348 | ret_val = FALSE; |
7793f4d0 RH |
4349 | break; |
4350 | } | |
4351 | ||
4352 | goto default_reloc; | |
4353 | } | |
4354 | ||
252b5132 RH |
4355 | case R_ALPHA_REFLONG: |
4356 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4357 | case R_ALPHA_DTPREL64: |
4358 | case R_ALPHA_TPREL64: | |
252b5132 | 4359 | { |
1bbc9cec RH |
4360 | long dynindx, dyntype = r_type; |
4361 | bfd_vma dynaddend; | |
252b5132 RH |
4362 | |
4363 | /* Careful here to remember RELATIVE relocations for global | |
4364 | variables for symbolic shared objects. */ | |
4365 | ||
3765b1be | 4366 | if (dynamic_symbol_p) |
252b5132 RH |
4367 | { |
4368 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4369 | dynindx = h->root.dynindx; |
4370 | dynaddend = addend; | |
3765b1be RH |
4371 | addend = 0, value = 0; |
4372 | } | |
4373 | else if (r_type == R_ALPHA_DTPREL64) | |
4374 | { | |
e1918d23 | 4375 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4376 | value -= dtp_base; |
4377 | goto default_reloc; | |
4378 | } | |
4379 | else if (r_type == R_ALPHA_TPREL64) | |
4380 | { | |
e1918d23 | 4381 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4382 | if (!info->shared) |
4383 | { | |
4384 | value -= tp_base; | |
4385 | goto default_reloc; | |
4386 | } | |
4387 | dynindx = 0; | |
4388 | dynaddend = value - dtp_base; | |
252b5132 | 4389 | } |
ec338859 AM |
4390 | else if (info->shared |
4391 | && r_symndx != 0 | |
d6ad34f6 RH |
4392 | && (input_section->flags & SEC_ALLOC) |
4393 | && !undef_weak_ref) | |
252b5132 | 4394 | { |
3765b1be RH |
4395 | if (r_type == R_ALPHA_REFLONG) |
4396 | { | |
4397 | (*_bfd_error_handler) | |
d003868e AM |
4398 | (_("%B: unhandled dynamic relocation against %s"), |
4399 | input_bfd, | |
3765b1be | 4400 | h->root.root.root.string); |
b34976b6 | 4401 | ret_val = FALSE; |
3765b1be | 4402 | } |
1bbc9cec RH |
4403 | dynindx = 0; |
4404 | dyntype = R_ALPHA_RELATIVE; | |
4405 | dynaddend = value; | |
252b5132 RH |
4406 | } |
4407 | else | |
4408 | goto default_reloc; | |
4409 | ||
3241278a RH |
4410 | if (input_section->flags & SEC_ALLOC) |
4411 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4412 | srel, rel->r_offset, dynindx, | |
4413 | dyntype, dynaddend); | |
252b5132 RH |
4414 | } |
4415 | goto default_reloc; | |
4416 | ||
3765b1be | 4417 | case R_ALPHA_SREL16: |
84de6048 RH |
4418 | case R_ALPHA_SREL32: |
4419 | case R_ALPHA_SREL64: | |
3765b1be RH |
4420 | if (dynamic_symbol_p) |
4421 | { | |
4422 | (*_bfd_error_handler) | |
d003868e AM |
4423 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4424 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4425 | ret_val = FALSE; |
3765b1be | 4426 | } |
d6ad34f6 RH |
4427 | else if ((info->shared || info->pie) && undef_weak_ref) |
4428 | { | |
4429 | (*_bfd_error_handler) | |
4430 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4431 | input_bfd, h->root.root.root.string); | |
4432 | ret_val = FALSE; | |
4433 | } | |
4434 | ||
3765b1be | 4435 | |
84de6048 RH |
4436 | /* ??? .eh_frame references to discarded sections will be smashed |
4437 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4438 | NULL to be encoded as 0 in any format, so this works here. */ | |
4439 | if (r_symndx == 0) | |
4440 | howto = (elf64_alpha_howto_table | |
4441 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4442 | goto default_reloc; | |
4443 | ||
3765b1be RH |
4444 | case R_ALPHA_TLSLDM: |
4445 | /* Ignore the symbol for the relocation. The result is always | |
4446 | the current module. */ | |
4447 | dynamic_symbol_p = 0; | |
4448 | /* FALLTHRU */ | |
4449 | ||
4450 | case R_ALPHA_TLSGD: | |
4451 | if (!gotent->reloc_done) | |
4452 | { | |
4453 | gotent->reloc_done = 1; | |
4454 | ||
4455 | /* Note that the module index for the main program is 1. */ | |
4456 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4457 | sgot->contents + gotent->got_offset); | |
4458 | ||
4459 | /* If the symbol has been forced local, output a | |
4460 | DTPMOD64 reloc, otherwise it will be handled in | |
4461 | finish_dynamic_symbol. */ | |
4462 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4463 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4464 | gotent->got_offset, 0, | |
4465 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4466 | |
4467 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4468 | value = 0; | |
4469 | else | |
4470 | { | |
e1918d23 | 4471 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4472 | value -= dtp_base; |
4473 | } | |
4474 | bfd_put_64 (output_bfd, value, | |
4475 | sgot->contents + gotent->got_offset + 8); | |
4476 | } | |
4477 | ||
4478 | value = (sgot->output_section->vma | |
4479 | + sgot->output_offset | |
4480 | + gotent->got_offset); | |
4481 | value -= gp; | |
4482 | goto default_reloc; | |
4483 | ||
4484 | case R_ALPHA_DTPRELHI: | |
4485 | case R_ALPHA_DTPRELLO: | |
4486 | case R_ALPHA_DTPREL16: | |
4487 | if (dynamic_symbol_p) | |
4488 | { | |
4489 | (*_bfd_error_handler) | |
d003868e AM |
4490 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4491 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4492 | ret_val = FALSE; |
3765b1be | 4493 | } |
e1918d23 | 4494 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4495 | value -= dtp_base; |
9e756d64 RH |
4496 | if (r_type == R_ALPHA_DTPRELHI) |
4497 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4498 | goto default_reloc; |
4499 | ||
4500 | case R_ALPHA_TPRELHI: | |
4501 | case R_ALPHA_TPRELLO: | |
4502 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4503 | if (info->shared) |
4504 | { | |
4505 | (*_bfd_error_handler) | |
d003868e AM |
4506 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4507 | input_bfd); | |
b34976b6 | 4508 | ret_val = FALSE; |
9e756d64 RH |
4509 | } |
4510 | else if (dynamic_symbol_p) | |
3765b1be RH |
4511 | { |
4512 | (*_bfd_error_handler) | |
d003868e AM |
4513 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4514 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4515 | ret_val = FALSE; |
3765b1be | 4516 | } |
e1918d23 | 4517 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4518 | value -= tp_base; |
9e756d64 RH |
4519 | if (r_type == R_ALPHA_TPRELHI) |
4520 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4521 | goto default_reloc; |
4522 | ||
4523 | case R_ALPHA_GOTDTPREL: | |
4524 | case R_ALPHA_GOTTPREL: | |
4525 | BFD_ASSERT(sgot != NULL); | |
4526 | BFD_ASSERT(gp != 0); | |
4527 | BFD_ASSERT(gotent != NULL); | |
4528 | BFD_ASSERT(gotent->use_count >= 1); | |
4529 | ||
4530 | if (!gotent->reloc_done) | |
4531 | { | |
4532 | gotent->reloc_done = 1; | |
4533 | ||
4534 | if (dynamic_symbol_p) | |
4535 | value = 0; | |
4536 | else | |
4537 | { | |
e1918d23 | 4538 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4539 | if (r_type == R_ALPHA_GOTDTPREL) |
4540 | value -= dtp_base; | |
4541 | else if (!info->shared) | |
4542 | value -= tp_base; | |
4543 | else | |
4544 | { | |
4545 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4546 | gotent->got_offset, 0, | |
4547 | R_ALPHA_TPREL64, | |
4548 | value - dtp_base); | |
4549 | value = 0; | |
4550 | } | |
3765b1be RH |
4551 | } |
4552 | bfd_put_64 (output_bfd, value, | |
4553 | sgot->contents + gotent->got_offset); | |
4554 | } | |
4555 | ||
4556 | value = (sgot->output_section->vma | |
4557 | + sgot->output_offset | |
4558 | + gotent->got_offset); | |
4559 | value -= gp; | |
4560 | goto default_reloc; | |
4561 | ||
252b5132 RH |
4562 | default: |
4563 | default_reloc: | |
4564 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4565 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4566 | break; |
4567 | } | |
4568 | ||
4569 | switch (r) | |
4570 | { | |
4571 | case bfd_reloc_ok: | |
4572 | break; | |
4573 | ||
4574 | case bfd_reloc_overflow: | |
4575 | { | |
4576 | const char *name; | |
4577 | ||
ed4de5e2 JJ |
4578 | /* Don't warn if the overflow is due to pc relative reloc |
4579 | against discarded section. Section optimization code should | |
4580 | handle it. */ | |
4581 | ||
4582 | if (r_symndx < symtab_hdr->sh_info | |
4583 | && sec != NULL && howto->pc_relative | |
4584 | && elf_discarded_section (sec)) | |
4585 | break; | |
4586 | ||
252b5132 | 4587 | if (h != NULL) |
dfeffb9f | 4588 | name = NULL; |
252b5132 RH |
4589 | else |
4590 | { | |
4591 | name = (bfd_elf_string_from_elf_section | |
4592 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4593 | if (name == NULL) | |
b34976b6 | 4594 | return FALSE; |
252b5132 RH |
4595 | if (*name == '\0') |
4596 | name = bfd_section_name (input_bfd, sec); | |
4597 | } | |
4598 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4599 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4600 | (bfd_vma) 0, input_bfd, input_section, | |
4601 | rel->r_offset))) | |
b34976b6 | 4602 | ret_val = FALSE; |
252b5132 RH |
4603 | } |
4604 | break; | |
4605 | ||
4606 | default: | |
4607 | case bfd_reloc_outofrange: | |
4608 | abort (); | |
4609 | } | |
4610 | } | |
4611 | ||
f16fbd61 | 4612 | return ret_val; |
252b5132 RH |
4613 | } |
4614 | ||
4615 | /* Finish up dynamic symbol handling. We set the contents of various | |
4616 | dynamic sections here. */ | |
4617 | ||
b34976b6 | 4618 | static bfd_boolean |
a7519a3c RH |
4619 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4620 | struct elf_link_hash_entry *h, | |
4621 | Elf_Internal_Sym *sym) | |
252b5132 | 4622 | { |
6ec7057a | 4623 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 RH |
4624 | bfd *dynobj = elf_hash_table(info)->dynobj; |
4625 | ||
6ec7057a | 4626 | if (h->needs_plt) |
252b5132 RH |
4627 | { |
4628 | /* Fill in the .plt entry for this symbol. */ | |
4629 | asection *splt, *sgot, *srel; | |
4630 | Elf_Internal_Rela outrel; | |
947216bf | 4631 | bfd_byte *loc; |
252b5132 RH |
4632 | bfd_vma got_addr, plt_addr; |
4633 | bfd_vma plt_index; | |
4634 | struct alpha_elf_got_entry *gotent; | |
4635 | ||
4636 | BFD_ASSERT (h->dynindx != -1); | |
4637 | ||
252b5132 RH |
4638 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
4639 | BFD_ASSERT (splt != NULL); | |
4640 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4641 | BFD_ASSERT (srel != NULL); | |
252b5132 | 4642 | |
6ec7057a RH |
4643 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4644 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4645 | && gotent->use_count > 0) | |
4646 | { | |
4647 | unsigned int insn; | |
4648 | int disp; | |
252b5132 | 4649 | |
6ec7057a RH |
4650 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4651 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4652 | |
6ec7057a RH |
4653 | BFD_ASSERT (gotent->got_offset != -1); |
4654 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4655 | |
6ec7057a RH |
4656 | got_addr = (sgot->output_section->vma |
4657 | + sgot->output_offset | |
4658 | + gotent->got_offset); | |
4659 | plt_addr = (splt->output_section->vma | |
4660 | + splt->output_offset | |
4661 | + gotent->plt_offset); | |
252b5132 | 4662 | |
6ec7057a | 4663 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4664 | |
6ec7057a RH |
4665 | /* Fill in the entry in the procedure linkage table. */ |
4666 | if (elf64_alpha_use_secureplt) | |
4667 | { | |
4668 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4669 | insn = INSN_AD (INSN_BR, 31, disp); | |
4670 | bfd_put_32 (output_bfd, insn, | |
4671 | splt->contents + gotent->plt_offset); | |
252b5132 | 4672 | |
6ec7057a RH |
4673 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4674 | / NEW_PLT_ENTRY_SIZE); | |
4675 | } | |
4676 | else | |
4677 | { | |
4678 | disp = -(gotent->plt_offset + 4); | |
4679 | insn = INSN_AD (INSN_BR, 28, disp); | |
4680 | bfd_put_32 (output_bfd, insn, | |
4681 | splt->contents + gotent->plt_offset); | |
4682 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4683 | splt->contents + gotent->plt_offset + 4); | |
4684 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4685 | splt->contents + gotent->plt_offset + 8); | |
4686 | ||
4687 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4688 | / OLD_PLT_ENTRY_SIZE); | |
4689 | } | |
252b5132 | 4690 | |
6ec7057a RH |
4691 | /* Fill in the entry in the .rela.plt section. */ |
4692 | outrel.r_offset = got_addr; | |
4693 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4694 | outrel.r_addend = 0; | |
252b5132 | 4695 | |
6ec7057a RH |
4696 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4697 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4698 | |
6ec7057a RH |
4699 | /* Fill in the entry in the .got. */ |
4700 | bfd_put_64 (output_bfd, plt_addr, | |
4701 | sgot->contents + gotent->got_offset); | |
4702 | } | |
252b5132 RH |
4703 | } |
4704 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4705 | { | |
4706 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4707 | asection *srel; | |
252b5132 RH |
4708 | struct alpha_elf_got_entry *gotent; |
4709 | ||
4710 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4711 | BFD_ASSERT (srel != NULL); | |
4712 | ||
252b5132 RH |
4713 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4714 | gotent != NULL; | |
4715 | gotent = gotent->next) | |
4716 | { | |
f44f99a5 | 4717 | asection *sgot; |
1bbc9cec | 4718 | long r_type; |
3765b1be | 4719 | |
f44f99a5 RH |
4720 | if (gotent->use_count == 0) |
4721 | continue; | |
4722 | ||
4723 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4724 | |
4725 | r_type = gotent->reloc_type; | |
4726 | switch (r_type) | |
4727 | { | |
4728 | case R_ALPHA_LITERAL: | |
4729 | r_type = R_ALPHA_GLOB_DAT; | |
4730 | break; | |
4731 | case R_ALPHA_TLSGD: | |
4732 | r_type = R_ALPHA_DTPMOD64; | |
4733 | break; | |
4734 | case R_ALPHA_GOTDTPREL: | |
4735 | r_type = R_ALPHA_DTPREL64; | |
4736 | break; | |
4737 | case R_ALPHA_GOTTPREL: | |
4738 | r_type = R_ALPHA_TPREL64; | |
4739 | break; | |
4740 | case R_ALPHA_TLSLDM: | |
4741 | default: | |
4742 | abort (); | |
4743 | } | |
4744 | ||
1bbc9cec RH |
4745 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4746 | gotent->got_offset, h->dynindx, | |
4747 | r_type, gotent->addend); | |
3765b1be RH |
4748 | |
4749 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4750 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4751 | gotent->got_offset + 8, h->dynindx, | |
4752 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4753 | } |
4754 | } | |
4755 | ||
4756 | /* Mark some specially defined symbols as absolute. */ | |
4757 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4758 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4759 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4760 | sym->st_shndx = SHN_ABS; | |
4761 | ||
b34976b6 | 4762 | return TRUE; |
252b5132 RH |
4763 | } |
4764 | ||
4765 | /* Finish up the dynamic sections. */ | |
4766 | ||
b34976b6 | 4767 | static bfd_boolean |
a7519a3c RH |
4768 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4769 | struct bfd_link_info *info) | |
252b5132 RH |
4770 | { |
4771 | bfd *dynobj; | |
4772 | asection *sdyn; | |
4773 | ||
4774 | dynobj = elf_hash_table (info)->dynobj; | |
4775 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4776 | ||
4777 | if (elf_hash_table (info)->dynamic_sections_created) | |
4778 | { | |
6ec7057a | 4779 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4780 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4781 | bfd_vma plt_vma, gotplt_vma; |
252b5132 RH |
4782 | |
4783 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6ec7057a | 4784 | srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
252b5132 RH |
4785 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4786 | ||
6ec7057a RH |
4787 | plt_vma = splt->output_section->vma + splt->output_offset; |
4788 | ||
4789 | gotplt_vma = 0; | |
4790 | if (elf64_alpha_use_secureplt) | |
4791 | { | |
4792 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4793 | BFD_ASSERT (sgotplt != NULL); | |
4794 | if (sgotplt->size > 0) | |
4795 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4796 | } | |
4797 | ||
252b5132 | 4798 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4799 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4800 | for (; dyncon < dynconend; dyncon++) |
4801 | { | |
4802 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4803 | |
4804 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4805 | ||
4806 | switch (dyn.d_tag) | |
4807 | { | |
4808 | case DT_PLTGOT: | |
6ec7057a RH |
4809 | dyn.d_un.d_ptr |
4810 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4811 | break; | |
252b5132 | 4812 | case DT_PLTRELSZ: |
6ec7057a RH |
4813 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
4814 | break; | |
252b5132 | 4815 | case DT_JMPREL: |
6ec7057a RH |
4816 | dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; |
4817 | break; | |
252b5132 RH |
4818 | |
4819 | case DT_RELASZ: | |
4820 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4821 | that RELASZ should not include JMPREL. This is not what | |
4822 | the rest of the BFD does. It is, however, what the | |
4823 | glibc ld.so wants. Do this fixup here until we found | |
4824 | out who is right. */ | |
6ec7057a RH |
4825 | if (srelaplt) |
4826 | dyn.d_un.d_val -= srelaplt->size; | |
252b5132 RH |
4827 | break; |
4828 | } | |
4829 | ||
4830 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4831 | } | |
4832 | ||
6ec7057a | 4833 | /* Initialize the plt header. */ |
eea6121a | 4834 | if (splt->size > 0) |
252b5132 | 4835 | { |
6ec7057a RH |
4836 | unsigned int insn; |
4837 | int ofs; | |
4838 | ||
4839 | if (elf64_alpha_use_secureplt) | |
4840 | { | |
4841 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
4842 | ||
4843 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
4844 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4845 | ||
4846 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
4847 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4848 | ||
4849 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
4850 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4851 | ||
4852 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
4853 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4854 | ||
4855 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
4856 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
4857 | ||
4858 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
4859 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
4860 | ||
4861 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
4862 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
4863 | ||
4864 | insn = INSN_AB (INSN_JMP, 31, 27); | |
4865 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
4866 | ||
4867 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
4868 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
4869 | } | |
4870 | else | |
4871 | { | |
4872 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
4873 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4874 | ||
4875 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
4876 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4877 | ||
4878 | insn = INSN_UNOP; | |
4879 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4880 | ||
4881 | insn = INSN_AB (INSN_JMP, 27, 27); | |
4882 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4883 | ||
4884 | /* The next two words will be filled in by ld.so. */ | |
4885 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
4886 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
4887 | } | |
252b5132 | 4888 | |
eecdbe52 | 4889 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4890 | } |
4891 | } | |
4892 | ||
b34976b6 | 4893 | return TRUE; |
252b5132 RH |
4894 | } |
4895 | ||
96e2734b RH |
4896 | /* We need to use a special link routine to handle the .mdebug section. |
4897 | We need to merge all instances of these sections together, not write | |
4898 | them all out sequentially. */ | |
252b5132 | 4899 | |
b34976b6 | 4900 | static bfd_boolean |
a7519a3c | 4901 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4902 | { |
4903 | asection *o; | |
4904 | struct bfd_link_order *p; | |
96e2734b | 4905 | asection *mdebug_sec; |
252b5132 RH |
4906 | struct ecoff_debug_info debug; |
4907 | const struct ecoff_debug_swap *swap | |
4908 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4909 | HDRR *symhdr = &debug.symbolic_header; | |
4910 | PTR mdebug_handle = NULL; | |
4911 | ||
96e2734b | 4912 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4913 | mdebug_sec = NULL; |
252b5132 RH |
4914 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4915 | { | |
252b5132 RH |
4916 | if (strcmp (o->name, ".mdebug") == 0) |
4917 | { | |
4918 | struct extsym_info einfo; | |
4919 | ||
4920 | /* We have found the .mdebug section in the output file. | |
4921 | Look through all the link_orders comprising it and merge | |
4922 | the information together. */ | |
4923 | symhdr->magic = swap->sym_magic; | |
4924 | /* FIXME: What should the version stamp be? */ | |
4925 | symhdr->vstamp = 0; | |
4926 | symhdr->ilineMax = 0; | |
4927 | symhdr->cbLine = 0; | |
4928 | symhdr->idnMax = 0; | |
4929 | symhdr->ipdMax = 0; | |
4930 | symhdr->isymMax = 0; | |
4931 | symhdr->ioptMax = 0; | |
4932 | symhdr->iauxMax = 0; | |
4933 | symhdr->issMax = 0; | |
4934 | symhdr->issExtMax = 0; | |
4935 | symhdr->ifdMax = 0; | |
4936 | symhdr->crfd = 0; | |
4937 | symhdr->iextMax = 0; | |
4938 | ||
4939 | /* We accumulate the debugging information itself in the | |
4940 | debug_info structure. */ | |
4941 | debug.line = NULL; | |
4942 | debug.external_dnr = NULL; | |
4943 | debug.external_pdr = NULL; | |
4944 | debug.external_sym = NULL; | |
4945 | debug.external_opt = NULL; | |
4946 | debug.external_aux = NULL; | |
4947 | debug.ss = NULL; | |
4948 | debug.ssext = debug.ssext_end = NULL; | |
4949 | debug.external_fdr = NULL; | |
4950 | debug.external_rfd = NULL; | |
4951 | debug.external_ext = debug.external_ext_end = NULL; | |
4952 | ||
4953 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4954 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4955 | return FALSE; |
252b5132 RH |
4956 | |
4957 | if (1) | |
4958 | { | |
4959 | asection *s; | |
4960 | EXTR esym; | |
52b9d213 | 4961 | bfd_vma last = 0; |
252b5132 RH |
4962 | unsigned int i; |
4963 | static const char * const name[] = | |
4964 | { | |
4965 | ".text", ".init", ".fini", ".data", | |
4966 | ".rodata", ".sdata", ".sbss", ".bss" | |
4967 | }; | |
4968 | static const int sc[] = { scText, scInit, scFini, scData, | |
4969 | scRData, scSData, scSBss, scBss }; | |
4970 | ||
4971 | esym.jmptbl = 0; | |
4972 | esym.cobol_main = 0; | |
4973 | esym.weakext = 0; | |
4974 | esym.reserved = 0; | |
4975 | esym.ifd = ifdNil; | |
4976 | esym.asym.iss = issNil; | |
4977 | esym.asym.st = stLocal; | |
4978 | esym.asym.reserved = 0; | |
4979 | esym.asym.index = indexNil; | |
4980 | for (i = 0; i < 8; i++) | |
4981 | { | |
4982 | esym.asym.sc = sc[i]; | |
4983 | s = bfd_get_section_by_name (abfd, name[i]); | |
4984 | if (s != NULL) | |
4985 | { | |
4986 | esym.asym.value = s->vma; | |
eea6121a | 4987 | last = s->vma + s->size; |
252b5132 RH |
4988 | } |
4989 | else | |
4990 | esym.asym.value = last; | |
4991 | ||
4992 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4993 | name[i], &esym)) | |
b34976b6 | 4994 | return FALSE; |
252b5132 RH |
4995 | } |
4996 | } | |
4997 | ||
8423293d | 4998 | for (p = o->map_head.link_order; |
252b5132 RH |
4999 | p != (struct bfd_link_order *) NULL; |
5000 | p = p->next) | |
5001 | { | |
5002 | asection *input_section; | |
5003 | bfd *input_bfd; | |
5004 | const struct ecoff_debug_swap *input_swap; | |
5005 | struct ecoff_debug_info input_debug; | |
5006 | char *eraw_src; | |
5007 | char *eraw_end; | |
5008 | ||
5009 | if (p->type != bfd_indirect_link_order) | |
5010 | { | |
fd96f80f | 5011 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5012 | continue; |
5013 | abort (); | |
5014 | } | |
5015 | ||
5016 | input_section = p->u.indirect.section; | |
5017 | input_bfd = input_section->owner; | |
5018 | ||
5019 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5020 | || (get_elf_backend_data (input_bfd) | |
5021 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5022 | { | |
5023 | /* I don't know what a non ALPHA ELF bfd would be | |
5024 | doing with a .mdebug section, but I don't really | |
5025 | want to deal with it. */ | |
5026 | continue; | |
5027 | } | |
5028 | ||
5029 | input_swap = (get_elf_backend_data (input_bfd) | |
5030 | ->elf_backend_ecoff_debug_swap); | |
5031 | ||
eea6121a | 5032 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5033 | |
5034 | /* The ECOFF linking code expects that we have already | |
5035 | read in the debugging information and set up an | |
5036 | ecoff_debug_info structure, so we do that now. */ | |
5037 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5038 | &input_debug)) | |
b34976b6 | 5039 | return FALSE; |
252b5132 RH |
5040 | |
5041 | if (! (bfd_ecoff_debug_accumulate | |
5042 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5043 | &input_debug, input_swap, info))) | |
b34976b6 | 5044 | return FALSE; |
252b5132 RH |
5045 | |
5046 | /* Loop through the external symbols. For each one with | |
5047 | interesting information, try to find the symbol in | |
5048 | the linker global hash table and save the information | |
5049 | for the output external symbols. */ | |
5050 | eraw_src = input_debug.external_ext; | |
5051 | eraw_end = (eraw_src | |
5052 | + (input_debug.symbolic_header.iextMax | |
5053 | * input_swap->external_ext_size)); | |
5054 | for (; | |
5055 | eraw_src < eraw_end; | |
5056 | eraw_src += input_swap->external_ext_size) | |
5057 | { | |
5058 | EXTR ext; | |
5059 | const char *name; | |
5060 | struct alpha_elf_link_hash_entry *h; | |
5061 | ||
5062 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5063 | if (ext.asym.sc == scNil | |
5064 | || ext.asym.sc == scUndefined | |
5065 | || ext.asym.sc == scSUndefined) | |
5066 | continue; | |
5067 | ||
5068 | name = input_debug.ssext + ext.asym.iss; | |
5069 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5070 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5071 | if (h == NULL || h->esym.ifd != -2) |
5072 | continue; | |
5073 | ||
5074 | if (ext.ifd != -1) | |
5075 | { | |
5076 | BFD_ASSERT (ext.ifd | |
5077 | < input_debug.symbolic_header.ifdMax); | |
5078 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5079 | } | |
5080 | ||
5081 | h->esym = ext; | |
5082 | } | |
5083 | ||
5084 | /* Free up the information we just read. */ | |
5085 | free (input_debug.line); | |
5086 | free (input_debug.external_dnr); | |
5087 | free (input_debug.external_pdr); | |
5088 | free (input_debug.external_sym); | |
5089 | free (input_debug.external_opt); | |
5090 | free (input_debug.external_aux); | |
5091 | free (input_debug.ss); | |
5092 | free (input_debug.ssext); | |
5093 | free (input_debug.external_fdr); | |
5094 | free (input_debug.external_rfd); | |
5095 | free (input_debug.external_ext); | |
5096 | ||
5097 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5098 | elf_link_input_bfd ignores this section. */ | |
5099 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5100 | } | |
5101 | ||
252b5132 RH |
5102 | /* Build the external symbol information. */ |
5103 | einfo.abfd = abfd; | |
5104 | einfo.info = info; | |
5105 | einfo.debug = &debug; | |
5106 | einfo.swap = swap; | |
b34976b6 | 5107 | einfo.failed = FALSE; |
252b5132 RH |
5108 | elf_link_hash_traverse (elf_hash_table (info), |
5109 | elf64_alpha_output_extsym, | |
5110 | (PTR) &einfo); | |
5111 | if (einfo.failed) | |
b34976b6 | 5112 | return FALSE; |
252b5132 RH |
5113 | |
5114 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5115 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5116 | |
5117 | /* Skip this section later on (I don't think this currently | |
5118 | matters, but someday it might). */ | |
8423293d | 5119 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5120 | |
5121 | mdebug_sec = o; | |
5122 | } | |
252b5132 RH |
5123 | } |
5124 | ||
5125 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5126 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5127 | return FALSE; |
252b5132 RH |
5128 | |
5129 | /* Now write out the computed sections. */ | |
5130 | ||
5131 | /* The .got subsections... */ | |
5132 | { | |
5133 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5134 | for (i = alpha_elf_hash_table(info)->got_list; | |
5135 | i != NULL; | |
5136 | i = alpha_elf_tdata(i)->got_link_next) | |
5137 | { | |
5138 | asection *sgot; | |
5139 | ||
5140 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5141 | if (i == dynobj) | |
5142 | continue; | |
5143 | ||
5144 | sgot = alpha_elf_tdata(i)->got; | |
5145 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5146 | sgot->contents, |
5147 | (file_ptr) sgot->output_offset, | |
eea6121a | 5148 | sgot->size)) |
b34976b6 | 5149 | return FALSE; |
252b5132 RH |
5150 | } |
5151 | } | |
5152 | ||
252b5132 RH |
5153 | if (mdebug_sec != (asection *) NULL) |
5154 | { | |
5155 | BFD_ASSERT (abfd->output_has_begun); | |
5156 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5157 | swap, info, | |
5158 | mdebug_sec->filepos)) | |
b34976b6 | 5159 | return FALSE; |
252b5132 RH |
5160 | |
5161 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5162 | } | |
5163 | ||
b34976b6 | 5164 | return TRUE; |
252b5132 | 5165 | } |
fcfbdf31 JJ |
5166 | |
5167 | static enum elf_reloc_type_class | |
a7519a3c | 5168 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5169 | { |
f51e552e | 5170 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5171 | { |
5172 | case R_ALPHA_RELATIVE: | |
5173 | return reloc_class_relative; | |
5174 | case R_ALPHA_JMP_SLOT: | |
5175 | return reloc_class_plt; | |
5176 | case R_ALPHA_COPY: | |
5177 | return reloc_class_copy; | |
5178 | default: | |
5179 | return reloc_class_normal; | |
5180 | } | |
5181 | } | |
252b5132 | 5182 | \f |
7f4d3958 L |
5183 | static struct bfd_elf_special_section const |
5184 | alpha_special_sections_s[]= | |
2f89ff8d | 5185 | { |
7dcb9820 AM |
5186 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5187 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5188 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5189 | }; |
5190 | ||
7f4d3958 L |
5191 | static struct bfd_elf_special_section const * |
5192 | elf64_alpha_special_sections[27] = | |
5193 | { | |
5194 | NULL, /* 'a' */ | |
5195 | NULL, /* 'b' */ | |
5196 | NULL, /* 'c' */ | |
5197 | NULL, /* 'd' */ | |
5198 | NULL, /* 'e' */ | |
5199 | NULL, /* 'f' */ | |
5200 | NULL, /* 'g' */ | |
5201 | NULL, /* 'h' */ | |
5202 | NULL, /* 'i' */ | |
5203 | NULL, /* 'j' */ | |
5204 | NULL, /* 'k' */ | |
5205 | NULL, /* 'l' */ | |
5206 | NULL, /* 'm' */ | |
5207 | NULL, /* 'n' */ | |
5208 | NULL, /* 'o' */ | |
5209 | NULL, /* 'p' */ | |
5210 | NULL, /* 'q' */ | |
5211 | NULL, /* 'r' */ | |
5212 | alpha_special_sections_s, /* 's' */ | |
5213 | NULL, /* 't' */ | |
5214 | NULL, /* 'u' */ | |
5215 | NULL, /* 'v' */ | |
5216 | NULL, /* 'w' */ | |
5217 | NULL, /* 'x' */ | |
5218 | NULL, /* 'y' */ | |
5219 | NULL, /* 'z' */ | |
5220 | NULL /* other */ | |
5221 | }; | |
5222 | ||
252b5132 RH |
5223 | /* ECOFF swapping routines. These are used when dealing with the |
5224 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5225 | from elf32-mips.c. */ |
252b5132 RH |
5226 | static const struct ecoff_debug_swap |
5227 | elf64_alpha_ecoff_debug_swap = | |
5228 | { | |
5229 | /* Symbol table magic number. */ | |
5230 | magicSym2, | |
5231 | /* Alignment of debugging information. E.g., 4. */ | |
5232 | 8, | |
5233 | /* Sizes of external symbolic information. */ | |
5234 | sizeof (struct hdr_ext), | |
5235 | sizeof (struct dnr_ext), | |
5236 | sizeof (struct pdr_ext), | |
5237 | sizeof (struct sym_ext), | |
5238 | sizeof (struct opt_ext), | |
5239 | sizeof (struct fdr_ext), | |
5240 | sizeof (struct rfd_ext), | |
5241 | sizeof (struct ext_ext), | |
5242 | /* Functions to swap in external symbolic data. */ | |
5243 | ecoff_swap_hdr_in, | |
5244 | ecoff_swap_dnr_in, | |
5245 | ecoff_swap_pdr_in, | |
5246 | ecoff_swap_sym_in, | |
5247 | ecoff_swap_opt_in, | |
5248 | ecoff_swap_fdr_in, | |
5249 | ecoff_swap_rfd_in, | |
5250 | ecoff_swap_ext_in, | |
5251 | _bfd_ecoff_swap_tir_in, | |
5252 | _bfd_ecoff_swap_rndx_in, | |
5253 | /* Functions to swap out external symbolic data. */ | |
5254 | ecoff_swap_hdr_out, | |
5255 | ecoff_swap_dnr_out, | |
5256 | ecoff_swap_pdr_out, | |
5257 | ecoff_swap_sym_out, | |
5258 | ecoff_swap_opt_out, | |
5259 | ecoff_swap_fdr_out, | |
5260 | ecoff_swap_rfd_out, | |
5261 | ecoff_swap_ext_out, | |
5262 | _bfd_ecoff_swap_tir_out, | |
5263 | _bfd_ecoff_swap_rndx_out, | |
5264 | /* Function to read in symbolic data. */ | |
5265 | elf64_alpha_read_ecoff_info | |
5266 | }; | |
5267 | \f | |
70bcb145 JW |
5268 | /* Use a non-standard hash bucket size of 8. */ |
5269 | ||
562ace6b | 5270 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5271 | { |
5272 | sizeof (Elf64_External_Ehdr), | |
5273 | sizeof (Elf64_External_Phdr), | |
5274 | sizeof (Elf64_External_Shdr), | |
5275 | sizeof (Elf64_External_Rel), | |
5276 | sizeof (Elf64_External_Rela), | |
5277 | sizeof (Elf64_External_Sym), | |
5278 | sizeof (Elf64_External_Dyn), | |
5279 | sizeof (Elf_External_Note), | |
5280 | 8, | |
5281 | 1, | |
45d6a902 | 5282 | 64, 3, |
70bcb145 JW |
5283 | ELFCLASS64, EV_CURRENT, |
5284 | bfd_elf64_write_out_phdrs, | |
5285 | bfd_elf64_write_shdrs_and_ehdr, | |
5286 | bfd_elf64_write_relocs, | |
73ff0d56 | 5287 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5288 | bfd_elf64_swap_symbol_out, |
5289 | bfd_elf64_slurp_reloc_table, | |
5290 | bfd_elf64_slurp_symbol_table, | |
5291 | bfd_elf64_swap_dyn_in, | |
5292 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5293 | bfd_elf64_swap_reloc_in, |
5294 | bfd_elf64_swap_reloc_out, | |
5295 | bfd_elf64_swap_reloca_in, | |
5296 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5297 | }; |
5298 | ||
252b5132 RH |
5299 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5300 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5301 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5302 | #define ELF_MACHINE_CODE EM_ALPHA |
5303 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5304 | |
5305 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5306 | elf64_alpha_bfd_link_hash_table_create | |
5307 | ||
5308 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5309 | elf64_alpha_bfd_reloc_type_lookup | |
5310 | #define elf_info_to_howto \ | |
5311 | elf64_alpha_info_to_howto | |
5312 | ||
5313 | #define bfd_elf64_mkobject \ | |
5314 | elf64_alpha_mkobject | |
5315 | #define elf_backend_object_p \ | |
5316 | elf64_alpha_object_p | |
5317 | ||
5318 | #define elf_backend_section_from_shdr \ | |
5319 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5320 | #define elf_backend_section_flags \ |
5321 | elf64_alpha_section_flags | |
252b5132 RH |
5322 | #define elf_backend_fake_sections \ |
5323 | elf64_alpha_fake_sections | |
5324 | ||
5325 | #define bfd_elf64_bfd_is_local_label_name \ | |
5326 | elf64_alpha_is_local_label_name | |
5327 | #define bfd_elf64_find_nearest_line \ | |
5328 | elf64_alpha_find_nearest_line | |
5329 | #define bfd_elf64_bfd_relax_section \ | |
5330 | elf64_alpha_relax_section | |
5331 | ||
5332 | #define elf_backend_add_symbol_hook \ | |
5333 | elf64_alpha_add_symbol_hook | |
5334 | #define elf_backend_check_relocs \ | |
5335 | elf64_alpha_check_relocs | |
5336 | #define elf_backend_create_dynamic_sections \ | |
5337 | elf64_alpha_create_dynamic_sections | |
5338 | #define elf_backend_adjust_dynamic_symbol \ | |
5339 | elf64_alpha_adjust_dynamic_symbol | |
5340 | #define elf_backend_always_size_sections \ | |
5341 | elf64_alpha_always_size_sections | |
5342 | #define elf_backend_size_dynamic_sections \ | |
5343 | elf64_alpha_size_dynamic_sections | |
5344 | #define elf_backend_relocate_section \ | |
5345 | elf64_alpha_relocate_section | |
5346 | #define elf_backend_finish_dynamic_symbol \ | |
5347 | elf64_alpha_finish_dynamic_symbol | |
5348 | #define elf_backend_finish_dynamic_sections \ | |
5349 | elf64_alpha_finish_dynamic_sections | |
5350 | #define bfd_elf64_bfd_final_link \ | |
5351 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5352 | #define elf_backend_reloc_type_class \ |
5353 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5354 | |
5355 | #define elf_backend_ecoff_debug_swap \ | |
5356 | &elf64_alpha_ecoff_debug_swap | |
5357 | ||
70bcb145 JW |
5358 | #define elf_backend_size_info \ |
5359 | alpha_elf_size_info | |
5360 | ||
2f89ff8d L |
5361 | #define elf_backend_special_sections \ |
5362 | elf64_alpha_special_sections | |
5363 | ||
38b1a46c | 5364 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5365 | #define elf_backend_want_got_plt 0 |
5366 | #define elf_backend_plt_readonly 0 | |
5367 | #define elf_backend_want_plt_sym 1 | |
5368 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5369 | |
5370 | #include "elf64-target.h" | |
2238051f RH |
5371 | \f |
5372 | /* FreeBSD support. */ | |
5373 | ||
5374 | #undef TARGET_LITTLE_SYM | |
5375 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5376 | #undef TARGET_LITTLE_NAME | |
5377 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5378 | ||
5379 | /* The kernel recognizes executables as valid only if they carry a | |
5380 | "FreeBSD" label in the ELF header. So we put this label on all | |
5381 | executables and (for simplicity) also all other object files. */ | |
5382 | ||
2238051f | 5383 | static void |
a7519a3c RH |
5384 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5385 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5386 | { |
5387 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5388 | ||
5389 | i_ehdrp = elf_elfheader (abfd); | |
5390 | ||
5391 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5392 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5393 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5394 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5395 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5396 | #endif | |
5397 | } | |
5398 | ||
5399 | #undef elf_backend_post_process_headers | |
5400 | #define elf_backend_post_process_headers \ | |
5401 | elf64_alpha_fbsd_post_process_headers | |
5402 | ||
571fe01f | 5403 | #undef elf64_bed |
2238051f RH |
5404 | #define elf64_bed elf64_alpha_fbsd_bed |
5405 | ||
5406 | #include "elf64-target.h" |