Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
66eb6687 AM |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
3 | 2006 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 | ||
66eb6687 AM |
276 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
277 | elf64_alpha_link_hash_newfunc, | |
278 | sizeof (struct alpha_elf_link_hash_entry))) | |
252b5132 | 279 | { |
e2d34d7d | 280 | free (ret); |
252b5132 RH |
281 | return NULL; |
282 | } | |
283 | ||
284 | return &ret->root.root; | |
285 | } | |
286 | \f | |
287 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
288 | ||
289 | struct alpha_elf_obj_tdata | |
290 | { | |
291 | struct elf_obj_tdata root; | |
292 | ||
293 | /* For every input file, these are the got entries for that object's | |
294 | local symbols. */ | |
295 | struct alpha_elf_got_entry ** local_got_entries; | |
296 | ||
297 | /* For every input file, this is the object that owns the got that | |
298 | this input file uses. */ | |
299 | bfd *gotobj; | |
300 | ||
301 | /* For every got, this is a linked list through the objects using this got */ | |
302 | bfd *in_got_link_next; | |
303 | ||
304 | /* For every got, this is a link to the next got subsegment. */ | |
305 | bfd *got_link_next; | |
306 | ||
307 | /* For every got, this is the section. */ | |
308 | asection *got; | |
309 | ||
3765b1be RH |
310 | /* For every got, this is it's total number of words. */ |
311 | int total_got_size; | |
252b5132 | 312 | |
3765b1be | 313 | /* For every got, this is the sum of the number of words required |
252b5132 | 314 | to hold all of the member object's local got. */ |
3765b1be | 315 | int local_got_size; |
252b5132 RH |
316 | }; |
317 | ||
318 | #define alpha_elf_tdata(abfd) \ | |
319 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
320 | ||
b34976b6 | 321 | static bfd_boolean |
a7519a3c | 322 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 323 | { |
dc810e39 AM |
324 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
325 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 326 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
327 | return FALSE; |
328 | return TRUE; | |
252b5132 RH |
329 | } |
330 | ||
b34976b6 | 331 | static bfd_boolean |
a7519a3c | 332 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 333 | { |
252b5132 RH |
334 | /* Set the right machine number for an Alpha ELF file. */ |
335 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
336 | } | |
337 | \f | |
a7519a3c RH |
338 | /* A relocation function which doesn't do anything. */ |
339 | ||
340 | static bfd_reloc_status_type | |
341 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
342 | asymbol *sym ATTRIBUTE_UNUSED, | |
343 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
344 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
345 | { | |
346 | if (output_bfd) | |
347 | reloc->address += sec->output_offset; | |
348 | return bfd_reloc_ok; | |
349 | } | |
350 | ||
351 | /* A relocation function used for an unsupported reloc. */ | |
352 | ||
353 | static bfd_reloc_status_type | |
354 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
355 | asymbol *sym ATTRIBUTE_UNUSED, | |
356 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
357 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
358 | { | |
359 | if (output_bfd) | |
360 | reloc->address += sec->output_offset; | |
361 | return bfd_reloc_notsupported; | |
362 | } | |
363 | ||
364 | /* Do the work of the GPDISP relocation. */ | |
365 | ||
366 | static bfd_reloc_status_type | |
367 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
368 | bfd_byte *p_lda) | |
369 | { | |
370 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
371 | bfd_vma addend; | |
372 | unsigned long i_ldah, i_lda; | |
373 | ||
374 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
375 | i_lda = bfd_get_32 (abfd, p_lda); | |
376 | ||
377 | /* Complain if the instructions are not correct. */ | |
378 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
379 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
380 | ret = bfd_reloc_dangerous; | |
381 | ||
382 | /* Extract the user-supplied offset, mirroring the sign extensions | |
383 | that the instructions perform. */ | |
384 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
385 | addend = (addend ^ 0x80008000) - 0x80008000; | |
386 | ||
387 | gpdisp += addend; | |
388 | ||
389 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
390 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
391 | ret = bfd_reloc_overflow; | |
392 | ||
393 | /* compensate for the sign extension again. */ | |
394 | i_ldah = ((i_ldah & 0xffff0000) | |
395 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
396 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
397 | ||
398 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
399 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
400 | ||
401 | return ret; | |
402 | } | |
403 | ||
404 | /* The special function for the GPDISP reloc. */ | |
405 | ||
406 | static bfd_reloc_status_type | |
407 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
408 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
409 | asection *input_section, bfd *output_bfd, | |
410 | char **err_msg) | |
411 | { | |
412 | bfd_reloc_status_type ret; | |
413 | bfd_vma gp, relocation; | |
414 | bfd_vma high_address; | |
415 | bfd_byte *p_ldah, *p_lda; | |
416 | ||
417 | /* Don't do anything if we're not doing a final link. */ | |
418 | if (output_bfd) | |
419 | { | |
420 | reloc_entry->address += input_section->output_offset; | |
421 | return bfd_reloc_ok; | |
422 | } | |
423 | ||
424 | high_address = bfd_get_section_limit (abfd, input_section); | |
425 | if (reloc_entry->address > high_address | |
426 | || reloc_entry->address + reloc_entry->addend > high_address) | |
427 | return bfd_reloc_outofrange; | |
428 | ||
429 | /* The gp used in the portion of the output object to which this | |
430 | input object belongs is cached on the input bfd. */ | |
431 | gp = _bfd_get_gp_value (abfd); | |
432 | ||
433 | relocation = (input_section->output_section->vma | |
434 | + input_section->output_offset | |
435 | + reloc_entry->address); | |
436 | ||
437 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
438 | p_lda = p_ldah + reloc_entry->addend; | |
439 | ||
440 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
441 | ||
442 | /* Complain if the instructions are not correct. */ | |
443 | if (ret == bfd_reloc_dangerous) | |
444 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
445 | ||
446 | return ret; | |
447 | } | |
448 | ||
252b5132 RH |
449 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
450 | from smaller values. Start with zero, widen, *then* decrement. */ | |
451 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
452 | ||
dfe57ca0 RH |
453 | #define SKIP_HOWTO(N) \ |
454 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
455 | ||
252b5132 RH |
456 | static reloc_howto_type elf64_alpha_howto_table[] = |
457 | { | |
458 | HOWTO (R_ALPHA_NONE, /* type */ | |
459 | 0, /* rightshift */ | |
460 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 8, /* bitsize */ | |
b34976b6 | 462 | TRUE, /* pc_relative */ |
252b5132 RH |
463 | 0, /* bitpos */ |
464 | complain_overflow_dont, /* complain_on_overflow */ | |
465 | elf64_alpha_reloc_nil, /* special_function */ | |
466 | "NONE", /* name */ | |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
252b5132 RH |
468 | 0, /* src_mask */ |
469 | 0, /* dst_mask */ | |
b34976b6 | 470 | TRUE), /* pcrel_offset */ |
252b5132 RH |
471 | |
472 | /* A 32 bit reference to a symbol. */ | |
473 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
474 | 0, /* rightshift */ | |
475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 32, /* bitsize */ | |
b34976b6 | 477 | FALSE, /* pc_relative */ |
252b5132 RH |
478 | 0, /* bitpos */ |
479 | complain_overflow_bitfield, /* complain_on_overflow */ | |
480 | 0, /* special_function */ | |
481 | "REFLONG", /* name */ | |
b34976b6 | 482 | FALSE, /* partial_inplace */ |
252b5132 RH |
483 | 0xffffffff, /* src_mask */ |
484 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 485 | FALSE), /* pcrel_offset */ |
252b5132 RH |
486 | |
487 | /* A 64 bit reference to a symbol. */ | |
488 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
489 | 0, /* rightshift */ | |
490 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
491 | 64, /* bitsize */ | |
b34976b6 | 492 | FALSE, /* pc_relative */ |
252b5132 RH |
493 | 0, /* bitpos */ |
494 | complain_overflow_bitfield, /* complain_on_overflow */ | |
495 | 0, /* special_function */ | |
496 | "REFQUAD", /* name */ | |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
252b5132 RH |
498 | MINUS_ONE, /* src_mask */ |
499 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 500 | FALSE), /* pcrel_offset */ |
252b5132 RH |
501 | |
502 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
503 | that when the value is used the value of the gp register will be | |
504 | added in. */ | |
505 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
506 | 0, /* rightshift */ | |
507 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
508 | 32, /* bitsize */ | |
b34976b6 | 509 | FALSE, /* pc_relative */ |
252b5132 RH |
510 | 0, /* bitpos */ |
511 | complain_overflow_bitfield, /* complain_on_overflow */ | |
512 | 0, /* special_function */ | |
513 | "GPREL32", /* name */ | |
b34976b6 | 514 | FALSE, /* partial_inplace */ |
252b5132 RH |
515 | 0xffffffff, /* src_mask */ |
516 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 517 | FALSE), /* pcrel_offset */ |
252b5132 RH |
518 | |
519 | /* Used for an instruction that refers to memory off the GP register. */ | |
520 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
521 | 0, /* rightshift */ | |
dfe57ca0 | 522 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 523 | 16, /* bitsize */ |
b34976b6 | 524 | FALSE, /* pc_relative */ |
252b5132 RH |
525 | 0, /* bitpos */ |
526 | complain_overflow_signed, /* complain_on_overflow */ | |
527 | 0, /* special_function */ | |
528 | "ELF_LITERAL", /* name */ | |
b34976b6 | 529 | FALSE, /* partial_inplace */ |
252b5132 RH |
530 | 0xffff, /* src_mask */ |
531 | 0xffff, /* dst_mask */ | |
b34976b6 | 532 | FALSE), /* pcrel_offset */ |
252b5132 RH |
533 | |
534 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
535 | It identifies a use of the literal. The symbol index is special: | |
536 | 1 means the literal address is in the base register of a memory | |
537 | format instruction; 2 means the literal address is in the byte | |
538 | offset register of a byte-manipulation instruction; 3 means the | |
539 | literal address is in the target register of a jsr instruction. | |
540 | This does not actually do any relocation. */ | |
541 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
542 | 0, /* rightshift */ | |
dfe57ca0 | 543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 544 | 32, /* bitsize */ |
b34976b6 | 545 | FALSE, /* pc_relative */ |
252b5132 RH |
546 | 0, /* bitpos */ |
547 | complain_overflow_dont, /* complain_on_overflow */ | |
548 | elf64_alpha_reloc_nil, /* special_function */ | |
549 | "LITUSE", /* name */ | |
b34976b6 | 550 | FALSE, /* partial_inplace */ |
252b5132 RH |
551 | 0, /* src_mask */ |
552 | 0, /* dst_mask */ | |
b34976b6 | 553 | FALSE), /* pcrel_offset */ |
252b5132 RH |
554 | |
555 | /* Load the gp register. This is always used for a ldah instruction | |
556 | which loads the upper 16 bits of the gp register. The symbol | |
557 | index of the GPDISP instruction is an offset in bytes to the lda | |
558 | instruction that loads the lower 16 bits. The value to use for | |
559 | the relocation is the difference between the GP value and the | |
560 | current location; the load will always be done against a register | |
561 | holding the current address. | |
562 | ||
563 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
564 | any offset is present in the instructions, it is an offset from | |
565 | the register to the ldah instruction. This lets us avoid any | |
566 | stupid hackery like inventing a gp value to do partial relocation | |
567 | against. Also unlike ECOFF, we do the whole relocation off of | |
568 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
569 | space consuming bit, that, since all the information was present | |
570 | in the GPDISP_HI16 reloc. */ | |
571 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
572 | 16, /* rightshift */ | |
573 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
574 | 16, /* bitsize */ | |
b34976b6 | 575 | FALSE, /* pc_relative */ |
252b5132 RH |
576 | 0, /* bitpos */ |
577 | complain_overflow_dont, /* complain_on_overflow */ | |
578 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
579 | "GPDISP", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
252b5132 RH |
581 | 0xffff, /* src_mask */ |
582 | 0xffff, /* dst_mask */ | |
b34976b6 | 583 | TRUE), /* pcrel_offset */ |
252b5132 RH |
584 | |
585 | /* A 21 bit branch. */ | |
586 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
587 | 2, /* rightshift */ | |
588 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
589 | 21, /* bitsize */ | |
b34976b6 | 590 | TRUE, /* pc_relative */ |
252b5132 RH |
591 | 0, /* bitpos */ |
592 | complain_overflow_signed, /* complain_on_overflow */ | |
593 | 0, /* special_function */ | |
594 | "BRADDR", /* name */ | |
b34976b6 | 595 | FALSE, /* partial_inplace */ |
252b5132 RH |
596 | 0x1fffff, /* src_mask */ |
597 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 598 | TRUE), /* pcrel_offset */ |
252b5132 RH |
599 | |
600 | /* A hint for a jump to a register. */ | |
601 | HOWTO (R_ALPHA_HINT, /* type */ | |
602 | 2, /* rightshift */ | |
dfe57ca0 | 603 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 604 | 14, /* bitsize */ |
b34976b6 | 605 | TRUE, /* pc_relative */ |
252b5132 RH |
606 | 0, /* bitpos */ |
607 | complain_overflow_dont, /* complain_on_overflow */ | |
608 | 0, /* special_function */ | |
609 | "HINT", /* name */ | |
b34976b6 | 610 | FALSE, /* partial_inplace */ |
252b5132 RH |
611 | 0x3fff, /* src_mask */ |
612 | 0x3fff, /* dst_mask */ | |
b34976b6 | 613 | TRUE), /* pcrel_offset */ |
252b5132 RH |
614 | |
615 | /* 16 bit PC relative offset. */ | |
616 | HOWTO (R_ALPHA_SREL16, /* type */ | |
617 | 0, /* rightshift */ | |
618 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
619 | 16, /* bitsize */ | |
b34976b6 | 620 | TRUE, /* pc_relative */ |
252b5132 RH |
621 | 0, /* bitpos */ |
622 | complain_overflow_signed, /* complain_on_overflow */ | |
623 | 0, /* special_function */ | |
624 | "SREL16", /* name */ | |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
252b5132 RH |
626 | 0xffff, /* src_mask */ |
627 | 0xffff, /* dst_mask */ | |
b34976b6 | 628 | TRUE), /* pcrel_offset */ |
252b5132 RH |
629 | |
630 | /* 32 bit PC relative offset. */ | |
631 | HOWTO (R_ALPHA_SREL32, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 32, /* bitsize */ | |
b34976b6 | 635 | TRUE, /* pc_relative */ |
252b5132 RH |
636 | 0, /* bitpos */ |
637 | complain_overflow_signed, /* complain_on_overflow */ | |
638 | 0, /* special_function */ | |
639 | "SREL32", /* name */ | |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
252b5132 RH |
641 | 0xffffffff, /* src_mask */ |
642 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 643 | TRUE), /* pcrel_offset */ |
252b5132 RH |
644 | |
645 | /* A 64 bit PC relative offset. */ | |
646 | HOWTO (R_ALPHA_SREL64, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 64, /* bitsize */ | |
b34976b6 | 650 | TRUE, /* pc_relative */ |
252b5132 RH |
651 | 0, /* bitpos */ |
652 | complain_overflow_signed, /* complain_on_overflow */ | |
653 | 0, /* special_function */ | |
654 | "SREL64", /* name */ | |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
252b5132 RH |
656 | MINUS_ONE, /* src_mask */ |
657 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 658 | TRUE), /* pcrel_offset */ |
252b5132 | 659 | |
dfe57ca0 RH |
660 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
661 | SKIP_HOWTO (12), | |
662 | SKIP_HOWTO (13), | |
663 | SKIP_HOWTO (14), | |
664 | SKIP_HOWTO (15), | |
665 | SKIP_HOWTO (16), | |
252b5132 RH |
666 | |
667 | /* The high 16 bits of the displacement from GP to the target. */ | |
668 | HOWTO (R_ALPHA_GPRELHIGH, | |
669 | 0, /* rightshift */ | |
dfe57ca0 | 670 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 671 | 16, /* bitsize */ |
b34976b6 | 672 | FALSE, /* pc_relative */ |
252b5132 RH |
673 | 0, /* bitpos */ |
674 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 675 | 0, /* special_function */ |
252b5132 | 676 | "GPRELHIGH", /* name */ |
b34976b6 | 677 | FALSE, /* partial_inplace */ |
252b5132 RH |
678 | 0xffff, /* src_mask */ |
679 | 0xffff, /* dst_mask */ | |
b34976b6 | 680 | FALSE), /* pcrel_offset */ |
252b5132 RH |
681 | |
682 | /* The low 16 bits of the displacement from GP to the target. */ | |
683 | HOWTO (R_ALPHA_GPRELLOW, | |
684 | 0, /* rightshift */ | |
dfe57ca0 | 685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 686 | 16, /* bitsize */ |
b34976b6 | 687 | FALSE, /* pc_relative */ |
252b5132 RH |
688 | 0, /* bitpos */ |
689 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 690 | 0, /* special_function */ |
252b5132 | 691 | "GPRELLOW", /* name */ |
b34976b6 | 692 | FALSE, /* partial_inplace */ |
252b5132 RH |
693 | 0xffff, /* src_mask */ |
694 | 0xffff, /* dst_mask */ | |
b34976b6 | 695 | FALSE), /* pcrel_offset */ |
252b5132 RH |
696 | |
697 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 698 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 699 | 0, /* rightshift */ |
dfe57ca0 | 700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 701 | 16, /* bitsize */ |
b34976b6 | 702 | FALSE, /* pc_relative */ |
252b5132 RH |
703 | 0, /* bitpos */ |
704 | complain_overflow_signed, /* complain_on_overflow */ | |
705 | 0, /* special_function */ | |
dfe57ca0 | 706 | "GPREL16", /* name */ |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
252b5132 RH |
708 | 0xffff, /* src_mask */ |
709 | 0xffff, /* dst_mask */ | |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
252b5132 | 711 | |
dfe57ca0 RH |
712 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
713 | SKIP_HOWTO (20), | |
714 | SKIP_HOWTO (21), | |
715 | SKIP_HOWTO (22), | |
716 | SKIP_HOWTO (23), | |
252b5132 | 717 | |
fe8bc63d | 718 | /* Misc ELF relocations. */ |
252b5132 RH |
719 | |
720 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
721 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
722 | is present because every other ELF has one, but should not be used | |
723 | because .dynbss is an ugly thing. */ | |
724 | HOWTO (R_ALPHA_COPY, | |
725 | 0, | |
726 | 0, | |
727 | 0, | |
b34976b6 | 728 | FALSE, |
252b5132 RH |
729 | 0, |
730 | complain_overflow_dont, | |
731 | bfd_elf_generic_reloc, | |
732 | "COPY", | |
b34976b6 | 733 | FALSE, |
252b5132 RH |
734 | 0, |
735 | 0, | |
b34976b6 | 736 | TRUE), |
252b5132 RH |
737 | |
738 | /* A dynamic relocation for a .got entry. */ | |
739 | HOWTO (R_ALPHA_GLOB_DAT, | |
740 | 0, | |
741 | 0, | |
742 | 0, | |
b34976b6 | 743 | FALSE, |
252b5132 RH |
744 | 0, |
745 | complain_overflow_dont, | |
746 | bfd_elf_generic_reloc, | |
747 | "GLOB_DAT", | |
b34976b6 | 748 | FALSE, |
252b5132 RH |
749 | 0, |
750 | 0, | |
b34976b6 | 751 | TRUE), |
252b5132 RH |
752 | |
753 | /* A dynamic relocation for a .plt entry. */ | |
754 | HOWTO (R_ALPHA_JMP_SLOT, | |
755 | 0, | |
756 | 0, | |
757 | 0, | |
b34976b6 | 758 | FALSE, |
252b5132 RH |
759 | 0, |
760 | complain_overflow_dont, | |
761 | bfd_elf_generic_reloc, | |
762 | "JMP_SLOT", | |
b34976b6 | 763 | FALSE, |
252b5132 RH |
764 | 0, |
765 | 0, | |
b34976b6 | 766 | TRUE), |
252b5132 RH |
767 | |
768 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
769 | HOWTO (R_ALPHA_RELATIVE, | |
770 | 0, | |
771 | 0, | |
772 | 0, | |
b34976b6 | 773 | FALSE, |
252b5132 RH |
774 | 0, |
775 | complain_overflow_dont, | |
776 | bfd_elf_generic_reloc, | |
777 | "RELATIVE", | |
b34976b6 | 778 | FALSE, |
252b5132 RH |
779 | 0, |
780 | 0, | |
b34976b6 | 781 | TRUE), |
7793f4d0 RH |
782 | |
783 | /* A 21 bit branch that adjusts for gp loads. */ | |
784 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
785 | 2, /* rightshift */ | |
786 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
787 | 21, /* bitsize */ | |
b34976b6 | 788 | TRUE, /* pc_relative */ |
7793f4d0 RH |
789 | 0, /* bitpos */ |
790 | complain_overflow_signed, /* complain_on_overflow */ | |
791 | 0, /* special_function */ | |
792 | "BRSGP", /* name */ | |
b34976b6 | 793 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
794 | 0x1fffff, /* src_mask */ |
795 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 796 | TRUE), /* pcrel_offset */ |
3765b1be RH |
797 | |
798 | /* Creates a tls_index for the symbol in the got. */ | |
799 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
800 | 0, /* rightshift */ | |
801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
802 | 16, /* bitsize */ | |
b34976b6 | 803 | FALSE, /* pc_relative */ |
3765b1be RH |
804 | 0, /* bitpos */ |
805 | complain_overflow_signed, /* complain_on_overflow */ | |
806 | 0, /* special_function */ | |
807 | "TLSGD", /* name */ | |
b34976b6 | 808 | FALSE, /* partial_inplace */ |
3765b1be RH |
809 | 0xffff, /* src_mask */ |
810 | 0xffff, /* dst_mask */ | |
b34976b6 | 811 | FALSE), /* pcrel_offset */ |
3765b1be RH |
812 | |
813 | /* Creates a tls_index for the (current) module in the got. */ | |
814 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
815 | 0, /* rightshift */ | |
816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
817 | 16, /* bitsize */ | |
b34976b6 | 818 | FALSE, /* pc_relative */ |
3765b1be RH |
819 | 0, /* bitpos */ |
820 | complain_overflow_signed, /* complain_on_overflow */ | |
821 | 0, /* special_function */ | |
822 | "TLSLDM", /* name */ | |
b34976b6 | 823 | FALSE, /* partial_inplace */ |
3765b1be RH |
824 | 0xffff, /* src_mask */ |
825 | 0xffff, /* dst_mask */ | |
b34976b6 | 826 | FALSE), /* pcrel_offset */ |
3765b1be RH |
827 | |
828 | /* A dynamic relocation for a DTP module entry. */ | |
829 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 64, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
3765b1be RH |
834 | 0, /* bitpos */ |
835 | complain_overflow_bitfield, /* complain_on_overflow */ | |
836 | 0, /* special_function */ | |
837 | "DTPMOD64", /* name */ | |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
3765b1be RH |
839 | MINUS_ONE, /* src_mask */ |
840 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
3765b1be RH |
842 | |
843 | /* Creates a 64-bit offset in the got for the displacement | |
844 | from DTP to the target. */ | |
845 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
846 | 0, /* rightshift */ | |
847 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
848 | 16, /* bitsize */ | |
b34976b6 | 849 | FALSE, /* pc_relative */ |
3765b1be RH |
850 | 0, /* bitpos */ |
851 | complain_overflow_signed, /* complain_on_overflow */ | |
852 | 0, /* special_function */ | |
853 | "GOTDTPREL", /* name */ | |
b34976b6 | 854 | FALSE, /* partial_inplace */ |
3765b1be RH |
855 | 0xffff, /* src_mask */ |
856 | 0xffff, /* dst_mask */ | |
b34976b6 | 857 | FALSE), /* pcrel_offset */ |
3765b1be RH |
858 | |
859 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
860 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
861 | 0, /* rightshift */ | |
862 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
863 | 64, /* bitsize */ | |
b34976b6 | 864 | FALSE, /* pc_relative */ |
3765b1be RH |
865 | 0, /* bitpos */ |
866 | complain_overflow_bitfield, /* complain_on_overflow */ | |
867 | 0, /* special_function */ | |
868 | "DTPREL64", /* name */ | |
b34976b6 | 869 | FALSE, /* partial_inplace */ |
3765b1be RH |
870 | MINUS_ONE, /* src_mask */ |
871 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 872 | FALSE), /* pcrel_offset */ |
3765b1be RH |
873 | |
874 | /* The high 16 bits of the displacement from DTP to the target. */ | |
875 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
876 | 0, /* rightshift */ | |
877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
3765b1be RH |
880 | 0, /* bitpos */ |
881 | complain_overflow_signed, /* complain_on_overflow */ | |
882 | 0, /* special_function */ | |
883 | "DTPRELHI", /* name */ | |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
3765b1be RH |
885 | 0xffff, /* src_mask */ |
886 | 0xffff, /* dst_mask */ | |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
3765b1be RH |
888 | |
889 | /* The low 16 bits of the displacement from DTP to the target. */ | |
890 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 16, /* bitsize */ | |
b34976b6 | 894 | FALSE, /* pc_relative */ |
3765b1be RH |
895 | 0, /* bitpos */ |
896 | complain_overflow_dont, /* complain_on_overflow */ | |
897 | 0, /* special_function */ | |
898 | "DTPRELLO", /* name */ | |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
3765b1be RH |
900 | 0xffff, /* src_mask */ |
901 | 0xffff, /* dst_mask */ | |
b34976b6 | 902 | FALSE), /* pcrel_offset */ |
3765b1be RH |
903 | |
904 | /* A 16-bit displacement from DTP to the target. */ | |
905 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
908 | 16, /* bitsize */ | |
b34976b6 | 909 | FALSE, /* pc_relative */ |
3765b1be RH |
910 | 0, /* bitpos */ |
911 | complain_overflow_signed, /* complain_on_overflow */ | |
912 | 0, /* special_function */ | |
913 | "DTPREL16", /* name */ | |
b34976b6 | 914 | FALSE, /* partial_inplace */ |
3765b1be RH |
915 | 0xffff, /* src_mask */ |
916 | 0xffff, /* dst_mask */ | |
b34976b6 | 917 | FALSE), /* pcrel_offset */ |
3765b1be RH |
918 | |
919 | /* Creates a 64-bit offset in the got for the displacement | |
920 | from TP to the target. */ | |
921 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
922 | 0, /* rightshift */ | |
923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 16, /* bitsize */ | |
b34976b6 | 925 | FALSE, /* pc_relative */ |
3765b1be RH |
926 | 0, /* bitpos */ |
927 | complain_overflow_signed, /* complain_on_overflow */ | |
928 | 0, /* special_function */ | |
929 | "GOTTPREL", /* name */ | |
b34976b6 | 930 | FALSE, /* partial_inplace */ |
3765b1be RH |
931 | 0xffff, /* src_mask */ |
932 | 0xffff, /* dst_mask */ | |
b34976b6 | 933 | FALSE), /* pcrel_offset */ |
3765b1be RH |
934 | |
935 | /* A dynamic relocation for a displacement from TP to the target. */ | |
936 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
937 | 0, /* rightshift */ | |
938 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 64, /* bitsize */ | |
b34976b6 | 940 | FALSE, /* pc_relative */ |
3765b1be RH |
941 | 0, /* bitpos */ |
942 | complain_overflow_bitfield, /* complain_on_overflow */ | |
943 | 0, /* special_function */ | |
944 | "TPREL64", /* name */ | |
b34976b6 | 945 | FALSE, /* partial_inplace */ |
3765b1be RH |
946 | MINUS_ONE, /* src_mask */ |
947 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 948 | FALSE), /* pcrel_offset */ |
3765b1be RH |
949 | |
950 | /* The high 16 bits of the displacement from TP to the target. */ | |
951 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
952 | 0, /* rightshift */ | |
953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 16, /* bitsize */ | |
b34976b6 | 955 | FALSE, /* pc_relative */ |
3765b1be RH |
956 | 0, /* bitpos */ |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
958 | 0, /* special_function */ | |
959 | "TPRELHI", /* name */ | |
b34976b6 | 960 | FALSE, /* partial_inplace */ |
3765b1be RH |
961 | 0xffff, /* src_mask */ |
962 | 0xffff, /* dst_mask */ | |
b34976b6 | 963 | FALSE), /* pcrel_offset */ |
3765b1be RH |
964 | |
965 | /* The low 16 bits of the displacement from TP to the target. */ | |
966 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
967 | 0, /* rightshift */ | |
968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 16, /* bitsize */ | |
b34976b6 | 970 | FALSE, /* pc_relative */ |
3765b1be RH |
971 | 0, /* bitpos */ |
972 | complain_overflow_dont, /* complain_on_overflow */ | |
973 | 0, /* special_function */ | |
974 | "TPRELLO", /* name */ | |
b34976b6 | 975 | FALSE, /* partial_inplace */ |
3765b1be RH |
976 | 0xffff, /* src_mask */ |
977 | 0xffff, /* dst_mask */ | |
b34976b6 | 978 | FALSE), /* pcrel_offset */ |
3765b1be RH |
979 | |
980 | /* A 16-bit displacement from TP to the target. */ | |
981 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
982 | 0, /* rightshift */ | |
983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 16, /* bitsize */ | |
b34976b6 | 985 | FALSE, /* pc_relative */ |
3765b1be RH |
986 | 0, /* bitpos */ |
987 | complain_overflow_signed, /* complain_on_overflow */ | |
988 | 0, /* special_function */ | |
989 | "TPREL16", /* name */ | |
b34976b6 | 990 | FALSE, /* partial_inplace */ |
3765b1be RH |
991 | 0xffff, /* src_mask */ |
992 | 0xffff, /* dst_mask */ | |
b34976b6 | 993 | FALSE), /* pcrel_offset */ |
252b5132 RH |
994 | }; |
995 | ||
252b5132 RH |
996 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
997 | ||
998 | struct elf_reloc_map | |
999 | { | |
1000 | bfd_reloc_code_real_type bfd_reloc_val; | |
1001 | int elf_reloc_val; | |
1002 | }; | |
1003 | ||
1004 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1005 | { | |
dfe57ca0 RH |
1006 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1007 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1008 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1009 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1010 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1011 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1012 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1013 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1014 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1015 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1016 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1017 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1018 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1019 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1020 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1021 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1022 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1023 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1024 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1025 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1026 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1027 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1028 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1029 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1030 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1031 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1032 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1033 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1034 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1035 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1036 | }; |
1037 | ||
1038 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1039 | ||
1040 | static reloc_howto_type * | |
a7519a3c RH |
1041 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1042 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1043 | { |
1044 | const struct elf_reloc_map *i, *e; | |
1045 | i = e = elf64_alpha_reloc_map; | |
1046 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1047 | for (; i != e; ++i) | |
1048 | { | |
1049 | if (i->bfd_reloc_val == code) | |
1050 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1051 | } | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1056 | ||
1057 | static void | |
a7519a3c RH |
1058 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1059 | Elf_Internal_Rela *dst) | |
252b5132 | 1060 | { |
a7519a3c | 1061 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1062 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1063 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1064 | } | |
3765b1be RH |
1065 | |
1066 | /* These two relocations create a two-word entry in the got. */ | |
1067 | #define alpha_got_entry_size(r_type) \ | |
1068 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1069 | |
1070 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1071 | #define alpha_get_dtprel_base(info) \ |
1072 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1073 | |
1074 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1075 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1076 | #define alpha_get_tprel_base(info) \ |
1077 | (elf_hash_table (info)->tls_sec->vma \ | |
1078 | - align_power ((bfd_vma) 16, \ | |
1079 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1080 | \f |
a7519a3c RH |
1081 | /* Handle an Alpha specific section when reading an object file. This |
1082 | is called when bfd_section_from_shdr finds a section with an unknown | |
1083 | type. | |
1084 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1085 | how to. */ | |
252b5132 | 1086 | |
a7519a3c RH |
1087 | static bfd_boolean |
1088 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1089 | Elf_Internal_Shdr *hdr, | |
1090 | const char *name, | |
1091 | int shindex) | |
252b5132 | 1092 | { |
a7519a3c RH |
1093 | asection *newsect; |
1094 | ||
1095 | /* There ought to be a place to keep ELF backend specific flags, but | |
1096 | at the moment there isn't one. We just keep track of the | |
1097 | sections by their name, instead. Fortunately, the ABI gives | |
1098 | suggested names for all the MIPS specific sections, so we will | |
1099 | probably get away with this. */ | |
1100 | switch (hdr->sh_type) | |
1101 | { | |
1102 | case SHT_ALPHA_DEBUG: | |
1103 | if (strcmp (name, ".mdebug") != 0) | |
1104 | return FALSE; | |
1105 | break; | |
1106 | default: | |
1107 | return FALSE; | |
1108 | } | |
252b5132 | 1109 | |
a7519a3c RH |
1110 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1111 | return FALSE; | |
1112 | newsect = hdr->bfd_section; | |
252b5132 | 1113 | |
a7519a3c | 1114 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1115 | { |
a7519a3c RH |
1116 | if (! bfd_set_section_flags (abfd, newsect, |
1117 | (bfd_get_section_flags (abfd, newsect) | |
1118 | | SEC_DEBUGGING))) | |
1119 | return FALSE; | |
252b5132 | 1120 | } |
a7519a3c RH |
1121 | |
1122 | return TRUE; | |
252b5132 RH |
1123 | } |
1124 | ||
a7519a3c RH |
1125 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1126 | ||
b34976b6 | 1127 | static bfd_boolean |
a7519a3c | 1128 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1129 | { |
a7519a3c RH |
1130 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1131 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1132 | |
a7519a3c RH |
1133 | return TRUE; |
1134 | } | |
252b5132 | 1135 | |
a7519a3c RH |
1136 | /* Set the correct type for an Alpha ELF section. We do this by the |
1137 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1138 | |
a7519a3c RH |
1139 | static bfd_boolean |
1140 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1141 | { | |
1142 | register const char *name; | |
1143 | ||
1144 | name = bfd_get_section_name (abfd, sec); | |
1145 | ||
1146 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1147 | { |
a7519a3c RH |
1148 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1149 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1150 | entsize of 0. FIXME: Does this matter? */ | |
1151 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1152 | hdr->sh_entsize = 0; | |
1153 | else | |
1154 | hdr->sh_entsize = 1; | |
252b5132 | 1155 | } |
a7519a3c RH |
1156 | else if ((sec->flags & SEC_SMALL_DATA) |
1157 | || strcmp (name, ".sdata") == 0 | |
1158 | || strcmp (name, ".sbss") == 0 | |
1159 | || strcmp (name, ".lit4") == 0 | |
1160 | || strcmp (name, ".lit8") == 0) | |
1161 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1162 | |
a7519a3c RH |
1163 | return TRUE; |
1164 | } | |
252b5132 | 1165 | |
a7519a3c RH |
1166 | /* Hook called by the linker routine which adds symbols from an object |
1167 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1168 | ||
1169 | static bfd_boolean | |
1170 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1171 | Elf_Internal_Sym *sym, | |
1172 | const char **namep ATTRIBUTE_UNUSED, | |
1173 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1174 | asection **secp, bfd_vma *valp) | |
1175 | { | |
1176 | if (sym->st_shndx == SHN_COMMON | |
1177 | && !info->relocatable | |
1178 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1179 | { |
a7519a3c RH |
1180 | /* Common symbols less than or equal to -G nn bytes are |
1181 | automatically put into .sbss. */ | |
ffcb7aff | 1182 | |
a7519a3c | 1183 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1184 | |
a7519a3c | 1185 | if (scomm == NULL) |
252b5132 | 1186 | { |
a7519a3c RH |
1187 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1188 | (SEC_ALLOC | |
1189 | | SEC_IS_COMMON | |
1190 | | SEC_LINKER_CREATED)); | |
1191 | if (scomm == NULL) | |
1192 | return FALSE; | |
1193 | } | |
ffcb7aff | 1194 | |
a7519a3c RH |
1195 | *secp = scomm; |
1196 | *valp = sym->st_size; | |
1197 | } | |
ffcb7aff | 1198 | |
a7519a3c RH |
1199 | return TRUE; |
1200 | } | |
252b5132 | 1201 | |
a7519a3c | 1202 | /* Create the .got section. */ |
252b5132 | 1203 | |
a7519a3c RH |
1204 | static bfd_boolean |
1205 | elf64_alpha_create_got_section (bfd *abfd, | |
1206 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1207 | { | |
85d162e6 | 1208 | flagword flags; |
a7519a3c | 1209 | asection *s; |
252b5132 | 1210 | |
85d162e6 AM |
1211 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1212 | | SEC_LINKER_CREATED); | |
1213 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
a7519a3c RH |
1214 | if (s == NULL |
1215 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1216 | return FALSE; | |
252b5132 | 1217 | |
a7519a3c | 1218 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1219 | |
85d162e6 AM |
1220 | /* Make sure the object's gotobj is set to itself so that we default |
1221 | to every object with its own .got. We'll merge .gots later once | |
1222 | we've collected each object's info. */ | |
1223 | alpha_elf_tdata (abfd)->gotobj = abfd; | |
1224 | ||
a7519a3c RH |
1225 | return TRUE; |
1226 | } | |
252b5132 | 1227 | |
a7519a3c | 1228 | /* Create all the dynamic sections. */ |
252b5132 | 1229 | |
a7519a3c RH |
1230 | static bfd_boolean |
1231 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1232 | { | |
1233 | asection *s; | |
85d162e6 | 1234 | flagword flags; |
a7519a3c | 1235 | struct elf_link_hash_entry *h; |
252b5132 | 1236 | |
a7519a3c | 1237 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1238 | |
85d162e6 AM |
1239 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1240 | | SEC_LINKER_CREATED | |
1241 | | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); | |
1242 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); | |
6ec7057a | 1243 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) |
a7519a3c | 1244 | return FALSE; |
252b5132 | 1245 | |
a7519a3c RH |
1246 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1247 | .plt section. */ | |
7325306f RS |
1248 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
1249 | "_PROCEDURE_LINKAGE_TABLE_"); | |
1250 | elf_hash_table (info)->hplt = h; | |
1251 | if (h == NULL) | |
a7519a3c | 1252 | return FALSE; |
d6ad34f6 | 1253 | |
85d162e6 AM |
1254 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1255 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1256 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); | |
6ec7057a | 1257 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
a7519a3c | 1258 | return FALSE; |
252b5132 | 1259 | |
6ec7057a RH |
1260 | if (elf64_alpha_use_secureplt) |
1261 | { | |
85d162e6 AM |
1262 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
1263 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6ec7057a RH |
1264 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
1265 | return FALSE; | |
1266 | } | |
1267 | ||
a7519a3c RH |
1268 | /* We may or may not have created a .got section for this object, but |
1269 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1270 | |
85d162e6 AM |
1271 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
1272 | { | |
1273 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1274 | return FALSE; | |
1275 | } | |
1cd6895c | 1276 | |
85d162e6 AM |
1277 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1278 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1279 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); | |
a7519a3c RH |
1280 | if (s == NULL |
1281 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1282 | return FALSE; | |
252b5132 | 1283 | |
a7519a3c RH |
1284 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1285 | dynobj's .got section. We don't do this in the linker script | |
1286 | because we don't want to define the symbol if we are not creating | |
1287 | a global offset table. */ | |
d98685ac AM |
1288 | h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, |
1289 | "_GLOBAL_OFFSET_TABLE_"); | |
a7519a3c | 1290 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
1291 | if (h == NULL) |
1292 | return FALSE; | |
252b5132 | 1293 | |
a7519a3c | 1294 | return TRUE; |
252b5132 | 1295 | } |
a7519a3c RH |
1296 | \f |
1297 | /* Read ECOFF debugging information from a .mdebug section into a | |
1298 | ecoff_debug_info structure. */ | |
252b5132 | 1299 | |
a7519a3c RH |
1300 | static bfd_boolean |
1301 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1302 | struct ecoff_debug_info *debug) | |
252b5132 | 1303 | { |
a7519a3c RH |
1304 | HDRR *symhdr; |
1305 | const struct ecoff_debug_swap *swap; | |
1306 | char *ext_hdr = NULL; | |
252b5132 | 1307 | |
a7519a3c RH |
1308 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1309 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1310 | |
a7519a3c RH |
1311 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1312 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1313 | goto error_return; | |
252b5132 | 1314 | |
a7519a3c RH |
1315 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1316 | swap->external_hdr_size)) | |
1317 | goto error_return; | |
252b5132 | 1318 | |
a7519a3c RH |
1319 | symhdr = &debug->symbolic_header; |
1320 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1321 | |
a7519a3c RH |
1322 | /* The symbolic header contains absolute file offsets and sizes to |
1323 | read. */ | |
1324 | #define READ(ptr, offset, count, size, type) \ | |
1325 | if (symhdr->count == 0) \ | |
1326 | debug->ptr = NULL; \ | |
1327 | else \ | |
1328 | { \ | |
1329 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1330 | debug->ptr = (type) bfd_malloc (amt); \ | |
1331 | if (debug->ptr == NULL) \ | |
1332 | goto error_return; \ | |
1333 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1334 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1335 | goto error_return; \ | |
1336 | } | |
fe8bc63d | 1337 | |
a7519a3c RH |
1338 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1339 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1340 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1341 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1342 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1343 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1344 | union aux_ext *); | |
1345 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1346 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1347 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1348 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1349 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1350 | #undef READ | |
252b5132 | 1351 | |
a7519a3c | 1352 | debug->fdr = NULL; |
252b5132 | 1353 | |
a7519a3c | 1354 | return TRUE; |
252b5132 | 1355 | |
a7519a3c RH |
1356 | error_return: |
1357 | if (ext_hdr != NULL) | |
1358 | free (ext_hdr); | |
1359 | if (debug->line != NULL) | |
1360 | free (debug->line); | |
1361 | if (debug->external_dnr != NULL) | |
1362 | free (debug->external_dnr); | |
1363 | if (debug->external_pdr != NULL) | |
1364 | free (debug->external_pdr); | |
1365 | if (debug->external_sym != NULL) | |
1366 | free (debug->external_sym); | |
1367 | if (debug->external_opt != NULL) | |
1368 | free (debug->external_opt); | |
1369 | if (debug->external_aux != NULL) | |
1370 | free (debug->external_aux); | |
1371 | if (debug->ss != NULL) | |
1372 | free (debug->ss); | |
1373 | if (debug->ssext != NULL) | |
1374 | free (debug->ssext); | |
1375 | if (debug->external_fdr != NULL) | |
1376 | free (debug->external_fdr); | |
1377 | if (debug->external_rfd != NULL) | |
1378 | free (debug->external_rfd); | |
1379 | if (debug->external_ext != NULL) | |
1380 | free (debug->external_ext); | |
1381 | return FALSE; | |
252b5132 RH |
1382 | } |
1383 | ||
a7519a3c RH |
1384 | /* Alpha ELF local labels start with '$'. */ |
1385 | ||
b34976b6 | 1386 | static bfd_boolean |
a7519a3c | 1387 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1388 | { |
a7519a3c RH |
1389 | return name[0] == '$'; |
1390 | } | |
9e756d64 | 1391 | |
a7519a3c RH |
1392 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1393 | routine in order to handle the ECOFF debugging information. We | |
1394 | still call this mips_elf_find_line because of the slot | |
1395 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1396 | |
a7519a3c RH |
1397 | struct mips_elf_find_line |
1398 | { | |
1399 | struct ecoff_debug_info d; | |
1400 | struct ecoff_find_line i; | |
1401 | }; | |
d6ad34f6 | 1402 | |
a7519a3c RH |
1403 | static bfd_boolean |
1404 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1405 | bfd_vma offset, const char **filename_ptr, | |
1406 | const char **functionname_ptr, | |
1407 | unsigned int *line_ptr) | |
1408 | { | |
1409 | asection *msec; | |
252b5132 | 1410 | |
a7519a3c RH |
1411 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1412 | filename_ptr, functionname_ptr, | |
1413 | line_ptr, 0, | |
1414 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1415 | return TRUE; |
9e756d64 | 1416 | |
a7519a3c RH |
1417 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1418 | if (msec != NULL) | |
1bbc9cec | 1419 | { |
a7519a3c RH |
1420 | flagword origflags; |
1421 | struct mips_elf_find_line *fi; | |
1422 | const struct ecoff_debug_swap * const swap = | |
1423 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1424 | |
a7519a3c RH |
1425 | /* If we are called during a link, alpha_elf_final_link may have |
1426 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1427 | if appropriate (which it normally will be). */ | |
1428 | origflags = msec->flags; | |
1429 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1430 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1431 | |
a7519a3c RH |
1432 | fi = elf_tdata (abfd)->find_line_info; |
1433 | if (fi == NULL) | |
1434 | { | |
1435 | bfd_size_type external_fdr_size; | |
1436 | char *fraw_src; | |
1437 | char *fraw_end; | |
1438 | struct fdr *fdr_ptr; | |
1439 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1440 | |
a7519a3c RH |
1441 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1442 | if (fi == NULL) | |
1443 | { | |
1444 | msec->flags = origflags; | |
1445 | return FALSE; | |
1446 | } | |
9e756d64 | 1447 | |
a7519a3c RH |
1448 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1449 | { | |
1450 | msec->flags = origflags; | |
1451 | return FALSE; | |
1452 | } | |
9e756d64 | 1453 | |
a7519a3c RH |
1454 | /* Swap in the FDR information. */ |
1455 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1456 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1457 | if (fi->d.fdr == NULL) | |
1458 | { | |
1459 | msec->flags = origflags; | |
1460 | return FALSE; | |
1461 | } | |
1462 | external_fdr_size = swap->external_fdr_size; | |
1463 | fdr_ptr = fi->d.fdr; | |
1464 | fraw_src = (char *) fi->d.external_fdr; | |
1465 | fraw_end = (fraw_src | |
1466 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1467 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1468 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1469 | |
a7519a3c | 1470 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1471 | |
a7519a3c RH |
1472 | /* Note that we don't bother to ever free this information. |
1473 | find_nearest_line is either called all the time, as in | |
1474 | objdump -l, so the information should be saved, or it is | |
1475 | rarely called, as in ld error messages, so the memory | |
1476 | wasted is unimportant. Still, it would probably be a | |
1477 | good idea for free_cached_info to throw it away. */ | |
1478 | } | |
9e756d64 | 1479 | |
a7519a3c RH |
1480 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1481 | &fi->i, filename_ptr, functionname_ptr, | |
1482 | line_ptr)) | |
1483 | { | |
1484 | msec->flags = origflags; | |
1485 | return TRUE; | |
1486 | } | |
9e756d64 | 1487 | |
a7519a3c | 1488 | msec->flags = origflags; |
9e756d64 | 1489 | } |
9e756d64 | 1490 | |
a7519a3c | 1491 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1492 | |
a7519a3c RH |
1493 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1494 | filename_ptr, functionname_ptr, | |
1495 | line_ptr); | |
9e756d64 | 1496 | } |
a7519a3c RH |
1497 | \f |
1498 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1499 | |
a7519a3c | 1500 | struct extsym_info |
9e756d64 | 1501 | { |
a7519a3c RH |
1502 | bfd *abfd; |
1503 | struct bfd_link_info *info; | |
1504 | struct ecoff_debug_info *debug; | |
1505 | const struct ecoff_debug_swap *swap; | |
1506 | bfd_boolean failed; | |
1507 | }; | |
9e756d64 | 1508 | |
a7519a3c RH |
1509 | static bfd_boolean |
1510 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1511 | { | |
1512 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1513 | bfd_boolean strip; | |
1514 | asection *sec, *output_section; | |
9e756d64 | 1515 | |
a7519a3c RH |
1516 | if (h->root.root.type == bfd_link_hash_warning) |
1517 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1518 | |
a7519a3c RH |
1519 | if (h->root.indx == -2) |
1520 | strip = FALSE; | |
1521 | else if ((h->root.def_dynamic | |
1522 | || h->root.ref_dynamic | |
1523 | || h->root.root.type == bfd_link_hash_new) | |
1524 | && !h->root.def_regular | |
1525 | && !h->root.ref_regular) | |
1526 | strip = TRUE; | |
1527 | else if (einfo->info->strip == strip_all | |
1528 | || (einfo->info->strip == strip_some | |
1529 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1530 | h->root.root.root.string, | |
1531 | FALSE, FALSE) == NULL)) | |
1532 | strip = TRUE; | |
1533 | else | |
1534 | strip = FALSE; | |
9e756d64 | 1535 | |
a7519a3c | 1536 | if (strip) |
b34976b6 | 1537 | return TRUE; |
9e756d64 | 1538 | |
a7519a3c | 1539 | if (h->esym.ifd == -2) |
9e756d64 | 1540 | { |
a7519a3c RH |
1541 | h->esym.jmptbl = 0; |
1542 | h->esym.cobol_main = 0; | |
1543 | h->esym.weakext = 0; | |
1544 | h->esym.reserved = 0; | |
1545 | h->esym.ifd = ifdNil; | |
1546 | h->esym.asym.value = 0; | |
1547 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1548 | |
a7519a3c RH |
1549 | if (h->root.root.type != bfd_link_hash_defined |
1550 | && h->root.root.type != bfd_link_hash_defweak) | |
1551 | h->esym.asym.sc = scAbs; | |
1552 | else | |
1553 | { | |
1554 | const char *name; | |
9e756d64 | 1555 | |
a7519a3c RH |
1556 | sec = h->root.root.u.def.section; |
1557 | output_section = sec->output_section; | |
9e756d64 | 1558 | |
a7519a3c RH |
1559 | /* When making a shared library and symbol h is the one from |
1560 | the another shared library, OUTPUT_SECTION may be null. */ | |
1561 | if (output_section == NULL) | |
1562 | h->esym.asym.sc = scUndefined; | |
1563 | else | |
1564 | { | |
1565 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1566 | |
a7519a3c RH |
1567 | if (strcmp (name, ".text") == 0) |
1568 | h->esym.asym.sc = scText; | |
1569 | else if (strcmp (name, ".data") == 0) | |
1570 | h->esym.asym.sc = scData; | |
1571 | else if (strcmp (name, ".sdata") == 0) | |
1572 | h->esym.asym.sc = scSData; | |
1573 | else if (strcmp (name, ".rodata") == 0 | |
1574 | || strcmp (name, ".rdata") == 0) | |
1575 | h->esym.asym.sc = scRData; | |
1576 | else if (strcmp (name, ".bss") == 0) | |
1577 | h->esym.asym.sc = scBss; | |
1578 | else if (strcmp (name, ".sbss") == 0) | |
1579 | h->esym.asym.sc = scSBss; | |
1580 | else if (strcmp (name, ".init") == 0) | |
1581 | h->esym.asym.sc = scInit; | |
1582 | else if (strcmp (name, ".fini") == 0) | |
1583 | h->esym.asym.sc = scFini; | |
1584 | else | |
1585 | h->esym.asym.sc = scAbs; | |
1586 | } | |
1587 | } | |
9e756d64 | 1588 | |
a7519a3c RH |
1589 | h->esym.asym.reserved = 0; |
1590 | h->esym.asym.index = indexNil; | |
1591 | } | |
9e756d64 | 1592 | |
a7519a3c RH |
1593 | if (h->root.root.type == bfd_link_hash_common) |
1594 | h->esym.asym.value = h->root.root.u.c.size; | |
1595 | else if (h->root.root.type == bfd_link_hash_defined | |
1596 | || h->root.root.type == bfd_link_hash_defweak) | |
1597 | { | |
1598 | if (h->esym.asym.sc == scCommon) | |
1599 | h->esym.asym.sc = scBss; | |
1600 | else if (h->esym.asym.sc == scSCommon) | |
1601 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1602 | |
a7519a3c RH |
1603 | sec = h->root.root.u.def.section; |
1604 | output_section = sec->output_section; | |
1605 | if (output_section != NULL) | |
1606 | h->esym.asym.value = (h->root.root.u.def.value | |
1607 | + sec->output_offset | |
1608 | + output_section->vma); | |
1609 | else | |
1610 | h->esym.asym.value = 0; | |
1611 | } | |
9e756d64 | 1612 | |
a7519a3c RH |
1613 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1614 | h->root.root.root.string, | |
1615 | &h->esym)) | |
1616 | { | |
1617 | einfo->failed = TRUE; | |
1618 | return FALSE; | |
9e756d64 RH |
1619 | } |
1620 | ||
a7519a3c RH |
1621 | return TRUE; |
1622 | } | |
1623 | \f | |
1624 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1625 | |
a7519a3c RH |
1626 | static struct alpha_elf_got_entry * |
1627 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1628 | unsigned long r_type, unsigned long r_symndx, | |
1629 | bfd_vma r_addend) | |
1630 | { | |
1631 | struct alpha_elf_got_entry *gotent; | |
1632 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1633 | |
a7519a3c RH |
1634 | if (h) |
1635 | slot = &h->got_entries; | |
1636 | else | |
1637 | { | |
1638 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1639 | |
a7519a3c | 1640 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1641 | |
a7519a3c RH |
1642 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1643 | if (!local_got_entries) | |
1644 | { | |
1645 | bfd_size_type size; | |
1646 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1647 | |
a7519a3c RH |
1648 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1649 | size = symtab_hdr->sh_info; | |
1650 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1651 | |
a7519a3c RH |
1652 | local_got_entries |
1653 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1654 | if (!local_got_entries) | |
1655 | return NULL; | |
1656 | ||
1657 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1658 | } | |
1659 | ||
1660 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1661 | } |
1662 | ||
a7519a3c RH |
1663 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1664 | if (gotent->gotobj == abfd | |
1665 | && gotent->reloc_type == r_type | |
1666 | && gotent->addend == r_addend) | |
1667 | break; | |
1668 | ||
1669 | if (!gotent) | |
9e756d64 | 1670 | { |
a7519a3c RH |
1671 | int entry_size; |
1672 | bfd_size_type amt; | |
9e756d64 | 1673 | |
a7519a3c RH |
1674 | amt = sizeof (struct alpha_elf_got_entry); |
1675 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1676 | if (!gotent) | |
1677 | return NULL; | |
9e756d64 | 1678 | |
a7519a3c RH |
1679 | gotent->gotobj = abfd; |
1680 | gotent->addend = r_addend; | |
1681 | gotent->got_offset = -1; | |
6ec7057a | 1682 | gotent->plt_offset = -1; |
a7519a3c RH |
1683 | gotent->use_count = 1; |
1684 | gotent->reloc_type = r_type; | |
1685 | gotent->reloc_done = 0; | |
1686 | gotent->reloc_xlated = 0; | |
9e756d64 | 1687 | |
a7519a3c RH |
1688 | gotent->next = *slot; |
1689 | *slot = gotent; | |
9e756d64 | 1690 | |
a7519a3c RH |
1691 | entry_size = alpha_got_entry_size (r_type); |
1692 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1693 | if (!h) | |
1694 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1695 | } |
a7519a3c RH |
1696 | else |
1697 | gotent->use_count += 1; | |
9e756d64 | 1698 | |
a7519a3c | 1699 | return gotent; |
9e756d64 RH |
1700 | } |
1701 | ||
6ec7057a RH |
1702 | static bfd_boolean |
1703 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1704 | { | |
1705 | return ((ah->root.type == STT_FUNC | |
1706 | || ah->root.root.type == bfd_link_hash_undefweak | |
1707 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1708 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1709 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1710 | } |
1711 | ||
a7519a3c RH |
1712 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1713 | ||
b34976b6 | 1714 | static bfd_boolean |
a7519a3c RH |
1715 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1716 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1717 | { |
a7519a3c RH |
1718 | bfd *dynobj; |
1719 | asection *sreloc; | |
1720 | const char *rel_sec_name; | |
252b5132 | 1721 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1722 | struct alpha_elf_link_hash_entry **sym_hashes; |
1723 | const Elf_Internal_Rela *rel, *relend; | |
a7519a3c | 1724 | bfd_size_type amt; |
252b5132 | 1725 | |
a7519a3c RH |
1726 | if (info->relocatable) |
1727 | return TRUE; | |
252b5132 | 1728 | |
a7519a3c RH |
1729 | /* Don't do anything special with non-loaded, non-alloced sections. |
1730 | In particular, any relocs in such sections should not affect GOT | |
1731 | and PLT reference counting (ie. we don't allow them to create GOT | |
1732 | or PLT entries), there's no possibility or desire to optimize TLS | |
1733 | relocs, and there's not much point in propagating relocs to shared | |
1734 | libs that the dynamic linker won't relocate. */ | |
1735 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1736 | return TRUE; |
252b5132 | 1737 | |
a7519a3c RH |
1738 | dynobj = elf_hash_table(info)->dynobj; |
1739 | if (dynobj == NULL) | |
1740 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
252b5132 | 1741 | |
a7519a3c RH |
1742 | sreloc = NULL; |
1743 | rel_sec_name = NULL; | |
1744 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1745 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
a7519a3c RH |
1746 | |
1747 | relend = relocs + sec->reloc_count; | |
1748 | for (rel = relocs; rel < relend; ++rel) | |
1749 | { | |
1750 | enum { | |
1751 | NEED_GOT = 1, | |
1752 | NEED_GOT_ENTRY = 2, | |
1753 | NEED_DYNREL = 4 | |
1754 | }; | |
1755 | ||
1756 | unsigned long r_symndx, r_type; | |
1757 | struct alpha_elf_link_hash_entry *h; | |
1758 | unsigned int gotent_flags; | |
1759 | bfd_boolean maybe_dynamic; | |
1760 | unsigned int need; | |
1761 | bfd_vma addend; | |
1762 | ||
1763 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1764 | if (r_symndx < symtab_hdr->sh_info) | |
1765 | h = NULL; | |
1766 | else | |
1767 | { | |
1768 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1769 | |
a7519a3c RH |
1770 | while (h->root.root.type == bfd_link_hash_indirect |
1771 | || h->root.root.type == bfd_link_hash_warning) | |
1772 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1773 | |
a7519a3c RH |
1774 | h->root.ref_regular = 1; |
1775 | } | |
252b5132 | 1776 | |
a7519a3c RH |
1777 | /* We can only get preliminary data on whether a symbol is |
1778 | locally or externally defined, as not all of the input files | |
1779 | have yet been processed. Do something with what we know, as | |
1780 | this may help reduce memory usage and processing time later. */ | |
1781 | maybe_dynamic = FALSE; | |
1782 | if (h && ((info->shared | |
1783 | && (!info->symbolic | |
1784 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1785 | || !h->root.def_regular | |
1786 | || h->root.root.type == bfd_link_hash_defweak)) | |
1787 | maybe_dynamic = TRUE; | |
252b5132 | 1788 | |
a7519a3c RH |
1789 | need = 0; |
1790 | gotent_flags = 0; | |
1791 | r_type = ELF64_R_TYPE (rel->r_info); | |
1792 | addend = rel->r_addend; | |
9e756d64 | 1793 | |
9e756d64 RH |
1794 | switch (r_type) |
1795 | { | |
1796 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1797 | need = NEED_GOT | NEED_GOT_ENTRY; |
1798 | ||
1799 | /* Remember how this literal is used from its LITUSEs. | |
1800 | This will be important when it comes to decide if we can | |
1801 | create a .plt entry for a function symbol. */ | |
1802 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1803 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1804 | gotent_flags |= 1 << rel->r_addend; |
1805 | --rel; | |
1806 | ||
1807 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1808 | if (gotent_flags == 0) | |
1809 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1810 | break; | |
1811 | ||
1812 | case R_ALPHA_GPDISP: | |
1813 | case R_ALPHA_GPREL16: | |
1814 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1815 | case R_ALPHA_GPRELHIGH: |
1816 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1817 | case R_ALPHA_BRSGP: |
1818 | need = NEED_GOT; | |
1819 | break; | |
1820 | ||
1821 | case R_ALPHA_REFLONG: | |
1822 | case R_ALPHA_REFQUAD: | |
1823 | if (info->shared || maybe_dynamic) | |
1824 | need = NEED_DYNREL; | |
cc03ec80 RH |
1825 | break; |
1826 | ||
9e756d64 | 1827 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1828 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1829 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1830 | r_symndx = 0; |
a7519a3c RH |
1831 | h = 0; |
1832 | maybe_dynamic = FALSE; | |
1833 | /* FALLTHRU */ | |
1834 | ||
1835 | case R_ALPHA_TLSGD: | |
1836 | case R_ALPHA_GOTDTPREL: | |
1837 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1838 | break; |
cc03ec80 | 1839 | |
a7519a3c RH |
1840 | case R_ALPHA_GOTTPREL: |
1841 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1842 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1843 | if (info->shared) | |
1844 | info->flags |= DF_STATIC_TLS; | |
1845 | break; | |
1846 | ||
1847 | case R_ALPHA_TPREL64: | |
1848 | if (info->shared || maybe_dynamic) | |
1849 | need = NEED_DYNREL; | |
1850 | if (info->shared) | |
1851 | info->flags |= DF_STATIC_TLS; | |
1852 | break; | |
252b5132 RH |
1853 | } |
1854 | ||
a7519a3c | 1855 | if (need & NEED_GOT) |
252b5132 | 1856 | { |
85d162e6 | 1857 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
6cdc0ccc | 1858 | { |
a7519a3c RH |
1859 | if (!elf64_alpha_create_got_section (abfd, info)) |
1860 | return FALSE; | |
c328dc3f | 1861 | } |
252b5132 | 1862 | } |
252b5132 | 1863 | |
a7519a3c RH |
1864 | if (need & NEED_GOT_ENTRY) |
1865 | { | |
1866 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1867 | |
a7519a3c RH |
1868 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1869 | if (!gotent) | |
1870 | return FALSE; | |
4a67a098 | 1871 | |
a7519a3c | 1872 | if (gotent_flags) |
cc03ec80 | 1873 | { |
a7519a3c RH |
1874 | gotent->flags |= gotent_flags; |
1875 | if (h) | |
1876 | { | |
1877 | gotent_flags |= h->flags; | |
1878 | h->flags = gotent_flags; | |
4a67a098 | 1879 | |
a7519a3c | 1880 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1881 | /* ??? It appears that we won't make it into |
1882 | adjust_dynamic_symbol for symbols that remain | |
1883 | totally undefined. Copying this check here means | |
1884 | we can create a plt entry for them too. */ | |
1885 | h->root.needs_plt | |
1886 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1887 | } | |
a7519a3c | 1888 | } |
252b5132 RH |
1889 | } |
1890 | ||
a7519a3c | 1891 | if (need & NEED_DYNREL) |
9e756d64 | 1892 | { |
a7519a3c | 1893 | if (rel_sec_name == NULL) |
9e756d64 | 1894 | { |
a7519a3c RH |
1895 | rel_sec_name = (bfd_elf_string_from_elf_section |
1896 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1897 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1898 | if (rel_sec_name == NULL) | |
1899 | return FALSE; | |
1900 | ||
1901 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1902 | && strcmp (bfd_get_section_name (abfd, sec), | |
1903 | rel_sec_name+5) == 0); | |
9e756d64 | 1904 | } |
a7519a3c RH |
1905 | |
1906 | /* We need to create the section here now whether we eventually | |
1907 | use it or not so that it gets mapped to an output section by | |
1908 | the linker. If not used, we'll kill it in | |
1909 | size_dynamic_sections. */ | |
1910 | if (sreloc == NULL) | |
9e756d64 | 1911 | { |
a7519a3c RH |
1912 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
1913 | if (sreloc == NULL) | |
1914 | { | |
1915 | flagword flags; | |
1916 | ||
1917 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1918 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1919 | if (sec->flags & SEC_ALLOC) | |
1920 | flags |= SEC_ALLOC | SEC_LOAD; | |
1921 | sreloc = bfd_make_section_with_flags (dynobj, | |
1922 | rel_sec_name, | |
1923 | flags); | |
1924 | if (sreloc == NULL | |
1925 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1926 | return FALSE; | |
1927 | } | |
9e756d64 | 1928 | } |
252b5132 | 1929 | |
a7519a3c RH |
1930 | if (h) |
1931 | { | |
1932 | /* Since we havn't seen all of the input symbols yet, we | |
1933 | don't know whether we'll actually need a dynamic relocation | |
1934 | entry for this reloc. So make a record of it. Once we | |
1935 | find out if this thing needs dynamic relocation we'll | |
1936 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1937 | |
a7519a3c | 1938 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1939 | |
a7519a3c RH |
1940 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1941 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1942 | break; | |
252b5132 | 1943 | |
a7519a3c RH |
1944 | if (!rent) |
1945 | { | |
1946 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1947 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1948 | if (!rent) | |
1949 | return FALSE; | |
252b5132 | 1950 | |
a7519a3c RH |
1951 | rent->srel = sreloc; |
1952 | rent->rtype = r_type; | |
1953 | rent->count = 1; | |
1954 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1955 | |
a7519a3c RH |
1956 | rent->next = h->reloc_entries; |
1957 | h->reloc_entries = rent; | |
1958 | } | |
1959 | else | |
1960 | rent->count++; | |
1961 | } | |
1962 | else if (info->shared) | |
1963 | { | |
1964 | /* If this is a shared library, and the section is to be | |
1965 | loaded into memory, we need a RELATIVE reloc. */ | |
1966 | sreloc->size += sizeof (Elf64_External_Rela); | |
1967 | if (sec->flags & SEC_READONLY) | |
1968 | info->flags |= DF_TEXTREL; | |
1969 | } | |
252b5132 RH |
1970 | } |
1971 | } | |
1972 | ||
b34976b6 | 1973 | return TRUE; |
252b5132 | 1974 | } |
252b5132 | 1975 | |
a7519a3c RH |
1976 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1977 | regular object. The current definition is in some section of the | |
1978 | dynamic object, but we're not including those sections. We have to | |
1979 | change the definition to something the rest of the link can | |
1980 | understand. */ | |
252b5132 | 1981 | |
b34976b6 | 1982 | static bfd_boolean |
a7519a3c RH |
1983 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
1984 | struct elf_link_hash_entry *h) | |
252b5132 | 1985 | { |
a7519a3c RH |
1986 | bfd *dynobj; |
1987 | asection *s; | |
1988 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 1989 | |
a7519a3c RH |
1990 | dynobj = elf_hash_table(info)->dynobj; |
1991 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 1992 | |
a7519a3c | 1993 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
1994 | about whether this symbol should get a .plt entry. Irritatingly, it |
1995 | is common for folk to leave undefined symbols in shared libraries, | |
1996 | and they still expect lazy binding; accept undefined symbols in lieu | |
1997 | of STT_FUNC. */ | |
1998 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 1999 | { |
6ec7057a | 2000 | h->needs_plt = TRUE; |
252b5132 | 2001 | |
a7519a3c RH |
2002 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2003 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2004 | return FALSE; | |
204692d7 | 2005 | |
6ec7057a RH |
2006 | /* We need one plt entry per got subsection. Delay allocation of |
2007 | the actual plt entries until size_plt_section, called from | |
2008 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2009 | |
a7519a3c RH |
2010 | return TRUE; |
2011 | } | |
2012 | else | |
6ec7057a | 2013 | h->needs_plt = FALSE; |
252b5132 | 2014 | |
a7519a3c RH |
2015 | /* If this is a weak symbol, and there is a real definition, the |
2016 | processor independent code will have arranged for us to see the | |
2017 | real definition first, and we can just use the same value. */ | |
2018 | if (h->u.weakdef != NULL) | |
252b5132 | 2019 | { |
a7519a3c RH |
2020 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2021 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2022 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2023 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2024 | return TRUE; | |
252b5132 | 2025 | } |
a7519a3c RH |
2026 | |
2027 | /* This is a reference to a symbol defined by a dynamic object which | |
2028 | is not a function. The Alpha, since it uses .got entries for all | |
2029 | symbols even in regular objects, does not need the hackery of a | |
2030 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2031 | |
b34976b6 | 2032 | return TRUE; |
252b5132 RH |
2033 | } |
2034 | ||
a7519a3c RH |
2035 | /* Symbol versioning can create new symbols, and make our old symbols |
2036 | indirect to the new ones. Consolidate the got and reloc information | |
2037 | in these situations. */ | |
252b5132 | 2038 | |
b34976b6 | 2039 | static bfd_boolean |
a7519a3c RH |
2040 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2041 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2042 | { |
a7519a3c | 2043 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2044 | |
a7519a3c RH |
2045 | if (hi->root.root.type != bfd_link_hash_indirect) |
2046 | return TRUE; | |
2047 | hs = hi; | |
2048 | do { | |
2049 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2050 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2051 | |
a7519a3c RH |
2052 | /* Merge the flags. Whee. */ |
2053 | ||
2054 | hs->flags |= hi->flags; | |
2055 | ||
2056 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2057 | doing so, since we don't need it anymore. */ | |
2058 | ||
2059 | if (hs->got_entries == NULL) | |
2060 | hs->got_entries = hi->got_entries; | |
2061 | else | |
2062 | { | |
2063 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2064 | ||
2065 | gsh = hs->got_entries; | |
2066 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2067 | { |
a7519a3c RH |
2068 | gin = gi->next; |
2069 | for (gs = gsh; gs ; gs = gs->next) | |
2070 | if (gi->gotobj == gs->gotobj | |
2071 | && gi->reloc_type == gs->reloc_type | |
2072 | && gi->addend == gs->addend) | |
2073 | { | |
2074 | gi->use_count += gs->use_count; | |
2075 | goto got_found; | |
2076 | } | |
2077 | gi->next = hs->got_entries; | |
2078 | hs->got_entries = gi; | |
2079 | got_found:; | |
252b5132 | 2080 | } |
a7519a3c RH |
2081 | } |
2082 | hi->got_entries = NULL; | |
252b5132 | 2083 | |
a7519a3c RH |
2084 | /* And similar for the reloc entries. */ |
2085 | ||
2086 | if (hs->reloc_entries == NULL) | |
2087 | hs->reloc_entries = hi->reloc_entries; | |
2088 | else | |
2089 | { | |
2090 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2091 | ||
2092 | rsh = hs->reloc_entries; | |
2093 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2094 | { | |
2095 | rin = ri->next; | |
2096 | for (rs = rsh; rs ; rs = rs->next) | |
2097 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2098 | { | |
2099 | rs->count += ri->count; | |
2100 | goto found_reloc; | |
2101 | } | |
2102 | ri->next = hs->reloc_entries; | |
2103 | hs->reloc_entries = ri; | |
2104 | found_reloc:; | |
2105 | } | |
252b5132 | 2106 | } |
a7519a3c | 2107 | hi->reloc_entries = NULL; |
252b5132 | 2108 | |
b34976b6 | 2109 | return TRUE; |
252b5132 RH |
2110 | } |
2111 | ||
a7519a3c | 2112 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2113 | |
b34976b6 | 2114 | static bfd_boolean |
a7519a3c | 2115 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2116 | { |
a7519a3c RH |
2117 | int total = alpha_elf_tdata (a)->total_got_size; |
2118 | bfd *bsub; | |
252b5132 | 2119 | |
a7519a3c RH |
2120 | /* Trivial quick fallout test. */ |
2121 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2122 | return TRUE; | |
252b5132 | 2123 | |
a7519a3c RH |
2124 | /* By their nature, local .got entries cannot be merged. */ |
2125 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2126 | return FALSE; |
252b5132 | 2127 | |
a7519a3c RH |
2128 | /* Failing the common trivial comparison, we must effectively |
2129 | perform the merge. Not actually performing the merge means that | |
2130 | we don't have to store undo information in case we fail. */ | |
2131 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2132 | { | |
2133 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2134 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2135 | int i, n; | |
2136 | ||
2137 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2138 | for (i = 0; i < n; ++i) | |
2139 | { | |
2140 | struct alpha_elf_got_entry *ae, *be; | |
2141 | struct alpha_elf_link_hash_entry *h; | |
2142 | ||
2143 | h = hashes[i]; | |
2144 | while (h->root.root.type == bfd_link_hash_indirect | |
2145 | || h->root.root.type == bfd_link_hash_warning) | |
2146 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2147 | ||
2148 | for (be = h->got_entries; be ; be = be->next) | |
2149 | { | |
2150 | if (be->use_count == 0) | |
2151 | continue; | |
2152 | if (be->gotobj != b) | |
2153 | continue; | |
2154 | ||
2155 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2156 | if (ae->gotobj == a | |
2157 | && ae->reloc_type == be->reloc_type | |
2158 | && ae->addend == be->addend) | |
2159 | goto global_found; | |
2160 | ||
2161 | total += alpha_got_entry_size (be->reloc_type); | |
2162 | if (total > MAX_GOT_SIZE) | |
2163 | return FALSE; | |
2164 | global_found:; | |
2165 | } | |
2166 | } | |
2167 | } | |
252b5132 | 2168 | |
b34976b6 | 2169 | return TRUE; |
252b5132 RH |
2170 | } |
2171 | ||
a7519a3c | 2172 | /* Actually merge two .got tables. */ |
252b5132 | 2173 | |
a7519a3c RH |
2174 | static void |
2175 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2176 | { |
a7519a3c RH |
2177 | int total = alpha_elf_tdata (a)->total_got_size; |
2178 | bfd *bsub; | |
252b5132 | 2179 | |
a7519a3c RH |
2180 | /* Remember local expansion. */ |
2181 | { | |
2182 | int e = alpha_elf_tdata (b)->local_got_size; | |
2183 | total += e; | |
2184 | alpha_elf_tdata (a)->local_got_size += e; | |
2185 | } | |
252b5132 | 2186 | |
a7519a3c RH |
2187 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2188 | { | |
2189 | struct alpha_elf_got_entry **local_got_entries; | |
2190 | struct alpha_elf_link_hash_entry **hashes; | |
2191 | Elf_Internal_Shdr *symtab_hdr; | |
2192 | int i, n; | |
252b5132 | 2193 | |
a7519a3c RH |
2194 | /* Let the local .got entries know they are part of a new subsegment. */ |
2195 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2196 | if (local_got_entries) | |
2197 | { | |
2198 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2199 | for (i = 0; i < n; ++i) | |
2200 | { | |
2201 | struct alpha_elf_got_entry *ent; | |
2202 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2203 | ent->gotobj = a; | |
2204 | } | |
2205 | } | |
252b5132 | 2206 | |
a7519a3c RH |
2207 | /* Merge the global .got entries. */ |
2208 | hashes = alpha_elf_sym_hashes (bsub); | |
2209 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2210 | |
a7519a3c RH |
2211 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2212 | for (i = 0; i < n; ++i) | |
2213 | { | |
2214 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2215 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2216 | |
a7519a3c RH |
2217 | h = hashes[i]; |
2218 | while (h->root.root.type == bfd_link_hash_indirect | |
2219 | || h->root.root.type == bfd_link_hash_warning) | |
2220 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2221 | |
a7519a3c RH |
2222 | pbe = start = &h->got_entries; |
2223 | while ((be = *pbe) != NULL) | |
2224 | { | |
2225 | if (be->use_count == 0) | |
2226 | { | |
2227 | *pbe = be->next; | |
2228 | memset (be, 0xa5, sizeof (*be)); | |
2229 | goto kill; | |
2230 | } | |
2231 | if (be->gotobj != b) | |
2232 | goto next; | |
2233 | ||
2234 | for (ae = *start; ae ; ae = ae->next) | |
2235 | if (ae->gotobj == a | |
2236 | && ae->reloc_type == be->reloc_type | |
2237 | && ae->addend == be->addend) | |
2238 | { | |
2239 | ae->flags |= be->flags; | |
2240 | ae->use_count += be->use_count; | |
2241 | *pbe = be->next; | |
2242 | memset (be, 0xa5, sizeof (*be)); | |
2243 | goto kill; | |
2244 | } | |
2245 | be->gotobj = a; | |
2246 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2247 | |
a7519a3c RH |
2248 | next:; |
2249 | pbe = &be->next; | |
2250 | kill:; | |
2251 | } | |
2252 | } | |
252b5132 | 2253 | |
a7519a3c RH |
2254 | alpha_elf_tdata (bsub)->gotobj = a; |
2255 | } | |
2256 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2257 | |
a7519a3c RH |
2258 | /* Merge the two in_got chains. */ |
2259 | { | |
2260 | bfd *next; | |
252b5132 | 2261 | |
a7519a3c RH |
2262 | bsub = a; |
2263 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2264 | bsub = next; | |
252b5132 | 2265 | |
a7519a3c RH |
2266 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2267 | } | |
252b5132 | 2268 | } |
a7519a3c RH |
2269 | |
2270 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2271 | |
b34976b6 | 2272 | static bfd_boolean |
a7519a3c RH |
2273 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2274 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2275 | { |
a7519a3c | 2276 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2277 | |
a7519a3c RH |
2278 | if (h->root.root.type == bfd_link_hash_warning) |
2279 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2280 | |
a7519a3c RH |
2281 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2282 | if (gotent->use_count > 0) | |
2283 | { | |
2284 | struct alpha_elf_obj_tdata *td; | |
2285 | bfd_size_type *plge; | |
252b5132 | 2286 | |
a7519a3c | 2287 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2288 | plge = &td->got->size; |
2289 | gotent->got_offset = *plge; | |
2290 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2291 | } | |
252b5132 | 2292 | |
6ec7057a | 2293 | return TRUE; |
a7519a3c | 2294 | } |
252b5132 | 2295 | |
a7519a3c RH |
2296 | static void |
2297 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2298 | { | |
2299 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
252b5132 | 2300 | |
a7519a3c RH |
2301 | /* First, zero out the .got sizes, as we may be recalculating the |
2302 | .got after optimizing it. */ | |
2303 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2304 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2305 | |
a7519a3c RH |
2306 | /* Next, fill in the offsets for all the global entries. */ |
2307 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2308 | elf64_alpha_calc_got_offsets_for_symbol, | |
2309 | NULL); | |
252b5132 | 2310 | |
a7519a3c RH |
2311 | /* Finally, fill in the offsets for the local entries. */ |
2312 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2313 | { | |
2314 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2315 | bfd *j; | |
252b5132 | 2316 | |
a7519a3c RH |
2317 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2318 | { | |
2319 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2320 | int k, n; | |
252b5132 | 2321 | |
a7519a3c RH |
2322 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2323 | if (!local_got_entries) | |
2324 | continue; | |
252b5132 | 2325 | |
a7519a3c RH |
2326 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2327 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2328 | if (gotent->use_count > 0) | |
2329 | { | |
2330 | gotent->got_offset = got_offset; | |
2331 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2332 | } | |
2333 | } | |
252b5132 | 2334 | |
a7519a3c RH |
2335 | alpha_elf_tdata(i)->got->size = got_offset; |
2336 | } | |
2337 | } | |
252b5132 | 2338 | |
a7519a3c | 2339 | /* Constructs the gots. */ |
252b5132 | 2340 | |
b34976b6 | 2341 | static bfd_boolean |
a7519a3c | 2342 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2343 | { |
a7519a3c RH |
2344 | bfd *i, *got_list, *cur_got_obj = NULL; |
2345 | int something_changed = 0; | |
252b5132 | 2346 | |
a7519a3c | 2347 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2348 | |
a7519a3c RH |
2349 | /* On the first time through, pretend we have an existing got list |
2350 | consisting of all of the input files. */ | |
2351 | if (got_list == NULL) | |
252b5132 | 2352 | { |
a7519a3c | 2353 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2354 | { |
a7519a3c RH |
2355 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2356 | if (this_got == NULL) | |
2357 | continue; | |
252b5132 | 2358 | |
a7519a3c RH |
2359 | /* We are assuming no merging has yet occurred. */ |
2360 | BFD_ASSERT (this_got == i); | |
252b5132 | 2361 | |
a7519a3c | 2362 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2363 | { |
a7519a3c RH |
2364 | /* Yikes! A single object file has too many entries. */ |
2365 | (*_bfd_error_handler) | |
2366 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2367 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2368 | return FALSE; |
252b5132 | 2369 | } |
252b5132 | 2370 | |
a7519a3c RH |
2371 | if (got_list == NULL) |
2372 | got_list = this_got; | |
2373 | else | |
2374 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2375 | cur_got_obj = this_got; | |
252b5132 RH |
2376 | } |
2377 | ||
a7519a3c RH |
2378 | /* Strange degenerate case of no got references. */ |
2379 | if (got_list == NULL) | |
2380 | return TRUE; | |
2381 | ||
2382 | alpha_elf_hash_table (info)->got_list = got_list; | |
2383 | ||
2384 | /* Force got offsets to be recalculated. */ | |
2385 | something_changed = 1; | |
2386 | } | |
2387 | ||
2388 | cur_got_obj = got_list; | |
2389 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2390 | while (i != NULL) | |
2391 | { | |
2392 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2393 | { |
a7519a3c | 2394 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2395 | |
a7519a3c RH |
2396 | alpha_elf_tdata(i)->got->size = 0; |
2397 | i = alpha_elf_tdata(i)->got_link_next; | |
2398 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2399 | ||
2400 | something_changed = 1; | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | cur_got_obj = i; | |
2405 | i = alpha_elf_tdata(i)->got_link_next; | |
2406 | } | |
252b5132 RH |
2407 | } |
2408 | ||
a7519a3c RH |
2409 | /* Once the gots have been merged, fill in the got offsets for |
2410 | everything therein. */ | |
2411 | if (1 || something_changed) | |
2412 | elf64_alpha_calc_got_offsets (info); | |
252b5132 | 2413 | |
a7519a3c | 2414 | return TRUE; |
252b5132 | 2415 | } |
252b5132 | 2416 | |
b34976b6 | 2417 | static bfd_boolean |
a7519a3c | 2418 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2419 | { |
a7519a3c RH |
2420 | asection *splt = (asection *) data; |
2421 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2422 | bfd_boolean saw_one = FALSE; |
252b5132 | 2423 | |
a7519a3c RH |
2424 | /* If we didn't need an entry before, we still don't. */ |
2425 | if (!h->root.needs_plt) | |
2426 | return TRUE; | |
e92d460e | 2427 | |
6ec7057a | 2428 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2429 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2430 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2431 | && gotent->use_count > 0) | |
6ec7057a RH |
2432 | { |
2433 | if (splt->size == 0) | |
2434 | splt->size = PLT_HEADER_SIZE; | |
2435 | gotent->plt_offset = splt->size; | |
2436 | splt->size += PLT_ENTRY_SIZE; | |
2437 | saw_one = TRUE; | |
2438 | } | |
a7519a3c | 2439 | |
6ec7057a RH |
2440 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2441 | if (!saw_one) | |
2442 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2443 | |
2444 | return TRUE; | |
2445 | } | |
2446 | ||
2447 | /* Called from relax_section to rebuild the PLT in light of | |
2448 | potential changes in the function's status. */ | |
2449 | ||
2450 | static bfd_boolean | |
2451 | elf64_alpha_size_plt_section (struct bfd_link_info *info) | |
2452 | { | |
6ec7057a | 2453 | asection *splt, *spltrel, *sgotplt; |
a7519a3c RH |
2454 | unsigned long entries; |
2455 | bfd *dynobj; | |
2456 | ||
2457 | dynobj = elf_hash_table(info)->dynobj; | |
6ec7057a | 2458 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
a7519a3c | 2459 | if (splt == NULL) |
b34976b6 | 2460 | return TRUE; |
252b5132 | 2461 | |
a7519a3c | 2462 | splt->size = 0; |
252b5132 | 2463 | |
a7519a3c RH |
2464 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2465 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2466 | |
a7519a3c RH |
2467 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2468 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2469 | if (splt->size) | |
6ec7057a RH |
2470 | { |
2471 | if (elf64_alpha_use_secureplt) | |
2472 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2473 | else | |
2474 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2475 | } | |
a7519a3c RH |
2476 | else |
2477 | entries = 0; | |
2478 | spltrel->size = entries * sizeof (Elf64_External_Rela); | |
e92d460e | 2479 | |
6ec7057a RH |
2480 | /* When using the secureplt, we need two words somewhere in the data |
2481 | segment for the dynamic linker to tell us where to go. This is the | |
2482 | entire contents of the .got.plt section. */ | |
2483 | if (elf64_alpha_use_secureplt) | |
2484 | { | |
2485 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2486 | sgotplt->size = entries ? 16 : 0; | |
2487 | } | |
2488 | ||
a7519a3c RH |
2489 | return TRUE; |
2490 | } | |
e92d460e | 2491 | |
a7519a3c RH |
2492 | static bfd_boolean |
2493 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2494 | struct bfd_link_info *info) | |
2495 | { | |
2496 | bfd *i; | |
252b5132 | 2497 | |
a7519a3c RH |
2498 | if (info->relocatable) |
2499 | return TRUE; | |
252b5132 | 2500 | |
a7519a3c RH |
2501 | /* First, take care of the indirect symbols created by versioning. */ |
2502 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2503 | elf64_alpha_merge_ind_symbols, | |
2504 | NULL); | |
252b5132 | 2505 | |
a7519a3c RH |
2506 | if (!elf64_alpha_size_got_sections (info)) |
2507 | return FALSE; | |
252b5132 | 2508 | |
a7519a3c RH |
2509 | /* Allocate space for all of the .got subsections. */ |
2510 | i = alpha_elf_hash_table (info)->got_list; | |
2511 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2512 | { |
a7519a3c RH |
2513 | asection *s = alpha_elf_tdata(i)->got; |
2514 | if (s->size > 0) | |
2515 | { | |
2516 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2517 | if (s->contents == NULL) | |
2518 | return FALSE; | |
2519 | } | |
252b5132 RH |
2520 | } |
2521 | ||
b34976b6 | 2522 | return TRUE; |
252b5132 | 2523 | } |
3765b1be | 2524 | |
a7519a3c | 2525 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2526 | |
a7519a3c RH |
2527 | static int |
2528 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2529 | { | |
2530 | switch (r_type) | |
3765b1be | 2531 | { |
a7519a3c RH |
2532 | /* May appear in GOT entries. */ |
2533 | case R_ALPHA_TLSGD: | |
2534 | return (dynamic ? 2 : shared ? 1 : 0); | |
2535 | case R_ALPHA_TLSLDM: | |
2536 | return shared; | |
2537 | case R_ALPHA_LITERAL: | |
2538 | case R_ALPHA_GOTTPREL: | |
2539 | return dynamic || shared; | |
2540 | case R_ALPHA_GOTDTPREL: | |
2541 | return dynamic; | |
3765b1be | 2542 | |
a7519a3c RH |
2543 | /* May appear in data sections. */ |
2544 | case R_ALPHA_REFLONG: | |
2545 | case R_ALPHA_REFQUAD: | |
2546 | case R_ALPHA_TPREL64: | |
2547 | return dynamic || shared; | |
3765b1be | 2548 | |
a7519a3c RH |
2549 | /* Everything else is illegal. We'll issue an error during |
2550 | relocate_section. */ | |
2551 | default: | |
2552 | return 0; | |
2553 | } | |
2554 | } | |
3765b1be | 2555 | |
a7519a3c | 2556 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2557 | |
a7519a3c RH |
2558 | static bfd_boolean |
2559 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2560 | struct bfd_link_info *info) | |
2561 | { | |
2562 | bfd_boolean dynamic; | |
2563 | struct alpha_elf_reloc_entry *relent; | |
2564 | unsigned long entries; | |
3765b1be | 2565 | |
a7519a3c RH |
2566 | if (h->root.root.type == bfd_link_hash_warning) |
2567 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2568 | |
a7519a3c RH |
2569 | /* If the symbol was defined as a common symbol in a regular object |
2570 | file, and there was no definition in any dynamic object, then the | |
2571 | linker will have allocated space for the symbol in a common | |
2572 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2573 | set. This is done for dynamic symbols in | |
2574 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2575 | symbols, somehow. */ | |
2576 | if (!h->root.def_regular | |
2577 | && h->root.ref_regular | |
2578 | && !h->root.def_dynamic | |
2579 | && (h->root.root.type == bfd_link_hash_defined | |
2580 | || h->root.root.type == bfd_link_hash_defweak) | |
2581 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2582 | h->root.def_regular = 1; | |
3765b1be | 2583 | |
a7519a3c RH |
2584 | /* If the symbol is dynamic, we'll need all the relocations in their |
2585 | natural form. If this is a shared object, and it has been forced | |
2586 | local, we'll need the same number of RELATIVE relocations. */ | |
2587 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2588 | |
a7519a3c RH |
2589 | /* If the symbol is a hidden undefined weak, then we never have any |
2590 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2591 | based on info->shared. */ | |
2592 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2593 | return TRUE; | |
2594 | ||
2595 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2596 | { |
a7519a3c RH |
2597 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2598 | info->shared); | |
2599 | if (entries) | |
2600 | { | |
2601 | relent->srel->size += | |
2602 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2603 | if (relent->reltext) | |
2604 | info->flags |= DT_TEXTREL; | |
2605 | } | |
2606 | } | |
3765b1be | 2607 | |
a7519a3c RH |
2608 | return TRUE; |
2609 | } | |
3765b1be | 2610 | |
a7519a3c RH |
2611 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2612 | global symbols. */ | |
3765b1be | 2613 | |
a7519a3c RH |
2614 | static bfd_boolean |
2615 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2616 | struct bfd_link_info *info) | |
2617 | { | |
2618 | bfd_boolean dynamic; | |
2619 | struct alpha_elf_got_entry *gotent; | |
2620 | unsigned long entries; | |
3765b1be | 2621 | |
a7519a3c RH |
2622 | if (h->root.root.type == bfd_link_hash_warning) |
2623 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2624 | ||
6ec7057a RH |
2625 | /* If we're using a plt for this symbol, then all of its relocations |
2626 | for its got entries go into .rela.plt. */ | |
2627 | if (h->root.needs_plt) | |
2628 | return TRUE; | |
2629 | ||
a7519a3c RH |
2630 | /* If the symbol is dynamic, we'll need all the relocations in their |
2631 | natural form. If this is a shared object, and it has been forced | |
2632 | local, we'll need the same number of RELATIVE relocations. */ | |
2633 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2634 | ||
2635 | /* If the symbol is a hidden undefined weak, then we never have any | |
2636 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2637 | based on info->shared. */ | |
2638 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2639 | return TRUE; | |
2640 | ||
2641 | entries = 0; | |
2642 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2643 | if (gotent->use_count > 0) | |
2644 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2645 | dynamic, info->shared); | |
2646 | ||
a7519a3c RH |
2647 | if (entries > 0) |
2648 | { | |
2649 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2650 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2651 | BFD_ASSERT (srel != NULL); | |
2652 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2653 | } |
3765b1be | 2654 | |
a7519a3c | 2655 | return TRUE; |
3765b1be RH |
2656 | } |
2657 | ||
a7519a3c | 2658 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2659 | |
b34976b6 | 2660 | static bfd_boolean |
a7519a3c | 2661 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2662 | { |
a7519a3c RH |
2663 | unsigned long entries; |
2664 | bfd *i, *dynobj; | |
2665 | asection *srel; | |
252b5132 | 2666 | |
a7519a3c RH |
2667 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2668 | require attention for the main application as well. */ | |
252b5132 | 2669 | |
a7519a3c RH |
2670 | entries = 0; |
2671 | for (i = alpha_elf_hash_table(info)->got_list; | |
2672 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2673 | { | |
2674 | bfd *j; | |
3241278a | 2675 | |
a7519a3c RH |
2676 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2677 | { | |
2678 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2679 | int k, n; | |
252b5132 | 2680 | |
a7519a3c RH |
2681 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2682 | if (!local_got_entries) | |
2683 | continue; | |
252b5132 | 2684 | |
a7519a3c RH |
2685 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2686 | for (gotent = local_got_entries[k]; | |
2687 | gotent ; gotent = gotent->next) | |
2688 | if (gotent->use_count > 0) | |
2689 | entries += (alpha_dynamic_entries_for_reloc | |
2690 | (gotent->reloc_type, 0, info->shared)); | |
2691 | } | |
2692 | } | |
3765b1be | 2693 | |
a7519a3c RH |
2694 | dynobj = elf_hash_table(info)->dynobj; |
2695 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2696 | if (!srel) | |
2697 | { | |
2698 | BFD_ASSERT (entries == 0); | |
2699 | return TRUE; | |
2700 | } | |
2701 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2702 | |
a7519a3c RH |
2703 | /* Now do the non-local symbols. */ |
2704 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2705 | elf64_alpha_size_rela_got_1, info); | |
252b5132 | 2706 | |
a7519a3c RH |
2707 | return TRUE; |
2708 | } | |
252b5132 | 2709 | |
a7519a3c | 2710 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2711 | |
a7519a3c RH |
2712 | static bfd_boolean |
2713 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2714 | struct bfd_link_info *info) | |
2715 | { | |
2716 | bfd *dynobj; | |
2717 | asection *s; | |
2718 | bfd_boolean relplt; | |
3765b1be | 2719 | |
a7519a3c RH |
2720 | dynobj = elf_hash_table(info)->dynobj; |
2721 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2722 | |
a7519a3c RH |
2723 | if (elf_hash_table (info)->dynamic_sections_created) |
2724 | { | |
2725 | /* Set the contents of the .interp section to the interpreter. */ | |
2726 | if (info->executable) | |
252b5132 | 2727 | { |
a7519a3c RH |
2728 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2729 | BFD_ASSERT (s != NULL); | |
2730 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2731 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2732 | } | |
3765b1be | 2733 | |
a7519a3c RH |
2734 | /* Now that we've seen all of the input files, we can decide which |
2735 | symbols need dynamic relocation entries and which don't. We've | |
2736 | collected information in check_relocs that we can now apply to | |
2737 | size the dynamic relocation sections. */ | |
2738 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2739 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2740 | |
a7519a3c | 2741 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2742 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2743 | } |
2744 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2745 | |
a7519a3c RH |
2746 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2747 | determined the sizes of the various dynamic sections. Allocate | |
2748 | memory for them. */ | |
2749 | relplt = FALSE; | |
2750 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2751 | { | |
2752 | const char *name; | |
3765b1be | 2753 | |
a7519a3c RH |
2754 | if (!(s->flags & SEC_LINKER_CREATED)) |
2755 | continue; | |
cc03ec80 | 2756 | |
a7519a3c RH |
2757 | /* It's OK to base decisions on the section name, because none |
2758 | of the dynobj section names depend upon the input files. */ | |
2759 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2760 | |
a7519a3c | 2761 | if (strncmp (name, ".rela", 5) == 0) |
3765b1be | 2762 | { |
c456f082 | 2763 | if (s->size != 0) |
a7519a3c | 2764 | { |
c456f082 | 2765 | if (strcmp (name, ".rela.plt") == 0) |
a7519a3c | 2766 | relplt = TRUE; |
252b5132 | 2767 | |
a7519a3c RH |
2768 | /* We use the reloc_count field as a counter if we need |
2769 | to copy relocs into the output file. */ | |
2770 | s->reloc_count = 0; | |
252b5132 | 2771 | } |
3765b1be | 2772 | } |
c456f082 AM |
2773 | else if (strncmp (name, ".got", 4) != 0 |
2774 | && strcmp (name, ".plt") != 0 | |
2775 | && strcmp (name, ".dynbss") != 0) | |
3765b1be | 2776 | { |
a7519a3c RH |
2777 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2778 | continue; | |
2779 | } | |
252b5132 | 2780 | |
c456f082 AM |
2781 | if (s->size == 0) |
2782 | { | |
2783 | /* If we don't need this section, strip it from the output file. | |
2784 | This is to handle .rela.bss and .rela.plt. We must create it | |
2785 | in create_dynamic_sections, because it must be created before | |
2786 | the linker maps input sections to output sections. The | |
2787 | linker does that before adjust_dynamic_symbol is called, and | |
2788 | it is that function which decides whether anything needs to | |
2789 | go into these sections. */ | |
2790 | s->flags |= SEC_EXCLUDE; | |
2791 | } | |
2792 | else if ((s->flags & SEC_HAS_CONTENTS) != 0) | |
a7519a3c RH |
2793 | { |
2794 | /* Allocate memory for the section contents. */ | |
2795 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
c456f082 | 2796 | if (s->contents == NULL) |
b34976b6 | 2797 | return FALSE; |
a7519a3c RH |
2798 | } |
2799 | } | |
3765b1be | 2800 | |
a7519a3c RH |
2801 | if (elf_hash_table (info)->dynamic_sections_created) |
2802 | { | |
2803 | /* Add some entries to the .dynamic section. We fill in the | |
2804 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2805 | must add the entries now so that we get the correct size for | |
2806 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2807 | dynamic linker and used by the debugger. */ | |
2808 | #define add_dynamic_entry(TAG, VAL) \ | |
2809 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2810 | |
a7519a3c RH |
2811 | if (info->executable) |
2812 | { | |
2813 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2814 | return FALSE; | |
3765b1be RH |
2815 | } |
2816 | ||
a7519a3c | 2817 | if (relplt) |
3765b1be | 2818 | { |
a7519a3c RH |
2819 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2820 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2821 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2822 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2823 | return FALSE; | |
6ec7057a RH |
2824 | |
2825 | if (elf64_alpha_use_secureplt | |
2826 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2827 | return FALSE; | |
a7519a3c | 2828 | } |
252b5132 | 2829 | |
a7519a3c RH |
2830 | if (!add_dynamic_entry (DT_RELA, 0) |
2831 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2832 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2833 | return FALSE; | |
2834 | ||
2835 | if (info->flags & DF_TEXTREL) | |
2836 | { | |
2837 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2838 | return FALSE; | |
252b5132 RH |
2839 | } |
2840 | } | |
a7519a3c | 2841 | #undef add_dynamic_entry |
252b5132 | 2842 | |
b34976b6 | 2843 | return TRUE; |
252b5132 | 2844 | } |
a7519a3c RH |
2845 | \f |
2846 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2847 | |
a7519a3c RH |
2848 | Currently I'm only handling what I can do with existing compiler |
2849 | and assembler support, which means no instructions are removed, | |
2850 | though some may be nopped. At this time GCC does not emit enough | |
2851 | information to do all of the relaxing that is possible. It will | |
2852 | take some not small amount of work for that to happen. | |
252b5132 | 2853 | |
a7519a3c RH |
2854 | There are a couple of interesting papers that I once read on this |
2855 | subject, that I cannot find references to at the moment, that | |
2856 | related to Alpha in particular. They are by David Wall, then of | |
2857 | DEC WRL. */ | |
252b5132 | 2858 | |
a7519a3c RH |
2859 | struct alpha_relax_info |
2860 | { | |
2861 | bfd *abfd; | |
2862 | asection *sec; | |
2863 | bfd_byte *contents; | |
2864 | Elf_Internal_Shdr *symtab_hdr; | |
2865 | Elf_Internal_Rela *relocs, *relend; | |
2866 | struct bfd_link_info *link_info; | |
2867 | bfd_vma gp; | |
2868 | bfd *gotobj; | |
2869 | asection *tsec; | |
2870 | struct alpha_elf_link_hash_entry *h; | |
2871 | struct alpha_elf_got_entry **first_gotent; | |
2872 | struct alpha_elf_got_entry *gotent; | |
2873 | bfd_boolean changed_contents; | |
2874 | bfd_boolean changed_relocs; | |
2875 | unsigned char other; | |
2876 | }; | |
252b5132 | 2877 | |
a7519a3c RH |
2878 | static Elf_Internal_Rela * |
2879 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2880 | Elf_Internal_Rela *relend, | |
2881 | bfd_vma offset, int type) | |
2882 | { | |
2883 | while (rel < relend) | |
252b5132 | 2884 | { |
a7519a3c RH |
2885 | if (rel->r_offset == offset |
2886 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2887 | return rel; | |
2888 | ++rel; | |
2889 | } | |
2890 | return NULL; | |
2891 | } | |
252b5132 | 2892 | |
a7519a3c RH |
2893 | static bfd_boolean |
2894 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2895 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2896 | { | |
2897 | unsigned int insn; | |
2898 | bfd_signed_vma disp; | |
252b5132 | 2899 | |
a7519a3c RH |
2900 | /* Get the instruction. */ |
2901 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2902 | |
a7519a3c RH |
2903 | if (insn >> 26 != OP_LDQ) |
2904 | { | |
2905 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2906 | ((*_bfd_error_handler) | |
2907 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2908 | info->abfd, info->sec, | |
2909 | (unsigned long) irel->r_offset, howto->name)); | |
2910 | return TRUE; | |
2911 | } | |
252b5132 | 2912 | |
a7519a3c RH |
2913 | /* Can't relax dynamic symbols. */ |
2914 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2915 | return TRUE; | |
252b5132 | 2916 | |
a7519a3c RH |
2917 | /* Can't use local-exec relocations in shared libraries. */ |
2918 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2919 | return TRUE; | |
252b5132 | 2920 | |
a7519a3c RH |
2921 | if (r_type == R_ALPHA_LITERAL) |
2922 | { | |
2923 | /* Look for nice constant addresses. This includes the not-uncommon | |
2924 | special case of 0 for undefweak symbols. */ | |
2925 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2926 | || (!info->link_info->shared | |
2927 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2928 | { | |
2929 | disp = 0; | |
2930 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2931 | insn |= (symval & 0xffff); | |
2932 | r_type = R_ALPHA_NONE; | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | disp = symval - info->gp; | |
2937 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2938 | r_type = R_ALPHA_GPREL16; | |
2939 | } | |
252b5132 RH |
2940 | } |
2941 | else | |
252b5132 | 2942 | { |
a7519a3c | 2943 | bfd_vma dtp_base, tp_base; |
252b5132 | 2944 | |
a7519a3c RH |
2945 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2946 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2947 | tp_base = alpha_get_tprel_base (info->link_info); | |
2948 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2949 | |
a7519a3c | 2950 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2951 | |
a7519a3c RH |
2952 | switch (r_type) |
2953 | { | |
2954 | case R_ALPHA_GOTDTPREL: | |
2955 | r_type = R_ALPHA_DTPREL16; | |
2956 | break; | |
2957 | case R_ALPHA_GOTTPREL: | |
2958 | r_type = R_ALPHA_TPREL16; | |
2959 | break; | |
2960 | default: | |
2961 | BFD_ASSERT (0); | |
2962 | return FALSE; | |
2963 | } | |
2964 | } | |
252b5132 | 2965 | |
a7519a3c | 2966 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 2967 | return TRUE; |
252b5132 | 2968 | |
a7519a3c RH |
2969 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
2970 | info->changed_contents = TRUE; | |
252b5132 | 2971 | |
a7519a3c RH |
2972 | /* Reduce the use count on this got entry by one, possibly |
2973 | eliminating it. */ | |
2974 | if (--info->gotent->use_count == 0) | |
252b5132 | 2975 | { |
a7519a3c RH |
2976 | int sz = alpha_got_entry_size (r_type); |
2977 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
2978 | if (!info->h) | |
2979 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 2980 | } |
252b5132 | 2981 | |
a7519a3c RH |
2982 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
2983 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
2984 | info->changed_relocs = TRUE; | |
2985 | ||
2986 | /* ??? Search forward through this basic block looking for insns | |
2987 | that use the target register. Stop after an insn modifying the | |
2988 | register is seen, or after a branch or call. | |
252b5132 | 2989 | |
a7519a3c RH |
2990 | Any such memory load insn may be substituted by a load directly |
2991 | off the GP. This allows the memory load insn to be issued before | |
2992 | the calculated GP register would otherwise be ready. | |
252b5132 | 2993 | |
a7519a3c RH |
2994 | Any such jsr insn can be replaced by a bsr if it is in range. |
2995 | ||
2996 | This would mean that we'd have to _add_ relocations, the pain of | |
2997 | which gives one pause. */ | |
252b5132 | 2998 | |
b34976b6 | 2999 | return TRUE; |
252b5132 RH |
3000 | } |
3001 | ||
a7519a3c RH |
3002 | static bfd_vma |
3003 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3004 | { |
a7519a3c RH |
3005 | /* If the function has the same gp, and we can identify that the |
3006 | function does not use its function pointer, we can eliminate the | |
3007 | address load. */ | |
252b5132 | 3008 | |
a7519a3c RH |
3009 | /* If the symbol is marked NOPV, we are being told the function never |
3010 | needs its procedure value. */ | |
3011 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3012 | return symval; | |
252b5132 | 3013 | |
a7519a3c RH |
3014 | /* If the symbol is marked STD_GP, we are being told the function does |
3015 | a normal ldgp in the first two words. */ | |
3016 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3017 | ; | |
252b5132 | 3018 | |
a7519a3c RH |
3019 | /* Otherwise, we may be able to identify a GP load in the first two |
3020 | words, which we can then skip. */ | |
3021 | else | |
252b5132 | 3022 | { |
a7519a3c RH |
3023 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3024 | bfd_vma ofs; | |
252b5132 | 3025 | |
a7519a3c RH |
3026 | /* Load the relocations from the section that the target symbol is in. */ |
3027 | if (info->sec == info->tsec) | |
252b5132 | 3028 | { |
a7519a3c RH |
3029 | tsec_relocs = info->relocs; |
3030 | tsec_relend = info->relend; | |
3031 | tsec_free = NULL; | |
3032 | } | |
3033 | else | |
3034 | { | |
3035 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3036 | (info->abfd, info->tsec, (PTR) NULL, | |
3037 | (Elf_Internal_Rela *) NULL, | |
3038 | info->link_info->keep_memory)); | |
3039 | if (tsec_relocs == NULL) | |
3040 | return 0; | |
3041 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3042 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3043 | } | |
252b5132 | 3044 | |
a7519a3c RH |
3045 | /* Recover the symbol's offset within the section. */ |
3046 | ofs = (symval - info->tsec->output_section->vma | |
3047 | - info->tsec->output_offset); | |
252b5132 | 3048 | |
a7519a3c RH |
3049 | /* Look for a GPDISP reloc. */ |
3050 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3051 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3052 | |
a7519a3c RH |
3053 | if (!gpdisp || gpdisp->r_addend != 4) |
3054 | { | |
3055 | if (tsec_free) | |
3056 | free (tsec_free); | |
3057 | return 0; | |
252b5132 | 3058 | } |
a7519a3c RH |
3059 | if (tsec_free) |
3060 | free (tsec_free); | |
252b5132 RH |
3061 | } |
3062 | ||
a7519a3c RH |
3063 | /* We've now determined that we can skip an initial gp load. Verify |
3064 | that the call and the target use the same gp. */ | |
3065 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
3066 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
3067 | return 0; | |
252b5132 | 3068 | |
a7519a3c RH |
3069 | return symval + 8; |
3070 | } | |
252b5132 | 3071 | |
a7519a3c RH |
3072 | static bfd_boolean |
3073 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3074 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3075 | { |
a7519a3c RH |
3076 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3077 | int flags, count, i; | |
3078 | bfd_signed_vma disp; | |
3079 | bfd_boolean fits16; | |
3080 | bfd_boolean fits32; | |
3081 | bfd_boolean lit_reused = FALSE; | |
3082 | bfd_boolean all_optimized = TRUE; | |
3083 | unsigned int lit_insn; | |
252b5132 | 3084 | |
a7519a3c RH |
3085 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3086 | if (lit_insn >> 26 != OP_LDQ) | |
3087 | { | |
3088 | ((*_bfd_error_handler) | |
3089 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3090 | info->abfd, info->sec, | |
3091 | (unsigned long) irel->r_offset)); | |
3092 | return TRUE; | |
3093 | } | |
252b5132 | 3094 | |
a7519a3c RH |
3095 | /* Can't relax dynamic symbols. */ |
3096 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3097 | return TRUE; | |
3098 | ||
3099 | /* Summarize how this particular LITERAL is used. */ | |
3100 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3101 | { |
a7519a3c RH |
3102 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3103 | break; | |
8288a39e | 3104 | if (urel->r_addend <= 6) |
a7519a3c RH |
3105 | flags |= 1 << urel->r_addend; |
3106 | } | |
252b5132 | 3107 | |
a7519a3c RH |
3108 | /* A little preparation for the loop... */ |
3109 | disp = symval - info->gp; | |
252b5132 | 3110 | |
a7519a3c RH |
3111 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3112 | { | |
3113 | unsigned int insn; | |
3114 | int insn_disp; | |
3115 | bfd_signed_vma xdisp; | |
252b5132 | 3116 | |
a7519a3c | 3117 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3118 | |
a7519a3c RH |
3119 | switch (urel->r_addend) |
3120 | { | |
3121 | case LITUSE_ALPHA_ADDR: | |
3122 | default: | |
3123 | /* This type is really just a placeholder to note that all | |
3124 | uses cannot be optimized, but to still allow some. */ | |
3125 | all_optimized = FALSE; | |
3126 | break; | |
252b5132 | 3127 | |
a7519a3c RH |
3128 | case LITUSE_ALPHA_BASE: |
3129 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3130 | |
a7519a3c RH |
3131 | /* Extract the displacement from the instruction, sign-extending |
3132 | it if necessary, then test whether it is within 16 or 32 bits | |
3133 | displacement from GP. */ | |
3134 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3135 | ||
3136 | xdisp = disp + insn_disp; | |
3137 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3138 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3139 | && xdisp < 0x7fff8000); | |
3140 | ||
3141 | if (fits16) | |
3142 | { | |
3143 | /* Take the op code and dest from this insn, take the base | |
3144 | register from the literal insn. Leave the offset alone. */ | |
3145 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3146 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3147 | R_ALPHA_GPREL16); | |
3148 | urel->r_addend = irel->r_addend; | |
3149 | info->changed_relocs = TRUE; | |
252b5132 | 3150 | |
a7519a3c RH |
3151 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3152 | info->contents + urel->r_offset); | |
3153 | info->changed_contents = TRUE; | |
252b5132 | 3154 | } |
252b5132 | 3155 | |
a7519a3c RH |
3156 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3157 | else if (fits32 && !(flags & ~6)) | |
3158 | { | |
3159 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3160 | |
a7519a3c RH |
3161 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3162 | R_ALPHA_GPRELHIGH); | |
3163 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3164 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3165 | info->contents + irel->r_offset); | |
3166 | lit_reused = TRUE; | |
3167 | info->changed_contents = TRUE; | |
252b5132 | 3168 | |
a7519a3c RH |
3169 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3170 | R_ALPHA_GPRELLOW); | |
3171 | urel->r_addend = irel->r_addend; | |
3172 | info->changed_relocs = TRUE; | |
3173 | } | |
3174 | else | |
3175 | all_optimized = FALSE; | |
3176 | break; | |
252b5132 | 3177 | |
a7519a3c RH |
3178 | case LITUSE_ALPHA_BYTOFF: |
3179 | /* We can always optimize byte instructions. */ | |
252b5132 | 3180 | |
a7519a3c RH |
3181 | /* FIXME: sanity check the insn for byte op. Check that the |
3182 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3183 | |
a7519a3c RH |
3184 | insn &= ~ (unsigned) 0x001ff000; |
3185 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3186 | |
a7519a3c RH |
3187 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3188 | urel->r_addend = 0; | |
3189 | info->changed_relocs = TRUE; | |
e92d460e | 3190 | |
a7519a3c RH |
3191 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3192 | info->contents + urel->r_offset); | |
3193 | info->changed_contents = TRUE; | |
3194 | break; | |
252b5132 | 3195 | |
a7519a3c RH |
3196 | case LITUSE_ALPHA_JSR: |
3197 | case LITUSE_ALPHA_TLSGD: | |
3198 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3199 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3200 | { |
a7519a3c RH |
3201 | bfd_vma optdest, org; |
3202 | bfd_signed_vma odisp; | |
252b5132 | 3203 | |
a7519a3c RH |
3204 | /* For undefined weak symbols, we're mostly interested in getting |
3205 | rid of the got entry whenever possible, so optimize this to a | |
3206 | use of the zero register. */ | |
3207 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3208 | { | |
3209 | insn |= 31 << 16; | |
3210 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3211 | info->contents + urel->r_offset); | |
252b5132 | 3212 | |
a7519a3c RH |
3213 | info->changed_contents = TRUE; |
3214 | break; | |
3215 | } | |
252b5132 | 3216 | |
a7519a3c RH |
3217 | /* If not zero, place to jump without needing pv. */ |
3218 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3219 | org = (info->sec->output_section->vma | |
3220 | + info->sec->output_offset | |
3221 | + urel->r_offset + 4); | |
3222 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3223 | |
a7519a3c RH |
3224 | if (odisp >= -0x400000 && odisp < 0x400000) |
3225 | { | |
3226 | Elf_Internal_Rela *xrel; | |
252b5132 | 3227 | |
a7519a3c RH |
3228 | /* Preserve branch prediction call stack when possible. */ |
3229 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3230 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3231 | else | |
3232 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3233 | |
a7519a3c RH |
3234 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3235 | R_ALPHA_BRADDR); | |
3236 | urel->r_addend = irel->r_addend; | |
252b5132 | 3237 | |
a7519a3c RH |
3238 | if (optdest) |
3239 | urel->r_addend += optdest - symval; | |
3240 | else | |
3241 | all_optimized = FALSE; | |
252b5132 | 3242 | |
a7519a3c RH |
3243 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3244 | info->contents + urel->r_offset); | |
252b5132 | 3245 | |
a7519a3c RH |
3246 | /* Kill any HINT reloc that might exist for this insn. */ |
3247 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3248 | (info->relocs, info->relend, urel->r_offset, | |
3249 | R_ALPHA_HINT)); | |
3250 | if (xrel) | |
3251 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3252 | |
a7519a3c RH |
3253 | info->changed_contents = TRUE; |
3254 | info->changed_relocs = TRUE; | |
3255 | } | |
3256 | else | |
3257 | all_optimized = FALSE; | |
252b5132 | 3258 | |
a7519a3c RH |
3259 | /* Even if the target is not in range for a direct branch, |
3260 | if we share a GP, we can eliminate the gp reload. */ | |
3261 | if (optdest) | |
3262 | { | |
3263 | Elf_Internal_Rela *gpdisp | |
3264 | = (elf64_alpha_find_reloc_at_ofs | |
3265 | (info->relocs, irelend, urel->r_offset + 4, | |
3266 | R_ALPHA_GPDISP)); | |
3267 | if (gpdisp) | |
3268 | { | |
3269 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3270 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3271 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3272 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3273 | |
a7519a3c RH |
3274 | /* Verify that the instruction is "ldah $29,0($26)". |
3275 | Consider a function that ends in a noreturn call, | |
3276 | and that the next function begins with an ldgp, | |
3277 | and that by accident there is no padding between. | |
3278 | In that case the insn would use $27 as the base. */ | |
3279 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3280 | { | |
3281 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3282 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3283 | |
a7519a3c RH |
3284 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3285 | info->changed_contents = TRUE; | |
3286 | info->changed_relocs = TRUE; | |
3287 | } | |
3288 | } | |
3289 | } | |
3290 | } | |
3291 | break; | |
252b5132 | 3292 | } |
252b5132 RH |
3293 | } |
3294 | ||
a7519a3c RH |
3295 | /* If all cases were optimized, we can reduce the use count on this |
3296 | got entry by one, possibly eliminating it. */ | |
3297 | if (all_optimized) | |
252b5132 | 3298 | { |
a7519a3c | 3299 | if (--info->gotent->use_count == 0) |
252b5132 | 3300 | { |
a7519a3c RH |
3301 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3302 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3303 | if (!info->h) | |
3304 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3305 | } |
a7519a3c RH |
3306 | |
3307 | /* If the literal instruction is no longer needed (it may have been | |
3308 | reused. We can eliminate it. */ | |
3309 | /* ??? For now, I don't want to deal with compacting the section, | |
3310 | so just nop it out. */ | |
3311 | if (!lit_reused) | |
252b5132 | 3312 | { |
a7519a3c RH |
3313 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3314 | info->changed_relocs = TRUE; | |
252b5132 | 3315 | |
a7519a3c RH |
3316 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3317 | info->contents + irel->r_offset); | |
3318 | info->changed_contents = TRUE; | |
3319 | } | |
252b5132 | 3320 | |
a7519a3c RH |
3321 | return TRUE; |
3322 | } | |
3323 | else | |
3324 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3325 | } |
3326 | ||
b34976b6 | 3327 | static bfd_boolean |
a7519a3c RH |
3328 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3329 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3330 | { |
a7519a3c RH |
3331 | bfd_byte *pos[5]; |
3332 | unsigned int insn; | |
3333 | Elf_Internal_Rela *gpdisp, *hint; | |
3334 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3335 | unsigned long new_symndx; | |
f44f99a5 | 3336 | |
a7519a3c | 3337 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3338 | |
a7519a3c RH |
3339 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3340 | to use dynamic model for it. */ | |
3341 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3342 | ; | |
f44f99a5 | 3343 | |
a7519a3c RH |
3344 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3345 | then we might as well relax to IE. */ | |
3346 | else if (info->link_info->shared && !dynamic | |
3347 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3348 | ; | |
f44f99a5 | 3349 | |
a7519a3c RH |
3350 | /* Otherwise we must be building an executable to do anything. */ |
3351 | else if (info->link_info->shared) | |
3352 | return TRUE; | |
f44f99a5 | 3353 | |
a7519a3c RH |
3354 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3355 | the matching LITUSE_TLS relocations. */ | |
3356 | if (irel + 2 >= info->relend) | |
3357 | return TRUE; | |
3358 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3359 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3360 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3361 | return TRUE; | |
f44f99a5 | 3362 | |
a7519a3c RH |
3363 | /* There must be a GPDISP relocation positioned immediately after the |
3364 | LITUSE relocation. */ | |
3365 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3366 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3367 | if (!gpdisp) | |
b34976b6 | 3368 | return TRUE; |
f44f99a5 | 3369 | |
a7519a3c RH |
3370 | pos[0] = info->contents + irel[0].r_offset; |
3371 | pos[1] = info->contents + irel[1].r_offset; | |
3372 | pos[2] = info->contents + irel[2].r_offset; | |
3373 | pos[3] = info->contents + gpdisp->r_offset; | |
3374 | pos[4] = pos[3] + gpdisp->r_addend; | |
3375 | pos1_unusable = FALSE; | |
f44f99a5 | 3376 | |
a7519a3c RH |
3377 | /* Generally, the positions are not allowed to be out of order, lest the |
3378 | modified insn sequence have different register lifetimes. We can make | |
3379 | an exception when pos 1 is adjacent to pos 0. */ | |
3380 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3381 | { |
a7519a3c RH |
3382 | bfd_byte *tmp = pos[0]; |
3383 | pos[0] = pos[1]; | |
3384 | pos[1] = tmp; | |
f44f99a5 | 3385 | } |
a7519a3c RH |
3386 | else if (pos[1] < pos[0]) |
3387 | pos1_unusable = TRUE; | |
3388 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3389 | return TRUE; | |
cc03ec80 | 3390 | |
a7519a3c RH |
3391 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3392 | smash the symndx when we adjust the relocations below. */ | |
3393 | { | |
3394 | struct alpha_elf_got_entry *lit_gotent; | |
3395 | struct alpha_elf_link_hash_entry *lit_h; | |
3396 | unsigned long indx; | |
f44f99a5 | 3397 | |
a7519a3c RH |
3398 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3399 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3400 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3401 | |
a7519a3c RH |
3402 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3403 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3404 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3405 | |
a7519a3c RH |
3406 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3407 | lit_gotent = lit_gotent->next) | |
3408 | if (lit_gotent->gotobj == info->gotobj | |
3409 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3410 | && lit_gotent->addend == irel[1].r_addend) | |
3411 | break; | |
3412 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3413 | |
a7519a3c RH |
3414 | if (--lit_gotent->use_count == 0) |
3415 | { | |
3416 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3417 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3418 | } | |
3419 | } | |
252b5132 | 3420 | |
a7519a3c | 3421 | /* Change |
252b5132 | 3422 | |
a7519a3c RH |
3423 | lda $16,x($gp) !tlsgd!1 |
3424 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3425 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3426 | ldah $29,0($26) !gpdisp!2 | |
3427 | lda $29,0($29) !gpdisp!2 | |
3428 | to | |
3429 | ldq $16,x($gp) !gottprel | |
3430 | unop | |
3431 | call_pal rduniq | |
3432 | addq $16,$0,$0 | |
3433 | unop | |
3434 | or the first pair to | |
3435 | lda $16,x($gp) !tprel | |
3436 | unop | |
3437 | or | |
3438 | ldah $16,x($gp) !tprelhi | |
3439 | lda $16,x($16) !tprello | |
3440 | ||
3441 | as appropriate. */ | |
3442 | ||
3443 | use_gottprel = FALSE; | |
3444 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3445 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3446 | { |
a7519a3c RH |
3447 | case 1: |
3448 | { | |
3449 | bfd_vma tp_base; | |
3450 | bfd_signed_vma disp; | |
252b5132 | 3451 | |
a7519a3c RH |
3452 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3453 | tp_base = alpha_get_tprel_base (info->link_info); | |
3454 | disp = symval - tp_base; | |
252b5132 | 3455 | |
a7519a3c RH |
3456 | if (disp >= -0x8000 && disp < 0x8000) |
3457 | { | |
3458 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3459 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3460 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3461 | |
a7519a3c RH |
3462 | irel[0].r_offset = pos[0] - info->contents; |
3463 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3464 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3465 | break; | |
3466 | } | |
3467 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3468 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3469 | && !pos1_unusable) | |
3470 | { | |
3471 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3472 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3473 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3474 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3475 | |
a7519a3c RH |
3476 | irel[0].r_offset = pos[0] - info->contents; |
3477 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3478 | irel[1].r_offset = pos[1] - info->contents; | |
3479 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3480 | break; | |
3481 | } | |
3482 | } | |
3483 | /* FALLTHRU */ | |
3765b1be | 3484 | |
3765b1be | 3485 | default: |
a7519a3c RH |
3486 | use_gottprel = TRUE; |
3487 | ||
3488 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3489 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3490 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3491 | ||
3492 | irel[0].r_offset = pos[0] - info->contents; | |
3493 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3494 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3495 | break; | |
3765b1be | 3496 | } |
3765b1be | 3497 | |
a7519a3c | 3498 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3499 | |
a7519a3c RH |
3500 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3501 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3502 | |
a7519a3c | 3503 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3504 | |
a7519a3c RH |
3505 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3506 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3507 | |
a7519a3c RH |
3508 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3509 | irel[2].r_offset, R_ALPHA_HINT); | |
3510 | if (hint) | |
3511 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3512 | |
a7519a3c RH |
3513 | info->changed_contents = TRUE; |
3514 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3515 | |
a7519a3c RH |
3516 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3517 | if (--info->gotent->use_count == 0) | |
3765b1be | 3518 | { |
a7519a3c RH |
3519 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3520 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3521 | if (!info->h) | |
3522 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3523 | } |
252b5132 | 3524 | |
a7519a3c RH |
3525 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3526 | count on that got entry. */ | |
3527 | if (use_gottprel) | |
f44f99a5 | 3528 | { |
a7519a3c | 3529 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3530 | |
a7519a3c RH |
3531 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3532 | tprel_gotent = tprel_gotent->next) | |
3533 | if (tprel_gotent->gotobj == info->gotobj | |
3534 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3535 | && tprel_gotent->addend == irel->r_addend) | |
3536 | break; | |
3537 | if (tprel_gotent) | |
3538 | tprel_gotent->use_count++; | |
3539 | else | |
f44f99a5 | 3540 | { |
a7519a3c RH |
3541 | if (info->gotent->use_count == 0) |
3542 | tprel_gotent = info->gotent; | |
3543 | else | |
3544 | { | |
3545 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3546 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3547 | if (!tprel_gotent) | |
3548 | return FALSE; | |
f44f99a5 | 3549 | |
a7519a3c RH |
3550 | tprel_gotent->next = *info->first_gotent; |
3551 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3552 | |
a7519a3c RH |
3553 | tprel_gotent->gotobj = info->gotobj; |
3554 | tprel_gotent->addend = irel->r_addend; | |
3555 | tprel_gotent->got_offset = -1; | |
3556 | tprel_gotent->reloc_done = 0; | |
3557 | tprel_gotent->reloc_xlated = 0; | |
3558 | } | |
f44f99a5 | 3559 | |
a7519a3c RH |
3560 | tprel_gotent->use_count = 1; |
3561 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3562 | } | |
f44f99a5 | 3563 | } |
f44f99a5 | 3564 | |
b34976b6 | 3565 | return TRUE; |
f44f99a5 RH |
3566 | } |
3567 | ||
b34976b6 | 3568 | static bfd_boolean |
a7519a3c RH |
3569 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3570 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3571 | { |
a7519a3c RH |
3572 | Elf_Internal_Shdr *symtab_hdr; |
3573 | Elf_Internal_Rela *internal_relocs; | |
3574 | Elf_Internal_Rela *irel, *irelend; | |
3575 | Elf_Internal_Sym *isymbuf = NULL; | |
3576 | struct alpha_elf_got_entry **local_got_entries; | |
3577 | struct alpha_relax_info info; | |
f44f99a5 | 3578 | |
a7519a3c RH |
3579 | /* We are not currently changing any sizes, so only one pass. */ |
3580 | *again = FALSE; | |
f44f99a5 | 3581 | |
a7519a3c RH |
3582 | if (link_info->relocatable |
3583 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3584 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3585 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3586 | return TRUE; |
3587 | ||
a7519a3c RH |
3588 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3589 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
252b5132 | 3590 | |
a7519a3c RH |
3591 | /* Load the relocations for this section. */ |
3592 | internal_relocs = (_bfd_elf_link_read_relocs | |
3593 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3594 | link_info->keep_memory)); | |
3595 | if (internal_relocs == NULL) | |
3596 | return FALSE; | |
252b5132 | 3597 | |
a7519a3c RH |
3598 | memset(&info, 0, sizeof (info)); |
3599 | info.abfd = abfd; | |
3600 | info.sec = sec; | |
3601 | info.link_info = link_info; | |
3602 | info.symtab_hdr = symtab_hdr; | |
3603 | info.relocs = internal_relocs; | |
3604 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3605 | ||
3606 | /* Find the GP for this object. Do not store the result back via | |
3607 | _bfd_set_gp_value, since this could change again before final. */ | |
3608 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3609 | if (info.gotobj) | |
3765b1be | 3610 | { |
a7519a3c RH |
3611 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3612 | info.gp = (sgot->output_section->vma | |
3613 | + sgot->output_offset | |
3614 | + 0x8000); | |
252b5132 RH |
3615 | } |
3616 | ||
a7519a3c RH |
3617 | /* Get the section contents. */ |
3618 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3619 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3620 | else | |
3621 | { | |
3622 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3623 | goto error_return; | |
3624 | } | |
252b5132 | 3625 | |
a7519a3c RH |
3626 | for (irel = internal_relocs; irel < irelend; irel++) |
3627 | { | |
3628 | bfd_vma symval; | |
3629 | struct alpha_elf_got_entry *gotent; | |
3630 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3631 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3632 | ||
3633 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3634 | switch (r_type) | |
3635 | { | |
3636 | case R_ALPHA_LITERAL: | |
3637 | case R_ALPHA_GPRELHIGH: | |
3638 | case R_ALPHA_GPRELLOW: | |
3639 | case R_ALPHA_GOTDTPREL: | |
3640 | case R_ALPHA_GOTTPREL: | |
3641 | case R_ALPHA_TLSGD: | |
3642 | break; | |
3643 | ||
3644 | case R_ALPHA_TLSLDM: | |
3645 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3646 | reloc to the 0 symbol so that they all match. */ | |
3647 | r_symndx = 0; | |
3648 | break; | |
3649 | ||
3650 | default: | |
3651 | continue; | |
3652 | } | |
3653 | ||
3654 | /* Get the value of the symbol referred to by the reloc. */ | |
3655 | if (r_symndx < symtab_hdr->sh_info) | |
3656 | { | |
3657 | /* A local symbol. */ | |
3658 | Elf_Internal_Sym *isym; | |
3659 | ||
3660 | /* Read this BFD's local symbols. */ | |
3661 | if (isymbuf == NULL) | |
3662 | { | |
3663 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3664 | if (isymbuf == NULL) | |
3665 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3666 | symtab_hdr->sh_info, 0, | |
3667 | NULL, NULL, NULL); | |
3668 | if (isymbuf == NULL) | |
3669 | goto error_return; | |
3670 | } | |
252b5132 | 3671 | |
a7519a3c | 3672 | isym = isymbuf + r_symndx; |
252b5132 | 3673 | |
a7519a3c RH |
3674 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3675 | means forcing the symbol value to the tp base. */ | |
3676 | if (r_type == R_ALPHA_TLSLDM) | |
3677 | { | |
3678 | info.tsec = bfd_abs_section_ptr; | |
3679 | symval = alpha_get_tprel_base (info.link_info); | |
3680 | } | |
3681 | else | |
3682 | { | |
3683 | symval = isym->st_value; | |
3684 | if (isym->st_shndx == SHN_UNDEF) | |
3685 | continue; | |
3686 | else if (isym->st_shndx == SHN_ABS) | |
3687 | info.tsec = bfd_abs_section_ptr; | |
3688 | else if (isym->st_shndx == SHN_COMMON) | |
3689 | info.tsec = bfd_com_section_ptr; | |
3690 | else | |
3691 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3692 | } | |
252b5132 | 3693 | |
a7519a3c RH |
3694 | info.h = NULL; |
3695 | info.other = isym->st_other; | |
3696 | if (local_got_entries) | |
3697 | info.first_gotent = &local_got_entries[r_symndx]; | |
3698 | else | |
3699 | { | |
3700 | info.first_gotent = &info.gotent; | |
3701 | info.gotent = NULL; | |
3702 | } | |
252b5132 | 3703 | } |
a7519a3c RH |
3704 | else |
3705 | { | |
3706 | unsigned long indx; | |
3707 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3708 | |
a7519a3c RH |
3709 | indx = r_symndx - symtab_hdr->sh_info; |
3710 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3711 | BFD_ASSERT (h != NULL); | |
252b5132 | 3712 | |
a7519a3c RH |
3713 | while (h->root.root.type == bfd_link_hash_indirect |
3714 | || h->root.root.type == bfd_link_hash_warning) | |
3715 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3716 | |
a7519a3c RH |
3717 | /* If the symbol is undefined, we can't do anything with it. */ |
3718 | if (h->root.root.type == bfd_link_hash_undefined) | |
3719 | continue; | |
252b5132 | 3720 | |
a7519a3c RH |
3721 | /* If the symbol isn't defined in the current module, |
3722 | again we can't do anything. */ | |
3723 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3724 | { | |
3725 | info.tsec = bfd_abs_section_ptr; | |
3726 | symval = 0; | |
3727 | } | |
3728 | else if (!h->root.def_regular) | |
3729 | { | |
3730 | /* Except for TLSGD relocs, which can sometimes be | |
3731 | relaxed to GOTTPREL relocs. */ | |
3732 | if (r_type != R_ALPHA_TLSGD) | |
3733 | continue; | |
3734 | info.tsec = bfd_abs_section_ptr; | |
3735 | symval = 0; | |
3736 | } | |
3737 | else | |
3738 | { | |
3739 | info.tsec = h->root.root.u.def.section; | |
3740 | symval = h->root.root.u.def.value; | |
3741 | } | |
252b5132 | 3742 | |
a7519a3c RH |
3743 | info.h = h; |
3744 | info.other = h->root.other; | |
3745 | info.first_gotent = &h->got_entries; | |
3746 | } | |
252b5132 | 3747 | |
a7519a3c RH |
3748 | /* Search for the got entry to be used by this relocation. */ |
3749 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3750 | if (gotent->gotobj == info.gotobj | |
3751 | && gotent->reloc_type == r_type | |
3752 | && gotent->addend == irel->r_addend) | |
3753 | break; | |
3754 | info.gotent = gotent; | |
252b5132 | 3755 | |
a7519a3c RH |
3756 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3757 | symval += irel->r_addend; | |
252b5132 | 3758 | |
a7519a3c | 3759 | switch (r_type) |
252b5132 | 3760 | { |
a7519a3c RH |
3761 | case R_ALPHA_LITERAL: |
3762 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3763 | |
a7519a3c RH |
3764 | /* If there exist LITUSE relocations immediately following, this |
3765 | opens up all sorts of interesting optimizations, because we | |
3766 | now know every location that this address load is used. */ | |
3767 | if (irel+1 < irelend | |
3768 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3769 | { |
a7519a3c RH |
3770 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3771 | goto error_return; | |
252b5132 | 3772 | } |
a7519a3c RH |
3773 | else |
3774 | { | |
3775 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3776 | goto error_return; | |
3777 | } | |
3778 | break; | |
252b5132 | 3779 | |
a7519a3c RH |
3780 | case R_ALPHA_GOTDTPREL: |
3781 | case R_ALPHA_GOTTPREL: | |
3782 | BFD_ASSERT(info.gotent != NULL); | |
3783 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3784 | goto error_return; | |
3785 | break; | |
3786 | ||
3787 | case R_ALPHA_TLSGD: | |
3788 | case R_ALPHA_TLSLDM: | |
3789 | BFD_ASSERT(info.gotent != NULL); | |
3790 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3791 | r_type == R_ALPHA_TLSGD)) | |
3792 | goto error_return; | |
3793 | break; | |
252b5132 RH |
3794 | } |
3795 | } | |
3796 | ||
a7519a3c RH |
3797 | if (!elf64_alpha_size_plt_section (link_info)) |
3798 | return FALSE; | |
3799 | if (!elf64_alpha_size_got_sections (link_info)) | |
3800 | return FALSE; | |
3801 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
3802 | return FALSE; | |
dc810e39 | 3803 | |
a7519a3c RH |
3804 | if (isymbuf != NULL |
3805 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3806 | { | |
3807 | if (!link_info->keep_memory) | |
3808 | free (isymbuf); | |
3809 | else | |
252b5132 | 3810 | { |
a7519a3c RH |
3811 | /* Cache the symbols for elf_link_input_bfd. */ |
3812 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3813 | } |
a7519a3c | 3814 | } |
252b5132 | 3815 | |
a7519a3c RH |
3816 | if (info.contents != NULL |
3817 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3818 | { | |
3819 | if (!info.changed_contents && !link_info->keep_memory) | |
3820 | free (info.contents); | |
3821 | else | |
252b5132 | 3822 | { |
a7519a3c RH |
3823 | /* Cache the section contents for elf_link_input_bfd. */ |
3824 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3825 | } |
a7519a3c | 3826 | } |
252b5132 | 3827 | |
a7519a3c RH |
3828 | if (elf_section_data (sec)->relocs != internal_relocs) |
3829 | { | |
3830 | if (!info.changed_relocs) | |
3831 | free (internal_relocs); | |
3832 | else | |
3833 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3834 | } |
a7519a3c RH |
3835 | |
3836 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3837 | |
b34976b6 | 3838 | return TRUE; |
252b5132 | 3839 | |
a7519a3c RH |
3840 | error_return: |
3841 | if (isymbuf != NULL | |
3842 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3843 | free (isymbuf); | |
3844 | if (info.contents != NULL | |
3845 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3846 | free (info.contents); | |
3847 | if (internal_relocs != NULL | |
3848 | && elf_section_data (sec)->relocs != internal_relocs) | |
3849 | free (internal_relocs); | |
3850 | return FALSE; | |
3851 | } | |
3852 | \f | |
1bbc9cec RH |
3853 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3854 | into the next available slot in SREL. */ | |
3855 | ||
3856 | static void | |
a7519a3c RH |
3857 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3858 | asection *sec, asection *srel, bfd_vma offset, | |
3859 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3860 | { |
3861 | Elf_Internal_Rela outrel; | |
3862 | bfd_byte *loc; | |
3863 | ||
3864 | BFD_ASSERT (srel != NULL); | |
3865 | ||
3866 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3867 | outrel.r_addend = addend; | |
3868 | ||
3869 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3870 | if ((offset | 1) != (bfd_vma) -1) | |
3871 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3872 | else | |
3873 | memset (&outrel, 0, sizeof (outrel)); | |
3874 | ||
3875 | loc = srel->contents; | |
3876 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3877 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3878 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3879 | } |
3880 | ||
4a67a098 RH |
3881 | /* Relocate an Alpha ELF section for a relocatable link. |
3882 | ||
3883 | We don't have to change anything unless the reloc is against a section | |
3884 | symbol, in which case we have to adjust according to where the section | |
3885 | symbol winds up in the output section. */ | |
3886 | ||
b34976b6 | 3887 | static bfd_boolean |
a7519a3c RH |
3888 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3889 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3890 | bfd *input_bfd, asection *input_section, | |
3891 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3892 | Elf_Internal_Rela *relocs, | |
3893 | Elf_Internal_Sym *local_syms, | |
3894 | asection **local_sections) | |
4a67a098 RH |
3895 | { |
3896 | unsigned long symtab_hdr_sh_info; | |
3897 | Elf_Internal_Rela *rel; | |
3898 | Elf_Internal_Rela *relend; | |
b34976b6 | 3899 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
3900 | |
3901 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
3902 | ||
3903 | relend = relocs + input_section->reloc_count; | |
3904 | for (rel = relocs; rel < relend; rel++) | |
3905 | { | |
3906 | unsigned long r_symndx; | |
3907 | Elf_Internal_Sym *sym; | |
3908 | asection *sec; | |
3909 | unsigned long r_type; | |
3910 | ||
3911 | r_type = ELF64_R_TYPE(rel->r_info); | |
3912 | if (r_type >= R_ALPHA_max) | |
3913 | { | |
3914 | (*_bfd_error_handler) | |
d003868e AM |
3915 | (_("%B: unknown relocation type %d"), |
3916 | input_bfd, (int) r_type); | |
4a67a098 | 3917 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3918 | ret_val = FALSE; |
4a67a098 RH |
3919 | continue; |
3920 | } | |
3921 | ||
3922 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3923 | ||
3924 | /* The symbol associated with GPDISP and LITUSE is | |
3925 | immaterial. Only the addend is significant. */ | |
3926 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3927 | continue; | |
3928 | ||
3929 | if (r_symndx < symtab_hdr_sh_info) | |
3930 | { | |
3931 | sym = local_syms + r_symndx; | |
3932 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3933 | { | |
3934 | sec = local_sections[r_symndx]; | |
3935 | rel->r_addend += sec->output_offset + sym->st_value; | |
3936 | } | |
3937 | } | |
3938 | } | |
3939 | ||
3940 | return ret_val; | |
3941 | } | |
3942 | ||
252b5132 RH |
3943 | /* Relocate an Alpha ELF section. */ |
3944 | ||
b34976b6 | 3945 | static bfd_boolean |
a7519a3c RH |
3946 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3947 | bfd *input_bfd, asection *input_section, | |
3948 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
3949 | Elf_Internal_Sym *local_syms, | |
3950 | asection **local_sections) | |
252b5132 | 3951 | { |
4a67a098 | 3952 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
3953 | Elf_Internal_Rela *rel; |
3954 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
3955 | asection *sgot, *srel, *srelgot; |
3956 | bfd *dynobj, *gotobj; | |
3957 | bfd_vma gp, tp_base, dtp_base; | |
3958 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 3959 | bfd_boolean ret_val; |
252b5132 | 3960 | |
4a67a098 | 3961 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 3962 | if (info->relocatable) |
4a67a098 RH |
3963 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
3964 | input_section, contents, relocs, | |
3965 | local_syms, local_sections); | |
3966 | ||
3967 | /* This is a final link. */ | |
3968 | ||
b34976b6 | 3969 | ret_val = TRUE; |
252b5132 | 3970 | |
4a67a098 | 3971 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 3972 | |
4a67a098 RH |
3973 | dynobj = elf_hash_table (info)->dynobj; |
3974 | if (dynobj) | |
3975 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3976 | else | |
3977 | srelgot = NULL; | |
3978 | ||
3241278a RH |
3979 | if (input_section->flags & SEC_ALLOC) |
3980 | { | |
3981 | const char *section_name; | |
3982 | section_name = (bfd_elf_string_from_elf_section | |
3983 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
3984 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
3985 | BFD_ASSERT(section_name != NULL); | |
3986 | srel = bfd_get_section_by_name (dynobj, section_name); | |
3987 | } | |
3988 | else | |
3989 | srel = NULL; | |
3765b1be | 3990 | |
4a67a098 RH |
3991 | /* Find the gp value for this input bfd. */ |
3992 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
3993 | if (gotobj) | |
3994 | { | |
3995 | sgot = alpha_elf_tdata (gotobj)->got; | |
3996 | gp = _bfd_get_gp_value (gotobj); | |
3997 | if (gp == 0) | |
252b5132 | 3998 | { |
4a67a098 RH |
3999 | gp = (sgot->output_section->vma |
4000 | + sgot->output_offset | |
4001 | + 0x8000); | |
4002 | _bfd_set_gp_value (gotobj, gp); | |
4003 | } | |
4004 | } | |
4005 | else | |
4006 | { | |
4007 | sgot = NULL; | |
4008 | gp = 0; | |
4009 | } | |
3765b1be | 4010 | |
4a67a098 RH |
4011 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4012 | ||
e1918d23 | 4013 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4014 | { |
e1918d23 AM |
4015 | dtp_base = alpha_get_dtprel_base (info); |
4016 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4017 | } |
4a67a098 RH |
4018 | else |
4019 | dtp_base = tp_base = 0; | |
252b5132 | 4020 | |
252b5132 | 4021 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4022 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4023 | { |
4a67a098 | 4024 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4025 | struct alpha_elf_got_entry *gotent; |
4026 | bfd_reloc_status_type r; | |
252b5132 RH |
4027 | reloc_howto_type *howto; |
4028 | unsigned long r_symndx; | |
4a67a098 RH |
4029 | Elf_Internal_Sym *sym = NULL; |
4030 | asection *sec = NULL; | |
3765b1be | 4031 | bfd_vma value; |
dc810e39 | 4032 | bfd_vma addend; |
b34976b6 AM |
4033 | bfd_boolean dynamic_symbol_p; |
4034 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4035 | unsigned long r_type; |
252b5132 RH |
4036 | |
4037 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4038 | if (r_type >= R_ALPHA_max) |
252b5132 | 4039 | { |
3765b1be | 4040 | (*_bfd_error_handler) |
d003868e AM |
4041 | (_("%B: unknown relocation type %d"), |
4042 | input_bfd, (int) r_type); | |
252b5132 | 4043 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4044 | ret_val = FALSE; |
3765b1be | 4045 | continue; |
252b5132 | 4046 | } |
252b5132 | 4047 | |
3765b1be | 4048 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4049 | r_symndx = ELF64_R_SYM(rel->r_info); |
4050 | ||
cc03ec80 RH |
4051 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4052 | reloc to the 0 symbol so that they all match. */ | |
4053 | if (r_type == R_ALPHA_TLSLDM) | |
4054 | r_symndx = 0; | |
4055 | ||
252b5132 RH |
4056 | if (r_symndx < symtab_hdr->sh_info) |
4057 | { | |
8517fae7 | 4058 | asection *msec; |
252b5132 RH |
4059 | sym = local_syms + r_symndx; |
4060 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4061 | msec = sec; |
4062 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4063 | |
cc03ec80 RH |
4064 | /* If this is a tp-relative relocation against sym 0, |
4065 | this is hackery from relax_section. Force the value to | |
f915360b | 4066 | be the tls module base. */ |
cc03ec80 RH |
4067 | if (r_symndx == 0 |
4068 | && (r_type == R_ALPHA_TLSLDM | |
4069 | || r_type == R_ALPHA_GOTTPREL | |
4070 | || r_type == R_ALPHA_TPREL64 | |
4071 | || r_type == R_ALPHA_TPRELHI | |
4072 | || r_type == R_ALPHA_TPRELLO | |
4073 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4074 | value = dtp_base; |
cc03ec80 | 4075 | |
4a67a098 RH |
4076 | if (local_got_entries) |
4077 | gotent = local_got_entries[r_symndx]; | |
4078 | else | |
4079 | gotent = NULL; | |
3765b1be RH |
4080 | |
4081 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4082 | unless it has been done already. */ | |
4083 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4084 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4085 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4086 | && gotent |
4087 | && !gotent->reloc_xlated) | |
3765b1be RH |
4088 | { |
4089 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4090 | |
4091 | for (ent = gotent; ent; ent = ent->next) | |
4092 | { | |
4093 | ent->reloc_xlated = 1; | |
4094 | if (ent->use_count == 0) | |
4095 | continue; | |
4096 | msec = sec; | |
4097 | ent->addend = | |
4098 | _bfd_merged_section_offset (output_bfd, &msec, | |
4099 | elf_section_data (sec)-> | |
4100 | sec_info, | |
753731ee | 4101 | sym->st_value + ent->addend); |
3765b1be RH |
4102 | ent->addend -= sym->st_value; |
4103 | ent->addend += msec->output_section->vma | |
4104 | + msec->output_offset | |
4105 | - sec->output_section->vma | |
4106 | - sec->output_offset; | |
4107 | } | |
4108 | } | |
4109 | ||
b34976b6 | 4110 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4111 | } |
4112 | else | |
4113 | { | |
560e09e9 NC |
4114 | bfd_boolean warned; |
4115 | bfd_boolean unresolved_reloc; | |
4116 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4117 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4118 | ||
4119 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4120 | r_symndx, symtab_hdr, sym_hashes, | |
4121 | hh, sec, value, | |
4122 | unresolved_reloc, warned); | |
560e09e9 NC |
4123 | |
4124 | if (warned) | |
4125 | continue; | |
252b5132 | 4126 | |
560e09e9 NC |
4127 | if (value == 0 |
4128 | && ! unresolved_reloc | |
4129 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4130 | undef_weak_ref = TRUE; |
3765b1be | 4131 | |
560e09e9 | 4132 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4133 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4134 | gotent = h->got_entries; | |
252b5132 | 4135 | } |
3765b1be | 4136 | |
252b5132 | 4137 | addend = rel->r_addend; |
3765b1be RH |
4138 | value += addend; |
4139 | ||
4140 | /* Search for the proper got entry. */ | |
4141 | for (; gotent ; gotent = gotent->next) | |
4142 | if (gotent->gotobj == gotobj | |
4143 | && gotent->reloc_type == r_type | |
4144 | && gotent->addend == addend) | |
4145 | break; | |
252b5132 RH |
4146 | |
4147 | switch (r_type) | |
4148 | { | |
4149 | case R_ALPHA_GPDISP: | |
4150 | { | |
4151 | bfd_byte *p_ldah, *p_lda; | |
4152 | ||
4153 | BFD_ASSERT(gp != 0); | |
4154 | ||
3765b1be RH |
4155 | value = (input_section->output_section->vma |
4156 | + input_section->output_offset | |
4157 | + rel->r_offset); | |
252b5132 | 4158 | |
3765b1be | 4159 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4160 | p_lda = p_ldah + rel->r_addend; |
4161 | ||
3765b1be | 4162 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4163 | p_ldah, p_lda); |
4164 | } | |
4165 | break; | |
4166 | ||
252b5132 | 4167 | case R_ALPHA_LITERAL: |
3765b1be RH |
4168 | BFD_ASSERT(sgot != NULL); |
4169 | BFD_ASSERT(gp != 0); | |
4170 | BFD_ASSERT(gotent != NULL); | |
4171 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4172 | |
3765b1be RH |
4173 | if (!gotent->reloc_done) |
4174 | { | |
4175 | gotent->reloc_done = 1; | |
252b5132 | 4176 | |
3765b1be RH |
4177 | bfd_put_64 (output_bfd, value, |
4178 | sgot->contents + gotent->got_offset); | |
252b5132 | 4179 | |
3765b1be RH |
4180 | /* If the symbol has been forced local, output a |
4181 | RELATIVE reloc, otherwise it will be handled in | |
4182 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4183 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4184 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4185 | gotent->got_offset, 0, | |
4186 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4187 | } |
252b5132 | 4188 | |
3765b1be RH |
4189 | value = (sgot->output_section->vma |
4190 | + sgot->output_offset | |
4191 | + gotent->got_offset); | |
4192 | value -= gp; | |
252b5132 RH |
4193 | goto default_reloc; |
4194 | ||
4195 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4196 | /* If the target section was a removed linkonce section, |
4197 | r_symndx will be zero. In this case, assume that the | |
4198 | switch will not be used, so don't fill it in. If we | |
4199 | do nothing here, we'll get relocation truncated messages, | |
4200 | due to the placement of the application above 4GB. */ | |
4201 | if (r_symndx == 0) | |
4202 | { | |
4203 | r = bfd_reloc_ok; | |
4204 | break; | |
4205 | } | |
4206 | /* FALLTHRU */ | |
4207 | ||
4208 | case R_ALPHA_GPREL16: | |
252b5132 | 4209 | case R_ALPHA_GPRELLOW: |
3765b1be | 4210 | if (dynamic_symbol_p) |
f16fbd61 RH |
4211 | { |
4212 | (*_bfd_error_handler) | |
d003868e AM |
4213 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4214 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4215 | ret_val = FALSE; |
f16fbd61 | 4216 | } |
252b5132 | 4217 | BFD_ASSERT(gp != 0); |
3765b1be | 4218 | value -= gp; |
252b5132 RH |
4219 | goto default_reloc; |
4220 | ||
4221 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4222 | if (dynamic_symbol_p) |
f16fbd61 RH |
4223 | { |
4224 | (*_bfd_error_handler) | |
d003868e AM |
4225 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4226 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4227 | ret_val = FALSE; |
f16fbd61 | 4228 | } |
252b5132 | 4229 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4230 | value -= gp; |
4231 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4232 | goto default_reloc; |
4233 | ||
252b5132 | 4234 | case R_ALPHA_HINT: |
f94952df RH |
4235 | /* A call to a dynamic symbol is definitely out of range of |
4236 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4237 | if (dynamic_symbol_p) |
f94952df RH |
4238 | { |
4239 | r = bfd_reloc_ok; | |
4240 | break; | |
4241 | } | |
3765b1be RH |
4242 | /* The regular PC-relative stuff measures from the start of |
4243 | the instruction rather than the end. */ | |
4244 | value -= 4; | |
4245 | goto default_reloc; | |
f94952df RH |
4246 | |
4247 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4248 | if (dynamic_symbol_p) |
4249 | { | |
4250 | (*_bfd_error_handler) | |
d003868e AM |
4251 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4252 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4253 | ret_val = FALSE; |
3765b1be | 4254 | } |
252b5132 RH |
4255 | /* The regular PC-relative stuff measures from the start of |
4256 | the instruction rather than the end. */ | |
3765b1be | 4257 | value -= 4; |
252b5132 RH |
4258 | goto default_reloc; |
4259 | ||
7793f4d0 RH |
4260 | case R_ALPHA_BRSGP: |
4261 | { | |
4262 | int other; | |
4263 | const char *name; | |
4264 | ||
4265 | /* The regular PC-relative stuff measures from the start of | |
4266 | the instruction rather than the end. */ | |
3765b1be | 4267 | value -= 4; |
7793f4d0 | 4268 | |
ccf00ab6 RH |
4269 | /* The source and destination gp must be the same. Note that |
4270 | the source will always have an assigned gp, since we forced | |
4271 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4272 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4273 | care not to crash if H is an undefined symbol. */ |
4274 | if (h != NULL && sec != NULL | |
4275 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4276 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4277 | { | |
7793f4d0 | 4278 | (*_bfd_error_handler) |
d003868e AM |
4279 | (_("%B: change in gp: BRSGP %s"), |
4280 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4281 | ret_val = FALSE; |
7793f4d0 RH |
4282 | } |
4283 | ||
4284 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4285 | if (h != NULL) | |
4286 | other = h->root.other; | |
4287 | else | |
4288 | other = sym->st_other; | |
4289 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4290 | { | |
4291 | case STO_ALPHA_NOPV: | |
4292 | break; | |
4293 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4294 | value += 8; |
7793f4d0 RH |
4295 | break; |
4296 | default: | |
4297 | if (h != NULL) | |
4298 | name = h->root.root.root.string; | |
4299 | else | |
4300 | { | |
4301 | name = (bfd_elf_string_from_elf_section | |
4302 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4303 | if (name == NULL) | |
4304 | name = _("<unknown>"); | |
4305 | else if (name[0] == 0) | |
4306 | name = bfd_section_name (input_bfd, sec); | |
4307 | } | |
4308 | (*_bfd_error_handler) | |
d003868e AM |
4309 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4310 | input_bfd, name); | |
b34976b6 | 4311 | ret_val = FALSE; |
7793f4d0 RH |
4312 | break; |
4313 | } | |
4314 | ||
4315 | goto default_reloc; | |
4316 | } | |
4317 | ||
252b5132 RH |
4318 | case R_ALPHA_REFLONG: |
4319 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4320 | case R_ALPHA_DTPREL64: |
4321 | case R_ALPHA_TPREL64: | |
252b5132 | 4322 | { |
1bbc9cec RH |
4323 | long dynindx, dyntype = r_type; |
4324 | bfd_vma dynaddend; | |
252b5132 RH |
4325 | |
4326 | /* Careful here to remember RELATIVE relocations for global | |
4327 | variables for symbolic shared objects. */ | |
4328 | ||
3765b1be | 4329 | if (dynamic_symbol_p) |
252b5132 RH |
4330 | { |
4331 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4332 | dynindx = h->root.dynindx; |
4333 | dynaddend = addend; | |
3765b1be RH |
4334 | addend = 0, value = 0; |
4335 | } | |
4336 | else if (r_type == R_ALPHA_DTPREL64) | |
4337 | { | |
e1918d23 | 4338 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4339 | value -= dtp_base; |
4340 | goto default_reloc; | |
4341 | } | |
4342 | else if (r_type == R_ALPHA_TPREL64) | |
4343 | { | |
e1918d23 | 4344 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4345 | if (!info->shared) |
4346 | { | |
4347 | value -= tp_base; | |
4348 | goto default_reloc; | |
4349 | } | |
4350 | dynindx = 0; | |
4351 | dynaddend = value - dtp_base; | |
252b5132 | 4352 | } |
ec338859 AM |
4353 | else if (info->shared |
4354 | && r_symndx != 0 | |
d6ad34f6 RH |
4355 | && (input_section->flags & SEC_ALLOC) |
4356 | && !undef_weak_ref) | |
252b5132 | 4357 | { |
3765b1be RH |
4358 | if (r_type == R_ALPHA_REFLONG) |
4359 | { | |
4360 | (*_bfd_error_handler) | |
d003868e AM |
4361 | (_("%B: unhandled dynamic relocation against %s"), |
4362 | input_bfd, | |
3765b1be | 4363 | h->root.root.root.string); |
b34976b6 | 4364 | ret_val = FALSE; |
3765b1be | 4365 | } |
1bbc9cec RH |
4366 | dynindx = 0; |
4367 | dyntype = R_ALPHA_RELATIVE; | |
4368 | dynaddend = value; | |
252b5132 RH |
4369 | } |
4370 | else | |
4371 | goto default_reloc; | |
4372 | ||
3241278a RH |
4373 | if (input_section->flags & SEC_ALLOC) |
4374 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4375 | srel, rel->r_offset, dynindx, | |
4376 | dyntype, dynaddend); | |
252b5132 RH |
4377 | } |
4378 | goto default_reloc; | |
4379 | ||
3765b1be | 4380 | case R_ALPHA_SREL16: |
84de6048 RH |
4381 | case R_ALPHA_SREL32: |
4382 | case R_ALPHA_SREL64: | |
3765b1be RH |
4383 | if (dynamic_symbol_p) |
4384 | { | |
4385 | (*_bfd_error_handler) | |
d003868e AM |
4386 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4387 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4388 | ret_val = FALSE; |
3765b1be | 4389 | } |
d6ad34f6 RH |
4390 | else if ((info->shared || info->pie) && undef_weak_ref) |
4391 | { | |
4392 | (*_bfd_error_handler) | |
4393 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4394 | input_bfd, h->root.root.root.string); | |
4395 | ret_val = FALSE; | |
4396 | } | |
4397 | ||
3765b1be | 4398 | |
84de6048 RH |
4399 | /* ??? .eh_frame references to discarded sections will be smashed |
4400 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4401 | NULL to be encoded as 0 in any format, so this works here. */ | |
4402 | if (r_symndx == 0) | |
4403 | howto = (elf64_alpha_howto_table | |
4404 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4405 | goto default_reloc; | |
4406 | ||
3765b1be RH |
4407 | case R_ALPHA_TLSLDM: |
4408 | /* Ignore the symbol for the relocation. The result is always | |
4409 | the current module. */ | |
4410 | dynamic_symbol_p = 0; | |
4411 | /* FALLTHRU */ | |
4412 | ||
4413 | case R_ALPHA_TLSGD: | |
4414 | if (!gotent->reloc_done) | |
4415 | { | |
4416 | gotent->reloc_done = 1; | |
4417 | ||
4418 | /* Note that the module index for the main program is 1. */ | |
4419 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4420 | sgot->contents + gotent->got_offset); | |
4421 | ||
4422 | /* If the symbol has been forced local, output a | |
4423 | DTPMOD64 reloc, otherwise it will be handled in | |
4424 | finish_dynamic_symbol. */ | |
4425 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4426 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4427 | gotent->got_offset, 0, | |
4428 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4429 | |
4430 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4431 | value = 0; | |
4432 | else | |
4433 | { | |
e1918d23 | 4434 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4435 | value -= dtp_base; |
4436 | } | |
4437 | bfd_put_64 (output_bfd, value, | |
4438 | sgot->contents + gotent->got_offset + 8); | |
4439 | } | |
4440 | ||
4441 | value = (sgot->output_section->vma | |
4442 | + sgot->output_offset | |
4443 | + gotent->got_offset); | |
4444 | value -= gp; | |
4445 | goto default_reloc; | |
4446 | ||
4447 | case R_ALPHA_DTPRELHI: | |
4448 | case R_ALPHA_DTPRELLO: | |
4449 | case R_ALPHA_DTPREL16: | |
4450 | if (dynamic_symbol_p) | |
4451 | { | |
4452 | (*_bfd_error_handler) | |
d003868e AM |
4453 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4454 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4455 | ret_val = FALSE; |
3765b1be | 4456 | } |
e1918d23 | 4457 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4458 | value -= dtp_base; |
9e756d64 RH |
4459 | if (r_type == R_ALPHA_DTPRELHI) |
4460 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4461 | goto default_reloc; |
4462 | ||
4463 | case R_ALPHA_TPRELHI: | |
4464 | case R_ALPHA_TPRELLO: | |
4465 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4466 | if (info->shared) |
4467 | { | |
4468 | (*_bfd_error_handler) | |
d003868e AM |
4469 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4470 | input_bfd); | |
b34976b6 | 4471 | ret_val = FALSE; |
9e756d64 RH |
4472 | } |
4473 | else if (dynamic_symbol_p) | |
3765b1be RH |
4474 | { |
4475 | (*_bfd_error_handler) | |
d003868e AM |
4476 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4477 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4478 | ret_val = FALSE; |
3765b1be | 4479 | } |
e1918d23 | 4480 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4481 | value -= tp_base; |
9e756d64 RH |
4482 | if (r_type == R_ALPHA_TPRELHI) |
4483 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4484 | goto default_reloc; |
4485 | ||
4486 | case R_ALPHA_GOTDTPREL: | |
4487 | case R_ALPHA_GOTTPREL: | |
4488 | BFD_ASSERT(sgot != NULL); | |
4489 | BFD_ASSERT(gp != 0); | |
4490 | BFD_ASSERT(gotent != NULL); | |
4491 | BFD_ASSERT(gotent->use_count >= 1); | |
4492 | ||
4493 | if (!gotent->reloc_done) | |
4494 | { | |
4495 | gotent->reloc_done = 1; | |
4496 | ||
4497 | if (dynamic_symbol_p) | |
4498 | value = 0; | |
4499 | else | |
4500 | { | |
e1918d23 | 4501 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4502 | if (r_type == R_ALPHA_GOTDTPREL) |
4503 | value -= dtp_base; | |
4504 | else if (!info->shared) | |
4505 | value -= tp_base; | |
4506 | else | |
4507 | { | |
4508 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4509 | gotent->got_offset, 0, | |
4510 | R_ALPHA_TPREL64, | |
4511 | value - dtp_base); | |
4512 | value = 0; | |
4513 | } | |
3765b1be RH |
4514 | } |
4515 | bfd_put_64 (output_bfd, value, | |
4516 | sgot->contents + gotent->got_offset); | |
4517 | } | |
4518 | ||
4519 | value = (sgot->output_section->vma | |
4520 | + sgot->output_offset | |
4521 | + gotent->got_offset); | |
4522 | value -= gp; | |
4523 | goto default_reloc; | |
4524 | ||
252b5132 RH |
4525 | default: |
4526 | default_reloc: | |
4527 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4528 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4529 | break; |
4530 | } | |
4531 | ||
4532 | switch (r) | |
4533 | { | |
4534 | case bfd_reloc_ok: | |
4535 | break; | |
4536 | ||
4537 | case bfd_reloc_overflow: | |
4538 | { | |
4539 | const char *name; | |
4540 | ||
ed4de5e2 JJ |
4541 | /* Don't warn if the overflow is due to pc relative reloc |
4542 | against discarded section. Section optimization code should | |
4543 | handle it. */ | |
4544 | ||
4545 | if (r_symndx < symtab_hdr->sh_info | |
4546 | && sec != NULL && howto->pc_relative | |
4547 | && elf_discarded_section (sec)) | |
4548 | break; | |
4549 | ||
252b5132 | 4550 | if (h != NULL) |
dfeffb9f | 4551 | name = NULL; |
252b5132 RH |
4552 | else |
4553 | { | |
4554 | name = (bfd_elf_string_from_elf_section | |
4555 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4556 | if (name == NULL) | |
b34976b6 | 4557 | return FALSE; |
252b5132 RH |
4558 | if (*name == '\0') |
4559 | name = bfd_section_name (input_bfd, sec); | |
4560 | } | |
4561 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4562 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4563 | (bfd_vma) 0, input_bfd, input_section, | |
4564 | rel->r_offset))) | |
b34976b6 | 4565 | ret_val = FALSE; |
252b5132 RH |
4566 | } |
4567 | break; | |
4568 | ||
4569 | default: | |
4570 | case bfd_reloc_outofrange: | |
4571 | abort (); | |
4572 | } | |
4573 | } | |
4574 | ||
f16fbd61 | 4575 | return ret_val; |
252b5132 RH |
4576 | } |
4577 | ||
4578 | /* Finish up dynamic symbol handling. We set the contents of various | |
4579 | dynamic sections here. */ | |
4580 | ||
b34976b6 | 4581 | static bfd_boolean |
a7519a3c RH |
4582 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4583 | struct elf_link_hash_entry *h, | |
4584 | Elf_Internal_Sym *sym) | |
252b5132 | 4585 | { |
6ec7057a | 4586 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 RH |
4587 | bfd *dynobj = elf_hash_table(info)->dynobj; |
4588 | ||
6ec7057a | 4589 | if (h->needs_plt) |
252b5132 RH |
4590 | { |
4591 | /* Fill in the .plt entry for this symbol. */ | |
4592 | asection *splt, *sgot, *srel; | |
4593 | Elf_Internal_Rela outrel; | |
947216bf | 4594 | bfd_byte *loc; |
252b5132 RH |
4595 | bfd_vma got_addr, plt_addr; |
4596 | bfd_vma plt_index; | |
4597 | struct alpha_elf_got_entry *gotent; | |
4598 | ||
4599 | BFD_ASSERT (h->dynindx != -1); | |
4600 | ||
252b5132 RH |
4601 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
4602 | BFD_ASSERT (splt != NULL); | |
4603 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4604 | BFD_ASSERT (srel != NULL); | |
252b5132 | 4605 | |
6ec7057a RH |
4606 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4607 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4608 | && gotent->use_count > 0) | |
4609 | { | |
4610 | unsigned int insn; | |
4611 | int disp; | |
252b5132 | 4612 | |
6ec7057a RH |
4613 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4614 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4615 | |
6ec7057a RH |
4616 | BFD_ASSERT (gotent->got_offset != -1); |
4617 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4618 | |
6ec7057a RH |
4619 | got_addr = (sgot->output_section->vma |
4620 | + sgot->output_offset | |
4621 | + gotent->got_offset); | |
4622 | plt_addr = (splt->output_section->vma | |
4623 | + splt->output_offset | |
4624 | + gotent->plt_offset); | |
252b5132 | 4625 | |
6ec7057a | 4626 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4627 | |
6ec7057a RH |
4628 | /* Fill in the entry in the procedure linkage table. */ |
4629 | if (elf64_alpha_use_secureplt) | |
4630 | { | |
4631 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4632 | insn = INSN_AD (INSN_BR, 31, disp); | |
4633 | bfd_put_32 (output_bfd, insn, | |
4634 | splt->contents + gotent->plt_offset); | |
252b5132 | 4635 | |
6ec7057a RH |
4636 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4637 | / NEW_PLT_ENTRY_SIZE); | |
4638 | } | |
4639 | else | |
4640 | { | |
4641 | disp = -(gotent->plt_offset + 4); | |
4642 | insn = INSN_AD (INSN_BR, 28, disp); | |
4643 | bfd_put_32 (output_bfd, insn, | |
4644 | splt->contents + gotent->plt_offset); | |
4645 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4646 | splt->contents + gotent->plt_offset + 4); | |
4647 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4648 | splt->contents + gotent->plt_offset + 8); | |
4649 | ||
4650 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4651 | / OLD_PLT_ENTRY_SIZE); | |
4652 | } | |
252b5132 | 4653 | |
6ec7057a RH |
4654 | /* Fill in the entry in the .rela.plt section. */ |
4655 | outrel.r_offset = got_addr; | |
4656 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4657 | outrel.r_addend = 0; | |
252b5132 | 4658 | |
6ec7057a RH |
4659 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4660 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4661 | |
6ec7057a RH |
4662 | /* Fill in the entry in the .got. */ |
4663 | bfd_put_64 (output_bfd, plt_addr, | |
4664 | sgot->contents + gotent->got_offset); | |
4665 | } | |
252b5132 RH |
4666 | } |
4667 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4668 | { | |
4669 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4670 | asection *srel; | |
252b5132 RH |
4671 | struct alpha_elf_got_entry *gotent; |
4672 | ||
4673 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4674 | BFD_ASSERT (srel != NULL); | |
4675 | ||
252b5132 RH |
4676 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4677 | gotent != NULL; | |
4678 | gotent = gotent->next) | |
4679 | { | |
f44f99a5 | 4680 | asection *sgot; |
1bbc9cec | 4681 | long r_type; |
3765b1be | 4682 | |
f44f99a5 RH |
4683 | if (gotent->use_count == 0) |
4684 | continue; | |
4685 | ||
4686 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4687 | |
4688 | r_type = gotent->reloc_type; | |
4689 | switch (r_type) | |
4690 | { | |
4691 | case R_ALPHA_LITERAL: | |
4692 | r_type = R_ALPHA_GLOB_DAT; | |
4693 | break; | |
4694 | case R_ALPHA_TLSGD: | |
4695 | r_type = R_ALPHA_DTPMOD64; | |
4696 | break; | |
4697 | case R_ALPHA_GOTDTPREL: | |
4698 | r_type = R_ALPHA_DTPREL64; | |
4699 | break; | |
4700 | case R_ALPHA_GOTTPREL: | |
4701 | r_type = R_ALPHA_TPREL64; | |
4702 | break; | |
4703 | case R_ALPHA_TLSLDM: | |
4704 | default: | |
4705 | abort (); | |
4706 | } | |
4707 | ||
1bbc9cec RH |
4708 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4709 | gotent->got_offset, h->dynindx, | |
4710 | r_type, gotent->addend); | |
3765b1be RH |
4711 | |
4712 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4713 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4714 | gotent->got_offset + 8, h->dynindx, | |
4715 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4716 | } |
4717 | } | |
4718 | ||
4719 | /* Mark some specially defined symbols as absolute. */ | |
4720 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 RS |
4721 | || h == elf_hash_table (info)->hgot |
4722 | || h == elf_hash_table (info)->hplt) | |
252b5132 RH |
4723 | sym->st_shndx = SHN_ABS; |
4724 | ||
b34976b6 | 4725 | return TRUE; |
252b5132 RH |
4726 | } |
4727 | ||
4728 | /* Finish up the dynamic sections. */ | |
4729 | ||
b34976b6 | 4730 | static bfd_boolean |
a7519a3c RH |
4731 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4732 | struct bfd_link_info *info) | |
252b5132 RH |
4733 | { |
4734 | bfd *dynobj; | |
4735 | asection *sdyn; | |
4736 | ||
4737 | dynobj = elf_hash_table (info)->dynobj; | |
4738 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4739 | ||
4740 | if (elf_hash_table (info)->dynamic_sections_created) | |
4741 | { | |
6ec7057a | 4742 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4743 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4744 | bfd_vma plt_vma, gotplt_vma; |
252b5132 RH |
4745 | |
4746 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6ec7057a | 4747 | srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
252b5132 RH |
4748 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4749 | ||
6ec7057a RH |
4750 | plt_vma = splt->output_section->vma + splt->output_offset; |
4751 | ||
4752 | gotplt_vma = 0; | |
4753 | if (elf64_alpha_use_secureplt) | |
4754 | { | |
4755 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4756 | BFD_ASSERT (sgotplt != NULL); | |
4757 | if (sgotplt->size > 0) | |
4758 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4759 | } | |
4760 | ||
252b5132 | 4761 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4762 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4763 | for (; dyncon < dynconend; dyncon++) |
4764 | { | |
4765 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4766 | |
4767 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4768 | ||
4769 | switch (dyn.d_tag) | |
4770 | { | |
4771 | case DT_PLTGOT: | |
6ec7057a RH |
4772 | dyn.d_un.d_ptr |
4773 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4774 | break; | |
252b5132 | 4775 | case DT_PLTRELSZ: |
6ec7057a RH |
4776 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
4777 | break; | |
252b5132 | 4778 | case DT_JMPREL: |
6ec7057a RH |
4779 | dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; |
4780 | break; | |
252b5132 RH |
4781 | |
4782 | case DT_RELASZ: | |
4783 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4784 | that RELASZ should not include JMPREL. This is not what | |
4785 | the rest of the BFD does. It is, however, what the | |
4786 | glibc ld.so wants. Do this fixup here until we found | |
4787 | out who is right. */ | |
6ec7057a RH |
4788 | if (srelaplt) |
4789 | dyn.d_un.d_val -= srelaplt->size; | |
252b5132 RH |
4790 | break; |
4791 | } | |
4792 | ||
4793 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4794 | } | |
4795 | ||
6ec7057a | 4796 | /* Initialize the plt header. */ |
eea6121a | 4797 | if (splt->size > 0) |
252b5132 | 4798 | { |
6ec7057a RH |
4799 | unsigned int insn; |
4800 | int ofs; | |
4801 | ||
4802 | if (elf64_alpha_use_secureplt) | |
4803 | { | |
4804 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
4805 | ||
4806 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
4807 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4808 | ||
4809 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
4810 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4811 | ||
4812 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
4813 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4814 | ||
4815 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
4816 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4817 | ||
4818 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
4819 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
4820 | ||
4821 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
4822 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
4823 | ||
4824 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
4825 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
4826 | ||
4827 | insn = INSN_AB (INSN_JMP, 31, 27); | |
4828 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
4829 | ||
4830 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
4831 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
4832 | } | |
4833 | else | |
4834 | { | |
4835 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
4836 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4837 | ||
4838 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
4839 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4840 | ||
4841 | insn = INSN_UNOP; | |
4842 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4843 | ||
4844 | insn = INSN_AB (INSN_JMP, 27, 27); | |
4845 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4846 | ||
4847 | /* The next two words will be filled in by ld.so. */ | |
4848 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
4849 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
4850 | } | |
252b5132 | 4851 | |
eecdbe52 | 4852 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4853 | } |
4854 | } | |
4855 | ||
b34976b6 | 4856 | return TRUE; |
252b5132 RH |
4857 | } |
4858 | ||
96e2734b RH |
4859 | /* We need to use a special link routine to handle the .mdebug section. |
4860 | We need to merge all instances of these sections together, not write | |
4861 | them all out sequentially. */ | |
252b5132 | 4862 | |
b34976b6 | 4863 | static bfd_boolean |
a7519a3c | 4864 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4865 | { |
4866 | asection *o; | |
4867 | struct bfd_link_order *p; | |
96e2734b | 4868 | asection *mdebug_sec; |
252b5132 RH |
4869 | struct ecoff_debug_info debug; |
4870 | const struct ecoff_debug_swap *swap | |
4871 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4872 | HDRR *symhdr = &debug.symbolic_header; | |
4873 | PTR mdebug_handle = NULL; | |
4874 | ||
96e2734b | 4875 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4876 | mdebug_sec = NULL; |
252b5132 RH |
4877 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4878 | { | |
252b5132 RH |
4879 | if (strcmp (o->name, ".mdebug") == 0) |
4880 | { | |
4881 | struct extsym_info einfo; | |
4882 | ||
4883 | /* We have found the .mdebug section in the output file. | |
4884 | Look through all the link_orders comprising it and merge | |
4885 | the information together. */ | |
4886 | symhdr->magic = swap->sym_magic; | |
4887 | /* FIXME: What should the version stamp be? */ | |
4888 | symhdr->vstamp = 0; | |
4889 | symhdr->ilineMax = 0; | |
4890 | symhdr->cbLine = 0; | |
4891 | symhdr->idnMax = 0; | |
4892 | symhdr->ipdMax = 0; | |
4893 | symhdr->isymMax = 0; | |
4894 | symhdr->ioptMax = 0; | |
4895 | symhdr->iauxMax = 0; | |
4896 | symhdr->issMax = 0; | |
4897 | symhdr->issExtMax = 0; | |
4898 | symhdr->ifdMax = 0; | |
4899 | symhdr->crfd = 0; | |
4900 | symhdr->iextMax = 0; | |
4901 | ||
4902 | /* We accumulate the debugging information itself in the | |
4903 | debug_info structure. */ | |
4904 | debug.line = NULL; | |
4905 | debug.external_dnr = NULL; | |
4906 | debug.external_pdr = NULL; | |
4907 | debug.external_sym = NULL; | |
4908 | debug.external_opt = NULL; | |
4909 | debug.external_aux = NULL; | |
4910 | debug.ss = NULL; | |
4911 | debug.ssext = debug.ssext_end = NULL; | |
4912 | debug.external_fdr = NULL; | |
4913 | debug.external_rfd = NULL; | |
4914 | debug.external_ext = debug.external_ext_end = NULL; | |
4915 | ||
4916 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4917 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4918 | return FALSE; |
252b5132 RH |
4919 | |
4920 | if (1) | |
4921 | { | |
4922 | asection *s; | |
4923 | EXTR esym; | |
52b9d213 | 4924 | bfd_vma last = 0; |
252b5132 RH |
4925 | unsigned int i; |
4926 | static const char * const name[] = | |
4927 | { | |
4928 | ".text", ".init", ".fini", ".data", | |
4929 | ".rodata", ".sdata", ".sbss", ".bss" | |
4930 | }; | |
4931 | static const int sc[] = { scText, scInit, scFini, scData, | |
4932 | scRData, scSData, scSBss, scBss }; | |
4933 | ||
4934 | esym.jmptbl = 0; | |
4935 | esym.cobol_main = 0; | |
4936 | esym.weakext = 0; | |
4937 | esym.reserved = 0; | |
4938 | esym.ifd = ifdNil; | |
4939 | esym.asym.iss = issNil; | |
4940 | esym.asym.st = stLocal; | |
4941 | esym.asym.reserved = 0; | |
4942 | esym.asym.index = indexNil; | |
4943 | for (i = 0; i < 8; i++) | |
4944 | { | |
4945 | esym.asym.sc = sc[i]; | |
4946 | s = bfd_get_section_by_name (abfd, name[i]); | |
4947 | if (s != NULL) | |
4948 | { | |
4949 | esym.asym.value = s->vma; | |
eea6121a | 4950 | last = s->vma + s->size; |
252b5132 RH |
4951 | } |
4952 | else | |
4953 | esym.asym.value = last; | |
4954 | ||
4955 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4956 | name[i], &esym)) | |
b34976b6 | 4957 | return FALSE; |
252b5132 RH |
4958 | } |
4959 | } | |
4960 | ||
8423293d | 4961 | for (p = o->map_head.link_order; |
252b5132 RH |
4962 | p != (struct bfd_link_order *) NULL; |
4963 | p = p->next) | |
4964 | { | |
4965 | asection *input_section; | |
4966 | bfd *input_bfd; | |
4967 | const struct ecoff_debug_swap *input_swap; | |
4968 | struct ecoff_debug_info input_debug; | |
4969 | char *eraw_src; | |
4970 | char *eraw_end; | |
4971 | ||
4972 | if (p->type != bfd_indirect_link_order) | |
4973 | { | |
fd96f80f | 4974 | if (p->type == bfd_data_link_order) |
252b5132 RH |
4975 | continue; |
4976 | abort (); | |
4977 | } | |
4978 | ||
4979 | input_section = p->u.indirect.section; | |
4980 | input_bfd = input_section->owner; | |
4981 | ||
4982 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4983 | || (get_elf_backend_data (input_bfd) | |
4984 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4985 | { | |
4986 | /* I don't know what a non ALPHA ELF bfd would be | |
4987 | doing with a .mdebug section, but I don't really | |
4988 | want to deal with it. */ | |
4989 | continue; | |
4990 | } | |
4991 | ||
4992 | input_swap = (get_elf_backend_data (input_bfd) | |
4993 | ->elf_backend_ecoff_debug_swap); | |
4994 | ||
eea6121a | 4995 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
4996 | |
4997 | /* The ECOFF linking code expects that we have already | |
4998 | read in the debugging information and set up an | |
4999 | ecoff_debug_info structure, so we do that now. */ | |
5000 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5001 | &input_debug)) | |
b34976b6 | 5002 | return FALSE; |
252b5132 RH |
5003 | |
5004 | if (! (bfd_ecoff_debug_accumulate | |
5005 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5006 | &input_debug, input_swap, info))) | |
b34976b6 | 5007 | return FALSE; |
252b5132 RH |
5008 | |
5009 | /* Loop through the external symbols. For each one with | |
5010 | interesting information, try to find the symbol in | |
5011 | the linker global hash table and save the information | |
5012 | for the output external symbols. */ | |
5013 | eraw_src = input_debug.external_ext; | |
5014 | eraw_end = (eraw_src | |
5015 | + (input_debug.symbolic_header.iextMax | |
5016 | * input_swap->external_ext_size)); | |
5017 | for (; | |
5018 | eraw_src < eraw_end; | |
5019 | eraw_src += input_swap->external_ext_size) | |
5020 | { | |
5021 | EXTR ext; | |
5022 | const char *name; | |
5023 | struct alpha_elf_link_hash_entry *h; | |
5024 | ||
5025 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5026 | if (ext.asym.sc == scNil | |
5027 | || ext.asym.sc == scUndefined | |
5028 | || ext.asym.sc == scSUndefined) | |
5029 | continue; | |
5030 | ||
5031 | name = input_debug.ssext + ext.asym.iss; | |
5032 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5033 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5034 | if (h == NULL || h->esym.ifd != -2) |
5035 | continue; | |
5036 | ||
5037 | if (ext.ifd != -1) | |
5038 | { | |
5039 | BFD_ASSERT (ext.ifd | |
5040 | < input_debug.symbolic_header.ifdMax); | |
5041 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5042 | } | |
5043 | ||
5044 | h->esym = ext; | |
5045 | } | |
5046 | ||
5047 | /* Free up the information we just read. */ | |
5048 | free (input_debug.line); | |
5049 | free (input_debug.external_dnr); | |
5050 | free (input_debug.external_pdr); | |
5051 | free (input_debug.external_sym); | |
5052 | free (input_debug.external_opt); | |
5053 | free (input_debug.external_aux); | |
5054 | free (input_debug.ss); | |
5055 | free (input_debug.ssext); | |
5056 | free (input_debug.external_fdr); | |
5057 | free (input_debug.external_rfd); | |
5058 | free (input_debug.external_ext); | |
5059 | ||
5060 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5061 | elf_link_input_bfd ignores this section. */ | |
5062 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5063 | } | |
5064 | ||
252b5132 RH |
5065 | /* Build the external symbol information. */ |
5066 | einfo.abfd = abfd; | |
5067 | einfo.info = info; | |
5068 | einfo.debug = &debug; | |
5069 | einfo.swap = swap; | |
b34976b6 | 5070 | einfo.failed = FALSE; |
252b5132 RH |
5071 | elf_link_hash_traverse (elf_hash_table (info), |
5072 | elf64_alpha_output_extsym, | |
5073 | (PTR) &einfo); | |
5074 | if (einfo.failed) | |
b34976b6 | 5075 | return FALSE; |
252b5132 RH |
5076 | |
5077 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5078 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5079 | |
5080 | /* Skip this section later on (I don't think this currently | |
5081 | matters, but someday it might). */ | |
8423293d | 5082 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5083 | |
5084 | mdebug_sec = o; | |
5085 | } | |
252b5132 RH |
5086 | } |
5087 | ||
5088 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5089 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5090 | return FALSE; |
252b5132 RH |
5091 | |
5092 | /* Now write out the computed sections. */ | |
5093 | ||
5094 | /* The .got subsections... */ | |
5095 | { | |
5096 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5097 | for (i = alpha_elf_hash_table(info)->got_list; | |
5098 | i != NULL; | |
5099 | i = alpha_elf_tdata(i)->got_link_next) | |
5100 | { | |
5101 | asection *sgot; | |
5102 | ||
5103 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5104 | if (i == dynobj) | |
5105 | continue; | |
5106 | ||
5107 | sgot = alpha_elf_tdata(i)->got; | |
5108 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5109 | sgot->contents, |
5110 | (file_ptr) sgot->output_offset, | |
eea6121a | 5111 | sgot->size)) |
b34976b6 | 5112 | return FALSE; |
252b5132 RH |
5113 | } |
5114 | } | |
5115 | ||
252b5132 RH |
5116 | if (mdebug_sec != (asection *) NULL) |
5117 | { | |
5118 | BFD_ASSERT (abfd->output_has_begun); | |
5119 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5120 | swap, info, | |
5121 | mdebug_sec->filepos)) | |
b34976b6 | 5122 | return FALSE; |
252b5132 RH |
5123 | |
5124 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5125 | } | |
5126 | ||
b34976b6 | 5127 | return TRUE; |
252b5132 | 5128 | } |
fcfbdf31 JJ |
5129 | |
5130 | static enum elf_reloc_type_class | |
a7519a3c | 5131 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5132 | { |
f51e552e | 5133 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5134 | { |
5135 | case R_ALPHA_RELATIVE: | |
5136 | return reloc_class_relative; | |
5137 | case R_ALPHA_JMP_SLOT: | |
5138 | return reloc_class_plt; | |
5139 | case R_ALPHA_COPY: | |
5140 | return reloc_class_copy; | |
5141 | default: | |
5142 | return reloc_class_normal; | |
5143 | } | |
5144 | } | |
252b5132 | 5145 | \f |
b35d266b | 5146 | static const struct bfd_elf_special_section elf64_alpha_special_sections[] = |
2f89ff8d | 5147 | { |
7dcb9820 | 5148 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
551b43fd | 5149 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
7dcb9820 | 5150 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
5151 | }; |
5152 | ||
252b5132 RH |
5153 | /* ECOFF swapping routines. These are used when dealing with the |
5154 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5155 | from elf32-mips.c. */ |
252b5132 RH |
5156 | static const struct ecoff_debug_swap |
5157 | elf64_alpha_ecoff_debug_swap = | |
5158 | { | |
5159 | /* Symbol table magic number. */ | |
5160 | magicSym2, | |
5161 | /* Alignment of debugging information. E.g., 4. */ | |
5162 | 8, | |
5163 | /* Sizes of external symbolic information. */ | |
5164 | sizeof (struct hdr_ext), | |
5165 | sizeof (struct dnr_ext), | |
5166 | sizeof (struct pdr_ext), | |
5167 | sizeof (struct sym_ext), | |
5168 | sizeof (struct opt_ext), | |
5169 | sizeof (struct fdr_ext), | |
5170 | sizeof (struct rfd_ext), | |
5171 | sizeof (struct ext_ext), | |
5172 | /* Functions to swap in external symbolic data. */ | |
5173 | ecoff_swap_hdr_in, | |
5174 | ecoff_swap_dnr_in, | |
5175 | ecoff_swap_pdr_in, | |
5176 | ecoff_swap_sym_in, | |
5177 | ecoff_swap_opt_in, | |
5178 | ecoff_swap_fdr_in, | |
5179 | ecoff_swap_rfd_in, | |
5180 | ecoff_swap_ext_in, | |
5181 | _bfd_ecoff_swap_tir_in, | |
5182 | _bfd_ecoff_swap_rndx_in, | |
5183 | /* Functions to swap out external symbolic data. */ | |
5184 | ecoff_swap_hdr_out, | |
5185 | ecoff_swap_dnr_out, | |
5186 | ecoff_swap_pdr_out, | |
5187 | ecoff_swap_sym_out, | |
5188 | ecoff_swap_opt_out, | |
5189 | ecoff_swap_fdr_out, | |
5190 | ecoff_swap_rfd_out, | |
5191 | ecoff_swap_ext_out, | |
5192 | _bfd_ecoff_swap_tir_out, | |
5193 | _bfd_ecoff_swap_rndx_out, | |
5194 | /* Function to read in symbolic data. */ | |
5195 | elf64_alpha_read_ecoff_info | |
5196 | }; | |
5197 | \f | |
70bcb145 JW |
5198 | /* Use a non-standard hash bucket size of 8. */ |
5199 | ||
562ace6b | 5200 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5201 | { |
5202 | sizeof (Elf64_External_Ehdr), | |
5203 | sizeof (Elf64_External_Phdr), | |
5204 | sizeof (Elf64_External_Shdr), | |
5205 | sizeof (Elf64_External_Rel), | |
5206 | sizeof (Elf64_External_Rela), | |
5207 | sizeof (Elf64_External_Sym), | |
5208 | sizeof (Elf64_External_Dyn), | |
5209 | sizeof (Elf_External_Note), | |
5210 | 8, | |
5211 | 1, | |
45d6a902 | 5212 | 64, 3, |
70bcb145 JW |
5213 | ELFCLASS64, EV_CURRENT, |
5214 | bfd_elf64_write_out_phdrs, | |
5215 | bfd_elf64_write_shdrs_and_ehdr, | |
5216 | bfd_elf64_write_relocs, | |
73ff0d56 | 5217 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5218 | bfd_elf64_swap_symbol_out, |
5219 | bfd_elf64_slurp_reloc_table, | |
5220 | bfd_elf64_slurp_symbol_table, | |
5221 | bfd_elf64_swap_dyn_in, | |
5222 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5223 | bfd_elf64_swap_reloc_in, |
5224 | bfd_elf64_swap_reloc_out, | |
5225 | bfd_elf64_swap_reloca_in, | |
5226 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5227 | }; |
5228 | ||
252b5132 RH |
5229 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5230 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5231 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5232 | #define ELF_MACHINE_CODE EM_ALPHA |
5233 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5234 | |
5235 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5236 | elf64_alpha_bfd_link_hash_table_create | |
5237 | ||
5238 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5239 | elf64_alpha_bfd_reloc_type_lookup | |
5240 | #define elf_info_to_howto \ | |
5241 | elf64_alpha_info_to_howto | |
5242 | ||
5243 | #define bfd_elf64_mkobject \ | |
5244 | elf64_alpha_mkobject | |
5245 | #define elf_backend_object_p \ | |
5246 | elf64_alpha_object_p | |
5247 | ||
5248 | #define elf_backend_section_from_shdr \ | |
5249 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5250 | #define elf_backend_section_flags \ |
5251 | elf64_alpha_section_flags | |
252b5132 RH |
5252 | #define elf_backend_fake_sections \ |
5253 | elf64_alpha_fake_sections | |
5254 | ||
5255 | #define bfd_elf64_bfd_is_local_label_name \ | |
5256 | elf64_alpha_is_local_label_name | |
5257 | #define bfd_elf64_find_nearest_line \ | |
5258 | elf64_alpha_find_nearest_line | |
5259 | #define bfd_elf64_bfd_relax_section \ | |
5260 | elf64_alpha_relax_section | |
5261 | ||
5262 | #define elf_backend_add_symbol_hook \ | |
5263 | elf64_alpha_add_symbol_hook | |
5264 | #define elf_backend_check_relocs \ | |
5265 | elf64_alpha_check_relocs | |
5266 | #define elf_backend_create_dynamic_sections \ | |
5267 | elf64_alpha_create_dynamic_sections | |
5268 | #define elf_backend_adjust_dynamic_symbol \ | |
5269 | elf64_alpha_adjust_dynamic_symbol | |
5270 | #define elf_backend_always_size_sections \ | |
5271 | elf64_alpha_always_size_sections | |
5272 | #define elf_backend_size_dynamic_sections \ | |
5273 | elf64_alpha_size_dynamic_sections | |
5274 | #define elf_backend_relocate_section \ | |
5275 | elf64_alpha_relocate_section | |
5276 | #define elf_backend_finish_dynamic_symbol \ | |
5277 | elf64_alpha_finish_dynamic_symbol | |
5278 | #define elf_backend_finish_dynamic_sections \ | |
5279 | elf64_alpha_finish_dynamic_sections | |
5280 | #define bfd_elf64_bfd_final_link \ | |
5281 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5282 | #define elf_backend_reloc_type_class \ |
5283 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5284 | |
5285 | #define elf_backend_ecoff_debug_swap \ | |
5286 | &elf64_alpha_ecoff_debug_swap | |
5287 | ||
70bcb145 JW |
5288 | #define elf_backend_size_info \ |
5289 | alpha_elf_size_info | |
5290 | ||
29ef7005 L |
5291 | #define elf_backend_special_sections \ |
5292 | elf64_alpha_special_sections | |
2f89ff8d | 5293 | |
38b1a46c | 5294 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5295 | #define elf_backend_want_got_plt 0 |
5296 | #define elf_backend_plt_readonly 0 | |
5297 | #define elf_backend_want_plt_sym 1 | |
5298 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5299 | |
5300 | #include "elf64-target.h" | |
2238051f RH |
5301 | \f |
5302 | /* FreeBSD support. */ | |
5303 | ||
5304 | #undef TARGET_LITTLE_SYM | |
5305 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5306 | #undef TARGET_LITTLE_NAME | |
5307 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5308 | ||
5309 | /* The kernel recognizes executables as valid only if they carry a | |
5310 | "FreeBSD" label in the ELF header. So we put this label on all | |
5311 | executables and (for simplicity) also all other object files. */ | |
5312 | ||
2238051f | 5313 | static void |
a7519a3c RH |
5314 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5315 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5316 | { |
5317 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5318 | ||
5319 | i_ehdrp = elf_elfheader (abfd); | |
5320 | ||
5321 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5322 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5323 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5324 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5325 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5326 | #endif | |
5327 | } | |
5328 | ||
5329 | #undef elf_backend_post_process_headers | |
5330 | #define elf_backend_post_process_headers \ | |
5331 | elf64_alpha_fbsd_post_process_headers | |
5332 | ||
571fe01f | 5333 | #undef elf64_bed |
2238051f RH |
5334 | #define elf64_bed elf64_alpha_fbsd_bed |
5335 | ||
5336 | #include "elf64-target.h" |