Commit | Line | Data |
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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
77cfaee6 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
21 | |
22 | /* We need a published ABI spec for this. Until one comes out, don't | |
23 | assume this'll remain unchanged forever. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | ||
30 | #include "elf/alpha.h" | |
31 | ||
32 | #define ALPHAECOFF | |
33 | ||
34 | #define NO_COFF_RELOCS | |
35 | #define NO_COFF_SYMBOLS | |
36 | #define NO_COFF_LINENOS | |
37 | ||
fe8bc63d | 38 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
39 | #include "coff/internal.h" |
40 | #include "coff/sym.h" | |
41 | #include "coff/symconst.h" | |
42 | #include "coff/ecoff.h" | |
43 | #include "coff/alpha.h" | |
44 | #include "aout/ar.h" | |
45 | #include "libcoff.h" | |
46 | #include "libecoff.h" | |
47 | #define ECOFF_64 | |
48 | #include "ecoffswap.h" | |
49 | ||
252b5132 RH |
50 | \f |
51 | struct alpha_elf_link_hash_entry | |
52 | { | |
53 | struct elf_link_hash_entry root; | |
54 | ||
55 | /* External symbol information. */ | |
56 | EXTR esym; | |
57 | ||
58 | /* Cumulative flags for all the .got entries. */ | |
59 | int flags; | |
60 | ||
9e756d64 | 61 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
62 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
63 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
64 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
65 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
66 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
67 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
68 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 69 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
cc03ec80 RH |
70 | #define ALPHA_ELF_LINK_HASH_PLT_LOC 0x80 |
71 | ||
72 | /* Used to undo the localization of a plt symbol. */ | |
73 | asection *plt_old_section; | |
74 | bfd_vma plt_old_value; | |
252b5132 RH |
75 | |
76 | /* Used to implement multiple .got subsections. */ | |
77 | struct alpha_elf_got_entry | |
78 | { | |
79 | struct alpha_elf_got_entry *next; | |
80 | ||
571fe01f | 81 | /* Which .got subsection? */ |
252b5132 RH |
82 | bfd *gotobj; |
83 | ||
571fe01f | 84 | /* The addend in effect for this entry. */ |
dc810e39 | 85 | bfd_vma addend; |
252b5132 | 86 | |
571fe01f | 87 | /* The .got offset for this entry. */ |
252b5132 RH |
88 | int got_offset; |
89 | ||
3765b1be RH |
90 | /* How many references to this entry? */ |
91 | int use_count; | |
252b5132 | 92 | |
3765b1be RH |
93 | /* The relocation type of this entry. */ |
94 | unsigned char reloc_type; | |
252b5132 | 95 | |
3765b1be RH |
96 | /* How a LITERAL is used. */ |
97 | unsigned char flags; | |
98 | ||
99 | /* Have we initialized the dynamic relocation for this entry? */ | |
100 | unsigned char reloc_done; | |
101 | ||
102 | /* Have we adjusted this entry for SEC_MERGE? */ | |
103 | unsigned char reloc_xlated; | |
252b5132 RH |
104 | } *got_entries; |
105 | ||
571fe01f | 106 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
107 | of relocation sections. */ |
108 | struct alpha_elf_reloc_entry | |
109 | { | |
110 | struct alpha_elf_reloc_entry *next; | |
111 | ||
571fe01f | 112 | /* Which .reloc section? */ |
252b5132 RH |
113 | asection *srel; |
114 | ||
571fe01f | 115 | /* What kind of relocation? */ |
fcfbdf31 JJ |
116 | unsigned int rtype; |
117 | ||
571fe01f | 118 | /* Is this against read-only section? */ |
fcfbdf31 | 119 | unsigned int reltext : 1; |
252b5132 | 120 | |
571fe01f | 121 | /* How many did we find? */ |
252b5132 RH |
122 | unsigned long count; |
123 | } *reloc_entries; | |
124 | }; | |
125 | ||
126 | /* Alpha ELF linker hash table. */ | |
127 | ||
128 | struct alpha_elf_link_hash_table | |
129 | { | |
130 | struct elf_link_hash_table root; | |
131 | ||
132 | /* The head of a list of .got subsections linked through | |
133 | alpha_elf_tdata(abfd)->got_link_next. */ | |
134 | bfd *got_list; | |
135 | }; | |
136 | ||
137 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
138 | ||
139 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
140 | ((struct alpha_elf_link_hash_entry *) \ | |
141 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
142 | (copy), (follow))) | |
143 | ||
144 | /* Traverse a Alpha ELF linker hash table. */ | |
145 | ||
146 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
147 | (elf_link_hash_traverse \ | |
148 | (&(table)->root, \ | |
a7519a3c | 149 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
252b5132 RH |
150 | (info))) |
151 | ||
152 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
153 | ||
154 | #define alpha_elf_hash_table(p) \ | |
155 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
156 | ||
157 | /* Get the object's symbols as our own entry type. */ | |
158 | ||
159 | #define alpha_elf_sym_hashes(abfd) \ | |
160 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
161 | ||
986a241f RH |
162 | /* Should we do dynamic things to this symbol? This differs from the |
163 | generic version in that we never need to consider function pointer | |
164 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
165 | address is ever taken. */ | |
252b5132 | 166 | |
986a241f | 167 | static inline bfd_boolean |
a7519a3c RH |
168 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
169 | struct bfd_link_info *info) | |
8fb35fed | 170 | { |
986a241f | 171 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 172 | } |
252b5132 RH |
173 | |
174 | /* Create an entry in a Alpha ELF linker hash table. */ | |
175 | ||
176 | static struct bfd_hash_entry * | |
a7519a3c RH |
177 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
178 | struct bfd_hash_table *table, | |
179 | const char *string) | |
252b5132 RH |
180 | { |
181 | struct alpha_elf_link_hash_entry *ret = | |
182 | (struct alpha_elf_link_hash_entry *) entry; | |
183 | ||
184 | /* Allocate the structure if it has not already been allocated by a | |
185 | subclass. */ | |
186 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
187 | ret = ((struct alpha_elf_link_hash_entry *) | |
188 | bfd_hash_allocate (table, | |
189 | sizeof (struct alpha_elf_link_hash_entry))); | |
190 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
191 | return (struct bfd_hash_entry *) ret; | |
192 | ||
193 | /* Call the allocation method of the superclass. */ | |
194 | ret = ((struct alpha_elf_link_hash_entry *) | |
195 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
196 | table, string)); | |
197 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
198 | { | |
199 | /* Set local fields. */ | |
200 | memset (&ret->esym, 0, sizeof (EXTR)); | |
201 | /* We use -2 as a marker to indicate that the information has | |
202 | not been set. -1 means there is no associated ifd. */ | |
203 | ret->esym.ifd = -2; | |
204 | ret->flags = 0; | |
205 | ret->got_entries = NULL; | |
206 | ret->reloc_entries = NULL; | |
207 | } | |
208 | ||
209 | return (struct bfd_hash_entry *) ret; | |
210 | } | |
211 | ||
212 | /* Create a Alpha ELF linker hash table. */ | |
213 | ||
214 | static struct bfd_link_hash_table * | |
a7519a3c | 215 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
216 | { |
217 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 218 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 219 | |
e2d34d7d | 220 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
221 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
222 | return NULL; | |
223 | ||
224 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
225 | elf64_alpha_link_hash_newfunc)) | |
226 | { | |
e2d34d7d | 227 | free (ret); |
252b5132 RH |
228 | return NULL; |
229 | } | |
230 | ||
231 | return &ret->root.root; | |
232 | } | |
233 | \f | |
234 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
235 | ||
236 | struct alpha_elf_obj_tdata | |
237 | { | |
238 | struct elf_obj_tdata root; | |
239 | ||
240 | /* For every input file, these are the got entries for that object's | |
241 | local symbols. */ | |
242 | struct alpha_elf_got_entry ** local_got_entries; | |
243 | ||
244 | /* For every input file, this is the object that owns the got that | |
245 | this input file uses. */ | |
246 | bfd *gotobj; | |
247 | ||
248 | /* For every got, this is a linked list through the objects using this got */ | |
249 | bfd *in_got_link_next; | |
250 | ||
251 | /* For every got, this is a link to the next got subsegment. */ | |
252 | bfd *got_link_next; | |
253 | ||
254 | /* For every got, this is the section. */ | |
255 | asection *got; | |
256 | ||
3765b1be RH |
257 | /* For every got, this is it's total number of words. */ |
258 | int total_got_size; | |
252b5132 | 259 | |
3765b1be | 260 | /* For every got, this is the sum of the number of words required |
252b5132 | 261 | to hold all of the member object's local got. */ |
3765b1be | 262 | int local_got_size; |
252b5132 RH |
263 | }; |
264 | ||
265 | #define alpha_elf_tdata(abfd) \ | |
266 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
267 | ||
b34976b6 | 268 | static bfd_boolean |
a7519a3c | 269 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 270 | { |
dc810e39 AM |
271 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
272 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 273 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
274 | return FALSE; |
275 | return TRUE; | |
252b5132 RH |
276 | } |
277 | ||
b34976b6 | 278 | static bfd_boolean |
a7519a3c | 279 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 280 | { |
252b5132 RH |
281 | /* Set the right machine number for an Alpha ELF file. */ |
282 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
283 | } | |
284 | \f | |
a7519a3c RH |
285 | /* A relocation function which doesn't do anything. */ |
286 | ||
287 | static bfd_reloc_status_type | |
288 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
289 | asymbol *sym ATTRIBUTE_UNUSED, | |
290 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
291 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
292 | { | |
293 | if (output_bfd) | |
294 | reloc->address += sec->output_offset; | |
295 | return bfd_reloc_ok; | |
296 | } | |
297 | ||
298 | /* A relocation function used for an unsupported reloc. */ | |
299 | ||
300 | static bfd_reloc_status_type | |
301 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
302 | asymbol *sym ATTRIBUTE_UNUSED, | |
303 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
304 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
305 | { | |
306 | if (output_bfd) | |
307 | reloc->address += sec->output_offset; | |
308 | return bfd_reloc_notsupported; | |
309 | } | |
310 | ||
311 | /* Do the work of the GPDISP relocation. */ | |
312 | ||
313 | static bfd_reloc_status_type | |
314 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
315 | bfd_byte *p_lda) | |
316 | { | |
317 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
318 | bfd_vma addend; | |
319 | unsigned long i_ldah, i_lda; | |
320 | ||
321 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
322 | i_lda = bfd_get_32 (abfd, p_lda); | |
323 | ||
324 | /* Complain if the instructions are not correct. */ | |
325 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
326 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
327 | ret = bfd_reloc_dangerous; | |
328 | ||
329 | /* Extract the user-supplied offset, mirroring the sign extensions | |
330 | that the instructions perform. */ | |
331 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
332 | addend = (addend ^ 0x80008000) - 0x80008000; | |
333 | ||
334 | gpdisp += addend; | |
335 | ||
336 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
337 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
338 | ret = bfd_reloc_overflow; | |
339 | ||
340 | /* compensate for the sign extension again. */ | |
341 | i_ldah = ((i_ldah & 0xffff0000) | |
342 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
343 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
344 | ||
345 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
346 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | /* The special function for the GPDISP reloc. */ | |
352 | ||
353 | static bfd_reloc_status_type | |
354 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
355 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
356 | asection *input_section, bfd *output_bfd, | |
357 | char **err_msg) | |
358 | { | |
359 | bfd_reloc_status_type ret; | |
360 | bfd_vma gp, relocation; | |
361 | bfd_vma high_address; | |
362 | bfd_byte *p_ldah, *p_lda; | |
363 | ||
364 | /* Don't do anything if we're not doing a final link. */ | |
365 | if (output_bfd) | |
366 | { | |
367 | reloc_entry->address += input_section->output_offset; | |
368 | return bfd_reloc_ok; | |
369 | } | |
370 | ||
371 | high_address = bfd_get_section_limit (abfd, input_section); | |
372 | if (reloc_entry->address > high_address | |
373 | || reloc_entry->address + reloc_entry->addend > high_address) | |
374 | return bfd_reloc_outofrange; | |
375 | ||
376 | /* The gp used in the portion of the output object to which this | |
377 | input object belongs is cached on the input bfd. */ | |
378 | gp = _bfd_get_gp_value (abfd); | |
379 | ||
380 | relocation = (input_section->output_section->vma | |
381 | + input_section->output_offset | |
382 | + reloc_entry->address); | |
383 | ||
384 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
385 | p_lda = p_ldah + reloc_entry->addend; | |
386 | ||
387 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
388 | ||
389 | /* Complain if the instructions are not correct. */ | |
390 | if (ret == bfd_reloc_dangerous) | |
391 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
392 | ||
393 | return ret; | |
394 | } | |
395 | ||
252b5132 RH |
396 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
397 | from smaller values. Start with zero, widen, *then* decrement. */ | |
398 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
399 | ||
dfe57ca0 RH |
400 | #define SKIP_HOWTO(N) \ |
401 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
402 | ||
252b5132 RH |
403 | static reloc_howto_type elf64_alpha_howto_table[] = |
404 | { | |
405 | HOWTO (R_ALPHA_NONE, /* type */ | |
406 | 0, /* rightshift */ | |
407 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
408 | 8, /* bitsize */ | |
b34976b6 | 409 | TRUE, /* pc_relative */ |
252b5132 RH |
410 | 0, /* bitpos */ |
411 | complain_overflow_dont, /* complain_on_overflow */ | |
412 | elf64_alpha_reloc_nil, /* special_function */ | |
413 | "NONE", /* name */ | |
b34976b6 | 414 | FALSE, /* partial_inplace */ |
252b5132 RH |
415 | 0, /* src_mask */ |
416 | 0, /* dst_mask */ | |
b34976b6 | 417 | TRUE), /* pcrel_offset */ |
252b5132 RH |
418 | |
419 | /* A 32 bit reference to a symbol. */ | |
420 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 32, /* bitsize */ | |
b34976b6 | 424 | FALSE, /* pc_relative */ |
252b5132 RH |
425 | 0, /* bitpos */ |
426 | complain_overflow_bitfield, /* complain_on_overflow */ | |
427 | 0, /* special_function */ | |
428 | "REFLONG", /* name */ | |
b34976b6 | 429 | FALSE, /* partial_inplace */ |
252b5132 RH |
430 | 0xffffffff, /* src_mask */ |
431 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 432 | FALSE), /* pcrel_offset */ |
252b5132 RH |
433 | |
434 | /* A 64 bit reference to a symbol. */ | |
435 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 64, /* bitsize */ | |
b34976b6 | 439 | FALSE, /* pc_relative */ |
252b5132 RH |
440 | 0, /* bitpos */ |
441 | complain_overflow_bitfield, /* complain_on_overflow */ | |
442 | 0, /* special_function */ | |
443 | "REFQUAD", /* name */ | |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
252b5132 RH |
445 | MINUS_ONE, /* src_mask */ |
446 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 447 | FALSE), /* pcrel_offset */ |
252b5132 RH |
448 | |
449 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
450 | that when the value is used the value of the gp register will be | |
451 | added in. */ | |
452 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
453 | 0, /* rightshift */ | |
454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
455 | 32, /* bitsize */ | |
b34976b6 | 456 | FALSE, /* pc_relative */ |
252b5132 RH |
457 | 0, /* bitpos */ |
458 | complain_overflow_bitfield, /* complain_on_overflow */ | |
459 | 0, /* special_function */ | |
460 | "GPREL32", /* name */ | |
b34976b6 | 461 | FALSE, /* partial_inplace */ |
252b5132 RH |
462 | 0xffffffff, /* src_mask */ |
463 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 464 | FALSE), /* pcrel_offset */ |
252b5132 RH |
465 | |
466 | /* Used for an instruction that refers to memory off the GP register. */ | |
467 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
468 | 0, /* rightshift */ | |
dfe57ca0 | 469 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 470 | 16, /* bitsize */ |
b34976b6 | 471 | FALSE, /* pc_relative */ |
252b5132 RH |
472 | 0, /* bitpos */ |
473 | complain_overflow_signed, /* complain_on_overflow */ | |
474 | 0, /* special_function */ | |
475 | "ELF_LITERAL", /* name */ | |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
252b5132 RH |
477 | 0xffff, /* src_mask */ |
478 | 0xffff, /* dst_mask */ | |
b34976b6 | 479 | FALSE), /* pcrel_offset */ |
252b5132 RH |
480 | |
481 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
482 | It identifies a use of the literal. The symbol index is special: | |
483 | 1 means the literal address is in the base register of a memory | |
484 | format instruction; 2 means the literal address is in the byte | |
485 | offset register of a byte-manipulation instruction; 3 means the | |
486 | literal address is in the target register of a jsr instruction. | |
487 | This does not actually do any relocation. */ | |
488 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
489 | 0, /* rightshift */ | |
dfe57ca0 | 490 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 491 | 32, /* bitsize */ |
b34976b6 | 492 | FALSE, /* pc_relative */ |
252b5132 RH |
493 | 0, /* bitpos */ |
494 | complain_overflow_dont, /* complain_on_overflow */ | |
495 | elf64_alpha_reloc_nil, /* special_function */ | |
496 | "LITUSE", /* name */ | |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
252b5132 RH |
498 | 0, /* src_mask */ |
499 | 0, /* dst_mask */ | |
b34976b6 | 500 | FALSE), /* pcrel_offset */ |
252b5132 RH |
501 | |
502 | /* Load the gp register. This is always used for a ldah instruction | |
503 | which loads the upper 16 bits of the gp register. The symbol | |
504 | index of the GPDISP instruction is an offset in bytes to the lda | |
505 | instruction that loads the lower 16 bits. The value to use for | |
506 | the relocation is the difference between the GP value and the | |
507 | current location; the load will always be done against a register | |
508 | holding the current address. | |
509 | ||
510 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
511 | any offset is present in the instructions, it is an offset from | |
512 | the register to the ldah instruction. This lets us avoid any | |
513 | stupid hackery like inventing a gp value to do partial relocation | |
514 | against. Also unlike ECOFF, we do the whole relocation off of | |
515 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
516 | space consuming bit, that, since all the information was present | |
517 | in the GPDISP_HI16 reloc. */ | |
518 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
519 | 16, /* rightshift */ | |
520 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 16, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
252b5132 RH |
523 | 0, /* bitpos */ |
524 | complain_overflow_dont, /* complain_on_overflow */ | |
525 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
526 | "GPDISP", /* name */ | |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
252b5132 RH |
528 | 0xffff, /* src_mask */ |
529 | 0xffff, /* dst_mask */ | |
b34976b6 | 530 | TRUE), /* pcrel_offset */ |
252b5132 RH |
531 | |
532 | /* A 21 bit branch. */ | |
533 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
534 | 2, /* rightshift */ | |
535 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
536 | 21, /* bitsize */ | |
b34976b6 | 537 | TRUE, /* pc_relative */ |
252b5132 RH |
538 | 0, /* bitpos */ |
539 | complain_overflow_signed, /* complain_on_overflow */ | |
540 | 0, /* special_function */ | |
541 | "BRADDR", /* name */ | |
b34976b6 | 542 | FALSE, /* partial_inplace */ |
252b5132 RH |
543 | 0x1fffff, /* src_mask */ |
544 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 545 | TRUE), /* pcrel_offset */ |
252b5132 RH |
546 | |
547 | /* A hint for a jump to a register. */ | |
548 | HOWTO (R_ALPHA_HINT, /* type */ | |
549 | 2, /* rightshift */ | |
dfe57ca0 | 550 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 551 | 14, /* bitsize */ |
b34976b6 | 552 | TRUE, /* pc_relative */ |
252b5132 RH |
553 | 0, /* bitpos */ |
554 | complain_overflow_dont, /* complain_on_overflow */ | |
555 | 0, /* special_function */ | |
556 | "HINT", /* name */ | |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
252b5132 RH |
558 | 0x3fff, /* src_mask */ |
559 | 0x3fff, /* dst_mask */ | |
b34976b6 | 560 | TRUE), /* pcrel_offset */ |
252b5132 RH |
561 | |
562 | /* 16 bit PC relative offset. */ | |
563 | HOWTO (R_ALPHA_SREL16, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 16, /* bitsize */ | |
b34976b6 | 567 | TRUE, /* pc_relative */ |
252b5132 RH |
568 | 0, /* bitpos */ |
569 | complain_overflow_signed, /* complain_on_overflow */ | |
570 | 0, /* special_function */ | |
571 | "SREL16", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
252b5132 RH |
573 | 0xffff, /* src_mask */ |
574 | 0xffff, /* dst_mask */ | |
b34976b6 | 575 | TRUE), /* pcrel_offset */ |
252b5132 RH |
576 | |
577 | /* 32 bit PC relative offset. */ | |
578 | HOWTO (R_ALPHA_SREL32, /* type */ | |
579 | 0, /* rightshift */ | |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 32, /* bitsize */ | |
b34976b6 | 582 | TRUE, /* pc_relative */ |
252b5132 RH |
583 | 0, /* bitpos */ |
584 | complain_overflow_signed, /* complain_on_overflow */ | |
585 | 0, /* special_function */ | |
586 | "SREL32", /* name */ | |
b34976b6 | 587 | FALSE, /* partial_inplace */ |
252b5132 RH |
588 | 0xffffffff, /* src_mask */ |
589 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 590 | TRUE), /* pcrel_offset */ |
252b5132 RH |
591 | |
592 | /* A 64 bit PC relative offset. */ | |
593 | HOWTO (R_ALPHA_SREL64, /* type */ | |
594 | 0, /* rightshift */ | |
595 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 64, /* bitsize */ | |
b34976b6 | 597 | TRUE, /* pc_relative */ |
252b5132 RH |
598 | 0, /* bitpos */ |
599 | complain_overflow_signed, /* complain_on_overflow */ | |
600 | 0, /* special_function */ | |
601 | "SREL64", /* name */ | |
b34976b6 | 602 | FALSE, /* partial_inplace */ |
252b5132 RH |
603 | MINUS_ONE, /* src_mask */ |
604 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 605 | TRUE), /* pcrel_offset */ |
252b5132 | 606 | |
dfe57ca0 RH |
607 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
608 | SKIP_HOWTO (12), | |
609 | SKIP_HOWTO (13), | |
610 | SKIP_HOWTO (14), | |
611 | SKIP_HOWTO (15), | |
612 | SKIP_HOWTO (16), | |
252b5132 RH |
613 | |
614 | /* The high 16 bits of the displacement from GP to the target. */ | |
615 | HOWTO (R_ALPHA_GPRELHIGH, | |
616 | 0, /* rightshift */ | |
dfe57ca0 | 617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 618 | 16, /* bitsize */ |
b34976b6 | 619 | FALSE, /* pc_relative */ |
252b5132 RH |
620 | 0, /* bitpos */ |
621 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 622 | 0, /* special_function */ |
252b5132 | 623 | "GPRELHIGH", /* name */ |
b34976b6 | 624 | FALSE, /* partial_inplace */ |
252b5132 RH |
625 | 0xffff, /* src_mask */ |
626 | 0xffff, /* dst_mask */ | |
b34976b6 | 627 | FALSE), /* pcrel_offset */ |
252b5132 RH |
628 | |
629 | /* The low 16 bits of the displacement from GP to the target. */ | |
630 | HOWTO (R_ALPHA_GPRELLOW, | |
631 | 0, /* rightshift */ | |
dfe57ca0 | 632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 633 | 16, /* bitsize */ |
b34976b6 | 634 | FALSE, /* pc_relative */ |
252b5132 RH |
635 | 0, /* bitpos */ |
636 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 637 | 0, /* special_function */ |
252b5132 | 638 | "GPRELLOW", /* name */ |
b34976b6 | 639 | FALSE, /* partial_inplace */ |
252b5132 RH |
640 | 0xffff, /* src_mask */ |
641 | 0xffff, /* dst_mask */ | |
b34976b6 | 642 | FALSE), /* pcrel_offset */ |
252b5132 RH |
643 | |
644 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 645 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 646 | 0, /* rightshift */ |
dfe57ca0 | 647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 648 | 16, /* bitsize */ |
b34976b6 | 649 | FALSE, /* pc_relative */ |
252b5132 RH |
650 | 0, /* bitpos */ |
651 | complain_overflow_signed, /* complain_on_overflow */ | |
652 | 0, /* special_function */ | |
dfe57ca0 | 653 | "GPREL16", /* name */ |
b34976b6 | 654 | FALSE, /* partial_inplace */ |
252b5132 RH |
655 | 0xffff, /* src_mask */ |
656 | 0xffff, /* dst_mask */ | |
b34976b6 | 657 | FALSE), /* pcrel_offset */ |
252b5132 | 658 | |
dfe57ca0 RH |
659 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
660 | SKIP_HOWTO (20), | |
661 | SKIP_HOWTO (21), | |
662 | SKIP_HOWTO (22), | |
663 | SKIP_HOWTO (23), | |
252b5132 | 664 | |
fe8bc63d | 665 | /* Misc ELF relocations. */ |
252b5132 RH |
666 | |
667 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
668 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
669 | is present because every other ELF has one, but should not be used | |
670 | because .dynbss is an ugly thing. */ | |
671 | HOWTO (R_ALPHA_COPY, | |
672 | 0, | |
673 | 0, | |
674 | 0, | |
b34976b6 | 675 | FALSE, |
252b5132 RH |
676 | 0, |
677 | complain_overflow_dont, | |
678 | bfd_elf_generic_reloc, | |
679 | "COPY", | |
b34976b6 | 680 | FALSE, |
252b5132 RH |
681 | 0, |
682 | 0, | |
b34976b6 | 683 | TRUE), |
252b5132 RH |
684 | |
685 | /* A dynamic relocation for a .got entry. */ | |
686 | HOWTO (R_ALPHA_GLOB_DAT, | |
687 | 0, | |
688 | 0, | |
689 | 0, | |
b34976b6 | 690 | FALSE, |
252b5132 RH |
691 | 0, |
692 | complain_overflow_dont, | |
693 | bfd_elf_generic_reloc, | |
694 | "GLOB_DAT", | |
b34976b6 | 695 | FALSE, |
252b5132 RH |
696 | 0, |
697 | 0, | |
b34976b6 | 698 | TRUE), |
252b5132 RH |
699 | |
700 | /* A dynamic relocation for a .plt entry. */ | |
701 | HOWTO (R_ALPHA_JMP_SLOT, | |
702 | 0, | |
703 | 0, | |
704 | 0, | |
b34976b6 | 705 | FALSE, |
252b5132 RH |
706 | 0, |
707 | complain_overflow_dont, | |
708 | bfd_elf_generic_reloc, | |
709 | "JMP_SLOT", | |
b34976b6 | 710 | FALSE, |
252b5132 RH |
711 | 0, |
712 | 0, | |
b34976b6 | 713 | TRUE), |
252b5132 RH |
714 | |
715 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
716 | HOWTO (R_ALPHA_RELATIVE, | |
717 | 0, | |
718 | 0, | |
719 | 0, | |
b34976b6 | 720 | FALSE, |
252b5132 RH |
721 | 0, |
722 | complain_overflow_dont, | |
723 | bfd_elf_generic_reloc, | |
724 | "RELATIVE", | |
b34976b6 | 725 | FALSE, |
252b5132 RH |
726 | 0, |
727 | 0, | |
b34976b6 | 728 | TRUE), |
7793f4d0 RH |
729 | |
730 | /* A 21 bit branch that adjusts for gp loads. */ | |
731 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
732 | 2, /* rightshift */ | |
733 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
734 | 21, /* bitsize */ | |
b34976b6 | 735 | TRUE, /* pc_relative */ |
7793f4d0 RH |
736 | 0, /* bitpos */ |
737 | complain_overflow_signed, /* complain_on_overflow */ | |
738 | 0, /* special_function */ | |
739 | "BRSGP", /* name */ | |
b34976b6 | 740 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
741 | 0x1fffff, /* src_mask */ |
742 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 743 | TRUE), /* pcrel_offset */ |
3765b1be RH |
744 | |
745 | /* Creates a tls_index for the symbol in the got. */ | |
746 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
747 | 0, /* rightshift */ | |
748 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
749 | 16, /* bitsize */ | |
b34976b6 | 750 | FALSE, /* pc_relative */ |
3765b1be RH |
751 | 0, /* bitpos */ |
752 | complain_overflow_signed, /* complain_on_overflow */ | |
753 | 0, /* special_function */ | |
754 | "TLSGD", /* name */ | |
b34976b6 | 755 | FALSE, /* partial_inplace */ |
3765b1be RH |
756 | 0xffff, /* src_mask */ |
757 | 0xffff, /* dst_mask */ | |
b34976b6 | 758 | FALSE), /* pcrel_offset */ |
3765b1be RH |
759 | |
760 | /* Creates a tls_index for the (current) module in the got. */ | |
761 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
762 | 0, /* rightshift */ | |
763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
764 | 16, /* bitsize */ | |
b34976b6 | 765 | FALSE, /* pc_relative */ |
3765b1be RH |
766 | 0, /* bitpos */ |
767 | complain_overflow_signed, /* complain_on_overflow */ | |
768 | 0, /* special_function */ | |
769 | "TLSLDM", /* name */ | |
b34976b6 | 770 | FALSE, /* partial_inplace */ |
3765b1be RH |
771 | 0xffff, /* src_mask */ |
772 | 0xffff, /* dst_mask */ | |
b34976b6 | 773 | FALSE), /* pcrel_offset */ |
3765b1be RH |
774 | |
775 | /* A dynamic relocation for a DTP module entry. */ | |
776 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
777 | 0, /* rightshift */ | |
778 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
779 | 64, /* bitsize */ | |
b34976b6 | 780 | FALSE, /* pc_relative */ |
3765b1be RH |
781 | 0, /* bitpos */ |
782 | complain_overflow_bitfield, /* complain_on_overflow */ | |
783 | 0, /* special_function */ | |
784 | "DTPMOD64", /* name */ | |
b34976b6 | 785 | FALSE, /* partial_inplace */ |
3765b1be RH |
786 | MINUS_ONE, /* src_mask */ |
787 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 788 | FALSE), /* pcrel_offset */ |
3765b1be RH |
789 | |
790 | /* Creates a 64-bit offset in the got for the displacement | |
791 | from DTP to the target. */ | |
792 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
793 | 0, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
b34976b6 | 796 | FALSE, /* pc_relative */ |
3765b1be RH |
797 | 0, /* bitpos */ |
798 | complain_overflow_signed, /* complain_on_overflow */ | |
799 | 0, /* special_function */ | |
800 | "GOTDTPREL", /* name */ | |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
3765b1be RH |
802 | 0xffff, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
b34976b6 | 804 | FALSE), /* pcrel_offset */ |
3765b1be RH |
805 | |
806 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
807 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
808 | 0, /* rightshift */ | |
809 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 64, /* bitsize */ | |
b34976b6 | 811 | FALSE, /* pc_relative */ |
3765b1be RH |
812 | 0, /* bitpos */ |
813 | complain_overflow_bitfield, /* complain_on_overflow */ | |
814 | 0, /* special_function */ | |
815 | "DTPREL64", /* name */ | |
b34976b6 | 816 | FALSE, /* partial_inplace */ |
3765b1be RH |
817 | MINUS_ONE, /* src_mask */ |
818 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 819 | FALSE), /* pcrel_offset */ |
3765b1be RH |
820 | |
821 | /* The high 16 bits of the displacement from DTP to the target. */ | |
822 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
823 | 0, /* rightshift */ | |
824 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 16, /* bitsize */ | |
b34976b6 | 826 | FALSE, /* pc_relative */ |
3765b1be RH |
827 | 0, /* bitpos */ |
828 | complain_overflow_signed, /* complain_on_overflow */ | |
829 | 0, /* special_function */ | |
830 | "DTPRELHI", /* name */ | |
b34976b6 | 831 | FALSE, /* partial_inplace */ |
3765b1be RH |
832 | 0xffff, /* src_mask */ |
833 | 0xffff, /* dst_mask */ | |
b34976b6 | 834 | FALSE), /* pcrel_offset */ |
3765b1be RH |
835 | |
836 | /* The low 16 bits of the displacement from DTP to the target. */ | |
837 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
838 | 0, /* rightshift */ | |
839 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 16, /* bitsize */ | |
b34976b6 | 841 | FALSE, /* pc_relative */ |
3765b1be RH |
842 | 0, /* bitpos */ |
843 | complain_overflow_dont, /* complain_on_overflow */ | |
844 | 0, /* special_function */ | |
845 | "DTPRELLO", /* name */ | |
b34976b6 | 846 | FALSE, /* partial_inplace */ |
3765b1be RH |
847 | 0xffff, /* src_mask */ |
848 | 0xffff, /* dst_mask */ | |
b34976b6 | 849 | FALSE), /* pcrel_offset */ |
3765b1be RH |
850 | |
851 | /* A 16-bit displacement from DTP to the target. */ | |
852 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
853 | 0, /* rightshift */ | |
854 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
855 | 16, /* bitsize */ | |
b34976b6 | 856 | FALSE, /* pc_relative */ |
3765b1be RH |
857 | 0, /* bitpos */ |
858 | complain_overflow_signed, /* complain_on_overflow */ | |
859 | 0, /* special_function */ | |
860 | "DTPREL16", /* name */ | |
b34976b6 | 861 | FALSE, /* partial_inplace */ |
3765b1be RH |
862 | 0xffff, /* src_mask */ |
863 | 0xffff, /* dst_mask */ | |
b34976b6 | 864 | FALSE), /* pcrel_offset */ |
3765b1be RH |
865 | |
866 | /* Creates a 64-bit offset in the got for the displacement | |
867 | from TP to the target. */ | |
868 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
869 | 0, /* rightshift */ | |
870 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
871 | 16, /* bitsize */ | |
b34976b6 | 872 | FALSE, /* pc_relative */ |
3765b1be RH |
873 | 0, /* bitpos */ |
874 | complain_overflow_signed, /* complain_on_overflow */ | |
875 | 0, /* special_function */ | |
876 | "GOTTPREL", /* name */ | |
b34976b6 | 877 | FALSE, /* partial_inplace */ |
3765b1be RH |
878 | 0xffff, /* src_mask */ |
879 | 0xffff, /* dst_mask */ | |
b34976b6 | 880 | FALSE), /* pcrel_offset */ |
3765b1be RH |
881 | |
882 | /* A dynamic relocation for a displacement from TP to the target. */ | |
883 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
884 | 0, /* rightshift */ | |
885 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
886 | 64, /* bitsize */ | |
b34976b6 | 887 | FALSE, /* pc_relative */ |
3765b1be RH |
888 | 0, /* bitpos */ |
889 | complain_overflow_bitfield, /* complain_on_overflow */ | |
890 | 0, /* special_function */ | |
891 | "TPREL64", /* name */ | |
b34976b6 | 892 | FALSE, /* partial_inplace */ |
3765b1be RH |
893 | MINUS_ONE, /* src_mask */ |
894 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 895 | FALSE), /* pcrel_offset */ |
3765b1be RH |
896 | |
897 | /* The high 16 bits of the displacement from TP to the target. */ | |
898 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
899 | 0, /* rightshift */ | |
900 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
901 | 16, /* bitsize */ | |
b34976b6 | 902 | FALSE, /* pc_relative */ |
3765b1be RH |
903 | 0, /* bitpos */ |
904 | complain_overflow_signed, /* complain_on_overflow */ | |
905 | 0, /* special_function */ | |
906 | "TPRELHI", /* name */ | |
b34976b6 | 907 | FALSE, /* partial_inplace */ |
3765b1be RH |
908 | 0xffff, /* src_mask */ |
909 | 0xffff, /* dst_mask */ | |
b34976b6 | 910 | FALSE), /* pcrel_offset */ |
3765b1be RH |
911 | |
912 | /* The low 16 bits of the displacement from TP to the target. */ | |
913 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
914 | 0, /* rightshift */ | |
915 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
916 | 16, /* bitsize */ | |
b34976b6 | 917 | FALSE, /* pc_relative */ |
3765b1be RH |
918 | 0, /* bitpos */ |
919 | complain_overflow_dont, /* complain_on_overflow */ | |
920 | 0, /* special_function */ | |
921 | "TPRELLO", /* name */ | |
b34976b6 | 922 | FALSE, /* partial_inplace */ |
3765b1be RH |
923 | 0xffff, /* src_mask */ |
924 | 0xffff, /* dst_mask */ | |
b34976b6 | 925 | FALSE), /* pcrel_offset */ |
3765b1be RH |
926 | |
927 | /* A 16-bit displacement from TP to the target. */ | |
928 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
929 | 0, /* rightshift */ | |
930 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
931 | 16, /* bitsize */ | |
b34976b6 | 932 | FALSE, /* pc_relative */ |
3765b1be RH |
933 | 0, /* bitpos */ |
934 | complain_overflow_signed, /* complain_on_overflow */ | |
935 | 0, /* special_function */ | |
936 | "TPREL16", /* name */ | |
b34976b6 | 937 | FALSE, /* partial_inplace */ |
3765b1be RH |
938 | 0xffff, /* src_mask */ |
939 | 0xffff, /* dst_mask */ | |
b34976b6 | 940 | FALSE), /* pcrel_offset */ |
252b5132 RH |
941 | }; |
942 | ||
252b5132 RH |
943 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
944 | ||
945 | struct elf_reloc_map | |
946 | { | |
947 | bfd_reloc_code_real_type bfd_reloc_val; | |
948 | int elf_reloc_val; | |
949 | }; | |
950 | ||
951 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
952 | { | |
dfe57ca0 RH |
953 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
954 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
955 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
956 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
957 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
958 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
959 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
960 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
961 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
962 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
963 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
964 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
965 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
966 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
967 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
968 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 969 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
970 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
971 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
972 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
973 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
974 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
975 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
976 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
977 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
978 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
979 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
980 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
981 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
982 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
983 | }; |
984 | ||
985 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
986 | ||
987 | static reloc_howto_type * | |
a7519a3c RH |
988 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
989 | bfd_reloc_code_real_type code) | |
252b5132 RH |
990 | { |
991 | const struct elf_reloc_map *i, *e; | |
992 | i = e = elf64_alpha_reloc_map; | |
993 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
994 | for (; i != e; ++i) | |
995 | { | |
996 | if (i->bfd_reloc_val == code) | |
997 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
998 | } | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1003 | ||
1004 | static void | |
a7519a3c RH |
1005 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1006 | Elf_Internal_Rela *dst) | |
252b5132 | 1007 | { |
a7519a3c | 1008 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1009 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1010 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1011 | } | |
3765b1be RH |
1012 | |
1013 | /* These two relocations create a two-word entry in the got. */ | |
1014 | #define alpha_got_entry_size(r_type) \ | |
1015 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1016 | |
1017 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1018 | #define alpha_get_dtprel_base(info) \ |
1019 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1020 | |
1021 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1022 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1023 | #define alpha_get_tprel_base(info) \ |
1024 | (elf_hash_table (info)->tls_sec->vma \ | |
1025 | - align_power ((bfd_vma) 16, \ | |
1026 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1027 | \f |
a7519a3c RH |
1028 | /* PLT/GOT Stuff */ |
1029 | #define PLT_HEADER_SIZE 32 | |
1030 | #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */ | |
1031 | #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */ | |
1032 | #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */ | |
1033 | #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */ | |
252b5132 | 1034 | |
a7519a3c RH |
1035 | #define PLT_ENTRY_SIZE 12 |
1036 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
1037 | #define PLT_ENTRY_WORD2 0 | |
1038 | #define PLT_ENTRY_WORD3 0 | |
252b5132 | 1039 | |
a7519a3c | 1040 | #define MAX_GOT_SIZE (64*1024) |
252b5132 | 1041 | |
a7519a3c RH |
1042 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" |
1043 | \f | |
1044 | /* Handle an Alpha specific section when reading an object file. This | |
1045 | is called when bfd_section_from_shdr finds a section with an unknown | |
1046 | type. | |
1047 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1048 | how to. */ | |
252b5132 | 1049 | |
a7519a3c RH |
1050 | static bfd_boolean |
1051 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1052 | Elf_Internal_Shdr *hdr, | |
1053 | const char *name, | |
1054 | int shindex) | |
252b5132 | 1055 | { |
a7519a3c RH |
1056 | asection *newsect; |
1057 | ||
1058 | /* There ought to be a place to keep ELF backend specific flags, but | |
1059 | at the moment there isn't one. We just keep track of the | |
1060 | sections by their name, instead. Fortunately, the ABI gives | |
1061 | suggested names for all the MIPS specific sections, so we will | |
1062 | probably get away with this. */ | |
1063 | switch (hdr->sh_type) | |
1064 | { | |
1065 | case SHT_ALPHA_DEBUG: | |
1066 | if (strcmp (name, ".mdebug") != 0) | |
1067 | return FALSE; | |
1068 | break; | |
1069 | default: | |
1070 | return FALSE; | |
1071 | } | |
252b5132 | 1072 | |
a7519a3c RH |
1073 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1074 | return FALSE; | |
1075 | newsect = hdr->bfd_section; | |
252b5132 | 1076 | |
a7519a3c | 1077 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1078 | { |
a7519a3c RH |
1079 | if (! bfd_set_section_flags (abfd, newsect, |
1080 | (bfd_get_section_flags (abfd, newsect) | |
1081 | | SEC_DEBUGGING))) | |
1082 | return FALSE; | |
252b5132 | 1083 | } |
a7519a3c RH |
1084 | |
1085 | return TRUE; | |
252b5132 RH |
1086 | } |
1087 | ||
a7519a3c RH |
1088 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1089 | ||
b34976b6 | 1090 | static bfd_boolean |
a7519a3c | 1091 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1092 | { |
a7519a3c RH |
1093 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1094 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1095 | |
a7519a3c RH |
1096 | return TRUE; |
1097 | } | |
252b5132 | 1098 | |
a7519a3c RH |
1099 | /* Set the correct type for an Alpha ELF section. We do this by the |
1100 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1101 | |
a7519a3c RH |
1102 | static bfd_boolean |
1103 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1104 | { | |
1105 | register const char *name; | |
1106 | ||
1107 | name = bfd_get_section_name (abfd, sec); | |
1108 | ||
1109 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1110 | { |
a7519a3c RH |
1111 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1112 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1113 | entsize of 0. FIXME: Does this matter? */ | |
1114 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1115 | hdr->sh_entsize = 0; | |
1116 | else | |
1117 | hdr->sh_entsize = 1; | |
252b5132 | 1118 | } |
a7519a3c RH |
1119 | else if ((sec->flags & SEC_SMALL_DATA) |
1120 | || strcmp (name, ".sdata") == 0 | |
1121 | || strcmp (name, ".sbss") == 0 | |
1122 | || strcmp (name, ".lit4") == 0 | |
1123 | || strcmp (name, ".lit8") == 0) | |
1124 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1125 | |
a7519a3c RH |
1126 | return TRUE; |
1127 | } | |
252b5132 | 1128 | |
a7519a3c RH |
1129 | /* Hook called by the linker routine which adds symbols from an object |
1130 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1131 | ||
1132 | static bfd_boolean | |
1133 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1134 | Elf_Internal_Sym *sym, | |
1135 | const char **namep ATTRIBUTE_UNUSED, | |
1136 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1137 | asection **secp, bfd_vma *valp) | |
1138 | { | |
1139 | if (sym->st_shndx == SHN_COMMON | |
1140 | && !info->relocatable | |
1141 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1142 | { |
a7519a3c RH |
1143 | /* Common symbols less than or equal to -G nn bytes are |
1144 | automatically put into .sbss. */ | |
ffcb7aff | 1145 | |
a7519a3c | 1146 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1147 | |
a7519a3c | 1148 | if (scomm == NULL) |
252b5132 | 1149 | { |
a7519a3c RH |
1150 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1151 | (SEC_ALLOC | |
1152 | | SEC_IS_COMMON | |
1153 | | SEC_LINKER_CREATED)); | |
1154 | if (scomm == NULL) | |
1155 | return FALSE; | |
1156 | } | |
ffcb7aff | 1157 | |
a7519a3c RH |
1158 | *secp = scomm; |
1159 | *valp = sym->st_size; | |
1160 | } | |
ffcb7aff | 1161 | |
a7519a3c RH |
1162 | return TRUE; |
1163 | } | |
252b5132 | 1164 | |
a7519a3c | 1165 | /* Create the .got section. */ |
252b5132 | 1166 | |
a7519a3c RH |
1167 | static bfd_boolean |
1168 | elf64_alpha_create_got_section (bfd *abfd, | |
1169 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1170 | { | |
1171 | asection *s; | |
252b5132 | 1172 | |
a7519a3c RH |
1173 | if ((s = bfd_get_section_by_name (abfd, ".got"))) |
1174 | { | |
1175 | /* Check for a non-linker created .got? */ | |
1176 | if (alpha_elf_tdata (abfd)->got == NULL) | |
1177 | alpha_elf_tdata (abfd)->got = s; | |
1178 | return TRUE; | |
1179 | } | |
252b5132 | 1180 | |
a7519a3c RH |
1181 | s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD |
1182 | | SEC_HAS_CONTENTS | |
1183 | | SEC_IN_MEMORY | |
1184 | | SEC_LINKER_CREATED)); | |
1185 | if (s == NULL | |
1186 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1187 | return FALSE; | |
252b5132 | 1188 | |
a7519a3c | 1189 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1190 | |
a7519a3c RH |
1191 | return TRUE; |
1192 | } | |
252b5132 | 1193 | |
a7519a3c | 1194 | /* Create all the dynamic sections. */ |
252b5132 | 1195 | |
a7519a3c RH |
1196 | static bfd_boolean |
1197 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1198 | { | |
1199 | asection *s; | |
1200 | struct elf_link_hash_entry *h; | |
1201 | struct bfd_link_hash_entry *bh; | |
252b5132 | 1202 | |
a7519a3c | 1203 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1204 | |
a7519a3c RH |
1205 | s = bfd_make_section_with_flags (abfd, ".plt", |
1206 | (SEC_ALLOC | SEC_LOAD | |
1207 | | SEC_HAS_CONTENTS | |
1208 | | SEC_IN_MEMORY | |
1209 | | SEC_LINKER_CREATED | |
1210 | | SEC_CODE)); | |
1211 | if (s == NULL | |
1212 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1213 | return FALSE; | |
252b5132 | 1214 | |
a7519a3c RH |
1215 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1216 | .plt section. */ | |
1217 | bh = NULL; | |
1218 | if (! (_bfd_generic_link_add_one_symbol | |
1219 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1220 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
1221 | get_elf_backend_data (abfd)->collect, &bh))) | |
1222 | return FALSE; | |
1223 | h = (struct elf_link_hash_entry *) bh; | |
1224 | h->def_regular = 1; | |
1225 | h->type = STT_OBJECT; | |
d6ad34f6 | 1226 | |
a7519a3c RH |
1227 | if (info->shared |
1228 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1229 | return FALSE; | |
d6ad34f6 | 1230 | |
a7519a3c RH |
1231 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1232 | (SEC_ALLOC | SEC_LOAD | |
1233 | | SEC_HAS_CONTENTS | |
1234 | | SEC_IN_MEMORY | |
1235 | | SEC_LINKER_CREATED | |
1236 | | SEC_READONLY)); | |
1237 | if (s == NULL | |
1238 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1239 | return FALSE; | |
252b5132 | 1240 | |
a7519a3c RH |
1241 | /* We may or may not have created a .got section for this object, but |
1242 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1243 | |
a7519a3c RH |
1244 | if (!elf64_alpha_create_got_section (abfd, info)) |
1245 | return FALSE; | |
1cd6895c | 1246 | |
a7519a3c RH |
1247 | s = bfd_make_section_with_flags (abfd, ".rela.got", |
1248 | (SEC_ALLOC | SEC_LOAD | |
1249 | | SEC_HAS_CONTENTS | |
1250 | | SEC_IN_MEMORY | |
1251 | | SEC_LINKER_CREATED | |
1252 | | SEC_READONLY)); | |
1253 | if (s == NULL | |
1254 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1255 | return FALSE; | |
252b5132 | 1256 | |
a7519a3c RH |
1257 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1258 | dynobj's .got section. We don't do this in the linker script | |
1259 | because we don't want to define the symbol if we are not creating | |
1260 | a global offset table. */ | |
1261 | bh = NULL; | |
1262 | if (!(_bfd_generic_link_add_one_symbol | |
1263 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1264 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1265 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
1266 | return FALSE; | |
1267 | h = (struct elf_link_hash_entry *) bh; | |
1268 | h->def_regular = 1; | |
1269 | h->type = STT_OBJECT; | |
252b5132 | 1270 | |
a7519a3c RH |
1271 | if (info->shared |
1272 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1273 | return FALSE; | |
252b5132 | 1274 | |
a7519a3c | 1275 | elf_hash_table (info)->hgot = h; |
252b5132 | 1276 | |
a7519a3c | 1277 | return TRUE; |
252b5132 | 1278 | } |
a7519a3c RH |
1279 | \f |
1280 | /* Read ECOFF debugging information from a .mdebug section into a | |
1281 | ecoff_debug_info structure. */ | |
252b5132 | 1282 | |
a7519a3c RH |
1283 | static bfd_boolean |
1284 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1285 | struct ecoff_debug_info *debug) | |
252b5132 | 1286 | { |
a7519a3c RH |
1287 | HDRR *symhdr; |
1288 | const struct ecoff_debug_swap *swap; | |
1289 | char *ext_hdr = NULL; | |
252b5132 | 1290 | |
a7519a3c RH |
1291 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1292 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1293 | |
a7519a3c RH |
1294 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1295 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1296 | goto error_return; | |
252b5132 | 1297 | |
a7519a3c RH |
1298 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1299 | swap->external_hdr_size)) | |
1300 | goto error_return; | |
252b5132 | 1301 | |
a7519a3c RH |
1302 | symhdr = &debug->symbolic_header; |
1303 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1304 | |
a7519a3c RH |
1305 | /* The symbolic header contains absolute file offsets and sizes to |
1306 | read. */ | |
1307 | #define READ(ptr, offset, count, size, type) \ | |
1308 | if (symhdr->count == 0) \ | |
1309 | debug->ptr = NULL; \ | |
1310 | else \ | |
1311 | { \ | |
1312 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1313 | debug->ptr = (type) bfd_malloc (amt); \ | |
1314 | if (debug->ptr == NULL) \ | |
1315 | goto error_return; \ | |
1316 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1317 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1318 | goto error_return; \ | |
1319 | } | |
fe8bc63d | 1320 | |
a7519a3c RH |
1321 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1322 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1323 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1324 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1325 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1326 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1327 | union aux_ext *); | |
1328 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1329 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1330 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1331 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1332 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1333 | #undef READ | |
252b5132 | 1334 | |
a7519a3c | 1335 | debug->fdr = NULL; |
252b5132 | 1336 | |
a7519a3c | 1337 | return TRUE; |
252b5132 | 1338 | |
a7519a3c RH |
1339 | error_return: |
1340 | if (ext_hdr != NULL) | |
1341 | free (ext_hdr); | |
1342 | if (debug->line != NULL) | |
1343 | free (debug->line); | |
1344 | if (debug->external_dnr != NULL) | |
1345 | free (debug->external_dnr); | |
1346 | if (debug->external_pdr != NULL) | |
1347 | free (debug->external_pdr); | |
1348 | if (debug->external_sym != NULL) | |
1349 | free (debug->external_sym); | |
1350 | if (debug->external_opt != NULL) | |
1351 | free (debug->external_opt); | |
1352 | if (debug->external_aux != NULL) | |
1353 | free (debug->external_aux); | |
1354 | if (debug->ss != NULL) | |
1355 | free (debug->ss); | |
1356 | if (debug->ssext != NULL) | |
1357 | free (debug->ssext); | |
1358 | if (debug->external_fdr != NULL) | |
1359 | free (debug->external_fdr); | |
1360 | if (debug->external_rfd != NULL) | |
1361 | free (debug->external_rfd); | |
1362 | if (debug->external_ext != NULL) | |
1363 | free (debug->external_ext); | |
1364 | return FALSE; | |
252b5132 RH |
1365 | } |
1366 | ||
a7519a3c RH |
1367 | /* Alpha ELF local labels start with '$'. */ |
1368 | ||
b34976b6 | 1369 | static bfd_boolean |
a7519a3c | 1370 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1371 | { |
a7519a3c RH |
1372 | return name[0] == '$'; |
1373 | } | |
9e756d64 | 1374 | |
a7519a3c RH |
1375 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1376 | routine in order to handle the ECOFF debugging information. We | |
1377 | still call this mips_elf_find_line because of the slot | |
1378 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1379 | |
a7519a3c RH |
1380 | struct mips_elf_find_line |
1381 | { | |
1382 | struct ecoff_debug_info d; | |
1383 | struct ecoff_find_line i; | |
1384 | }; | |
d6ad34f6 | 1385 | |
a7519a3c RH |
1386 | static bfd_boolean |
1387 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1388 | bfd_vma offset, const char **filename_ptr, | |
1389 | const char **functionname_ptr, | |
1390 | unsigned int *line_ptr) | |
1391 | { | |
1392 | asection *msec; | |
252b5132 | 1393 | |
a7519a3c RH |
1394 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1395 | filename_ptr, functionname_ptr, | |
1396 | line_ptr, 0, | |
1397 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1398 | return TRUE; |
9e756d64 | 1399 | |
a7519a3c RH |
1400 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1401 | if (msec != NULL) | |
1bbc9cec | 1402 | { |
a7519a3c RH |
1403 | flagword origflags; |
1404 | struct mips_elf_find_line *fi; | |
1405 | const struct ecoff_debug_swap * const swap = | |
1406 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1407 | |
a7519a3c RH |
1408 | /* If we are called during a link, alpha_elf_final_link may have |
1409 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1410 | if appropriate (which it normally will be). */ | |
1411 | origflags = msec->flags; | |
1412 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1413 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1414 | |
a7519a3c RH |
1415 | fi = elf_tdata (abfd)->find_line_info; |
1416 | if (fi == NULL) | |
1417 | { | |
1418 | bfd_size_type external_fdr_size; | |
1419 | char *fraw_src; | |
1420 | char *fraw_end; | |
1421 | struct fdr *fdr_ptr; | |
1422 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1423 | |
a7519a3c RH |
1424 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1425 | if (fi == NULL) | |
1426 | { | |
1427 | msec->flags = origflags; | |
1428 | return FALSE; | |
1429 | } | |
9e756d64 | 1430 | |
a7519a3c RH |
1431 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1432 | { | |
1433 | msec->flags = origflags; | |
1434 | return FALSE; | |
1435 | } | |
9e756d64 | 1436 | |
a7519a3c RH |
1437 | /* Swap in the FDR information. */ |
1438 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1439 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1440 | if (fi->d.fdr == NULL) | |
1441 | { | |
1442 | msec->flags = origflags; | |
1443 | return FALSE; | |
1444 | } | |
1445 | external_fdr_size = swap->external_fdr_size; | |
1446 | fdr_ptr = fi->d.fdr; | |
1447 | fraw_src = (char *) fi->d.external_fdr; | |
1448 | fraw_end = (fraw_src | |
1449 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1450 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1451 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1452 | |
a7519a3c | 1453 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1454 | |
a7519a3c RH |
1455 | /* Note that we don't bother to ever free this information. |
1456 | find_nearest_line is either called all the time, as in | |
1457 | objdump -l, so the information should be saved, or it is | |
1458 | rarely called, as in ld error messages, so the memory | |
1459 | wasted is unimportant. Still, it would probably be a | |
1460 | good idea for free_cached_info to throw it away. */ | |
1461 | } | |
9e756d64 | 1462 | |
a7519a3c RH |
1463 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1464 | &fi->i, filename_ptr, functionname_ptr, | |
1465 | line_ptr)) | |
1466 | { | |
1467 | msec->flags = origflags; | |
1468 | return TRUE; | |
1469 | } | |
9e756d64 | 1470 | |
a7519a3c | 1471 | msec->flags = origflags; |
9e756d64 | 1472 | } |
9e756d64 | 1473 | |
a7519a3c | 1474 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1475 | |
a7519a3c RH |
1476 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1477 | filename_ptr, functionname_ptr, | |
1478 | line_ptr); | |
9e756d64 | 1479 | } |
a7519a3c RH |
1480 | \f |
1481 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1482 | |
a7519a3c | 1483 | struct extsym_info |
9e756d64 | 1484 | { |
a7519a3c RH |
1485 | bfd *abfd; |
1486 | struct bfd_link_info *info; | |
1487 | struct ecoff_debug_info *debug; | |
1488 | const struct ecoff_debug_swap *swap; | |
1489 | bfd_boolean failed; | |
1490 | }; | |
9e756d64 | 1491 | |
a7519a3c RH |
1492 | static bfd_boolean |
1493 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1494 | { | |
1495 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1496 | bfd_boolean strip; | |
1497 | asection *sec, *output_section; | |
9e756d64 | 1498 | |
a7519a3c RH |
1499 | if (h->root.root.type == bfd_link_hash_warning) |
1500 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1501 | |
a7519a3c RH |
1502 | if (h->root.indx == -2) |
1503 | strip = FALSE; | |
1504 | else if ((h->root.def_dynamic | |
1505 | || h->root.ref_dynamic | |
1506 | || h->root.root.type == bfd_link_hash_new) | |
1507 | && !h->root.def_regular | |
1508 | && !h->root.ref_regular) | |
1509 | strip = TRUE; | |
1510 | else if (einfo->info->strip == strip_all | |
1511 | || (einfo->info->strip == strip_some | |
1512 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1513 | h->root.root.root.string, | |
1514 | FALSE, FALSE) == NULL)) | |
1515 | strip = TRUE; | |
1516 | else | |
1517 | strip = FALSE; | |
9e756d64 | 1518 | |
a7519a3c | 1519 | if (strip) |
b34976b6 | 1520 | return TRUE; |
9e756d64 | 1521 | |
a7519a3c | 1522 | if (h->esym.ifd == -2) |
9e756d64 | 1523 | { |
a7519a3c RH |
1524 | h->esym.jmptbl = 0; |
1525 | h->esym.cobol_main = 0; | |
1526 | h->esym.weakext = 0; | |
1527 | h->esym.reserved = 0; | |
1528 | h->esym.ifd = ifdNil; | |
1529 | h->esym.asym.value = 0; | |
1530 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1531 | |
a7519a3c RH |
1532 | if (h->root.root.type != bfd_link_hash_defined |
1533 | && h->root.root.type != bfd_link_hash_defweak) | |
1534 | h->esym.asym.sc = scAbs; | |
1535 | else | |
1536 | { | |
1537 | const char *name; | |
9e756d64 | 1538 | |
a7519a3c RH |
1539 | sec = h->root.root.u.def.section; |
1540 | output_section = sec->output_section; | |
9e756d64 | 1541 | |
a7519a3c RH |
1542 | /* When making a shared library and symbol h is the one from |
1543 | the another shared library, OUTPUT_SECTION may be null. */ | |
1544 | if (output_section == NULL) | |
1545 | h->esym.asym.sc = scUndefined; | |
1546 | else | |
1547 | { | |
1548 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1549 | |
a7519a3c RH |
1550 | if (strcmp (name, ".text") == 0) |
1551 | h->esym.asym.sc = scText; | |
1552 | else if (strcmp (name, ".data") == 0) | |
1553 | h->esym.asym.sc = scData; | |
1554 | else if (strcmp (name, ".sdata") == 0) | |
1555 | h->esym.asym.sc = scSData; | |
1556 | else if (strcmp (name, ".rodata") == 0 | |
1557 | || strcmp (name, ".rdata") == 0) | |
1558 | h->esym.asym.sc = scRData; | |
1559 | else if (strcmp (name, ".bss") == 0) | |
1560 | h->esym.asym.sc = scBss; | |
1561 | else if (strcmp (name, ".sbss") == 0) | |
1562 | h->esym.asym.sc = scSBss; | |
1563 | else if (strcmp (name, ".init") == 0) | |
1564 | h->esym.asym.sc = scInit; | |
1565 | else if (strcmp (name, ".fini") == 0) | |
1566 | h->esym.asym.sc = scFini; | |
1567 | else | |
1568 | h->esym.asym.sc = scAbs; | |
1569 | } | |
1570 | } | |
9e756d64 | 1571 | |
a7519a3c RH |
1572 | h->esym.asym.reserved = 0; |
1573 | h->esym.asym.index = indexNil; | |
1574 | } | |
9e756d64 | 1575 | |
a7519a3c RH |
1576 | if (h->root.root.type == bfd_link_hash_common) |
1577 | h->esym.asym.value = h->root.root.u.c.size; | |
1578 | else if (h->root.root.type == bfd_link_hash_defined | |
1579 | || h->root.root.type == bfd_link_hash_defweak) | |
1580 | { | |
1581 | if (h->esym.asym.sc == scCommon) | |
1582 | h->esym.asym.sc = scBss; | |
1583 | else if (h->esym.asym.sc == scSCommon) | |
1584 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1585 | |
a7519a3c RH |
1586 | sec = h->root.root.u.def.section; |
1587 | output_section = sec->output_section; | |
1588 | if (output_section != NULL) | |
1589 | h->esym.asym.value = (h->root.root.u.def.value | |
1590 | + sec->output_offset | |
1591 | + output_section->vma); | |
1592 | else | |
1593 | h->esym.asym.value = 0; | |
1594 | } | |
1595 | else if (h->root.needs_plt) | |
1596 | { | |
1597 | /* Set type and value for a symbol with a function stub. */ | |
1598 | h->esym.asym.st = stProc; | |
1599 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
1600 | if (sec == NULL) | |
1601 | h->esym.asym.value = 0; | |
1602 | else | |
1603 | { | |
1604 | output_section = sec->output_section; | |
1605 | if (output_section != NULL) | |
1606 | h->esym.asym.value = (h->root.plt.offset | |
1607 | + sec->output_offset | |
1608 | + output_section->vma); | |
1609 | else | |
1610 | h->esym.asym.value = 0; | |
1611 | } | |
1612 | } | |
9e756d64 | 1613 | |
a7519a3c RH |
1614 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1615 | h->root.root.root.string, | |
1616 | &h->esym)) | |
1617 | { | |
1618 | einfo->failed = TRUE; | |
1619 | return FALSE; | |
9e756d64 RH |
1620 | } |
1621 | ||
a7519a3c RH |
1622 | return TRUE; |
1623 | } | |
1624 | \f | |
1625 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1626 | |
a7519a3c RH |
1627 | static struct alpha_elf_got_entry * |
1628 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1629 | unsigned long r_type, unsigned long r_symndx, | |
1630 | bfd_vma r_addend) | |
1631 | { | |
1632 | struct alpha_elf_got_entry *gotent; | |
1633 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1634 | |
a7519a3c RH |
1635 | if (h) |
1636 | slot = &h->got_entries; | |
1637 | else | |
1638 | { | |
1639 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1640 | |
a7519a3c | 1641 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1642 | |
a7519a3c RH |
1643 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1644 | if (!local_got_entries) | |
1645 | { | |
1646 | bfd_size_type size; | |
1647 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1648 | |
a7519a3c RH |
1649 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1650 | size = symtab_hdr->sh_info; | |
1651 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1652 | |
a7519a3c RH |
1653 | local_got_entries |
1654 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1655 | if (!local_got_entries) | |
1656 | return NULL; | |
1657 | ||
1658 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1659 | } | |
1660 | ||
1661 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1662 | } |
1663 | ||
a7519a3c RH |
1664 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1665 | if (gotent->gotobj == abfd | |
1666 | && gotent->reloc_type == r_type | |
1667 | && gotent->addend == r_addend) | |
1668 | break; | |
1669 | ||
1670 | if (!gotent) | |
9e756d64 | 1671 | { |
a7519a3c RH |
1672 | int entry_size; |
1673 | bfd_size_type amt; | |
9e756d64 | 1674 | |
a7519a3c RH |
1675 | amt = sizeof (struct alpha_elf_got_entry); |
1676 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1677 | if (!gotent) | |
1678 | return NULL; | |
9e756d64 | 1679 | |
a7519a3c RH |
1680 | gotent->gotobj = abfd; |
1681 | gotent->addend = r_addend; | |
1682 | gotent->got_offset = -1; | |
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 | ||
a7519a3c RH |
1702 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1703 | ||
b34976b6 | 1704 | static bfd_boolean |
a7519a3c RH |
1705 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1706 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1707 | { |
a7519a3c RH |
1708 | bfd *dynobj; |
1709 | asection *sreloc; | |
1710 | const char *rel_sec_name; | |
252b5132 | 1711 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1712 | struct alpha_elf_link_hash_entry **sym_hashes; |
1713 | const Elf_Internal_Rela *rel, *relend; | |
1714 | bfd_boolean got_created; | |
1715 | bfd_size_type amt; | |
252b5132 | 1716 | |
a7519a3c RH |
1717 | if (info->relocatable) |
1718 | return TRUE; | |
252b5132 | 1719 | |
a7519a3c RH |
1720 | /* Don't do anything special with non-loaded, non-alloced sections. |
1721 | In particular, any relocs in such sections should not affect GOT | |
1722 | and PLT reference counting (ie. we don't allow them to create GOT | |
1723 | or PLT entries), there's no possibility or desire to optimize TLS | |
1724 | relocs, and there's not much point in propagating relocs to shared | |
1725 | libs that the dynamic linker won't relocate. */ | |
1726 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1727 | return TRUE; |
252b5132 | 1728 | |
a7519a3c RH |
1729 | dynobj = elf_hash_table(info)->dynobj; |
1730 | if (dynobj == NULL) | |
1731 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
252b5132 | 1732 | |
a7519a3c RH |
1733 | sreloc = NULL; |
1734 | rel_sec_name = NULL; | |
1735 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1736 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
1737 | got_created = FALSE; | |
1738 | ||
1739 | relend = relocs + sec->reloc_count; | |
1740 | for (rel = relocs; rel < relend; ++rel) | |
1741 | { | |
1742 | enum { | |
1743 | NEED_GOT = 1, | |
1744 | NEED_GOT_ENTRY = 2, | |
1745 | NEED_DYNREL = 4 | |
1746 | }; | |
1747 | ||
1748 | unsigned long r_symndx, r_type; | |
1749 | struct alpha_elf_link_hash_entry *h; | |
1750 | unsigned int gotent_flags; | |
1751 | bfd_boolean maybe_dynamic; | |
1752 | unsigned int need; | |
1753 | bfd_vma addend; | |
1754 | ||
1755 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1756 | if (r_symndx < symtab_hdr->sh_info) | |
1757 | h = NULL; | |
1758 | else | |
1759 | { | |
1760 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1761 | |
a7519a3c RH |
1762 | while (h->root.root.type == bfd_link_hash_indirect |
1763 | || h->root.root.type == bfd_link_hash_warning) | |
1764 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1765 | |
a7519a3c RH |
1766 | h->root.ref_regular = 1; |
1767 | } | |
252b5132 | 1768 | |
a7519a3c RH |
1769 | /* We can only get preliminary data on whether a symbol is |
1770 | locally or externally defined, as not all of the input files | |
1771 | have yet been processed. Do something with what we know, as | |
1772 | this may help reduce memory usage and processing time later. */ | |
1773 | maybe_dynamic = FALSE; | |
1774 | if (h && ((info->shared | |
1775 | && (!info->symbolic | |
1776 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1777 | || !h->root.def_regular | |
1778 | || h->root.root.type == bfd_link_hash_defweak)) | |
1779 | maybe_dynamic = TRUE; | |
252b5132 | 1780 | |
a7519a3c RH |
1781 | need = 0; |
1782 | gotent_flags = 0; | |
1783 | r_type = ELF64_R_TYPE (rel->r_info); | |
1784 | addend = rel->r_addend; | |
9e756d64 | 1785 | |
9e756d64 RH |
1786 | switch (r_type) |
1787 | { | |
1788 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1789 | need = NEED_GOT | NEED_GOT_ENTRY; |
1790 | ||
1791 | /* Remember how this literal is used from its LITUSEs. | |
1792 | This will be important when it comes to decide if we can | |
1793 | create a .plt entry for a function symbol. */ | |
1794 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
1795 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
1796 | gotent_flags |= 1 << rel->r_addend; | |
1797 | --rel; | |
1798 | ||
1799 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1800 | if (gotent_flags == 0) | |
1801 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1802 | break; | |
1803 | ||
1804 | case R_ALPHA_GPDISP: | |
1805 | case R_ALPHA_GPREL16: | |
1806 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1807 | case R_ALPHA_GPRELHIGH: |
1808 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1809 | case R_ALPHA_BRSGP: |
1810 | need = NEED_GOT; | |
1811 | break; | |
1812 | ||
1813 | case R_ALPHA_REFLONG: | |
1814 | case R_ALPHA_REFQUAD: | |
1815 | if (info->shared || maybe_dynamic) | |
1816 | need = NEED_DYNREL; | |
cc03ec80 RH |
1817 | break; |
1818 | ||
9e756d64 | 1819 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1820 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1821 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1822 | r_symndx = 0; |
a7519a3c RH |
1823 | h = 0; |
1824 | maybe_dynamic = FALSE; | |
1825 | /* FALLTHRU */ | |
1826 | ||
1827 | case R_ALPHA_TLSGD: | |
1828 | case R_ALPHA_GOTDTPREL: | |
1829 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1830 | break; |
cc03ec80 | 1831 | |
a7519a3c RH |
1832 | case R_ALPHA_GOTTPREL: |
1833 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1834 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1835 | if (info->shared) | |
1836 | info->flags |= DF_STATIC_TLS; | |
1837 | break; | |
1838 | ||
1839 | case R_ALPHA_TPREL64: | |
1840 | if (info->shared || maybe_dynamic) | |
1841 | need = NEED_DYNREL; | |
1842 | if (info->shared) | |
1843 | info->flags |= DF_STATIC_TLS; | |
1844 | break; | |
252b5132 RH |
1845 | } |
1846 | ||
a7519a3c | 1847 | if (need & NEED_GOT) |
252b5132 | 1848 | { |
a7519a3c | 1849 | if (!got_created) |
6cdc0ccc | 1850 | { |
a7519a3c RH |
1851 | if (!elf64_alpha_create_got_section (abfd, info)) |
1852 | return FALSE; | |
cc03ec80 | 1853 | |
a7519a3c RH |
1854 | /* Make sure the object's gotobj is set to itself so |
1855 | that we default to every object with its own .got. | |
1856 | We'll merge .gots later once we've collected each | |
1857 | object's info. */ | |
1858 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
252b5132 | 1859 | |
a7519a3c | 1860 | got_created = 1; |
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 RH |
1880 | /* Make a guess as to whether a .plt entry is needed. */ |
1881 | if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
1882 | && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
1883 | h->root.needs_plt = 1; | |
1884 | else | |
1885 | h->root.needs_plt = 0; | |
1886 | } | |
1887 | } | |
252b5132 RH |
1888 | } |
1889 | ||
a7519a3c | 1890 | if (need & NEED_DYNREL) |
9e756d64 | 1891 | { |
a7519a3c | 1892 | if (rel_sec_name == NULL) |
9e756d64 | 1893 | { |
a7519a3c RH |
1894 | rel_sec_name = (bfd_elf_string_from_elf_section |
1895 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1896 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1897 | if (rel_sec_name == NULL) | |
1898 | return FALSE; | |
1899 | ||
1900 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1901 | && strcmp (bfd_get_section_name (abfd, sec), | |
1902 | rel_sec_name+5) == 0); | |
9e756d64 | 1903 | } |
a7519a3c RH |
1904 | |
1905 | /* We need to create the section here now whether we eventually | |
1906 | use it or not so that it gets mapped to an output section by | |
1907 | the linker. If not used, we'll kill it in | |
1908 | size_dynamic_sections. */ | |
1909 | if (sreloc == NULL) | |
9e756d64 | 1910 | { |
a7519a3c RH |
1911 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
1912 | if (sreloc == NULL) | |
1913 | { | |
1914 | flagword flags; | |
1915 | ||
1916 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1917 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1918 | if (sec->flags & SEC_ALLOC) | |
1919 | flags |= SEC_ALLOC | SEC_LOAD; | |
1920 | sreloc = bfd_make_section_with_flags (dynobj, | |
1921 | rel_sec_name, | |
1922 | flags); | |
1923 | if (sreloc == NULL | |
1924 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1925 | return FALSE; | |
1926 | } | |
9e756d64 | 1927 | } |
252b5132 | 1928 | |
a7519a3c RH |
1929 | if (h) |
1930 | { | |
1931 | /* Since we havn't seen all of the input symbols yet, we | |
1932 | don't know whether we'll actually need a dynamic relocation | |
1933 | entry for this reloc. So make a record of it. Once we | |
1934 | find out if this thing needs dynamic relocation we'll | |
1935 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1936 | |
a7519a3c | 1937 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1938 | |
a7519a3c RH |
1939 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1940 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1941 | break; | |
252b5132 | 1942 | |
a7519a3c RH |
1943 | if (!rent) |
1944 | { | |
1945 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1946 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1947 | if (!rent) | |
1948 | return FALSE; | |
252b5132 | 1949 | |
a7519a3c RH |
1950 | rent->srel = sreloc; |
1951 | rent->rtype = r_type; | |
1952 | rent->count = 1; | |
1953 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1954 | |
a7519a3c RH |
1955 | rent->next = h->reloc_entries; |
1956 | h->reloc_entries = rent; | |
1957 | } | |
1958 | else | |
1959 | rent->count++; | |
1960 | } | |
1961 | else if (info->shared) | |
1962 | { | |
1963 | /* If this is a shared library, and the section is to be | |
1964 | loaded into memory, we need a RELATIVE reloc. */ | |
1965 | sreloc->size += sizeof (Elf64_External_Rela); | |
1966 | if (sec->flags & SEC_READONLY) | |
1967 | info->flags |= DF_TEXTREL; | |
1968 | } | |
252b5132 RH |
1969 | } |
1970 | } | |
1971 | ||
b34976b6 | 1972 | return TRUE; |
252b5132 | 1973 | } |
252b5132 | 1974 | |
a7519a3c RH |
1975 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1976 | regular object. The current definition is in some section of the | |
1977 | dynamic object, but we're not including those sections. We have to | |
1978 | change the definition to something the rest of the link can | |
1979 | understand. */ | |
252b5132 | 1980 | |
b34976b6 | 1981 | static bfd_boolean |
a7519a3c RH |
1982 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
1983 | struct elf_link_hash_entry *h) | |
252b5132 | 1984 | { |
a7519a3c RH |
1985 | bfd *dynobj; |
1986 | asection *s; | |
1987 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 1988 | |
a7519a3c RH |
1989 | dynobj = elf_hash_table(info)->dynobj; |
1990 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 1991 | |
a7519a3c RH |
1992 | /* Now that we've seen all of the input symbols, finalize our decision |
1993 | about whether this symbol should get a .plt entry. */ | |
252b5132 | 1994 | |
a7519a3c RH |
1995 | if (alpha_elf_dynamic_symbol_p (h, info) |
1996 | && ((h->type == STT_FUNC | |
1997 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
1998 | || (h->type == STT_NOTYPE | |
1999 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
2000 | && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))) | |
2001 | /* Don't prevent otherwise valid programs from linking by attempting | |
2002 | to create a new .got entry somewhere. A Correct Solution would be | |
2003 | to add a new .got section to a new object file and let it be merged | |
2004 | somewhere later. But for now don't bother. */ | |
2005 | && ah->got_entries) | |
252b5132 | 2006 | { |
a7519a3c | 2007 | h->needs_plt = 1; |
252b5132 | 2008 | |
a7519a3c RH |
2009 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2010 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2011 | return FALSE; | |
204692d7 | 2012 | |
a7519a3c RH |
2013 | /* The first bit of the .plt is reserved. */ |
2014 | if (s->size == 0) | |
2015 | s->size = PLT_HEADER_SIZE; | |
204692d7 | 2016 | |
a7519a3c RH |
2017 | h->plt.offset = s->size; |
2018 | s->size += PLT_ENTRY_SIZE; | |
204692d7 | 2019 | |
a7519a3c RH |
2020 | /* If this symbol is not defined in a regular file, and we are not |
2021 | generating a shared library, then set the symbol to the location | |
2022 | in the .plt. This is required to make function pointers compare | |
2023 | equal between the normal executable and the shared library. */ | |
2024 | if (! info->shared | |
2025 | && h->root.type != bfd_link_hash_defweak) | |
2026 | { | |
2027 | ah->plt_old_section = h->root.u.def.section; | |
2028 | ah->plt_old_value = h->root.u.def.value; | |
2029 | ah->flags |= ALPHA_ELF_LINK_HASH_PLT_LOC; | |
2030 | h->root.u.def.section = s; | |
2031 | h->root.u.def.value = h->plt.offset; | |
2032 | } | |
252b5132 | 2033 | |
a7519a3c RH |
2034 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ |
2035 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2036 | BFD_ASSERT (s != NULL); | |
2037 | s->size += sizeof (Elf64_External_Rela); | |
252b5132 | 2038 | |
a7519a3c RH |
2039 | return TRUE; |
2040 | } | |
2041 | else | |
2042 | h->needs_plt = 0; | |
252b5132 | 2043 | |
a7519a3c RH |
2044 | /* If this is a weak symbol, and there is a real definition, the |
2045 | processor independent code will have arranged for us to see the | |
2046 | real definition first, and we can just use the same value. */ | |
2047 | if (h->u.weakdef != NULL) | |
252b5132 | 2048 | { |
a7519a3c RH |
2049 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2050 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2051 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2052 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2053 | return TRUE; | |
252b5132 | 2054 | } |
a7519a3c RH |
2055 | |
2056 | /* This is a reference to a symbol defined by a dynamic object which | |
2057 | is not a function. The Alpha, since it uses .got entries for all | |
2058 | symbols even in regular objects, does not need the hackery of a | |
2059 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2060 | |
b34976b6 | 2061 | return TRUE; |
252b5132 RH |
2062 | } |
2063 | ||
a7519a3c RH |
2064 | /* Symbol versioning can create new symbols, and make our old symbols |
2065 | indirect to the new ones. Consolidate the got and reloc information | |
2066 | in these situations. */ | |
252b5132 | 2067 | |
b34976b6 | 2068 | static bfd_boolean |
a7519a3c RH |
2069 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2070 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2071 | { |
a7519a3c | 2072 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2073 | |
a7519a3c RH |
2074 | if (hi->root.root.type != bfd_link_hash_indirect) |
2075 | return TRUE; | |
2076 | hs = hi; | |
2077 | do { | |
2078 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2079 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2080 | |
a7519a3c RH |
2081 | /* Merge the flags. Whee. */ |
2082 | ||
2083 | hs->flags |= hi->flags; | |
2084 | ||
2085 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2086 | doing so, since we don't need it anymore. */ | |
2087 | ||
2088 | if (hs->got_entries == NULL) | |
2089 | hs->got_entries = hi->got_entries; | |
2090 | else | |
2091 | { | |
2092 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2093 | ||
2094 | gsh = hs->got_entries; | |
2095 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2096 | { |
a7519a3c RH |
2097 | gin = gi->next; |
2098 | for (gs = gsh; gs ; gs = gs->next) | |
2099 | if (gi->gotobj == gs->gotobj | |
2100 | && gi->reloc_type == gs->reloc_type | |
2101 | && gi->addend == gs->addend) | |
2102 | { | |
2103 | gi->use_count += gs->use_count; | |
2104 | goto got_found; | |
2105 | } | |
2106 | gi->next = hs->got_entries; | |
2107 | hs->got_entries = gi; | |
2108 | got_found:; | |
252b5132 | 2109 | } |
a7519a3c RH |
2110 | } |
2111 | hi->got_entries = NULL; | |
252b5132 | 2112 | |
a7519a3c RH |
2113 | /* And similar for the reloc entries. */ |
2114 | ||
2115 | if (hs->reloc_entries == NULL) | |
2116 | hs->reloc_entries = hi->reloc_entries; | |
2117 | else | |
2118 | { | |
2119 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2120 | ||
2121 | rsh = hs->reloc_entries; | |
2122 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2123 | { | |
2124 | rin = ri->next; | |
2125 | for (rs = rsh; rs ; rs = rs->next) | |
2126 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2127 | { | |
2128 | rs->count += ri->count; | |
2129 | goto found_reloc; | |
2130 | } | |
2131 | ri->next = hs->reloc_entries; | |
2132 | hs->reloc_entries = ri; | |
2133 | found_reloc:; | |
2134 | } | |
252b5132 | 2135 | } |
a7519a3c | 2136 | hi->reloc_entries = NULL; |
252b5132 | 2137 | |
b34976b6 | 2138 | return TRUE; |
252b5132 RH |
2139 | } |
2140 | ||
a7519a3c | 2141 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2142 | |
b34976b6 | 2143 | static bfd_boolean |
a7519a3c | 2144 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2145 | { |
a7519a3c RH |
2146 | int total = alpha_elf_tdata (a)->total_got_size; |
2147 | bfd *bsub; | |
252b5132 | 2148 | |
a7519a3c RH |
2149 | /* Trivial quick fallout test. */ |
2150 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2151 | return TRUE; | |
252b5132 | 2152 | |
a7519a3c RH |
2153 | /* By their nature, local .got entries cannot be merged. */ |
2154 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2155 | return FALSE; |
252b5132 | 2156 | |
a7519a3c RH |
2157 | /* Failing the common trivial comparison, we must effectively |
2158 | perform the merge. Not actually performing the merge means that | |
2159 | we don't have to store undo information in case we fail. */ | |
2160 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2161 | { | |
2162 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2163 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2164 | int i, n; | |
2165 | ||
2166 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2167 | for (i = 0; i < n; ++i) | |
2168 | { | |
2169 | struct alpha_elf_got_entry *ae, *be; | |
2170 | struct alpha_elf_link_hash_entry *h; | |
2171 | ||
2172 | h = hashes[i]; | |
2173 | while (h->root.root.type == bfd_link_hash_indirect | |
2174 | || h->root.root.type == bfd_link_hash_warning) | |
2175 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2176 | ||
2177 | for (be = h->got_entries; be ; be = be->next) | |
2178 | { | |
2179 | if (be->use_count == 0) | |
2180 | continue; | |
2181 | if (be->gotobj != b) | |
2182 | continue; | |
2183 | ||
2184 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2185 | if (ae->gotobj == a | |
2186 | && ae->reloc_type == be->reloc_type | |
2187 | && ae->addend == be->addend) | |
2188 | goto global_found; | |
2189 | ||
2190 | total += alpha_got_entry_size (be->reloc_type); | |
2191 | if (total > MAX_GOT_SIZE) | |
2192 | return FALSE; | |
2193 | global_found:; | |
2194 | } | |
2195 | } | |
2196 | } | |
252b5132 | 2197 | |
b34976b6 | 2198 | return TRUE; |
252b5132 RH |
2199 | } |
2200 | ||
a7519a3c | 2201 | /* Actually merge two .got tables. */ |
252b5132 | 2202 | |
a7519a3c RH |
2203 | static void |
2204 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2205 | { |
a7519a3c RH |
2206 | int total = alpha_elf_tdata (a)->total_got_size; |
2207 | bfd *bsub; | |
252b5132 | 2208 | |
a7519a3c RH |
2209 | /* Remember local expansion. */ |
2210 | { | |
2211 | int e = alpha_elf_tdata (b)->local_got_size; | |
2212 | total += e; | |
2213 | alpha_elf_tdata (a)->local_got_size += e; | |
2214 | } | |
252b5132 | 2215 | |
a7519a3c RH |
2216 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2217 | { | |
2218 | struct alpha_elf_got_entry **local_got_entries; | |
2219 | struct alpha_elf_link_hash_entry **hashes; | |
2220 | Elf_Internal_Shdr *symtab_hdr; | |
2221 | int i, n; | |
252b5132 | 2222 | |
a7519a3c RH |
2223 | /* Let the local .got entries know they are part of a new subsegment. */ |
2224 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2225 | if (local_got_entries) | |
2226 | { | |
2227 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2228 | for (i = 0; i < n; ++i) | |
2229 | { | |
2230 | struct alpha_elf_got_entry *ent; | |
2231 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2232 | ent->gotobj = a; | |
2233 | } | |
2234 | } | |
252b5132 | 2235 | |
a7519a3c RH |
2236 | /* Merge the global .got entries. */ |
2237 | hashes = alpha_elf_sym_hashes (bsub); | |
2238 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2239 | |
a7519a3c RH |
2240 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2241 | for (i = 0; i < n; ++i) | |
2242 | { | |
2243 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2244 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2245 | |
a7519a3c RH |
2246 | h = hashes[i]; |
2247 | while (h->root.root.type == bfd_link_hash_indirect | |
2248 | || h->root.root.type == bfd_link_hash_warning) | |
2249 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2250 | |
a7519a3c RH |
2251 | pbe = start = &h->got_entries; |
2252 | while ((be = *pbe) != NULL) | |
2253 | { | |
2254 | if (be->use_count == 0) | |
2255 | { | |
2256 | *pbe = be->next; | |
2257 | memset (be, 0xa5, sizeof (*be)); | |
2258 | goto kill; | |
2259 | } | |
2260 | if (be->gotobj != b) | |
2261 | goto next; | |
2262 | ||
2263 | for (ae = *start; ae ; ae = ae->next) | |
2264 | if (ae->gotobj == a | |
2265 | && ae->reloc_type == be->reloc_type | |
2266 | && ae->addend == be->addend) | |
2267 | { | |
2268 | ae->flags |= be->flags; | |
2269 | ae->use_count += be->use_count; | |
2270 | *pbe = be->next; | |
2271 | memset (be, 0xa5, sizeof (*be)); | |
2272 | goto kill; | |
2273 | } | |
2274 | be->gotobj = a; | |
2275 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2276 | |
a7519a3c RH |
2277 | next:; |
2278 | pbe = &be->next; | |
2279 | kill:; | |
2280 | } | |
2281 | } | |
252b5132 | 2282 | |
a7519a3c RH |
2283 | alpha_elf_tdata (bsub)->gotobj = a; |
2284 | } | |
2285 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2286 | |
a7519a3c RH |
2287 | /* Merge the two in_got chains. */ |
2288 | { | |
2289 | bfd *next; | |
252b5132 | 2290 | |
a7519a3c RH |
2291 | bsub = a; |
2292 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2293 | bsub = next; | |
252b5132 | 2294 | |
a7519a3c RH |
2295 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2296 | } | |
252b5132 | 2297 | } |
a7519a3c RH |
2298 | |
2299 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2300 | |
b34976b6 | 2301 | static bfd_boolean |
a7519a3c RH |
2302 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2303 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2304 | { |
a7519a3c RH |
2305 | bfd_boolean result = TRUE; |
2306 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 2307 | |
a7519a3c RH |
2308 | if (h->root.root.type == bfd_link_hash_warning) |
2309 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2310 | |
a7519a3c RH |
2311 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2312 | if (gotent->use_count > 0) | |
2313 | { | |
2314 | struct alpha_elf_obj_tdata *td; | |
2315 | bfd_size_type *plge; | |
252b5132 | 2316 | |
a7519a3c RH |
2317 | td = alpha_elf_tdata (gotent->gotobj); |
2318 | if (td == NULL) | |
2319 | { | |
2320 | _bfd_error_handler (_("Symbol %s has no GOT subsection for offset 0x%x"), | |
2321 | h->root.root.root.string, gotent->got_offset); | |
2322 | result = FALSE; | |
2323 | continue; | |
2324 | } | |
2325 | plge = &td->got->size; | |
2326 | gotent->got_offset = *plge; | |
2327 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2328 | } | |
252b5132 | 2329 | |
a7519a3c RH |
2330 | return result; |
2331 | } | |
252b5132 | 2332 | |
a7519a3c RH |
2333 | static void |
2334 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2335 | { | |
2336 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
252b5132 | 2337 | |
a7519a3c RH |
2338 | /* First, zero out the .got sizes, as we may be recalculating the |
2339 | .got after optimizing it. */ | |
2340 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2341 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2342 | |
a7519a3c RH |
2343 | /* Next, fill in the offsets for all the global entries. */ |
2344 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2345 | elf64_alpha_calc_got_offsets_for_symbol, | |
2346 | NULL); | |
252b5132 | 2347 | |
a7519a3c RH |
2348 | /* Finally, fill in the offsets for the local entries. */ |
2349 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2350 | { | |
2351 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2352 | bfd *j; | |
252b5132 | 2353 | |
a7519a3c RH |
2354 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2355 | { | |
2356 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2357 | int k, n; | |
252b5132 | 2358 | |
a7519a3c RH |
2359 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2360 | if (!local_got_entries) | |
2361 | continue; | |
252b5132 | 2362 | |
a7519a3c RH |
2363 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2364 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2365 | if (gotent->use_count > 0) | |
2366 | { | |
2367 | gotent->got_offset = got_offset; | |
2368 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2369 | } | |
2370 | } | |
252b5132 | 2371 | |
a7519a3c RH |
2372 | alpha_elf_tdata(i)->got->size = got_offset; |
2373 | } | |
2374 | } | |
252b5132 | 2375 | |
a7519a3c | 2376 | /* Constructs the gots. */ |
252b5132 | 2377 | |
b34976b6 | 2378 | static bfd_boolean |
a7519a3c | 2379 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2380 | { |
a7519a3c RH |
2381 | bfd *i, *got_list, *cur_got_obj = NULL; |
2382 | int something_changed = 0; | |
252b5132 | 2383 | |
a7519a3c | 2384 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2385 | |
a7519a3c RH |
2386 | /* On the first time through, pretend we have an existing got list |
2387 | consisting of all of the input files. */ | |
2388 | if (got_list == NULL) | |
252b5132 | 2389 | { |
a7519a3c | 2390 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2391 | { |
a7519a3c RH |
2392 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2393 | if (this_got == NULL) | |
2394 | continue; | |
252b5132 | 2395 | |
a7519a3c RH |
2396 | /* We are assuming no merging has yet occurred. */ |
2397 | BFD_ASSERT (this_got == i); | |
252b5132 | 2398 | |
a7519a3c | 2399 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2400 | { |
a7519a3c RH |
2401 | /* Yikes! A single object file has too many entries. */ |
2402 | (*_bfd_error_handler) | |
2403 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2404 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2405 | return FALSE; |
252b5132 | 2406 | } |
252b5132 | 2407 | |
a7519a3c RH |
2408 | if (got_list == NULL) |
2409 | got_list = this_got; | |
2410 | else | |
2411 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2412 | cur_got_obj = this_got; | |
252b5132 RH |
2413 | } |
2414 | ||
a7519a3c RH |
2415 | /* Strange degenerate case of no got references. */ |
2416 | if (got_list == NULL) | |
2417 | return TRUE; | |
2418 | ||
2419 | alpha_elf_hash_table (info)->got_list = got_list; | |
2420 | ||
2421 | /* Force got offsets to be recalculated. */ | |
2422 | something_changed = 1; | |
2423 | } | |
2424 | ||
2425 | cur_got_obj = got_list; | |
2426 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2427 | while (i != NULL) | |
2428 | { | |
2429 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2430 | { |
a7519a3c | 2431 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2432 | |
a7519a3c RH |
2433 | alpha_elf_tdata(i)->got->size = 0; |
2434 | i = alpha_elf_tdata(i)->got_link_next; | |
2435 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2436 | ||
2437 | something_changed = 1; | |
2438 | } | |
2439 | else | |
2440 | { | |
2441 | cur_got_obj = i; | |
2442 | i = alpha_elf_tdata(i)->got_link_next; | |
2443 | } | |
252b5132 RH |
2444 | } |
2445 | ||
a7519a3c RH |
2446 | /* Once the gots have been merged, fill in the got offsets for |
2447 | everything therein. */ | |
2448 | if (1 || something_changed) | |
2449 | elf64_alpha_calc_got_offsets (info); | |
252b5132 | 2450 | |
a7519a3c | 2451 | return TRUE; |
252b5132 | 2452 | } |
252b5132 | 2453 | |
b34976b6 | 2454 | static bfd_boolean |
a7519a3c | 2455 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2456 | { |
a7519a3c RH |
2457 | asection *splt = (asection *) data; |
2458 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 2459 | |
a7519a3c RH |
2460 | /* If we didn't need an entry before, we still don't. */ |
2461 | if (!h->root.needs_plt) | |
2462 | return TRUE; | |
e92d460e | 2463 | |
a7519a3c RH |
2464 | /* There must still be a LITERAL got entry for the function. */ |
2465 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2466 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2467 | && gotent->use_count > 0) | |
2468 | break; | |
2469 | ||
2470 | /* If there is, reset the PLT offset. If not, there's no longer | |
2471 | a need for the PLT entry. */ | |
2472 | if (gotent) | |
2473 | { | |
2474 | if (splt->size == 0) | |
2475 | splt->size = PLT_HEADER_SIZE; | |
2476 | h->root.plt.offset = splt->size; | |
2477 | splt->size += PLT_ENTRY_SIZE; | |
2478 | } | |
252b5132 | 2479 | else |
a7519a3c RH |
2480 | { |
2481 | h->root.needs_plt = 0; | |
2482 | h->root.plt.offset = -1; | |
252b5132 | 2483 | |
a7519a3c RH |
2484 | /* Undo the definition frobbing begun in adjust_dynamic_symbol. */ |
2485 | if (h->flags & ALPHA_ELF_LINK_HASH_PLT_LOC) | |
2486 | { | |
2487 | h->root.root.u.def.section = h->plt_old_section; | |
2488 | h->root.root.u.def.value = h->plt_old_value; | |
2489 | h->flags &= ~ALPHA_ELF_LINK_HASH_PLT_LOC; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | return TRUE; | |
2494 | } | |
2495 | ||
2496 | /* Called from relax_section to rebuild the PLT in light of | |
2497 | potential changes in the function's status. */ | |
2498 | ||
2499 | static bfd_boolean | |
2500 | elf64_alpha_size_plt_section (struct bfd_link_info *info) | |
2501 | { | |
2502 | asection *splt, *spltrel; | |
2503 | unsigned long entries; | |
2504 | bfd *dynobj; | |
2505 | ||
2506 | dynobj = elf_hash_table(info)->dynobj; | |
2507 | splt = bfd_get_section_by_name(dynobj, ".plt"); | |
2508 | if (splt == NULL) | |
b34976b6 | 2509 | return TRUE; |
252b5132 | 2510 | |
a7519a3c | 2511 | splt->size = 0; |
252b5132 | 2512 | |
a7519a3c RH |
2513 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2514 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2515 | |
a7519a3c RH |
2516 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2517 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2518 | if (splt->size) | |
2519 | entries = (splt->size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
2520 | else | |
2521 | entries = 0; | |
2522 | spltrel->size = entries * sizeof (Elf64_External_Rela); | |
e92d460e | 2523 | |
a7519a3c RH |
2524 | return TRUE; |
2525 | } | |
e92d460e | 2526 | |
a7519a3c RH |
2527 | static bfd_boolean |
2528 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2529 | struct bfd_link_info *info) | |
2530 | { | |
2531 | bfd *i; | |
252b5132 | 2532 | |
a7519a3c RH |
2533 | if (info->relocatable) |
2534 | return TRUE; | |
252b5132 | 2535 | |
a7519a3c RH |
2536 | /* First, take care of the indirect symbols created by versioning. */ |
2537 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2538 | elf64_alpha_merge_ind_symbols, | |
2539 | NULL); | |
252b5132 | 2540 | |
a7519a3c RH |
2541 | if (!elf64_alpha_size_got_sections (info)) |
2542 | return FALSE; | |
252b5132 | 2543 | |
a7519a3c RH |
2544 | /* Allocate space for all of the .got subsections. */ |
2545 | i = alpha_elf_hash_table (info)->got_list; | |
2546 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2547 | { |
a7519a3c RH |
2548 | asection *s = alpha_elf_tdata(i)->got; |
2549 | if (s->size > 0) | |
2550 | { | |
2551 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2552 | if (s->contents == NULL) | |
2553 | return FALSE; | |
2554 | } | |
252b5132 RH |
2555 | } |
2556 | ||
b34976b6 | 2557 | return TRUE; |
252b5132 | 2558 | } |
3765b1be | 2559 | |
a7519a3c | 2560 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2561 | |
a7519a3c RH |
2562 | static int |
2563 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2564 | { | |
2565 | switch (r_type) | |
3765b1be | 2566 | { |
a7519a3c RH |
2567 | /* May appear in GOT entries. */ |
2568 | case R_ALPHA_TLSGD: | |
2569 | return (dynamic ? 2 : shared ? 1 : 0); | |
2570 | case R_ALPHA_TLSLDM: | |
2571 | return shared; | |
2572 | case R_ALPHA_LITERAL: | |
2573 | case R_ALPHA_GOTTPREL: | |
2574 | return dynamic || shared; | |
2575 | case R_ALPHA_GOTDTPREL: | |
2576 | return dynamic; | |
3765b1be | 2577 | |
a7519a3c RH |
2578 | /* May appear in data sections. */ |
2579 | case R_ALPHA_REFLONG: | |
2580 | case R_ALPHA_REFQUAD: | |
2581 | case R_ALPHA_TPREL64: | |
2582 | return dynamic || shared; | |
3765b1be | 2583 | |
a7519a3c RH |
2584 | /* Everything else is illegal. We'll issue an error during |
2585 | relocate_section. */ | |
2586 | default: | |
2587 | return 0; | |
2588 | } | |
2589 | } | |
3765b1be | 2590 | |
a7519a3c | 2591 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2592 | |
a7519a3c RH |
2593 | static bfd_boolean |
2594 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2595 | struct bfd_link_info *info) | |
2596 | { | |
2597 | bfd_boolean dynamic; | |
2598 | struct alpha_elf_reloc_entry *relent; | |
2599 | unsigned long entries; | |
3765b1be | 2600 | |
a7519a3c RH |
2601 | if (h->root.root.type == bfd_link_hash_warning) |
2602 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2603 | |
a7519a3c RH |
2604 | /* If the symbol was defined as a common symbol in a regular object |
2605 | file, and there was no definition in any dynamic object, then the | |
2606 | linker will have allocated space for the symbol in a common | |
2607 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2608 | set. This is done for dynamic symbols in | |
2609 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2610 | symbols, somehow. */ | |
2611 | if (!h->root.def_regular | |
2612 | && h->root.ref_regular | |
2613 | && !h->root.def_dynamic | |
2614 | && (h->root.root.type == bfd_link_hash_defined | |
2615 | || h->root.root.type == bfd_link_hash_defweak) | |
2616 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2617 | h->root.def_regular = 1; | |
3765b1be | 2618 | |
a7519a3c RH |
2619 | /* If the symbol is dynamic, we'll need all the relocations in their |
2620 | natural form. If this is a shared object, and it has been forced | |
2621 | local, we'll need the same number of RELATIVE relocations. */ | |
2622 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2623 | |
a7519a3c RH |
2624 | /* If the symbol is a hidden undefined weak, then we never have any |
2625 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2626 | based on info->shared. */ | |
2627 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2628 | return TRUE; | |
2629 | ||
2630 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2631 | { |
a7519a3c RH |
2632 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2633 | info->shared); | |
2634 | if (entries) | |
2635 | { | |
2636 | relent->srel->size += | |
2637 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2638 | if (relent->reltext) | |
2639 | info->flags |= DT_TEXTREL; | |
2640 | } | |
2641 | } | |
3765b1be | 2642 | |
a7519a3c RH |
2643 | return TRUE; |
2644 | } | |
3765b1be | 2645 | |
a7519a3c RH |
2646 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2647 | global symbols. */ | |
3765b1be | 2648 | |
a7519a3c RH |
2649 | static bfd_boolean |
2650 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2651 | struct bfd_link_info *info) | |
2652 | { | |
2653 | bfd_boolean dynamic; | |
2654 | struct alpha_elf_got_entry *gotent; | |
2655 | unsigned long entries; | |
3765b1be | 2656 | |
a7519a3c RH |
2657 | if (h->root.root.type == bfd_link_hash_warning) |
2658 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2659 | ||
2660 | /* If the symbol is dynamic, we'll need all the relocations in their | |
2661 | natural form. If this is a shared object, and it has been forced | |
2662 | local, we'll need the same number of RELATIVE relocations. */ | |
2663 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2664 | ||
2665 | /* If the symbol is a hidden undefined weak, then we never have any | |
2666 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2667 | based on info->shared. */ | |
2668 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2669 | return TRUE; | |
2670 | ||
2671 | entries = 0; | |
2672 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2673 | if (gotent->use_count > 0) | |
2674 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2675 | dynamic, info->shared); | |
2676 | ||
2677 | /* If we are using a .plt entry, subtract one, as the first | |
2678 | reference uses a .rela.plt entry instead. */ | |
2679 | if (h->root.plt.offset != MINUS_ONE) | |
2680 | entries--; | |
2681 | ||
2682 | if (entries > 0) | |
2683 | { | |
2684 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2685 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2686 | BFD_ASSERT (srel != NULL); | |
2687 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2688 | } |
3765b1be | 2689 | |
a7519a3c | 2690 | return TRUE; |
3765b1be RH |
2691 | } |
2692 | ||
a7519a3c | 2693 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2694 | |
b34976b6 | 2695 | static bfd_boolean |
a7519a3c | 2696 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2697 | { |
a7519a3c RH |
2698 | unsigned long entries; |
2699 | bfd *i, *dynobj; | |
2700 | asection *srel; | |
252b5132 | 2701 | |
a7519a3c RH |
2702 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2703 | require attention for the main application as well. */ | |
252b5132 | 2704 | |
a7519a3c RH |
2705 | entries = 0; |
2706 | for (i = alpha_elf_hash_table(info)->got_list; | |
2707 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2708 | { | |
2709 | bfd *j; | |
3241278a | 2710 | |
a7519a3c RH |
2711 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2712 | { | |
2713 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2714 | int k, n; | |
252b5132 | 2715 | |
a7519a3c RH |
2716 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2717 | if (!local_got_entries) | |
2718 | continue; | |
252b5132 | 2719 | |
a7519a3c RH |
2720 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2721 | for (gotent = local_got_entries[k]; | |
2722 | gotent ; gotent = gotent->next) | |
2723 | if (gotent->use_count > 0) | |
2724 | entries += (alpha_dynamic_entries_for_reloc | |
2725 | (gotent->reloc_type, 0, info->shared)); | |
2726 | } | |
2727 | } | |
3765b1be | 2728 | |
a7519a3c RH |
2729 | dynobj = elf_hash_table(info)->dynobj; |
2730 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2731 | if (!srel) | |
2732 | { | |
2733 | BFD_ASSERT (entries == 0); | |
2734 | return TRUE; | |
2735 | } | |
2736 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2737 | |
a7519a3c RH |
2738 | /* Now do the non-local symbols. */ |
2739 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2740 | elf64_alpha_size_rela_got_1, info); | |
252b5132 | 2741 | |
a7519a3c RH |
2742 | return TRUE; |
2743 | } | |
252b5132 | 2744 | |
a7519a3c | 2745 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2746 | |
a7519a3c RH |
2747 | static bfd_boolean |
2748 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2749 | struct bfd_link_info *info) | |
2750 | { | |
2751 | bfd *dynobj; | |
2752 | asection *s; | |
2753 | bfd_boolean relplt; | |
3765b1be | 2754 | |
a7519a3c RH |
2755 | dynobj = elf_hash_table(info)->dynobj; |
2756 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2757 | |
a7519a3c RH |
2758 | if (elf_hash_table (info)->dynamic_sections_created) |
2759 | { | |
2760 | /* Set the contents of the .interp section to the interpreter. */ | |
2761 | if (info->executable) | |
252b5132 | 2762 | { |
a7519a3c RH |
2763 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2764 | BFD_ASSERT (s != NULL); | |
2765 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2766 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2767 | } | |
3765b1be | 2768 | |
a7519a3c RH |
2769 | /* Now that we've seen all of the input files, we can decide which |
2770 | symbols need dynamic relocation entries and which don't. We've | |
2771 | collected information in check_relocs that we can now apply to | |
2772 | size the dynamic relocation sections. */ | |
2773 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2774 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2775 | |
a7519a3c RH |
2776 | elf64_alpha_size_rela_got_section (info); |
2777 | } | |
2778 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2779 | |
a7519a3c RH |
2780 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2781 | determined the sizes of the various dynamic sections. Allocate | |
2782 | memory for them. */ | |
2783 | relplt = FALSE; | |
2784 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2785 | { | |
2786 | const char *name; | |
2787 | bfd_boolean strip; | |
3765b1be | 2788 | |
a7519a3c RH |
2789 | if (!(s->flags & SEC_LINKER_CREATED)) |
2790 | continue; | |
cc03ec80 | 2791 | |
a7519a3c RH |
2792 | /* It's OK to base decisions on the section name, because none |
2793 | of the dynobj section names depend upon the input files. */ | |
2794 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2795 | |
a7519a3c RH |
2796 | /* If we don't need this section, strip it from the output file. |
2797 | This is to handle .rela.bss and .rela.plt. We must create it | |
2798 | in create_dynamic_sections, because it must be created before | |
2799 | the linker maps input sections to output sections. The | |
2800 | linker does that before adjust_dynamic_symbol is called, and | |
2801 | it is that function which decides whether anything needs to | |
2802 | go into these sections. */ | |
3765b1be | 2803 | |
a7519a3c | 2804 | strip = FALSE; |
3765b1be | 2805 | |
a7519a3c | 2806 | if (strncmp (name, ".rela", 5) == 0) |
3765b1be | 2807 | { |
a7519a3c | 2808 | strip = (s->size == 0); |
252b5132 | 2809 | |
a7519a3c RH |
2810 | if (!strip) |
2811 | { | |
2812 | if (strcmp(name, ".rela.plt") == 0) | |
2813 | relplt = TRUE; | |
252b5132 | 2814 | |
a7519a3c RH |
2815 | /* We use the reloc_count field as a counter if we need |
2816 | to copy relocs into the output file. */ | |
2817 | s->reloc_count = 0; | |
252b5132 | 2818 | } |
3765b1be | 2819 | } |
a7519a3c | 2820 | else if (strcmp (name, ".plt") != 0) |
3765b1be | 2821 | { |
a7519a3c RH |
2822 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2823 | continue; | |
2824 | } | |
252b5132 | 2825 | |
a7519a3c RH |
2826 | if (strip) |
2827 | s->flags |= SEC_EXCLUDE; | |
2828 | else | |
2829 | { | |
2830 | /* Allocate memory for the section contents. */ | |
2831 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2832 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 2833 | return FALSE; |
a7519a3c RH |
2834 | } |
2835 | } | |
3765b1be | 2836 | |
a7519a3c RH |
2837 | if (elf_hash_table (info)->dynamic_sections_created) |
2838 | { | |
2839 | /* Add some entries to the .dynamic section. We fill in the | |
2840 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2841 | must add the entries now so that we get the correct size for | |
2842 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2843 | dynamic linker and used by the debugger. */ | |
2844 | #define add_dynamic_entry(TAG, VAL) \ | |
2845 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2846 | |
a7519a3c RH |
2847 | if (info->executable) |
2848 | { | |
2849 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2850 | return FALSE; | |
3765b1be RH |
2851 | } |
2852 | ||
a7519a3c | 2853 | if (relplt) |
3765b1be | 2854 | { |
a7519a3c RH |
2855 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2856 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2857 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2858 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2859 | return FALSE; | |
2860 | } | |
252b5132 | 2861 | |
a7519a3c RH |
2862 | if (!add_dynamic_entry (DT_RELA, 0) |
2863 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2864 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2865 | return FALSE; | |
2866 | ||
2867 | if (info->flags & DF_TEXTREL) | |
2868 | { | |
2869 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2870 | return FALSE; | |
252b5132 RH |
2871 | } |
2872 | } | |
a7519a3c | 2873 | #undef add_dynamic_entry |
252b5132 | 2874 | |
b34976b6 | 2875 | return TRUE; |
252b5132 | 2876 | } |
a7519a3c RH |
2877 | \f |
2878 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2879 | |
a7519a3c RH |
2880 | Currently I'm only handling what I can do with existing compiler |
2881 | and assembler support, which means no instructions are removed, | |
2882 | though some may be nopped. At this time GCC does not emit enough | |
2883 | information to do all of the relaxing that is possible. It will | |
2884 | take some not small amount of work for that to happen. | |
252b5132 | 2885 | |
a7519a3c RH |
2886 | There are a couple of interesting papers that I once read on this |
2887 | subject, that I cannot find references to at the moment, that | |
2888 | related to Alpha in particular. They are by David Wall, then of | |
2889 | DEC WRL. */ | |
252b5132 | 2890 | |
a7519a3c RH |
2891 | #define OP_LDA 0x08 |
2892 | #define OP_LDAH 0x09 | |
2893 | #define INSN_JSR 0x68004000 | |
2894 | #define INSN_JSR_MASK 0xfc00c000 | |
2895 | #define OP_LDQ 0x29 | |
2896 | #define OP_BR 0x30 | |
2897 | #define OP_BSR 0x34 | |
2898 | #define INSN_UNOP 0x2ffe0000 | |
2899 | #define INSN_ADDQ 0x40000400 | |
2900 | #define INSN_RDUNIQ 0x0000009e | |
252b5132 | 2901 | |
a7519a3c RH |
2902 | struct alpha_relax_info |
2903 | { | |
2904 | bfd *abfd; | |
2905 | asection *sec; | |
2906 | bfd_byte *contents; | |
2907 | Elf_Internal_Shdr *symtab_hdr; | |
2908 | Elf_Internal_Rela *relocs, *relend; | |
2909 | struct bfd_link_info *link_info; | |
2910 | bfd_vma gp; | |
2911 | bfd *gotobj; | |
2912 | asection *tsec; | |
2913 | struct alpha_elf_link_hash_entry *h; | |
2914 | struct alpha_elf_got_entry **first_gotent; | |
2915 | struct alpha_elf_got_entry *gotent; | |
2916 | bfd_boolean changed_contents; | |
2917 | bfd_boolean changed_relocs; | |
2918 | unsigned char other; | |
2919 | }; | |
252b5132 | 2920 | |
a7519a3c RH |
2921 | static Elf_Internal_Rela * |
2922 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2923 | Elf_Internal_Rela *relend, | |
2924 | bfd_vma offset, int type) | |
2925 | { | |
2926 | while (rel < relend) | |
252b5132 | 2927 | { |
a7519a3c RH |
2928 | if (rel->r_offset == offset |
2929 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2930 | return rel; | |
2931 | ++rel; | |
2932 | } | |
2933 | return NULL; | |
2934 | } | |
252b5132 | 2935 | |
a7519a3c RH |
2936 | static bfd_boolean |
2937 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2938 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2939 | { | |
2940 | unsigned int insn; | |
2941 | bfd_signed_vma disp; | |
252b5132 | 2942 | |
a7519a3c RH |
2943 | /* Get the instruction. */ |
2944 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2945 | |
a7519a3c RH |
2946 | if (insn >> 26 != OP_LDQ) |
2947 | { | |
2948 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2949 | ((*_bfd_error_handler) | |
2950 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2951 | info->abfd, info->sec, | |
2952 | (unsigned long) irel->r_offset, howto->name)); | |
2953 | return TRUE; | |
2954 | } | |
252b5132 | 2955 | |
a7519a3c RH |
2956 | /* Can't relax dynamic symbols. */ |
2957 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2958 | return TRUE; | |
252b5132 | 2959 | |
a7519a3c RH |
2960 | /* Can't use local-exec relocations in shared libraries. */ |
2961 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2962 | return TRUE; | |
252b5132 | 2963 | |
a7519a3c RH |
2964 | if (r_type == R_ALPHA_LITERAL) |
2965 | { | |
2966 | /* Look for nice constant addresses. This includes the not-uncommon | |
2967 | special case of 0 for undefweak symbols. */ | |
2968 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2969 | || (!info->link_info->shared | |
2970 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2971 | { | |
2972 | disp = 0; | |
2973 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2974 | insn |= (symval & 0xffff); | |
2975 | r_type = R_ALPHA_NONE; | |
2976 | } | |
2977 | else | |
2978 | { | |
2979 | disp = symval - info->gp; | |
2980 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2981 | r_type = R_ALPHA_GPREL16; | |
2982 | } | |
252b5132 RH |
2983 | } |
2984 | else | |
252b5132 | 2985 | { |
a7519a3c | 2986 | bfd_vma dtp_base, tp_base; |
252b5132 | 2987 | |
a7519a3c RH |
2988 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2989 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2990 | tp_base = alpha_get_tprel_base (info->link_info); | |
2991 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2992 | |
a7519a3c | 2993 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2994 | |
a7519a3c RH |
2995 | switch (r_type) |
2996 | { | |
2997 | case R_ALPHA_GOTDTPREL: | |
2998 | r_type = R_ALPHA_DTPREL16; | |
2999 | break; | |
3000 | case R_ALPHA_GOTTPREL: | |
3001 | r_type = R_ALPHA_TPREL16; | |
3002 | break; | |
3003 | default: | |
3004 | BFD_ASSERT (0); | |
3005 | return FALSE; | |
3006 | } | |
3007 | } | |
252b5132 | 3008 | |
a7519a3c | 3009 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3010 | return TRUE; |
252b5132 | 3011 | |
a7519a3c RH |
3012 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3013 | info->changed_contents = TRUE; | |
252b5132 | 3014 | |
a7519a3c RH |
3015 | /* Reduce the use count on this got entry by one, possibly |
3016 | eliminating it. */ | |
3017 | if (--info->gotent->use_count == 0) | |
252b5132 | 3018 | { |
a7519a3c RH |
3019 | int sz = alpha_got_entry_size (r_type); |
3020 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3021 | if (!info->h) | |
3022 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3023 | } |
252b5132 | 3024 | |
a7519a3c RH |
3025 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3026 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3027 | info->changed_relocs = TRUE; | |
3028 | ||
3029 | /* ??? Search forward through this basic block looking for insns | |
3030 | that use the target register. Stop after an insn modifying the | |
3031 | register is seen, or after a branch or call. | |
252b5132 | 3032 | |
a7519a3c RH |
3033 | Any such memory load insn may be substituted by a load directly |
3034 | off the GP. This allows the memory load insn to be issued before | |
3035 | the calculated GP register would otherwise be ready. | |
252b5132 | 3036 | |
a7519a3c RH |
3037 | Any such jsr insn can be replaced by a bsr if it is in range. |
3038 | ||
3039 | This would mean that we'd have to _add_ relocations, the pain of | |
3040 | which gives one pause. */ | |
252b5132 | 3041 | |
b34976b6 | 3042 | return TRUE; |
252b5132 RH |
3043 | } |
3044 | ||
a7519a3c RH |
3045 | static bfd_vma |
3046 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3047 | { |
a7519a3c RH |
3048 | /* If the function has the same gp, and we can identify that the |
3049 | function does not use its function pointer, we can eliminate the | |
3050 | address load. */ | |
252b5132 | 3051 | |
a7519a3c RH |
3052 | /* If the symbol is marked NOPV, we are being told the function never |
3053 | needs its procedure value. */ | |
3054 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3055 | return symval; | |
252b5132 | 3056 | |
a7519a3c RH |
3057 | /* If the symbol is marked STD_GP, we are being told the function does |
3058 | a normal ldgp in the first two words. */ | |
3059 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3060 | ; | |
252b5132 | 3061 | |
a7519a3c RH |
3062 | /* Otherwise, we may be able to identify a GP load in the first two |
3063 | words, which we can then skip. */ | |
3064 | else | |
252b5132 | 3065 | { |
a7519a3c RH |
3066 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3067 | bfd_vma ofs; | |
252b5132 | 3068 | |
a7519a3c RH |
3069 | /* Load the relocations from the section that the target symbol is in. */ |
3070 | if (info->sec == info->tsec) | |
252b5132 | 3071 | { |
a7519a3c RH |
3072 | tsec_relocs = info->relocs; |
3073 | tsec_relend = info->relend; | |
3074 | tsec_free = NULL; | |
3075 | } | |
3076 | else | |
3077 | { | |
3078 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3079 | (info->abfd, info->tsec, (PTR) NULL, | |
3080 | (Elf_Internal_Rela *) NULL, | |
3081 | info->link_info->keep_memory)); | |
3082 | if (tsec_relocs == NULL) | |
3083 | return 0; | |
3084 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3085 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3086 | } | |
252b5132 | 3087 | |
a7519a3c RH |
3088 | /* Recover the symbol's offset within the section. */ |
3089 | ofs = (symval - info->tsec->output_section->vma | |
3090 | - info->tsec->output_offset); | |
252b5132 | 3091 | |
a7519a3c RH |
3092 | /* Look for a GPDISP reloc. */ |
3093 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3094 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3095 | |
a7519a3c RH |
3096 | if (!gpdisp || gpdisp->r_addend != 4) |
3097 | { | |
3098 | if (tsec_free) | |
3099 | free (tsec_free); | |
3100 | return 0; | |
252b5132 | 3101 | } |
a7519a3c RH |
3102 | if (tsec_free) |
3103 | free (tsec_free); | |
252b5132 RH |
3104 | } |
3105 | ||
a7519a3c RH |
3106 | /* We've now determined that we can skip an initial gp load. Verify |
3107 | that the call and the target use the same gp. */ | |
3108 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
3109 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
3110 | return 0; | |
252b5132 | 3111 | |
a7519a3c RH |
3112 | return symval + 8; |
3113 | } | |
252b5132 | 3114 | |
a7519a3c RH |
3115 | static bfd_boolean |
3116 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3117 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3118 | { |
a7519a3c RH |
3119 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3120 | int flags, count, i; | |
3121 | bfd_signed_vma disp; | |
3122 | bfd_boolean fits16; | |
3123 | bfd_boolean fits32; | |
3124 | bfd_boolean lit_reused = FALSE; | |
3125 | bfd_boolean all_optimized = TRUE; | |
3126 | unsigned int lit_insn; | |
252b5132 | 3127 | |
a7519a3c RH |
3128 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3129 | if (lit_insn >> 26 != OP_LDQ) | |
3130 | { | |
3131 | ((*_bfd_error_handler) | |
3132 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3133 | info->abfd, info->sec, | |
3134 | (unsigned long) irel->r_offset)); | |
3135 | return TRUE; | |
3136 | } | |
252b5132 | 3137 | |
a7519a3c RH |
3138 | /* Can't relax dynamic symbols. */ |
3139 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3140 | return TRUE; | |
3141 | ||
3142 | /* Summarize how this particular LITERAL is used. */ | |
3143 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3144 | { |
a7519a3c RH |
3145 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3146 | break; | |
3147 | if (urel->r_addend <= 3) | |
3148 | flags |= 1 << urel->r_addend; | |
3149 | } | |
252b5132 | 3150 | |
a7519a3c RH |
3151 | /* A little preparation for the loop... */ |
3152 | disp = symval - info->gp; | |
252b5132 | 3153 | |
a7519a3c RH |
3154 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3155 | { | |
3156 | unsigned int insn; | |
3157 | int insn_disp; | |
3158 | bfd_signed_vma xdisp; | |
252b5132 | 3159 | |
a7519a3c | 3160 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3161 | |
a7519a3c RH |
3162 | switch (urel->r_addend) |
3163 | { | |
3164 | case LITUSE_ALPHA_ADDR: | |
3165 | default: | |
3166 | /* This type is really just a placeholder to note that all | |
3167 | uses cannot be optimized, but to still allow some. */ | |
3168 | all_optimized = FALSE; | |
3169 | break; | |
252b5132 | 3170 | |
a7519a3c RH |
3171 | case LITUSE_ALPHA_BASE: |
3172 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3173 | |
a7519a3c RH |
3174 | /* Extract the displacement from the instruction, sign-extending |
3175 | it if necessary, then test whether it is within 16 or 32 bits | |
3176 | displacement from GP. */ | |
3177 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3178 | ||
3179 | xdisp = disp + insn_disp; | |
3180 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3181 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3182 | && xdisp < 0x7fff8000); | |
3183 | ||
3184 | if (fits16) | |
3185 | { | |
3186 | /* Take the op code and dest from this insn, take the base | |
3187 | register from the literal insn. Leave the offset alone. */ | |
3188 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3189 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3190 | R_ALPHA_GPREL16); | |
3191 | urel->r_addend = irel->r_addend; | |
3192 | info->changed_relocs = TRUE; | |
252b5132 | 3193 | |
a7519a3c RH |
3194 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3195 | info->contents + urel->r_offset); | |
3196 | info->changed_contents = TRUE; | |
252b5132 | 3197 | } |
252b5132 | 3198 | |
a7519a3c RH |
3199 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3200 | else if (fits32 && !(flags & ~6)) | |
3201 | { | |
3202 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3203 | |
a7519a3c RH |
3204 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3205 | R_ALPHA_GPRELHIGH); | |
3206 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3207 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3208 | info->contents + irel->r_offset); | |
3209 | lit_reused = TRUE; | |
3210 | info->changed_contents = TRUE; | |
252b5132 | 3211 | |
a7519a3c RH |
3212 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3213 | R_ALPHA_GPRELLOW); | |
3214 | urel->r_addend = irel->r_addend; | |
3215 | info->changed_relocs = TRUE; | |
3216 | } | |
3217 | else | |
3218 | all_optimized = FALSE; | |
3219 | break; | |
252b5132 | 3220 | |
a7519a3c RH |
3221 | case LITUSE_ALPHA_BYTOFF: |
3222 | /* We can always optimize byte instructions. */ | |
252b5132 | 3223 | |
a7519a3c RH |
3224 | /* FIXME: sanity check the insn for byte op. Check that the |
3225 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3226 | |
a7519a3c RH |
3227 | insn &= ~ (unsigned) 0x001ff000; |
3228 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3229 | |
a7519a3c RH |
3230 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3231 | urel->r_addend = 0; | |
3232 | info->changed_relocs = TRUE; | |
e92d460e | 3233 | |
a7519a3c RH |
3234 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3235 | info->contents + urel->r_offset); | |
3236 | info->changed_contents = TRUE; | |
3237 | break; | |
252b5132 | 3238 | |
a7519a3c RH |
3239 | case LITUSE_ALPHA_JSR: |
3240 | case LITUSE_ALPHA_TLSGD: | |
3241 | case LITUSE_ALPHA_TLSLDM: | |
0d5f9994 | 3242 | { |
a7519a3c RH |
3243 | bfd_vma optdest, org; |
3244 | bfd_signed_vma odisp; | |
252b5132 | 3245 | |
a7519a3c RH |
3246 | /* For undefined weak symbols, we're mostly interested in getting |
3247 | rid of the got entry whenever possible, so optimize this to a | |
3248 | use of the zero register. */ | |
3249 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3250 | { | |
3251 | insn |= 31 << 16; | |
3252 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3253 | info->contents + urel->r_offset); | |
252b5132 | 3254 | |
a7519a3c RH |
3255 | info->changed_contents = TRUE; |
3256 | break; | |
3257 | } | |
252b5132 | 3258 | |
a7519a3c RH |
3259 | /* If not zero, place to jump without needing pv. */ |
3260 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3261 | org = (info->sec->output_section->vma | |
3262 | + info->sec->output_offset | |
3263 | + urel->r_offset + 4); | |
3264 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3265 | |
a7519a3c RH |
3266 | if (odisp >= -0x400000 && odisp < 0x400000) |
3267 | { | |
3268 | Elf_Internal_Rela *xrel; | |
252b5132 | 3269 | |
a7519a3c RH |
3270 | /* Preserve branch prediction call stack when possible. */ |
3271 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3272 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3273 | else | |
3274 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3275 | |
a7519a3c RH |
3276 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3277 | R_ALPHA_BRADDR); | |
3278 | urel->r_addend = irel->r_addend; | |
252b5132 | 3279 | |
a7519a3c RH |
3280 | if (optdest) |
3281 | urel->r_addend += optdest - symval; | |
3282 | else | |
3283 | all_optimized = FALSE; | |
252b5132 | 3284 | |
a7519a3c RH |
3285 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3286 | info->contents + urel->r_offset); | |
252b5132 | 3287 | |
a7519a3c RH |
3288 | /* Kill any HINT reloc that might exist for this insn. */ |
3289 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3290 | (info->relocs, info->relend, urel->r_offset, | |
3291 | R_ALPHA_HINT)); | |
3292 | if (xrel) | |
3293 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3294 | |
a7519a3c RH |
3295 | info->changed_contents = TRUE; |
3296 | info->changed_relocs = TRUE; | |
3297 | } | |
3298 | else | |
3299 | all_optimized = FALSE; | |
252b5132 | 3300 | |
a7519a3c RH |
3301 | /* Even if the target is not in range for a direct branch, |
3302 | if we share a GP, we can eliminate the gp reload. */ | |
3303 | if (optdest) | |
3304 | { | |
3305 | Elf_Internal_Rela *gpdisp | |
3306 | = (elf64_alpha_find_reloc_at_ofs | |
3307 | (info->relocs, irelend, urel->r_offset + 4, | |
3308 | R_ALPHA_GPDISP)); | |
3309 | if (gpdisp) | |
3310 | { | |
3311 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3312 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3313 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3314 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3315 | |
a7519a3c RH |
3316 | /* Verify that the instruction is "ldah $29,0($26)". |
3317 | Consider a function that ends in a noreturn call, | |
3318 | and that the next function begins with an ldgp, | |
3319 | and that by accident there is no padding between. | |
3320 | In that case the insn would use $27 as the base. */ | |
3321 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3322 | { | |
3323 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3324 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3325 | |
a7519a3c RH |
3326 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3327 | info->changed_contents = TRUE; | |
3328 | info->changed_relocs = TRUE; | |
3329 | } | |
3330 | } | |
3331 | } | |
3332 | } | |
3333 | break; | |
252b5132 | 3334 | } |
252b5132 RH |
3335 | } |
3336 | ||
a7519a3c RH |
3337 | /* If all cases were optimized, we can reduce the use count on this |
3338 | got entry by one, possibly eliminating it. */ | |
3339 | if (all_optimized) | |
252b5132 | 3340 | { |
a7519a3c | 3341 | if (--info->gotent->use_count == 0) |
252b5132 | 3342 | { |
a7519a3c RH |
3343 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3344 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3345 | if (!info->h) | |
3346 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3347 | } |
a7519a3c RH |
3348 | |
3349 | /* If the literal instruction is no longer needed (it may have been | |
3350 | reused. We can eliminate it. */ | |
3351 | /* ??? For now, I don't want to deal with compacting the section, | |
3352 | so just nop it out. */ | |
3353 | if (!lit_reused) | |
252b5132 | 3354 | { |
a7519a3c RH |
3355 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3356 | info->changed_relocs = TRUE; | |
252b5132 | 3357 | |
a7519a3c RH |
3358 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3359 | info->contents + irel->r_offset); | |
3360 | info->changed_contents = TRUE; | |
3361 | } | |
252b5132 | 3362 | |
a7519a3c RH |
3363 | return TRUE; |
3364 | } | |
3365 | else | |
3366 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3367 | } |
3368 | ||
b34976b6 | 3369 | static bfd_boolean |
a7519a3c RH |
3370 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3371 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3372 | { |
a7519a3c RH |
3373 | bfd_byte *pos[5]; |
3374 | unsigned int insn; | |
3375 | Elf_Internal_Rela *gpdisp, *hint; | |
3376 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3377 | unsigned long new_symndx; | |
f44f99a5 | 3378 | |
a7519a3c | 3379 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3380 | |
a7519a3c RH |
3381 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3382 | to use dynamic model for it. */ | |
3383 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3384 | ; | |
f44f99a5 | 3385 | |
a7519a3c RH |
3386 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3387 | then we might as well relax to IE. */ | |
3388 | else if (info->link_info->shared && !dynamic | |
3389 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3390 | ; | |
f44f99a5 | 3391 | |
a7519a3c RH |
3392 | /* Otherwise we must be building an executable to do anything. */ |
3393 | else if (info->link_info->shared) | |
3394 | return TRUE; | |
f44f99a5 | 3395 | |
a7519a3c RH |
3396 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3397 | the matching LITUSE_TLS relocations. */ | |
3398 | if (irel + 2 >= info->relend) | |
3399 | return TRUE; | |
3400 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3401 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3402 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3403 | return TRUE; | |
f44f99a5 | 3404 | |
a7519a3c RH |
3405 | /* There must be a GPDISP relocation positioned immediately after the |
3406 | LITUSE relocation. */ | |
3407 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3408 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3409 | if (!gpdisp) | |
b34976b6 | 3410 | return TRUE; |
f44f99a5 | 3411 | |
a7519a3c RH |
3412 | pos[0] = info->contents + irel[0].r_offset; |
3413 | pos[1] = info->contents + irel[1].r_offset; | |
3414 | pos[2] = info->contents + irel[2].r_offset; | |
3415 | pos[3] = info->contents + gpdisp->r_offset; | |
3416 | pos[4] = pos[3] + gpdisp->r_addend; | |
3417 | pos1_unusable = FALSE; | |
f44f99a5 | 3418 | |
a7519a3c RH |
3419 | /* Generally, the positions are not allowed to be out of order, lest the |
3420 | modified insn sequence have different register lifetimes. We can make | |
3421 | an exception when pos 1 is adjacent to pos 0. */ | |
3422 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3423 | { |
a7519a3c RH |
3424 | bfd_byte *tmp = pos[0]; |
3425 | pos[0] = pos[1]; | |
3426 | pos[1] = tmp; | |
f44f99a5 | 3427 | } |
a7519a3c RH |
3428 | else if (pos[1] < pos[0]) |
3429 | pos1_unusable = TRUE; | |
3430 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3431 | return TRUE; | |
cc03ec80 | 3432 | |
a7519a3c RH |
3433 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3434 | smash the symndx when we adjust the relocations below. */ | |
3435 | { | |
3436 | struct alpha_elf_got_entry *lit_gotent; | |
3437 | struct alpha_elf_link_hash_entry *lit_h; | |
3438 | unsigned long indx; | |
f44f99a5 | 3439 | |
a7519a3c RH |
3440 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3441 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3442 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3443 | |
a7519a3c RH |
3444 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3445 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3446 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3447 | |
a7519a3c RH |
3448 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3449 | lit_gotent = lit_gotent->next) | |
3450 | if (lit_gotent->gotobj == info->gotobj | |
3451 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3452 | && lit_gotent->addend == irel[1].r_addend) | |
3453 | break; | |
3454 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3455 | |
a7519a3c RH |
3456 | if (--lit_gotent->use_count == 0) |
3457 | { | |
3458 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3459 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3460 | } | |
3461 | } | |
252b5132 | 3462 | |
a7519a3c | 3463 | /* Change |
252b5132 | 3464 | |
a7519a3c RH |
3465 | lda $16,x($gp) !tlsgd!1 |
3466 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3467 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3468 | ldah $29,0($26) !gpdisp!2 | |
3469 | lda $29,0($29) !gpdisp!2 | |
3470 | to | |
3471 | ldq $16,x($gp) !gottprel | |
3472 | unop | |
3473 | call_pal rduniq | |
3474 | addq $16,$0,$0 | |
3475 | unop | |
3476 | or the first pair to | |
3477 | lda $16,x($gp) !tprel | |
3478 | unop | |
3479 | or | |
3480 | ldah $16,x($gp) !tprelhi | |
3481 | lda $16,x($16) !tprello | |
3482 | ||
3483 | as appropriate. */ | |
3484 | ||
3485 | use_gottprel = FALSE; | |
3486 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3487 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3488 | { |
a7519a3c RH |
3489 | case 1: |
3490 | { | |
3491 | bfd_vma tp_base; | |
3492 | bfd_signed_vma disp; | |
252b5132 | 3493 | |
a7519a3c RH |
3494 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3495 | tp_base = alpha_get_tprel_base (info->link_info); | |
3496 | disp = symval - tp_base; | |
252b5132 | 3497 | |
a7519a3c RH |
3498 | if (disp >= -0x8000 && disp < 0x8000) |
3499 | { | |
3500 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3501 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3502 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3503 | |
a7519a3c RH |
3504 | irel[0].r_offset = pos[0] - info->contents; |
3505 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3506 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3507 | break; | |
3508 | } | |
3509 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3510 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3511 | && !pos1_unusable) | |
3512 | { | |
3513 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3514 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3515 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3516 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3517 | |
a7519a3c RH |
3518 | irel[0].r_offset = pos[0] - info->contents; |
3519 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3520 | irel[1].r_offset = pos[1] - info->contents; | |
3521 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3522 | break; | |
3523 | } | |
3524 | } | |
3525 | /* FALLTHRU */ | |
3765b1be | 3526 | |
3765b1be | 3527 | default: |
a7519a3c RH |
3528 | use_gottprel = TRUE; |
3529 | ||
3530 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3531 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3532 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3533 | ||
3534 | irel[0].r_offset = pos[0] - info->contents; | |
3535 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3536 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3537 | break; | |
3765b1be | 3538 | } |
3765b1be | 3539 | |
a7519a3c | 3540 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3541 | |
a7519a3c RH |
3542 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3543 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3544 | |
a7519a3c | 3545 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3546 | |
a7519a3c RH |
3547 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3548 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3549 | |
a7519a3c RH |
3550 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3551 | irel[2].r_offset, R_ALPHA_HINT); | |
3552 | if (hint) | |
3553 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3554 | |
a7519a3c RH |
3555 | info->changed_contents = TRUE; |
3556 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3557 | |
a7519a3c RH |
3558 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3559 | if (--info->gotent->use_count == 0) | |
3765b1be | 3560 | { |
a7519a3c RH |
3561 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3562 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3563 | if (!info->h) | |
3564 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3565 | } |
252b5132 | 3566 | |
a7519a3c RH |
3567 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3568 | count on that got entry. */ | |
3569 | if (use_gottprel) | |
f44f99a5 | 3570 | { |
a7519a3c | 3571 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3572 | |
a7519a3c RH |
3573 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3574 | tprel_gotent = tprel_gotent->next) | |
3575 | if (tprel_gotent->gotobj == info->gotobj | |
3576 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3577 | && tprel_gotent->addend == irel->r_addend) | |
3578 | break; | |
3579 | if (tprel_gotent) | |
3580 | tprel_gotent->use_count++; | |
3581 | else | |
f44f99a5 | 3582 | { |
a7519a3c RH |
3583 | if (info->gotent->use_count == 0) |
3584 | tprel_gotent = info->gotent; | |
3585 | else | |
3586 | { | |
3587 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3588 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3589 | if (!tprel_gotent) | |
3590 | return FALSE; | |
f44f99a5 | 3591 | |
a7519a3c RH |
3592 | tprel_gotent->next = *info->first_gotent; |
3593 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3594 | |
a7519a3c RH |
3595 | tprel_gotent->gotobj = info->gotobj; |
3596 | tprel_gotent->addend = irel->r_addend; | |
3597 | tprel_gotent->got_offset = -1; | |
3598 | tprel_gotent->reloc_done = 0; | |
3599 | tprel_gotent->reloc_xlated = 0; | |
3600 | } | |
f44f99a5 | 3601 | |
a7519a3c RH |
3602 | tprel_gotent->use_count = 1; |
3603 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3604 | } | |
f44f99a5 | 3605 | } |
f44f99a5 | 3606 | |
b34976b6 | 3607 | return TRUE; |
f44f99a5 RH |
3608 | } |
3609 | ||
b34976b6 | 3610 | static bfd_boolean |
a7519a3c RH |
3611 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3612 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3613 | { |
a7519a3c RH |
3614 | Elf_Internal_Shdr *symtab_hdr; |
3615 | Elf_Internal_Rela *internal_relocs; | |
3616 | Elf_Internal_Rela *irel, *irelend; | |
3617 | Elf_Internal_Sym *isymbuf = NULL; | |
3618 | struct alpha_elf_got_entry **local_got_entries; | |
3619 | struct alpha_relax_info info; | |
f44f99a5 | 3620 | |
a7519a3c RH |
3621 | /* We are not currently changing any sizes, so only one pass. */ |
3622 | *again = FALSE; | |
f44f99a5 | 3623 | |
a7519a3c RH |
3624 | if (link_info->relocatable |
3625 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3626 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3627 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3628 | return TRUE; |
3629 | ||
a7519a3c RH |
3630 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3631 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
252b5132 | 3632 | |
a7519a3c RH |
3633 | /* Load the relocations for this section. */ |
3634 | internal_relocs = (_bfd_elf_link_read_relocs | |
3635 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3636 | link_info->keep_memory)); | |
3637 | if (internal_relocs == NULL) | |
3638 | return FALSE; | |
252b5132 | 3639 | |
a7519a3c RH |
3640 | memset(&info, 0, sizeof (info)); |
3641 | info.abfd = abfd; | |
3642 | info.sec = sec; | |
3643 | info.link_info = link_info; | |
3644 | info.symtab_hdr = symtab_hdr; | |
3645 | info.relocs = internal_relocs; | |
3646 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3647 | ||
3648 | /* Find the GP for this object. Do not store the result back via | |
3649 | _bfd_set_gp_value, since this could change again before final. */ | |
3650 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3651 | if (info.gotobj) | |
3765b1be | 3652 | { |
a7519a3c RH |
3653 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3654 | info.gp = (sgot->output_section->vma | |
3655 | + sgot->output_offset | |
3656 | + 0x8000); | |
252b5132 RH |
3657 | } |
3658 | ||
a7519a3c RH |
3659 | /* Get the section contents. */ |
3660 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3661 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3662 | else | |
3663 | { | |
3664 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3665 | goto error_return; | |
3666 | } | |
252b5132 | 3667 | |
a7519a3c RH |
3668 | for (irel = internal_relocs; irel < irelend; irel++) |
3669 | { | |
3670 | bfd_vma symval; | |
3671 | struct alpha_elf_got_entry *gotent; | |
3672 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3673 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3674 | ||
3675 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3676 | switch (r_type) | |
3677 | { | |
3678 | case R_ALPHA_LITERAL: | |
3679 | case R_ALPHA_GPRELHIGH: | |
3680 | case R_ALPHA_GPRELLOW: | |
3681 | case R_ALPHA_GOTDTPREL: | |
3682 | case R_ALPHA_GOTTPREL: | |
3683 | case R_ALPHA_TLSGD: | |
3684 | break; | |
3685 | ||
3686 | case R_ALPHA_TLSLDM: | |
3687 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3688 | reloc to the 0 symbol so that they all match. */ | |
3689 | r_symndx = 0; | |
3690 | break; | |
3691 | ||
3692 | default: | |
3693 | continue; | |
3694 | } | |
3695 | ||
3696 | /* Get the value of the symbol referred to by the reloc. */ | |
3697 | if (r_symndx < symtab_hdr->sh_info) | |
3698 | { | |
3699 | /* A local symbol. */ | |
3700 | Elf_Internal_Sym *isym; | |
3701 | ||
3702 | /* Read this BFD's local symbols. */ | |
3703 | if (isymbuf == NULL) | |
3704 | { | |
3705 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3706 | if (isymbuf == NULL) | |
3707 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3708 | symtab_hdr->sh_info, 0, | |
3709 | NULL, NULL, NULL); | |
3710 | if (isymbuf == NULL) | |
3711 | goto error_return; | |
3712 | } | |
252b5132 | 3713 | |
a7519a3c | 3714 | isym = isymbuf + r_symndx; |
252b5132 | 3715 | |
a7519a3c RH |
3716 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3717 | means forcing the symbol value to the tp base. */ | |
3718 | if (r_type == R_ALPHA_TLSLDM) | |
3719 | { | |
3720 | info.tsec = bfd_abs_section_ptr; | |
3721 | symval = alpha_get_tprel_base (info.link_info); | |
3722 | } | |
3723 | else | |
3724 | { | |
3725 | symval = isym->st_value; | |
3726 | if (isym->st_shndx == SHN_UNDEF) | |
3727 | continue; | |
3728 | else if (isym->st_shndx == SHN_ABS) | |
3729 | info.tsec = bfd_abs_section_ptr; | |
3730 | else if (isym->st_shndx == SHN_COMMON) | |
3731 | info.tsec = bfd_com_section_ptr; | |
3732 | else | |
3733 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3734 | } | |
252b5132 | 3735 | |
a7519a3c RH |
3736 | info.h = NULL; |
3737 | info.other = isym->st_other; | |
3738 | if (local_got_entries) | |
3739 | info.first_gotent = &local_got_entries[r_symndx]; | |
3740 | else | |
3741 | { | |
3742 | info.first_gotent = &info.gotent; | |
3743 | info.gotent = NULL; | |
3744 | } | |
252b5132 | 3745 | } |
a7519a3c RH |
3746 | else |
3747 | { | |
3748 | unsigned long indx; | |
3749 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3750 | |
a7519a3c RH |
3751 | indx = r_symndx - symtab_hdr->sh_info; |
3752 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3753 | BFD_ASSERT (h != NULL); | |
252b5132 | 3754 | |
a7519a3c RH |
3755 | while (h->root.root.type == bfd_link_hash_indirect |
3756 | || h->root.root.type == bfd_link_hash_warning) | |
3757 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3758 | |
a7519a3c RH |
3759 | /* If the symbol is undefined, we can't do anything with it. */ |
3760 | if (h->root.root.type == bfd_link_hash_undefined) | |
3761 | continue; | |
252b5132 | 3762 | |
a7519a3c RH |
3763 | /* If the symbol isn't defined in the current module, |
3764 | again we can't do anything. */ | |
3765 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3766 | { | |
3767 | info.tsec = bfd_abs_section_ptr; | |
3768 | symval = 0; | |
3769 | } | |
3770 | else if (!h->root.def_regular) | |
3771 | { | |
3772 | /* Except for TLSGD relocs, which can sometimes be | |
3773 | relaxed to GOTTPREL relocs. */ | |
3774 | if (r_type != R_ALPHA_TLSGD) | |
3775 | continue; | |
3776 | info.tsec = bfd_abs_section_ptr; | |
3777 | symval = 0; | |
3778 | } | |
3779 | else | |
3780 | { | |
3781 | info.tsec = h->root.root.u.def.section; | |
3782 | symval = h->root.root.u.def.value; | |
3783 | } | |
252b5132 | 3784 | |
a7519a3c RH |
3785 | info.h = h; |
3786 | info.other = h->root.other; | |
3787 | info.first_gotent = &h->got_entries; | |
3788 | } | |
252b5132 | 3789 | |
a7519a3c RH |
3790 | /* Search for the got entry to be used by this relocation. */ |
3791 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3792 | if (gotent->gotobj == info.gotobj | |
3793 | && gotent->reloc_type == r_type | |
3794 | && gotent->addend == irel->r_addend) | |
3795 | break; | |
3796 | info.gotent = gotent; | |
252b5132 | 3797 | |
a7519a3c RH |
3798 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3799 | symval += irel->r_addend; | |
252b5132 | 3800 | |
a7519a3c | 3801 | switch (r_type) |
252b5132 | 3802 | { |
a7519a3c RH |
3803 | case R_ALPHA_LITERAL: |
3804 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3805 | |
a7519a3c RH |
3806 | /* If there exist LITUSE relocations immediately following, this |
3807 | opens up all sorts of interesting optimizations, because we | |
3808 | now know every location that this address load is used. */ | |
3809 | if (irel+1 < irelend | |
3810 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3811 | { |
a7519a3c RH |
3812 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3813 | goto error_return; | |
252b5132 | 3814 | } |
a7519a3c RH |
3815 | else |
3816 | { | |
3817 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3818 | goto error_return; | |
3819 | } | |
3820 | break; | |
252b5132 | 3821 | |
a7519a3c RH |
3822 | case R_ALPHA_GOTDTPREL: |
3823 | case R_ALPHA_GOTTPREL: | |
3824 | BFD_ASSERT(info.gotent != NULL); | |
3825 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3826 | goto error_return; | |
3827 | break; | |
3828 | ||
3829 | case R_ALPHA_TLSGD: | |
3830 | case R_ALPHA_TLSLDM: | |
3831 | BFD_ASSERT(info.gotent != NULL); | |
3832 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3833 | r_type == R_ALPHA_TLSGD)) | |
3834 | goto error_return; | |
3835 | break; | |
252b5132 RH |
3836 | } |
3837 | } | |
3838 | ||
a7519a3c RH |
3839 | if (!elf64_alpha_size_plt_section (link_info)) |
3840 | return FALSE; | |
3841 | if (!elf64_alpha_size_got_sections (link_info)) | |
3842 | return FALSE; | |
3843 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
3844 | return FALSE; | |
dc810e39 | 3845 | |
a7519a3c RH |
3846 | if (isymbuf != NULL |
3847 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3848 | { | |
3849 | if (!link_info->keep_memory) | |
3850 | free (isymbuf); | |
3851 | else | |
252b5132 | 3852 | { |
a7519a3c RH |
3853 | /* Cache the symbols for elf_link_input_bfd. */ |
3854 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3855 | } |
a7519a3c | 3856 | } |
252b5132 | 3857 | |
a7519a3c RH |
3858 | if (info.contents != NULL |
3859 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3860 | { | |
3861 | if (!info.changed_contents && !link_info->keep_memory) | |
3862 | free (info.contents); | |
3863 | else | |
252b5132 | 3864 | { |
a7519a3c RH |
3865 | /* Cache the section contents for elf_link_input_bfd. */ |
3866 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3867 | } |
a7519a3c | 3868 | } |
252b5132 | 3869 | |
a7519a3c RH |
3870 | if (elf_section_data (sec)->relocs != internal_relocs) |
3871 | { | |
3872 | if (!info.changed_relocs) | |
3873 | free (internal_relocs); | |
3874 | else | |
3875 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3876 | } |
a7519a3c RH |
3877 | |
3878 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3879 | |
b34976b6 | 3880 | return TRUE; |
252b5132 | 3881 | |
a7519a3c RH |
3882 | error_return: |
3883 | if (isymbuf != NULL | |
3884 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3885 | free (isymbuf); | |
3886 | if (info.contents != NULL | |
3887 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3888 | free (info.contents); | |
3889 | if (internal_relocs != NULL | |
3890 | && elf_section_data (sec)->relocs != internal_relocs) | |
3891 | free (internal_relocs); | |
3892 | return FALSE; | |
3893 | } | |
3894 | \f | |
1bbc9cec RH |
3895 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3896 | into the next available slot in SREL. */ | |
3897 | ||
3898 | static void | |
a7519a3c RH |
3899 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3900 | asection *sec, asection *srel, bfd_vma offset, | |
3901 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3902 | { |
3903 | Elf_Internal_Rela outrel; | |
3904 | bfd_byte *loc; | |
3905 | ||
3906 | BFD_ASSERT (srel != NULL); | |
3907 | ||
3908 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3909 | outrel.r_addend = addend; | |
3910 | ||
3911 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3912 | if ((offset | 1) != (bfd_vma) -1) | |
3913 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3914 | else | |
3915 | memset (&outrel, 0, sizeof (outrel)); | |
3916 | ||
3917 | loc = srel->contents; | |
3918 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3919 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3920 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3921 | } |
3922 | ||
4a67a098 RH |
3923 | /* Relocate an Alpha ELF section for a relocatable link. |
3924 | ||
3925 | We don't have to change anything unless the reloc is against a section | |
3926 | symbol, in which case we have to adjust according to where the section | |
3927 | symbol winds up in the output section. */ | |
3928 | ||
b34976b6 | 3929 | static bfd_boolean |
a7519a3c RH |
3930 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3931 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3932 | bfd *input_bfd, asection *input_section, | |
3933 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3934 | Elf_Internal_Rela *relocs, | |
3935 | Elf_Internal_Sym *local_syms, | |
3936 | asection **local_sections) | |
4a67a098 RH |
3937 | { |
3938 | unsigned long symtab_hdr_sh_info; | |
3939 | Elf_Internal_Rela *rel; | |
3940 | Elf_Internal_Rela *relend; | |
b34976b6 | 3941 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
3942 | |
3943 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
3944 | ||
3945 | relend = relocs + input_section->reloc_count; | |
3946 | for (rel = relocs; rel < relend; rel++) | |
3947 | { | |
3948 | unsigned long r_symndx; | |
3949 | Elf_Internal_Sym *sym; | |
3950 | asection *sec; | |
3951 | unsigned long r_type; | |
3952 | ||
3953 | r_type = ELF64_R_TYPE(rel->r_info); | |
3954 | if (r_type >= R_ALPHA_max) | |
3955 | { | |
3956 | (*_bfd_error_handler) | |
d003868e AM |
3957 | (_("%B: unknown relocation type %d"), |
3958 | input_bfd, (int) r_type); | |
4a67a098 | 3959 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3960 | ret_val = FALSE; |
4a67a098 RH |
3961 | continue; |
3962 | } | |
3963 | ||
3964 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3965 | ||
3966 | /* The symbol associated with GPDISP and LITUSE is | |
3967 | immaterial. Only the addend is significant. */ | |
3968 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3969 | continue; | |
3970 | ||
3971 | if (r_symndx < symtab_hdr_sh_info) | |
3972 | { | |
3973 | sym = local_syms + r_symndx; | |
3974 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3975 | { | |
3976 | sec = local_sections[r_symndx]; | |
3977 | rel->r_addend += sec->output_offset + sym->st_value; | |
3978 | } | |
3979 | } | |
3980 | } | |
3981 | ||
3982 | return ret_val; | |
3983 | } | |
3984 | ||
252b5132 RH |
3985 | /* Relocate an Alpha ELF section. */ |
3986 | ||
b34976b6 | 3987 | static bfd_boolean |
a7519a3c RH |
3988 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3989 | bfd *input_bfd, asection *input_section, | |
3990 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
3991 | Elf_Internal_Sym *local_syms, | |
3992 | asection **local_sections) | |
252b5132 | 3993 | { |
4a67a098 | 3994 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
3995 | Elf_Internal_Rela *rel; |
3996 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
3997 | asection *sgot, *srel, *srelgot; |
3998 | bfd *dynobj, *gotobj; | |
3999 | bfd_vma gp, tp_base, dtp_base; | |
4000 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4001 | bfd_boolean ret_val; |
252b5132 | 4002 | |
4a67a098 | 4003 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 4004 | if (info->relocatable) |
4a67a098 RH |
4005 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4006 | input_section, contents, relocs, | |
4007 | local_syms, local_sections); | |
4008 | ||
4009 | /* This is a final link. */ | |
4010 | ||
b34976b6 | 4011 | ret_val = TRUE; |
252b5132 | 4012 | |
4a67a098 | 4013 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 4014 | |
4a67a098 RH |
4015 | dynobj = elf_hash_table (info)->dynobj; |
4016 | if (dynobj) | |
4017 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4018 | else | |
4019 | srelgot = NULL; | |
4020 | ||
3241278a RH |
4021 | if (input_section->flags & SEC_ALLOC) |
4022 | { | |
4023 | const char *section_name; | |
4024 | section_name = (bfd_elf_string_from_elf_section | |
4025 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4026 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4027 | BFD_ASSERT(section_name != NULL); | |
4028 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4029 | } | |
4030 | else | |
4031 | srel = NULL; | |
3765b1be | 4032 | |
4a67a098 RH |
4033 | /* Find the gp value for this input bfd. */ |
4034 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4035 | if (gotobj) | |
4036 | { | |
4037 | sgot = alpha_elf_tdata (gotobj)->got; | |
4038 | gp = _bfd_get_gp_value (gotobj); | |
4039 | if (gp == 0) | |
252b5132 | 4040 | { |
4a67a098 RH |
4041 | gp = (sgot->output_section->vma |
4042 | + sgot->output_offset | |
4043 | + 0x8000); | |
4044 | _bfd_set_gp_value (gotobj, gp); | |
4045 | } | |
4046 | } | |
4047 | else | |
4048 | { | |
4049 | sgot = NULL; | |
4050 | gp = 0; | |
4051 | } | |
3765b1be | 4052 | |
4a67a098 RH |
4053 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4054 | ||
e1918d23 | 4055 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4056 | { |
e1918d23 AM |
4057 | dtp_base = alpha_get_dtprel_base (info); |
4058 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4059 | } |
4a67a098 RH |
4060 | else |
4061 | dtp_base = tp_base = 0; | |
252b5132 | 4062 | |
252b5132 | 4063 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4064 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4065 | { |
4a67a098 | 4066 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4067 | struct alpha_elf_got_entry *gotent; |
4068 | bfd_reloc_status_type r; | |
252b5132 RH |
4069 | reloc_howto_type *howto; |
4070 | unsigned long r_symndx; | |
4a67a098 RH |
4071 | Elf_Internal_Sym *sym = NULL; |
4072 | asection *sec = NULL; | |
3765b1be | 4073 | bfd_vma value; |
dc810e39 | 4074 | bfd_vma addend; |
b34976b6 AM |
4075 | bfd_boolean dynamic_symbol_p; |
4076 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4077 | unsigned long r_type; |
252b5132 RH |
4078 | |
4079 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4080 | if (r_type >= R_ALPHA_max) |
252b5132 | 4081 | { |
3765b1be | 4082 | (*_bfd_error_handler) |
d003868e AM |
4083 | (_("%B: unknown relocation type %d"), |
4084 | input_bfd, (int) r_type); | |
252b5132 | 4085 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4086 | ret_val = FALSE; |
3765b1be | 4087 | continue; |
252b5132 | 4088 | } |
252b5132 | 4089 | |
3765b1be | 4090 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4091 | r_symndx = ELF64_R_SYM(rel->r_info); |
4092 | ||
cc03ec80 RH |
4093 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4094 | reloc to the 0 symbol so that they all match. */ | |
4095 | if (r_type == R_ALPHA_TLSLDM) | |
4096 | r_symndx = 0; | |
4097 | ||
252b5132 RH |
4098 | if (r_symndx < symtab_hdr->sh_info) |
4099 | { | |
8517fae7 | 4100 | asection *msec; |
252b5132 RH |
4101 | sym = local_syms + r_symndx; |
4102 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4103 | msec = sec; |
4104 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4105 | |
cc03ec80 RH |
4106 | /* If this is a tp-relative relocation against sym 0, |
4107 | this is hackery from relax_section. Force the value to | |
4108 | be the tls base. */ | |
4109 | if (r_symndx == 0 | |
4110 | && (r_type == R_ALPHA_TLSLDM | |
4111 | || r_type == R_ALPHA_GOTTPREL | |
4112 | || r_type == R_ALPHA_TPREL64 | |
4113 | || r_type == R_ALPHA_TPRELHI | |
4114 | || r_type == R_ALPHA_TPRELLO | |
4115 | || r_type == R_ALPHA_TPREL16)) | |
4116 | value = tp_base; | |
4117 | ||
4a67a098 RH |
4118 | if (local_got_entries) |
4119 | gotent = local_got_entries[r_symndx]; | |
4120 | else | |
4121 | gotent = NULL; | |
3765b1be RH |
4122 | |
4123 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4124 | unless it has been done already. */ | |
4125 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4126 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4127 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4128 | && gotent |
4129 | && !gotent->reloc_xlated) | |
3765b1be RH |
4130 | { |
4131 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4132 | |
4133 | for (ent = gotent; ent; ent = ent->next) | |
4134 | { | |
4135 | ent->reloc_xlated = 1; | |
4136 | if (ent->use_count == 0) | |
4137 | continue; | |
4138 | msec = sec; | |
4139 | ent->addend = | |
4140 | _bfd_merged_section_offset (output_bfd, &msec, | |
4141 | elf_section_data (sec)-> | |
4142 | sec_info, | |
753731ee | 4143 | sym->st_value + ent->addend); |
3765b1be RH |
4144 | ent->addend -= sym->st_value; |
4145 | ent->addend += msec->output_section->vma | |
4146 | + msec->output_offset | |
4147 | - sec->output_section->vma | |
4148 | - sec->output_offset; | |
4149 | } | |
4150 | } | |
4151 | ||
b34976b6 | 4152 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4153 | } |
4154 | else | |
4155 | { | |
560e09e9 NC |
4156 | bfd_boolean warned; |
4157 | bfd_boolean unresolved_reloc; | |
4158 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4159 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4160 | ||
4161 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4162 | r_symndx, symtab_hdr, sym_hashes, | |
4163 | hh, sec, value, | |
4164 | unresolved_reloc, warned); | |
560e09e9 NC |
4165 | |
4166 | if (warned) | |
4167 | continue; | |
252b5132 | 4168 | |
560e09e9 NC |
4169 | if (value == 0 |
4170 | && ! unresolved_reloc | |
4171 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4172 | undef_weak_ref = TRUE; |
3765b1be | 4173 | |
560e09e9 | 4174 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4175 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4176 | gotent = h->got_entries; | |
252b5132 | 4177 | } |
3765b1be | 4178 | |
252b5132 | 4179 | addend = rel->r_addend; |
3765b1be RH |
4180 | value += addend; |
4181 | ||
4182 | /* Search for the proper got entry. */ | |
4183 | for (; gotent ; gotent = gotent->next) | |
4184 | if (gotent->gotobj == gotobj | |
4185 | && gotent->reloc_type == r_type | |
4186 | && gotent->addend == addend) | |
4187 | break; | |
252b5132 RH |
4188 | |
4189 | switch (r_type) | |
4190 | { | |
4191 | case R_ALPHA_GPDISP: | |
4192 | { | |
4193 | bfd_byte *p_ldah, *p_lda; | |
4194 | ||
4195 | BFD_ASSERT(gp != 0); | |
4196 | ||
3765b1be RH |
4197 | value = (input_section->output_section->vma |
4198 | + input_section->output_offset | |
4199 | + rel->r_offset); | |
252b5132 | 4200 | |
3765b1be | 4201 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4202 | p_lda = p_ldah + rel->r_addend; |
4203 | ||
3765b1be | 4204 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4205 | p_ldah, p_lda); |
4206 | } | |
4207 | break; | |
4208 | ||
252b5132 | 4209 | case R_ALPHA_LITERAL: |
3765b1be RH |
4210 | BFD_ASSERT(sgot != NULL); |
4211 | BFD_ASSERT(gp != 0); | |
4212 | BFD_ASSERT(gotent != NULL); | |
4213 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4214 | |
3765b1be RH |
4215 | if (!gotent->reloc_done) |
4216 | { | |
4217 | gotent->reloc_done = 1; | |
252b5132 | 4218 | |
3765b1be RH |
4219 | bfd_put_64 (output_bfd, value, |
4220 | sgot->contents + gotent->got_offset); | |
252b5132 | 4221 | |
3765b1be RH |
4222 | /* If the symbol has been forced local, output a |
4223 | RELATIVE reloc, otherwise it will be handled in | |
4224 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4225 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4226 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4227 | gotent->got_offset, 0, | |
4228 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4229 | } |
252b5132 | 4230 | |
3765b1be RH |
4231 | value = (sgot->output_section->vma |
4232 | + sgot->output_offset | |
4233 | + gotent->got_offset); | |
4234 | value -= gp; | |
252b5132 RH |
4235 | goto default_reloc; |
4236 | ||
4237 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4238 | /* If the target section was a removed linkonce section, |
4239 | r_symndx will be zero. In this case, assume that the | |
4240 | switch will not be used, so don't fill it in. If we | |
4241 | do nothing here, we'll get relocation truncated messages, | |
4242 | due to the placement of the application above 4GB. */ | |
4243 | if (r_symndx == 0) | |
4244 | { | |
4245 | r = bfd_reloc_ok; | |
4246 | break; | |
4247 | } | |
4248 | /* FALLTHRU */ | |
4249 | ||
4250 | case R_ALPHA_GPREL16: | |
252b5132 | 4251 | case R_ALPHA_GPRELLOW: |
3765b1be | 4252 | if (dynamic_symbol_p) |
f16fbd61 RH |
4253 | { |
4254 | (*_bfd_error_handler) | |
d003868e AM |
4255 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4256 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4257 | ret_val = FALSE; |
f16fbd61 | 4258 | } |
252b5132 | 4259 | BFD_ASSERT(gp != 0); |
3765b1be | 4260 | value -= gp; |
252b5132 RH |
4261 | goto default_reloc; |
4262 | ||
4263 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4264 | if (dynamic_symbol_p) |
f16fbd61 RH |
4265 | { |
4266 | (*_bfd_error_handler) | |
d003868e AM |
4267 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4268 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4269 | ret_val = FALSE; |
f16fbd61 | 4270 | } |
252b5132 | 4271 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4272 | value -= gp; |
4273 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4274 | goto default_reloc; |
4275 | ||
252b5132 | 4276 | case R_ALPHA_HINT: |
f94952df RH |
4277 | /* A call to a dynamic symbol is definitely out of range of |
4278 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4279 | if (dynamic_symbol_p) |
f94952df RH |
4280 | { |
4281 | r = bfd_reloc_ok; | |
4282 | break; | |
4283 | } | |
3765b1be RH |
4284 | /* The regular PC-relative stuff measures from the start of |
4285 | the instruction rather than the end. */ | |
4286 | value -= 4; | |
4287 | goto default_reloc; | |
f94952df RH |
4288 | |
4289 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4290 | if (dynamic_symbol_p) |
4291 | { | |
4292 | (*_bfd_error_handler) | |
d003868e AM |
4293 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4294 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4295 | ret_val = FALSE; |
3765b1be | 4296 | } |
252b5132 RH |
4297 | /* The regular PC-relative stuff measures from the start of |
4298 | the instruction rather than the end. */ | |
3765b1be | 4299 | value -= 4; |
252b5132 RH |
4300 | goto default_reloc; |
4301 | ||
7793f4d0 RH |
4302 | case R_ALPHA_BRSGP: |
4303 | { | |
4304 | int other; | |
4305 | const char *name; | |
4306 | ||
4307 | /* The regular PC-relative stuff measures from the start of | |
4308 | the instruction rather than the end. */ | |
3765b1be | 4309 | value -= 4; |
7793f4d0 | 4310 | |
ccf00ab6 RH |
4311 | /* The source and destination gp must be the same. Note that |
4312 | the source will always have an assigned gp, since we forced | |
4313 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4314 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4315 | care not to crash if H is an undefined symbol. */ |
4316 | if (h != NULL && sec != NULL | |
4317 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4318 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4319 | { | |
7793f4d0 | 4320 | (*_bfd_error_handler) |
d003868e AM |
4321 | (_("%B: change in gp: BRSGP %s"), |
4322 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4323 | ret_val = FALSE; |
7793f4d0 RH |
4324 | } |
4325 | ||
4326 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4327 | if (h != NULL) | |
4328 | other = h->root.other; | |
4329 | else | |
4330 | other = sym->st_other; | |
4331 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4332 | { | |
4333 | case STO_ALPHA_NOPV: | |
4334 | break; | |
4335 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4336 | value += 8; |
7793f4d0 RH |
4337 | break; |
4338 | default: | |
4339 | if (h != NULL) | |
4340 | name = h->root.root.root.string; | |
4341 | else | |
4342 | { | |
4343 | name = (bfd_elf_string_from_elf_section | |
4344 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4345 | if (name == NULL) | |
4346 | name = _("<unknown>"); | |
4347 | else if (name[0] == 0) | |
4348 | name = bfd_section_name (input_bfd, sec); | |
4349 | } | |
4350 | (*_bfd_error_handler) | |
d003868e AM |
4351 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4352 | input_bfd, name); | |
b34976b6 | 4353 | ret_val = FALSE; |
7793f4d0 RH |
4354 | break; |
4355 | } | |
4356 | ||
4357 | goto default_reloc; | |
4358 | } | |
4359 | ||
252b5132 RH |
4360 | case R_ALPHA_REFLONG: |
4361 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4362 | case R_ALPHA_DTPREL64: |
4363 | case R_ALPHA_TPREL64: | |
252b5132 | 4364 | { |
1bbc9cec RH |
4365 | long dynindx, dyntype = r_type; |
4366 | bfd_vma dynaddend; | |
252b5132 RH |
4367 | |
4368 | /* Careful here to remember RELATIVE relocations for global | |
4369 | variables for symbolic shared objects. */ | |
4370 | ||
3765b1be | 4371 | if (dynamic_symbol_p) |
252b5132 RH |
4372 | { |
4373 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4374 | dynindx = h->root.dynindx; |
4375 | dynaddend = addend; | |
3765b1be RH |
4376 | addend = 0, value = 0; |
4377 | } | |
4378 | else if (r_type == R_ALPHA_DTPREL64) | |
4379 | { | |
e1918d23 | 4380 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4381 | value -= dtp_base; |
4382 | goto default_reloc; | |
4383 | } | |
4384 | else if (r_type == R_ALPHA_TPREL64) | |
4385 | { | |
e1918d23 | 4386 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4387 | if (!info->shared) |
4388 | { | |
4389 | value -= tp_base; | |
4390 | goto default_reloc; | |
4391 | } | |
4392 | dynindx = 0; | |
4393 | dynaddend = value - dtp_base; | |
252b5132 | 4394 | } |
ec338859 AM |
4395 | else if (info->shared |
4396 | && r_symndx != 0 | |
d6ad34f6 RH |
4397 | && (input_section->flags & SEC_ALLOC) |
4398 | && !undef_weak_ref) | |
252b5132 | 4399 | { |
3765b1be RH |
4400 | if (r_type == R_ALPHA_REFLONG) |
4401 | { | |
4402 | (*_bfd_error_handler) | |
d003868e AM |
4403 | (_("%B: unhandled dynamic relocation against %s"), |
4404 | input_bfd, | |
3765b1be | 4405 | h->root.root.root.string); |
b34976b6 | 4406 | ret_val = FALSE; |
3765b1be | 4407 | } |
1bbc9cec RH |
4408 | dynindx = 0; |
4409 | dyntype = R_ALPHA_RELATIVE; | |
4410 | dynaddend = value; | |
252b5132 RH |
4411 | } |
4412 | else | |
4413 | goto default_reloc; | |
4414 | ||
3241278a RH |
4415 | if (input_section->flags & SEC_ALLOC) |
4416 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4417 | srel, rel->r_offset, dynindx, | |
4418 | dyntype, dynaddend); | |
252b5132 RH |
4419 | } |
4420 | goto default_reloc; | |
4421 | ||
3765b1be | 4422 | case R_ALPHA_SREL16: |
84de6048 RH |
4423 | case R_ALPHA_SREL32: |
4424 | case R_ALPHA_SREL64: | |
3765b1be RH |
4425 | if (dynamic_symbol_p) |
4426 | { | |
4427 | (*_bfd_error_handler) | |
d003868e AM |
4428 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4429 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4430 | ret_val = FALSE; |
3765b1be | 4431 | } |
d6ad34f6 RH |
4432 | else if ((info->shared || info->pie) && undef_weak_ref) |
4433 | { | |
4434 | (*_bfd_error_handler) | |
4435 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4436 | input_bfd, h->root.root.root.string); | |
4437 | ret_val = FALSE; | |
4438 | } | |
4439 | ||
3765b1be | 4440 | |
84de6048 RH |
4441 | /* ??? .eh_frame references to discarded sections will be smashed |
4442 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4443 | NULL to be encoded as 0 in any format, so this works here. */ | |
4444 | if (r_symndx == 0) | |
4445 | howto = (elf64_alpha_howto_table | |
4446 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4447 | goto default_reloc; | |
4448 | ||
3765b1be RH |
4449 | case R_ALPHA_TLSLDM: |
4450 | /* Ignore the symbol for the relocation. The result is always | |
4451 | the current module. */ | |
4452 | dynamic_symbol_p = 0; | |
4453 | /* FALLTHRU */ | |
4454 | ||
4455 | case R_ALPHA_TLSGD: | |
4456 | if (!gotent->reloc_done) | |
4457 | { | |
4458 | gotent->reloc_done = 1; | |
4459 | ||
4460 | /* Note that the module index for the main program is 1. */ | |
4461 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4462 | sgot->contents + gotent->got_offset); | |
4463 | ||
4464 | /* If the symbol has been forced local, output a | |
4465 | DTPMOD64 reloc, otherwise it will be handled in | |
4466 | finish_dynamic_symbol. */ | |
4467 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4468 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4469 | gotent->got_offset, 0, | |
4470 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4471 | |
4472 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4473 | value = 0; | |
4474 | else | |
4475 | { | |
e1918d23 | 4476 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4477 | value -= dtp_base; |
4478 | } | |
4479 | bfd_put_64 (output_bfd, value, | |
4480 | sgot->contents + gotent->got_offset + 8); | |
4481 | } | |
4482 | ||
4483 | value = (sgot->output_section->vma | |
4484 | + sgot->output_offset | |
4485 | + gotent->got_offset); | |
4486 | value -= gp; | |
4487 | goto default_reloc; | |
4488 | ||
4489 | case R_ALPHA_DTPRELHI: | |
4490 | case R_ALPHA_DTPRELLO: | |
4491 | case R_ALPHA_DTPREL16: | |
4492 | if (dynamic_symbol_p) | |
4493 | { | |
4494 | (*_bfd_error_handler) | |
d003868e AM |
4495 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4496 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4497 | ret_val = FALSE; |
3765b1be | 4498 | } |
e1918d23 | 4499 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4500 | value -= dtp_base; |
9e756d64 RH |
4501 | if (r_type == R_ALPHA_DTPRELHI) |
4502 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4503 | goto default_reloc; |
4504 | ||
4505 | case R_ALPHA_TPRELHI: | |
4506 | case R_ALPHA_TPRELLO: | |
4507 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4508 | if (info->shared) |
4509 | { | |
4510 | (*_bfd_error_handler) | |
d003868e AM |
4511 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4512 | input_bfd); | |
b34976b6 | 4513 | ret_val = FALSE; |
9e756d64 RH |
4514 | } |
4515 | else if (dynamic_symbol_p) | |
3765b1be RH |
4516 | { |
4517 | (*_bfd_error_handler) | |
d003868e AM |
4518 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4519 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4520 | ret_val = FALSE; |
3765b1be | 4521 | } |
e1918d23 | 4522 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4523 | value -= tp_base; |
9e756d64 RH |
4524 | if (r_type == R_ALPHA_TPRELHI) |
4525 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4526 | goto default_reloc; |
4527 | ||
4528 | case R_ALPHA_GOTDTPREL: | |
4529 | case R_ALPHA_GOTTPREL: | |
4530 | BFD_ASSERT(sgot != NULL); | |
4531 | BFD_ASSERT(gp != 0); | |
4532 | BFD_ASSERT(gotent != NULL); | |
4533 | BFD_ASSERT(gotent->use_count >= 1); | |
4534 | ||
4535 | if (!gotent->reloc_done) | |
4536 | { | |
4537 | gotent->reloc_done = 1; | |
4538 | ||
4539 | if (dynamic_symbol_p) | |
4540 | value = 0; | |
4541 | else | |
4542 | { | |
e1918d23 | 4543 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4544 | if (r_type == R_ALPHA_GOTDTPREL) |
4545 | value -= dtp_base; | |
4546 | else if (!info->shared) | |
4547 | value -= tp_base; | |
4548 | else | |
4549 | { | |
4550 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4551 | gotent->got_offset, 0, | |
4552 | R_ALPHA_TPREL64, | |
4553 | value - dtp_base); | |
4554 | value = 0; | |
4555 | } | |
3765b1be RH |
4556 | } |
4557 | bfd_put_64 (output_bfd, value, | |
4558 | sgot->contents + gotent->got_offset); | |
4559 | } | |
4560 | ||
4561 | value = (sgot->output_section->vma | |
4562 | + sgot->output_offset | |
4563 | + gotent->got_offset); | |
4564 | value -= gp; | |
4565 | goto default_reloc; | |
4566 | ||
252b5132 RH |
4567 | default: |
4568 | default_reloc: | |
4569 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4570 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4571 | break; |
4572 | } | |
4573 | ||
4574 | switch (r) | |
4575 | { | |
4576 | case bfd_reloc_ok: | |
4577 | break; | |
4578 | ||
4579 | case bfd_reloc_overflow: | |
4580 | { | |
4581 | const char *name; | |
4582 | ||
ed4de5e2 JJ |
4583 | /* Don't warn if the overflow is due to pc relative reloc |
4584 | against discarded section. Section optimization code should | |
4585 | handle it. */ | |
4586 | ||
4587 | if (r_symndx < symtab_hdr->sh_info | |
4588 | && sec != NULL && howto->pc_relative | |
4589 | && elf_discarded_section (sec)) | |
4590 | break; | |
4591 | ||
252b5132 | 4592 | if (h != NULL) |
dfeffb9f | 4593 | name = NULL; |
252b5132 RH |
4594 | else |
4595 | { | |
4596 | name = (bfd_elf_string_from_elf_section | |
4597 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4598 | if (name == NULL) | |
b34976b6 | 4599 | return FALSE; |
252b5132 RH |
4600 | if (*name == '\0') |
4601 | name = bfd_section_name (input_bfd, sec); | |
4602 | } | |
4603 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4604 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4605 | (bfd_vma) 0, input_bfd, input_section, | |
4606 | rel->r_offset))) | |
b34976b6 | 4607 | ret_val = FALSE; |
252b5132 RH |
4608 | } |
4609 | break; | |
4610 | ||
4611 | default: | |
4612 | case bfd_reloc_outofrange: | |
4613 | abort (); | |
4614 | } | |
4615 | } | |
4616 | ||
f16fbd61 | 4617 | return ret_val; |
252b5132 RH |
4618 | } |
4619 | ||
4620 | /* Finish up dynamic symbol handling. We set the contents of various | |
4621 | dynamic sections here. */ | |
4622 | ||
b34976b6 | 4623 | static bfd_boolean |
a7519a3c RH |
4624 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4625 | struct elf_link_hash_entry *h, | |
4626 | Elf_Internal_Sym *sym) | |
252b5132 RH |
4627 | { |
4628 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4629 | ||
4630 | if (h->plt.offset != MINUS_ONE) | |
4631 | { | |
4632 | /* Fill in the .plt entry for this symbol. */ | |
4633 | asection *splt, *sgot, *srel; | |
4634 | Elf_Internal_Rela outrel; | |
947216bf | 4635 | bfd_byte *loc; |
252b5132 RH |
4636 | bfd_vma got_addr, plt_addr; |
4637 | bfd_vma plt_index; | |
4638 | struct alpha_elf_got_entry *gotent; | |
4639 | ||
4640 | BFD_ASSERT (h->dynindx != -1); | |
4641 | ||
4642 | /* The first .got entry will be updated by the .plt with the | |
4643 | address of the target function. */ | |
4644 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
4645 | BFD_ASSERT (gotent && gotent->addend == 0); | |
4646 | ||
4647 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4648 | BFD_ASSERT (splt != NULL); | |
4649 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4650 | BFD_ASSERT (srel != NULL); | |
4651 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
4652 | BFD_ASSERT (sgot != NULL); | |
4653 | ||
4654 | got_addr = (sgot->output_section->vma | |
4655 | + sgot->output_offset | |
4656 | + gotent->got_offset); | |
4657 | plt_addr = (splt->output_section->vma | |
4658 | + splt->output_offset | |
4659 | + h->plt.offset); | |
4660 | ||
4661 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
4662 | ||
4663 | /* Fill in the entry in the procedure linkage table. */ | |
4664 | { | |
dc810e39 | 4665 | bfd_vma insn1, insn2, insn3; |
252b5132 RH |
4666 | |
4667 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
4668 | insn2 = PLT_ENTRY_WORD2; | |
4669 | insn3 = PLT_ENTRY_WORD3; | |
4670 | ||
4671 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
4672 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
4673 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
4674 | } | |
4675 | ||
4676 | /* Fill in the entry in the .rela.plt section. */ | |
4677 | outrel.r_offset = got_addr; | |
4678 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4679 | outrel.r_addend = 0; | |
4680 | ||
947216bf AM |
4681 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4682 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4683 | |
f5385ebf | 4684 | if (!h->def_regular) |
252b5132 RH |
4685 | { |
4686 | /* Mark the symbol as undefined, rather than as defined in the | |
4687 | .plt section. Leave the value alone. */ | |
4688 | sym->st_shndx = SHN_UNDEF; | |
4689 | } | |
4690 | ||
4691 | /* Fill in the entries in the .got. */ | |
4692 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
4693 | ||
4694 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
4695 | if (gotent->next) | |
4696 | { | |
4697 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4698 | BFD_ASSERT (! info->shared || srel != NULL); | |
4699 | ||
4700 | gotent = gotent->next; | |
4701 | do | |
4702 | { | |
4703 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
4704 | BFD_ASSERT(sgot != NULL); | |
4705 | BFD_ASSERT(gotent->addend == 0); | |
4706 | ||
4707 | bfd_put_64 (output_bfd, plt_addr, | |
4708 | sgot->contents + gotent->got_offset); | |
4709 | ||
4710 | if (info->shared) | |
1bbc9cec RH |
4711 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4712 | gotent->got_offset, 0, | |
4713 | R_ALPHA_RELATIVE, plt_addr); | |
252b5132 RH |
4714 | |
4715 | gotent = gotent->next; | |
4716 | } | |
4717 | while (gotent != NULL); | |
4718 | } | |
4719 | } | |
4720 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4721 | { | |
4722 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4723 | asection *srel; | |
252b5132 RH |
4724 | struct alpha_elf_got_entry *gotent; |
4725 | ||
4726 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4727 | BFD_ASSERT (srel != NULL); | |
4728 | ||
252b5132 RH |
4729 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4730 | gotent != NULL; | |
4731 | gotent = gotent->next) | |
4732 | { | |
f44f99a5 | 4733 | asection *sgot; |
1bbc9cec | 4734 | long r_type; |
3765b1be | 4735 | |
f44f99a5 RH |
4736 | if (gotent->use_count == 0) |
4737 | continue; | |
4738 | ||
4739 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4740 | |
4741 | r_type = gotent->reloc_type; | |
4742 | switch (r_type) | |
4743 | { | |
4744 | case R_ALPHA_LITERAL: | |
4745 | r_type = R_ALPHA_GLOB_DAT; | |
4746 | break; | |
4747 | case R_ALPHA_TLSGD: | |
4748 | r_type = R_ALPHA_DTPMOD64; | |
4749 | break; | |
4750 | case R_ALPHA_GOTDTPREL: | |
4751 | r_type = R_ALPHA_DTPREL64; | |
4752 | break; | |
4753 | case R_ALPHA_GOTTPREL: | |
4754 | r_type = R_ALPHA_TPREL64; | |
4755 | break; | |
4756 | case R_ALPHA_TLSLDM: | |
4757 | default: | |
4758 | abort (); | |
4759 | } | |
4760 | ||
1bbc9cec RH |
4761 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4762 | gotent->got_offset, h->dynindx, | |
4763 | r_type, gotent->addend); | |
3765b1be RH |
4764 | |
4765 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4766 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4767 | gotent->got_offset + 8, h->dynindx, | |
4768 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4769 | } |
4770 | } | |
4771 | ||
4772 | /* Mark some specially defined symbols as absolute. */ | |
4773 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4774 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4775 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4776 | sym->st_shndx = SHN_ABS; | |
4777 | ||
b34976b6 | 4778 | return TRUE; |
252b5132 RH |
4779 | } |
4780 | ||
4781 | /* Finish up the dynamic sections. */ | |
4782 | ||
b34976b6 | 4783 | static bfd_boolean |
a7519a3c RH |
4784 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4785 | struct bfd_link_info *info) | |
252b5132 RH |
4786 | { |
4787 | bfd *dynobj; | |
4788 | asection *sdyn; | |
4789 | ||
4790 | dynobj = elf_hash_table (info)->dynobj; | |
4791 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4792 | ||
4793 | if (elf_hash_table (info)->dynamic_sections_created) | |
4794 | { | |
4795 | asection *splt; | |
4796 | Elf64_External_Dyn *dyncon, *dynconend; | |
4797 | ||
4798 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4799 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
4800 | ||
4801 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 4802 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4803 | for (; dyncon < dynconend; dyncon++) |
4804 | { | |
4805 | Elf_Internal_Dyn dyn; | |
4806 | const char *name; | |
4807 | asection *s; | |
4808 | ||
4809 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4810 | ||
4811 | switch (dyn.d_tag) | |
4812 | { | |
4813 | case DT_PLTGOT: | |
4814 | name = ".plt"; | |
4815 | goto get_vma; | |
4816 | case DT_PLTRELSZ: | |
4817 | name = ".rela.plt"; | |
4818 | goto get_size; | |
4819 | case DT_JMPREL: | |
4820 | name = ".rela.plt"; | |
4821 | goto get_vma; | |
4822 | ||
4823 | case DT_RELASZ: | |
4824 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4825 | that RELASZ should not include JMPREL. This is not what | |
4826 | the rest of the BFD does. It is, however, what the | |
4827 | glibc ld.so wants. Do this fixup here until we found | |
4828 | out who is right. */ | |
4829 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4830 | if (s) | |
eea6121a | 4831 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
4832 | break; |
4833 | ||
4834 | get_vma: | |
4835 | s = bfd_get_section_by_name (output_bfd, name); | |
4836 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
4837 | break; | |
4838 | ||
4839 | get_size: | |
4840 | s = bfd_get_section_by_name (output_bfd, name); | |
eea6121a | 4841 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4842 | break; |
4843 | } | |
4844 | ||
4845 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4846 | } | |
4847 | ||
ae9a127f | 4848 | /* Initialize the PLT0 entry. */ |
eea6121a | 4849 | if (splt->size > 0) |
252b5132 RH |
4850 | { |
4851 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
4852 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
4853 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
4854 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
4855 | ||
4856 | /* The next two words will be filled in by ld.so */ | |
dc810e39 AM |
4857 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16); |
4858 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24); | |
252b5132 | 4859 | |
eecdbe52 | 4860 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4861 | } |
4862 | } | |
4863 | ||
b34976b6 | 4864 | return TRUE; |
252b5132 RH |
4865 | } |
4866 | ||
96e2734b RH |
4867 | /* We need to use a special link routine to handle the .mdebug section. |
4868 | We need to merge all instances of these sections together, not write | |
4869 | them all out sequentially. */ | |
252b5132 | 4870 | |
b34976b6 | 4871 | static bfd_boolean |
a7519a3c | 4872 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4873 | { |
4874 | asection *o; | |
4875 | struct bfd_link_order *p; | |
96e2734b | 4876 | asection *mdebug_sec; |
252b5132 RH |
4877 | struct ecoff_debug_info debug; |
4878 | const struct ecoff_debug_swap *swap | |
4879 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4880 | HDRR *symhdr = &debug.symbolic_header; | |
4881 | PTR mdebug_handle = NULL; | |
4882 | ||
96e2734b | 4883 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4884 | mdebug_sec = NULL; |
252b5132 RH |
4885 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4886 | { | |
252b5132 RH |
4887 | if (strcmp (o->name, ".mdebug") == 0) |
4888 | { | |
4889 | struct extsym_info einfo; | |
4890 | ||
4891 | /* We have found the .mdebug section in the output file. | |
4892 | Look through all the link_orders comprising it and merge | |
4893 | the information together. */ | |
4894 | symhdr->magic = swap->sym_magic; | |
4895 | /* FIXME: What should the version stamp be? */ | |
4896 | symhdr->vstamp = 0; | |
4897 | symhdr->ilineMax = 0; | |
4898 | symhdr->cbLine = 0; | |
4899 | symhdr->idnMax = 0; | |
4900 | symhdr->ipdMax = 0; | |
4901 | symhdr->isymMax = 0; | |
4902 | symhdr->ioptMax = 0; | |
4903 | symhdr->iauxMax = 0; | |
4904 | symhdr->issMax = 0; | |
4905 | symhdr->issExtMax = 0; | |
4906 | symhdr->ifdMax = 0; | |
4907 | symhdr->crfd = 0; | |
4908 | symhdr->iextMax = 0; | |
4909 | ||
4910 | /* We accumulate the debugging information itself in the | |
4911 | debug_info structure. */ | |
4912 | debug.line = NULL; | |
4913 | debug.external_dnr = NULL; | |
4914 | debug.external_pdr = NULL; | |
4915 | debug.external_sym = NULL; | |
4916 | debug.external_opt = NULL; | |
4917 | debug.external_aux = NULL; | |
4918 | debug.ss = NULL; | |
4919 | debug.ssext = debug.ssext_end = NULL; | |
4920 | debug.external_fdr = NULL; | |
4921 | debug.external_rfd = NULL; | |
4922 | debug.external_ext = debug.external_ext_end = NULL; | |
4923 | ||
4924 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4925 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4926 | return FALSE; |
252b5132 RH |
4927 | |
4928 | if (1) | |
4929 | { | |
4930 | asection *s; | |
4931 | EXTR esym; | |
52b9d213 | 4932 | bfd_vma last = 0; |
252b5132 RH |
4933 | unsigned int i; |
4934 | static const char * const name[] = | |
4935 | { | |
4936 | ".text", ".init", ".fini", ".data", | |
4937 | ".rodata", ".sdata", ".sbss", ".bss" | |
4938 | }; | |
4939 | static const int sc[] = { scText, scInit, scFini, scData, | |
4940 | scRData, scSData, scSBss, scBss }; | |
4941 | ||
4942 | esym.jmptbl = 0; | |
4943 | esym.cobol_main = 0; | |
4944 | esym.weakext = 0; | |
4945 | esym.reserved = 0; | |
4946 | esym.ifd = ifdNil; | |
4947 | esym.asym.iss = issNil; | |
4948 | esym.asym.st = stLocal; | |
4949 | esym.asym.reserved = 0; | |
4950 | esym.asym.index = indexNil; | |
4951 | for (i = 0; i < 8; i++) | |
4952 | { | |
4953 | esym.asym.sc = sc[i]; | |
4954 | s = bfd_get_section_by_name (abfd, name[i]); | |
4955 | if (s != NULL) | |
4956 | { | |
4957 | esym.asym.value = s->vma; | |
eea6121a | 4958 | last = s->vma + s->size; |
252b5132 RH |
4959 | } |
4960 | else | |
4961 | esym.asym.value = last; | |
4962 | ||
4963 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4964 | name[i], &esym)) | |
b34976b6 | 4965 | return FALSE; |
252b5132 RH |
4966 | } |
4967 | } | |
4968 | ||
8423293d | 4969 | for (p = o->map_head.link_order; |
252b5132 RH |
4970 | p != (struct bfd_link_order *) NULL; |
4971 | p = p->next) | |
4972 | { | |
4973 | asection *input_section; | |
4974 | bfd *input_bfd; | |
4975 | const struct ecoff_debug_swap *input_swap; | |
4976 | struct ecoff_debug_info input_debug; | |
4977 | char *eraw_src; | |
4978 | char *eraw_end; | |
4979 | ||
4980 | if (p->type != bfd_indirect_link_order) | |
4981 | { | |
fd96f80f | 4982 | if (p->type == bfd_data_link_order) |
252b5132 RH |
4983 | continue; |
4984 | abort (); | |
4985 | } | |
4986 | ||
4987 | input_section = p->u.indirect.section; | |
4988 | input_bfd = input_section->owner; | |
4989 | ||
4990 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
4991 | || (get_elf_backend_data (input_bfd) | |
4992 | ->elf_backend_ecoff_debug_swap) == NULL) | |
4993 | { | |
4994 | /* I don't know what a non ALPHA ELF bfd would be | |
4995 | doing with a .mdebug section, but I don't really | |
4996 | want to deal with it. */ | |
4997 | continue; | |
4998 | } | |
4999 | ||
5000 | input_swap = (get_elf_backend_data (input_bfd) | |
5001 | ->elf_backend_ecoff_debug_swap); | |
5002 | ||
eea6121a | 5003 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5004 | |
5005 | /* The ECOFF linking code expects that we have already | |
5006 | read in the debugging information and set up an | |
5007 | ecoff_debug_info structure, so we do that now. */ | |
5008 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5009 | &input_debug)) | |
b34976b6 | 5010 | return FALSE; |
252b5132 RH |
5011 | |
5012 | if (! (bfd_ecoff_debug_accumulate | |
5013 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5014 | &input_debug, input_swap, info))) | |
b34976b6 | 5015 | return FALSE; |
252b5132 RH |
5016 | |
5017 | /* Loop through the external symbols. For each one with | |
5018 | interesting information, try to find the symbol in | |
5019 | the linker global hash table and save the information | |
5020 | for the output external symbols. */ | |
5021 | eraw_src = input_debug.external_ext; | |
5022 | eraw_end = (eraw_src | |
5023 | + (input_debug.symbolic_header.iextMax | |
5024 | * input_swap->external_ext_size)); | |
5025 | for (; | |
5026 | eraw_src < eraw_end; | |
5027 | eraw_src += input_swap->external_ext_size) | |
5028 | { | |
5029 | EXTR ext; | |
5030 | const char *name; | |
5031 | struct alpha_elf_link_hash_entry *h; | |
5032 | ||
5033 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5034 | if (ext.asym.sc == scNil | |
5035 | || ext.asym.sc == scUndefined | |
5036 | || ext.asym.sc == scSUndefined) | |
5037 | continue; | |
5038 | ||
5039 | name = input_debug.ssext + ext.asym.iss; | |
5040 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5041 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5042 | if (h == NULL || h->esym.ifd != -2) |
5043 | continue; | |
5044 | ||
5045 | if (ext.ifd != -1) | |
5046 | { | |
5047 | BFD_ASSERT (ext.ifd | |
5048 | < input_debug.symbolic_header.ifdMax); | |
5049 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5050 | } | |
5051 | ||
5052 | h->esym = ext; | |
5053 | } | |
5054 | ||
5055 | /* Free up the information we just read. */ | |
5056 | free (input_debug.line); | |
5057 | free (input_debug.external_dnr); | |
5058 | free (input_debug.external_pdr); | |
5059 | free (input_debug.external_sym); | |
5060 | free (input_debug.external_opt); | |
5061 | free (input_debug.external_aux); | |
5062 | free (input_debug.ss); | |
5063 | free (input_debug.ssext); | |
5064 | free (input_debug.external_fdr); | |
5065 | free (input_debug.external_rfd); | |
5066 | free (input_debug.external_ext); | |
5067 | ||
5068 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5069 | elf_link_input_bfd ignores this section. */ | |
5070 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5071 | } | |
5072 | ||
252b5132 RH |
5073 | /* Build the external symbol information. */ |
5074 | einfo.abfd = abfd; | |
5075 | einfo.info = info; | |
5076 | einfo.debug = &debug; | |
5077 | einfo.swap = swap; | |
b34976b6 | 5078 | einfo.failed = FALSE; |
252b5132 RH |
5079 | elf_link_hash_traverse (elf_hash_table (info), |
5080 | elf64_alpha_output_extsym, | |
5081 | (PTR) &einfo); | |
5082 | if (einfo.failed) | |
b34976b6 | 5083 | return FALSE; |
252b5132 RH |
5084 | |
5085 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5086 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5087 | |
5088 | /* Skip this section later on (I don't think this currently | |
5089 | matters, but someday it might). */ | |
8423293d | 5090 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5091 | |
5092 | mdebug_sec = o; | |
5093 | } | |
252b5132 RH |
5094 | } |
5095 | ||
5096 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5097 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5098 | return FALSE; |
252b5132 RH |
5099 | |
5100 | /* Now write out the computed sections. */ | |
5101 | ||
5102 | /* The .got subsections... */ | |
5103 | { | |
5104 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5105 | for (i = alpha_elf_hash_table(info)->got_list; | |
5106 | i != NULL; | |
5107 | i = alpha_elf_tdata(i)->got_link_next) | |
5108 | { | |
5109 | asection *sgot; | |
5110 | ||
5111 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5112 | if (i == dynobj) | |
5113 | continue; | |
5114 | ||
5115 | sgot = alpha_elf_tdata(i)->got; | |
5116 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5117 | sgot->contents, |
5118 | (file_ptr) sgot->output_offset, | |
eea6121a | 5119 | sgot->size)) |
b34976b6 | 5120 | return FALSE; |
252b5132 RH |
5121 | } |
5122 | } | |
5123 | ||
252b5132 RH |
5124 | if (mdebug_sec != (asection *) NULL) |
5125 | { | |
5126 | BFD_ASSERT (abfd->output_has_begun); | |
5127 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5128 | swap, info, | |
5129 | mdebug_sec->filepos)) | |
b34976b6 | 5130 | return FALSE; |
252b5132 RH |
5131 | |
5132 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5133 | } | |
5134 | ||
b34976b6 | 5135 | return TRUE; |
252b5132 | 5136 | } |
fcfbdf31 JJ |
5137 | |
5138 | static enum elf_reloc_type_class | |
a7519a3c | 5139 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5140 | { |
f51e552e | 5141 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5142 | { |
5143 | case R_ALPHA_RELATIVE: | |
5144 | return reloc_class_relative; | |
5145 | case R_ALPHA_JMP_SLOT: | |
5146 | return reloc_class_plt; | |
5147 | case R_ALPHA_COPY: | |
5148 | return reloc_class_copy; | |
5149 | default: | |
5150 | return reloc_class_normal; | |
5151 | } | |
5152 | } | |
252b5132 | 5153 | \f |
7f4d3958 L |
5154 | static struct bfd_elf_special_section const |
5155 | alpha_special_sections_s[]= | |
2f89ff8d | 5156 | { |
7dcb9820 AM |
5157 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5158 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5159 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5160 | }; |
5161 | ||
7f4d3958 L |
5162 | static struct bfd_elf_special_section const * |
5163 | elf64_alpha_special_sections[27] = | |
5164 | { | |
5165 | NULL, /* 'a' */ | |
5166 | NULL, /* 'b' */ | |
5167 | NULL, /* 'c' */ | |
5168 | NULL, /* 'd' */ | |
5169 | NULL, /* 'e' */ | |
5170 | NULL, /* 'f' */ | |
5171 | NULL, /* 'g' */ | |
5172 | NULL, /* 'h' */ | |
5173 | NULL, /* 'i' */ | |
5174 | NULL, /* 'j' */ | |
5175 | NULL, /* 'k' */ | |
5176 | NULL, /* 'l' */ | |
5177 | NULL, /* 'm' */ | |
5178 | NULL, /* 'n' */ | |
5179 | NULL, /* 'o' */ | |
5180 | NULL, /* 'p' */ | |
5181 | NULL, /* 'q' */ | |
5182 | NULL, /* 'r' */ | |
5183 | alpha_special_sections_s, /* 's' */ | |
5184 | NULL, /* 't' */ | |
5185 | NULL, /* 'u' */ | |
5186 | NULL, /* 'v' */ | |
5187 | NULL, /* 'w' */ | |
5188 | NULL, /* 'x' */ | |
5189 | NULL, /* 'y' */ | |
5190 | NULL, /* 'z' */ | |
5191 | NULL /* other */ | |
5192 | }; | |
5193 | ||
252b5132 RH |
5194 | /* ECOFF swapping routines. These are used when dealing with the |
5195 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5196 | from elf32-mips.c. */ |
252b5132 RH |
5197 | static const struct ecoff_debug_swap |
5198 | elf64_alpha_ecoff_debug_swap = | |
5199 | { | |
5200 | /* Symbol table magic number. */ | |
5201 | magicSym2, | |
5202 | /* Alignment of debugging information. E.g., 4. */ | |
5203 | 8, | |
5204 | /* Sizes of external symbolic information. */ | |
5205 | sizeof (struct hdr_ext), | |
5206 | sizeof (struct dnr_ext), | |
5207 | sizeof (struct pdr_ext), | |
5208 | sizeof (struct sym_ext), | |
5209 | sizeof (struct opt_ext), | |
5210 | sizeof (struct fdr_ext), | |
5211 | sizeof (struct rfd_ext), | |
5212 | sizeof (struct ext_ext), | |
5213 | /* Functions to swap in external symbolic data. */ | |
5214 | ecoff_swap_hdr_in, | |
5215 | ecoff_swap_dnr_in, | |
5216 | ecoff_swap_pdr_in, | |
5217 | ecoff_swap_sym_in, | |
5218 | ecoff_swap_opt_in, | |
5219 | ecoff_swap_fdr_in, | |
5220 | ecoff_swap_rfd_in, | |
5221 | ecoff_swap_ext_in, | |
5222 | _bfd_ecoff_swap_tir_in, | |
5223 | _bfd_ecoff_swap_rndx_in, | |
5224 | /* Functions to swap out external symbolic data. */ | |
5225 | ecoff_swap_hdr_out, | |
5226 | ecoff_swap_dnr_out, | |
5227 | ecoff_swap_pdr_out, | |
5228 | ecoff_swap_sym_out, | |
5229 | ecoff_swap_opt_out, | |
5230 | ecoff_swap_fdr_out, | |
5231 | ecoff_swap_rfd_out, | |
5232 | ecoff_swap_ext_out, | |
5233 | _bfd_ecoff_swap_tir_out, | |
5234 | _bfd_ecoff_swap_rndx_out, | |
5235 | /* Function to read in symbolic data. */ | |
5236 | elf64_alpha_read_ecoff_info | |
5237 | }; | |
5238 | \f | |
70bcb145 JW |
5239 | /* Use a non-standard hash bucket size of 8. */ |
5240 | ||
562ace6b | 5241 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5242 | { |
5243 | sizeof (Elf64_External_Ehdr), | |
5244 | sizeof (Elf64_External_Phdr), | |
5245 | sizeof (Elf64_External_Shdr), | |
5246 | sizeof (Elf64_External_Rel), | |
5247 | sizeof (Elf64_External_Rela), | |
5248 | sizeof (Elf64_External_Sym), | |
5249 | sizeof (Elf64_External_Dyn), | |
5250 | sizeof (Elf_External_Note), | |
5251 | 8, | |
5252 | 1, | |
45d6a902 | 5253 | 64, 3, |
70bcb145 JW |
5254 | ELFCLASS64, EV_CURRENT, |
5255 | bfd_elf64_write_out_phdrs, | |
5256 | bfd_elf64_write_shdrs_and_ehdr, | |
5257 | bfd_elf64_write_relocs, | |
73ff0d56 | 5258 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5259 | bfd_elf64_swap_symbol_out, |
5260 | bfd_elf64_slurp_reloc_table, | |
5261 | bfd_elf64_slurp_symbol_table, | |
5262 | bfd_elf64_swap_dyn_in, | |
5263 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5264 | bfd_elf64_swap_reloc_in, |
5265 | bfd_elf64_swap_reloc_out, | |
5266 | bfd_elf64_swap_reloca_in, | |
5267 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5268 | }; |
5269 | ||
252b5132 RH |
5270 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5271 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5272 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5273 | #define ELF_MACHINE_CODE EM_ALPHA |
5274 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5275 | |
5276 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5277 | elf64_alpha_bfd_link_hash_table_create | |
5278 | ||
5279 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5280 | elf64_alpha_bfd_reloc_type_lookup | |
5281 | #define elf_info_to_howto \ | |
5282 | elf64_alpha_info_to_howto | |
5283 | ||
5284 | #define bfd_elf64_mkobject \ | |
5285 | elf64_alpha_mkobject | |
5286 | #define elf_backend_object_p \ | |
5287 | elf64_alpha_object_p | |
5288 | ||
5289 | #define elf_backend_section_from_shdr \ | |
5290 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5291 | #define elf_backend_section_flags \ |
5292 | elf64_alpha_section_flags | |
252b5132 RH |
5293 | #define elf_backend_fake_sections \ |
5294 | elf64_alpha_fake_sections | |
5295 | ||
5296 | #define bfd_elf64_bfd_is_local_label_name \ | |
5297 | elf64_alpha_is_local_label_name | |
5298 | #define bfd_elf64_find_nearest_line \ | |
5299 | elf64_alpha_find_nearest_line | |
5300 | #define bfd_elf64_bfd_relax_section \ | |
5301 | elf64_alpha_relax_section | |
5302 | ||
5303 | #define elf_backend_add_symbol_hook \ | |
5304 | elf64_alpha_add_symbol_hook | |
5305 | #define elf_backend_check_relocs \ | |
5306 | elf64_alpha_check_relocs | |
5307 | #define elf_backend_create_dynamic_sections \ | |
5308 | elf64_alpha_create_dynamic_sections | |
5309 | #define elf_backend_adjust_dynamic_symbol \ | |
5310 | elf64_alpha_adjust_dynamic_symbol | |
5311 | #define elf_backend_always_size_sections \ | |
5312 | elf64_alpha_always_size_sections | |
5313 | #define elf_backend_size_dynamic_sections \ | |
5314 | elf64_alpha_size_dynamic_sections | |
5315 | #define elf_backend_relocate_section \ | |
5316 | elf64_alpha_relocate_section | |
5317 | #define elf_backend_finish_dynamic_symbol \ | |
5318 | elf64_alpha_finish_dynamic_symbol | |
5319 | #define elf_backend_finish_dynamic_sections \ | |
5320 | elf64_alpha_finish_dynamic_sections | |
5321 | #define bfd_elf64_bfd_final_link \ | |
5322 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5323 | #define elf_backend_reloc_type_class \ |
5324 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5325 | |
5326 | #define elf_backend_ecoff_debug_swap \ | |
5327 | &elf64_alpha_ecoff_debug_swap | |
5328 | ||
70bcb145 JW |
5329 | #define elf_backend_size_info \ |
5330 | alpha_elf_size_info | |
5331 | ||
2f89ff8d L |
5332 | #define elf_backend_special_sections \ |
5333 | elf64_alpha_special_sections | |
5334 | ||
38b1a46c | 5335 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5336 | #define elf_backend_want_got_plt 0 |
5337 | #define elf_backend_plt_readonly 0 | |
5338 | #define elf_backend_want_plt_sym 1 | |
5339 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5340 | |
5341 | #include "elf64-target.h" | |
2238051f RH |
5342 | \f |
5343 | /* FreeBSD support. */ | |
5344 | ||
5345 | #undef TARGET_LITTLE_SYM | |
5346 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5347 | #undef TARGET_LITTLE_NAME | |
5348 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5349 | ||
5350 | /* The kernel recognizes executables as valid only if they carry a | |
5351 | "FreeBSD" label in the ELF header. So we put this label on all | |
5352 | executables and (for simplicity) also all other object files. */ | |
5353 | ||
2238051f | 5354 | static void |
a7519a3c RH |
5355 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5356 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5357 | { |
5358 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5359 | ||
5360 | i_ehdrp = elf_elfheader (abfd); | |
5361 | ||
5362 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5363 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5364 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5365 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5366 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5367 | #endif | |
5368 | } | |
5369 | ||
5370 | #undef elf_backend_post_process_headers | |
5371 | #define elf_backend_post_process_headers \ | |
5372 | elf64_alpha_fbsd_post_process_headers | |
5373 | ||
571fe01f | 5374 | #undef elf64_bed |
2238051f RH |
5375 | #define elf64_bed elf64_alpha_fbsd_bed |
5376 | ||
5377 | #include "elf64-target.h" |