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Fix races in gdb.mi/mi-var-display.exp.
[deliverable/binutils-gdb.git] / bfd / elf64-alpha.c
CommitLineData
252b5132 1/* Alpha specific support for 64-bit ELF
66eb6687 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
e117360e 3 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
252b5132
RH		 4 Contributed by Richard Henderson <rth@tamu.edu>.
5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
252b5132
RH		 23
24/* We need a published ABI spec for this. Until one comes out, don't
25 assume this'll remain unchanged forever. */
26
252b5132 27#include "sysdep.h"
3db64b00 28#include "bfd.h"
252b5132
RH		 29#include "libbfd.h"
30#include "elf-bfd.h"
31
32#include "elf/alpha.h"
33
34#define ALPHAECOFF
35
36#define NO_COFF_RELOCS
37#define NO_COFF_SYMBOLS
38#define NO_COFF_LINENOS
39
fe8bc63d 40/* Get the ECOFF swapping routines. Needed for the debug information. */
252b5132
RH		 41#include "coff/internal.h"
42#include "coff/sym.h"
43#include "coff/symconst.h"
44#include "coff/ecoff.h"
45#include "coff/alpha.h"
46#include "aout/ar.h"
47#include "libcoff.h"
48#include "libecoff.h"
49#define ECOFF_64
50#include "ecoffswap.h"
51
6ec7057a
RH		 52\f
53/* Instruction data for plt generation and relaxation. */
54
55#define OP_LDA 0x08
56#define OP_LDAH 0x09
57#define OP_LDQ 0x29
58#define OP_BR 0x30
59#define OP_BSR 0x34
60
61#define INSN_LDA (OP_LDA << 26)
62#define INSN_LDAH (OP_LDAH << 26)
63#define INSN_LDQ (OP_LDQ << 26)
64#define INSN_BR (OP_BR << 26)
65
66#define INSN_ADDQ 0x40000400
67#define INSN_RDUNIQ 0x0000009e
68#define INSN_SUBQ 0x40000520
69#define INSN_S4SUBQ 0x40000560
70#define INSN_UNOP 0x2ffe0000
71
72#define INSN_JSR 0x68004000
73#define INSN_JMP 0x68000000
74#define INSN_JSR_MASK 0xfc00c000
75
76#define INSN_A(I,A) (I | (A << 21))
77#define INSN_AB(I,A,B) (I | (A << 21) | (B << 16))
78#define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C)
79#define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff))
80#define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff))
81
82/* PLT/GOT Stuff */
83
84/* Set by ld emulation. Putting this into the link_info or hash structure
85 is simply working too hard. */
86#ifdef USE_SECUREPLT
87bfd_boolean elf64_alpha_use_secureplt = TRUE;
88#else
89bfd_boolean elf64_alpha_use_secureplt = FALSE;
90#endif
91
92#define OLD_PLT_HEADER_SIZE 32
93#define OLD_PLT_ENTRY_SIZE 12
94#define NEW_PLT_HEADER_SIZE 36
95#define NEW_PLT_ENTRY_SIZE 4
96
97#define PLT_HEADER_SIZE \
98 (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE)
99#define PLT_ENTRY_SIZE \
100 (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE)
101
102#define MAX_GOT_SIZE (64*1024)
103
104#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
252b5132 105\f
21d799b5
NC		 106
107/* Used to implement multiple .got subsections. */
108struct alpha_elf_got_entry
109{
110 struct alpha_elf_got_entry *next;
111
112 /* Which .got subsection? */
113 bfd *gotobj;
114
115 /* The addend in effect for this entry. */
116 bfd_vma addend;
117
118 /* The .got offset for this entry. */
119 int got_offset;
120
121 /* The .plt offset for this entry. */
122 int plt_offset;
123
124 /* How many references to this entry? */
125 int use_count;
126
127 /* The relocation type of this entry. */
128 unsigned char reloc_type;
129
130 /* How a LITERAL is used. */
131 unsigned char flags;
132
133 /* Have we initialized the dynamic relocation for this entry? */
134 unsigned char reloc_done;
135
136 /* Have we adjusted this entry for SEC_MERGE? */
137 unsigned char reloc_xlated;
138};
139
140struct alpha_elf_reloc_entry
141{
142 struct alpha_elf_reloc_entry *next;
143
144 /* Which .reloc section? */
145 asection *srel;
146
147 /* What kind of relocation? */
148 unsigned int rtype;
149
150 /* Is this against read-only section? */
151 unsigned int reltext : 1;
152
153 /* How many did we find? */
154 unsigned long count;
155};
156
252b5132
RH		 157struct alpha_elf_link_hash_entry
158{
159 struct elf_link_hash_entry root;
160
161 /* External symbol information. */
162 EXTR esym;
163
164 /* Cumulative flags for all the .got entries. */
165 int flags;
166
9e756d64 167 /* Contexts in which a literal was referenced. */
8288a39e
RH		 168#define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01
169#define ALPHA_ELF_LINK_HASH_LU_MEM 0x02
170#define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04
171#define ALPHA_ELF_LINK_HASH_LU_JSR 0x08
172#define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10
173#define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20
174#define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40
175#define ALPHA_ELF_LINK_HASH_LU_PLT 0x38
176#define ALPHA_ELF_LINK_HASH_TLS_IE 0x80
cc03ec80 177
252b5132 178 /* Used to implement multiple .got subsections. */
21d799b5 179 struct alpha_elf_got_entry *got_entries;
252b5132 180
571fe01f 181 /* Used to count non-got, non-plt relocations for delayed sizing
252b5132 182 of relocation sections. */
21d799b5 183 struct alpha_elf_reloc_entry *reloc_entries;
252b5132
RH		 184};
185
186/* Alpha ELF linker hash table. */
187
188struct alpha_elf_link_hash_table
189{
190 struct elf_link_hash_table root;
191
192 /* The head of a list of .got subsections linked through
193 alpha_elf_tdata(abfd)->got_link_next. */
194 bfd *got_list;
4a828aab
RH		 195
196 /* The most recent relax pass that we've seen. The GOTs
197 should be regenerated if this doesn't match. */
198 int relax_trip;
252b5132
RH		 199};
200
201/* Look up an entry in a Alpha ELF linker hash table. */
202
203#define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \
204 ((struct alpha_elf_link_hash_entry *) \
205 elf_link_hash_lookup (&(table)->root, (string), (create), \
206 (copy), (follow)))
207
208/* Traverse a Alpha ELF linker hash table. */
209
210#define alpha_elf_link_hash_traverse(table, func, info) \
211 (elf_link_hash_traverse \
212 (&(table)->root, \
a7519a3c 213 (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \
252b5132
RH		 214 (info)))
215
216/* Get the Alpha ELF linker hash table from a link_info structure. */
217
218#define alpha_elf_hash_table(p) \
4dfe6ac6
NC		 219 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
220 == ALPHA_ELF_DATA ? ((struct alpha_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132
RH		 221
222/* Get the object's symbols as our own entry type. */
223
224#define alpha_elf_sym_hashes(abfd) \
225 ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd))
226
986a241f
RH		 227/* Should we do dynamic things to this symbol? This differs from the
228 generic version in that we never need to consider function pointer
229 equality wrt PLT entries -- we don't create a PLT entry if a symbol's
230 address is ever taken. */
252b5132 231
986a241f 232static inline bfd_boolean
a7519a3c
RH		 233alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h,
234 struct bfd_link_info *info)
8fb35fed 235{
986a241f 236 return _bfd_elf_dynamic_symbol_p (h, info, 0);
8fb35fed 237}
252b5132
RH		 238
239/* Create an entry in a Alpha ELF linker hash table. */
240
241static struct bfd_hash_entry *
a7519a3c
RH		 242elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry,
243 struct bfd_hash_table *table,
244 const char *string)
252b5132
RH		 245{
246 struct alpha_elf_link_hash_entry *ret =
247 (struct alpha_elf_link_hash_entry *) entry;
248
249 /* Allocate the structure if it has not already been allocated by a
250 subclass. */
251 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
252 ret = ((struct alpha_elf_link_hash_entry *)
253 bfd_hash_allocate (table,
254 sizeof (struct alpha_elf_link_hash_entry)));
255 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
256 return (struct bfd_hash_entry *) ret;
257
258 /* Call the allocation method of the superclass. */
259 ret = ((struct alpha_elf_link_hash_entry *)
260 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
261 table, string));
262 if (ret != (struct alpha_elf_link_hash_entry *) NULL)
263 {
264 /* Set local fields. */
265 memset (&ret->esym, 0, sizeof (EXTR));
266 /* We use -2 as a marker to indicate that the information has
267 not been set. -1 means there is no associated ifd. */
268 ret->esym.ifd = -2;
269 ret->flags = 0;
270 ret->got_entries = NULL;
271 ret->reloc_entries = NULL;
272 }
273
274 return (struct bfd_hash_entry *) ret;
275}
276
277/* Create a Alpha ELF linker hash table. */
278
279static struct bfd_link_hash_table *
a7519a3c 280elf64_alpha_bfd_link_hash_table_create (bfd *abfd)
252b5132
RH		 281{
282 struct alpha_elf_link_hash_table *ret;
dc810e39 283 bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table);
252b5132 284
e2d34d7d 285 ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt);
252b5132
RH		 286 if (ret == (struct alpha_elf_link_hash_table *) NULL)
287 return NULL;
288
66eb6687
AM		 289 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
290 elf64_alpha_link_hash_newfunc,
4dfe6ac6
NC		 291 sizeof (struct alpha_elf_link_hash_entry),
292 ALPHA_ELF_DATA))
252b5132 293 {
e2d34d7d 294 free (ret);
252b5132
RH		 295 return NULL;
296 }
297
298 return &ret->root.root;
299}
300\f
301/* We have some private fields hanging off of the elf_tdata structure. */
302
303struct alpha_elf_obj_tdata
304{
305 struct elf_obj_tdata root;
306
307 /* For every input file, these are the got entries for that object's
308 local symbols. */
309 struct alpha_elf_got_entry ** local_got_entries;
310
311 /* For every input file, this is the object that owns the got that
312 this input file uses. */
313 bfd *gotobj;
314
315 /* For every got, this is a linked list through the objects using this got */
316 bfd *in_got_link_next;
317
318 /* For every got, this is a link to the next got subsegment. */
319 bfd *got_link_next;
320
321 /* For every got, this is the section. */
322 asection *got;
323
3765b1be
RH		 324 /* For every got, this is it's total number of words. */
325 int total_got_size;
252b5132 326
3765b1be 327 /* For every got, this is the sum of the number of words required
252b5132 328 to hold all of the member object's local got. */
3765b1be 329 int local_got_size;
252b5132
RH		 330};
331
332#define alpha_elf_tdata(abfd) \
333 ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any)
334
0ffa91dd
NC		 335#define is_alpha_elf(bfd) \
336 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
337 && elf_tdata (bfd) != NULL \
4dfe6ac6 338 && elf_object_id (bfd) == ALPHA_ELF_DATA)
0ffa91dd 339
b34976b6 340static bfd_boolean
a7519a3c 341elf64_alpha_mkobject (bfd *abfd)
252b5132 342{
0ffa91dd 343 return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata),
4dfe6ac6 344 ALPHA_ELF_DATA);
252b5132
RH		 345}
346
b34976b6 347static bfd_boolean
a7519a3c 348elf64_alpha_object_p (bfd *abfd)
252b5132 349{
252b5132
RH		 350 /* Set the right machine number for an Alpha ELF file. */
351 return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
352}
353\f
a7519a3c
RH		 354/* A relocation function which doesn't do anything. */
355
356static bfd_reloc_status_type
357elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
358 asymbol *sym ATTRIBUTE_UNUSED,
359 PTR data ATTRIBUTE_UNUSED, asection *sec,
360 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
361{
362 if (output_bfd)
363 reloc->address += sec->output_offset;
364 return bfd_reloc_ok;
365}
366
367/* A relocation function used for an unsupported reloc. */
368
369static bfd_reloc_status_type
370elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
371 asymbol *sym ATTRIBUTE_UNUSED,
372 PTR data ATTRIBUTE_UNUSED, asection *sec,
373 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
374{
375 if (output_bfd)
376 reloc->address += sec->output_offset;
377 return bfd_reloc_notsupported;
378}
379
380/* Do the work of the GPDISP relocation. */
381
382static bfd_reloc_status_type
383elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah,
384 bfd_byte *p_lda)
385{
386 bfd_reloc_status_type ret = bfd_reloc_ok;
387 bfd_vma addend;
388 unsigned long i_ldah, i_lda;
389
390 i_ldah = bfd_get_32 (abfd, p_ldah);
391 i_lda = bfd_get_32 (abfd, p_lda);
392
393 /* Complain if the instructions are not correct. */
394 if (((i_ldah >> 26) & 0x3f) != 0x09
395 || ((i_lda >> 26) & 0x3f) != 0x08)
396 ret = bfd_reloc_dangerous;
397
398 /* Extract the user-supplied offset, mirroring the sign extensions
399 that the instructions perform. */
400 addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
401 addend = (addend ^ 0x80008000) - 0x80008000;
402
403 gpdisp += addend;
404
405 if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000
406 || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000)
407 ret = bfd_reloc_overflow;
408
409 /* compensate for the sign extension again. */
410 i_ldah = ((i_ldah & 0xffff0000)
411 | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
412 i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
413
414 bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah);
415 bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda);
416
417 return ret;
418}
419
420/* The special function for the GPDISP reloc. */
421
422static bfd_reloc_status_type
423elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry,
424 asymbol *sym ATTRIBUTE_UNUSED, PTR data,
425 asection *input_section, bfd *output_bfd,
426 char **err_msg)
427{
428 bfd_reloc_status_type ret;
429 bfd_vma gp, relocation;
430 bfd_vma high_address;
431 bfd_byte *p_ldah, *p_lda;
432
433 /* Don't do anything if we're not doing a final link. */
434 if (output_bfd)
435 {
436 reloc_entry->address += input_section->output_offset;
437 return bfd_reloc_ok;
438 }
439
440 high_address = bfd_get_section_limit (abfd, input_section);
441 if (reloc_entry->address > high_address
442 || reloc_entry->address + reloc_entry->addend > high_address)
443 return bfd_reloc_outofrange;
444
445 /* The gp used in the portion of the output object to which this
446 input object belongs is cached on the input bfd. */
447 gp = _bfd_get_gp_value (abfd);
448
449 relocation = (input_section->output_section->vma
450 + input_section->output_offset
451 + reloc_entry->address);
452
453 p_ldah = (bfd_byte *) data + reloc_entry->address;
454 p_lda = p_ldah + reloc_entry->addend;
455
456 ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
457
458 /* Complain if the instructions are not correct. */
459 if (ret == bfd_reloc_dangerous)
460 *err_msg = _("GPDISP relocation did not find ldah and lda instructions");
461
462 return ret;
463}
464
252b5132
RH		 465/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
466 from smaller values. Start with zero, widen, *then* decrement. */
467#define MINUS_ONE (((bfd_vma)0) - 1)
468
21d799b5 469
dfe57ca0 470#define SKIP_HOWTO(N) \
21d799b5 471 HOWTO(N, 0, 0, 0, 0, 0, complain_overflow_dont, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0)
dfe57ca0 472
252b5132
RH		 473static reloc_howto_type elf64_alpha_howto_table[] =
474{
475 HOWTO (R_ALPHA_NONE, /* type */
476 0, /* rightshift */
477 0, /* size (0 = byte, 1 = short, 2 = long) */
478 8, /* bitsize */
b34976b6 479 TRUE, /* pc_relative */
252b5132
RH		 480 0, /* bitpos */
481 complain_overflow_dont, /* complain_on_overflow */
482 elf64_alpha_reloc_nil, /* special_function */
483 "NONE", /* name */
b34976b6 484 FALSE, /* partial_inplace */
252b5132
RH		 485 0, /* src_mask */
486 0, /* dst_mask */
b34976b6 487 TRUE), /* pcrel_offset */
252b5132
RH		 488
489 /* A 32 bit reference to a symbol. */
490 HOWTO (R_ALPHA_REFLONG, /* type */
491 0, /* rightshift */
492 2, /* size (0 = byte, 1 = short, 2 = long) */
493 32, /* bitsize */
b34976b6 494 FALSE, /* pc_relative */
252b5132
RH		 495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 497 bfd_elf_generic_reloc, /* special_function */
252b5132 498 "REFLONG", /* name */
b34976b6 499 FALSE, /* partial_inplace */
252b5132
RH		 500 0xffffffff, /* src_mask */
501 0xffffffff, /* dst_mask */
b34976b6 502 FALSE), /* pcrel_offset */
252b5132
RH		 503
504 /* A 64 bit reference to a symbol. */
505 HOWTO (R_ALPHA_REFQUAD, /* type */
506 0, /* rightshift */
507 4, /* size (0 = byte, 1 = short, 2 = long) */
508 64, /* bitsize */
b34976b6 509 FALSE, /* pc_relative */
252b5132
RH		 510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 512 bfd_elf_generic_reloc, /* special_function */
252b5132 513 "REFQUAD", /* name */
b34976b6 514 FALSE, /* partial_inplace */
252b5132
RH		 515 MINUS_ONE, /* src_mask */
516 MINUS_ONE, /* dst_mask */
b34976b6 517 FALSE), /* pcrel_offset */
252b5132
RH		 518
519 /* A 32 bit GP relative offset. This is just like REFLONG except
520 that when the value is used the value of the gp register will be
521 added in. */
522 HOWTO (R_ALPHA_GPREL32, /* type */
523 0, /* rightshift */
524 2, /* size (0 = byte, 1 = short, 2 = long) */
525 32, /* bitsize */
b34976b6 526 FALSE, /* pc_relative */
252b5132
RH		 527 0, /* bitpos */
528 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 529 bfd_elf_generic_reloc, /* special_function */
252b5132 530 "GPREL32", /* name */
b34976b6 531 FALSE, /* partial_inplace */
252b5132
RH		 532 0xffffffff, /* src_mask */
533 0xffffffff, /* dst_mask */
b34976b6 534 FALSE), /* pcrel_offset */
252b5132
RH		 535
536 /* Used for an instruction that refers to memory off the GP register. */
537 HOWTO (R_ALPHA_LITERAL, /* type */
538 0, /* rightshift */
dfe57ca0 539 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 540 16, /* bitsize */
b34976b6 541 FALSE, /* pc_relative */
252b5132
RH		 542 0, /* bitpos */
543 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 544 bfd_elf_generic_reloc, /* special_function */
252b5132 545 "ELF_LITERAL", /* name */
b34976b6 546 FALSE, /* partial_inplace */
252b5132
RH		 547 0xffff, /* src_mask */
548 0xffff, /* dst_mask */
b34976b6 549 FALSE), /* pcrel_offset */
252b5132
RH		 550
551 /* This reloc only appears immediately following an ELF_LITERAL reloc.
552 It identifies a use of the literal. The symbol index is special:
553 1 means the literal address is in the base register of a memory
554 format instruction; 2 means the literal address is in the byte
555 offset register of a byte-manipulation instruction; 3 means the
556 literal address is in the target register of a jsr instruction.
557 This does not actually do any relocation. */
558 HOWTO (R_ALPHA_LITUSE, /* type */
559 0, /* rightshift */
dfe57ca0 560 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 561 32, /* bitsize */
b34976b6 562 FALSE, /* pc_relative */
252b5132
RH		 563 0, /* bitpos */
564 complain_overflow_dont, /* complain_on_overflow */
565 elf64_alpha_reloc_nil, /* special_function */
566 "LITUSE", /* name */
b34976b6 567 FALSE, /* partial_inplace */
252b5132
RH		 568 0, /* src_mask */
569 0, /* dst_mask */
b34976b6 570 FALSE), /* pcrel_offset */
252b5132
RH		 571
572 /* Load the gp register. This is always used for a ldah instruction
573 which loads the upper 16 bits of the gp register. The symbol
574 index of the GPDISP instruction is an offset in bytes to the lda
575 instruction that loads the lower 16 bits. The value to use for
576 the relocation is the difference between the GP value and the
577 current location; the load will always be done against a register
578 holding the current address.
579
580 NOTE: Unlike ECOFF, partial in-place relocation is not done. If
581 any offset is present in the instructions, it is an offset from
582 the register to the ldah instruction. This lets us avoid any
583 stupid hackery like inventing a gp value to do partial relocation
584 against. Also unlike ECOFF, we do the whole relocation off of
585 the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd,
586 space consuming bit, that, since all the information was present
587 in the GPDISP_HI16 reloc. */
588 HOWTO (R_ALPHA_GPDISP, /* type */
589 16, /* rightshift */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
b34976b6 592 FALSE, /* pc_relative */
252b5132
RH		 593 0, /* bitpos */
594 complain_overflow_dont, /* complain_on_overflow */
595 elf64_alpha_reloc_gpdisp, /* special_function */
596 "GPDISP", /* name */
b34976b6 597 FALSE, /* partial_inplace */
252b5132
RH		 598 0xffff, /* src_mask */
599 0xffff, /* dst_mask */
b34976b6 600 TRUE), /* pcrel_offset */
252b5132
RH		 601
602 /* A 21 bit branch. */
603 HOWTO (R_ALPHA_BRADDR, /* type */
604 2, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 21, /* bitsize */
b34976b6 607 TRUE, /* pc_relative */
252b5132
RH		 608 0, /* bitpos */
609 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 610 bfd_elf_generic_reloc, /* special_function */
252b5132 611 "BRADDR", /* name */
b34976b6 612 FALSE, /* partial_inplace */
252b5132
RH		 613 0x1fffff, /* src_mask */
614 0x1fffff, /* dst_mask */
b34976b6 615 TRUE), /* pcrel_offset */
252b5132
RH		 616
617 /* A hint for a jump to a register. */
618 HOWTO (R_ALPHA_HINT, /* type */
619 2, /* rightshift */
dfe57ca0 620 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 621 14, /* bitsize */
b34976b6 622 TRUE, /* pc_relative */
252b5132
RH		 623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
bc1bc43f 625 bfd_elf_generic_reloc, /* special_function */
252b5132 626 "HINT", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH		 628 0x3fff, /* src_mask */
629 0x3fff, /* dst_mask */
b34976b6 630 TRUE), /* pcrel_offset */
252b5132
RH		 631
632 /* 16 bit PC relative offset. */
633 HOWTO (R_ALPHA_SREL16, /* type */
634 0, /* rightshift */
635 1, /* size (0 = byte, 1 = short, 2 = long) */
636 16, /* bitsize */
b34976b6 637 TRUE, /* pc_relative */
252b5132
RH		 638 0, /* bitpos */
639 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 640 bfd_elf_generic_reloc, /* special_function */
252b5132 641 "SREL16", /* name */
b34976b6 642 FALSE, /* partial_inplace */
252b5132
RH		 643 0xffff, /* src_mask */
644 0xffff, /* dst_mask */
b34976b6 645 TRUE), /* pcrel_offset */
252b5132
RH		 646
647 /* 32 bit PC relative offset. */
648 HOWTO (R_ALPHA_SREL32, /* type */
649 0, /* rightshift */
650 2, /* size (0 = byte, 1 = short, 2 = long) */
651 32, /* bitsize */
b34976b6 652 TRUE, /* pc_relative */
252b5132
RH		 653 0, /* bitpos */
654 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 655 bfd_elf_generic_reloc, /* special_function */
252b5132 656 "SREL32", /* name */
b34976b6 657 FALSE, /* partial_inplace */
252b5132
RH		 658 0xffffffff, /* src_mask */
659 0xffffffff, /* dst_mask */
b34976b6 660 TRUE), /* pcrel_offset */
252b5132
RH		 661
662 /* A 64 bit PC relative offset. */
663 HOWTO (R_ALPHA_SREL64, /* type */
664 0, /* rightshift */
665 4, /* size (0 = byte, 1 = short, 2 = long) */
666 64, /* bitsize */
b34976b6 667 TRUE, /* pc_relative */
252b5132
RH		 668 0, /* bitpos */
669 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 670 bfd_elf_generic_reloc, /* special_function */
252b5132 671 "SREL64", /* name */
b34976b6 672 FALSE, /* partial_inplace */
252b5132
RH		 673 MINUS_ONE, /* src_mask */
674 MINUS_ONE, /* dst_mask */
b34976b6 675 TRUE), /* pcrel_offset */
252b5132 676
dfe57ca0
RH		 677 /* Skip 12 - 16; deprecated ECOFF relocs. */
678 SKIP_HOWTO (12),
679 SKIP_HOWTO (13),
680 SKIP_HOWTO (14),
681 SKIP_HOWTO (15),
682 SKIP_HOWTO (16),
252b5132
RH		 683
684 /* The high 16 bits of the displacement from GP to the target. */
685 HOWTO (R_ALPHA_GPRELHIGH,
686 0, /* rightshift */
dfe57ca0 687 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 688 16, /* bitsize */
b34976b6 689 FALSE, /* pc_relative */
252b5132
RH		 690 0, /* bitpos */
691 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 692 bfd_elf_generic_reloc, /* special_function */
252b5132 693 "GPRELHIGH", /* name */
b34976b6 694 FALSE, /* partial_inplace */
252b5132
RH		 695 0xffff, /* src_mask */
696 0xffff, /* dst_mask */
b34976b6 697 FALSE), /* pcrel_offset */
252b5132
RH		 698
699 /* The low 16 bits of the displacement from GP to the target. */
700 HOWTO (R_ALPHA_GPRELLOW,
701 0, /* rightshift */
dfe57ca0 702 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 703 16, /* bitsize */
b34976b6 704 FALSE, /* pc_relative */
252b5132
RH		 705 0, /* bitpos */
706 complain_overflow_dont, /* complain_on_overflow */
bc1bc43f 707 bfd_elf_generic_reloc, /* special_function */
252b5132 708 "GPRELLOW", /* name */
b34976b6 709 FALSE, /* partial_inplace */
252b5132
RH		 710 0xffff, /* src_mask */
711 0xffff, /* dst_mask */
b34976b6 712 FALSE), /* pcrel_offset */
252b5132
RH		 713
714 /* A 16-bit displacement from the GP to the target. */
dfe57ca0 715 HOWTO (R_ALPHA_GPREL16,
252b5132 716 0, /* rightshift */
dfe57ca0 717 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 718 16, /* bitsize */
b34976b6 719 FALSE, /* pc_relative */
252b5132
RH		 720 0, /* bitpos */
721 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 722 bfd_elf_generic_reloc, /* special_function */
dfe57ca0 723 "GPREL16", /* name */
b34976b6 724 FALSE, /* partial_inplace */
252b5132
RH		 725 0xffff, /* src_mask */
726 0xffff, /* dst_mask */
b34976b6 727 FALSE), /* pcrel_offset */
252b5132 728
dfe57ca0
RH		 729 /* Skip 20 - 23; deprecated ECOFF relocs. */
730 SKIP_HOWTO (20),
731 SKIP_HOWTO (21),
732 SKIP_HOWTO (22),
733 SKIP_HOWTO (23),
252b5132 734
fe8bc63d 735 /* Misc ELF relocations. */
252b5132
RH		 736
737 /* A dynamic relocation to copy the target into our .dynbss section. */
738 /* Not generated, as all Alpha objects use PIC, so it is not needed. It
739 is present because every other ELF has one, but should not be used
740 because .dynbss is an ugly thing. */
741 HOWTO (R_ALPHA_COPY,
742 0,
743 0,
744 0,
b34976b6 745 FALSE,
252b5132
RH		 746 0,
747 complain_overflow_dont,
748 bfd_elf_generic_reloc,
749 "COPY",
b34976b6 750 FALSE,
252b5132
RH		 751 0,
752 0,
b34976b6 753 TRUE),
252b5132
RH		 754
755 /* A dynamic relocation for a .got entry. */
756 HOWTO (R_ALPHA_GLOB_DAT,
757 0,
758 0,
759 0,
b34976b6 760 FALSE,
252b5132
RH		 761 0,
762 complain_overflow_dont,
763 bfd_elf_generic_reloc,
764 "GLOB_DAT",
b34976b6 765 FALSE,
252b5132
RH		 766 0,
767 0,
b34976b6 768 TRUE),
252b5132
RH		 769
770 /* A dynamic relocation for a .plt entry. */
771 HOWTO (R_ALPHA_JMP_SLOT,
772 0,
773 0,
774 0,
b34976b6 775 FALSE,
252b5132
RH		 776 0,
777 complain_overflow_dont,
778 bfd_elf_generic_reloc,
779 "JMP_SLOT",
b34976b6 780 FALSE,
252b5132
RH		 781 0,
782 0,
b34976b6 783 TRUE),
252b5132
RH		 784
785 /* A dynamic relocation to add the base of the DSO to a 64-bit field. */
786 HOWTO (R_ALPHA_RELATIVE,
787 0,
788 0,
789 0,
b34976b6 790 FALSE,
252b5132
RH		 791 0,
792 complain_overflow_dont,
793 bfd_elf_generic_reloc,
794 "RELATIVE",
b34976b6 795 FALSE,
252b5132
RH		 796 0,
797 0,
b34976b6 798 TRUE),
7793f4d0
RH		 799
800 /* A 21 bit branch that adjusts for gp loads. */
801 HOWTO (R_ALPHA_BRSGP, /* type */
802 2, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 21, /* bitsize */
b34976b6 805 TRUE, /* pc_relative */
7793f4d0
RH		 806 0, /* bitpos */
807 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 808 bfd_elf_generic_reloc, /* special_function */
7793f4d0 809 "BRSGP", /* name */
b34976b6 810 FALSE, /* partial_inplace */
7793f4d0
RH		 811 0x1fffff, /* src_mask */
812 0x1fffff, /* dst_mask */
b34976b6 813 TRUE), /* pcrel_offset */
3765b1be
RH		 814
815 /* Creates a tls_index for the symbol in the got. */
816 HOWTO (R_ALPHA_TLSGD, /* type */
817 0, /* rightshift */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
819 16, /* bitsize */
b34976b6 820 FALSE, /* pc_relative */
3765b1be
RH		 821 0, /* bitpos */
822 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 823 bfd_elf_generic_reloc, /* special_function */
3765b1be 824 "TLSGD", /* name */
b34976b6 825 FALSE, /* partial_inplace */
3765b1be
RH		 826 0xffff, /* src_mask */
827 0xffff, /* dst_mask */
b34976b6 828 FALSE), /* pcrel_offset */
3765b1be
RH		 829
830 /* Creates a tls_index for the (current) module in the got. */
831 HOWTO (R_ALPHA_TLSLDM, /* type */
832 0, /* rightshift */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
834 16, /* bitsize */
b34976b6 835 FALSE, /* pc_relative */
3765b1be
RH		 836 0, /* bitpos */
837 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 838 bfd_elf_generic_reloc, /* special_function */
3765b1be 839 "TLSLDM", /* name */
b34976b6 840 FALSE, /* partial_inplace */
3765b1be
RH		 841 0xffff, /* src_mask */
842 0xffff, /* dst_mask */
b34976b6 843 FALSE), /* pcrel_offset */
3765b1be
RH		 844
845 /* A dynamic relocation for a DTP module entry. */
846 HOWTO (R_ALPHA_DTPMOD64, /* type */
847 0, /* rightshift */
848 4, /* size (0 = byte, 1 = short, 2 = long) */
849 64, /* bitsize */
b34976b6 850 FALSE, /* pc_relative */
3765b1be
RH		 851 0, /* bitpos */
852 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 853 bfd_elf_generic_reloc, /* special_function */
3765b1be 854 "DTPMOD64", /* name */
b34976b6 855 FALSE, /* partial_inplace */
3765b1be
RH		 856 MINUS_ONE, /* src_mask */
857 MINUS_ONE, /* dst_mask */
b34976b6 858 FALSE), /* pcrel_offset */
3765b1be
RH		 859
860 /* Creates a 64-bit offset in the got for the displacement
861 from DTP to the target. */
862 HOWTO (R_ALPHA_GOTDTPREL, /* type */
863 0, /* rightshift */
864 1, /* size (0 = byte, 1 = short, 2 = long) */
865 16, /* bitsize */
b34976b6 866 FALSE, /* pc_relative */
3765b1be
RH		 867 0, /* bitpos */
868 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 869 bfd_elf_generic_reloc, /* special_function */
3765b1be 870 "GOTDTPREL", /* name */
b34976b6 871 FALSE, /* partial_inplace */
3765b1be
RH		 872 0xffff, /* src_mask */
873 0xffff, /* dst_mask */
b34976b6 874 FALSE), /* pcrel_offset */
3765b1be
RH		 875
876 /* A dynamic relocation for a displacement from DTP to the target. */
877 HOWTO (R_ALPHA_DTPREL64, /* type */
878 0, /* rightshift */
879 4, /* size (0 = byte, 1 = short, 2 = long) */
880 64, /* bitsize */
b34976b6 881 FALSE, /* pc_relative */
3765b1be
RH		 882 0, /* bitpos */
883 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 884 bfd_elf_generic_reloc, /* special_function */
3765b1be 885 "DTPREL64", /* name */
b34976b6 886 FALSE, /* partial_inplace */
3765b1be
RH		 887 MINUS_ONE, /* src_mask */
888 MINUS_ONE, /* dst_mask */
b34976b6 889 FALSE), /* pcrel_offset */
3765b1be
RH		 890
891 /* The high 16 bits of the displacement from DTP to the target. */
892 HOWTO (R_ALPHA_DTPRELHI, /* type */
893 0, /* rightshift */
894 1, /* size (0 = byte, 1 = short, 2 = long) */
895 16, /* bitsize */
b34976b6 896 FALSE, /* pc_relative */
3765b1be
RH		 897 0, /* bitpos */
898 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 899 bfd_elf_generic_reloc, /* special_function */
3765b1be 900 "DTPRELHI", /* name */
b34976b6 901 FALSE, /* partial_inplace */
3765b1be
RH		 902 0xffff, /* src_mask */
903 0xffff, /* dst_mask */
b34976b6 904 FALSE), /* pcrel_offset */
3765b1be
RH		 905
906 /* The low 16 bits of the displacement from DTP to the target. */
907 HOWTO (R_ALPHA_DTPRELLO, /* type */
908 0, /* rightshift */
909 1, /* size (0 = byte, 1 = short, 2 = long) */
910 16, /* bitsize */
b34976b6 911 FALSE, /* pc_relative */
3765b1be
RH		 912 0, /* bitpos */
913 complain_overflow_dont, /* complain_on_overflow */
bc1bc43f 914 bfd_elf_generic_reloc, /* special_function */
3765b1be 915 "DTPRELLO", /* name */
b34976b6 916 FALSE, /* partial_inplace */
3765b1be
RH		 917 0xffff, /* src_mask */
918 0xffff, /* dst_mask */
b34976b6 919 FALSE), /* pcrel_offset */
3765b1be
RH		 920
921 /* A 16-bit displacement from DTP to the target. */
922 HOWTO (R_ALPHA_DTPREL16, /* type */
923 0, /* rightshift */
924 1, /* size (0 = byte, 1 = short, 2 = long) */
925 16, /* bitsize */
b34976b6 926 FALSE, /* pc_relative */
3765b1be
RH		 927 0, /* bitpos */
928 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 929 bfd_elf_generic_reloc, /* special_function */
3765b1be 930 "DTPREL16", /* name */
b34976b6 931 FALSE, /* partial_inplace */
3765b1be
RH		 932 0xffff, /* src_mask */
933 0xffff, /* dst_mask */
b34976b6 934 FALSE), /* pcrel_offset */
3765b1be
RH		 935
936 /* Creates a 64-bit offset in the got for the displacement
937 from TP to the target. */
938 HOWTO (R_ALPHA_GOTTPREL, /* type */
939 0, /* rightshift */
940 1, /* size (0 = byte, 1 = short, 2 = long) */
941 16, /* bitsize */
b34976b6 942 FALSE, /* pc_relative */
3765b1be
RH		 943 0, /* bitpos */
944 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 945 bfd_elf_generic_reloc, /* special_function */
3765b1be 946 "GOTTPREL", /* name */
b34976b6 947 FALSE, /* partial_inplace */
3765b1be
RH		 948 0xffff, /* src_mask */
949 0xffff, /* dst_mask */
b34976b6 950 FALSE), /* pcrel_offset */
3765b1be
RH		 951
952 /* A dynamic relocation for a displacement from TP to the target. */
953 HOWTO (R_ALPHA_TPREL64, /* type */
954 0, /* rightshift */
955 4, /* size (0 = byte, 1 = short, 2 = long) */
956 64, /* bitsize */
b34976b6 957 FALSE, /* pc_relative */
3765b1be
RH		 958 0, /* bitpos */
959 complain_overflow_bitfield, /* complain_on_overflow */
bc1bc43f 960 bfd_elf_generic_reloc, /* special_function */
3765b1be 961 "TPREL64", /* name */
b34976b6 962 FALSE, /* partial_inplace */
3765b1be
RH		 963 MINUS_ONE, /* src_mask */
964 MINUS_ONE, /* dst_mask */
b34976b6 965 FALSE), /* pcrel_offset */
3765b1be
RH		 966
967 /* The high 16 bits of the displacement from TP to the target. */
968 HOWTO (R_ALPHA_TPRELHI, /* type */
969 0, /* rightshift */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
971 16, /* bitsize */
b34976b6 972 FALSE, /* pc_relative */
3765b1be
RH		 973 0, /* bitpos */
974 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 975 bfd_elf_generic_reloc, /* special_function */
3765b1be 976 "TPRELHI", /* name */
b34976b6 977 FALSE, /* partial_inplace */
3765b1be
RH		 978 0xffff, /* src_mask */
979 0xffff, /* dst_mask */
b34976b6 980 FALSE), /* pcrel_offset */
3765b1be
RH		 981
982 /* The low 16 bits of the displacement from TP to the target. */
983 HOWTO (R_ALPHA_TPRELLO, /* type */
984 0, /* rightshift */
985 1, /* size (0 = byte, 1 = short, 2 = long) */
986 16, /* bitsize */
b34976b6 987 FALSE, /* pc_relative */
3765b1be
RH		 988 0, /* bitpos */
989 complain_overflow_dont, /* complain_on_overflow */
bc1bc43f 990 bfd_elf_generic_reloc, /* special_function */
3765b1be 991 "TPRELLO", /* name */
b34976b6 992 FALSE, /* partial_inplace */
3765b1be
RH		 993 0xffff, /* src_mask */
994 0xffff, /* dst_mask */
b34976b6 995 FALSE), /* pcrel_offset */
3765b1be
RH		 996
997 /* A 16-bit displacement from TP to the target. */
998 HOWTO (R_ALPHA_TPREL16, /* type */
999 0, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
b34976b6 1002 FALSE, /* pc_relative */
3765b1be
RH		 1003 0, /* bitpos */
1004 complain_overflow_signed, /* complain_on_overflow */
bc1bc43f 1005 bfd_elf_generic_reloc, /* special_function */
3765b1be 1006 "TPREL16", /* name */
b34976b6 1007 FALSE, /* partial_inplace */
3765b1be
RH		 1008 0xffff, /* src_mask */
1009 0xffff, /* dst_mask */
b34976b6 1010 FALSE), /* pcrel_offset */
252b5132
RH		 1011};
1012
252b5132
RH		 1013/* A mapping from BFD reloc types to Alpha ELF reloc types. */
1014
1015struct elf_reloc_map
1016{
1017 bfd_reloc_code_real_type bfd_reloc_val;
1018 int elf_reloc_val;
1019};
1020
1021static const struct elf_reloc_map elf64_alpha_reloc_map[] =
1022{
dfe57ca0
RH		 1023 {BFD_RELOC_NONE, R_ALPHA_NONE},
1024 {BFD_RELOC_32, R_ALPHA_REFLONG},
1025 {BFD_RELOC_64, R_ALPHA_REFQUAD},
1026 {BFD_RELOC_CTOR, R_ALPHA_REFQUAD},
1027 {BFD_RELOC_GPREL32, R_ALPHA_GPREL32},
1028 {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL},
1029 {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE},
1030 {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP},
1031 {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR},
1032 {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT},
1033 {BFD_RELOC_16_PCREL, R_ALPHA_SREL16},
1034 {BFD_RELOC_32_PCREL, R_ALPHA_SREL32},
1035 {BFD_RELOC_64_PCREL, R_ALPHA_SREL64},
1036 {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH},
1037 {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW},
1038 {BFD_RELOC_GPREL16, R_ALPHA_GPREL16},
7793f4d0 1039 {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP},
3765b1be
RH		 1040 {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD},
1041 {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM},
1042 {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64},
1043 {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL},
1044 {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64},
1045 {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI},
1046 {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO},
1047 {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16},
1048 {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL},
1049 {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64},
1050 {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI},
1051 {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO},
1052 {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16},
252b5132
RH		 1053};
1054
1055/* Given a BFD reloc type, return a HOWTO structure. */
1056
1057static reloc_howto_type *
a7519a3c
RH		 1058elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1059 bfd_reloc_code_real_type code)
252b5132
RH		 1060{
1061 const struct elf_reloc_map *i, *e;
1062 i = e = elf64_alpha_reloc_map;
1063 e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map);
1064 for (; i != e; ++i)
1065 {
1066 if (i->bfd_reloc_val == code)
1067 return &elf64_alpha_howto_table[i->elf_reloc_val];
1068 }
1069 return 0;
1070}
1071
157090f7
AM		 1072static reloc_howto_type *
1073elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1074 const char *r_name)
1075{
1076 unsigned int i;
1077
1078 for (i = 0;
1079 i < (sizeof (elf64_alpha_howto_table)
1080 / sizeof (elf64_alpha_howto_table[0]));
1081 i++)
1082 if (elf64_alpha_howto_table[i].name != NULL
1083 && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0)
1084 return &elf64_alpha_howto_table[i];
1085
1086 return NULL;
1087}
1088
252b5132
RH		 1089/* Given an Alpha ELF reloc type, fill in an arelent structure. */
1090
1091static void
a7519a3c
RH		 1092elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
1093 Elf_Internal_Rela *dst)
252b5132 1094{
a7519a3c 1095 unsigned r_type = ELF64_R_TYPE(dst->r_info);
252b5132
RH		 1096 BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max);
1097 cache_ptr->howto = &elf64_alpha_howto_table[r_type];
1098}
3765b1be
RH		 1099
1100/* These two relocations create a two-word entry in the got. */
1101#define alpha_got_entry_size(r_type) \
1102 (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8)
9e756d64
RH		 1103
1104/* This is PT_TLS segment p_vaddr. */
e1918d23
AM		 1105#define alpha_get_dtprel_base(info) \
1106 (elf_hash_table (info)->tls_sec->vma)
9e756d64
RH		 1107
1108/* Main program TLS (whose template starts at PT_TLS p_vaddr)
1109 is assigned offset round(16, PT_TLS p_align). */
e1918d23
AM		 1110#define alpha_get_tprel_base(info) \
1111 (elf_hash_table (info)->tls_sec->vma \
1112 - align_power ((bfd_vma) 16, \
1113 elf_hash_table (info)->tls_sec->alignment_power))
252b5132 1114\f
a7519a3c
RH		 1115/* Handle an Alpha specific section when reading an object file. This
1116 is called when bfd_section_from_shdr finds a section with an unknown
1117 type.
1118 FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
1119 how to. */
252b5132 1120
a7519a3c
RH		 1121static bfd_boolean
1122elf64_alpha_section_from_shdr (bfd *abfd,
1123 Elf_Internal_Shdr *hdr,
1124 const char *name,
1125 int shindex)
252b5132 1126{
a7519a3c
RH		 1127 asection *newsect;
1128
1129 /* There ought to be a place to keep ELF backend specific flags, but
1130 at the moment there isn't one. We just keep track of the
1131 sections by their name, instead. Fortunately, the ABI gives
1132 suggested names for all the MIPS specific sections, so we will
1133 probably get away with this. */
1134 switch (hdr->sh_type)
1135 {
1136 case SHT_ALPHA_DEBUG:
1137 if (strcmp (name, ".mdebug") != 0)
1138 return FALSE;
1139 break;
1140 default:
1141 return FALSE;
1142 }
252b5132 1143
a7519a3c
RH		 1144 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1145 return FALSE;
1146 newsect = hdr->bfd_section;
252b5132 1147
a7519a3c 1148 if (hdr->sh_type == SHT_ALPHA_DEBUG)
252b5132 1149 {
a7519a3c
RH		 1150 if (! bfd_set_section_flags (abfd, newsect,
1151 (bfd_get_section_flags (abfd, newsect)
1152 | SEC_DEBUGGING)))
1153 return FALSE;
252b5132 1154 }
a7519a3c
RH		 1155
1156 return TRUE;
252b5132
RH		 1157}
1158
a7519a3c
RH		 1159/* Convert Alpha specific section flags to bfd internal section flags. */
1160
b34976b6 1161static bfd_boolean
a7519a3c 1162elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
252b5132 1163{
a7519a3c
RH		 1164 if (hdr->sh_flags & SHF_ALPHA_GPREL)
1165 *flags |= SEC_SMALL_DATA;
252b5132 1166
a7519a3c
RH		 1167 return TRUE;
1168}
252b5132 1169
a7519a3c
RH		 1170/* Set the correct type for an Alpha ELF section. We do this by the
1171 section name, which is a hack, but ought to work. */
9e756d64 1172
a7519a3c
RH		 1173static bfd_boolean
1174elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec)
1175{
1176 register const char *name;
1177
1178 name = bfd_get_section_name (abfd, sec);
1179
1180 if (strcmp (name, ".mdebug") == 0)
252b5132 1181 {
a7519a3c
RH		 1182 hdr->sh_type = SHT_ALPHA_DEBUG;
1183 /* In a shared object on Irix 5.3, the .mdebug section has an
1184 entsize of 0. FIXME: Does this matter? */
1185 if ((abfd->flags & DYNAMIC) != 0 )
1186 hdr->sh_entsize = 0;
1187 else
1188 hdr->sh_entsize = 1;
252b5132 1189 }
a7519a3c
RH		 1190 else if ((sec->flags & SEC_SMALL_DATA)
1191 || strcmp (name, ".sdata") == 0
1192 || strcmp (name, ".sbss") == 0
1193 || strcmp (name, ".lit4") == 0
1194 || strcmp (name, ".lit8") == 0)
1195 hdr->sh_flags |= SHF_ALPHA_GPREL;
252b5132 1196
a7519a3c
RH		 1197 return TRUE;
1198}
252b5132 1199
a7519a3c
RH		 1200/* Hook called by the linker routine which adds symbols from an object
1201 file. We use it to put .comm items in .sbss, and not .bss. */
1202
1203static bfd_boolean
1204elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
1205 Elf_Internal_Sym *sym,
1206 const char **namep ATTRIBUTE_UNUSED,
1207 flagword *flagsp ATTRIBUTE_UNUSED,
1208 asection **secp, bfd_vma *valp)
1209{
1210 if (sym->st_shndx == SHN_COMMON
1211 && !info->relocatable
1212 && sym->st_size <= elf_gp_size (abfd))
252b5132 1213 {
a7519a3c
RH		 1214 /* Common symbols less than or equal to -G nn bytes are
1215 automatically put into .sbss. */
ffcb7aff 1216
a7519a3c 1217 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
252b5132 1218
a7519a3c 1219 if (scomm == NULL)
252b5132 1220 {
a7519a3c
RH		 1221 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1222 (SEC_ALLOC
1223 | SEC_IS_COMMON
1224 | SEC_LINKER_CREATED));
1225 if (scomm == NULL)
1226 return FALSE;
1227 }
ffcb7aff 1228
a7519a3c
RH		 1229 *secp = scomm;
1230 *valp = sym->st_size;
1231 }
ffcb7aff 1232
a7519a3c
RH		 1233 return TRUE;
1234}
252b5132 1235
a7519a3c 1236/* Create the .got section. */
252b5132 1237
a7519a3c
RH		 1238static bfd_boolean
1239elf64_alpha_create_got_section (bfd *abfd,
1240 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1241{
85d162e6 1242 flagword flags;
a7519a3c 1243 asection *s;
252b5132 1244
0ffa91dd
NC		 1245 if (! is_alpha_elf (abfd))
1246 return FALSE;
1247
85d162e6
AM		 1248 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1249 | SEC_LINKER_CREATED);
1250 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
a7519a3c
RH		 1251 if (s == NULL
1252 || !bfd_set_section_alignment (abfd, s, 3))
1253 return FALSE;
252b5132 1254
a7519a3c 1255 alpha_elf_tdata (abfd)->got = s;
252b5132 1256
85d162e6
AM		 1257 /* Make sure the object's gotobj is set to itself so that we default
1258 to every object with its own .got. We'll merge .gots later once
1259 we've collected each object's info. */
1260 alpha_elf_tdata (abfd)->gotobj = abfd;
1261
a7519a3c
RH		 1262 return TRUE;
1263}
252b5132 1264
a7519a3c 1265/* Create all the dynamic sections. */
252b5132 1266
a7519a3c
RH		 1267static bfd_boolean
1268elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1269{
1270 asection *s;
85d162e6 1271 flagword flags;
a7519a3c 1272 struct elf_link_hash_entry *h;
252b5132 1273
0ffa91dd
NC		 1274 if (! is_alpha_elf (abfd))
1275 return FALSE;
1276
a7519a3c 1277 /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
252b5132 1278
85d162e6
AM		 1279 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1280 | SEC_LINKER_CREATED
1281 | (elf64_alpha_use_secureplt ? SEC_READONLY : 0));
1282 s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags);
6ec7057a 1283 if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4))
a7519a3c 1284 return FALSE;
252b5132 1285
a7519a3c
RH		 1286 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1287 .plt section. */
7325306f
RS		 1288 h = _bfd_elf_define_linkage_sym (abfd, info, s,
1289 "_PROCEDURE_LINKAGE_TABLE_");
1290 elf_hash_table (info)->hplt = h;
1291 if (h == NULL)
a7519a3c 1292 return FALSE;
d6ad34f6 1293
85d162e6
AM		 1294 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1295 | SEC_LINKER_CREATED | SEC_READONLY);
1296 s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags);
6ec7057a 1297 if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3))
a7519a3c 1298 return FALSE;
252b5132 1299
6ec7057a
RH		 1300 if (elf64_alpha_use_secureplt)
1301 {
85d162e6
AM		 1302 flags = SEC_ALLOC | SEC_LINKER_CREATED;
1303 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
6ec7057a
RH		 1304 if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3))
1305 return FALSE;
1306 }
1307
a7519a3c
RH		 1308 /* We may or may not have created a .got section for this object, but
1309 we definitely havn't done the rest of the work. */
1cd6895c 1310
85d162e6
AM		 1311 if (alpha_elf_tdata(abfd)->gotobj == NULL)
1312 {
1313 if (!elf64_alpha_create_got_section (abfd, info))
1314 return FALSE;
1315 }
1cd6895c 1316
85d162e6
AM		 1317 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1318 | SEC_LINKER_CREATED | SEC_READONLY);
1319 s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags);
a7519a3c
RH		 1320 if (s == NULL
1321 || !bfd_set_section_alignment (abfd, s, 3))
1322 return FALSE;
252b5132 1323
a7519a3c
RH		 1324 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
1325 dynobj's .got section. We don't do this in the linker script
1326 because we don't want to define the symbol if we are not creating
1327 a global offset table. */
d98685ac
AM		 1328 h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got,
1329 "_GLOBAL_OFFSET_TABLE_");
a7519a3c 1330 elf_hash_table (info)->hgot = h;
d98685ac
AM		 1331 if (h == NULL)
1332 return FALSE;
252b5132 1333
a7519a3c 1334 return TRUE;
252b5132 1335}
a7519a3c
RH		 1336\f
1337/* Read ECOFF debugging information from a .mdebug section into a
1338 ecoff_debug_info structure. */
252b5132 1339
a7519a3c
RH		 1340static bfd_boolean
1341elf64_alpha_read_ecoff_info (bfd *abfd, asection *section,
1342 struct ecoff_debug_info *debug)
252b5132 1343{
a7519a3c
RH		 1344 HDRR *symhdr;
1345 const struct ecoff_debug_swap *swap;
1346 char *ext_hdr = NULL;
252b5132 1347
a7519a3c
RH		 1348 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
1349 memset (debug, 0, sizeof (*debug));
252b5132 1350
a7519a3c
RH		 1351 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
1352 if (ext_hdr == NULL && swap->external_hdr_size != 0)
1353 goto error_return;
252b5132 1354
a7519a3c
RH		 1355 if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
1356 swap->external_hdr_size))
1357 goto error_return;
252b5132 1358
a7519a3c
RH		 1359 symhdr = &debug->symbolic_header;
1360 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
252b5132 1361
a7519a3c
RH		 1362 /* The symbolic header contains absolute file offsets and sizes to
1363 read. */
1364#define READ(ptr, offset, count, size, type) \
1365 if (symhdr->count == 0) \
1366 debug->ptr = NULL; \
1367 else \
1368 { \
1369 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
1370 debug->ptr = (type) bfd_malloc (amt); \
1371 if (debug->ptr == NULL) \
1372 goto error_return; \
1373 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
1374 || bfd_bread (debug->ptr, amt, abfd) != amt) \
1375 goto error_return; \
1376 }
fe8bc63d 1377
a7519a3c
RH		 1378 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
1379 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
1380 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
1381 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
1382 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
1383 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
1384 union aux_ext *);
1385 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
1386 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
1387 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
1388 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
1389 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
1390#undef READ
252b5132 1391
a7519a3c 1392 debug->fdr = NULL;
252b5132 1393
a7519a3c 1394 return TRUE;
252b5132 1395
a7519a3c
RH		 1396 error_return:
1397 if (ext_hdr != NULL)
1398 free (ext_hdr);
1399 if (debug->line != NULL)
1400 free (debug->line);
1401 if (debug->external_dnr != NULL)
1402 free (debug->external_dnr);
1403 if (debug->external_pdr != NULL)
1404 free (debug->external_pdr);
1405 if (debug->external_sym != NULL)
1406 free (debug->external_sym);
1407 if (debug->external_opt != NULL)
1408 free (debug->external_opt);
1409 if (debug->external_aux != NULL)
1410 free (debug->external_aux);
1411 if (debug->ss != NULL)
1412 free (debug->ss);
1413 if (debug->ssext != NULL)
1414 free (debug->ssext);
1415 if (debug->external_fdr != NULL)
1416 free (debug->external_fdr);
1417 if (debug->external_rfd != NULL)
1418 free (debug->external_rfd);
1419 if (debug->external_ext != NULL)
1420 free (debug->external_ext);
1421 return FALSE;
252b5132
RH		 1422}
1423
a7519a3c
RH		 1424/* Alpha ELF local labels start with '$'. */
1425
b34976b6 1426static bfd_boolean
a7519a3c 1427elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
252b5132 1428{
a7519a3c
RH		 1429 return name[0] == '$';
1430}
9e756d64 1431
a7519a3c
RH		 1432/* Alpha ELF follows MIPS ELF in using a special find_nearest_line
1433 routine in order to handle the ECOFF debugging information. We
1434 still call this mips_elf_find_line because of the slot
1435 find_line_info in elf_obj_tdata is declared that way. */
d6ad34f6 1436
a7519a3c
RH		 1437struct mips_elf_find_line
1438{
1439 struct ecoff_debug_info d;
1440 struct ecoff_find_line i;
1441};
d6ad34f6 1442
a7519a3c
RH		 1443static bfd_boolean
1444elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols,
1445 bfd_vma offset, const char **filename_ptr,
1446 const char **functionname_ptr,
1447 unsigned int *line_ptr)
1448{
1449 asection *msec;
252b5132 1450
a7519a3c
RH		 1451 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
1452 filename_ptr, functionname_ptr,
1453 line_ptr, 0,
1454 &elf_tdata (abfd)->dwarf2_find_line_info))
b34976b6 1455 return TRUE;
9e756d64 1456
a7519a3c
RH		 1457 msec = bfd_get_section_by_name (abfd, ".mdebug");
1458 if (msec != NULL)
1bbc9cec 1459 {
a7519a3c
RH		 1460 flagword origflags;
1461 struct mips_elf_find_line *fi;
1462 const struct ecoff_debug_swap * const swap =
1463 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
252b5132 1464
a7519a3c
RH		 1465 /* If we are called during a link, alpha_elf_final_link may have
1466 cleared the SEC_HAS_CONTENTS field. We force it back on here
1467 if appropriate (which it normally will be). */
1468 origflags = msec->flags;
1469 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
1470 msec->flags |= SEC_HAS_CONTENTS;
9e756d64 1471
a7519a3c
RH		 1472 fi = elf_tdata (abfd)->find_line_info;
1473 if (fi == NULL)
1474 {
1475 bfd_size_type external_fdr_size;
1476 char *fraw_src;
1477 char *fraw_end;
1478 struct fdr *fdr_ptr;
1479 bfd_size_type amt = sizeof (struct mips_elf_find_line);
9e756d64 1480
a7519a3c
RH		 1481 fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
1482 if (fi == NULL)
1483 {
1484 msec->flags = origflags;
1485 return FALSE;
1486 }
9e756d64 1487
a7519a3c
RH		 1488 if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
1489 {
1490 msec->flags = origflags;
1491 return FALSE;
1492 }
9e756d64 1493
a7519a3c
RH		 1494 /* Swap in the FDR information. */
1495 amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
1496 fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
1497 if (fi->d.fdr == NULL)
1498 {
1499 msec->flags = origflags;
1500 return FALSE;
1501 }
1502 external_fdr_size = swap->external_fdr_size;
1503 fdr_ptr = fi->d.fdr;
1504 fraw_src = (char *) fi->d.external_fdr;
1505 fraw_end = (fraw_src
1506 + fi->d.symbolic_header.ifdMax * external_fdr_size);
1507 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
1508 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
9e756d64 1509
a7519a3c 1510 elf_tdata (abfd)->find_line_info = fi;
9e756d64 1511
a7519a3c
RH		 1512 /* Note that we don't bother to ever free this information.
1513 find_nearest_line is either called all the time, as in
1514 objdump -l, so the information should be saved, or it is
1515 rarely called, as in ld error messages, so the memory
1516 wasted is unimportant. Still, it would probably be a
1517 good idea for free_cached_info to throw it away. */
1518 }
9e756d64 1519
a7519a3c
RH		 1520 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
1521 &fi->i, filename_ptr, functionname_ptr,
1522 line_ptr))
1523 {
1524 msec->flags = origflags;
1525 return TRUE;
1526 }
9e756d64 1527
a7519a3c 1528 msec->flags = origflags;
9e756d64 1529 }
9e756d64 1530
a7519a3c 1531 /* Fall back on the generic ELF find_nearest_line routine. */
9e756d64 1532
a7519a3c
RH		 1533 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
1534 filename_ptr, functionname_ptr,
1535 line_ptr);
9e756d64 1536}
a7519a3c
RH		 1537\f
1538/* Structure used to pass information to alpha_elf_output_extsym. */
9e756d64 1539
a7519a3c 1540struct extsym_info
9e756d64 1541{
a7519a3c
RH		 1542 bfd *abfd;
1543 struct bfd_link_info *info;
1544 struct ecoff_debug_info *debug;
1545 const struct ecoff_debug_swap *swap;
1546 bfd_boolean failed;
1547};
9e756d64 1548
a7519a3c
RH		 1549static bfd_boolean
1550elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data)
1551{
1552 struct extsym_info *einfo = (struct extsym_info *) data;
1553 bfd_boolean strip;
1554 asection *sec, *output_section;
9e756d64 1555
a7519a3c
RH		 1556 if (h->root.indx == -2)
1557 strip = FALSE;
1558 else if ((h->root.def_dynamic
1559 || h->root.ref_dynamic
1560 || h->root.root.type == bfd_link_hash_new)
1561 && !h->root.def_regular
1562 && !h->root.ref_regular)
1563 strip = TRUE;
1564 else if (einfo->info->strip == strip_all
1565 || (einfo->info->strip == strip_some
1566 && bfd_hash_lookup (einfo->info->keep_hash,
1567 h->root.root.root.string,
1568 FALSE, FALSE) == NULL))
1569 strip = TRUE;
1570 else
1571 strip = FALSE;
9e756d64 1572
a7519a3c 1573 if (strip)
b34976b6 1574 return TRUE;
9e756d64 1575
a7519a3c 1576 if (h->esym.ifd == -2)
9e756d64 1577 {
a7519a3c
RH		 1578 h->esym.jmptbl = 0;
1579 h->esym.cobol_main = 0;
1580 h->esym.weakext = 0;
1581 h->esym.reserved = 0;
1582 h->esym.ifd = ifdNil;
1583 h->esym.asym.value = 0;
1584 h->esym.asym.st = stGlobal;
9e756d64 1585
a7519a3c
RH		 1586 if (h->root.root.type != bfd_link_hash_defined
1587 && h->root.root.type != bfd_link_hash_defweak)
1588 h->esym.asym.sc = scAbs;
1589 else
1590 {
1591 const char *name;
9e756d64 1592
a7519a3c
RH		 1593 sec = h->root.root.u.def.section;
1594 output_section = sec->output_section;
9e756d64 1595
a7519a3c
RH		 1596 /* When making a shared library and symbol h is the one from
1597 the another shared library, OUTPUT_SECTION may be null. */
1598 if (output_section == NULL)
1599 h->esym.asym.sc = scUndefined;
1600 else
1601 {
1602 name = bfd_section_name (output_section->owner, output_section);
9e756d64 1603
a7519a3c
RH		 1604 if (strcmp (name, ".text") == 0)
1605 h->esym.asym.sc = scText;
1606 else if (strcmp (name, ".data") == 0)
1607 h->esym.asym.sc = scData;
1608 else if (strcmp (name, ".sdata") == 0)
1609 h->esym.asym.sc = scSData;
1610 else if (strcmp (name, ".rodata") == 0
1611 || strcmp (name, ".rdata") == 0)
1612 h->esym.asym.sc = scRData;
1613 else if (strcmp (name, ".bss") == 0)
1614 h->esym.asym.sc = scBss;
1615 else if (strcmp (name, ".sbss") == 0)
1616 h->esym.asym.sc = scSBss;
1617 else if (strcmp (name, ".init") == 0)
1618 h->esym.asym.sc = scInit;
1619 else if (strcmp (name, ".fini") == 0)
1620 h->esym.asym.sc = scFini;
1621 else
1622 h->esym.asym.sc = scAbs;
1623 }
1624 }
9e756d64 1625
a7519a3c
RH		 1626 h->esym.asym.reserved = 0;
1627 h->esym.asym.index = indexNil;
1628 }
9e756d64 1629
a7519a3c
RH		 1630 if (h->root.root.type == bfd_link_hash_common)
1631 h->esym.asym.value = h->root.root.u.c.size;
1632 else if (h->root.root.type == bfd_link_hash_defined
1633 || h->root.root.type == bfd_link_hash_defweak)
1634 {
1635 if (h->esym.asym.sc == scCommon)
1636 h->esym.asym.sc = scBss;
1637 else if (h->esym.asym.sc == scSCommon)
1638 h->esym.asym.sc = scSBss;
9e756d64 1639
a7519a3c
RH		 1640 sec = h->root.root.u.def.section;
1641 output_section = sec->output_section;
1642 if (output_section != NULL)
1643 h->esym.asym.value = (h->root.root.u.def.value
1644 + sec->output_offset
1645 + output_section->vma);
1646 else
1647 h->esym.asym.value = 0;
1648 }
9e756d64 1649
a7519a3c
RH		 1650 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
1651 h->root.root.root.string,
1652 &h->esym))
1653 {
1654 einfo->failed = TRUE;
1655 return FALSE;
9e756d64
RH		 1656 }
1657
a7519a3c
RH		 1658 return TRUE;
1659}
1660\f
1661/* Search for and possibly create a got entry. */
9e756d64 1662
a7519a3c
RH		 1663static struct alpha_elf_got_entry *
1664get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h,
1665 unsigned long r_type, unsigned long r_symndx,
1666 bfd_vma r_addend)
1667{
1668 struct alpha_elf_got_entry *gotent;
1669 struct alpha_elf_got_entry **slot;
9e756d64 1670
a7519a3c
RH		 1671 if (h)
1672 slot = &h->got_entries;
1673 else
1674 {
1675 /* This is a local .got entry -- record for merge. */
9e756d64 1676
a7519a3c 1677 struct alpha_elf_got_entry **local_got_entries;
9e756d64 1678
a7519a3c
RH		 1679 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
1680 if (!local_got_entries)
1681 {
1682 bfd_size_type size;
1683 Elf_Internal_Shdr *symtab_hdr;
9e756d64 1684
a7519a3c
RH		 1685 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
1686 size = symtab_hdr->sh_info;
1687 size *= sizeof (struct alpha_elf_got_entry *);
9e756d64 1688
a7519a3c
RH		 1689 local_got_entries
1690 = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size);
1691 if (!local_got_entries)
1692 return NULL;
1693
1694 alpha_elf_tdata (abfd)->local_got_entries = local_got_entries;
1695 }
1696
1697 slot = &local_got_entries[r_symndx];
9e756d64
RH		 1698 }
1699
a7519a3c
RH		 1700 for (gotent = *slot; gotent ; gotent = gotent->next)
1701 if (gotent->gotobj == abfd
1702 && gotent->reloc_type == r_type
1703 && gotent->addend == r_addend)
1704 break;
1705
1706 if (!gotent)
9e756d64 1707 {
a7519a3c
RH		 1708 int entry_size;
1709 bfd_size_type amt;
9e756d64 1710
a7519a3c
RH		 1711 amt = sizeof (struct alpha_elf_got_entry);
1712 gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt);
1713 if (!gotent)
1714 return NULL;
9e756d64 1715
a7519a3c
RH		 1716 gotent->gotobj = abfd;
1717 gotent->addend = r_addend;
1718 gotent->got_offset = -1;
6ec7057a 1719 gotent->plt_offset = -1;
a7519a3c
RH		 1720 gotent->use_count = 1;
1721 gotent->reloc_type = r_type;
1722 gotent->reloc_done = 0;
1723 gotent->reloc_xlated = 0;
9e756d64 1724
a7519a3c
RH		 1725 gotent->next = *slot;
1726 *slot = gotent;
9e756d64 1727
a7519a3c
RH		 1728 entry_size = alpha_got_entry_size (r_type);
1729 alpha_elf_tdata (abfd)->total_got_size += entry_size;
1730 if (!h)
1731 alpha_elf_tdata(abfd)->local_got_size += entry_size;
9e756d64 1732 }
a7519a3c
RH		 1733 else
1734 gotent->use_count += 1;
9e756d64 1735
a7519a3c 1736 return gotent;
9e756d64
RH		 1737}
1738
6ec7057a
RH		 1739static bfd_boolean
1740elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah)
1741{
1742 return ((ah->root.type == STT_FUNC
1743 || ah->root.root.type == bfd_link_hash_undefweak
1744 || ah->root.root.type == bfd_link_hash_undefined)
8288a39e
RH		 1745 && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0
1746 && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0);
6ec7057a
RH		 1747}
1748
a7519a3c
RH		 1749/* Handle dynamic relocations when doing an Alpha ELF link. */
1750
b34976b6 1751static bfd_boolean
a7519a3c
RH		 1752elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info,
1753 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 1754{
a7519a3c
RH		 1755 bfd *dynobj;
1756 asection *sreloc;
252b5132 1757 Elf_Internal_Shdr *symtab_hdr;
a7519a3c
RH		 1758 struct alpha_elf_link_hash_entry **sym_hashes;
1759 const Elf_Internal_Rela *rel, *relend;
a7519a3c 1760 bfd_size_type amt;
252b5132 1761
a7519a3c
RH		 1762 if (info->relocatable)
1763 return TRUE;
252b5132 1764
a7519a3c
RH		 1765 /* Don't do anything special with non-loaded, non-alloced sections.
1766 In particular, any relocs in such sections should not affect GOT
1767 and PLT reference counting (ie. we don't allow them to create GOT
1768 or PLT entries), there's no possibility or desire to optimize TLS
1769 relocs, and there's not much point in propagating relocs to shared
1770 libs that the dynamic linker won't relocate. */
1771 if ((sec->flags & SEC_ALLOC) == 0)
b34976b6 1772 return TRUE;
252b5132 1773
0ffa91dd
NC		 1774 BFD_ASSERT (is_alpha_elf (abfd));
1775
1776 dynobj = elf_hash_table (info)->dynobj;
a7519a3c 1777 if (dynobj == NULL)
0ffa91dd 1778 elf_hash_table (info)->dynobj = dynobj = abfd;
252b5132 1779
a7519a3c 1780 sreloc = NULL;
0ffa91dd
NC		 1781 symtab_hdr = &elf_symtab_hdr (abfd);
1782 sym_hashes = alpha_elf_sym_hashes (abfd);
a7519a3c
RH		 1783
1784 relend = relocs + sec->reloc_count;
1785 for (rel = relocs; rel < relend; ++rel)
1786 {
1787 enum {
1788 NEED_GOT = 1,
1789 NEED_GOT_ENTRY = 2,
1790 NEED_DYNREL = 4
1791 };
1792
1793 unsigned long r_symndx, r_type;
1794 struct alpha_elf_link_hash_entry *h;
1795 unsigned int gotent_flags;
1796 bfd_boolean maybe_dynamic;
1797 unsigned int need;
1798 bfd_vma addend;
1799
1800 r_symndx = ELF64_R_SYM (rel->r_info);
1801 if (r_symndx < symtab_hdr->sh_info)
1802 h = NULL;
1803 else
1804 {
1805 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
252b5132 1806
a7519a3c
RH		 1807 while (h->root.root.type == bfd_link_hash_indirect
1808 || h->root.root.type == bfd_link_hash_warning)
1809 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
252b5132 1810
a7519a3c
RH		 1811 h->root.ref_regular = 1;
1812 }
252b5132 1813
a7519a3c
RH		 1814 /* We can only get preliminary data on whether a symbol is
1815 locally or externally defined, as not all of the input files
1816 have yet been processed. Do something with what we know, as
1817 this may help reduce memory usage and processing time later. */
1818 maybe_dynamic = FALSE;
1819 if (h && ((info->shared
1820 && (!info->symbolic
1821 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
1822 || !h->root.def_regular
1823 || h->root.root.type == bfd_link_hash_defweak))
1824 maybe_dynamic = TRUE;
252b5132 1825
a7519a3c
RH		 1826 need = 0;
1827 gotent_flags = 0;
1828 r_type = ELF64_R_TYPE (rel->r_info);
1829 addend = rel->r_addend;
9e756d64 1830
9e756d64
RH		 1831 switch (r_type)
1832 {
1833 case R_ALPHA_LITERAL:
a7519a3c
RH		 1834 need = NEED_GOT | NEED_GOT_ENTRY;
1835
1836 /* Remember how this literal is used from its LITUSEs.
1837 This will be important when it comes to decide if we can
1838 create a .plt entry for a function symbol. */
1839 while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE)
8288a39e 1840 if (rel->r_addend >= 1 && rel->r_addend <= 6)
a7519a3c
RH		 1841 gotent_flags |= 1 << rel->r_addend;
1842 --rel;
1843
1844 /* No LITUSEs -- presumably the address is used somehow. */
1845 if (gotent_flags == 0)
1846 gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
1847 break;
1848
1849 case R_ALPHA_GPDISP:
1850 case R_ALPHA_GPREL16:
1851 case R_ALPHA_GPREL32:
9e756d64
RH		 1852 case R_ALPHA_GPRELHIGH:
1853 case R_ALPHA_GPRELLOW:
a7519a3c
RH		 1854 case R_ALPHA_BRSGP:
1855 need = NEED_GOT;
1856 break;
1857
1858 case R_ALPHA_REFLONG:
1859 case R_ALPHA_REFQUAD:
1860 if (info->shared || maybe_dynamic)
1861 need = NEED_DYNREL;
cc03ec80
RH		 1862 break;
1863
9e756d64 1864 case R_ALPHA_TLSLDM:
cc03ec80 1865 /* The symbol for a TLSLDM reloc is ignored. Collapse the
cf35638d
TS		 1866 reloc to the STN_UNDEF (0) symbol so that they all match. */
1867 r_symndx = STN_UNDEF;
a7519a3c
RH		 1868 h = 0;
1869 maybe_dynamic = FALSE;
1870 /* FALLTHRU */
1871
1872 case R_ALPHA_TLSGD:
1873 case R_ALPHA_GOTDTPREL:
1874 need = NEED_GOT | NEED_GOT_ENTRY;
9e756d64 1875 break;
cc03ec80 1876
a7519a3c
RH		 1877 case R_ALPHA_GOTTPREL:
1878 need = NEED_GOT | NEED_GOT_ENTRY;
1879 gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE;
1880 if (info->shared)
1881 info->flags |= DF_STATIC_TLS;
1882 break;
1883
1884 case R_ALPHA_TPREL64:
1885 if (info->shared || maybe_dynamic)
1886 need = NEED_DYNREL;
1887 if (info->shared)
1888 info->flags |= DF_STATIC_TLS;
1889 break;
252b5132
RH		 1890 }
1891
a7519a3c 1892 if (need & NEED_GOT)
252b5132 1893 {
85d162e6 1894 if (alpha_elf_tdata(abfd)->gotobj == NULL)
6cdc0ccc 1895 {
a7519a3c
RH		 1896 if (!elf64_alpha_create_got_section (abfd, info))
1897 return FALSE;
c328dc3f 1898 }
252b5132 1899 }
252b5132 1900
a7519a3c
RH		 1901 if (need & NEED_GOT_ENTRY)
1902 {
1903 struct alpha_elf_got_entry *gotent;
252b5132 1904
a7519a3c
RH		 1905 gotent = get_got_entry (abfd, h, r_type, r_symndx, addend);
1906 if (!gotent)
1907 return FALSE;
4a67a098 1908
a7519a3c 1909 if (gotent_flags)
cc03ec80 1910 {
a7519a3c
RH		 1911 gotent->flags |= gotent_flags;
1912 if (h)
1913 {
1914 gotent_flags |= h->flags;
1915 h->flags = gotent_flags;
4a67a098 1916
a7519a3c 1917 /* Make a guess as to whether a .plt entry is needed. */
6ec7057a
RH		 1918 /* ??? It appears that we won't make it into
1919 adjust_dynamic_symbol for symbols that remain
1920 totally undefined. Copying this check here means
1921 we can create a plt entry for them too. */
1922 h->root.needs_plt
1923 = (maybe_dynamic && elf64_alpha_want_plt (h));
1924 }
a7519a3c 1925 }
252b5132
RH		 1926 }
1927
a7519a3c 1928 if (need & NEED_DYNREL)
9e756d64 1929 {
a7519a3c
RH		 1930 /* We need to create the section here now whether we eventually
1931 use it or not so that it gets mapped to an output section by
83bac4b0 1932 the linker. If not used, we'll kill it in size_dynamic_sections. */
a7519a3c 1933 if (sreloc == NULL)
9e756d64 1934 {
83bac4b0
NC		 1935 sreloc = _bfd_elf_make_dynamic_reloc_section
1936 (sec, dynobj, 3, abfd, /*rela?*/ TRUE);
1937
a7519a3c 1938 if (sreloc == NULL)
83bac4b0 1939 return FALSE;
9e756d64 1940 }
252b5132 1941
a7519a3c
RH		 1942 if (h)
1943 {
1944 /* Since we havn't seen all of the input symbols yet, we
1945 don't know whether we'll actually need a dynamic relocation
1946 entry for this reloc. So make a record of it. Once we
1947 find out if this thing needs dynamic relocation we'll
1948 expand the relocation sections by the appropriate amount. */
9e756d64 1949
a7519a3c 1950 struct alpha_elf_reloc_entry *rent;
9e756d64 1951
a7519a3c
RH		 1952 for (rent = h->reloc_entries; rent; rent = rent->next)
1953 if (rent->rtype == r_type && rent->srel == sreloc)
1954 break;
252b5132 1955
a7519a3c
RH		 1956 if (!rent)
1957 {
1958 amt = sizeof (struct alpha_elf_reloc_entry);
1959 rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt);
1960 if (!rent)
1961 return FALSE;
252b5132 1962
a7519a3c
RH		 1963 rent->srel = sreloc;
1964 rent->rtype = r_type;
1965 rent->count = 1;
1966 rent->reltext = (sec->flags & SEC_READONLY) != 0;
252b5132 1967
a7519a3c
RH		 1968 rent->next = h->reloc_entries;
1969 h->reloc_entries = rent;
1970 }
1971 else
1972 rent->count++;
1973 }
1974 else if (info->shared)
1975 {
1976 /* If this is a shared library, and the section is to be
1977 loaded into memory, we need a RELATIVE reloc. */
1978 sreloc->size += sizeof (Elf64_External_Rela);
1979 if (sec->flags & SEC_READONLY)
1980 info->flags |= DF_TEXTREL;
1981 }
252b5132
RH		 1982 }
1983 }
1984
b34976b6 1985 return TRUE;
252b5132 1986}
252b5132 1987
e117360e
RH		 1988/* Return the section that should be marked against GC for a given
1989 relocation. */
1990
1991static asection *
1992elf64_alpha_gc_mark_hook (asection *sec, struct bfd_link_info *info,
1993 Elf_Internal_Rela *rel,
1994 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
1995{
1996 /* These relocations don't really reference a symbol. Instead we store
1997 extra data in their addend slot. Ignore the symbol. */
1998 switch (ELF64_R_TYPE (rel->r_info))
1999 {
2000 case R_ALPHA_LITUSE:
2001 case R_ALPHA_GPDISP:
2002 case R_ALPHA_HINT:
2003 return NULL;
2004 }
2005
2006 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2007}
2008
2009/* Update the got entry reference counts for the section being removed. */
2010
2011static bfd_boolean
2012elf64_alpha_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2013 asection *sec, const Elf_Internal_Rela *relocs)
2014{
2015 Elf_Internal_Shdr *symtab_hdr;
2016 struct alpha_elf_link_hash_entry **sym_hashes;
2017 const Elf_Internal_Rela *rel, *relend;
2018
2019 if (info->relocatable)
2020 return TRUE;
2021
2022 symtab_hdr = &elf_symtab_hdr (abfd);
2023 sym_hashes = alpha_elf_sym_hashes (abfd);
2024
2025 relend = relocs + sec->reloc_count;
2026 for (rel = relocs; rel < relend; rel++)
2027 {
2028 unsigned long r_symndx, r_type;
2029 struct alpha_elf_link_hash_entry *h = NULL;
2030 struct alpha_elf_got_entry *gotent;
2031
2032 r_symndx = ELF64_R_SYM (rel->r_info);
2033 if (r_symndx >= symtab_hdr->sh_info)
2034 {
2035 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2036 while (h->root.root.type == bfd_link_hash_indirect
2037 || h->root.root.type == bfd_link_hash_warning)
2038 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
2039 }
2040
2041 r_type = ELF64_R_TYPE (rel->r_info);
2042 switch (r_type)
2043 {
2044 case R_ALPHA_LITERAL:
2045 /* ??? Ignore re-computation of gotent_flags. We're not
2046 carrying a use-count for each bit in that mask. */
2047
2048 case R_ALPHA_TLSGD:
2049 case R_ALPHA_GOTDTPREL:
2050 case R_ALPHA_GOTTPREL:
2051 /* Fetch the got entry from the tables. */
2052 gotent = get_got_entry (abfd, h, r_type, r_symndx, rel->r_addend);
2053
2054 /* The got entry *must* exist, since we should have created it
2055 before during check_relocs. Also note that get_got_entry
2056 assumed this was going to be another use, and so incremented
2057 the use count again. Thus the use count must be at least the
2058 one real use and the "use" we just added. */
2059 if (gotent == NULL || gotent->use_count < 2)
2060 {
2061 abort ();
2062 return FALSE;
2063 }
2064 gotent->use_count -= 2;
2065 break;
2066
2067 default:
2068 break;
2069 }
2070 }
2071
2072 return TRUE;
2073}
2074
a7519a3c
RH		 2075/* Adjust a symbol defined by a dynamic object and referenced by a
2076 regular object. The current definition is in some section of the
2077 dynamic object, but we're not including those sections. We have to
2078 change the definition to something the rest of the link can
2079 understand. */
252b5132 2080
b34976b6 2081static bfd_boolean
a7519a3c
RH		 2082elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info,
2083 struct elf_link_hash_entry *h)
252b5132 2084{
a7519a3c
RH		 2085 bfd *dynobj;
2086 asection *s;
2087 struct alpha_elf_link_hash_entry *ah;
252b5132 2088
a7519a3c
RH		 2089 dynobj = elf_hash_table(info)->dynobj;
2090 ah = (struct alpha_elf_link_hash_entry *)h;
252b5132 2091
a7519a3c 2092 /* Now that we've seen all of the input symbols, finalize our decision
6ec7057a
RH		 2093 about whether this symbol should get a .plt entry. Irritatingly, it
2094 is common for folk to leave undefined symbols in shared libraries,
2095 and they still expect lazy binding; accept undefined symbols in lieu
2096 of STT_FUNC. */
2097 if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah))
252b5132 2098 {
6ec7057a 2099 h->needs_plt = TRUE;
252b5132 2100
a7519a3c
RH		 2101 s = bfd_get_section_by_name(dynobj, ".plt");
2102 if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
2103 return FALSE;
204692d7 2104
6ec7057a
RH		 2105 /* We need one plt entry per got subsection. Delay allocation of
2106 the actual plt entries until size_plt_section, called from
2107 size_dynamic_sections or during relaxation. */
252b5132 2108
a7519a3c
RH		 2109 return TRUE;
2110 }
2111 else
6ec7057a 2112 h->needs_plt = FALSE;
252b5132 2113
a7519a3c
RH		 2114 /* If this is a weak symbol, and there is a real definition, the
2115 processor independent code will have arranged for us to see the
2116 real definition first, and we can just use the same value. */
2117 if (h->u.weakdef != NULL)
252b5132 2118 {
a7519a3c
RH		 2119 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2120 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2121 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2122 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2123 return TRUE;
252b5132 2124 }
a7519a3c
RH		 2125
2126 /* This is a reference to a symbol defined by a dynamic object which
2127 is not a function. The Alpha, since it uses .got entries for all
2128 symbols even in regular objects, does not need the hackery of a
2129 .dynbss section and COPY dynamic relocations. */
252b5132 2130
b34976b6 2131 return TRUE;
252b5132
RH		 2132}
2133
747ffa7b
AM		 2134/* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */
2135
2136static void
2137elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h,
2138 const Elf_Internal_Sym *isym,
2139 bfd_boolean definition,
2140 bfd_boolean dynamic)
2141{
2142 if (!dynamic && definition)
2143 h->other = ((h->other & ELF_ST_VISIBILITY (-1))
2144 | (isym->st_other & ~ELF_ST_VISIBILITY (-1)));
2145}
2146
a7519a3c
RH		 2147/* Symbol versioning can create new symbols, and make our old symbols
2148 indirect to the new ones. Consolidate the got and reloc information
2149 in these situations. */
252b5132 2150
48f4b4f5
RH		 2151static void
2152elf64_alpha_copy_indirect_symbol (struct bfd_link_info *info,
2153 struct elf_link_hash_entry *dir,
2154 struct elf_link_hash_entry *ind)
252b5132 2155{
48f4b4f5
RH		 2156 struct alpha_elf_link_hash_entry *hi
2157 = (struct alpha_elf_link_hash_entry *) ind;
2158 struct alpha_elf_link_hash_entry *hs
2159 = (struct alpha_elf_link_hash_entry *) dir;
252b5132 2160
48f4b4f5
RH		 2161 /* Do the merging in the superclass. */
2162 _bfd_elf_link_hash_copy_indirect(info, dir, ind);
252b5132 2163
a7519a3c 2164 /* Merge the flags. Whee. */
a7519a3c
RH		 2165 hs->flags |= hi->flags;
2166
48f4b4f5
RH		 2167 /* ??? It's unclear to me what's really supposed to happen when
2168 "merging" defweak and defined symbols, given that we don't
2169 actually throw away the defweak. This more-or-less copies
2170 the logic related to got and plt entries in the superclass. */
2171 if (ind->root.type != bfd_link_hash_indirect)
2172 return;
2173
a7519a3c
RH		 2174 /* Merge the .got entries. Cannibalize the old symbol's list in
2175 doing so, since we don't need it anymore. */
2176
2177 if (hs->got_entries == NULL)
2178 hs->got_entries = hi->got_entries;
2179 else
2180 {
2181 struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
2182
2183 gsh = hs->got_entries;
2184 for (gi = hi->got_entries; gi ; gi = gin)
252b5132 2185 {
a7519a3c
RH		 2186 gin = gi->next;
2187 for (gs = gsh; gs ; gs = gs->next)
2188 if (gi->gotobj == gs->gotobj
2189 && gi->reloc_type == gs->reloc_type
2190 && gi->addend == gs->addend)
2191 {
2192 gi->use_count += gs->use_count;
2193 goto got_found;
2194 }
2195 gi->next = hs->got_entries;
2196 hs->got_entries = gi;
2197 got_found:;
252b5132 2198 }
a7519a3c
RH		 2199 }
2200 hi->got_entries = NULL;
252b5132 2201
a7519a3c
RH		 2202 /* And similar for the reloc entries. */
2203
2204 if (hs->reloc_entries == NULL)
2205 hs->reloc_entries = hi->reloc_entries;
2206 else
2207 {
2208 struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
2209
2210 rsh = hs->reloc_entries;
2211 for (ri = hi->reloc_entries; ri ; ri = rin)
2212 {
2213 rin = ri->next;
2214 for (rs = rsh; rs ; rs = rs->next)
2215 if (ri->rtype == rs->rtype && ri->srel == rs->srel)
2216 {
2217 rs->count += ri->count;
2218 goto found_reloc;
2219 }
2220 ri->next = hs->reloc_entries;
2221 hs->reloc_entries = ri;
2222 found_reloc:;
2223 }
252b5132 2224 }
a7519a3c 2225 hi->reloc_entries = NULL;
252b5132
RH		 2226}
2227
a7519a3c 2228/* Is it possible to merge two object file's .got tables? */
252b5132 2229
b34976b6 2230static bfd_boolean
a7519a3c 2231elf64_alpha_can_merge_gots (bfd *a, bfd *b)
252b5132 2232{
a7519a3c
RH		 2233 int total = alpha_elf_tdata (a)->total_got_size;
2234 bfd *bsub;
252b5132 2235
a7519a3c
RH		 2236 /* Trivial quick fallout test. */
2237 if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE)
2238 return TRUE;
252b5132 2239
a7519a3c
RH		 2240 /* By their nature, local .got entries cannot be merged. */
2241 if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE)
b34976b6 2242 return FALSE;
252b5132 2243
a7519a3c
RH		 2244 /* Failing the common trivial comparison, we must effectively
2245 perform the merge. Not actually performing the merge means that
2246 we don't have to store undo information in case we fail. */
2247 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
2248 {
2249 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
2250 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
2251 int i, n;
2252
2253 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
2254 for (i = 0; i < n; ++i)
2255 {
2256 struct alpha_elf_got_entry *ae, *be;
2257 struct alpha_elf_link_hash_entry *h;
2258
2259 h = hashes[i];
2260 while (h->root.root.type == bfd_link_hash_indirect
2261 || h->root.root.type == bfd_link_hash_warning)
2262 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2263
2264 for (be = h->got_entries; be ; be = be->next)
2265 {
2266 if (be->use_count == 0)
2267 continue;
2268 if (be->gotobj != b)
2269 continue;
2270
2271 for (ae = h->got_entries; ae ; ae = ae->next)
2272 if (ae->gotobj == a
2273 && ae->reloc_type == be->reloc_type
2274 && ae->addend == be->addend)
2275 goto global_found;
2276
2277 total += alpha_got_entry_size (be->reloc_type);
2278 if (total > MAX_GOT_SIZE)
2279 return FALSE;
2280 global_found:;
2281 }
2282 }
2283 }
252b5132 2284
b34976b6 2285 return TRUE;
252b5132
RH		 2286}
2287
a7519a3c 2288/* Actually merge two .got tables. */
252b5132 2289
a7519a3c
RH		 2290static void
2291elf64_alpha_merge_gots (bfd *a, bfd *b)
252b5132 2292{
a7519a3c
RH		 2293 int total = alpha_elf_tdata (a)->total_got_size;
2294 bfd *bsub;
252b5132 2295
a7519a3c
RH		 2296 /* Remember local expansion. */
2297 {
2298 int e = alpha_elf_tdata (b)->local_got_size;
2299 total += e;
2300 alpha_elf_tdata (a)->local_got_size += e;
2301 }
252b5132 2302
a7519a3c
RH		 2303 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
2304 {
2305 struct alpha_elf_got_entry **local_got_entries;
2306 struct alpha_elf_link_hash_entry **hashes;
2307 Elf_Internal_Shdr *symtab_hdr;
2308 int i, n;
252b5132 2309
a7519a3c
RH		 2310 /* Let the local .got entries know they are part of a new subsegment. */
2311 local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
2312 if (local_got_entries)
2313 {
2314 n = elf_tdata (bsub)->symtab_hdr.sh_info;
2315 for (i = 0; i < n; ++i)
2316 {
2317 struct alpha_elf_got_entry *ent;
2318 for (ent = local_got_entries[i]; ent; ent = ent->next)
2319 ent->gotobj = a;
2320 }
2321 }
252b5132 2322
a7519a3c
RH		 2323 /* Merge the global .got entries. */
2324 hashes = alpha_elf_sym_hashes (bsub);
2325 symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
252b5132 2326
a7519a3c
RH		 2327 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
2328 for (i = 0; i < n; ++i)
2329 {
2330 struct alpha_elf_got_entry *ae, *be, **pbe, **start;
2331 struct alpha_elf_link_hash_entry *h;
252b5132 2332
a7519a3c
RH		 2333 h = hashes[i];
2334 while (h->root.root.type == bfd_link_hash_indirect
2335 || h->root.root.type == bfd_link_hash_warning)
2336 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
252b5132 2337
a7519a3c
RH		 2338 pbe = start = &h->got_entries;
2339 while ((be = *pbe) != NULL)
2340 {
2341 if (be->use_count == 0)
2342 {
2343 *pbe = be->next;
2344 memset (be, 0xa5, sizeof (*be));
2345 goto kill;
2346 }
2347 if (be->gotobj != b)
2348 goto next;
2349
2350 for (ae = *start; ae ; ae = ae->next)
2351 if (ae->gotobj == a
2352 && ae->reloc_type == be->reloc_type
2353 && ae->addend == be->addend)
2354 {
2355 ae->flags |= be->flags;
2356 ae->use_count += be->use_count;
2357 *pbe = be->next;
2358 memset (be, 0xa5, sizeof (*be));
2359 goto kill;
2360 }
2361 be->gotobj = a;
2362 total += alpha_got_entry_size (be->reloc_type);
252b5132 2363
a7519a3c
RH		 2364 next:;
2365 pbe = &be->next;
2366 kill:;
2367 }
2368 }
252b5132 2369
a7519a3c
RH		 2370 alpha_elf_tdata (bsub)->gotobj = a;
2371 }
2372 alpha_elf_tdata (a)->total_got_size = total;
252b5132 2373
a7519a3c
RH		 2374 /* Merge the two in_got chains. */
2375 {
2376 bfd *next;
252b5132 2377
a7519a3c
RH		 2378 bsub = a;
2379 while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
2380 bsub = next;
252b5132 2381
a7519a3c
RH		 2382 alpha_elf_tdata (bsub)->in_got_link_next = b;
2383 }
252b5132 2384}
a7519a3c
RH		 2385
2386/* Calculate the offsets for the got entries. */
252b5132 2387
b34976b6 2388static bfd_boolean
a7519a3c
RH		 2389elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h,
2390 PTR arg ATTRIBUTE_UNUSED)
252b5132 2391{
a7519a3c 2392 struct alpha_elf_got_entry *gotent;
252b5132 2393
a7519a3c
RH		 2394 for (gotent = h->got_entries; gotent; gotent = gotent->next)
2395 if (gotent->use_count > 0)
2396 {
2397 struct alpha_elf_obj_tdata *td;
2398 bfd_size_type *plge;
252b5132 2399
a7519a3c 2400 td = alpha_elf_tdata (gotent->gotobj);
a7519a3c
RH		 2401 plge = &td->got->size;
2402 gotent->got_offset = *plge;
2403 *plge += alpha_got_entry_size (gotent->reloc_type);
2404 }
252b5132 2405
6ec7057a 2406 return TRUE;
a7519a3c 2407}
252b5132 2408
a7519a3c
RH		 2409static void
2410elf64_alpha_calc_got_offsets (struct bfd_link_info *info)
2411{
4dfe6ac6
NC		 2412 bfd *i, *got_list;
2413 struct alpha_elf_link_hash_table * htab;
2414
2415 htab = alpha_elf_hash_table (info);
2416 if (htab == NULL)
2417 return;
2418 got_list = htab->got_list;
252b5132 2419
a7519a3c
RH		 2420 /* First, zero out the .got sizes, as we may be recalculating the
2421 .got after optimizing it. */
2422 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2423 alpha_elf_tdata(i)->got->size = 0;
252b5132 2424
a7519a3c 2425 /* Next, fill in the offsets for all the global entries. */
4dfe6ac6 2426 alpha_elf_link_hash_traverse (htab,
a7519a3c
RH		 2427 elf64_alpha_calc_got_offsets_for_symbol,
2428 NULL);
252b5132 2429
a7519a3c
RH		 2430 /* Finally, fill in the offsets for the local entries. */
2431 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2432 {
2433 bfd_size_type got_offset = alpha_elf_tdata(i)->got->size;
2434 bfd *j;
252b5132 2435
a7519a3c
RH		 2436 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
2437 {
2438 struct alpha_elf_got_entry **local_got_entries, *gotent;
2439 int k, n;
252b5132 2440
a7519a3c
RH		 2441 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
2442 if (!local_got_entries)
2443 continue;
252b5132 2444
a7519a3c
RH		 2445 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
2446 for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
2447 if (gotent->use_count > 0)
2448 {
2449 gotent->got_offset = got_offset;
2450 got_offset += alpha_got_entry_size (gotent->reloc_type);
2451 }
2452 }
252b5132 2453
a7519a3c
RH		 2454 alpha_elf_tdata(i)->got->size = got_offset;
2455 }
2456}
252b5132 2457
a7519a3c 2458/* Constructs the gots. */
252b5132 2459
b34976b6 2460static bfd_boolean
a7519a3c 2461elf64_alpha_size_got_sections (struct bfd_link_info *info)
252b5132 2462{
a7519a3c 2463 bfd *i, *got_list, *cur_got_obj = NULL;
4dfe6ac6 2464 struct alpha_elf_link_hash_table * htab;
252b5132 2465
4dfe6ac6
NC		 2466 htab = alpha_elf_hash_table (info);
2467 if (htab == NULL)
2468 return FALSE;
2469 got_list = htab->got_list;
95404643 2470
a7519a3c
RH		 2471 /* On the first time through, pretend we have an existing got list
2472 consisting of all of the input files. */
2473 if (got_list == NULL)
252b5132 2474 {
a7519a3c 2475 for (i = info->input_bfds; i ; i = i->link_next)
252b5132 2476 {
0ffa91dd
NC		 2477 bfd *this_got;
2478
2479 if (! is_alpha_elf (i))
2480 continue;
2481
2482 this_got = alpha_elf_tdata (i)->gotobj;
a7519a3c
RH		 2483 if (this_got == NULL)
2484 continue;
252b5132 2485
a7519a3c
RH		 2486 /* We are assuming no merging has yet occurred. */
2487 BFD_ASSERT (this_got == i);
252b5132 2488
a7519a3c 2489 if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE)
252b5132 2490 {
a7519a3c
RH		 2491 /* Yikes! A single object file has too many entries. */
2492 (*_bfd_error_handler)
2493 (_("%B: .got subsegment exceeds 64K (size %d)"),
2494 i, alpha_elf_tdata (this_got)->total_got_size);
b34976b6 2495 return FALSE;
252b5132 2496 }
252b5132 2497
a7519a3c
RH		 2498 if (got_list == NULL)
2499 got_list = this_got;
2500 else
2501 alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
2502 cur_got_obj = this_got;
252b5132
RH		 2503 }
2504
a7519a3c
RH		 2505 /* Strange degenerate case of no got references. */
2506 if (got_list == NULL)
2507 return TRUE;
2508
4dfe6ac6 2509 htab->got_list = got_list;
a7519a3c
RH		 2510 }
2511
2512 cur_got_obj = got_list;
0ffa91dd
NC		 2513 if (cur_got_obj == NULL)
2514 return FALSE;
2515
a7519a3c
RH		 2516 i = alpha_elf_tdata(cur_got_obj)->got_link_next;
2517 while (i != NULL)
2518 {
2519 if (elf64_alpha_can_merge_gots (cur_got_obj, i))
252b5132 2520 {
a7519a3c 2521 elf64_alpha_merge_gots (cur_got_obj, i);
252b5132 2522
a7519a3c
RH		 2523 alpha_elf_tdata(i)->got->size = 0;
2524 i = alpha_elf_tdata(i)->got_link_next;
2525 alpha_elf_tdata(cur_got_obj)->got_link_next = i;
a7519a3c
RH		 2526 }
2527 else
2528 {
2529 cur_got_obj = i;
2530 i = alpha_elf_tdata(i)->got_link_next;
2531 }
252b5132
RH		 2532 }
2533
a7519a3c
RH		 2534 /* Once the gots have been merged, fill in the got offsets for
2535 everything therein. */
4a828aab 2536 elf64_alpha_calc_got_offsets (info);
252b5132 2537
a7519a3c 2538 return TRUE;
252b5132 2539}
252b5132 2540
b34976b6 2541static bfd_boolean
a7519a3c 2542elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data)
252b5132 2543{
a7519a3c
RH		 2544 asection *splt = (asection *) data;
2545 struct alpha_elf_got_entry *gotent;
6ec7057a 2546 bfd_boolean saw_one = FALSE;
252b5132 2547
a7519a3c
RH		 2548 /* If we didn't need an entry before, we still don't. */
2549 if (!h->root.needs_plt)
2550 return TRUE;
e92d460e 2551
6ec7057a 2552 /* For each LITERAL got entry still in use, allocate a plt entry. */
a7519a3c
RH		 2553 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
2554 if (gotent->reloc_type == R_ALPHA_LITERAL
2555 && gotent->use_count > 0)
6ec7057a
RH		 2556 {
2557 if (splt->size == 0)
2558 splt->size = PLT_HEADER_SIZE;
2559 gotent->plt_offset = splt->size;
2560 splt->size += PLT_ENTRY_SIZE;
2561 saw_one = TRUE;
2562 }
a7519a3c 2563
6ec7057a
RH		 2564 /* If there weren't any, there's no longer a need for the PLT entry. */
2565 if (!saw_one)
2566 h->root.needs_plt = FALSE;
a7519a3c
RH		 2567
2568 return TRUE;
2569}
2570
4a828aab
RH		 2571/* Called from relax_section to rebuild the PLT in light of potential changes
2572 in the function's status. */
a7519a3c 2573
4a828aab 2574static void
a7519a3c
RH		 2575elf64_alpha_size_plt_section (struct bfd_link_info *info)
2576{
6ec7057a 2577 asection *splt, *spltrel, *sgotplt;
a7519a3c
RH		 2578 unsigned long entries;
2579 bfd *dynobj;
4dfe6ac6
NC		 2580 struct alpha_elf_link_hash_table * htab;
2581
2582 htab = alpha_elf_hash_table (info);
2583 if (htab == NULL)
2584 return;
a7519a3c
RH		 2585
2586 dynobj = elf_hash_table(info)->dynobj;
6ec7057a 2587 splt = bfd_get_section_by_name (dynobj, ".plt");
a7519a3c 2588 if (splt == NULL)
4a828aab 2589 return;
252b5132 2590
a7519a3c 2591 splt->size = 0;
252b5132 2592
4dfe6ac6 2593 alpha_elf_link_hash_traverse (htab,
a7519a3c 2594 elf64_alpha_size_plt_section_1, splt);
e92d460e 2595
a7519a3c
RH		 2596 /* Every plt entry requires a JMP_SLOT relocation. */
2597 spltrel = bfd_get_section_by_name (dynobj, ".rela.plt");
4a828aab 2598 entries = 0;
a7519a3c 2599 if (splt->size)
6ec7057a
RH		 2600 {
2601 if (elf64_alpha_use_secureplt)
2602 entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE;
2603 else
2604 entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE;
2605 }
a7519a3c 2606 spltrel->size = entries * sizeof (Elf64_External_Rela);
e92d460e 2607
6ec7057a
RH		 2608 /* When using the secureplt, we need two words somewhere in the data
2609 segment for the dynamic linker to tell us where to go. This is the
2610 entire contents of the .got.plt section. */
2611 if (elf64_alpha_use_secureplt)
2612 {
2613 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2614 sgotplt->size = entries ? 16 : 0;
2615 }
a7519a3c 2616}
e92d460e 2617
a7519a3c
RH		 2618static bfd_boolean
2619elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2620 struct bfd_link_info *info)
2621{
2622 bfd *i;
4dfe6ac6 2623 struct alpha_elf_link_hash_table * htab;
252b5132 2624
a7519a3c
RH		 2625 if (info->relocatable)
2626 return TRUE;
252b5132 2627
4dfe6ac6
NC		 2628 htab = alpha_elf_hash_table (info);
2629 if (htab == NULL)
2630 return FALSE;
2631
a7519a3c
RH		 2632 if (!elf64_alpha_size_got_sections (info))
2633 return FALSE;
252b5132 2634
a7519a3c 2635 /* Allocate space for all of the .got subsections. */
4dfe6ac6 2636 i = htab->got_list;
a7519a3c 2637 for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
252b5132 2638 {
a7519a3c
RH		 2639 asection *s = alpha_elf_tdata(i)->got;
2640 if (s->size > 0)
2641 {
2642 s->contents = (bfd_byte *) bfd_zalloc (i, s->size);
2643 if (s->contents == NULL)
2644 return FALSE;
2645 }
252b5132
RH		 2646 }
2647
b34976b6 2648 return TRUE;
252b5132 2649}
3765b1be 2650
a7519a3c 2651/* The number of dynamic relocations required by a static relocation. */
3765b1be 2652
a7519a3c
RH		 2653static int
2654alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared)
2655{
2656 switch (r_type)
3765b1be 2657 {
a7519a3c
RH		 2658 /* May appear in GOT entries. */
2659 case R_ALPHA_TLSGD:
2660 return (dynamic ? 2 : shared ? 1 : 0);
2661 case R_ALPHA_TLSLDM:
2662 return shared;
2663 case R_ALPHA_LITERAL:
2664 case R_ALPHA_GOTTPREL:
2665 return dynamic || shared;
2666 case R_ALPHA_GOTDTPREL:
2667 return dynamic;
3765b1be 2668
a7519a3c
RH		 2669 /* May appear in data sections. */
2670 case R_ALPHA_REFLONG:
2671 case R_ALPHA_REFQUAD:
2672 case R_ALPHA_TPREL64:
2673 return dynamic || shared;
3765b1be 2674
a7519a3c
RH		 2675 /* Everything else is illegal. We'll issue an error during
2676 relocate_section. */
2677 default:
2678 return 0;
2679 }
2680}
3765b1be 2681
a7519a3c 2682/* Work out the sizes of the dynamic relocation entries. */
3765b1be 2683
a7519a3c
RH		 2684static bfd_boolean
2685elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h,
2686 struct bfd_link_info *info)
2687{
2688 bfd_boolean dynamic;
2689 struct alpha_elf_reloc_entry *relent;
2690 unsigned long entries;
3765b1be 2691
a7519a3c
RH		 2692 /* If the symbol was defined as a common symbol in a regular object
2693 file, and there was no definition in any dynamic object, then the
2694 linker will have allocated space for the symbol in a common
2695 section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
2696 set. This is done for dynamic symbols in
2697 elf_adjust_dynamic_symbol but this is not done for non-dynamic
2698 symbols, somehow. */
2699 if (!h->root.def_regular
2700 && h->root.ref_regular
2701 && !h->root.def_dynamic
2702 && (h->root.root.type == bfd_link_hash_defined
2703 || h->root.root.type == bfd_link_hash_defweak)
2704 && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
2705 h->root.def_regular = 1;
3765b1be 2706
a7519a3c
RH		 2707 /* If the symbol is dynamic, we'll need all the relocations in their
2708 natural form. If this is a shared object, and it has been forced
2709 local, we'll need the same number of RELATIVE relocations. */
2710 dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
3765b1be 2711
a7519a3c
RH		 2712 /* If the symbol is a hidden undefined weak, then we never have any
2713 relocations. Avoid the loop which may want to add RELATIVE relocs
2714 based on info->shared. */
2715 if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
2716 return TRUE;
2717
2718 for (relent = h->reloc_entries; relent; relent = relent->next)
3765b1be 2719 {
a7519a3c
RH		 2720 entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic,
2721 info->shared);
2722 if (entries)
2723 {
2724 relent->srel->size +=
2725 entries * sizeof (Elf64_External_Rela) * relent->count;
2726 if (relent->reltext)
2727 info->flags |= DT_TEXTREL;
2728 }
2729 }
3765b1be 2730
a7519a3c
RH		 2731 return TRUE;
2732}
3765b1be 2733
a7519a3c
RH		 2734/* Subroutine of elf64_alpha_size_rela_got_section for doing the
2735 global symbols. */
3765b1be 2736
a7519a3c
RH		 2737static bfd_boolean
2738elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h,
2739 struct bfd_link_info *info)
2740{
2741 bfd_boolean dynamic;
2742 struct alpha_elf_got_entry *gotent;
2743 unsigned long entries;
3765b1be 2744
6ec7057a
RH		 2745 /* If we're using a plt for this symbol, then all of its relocations
2746 for its got entries go into .rela.plt. */
2747 if (h->root.needs_plt)
2748 return TRUE;
2749
a7519a3c
RH		 2750 /* If the symbol is dynamic, we'll need all the relocations in their
2751 natural form. If this is a shared object, and it has been forced
2752 local, we'll need the same number of RELATIVE relocations. */
2753 dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
2754
2755 /* If the symbol is a hidden undefined weak, then we never have any
2756 relocations. Avoid the loop which may want to add RELATIVE relocs
2757 based on info->shared. */
2758 if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
2759 return TRUE;
2760
2761 entries = 0;
2762 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
2763 if (gotent->use_count > 0)
2764 entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type,
2765 dynamic, info->shared);
2766
a7519a3c
RH		 2767 if (entries > 0)
2768 {
2769 bfd *dynobj = elf_hash_table(info)->dynobj;
2770 asection *srel = bfd_get_section_by_name (dynobj, ".rela.got");
2771 BFD_ASSERT (srel != NULL);
2772 srel->size += sizeof (Elf64_External_Rela) * entries;
3765b1be 2773 }
3765b1be 2774
a7519a3c 2775 return TRUE;
3765b1be
RH		 2776}
2777
a7519a3c 2778/* Set the sizes of the dynamic relocation sections. */
252b5132 2779
4a828aab 2780static void
a7519a3c 2781elf64_alpha_size_rela_got_section (struct bfd_link_info *info)
252b5132 2782{
a7519a3c
RH		 2783 unsigned long entries;
2784 bfd *i, *dynobj;
2785 asection *srel;
4dfe6ac6
NC		 2786 struct alpha_elf_link_hash_table * htab;
2787
2788 htab = alpha_elf_hash_table (info);
2789 if (htab == NULL)
2790 return;
252b5132 2791
a7519a3c
RH		 2792 /* Shared libraries often require RELATIVE relocs, and some relocs
2793 require attention for the main application as well. */
252b5132 2794
a7519a3c 2795 entries = 0;
4dfe6ac6 2796 for (i = htab->got_list;
a7519a3c
RH		 2797 i ; i = alpha_elf_tdata(i)->got_link_next)
2798 {
2799 bfd *j;
3241278a 2800
a7519a3c
RH		 2801 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
2802 {
2803 struct alpha_elf_got_entry **local_got_entries, *gotent;
2804 int k, n;
252b5132 2805
a7519a3c
RH		 2806 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
2807 if (!local_got_entries)
2808 continue;
252b5132 2809
a7519a3c
RH		 2810 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
2811 for (gotent = local_got_entries[k];
2812 gotent ; gotent = gotent->next)
2813 if (gotent->use_count > 0)
2814 entries += (alpha_dynamic_entries_for_reloc
2815 (gotent->reloc_type, 0, info->shared));
2816 }
2817 }
3765b1be 2818
a7519a3c
RH		 2819 dynobj = elf_hash_table(info)->dynobj;
2820 srel = bfd_get_section_by_name (dynobj, ".rela.got");
2821 if (!srel)
2822 {
2823 BFD_ASSERT (entries == 0);
4a828aab 2824 return;
a7519a3c
RH		 2825 }
2826 srel->size = sizeof (Elf64_External_Rela) * entries;
252b5132 2827
a7519a3c 2828 /* Now do the non-local symbols. */
4dfe6ac6 2829 alpha_elf_link_hash_traverse (htab,
a7519a3c 2830 elf64_alpha_size_rela_got_1, info);
a7519a3c 2831}
252b5132 2832
a7519a3c 2833/* Set the sizes of the dynamic sections. */
3765b1be 2834
a7519a3c
RH		 2835static bfd_boolean
2836elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2837 struct bfd_link_info *info)
2838{
2839 bfd *dynobj;
2840 asection *s;
2841 bfd_boolean relplt;
4dfe6ac6
NC		 2842 struct alpha_elf_link_hash_table * htab;
2843
2844 htab = alpha_elf_hash_table (info);
2845 if (htab == NULL)
2846 return FALSE;
3765b1be 2847
a7519a3c
RH		 2848 dynobj = elf_hash_table(info)->dynobj;
2849 BFD_ASSERT(dynobj != NULL);
252b5132 2850
a7519a3c
RH		 2851 if (elf_hash_table (info)->dynamic_sections_created)
2852 {
2853 /* Set the contents of the .interp section to the interpreter. */
2854 if (info->executable)
252b5132 2855 {
a7519a3c
RH		 2856 s = bfd_get_section_by_name (dynobj, ".interp");
2857 BFD_ASSERT (s != NULL);
2858 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2859 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2860 }
3765b1be 2861
a7519a3c
RH		 2862 /* Now that we've seen all of the input files, we can decide which
2863 symbols need dynamic relocation entries and which don't. We've
2864 collected information in check_relocs that we can now apply to
2865 size the dynamic relocation sections. */
4dfe6ac6 2866 alpha_elf_link_hash_traverse (htab,
a7519a3c 2867 elf64_alpha_calc_dynrel_sizes, info);
252b5132 2868
a7519a3c 2869 elf64_alpha_size_rela_got_section (info);
6ec7057a 2870 elf64_alpha_size_plt_section (info);
a7519a3c
RH		 2871 }
2872 /* else we're not dynamic and by definition we don't need such things. */
3765b1be 2873
a7519a3c
RH		 2874 /* The check_relocs and adjust_dynamic_symbol entry points have
2875 determined the sizes of the various dynamic sections. Allocate
2876 memory for them. */
2877 relplt = FALSE;
2878 for (s = dynobj->sections; s != NULL; s = s->next)
2879 {
2880 const char *name;
3765b1be 2881
a7519a3c
RH		 2882 if (!(s->flags & SEC_LINKER_CREATED))
2883 continue;
cc03ec80 2884
a7519a3c
RH		 2885 /* It's OK to base decisions on the section name, because none
2886 of the dynobj section names depend upon the input files. */
2887 name = bfd_get_section_name (dynobj, s);
3765b1be 2888
0112cd26 2889 if (CONST_STRNEQ (name, ".rela"))
3765b1be 2890 {
c456f082 2891 if (s->size != 0)
a7519a3c 2892 {
c456f082 2893 if (strcmp (name, ".rela.plt") == 0)
a7519a3c 2894 relplt = TRUE;
252b5132 2895
a7519a3c
RH		 2896 /* We use the reloc_count field as a counter if we need
2897 to copy relocs into the output file. */
2898 s->reloc_count = 0;
252b5132 2899 }
3765b1be 2900 }
0112cd26 2901 else if (! CONST_STRNEQ (name, ".got")
c456f082
AM		 2902 && strcmp (name, ".plt") != 0
2903 && strcmp (name, ".dynbss") != 0)
3765b1be 2904 {
a7519a3c
RH		 2905 /* It's not one of our dynamic sections, so don't allocate space. */
2906 continue;
2907 }
252b5132 2908
c456f082
AM		 2909 if (s->size == 0)
2910 {
2911 /* If we don't need this section, strip it from the output file.
2912 This is to handle .rela.bss and .rela.plt. We must create it
2913 in create_dynamic_sections, because it must be created before
2914 the linker maps input sections to output sections. The
2915 linker does that before adjust_dynamic_symbol is called, and
2916 it is that function which decides whether anything needs to
2917 go into these sections. */
6452a567
RH		 2918 if (!CONST_STRNEQ (name, ".got"))
2919 s->flags |= SEC_EXCLUDE;
c456f082
AM		 2920 }
2921 else if ((s->flags & SEC_HAS_CONTENTS) != 0)
a7519a3c
RH		 2922 {
2923 /* Allocate memory for the section contents. */
2924 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 2925 if (s->contents == NULL)
b34976b6 2926 return FALSE;
a7519a3c
RH		 2927 }
2928 }
3765b1be 2929
a7519a3c
RH		 2930 if (elf_hash_table (info)->dynamic_sections_created)
2931 {
2932 /* Add some entries to the .dynamic section. We fill in the
2933 values later, in elf64_alpha_finish_dynamic_sections, but we
2934 must add the entries now so that we get the correct size for
2935 the .dynamic section. The DT_DEBUG entry is filled in by the
2936 dynamic linker and used by the debugger. */
2937#define add_dynamic_entry(TAG, VAL) \
2938 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3765b1be 2939
a7519a3c
RH		 2940 if (info->executable)
2941 {
2942 if (!add_dynamic_entry (DT_DEBUG, 0))
2943 return FALSE;
3765b1be
RH		 2944 }
2945
a7519a3c 2946 if (relplt)
3765b1be 2947 {
a7519a3c
RH		 2948 if (!add_dynamic_entry (DT_PLTGOT, 0)
2949 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2950 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2951 || !add_dynamic_entry (DT_JMPREL, 0))
2952 return FALSE;
6ec7057a
RH		 2953
2954 if (elf64_alpha_use_secureplt
2955 && !add_dynamic_entry (DT_ALPHA_PLTRO, 1))
2956 return FALSE;
a7519a3c 2957 }
252b5132 2958
a7519a3c
RH		 2959 if (!add_dynamic_entry (DT_RELA, 0)
2960 || !add_dynamic_entry (DT_RELASZ, 0)
2961 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2962 return FALSE;
2963
2964 if (info->flags & DF_TEXTREL)
2965 {
2966 if (!add_dynamic_entry (DT_TEXTREL, 0))
2967 return FALSE;
252b5132
RH		 2968 }
2969 }
a7519a3c 2970#undef add_dynamic_entry
252b5132 2971
b34976b6 2972 return TRUE;
252b5132 2973}
a7519a3c
RH		 2974\f
2975/* These functions do relaxation for Alpha ELF.
252b5132 2976
a7519a3c
RH		 2977 Currently I'm only handling what I can do with existing compiler
2978 and assembler support, which means no instructions are removed,
2979 though some may be nopped. At this time GCC does not emit enough
2980 information to do all of the relaxing that is possible. It will
2981 take some not small amount of work for that to happen.
252b5132 2982
a7519a3c
RH		 2983 There are a couple of interesting papers that I once read on this
2984 subject, that I cannot find references to at the moment, that
2985 related to Alpha in particular. They are by David Wall, then of
2986 DEC WRL. */
252b5132 2987
a7519a3c
RH		 2988struct alpha_relax_info
2989{
2990 bfd *abfd;
2991 asection *sec;
2992 bfd_byte *contents;
2993 Elf_Internal_Shdr *symtab_hdr;
2994 Elf_Internal_Rela *relocs, *relend;
2995 struct bfd_link_info *link_info;
2996 bfd_vma gp;
2997 bfd *gotobj;
2998 asection *tsec;
2999 struct alpha_elf_link_hash_entry *h;
3000 struct alpha_elf_got_entry **first_gotent;
3001 struct alpha_elf_got_entry *gotent;
3002 bfd_boolean changed_contents;
3003 bfd_boolean changed_relocs;
3004 unsigned char other;
3005};
252b5132 3006
a7519a3c
RH		 3007static Elf_Internal_Rela *
3008elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel,
3009 Elf_Internal_Rela *relend,
3010 bfd_vma offset, int type)
3011{
3012 while (rel < relend)
252b5132 3013 {
a7519a3c
RH		 3014 if (rel->r_offset == offset
3015 && ELF64_R_TYPE (rel->r_info) == (unsigned int) type)
3016 return rel;
3017 ++rel;
3018 }
3019 return NULL;
3020}
252b5132 3021
a7519a3c
RH		 3022static bfd_boolean
3023elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval,
3024 Elf_Internal_Rela *irel, unsigned long r_type)
3025{
3026 unsigned int insn;
3027 bfd_signed_vma disp;
252b5132 3028
a7519a3c
RH		 3029 /* Get the instruction. */
3030 insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
252b5132 3031
a7519a3c
RH		 3032 if (insn >> 26 != OP_LDQ)
3033 {
3034 reloc_howto_type *howto = elf64_alpha_howto_table + r_type;
3035 ((*_bfd_error_handler)
3036 ("%B: %A+0x%lx: warning: %s relocation against unexpected insn",
3037 info->abfd, info->sec,
3038 (unsigned long) irel->r_offset, howto->name));
3039 return TRUE;
3040 }
252b5132 3041
a7519a3c
RH		 3042 /* Can't relax dynamic symbols. */
3043 if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
3044 return TRUE;
252b5132 3045
a7519a3c
RH		 3046 /* Can't use local-exec relocations in shared libraries. */
3047 if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared)
3048 return TRUE;
252b5132 3049
a7519a3c
RH		 3050 if (r_type == R_ALPHA_LITERAL)
3051 {
3052 /* Look for nice constant addresses. This includes the not-uncommon
3053 special case of 0 for undefweak symbols. */
3054 if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak)
3055 || (!info->link_info->shared
3056 && (symval >= (bfd_vma)-0x8000 || symval < 0x8000)))
3057 {
3058 disp = 0;
3059 insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
3060 insn |= (symval & 0xffff);
3061 r_type = R_ALPHA_NONE;
3062 }
3063 else
3064 {
3065 disp = symval - info->gp;
3066 insn = (OP_LDA << 26) | (insn & 0x03ff0000);
3067 r_type = R_ALPHA_GPREL16;
3068 }
252b5132
RH		 3069 }
3070 else
252b5132 3071 {
a7519a3c 3072 bfd_vma dtp_base, tp_base;
252b5132 3073
a7519a3c
RH		 3074 BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
3075 dtp_base = alpha_get_dtprel_base (info->link_info);
3076 tp_base = alpha_get_tprel_base (info->link_info);
3077 disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
252b5132 3078
a7519a3c 3079 insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
252b5132 3080
a7519a3c
RH		 3081 switch (r_type)
3082 {
3083 case R_ALPHA_GOTDTPREL:
3084 r_type = R_ALPHA_DTPREL16;
3085 break;
3086 case R_ALPHA_GOTTPREL:
3087 r_type = R_ALPHA_TPREL16;
3088 break;
3089 default:
3090 BFD_ASSERT (0);
3091 return FALSE;
3092 }
3093 }
252b5132 3094
a7519a3c 3095 if (disp < -0x8000 || disp >= 0x8000)
b34976b6 3096 return TRUE;
252b5132 3097
a7519a3c
RH		 3098 bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset);
3099 info->changed_contents = TRUE;
252b5132 3100
a7519a3c
RH		 3101 /* Reduce the use count on this got entry by one, possibly
3102 eliminating it. */
3103 if (--info->gotent->use_count == 0)
252b5132 3104 {
a7519a3c
RH		 3105 int sz = alpha_got_entry_size (r_type);
3106 alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
3107 if (!info->h)
3108 alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
252b5132 3109 }
252b5132 3110
a7519a3c
RH		 3111 /* Smash the existing GOT relocation for its 16-bit immediate pair. */
3112 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type);
3113 info->changed_relocs = TRUE;
3114
3115 /* ??? Search forward through this basic block looking for insns
3116 that use the target register. Stop after an insn modifying the
3117 register is seen, or after a branch or call.
252b5132 3118
a7519a3c
RH		 3119 Any such memory load insn may be substituted by a load directly
3120 off the GP. This allows the memory load insn to be issued before
3121 the calculated GP register would otherwise be ready.
252b5132 3122
a7519a3c
RH		 3123 Any such jsr insn can be replaced by a bsr if it is in range.
3124
3125 This would mean that we'd have to _add_ relocations, the pain of
3126 which gives one pause. */
252b5132 3127
b34976b6 3128 return TRUE;
252b5132
RH		 3129}
3130
a7519a3c
RH		 3131static bfd_vma
3132elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval)
252b5132 3133{
a7519a3c
RH		 3134 /* If the function has the same gp, and we can identify that the
3135 function does not use its function pointer, we can eliminate the
3136 address load. */
252b5132 3137
a7519a3c
RH		 3138 /* If the symbol is marked NOPV, we are being told the function never
3139 needs its procedure value. */
3140 if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV)
3141 return symval;
252b5132 3142
a7519a3c
RH		 3143 /* If the symbol is marked STD_GP, we are being told the function does
3144 a normal ldgp in the first two words. */
3145 else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD)
3146 ;
252b5132 3147
a7519a3c
RH		 3148 /* Otherwise, we may be able to identify a GP load in the first two
3149 words, which we can then skip. */
3150 else
252b5132 3151 {
a7519a3c
RH		 3152 Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp;
3153 bfd_vma ofs;
252b5132 3154
a7519a3c
RH		 3155 /* Load the relocations from the section that the target symbol is in. */
3156 if (info->sec == info->tsec)
252b5132 3157 {
a7519a3c
RH		 3158 tsec_relocs = info->relocs;
3159 tsec_relend = info->relend;
3160 tsec_free = NULL;
3161 }
3162 else
3163 {
3164 tsec_relocs = (_bfd_elf_link_read_relocs
3165 (info->abfd, info->tsec, (PTR) NULL,
3166 (Elf_Internal_Rela *) NULL,
3167 info->link_info->keep_memory));
3168 if (tsec_relocs == NULL)
3169 return 0;
3170 tsec_relend = tsec_relocs + info->tsec->reloc_count;
3171 tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs);
3172 }
252b5132 3173
a7519a3c
RH		 3174 /* Recover the symbol's offset within the section. */
3175 ofs = (symval - info->tsec->output_section->vma
3176 - info->tsec->output_offset);
252b5132 3177
a7519a3c
RH		 3178 /* Look for a GPDISP reloc. */
3179 gpdisp = (elf64_alpha_find_reloc_at_ofs
3180 (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP));
252b5132 3181
a7519a3c
RH		 3182 if (!gpdisp || gpdisp->r_addend != 4)
3183 {
3184 if (tsec_free)
3185 free (tsec_free);
3186 return 0;
252b5132 3187 }
a7519a3c
RH		 3188 if (tsec_free)
3189 free (tsec_free);
252b5132
RH		 3190 }
3191
a7519a3c
RH		 3192 /* We've now determined that we can skip an initial gp load. Verify
3193 that the call and the target use the same gp. */
f13a99db 3194 if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec
a7519a3c
RH		 3195 || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj)
3196 return 0;
252b5132 3197
a7519a3c
RH		 3198 return symval + 8;
3199}
252b5132 3200
a7519a3c
RH		 3201static bfd_boolean
3202elf64_alpha_relax_with_lituse (struct alpha_relax_info *info,
3203 bfd_vma symval, Elf_Internal_Rela *irel)
252b5132 3204{
a7519a3c
RH		 3205 Elf_Internal_Rela *urel, *irelend = info->relend;
3206 int flags, count, i;
3207 bfd_signed_vma disp;
3208 bfd_boolean fits16;
3209 bfd_boolean fits32;
3210 bfd_boolean lit_reused = FALSE;
3211 bfd_boolean all_optimized = TRUE;
3212 unsigned int lit_insn;
252b5132 3213
a7519a3c
RH		 3214 lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
3215 if (lit_insn >> 26 != OP_LDQ)
3216 {
3217 ((*_bfd_error_handler)
3218 ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn",
3219 info->abfd, info->sec,
3220 (unsigned long) irel->r_offset));
3221 return TRUE;
3222 }
252b5132 3223
a7519a3c
RH		 3224 /* Can't relax dynamic symbols. */
3225 if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
3226 return TRUE;
3227
3228 /* Summarize how this particular LITERAL is used. */
3229 for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
252b5132 3230 {
a7519a3c
RH		 3231 if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
3232 break;
8288a39e 3233 if (urel->r_addend <= 6)
a7519a3c
RH		 3234 flags |= 1 << urel->r_addend;
3235 }
252b5132 3236
a7519a3c
RH		 3237 /* A little preparation for the loop... */
3238 disp = symval - info->gp;
252b5132 3239
a7519a3c
RH		 3240 for (urel = irel+1, i = 0; i < count; ++i, ++urel)
3241 {
3242 unsigned int insn;
3243 int insn_disp;
3244 bfd_signed_vma xdisp;
252b5132 3245
a7519a3c 3246 insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
252b5132 3247
a7519a3c
RH		 3248 switch (urel->r_addend)
3249 {
3250 case LITUSE_ALPHA_ADDR:
3251 default:
3252 /* This type is really just a placeholder to note that all
3253 uses cannot be optimized, but to still allow some. */
3254 all_optimized = FALSE;
3255 break;
252b5132 3256
a7519a3c
RH		 3257 case LITUSE_ALPHA_BASE:
3258 /* We can always optimize 16-bit displacements. */
252b5132 3259
a7519a3c
RH		 3260 /* Extract the displacement from the instruction, sign-extending
3261 it if necessary, then test whether it is within 16 or 32 bits
3262 displacement from GP. */
3263 insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000;
3264
3265 xdisp = disp + insn_disp;
3266 fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000);
3267 fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000
3268 && xdisp < 0x7fff8000);
3269
3270 if (fits16)
3271 {
3272 /* Take the op code and dest from this insn, take the base
3273 register from the literal insn. Leave the offset alone. */
3274 insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000);
3275 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
3276 R_ALPHA_GPREL16);
3277 urel->r_addend = irel->r_addend;
3278 info->changed_relocs = TRUE;
252b5132 3279
a7519a3c
RH		 3280 bfd_put_32 (info->abfd, (bfd_vma) insn,
3281 info->contents + urel->r_offset);
3282 info->changed_contents = TRUE;
252b5132 3283 }
252b5132 3284
a7519a3c
RH		 3285 /* If all mem+byte, we can optimize 32-bit mem displacements. */
3286 else if (fits32 && !(flags & ~6))
3287 {
3288 /* FIXME: sanity check that lit insn Ra is mem insn Rb. */
252b5132 3289
a7519a3c
RH		 3290 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
3291 R_ALPHA_GPRELHIGH);
3292 lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
3293 bfd_put_32 (info->abfd, (bfd_vma) lit_insn,
3294 info->contents + irel->r_offset);
3295 lit_reused = TRUE;
3296 info->changed_contents = TRUE;
252b5132 3297
a7519a3c
RH		 3298 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
3299 R_ALPHA_GPRELLOW);
3300 urel->r_addend = irel->r_addend;
3301 info->changed_relocs = TRUE;
3302 }
3303 else
3304 all_optimized = FALSE;
3305 break;
252b5132 3306
a7519a3c
RH		 3307 case LITUSE_ALPHA_BYTOFF:
3308 /* We can always optimize byte instructions. */
252b5132 3309
a7519a3c
RH		 3310 /* FIXME: sanity check the insn for byte op. Check that the
3311 literal dest reg is indeed Rb in the byte insn. */
252b5132 3312
a7519a3c
RH		 3313 insn &= ~ (unsigned) 0x001ff000;
3314 insn |= ((symval & 7) << 13) | 0x1000;
252b5132 3315
a7519a3c
RH		 3316 urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3317 urel->r_addend = 0;
3318 info->changed_relocs = TRUE;
e92d460e 3319
a7519a3c
RH		 3320 bfd_put_32 (info->abfd, (bfd_vma) insn,
3321 info->contents + urel->r_offset);
3322 info->changed_contents = TRUE;
3323 break;
252b5132 3324
a7519a3c
RH		 3325 case LITUSE_ALPHA_JSR:
3326 case LITUSE_ALPHA_TLSGD:
3327 case LITUSE_ALPHA_TLSLDM:
8288a39e 3328 case LITUSE_ALPHA_JSRDIRECT:
0d5f9994 3329 {
a7519a3c
RH		 3330 bfd_vma optdest, org;
3331 bfd_signed_vma odisp;
252b5132 3332
a7519a3c
RH		 3333 /* For undefined weak symbols, we're mostly interested in getting
3334 rid of the got entry whenever possible, so optimize this to a
3335 use of the zero register. */
3336 if (info->h && info->h->root.root.type == bfd_link_hash_undefweak)
3337 {
3338 insn |= 31 << 16;
3339 bfd_put_32 (info->abfd, (bfd_vma) insn,
3340 info->contents + urel->r_offset);
252b5132 3341
a7519a3c
RH		 3342 info->changed_contents = TRUE;
3343 break;
3344 }
252b5132 3345
a7519a3c
RH		 3346 /* If not zero, place to jump without needing pv. */
3347 optdest = elf64_alpha_relax_opt_call (info, symval);
3348 org = (info->sec->output_section->vma
3349 + info->sec->output_offset
3350 + urel->r_offset + 4);
3351 odisp = (optdest ? optdest : symval) - org;
252b5132 3352
a7519a3c
RH		 3353 if (odisp >= -0x400000 && odisp < 0x400000)
3354 {
3355 Elf_Internal_Rela *xrel;
252b5132 3356
a7519a3c
RH		 3357 /* Preserve branch prediction call stack when possible. */
3358 if ((insn & INSN_JSR_MASK) == INSN_JSR)
3359 insn = (OP_BSR << 26) | (insn & 0x03e00000);
3360 else
3361 insn = (OP_BR << 26) | (insn & 0x03e00000);
252b5132 3362
a7519a3c
RH		 3363 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
3364 R_ALPHA_BRADDR);
3365 urel->r_addend = irel->r_addend;
252b5132 3366
a7519a3c
RH		 3367 if (optdest)
3368 urel->r_addend += optdest - symval;
3369 else
3370 all_optimized = FALSE;
252b5132 3371
a7519a3c
RH		 3372 bfd_put_32 (info->abfd, (bfd_vma) insn,
3373 info->contents + urel->r_offset);
252b5132 3374
a7519a3c
RH		 3375 /* Kill any HINT reloc that might exist for this insn. */
3376 xrel = (elf64_alpha_find_reloc_at_ofs
3377 (info->relocs, info->relend, urel->r_offset,
3378 R_ALPHA_HINT));
3379 if (xrel)
3380 xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
252b5132 3381
a7519a3c
RH		 3382 info->changed_contents = TRUE;
3383 info->changed_relocs = TRUE;
3384 }
3385 else
3386 all_optimized = FALSE;
252b5132 3387
a7519a3c
RH		 3388 /* Even if the target is not in range for a direct branch,
3389 if we share a GP, we can eliminate the gp reload. */
3390 if (optdest)
3391 {
3392 Elf_Internal_Rela *gpdisp
3393 = (elf64_alpha_find_reloc_at_ofs
3394 (info->relocs, irelend, urel->r_offset + 4,
3395 R_ALPHA_GPDISP));
3396 if (gpdisp)
3397 {
3398 bfd_byte *p_ldah = info->contents + gpdisp->r_offset;
3399 bfd_byte *p_lda = p_ldah + gpdisp->r_addend;
3400 unsigned int ldah = bfd_get_32 (info->abfd, p_ldah);
3401 unsigned int lda = bfd_get_32 (info->abfd, p_lda);
252b5132 3402
a7519a3c
RH		 3403 /* Verify that the instruction is "ldah $29,0($26)".
3404 Consider a function that ends in a noreturn call,
3405 and that the next function begins with an ldgp,
3406 and that by accident there is no padding between.
3407 In that case the insn would use $27 as the base. */
3408 if (ldah == 0x27ba0000 && lda == 0x23bd0000)
3409 {
3410 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah);
3411 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda);
252b5132 3412
a7519a3c
RH		 3413 gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3414 info->changed_contents = TRUE;
3415 info->changed_relocs = TRUE;
3416 }
3417 }
3418 }
3419 }
3420 break;
252b5132 3421 }
252b5132
RH		 3422 }
3423
a7519a3c
RH		 3424 /* If all cases were optimized, we can reduce the use count on this
3425 got entry by one, possibly eliminating it. */
3426 if (all_optimized)
252b5132 3427 {
a7519a3c 3428 if (--info->gotent->use_count == 0)
252b5132 3429 {
a7519a3c
RH		 3430 int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
3431 alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
3432 if (!info->h)
3433 alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
252b5132 3434 }
a7519a3c
RH		 3435
3436 /* If the literal instruction is no longer needed (it may have been
3437 reused. We can eliminate it. */
3438 /* ??? For now, I don't want to deal with compacting the section,
3439 so just nop it out. */
3440 if (!lit_reused)
252b5132 3441 {
a7519a3c
RH		 3442 irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3443 info->changed_relocs = TRUE;
252b5132 3444
a7519a3c
RH		 3445 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP,
3446 info->contents + irel->r_offset);
3447 info->changed_contents = TRUE;
3448 }
252b5132 3449
a7519a3c
RH		 3450 return TRUE;
3451 }
3452 else
3453 return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL);
252b5132
RH		 3454}
3455
b34976b6 3456static bfd_boolean
a7519a3c
RH		 3457elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval,
3458 Elf_Internal_Rela *irel, bfd_boolean is_gd)
f44f99a5 3459{
a7519a3c 3460 bfd_byte *pos[5];
891caa9b 3461 unsigned int insn, tlsgd_reg;
a7519a3c 3462 Elf_Internal_Rela *gpdisp, *hint;
891caa9b 3463 bfd_boolean dynamic, use_gottprel;
a7519a3c 3464 unsigned long new_symndx;
f44f99a5 3465
a7519a3c 3466 dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info);
f44f99a5 3467
a7519a3c
RH		 3468 /* If a TLS symbol is accessed using IE at least once, there is no point
3469 to use dynamic model for it. */
3470 if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE))
3471 ;
f44f99a5 3472
a7519a3c
RH		 3473 /* If the symbol is local, and we've already committed to DF_STATIC_TLS,
3474 then we might as well relax to IE. */
3475 else if (info->link_info->shared && !dynamic
3476 && (info->link_info->flags & DF_STATIC_TLS))
3477 ;
f44f99a5 3478
a7519a3c
RH		 3479 /* Otherwise we must be building an executable to do anything. */
3480 else if (info->link_info->shared)
3481 return TRUE;
f44f99a5 3482
a7519a3c
RH		 3483 /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and
3484 the matching LITUSE_TLS relocations. */
3485 if (irel + 2 >= info->relend)
3486 return TRUE;
3487 if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL
3488 || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE
3489 || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM))
3490 return TRUE;
f44f99a5 3491
a7519a3c
RH		 3492 /* There must be a GPDISP relocation positioned immediately after the
3493 LITUSE relocation. */
3494 gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
3495 irel[2].r_offset + 4, R_ALPHA_GPDISP);
3496 if (!gpdisp)
b34976b6 3497 return TRUE;
f44f99a5 3498
a7519a3c
RH		 3499 pos[0] = info->contents + irel[0].r_offset;
3500 pos[1] = info->contents + irel[1].r_offset;
3501 pos[2] = info->contents + irel[2].r_offset;
3502 pos[3] = info->contents + gpdisp->r_offset;
3503 pos[4] = pos[3] + gpdisp->r_addend;
f44f99a5 3504
a7519a3c
RH		 3505 /* Generally, the positions are not allowed to be out of order, lest the
3506 modified insn sequence have different register lifetimes. We can make
3507 an exception when pos 1 is adjacent to pos 0. */
3508 if (pos[1] + 4 == pos[0])
f44f99a5 3509 {
a7519a3c
RH		 3510 bfd_byte *tmp = pos[0];
3511 pos[0] = pos[1];
3512 pos[1] = tmp;
f44f99a5 3513 }
a7519a3c
RH		 3514 if (pos[1] >= pos[2] || pos[2] >= pos[3])
3515 return TRUE;
cc03ec80 3516
a7519a3c
RH		 3517 /* Reduce the use count on the LITERAL relocation. Do this before we
3518 smash the symndx when we adjust the relocations below. */
3519 {
3520 struct alpha_elf_got_entry *lit_gotent;
3521 struct alpha_elf_link_hash_entry *lit_h;
3522 unsigned long indx;
f44f99a5 3523
a7519a3c
RH		 3524 BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info);
3525 indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info;
3526 lit_h = alpha_elf_sym_hashes (info->abfd)[indx];
f44f99a5 3527
a7519a3c
RH		 3528 while (lit_h->root.root.type == bfd_link_hash_indirect
3529 || lit_h->root.root.type == bfd_link_hash_warning)
3530 lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link;
252b5132 3531
a7519a3c
RH		 3532 for (lit_gotent = lit_h->got_entries; lit_gotent ;
3533 lit_gotent = lit_gotent->next)
3534 if (lit_gotent->gotobj == info->gotobj
3535 && lit_gotent->reloc_type == R_ALPHA_LITERAL
3536 && lit_gotent->addend == irel[1].r_addend)
3537 break;
3538 BFD_ASSERT (lit_gotent);
252b5132 3539
a7519a3c
RH		 3540 if (--lit_gotent->use_count == 0)
3541 {
3542 int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
3543 alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
3544 }
3545 }
252b5132 3546
a7519a3c 3547 /* Change
252b5132 3548
a7519a3c
RH		 3549 lda $16,x($gp) !tlsgd!1
3550 ldq $27,__tls_get_addr($gp) !literal!1
3551 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3552 ldah $29,0($26) !gpdisp!2
3553 lda $29,0($29) !gpdisp!2
3554 to
3555 ldq $16,x($gp) !gottprel
3556 unop
3557 call_pal rduniq
3558 addq $16,$0,$0
3559 unop
3560 or the first pair to
3561 lda $16,x($gp) !tprel
3562 unop
3563 or
3564 ldah $16,x($gp) !tprelhi
3565 lda $16,x($16) !tprello
3566
3567 as appropriate. */
3568
3569 use_gottprel = FALSE;
cf35638d 3570 new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF;
891caa9b
RH		 3571
3572 /* Beware of the compiler hoisting part of the sequence out a loop
3573 and adjusting the destination register for the TLSGD insn. If this
3574 happens, there will be a move into $16 before the JSR insn, so only
3575 transformations of the first insn pair should use this register. */
3576 tlsgd_reg = bfd_get_32 (info->abfd, pos[0]);
3577 tlsgd_reg = (tlsgd_reg >> 21) & 31;
3578
a7519a3c 3579 switch (!dynamic && !info->link_info->shared)
252b5132 3580 {
a7519a3c
RH		 3581 case 1:
3582 {
3583 bfd_vma tp_base;
3584 bfd_signed_vma disp;
252b5132 3585
a7519a3c
RH		 3586 BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
3587 tp_base = alpha_get_tprel_base (info->link_info);
3588 disp = symval - tp_base;
252b5132 3589
a7519a3c
RH		 3590 if (disp >= -0x8000 && disp < 0x8000)
3591 {
891caa9b 3592 insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (31 << 16);
a7519a3c
RH		 3593 bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
3594 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
3765b1be 3595
a7519a3c
RH		 3596 irel[0].r_offset = pos[0] - info->contents;
3597 irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16);
3598 irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3599 break;
3600 }
3601 else if (disp >= -(bfd_signed_vma) 0x80000000
3602 && disp < (bfd_signed_vma) 0x7fff8000
891caa9b 3603 && pos[0] + 4 == pos[1])
a7519a3c 3604 {
891caa9b 3605 insn = (OP_LDAH << 26) | (tlsgd_reg << 21) | (31 << 16);
a7519a3c 3606 bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
891caa9b 3607 insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (tlsgd_reg << 16);
a7519a3c 3608 bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]);
3765b1be 3609
a7519a3c
RH		 3610 irel[0].r_offset = pos[0] - info->contents;
3611 irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI);
3612 irel[1].r_offset = pos[1] - info->contents;
3613 irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO);
3614 break;
3615 }
3616 }
3617 /* FALLTHRU */
3765b1be 3618
3765b1be 3619 default:
a7519a3c
RH		 3620 use_gottprel = TRUE;
3621
891caa9b 3622 insn = (OP_LDQ << 26) | (tlsgd_reg << 21) | (29 << 16);
a7519a3c
RH		 3623 bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
3624 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
3625
3626 irel[0].r_offset = pos[0] - info->contents;
3627 irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL);
3628 irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3629 break;
3765b1be 3630 }
3765b1be 3631
a7519a3c 3632 bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]);
252b5132 3633
a7519a3c
RH		 3634 insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0);
3635 bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]);
3765b1be 3636
a7519a3c 3637 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]);
e92d460e 3638
a7519a3c
RH		 3639 irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
3640 gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
252b5132 3641
a7519a3c
RH		 3642 hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
3643 irel[2].r_offset, R_ALPHA_HINT);
3644 if (hint)
3645 hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
252b5132 3646
a7519a3c
RH		 3647 info->changed_contents = TRUE;
3648 info->changed_relocs = TRUE;
d6ad34f6 3649
a7519a3c
RH		 3650 /* Reduce the use count on the TLSGD/TLSLDM relocation. */
3651 if (--info->gotent->use_count == 0)
3765b1be 3652 {
a7519a3c
RH		 3653 int sz = alpha_got_entry_size (info->gotent->reloc_type);
3654 alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
3655 if (!info->h)
3656 alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
3765b1be 3657 }
252b5132 3658
a7519a3c
RH		 3659 /* If we've switched to a GOTTPREL relocation, increment the reference
3660 count on that got entry. */
3661 if (use_gottprel)
f44f99a5 3662 {
a7519a3c 3663 struct alpha_elf_got_entry *tprel_gotent;
f44f99a5 3664
a7519a3c
RH		 3665 for (tprel_gotent = *info->first_gotent; tprel_gotent ;
3666 tprel_gotent = tprel_gotent->next)
3667 if (tprel_gotent->gotobj == info->gotobj
3668 && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL
3669 && tprel_gotent->addend == irel->r_addend)
3670 break;
3671 if (tprel_gotent)
3672 tprel_gotent->use_count++;
3673 else
f44f99a5 3674 {
a7519a3c
RH		 3675 if (info->gotent->use_count == 0)
3676 tprel_gotent = info->gotent;
3677 else
3678 {
3679 tprel_gotent = (struct alpha_elf_got_entry *)
3680 bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry));
3681 if (!tprel_gotent)
3682 return FALSE;
f44f99a5 3683
a7519a3c
RH		 3684 tprel_gotent->next = *info->first_gotent;
3685 *info->first_gotent = tprel_gotent;
f44f99a5 3686
a7519a3c
RH		 3687 tprel_gotent->gotobj = info->gotobj;
3688 tprel_gotent->addend = irel->r_addend;
3689 tprel_gotent->got_offset = -1;
3690 tprel_gotent->reloc_done = 0;
3691 tprel_gotent->reloc_xlated = 0;
3692 }
f44f99a5 3693
a7519a3c
RH		 3694 tprel_gotent->use_count = 1;
3695 tprel_gotent->reloc_type = R_ALPHA_GOTTPREL;
3696 }
f44f99a5 3697 }
f44f99a5 3698
b34976b6 3699 return TRUE;
f44f99a5
RH		 3700}
3701
b34976b6 3702static bfd_boolean
a7519a3c
RH		 3703elf64_alpha_relax_section (bfd *abfd, asection *sec,
3704 struct bfd_link_info *link_info, bfd_boolean *again)
f44f99a5 3705{
a7519a3c
RH		 3706 Elf_Internal_Shdr *symtab_hdr;
3707 Elf_Internal_Rela *internal_relocs;
3708 Elf_Internal_Rela *irel, *irelend;
3709 Elf_Internal_Sym *isymbuf = NULL;
3710 struct alpha_elf_got_entry **local_got_entries;
3711 struct alpha_relax_info info;
4dfe6ac6
NC		 3712 struct alpha_elf_link_hash_table * htab;
3713
3714 htab = alpha_elf_hash_table (link_info);
3715 if (htab == NULL)
3716 return FALSE;
f44f99a5 3717
4a828aab 3718 /* There's nothing to change, yet. */
a7519a3c 3719 *again = FALSE;
f44f99a5 3720
a7519a3c
RH		 3721 if (link_info->relocatable
3722 || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC))
3723 != (SEC_CODE | SEC_RELOC | SEC_ALLOC))
3724 || sec->reloc_count == 0)
d6ad34f6
RH		 3725 return TRUE;
3726
0ffa91dd
NC		 3727 BFD_ASSERT (is_alpha_elf (abfd));
3728
4a828aab 3729 /* Make sure our GOT and PLT tables are up-to-date. */
4dfe6ac6 3730 if (htab->relax_trip != link_info->relax_trip)
4a828aab 3731 {
4dfe6ac6 3732 htab->relax_trip = link_info->relax_trip;
4a828aab
RH		 3733
3734 /* This should never fail after the initial round, since the only
3735 error is GOT overflow, and relaxation only shrinks the table. */
3736 if (!elf64_alpha_size_got_sections (link_info))
3737 abort ();
3738 if (elf_hash_table (link_info)->dynamic_sections_created)
3739 {
3740 elf64_alpha_size_plt_section (link_info);
3741 elf64_alpha_size_rela_got_section (link_info);
3742 }
3743 }
3744
0ffa91dd 3745 symtab_hdr = &elf_symtab_hdr (abfd);
a7519a3c 3746 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
252b5132 3747
a7519a3c
RH		 3748 /* Load the relocations for this section. */
3749 internal_relocs = (_bfd_elf_link_read_relocs
3750 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
3751 link_info->keep_memory));
3752 if (internal_relocs == NULL)
3753 return FALSE;
252b5132 3754
a7519a3c
RH		 3755 memset(&info, 0, sizeof (info));
3756 info.abfd = abfd;
3757 info.sec = sec;
3758 info.link_info = link_info;
3759 info.symtab_hdr = symtab_hdr;
3760 info.relocs = internal_relocs;
3761 info.relend = irelend = internal_relocs + sec->reloc_count;
3762
3763 /* Find the GP for this object. Do not store the result back via
3764 _bfd_set_gp_value, since this could change again before final. */
3765 info.gotobj = alpha_elf_tdata (abfd)->gotobj;
3766 if (info.gotobj)
3765b1be 3767 {
a7519a3c
RH		 3768 asection *sgot = alpha_elf_tdata (info.gotobj)->got;
3769 info.gp = (sgot->output_section->vma
3770 + sgot->output_offset
3771 + 0x8000);
252b5132
RH		 3772 }
3773
a7519a3c
RH		 3774 /* Get the section contents. */
3775 if (elf_section_data (sec)->this_hdr.contents != NULL)
3776 info.contents = elf_section_data (sec)->this_hdr.contents;
3777 else
3778 {
3779 if (!bfd_malloc_and_get_section (abfd, sec, &info.contents))
3780 goto error_return;
3781 }
252b5132 3782
a7519a3c
RH		 3783 for (irel = internal_relocs; irel < irelend; irel++)
3784 {
3785 bfd_vma symval;
3786 struct alpha_elf_got_entry *gotent;
3787 unsigned long r_type = ELF64_R_TYPE (irel->r_info);
3788 unsigned long r_symndx = ELF64_R_SYM (irel->r_info);
3789
3790 /* Early exit for unhandled or unrelaxable relocations. */
3791 switch (r_type)
3792 {
3793 case R_ALPHA_LITERAL:
3794 case R_ALPHA_GPRELHIGH:
3795 case R_ALPHA_GPRELLOW:
3796 case R_ALPHA_GOTDTPREL:
3797 case R_ALPHA_GOTTPREL:
3798 case R_ALPHA_TLSGD:
3799 break;
3800
3801 case R_ALPHA_TLSLDM:
3802 /* The symbol for a TLSLDM reloc is ignored. Collapse the
cf35638d
TS		 3803 reloc to the STN_UNDEF (0) symbol so that they all match. */
3804 r_symndx = STN_UNDEF;
a7519a3c
RH		 3805 break;
3806
3807 default:
3808 continue;
3809 }
3810
3811 /* Get the value of the symbol referred to by the reloc. */
3812 if (r_symndx < symtab_hdr->sh_info)
3813 {
3814 /* A local symbol. */
3815 Elf_Internal_Sym *isym;
3816
3817 /* Read this BFD's local symbols. */
3818 if (isymbuf == NULL)
3819 {
3820 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3821 if (isymbuf == NULL)
3822 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
3823 symtab_hdr->sh_info, 0,
3824 NULL, NULL, NULL);
3825 if (isymbuf == NULL)
3826 goto error_return;
3827 }
252b5132 3828
a7519a3c 3829 isym = isymbuf + r_symndx;
252b5132 3830
a7519a3c
RH		 3831 /* Given the symbol for a TLSLDM reloc is ignored, this also
3832 means forcing the symbol value to the tp base. */
3833 if (r_type == R_ALPHA_TLSLDM)
3834 {
3835 info.tsec = bfd_abs_section_ptr;
3836 symval = alpha_get_tprel_base (info.link_info);
3837 }
3838 else
3839 {
3840 symval = isym->st_value;
3841 if (isym->st_shndx == SHN_UNDEF)
3842 continue;
3843 else if (isym->st_shndx == SHN_ABS)
3844 info.tsec = bfd_abs_section_ptr;
3845 else if (isym->st_shndx == SHN_COMMON)
3846 info.tsec = bfd_com_section_ptr;
3847 else
3848 info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3849 }
252b5132 3850
a7519a3c
RH		 3851 info.h = NULL;
3852 info.other = isym->st_other;
3853 if (local_got_entries)
3854 info.first_gotent = &local_got_entries[r_symndx];
3855 else
3856 {
3857 info.first_gotent = &info.gotent;
3858 info.gotent = NULL;
3859 }
252b5132 3860 }
a7519a3c
RH		 3861 else
3862 {
3863 unsigned long indx;
3864 struct alpha_elf_link_hash_entry *h;
252b5132 3865
a7519a3c
RH		 3866 indx = r_symndx - symtab_hdr->sh_info;
3867 h = alpha_elf_sym_hashes (abfd)[indx];
3868 BFD_ASSERT (h != NULL);
252b5132 3869
a7519a3c
RH		 3870 while (h->root.root.type == bfd_link_hash_indirect
3871 || h->root.root.type == bfd_link_hash_warning)
3872 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
252b5132 3873
a7519a3c
RH		 3874 /* If the symbol is undefined, we can't do anything with it. */
3875 if (h->root.root.type == bfd_link_hash_undefined)
3876 continue;
252b5132 3877
a7519a3c
RH		 3878 /* If the symbol isn't defined in the current module,
3879 again we can't do anything. */
3880 if (h->root.root.type == bfd_link_hash_undefweak)
3881 {
3882 info.tsec = bfd_abs_section_ptr;
3883 symval = 0;
3884 }
3885 else if (!h->root.def_regular)
3886 {
3887 /* Except for TLSGD relocs, which can sometimes be
3888 relaxed to GOTTPREL relocs. */
3889 if (r_type != R_ALPHA_TLSGD)
3890 continue;
3891 info.tsec = bfd_abs_section_ptr;
3892 symval = 0;
3893 }
3894 else
3895 {
3896 info.tsec = h->root.root.u.def.section;
3897 symval = h->root.root.u.def.value;
3898 }
252b5132 3899
a7519a3c
RH		 3900 info.h = h;
3901 info.other = h->root.other;
3902 info.first_gotent = &h->got_entries;
3903 }
252b5132 3904
a7519a3c
RH		 3905 /* Search for the got entry to be used by this relocation. */
3906 for (gotent = *info.first_gotent; gotent ; gotent = gotent->next)
3907 if (gotent->gotobj == info.gotobj
3908 && gotent->reloc_type == r_type
3909 && gotent->addend == irel->r_addend)
3910 break;
3911 info.gotent = gotent;
252b5132 3912
a7519a3c
RH		 3913 symval += info.tsec->output_section->vma + info.tsec->output_offset;
3914 symval += irel->r_addend;
252b5132 3915
a7519a3c 3916 switch (r_type)
252b5132 3917 {
a7519a3c
RH		 3918 case R_ALPHA_LITERAL:
3919 BFD_ASSERT(info.gotent != NULL);
252b5132 3920
a7519a3c
RH		 3921 /* If there exist LITUSE relocations immediately following, this
3922 opens up all sorts of interesting optimizations, because we
3923 now know every location that this address load is used. */
3924 if (irel+1 < irelend
3925 && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
252b5132 3926 {
a7519a3c
RH		 3927 if (!elf64_alpha_relax_with_lituse (&info, symval, irel))
3928 goto error_return;
252b5132 3929 }
a7519a3c
RH		 3930 else
3931 {
3932 if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
3933 goto error_return;
3934 }
3935 break;
252b5132 3936
a7519a3c
RH		 3937 case R_ALPHA_GOTDTPREL:
3938 case R_ALPHA_GOTTPREL:
3939 BFD_ASSERT(info.gotent != NULL);
3940 if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
3941 goto error_return;
3942 break;
3943
3944 case R_ALPHA_TLSGD:
3945 case R_ALPHA_TLSLDM:
3946 BFD_ASSERT(info.gotent != NULL);
3947 if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel,
3948 r_type == R_ALPHA_TLSGD))
3949 goto error_return;
3950 break;
252b5132
RH		 3951 }
3952 }
3953
a7519a3c
RH		 3954 if (isymbuf != NULL
3955 && symtab_hdr->contents != (unsigned char *) isymbuf)
3956 {
3957 if (!link_info->keep_memory)
3958 free (isymbuf);
3959 else
252b5132 3960 {
a7519a3c
RH		 3961 /* Cache the symbols for elf_link_input_bfd. */
3962 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 3963 }
a7519a3c 3964 }
252b5132 3965
a7519a3c
RH		 3966 if (info.contents != NULL
3967 && elf_section_data (sec)->this_hdr.contents != info.contents)
3968 {
3969 if (!info.changed_contents && !link_info->keep_memory)
3970 free (info.contents);
3971 else
252b5132 3972 {
a7519a3c
RH		 3973 /* Cache the section contents for elf_link_input_bfd. */
3974 elf_section_data (sec)->this_hdr.contents = info.contents;
252b5132 3975 }
a7519a3c 3976 }
252b5132 3977
a7519a3c
RH		 3978 if (elf_section_data (sec)->relocs != internal_relocs)
3979 {
3980 if (!info.changed_relocs)
3981 free (internal_relocs);
3982 else
3983 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3984 }
a7519a3c
RH		 3985
3986 *again = info.changed_contents || info.changed_relocs;
252b5132 3987
b34976b6 3988 return TRUE;
252b5132 3989
a7519a3c
RH		 3990 error_return:
3991 if (isymbuf != NULL
3992 && symtab_hdr->contents != (unsigned char *) isymbuf)
3993 free (isymbuf);
3994 if (info.contents != NULL
3995 && elf_section_data (sec)->this_hdr.contents != info.contents)
3996 free (info.contents);
3997 if (internal_relocs != NULL
3998 && elf_section_data (sec)->relocs != internal_relocs)
3999 free (internal_relocs);
4000 return FALSE;
4001}
4002\f
1bbc9cec
RH		 4003/* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET)
4004 into the next available slot in SREL. */
4005
4006static void
a7519a3c
RH		 4007elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info,
4008 asection *sec, asection *srel, bfd_vma offset,
4009 long dynindx, long rtype, bfd_vma addend)
1bbc9cec
RH		 4010{
4011 Elf_Internal_Rela outrel;
4012 bfd_byte *loc;
4013
4014 BFD_ASSERT (srel != NULL);
4015
4016 outrel.r_info = ELF64_R_INFO (dynindx, rtype);
4017 outrel.r_addend = addend;
4018
4019 offset = _bfd_elf_section_offset (abfd, info, sec, offset);
4020 if ((offset | 1) != (bfd_vma) -1)
4021 outrel.r_offset = sec->output_section->vma + sec->output_offset + offset;
4022 else
4023 memset (&outrel, 0, sizeof (outrel));
4024
4025 loc = srel->contents;
4026 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
4027 bfd_elf64_swap_reloca_out (abfd, &outrel, loc);
eea6121a 4028 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size);
1bbc9cec
RH		 4029}
4030
4a67a098
RH		 4031/* Relocate an Alpha ELF section for a relocatable link.
4032
4033 We don't have to change anything unless the reloc is against a section
4034 symbol, in which case we have to adjust according to where the section
4035 symbol winds up in the output section. */
4036
b34976b6 4037static bfd_boolean
a7519a3c
RH		 4038elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED,
4039 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4040 bfd *input_bfd, asection *input_section,
4041 bfd_byte *contents ATTRIBUTE_UNUSED,
4042 Elf_Internal_Rela *relocs,
4043 Elf_Internal_Sym *local_syms,
4044 asection **local_sections)
4a67a098
RH		 4045{
4046 unsigned long symtab_hdr_sh_info;
4047 Elf_Internal_Rela *rel;
4048 Elf_Internal_Rela *relend;
ab96bf03 4049 struct elf_link_hash_entry **sym_hashes;
b34976b6 4050 bfd_boolean ret_val = TRUE;
4a67a098 4051
0ffa91dd 4052 symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info;
ab96bf03 4053 sym_hashes = elf_sym_hashes (input_bfd);
4a67a098
RH		 4054
4055 relend = relocs + input_section->reloc_count;
4056 for (rel = relocs; rel < relend; rel++)
4057 {
4058 unsigned long r_symndx;
4059 Elf_Internal_Sym *sym;
4060 asection *sec;
4061 unsigned long r_type;
4062
ab96bf03 4063 r_type = ELF64_R_TYPE (rel->r_info);
4a67a098
RH		 4064 if (r_type >= R_ALPHA_max)
4065 {
4066 (*_bfd_error_handler)
d003868e
AM		 4067 (_("%B: unknown relocation type %d"),
4068 input_bfd, (int) r_type);
4a67a098 4069 bfd_set_error (bfd_error_bad_value);
b34976b6 4070 ret_val = FALSE;
4a67a098
RH		 4071 continue;
4072 }
4073
4a67a098
RH		 4074 /* The symbol associated with GPDISP and LITUSE is
4075 immaterial. Only the addend is significant. */
4076 if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE)
4077 continue;
4078
ab96bf03 4079 r_symndx = ELF64_R_SYM (rel->r_info);
4a67a098
RH		 4080 if (r_symndx < symtab_hdr_sh_info)
4081 {
4082 sym = local_syms + r_symndx;
ab96bf03 4083 sec = local_sections[r_symndx];
4a67a098 4084 }
ab96bf03
AM		 4085 else
4086 {
4087 struct elf_link_hash_entry *h;
4088
4089 h = sym_hashes[r_symndx - symtab_hdr_sh_info];
4090
4091 while (h->root.type == bfd_link_hash_indirect
4092 || h->root.type == bfd_link_hash_warning)
4093 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4094
4095 if (h->root.type != bfd_link_hash_defined
4096 && h->root.type != bfd_link_hash_defweak)
4097 continue;
4098
4099 sym = NULL;
4100 sec = h->root.u.def.section;
4101 }
4102
4103 if (sec != NULL && elf_discarded_section (sec))
e4067dbb
DJ		 4104 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
4105 rel, relend,
4106 elf64_alpha_howto_table + r_type,
4107 contents);
ab96bf03
AM		 4108
4109 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
4110 rel->r_addend += sec->output_offset;
4a67a098
RH		 4111 }
4112
4113 return ret_val;
4114}
4115
252b5132
RH		 4116/* Relocate an Alpha ELF section. */
4117
b34976b6 4118static bfd_boolean
a7519a3c
RH		 4119elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
4120 bfd *input_bfd, asection *input_section,
4121 bfd_byte *contents, Elf_Internal_Rela *relocs,
4122 Elf_Internal_Sym *local_syms,
4123 asection **local_sections)
252b5132 4124{
4a67a098 4125 Elf_Internal_Shdr *symtab_hdr;
252b5132
RH		 4126 Elf_Internal_Rela *rel;
4127 Elf_Internal_Rela *relend;
4a67a098
RH		 4128 asection *sgot, *srel, *srelgot;
4129 bfd *dynobj, *gotobj;
4130 bfd_vma gp, tp_base, dtp_base;
4131 struct alpha_elf_got_entry **local_got_entries;
b34976b6 4132 bfd_boolean ret_val;
252b5132 4133
0ffa91dd
NC		 4134 BFD_ASSERT (is_alpha_elf (input_bfd));
4135
4a67a098 4136 /* Handle relocatable links with a smaller loop. */
1049f94e 4137 if (info->relocatable)
4a67a098
RH		 4138 return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd,
4139 input_section, contents, relocs,
4140 local_syms, local_sections);
4141
4142 /* This is a final link. */
4143
b34976b6 4144 ret_val = TRUE;
252b5132 4145
0ffa91dd 4146 symtab_hdr = &elf_symtab_hdr (input_bfd);
3765b1be 4147
4a67a098
RH		 4148 dynobj = elf_hash_table (info)->dynobj;
4149 if (dynobj)
4150 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4151 else
4152 srelgot = NULL;
4153
3241278a
RH		 4154 if (input_section->flags & SEC_ALLOC)
4155 {
4156 const char *section_name;
4157 section_name = (bfd_elf_string_from_elf_section
4158 (input_bfd, elf_elfheader(input_bfd)->e_shstrndx,
d4730f92 4159 _bfd_elf_single_rel_hdr (input_section)->sh_name));
3241278a
RH		 4160 BFD_ASSERT(section_name != NULL);
4161 srel = bfd_get_section_by_name (dynobj, section_name);
4162 }
4163 else
4164 srel = NULL;
3765b1be 4165
4a67a098
RH		 4166 /* Find the gp value for this input bfd. */
4167 gotobj = alpha_elf_tdata (input_bfd)->gotobj;
4168 if (gotobj)
4169 {
4170 sgot = alpha_elf_tdata (gotobj)->got;
4171 gp = _bfd_get_gp_value (gotobj);
4172 if (gp == 0)
252b5132 4173 {
4a67a098
RH		 4174 gp = (sgot->output_section->vma
4175 + sgot->output_offset
4176 + 0x8000);
4177 _bfd_set_gp_value (gotobj, gp);
4178 }
4179 }
4180 else
4181 {
4182 sgot = NULL;
4183 gp = 0;
4184 }
3765b1be 4185
4a67a098
RH		 4186 local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries;
4187
e1918d23 4188 if (elf_hash_table (info)->tls_sec != NULL)
4a67a098 4189 {
e1918d23
AM		 4190 dtp_base = alpha_get_dtprel_base (info);
4191 tp_base = alpha_get_tprel_base (info);
252b5132 4192 }
4a67a098
RH		 4193 else
4194 dtp_base = tp_base = 0;
252b5132 4195
252b5132 4196 relend = relocs + input_section->reloc_count;
4a67a098 4197 for (rel = relocs; rel < relend; rel++)
252b5132 4198 {
4a67a098 4199 struct alpha_elf_link_hash_entry *h = NULL;
3765b1be
RH		 4200 struct alpha_elf_got_entry *gotent;
4201 bfd_reloc_status_type r;
252b5132
RH		 4202 reloc_howto_type *howto;
4203 unsigned long r_symndx;
4a67a098
RH		 4204 Elf_Internal_Sym *sym = NULL;
4205 asection *sec = NULL;
3765b1be 4206 bfd_vma value;
dc810e39 4207 bfd_vma addend;
b34976b6
AM		 4208 bfd_boolean dynamic_symbol_p;
4209 bfd_boolean undef_weak_ref = FALSE;
3765b1be 4210 unsigned long r_type;
252b5132
RH		 4211
4212 r_type = ELF64_R_TYPE(rel->r_info);
3765b1be 4213 if (r_type >= R_ALPHA_max)
252b5132 4214 {
3765b1be 4215 (*_bfd_error_handler)
d003868e
AM		 4216 (_("%B: unknown relocation type %d"),
4217 input_bfd, (int) r_type);
252b5132 4218 bfd_set_error (bfd_error_bad_value);
b34976b6 4219 ret_val = FALSE;
3765b1be 4220 continue;
252b5132 4221 }
252b5132 4222
3765b1be 4223 howto = elf64_alpha_howto_table + r_type;
252b5132
RH		 4224 r_symndx = ELF64_R_SYM(rel->r_info);
4225
cc03ec80 4226 /* The symbol for a TLSLDM reloc is ignored. Collapse the
cf35638d 4227 reloc to the STN_UNDEF (0) symbol so that they all match. */
cc03ec80 4228 if (r_type == R_ALPHA_TLSLDM)
cf35638d 4229 r_symndx = STN_UNDEF;
cc03ec80 4230
252b5132
RH		 4231 if (r_symndx < symtab_hdr->sh_info)
4232 {
8517fae7 4233 asection *msec;
252b5132
RH		 4234 sym = local_syms + r_symndx;
4235 sec = local_sections[r_symndx];
8517fae7
AM		 4236 msec = sec;
4237 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3765b1be 4238
cf35638d 4239 /* If this is a tp-relative relocation against sym STN_UNDEF (0),
cc03ec80 4240 this is hackery from relax_section. Force the value to
f915360b 4241 be the tls module base. */
cf35638d 4242 if (r_symndx == STN_UNDEF
cc03ec80
RH		 4243 && (r_type == R_ALPHA_TLSLDM
4244 || r_type == R_ALPHA_GOTTPREL
4245 || r_type == R_ALPHA_TPREL64
4246 || r_type == R_ALPHA_TPRELHI
4247 || r_type == R_ALPHA_TPRELLO
4248 || r_type == R_ALPHA_TPREL16))
f915360b 4249 value = dtp_base;
cc03ec80 4250
4a67a098
RH		 4251 if (local_got_entries)
4252 gotent = local_got_entries[r_symndx];
4253 else
4254 gotent = NULL;
3765b1be
RH		 4255
4256 /* Need to adjust local GOT entries' addends for SEC_MERGE
4257 unless it has been done already. */
4258 if ((sec->flags & SEC_MERGE)
048d873d 4259 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
68bfbfcc 4260 && sec->sec_info_type == ELF_INFO_TYPE_MERGE
048d873d
RH		 4261 && gotent
4262 && !gotent->reloc_xlated)
3765b1be
RH		 4263 {
4264 struct alpha_elf_got_entry *ent;
3765b1be
RH		 4265
4266 for (ent = gotent; ent; ent = ent->next)
4267 {
4268 ent->reloc_xlated = 1;
4269 if (ent->use_count == 0)
4270 continue;
4271 msec = sec;
4272 ent->addend =
4273 _bfd_merged_section_offset (output_bfd, &msec,
4274 elf_section_data (sec)->
4275 sec_info,
753731ee 4276 sym->st_value + ent->addend);
3765b1be
RH		 4277 ent->addend -= sym->st_value;
4278 ent->addend += msec->output_section->vma
4279 + msec->output_offset
4280 - sec->output_section->vma
4281 - sec->output_offset;
4282 }
4283 }
4284
b34976b6 4285 dynamic_symbol_p = FALSE;
252b5132
RH		 4286 }
4287 else
4288 {
560e09e9
NC		 4289 bfd_boolean warned;
4290 bfd_boolean unresolved_reloc;
4291 struct elf_link_hash_entry *hh;
b2a8e766
AM		 4292 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
4293
4294 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4295 r_symndx, symtab_hdr, sym_hashes,
4296 hh, sec, value,
4297 unresolved_reloc, warned);
560e09e9
NC		 4298
4299 if (warned)
4300 continue;
252b5132 4301
560e09e9
NC		 4302 if (value == 0
4303 && ! unresolved_reloc
4304 && hh->root.type == bfd_link_hash_undefweak)
b34976b6 4305 undef_weak_ref = TRUE;
3765b1be 4306
560e09e9 4307 h = (struct alpha_elf_link_hash_entry *) hh;
3765b1be
RH		 4308 dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info);
4309 gotent = h->got_entries;
252b5132 4310 }
3765b1be 4311
ab96bf03 4312 if (sec != NULL && elf_discarded_section (sec))
e4067dbb
DJ		 4313 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
4314 rel, relend, howto, contents);
ab96bf03 4315
252b5132 4316 addend = rel->r_addend;
3765b1be
RH		 4317 value += addend;
4318
4319 /* Search for the proper got entry. */
4320 for (; gotent ; gotent = gotent->next)
4321 if (gotent->gotobj == gotobj
4322 && gotent->reloc_type == r_type
4323 && gotent->addend == addend)
4324 break;
252b5132
RH		 4325
4326 switch (r_type)
4327 {
4328 case R_ALPHA_GPDISP:
4329 {
4330 bfd_byte *p_ldah, *p_lda;
4331
4332 BFD_ASSERT(gp != 0);
4333
3765b1be
RH		 4334 value = (input_section->output_section->vma
4335 + input_section->output_offset
4336 + rel->r_offset);
252b5132 4337
3765b1be 4338 p_ldah = contents + rel->r_offset;
252b5132
RH		 4339 p_lda = p_ldah + rel->r_addend;
4340
3765b1be 4341 r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value,
252b5132
RH		 4342 p_ldah, p_lda);
4343 }
4344 break;
4345
252b5132 4346 case R_ALPHA_LITERAL:
3765b1be
RH		 4347 BFD_ASSERT(sgot != NULL);
4348 BFD_ASSERT(gp != 0);
4349 BFD_ASSERT(gotent != NULL);
4350 BFD_ASSERT(gotent->use_count >= 1);
f7460f5f 4351
3765b1be
RH		 4352 if (!gotent->reloc_done)
4353 {
4354 gotent->reloc_done = 1;
252b5132 4355
3765b1be
RH		 4356 bfd_put_64 (output_bfd, value,
4357 sgot->contents + gotent->got_offset);
252b5132 4358
3765b1be
RH		 4359 /* If the symbol has been forced local, output a
4360 RELATIVE reloc, otherwise it will be handled in
4361 finish_dynamic_symbol. */
d6ad34f6 4362 if (info->shared && !dynamic_symbol_p && !undef_weak_ref)
1bbc9cec
RH		 4363 elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
4364 gotent->got_offset, 0,
4365 R_ALPHA_RELATIVE, value);
3765b1be 4366 }
252b5132 4367
3765b1be
RH		 4368 value = (sgot->output_section->vma
4369 + sgot->output_offset
4370 + gotent->got_offset);
4371 value -= gp;
252b5132
RH		 4372 goto default_reloc;
4373
4374 case R_ALPHA_GPREL32:
ec1659c8 4375 case R_ALPHA_GPREL16:
252b5132 4376 case R_ALPHA_GPRELLOW:
3765b1be 4377 if (dynamic_symbol_p)
f16fbd61
RH		 4378 {
4379 (*_bfd_error_handler)
d003868e
AM		 4380 (_("%B: gp-relative relocation against dynamic symbol %s"),
4381 input_bfd, h->root.root.root.string);
b34976b6 4382 ret_val = FALSE;
f16fbd61 4383 }
252b5132 4384 BFD_ASSERT(gp != 0);
3765b1be 4385 value -= gp;
252b5132
RH		 4386 goto default_reloc;
4387
4388 case R_ALPHA_GPRELHIGH:
3765b1be 4389 if (dynamic_symbol_p)
f16fbd61
RH		 4390 {
4391 (*_bfd_error_handler)
d003868e
AM		 4392 (_("%B: gp-relative relocation against dynamic symbol %s"),
4393 input_bfd, h->root.root.root.string);
b34976b6 4394 ret_val = FALSE;
f16fbd61 4395 }
252b5132 4396 BFD_ASSERT(gp != 0);
3765b1be
RH		 4397 value -= gp;
4398 value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1);
252b5132
RH		 4399 goto default_reloc;
4400
252b5132 4401 case R_ALPHA_HINT:
f94952df
RH		 4402 /* A call to a dynamic symbol is definitely out of range of
4403 the 16-bit displacement. Don't bother writing anything. */
3765b1be 4404 if (dynamic_symbol_p)
f94952df
RH		 4405 {
4406 r = bfd_reloc_ok;
4407 break;
4408 }
3765b1be
RH		 4409 /* The regular PC-relative stuff measures from the start of
4410 the instruction rather than the end. */
4411 value -= 4;
4412 goto default_reloc;
f94952df
RH		 4413
4414 case R_ALPHA_BRADDR:
3765b1be
RH		 4415 if (dynamic_symbol_p)
4416 {
4417 (*_bfd_error_handler)
d003868e
AM		 4418 (_("%B: pc-relative relocation against dynamic symbol %s"),
4419 input_bfd, h->root.root.root.string);
b34976b6 4420 ret_val = FALSE;
3765b1be 4421 }
252b5132
RH		 4422 /* The regular PC-relative stuff measures from the start of
4423 the instruction rather than the end. */
3765b1be 4424 value -= 4;
252b5132
RH		 4425 goto default_reloc;
4426
7793f4d0
RH		 4427 case R_ALPHA_BRSGP:
4428 {
4429 int other;
4430 const char *name;
4431
4432 /* The regular PC-relative stuff measures from the start of
4433 the instruction rather than the end. */
3765b1be 4434 value -= 4;
7793f4d0 4435
ccf00ab6
RH		 4436 /* The source and destination gp must be the same. Note that
4437 the source will always have an assigned gp, since we forced
4438 one in check_relocs, but that the destination may not, as
cedb70c5 4439 it might not have had any relocations at all. Also take
ccf00ab6
RH		 4440 care not to crash if H is an undefined symbol. */
4441 if (h != NULL && sec != NULL
4442 && alpha_elf_tdata (sec->owner)->gotobj
7793f4d0
RH		 4443 && gotobj != alpha_elf_tdata (sec->owner)->gotobj)
4444 {
7793f4d0 4445 (*_bfd_error_handler)
d003868e
AM		 4446 (_("%B: change in gp: BRSGP %s"),
4447 input_bfd, h->root.root.root.string);
b34976b6 4448 ret_val = FALSE;
7793f4d0
RH		 4449 }
4450
4451 /* The symbol should be marked either NOPV or STD_GPLOAD. */
4452 if (h != NULL)
4453 other = h->root.other;
4454 else
4455 other = sym->st_other;
4456 switch (other & STO_ALPHA_STD_GPLOAD)
4457 {
4458 case STO_ALPHA_NOPV:
4459 break;
4460 case STO_ALPHA_STD_GPLOAD:
64e04ecd 4461 value += 8;
7793f4d0
RH		 4462 break;
4463 default:
4464 if (h != NULL)
4465 name = h->root.root.root.string;
4466 else
4467 {
4468 name = (bfd_elf_string_from_elf_section
4469 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4470 if (name == NULL)
4471 name = _("<unknown>");
4472 else if (name[0] == 0)
4473 name = bfd_section_name (input_bfd, sec);
4474 }
4475 (*_bfd_error_handler)
d003868e
AM		 4476 (_("%B: !samegp reloc against symbol without .prologue: %s"),
4477 input_bfd, name);
b34976b6 4478 ret_val = FALSE;
7793f4d0
RH		 4479 break;
4480 }
4481
4482 goto default_reloc;
4483 }
4484
252b5132
RH		 4485 case R_ALPHA_REFLONG:
4486 case R_ALPHA_REFQUAD:
3765b1be
RH		 4487 case R_ALPHA_DTPREL64:
4488 case R_ALPHA_TPREL64:
252b5132 4489 {
1bbc9cec
RH		 4490 long dynindx, dyntype = r_type;
4491 bfd_vma dynaddend;
252b5132
RH		 4492
4493 /* Careful here to remember RELATIVE relocations for global
4494 variables for symbolic shared objects. */
4495
3765b1be 4496 if (dynamic_symbol_p)
252b5132
RH		 4497 {
4498 BFD_ASSERT(h->root.dynindx != -1);
1bbc9cec
RH		 4499 dynindx = h->root.dynindx;
4500 dynaddend = addend;
3765b1be
RH		 4501 addend = 0, value = 0;
4502 }
4503 else if (r_type == R_ALPHA_DTPREL64)
4504 {
e1918d23 4505 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3765b1be
RH		 4506 value -= dtp_base;
4507 goto default_reloc;
4508 }
4509 else if (r_type == R_ALPHA_TPREL64)
4510 {
e1918d23 4511 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
1bbc9cec
RH		 4512 if (!info->shared)
4513 {
4514 value -= tp_base;
4515 goto default_reloc;
4516 }
4517 dynindx = 0;
4518 dynaddend = value - dtp_base;
252b5132 4519 }
ec338859 4520 else if (info->shared
cf35638d 4521 && r_symndx != STN_UNDEF
d6ad34f6
RH		 4522 && (input_section->flags & SEC_ALLOC)
4523 && !undef_weak_ref)
252b5132 4524 {
3765b1be
RH		 4525 if (r_type == R_ALPHA_REFLONG)
4526 {
4527 (*_bfd_error_handler)
d003868e
AM		 4528 (_("%B: unhandled dynamic relocation against %s"),
4529 input_bfd,
3765b1be 4530 h->root.root.root.string);
b34976b6 4531 ret_val = FALSE;
3765b1be 4532 }
1bbc9cec
RH		 4533 dynindx = 0;
4534 dyntype = R_ALPHA_RELATIVE;
4535 dynaddend = value;
252b5132
RH		 4536 }
4537 else
4538 goto default_reloc;
4539
3241278a
RH		 4540 if (input_section->flags & SEC_ALLOC)
4541 elf64_alpha_emit_dynrel (output_bfd, info, input_section,
4542 srel, rel->r_offset, dynindx,
4543 dyntype, dynaddend);
252b5132
RH		 4544 }
4545 goto default_reloc;
4546
3765b1be 4547 case R_ALPHA_SREL16:
84de6048
RH		 4548 case R_ALPHA_SREL32:
4549 case R_ALPHA_SREL64:
3765b1be
RH		 4550 if (dynamic_symbol_p)
4551 {
4552 (*_bfd_error_handler)
d003868e
AM		 4553 (_("%B: pc-relative relocation against dynamic symbol %s"),
4554 input_bfd, h->root.root.root.string);
b34976b6 4555 ret_val = FALSE;
3765b1be 4556 }
d6ad34f6
RH		 4557 else if ((info->shared || info->pie) && undef_weak_ref)
4558 {
4559 (*_bfd_error_handler)
4560 (_("%B: pc-relative relocation against undefined weak symbol %s"),
4561 input_bfd, h->root.root.root.string);
4562 ret_val = FALSE;
4563 }
4564
3765b1be 4565
84de6048
RH		 4566 /* ??? .eh_frame references to discarded sections will be smashed
4567 to relocations against SHN_UNDEF. The .eh_frame format allows
4568 NULL to be encoded as 0 in any format, so this works here. */
cf35638d 4569 if (r_symndx == STN_UNDEF)
84de6048
RH		 4570 howto = (elf64_alpha_howto_table
4571 + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG));
4572 goto default_reloc;
4573
3765b1be
RH		 4574 case R_ALPHA_TLSLDM:
4575 /* Ignore the symbol for the relocation. The result is always
4576 the current module. */
4577 dynamic_symbol_p = 0;
4578 /* FALLTHRU */
4579
4580 case R_ALPHA_TLSGD:
4581 if (!gotent->reloc_done)
4582 {
4583 gotent->reloc_done = 1;
4584
4585 /* Note that the module index for the main program is 1. */
4586 bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p,
4587 sgot->contents + gotent->got_offset);
4588
4589 /* If the symbol has been forced local, output a
4590 DTPMOD64 reloc, otherwise it will be handled in
4591 finish_dynamic_symbol. */
4592 if (info->shared && !dynamic_symbol_p)
1bbc9cec
RH		 4593 elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
4594 gotent->got_offset, 0,
4595 R_ALPHA_DTPMOD64, 0);
3765b1be
RH		 4596
4597 if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM)
4598 value = 0;
4599 else
4600 {
e1918d23 4601 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3765b1be
RH		 4602 value -= dtp_base;
4603 }
4604 bfd_put_64 (output_bfd, value,
4605 sgot->contents + gotent->got_offset + 8);
4606 }
4607
4608 value = (sgot->output_section->vma
4609 + sgot->output_offset
4610 + gotent->got_offset);
4611 value -= gp;
4612 goto default_reloc;
4613
4614 case R_ALPHA_DTPRELHI:
4615 case R_ALPHA_DTPRELLO:
4616 case R_ALPHA_DTPREL16:
4617 if (dynamic_symbol_p)
4618 {
4619 (*_bfd_error_handler)
d003868e
AM		 4620 (_("%B: dtp-relative relocation against dynamic symbol %s"),
4621 input_bfd, h->root.root.root.string);
b34976b6 4622 ret_val = FALSE;
3765b1be 4623 }
e1918d23 4624 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3765b1be 4625 value -= dtp_base;
9e756d64
RH		 4626 if (r_type == R_ALPHA_DTPRELHI)
4627 value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1);
3765b1be
RH		 4628 goto default_reloc;
4629
4630 case R_ALPHA_TPRELHI:
4631 case R_ALPHA_TPRELLO:
4632 case R_ALPHA_TPREL16:
9e756d64
RH		 4633 if (info->shared)
4634 {
4635 (*_bfd_error_handler)
d003868e
AM		 4636 (_("%B: TLS local exec code cannot be linked into shared objects"),
4637 input_bfd);
b34976b6 4638 ret_val = FALSE;
9e756d64
RH		 4639 }
4640 else if (dynamic_symbol_p)
3765b1be
RH		 4641 {
4642 (*_bfd_error_handler)
d003868e
AM		 4643 (_("%B: tp-relative relocation against dynamic symbol %s"),
4644 input_bfd, h->root.root.root.string);
b34976b6 4645 ret_val = FALSE;
3765b1be 4646 }
e1918d23 4647 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3765b1be 4648 value -= tp_base;
9e756d64
RH		 4649 if (r_type == R_ALPHA_TPRELHI)
4650 value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1);
3765b1be
RH		 4651 goto default_reloc;
4652
4653 case R_ALPHA_GOTDTPREL:
4654 case R_ALPHA_GOTTPREL:
4655 BFD_ASSERT(sgot != NULL);
4656 BFD_ASSERT(gp != 0);
4657 BFD_ASSERT(gotent != NULL);
4658 BFD_ASSERT(gotent->use_count >= 1);
4659
4660 if (!gotent->reloc_done)
4661 {
4662 gotent->reloc_done = 1;
4663
4664 if (dynamic_symbol_p)
4665 value = 0;
4666 else
4667 {
e1918d23 4668 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
1bbc9cec
RH		 4669 if (r_type == R_ALPHA_GOTDTPREL)
4670 value -= dtp_base;
4671 else if (!info->shared)
4672 value -= tp_base;
4673 else
4674 {
4675 elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot,
4676 gotent->got_offset, 0,
4677 R_ALPHA_TPREL64,
4678 value - dtp_base);
4679 value = 0;
4680 }
3765b1be
RH		 4681 }
4682 bfd_put_64 (output_bfd, value,
4683 sgot->contents + gotent->got_offset);
4684 }
4685
4686 value = (sgot->output_section->vma
4687 + sgot->output_offset
4688 + gotent->got_offset);
4689 value -= gp;
4690 goto default_reloc;
4691
252b5132
RH		 4692 default:
4693 default_reloc:
4694 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3765b1be 4695 contents, rel->r_offset, value, 0);
252b5132
RH		 4696 break;
4697 }
4698
4699 switch (r)
4700 {
4701 case bfd_reloc_ok:
4702 break;
4703
4704 case bfd_reloc_overflow:
4705 {
4706 const char *name;
4707
ed4de5e2
JJ		 4708 /* Don't warn if the overflow is due to pc relative reloc
4709 against discarded section. Section optimization code should
4710 handle it. */
4711
4712 if (r_symndx < symtab_hdr->sh_info
4713 && sec != NULL && howto->pc_relative
4714 && elf_discarded_section (sec))
4715 break;
4716
252b5132 4717 if (h != NULL)
dfeffb9f 4718 name = NULL;
252b5132
RH		 4719 else
4720 {
4721 name = (bfd_elf_string_from_elf_section
4722 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4723 if (name == NULL)
b34976b6 4724 return FALSE;
252b5132
RH		 4725 if (*name == '\0')
4726 name = bfd_section_name (input_bfd, sec);
4727 }
4728 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4729 (info, (h ? &h->root.root : NULL), name, howto->name,
4730 (bfd_vma) 0, input_bfd, input_section,
4731 rel->r_offset)))
b34976b6 4732 ret_val = FALSE;
252b5132
RH		 4733 }
4734 break;
4735
4736 default:
4737 case bfd_reloc_outofrange:
4738 abort ();
4739 }
4740 }
4741
f16fbd61 4742 return ret_val;
252b5132
RH		 4743}
4744
4745/* Finish up dynamic symbol handling. We set the contents of various
4746 dynamic sections here. */
4747
b34976b6 4748static bfd_boolean
a7519a3c
RH		 4749elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
4750 struct elf_link_hash_entry *h,
4751 Elf_Internal_Sym *sym)
252b5132 4752{
6ec7057a 4753 struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h;
252b5132
RH		 4754 bfd *dynobj = elf_hash_table(info)->dynobj;
4755
6ec7057a 4756 if (h->needs_plt)
252b5132
RH		 4757 {
4758 /* Fill in the .plt entry for this symbol. */
4759 asection *splt, *sgot, *srel;
4760 Elf_Internal_Rela outrel;
947216bf 4761 bfd_byte *loc;
252b5132
RH		 4762 bfd_vma got_addr, plt_addr;
4763 bfd_vma plt_index;
4764 struct alpha_elf_got_entry *gotent;
4765
4766 BFD_ASSERT (h->dynindx != -1);
4767
252b5132
RH		 4768 splt = bfd_get_section_by_name (dynobj, ".plt");
4769 BFD_ASSERT (splt != NULL);
4770 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4771 BFD_ASSERT (srel != NULL);
252b5132 4772
6ec7057a
RH		 4773 for (gotent = ah->got_entries; gotent ; gotent = gotent->next)
4774 if (gotent->reloc_type == R_ALPHA_LITERAL
4775 && gotent->use_count > 0)
4776 {
4777 unsigned int insn;
4778 int disp;
252b5132 4779
6ec7057a
RH		 4780 sgot = alpha_elf_tdata (gotent->gotobj)->got;
4781 BFD_ASSERT (sgot != NULL);
252b5132 4782
6ec7057a
RH		 4783 BFD_ASSERT (gotent->got_offset != -1);
4784 BFD_ASSERT (gotent->plt_offset != -1);
252b5132 4785
6ec7057a
RH		 4786 got_addr = (sgot->output_section->vma
4787 + sgot->output_offset
4788 + gotent->got_offset);
4789 plt_addr = (splt->output_section->vma
4790 + splt->output_offset
4791 + gotent->plt_offset);
252b5132 4792
6ec7057a 4793 plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
252b5132 4794
6ec7057a
RH		 4795 /* Fill in the entry in the procedure linkage table. */
4796 if (elf64_alpha_use_secureplt)
4797 {
4798 disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4);
4799 insn = INSN_AD (INSN_BR, 31, disp);
4800 bfd_put_32 (output_bfd, insn,
4801 splt->contents + gotent->plt_offset);
252b5132 4802
6ec7057a
RH		 4803 plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE)
4804 / NEW_PLT_ENTRY_SIZE);
4805 }
4806 else
4807 {
4808 disp = -(gotent->plt_offset + 4);
4809 insn = INSN_AD (INSN_BR, 28, disp);
4810 bfd_put_32 (output_bfd, insn,
4811 splt->contents + gotent->plt_offset);
4812 bfd_put_32 (output_bfd, INSN_UNOP,
4813 splt->contents + gotent->plt_offset + 4);
4814 bfd_put_32 (output_bfd, INSN_UNOP,
4815 splt->contents + gotent->plt_offset + 8);
4816
4817 plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE)
4818 / OLD_PLT_ENTRY_SIZE);
4819 }
252b5132 4820
6ec7057a
RH		 4821 /* Fill in the entry in the .rela.plt section. */
4822 outrel.r_offset = got_addr;
4823 outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT);
4824 outrel.r_addend = 0;
252b5132 4825
6ec7057a
RH		 4826 loc = srel->contents + plt_index * sizeof (Elf64_External_Rela);
4827 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 4828
6ec7057a
RH		 4829 /* Fill in the entry in the .got. */
4830 bfd_put_64 (output_bfd, plt_addr,
4831 sgot->contents + gotent->got_offset);
4832 }
252b5132
RH		 4833 }
4834 else if (alpha_elf_dynamic_symbol_p (h, info))
4835 {
4836 /* Fill in the dynamic relocations for this symbol's .got entries. */
4837 asection *srel;
252b5132
RH		 4838 struct alpha_elf_got_entry *gotent;
4839
4840 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4841 BFD_ASSERT (srel != NULL);
4842
252b5132
RH		 4843 for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
4844 gotent != NULL;
4845 gotent = gotent->next)
4846 {
f44f99a5 4847 asection *sgot;
1bbc9cec 4848 long r_type;
3765b1be 4849
f44f99a5
RH		 4850 if (gotent->use_count == 0)
4851 continue;
4852
4853 sgot = alpha_elf_tdata (gotent->gotobj)->got;
3765b1be
RH		 4854
4855 r_type = gotent->reloc_type;
4856 switch (r_type)
4857 {
4858 case R_ALPHA_LITERAL:
4859 r_type = R_ALPHA_GLOB_DAT;
4860 break;
4861 case R_ALPHA_TLSGD:
4862 r_type = R_ALPHA_DTPMOD64;
4863 break;
4864 case R_ALPHA_GOTDTPREL:
4865 r_type = R_ALPHA_DTPREL64;
4866 break;
4867 case R_ALPHA_GOTTPREL:
4868 r_type = R_ALPHA_TPREL64;
4869 break;
4870 case R_ALPHA_TLSLDM:
4871 default:
4872 abort ();
4873 }
4874
1bbc9cec
RH		 4875 elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel,
4876 gotent->got_offset, h->dynindx,
4877 r_type, gotent->addend);
3765b1be
RH		 4878
4879 if (gotent->reloc_type == R_ALPHA_TLSGD)
1bbc9cec
RH		 4880 elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel,
4881 gotent->got_offset + 8, h->dynindx,
4882 R_ALPHA_DTPREL64, gotent->addend);
252b5132
RH		 4883 }
4884 }
4885
4886 /* Mark some specially defined symbols as absolute. */
4887 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1
RS		 4888 || h == elf_hash_table (info)->hgot
4889 || h == elf_hash_table (info)->hplt)
252b5132
RH		 4890 sym->st_shndx = SHN_ABS;
4891
b34976b6 4892 return TRUE;
252b5132
RH		 4893}
4894
4895/* Finish up the dynamic sections. */
4896
b34976b6 4897static bfd_boolean
a7519a3c
RH		 4898elf64_alpha_finish_dynamic_sections (bfd *output_bfd,
4899 struct bfd_link_info *info)
252b5132
RH		 4900{
4901 bfd *dynobj;
4902 asection *sdyn;
4903
4904 dynobj = elf_hash_table (info)->dynobj;
4905 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4906
4907 if (elf_hash_table (info)->dynamic_sections_created)
4908 {
6ec7057a 4909 asection *splt, *sgotplt, *srelaplt;
252b5132 4910 Elf64_External_Dyn *dyncon, *dynconend;
6ec7057a 4911 bfd_vma plt_vma, gotplt_vma;
252b5132
RH		 4912
4913 splt = bfd_get_section_by_name (dynobj, ".plt");
6ec7057a 4914 srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt");
252b5132
RH		 4915 BFD_ASSERT (splt != NULL && sdyn != NULL);
4916
6ec7057a
RH		 4917 plt_vma = splt->output_section->vma + splt->output_offset;
4918
4919 gotplt_vma = 0;
4920 if (elf64_alpha_use_secureplt)
4921 {
4922 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4923 BFD_ASSERT (sgotplt != NULL);
4924 if (sgotplt->size > 0)
4925 gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset;
4926 }
4927
252b5132 4928 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 4929 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4930 for (; dyncon < dynconend; dyncon++)
4931 {
4932 Elf_Internal_Dyn dyn;
252b5132
RH		 4933
4934 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4935
4936 switch (dyn.d_tag)
4937 {
4938 case DT_PLTGOT:
6ec7057a
RH		 4939 dyn.d_un.d_ptr
4940 = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma;
4941 break;
252b5132 4942 case DT_PLTRELSZ:
6ec7057a
RH		 4943 dyn.d_un.d_val = srelaplt ? srelaplt->size : 0;
4944 break;
252b5132 4945 case DT_JMPREL:
6ec7057a
RH		 4946 dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0;
4947 break;
252b5132
RH		 4948
4949 case DT_RELASZ:
4950 /* My interpretation of the TIS v1.1 ELF document indicates
4951 that RELASZ should not include JMPREL. This is not what
4952 the rest of the BFD does. It is, however, what the
4953 glibc ld.so wants. Do this fixup here until we found
4954 out who is right. */
6ec7057a
RH		 4955 if (srelaplt)
4956 dyn.d_un.d_val -= srelaplt->size;
252b5132
RH		 4957 break;
4958 }
4959
4960 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
4961 }
4962
6ec7057a 4963 /* Initialize the plt header. */
eea6121a 4964 if (splt->size > 0)
252b5132 4965 {
6ec7057a
RH		 4966 unsigned int insn;
4967 int ofs;
4968
4969 if (elf64_alpha_use_secureplt)
4970 {
4971 ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE);
4972
4973 insn = INSN_ABC (INSN_SUBQ, 27, 28, 25);
4974 bfd_put_32 (output_bfd, insn, splt->contents);
4975
4976 insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16);
4977 bfd_put_32 (output_bfd, insn, splt->contents + 4);
4978
4979 insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25);
4980 bfd_put_32 (output_bfd, insn, splt->contents + 8);
4981
4982 insn = INSN_ABO (INSN_LDA, 28, 28, ofs);
4983 bfd_put_32 (output_bfd, insn, splt->contents + 12);
4984
4985 insn = INSN_ABO (INSN_LDQ, 27, 28, 0);
4986 bfd_put_32 (output_bfd, insn, splt->contents + 16);
4987
4988 insn = INSN_ABC (INSN_ADDQ, 25, 25, 25);
4989 bfd_put_32 (output_bfd, insn, splt->contents + 20);
4990
4991 insn = INSN_ABO (INSN_LDQ, 28, 28, 8);
4992 bfd_put_32 (output_bfd, insn, splt->contents + 24);
4993
4994 insn = INSN_AB (INSN_JMP, 31, 27);
4995 bfd_put_32 (output_bfd, insn, splt->contents + 28);
4996
4997 insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE);
4998 bfd_put_32 (output_bfd, insn, splt->contents + 32);
4999 }
5000 else
5001 {
5002 insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */
5003 bfd_put_32 (output_bfd, insn, splt->contents);
5004
5005 insn = INSN_ABO (INSN_LDQ, 27, 27, 12);
5006 bfd_put_32 (output_bfd, insn, splt->contents + 4);
5007
5008 insn = INSN_UNOP;
5009 bfd_put_32 (output_bfd, insn, splt->contents + 8);
5010
5011 insn = INSN_AB (INSN_JMP, 27, 27);
5012 bfd_put_32 (output_bfd, insn, splt->contents + 12);
5013
5014 /* The next two words will be filled in by ld.so. */
5015 bfd_put_64 (output_bfd, 0, splt->contents + 16);
5016 bfd_put_64 (output_bfd, 0, splt->contents + 24);
5017 }
252b5132 5018
eecdbe52 5019 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0;
252b5132
RH		 5020 }
5021 }
5022
b34976b6 5023 return TRUE;
252b5132
RH		 5024}
5025
96e2734b
RH		 5026/* We need to use a special link routine to handle the .mdebug section.
5027 We need to merge all instances of these sections together, not write
5028 them all out sequentially. */
252b5132 5029
b34976b6 5030static bfd_boolean
a7519a3c 5031elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info)
252b5132
RH		 5032{
5033 asection *o;
5034 struct bfd_link_order *p;
96e2734b 5035 asection *mdebug_sec;
252b5132
RH		 5036 struct ecoff_debug_info debug;
5037 const struct ecoff_debug_swap *swap
5038 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
5039 HDRR *symhdr = &debug.symbolic_header;
4dfe6ac6
NC		 5040 void * mdebug_handle = NULL;
5041 struct alpha_elf_link_hash_table * htab;
5042
5043 htab = alpha_elf_hash_table (info);
5044 if (htab == NULL)
5045 return FALSE;
252b5132 5046
96e2734b 5047 /* Go through the sections and collect the mdebug information. */
252b5132 5048 mdebug_sec = NULL;
252b5132
RH		 5049 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
5050 {
252b5132
RH		 5051 if (strcmp (o->name, ".mdebug") == 0)
5052 {
5053 struct extsym_info einfo;
5054
5055 /* We have found the .mdebug section in the output file.
5056 Look through all the link_orders comprising it and merge
5057 the information together. */
5058 symhdr->magic = swap->sym_magic;
5059 /* FIXME: What should the version stamp be? */
5060 symhdr->vstamp = 0;
5061 symhdr->ilineMax = 0;
5062 symhdr->cbLine = 0;
5063 symhdr->idnMax = 0;
5064 symhdr->ipdMax = 0;
5065 symhdr->isymMax = 0;
5066 symhdr->ioptMax = 0;
5067 symhdr->iauxMax = 0;
5068 symhdr->issMax = 0;
5069 symhdr->issExtMax = 0;
5070 symhdr->ifdMax = 0;
5071 symhdr->crfd = 0;
5072 symhdr->iextMax = 0;
5073
5074 /* We accumulate the debugging information itself in the
5075 debug_info structure. */
5076 debug.line = NULL;
5077 debug.external_dnr = NULL;
5078 debug.external_pdr = NULL;
5079 debug.external_sym = NULL;
5080 debug.external_opt = NULL;
5081 debug.external_aux = NULL;
5082 debug.ss = NULL;
5083 debug.ssext = debug.ssext_end = NULL;
5084 debug.external_fdr = NULL;
5085 debug.external_rfd = NULL;
5086 debug.external_ext = debug.external_ext_end = NULL;
5087
5088 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
5089 if (mdebug_handle == (PTR) NULL)
b34976b6 5090 return FALSE;
252b5132
RH		 5091
5092 if (1)
5093 {
5094 asection *s;
5095 EXTR esym;
52b9d213 5096 bfd_vma last = 0;
252b5132
RH		 5097 unsigned int i;
5098 static const char * const name[] =
5099 {
5100 ".text", ".init", ".fini", ".data",
5101 ".rodata", ".sdata", ".sbss", ".bss"
5102 };
5103 static const int sc[] = { scText, scInit, scFini, scData,
5104 scRData, scSData, scSBss, scBss };
5105
5106 esym.jmptbl = 0;
5107 esym.cobol_main = 0;
5108 esym.weakext = 0;
5109 esym.reserved = 0;
5110 esym.ifd = ifdNil;
5111 esym.asym.iss = issNil;
5112 esym.asym.st = stLocal;
5113 esym.asym.reserved = 0;
5114 esym.asym.index = indexNil;
5115 for (i = 0; i < 8; i++)
5116 {
5117 esym.asym.sc = sc[i];
5118 s = bfd_get_section_by_name (abfd, name[i]);
5119 if (s != NULL)
5120 {
5121 esym.asym.value = s->vma;
eea6121a 5122 last = s->vma + s->size;
252b5132
RH		 5123 }
5124 else
5125 esym.asym.value = last;
5126
5127 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
5128 name[i], &esym))
b34976b6 5129 return FALSE;
252b5132
RH		 5130 }
5131 }
5132
8423293d 5133 for (p = o->map_head.link_order;
252b5132
RH		 5134 p != (struct bfd_link_order *) NULL;
5135 p = p->next)
5136 {
5137 asection *input_section;
5138 bfd *input_bfd;
5139 const struct ecoff_debug_swap *input_swap;
5140 struct ecoff_debug_info input_debug;
5141 char *eraw_src;
5142 char *eraw_end;
5143
5144 if (p->type != bfd_indirect_link_order)
5145 {
fd96f80f 5146 if (p->type == bfd_data_link_order)
252b5132
RH		 5147 continue;
5148 abort ();
5149 }
5150
5151 input_section = p->u.indirect.section;
5152 input_bfd = input_section->owner;
5153
0ffa91dd
NC		 5154 if (! is_alpha_elf (input_bfd))
5155 /* I don't know what a non ALPHA ELF bfd would be
5156 doing with a .mdebug section, but I don't really
5157 want to deal with it. */
5158 continue;
252b5132
RH		 5159
5160 input_swap = (get_elf_backend_data (input_bfd)
5161 ->elf_backend_ecoff_debug_swap);
5162
eea6121a 5163 BFD_ASSERT (p->size == input_section->size);
252b5132
RH		 5164
5165 /* The ECOFF linking code expects that we have already
5166 read in the debugging information and set up an
5167 ecoff_debug_info structure, so we do that now. */
5168 if (!elf64_alpha_read_ecoff_info (input_bfd, input_section,
5169 &input_debug))
b34976b6 5170 return FALSE;
252b5132
RH		 5171
5172 if (! (bfd_ecoff_debug_accumulate
5173 (mdebug_handle, abfd, &debug, swap, input_bfd,
5174 &input_debug, input_swap, info)))
b34976b6 5175 return FALSE;
252b5132
RH		 5176
5177 /* Loop through the external symbols. For each one with
5178 interesting information, try to find the symbol in
5179 the linker global hash table and save the information
5180 for the output external symbols. */
21d799b5 5181 eraw_src = (char *) input_debug.external_ext;
252b5132
RH		 5182 eraw_end = (eraw_src
5183 + (input_debug.symbolic_header.iextMax
5184 * input_swap->external_ext_size));
5185 for (;
5186 eraw_src < eraw_end;
5187 eraw_src += input_swap->external_ext_size)
5188 {
5189 EXTR ext;
5190 const char *name;
5191 struct alpha_elf_link_hash_entry *h;
5192
5193 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
5194 if (ext.asym.sc == scNil
5195 || ext.asym.sc == scUndefined
5196 || ext.asym.sc == scSUndefined)
5197 continue;
5198
5199 name = input_debug.ssext + ext.asym.iss;
4dfe6ac6 5200 h = alpha_elf_link_hash_lookup (htab, name, FALSE, FALSE, TRUE);
252b5132
RH		 5201 if (h == NULL || h->esym.ifd != -2)
5202 continue;
5203
5204 if (ext.ifd != -1)
5205 {
5206 BFD_ASSERT (ext.ifd
5207 < input_debug.symbolic_header.ifdMax);
5208 ext.ifd = input_debug.ifdmap[ext.ifd];
5209 }
5210
5211 h->esym = ext;
5212 }
5213
5214 /* Free up the information we just read. */
5215 free (input_debug.line);
5216 free (input_debug.external_dnr);
5217 free (input_debug.external_pdr);
5218 free (input_debug.external_sym);
5219 free (input_debug.external_opt);
5220 free (input_debug.external_aux);
5221 free (input_debug.ss);
5222 free (input_debug.ssext);
5223 free (input_debug.external_fdr);
5224 free (input_debug.external_rfd);
5225 free (input_debug.external_ext);
5226
5227 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5228 elf_link_input_bfd ignores this section. */
5229 input_section->flags &=~ SEC_HAS_CONTENTS;
5230 }
5231
252b5132
RH		 5232 /* Build the external symbol information. */
5233 einfo.abfd = abfd;
5234 einfo.info = info;
5235 einfo.debug = &debug;
5236 einfo.swap = swap;
b34976b6 5237 einfo.failed = FALSE;
252b5132
RH		 5238 elf_link_hash_traverse (elf_hash_table (info),
5239 elf64_alpha_output_extsym,
5240 (PTR) &einfo);
5241 if (einfo.failed)
b34976b6 5242 return FALSE;
252b5132
RH		 5243
5244 /* Set the size of the .mdebug section. */
eea6121a 5245 o->size = bfd_ecoff_debug_size (abfd, &debug, swap);
252b5132
RH		 5246
5247 /* Skip this section later on (I don't think this currently
5248 matters, but someday it might). */
8423293d 5249 o->map_head.link_order = (struct bfd_link_order *) NULL;
252b5132
RH		 5250
5251 mdebug_sec = o;
5252 }
252b5132
RH		 5253 }
5254
5255 /* Invoke the regular ELF backend linker to do all the work. */
c152c796 5256 if (! bfd_elf_final_link (abfd, info))
b34976b6 5257 return FALSE;
252b5132
RH		 5258
5259 /* Now write out the computed sections. */
5260
5261 /* The .got subsections... */
5262 {
5263 bfd *i, *dynobj = elf_hash_table(info)->dynobj;
4dfe6ac6 5264 for (i = htab->got_list;
252b5132
RH		 5265 i != NULL;
5266 i = alpha_elf_tdata(i)->got_link_next)
5267 {
5268 asection *sgot;
5269
5270 /* elf_bfd_final_link already did everything in dynobj. */
5271 if (i == dynobj)
5272 continue;
5273
5274 sgot = alpha_elf_tdata(i)->got;
5275 if (! bfd_set_section_contents (abfd, sgot->output_section,
dc810e39
AM		 5276 sgot->contents,
5277 (file_ptr) sgot->output_offset,
eea6121a 5278 sgot->size))
b34976b6 5279 return FALSE;
252b5132
RH		 5280 }
5281 }
5282
252b5132
RH		 5283 if (mdebug_sec != (asection *) NULL)
5284 {
5285 BFD_ASSERT (abfd->output_has_begun);
5286 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
5287 swap, info,
5288 mdebug_sec->filepos))
b34976b6 5289 return FALSE;
252b5132
RH		 5290
5291 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
5292 }
5293
b34976b6 5294 return TRUE;
252b5132 5295}
fcfbdf31
JJ		 5296
5297static enum elf_reloc_type_class
a7519a3c 5298elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela)
fcfbdf31 5299{
f51e552e 5300 switch ((int) ELF64_R_TYPE (rela->r_info))
fcfbdf31
JJ		 5301 {
5302 case R_ALPHA_RELATIVE:
5303 return reloc_class_relative;
5304 case R_ALPHA_JMP_SLOT:
5305 return reloc_class_plt;
5306 case R_ALPHA_COPY:
5307 return reloc_class_copy;
5308 default:
5309 return reloc_class_normal;
5310 }
5311}
252b5132 5312\f
b35d266b 5313static const struct bfd_elf_special_section elf64_alpha_special_sections[] =
2f89ff8d 5314{
0112cd26
NC		 5315 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL },
5316 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL },
5317 { NULL, 0, 0, 0, 0 }
2f89ff8d
L		 5318};
5319
252b5132
RH		 5320/* ECOFF swapping routines. These are used when dealing with the
5321 .mdebug section, which is in the ECOFF debugging format. Copied
fe8bc63d 5322 from elf32-mips.c. */
252b5132
RH		 5323static const struct ecoff_debug_swap
5324elf64_alpha_ecoff_debug_swap =
5325{
5326 /* Symbol table magic number. */
5327 magicSym2,
5328 /* Alignment of debugging information. E.g., 4. */
5329 8,
5330 /* Sizes of external symbolic information. */
5331 sizeof (struct hdr_ext),
5332 sizeof (struct dnr_ext),
5333 sizeof (struct pdr_ext),
5334 sizeof (struct sym_ext),
5335 sizeof (struct opt_ext),
5336 sizeof (struct fdr_ext),
5337 sizeof (struct rfd_ext),
5338 sizeof (struct ext_ext),
5339 /* Functions to swap in external symbolic data. */
5340 ecoff_swap_hdr_in,
5341 ecoff_swap_dnr_in,
5342 ecoff_swap_pdr_in,
5343 ecoff_swap_sym_in,
5344 ecoff_swap_opt_in,
5345 ecoff_swap_fdr_in,
5346 ecoff_swap_rfd_in,
5347 ecoff_swap_ext_in,
5348 _bfd_ecoff_swap_tir_in,
5349 _bfd_ecoff_swap_rndx_in,
5350 /* Functions to swap out external symbolic data. */
5351 ecoff_swap_hdr_out,
5352 ecoff_swap_dnr_out,
5353 ecoff_swap_pdr_out,
5354 ecoff_swap_sym_out,
5355 ecoff_swap_opt_out,
5356 ecoff_swap_fdr_out,
5357 ecoff_swap_rfd_out,
5358 ecoff_swap_ext_out,
5359 _bfd_ecoff_swap_tir_out,
5360 _bfd_ecoff_swap_rndx_out,
5361 /* Function to read in symbolic data. */
5362 elf64_alpha_read_ecoff_info
5363};
5364\f
70bcb145
JW		 5365/* Use a non-standard hash bucket size of 8. */
5366
562ace6b 5367static const struct elf_size_info alpha_elf_size_info =
70bcb145
JW		 5368{
5369 sizeof (Elf64_External_Ehdr),
5370 sizeof (Elf64_External_Phdr),
5371 sizeof (Elf64_External_Shdr),
5372 sizeof (Elf64_External_Rel),
5373 sizeof (Elf64_External_Rela),
5374 sizeof (Elf64_External_Sym),
5375 sizeof (Elf64_External_Dyn),
5376 sizeof (Elf_External_Note),
5377 8,
5378 1,
45d6a902 5379 64, 3,
70bcb145
JW		 5380 ELFCLASS64, EV_CURRENT,
5381 bfd_elf64_write_out_phdrs,
5382 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 5383 bfd_elf64_checksum_contents,
70bcb145 5384 bfd_elf64_write_relocs,
73ff0d56 5385 bfd_elf64_swap_symbol_in,
70bcb145
JW		 5386 bfd_elf64_swap_symbol_out,
5387 bfd_elf64_slurp_reloc_table,
5388 bfd_elf64_slurp_symbol_table,
5389 bfd_elf64_swap_dyn_in,
5390 bfd_elf64_swap_dyn_out,
947216bf
AM		 5391 bfd_elf64_swap_reloc_in,
5392 bfd_elf64_swap_reloc_out,
5393 bfd_elf64_swap_reloca_in,
5394 bfd_elf64_swap_reloca_out
70bcb145
JW		 5395};
5396
252b5132
RH		 5397#define TARGET_LITTLE_SYM bfd_elf64_alpha_vec
5398#define TARGET_LITTLE_NAME "elf64-alpha"
5399#define ELF_ARCH bfd_arch_alpha
ae95ffa6 5400#define ELF_TARGET_ID ALPHA_ELF_DATA
56fc028e
AJ		 5401#define ELF_MACHINE_CODE EM_ALPHA
5402#define ELF_MAXPAGESIZE 0x10000
24718e3b 5403#define ELF_COMMONPAGESIZE 0x2000
252b5132
RH		 5404
5405#define bfd_elf64_bfd_link_hash_table_create \
5406 elf64_alpha_bfd_link_hash_table_create
5407
5408#define bfd_elf64_bfd_reloc_type_lookup \
5409 elf64_alpha_bfd_reloc_type_lookup
157090f7
AM		 5410#define bfd_elf64_bfd_reloc_name_lookup \
5411 elf64_alpha_bfd_reloc_name_lookup
252b5132
RH		 5412#define elf_info_to_howto \
5413 elf64_alpha_info_to_howto
5414
5415#define bfd_elf64_mkobject \
5416 elf64_alpha_mkobject
5417#define elf_backend_object_p \
5418 elf64_alpha_object_p
5419
5420#define elf_backend_section_from_shdr \
5421 elf64_alpha_section_from_shdr
204692d7
RH		 5422#define elf_backend_section_flags \
5423 elf64_alpha_section_flags
252b5132
RH		 5424#define elf_backend_fake_sections \
5425 elf64_alpha_fake_sections
5426
5427#define bfd_elf64_bfd_is_local_label_name \
5428 elf64_alpha_is_local_label_name
5429#define bfd_elf64_find_nearest_line \
5430 elf64_alpha_find_nearest_line
5431#define bfd_elf64_bfd_relax_section \
5432 elf64_alpha_relax_section
5433
5434#define elf_backend_add_symbol_hook \
5435 elf64_alpha_add_symbol_hook
13285a1b
AM		 5436#define elf_backend_relocs_compatible \
5437 _bfd_elf_relocs_compatible
252b5132
RH		 5438#define elf_backend_check_relocs \
5439 elf64_alpha_check_relocs
5440#define elf_backend_create_dynamic_sections \
5441 elf64_alpha_create_dynamic_sections
5442#define elf_backend_adjust_dynamic_symbol \
5443 elf64_alpha_adjust_dynamic_symbol
747ffa7b
AM		 5444#define elf_backend_merge_symbol_attribute \
5445 elf64_alpha_merge_symbol_attribute
48f4b4f5
RH		 5446#define elf_backend_copy_indirect_symbol \
5447 elf64_alpha_copy_indirect_symbol
252b5132
RH		 5448#define elf_backend_always_size_sections \
5449 elf64_alpha_always_size_sections
5450#define elf_backend_size_dynamic_sections \
5451 elf64_alpha_size_dynamic_sections
74541ad4
AM		 5452#define elf_backend_omit_section_dynsym \
5453 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
252b5132
RH		 5454#define elf_backend_relocate_section \
5455 elf64_alpha_relocate_section
5456#define elf_backend_finish_dynamic_symbol \
5457 elf64_alpha_finish_dynamic_symbol
5458#define elf_backend_finish_dynamic_sections \
5459 elf64_alpha_finish_dynamic_sections
5460#define bfd_elf64_bfd_final_link \
5461 elf64_alpha_final_link
fcfbdf31
JJ		 5462#define elf_backend_reloc_type_class \
5463 elf64_alpha_reloc_type_class
252b5132 5464
e117360e
RH		 5465#define elf_backend_can_gc_sections 1
5466#define elf_backend_gc_mark_hook elf64_alpha_gc_mark_hook
5467#define elf_backend_gc_sweep_hook elf64_alpha_gc_sweep_hook
5468
252b5132
RH		 5469#define elf_backend_ecoff_debug_swap \
5470 &elf64_alpha_ecoff_debug_swap
5471
70bcb145
JW		 5472#define elf_backend_size_info \
5473 alpha_elf_size_info
5474
29ef7005
L		 5475#define elf_backend_special_sections \
5476 elf64_alpha_special_sections
2f89ff8d 5477
38b1a46c 5478/* A few constants that determine how the .plt section is set up. */
252b5132
RH		 5479#define elf_backend_want_got_plt 0
5480#define elf_backend_plt_readonly 0
5481#define elf_backend_want_plt_sym 1
5482#define elf_backend_got_header_size 0
252b5132
RH		 5483
5484#include "elf64-target.h"
2238051f
RH		 5485\f
5486/* FreeBSD support. */
5487
5488#undef TARGET_LITTLE_SYM
5489#define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec
5490#undef TARGET_LITTLE_NAME
5491#define TARGET_LITTLE_NAME "elf64-alpha-freebsd"
d1036acb
L		 5492#undef ELF_OSABI
5493#define ELF_OSABI ELFOSABI_FREEBSD
2238051f
RH		 5494
5495/* The kernel recognizes executables as valid only if they carry a
5496 "FreeBSD" label in the ELF header. So we put this label on all
5497 executables and (for simplicity) also all other object files. */
5498
2238051f 5499static void
a7519a3c
RH		 5500elf64_alpha_fbsd_post_process_headers (bfd * abfd,
5501 struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
2238051f
RH		 5502{
5503 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
5504
5505 i_ehdrp = elf_elfheader (abfd);
5506
5507 /* Put an ABI label supported by FreeBSD >= 4.1. */
d1036acb 5508 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
2238051f
RH		 5509#ifdef OLD_FREEBSD_ABI_LABEL
5510 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5511 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5512#endif
5513}
5514
5515#undef elf_backend_post_process_headers
5516#define elf_backend_post_process_headers \
5517 elf64_alpha_fbsd_post_process_headers
5518
571fe01f 5519#undef elf64_bed
2238051f
RH		 5520#define elf64_bed elf64_alpha_fbsd_bed
5521
5522#include "elf64-target.h"
GDB Binutils - Deliverables
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