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[thirdparty/binutils-gdb.git] / bfd / elf32-xgate.c
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a8acc5fb 1/* Freescale XGATE-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 2010-2016 Free Software Foundation, Inc.
a8acc5fb
NC		 3 Contributed by Sean Keys(skeys@ipdatasys.com)
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf32-xgate.h"
28#include "elf/xgate.h"
29#include "opcode/xgate.h"
30#include "libiberty.h"
31
32/* Relocation functions. */
33static reloc_howto_type *
34bfd_elf32_bfd_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
35static reloc_howto_type *
36bfd_elf32_bfd_reloc_name_lookup (bfd *, const char *);
37static void
38xgate_info_to_howto_rel (bfd *, arelent *, Elf_Internal_Rela *);
39static bfd_boolean
40xgate_elf_set_mach_from_flags (bfd *);
41static struct bfd_hash_entry *
42stub_hash_newfunc (struct bfd_hash_entry *, struct bfd_hash_table *,
43 const char *);
44static struct bfd_link_hash_table*
45xgate_elf_bfd_link_hash_table_create (bfd *);
46
47/* Use REL instead of RELA to save space */
48#define USE_REL 1
49
50static reloc_howto_type elf_xgate_howto_table[] =
51{
52 /* This reloc does nothing. */
53 HOWTO (R_XGATE_NONE, /* type */
54 0, /* rightshift */
6346d5ca
AM		 55 3, /* size (0 = byte, 1 = short, 2 = long) */
56 0, /* bitsize */
a8acc5fb
NC		 57 FALSE, /* pc_relative */
58 0, /* bitpos */
59 complain_overflow_dont,/* complain_on_overflow */
60 bfd_elf_generic_reloc, /* special_function */
61 "R_XGATE_NONE", /* name */
62 FALSE, /* partial_inplace */
63 0, /* src_mask */
64 0, /* dst_mask */
65 FALSE), /* pcrel_offset */
66
67 /* A 8 bit absolute relocation. */
68 HOWTO (R_XGATE_8, /* type */
69 0, /* rightshift */
70 0, /* size (0 = byte, 1 = short, 2 = long) */
71 8, /* bitsize */
72 FALSE, /* pc_relative */
73 0, /* bitpos */
74 complain_overflow_bitfield, /* complain_on_overflow */
75 bfd_elf_generic_reloc, /* special_function */
76 "R_XGATE_8", /* name */
77 FALSE, /* partial_inplace */
78 0x00ff, /* src_mask */
79 0x00ff, /* dst_mask */
80 FALSE), /* pcrel_offset */
81
82 /* A 8 bit PC-rel relocation. */
83 HOWTO (R_XGATE_PCREL_8, /* type */
84 0, /* rightshift */
85 0, /* size (0 = byte, 1 = short, 2 = long) */
86 8, /* bitsize */
87 TRUE, /* pc_relative */
88 0, /* bitpos */
89 complain_overflow_bitfield, /* complain_on_overflow */
90 bfd_elf_generic_reloc, /* special_function */
91 "R_XGATE_PCREL_8", /* name */
92 FALSE, /* partial_inplace */
93 0x00ff, /* src_mask */
94 0x00ff, /* dst_mask */
95 TRUE), /* pcrel_offset */
96
97 /* A 16 bit absolute relocation. */
98 HOWTO (R_XGATE_16, /* type */
99 0, /* rightshift */
100 1, /* size (0 = byte, 1 = short, 2 = long) */
101 16, /* bitsize */
102 FALSE, /* pc_relative */
103 0, /* bitpos */
104 complain_overflow_dont /*bitfield */, /* complain_on_overflow */
105 bfd_elf_generic_reloc, /* special_function */
106 "R_XGATE_16", /* name */
107 FALSE, /* partial_inplace */
d6273433
SK		 108 0xffff, /* src_mask */
109 0xffff, /* dst_mask */
a8acc5fb
NC		 110 FALSE), /* pcrel_offset */
111
112 /* A 32 bit absolute relocation. This one is never used for the
113 code relocation. It's used by gas for -gstabs generation. */
114 HOWTO (R_XGATE_32, /* type */
115 0, /* rightshift */
116 2, /* size (0 = byte, 1 = short, 2 = long) */
117 32, /* bitsize */
118 FALSE, /* pc_relative */
119 0, /* bitpos */
120 complain_overflow_bitfield, /* complain_on_overflow */
121 bfd_elf_generic_reloc, /* special_function */
122 "R_XGATE_32", /* name */
123 FALSE, /* partial_inplace */
124 0xffffffff, /* src_mask */
125 0xffffffff, /* dst_mask */
126 FALSE), /* pcrel_offset */
127
128 /* A 16 bit PC-rel relocation. */
129 HOWTO (R_XGATE_PCREL_16, /* type */
130 0, /* rightshift */
131 1, /* size (0 = byte, 1 = short, 2 = long) */
132 16, /* bitsize */
133 TRUE, /* pc_relative */
134 0, /* bitpos */
135 complain_overflow_dont, /* complain_on_overflow */
136 bfd_elf_generic_reloc, /* special_function */
137 "R_XGATE_PCREL_16", /* name */
138 FALSE, /* partial_inplace */
139 0xffff, /* src_mask */
140 0xffff, /* dst_mask */
141 TRUE), /* pcrel_offset */
142
143 /* GNU extension to record C++ vtable hierarchy. */
144 HOWTO (R_XGATE_GNU_VTINHERIT, /* type */
145 0, /* rightshift */
146 1, /* size (0 = byte, 1 = short, 2 = long) */
147 0, /* bitsize */
148 FALSE, /* pc_relative */
149 0, /* bitpos */
150 complain_overflow_dont, /* complain_on_overflow */
151 NULL, /* special_function */
152 "R_XGATE_GNU_VTINHERIT", /* name */
153 FALSE, /* partial_inplace */
154 0, /* src_mask */
155 0, /* dst_mask */
156 FALSE), /* pcrel_offset */
157
158 /* GNU extension to record C++ vtable member usage. */
159 HOWTO (R_XGATE_GNU_VTENTRY, /* type */
160 0, /* rightshift */
161 1, /* size (0 = byte, 1 = short, 2 = long) */
162 0, /* bitsize */
163 FALSE, /* pc_relative */
164 0, /* bitpos */
165 complain_overflow_dont, /* complain_on_overflow */
166 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
167 "R_XGATE_GNU_VTENTRY", /* name */
168 FALSE, /* partial_inplace */
169 0, /* src_mask */
170 0, /* dst_mask */
171 FALSE), /* pcrel_offset */
172
173 /* A 24 bit relocation. */
174 HOWTO (R_XGATE_24, /* type */
175 0, /* rightshift */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
177 16, /* bitsize */
178 FALSE, /* pc_relative */
179 0, /* bitpos */
180 complain_overflow_dont, /* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_XGATE_IMM8_LO", /* name */
183 FALSE, /* partial_inplace */
184 0x00ff, /* src_mask */
185 0x00ff, /* dst_mask */
186 FALSE), /* pcrel_offset */
187
188 /* A 16-bit low relocation. */
189 HOWTO (R_XGATE_LO16, /* type */
190 8, /* rightshift */
191 1, /* size (0 = byte, 1 = short, 2 = long) */
192 16, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_dont, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_XGATE_IMM8_HI", /* name */
198 FALSE, /* partial_inplace */
199 0x00ff, /* src_mask */
200 0x00ff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 /* A page relocation. */
204 HOWTO (R_XGATE_GPAGE, /* type */
205 0, /* rightshift */
206 0, /* size (0 = byte, 1 = short, 2 = long) */
207 8, /* bitsize */
208 FALSE, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_dont, /* complain_on_overflow */
211 xgate_elf_special_reloc,/* special_function */
212 "R_XGATE_GPAGE", /* name */
213 FALSE, /* partial_inplace */
214 0x00ff, /* src_mask */
215 0x00ff, /* dst_mask */
216 FALSE), /* pcrel_offset */
217
218 /* A 9 bit absolute relocation. */
219 HOWTO (R_XGATE_PCREL_9, /* type */
220 0, /* rightshift */
221 1, /* size (0 = byte, 1 = short, 2 = long) */
222 9, /* bitsize */
223 TRUE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_XGATE_PCREL_9", /* name */
228 FALSE, /* partial_inplace */
229 0xffff, /* src_mask */
230 0xffff, /* dst_mask */
231 TRUE), /* pcrel_offset */
232
233 /* A 8 bit absolute relocation (upper address). */
234 HOWTO (R_XGATE_PCREL_10, /* type */
235 8, /* rightshift */
236 0, /* size (0 = byte, 1 = short, 2 = long) */
237 10, /* bitsize */
238 TRUE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_dont, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_XGATE_PCREL_10", /* name */
243 FALSE, /* partial_inplace */
244 0x00ff, /* src_mask */
245 0x00ff, /* dst_mask */
246 TRUE), /* pcrel_offset */
247
248 /* A 8 bit absolute relocation. */
249 HOWTO (R_XGATE_IMM8_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_dont, /* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_XGATE_IMM8_LO", /* name */
258 FALSE, /* partial_inplace */
259 0xffff, /* src_mask */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* A 16 bit absolute relocation (upper address). */
264 HOWTO (R_XGATE_IMM8_HI, /* type */
265 8, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_XGATE_IMM8_HI", /* name */
273 FALSE, /* partial_inplace */
274 0x00ff, /* src_mask */
275 0x00ff, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* A 3 bit absolute relocation. */
279 HOWTO (R_XGATE_IMM3, /* type */
280 8, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
283 FALSE, /* pc_relative */
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_XGATE_IMM3", /* name */
288 FALSE, /* partial_inplace */
289 0x00ff, /* src_mask */
290 0x00ff, /* dst_mask */
291 FALSE), /* pcrel_offset */
292
293 /* A 4 bit absolute relocation. */
294 HOWTO (R_XGATE_IMM4, /* type */
295 8, /* rightshift */
296 1, /* size (0 = byte, 1 = short, 2 = long) */
297 16, /* bitsize */
298 FALSE, /* pc_relative */
299 0, /* bitpos */
300 complain_overflow_dont, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_XGATE_IMM4", /* name */
303 FALSE, /* partial_inplace */
304 0x00ff, /* src_mask */
305 0x00ff, /* dst_mask */
306 FALSE), /* pcrel_offset */
307
308 /* A 5 bit absolute relocation. */
309 HOWTO (R_XGATE_IMM5, /* type */
310 8, /* rightshift */
311 1, /* size (0 = byte, 1 = short, 2 = long) */
312 16, /* bitsize */
313 FALSE, /* pc_relative */
314 0, /* bitpos */
315 complain_overflow_dont, /* complain_on_overflow */
316 bfd_elf_generic_reloc, /* special_function */
317 "R_XGATE_IMM5", /* name */
318 FALSE, /* partial_inplace */
319 0x00ff, /* src_mask */
320 0x00ff, /* dst_mask */
321 FALSE), /* pcrel_offset */
322
323 /* Mark beginning of a jump instruction (any form). */
324 HOWTO (R_XGATE_RL_JUMP, /* type */
325 0, /* rightshift */
326 1, /* size (0 = byte, 1 = short, 2 = long) */
327 0, /* bitsize */
328 FALSE, /* pc_relative */
329 0, /* bitpos */
330 complain_overflow_dont, /* complain_on_overflow */
331 xgate_elf_ignore_reloc, /* special_function */
332 "R_XGATE_RL_JUMP", /* name */
333 TRUE, /* partial_inplace */
334 0, /* src_mask */
335 0, /* dst_mask */
336 TRUE), /* pcrel_offset */
337
338 /* Mark beginning of Gcc relaxation group instruction. */
339 HOWTO (R_XGATE_RL_GROUP, /* type */
340 0, /* rightshift */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
342 0, /* bitsize */
343 FALSE, /* pc_relative */
344 0, /* bitpos */
345 complain_overflow_dont, /* complain_on_overflow */
346 xgate_elf_ignore_reloc, /* special_function */
347 "R_XGATE_RL_GROUP", /* name */
348 TRUE, /* partial_inplace */
349 0, /* src_mask */
350 0, /* dst_mask */
351 TRUE), /* pcrel_offset */
352};
353
354/* Map BFD reloc types to XGATE ELF reloc types. */
355
356struct xgate_reloc_map
357{
358 bfd_reloc_code_real_type bfd_reloc_val;
359 unsigned char elf_reloc_val;
360};
361
362static const struct xgate_reloc_map xgate_reloc_map[] =
363{
364 {BFD_RELOC_NONE, R_XGATE_NONE},
365 {BFD_RELOC_8, R_XGATE_8},
366 {BFD_RELOC_8_PCREL, R_XGATE_PCREL_8},
367 {BFD_RELOC_16_PCREL, R_XGATE_PCREL_16},
368 {BFD_RELOC_16, R_XGATE_16},
369 {BFD_RELOC_32, R_XGATE_32},
370
371 {BFD_RELOC_VTABLE_INHERIT, R_XGATE_GNU_VTINHERIT},
372 {BFD_RELOC_VTABLE_ENTRY, R_XGATE_GNU_VTENTRY},
373
374 {BFD_RELOC_XGATE_LO16, R_XGATE_LO16},
375 {BFD_RELOC_XGATE_GPAGE, R_XGATE_GPAGE},
376 {BFD_RELOC_XGATE_24, R_XGATE_24},
377 {BFD_RELOC_XGATE_PCREL_9, R_XGATE_PCREL_9},
378 {BFD_RELOC_XGATE_PCREL_10, R_XGATE_PCREL_10},
379 {BFD_RELOC_XGATE_IMM8_LO, R_XGATE_IMM8_LO},
380 {BFD_RELOC_XGATE_IMM8_HI, R_XGATE_IMM8_HI},
381 {BFD_RELOC_XGATE_IMM3, R_XGATE_IMM3},
382 {BFD_RELOC_XGATE_IMM4, R_XGATE_IMM4},
383 {BFD_RELOC_XGATE_IMM5, R_XGATE_IMM5},
384
385 {BFD_RELOC_XGATE_RL_JUMP, R_XGATE_RL_JUMP},
386 {BFD_RELOC_XGATE_RL_GROUP, R_XGATE_RL_GROUP},
387};
388
389static reloc_howto_type *
390bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
391 bfd_reloc_code_real_type code)
392{
393 unsigned int i;
394
395 for (i = 0; i < ARRAY_SIZE (xgate_reloc_map); i++)
396 if (xgate_reloc_map[i].bfd_reloc_val == code)
397 return &elf_xgate_howto_table[xgate_reloc_map[i].elf_reloc_val];
398
399 return NULL;
400}
401
402static reloc_howto_type *
403bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
404{
405 unsigned int i;
406
407 for (i = 0; i < ARRAY_SIZE (elf_xgate_howto_table); i++)
408 if (elf_xgate_howto_table[i].name != NULL
409 && strcasecmp (elf_xgate_howto_table[i].name, r_name) == 0)
410 return &elf_xgate_howto_table[i];
411
412 return NULL;
413}
414
415/* Set the howto pointer for an XGATE ELF reloc. */
416
417static void
418xgate_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
419 arelent *cache_ptr,
420 Elf_Internal_Rela *dst)
421{
422 unsigned int r_type;
423
424 r_type = ELF32_R_TYPE (dst->r_info);
5860e3f8
NC		 425 if (r_type >= (unsigned int) R_XGATE_max)
426 {
64d29018 427 _bfd_error_handler (_("%B: invalid XGate reloc number: %d"), abfd, r_type);
5860e3f8
NC		 428 r_type = 0;
429 }
a8acc5fb
NC		 430 cache_ptr->howto = &elf_xgate_howto_table[r_type];
431}
432
d495ab0d 433/* Destroy an XGATE ELF linker hash table. */
a8acc5fb 434
d495ab0d
AM		 435static void
436xgate_elf_bfd_link_hash_table_free (bfd *obfd)
a8acc5fb
NC		 437{
438 struct xgate_elf_link_hash_table *ret =
d495ab0d 439 (struct xgate_elf_link_hash_table *) obfd->link.hash;
a8acc5fb
NC		 440
441 bfd_hash_table_free (ret->stub_hash_table);
442 free (ret->stub_hash_table);
d495ab0d 443 _bfd_elf_link_hash_table_free (obfd);
a8acc5fb
NC		 444}
445
d495ab0d 446/* Create an XGATE ELF linker hash table. */
a8acc5fb
NC		 447
448static struct bfd_link_hash_table*
449xgate_elf_bfd_link_hash_table_create (bfd *abfd)
450{
451 struct xgate_elf_link_hash_table *ret;
452 bfd_size_type amt = sizeof(struct xgate_elf_link_hash_table);
453
7bf52ea2 454 ret = (struct xgate_elf_link_hash_table *) bfd_zmalloc (amt);
a8acc5fb
NC		 455 if (ret == (struct xgate_elf_link_hash_table *) NULL)
456 return NULL;
457
a8acc5fb
NC		 458 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
459 _bfd_elf_link_hash_newfunc, sizeof(struct elf_link_hash_entry),
460 XGATE_ELF_DATA))
461 {
462 free (ret);
463 return NULL;
464 }
465
466 /* Init the stub hash table too. */
467 amt = sizeof(struct bfd_hash_table);
7bf52ea2 468 ret->stub_hash_table = (struct bfd_hash_table*) bfd_zmalloc (amt);
a8acc5fb
NC		 469 if (ret->stub_hash_table == NULL)
470 {
d495ab0d 471 _bfd_elf_link_hash_table_free (abfd);
a8acc5fb
NC		 472 return NULL;
473 }
474
475 if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc,
476 sizeof(struct elf32_xgate_stub_hash_entry)))
7bf52ea2
AM		 477 {
478 free (ret->stub_hash_table);
d495ab0d 479 _bfd_elf_link_hash_table_free (abfd);
7bf52ea2
AM		 480 return NULL;
481 }
d495ab0d 482 ret->root.root.hash_table_free = xgate_elf_bfd_link_hash_table_free;
a8acc5fb
NC		 483
484 return &ret->root.root;
485}
486
487static bfd_boolean
488xgate_elf_set_mach_from_flags (bfd *abfd ATTRIBUTE_UNUSED)
489{
490 return TRUE;
491}
492
493/* Specific sections:
494 - The .page0 is a data section that is mapped in [0x0000..0x00FF].
495 Page0 accesses are faster on the M68HC12.
496 - The .vectors is the section that represents the interrupt
497 vectors.
498 - The .xgate section is starts in 0xE08800 or as xgate sees it 0x0800. */
499static const struct bfd_elf_special_section elf32_xgate_special_sections[] =
500{
501 { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
502 { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
503 { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
504 { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
505/*{ STRING_COMMA_LEN (".xgate"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
506 TODO finish this implementation */
507 { NULL, 0, 0, 0, 0 }
508};
509
510struct xgate_scan_param
511{
512 struct xgate_page_info* pinfo;
513 bfd_boolean use_memory_banks;
514};
515
516/* Assorted hash table functions. */
517
518/* Initialize an entry in the stub hash table. */
519
520static struct bfd_hash_entry *
521stub_hash_newfunc (struct bfd_hash_entry *entry,
522 struct bfd_hash_table *table ATTRIBUTE_UNUSED,
523 const char *string ATTRIBUTE_UNUSED)
524{
525 return entry;
526}
527
528/* Hook called by the linker routine which adds symbols from an object
529 file. */
530
531bfd_boolean
532elf32_xgate_add_symbol_hook (bfd *abfd ATTRIBUTE_UNUSED,
533 struct bfd_link_info *info ATTRIBUTE_UNUSED,
fe540416 534 Elf_Internal_Sym *sym,
a8acc5fb
NC		 535 const char **namep ATTRIBUTE_UNUSED,
536 flagword *flagsp ATTRIBUTE_UNUSED,
537 asection **secp ATTRIBUTE_UNUSED,
538 bfd_vma *valp ATTRIBUTE_UNUSED)
539{
fe540416
SK		 540 /* For some reason the st_target_internal value is not retained
541 after xgate_frob_symbol is called, hence this temp hack. */
542 sym->st_target_internal = 1;
a8acc5fb
NC		 543 return TRUE;
544}
545
546/* External entry points for sizing and building linker stubs. */
547
548/* Set up various things so that we can make a list of input sections
549 for each output section included in the link. Returns -1 on error,
550 0 when no stubs will be needed, and 1 on success. */
551
552int
553elf32_xgate_setup_section_lists (bfd *output_bfd ATTRIBUTE_UNUSED,
554 struct bfd_link_info *info ATTRIBUTE_UNUSED)
555{
556 return 1;
557}
558
559/* Determine and set the size of the stub section for a final link.
560 The basic idea here is to examine all the relocations looking for
561 PC-relative calls to a target that is unreachable with any "9-bit PC-REL"
562 instruction. */
563
564bfd_boolean
565elf32_xgate_size_stubs (bfd *output_bfd ATTRIBUTE_UNUSED,
566 bfd *stub_bfd ATTRIBUTE_UNUSED,
567 struct bfd_link_info *info ATTRIBUTE_UNUSED,
568 asection * (*add_stub_section) (const char*, asection*) ATTRIBUTE_UNUSED)
569{
570 return FALSE;
571}
572
573/* Build all the stubs associated with the current output file. The
574 stubs are kept in a hash table attached to the main linker hash
575 table. This function is called via xgateelf_finish in the
576 linker. */
577
578bfd_boolean
579elf32_xgate_build_stubs (bfd *abfd ATTRIBUTE_UNUSED,
580 struct bfd_link_info *info ATTRIBUTE_UNUSED)
581{
582 return TRUE;
583}
584
585void
586xgate_elf_get_bank_parameters (struct bfd_link_info *info ATTRIBUTE_UNUSED)
587{
588 return;
589}
590
591/* This function is used for relocs which are only used for relaxing,
592 which the linker should otherwise ignore. */
593
594bfd_reloc_status_type
595xgate_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
596 arelent *reloc_entry,
597 asymbol *symbol ATTRIBUTE_UNUSED,
598 void *data ATTRIBUTE_UNUSED,
599 asection *input_section,
600 bfd *output_bfd,
601 char **error_message ATTRIBUTE_UNUSED)
602{
603 if (output_bfd != NULL)
604 reloc_entry->address += input_section->output_offset;
605 return bfd_reloc_ok;
606}
607
608bfd_reloc_status_type
609xgate_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED,
610 arelent *reloc_entry ATTRIBUTE_UNUSED,
611 asymbol *symbol ATTRIBUTE_UNUSED,
612 void *data ATTRIBUTE_UNUSED,
613 asection *input_section ATTRIBUTE_UNUSED,
614 bfd *output_bfd ATTRIBUTE_UNUSED,
615 char **error_message ATTRIBUTE_UNUSED)
616{
617 abort ();
618}
619
620/* Look through the relocs for a section during the first phase.
621 Since we don't do .gots or .plts, we just need to consider the
622 virtual table relocs for gc. */
623
624bfd_boolean
625elf32_xgate_check_relocs (bfd *abfd ATTRIBUTE_UNUSED,
626 struct bfd_link_info *info ATTRIBUTE_UNUSED,
627 asection *sec ATTRIBUTE_UNUSED,
628 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
629{
630 return TRUE;
631}
632
633/* Relocate a XGATE/S12x ELF section. */
634
635bfd_boolean
636elf32_xgate_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
637 struct bfd_link_info *info ATTRIBUTE_UNUSED,
638 bfd *input_bfd ATTRIBUTE_UNUSED,
639 asection *input_section ATTRIBUTE_UNUSED,
640 bfd_byte *contents ATTRIBUTE_UNUSED,
641 Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED,
642 Elf_Internal_Sym *local_syms ATTRIBUTE_UNUSED,
643 asection **local_sections ATTRIBUTE_UNUSED)
644{
645 return TRUE;
646}
647
648/* Set and control ELF flags in ELF header. */
649
650bfd_boolean
651_bfd_xgate_elf_set_private_flags (bfd *abfd ATTRIBUTE_UNUSED,
652 flagword flags ATTRIBUTE_UNUSED)
653{
654 return TRUE;
655}
656
657/* Merge backend specific data from an object file to the output
658 object file when linking. */
659
660bfd_boolean
661_bfd_xgate_elf_merge_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED,
662 bfd *obfd ATTRIBUTE_UNUSED)
663{
664 return TRUE;
665}
666
667bfd_boolean
668_bfd_xgate_elf_print_private_bfd_data (bfd *abfd, void *ptr)
669{
670 FILE *file = (FILE *) ptr;
671
672 BFD_ASSERT (abfd != NULL && ptr != NULL);
673
674 /* Print normal ELF private data. */
675 _bfd_elf_print_private_bfd_data (abfd, ptr);
676
677 /* xgettext:c-format */
678 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
679
680 if (elf_elfheader (abfd)->e_flags & E_XGATE_I32)
681 fprintf (file, _("[abi=32-bit int, "));
682 else
683 fprintf (file, _("[abi=16-bit int, "));
684
685 if (elf_elfheader (abfd)->e_flags & E_XGATE_F64)
686 fprintf (file, _("64-bit double, "));
687 else
688 fprintf (file, _("32-bit double, "));
689 if (elf_elfheader (abfd)->e_flags & EF_XGATE_MACH)
690 fprintf (file, _("cpu=XGATE]"));
691 else
692 fprintf (file, _("error reading cpu type from elf private data"));
693 fputc ('\n', file);
694
695 return TRUE;
696}
697
698void
699elf32_xgate_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
700{
701
702}
703
704#define ELF_ARCH bfd_arch_xgate
705#define ELF_MACHINE_CODE EM_XGATE
706#define ELF_TARGET_ID XGATE_ELF_DATA
707
708#define ELF_MAXPAGESIZE 0x1000
709
6d00b590 710#define TARGET_BIG_SYM xgate_elf32_vec
a8acc5fb
NC		 711#define TARGET_BIG_NAME "elf32-xgate"
712
713#define elf_info_to_howto 0
714#define elf_info_to_howto_rel xgate_info_to_howto_rel
715#define elf_backend_check_relocs elf32_xgate_check_relocs
716#define elf_backend_relocate_section elf32_xgate_relocate_section
717#define elf_backend_object_p xgate_elf_set_mach_from_flags
718#define elf_backend_final_write_processing 0
719#define elf_backend_can_gc_sections 1
720#define elf_backend_special_sections elf32_xgate_special_sections
721#define elf_backend_post_process_headers elf32_xgate_post_process_headers
722#define elf_backend_add_symbol_hook elf32_xgate_add_symbol_hook
723
724#define bfd_elf32_bfd_link_hash_table_create xgate_elf_bfd_link_hash_table_create
a8acc5fb
NC		 725#define bfd_elf32_bfd_merge_private_bfd_data _bfd_xgate_elf_merge_private_bfd_data
726#define bfd_elf32_bfd_set_private_flags _bfd_xgate_elf_set_private_flags
727#define bfd_elf32_bfd_print_private_bfd_data _bfd_xgate_elf_print_private_bfd_data
728
729#define xgate_stub_hash_lookup(table, string, create, copy) \
730 ((struct elf32_xgate_stub_hash_entry *) \
731 bfd_hash_lookup ((table), (string), (create), (copy)))
732
733#include "elf32-target.h"
A mirror of the official binutils-gdb repository