1 /* Freescale XGATE-specific support for 32-bit ELF
2 Copyright (C) 2010-2014 Free Software Foundation, Inc.
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. */
33 static reloc_howto_type *
34 bfd_elf32_bfd_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
35 static reloc_howto_type *
36 bfd_elf32_bfd_reloc_name_lookup (bfd *, const char *);
37 static void
38 xgate_info_to_howto_rel (bfd *, arelent *, Elf_Internal_Rela *);
39 static bfd_boolean
40 xgate_elf_set_mach_from_flags (bfd *);
41 static struct bfd_hash_entry *
42 stub_hash_newfunc (struct bfd_hash_entry *, struct bfd_hash_table *,
43 const char *);
44 static struct bfd_link_hash_table*
45 xgate_elf_bfd_link_hash_table_create (bfd *);
46
47 /* Use REL instead of RELA to save space */
48 #define USE_REL 1
49
50 static reloc_howto_type elf_xgate_howto_table[] =
51 {
52 /* This reloc does nothing. */
53 HOWTO (R_XGATE_NONE, /* type */
54 0, /* rightshift */
55 2, /* size (0 = byte, 1 = short, 2 = long) */
56 32, /* bitsize */
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 */
108 0xffff, /* src_mask */
109 0xffff, /* dst_mask */
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
356 struct xgate_reloc_map
357 {
358 bfd_reloc_code_real_type bfd_reloc_val;
359 unsigned char elf_reloc_val;
360 };
361
362 static 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
389 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)390 bfd_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
402 static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)403 bfd_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
417 static void
xgate_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)418 xgate_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);
425 BFD_ASSERT(r_type < (unsigned int) R_XGATE_max);
426 cache_ptr->howto = &elf_xgate_howto_table[r_type];
427 }
428
429 /* Destroy an XGATE ELF linker hash table. */
430
431 static void
xgate_elf_bfd_link_hash_table_free(bfd * obfd)432 xgate_elf_bfd_link_hash_table_free (bfd *obfd)
433 {
434 struct xgate_elf_link_hash_table *ret =
435 (struct xgate_elf_link_hash_table *) obfd->link.hash;
436
437 bfd_hash_table_free (ret->stub_hash_table);
438 free (ret->stub_hash_table);
439 _bfd_elf_link_hash_table_free (obfd);
440 }
441
442 /* Create an XGATE ELF linker hash table. */
443
444 static struct bfd_link_hash_table*
xgate_elf_bfd_link_hash_table_create(bfd * abfd)445 xgate_elf_bfd_link_hash_table_create (bfd *abfd)
446 {
447 struct xgate_elf_link_hash_table *ret;
448 bfd_size_type amt = sizeof(struct xgate_elf_link_hash_table);
449
450 ret = (struct xgate_elf_link_hash_table *) bfd_zmalloc (amt);
451 if (ret == (struct xgate_elf_link_hash_table *) NULL)
452 return NULL;
453
454 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
455 _bfd_elf_link_hash_newfunc, sizeof(struct elf_link_hash_entry),
456 XGATE_ELF_DATA))
457 {
458 free (ret);
459 return NULL;
460 }
461
462 /* Init the stub hash table too. */
463 amt = sizeof(struct bfd_hash_table);
464 ret->stub_hash_table = (struct bfd_hash_table*) bfd_zmalloc (amt);
465 if (ret->stub_hash_table == NULL)
466 {
467 _bfd_elf_link_hash_table_free (abfd);
468 return NULL;
469 }
470
471 if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc,
472 sizeof(struct elf32_xgate_stub_hash_entry)))
473 {
474 free (ret->stub_hash_table);
475 _bfd_elf_link_hash_table_free (abfd);
476 return NULL;
477 }
478 ret->root.root.hash_table_free = xgate_elf_bfd_link_hash_table_free;
479
480 return &ret->root.root;
481 }
482
483 static bfd_boolean
xgate_elf_set_mach_from_flags(bfd * abfd ATTRIBUTE_UNUSED)484 xgate_elf_set_mach_from_flags (bfd *abfd ATTRIBUTE_UNUSED)
485 {
486 return TRUE;
487 }
488
489 /* Specific sections:
490 - The .page0 is a data section that is mapped in [0x0000..0x00FF].
491 Page0 accesses are faster on the M68HC12.
492 - The .vectors is the section that represents the interrupt
493 vectors.
494 - The .xgate section is starts in 0xE08800 or as xgate sees it 0x0800. */
495 static const struct bfd_elf_special_section elf32_xgate_special_sections[] =
496 {
497 { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
498 { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
499 { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
500 { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
501 /*{ STRING_COMMA_LEN (".xgate"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
502 TODO finish this implementation */
503 { NULL, 0, 0, 0, 0 }
504 };
505
506 struct xgate_scan_param
507 {
508 struct xgate_page_info* pinfo;
509 bfd_boolean use_memory_banks;
510 };
511
512 /* Assorted hash table functions. */
513
514 /* Initialize an entry in the stub hash table. */
515
516 static struct bfd_hash_entry *
stub_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table ATTRIBUTE_UNUSED,const char * string ATTRIBUTE_UNUSED)517 stub_hash_newfunc (struct bfd_hash_entry *entry,
518 struct bfd_hash_table *table ATTRIBUTE_UNUSED,
519 const char *string ATTRIBUTE_UNUSED)
520 {
521 return entry;
522 }
523
524 /* Hook called by the linker routine which adds symbols from an object
525 file. */
526
527 bfd_boolean
elf32_xgate_add_symbol_hook(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,Elf_Internal_Sym * sym,const char ** namep ATTRIBUTE_UNUSED,flagword * flagsp ATTRIBUTE_UNUSED,asection ** secp ATTRIBUTE_UNUSED,bfd_vma * valp ATTRIBUTE_UNUSED)528 elf32_xgate_add_symbol_hook (bfd *abfd ATTRIBUTE_UNUSED,
529 struct bfd_link_info *info ATTRIBUTE_UNUSED,
530 Elf_Internal_Sym *sym,
531 const char **namep ATTRIBUTE_UNUSED,
532 flagword *flagsp ATTRIBUTE_UNUSED,
533 asection **secp ATTRIBUTE_UNUSED,
534 bfd_vma *valp ATTRIBUTE_UNUSED)
535 {
536 /* For some reason the st_target_internal value is not retained
537 after xgate_frob_symbol is called, hence this temp hack. */
538 sym->st_target_internal = 1;
539 return TRUE;
540 }
541
542 /* External entry points for sizing and building linker stubs. */
543
544 /* Set up various things so that we can make a list of input sections
545 for each output section included in the link. Returns -1 on error,
546 0 when no stubs will be needed, and 1 on success. */
547
548 int
elf32_xgate_setup_section_lists(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED)549 elf32_xgate_setup_section_lists (bfd *output_bfd ATTRIBUTE_UNUSED,
550 struct bfd_link_info *info ATTRIBUTE_UNUSED)
551 {
552 return 1;
553 }
554
555 /* Determine and set the size of the stub section for a final link.
556 The basic idea here is to examine all the relocations looking for
557 PC-relative calls to a target that is unreachable with any "9-bit PC-REL"
558 instruction. */
559
560 bfd_boolean
elf32_xgate_size_stubs(bfd * output_bfd ATTRIBUTE_UNUSED,bfd * stub_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * (* add_stub_section)(const char *,asection *)ATTRIBUTE_UNUSED)561 elf32_xgate_size_stubs (bfd *output_bfd ATTRIBUTE_UNUSED,
562 bfd *stub_bfd ATTRIBUTE_UNUSED,
563 struct bfd_link_info *info ATTRIBUTE_UNUSED,
564 asection * (*add_stub_section) (const char*, asection*) ATTRIBUTE_UNUSED)
565 {
566 return FALSE;
567 }
568
569 /* Build all the stubs associated with the current output file. The
570 stubs are kept in a hash table attached to the main linker hash
571 table. This function is called via xgateelf_finish in the
572 linker. */
573
574 bfd_boolean
elf32_xgate_build_stubs(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED)575 elf32_xgate_build_stubs (bfd *abfd ATTRIBUTE_UNUSED,
576 struct bfd_link_info *info ATTRIBUTE_UNUSED)
577 {
578 return TRUE;
579 }
580
581 void
xgate_elf_get_bank_parameters(struct bfd_link_info * info ATTRIBUTE_UNUSED)582 xgate_elf_get_bank_parameters (struct bfd_link_info *info ATTRIBUTE_UNUSED)
583 {
584 return;
585 }
586
587 /* This function is used for relocs which are only used for relaxing,
588 which the linker should otherwise ignore. */
589
590 bfd_reloc_status_type
xgate_elf_ignore_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry,asymbol * symbol ATTRIBUTE_UNUSED,void * data ATTRIBUTE_UNUSED,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)591 xgate_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
592 arelent *reloc_entry,
593 asymbol *symbol ATTRIBUTE_UNUSED,
594 void *data ATTRIBUTE_UNUSED,
595 asection *input_section,
596 bfd *output_bfd,
597 char **error_message ATTRIBUTE_UNUSED)
598 {
599 if (output_bfd != NULL)
600 reloc_entry->address += input_section->output_offset;
601 return bfd_reloc_ok;
602 }
603
604 bfd_reloc_status_type
xgate_elf_special_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry ATTRIBUTE_UNUSED,asymbol * symbol ATTRIBUTE_UNUSED,void * data ATTRIBUTE_UNUSED,asection * input_section ATTRIBUTE_UNUSED,bfd * output_bfd ATTRIBUTE_UNUSED,char ** error_message ATTRIBUTE_UNUSED)605 xgate_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED,
606 arelent *reloc_entry ATTRIBUTE_UNUSED,
607 asymbol *symbol ATTRIBUTE_UNUSED,
608 void *data ATTRIBUTE_UNUSED,
609 asection *input_section ATTRIBUTE_UNUSED,
610 bfd *output_bfd ATTRIBUTE_UNUSED,
611 char **error_message ATTRIBUTE_UNUSED)
612 {
613 abort ();
614 }
615
616 /* Look through the relocs for a section during the first phase.
617 Since we don't do .gots or .plts, we just need to consider the
618 virtual table relocs for gc. */
619
620 bfd_boolean
elf32_xgate_check_relocs(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * sec ATTRIBUTE_UNUSED,const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)621 elf32_xgate_check_relocs (bfd *abfd ATTRIBUTE_UNUSED,
622 struct bfd_link_info *info ATTRIBUTE_UNUSED,
623 asection *sec ATTRIBUTE_UNUSED,
624 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
625 {
626 return TRUE;
627 }
628
629 /* Relocate a XGATE/S12x ELF section. */
630
631 bfd_boolean
elf32_xgate_relocate_section(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,bfd * input_bfd ATTRIBUTE_UNUSED,asection * input_section ATTRIBUTE_UNUSED,bfd_byte * contents ATTRIBUTE_UNUSED,Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED,Elf_Internal_Sym * local_syms ATTRIBUTE_UNUSED,asection ** local_sections ATTRIBUTE_UNUSED)632 elf32_xgate_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
633 struct bfd_link_info *info ATTRIBUTE_UNUSED,
634 bfd *input_bfd ATTRIBUTE_UNUSED,
635 asection *input_section ATTRIBUTE_UNUSED,
636 bfd_byte *contents ATTRIBUTE_UNUSED,
637 Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED,
638 Elf_Internal_Sym *local_syms ATTRIBUTE_UNUSED,
639 asection **local_sections ATTRIBUTE_UNUSED)
640 {
641 return TRUE;
642 }
643
644 /* Set and control ELF flags in ELF header. */
645
646 bfd_boolean
_bfd_xgate_elf_set_private_flags(bfd * abfd ATTRIBUTE_UNUSED,flagword flags ATTRIBUTE_UNUSED)647 _bfd_xgate_elf_set_private_flags (bfd *abfd ATTRIBUTE_UNUSED,
648 flagword flags ATTRIBUTE_UNUSED)
649 {
650 return TRUE;
651 }
652
653 /* Merge backend specific data from an object file to the output
654 object file when linking. */
655
656 bfd_boolean
_bfd_xgate_elf_merge_private_bfd_data(bfd * ibfd ATTRIBUTE_UNUSED,bfd * obfd ATTRIBUTE_UNUSED)657 _bfd_xgate_elf_merge_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED,
658 bfd *obfd ATTRIBUTE_UNUSED)
659 {
660 return TRUE;
661 }
662
663 bfd_boolean
_bfd_xgate_elf_print_private_bfd_data(bfd * abfd,void * ptr)664 _bfd_xgate_elf_print_private_bfd_data (bfd *abfd, void *ptr)
665 {
666 FILE *file = (FILE *) ptr;
667
668 BFD_ASSERT (abfd != NULL && ptr != NULL);
669
670 /* Print normal ELF private data. */
671 _bfd_elf_print_private_bfd_data (abfd, ptr);
672
673 /* xgettext:c-format */
674 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
675
676 if (elf_elfheader (abfd)->e_flags & E_XGATE_I32)
677 fprintf (file, _("[abi=32-bit int, "));
678 else
679 fprintf (file, _("[abi=16-bit int, "));
680
681 if (elf_elfheader (abfd)->e_flags & E_XGATE_F64)
682 fprintf (file, _("64-bit double, "));
683 else
684 fprintf (file, _("32-bit double, "));
685 if (elf_elfheader (abfd)->e_flags & EF_XGATE_MACH)
686 fprintf (file, _("cpu=XGATE]"));
687 else
688 fprintf (file, _("error reading cpu type from elf private data"));
689 fputc ('\n', file);
690
691 return TRUE;
692 }
693
694 void
elf32_xgate_post_process_headers(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * link_info ATTRIBUTE_UNUSED)695 elf32_xgate_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
696 {
697
698 }
699
700 #define ELF_ARCH bfd_arch_xgate
701 #define ELF_MACHINE_CODE EM_XGATE
702 #define ELF_TARGET_ID XGATE_ELF_DATA
703
704 #define ELF_MAXPAGESIZE 0x1000
705
706 #define TARGET_BIG_SYM xgate_elf32_vec
707 #define TARGET_BIG_NAME "elf32-xgate"
708
709 #define elf_info_to_howto 0
710 #define elf_info_to_howto_rel xgate_info_to_howto_rel
711 #define elf_backend_check_relocs elf32_xgate_check_relocs
712 #define elf_backend_relocate_section elf32_xgate_relocate_section
713 #define elf_backend_object_p xgate_elf_set_mach_from_flags
714 #define elf_backend_final_write_processing 0
715 #define elf_backend_can_gc_sections 1
716 #define elf_backend_special_sections elf32_xgate_special_sections
717 #define elf_backend_post_process_headers elf32_xgate_post_process_headers
718 #define elf_backend_add_symbol_hook elf32_xgate_add_symbol_hook
719
720 #define bfd_elf32_bfd_link_hash_table_create xgate_elf_bfd_link_hash_table_create
721 #define bfd_elf32_bfd_merge_private_bfd_data _bfd_xgate_elf_merge_private_bfd_data
722 #define bfd_elf32_bfd_set_private_flags _bfd_xgate_elf_set_private_flags
723 #define bfd_elf32_bfd_print_private_bfd_data _bfd_xgate_elf_print_private_bfd_data
724
725 #define xgate_stub_hash_lookup(table, string, create, copy) \
726 ((struct elf32_xgate_stub_hash_entry *) \
727 bfd_hash_lookup ((table), (string), (create), (copy)))
728
729 #include "elf32-target.h"
730