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[binutils.git] / bfd / elf32-m68hc11.c
blobd61590ff4861db200992a4f5f2081235ae2ba093
1 /* Motorola 68HC11-specific support for 32-bit ELF
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Contributed by Stephane Carrez (stcarrez@nerim.fr)
5 (Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22
23 #include "bfd.h"
24 #include "sysdep.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf32-m68hc1x.h"
29 #include "elf/m68hc11.h"
30 #include "opcode/m68hc11.h"
31
32 /* Relocation functions. */
33 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
34 (bfd *, bfd_reloc_code_real_type);
35 static void m68hc11_info_to_howto_rel
36 (bfd *, arelent *, Elf_Internal_Rela *);
37
38 /* Trampoline generation. */
39 static bfd_boolean m68hc11_elf_size_one_stub
40 (struct bfd_hash_entry *gen_entry, void *in_arg);
41 static bfd_boolean m68hc11_elf_build_one_stub
42 (struct bfd_hash_entry *gen_entry, void *in_arg);
43 static struct bfd_link_hash_table* m68hc11_elf_bfd_link_hash_table_create
44 (bfd* abfd);
45
46 /* Linker relaxation. */
47 static bfd_boolean m68hc11_elf_relax_section
48 (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
49 static void m68hc11_elf_relax_delete_bytes
50 (bfd *, asection *, bfd_vma, int);
51 static void m68hc11_relax_group
52 (bfd *, asection *, bfd_byte *, unsigned, unsigned long, unsigned long);
53 static int compare_reloc (const void *, const void *);
54
55 /* Use REL instead of RELA to save space */
56 #define USE_REL 1
57
58 /* The Motorola 68HC11 microcontroller only addresses 64Kb but we also
59 support a memory bank switching mechanism similar to 68HC12.
60 We must handle 8 and 16-bit relocations. The 32-bit relocation
61 are used for debugging sections (DWARF2) to represent a virtual
62 address.
63 The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */
64 static reloc_howto_type elf_m68hc11_howto_table[] = {
65 /* This reloc does nothing. */
66 HOWTO (R_M68HC11_NONE, /* type */
67 0, /* rightshift */
68 2, /* size (0 = byte, 1 = short, 2 = long) */
69 32, /* bitsize */
70 FALSE, /* pc_relative */
71 0, /* bitpos */
72 complain_overflow_dont,/* complain_on_overflow */
73 bfd_elf_generic_reloc, /* special_function */
74 "R_M68HC11_NONE", /* name */
75 FALSE, /* partial_inplace */
76 0, /* src_mask */
77 0, /* dst_mask */
78 FALSE), /* pcrel_offset */
79
80 /* A 8 bit absolute relocation */
81 HOWTO (R_M68HC11_8, /* type */
82 0, /* rightshift */
83 0, /* size (0 = byte, 1 = short, 2 = long) */
84 8, /* bitsize */
85 FALSE, /* pc_relative */
86 0, /* bitpos */
87 complain_overflow_bitfield, /* complain_on_overflow */
88 bfd_elf_generic_reloc, /* special_function */
89 "R_M68HC11_8", /* name */
90 FALSE, /* partial_inplace */
91 0x00ff, /* src_mask */
92 0x00ff, /* dst_mask */
93 FALSE), /* pcrel_offset */
94
95 /* A 8 bit absolute relocation (upper address) */
96 HOWTO (R_M68HC11_HI8, /* type */
97 8, /* rightshift */
98 0, /* size (0 = byte, 1 = short, 2 = long) */
99 8, /* bitsize */
100 FALSE, /* pc_relative */
101 0, /* bitpos */
102 complain_overflow_bitfield, /* complain_on_overflow */
103 bfd_elf_generic_reloc, /* special_function */
104 "R_M68HC11_HI8", /* name */
105 FALSE, /* partial_inplace */
106 0x00ff, /* src_mask */
107 0x00ff, /* dst_mask */
108 FALSE), /* pcrel_offset */
109
110 /* A 8 bit absolute relocation (upper address) */
111 HOWTO (R_M68HC11_LO8, /* type */
112 0, /* rightshift */
113 0, /* size (0 = byte, 1 = short, 2 = long) */
114 8, /* bitsize */
115 FALSE, /* pc_relative */
116 0, /* bitpos */
117 complain_overflow_dont, /* complain_on_overflow */
118 bfd_elf_generic_reloc, /* special_function */
119 "R_M68HC11_LO8", /* name */
120 FALSE, /* partial_inplace */
121 0x00ff, /* src_mask */
122 0x00ff, /* dst_mask */
123 FALSE), /* pcrel_offset */
124
125 /* A 8 bit PC-rel relocation */
126 HOWTO (R_M68HC11_PCREL_8, /* type */
127 0, /* rightshift */
128 0, /* size (0 = byte, 1 = short, 2 = long) */
129 8, /* bitsize */
130 TRUE, /* pc_relative */
131 0, /* bitpos */
132 complain_overflow_bitfield, /* complain_on_overflow */
133 bfd_elf_generic_reloc, /* special_function */
134 "R_M68HC11_PCREL_8", /* name */
135 FALSE, /* partial_inplace */
136 0x00ff, /* src_mask */
137 0x00ff, /* dst_mask */
138 TRUE), /* pcrel_offset */
139
140 /* A 16 bit absolute relocation */
141 HOWTO (R_M68HC11_16, /* type */
142 0, /* rightshift */
143 1, /* size (0 = byte, 1 = short, 2 = long) */
144 16, /* bitsize */
145 FALSE, /* pc_relative */
146 0, /* bitpos */
147 complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
148 bfd_elf_generic_reloc, /* special_function */
149 "R_M68HC11_16", /* name */
150 FALSE, /* partial_inplace */
151 0xffff, /* src_mask */
152 0xffff, /* dst_mask */
153 FALSE), /* pcrel_offset */
154
155 /* A 32 bit absolute relocation. This one is never used for the
156 code relocation. It's used by gas for -gstabs generation. */
157 HOWTO (R_M68HC11_32, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 32, /* bitsize */
161 FALSE, /* pc_relative */
162 0, /* bitpos */
163 complain_overflow_bitfield, /* complain_on_overflow */
164 bfd_elf_generic_reloc, /* special_function */
165 "R_M68HC11_32", /* name */
166 FALSE, /* partial_inplace */
167 0xffffffff, /* src_mask */
168 0xffffffff, /* dst_mask */
169 FALSE), /* pcrel_offset */
170
171 /* A 3 bit absolute relocation */
172 HOWTO (R_M68HC11_3B, /* type */
173 0, /* rightshift */
174 0, /* size (0 = byte, 1 = short, 2 = long) */
175 3, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_bitfield, /* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_M68HC11_4B", /* name */
181 FALSE, /* partial_inplace */
182 0x003, /* src_mask */
183 0x003, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 /* A 16 bit PC-rel relocation */
187 HOWTO (R_M68HC11_PCREL_16, /* type */
188 0, /* rightshift */
189 1, /* size (0 = byte, 1 = short, 2 = long) */
190 16, /* bitsize */
191 TRUE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_M68HC11_PCREL_16", /* name */
196 FALSE, /* partial_inplace */
197 0xffff, /* src_mask */
198 0xffff, /* dst_mask */
199 TRUE), /* pcrel_offset */
200
201 /* GNU extension to record C++ vtable hierarchy */
202 HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
203 0, /* rightshift */
204 1, /* size (0 = byte, 1 = short, 2 = long) */
205 0, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 NULL, /* special_function */
210 "R_M68HC11_GNU_VTINHERIT", /* name */
211 FALSE, /* partial_inplace */
212 0, /* src_mask */
213 0, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* GNU extension to record C++ vtable member usage */
217 HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
218 0, /* rightshift */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
220 0, /* bitsize */
221 FALSE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_dont, /* complain_on_overflow */
224 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
225 "R_M68HC11_GNU_VTENTRY", /* name */
226 FALSE, /* partial_inplace */
227 0, /* src_mask */
228 0, /* dst_mask */
229 FALSE), /* pcrel_offset */
230
231 /* A 24 bit relocation */
232 HOWTO (R_M68HC11_24, /* type */
233 0, /* rightshift */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
235 24, /* bitsize */
236 FALSE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_M68HC11_24", /* name */
241 FALSE, /* partial_inplace */
242 0xffffff, /* src_mask */
243 0xffffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
245
246 /* A 16-bit low relocation */
247 HOWTO (R_M68HC11_LO16, /* type */
248 0, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_M68HC11_LO16", /* name */
256 FALSE, /* partial_inplace */
257 0xffff, /* src_mask */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 /* A page relocation */
262 HOWTO (R_M68HC11_PAGE, /* type */
263 0, /* rightshift */
264 0, /* size (0 = byte, 1 = short, 2 = long) */
265 8, /* bitsize */
266 FALSE, /* pc_relative */
267 0, /* bitpos */
268 complain_overflow_bitfield, /* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_M68HC11_PAGE", /* name */
271 FALSE, /* partial_inplace */
272 0x00ff, /* src_mask */
273 0x00ff, /* dst_mask */
274 FALSE), /* pcrel_offset */
275
276 EMPTY_HOWTO (14),
277 EMPTY_HOWTO (15),
278 EMPTY_HOWTO (16),
279 EMPTY_HOWTO (17),
280 EMPTY_HOWTO (18),
281 EMPTY_HOWTO (19),
282
283 /* Mark beginning of a jump instruction (any form). */
284 HOWTO (R_M68HC11_RL_JUMP, /* type */
285 0, /* rightshift */
286 1, /* size (0 = byte, 1 = short, 2 = long) */
287 0, /* bitsize */
288 FALSE, /* pc_relative */
289 0, /* bitpos */
290 complain_overflow_dont, /* complain_on_overflow */
291 m68hc11_elf_ignore_reloc, /* special_function */
292 "R_M68HC11_RL_JUMP", /* name */
293 TRUE, /* partial_inplace */
294 0, /* src_mask */
295 0, /* dst_mask */
296 TRUE), /* pcrel_offset */
297
298 /* Mark beginning of Gcc relaxation group instruction. */
299 HOWTO (R_M68HC11_RL_GROUP, /* type */
300 0, /* rightshift */
301 1, /* size (0 = byte, 1 = short, 2 = long) */
302 0, /* bitsize */
303 FALSE, /* pc_relative */
304 0, /* bitpos */
305 complain_overflow_dont, /* complain_on_overflow */
306 m68hc11_elf_ignore_reloc, /* special_function */
307 "R_M68HC11_RL_GROUP", /* name */
308 TRUE, /* partial_inplace */
309 0, /* src_mask */
310 0, /* dst_mask */
311 TRUE), /* pcrel_offset */
312 };
313
314 /* Map BFD reloc types to M68HC11 ELF reloc types. */
315
316 struct m68hc11_reloc_map
317 {
318 bfd_reloc_code_real_type bfd_reloc_val;
319 unsigned char elf_reloc_val;
320 };
321
322 static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
323 {BFD_RELOC_NONE, R_M68HC11_NONE,},
324 {BFD_RELOC_8, R_M68HC11_8},
325 {BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
326 {BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
327 {BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
328 {BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
329 {BFD_RELOC_16, R_M68HC11_16},
330 {BFD_RELOC_32, R_M68HC11_32},
331 {BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
332
333 {BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
334 {BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
335
336 {BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
337 {BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
338 {BFD_RELOC_M68HC11_24, R_M68HC11_24},
339
340 {BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
341 {BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
342 };
343
344 static reloc_howto_type *
345 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
346 bfd_reloc_code_real_type code)
347 {
348 unsigned int i;
349
350 for (i = 0;
351 i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
352 i++)
353 {
354 if (m68hc11_reloc_map[i].bfd_reloc_val == code)
355 return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
356 }
357
358 return NULL;
359 }
360
361 /* Set the howto pointer for an M68HC11 ELF reloc. */
362
363 static void
364 m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
365 arelent *cache_ptr, Elf_Internal_Rela *dst)
366 {
367 unsigned int r_type;
368
369 r_type = ELF32_R_TYPE (dst->r_info);
370 BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
371 cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
372 }
373
374 \f
375 /* Far trampoline generation. */
376
377 /* Build a 68HC11 trampoline stub. */
378 static bfd_boolean
379 m68hc11_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
380 {
381 struct elf32_m68hc11_stub_hash_entry *stub_entry;
382 struct bfd_link_info *info;
383 struct m68hc11_elf_link_hash_table *htab;
384 asection *stub_sec;
385 bfd *stub_bfd;
386 bfd_byte *loc;
387 bfd_vma sym_value, phys_page, phys_addr;
388
389 /* Massage our args to the form they really have. */
390 stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
391 info = (struct bfd_link_info *) in_arg;
392
393 htab = m68hc11_elf_hash_table (info);
394
395 stub_sec = stub_entry->stub_sec;
396
397 /* Make a note of the offset within the stubs for this entry. */
398 stub_entry->stub_offset = stub_sec->size;
399 stub_sec->size += 10;
400 loc = stub_sec->contents + stub_entry->stub_offset;
401
402 stub_bfd = stub_sec->owner;
403
404 /* Create the trampoline call stub:
405
406 pshb
407 ldab #%page(symbol)
408 ldy #%addr(symbol)
409 jmp __trampoline
410
411 */
412 sym_value = (stub_entry->target_value
413 + stub_entry->target_section->output_offset
414 + stub_entry->target_section->output_section->vma);
415 phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
416 phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
417
418 /* pshb; ldab #%page(sym) */
419 bfd_put_8 (stub_bfd, 0x37, loc);
420 bfd_put_8 (stub_bfd, 0xC6, loc + 1);
421 bfd_put_8 (stub_bfd, phys_page, loc + 2);
422 loc += 3;
423
424 /* ldy #%addr(sym) */
425 bfd_put_8 (stub_bfd, 0x18, loc);
426 bfd_put_8 (stub_bfd, 0xCE, loc + 1);
427 bfd_put_16 (stub_bfd, phys_addr, loc + 2);
428 loc += 4;
429
430 /* jmp __trampoline */
431 bfd_put_8 (stub_bfd, 0x7E, loc);
432 bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
433
434 return TRUE;
435 }
436
437 /* As above, but don't actually build the stub. Just bump offset so
438 we know stub section sizes. */
439
440 static bfd_boolean
441 m68hc11_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
442 void *in_arg ATTRIBUTE_UNUSED)
443 {
444 struct elf32_m68hc11_stub_hash_entry *stub_entry;
445
446 /* Massage our args to the form they really have. */
447 stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
448
449 stub_entry->stub_sec->size += 10;
450 return TRUE;
451 }
452
453 /* Create a 68HC11 ELF linker hash table. */
454
455 static struct bfd_link_hash_table *
456 m68hc11_elf_bfd_link_hash_table_create (bfd *abfd)
457 {
458 struct m68hc11_elf_link_hash_table *ret;
459
460 ret = m68hc11_elf_hash_table_create (abfd);
461 if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
462 return NULL;
463
464 ret->size_one_stub = m68hc11_elf_size_one_stub;
465 ret->build_one_stub = m68hc11_elf_build_one_stub;
466
467 return &ret->root.root;
468 }
469
470 \f
471 /* 68HC11 Linker Relaxation. */
472
473 struct m68hc11_direct_relax
474 {
475 const char *name;
476 unsigned char code;
477 unsigned char direct_code;
478 } m68hc11_direct_relax_table[] = {
479 { "adca", 0xB9, 0x99 },
480 { "adcb", 0xF9, 0xD9 },
481 { "adda", 0xBB, 0x9B },
482 { "addb", 0xFB, 0xDB },
483 { "addd", 0xF3, 0xD3 },
484 { "anda", 0xB4, 0x94 },
485 { "andb", 0xF4, 0xD4 },
486 { "cmpa", 0xB1, 0x91 },
487 { "cmpb", 0xF1, 0xD1 },
488 { "cpd", 0xB3, 0x93 },
489 { "cpxy", 0xBC, 0x9C },
490 /* { "cpy", 0xBC, 0x9C }, */
491 { "eora", 0xB8, 0x98 },
492 { "eorb", 0xF8, 0xD8 },
493 { "jsr", 0xBD, 0x9D },
494 { "ldaa", 0xB6, 0x96 },
495 { "ldab", 0xF6, 0xD6 },
496 { "ldd", 0xFC, 0xDC },
497 { "lds", 0xBE, 0x9E },
498 { "ldxy", 0xFE, 0xDE },
499 /* { "ldy", 0xFE, 0xDE },*/
500 { "oraa", 0xBA, 0x9A },
501 { "orab", 0xFA, 0xDA },
502 { "sbca", 0xB2, 0x92 },
503 { "sbcb", 0xF2, 0xD2 },
504 { "staa", 0xB7, 0x97 },
505 { "stab", 0xF7, 0xD7 },
506 { "std", 0xFD, 0xDD },
507 { "sts", 0xBF, 0x9F },
508 { "stxy", 0xFF, 0xDF },
509 /* { "sty", 0xFF, 0xDF },*/
510 { "suba", 0xB0, 0x90 },
511 { "subb", 0xF0, 0xD0 },
512 { "subd", 0xB3, 0x93 },
513 { 0, 0, 0 }
514 };
515
516 static struct m68hc11_direct_relax *
517 find_relaxable_insn (unsigned char code)
518 {
519 int i;
520
521 for (i = 0; m68hc11_direct_relax_table[i].name; i++)
522 if (m68hc11_direct_relax_table[i].code == code)
523 return &m68hc11_direct_relax_table[i];
524
525 return 0;
526 }
527
528 static int
529 compare_reloc (const void *e1, const void *e2)
530 {
531 const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
532 const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
533
534 if (i1->r_offset == i2->r_offset)
535 return 0;
536 else
537 return i1->r_offset < i2->r_offset ? -1 : 1;
538 }
539
540 #define M6811_OP_LDX_IMMEDIATE (0xCE)
541
542 static void
543 m68hc11_relax_group (bfd *abfd, asection *sec, bfd_byte *contents,
544 unsigned value, unsigned long offset,
545 unsigned long end_group)
546 {
547 unsigned char code;
548 unsigned long start_offset;
549 unsigned long ldx_offset = offset;
550 unsigned long ldx_size;
551 int can_delete_ldx;
552 int relax_ldy = 0;
553
554 /* First instruction of the relax group must be a
555 LDX #value or LDY #value. If this is not the case,
556 ignore the relax group. */
557 code = bfd_get_8 (abfd, contents + offset);
558 if (code == 0x18)
559 {
560 relax_ldy++;
561 offset++;
562 code = bfd_get_8 (abfd, contents + offset);
563 }
564 ldx_size = offset - ldx_offset + 3;
565 offset += 3;
566 if (code != M6811_OP_LDX_IMMEDIATE || offset >= end_group)
567 return;
568
569
570 /* We can remove the LDX/LDY only when all bset/brclr instructions
571 of the relax group have been converted to use direct addressing
572 mode. */
573 can_delete_ldx = 1;
574 while (offset < end_group)
575 {
576 unsigned isize;
577 unsigned new_value;
578 int bset_use_y;
579
580 bset_use_y = 0;
581 start_offset = offset;
582 code = bfd_get_8 (abfd, contents + offset);
583 if (code == 0x18)
584 {
585 bset_use_y++;
586 offset++;
587 code = bfd_get_8 (abfd, contents + offset);
588 }
589
590 /* Check the instruction and translate to use direct addressing mode. */
591 switch (code)
592 {
593 /* bset */
594 case 0x1C:
595 code = 0x14;
596 isize = 3;
597 break;
598
599 /* brclr */
600 case 0x1F:
601 code = 0x13;
602 isize = 4;
603 break;
604
605 /* brset */
606 case 0x1E:
607 code = 0x12;
608 isize = 4;
609 break;
610
611 /* bclr */
612 case 0x1D:
613 code = 0x15;
614 isize = 3;
615 break;
616
617 /* This instruction is not recognized and we are not
618 at end of the relax group. Ignore and don't remove
619 the first LDX (we don't know what it is used for...). */
620 default:
621 return;
622 }
623 new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1);
624 new_value += value;
625 if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy)
626 {
627 bfd_put_8 (abfd, code, contents + offset);
628 bfd_put_8 (abfd, new_value, contents + offset + 1);
629 if (start_offset != offset)
630 {
631 m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
632 offset - start_offset);
633 end_group--;
634 }
635 }
636 else
637 {
638 can_delete_ldx = 0;
639 }
640 offset = start_offset + isize;
641 }
642 if (can_delete_ldx)
643 {
644 /* Remove the move instruction (3 or 4 bytes win). */
645 m68hc11_elf_relax_delete_bytes (abfd, sec, ldx_offset, ldx_size);
646 }
647 }
648
649 /* This function handles relaxing for the 68HC11.
650
651
652 and somewhat more difficult to support. */
653
654 static bfd_boolean
655 m68hc11_elf_relax_section (bfd *abfd, asection *sec,
656 struct bfd_link_info *link_info, bfd_boolean *again)
657 {
658 Elf_Internal_Shdr *symtab_hdr;
659 Elf_Internal_Shdr *shndx_hdr;
660 Elf_Internal_Rela *internal_relocs;
661 Elf_Internal_Rela *free_relocs = NULL;
662 Elf_Internal_Rela *irel, *irelend;
663 bfd_byte *contents = NULL;
664 bfd_byte *free_contents = NULL;
665 Elf32_External_Sym *free_extsyms = NULL;
666 Elf_Internal_Rela *prev_insn_branch = NULL;
667 Elf_Internal_Rela *prev_insn_group = NULL;
668 unsigned insn_group_value = 0;
669 Elf_Internal_Sym *isymbuf = NULL;
670
671 /* Assume nothing changes. */
672 *again = FALSE;
673
674 /* We don't have to do anything for a relocatable link, if
675 this section does not have relocs, or if this is not a
676 code section. */
677 if (link_info->relocatable
678 || (sec->flags & SEC_RELOC) == 0
679 || sec->reloc_count == 0
680 || (sec->flags & SEC_CODE) == 0)
681 return TRUE;
682
683 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
684 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
685
686 /* Get a copy of the native relocations. */
687 internal_relocs = (_bfd_elf_link_read_relocs
688 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
689 link_info->keep_memory));
690 if (internal_relocs == NULL)
691 goto error_return;
692 if (! link_info->keep_memory)
693 free_relocs = internal_relocs;
694
695 /* Checking for branch relaxation relies on the relocations to
696 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
697 qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
698 compare_reloc);
699
700 /* Walk through them looking for relaxing opportunities. */
701 irelend = internal_relocs + sec->reloc_count;
702 for (irel = internal_relocs; irel < irelend; irel++)
703 {
704 bfd_vma symval;
705 bfd_vma value;
706 Elf_Internal_Sym *isym;
707 asection *sym_sec;
708 int is_far = 0;
709
710 /* If this isn't something that can be relaxed, then ignore
711 this reloc. */
712 if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16
713 && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
714 && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
715 {
716 prev_insn_branch = 0;
717 prev_insn_group = 0;
718 continue;
719 }
720
721 /* Get the section contents if we haven't done so already. */
722 if (contents == NULL)
723 {
724 /* Get cached copy if it exists. */
725 if (elf_section_data (sec)->this_hdr.contents != NULL)
726 contents = elf_section_data (sec)->this_hdr.contents;
727 else
728 {
729 /* Go get them off disk. */
730 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
731 goto error_return;
732 }
733 }
734
735 /* Try to eliminate an unconditional 8 bit pc-relative branch
736 which immediately follows a conditional 8 bit pc-relative
737 branch around the unconditional branch.
738
739 original: new:
740 bCC lab1 bCC' lab2
741 bra lab2
742 lab1: lab1:
743
744 This happens when the bCC can't reach lab2 at assembly time,
745 but due to other relaxations it can reach at link time. */
746 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_JUMP)
747 {
748 Elf_Internal_Rela *nrel;
749 unsigned char code;
750 unsigned char roffset;
751
752 prev_insn_branch = 0;
753 prev_insn_group = 0;
754
755 /* Do nothing if this reloc is the last byte in the section. */
756 if (irel->r_offset + 2 >= sec->size)
757 continue;
758
759 /* See if the next instruction is an unconditional pc-relative
760 branch, more often than not this test will fail, so we
761 test it first to speed things up. */
762 code = bfd_get_8 (abfd, contents + irel->r_offset + 2);
763 if (code != 0x7e)
764 continue;
765
766 /* Also make sure the next relocation applies to the next
767 instruction and that it's a pc-relative 8 bit branch. */
768 nrel = irel + 1;
769 if (nrel == irelend
770 || irel->r_offset + 3 != nrel->r_offset
771 || ELF32_R_TYPE (nrel->r_info) != (int) R_M68HC11_16)
772 continue;
773
774 /* Make sure our destination immediately follows the
775 unconditional branch. */
776 roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
777 if (roffset != 3)
778 continue;
779
780 prev_insn_branch = irel;
781 prev_insn_group = 0;
782 continue;
783 }
784
785 /* Read this BFD's symbols if we haven't done so already. */
786 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
787 {
788 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
789 if (isymbuf == NULL)
790 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
791 symtab_hdr->sh_info, 0,
792 NULL, NULL, NULL);
793 if (isymbuf == NULL)
794 goto error_return;
795 }
796
797 /* Get the value of the symbol referred to by the reloc. */
798 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
799 {
800 /* A local symbol. */
801 isym = isymbuf + ELF32_R_SYM (irel->r_info);
802 is_far = isym->st_other & STO_M68HC12_FAR;
803 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
804 symval = (isym->st_value
805 + sym_sec->output_section->vma
806 + sym_sec->output_offset);
807 }
808 else
809 {
810 unsigned long indx;
811 struct elf_link_hash_entry *h;
812
813 /* An external symbol. */
814 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
815 h = elf_sym_hashes (abfd)[indx];
816 BFD_ASSERT (h != NULL);
817 if (h->root.type != bfd_link_hash_defined
818 && h->root.type != bfd_link_hash_defweak)
819 {
820 /* This appears to be a reference to an undefined
821 symbol. Just ignore it--it will be caught by the
822 regular reloc processing. */
823 prev_insn_branch = 0;
824 prev_insn_group = 0;
825 continue;
826 }
827
828 is_far = h->other & STO_M68HC12_FAR;
829 isym = 0;
830 sym_sec = h->root.u.def.section;
831 symval = (h->root.u.def.value
832 + sym_sec->output_section->vma
833 + sym_sec->output_offset);
834 }
835
836 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP)
837 {
838 prev_insn_branch = 0;
839 prev_insn_group = 0;
840
841 /* Do nothing if this reloc is the last byte in the section. */
842 if (irel->r_offset == sec->size)
843 continue;
844
845 prev_insn_group = irel;
846 insn_group_value = isym->st_value;
847 continue;
848 }
849
850 /* When we relax some bytes, the size of our section changes.
851 This affects the layout of next input sections that go in our
852 output section. When the symbol is part of another section that
853 will go in the same output section as the current one, it's
854 final address may now be incorrect (too far). We must let the
855 linker re-compute all section offsets before processing this
856 reloc. Code example:
857
858 Initial Final
859 .sect .text section size = 6 section size = 4
860 jmp foo
861 jmp bar
862 .sect .text.foo_bar output_offset = 6 output_offset = 4
863 foo: rts
864 bar: rts
865
866 If we process the reloc now, the jmp bar is replaced by a
867 relative branch to the initial bar address (output_offset 6). */
868 if (*again && sym_sec != sec
869 && sym_sec->output_section == sec->output_section)
870 {
871 prev_insn_group = 0;
872 prev_insn_branch = 0;
873 continue;
874 }
875
876 value = symval;
877 /* Try to turn a far branch to a near branch. */
878 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
879 && prev_insn_branch)
880 {
881 bfd_vma offset;
882 unsigned char code;
883
884 offset = value - (prev_insn_branch->r_offset
885 + sec->output_section->vma
886 + sec->output_offset + 2);
887
888 /* If the offset is still out of -128..+127 range,
889 leave that far branch unchanged. */
890 if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
891 {
892 prev_insn_branch = 0;
893 continue;
894 }
895
896 /* Shrink the branch. */
897 code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
898 if (code == 0x7e)
899 {
900 code = 0x20;
901 bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
902 bfd_put_8 (abfd, 0xff,
903 contents + prev_insn_branch->r_offset + 1);
904 irel->r_offset = prev_insn_branch->r_offset + 1;
905 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
906 R_M68HC11_PCREL_8);
907 m68hc11_elf_relax_delete_bytes (abfd, sec,
908 irel->r_offset + 1, 1);
909 }
910 else
911 {
912 code ^= 0x1;
913 bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
914 bfd_put_8 (abfd, 0xff,
915 contents + prev_insn_branch->r_offset + 1);
916 irel->r_offset = prev_insn_branch->r_offset + 1;
917 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
918 R_M68HC11_PCREL_8);
919 m68hc11_elf_relax_delete_bytes (abfd, sec,
920 irel->r_offset + 1, 3);
921 }
922 prev_insn_branch = 0;
923 *again = TRUE;
924 }
925
926 /* Try to turn a 16 bit address into a 8 bit page0 address. */
927 else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
928 && (value & 0xff00) == 0)
929 {
930 unsigned char code;
931 unsigned short offset;
932 struct m68hc11_direct_relax *rinfo;
933
934 prev_insn_branch = 0;
935 offset = bfd_get_16 (abfd, contents + irel->r_offset);
936 offset += value;
937 if ((offset & 0xff00) != 0)
938 {
939 prev_insn_group = 0;
940 continue;
941 }
942
943 if (prev_insn_group)
944 {
945 unsigned long old_sec_size = sec->size;
946
947 /* Note that we've changed the relocation contents, etc. */
948 elf_section_data (sec)->relocs = internal_relocs;
949 free_relocs = NULL;
950
951 elf_section_data (sec)->this_hdr.contents = contents;
952 free_contents = NULL;
953
954 symtab_hdr->contents = (bfd_byte *) isymbuf;
955 free_extsyms = NULL;
956
957 m68hc11_relax_group (abfd, sec, contents, offset,
958 prev_insn_group->r_offset,
959 insn_group_value);
960 irel = prev_insn_group;
961 prev_insn_group = 0;
962 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
963 R_M68HC11_NONE);
964 if (sec->size != old_sec_size)
965 *again = TRUE;
966 continue;
967 }
968
969 /* Get the opcode. */
970 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
971 rinfo = find_relaxable_insn (code);
972 if (rinfo == 0)
973 {
974 prev_insn_group = 0;
975 continue;
976 }
977
978 /* Note that we've changed the relocation contents, etc. */
979 elf_section_data (sec)->relocs = internal_relocs;
980 free_relocs = NULL;
981
982 elf_section_data (sec)->this_hdr.contents = contents;
983 free_contents = NULL;
984
985 symtab_hdr->contents = (bfd_byte *) isymbuf;
986 free_extsyms = NULL;
987
988 /* Fix the opcode. */
989 /* printf ("A relaxable case : 0x%02x (%s)\n",
990 code, rinfo->name); */
991 bfd_put_8 (abfd, rinfo->direct_code,
992 contents + irel->r_offset - 1);
993
994 /* Delete one byte of data (upper byte of address). */
995 m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
996
997 /* Fix the relocation's type. */
998 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
999 R_M68HC11_8);
1000
1001 /* That will change things, so, we should relax again. */
1002 *again = TRUE;
1003 }
1004 else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16 && !is_far)
1005 {
1006 unsigned char code;
1007 bfd_vma offset;
1008
1009 prev_insn_branch = 0;
1010 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1011 if (code == 0x7e || code == 0xbd)
1012 {
1013 offset = value - (irel->r_offset
1014 + sec->output_section->vma
1015 + sec->output_offset + 1);
1016 offset += bfd_get_16 (abfd, contents + irel->r_offset);
1017
1018 /* If the offset is still out of -128..+127 range,
1019 leave that far branch unchanged. */
1020 if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
1021 {
1022
1023 /* Note that we've changed the relocation contents, etc. */
1024 elf_section_data (sec)->relocs = internal_relocs;
1025 free_relocs = NULL;
1026
1027 elf_section_data (sec)->this_hdr.contents = contents;
1028 free_contents = NULL;
1029
1030 symtab_hdr->contents = (bfd_byte *) isymbuf;
1031 free_extsyms = NULL;
1032
1033 /* Shrink the branch. */
1034 code = (code == 0x7e) ? 0x20 : 0x8d;
1035 bfd_put_8 (abfd, code,
1036 contents + irel->r_offset - 1);
1037 bfd_put_8 (abfd, 0xff,
1038 contents + irel->r_offset);
1039 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1040 R_M68HC11_PCREL_8);
1041 m68hc11_elf_relax_delete_bytes (abfd, sec,
1042 irel->r_offset + 1, 1);
1043 /* That will change things, so, we should relax again. */
1044 *again = TRUE;
1045 }
1046 }
1047 }
1048 prev_insn_branch = 0;
1049 prev_insn_group = 0;
1050 }
1051
1052 if (free_relocs != NULL)
1053 {
1054 free (free_relocs);
1055 free_relocs = NULL;
1056 }
1057
1058 if (free_contents != NULL)
1059 {
1060 if (! link_info->keep_memory)
1061 free (free_contents);
1062 else
1063 {
1064 /* Cache the section contents for elf_link_input_bfd. */
1065 elf_section_data (sec)->this_hdr.contents = contents;
1066 }
1067 free_contents = NULL;
1068 }
1069
1070 if (free_extsyms != NULL)
1071 {
1072 if (! link_info->keep_memory)
1073 free (free_extsyms);
1074 else
1075 {
1076 /* Cache the symbols for elf_link_input_bfd. */
1077 symtab_hdr->contents = (unsigned char *) isymbuf;
1078 }
1079 free_extsyms = NULL;
1080 }
1081
1082 return TRUE;
1083
1084 error_return:
1085 if (free_relocs != NULL)
1086 free (free_relocs);
1087 if (free_contents != NULL)
1088 free (free_contents);
1089 if (free_extsyms != NULL)
1090 free (free_extsyms);
1091 return FALSE;
1092 }
1093
1094 /* Delete some bytes from a section while relaxing. */
1095
1096 static void
1097 m68hc11_elf_relax_delete_bytes (bfd *abfd, asection *sec,
1098 bfd_vma addr, int count)
1099 {
1100 Elf_Internal_Shdr *symtab_hdr;
1101 unsigned int sec_shndx;
1102 bfd_byte *contents;
1103 Elf_Internal_Rela *irel, *irelend;
1104 bfd_vma toaddr;
1105 Elf_Internal_Sym *isymbuf, *isym, *isymend;
1106 struct elf_link_hash_entry **sym_hashes;
1107 struct elf_link_hash_entry **end_hashes;
1108 unsigned int symcount;
1109
1110 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1111 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1112
1113 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1114
1115 contents = elf_section_data (sec)->this_hdr.contents;
1116
1117 toaddr = sec->size;
1118
1119 irel = elf_section_data (sec)->relocs;
1120 irelend = irel + sec->reloc_count;
1121
1122 /* Actually delete the bytes. */
1123 memmove (contents + addr, contents + addr + count,
1124 (size_t) (toaddr - addr - count));
1125
1126 sec->size -= count;
1127
1128 /* Adjust all the relocs. */
1129 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1130 {
1131 unsigned char code;
1132 unsigned char offset;
1133 unsigned short raddr;
1134 unsigned long old_offset;
1135 int branch_pos;
1136
1137 old_offset = irel->r_offset;
1138
1139 /* See if this reloc was for the bytes we have deleted, in which
1140 case we no longer care about it. Don't delete relocs which
1141 represent addresses, though. */
1142 if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP
1143 && irel->r_offset >= addr && irel->r_offset < addr + count)
1144 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1145 R_M68HC11_NONE);
1146
1147 if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE)
1148 continue;
1149
1150 /* Get the new reloc address. */
1151 if ((irel->r_offset > addr
1152 && irel->r_offset < toaddr))
1153 irel->r_offset -= count;
1154
1155 /* If this is a PC relative reloc, see if the range it covers
1156 includes the bytes we have deleted. */
1157 switch (ELF32_R_TYPE (irel->r_info))
1158 {
1159 default:
1160 break;
1161
1162 case R_M68HC11_RL_JUMP:
1163 code = bfd_get_8 (abfd, contents + irel->r_offset);
1164 switch (code)
1165 {
1166 /* jsr and jmp instruction are also marked with RL_JUMP
1167 relocs but no adjustment must be made. */
1168 case 0x7e:
1169 case 0x9d:
1170 case 0xbd:
1171 continue;
1172
1173 case 0x12:
1174 case 0x13:
1175 branch_pos = 3;
1176 raddr = 4;
1177
1178 /* Special case when we translate a brclr N,y into brclr *<addr>
1179 In this case, the 0x18 page2 prefix is removed.
1180 The reloc offset is not modified but the instruction
1181 size is reduced by 1. */
1182 if (old_offset == addr)
1183 raddr++;
1184 break;
1185
1186 case 0x1e:
1187 case 0x1f:
1188 branch_pos = 3;
1189 raddr = 4;
1190 break;
1191
1192 case 0x18:
1193 branch_pos = 4;
1194 raddr = 5;
1195 break;
1196
1197 default:
1198 branch_pos = 1;
1199 raddr = 2;
1200 break;
1201 }
1202 offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
1203 raddr += old_offset;
1204 raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
1205 if (irel->r_offset < addr && raddr > addr)
1206 {
1207 offset -= count;
1208 bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
1209 }
1210 else if (irel->r_offset >= addr && raddr <= addr)
1211 {
1212 offset += count;
1213 bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
1214 }
1215 else
1216 {
1217 /*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr,
1218 irel->r_offset, addr);*/
1219 }
1220
1221 break;
1222 }
1223 }
1224
1225 /* Adjust the local symbols defined in this section. */
1226 isymend = isymbuf + symtab_hdr->sh_info;
1227 for (isym = isymbuf; isym < isymend; isym++)
1228 {
1229 if (isym->st_shndx == sec_shndx
1230 && isym->st_value > addr
1231 && isym->st_value <= toaddr)
1232 isym->st_value -= count;
1233 }
1234
1235 /* Now adjust the global symbols defined in this section. */
1236 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1237 - symtab_hdr->sh_info);
1238 sym_hashes = elf_sym_hashes (abfd);
1239 end_hashes = sym_hashes + symcount;
1240 for (; sym_hashes < end_hashes; sym_hashes++)
1241 {
1242 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1243 if ((sym_hash->root.type == bfd_link_hash_defined
1244 || sym_hash->root.type == bfd_link_hash_defweak)
1245 && sym_hash->root.u.def.section == sec
1246 && sym_hash->root.u.def.value > addr
1247 && sym_hash->root.u.def.value <= toaddr)
1248 {
1249 sym_hash->root.u.def.value -= count;
1250 }
1251 }
1252 }
1253
1254 /* Specific sections:
1255 - The .page0 is a data section that is mapped in [0x0000..0x00FF].
1256 Page0 accesses are faster on the M68HC11. Soft registers used by GCC-m6811
1257 are located in .page0.
1258 - The .vectors is the section that represents the interrupt
1259 vectors. */
1260 static const struct bfd_elf_special_section elf32_m68hc11_special_sections[] =
1261 {
1262 { ".eeprom", 7, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1263 { ".page0", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1264 { ".softregs", 9, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1265 { ".vectors", 8, 0, SHT_PROGBITS, SHF_ALLOC },
1266 { NULL, 0, 0, 0, 0 }
1267 };
1268 \f
1269 #define ELF_ARCH bfd_arch_m68hc11
1270 #define ELF_MACHINE_CODE EM_68HC11
1271 #define ELF_MAXPAGESIZE 0x1000
1272
1273 #define TARGET_BIG_SYM bfd_elf32_m68hc11_vec
1274 #define TARGET_BIG_NAME "elf32-m68hc11"
1275
1276 #define elf_info_to_howto 0
1277 #define elf_info_to_howto_rel m68hc11_info_to_howto_rel
1278 #define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
1279 #define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
1280 #define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
1281 #define elf_backend_check_relocs elf32_m68hc11_check_relocs
1282 #define elf_backend_relocate_section elf32_m68hc11_relocate_section
1283 #define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
1284 #define elf_backend_object_p 0
1285 #define elf_backend_final_write_processing 0
1286 #define elf_backend_can_gc_sections 1
1287 #define elf_backend_special_sections elf32_m68hc11_special_sections
1288
1289 #define bfd_elf32_bfd_link_hash_table_create \
1290 m68hc11_elf_bfd_link_hash_table_create
1291 #define bfd_elf32_bfd_link_hash_table_free \
1292 m68hc11_elf_bfd_link_hash_table_free
1293 #define bfd_elf32_bfd_merge_private_bfd_data \
1294 _bfd_m68hc11_elf_merge_private_bfd_data
1295 #define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
1296 #define bfd_elf32_bfd_print_private_bfd_data \
1297 _bfd_m68hc11_elf_print_private_bfd_data
1298
1299 #include "elf32-target.h"
git-cvsimport of binutils cvsroot