1 /* Motorola 68HC11-specific support for 32-bit ELF
2 Copyright (C) 1999-2024 Free Software Foundation, Inc.
3 Contributed by Stephane Carrez (stcarrez@nerim.fr)
4 (Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
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.
17
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
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.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 bool m68hc11_info_to_howto_rel
36 (bfd *, arelent *, Elf_Internal_Rela *);
37
38 /* Trampoline generation. */
39 static bool m68hc11_elf_size_one_stub
40 (struct bfd_hash_entry *gen_entry, void *in_arg);
41 static bool 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 bool m68hc11_elf_relax_section
48 (bfd *, asection *, struct bfd_link_info *, bool *);
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 0, /* size */
69 0, /* 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 1, /* size */
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 1, /* size */
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 1, /* size */
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 1, /* size */
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 2, /* size */
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 4, /* size */
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 1, /* size */
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 2, /* size */
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 2, /* size */
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 2, /* size */
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 2, /* size */
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 2, /* size */
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 1, /* size */
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 2, /* size */
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 2, /* size */
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 *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)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 static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)362 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
363 const char *r_name)
364 {
365 unsigned int i;
366
367 for (i = 0;
368 i < (sizeof (elf_m68hc11_howto_table)
369 / sizeof (elf_m68hc11_howto_table[0]));
370 i++)
371 if (elf_m68hc11_howto_table[i].name != NULL
372 && strcasecmp (elf_m68hc11_howto_table[i].name, r_name) == 0)
373 return &elf_m68hc11_howto_table[i];
374
375 return NULL;
376 }
377
378 /* Set the howto pointer for an M68HC11 ELF reloc. */
379
380 static bool
m68hc11_info_to_howto_rel(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)381 m68hc11_info_to_howto_rel (bfd *abfd,
382 arelent *cache_ptr, Elf_Internal_Rela *dst)
383 {
384 unsigned int r_type;
385
386 r_type = ELF32_R_TYPE (dst->r_info);
387 if (r_type >= (unsigned int) R_M68HC11_max)
388 {
389 /* xgettext:c-format */
390 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
391 abfd, r_type);
392 bfd_set_error (bfd_error_bad_value);
393 return false;
394 }
395 cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
396 return true;
397 }
398
399
400 /* Far trampoline generation. */
401
402 /* Build a 68HC11 trampoline stub. */
403 static bool
m68hc11_elf_build_one_stub(struct bfd_hash_entry * gen_entry,void * in_arg)404 m68hc11_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
405 {
406 struct elf32_m68hc11_stub_hash_entry *stub_entry;
407 struct bfd_link_info *info;
408 struct m68hc11_elf_link_hash_table *htab;
409 asection *stub_sec;
410 bfd *stub_bfd;
411 bfd_byte *loc;
412 bfd_vma sym_value, phys_page, phys_addr;
413
414 /* Massage our args to the form they really have. */
415 stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
416 info = (struct bfd_link_info *) in_arg;
417
418 /* Fail if the target section could not be assigned to an output
419 section. The user should fix his linker script. */
420 if (stub_entry->target_section->output_section == NULL
421 && info->non_contiguous_regions)
422 info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. "
423 "Retry without --enable-non-contiguous-regions.\n"),
424 stub_entry->target_section);
425
426 htab = m68hc11_elf_hash_table (info);
427 if (htab == NULL)
428 return false;
429
430 stub_sec = stub_entry->stub_sec;
431
432 /* Make a note of the offset within the stubs for this entry. */
433 stub_entry->stub_offset = stub_sec->size;
434 stub_sec->size += 10;
435 loc = stub_sec->contents + stub_entry->stub_offset;
436
437 stub_bfd = stub_sec->owner;
438
439 /* Create the trampoline call stub:
440
441 pshb
442 ldab #%page(symbol)
443 ldy #%addr(symbol)
444 jmp __trampoline
445
446 */
447 sym_value = (stub_entry->target_value
448 + stub_entry->target_section->output_offset
449 + stub_entry->target_section->output_section->vma);
450 phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
451 phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
452
453 /* pshb; ldab #%page(sym) */
454 bfd_put_8 (stub_bfd, 0x37, loc);
455 bfd_put_8 (stub_bfd, 0xC6, loc + 1);
456 bfd_put_8 (stub_bfd, phys_page, loc + 2);
457 loc += 3;
458
459 /* ldy #%addr(sym) */
460 bfd_put_8 (stub_bfd, 0x18, loc);
461 bfd_put_8 (stub_bfd, 0xCE, loc + 1);
462 bfd_put_16 (stub_bfd, phys_addr, loc + 2);
463 loc += 4;
464
465 /* jmp __trampoline */
466 bfd_put_8 (stub_bfd, 0x7E, loc);
467 bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
468
469 return true;
470 }
471
472 /* As above, but don't actually build the stub. Just bump offset so
473 we know stub section sizes. */
474
475 static bool
m68hc11_elf_size_one_stub(struct bfd_hash_entry * gen_entry,void * in_arg ATTRIBUTE_UNUSED)476 m68hc11_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
477 void *in_arg ATTRIBUTE_UNUSED)
478 {
479 struct elf32_m68hc11_stub_hash_entry *stub_entry;
480
481 /* Massage our args to the form they really have. */
482 stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
483
484 stub_entry->stub_sec->size += 10;
485 return true;
486 }
487
488 /* Create a 68HC11 ELF linker hash table. */
489
490 static struct bfd_link_hash_table *
m68hc11_elf_bfd_link_hash_table_create(bfd * abfd)491 m68hc11_elf_bfd_link_hash_table_create (bfd *abfd)
492 {
493 struct m68hc11_elf_link_hash_table *ret;
494
495 ret = m68hc11_elf_hash_table_create (abfd);
496 if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
497 return NULL;
498
499 ret->size_one_stub = m68hc11_elf_size_one_stub;
500 ret->build_one_stub = m68hc11_elf_build_one_stub;
501
502 return &ret->root.root;
503 }
504
505
506 /* 68HC11 Linker Relaxation. */
507
508 const struct m68hc11_direct_relax
509 {
510 const char *name;
511 unsigned char code;
512 unsigned char direct_code;
513 } m68hc11_direct_relax_table[] = {
514 { "adca", 0xB9, 0x99 },
515 { "adcb", 0xF9, 0xD9 },
516 { "adda", 0xBB, 0x9B },
517 { "addb", 0xFB, 0xDB },
518 { "addd", 0xF3, 0xD3 },
519 { "anda", 0xB4, 0x94 },
520 { "andb", 0xF4, 0xD4 },
521 { "cmpa", 0xB1, 0x91 },
522 { "cmpb", 0xF1, 0xD1 },
523 { "cpd", 0xB3, 0x93 },
524 { "cpxy", 0xBC, 0x9C },
525 /* { "cpy", 0xBC, 0x9C }, */
526 { "eora", 0xB8, 0x98 },
527 { "eorb", 0xF8, 0xD8 },
528 { "jsr", 0xBD, 0x9D },
529 { "ldaa", 0xB6, 0x96 },
530 { "ldab", 0xF6, 0xD6 },
531 { "ldd", 0xFC, 0xDC },
532 { "lds", 0xBE, 0x9E },
533 { "ldxy", 0xFE, 0xDE },
534 /* { "ldy", 0xFE, 0xDE },*/
535 { "oraa", 0xBA, 0x9A },
536 { "orab", 0xFA, 0xDA },
537 { "sbca", 0xB2, 0x92 },
538 { "sbcb", 0xF2, 0xD2 },
539 { "staa", 0xB7, 0x97 },
540 { "stab", 0xF7, 0xD7 },
541 { "std", 0xFD, 0xDD },
542 { "sts", 0xBF, 0x9F },
543 { "stxy", 0xFF, 0xDF },
544 /* { "sty", 0xFF, 0xDF },*/
545 { "suba", 0xB0, 0x90 },
546 { "subb", 0xF0, 0xD0 },
547 { "subd", 0xB3, 0x93 },
548 { 0, 0, 0 }
549 };
550
551 static const struct m68hc11_direct_relax *
find_relaxable_insn(unsigned char code)552 find_relaxable_insn (unsigned char code)
553 {
554 int i;
555
556 for (i = 0; m68hc11_direct_relax_table[i].name; i++)
557 if (m68hc11_direct_relax_table[i].code == code)
558 return &m68hc11_direct_relax_table[i];
559
560 return 0;
561 }
562
563 static int
compare_reloc(const void * e1,const void * e2)564 compare_reloc (const void *e1, const void *e2)
565 {
566 const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
567 const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
568
569 if (i1->r_offset == i2->r_offset)
570 return 0;
571 else
572 return i1->r_offset < i2->r_offset ? -1 : 1;
573 }
574
575 #define M6811_OP_LDX_IMMEDIATE (0xCE)
576
577 static void
m68hc11_relax_group(bfd * abfd,asection * sec,bfd_byte * contents,unsigned value,unsigned long offset,unsigned long end_group)578 m68hc11_relax_group (bfd *abfd, asection *sec, bfd_byte *contents,
579 unsigned value, unsigned long offset,
580 unsigned long end_group)
581 {
582 unsigned char code;
583 unsigned long start_offset;
584 unsigned long ldx_offset = offset;
585 unsigned long ldx_size;
586 int can_delete_ldx;
587 int relax_ldy = 0;
588
589 /* First instruction of the relax group must be a
590 LDX #value or LDY #value. If this is not the case,
591 ignore the relax group. */
592 code = bfd_get_8 (abfd, contents + offset);
593 if (code == 0x18)
594 {
595 relax_ldy++;
596 offset++;
597 code = bfd_get_8 (abfd, contents + offset);
598 }
599 ldx_size = offset - ldx_offset + 3;
600 offset += 3;
601 if (code != M6811_OP_LDX_IMMEDIATE || offset >= end_group)
602 return;
603
604
605 /* We can remove the LDX/LDY only when all bset/brclr instructions
606 of the relax group have been converted to use direct addressing
607 mode. */
608 can_delete_ldx = 1;
609 while (offset < end_group)
610 {
611 unsigned isize;
612 unsigned new_value;
613 int bset_use_y;
614
615 bset_use_y = 0;
616 start_offset = offset;
617 code = bfd_get_8 (abfd, contents + offset);
618 if (code == 0x18)
619 {
620 bset_use_y++;
621 offset++;
622 code = bfd_get_8 (abfd, contents + offset);
623 }
624
625 /* Check the instruction and translate to use direct addressing mode. */
626 switch (code)
627 {
628 /* bset */
629 case 0x1C:
630 code = 0x14;
631 isize = 3;
632 break;
633
634 /* brclr */
635 case 0x1F:
636 code = 0x13;
637 isize = 4;
638 break;
639
640 /* brset */
641 case 0x1E:
642 code = 0x12;
643 isize = 4;
644 break;
645
646 /* bclr */
647 case 0x1D:
648 code = 0x15;
649 isize = 3;
650 break;
651
652 /* This instruction is not recognized and we are not
653 at end of the relax group. Ignore and don't remove
654 the first LDX (we don't know what it is used for...). */
655 default:
656 return;
657 }
658 new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1);
659 new_value += value;
660 if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy)
661 {
662 bfd_put_8 (abfd, code, contents + offset);
663 bfd_put_8 (abfd, new_value, contents + offset + 1);
664 if (start_offset != offset)
665 {
666 m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
667 offset - start_offset);
668 end_group--;
669 }
670 }
671 else
672 {
673 can_delete_ldx = 0;
674 }
675 offset = start_offset + isize;
676 }
677 if (can_delete_ldx)
678 {
679 /* Remove the move instruction (3 or 4 bytes win). */
680 m68hc11_elf_relax_delete_bytes (abfd, sec, ldx_offset, ldx_size);
681 }
682 }
683
684 /* This function handles relaxing for the 68HC11.
685
686
687 and somewhat more difficult to support. */
688
689 static bool
m68hc11_elf_relax_section(bfd * abfd,asection * sec,struct bfd_link_info * link_info,bool * again)690 m68hc11_elf_relax_section (bfd *abfd, asection *sec,
691 struct bfd_link_info *link_info, bool *again)
692 {
693 Elf_Internal_Shdr *symtab_hdr;
694 Elf_Internal_Rela *internal_relocs;
695 Elf_Internal_Rela *free_relocs = NULL;
696 Elf_Internal_Rela *irel, *irelend;
697 bfd_byte *contents = NULL;
698 bfd_byte *free_contents = NULL;
699 Elf32_External_Sym *free_extsyms = NULL;
700 Elf_Internal_Rela *prev_insn_branch = NULL;
701 Elf_Internal_Rela *prev_insn_group = NULL;
702 unsigned insn_group_value = 0;
703 Elf_Internal_Sym *isymbuf = NULL;
704
705 /* Assume nothing changes. */
706 *again = false;
707
708 /* We don't have to do anything for a relocatable link, if
709 this section does not have relocs, or if this is not a
710 code section. */
711 if (bfd_link_relocatable (link_info)
712 || sec->reloc_count == 0
713 || (sec->flags & SEC_RELOC) == 0
714 || (sec->flags & SEC_HAS_CONTENTS) == 0
715 || (sec->flags & SEC_CODE) == 0)
716 return true;
717
718 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
719
720 /* Get a copy of the native relocations. */
721 internal_relocs = (_bfd_elf_link_read_relocs
722 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
723 link_info->keep_memory));
724 if (internal_relocs == NULL)
725 goto error_return;
726 if (! link_info->keep_memory)
727 free_relocs = internal_relocs;
728
729 /* Checking for branch relaxation relies on the relocations to
730 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
731 qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
732 compare_reloc);
733
734 /* Walk through them looking for relaxing opportunities. */
735 irelend = internal_relocs + sec->reloc_count;
736 for (irel = internal_relocs; irel < irelend; irel++)
737 {
738 bfd_vma symval;
739 bfd_vma value;
740 Elf_Internal_Sym *isym;
741 asection *sym_sec;
742 int is_far = 0;
743
744 /* If this isn't something that can be relaxed, then ignore
745 this reloc. */
746 if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16
747 && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
748 && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
749 {
750 prev_insn_branch = 0;
751 prev_insn_group = 0;
752 continue;
753 }
754
755 /* Get the section contents if we haven't done so already. */
756 if (contents == NULL)
757 {
758 /* Get cached copy if it exists. */
759 if (elf_section_data (sec)->this_hdr.contents != NULL)
760 contents = elf_section_data (sec)->this_hdr.contents;
761 else
762 {
763 /* Go get them off disk. */
764 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
765 goto error_return;
766 }
767 }
768
769 /* Try to eliminate an unconditional 8 bit pc-relative branch
770 which immediately follows a conditional 8 bit pc-relative
771 branch around the unconditional branch.
772
773 original: new:
774 bCC lab1 bCC' lab2
775 bra lab2
776 lab1: lab1:
777
778 This happens when the bCC can't reach lab2 at assembly time,
779 but due to other relaxations it can reach at link time. */
780 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_JUMP)
781 {
782 Elf_Internal_Rela *nrel;
783 unsigned char code;
784 unsigned char roffset;
785
786 prev_insn_branch = 0;
787 prev_insn_group = 0;
788
789 /* Do nothing if this reloc is the last byte in the section. */
790 if (irel->r_offset + 2 >= sec->size)
791 continue;
792
793 /* See if the next instruction is an unconditional pc-relative
794 branch, more often than not this test will fail, so we
795 test it first to speed things up. */
796 code = bfd_get_8 (abfd, contents + irel->r_offset + 2);
797 if (code != 0x7e)
798 continue;
799
800 /* Also make sure the next relocation applies to the next
801 instruction and that it's a pc-relative 8 bit branch. */
802 nrel = irel + 1;
803 if (nrel == irelend
804 || irel->r_offset + 3 != nrel->r_offset
805 || ELF32_R_TYPE (nrel->r_info) != (int) R_M68HC11_16)
806 continue;
807
808 /* Make sure our destination immediately follows the
809 unconditional branch. */
810 roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
811 if (roffset != 3)
812 continue;
813
814 prev_insn_branch = irel;
815 prev_insn_group = 0;
816 continue;
817 }
818
819 /* Read this BFD's symbols if we haven't done so already. */
820 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
821 {
822 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
823 if (isymbuf == NULL)
824 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
825 symtab_hdr->sh_info, 0,
826 NULL, NULL, NULL);
827 if (isymbuf == NULL)
828 goto error_return;
829 }
830
831 /* Get the value of the symbol referred to by the reloc. */
832 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
833 {
834 /* A local symbol. */
835 isym = isymbuf + ELF32_R_SYM (irel->r_info);
836 is_far = isym->st_other & STO_M68HC12_FAR;
837 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
838 symval = (isym->st_value
839 + sym_sec->output_section->vma
840 + sym_sec->output_offset);
841 }
842 else
843 {
844 unsigned long indx;
845 struct elf_link_hash_entry *h;
846
847 /* An external symbol. */
848 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
849 h = elf_sym_hashes (abfd)[indx];
850 BFD_ASSERT (h != NULL);
851 if (h->root.type != bfd_link_hash_defined
852 && h->root.type != bfd_link_hash_defweak)
853 {
854 /* This appears to be a reference to an undefined
855 symbol. Just ignore it--it will be caught by the
856 regular reloc processing. */
857 prev_insn_branch = 0;
858 prev_insn_group = 0;
859 continue;
860 }
861
862 is_far = h->other & STO_M68HC12_FAR;
863 isym = 0;
864 sym_sec = h->root.u.def.section;
865 symval = (h->root.u.def.value
866 + sym_sec->output_section->vma
867 + sym_sec->output_offset);
868 }
869
870 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP)
871 {
872 prev_insn_branch = 0;
873 prev_insn_group = 0;
874
875 /* Do nothing if this reloc is the last byte in the section. */
876 if (irel->r_offset == sec->size)
877 continue;
878
879 prev_insn_group = irel;
880 insn_group_value = isym->st_value;
881 continue;
882 }
883
884 /* When we relax some bytes, the size of our section changes.
885 This affects the layout of next input sections that go in our
886 output section. When the symbol is part of another section that
887 will go in the same output section as the current one, it's
888 final address may now be incorrect (too far). We must let the
889 linker re-compute all section offsets before processing this
890 reloc. Code example:
891
892 Initial Final
893 .sect .text section size = 6 section size = 4
894 jmp foo
895 jmp bar
896 .sect .text.foo_bar output_offset = 6 output_offset = 4
897 foo: rts
898 bar: rts
899
900 If we process the reloc now, the jmp bar is replaced by a
901 relative branch to the initial bar address (output_offset 6). */
902 if (*again && sym_sec != sec
903 && sym_sec->output_section == sec->output_section)
904 {
905 prev_insn_group = 0;
906 prev_insn_branch = 0;
907 continue;
908 }
909
910 value = symval;
911 /* Try to turn a far branch to a near branch. */
912 if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
913 && prev_insn_branch)
914 {
915 bfd_vma offset;
916 unsigned char code;
917
918 offset = value - (prev_insn_branch->r_offset
919 + sec->output_section->vma
920 + sec->output_offset + 2);
921
922 /* If the offset is still out of -128..+127 range,
923 leave that far branch unchanged. */
924 if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
925 {
926 prev_insn_branch = 0;
927 continue;
928 }
929
930 /* Shrink the branch. */
931 code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
932 if (code == 0x7e)
933 {
934 code = 0x20;
935 bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
936 bfd_put_8 (abfd, 0xff,
937 contents + prev_insn_branch->r_offset + 1);
938 irel->r_offset = prev_insn_branch->r_offset + 1;
939 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
940 R_M68HC11_PCREL_8);
941 m68hc11_elf_relax_delete_bytes (abfd, sec,
942 irel->r_offset + 1, 1);
943 }
944 else
945 {
946 code ^= 0x1;
947 bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
948 bfd_put_8 (abfd, 0xff,
949 contents + prev_insn_branch->r_offset + 1);
950 irel->r_offset = prev_insn_branch->r_offset + 1;
951 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
952 R_M68HC11_PCREL_8);
953 m68hc11_elf_relax_delete_bytes (abfd, sec,
954 irel->r_offset + 1, 3);
955 }
956 prev_insn_branch = 0;
957 *again = true;
958 }
959
960 /* Try to turn a 16 bit address into a 8 bit page0 address. */
961 else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
962 && (value & 0xff00) == 0)
963 {
964 unsigned char code;
965 unsigned short offset;
966 const struct m68hc11_direct_relax *rinfo;
967
968 prev_insn_branch = 0;
969 offset = bfd_get_16 (abfd, contents + irel->r_offset);
970 offset += value;
971 if ((offset & 0xff00) != 0)
972 {
973 prev_insn_group = 0;
974 continue;
975 }
976
977 if (prev_insn_group)
978 {
979 unsigned long old_sec_size = sec->size;
980
981 /* Note that we've changed the relocation contents, etc. */
982 elf_section_data (sec)->relocs = internal_relocs;
983 free_relocs = NULL;
984
985 elf_section_data (sec)->this_hdr.contents = contents;
986 free_contents = NULL;
987
988 symtab_hdr->contents = (bfd_byte *) isymbuf;
989 free_extsyms = NULL;
990
991 m68hc11_relax_group (abfd, sec, contents, offset,
992 prev_insn_group->r_offset,
993 insn_group_value);
994 irel = prev_insn_group;
995 prev_insn_group = 0;
996 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
997 R_M68HC11_NONE);
998 if (sec->size != old_sec_size)
999 *again = true;
1000 continue;
1001 }
1002
1003 /* Get the opcode. */
1004 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1005 rinfo = find_relaxable_insn (code);
1006 if (rinfo == 0)
1007 {
1008 prev_insn_group = 0;
1009 continue;
1010 }
1011
1012 /* Note that we've changed the relocation contents, etc. */
1013 elf_section_data (sec)->relocs = internal_relocs;
1014 free_relocs = NULL;
1015
1016 elf_section_data (sec)->this_hdr.contents = contents;
1017 free_contents = NULL;
1018
1019 symtab_hdr->contents = (bfd_byte *) isymbuf;
1020 free_extsyms = NULL;
1021
1022 /* Fix the opcode. */
1023 /* printf ("A relaxable case : 0x%02x (%s)\n",
1024 code, rinfo->name); */
1025 bfd_put_8 (abfd, rinfo->direct_code,
1026 contents + irel->r_offset - 1);
1027
1028 /* Delete one byte of data (upper byte of address). */
1029 m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
1030
1031 /* Fix the relocation's type. */
1032 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1033 R_M68HC11_8);
1034
1035 /* That will change things, so, we should relax again. */
1036 *again = true;
1037 }
1038 else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16 && !is_far)
1039 {
1040 unsigned char code;
1041 bfd_vma offset;
1042
1043 prev_insn_branch = 0;
1044 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1045 if (code == 0x7e || code == 0xbd)
1046 {
1047 offset = value - (irel->r_offset
1048 + sec->output_section->vma
1049 + sec->output_offset + 1);
1050 offset += bfd_get_16 (abfd, contents + irel->r_offset);
1051
1052 /* If the offset is still out of -128..+127 range,
1053 leave that far branch unchanged. */
1054 if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
1055 {
1056
1057 /* Note that we've changed the relocation contents, etc. */
1058 elf_section_data (sec)->relocs = internal_relocs;
1059 free_relocs = NULL;
1060
1061 elf_section_data (sec)->this_hdr.contents = contents;
1062 free_contents = NULL;
1063
1064 symtab_hdr->contents = (bfd_byte *) isymbuf;
1065 free_extsyms = NULL;
1066
1067 /* Shrink the branch. */
1068 code = (code == 0x7e) ? 0x20 : 0x8d;
1069 bfd_put_8 (abfd, code,
1070 contents + irel->r_offset - 1);
1071 bfd_put_8 (abfd, 0xff,
1072 contents + irel->r_offset);
1073 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1074 R_M68HC11_PCREL_8);
1075 m68hc11_elf_relax_delete_bytes (abfd, sec,
1076 irel->r_offset + 1, 1);
1077 /* That will change things, so, we should relax again. */
1078 *again = true;
1079 }
1080 }
1081 }
1082 prev_insn_branch = 0;
1083 prev_insn_group = 0;
1084 }
1085
1086 free (free_relocs);
1087 free_relocs = NULL;
1088
1089 if (free_contents != NULL)
1090 {
1091 if (! link_info->keep_memory)
1092 free (free_contents);
1093 else
1094 {
1095 /* Cache the section contents for elf_link_input_bfd. */
1096 elf_section_data (sec)->this_hdr.contents = contents;
1097 }
1098 free_contents = NULL;
1099 }
1100
1101 if (free_extsyms != NULL)
1102 {
1103 if (! link_info->keep_memory)
1104 free (free_extsyms);
1105 else
1106 {
1107 /* Cache the symbols for elf_link_input_bfd. */
1108 symtab_hdr->contents = (unsigned char *) isymbuf;
1109 }
1110 free_extsyms = NULL;
1111 }
1112
1113 return true;
1114
1115 error_return:
1116 free (free_relocs);
1117 free (free_contents);
1118 free (free_extsyms);
1119 return false;
1120 }
1121
1122 /* Delete some bytes from a section while relaxing. */
1123
1124 static void
m68hc11_elf_relax_delete_bytes(bfd * abfd,asection * sec,bfd_vma addr,int count)1125 m68hc11_elf_relax_delete_bytes (bfd *abfd, asection *sec,
1126 bfd_vma addr, int count)
1127 {
1128 Elf_Internal_Shdr *symtab_hdr;
1129 unsigned int sec_shndx;
1130 bfd_byte *contents;
1131 Elf_Internal_Rela *irel, *irelend;
1132 bfd_vma toaddr;
1133 Elf_Internal_Sym *isymbuf, *isym, *isymend;
1134 struct elf_link_hash_entry **sym_hashes;
1135 struct elf_link_hash_entry **end_hashes;
1136 unsigned int symcount;
1137
1138 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1139 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1140
1141 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1142
1143 contents = elf_section_data (sec)->this_hdr.contents;
1144
1145 toaddr = sec->size;
1146
1147 irel = elf_section_data (sec)->relocs;
1148 irelend = irel + sec->reloc_count;
1149
1150 /* Actually delete the bytes. */
1151 memmove (contents + addr, contents + addr + count,
1152 (size_t) (toaddr - addr - count));
1153
1154 sec->size -= count;
1155
1156 /* Adjust all the relocs. */
1157 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1158 {
1159 unsigned char code;
1160 unsigned char offset;
1161 unsigned short raddr;
1162 unsigned long old_offset;
1163 int branch_pos;
1164
1165 old_offset = irel->r_offset;
1166
1167 /* See if this reloc was for the bytes we have deleted, in which
1168 case we no longer care about it. Don't delete relocs which
1169 represent addresses, though. */
1170 if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP
1171 && irel->r_offset >= addr && irel->r_offset < addr + count)
1172 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1173 R_M68HC11_NONE);
1174
1175 if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE)
1176 continue;
1177
1178 /* Get the new reloc address. */
1179 if ((irel->r_offset > addr
1180 && irel->r_offset < toaddr))
1181 irel->r_offset -= count;
1182
1183 /* If this is a PC relative reloc, see if the range it covers
1184 includes the bytes we have deleted. */
1185 switch (ELF32_R_TYPE (irel->r_info))
1186 {
1187 default:
1188 break;
1189
1190 case R_M68HC11_RL_JUMP:
1191 code = bfd_get_8 (abfd, contents + irel->r_offset);
1192 switch (code)
1193 {
1194 /* jsr and jmp instruction are also marked with RL_JUMP
1195 relocs but no adjustment must be made. */
1196 case 0x7e:
1197 case 0x9d:
1198 case 0xbd:
1199 continue;
1200
1201 case 0x12:
1202 case 0x13:
1203 branch_pos = 3;
1204 raddr = 4;
1205
1206 /* Special case when we translate a brclr N,y into brclr *<addr>
1207 In this case, the 0x18 page2 prefix is removed.
1208 The reloc offset is not modified but the instruction
1209 size is reduced by 1. */
1210 if (old_offset == addr)
1211 raddr++;
1212 break;
1213
1214 case 0x1e:
1215 case 0x1f:
1216 branch_pos = 3;
1217 raddr = 4;
1218 break;
1219
1220 case 0x18:
1221 branch_pos = 4;
1222 raddr = 5;
1223 break;
1224
1225 default:
1226 branch_pos = 1;
1227 raddr = 2;
1228 break;
1229 }
1230 offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
1231 raddr += old_offset;
1232 raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
1233 if (irel->r_offset < addr && raddr > addr)
1234 {
1235 offset -= count;
1236 bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
1237 }
1238 else if (irel->r_offset >= addr && raddr <= addr)
1239 {
1240 offset += count;
1241 bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
1242 }
1243 else
1244 {
1245 /*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr,
1246 irel->r_offset, addr);*/
1247 }
1248
1249 break;
1250 }
1251 }
1252
1253 /* Adjust the local symbols defined in this section. */
1254 isymend = isymbuf + symtab_hdr->sh_info;
1255 for (isym = isymbuf; isym < isymend; isym++)
1256 {
1257 if (isym->st_shndx == sec_shndx
1258 && isym->st_value > addr
1259 && isym->st_value <= toaddr)
1260 isym->st_value -= count;
1261 }
1262
1263 /* Now adjust the global symbols defined in this section. */
1264 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1265 - symtab_hdr->sh_info);
1266 sym_hashes = elf_sym_hashes (abfd);
1267 end_hashes = sym_hashes + symcount;
1268 for (; sym_hashes < end_hashes; sym_hashes++)
1269 {
1270 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1271 if ((sym_hash->root.type == bfd_link_hash_defined
1272 || sym_hash->root.type == bfd_link_hash_defweak)
1273 && sym_hash->root.u.def.section == sec
1274 && sym_hash->root.u.def.value > addr
1275 && sym_hash->root.u.def.value <= toaddr)
1276 {
1277 sym_hash->root.u.def.value -= count;
1278 }
1279 }
1280 }
1281
1282 /* Specific sections:
1283 - The .page0 is a data section that is mapped in [0x0000..0x00FF].
1284 Page0 accesses are faster on the M68HC11. Soft registers used by GCC-m6811
1285 are located in .page0.
1286 - The .vectors is the section that represents the interrupt
1287 vectors. */
1288 static const struct bfd_elf_special_section elf32_m68hc11_special_sections[] =
1289 {
1290 { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1291 { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1292 { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1293 { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
1294 { NULL, 0, 0, 0, 0 }
1295 };
1296
1297 #define ELF_ARCH bfd_arch_m68hc11
1298 #define ELF_TARGET_ID M68HC11_ELF_DATA
1299 #define ELF_MACHINE_CODE EM_68HC11
1300 #define ELF_MAXPAGESIZE 0x1000
1301
1302 #define TARGET_BIG_SYM m68hc11_elf32_vec
1303 #define TARGET_BIG_NAME "elf32-m68hc11"
1304
1305 #define elf_info_to_howto NULL
1306 #define elf_info_to_howto_rel m68hc11_info_to_howto_rel
1307 #define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
1308 #define elf_backend_check_relocs elf32_m68hc11_check_relocs
1309 #define elf_backend_relocate_section elf32_m68hc11_relocate_section
1310 #define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
1311 #define elf_backend_object_p 0
1312 #define elf_backend_can_gc_sections 1
1313 #define elf_backend_special_sections elf32_m68hc11_special_sections
1314 #define elf_backend_merge_symbol_attribute elf32_m68hc11_merge_symbol_attribute
1315
1316 #define bfd_elf32_bfd_link_hash_table_create \
1317 m68hc11_elf_bfd_link_hash_table_create
1318 #define bfd_elf32_bfd_merge_private_bfd_data \
1319 _bfd_m68hc11_elf_merge_private_bfd_data
1320 #define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
1321 #define bfd_elf32_bfd_print_private_bfd_data \
1322 _bfd_m68hc11_elf_print_private_bfd_data
1323
1324 #include "elf32-target.h"
1325