1 /* Motorola 68HC12-specific support for 32-bit ELF
2    Copyright 1999, 2000, 2002, 2003, 2004 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 2 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, MA 02110-1301, USA.  */
21 
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf32-m68hc1x.h"
28 #include "elf/m68hc11.h"
29 #include "opcode/m68hc11.h"
30 
31 /* Relocation functions.  */
32 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
33   (bfd *, bfd_reloc_code_real_type);
34 static void m68hc11_info_to_howto_rel
35   (bfd *, arelent *, Elf_Internal_Rela *);
36 
37 /* Trampoline generation.  */
38 static bfd_boolean m68hc12_elf_size_one_stub
39   (struct bfd_hash_entry *gen_entry, void *in_arg);
40 static bfd_boolean m68hc12_elf_build_one_stub
41   (struct bfd_hash_entry *gen_entry, void *in_arg);
42 static struct bfd_link_hash_table* m68hc12_elf_bfd_link_hash_table_create
43   (bfd*);
44 
45 static bfd_boolean m68hc12_elf_set_mach_from_flags PARAMS ((bfd *));
46 
47 /* Use REL instead of RELA to save space */
48 #define USE_REL	1
49 
50 /* The 68HC12 microcontroler has a memory bank switching system
51    with a 16Kb window in the 64Kb address space.  The extended memory
52    is mapped in the 16Kb window (at 0x8000).  The page register controls
53    which 16Kb bank is mapped.  The call/rtc instructions take care of
54    bank switching in function calls/returns.
55 
56    For GNU Binutils to work, we consider there is a physical memory
57    at 0..0x0ffff and a kind of virtual memory above that.  Symbols
58    in virtual memory have their addresses treated in a special way
59    when disassembling and when linking.
60 
61    For the linker to work properly, we must always relocate the virtual
62    memory as if it is mapped at 0x8000.  When a 16-bit relocation is
63    made in the virtual memory, we check that it does not cross the
64    memory bank where it is used.  This would involve a page change
65    which would be wrong.  The 24-bit relocation is for that and it
66    treats the address as a physical address + page number.
67 
68 
69 					Banked
70 					Address Space
71                                         |               |       Page n
72 					+---------------+ 0x1010000
73                                         |               |
74                                         | jsr _foo      |
75                                         | ..            |       Page 3
76                                         | _foo:         |
77 					+---------------+ 0x100C000
78 					|	        |
79                                         | call _bar     |
80 					| ..	        |	Page 2
81 					| _bar:	        |
82 					+---------------+ 0x1008000
83 				/------>|	        |
84 				|	| call _foo     |	Page 1
85 				|	|       	|
86 				|	+---------------+ 0x1004000
87       Physical			|	|	        |
88       Address Space		|	|	        |	Page 0
89 				|	|	        |
90     +-----------+ 0x00FFFF	|	+---------------+ 0x1000000
91     |		|		|
92     | call _foo	|		|
93     |		|		|
94     +-----------+ 0x00BFFF -+---/
95     |		|           |
96     |		|	    |
97     |		| 16K	    |
98     |		|	    |
99     +-----------+ 0x008000 -+
100     |		|
101     |		|
102     =		=
103     |		|
104     |		|
105     +-----------+ 0000
106 
107 
108    The 'call _foo' must be relocated with page 3 and 16-bit address
109    mapped at 0x8000.
110 
111    The 3-bit and 16-bit PC rel relocation is only used by 68HC12.  */
112 static reloc_howto_type elf_m68hc11_howto_table[] = {
113   /* This reloc does nothing.  */
114   HOWTO (R_M68HC11_NONE,	/* 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_dont,/* complain_on_overflow */
121 	 bfd_elf_generic_reloc,	/* special_function */
122 	 "R_M68HC12_NONE",	/* name */
123 	 FALSE,			/* partial_inplace */
124 	 0,			/* src_mask */
125 	 0,			/* dst_mask */
126 	 FALSE),		/* pcrel_offset */
127 
128   /* A 8 bit absolute relocation */
129   HOWTO (R_M68HC11_8,		/* type */
130 	 0,			/* rightshift */
131 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
132 	 8,			/* bitsize */
133 	 FALSE,			/* pc_relative */
134 	 0,			/* bitpos */
135 	 complain_overflow_bitfield,	/* complain_on_overflow */
136 	 bfd_elf_generic_reloc,	/* special_function */
137 	 "R_M68HC12_8",		/* name */
138 	 FALSE,			/* partial_inplace */
139 	 0x00ff,		/* src_mask */
140 	 0x00ff,		/* dst_mask */
141 	 FALSE),		/* pcrel_offset */
142 
143   /* A 8 bit absolute relocation (upper address) */
144   HOWTO (R_M68HC11_HI8,		/* type */
145 	 8,			/* rightshift */
146 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
147 	 8,			/* bitsize */
148 	 FALSE,			/* pc_relative */
149 	 0,			/* bitpos */
150 	 complain_overflow_bitfield,	/* complain_on_overflow */
151 	 bfd_elf_generic_reloc,	/* special_function */
152 	 "R_M68HC12_HI8",	/* name */
153 	 FALSE,			/* partial_inplace */
154 	 0x00ff,		/* src_mask */
155 	 0x00ff,		/* dst_mask */
156 	 FALSE),		/* pcrel_offset */
157 
158   /* A 8 bit absolute relocation (upper address) */
159   HOWTO (R_M68HC11_LO8,		/* type */
160 	 0,			/* rightshift */
161 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
162 	 8,			/* bitsize */
163 	 FALSE,			/* pc_relative */
164 	 0,			/* bitpos */
165 	 complain_overflow_dont,	/* complain_on_overflow */
166 	 bfd_elf_generic_reloc,	/* special_function */
167 	 "R_M68HC12_LO8",	/* name */
168 	 FALSE,			/* partial_inplace */
169 	 0x00ff,		/* src_mask */
170 	 0x00ff,		/* dst_mask */
171 	 FALSE),		/* pcrel_offset */
172 
173   /* A 8 bit PC-rel relocation */
174   HOWTO (R_M68HC11_PCREL_8,	/* type */
175 	 0,			/* rightshift */
176 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
177 	 8,			/* bitsize */
178 	 TRUE,			/* pc_relative */
179 	 0,			/* bitpos */
180 	 complain_overflow_bitfield,	/* complain_on_overflow */
181 	 bfd_elf_generic_reloc,	/* special_function */
182 	 "R_M68HC12_PCREL_8",	/* name */
183 	 FALSE,			/* partial_inplace */
184 	 0x00ff,		/* src_mask */
185 	 0x00ff,		/* dst_mask */
186 	 TRUE),                 /* pcrel_offset */
187 
188   /* A 16 bit absolute relocation */
189   HOWTO (R_M68HC11_16,		/* type */
190 	 0,			/* rightshift */
191 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
192 	 16,			/* bitsize */
193 	 FALSE,			/* pc_relative */
194 	 0,			/* bitpos */
195 	 complain_overflow_dont /*bitfield */ ,	/* complain_on_overflow */
196 	 bfd_elf_generic_reloc,	/* special_function */
197 	 "R_M68HC12_16",	/* name */
198 	 FALSE,			/* partial_inplace */
199 	 0xffff,		/* src_mask */
200 	 0xffff,		/* dst_mask */
201 	 FALSE),		/* pcrel_offset */
202 
203   /* A 32 bit absolute relocation.  This one is never used for the
204      code relocation.  It's used by gas for -gstabs generation.  */
205   HOWTO (R_M68HC11_32,		/* type */
206 	 0,			/* rightshift */
207 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
208 	 32,			/* bitsize */
209 	 FALSE,			/* pc_relative */
210 	 0,			/* bitpos */
211 	 complain_overflow_bitfield,	/* complain_on_overflow */
212 	 bfd_elf_generic_reloc,	/* special_function */
213 	 "R_M68HC12_32",	/* name */
214 	 FALSE,			/* partial_inplace */
215 	 0xffffffff,		/* src_mask */
216 	 0xffffffff,		/* dst_mask */
217 	 FALSE),		/* pcrel_offset */
218 
219   /* A 3 bit absolute relocation */
220   HOWTO (R_M68HC11_3B,		/* type */
221 	 0,			/* rightshift */
222 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
223 	 3,			/* bitsize */
224 	 FALSE,			/* pc_relative */
225 	 0,			/* bitpos */
226 	 complain_overflow_bitfield,	/* complain_on_overflow */
227 	 bfd_elf_generic_reloc,	/* special_function */
228 	 "R_M68HC12_4B",	/* name */
229 	 FALSE,			/* partial_inplace */
230 	 0x003,			/* src_mask */
231 	 0x003,			/* dst_mask */
232 	 FALSE),		/* pcrel_offset */
233 
234   /* A 16 bit PC-rel relocation */
235   HOWTO (R_M68HC11_PCREL_16,	/* type */
236 	 0,			/* rightshift */
237 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
238 	 16,			/* bitsize */
239 	 TRUE,			/* pc_relative */
240 	 0,			/* bitpos */
241 	 complain_overflow_dont,	/* complain_on_overflow */
242 	 bfd_elf_generic_reloc,	/* special_function */
243 	 "R_M68HC12_PCREL_16",	/* name */
244 	 FALSE,			/* partial_inplace */
245 	 0xffff,		/* src_mask */
246 	 0xffff,		/* dst_mask */
247 	 TRUE),                 /* pcrel_offset */
248 
249   /* GNU extension to record C++ vtable hierarchy */
250   HOWTO (R_M68HC11_GNU_VTINHERIT,	/* type */
251 	 0,			/* rightshift */
252 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
253 	 0,			/* bitsize */
254 	 FALSE,			/* pc_relative */
255 	 0,			/* bitpos */
256 	 complain_overflow_dont,	/* complain_on_overflow */
257 	 NULL,			/* special_function */
258 	 "R_M68HC11_GNU_VTINHERIT",	/* name */
259 	 FALSE,			/* partial_inplace */
260 	 0,			/* src_mask */
261 	 0,			/* dst_mask */
262 	 FALSE),		/* pcrel_offset */
263 
264   /* GNU extension to record C++ vtable member usage */
265   HOWTO (R_M68HC11_GNU_VTENTRY,	/* type */
266 	 0,			/* rightshift */
267 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
268 	 0,			/* bitsize */
269 	 FALSE,			/* pc_relative */
270 	 0,			/* bitpos */
271 	 complain_overflow_dont,	/* complain_on_overflow */
272 	 _bfd_elf_rel_vtable_reloc_fn,	/* special_function */
273 	 "R_M68HC11_GNU_VTENTRY",	/* name */
274 	 FALSE,			/* partial_inplace */
275 	 0,			/* src_mask */
276 	 0,			/* dst_mask */
277 	 FALSE),		/* pcrel_offset */
278 
279   /* A 24 bit relocation */
280   HOWTO (R_M68HC11_24,	        /* type */
281 	 0,			/* rightshift */
282 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
283 	 24,			/* bitsize */
284 	 FALSE,			/* pc_relative */
285 	 0,			/* bitpos */
286 	 complain_overflow_dont,	/* complain_on_overflow */
287 	 m68hc11_elf_special_reloc,	/* special_function */
288 	 "R_M68HC12_24",	/* name */
289 	 FALSE,			/* partial_inplace */
290 	 0xffffff,		/* src_mask */
291 	 0xffffff,		/* dst_mask */
292 	 FALSE),		/* pcrel_offset */
293 
294   /* A 16-bit low relocation */
295   HOWTO (R_M68HC11_LO16,        /* type */
296 	 0,			/* rightshift */
297 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
298 	 16,			/* bitsize */
299 	 FALSE,			/* pc_relative */
300 	 0,			/* bitpos */
301 	 complain_overflow_dont,	/* complain_on_overflow */
302 	 m68hc11_elf_special_reloc,/* special_function */
303 	 "R_M68HC12_LO16",	/* name */
304 	 FALSE,			/* partial_inplace */
305 	 0xffff,		/* src_mask */
306 	 0xffff,		/* dst_mask */
307 	 FALSE),		/* pcrel_offset */
308 
309   /* A page relocation */
310   HOWTO (R_M68HC11_PAGE,        /* type */
311 	 0,			/* rightshift */
312 	 0,			/* size (0 = byte, 1 = short, 2 = long) */
313 	 8,			/* bitsize */
314 	 FALSE,			/* pc_relative */
315 	 0,			/* bitpos */
316 	 complain_overflow_dont,	/* complain_on_overflow */
317 	 m68hc11_elf_special_reloc,/* special_function */
318 	 "R_M68HC12_PAGE",	/* name */
319 	 FALSE,			/* partial_inplace */
320 	 0x00ff,		/* src_mask */
321 	 0x00ff,		/* dst_mask */
322 	 FALSE),		/* pcrel_offset */
323 
324   EMPTY_HOWTO (14),
325   EMPTY_HOWTO (15),
326   EMPTY_HOWTO (16),
327   EMPTY_HOWTO (17),
328   EMPTY_HOWTO (18),
329   EMPTY_HOWTO (19),
330 
331   /* Mark beginning of a jump instruction (any form).  */
332   HOWTO (R_M68HC11_RL_JUMP,	/* type */
333 	 0,			/* rightshift */
334 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
335 	 0,			/* bitsize */
336 	 FALSE,			/* pc_relative */
337 	 0,			/* bitpos */
338 	 complain_overflow_dont,	/* complain_on_overflow */
339 	 m68hc11_elf_ignore_reloc,	/* special_function */
340 	 "R_M68HC12_RL_JUMP",	/* name */
341 	 TRUE,			/* partial_inplace */
342 	 0,			/* src_mask */
343 	 0,			/* dst_mask */
344 	 TRUE),                 /* pcrel_offset */
345 
346   /* Mark beginning of Gcc relaxation group instruction.  */
347   HOWTO (R_M68HC11_RL_GROUP,	/* type */
348 	 0,			/* rightshift */
349 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
350 	 0,			/* bitsize */
351 	 FALSE,			/* pc_relative */
352 	 0,			/* bitpos */
353 	 complain_overflow_dont,	/* complain_on_overflow */
354 	 m68hc11_elf_ignore_reloc,	/* special_function */
355 	 "R_M68HC12_RL_GROUP",	/* name */
356 	 TRUE,			/* partial_inplace */
357 	 0,			/* src_mask */
358 	 0,			/* dst_mask */
359 	 TRUE),                 /* pcrel_offset */
360 };
361 
362 /* Map BFD reloc types to M68HC11 ELF reloc types.  */
363 
364 struct m68hc11_reloc_map
365 {
366   bfd_reloc_code_real_type bfd_reloc_val;
367   unsigned char elf_reloc_val;
368 };
369 
370 static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
371   {BFD_RELOC_NONE, R_M68HC11_NONE,},
372   {BFD_RELOC_8, R_M68HC11_8},
373   {BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
374   {BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
375   {BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
376   {BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
377   {BFD_RELOC_16, R_M68HC11_16},
378   {BFD_RELOC_32, R_M68HC11_32},
379   {BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
380 
381   {BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
382   {BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
383 
384   {BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
385   {BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
386   {BFD_RELOC_M68HC11_24, R_M68HC11_24},
387 
388   {BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
389   {BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
390 };
391 
392 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)393 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
394                                  bfd_reloc_code_real_type code)
395 {
396   unsigned int i;
397 
398   for (i = 0;
399        i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
400        i++)
401     {
402       if (m68hc11_reloc_map[i].bfd_reloc_val == code)
403 	return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
404     }
405 
406   return NULL;
407 }
408 
409 /* Set the howto pointer for an M68HC11 ELF reloc.  */
410 
411 static void
m68hc11_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)412 m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
413                            arelent *cache_ptr, Elf_Internal_Rela *dst)
414 {
415   unsigned int r_type;
416 
417   r_type = ELF32_R_TYPE (dst->r_info);
418   BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
419   cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
420 }
421 
422 
423 /* Far trampoline generation.  */
424 
425 /* Build a 68HC12 trampoline stub.  */
426 static bfd_boolean
m68hc12_elf_build_one_stub(struct bfd_hash_entry * gen_entry,void * in_arg)427 m68hc12_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
428 {
429   struct elf32_m68hc11_stub_hash_entry *stub_entry;
430   struct bfd_link_info *info;
431   struct m68hc11_elf_link_hash_table *htab;
432   asection *stub_sec;
433   bfd *stub_bfd;
434   bfd_byte *loc;
435   bfd_vma sym_value, phys_page, phys_addr;
436 
437   /* Massage our args to the form they really have.  */
438   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
439   info = (struct bfd_link_info *) in_arg;
440 
441   htab = m68hc11_elf_hash_table (info);
442 
443   stub_sec = stub_entry->stub_sec;
444 
445   /* Make a note of the offset within the stubs for this entry.  */
446   stub_entry->stub_offset = stub_sec->size;
447   stub_sec->size += 7;
448   loc = stub_sec->contents + stub_entry->stub_offset;
449 
450   stub_bfd = stub_sec->owner;
451 
452   /* Create the trampoline call stub:
453 
454      ldy #%addr(symbol)
455      call %page(symbol), __trampoline
456 
457   */
458   sym_value = (stub_entry->target_value
459                + stub_entry->target_section->output_offset
460                + stub_entry->target_section->output_section->vma);
461   phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
462   phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
463 
464   /* ldy #%page(sym) */
465   bfd_put_8 (stub_bfd, 0xCD, loc);
466   bfd_put_16 (stub_bfd, phys_addr, loc + 1);
467   loc += 3;
468 
469   /* call %page(sym), __trampoline  */
470   bfd_put_8 (stub_bfd, 0x4a, loc);
471   bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
472   bfd_put_8 (stub_bfd, phys_page, loc + 3);
473 
474   return TRUE;
475 }
476 
477 /* As above, but don't actually build the stub.  Just bump offset so
478    we know stub section sizes.  */
479 
480 static bfd_boolean
m68hc12_elf_size_one_stub(struct bfd_hash_entry * gen_entry,void * in_arg ATTRIBUTE_UNUSED)481 m68hc12_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
482                            void *in_arg ATTRIBUTE_UNUSED)
483 {
484   struct elf32_m68hc11_stub_hash_entry *stub_entry;
485 
486   /* Massage our args to the form they really have.  */
487   stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
488 
489   stub_entry->stub_sec->size += 7;
490   return TRUE;
491 }
492 
493 /* Create a 68HC12 ELF linker hash table.  */
494 
495 static struct bfd_link_hash_table *
m68hc12_elf_bfd_link_hash_table_create(bfd * abfd)496 m68hc12_elf_bfd_link_hash_table_create (bfd *abfd)
497 {
498   struct m68hc11_elf_link_hash_table *ret;
499 
500   ret = m68hc11_elf_hash_table_create (abfd);
501   if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
502     return NULL;
503 
504   ret->size_one_stub = m68hc12_elf_size_one_stub;
505   ret->build_one_stub = m68hc12_elf_build_one_stub;
506 
507   return &ret->root.root;
508 }
509 
510 static bfd_boolean
m68hc12_elf_set_mach_from_flags(bfd * abfd)511 m68hc12_elf_set_mach_from_flags (bfd *abfd)
512 {
513   flagword flags = elf_elfheader (abfd)->e_flags;
514 
515   switch (flags & EF_M68HC11_MACH_MASK)
516     {
517     case EF_M68HC12_MACH:
518       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812);
519       break;
520     case EF_M68HCS12_MACH:
521       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812s);
522       break;
523     case EF_M68HC11_GENERIC:
524       bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12,
525                                  bfd_mach_m6812_default);
526       break;
527     default:
528       return FALSE;
529     }
530   return TRUE;
531 }
532 
533 /* Specific sections:
534    - The .page0 is a data section that is mapped in [0x0000..0x00FF].
535      Page0 accesses are faster on the M68HC12.
536    - The .vectors is the section that represents the interrupt
537      vectors.  */
538 static const struct bfd_elf_special_section elf32_m68hc12_special_sections[] =
539 {
540   { ".eeprom",   7, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
541   { ".page0",    6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
542   { ".softregs", 9, 0, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
543   { ".vectors",  8, 0, SHT_PROGBITS, SHF_ALLOC },
544   { NULL,        0, 0, 0,            0 }
545 };
546 
547 #define ELF_ARCH		bfd_arch_m68hc12
548 #define ELF_MACHINE_CODE	EM_68HC12
549 #define ELF_MAXPAGESIZE		0x1000
550 
551 #define TARGET_BIG_SYM          bfd_elf32_m68hc12_vec
552 #define TARGET_BIG_NAME		"elf32-m68hc12"
553 
554 #define elf_info_to_howto	0
555 #define elf_info_to_howto_rel	m68hc11_info_to_howto_rel
556 #define elf_backend_gc_mark_hook     elf32_m68hc11_gc_mark_hook
557 #define elf_backend_gc_sweep_hook    elf32_m68hc11_gc_sweep_hook
558 #define elf_backend_check_relocs     elf32_m68hc11_check_relocs
559 #define elf_backend_relocate_section elf32_m68hc11_relocate_section
560 #define elf_backend_object_p		m68hc12_elf_set_mach_from_flags
561 #define elf_backend_final_write_processing	0
562 #define elf_backend_can_gc_sections		1
563 #define elf_backend_special_sections elf32_m68hc12_special_sections
564 #define elf_backend_post_process_headers     elf32_m68hc11_post_process_headers
565 #define elf_backend_add_symbol_hook  elf32_m68hc11_add_symbol_hook
566 
567 #define bfd_elf32_bfd_link_hash_table_create \
568                                 m68hc12_elf_bfd_link_hash_table_create
569 #define bfd_elf32_bfd_link_hash_table_free \
570 				m68hc11_elf_bfd_link_hash_table_free
571 #define bfd_elf32_bfd_merge_private_bfd_data \
572 					_bfd_m68hc11_elf_merge_private_bfd_data
573 #define bfd_elf32_bfd_set_private_flags	_bfd_m68hc11_elf_set_private_flags
574 #define bfd_elf32_bfd_print_private_bfd_data \
575 					_bfd_m68hc11_elf_print_private_bfd_data
576 
577 #include "elf32-target.h"
578