1 /* BFD library support routines for the Hitachi H8/300 architecture.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Hacked by Steve Chamberlain of Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include "h8300-opcode.h"
30 static struct h8_opcode * h8_opcodes_sorted[256][MAXSAME];
32 /* Run through the opcodes and sort them into order to make them easy
36 DEFUN_VOID(bfd_h8_disassemble_init)
41 for (p = h8_opcodes; p->name; p++) {
47 if ((int)p->data.nib[0] < 16) {
48 n1 =(int) p->data.nib[0] ;
50 if ((int)p->data.nib[1] < 16) {
51 n2 = (int) p->data.nib[1];
54 for (i = 0; i < MAXSAME; i++) {
56 if (h8_opcodes_sorted[j][i] == (struct h8_opcode *)NULL) {
57 h8_opcodes_sorted[j][i] = p;
62 if (i==MAXSAME)abort();
64 /* Just make sure there are an even number of nibbles in it, and
65 that the count is the same s the length */
66 for (i = 0; p->data.nib[i] != E; i++) ;
68 if (i/2 != p->length) abort();
70 for (i = 0; i < 256; i++)
72 if (h8_opcodes_sorted[i][0])
73 p = h8_opcodes_sorted[i][0];
74 else h8_opcodes_sorted[i][0] = p;
80 DEFUN(bfd_h8_disassemble,(addr, data, stream),
82 CONST bfd_byte *data AND
85 /* Find the first entry in the table for this opcode */
86 CONST static char *regnames[] = {
87 "r0h","r1h","r2h","r3h","r4h","r5h","r6h","r7h",
88 "r0l","r1l","r2l","r3l","r4l","r5l","r6l","r7l" };
94 struct h8_opcode **p = h8_opcodes_sorted[(unsigned)(data[0])];
97 /* Find the exact opcode/arg combo */
100 unsigned int len = 0;
104 op_enum_type looking_for = *nib;
105 int thisnib = data[len>>1] ;
106 thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
107 if ((int)looking_for & (int)B31) {
108 if (((int)thisnib & 0x8) ==0) goto fail;
109 looking_for = (op_enum_type)((int)looking_for & ~(int)B31);
111 if ((int)looking_for & (int)B30) {
112 if (((int)thisnib & 0x8) !=0) goto fail;
113 looking_for = (op_enum_type)((int)looking_for & ~(int)B30);
115 switch (looking_for) {
116 case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
117 case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
118 if ((int)looking_for != thisnib) goto fail;
125 abs = (data[len>>1]) * 256 + data[(len+2)>>1];
133 abs = thisnib == 0x80 ? 2:1;
159 fprintf(stream, "Dont understand \n");
170 fprintf(stream, "%02x %02x .word\tH'%x,H'%x\n",
177 for (i = 0; i < q->length; i++) {
178 fprintf(stream, "%02x ", data[i]);
181 fprintf(stream, " ");
184 fprintf(stream, "%s\t",q->name);
185 /* Now print out the args */
187 op_enum_type *args = q->args.nib;
191 fprintf(stream, ",");
192 switch ((int)(*args) & ~((int)B30|(int)B31)) {
196 fprintf(stream, "#H'%x", (unsigned)abs); break;
198 fprintf(stream, "%s", regnames[rd]); break;
200 fprintf(stream, "%s",regnames[rs]); break;
202 fprintf(stream, "r%d", rd& 0x7); break;
204 fprintf(stream, "r%d", rs & 0x7); break;
206 fprintf(stream, "@r%d+", rs & 0x7); break;
208 fprintf(stream, "@-r%d", rd & 0x7); break;
210 fprintf(stream, "@r%d", rd & 0x7); break;
212 fprintf(stream, "@r%d",rs & 0x7); break;
217 fprintf(stream, "@H'%x", (unsigned)abs); break;
219 fprintf(stream, ".%s%d (%x)",(char)abs>0 ? "+" :"", (char)abs,
224 fprintf(stream, "@(%d,r%d)", abs, rdisp & 0x7); break;
226 fprintf(stream, "ccr"); break;
228 fprintf(stream, "#%d",abs); break;
241 unsigned int DEFUN( print_insn_h8300,(addr, data, file),
243 CONST bfd_byte *data AND
248 bfd_h8_disassemble_init();
252 return bfd_h8_disassemble(addr, data, file);
256 Relocations for the H8
259 static bfd_reloc_status_enum_type
260 DEFUN(howto16_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section),
262 arelent *reloc_entry AND
263 asymbol *symbol_in AND
264 unsigned char *data AND
265 asection *ignore_input_section)
268 bfd_vma addr = reloc_entry->address;
269 long x = bfd_get_16(abfd, (bfd_byte *)data + addr);
271 HOWTO_PREPARE(relocation, symbol_in);
273 x = (x + relocation + reloc_entry->addend);
275 bfd_put_16(abfd, x, (bfd_byte *)data + addr);
280 static bfd_reloc_status_enum_type
281 DEFUN(howto8_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section),
283 arelent *reloc_entry AND
284 asymbol *symbol_in AND
285 unsigned char *data AND
286 asection *ignore_input_section)
289 bfd_vma addr = reloc_entry->address;
290 long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
292 HOWTO_PREPARE(relocation, symbol_in);
294 x = (x + relocation + reloc_entry->addend);
296 bfd_put_8(abfd, x, (bfd_byte *)data + addr);
301 static bfd_reloc_status_enum_type
302 DEFUN(howto8_FFnn_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section),
304 arelent *reloc_entry AND
305 asymbol *symbol_in AND
306 unsigned char *data AND
307 asection *ignore_input_section)
310 bfd_vma addr = reloc_entry->address;
312 long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
314 HOWTO_PREPARE(relocation, symbol_in);
316 x = (x + relocation + reloc_entry->addend);
318 bfd_put_8(abfd, x, (bfd_byte *)data + addr);
322 static bfd_reloc_status_enum_type
323 DEFUN(howto8_pcrel_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section),
325 arelent *reloc_entry AND
326 asymbol *symbol_in AND
327 unsigned char *data AND
328 asection *ignore_input_section)
331 bfd_vma addr = reloc_entry->address;
332 long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
334 HOWTO_PREPARE(relocation, symbol_in);
336 x = (x + relocation + reloc_entry->addend);
338 bfd_put_8(abfd, x, (bfd_byte *)data + addr);
343 static reloc_howto_type howto_16
344 = NEWHOWTO(howto16_callback,"abs16",1,0,0);
345 static reloc_howto_type howto_8
346 = NEWHOWTO(howto8_callback,"abs8",0,0,0);
348 static reloc_howto_type howto_8_FFnn
349 = NEWHOWTO(howto8_FFnn_callback,"ff00+abs8",0,0,0);
351 static reloc_howto_type howto_8_pcrel
352 = NEWHOWTO(howto8_pcrel_callback,"pcrel8",0,1,1);
356 static CONST struct reloc_howto_struct *
357 DEFUN(local_bfd_reloc_type_lookup,(arch, code),
358 bfd_arch_info_struct_type *arch AND
359 bfd_reloc_code_enum_type code)
364 case BFD_RELOC_8_FFnn:
365 return &howto_8_FFnn;
368 case BFD_RELOC_8_PCREL:
369 return &howto_8_pcrel;
371 return (reloc_howto_type *)NULL;
374 int bfd_default_scan_num_mach();
377 DEFUN(h8300_scan,(info, string),
378 CONST struct bfd_arch_info_struct *info AND
381 if (strcmp(string,"h8300") == 0) return true;
382 if (strcmp(string,"H8300") == 0) return true;
383 if (strcmp(string,"h8/300") == 0) return true;
384 if (strcmp(string,"H8/300") == 0) return true;
387 static bfd_arch_info_struct_type arch_info_struct =
389 16, /* 16 bits in a word */
390 16, /* 16 bits in an address */
391 8, /* 8 bits in a byte */
393 0, /* only 1 machine */
394 "H8/300", /* arch_name */
395 "H8/300", /* printable name */
396 true, /* the default machine */
397 bfd_default_compatible,
400 local_bfd_reloc_type_lookup,
407 void DEFUN_VOID(bfd_h8300_arch)
409 bfd_arch_linkin(&arch_info_struct);