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Commit | Line | Data |
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e89f2fbe SC |
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. | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
e89f2fbe | 21 | #include "bfd.h" |
3b4f1a5d | 22 | #include "sysdep.h" |
e89f2fbe SC |
23 | #include "libbfd.h" |
24 | ||
25 | #define DEFINE_TABLE | |
c3eb25fc | 26 | #include "opcode/h8300.h" |
e89f2fbe SC |
27 | |
28 | #define MAXSAME 14 | |
29 | ||
30 | static struct h8_opcode * h8_opcodes_sorted[256][MAXSAME]; | |
31 | ||
32 | /* Run through the opcodes and sort them into order to make them easy | |
33 | to disassemble | |
34 | */ | |
35 | static void | |
36 | DEFUN_VOID(bfd_h8_disassemble_init) | |
37 | { | |
38 | unsigned int i; | |
39 | struct h8_opcode *p; | |
40 | ||
41 | for (p = h8_opcodes; p->name; p++) { | |
42 | int where = 0; | |
43 | int n1 = 0; | |
44 | int n2 = 0; | |
45 | int n3 = 0; | |
46 | int n4= 0; | |
47 | if ((int)p->data.nib[0] < 16) { | |
48 | n1 =(int) p->data.nib[0] ; | |
49 | } else n1 = 0; | |
50 | if ((int)p->data.nib[1] < 16) { | |
51 | n2 = (int) p->data.nib[1]; | |
52 | }else n2 = 0; | |
53 | ||
54 | for (i = 0; i < MAXSAME; i++) { | |
55 | int j = n1 * 16 + n2; | |
56 | if (h8_opcodes_sorted[j][i] == (struct h8_opcode *)NULL) { | |
57 | h8_opcodes_sorted[j][i] = p; | |
58 | break; | |
59 | } | |
60 | } | |
61 | ||
62 | if (i==MAXSAME)abort(); | |
63 | ||
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++) ; | |
67 | if (i & 1) abort(); | |
68 | if (i/2 != p->length) abort(); | |
69 | } | |
70 | for (i = 0; i < 256; i++) | |
71 | { | |
72 | if (h8_opcodes_sorted[i][0]) | |
73 | p = h8_opcodes_sorted[i][0]; | |
74 | else h8_opcodes_sorted[i][0] = p; | |
75 | } | |
76 | } | |
77 | ||
b2c91bd9 | 78 | |
e89f2fbe SC |
79 | unsigned int |
80 | DEFUN(bfd_h8_disassemble,(addr, data, stream), | |
81 | bfd_vma addr AND | |
82 | CONST bfd_byte *data AND | |
83 | FILE *stream) | |
84 | { | |
85 | /* Find the first entry in the table for this opcode */ | |
b2c91bd9 SC |
86 | CONST static char *regnames[] = { |
87 | "r0h","r1h","r2h","r3h","r4h","r5h","r6h","r7h", | |
88 | "r0l","r1l","r2l","r3l","r4l","r5l","r6l","r7l" }; | |
89 | ||
e89f2fbe SC |
90 | int rs = 0; |
91 | int rd = 0; | |
92 | int rdisp = 0; | |
93 | int abs = 0; | |
94 | struct h8_opcode **p = h8_opcodes_sorted[(unsigned)(data[0])]; | |
95 | struct h8_opcode *q; | |
96 | ||
97 | /* Find the exact opcode/arg combo */ | |
98 | while (*p) { | |
3b4f1a5d | 99 | op_type *nib; |
e89f2fbe SC |
100 | unsigned int len = 0; |
101 | q = *p++; | |
102 | nib =q->data.nib; | |
103 | while (*nib != E) { | |
3b4f1a5d | 104 | op_type looking_for = *nib; |
e89f2fbe SC |
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; | |
3b4f1a5d | 109 | looking_for = (op_type)((int)looking_for & ~(int)B31); |
e89f2fbe SC |
110 | } |
111 | if ((int)looking_for & (int)B30) { | |
112 | if (((int)thisnib & 0x8) !=0) goto fail; | |
3b4f1a5d | 113 | looking_for = (op_type)((int)looking_for & ~(int)B30); |
e89f2fbe SC |
114 | } |
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; | |
119 | break; | |
120 | case ABS16SRC: | |
121 | case ABS16DST: | |
122 | case DISPSRC: | |
123 | case DISPDST: | |
124 | case IMM16: | |
125 | abs = (data[len>>1]) * 256 + data[(len+2)>>1]; | |
126 | len+=3; | |
127 | nib+=3; | |
128 | break; | |
129 | case DISPREG: | |
130 | rdisp = thisnib; | |
131 | break; | |
132 | case KBIT: | |
3b4f1a5d | 133 | abs = thisnib == 0x8 ? 2:1; |
e89f2fbe SC |
134 | break; |
135 | case IMM8: | |
136 | case ABS8SRC: | |
137 | case ABS8DST: | |
0d4b8e3f | 138 | case MEMIND: |
e89f2fbe SC |
139 | case DISP8: |
140 | abs= data[len>>1]; | |
141 | len++; | |
142 | nib++; | |
143 | break; | |
144 | case IMM3: | |
145 | abs = thisnib ; | |
146 | break; | |
147 | case RS8: | |
148 | case RS16: | |
149 | case RSINC: | |
150 | case RSIND: | |
151 | rs = thisnib; | |
152 | break; | |
153 | case RD16: | |
154 | case RDDEC: | |
155 | case RD8: | |
156 | case RDIND: | |
157 | rd = thisnib; | |
158 | break; | |
159 | default: | |
160 | fprintf(stream, "Dont understand \n"); | |
161 | goto found; | |
162 | } | |
163 | len++; | |
164 | nib++; | |
165 | } | |
166 | goto found; | |
167 | fail: | |
168 | ; | |
169 | ||
170 | } | |
3b4f1a5d | 171 | fprintf(stream, "%02x %02x .word\tH'%x,H'%x", |
b2c91bd9 SC |
172 | data[0], data[1], |
173 | data[0], data[1]); | |
e89f2fbe SC |
174 | return 2; |
175 | found:; | |
176 | { int i; | |
177 | ||
178 | for (i = 0; i < q->length; i++) { | |
179 | fprintf(stream, "%02x ", data[i]); | |
180 | } | |
181 | for (; i < 6; i++) { | |
182 | fprintf(stream, " "); | |
183 | } | |
184 | } | |
185 | fprintf(stream, "%s\t",q->name); | |
186 | /* Now print out the args */ | |
187 | { | |
3b4f1a5d | 188 | op_type *args = q->args.nib; |
e89f2fbe SC |
189 | int hadone = 0; |
190 | while (*args != E) { | |
191 | if (hadone) | |
192 | fprintf(stream, ","); | |
193 | switch ((int)(*args) & ~((int)B30|(int)B31)) { | |
194 | case IMM16: | |
195 | case IMM8: | |
196 | case IMM3: | |
0d4b8e3f SC |
197 | fprintf(stream, "#0x%x", (unsigned)abs); |
198 | break; | |
e89f2fbe | 199 | case RD8: |
0d4b8e3f SC |
200 | fprintf(stream, "%s", regnames[rd]); |
201 | break; | |
e89f2fbe | 202 | case RS8: |
0d4b8e3f SC |
203 | fprintf(stream, "%s",regnames[rs]); |
204 | break; | |
e89f2fbe | 205 | case RD16: |
0d4b8e3f SC |
206 | fprintf(stream, "r%d", rd& 0x7); |
207 | break; | |
e89f2fbe | 208 | case RS16: |
0d4b8e3f SC |
209 | fprintf(stream, "r%d", rs & 0x7); |
210 | break; | |
e89f2fbe | 211 | case RSINC: |
0d4b8e3f SC |
212 | fprintf(stream, "@r%d+", rs & 0x7); |
213 | break; | |
e89f2fbe | 214 | case RDDEC: |
0d4b8e3f SC |
215 | fprintf(stream, "@-r%d", rd & 0x7); |
216 | break; | |
e89f2fbe | 217 | case RDIND: |
0d4b8e3f SC |
218 | fprintf(stream, "@r%d", rd & 0x7); |
219 | break; | |
e89f2fbe | 220 | case RSIND: |
0d4b8e3f SC |
221 | fprintf(stream, "@r%d",rs & 0x7); |
222 | break; | |
e89f2fbe SC |
223 | case ABS8SRC: |
224 | case ABS16SRC: | |
225 | case ABS16DST: | |
226 | case ABS8DST: | |
0d4b8e3f SC |
227 | fprintf(stream, "@0x%x", (unsigned)abs); |
228 | break; | |
229 | case MEMIND: | |
230 | fprintf(stream, "@@%d (%x)",abs, abs); | |
231 | break; | |
e89f2fbe | 232 | case DISP8: |
b2c91bd9 SC |
233 | fprintf(stream, ".%s%d (%x)",(char)abs>0 ? "+" :"", (char)abs, |
234 | addr + (char)abs); | |
235 | break; | |
e89f2fbe SC |
236 | case DISPSRC: |
237 | case DISPDST: | |
0d4b8e3f SC |
238 | fprintf(stream, "@(0x%x,r%d)", abs, rdisp & 0x7); |
239 | break; | |
e89f2fbe | 240 | case CCR: |
0d4b8e3f SC |
241 | fprintf(stream, "ccr"); |
242 | break; | |
e89f2fbe | 243 | case KBIT: |
0d4b8e3f SC |
244 | fprintf(stream, "#%d",abs); |
245 | break; | |
e89f2fbe SC |
246 | default: |
247 | abort(); | |
248 | } | |
249 | hadone = 1; | |
250 | args++; | |
251 | } | |
252 | } | |
253 | return q->length; | |
254 | } | |
255 | ||
256 | ||
257 | ||
3b4f1a5d | 258 | unsigned int DEFUN(print_insn_h8300,(addr, data, file), |
e89f2fbe | 259 | bfd_vma addr AND |
3b4f1a5d | 260 | CONST char *data AND |
e89f2fbe SC |
261 | PTR file) |
262 | { | |
263 | static boolean init; | |
264 | if (!init) { | |
265 | bfd_h8_disassemble_init(); | |
266 | init= 1; | |
e89f2fbe | 267 | } |
3b4f1a5d SC |
268 | |
269 | return bfd_h8_disassemble(addr, (bfd_byte *)data, file); | |
e89f2fbe SC |
270 | } |
271 | ||
272 | /* | |
273 | Relocations for the H8 | |
274 | ||
275 | */ | |
3b4f1a5d | 276 | static bfd_reloc_status_type |
e89f2fbe SC |
277 | DEFUN(howto16_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section), |
278 | bfd *abfd AND | |
279 | arelent *reloc_entry AND | |
280 | asymbol *symbol_in AND | |
281 | unsigned char *data AND | |
282 | asection *ignore_input_section) | |
283 | { | |
284 | long relocation = 0; | |
285 | bfd_vma addr = reloc_entry->address; | |
286 | long x = bfd_get_16(abfd, (bfd_byte *)data + addr); | |
287 | ||
288 | HOWTO_PREPARE(relocation, symbol_in); | |
289 | ||
290 | x = (x + relocation + reloc_entry->addend); | |
291 | ||
292 | bfd_put_16(abfd, x, (bfd_byte *)data + addr); | |
293 | return bfd_reloc_ok; | |
294 | } | |
295 | ||
296 | ||
3b4f1a5d | 297 | static bfd_reloc_status_type |
e89f2fbe SC |
298 | DEFUN(howto8_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section), |
299 | bfd *abfd AND | |
300 | arelent *reloc_entry AND | |
301 | asymbol *symbol_in AND | |
302 | unsigned char *data AND | |
303 | asection *ignore_input_section) | |
304 | { | |
305 | long relocation = 0; | |
306 | bfd_vma addr = reloc_entry->address; | |
307 | long x = bfd_get_8(abfd, (bfd_byte *)data + addr); | |
308 | ||
309 | HOWTO_PREPARE(relocation, symbol_in); | |
310 | ||
311 | x = (x + relocation + reloc_entry->addend); | |
312 | ||
313 | bfd_put_8(abfd, x, (bfd_byte *)data + addr); | |
314 | return bfd_reloc_ok; | |
315 | } | |
316 | ||
317 | ||
3b4f1a5d | 318 | static bfd_reloc_status_type |
e89f2fbe SC |
319 | DEFUN(howto8_FFnn_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section), |
320 | bfd *abfd AND | |
321 | arelent *reloc_entry AND | |
322 | asymbol *symbol_in AND | |
323 | unsigned char *data AND | |
324 | asection *ignore_input_section) | |
325 | { | |
326 | long relocation = 0; | |
327 | bfd_vma addr = reloc_entry->address; | |
328 | ||
329 | long x = bfd_get_8(abfd, (bfd_byte *)data + addr); | |
330 | abort(); | |
331 | HOWTO_PREPARE(relocation, symbol_in); | |
332 | ||
333 | x = (x + relocation + reloc_entry->addend); | |
334 | ||
335 | bfd_put_8(abfd, x, (bfd_byte *)data + addr); | |
336 | return bfd_reloc_ok; | |
337 | } | |
338 | ||
3b4f1a5d | 339 | static bfd_reloc_status_type |
e89f2fbe SC |
340 | DEFUN(howto8_pcrel_callback,(abfd, reloc_entry, symbol_in, data, ignore_input_section), |
341 | bfd *abfd AND | |
342 | arelent *reloc_entry AND | |
343 | asymbol *symbol_in AND | |
344 | unsigned char *data AND | |
345 | asection *ignore_input_section) | |
346 | { | |
347 | long relocation = 0; | |
348 | bfd_vma addr = reloc_entry->address; | |
349 | long x = bfd_get_8(abfd, (bfd_byte *)data + addr); | |
350 | abort(); | |
351 | HOWTO_PREPARE(relocation, symbol_in); | |
352 | ||
353 | x = (x + relocation + reloc_entry->addend); | |
354 | ||
355 | bfd_put_8(abfd, x, (bfd_byte *)data + addr); | |
356 | return bfd_reloc_ok; | |
357 | } | |
358 | ||
359 | ||
360 | static reloc_howto_type howto_16 | |
b2c91bd9 | 361 | = NEWHOWTO(howto16_callback,"abs16",1,0,0); |
e89f2fbe | 362 | static reloc_howto_type howto_8 |
b2c91bd9 | 363 | = NEWHOWTO(howto8_callback,"abs8",0,0,0); |
e89f2fbe SC |
364 | |
365 | static reloc_howto_type howto_8_FFnn | |
b2c91bd9 | 366 | = NEWHOWTO(howto8_FFnn_callback,"ff00+abs8",0,0,0); |
e89f2fbe SC |
367 | |
368 | static reloc_howto_type howto_8_pcrel | |
b2c91bd9 | 369 | = NEWHOWTO(howto8_pcrel_callback,"pcrel8",0,1,1); |
e89f2fbe SC |
370 | |
371 | ||
372 | ||
b2c91bd9 SC |
373 | static CONST struct reloc_howto_struct * |
374 | DEFUN(local_bfd_reloc_type_lookup,(arch, code), | |
3b4f1a5d SC |
375 | CONST struct bfd_arch_info *arch AND |
376 | bfd_reloc_code_type code) | |
e89f2fbe SC |
377 | { |
378 | switch (code) { | |
379 | case BFD_RELOC_16: | |
380 | return &howto_16; | |
381 | case BFD_RELOC_8_FFnn: | |
382 | return &howto_8_FFnn; | |
383 | case BFD_RELOC_8: | |
384 | return &howto_8; | |
385 | case BFD_RELOC_8_PCREL: | |
386 | return &howto_8_pcrel; | |
387 | } | |
388 | return (reloc_howto_type *)NULL; | |
389 | } | |
390 | ||
391 | int bfd_default_scan_num_mach(); | |
392 | ||
b2c91bd9 SC |
393 | static boolean |
394 | DEFUN(h8300_scan,(info, string), | |
3b4f1a5d | 395 | CONST struct bfd_arch_info *info AND |
b2c91bd9 SC |
396 | CONST char *string) |
397 | { | |
398 | if (strcmp(string,"h8300") == 0) return true; | |
399 | if (strcmp(string,"H8300") == 0) return true; | |
400 | if (strcmp(string,"h8/300") == 0) return true; | |
401 | if (strcmp(string,"H8/300") == 0) return true; | |
402 | return false; | |
403 | } | |
3b4f1a5d SC |
404 | |
405 | static bfd_arch_info_type arch_info_struct = | |
e89f2fbe SC |
406 | { |
407 | 16, /* 16 bits in a word */ | |
408 | 16, /* 16 bits in an address */ | |
409 | 8, /* 8 bits in a byte */ | |
410 | bfd_arch_h8300, | |
411 | 0, /* only 1 machine */ | |
b2c91bd9 | 412 | "H8/300", /* arch_name */ |
e89f2fbe SC |
413 | "H8/300", /* printable name */ |
414 | true, /* the default machine */ | |
415 | bfd_default_compatible, | |
b2c91bd9 | 416 | h8300_scan, |
e89f2fbe SC |
417 | print_insn_h8300, |
418 | local_bfd_reloc_type_lookup, | |
419 | 0, | |
420 | }; | |
421 | ||
3b4f1a5d SC |
422 | void |
423 | DEFUN_VOID(bfd_h8300_arch) | |
e89f2fbe SC |
424 | { |
425 | bfd_arch_linkin(&arch_info_struct); | |
426 | } |