Commit | Line | Data |
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bfc10abe DE |
1 | /* Disassembler interface for targets using CGEN. -*- C -*- |
2 | CGEN: Cpu tools GENerator | |
3 | ||
1c8f439e | 4 | THIS FILE IS USED TO GENERATE @prefix@-dis.c. |
bfc10abe | 5 | |
1c8f439e | 6 | Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
bfc10abe DE |
7 | |
8 | This file is part of the GNU Binutils and GDB, the GNU debugger. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
1c8f439e DE |
21 | along with this program; if not, write to the Free Software Foundation, Inc., |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
bfc10abe DE |
23 | |
24 | #include "sysdep.h" | |
25 | #include <stdio.h> | |
26 | #include "ansidecl.h" | |
27 | #include "dis-asm.h" | |
28 | #include "bfd.h" | |
833d2990 | 29 | #include "symcat.h" |
1c8f439e DE |
30 | #include "@prefix@-opc.h" |
31 | #include "opintl.h" | |
bfc10abe | 32 | |
1c8f439e DE |
33 | #undef INLINE |
34 | #ifdef __GNUC__ | |
35 | #define INLINE __inline__ | |
36 | #else | |
37 | #define INLINE | |
bfc10abe DE |
38 | #endif |
39 | ||
1c8f439e DE |
40 | /* Default text to print if an instruction isn't recognized. */ |
41 | #define UNKNOWN_INSN_MSG _("*unknown*") | |
42 | ||
43 | static int extract_normal | |
44 | PARAMS ((CGEN_OPCODE_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_BYTES, | |
45 | unsigned int, int, int, int, long *)); | |
46 | static void print_normal | |
47 | PARAMS ((CGEN_OPCODE_DESC, PTR, long, unsigned int, bfd_vma, int)); | |
48 | static void print_address | |
49 | PARAMS ((CGEN_OPCODE_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int)); | |
50 | static void print_keyword | |
51 | PARAMS ((CGEN_OPCODE_DESC, PTR, CGEN_KEYWORD *, long, unsigned int)); | |
bfc10abe | 52 | static int extract_insn_normal |
1c8f439e DE |
53 | PARAMS ((CGEN_OPCODE_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, |
54 | unsigned long, CGEN_FIELDS *, bfd_vma)); | |
bfc10abe | 55 | static void print_insn_normal |
1c8f439e DE |
56 | PARAMS ((CGEN_OPCODE_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *, |
57 | bfd_vma, int)); | |
58 | static int print_insn PARAMS ((CGEN_OPCODE_DESC, bfd_vma, | |
59 | disassemble_info *, char *, int)); | |
60 | static int default_print_insn | |
61 | PARAMS ((CGEN_OPCODE_DESC, bfd_vma, disassemble_info *)); | |
62 | \f | |
63 | /* -- disassembler routines inserted here */ | |
bfc10abe | 64 | \f |
1c8f439e DE |
65 | #if ! CGEN_INT_INSN_P |
66 | ||
67 | /* Subroutine of extract_normal. */ | |
68 | ||
69 | static INLINE long | |
70 | extract_1 (od, ex_info, start, length, word_length, bufp) | |
71 | CGEN_OPCODE_DESC od; | |
72 | CGEN_EXTRACT_INFO *info; | |
73 | int start,length,word_length; | |
74 | unsigned char *bufp; | |
75 | { | |
76 | unsigned long x,mask; | |
77 | int shift; | |
78 | int big_p = CGEN_OPCODE_INSN_ENDIAN (od) == CGEN_ENDIAN_BIG; | |
79 | ||
80 | /* FIXME: Need to use ex_info to ensure bytes have been fetched. */ | |
81 | ||
82 | switch (word_length) | |
83 | { | |
84 | case 8: | |
85 | x = *bufp; | |
86 | break; | |
87 | case 16: | |
88 | if (big_p) | |
89 | x = bfd_getb16 (bufp); | |
90 | else | |
91 | x = bfd_getl16 (bufp); | |
92 | break; | |
93 | case 24: | |
94 | /* ??? This may need reworking as these cases don't necessarily | |
95 | want the first byte and the last two bytes handled like this. */ | |
96 | if (big_p) | |
97 | x = (bfd_getb8 (bufp) << 16) | bfd_getb16 (bufp + 1); | |
98 | else | |
99 | x = bfd_getl16 (bufp) | (bfd_getb8 (bufp + 2) << 16); | |
100 | break; | |
101 | case 32: | |
102 | if (big_p) | |
103 | x = bfd_getb32 (bufp); | |
104 | else | |
105 | x = bfd_getl32 (bufp); | |
106 | break; | |
107 | default : | |
108 | abort (); | |
109 | } | |
110 | ||
111 | /* Written this way to avoid undefined behaviour. */ | |
112 | mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
113 | if (CGEN_INSN_LSB0_P) | |
114 | shift = start; | |
115 | else | |
116 | shift = (word_length - (start + length)); | |
117 | return (x >> shift) & mask; | |
118 | } | |
119 | ||
120 | #endif /* ! CGEN_INT_INSN_P */ | |
121 | ||
bfc10abe DE |
122 | /* Default extraction routine. |
123 | ||
124 | ATTRS is a mask of the boolean attributes. We only need `unsigned', | |
125 | but for generality we take a bitmask of all of them. */ | |
126 | ||
1c8f439e DE |
127 | /* ??? This doesn't handle bfd_vma's. Create another function when |
128 | necessary. */ | |
129 | ||
bfc10abe | 130 | static int |
1c8f439e DE |
131 | extract_normal (od, ex_info, insn_value, attrs, start, length, total_length, valuep) |
132 | CGEN_OPCODE_DESC od; | |
133 | CGEN_EXTRACT_INFO *ex_info; | |
134 | CGEN_INSN_BYTES insn_value; | |
bfc10abe | 135 | unsigned int attrs; |
1c8f439e | 136 | int start, length, total_length; |
bfc10abe DE |
137 | long *valuep; |
138 | { | |
1c8f439e DE |
139 | unsigned long value; |
140 | ||
141 | /* If LENGTH is zero, this operand doesn't contribute to the value | |
142 | so give it a standard value of zero. */ | |
143 | if (length == 0) | |
144 | { | |
145 | *valuep = 0; | |
146 | return 1; | |
147 | } | |
148 | ||
149 | #if CGEN_INT_INSN_P | |
150 | ||
151 | { | |
152 | /* Written this way to avoid undefined behaviour. */ | |
153 | unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
154 | ||
155 | if (CGEN_INSN_LSB0_P) | |
156 | value = insn_value >> start; | |
157 | else | |
158 | value = insn_value >> (total_length - (start + length)); | |
159 | value &= mask; | |
160 | /* sign extend? */ | |
161 | if (! (attrs & CGEN_ATTR_MASK (CGEN_OPERAND_UNSIGNED)) | |
162 | && (value & (1L << (length - 1)))) | |
163 | value |= ~mask; | |
164 | } | |
bfc10abe | 165 | |
bfc10abe | 166 | #else |
bfc10abe | 167 | |
1c8f439e DE |
168 | /* The hard case is probably too slow for the normal cases. |
169 | It's certainly more difficult to understand than the normal case. | |
170 | Thus this is split into two. Keep it that way. The hard case is defined | |
171 | to be when a field straddles a (loosely defined) word boundary | |
172 | (??? which may require target specific help to determine). */ | |
173 | ||
174 | #if 0 /*wip*/ | |
175 | ||
176 | #define HARD_CASE_P 0 /* FIXME:wip */ | |
177 | ||
178 | if (HARD_CASE_P) | |
179 | { | |
180 | } | |
181 | #endif | |
bfc10abe | 182 | else |
1c8f439e DE |
183 | { |
184 | unsigned char *bufp = (unsigned char *) insn_value; | |
185 | ||
186 | if (length > 32) | |
187 | abort (); | |
188 | ||
189 | /* Adjust start,total_length,bufp to point to the pseudo-word that holds | |
190 | the value. For example in a 48 bit insn where the value to insert | |
191 | (say an immediate value) is the last 16 bits then word_length here | |
192 | would be 16. To handle a 24 bit insn with an 18 bit immediate, | |
193 | extract_1 handles 24 bits (using a combination of bfd_get8,16). */ | |
194 | ||
195 | if (total_length > 32) | |
196 | { | |
197 | int needed_width = start % 8 + length; | |
198 | int fetch_length = (needed_width <= 8 ? 8 | |
199 | : needed_width <= 16 ? 16 | |
200 | : 32); | |
201 | ||
202 | if (CGEN_INSN_LSB0_P) | |
203 | { | |
204 | if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG) | |
205 | { | |
206 | abort (); /* wip */ | |
207 | } | |
208 | else | |
209 | { | |
210 | int offset = start & ~7; | |
211 | ||
212 | bufp += offset / 8; | |
213 | start -= offset; | |
214 | total_length -= offset; | |
215 | } | |
216 | } | |
217 | else | |
218 | { | |
219 | if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG) | |
220 | { | |
221 | int offset = start & ~7; | |
222 | ||
223 | bufp += offset / 8; | |
224 | start -= offset; | |
225 | total_length -= offset; | |
226 | } | |
227 | else | |
228 | { | |
229 | abort (); /* wip */ | |
230 | } | |
231 | } | |
232 | } | |
233 | ||
234 | /* FIXME: which bytes are being extracted have been lost. */ | |
235 | value = extract_1 (od, ex_info, start, length, total_length, bufp); | |
236 | } | |
237 | ||
238 | #endif /* ! CGEN_INT_INSN_P */ | |
bfc10abe DE |
239 | |
240 | *valuep = value; | |
833d2990 DE |
241 | |
242 | /* FIXME: for now */ | |
bfc10abe DE |
243 | return 1; |
244 | } | |
245 | ||
246 | /* Default print handler. */ | |
247 | ||
248 | static void | |
1c8f439e DE |
249 | print_normal (od, dis_info, value, attrs, pc, length) |
250 | CGEN_OPCODE_DESC od; | |
ab0bd049 | 251 | PTR dis_info; |
bfc10abe DE |
252 | long value; |
253 | unsigned int attrs; | |
1c8f439e | 254 | bfd_vma pc; |
bfc10abe DE |
255 | int length; |
256 | { | |
1c8f439e DE |
257 | disassemble_info *info = (disassemble_info *) dis_info; |
258 | ||
259 | #ifdef CGEN_PRINT_NORMAL | |
260 | CGEN_PRINT_NORMAL (od, info, value, attrs, pc, length); | |
261 | #endif | |
bfc10abe DE |
262 | |
263 | /* Print the operand as directed by the attributes. */ | |
1c8f439e DE |
264 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) |
265 | ; /* nothing to do */ | |
266 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_UNSIGNED)) | |
bfc10abe DE |
267 | (*info->fprintf_func) (info->stream, "0x%lx", value); |
268 | else | |
269 | (*info->fprintf_func) (info->stream, "%ld", value); | |
270 | } | |
271 | ||
1c8f439e DE |
272 | /* Default address handler. */ |
273 | ||
274 | static void | |
275 | print_address (od, dis_info, value, attrs, pc, length) | |
276 | CGEN_OPCODE_DESC od; | |
277 | PTR dis_info; | |
278 | bfd_vma value; | |
279 | unsigned int attrs; | |
280 | bfd_vma pc; | |
281 | int length; | |
282 | { | |
283 | disassemble_info *info = (disassemble_info *) dis_info; | |
284 | ||
285 | #ifdef CGEN_PRINT_ADDRESS | |
286 | CGEN_PRINT_ADDRESS (od, info, value, attrs, pc, length); | |
287 | #endif | |
288 | ||
289 | /* Print the operand as directed by the attributes. */ | |
290 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) | |
291 | ; /* nothing to do */ | |
292 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) | |
293 | (*info->print_address_func) (value, info); | |
294 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) | |
295 | (*info->print_address_func) (value, info); | |
296 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_UNSIGNED)) | |
297 | (*info->fprintf_func) (info->stream, "0x%lx", (long) value); | |
298 | else | |
299 | (*info->fprintf_func) (info->stream, "%ld", (long) value); | |
300 | } | |
301 | ||
bfc10abe DE |
302 | /* Keyword print handler. */ |
303 | ||
304 | static void | |
1c8f439e DE |
305 | print_keyword (od, dis_info, keyword_table, value, attrs) |
306 | CGEN_OPCODE_DESC od; | |
ab0bd049 | 307 | PTR dis_info; |
bfc10abe DE |
308 | CGEN_KEYWORD *keyword_table; |
309 | long value; | |
1c8f439e | 310 | unsigned int attrs; |
bfc10abe | 311 | { |
1c8f439e | 312 | disassemble_info *info = (disassemble_info *) dis_info; |
bfc10abe DE |
313 | const CGEN_KEYWORD_ENTRY *ke; |
314 | ||
315 | ke = cgen_keyword_lookup_value (keyword_table, value); | |
316 | if (ke != NULL) | |
317 | (*info->fprintf_func) (info->stream, "%s", ke->name); | |
318 | else | |
319 | (*info->fprintf_func) (info->stream, "???"); | |
320 | } | |
321 | \f | |
bfc10abe DE |
322 | /* Default insn extractor. |
323 | ||
1c8f439e DE |
324 | INSN_VALUE is the first CGEN_BASE_INSN_SIZE bytes, translated to host order. |
325 | The extracted fields are stored in FIELDS. | |
326 | EX_INFO is used to handle reading variable length insns. | |
327 | Return the length of the insn in bits, or 0 if no match, | |
328 | or -1 if an error occurs fetching data (memory_error_func will have | |
329 | been called). */ | |
bfc10abe DE |
330 | |
331 | static int | |
1c8f439e DE |
332 | extract_insn_normal (od, insn, ex_info, insn_value, fields, pc) |
333 | CGEN_OPCODE_DESC od; | |
bfc10abe | 334 | const CGEN_INSN *insn; |
1c8f439e DE |
335 | CGEN_EXTRACT_INFO *ex_info; |
336 | unsigned long insn_value; | |
bfc10abe | 337 | CGEN_FIELDS *fields; |
1c8f439e | 338 | bfd_vma pc; |
bfc10abe DE |
339 | { |
340 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
341 | const unsigned char *syn; | |
342 | ||
343 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
344 | ||
1c8f439e | 345 | CGEN_INIT_EXTRACT (od); |
bfc10abe DE |
346 | |
347 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
348 | { | |
349 | int length; | |
350 | ||
351 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
352 | continue; | |
353 | ||
1c8f439e DE |
354 | length = @arch@_cgen_extract_operand (od, CGEN_SYNTAX_FIELD (*syn), |
355 | ex_info, insn_value, fields, pc); | |
356 | if (length <= 0) | |
357 | return length; | |
bfc10abe DE |
358 | } |
359 | ||
360 | /* We recognized and successfully extracted this insn. */ | |
361 | return CGEN_INSN_BITSIZE (insn); | |
362 | } | |
363 | ||
364 | /* Default insn printer. | |
365 | ||
ab0bd049 | 366 | DIS_INFO is defined as `PTR' so the disassembler needn't know anything |
1c8f439e | 367 | about disassemble_info. */ |
bfc10abe DE |
368 | |
369 | static void | |
1c8f439e DE |
370 | print_insn_normal (od, dis_info, insn, fields, pc, length) |
371 | CGEN_OPCODE_DESC od; | |
ab0bd049 | 372 | PTR dis_info; |
bfc10abe DE |
373 | const CGEN_INSN *insn; |
374 | CGEN_FIELDS *fields; | |
375 | bfd_vma pc; | |
376 | int length; | |
377 | { | |
378 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
1c8f439e | 379 | disassemble_info *info = (disassemble_info *) dis_info; |
bfc10abe DE |
380 | const unsigned char *syn; |
381 | ||
1c8f439e | 382 | CGEN_INIT_PRINT (od); |
bfc10abe DE |
383 | |
384 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
385 | { | |
386 | if (CGEN_SYNTAX_MNEMONIC_P (*syn)) | |
387 | { | |
388 | (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); | |
389 | continue; | |
390 | } | |
391 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
392 | { | |
393 | (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); | |
394 | continue; | |
395 | } | |
396 | ||
397 | /* We have an operand. */ | |
1c8f439e DE |
398 | @arch@_cgen_print_operand (od, CGEN_SYNTAX_FIELD (*syn), info, |
399 | fields, CGEN_INSN_ATTRS (insn), pc, length); | |
bfc10abe DE |
400 | } |
401 | } | |
402 | \f | |
1c8f439e DE |
403 | /* Utility to print an insn. |
404 | BUF is the base part of the insn, target byte order, BUFLEN bytes long. | |
405 | The result is the size of the insn in bytes or zero for an unknown insn | |
406 | or -1 if an error occurs fetching data (memory_error_func will have | |
407 | been called). */ | |
bfc10abe DE |
408 | |
409 | static int | |
1c8f439e DE |
410 | print_insn (od, pc, info, buf, buflen) |
411 | CGEN_OPCODE_DESC od; | |
bfc10abe DE |
412 | bfd_vma pc; |
413 | disassemble_info *info; | |
414 | char *buf; | |
415 | int buflen; | |
416 | { | |
bfc10abe DE |
417 | unsigned long insn_value; |
418 | const CGEN_INSN_LIST *insn_list; | |
1c8f439e DE |
419 | CGEN_EXTRACT_INFO ex_info; |
420 | ||
421 | ex_info.dis_info = info; | |
422 | ex_info.valid = (1 << CGEN_BASE_INSN_SIZE) - 1; | |
423 | ex_info.bytes = buf; | |
bfc10abe DE |
424 | |
425 | switch (buflen) | |
426 | { | |
1c8f439e | 427 | case 1: |
bfc10abe DE |
428 | insn_value = buf[0]; |
429 | break; | |
1c8f439e | 430 | case 2: |
bfc10abe DE |
431 | insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb16 (buf) : bfd_getl16 (buf); |
432 | break; | |
1c8f439e | 433 | case 4: |
bfc10abe DE |
434 | insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb32 (buf) : bfd_getl32 (buf); |
435 | break; | |
436 | default: | |
437 | abort (); | |
438 | } | |
439 | ||
440 | /* The instructions are stored in hash lists. | |
441 | Pick the first one and keep trying until we find the right one. */ | |
442 | ||
1c8f439e | 443 | insn_list = CGEN_DIS_LOOKUP_INSN (od, buf, insn_value); |
bfc10abe DE |
444 | while (insn_list != NULL) |
445 | { | |
446 | const CGEN_INSN *insn = insn_list->insn; | |
bfc10abe DE |
447 | CGEN_FIELDS fields; |
448 | int length; | |
449 | ||
450 | #if 0 /* not needed as insn shouldn't be in hash lists if not supported */ | |
451 | /* Supported by this cpu? */ | |
1c8f439e | 452 | if (! @arch@_cgen_insn_supported (od, insn)) |
bfc10abe DE |
453 | continue; |
454 | #endif | |
455 | ||
456 | /* Basic bit mask must be correct. */ | |
457 | /* ??? May wish to allow target to defer this check until the extract | |
458 | handler. */ | |
459 | if ((insn_value & CGEN_INSN_MASK (insn)) == CGEN_INSN_VALUE (insn)) | |
460 | { | |
461 | /* Printing is handled in two passes. The first pass parses the | |
462 | machine insn and extracts the fields. The second pass prints | |
463 | them. */ | |
464 | ||
1c8f439e DE |
465 | length = (*CGEN_EXTRACT_FN (insn)) (od, insn, &ex_info, insn_value, |
466 | &fields, pc); | |
467 | /* length < 0 -> error */ | |
468 | if (length < 0) | |
469 | return length; | |
bfc10abe DE |
470 | if (length > 0) |
471 | { | |
1c8f439e | 472 | (*CGEN_PRINT_FN (insn)) (od, info, insn, &fields, pc, length); |
bfc10abe DE |
473 | /* length is in bits, result is in bytes */ |
474 | return length / 8; | |
475 | } | |
476 | } | |
477 | ||
478 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); | |
479 | } | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
1c8f439e DE |
484 | /* Default value for CGEN_PRINT_INSN. |
485 | The result is the size of the insn in bytes or zero for an unknown insn | |
486 | or -1 if an error occured fetching bytes. */ | |
487 | ||
488 | #ifndef CGEN_PRINT_INSN | |
489 | #define CGEN_PRINT_INSN default_print_insn | |
490 | #endif | |
491 | ||
492 | static int | |
493 | default_print_insn (od, pc, info) | |
494 | CGEN_OPCODE_DESC od; | |
495 | bfd_vma pc; | |
496 | disassemble_info *info; | |
497 | { | |
498 | char buf[CGEN_MAX_INSN_SIZE]; | |
499 | int status; | |
500 | ||
501 | /* Read the base part of the insn. */ | |
502 | ||
503 | status = (*info->read_memory_func) (pc, buf, CGEN_BASE_INSN_SIZE, info); | |
504 | if (status != 0) | |
505 | { | |
506 | (*info->memory_error_func) (status, pc, info); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | return print_insn (od, pc, info, buf, CGEN_BASE_INSN_SIZE); | |
511 | } | |
512 | ||
bfc10abe DE |
513 | /* Main entry point. |
514 | Print one instruction from PC on INFO->STREAM. | |
515 | Return the size of the instruction (in bytes). */ | |
516 | ||
517 | int | |
518 | print_insn_@arch@ (pc, info) | |
519 | bfd_vma pc; | |
520 | disassemble_info *info; | |
521 | { | |
1c8f439e DE |
522 | int length; |
523 | static CGEN_OPCODE_DESC od = 0; | |
bfc10abe DE |
524 | int mach = info->mach; |
525 | int big_p = info->endian == BFD_ENDIAN_BIG; | |
526 | ||
1c8f439e DE |
527 | /* If we haven't initialized yet, initialize the opcode table. */ |
528 | if (! od) | |
bfc10abe | 529 | { |
1c8f439e DE |
530 | od = @arch@_cgen_opcode_open (mach, |
531 | big_p ? | |
532 | CGEN_ENDIAN_BIG | |
533 | : CGEN_ENDIAN_LITTLE); | |
534 | @arch@_cgen_init_dis (od); | |
bfc10abe | 535 | } |
1c8f439e DE |
536 | /* If we've switched cpu's, re-initialize. */ |
537 | /* ??? Perhaps we should use BFD_ENDIAN. */ | |
538 | else if (mach != CGEN_OPCODE_MACH (od) | |
539 | || (CGEN_OPCODE_ENDIAN (od) | |
540 | != (big_p ? CGEN_ENDIAN_BIG : CGEN_ENDIAN_LITTLE))) | |
bfc10abe | 541 | { |
1c8f439e | 542 | cgen_set_cpu (od, mach, big_p ? CGEN_ENDIAN_BIG : CGEN_ENDIAN_LITTLE); |
bfc10abe DE |
543 | } |
544 | ||
545 | /* We try to have as much common code as possible. | |
546 | But at this point some targets need to take over. */ | |
547 | /* ??? Some targets may need a hook elsewhere. Try to avoid this, | |
548 | but if not possible try to move this hook elsewhere rather than | |
549 | have two hooks. */ | |
1c8f439e DE |
550 | length = CGEN_PRINT_INSN (od, pc, info); |
551 | if (length > 0) | |
bfc10abe | 552 | return length; |
1c8f439e DE |
553 | if (length < 0) |
554 | return -1; | |
bfc10abe DE |
555 | |
556 | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); | |
557 | return CGEN_DEFAULT_INSN_SIZE; | |
558 | } |