* cgen-dis.in: Include libiberty.h.
[binutils.git] / opcodes / fr30-dis.c
blobef7b37a5a24f10484fd177dd4b1b7be191f79eae
1 /* Disassembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-dis.in isn't
7 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
8 Free Software Foundation, Inc.
10 This file is part of the GNU Binutils and GDB, the GNU debugger.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
15 any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software Foundation, Inc.,
24 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
27 Keep that in mind. */
29 #include "sysdep.h"
30 #include <stdio.h>
31 #include "ansidecl.h"
32 #include "dis-asm.h"
33 #include "bfd.h"
34 #include "symcat.h"
35 #include "libiberty.h"
36 #include "fr30-desc.h"
37 #include "fr30-opc.h"
38 #include "opintl.h"
40 /* Default text to print if an instruction isn't recognized. */
41 #define UNKNOWN_INSN_MSG _("*unknown*")
43 static void print_normal
44 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int));
45 static void print_address
46 PARAMS ((CGEN_CPU_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int));
47 static void print_keyword
48 PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int));
49 static void print_insn_normal
50 PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
51 bfd_vma, int));
52 static int print_insn
53 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned));
54 static int default_print_insn
55 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
56 static int read_insn
57 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int,
58 CGEN_EXTRACT_INFO *, unsigned long *));
60 /* -- disassembler routines inserted here */
62 /* -- dis.c */
63 static void print_register_list
64 PARAMS ((PTR, long, long, int));
65 static void print_hi_register_list_ld
66 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
67 static void print_low_register_list_ld
68 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
69 static void print_hi_register_list_st
70 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
71 static void print_low_register_list_st
72 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
73 static void print_m4
74 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
76 static void
77 print_register_list (dis_info, value, offset, load_store)
78 PTR dis_info;
79 long value;
80 long offset;
81 int load_store; /* 0 == load, 1 == store */
83 disassemble_info *info = dis_info;
84 int mask;
85 int index = 0;
86 char* comma = "";
88 if (load_store)
89 mask = 0x80;
90 else
91 mask = 1;
93 if (value & mask)
95 (*info->fprintf_func) (info->stream, "r%i", index + offset);
96 comma = ",";
99 for (index = 1; index <= 7; ++index)
101 if (load_store)
102 mask >>= 1;
103 else
104 mask <<= 1;
106 if (value & mask)
108 (*info->fprintf_func) (info->stream, "%sr%i", comma, index + offset);
109 comma = ",";
114 static void
115 print_hi_register_list_ld (cd, dis_info, value, attrs, pc, length)
116 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
117 PTR dis_info;
118 long value;
119 unsigned int attrs ATTRIBUTE_UNUSED;
120 bfd_vma pc ATTRIBUTE_UNUSED;
121 int length ATTRIBUTE_UNUSED;
123 print_register_list (dis_info, value, 8, 0/*load*/);
126 static void
127 print_low_register_list_ld (cd, dis_info, value, attrs, pc, length)
128 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
129 PTR dis_info;
130 long value;
131 unsigned int attrs ATTRIBUTE_UNUSED;
132 bfd_vma pc ATTRIBUTE_UNUSED;
133 int length ATTRIBUTE_UNUSED;
135 print_register_list (dis_info, value, 0, 0/*load*/);
138 static void
139 print_hi_register_list_st (cd, dis_info, value, attrs, pc, length)
140 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
141 PTR dis_info;
142 long value;
143 unsigned int attrs ATTRIBUTE_UNUSED;
144 bfd_vma pc ATTRIBUTE_UNUSED;
145 int length ATTRIBUTE_UNUSED;
147 print_register_list (dis_info, value, 8, 1/*store*/);
150 static void
151 print_low_register_list_st (cd, dis_info, value, attrs, pc, length)
152 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
153 PTR dis_info;
154 long value;
155 unsigned int attrs ATTRIBUTE_UNUSED;
156 bfd_vma pc ATTRIBUTE_UNUSED;
157 int length ATTRIBUTE_UNUSED;
159 print_register_list (dis_info, value, 0, 1/*store*/);
162 static void
163 print_m4 (cd, dis_info, value, attrs, pc, length)
164 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
165 PTR dis_info;
166 long value;
167 unsigned int attrs ATTRIBUTE_UNUSED;
168 bfd_vma pc ATTRIBUTE_UNUSED;
169 int length ATTRIBUTE_UNUSED;
171 disassemble_info *info = (disassemble_info *) dis_info;
172 (*info->fprintf_func) (info->stream, "%ld", value);
174 /* -- */
176 void fr30_cgen_print_operand
177 PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *,
178 void const *, bfd_vma, int));
180 /* Main entry point for printing operands.
181 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
182 of dis-asm.h on cgen.h.
184 This function is basically just a big switch statement. Earlier versions
185 used tables to look up the function to use, but
186 - if the table contains both assembler and disassembler functions then
187 the disassembler contains much of the assembler and vice-versa,
188 - there's a lot of inlining possibilities as things grow,
189 - using a switch statement avoids the function call overhead.
191 This function could be moved into `print_insn_normal', but keeping it
192 separate makes clear the interface between `print_insn_normal' and each of
193 the handlers. */
195 void
196 fr30_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
197 CGEN_CPU_DESC cd;
198 int opindex;
199 PTR xinfo;
200 CGEN_FIELDS *fields;
201 void const *attrs ATTRIBUTE_UNUSED;
202 bfd_vma pc;
203 int length;
205 disassemble_info *info = (disassemble_info *) xinfo;
207 switch (opindex)
209 case FR30_OPERAND_CRI :
210 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRi, 0);
211 break;
212 case FR30_OPERAND_CRJ :
213 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRj, 0);
214 break;
215 case FR30_OPERAND_R13 :
216 print_keyword (cd, info, & fr30_cgen_opval_h_r13, 0, 0);
217 break;
218 case FR30_OPERAND_R14 :
219 print_keyword (cd, info, & fr30_cgen_opval_h_r14, 0, 0);
220 break;
221 case FR30_OPERAND_R15 :
222 print_keyword (cd, info, & fr30_cgen_opval_h_r15, 0, 0);
223 break;
224 case FR30_OPERAND_RI :
225 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ri, 0);
226 break;
227 case FR30_OPERAND_RIC :
228 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ric, 0);
229 break;
230 case FR30_OPERAND_RJ :
231 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rj, 0);
232 break;
233 case FR30_OPERAND_RJC :
234 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rjc, 0);
235 break;
236 case FR30_OPERAND_RS1 :
237 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs1, 0);
238 break;
239 case FR30_OPERAND_RS2 :
240 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs2, 0);
241 break;
242 case FR30_OPERAND_CC :
243 print_normal (cd, info, fields->f_cc, 0, pc, length);
244 break;
245 case FR30_OPERAND_CCC :
246 print_normal (cd, info, fields->f_ccc, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
247 break;
248 case FR30_OPERAND_DIR10 :
249 print_normal (cd, info, fields->f_dir10, 0, pc, length);
250 break;
251 case FR30_OPERAND_DIR8 :
252 print_normal (cd, info, fields->f_dir8, 0, pc, length);
253 break;
254 case FR30_OPERAND_DIR9 :
255 print_normal (cd, info, fields->f_dir9, 0, pc, length);
256 break;
257 case FR30_OPERAND_DISP10 :
258 print_normal (cd, info, fields->f_disp10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
259 break;
260 case FR30_OPERAND_DISP8 :
261 print_normal (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
262 break;
263 case FR30_OPERAND_DISP9 :
264 print_normal (cd, info, fields->f_disp9, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
265 break;
266 case FR30_OPERAND_I20 :
267 print_normal (cd, info, fields->f_i20, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
268 break;
269 case FR30_OPERAND_I32 :
270 print_normal (cd, info, fields->f_i32, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
271 break;
272 case FR30_OPERAND_I8 :
273 print_normal (cd, info, fields->f_i8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
274 break;
275 case FR30_OPERAND_LABEL12 :
276 print_address (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
277 break;
278 case FR30_OPERAND_LABEL9 :
279 print_address (cd, info, fields->f_rel9, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
280 break;
281 case FR30_OPERAND_M4 :
282 print_m4 (cd, info, fields->f_m4, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
283 break;
284 case FR30_OPERAND_PS :
285 print_keyword (cd, info, & fr30_cgen_opval_h_ps, 0, 0);
286 break;
287 case FR30_OPERAND_REGLIST_HI_LD :
288 print_hi_register_list_ld (cd, info, fields->f_reglist_hi_ld, 0, pc, length);
289 break;
290 case FR30_OPERAND_REGLIST_HI_ST :
291 print_hi_register_list_st (cd, info, fields->f_reglist_hi_st, 0, pc, length);
292 break;
293 case FR30_OPERAND_REGLIST_LOW_LD :
294 print_low_register_list_ld (cd, info, fields->f_reglist_low_ld, 0, pc, length);
295 break;
296 case FR30_OPERAND_REGLIST_LOW_ST :
297 print_low_register_list_st (cd, info, fields->f_reglist_low_st, 0, pc, length);
298 break;
299 case FR30_OPERAND_S10 :
300 print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
301 break;
302 case FR30_OPERAND_U10 :
303 print_normal (cd, info, fields->f_u10, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
304 break;
305 case FR30_OPERAND_U4 :
306 print_normal (cd, info, fields->f_u4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
307 break;
308 case FR30_OPERAND_U4C :
309 print_normal (cd, info, fields->f_u4c, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
310 break;
311 case FR30_OPERAND_U8 :
312 print_normal (cd, info, fields->f_u8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
313 break;
314 case FR30_OPERAND_UDISP6 :
315 print_normal (cd, info, fields->f_udisp6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
316 break;
318 default :
319 /* xgettext:c-format */
320 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
321 opindex);
322 abort ();
326 cgen_print_fn * const fr30_cgen_print_handlers[] =
328 print_insn_normal,
332 void
333 fr30_cgen_init_dis (cd)
334 CGEN_CPU_DESC cd;
336 fr30_cgen_init_opcode_table (cd);
337 fr30_cgen_init_ibld_table (cd);
338 cd->print_handlers = & fr30_cgen_print_handlers[0];
339 cd->print_operand = fr30_cgen_print_operand;
343 /* Default print handler. */
345 static void
346 print_normal (cd, dis_info, value, attrs, pc, length)
347 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
348 PTR dis_info;
349 long value;
350 unsigned int attrs;
351 bfd_vma pc ATTRIBUTE_UNUSED;
352 int length ATTRIBUTE_UNUSED;
354 disassemble_info *info = (disassemble_info *) dis_info;
356 #ifdef CGEN_PRINT_NORMAL
357 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
358 #endif
360 /* Print the operand as directed by the attributes. */
361 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
362 ; /* nothing to do */
363 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
364 (*info->fprintf_func) (info->stream, "%ld", value);
365 else
366 (*info->fprintf_func) (info->stream, "0x%lx", value);
369 /* Default address handler. */
371 static void
372 print_address (cd, dis_info, value, attrs, pc, length)
373 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
374 PTR dis_info;
375 bfd_vma value;
376 unsigned int attrs;
377 bfd_vma pc ATTRIBUTE_UNUSED;
378 int length ATTRIBUTE_UNUSED;
380 disassemble_info *info = (disassemble_info *) dis_info;
382 #ifdef CGEN_PRINT_ADDRESS
383 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
384 #endif
386 /* Print the operand as directed by the attributes. */
387 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
388 ; /* nothing to do */
389 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
390 (*info->print_address_func) (value, info);
391 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
392 (*info->print_address_func) (value, info);
393 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
394 (*info->fprintf_func) (info->stream, "%ld", (long) value);
395 else
396 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
399 /* Keyword print handler. */
401 static void
402 print_keyword (cd, dis_info, keyword_table, value, attrs)
403 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
404 PTR dis_info;
405 CGEN_KEYWORD *keyword_table;
406 long value;
407 unsigned int attrs ATTRIBUTE_UNUSED;
409 disassemble_info *info = (disassemble_info *) dis_info;
410 const CGEN_KEYWORD_ENTRY *ke;
412 ke = cgen_keyword_lookup_value (keyword_table, value);
413 if (ke != NULL)
414 (*info->fprintf_func) (info->stream, "%s", ke->name);
415 else
416 (*info->fprintf_func) (info->stream, "???");
419 /* Default insn printer.
421 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
422 about disassemble_info. */
424 static void
425 print_insn_normal (cd, dis_info, insn, fields, pc, length)
426 CGEN_CPU_DESC cd;
427 PTR dis_info;
428 const CGEN_INSN *insn;
429 CGEN_FIELDS *fields;
430 bfd_vma pc;
431 int length;
433 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
434 disassemble_info *info = (disassemble_info *) dis_info;
435 const CGEN_SYNTAX_CHAR_TYPE *syn;
437 CGEN_INIT_PRINT (cd);
439 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
441 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
443 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
444 continue;
446 if (CGEN_SYNTAX_CHAR_P (*syn))
448 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
449 continue;
452 /* We have an operand. */
453 fr30_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
454 fields, CGEN_INSN_ATTRS (insn), pc, length);
458 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
459 the extract info.
460 Returns 0 if all is well, non-zero otherwise. */
462 static int
463 read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
464 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
465 bfd_vma pc;
466 disassemble_info *info;
467 char *buf;
468 int buflen;
469 CGEN_EXTRACT_INFO *ex_info;
470 unsigned long *insn_value;
472 int status = (*info->read_memory_func) (pc, buf, buflen, info);
473 if (status != 0)
475 (*info->memory_error_func) (status, pc, info);
476 return -1;
479 ex_info->dis_info = info;
480 ex_info->valid = (1 << buflen) - 1;
481 ex_info->insn_bytes = buf;
483 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
484 return 0;
487 /* Utility to print an insn.
488 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
489 The result is the size of the insn in bytes or zero for an unknown insn
490 or -1 if an error occurs fetching data (memory_error_func will have
491 been called). */
493 static int
494 print_insn (cd, pc, info, buf, buflen)
495 CGEN_CPU_DESC cd;
496 bfd_vma pc;
497 disassemble_info *info;
498 char *buf;
499 unsigned int buflen;
501 CGEN_INSN_INT insn_value;
502 const CGEN_INSN_LIST *insn_list;
503 CGEN_EXTRACT_INFO ex_info;
504 int basesize;
506 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
507 basesize = cd->base_insn_bitsize < buflen * 8 ?
508 cd->base_insn_bitsize : buflen * 8;
509 insn_value = cgen_get_insn_value (cd, buf, basesize);
512 /* Fill in ex_info fields like read_insn would. Don't actually call
513 read_insn, since the incoming buffer is already read (and possibly
514 modified a la m32r). */
515 ex_info.valid = (1 << buflen) - 1;
516 ex_info.dis_info = info;
517 ex_info.insn_bytes = buf;
519 /* The instructions are stored in hash lists.
520 Pick the first one and keep trying until we find the right one. */
522 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
523 while (insn_list != NULL)
525 const CGEN_INSN *insn = insn_list->insn;
526 CGEN_FIELDS fields;
527 int length;
528 unsigned long insn_value_cropped;
530 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
531 /* Not needed as insn shouldn't be in hash lists if not supported. */
532 /* Supported by this cpu? */
533 if (! fr30_cgen_insn_supported (cd, insn))
535 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
536 continue;
538 #endif
540 /* Basic bit mask must be correct. */
541 /* ??? May wish to allow target to defer this check until the extract
542 handler. */
544 /* Base size may exceed this instruction's size. Extract the
545 relevant part from the buffer. */
546 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
547 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
548 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
549 info->endian == BFD_ENDIAN_BIG);
550 else
551 insn_value_cropped = insn_value;
553 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
554 == CGEN_INSN_BASE_VALUE (insn))
556 /* Printing is handled in two passes. The first pass parses the
557 machine insn and extracts the fields. The second pass prints
558 them. */
560 /* Make sure the entire insn is loaded into insn_value, if it
561 can fit. */
562 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
563 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
565 unsigned long full_insn_value;
566 int rc = read_insn (cd, pc, info, buf,
567 CGEN_INSN_BITSIZE (insn) / 8,
568 & ex_info, & full_insn_value);
569 if (rc != 0)
570 return rc;
571 length = CGEN_EXTRACT_FN (cd, insn)
572 (cd, insn, &ex_info, full_insn_value, &fields, pc);
574 else
575 length = CGEN_EXTRACT_FN (cd, insn)
576 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
578 /* length < 0 -> error */
579 if (length < 0)
580 return length;
581 if (length > 0)
583 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
584 /* length is in bits, result is in bytes */
585 return length / 8;
589 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
592 return 0;
595 /* Default value for CGEN_PRINT_INSN.
596 The result is the size of the insn in bytes or zero for an unknown insn
597 or -1 if an error occured fetching bytes. */
599 #ifndef CGEN_PRINT_INSN
600 #define CGEN_PRINT_INSN default_print_insn
601 #endif
603 static int
604 default_print_insn (cd, pc, info)
605 CGEN_CPU_DESC cd;
606 bfd_vma pc;
607 disassemble_info *info;
609 char buf[CGEN_MAX_INSN_SIZE];
610 int buflen;
611 int status;
613 /* Attempt to read the base part of the insn. */
614 buflen = cd->base_insn_bitsize / 8;
615 status = (*info->read_memory_func) (pc, buf, buflen, info);
617 /* Try again with the minimum part, if min < base. */
618 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
620 buflen = cd->min_insn_bitsize / 8;
621 status = (*info->read_memory_func) (pc, buf, buflen, info);
624 if (status != 0)
626 (*info->memory_error_func) (status, pc, info);
627 return -1;
630 return print_insn (cd, pc, info, buf, buflen);
633 /* Main entry point.
634 Print one instruction from PC on INFO->STREAM.
635 Return the size of the instruction (in bytes). */
637 typedef struct cpu_desc_list {
638 struct cpu_desc_list *next;
639 int isa;
640 int mach;
641 int endian;
642 CGEN_CPU_DESC cd;
643 } cpu_desc_list;
646 print_insn_fr30 (pc, info)
647 bfd_vma pc;
648 disassemble_info *info;
650 static cpu_desc_list *cd_list = 0;
651 cpu_desc_list *cl = 0;
652 static CGEN_CPU_DESC cd = 0;
653 static int prev_isa;
654 static int prev_mach;
655 static int prev_endian;
656 int length;
657 int isa,mach;
658 int endian = (info->endian == BFD_ENDIAN_BIG
659 ? CGEN_ENDIAN_BIG
660 : CGEN_ENDIAN_LITTLE);
661 enum bfd_architecture arch;
663 /* ??? gdb will set mach but leave the architecture as "unknown" */
664 #ifndef CGEN_BFD_ARCH
665 #define CGEN_BFD_ARCH bfd_arch_fr30
666 #endif
667 arch = info->arch;
668 if (arch == bfd_arch_unknown)
669 arch = CGEN_BFD_ARCH;
671 /* There's no standard way to compute the machine or isa number
672 so we leave it to the target. */
673 #ifdef CGEN_COMPUTE_MACH
674 mach = CGEN_COMPUTE_MACH (info);
675 #else
676 mach = info->mach;
677 #endif
679 #ifdef CGEN_COMPUTE_ISA
680 isa = CGEN_COMPUTE_ISA (info);
681 #else
682 isa = info->insn_sets;
683 #endif
685 /* If we've switched cpu's, try to find a handle we've used before */
686 if (cd
687 && (isa != prev_isa
688 || mach != prev_mach
689 || endian != prev_endian))
691 cd = 0;
692 for (cl = cd_list; cl; cl = cl->next)
694 if (cl->isa == isa &&
695 cl->mach == mach &&
696 cl->endian == endian)
698 cd = cl->cd;
699 break;
704 /* If we haven't initialized yet, initialize the opcode table. */
705 if (! cd)
707 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
708 const char *mach_name;
710 if (!arch_type)
711 abort ();
712 mach_name = arch_type->printable_name;
714 prev_isa = isa;
715 prev_mach = mach;
716 prev_endian = endian;
717 cd = fr30_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
718 CGEN_CPU_OPEN_BFDMACH, mach_name,
719 CGEN_CPU_OPEN_ENDIAN, prev_endian,
720 CGEN_CPU_OPEN_END);
721 if (!cd)
722 abort ();
724 /* save this away for future reference */
725 cl = xmalloc (sizeof (struct cpu_desc_list));
726 cl->cd = cd;
727 cl->isa = isa;
728 cl->mach = mach;
729 cl->endian = endian;
730 cl->next = cd_list;
731 cd_list = cl;
733 fr30_cgen_init_dis (cd);
736 /* We try to have as much common code as possible.
737 But at this point some targets need to take over. */
738 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
739 but if not possible try to move this hook elsewhere rather than
740 have two hooks. */
741 length = CGEN_PRINT_INSN (cd, pc, info);
742 if (length > 0)
743 return length;
744 if (length < 0)
745 return -1;
747 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
748 return cd->default_insn_bitsize / 8;