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2005-10-28 Dave Brolley <brolley@redhat.com>
[deliverable/binutils-gdb.git] / opcodes / frv-dis.c
... / ...
CommitLineData
1/* Disassembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
3
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-dis.in isn't
6
7 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2005
8 Free Software Foundation, Inc.
9
10 This file is part of the GNU Binutils and GDB, the GNU debugger.
11
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.
16
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.
21
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 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25
26/* ??? Eventually more and more of this stuff can go to cpu-independent files.
27 Keep that in mind. */
28
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 "frv-desc.h"
37#include "frv-opc.h"
38#include "opintl.h"
39
40/* Default text to print if an instruction isn't recognized. */
41#define UNKNOWN_INSN_MSG _("*unknown*")
42
43static void print_normal
44 (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
45static void print_address
46 (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
47static void print_keyword
48 (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
49static void print_insn_normal
50 (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
51static int print_insn
52 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
53static int default_print_insn
54 (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
55static int read_insn
56 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
57 unsigned long *);
58\f
59/* -- disassembler routines inserted here. */
60
61/* -- dis.c */
62static void
63print_at (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
64 void * dis_info,
65 long reloc_ann ATTRIBUTE_UNUSED,
66 long value ATTRIBUTE_UNUSED,
67 bfd_vma pc ATTRIBUTE_UNUSED,
68 int length ATTRIBUTE_UNUSED)
69{
70 disassemble_info *info = (disassemble_info *) dis_info;
71
72 (*info->fprintf_func) (info->stream, "@");
73}
74
75static void
76print_spr (CGEN_CPU_DESC cd,
77 void * dis_info,
78 CGEN_KEYWORD *names,
79 long regno,
80 unsigned int attrs)
81{
82 /* Use the register index format for any unnamed registers. */
83 if (cgen_keyword_lookup_value (names, regno) == NULL)
84 {
85 disassemble_info *info = (disassemble_info *) dis_info;
86 (*info->fprintf_func) (info->stream, "spr[%ld]", regno);
87 }
88 else
89 print_keyword (cd, dis_info, names, regno, attrs);
90}
91
92static void
93print_hi (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
94 void * dis_info,
95 long value,
96 unsigned int attrs ATTRIBUTE_UNUSED,
97 bfd_vma pc ATTRIBUTE_UNUSED,
98 int length ATTRIBUTE_UNUSED)
99{
100 disassemble_info *info = (disassemble_info *) dis_info;
101
102 (*info->fprintf_func) (info->stream, value ? "0x%lx" : "hi(0x%lx)", value);
103}
104
105static void
106print_lo (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
107 void * dis_info,
108 long value,
109 unsigned int attrs ATTRIBUTE_UNUSED,
110 bfd_vma pc ATTRIBUTE_UNUSED,
111 int length ATTRIBUTE_UNUSED)
112{
113 disassemble_info *info = (disassemble_info *) dis_info;
114 if (value)
115 (*info->fprintf_func) (info->stream, "0x%lx", value);
116 else
117 (*info->fprintf_func) (info->stream, "lo(0x%lx)", value);
118}
119
120/* -- */
121
122void frv_cgen_print_operand
123 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
124
125/* Main entry point for printing operands.
126 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
127 of dis-asm.h on cgen.h.
128
129 This function is basically just a big switch statement. Earlier versions
130 used tables to look up the function to use, but
131 - if the table contains both assembler and disassembler functions then
132 the disassembler contains much of the assembler and vice-versa,
133 - there's a lot of inlining possibilities as things grow,
134 - using a switch statement avoids the function call overhead.
135
136 This function could be moved into `print_insn_normal', but keeping it
137 separate makes clear the interface between `print_insn_normal' and each of
138 the handlers. */
139
140void
141frv_cgen_print_operand (CGEN_CPU_DESC cd,
142 int opindex,
143 void * xinfo,
144 CGEN_FIELDS *fields,
145 void const *attrs ATTRIBUTE_UNUSED,
146 bfd_vma pc,
147 int length)
148{
149 disassemble_info *info = (disassemble_info *) xinfo;
150
151 switch (opindex)
152 {
153 case FRV_OPERAND_A0 :
154 print_normal (cd, info, fields->f_A, 0, pc, length);
155 break;
156 case FRV_OPERAND_A1 :
157 print_normal (cd, info, fields->f_A, 0, pc, length);
158 break;
159 case FRV_OPERAND_ACC40SI :
160 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Si, 0);
161 break;
162 case FRV_OPERAND_ACC40SK :
163 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Sk, 0);
164 break;
165 case FRV_OPERAND_ACC40UI :
166 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Ui, 0);
167 break;
168 case FRV_OPERAND_ACC40UK :
169 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Uk, 0);
170 break;
171 case FRV_OPERAND_ACCGI :
172 print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGi, 0);
173 break;
174 case FRV_OPERAND_ACCGK :
175 print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGk, 0);
176 break;
177 case FRV_OPERAND_CCI :
178 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CCi, 0);
179 break;
180 case FRV_OPERAND_CPRDOUBLEK :
181 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
182 break;
183 case FRV_OPERAND_CPRI :
184 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRi, 0);
185 break;
186 case FRV_OPERAND_CPRJ :
187 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRj, 0);
188 break;
189 case FRV_OPERAND_CPRK :
190 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
191 break;
192 case FRV_OPERAND_CRI :
193 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRi, 0);
194 break;
195 case FRV_OPERAND_CRJ :
196 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj, 0);
197 break;
198 case FRV_OPERAND_CRJ_FLOAT :
199 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_float, 0);
200 break;
201 case FRV_OPERAND_CRJ_INT :
202 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_int, 0);
203 break;
204 case FRV_OPERAND_CRK :
205 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRk, 0);
206 break;
207 case FRV_OPERAND_FCCI_1 :
208 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_1, 0);
209 break;
210 case FRV_OPERAND_FCCI_2 :
211 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_2, 0);
212 break;
213 case FRV_OPERAND_FCCI_3 :
214 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_3, 0);
215 break;
216 case FRV_OPERAND_FCCK :
217 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCk, 0);
218 break;
219 case FRV_OPERAND_FRDOUBLEI :
220 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
221 break;
222 case FRV_OPERAND_FRDOUBLEJ :
223 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
224 break;
225 case FRV_OPERAND_FRDOUBLEK :
226 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
227 break;
228 case FRV_OPERAND_FRI :
229 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
230 break;
231 case FRV_OPERAND_FRINTI :
232 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
233 break;
234 case FRV_OPERAND_FRINTIEVEN :
235 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
236 break;
237 case FRV_OPERAND_FRINTJ :
238 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
239 break;
240 case FRV_OPERAND_FRINTJEVEN :
241 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
242 break;
243 case FRV_OPERAND_FRINTK :
244 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
245 break;
246 case FRV_OPERAND_FRINTKEVEN :
247 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
248 break;
249 case FRV_OPERAND_FRJ :
250 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
251 break;
252 case FRV_OPERAND_FRK :
253 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
254 break;
255 case FRV_OPERAND_FRKHI :
256 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
257 break;
258 case FRV_OPERAND_FRKLO :
259 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
260 break;
261 case FRV_OPERAND_GRDOUBLEK :
262 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
263 break;
264 case FRV_OPERAND_GRI :
265 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRi, 0);
266 break;
267 case FRV_OPERAND_GRJ :
268 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRj, 0);
269 break;
270 case FRV_OPERAND_GRK :
271 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
272 break;
273 case FRV_OPERAND_GRKHI :
274 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
275 break;
276 case FRV_OPERAND_GRKLO :
277 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
278 break;
279 case FRV_OPERAND_ICCI_1 :
280 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_1, 0);
281 break;
282 case FRV_OPERAND_ICCI_2 :
283 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_2, 0);
284 break;
285 case FRV_OPERAND_ICCI_3 :
286 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_3, 0);
287 break;
288 case FRV_OPERAND_LI :
289 print_normal (cd, info, fields->f_LI, 0, pc, length);
290 break;
291 case FRV_OPERAND_LRAD :
292 print_normal (cd, info, fields->f_LRAD, 0, pc, length);
293 break;
294 case FRV_OPERAND_LRAE :
295 print_normal (cd, info, fields->f_LRAE, 0, pc, length);
296 break;
297 case FRV_OPERAND_LRAS :
298 print_normal (cd, info, fields->f_LRAS, 0, pc, length);
299 break;
300 case FRV_OPERAND_TLBPRL :
301 print_normal (cd, info, fields->f_TLBPRL, 0, pc, length);
302 break;
303 case FRV_OPERAND_TLBPROPX :
304 print_normal (cd, info, fields->f_TLBPRopx, 0, pc, length);
305 break;
306 case FRV_OPERAND_AE :
307 print_normal (cd, info, fields->f_ae, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
308 break;
309 case FRV_OPERAND_CALLANN :
310 print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
311 break;
312 case FRV_OPERAND_CCOND :
313 print_normal (cd, info, fields->f_ccond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
314 break;
315 case FRV_OPERAND_COND :
316 print_normal (cd, info, fields->f_cond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
317 break;
318 case FRV_OPERAND_D12 :
319 print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
320 break;
321 case FRV_OPERAND_DEBUG :
322 print_normal (cd, info, fields->f_debug, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
323 break;
324 case FRV_OPERAND_EIR :
325 print_normal (cd, info, fields->f_eir, 0, pc, length);
326 break;
327 case FRV_OPERAND_HINT :
328 print_normal (cd, info, fields->f_hint, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
329 break;
330 case FRV_OPERAND_HINT_NOT_TAKEN :
331 print_keyword (cd, info, & frv_cgen_opval_h_hint_not_taken, fields->f_hint, 0);
332 break;
333 case FRV_OPERAND_HINT_TAKEN :
334 print_keyword (cd, info, & frv_cgen_opval_h_hint_taken, fields->f_hint, 0);
335 break;
336 case FRV_OPERAND_LABEL16 :
337 print_address (cd, info, fields->f_label16, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
338 break;
339 case FRV_OPERAND_LABEL24 :
340 print_address (cd, info, fields->f_label24, 0|(1<<CGEN_OPERAND_PCREL_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
341 break;
342 case FRV_OPERAND_LDANN :
343 print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
344 break;
345 case FRV_OPERAND_LDDANN :
346 print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
347 break;
348 case FRV_OPERAND_LOCK :
349 print_normal (cd, info, fields->f_lock, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
350 break;
351 case FRV_OPERAND_PACK :
352 print_keyword (cd, info, & frv_cgen_opval_h_pack, fields->f_pack, 0);
353 break;
354 case FRV_OPERAND_S10 :
355 print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
356 break;
357 case FRV_OPERAND_S12 :
358 print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
359 break;
360 case FRV_OPERAND_S16 :
361 print_normal (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
362 break;
363 case FRV_OPERAND_S5 :
364 print_normal (cd, info, fields->f_s5, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
365 break;
366 case FRV_OPERAND_S6 :
367 print_normal (cd, info, fields->f_s6, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
368 break;
369 case FRV_OPERAND_S6_1 :
370 print_normal (cd, info, fields->f_s6_1, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
371 break;
372 case FRV_OPERAND_SLO16 :
373 print_lo (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
374 break;
375 case FRV_OPERAND_SPR :
376 print_spr (cd, info, & frv_cgen_opval_spr_names, fields->f_spr, 0|(1<<CGEN_OPERAND_VIRTUAL));
377 break;
378 case FRV_OPERAND_U12 :
379 print_normal (cd, info, fields->f_u12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
380 break;
381 case FRV_OPERAND_U16 :
382 print_normal (cd, info, fields->f_u16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
383 break;
384 case FRV_OPERAND_U6 :
385 print_normal (cd, info, fields->f_u6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
386 break;
387 case FRV_OPERAND_UHI16 :
388 print_hi (cd, info, fields->f_u16, 0, pc, length);
389 break;
390 case FRV_OPERAND_ULO16 :
391 print_lo (cd, info, fields->f_u16, 0, pc, length);
392 break;
393
394 default :
395 /* xgettext:c-format */
396 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
397 opindex);
398 abort ();
399 }
400}
401
402cgen_print_fn * const frv_cgen_print_handlers[] =
403{
404 print_insn_normal,
405};
406
407
408void
409frv_cgen_init_dis (CGEN_CPU_DESC cd)
410{
411 frv_cgen_init_opcode_table (cd);
412 frv_cgen_init_ibld_table (cd);
413 cd->print_handlers = & frv_cgen_print_handlers[0];
414 cd->print_operand = frv_cgen_print_operand;
415}
416
417\f
418/* Default print handler. */
419
420static void
421print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
422 void *dis_info,
423 long value,
424 unsigned int attrs,
425 bfd_vma pc ATTRIBUTE_UNUSED,
426 int length ATTRIBUTE_UNUSED)
427{
428 disassemble_info *info = (disassemble_info *) dis_info;
429
430#ifdef CGEN_PRINT_NORMAL
431 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
432#endif
433
434 /* Print the operand as directed by the attributes. */
435 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
436 ; /* nothing to do */
437 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
438 (*info->fprintf_func) (info->stream, "%ld", value);
439 else
440 (*info->fprintf_func) (info->stream, "0x%lx", value);
441}
442
443/* Default address handler. */
444
445static void
446print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
447 void *dis_info,
448 bfd_vma value,
449 unsigned int attrs,
450 bfd_vma pc ATTRIBUTE_UNUSED,
451 int length ATTRIBUTE_UNUSED)
452{
453 disassemble_info *info = (disassemble_info *) dis_info;
454
455#ifdef CGEN_PRINT_ADDRESS
456 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
457#endif
458
459 /* Print the operand as directed by the attributes. */
460 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
461 ; /* Nothing to do. */
462 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
463 (*info->print_address_func) (value, info);
464 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
465 (*info->print_address_func) (value, info);
466 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
467 (*info->fprintf_func) (info->stream, "%ld", (long) value);
468 else
469 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
470}
471
472/* Keyword print handler. */
473
474static void
475print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
476 void *dis_info,
477 CGEN_KEYWORD *keyword_table,
478 long value,
479 unsigned int attrs ATTRIBUTE_UNUSED)
480{
481 disassemble_info *info = (disassemble_info *) dis_info;
482 const CGEN_KEYWORD_ENTRY *ke;
483
484 ke = cgen_keyword_lookup_value (keyword_table, value);
485 if (ke != NULL)
486 (*info->fprintf_func) (info->stream, "%s", ke->name);
487 else
488 (*info->fprintf_func) (info->stream, "???");
489}
490\f
491/* Default insn printer.
492
493 DIS_INFO is defined as `void *' so the disassembler needn't know anything
494 about disassemble_info. */
495
496static void
497print_insn_normal (CGEN_CPU_DESC cd,
498 void *dis_info,
499 const CGEN_INSN *insn,
500 CGEN_FIELDS *fields,
501 bfd_vma pc,
502 int length)
503{
504 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
505 disassemble_info *info = (disassemble_info *) dis_info;
506 const CGEN_SYNTAX_CHAR_TYPE *syn;
507
508 CGEN_INIT_PRINT (cd);
509
510 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
511 {
512 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
513 {
514 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
515 continue;
516 }
517 if (CGEN_SYNTAX_CHAR_P (*syn))
518 {
519 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
520 continue;
521 }
522
523 /* We have an operand. */
524 frv_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
525 fields, CGEN_INSN_ATTRS (insn), pc, length);
526 }
527}
528\f
529/* Subroutine of print_insn. Reads an insn into the given buffers and updates
530 the extract info.
531 Returns 0 if all is well, non-zero otherwise. */
532
533static int
534read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
535 bfd_vma pc,
536 disassemble_info *info,
537 bfd_byte *buf,
538 int buflen,
539 CGEN_EXTRACT_INFO *ex_info,
540 unsigned long *insn_value)
541{
542 int status = (*info->read_memory_func) (pc, buf, buflen, info);
543
544 if (status != 0)
545 {
546 (*info->memory_error_func) (status, pc, info);
547 return -1;
548 }
549
550 ex_info->dis_info = info;
551 ex_info->valid = (1 << buflen) - 1;
552 ex_info->insn_bytes = buf;
553
554 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
555 return 0;
556}
557
558/* Utility to print an insn.
559 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
560 The result is the size of the insn in bytes or zero for an unknown insn
561 or -1 if an error occurs fetching data (memory_error_func will have
562 been called). */
563
564static int
565print_insn (CGEN_CPU_DESC cd,
566 bfd_vma pc,
567 disassemble_info *info,
568 bfd_byte *buf,
569 unsigned int buflen)
570{
571 CGEN_INSN_INT insn_value;
572 const CGEN_INSN_LIST *insn_list;
573 CGEN_EXTRACT_INFO ex_info;
574 int basesize;
575
576 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
577 basesize = cd->base_insn_bitsize < buflen * 8 ?
578 cd->base_insn_bitsize : buflen * 8;
579 insn_value = cgen_get_insn_value (cd, buf, basesize);
580
581
582 /* Fill in ex_info fields like read_insn would. Don't actually call
583 read_insn, since the incoming buffer is already read (and possibly
584 modified a la m32r). */
585 ex_info.valid = (1 << buflen) - 1;
586 ex_info.dis_info = info;
587 ex_info.insn_bytes = buf;
588
589 /* The instructions are stored in hash lists.
590 Pick the first one and keep trying until we find the right one. */
591
592 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
593 while (insn_list != NULL)
594 {
595 const CGEN_INSN *insn = insn_list->insn;
596 CGEN_FIELDS fields;
597 int length;
598 unsigned long insn_value_cropped;
599
600#ifdef CGEN_VALIDATE_INSN_SUPPORTED
601 /* Not needed as insn shouldn't be in hash lists if not supported. */
602 /* Supported by this cpu? */
603 if (! frv_cgen_insn_supported (cd, insn))
604 {
605 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
606 continue;
607 }
608#endif
609
610 /* Basic bit mask must be correct. */
611 /* ??? May wish to allow target to defer this check until the extract
612 handler. */
613
614 /* Base size may exceed this instruction's size. Extract the
615 relevant part from the buffer. */
616 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
617 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
618 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
619 info->endian == BFD_ENDIAN_BIG);
620 else
621 insn_value_cropped = insn_value;
622
623 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
624 == CGEN_INSN_BASE_VALUE (insn))
625 {
626 /* Printing is handled in two passes. The first pass parses the
627 machine insn and extracts the fields. The second pass prints
628 them. */
629
630 /* Make sure the entire insn is loaded into insn_value, if it
631 can fit. */
632 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
633 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
634 {
635 unsigned long full_insn_value;
636 int rc = read_insn (cd, pc, info, buf,
637 CGEN_INSN_BITSIZE (insn) / 8,
638 & ex_info, & full_insn_value);
639 if (rc != 0)
640 return rc;
641 length = CGEN_EXTRACT_FN (cd, insn)
642 (cd, insn, &ex_info, full_insn_value, &fields, pc);
643 }
644 else
645 length = CGEN_EXTRACT_FN (cd, insn)
646 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
647
648 /* Length < 0 -> error. */
649 if (length < 0)
650 return length;
651 if (length > 0)
652 {
653 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
654 /* Length is in bits, result is in bytes. */
655 return length / 8;
656 }
657 }
658
659 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
660 }
661
662 return 0;
663}
664
665/* Default value for CGEN_PRINT_INSN.
666 The result is the size of the insn in bytes or zero for an unknown insn
667 or -1 if an error occured fetching bytes. */
668
669#ifndef CGEN_PRINT_INSN
670#define CGEN_PRINT_INSN default_print_insn
671#endif
672
673static int
674default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
675{
676 bfd_byte buf[CGEN_MAX_INSN_SIZE];
677 int buflen;
678 int status;
679
680 /* Attempt to read the base part of the insn. */
681 buflen = cd->base_insn_bitsize / 8;
682 status = (*info->read_memory_func) (pc, buf, buflen, info);
683
684 /* Try again with the minimum part, if min < base. */
685 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
686 {
687 buflen = cd->min_insn_bitsize / 8;
688 status = (*info->read_memory_func) (pc, buf, buflen, info);
689 }
690
691 if (status != 0)
692 {
693 (*info->memory_error_func) (status, pc, info);
694 return -1;
695 }
696
697 return print_insn (cd, pc, info, buf, buflen);
698}
699
700/* Main entry point.
701 Print one instruction from PC on INFO->STREAM.
702 Return the size of the instruction (in bytes). */
703
704typedef struct cpu_desc_list
705{
706 struct cpu_desc_list *next;
707 int isa;
708 int mach;
709 int endian;
710 CGEN_CPU_DESC cd;
711} cpu_desc_list;
712
713int
714print_insn_frv (bfd_vma pc, disassemble_info *info)
715{
716 static cpu_desc_list *cd_list = 0;
717 cpu_desc_list *cl = 0;
718 static CGEN_CPU_DESC cd = 0;
719 static int prev_isa;
720 static int prev_mach;
721 static int prev_endian;
722 int length;
723 int isa,mach;
724 int endian = (info->endian == BFD_ENDIAN_BIG
725 ? CGEN_ENDIAN_BIG
726 : CGEN_ENDIAN_LITTLE);
727 enum bfd_architecture arch;
728
729 /* ??? gdb will set mach but leave the architecture as "unknown" */
730#ifndef CGEN_BFD_ARCH
731#define CGEN_BFD_ARCH bfd_arch_frv
732#endif
733 arch = info->arch;
734 if (arch == bfd_arch_unknown)
735 arch = CGEN_BFD_ARCH;
736
737 /* There's no standard way to compute the machine or isa number
738 so we leave it to the target. */
739#ifdef CGEN_COMPUTE_MACH
740 mach = CGEN_COMPUTE_MACH (info);
741#else
742 mach = info->mach;
743#endif
744
745#ifdef CGEN_COMPUTE_ISA
746 isa = CGEN_COMPUTE_ISA (info);
747#else
748 isa = info->insn_sets;
749#endif
750
751 /* If we've switched cpu's, try to find a handle we've used before */
752 if (cd
753 && (isa != prev_isa
754 || mach != prev_mach
755 || endian != prev_endian))
756 {
757 cd = 0;
758 for (cl = cd_list; cl; cl = cl->next)
759 {
760 if (cl->isa == isa &&
761 cl->mach == mach &&
762 cl->endian == endian)
763 {
764 cd = cl->cd;
765 break;
766 }
767 }
768 }
769
770 /* If we haven't initialized yet, initialize the opcode table. */
771 if (! cd)
772 {
773 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
774 const char *mach_name;
775
776 if (!arch_type)
777 abort ();
778 mach_name = arch_type->printable_name;
779
780 prev_isa = isa;
781 prev_mach = mach;
782 prev_endian = endian;
783 cd = frv_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
784 CGEN_CPU_OPEN_BFDMACH, mach_name,
785 CGEN_CPU_OPEN_ENDIAN, prev_endian,
786 CGEN_CPU_OPEN_END);
787 if (!cd)
788 abort ();
789
790 /* Save this away for future reference. */
791 cl = xmalloc (sizeof (struct cpu_desc_list));
792 cl->cd = cd;
793 cl->isa = isa;
794 cl->mach = mach;
795 cl->endian = endian;
796 cl->next = cd_list;
797 cd_list = cl;
798
799 frv_cgen_init_dis (cd);
800 }
801
802 /* We try to have as much common code as possible.
803 But at this point some targets need to take over. */
804 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
805 but if not possible try to move this hook elsewhere rather than
806 have two hooks. */
807 length = CGEN_PRINT_INSN (cd, pc, info);
808 if (length > 0)
809 return length;
810 if (length < 0)
811 return -1;
812
813 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
814 return cd->default_insn_bitsize / 8;
815}
GDB Binutils - Deliverables
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