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2007-09-26 Pierre Muller <muller@ics.u-strasbg.fr>
[deliverable/binutils-gdb.git] / opcodes / mt-asm.c
CommitLineData
ac188222
DB		 1/* Assembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
3
47b0e7ad
NC		 4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-asm.in isn't
ac188222 6
9b201bb5 7 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2007
47b0e7ad 8 Free Software Foundation, Inc.
ac188222 9
9b201bb5 10 This file is part of libopcodes.
ac188222 11
9b201bb5 12 This library is free software; you can redistribute it and/or modify
47b0e7ad 13 it under the terms of the GNU General Public License as published by
9b201bb5 14 the Free Software Foundation; either version 3, or (at your option)
47b0e7ad 15 any later version.
ac188222 16
9b201bb5
NC		 17 It is distributed in the hope that it will be useful, but WITHOUT
18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
20 License for more details.
ac188222 21
47b0e7ad
NC		 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. */
ac188222 25
9b201bb5 26
ac188222
DB		 27/* ??? Eventually more and more of this stuff can go to cpu-independent files.
28 Keep that in mind. */
29
30#include "sysdep.h"
31#include <stdio.h>
32#include "ansidecl.h"
33#include "bfd.h"
34#include "symcat.h"
d031aafb
NS		 35#include "mt-desc.h"
36#include "mt-opc.h"
ac188222
DB		 37#include "opintl.h"
38#include "xregex.h"
39#include "libiberty.h"
40#include "safe-ctype.h"
41
42#undef min
43#define min(a,b) ((a) < (b) ? (a) : (b))
44#undef max
45#define max(a,b) ((a) > (b) ? (a) : (b))
46
47static const char * parse_insn_normal
48 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
49\f
50/* -- assembler routines inserted here. */
51
52/* -- asm.c */
ac188222
DB		 53/* Range checking for signed numbers. Returns 0 if acceptable
54 and 1 if the value is out of bounds for a signed quantity. */
55
56static int
57signed_out_of_bounds (long val)
58{
59 if ((val < -32768) || (val > 32767))
60 return 1;
61 return 0;
62}
63
6f84a2a6
NS		 64static const char *
65parse_loopsize (CGEN_CPU_DESC cd,
66 const char **strp,
67 int opindex,
68 void *arg)
69{
70 signed long * valuep = (signed long *) arg;
71 const char *errmsg;
72 bfd_reloc_code_real_type code = BFD_RELOC_NONE;
73 enum cgen_parse_operand_result result_type;
74 bfd_vma value;
75
76 /* Is it a control transfer instructions? */
d031aafb 77 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE)
6f84a2a6 78 {
d031aafb 79 code = BFD_RELOC_MT_PCINSN8;
6f84a2a6
NS		 80 errmsg = cgen_parse_address (cd, strp, opindex, code,
81 & result_type, & value);
82 *valuep = value;
83 return errmsg;
84 }
85
86 abort ();
87}
88
ac188222
DB		 89static const char *
90parse_imm16 (CGEN_CPU_DESC cd,
91 const char **strp,
92 int opindex,
3ec2b351 93 void *arg)
ac188222 94{
3ec2b351 95 signed long * valuep = (signed long *) arg;
ac188222
DB		 96 const char *errmsg;
97 enum cgen_parse_operand_result result_type;
98 bfd_reloc_code_real_type code = BFD_RELOC_NONE;
99 bfd_vma value;
100
101 /* Is it a control transfer instructions? */
d031aafb 102 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O)
ac188222
DB		 103 {
104 code = BFD_RELOC_16_PCREL;
105 errmsg = cgen_parse_address (cd, strp, opindex, code,
106 & result_type, & value);
107 if (errmsg == NULL)
108 {
109 if (signed_out_of_bounds (value))
110 errmsg = _("Operand out of range. Must be between -32768 and 32767.");
111 }
112 *valuep = value;
113 return errmsg;
114 }
115
116 /* If it's not a control transfer instruction, then
117 we have to check for %OP relocating operators. */
d031aafb 118 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L)
6f84a2a6
NS		 119 ;
120 else if (strncmp (*strp, "%hi16", 5) == 0)
ac188222
DB		 121 {
122 *strp += 5;
123 code = BFD_RELOC_HI16;
124 }
125 else if (strncmp (*strp, "%lo16", 5) == 0)
126 {
127 *strp += 5;
128 code = BFD_RELOC_LO16;
129 }
130
131 /* If we found a %OP relocating operator, then parse it as an address.
132 If not, we need to parse it as an integer, either signed or unsigned
133 depending on which operand type we have. */
134 if (code != BFD_RELOC_NONE)
135 {
136 /* %OP relocating operator found. */
137 errmsg = cgen_parse_address (cd, strp, opindex, code,
138 & result_type, & value);
139 if (errmsg == NULL)
140 {
141 switch (result_type)
142 {
143 case (CGEN_PARSE_OPERAND_RESULT_NUMBER):
144 if (code == BFD_RELOC_HI16)
145 value = (value >> 16) & 0xFFFF;
146 else if (code == BFD_RELOC_LO16)
147 value = value & 0xFFFF;
148 else
149 errmsg = _("Biiiig Trouble in parse_imm16!");
150 break;
151
152 case (CGEN_PARSE_OPERAND_RESULT_QUEUED):
153 /* No special processing for this case. */
154 break;
155
156 default:
157 errmsg = _("%operator operand is not a symbol");
158 break;
159 }
160 }
161 *valuep = value;
162 }
163 else
164 {
165 /* Parse hex values like 0xffff as unsigned, and sign extend
166 them manually. */
d031aafb 167 int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16);
ac188222
DB		 168
169 if ((*strp)[0] == '0'
170 && ((*strp)[1] == 'x' || (*strp)[1] == 'X'))
171 parse_signed = 0;
172
173 /* No relocating operator. Parse as an number. */
174 if (parse_signed)
175 {
176 /* Parse as as signed integer. */
177
178 errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
179
180 if (errmsg == NULL)
181 {
182#if 0
183 /* Manual range checking is needed for the signed case. */
184 if (*valuep & 0x8000)
185 value = 0xffff0000 | *valuep;
186 else
187 value = *valuep;
188
189 if (signed_out_of_bounds (value))
190 errmsg = _("Operand out of range. Must be between -32768 and 32767.");
191 /* Truncate to 16 bits. This is necessary
192 because cgen will have sign extended *valuep. */
193 *valuep &= 0xFFFF;
194#endif
195 }
196 }
197 else
198 {
d031aafb 199 /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */
3ec2b351 200 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep);
ac188222 201
d031aafb 202 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16
ac188222
DB		 203 && *valuep >= 0x8000
204 && *valuep <= 0xffff)
205 *valuep -= 0x10000;
206 }
207 }
208
209 return errmsg;
210}
211
212
213static const char *
214parse_dup (CGEN_CPU_DESC cd,
215 const char **strp,
216 int opindex,
3ec2b351 217 unsigned long *valuep)
ac188222
DB		 218{
219 const char *errmsg = NULL;
220
221 if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0)
222 {
223 *strp += 3;
224 *valuep = 1;
225 }
226 else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0)
227 {
228 *strp += 2;
229 *valuep = 0;
230 }
231 else
232 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
233
234 return errmsg;
235}
236
237
238static const char *
239parse_ball (CGEN_CPU_DESC cd,
240 const char **strp,
241 int opindex,
3ec2b351 242 unsigned long *valuep)
ac188222
DB		 243{
244 const char *errmsg = NULL;
245
246 if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0)
247 {
248 *strp += 3;
249 *valuep = 1;
250 }
251 else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0)
252 {
253 *strp += 3;
254 *valuep = 0;
255 }
256 else
257 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
258
259 return errmsg;
260}
261
262static const char *
263parse_xmode (CGEN_CPU_DESC cd,
264 const char **strp,
265 int opindex,
3ec2b351 266 unsigned long *valuep)
ac188222
DB		 267{
268 const char *errmsg = NULL;
269
270 if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0)
271 {
272 *strp += 2;
273 *valuep = 1;
274 }
275 else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0)
276 {
277 *strp += 2;
278 *valuep = 0;
279 }
280 else
281 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
282
283 return errmsg;
284}
285
286static const char *
287parse_rc (CGEN_CPU_DESC cd,
288 const char **strp,
289 int opindex,
3ec2b351 290 unsigned long *valuep)
ac188222
DB		 291{
292 const char *errmsg = NULL;
293
294 if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0)
295 {
296 *strp += 1;
297 *valuep = 1;
298 }
299 else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0)
300 {
301 *strp += 1;
302 *valuep = 0;
303 }
304 else
305 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
306
307 return errmsg;
308}
309
310static const char *
311parse_cbrb (CGEN_CPU_DESC cd,
312 const char **strp,
313 int opindex,
3ec2b351 314 unsigned long *valuep)
ac188222
DB		 315{
316 const char *errmsg = NULL;
317
318 if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0)
319 {
320 *strp += 2;
321 *valuep = 1;
322 }
323 else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0)
324 {
325 *strp += 2;
326 *valuep = 0;
327 }
328 else
329 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
330
331 return errmsg;
332}
333
334static const char *
335parse_rbbc (CGEN_CPU_DESC cd,
336 const char **strp,
337 int opindex,
3ec2b351 338 unsigned long *valuep)
ac188222
DB		 339{
340 const char *errmsg = NULL;
341
342 if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0)
343 {
344 *strp += 2;
345 *valuep = 0;
346 }
347 else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0)
348 {
349 *strp += 3;
350 *valuep = 1;
351 }
352 else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0)
353 {
354 *strp += 3;
355 *valuep = 2;
356 }
357 else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0)
358 {
359 *strp += 2;
360 *valuep = 3;
361 }
362 else
363 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
364
365 return errmsg;
366}
367
368static const char *
369parse_type (CGEN_CPU_DESC cd,
370 const char **strp,
371 int opindex,
3ec2b351 372 unsigned long *valuep)
ac188222
DB		 373{
374 const char *errmsg = NULL;
375
376 if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0)
377 {
378 *strp += 3;
379 *valuep = 0;
380 }
381 else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0)
382 {
383 *strp += 4;
384 *valuep = 1;
385 }
386 else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0)
387 {
388 *strp += 2;
389 *valuep = 2;
390 }
391 else
392 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
393
394 if ((errmsg == NULL) && (*valuep == 3))
395 errmsg = _("invalid operand. type may have values 0,1,2 only.");
396
397 return errmsg;
398}
399
400/* -- dis.c */
401
d031aafb 402const char * mt_cgen_parse_operand
47b0e7ad 403 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
ac188222
DB		 404
405/* Main entry point for operand parsing.
406
407 This function is basically just a big switch statement. Earlier versions
408 used tables to look up the function to use, but
409 - if the table contains both assembler and disassembler functions then
410 the disassembler contains much of the assembler and vice-versa,
411 - there's a lot of inlining possibilities as things grow,
412 - using a switch statement avoids the function call overhead.
413
414 This function could be moved into `parse_insn_normal', but keeping it
415 separate makes clear the interface between `parse_insn_normal' and each of
416 the handlers. */
417
418const char *
d031aafb 419mt_cgen_parse_operand (CGEN_CPU_DESC cd,
47b0e7ad
NC		 420 int opindex,
421 const char ** strp,
422 CGEN_FIELDS * fields)
ac188222
DB		 423{
424 const char * errmsg = NULL;
425 /* Used by scalar operands that still need to be parsed. */
426 long junk ATTRIBUTE_UNUSED;
427
428 switch (opindex)
429 {
d031aafb
NS		 430 case MT_OPERAND_A23 :
431 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23));
ac188222 432 break;
d031aafb
NS		 433 case MT_OPERAND_BALL :
434 errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball));
ac188222 435 break;
d031aafb
NS		 436 case MT_OPERAND_BALL2 :
437 errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2));
ac188222 438 break;
d031aafb
NS		 439 case MT_OPERAND_BANKADDR :
440 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr));
ac188222 441 break;
d031aafb
NS		 442 case MT_OPERAND_BRC :
443 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc));
ac188222 444 break;
d031aafb
NS		 445 case MT_OPERAND_BRC2 :
446 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2));
ac188222 447 break;
d031aafb
NS		 448 case MT_OPERAND_CB1INCR :
449 errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr));
6f84a2a6 450 break;
d031aafb
NS		 451 case MT_OPERAND_CB1SEL :
452 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel));
6f84a2a6 453 break;
d031aafb
NS		 454 case MT_OPERAND_CB2INCR :
455 errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr));
6f84a2a6 456 break;
d031aafb
NS		 457 case MT_OPERAND_CB2SEL :
458 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel));
6f84a2a6 459 break;
d031aafb
NS		 460 case MT_OPERAND_CBRB :
461 errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb));
ac188222 462 break;
d031aafb
NS		 463 case MT_OPERAND_CBS :
464 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs));
ac188222 465 break;
d031aafb
NS		 466 case MT_OPERAND_CBX :
467 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx));
ac188222 468 break;
d031aafb
NS		 469 case MT_OPERAND_CCB :
470 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb));
ac188222 471 break;
d031aafb
NS		 472 case MT_OPERAND_CDB :
473 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb));
ac188222 474 break;
d031aafb
NS		 475 case MT_OPERAND_CELL :
476 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell));
ac188222 477 break;
d031aafb
NS		 478 case MT_OPERAND_COLNUM :
479 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum));
ac188222 480 break;
d031aafb
NS		 481 case MT_OPERAND_CONTNUM :
482 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum));
ac188222 483 break;
d031aafb
NS		 484 case MT_OPERAND_CR :
485 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr));
ac188222 486 break;
d031aafb
NS		 487 case MT_OPERAND_CTXDISP :
488 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp));
ac188222 489 break;
d031aafb
NS		 490 case MT_OPERAND_DUP :
491 errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup));
ac188222 492 break;
d031aafb
NS		 493 case MT_OPERAND_FBDISP :
494 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp));
ac188222 495 break;
d031aafb
NS		 496 case MT_OPERAND_FBINCR :
497 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr));
ac188222 498 break;
d031aafb
NS		 499 case MT_OPERAND_FRDR :
500 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr);
ac188222 501 break;
d031aafb
NS		 502 case MT_OPERAND_FRDRRR :
503 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr);
ac188222 504 break;
d031aafb
NS		 505 case MT_OPERAND_FRSR1 :
506 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1);
ac188222 507 break;
d031aafb
NS		 508 case MT_OPERAND_FRSR2 :
509 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2);
ac188222 510 break;
d031aafb
NS		 511 case MT_OPERAND_ID :
512 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id));
ac188222 513 break;
d031aafb
NS		 514 case MT_OPERAND_IMM16 :
515 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s));
ac188222 516 break;
d031aafb
NS		 517 case MT_OPERAND_IMM16L :
518 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l));
6f84a2a6 519 break;
d031aafb
NS		 520 case MT_OPERAND_IMM16O :
521 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s));
ac188222 522 break;
d031aafb
NS		 523 case MT_OPERAND_IMM16Z :
524 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u));
ac188222 525 break;
d031aafb
NS		 526 case MT_OPERAND_INCAMT :
527 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt));
ac188222 528 break;
d031aafb
NS		 529 case MT_OPERAND_INCR :
530 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr));
ac188222 531 break;
d031aafb
NS		 532 case MT_OPERAND_LENGTH :
533 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length));
ac188222 534 break;
d031aafb
NS		 535 case MT_OPERAND_LOOPSIZE :
536 errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo));
6f84a2a6 537 break;
d031aafb
NS		 538 case MT_OPERAND_MASK :
539 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask));
ac188222 540 break;
d031aafb
NS		 541 case MT_OPERAND_MASK1 :
542 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1));
ac188222 543 break;
d031aafb
NS		 544 case MT_OPERAND_MODE :
545 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode));
ac188222 546 break;
d031aafb
NS		 547 case MT_OPERAND_PERM :
548 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm));
ac188222 549 break;
d031aafb
NS		 550 case MT_OPERAND_RBBC :
551 errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc));
ac188222 552 break;
d031aafb
NS		 553 case MT_OPERAND_RC :
554 errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc));
ac188222 555 break;
d031aafb
NS		 556 case MT_OPERAND_RC1 :
557 errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1));
ac188222 558 break;
d031aafb
NS		 559 case MT_OPERAND_RC2 :
560 errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2));
ac188222 561 break;
d031aafb
NS		 562 case MT_OPERAND_RC3 :
563 errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3));
6f84a2a6 564 break;
d031aafb
NS		 565 case MT_OPERAND_RCNUM :
566 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum));
ac188222 567 break;
d031aafb
NS		 568 case MT_OPERAND_RDA :
569 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda));
ac188222 570 break;
d031aafb
NS		 571 case MT_OPERAND_ROWNUM :
572 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum));
ac188222 573 break;
d031aafb
NS		 574 case MT_OPERAND_ROWNUM1 :
575 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1));
ac188222 576 break;
d031aafb
NS		 577 case MT_OPERAND_ROWNUM2 :
578 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2));
ac188222 579 break;
d031aafb
NS		 580 case MT_OPERAND_SIZE :
581 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size));
ac188222 582 break;
d031aafb
NS		 583 case MT_OPERAND_TYPE :
584 errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type));
ac188222 585 break;
d031aafb
NS		 586 case MT_OPERAND_WR :
587 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr));
ac188222 588 break;
d031aafb
NS		 589 case MT_OPERAND_XMODE :
590 errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode));
ac188222
DB		 591 break;
592
593 default :
594 /* xgettext:c-format */
595 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
596 abort ();
597 }
598
599 return errmsg;
600}
601
d031aafb 602cgen_parse_fn * const mt_cgen_parse_handlers[] =
ac188222
DB		 603{
604 parse_insn_normal,
605};
606
607void
d031aafb 608mt_cgen_init_asm (CGEN_CPU_DESC cd)
ac188222 609{
d031aafb
NS		 610 mt_cgen_init_opcode_table (cd);
611 mt_cgen_init_ibld_table (cd);
612 cd->parse_handlers = & mt_cgen_parse_handlers[0];
613 cd->parse_operand = mt_cgen_parse_operand;
1620f33d
AM		 614#ifdef CGEN_ASM_INIT_HOOK
615CGEN_ASM_INIT_HOOK
616#endif
ac188222
DB		 617}
618
619\f
620
621/* Regex construction routine.
622
623 This translates an opcode syntax string into a regex string,
624 by replacing any non-character syntax element (such as an
625 opcode) with the pattern '.*'
626
627 It then compiles the regex and stores it in the opcode, for
d031aafb 628 later use by mt_cgen_assemble_insn
ac188222
DB		 629
630 Returns NULL for success, an error message for failure. */
631
632char *
d031aafb 633mt_cgen_build_insn_regex (CGEN_INSN *insn)
ac188222
DB		 634{
635 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
636 const char *mnem = CGEN_INSN_MNEMONIC (insn);
637 char rxbuf[CGEN_MAX_RX_ELEMENTS];
638 char *rx = rxbuf;
639 const CGEN_SYNTAX_CHAR_TYPE *syn;
640 int reg_err;
641
642 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
643
644 /* Mnemonics come first in the syntax string. */
645 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
646 return _("missing mnemonic in syntax string");
647 ++syn;
648
649 /* Generate a case sensitive regular expression that emulates case
650 insensitive matching in the "C" locale. We cannot generate a case
651 insensitive regular expression because in Turkish locales, 'i' and 'I'
652 are not equal modulo case conversion. */
653
654 /* Copy the literal mnemonic out of the insn. */
655 for (; *mnem; mnem++)
656 {
657 char c = *mnem;
658
659 if (ISALPHA (c))
660 {
661 *rx++ = '[';
662 *rx++ = TOLOWER (c);
663 *rx++ = TOUPPER (c);
664 *rx++ = ']';
665 }
666 else
667 *rx++ = c;
668 }
669
670 /* Copy any remaining literals from the syntax string into the rx. */
671 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
672 {
673 if (CGEN_SYNTAX_CHAR_P (* syn))
674 {
675 char c = CGEN_SYNTAX_CHAR (* syn);
676
677 switch (c)
678 {
679 /* Escape any regex metacharacters in the syntax. */
680 case '.': case '[': case '\\':
681 case '*': case '^': case '$':
682
683#ifdef CGEN_ESCAPE_EXTENDED_REGEX
684 case '?': case '{': case '}':
685 case '(': case ')': case '*':
686 case '|': case '+': case ']':
687#endif
688 *rx++ = '\\';
689 *rx++ = c;
690 break;
691
692 default:
693 if (ISALPHA (c))
694 {
695 *rx++ = '[';
696 *rx++ = TOLOWER (c);
697 *rx++ = TOUPPER (c);
698 *rx++ = ']';
699 }
700 else
701 *rx++ = c;
702 break;
703 }
704 }
705 else
706 {
707 /* Replace non-syntax fields with globs. */
708 *rx++ = '.';
709 *rx++ = '*';
710 }
711 }
712
713 /* Trailing whitespace ok. */
714 * rx++ = '[';
715 * rx++ = ' ';
716 * rx++ = '\t';
717 * rx++ = ']';
718 * rx++ = '*';
719
720 /* But anchor it after that. */
721 * rx++ = '$';
722 * rx = '\0';
723
724 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
725 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
726
727 if (reg_err == 0)
728 return NULL;
729 else
730 {
731 static char msg[80];
732
733 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
734 regfree ((regex_t *) CGEN_INSN_RX (insn));
735 free (CGEN_INSN_RX (insn));
736 (CGEN_INSN_RX (insn)) = NULL;
737 return msg;
738 }
739}
740
741\f
742/* Default insn parser.
743
744 The syntax string is scanned and operands are parsed and stored in FIELDS.
745 Relocs are queued as we go via other callbacks.
746
747 ??? Note that this is currently an all-or-nothing parser. If we fail to
748 parse the instruction, we return 0 and the caller will start over from
749 the beginning. Backtracking will be necessary in parsing subexpressions,
750 but that can be handled there. Not handling backtracking here may get
751 expensive in the case of the m68k. Deal with later.
752
753 Returns NULL for success, an error message for failure. */
754
755static const char *
756parse_insn_normal (CGEN_CPU_DESC cd,
757 const CGEN_INSN *insn,
758 const char **strp,
759 CGEN_FIELDS *fields)
760{
761 /* ??? Runtime added insns not handled yet. */
762 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
763 const char *str = *strp;
764 const char *errmsg;
765 const char *p;
766 const CGEN_SYNTAX_CHAR_TYPE * syn;
767#ifdef CGEN_MNEMONIC_OPERANDS
768 /* FIXME: wip */
769 int past_opcode_p;
770#endif
771
772 /* For now we assume the mnemonic is first (there are no leading operands).
773 We can parse it without needing to set up operand parsing.
774 GAS's input scrubber will ensure mnemonics are lowercase, but we may
775 not be called from GAS. */
776 p = CGEN_INSN_MNEMONIC (insn);
777 while (*p && TOLOWER (*p) == TOLOWER (*str))
778 ++p, ++str;
779
780 if (* p)
781 return _("unrecognized instruction");
782
783#ifndef CGEN_MNEMONIC_OPERANDS
784 if (* str && ! ISSPACE (* str))
785 return _("unrecognized instruction");
786#endif
787
788 CGEN_INIT_PARSE (cd);
789 cgen_init_parse_operand (cd);
790#ifdef CGEN_MNEMONIC_OPERANDS
791 past_opcode_p = 0;
792#endif
793
794 /* We don't check for (*str != '\0') here because we want to parse
795 any trailing fake arguments in the syntax string. */
796 syn = CGEN_SYNTAX_STRING (syntax);
797
798 /* Mnemonics come first for now, ensure valid string. */
799 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
800 abort ();
801
802 ++syn;
803
804 while (* syn != 0)
805 {
806 /* Non operand chars must match exactly. */
807 if (CGEN_SYNTAX_CHAR_P (* syn))
808 {
809 /* FIXME: While we allow for non-GAS callers above, we assume the
810 first char after the mnemonic part is a space. */
811 /* FIXME: We also take inappropriate advantage of the fact that
812 GAS's input scrubber will remove extraneous blanks. */
813 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
814 {
815#ifdef CGEN_MNEMONIC_OPERANDS
816 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
817 past_opcode_p = 1;
818#endif
819 ++ syn;
820 ++ str;
821 }
822 else if (*str)
823 {
824 /* Syntax char didn't match. Can't be this insn. */
825 static char msg [80];
826
827 /* xgettext:c-format */
828 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
829 CGEN_SYNTAX_CHAR(*syn), *str);
830 return msg;
831 }
832 else
833 {
834 /* Ran out of input. */
835 static char msg [80];
836
837 /* xgettext:c-format */
838 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
839 CGEN_SYNTAX_CHAR(*syn));
840 return msg;
841 }
842 continue;
843 }
844
845 /* We have an operand of some sort. */
846 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
847 &str, fields);
848 if (errmsg)
849 return errmsg;
850
851 /* Done with this operand, continue with next one. */
852 ++ syn;
853 }
854
855 /* If we're at the end of the syntax string, we're done. */
856 if (* syn == 0)
857 {
858 /* FIXME: For the moment we assume a valid `str' can only contain
859 blanks now. IE: We needn't try again with a longer version of
860 the insn and it is assumed that longer versions of insns appear
861 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
862 while (ISSPACE (* str))
863 ++ str;
864
865 if (* str != '\0')
866 return _("junk at end of line"); /* FIXME: would like to include `str' */
867
868 return NULL;
869 }
870
871 /* We couldn't parse it. */
872 return _("unrecognized instruction");
873}
874\f
875/* Main entry point.
876 This routine is called for each instruction to be assembled.
877 STR points to the insn to be assembled.
878 We assume all necessary tables have been initialized.
879 The assembled instruction, less any fixups, is stored in BUF.
880 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
881 still needs to be converted to target byte order, otherwise BUF is an array
882 of bytes in target byte order.
883 The result is a pointer to the insn's entry in the opcode table,
884 or NULL if an error occured (an error message will have already been
885 printed).
886
887 Note that when processing (non-alias) macro-insns,
888 this function recurses.
889
890 ??? It's possible to make this cpu-independent.
891 One would have to deal with a few minor things.
892 At this point in time doing so would be more of a curiosity than useful
893 [for example this file isn't _that_ big], but keeping the possibility in
894 mind helps keep the design clean. */
895
896const CGEN_INSN *
d031aafb 897mt_cgen_assemble_insn (CGEN_CPU_DESC cd,
ac188222
DB		 898 const char *str,
899 CGEN_FIELDS *fields,
900 CGEN_INSN_BYTES_PTR buf,
901 char **errmsg)
902{
903 const char *start;
904 CGEN_INSN_LIST *ilist;
905 const char *parse_errmsg = NULL;
906 const char *insert_errmsg = NULL;
907 int recognized_mnemonic = 0;
908
909 /* Skip leading white space. */
910 while (ISSPACE (* str))
911 ++ str;
912
913 /* The instructions are stored in hashed lists.
914 Get the first in the list. */
915 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
916
917 /* Keep looking until we find a match. */
918 start = str;
919 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
920 {
921 const CGEN_INSN *insn = ilist->insn;
922 recognized_mnemonic = 1;
923
924#ifdef CGEN_VALIDATE_INSN_SUPPORTED
925 /* Not usually needed as unsupported opcodes
926 shouldn't be in the hash lists. */
927 /* Is this insn supported by the selected cpu? */
d031aafb 928 if (! mt_cgen_insn_supported (cd, insn))
ac188222
DB		 929 continue;
930#endif
931 /* If the RELAXED attribute is set, this is an insn that shouldn't be
932 chosen immediately. Instead, it is used during assembler/linker
933 relaxation if possible. */
934 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
935 continue;
936
937 str = start;
938
939 /* Skip this insn if str doesn't look right lexically. */
940 if (CGEN_INSN_RX (insn) != NULL &&
941 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
942 continue;
943
944 /* Allow parse/insert handlers to obtain length of insn. */
945 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
946
947 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
948 if (parse_errmsg != NULL)
949 continue;
950
951 /* ??? 0 is passed for `pc'. */
952 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
953 (bfd_vma) 0);
954 if (insert_errmsg != NULL)
955 continue;
956
957 /* It is up to the caller to actually output the insn and any
958 queued relocs. */
959 return insn;
960 }
961
962 {
963 static char errbuf[150];
964#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
965 const char *tmp_errmsg;
966
967 /* If requesting verbose error messages, use insert_errmsg.
968 Failing that, use parse_errmsg. */
969 tmp_errmsg = (insert_errmsg ? insert_errmsg :
970 parse_errmsg ? parse_errmsg :
971 recognized_mnemonic ?
972 _("unrecognized form of instruction") :
973 _("unrecognized instruction"));
974
975 if (strlen (start) > 50)
976 /* xgettext:c-format */
977 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
978 else
979 /* xgettext:c-format */
980 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
981#else
982 if (strlen (start) > 50)
983 /* xgettext:c-format */
984 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
985 else
986 /* xgettext:c-format */
987 sprintf (errbuf, _("bad instruction `%.50s'"), start);
988#endif
989
990 *errmsg = errbuf;
991 return NULL;
992 }
993}
GDB Binutils - Deliverables
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