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1 | /* Assembler 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-asm.in isn't | |
6 | ||
7 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
8 | ||
9 | This file is part of the GNU Binutils and GDB, the GNU debugger. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software Foundation, Inc., | |
23 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
24 | ||
25 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. | |
26 | Keep that in mind. */ | |
27 | ||
28 | #include "sysdep.h" | |
29 | #include <stdio.h> | |
30 | #include "ansidecl.h" | |
31 | #include "bfd.h" | |
32 | #include "symcat.h" | |
33 | #include "ms1-desc.h" | |
34 | #include "ms1-opc.h" | |
35 | #include "opintl.h" | |
36 | #include "xregex.h" | |
37 | #include "libiberty.h" | |
38 | #include "safe-ctype.h" | |
39 | ||
40 | #undef min | |
41 | #define min(a,b) ((a) < (b) ? (a) : (b)) | |
42 | #undef max | |
43 | #define max(a,b) ((a) > (b) ? (a) : (b)) | |
44 | ||
45 | static const char * parse_insn_normal | |
46 | (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); | |
47 | \f | |
48 | /* -- assembler routines inserted here. */ | |
49 | ||
50 | /* -- asm.c */ | |
51 | static int signed_out_of_bounds (long); | |
52 | static const char * parse_imm16 (CGEN_CPU_DESC, const char **, int, long *); | |
53 | static const char * parse_dup (CGEN_CPU_DESC, const char **, int, long *); | |
54 | static const char * parse_ball (CGEN_CPU_DESC, const char **, int, long *); | |
55 | static const char * parse_xmode (CGEN_CPU_DESC, const char **, int, long *); | |
56 | static const char * parse_rc (CGEN_CPU_DESC, const char **, int, long *); | |
57 | static const char * parse_cbrb (CGEN_CPU_DESC, const char **, int, long *); | |
58 | static const char * parse_rbbc (CGEN_CPU_DESC, const char **, int, long *); | |
59 | static const char * parse_type (CGEN_CPU_DESC, const char **, int, long *); | |
60 | ||
61 | /* Range checking for signed numbers. Returns 0 if acceptable | |
62 | and 1 if the value is out of bounds for a signed quantity. */ | |
63 | ||
64 | static int | |
65 | signed_out_of_bounds (long val) | |
66 | { | |
67 | if ((val < -32768) || (val > 32767)) | |
68 | return 1; | |
69 | return 0; | |
70 | } | |
71 | ||
72 | static const char * | |
73 | parse_imm16 (CGEN_CPU_DESC cd, | |
74 | const char **strp, | |
75 | int opindex, | |
76 | long *valuep) | |
77 | { | |
78 | const char *errmsg; | |
79 | enum cgen_parse_operand_result result_type; | |
80 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; | |
81 | bfd_vma value; | |
82 | ||
83 | /* Is it a control transfer instructions? */ | |
84 | if (opindex == (CGEN_OPERAND_TYPE) MS1_OPERAND_IMM16O) | |
85 | { | |
86 | code = BFD_RELOC_16_PCREL; | |
87 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
88 | & result_type, & value); | |
89 | if (errmsg == NULL) | |
90 | { | |
91 | if (signed_out_of_bounds (value)) | |
92 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
93 | } | |
94 | *valuep = value; | |
95 | return errmsg; | |
96 | } | |
97 | ||
98 | /* If it's not a control transfer instruction, then | |
99 | we have to check for %OP relocating operators. */ | |
100 | if (strncmp (*strp, "%hi16", 5) == 0) | |
101 | { | |
102 | *strp += 5; | |
103 | code = BFD_RELOC_HI16; | |
104 | } | |
105 | else if (strncmp (*strp, "%lo16", 5) == 0) | |
106 | { | |
107 | *strp += 5; | |
108 | code = BFD_RELOC_LO16; | |
109 | } | |
110 | ||
111 | /* If we found a %OP relocating operator, then parse it as an address. | |
112 | If not, we need to parse it as an integer, either signed or unsigned | |
113 | depending on which operand type we have. */ | |
114 | if (code != BFD_RELOC_NONE) | |
115 | { | |
116 | /* %OP relocating operator found. */ | |
117 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
118 | & result_type, & value); | |
119 | if (errmsg == NULL) | |
120 | { | |
121 | switch (result_type) | |
122 | { | |
123 | case (CGEN_PARSE_OPERAND_RESULT_NUMBER): | |
124 | if (code == BFD_RELOC_HI16) | |
125 | value = (value >> 16) & 0xFFFF; | |
126 | else if (code == BFD_RELOC_LO16) | |
127 | value = value & 0xFFFF; | |
128 | else | |
129 | errmsg = _("Biiiig Trouble in parse_imm16!"); | |
130 | break; | |
131 | ||
132 | case (CGEN_PARSE_OPERAND_RESULT_QUEUED): | |
133 | /* No special processing for this case. */ | |
134 | break; | |
135 | ||
136 | default: | |
137 | errmsg = _("%operator operand is not a symbol"); | |
138 | break; | |
139 | } | |
140 | } | |
141 | *valuep = value; | |
142 | } | |
143 | else | |
144 | { | |
145 | /* Parse hex values like 0xffff as unsigned, and sign extend | |
146 | them manually. */ | |
147 | int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MS1_OPERAND_IMM16); | |
148 | ||
149 | if ((*strp)[0] == '0' | |
150 | && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) | |
151 | parse_signed = 0; | |
152 | ||
153 | /* No relocating operator. Parse as an number. */ | |
154 | if (parse_signed) | |
155 | { | |
156 | /* Parse as as signed integer. */ | |
157 | ||
158 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); | |
159 | ||
160 | if (errmsg == NULL) | |
161 | { | |
162 | #if 0 | |
163 | /* Manual range checking is needed for the signed case. */ | |
164 | if (*valuep & 0x8000) | |
165 | value = 0xffff0000 | *valuep; | |
166 | else | |
167 | value = *valuep; | |
168 | ||
169 | if (signed_out_of_bounds (value)) | |
170 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
171 | /* Truncate to 16 bits. This is necessary | |
172 | because cgen will have sign extended *valuep. */ | |
173 | *valuep &= 0xFFFF; | |
174 | #endif | |
175 | } | |
176 | } | |
177 | else | |
178 | { | |
179 | /* MS1_OPERAND_IMM16Z. Parse as an unsigned integer. */ | |
180 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
181 | ||
182 | if (opindex == (CGEN_OPERAND_TYPE)MS1_OPERAND_IMM16 | |
183 | && *valuep >= 0x8000 | |
184 | && *valuep <= 0xffff) | |
185 | *valuep -= 0x10000; | |
186 | } | |
187 | } | |
188 | ||
189 | return errmsg; | |
190 | } | |
191 | ||
192 | ||
193 | static const char * | |
194 | parse_dup (CGEN_CPU_DESC cd, | |
195 | const char **strp, | |
196 | int opindex, | |
197 | long *valuep) | |
198 | { | |
199 | const char *errmsg = NULL; | |
200 | ||
201 | if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) | |
202 | { | |
203 | *strp += 3; | |
204 | *valuep = 1; | |
205 | } | |
206 | else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) | |
207 | { | |
208 | *strp += 2; | |
209 | *valuep = 0; | |
210 | } | |
211 | else | |
212 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
213 | ||
214 | return errmsg; | |
215 | } | |
216 | ||
217 | ||
218 | static const char * | |
219 | parse_ball (CGEN_CPU_DESC cd, | |
220 | const char **strp, | |
221 | int opindex, | |
222 | long *valuep) | |
223 | { | |
224 | const char *errmsg = NULL; | |
225 | ||
226 | if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) | |
227 | { | |
228 | *strp += 3; | |
229 | *valuep = 1; | |
230 | } | |
231 | else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) | |
232 | { | |
233 | *strp += 3; | |
234 | *valuep = 0; | |
235 | } | |
236 | else | |
237 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
238 | ||
239 | return errmsg; | |
240 | } | |
241 | ||
242 | static const char * | |
243 | parse_xmode (CGEN_CPU_DESC cd, | |
244 | const char **strp, | |
245 | int opindex, | |
246 | long *valuep) | |
247 | { | |
248 | const char *errmsg = NULL; | |
249 | ||
250 | if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) | |
251 | { | |
252 | *strp += 2; | |
253 | *valuep = 1; | |
254 | } | |
255 | else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) | |
256 | { | |
257 | *strp += 2; | |
258 | *valuep = 0; | |
259 | } | |
260 | else | |
261 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
262 | ||
263 | return errmsg; | |
264 | } | |
265 | ||
266 | static const char * | |
267 | parse_rc (CGEN_CPU_DESC cd, | |
268 | const char **strp, | |
269 | int opindex, | |
270 | long *valuep) | |
271 | { | |
272 | const char *errmsg = NULL; | |
273 | ||
274 | if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) | |
275 | { | |
276 | *strp += 1; | |
277 | *valuep = 1; | |
278 | } | |
279 | else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) | |
280 | { | |
281 | *strp += 1; | |
282 | *valuep = 0; | |
283 | } | |
284 | else | |
285 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
286 | ||
287 | return errmsg; | |
288 | } | |
289 | ||
290 | static const char * | |
291 | parse_cbrb (CGEN_CPU_DESC cd, | |
292 | const char **strp, | |
293 | int opindex, | |
294 | long *valuep) | |
295 | { | |
296 | const char *errmsg = NULL; | |
297 | ||
298 | if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) | |
299 | { | |
300 | *strp += 2; | |
301 | *valuep = 1; | |
302 | } | |
303 | else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) | |
304 | { | |
305 | *strp += 2; | |
306 | *valuep = 0; | |
307 | } | |
308 | else | |
309 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
310 | ||
311 | return errmsg; | |
312 | } | |
313 | ||
314 | static const char * | |
315 | parse_rbbc (CGEN_CPU_DESC cd, | |
316 | const char **strp, | |
317 | int opindex, | |
318 | long *valuep) | |
319 | { | |
320 | const char *errmsg = NULL; | |
321 | ||
322 | if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) | |
323 | { | |
324 | *strp += 2; | |
325 | *valuep = 0; | |
326 | } | |
327 | else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) | |
328 | { | |
329 | *strp += 3; | |
330 | *valuep = 1; | |
331 | } | |
332 | else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) | |
333 | { | |
334 | *strp += 3; | |
335 | *valuep = 2; | |
336 | } | |
337 | else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) | |
338 | { | |
339 | *strp += 2; | |
340 | *valuep = 3; | |
341 | } | |
342 | else | |
343 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
344 | ||
345 | return errmsg; | |
346 | } | |
347 | ||
348 | static const char * | |
349 | parse_type (CGEN_CPU_DESC cd, | |
350 | const char **strp, | |
351 | int opindex, | |
352 | long *valuep) | |
353 | { | |
354 | const char *errmsg = NULL; | |
355 | ||
356 | if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) | |
357 | { | |
358 | *strp += 3; | |
359 | *valuep = 0; | |
360 | } | |
361 | else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) | |
362 | { | |
363 | *strp += 4; | |
364 | *valuep = 1; | |
365 | } | |
366 | else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) | |
367 | { | |
368 | *strp += 2; | |
369 | *valuep = 2; | |
370 | } | |
371 | else | |
372 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
373 | ||
374 | if ((errmsg == NULL) && (*valuep == 3)) | |
375 | errmsg = _("invalid operand. type may have values 0,1,2 only."); | |
376 | ||
377 | return errmsg; | |
378 | } | |
379 | ||
380 | /* -- dis.c */ | |
381 | ||
382 | const char * ms1_cgen_parse_operand | |
383 | PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)); | |
384 | ||
385 | /* Main entry point for operand parsing. | |
386 | ||
387 | This function is basically just a big switch statement. Earlier versions | |
388 | used tables to look up the function to use, but | |
389 | - if the table contains both assembler and disassembler functions then | |
390 | the disassembler contains much of the assembler and vice-versa, | |
391 | - there's a lot of inlining possibilities as things grow, | |
392 | - using a switch statement avoids the function call overhead. | |
393 | ||
394 | This function could be moved into `parse_insn_normal', but keeping it | |
395 | separate makes clear the interface between `parse_insn_normal' and each of | |
396 | the handlers. */ | |
397 | ||
398 | const char * | |
399 | ms1_cgen_parse_operand (cd, opindex, strp, fields) | |
400 | CGEN_CPU_DESC cd; | |
401 | int opindex; | |
402 | const char ** strp; | |
403 | CGEN_FIELDS * fields; | |
404 | { | |
405 | const char * errmsg = NULL; | |
406 | /* Used by scalar operands that still need to be parsed. */ | |
407 | long junk ATTRIBUTE_UNUSED; | |
408 | ||
409 | switch (opindex) | |
410 | { | |
411 | case MS1_OPERAND_A23 : | |
412 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_A23, (unsigned long *) (& fields->f_a23)); | |
413 | break; | |
414 | case MS1_OPERAND_BALL : | |
415 | errmsg = parse_ball (cd, strp, MS1_OPERAND_BALL, (unsigned long *) (& fields->f_ball)); | |
416 | break; | |
417 | case MS1_OPERAND_BALL2 : | |
418 | errmsg = parse_ball (cd, strp, MS1_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2)); | |
419 | break; | |
420 | case MS1_OPERAND_BANKADDR : | |
421 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr)); | |
422 | break; | |
423 | case MS1_OPERAND_BRC : | |
424 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_BRC, (unsigned long *) (& fields->f_brc)); | |
425 | break; | |
426 | case MS1_OPERAND_BRC2 : | |
427 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2)); | |
428 | break; | |
429 | case MS1_OPERAND_CBRB : | |
430 | errmsg = parse_cbrb (cd, strp, MS1_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb)); | |
431 | break; | |
432 | case MS1_OPERAND_CBS : | |
433 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CBS, (unsigned long *) (& fields->f_cbs)); | |
434 | break; | |
435 | case MS1_OPERAND_CBX : | |
436 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CBX, (unsigned long *) (& fields->f_cbx)); | |
437 | break; | |
438 | case MS1_OPERAND_CCB : | |
439 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CCB, (unsigned long *) (& fields->f_ccb)); | |
440 | break; | |
441 | case MS1_OPERAND_CDB : | |
442 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CDB, (unsigned long *) (& fields->f_cdb)); | |
443 | break; | |
444 | case MS1_OPERAND_CELL : | |
445 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CELL, (unsigned long *) (& fields->f_cell)); | |
446 | break; | |
447 | case MS1_OPERAND_COLNUM : | |
448 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum)); | |
449 | break; | |
450 | case MS1_OPERAND_CONTNUM : | |
451 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum)); | |
452 | break; | |
453 | case MS1_OPERAND_CR : | |
454 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CR, (unsigned long *) (& fields->f_cr)); | |
455 | break; | |
456 | case MS1_OPERAND_CTXDISP : | |
457 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp)); | |
458 | break; | |
459 | case MS1_OPERAND_DUP : | |
460 | errmsg = parse_dup (cd, strp, MS1_OPERAND_DUP, (unsigned long *) (& fields->f_dup)); | |
461 | break; | |
462 | case MS1_OPERAND_FBDISP : | |
463 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp)); | |
464 | break; | |
465 | case MS1_OPERAND_FBINCR : | |
466 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr)); | |
467 | break; | |
468 | case MS1_OPERAND_FRDR : | |
469 | errmsg = cgen_parse_keyword (cd, strp, & ms1_cgen_opval_h_spr, & fields->f_dr); | |
470 | break; | |
471 | case MS1_OPERAND_FRDRRR : | |
472 | errmsg = cgen_parse_keyword (cd, strp, & ms1_cgen_opval_h_spr, & fields->f_drrr); | |
473 | break; | |
474 | case MS1_OPERAND_FRSR1 : | |
475 | errmsg = cgen_parse_keyword (cd, strp, & ms1_cgen_opval_h_spr, & fields->f_sr1); | |
476 | break; | |
477 | case MS1_OPERAND_FRSR2 : | |
478 | errmsg = cgen_parse_keyword (cd, strp, & ms1_cgen_opval_h_spr, & fields->f_sr2); | |
479 | break; | |
480 | case MS1_OPERAND_ID : | |
481 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_ID, (unsigned long *) (& fields->f_id)); | |
482 | break; | |
483 | case MS1_OPERAND_IMM16 : | |
484 | errmsg = parse_imm16 (cd, strp, MS1_OPERAND_IMM16, (long *) (& fields->f_imm16s)); | |
485 | break; | |
486 | case MS1_OPERAND_IMM16O : | |
487 | errmsg = parse_imm16 (cd, strp, MS1_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s)); | |
488 | break; | |
489 | case MS1_OPERAND_IMM16Z : | |
490 | errmsg = parse_imm16 (cd, strp, MS1_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u)); | |
491 | break; | |
492 | case MS1_OPERAND_INCAMT : | |
493 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt)); | |
494 | break; | |
495 | case MS1_OPERAND_INCR : | |
496 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_INCR, (unsigned long *) (& fields->f_incr)); | |
497 | break; | |
498 | case MS1_OPERAND_LENGTH : | |
499 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_LENGTH, (unsigned long *) (& fields->f_length)); | |
500 | break; | |
501 | case MS1_OPERAND_MASK : | |
502 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_MASK, (unsigned long *) (& fields->f_mask)); | |
503 | break; | |
504 | case MS1_OPERAND_MASK1 : | |
505 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1)); | |
506 | break; | |
507 | case MS1_OPERAND_MODE : | |
508 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_MODE, (unsigned long *) (& fields->f_mode)); | |
509 | break; | |
510 | case MS1_OPERAND_PERM : | |
511 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_PERM, (unsigned long *) (& fields->f_perm)); | |
512 | break; | |
513 | case MS1_OPERAND_RBBC : | |
514 | errmsg = parse_rbbc (cd, strp, MS1_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc)); | |
515 | break; | |
516 | case MS1_OPERAND_RC : | |
517 | errmsg = parse_rc (cd, strp, MS1_OPERAND_RC, (unsigned long *) (& fields->f_rc)); | |
518 | break; | |
519 | case MS1_OPERAND_RC1 : | |
520 | errmsg = parse_rc (cd, strp, MS1_OPERAND_RC1, (unsigned long *) (& fields->f_rc1)); | |
521 | break; | |
522 | case MS1_OPERAND_RC2 : | |
523 | errmsg = parse_rc (cd, strp, MS1_OPERAND_RC2, (unsigned long *) (& fields->f_rc2)); | |
524 | break; | |
525 | case MS1_OPERAND_RCNUM : | |
526 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum)); | |
527 | break; | |
528 | case MS1_OPERAND_RDA : | |
529 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_RDA, (unsigned long *) (& fields->f_rda)); | |
530 | break; | |
531 | case MS1_OPERAND_ROWNUM : | |
532 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum)); | |
533 | break; | |
534 | case MS1_OPERAND_ROWNUM1 : | |
535 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1)); | |
536 | break; | |
537 | case MS1_OPERAND_ROWNUM2 : | |
538 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2)); | |
539 | break; | |
540 | case MS1_OPERAND_SIZE : | |
541 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_SIZE, (unsigned long *) (& fields->f_size)); | |
542 | break; | |
543 | case MS1_OPERAND_TYPE : | |
544 | errmsg = parse_type (cd, strp, MS1_OPERAND_TYPE, (unsigned long *) (& fields->f_type)); | |
545 | break; | |
546 | case MS1_OPERAND_WR : | |
547 | errmsg = cgen_parse_unsigned_integer (cd, strp, MS1_OPERAND_WR, (unsigned long *) (& fields->f_wr)); | |
548 | break; | |
549 | case MS1_OPERAND_XMODE : | |
550 | errmsg = parse_xmode (cd, strp, MS1_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode)); | |
551 | break; | |
552 | ||
553 | default : | |
554 | /* xgettext:c-format */ | |
555 | fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); | |
556 | abort (); | |
557 | } | |
558 | ||
559 | return errmsg; | |
560 | } | |
561 | ||
562 | cgen_parse_fn * const ms1_cgen_parse_handlers[] = | |
563 | { | |
564 | parse_insn_normal, | |
565 | }; | |
566 | ||
567 | void | |
568 | ms1_cgen_init_asm (cd) | |
569 | CGEN_CPU_DESC cd; | |
570 | { | |
571 | ms1_cgen_init_opcode_table (cd); | |
572 | ms1_cgen_init_ibld_table (cd); | |
573 | cd->parse_handlers = & ms1_cgen_parse_handlers[0]; | |
574 | cd->parse_operand = ms1_cgen_parse_operand; | |
575 | } | |
576 | ||
577 | \f | |
578 | ||
579 | /* Regex construction routine. | |
580 | ||
581 | This translates an opcode syntax string into a regex string, | |
582 | by replacing any non-character syntax element (such as an | |
583 | opcode) with the pattern '.*' | |
584 | ||
585 | It then compiles the regex and stores it in the opcode, for | |
586 | later use by ms1_cgen_assemble_insn | |
587 | ||
588 | Returns NULL for success, an error message for failure. */ | |
589 | ||
590 | char * | |
591 | ms1_cgen_build_insn_regex (CGEN_INSN *insn) | |
592 | { | |
593 | CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); | |
594 | const char *mnem = CGEN_INSN_MNEMONIC (insn); | |
595 | char rxbuf[CGEN_MAX_RX_ELEMENTS]; | |
596 | char *rx = rxbuf; | |
597 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
598 | int reg_err; | |
599 | ||
600 | syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); | |
601 | ||
602 | /* Mnemonics come first in the syntax string. */ | |
603 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
604 | return _("missing mnemonic in syntax string"); | |
605 | ++syn; | |
606 | ||
607 | /* Generate a case sensitive regular expression that emulates case | |
608 | insensitive matching in the "C" locale. We cannot generate a case | |
609 | insensitive regular expression because in Turkish locales, 'i' and 'I' | |
610 | are not equal modulo case conversion. */ | |
611 | ||
612 | /* Copy the literal mnemonic out of the insn. */ | |
613 | for (; *mnem; mnem++) | |
614 | { | |
615 | char c = *mnem; | |
616 | ||
617 | if (ISALPHA (c)) | |
618 | { | |
619 | *rx++ = '['; | |
620 | *rx++ = TOLOWER (c); | |
621 | *rx++ = TOUPPER (c); | |
622 | *rx++ = ']'; | |
623 | } | |
624 | else | |
625 | *rx++ = c; | |
626 | } | |
627 | ||
628 | /* Copy any remaining literals from the syntax string into the rx. */ | |
629 | for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) | |
630 | { | |
631 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
632 | { | |
633 | char c = CGEN_SYNTAX_CHAR (* syn); | |
634 | ||
635 | switch (c) | |
636 | { | |
637 | /* Escape any regex metacharacters in the syntax. */ | |
638 | case '.': case '[': case '\\': | |
639 | case '*': case '^': case '$': | |
640 | ||
641 | #ifdef CGEN_ESCAPE_EXTENDED_REGEX | |
642 | case '?': case '{': case '}': | |
643 | case '(': case ')': case '*': | |
644 | case '|': case '+': case ']': | |
645 | #endif | |
646 | *rx++ = '\\'; | |
647 | *rx++ = c; | |
648 | break; | |
649 | ||
650 | default: | |
651 | if (ISALPHA (c)) | |
652 | { | |
653 | *rx++ = '['; | |
654 | *rx++ = TOLOWER (c); | |
655 | *rx++ = TOUPPER (c); | |
656 | *rx++ = ']'; | |
657 | } | |
658 | else | |
659 | *rx++ = c; | |
660 | break; | |
661 | } | |
662 | } | |
663 | else | |
664 | { | |
665 | /* Replace non-syntax fields with globs. */ | |
666 | *rx++ = '.'; | |
667 | *rx++ = '*'; | |
668 | } | |
669 | } | |
670 | ||
671 | /* Trailing whitespace ok. */ | |
672 | * rx++ = '['; | |
673 | * rx++ = ' '; | |
674 | * rx++ = '\t'; | |
675 | * rx++ = ']'; | |
676 | * rx++ = '*'; | |
677 | ||
678 | /* But anchor it after that. */ | |
679 | * rx++ = '$'; | |
680 | * rx = '\0'; | |
681 | ||
682 | CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); | |
683 | reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); | |
684 | ||
685 | if (reg_err == 0) | |
686 | return NULL; | |
687 | else | |
688 | { | |
689 | static char msg[80]; | |
690 | ||
691 | regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); | |
692 | regfree ((regex_t *) CGEN_INSN_RX (insn)); | |
693 | free (CGEN_INSN_RX (insn)); | |
694 | (CGEN_INSN_RX (insn)) = NULL; | |
695 | return msg; | |
696 | } | |
697 | } | |
698 | ||
699 | \f | |
700 | /* Default insn parser. | |
701 | ||
702 | The syntax string is scanned and operands are parsed and stored in FIELDS. | |
703 | Relocs are queued as we go via other callbacks. | |
704 | ||
705 | ??? Note that this is currently an all-or-nothing parser. If we fail to | |
706 | parse the instruction, we return 0 and the caller will start over from | |
707 | the beginning. Backtracking will be necessary in parsing subexpressions, | |
708 | but that can be handled there. Not handling backtracking here may get | |
709 | expensive in the case of the m68k. Deal with later. | |
710 | ||
711 | Returns NULL for success, an error message for failure. */ | |
712 | ||
713 | static const char * | |
714 | parse_insn_normal (CGEN_CPU_DESC cd, | |
715 | const CGEN_INSN *insn, | |
716 | const char **strp, | |
717 | CGEN_FIELDS *fields) | |
718 | { | |
719 | /* ??? Runtime added insns not handled yet. */ | |
720 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
721 | const char *str = *strp; | |
722 | const char *errmsg; | |
723 | const char *p; | |
724 | const CGEN_SYNTAX_CHAR_TYPE * syn; | |
725 | #ifdef CGEN_MNEMONIC_OPERANDS | |
726 | /* FIXME: wip */ | |
727 | int past_opcode_p; | |
728 | #endif | |
729 | ||
730 | /* For now we assume the mnemonic is first (there are no leading operands). | |
731 | We can parse it without needing to set up operand parsing. | |
732 | GAS's input scrubber will ensure mnemonics are lowercase, but we may | |
733 | not be called from GAS. */ | |
734 | p = CGEN_INSN_MNEMONIC (insn); | |
735 | while (*p && TOLOWER (*p) == TOLOWER (*str)) | |
736 | ++p, ++str; | |
737 | ||
738 | if (* p) | |
739 | return _("unrecognized instruction"); | |
740 | ||
741 | #ifndef CGEN_MNEMONIC_OPERANDS | |
742 | if (* str && ! ISSPACE (* str)) | |
743 | return _("unrecognized instruction"); | |
744 | #endif | |
745 | ||
746 | CGEN_INIT_PARSE (cd); | |
747 | cgen_init_parse_operand (cd); | |
748 | #ifdef CGEN_MNEMONIC_OPERANDS | |
749 | past_opcode_p = 0; | |
750 | #endif | |
751 | ||
752 | /* We don't check for (*str != '\0') here because we want to parse | |
753 | any trailing fake arguments in the syntax string. */ | |
754 | syn = CGEN_SYNTAX_STRING (syntax); | |
755 | ||
756 | /* Mnemonics come first for now, ensure valid string. */ | |
757 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
758 | abort (); | |
759 | ||
760 | ++syn; | |
761 | ||
762 | while (* syn != 0) | |
763 | { | |
764 | /* Non operand chars must match exactly. */ | |
765 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
766 | { | |
767 | /* FIXME: While we allow for non-GAS callers above, we assume the | |
768 | first char after the mnemonic part is a space. */ | |
769 | /* FIXME: We also take inappropriate advantage of the fact that | |
770 | GAS's input scrubber will remove extraneous blanks. */ | |
771 | if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) | |
772 | { | |
773 | #ifdef CGEN_MNEMONIC_OPERANDS | |
774 | if (CGEN_SYNTAX_CHAR(* syn) == ' ') | |
775 | past_opcode_p = 1; | |
776 | #endif | |
777 | ++ syn; | |
778 | ++ str; | |
779 | } | |
780 | else if (*str) | |
781 | { | |
782 | /* Syntax char didn't match. Can't be this insn. */ | |
783 | static char msg [80]; | |
784 | ||
785 | /* xgettext:c-format */ | |
786 | sprintf (msg, _("syntax error (expected char `%c', found `%c')"), | |
787 | CGEN_SYNTAX_CHAR(*syn), *str); | |
788 | return msg; | |
789 | } | |
790 | else | |
791 | { | |
792 | /* Ran out of input. */ | |
793 | static char msg [80]; | |
794 | ||
795 | /* xgettext:c-format */ | |
796 | sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), | |
797 | CGEN_SYNTAX_CHAR(*syn)); | |
798 | return msg; | |
799 | } | |
800 | continue; | |
801 | } | |
802 | ||
803 | /* We have an operand of some sort. */ | |
804 | errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), | |
805 | &str, fields); | |
806 | if (errmsg) | |
807 | return errmsg; | |
808 | ||
809 | /* Done with this operand, continue with next one. */ | |
810 | ++ syn; | |
811 | } | |
812 | ||
813 | /* If we're at the end of the syntax string, we're done. */ | |
814 | if (* syn == 0) | |
815 | { | |
816 | /* FIXME: For the moment we assume a valid `str' can only contain | |
817 | blanks now. IE: We needn't try again with a longer version of | |
818 | the insn and it is assumed that longer versions of insns appear | |
819 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
820 | while (ISSPACE (* str)) | |
821 | ++ str; | |
822 | ||
823 | if (* str != '\0') | |
824 | return _("junk at end of line"); /* FIXME: would like to include `str' */ | |
825 | ||
826 | return NULL; | |
827 | } | |
828 | ||
829 | /* We couldn't parse it. */ | |
830 | return _("unrecognized instruction"); | |
831 | } | |
832 | \f | |
833 | /* Main entry point. | |
834 | This routine is called for each instruction to be assembled. | |
835 | STR points to the insn to be assembled. | |
836 | We assume all necessary tables have been initialized. | |
837 | The assembled instruction, less any fixups, is stored in BUF. | |
838 | Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value | |
839 | still needs to be converted to target byte order, otherwise BUF is an array | |
840 | of bytes in target byte order. | |
841 | The result is a pointer to the insn's entry in the opcode table, | |
842 | or NULL if an error occured (an error message will have already been | |
843 | printed). | |
844 | ||
845 | Note that when processing (non-alias) macro-insns, | |
846 | this function recurses. | |
847 | ||
848 | ??? It's possible to make this cpu-independent. | |
849 | One would have to deal with a few minor things. | |
850 | At this point in time doing so would be more of a curiosity than useful | |
851 | [for example this file isn't _that_ big], but keeping the possibility in | |
852 | mind helps keep the design clean. */ | |
853 | ||
854 | const CGEN_INSN * | |
855 | ms1_cgen_assemble_insn (CGEN_CPU_DESC cd, | |
856 | const char *str, | |
857 | CGEN_FIELDS *fields, | |
858 | CGEN_INSN_BYTES_PTR buf, | |
859 | char **errmsg) | |
860 | { | |
861 | const char *start; | |
862 | CGEN_INSN_LIST *ilist; | |
863 | const char *parse_errmsg = NULL; | |
864 | const char *insert_errmsg = NULL; | |
865 | int recognized_mnemonic = 0; | |
866 | ||
867 | /* Skip leading white space. */ | |
868 | while (ISSPACE (* str)) | |
869 | ++ str; | |
870 | ||
871 | /* The instructions are stored in hashed lists. | |
872 | Get the first in the list. */ | |
873 | ilist = CGEN_ASM_LOOKUP_INSN (cd, str); | |
874 | ||
875 | /* Keep looking until we find a match. */ | |
876 | start = str; | |
877 | for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) | |
878 | { | |
879 | const CGEN_INSN *insn = ilist->insn; | |
880 | recognized_mnemonic = 1; | |
881 | ||
882 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED | |
883 | /* Not usually needed as unsupported opcodes | |
884 | shouldn't be in the hash lists. */ | |
885 | /* Is this insn supported by the selected cpu? */ | |
886 | if (! ms1_cgen_insn_supported (cd, insn)) | |
887 | continue; | |
888 | #endif | |
889 | /* If the RELAXED attribute is set, this is an insn that shouldn't be | |
890 | chosen immediately. Instead, it is used during assembler/linker | |
891 | relaxation if possible. */ | |
892 | if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) | |
893 | continue; | |
894 | ||
895 | str = start; | |
896 | ||
897 | /* Skip this insn if str doesn't look right lexically. */ | |
898 | if (CGEN_INSN_RX (insn) != NULL && | |
899 | regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) | |
900 | continue; | |
901 | ||
902 | /* Allow parse/insert handlers to obtain length of insn. */ | |
903 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
904 | ||
905 | parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); | |
906 | if (parse_errmsg != NULL) | |
907 | continue; | |
908 | ||
909 | /* ??? 0 is passed for `pc'. */ | |
910 | insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, | |
911 | (bfd_vma) 0); | |
912 | if (insert_errmsg != NULL) | |
913 | continue; | |
914 | ||
915 | /* It is up to the caller to actually output the insn and any | |
916 | queued relocs. */ | |
917 | return insn; | |
918 | } | |
919 | ||
920 | { | |
921 | static char errbuf[150]; | |
922 | #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS | |
923 | const char *tmp_errmsg; | |
924 | ||
925 | /* If requesting verbose error messages, use insert_errmsg. | |
926 | Failing that, use parse_errmsg. */ | |
927 | tmp_errmsg = (insert_errmsg ? insert_errmsg : | |
928 | parse_errmsg ? parse_errmsg : | |
929 | recognized_mnemonic ? | |
930 | _("unrecognized form of instruction") : | |
931 | _("unrecognized instruction")); | |
932 | ||
933 | if (strlen (start) > 50) | |
934 | /* xgettext:c-format */ | |
935 | sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); | |
936 | else | |
937 | /* xgettext:c-format */ | |
938 | sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); | |
939 | #else | |
940 | if (strlen (start) > 50) | |
941 | /* xgettext:c-format */ | |
942 | sprintf (errbuf, _("bad instruction `%.50s...'"), start); | |
943 | else | |
944 | /* xgettext:c-format */ | |
945 | sprintf (errbuf, _("bad instruction `%.50s'"), start); | |
946 | #endif | |
947 | ||
948 | *errmsg = errbuf; | |
949 | return NULL; | |
950 | } | |
951 | } | |
952 | \f | |
953 | #if 0 /* This calls back to GAS which we can't do without care. */ | |
954 | ||
955 | /* Record each member of OPVALS in the assembler's symbol table. | |
956 | This lets GAS parse registers for us. | |
957 | ??? Interesting idea but not currently used. */ | |
958 | ||
959 | /* Record each member of OPVALS in the assembler's symbol table. | |
960 | FIXME: Not currently used. */ | |
961 | ||
962 | void | |
963 | ms1_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals) | |
964 | { | |
965 | CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL); | |
966 | const CGEN_KEYWORD_ENTRY * ke; | |
967 | ||
968 | while ((ke = cgen_keyword_search_next (& search)) != NULL) | |
969 | { | |
970 | #if 0 /* Unnecessary, should be done in the search routine. */ | |
971 | if (! ms1_cgen_opval_supported (ke)) | |
972 | continue; | |
973 | #endif | |
974 | cgen_asm_record_register (cd, ke->name, ke->value); | |
975 | } | |
976 | } | |
977 | ||
978 | #endif /* 0 */ |