Commit | Line | Data |
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252b5132 RH |
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 | ||
060d22b0 | 7 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
252b5132 RH |
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 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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" | |
252b5132 RH |
29 | #include <stdio.h> |
30 | #include "ansidecl.h" | |
31 | #include "bfd.h" | |
32 | #include "symcat.h" | |
33 | #include "m32r-desc.h" | |
34 | #include "m32r-opc.h" | |
35 | #include "opintl.h" | |
fc7bc883 | 36 | #include "xregex.h" |
fc05c67f | 37 | #include "libiberty.h" |
37111cc7 | 38 | #include "safe-ctype.h" |
252b5132 | 39 | |
37111cc7 | 40 | #undef min |
252b5132 | 41 | #define min(a,b) ((a) < (b) ? (a) : (b)) |
37111cc7 | 42 | #undef max |
252b5132 RH |
43 | #define max(a,b) ((a) > (b) ? (a) : (b)) |
44 | ||
0e2ee3ca | 45 | static const char * parse_insn_normal |
ffead7ae | 46 | (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); |
252b5132 | 47 | \f |
37111cc7 | 48 | /* -- assembler routines inserted here. */ |
252b5132 RH |
49 | |
50 | /* -- asm.c */ | |
0e2ee3ca NC |
51 | static const char * parse_hash |
52 | PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
53 | static const char * parse_hi16 | |
54 | PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
55 | static const char * parse_slo16 | |
56 | PARAMS ((CGEN_CPU_DESC, const char **, int, long *)); | |
57 | static const char * parse_ulo16 | |
58 | PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
252b5132 RH |
59 | |
60 | /* Handle '#' prefixes (i.e. skip over them). */ | |
61 | ||
62 | static const char * | |
63 | parse_hash (cd, strp, opindex, valuep) | |
fc05c67f | 64 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
252b5132 | 65 | const char **strp; |
fc05c67f NC |
66 | int opindex ATTRIBUTE_UNUSED; |
67 | unsigned long *valuep ATTRIBUTE_UNUSED; | |
252b5132 RH |
68 | { |
69 | if (**strp == '#') | |
70 | ++*strp; | |
71 | return NULL; | |
72 | } | |
73 | ||
74 | /* Handle shigh(), high(). */ | |
75 | ||
76 | static const char * | |
77 | parse_hi16 (cd, strp, opindex, valuep) | |
78 | CGEN_CPU_DESC cd; | |
79 | const char **strp; | |
80 | int opindex; | |
81 | unsigned long *valuep; | |
82 | { | |
83 | const char *errmsg; | |
84 | enum cgen_parse_operand_result result_type; | |
85 | bfd_vma value; | |
86 | ||
87 | if (**strp == '#') | |
88 | ++*strp; | |
89 | ||
90 | if (strncasecmp (*strp, "high(", 5) == 0) | |
91 | { | |
92 | *strp += 5; | |
93 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_ULO, | |
94 | &result_type, &value); | |
95 | if (**strp != ')') | |
96 | return "missing `)'"; | |
97 | ++*strp; | |
98 | if (errmsg == NULL | |
99 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
100 | value >>= 16; | |
101 | *valuep = value; | |
102 | return errmsg; | |
103 | } | |
104 | else if (strncasecmp (*strp, "shigh(", 6) == 0) | |
105 | { | |
106 | *strp += 6; | |
107 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_SLO, | |
108 | &result_type, &value); | |
109 | if (**strp != ')') | |
110 | return "missing `)'"; | |
111 | ++*strp; | |
112 | if (errmsg == NULL | |
113 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
114 | value = (value >> 16) + (value & 0x8000 ? 1 : 0); | |
115 | *valuep = value; | |
116 | return errmsg; | |
117 | } | |
118 | ||
119 | return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
120 | } | |
121 | ||
122 | /* Handle low() in a signed context. Also handle sda(). | |
123 | The signedness of the value doesn't matter to low(), but this also | |
124 | handles the case where low() isn't present. */ | |
125 | ||
126 | static const char * | |
127 | parse_slo16 (cd, strp, opindex, valuep) | |
128 | CGEN_CPU_DESC cd; | |
129 | const char **strp; | |
130 | int opindex; | |
131 | long *valuep; | |
132 | { | |
133 | const char *errmsg; | |
134 | enum cgen_parse_operand_result result_type; | |
135 | bfd_vma value; | |
136 | ||
137 | if (**strp == '#') | |
138 | ++*strp; | |
139 | ||
140 | if (strncasecmp (*strp, "low(", 4) == 0) | |
141 | { | |
142 | *strp += 4; | |
143 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16, | |
144 | &result_type, &value); | |
145 | if (**strp != ')') | |
146 | return "missing `)'"; | |
147 | ++*strp; | |
148 | if (errmsg == NULL | |
149 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
88845958 NC |
150 | { |
151 | value &= 0xffff; | |
152 | if (value & 0x8000) | |
153 | value |= 0xffff0000; | |
154 | } | |
252b5132 RH |
155 | *valuep = value; |
156 | return errmsg; | |
157 | } | |
158 | ||
159 | if (strncasecmp (*strp, "sda(", 4) == 0) | |
160 | { | |
161 | *strp += 4; | |
162 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_SDA16, | |
163 | NULL, &value); | |
164 | if (**strp != ')') | |
165 | return "missing `)'"; | |
166 | ++*strp; | |
167 | *valuep = value; | |
168 | return errmsg; | |
169 | } | |
170 | ||
171 | return cgen_parse_signed_integer (cd, strp, opindex, valuep); | |
172 | } | |
173 | ||
174 | /* Handle low() in an unsigned context. | |
175 | The signedness of the value doesn't matter to low(), but this also | |
176 | handles the case where low() isn't present. */ | |
177 | ||
178 | static const char * | |
179 | parse_ulo16 (cd, strp, opindex, valuep) | |
180 | CGEN_CPU_DESC cd; | |
181 | const char **strp; | |
182 | int opindex; | |
183 | unsigned long *valuep; | |
184 | { | |
185 | const char *errmsg; | |
186 | enum cgen_parse_operand_result result_type; | |
187 | bfd_vma value; | |
188 | ||
189 | if (**strp == '#') | |
190 | ++*strp; | |
191 | ||
192 | if (strncasecmp (*strp, "low(", 4) == 0) | |
193 | { | |
194 | *strp += 4; | |
195 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16, | |
196 | &result_type, &value); | |
197 | if (**strp != ')') | |
198 | return "missing `)'"; | |
199 | ++*strp; | |
200 | if (errmsg == NULL | |
201 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
202 | value &= 0xffff; | |
203 | *valuep = value; | |
204 | return errmsg; | |
205 | } | |
206 | ||
207 | return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
208 | } | |
209 | ||
210 | /* -- */ | |
211 | ||
0e2ee3ca NC |
212 | const char * m32r_cgen_parse_operand |
213 | PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)); | |
214 | ||
252b5132 RH |
215 | /* Main entry point for operand parsing. |
216 | ||
217 | This function is basically just a big switch statement. Earlier versions | |
218 | used tables to look up the function to use, but | |
219 | - if the table contains both assembler and disassembler functions then | |
220 | the disassembler contains much of the assembler and vice-versa, | |
221 | - there's a lot of inlining possibilities as things grow, | |
222 | - using a switch statement avoids the function call overhead. | |
223 | ||
224 | This function could be moved into `parse_insn_normal', but keeping it | |
225 | separate makes clear the interface between `parse_insn_normal' and each of | |
9a2e995d | 226 | the handlers. */ |
252b5132 RH |
227 | |
228 | const char * | |
229 | m32r_cgen_parse_operand (cd, opindex, strp, fields) | |
230 | CGEN_CPU_DESC cd; | |
231 | int opindex; | |
232 | const char ** strp; | |
233 | CGEN_FIELDS * fields; | |
234 | { | |
eb1b03df DE |
235 | const char * errmsg = NULL; |
236 | /* Used by scalar operands that still need to be parsed. */ | |
0e2ee3ca | 237 | long junk ATTRIBUTE_UNUSED; |
252b5132 RH |
238 | |
239 | switch (opindex) | |
240 | { | |
1fa60b5d DE |
241 | case M32R_OPERAND_ACC : |
242 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_acc); | |
243 | break; | |
244 | case M32R_OPERAND_ACCD : | |
245 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accd); | |
246 | break; | |
247 | case M32R_OPERAND_ACCS : | |
248 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accs); | |
249 | break; | |
252b5132 RH |
250 | case M32R_OPERAND_DCR : |
251 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r1); | |
252 | break; | |
253 | case M32R_OPERAND_DISP16 : | |
254 | { | |
255 | bfd_vma value; | |
256 | errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP16, 0, NULL, & value); | |
257 | fields->f_disp16 = value; | |
258 | } | |
259 | break; | |
260 | case M32R_OPERAND_DISP24 : | |
261 | { | |
262 | bfd_vma value; | |
263 | errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP24, 0, NULL, & value); | |
264 | fields->f_disp24 = value; | |
265 | } | |
266 | break; | |
267 | case M32R_OPERAND_DISP8 : | |
268 | { | |
269 | bfd_vma value; | |
270 | errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP8, 0, NULL, & value); | |
271 | fields->f_disp8 = value; | |
272 | } | |
273 | break; | |
274 | case M32R_OPERAND_DR : | |
275 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1); | |
276 | break; | |
277 | case M32R_OPERAND_HASH : | |
eb1b03df | 278 | errmsg = parse_hash (cd, strp, M32R_OPERAND_HASH, &junk); |
252b5132 RH |
279 | break; |
280 | case M32R_OPERAND_HI16 : | |
281 | errmsg = parse_hi16 (cd, strp, M32R_OPERAND_HI16, &fields->f_hi16); | |
282 | break; | |
1fa60b5d DE |
283 | case M32R_OPERAND_IMM1 : |
284 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_IMM1, &fields->f_imm1); | |
285 | break; | |
252b5132 RH |
286 | case M32R_OPERAND_SCR : |
287 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r2); | |
288 | break; | |
289 | case M32R_OPERAND_SIMM16 : | |
290 | errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM16, &fields->f_simm16); | |
291 | break; | |
292 | case M32R_OPERAND_SIMM8 : | |
293 | errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM8, &fields->f_simm8); | |
294 | break; | |
295 | case M32R_OPERAND_SLO16 : | |
296 | errmsg = parse_slo16 (cd, strp, M32R_OPERAND_SLO16, &fields->f_simm16); | |
297 | break; | |
298 | case M32R_OPERAND_SR : | |
299 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2); | |
300 | break; | |
301 | case M32R_OPERAND_SRC1 : | |
302 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1); | |
303 | break; | |
304 | case M32R_OPERAND_SRC2 : | |
305 | errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2); | |
306 | break; | |
307 | case M32R_OPERAND_UIMM16 : | |
308 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM16, &fields->f_uimm16); | |
309 | break; | |
310 | case M32R_OPERAND_UIMM24 : | |
311 | { | |
312 | bfd_vma value; | |
313 | errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_UIMM24, 0, NULL, & value); | |
314 | fields->f_uimm24 = value; | |
315 | } | |
316 | break; | |
88845958 NC |
317 | case M32R_OPERAND_UIMM3 : |
318 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM3, &fields->f_uimm3); | |
319 | break; | |
252b5132 RH |
320 | case M32R_OPERAND_UIMM4 : |
321 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM4, &fields->f_uimm4); | |
322 | break; | |
323 | case M32R_OPERAND_UIMM5 : | |
324 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM5, &fields->f_uimm5); | |
325 | break; | |
88845958 NC |
326 | case M32R_OPERAND_UIMM8 : |
327 | errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM8, &fields->f_uimm8); | |
328 | break; | |
252b5132 RH |
329 | case M32R_OPERAND_ULO16 : |
330 | errmsg = parse_ulo16 (cd, strp, M32R_OPERAND_ULO16, &fields->f_uimm16); | |
331 | break; | |
332 | ||
333 | default : | |
334 | /* xgettext:c-format */ | |
335 | fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); | |
336 | abort (); | |
337 | } | |
338 | ||
339 | return errmsg; | |
340 | } | |
341 | ||
342 | cgen_parse_fn * const m32r_cgen_parse_handlers[] = | |
343 | { | |
344 | parse_insn_normal, | |
345 | }; | |
346 | ||
347 | void | |
348 | m32r_cgen_init_asm (cd) | |
349 | CGEN_CPU_DESC cd; | |
350 | { | |
351 | m32r_cgen_init_opcode_table (cd); | |
352 | m32r_cgen_init_ibld_table (cd); | |
353 | cd->parse_handlers = & m32r_cgen_parse_handlers[0]; | |
354 | cd->parse_operand = m32r_cgen_parse_operand; | |
355 | } | |
356 | ||
fc7bc883 RH |
357 | \f |
358 | ||
37111cc7 | 359 | /* Regex construction routine. |
fc7bc883 | 360 | |
37111cc7 NC |
361 | This translates an opcode syntax string into a regex string, |
362 | by replacing any non-character syntax element (such as an | |
363 | opcode) with the pattern '.*' | |
fc7bc883 | 364 | |
37111cc7 NC |
365 | It then compiles the regex and stores it in the opcode, for |
366 | later use by m32r_cgen_assemble_insn | |
fc7bc883 | 367 | |
37111cc7 | 368 | Returns NULL for success, an error message for failure. */ |
fc7bc883 RH |
369 | |
370 | char * | |
ffead7ae | 371 | m32r_cgen_build_insn_regex (CGEN_INSN *insn) |
fc7bc883 | 372 | { |
fc05c67f | 373 | CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); |
fc7bc883 | 374 | const char *mnem = CGEN_INSN_MNEMONIC (insn); |
fc7bc883 RH |
375 | char rxbuf[CGEN_MAX_RX_ELEMENTS]; |
376 | char *rx = rxbuf; | |
377 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
378 | int reg_err; | |
379 | ||
380 | syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); | |
381 | ||
f3a55c17 NC |
382 | /* Mnemonics come first in the syntax string. */ |
383 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
384 | return _("missing mnemonic in syntax string"); | |
fc7bc883 RH |
385 | ++syn; |
386 | ||
f3a55c17 NC |
387 | /* Generate a case sensitive regular expression that emulates case |
388 | insensitive matching in the "C" locale. We cannot generate a case | |
389 | insensitive regular expression because in Turkish locales, 'i' and 'I' | |
390 | are not equal modulo case conversion. */ | |
fc7bc883 | 391 | |
f3a55c17 NC |
392 | /* Copy the literal mnemonic out of the insn. */ |
393 | for (; *mnem; mnem++) | |
394 | { | |
395 | char c = *mnem; | |
396 | ||
397 | if (ISALPHA (c)) | |
398 | { | |
399 | *rx++ = '['; | |
400 | *rx++ = TOLOWER (c); | |
401 | *rx++ = TOUPPER (c); | |
402 | *rx++ = ']'; | |
403 | } | |
404 | else | |
405 | *rx++ = c; | |
406 | } | |
407 | ||
408 | /* Copy any remaining literals from the syntax string into the rx. */ | |
409 | for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) | |
fc7bc883 RH |
410 | { |
411 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
412 | { | |
f3a55c17 NC |
413 | char c = CGEN_SYNTAX_CHAR (* syn); |
414 | ||
415 | switch (c) | |
416 | { | |
417 | /* Escape any regex metacharacters in the syntax. */ | |
418 | case '.': case '[': case '\\': | |
419 | case '*': case '^': case '$': | |
fc7bc883 RH |
420 | |
421 | #ifdef CGEN_ESCAPE_EXTENDED_REGEX | |
f3a55c17 NC |
422 | case '?': case '{': case '}': |
423 | case '(': case ')': case '*': | |
424 | case '|': case '+': case ']': | |
fc7bc883 | 425 | #endif |
f3a55c17 NC |
426 | *rx++ = '\\'; |
427 | *rx++ = c; | |
428 | break; | |
429 | ||
430 | default: | |
431 | if (ISALPHA (c)) | |
432 | { | |
433 | *rx++ = '['; | |
434 | *rx++ = TOLOWER (c); | |
435 | *rx++ = TOUPPER (c); | |
436 | *rx++ = ']'; | |
437 | } | |
438 | else | |
439 | *rx++ = c; | |
440 | break; | |
441 | } | |
fc7bc883 RH |
442 | } |
443 | else | |
444 | { | |
f3a55c17 NC |
445 | /* Replace non-syntax fields with globs. */ |
446 | *rx++ = '.'; | |
447 | *rx++ = '*'; | |
fc7bc883 RH |
448 | } |
449 | } | |
450 | ||
f3a55c17 | 451 | /* Trailing whitespace ok. */ |
fc7bc883 RH |
452 | * rx++ = '['; |
453 | * rx++ = ' '; | |
454 | * rx++ = '\t'; | |
455 | * rx++ = ']'; | |
456 | * rx++ = '*'; | |
457 | ||
f3a55c17 | 458 | /* But anchor it after that. */ |
fc7bc883 RH |
459 | * rx++ = '$'; |
460 | * rx = '\0'; | |
461 | ||
462 | CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); | |
f3a55c17 | 463 | reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); |
fc7bc883 RH |
464 | |
465 | if (reg_err == 0) | |
466 | return NULL; | |
467 | else | |
468 | { | |
469 | static char msg[80]; | |
f3a55c17 | 470 | |
fc7bc883 RH |
471 | regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); |
472 | regfree ((regex_t *) CGEN_INSN_RX (insn)); | |
473 | free (CGEN_INSN_RX (insn)); | |
474 | (CGEN_INSN_RX (insn)) = NULL; | |
37111cc7 | 475 | return msg; |
fc7bc883 RH |
476 | } |
477 | } | |
478 | ||
252b5132 RH |
479 | \f |
480 | /* Default insn parser. | |
481 | ||
482 | The syntax string is scanned and operands are parsed and stored in FIELDS. | |
483 | Relocs are queued as we go via other callbacks. | |
484 | ||
485 | ??? Note that this is currently an all-or-nothing parser. If we fail to | |
486 | parse the instruction, we return 0 and the caller will start over from | |
487 | the beginning. Backtracking will be necessary in parsing subexpressions, | |
488 | but that can be handled there. Not handling backtracking here may get | |
489 | expensive in the case of the m68k. Deal with later. | |
490 | ||
f3a55c17 | 491 | Returns NULL for success, an error message for failure. */ |
252b5132 RH |
492 | |
493 | static const char * | |
ffead7ae MM |
494 | parse_insn_normal (CGEN_CPU_DESC cd, |
495 | const CGEN_INSN *insn, | |
496 | const char **strp, | |
497 | CGEN_FIELDS *fields) | |
252b5132 RH |
498 | { |
499 | /* ??? Runtime added insns not handled yet. */ | |
500 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
501 | const char *str = *strp; | |
502 | const char *errmsg; | |
503 | const char *p; | |
b3466c39 | 504 | const CGEN_SYNTAX_CHAR_TYPE * syn; |
252b5132 RH |
505 | #ifdef CGEN_MNEMONIC_OPERANDS |
506 | /* FIXME: wip */ | |
507 | int past_opcode_p; | |
508 | #endif | |
509 | ||
510 | /* For now we assume the mnemonic is first (there are no leading operands). | |
511 | We can parse it without needing to set up operand parsing. | |
512 | GAS's input scrubber will ensure mnemonics are lowercase, but we may | |
513 | not be called from GAS. */ | |
514 | p = CGEN_INSN_MNEMONIC (insn); | |
37111cc7 | 515 | while (*p && TOLOWER (*p) == TOLOWER (*str)) |
252b5132 | 516 | ++p, ++str; |
1fa60b5d DE |
517 | |
518 | if (* p) | |
519 | return _("unrecognized instruction"); | |
520 | ||
521 | #ifndef CGEN_MNEMONIC_OPERANDS | |
37111cc7 | 522 | if (* str && ! ISSPACE (* str)) |
252b5132 | 523 | return _("unrecognized instruction"); |
1fa60b5d | 524 | #endif |
252b5132 RH |
525 | |
526 | CGEN_INIT_PARSE (cd); | |
527 | cgen_init_parse_operand (cd); | |
528 | #ifdef CGEN_MNEMONIC_OPERANDS | |
529 | past_opcode_p = 0; | |
530 | #endif | |
531 | ||
532 | /* We don't check for (*str != '\0') here because we want to parse | |
533 | any trailing fake arguments in the syntax string. */ | |
534 | syn = CGEN_SYNTAX_STRING (syntax); | |
535 | ||
536 | /* Mnemonics come first for now, ensure valid string. */ | |
537 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
538 | abort (); | |
539 | ||
540 | ++syn; | |
541 | ||
542 | while (* syn != 0) | |
543 | { | |
544 | /* Non operand chars must match exactly. */ | |
545 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
546 | { | |
1fa60b5d DE |
547 | /* FIXME: While we allow for non-GAS callers above, we assume the |
548 | first char after the mnemonic part is a space. */ | |
549 | /* FIXME: We also take inappropriate advantage of the fact that | |
550 | GAS's input scrubber will remove extraneous blanks. */ | |
37111cc7 | 551 | if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) |
252b5132 RH |
552 | { |
553 | #ifdef CGEN_MNEMONIC_OPERANDS | |
b3466c39 | 554 | if (CGEN_SYNTAX_CHAR(* syn) == ' ') |
252b5132 RH |
555 | past_opcode_p = 1; |
556 | #endif | |
557 | ++ syn; | |
558 | ++ str; | |
559 | } | |
b3466c39 | 560 | else if (*str) |
252b5132 RH |
561 | { |
562 | /* Syntax char didn't match. Can't be this insn. */ | |
6bb95a0f | 563 | static char msg [80]; |
f3a55c17 | 564 | |
6bb95a0f DB |
565 | /* xgettext:c-format */ |
566 | sprintf (msg, _("syntax error (expected char `%c', found `%c')"), | |
b3466c39 DB |
567 | CGEN_SYNTAX_CHAR(*syn), *str); |
568 | return msg; | |
569 | } | |
570 | else | |
571 | { | |
572 | /* Ran out of input. */ | |
573 | static char msg [80]; | |
f3a55c17 | 574 | |
b3466c39 DB |
575 | /* xgettext:c-format */ |
576 | sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), | |
577 | CGEN_SYNTAX_CHAR(*syn)); | |
6bb95a0f | 578 | return msg; |
252b5132 RH |
579 | } |
580 | continue; | |
581 | } | |
582 | ||
583 | /* We have an operand of some sort. */ | |
a978a3e5 | 584 | errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), |
252b5132 RH |
585 | &str, fields); |
586 | if (errmsg) | |
587 | return errmsg; | |
588 | ||
589 | /* Done with this operand, continue with next one. */ | |
590 | ++ syn; | |
591 | } | |
592 | ||
593 | /* If we're at the end of the syntax string, we're done. */ | |
b3466c39 | 594 | if (* syn == 0) |
252b5132 RH |
595 | { |
596 | /* FIXME: For the moment we assume a valid `str' can only contain | |
597 | blanks now. IE: We needn't try again with a longer version of | |
598 | the insn and it is assumed that longer versions of insns appear | |
599 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
37111cc7 | 600 | while (ISSPACE (* str)) |
252b5132 RH |
601 | ++ str; |
602 | ||
603 | if (* str != '\0') | |
604 | return _("junk at end of line"); /* FIXME: would like to include `str' */ | |
605 | ||
606 | return NULL; | |
607 | } | |
608 | ||
609 | /* We couldn't parse it. */ | |
610 | return _("unrecognized instruction"); | |
611 | } | |
612 | \f | |
613 | /* Main entry point. | |
614 | This routine is called for each instruction to be assembled. | |
615 | STR points to the insn to be assembled. | |
616 | We assume all necessary tables have been initialized. | |
617 | The assembled instruction, less any fixups, is stored in BUF. | |
618 | Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value | |
619 | still needs to be converted to target byte order, otherwise BUF is an array | |
620 | of bytes in target byte order. | |
621 | The result is a pointer to the insn's entry in the opcode table, | |
622 | or NULL if an error occured (an error message will have already been | |
623 | printed). | |
624 | ||
625 | Note that when processing (non-alias) macro-insns, | |
626 | this function recurses. | |
627 | ||
628 | ??? It's possible to make this cpu-independent. | |
629 | One would have to deal with a few minor things. | |
630 | At this point in time doing so would be more of a curiosity than useful | |
631 | [for example this file isn't _that_ big], but keeping the possibility in | |
632 | mind helps keep the design clean. */ | |
633 | ||
634 | const CGEN_INSN * | |
ffead7ae MM |
635 | m32r_cgen_assemble_insn (CGEN_CPU_DESC cd, |
636 | const char *str, | |
637 | CGEN_FIELDS *fields, | |
638 | CGEN_INSN_BYTES_PTR buf, | |
639 | char **errmsg) | |
252b5132 RH |
640 | { |
641 | const char *start; | |
642 | CGEN_INSN_LIST *ilist; | |
b3466c39 DB |
643 | const char *parse_errmsg = NULL; |
644 | const char *insert_errmsg = NULL; | |
fc7bc883 | 645 | int recognized_mnemonic = 0; |
252b5132 RH |
646 | |
647 | /* Skip leading white space. */ | |
37111cc7 | 648 | while (ISSPACE (* str)) |
252b5132 RH |
649 | ++ str; |
650 | ||
651 | /* The instructions are stored in hashed lists. | |
652 | Get the first in the list. */ | |
653 | ilist = CGEN_ASM_LOOKUP_INSN (cd, str); | |
654 | ||
655 | /* Keep looking until we find a match. */ | |
252b5132 RH |
656 | start = str; |
657 | for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) | |
658 | { | |
659 | const CGEN_INSN *insn = ilist->insn; | |
fc7bc883 | 660 | recognized_mnemonic = 1; |
252b5132 | 661 | |
cfcdbe97 | 662 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
f3a55c17 NC |
663 | /* Not usually needed as unsupported opcodes |
664 | shouldn't be in the hash lists. */ | |
252b5132 RH |
665 | /* Is this insn supported by the selected cpu? */ |
666 | if (! m32r_cgen_insn_supported (cd, insn)) | |
667 | continue; | |
668 | #endif | |
b11dcf4e | 669 | /* If the RELAXED attribute is set, this is an insn that shouldn't be |
252b5132 RH |
670 | chosen immediately. Instead, it is used during assembler/linker |
671 | relaxation if possible. */ | |
b11dcf4e | 672 | if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) |
252b5132 RH |
673 | continue; |
674 | ||
675 | str = start; | |
676 | ||
f3a55c17 | 677 | /* Skip this insn if str doesn't look right lexically. */ |
fc7bc883 RH |
678 | if (CGEN_INSN_RX (insn) != NULL && |
679 | regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) | |
680 | continue; | |
681 | ||
252b5132 RH |
682 | /* Allow parse/insert handlers to obtain length of insn. */ |
683 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
684 | ||
b3466c39 DB |
685 | parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); |
686 | if (parse_errmsg != NULL) | |
6bb95a0f | 687 | continue; |
252b5132 | 688 | |
f3a55c17 | 689 | /* ??? 0 is passed for `pc'. */ |
b3466c39 DB |
690 | insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, |
691 | (bfd_vma) 0); | |
692 | if (insert_errmsg != NULL) | |
6bb95a0f DB |
693 | continue; |
694 | ||
695 | /* It is up to the caller to actually output the insn and any | |
696 | queued relocs. */ | |
697 | return insn; | |
252b5132 RH |
698 | } |
699 | ||
252b5132 | 700 | { |
cfcdbe97 | 701 | static char errbuf[150]; |
52646233 | 702 | #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS |
b3466c39 | 703 | const char *tmp_errmsg; |
cfcdbe97 | 704 | |
b3466c39 | 705 | /* If requesting verbose error messages, use insert_errmsg. |
f3a55c17 | 706 | Failing that, use parse_errmsg. */ |
b3466c39 DB |
707 | tmp_errmsg = (insert_errmsg ? insert_errmsg : |
708 | parse_errmsg ? parse_errmsg : | |
f3a55c17 NC |
709 | recognized_mnemonic ? |
710 | _("unrecognized form of instruction") : | |
b3466c39 DB |
711 | _("unrecognized instruction")); |
712 | ||
cfcdbe97 AH |
713 | if (strlen (start) > 50) |
714 | /* xgettext:c-format */ | |
715 | sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); | |
716 | else | |
717 | /* xgettext:c-format */ | |
718 | sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); | |
719 | #else | |
252b5132 RH |
720 | if (strlen (start) > 50) |
721 | /* xgettext:c-format */ | |
722 | sprintf (errbuf, _("bad instruction `%.50s...'"), start); | |
723 | else | |
724 | /* xgettext:c-format */ | |
725 | sprintf (errbuf, _("bad instruction `%.50s'"), start); | |
cfcdbe97 | 726 | #endif |
252b5132 RH |
727 | |
728 | *errmsg = errbuf; | |
729 | return NULL; | |
730 | } | |
731 | } | |
732 | \f | |
733 | #if 0 /* This calls back to GAS which we can't do without care. */ | |
734 | ||
735 | /* Record each member of OPVALS in the assembler's symbol table. | |
736 | This lets GAS parse registers for us. | |
737 | ??? Interesting idea but not currently used. */ | |
738 | ||
739 | /* Record each member of OPVALS in the assembler's symbol table. | |
740 | FIXME: Not currently used. */ | |
741 | ||
742 | void | |
ffead7ae | 743 | m32r_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals) |
252b5132 RH |
744 | { |
745 | CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL); | |
746 | const CGEN_KEYWORD_ENTRY * ke; | |
747 | ||
748 | while ((ke = cgen_keyword_search_next (& search)) != NULL) | |
749 | { | |
750 | #if 0 /* Unnecessary, should be done in the search routine. */ | |
751 | if (! m32r_cgen_opval_supported (ke)) | |
752 | continue; | |
753 | #endif | |
754 | cgen_asm_record_register (cd, ke->name, ke->value); | |
755 | } | |
756 | } | |
757 | ||
758 | #endif /* 0 */ |