Commit | Line | Data |
---|---|---|
47b1a55a SC |
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 | 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" | |
29 | #include <stdio.h> | |
30 | #include "ansidecl.h" | |
31 | #include "bfd.h" | |
32 | #include "symcat.h" | |
33 | #include "iq2000-desc.h" | |
34 | #include "iq2000-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 | |
ffead7ae | 46 | (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); |
47b1a55a SC |
47 | \f |
48 | /* -- assembler routines inserted here. */ | |
49 | ||
50 | /* -- asm.c */ | |
4030fa5a NC |
51 | |
52 | #include "safe-ctype.h" | |
53 | ||
54 | static int iq2000_cgen_isa_register PARAMS ((const char **)); | |
bc18c937 | 55 | static const char * parse_jtargq10 PARAMS ((CGEN_CPU_DESC, const char **, int, int, enum cgen_parse_operand_result *, bfd_vma *)); |
33b71eeb | 56 | static const char * parse_mimm PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); |
47b1a55a SC |
57 | static const char * parse_imm PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); |
58 | static const char * parse_hi16 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
33b71eeb NC |
59 | static const char * parse_lo16 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); |
60 | static const char * parse_mlo16 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
47b1a55a SC |
61 | |
62 | /* Special check to ensure that instruction exists for given machine */ | |
63 | int | |
64 | iq2000_cgen_insn_supported (cd, insn) | |
65 | CGEN_CPU_DESC cd; | |
4030fa5a | 66 | const CGEN_INSN *insn; |
47b1a55a SC |
67 | { |
68 | int machs = cd->machs; | |
69 | ||
70 | return ((CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH) & machs) != 0); | |
71 | } | |
72 | ||
73 | static int iq2000_cgen_isa_register (strp) | |
74 | const char **strp; | |
75 | { | |
76 | int len; | |
77 | int ch1, ch2; | |
78 | if (**strp == 'r' || **strp == 'R') | |
79 | { | |
80 | len = strlen (*strp); | |
81 | if (len == 2) | |
82 | { | |
83 | ch1 = (*strp)[1]; | |
84 | if ('0' <= ch1 && ch1 <= '9') | |
85 | return 1; | |
86 | } | |
87 | else if (len == 3) | |
88 | { | |
89 | ch1 = (*strp)[1]; | |
90 | ch2 = (*strp)[2]; | |
91 | if (('1' <= ch1 && ch1 <= '2') && ('0' <= ch2 && ch2 <= '9')) | |
92 | return 1; | |
93 | if ('3' == ch1 && (ch2 == '0' || ch2 == '1')) | |
94 | return 1; | |
95 | } | |
96 | } | |
4030fa5a | 97 | if (**strp == '%' && TOLOWER((*strp)[1]) != 'l' && TOLOWER((*strp)[1]) != 'h') |
47b1a55a SC |
98 | return 1; |
99 | return 0; | |
100 | } | |
101 | ||
102 | /* Handle negated literal. */ | |
103 | ||
104 | static const char * | |
105 | parse_mimm (cd, strp, opindex, valuep) | |
106 | CGEN_CPU_DESC cd; | |
107 | const char **strp; | |
108 | int opindex; | |
33b71eeb | 109 | unsigned long *valuep; |
47b1a55a SC |
110 | { |
111 | const char *errmsg; | |
47b1a55a | 112 | |
33b71eeb | 113 | /* Verify this isn't a register. */ |
47b1a55a SC |
114 | if (iq2000_cgen_isa_register (strp)) |
115 | errmsg = _("immediate value cannot be register"); | |
116 | else | |
117 | { | |
118 | long value; | |
119 | ||
120 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); | |
121 | if (errmsg == NULL) | |
122 | { | |
123 | long x = (-value) & 0xFFFF0000; | |
33b71eeb | 124 | |
4030fa5a | 125 | if (x != 0 && x != (long) 0xFFFF0000) |
47b1a55a SC |
126 | errmsg = _("immediate value out of range"); |
127 | else | |
128 | *valuep = (-value & 0xFFFF); | |
129 | } | |
130 | } | |
131 | return errmsg; | |
132 | } | |
133 | ||
134 | /* Handle signed/unsigned literal. */ | |
135 | ||
136 | static const char * | |
137 | parse_imm (cd, strp, opindex, valuep) | |
138 | CGEN_CPU_DESC cd; | |
139 | const char **strp; | |
140 | int opindex; | |
141 | unsigned long *valuep; | |
142 | { | |
143 | const char *errmsg; | |
47b1a55a SC |
144 | |
145 | if (iq2000_cgen_isa_register (strp)) | |
146 | errmsg = _("immediate value cannot be register"); | |
147 | else | |
148 | { | |
149 | long value; | |
150 | ||
151 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); | |
152 | if (errmsg == NULL) | |
153 | { | |
154 | long x = value & 0xFFFF0000; | |
4030fa5a | 155 | if (x != 0 && x != (long) 0xFFFF0000) |
47b1a55a SC |
156 | errmsg = _("immediate value out of range"); |
157 | else | |
158 | *valuep = (value & 0xFFFF); | |
159 | } | |
160 | } | |
161 | return errmsg; | |
162 | } | |
163 | ||
164 | /* Handle iq10 21-bit jmp offset. */ | |
165 | ||
166 | static const char * | |
167 | parse_jtargq10 (cd, strp, opindex, reloc, type_addr, valuep) | |
168 | CGEN_CPU_DESC cd; | |
169 | const char **strp; | |
170 | int opindex; | |
4030fa5a NC |
171 | int reloc ATTRIBUTE_UNUSED; |
172 | enum cgen_parse_operand_result *type_addr ATTRIBUTE_UNUSED; | |
bc18c937 | 173 | bfd_vma *valuep; |
47b1a55a SC |
174 | { |
175 | const char *errmsg; | |
176 | bfd_vma value; | |
177 | enum cgen_parse_operand_result result_type = CGEN_PARSE_OPERAND_RESULT_NUMBER; | |
178 | ||
179 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IQ2000_OFFSET_21, | |
180 | &result_type, &value); | |
181 | if (errmsg == NULL && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
182 | { | |
bc18c937 | 183 | /* Check value is within 23-bits (remembering that 2-bit shift right will occur). */ |
47b1a55a SC |
184 | if (value > 0x7fffff) |
185 | return _("21-bit offset out of range"); | |
186 | } | |
187 | *valuep = (value & 0x7FFFFF); | |
188 | return errmsg; | |
189 | } | |
190 | ||
191 | /* Handle high(). */ | |
192 | ||
193 | static const char * | |
194 | parse_hi16 (cd, strp, opindex, valuep) | |
195 | CGEN_CPU_DESC cd; | |
196 | const char **strp; | |
197 | int opindex; | |
198 | unsigned long *valuep; | |
199 | { | |
200 | if (strncasecmp (*strp, "%hi(", 4) == 0) | |
201 | { | |
202 | enum cgen_parse_operand_result result_type; | |
203 | bfd_vma value; | |
204 | const char *errmsg; | |
205 | ||
206 | *strp += 4; | |
207 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16, | |
208 | &result_type, &value); | |
209 | if (**strp != ')') | |
210 | return _("missing `)'"); | |
211 | ||
212 | ++*strp; | |
213 | if (errmsg == NULL | |
214 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
215 | { | |
216 | /* if value has top-bit of %lo on, then it will | |
217 | sign-propagate and so we compensate by adding | |
218 | 1 to the resultant %hi value */ | |
219 | if (value & 0x8000) | |
220 | value += 0x10000; | |
221 | value >>= 16; | |
222 | } | |
223 | *valuep = value; | |
224 | ||
225 | return errmsg; | |
226 | } | |
227 | ||
228 | /* we add %uhi in case a user just wants the high 16-bits or is using | |
229 | an insn like ori for %lo which does not sign-propagate */ | |
230 | if (strncasecmp (*strp, "%uhi(", 5) == 0) | |
231 | { | |
232 | enum cgen_parse_operand_result result_type; | |
233 | bfd_vma value; | |
234 | const char *errmsg; | |
235 | ||
236 | *strp += 5; | |
237 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IQ2000_UHI16, | |
238 | &result_type, &value); | |
239 | if (**strp != ')') | |
240 | return _("missing `)'"); | |
241 | ||
242 | ++*strp; | |
243 | if (errmsg == NULL | |
244 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
245 | { | |
246 | value >>= 16; | |
247 | } | |
248 | *valuep = value; | |
249 | ||
250 | return errmsg; | |
251 | } | |
252 | ||
253 | return parse_imm (cd, strp, opindex, valuep); | |
254 | } | |
255 | ||
256 | /* Handle %lo in a signed context. | |
257 | The signedness of the value doesn't matter to %lo(), but this also | |
258 | handles the case where %lo() isn't present. */ | |
259 | ||
260 | static const char * | |
261 | parse_lo16 (cd, strp, opindex, valuep) | |
262 | CGEN_CPU_DESC cd; | |
263 | const char **strp; | |
264 | int opindex; | |
33b71eeb | 265 | unsigned long *valuep; |
47b1a55a SC |
266 | { |
267 | if (strncasecmp (*strp, "%lo(", 4) == 0) | |
268 | { | |
269 | const char *errmsg; | |
270 | enum cgen_parse_operand_result result_type; | |
271 | bfd_vma value; | |
272 | ||
273 | *strp += 4; | |
274 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16, | |
275 | &result_type, &value); | |
276 | if (**strp != ')') | |
277 | return _("missing `)'"); | |
278 | ++*strp; | |
279 | if (errmsg == NULL | |
280 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
281 | value &= 0xffff; | |
282 | *valuep = value; | |
283 | return errmsg; | |
284 | } | |
285 | ||
286 | return parse_imm (cd, strp, opindex, valuep); | |
287 | } | |
288 | ||
289 | /* Handle %lo in a negated signed context. | |
290 | The signedness of the value doesn't matter to %lo(), but this also | |
291 | handles the case where %lo() isn't present. */ | |
292 | ||
293 | static const char * | |
294 | parse_mlo16 (cd, strp, opindex, valuep) | |
295 | CGEN_CPU_DESC cd; | |
296 | const char **strp; | |
297 | int opindex; | |
33b71eeb | 298 | unsigned long *valuep; |
47b1a55a SC |
299 | { |
300 | if (strncasecmp (*strp, "%lo(", 4) == 0) | |
301 | { | |
302 | const char *errmsg; | |
303 | enum cgen_parse_operand_result result_type; | |
304 | bfd_vma value; | |
305 | ||
306 | *strp += 4; | |
307 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16, | |
308 | &result_type, &value); | |
309 | if (**strp != ')') | |
310 | return _("missing `)'"); | |
311 | ++*strp; | |
312 | if (errmsg == NULL | |
313 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) | |
314 | value = (-value) & 0xffff; | |
315 | *valuep = value; | |
316 | return errmsg; | |
317 | } | |
318 | ||
319 | return parse_mimm (cd, strp, opindex, valuep); | |
320 | } | |
321 | ||
322 | /* -- */ | |
323 | ||
324 | const char * iq2000_cgen_parse_operand | |
325 | PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)); | |
326 | ||
327 | /* Main entry point for operand parsing. | |
328 | ||
329 | This function is basically just a big switch statement. Earlier versions | |
330 | used tables to look up the function to use, but | |
331 | - if the table contains both assembler and disassembler functions then | |
332 | the disassembler contains much of the assembler and vice-versa, | |
333 | - there's a lot of inlining possibilities as things grow, | |
334 | - using a switch statement avoids the function call overhead. | |
335 | ||
336 | This function could be moved into `parse_insn_normal', but keeping it | |
337 | separate makes clear the interface between `parse_insn_normal' and each of | |
338 | the handlers. */ | |
339 | ||
340 | const char * | |
341 | iq2000_cgen_parse_operand (cd, opindex, strp, fields) | |
342 | CGEN_CPU_DESC cd; | |
343 | int opindex; | |
344 | const char ** strp; | |
345 | CGEN_FIELDS * fields; | |
346 | { | |
347 | const char * errmsg = NULL; | |
348 | /* Used by scalar operands that still need to be parsed. */ | |
349 | long junk ATTRIBUTE_UNUSED; | |
350 | ||
351 | switch (opindex) | |
352 | { | |
4030fa5a | 353 | case IQ2000_OPERAND__INDEX : |
33b71eeb | 354 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND__INDEX, (unsigned long *) (& fields->f_index)); |
4030fa5a | 355 | break; |
47b1a55a SC |
356 | case IQ2000_OPERAND_BASE : |
357 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rs); | |
358 | break; | |
359 | case IQ2000_OPERAND_BASEOFF : | |
360 | { | |
361 | bfd_vma value; | |
362 | errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_BASEOFF, 0, NULL, & value); | |
363 | fields->f_imm = value; | |
364 | } | |
365 | break; | |
366 | case IQ2000_OPERAND_BITNUM : | |
33b71eeb | 367 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_BITNUM, (unsigned long *) (& fields->f_rt)); |
47b1a55a SC |
368 | break; |
369 | case IQ2000_OPERAND_BYTECOUNT : | |
33b71eeb | 370 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_BYTECOUNT, (unsigned long *) (& fields->f_bytecount)); |
47b1a55a SC |
371 | break; |
372 | case IQ2000_OPERAND_CAM_Y : | |
33b71eeb | 373 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CAM_Y, (unsigned long *) (& fields->f_cam_y)); |
47b1a55a SC |
374 | break; |
375 | case IQ2000_OPERAND_CAM_Z : | |
33b71eeb | 376 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CAM_Z, (unsigned long *) (& fields->f_cam_z)); |
47b1a55a SC |
377 | break; |
378 | case IQ2000_OPERAND_CM_3FUNC : | |
33b71eeb | 379 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_3FUNC, (unsigned long *) (& fields->f_cm_3func)); |
47b1a55a SC |
380 | break; |
381 | case IQ2000_OPERAND_CM_3Z : | |
33b71eeb | 382 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_3Z, (unsigned long *) (& fields->f_cm_3z)); |
47b1a55a SC |
383 | break; |
384 | case IQ2000_OPERAND_CM_4FUNC : | |
33b71eeb | 385 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_4FUNC, (unsigned long *) (& fields->f_cm_4func)); |
47b1a55a SC |
386 | break; |
387 | case IQ2000_OPERAND_CM_4Z : | |
33b71eeb | 388 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_4Z, (unsigned long *) (& fields->f_cm_4z)); |
47b1a55a SC |
389 | break; |
390 | case IQ2000_OPERAND_COUNT : | |
33b71eeb | 391 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_COUNT, (unsigned long *) (& fields->f_count)); |
47b1a55a SC |
392 | break; |
393 | case IQ2000_OPERAND_EXECODE : | |
33b71eeb | 394 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_EXECODE, (unsigned long *) (& fields->f_excode)); |
47b1a55a SC |
395 | break; |
396 | case IQ2000_OPERAND_HI16 : | |
33b71eeb | 397 | errmsg = parse_hi16 (cd, strp, IQ2000_OPERAND_HI16, (unsigned long *) (& fields->f_imm)); |
47b1a55a SC |
398 | break; |
399 | case IQ2000_OPERAND_IMM : | |
33b71eeb | 400 | errmsg = parse_imm (cd, strp, IQ2000_OPERAND_IMM, (unsigned long *) (& fields->f_imm)); |
47b1a55a | 401 | break; |
47b1a55a SC |
402 | case IQ2000_OPERAND_JMPTARG : |
403 | { | |
404 | bfd_vma value; | |
405 | errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_JMPTARG, 0, NULL, & value); | |
406 | fields->f_jtarg = value; | |
407 | } | |
408 | break; | |
409 | case IQ2000_OPERAND_JMPTARGQ10 : | |
410 | { | |
33b71eeb NC |
411 | bfd_vma value = 0; |
412 | ||
47b1a55a SC |
413 | errmsg = parse_jtargq10 (cd, strp, IQ2000_OPERAND_JMPTARGQ10, 0, NULL, & value); |
414 | fields->f_jtargq10 = value; | |
415 | } | |
416 | break; | |
417 | case IQ2000_OPERAND_LO16 : | |
33b71eeb | 418 | errmsg = parse_lo16 (cd, strp, IQ2000_OPERAND_LO16, (unsigned long *) (& fields->f_imm)); |
47b1a55a SC |
419 | break; |
420 | case IQ2000_OPERAND_MASK : | |
33b71eeb | 421 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASK, (unsigned long *) (& fields->f_mask)); |
47b1a55a SC |
422 | break; |
423 | case IQ2000_OPERAND_MASKL : | |
33b71eeb | 424 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKL, (unsigned long *) (& fields->f_maskl)); |
47b1a55a SC |
425 | break; |
426 | case IQ2000_OPERAND_MASKQ10 : | |
33b71eeb | 427 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKQ10, (unsigned long *) (& fields->f_maskq10)); |
47b1a55a SC |
428 | break; |
429 | case IQ2000_OPERAND_MASKR : | |
33b71eeb | 430 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKR, (unsigned long *) (& fields->f_rs)); |
47b1a55a SC |
431 | break; |
432 | case IQ2000_OPERAND_MLO16 : | |
33b71eeb | 433 | errmsg = parse_mlo16 (cd, strp, IQ2000_OPERAND_MLO16, (unsigned long *) (& fields->f_imm)); |
47b1a55a SC |
434 | break; |
435 | case IQ2000_OPERAND_OFFSET : | |
436 | { | |
437 | bfd_vma value; | |
438 | errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_OFFSET, 0, NULL, & value); | |
439 | fields->f_offset = value; | |
440 | } | |
441 | break; | |
442 | case IQ2000_OPERAND_RD : | |
443 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd); | |
444 | break; | |
445 | case IQ2000_OPERAND_RD_RS : | |
446 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd_rs); | |
447 | break; | |
448 | case IQ2000_OPERAND_RD_RT : | |
449 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd_rt); | |
450 | break; | |
451 | case IQ2000_OPERAND_RS : | |
452 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rs); | |
453 | break; | |
454 | case IQ2000_OPERAND_RT : | |
455 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rt); | |
456 | break; | |
457 | case IQ2000_OPERAND_RT_RS : | |
458 | errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rt_rs); | |
459 | break; | |
460 | case IQ2000_OPERAND_SHAMT : | |
33b71eeb | 461 | errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_SHAMT, (unsigned long *) (& fields->f_shamt)); |
47b1a55a SC |
462 | break; |
463 | ||
464 | default : | |
465 | /* xgettext:c-format */ | |
466 | fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); | |
467 | abort (); | |
468 | } | |
469 | ||
470 | return errmsg; | |
471 | } | |
472 | ||
473 | cgen_parse_fn * const iq2000_cgen_parse_handlers[] = | |
474 | { | |
475 | parse_insn_normal, | |
476 | }; | |
477 | ||
478 | void | |
479 | iq2000_cgen_init_asm (cd) | |
480 | CGEN_CPU_DESC cd; | |
481 | { | |
482 | iq2000_cgen_init_opcode_table (cd); | |
483 | iq2000_cgen_init_ibld_table (cd); | |
484 | cd->parse_handlers = & iq2000_cgen_parse_handlers[0]; | |
485 | cd->parse_operand = iq2000_cgen_parse_operand; | |
47b1a55a SC |
486 | } |
487 | ||
488 | \f | |
489 | ||
490 | /* Regex construction routine. | |
491 | ||
492 | This translates an opcode syntax string into a regex string, | |
493 | by replacing any non-character syntax element (such as an | |
494 | opcode) with the pattern '.*' | |
495 | ||
496 | It then compiles the regex and stores it in the opcode, for | |
497 | later use by iq2000_cgen_assemble_insn | |
498 | ||
499 | Returns NULL for success, an error message for failure. */ | |
500 | ||
501 | char * | |
ffead7ae | 502 | iq2000_cgen_build_insn_regex (CGEN_INSN *insn) |
47b1a55a SC |
503 | { |
504 | CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); | |
505 | const char *mnem = CGEN_INSN_MNEMONIC (insn); | |
506 | char rxbuf[CGEN_MAX_RX_ELEMENTS]; | |
507 | char *rx = rxbuf; | |
508 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
509 | int reg_err; | |
510 | ||
511 | syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); | |
512 | ||
513 | /* Mnemonics come first in the syntax string. */ | |
514 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
515 | return _("missing mnemonic in syntax string"); | |
516 | ++syn; | |
517 | ||
518 | /* Generate a case sensitive regular expression that emulates case | |
519 | insensitive matching in the "C" locale. We cannot generate a case | |
520 | insensitive regular expression because in Turkish locales, 'i' and 'I' | |
521 | are not equal modulo case conversion. */ | |
522 | ||
523 | /* Copy the literal mnemonic out of the insn. */ | |
524 | for (; *mnem; mnem++) | |
525 | { | |
526 | char c = *mnem; | |
527 | ||
528 | if (ISALPHA (c)) | |
529 | { | |
530 | *rx++ = '['; | |
531 | *rx++ = TOLOWER (c); | |
532 | *rx++ = TOUPPER (c); | |
533 | *rx++ = ']'; | |
534 | } | |
535 | else | |
536 | *rx++ = c; | |
537 | } | |
538 | ||
539 | /* Copy any remaining literals from the syntax string into the rx. */ | |
540 | for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) | |
541 | { | |
542 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
543 | { | |
544 | char c = CGEN_SYNTAX_CHAR (* syn); | |
545 | ||
546 | switch (c) | |
547 | { | |
548 | /* Escape any regex metacharacters in the syntax. */ | |
549 | case '.': case '[': case '\\': | |
550 | case '*': case '^': case '$': | |
551 | ||
552 | #ifdef CGEN_ESCAPE_EXTENDED_REGEX | |
553 | case '?': case '{': case '}': | |
554 | case '(': case ')': case '*': | |
555 | case '|': case '+': case ']': | |
556 | #endif | |
557 | *rx++ = '\\'; | |
558 | *rx++ = c; | |
559 | break; | |
560 | ||
561 | default: | |
562 | if (ISALPHA (c)) | |
563 | { | |
564 | *rx++ = '['; | |
565 | *rx++ = TOLOWER (c); | |
566 | *rx++ = TOUPPER (c); | |
567 | *rx++ = ']'; | |
568 | } | |
569 | else | |
570 | *rx++ = c; | |
571 | break; | |
572 | } | |
573 | } | |
574 | else | |
575 | { | |
576 | /* Replace non-syntax fields with globs. */ | |
577 | *rx++ = '.'; | |
578 | *rx++ = '*'; | |
579 | } | |
580 | } | |
581 | ||
582 | /* Trailing whitespace ok. */ | |
583 | * rx++ = '['; | |
584 | * rx++ = ' '; | |
585 | * rx++ = '\t'; | |
586 | * rx++ = ']'; | |
587 | * rx++ = '*'; | |
588 | ||
589 | /* But anchor it after that. */ | |
590 | * rx++ = '$'; | |
591 | * rx = '\0'; | |
592 | ||
593 | CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); | |
594 | reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); | |
595 | ||
596 | if (reg_err == 0) | |
597 | return NULL; | |
598 | else | |
599 | { | |
600 | static char msg[80]; | |
601 | ||
602 | regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); | |
603 | regfree ((regex_t *) CGEN_INSN_RX (insn)); | |
604 | free (CGEN_INSN_RX (insn)); | |
605 | (CGEN_INSN_RX (insn)) = NULL; | |
606 | return msg; | |
607 | } | |
608 | } | |
609 | ||
610 | \f | |
611 | /* Default insn parser. | |
612 | ||
613 | The syntax string is scanned and operands are parsed and stored in FIELDS. | |
614 | Relocs are queued as we go via other callbacks. | |
615 | ||
616 | ??? Note that this is currently an all-or-nothing parser. If we fail to | |
617 | parse the instruction, we return 0 and the caller will start over from | |
618 | the beginning. Backtracking will be necessary in parsing subexpressions, | |
619 | but that can be handled there. Not handling backtracking here may get | |
620 | expensive in the case of the m68k. Deal with later. | |
621 | ||
622 | Returns NULL for success, an error message for failure. */ | |
623 | ||
624 | static const char * | |
ffead7ae MM |
625 | parse_insn_normal (CGEN_CPU_DESC cd, |
626 | const CGEN_INSN *insn, | |
627 | const char **strp, | |
628 | CGEN_FIELDS *fields) | |
47b1a55a SC |
629 | { |
630 | /* ??? Runtime added insns not handled yet. */ | |
631 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
632 | const char *str = *strp; | |
633 | const char *errmsg; | |
634 | const char *p; | |
635 | const CGEN_SYNTAX_CHAR_TYPE * syn; | |
636 | #ifdef CGEN_MNEMONIC_OPERANDS | |
637 | /* FIXME: wip */ | |
638 | int past_opcode_p; | |
639 | #endif | |
640 | ||
641 | /* For now we assume the mnemonic is first (there are no leading operands). | |
642 | We can parse it without needing to set up operand parsing. | |
643 | GAS's input scrubber will ensure mnemonics are lowercase, but we may | |
644 | not be called from GAS. */ | |
645 | p = CGEN_INSN_MNEMONIC (insn); | |
646 | while (*p && TOLOWER (*p) == TOLOWER (*str)) | |
647 | ++p, ++str; | |
648 | ||
649 | if (* p) | |
650 | return _("unrecognized instruction"); | |
651 | ||
652 | #ifndef CGEN_MNEMONIC_OPERANDS | |
653 | if (* str && ! ISSPACE (* str)) | |
654 | return _("unrecognized instruction"); | |
655 | #endif | |
656 | ||
657 | CGEN_INIT_PARSE (cd); | |
658 | cgen_init_parse_operand (cd); | |
659 | #ifdef CGEN_MNEMONIC_OPERANDS | |
660 | past_opcode_p = 0; | |
661 | #endif | |
662 | ||
663 | /* We don't check for (*str != '\0') here because we want to parse | |
664 | any trailing fake arguments in the syntax string. */ | |
665 | syn = CGEN_SYNTAX_STRING (syntax); | |
666 | ||
667 | /* Mnemonics come first for now, ensure valid string. */ | |
668 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) | |
669 | abort (); | |
670 | ||
671 | ++syn; | |
672 | ||
673 | while (* syn != 0) | |
674 | { | |
675 | /* Non operand chars must match exactly. */ | |
676 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
677 | { | |
678 | /* FIXME: While we allow for non-GAS callers above, we assume the | |
679 | first char after the mnemonic part is a space. */ | |
680 | /* FIXME: We also take inappropriate advantage of the fact that | |
681 | GAS's input scrubber will remove extraneous blanks. */ | |
682 | if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) | |
683 | { | |
684 | #ifdef CGEN_MNEMONIC_OPERANDS | |
685 | if (CGEN_SYNTAX_CHAR(* syn) == ' ') | |
686 | past_opcode_p = 1; | |
687 | #endif | |
688 | ++ syn; | |
689 | ++ str; | |
690 | } | |
691 | else if (*str) | |
692 | { | |
693 | /* Syntax char didn't match. Can't be this insn. */ | |
694 | static char msg [80]; | |
695 | ||
696 | /* xgettext:c-format */ | |
697 | sprintf (msg, _("syntax error (expected char `%c', found `%c')"), | |
698 | CGEN_SYNTAX_CHAR(*syn), *str); | |
699 | return msg; | |
700 | } | |
701 | else | |
702 | { | |
703 | /* Ran out of input. */ | |
704 | static char msg [80]; | |
705 | ||
706 | /* xgettext:c-format */ | |
707 | sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), | |
708 | CGEN_SYNTAX_CHAR(*syn)); | |
709 | return msg; | |
710 | } | |
711 | continue; | |
712 | } | |
713 | ||
714 | /* We have an operand of some sort. */ | |
715 | errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), | |
716 | &str, fields); | |
717 | if (errmsg) | |
718 | return errmsg; | |
719 | ||
720 | /* Done with this operand, continue with next one. */ | |
721 | ++ syn; | |
722 | } | |
723 | ||
724 | /* If we're at the end of the syntax string, we're done. */ | |
725 | if (* syn == 0) | |
726 | { | |
727 | /* FIXME: For the moment we assume a valid `str' can only contain | |
728 | blanks now. IE: We needn't try again with a longer version of | |
729 | the insn and it is assumed that longer versions of insns appear | |
730 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
731 | while (ISSPACE (* str)) | |
732 | ++ str; | |
733 | ||
734 | if (* str != '\0') | |
735 | return _("junk at end of line"); /* FIXME: would like to include `str' */ | |
736 | ||
737 | return NULL; | |
738 | } | |
739 | ||
740 | /* We couldn't parse it. */ | |
741 | return _("unrecognized instruction"); | |
742 | } | |
743 | \f | |
744 | /* Main entry point. | |
745 | This routine is called for each instruction to be assembled. | |
746 | STR points to the insn to be assembled. | |
747 | We assume all necessary tables have been initialized. | |
748 | The assembled instruction, less any fixups, is stored in BUF. | |
749 | Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value | |
750 | still needs to be converted to target byte order, otherwise BUF is an array | |
751 | of bytes in target byte order. | |
752 | The result is a pointer to the insn's entry in the opcode table, | |
753 | or NULL if an error occured (an error message will have already been | |
754 | printed). | |
755 | ||
756 | Note that when processing (non-alias) macro-insns, | |
757 | this function recurses. | |
758 | ||
759 | ??? It's possible to make this cpu-independent. | |
760 | One would have to deal with a few minor things. | |
761 | At this point in time doing so would be more of a curiosity than useful | |
762 | [for example this file isn't _that_ big], but keeping the possibility in | |
763 | mind helps keep the design clean. */ | |
764 | ||
765 | const CGEN_INSN * | |
ffead7ae MM |
766 | iq2000_cgen_assemble_insn (CGEN_CPU_DESC cd, |
767 | const char *str, | |
768 | CGEN_FIELDS *fields, | |
769 | CGEN_INSN_BYTES_PTR buf, | |
770 | char **errmsg) | |
47b1a55a SC |
771 | { |
772 | const char *start; | |
773 | CGEN_INSN_LIST *ilist; | |
774 | const char *parse_errmsg = NULL; | |
775 | const char *insert_errmsg = NULL; | |
776 | int recognized_mnemonic = 0; | |
777 | ||
778 | /* Skip leading white space. */ | |
779 | while (ISSPACE (* str)) | |
780 | ++ str; | |
781 | ||
782 | /* The instructions are stored in hashed lists. | |
783 | Get the first in the list. */ | |
784 | ilist = CGEN_ASM_LOOKUP_INSN (cd, str); | |
785 | ||
786 | /* Keep looking until we find a match. */ | |
787 | start = str; | |
788 | for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) | |
789 | { | |
790 | const CGEN_INSN *insn = ilist->insn; | |
791 | recognized_mnemonic = 1; | |
792 | ||
793 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED | |
794 | /* Not usually needed as unsupported opcodes | |
795 | shouldn't be in the hash lists. */ | |
796 | /* Is this insn supported by the selected cpu? */ | |
797 | if (! iq2000_cgen_insn_supported (cd, insn)) | |
798 | continue; | |
799 | #endif | |
b11dcf4e | 800 | /* If the RELAXED attribute is set, this is an insn that shouldn't be |
47b1a55a SC |
801 | chosen immediately. Instead, it is used during assembler/linker |
802 | relaxation if possible. */ | |
b11dcf4e | 803 | if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) |
47b1a55a SC |
804 | continue; |
805 | ||
806 | str = start; | |
807 | ||
808 | /* Skip this insn if str doesn't look right lexically. */ | |
809 | if (CGEN_INSN_RX (insn) != NULL && | |
810 | regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) | |
811 | continue; | |
812 | ||
813 | /* Allow parse/insert handlers to obtain length of insn. */ | |
814 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
815 | ||
816 | parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); | |
817 | if (parse_errmsg != NULL) | |
818 | continue; | |
819 | ||
820 | /* ??? 0 is passed for `pc'. */ | |
821 | insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, | |
822 | (bfd_vma) 0); | |
823 | if (insert_errmsg != NULL) | |
824 | continue; | |
825 | ||
826 | /* It is up to the caller to actually output the insn and any | |
827 | queued relocs. */ | |
828 | return insn; | |
829 | } | |
830 | ||
831 | { | |
832 | static char errbuf[150]; | |
833 | #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS | |
834 | const char *tmp_errmsg; | |
835 | ||
836 | /* If requesting verbose error messages, use insert_errmsg. | |
837 | Failing that, use parse_errmsg. */ | |
838 | tmp_errmsg = (insert_errmsg ? insert_errmsg : | |
839 | parse_errmsg ? parse_errmsg : | |
840 | recognized_mnemonic ? | |
841 | _("unrecognized form of instruction") : | |
842 | _("unrecognized instruction")); | |
843 | ||
844 | if (strlen (start) > 50) | |
845 | /* xgettext:c-format */ | |
846 | sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); | |
847 | else | |
848 | /* xgettext:c-format */ | |
849 | sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); | |
850 | #else | |
851 | if (strlen (start) > 50) | |
852 | /* xgettext:c-format */ | |
853 | sprintf (errbuf, _("bad instruction `%.50s...'"), start); | |
854 | else | |
855 | /* xgettext:c-format */ | |
856 | sprintf (errbuf, _("bad instruction `%.50s'"), start); | |
857 | #endif | |
858 | ||
859 | *errmsg = errbuf; | |
860 | return NULL; | |
861 | } | |
862 | } | |
863 | \f | |
864 | #if 0 /* This calls back to GAS which we can't do without care. */ | |
865 | ||
866 | /* Record each member of OPVALS in the assembler's symbol table. | |
867 | This lets GAS parse registers for us. | |
868 | ??? Interesting idea but not currently used. */ | |
869 | ||
870 | /* Record each member of OPVALS in the assembler's symbol table. | |
871 | FIXME: Not currently used. */ | |
872 | ||
873 | void | |
ffead7ae | 874 | iq2000_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals) |
47b1a55a SC |
875 | { |
876 | CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL); | |
877 | const CGEN_KEYWORD_ENTRY * ke; | |
878 | ||
879 | while ((ke = cgen_keyword_search_next (& search)) != NULL) | |
880 | { | |
881 | #if 0 /* Unnecessary, should be done in the search routine. */ | |
882 | if (! iq2000_cgen_opval_supported (ke)) | |
883 | continue; | |
884 | #endif | |
885 | cgen_asm_record_register (cd, ke->name, ke->value); | |
886 | } | |
887 | } | |
888 | ||
889 | #endif /* 0 */ |