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b081650b DB |
1 | /* Morpho Technologies mRISC opcode support, for GNU Binutils. -*- C -*- |
2 | Copyright 2001 Free Software Foundation, Inc. | |
3 | ||
4 | Contributed by Red Hat Inc; developed under contract from | |
5 | Morpho Technologies. | |
6 | ||
7 | This file is part of the GNU Binutils. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. | |
22 | ||
23 | */ | |
24 | ||
25 | /* | |
26 | Each section is delimited with start and end markers. | |
27 | ||
28 | <arch>-opc.h additions use: "-- opc.h" | |
29 | <arch>-opc.c additions use: "-- opc.c" | |
30 | <arch>-asm.c additions use: "-- asm.c" | |
31 | <arch>-dis.c additions use: "-- dis.c" | |
32 | <arch>-ibd.h additions use: "-- ibd.h" | |
33 | */ | |
34 | \f | |
35 | /* -- opc.h */ | |
36 | ||
37 | /* Check applicability of instructions against machines. */ | |
38 | #define CGEN_VALIDATE_INSN_SUPPORTED | |
39 | ||
40 | /* Allows reason codes to be output when assembler errors occur. */ | |
41 | #define CGEN_VERBOSE_ASSEMBLER_ERRORS | |
42 | ||
43 | /* Override disassembly hashing - there are variable bits in the top | |
44 | byte of these instructions. */ | |
45 | #define CGEN_DIS_HASH_SIZE 8 | |
46 | #define CGEN_DIS_HASH(buf, value) (((* (unsigned char *) (buf)) >> 5) % CGEN_DIS_HASH_SIZE) | |
47 | ||
48 | #define CGEN_ASM_HASH_SIZE 127 | |
d031aafb | 49 | #define CGEN_ASM_HASH(insn) mt_asm_hash (insn) |
b081650b | 50 | |
d031aafb | 51 | extern unsigned int mt_asm_hash (const char *); |
b081650b | 52 | |
d031aafb | 53 | extern int mt_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *); |
b081650b DB |
54 | |
55 | \f | |
56 | /* -- opc.c */ | |
57 | #include "safe-ctype.h" | |
58 | ||
59 | /* Special check to ensure that instruction exists for given machine. */ | |
60 | ||
61 | int | |
d031aafb | 62 | mt_cgen_insn_supported (CGEN_CPU_DESC cd, const CGEN_INSN *insn) |
b081650b DB |
63 | { |
64 | int machs = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH); | |
65 | ||
66 | /* No mach attribute? Assume it's supported for all machs. */ | |
67 | if (machs == 0) | |
68 | return 1; | |
69 | ||
70 | return ((machs & cd->machs) != 0); | |
71 | } | |
72 | ||
73 | /* A better hash function for instruction mnemonics. */ | |
74 | ||
75 | unsigned int | |
d031aafb | 76 | mt_asm_hash (const char* insn) |
b081650b DB |
77 | { |
78 | unsigned int hash; | |
79 | const char* m = insn; | |
80 | ||
81 | for (hash = 0; *m && ! ISSPACE (*m); m++) | |
82 | hash = (hash * 23) ^ (0x1F & TOLOWER (*m)); | |
83 | ||
84 | /* printf ("%s %d\n", insn, (hash % CGEN_ASM_HASH_SIZE)); */ | |
85 | ||
86 | return hash % CGEN_ASM_HASH_SIZE; | |
87 | } | |
88 | ||
89 | \f | |
90 | /* -- asm.c */ | |
b081650b DB |
91 | /* Range checking for signed numbers. Returns 0 if acceptable |
92 | and 1 if the value is out of bounds for a signed quantity. */ | |
93 | ||
94 | static int | |
95 | signed_out_of_bounds (long val) | |
96 | { | |
97 | if ((val < -32768) || (val > 32767)) | |
98 | return 1; | |
99 | return 0; | |
100 | } | |
101 | ||
6f84a2a6 NS |
102 | static const char * |
103 | parse_loopsize (CGEN_CPU_DESC cd, | |
104 | const char **strp, | |
105 | int opindex, | |
106 | void *arg) | |
107 | { | |
108 | signed long * valuep = (signed long *) arg; | |
109 | const char *errmsg; | |
110 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; | |
111 | enum cgen_parse_operand_result result_type; | |
112 | bfd_vma value; | |
113 | ||
114 | /* Is it a control transfer instructions? */ | |
d031aafb | 115 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE) |
6f84a2a6 | 116 | { |
d031aafb | 117 | code = BFD_RELOC_MT_PCINSN8; |
6f84a2a6 NS |
118 | errmsg = cgen_parse_address (cd, strp, opindex, code, |
119 | & result_type, & value); | |
120 | *valuep = value; | |
121 | return errmsg; | |
122 | } | |
123 | ||
124 | abort (); | |
125 | } | |
126 | ||
b081650b DB |
127 | static const char * |
128 | parse_imm16 (CGEN_CPU_DESC cd, | |
129 | const char **strp, | |
130 | int opindex, | |
3ec2b351 | 131 | void *arg) |
b081650b | 132 | { |
3ec2b351 | 133 | signed long * valuep = (signed long *) arg; |
b081650b DB |
134 | const char *errmsg; |
135 | enum cgen_parse_operand_result result_type; | |
136 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; | |
137 | bfd_vma value; | |
138 | ||
139 | /* Is it a control transfer instructions? */ | |
d031aafb | 140 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O) |
b081650b DB |
141 | { |
142 | code = BFD_RELOC_16_PCREL; | |
143 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
144 | & result_type, & value); | |
145 | if (errmsg == NULL) | |
146 | { | |
147 | if (signed_out_of_bounds (value)) | |
148 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
149 | } | |
150 | *valuep = value; | |
151 | return errmsg; | |
152 | } | |
153 | ||
154 | /* If it's not a control transfer instruction, then | |
155 | we have to check for %OP relocating operators. */ | |
d031aafb | 156 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L) |
6f84a2a6 NS |
157 | ; |
158 | else if (strncmp (*strp, "%hi16", 5) == 0) | |
b081650b DB |
159 | { |
160 | *strp += 5; | |
161 | code = BFD_RELOC_HI16; | |
162 | } | |
163 | else if (strncmp (*strp, "%lo16", 5) == 0) | |
164 | { | |
165 | *strp += 5; | |
166 | code = BFD_RELOC_LO16; | |
167 | } | |
168 | ||
169 | /* If we found a %OP relocating operator, then parse it as an address. | |
170 | If not, we need to parse it as an integer, either signed or unsigned | |
171 | depending on which operand type we have. */ | |
172 | if (code != BFD_RELOC_NONE) | |
173 | { | |
174 | /* %OP relocating operator found. */ | |
175 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
176 | & result_type, & value); | |
177 | if (errmsg == NULL) | |
178 | { | |
179 | switch (result_type) | |
180 | { | |
181 | case (CGEN_PARSE_OPERAND_RESULT_NUMBER): | |
182 | if (code == BFD_RELOC_HI16) | |
183 | value = (value >> 16) & 0xFFFF; | |
184 | else if (code == BFD_RELOC_LO16) | |
185 | value = value & 0xFFFF; | |
186 | else | |
187 | errmsg = _("Biiiig Trouble in parse_imm16!"); | |
188 | break; | |
189 | ||
190 | case (CGEN_PARSE_OPERAND_RESULT_QUEUED): | |
191 | /* No special processing for this case. */ | |
192 | break; | |
193 | ||
194 | default: | |
195 | errmsg = _("%operator operand is not a symbol"); | |
196 | break; | |
197 | } | |
198 | } | |
199 | *valuep = value; | |
200 | } | |
201 | else | |
202 | { | |
203 | /* Parse hex values like 0xffff as unsigned, and sign extend | |
204 | them manually. */ | |
d031aafb | 205 | int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16); |
b081650b DB |
206 | |
207 | if ((*strp)[0] == '0' | |
208 | && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) | |
209 | parse_signed = 0; | |
210 | ||
211 | /* No relocating operator. Parse as an number. */ | |
212 | if (parse_signed) | |
213 | { | |
214 | /* Parse as as signed integer. */ | |
215 | ||
216 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); | |
217 | ||
218 | if (errmsg == NULL) | |
219 | { | |
220 | #if 0 | |
221 | /* Manual range checking is needed for the signed case. */ | |
222 | if (*valuep & 0x8000) | |
223 | value = 0xffff0000 | *valuep; | |
224 | else | |
225 | value = *valuep; | |
226 | ||
227 | if (signed_out_of_bounds (value)) | |
228 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
229 | /* Truncate to 16 bits. This is necessary | |
230 | because cgen will have sign extended *valuep. */ | |
231 | *valuep &= 0xFFFF; | |
232 | #endif | |
233 | } | |
234 | } | |
235 | else | |
236 | { | |
d031aafb | 237 | /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */ |
3ec2b351 | 238 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep); |
b081650b | 239 | |
d031aafb | 240 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16 |
b081650b DB |
241 | && *valuep >= 0x8000 |
242 | && *valuep <= 0xffff) | |
243 | *valuep -= 0x10000; | |
244 | } | |
245 | } | |
246 | ||
247 | return errmsg; | |
248 | } | |
249 | ||
250 | ||
251 | static const char * | |
252 | parse_dup (CGEN_CPU_DESC cd, | |
253 | const char **strp, | |
254 | int opindex, | |
3ec2b351 | 255 | unsigned long *valuep) |
b081650b DB |
256 | { |
257 | const char *errmsg = NULL; | |
258 | ||
259 | if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) | |
260 | { | |
261 | *strp += 3; | |
262 | *valuep = 1; | |
263 | } | |
264 | else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) | |
265 | { | |
266 | *strp += 2; | |
267 | *valuep = 0; | |
268 | } | |
269 | else | |
270 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
271 | ||
272 | return errmsg; | |
273 | } | |
274 | ||
275 | ||
276 | static const char * | |
277 | parse_ball (CGEN_CPU_DESC cd, | |
278 | const char **strp, | |
279 | int opindex, | |
3ec2b351 | 280 | unsigned long *valuep) |
b081650b DB |
281 | { |
282 | const char *errmsg = NULL; | |
283 | ||
284 | if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) | |
285 | { | |
286 | *strp += 3; | |
287 | *valuep = 1; | |
288 | } | |
289 | else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) | |
290 | { | |
291 | *strp += 3; | |
292 | *valuep = 0; | |
293 | } | |
294 | else | |
295 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
296 | ||
297 | return errmsg; | |
298 | } | |
299 | ||
300 | static const char * | |
301 | parse_xmode (CGEN_CPU_DESC cd, | |
302 | const char **strp, | |
303 | int opindex, | |
3ec2b351 | 304 | unsigned long *valuep) |
b081650b DB |
305 | { |
306 | const char *errmsg = NULL; | |
307 | ||
308 | if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) | |
309 | { | |
310 | *strp += 2; | |
311 | *valuep = 1; | |
312 | } | |
313 | else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) | |
314 | { | |
315 | *strp += 2; | |
316 | *valuep = 0; | |
317 | } | |
318 | else | |
319 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
320 | ||
321 | return errmsg; | |
322 | } | |
323 | ||
324 | static const char * | |
325 | parse_rc (CGEN_CPU_DESC cd, | |
326 | const char **strp, | |
327 | int opindex, | |
3ec2b351 | 328 | unsigned long *valuep) |
b081650b DB |
329 | { |
330 | const char *errmsg = NULL; | |
331 | ||
332 | if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) | |
333 | { | |
334 | *strp += 1; | |
335 | *valuep = 1; | |
336 | } | |
337 | else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) | |
338 | { | |
339 | *strp += 1; | |
340 | *valuep = 0; | |
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_cbrb (CGEN_CPU_DESC cd, | |
350 | const char **strp, | |
351 | int opindex, | |
3ec2b351 | 352 | unsigned long *valuep) |
b081650b DB |
353 | { |
354 | const char *errmsg = NULL; | |
355 | ||
356 | if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) | |
357 | { | |
358 | *strp += 2; | |
359 | *valuep = 1; | |
360 | } | |
361 | else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) | |
362 | { | |
363 | *strp += 2; | |
364 | *valuep = 0; | |
365 | } | |
366 | else | |
367 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
368 | ||
369 | return errmsg; | |
370 | } | |
371 | ||
372 | static const char * | |
373 | parse_rbbc (CGEN_CPU_DESC cd, | |
374 | const char **strp, | |
375 | int opindex, | |
3ec2b351 | 376 | unsigned long *valuep) |
b081650b DB |
377 | { |
378 | const char *errmsg = NULL; | |
379 | ||
380 | if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) | |
381 | { | |
382 | *strp += 2; | |
383 | *valuep = 0; | |
384 | } | |
385 | else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) | |
386 | { | |
387 | *strp += 3; | |
388 | *valuep = 1; | |
389 | } | |
390 | else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) | |
391 | { | |
392 | *strp += 3; | |
393 | *valuep = 2; | |
394 | } | |
395 | else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) | |
396 | { | |
397 | *strp += 2; | |
398 | *valuep = 3; | |
399 | } | |
400 | else | |
401 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
402 | ||
403 | return errmsg; | |
404 | } | |
405 | ||
406 | static const char * | |
407 | parse_type (CGEN_CPU_DESC cd, | |
408 | const char **strp, | |
409 | int opindex, | |
3ec2b351 | 410 | unsigned long *valuep) |
b081650b DB |
411 | { |
412 | const char *errmsg = NULL; | |
413 | ||
414 | if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) | |
415 | { | |
416 | *strp += 3; | |
417 | *valuep = 0; | |
418 | } | |
419 | else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) | |
420 | { | |
421 | *strp += 4; | |
422 | *valuep = 1; | |
423 | } | |
424 | else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) | |
425 | { | |
426 | *strp += 2; | |
427 | *valuep = 2; | |
428 | } | |
429 | else | |
430 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
431 | ||
432 | if ((errmsg == NULL) && (*valuep == 3)) | |
433 | errmsg = _("invalid operand. type may have values 0,1,2 only."); | |
434 | ||
435 | return errmsg; | |
436 | } | |
437 | ||
438 | /* -- dis.c */ | |
439 | static void print_dollarhex (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); | |
6f84a2a6 | 440 | static void print_pcrel (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); |
b081650b DB |
441 | |
442 | static void | |
443 | print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, | |
444 | void * dis_info, | |
445 | long value, | |
446 | unsigned int attrs ATTRIBUTE_UNUSED, | |
447 | bfd_vma pc ATTRIBUTE_UNUSED, | |
448 | int length ATTRIBUTE_UNUSED) | |
449 | { | |
450 | disassemble_info *info = (disassemble_info *) dis_info; | |
451 | ||
0e6b69be | 452 | info->fprintf_func (info->stream, "$%lx", value); |
b081650b DB |
453 | |
454 | if (0) | |
455 | print_normal (cd, dis_info, value, attrs, pc, length); | |
456 | } | |
457 | ||
6f84a2a6 NS |
458 | static void |
459 | print_pcrel (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, | |
460 | void * dis_info, | |
461 | long value, | |
462 | unsigned int attrs ATTRIBUTE_UNUSED, | |
463 | bfd_vma pc ATTRIBUTE_UNUSED, | |
464 | int length ATTRIBUTE_UNUSED) | |
465 | { | |
466 | print_address (cd, dis_info, value + pc, attrs, pc, length); | |
467 | } | |
b081650b DB |
468 | |
469 | /* -- */ | |
470 | ||
471 | ||
472 | ||
473 | ||
474 |