Commit | Line | Data |
---|---|---|
a40cbfa3 NC |
1 | /* Disassembler 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-dis.in isn't | |
6 | ||
98f70fc4 AM |
7 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
8 | Free Software Foundation, Inc. | |
a40cbfa3 NC |
9 | |
10 | This file is part of the GNU Binutils and GDB, the GNU debugger. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2, or (at your option) | |
15 | any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software Foundation, Inc., | |
24 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
25 | ||
26 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. | |
27 | Keep that in mind. */ | |
28 | ||
29 | #include "sysdep.h" | |
30 | #include <stdio.h> | |
31 | #include "ansidecl.h" | |
32 | #include "dis-asm.h" | |
33 | #include "bfd.h" | |
34 | #include "symcat.h" | |
98f70fc4 | 35 | #include "libiberty.h" |
a40cbfa3 NC |
36 | #include "ip2k-desc.h" |
37 | #include "ip2k-opc.h" | |
38 | #include "opintl.h" | |
39 | ||
40 | /* Default text to print if an instruction isn't recognized. */ | |
41 | #define UNKNOWN_INSN_MSG _("*unknown*") | |
42 | ||
43 | static void print_normal | |
ffead7ae | 44 | (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); |
a40cbfa3 | 45 | static void print_address |
ffead7ae | 46 | (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int); |
a40cbfa3 | 47 | static void print_keyword |
ffead7ae | 48 | (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int); |
a40cbfa3 | 49 | static void print_insn_normal |
ffead7ae | 50 | (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); |
a40cbfa3 | 51 | static int print_insn |
ffead7ae | 52 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned); |
a40cbfa3 | 53 | static int default_print_insn |
ffead7ae | 54 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *); |
a40cbfa3 | 55 | static int read_insn |
ffead7ae MM |
56 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int, CGEN_EXTRACT_INFO *, |
57 | unsigned long *); | |
a40cbfa3 NC |
58 | \f |
59 | /* -- disassembler routines inserted here */ | |
60 | ||
61 | /* -- dis.c */ | |
62 | ||
98f70fc4 AM |
63 | #define PRINT_FUNC_DECL(name) \ |
64 | static void name PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int)) | |
65 | ||
66 | PRINT_FUNC_DECL (print_fr); | |
67 | PRINT_FUNC_DECL (print_dollarhex); | |
68 | PRINT_FUNC_DECL (print_dollarhex8); | |
69 | PRINT_FUNC_DECL (print_dollarhex16); | |
70 | PRINT_FUNC_DECL (print_dollarhex_addr16h); | |
71 | PRINT_FUNC_DECL (print_dollarhex_addr16l); | |
72 | PRINT_FUNC_DECL (print_dollarhex_p); | |
73 | PRINT_FUNC_DECL (print_dollarhex_cj); | |
74 | PRINT_FUNC_DECL (print_decimal); | |
75 | ||
a40cbfa3 NC |
76 | static void |
77 | print_fr (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 78 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
79 | PTR dis_info; |
80 | long value; | |
98f70fc4 AM |
81 | unsigned int attrs ATTRIBUTE_UNUSED; |
82 | bfd_vma pc ATTRIBUTE_UNUSED; | |
83 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
84 | { |
85 | disassemble_info *info = (disassemble_info *) dis_info; | |
86 | const CGEN_KEYWORD_ENTRY *ke; | |
87 | extern CGEN_KEYWORD ip2k_cgen_opval_register_names; | |
88 | long offsettest; | |
89 | long offsetvalue; | |
90 | ||
91 | if ( value == 0 ) /* This is (IP) */ | |
98f70fc4 | 92 | { |
a40cbfa3 NC |
93 | (*info->fprintf_func) (info->stream, "%s", "(IP)"); |
94 | return; | |
98f70fc4 | 95 | } |
a40cbfa3 NC |
96 | |
97 | offsettest = value >> 7; | |
98 | offsetvalue = value & 0x7F; | |
99 | ||
100 | /* Check to see if first two bits are 10 -> (DP) */ | |
101 | if ( offsettest == 2 ) | |
98f70fc4 | 102 | { |
a40cbfa3 | 103 | if ( offsetvalue == 0 ) |
98f70fc4 | 104 | (*info->fprintf_func) (info->stream, "%s","(DP)"); |
a40cbfa3 | 105 | else |
98f70fc4 | 106 | (*info->fprintf_func) (info->stream, "$%x%s",offsetvalue, "(DP)"); |
a40cbfa3 | 107 | return; |
98f70fc4 | 108 | } |
a40cbfa3 NC |
109 | |
110 | /* Check to see if first two bits are 11 -> (SP) */ | |
111 | if ( offsettest == 3 ) | |
98f70fc4 | 112 | { |
a40cbfa3 | 113 | if ( offsetvalue == 0 ) |
98f70fc4 | 114 | (*info->fprintf_func) (info->stream, "%s", "(SP)"); |
a40cbfa3 | 115 | else |
98f70fc4 | 116 | (*info->fprintf_func) (info->stream, "$%x%s", offsetvalue,"(SP)"); |
a40cbfa3 | 117 | return; |
98f70fc4 | 118 | } |
a40cbfa3 NC |
119 | |
120 | /* Attempt to print as a register keyword. */ | |
121 | ke = cgen_keyword_lookup_value (& ip2k_cgen_opval_register_names, value); | |
122 | if (ke != NULL) | |
123 | { | |
124 | (*info->fprintf_func) (info->stream, "%s", ke->name); | |
125 | return; | |
126 | } | |
127 | ||
128 | /* Print as an address literal. */ | |
129 | (*info->fprintf_func) (info->stream, "$%02x", value); | |
130 | } | |
131 | ||
132 | static void | |
133 | print_dollarhex (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 134 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
135 | PTR dis_info; |
136 | long value; | |
98f70fc4 AM |
137 | unsigned int attrs ATTRIBUTE_UNUSED; |
138 | bfd_vma pc ATTRIBUTE_UNUSED; | |
139 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
140 | { |
141 | disassemble_info *info = (disassemble_info *) dis_info; | |
142 | ||
143 | (*info->fprintf_func) (info->stream, "$%x", value); | |
144 | } | |
145 | ||
146 | static void | |
147 | print_dollarhex8 (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 148 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
149 | PTR dis_info; |
150 | long value; | |
98f70fc4 AM |
151 | unsigned int attrs ATTRIBUTE_UNUSED; |
152 | bfd_vma pc ATTRIBUTE_UNUSED; | |
153 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
154 | { |
155 | disassemble_info *info = (disassemble_info *) dis_info; | |
156 | ||
157 | (*info->fprintf_func) (info->stream, "$%02x", value); | |
158 | } | |
159 | ||
160 | static void | |
161 | print_dollarhex16 (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 162 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
163 | PTR dis_info; |
164 | long value; | |
98f70fc4 AM |
165 | unsigned int attrs ATTRIBUTE_UNUSED; |
166 | bfd_vma pc ATTRIBUTE_UNUSED; | |
167 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
168 | { |
169 | disassemble_info *info = (disassemble_info *) dis_info; | |
170 | ||
171 | (*info->fprintf_func) (info->stream, "$%04x", value); | |
172 | } | |
173 | ||
174 | static void | |
175 | print_dollarhex_addr16h (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 176 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
177 | PTR dis_info; |
178 | long value; | |
98f70fc4 AM |
179 | unsigned int attrs ATTRIBUTE_UNUSED; |
180 | bfd_vma pc ATTRIBUTE_UNUSED; | |
181 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
182 | { |
183 | disassemble_info *info = (disassemble_info *) dis_info; | |
184 | ||
185 | /* This is a loadh instruction. Shift the value to the left */ | |
186 | /* by 8 bits so that disassembled code will reassemble properly. */ | |
187 | value = ((value << 8) & 0xFF00); | |
188 | ||
189 | (*info->fprintf_func) (info->stream, "$%04x", value); | |
190 | } | |
191 | ||
192 | static void | |
193 | print_dollarhex_addr16l (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 194 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
195 | PTR dis_info; |
196 | long value; | |
98f70fc4 AM |
197 | unsigned int attrs ATTRIBUTE_UNUSED; |
198 | bfd_vma pc ATTRIBUTE_UNUSED; | |
199 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
200 | { |
201 | disassemble_info *info = (disassemble_info *) dis_info; | |
202 | ||
203 | (*info->fprintf_func) (info->stream, "$%04x", value); | |
204 | } | |
205 | ||
206 | static void | |
207 | print_dollarhex_p (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 208 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
209 | PTR dis_info; |
210 | long value; | |
98f70fc4 AM |
211 | unsigned int attrs ATTRIBUTE_UNUSED; |
212 | bfd_vma pc ATTRIBUTE_UNUSED; | |
213 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
214 | { |
215 | disassemble_info *info = (disassemble_info *) dis_info; | |
216 | ||
217 | value = ((value << 14) & 0x1C000); | |
218 | ;value = (value & 0x1FFFF); | |
219 | (*info->fprintf_func) (info->stream, "$%05x", value); | |
220 | } | |
221 | ||
222 | static void | |
223 | print_dollarhex_cj (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 224 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
225 | PTR dis_info; |
226 | long value; | |
98f70fc4 AM |
227 | unsigned int attrs ATTRIBUTE_UNUSED; |
228 | bfd_vma pc ATTRIBUTE_UNUSED; | |
229 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
230 | { |
231 | disassemble_info *info = (disassemble_info *) dis_info; | |
232 | ||
233 | value = ((value << 1) & 0x1FFFF); | |
234 | (*info->fprintf_func) (info->stream, "$%05x", value); | |
235 | } | |
236 | ||
237 | ||
238 | static void | |
239 | print_decimal (cd, dis_info, value, attrs, pc, length) | |
98f70fc4 | 240 | CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; |
a40cbfa3 NC |
241 | PTR dis_info; |
242 | long value; | |
98f70fc4 AM |
243 | unsigned int attrs ATTRIBUTE_UNUSED; |
244 | bfd_vma pc ATTRIBUTE_UNUSED; | |
245 | int length ATTRIBUTE_UNUSED; | |
a40cbfa3 NC |
246 | { |
247 | disassemble_info *info = (disassemble_info *) dis_info; | |
248 | ||
249 | (*info->fprintf_func) (info->stream, "%d", value); | |
250 | } | |
251 | ||
252 | ||
253 | ||
254 | /* -- */ | |
255 | ||
256 | void ip2k_cgen_print_operand | |
257 | PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, | |
258 | void const *, bfd_vma, int)); | |
259 | ||
260 | /* Main entry point for printing operands. | |
261 | XINFO is a `void *' and not a `disassemble_info *' to not put a requirement | |
262 | of dis-asm.h on cgen.h. | |
263 | ||
264 | This function is basically just a big switch statement. Earlier versions | |
265 | used tables to look up the function to use, but | |
266 | - if the table contains both assembler and disassembler functions then | |
267 | the disassembler contains much of the assembler and vice-versa, | |
268 | - there's a lot of inlining possibilities as things grow, | |
269 | - using a switch statement avoids the function call overhead. | |
270 | ||
271 | This function could be moved into `print_insn_normal', but keeping it | |
272 | separate makes clear the interface between `print_insn_normal' and each of | |
273 | the handlers. */ | |
274 | ||
275 | void | |
276 | ip2k_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length) | |
277 | CGEN_CPU_DESC cd; | |
278 | int opindex; | |
279 | PTR xinfo; | |
280 | CGEN_FIELDS *fields; | |
281 | void const *attrs ATTRIBUTE_UNUSED; | |
282 | bfd_vma pc; | |
283 | int length; | |
284 | { | |
285 | disassemble_info *info = (disassemble_info *) xinfo; | |
286 | ||
287 | switch (opindex) | |
288 | { | |
289 | case IP2K_OPERAND_ADDR16CJP : | |
290 | print_dollarhex_cj (cd, info, fields->f_addr16cjp, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length); | |
291 | break; | |
292 | case IP2K_OPERAND_ADDR16H : | |
293 | print_dollarhex_addr16h (cd, info, fields->f_imm8, 0, pc, length); | |
294 | break; | |
295 | case IP2K_OPERAND_ADDR16L : | |
296 | print_dollarhex_addr16l (cd, info, fields->f_imm8, 0, pc, length); | |
297 | break; | |
298 | case IP2K_OPERAND_ADDR16P : | |
299 | print_dollarhex_p (cd, info, fields->f_page3, 0, pc, length); | |
300 | break; | |
301 | case IP2K_OPERAND_BITNO : | |
302 | print_decimal (cd, info, fields->f_bitno, 0, pc, length); | |
303 | break; | |
304 | case IP2K_OPERAND_CBIT : | |
305 | print_normal (cd, info, 0, 0, pc, length); | |
306 | break; | |
307 | case IP2K_OPERAND_DCBIT : | |
308 | print_normal (cd, info, 0, 0, pc, length); | |
309 | break; | |
310 | case IP2K_OPERAND_FR : | |
311 | print_fr (cd, info, fields->f_reg, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length); | |
312 | break; | |
313 | case IP2K_OPERAND_LIT8 : | |
314 | print_dollarhex8 (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); | |
315 | break; | |
316 | case IP2K_OPERAND_PABITS : | |
317 | print_normal (cd, info, 0, 0, pc, length); | |
318 | break; | |
319 | case IP2K_OPERAND_RETI3 : | |
320 | print_dollarhex (cd, info, fields->f_reti3, 0, pc, length); | |
321 | break; | |
322 | case IP2K_OPERAND_ZBIT : | |
323 | print_normal (cd, info, 0, 0, pc, length); | |
324 | break; | |
325 | ||
326 | default : | |
327 | /* xgettext:c-format */ | |
328 | fprintf (stderr, _("Unrecognized field %d while printing insn.\n"), | |
329 | opindex); | |
330 | abort (); | |
331 | } | |
332 | } | |
333 | ||
334 | cgen_print_fn * const ip2k_cgen_print_handlers[] = | |
335 | { | |
336 | print_insn_normal, | |
337 | }; | |
338 | ||
339 | ||
340 | void | |
341 | ip2k_cgen_init_dis (cd) | |
342 | CGEN_CPU_DESC cd; | |
343 | { | |
344 | ip2k_cgen_init_opcode_table (cd); | |
345 | ip2k_cgen_init_ibld_table (cd); | |
346 | cd->print_handlers = & ip2k_cgen_print_handlers[0]; | |
347 | cd->print_operand = ip2k_cgen_print_operand; | |
348 | } | |
349 | ||
350 | \f | |
351 | /* Default print handler. */ | |
352 | ||
353 | static void | |
ffead7ae MM |
354 | print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
355 | void *dis_info, | |
356 | long value, | |
357 | unsigned int attrs, | |
358 | bfd_vma pc ATTRIBUTE_UNUSED, | |
359 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
360 | { |
361 | disassemble_info *info = (disassemble_info *) dis_info; | |
362 | ||
363 | #ifdef CGEN_PRINT_NORMAL | |
364 | CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length); | |
365 | #endif | |
366 | ||
367 | /* Print the operand as directed by the attributes. */ | |
368 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) | |
369 | ; /* nothing to do */ | |
370 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) | |
371 | (*info->fprintf_func) (info->stream, "%ld", value); | |
372 | else | |
373 | (*info->fprintf_func) (info->stream, "0x%lx", value); | |
374 | } | |
375 | ||
376 | /* Default address handler. */ | |
377 | ||
378 | static void | |
ffead7ae MM |
379 | print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
380 | void *dis_info, | |
381 | bfd_vma value, | |
382 | unsigned int attrs, | |
383 | bfd_vma pc ATTRIBUTE_UNUSED, | |
384 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
385 | { |
386 | disassemble_info *info = (disassemble_info *) dis_info; | |
387 | ||
388 | #ifdef CGEN_PRINT_ADDRESS | |
389 | CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length); | |
390 | #endif | |
391 | ||
392 | /* Print the operand as directed by the attributes. */ | |
393 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) | |
394 | ; /* nothing to do */ | |
395 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) | |
396 | (*info->print_address_func) (value, info); | |
397 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) | |
398 | (*info->print_address_func) (value, info); | |
399 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) | |
400 | (*info->fprintf_func) (info->stream, "%ld", (long) value); | |
401 | else | |
402 | (*info->fprintf_func) (info->stream, "0x%lx", (long) value); | |
403 | } | |
404 | ||
405 | /* Keyword print handler. */ | |
406 | ||
407 | static void | |
ffead7ae MM |
408 | print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
409 | void *dis_info, | |
410 | CGEN_KEYWORD *keyword_table, | |
411 | long value, | |
412 | unsigned int attrs ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
413 | { |
414 | disassemble_info *info = (disassemble_info *) dis_info; | |
415 | const CGEN_KEYWORD_ENTRY *ke; | |
416 | ||
417 | ke = cgen_keyword_lookup_value (keyword_table, value); | |
418 | if (ke != NULL) | |
419 | (*info->fprintf_func) (info->stream, "%s", ke->name); | |
420 | else | |
421 | (*info->fprintf_func) (info->stream, "???"); | |
422 | } | |
423 | \f | |
424 | /* Default insn printer. | |
425 | ||
ffead7ae | 426 | DIS_INFO is defined as `void *' so the disassembler needn't know anything |
a40cbfa3 NC |
427 | about disassemble_info. */ |
428 | ||
429 | static void | |
ffead7ae MM |
430 | print_insn_normal (CGEN_CPU_DESC cd, |
431 | void *dis_info, | |
432 | const CGEN_INSN *insn, | |
433 | CGEN_FIELDS *fields, | |
434 | bfd_vma pc, | |
435 | int length) | |
a40cbfa3 NC |
436 | { |
437 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
438 | disassemble_info *info = (disassemble_info *) dis_info; | |
439 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
440 | ||
441 | CGEN_INIT_PRINT (cd); | |
442 | ||
443 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
444 | { | |
445 | if (CGEN_SYNTAX_MNEMONIC_P (*syn)) | |
446 | { | |
447 | (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); | |
448 | continue; | |
449 | } | |
450 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
451 | { | |
452 | (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); | |
453 | continue; | |
454 | } | |
455 | ||
456 | /* We have an operand. */ | |
457 | ip2k_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, | |
458 | fields, CGEN_INSN_ATTRS (insn), pc, length); | |
459 | } | |
460 | } | |
461 | \f | |
462 | /* Subroutine of print_insn. Reads an insn into the given buffers and updates | |
463 | the extract info. | |
464 | Returns 0 if all is well, non-zero otherwise. */ | |
465 | ||
466 | static int | |
ffead7ae MM |
467 | read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
468 | bfd_vma pc, | |
469 | disassemble_info *info, | |
470 | char *buf, | |
471 | int buflen, | |
472 | CGEN_EXTRACT_INFO *ex_info, | |
473 | unsigned long *insn_value) | |
a40cbfa3 NC |
474 | { |
475 | int status = (*info->read_memory_func) (pc, buf, buflen, info); | |
476 | if (status != 0) | |
477 | { | |
478 | (*info->memory_error_func) (status, pc, info); | |
479 | return -1; | |
480 | } | |
481 | ||
482 | ex_info->dis_info = info; | |
483 | ex_info->valid = (1 << buflen) - 1; | |
484 | ex_info->insn_bytes = buf; | |
485 | ||
486 | *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | /* Utility to print an insn. | |
491 | BUF is the base part of the insn, target byte order, BUFLEN bytes long. | |
492 | The result is the size of the insn in bytes or zero for an unknown insn | |
493 | or -1 if an error occurs fetching data (memory_error_func will have | |
494 | been called). */ | |
495 | ||
496 | static int | |
ffead7ae MM |
497 | print_insn (CGEN_CPU_DESC cd, |
498 | bfd_vma pc, | |
499 | disassemble_info *info, | |
500 | char *buf, | |
501 | unsigned int buflen) | |
a40cbfa3 NC |
502 | { |
503 | CGEN_INSN_INT insn_value; | |
504 | const CGEN_INSN_LIST *insn_list; | |
505 | CGEN_EXTRACT_INFO ex_info; | |
506 | int basesize; | |
507 | ||
508 | /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ | |
509 | basesize = cd->base_insn_bitsize < buflen * 8 ? | |
510 | cd->base_insn_bitsize : buflen * 8; | |
511 | insn_value = cgen_get_insn_value (cd, buf, basesize); | |
512 | ||
513 | ||
514 | /* Fill in ex_info fields like read_insn would. Don't actually call | |
515 | read_insn, since the incoming buffer is already read (and possibly | |
516 | modified a la m32r). */ | |
517 | ex_info.valid = (1 << buflen) - 1; | |
518 | ex_info.dis_info = info; | |
519 | ex_info.insn_bytes = buf; | |
520 | ||
521 | /* The instructions are stored in hash lists. | |
522 | Pick the first one and keep trying until we find the right one. */ | |
523 | ||
524 | insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value); | |
525 | while (insn_list != NULL) | |
526 | { | |
527 | const CGEN_INSN *insn = insn_list->insn; | |
528 | CGEN_FIELDS fields; | |
529 | int length; | |
530 | unsigned long insn_value_cropped; | |
531 | ||
532 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED | |
533 | /* Not needed as insn shouldn't be in hash lists if not supported. */ | |
534 | /* Supported by this cpu? */ | |
535 | if (! ip2k_cgen_insn_supported (cd, insn)) | |
536 | { | |
537 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); | |
538 | continue; | |
539 | } | |
540 | #endif | |
541 | ||
542 | /* Basic bit mask must be correct. */ | |
543 | /* ??? May wish to allow target to defer this check until the extract | |
544 | handler. */ | |
545 | ||
546 | /* Base size may exceed this instruction's size. Extract the | |
547 | relevant part from the buffer. */ | |
548 | if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && | |
549 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) | |
550 | insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), | |
551 | info->endian == BFD_ENDIAN_BIG); | |
552 | else | |
553 | insn_value_cropped = insn_value; | |
554 | ||
555 | if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) | |
556 | == CGEN_INSN_BASE_VALUE (insn)) | |
557 | { | |
558 | /* Printing is handled in two passes. The first pass parses the | |
559 | machine insn and extracts the fields. The second pass prints | |
560 | them. */ | |
561 | ||
562 | /* Make sure the entire insn is loaded into insn_value, if it | |
563 | can fit. */ | |
564 | if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && | |
565 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) | |
566 | { | |
567 | unsigned long full_insn_value; | |
568 | int rc = read_insn (cd, pc, info, buf, | |
569 | CGEN_INSN_BITSIZE (insn) / 8, | |
570 | & ex_info, & full_insn_value); | |
571 | if (rc != 0) | |
572 | return rc; | |
573 | length = CGEN_EXTRACT_FN (cd, insn) | |
574 | (cd, insn, &ex_info, full_insn_value, &fields, pc); | |
575 | } | |
576 | else | |
577 | length = CGEN_EXTRACT_FN (cd, insn) | |
578 | (cd, insn, &ex_info, insn_value_cropped, &fields, pc); | |
579 | ||
580 | /* length < 0 -> error */ | |
581 | if (length < 0) | |
582 | return length; | |
583 | if (length > 0) | |
584 | { | |
585 | CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); | |
586 | /* length is in bits, result is in bytes */ | |
587 | return length / 8; | |
588 | } | |
589 | } | |
590 | ||
591 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); | |
592 | } | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | /* Default value for CGEN_PRINT_INSN. | |
598 | The result is the size of the insn in bytes or zero for an unknown insn | |
599 | or -1 if an error occured fetching bytes. */ | |
600 | ||
601 | #ifndef CGEN_PRINT_INSN | |
602 | #define CGEN_PRINT_INSN default_print_insn | |
603 | #endif | |
604 | ||
605 | static int | |
ffead7ae | 606 | default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) |
a40cbfa3 NC |
607 | { |
608 | char buf[CGEN_MAX_INSN_SIZE]; | |
609 | int buflen; | |
610 | int status; | |
611 | ||
612 | /* Attempt to read the base part of the insn. */ | |
613 | buflen = cd->base_insn_bitsize / 8; | |
614 | status = (*info->read_memory_func) (pc, buf, buflen, info); | |
615 | ||
616 | /* Try again with the minimum part, if min < base. */ | |
617 | if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) | |
618 | { | |
619 | buflen = cd->min_insn_bitsize / 8; | |
620 | status = (*info->read_memory_func) (pc, buf, buflen, info); | |
621 | } | |
622 | ||
623 | if (status != 0) | |
624 | { | |
625 | (*info->memory_error_func) (status, pc, info); | |
626 | return -1; | |
627 | } | |
628 | ||
629 | return print_insn (cd, pc, info, buf, buflen); | |
630 | } | |
631 | ||
632 | /* Main entry point. | |
633 | Print one instruction from PC on INFO->STREAM. | |
634 | Return the size of the instruction (in bytes). */ | |
635 | ||
636 | typedef struct cpu_desc_list { | |
637 | struct cpu_desc_list *next; | |
638 | int isa; | |
639 | int mach; | |
640 | int endian; | |
641 | CGEN_CPU_DESC cd; | |
642 | } cpu_desc_list; | |
643 | ||
644 | int | |
ffead7ae | 645 | print_insn_ip2k (bfd_vma pc, disassemble_info *info) |
a40cbfa3 NC |
646 | { |
647 | static cpu_desc_list *cd_list = 0; | |
648 | cpu_desc_list *cl = 0; | |
649 | static CGEN_CPU_DESC cd = 0; | |
650 | static int prev_isa; | |
651 | static int prev_mach; | |
652 | static int prev_endian; | |
653 | int length; | |
654 | int isa,mach; | |
655 | int endian = (info->endian == BFD_ENDIAN_BIG | |
656 | ? CGEN_ENDIAN_BIG | |
657 | : CGEN_ENDIAN_LITTLE); | |
658 | enum bfd_architecture arch; | |
659 | ||
660 | /* ??? gdb will set mach but leave the architecture as "unknown" */ | |
661 | #ifndef CGEN_BFD_ARCH | |
662 | #define CGEN_BFD_ARCH bfd_arch_ip2k | |
663 | #endif | |
664 | arch = info->arch; | |
665 | if (arch == bfd_arch_unknown) | |
666 | arch = CGEN_BFD_ARCH; | |
667 | ||
668 | /* There's no standard way to compute the machine or isa number | |
669 | so we leave it to the target. */ | |
670 | #ifdef CGEN_COMPUTE_MACH | |
671 | mach = CGEN_COMPUTE_MACH (info); | |
672 | #else | |
673 | mach = info->mach; | |
674 | #endif | |
675 | ||
676 | #ifdef CGEN_COMPUTE_ISA | |
677 | isa = CGEN_COMPUTE_ISA (info); | |
678 | #else | |
679 | isa = info->insn_sets; | |
680 | #endif | |
681 | ||
682 | /* If we've switched cpu's, try to find a handle we've used before */ | |
683 | if (cd | |
684 | && (isa != prev_isa | |
685 | || mach != prev_mach | |
686 | || endian != prev_endian)) | |
687 | { | |
688 | cd = 0; | |
689 | for (cl = cd_list; cl; cl = cl->next) | |
690 | { | |
691 | if (cl->isa == isa && | |
692 | cl->mach == mach && | |
693 | cl->endian == endian) | |
694 | { | |
695 | cd = cl->cd; | |
696 | break; | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | /* If we haven't initialized yet, initialize the opcode table. */ | |
702 | if (! cd) | |
703 | { | |
704 | const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); | |
705 | const char *mach_name; | |
706 | ||
707 | if (!arch_type) | |
708 | abort (); | |
709 | mach_name = arch_type->printable_name; | |
710 | ||
711 | prev_isa = isa; | |
712 | prev_mach = mach; | |
713 | prev_endian = endian; | |
714 | cd = ip2k_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, | |
715 | CGEN_CPU_OPEN_BFDMACH, mach_name, | |
716 | CGEN_CPU_OPEN_ENDIAN, prev_endian, | |
717 | CGEN_CPU_OPEN_END); | |
718 | if (!cd) | |
719 | abort (); | |
720 | ||
721 | /* save this away for future reference */ | |
722 | cl = xmalloc (sizeof (struct cpu_desc_list)); | |
723 | cl->cd = cd; | |
724 | cl->isa = isa; | |
725 | cl->mach = mach; | |
726 | cl->endian = endian; | |
727 | cl->next = cd_list; | |
728 | cd_list = cl; | |
729 | ||
730 | ip2k_cgen_init_dis (cd); | |
731 | } | |
732 | ||
733 | /* We try to have as much common code as possible. | |
734 | But at this point some targets need to take over. */ | |
735 | /* ??? Some targets may need a hook elsewhere. Try to avoid this, | |
736 | but if not possible try to move this hook elsewhere rather than | |
737 | have two hooks. */ | |
738 | length = CGEN_PRINT_INSN (cd, pc, info); | |
739 | if (length > 0) | |
740 | return length; | |
741 | if (length < 0) | |
742 | return -1; | |
743 | ||
744 | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); | |
745 | return cd->default_insn_bitsize / 8; | |
746 | } |