/src/binutils-gdb/opcodes/m32r-dis.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ |
2 | | /* Disassembler interface for targets using CGEN. -*- C -*- |
3 | | CGEN: Cpu tools GENerator |
4 | | |
5 | | THIS FILE IS MACHINE GENERATED WITH CGEN. |
6 | | - the resultant file is machine generated, cgen-dis.in isn't |
7 | | |
8 | | Copyright (C) 1996-2025 Free Software Foundation, Inc. |
9 | | |
10 | | This file is part of libopcodes. |
11 | | |
12 | | This library 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 3, or (at your option) |
15 | | any later version. |
16 | | |
17 | | It is distributed in the hope that it will be useful, but WITHOUT |
18 | | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
19 | | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
20 | | 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 | | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 "disassemble.h" |
33 | | #include "bfd.h" |
34 | | #include "symcat.h" |
35 | | #include "libiberty.h" |
36 | | #include "m32r-desc.h" |
37 | | #include "m32r-opc.h" |
38 | | #include "opintl.h" |
39 | | |
40 | | /* Default text to print if an instruction isn't recognized. */ |
41 | 45.9k | #define UNKNOWN_INSN_MSG _("*unknown*") |
42 | | |
43 | | static void print_normal |
44 | | (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); |
45 | | static void print_address |
46 | | (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED; |
47 | | static void print_keyword |
48 | | (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED; |
49 | | static void print_insn_normal |
50 | | (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); |
51 | | static int print_insn |
52 | | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned); |
53 | | static int default_print_insn |
54 | | (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED; |
55 | | static int read_insn |
56 | | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *, |
57 | | unsigned long *); |
58 | | |
59 | | /* -- disassembler routines inserted here. */ |
60 | | |
61 | | /* -- dis.c */ |
62 | | |
63 | | /* Print signed operands with '#' prefixes. */ |
64 | | |
65 | | static void |
66 | | print_signed_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
67 | | void * dis_info, |
68 | | long value, |
69 | | unsigned int attrs ATTRIBUTE_UNUSED, |
70 | | bfd_vma pc ATTRIBUTE_UNUSED, |
71 | | int length ATTRIBUTE_UNUSED) |
72 | 39.2k | { |
73 | 39.2k | disassemble_info *info = (disassemble_info *) dis_info; |
74 | | |
75 | 39.2k | (*info->fprintf_func) (info->stream, "#"); |
76 | 39.2k | (*info->fprintf_func) (info->stream, "%ld", value); |
77 | 39.2k | } |
78 | | |
79 | | /* Print unsigned operands with '#' prefixes. */ |
80 | | |
81 | | static void |
82 | | print_unsigned_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
83 | | void * dis_info, |
84 | | long value, |
85 | | unsigned int attrs ATTRIBUTE_UNUSED, |
86 | | bfd_vma pc ATTRIBUTE_UNUSED, |
87 | | int length ATTRIBUTE_UNUSED) |
88 | 14.9k | { |
89 | 14.9k | disassemble_info *info = (disassemble_info *) dis_info; |
90 | | |
91 | 14.9k | (*info->fprintf_func) (info->stream, "#"); |
92 | 14.9k | (*info->fprintf_func) (info->stream, "0x%lx", value); |
93 | 14.9k | } |
94 | | |
95 | | /* Handle '#' prefixes as operands. */ |
96 | | |
97 | | static void |
98 | | print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
99 | | void * dis_info, |
100 | | long value ATTRIBUTE_UNUSED, |
101 | | unsigned int attrs ATTRIBUTE_UNUSED, |
102 | | bfd_vma pc ATTRIBUTE_UNUSED, |
103 | | int length ATTRIBUTE_UNUSED) |
104 | 1.55k | { |
105 | 1.55k | disassemble_info *info = (disassemble_info *) dis_info; |
106 | | |
107 | 1.55k | (*info->fprintf_func) (info->stream, "#"); |
108 | 1.55k | } |
109 | | |
110 | | #undef CGEN_PRINT_INSN |
111 | 172k | #define CGEN_PRINT_INSN my_print_insn |
112 | | |
113 | | static int |
114 | | my_print_insn (CGEN_CPU_DESC cd, |
115 | | bfd_vma pc, |
116 | | disassemble_info *info) |
117 | 172k | { |
118 | 172k | bfd_byte buffer[CGEN_MAX_INSN_SIZE]; |
119 | 172k | bfd_byte *buf = buffer; |
120 | 172k | int status; |
121 | 172k | int buflen = (pc & 3) == 0 ? 4 : 2; |
122 | 172k | int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG; |
123 | 172k | bfd_byte *x; |
124 | | |
125 | | /* Read the base part of the insn. */ |
126 | | |
127 | 172k | status = (*info->read_memory_func) (pc - ((!big_p && (pc & 3) != 0) ? 2 : 0), |
128 | 172k | buf, buflen, info); |
129 | 172k | if (status != 0) |
130 | 228 | { |
131 | 228 | (*info->memory_error_func) (status, pc, info); |
132 | 228 | return -1; |
133 | 228 | } |
134 | | |
135 | | /* 32 bit insn? */ |
136 | 172k | x = (big_p ? &buf[0] : &buf[3]); |
137 | 172k | if ((pc & 3) == 0 && (*x & 0x80) != 0) |
138 | 61.6k | return print_insn (cd, pc, info, buf, buflen); |
139 | | |
140 | | /* Print the first insn. */ |
141 | 110k | if ((pc & 3) == 0) |
142 | 110k | { |
143 | 110k | buf += (big_p ? 0 : 2); |
144 | 110k | if (print_insn (cd, pc, info, buf, 2) == 0) |
145 | 9.30k | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); |
146 | 110k | buf += (big_p ? 2 : -2); |
147 | 110k | } |
148 | | |
149 | 110k | x = (big_p ? &buf[0] : &buf[1]); |
150 | 110k | if (*x & 0x80) |
151 | 30.1k | { |
152 | | /* Parallel. */ |
153 | 30.1k | (*info->fprintf_func) (info->stream, " || "); |
154 | 30.1k | *x &= 0x7f; |
155 | 30.1k | } |
156 | 80.7k | else |
157 | 80.7k | (*info->fprintf_func) (info->stream, " -> "); |
158 | | |
159 | | /* The "& 3" is to pass a consistent address. |
160 | | Parallel insns arguably both begin on the word boundary. |
161 | | Also, branch insns are calculated relative to the word boundary. */ |
162 | 110k | if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0) |
163 | 9.54k | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); |
164 | | |
165 | 110k | return (pc & 3) ? 2 : 4; |
166 | 172k | } |
167 | | |
168 | | /* -- */ |
169 | | |
170 | | void m32r_cgen_print_operand |
171 | | (CGEN_CPU_DESC, int, void *, CGEN_FIELDS *, void const *, bfd_vma, int); |
172 | | |
173 | | /* Main entry point for printing operands. |
174 | | XINFO is a `void *' and not a `disassemble_info *' to not put a requirement |
175 | | of dis-asm.h on cgen.h. |
176 | | |
177 | | This function is basically just a big switch statement. Earlier versions |
178 | | used tables to look up the function to use, but |
179 | | - if the table contains both assembler and disassembler functions then |
180 | | the disassembler contains much of the assembler and vice-versa, |
181 | | - there's a lot of inlining possibilities as things grow, |
182 | | - using a switch statement avoids the function call overhead. |
183 | | |
184 | | This function could be moved into `print_insn_normal', but keeping it |
185 | | separate makes clear the interface between `print_insn_normal' and each of |
186 | | the handlers. */ |
187 | | |
188 | | void |
189 | | m32r_cgen_print_operand (CGEN_CPU_DESC cd, |
190 | | int opindex, |
191 | | void * xinfo, |
192 | | CGEN_FIELDS *fields, |
193 | | void const *attrs ATTRIBUTE_UNUSED, |
194 | | bfd_vma pc, |
195 | | int length) |
196 | 465k | { |
197 | 465k | disassemble_info *info = (disassemble_info *) xinfo; |
198 | | |
199 | 465k | switch (opindex) |
200 | 465k | { |
201 | 4.64k | case M32R_OPERAND_ACC : |
202 | 4.64k | print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_acc, 0); |
203 | 4.64k | break; |
204 | 283 | case M32R_OPERAND_ACCD : |
205 | 283 | print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accd, 0); |
206 | 283 | break; |
207 | 732 | case M32R_OPERAND_ACCS : |
208 | 732 | print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accs, 0); |
209 | 732 | break; |
210 | 654 | case M32R_OPERAND_DCR : |
211 | 654 | print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r1, 0); |
212 | 654 | break; |
213 | 1.82k | case M32R_OPERAND_DISP16 : |
214 | 1.82k | print_address (cd, info, fields->f_disp16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); |
215 | 1.82k | break; |
216 | 14.0k | case M32R_OPERAND_DISP24 : |
217 | 14.0k | print_address (cd, info, fields->f_disp24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); |
218 | 14.0k | break; |
219 | 9.38k | case M32R_OPERAND_DISP8 : |
220 | 9.38k | print_address (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); |
221 | 9.38k | break; |
222 | 167k | case M32R_OPERAND_DR : |
223 | 167k | print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0); |
224 | 167k | break; |
225 | 1.55k | case M32R_OPERAND_HASH : |
226 | 1.55k | print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
227 | 1.55k | break; |
228 | 107 | case M32R_OPERAND_HI16 : |
229 | 107 | print_normal (cd, info, fields->f_hi16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length); |
230 | 107 | break; |
231 | 129 | case M32R_OPERAND_IMM1 : |
232 | 129 | print_unsigned_with_hash_prefix (cd, info, fields->f_imm1, 0, pc, length); |
233 | 129 | break; |
234 | 812 | case M32R_OPERAND_SCR : |
235 | 812 | print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r2, 0); |
236 | 812 | break; |
237 | 2.77k | case M32R_OPERAND_SIMM16 : |
238 | 2.77k | print_signed_with_hash_prefix (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
239 | 2.77k | break; |
240 | 36.5k | case M32R_OPERAND_SIMM8 : |
241 | 36.5k | print_signed_with_hash_prefix (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
242 | 36.5k | break; |
243 | 5.82k | case M32R_OPERAND_SLO16 : |
244 | 5.82k | print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
245 | 5.82k | break; |
246 | 120k | case M32R_OPERAND_SR : |
247 | 120k | print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0); |
248 | 120k | break; |
249 | 36.9k | case M32R_OPERAND_SRC1 : |
250 | 36.9k | print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0); |
251 | 36.9k | break; |
252 | 38.2k | case M32R_OPERAND_SRC2 : |
253 | 38.2k | print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0); |
254 | 38.2k | break; |
255 | 1.45k | case M32R_OPERAND_UIMM16 : |
256 | 1.45k | print_unsigned_with_hash_prefix (cd, info, fields->f_uimm16, 0, pc, length); |
257 | 1.45k | break; |
258 | 7.50k | case M32R_OPERAND_UIMM24 : |
259 | 7.50k | print_address (cd, info, fields->f_uimm24, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length); |
260 | 7.50k | break; |
261 | 4.48k | case M32R_OPERAND_UIMM3 : |
262 | 4.48k | print_unsigned_with_hash_prefix (cd, info, fields->f_uimm3, 0, pc, length); |
263 | 4.48k | break; |
264 | 180 | case M32R_OPERAND_UIMM4 : |
265 | 180 | print_unsigned_with_hash_prefix (cd, info, fields->f_uimm4, 0, pc, length); |
266 | 180 | break; |
267 | 6.13k | case M32R_OPERAND_UIMM5 : |
268 | 6.13k | print_unsigned_with_hash_prefix (cd, info, fields->f_uimm5, 0, pc, length); |
269 | 6.13k | break; |
270 | 2.52k | case M32R_OPERAND_UIMM8 : |
271 | 2.52k | print_unsigned_with_hash_prefix (cd, info, fields->f_uimm8, 0, pc, length); |
272 | 2.52k | break; |
273 | 731 | case M32R_OPERAND_ULO16 : |
274 | 731 | print_normal (cd, info, fields->f_uimm16, 0, pc, length); |
275 | 731 | break; |
276 | | |
277 | 0 | default : |
278 | | /* xgettext:c-format */ |
279 | 0 | opcodes_error_handler |
280 | 0 | (_("internal error: unrecognized field %d while printing insn"), |
281 | 0 | opindex); |
282 | 0 | abort (); |
283 | 465k | } |
284 | 465k | } |
285 | | |
286 | | cgen_print_fn * const m32r_cgen_print_handlers[] = |
287 | | { |
288 | | print_insn_normal, |
289 | | }; |
290 | | |
291 | | |
292 | | void |
293 | | m32r_cgen_init_dis (CGEN_CPU_DESC cd) |
294 | 5 | { |
295 | 5 | m32r_cgen_init_opcode_table (cd); |
296 | 5 | m32r_cgen_init_ibld_table (cd); |
297 | 5 | cd->print_handlers = & m32r_cgen_print_handlers[0]; |
298 | 5 | cd->print_operand = m32r_cgen_print_operand; |
299 | 5 | } |
300 | | |
301 | | |
302 | | /* Default print handler. */ |
303 | | |
304 | | static void |
305 | | print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
306 | | void *dis_info, |
307 | | long value, |
308 | | unsigned int attrs, |
309 | | bfd_vma pc ATTRIBUTE_UNUSED, |
310 | | int length ATTRIBUTE_UNUSED) |
311 | 6.66k | { |
312 | 6.66k | disassemble_info *info = (disassemble_info *) dis_info; |
313 | | |
314 | | /* Print the operand as directed by the attributes. */ |
315 | 6.66k | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) |
316 | 0 | ; /* nothing to do */ |
317 | 6.66k | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) |
318 | 5.82k | (*info->fprintf_func) (info->stream, "%ld", value); |
319 | 838 | else |
320 | 838 | (*info->fprintf_func) (info->stream, "0x%lx", value); |
321 | 6.66k | } |
322 | | |
323 | | /* Default address handler. */ |
324 | | |
325 | | static void |
326 | | print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
327 | | void *dis_info, |
328 | | bfd_vma value, |
329 | | unsigned int attrs, |
330 | | bfd_vma pc ATTRIBUTE_UNUSED, |
331 | | int length ATTRIBUTE_UNUSED) |
332 | 32.7k | { |
333 | 32.7k | disassemble_info *info = (disassemble_info *) dis_info; |
334 | | |
335 | | /* Print the operand as directed by the attributes. */ |
336 | 32.7k | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) |
337 | 0 | ; /* Nothing to do. */ |
338 | 32.7k | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) |
339 | 25.2k | (*info->print_address_func) (value, info); |
340 | 7.50k | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) |
341 | 7.50k | (*info->print_address_func) (value, info); |
342 | 0 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) |
343 | 0 | (*info->fprintf_func) (info->stream, "%ld", (long) value); |
344 | 0 | else |
345 | 0 | (*info->fprintf_func) (info->stream, "0x%lx", (long) value); |
346 | 32.7k | } |
347 | | |
348 | | /* Keyword print handler. */ |
349 | | |
350 | | static void |
351 | | print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
352 | | void *dis_info, |
353 | | CGEN_KEYWORD *keyword_table, |
354 | | long value, |
355 | | unsigned int attrs ATTRIBUTE_UNUSED) |
356 | 370k | { |
357 | 370k | disassemble_info *info = (disassemble_info *) dis_info; |
358 | 370k | const CGEN_KEYWORD_ENTRY *ke; |
359 | | |
360 | 370k | ke = cgen_keyword_lookup_value (keyword_table, value); |
361 | 370k | if (ke != NULL) |
362 | 369k | (*info->fprintf_func) (info->stream, "%s", ke->name); |
363 | 609 | else |
364 | 609 | (*info->fprintf_func) (info->stream, "???"); |
365 | 370k | } |
366 | | |
367 | | /* Default insn printer. |
368 | | |
369 | | DIS_INFO is defined as `void *' so the disassembler needn't know anything |
370 | | about disassemble_info. */ |
371 | | |
372 | | static void |
373 | | print_insn_normal (CGEN_CPU_DESC cd, |
374 | | void *dis_info, |
375 | | const CGEN_INSN *insn, |
376 | | CGEN_FIELDS *fields, |
377 | | bfd_vma pc, |
378 | | int length) |
379 | 237k | { |
380 | 237k | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); |
381 | 237k | disassemble_info *info = (disassemble_info *) dis_info; |
382 | 237k | const CGEN_SYNTAX_CHAR_TYPE *syn; |
383 | | |
384 | 237k | CGEN_INIT_PRINT (cd); |
385 | | |
386 | 1.43M | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) |
387 | 1.19M | { |
388 | 1.19M | if (CGEN_SYNTAX_MNEMONIC_P (*syn)) |
389 | 237k | { |
390 | 237k | (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); |
391 | 237k | continue; |
392 | 237k | } |
393 | 961k | if (CGEN_SYNTAX_CHAR_P (*syn)) |
394 | 496k | { |
395 | 496k | (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); |
396 | 496k | continue; |
397 | 496k | } |
398 | | |
399 | | /* We have an operand. */ |
400 | 465k | m32r_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, |
401 | 465k | fields, CGEN_INSN_ATTRS (insn), pc, length); |
402 | 465k | } |
403 | 237k | } |
404 | | |
405 | | /* Subroutine of print_insn. Reads an insn into the given buffers and updates |
406 | | the extract info. |
407 | | Returns 0 if all is well, non-zero otherwise. */ |
408 | | |
409 | | static int |
410 | | read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
411 | | bfd_vma pc, |
412 | | disassemble_info *info, |
413 | | bfd_byte *buf, |
414 | | int buflen, |
415 | | CGEN_EXTRACT_INFO *ex_info, |
416 | | unsigned long *insn_value) |
417 | 0 | { |
418 | 0 | int status = (*info->read_memory_func) (pc, buf, buflen, info); |
419 | |
|
420 | 0 | if (status != 0) |
421 | 0 | { |
422 | 0 | (*info->memory_error_func) (status, pc, info); |
423 | 0 | return -1; |
424 | 0 | } |
425 | | |
426 | 0 | ex_info->dis_info = info; |
427 | 0 | ex_info->valid = (1 << buflen) - 1; |
428 | 0 | ex_info->insn_bytes = buf; |
429 | |
|
430 | 0 | *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); |
431 | 0 | return 0; |
432 | 0 | } |
433 | | |
434 | | /* Utility to print an insn. |
435 | | BUF is the base part of the insn, target byte order, BUFLEN bytes long. |
436 | | The result is the size of the insn in bytes or zero for an unknown insn |
437 | | or -1 if an error occurs fetching data (memory_error_func will have |
438 | | been called). */ |
439 | | |
440 | | static int |
441 | | print_insn (CGEN_CPU_DESC cd, |
442 | | bfd_vma pc, |
443 | | disassemble_info *info, |
444 | | bfd_byte *buf, |
445 | | unsigned int buflen) |
446 | 283k | { |
447 | 283k | CGEN_INSN_INT insn_value; |
448 | 283k | const CGEN_INSN_LIST *insn_list; |
449 | 283k | CGEN_EXTRACT_INFO ex_info; |
450 | 283k | int basesize; |
451 | | |
452 | | /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ |
453 | 283k | basesize = cd->base_insn_bitsize < buflen * 8 ? |
454 | 283k | cd->base_insn_bitsize : buflen * 8; |
455 | 283k | insn_value = cgen_get_insn_value (cd, buf, basesize, cd->insn_endian); |
456 | | |
457 | | |
458 | | /* Fill in ex_info fields like read_insn would. Don't actually call |
459 | | read_insn, since the incoming buffer is already read (and possibly |
460 | | modified a la m32r). */ |
461 | 283k | ex_info.valid = (1 << buflen) - 1; |
462 | 283k | ex_info.dis_info = info; |
463 | 283k | ex_info.insn_bytes = buf; |
464 | | |
465 | | /* The instructions are stored in hash lists. |
466 | | Pick the first one and keep trying until we find the right one. */ |
467 | | |
468 | 283k | insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value); |
469 | 547k | while (insn_list != NULL) |
470 | 501k | { |
471 | 501k | const CGEN_INSN *insn = insn_list->insn; |
472 | 501k | CGEN_FIELDS fields; |
473 | 501k | int length; |
474 | 501k | unsigned long insn_value_cropped; |
475 | | |
476 | | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
477 | | /* Not needed as insn shouldn't be in hash lists if not supported. */ |
478 | | /* Supported by this cpu? */ |
479 | | if (! m32r_cgen_insn_supported (cd, insn)) |
480 | | { |
481 | | insn_list = CGEN_DIS_NEXT_INSN (insn_list); |
482 | | continue; |
483 | | } |
484 | | #endif |
485 | | |
486 | | /* Basic bit mask must be correct. */ |
487 | | /* ??? May wish to allow target to defer this check until the extract |
488 | | handler. */ |
489 | | |
490 | | /* Base size may exceed this instruction's size. Extract the |
491 | | relevant part from the buffer. */ |
492 | 501k | if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && |
493 | 501k | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) |
494 | 0 | insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), |
495 | 0 | info->endian == BFD_ENDIAN_BIG); |
496 | 501k | else |
497 | 501k | insn_value_cropped = insn_value; |
498 | | |
499 | 501k | if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) |
500 | 501k | == CGEN_INSN_BASE_VALUE (insn)) |
501 | 237k | { |
502 | | /* Printing is handled in two passes. The first pass parses the |
503 | | machine insn and extracts the fields. The second pass prints |
504 | | them. */ |
505 | | |
506 | | /* Make sure the entire insn is loaded into insn_value, if it |
507 | | can fit. */ |
508 | 237k | if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && |
509 | 237k | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) |
510 | 0 | { |
511 | 0 | unsigned long full_insn_value; |
512 | 0 | int rc = read_insn (cd, pc, info, buf, |
513 | 0 | CGEN_INSN_BITSIZE (insn) / 8, |
514 | 0 | & ex_info, & full_insn_value); |
515 | 0 | if (rc != 0) |
516 | 0 | return rc; |
517 | 0 | length = CGEN_EXTRACT_FN (cd, insn) |
518 | 0 | (cd, insn, &ex_info, full_insn_value, &fields, pc); |
519 | 0 | } |
520 | 237k | else |
521 | 237k | length = CGEN_EXTRACT_FN (cd, insn) |
522 | 237k | (cd, insn, &ex_info, insn_value_cropped, &fields, pc); |
523 | | |
524 | | /* Length < 0 -> error. */ |
525 | 237k | if (length < 0) |
526 | 0 | return length; |
527 | 237k | if (length > 0) |
528 | 237k | { |
529 | 237k | CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); |
530 | | /* Length is in bits, result is in bytes. */ |
531 | 237k | return length / 8; |
532 | 237k | } |
533 | 237k | } |
534 | | |
535 | 263k | insn_list = CGEN_DIS_NEXT_INSN (insn_list); |
536 | 263k | } |
537 | | |
538 | 45.9k | return 0; |
539 | 283k | } |
540 | | |
541 | | /* Default value for CGEN_PRINT_INSN. |
542 | | The result is the size of the insn in bytes or zero for an unknown insn |
543 | | or -1 if an error occured fetching bytes. */ |
544 | | |
545 | | #ifndef CGEN_PRINT_INSN |
546 | | #define CGEN_PRINT_INSN default_print_insn |
547 | | #endif |
548 | | |
549 | | static int |
550 | | default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) |
551 | 0 | { |
552 | 0 | bfd_byte buf[CGEN_MAX_INSN_SIZE]; |
553 | 0 | int buflen; |
554 | 0 | int status; |
555 | 0 |
|
556 | 0 | /* Attempt to read the base part of the insn. */ |
557 | 0 | buflen = cd->base_insn_bitsize / 8; |
558 | 0 | status = (*info->read_memory_func) (pc, buf, buflen, info); |
559 | 0 |
|
560 | 0 | /* Try again with the minimum part, if min < base. */ |
561 | 0 | if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) |
562 | 0 | { |
563 | 0 | buflen = cd->min_insn_bitsize / 8; |
564 | 0 | status = (*info->read_memory_func) (pc, buf, buflen, info); |
565 | 0 | } |
566 | 0 |
|
567 | 0 | if (status != 0) |
568 | 0 | { |
569 | 0 | (*info->memory_error_func) (status, pc, info); |
570 | 0 | return -1; |
571 | 0 | } |
572 | 0 |
|
573 | 0 | return print_insn (cd, pc, info, buf, buflen); |
574 | 0 | } |
575 | | |
576 | | /* Main entry point. |
577 | | Print one instruction from PC on INFO->STREAM. |
578 | | Return the size of the instruction (in bytes). */ |
579 | | |
580 | | typedef struct cpu_desc_list |
581 | | { |
582 | | struct cpu_desc_list *next; |
583 | | CGEN_BITSET *isa; |
584 | | int mach; |
585 | | int endian; |
586 | | int insn_endian; |
587 | | CGEN_CPU_DESC cd; |
588 | | } cpu_desc_list; |
589 | | |
590 | | int |
591 | | print_insn_m32r (bfd_vma pc, disassemble_info *info) |
592 | 172k | { |
593 | 172k | static cpu_desc_list *cd_list = 0; |
594 | 172k | cpu_desc_list *cl = 0; |
595 | 172k | static CGEN_CPU_DESC cd = 0; |
596 | 172k | static CGEN_BITSET *prev_isa; |
597 | 172k | static int prev_mach; |
598 | 172k | static int prev_endian; |
599 | 172k | static int prev_insn_endian; |
600 | 172k | int length; |
601 | 172k | CGEN_BITSET *isa; |
602 | 172k | int mach; |
603 | 172k | int endian = (info->endian == BFD_ENDIAN_BIG |
604 | 172k | ? CGEN_ENDIAN_BIG |
605 | 172k | : CGEN_ENDIAN_LITTLE); |
606 | 172k | int insn_endian = (info->endian_code == BFD_ENDIAN_BIG |
607 | 172k | ? CGEN_ENDIAN_BIG |
608 | 172k | : CGEN_ENDIAN_LITTLE); |
609 | 172k | enum bfd_architecture arch; |
610 | | |
611 | | /* ??? gdb will set mach but leave the architecture as "unknown" */ |
612 | 172k | #ifndef CGEN_BFD_ARCH |
613 | 172k | #define CGEN_BFD_ARCH bfd_arch_m32r |
614 | 172k | #endif |
615 | 172k | arch = info->arch; |
616 | 172k | if (arch == bfd_arch_unknown) |
617 | 0 | arch = CGEN_BFD_ARCH; |
618 | | |
619 | | /* There's no standard way to compute the machine or isa number |
620 | | so we leave it to the target. */ |
621 | | #ifdef CGEN_COMPUTE_MACH |
622 | | mach = CGEN_COMPUTE_MACH (info); |
623 | | #else |
624 | 172k | mach = info->mach; |
625 | 172k | #endif |
626 | | |
627 | | #ifdef CGEN_COMPUTE_ISA |
628 | | { |
629 | | static CGEN_BITSET *permanent_isa; |
630 | | |
631 | | if (!permanent_isa) |
632 | | permanent_isa = cgen_bitset_create (MAX_ISAS); |
633 | | isa = permanent_isa; |
634 | | cgen_bitset_clear (isa); |
635 | | cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info)); |
636 | | } |
637 | | #else |
638 | 172k | isa = info->private_data; |
639 | 172k | #endif |
640 | | |
641 | | /* If we've switched cpu's, try to find a handle we've used before */ |
642 | 172k | if (cd |
643 | 172k | && (cgen_bitset_compare (isa, prev_isa) != 0 |
644 | 172k | || mach != prev_mach |
645 | 172k | || endian != prev_endian)) |
646 | 58.4k | { |
647 | 58.4k | cd = 0; |
648 | 233k | for (cl = cd_list; cl; cl = cl->next) |
649 | 233k | { |
650 | 233k | if (cgen_bitset_compare (cl->isa, isa) == 0 && |
651 | 233k | cl->mach == mach && |
652 | 233k | cl->endian == endian) |
653 | 58.4k | { |
654 | 58.4k | cd = cl->cd; |
655 | 58.4k | prev_isa = cd->isas; |
656 | 58.4k | break; |
657 | 58.4k | } |
658 | 233k | } |
659 | 58.4k | } |
660 | | |
661 | | /* If we haven't initialized yet, initialize the opcode table. */ |
662 | 172k | if (! cd) |
663 | 5 | { |
664 | 5 | const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); |
665 | 5 | const char *mach_name; |
666 | | |
667 | 5 | if (!arch_type) |
668 | 0 | abort (); |
669 | 5 | mach_name = arch_type->printable_name; |
670 | | |
671 | 5 | prev_isa = cgen_bitset_copy (isa); |
672 | 5 | prev_mach = mach; |
673 | 5 | prev_endian = endian; |
674 | 5 | prev_insn_endian = insn_endian; |
675 | 5 | cd = m32r_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, |
676 | 5 | CGEN_CPU_OPEN_BFDMACH, mach_name, |
677 | 5 | CGEN_CPU_OPEN_ENDIAN, prev_endian, |
678 | 5 | CGEN_CPU_OPEN_INSN_ENDIAN, prev_insn_endian, |
679 | 5 | CGEN_CPU_OPEN_END); |
680 | 5 | if (!cd) |
681 | 0 | abort (); |
682 | | |
683 | | /* Save this away for future reference. */ |
684 | 5 | cl = xmalloc (sizeof (struct cpu_desc_list)); |
685 | 5 | cl->cd = cd; |
686 | 5 | cl->isa = prev_isa; |
687 | 5 | cl->mach = mach; |
688 | 5 | cl->endian = endian; |
689 | 5 | cl->next = cd_list; |
690 | 5 | cd_list = cl; |
691 | | |
692 | 5 | m32r_cgen_init_dis (cd); |
693 | 5 | } |
694 | | |
695 | | /* We try to have as much common code as possible. |
696 | | But at this point some targets need to take over. */ |
697 | | /* ??? Some targets may need a hook elsewhere. Try to avoid this, |
698 | | but if not possible try to move this hook elsewhere rather than |
699 | | have two hooks. */ |
700 | 172k | length = CGEN_PRINT_INSN (cd, pc, info); |
701 | 172k | if (length > 0) |
702 | 145k | return length; |
703 | 27.3k | if (length < 0) |
704 | 228 | return -1; |
705 | | |
706 | 27.0k | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); |
707 | 27.0k | return cd->default_insn_bitsize / 8; |
708 | 27.3k | } |