1 /* Disassembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-dis.in isn't
7 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
9 This file is part of the GNU Binutils and GDB, the GNU debugger.
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)
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.
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. */
25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
34 #include "m32r-desc.h"
38 /* Default text to print if an instruction isn't recognized. */
39 #define UNKNOWN_INSN_MSG _("*unknown*")
41 static void print_normal
42 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int));
43 static void print_address
44 PARAMS ((CGEN_CPU_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int));
45 static void print_keyword
46 PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int));
47 static void print_insn_normal
48 PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
50 static int print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma,
51 disassemble_info *, char *, int));
52 static int default_print_insn
53 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
55 /* -- disassembler routines inserted here */
59 /* Immediate values are prefixed with '#'. */
61 #define CGEN_PRINT_NORMAL(cd, info, value, attrs, pc, length) \
63 if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_HASH_PREFIX)) \
64 (*info->fprintf_func) (info->stream, "#"); \
67 /* Handle '#' prefixes as operands. */
70 print_hash (cd, dis_info, value, attrs, pc, length)
78 disassemble_info *info = (disassemble_info *) dis_info;
79 (*info->fprintf_func) (info->stream, "#");
82 #undef CGEN_PRINT_INSN
83 #define CGEN_PRINT_INSN my_print_insn
86 my_print_insn (cd, pc, info)
89 disassemble_info *info;
91 char buffer[CGEN_MAX_INSN_SIZE];
94 int buflen = (pc & 3) == 0 ? 4 : 2;
96 /* Read the base part of the insn. */
98 status = (*info->read_memory_func) (pc, buf, buflen, info);
101 (*info->memory_error_func) (status, pc, info);
106 if ((pc & 3) == 0 && (buf[0] & 0x80) != 0)
107 return print_insn (cd, pc, info, buf, buflen);
109 /* Print the first insn. */
112 if (print_insn (cd, pc, info, buf, 2) == 0)
113 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
120 (*info->fprintf_func) (info->stream, " || ");
124 (*info->fprintf_func) (info->stream, " -> ");
126 /* The "& 3" is to pass a consistent address.
127 Parallel insns arguably both begin on the word boundary.
128 Also, branch insns are calculated relative to the word boundary. */
129 if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0)
130 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
132 return (pc & 3) ? 2 : 4;
137 /* Main entry point for printing operands.
138 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
139 of dis-asm.h on cgen.h.
141 This function is basically just a big switch statement. Earlier versions
142 used tables to look up the function to use, but
143 - if the table contains both assembler and disassembler functions then
144 the disassembler contains much of the assembler and vice-versa,
145 - there's a lot of inlining possibilities as things grow,
146 - using a switch statement avoids the function call overhead.
148 This function could be moved into `print_insn_normal', but keeping it
149 separate makes clear the interface between `print_insn_normal' and each of
154 m32r_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
163 disassemble_info *info = (disassemble_info *) xinfo;
167 case M32R_OPERAND_ACC :
168 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_acc, 0);
170 case M32R_OPERAND_ACCD :
171 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accd, 0);
173 case M32R_OPERAND_ACCS :
174 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accs, 0);
176 case M32R_OPERAND_DCR :
177 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r1, 0);
179 case M32R_OPERAND_DISP16 :
180 print_address (cd, info, fields->f_disp16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
182 case M32R_OPERAND_DISP24 :
183 print_address (cd, info, fields->f_disp24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
185 case M32R_OPERAND_DISP8 :
186 print_address (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
188 case M32R_OPERAND_DR :
189 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
191 case M32R_OPERAND_HASH :
192 print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
194 case M32R_OPERAND_HI16 :
195 print_normal (cd, info, fields->f_hi16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
197 case M32R_OPERAND_IMM1 :
198 print_normal (cd, info, fields->f_imm1, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
200 case M32R_OPERAND_SCR :
201 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r2, 0);
203 case M32R_OPERAND_SIMM16 :
204 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
206 case M32R_OPERAND_SIMM8 :
207 print_normal (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
209 case M32R_OPERAND_SLO16 :
210 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
212 case M32R_OPERAND_SR :
213 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
215 case M32R_OPERAND_SRC1 :
216 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
218 case M32R_OPERAND_SRC2 :
219 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
221 case M32R_OPERAND_UIMM16 :
222 print_normal (cd, info, fields->f_uimm16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
224 case M32R_OPERAND_UIMM24 :
225 print_address (cd, info, fields->f_uimm24, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
227 case M32R_OPERAND_UIMM4 :
228 print_normal (cd, info, fields->f_uimm4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
230 case M32R_OPERAND_UIMM5 :
231 print_normal (cd, info, fields->f_uimm5, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
233 case M32R_OPERAND_ULO16 :
234 print_normal (cd, info, fields->f_uimm16, 0, pc, length);
238 /* xgettext:c-format */
239 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
245 cgen_print_fn * const m32r_cgen_print_handlers[] =
252 m32r_cgen_init_dis (cd)
255 m32r_cgen_init_opcode_table (cd);
256 m32r_cgen_init_ibld_table (cd);
257 cd->print_handlers = & m32r_cgen_print_handlers[0];
258 cd->print_operand = m32r_cgen_print_operand;
262 /* Default print handler. */
265 print_normal (cd, dis_info, value, attrs, pc, length)
273 disassemble_info *info = (disassemble_info *) dis_info;
275 #ifdef CGEN_PRINT_NORMAL
276 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
279 /* Print the operand as directed by the attributes. */
280 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
281 ; /* nothing to do */
282 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
283 (*info->fprintf_func) (info->stream, "%ld", value);
285 (*info->fprintf_func) (info->stream, "0x%lx", value);
288 /* Default address handler. */
291 print_address (cd, dis_info, value, attrs, pc, length)
299 disassemble_info *info = (disassemble_info *) dis_info;
301 #ifdef CGEN_PRINT_ADDRESS
302 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
305 /* Print the operand as directed by the attributes. */
306 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
307 ; /* nothing to do */
308 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
309 (*info->print_address_func) (value, info);
310 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
311 (*info->print_address_func) (value, info);
312 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
313 (*info->fprintf_func) (info->stream, "%ld", (long) value);
315 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
318 /* Keyword print handler. */
321 print_keyword (cd, dis_info, keyword_table, value, attrs)
324 CGEN_KEYWORD *keyword_table;
328 disassemble_info *info = (disassemble_info *) dis_info;
329 const CGEN_KEYWORD_ENTRY *ke;
331 ke = cgen_keyword_lookup_value (keyword_table, value);
333 (*info->fprintf_func) (info->stream, "%s", ke->name);
335 (*info->fprintf_func) (info->stream, "???");
338 /* Default insn printer.
340 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
341 about disassemble_info. */
344 print_insn_normal (cd, dis_info, insn, fields, pc, length)
347 const CGEN_INSN *insn;
352 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
353 disassemble_info *info = (disassemble_info *) dis_info;
354 const unsigned char *syn;
356 CGEN_INIT_PRINT (cd);
358 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
360 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
362 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
365 if (CGEN_SYNTAX_CHAR_P (*syn))
367 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
371 /* We have an operand. */
372 m32r_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
373 fields, CGEN_INSN_ATTRS (insn), pc, length);
377 /* Utility to print an insn.
378 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
379 The result is the size of the insn in bytes or zero for an unknown insn
380 or -1 if an error occurs fetching data (memory_error_func will have
384 print_insn (cd, pc, info, buf, buflen)
387 disassemble_info *info;
391 unsigned long insn_value;
392 const CGEN_INSN_LIST *insn_list;
393 CGEN_EXTRACT_INFO ex_info;
395 ex_info.dis_info = info;
396 ex_info.valid = (1 << (cd->base_insn_bitsize / 8)) - 1;
397 ex_info.insn_bytes = buf;
405 insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb16 (buf) : bfd_getl16 (buf);
408 insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb32 (buf) : bfd_getl32 (buf);
414 /* The instructions are stored in hash lists.
415 Pick the first one and keep trying until we find the right one. */
417 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
418 while (insn_list != NULL)
420 const CGEN_INSN *insn = insn_list->insn;
424 #if 0 /* not needed as insn shouldn't be in hash lists if not supported */
425 /* Supported by this cpu? */
426 if (! m32r_cgen_insn_supported (cd, insn))
430 /* Basic bit mask must be correct. */
431 /* ??? May wish to allow target to defer this check until the extract
433 if ((insn_value & CGEN_INSN_BASE_MASK (insn))
434 == CGEN_INSN_BASE_VALUE (insn))
436 /* Printing is handled in two passes. The first pass parses the
437 machine insn and extracts the fields. The second pass prints
440 length = CGEN_EXTRACT_FN (cd, insn)
441 (cd, insn, &ex_info, insn_value, &fields, pc);
442 /* length < 0 -> error */
447 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
448 /* length is in bits, result is in bytes */
453 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
459 /* Default value for CGEN_PRINT_INSN.
460 The result is the size of the insn in bytes or zero for an unknown insn
461 or -1 if an error occured fetching bytes. */
463 #ifndef CGEN_PRINT_INSN
464 #define CGEN_PRINT_INSN default_print_insn
468 default_print_insn (cd, pc, info)
471 disassemble_info *info;
473 char buf[CGEN_MAX_INSN_SIZE];
476 /* Read the base part of the insn. */
478 status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info);
481 (*info->memory_error_func) (status, pc, info);
485 return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8);
489 Print one instruction from PC on INFO->STREAM.
490 Return the size of the instruction (in bytes). */
493 print_insn_m32r (pc, info)
495 disassemble_info *info;
497 static CGEN_CPU_DESC cd = 0;
498 static prev_isa,prev_mach,prev_endian;
501 int endian = (info->endian == BFD_ENDIAN_BIG
503 : CGEN_ENDIAN_LITTLE);
504 enum bfd_architecture arch;
506 /* ??? gdb will set mach but leave the architecture as "unknown" */
507 #ifndef CGEN_BFD_ARCH
508 #define CGEN_BFD_ARCH bfd_arch_m32r
511 if (arch == bfd_arch_unknown)
512 arch = CGEN_BFD_ARCH;
514 /* There's no standard way to compute the isa number (e.g. for arm thumb)
515 so we leave it to the target. */
516 #ifdef CGEN_COMPUTE_ISA
517 isa = CGEN_COMPUTE_ISA (info);
524 /* If we've switched cpu's, close the current table and open a new one. */
528 || endian != prev_endian))
530 m32r_cgen_cpu_close (cd);
534 /* If we haven't initialized yet, initialize the opcode table. */
537 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
538 const char *mach_name;
542 mach_name = arch_type->printable_name;
546 prev_endian = endian;
547 cd = m32r_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
548 CGEN_CPU_OPEN_BFDMACH, mach_name,
549 CGEN_CPU_OPEN_ENDIAN, prev_endian,
553 m32r_cgen_init_dis (cd);
556 /* We try to have as much common code as possible.
557 But at this point some targets need to take over. */
558 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
559 but if not possible try to move this hook elsewhere rather than
561 length = CGEN_PRINT_INSN (cd, pc, info);
567 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
568 return cd->default_insn_bitsize / 8;