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 1996, 1997, 1998, 1999, 2000, 2001 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 *,
51 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned));
52 static int default_print_insn
53 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
55 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int,
56 CGEN_EXTRACT_INFO *, unsigned long *));
58 /* -- disassembler routines inserted here */
61 static void print_hash PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
62 static int my_print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
64 /* Immediate values are prefixed with '#'. */
66 #define CGEN_PRINT_NORMAL(cd, info, value, attrs, pc, length) \
69 if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_HASH_PREFIX)) \
70 (*info->fprintf_func) (info->stream, "#"); \
74 /* Handle '#' prefixes as operands. */
77 print_hash (cd, dis_info, value, attrs, pc, length)
78 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
80 long value ATTRIBUTE_UNUSED;
81 unsigned int attrs ATTRIBUTE_UNUSED;
82 bfd_vma pc ATTRIBUTE_UNUSED;
83 int length ATTRIBUTE_UNUSED;
85 disassemble_info *info = (disassemble_info *) dis_info;
86 (*info->fprintf_func) (info->stream, "#");
89 #undef CGEN_PRINT_INSN
90 #define CGEN_PRINT_INSN my_print_insn
93 my_print_insn (cd, pc, info)
96 disassemble_info *info;
98 char buffer[CGEN_MAX_INSN_SIZE];
101 int buflen = (pc & 3) == 0 ? 4 : 2;
103 /* Read the base part of the insn. */
105 status = (*info->read_memory_func) (pc, buf, buflen, info);
108 (*info->memory_error_func) (status, pc, info);
113 if ((pc & 3) == 0 && (buf[0] & 0x80) != 0)
114 return print_insn (cd, pc, info, buf, buflen);
116 /* Print the first insn. */
119 if (print_insn (cd, pc, info, buf, 2) == 0)
120 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
127 (*info->fprintf_func) (info->stream, " || ");
131 (*info->fprintf_func) (info->stream, " -> ");
133 /* The "& 3" is to pass a consistent address.
134 Parallel insns arguably both begin on the word boundary.
135 Also, branch insns are calculated relative to the word boundary. */
136 if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0)
137 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
139 return (pc & 3) ? 2 : 4;
144 void m32r_cgen_print_operand
145 PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *,
146 void const *, bfd_vma, int));
148 /* Main entry point for printing operands.
149 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
150 of dis-asm.h on cgen.h.
152 This function is basically just a big switch statement. Earlier versions
153 used tables to look up the function to use, but
154 - if the table contains both assembler and disassembler functions then
155 the disassembler contains much of the assembler and vice-versa,
156 - there's a lot of inlining possibilities as things grow,
157 - using a switch statement avoids the function call overhead.
159 This function could be moved into `print_insn_normal', but keeping it
160 separate makes clear the interface between `print_insn_normal' and each of
164 m32r_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
169 void const *attrs ATTRIBUTE_UNUSED;
173 disassemble_info *info = (disassemble_info *) xinfo;
177 case M32R_OPERAND_ACC :
178 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_acc, 0);
180 case M32R_OPERAND_ACCD :
181 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accd, 0);
183 case M32R_OPERAND_ACCS :
184 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accs, 0);
186 case M32R_OPERAND_DCR :
187 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r1, 0);
189 case M32R_OPERAND_DISP16 :
190 print_address (cd, info, fields->f_disp16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
192 case M32R_OPERAND_DISP24 :
193 print_address (cd, info, fields->f_disp24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
195 case M32R_OPERAND_DISP8 :
196 print_address (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
198 case M32R_OPERAND_DR :
199 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
201 case M32R_OPERAND_HASH :
202 print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
204 case M32R_OPERAND_HI16 :
205 print_normal (cd, info, fields->f_hi16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
207 case M32R_OPERAND_IMM1 :
208 print_normal (cd, info, fields->f_imm1, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
210 case M32R_OPERAND_SCR :
211 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r2, 0);
213 case M32R_OPERAND_SIMM16 :
214 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
216 case M32R_OPERAND_SIMM8 :
217 print_normal (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
219 case M32R_OPERAND_SLO16 :
220 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
222 case M32R_OPERAND_SR :
223 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
225 case M32R_OPERAND_SRC1 :
226 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
228 case M32R_OPERAND_SRC2 :
229 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
231 case M32R_OPERAND_UIMM16 :
232 print_normal (cd, info, fields->f_uimm16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
234 case M32R_OPERAND_UIMM24 :
235 print_address (cd, info, fields->f_uimm24, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
237 case M32R_OPERAND_UIMM4 :
238 print_normal (cd, info, fields->f_uimm4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
240 case M32R_OPERAND_UIMM5 :
241 print_normal (cd, info, fields->f_uimm5, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
243 case M32R_OPERAND_ULO16 :
244 print_normal (cd, info, fields->f_uimm16, 0, pc, length);
248 /* xgettext:c-format */
249 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
255 cgen_print_fn * const m32r_cgen_print_handlers[] =
262 m32r_cgen_init_dis (cd)
265 m32r_cgen_init_opcode_table (cd);
266 m32r_cgen_init_ibld_table (cd);
267 cd->print_handlers = & m32r_cgen_print_handlers[0];
268 cd->print_operand = m32r_cgen_print_operand;
272 /* Default print handler. */
275 print_normal (cd, dis_info, value, attrs, pc, length)
276 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
280 bfd_vma pc ATTRIBUTE_UNUSED;
281 int length ATTRIBUTE_UNUSED;
283 disassemble_info *info = (disassemble_info *) dis_info;
285 #ifdef CGEN_PRINT_NORMAL
286 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
289 /* Print the operand as directed by the attributes. */
290 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
291 ; /* nothing to do */
292 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
293 (*info->fprintf_func) (info->stream, "%ld", value);
295 (*info->fprintf_func) (info->stream, "0x%lx", value);
298 /* Default address handler. */
301 print_address (cd, dis_info, value, attrs, pc, length)
302 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
306 bfd_vma pc ATTRIBUTE_UNUSED;
307 int length ATTRIBUTE_UNUSED;
309 disassemble_info *info = (disassemble_info *) dis_info;
311 #ifdef CGEN_PRINT_ADDRESS
312 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
315 /* Print the operand as directed by the attributes. */
316 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
317 ; /* nothing to do */
318 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
319 (*info->print_address_func) (value, info);
320 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
321 (*info->print_address_func) (value, info);
322 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
323 (*info->fprintf_func) (info->stream, "%ld", (long) value);
325 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
328 /* Keyword print handler. */
331 print_keyword (cd, dis_info, keyword_table, value, attrs)
332 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
334 CGEN_KEYWORD *keyword_table;
336 unsigned int attrs ATTRIBUTE_UNUSED;
338 disassemble_info *info = (disassemble_info *) dis_info;
339 const CGEN_KEYWORD_ENTRY *ke;
341 ke = cgen_keyword_lookup_value (keyword_table, value);
343 (*info->fprintf_func) (info->stream, "%s", ke->name);
345 (*info->fprintf_func) (info->stream, "???");
348 /* Default insn printer.
350 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
351 about disassemble_info. */
354 print_insn_normal (cd, dis_info, insn, fields, pc, length)
357 const CGEN_INSN *insn;
362 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
363 disassemble_info *info = (disassemble_info *) dis_info;
364 const CGEN_SYNTAX_CHAR_TYPE *syn;
366 CGEN_INIT_PRINT (cd);
368 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
370 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
372 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
375 if (CGEN_SYNTAX_CHAR_P (*syn))
377 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
381 /* We have an operand. */
382 m32r_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
383 fields, CGEN_INSN_ATTRS (insn), pc, length);
387 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
389 Returns 0 if all is well, non-zero otherwise. */
392 read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
393 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
395 disassemble_info *info;
398 CGEN_EXTRACT_INFO *ex_info;
399 unsigned long *insn_value;
401 int status = (*info->read_memory_func) (pc, buf, buflen, info);
404 (*info->memory_error_func) (status, pc, info);
408 ex_info->dis_info = info;
409 ex_info->valid = (1 << buflen) - 1;
410 ex_info->insn_bytes = buf;
412 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
416 /* Utility to print an insn.
417 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
418 The result is the size of the insn in bytes or zero for an unknown insn
419 or -1 if an error occurs fetching data (memory_error_func will have
423 print_insn (cd, pc, info, buf, buflen)
426 disassemble_info *info;
430 CGEN_INSN_INT insn_value;
431 const CGEN_INSN_LIST *insn_list;
432 CGEN_EXTRACT_INFO ex_info;
435 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
436 basesize = cd->base_insn_bitsize < buflen * 8 ?
437 cd->base_insn_bitsize : buflen * 8;
438 insn_value = cgen_get_insn_value (cd, buf, basesize);
441 /* Fill in ex_info fields like read_insn would. Don't actually call
442 read_insn, since the incoming buffer is already read (and possibly
443 modified a la m32r). */
444 ex_info.valid = (1 << buflen) - 1;
445 ex_info.dis_info = info;
446 ex_info.insn_bytes = buf;
448 /* The instructions are stored in hash lists.
449 Pick the first one and keep trying until we find the right one. */
451 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
452 while (insn_list != NULL)
454 const CGEN_INSN *insn = insn_list->insn;
457 unsigned long insn_value_cropped;
459 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
460 /* Not needed as insn shouldn't be in hash lists if not supported. */
461 /* Supported by this cpu? */
462 if (! m32r_cgen_insn_supported (cd, insn))
464 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
469 /* Basic bit mask must be correct. */
470 /* ??? May wish to allow target to defer this check until the extract
473 /* Base size may exceed this instruction's size. Extract the
474 relevant part from the buffer. */
475 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
476 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
477 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
478 info->endian == BFD_ENDIAN_BIG);
480 insn_value_cropped = insn_value;
482 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
483 == CGEN_INSN_BASE_VALUE (insn))
485 /* Printing is handled in two passes. The first pass parses the
486 machine insn and extracts the fields. The second pass prints
489 /* Make sure the entire insn is loaded into insn_value, if it
491 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
492 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
494 unsigned long full_insn_value;
495 int rc = read_insn (cd, pc, info, buf,
496 CGEN_INSN_BITSIZE (insn) / 8,
497 & ex_info, & full_insn_value);
500 length = CGEN_EXTRACT_FN (cd, insn)
501 (cd, insn, &ex_info, full_insn_value, &fields, pc);
504 length = CGEN_EXTRACT_FN (cd, insn)
505 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
507 /* length < 0 -> error */
512 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
513 /* length is in bits, result is in bytes */
518 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
524 /* Default value for CGEN_PRINT_INSN.
525 The result is the size of the insn in bytes or zero for an unknown insn
526 or -1 if an error occured fetching bytes. */
528 #ifndef CGEN_PRINT_INSN
529 #define CGEN_PRINT_INSN default_print_insn
533 default_print_insn (cd, pc, info)
536 disassemble_info *info;
538 char buf[CGEN_MAX_INSN_SIZE];
542 /* Attempt to read the base part of the insn. */
543 buflen = cd->base_insn_bitsize / 8;
544 status = (*info->read_memory_func) (pc, buf, buflen, info);
546 /* Try again with the minimum part, if min < base. */
547 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
549 buflen = cd->min_insn_bitsize / 8;
550 status = (*info->read_memory_func) (pc, buf, buflen, info);
555 (*info->memory_error_func) (status, pc, info);
559 return print_insn (cd, pc, info, buf, buflen);
563 Print one instruction from PC on INFO->STREAM.
564 Return the size of the instruction (in bytes). */
566 typedef struct cpu_desc_list {
567 struct cpu_desc_list *next;
575 print_insn_m32r (pc, info)
577 disassemble_info *info;
579 static cpu_desc_list *cd_list = 0;
580 cpu_desc_list *cl = 0;
581 static CGEN_CPU_DESC cd = 0;
583 static int prev_mach;
584 static int prev_endian;
587 int endian = (info->endian == BFD_ENDIAN_BIG
589 : CGEN_ENDIAN_LITTLE);
590 enum bfd_architecture arch;
592 /* ??? gdb will set mach but leave the architecture as "unknown" */
593 #ifndef CGEN_BFD_ARCH
594 #define CGEN_BFD_ARCH bfd_arch_m32r
597 if (arch == bfd_arch_unknown)
598 arch = CGEN_BFD_ARCH;
600 /* There's no standard way to compute the machine or isa number
601 so we leave it to the target. */
602 #ifdef CGEN_COMPUTE_MACH
603 mach = CGEN_COMPUTE_MACH (info);
608 #ifdef CGEN_COMPUTE_ISA
609 isa = CGEN_COMPUTE_ISA (info);
611 isa = info->insn_sets;
614 /* If we've switched cpu's, try to find a handle we've used before */
618 || endian != prev_endian))
621 for (cl = cd_list; cl; cl = cl->next)
623 if (cl->isa == isa &&
625 cl->endian == endian)
633 /* If we haven't initialized yet, initialize the opcode table. */
636 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
637 const char *mach_name;
641 mach_name = arch_type->printable_name;
645 prev_endian = endian;
646 cd = m32r_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
647 CGEN_CPU_OPEN_BFDMACH, mach_name,
648 CGEN_CPU_OPEN_ENDIAN, prev_endian,
653 /* save this away for future reference */
654 cl = xmalloc (sizeof (struct cpu_desc_list));
662 m32r_cgen_init_dis (cd);
665 /* We try to have as much common code as possible.
666 But at this point some targets need to take over. */
667 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
668 but if not possible try to move this hook elsewhere rather than
670 length = CGEN_PRINT_INSN (cd, pc, info);
676 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
677 return cd->default_insn_bitsize / 8;