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 "fr30-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_register_list
62 PARAMS ((PTR, long, long, int));
63 static void print_hi_register_list_ld
64 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
65 static void print_low_register_list_ld
66 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
67 static void print_hi_register_list_st
68 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
69 static void print_low_register_list_st
70 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
72 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
75 print_register_list (dis_info, value, offset, load_store)
79 int load_store; /* 0 == load, 1 == store */
81 disassemble_info *info = dis_info;
93 (*info->fprintf_func) (info->stream, "r%i", index + offset);
97 for (index = 1; index <= 7; ++index)
106 (*info->fprintf_func) (info->stream, "%sr%i", comma, index + offset);
113 print_hi_register_list_ld (cd, dis_info, value, attrs, pc, length)
114 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
117 unsigned int attrs ATTRIBUTE_UNUSED;
118 bfd_vma pc ATTRIBUTE_UNUSED;
119 int length ATTRIBUTE_UNUSED;
121 print_register_list (dis_info, value, 8, 0/*load*/);
125 print_low_register_list_ld (cd, dis_info, value, attrs, pc, length)
126 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
129 unsigned int attrs ATTRIBUTE_UNUSED;
130 bfd_vma pc ATTRIBUTE_UNUSED;
131 int length ATTRIBUTE_UNUSED;
133 print_register_list (dis_info, value, 0, 0/*load*/);
137 print_hi_register_list_st (cd, dis_info, value, attrs, pc, length)
138 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
141 unsigned int attrs ATTRIBUTE_UNUSED;
142 bfd_vma pc ATTRIBUTE_UNUSED;
143 int length ATTRIBUTE_UNUSED;
145 print_register_list (dis_info, value, 8, 1/*store*/);
149 print_low_register_list_st (cd, dis_info, value, attrs, pc, length)
150 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
153 unsigned int attrs ATTRIBUTE_UNUSED;
154 bfd_vma pc ATTRIBUTE_UNUSED;
155 int length ATTRIBUTE_UNUSED;
157 print_register_list (dis_info, value, 0, 1/*store*/);
161 print_m4 (cd, dis_info, value, attrs, pc, length)
162 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
165 unsigned int attrs ATTRIBUTE_UNUSED;
166 bfd_vma pc ATTRIBUTE_UNUSED;
167 int length ATTRIBUTE_UNUSED;
169 disassemble_info *info = (disassemble_info *) dis_info;
170 (*info->fprintf_func) (info->stream, "%ld", value);
174 void fr30_cgen_print_operand
175 PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *,
176 void const *, bfd_vma, int));
178 /* Main entry point for printing operands.
179 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
180 of dis-asm.h on cgen.h.
182 This function is basically just a big switch statement. Earlier versions
183 used tables to look up the function to use, but
184 - if the table contains both assembler and disassembler functions then
185 the disassembler contains much of the assembler and vice-versa,
186 - there's a lot of inlining possibilities as things grow,
187 - using a switch statement avoids the function call overhead.
189 This function could be moved into `print_insn_normal', but keeping it
190 separate makes clear the interface between `print_insn_normal' and each of
194 fr30_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
199 void const *attrs ATTRIBUTE_UNUSED;
203 disassemble_info *info = (disassemble_info *) xinfo;
207 case FR30_OPERAND_CRI :
208 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRi, 0);
210 case FR30_OPERAND_CRJ :
211 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRj, 0);
213 case FR30_OPERAND_R13 :
214 print_keyword (cd, info, & fr30_cgen_opval_h_r13, 0, 0);
216 case FR30_OPERAND_R14 :
217 print_keyword (cd, info, & fr30_cgen_opval_h_r14, 0, 0);
219 case FR30_OPERAND_R15 :
220 print_keyword (cd, info, & fr30_cgen_opval_h_r15, 0, 0);
222 case FR30_OPERAND_RI :
223 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ri, 0);
225 case FR30_OPERAND_RIC :
226 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ric, 0);
228 case FR30_OPERAND_RJ :
229 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rj, 0);
231 case FR30_OPERAND_RJC :
232 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rjc, 0);
234 case FR30_OPERAND_RS1 :
235 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs1, 0);
237 case FR30_OPERAND_RS2 :
238 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs2, 0);
240 case FR30_OPERAND_CC :
241 print_normal (cd, info, fields->f_cc, 0, pc, length);
243 case FR30_OPERAND_CCC :
244 print_normal (cd, info, fields->f_ccc, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
246 case FR30_OPERAND_DIR10 :
247 print_normal (cd, info, fields->f_dir10, 0, pc, length);
249 case FR30_OPERAND_DIR8 :
250 print_normal (cd, info, fields->f_dir8, 0, pc, length);
252 case FR30_OPERAND_DIR9 :
253 print_normal (cd, info, fields->f_dir9, 0, pc, length);
255 case FR30_OPERAND_DISP10 :
256 print_normal (cd, info, fields->f_disp10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
258 case FR30_OPERAND_DISP8 :
259 print_normal (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
261 case FR30_OPERAND_DISP9 :
262 print_normal (cd, info, fields->f_disp9, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
264 case FR30_OPERAND_I20 :
265 print_normal (cd, info, fields->f_i20, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
267 case FR30_OPERAND_I32 :
268 print_normal (cd, info, fields->f_i32, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
270 case FR30_OPERAND_I8 :
271 print_normal (cd, info, fields->f_i8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
273 case FR30_OPERAND_LABEL12 :
274 print_address (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
276 case FR30_OPERAND_LABEL9 :
277 print_address (cd, info, fields->f_rel9, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
279 case FR30_OPERAND_M4 :
280 print_m4 (cd, info, fields->f_m4, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
282 case FR30_OPERAND_PS :
283 print_keyword (cd, info, & fr30_cgen_opval_h_ps, 0, 0);
285 case FR30_OPERAND_REGLIST_HI_LD :
286 print_hi_register_list_ld (cd, info, fields->f_reglist_hi_ld, 0, pc, length);
288 case FR30_OPERAND_REGLIST_HI_ST :
289 print_hi_register_list_st (cd, info, fields->f_reglist_hi_st, 0, pc, length);
291 case FR30_OPERAND_REGLIST_LOW_LD :
292 print_low_register_list_ld (cd, info, fields->f_reglist_low_ld, 0, pc, length);
294 case FR30_OPERAND_REGLIST_LOW_ST :
295 print_low_register_list_st (cd, info, fields->f_reglist_low_st, 0, pc, length);
297 case FR30_OPERAND_S10 :
298 print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
300 case FR30_OPERAND_U10 :
301 print_normal (cd, info, fields->f_u10, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
303 case FR30_OPERAND_U4 :
304 print_normal (cd, info, fields->f_u4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
306 case FR30_OPERAND_U4C :
307 print_normal (cd, info, fields->f_u4c, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
309 case FR30_OPERAND_U8 :
310 print_normal (cd, info, fields->f_u8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
312 case FR30_OPERAND_UDISP6 :
313 print_normal (cd, info, fields->f_udisp6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
317 /* xgettext:c-format */
318 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
324 cgen_print_fn * const fr30_cgen_print_handlers[] =
331 fr30_cgen_init_dis (cd)
334 fr30_cgen_init_opcode_table (cd);
335 fr30_cgen_init_ibld_table (cd);
336 cd->print_handlers = & fr30_cgen_print_handlers[0];
337 cd->print_operand = fr30_cgen_print_operand;
341 /* Default print handler. */
344 print_normal (cd, dis_info, value, attrs, pc, length)
345 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
349 bfd_vma pc ATTRIBUTE_UNUSED;
350 int length ATTRIBUTE_UNUSED;
352 disassemble_info *info = (disassemble_info *) dis_info;
354 #ifdef CGEN_PRINT_NORMAL
355 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
358 /* Print the operand as directed by the attributes. */
359 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
360 ; /* nothing to do */
361 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
362 (*info->fprintf_func) (info->stream, "%ld", value);
364 (*info->fprintf_func) (info->stream, "0x%lx", value);
367 /* Default address handler. */
370 print_address (cd, dis_info, value, attrs, pc, length)
371 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
375 bfd_vma pc ATTRIBUTE_UNUSED;
376 int length ATTRIBUTE_UNUSED;
378 disassemble_info *info = (disassemble_info *) dis_info;
380 #ifdef CGEN_PRINT_ADDRESS
381 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
384 /* Print the operand as directed by the attributes. */
385 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
386 ; /* nothing to do */
387 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
388 (*info->print_address_func) (value, info);
389 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
390 (*info->print_address_func) (value, info);
391 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
392 (*info->fprintf_func) (info->stream, "%ld", (long) value);
394 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
397 /* Keyword print handler. */
400 print_keyword (cd, dis_info, keyword_table, value, attrs)
401 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
403 CGEN_KEYWORD *keyword_table;
405 unsigned int attrs ATTRIBUTE_UNUSED;
407 disassemble_info *info = (disassemble_info *) dis_info;
408 const CGEN_KEYWORD_ENTRY *ke;
410 ke = cgen_keyword_lookup_value (keyword_table, value);
412 (*info->fprintf_func) (info->stream, "%s", ke->name);
414 (*info->fprintf_func) (info->stream, "???");
417 /* Default insn printer.
419 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
420 about disassemble_info. */
423 print_insn_normal (cd, dis_info, insn, fields, pc, length)
426 const CGEN_INSN *insn;
431 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
432 disassemble_info *info = (disassemble_info *) dis_info;
433 const CGEN_SYNTAX_CHAR_TYPE *syn;
435 CGEN_INIT_PRINT (cd);
437 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
439 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
441 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
444 if (CGEN_SYNTAX_CHAR_P (*syn))
446 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
450 /* We have an operand. */
451 fr30_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
452 fields, CGEN_INSN_ATTRS (insn), pc, length);
456 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
458 Returns 0 if all is well, non-zero otherwise. */
461 read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
462 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
464 disassemble_info *info;
467 CGEN_EXTRACT_INFO *ex_info;
468 unsigned long *insn_value;
470 int status = (*info->read_memory_func) (pc, buf, buflen, info);
473 (*info->memory_error_func) (status, pc, info);
477 ex_info->dis_info = info;
478 ex_info->valid = (1 << buflen) - 1;
479 ex_info->insn_bytes = buf;
481 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
485 /* Utility to print an insn.
486 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
487 The result is the size of the insn in bytes or zero for an unknown insn
488 or -1 if an error occurs fetching data (memory_error_func will have
492 print_insn (cd, pc, info, buf, buflen)
495 disassemble_info *info;
499 CGEN_INSN_INT insn_value;
500 const CGEN_INSN_LIST *insn_list;
501 CGEN_EXTRACT_INFO ex_info;
504 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
505 basesize = cd->base_insn_bitsize < buflen * 8 ?
506 cd->base_insn_bitsize : buflen * 8;
507 insn_value = cgen_get_insn_value (cd, buf, basesize);
510 /* Fill in ex_info fields like read_insn would. Don't actually call
511 read_insn, since the incoming buffer is already read (and possibly
512 modified a la m32r). */
513 ex_info.valid = (1 << buflen) - 1;
514 ex_info.dis_info = info;
515 ex_info.insn_bytes = buf;
517 /* The instructions are stored in hash lists.
518 Pick the first one and keep trying until we find the right one. */
520 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
521 while (insn_list != NULL)
523 const CGEN_INSN *insn = insn_list->insn;
526 unsigned long insn_value_cropped;
528 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
529 /* Not needed as insn shouldn't be in hash lists if not supported. */
530 /* Supported by this cpu? */
531 if (! fr30_cgen_insn_supported (cd, insn))
533 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
538 /* Basic bit mask must be correct. */
539 /* ??? May wish to allow target to defer this check until the extract
542 /* Base size may exceed this instruction's size. Extract the
543 relevant part from the buffer. */
544 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
545 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
546 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
547 info->endian == BFD_ENDIAN_BIG);
549 insn_value_cropped = insn_value;
551 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
552 == CGEN_INSN_BASE_VALUE (insn))
554 /* Printing is handled in two passes. The first pass parses the
555 machine insn and extracts the fields. The second pass prints
558 /* Make sure the entire insn is loaded into insn_value, if it
560 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
561 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
563 unsigned long full_insn_value;
564 int rc = read_insn (cd, pc, info, buf,
565 CGEN_INSN_BITSIZE (insn) / 8,
566 & ex_info, & full_insn_value);
569 length = CGEN_EXTRACT_FN (cd, insn)
570 (cd, insn, &ex_info, full_insn_value, &fields, pc);
573 length = CGEN_EXTRACT_FN (cd, insn)
574 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
576 /* length < 0 -> error */
581 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
582 /* length is in bits, result is in bytes */
587 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
593 /* Default value for CGEN_PRINT_INSN.
594 The result is the size of the insn in bytes or zero for an unknown insn
595 or -1 if an error occured fetching bytes. */
597 #ifndef CGEN_PRINT_INSN
598 #define CGEN_PRINT_INSN default_print_insn
602 default_print_insn (cd, pc, info)
605 disassemble_info *info;
607 char buf[CGEN_MAX_INSN_SIZE];
611 /* Attempt to read the base part of the insn. */
612 buflen = cd->base_insn_bitsize / 8;
613 status = (*info->read_memory_func) (pc, buf, buflen, info);
615 /* Try again with the minimum part, if min < base. */
616 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
618 buflen = cd->min_insn_bitsize / 8;
619 status = (*info->read_memory_func) (pc, buf, buflen, info);
624 (*info->memory_error_func) (status, pc, info);
628 return print_insn (cd, pc, info, buf, buflen);
632 Print one instruction from PC on INFO->STREAM.
633 Return the size of the instruction (in bytes). */
635 typedef struct cpu_desc_list {
636 struct cpu_desc_list *next;
644 print_insn_fr30 (pc, info)
646 disassemble_info *info;
648 static cpu_desc_list *cd_list = 0;
649 cpu_desc_list *cl = 0;
650 static CGEN_CPU_DESC cd = 0;
652 static int prev_mach;
653 static int prev_endian;
656 int endian = (info->endian == BFD_ENDIAN_BIG
658 : CGEN_ENDIAN_LITTLE);
659 enum bfd_architecture arch;
661 /* ??? gdb will set mach but leave the architecture as "unknown" */
662 #ifndef CGEN_BFD_ARCH
663 #define CGEN_BFD_ARCH bfd_arch_fr30
666 if (arch == bfd_arch_unknown)
667 arch = CGEN_BFD_ARCH;
669 /* There's no standard way to compute the machine or isa number
670 so we leave it to the target. */
671 #ifdef CGEN_COMPUTE_MACH
672 mach = CGEN_COMPUTE_MACH (info);
677 #ifdef CGEN_COMPUTE_ISA
678 isa = CGEN_COMPUTE_ISA (info);
680 isa = info->insn_sets;
683 /* If we've switched cpu's, try to find a handle we've used before */
687 || endian != prev_endian))
690 for (cl = cd_list; cl; cl = cl->next)
692 if (cl->isa == isa &&
694 cl->endian == endian)
702 /* If we haven't initialized yet, initialize the opcode table. */
705 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
706 const char *mach_name;
710 mach_name = arch_type->printable_name;
714 prev_endian = endian;
715 cd = fr30_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
716 CGEN_CPU_OPEN_BFDMACH, mach_name,
717 CGEN_CPU_OPEN_ENDIAN, prev_endian,
722 /* save this away for future reference */
723 cl = xmalloc (sizeof (struct cpu_desc_list));
731 fr30_cgen_init_dis (cd);
734 /* We try to have as much common code as possible.
735 But at this point some targets need to take over. */
736 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
737 but if not possible try to move this hook elsewhere rather than
739 length = CGEN_PRINT_INSN (cd, pc, info);
745 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
746 return cd->default_insn_bitsize / 8;