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) 1996-2015 Free Software Foundation, Inc.
9 This file is part of libopcodes.
11 This library 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 3, or (at your option)
16 It is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 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 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
34 #include "libiberty.h"
35 #include "m32r-desc.h"
39 /* Default text to print if an instruction isn't recognized. */
40 #define UNKNOWN_INSN_MSG _("*unknown*")
42 static void print_normal
43 (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
44 static void print_address
45 (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
46 static void print_keyword
47 (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
48 static void print_insn_normal
49 (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
51 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
52 static int default_print_insn
53 (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
55 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
58 /* -- disassembler routines inserted here. */
62 /* Print signed operands with '#' prefixes. */
65 print_signed_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
68 unsigned int attrs ATTRIBUTE_UNUSED,
69 bfd_vma pc ATTRIBUTE_UNUSED,
70 int length ATTRIBUTE_UNUSED)
72 disassemble_info *info = (disassemble_info *) dis_info;
74 (*info->fprintf_func) (info->stream, "#");
75 (*info->fprintf_func) (info->stream, "%ld", value);
78 /* Print unsigned operands with '#' prefixes. */
81 print_unsigned_with_hash_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
84 unsigned int attrs ATTRIBUTE_UNUSED,
85 bfd_vma pc ATTRIBUTE_UNUSED,
86 int length ATTRIBUTE_UNUSED)
88 disassemble_info *info = (disassemble_info *) dis_info;
90 (*info->fprintf_func) (info->stream, "#");
91 (*info->fprintf_func) (info->stream, "0x%lx", value);
94 /* Handle '#' prefixes as operands. */
97 print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
99 long value ATTRIBUTE_UNUSED,
100 unsigned int attrs ATTRIBUTE_UNUSED,
101 bfd_vma pc ATTRIBUTE_UNUSED,
102 int length ATTRIBUTE_UNUSED)
104 disassemble_info *info = (disassemble_info *) dis_info;
106 (*info->fprintf_func) (info->stream, "#");
109 #undef CGEN_PRINT_INSN
110 #define CGEN_PRINT_INSN my_print_insn
113 my_print_insn (CGEN_CPU_DESC cd,
115 disassemble_info *info)
117 bfd_byte buffer[CGEN_MAX_INSN_SIZE];
118 bfd_byte *buf = buffer;
120 int buflen = (pc & 3) == 0 ? 4 : 2;
121 int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
124 /* Read the base part of the insn. */
126 status = (*info->read_memory_func) (pc - ((!big_p && (pc & 3) != 0) ? 2 : 0),
130 (*info->memory_error_func) (status, pc, info);
135 x = (big_p ? &buf[0] : &buf[3]);
136 if ((pc & 3) == 0 && (*x & 0x80) != 0)
137 return print_insn (cd, pc, info, buf, buflen);
139 /* Print the first insn. */
142 buf += (big_p ? 0 : 2);
143 if (print_insn (cd, pc, info, buf, 2) == 0)
144 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
145 buf += (big_p ? 2 : -2);
148 x = (big_p ? &buf[0] : &buf[1]);
152 (*info->fprintf_func) (info->stream, " || ");
156 (*info->fprintf_func) (info->stream, " -> ");
158 /* The "& 3" is to pass a consistent address.
159 Parallel insns arguably both begin on the word boundary.
160 Also, branch insns are calculated relative to the word boundary. */
161 if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0)
162 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
164 return (pc & 3) ? 2 : 4;
169 void m32r_cgen_print_operand
170 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
172 /* Main entry point for printing operands.
173 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
174 of dis-asm.h on cgen.h.
176 This function is basically just a big switch statement. Earlier versions
177 used tables to look up the function to use, but
178 - if the table contains both assembler and disassembler functions then
179 the disassembler contains much of the assembler and vice-versa,
180 - there's a lot of inlining possibilities as things grow,
181 - using a switch statement avoids the function call overhead.
183 This function could be moved into `print_insn_normal', but keeping it
184 separate makes clear the interface between `print_insn_normal' and each of
188 m32r_cgen_print_operand (CGEN_CPU_DESC cd,
192 void const *attrs ATTRIBUTE_UNUSED,
196 disassemble_info *info = (disassemble_info *) xinfo;
200 case M32R_OPERAND_ACC :
201 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_acc, 0);
203 case M32R_OPERAND_ACCD :
204 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accd, 0);
206 case M32R_OPERAND_ACCS :
207 print_keyword (cd, info, & m32r_cgen_opval_h_accums, fields->f_accs, 0);
209 case M32R_OPERAND_DCR :
210 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r1, 0);
212 case M32R_OPERAND_DISP16 :
213 print_address (cd, info, fields->f_disp16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
215 case M32R_OPERAND_DISP24 :
216 print_address (cd, info, fields->f_disp24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
218 case M32R_OPERAND_DISP8 :
219 print_address (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
221 case M32R_OPERAND_DR :
222 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
224 case M32R_OPERAND_HASH :
225 print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
227 case M32R_OPERAND_HI16 :
228 print_normal (cd, info, fields->f_hi16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
230 case M32R_OPERAND_IMM1 :
231 print_unsigned_with_hash_prefix (cd, info, fields->f_imm1, 0, pc, length);
233 case M32R_OPERAND_SCR :
234 print_keyword (cd, info, & m32r_cgen_opval_cr_names, fields->f_r2, 0);
236 case M32R_OPERAND_SIMM16 :
237 print_signed_with_hash_prefix (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
239 case M32R_OPERAND_SIMM8 :
240 print_signed_with_hash_prefix (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
242 case M32R_OPERAND_SLO16 :
243 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
245 case M32R_OPERAND_SR :
246 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
248 case M32R_OPERAND_SRC1 :
249 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r1, 0);
251 case M32R_OPERAND_SRC2 :
252 print_keyword (cd, info, & m32r_cgen_opval_gr_names, fields->f_r2, 0);
254 case M32R_OPERAND_UIMM16 :
255 print_unsigned_with_hash_prefix (cd, info, fields->f_uimm16, 0, pc, length);
257 case M32R_OPERAND_UIMM24 :
258 print_address (cd, info, fields->f_uimm24, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
260 case M32R_OPERAND_UIMM3 :
261 print_unsigned_with_hash_prefix (cd, info, fields->f_uimm3, 0, pc, length);
263 case M32R_OPERAND_UIMM4 :
264 print_unsigned_with_hash_prefix (cd, info, fields->f_uimm4, 0, pc, length);
266 case M32R_OPERAND_UIMM5 :
267 print_unsigned_with_hash_prefix (cd, info, fields->f_uimm5, 0, pc, length);
269 case M32R_OPERAND_UIMM8 :
270 print_unsigned_with_hash_prefix (cd, info, fields->f_uimm8, 0, pc, length);
272 case M32R_OPERAND_ULO16 :
273 print_normal (cd, info, fields->f_uimm16, 0, pc, length);
277 /* xgettext:c-format */
278 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
284 cgen_print_fn * const m32r_cgen_print_handlers[] =
291 m32r_cgen_init_dis (CGEN_CPU_DESC cd)
293 m32r_cgen_init_opcode_table (cd);
294 m32r_cgen_init_ibld_table (cd);
295 cd->print_handlers = & m32r_cgen_print_handlers[0];
296 cd->print_operand = m32r_cgen_print_operand;
300 /* Default print handler. */
303 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
307 bfd_vma pc ATTRIBUTE_UNUSED,
308 int length ATTRIBUTE_UNUSED)
310 disassemble_info *info = (disassemble_info *) dis_info;
312 /* Print the operand as directed by the attributes. */
313 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
314 ; /* nothing to do */
315 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
316 (*info->fprintf_func) (info->stream, "%ld", value);
318 (*info->fprintf_func) (info->stream, "0x%lx", value);
321 /* Default address handler. */
324 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
328 bfd_vma pc ATTRIBUTE_UNUSED,
329 int length ATTRIBUTE_UNUSED)
331 disassemble_info *info = (disassemble_info *) dis_info;
333 /* Print the operand as directed by the attributes. */
334 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
335 ; /* Nothing to do. */
336 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
337 (*info->print_address_func) (value, info);
338 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
339 (*info->print_address_func) (value, info);
340 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
341 (*info->fprintf_func) (info->stream, "%ld", (long) value);
343 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
346 /* Keyword print handler. */
349 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
351 CGEN_KEYWORD *keyword_table,
353 unsigned int attrs ATTRIBUTE_UNUSED)
355 disassemble_info *info = (disassemble_info *) dis_info;
356 const CGEN_KEYWORD_ENTRY *ke;
358 ke = cgen_keyword_lookup_value (keyword_table, value);
360 (*info->fprintf_func) (info->stream, "%s", ke->name);
362 (*info->fprintf_func) (info->stream, "???");
365 /* Default insn printer.
367 DIS_INFO is defined as `void *' so the disassembler needn't know anything
368 about disassemble_info. */
371 print_insn_normal (CGEN_CPU_DESC cd,
373 const CGEN_INSN *insn,
378 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
379 disassemble_info *info = (disassemble_info *) dis_info;
380 const CGEN_SYNTAX_CHAR_TYPE *syn;
382 CGEN_INIT_PRINT (cd);
384 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
386 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
388 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
391 if (CGEN_SYNTAX_CHAR_P (*syn))
393 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
397 /* We have an operand. */
398 m32r_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
399 fields, CGEN_INSN_ATTRS (insn), pc, length);
403 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
405 Returns 0 if all is well, non-zero otherwise. */
408 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
410 disassemble_info *info,
413 CGEN_EXTRACT_INFO *ex_info,
414 unsigned long *insn_value)
416 int status = (*info->read_memory_func) (pc, buf, buflen, info);
420 (*info->memory_error_func) (status, pc, info);
424 ex_info->dis_info = info;
425 ex_info->valid = (1 << buflen) - 1;
426 ex_info->insn_bytes = buf;
428 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
432 /* Utility to print an insn.
433 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
434 The result is the size of the insn in bytes or zero for an unknown insn
435 or -1 if an error occurs fetching data (memory_error_func will have
439 print_insn (CGEN_CPU_DESC cd,
441 disassemble_info *info,
445 CGEN_INSN_INT insn_value;
446 const CGEN_INSN_LIST *insn_list;
447 CGEN_EXTRACT_INFO ex_info;
450 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
451 basesize = cd->base_insn_bitsize < buflen * 8 ?
452 cd->base_insn_bitsize : buflen * 8;
453 insn_value = cgen_get_insn_value (cd, buf, basesize);
456 /* Fill in ex_info fields like read_insn would. Don't actually call
457 read_insn, since the incoming buffer is already read (and possibly
458 modified a la m32r). */
459 ex_info.valid = (1 << buflen) - 1;
460 ex_info.dis_info = info;
461 ex_info.insn_bytes = buf;
463 /* The instructions are stored in hash lists.
464 Pick the first one and keep trying until we find the right one. */
466 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
467 while (insn_list != NULL)
469 const CGEN_INSN *insn = insn_list->insn;
472 unsigned long insn_value_cropped;
474 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
475 /* Not needed as insn shouldn't be in hash lists if not supported. */
476 /* Supported by this cpu? */
477 if (! m32r_cgen_insn_supported (cd, insn))
479 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
484 /* Basic bit mask must be correct. */
485 /* ??? May wish to allow target to defer this check until the extract
488 /* Base size may exceed this instruction's size. Extract the
489 relevant part from the buffer. */
490 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
491 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
492 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
493 info->endian == BFD_ENDIAN_BIG);
495 insn_value_cropped = insn_value;
497 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
498 == CGEN_INSN_BASE_VALUE (insn))
500 /* Printing is handled in two passes. The first pass parses the
501 machine insn and extracts the fields. The second pass prints
504 /* Make sure the entire insn is loaded into insn_value, if it
506 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
507 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
509 unsigned long full_insn_value;
510 int rc = read_insn (cd, pc, info, buf,
511 CGEN_INSN_BITSIZE (insn) / 8,
512 & ex_info, & full_insn_value);
515 length = CGEN_EXTRACT_FN (cd, insn)
516 (cd, insn, &ex_info, full_insn_value, &fields, pc);
519 length = CGEN_EXTRACT_FN (cd, insn)
520 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
522 /* Length < 0 -> error. */
527 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
528 /* Length is in bits, result is in bytes. */
533 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
539 /* Default value for CGEN_PRINT_INSN.
540 The result is the size of the insn in bytes or zero for an unknown insn
541 or -1 if an error occured fetching bytes. */
543 #ifndef CGEN_PRINT_INSN
544 #define CGEN_PRINT_INSN default_print_insn
548 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
550 bfd_byte buf[CGEN_MAX_INSN_SIZE];
554 /* Attempt to read the base part of the insn. */
555 buflen = cd->base_insn_bitsize / 8;
556 status = (*info->read_memory_func) (pc, buf, buflen, info);
558 /* Try again with the minimum part, if min < base. */
559 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
561 buflen = cd->min_insn_bitsize / 8;
562 status = (*info->read_memory_func) (pc, buf, buflen, info);
567 (*info->memory_error_func) (status, pc, info);
571 return print_insn (cd, pc, info, buf, buflen);
575 Print one instruction from PC on INFO->STREAM.
576 Return the size of the instruction (in bytes). */
578 typedef struct cpu_desc_list
580 struct cpu_desc_list *next;
588 print_insn_m32r (bfd_vma pc, disassemble_info *info)
590 static cpu_desc_list *cd_list = 0;
591 cpu_desc_list *cl = 0;
592 static CGEN_CPU_DESC cd = 0;
593 static CGEN_BITSET *prev_isa;
594 static int prev_mach;
595 static int prev_endian;
599 int endian = (info->endian == BFD_ENDIAN_BIG
601 : CGEN_ENDIAN_LITTLE);
602 enum bfd_architecture arch;
604 /* ??? gdb will set mach but leave the architecture as "unknown" */
605 #ifndef CGEN_BFD_ARCH
606 #define CGEN_BFD_ARCH bfd_arch_m32r
609 if (arch == bfd_arch_unknown)
610 arch = CGEN_BFD_ARCH;
612 /* There's no standard way to compute the machine or isa number
613 so we leave it to the target. */
614 #ifdef CGEN_COMPUTE_MACH
615 mach = CGEN_COMPUTE_MACH (info);
620 #ifdef CGEN_COMPUTE_ISA
622 static CGEN_BITSET *permanent_isa;
625 permanent_isa = cgen_bitset_create (MAX_ISAS);
627 cgen_bitset_clear (isa);
628 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
631 isa = info->insn_sets;
634 /* If we've switched cpu's, try to find a handle we've used before */
636 && (cgen_bitset_compare (isa, prev_isa) != 0
638 || endian != prev_endian))
641 for (cl = cd_list; cl; cl = cl->next)
643 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
645 cl->endian == endian)
654 /* If we haven't initialized yet, initialize the opcode table. */
657 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
658 const char *mach_name;
662 mach_name = arch_type->printable_name;
664 prev_isa = cgen_bitset_copy (isa);
666 prev_endian = endian;
667 cd = m32r_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
668 CGEN_CPU_OPEN_BFDMACH, mach_name,
669 CGEN_CPU_OPEN_ENDIAN, prev_endian,
674 /* Save this away for future reference. */
675 cl = xmalloc (sizeof (struct cpu_desc_list));
683 m32r_cgen_init_dis (cd);
686 /* We try to have as much common code as possible.
687 But at this point some targets need to take over. */
688 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
689 but if not possible try to move this hook elsewhere rather than
691 length = CGEN_PRINT_INSN (cd, pc, info);
697 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
698 return cd->default_insn_bitsize / 8;