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, 2002, 2003, 2005, 2007,
8 2008, 2010 Free Software Foundation, Inc.
10 This file is part of libopcodes.
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)
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.
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. */
26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
35 #include "libiberty.h"
40 /* Default text to print if an instruction isn't recognized. */
41 #define UNKNOWN_INSN_MSG _("*unknown*")
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);
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;
56 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
59 /* -- disassembler routines inserted here. */
62 static void print_dollarhex (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int);
63 static void print_pcrel (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int);
66 print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
69 unsigned int attrs ATTRIBUTE_UNUSED,
70 bfd_vma pc ATTRIBUTE_UNUSED,
71 int length ATTRIBUTE_UNUSED)
73 disassemble_info *info = (disassemble_info *) dis_info;
75 info->fprintf_func (info->stream, "$%lx", value & 0xffffffff);
78 print_normal (cd, dis_info, value, attrs, pc, length);
82 print_pcrel (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
85 unsigned int attrs ATTRIBUTE_UNUSED,
86 bfd_vma pc ATTRIBUTE_UNUSED,
87 int length ATTRIBUTE_UNUSED)
89 print_address (cd, dis_info, value + pc, attrs, pc, length);
94 void mt_cgen_print_operand
95 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
97 /* Main entry point for printing operands.
98 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
99 of dis-asm.h on cgen.h.
101 This function is basically just a big switch statement. Earlier versions
102 used tables to look up the function to use, but
103 - if the table contains both assembler and disassembler functions then
104 the disassembler contains much of the assembler and vice-versa,
105 - there's a lot of inlining possibilities as things grow,
106 - using a switch statement avoids the function call overhead.
108 This function could be moved into `print_insn_normal', but keeping it
109 separate makes clear the interface between `print_insn_normal' and each of
113 mt_cgen_print_operand (CGEN_CPU_DESC cd,
117 void const *attrs ATTRIBUTE_UNUSED,
121 disassemble_info *info = (disassemble_info *) xinfo;
125 case MT_OPERAND_A23 :
126 print_dollarhex (cd, info, fields->f_a23, 0, pc, length);
128 case MT_OPERAND_BALL :
129 print_dollarhex (cd, info, fields->f_ball, 0, pc, length);
131 case MT_OPERAND_BALL2 :
132 print_dollarhex (cd, info, fields->f_ball2, 0, pc, length);
134 case MT_OPERAND_BANKADDR :
135 print_dollarhex (cd, info, fields->f_bankaddr, 0, pc, length);
137 case MT_OPERAND_BRC :
138 print_dollarhex (cd, info, fields->f_brc, 0, pc, length);
140 case MT_OPERAND_BRC2 :
141 print_dollarhex (cd, info, fields->f_brc2, 0, pc, length);
143 case MT_OPERAND_CB1INCR :
144 print_dollarhex (cd, info, fields->f_cb1incr, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
146 case MT_OPERAND_CB1SEL :
147 print_dollarhex (cd, info, fields->f_cb1sel, 0, pc, length);
149 case MT_OPERAND_CB2INCR :
150 print_dollarhex (cd, info, fields->f_cb2incr, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
152 case MT_OPERAND_CB2SEL :
153 print_dollarhex (cd, info, fields->f_cb2sel, 0, pc, length);
155 case MT_OPERAND_CBRB :
156 print_dollarhex (cd, info, fields->f_cbrb, 0, pc, length);
158 case MT_OPERAND_CBS :
159 print_dollarhex (cd, info, fields->f_cbs, 0, pc, length);
161 case MT_OPERAND_CBX :
162 print_dollarhex (cd, info, fields->f_cbx, 0, pc, length);
164 case MT_OPERAND_CCB :
165 print_dollarhex (cd, info, fields->f_ccb, 0, pc, length);
167 case MT_OPERAND_CDB :
168 print_dollarhex (cd, info, fields->f_cdb, 0, pc, length);
170 case MT_OPERAND_CELL :
171 print_dollarhex (cd, info, fields->f_cell, 0, pc, length);
173 case MT_OPERAND_COLNUM :
174 print_dollarhex (cd, info, fields->f_colnum, 0, pc, length);
176 case MT_OPERAND_CONTNUM :
177 print_dollarhex (cd, info, fields->f_contnum, 0, pc, length);
180 print_dollarhex (cd, info, fields->f_cr, 0, pc, length);
182 case MT_OPERAND_CTXDISP :
183 print_dollarhex (cd, info, fields->f_ctxdisp, 0, pc, length);
185 case MT_OPERAND_DUP :
186 print_dollarhex (cd, info, fields->f_dup, 0, pc, length);
188 case MT_OPERAND_FBDISP :
189 print_dollarhex (cd, info, fields->f_fbdisp, 0, pc, length);
191 case MT_OPERAND_FBINCR :
192 print_dollarhex (cd, info, fields->f_fbincr, 0, pc, length);
194 case MT_OPERAND_FRDR :
195 print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_dr, 0|(1<<CGEN_OPERAND_ABS_ADDR));
197 case MT_OPERAND_FRDRRR :
198 print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_drrr, 0|(1<<CGEN_OPERAND_ABS_ADDR));
200 case MT_OPERAND_FRSR1 :
201 print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_sr1, 0|(1<<CGEN_OPERAND_ABS_ADDR));
203 case MT_OPERAND_FRSR2 :
204 print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_sr2, 0|(1<<CGEN_OPERAND_ABS_ADDR));
207 print_dollarhex (cd, info, fields->f_id, 0, pc, length);
209 case MT_OPERAND_IMM16 :
210 print_dollarhex (cd, info, fields->f_imm16s, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
212 case MT_OPERAND_IMM16L :
213 print_dollarhex (cd, info, fields->f_imm16l, 0, pc, length);
215 case MT_OPERAND_IMM16O :
216 print_pcrel (cd, info, fields->f_imm16s, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
218 case MT_OPERAND_IMM16Z :
219 print_dollarhex (cd, info, fields->f_imm16u, 0, pc, length);
221 case MT_OPERAND_INCAMT :
222 print_dollarhex (cd, info, fields->f_incamt, 0, pc, length);
224 case MT_OPERAND_INCR :
225 print_dollarhex (cd, info, fields->f_incr, 0, pc, length);
227 case MT_OPERAND_LENGTH :
228 print_dollarhex (cd, info, fields->f_length, 0, pc, length);
230 case MT_OPERAND_LOOPSIZE :
231 print_pcrel (cd, info, fields->f_loopo, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
233 case MT_OPERAND_MASK :
234 print_dollarhex (cd, info, fields->f_mask, 0, pc, length);
236 case MT_OPERAND_MASK1 :
237 print_dollarhex (cd, info, fields->f_mask1, 0, pc, length);
239 case MT_OPERAND_MODE :
240 print_dollarhex (cd, info, fields->f_mode, 0, pc, length);
242 case MT_OPERAND_PERM :
243 print_dollarhex (cd, info, fields->f_perm, 0, pc, length);
245 case MT_OPERAND_RBBC :
246 print_dollarhex (cd, info, fields->f_rbbc, 0, pc, length);
249 print_dollarhex (cd, info, fields->f_rc, 0, pc, length);
251 case MT_OPERAND_RC1 :
252 print_dollarhex (cd, info, fields->f_rc1, 0, pc, length);
254 case MT_OPERAND_RC2 :
255 print_dollarhex (cd, info, fields->f_rc2, 0, pc, length);
257 case MT_OPERAND_RC3 :
258 print_dollarhex (cd, info, fields->f_rc3, 0, pc, length);
260 case MT_OPERAND_RCNUM :
261 print_dollarhex (cd, info, fields->f_rcnum, 0, pc, length);
263 case MT_OPERAND_RDA :
264 print_dollarhex (cd, info, fields->f_rda, 0, pc, length);
266 case MT_OPERAND_ROWNUM :
267 print_dollarhex (cd, info, fields->f_rownum, 0, pc, length);
269 case MT_OPERAND_ROWNUM1 :
270 print_dollarhex (cd, info, fields->f_rownum1, 0, pc, length);
272 case MT_OPERAND_ROWNUM2 :
273 print_dollarhex (cd, info, fields->f_rownum2, 0, pc, length);
275 case MT_OPERAND_SIZE :
276 print_dollarhex (cd, info, fields->f_size, 0, pc, length);
278 case MT_OPERAND_TYPE :
279 print_dollarhex (cd, info, fields->f_type, 0, pc, length);
282 print_dollarhex (cd, info, fields->f_wr, 0, pc, length);
284 case MT_OPERAND_XMODE :
285 print_dollarhex (cd, info, fields->f_xmode, 0, pc, length);
289 /* xgettext:c-format */
290 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
296 cgen_print_fn * const mt_cgen_print_handlers[] =
303 mt_cgen_init_dis (CGEN_CPU_DESC cd)
305 mt_cgen_init_opcode_table (cd);
306 mt_cgen_init_ibld_table (cd);
307 cd->print_handlers = & mt_cgen_print_handlers[0];
308 cd->print_operand = mt_cgen_print_operand;
312 /* Default print handler. */
315 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
319 bfd_vma pc ATTRIBUTE_UNUSED,
320 int length ATTRIBUTE_UNUSED)
322 disassemble_info *info = (disassemble_info *) dis_info;
324 /* Print the operand as directed by the attributes. */
325 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
326 ; /* nothing to do */
327 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
328 (*info->fprintf_func) (info->stream, "%ld", value);
330 (*info->fprintf_func) (info->stream, "0x%lx", value);
333 /* Default address handler. */
336 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
340 bfd_vma pc ATTRIBUTE_UNUSED,
341 int length ATTRIBUTE_UNUSED)
343 disassemble_info *info = (disassemble_info *) dis_info;
345 /* Print the operand as directed by the attributes. */
346 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
347 ; /* Nothing to do. */
348 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
349 (*info->print_address_func) (value, info);
350 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
351 (*info->print_address_func) (value, info);
352 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
353 (*info->fprintf_func) (info->stream, "%ld", (long) value);
355 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
358 /* Keyword print handler. */
361 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
363 CGEN_KEYWORD *keyword_table,
365 unsigned int attrs ATTRIBUTE_UNUSED)
367 disassemble_info *info = (disassemble_info *) dis_info;
368 const CGEN_KEYWORD_ENTRY *ke;
370 ke = cgen_keyword_lookup_value (keyword_table, value);
372 (*info->fprintf_func) (info->stream, "%s", ke->name);
374 (*info->fprintf_func) (info->stream, "???");
377 /* Default insn printer.
379 DIS_INFO is defined as `void *' so the disassembler needn't know anything
380 about disassemble_info. */
383 print_insn_normal (CGEN_CPU_DESC cd,
385 const CGEN_INSN *insn,
390 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
391 disassemble_info *info = (disassemble_info *) dis_info;
392 const CGEN_SYNTAX_CHAR_TYPE *syn;
394 CGEN_INIT_PRINT (cd);
396 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
398 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
400 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
403 if (CGEN_SYNTAX_CHAR_P (*syn))
405 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
409 /* We have an operand. */
410 mt_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
411 fields, CGEN_INSN_ATTRS (insn), pc, length);
415 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
417 Returns 0 if all is well, non-zero otherwise. */
420 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
422 disassemble_info *info,
425 CGEN_EXTRACT_INFO *ex_info,
426 unsigned long *insn_value)
428 int status = (*info->read_memory_func) (pc, buf, buflen, info);
432 (*info->memory_error_func) (status, pc, info);
436 ex_info->dis_info = info;
437 ex_info->valid = (1 << buflen) - 1;
438 ex_info->insn_bytes = buf;
440 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
444 /* Utility to print an insn.
445 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
446 The result is the size of the insn in bytes or zero for an unknown insn
447 or -1 if an error occurs fetching data (memory_error_func will have
451 print_insn (CGEN_CPU_DESC cd,
453 disassemble_info *info,
457 CGEN_INSN_INT insn_value;
458 const CGEN_INSN_LIST *insn_list;
459 CGEN_EXTRACT_INFO ex_info;
462 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
463 basesize = cd->base_insn_bitsize < buflen * 8 ?
464 cd->base_insn_bitsize : buflen * 8;
465 insn_value = cgen_get_insn_value (cd, buf, basesize);
468 /* Fill in ex_info fields like read_insn would. Don't actually call
469 read_insn, since the incoming buffer is already read (and possibly
470 modified a la m32r). */
471 ex_info.valid = (1 << buflen) - 1;
472 ex_info.dis_info = info;
473 ex_info.insn_bytes = buf;
475 /* The instructions are stored in hash lists.
476 Pick the first one and keep trying until we find the right one. */
478 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
479 while (insn_list != NULL)
481 const CGEN_INSN *insn = insn_list->insn;
484 unsigned long insn_value_cropped;
486 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
487 /* Not needed as insn shouldn't be in hash lists if not supported. */
488 /* Supported by this cpu? */
489 if (! mt_cgen_insn_supported (cd, insn))
491 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
496 /* Basic bit mask must be correct. */
497 /* ??? May wish to allow target to defer this check until the extract
500 /* Base size may exceed this instruction's size. Extract the
501 relevant part from the buffer. */
502 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
503 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
504 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
505 info->endian == BFD_ENDIAN_BIG);
507 insn_value_cropped = insn_value;
509 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
510 == CGEN_INSN_BASE_VALUE (insn))
512 /* Printing is handled in two passes. The first pass parses the
513 machine insn and extracts the fields. The second pass prints
516 /* Make sure the entire insn is loaded into insn_value, if it
518 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
519 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
521 unsigned long full_insn_value;
522 int rc = read_insn (cd, pc, info, buf,
523 CGEN_INSN_BITSIZE (insn) / 8,
524 & ex_info, & full_insn_value);
527 length = CGEN_EXTRACT_FN (cd, insn)
528 (cd, insn, &ex_info, full_insn_value, &fields, pc);
531 length = CGEN_EXTRACT_FN (cd, insn)
532 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
534 /* Length < 0 -> error. */
539 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
540 /* Length is in bits, result is in bytes. */
545 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
551 /* Default value for CGEN_PRINT_INSN.
552 The result is the size of the insn in bytes or zero for an unknown insn
553 or -1 if an error occured fetching bytes. */
555 #ifndef CGEN_PRINT_INSN
556 #define CGEN_PRINT_INSN default_print_insn
560 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
562 bfd_byte buf[CGEN_MAX_INSN_SIZE];
566 /* Attempt to read the base part of the insn. */
567 buflen = cd->base_insn_bitsize / 8;
568 status = (*info->read_memory_func) (pc, buf, buflen, info);
570 /* Try again with the minimum part, if min < base. */
571 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
573 buflen = cd->min_insn_bitsize / 8;
574 status = (*info->read_memory_func) (pc, buf, buflen, info);
579 (*info->memory_error_func) (status, pc, info);
583 return print_insn (cd, pc, info, buf, buflen);
587 Print one instruction from PC on INFO->STREAM.
588 Return the size of the instruction (in bytes). */
590 typedef struct cpu_desc_list
592 struct cpu_desc_list *next;
600 print_insn_mt (bfd_vma pc, disassemble_info *info)
602 static cpu_desc_list *cd_list = 0;
603 cpu_desc_list *cl = 0;
604 static CGEN_CPU_DESC cd = 0;
605 static CGEN_BITSET *prev_isa;
606 static int prev_mach;
607 static int prev_endian;
611 int endian = (info->endian == BFD_ENDIAN_BIG
613 : CGEN_ENDIAN_LITTLE);
614 enum bfd_architecture arch;
616 /* ??? gdb will set mach but leave the architecture as "unknown" */
617 #ifndef CGEN_BFD_ARCH
618 #define CGEN_BFD_ARCH bfd_arch_mt
621 if (arch == bfd_arch_unknown)
622 arch = CGEN_BFD_ARCH;
624 /* There's no standard way to compute the machine or isa number
625 so we leave it to the target. */
626 #ifdef CGEN_COMPUTE_MACH
627 mach = CGEN_COMPUTE_MACH (info);
632 #ifdef CGEN_COMPUTE_ISA
634 static CGEN_BITSET *permanent_isa;
637 permanent_isa = cgen_bitset_create (MAX_ISAS);
639 cgen_bitset_clear (isa);
640 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
643 isa = info->insn_sets;
646 /* If we've switched cpu's, try to find a handle we've used before */
648 && (cgen_bitset_compare (isa, prev_isa) != 0
650 || endian != prev_endian))
653 for (cl = cd_list; cl; cl = cl->next)
655 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
657 cl->endian == endian)
666 /* If we haven't initialized yet, initialize the opcode table. */
669 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
670 const char *mach_name;
674 mach_name = arch_type->printable_name;
676 prev_isa = cgen_bitset_copy (isa);
678 prev_endian = endian;
679 cd = mt_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
680 CGEN_CPU_OPEN_BFDMACH, mach_name,
681 CGEN_CPU_OPEN_ENDIAN, prev_endian,
686 /* Save this away for future reference. */
687 cl = xmalloc (sizeof (struct cpu_desc_list));
695 mt_cgen_init_dis (cd);
698 /* We try to have as much common code as possible.
699 But at this point some targets need to take over. */
700 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
701 but if not possible try to move this hook elsewhere rather than
703 length = CGEN_PRINT_INSN (cd, pc, info);
709 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
710 return cd->default_insn_bitsize / 8;