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 "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 *,
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 */
60 print_register_list (dis_info, value, offset, load_store)
64 int load_store; /* 0 == load, 1 == store */
66 disassemble_info *info = dis_info;
78 (*info->fprintf_func) (info->stream, "r%i", index + offset);
82 for (index = 1; index <= 7; ++index)
91 (*info->fprintf_func) (info->stream, "%sr%i", comma, index + offset);
98 print_hi_register_list_ld (cd, dis_info, value, attrs, pc, length)
106 print_register_list (dis_info, value, 8, 0/*load*/);
110 print_low_register_list_ld (cd, dis_info, value, attrs, pc, length)
118 print_register_list (dis_info, value, 0, 0/*load*/);
122 print_hi_register_list_st (cd, dis_info, value, attrs, pc, length)
130 print_register_list (dis_info, value, 8, 1/*store*/);
134 print_low_register_list_st (cd, dis_info, value, attrs, pc, length)
142 print_register_list (dis_info, value, 0, 1/*store*/);
146 print_m4 (cd, dis_info, value, attrs, pc, length)
154 disassemble_info *info = (disassemble_info *) dis_info;
155 (*info->fprintf_func) (info->stream, "%ld", value);
159 /* Main entry point for printing operands.
160 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
161 of dis-asm.h on cgen.h.
163 This function is basically just a big switch statement. Earlier versions
164 used tables to look up the function to use, but
165 - if the table contains both assembler and disassembler functions then
166 the disassembler contains much of the assembler and vice-versa,
167 - there's a lot of inlining possibilities as things grow,
168 - using a switch statement avoids the function call overhead.
170 This function could be moved into `print_insn_normal', but keeping it
171 separate makes clear the interface between `print_insn_normal' and each of
176 fr30_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
185 disassemble_info *info = (disassemble_info *) xinfo;
189 case FR30_OPERAND_CRI :
190 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRi, 0);
192 case FR30_OPERAND_CRJ :
193 print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRj, 0);
195 case FR30_OPERAND_R13 :
196 print_keyword (cd, info, & fr30_cgen_opval_h_r13, fields->f_nil, 0);
198 case FR30_OPERAND_R14 :
199 print_keyword (cd, info, & fr30_cgen_opval_h_r14, fields->f_nil, 0);
201 case FR30_OPERAND_R15 :
202 print_keyword (cd, info, & fr30_cgen_opval_h_r15, fields->f_nil, 0);
204 case FR30_OPERAND_RI :
205 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ri, 0);
207 case FR30_OPERAND_RIC :
208 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ric, 0);
210 case FR30_OPERAND_RJ :
211 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rj, 0);
213 case FR30_OPERAND_RJC :
214 print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rjc, 0);
216 case FR30_OPERAND_RS1 :
217 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs1, 0);
219 case FR30_OPERAND_RS2 :
220 print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs2, 0);
222 case FR30_OPERAND_CC :
223 print_normal (cd, info, fields->f_cc, 0, pc, length);
225 case FR30_OPERAND_CCC :
226 print_normal (cd, info, fields->f_ccc, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
228 case FR30_OPERAND_DIR10 :
229 print_normal (cd, info, fields->f_dir10, 0, pc, length);
231 case FR30_OPERAND_DIR8 :
232 print_normal (cd, info, fields->f_dir8, 0, pc, length);
234 case FR30_OPERAND_DIR9 :
235 print_normal (cd, info, fields->f_dir9, 0, pc, length);
237 case FR30_OPERAND_DISP10 :
238 print_normal (cd, info, fields->f_disp10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
240 case FR30_OPERAND_DISP8 :
241 print_normal (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
243 case FR30_OPERAND_DISP9 :
244 print_normal (cd, info, fields->f_disp9, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
246 case FR30_OPERAND_I20 :
247 print_normal (cd, info, fields->f_i20, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
249 case FR30_OPERAND_I32 :
250 print_normal (cd, info, fields->f_i32, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
252 case FR30_OPERAND_I8 :
253 print_normal (cd, info, fields->f_i8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
255 case FR30_OPERAND_LABEL12 :
256 print_address (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
258 case FR30_OPERAND_LABEL9 :
259 print_address (cd, info, fields->f_rel9, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
261 case FR30_OPERAND_M4 :
262 print_m4 (cd, info, fields->f_m4, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
264 case FR30_OPERAND_PS :
265 print_keyword (cd, info, & fr30_cgen_opval_h_ps, fields->f_nil, 0);
267 case FR30_OPERAND_REGLIST_HI_LD :
268 print_hi_register_list_ld (cd, info, fields->f_reglist_hi_ld, 0, pc, length);
270 case FR30_OPERAND_REGLIST_HI_ST :
271 print_hi_register_list_st (cd, info, fields->f_reglist_hi_st, 0, pc, length);
273 case FR30_OPERAND_REGLIST_LOW_LD :
274 print_low_register_list_ld (cd, info, fields->f_reglist_low_ld, 0, pc, length);
276 case FR30_OPERAND_REGLIST_LOW_ST :
277 print_low_register_list_st (cd, info, fields->f_reglist_low_st, 0, pc, length);
279 case FR30_OPERAND_S10 :
280 print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
282 case FR30_OPERAND_U10 :
283 print_normal (cd, info, fields->f_u10, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
285 case FR30_OPERAND_U4 :
286 print_normal (cd, info, fields->f_u4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
288 case FR30_OPERAND_U4C :
289 print_normal (cd, info, fields->f_u4c, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
291 case FR30_OPERAND_U8 :
292 print_normal (cd, info, fields->f_u8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
294 case FR30_OPERAND_UDISP6 :
295 print_normal (cd, info, fields->f_udisp6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
299 /* xgettext:c-format */
300 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
306 cgen_print_fn * const fr30_cgen_print_handlers[] =
313 fr30_cgen_init_dis (cd)
316 fr30_cgen_init_opcode_table (cd);
317 fr30_cgen_init_ibld_table (cd);
318 cd->print_handlers = & fr30_cgen_print_handlers[0];
319 cd->print_operand = fr30_cgen_print_operand;
323 /* Default print handler. */
326 print_normal (cd, dis_info, value, attrs, pc, length)
334 disassemble_info *info = (disassemble_info *) dis_info;
336 #ifdef CGEN_PRINT_NORMAL
337 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
340 /* Print the operand as directed by the attributes. */
341 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
342 ; /* nothing to do */
343 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
344 (*info->fprintf_func) (info->stream, "%ld", value);
346 (*info->fprintf_func) (info->stream, "0x%lx", value);
349 /* Default address handler. */
352 print_address (cd, dis_info, value, attrs, pc, length)
360 disassemble_info *info = (disassemble_info *) dis_info;
362 #ifdef CGEN_PRINT_ADDRESS
363 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
366 /* Print the operand as directed by the attributes. */
367 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
368 ; /* nothing to do */
369 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
370 (*info->print_address_func) (value, info);
371 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
372 (*info->print_address_func) (value, info);
373 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
374 (*info->fprintf_func) (info->stream, "%ld", (long) value);
376 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
379 /* Keyword print handler. */
382 print_keyword (cd, dis_info, keyword_table, value, attrs)
385 CGEN_KEYWORD *keyword_table;
389 disassemble_info *info = (disassemble_info *) dis_info;
390 const CGEN_KEYWORD_ENTRY *ke;
392 ke = cgen_keyword_lookup_value (keyword_table, value);
394 (*info->fprintf_func) (info->stream, "%s", ke->name);
396 (*info->fprintf_func) (info->stream, "???");
399 /* Default insn printer.
401 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
402 about disassemble_info. */
405 print_insn_normal (cd, dis_info, insn, fields, pc, length)
408 const CGEN_INSN *insn;
413 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
414 disassemble_info *info = (disassemble_info *) dis_info;
415 const unsigned char *syn;
417 CGEN_INIT_PRINT (cd);
419 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
421 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
423 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
426 if (CGEN_SYNTAX_CHAR_P (*syn))
428 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
432 /* We have an operand. */
433 fr30_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
434 fields, CGEN_INSN_ATTRS (insn), pc, length);
438 /* Utility to print an insn.
439 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
440 The result is the size of the insn in bytes or zero for an unknown insn
441 or -1 if an error occurs fetching data (memory_error_func will have
445 print_insn (cd, pc, info, buf, buflen)
448 disassemble_info *info;
452 unsigned long insn_value;
453 const CGEN_INSN_LIST *insn_list;
454 CGEN_EXTRACT_INFO ex_info;
456 ex_info.dis_info = info;
457 ex_info.valid = (1 << (cd->base_insn_bitsize / 8)) - 1;
458 ex_info.insn_bytes = buf;
466 insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb16 (buf) : bfd_getl16 (buf);
469 insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb32 (buf) : bfd_getl32 (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, buf, insn_value);
479 while (insn_list != NULL)
481 const CGEN_INSN *insn = insn_list->insn;
485 #if 0 /* not needed as insn shouldn't be in hash lists if not supported */
486 /* Supported by this cpu? */
487 if (! fr30_cgen_insn_supported (cd, insn))
491 /* Basic bit mask must be correct. */
492 /* ??? May wish to allow target to defer this check until the extract
494 if ((insn_value & CGEN_INSN_BASE_MASK (insn))
495 == CGEN_INSN_BASE_VALUE (insn))
497 /* Printing is handled in two passes. The first pass parses the
498 machine insn and extracts the fields. The second pass prints
501 length = CGEN_EXTRACT_FN (cd, insn)
502 (cd, insn, &ex_info, insn_value, &fields, pc);
503 /* length < 0 -> error */
508 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
509 /* length is in bits, result is in bytes */
514 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
520 /* Default value for CGEN_PRINT_INSN.
521 The result is the size of the insn in bytes or zero for an unknown insn
522 or -1 if an error occured fetching bytes. */
524 #ifndef CGEN_PRINT_INSN
525 #define CGEN_PRINT_INSN default_print_insn
529 default_print_insn (cd, pc, info)
532 disassemble_info *info;
534 char buf[CGEN_MAX_INSN_SIZE];
537 /* Read the base part of the insn. */
539 status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info);
542 (*info->memory_error_func) (status, pc, info);
546 return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8);
550 Print one instruction from PC on INFO->STREAM.
551 Return the size of the instruction (in bytes). */
554 print_insn_fr30 (pc, info)
556 disassemble_info *info;
558 static CGEN_CPU_DESC cd = 0;
559 static prev_isa,prev_mach,prev_endian;
562 int endian = (info->endian == BFD_ENDIAN_BIG
564 : CGEN_ENDIAN_LITTLE);
565 enum bfd_architecture arch;
567 /* ??? gdb will set mach but leave the architecture as "unknown" */
568 #ifndef CGEN_BFD_ARCH
569 #define CGEN_BFD_ARCH bfd_arch_fr30
572 if (arch == bfd_arch_unknown)
573 arch = CGEN_BFD_ARCH;
575 /* There's no standard way to compute the isa number (e.g. for arm thumb)
576 so we leave it to the target. */
577 #ifdef CGEN_COMPUTE_ISA
578 isa = CGEN_COMPUTE_ISA (info);
585 /* If we've switched cpu's, close the current table and open a new one. */
589 || endian != prev_endian))
591 fr30_cgen_cpu_close (cd);
595 /* If we haven't initialized yet, initialize the opcode table. */
598 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
599 const char *mach_name;
603 mach_name = arch_type->printable_name;
607 prev_endian = endian;
608 cd = fr30_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
609 CGEN_CPU_OPEN_BFDMACH, mach_name,
610 CGEN_CPU_OPEN_ENDIAN, prev_endian,
614 fr30_cgen_init_dis (cd);
617 /* We try to have as much common code as possible.
618 But at this point some targets need to take over. */
619 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
620 but if not possible try to move this hook elsewhere rather than
622 length = CGEN_PRINT_INSN (cd, pc, info);
628 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
629 return cd->default_insn_bitsize / 8;