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
8 Free Software Foundation, Inc.
10 This file is part of the GNU Binutils and GDB, the GNU debugger.
12 This program 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 2, or (at your option)
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public 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 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
35 #include "libiberty.h"
36 #include "ip2k-desc.h"
40 /* Default text to print if an instruction isn't recognized. */
41 #define UNKNOWN_INSN_MSG _("*unknown*")
43 static void print_normal
44 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int));
45 static void print_address
46 PARAMS ((CGEN_CPU_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int));
47 static void print_keyword
48 PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int));
49 static void print_insn_normal
50 PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
53 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned));
54 static int default_print_insn
55 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
57 PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int,
58 CGEN_EXTRACT_INFO *, unsigned long *));
60 /* -- disassembler routines inserted here */
64 #define PRINT_FUNC_DECL(name) \
65 static void name PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int))
67 PRINT_FUNC_DECL (print_fr);
68 PRINT_FUNC_DECL (print_dollarhex);
69 PRINT_FUNC_DECL (print_dollarhex8);
70 PRINT_FUNC_DECL (print_dollarhex16);
71 PRINT_FUNC_DECL (print_dollarhex_addr16h);
72 PRINT_FUNC_DECL (print_dollarhex_addr16l);
73 PRINT_FUNC_DECL (print_dollarhex_p);
74 PRINT_FUNC_DECL (print_dollarhex_cj);
75 PRINT_FUNC_DECL (print_decimal);
78 print_fr (cd, dis_info, value, attrs, pc, length)
79 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
82 unsigned int attrs ATTRIBUTE_UNUSED;
83 bfd_vma pc ATTRIBUTE_UNUSED;
84 int length ATTRIBUTE_UNUSED;
86 disassemble_info *info = (disassemble_info *) dis_info;
87 const CGEN_KEYWORD_ENTRY *ke;
88 extern CGEN_KEYWORD ip2k_cgen_opval_register_names;
92 if ( value == 0 ) /* This is (IP) */
94 (*info->fprintf_func) (info->stream, "%s", "(IP)");
98 offsettest = value >> 7;
99 offsetvalue = value & 0x7F;
101 /* Check to see if first two bits are 10 -> (DP) */
102 if ( offsettest == 2 )
104 if ( offsetvalue == 0 )
105 (*info->fprintf_func) (info->stream, "%s","(DP)");
107 (*info->fprintf_func) (info->stream, "$%x%s",offsetvalue, "(DP)");
111 /* Check to see if first two bits are 11 -> (SP) */
112 if ( offsettest == 3 )
114 if ( offsetvalue == 0 )
115 (*info->fprintf_func) (info->stream, "%s", "(SP)");
117 (*info->fprintf_func) (info->stream, "$%x%s", offsetvalue,"(SP)");
121 /* Attempt to print as a register keyword. */
122 ke = cgen_keyword_lookup_value (& ip2k_cgen_opval_register_names, value);
125 (*info->fprintf_func) (info->stream, "%s", ke->name);
129 /* Print as an address literal. */
130 (*info->fprintf_func) (info->stream, "$%02x", value);
134 print_dollarhex (cd, dis_info, value, attrs, pc, length)
135 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
138 unsigned int attrs ATTRIBUTE_UNUSED;
139 bfd_vma pc ATTRIBUTE_UNUSED;
140 int length ATTRIBUTE_UNUSED;
142 disassemble_info *info = (disassemble_info *) dis_info;
144 (*info->fprintf_func) (info->stream, "$%x", value);
148 print_dollarhex8 (cd, dis_info, value, attrs, pc, length)
149 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
152 unsigned int attrs ATTRIBUTE_UNUSED;
153 bfd_vma pc ATTRIBUTE_UNUSED;
154 int length ATTRIBUTE_UNUSED;
156 disassemble_info *info = (disassemble_info *) dis_info;
158 (*info->fprintf_func) (info->stream, "$%02x", value);
162 print_dollarhex16 (cd, dis_info, value, attrs, pc, length)
163 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
166 unsigned int attrs ATTRIBUTE_UNUSED;
167 bfd_vma pc ATTRIBUTE_UNUSED;
168 int length ATTRIBUTE_UNUSED;
170 disassemble_info *info = (disassemble_info *) dis_info;
172 (*info->fprintf_func) (info->stream, "$%04x", value);
176 print_dollarhex_addr16h (cd, dis_info, value, attrs, pc, length)
177 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
180 unsigned int attrs ATTRIBUTE_UNUSED;
181 bfd_vma pc ATTRIBUTE_UNUSED;
182 int length ATTRIBUTE_UNUSED;
184 disassemble_info *info = (disassemble_info *) dis_info;
186 /* This is a loadh instruction. Shift the value to the left */
187 /* by 8 bits so that disassembled code will reassemble properly. */
188 value = ((value << 8) & 0xFF00);
190 (*info->fprintf_func) (info->stream, "$%04x", value);
194 print_dollarhex_addr16l (cd, dis_info, value, attrs, pc, length)
195 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
198 unsigned int attrs ATTRIBUTE_UNUSED;
199 bfd_vma pc ATTRIBUTE_UNUSED;
200 int length ATTRIBUTE_UNUSED;
202 disassemble_info *info = (disassemble_info *) dis_info;
204 (*info->fprintf_func) (info->stream, "$%04x", value);
208 print_dollarhex_p (cd, dis_info, value, attrs, pc, length)
209 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
212 unsigned int attrs ATTRIBUTE_UNUSED;
213 bfd_vma pc ATTRIBUTE_UNUSED;
214 int length ATTRIBUTE_UNUSED;
216 disassemble_info *info = (disassemble_info *) dis_info;
218 value = ((value << 14) & 0x1C000);
219 ;value = (value & 0x1FFFF);
220 (*info->fprintf_func) (info->stream, "$%05x", value);
224 print_dollarhex_cj (cd, dis_info, value, attrs, pc, length)
225 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
228 unsigned int attrs ATTRIBUTE_UNUSED;
229 bfd_vma pc ATTRIBUTE_UNUSED;
230 int length ATTRIBUTE_UNUSED;
232 disassemble_info *info = (disassemble_info *) dis_info;
234 value = ((value << 1) & 0x1FFFF);
235 (*info->fprintf_func) (info->stream, "$%05x", value);
240 print_decimal (cd, dis_info, value, attrs, pc, length)
241 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
244 unsigned int attrs ATTRIBUTE_UNUSED;
245 bfd_vma pc ATTRIBUTE_UNUSED;
246 int length ATTRIBUTE_UNUSED;
248 disassemble_info *info = (disassemble_info *) dis_info;
250 (*info->fprintf_func) (info->stream, "%d", value);
257 void ip2k_cgen_print_operand
258 PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *,
259 void const *, bfd_vma, int));
261 /* Main entry point for printing operands.
262 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
263 of dis-asm.h on cgen.h.
265 This function is basically just a big switch statement. Earlier versions
266 used tables to look up the function to use, but
267 - if the table contains both assembler and disassembler functions then
268 the disassembler contains much of the assembler and vice-versa,
269 - there's a lot of inlining possibilities as things grow,
270 - using a switch statement avoids the function call overhead.
272 This function could be moved into `print_insn_normal', but keeping it
273 separate makes clear the interface between `print_insn_normal' and each of
277 ip2k_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
282 void const *attrs ATTRIBUTE_UNUSED;
286 disassemble_info *info = (disassemble_info *) xinfo;
290 case IP2K_OPERAND_ADDR16CJP :
291 print_dollarhex_cj (cd, info, fields->f_addr16cjp, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
293 case IP2K_OPERAND_ADDR16H :
294 print_dollarhex_addr16h (cd, info, fields->f_imm8, 0, pc, length);
296 case IP2K_OPERAND_ADDR16L :
297 print_dollarhex_addr16l (cd, info, fields->f_imm8, 0, pc, length);
299 case IP2K_OPERAND_ADDR16P :
300 print_dollarhex_p (cd, info, fields->f_page3, 0, pc, length);
302 case IP2K_OPERAND_BITNO :
303 print_decimal (cd, info, fields->f_bitno, 0, pc, length);
305 case IP2K_OPERAND_CBIT :
306 print_normal (cd, info, 0, 0, pc, length);
308 case IP2K_OPERAND_DCBIT :
309 print_normal (cd, info, 0, 0, pc, length);
311 case IP2K_OPERAND_FR :
312 print_fr (cd, info, fields->f_reg, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
314 case IP2K_OPERAND_LIT8 :
315 print_dollarhex8 (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
317 case IP2K_OPERAND_PABITS :
318 print_normal (cd, info, 0, 0, pc, length);
320 case IP2K_OPERAND_RETI3 :
321 print_dollarhex (cd, info, fields->f_reti3, 0, pc, length);
323 case IP2K_OPERAND_ZBIT :
324 print_normal (cd, info, 0, 0, pc, length);
328 /* xgettext:c-format */
329 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
335 cgen_print_fn * const ip2k_cgen_print_handlers[] =
342 ip2k_cgen_init_dis (cd)
345 ip2k_cgen_init_opcode_table (cd);
346 ip2k_cgen_init_ibld_table (cd);
347 cd->print_handlers = & ip2k_cgen_print_handlers[0];
348 cd->print_operand = ip2k_cgen_print_operand;
352 /* Default print handler. */
355 print_normal (cd, dis_info, value, attrs, pc, length)
356 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
360 bfd_vma pc ATTRIBUTE_UNUSED;
361 int length ATTRIBUTE_UNUSED;
363 disassemble_info *info = (disassemble_info *) dis_info;
365 #ifdef CGEN_PRINT_NORMAL
366 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
369 /* Print the operand as directed by the attributes. */
370 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
371 ; /* nothing to do */
372 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
373 (*info->fprintf_func) (info->stream, "%ld", value);
375 (*info->fprintf_func) (info->stream, "0x%lx", value);
378 /* Default address handler. */
381 print_address (cd, dis_info, value, attrs, pc, length)
382 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
386 bfd_vma pc ATTRIBUTE_UNUSED;
387 int length ATTRIBUTE_UNUSED;
389 disassemble_info *info = (disassemble_info *) dis_info;
391 #ifdef CGEN_PRINT_ADDRESS
392 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
395 /* Print the operand as directed by the attributes. */
396 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
397 ; /* nothing to do */
398 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
399 (*info->print_address_func) (value, info);
400 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
401 (*info->print_address_func) (value, info);
402 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
403 (*info->fprintf_func) (info->stream, "%ld", (long) value);
405 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
408 /* Keyword print handler. */
411 print_keyword (cd, dis_info, keyword_table, value, attrs)
412 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
414 CGEN_KEYWORD *keyword_table;
416 unsigned int attrs ATTRIBUTE_UNUSED;
418 disassemble_info *info = (disassemble_info *) dis_info;
419 const CGEN_KEYWORD_ENTRY *ke;
421 ke = cgen_keyword_lookup_value (keyword_table, value);
423 (*info->fprintf_func) (info->stream, "%s", ke->name);
425 (*info->fprintf_func) (info->stream, "???");
428 /* Default insn printer.
430 DIS_INFO is defined as `PTR' so the disassembler needn't know anything
431 about disassemble_info. */
434 print_insn_normal (cd, dis_info, insn, fields, pc, length)
437 const CGEN_INSN *insn;
442 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
443 disassemble_info *info = (disassemble_info *) dis_info;
444 const CGEN_SYNTAX_CHAR_TYPE *syn;
446 CGEN_INIT_PRINT (cd);
448 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
450 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
452 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
455 if (CGEN_SYNTAX_CHAR_P (*syn))
457 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
461 /* We have an operand. */
462 ip2k_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
463 fields, CGEN_INSN_ATTRS (insn), pc, length);
467 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
469 Returns 0 if all is well, non-zero otherwise. */
472 read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
473 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
475 disassemble_info *info;
478 CGEN_EXTRACT_INFO *ex_info;
479 unsigned long *insn_value;
481 int status = (*info->read_memory_func) (pc, buf, buflen, info);
484 (*info->memory_error_func) (status, pc, info);
488 ex_info->dis_info = info;
489 ex_info->valid = (1 << buflen) - 1;
490 ex_info->insn_bytes = buf;
492 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
496 /* Utility to print an insn.
497 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
498 The result is the size of the insn in bytes or zero for an unknown insn
499 or -1 if an error occurs fetching data (memory_error_func will have
503 print_insn (cd, pc, info, buf, buflen)
506 disassemble_info *info;
510 CGEN_INSN_INT insn_value;
511 const CGEN_INSN_LIST *insn_list;
512 CGEN_EXTRACT_INFO ex_info;
515 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
516 basesize = cd->base_insn_bitsize < buflen * 8 ?
517 cd->base_insn_bitsize : buflen * 8;
518 insn_value = cgen_get_insn_value (cd, buf, basesize);
521 /* Fill in ex_info fields like read_insn would. Don't actually call
522 read_insn, since the incoming buffer is already read (and possibly
523 modified a la m32r). */
524 ex_info.valid = (1 << buflen) - 1;
525 ex_info.dis_info = info;
526 ex_info.insn_bytes = buf;
528 /* The instructions are stored in hash lists.
529 Pick the first one and keep trying until we find the right one. */
531 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
532 while (insn_list != NULL)
534 const CGEN_INSN *insn = insn_list->insn;
537 unsigned long insn_value_cropped;
539 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
540 /* Not needed as insn shouldn't be in hash lists if not supported. */
541 /* Supported by this cpu? */
542 if (! ip2k_cgen_insn_supported (cd, insn))
544 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
549 /* Basic bit mask must be correct. */
550 /* ??? May wish to allow target to defer this check until the extract
553 /* Base size may exceed this instruction's size. Extract the
554 relevant part from the buffer. */
555 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
556 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
557 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
558 info->endian == BFD_ENDIAN_BIG);
560 insn_value_cropped = insn_value;
562 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
563 == CGEN_INSN_BASE_VALUE (insn))
565 /* Printing is handled in two passes. The first pass parses the
566 machine insn and extracts the fields. The second pass prints
569 /* Make sure the entire insn is loaded into insn_value, if it
571 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
572 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
574 unsigned long full_insn_value;
575 int rc = read_insn (cd, pc, info, buf,
576 CGEN_INSN_BITSIZE (insn) / 8,
577 & ex_info, & full_insn_value);
580 length = CGEN_EXTRACT_FN (cd, insn)
581 (cd, insn, &ex_info, full_insn_value, &fields, pc);
584 length = CGEN_EXTRACT_FN (cd, insn)
585 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
587 /* length < 0 -> error */
592 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
593 /* length is in bits, result is in bytes */
598 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
604 /* Default value for CGEN_PRINT_INSN.
605 The result is the size of the insn in bytes or zero for an unknown insn
606 or -1 if an error occured fetching bytes. */
608 #ifndef CGEN_PRINT_INSN
609 #define CGEN_PRINT_INSN default_print_insn
613 default_print_insn (cd, pc, info)
616 disassemble_info *info;
618 char buf[CGEN_MAX_INSN_SIZE];
622 /* Attempt to read the base part of the insn. */
623 buflen = cd->base_insn_bitsize / 8;
624 status = (*info->read_memory_func) (pc, buf, buflen, info);
626 /* Try again with the minimum part, if min < base. */
627 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
629 buflen = cd->min_insn_bitsize / 8;
630 status = (*info->read_memory_func) (pc, buf, buflen, info);
635 (*info->memory_error_func) (status, pc, info);
639 return print_insn (cd, pc, info, buf, buflen);
643 Print one instruction from PC on INFO->STREAM.
644 Return the size of the instruction (in bytes). */
646 typedef struct cpu_desc_list {
647 struct cpu_desc_list *next;
655 print_insn_ip2k (pc, info)
657 disassemble_info *info;
659 static cpu_desc_list *cd_list = 0;
660 cpu_desc_list *cl = 0;
661 static CGEN_CPU_DESC cd = 0;
663 static int prev_mach;
664 static int prev_endian;
667 int endian = (info->endian == BFD_ENDIAN_BIG
669 : CGEN_ENDIAN_LITTLE);
670 enum bfd_architecture arch;
672 /* ??? gdb will set mach but leave the architecture as "unknown" */
673 #ifndef CGEN_BFD_ARCH
674 #define CGEN_BFD_ARCH bfd_arch_ip2k
677 if (arch == bfd_arch_unknown)
678 arch = CGEN_BFD_ARCH;
680 /* There's no standard way to compute the machine or isa number
681 so we leave it to the target. */
682 #ifdef CGEN_COMPUTE_MACH
683 mach = CGEN_COMPUTE_MACH (info);
688 #ifdef CGEN_COMPUTE_ISA
689 isa = CGEN_COMPUTE_ISA (info);
691 isa = info->insn_sets;
694 /* If we've switched cpu's, try to find a handle we've used before */
698 || endian != prev_endian))
701 for (cl = cd_list; cl; cl = cl->next)
703 if (cl->isa == isa &&
705 cl->endian == endian)
713 /* If we haven't initialized yet, initialize the opcode table. */
716 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
717 const char *mach_name;
721 mach_name = arch_type->printable_name;
725 prev_endian = endian;
726 cd = ip2k_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
727 CGEN_CPU_OPEN_BFDMACH, mach_name,
728 CGEN_CPU_OPEN_ENDIAN, prev_endian,
733 /* save this away for future reference */
734 cl = xmalloc (sizeof (struct cpu_desc_list));
742 ip2k_cgen_init_dis (cd);
745 /* We try to have as much common code as possible.
746 But at this point some targets need to take over. */
747 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
748 but if not possible try to move this hook elsewhere rather than
750 length = CGEN_PRINT_INSN (cd, pc, info);
756 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
757 return cd->default_insn_bitsize / 8;