1 /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
2 /* Disassembler interface for targets using CGEN. -*- C -*-
3 CGEN: Cpu tools GENerator
5 THIS FILE IS MACHINE GENERATED WITH CGEN.
6 - the resultant file is machine generated, cgen-dis.in isn't
8 Copyright (C) 1996-2017 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.
32 #include "disassemble.h"
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 (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. */
64 print_fr (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
67 unsigned int attrs ATTRIBUTE_UNUSED,
68 bfd_vma pc ATTRIBUTE_UNUSED,
69 int length ATTRIBUTE_UNUSED)
71 disassemble_info *info = (disassemble_info *) dis_info;
72 const CGEN_KEYWORD_ENTRY *ke;
73 extern CGEN_KEYWORD ip2k_cgen_opval_register_names;
77 if (value == 0) /* This is (IP). */
79 (*info->fprintf_func) (info->stream, "%s", "(IP)");
83 offsettest = value >> 7;
84 offsetvalue = value & 0x7F;
86 /* Check to see if first two bits are 10 -> (DP). */
90 (*info->fprintf_func) (info->stream, "%s","(DP)");
92 (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue, "(DP)");
96 /* Check to see if first two bits are 11 -> (SP). */
100 (*info->fprintf_func) (info->stream, "%s", "(SP)");
102 (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue,"(SP)");
106 /* Attempt to print as a register keyword. */
107 ke = cgen_keyword_lookup_value (& ip2k_cgen_opval_register_names, value);
110 (*info->fprintf_func) (info->stream, "%s", ke->name);
112 /* Print as an address literal. */
113 (*info->fprintf_func) (info->stream, "$%02lx", value);
117 print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
120 unsigned int attrs ATTRIBUTE_UNUSED,
121 bfd_vma pc ATTRIBUTE_UNUSED,
122 int length ATTRIBUTE_UNUSED)
124 disassemble_info *info = (disassemble_info *) dis_info;
126 (*info->fprintf_func) (info->stream, "$%lx", value);
130 print_dollarhex8 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
133 unsigned int attrs ATTRIBUTE_UNUSED,
134 bfd_vma pc ATTRIBUTE_UNUSED,
135 int length ATTRIBUTE_UNUSED)
137 disassemble_info *info = (disassemble_info *) dis_info;
139 (*info->fprintf_func) (info->stream, "$%02lx", value);
143 print_dollarhex_addr16h (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
146 unsigned int attrs ATTRIBUTE_UNUSED,
147 bfd_vma pc ATTRIBUTE_UNUSED,
148 int length ATTRIBUTE_UNUSED)
150 disassemble_info *info = (disassemble_info *) dis_info;
152 /* This is a loadh instruction. Shift the value to the left
153 by 8 bits so that disassembled code will reassemble properly. */
154 value = ((value << 8) & 0xFF00);
156 (*info->fprintf_func) (info->stream, "$%04lx", value);
160 print_dollarhex_addr16l (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
163 unsigned int attrs ATTRIBUTE_UNUSED,
164 bfd_vma pc ATTRIBUTE_UNUSED,
165 int length ATTRIBUTE_UNUSED)
167 disassemble_info *info = (disassemble_info *) dis_info;
169 (*info->fprintf_func) (info->stream, "$%04lx", value);
173 print_dollarhex_p (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
176 unsigned int attrs ATTRIBUTE_UNUSED,
177 bfd_vma pc ATTRIBUTE_UNUSED,
178 int length ATTRIBUTE_UNUSED)
180 disassemble_info *info = (disassemble_info *) dis_info;
182 value = ((value << 14) & 0x1C000);
183 ;value = (value & 0x1FFFF);
184 (*info->fprintf_func) (info->stream, "$%05lx", value);
188 print_dollarhex_cj (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
191 unsigned int attrs ATTRIBUTE_UNUSED,
192 bfd_vma pc ATTRIBUTE_UNUSED,
193 int length ATTRIBUTE_UNUSED)
195 disassemble_info *info = (disassemble_info *) dis_info;
197 value = ((value << 1) & 0x1FFFF);
198 (*info->fprintf_func) (info->stream, "$%05lx", value);
202 print_decimal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
205 unsigned int attrs ATTRIBUTE_UNUSED,
206 bfd_vma pc ATTRIBUTE_UNUSED,
207 int length ATTRIBUTE_UNUSED)
209 disassemble_info *info = (disassemble_info *) dis_info;
211 (*info->fprintf_func) (info->stream, "%ld", value);
218 void ip2k_cgen_print_operand
219 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
221 /* Main entry point for printing operands.
222 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
223 of dis-asm.h on cgen.h.
225 This function is basically just a big switch statement. Earlier versions
226 used tables to look up the function to use, but
227 - if the table contains both assembler and disassembler functions then
228 the disassembler contains much of the assembler and vice-versa,
229 - there's a lot of inlining possibilities as things grow,
230 - using a switch statement avoids the function call overhead.
232 This function could be moved into `print_insn_normal', but keeping it
233 separate makes clear the interface between `print_insn_normal' and each of
237 ip2k_cgen_print_operand (CGEN_CPU_DESC cd,
241 void const *attrs ATTRIBUTE_UNUSED,
245 disassemble_info *info = (disassemble_info *) xinfo;
249 case IP2K_OPERAND_ADDR16CJP :
250 print_dollarhex_cj (cd, info, fields->f_addr16cjp, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
252 case IP2K_OPERAND_ADDR16H :
253 print_dollarhex_addr16h (cd, info, fields->f_imm8, 0, pc, length);
255 case IP2K_OPERAND_ADDR16L :
256 print_dollarhex_addr16l (cd, info, fields->f_imm8, 0, pc, length);
258 case IP2K_OPERAND_ADDR16P :
259 print_dollarhex_p (cd, info, fields->f_page3, 0, pc, length);
261 case IP2K_OPERAND_BITNO :
262 print_decimal (cd, info, fields->f_bitno, 0, pc, length);
264 case IP2K_OPERAND_CBIT :
265 print_normal (cd, info, 0, 0, pc, length);
267 case IP2K_OPERAND_DCBIT :
268 print_normal (cd, info, 0, 0, pc, length);
270 case IP2K_OPERAND_FR :
271 print_fr (cd, info, fields->f_reg, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
273 case IP2K_OPERAND_LIT8 :
274 print_dollarhex8 (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
276 case IP2K_OPERAND_PABITS :
277 print_normal (cd, info, 0, 0, pc, length);
279 case IP2K_OPERAND_RETI3 :
280 print_dollarhex (cd, info, fields->f_reti3, 0, pc, length);
282 case IP2K_OPERAND_ZBIT :
283 print_normal (cd, info, 0, 0, pc, length);
287 /* xgettext:c-format */
288 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
294 cgen_print_fn * const ip2k_cgen_print_handlers[] =
301 ip2k_cgen_init_dis (CGEN_CPU_DESC cd)
303 ip2k_cgen_init_opcode_table (cd);
304 ip2k_cgen_init_ibld_table (cd);
305 cd->print_handlers = & ip2k_cgen_print_handlers[0];
306 cd->print_operand = ip2k_cgen_print_operand;
310 /* Default print handler. */
313 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
317 bfd_vma pc ATTRIBUTE_UNUSED,
318 int length ATTRIBUTE_UNUSED)
320 disassemble_info *info = (disassemble_info *) dis_info;
322 /* Print the operand as directed by the attributes. */
323 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
324 ; /* nothing to do */
325 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
326 (*info->fprintf_func) (info->stream, "%ld", value);
328 (*info->fprintf_func) (info->stream, "0x%lx", value);
331 /* Default address handler. */
334 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
338 bfd_vma pc ATTRIBUTE_UNUSED,
339 int length ATTRIBUTE_UNUSED)
341 disassemble_info *info = (disassemble_info *) dis_info;
343 /* Print the operand as directed by the attributes. */
344 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
345 ; /* Nothing to do. */
346 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
347 (*info->print_address_func) (value, info);
348 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
349 (*info->print_address_func) (value, info);
350 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
351 (*info->fprintf_func) (info->stream, "%ld", (long) value);
353 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
356 /* Keyword print handler. */
359 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
361 CGEN_KEYWORD *keyword_table,
363 unsigned int attrs ATTRIBUTE_UNUSED)
365 disassemble_info *info = (disassemble_info *) dis_info;
366 const CGEN_KEYWORD_ENTRY *ke;
368 ke = cgen_keyword_lookup_value (keyword_table, value);
370 (*info->fprintf_func) (info->stream, "%s", ke->name);
372 (*info->fprintf_func) (info->stream, "???");
375 /* Default insn printer.
377 DIS_INFO is defined as `void *' so the disassembler needn't know anything
378 about disassemble_info. */
381 print_insn_normal (CGEN_CPU_DESC cd,
383 const CGEN_INSN *insn,
388 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
389 disassemble_info *info = (disassemble_info *) dis_info;
390 const CGEN_SYNTAX_CHAR_TYPE *syn;
392 CGEN_INIT_PRINT (cd);
394 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
396 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
398 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
401 if (CGEN_SYNTAX_CHAR_P (*syn))
403 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
407 /* We have an operand. */
408 ip2k_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
409 fields, CGEN_INSN_ATTRS (insn), pc, length);
413 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
415 Returns 0 if all is well, non-zero otherwise. */
418 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
420 disassemble_info *info,
423 CGEN_EXTRACT_INFO *ex_info,
424 unsigned long *insn_value)
426 int status = (*info->read_memory_func) (pc, buf, buflen, info);
430 (*info->memory_error_func) (status, pc, info);
434 ex_info->dis_info = info;
435 ex_info->valid = (1 << buflen) - 1;
436 ex_info->insn_bytes = buf;
438 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
442 /* Utility to print an insn.
443 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
444 The result is the size of the insn in bytes or zero for an unknown insn
445 or -1 if an error occurs fetching data (memory_error_func will have
449 print_insn (CGEN_CPU_DESC cd,
451 disassemble_info *info,
455 CGEN_INSN_INT insn_value;
456 const CGEN_INSN_LIST *insn_list;
457 CGEN_EXTRACT_INFO ex_info;
460 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
461 basesize = cd->base_insn_bitsize < buflen * 8 ?
462 cd->base_insn_bitsize : buflen * 8;
463 insn_value = cgen_get_insn_value (cd, buf, basesize);
466 /* Fill in ex_info fields like read_insn would. Don't actually call
467 read_insn, since the incoming buffer is already read (and possibly
468 modified a la m32r). */
469 ex_info.valid = (1 << buflen) - 1;
470 ex_info.dis_info = info;
471 ex_info.insn_bytes = buf;
473 /* The instructions are stored in hash lists.
474 Pick the first one and keep trying until we find the right one. */
476 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
477 while (insn_list != NULL)
479 const CGEN_INSN *insn = insn_list->insn;
482 unsigned long insn_value_cropped;
484 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
485 /* Not needed as insn shouldn't be in hash lists if not supported. */
486 /* Supported by this cpu? */
487 if (! ip2k_cgen_insn_supported (cd, insn))
489 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
494 /* Basic bit mask must be correct. */
495 /* ??? May wish to allow target to defer this check until the extract
498 /* Base size may exceed this instruction's size. Extract the
499 relevant part from the buffer. */
500 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
501 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
502 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
503 info->endian == BFD_ENDIAN_BIG);
505 insn_value_cropped = insn_value;
507 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
508 == CGEN_INSN_BASE_VALUE (insn))
510 /* Printing is handled in two passes. The first pass parses the
511 machine insn and extracts the fields. The second pass prints
514 /* Make sure the entire insn is loaded into insn_value, if it
516 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
517 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
519 unsigned long full_insn_value;
520 int rc = read_insn (cd, pc, info, buf,
521 CGEN_INSN_BITSIZE (insn) / 8,
522 & ex_info, & full_insn_value);
525 length = CGEN_EXTRACT_FN (cd, insn)
526 (cd, insn, &ex_info, full_insn_value, &fields, pc);
529 length = CGEN_EXTRACT_FN (cd, insn)
530 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
532 /* Length < 0 -> error. */
537 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
538 /* Length is in bits, result is in bytes. */
543 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
549 /* Default value for CGEN_PRINT_INSN.
550 The result is the size of the insn in bytes or zero for an unknown insn
551 or -1 if an error occured fetching bytes. */
553 #ifndef CGEN_PRINT_INSN
554 #define CGEN_PRINT_INSN default_print_insn
558 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
560 bfd_byte buf[CGEN_MAX_INSN_SIZE];
564 /* Attempt to read the base part of the insn. */
565 buflen = cd->base_insn_bitsize / 8;
566 status = (*info->read_memory_func) (pc, buf, buflen, info);
568 /* Try again with the minimum part, if min < base. */
569 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
571 buflen = cd->min_insn_bitsize / 8;
572 status = (*info->read_memory_func) (pc, buf, buflen, info);
577 (*info->memory_error_func) (status, pc, info);
581 return print_insn (cd, pc, info, buf, buflen);
585 Print one instruction from PC on INFO->STREAM.
586 Return the size of the instruction (in bytes). */
588 typedef struct cpu_desc_list
590 struct cpu_desc_list *next;
598 print_insn_ip2k (bfd_vma pc, disassemble_info *info)
600 static cpu_desc_list *cd_list = 0;
601 cpu_desc_list *cl = 0;
602 static CGEN_CPU_DESC cd = 0;
603 static CGEN_BITSET *prev_isa;
604 static int prev_mach;
605 static int prev_endian;
609 int endian = (info->endian == BFD_ENDIAN_BIG
611 : CGEN_ENDIAN_LITTLE);
612 enum bfd_architecture arch;
614 /* ??? gdb will set mach but leave the architecture as "unknown" */
615 #ifndef CGEN_BFD_ARCH
616 #define CGEN_BFD_ARCH bfd_arch_ip2k
619 if (arch == bfd_arch_unknown)
620 arch = CGEN_BFD_ARCH;
622 /* There's no standard way to compute the machine or isa number
623 so we leave it to the target. */
624 #ifdef CGEN_COMPUTE_MACH
625 mach = CGEN_COMPUTE_MACH (info);
630 #ifdef CGEN_COMPUTE_ISA
632 static CGEN_BITSET *permanent_isa;
635 permanent_isa = cgen_bitset_create (MAX_ISAS);
637 cgen_bitset_clear (isa);
638 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
641 isa = info->insn_sets;
644 /* If we've switched cpu's, try to find a handle we've used before */
646 && (cgen_bitset_compare (isa, prev_isa) != 0
648 || endian != prev_endian))
651 for (cl = cd_list; cl; cl = cl->next)
653 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
655 cl->endian == endian)
664 /* If we haven't initialized yet, initialize the opcode table. */
667 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
668 const char *mach_name;
672 mach_name = arch_type->printable_name;
674 prev_isa = cgen_bitset_copy (isa);
676 prev_endian = endian;
677 cd = ip2k_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
678 CGEN_CPU_OPEN_BFDMACH, mach_name,
679 CGEN_CPU_OPEN_ENDIAN, prev_endian,
684 /* Save this away for future reference. */
685 cl = xmalloc (sizeof (struct cpu_desc_list));
693 ip2k_cgen_init_dis (cd);
696 /* We try to have as much common code as possible.
697 But at this point some targets need to take over. */
698 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
699 but if not possible try to move this hook elsewhere rather than
701 length = CGEN_PRINT_INSN (cd, pc, info);
707 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
708 return cd->default_insn_bitsize / 8;