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) 1996-2019 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 "iq2000-desc.h"
37 #include "iq2000-opc.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 void iq2000_cgen_print_operand
63 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
65 /* Main entry point for printing operands.
66 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
67 of dis-asm.h on cgen.h.
69 This function is basically just a big switch statement. Earlier versions
70 used tables to look up the function to use, but
71 - if the table contains both assembler and disassembler functions then
72 the disassembler contains much of the assembler and vice-versa,
73 - there's a lot of inlining possibilities as things grow,
74 - using a switch statement avoids the function call overhead.
76 This function could be moved into `print_insn_normal', but keeping it
77 separate makes clear the interface between `print_insn_normal' and each of
81 iq2000_cgen_print_operand (CGEN_CPU_DESC cd,
85 void const *attrs ATTRIBUTE_UNUSED,
89 disassemble_info *info = (disassemble_info *) xinfo;
93 case IQ2000_OPERAND__INDEX :
94 print_normal (cd, info, fields->f_index, 0, pc, length);
96 case IQ2000_OPERAND_BASE :
97 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rs, 0);
99 case IQ2000_OPERAND_BASEOFF :
100 print_address (cd, info, fields->f_imm, 0, pc, length);
102 case IQ2000_OPERAND_BITNUM :
103 print_normal (cd, info, fields->f_rt, 0, pc, length);
105 case IQ2000_OPERAND_BYTECOUNT :
106 print_normal (cd, info, fields->f_bytecount, 0, pc, length);
108 case IQ2000_OPERAND_CAM_Y :
109 print_normal (cd, info, fields->f_cam_y, 0, pc, length);
111 case IQ2000_OPERAND_CAM_Z :
112 print_normal (cd, info, fields->f_cam_z, 0, pc, length);
114 case IQ2000_OPERAND_CM_3FUNC :
115 print_normal (cd, info, fields->f_cm_3func, 0, pc, length);
117 case IQ2000_OPERAND_CM_3Z :
118 print_normal (cd, info, fields->f_cm_3z, 0, pc, length);
120 case IQ2000_OPERAND_CM_4FUNC :
121 print_normal (cd, info, fields->f_cm_4func, 0, pc, length);
123 case IQ2000_OPERAND_CM_4Z :
124 print_normal (cd, info, fields->f_cm_4z, 0, pc, length);
126 case IQ2000_OPERAND_COUNT :
127 print_normal (cd, info, fields->f_count, 0, pc, length);
129 case IQ2000_OPERAND_EXECODE :
130 print_normal (cd, info, fields->f_excode, 0, pc, length);
132 case IQ2000_OPERAND_HI16 :
133 print_normal (cd, info, fields->f_imm, 0, pc, length);
135 case IQ2000_OPERAND_IMM :
136 print_normal (cd, info, fields->f_imm, 0, pc, length);
138 case IQ2000_OPERAND_JMPTARG :
139 print_address (cd, info, fields->f_jtarg, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
141 case IQ2000_OPERAND_JMPTARGQ10 :
142 print_address (cd, info, fields->f_jtargq10, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
144 case IQ2000_OPERAND_LO16 :
145 print_normal (cd, info, fields->f_imm, 0, pc, length);
147 case IQ2000_OPERAND_MASK :
148 print_normal (cd, info, fields->f_mask, 0, pc, length);
150 case IQ2000_OPERAND_MASKL :
151 print_normal (cd, info, fields->f_maskl, 0, pc, length);
153 case IQ2000_OPERAND_MASKQ10 :
154 print_normal (cd, info, fields->f_maskq10, 0, pc, length);
156 case IQ2000_OPERAND_MASKR :
157 print_normal (cd, info, fields->f_rs, 0, pc, length);
159 case IQ2000_OPERAND_MLO16 :
160 print_normal (cd, info, fields->f_imm, 0, pc, length);
162 case IQ2000_OPERAND_OFFSET :
163 print_address (cd, info, fields->f_offset, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
165 case IQ2000_OPERAND_RD :
166 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rd, 0);
168 case IQ2000_OPERAND_RD_RS :
169 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rd_rs, 0|(1<<CGEN_OPERAND_VIRTUAL));
171 case IQ2000_OPERAND_RD_RT :
172 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rd_rt, 0|(1<<CGEN_OPERAND_VIRTUAL));
174 case IQ2000_OPERAND_RS :
175 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rs, 0);
177 case IQ2000_OPERAND_RT :
178 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rt, 0);
180 case IQ2000_OPERAND_RT_RS :
181 print_keyword (cd, info, & iq2000_cgen_opval_gr_names, fields->f_rt_rs, 0|(1<<CGEN_OPERAND_VIRTUAL));
183 case IQ2000_OPERAND_SHAMT :
184 print_normal (cd, info, fields->f_shamt, 0, pc, length);
188 /* xgettext:c-format */
189 opcodes_error_handler
190 (_("internal error: unrecognized field %d while printing insn"),
196 cgen_print_fn * const iq2000_cgen_print_handlers[] =
203 iq2000_cgen_init_dis (CGEN_CPU_DESC cd)
205 iq2000_cgen_init_opcode_table (cd);
206 iq2000_cgen_init_ibld_table (cd);
207 cd->print_handlers = & iq2000_cgen_print_handlers[0];
208 cd->print_operand = iq2000_cgen_print_operand;
212 /* Default print handler. */
215 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
219 bfd_vma pc ATTRIBUTE_UNUSED,
220 int length ATTRIBUTE_UNUSED)
222 disassemble_info *info = (disassemble_info *) dis_info;
224 /* Print the operand as directed by the attributes. */
225 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
226 ; /* nothing to do */
227 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
228 (*info->fprintf_func) (info->stream, "%ld", value);
230 (*info->fprintf_func) (info->stream, "0x%lx", value);
233 /* Default address handler. */
236 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
240 bfd_vma pc ATTRIBUTE_UNUSED,
241 int length ATTRIBUTE_UNUSED)
243 disassemble_info *info = (disassemble_info *) dis_info;
245 /* Print the operand as directed by the attributes. */
246 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
247 ; /* Nothing to do. */
248 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
249 (*info->print_address_func) (value, info);
250 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
251 (*info->print_address_func) (value, info);
252 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
253 (*info->fprintf_func) (info->stream, "%ld", (long) value);
255 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
258 /* Keyword print handler. */
261 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
263 CGEN_KEYWORD *keyword_table,
265 unsigned int attrs ATTRIBUTE_UNUSED)
267 disassemble_info *info = (disassemble_info *) dis_info;
268 const CGEN_KEYWORD_ENTRY *ke;
270 ke = cgen_keyword_lookup_value (keyword_table, value);
272 (*info->fprintf_func) (info->stream, "%s", ke->name);
274 (*info->fprintf_func) (info->stream, "???");
277 /* Default insn printer.
279 DIS_INFO is defined as `void *' so the disassembler needn't know anything
280 about disassemble_info. */
283 print_insn_normal (CGEN_CPU_DESC cd,
285 const CGEN_INSN *insn,
290 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
291 disassemble_info *info = (disassemble_info *) dis_info;
292 const CGEN_SYNTAX_CHAR_TYPE *syn;
294 CGEN_INIT_PRINT (cd);
296 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
298 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
300 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
303 if (CGEN_SYNTAX_CHAR_P (*syn))
305 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
309 /* We have an operand. */
310 iq2000_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
311 fields, CGEN_INSN_ATTRS (insn), pc, length);
315 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
317 Returns 0 if all is well, non-zero otherwise. */
320 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
322 disassemble_info *info,
325 CGEN_EXTRACT_INFO *ex_info,
326 unsigned long *insn_value)
328 int status = (*info->read_memory_func) (pc, buf, buflen, info);
332 (*info->memory_error_func) (status, pc, info);
336 ex_info->dis_info = info;
337 ex_info->valid = (1 << buflen) - 1;
338 ex_info->insn_bytes = buf;
340 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
344 /* Utility to print an insn.
345 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
346 The result is the size of the insn in bytes or zero for an unknown insn
347 or -1 if an error occurs fetching data (memory_error_func will have
351 print_insn (CGEN_CPU_DESC cd,
353 disassemble_info *info,
357 CGEN_INSN_INT insn_value;
358 const CGEN_INSN_LIST *insn_list;
359 CGEN_EXTRACT_INFO ex_info;
362 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
363 basesize = cd->base_insn_bitsize < buflen * 8 ?
364 cd->base_insn_bitsize : buflen * 8;
365 insn_value = cgen_get_insn_value (cd, buf, basesize);
368 /* Fill in ex_info fields like read_insn would. Don't actually call
369 read_insn, since the incoming buffer is already read (and possibly
370 modified a la m32r). */
371 ex_info.valid = (1 << buflen) - 1;
372 ex_info.dis_info = info;
373 ex_info.insn_bytes = buf;
375 /* The instructions are stored in hash lists.
376 Pick the first one and keep trying until we find the right one. */
378 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
379 while (insn_list != NULL)
381 const CGEN_INSN *insn = insn_list->insn;
384 unsigned long insn_value_cropped;
386 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
387 /* Not needed as insn shouldn't be in hash lists if not supported. */
388 /* Supported by this cpu? */
389 if (! iq2000_cgen_insn_supported (cd, insn))
391 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
396 /* Basic bit mask must be correct. */
397 /* ??? May wish to allow target to defer this check until the extract
400 /* Base size may exceed this instruction's size. Extract the
401 relevant part from the buffer. */
402 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
403 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
404 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
405 info->endian == BFD_ENDIAN_BIG);
407 insn_value_cropped = insn_value;
409 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
410 == CGEN_INSN_BASE_VALUE (insn))
412 /* Printing is handled in two passes. The first pass parses the
413 machine insn and extracts the fields. The second pass prints
416 /* Make sure the entire insn is loaded into insn_value, if it
418 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
419 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
421 unsigned long full_insn_value;
422 int rc = read_insn (cd, pc, info, buf,
423 CGEN_INSN_BITSIZE (insn) / 8,
424 & ex_info, & full_insn_value);
427 length = CGEN_EXTRACT_FN (cd, insn)
428 (cd, insn, &ex_info, full_insn_value, &fields, pc);
431 length = CGEN_EXTRACT_FN (cd, insn)
432 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
434 /* Length < 0 -> error. */
439 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
440 /* Length is in bits, result is in bytes. */
445 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
451 /* Default value for CGEN_PRINT_INSN.
452 The result is the size of the insn in bytes or zero for an unknown insn
453 or -1 if an error occured fetching bytes. */
455 #ifndef CGEN_PRINT_INSN
456 #define CGEN_PRINT_INSN default_print_insn
460 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
462 bfd_byte buf[CGEN_MAX_INSN_SIZE];
466 /* Attempt to read the base part of the insn. */
467 buflen = cd->base_insn_bitsize / 8;
468 status = (*info->read_memory_func) (pc, buf, buflen, info);
470 /* Try again with the minimum part, if min < base. */
471 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
473 buflen = cd->min_insn_bitsize / 8;
474 status = (*info->read_memory_func) (pc, buf, buflen, info);
479 (*info->memory_error_func) (status, pc, info);
483 return print_insn (cd, pc, info, buf, buflen);
487 Print one instruction from PC on INFO->STREAM.
488 Return the size of the instruction (in bytes). */
490 typedef struct cpu_desc_list
492 struct cpu_desc_list *next;
500 print_insn_iq2000 (bfd_vma pc, disassemble_info *info)
502 static cpu_desc_list *cd_list = 0;
503 cpu_desc_list *cl = 0;
504 static CGEN_CPU_DESC cd = 0;
505 static CGEN_BITSET *prev_isa;
506 static int prev_mach;
507 static int prev_endian;
511 int endian = (info->endian == BFD_ENDIAN_BIG
513 : CGEN_ENDIAN_LITTLE);
514 enum bfd_architecture arch;
516 /* ??? gdb will set mach but leave the architecture as "unknown" */
517 #ifndef CGEN_BFD_ARCH
518 #define CGEN_BFD_ARCH bfd_arch_iq2000
521 if (arch == bfd_arch_unknown)
522 arch = CGEN_BFD_ARCH;
524 /* There's no standard way to compute the machine or isa number
525 so we leave it to the target. */
526 #ifdef CGEN_COMPUTE_MACH
527 mach = CGEN_COMPUTE_MACH (info);
532 #ifdef CGEN_COMPUTE_ISA
534 static CGEN_BITSET *permanent_isa;
537 permanent_isa = cgen_bitset_create (MAX_ISAS);
539 cgen_bitset_clear (isa);
540 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
543 isa = info->insn_sets;
546 /* If we've switched cpu's, try to find a handle we've used before */
548 && (cgen_bitset_compare (isa, prev_isa) != 0
550 || endian != prev_endian))
553 for (cl = cd_list; cl; cl = cl->next)
555 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
557 cl->endian == endian)
566 /* If we haven't initialized yet, initialize the opcode table. */
569 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
570 const char *mach_name;
574 mach_name = arch_type->printable_name;
576 prev_isa = cgen_bitset_copy (isa);
578 prev_endian = endian;
579 cd = iq2000_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
580 CGEN_CPU_OPEN_BFDMACH, mach_name,
581 CGEN_CPU_OPEN_ENDIAN, prev_endian,
586 /* Save this away for future reference. */
587 cl = xmalloc (sizeof (struct cpu_desc_list));
595 iq2000_cgen_init_dis (cd);
598 /* We try to have as much common code as possible.
599 But at this point some targets need to take over. */
600 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
601 but if not possible try to move this hook elsewhere rather than
603 length = CGEN_PRINT_INSN (cd, pc, info);
609 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
610 return cd->default_insn_bitsize / 8;