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 "or1k-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_regpair (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 = dis_info;
75 reg1_index = value & 0x1f;
76 reg2_index = reg1_index + ((value & (1 << 5)) ? 2 : 1);
78 (*info->fprintf_func) (info->stream, "r%d,r%d", reg1_index, reg2_index);
83 void or1k_cgen_print_operand
84 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
86 /* Main entry point for printing operands.
87 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
88 of dis-asm.h on cgen.h.
90 This function is basically just a big switch statement. Earlier versions
91 used tables to look up the function to use, but
92 - if the table contains both assembler and disassembler functions then
93 the disassembler contains much of the assembler and vice-versa,
94 - there's a lot of inlining possibilities as things grow,
95 - using a switch statement avoids the function call overhead.
97 This function could be moved into `print_insn_normal', but keeping it
98 separate makes clear the interface between `print_insn_normal' and each of
102 or1k_cgen_print_operand (CGEN_CPU_DESC cd,
106 void const *attrs ATTRIBUTE_UNUSED,
110 disassemble_info *info = (disassemble_info *) xinfo;
114 case OR1K_OPERAND_DISP21 :
115 print_address (cd, info, fields->f_disp21, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
117 case OR1K_OPERAND_DISP26 :
118 print_address (cd, info, fields->f_disp26, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
120 case OR1K_OPERAND_RA :
121 print_keyword (cd, info, & or1k_cgen_opval_h_gpr, fields->f_r2, 0);
123 case OR1K_OPERAND_RAD32F :
124 print_regpair (cd, info, fields->f_rad32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
126 case OR1K_OPERAND_RADF :
127 print_keyword (cd, info, & or1k_cgen_opval_h_fdr, fields->f_r2, 0);
129 case OR1K_OPERAND_RADI :
130 print_regpair (cd, info, fields->f_rad32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
132 case OR1K_OPERAND_RASF :
133 print_keyword (cd, info, & or1k_cgen_opval_h_fsr, fields->f_r2, 0);
135 case OR1K_OPERAND_RB :
136 print_keyword (cd, info, & or1k_cgen_opval_h_gpr, fields->f_r3, 0);
138 case OR1K_OPERAND_RBD32F :
139 print_regpair (cd, info, fields->f_rbd32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
141 case OR1K_OPERAND_RBDF :
142 print_keyword (cd, info, & or1k_cgen_opval_h_fdr, fields->f_r3, 0);
144 case OR1K_OPERAND_RBDI :
145 print_regpair (cd, info, fields->f_rbd32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
147 case OR1K_OPERAND_RBSF :
148 print_keyword (cd, info, & or1k_cgen_opval_h_fsr, fields->f_r3, 0);
150 case OR1K_OPERAND_RD :
151 print_keyword (cd, info, & or1k_cgen_opval_h_gpr, fields->f_r1, 0);
153 case OR1K_OPERAND_RDD32F :
154 print_regpair (cd, info, fields->f_rdd32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
156 case OR1K_OPERAND_RDDF :
157 print_keyword (cd, info, & or1k_cgen_opval_h_fdr, fields->f_r1, 0);
159 case OR1K_OPERAND_RDDI :
160 print_regpair (cd, info, fields->f_rdd32, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
162 case OR1K_OPERAND_RDSF :
163 print_keyword (cd, info, & or1k_cgen_opval_h_fsr, fields->f_r1, 0);
165 case OR1K_OPERAND_SIMM16 :
166 print_normal (cd, info, fields->f_simm16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
168 case OR1K_OPERAND_SIMM16_SPLIT :
169 print_normal (cd, info, fields->f_simm16_split, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_SIGN_OPT)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
171 case OR1K_OPERAND_UIMM16 :
172 print_normal (cd, info, fields->f_uimm16, 0, pc, length);
174 case OR1K_OPERAND_UIMM16_SPLIT :
175 print_normal (cd, info, fields->f_uimm16_split, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
177 case OR1K_OPERAND_UIMM6 :
178 print_normal (cd, info, fields->f_uimm6, 0, pc, length);
182 /* xgettext:c-format */
183 opcodes_error_handler
184 (_("internal error: unrecognized field %d while printing insn"),
190 cgen_print_fn * const or1k_cgen_print_handlers[] =
197 or1k_cgen_init_dis (CGEN_CPU_DESC cd)
199 or1k_cgen_init_opcode_table (cd);
200 or1k_cgen_init_ibld_table (cd);
201 cd->print_handlers = & or1k_cgen_print_handlers[0];
202 cd->print_operand = or1k_cgen_print_operand;
206 /* Default print handler. */
209 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
213 bfd_vma pc ATTRIBUTE_UNUSED,
214 int length ATTRIBUTE_UNUSED)
216 disassemble_info *info = (disassemble_info *) dis_info;
218 /* Print the operand as directed by the attributes. */
219 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
220 ; /* nothing to do */
221 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
222 (*info->fprintf_func) (info->stream, "%ld", value);
224 (*info->fprintf_func) (info->stream, "0x%lx", value);
227 /* Default address handler. */
230 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
234 bfd_vma pc ATTRIBUTE_UNUSED,
235 int length ATTRIBUTE_UNUSED)
237 disassemble_info *info = (disassemble_info *) dis_info;
239 /* Print the operand as directed by the attributes. */
240 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
241 ; /* Nothing to do. */
242 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
243 (*info->print_address_func) (value, info);
244 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
245 (*info->print_address_func) (value, info);
246 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
247 (*info->fprintf_func) (info->stream, "%ld", (long) value);
249 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
252 /* Keyword print handler. */
255 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
257 CGEN_KEYWORD *keyword_table,
259 unsigned int attrs ATTRIBUTE_UNUSED)
261 disassemble_info *info = (disassemble_info *) dis_info;
262 const CGEN_KEYWORD_ENTRY *ke;
264 ke = cgen_keyword_lookup_value (keyword_table, value);
266 (*info->fprintf_func) (info->stream, "%s", ke->name);
268 (*info->fprintf_func) (info->stream, "???");
271 /* Default insn printer.
273 DIS_INFO is defined as `void *' so the disassembler needn't know anything
274 about disassemble_info. */
277 print_insn_normal (CGEN_CPU_DESC cd,
279 const CGEN_INSN *insn,
284 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
285 disassemble_info *info = (disassemble_info *) dis_info;
286 const CGEN_SYNTAX_CHAR_TYPE *syn;
288 CGEN_INIT_PRINT (cd);
290 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
292 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
294 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
297 if (CGEN_SYNTAX_CHAR_P (*syn))
299 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
303 /* We have an operand. */
304 or1k_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
305 fields, CGEN_INSN_ATTRS (insn), pc, length);
309 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
311 Returns 0 if all is well, non-zero otherwise. */
314 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
316 disassemble_info *info,
319 CGEN_EXTRACT_INFO *ex_info,
320 unsigned long *insn_value)
322 int status = (*info->read_memory_func) (pc, buf, buflen, info);
326 (*info->memory_error_func) (status, pc, info);
330 ex_info->dis_info = info;
331 ex_info->valid = (1 << buflen) - 1;
332 ex_info->insn_bytes = buf;
334 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
338 /* Utility to print an insn.
339 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
340 The result is the size of the insn in bytes or zero for an unknown insn
341 or -1 if an error occurs fetching data (memory_error_func will have
345 print_insn (CGEN_CPU_DESC cd,
347 disassemble_info *info,
351 CGEN_INSN_INT insn_value;
352 const CGEN_INSN_LIST *insn_list;
353 CGEN_EXTRACT_INFO ex_info;
356 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
357 basesize = cd->base_insn_bitsize < buflen * 8 ?
358 cd->base_insn_bitsize : buflen * 8;
359 insn_value = cgen_get_insn_value (cd, buf, basesize);
362 /* Fill in ex_info fields like read_insn would. Don't actually call
363 read_insn, since the incoming buffer is already read (and possibly
364 modified a la m32r). */
365 ex_info.valid = (1 << buflen) - 1;
366 ex_info.dis_info = info;
367 ex_info.insn_bytes = buf;
369 /* The instructions are stored in hash lists.
370 Pick the first one and keep trying until we find the right one. */
372 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
373 while (insn_list != NULL)
375 const CGEN_INSN *insn = insn_list->insn;
378 unsigned long insn_value_cropped;
380 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
381 /* Not needed as insn shouldn't be in hash lists if not supported. */
382 /* Supported by this cpu? */
383 if (! or1k_cgen_insn_supported (cd, insn))
385 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
390 /* Basic bit mask must be correct. */
391 /* ??? May wish to allow target to defer this check until the extract
394 /* Base size may exceed this instruction's size. Extract the
395 relevant part from the buffer. */
396 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
397 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
398 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
399 info->endian == BFD_ENDIAN_BIG);
401 insn_value_cropped = insn_value;
403 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
404 == CGEN_INSN_BASE_VALUE (insn))
406 /* Printing is handled in two passes. The first pass parses the
407 machine insn and extracts the fields. The second pass prints
410 /* Make sure the entire insn is loaded into insn_value, if it
412 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
413 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
415 unsigned long full_insn_value;
416 int rc = read_insn (cd, pc, info, buf,
417 CGEN_INSN_BITSIZE (insn) / 8,
418 & ex_info, & full_insn_value);
421 length = CGEN_EXTRACT_FN (cd, insn)
422 (cd, insn, &ex_info, full_insn_value, &fields, pc);
425 length = CGEN_EXTRACT_FN (cd, insn)
426 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
428 /* Length < 0 -> error. */
433 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
434 /* Length is in bits, result is in bytes. */
439 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
445 /* Default value for CGEN_PRINT_INSN.
446 The result is the size of the insn in bytes or zero for an unknown insn
447 or -1 if an error occured fetching bytes. */
449 #ifndef CGEN_PRINT_INSN
450 #define CGEN_PRINT_INSN default_print_insn
454 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
456 bfd_byte buf[CGEN_MAX_INSN_SIZE];
460 /* Attempt to read the base part of the insn. */
461 buflen = cd->base_insn_bitsize / 8;
462 status = (*info->read_memory_func) (pc, buf, buflen, info);
464 /* Try again with the minimum part, if min < base. */
465 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
467 buflen = cd->min_insn_bitsize / 8;
468 status = (*info->read_memory_func) (pc, buf, buflen, info);
473 (*info->memory_error_func) (status, pc, info);
477 return print_insn (cd, pc, info, buf, buflen);
481 Print one instruction from PC on INFO->STREAM.
482 Return the size of the instruction (in bytes). */
484 typedef struct cpu_desc_list
486 struct cpu_desc_list *next;
494 print_insn_or1k (bfd_vma pc, disassemble_info *info)
496 static cpu_desc_list *cd_list = 0;
497 cpu_desc_list *cl = 0;
498 static CGEN_CPU_DESC cd = 0;
499 static CGEN_BITSET *prev_isa;
500 static int prev_mach;
501 static int prev_endian;
505 int endian = (info->endian == BFD_ENDIAN_BIG
507 : CGEN_ENDIAN_LITTLE);
508 enum bfd_architecture arch;
510 /* ??? gdb will set mach but leave the architecture as "unknown" */
511 #ifndef CGEN_BFD_ARCH
512 #define CGEN_BFD_ARCH bfd_arch_or1k
515 if (arch == bfd_arch_unknown)
516 arch = CGEN_BFD_ARCH;
518 /* There's no standard way to compute the machine or isa number
519 so we leave it to the target. */
520 #ifdef CGEN_COMPUTE_MACH
521 mach = CGEN_COMPUTE_MACH (info);
526 #ifdef CGEN_COMPUTE_ISA
528 static CGEN_BITSET *permanent_isa;
531 permanent_isa = cgen_bitset_create (MAX_ISAS);
533 cgen_bitset_clear (isa);
534 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
537 isa = info->insn_sets;
540 /* If we've switched cpu's, try to find a handle we've used before */
542 && (cgen_bitset_compare (isa, prev_isa) != 0
544 || endian != prev_endian))
547 for (cl = cd_list; cl; cl = cl->next)
549 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
551 cl->endian == endian)
560 /* If we haven't initialized yet, initialize the opcode table. */
563 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
564 const char *mach_name;
568 mach_name = arch_type->printable_name;
570 prev_isa = cgen_bitset_copy (isa);
572 prev_endian = endian;
573 cd = or1k_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
574 CGEN_CPU_OPEN_BFDMACH, mach_name,
575 CGEN_CPU_OPEN_ENDIAN, prev_endian,
580 /* Save this away for future reference. */
581 cl = xmalloc (sizeof (struct cpu_desc_list));
589 or1k_cgen_init_dis (cd);
592 /* We try to have as much common code as possible.
593 But at this point some targets need to take over. */
594 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
595 but if not possible try to move this hook elsewhere rather than
597 length = CGEN_PRINT_INSN (cd, pc, info);
603 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
604 return cd->default_insn_bitsize / 8;