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) 1996-2016 Free Software Foundation, Inc.
9 This file is part of libopcodes.
11 This library 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 3, or (at your option)
16 It is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 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 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
34 #include "libiberty.h"
35 #include "epiphany-desc.h"
36 #include "epiphany-opc.h"
39 /* Default text to print if an instruction isn't recognized. */
40 #define UNKNOWN_INSN_MSG _("*unknown*")
42 static void print_normal
43 (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
44 static void print_address
45 (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
46 static void print_keyword
47 (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
48 static void print_insn_normal
49 (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
51 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
52 static int default_print_insn
53 (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
55 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
58 /* -- disassembler routines inserted here. */
62 #define CGEN_PRINT_INSN epiphany_print_insn
65 epiphany_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
67 bfd_byte buf[CGEN_MAX_INSN_SIZE];
71 info->bytes_per_chunk = 2;
72 info->bytes_per_line = 4;
74 /* Attempt to read the base part of the insn. */
75 buflen = cd->base_insn_bitsize / 8;
76 status = (*info->read_memory_func) (pc, buf, buflen, info);
78 /* Try again with the minimum part, if min < base. */
79 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
81 buflen = cd->min_insn_bitsize / 8;
82 status = (*info->read_memory_func) (pc, buf, buflen, info);
87 (*info->memory_error_func) (status, pc, info);
91 return print_insn (cd, pc, info, buf, buflen);
96 print_postindex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
99 unsigned int attrs ATTRIBUTE_UNUSED,
100 bfd_vma pc ATTRIBUTE_UNUSED,
101 int length ATTRIBUTE_UNUSED)
103 disassemble_info *info = (disassemble_info *) dis_info;
104 (*info->fprintf_func) (info->stream, value ? "-" : "+");
108 print_simm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
111 unsigned int attrs ATTRIBUTE_UNUSED,
112 bfd_vma pc ATTRIBUTE_UNUSED,
113 int length ATTRIBUTE_UNUSED)
115 print_address (cd, dis_info, value, attrs, pc, length);
119 print_uimm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
122 unsigned int attrs ATTRIBUTE_UNUSED,
123 bfd_vma pc ATTRIBUTE_UNUSED,
124 int length ATTRIBUTE_UNUSED)
126 disassemble_info *info = (disassemble_info *)dis_info;
129 (*info->fprintf_func) (info->stream, "-");
132 print_address (cd, dis_info, value, attrs, pc, length);
138 void epiphany_cgen_print_operand
139 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
141 /* Main entry point for printing operands.
142 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
143 of dis-asm.h on cgen.h.
145 This function is basically just a big switch statement. Earlier versions
146 used tables to look up the function to use, but
147 - if the table contains both assembler and disassembler functions then
148 the disassembler contains much of the assembler and vice-versa,
149 - there's a lot of inlining possibilities as things grow,
150 - using a switch statement avoids the function call overhead.
152 This function could be moved into `print_insn_normal', but keeping it
153 separate makes clear the interface between `print_insn_normal' and each of
157 epiphany_cgen_print_operand (CGEN_CPU_DESC cd,
161 void const *attrs ATTRIBUTE_UNUSED,
165 disassemble_info *info = (disassemble_info *) xinfo;
169 case EPIPHANY_OPERAND_DIRECTION :
170 print_postindex (cd, info, fields->f_addsubx, 0, pc, length);
172 case EPIPHANY_OPERAND_DISP11 :
173 print_uimm_not_reg (cd, info, fields->f_disp11, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
175 case EPIPHANY_OPERAND_DISP3 :
176 print_normal (cd, info, fields->f_disp3, 0, pc, length);
178 case EPIPHANY_OPERAND_DPMI :
179 print_postindex (cd, info, fields->f_subd, 0, pc, length);
181 case EPIPHANY_OPERAND_FRD :
182 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
184 case EPIPHANY_OPERAND_FRD6 :
185 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
187 case EPIPHANY_OPERAND_FRM :
188 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
190 case EPIPHANY_OPERAND_FRM6 :
191 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
193 case EPIPHANY_OPERAND_FRN :
194 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
196 case EPIPHANY_OPERAND_FRN6 :
197 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
199 case EPIPHANY_OPERAND_IMM16 :
200 print_address (cd, info, fields->f_imm16, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
202 case EPIPHANY_OPERAND_IMM8 :
203 print_address (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_RELAX), pc, length);
205 case EPIPHANY_OPERAND_RD :
206 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
208 case EPIPHANY_OPERAND_RD6 :
209 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
211 case EPIPHANY_OPERAND_RM :
212 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
214 case EPIPHANY_OPERAND_RM6 :
215 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
217 case EPIPHANY_OPERAND_RN :
218 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
220 case EPIPHANY_OPERAND_RN6 :
221 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
223 case EPIPHANY_OPERAND_SD :
224 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd, 0);
226 case EPIPHANY_OPERAND_SD6 :
227 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
229 case EPIPHANY_OPERAND_SDDMA :
230 print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
232 case EPIPHANY_OPERAND_SDMEM :
233 print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
235 case EPIPHANY_OPERAND_SDMESH :
236 print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
238 case EPIPHANY_OPERAND_SHIFT :
239 print_normal (cd, info, fields->f_shift, 0, pc, length);
241 case EPIPHANY_OPERAND_SIMM11 :
242 print_simm_not_reg (cd, info, fields->f_sdisp11, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
244 case EPIPHANY_OPERAND_SIMM24 :
245 print_address (cd, info, fields->f_simm24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
247 case EPIPHANY_OPERAND_SIMM3 :
248 print_simm_not_reg (cd, info, fields->f_sdisp3, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX), pc, length);
250 case EPIPHANY_OPERAND_SIMM8 :
251 print_address (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
253 case EPIPHANY_OPERAND_SN :
254 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn, 0);
256 case EPIPHANY_OPERAND_SN6 :
257 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
259 case EPIPHANY_OPERAND_SNDMA :
260 print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
262 case EPIPHANY_OPERAND_SNMEM :
263 print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
265 case EPIPHANY_OPERAND_SNMESH :
266 print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
268 case EPIPHANY_OPERAND_SWI_NUM :
269 print_uimm_not_reg (cd, info, fields->f_trap_num, 0, pc, length);
271 case EPIPHANY_OPERAND_TRAPNUM6 :
272 print_normal (cd, info, fields->f_trap_num, 0, pc, length);
276 /* xgettext:c-format */
277 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
283 cgen_print_fn * const epiphany_cgen_print_handlers[] =
290 epiphany_cgen_init_dis (CGEN_CPU_DESC cd)
292 epiphany_cgen_init_opcode_table (cd);
293 epiphany_cgen_init_ibld_table (cd);
294 cd->print_handlers = & epiphany_cgen_print_handlers[0];
295 cd->print_operand = epiphany_cgen_print_operand;
299 /* Default print handler. */
302 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
306 bfd_vma pc ATTRIBUTE_UNUSED,
307 int length ATTRIBUTE_UNUSED)
309 disassemble_info *info = (disassemble_info *) dis_info;
311 /* Print the operand as directed by the attributes. */
312 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
313 ; /* nothing to do */
314 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
315 (*info->fprintf_func) (info->stream, "%ld", value);
317 (*info->fprintf_func) (info->stream, "0x%lx", value);
320 /* Default address handler. */
323 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
327 bfd_vma pc ATTRIBUTE_UNUSED,
328 int length ATTRIBUTE_UNUSED)
330 disassemble_info *info = (disassemble_info *) dis_info;
332 /* Print the operand as directed by the attributes. */
333 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
334 ; /* Nothing to do. */
335 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
336 (*info->print_address_func) (value, info);
337 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
338 (*info->print_address_func) (value, info);
339 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
340 (*info->fprintf_func) (info->stream, "%ld", (long) value);
342 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
345 /* Keyword print handler. */
348 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
350 CGEN_KEYWORD *keyword_table,
352 unsigned int attrs ATTRIBUTE_UNUSED)
354 disassemble_info *info = (disassemble_info *) dis_info;
355 const CGEN_KEYWORD_ENTRY *ke;
357 ke = cgen_keyword_lookup_value (keyword_table, value);
359 (*info->fprintf_func) (info->stream, "%s", ke->name);
361 (*info->fprintf_func) (info->stream, "???");
364 /* Default insn printer.
366 DIS_INFO is defined as `void *' so the disassembler needn't know anything
367 about disassemble_info. */
370 print_insn_normal (CGEN_CPU_DESC cd,
372 const CGEN_INSN *insn,
377 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
378 disassemble_info *info = (disassemble_info *) dis_info;
379 const CGEN_SYNTAX_CHAR_TYPE *syn;
381 CGEN_INIT_PRINT (cd);
383 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
385 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
387 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
390 if (CGEN_SYNTAX_CHAR_P (*syn))
392 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
396 /* We have an operand. */
397 epiphany_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
398 fields, CGEN_INSN_ATTRS (insn), pc, length);
402 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
404 Returns 0 if all is well, non-zero otherwise. */
407 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
409 disassemble_info *info,
412 CGEN_EXTRACT_INFO *ex_info,
413 unsigned long *insn_value)
415 int status = (*info->read_memory_func) (pc, buf, buflen, info);
419 (*info->memory_error_func) (status, pc, info);
423 ex_info->dis_info = info;
424 ex_info->valid = (1 << buflen) - 1;
425 ex_info->insn_bytes = buf;
427 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
431 /* Utility to print an insn.
432 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
433 The result is the size of the insn in bytes or zero for an unknown insn
434 or -1 if an error occurs fetching data (memory_error_func will have
438 print_insn (CGEN_CPU_DESC cd,
440 disassemble_info *info,
444 CGEN_INSN_INT insn_value;
445 const CGEN_INSN_LIST *insn_list;
446 CGEN_EXTRACT_INFO ex_info;
449 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
450 basesize = cd->base_insn_bitsize < buflen * 8 ?
451 cd->base_insn_bitsize : buflen * 8;
452 insn_value = cgen_get_insn_value (cd, buf, basesize);
455 /* Fill in ex_info fields like read_insn would. Don't actually call
456 read_insn, since the incoming buffer is already read (and possibly
457 modified a la m32r). */
458 ex_info.valid = (1 << buflen) - 1;
459 ex_info.dis_info = info;
460 ex_info.insn_bytes = buf;
462 /* The instructions are stored in hash lists.
463 Pick the first one and keep trying until we find the right one. */
465 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
466 while (insn_list != NULL)
468 const CGEN_INSN *insn = insn_list->insn;
471 unsigned long insn_value_cropped;
473 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
474 /* Not needed as insn shouldn't be in hash lists if not supported. */
475 /* Supported by this cpu? */
476 if (! epiphany_cgen_insn_supported (cd, insn))
478 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
483 /* Basic bit mask must be correct. */
484 /* ??? May wish to allow target to defer this check until the extract
487 /* Base size may exceed this instruction's size. Extract the
488 relevant part from the buffer. */
489 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
490 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
491 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
492 info->endian == BFD_ENDIAN_BIG);
494 insn_value_cropped = insn_value;
496 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
497 == CGEN_INSN_BASE_VALUE (insn))
499 /* Printing is handled in two passes. The first pass parses the
500 machine insn and extracts the fields. The second pass prints
503 /* Make sure the entire insn is loaded into insn_value, if it
505 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
506 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
508 unsigned long full_insn_value;
509 int rc = read_insn (cd, pc, info, buf,
510 CGEN_INSN_BITSIZE (insn) / 8,
511 & ex_info, & full_insn_value);
514 length = CGEN_EXTRACT_FN (cd, insn)
515 (cd, insn, &ex_info, full_insn_value, &fields, pc);
518 length = CGEN_EXTRACT_FN (cd, insn)
519 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
521 /* Length < 0 -> error. */
526 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
527 /* Length is in bits, result is in bytes. */
532 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
538 /* Default value for CGEN_PRINT_INSN.
539 The result is the size of the insn in bytes or zero for an unknown insn
540 or -1 if an error occured fetching bytes. */
542 #ifndef CGEN_PRINT_INSN
543 #define CGEN_PRINT_INSN default_print_insn
547 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
549 bfd_byte buf[CGEN_MAX_INSN_SIZE];
553 /* Attempt to read the base part of the insn. */
554 buflen = cd->base_insn_bitsize / 8;
555 status = (*info->read_memory_func) (pc, buf, buflen, info);
557 /* Try again with the minimum part, if min < base. */
558 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
560 buflen = cd->min_insn_bitsize / 8;
561 status = (*info->read_memory_func) (pc, buf, buflen, info);
566 (*info->memory_error_func) (status, pc, info);
570 return print_insn (cd, pc, info, buf, buflen);
574 Print one instruction from PC on INFO->STREAM.
575 Return the size of the instruction (in bytes). */
577 typedef struct cpu_desc_list
579 struct cpu_desc_list *next;
587 print_insn_epiphany (bfd_vma pc, disassemble_info *info)
589 static cpu_desc_list *cd_list = 0;
590 cpu_desc_list *cl = 0;
591 static CGEN_CPU_DESC cd = 0;
592 static CGEN_BITSET *prev_isa;
593 static int prev_mach;
594 static int prev_endian;
598 int endian = (info->endian == BFD_ENDIAN_BIG
600 : CGEN_ENDIAN_LITTLE);
601 enum bfd_architecture arch;
603 /* ??? gdb will set mach but leave the architecture as "unknown" */
604 #ifndef CGEN_BFD_ARCH
605 #define CGEN_BFD_ARCH bfd_arch_epiphany
608 if (arch == bfd_arch_unknown)
609 arch = CGEN_BFD_ARCH;
611 /* There's no standard way to compute the machine or isa number
612 so we leave it to the target. */
613 #ifdef CGEN_COMPUTE_MACH
614 mach = CGEN_COMPUTE_MACH (info);
619 #ifdef CGEN_COMPUTE_ISA
621 static CGEN_BITSET *permanent_isa;
624 permanent_isa = cgen_bitset_create (MAX_ISAS);
626 cgen_bitset_clear (isa);
627 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
630 isa = info->insn_sets;
633 /* If we've switched cpu's, try to find a handle we've used before */
635 && (cgen_bitset_compare (isa, prev_isa) != 0
637 || endian != prev_endian))
640 for (cl = cd_list; cl; cl = cl->next)
642 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
644 cl->endian == endian)
653 /* If we haven't initialized yet, initialize the opcode table. */
656 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
657 const char *mach_name;
661 mach_name = arch_type->printable_name;
663 prev_isa = cgen_bitset_copy (isa);
665 prev_endian = endian;
666 cd = epiphany_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
667 CGEN_CPU_OPEN_BFDMACH, mach_name,
668 CGEN_CPU_OPEN_ENDIAN, prev_endian,
673 /* Save this away for future reference. */
674 cl = xmalloc (sizeof (struct cpu_desc_list));
682 epiphany_cgen_init_dis (cd);
685 /* We try to have as much common code as possible.
686 But at this point some targets need to take over. */
687 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
688 but if not possible try to move this hook elsewhere rather than
690 length = CGEN_PRINT_INSN (cd, pc, info);
696 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
697 return cd->default_insn_bitsize / 8;