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;
73 /* Attempt to read the base part of the insn. */
74 info->bytes_per_line = buflen = cd->base_insn_bitsize / 8;
75 status = (*info->read_memory_func) (pc, buf, buflen, info);
77 /* Try again with the minimum part, if min < base. */
78 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
80 info->bytes_per_line = buflen = cd->min_insn_bitsize / 8;
81 status = (*info->read_memory_func) (pc, buf, buflen, info);
86 (*info->memory_error_func) (status, pc, info);
90 return print_insn (cd, pc, info, buf, buflen);
95 print_postindex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
98 unsigned int attrs ATTRIBUTE_UNUSED,
99 bfd_vma pc ATTRIBUTE_UNUSED,
100 int length ATTRIBUTE_UNUSED)
102 disassemble_info *info = (disassemble_info *) dis_info;
103 (*info->fprintf_func) (info->stream, value ? "-" : "+");
107 print_simm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
110 unsigned int attrs ATTRIBUTE_UNUSED,
111 bfd_vma pc ATTRIBUTE_UNUSED,
112 int length ATTRIBUTE_UNUSED)
114 print_address (cd, dis_info, value, attrs, pc, length);
118 print_uimm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
121 unsigned int attrs ATTRIBUTE_UNUSED,
122 bfd_vma pc ATTRIBUTE_UNUSED,
123 int length ATTRIBUTE_UNUSED)
125 disassemble_info *info = (disassemble_info *)dis_info;
128 (*info->fprintf_func) (info->stream, "-");
131 print_address (cd, dis_info, value, attrs, pc, length);
137 void epiphany_cgen_print_operand
138 (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
140 /* Main entry point for printing operands.
141 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
142 of dis-asm.h on cgen.h.
144 This function is basically just a big switch statement. Earlier versions
145 used tables to look up the function to use, but
146 - if the table contains both assembler and disassembler functions then
147 the disassembler contains much of the assembler and vice-versa,
148 - there's a lot of inlining possibilities as things grow,
149 - using a switch statement avoids the function call overhead.
151 This function could be moved into `print_insn_normal', but keeping it
152 separate makes clear the interface between `print_insn_normal' and each of
156 epiphany_cgen_print_operand (CGEN_CPU_DESC cd,
160 void const *attrs ATTRIBUTE_UNUSED,
164 disassemble_info *info = (disassemble_info *) xinfo;
168 case EPIPHANY_OPERAND_DIRECTION :
169 print_postindex (cd, info, fields->f_addsubx, 0, pc, length);
171 case EPIPHANY_OPERAND_DISP11 :
172 print_uimm_not_reg (cd, info, fields->f_disp11, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
174 case EPIPHANY_OPERAND_DISP3 :
175 print_normal (cd, info, fields->f_disp3, 0, pc, length);
177 case EPIPHANY_OPERAND_DPMI :
178 print_postindex (cd, info, fields->f_subd, 0, pc, length);
180 case EPIPHANY_OPERAND_FRD :
181 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
183 case EPIPHANY_OPERAND_FRD6 :
184 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
186 case EPIPHANY_OPERAND_FRM :
187 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
189 case EPIPHANY_OPERAND_FRM6 :
190 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
192 case EPIPHANY_OPERAND_FRN :
193 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
195 case EPIPHANY_OPERAND_FRN6 :
196 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
198 case EPIPHANY_OPERAND_IMM16 :
199 print_address (cd, info, fields->f_imm16, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
201 case EPIPHANY_OPERAND_IMM8 :
202 print_address (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_RELAX), pc, length);
204 case EPIPHANY_OPERAND_RD :
205 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
207 case EPIPHANY_OPERAND_RD6 :
208 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
210 case EPIPHANY_OPERAND_RM :
211 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
213 case EPIPHANY_OPERAND_RM6 :
214 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
216 case EPIPHANY_OPERAND_RN :
217 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
219 case EPIPHANY_OPERAND_RN6 :
220 print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
222 case EPIPHANY_OPERAND_SD :
223 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd, 0);
225 case EPIPHANY_OPERAND_SD6 :
226 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
228 case EPIPHANY_OPERAND_SDDMA :
229 print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
231 case EPIPHANY_OPERAND_SDMEM :
232 print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
234 case EPIPHANY_OPERAND_SDMESH :
235 print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
237 case EPIPHANY_OPERAND_SHIFT :
238 print_normal (cd, info, fields->f_shift, 0, pc, length);
240 case EPIPHANY_OPERAND_SIMM11 :
241 print_simm_not_reg (cd, info, fields->f_sdisp11, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
243 case EPIPHANY_OPERAND_SIMM24 :
244 print_address (cd, info, fields->f_simm24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
246 case EPIPHANY_OPERAND_SIMM3 :
247 print_simm_not_reg (cd, info, fields->f_sdisp3, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX), pc, length);
249 case EPIPHANY_OPERAND_SIMM8 :
250 print_address (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
252 case EPIPHANY_OPERAND_SN :
253 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn, 0);
255 case EPIPHANY_OPERAND_SN6 :
256 print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
258 case EPIPHANY_OPERAND_SNDMA :
259 print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
261 case EPIPHANY_OPERAND_SNMEM :
262 print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
264 case EPIPHANY_OPERAND_SNMESH :
265 print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
267 case EPIPHANY_OPERAND_SWI_NUM :
268 print_uimm_not_reg (cd, info, fields->f_trap_num, 0, pc, length);
270 case EPIPHANY_OPERAND_TRAPNUM6 :
271 print_normal (cd, info, fields->f_trap_num, 0, pc, length);
275 /* xgettext:c-format */
276 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
282 cgen_print_fn * const epiphany_cgen_print_handlers[] =
289 epiphany_cgen_init_dis (CGEN_CPU_DESC cd)
291 epiphany_cgen_init_opcode_table (cd);
292 epiphany_cgen_init_ibld_table (cd);
293 cd->print_handlers = & epiphany_cgen_print_handlers[0];
294 cd->print_operand = epiphany_cgen_print_operand;
298 /* Default print handler. */
301 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
305 bfd_vma pc ATTRIBUTE_UNUSED,
306 int length ATTRIBUTE_UNUSED)
308 disassemble_info *info = (disassemble_info *) dis_info;
310 /* Print the operand as directed by the attributes. */
311 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
312 ; /* nothing to do */
313 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
314 (*info->fprintf_func) (info->stream, "%ld", value);
316 (*info->fprintf_func) (info->stream, "0x%lx", value);
319 /* Default address handler. */
322 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
326 bfd_vma pc ATTRIBUTE_UNUSED,
327 int length ATTRIBUTE_UNUSED)
329 disassemble_info *info = (disassemble_info *) dis_info;
331 /* Print the operand as directed by the attributes. */
332 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
333 ; /* Nothing to do. */
334 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
335 (*info->print_address_func) (value, info);
336 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
337 (*info->print_address_func) (value, info);
338 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
339 (*info->fprintf_func) (info->stream, "%ld", (long) value);
341 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
344 /* Keyword print handler. */
347 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
349 CGEN_KEYWORD *keyword_table,
351 unsigned int attrs ATTRIBUTE_UNUSED)
353 disassemble_info *info = (disassemble_info *) dis_info;
354 const CGEN_KEYWORD_ENTRY *ke;
356 ke = cgen_keyword_lookup_value (keyword_table, value);
358 (*info->fprintf_func) (info->stream, "%s", ke->name);
360 (*info->fprintf_func) (info->stream, "???");
363 /* Default insn printer.
365 DIS_INFO is defined as `void *' so the disassembler needn't know anything
366 about disassemble_info. */
369 print_insn_normal (CGEN_CPU_DESC cd,
371 const CGEN_INSN *insn,
376 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
377 disassemble_info *info = (disassemble_info *) dis_info;
378 const CGEN_SYNTAX_CHAR_TYPE *syn;
380 CGEN_INIT_PRINT (cd);
382 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
384 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
386 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
389 if (CGEN_SYNTAX_CHAR_P (*syn))
391 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
395 /* We have an operand. */
396 epiphany_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
397 fields, CGEN_INSN_ATTRS (insn), pc, length);
401 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
403 Returns 0 if all is well, non-zero otherwise. */
406 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
408 disassemble_info *info,
411 CGEN_EXTRACT_INFO *ex_info,
412 unsigned long *insn_value)
414 int status = (*info->read_memory_func) (pc, buf, buflen, info);
418 (*info->memory_error_func) (status, pc, info);
422 ex_info->dis_info = info;
423 ex_info->valid = (1 << buflen) - 1;
424 ex_info->insn_bytes = buf;
426 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
430 /* Utility to print an insn.
431 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
432 The result is the size of the insn in bytes or zero for an unknown insn
433 or -1 if an error occurs fetching data (memory_error_func will have
437 print_insn (CGEN_CPU_DESC cd,
439 disassemble_info *info,
443 CGEN_INSN_INT insn_value;
444 const CGEN_INSN_LIST *insn_list;
445 CGEN_EXTRACT_INFO ex_info;
448 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
449 basesize = cd->base_insn_bitsize < buflen * 8 ?
450 cd->base_insn_bitsize : buflen * 8;
451 insn_value = cgen_get_insn_value (cd, buf, basesize);
454 /* Fill in ex_info fields like read_insn would. Don't actually call
455 read_insn, since the incoming buffer is already read (and possibly
456 modified a la m32r). */
457 ex_info.valid = (1 << buflen) - 1;
458 ex_info.dis_info = info;
459 ex_info.insn_bytes = buf;
461 /* The instructions are stored in hash lists.
462 Pick the first one and keep trying until we find the right one. */
464 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
465 while (insn_list != NULL)
467 const CGEN_INSN *insn = insn_list->insn;
470 unsigned long insn_value_cropped;
472 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
473 /* Not needed as insn shouldn't be in hash lists if not supported. */
474 /* Supported by this cpu? */
475 if (! epiphany_cgen_insn_supported (cd, insn))
477 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
482 /* Basic bit mask must be correct. */
483 /* ??? May wish to allow target to defer this check until the extract
486 /* Base size may exceed this instruction's size. Extract the
487 relevant part from the buffer. */
488 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
489 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
490 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
491 info->endian == BFD_ENDIAN_BIG);
493 insn_value_cropped = insn_value;
495 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
496 == CGEN_INSN_BASE_VALUE (insn))
498 /* Printing is handled in two passes. The first pass parses the
499 machine insn and extracts the fields. The second pass prints
502 /* Make sure the entire insn is loaded into insn_value, if it
504 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
505 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
507 unsigned long full_insn_value;
508 int rc = read_insn (cd, pc, info, buf,
509 CGEN_INSN_BITSIZE (insn) / 8,
510 & ex_info, & full_insn_value);
513 length = CGEN_EXTRACT_FN (cd, insn)
514 (cd, insn, &ex_info, full_insn_value, &fields, pc);
517 length = CGEN_EXTRACT_FN (cd, insn)
518 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
520 /* Length < 0 -> error. */
525 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
526 /* Length is in bits, result is in bytes. */
531 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
537 /* Default value for CGEN_PRINT_INSN.
538 The result is the size of the insn in bytes or zero for an unknown insn
539 or -1 if an error occured fetching bytes. */
541 #ifndef CGEN_PRINT_INSN
542 #define CGEN_PRINT_INSN default_print_insn
546 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
548 bfd_byte buf[CGEN_MAX_INSN_SIZE];
552 /* Attempt to read the base part of the insn. */
553 buflen = cd->base_insn_bitsize / 8;
554 status = (*info->read_memory_func) (pc, buf, buflen, info);
556 /* Try again with the minimum part, if min < base. */
557 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
559 buflen = cd->min_insn_bitsize / 8;
560 status = (*info->read_memory_func) (pc, buf, buflen, info);
565 (*info->memory_error_func) (status, pc, info);
569 return print_insn (cd, pc, info, buf, buflen);
573 Print one instruction from PC on INFO->STREAM.
574 Return the size of the instruction (in bytes). */
576 typedef struct cpu_desc_list
578 struct cpu_desc_list *next;
586 print_insn_epiphany (bfd_vma pc, disassemble_info *info)
588 static cpu_desc_list *cd_list = 0;
589 cpu_desc_list *cl = 0;
590 static CGEN_CPU_DESC cd = 0;
591 static CGEN_BITSET *prev_isa;
592 static int prev_mach;
593 static int prev_endian;
597 int endian = (info->endian == BFD_ENDIAN_BIG
599 : CGEN_ENDIAN_LITTLE);
600 enum bfd_architecture arch;
602 /* ??? gdb will set mach but leave the architecture as "unknown" */
603 #ifndef CGEN_BFD_ARCH
604 #define CGEN_BFD_ARCH bfd_arch_epiphany
607 if (arch == bfd_arch_unknown)
608 arch = CGEN_BFD_ARCH;
610 /* There's no standard way to compute the machine or isa number
611 so we leave it to the target. */
612 #ifdef CGEN_COMPUTE_MACH
613 mach = CGEN_COMPUTE_MACH (info);
618 #ifdef CGEN_COMPUTE_ISA
620 static CGEN_BITSET *permanent_isa;
623 permanent_isa = cgen_bitset_create (MAX_ISAS);
625 cgen_bitset_clear (isa);
626 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
629 isa = info->insn_sets;
632 /* If we've switched cpu's, try to find a handle we've used before */
634 && (cgen_bitset_compare (isa, prev_isa) != 0
636 || endian != prev_endian))
639 for (cl = cd_list; cl; cl = cl->next)
641 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
643 cl->endian == endian)
652 /* If we haven't initialized yet, initialize the opcode table. */
655 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
656 const char *mach_name;
660 mach_name = arch_type->printable_name;
662 prev_isa = cgen_bitset_copy (isa);
664 prev_endian = endian;
665 cd = epiphany_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
666 CGEN_CPU_OPEN_BFDMACH, mach_name,
667 CGEN_CPU_OPEN_ENDIAN, prev_endian,
672 /* Save this away for future reference. */
673 cl = xmalloc (sizeof (struct cpu_desc_list));
681 epiphany_cgen_init_dis (cd);
684 /* We try to have as much common code as possible.
685 But at this point some targets need to take over. */
686 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
687 but if not possible try to move this hook elsewhere rather than
689 length = CGEN_PRINT_INSN (cd, pc, info);
695 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
696 return cd->default_insn_bitsize / 8;