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) 1996-2018 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 "xstormy16-desc.h"
37 #include "xstormy16-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 xstormy16_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 xstormy16_cgen_print_operand (CGEN_CPU_DESC cd,
85 void const *attrs ATTRIBUTE_UNUSED,
89 disassemble_info *info = (disassemble_info *) xinfo;
93 case XSTORMY16_OPERAND_RB :
94 print_keyword (cd, info, & xstormy16_cgen_opval_gr_Rb_names, fields->f_Rb, 0);
96 case XSTORMY16_OPERAND_RBJ :
97 print_keyword (cd, info, & xstormy16_cgen_opval_gr_Rb_names, fields->f_Rbj, 0);
99 case XSTORMY16_OPERAND_RD :
100 print_keyword (cd, info, & xstormy16_cgen_opval_gr_names, fields->f_Rd, 0);
102 case XSTORMY16_OPERAND_RDM :
103 print_keyword (cd, info, & xstormy16_cgen_opval_gr_names, fields->f_Rdm, 0);
105 case XSTORMY16_OPERAND_RM :
106 print_keyword (cd, info, & xstormy16_cgen_opval_gr_names, fields->f_Rm, 0);
108 case XSTORMY16_OPERAND_RS :
109 print_keyword (cd, info, & xstormy16_cgen_opval_gr_names, fields->f_Rs, 0);
111 case XSTORMY16_OPERAND_ABS24 :
112 print_normal (cd, info, fields->f_abs24, 0|(1<<CGEN_OPERAND_ABS_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
114 case XSTORMY16_OPERAND_BCOND2 :
115 print_keyword (cd, info, & xstormy16_cgen_opval_h_branchcond, fields->f_op2, 0);
117 case XSTORMY16_OPERAND_BCOND5 :
118 print_keyword (cd, info, & xstormy16_cgen_opval_h_branchcond, fields->f_op5, 0);
120 case XSTORMY16_OPERAND_HMEM8 :
121 print_normal (cd, info, fields->f_hmem8, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
123 case XSTORMY16_OPERAND_IMM12 :
124 print_normal (cd, info, fields->f_imm12, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
126 case XSTORMY16_OPERAND_IMM16 :
127 print_normal (cd, info, fields->f_imm16, 0|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
129 case XSTORMY16_OPERAND_IMM2 :
130 print_normal (cd, info, fields->f_imm2, 0, pc, length);
132 case XSTORMY16_OPERAND_IMM3 :
133 print_normal (cd, info, fields->f_imm3, 0, pc, length);
135 case XSTORMY16_OPERAND_IMM3B :
136 print_normal (cd, info, fields->f_imm3b, 0, pc, length);
138 case XSTORMY16_OPERAND_IMM4 :
139 print_normal (cd, info, fields->f_imm4, 0, pc, length);
141 case XSTORMY16_OPERAND_IMM8 :
142 print_normal (cd, info, fields->f_imm8, 0, pc, length);
144 case XSTORMY16_OPERAND_IMM8SMALL :
145 print_normal (cd, info, fields->f_imm8, 0, pc, length);
147 case XSTORMY16_OPERAND_LMEM8 :
148 print_normal (cd, info, fields->f_lmem8, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
150 case XSTORMY16_OPERAND_REL12 :
151 print_normal (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
153 case XSTORMY16_OPERAND_REL12A :
154 print_normal (cd, info, fields->f_rel12a, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
156 case XSTORMY16_OPERAND_REL8_2 :
157 print_normal (cd, info, fields->f_rel8_2, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
159 case XSTORMY16_OPERAND_REL8_4 :
160 print_normal (cd, info, fields->f_rel8_4, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
162 case XSTORMY16_OPERAND_WS2 :
163 print_keyword (cd, info, & xstormy16_cgen_opval_h_wordsize, fields->f_op2m, 0);
167 /* xgettext:c-format */
168 opcodes_error_handler
169 (_("internal error: unrecognized field %d while printing insn"),
175 cgen_print_fn * const xstormy16_cgen_print_handlers[] =
182 xstormy16_cgen_init_dis (CGEN_CPU_DESC cd)
184 xstormy16_cgen_init_opcode_table (cd);
185 xstormy16_cgen_init_ibld_table (cd);
186 cd->print_handlers = & xstormy16_cgen_print_handlers[0];
187 cd->print_operand = xstormy16_cgen_print_operand;
191 /* Default print handler. */
194 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
198 bfd_vma pc ATTRIBUTE_UNUSED,
199 int length ATTRIBUTE_UNUSED)
201 disassemble_info *info = (disassemble_info *) dis_info;
203 /* Print the operand as directed by the attributes. */
204 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
205 ; /* nothing to do */
206 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
207 (*info->fprintf_func) (info->stream, "%ld", value);
209 (*info->fprintf_func) (info->stream, "0x%lx", value);
212 /* Default address handler. */
215 print_address (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_PCREL_ADDR))
228 (*info->print_address_func) (value, info);
229 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
230 (*info->print_address_func) (value, info);
231 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
232 (*info->fprintf_func) (info->stream, "%ld", (long) value);
234 (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
237 /* Keyword print handler. */
240 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
242 CGEN_KEYWORD *keyword_table,
244 unsigned int attrs ATTRIBUTE_UNUSED)
246 disassemble_info *info = (disassemble_info *) dis_info;
247 const CGEN_KEYWORD_ENTRY *ke;
249 ke = cgen_keyword_lookup_value (keyword_table, value);
251 (*info->fprintf_func) (info->stream, "%s", ke->name);
253 (*info->fprintf_func) (info->stream, "???");
256 /* Default insn printer.
258 DIS_INFO is defined as `void *' so the disassembler needn't know anything
259 about disassemble_info. */
262 print_insn_normal (CGEN_CPU_DESC cd,
264 const CGEN_INSN *insn,
269 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
270 disassemble_info *info = (disassemble_info *) dis_info;
271 const CGEN_SYNTAX_CHAR_TYPE *syn;
273 CGEN_INIT_PRINT (cd);
275 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
277 if (CGEN_SYNTAX_MNEMONIC_P (*syn))
279 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
282 if (CGEN_SYNTAX_CHAR_P (*syn))
284 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
288 /* We have an operand. */
289 xstormy16_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
290 fields, CGEN_INSN_ATTRS (insn), pc, length);
294 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
296 Returns 0 if all is well, non-zero otherwise. */
299 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
301 disassemble_info *info,
304 CGEN_EXTRACT_INFO *ex_info,
305 unsigned long *insn_value)
307 int status = (*info->read_memory_func) (pc, buf, buflen, info);
311 (*info->memory_error_func) (status, pc, info);
315 ex_info->dis_info = info;
316 ex_info->valid = (1 << buflen) - 1;
317 ex_info->insn_bytes = buf;
319 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
323 /* Utility to print an insn.
324 BUF is the base part of the insn, target byte order, BUFLEN bytes long.
325 The result is the size of the insn in bytes or zero for an unknown insn
326 or -1 if an error occurs fetching data (memory_error_func will have
330 print_insn (CGEN_CPU_DESC cd,
332 disassemble_info *info,
336 CGEN_INSN_INT insn_value;
337 const CGEN_INSN_LIST *insn_list;
338 CGEN_EXTRACT_INFO ex_info;
341 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
342 basesize = cd->base_insn_bitsize < buflen * 8 ?
343 cd->base_insn_bitsize : buflen * 8;
344 insn_value = cgen_get_insn_value (cd, buf, basesize);
347 /* Fill in ex_info fields like read_insn would. Don't actually call
348 read_insn, since the incoming buffer is already read (and possibly
349 modified a la m32r). */
350 ex_info.valid = (1 << buflen) - 1;
351 ex_info.dis_info = info;
352 ex_info.insn_bytes = buf;
354 /* The instructions are stored in hash lists.
355 Pick the first one and keep trying until we find the right one. */
357 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
358 while (insn_list != NULL)
360 const CGEN_INSN *insn = insn_list->insn;
363 unsigned long insn_value_cropped;
365 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
366 /* Not needed as insn shouldn't be in hash lists if not supported. */
367 /* Supported by this cpu? */
368 if (! xstormy16_cgen_insn_supported (cd, insn))
370 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
375 /* Basic bit mask must be correct. */
376 /* ??? May wish to allow target to defer this check until the extract
379 /* Base size may exceed this instruction's size. Extract the
380 relevant part from the buffer. */
381 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
382 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
383 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
384 info->endian == BFD_ENDIAN_BIG);
386 insn_value_cropped = insn_value;
388 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
389 == CGEN_INSN_BASE_VALUE (insn))
391 /* Printing is handled in two passes. The first pass parses the
392 machine insn and extracts the fields. The second pass prints
395 /* Make sure the entire insn is loaded into insn_value, if it
397 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
398 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
400 unsigned long full_insn_value;
401 int rc = read_insn (cd, pc, info, buf,
402 CGEN_INSN_BITSIZE (insn) / 8,
403 & ex_info, & full_insn_value);
406 length = CGEN_EXTRACT_FN (cd, insn)
407 (cd, insn, &ex_info, full_insn_value, &fields, pc);
410 length = CGEN_EXTRACT_FN (cd, insn)
411 (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
413 /* Length < 0 -> error. */
418 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
419 /* Length is in bits, result is in bytes. */
424 insn_list = CGEN_DIS_NEXT_INSN (insn_list);
430 /* Default value for CGEN_PRINT_INSN.
431 The result is the size of the insn in bytes or zero for an unknown insn
432 or -1 if an error occured fetching bytes. */
434 #ifndef CGEN_PRINT_INSN
435 #define CGEN_PRINT_INSN default_print_insn
439 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
441 bfd_byte buf[CGEN_MAX_INSN_SIZE];
445 /* Attempt to read the base part of the insn. */
446 buflen = cd->base_insn_bitsize / 8;
447 status = (*info->read_memory_func) (pc, buf, buflen, info);
449 /* Try again with the minimum part, if min < base. */
450 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
452 buflen = cd->min_insn_bitsize / 8;
453 status = (*info->read_memory_func) (pc, buf, buflen, info);
458 (*info->memory_error_func) (status, pc, info);
462 return print_insn (cd, pc, info, buf, buflen);
466 Print one instruction from PC on INFO->STREAM.
467 Return the size of the instruction (in bytes). */
469 typedef struct cpu_desc_list
471 struct cpu_desc_list *next;
479 print_insn_xstormy16 (bfd_vma pc, disassemble_info *info)
481 static cpu_desc_list *cd_list = 0;
482 cpu_desc_list *cl = 0;
483 static CGEN_CPU_DESC cd = 0;
484 static CGEN_BITSET *prev_isa;
485 static int prev_mach;
486 static int prev_endian;
490 int endian = (info->endian == BFD_ENDIAN_BIG
492 : CGEN_ENDIAN_LITTLE);
493 enum bfd_architecture arch;
495 /* ??? gdb will set mach but leave the architecture as "unknown" */
496 #ifndef CGEN_BFD_ARCH
497 #define CGEN_BFD_ARCH bfd_arch_xstormy16
500 if (arch == bfd_arch_unknown)
501 arch = CGEN_BFD_ARCH;
503 /* There's no standard way to compute the machine or isa number
504 so we leave it to the target. */
505 #ifdef CGEN_COMPUTE_MACH
506 mach = CGEN_COMPUTE_MACH (info);
511 #ifdef CGEN_COMPUTE_ISA
513 static CGEN_BITSET *permanent_isa;
516 permanent_isa = cgen_bitset_create (MAX_ISAS);
518 cgen_bitset_clear (isa);
519 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
522 isa = info->insn_sets;
525 /* If we've switched cpu's, try to find a handle we've used before */
527 && (cgen_bitset_compare (isa, prev_isa) != 0
529 || endian != prev_endian))
532 for (cl = cd_list; cl; cl = cl->next)
534 if (cgen_bitset_compare (cl->isa, isa) == 0 &&
536 cl->endian == endian)
545 /* If we haven't initialized yet, initialize the opcode table. */
548 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
549 const char *mach_name;
553 mach_name = arch_type->printable_name;
555 prev_isa = cgen_bitset_copy (isa);
557 prev_endian = endian;
558 cd = xstormy16_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
559 CGEN_CPU_OPEN_BFDMACH, mach_name,
560 CGEN_CPU_OPEN_ENDIAN, prev_endian,
565 /* Save this away for future reference. */
566 cl = xmalloc (sizeof (struct cpu_desc_list));
574 xstormy16_cgen_init_dis (cd);
577 /* We try to have as much common code as possible.
578 But at this point some targets need to take over. */
579 /* ??? Some targets may need a hook elsewhere. Try to avoid this,
580 but if not possible try to move this hook elsewhere rather than
582 length = CGEN_PRINT_INSN (cd, pc, info);
588 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
589 return cd->default_insn_bitsize / 8;