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1 330 jeremybenn
/* Interface between the opcode library and its callers.
2
 
3
   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009, 2010
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   Free Software Foundation, Inc.
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6
   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
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11
   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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16
   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
18
   Foundation, Inc., 51 Franklin Street - Fifth Floor,
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   Boston, MA 02110-1301, USA.
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21
   Written by Cygnus Support, 1993.
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23
   The opcode library (libopcodes.a) provides instruction decoders for
24
   a large variety of instruction sets, callable with an identical
25
   interface, for making instruction-processing programs more independent
26
   of the instruction set being processed.  */
27
 
28
#ifndef DIS_ASM_H
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#define DIS_ASM_H
30
 
31
#ifdef __cplusplus
32
extern "C" {
33
#endif
34
 
35
#include <stdio.h>
36
#include "bfd.h"
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38
  typedef int (*fprintf_ftype) (void *, const char*, ...) /*ATTRIBUTE_FPTR_PRINTF_2*/;
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40
enum dis_insn_type
41
{
42
  dis_noninsn,                  /* Not a valid instruction.  */
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  dis_nonbranch,                /* Not a branch instruction.  */
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  dis_branch,                   /* Unconditional branch.  */
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  dis_condbranch,               /* Conditional branch.  */
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  dis_jsr,                      /* Jump to subroutine.  */
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  dis_condjsr,                  /* Conditional jump to subroutine.  */
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  dis_dref,                     /* Data reference instruction.  */
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  dis_dref2                     /* Two data references in instruction.  */
50
};
51
 
52
/* This struct is passed into the instruction decoding routine,
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   and is passed back out into each callback.  The various fields are used
54
   for conveying information from your main routine into your callbacks,
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   for passing information into the instruction decoders (such as the
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   addresses of the callback functions), or for passing information
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   back from the instruction decoders to their callers.
58
 
59
   It must be initialized before it is first passed; this can be done
60
   by hand, or using one of the initialization macros below.  */
61
 
62
typedef struct disassemble_info
63
{
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  fprintf_ftype fprintf_func;
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  void *stream;
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  void *application_data;
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68
  /* Target description.  We could replace this with a pointer to the bfd,
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     but that would require one.  There currently isn't any such requirement
70
     so to avoid introducing one we record these explicitly.  */
71
  /* The bfd_flavour.  This can be bfd_target_unknown_flavour.  */
72
  enum bfd_flavour flavour;
73
  /* The bfd_arch value.  */
74
  enum bfd_architecture arch;
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  /* The bfd_mach value.  */
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  unsigned long mach;
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  /* Endianness (for bi-endian cpus).  Mono-endian cpus can ignore this.  */
78
  enum bfd_endian endian;
79
  /* Endianness of code, for mixed-endian situations such as ARM BE8.  */
80
  enum bfd_endian endian_code;
81
  /* An arch/mach-specific bitmask of selected instruction subsets, mainly
82
     for processors with run-time-switchable instruction sets.  The default,
83
     zero, means that there is no constraint.  CGEN-based opcodes ports
84
     may use ISA_foo masks.  */
85
  void *insn_sets;
86
 
87
  /* Some targets need information about the current section to accurately
88
     display insns.  If this is NULL, the target disassembler function
89
     will have to make its best guess.  */
90
  asection *section;
91
 
92
  /* An array of pointers to symbols either at the location being disassembled
93
     or at the start of the function being disassembled.  The array is sorted
94
     so that the first symbol is intended to be the one used.  The others are
95
     present for any misc. purposes.  This is not set reliably, but if it is
96
     not NULL, it is correct.  */
97
  asymbol **symbols;
98
  /* Number of symbols in array.  */
99
  int num_symbols;
100
 
101
  /* Symbol table provided for targets that want to look at it.  This is
102
     used on Arm to find mapping symbols and determine Arm/Thumb code.  */
103
  asymbol **symtab;
104
  int symtab_pos;
105
  int symtab_size;
106
 
107
  /* For use by the disassembler.
108
     The top 16 bits are reserved for public use (and are documented here).
109
     The bottom 16 bits are for the internal use of the disassembler.  */
110
  unsigned long flags;
111
  /* Set if the disassembler has determined that there are one or more
112
     relocations associated with the instruction being disassembled.  */
113
#define INSN_HAS_RELOC   (1 << 31)
114
  /* Set if the user has requested the disassembly of data as well as code.  */
115
#define DISASSEMBLE_DATA (1 << 30)
116
  /* Set if the user has specifically set the machine type encoded in the
117
     mach field of this structure.  */
118
#define USER_SPECIFIED_MACHINE_TYPE (1 << 29)
119
 
120
  /* Use internally by the target specific disassembly code.  */
121
  void *private_data;
122
 
123
  /* Function used to get bytes to disassemble.  MEMADDR is the
124
     address of the stuff to be disassembled, MYADDR is the address to
125
     put the bytes in, and LENGTH is the number of bytes to read.
126
     INFO is a pointer to this struct.
127
     Returns an errno value or 0 for success.  */
128
  int (*read_memory_func)
129
    (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
130
     struct disassemble_info *dinfo);
131
 
132
  /* Function which should be called if we get an error that we can't
133
     recover from.  STATUS is the errno value from read_memory_func and
134
     MEMADDR is the address that we were trying to read.  INFO is a
135
     pointer to this struct.  */
136
  void (*memory_error_func)
137
    (int status, bfd_vma memaddr, struct disassemble_info *dinfo);
138
 
139
  /* Function called to print ADDR.  */
140
  void (*print_address_func)
141
    (bfd_vma addr, struct disassemble_info *dinfo);
142
 
143
  /* Function called to determine if there is a symbol at the given ADDR.
144
     If there is, the function returns 1, otherwise it returns 0.
145
     This is used by ports which support an overlay manager where
146
     the overlay number is held in the top part of an address.  In
147
     some circumstances we want to include the overlay number in the
148
     address, (normally because there is a symbol associated with
149
     that address), but sometimes we want to mask out the overlay bits.  */
150
  int (* symbol_at_address_func)
151
    (bfd_vma addr, struct disassemble_info *dinfo);
152
 
153
  /* Function called to check if a SYMBOL is can be displayed to the user.
154
     This is used by some ports that want to hide special symbols when
155
     displaying debugging outout.  */
156
  bfd_boolean (* symbol_is_valid)
157
    (asymbol *, struct disassemble_info *dinfo);
158
 
159
  /* These are for buffer_read_memory.  */
160
  bfd_byte *buffer;
161
  bfd_vma buffer_vma;
162
  unsigned int buffer_length;
163
 
164
  /* This variable may be set by the instruction decoder.  It suggests
165
      the number of bytes objdump should display on a single line.  If
166
      the instruction decoder sets this, it should always set it to
167
      the same value in order to get reasonable looking output.  */
168
  int bytes_per_line;
169
 
170
  /* The next two variables control the way objdump displays the raw data.  */
171
  /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
172
  /* output will look like this:
173
     00:   00000000 00000000
174
     with the chunks displayed according to "display_endian". */
175
  int bytes_per_chunk;
176
  enum bfd_endian display_endian;
177
 
178
  /* Number of octets per incremented target address
179
     Normally one, but some DSPs have byte sizes of 16 or 32 bits.  */
180
  unsigned int octets_per_byte;
181
 
182
  /* The number of zeroes we want to see at the end of a section before we
183
     start skipping them.  */
184
  unsigned int skip_zeroes;
185
 
186
  /* The number of zeroes to skip at the end of a section.  If the number
187
     of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES,
188
     they will be disassembled.  If there are fewer than
189
     SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
190
     attempt to avoid disassembling zeroes inserted by section
191
     alignment.  */
192
  unsigned int skip_zeroes_at_end;
193
 
194
  /* Whether the disassembler always needs the relocations.  */
195
  bfd_boolean disassembler_needs_relocs;
196
 
197
  /* Results from instruction decoders.  Not all decoders yet support
198
     this information.  This info is set each time an instruction is
199
     decoded, and is only valid for the last such instruction.
200
 
201
     To determine whether this decoder supports this information, set
202
     insn_info_valid to 0, decode an instruction, then check it.  */
203
 
204
  char insn_info_valid;         /* Branch info has been set. */
205
  char branch_delay_insns;      /* How many sequential insn's will run before
206
                                   a branch takes effect.  (0 = normal) */
207
  char data_size;               /* Size of data reference in insn, in bytes */
208
  enum dis_insn_type insn_type; /* Type of instruction */
209
  bfd_vma target;               /* Target address of branch or dref, if known;
210
                                   zero if unknown.  */
211
  bfd_vma target2;              /* Second target address for dref2 */
212
 
213
  /* Command line options specific to the target disassembler.  */
214
  char * disassembler_options;
215
 
216
} disassemble_info;
217
 
218
 
219
/* Standard disassemblers.  Disassemble one instruction at the given
220
   target address.  Return number of octets processed.  */
221
typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
222
 
223
extern int print_insn_alpha             (bfd_vma, disassemble_info *);
224
extern int print_insn_avr               (bfd_vma, disassemble_info *);
225
extern int print_insn_bfin              (bfd_vma, disassemble_info *);
226
extern int print_insn_big_arm           (bfd_vma, disassemble_info *);
227
extern int print_insn_big_mips          (bfd_vma, disassemble_info *);
228
extern int print_insn_big_or32          (bfd_vma, disassemble_info *);
229
extern int print_insn_big_powerpc       (bfd_vma, disassemble_info *);
230
extern int print_insn_big_score         (bfd_vma, disassemble_info *);
231
extern int print_insn_cr16              (bfd_vma, disassemble_info *);
232
extern int print_insn_crx               (bfd_vma, disassemble_info *);
233
extern int print_insn_d10v              (bfd_vma, disassemble_info *);
234
extern int print_insn_d30v              (bfd_vma, disassemble_info *);
235
extern int print_insn_dlx               (bfd_vma, disassemble_info *);
236
extern int print_insn_fr30              (bfd_vma, disassemble_info *);
237
extern int print_insn_frv               (bfd_vma, disassemble_info *);
238
extern int print_insn_h8300             (bfd_vma, disassemble_info *);
239
extern int print_insn_h8300h            (bfd_vma, disassemble_info *);
240
extern int print_insn_h8300s            (bfd_vma, disassemble_info *);
241
extern int print_insn_h8500             (bfd_vma, disassemble_info *);
242
extern int print_insn_hppa              (bfd_vma, disassemble_info *);
243
extern int print_insn_i370              (bfd_vma, disassemble_info *);
244
extern int print_insn_i386              (bfd_vma, disassemble_info *);
245
extern int print_insn_i386_att          (bfd_vma, disassemble_info *);
246
extern int print_insn_i386_intel        (bfd_vma, disassemble_info *);
247
extern int print_insn_i860              (bfd_vma, disassemble_info *);
248
extern int print_insn_i960              (bfd_vma, disassemble_info *);
249
extern int print_insn_ia64              (bfd_vma, disassemble_info *);
250
extern int print_insn_ip2k              (bfd_vma, disassemble_info *);
251
extern int print_insn_iq2000            (bfd_vma, disassemble_info *);
252
extern int print_insn_little_arm        (bfd_vma, disassemble_info *);
253
extern int print_insn_little_mips       (bfd_vma, disassemble_info *);
254
extern int print_insn_little_or32       (bfd_vma, disassemble_info *);
255
extern int print_insn_little_powerpc    (bfd_vma, disassemble_info *);
256
extern int print_insn_little_score      (bfd_vma, disassemble_info *);
257
extern int print_insn_lm32              (bfd_vma, disassemble_info *);
258
extern int print_insn_m32c              (bfd_vma, disassemble_info *);
259
extern int print_insn_m32r              (bfd_vma, disassemble_info *);
260
extern int print_insn_m68hc11           (bfd_vma, disassemble_info *);
261
extern int print_insn_m68hc12           (bfd_vma, disassemble_info *);
262
extern int print_insn_m68k              (bfd_vma, disassemble_info *);
263
extern int print_insn_m88k              (bfd_vma, disassemble_info *);
264
extern int print_insn_mcore             (bfd_vma, disassemble_info *);
265
extern int print_insn_mep               (bfd_vma, disassemble_info *);
266
extern int print_insn_microblaze        (bfd_vma, disassemble_info *);
267
extern int print_insn_mmix              (bfd_vma, disassemble_info *);
268
extern int print_insn_mn10200           (bfd_vma, disassemble_info *);
269
extern int print_insn_mn10300           (bfd_vma, disassemble_info *);
270
extern int print_insn_moxie             (bfd_vma, disassemble_info *);
271
extern int print_insn_msp430            (bfd_vma, disassemble_info *);
272
extern int print_insn_mt                (bfd_vma, disassemble_info *);
273
extern int print_insn_ns32k             (bfd_vma, disassemble_info *);
274
extern int print_insn_openrisc          (bfd_vma, disassemble_info *);
275
extern int print_insn_pdp11             (bfd_vma, disassemble_info *);
276
extern int print_insn_pj                (bfd_vma, disassemble_info *);
277
extern int print_insn_rs6000            (bfd_vma, disassemble_info *);
278
extern int print_insn_s390              (bfd_vma, disassemble_info *);
279
extern int print_insn_sh                (bfd_vma, disassemble_info *);
280
extern int print_insn_sh64              (bfd_vma, disassemble_info *);
281
extern int print_insn_sh64x_media       (bfd_vma, disassemble_info *);
282
extern int print_insn_sparc             (bfd_vma, disassemble_info *);
283
extern int print_insn_spu               (bfd_vma, disassemble_info *);
284
extern int print_insn_tic30             (bfd_vma, disassemble_info *);
285
extern int print_insn_tic4x             (bfd_vma, disassemble_info *);
286
extern int print_insn_tic54x            (bfd_vma, disassemble_info *);
287
extern int print_insn_tic6x             (bfd_vma, disassemble_info *);
288
extern int print_insn_tic80             (bfd_vma, disassemble_info *);
289
extern int print_insn_v850              (bfd_vma, disassemble_info *);
290
extern int print_insn_vax               (bfd_vma, disassemble_info *);
291
extern int print_insn_w65               (bfd_vma, disassemble_info *);
292
extern int print_insn_xc16x             (bfd_vma, disassemble_info *);
293
extern int print_insn_xstormy16         (bfd_vma, disassemble_info *);
294
extern int print_insn_xtensa            (bfd_vma, disassemble_info *);
295
extern int print_insn_z80               (bfd_vma, disassemble_info *);
296
extern int print_insn_z8001             (bfd_vma, disassemble_info *);
297
extern int print_insn_z8002             (bfd_vma, disassemble_info *);
298
extern int print_insn_rx                (bfd_vma, disassemble_info *);
299
 
300
extern disassembler_ftype arc_get_disassembler (void *);
301
extern disassembler_ftype cris_get_disassembler (bfd *);
302
 
303
extern void print_i386_disassembler_options (FILE *);
304
extern void print_mips_disassembler_options (FILE *);
305
extern void print_ppc_disassembler_options (FILE *);
306
extern void print_arm_disassembler_options (FILE *);
307
extern void parse_arm_disassembler_option (char *);
308
extern void print_s390_disassembler_options (FILE *);
309
extern int  get_arm_regname_num_options (void);
310
extern int  set_arm_regname_option (int);
311
extern int  get_arm_regnames (int, const char **, const char **, const char *const **);
312
extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
313
 
314
/* Fetch the disassembler for a given BFD, if that support is available.  */
315
extern disassembler_ftype disassembler (bfd *);
316
 
317
/* Amend the disassemble_info structure as necessary for the target architecture.
318
   Should only be called after initialising the info->arch field.  */
319
extern void disassemble_init_for_target (struct disassemble_info * dinfo);
320
 
321
/* Document any target specific options available from the disassembler.  */
322
extern void disassembler_usage (FILE *);
323
 
324
 
325
/* This block of definitions is for particular callers who read instructions
326
   into a buffer before calling the instruction decoder.  */
327
 
328
/* Here is a function which callers may wish to use for read_memory_func.
329
   It gets bytes from a buffer.  */
330
extern int buffer_read_memory
331
  (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
332
 
333
/* This function goes with buffer_read_memory.
334
   It prints a message using info->fprintf_func and info->stream.  */
335
extern void perror_memory (int, bfd_vma, struct disassemble_info *);
336
 
337
 
338
/* Just print the address in hex.  This is included for completeness even
339
   though both GDB and objdump provide their own (to print symbolic
340
   addresses).  */
341
extern void generic_print_address
342
  (bfd_vma, struct disassemble_info *);
343
 
344
/* Always true.  */
345
extern int generic_symbol_at_address
346
  (bfd_vma, struct disassemble_info *);
347
 
348
/* Also always true.  */
349
extern bfd_boolean generic_symbol_is_valid
350
  (asymbol *, struct disassemble_info *);
351
 
352
/* Method to initialize a disassemble_info struct.  This should be
353
   called by all applications creating such a struct.  */
354
extern void init_disassemble_info (struct disassemble_info *dinfo, void *stream,
355
                                   fprintf_ftype fprintf_func);
356
 
357
/* For compatibility with existing code.  */
358
#define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
359
  init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
360
#define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
361
  init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
362
 
363
 
364
#ifdef __cplusplus
365
}
366
#endif
367
 
368
#endif /* ! defined (DIS_ASM_H) */

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