PR 10263
[deliverable/binutils-gdb.git] / include / dis-asm.h
1 /* Interface between the opcode library and its callers.
2
3 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
4 Free Software Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor,
19 Boston, MA 02110-1301, USA.
20
21 Written by Cygnus Support, 1993.
22
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
29 #define DIS_ASM_H
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 #include <stdio.h>
36 #include "bfd.h"
37
38 typedef int (*fprintf_ftype) (void *, const char*, ...) /*ATTRIBUTE_FPTR_PRINTF_2*/;
39
40 enum dis_insn_type
41 {
42 dis_noninsn, /* Not a valid instruction. */
43 dis_nonbranch, /* Not a branch instruction. */
44 dis_branch, /* Unconditional branch. */
45 dis_condbranch, /* Conditional branch. */
46 dis_jsr, /* Jump to subroutine. */
47 dis_condjsr, /* Conditional jump to subroutine. */
48 dis_dref, /* Data reference instruction. */
49 dis_dref2 /* Two data references in instruction. */
50 };
51
52 /* This struct is passed into the instruction decoding routine,
53 and is passed back out into each callback. The various fields are used
54 for conveying information from your main routine into your callbacks,
55 for passing information into the instruction decoders (such as the
56 addresses of the callback functions), or for passing information
57 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 {
64 fprintf_ftype fprintf_func;
65 void *stream;
66 void *application_data;
67
68 /* Target description. We could replace this with a pointer to the bfd,
69 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;
75 /* The bfd_mach value. */
76 unsigned long mach;
77 /* 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
117 /* Use internally by the target specific disassembly code. */
118 void *private_data;
119
120 /* Function used to get bytes to disassemble. MEMADDR is the
121 address of the stuff to be disassembled, MYADDR is the address to
122 put the bytes in, and LENGTH is the number of bytes to read.
123 INFO is a pointer to this struct.
124 Returns an errno value or 0 for success. */
125 int (*read_memory_func)
126 (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
127 struct disassemble_info *info);
128
129 /* Function which should be called if we get an error that we can't
130 recover from. STATUS is the errno value from read_memory_func and
131 MEMADDR is the address that we were trying to read. INFO is a
132 pointer to this struct. */
133 void (*memory_error_func)
134 (int status, bfd_vma memaddr, struct disassemble_info *info);
135
136 /* Function called to print ADDR. */
137 void (*print_address_func)
138 (bfd_vma addr, struct disassemble_info *info);
139
140 /* Function called to determine if there is a symbol at the given ADDR.
141 If there is, the function returns 1, otherwise it returns 0.
142 This is used by ports which support an overlay manager where
143 the overlay number is held in the top part of an address. In
144 some circumstances we want to include the overlay number in the
145 address, (normally because there is a symbol associated with
146 that address), but sometimes we want to mask out the overlay bits. */
147 int (* symbol_at_address_func)
148 (bfd_vma addr, struct disassemble_info * info);
149
150 /* Function called to check if a SYMBOL is can be displayed to the user.
151 This is used by some ports that want to hide special symbols when
152 displaying debugging outout. */
153 bfd_boolean (* symbol_is_valid)
154 (asymbol *, struct disassemble_info * info);
155
156 /* These are for buffer_read_memory. */
157 bfd_byte *buffer;
158 bfd_vma buffer_vma;
159 unsigned int buffer_length;
160
161 /* This variable may be set by the instruction decoder. It suggests
162 the number of bytes objdump should display on a single line. If
163 the instruction decoder sets this, it should always set it to
164 the same value in order to get reasonable looking output. */
165 int bytes_per_line;
166
167 /* The next two variables control the way objdump displays the raw data. */
168 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
169 /* output will look like this:
170 00: 00000000 00000000
171 with the chunks displayed according to "display_endian". */
172 int bytes_per_chunk;
173 enum bfd_endian display_endian;
174
175 /* Number of octets per incremented target address
176 Normally one, but some DSPs have byte sizes of 16 or 32 bits. */
177 unsigned int octets_per_byte;
178
179 /* The number of zeroes we want to see at the end of a section before we
180 start skipping them. */
181 unsigned int skip_zeroes;
182
183 /* The number of zeroes to skip at the end of a section. If the number
184 of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES,
185 they will be disassembled. If there are fewer than
186 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
187 attempt to avoid disassembling zeroes inserted by section
188 alignment. */
189 unsigned int skip_zeroes_at_end;
190
191 /* Whether the disassembler always needs the relocations. */
192 bfd_boolean disassembler_needs_relocs;
193
194 /* Results from instruction decoders. Not all decoders yet support
195 this information. This info is set each time an instruction is
196 decoded, and is only valid for the last such instruction.
197
198 To determine whether this decoder supports this information, set
199 insn_info_valid to 0, decode an instruction, then check it. */
200
201 char insn_info_valid; /* Branch info has been set. */
202 char branch_delay_insns; /* How many sequential insn's will run before
203 a branch takes effect. (0 = normal) */
204 char data_size; /* Size of data reference in insn, in bytes */
205 enum dis_insn_type insn_type; /* Type of instruction */
206 bfd_vma target; /* Target address of branch or dref, if known;
207 zero if unknown. */
208 bfd_vma target2; /* Second target address for dref2 */
209
210 /* Command line options specific to the target disassembler. */
211 char * disassembler_options;
212
213 } disassemble_info;
214
215 \f
216 /* Standard disassemblers. Disassemble one instruction at the given
217 target address. Return number of octets processed. */
218 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
219
220 extern int print_insn_alpha (bfd_vma, disassemble_info *);
221 extern int print_insn_avr (bfd_vma, disassemble_info *);
222 extern int print_insn_bfin (bfd_vma, disassemble_info *);
223 extern int print_insn_big_arm (bfd_vma, disassemble_info *);
224 extern int print_insn_big_mips (bfd_vma, disassemble_info *);
225 extern int print_insn_big_or32 (bfd_vma, disassemble_info *);
226 extern int print_insn_big_powerpc (bfd_vma, disassemble_info *);
227 extern int print_insn_big_score (bfd_vma, disassemble_info *);
228 extern int print_insn_cr16 (bfd_vma, disassemble_info *);
229 extern int print_insn_crx (bfd_vma, disassemble_info *);
230 extern int print_insn_d10v (bfd_vma, disassemble_info *);
231 extern int print_insn_d30v (bfd_vma, disassemble_info *);
232 extern int print_insn_dlx (bfd_vma, disassemble_info *);
233 extern int print_insn_fr30 (bfd_vma, disassemble_info *);
234 extern int print_insn_frv (bfd_vma, disassemble_info *);
235 extern int print_insn_h8300 (bfd_vma, disassemble_info *);
236 extern int print_insn_h8300h (bfd_vma, disassemble_info *);
237 extern int print_insn_h8300s (bfd_vma, disassemble_info *);
238 extern int print_insn_h8500 (bfd_vma, disassemble_info *);
239 extern int print_insn_hppa (bfd_vma, disassemble_info *);
240 extern int print_insn_i370 (bfd_vma, disassemble_info *);
241 extern int print_insn_i386 (bfd_vma, disassemble_info *);
242 extern int print_insn_i386_att (bfd_vma, disassemble_info *);
243 extern int print_insn_i386_intel (bfd_vma, disassemble_info *);
244 extern int print_insn_i860 (bfd_vma, disassemble_info *);
245 extern int print_insn_i960 (bfd_vma, disassemble_info *);
246 extern int print_insn_ia64 (bfd_vma, disassemble_info *);
247 extern int print_insn_ip2k (bfd_vma, disassemble_info *);
248 extern int print_insn_iq2000 (bfd_vma, disassemble_info *);
249 extern int print_insn_little_arm (bfd_vma, disassemble_info *);
250 extern int print_insn_little_mips (bfd_vma, disassemble_info *);
251 extern int print_insn_little_or32 (bfd_vma, disassemble_info *);
252 extern int print_insn_little_powerpc (bfd_vma, disassemble_info *);
253 extern int print_insn_little_score (bfd_vma, disassemble_info *);
254 extern int print_insn_lm32 (bfd_vma, disassemble_info *);
255 extern int print_insn_m32c (bfd_vma, disassemble_info *);
256 extern int print_insn_m32r (bfd_vma, disassemble_info *);
257 extern int print_insn_m68hc11 (bfd_vma, disassemble_info *);
258 extern int print_insn_m68hc12 (bfd_vma, disassemble_info *);
259 extern int print_insn_m68k (bfd_vma, disassemble_info *);
260 extern int print_insn_m88k (bfd_vma, disassemble_info *);
261 extern int print_insn_maxq_big (bfd_vma, disassemble_info *);
262 extern int print_insn_maxq_little (bfd_vma, disassemble_info *);
263 extern int print_insn_mcore (bfd_vma, disassemble_info *);
264 extern int print_insn_mep (bfd_vma, disassemble_info *);
265 extern int print_insn_mmix (bfd_vma, disassemble_info *);
266 extern int print_insn_mn10200 (bfd_vma, disassemble_info *);
267 extern int print_insn_mn10300 (bfd_vma, disassemble_info *);
268 extern int print_insn_moxie (bfd_vma, disassemble_info *);
269 extern int print_insn_msp430 (bfd_vma, disassemble_info *);
270 extern int print_insn_mt (bfd_vma, disassemble_info *);
271 extern int print_insn_ns32k (bfd_vma, disassemble_info *);
272 extern int print_insn_openrisc (bfd_vma, disassemble_info *);
273 extern int print_insn_pdp11 (bfd_vma, disassemble_info *);
274 extern int print_insn_pj (bfd_vma, disassemble_info *);
275 extern int print_insn_rs6000 (bfd_vma, disassemble_info *);
276 extern int print_insn_s390 (bfd_vma, disassemble_info *);
277 extern int print_insn_sh (bfd_vma, disassemble_info *);
278 extern int print_insn_sh64 (bfd_vma, disassemble_info *);
279 extern int print_insn_sh64x_media (bfd_vma, disassemble_info *);
280 extern int print_insn_sparc (bfd_vma, disassemble_info *);
281 extern int print_insn_spu (bfd_vma, disassemble_info *);
282 extern int print_insn_tic30 (bfd_vma, disassemble_info *);
283 extern int print_insn_tic4x (bfd_vma, disassemble_info *);
284 extern int print_insn_tic54x (bfd_vma, disassemble_info *);
285 extern int print_insn_tic80 (bfd_vma, disassemble_info *);
286 extern int print_insn_v850 (bfd_vma, disassemble_info *);
287 extern int print_insn_vax (bfd_vma, disassemble_info *);
288 extern int print_insn_w65 (bfd_vma, disassemble_info *);
289 extern int print_insn_xc16x (bfd_vma, disassemble_info *);
290 extern int print_insn_xstormy16 (bfd_vma, disassemble_info *);
291 extern int print_insn_xtensa (bfd_vma, disassemble_info *);
292 extern int print_insn_z80 (bfd_vma, disassemble_info *);
293 extern int print_insn_z8001 (bfd_vma, disassemble_info *);
294 extern int print_insn_z8002 (bfd_vma, disassemble_info *);
295
296 extern disassembler_ftype arc_get_disassembler (void *);
297 extern disassembler_ftype cris_get_disassembler (bfd *);
298
299 extern void print_i386_disassembler_options (FILE *);
300 extern void print_mips_disassembler_options (FILE *);
301 extern void print_ppc_disassembler_options (FILE *);
302 extern void print_arm_disassembler_options (FILE *);
303 extern void parse_arm_disassembler_option (char *);
304 extern void print_s390_disassembler_options (FILE *);
305 extern int get_arm_regname_num_options (void);
306 extern int set_arm_regname_option (int);
307 extern int get_arm_regnames (int, const char **, const char **, const char *const **);
308 extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
309
310 /* Fetch the disassembler for a given BFD, if that support is available. */
311 extern disassembler_ftype disassembler (bfd *);
312
313 /* Amend the disassemble_info structure as necessary for the target architecture.
314 Should only be called after initialising the info->arch field. */
315 extern void disassemble_init_for_target (struct disassemble_info * info);
316
317 /* Document any target specific options available from the disassembler. */
318 extern void disassembler_usage (FILE *);
319
320 \f
321 /* This block of definitions is for particular callers who read instructions
322 into a buffer before calling the instruction decoder. */
323
324 /* Here is a function which callers may wish to use for read_memory_func.
325 It gets bytes from a buffer. */
326 extern int buffer_read_memory
327 (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
328
329 /* This function goes with buffer_read_memory.
330 It prints a message using info->fprintf_func and info->stream. */
331 extern void perror_memory (int, bfd_vma, struct disassemble_info *);
332
333
334 /* Just print the address in hex. This is included for completeness even
335 though both GDB and objdump provide their own (to print symbolic
336 addresses). */
337 extern void generic_print_address
338 (bfd_vma, struct disassemble_info *);
339
340 /* Always true. */
341 extern int generic_symbol_at_address
342 (bfd_vma, struct disassemble_info *);
343
344 /* Also always true. */
345 extern bfd_boolean generic_symbol_is_valid
346 (asymbol *, struct disassemble_info *);
347
348 /* Method to initialize a disassemble_info struct. This should be
349 called by all applications creating such a struct. */
350 extern void init_disassemble_info (struct disassemble_info *info, void *stream,
351 fprintf_ftype fprintf_func);
352
353 /* For compatibility with existing code. */
354 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
355 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
356 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
357 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
358
359
360 #ifdef __cplusplus
361 }
362 #endif
363
364 #endif /* ! defined (DIS_ASM_H) */
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