source: trunk/src/binutils/include/dis-asm.h@ 490

Last change on this file since 490 was 10, checked in by bird, 23 years ago

Initial revision
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1/* Interface between the opcode library and its callers.
2
3 Copyright 2001 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
19
20 Written by Cygnus Support, 1993.
21
22 The opcode library (libopcodes.a) provides instruction decoders for
23 a large variety of instruction sets, callable with an identical
24 interface, for making instruction-processing programs more independent
25 of the instruction set being processed. */
26
27#ifndef DIS_ASM_H
28#define DIS_ASM_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34#include <stdio.h>
35#include "bfd.h"
36
37typedef int (*fprintf_ftype) PARAMS((PTR, const char*, ...));
38
39enum dis_insn_type {
40 dis_noninsn, /* Not a valid instruction */
41 dis_nonbranch, /* Not a branch instruction */
42 dis_branch, /* Unconditional branch */
43 dis_condbranch, /* Conditional branch */
44 dis_jsr, /* Jump to subroutine */
45 dis_condjsr, /* Conditional jump to subroutine */
46 dis_dref, /* Data reference instruction */
47 dis_dref2 /* Two data references in instruction */
48};
49
50/* This struct is passed into the instruction decoding routine,
51 and is passed back out into each callback. The various fields are used
52 for conveying information from your main routine into your callbacks,
53 for passing information into the instruction decoders (such as the
54 addresses of the callback functions), or for passing information
55 back from the instruction decoders to their callers.
56
57 It must be initialized before it is first passed; this can be done
58 by hand, or using one of the initialization macros below. */
59
60typedef struct disassemble_info {
61 fprintf_ftype fprintf_func;
62 PTR stream;
63 PTR application_data;
64
65 /* Target description. We could replace this with a pointer to the bfd,
66 but that would require one. There currently isn't any such requirement
67 so to avoid introducing one we record these explicitly. */
68 /* The bfd_flavour. This can be bfd_target_unknown_flavour. */
69 enum bfd_flavour flavour;
70 /* The bfd_arch value. */
71 enum bfd_architecture arch;
72 /* The bfd_mach value. */
73 unsigned long mach;
74 /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
75 enum bfd_endian endian;
76
77 /* Some targets need information about the current section to accurately
78 display insns. If this is NULL, the target disassembler function
79 will have to make its best guess. */
80 asection *section;
81
82 /* An array of pointers to symbols either at the location being disassembled
83 or at the start of the function being disassembled. The array is sorted
84 so that the first symbol is intended to be the one used. The others are
85 present for any misc. purposes. This is not set reliably, but if it is
86 not NULL, it is correct. */
87 asymbol **symbols;
88 /* Number of symbols in array. */
89 int num_symbols;
90
91 /* For use by the disassembler.
92 The top 16 bits are reserved for public use (and are documented here).
93 The bottom 16 bits are for the internal use of the disassembler. */
94 unsigned long flags;
95#define INSN_HAS_RELOC 0x80000000
96 PTR private_data;
97
98 /* Function used to get bytes to disassemble. MEMADDR is the
99 address of the stuff to be disassembled, MYADDR is the address to
100 put the bytes in, and LENGTH is the number of bytes to read.
101 INFO is a pointer to this struct.
102 Returns an errno value or 0 for success. */
103 int (*read_memory_func)
104 PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
105 struct disassemble_info *info));
106
107 /* Function which should be called if we get an error that we can't
108 recover from. STATUS is the errno value from read_memory_func and
109 MEMADDR is the address that we were trying to read. INFO is a
110 pointer to this struct. */
111 void (*memory_error_func)
112 PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
113
114 /* Function called to print ADDR. */
115 void (*print_address_func)
116 PARAMS ((bfd_vma addr, struct disassemble_info *info));
117
118 /* Function called to determine if there is a symbol at the given ADDR.
119 If there is, the function returns 1, otherwise it returns 0.
120 This is used by ports which support an overlay manager where
121 the overlay number is held in the top part of an address. In
122 some circumstances we want to include the overlay number in the
123 address, (normally because there is a symbol associated with
124 that address), but sometimes we want to mask out the overlay bits. */
125 int (* symbol_at_address_func)
126 PARAMS ((bfd_vma addr, struct disassemble_info * info));
127
128 /* These are for buffer_read_memory. */
129 bfd_byte *buffer;
130 bfd_vma buffer_vma;
131 unsigned int buffer_length;
132
133 /* This variable may be set by the instruction decoder. It suggests
134 the number of bytes objdump should display on a single line. If
135 the instruction decoder sets this, it should always set it to
136 the same value in order to get reasonable looking output. */
137 int bytes_per_line;
138
139 /* the next two variables control the way objdump displays the raw data */
140 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
141 /* output will look like this:
142 00: 00000000 00000000
143 with the chunks displayed according to "display_endian". */
144 int bytes_per_chunk;
145 enum bfd_endian display_endian;
146
147 /* Number of octets per incremented target address
148 Normally one, but some DSPs have byte sizes of 16 or 32 bits
149 */
150 unsigned int octets_per_byte;
151
152 /* Results from instruction decoders. Not all decoders yet support
153 this information. This info is set each time an instruction is
154 decoded, and is only valid for the last such instruction.
155
156 To determine whether this decoder supports this information, set
157 insn_info_valid to 0, decode an instruction, then check it. */
158
159 char insn_info_valid; /* Branch info has been set. */
160 char branch_delay_insns; /* How many sequential insn's will run before
161 a branch takes effect. (0 = normal) */
162 char data_size; /* Size of data reference in insn, in bytes */
163 enum dis_insn_type insn_type; /* Type of instruction */
164 bfd_vma target; /* Target address of branch or dref, if known;
165 zero if unknown. */
166 bfd_vma target2; /* Second target address for dref2 */
167
168 /* Command line options specific to the target disassembler. */
169 char * disassembler_options;
170
171} disassemble_info;
172
173
174
175/* Standard disassemblers. Disassemble one instruction at the given
176 target address. Return number of bytes processed. */
177typedef int (*disassembler_ftype)
178 PARAMS((bfd_vma, disassemble_info *));
179
180extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
181extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
182extern int print_insn_i386_att PARAMS ((bfd_vma, disassemble_info*));
183extern int print_insn_i386_intel PARAMS ((bfd_vma, disassemble_info*));
184extern int print_insn_ia64 PARAMS ((bfd_vma, disassemble_info*));
185extern int print_insn_i370 PARAMS ((bfd_vma, disassemble_info*));
186extern int print_insn_m68hc11 PARAMS ((bfd_vma, disassemble_info*));
187extern int print_insn_m68hc12 PARAMS ((bfd_vma, disassemble_info*));
188extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
189extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
190extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
191extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
192extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
193extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
194extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
195extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
196extern disassembler_ftype arc_get_disassembler PARAMS ((void *));
197extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
198extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
199extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
200extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
201extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
202extern int print_insn_i860 PARAMS ((bfd_vma, disassemble_info*));
203extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
204extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
205extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
206extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
207extern int print_insn_fr30 PARAMS ((bfd_vma, disassemble_info*));
208extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
209extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
210extern int print_insn_mcore PARAMS ((bfd_vma, disassemble_info*));
211extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
212extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
213extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
214extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
215extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
216extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
217extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
218extern disassembler_ftype cris_get_disassembler PARAMS ((bfd *));
219extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
220extern int print_insn_d30v PARAMS ((bfd_vma, disassemble_info*));
221extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
222extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
223extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
224extern int print_insn_tic54x PARAMS ((bfd_vma, disassemble_info*));
225extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
226extern int print_insn_pj PARAMS ((bfd_vma, disassemble_info*));
227extern int print_insn_avr PARAMS ((bfd_vma, disassemble_info*));
228
229extern void print_arm_disassembler_options PARAMS ((FILE *));
230extern void parse_arm_disassembler_option PARAMS ((char *));
231extern int get_arm_regname_num_options PARAMS ((void));
232extern int set_arm_regname_option PARAMS ((int));
233extern int get_arm_regnames PARAMS ((int, const char **, const char **, const char ***));
234
235/* Fetch the disassembler for a given BFD, if that support is available. */
236extern disassembler_ftype disassembler PARAMS ((bfd *));
237
238/* Document any target specific options available from the disassembler. */
239extern void disassembler_usage PARAMS ((FILE *));
240
241
242
243/* This block of definitions is for particular callers who read instructions
244 into a buffer before calling the instruction decoder. */
245
246/* Here is a function which callers may wish to use for read_memory_func.
247 It gets bytes from a buffer. */
248extern int buffer_read_memory
249 PARAMS ((bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *));
250
251/* This function goes with buffer_read_memory.
252 It prints a message using info->fprintf_func and info->stream. */
253extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
254
255
256/* Just print the address in hex. This is included for completeness even
257 though both GDB and objdump provide their own (to print symbolic
258 addresses). */
259extern void generic_print_address
260 PARAMS ((bfd_vma, struct disassemble_info *));
261
262/* Always true. */
263extern int generic_symbol_at_address
264 PARAMS ((bfd_vma, struct disassemble_info *));
265
266/* Macro to initialize a disassemble_info struct. This should be called
267 by all applications creating such a struct. */
268#define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
269 (INFO).flavour = bfd_target_unknown_flavour, \
270 (INFO).arch = bfd_arch_unknown, \
271 (INFO).mach = 0, \
272 (INFO).endian = BFD_ENDIAN_UNKNOWN, \
273 (INFO).octets_per_byte = 1, \
274 INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
275
276/* Call this macro to initialize only the internal variables for the
277 disassembler. Architecture dependent things such as byte order, or machine
278 variant are not touched by this macro. This makes things much easier for
279 GDB which must initialize these things separately. */
280
281#define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
282 (INFO).fprintf_func = (fprintf_ftype)(FPRINTF_FUNC), \
283 (INFO).stream = (PTR)(STREAM), \
284 (INFO).section = NULL, \
285 (INFO).symbols = NULL, \
286 (INFO).num_symbols = 0, \
287 (INFO).private_data = NULL, \
288 (INFO).buffer = NULL, \
289 (INFO).buffer_vma = 0, \
290 (INFO).buffer_length = 0, \
291 (INFO).read_memory_func = buffer_read_memory, \
292 (INFO).memory_error_func = perror_memory, \
293 (INFO).print_address_func = generic_print_address, \
294 (INFO).symbol_at_address_func = generic_symbol_at_address, \
295 (INFO).flags = 0, \
296 (INFO).bytes_per_line = 0, \
297 (INFO).bytes_per_chunk = 0, \
298 (INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
299 (INFO).insn_info_valid = 0
300
301#ifdef __cplusplus
302};
303#endif
304
305#endif /* ! defined (DIS_ASM_H) */
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