1 /* Interface between the opcode library and its callers.
3 Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
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)
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.
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.
20 Written by Cygnus Support, 1993.
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. */
37 typedef int (*fprintf_ftype) (void *, const char*, ...);
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 */
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.
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. */
60 typedef struct disassemble_info {
61 fprintf_ftype fprintf_func;
63 void *application_data;
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. */
74 /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
75 enum bfd_endian endian;
76 /* An arch/mach-specific bitmask of selected instruction subsets, mainly
77 for processors with run-time-switchable instruction sets. The default,
78 zero, means that there is no constraint. CGEN-based opcodes ports
79 may use ISA_foo masks. */
80 unsigned long insn_sets;
82 /* Some targets need information about the current section to accurately
83 display insns. If this is NULL, the target disassembler function
84 will have to make its best guess. */
87 /* An array of pointers to symbols either at the location being disassembled
88 or at the start of the function being disassembled. The array is sorted
89 so that the first symbol is intended to be the one used. The others are
90 present for any misc. purposes. This is not set reliably, but if it is
91 not NULL, it is correct. */
93 /* Number of symbols in array. */
96 /* For use by the disassembler.
97 The top 16 bits are reserved for public use (and are documented here).
98 The bottom 16 bits are for the internal use of the disassembler. */
100 #define INSN_HAS_RELOC 0x80000000
103 /* Function used to get bytes to disassemble. MEMADDR is the
104 address of the stuff to be disassembled, MYADDR is the address to
105 put the bytes in, and LENGTH is the number of bytes to read.
106 INFO is a pointer to this struct.
107 Returns an errno value or 0 for success. */
108 int (*read_memory_func)
109 (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
110 struct disassemble_info *info);
112 /* Function which should be called if we get an error that we can't
113 recover from. STATUS is the errno value from read_memory_func and
114 MEMADDR is the address that we were trying to read. INFO is a
115 pointer to this struct. */
116 void (*memory_error_func)
117 (int status, bfd_vma memaddr, struct disassemble_info *info);
119 /* Function called to print ADDR. */
120 void (*print_address_func)
121 (bfd_vma addr, struct disassemble_info *info);
123 /* Function called to determine if there is a symbol at the given ADDR.
124 If there is, the function returns 1, otherwise it returns 0.
125 This is used by ports which support an overlay manager where
126 the overlay number is held in the top part of an address. In
127 some circumstances we want to include the overlay number in the
128 address, (normally because there is a symbol associated with
129 that address), but sometimes we want to mask out the overlay bits. */
130 int (* symbol_at_address_func)
131 (bfd_vma addr, struct disassemble_info * info);
133 /* Function called to check if a SYMBOL is can be displayed to the user.
134 This is used by some ports that want to hide special symbols when
135 displaying debugging outout. */
136 bfd_boolean (* symbol_is_valid)
137 (asymbol *, struct disassemble_info * info);
139 /* These are for buffer_read_memory. */
142 unsigned int buffer_length;
144 /* This variable may be set by the instruction decoder. It suggests
145 the number of bytes objdump should display on a single line. If
146 the instruction decoder sets this, it should always set it to
147 the same value in order to get reasonable looking output. */
150 /* The next two variables control the way objdump displays the raw data. */
151 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
152 /* output will look like this:
153 00: 00000000 00000000
154 with the chunks displayed according to "display_endian". */
156 enum bfd_endian display_endian;
158 /* Number of octets per incremented target address
159 Normally one, but some DSPs have byte sizes of 16 or 32 bits. */
160 unsigned int octets_per_byte;
162 /* Results from instruction decoders. Not all decoders yet support
163 this information. This info is set each time an instruction is
164 decoded, and is only valid for the last such instruction.
166 To determine whether this decoder supports this information, set
167 insn_info_valid to 0, decode an instruction, then check it. */
169 char insn_info_valid; /* Branch info has been set. */
170 char branch_delay_insns; /* How many sequential insn's will run before
171 a branch takes effect. (0 = normal) */
172 char data_size; /* Size of data reference in insn, in bytes */
173 enum dis_insn_type insn_type; /* Type of instruction */
174 bfd_vma target; /* Target address of branch or dref, if known;
176 bfd_vma target2; /* Second target address for dref2 */
178 /* Command line options specific to the target disassembler. */
179 char * disassembler_options;
184 /* Standard disassemblers. Disassemble one instruction at the given
185 target address. Return number of octets processed. */
186 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
188 extern int print_insn_big_mips (bfd_vma, disassemble_info *);
189 extern int print_insn_little_mips (bfd_vma, disassemble_info *);
190 extern int print_insn_i386 (bfd_vma, disassemble_info *);
191 extern int print_insn_i386_att (bfd_vma, disassemble_info *);
192 extern int print_insn_i386_intel (bfd_vma, disassemble_info *);
193 extern int print_insn_ia64 (bfd_vma, disassemble_info *);
194 extern int print_insn_i370 (bfd_vma, disassemble_info *);
195 extern int print_insn_m68hc11 (bfd_vma, disassemble_info *);
196 extern int print_insn_m68hc12 (bfd_vma, disassemble_info *);
197 extern int print_insn_m68k (bfd_vma, disassemble_info *);
198 extern int print_insn_z8001 (bfd_vma, disassemble_info *);
199 extern int print_insn_z8002 (bfd_vma, disassemble_info *);
200 extern int print_insn_h8300 (bfd_vma, disassemble_info *);
201 extern int print_insn_h8300h (bfd_vma, disassemble_info *);
202 extern int print_insn_h8300s (bfd_vma, disassemble_info *);
203 extern int print_insn_h8500 (bfd_vma, disassemble_info *);
204 extern int print_insn_alpha (bfd_vma, disassemble_info *);
205 extern int print_insn_big_arm (bfd_vma, disassemble_info *);
206 extern int print_insn_little_arm (bfd_vma, disassemble_info *);
207 extern int print_insn_sparc (bfd_vma, disassemble_info *);
208 extern int print_insn_big_a29k (bfd_vma, disassemble_info *);
209 extern int print_insn_little_a29k (bfd_vma, disassemble_info *);
210 extern int print_insn_avr (bfd_vma, disassemble_info *);
211 extern int print_insn_d10v (bfd_vma, disassemble_info *);
212 extern int print_insn_d30v (bfd_vma, disassemble_info *);
213 extern int print_insn_dlx (bfd_vma, disassemble_info *);
214 extern int print_insn_fr30 (bfd_vma, disassemble_info *);
215 extern int print_insn_hppa (bfd_vma, disassemble_info *);
216 extern int print_insn_i860 (bfd_vma, disassemble_info *);
217 extern int print_insn_i960 (bfd_vma, disassemble_info *);
218 extern int print_insn_ip2k (bfd_vma, disassemble_info *);
219 extern int print_insn_m32r (bfd_vma, disassemble_info *);
220 extern int print_insn_m88k (bfd_vma, disassemble_info *);
221 extern int print_insn_mcore (bfd_vma, disassemble_info *);
222 extern int print_insn_mmix (bfd_vma, disassemble_info *);
223 extern int print_insn_mn10200 (bfd_vma, disassemble_info *);
224 extern int print_insn_mn10300 (bfd_vma, disassemble_info *);
225 extern int print_insn_msp430 (bfd_vma, disassemble_info *);
226 extern int print_insn_ns32k (bfd_vma, disassemble_info *);
227 extern int print_insn_crx (bfd_vma, disassemble_info *);
228 extern int print_insn_openrisc (bfd_vma, disassemble_info *);
229 extern int print_insn_big_or32 (bfd_vma, disassemble_info *);
230 extern int print_insn_little_or32 (bfd_vma, disassemble_info *);
231 extern int print_insn_pdp11 (bfd_vma, disassemble_info *);
232 extern int print_insn_pj (bfd_vma, disassemble_info *);
233 extern int print_insn_big_powerpc (bfd_vma, disassemble_info *);
234 extern int print_insn_little_powerpc (bfd_vma, disassemble_info *);
235 extern int print_insn_rs6000 (bfd_vma, disassemble_info *);
236 extern int print_insn_s390 (bfd_vma, disassemble_info *);
237 extern int print_insn_sh (bfd_vma, disassemble_info *);
238 extern int print_insn_tic30 (bfd_vma, disassemble_info *);
239 extern int print_insn_tic4x (bfd_vma, disassemble_info *);
240 extern int print_insn_tic54x (bfd_vma, disassemble_info *);
241 extern int print_insn_tic80 (bfd_vma, disassemble_info *);
242 extern int print_insn_v850 (bfd_vma, disassemble_info *);
243 extern int print_insn_vax (bfd_vma, disassemble_info *);
244 extern int print_insn_w65 (bfd_vma, disassemble_info *);
245 extern int print_insn_xstormy16 (bfd_vma, disassemble_info *);
246 extern int print_insn_xtensa (bfd_vma, disassemble_info *);
247 extern int print_insn_sh64 (bfd_vma, disassemble_info *);
248 extern int print_insn_sh64x_media (bfd_vma, disassemble_info *);
249 extern int print_insn_frv (bfd_vma, disassemble_info *);
250 extern int print_insn_iq2000 (bfd_vma, disassemble_info *);
252 extern disassembler_ftype arc_get_disassembler (void *);
253 extern disassembler_ftype cris_get_disassembler (bfd *);
255 extern void print_mips_disassembler_options (FILE *);
256 extern void print_ppc_disassembler_options (FILE *);
257 extern void print_arm_disassembler_options (FILE *);
258 extern void parse_arm_disassembler_option (char *);
259 extern int get_arm_regname_num_options (void);
260 extern int set_arm_regname_option (int);
261 extern int get_arm_regnames (int, const char **, const char **, const char ***);
262 extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
264 /* Fetch the disassembler for a given BFD, if that support is available. */
265 extern disassembler_ftype disassembler (bfd *);
267 /* Amend the disassemble_info structure as necessary for the target architecture.
268 Should only be called after initialising the info->arch field. */
269 extern void disassemble_init_for_target (struct disassemble_info * info);
271 /* Document any target specific options available from the disassembler. */
272 extern void disassembler_usage (FILE *);
275 /* This block of definitions is for particular callers who read instructions
276 into a buffer before calling the instruction decoder. */
278 /* Here is a function which callers may wish to use for read_memory_func.
279 It gets bytes from a buffer. */
280 extern int buffer_read_memory
281 (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
283 /* This function goes with buffer_read_memory.
284 It prints a message using info->fprintf_func and info->stream. */
285 extern void perror_memory (int, bfd_vma, struct disassemble_info *);
288 /* Just print the address in hex. This is included for completeness even
289 though both GDB and objdump provide their own (to print symbolic
291 extern void generic_print_address
292 (bfd_vma, struct disassemble_info *);
295 extern int generic_symbol_at_address
296 (bfd_vma, struct disassemble_info *);
298 /* Also always true. */
299 extern bfd_boolean generic_symbol_is_valid
300 (asymbol *, struct disassemble_info *);
302 /* Method to initialize a disassemble_info struct. This should be
303 called by all applications creating such a struct. */
304 extern void init_disassemble_info (struct disassemble_info *info, void *stream,
305 fprintf_ftype fprintf_func);
307 /* For compatibility with existing code. */
308 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
309 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
310 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
311 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
318 #endif /* ! defined (DIS_ASM_H) */