1 /* Interface between the opcode library and its callers.
3 Copyright 2001, 2002 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. */
39 typedef unsigned char u1;
40 typedef unsigned int u4;
41 typedef signed int s4;
46 typedef s4 bfd_signed_vma;
49 typedef int (*fprintf_ftype) PARAMS((PTR, const char*, ...));
52 dis_noninsn, /* Not a valid instruction */
53 dis_nonbranch, /* Not a branch instruction */
54 dis_branch, /* Unconditional branch */
55 dis_condbranch, /* Conditional branch */
56 dis_jsr, /* Jump to subroutine */
57 dis_condjsr, /* Conditional jump to subroutine */
58 dis_dref, /* Data reference instruction */
59 dis_dref2 /* Two data references in instruction */
62 /* This struct is passed into the instruction decoding routine,
63 and is passed back out into each callback. The various fields are used
64 for conveying information from your main routine into your callbacks,
65 for passing information into the instruction decoders (such as the
66 addresses of the callback functions), or for passing information
67 back from the instruction decoders to their callers.
69 It must be initialized before it is first passed; this can be done
70 by hand, or using one of the initialization macros below. */
72 typedef struct disassemble_info {
73 fprintf_ftype fprintf_func;
77 /* An arch/mach-specific bitmask of selected instruction subsets, mainly
78 for processors with run-time-switchable instruction sets. The default,
79 zero, means that there is no constraint. CGEN-based opcodes ports
80 may use ISA_foo masks. */
81 unsigned long insn_sets;
84 /* For use by the disassembler.
85 The top 16 bits are reserved for public use (and are documented here).
86 The bottom 16 bits are for the internal use of the disassembler. */
88 #define INSN_HAS_RELOC 0x80000000
91 /* Function used to get bytes to disassemble. MEMADDR is the
92 address of the stuff to be disassembled, MYADDR is the address to
93 put the bytes in, and LENGTH is the number of bytes to read.
94 INFO is a pointer to this struct.
95 Returns an errno value or 0 for success. */
96 int (*read_memory_func)
97 PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
98 struct disassemble_info *info));
100 /* Function which should be called if we get an error that we can't
101 recover from. STATUS is the errno value from read_memory_func and
102 MEMADDR is the address that we were trying to read. INFO is a
103 pointer to this struct. */
104 void (*memory_error_func)
105 PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
107 /* Function called to print ADDR. */
108 void (*print_address_func)
109 PARAMS ((bfd_vma addr, struct disassemble_info *info));
111 /* Function called to determine if there is a symbol at the given ADDR.
112 If there is, the function returns 1, otherwise it returns 0.
113 This is used by ports which support an overlay manager where
114 the overlay number is held in the top part of an address. In
115 some circumstances we want to include the overlay number in the
116 address, (normally because there is a symbol associated with
117 that address), but sometimes we want to mask out the overlay bits. */
118 int (* symbol_at_address_func)
119 PARAMS ((bfd_vma addr, struct disassemble_info * info));
121 /* These are for buffer_read_memory. */
124 unsigned int buffer_length;
126 /* This variable may be set by the instruction decoder. It suggests
127 the number of bytes objdump should display on a single line. If
128 the instruction decoder sets this, it should always set it to
129 the same value in order to get reasonable looking output. */
132 /* the next two variables control the way objdump displays the raw data */
133 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
134 /* output will look like this:
135 00: 00000000 00000000
136 with the chunks displayed according to "display_endian". */
139 /* Number of octets per incremented target address
140 Normally one, but some DSPs have byte sizes of 16 or 32 bits. */
141 unsigned int octets_per_byte;
143 /* Results from instruction decoders. Not all decoders yet support
144 this information. This info is set each time an instruction is
145 decoded, and is only valid for the last such instruction.
147 To determine whether this decoder supports this information, set
148 insn_info_valid to 0, decode an instruction, then check it. */
150 char insn_info_valid; /* Branch info has been set. */
151 char branch_delay_insns; /* How many sequential insn's will run before
152 a branch takes effect. (0 = normal) */
153 char data_size; /* Size of data reference in insn, in bytes */
154 enum dis_insn_type insn_type; /* Type of instruction */
155 bfd_vma target; /* Target address of branch or dref, if known;
157 bfd_vma target2; /* Second target address for dref2 */
159 /* Command line options specific to the target disassembler. */
160 char * disassembler_options;
165 /* Standard disassemblers. Disassemble one instruction at the given
166 target address. Return number of octets processed. */
167 typedef int (*disassembler_ftype)
168 PARAMS((bfd_vma, disassemble_info *));
170 extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
171 extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
172 extern int print_insn_i386 PARAMS ((bfd_vma, disassemble_info *));
173 extern int print_insn_i386_att PARAMS ((bfd_vma, disassemble_info*));
174 extern int print_insn_i386_intel PARAMS ((bfd_vma, disassemble_info*));
175 extern int print_insn_ia64 PARAMS ((bfd_vma, disassemble_info*));
176 extern int print_insn_i370 PARAMS ((bfd_vma, disassemble_info*));
177 extern int print_insn_m68hc11 PARAMS ((bfd_vma, disassemble_info*));
178 extern int print_insn_m68hc12 PARAMS ((bfd_vma, disassemble_info*));
179 extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
180 extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
181 extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
182 extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
183 extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
184 extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
185 extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
186 extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
187 extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
188 extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
189 extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
190 extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
191 extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
192 extern int print_insn_avr PARAMS ((bfd_vma, disassemble_info*));
193 extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
194 extern int print_insn_d30v PARAMS ((bfd_vma, disassemble_info*));
195 extern int print_insn_dlx PARAMS ((bfd_vma, disassemble_info*));
196 extern int print_insn_fr30 PARAMS ((bfd_vma, disassemble_info*));
197 extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
198 extern int print_insn_i860 PARAMS ((bfd_vma, disassemble_info*));
199 extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
200 extern int print_insn_ip2k PARAMS ((bfd_vma, disassemble_info*));
201 extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
202 extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
203 extern int print_insn_mcore PARAMS ((bfd_vma, disassemble_info*));
204 extern int print_insn_mmix PARAMS ((bfd_vma, disassemble_info*));
205 extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
206 extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
207 extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
208 extern int print_insn_openrisc PARAMS ((bfd_vma, disassemble_info*));
209 extern int print_insn_big_or32 PARAMS ((bfd_vma, disassemble_info*));
210 extern int print_insn_little_or32 PARAMS ((bfd_vma, disassemble_info*));
211 extern int print_insn_pdp11 PARAMS ((bfd_vma, disassemble_info*));
212 extern int print_insn_pj PARAMS ((bfd_vma, disassemble_info*));
213 extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
214 extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
215 extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
216 extern int print_insn_s390 PARAMS ((bfd_vma, disassemble_info*));
217 extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
218 extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
219 extern int print_insn_tic4x PARAMS ((bfd_vma, disassemble_info*));
220 extern int print_insn_tic54x PARAMS ((bfd_vma, disassemble_info*));
221 extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
222 extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
223 extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
224 extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
225 extern int print_insn_xstormy16 PARAMS ((bfd_vma, disassemble_info*));
226 extern int print_insn_sh64 PARAMS ((bfd_vma, disassemble_info *));
227 extern int print_insn_sh64x_media PARAMS ((bfd_vma, disassemble_info *));
228 extern int print_insn_frv PARAMS ((bfd_vma, disassemble_info *));
230 extern disassembler_ftype arc_get_disassembler PARAMS ((void *));
231 extern disassembler_ftype cris_get_disassembler PARAMS ((bfd *));
233 extern void print_arm_disassembler_options PARAMS ((FILE *));
234 extern void parse_arm_disassembler_option PARAMS ((char *));
235 extern int get_arm_regname_num_options PARAMS ((void));
236 extern int set_arm_regname_option PARAMS ((int));
237 extern int get_arm_regnames PARAMS ((int, const char **, const char **, const char ***));
239 /* Fetch the disassembler for a given BFD, if that support is available. */
240 extern disassembler_ftype disassembler PARAMS ((bfd *));
242 /* Document any target specific options available from the disassembler. */
243 extern void disassembler_usage PARAMS ((FILE *));
246 /* This block of definitions is for particular callers who read instructions
247 into a buffer before calling the instruction decoder. */
249 /* Here is a function which callers may wish to use for read_memory_func.
250 It gets bytes from a buffer. */
251 extern int buffer_read_memory
252 PARAMS ((bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *));
254 /* This function goes with buffer_read_memory.
255 It prints a message using info->fprintf_func and info->stream. */
256 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
259 /* Just print the address in hex. This is included for completeness even
260 though both GDB and objdump provide their own (to print symbolic
262 extern void generic_print_address
263 PARAMS ((bfd_vma, struct disassemble_info *));
266 extern int generic_symbol_at_address
267 PARAMS ((bfd_vma, struct disassemble_info *));
269 /* Macro to initialize a disassemble_info struct. This should be called
270 by all applications creating such a struct. */
271 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
272 (INFO).insn_sets = 0, \
273 (INFO).octets_per_byte = 1, \
274 INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
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. */
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).private_data = NULL, \
285 (INFO).buffer = NULL, \
286 (INFO).buffer_vma = 0, \
287 (INFO).buffer_length = 0, \
288 (INFO).read_memory_func = buffer_read_memory, \
289 (INFO).memory_error_func = perror_memory, \
290 (INFO).print_address_func = generic_print_address, \
291 (INFO).symbol_at_address_func = generic_symbol_at_address, \
293 (INFO).bytes_per_line = 0, \
294 (INFO).bytes_per_chunk = 0, \
295 (INFO).disassembler_options = NULL, \
296 (INFO).insn_info_valid = 0
302 #endif /* ! defined (DIS_ASM_H) */