1 /* Interface between the opcode library and its callers. 2 3 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 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*, ...); 39 40 enum dis_insn_type { 41 dis_noninsn, /* Not a valid instruction */ 42 dis_nonbranch, /* Not a branch instruction */ 43 dis_branch, /* Unconditional branch */ 44 dis_condbranch, /* Conditional branch */ 45 dis_jsr, /* Jump to subroutine */ 46 dis_condjsr, /* Conditional jump to subroutine */ 47 dis_dref, /* Data reference instruction */ 48 dis_dref2 /* Two data references in instruction */ 49 }; 50 51 /* This struct is passed into the instruction decoding routine, 52 and is passed back out into each callback. The various fields are used 53 for conveying information from your main routine into your callbacks, 54 for passing information into the instruction decoders (such as the 55 addresses of the callback functions), or for passing information 56 back from the instruction decoders to their callers. 57 58 It must be initialized before it is first passed; this can be done 59 by hand, or using one of the initialization macros below. */ 60 61 typedef struct disassemble_info { 62 fprintf_ftype fprintf_func; 63 void *stream; 64 void *application_data; 65 66 /* Target description. We could replace this with a pointer to the bfd, 67 but that would require one. There currently isn't any such requirement 68 so to avoid introducing one we record these explicitly. */ 69 /* The bfd_flavour. This can be bfd_target_unknown_flavour. */ 70 enum bfd_flavour flavour; 71 /* The bfd_arch value. */ 72 enum bfd_architecture arch; 73 /* The bfd_mach value. */ 74 unsigned long mach; 75 /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */ 76 enum bfd_endian endian; 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; 82 83 /* Some targets need information about the current section to accurately 84 display insns. If this is NULL, the target disassembler function 85 will have to make its best guess. */ 86 asection *section; 87 88 /* An array of pointers to symbols either at the location being disassembled 89 or at the start of the function being disassembled. The array is sorted 90 so that the first symbol is intended to be the one used. The others are 91 present for any misc. purposes. This is not set reliably, but if it is 92 not NULL, it is correct. */ 93 asymbol **symbols; 94 /* Number of symbols in array. */ 95 int num_symbols; 96 97 /* For use by the disassembler. 98 The top 16 bits are reserved for public use (and are documented here). 99 The bottom 16 bits are for the internal use of the disassembler. */ 100 unsigned long flags; 101 #define INSN_HAS_RELOC 0x80000000 102 void *private_data; 103 104 /* Function used to get bytes to disassemble. MEMADDR is the 105 address of the stuff to be disassembled, MYADDR is the address to 106 put the bytes in, and LENGTH is the number of bytes to read. 107 INFO is a pointer to this struct. 108 Returns an errno value or 0 for success. */ 109 int (*read_memory_func) 110 (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length, 111 struct disassemble_info *info); 112 113 /* Function which should be called if we get an error that we can't 114 recover from. STATUS is the errno value from read_memory_func and 115 MEMADDR is the address that we were trying to read. INFO is a 116 pointer to this struct. */ 117 void (*memory_error_func) 118 (int status, bfd_vma memaddr, struct disassemble_info *info); 119 120 /* Function called to print ADDR. */ 121 void (*print_address_func) 122 (bfd_vma addr, struct disassemble_info *info); 123 124 /* Function called to determine if there is a symbol at the given ADDR. 125 If there is, the function returns 1, otherwise it returns 0. 126 This is used by ports which support an overlay manager where 127 the overlay number is held in the top part of an address. In 128 some circumstances we want to include the overlay number in the 129 address, (normally because there is a symbol associated with 130 that address), but sometimes we want to mask out the overlay bits. */ 131 int (* symbol_at_address_func) 132 (bfd_vma addr, struct disassemble_info * info); 133 134 /* Function called to check if a SYMBOL is can be displayed to the user. 135 This is used by some ports that want to hide special symbols when 136 displaying debugging outout. */ 137 bfd_boolean (* symbol_is_valid) 138 (asymbol *, struct disassemble_info * info); 139 140 /* These are for buffer_read_memory. */ 141 bfd_byte *buffer; 142 bfd_vma buffer_vma; 143 unsigned int buffer_length; 144 145 /* This variable may be set by the instruction decoder. It suggests 146 the number of bytes objdump should display on a single line. If 147 the instruction decoder sets this, it should always set it to 148 the same value in order to get reasonable looking output. */ 149 int bytes_per_line; 150 151 /* The next two variables control the way objdump displays the raw data. */ 152 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */ 153 /* output will look like this: 154 00: 00000000 00000000 155 with the chunks displayed according to "display_endian". */ 156 int bytes_per_chunk; 157 enum bfd_endian display_endian; 158 159 /* Number of octets per incremented target address 160 Normally one, but some DSPs have byte sizes of 16 or 32 bits. */ 161 unsigned int octets_per_byte; 162 163 /* The number of zeroes we want to see at the end of a section before we 164 start skipping them. */ 165 unsigned int skip_zeroes; 166 167 /* The number of zeroes to skip at the end of a section. If the number 168 of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES, 169 they will be disassembled. If there are fewer than 170 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic 171 attempt to avoid disassembling zeroes inserted by section 172 alignment. */ 173 unsigned int skip_zeroes_at_end; 174 175 /* Results from instruction decoders. Not all decoders yet support 176 this information. This info is set each time an instruction is 177 decoded, and is only valid for the last such instruction. 178 179 To determine whether this decoder supports this information, set 180 insn_info_valid to 0, decode an instruction, then check it. */ 181 182 char insn_info_valid; /* Branch info has been set. */ 183 char branch_delay_insns; /* How many sequential insn's will run before 184 a branch takes effect. (0 = normal) */ 185 char data_size; /* Size of data reference in insn, in bytes */ 186 enum dis_insn_type insn_type; /* Type of instruction */ 187 bfd_vma target; /* Target address of branch or dref, if known; 188 zero if unknown. */ 189 bfd_vma target2; /* Second target address for dref2 */ 190 191 /* Command line options specific to the target disassembler. */ 192 char * disassembler_options; 193 194 } disassemble_info; 195 196 197 /* Standard disassemblers. Disassemble one instruction at the given 198 target address. Return number of octets processed. */ 199 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *); 200 201 extern int print_insn_big_mips (bfd_vma, disassemble_info *); 202 extern int print_insn_little_mips (bfd_vma, disassemble_info *); 203 extern int print_insn_i386 (bfd_vma, disassemble_info *); 204 extern int print_insn_i386_att (bfd_vma, disassemble_info *); 205 extern int print_insn_i386_intel (bfd_vma, disassemble_info *); 206 extern int print_insn_ia64 (bfd_vma, disassemble_info *); 207 extern int print_insn_i370 (bfd_vma, disassemble_info *); 208 extern int print_insn_m68hc11 (bfd_vma, disassemble_info *); 209 extern int print_insn_m68hc12 (bfd_vma, disassemble_info *); 210 extern int print_insn_m68k (bfd_vma, disassemble_info *); 211 extern int print_insn_z8001 (bfd_vma, disassemble_info *); 212 extern int print_insn_z8002 (bfd_vma, disassemble_info *); 213 extern int print_insn_h8300 (bfd_vma, disassemble_info *); 214 extern int print_insn_h8300h (bfd_vma, disassemble_info *); 215 extern int print_insn_h8300s (bfd_vma, disassemble_info *); 216 extern int print_insn_h8500 (bfd_vma, disassemble_info *); 217 extern int print_insn_alpha (bfd_vma, disassemble_info *); 218 extern int print_insn_big_arm (bfd_vma, disassemble_info *); 219 extern int print_insn_little_arm (bfd_vma, disassemble_info *); 220 extern int print_insn_sparc (bfd_vma, disassemble_info *); 221 extern int print_insn_big_a29k (bfd_vma, disassemble_info *); 222 extern int print_insn_little_a29k (bfd_vma, disassemble_info *); 223 extern int print_insn_avr (bfd_vma, disassemble_info *); 224 extern int print_insn_d10v (bfd_vma, disassemble_info *); 225 extern int print_insn_d30v (bfd_vma, disassemble_info *); 226 extern int print_insn_dlx (bfd_vma, disassemble_info *); 227 extern int print_insn_fr30 (bfd_vma, disassemble_info *); 228 extern int print_insn_hppa (bfd_vma, disassemble_info *); 229 extern int print_insn_i860 (bfd_vma, disassemble_info *); 230 extern int print_insn_i960 (bfd_vma, disassemble_info *); 231 extern int print_insn_ip2k (bfd_vma, disassemble_info *); 232 extern int print_insn_m32r (bfd_vma, disassemble_info *); 233 extern int print_insn_m88k (bfd_vma, disassemble_info *); 234 extern int print_insn_maxq_little (bfd_vma, disassemble_info *); 235 extern int print_insn_maxq_big (bfd_vma, disassemble_info *); 236 extern int print_insn_mcore (bfd_vma, disassemble_info *); 237 extern int print_insn_mmix (bfd_vma, disassemble_info *); 238 extern int print_insn_mn10200 (bfd_vma, disassemble_info *); 239 extern int print_insn_mn10300 (bfd_vma, disassemble_info *); 240 extern int print_insn_ms1 (bfd_vma, disassemble_info *); 241 extern int print_insn_msp430 (bfd_vma, disassemble_info *); 242 extern int print_insn_ns32k (bfd_vma, disassemble_info *); 243 extern int print_insn_crx (bfd_vma, disassemble_info *); 244 extern int print_insn_openrisc (bfd_vma, disassemble_info *); 245 extern int print_insn_big_or32 (bfd_vma, disassemble_info *); 246 extern int print_insn_little_or32 (bfd_vma, disassemble_info *); 247 extern int print_insn_pdp11 (bfd_vma, disassemble_info *); 248 extern int print_insn_pj (bfd_vma, disassemble_info *); 249 extern int print_insn_big_powerpc (bfd_vma, disassemble_info *); 250 extern int print_insn_little_powerpc (bfd_vma, disassemble_info *); 251 extern int print_insn_rs6000 (bfd_vma, disassemble_info *); 252 extern int print_insn_s390 (bfd_vma, disassemble_info *); 253 extern int print_insn_sh (bfd_vma, disassemble_info *); 254 extern int print_insn_tic30 (bfd_vma, disassemble_info *); 255 extern int print_insn_tic4x (bfd_vma, disassemble_info *); 256 extern int print_insn_tic54x (bfd_vma, disassemble_info *); 257 extern int print_insn_tic80 (bfd_vma, disassemble_info *); 258 extern int print_insn_v850 (bfd_vma, disassemble_info *); 259 extern int print_insn_vax (bfd_vma, disassemble_info *); 260 extern int print_insn_w65 (bfd_vma, disassemble_info *); 261 extern int print_insn_xstormy16 (bfd_vma, disassemble_info *); 262 extern int print_insn_xtensa (bfd_vma, disassemble_info *); 263 extern int print_insn_sh64 (bfd_vma, disassemble_info *); 264 extern int print_insn_sh64x_media (bfd_vma, disassemble_info *); 265 extern int print_insn_frv (bfd_vma, disassemble_info *); 266 extern int print_insn_iq2000 (bfd_vma, disassemble_info *); 267 268 extern disassembler_ftype arc_get_disassembler (void *); 269 extern disassembler_ftype cris_get_disassembler (bfd *); 270 271 extern void print_mips_disassembler_options (FILE *); 272 extern void print_ppc_disassembler_options (FILE *); 273 extern void print_arm_disassembler_options (FILE *); 274 extern void parse_arm_disassembler_option (char *); 275 extern int get_arm_regname_num_options (void); 276 extern int set_arm_regname_option (int); 277 extern int get_arm_regnames (int, const char **, const char **, const char *const **); 278 extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *); 279 280 /* Fetch the disassembler for a given BFD, if that support is available. */ 281 extern disassembler_ftype disassembler (bfd *); 282 283 /* Amend the disassemble_info structure as necessary for the target architecture. 284 Should only be called after initialising the info->arch field. */ 285 extern void disassemble_init_for_target (struct disassemble_info * info); 286 287 /* Document any target specific options available from the disassembler. */ 288 extern void disassembler_usage (FILE *); 289 290 291 /* This block of definitions is for particular callers who read instructions 292 into a buffer before calling the instruction decoder. */ 293 294 /* Here is a function which callers may wish to use for read_memory_func. 295 It gets bytes from a buffer. */ 296 extern int buffer_read_memory 297 (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *); 298 299 /* This function goes with buffer_read_memory. 300 It prints a message using info->fprintf_func and info->stream. */ 301 extern void perror_memory (int, bfd_vma, struct disassemble_info *); 302 303 304 /* Just print the address in hex. This is included for completeness even 305 though both GDB and objdump provide their own (to print symbolic 306 addresses). */ 307 extern void generic_print_address 308 (bfd_vma, struct disassemble_info *); 309 310 /* Always true. */ 311 extern int generic_symbol_at_address 312 (bfd_vma, struct disassemble_info *); 313 314 /* Also always true. */ 315 extern bfd_boolean generic_symbol_is_valid 316 (asymbol *, struct disassemble_info *); 317 318 /* Method to initialize a disassemble_info struct. This should be 319 called by all applications creating such a struct. */ 320 extern void init_disassemble_info (struct disassemble_info *info, void *stream, 321 fprintf_ftype fprintf_func); 322 323 /* For compatibility with existing code. */ 324 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \ 325 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC)) 326 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \ 327 init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC)) 328 329 330 #ifdef __cplusplus 331 } 332 #endif 333 334 #endif /* ! defined (DIS_ASM_H) */ 335