include/dis-asm.h

   1 /* Interface between the opcode library and its callers.
   2
   3    Copyright 2001, 2002, 2003, 2004 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
  31 extern "C" {
  32 #endif
  33
  34 #include <stdio.h>
  35 #include "bfd.h"
  36
  37 typedef int (*fprintf_ftype) (void *, const char*, ...);
  38
  39 enum 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
  60 typedef struct disassemble_info {
  61   fprintf_ftype fprintf_func;
  62   void *stream;
  63   void *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   /* 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;
  81
  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.  */
  85   asection *section;
  86
  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.  */
  92   asymbol **symbols;
  93   /* Number of symbols in array.  */
  94   int num_symbols;
  95
  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.  */
  99   unsigned long flags;
 100 #define INSN_HAS_RELOC  0x80000000
 101   void *private_data;
 102
 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);
 111
 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);
 118
 119   /* Function called to print ADDR.  */
 120   void (*print_address_func)
 121     (bfd_vma addr, struct disassemble_info *info);
 122
 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);
 132
 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);
 138
 139   /* These are for buffer_read_memory.  */
 140   bfd_byte *buffer;
 141   bfd_vma buffer_vma;
 142   unsigned int buffer_length;
 143
 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.  */
 148   int bytes_per_line;
 149
 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". */
 155   int bytes_per_chunk;
 156   enum bfd_endian display_endian;
 157
 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;
 161
 162   /* The number of zeroes we want to see at the end of a section before we
 163      start skipping them.  */
 164   unsigned int skip_zeroes;
 165
 166   /* The number of zeroes to skip at the end of a section.  If the number
 167      of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES,
 168      they will be disassembled.  If there are fewer than
 169      SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
 170      attempt to avoid disassembling zeroes inserted by section
 171      alignment.  */
 172   unsigned int skip_zeroes_at_end;
 173
 174   /* Results from instruction decoders.  Not all decoders yet support
 175      this information.  This info is set each time an instruction is
 176      decoded, and is only valid for the last such instruction.
 177
 178      To determine whether this decoder supports this information, set
 179      insn_info_valid to 0, decode an instruction, then check it.  */
 180
 181   char insn_info_valid;         /* Branch info has been set. */
 182   char branch_delay_insns;      /* How many sequential insn's will run before
 183                                    a branch takes effect.  (0 = normal) */
 184   char data_size;               /* Size of data reference in insn, in bytes */
 185   enum dis_insn_type insn_type; /* Type of instruction */
 186   bfd_vma target;               /* Target address of branch or dref, if known;
 187                                    zero if unknown.  */
 188   bfd_vma target2;              /* Second target address for dref2 */
 189
 190   /* Command line options specific to the target disassembler.  */
 191   char * disassembler_options;
 192
 193 } disassemble_info;
 194
 195 \f
 196 /* Standard disassemblers.  Disassemble one instruction at the given
 197    target address.  Return number of octets processed.  */
 198 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
 199
 200 extern int print_insn_big_mips          (bfd_vma, disassemble_info *);
 201 extern int print_insn_little_mips       (bfd_vma, disassemble_info *);
 202 extern int print_insn_i386              (bfd_vma, disassemble_info *);
 203 extern int print_insn_i386_att          (bfd_vma, disassemble_info *);
 204 extern int print_insn_i386_intel        (bfd_vma, disassemble_info *);
 205 extern int print_insn_ia64              (bfd_vma, disassemble_info *);
 206 extern int print_insn_i370              (bfd_vma, disassemble_info *);
 207 extern int print_insn_m68hc11           (bfd_vma, disassemble_info *);
 208 extern int print_insn_m68hc12           (bfd_vma, disassemble_info *);
 209 extern int print_insn_m68k              (bfd_vma, disassemble_info *);
 210 extern int print_insn_z8001             (bfd_vma, disassemble_info *);
 211 extern int print_insn_z8002             (bfd_vma, disassemble_info *);
 212 extern int print_insn_h8300             (bfd_vma, disassemble_info *);
 213 extern int print_insn_h8300h            (bfd_vma, disassemble_info *);
 214 extern int print_insn_h8300s            (bfd_vma, disassemble_info *);
 215 extern int print_insn_h8500             (bfd_vma, disassemble_info *);
 216 extern int print_insn_alpha             (bfd_vma, disassemble_info *);
 217 extern int print_insn_big_arm           (bfd_vma, disassemble_info *);
 218 extern int print_insn_little_arm        (bfd_vma, disassemble_info *);
 219 extern int print_insn_sparc             (bfd_vma, disassemble_info *);
 220 extern int print_insn_big_a29k          (bfd_vma, disassemble_info *);
 221 extern int print_insn_little_a29k       (bfd_vma, disassemble_info *);
 222 extern int print_insn_avr               (bfd_vma, disassemble_info *);
 223 extern int print_insn_d10v              (bfd_vma, disassemble_info *);
 224 extern int print_insn_d30v              (bfd_vma, disassemble_info *);
 225 extern int print_insn_dlx               (bfd_vma, disassemble_info *);
 226 extern int print_insn_fr30              (bfd_vma, disassemble_info *);
 227 extern int print_insn_hppa              (bfd_vma, disassemble_info *);
 228 extern int print_insn_i860              (bfd_vma, disassemble_info *);
 229 extern int print_insn_i960              (bfd_vma, disassemble_info *);
 230 extern int print_insn_ip2k              (bfd_vma, disassemble_info *);
 231 extern int print_insn_m32r              (bfd_vma, disassemble_info *);
 232 extern int print_insn_m88k              (bfd_vma, disassemble_info *);
 233 extern int print_insn_maxq_little       (bfd_vma, disassemble_info *);
 234 extern int print_insn_maxq_big          (bfd_vma, disassemble_info *);
 235 extern int print_insn_mcore             (bfd_vma, disassemble_info *);
 236 extern int print_insn_mmix              (bfd_vma, disassemble_info *);
 237 extern int print_insn_mn10200           (bfd_vma, disassemble_info *);
 238 extern int print_insn_mn10300           (bfd_vma, disassemble_info *);
 239 extern int print_insn_msp430            (bfd_vma, disassemble_info *);
 240 extern int print_insn_ns32k             (bfd_vma, disassemble_info *);
 241 extern int print_insn_crx               (bfd_vma, disassemble_info *);
 242 extern int print_insn_openrisc          (bfd_vma, disassemble_info *);
 243 extern int print_insn_big_or32          (bfd_vma, disassemble_info *);
 244 extern int print_insn_little_or32       (bfd_vma, disassemble_info *);
 245 extern int print_insn_pdp11             (bfd_vma, disassemble_info *);
 246 extern int print_insn_pj                (bfd_vma, disassemble_info *);
 247 extern int print_insn_big_powerpc       (bfd_vma, disassemble_info *);
 248 extern int print_insn_little_powerpc    (bfd_vma, disassemble_info *);
 249 extern int print_insn_rs6000            (bfd_vma, disassemble_info *);
 250 extern int print_insn_s390              (bfd_vma, disassemble_info *);
 251 extern int print_insn_sh                (bfd_vma, disassemble_info *);
 252 extern int print_insn_tic30             (bfd_vma, disassemble_info *);
 253 extern int print_insn_tic4x             (bfd_vma, disassemble_info *);
 254 extern int print_insn_tic54x            (bfd_vma, disassemble_info *);
 255 extern int print_insn_tic80             (bfd_vma, disassemble_info *);
 256 extern int print_insn_v850              (bfd_vma, disassemble_info *);
 257 extern int print_insn_vax               (bfd_vma, disassemble_info *);
 258 extern int print_insn_w65               (bfd_vma, disassemble_info *);
 259 extern int print_insn_xstormy16         (bfd_vma, disassemble_info *);
 260 extern int print_insn_xtensa            (bfd_vma, disassemble_info *);
 261 extern int print_insn_sh64              (bfd_vma, disassemble_info *);
 262 extern int print_insn_sh64x_media       (bfd_vma, disassemble_info *);
 263 extern int print_insn_frv               (bfd_vma, disassemble_info *);
 264 extern int print_insn_iq2000            (bfd_vma, disassemble_info *);
 265
 266 extern disassembler_ftype arc_get_disassembler (void *);
 267 extern disassembler_ftype cris_get_disassembler (bfd *);
 268
 269 extern void print_mips_disassembler_options (FILE *);
 270 extern void print_ppc_disassembler_options (FILE *);
 271 extern void print_arm_disassembler_options (FILE *);
 272 extern void parse_arm_disassembler_option (char *);
 273 extern int get_arm_regname_num_options (void);
 274 extern int set_arm_regname_option (int);
 275 extern int get_arm_regnames (int, const char **, const char **, const char ***);
 276 extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
 277
 278 /* Fetch the disassembler for a given BFD, if that support is available.  */
 279 extern disassembler_ftype disassembler (bfd *);
 280
 281 /* Amend the disassemble_info structure as necessary for the target architecture.
 282    Should only be called after initialising the info->arch field.  */
 283 extern void disassemble_init_for_target (struct disassemble_info * info);
 284
 285 /* Document any target specific options available from the disassembler.  */
 286 extern void disassembler_usage (FILE *);
 287
 288 \f
 289 /* This block of definitions is for particular callers who read instructions
 290    into a buffer before calling the instruction decoder.  */
 291
 292 /* Here is a function which callers may wish to use for read_memory_func.
 293    It gets bytes from a buffer.  */
 294 extern int buffer_read_memory
 295   (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
 296
 297 /* This function goes with buffer_read_memory.
 298    It prints a message using info->fprintf_func and info->stream.  */
 299 extern void perror_memory (int, bfd_vma, struct disassemble_info *);
 300
 301
 302 /* Just print the address in hex.  This is included for completeness even
 303    though both GDB and objdump provide their own (to print symbolic
 304    addresses).  */
 305 extern void generic_print_address
 306   (bfd_vma, struct disassemble_info *);
 307
 308 /* Always true.  */
 309 extern int generic_symbol_at_address
 310   (bfd_vma, struct disassemble_info *);
 311
 312 /* Also always true.  */
 313 extern bfd_boolean generic_symbol_is_valid
 314   (asymbol *, struct disassemble_info *);
 315
 316 /* Method to initialize a disassemble_info struct.  This should be
 317    called by all applications creating such a struct.  */
 318 extern void init_disassemble_info (struct disassemble_info *info, void *stream,
 319                                    fprintf_ftype fprintf_func);
 320
 321 /* For compatibility with existing code.  */
 322 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
 323   init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
 324 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
 325   init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
 326
 327
 328 #ifdef __cplusplus
 329 }
 330 #endif
 331
 332 #endif /* ! defined (DIS_ASM_H) */