include/dis-asm.h

   1 /* Interface between the opcode library and its callers.
   2
   3    Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   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*, ...) ATTRIBUTE_FPTR_PRINTF_2;
  39
  40 enum dis_insn_type
  41 {
  42   dis_noninsn,                  /* Not a valid instruction */
  43   dis_nonbranch,                /* Not a branch instruction */
  44   dis_branch,                   /* Unconditional branch */
  45   dis_condbranch,               /* Conditional branch */
  46   dis_jsr,                      /* Jump to subroutine */
  47   dis_condjsr,                  /* Conditional jump to subroutine */
  48   dis_dref,                     /* Data reference instruction */
  49   dis_dref2                     /* Two data references in instruction */
  50 };
  51
  52 /* This struct is passed into the instruction decoding routine,
  53    and is passed back out into each callback.  The various fields are used
  54    for conveying information from your main routine into your callbacks,
  55    for passing information into the instruction decoders (such as the
  56    addresses of the callback functions), or for passing information
  57    back from the instruction decoders to their callers.
  58
  59    It must be initialized before it is first passed; this can be done
  60    by hand, or using one of the initialization macros below.  */
  61
  62 typedef struct disassemble_info
  63 {
  64   fprintf_ftype fprintf_func;
  65   void *stream;
  66   void *application_data;
  67
  68   /* Target description.  We could replace this with a pointer to the bfd,
  69      but that would require one.  There currently isn't any such requirement
  70      so to avoid introducing one we record these explicitly.  */
  71   /* The bfd_flavour.  This can be bfd_target_unknown_flavour.  */
  72   enum bfd_flavour flavour;
  73   /* The bfd_arch value.  */
  74   enum bfd_architecture arch;
  75   /* The bfd_mach value.  */
  76   unsigned long mach;
  77   /* Endianness (for bi-endian cpus).  Mono-endian cpus can ignore this.  */
  78   enum bfd_endian endian;
  79   /* An arch/mach-specific bitmask of selected instruction subsets, mainly
  80      for processors with run-time-switchable instruction sets.  The default,
  81      zero, means that there is no constraint.  CGEN-based opcodes ports
  82      may use ISA_foo masks.  */
  83   void *insn_sets;
  84
  85   /* Some targets need information about the current section to accurately
  86      display insns.  If this is NULL, the target disassembler function
  87      will have to make its best guess.  */
  88   asection *section;
  89
  90   /* An array of pointers to symbols either at the location being disassembled
  91      or at the start of the function being disassembled.  The array is sorted
  92      so that the first symbol is intended to be the one used.  The others are
  93      present for any misc. purposes.  This is not set reliably, but if it is
  94      not NULL, it is correct.  */
  95   asymbol **symbols;
  96   /* Number of symbols in array.  */
  97   int num_symbols;
  98
  99   /* Symbol table provided for targets that want to look at it.  This is
 100      used on Arm to find mapping symbols and determine Arm/Thumb code.  */
 101   asymbol **symtab;
 102   int symtab_pos;
 103   int symtab_size;
 104
 105   /* For use by the disassembler.
 106      The top 16 bits are reserved for public use (and are documented here).
 107      The bottom 16 bits are for the internal use of the disassembler.  */
 108   unsigned long flags;
 109 #define INSN_HAS_RELOC  0x80000000
 110   void *private_data;
 111
 112   /* Function used to get bytes to disassemble.  MEMADDR is the
 113      address of the stuff to be disassembled, MYADDR is the address to
 114      put the bytes in, and LENGTH is the number of bytes to read.
 115      INFO is a pointer to this struct.
 116      Returns an errno value or 0 for success.  */
 117   int (*read_memory_func)
 118     (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
 119      struct disassemble_info *info);
 120
 121   /* Function which should be called if we get an error that we can't
 122      recover from.  STATUS is the errno value from read_memory_func and
 123      MEMADDR is the address that we were trying to read.  INFO is a
 124      pointer to this struct.  */
 125   void (*memory_error_func)
 126     (int status, bfd_vma memaddr, struct disassemble_info *info);
 127
 128   /* Function called to print ADDR.  */
 129   void (*print_address_func)
 130     (bfd_vma addr, struct disassemble_info *info);
 131
 132   /* Function called to determine if there is a symbol at the given ADDR.
 133      If there is, the function returns 1, otherwise it returns 0.
 134      This is used by ports which support an overlay manager where
 135      the overlay number is held in the top part of an address.  In
 136      some circumstances we want to include the overlay number in the
 137      address, (normally because there is a symbol associated with
 138      that address), but sometimes we want to mask out the overlay bits.  */
 139   int (* symbol_at_address_func)
 140     (bfd_vma addr, struct disassemble_info * info);
 141
 142   /* Function called to check if a SYMBOL is can be displayed to the user.
 143      This is used by some ports that want to hide special symbols when
 144      displaying debugging outout.  */
 145   bfd_boolean (* symbol_is_valid)
 146     (asymbol *, struct disassemble_info * info);
 147
 148   /* These are for buffer_read_memory.  */
 149   bfd_byte *buffer;
 150   bfd_vma buffer_vma;
 151   unsigned int buffer_length;
 152
 153   /* This variable may be set by the instruction decoder.  It suggests
 154       the number of bytes objdump should display on a single line.  If
 155       the instruction decoder sets this, it should always set it to
 156       the same value in order to get reasonable looking output.  */
 157   int bytes_per_line;
 158
 159   /* The next two variables control the way objdump displays the raw data.  */
 160   /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
 161   /* output will look like this:
 162      00:   00000000 00000000
 163      with the chunks displayed according to "display_endian". */
 164   int bytes_per_chunk;
 165   enum bfd_endian display_endian;
 166
 167   /* Number of octets per incremented target address
 168      Normally one, but some DSPs have byte sizes of 16 or 32 bits.  */
 169   unsigned int octets_per_byte;
 170
 171   /* The number of zeroes we want to see at the end of a section before we
 172      start skipping them.  */
 173   unsigned int skip_zeroes;
 174
 175   /* The number of zeroes to skip at the end of a section.  If the number
 176      of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES,
 177      they will be disassembled.  If there are fewer than
 178      SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
 179      attempt to avoid disassembling zeroes inserted by section
 180      alignment.  */
 181   unsigned int skip_zeroes_at_end;
 182
 183   /* Whether the disassembler always needs the relocations.  */
 184   bfd_boolean disassembler_needs_relocs;
 185
 186   /* Results from instruction decoders.  Not all decoders yet support
 187      this information.  This info is set each time an instruction is
 188      decoded, and is only valid for the last such instruction.
 189
 190      To determine whether this decoder supports this information, set
 191      insn_info_valid to 0, decode an instruction, then check it.  */
 192
 193   char insn_info_valid;         /* Branch info has been set. */
 194   char branch_delay_insns;      /* How many sequential insn's will run before
 195                                    a branch takes effect.  (0 = normal) */
 196   char data_size;               /* Size of data reference in insn, in bytes */
 197   enum dis_insn_type insn_type; /* Type of instruction */
 198   bfd_vma target;               /* Target address of branch or dref, if known;
 199                                    zero if unknown.  */
 200   bfd_vma target2;              /* Second target address for dref2 */
 201
 202   /* Command line options specific to the target disassembler.  */
 203   char * disassembler_options;
 204
 205 } disassemble_info;
 206
 207 \f
 208 /* Standard disassemblers.  Disassemble one instruction at the given
 209    target address.  Return number of octets processed.  */
 210 typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
 211
 212 extern int print_insn_alpha             (bfd_vma, disassemble_info *);
 213 extern int print_insn_avr               (bfd_vma, disassemble_info *);
 214 extern int print_insn_bfin              (bfd_vma, disassemble_info *);
 215 extern int print_insn_big_arm           (bfd_vma, disassemble_info *);
 216 extern int print_insn_big_mips          (bfd_vma, disassemble_info *);
 217 extern int print_insn_big_or32          (bfd_vma, disassemble_info *);
 218 extern int print_insn_big_powerpc       (bfd_vma, disassemble_info *);
 219 extern int print_insn_big_score         (bfd_vma, disassemble_info *);
 220 extern int print_insn_crx               (bfd_vma, disassemble_info *);
 221 extern int print_insn_d10v              (bfd_vma, disassemble_info *);
 222 extern int print_insn_d30v              (bfd_vma, disassemble_info *);
 223 extern int print_insn_dlx               (bfd_vma, disassemble_info *);
 224 extern int print_insn_fr30              (bfd_vma, disassemble_info *);
 225 extern int print_insn_frv               (bfd_vma, disassemble_info *);
 226 extern int print_insn_h8300             (bfd_vma, disassemble_info *);
 227 extern int print_insn_h8300h            (bfd_vma, disassemble_info *);
 228 extern int print_insn_h8300s            (bfd_vma, disassemble_info *);
 229 extern int print_insn_h8500             (bfd_vma, disassemble_info *);
 230 extern int print_insn_hppa              (bfd_vma, disassemble_info *);
 231 extern int print_insn_i370              (bfd_vma, disassemble_info *);
 232 extern int print_insn_i386              (bfd_vma, disassemble_info *);
 233 extern int print_insn_i386_att          (bfd_vma, disassemble_info *);
 234 extern int print_insn_i386_intel        (bfd_vma, disassemble_info *);
 235 extern int print_insn_i860              (bfd_vma, disassemble_info *);
 236 extern int print_insn_i960              (bfd_vma, disassemble_info *);
 237 extern int print_insn_ia64              (bfd_vma, disassemble_info *);
 238 extern int print_insn_ip2k              (bfd_vma, disassemble_info *);
 239 extern int print_insn_iq2000            (bfd_vma, disassemble_info *);
 240 extern int print_insn_little_arm        (bfd_vma, disassemble_info *);
 241 extern int print_insn_little_mips       (bfd_vma, disassemble_info *);
 242 extern int print_insn_little_or32       (bfd_vma, disassemble_info *);
 243 extern int print_insn_little_powerpc    (bfd_vma, disassemble_info *);
 244 extern int print_insn_little_score      (bfd_vma, disassemble_info *);
 245 extern int print_insn_m32c              (bfd_vma, disassemble_info *);
 246 extern int print_insn_m32r              (bfd_vma, disassemble_info *);
 247 extern int print_insn_m68hc11           (bfd_vma, disassemble_info *);
 248 extern int print_insn_m68hc12           (bfd_vma, disassemble_info *);
 249 extern int print_insn_m68k              (bfd_vma, disassemble_info *);
 250 extern int print_insn_m88k              (bfd_vma, disassemble_info *);
 251 extern int print_insn_maxq_big          (bfd_vma, disassemble_info *);
 252 extern int print_insn_maxq_little       (bfd_vma, disassemble_info *);
 253 extern int print_insn_mcore             (bfd_vma, disassemble_info *);
 254 extern int print_insn_mmix              (bfd_vma, disassemble_info *);
 255 extern int print_insn_mn10200           (bfd_vma, disassemble_info *);
 256 extern int print_insn_mn10300           (bfd_vma, disassemble_info *);
 257 extern int print_insn_msp430            (bfd_vma, disassemble_info *);
 258 extern int print_insn_mt                (bfd_vma, disassemble_info *);
 259 extern int print_insn_ns32k             (bfd_vma, disassemble_info *);
 260 extern int print_insn_openrisc          (bfd_vma, disassemble_info *);
 261 extern int print_insn_pdp11             (bfd_vma, disassemble_info *);
 262 extern int print_insn_pj                (bfd_vma, disassemble_info *);
 263 extern int print_insn_rs6000            (bfd_vma, disassemble_info *);
 264 extern int print_insn_s390              (bfd_vma, disassemble_info *);
 265 extern int print_insn_sh                (bfd_vma, disassemble_info *);
 266 extern int print_insn_sh64              (bfd_vma, disassemble_info *);
 267 extern int print_insn_sh64x_media       (bfd_vma, disassemble_info *);
 268 extern int print_insn_sparc             (bfd_vma, disassemble_info *);
 269 extern int print_insn_spu               (bfd_vma, disassemble_info *);
 270 extern int print_insn_tic30             (bfd_vma, disassemble_info *);
 271 extern int print_insn_tic4x             (bfd_vma, disassemble_info *);
 272 extern int print_insn_tic54x            (bfd_vma, disassemble_info *);
 273 extern int print_insn_tic80             (bfd_vma, disassemble_info *);
 274 extern int print_insn_v850              (bfd_vma, disassemble_info *);
 275 extern int print_insn_vax               (bfd_vma, disassemble_info *);
 276 extern int print_insn_w65               (bfd_vma, disassemble_info *);
 277 extern int print_insn_xc16x             (bfd_vma, disassemble_info *);
 278 extern int print_insn_xstormy16         (bfd_vma, disassemble_info *);
 279 extern int print_insn_xtensa            (bfd_vma, disassemble_info *);
 280 extern int print_insn_z80               (bfd_vma, disassemble_info *);
 281 extern int print_insn_z8001             (bfd_vma, disassemble_info *);
 282 extern int print_insn_z8002             (bfd_vma, disassemble_info *);
 283
 284 extern disassembler_ftype arc_get_disassembler (void *);
 285 extern disassembler_ftype cris_get_disassembler (bfd *);
 286
 287 extern void print_i386_disassembler_options (FILE *);
 288 extern void print_mips_disassembler_options (FILE *);
 289 extern void print_ppc_disassembler_options (FILE *);
 290 extern void print_arm_disassembler_options (FILE *);
 291 extern void parse_arm_disassembler_option (char *);
 292 extern int  get_arm_regname_num_options (void);
 293 extern int  set_arm_regname_option (int);
 294 extern int  get_arm_regnames (int, const char **, const char **, const char *const **);
 295 extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *);
 296
 297 /* Fetch the disassembler for a given BFD, if that support is available.  */
 298 extern disassembler_ftype disassembler (bfd *);
 299
 300 /* Amend the disassemble_info structure as necessary for the target architecture.
 301    Should only be called after initialising the info->arch field.  */
 302 extern void disassemble_init_for_target (struct disassemble_info * info);
 303
 304 /* Document any target specific options available from the disassembler.  */
 305 extern void disassembler_usage (FILE *);
 306
 307 \f
 308 /* This block of definitions is for particular callers who read instructions
 309    into a buffer before calling the instruction decoder.  */
 310
 311 /* Here is a function which callers may wish to use for read_memory_func.
 312    It gets bytes from a buffer.  */
 313 extern int buffer_read_memory
 314   (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *);
 315
 316 /* This function goes with buffer_read_memory.
 317    It prints a message using info->fprintf_func and info->stream.  */
 318 extern void perror_memory (int, bfd_vma, struct disassemble_info *);
 319
 320
 321 /* Just print the address in hex.  This is included for completeness even
 322    though both GDB and objdump provide their own (to print symbolic
 323    addresses).  */
 324 extern void generic_print_address
 325   (bfd_vma, struct disassemble_info *);
 326
 327 /* Always true.  */
 328 extern int generic_symbol_at_address
 329   (bfd_vma, struct disassemble_info *);
 330
 331 /* Also always true.  */
 332 extern bfd_boolean generic_symbol_is_valid
 333   (asymbol *, struct disassemble_info *);
 334
 335 /* Method to initialize a disassemble_info struct.  This should be
 336    called by all applications creating such a struct.  */
 337 extern void init_disassemble_info (struct disassemble_info *info, void *stream,
 338                                    fprintf_ftype fprintf_func);
 339
 340 /* For compatibility with existing code.  */
 341 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
 342   init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
 343 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
 344   init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC))
 345
 346
 347 #ifdef __cplusplus
 348 }
 349 #endif
 350
 351 #endif /* ! defined (DIS_ASM_H) */