ntoskrnl/kdbg/i386/dis-asm.h

   1 /* Interface between the opcode library and its callers.
   2
   3    Copyright 2001, 2002 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 of the License, or
   8    (at your option) 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 along
  16    with this program; if not, write to the Free Software Foundation, Inc.,
  17    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19    Written by Cygnus Support, 1993.
  20
  21    The opcode library (libopcodes.a) provides instruction decoders for
  22    a large variety of instruction sets, callable with an identical
  23    interface, for making instruction-processing programs more independent
  24    of the instruction set being processed.  */
  25
  26 #pragma once
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #if 0
  33 /* #include <stdio.h> */
  34 /* #include "bfd.h" */
  35 #endif
  36
  37 typedef int (*fprintf_ftype) PARAMS((PTR, 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   PTR stream;
  63   PTR 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 #if 0
  75   enum bfd_endian endian;
  76 #endif
  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 #if 0
  84   /* Some targets need information about the current section to accurately
  85      display insns.  If this is NULL, the target disassembler function
  86      will have to make its best guess.  */
  87   asection *section;
  88
  89   /* An array of pointers to symbols either at the location being disassembled
  90      or at the start of the function being disassembled.  The array is sorted
  91      so that the first symbol is intended to be the one used.  The others are
  92      present for any misc. purposes.  This is not set reliably, but if it is
  93      not NULL, it is correct.  */
  94   asymbol **symbols;
  95   /* Number of symbols in array.  */
  96   int num_symbols;
  97 #endif
  98   /* For use by the disassembler.
  99      The top 16 bits are reserved for public use (and are documented here).
 100      The bottom 16 bits are for the internal use of the disassembler.  */
 101   unsigned long flags;
 102 #define INSN_HAS_RELOC  0x80000000
 103   PTR private_data;
 104
 105   /* Function used to get bytes to disassemble.  MEMADDR is the
 106      address of the stuff to be disassembled, MYADDR is the address to
 107      put the bytes in, and LENGTH is the number of bytes to read.
 108      INFO is a pointer to this struct.
 109      Returns an errno value or 0 for success.  */
 110   int (*read_memory_func)
 111     PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
 112              struct disassemble_info *info));
 113
 114   /* Function which should be called if we get an error that we can't
 115      recover from.  STATUS is the errno value from read_memory_func and
 116      MEMADDR is the address that we were trying to read.  INFO is a
 117      pointer to this struct.  */
 118   void (*memory_error_func)
 119     PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
 120
 121   /* Function called to print ADDR.  */
 122   void (*print_address_func)
 123     PARAMS ((bfd_vma addr, struct disassemble_info *info));
 124
 125   /* Function called to determine if there is a symbol at the given ADDR.
 126      If there is, the function returns 1, otherwise it returns 0.
 127      This is used by ports which support an overlay manager where
 128      the overlay number is held in the top part of an address.  In
 129      some circumstances we want to include the overlay number in the
 130      address, (normally because there is a symbol associated with
 131      that address), but sometimes we want to mask out the overlay bits.  */
 132   int (* symbol_at_address_func)
 133     PARAMS ((bfd_vma addr, struct disassemble_info * info));
 134
 135   /* These are for buffer_read_memory.  */
 136   bfd_byte *buffer;
 137   bfd_vma buffer_vma;
 138   unsigned int buffer_length;
 139
 140   /* This variable may be set by the instruction decoder.  It suggests
 141       the number of bytes objdump should display on a single line.  If
 142       the instruction decoder sets this, it should always set it to
 143       the same value in order to get reasonable looking output.  */
 144   int bytes_per_line;
 145
 146   /* the next two variables control the way objdump displays the raw data */
 147   /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
 148   /* output will look like this:
 149      00:   00000000 00000000
 150      with the chunks displayed according to "display_endian". */
 151   int bytes_per_chunk;
 152   enum bfd_endian display_endian;
 153
 154   /* Number of octets per incremented target address
 155      Normally one, but some DSPs have byte sizes of 16 or 32 bits.  */
 156   unsigned int octets_per_byte;
 157
 158   /* Results from instruction decoders.  Not all decoders yet support
 159      this information.  This info is set each time an instruction is
 160      decoded, and is only valid for the last such instruction.
 161
 162      To determine whether this decoder supports this information, set
 163      insn_info_valid to 0, decode an instruction, then check it.  */
 164
 165   char insn_info_valid;         /* Branch info has been set. */
 166   char branch_delay_insns;      /* How many sequential insn's will run before
 167                                    a branch takes effect.  (0 = normal) */
 168   char data_size;               /* Size of data reference in insn, in bytes */
 169   enum dis_insn_type insn_type; /* Type of instruction */
 170   bfd_vma target;               /* Target address of branch or dref, if known;
 171                                    zero if unknown.  */
 172   bfd_vma target2;              /* Second target address for dref2 */
 173
 174   /* Command line options specific to the target disassembler.  */
 175   char * disassembler_options;
 176
 177 } disassemble_info;
 178
 179 \f
 180 /* Standard disassemblers.  Disassemble one instruction at the given
 181    target address.  Return number of octets processed.  */
 182 typedef int (*disassembler_ftype)
 183      PARAMS((bfd_vma, disassemble_info *));
 184
 185 extern int print_insn_big_mips          PARAMS ((bfd_vma, disassemble_info*));
 186 extern int print_insn_little_mips       PARAMS ((bfd_vma, disassemble_info*));
 187 extern int print_insn_i386              PARAMS ((bfd_vma, disassemble_info *));
 188 extern int print_insn_i386_att          PARAMS ((bfd_vma, disassemble_info*));
 189 extern int print_insn_i386_intel        PARAMS ((bfd_vma, disassemble_info*));
 190 extern int print_insn_ia64              PARAMS ((bfd_vma, disassemble_info*));
 191 extern int print_insn_i370              PARAMS ((bfd_vma, disassemble_info*));
 192 extern int print_insn_m68hc11           PARAMS ((bfd_vma, disassemble_info*));
 193 extern int print_insn_m68hc12           PARAMS ((bfd_vma, disassemble_info*));
 194 extern int print_insn_m68k              PARAMS ((bfd_vma, disassemble_info*));
 195 extern int print_insn_z8001             PARAMS ((bfd_vma, disassemble_info*));
 196 extern int print_insn_z8002             PARAMS ((bfd_vma, disassemble_info*));
 197 extern int print_insn_h8300             PARAMS ((bfd_vma, disassemble_info*));
 198 extern int print_insn_h8300h            PARAMS ((bfd_vma, disassemble_info*));
 199 extern int print_insn_h8300s            PARAMS ((bfd_vma, disassemble_info*));
 200 extern int print_insn_h8500             PARAMS ((bfd_vma, disassemble_info*));
 201 extern int print_insn_alpha             PARAMS ((bfd_vma, disassemble_info*));
 202 extern int print_insn_big_arm           PARAMS ((bfd_vma, disassemble_info*));
 203 extern int print_insn_little_arm        PARAMS ((bfd_vma, disassemble_info*));
 204 extern int print_insn_sparc             PARAMS ((bfd_vma, disassemble_info*));
 205 extern int print_insn_big_a29k          PARAMS ((bfd_vma, disassemble_info*));
 206 extern int print_insn_little_a29k       PARAMS ((bfd_vma, disassemble_info*));
 207 extern int print_insn_avr               PARAMS ((bfd_vma, disassemble_info*));
 208 extern int print_insn_d10v              PARAMS ((bfd_vma, disassemble_info*));
 209 extern int print_insn_d30v              PARAMS ((bfd_vma, disassemble_info*));
 210 extern int print_insn_dlx               PARAMS ((bfd_vma, disassemble_info*));
 211 extern int print_insn_fr30              PARAMS ((bfd_vma, disassemble_info*));
 212 extern int print_insn_hppa              PARAMS ((bfd_vma, disassemble_info*));
 213 extern int print_insn_i860              PARAMS ((bfd_vma, disassemble_info*));
 214 extern int print_insn_i960              PARAMS ((bfd_vma, disassemble_info*));
 215 extern int print_insn_ip2k              PARAMS ((bfd_vma, disassemble_info*));
 216 extern int print_insn_m32r              PARAMS ((bfd_vma, disassemble_info*));
 217 extern int print_insn_m88k              PARAMS ((bfd_vma, disassemble_info*));
 218 extern int print_insn_mcore             PARAMS ((bfd_vma, disassemble_info*));
 219 extern int print_insn_mmix              PARAMS ((bfd_vma, disassemble_info*));
 220 extern int print_insn_mn10200           PARAMS ((bfd_vma, disassemble_info*));
 221 extern int print_insn_mn10300           PARAMS ((bfd_vma, disassemble_info*));
 222 extern int print_insn_msp430            PARAMS ((bfd_vma, disassemble_info*));
 223 extern int print_insn_ns32k             PARAMS ((bfd_vma, disassemble_info*));
 224 extern int print_insn_openrisc          PARAMS ((bfd_vma, disassemble_info*));
 225 extern int print_insn_big_or32          PARAMS ((bfd_vma, disassemble_info*));
 226 extern int print_insn_little_or32       PARAMS ((bfd_vma, disassemble_info*));
 227 extern int print_insn_pdp11             PARAMS ((bfd_vma, disassemble_info*));
 228 extern int print_insn_pj                PARAMS ((bfd_vma, disassemble_info*));
 229 extern int print_insn_big_powerpc       PARAMS ((bfd_vma, disassemble_info*));
 230 extern int print_insn_little_powerpc    PARAMS ((bfd_vma, disassemble_info*));
 231 extern int print_insn_rs6000            PARAMS ((bfd_vma, disassemble_info*));
 232 extern int print_insn_s390              PARAMS ((bfd_vma, disassemble_info*));
 233 extern int print_insn_sh                PARAMS ((bfd_vma, disassemble_info*));
 234 extern int print_insn_tic30             PARAMS ((bfd_vma, disassemble_info*));
 235 extern int print_insn_tic4x             PARAMS ((bfd_vma, disassemble_info*));
 236 extern int print_insn_tic54x            PARAMS ((bfd_vma, disassemble_info*));
 237 extern int print_insn_tic80             PARAMS ((bfd_vma, disassemble_info*));
 238 extern int print_insn_v850              PARAMS ((bfd_vma, disassemble_info*));
 239 extern int print_insn_vax               PARAMS ((bfd_vma, disassemble_info*));
 240 extern int print_insn_w65               PARAMS ((bfd_vma, disassemble_info*));
 241 extern int print_insn_xstormy16         PARAMS ((bfd_vma, disassemble_info*));
 242 extern int print_insn_sh64              PARAMS ((bfd_vma, disassemble_info *));
 243 extern int print_insn_sh64x_media       PARAMS ((bfd_vma, disassemble_info *));
 244 extern int print_insn_frv               PARAMS ((bfd_vma, disassemble_info *));
 245 extern int print_insn_iq2000            PARAMS ((bfd_vma, disassemble_info *));
 246
 247 extern disassembler_ftype arc_get_disassembler PARAMS ((void *));
 248 extern disassembler_ftype cris_get_disassembler PARAMS ((bfd *));
 249
 250 extern void print_mips_disassembler_options PARAMS ((FILE *));
 251 extern void print_ppc_disassembler_options PARAMS ((FILE *));
 252 extern void print_arm_disassembler_options PARAMS ((FILE *));
 253 extern void parse_arm_disassembler_option  PARAMS ((char *));
 254 extern int  get_arm_regname_num_options    PARAMS ((void));
 255 extern int  set_arm_regname_option         PARAMS ((int));
 256 extern int  get_arm_regnames               PARAMS ((int, const char **, const char **, const char ***));
 257
 258 /* Fetch the disassembler for a given BFD, if that support is available.  */
 259 extern disassembler_ftype disassembler  PARAMS ((bfd *));
 260
 261 /* Document any target specific options available from the disassembler.  */
 262 extern void disassembler_usage          PARAMS ((FILE *));
 263
 264 \f
 265 /* This block of definitions is for particular callers who read instructions
 266    into a buffer before calling the instruction decoder.  */
 267
 268 /* Here is a function which callers may wish to use for read_memory_func.
 269    It gets bytes from a buffer.  */
 270 extern int buffer_read_memory
 271   PARAMS ((bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *));
 272
 273 /* This function goes with buffer_read_memory.
 274    It prints a message using info->fprintf_func and info->stream.  */
 275 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
 276
 277
 278 /* Just print the address in hex.  This is included for completeness even
 279    though both GDB and objdump provide their own (to print symbolic
 280    addresses).  */
 281 extern void generic_print_address
 282   PARAMS ((bfd_vma, struct disassemble_info *));
 283
 284 /* Always true.  */
 285 extern int generic_symbol_at_address
 286   PARAMS ((bfd_vma, struct disassemble_info *));
 287
 288 /* Macro to initialize a disassemble_info struct.  This should be called
 289    by all applications creating such a struct.  */
 290 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
 291   (INFO).flavour = bfd_target_unknown_flavour, \
 292   (INFO).arch = bfd_arch_unknown, \
 293   (INFO).mach = 0, \
 294   (INFO).insn_sets = 0, \
 295   (INFO).endian = BFD_ENDIAN_UNKNOWN, \
 296   (INFO).octets_per_byte = 1, \
 297   INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
 298
 299 /* Call this macro to initialize only the internal variables for the
 300    disassembler.  Architecture dependent things such as byte order, or machine
 301    variant are not touched by this macro.  This makes things much easier for
 302    GDB which must initialize these things separately.  */
 303
 304 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
 305   (INFO).fprintf_func = (fprintf_ftype)(FPRINTF_FUNC), \
 306   (INFO).stream = (PTR)(STREAM), \
 307   (INFO).section = NULL, \
 308   (INFO).symbols = NULL, \
 309   (INFO).num_symbols = 0, \
 310   (INFO).private_data = NULL, \
 311   (INFO).buffer = NULL, \
 312   (INFO).buffer_vma = 0, \
 313   (INFO).buffer_length = 0, \
 314   (INFO).read_memory_func = buffer_read_memory, \
 315   (INFO).memory_error_func = perror_memory, \
 316   (INFO).print_address_func = generic_print_address, \
 317   (INFO).symbol_at_address_func = generic_symbol_at_address, \
 318   (INFO).flags = 0, \
 319   (INFO).bytes_per_line = 0, \
 320   (INFO).bytes_per_chunk = 0, \
 321   (INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
 322   (INFO).disassembler_options = NULL, \
 323   (INFO).insn_info_valid = 0
 324
 325 #ifdef __cplusplus
 326 }
 327 #endif