include/dis-asm.h

   1 /* Interface between the opcode library and its callers.
   2    Written by Cygnus Support, 1993.
   3
   4    The opcode library (libopcodes.a) provides instruction decoders for
   5    a large variety of instruction sets, callable with an identical
   6    interface, for making instruction-processing programs more independent
   7    of the instruction set being processed.  */
   8
   9 #ifndef DIS_ASM_H
  10 #define DIS_ASM_H
  11
  12 #include <stdio.h>
  13 #include "bfd.h"
  14
  15 typedef int (*fprintf_ftype) PARAMS((FILE*, const char*, ...));
  16
  17 enum dis_insn_type {
  18   dis_noninsn,                  /* Not a valid instruction */
  19   dis_nonbranch,                /* Not a branch instruction */
  20   dis_branch,                   /* Unconditional branch */
  21   dis_condbranch,               /* Conditional branch */
  22   dis_jsr,                      /* Jump to subroutine */
  23   dis_condjsr,                  /* Conditional jump to subroutine */
  24   dis_dref,                     /* Data reference instruction */
  25   dis_dref2                     /* Two data references in instruction */
  26 };
  27
  28 /* This struct is passed into the instruction decoding routine,
  29    and is passed back out into each callback.  The various fields are used
  30    for conveying information from your main routine into your callbacks,
  31    for passing information into the instruction decoders (such as the
  32    addresses of the callback functions), or for passing information
  33    back from the instruction decoders to their callers.
  34
  35    It must be initialized before it is first passed; this can be done
  36    by hand, or using one of the initialization macros below.  */
  37
  38 typedef struct disassemble_info {
  39   fprintf_ftype fprintf_func;
  40   FILE *stream;
  41   PTR application_data;
  42
  43   /* For use by the disassembler.  */
  44   int flags;
  45   PTR private_data;
  46
  47   /* Function used to get bytes to disassemble.  MEMADDR is the
  48      address of the stuff to be disassembled, MYADDR is the address to
  49      put the bytes in, and LENGTH is the number of bytes to read.
  50      INFO is a pointer to this struct.
  51      Returns an errno value or 0 for success.  */
  52   int (*read_memory_func)
  53     PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int length,
  54              struct disassemble_info *info));
  55
  56   /* Function which should be called if we get an error that we can't
  57      recover from.  STATUS is the errno value from read_memory_func and
  58      MEMADDR is the address that we were trying to read.  INFO is a
  59      pointer to this struct.  */
  60   void (*memory_error_func)
  61     PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
  62
  63   /* Function called to print ADDR.  */
  64   void (*print_address_func)
  65     PARAMS ((bfd_vma addr, struct disassemble_info *info));
  66
  67   /* These are for buffer_read_memory.  */
  68   bfd_byte *buffer;
  69   bfd_vma buffer_vma;
  70   int buffer_length;
  71
  72   /* Results from instruction decoders.  Not all decoders yet support
  73      this information.  This info is set each time an instruction is
  74      decoded, and is only valid for the last such instruction.
  75
  76      To determine whether this decoder supports this information, set
  77      insn_info_valid to 0, decode an instruction, then check it.  */
  78
  79   char insn_info_valid;         /* Branch info has been set. */
  80   char branch_delay_insns;      /* How many sequential insn's will run before
  81                                    a branch takes effect.  (0 = normal) */
  82   char data_size;               /* Size of data reference in insn, in bytes */
  83   enum dis_insn_type insn_type; /* Type of instruction */
  84   bfd_vma target;               /* Target address of branch or dref, if known;
  85                                    zero if unknown.  */
  86   bfd_vma target2;              /* Second target address for dref2 */
  87
  88 } disassemble_info;
  89
  90 \f
  91 /* Standard disassemblers.  Disassemble one instruction at the given
  92    target address.  Return number of bytes processed.  */
  93 typedef int (*disassembler_ftype)
  94      PARAMS((bfd_vma, disassemble_info *));
  95
  96 extern int print_insn_big_mips          PARAMS ((bfd_vma, disassemble_info*));
  97 extern int print_insn_little_mips       PARAMS ((bfd_vma, disassemble_info*));
  98 extern int print_insn_i386              PARAMS ((bfd_vma, disassemble_info*));
  99 extern int print_insn_m68k              PARAMS ((bfd_vma, disassemble_info*));
 100 extern int print_insn_z8001             PARAMS ((bfd_vma, disassemble_info*));
 101 extern int print_insn_z8002             PARAMS ((bfd_vma, disassemble_info*));
 102 extern int print_insn_h8300             PARAMS ((bfd_vma, disassemble_info*));
 103 extern int print_insn_h8300h            PARAMS ((bfd_vma, disassemble_info*));
 104 extern int print_insn_h8500             PARAMS ((bfd_vma, disassemble_info*));
 105 extern int print_insn_alpha             PARAMS ((bfd_vma, disassemble_info*));
 106 /* start-sanitize-arc */
 107 extern int print_insn_arc               PARAMS ((bfd_vma, disassemble_info*));
 108 /* end-sanitize-arc */
 109 extern int print_insn_arm               PARAMS ((bfd_vma, disassemble_info*));
 110 extern int print_insn_sparc             PARAMS ((bfd_vma, disassemble_info*));
 111 extern int print_insn_big_a29k          PARAMS ((bfd_vma, disassemble_info*));
 112 extern int print_insn_little_a29k       PARAMS ((bfd_vma, disassemble_info*));
 113 extern int print_insn_i960              PARAMS ((bfd_vma, disassemble_info*));
 114 extern int print_insn_sh                PARAMS ((bfd_vma, disassemble_info*));
 115 extern int print_insn_shl               PARAMS ((bfd_vma, disassemble_info*));
 116 extern int print_insn_hppa              PARAMS ((bfd_vma, disassemble_info*));
 117 extern int print_insn_m88k              PARAMS ((bfd_vma, disassemble_info*));
 118 extern int print_insn_ns32k             PARAMS ((bfd_vma, disassemble_info*));
 119 extern int print_insn_big_powerpc       PARAMS ((bfd_vma, disassemble_info*));
 120 extern int print_insn_little_powerpc    PARAMS ((bfd_vma, disassemble_info*));
 121 extern int print_insn_rs6000            PARAMS ((bfd_vma, disassemble_info*));
 122 extern int print_insn_w65               PARAMS ((bfd_vma, disassemble_info*));
 123
 124 /* Fetch the disassembler for a given BFD, if that support is available.  */
 125 extern disassembler_ftype disassembler  PARAMS ((bfd *));
 126
 127 \f
 128 /* This block of definitions is for particular callers who read instructions
 129    into a buffer before calling the instruction decoder.  */
 130
 131 /* Here is a function which callers may wish to use for read_memory_func.
 132    It gets bytes from a buffer.  */
 133 extern int buffer_read_memory
 134   PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
 135
 136 /* This function goes with buffer_read_memory.
 137    It prints a message using info->fprintf_func and info->stream.  */
 138 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
 139
 140
 141 /* Just print the address is hex.  This is included for completeness even
 142    though both GDB and objdump provide their own (to print symbolic
 143    addresses).  */
 144 extern void generic_print_address
 145   PARAMS ((bfd_vma, struct disassemble_info *));
 146
 147 #define INIT_DISASSEMBLE_INFO(INFO, STREAM) \
 148   (INFO).fprintf_func = (fprintf_ftype)fprintf, \
 149   (INFO).stream = (STREAM), \
 150   (INFO).buffer = NULL, \
 151   (INFO).buffer_vma = 0, \
 152   (INFO).buffer_length = 0, \
 153   (INFO).read_memory_func = buffer_read_memory, \
 154   (INFO).memory_error_func = perror_memory, \
 155   (INFO).print_address_func = generic_print_address, \
 156   (INFO).insn_info_valid = 0
 157
 158
 159
 160 \f
 161 /* This block of definitions is for calling the instruction decoders
 162    from GDB.  */
 163
 164 /* GDB--Like target_read_memory, but slightly different parameters.  */
 165 extern int
 166 dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int len,
 167                              disassemble_info *info));
 168
 169 /* GDB--Like memory_error with slightly different parameters.  */
 170 extern void
 171 dis_asm_memory_error
 172   PARAMS ((int status, bfd_vma memaddr, disassemble_info *info));
 173
 174 /* GDB--Like print_address with slightly different parameters.  */
 175 extern void
 176 dis_asm_print_address PARAMS ((bfd_vma addr, disassemble_info *info));
 177
 178 #define GDB_INIT_DISASSEMBLE_INFO(INFO, STREAM) \
 179   (INFO).fprintf_func = (fprintf_ftype)fprintf_filtered, \
 180   (INFO).stream = (STREAM), \
 181   (INFO).read_memory_func = dis_asm_read_memory, \
 182   (INFO).memory_error_func = dis_asm_memory_error, \
 183   (INFO).print_address_func = dis_asm_print_address, \
 184   (INFO).insn_info_valid = 0
 185
 186 #endif /* ! defined (DIS_ASM_H) */