NAME

       x86_format_insn,  x86_format_mnemonic,  x86_format_operand, x86_format_header - generate a
       string representation of a disassembled instruction.

SYNOPSIS

       #include <libdis.h>

       int x86_format_operand(x86_op_t *op, char *buf, int len,
            enum x86_asm_format format);

       int x86_format_mnemonic(x86_insn_t *insn, char *buf, int len,
            enum x86_asm_format format );

       int x86_format_insn(x86_insn_t *insn, char *buf, int len,
            enum x86_asm_format format );

       int x86_format_header( char *buf, int len,
            enum x86_asm_format format);

DESCRIPTION

       x86_format_insn  generates  an  assembly-langauge  representation  of   the   disassembled
       instruction   in   the   specified   format.   x86_format_mnemonic   and   are  called  by
       x86_format_operand to format the instruction mnemonic and operands, respectively, but they
       may  be invoked directly by the user. Each of these routines fills buffer buf of len bytes
       with an ASCII string representing the instruction, mnemonic, or operand.
       x86_format_header fills buffer buf of len  bytes  with  a  description  of  the  specified
       format.

       The following formats are available:

            native_syntax : Intel syntax with address and hex
            intel_syntax : Intel x86 syntax
            att_syntax : AT&T Syntax
            raw_syntax : Pipe-delimited internal format
            xml_syntax : XML representation

       Native syntax uses dest, src ordering and displays
       the address, opcode bytes, and instruction in tab-delimited
       format:
              "ADDRESS\tBYTES\tMNEMONIC\tDEST\tSRC\tIMM"

       Intel  syntax  uses  dest,  src  ordering  and  displays  the instruction in tab-and-comma
       delimited format:
              "MNEMONIC\tDEST, SRC, IMM"

       AT&T syntax uses src, destordering and displays the instruction in tab-and-comma delimited
       format:
              "MNEMONIC\tSRC, DEST, IMM"

       Raw syntax displays all details of the instruction in pipe-delimited format:
              "ADDRESS|OFFSET|SIZE|BYTES|PREFIX|PREFIX_STRING|

       XML syntax displays all details of the instruction in XML format:
               GROUP|TYPE|NOTES|MNEMONIC|CPU|ISA|FLAGS_SET|
               FLAGS_TESTED|STACK_MOD|STACK_MOD_VAL"
               [|OP_TYPE|OP_DATATYPE|OP_ACCESS|OP_FLAGS|OP]*"
               "<x86_insn>
                      <address rva= offset= size= bytes=/>
                      <prefix type= string=/>
                      <mnemonic group= type= string= cpu= isa= note= />
                      <flags type=set>
                         <flag name=>
                      </flags>
                      <stack_mod val= >
                      <flags type=tested>
                         <flag name=>
                      </flags>
                      <operand name=>
                         <register name= type= size=/>
                         <immediate type= value=/>
                         <relative_offset value=/>
                         <absolute_address value=>
                            <segment value=/>
                         </absolute_address>
                         <address_expression>
                            <segment value=/>
                            <base>
                               <register name= type= size=/>
                            </base>
                            <index>
                               <register name= type= size=/>
                            </index>
                            <scale>
                               <immediate value=/>
                            </scale>
                            <displacement>
                               <immediate value=/>
                               <address value=/>
                            </displacement>
                         </address_expression>
                         <segment_offset>
                            <address value=/>
                         </segment_offset>
                      </operand>
                   </x86_insn>"

EXAMPLES

       The following will print insn in Intel syntax:

       void att_print( x86_insn_t *insn ) {
               char line[256];
               x86_format_insn(insn, line, 256, intel_syntax);
               printf( "%s\n", line);
       }

       The following routine formats an instruction manually using AT&T syntax:

       void manual_print( x86_insn_t *insn, void *arg ) {
               char buf[128];
               int i;
               printf("%08lX", insn->addr );
               for ( i = 0; i < 10; i++ ) {
                       if ( i < insn->size ) {
                               printf(" %02X", insn->bytes[i]);
                       } else {
                               printf("   ");
                       }
               }
               x86_format_mnemonic( insn, buf, 128, att_syntax );
               printf( "\t%s\t", buf );
               if ( insn->operands[op_src].type != op_unused ) {
                       x86_format_operand( &insn->operands[op_src],
                                      insn, buf, 128, att_syntax );
                       /* if src is present, so is dest */
                       printf("%s, ", buf);
               }
               if ( insn->operands[op_dest].type != op_unused ) {
                       x86_format_operand( &insn->operands[op_dest],
                                      insn, buf, 128, att_syntax );
                       printf("%s", buf);
               }
               if ( insn->operands[op_imm].type != op_unused ) {
                       x86_format_operand( &insn->operands[op_imm],
                                      insn, buf, 128, att_syntax );
                       /* if src is present, so is dest */
                       printf(", %s", buf);
               }
               printf("\n");
       }

SEE ALSO

       libdisasm(7), x86_disasm(3), x86_init(3), x86dis(1)