Replace libdisasm with capstone

src/third_party/libdisasm/x86_insn.c

-#include <stdio.h>
-#include <stdlib.h>
-
-#include "libdis.h"
-
-#ifdef _MSC_VER
-        #define snprintf        _snprintf
-        #define inline          __inline
-#endif
-
-int x86_insn_is_valid( x86_insn_t *insn ) {
-        if ( insn && insn->type != insn_invalid && insn->size > 0 ) {
-                return 1;
-        }
-
-        return 0;
-}
-
-uint32_t x86_get_address( x86_insn_t *insn ) {
-        x86_oplist_t *op_lst;
-        if (! insn || ! insn->operands ) {
-                return 0;
-        }
-
-        for (op_lst = insn->operands; op_lst; op_lst = op_lst->next ) {
-                if ( op_lst->op.type == op_offset ) {
-                        return op_lst->op.data.offset;
-                } else if ( op_lst->op.type == op_absolute ) {
-                        if ( op_lst->op.datatype == op_descr16 ) {
-                                return (uint32_t)
-                                        op_lst->op.data.absolute.offset.off16;
-                        }
-                        return op_lst->op.data.absolute.offset.off32;
-                }
-        }
-        
-        return 0;
-}
-
-int32_t x86_get_rel_offset( x86_insn_t *insn ) {
-        x86_oplist_t *op_lst;
-        if (! insn || ! insn->operands ) {
-                return 0;
-        }
-
-        for (op_lst = insn->operands; op_lst; op_lst = op_lst->next ) {
-                if ( op_lst->op.type == op_relative_near ) {
-                        return (int32_t) op_lst->op.data.relative_near;
-                } else if ( op_lst->op.type == op_relative_far ) {
-                        return op_lst->op.data.relative_far;
-                }
-        }
-        
-        return 0;
-}
-
-x86_op_t * x86_get_branch_target( x86_insn_t *insn ) {
-        x86_oplist_t *op_lst;
-        if (! insn || ! insn->operands ) {
-                return NULL;
-        }
-
-        for (op_lst = insn->operands; op_lst; op_lst = op_lst->next ) {
-                if ( op_lst->op.access & op_execute ) {
-                        return &(op_lst->op);
-                }
-        }
-        
-        return NULL;
-}
-x86_op_t * x86_get_imm( x86_insn_t *insn ) {
-        x86_oplist_t *op_lst;
-        if (! insn || ! insn->operands ) {
-                return NULL;
-        }
-
-        for (op_lst = insn->operands; op_lst; op_lst = op_lst->next ) {
-                if ( op_lst->op.type == op_immediate ) {
-                        return &(op_lst->op);
-                }
-        }
-        
-        return NULL;
-}
-
-#define IS_PROPER_IMM( x ) \
-        x->op.type == op_immediate && ! (x->op.flags & op_hardcode)
-                                                           
-
-/* if there is an immediate value in the instruction, return a pointer to
- * it */
-unsigned char * x86_get_raw_imm( x86_insn_t *insn ) {
-        int size, offset;
-        x86_op_t *op  = NULL;
-
-        if (! insn || ! insn->operands ) {
-                return(NULL);
-        }
-
-        /* a bit inelegant, but oh well... */
-        if ( IS_PROPER_IMM( insn->operands ) ) {
-                op = &insn->operands->op;
-        } else if ( insn->operands->next ) {
-                if ( IS_PROPER_IMM( insn->operands->next ) ) {
-                        op = &insn->operands->next->op;
-                } else if ( insn->operands->next->next && 
-                            IS_PROPER_IMM( insn->operands->next->next ) ) {
-                        op = &insn->operands->next->next->op;
-                }
-        }
-        
-        if (! op ) {
-                return( NULL );
-        }
-
-        /* immediate data is at the end of the insn */
-        size = x86_operand_size( op );
-        offset = insn->size - size;
-        return( &insn->bytes[offset] );
-}
-
-
-unsigned int x86_operand_size( x86_op_t *op ) {
-        switch (op->datatype ) {
-                case op_byte:    return 1;
-                case op_word:    return 2;
-                case op_dword:   return 4;
-                case op_qword:   return 8;
-                case op_dqword:  return 16;
-                case op_sreal:   return 4;
-                case op_dreal:   return 8;
-                case op_extreal: return 10;
-                case op_bcd:     return 10;
-                case op_ssimd:   return 16;
-                case op_dsimd:   return 16;
-                case op_sssimd:  return 4;
-                case op_sdsimd:  return 8;
-                case op_descr32: return 6;
-                case op_descr16: return 4;
-                case op_pdescr32: return 6;
-                case op_pdescr16: return 6;
-                case op_bounds16: return 4;
-                case op_bounds32: return 8;
-                case op_fpuenv16:  return 14;
-                case op_fpuenv32:  return 28;
-                case op_fpustate16:  return 94;
-                case op_fpustate32:  return 108;
-                case op_fpregset: return 512;
-                case op_fpreg: return 10;
-                case op_none: return 0;
-        }
-        return(4);      /* default size */
-}
-
-void x86_set_insn_addr( x86_insn_t *insn, uint32_t addr ) {
-        if ( insn ) insn->addr = addr;
-}
-
-void x86_set_insn_offset( x86_insn_t *insn, unsigned int offset ){
-        if ( insn ) insn->offset = offset;
-}
-
-void x86_set_insn_function( x86_insn_t *insn, void * func ){
-        if ( insn ) insn->function = func;
-}
-
-void x86_set_insn_block( x86_insn_t *insn, void * block ){
-        if ( insn ) insn->block = block;
-}
-
-void x86_tag_insn( x86_insn_t *insn ){
-        if ( insn ) insn->tag = 1;
-}
-
-void x86_untag_insn( x86_insn_t *insn ){
-        if ( insn ) insn->tag = 0;
-}
-
-int x86_insn_is_tagged( x86_insn_t *insn ){
-        return insn->tag;
-}
-