void disassemble(char* buf,
int buflen,
xed_decoded_inst_t* xedd,
xed_uint64_t runtime_instruction_address,
void* caller_data)
{
int blen = buflen;
if(xed_syntax)
{
blen = fn_disassemble_xed(XED_SYNTAX_XED, buf, blen,
xedd, runtime_instruction_address,
caller_data);
if(att_syntax || intel_syntax)
blen = xed_strncat(buf, " | ", blen);
}
if(att_syntax)
{
char* xbuf = buf + strlen(buf);
blen = fn_disassemble_xed(XED_SYNTAX_ATT, xbuf, blen,
xedd, runtime_instruction_address,
caller_data);
if(intel_syntax)
blen = xed_strncat(buf, " | ", blen);
}
if(intel_syntax)
{
char* ybuf = buf + strlen(buf);
blen = fn_disassemble_xed(XED_SYNTAX_INTEL, ybuf, blen,
xedd, runtime_instruction_address,
caller_data);
}
}
int
fn_disassemble_xed(xed_syntax_enum_t syntax,
char* buf,
int buflen,
xed_decoded_inst_t* xedd,
xed_uint64_t runtime_instruction_address,
void* caller_data)
{
/* the caller_data is for symbolic disam */
char buffer[XED_TMP_BUF_LEN];
int blen = buflen;
int ok = xed_format_context(syntax, xedd,
buffer, XED_TMP_BUF_LEN,
runtime_instruction_address, caller_data);
if(ok)
blen = xed_strncpy(buf, buffer, buflen);
else
{
blen = buflen;
blen = xed_strncpy(buf, "Error disassembling ", blen);
blen = xed_strncat(buf, xed_syntax_enum_t2str(syntax), blen);
blen = xed_strncat(buf, " syntax.", blen);
}
return blen;
}
static char* append3(const char* s1, const char* s2, const char* s3) {
xed_uint_t n = 1;
char* p = 0;
if (s1) n += xed_strlen(s1);
if (s2) n += xed_strlen(s2);
if (s3) n += xed_strlen(s3);
p = (char*) malloc(sizeof(char)*n);
if (s1) n=xed_strncpy(p,s1,n);
if (s2) n=xed_strncat(p,s2,n);
if (s3) n=xed_strncat(p,s3,n);
return p;
}
static char* xed_strdup(char* src) {
unsigned int n = (unsigned int)strlen(src)+1; /* plus one for null */
char* dst = new char[n];
dst[0]=0; /* start w/ a null */
xed_strncat(dst, src, n);
return dst;
}
xed_uint_t disas_decode_encode_binary(const xed_state_t* dstate,
const xed_uint8_t* decode_text_binary,
const unsigned int bytes,
xed_decoded_inst_t* xedd,
xed_uint64_t runtime_address)
{
// decode then encode
unsigned int retval_olen = 0;
// decode it...
xed_bool_t decode_okay = disas_decode_binary(dstate, decode_text_binary,
bytes, xedd,
runtime_address);
if(decode_okay)
{
xed_error_enum_t encode_okay;
xed_uint64_t t1, t2;
unsigned int enc_olen, ilen = XED_MAX_INSTRUCTION_BYTES;
xed_uint8_t array[XED_MAX_INSTRUCTION_BYTES];
// they are basically the same now
xed_encoder_request_t* enc_req = xedd;
// convert decode structure to proper encode structure
xed_encoder_request_init_from_decode(xedd);
// encode it again...
t1 = xed_get_time();
encode_okay = xed_encode(enc_req, array, ilen, &enc_olen);
t2 = xed_get_time();
if(encode_okay != XED_ERROR_NONE)
{
if(CLIENT_VERBOSE)
{
char buf[XED_TMP_BUF_LEN];
char buf2[XED_TMP_BUF_LEN];
int blen = XED_TMP_BUF_LEN;
xed_encode_request_print(enc_req, buf, XED_TMP_BUF_LEN);
blen = xed_strncpy(buf2, "Could not re-encode: ", blen);
blen = xed_strncat(buf2, buf, blen);
blen = xed_strncat(buf2, "\nError code was: ", blen);
blen = xed_strncat(buf2,
xed_error_enum_t2str(encode_okay), blen);
blen = xed_strncat(buf2, "\n", blen);
xedex_dwarn(buf2);
}
}
else
{
retval_olen = enc_olen;
// See if it matched the original...
if(CLIENT_VERBOSE)
{
char buf[XED_HEX_BUFLEN];
xed_uint_t dec_length;
xed_print_hex_line(buf, array, enc_olen, XED_HEX_BUFLEN);
printf("Encodable! %s\n", buf);
xed_decode_stats_reset(&xed_enc_stats, t1, t2);
dec_length = xed_decoded_inst_get_length(xedd);
if((enc_olen != dec_length ||
memcmp(decode_text_binary, array, enc_olen)))
{
char buf2[XED_TMP_BUF_LEN];
char buf3[XED_TMP_BUF_LEN];
printf("Discrepenacy after re-encoding. dec_len= "
XED_FMT_U " ", dec_length);
xed_print_hex_line(buf, decode_text_binary,
dec_length, XED_HEX_BUFLEN);
printf("[%s] ", buf);
printf("enc_olen= " XED_FMT_U "", enc_olen);
xed_print_hex_line(buf, array, enc_olen, XED_HEX_BUFLEN);
printf(" [%s] ", buf);
printf("for instruction: ");
xed_decoded_inst_dump(xedd, buf3, XED_TMP_BUF_LEN);
printf("%s\n", buf3);
printf("vs Encode request: ");
xed_encode_request_print(enc_req, buf2, XED_TMP_BUF_LEN);
printf("%s\n", buf2);
}
else
printf("Identical re-encoding\n");
}
}
}
return retval_olen;
}
