int main(int argc, char** argv) {
xed_machine_mode_enum_t mmode;
xed_bool_t long_mode = 1;
xed_ild_t ild;
xed_uint_t length = 0;
xed_uint_t i;
#define NTIMES 100
xed_uint64_t t1,t2,delta[NTIMES],tot;
unsigned char itext[15] = { 0xf2, 0x2e, 0x4f, 0x0F, 0x85, 0x99,
0x00, 0x00, 0x00 };
// initialize the XED tables -- one time.
xed_tables_init();
// The state of the machine -- required for decoding
if (long_mode) {
mmode=XED_MACHINE_MODE_LONG_64;
}
else {
mmode=XED_MACHINE_MODE_LEGACY_32;
}
for(i=0;i<NTIMES;i++) {
t1 = xed_get_time();
xed_ild_init(&ild, mmode, XED_CHIP_INVALID, itext, 15);
length = xed_instruction_length_decode(&ild);
t2 = xed_get_time();
delta[i] = t2-t1;
}
tot = 0;
for(i=0;i<NTIMES;i++) {
printf("Decode time[%3d] = " XED_FMT_LU "\n", i,delta[i]);
if (i>0)
tot += delta[i];
}
printf("Avg time = " XED_FMT_LU "\n", tot/(NTIMES-1));
print_ild(&ild);
printf("length = %d\n",length);
return 0;
(void) argc; (void) argv; //pacify compiler
}
int main(int argc, char** argv) {
xed_ild_t ild;
xed_uint_t uargc = (xed_uint_t)argc;
xed_uint_t length = 0;
xed_uint_t dlen = 0;
xed_uint_t i,j,input_nibbles=0;
xed_uint8_t itext[XED_MAX_INSTRUCTION_BYTES];
char src[MAX_INPUT_NIBBLES+1];
xed_state_t dstate;
xed_decoded_inst_t xedd;
xed_uint_t first_argv;
xed_uint_t bytes;
xed_error_enum_t xed_error;
xed_chip_enum_t chip = XED_CHIP_INVALID;
int already_set_mode = 0;
// initialize the XED tables -- one time.
xed_tables_init();
xed_state_zero(&dstate);
first_argv = 1;
dstate.mmode=XED_MACHINE_MODE_LEGACY_32;
dstate.stack_addr_width=XED_ADDRESS_WIDTH_32b;
for(i=1;i< uargc;i++) {
if (strcmp(argv[i], "-64") == 0) {
assert(already_set_mode == 0);
already_set_mode = 1;
dstate.mmode=XED_MACHINE_MODE_LONG_64;
first_argv++;
}
else if (strcmp(argv[i], "-16") == 0) {
assert(already_set_mode == 0);
already_set_mode = 1;
dstate.mmode=XED_MACHINE_MODE_LEGACY_16;
dstate.stack_addr_width=XED_ADDRESS_WIDTH_16b;
first_argv++;
}
else if (strcmp(argv[i], "-s16") == 0) {
already_set_mode = 1;
dstate.stack_addr_width=XED_ADDRESS_WIDTH_16b;
first_argv++;
}
else if (strcmp(argv[i], "-chip") == 0) {
assert(i+1 < uargc);
chip = str2xed_chip_enum_t(argv[i+1]);
printf("Setting chip to %s\n", xed_chip_enum_t2str(chip));
assert(chip != XED_CHIP_INVALID);
first_argv+=2;
}
}
assert(first_argv < uargc);
xed_decoded_inst_zero_set_mode(&xedd, &dstate);
if (first_argv >= uargc) {
printf("Need some hex instruction nibbles");
exit(1);
}
for(i=first_argv;i<uargc;i++) {
for(j=0;argv[i][j];j++) {
assert(input_nibbles < MAX_INPUT_NIBBLES);
src[input_nibbles] = argv[i][j];
input_nibbles++;
}
}
src[input_nibbles] = 0;
if (input_nibbles & 1) {
printf("Need an even number of nibbles");
exit(1);
}
bytes = xed_convert_ascii_to_hex(src, itext, XED_MAX_INSTRUCTION_BYTES);
printf("Attempting to decode: ");
for(i=0;i<bytes;i++) {
printf("%02x", itext[i]);
}
printf("\n");
xed_ild_init(&ild, dstate.mmode, chip, itext, XED_MAX_INSTRUCTION_BYTES);
length = xed_instruction_length_decode(&ild);
print_ild(&ild);
printf("ILD length = %d\n",length);
xed_decoded_inst_set_input_chip(&xedd, chip);
xed_error = xed_decode(&xedd,
XED_REINTERPRET_CAST(const xed_uint8_t*,itext),
bytes);
switch(xed_error) {
case XED_ERROR_NONE:
break;
case XED_ERROR_BUFFER_TOO_SHORT:
printf("Not enough bytes provided\n");
exit(1);
case XED_ERROR_INVALID_FOR_CHIP:
printf("The instruction was not valid for the specified chip.\n");
exit(1);
case XED_ERROR_GENERAL_ERROR:
printf("Could not decode given input.\n");
exit(1);
default:
printf("Unhandled error code %s\n",xed_error_enum_t2str(xed_error));
exit(1);
}
dlen = xed_decoded_inst_get_length(&xedd);
printf ("Traditional length = %d\n", dlen);
if (dlen != length) {
printf ("Length error\n");
exit(1);
}
printf ("Length matched\n");
return 0;
}
void xed_disas_test(xed_disas_info_t di) {
static int first = 1;
#if !defined(XED_ILD_ONLY)
xed_uint64_t errors = 0;
#endif
unsigned int m;
unsigned char* z;
unsigned char* zlimit;
unsigned int length;
int skipping;
int last_all_zeros;
unsigned int i;
int okay;
//for ILD comparing perf measurements
#if defined(XED_ILD_ONLY) && defined(XED_ILD)
#include "xed-ild.h"
xed_ild_t ild_data = {0};
#endif
//For XED_ILD_ONLY we want to run only ILD decoding to get
//better timing precision. That means, that we don't run xed_decode
//and don't use xedd at all
#if !defined(XED_ILD_ONLY)
xed_decoded_inst_t xedd;
#endif
xed_uint64_t runtime_instruction_address;
xed_dot_graph_supp_t* gs = 0;
xed_bool_t graph_empty = 1;
//#define XED_USE_DECODE_CACHE
#if defined(XED_USE_DECODE_CACHE)
xed_decode_cache_t cache;
xed_uint32_t n_cache_entries = 16*1024;
xed_decode_cache_entry_t* cache_entries =
(xed_decode_cache_entry_t*) malloc(n_cache_entries *
sizeof(xed_decode_cache_entry_t));
xed_decode_cache_initialize(&cache, cache_entries, n_cache_entries);
#endif
if (di.dot_graph_output) {
xed_syntax_enum_t syntax = XED_SYNTAX_INTEL;
gs = xed_dot_graph_supp_create(syntax);
}
if (first) {
xed_decode_stats_zero(&xed_stats, &di);
#if defined(XED_ILD_ONLY) && defined(XED_ILD) //for ILD comparing
xed_decode_stats_zero(&ild_stats, &di);
#endif
first = 0;
}
m = di.ninst; // number of things to decode
z = di.a;
if (di.runtime_vaddr_disas_start)
if (di.runtime_vaddr_disas_start > di.runtime_vaddr)
z = (di.runtime_vaddr_disas_start - di.runtime_vaddr) + di.a;
zlimit = 0;
if (di.runtime_vaddr_disas_end) {
if (di.runtime_vaddr_disas_end > di.runtime_vaddr)
zlimit = (di.runtime_vaddr_disas_end - di.runtime_vaddr) + di.a;
else /* end address is before start of this region -- skip it */
goto finish;
}
if (z >= di.q) /* start pointer is after end of section */
goto finish;
// for skipping long strings of zeros
skipping = 0;
last_all_zeros = 0;
for( i=0; i<m;i++)
{
int ilim,elim;
if (zlimit && z >= zlimit) {
if (di.xml_format == 0)
printf("# end of range.\n");
break;
}
if (z >= di.q) {
if (di.xml_format == 0)
#if !defined(XED_ILD_ONLY)
printf("# end of text section.\n");
#endif
break;
}
/* if we get near the end of the section, clip the itext length */
ilim = 15;
elim = di.q - z;
if (elim < ilim)
ilim = elim;
if (CLIENT_VERBOSE3) {
printf("\n==============================================\n");
printf("Decoding instruction " XED_FMT_U "\n", i);
printf("==============================================\n");
}
// if we get two full things of 0's in a row, start skipping.
if (all_zeros((xed_uint8_t*) z, ilim))
{
if (skipping) {
z = z + ilim;
continue;
}
else if (last_all_zeros) {
#if !defined(XED_ILD_ONLY)
printf("...\n");
#endif
z = z + ilim;
skipping = 1;
continue;
}
else
last_all_zeros = 1;
}
else
{
skipping = 0;
last_all_zeros = 0;
}
runtime_instruction_address = ((xed_uint64_t)(z-di.a)) +
di.runtime_vaddr;
if (CLIENT_VERBOSE3) {
char tbuf[XED_HEX_BUFLEN];
printf("Runtime Address " XED_FMT_LX ,runtime_instruction_address);
xed_print_hex_line(tbuf, (xed_uint8_t*) z, ilim,XED_HEX_BUFLEN);
printf(" [%s]\n", tbuf);
}
okay = 0;
length = 0;
//For XED_ILD_ONLY we want to run only ILD decoding to get
//better timing precision. That means, that we don't run xed_decode
//and won't use xedd at all
#if !defined(XED_ILD_ONLY)
xed_decoded_inst_zero_set_mode(&xedd, di.dstate);
if (di.late_init)
(*di.late_init)(&xedd);
#endif
if ( di.decode_only )
{
xed_uint64_t t1;
xed_uint64_t t2;
xed_error_enum_t xed_error = XED_ERROR_NONE;
#if !defined(XED_ILD_ONLY)
t1 = xed_get_time();
#if defined(XED_USE_DECODE_CACHE)
xed_error = xed_decode_cache(&xedd,
XED_REINTERPRET_CAST(const xed_uint8_t*,z),
ilim,
&cache);
#else
xed_error = xed_decode(&xedd,
XED_REINTERPRET_CAST(const xed_uint8_t*,z),
ilim);
#endif
t2 = xed_get_time();
okay = (xed_error == XED_ERROR_NONE);
xed_decode_stats_reset(&xed_stats, t1, t2);
length = xed_decoded_inst_get_length(&xedd);
#else //defined(XED_ILD_ONLY)
xed_machine_mode_enum_t mmode;
const xed_uint8_t* itext = z;
okay = 1;
mmode = xed_state_get_machine_mode(di.dstate);
xed_ild_init(&ild_data, mmode,
xed_decoded_inst_get_input_chip(&xedd),
itext, ILD_ITEXT_MAX_BYTES);
t1 = xed_get_time();
xed_instruction_length_decode(&ild_data);
t2 = xed_get_time();
xed_decode_stats_reset(&ild_stats, t1, t2);
length = ild_data.length;
#endif //defined(XED_ILD_ONLY)
if (okay && length == 0) {
printf("Zero length on decoded instruction!\n");
xed_decode_error( runtime_instruction_address,
z-di.a, z, xed_error);
xedex_derror("Dieing");
}
if (di.resync && di.symfn) {
xed_bool_t resync = 0;
unsigned int x;
for(x=1;x<length;x++) {
char* name = (*di.symfn)(runtime_instruction_address+x,
di.caller_symbol_data);
if (name) {
char buf[XED_HEX_BUFLEN];
/* bad news. We found a symbol in the middle of an
* instruction. That probably means decoding is
* messed up. This usually happens because of
* data-in the code/text section. We should reject
* the current instruction and pick up at the
* symbol address. */
printf("ERROR: found symbol in the middle of"
" an instruction. Resynchronizing...\n");
printf("ERROR: Rejecting: [");
xed_print_hex_line(buf, z, x, XED_HEX_BUFLEN);
printf("%s]\n",buf);
z += x;
resync = 1;
break;
}
}
if (resync)
continue;
}
xed_stats.total_ilen += length;
//we don't want to print out disassembly with ILD perf
#if !defined(XED_ILD_ONLY)
if (okay) {
if (CLIENT_VERBOSE1) {
char tbuf[XED_TMP_BUF_LEN];
xed_decoded_inst_dump(&xedd,tbuf, XED_TMP_BUF_LEN);
printf("%s\n",tbuf);
}
if (CLIENT_VERBOSE) {
char buffer[XED_TMP_BUF_LEN];
unsigned int dec_len;
unsigned int sp;
if (di.symfn) {
char* name = (*di.symfn)(runtime_instruction_address,
di.caller_symbol_data);
if (name) {
if (di.xml_format)
printf("\n<SYM>%s</SYM>\n", name);
else
printf("\nSYM %s:\n", name);
}
}
if (di.xml_format) {
printf("<ASMLINE>\n");
printf(" <ADDR>" XED_FMT_LX "</ADDR>\n",
runtime_instruction_address);
printf(" <CATEGORY>%s</CATEGORY>\n",
xed_category_enum_t2str(
xed_decoded_inst_get_category(&xedd)));
printf(" <EXTENSION>%s</EXTENSION>\n",
xed_extension_enum_t2str(
xed_decoded_inst_get_extension(&xedd)));
printf(" <ITEXT>");
dec_len = xed_decoded_inst_get_length(&xedd);
xed_print_hex_line(buffer, (xed_uint8_t*) z,
dec_len, XED_TMP_BUF_LEN);
printf("%s</ITEXT>\n",buffer);
buffer[0]=0;
disassemble(buffer,XED_TMP_BUF_LEN,
&xedd, runtime_instruction_address,
di.caller_symbol_data);
printf( " %s\n",buffer);
printf("</ASMLINE>\n");
}
else {
printf("XDIS " XED_FMT_LX ": ",
runtime_instruction_address);
printf("%-9s ",
xed_category_enum_t2str(
xed_decoded_inst_get_category(&xedd)));
printf("%-6s ",
xed_extension_enum_t2str(
xed_decoded_inst_get_extension(&xedd)));
dec_len = xed_decoded_inst_get_length(&xedd);
xed_print_hex_line(buffer, (xed_uint8_t*) z,
dec_len, XED_HEX_BUFLEN);
printf("%s",buffer);
// pad out the instruction bytes
for ( sp=dec_len; sp < 12; sp++)
printf(" ");
printf(" ");
buffer[0]=0;
disassemble(buffer,XED_TMP_BUF_LEN,
&xedd,
runtime_instruction_address,
di.caller_symbol_data);
printf( "%s",buffer);
if (gs) {
graph_empty = 0;
xed_dot_graph_add_instruction(
gs,
&xedd,
runtime_instruction_address,
di.caller_symbol_data);
}
if (di.line_number_info_fn)
(*di.line_number_info_fn)(runtime_instruction_address);
printf( "\n");
}
}
}
else {
errors++;
xed_decode_error( runtime_instruction_address, z-di.a, z,
xed_error);
// just give a length of 1B to see if we can restart decode...
length = 1;
}
}
#if defined(XED_ENCODER)
else
{
