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/* Utility to test libdisasm. Disassembles from the start of a * file. */
/* Compile with `gcc -I. -O3 -ggdb -L. -ldisasm testdis.c -o testdis` */
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include "libdis.h"
int main(int argc, char *argv[])
{
int f, i = 0, n, size;
unsigned char *buf;
void *image;
x86_insn_t curr_inst;
x86_invariant_t inv;
struct stat sb;
char line[80];
if (argc < 2) {
printf("Usage: %s filename\n", argv[0]);
return 1;
}
f = open(argv[1], O_RDONLY);
fstat(f, &sb);
image = mmap(0, sb.st_size, PROT_READ, MAP_SHARED, f, 0);
if (image == (void*)-1) {
return (-1);
}
buf = (unsigned char *) image;
close(f);
printf("File name: %s\n", argv[1]);
x86_init( opt_none, NULL, NULL );
while (i < sb.st_size) {
memset(&curr_inst, 0, sizeof (x86_insn_t));
/* test invariant */
size = x86_invariant_disasm( buf + i, sb.st_size - i, &inv );
printf("%X\t", i);
for ( n = 0; n < size; n++ ) {
printf("%02X ", inv.bytes[n]);
}
printf("\t\t\t;invariant bytes (signature)\n");
/* test code */
printf("%X\t", i);
size = x86_disasm( buf, sb.st_size, 0, i, &curr_inst );
if (size) {
for (n = 0; n < 12; n++) {
if (n < size)
printf("%02X ", buf[i + n]);
else
printf(" ");
}
x86_format_insn( &curr_inst, line, 80, att_syntax );
printf( "%s\n", line );
i += size;
} else {
printf("invalid opcode %02X\n", buf[i]);
i++;
}
}
munmap(image, sb.st_size);
x86_cleanup();
return 0;
}
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