unicorn/samples/sample_sparc.c
2015-08-28 20:03:36 -07:00

88 lines
2.5 KiB
C

/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh, 2015 */
/* Sample code to demonstrate how to emulate Sparc code */
#include <inttypes.h>
#include <unicorn/unicorn.h>
// code to be emulated
#define SPARC_CODE "\x86\x00\x40\x02" // add %g1, %g2, %g3;
//#define SPARC_CODE "\xbb\x70\x00\x00" // illegal code
// memory address where emulation starts
#define ADDRESS 0x10000
static void hook_block(uch handle, uint64_t address, uint32_t size, void *user_data)
{
printf(">>> Tracing basic block at 0x%"PRIx64 ", block size = 0x%x\n", address, size);
}
static void hook_code(uch handle, uint64_t address, uint32_t size, void *user_data)
{
printf(">>> Tracing instruction at 0x%"PRIx64 ", instruction size = 0x%x\n", address, size);
}
static void test_sparc(void)
{
uch handle;
uc_err err;
uch trace1, trace2;
int g1 = 0x1230; // G1 register
int g2 = 0x6789; // G2 register
int g3 = 0x5555; // G3 register
printf("Emulate SPARC code\n");
// Initialize emulator in Sparc mode
err = uc_open(UC_ARCH_SPARC, UC_MODE_BIG_ENDIAN, &handle);
if (err) {
printf("Failed on uc_open() with error returned: %u (%s)\n",
err, uc_strerror(err));
return;
}
// map 2MB memory for this emulation
uc_mem_map(handle, ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
// write machine code to be emulated to memory
uc_mem_write(handle, ADDRESS, (uint8_t *)SPARC_CODE, sizeof(SPARC_CODE) - 1);
// initialize machine registers
uc_reg_write(handle, UC_SPARC_REG_G1, &g1);
uc_reg_write(handle, UC_SPARC_REG_G2, &g2);
uc_reg_write(handle, UC_SPARC_REG_G3, &g3);
// tracing all basic blocks with customized callback
uc_hook_add(handle, &trace1, UC_HOOK_BLOCK, hook_block, NULL, (uint64_t)1, (uint64_t)0);
// tracing one instruction at ADDRESS with customized callback
uc_hook_add(handle, &trace2, UC_HOOK_CODE, hook_code, NULL, (uint64_t)ADDRESS, (uint64_t)ADDRESS);
// emulate machine code in infinite time (last param = 0), or when
// finishing all the code.
err = uc_emu_start(handle, ADDRESS, ADDRESS + sizeof(SPARC_CODE) -1, 0, 0);
if (err) {
printf("Failed on uc_emu_start() with error returned: %u (%s)\n",
err, uc_strerror(err));
}
// now print out some registers
printf(">>> Emulation done. Below is the CPU context\n");
uc_reg_read(handle, UC_SPARC_REG_G3, &g3);
printf(">>> G3 = 0x%x\n", g3);
uc_close(&handle);
}
int main(int argc, char **argv, char **envp)
{
test_sparc();
return 0;
}