mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-10-20 20:38:19 +02:00
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
#include <setjmp.h>
|
|
#include <inttypes.h>
|
|
#include <cmocka.h>
|
|
#include <unicorn/unicorn.h>
|
|
|
|
// callback for tracing basic blocks
|
|
static void hook_block(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
|
|
{
|
|
//printf(">>> Tracing basic block at 0x%"PRIx64 ", block size = 0x%x\n", address, size);
|
|
}
|
|
|
|
// callback for tracing instruction
|
|
static void hook_code(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
|
|
{
|
|
//int eflags;
|
|
//printf(">>> Tracing instruction at 0x%"PRIx64 ", instruction size = 0x%x\n", address, size);
|
|
|
|
//uc_reg_read(uc, UC_X86_REG_EFLAGS, &eflags);
|
|
//printf(">>> --- EFLAGS is 0x%x\n", eflags);
|
|
|
|
// Uncomment below code to stop the emulation using uc_emu_stop()
|
|
// if (address == 0x1000009)
|
|
// uc_emu_stop(uc);
|
|
}
|
|
|
|
static void uc_assert_success(uc_err err)
|
|
{
|
|
assert_int_equal(err, 0);
|
|
// uc_strerror(err)
|
|
}
|
|
|
|
static void test_i386(void **state)
|
|
{
|
|
uc_engine *uc;
|
|
uc_err err;
|
|
uint32_t tmp;
|
|
uc_hook trace1, trace2;
|
|
|
|
const uint8_t code[] = "\x41\x4a"; // INC ecx; DEC edx
|
|
const uint64_t address = 0x1000000;
|
|
|
|
int r_ecx = 0x1234; // ECX register
|
|
int r_edx = 0x7890; // EDX register
|
|
|
|
// Initialize emulator in X86-32bit mode
|
|
err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
|
|
uc_assert_success(err);
|
|
|
|
// map 2MB memory for this emulation
|
|
err = uc_mem_map(uc, address, 2 * 1024 * 1024, UC_PROT_ALL);
|
|
uc_assert_success(err);
|
|
|
|
// write machine code to be emulated to memory
|
|
err = uc_mem_write(uc, address, code, sizeof(code)-1);
|
|
uc_assert_success(err);
|
|
|
|
// initialize machine registers
|
|
err = uc_reg_write(uc, UC_X86_REG_ECX, &r_ecx);
|
|
uc_assert_success(err);
|
|
err = uc_reg_write(uc, UC_X86_REG_EDX, &r_edx);
|
|
uc_assert_success(err);
|
|
|
|
// tracing all basic blocks with customized callback
|
|
err = uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, (uint64_t)1, (uint64_t)0);
|
|
uc_assert_success(err);
|
|
|
|
// tracing all instruction by having @begin > @end
|
|
err = uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, (uint64_t)1, (uint64_t)0);
|
|
uc_assert_success(err);
|
|
|
|
// emulate machine code in infinite time
|
|
err = uc_emu_start(uc, address, address+sizeof(code)-1, 0, 0);
|
|
uc_assert_success(err);
|
|
|
|
// now print out some registers
|
|
//printf(">>> Emulation done. Below is the CPU context\n");
|
|
|
|
uc_reg_read(uc, UC_X86_REG_ECX, &r_ecx);
|
|
uc_reg_read(uc, UC_X86_REG_EDX, &r_edx);
|
|
|
|
assert_int_equal(r_ecx, 0x1235);
|
|
assert_int_equal(r_edx, 0x788F);
|
|
|
|
// read from memory
|
|
err = uc_mem_read(uc, address, (uint8_t *)&tmp, 4);
|
|
uc_assert_success(err);
|
|
//printf(">>> Read 4 bytes from [0x%"PRIX64"] = 0x%x\n", address, tmp);
|
|
|
|
uc_close(uc);
|
|
}
|
|
|
|
int main(void) {
|
|
const struct CMUnitTest tests[] = {
|
|
cmocka_unit_test(test_i386),
|
|
};
|
|
return cmocka_run_group_tests(tests, NULL, NULL);
|
|
}
|