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Added (failing?) test for reg save/restore

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This commit is contained in:
Andrew Dutcher 2016-08-31 20:25:28 -05:00
parent 0ef2b5fd71
commit f2af98942b
1 changed files with 63 additions and 0 deletions
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63
tests/unit/test_x86.c
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@ -729,6 +729,68 @@ static void test_x86_16(void **state)
/******************************************************************************/
static void test_i386_reg_save(void **state)
{
uc_engine *uc;
static const uint64_t address = 0;
static const uint8_t code[] = {
0x40 // inc eax
};
int32_t eax = 1;
// Initialize emulator
uc_assert_success(uc_open(UC_ARCH_X86, UC_MODE_16, &uc));
// map 8KB memory for this emulation
uc_assert_success(uc_mem_map(uc, address, 8 * 1024, UC_PROT_ALL));
// write machine code to be emulated to memory
uc_assert_success(uc_mem_write(uc, address, code, sizeof(code)));
// set eax to 1
uc_assert_success(uc_reg_write(uc, UC_X86_REG_EAX, &eax));
// step one instruction
uc_assert_success(uc_emu_start(uc, address, address+1, 0, 0));
// save the state
void *saved_regs = uc_save_regstate(uc, NULL);
// step one instruction
uc_assert_success(uc_emu_start(uc, address, address+1, 0, 0));
// check that eax == 3
uc_assert_success(uc_reg_read(uc, UC_X86_REG_EAX, &eax));
assert_int_equal(eax, 3);
// restore the state
uc_restore_regstate(uc, saved_regs);
// check that eax == 2
uc_assert_success(uc_reg_read(uc, UC_X86_REG_EAX, &eax));
assert_int_equal(eax, 2);
// step one instruction
uc_assert_success(uc_emu_start(uc, address, address+1, 0, 0));
// check that eax == 3
uc_assert_success(uc_reg_read(uc, UC_X86_REG_EAX, &eax));
assert_int_equal(eax, 3);
// restore the state
uc_restore_regstate(uc, saved_regs);
// check that eax == 2
uc_assert_success(uc_reg_read(uc, UC_X86_REG_EAX, &eax));
assert_int_equal(eax, 2);
// clean up;
free(saved_regs);
uc_assert_success(uc_close(uc));
}
/******************************************************************************/
int main(void) {
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_i386),
@ -738,6 +800,7 @@ int main(void) {
cmocka_unit_test(test_i386_invalid_mem_read),
cmocka_unit_test(test_i386_invalid_mem_write),
cmocka_unit_test(test_i386_jump_invalid),
cmocka_unit_test(test_i386_reg_save),
cmocka_unit_test(test_x86_64),
cmocka_unit_test(test_x86_64_syscall),