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Code patching tests for riscv and arm64

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This commit is contained in:
Quentin DUCASSE
2021-12-10 15:27:54 +01:00
parent 1923c12315
commit 549274f44c
2 changed files with 117 additions and 1 deletions
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62
tests/unit/test_arm64.c
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@@ -50,4 +50,64 @@ static void test_arm64_until()
OK(uc_close(uc));
}
TEST_LIST = {{"test_arm64_until", test_arm64_until}, {NULL, NULL}};
static void test_arm64_code_patching() {
uc_engine *uc;
char code[] = "\x00\x04\x00\x11"; // add w0, w0, 0x1
uc_common_setup(&uc, UC_ARCH_ARM64, UC_MODE_ARM, code, sizeof(code) - 1);
// zero out x0
uint64_t r_x0 = 0x0;
OK(uc_reg_write(uc, UC_ARM64_REG_X0, &r_x0));
// emulate the instruction
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) -1, 0, 0));
// check value
OK(uc_reg_read(uc, UC_ARM64_REG_X0, &r_x0));
TEST_CHECK(r_x0 == 0x1);
// patch instruction
char patch_code[] = "\x00\xfc\x1f\x11"; // add w0, w0, 0x7FF
OK(uc_mem_write(uc, code_start, patch_code, sizeof(patch_code) - 1));
// zero out x0
r_x0 = 0x0;
OK(uc_reg_write(uc, UC_ARM64_REG_X0, &r_x0));
OK(uc_emu_start(uc, code_start, code_start + sizeof(patch_code) -1, 0, 0));
// check value
OK(uc_reg_read(uc, UC_ARM64_REG_X0, &r_x0));
TEST_CHECK(r_x0 != 0x1);
TEST_CHECK(r_x0 == 0x7ff);
OK(uc_close(uc));
}
static void test_arm64_code_patching_count() {
uc_engine *uc;
char code[] = "\x00\x04\x00\x11"; // add w0, w0, 0x1
uc_common_setup(&uc, UC_ARCH_ARM64, UC_MODE_ARM, code, sizeof(code) - 1);
// zero out x0
uint64_t r_x0 = 0x0;
OK(uc_reg_write(uc, UC_ARM64_REG_X0, &r_x0));
// emulate the instruction
OK(uc_emu_start(uc, code_start, -1, 0, 1));
// check value
OK(uc_reg_read(uc, UC_ARM64_REG_X0, &r_x0));
TEST_CHECK(r_x0 == 0x1);
// patch instruction
char patch_code[] = "\x00\xfc\x1f\x11"; // add w0, w0, 0x7FF
OK(uc_mem_write(uc, code_start, patch_code, sizeof(patch_code) - 1));
// zero out x0
r_x0 = 0x0;
OK(uc_reg_write(uc, UC_ARM64_REG_X0, &r_x0));
OK(uc_emu_start(uc, code_start, -1, 0, 1));
// check value
OK(uc_reg_read(uc, UC_ARM64_REG_X0, &r_x0));
TEST_CHECK(r_x0 != 0x1);
TEST_CHECK(r_x0 == 0x7ff);
OK(uc_close(uc));
}
TEST_LIST = {
{"test_arm64_until", test_arm64_until},
{"test_arm64_code_patching", test_arm64_code_patching},
{"test_arm64_code_patching_count", test_arm64_code_patching_count},
{NULL, NULL}
};