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lazymio
2023-08-06 21:53:42 +08:00
parent 30bc08611b
commit 6801e156aa
6 changed files with 52 additions and 36 deletions
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43
tests/unit/test_x86.c
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@@ -1438,7 +1438,8 @@ static void test_x86_segmentation()
uc_assert_err(UC_ERR_EXCEPTION, uc_reg_write(uc, UC_X86_REG_FS, &fs));
}
static void test_x86_0xff_lcall_callback(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
static void test_x86_0xff_lcall_callback(uc_engine *uc, uint64_t address,
uint32_t size, void *user_data)
{
// do nothing
return;
@@ -1447,9 +1448,11 @@ static void test_x86_0xff_lcall_callback(uc_engine *uc, uint64_t address, uint32
// This aborts prior to a7a5d187e77f7853755eff4768658daf8095c3b7
static void test_x86_0xff_lcall()
{
uc_engine* uc;
uc_engine *uc;
uc_hook hk;
const char code[] = "\xB8\x01\x00\x00\x00\xBB\x01\x00\x00\x00\xB9\x01\x00\x00\x00\xFF\xDD\xBA\x01\x00\x00\x00\xB8\x02\x00\x00\x00\xBB\x02\x00\x00\x00";
const char code[] =
"\xB8\x01\x00\x00\x00\xBB\x01\x00\x00\x00\xB9\x01\x00\x00\x00\xFF\xDD"
"\xBA\x01\x00\x00\x00\xB8\x02\x00\x00\x00\xBB\x02\x00\x00\x00";
// Taken from #1842
// 0: b8 01 00 00 00 mov eax,0x1
// 5: bb 01 00 00 00 mov ebx,0x1
@@ -1458,21 +1461,22 @@ static void test_x86_0xff_lcall()
// 10: dd ba 01 00 00 00 fnstsw WORD PTR [edx+0x1]
// 16: b8 02 00 00 00 mov eax,0x2
// 1b: bb 02 00 00 00 mov ebx,0x2
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_32, code, sizeof(code) - 1);
OK(uc_hook_add(uc, &hk, UC_HOOK_CODE, test_x86_0xff_lcall_callback, NULL, 1, 0));
OK(uc_hook_add(uc, &hk, UC_HOOK_CODE, test_x86_0xff_lcall_callback, NULL, 1,
0));
uc_assert_err(UC_ERR_INSN_INVALID, uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
uc_assert_err(
UC_ERR_INSN_INVALID,
uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
OK(uc_close(uc));
}
static bool
test_x86_64_not_overwriting_tmp0_for_pc_update_cb(uc_engine *uc, uc_mem_type type,
uint64_t address, int size,
uint64_t value, void *user_data)
static bool test_x86_64_not_overwriting_tmp0_for_pc_update_cb(
uc_engine *uc, uc_mem_type type, uint64_t address, int size, uint64_t value,
void *user_data)
{
return true;
}
@@ -1481,20 +1485,24 @@ test_x86_64_not_overwriting_tmp0_for_pc_update_cb(uc_engine *uc, uc_mem_type typ
// https://github.com/unicorn-engine/unicorn/issues/1862
static void test_x86_64_not_overwriting_tmp0_for_pc_update()
{
uc_engine* uc;
uc_engine *uc;
uc_hook hk;
const char code[] = "\x48\xb9\xff\xff\xff\xff\xff\xff\xff\xff\x48\x89\x0c\x24\x48\xd3\x24\x24\x73\x0a";
const char code[] = "\x48\xb9\xff\xff\xff\xff\xff\xff\xff\xff\x48\x89\x0c"
"\x24\x48\xd3\x24\x24\x73\x0a";
uint64_t rsp, pc, eflags;
// 0x1000: movabs rcx, 0xffffffffffffffff
// 0x100a: mov qword ptr [rsp], rcx
// 0x100e: shl qword ptr [rsp], cl ; (Shift to CF=1)
// 0x1012: jae 0xd ; this jump should not be taken! (CF=1 but jae expects CF=0)
// 0x1012: jae 0xd ; this jump should not be taken! (CF=1 but jae
// expects CF=0)
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_64, code, sizeof(code) - 1);
OK(uc_hook_add(uc, &hk, UC_HOOK_MEM_READ | UC_HOOK_MEM_WRITE, test_x86_64_not_overwriting_tmp0_for_pc_update_cb, NULL, 1, 0));
OK(uc_hook_add(uc, &hk, UC_HOOK_MEM_READ | UC_HOOK_MEM_WRITE,
test_x86_64_not_overwriting_tmp0_for_pc_update_cb, NULL, 1,
0));
rsp = 0x2000;
OK(uc_reg_write(uc, UC_X86_REG_RSP, (void*)&rsp));
OK(uc_reg_write(uc, UC_X86_REG_RSP, (void *)&rsp));
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 4));
OK(uc_reg_read(uc, UC_X86_REG_RIP, &pc));
OK(uc_reg_read(uc, UC_X86_REG_EFLAGS, &eflags));
@@ -1552,5 +1560,6 @@ TEST_LIST = {
{"test_x86_vtlb", test_x86_vtlb},
{"test_x86_segmentation", test_x86_segmentation},
{"test_x86_0xff_lcall", test_x86_0xff_lcall},
{"test_x86_64_not_overwriting_tmp0_for_pc_update", test_x86_64_not_overwriting_tmp0_for_pc_update},
{"test_x86_64_not_overwriting_tmp0_for_pc_update",
test_x86_64_not_overwriting_tmp0_for_pc_update},
{NULL, NULL}};