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difference between stop_request and quit_request

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quit_request is for internal use. This means the IP register was updated and
qemu needs to rebuild the translation blocks.

stop_request is set by the user (uc_emu_stop) to indecate that unicorn sould
stop emulating.
This commit is contained in:
Takacs, Philipp
2023-03-06 15:35:01 +01:00
parent ca7e0e7f42
commit b7b1a4d6b4
13 changed files with 70 additions and 23 deletions
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36
tests/unit/test_ctl.c
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@@ -304,6 +304,41 @@ static void test_uc_hook_cached_uaf(void)
#endif
}
static void test_uc_emu_stop_set_ip_callback(uc_engine *uc, uint64_t address, uint32_t size, void *userdata)
{
uint64_t rip = code_start + 0xb;
if (address == code_start + 0x7) {
printf("stoping\n");
uc_emu_stop(uc);
uc_reg_write(uc, UC_X86_REG_RIP, &rip);
}
}
static void test_uc_emu_stop_set_ip(void)
{
uc_engine *uc;
uc_hook h;
uint64_t rip;
char code[] = "\x48\x31\xc0" // 0x0 xor rax, rax : rax = 0
"\x90" // 0x3 nop :
"\x48\xff\xc0" // 0x4 inc rax : rax++
"\x90" // 0x7 nop : <-- going to stop here
"\x48\xff\xc0" // 0x8 inc rax : rax++
"\x90" // 0xb nop :
"\x0f\x0b" // 0xc ud2 : <-- will raise UC_ERR_INSN_INVALID, but should not never be reached
"\x90" // 0xe nop :
"\x90"; // 0xf nop :
uc_common_setup(&uc, UC_ARCH_X86, UC_MODE_64, code, sizeof(code) - 1);
OK(uc_hook_add(uc, &h, UC_HOOK_CODE, test_uc_emu_stop_set_ip_callback, NULL, 1, 0));
OK(uc_emu_start(uc, code_start, code_start + sizeof(code) - 1, 0, 0));
OK(uc_reg_read(uc, UC_X86_REG_RIP, &rip));
TEST_CHECK(rip == code_start + 0xb);
OK(uc_close(uc));
}
TEST_LIST = {{"test_uc_ctl_mode", test_uc_ctl_mode},
{"test_uc_ctl_page_size", test_uc_ctl_page_size},
{"test_uc_ctl_arch", test_uc_ctl_arch},
@@ -315,4 +350,5 @@ TEST_LIST = {{"test_uc_ctl_mode", test_uc_ctl_mode},
{"test_uc_ctl_arm_cpu", test_uc_ctl_arm_cpu},
#endif
{"test_uc_hook_cached_uaf", test_uc_hook_cached_uaf},
{"test_uc_emu_stop_set_ip", test_uc_emu_stop_set_ip},
{NULL, NULL}};