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Add Trap Flag test

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This commit is contained in:
Igor Pissolati
2025-04-28 18:25:28 -03:00
parent 285313cc68
commit 14c8532fa0
1 changed files with 32 additions and 0 deletions
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32
src/samples/test-sample/test.cpp
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@@ -11,6 +11,7 @@
#define NOMINMAX
#define WIN32_LEAN_AND_MEAN
#include <intrin.h>
#include <Windows.h>
#include <WinSock2.h>
#include <WS2tcpip.h>
@@ -641,6 +642,36 @@ namespace
return test_access_violation_exception() && test_illegal_instruction_exception();
}
bool trap_flag_cleared = false;
constexpr DWORD TRAP_FLAG_MASK = 0x100;
LONG NTAPI single_step_handler(PEXCEPTION_POINTERS exception_info)
{
if (exception_info->ExceptionRecord->ExceptionCode == EXCEPTION_SINGLE_STEP)
{
PCONTEXT context = exception_info->ContextRecord;
trap_flag_cleared = (context->EFlags & TRAP_FLAG_MASK) == 0;
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_CONTINUE_SEARCH;
}
bool test_interrupts()
{
PVOID veh_handle = AddVectoredExceptionHandler(1, single_step_handler);
if (!veh_handle)
return false;
__writeeflags(__readeflags() | TRAP_FLAG_MASK);
__nop();
RemoveVectoredExceptionHandler(veh_handle);
return trap_flag_cleared;
}
void print_time()
{
const auto epoch_time = std::chrono::system_clock::now().time_since_epoch();
@@ -698,6 +729,7 @@ int main(const int argc, const char* argv[])
RUN_TEST(test_env, "Environment")
RUN_TEST(test_exceptions, "Exceptions")
RUN_TEST(test_native_exceptions, "Native Exceptions")
RUN_TEST(test_interrupts, "Interrupts")
RUN_TEST(test_tls, "TLS")
RUN_TEST(test_socket, "Socket")
RUN_TEST(test_apc, "APC")