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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
#include "standardpch.h"
#include "errorhandling.h"
#include "logging.h"
#include "runtimedetails.h"
void MSC_ONLY(__declspec(noreturn)) ThrowException(DWORD exceptionCode)
{
RaiseException(exceptionCode, 0, 0, nullptr);
}
// Allocating memory here seems moderately dangerous: we'll probably leak like a sieve...
void MSC_ONLY(__declspec(noreturn)) ThrowException(DWORD exceptionCode, va_list args, const char *message)
{
char *buffer = new char[8192];
ULONG_PTR *ptr = new ULONG_PTR();
*ptr = (ULONG_PTR)buffer;
_vsnprintf_s(buffer, 8192, 8191, message, args);
RaiseException(exceptionCode, 0, 1, ptr);
}
void MSC_ONLY(__declspec(noreturn)) ThrowException(DWORD exceptionCode, const char *msg, ...)
{
va_list ap;
va_start(ap, msg);
ThrowException(exceptionCode, ap, msg);
}
SpmiException::SpmiException(PEXCEPTION_POINTERS exp)
: exCode(exp->ExceptionRecord->ExceptionCode)
{
exMessage = (exp->ExceptionRecord->NumberParameters != 1) ? nullptr : (char *) exp->ExceptionRecord->ExceptionInformation[0];
}
SpmiException::SpmiException(DWORD exceptionCode, char* exceptionMessage)
: exCode(exceptionCode)
, exMessage(exceptionMessage)
{
}
#if 0
SpmiException::~SpmiException()
{
delete[] exMessage;
exMessage = nullptr;
}
#endif
char *SpmiException::GetExceptionMessage()
{
return exMessage;
}
void SpmiException::ShowAndDeleteMessage()
{
if (exMessage != nullptr)
{
LogError("Exception thrown: %s", exMessage);
delete[] exMessage;
exMessage = nullptr;
}
}
void SpmiException::DeleteMessage()
{
delete[] exMessage;
exMessage = nullptr;
}
DWORD SpmiException::GetCode()
{
return exCode;
}
// This filter function executes the handler only for EXCEPTIONCODE_MC, otherwise it continues the handler search.
LONG FilterSuperPMIExceptions_CatchMC(PEXCEPTION_POINTERS pExceptionPointers, LPVOID lpvParam)
{
return (pExceptionPointers->ExceptionRecord->ExceptionCode == EXCEPTIONCODE_MC) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
}
// This filter function captures the exception pointers and continues searching.
LONG FilterSuperPMIExceptions_CaptureExceptionAndContinue(PEXCEPTION_POINTERS pExceptionPointers, LPVOID lpvParam)
{
FilterSuperPMIExceptionsParam_CaptureException* pSPMIEParam = (FilterSuperPMIExceptionsParam_CaptureException *)lpvParam;
pSPMIEParam->exceptionPointers = *pExceptionPointers; // Capture the exception pointers for use later
pSPMIEParam->exceptionCode = pSPMIEParam->exceptionPointers.ExceptionRecord->ExceptionCode;
return EXCEPTION_CONTINUE_SEARCH;
}
LONG FilterSuperPMIExceptions_CaptureExceptionAndStop(PEXCEPTION_POINTERS pExceptionPointers, LPVOID lpvParam)
{
FilterSuperPMIExceptionsParam_CaptureException* pSPMIEParam = (FilterSuperPMIExceptionsParam_CaptureException *)lpvParam;
pSPMIEParam->exceptionPointers = *pExceptionPointers; // Capture the exception pointers for use later
pSPMIEParam->exceptionCode = pSPMIEParam->exceptionPointers.ExceptionRecord->ExceptionCode;
return EXCEPTION_EXECUTE_HANDLER;
}
bool IsSuperPMIException(unsigned code)
{
switch (code)
{
case EXCEPTIONCODE_MC:
case EXCEPTIONCODE_LWM:
case EXCEPTIONCODE_CALLUTILS:
case EXCEPTIONCODE_TYPEUTILS:
case EXCEPTIONCODE_ASSERT:
return true;
default:
if ((EXCEPTIONCODE_DebugBreakorAV <= code) && (code < EXCEPTIONCODE_DebugBreakorAV_MAX))
{
return true;
}
return false;
}
}
// This filter function executes the handler only for non-SuperPMI generated exceptions, otherwise it continues the handler search.
// This allows for SuperPMI-thrown exceptions to pass through the JIT and be caught by the outer SuperPMI handler.
LONG FilterSuperPMIExceptions_CatchNonSuperPMIException(PEXCEPTION_POINTERS pExceptionPointers, LPVOID lpvParam)
{
return !IsSuperPMIException(pExceptionPointers->ExceptionRecord->ExceptionCode);
}
bool RunWithErrorTrap(void (*function)(void*), void* param)
{
bool success = true;
struct TrapParam {
void (*function)(void*);
void *param;
} trapParam;
trapParam.function = function;
trapParam.param = param;
PAL_TRY(TrapParam*, pTrapParam, &trapParam)
{
pTrapParam->function(pTrapParam->param);
}
PAL_EXCEPT_FILTER(FilterSuperPMIExceptions_CatchNonSuperPMIException)
{
success = false;
}
PAL_ENDTRY
return success;
}
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