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LLIntExceptions.cpp
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96 lines (87 loc) · 3.2 KB
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/*
* Copyright (C) 2011-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "LLIntExceptions.h"
#include "LLIntCommon.h"
#include "LLIntData.h"
#include "LLIntThunks.h"
#include "WasmContext.h"
#if LLINT_TRACING
#include "Exception.h"
#include "TopExceptionScope.h"
#endif
namespace JSC { namespace LLInt {
JSInstruction* returnToThrow(VM& vm)
{
UNUSED_PARAM(vm);
#if LLINT_TRACING
if (Options::traceLLIntSlowPath()) [[unlikely]] {
auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);
dataLog("Throwing exception ", JSValue(scope.exception()), " (returnToThrow).\n");
}
#endif
return LLInt::exceptionInstructions();
}
MacroAssemblerCodeRef<ExceptionHandlerPtrTag> callToThrow(VM& vm)
{
UNUSED_PARAM(vm);
#if LLINT_TRACING
if (Options::traceLLIntSlowPath()) [[unlikely]] {
auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);
dataLog("Throwing exception ", JSValue(scope.exception()), " (callToThrow).\n");
}
#endif
#if ENABLE(JIT)
if (Options::useJIT())
return LLInt::callToThrowThunk();
#endif
return LLInt::getCodeRef<ExceptionHandlerPtrTag>(llint_throw_during_call_trampoline);
}
MacroAssemblerCodeRef<ExceptionHandlerPtrTag> handleUncaughtException(VM&)
{
#if ENABLE(JIT)
if (Options::useJIT())
return handleUncaughtExceptionThunk();
#endif
return LLInt::getCodeRef<ExceptionHandlerPtrTag>(llint_handle_uncaught_exception);
}
MacroAssemblerCodeRef<ExceptionHandlerPtrTag> handleCatch(OpcodeSize size)
{
#if ENABLE(JIT)
if (Options::useJIT())
return handleCatchThunk(size);
#endif
switch (size) {
case OpcodeSize::Narrow:
return LLInt::getCodeRef<ExceptionHandlerPtrTag>(op_catch);
case OpcodeSize::Wide16:
return LLInt::getWide16CodeRef<ExceptionHandlerPtrTag>(op_catch);
case OpcodeSize::Wide32:
return LLInt::getWide32CodeRef<ExceptionHandlerPtrTag>(op_catch);
}
RELEASE_ASSERT_NOT_REACHED();
return {};
}
} } // namespace JSC::LLInt