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/*
* Copyright (C) 2011 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"
#if ENABLE(LLINT)
#include "CallFrame.h"
#include "CodeBlock.h"
#include "Instruction.h"
#include "JITExceptions.h"
#include "LLIntCommon.h"
#include "LowLevelInterpreter.h"
#include "Operations.h"
namespace JSC { namespace LLInt {
static void fixupPCforExceptionIfNeeded(ExecState* exec)
{
CodeBlock* codeBlock = exec->codeBlock();
ASSERT(!!codeBlock);
Instruction* pc = exec->currentVPC();
exec->setCurrentVPC(codeBlock->adjustPCIfAtCallSite(pc));
}
void interpreterThrowInCaller(ExecState* exec, ReturnAddressPtr pc)
{
VM* vm = &exec->vm();
NativeCallFrameTracer tracer(vm, exec);
#if LLINT_SLOW_PATH_TRACING
dataLog("Throwing exception ", vm->exception, ".\n");
#endif
fixupPCforExceptionIfNeeded(exec);
genericThrow(
vm, exec, vm->exception,
exec->codeBlock()->bytecodeOffset(exec, pc));
}
Instruction* returnToThrowForThrownException(ExecState* exec)
{
UNUSED_PARAM(exec);
return LLInt::exceptionInstructions();
}
static void doThrow(ExecState* exec, Instruction* pc)
{
VM* vm = &exec->vm();
NativeCallFrameTracer tracer(vm, exec);
fixupPCforExceptionIfNeeded(exec);
genericThrow(vm, exec, vm->exception, pc - exec->codeBlock()->instructions().begin());
}
Instruction* returnToThrow(ExecState* exec, Instruction* pc)
{
#if LLINT_SLOW_PATH_TRACING
VM* vm = &exec->vm();
dataLog("Throwing exception ", vm->exception, " (returnToThrow).\n");
#endif
doThrow(exec, pc);
return LLInt::exceptionInstructions();
}
void* callToThrow(ExecState* exec, Instruction* pc)
{
#if LLINT_SLOW_PATH_TRACING
VM* vm = &exec->vm();
dataLog("Throwing exception ", vm->exception, " (callToThrow).\n");
#endif
doThrow(exec, pc);
return LLInt::getCodePtr(llint_throw_during_call_trampoline);
}
} } // namespace JSC::LLInt
#endif // ENABLE(LLINT)
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