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/*
* Copyright (C) 2016-2018 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 "FTLExceptionTarget.h"
#if ENABLE(FTL_JIT)
#include "LinkBuffer.h"
namespace JSC { namespace FTL {
ExceptionTarget::~ExceptionTarget()
{
}
CodeLocationLabel<ExceptionHandlerPtrTag> ExceptionTarget::label(LinkBuffer& linkBuffer)
{
if (m_isDefaultHandler)
return linkBuffer.locationOf<ExceptionHandlerPtrTag>(*m_defaultHandler);
return linkBuffer.locationOf<ExceptionHandlerPtrTag>(m_handle->label);
}
Box<CCallHelpers::JumpList> ExceptionTarget::jumps(CCallHelpers& jit)
{
Box<CCallHelpers::JumpList> result = Box<CCallHelpers::JumpList>::create();
if (m_isDefaultHandler) {
Box<CCallHelpers::Label> defaultHandler = m_defaultHandler;
jit.addLinkTask(
[=] (LinkBuffer& linkBuffer) {
linkBuffer.link(*result, linkBuffer.locationOf<ExceptionHandlerPtrTag>(*defaultHandler));
});
} else {
RefPtr<OSRExitHandle> handle = m_handle;
jit.addLinkTask(
[=] (LinkBuffer& linkBuffer) {
linkBuffer.link(*result, linkBuffer.locationOf<OSRExitPtrTag>(handle->label));
});
}
return result;
}
ExceptionTarget::ExceptionTarget(
bool isDefaultHandler, Box<CCallHelpers::Label> defaultHandler, RefPtr<OSRExitHandle> handle)
: m_isDefaultHandler(isDefaultHandler)
, m_defaultHandler(defaultHandler)
, m_handle(handle)
{
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)