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/*
* Copyright (C) 2015-2018 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 "FTLOSRExitHandle.h"
#if ENABLE(FTL_JIT)
#include "FTLOSRExit.h"
#include "FTLState.h"
#include "FTLThunks.h"
#include "LinkBuffer.h"
#include "ProfilerCompilation.h"
namespace JSC { namespace FTL {
void OSRExitHandle::emitExitThunk(State& state, CCallHelpers& jit)
{
Profiler::Compilation* compilation = state.graph.compilation();
CCallHelpers::Label myLabel = jit.label();
label = myLabel;
jit.pushToSaveImmediateWithoutTouchingRegisters(CCallHelpers::TrustedImm32(m_index));
CCallHelpers::PatchableJump jump = jit.patchableJump();
RefPtr<OSRExitHandle> self = this;
VM& vm = state.vm();
jit.addLinkTask(
[self, jump, myLabel, compilation, &vm] (LinkBuffer& linkBuffer) {
self->m_jitCode->m_osrExit[self->m_index].m_patchableJump = CodeLocationJump<JSInternalPtrTag>(linkBuffer.locationOf<JSInternalPtrTag>(jump));
linkBuffer.link(
jump.m_jump,
CodeLocationLabel<JITThunkPtrTag>(vm.getCTIStub(osrExitGenerationThunkGenerator).code()));
if (compilation)
compilation->addOSRExitSite({ linkBuffer.locationOf<JSInternalPtrTag>(myLabel) });
});
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)
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