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94 lines (81 loc) · 3.42 KB
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/*
* Copyright (C) 2013 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.
*/
#ifndef SlowPathCall_h
#define SlowPathCall_h
#include "CommonSlowPaths.h"
#include "MacroAssemblerCodeRef.h"
#if ENABLE(JIT)
namespace JSC {
class JITSlowPathCall {
public:
JITSlowPathCall(JIT* jit, Instruction* pc, SlowPathReturnType (SLOW_PATH *stub)(ExecState* exec, Instruction* pc))
: m_jit(jit)
, m_stub(stub)
, m_pc(pc)
{
}
JIT::Call call()
{
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeOffset != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeOffset, true);
#endif
m_jit->updateTopCallFrame();
#if CPU(X86) && USE(JSVALUE32_64)
m_jit->addPtr(MacroAssembler::TrustedImm32(-8), MacroAssembler::stackPointerRegister);
m_jit->push(JIT::TrustedImm32(JIT::TrustedImmPtr(m_pc)));
m_jit->push(JIT::callFrameRegister);
#elif CPU(X86_64) && OS(WINDOWS)
m_jit->addPtr(MacroAssembler::TrustedImm32(-16), MacroAssembler::stackPointerRegister);
m_jit->move(MacroAssembler::stackPointerRegister, JIT::argumentGPR0);
m_jit->move(JIT::callFrameRegister, JIT::argumentGPR1);
m_jit->move(JIT::TrustedImmPtr(m_pc), JIT::argumentGPR2);
#else
m_jit->move(JIT::callFrameRegister, JIT::argumentGPR0);
m_jit->move(JIT::TrustedImmPtr(m_pc), JIT::argumentGPR1);
#endif
JIT::Call call = m_jit->call();
m_jit->m_calls.append(CallRecord(call, m_jit->m_bytecodeOffset, m_stub.value()));
#if CPU(X86) && USE(JSVALUE32_64)
m_jit->addPtr(MacroAssembler::TrustedImm32(16), MacroAssembler::stackPointerRegister);
#elif CPU(X86_64) && OS(WINDOWS)
m_jit->pop(JIT::regT0); // vPC
m_jit->pop(JIT::regT1); // callFrame register
#endif
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeOffset != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeOffset, false);
#endif
m_jit->exceptionCheck();
return call;
}
private:
JIT* m_jit;
FunctionPtr m_stub;
Instruction* m_pc;
};
} // namespace JS
#endif // ENABLE(JIT)
#endif // SlowPathCall_h