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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 "DFGAssemblyHelpers.h"
#if ENABLE(DFG_JIT)
namespace JSC { namespace DFG {
ExecutableBase* AssemblyHelpers::executableFor(const CodeOrigin& codeOrigin)
{
if (!codeOrigin.inlineCallFrame)
return m_codeBlock->ownerExecutable();
return codeOrigin.inlineCallFrame->executable.get();
}
Vector<BytecodeAndMachineOffset>& AssemblyHelpers::decodedCodeMapFor(CodeBlock* codeBlock)
{
ASSERT(codeBlock == codeBlock->baselineVersion());
ASSERT(codeBlock->getJITType() == JITCode::BaselineJIT);
ASSERT(codeBlock->jitCodeMap());
HashMap<CodeBlock*, Vector<BytecodeAndMachineOffset> >::AddResult result = m_decodedCodeMaps.add(codeBlock, Vector<BytecodeAndMachineOffset>());
if (result.isNewEntry)
codeBlock->jitCodeMap()->decode(result.iterator->value);
return result.iterator->value;
}
#if ENABLE(SAMPLING_FLAGS)
void AssemblyHelpers::setSamplingFlag(int32_t flag)
{
ASSERT(flag >= 1);
ASSERT(flag <= 32);
or32(TrustedImm32(1u << (flag - 1)), AbsoluteAddress(SamplingFlags::addressOfFlags()));
}
void AssemblyHelpers::clearSamplingFlag(int32_t flag)
{
ASSERT(flag >= 1);
ASSERT(flag <= 32);
and32(TrustedImm32(~(1u << (flag - 1))), AbsoluteAddress(SamplingFlags::addressOfFlags()));
}
#endif
#if DFG_ENABLE(JIT_ASSERT)
#if USE(JSVALUE64)
void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr)
{
#if CPU(X86_64)
Jump checkInt32 = branch64(BelowOrEqual, gpr, TrustedImm64(static_cast<uintptr_t>(0xFFFFFFFFu)));
breakpoint();
checkInt32.link(this);
#else
UNUSED_PARAM(gpr);
#endif
}
void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr)
{
Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister);
breakpoint();
checkJSInt32.link(this);
}
void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr)
{
Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister);
breakpoint();
checkJSNumber.link(this);
}
void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr)
{
Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister);
Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister);
checkJSInt32.link(this);
breakpoint();
checkJSNumber.link(this);
}
void AssemblyHelpers::jitAssertIsCell(GPRReg gpr)
{
Jump checkCell = branchTest64(MacroAssembler::Zero, gpr, GPRInfo::tagMaskRegister);
breakpoint();
checkCell.link(this);
}
#elif USE(JSVALUE32_64)
void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr)
{
UNUSED_PARAM(gpr);
}
void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr)
{
Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag));
breakpoint();
checkJSInt32.link(this);
}
void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr)
{
Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag));
Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag));
breakpoint();
checkJSInt32.link(this);
checkJSDouble.link(this);
}
void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr)
{
Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag));
breakpoint();
checkJSDouble.link(this);
}
void AssemblyHelpers::jitAssertIsCell(GPRReg gpr)
{
Jump checkCell = branch32(Equal, gpr, TrustedImm32(JSValue::CellTag));
breakpoint();
checkCell.link(this);
}
#endif // USE(JSVALUE32_64)
void AssemblyHelpers::jitAssertHasValidCallFrame()
{
Jump checkCFR = branchTestPtr(Zero, GPRInfo::callFrameRegister, TrustedImm32(7));
breakpoint();
checkCFR.link(this);
}
#endif // DFG_ENABLE(JIT_ASSERT)
} } // namespace JSC::DFG
#endif // ENABLE(DFG_JIT)
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