DFGAssemblyHelpers.cpp [plain text]
#include "config.h"
#include "DFGAssemblyHelpers.h"
#if ENABLE(DFG_JIT)
namespace JSC { namespace DFG {
const double AssemblyHelpers::twoToThe32 = (double)0x100000000ull;
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->second);
return result.iterator->second;
}
#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 = branchPtr(BelowOrEqual, gpr, TrustedImmPtr(reinterpret_cast<void*>(static_cast<uintptr_t>(0xFFFFFFFFu))));
breakpoint();
checkInt32.link(this);
#else
UNUSED_PARAM(gpr);
#endif
}
void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr)
{
Jump checkJSInt32 = branchPtr(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister);
breakpoint();
checkJSInt32.link(this);
}
void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr)
{
Jump checkJSNumber = branchTestPtr(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister);
breakpoint();
checkJSNumber.link(this);
}
void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr)
{
Jump checkJSInt32 = branchPtr(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister);
Jump checkJSNumber = branchTestPtr(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister);
checkJSInt32.link(this);
breakpoint();
checkJSNumber.link(this);
}
void AssemblyHelpers::jitAssertIsCell(GPRReg gpr)
{
Jump checkCell = branchTestPtr(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)
} }
#endif // ENABLE(DFG_JIT)