#include "config.h"
#include "DFGThunks.h"
#if ENABLE(DFG_JIT)
#include "DFGFPRInfo.h"
#include "DFGGPRInfo.h"
#include "DFGOSRExitCompiler.h"
#include "MacroAssembler.h"
namespace JSC { namespace DFG {
MacroAssemblerCodeRef osrExitGenerationThunkGenerator(JSGlobalData* globalData)
{
MacroAssembler jit;
EncodedJSValue* buffer = static_cast<EncodedJSValue*>(globalData->scratchBufferForSize(sizeof(EncodedJSValue) * (GPRInfo::numberOfRegisters + FPRInfo::numberOfRegisters)));
for (unsigned i = 0; i < GPRInfo::numberOfRegisters; ++i)
jit.storePtr(GPRInfo::toRegister(i), buffer + i);
for (unsigned i = 0; i < FPRInfo::numberOfRegisters; ++i) {
jit.move(MacroAssembler::TrustedImmPtr(buffer + GPRInfo::numberOfRegisters + i), GPRInfo::regT0);
jit.storeDouble(FPRInfo::toRegister(i), GPRInfo::regT0);
}
#if CPU(X86)
jit.poke(GPRInfo::callFrameRegister, 0);
#else
jit.move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
#endif
MacroAssembler::Call functionCall = jit.call();
for (unsigned i = 0; i < FPRInfo::numberOfRegisters; ++i) {
jit.move(MacroAssembler::TrustedImmPtr(buffer + GPRInfo::numberOfRegisters + i), GPRInfo::regT0);
jit.loadDouble(GPRInfo::regT0, FPRInfo::toRegister(i));
}
for (unsigned i = 0; i < GPRInfo::numberOfRegisters; ++i)
jit.loadPtr(buffer + i, GPRInfo::toRegister(i));
jit.jump(MacroAssembler::AbsoluteAddress(&globalData->osrExitJumpDestination));
LinkBuffer patchBuffer(*globalData, &jit);
patchBuffer.link(functionCall, compileOSRExit);
return patchBuffer.finalizeCode();
}
} }
#endif // ENABLE(DFG_JIT)