#include "config.h"
#include "FTLJSCallBase.h"
#if ENABLE(FTL_JIT)
#include "DFGNode.h"
#include "LinkBuffer.h"
namespace JSC { namespace FTL {
using namespace DFG;
JSCallBase::JSCallBase()
: m_type(CallLinkInfo::None)
, m_callLinkInfo(nullptr)
{
}
JSCallBase::JSCallBase(CallLinkInfo::CallType type, CodeOrigin origin)
: m_type(type)
, m_origin(origin)
, m_callLinkInfo(nullptr)
{
}
void JSCallBase::emit(CCallHelpers& jit)
{
m_callLinkInfo = jit.codeBlock()->addCallLinkInfo();
CCallHelpers::Jump slowPath = jit.branchPtrWithPatch(
CCallHelpers::NotEqual, GPRInfo::regT0, m_targetToCheck,
CCallHelpers::TrustedImmPtr(0));
m_fastCall = jit.nearCall();
CCallHelpers::Jump done = jit.jump();
slowPath.link(&jit);
jit.move(CCallHelpers::TrustedImmPtr(m_callLinkInfo), GPRInfo::regT2);
m_slowCall = jit.nearCall();
done.link(&jit);
}
void JSCallBase::link(VM& vm, LinkBuffer& linkBuffer)
{
ThunkGenerator generator = linkThunkGeneratorFor(
CallLinkInfo::specializationKindFor(m_type), MustPreserveRegisters);
linkBuffer.link(
m_slowCall, FunctionPtr(vm.getCTIStub(generator).code().executableAddress()));
m_callLinkInfo->setUpCallFromFTL(m_type, m_origin, linkBuffer.locationOfNearCall(m_slowCall),
linkBuffer.locationOf(m_targetToCheck), linkBuffer.locationOfNearCall(m_fastCall),
GPRInfo::regT0);
}
} }
#endif // ENABLE(FTL_JIT)