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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/v8.h"
#include "src/assembler.h"
#include "src/code-stubs.h"
#include "src/compiler/linkage.h"
#include "src/compiler/linkage-impl.h"
#include "src/zone.h"
namespace v8 {
namespace internal {
namespace compiler {
#ifdef _WIN64
const bool kWin64 = true;
#else
const bool kWin64 = false;
#endif
struct X64LinkageHelperTraits {
static Register ReturnValueReg() { return rax; }
static Register ReturnValue2Reg() { return rdx; }
static Register JSCallFunctionReg() { return rdi; }
static Register ContextReg() { return rsi; }
static Register RuntimeCallFunctionReg() { return rbx; }
static Register RuntimeCallArgCountReg() { return rax; }
static RegList CCalleeSaveRegisters() {
if (kWin64) {
return rbx.bit() | rdi.bit() | rsi.bit() | r12.bit() | r13.bit() |
r14.bit() | r15.bit();
} else {
return rbx.bit() | r12.bit() | r13.bit() | r14.bit() | r15.bit();
}
}
static Register CRegisterParameter(int i) {
if (kWin64) {
static Register register_parameters[] = {rcx, rdx, r8, r9};
return register_parameters[i];
} else {
static Register register_parameters[] = {rdi, rsi, rdx, rcx, r8, r9};
return register_parameters[i];
}
}
static int CRegisterParametersLength() { return kWin64 ? 4 : 6; }
};
typedef LinkageHelper<X64LinkageHelperTraits> LH;
CallDescriptor* Linkage::GetJSCallDescriptor(int parameter_count, Zone* zone) {
return LH::GetJSCallDescriptor(zone, parameter_count);
}
CallDescriptor* Linkage::GetRuntimeCallDescriptor(
Runtime::FunctionId function, int parameter_count,
Operator::Properties properties, Zone* zone) {
return LH::GetRuntimeCallDescriptor(zone, function, parameter_count,
properties);
}
CallDescriptor* Linkage::GetStubCallDescriptor(
CallInterfaceDescriptor descriptor, int stack_parameter_count,
CallDescriptor::Flags flags, Zone* zone) {
return LH::GetStubCallDescriptor(zone, descriptor, stack_parameter_count,
flags);
}
CallDescriptor* Linkage::GetSimplifiedCDescriptor(Zone* zone,
MachineSignature* sig) {
return LH::GetSimplifiedCDescriptor(zone, sig);
}
} // namespace compiler
} // namespace internal
} // namespace v8
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