1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/v8.h" 6 7 #include "src/assembler.h" 8 #include "src/code-stubs.h" 9 #include "src/compiler/linkage.h" 10 #include "src/compiler/linkage-impl.h" 11 #include "src/zone.h" 12 13 namespace v8 { 14 namespace internal { 15 namespace compiler { 16 17 struct Arm64LinkageHelperTraits { 18 static Register ReturnValueReg() { return x0; } 19 static Register ReturnValue2Reg() { return x1; } 20 static Register JSCallFunctionReg() { return x1; } 21 static Register ContextReg() { return cp; } 22 static Register RuntimeCallFunctionReg() { return x1; } 23 static Register RuntimeCallArgCountReg() { return x0; } 24 static RegList CCalleeSaveRegisters() { 25 // TODO(dcarney): correct callee saved registers. 26 return 0; 27 } 28 static Register CRegisterParameter(int i) { 29 static Register register_parameters[] = {x0, x1, x2, x3, x4, x5, x6, x7}; 30 return register_parameters[i]; 31 } 32 static int CRegisterParametersLength() { return 8; } 33 }; 34 35 36 typedef LinkageHelper<Arm64LinkageHelperTraits> LH; 37 38 CallDescriptor* Linkage::GetJSCallDescriptor(int parameter_count, Zone* zone) { 39 return LH::GetJSCallDescriptor(zone, parameter_count); 40 } 41 42 43 CallDescriptor* Linkage::GetRuntimeCallDescriptor( 44 Runtime::FunctionId function, int parameter_count, 45 Operator::Properties properties, Zone* zone) { 46 return LH::GetRuntimeCallDescriptor(zone, function, parameter_count, 47 properties); 48 } 49 50 51 CallDescriptor* Linkage::GetStubCallDescriptor( 52 CallInterfaceDescriptor descriptor, int stack_parameter_count, 53 CallDescriptor::Flags flags, Zone* zone) { 54 return LH::GetStubCallDescriptor(zone, descriptor, stack_parameter_count, 55 flags); 56 } 57 58 59 CallDescriptor* Linkage::GetSimplifiedCDescriptor(Zone* zone, 60 MachineSignature* sig) { 61 return LH::GetSimplifiedCDescriptor(zone, sig); 62 } 63 64 } // namespace compiler 65 } // namespace internal 66 } // namespace v8 67