Contribution of PowerPC port (continuation of 422063005) - PPC dir update

src/compiler/ppc/linkage-ppc.cc

 // 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 {
 
-struct Arm64LinkageHelperTraits {
-  static Register ReturnValueReg() { return x0; }
-  static Register ReturnValue2Reg() { return x1; }
-  static Register JSCallFunctionReg() { return x1; }
+struct PPCLinkageHelperTraits {
+  static Register ReturnValueReg() { return r3; }
+  static Register ReturnValue2Reg() { return r4; }
+  static Register JSCallFunctionReg() { return r4; }
   static Register ContextReg() { return cp; }
-  static Register RuntimeCallFunctionReg() { return x1; }
-  static Register RuntimeCallArgCountReg() { return x0; }
+  static Register RuntimeCallFunctionReg() { return r4; }
+  static Register RuntimeCallArgCountReg() { return r3; }
   static RegList CCalleeSaveRegisters() {
-    // TODO(dcarney): correct callee saved registers.
-    return 0;
+    return r14.bit() | r15.bit() | r16.bit() | r17.bit() | r18.bit() |
+           r19.bit() | r20.bit() | r21.bit() | r22.bit() | r23.bit() |
+           r24.bit() | r25.bit() | r26.bit() | r27.bit() | r28.bit() |
+           r29.bit() | r30.bit() | fp.bit();
   }
   static Register CRegisterParameter(int i) {
-    static Register register_parameters[] = {x0, x1, x2, x3, x4, x5, x6, x7};
+    static Register register_parameters[] = {r3, r4, r5, r6, r7, r8, r9, r10};
     return register_parameters[i];
   }
   static int CRegisterParametersLength() { return 8; }
 };
 
 
-typedef LinkageHelper<Arm64LinkageHelperTraits> LH;
+typedef LinkageHelper<PPCLinkageHelperTraits> LH;
 
 CallDescriptor* Linkage::GetJSCallDescriptor(Zone* zone, bool is_osr,
                                              int parameter_count,
                                              CallDescriptor::Flags flags) {
   return LH::GetJSCallDescriptor(zone, is_osr, parameter_count, flags);
 }
 
 
 CallDescriptor* Linkage::GetRuntimeCallDescriptor(
     Zone* zone, Runtime::FunctionId function, int parameter_count,
@@ skipping 13 matching lines @@
 
 
 CallDescriptor* Linkage::GetSimplifiedCDescriptor(Zone* zone,
                                                   MachineSignature* sig) {
   return LH::GetSimplifiedCDescriptor(zone, sig);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8