[turbofan] Remove architecture-specific linkage files and LinkageTraits. Use macro-assembler-define…

src/ppc/macro-assembler-ppc.h

 // 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.
 
 #ifndef V8_PPC_MACRO_ASSEMBLER_PPC_H_
 #define V8_PPC_MACRO_ASSEMBLER_PPC_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
 #include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 
+// Give alias names to registers for calling conventions.
+const Register kReturnRegister0 = {kRegister_r3_Code};
+const Register kReturnRegister1 = {kRegister_r4_Code};
+const Register kJSFunctionRegister = {kRegister_r4_Code};
+const Register kContextRegister = {kRegister_r30_Code};
+const Register kInterpreterBytecodeOffsetRegister = {kRegister_r14_Code};
+const Register kInterpreterBytecodeArrayRegister = {kRegister_r15_Code};
+const Register kInterpreterDispatchTableRegister = {kRegister_r16_Code};
+const Register kRuntimeCallFunctionRegister = {kRegister_r4_Code};
+const Register kRuntimeCallArgCountRegister = {kRegister_r3_Code};
+
 // ----------------------------------------------------------------------------
 // Static helper functions
 
 // Generate a MemOperand for loading a field from an object.
 inline MemOperand FieldMemOperand(Register object, int offset) {
   return MemOperand(object, offset - kHeapObjectTag);
 }
 
 
 // Flags used for AllocateHeapNumber
@@ skipping 1541 matching lines @@
 #define ACCESS_MASM(masm)    \
   masm->stop(__FILE_LINE__); \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 }
 }  // namespace v8::internal
 
 #endif  // V8_PPC_MACRO_ASSEMBLER_PPC_H_