Introduce PopReturnAddressTo and PushReturnAddressFrom macro-assembler instructions for X64

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2780 matching lines @@
 
 void MacroAssembler::Ret() {
   ret(0);
 }
 
 
 void MacroAssembler::Ret(int bytes_dropped, Register scratch) {
   if (is_uint16(bytes_dropped)) {
     ret(bytes_dropped);
   } else {
-    pop(scratch);
+    PopReturnAddressTo(scratch);
     addq(rsp, Immediate(bytes_dropped));
-    push(scratch);
+    PushReturnAddressFrom(scratch);
     ret(0);
   }
 }
 
 
 void MacroAssembler::FCmp() {
   fucomip();
   fstp(0);
 }
 
@@ skipping 746 matching lines @@
     }
   }
   // Get the return address from the stack and restore the frame pointer.
   movq(rcx, Operand(rbp, 1 * kPointerSize));
   movq(rbp, Operand(rbp, 0 * kPointerSize));
 
   // Drop everything up to and including the arguments and the receiver
   // from the caller stack.
   lea(rsp, Operand(r15, 1 * kPointerSize));
 
-  // Push the return address to get ready to return.
-  push(rcx);
+  PushReturnAddressFrom(rcx);
 
   LeaveExitFrameEpilogue();
 }
 
 
 void MacroAssembler::LeaveApiExitFrame() {
   movq(rsp, rbp);
   pop(rbp);
 
   LeaveExitFrameEpilogue();
@@ skipping 1112 matching lines @@
   j(greater, &no_memento_available);
   CompareRoot(MemOperand(scratch_reg, -AllocationMemento::kSize),
               Heap::kAllocationMementoMapRootIndex);
   bind(&no_memento_available);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64