ARM64: push/pop registers in stubs for safepoints

src/arm64/code-stubs-arm64.h

 // Copyright 2013 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 59 matching lines @@
 
   static void GenerateHashGetHash(MacroAssembler* masm,
                                   Register hash,
                                   Register scratch);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
 };
 
 
+class StoreRegistersStateStub: public PlatformCodeStub {
+ public:
+  explicit StoreRegistersStateStub(SaveFPRegsMode with_fp)
+      : save_doubles_(with_fp) {}
+
+  static Register to_be_pushed_lr() { return ip0; }
+  static void GenerateAheadOfTime(Isolate* isolate);
+ private:
+  Major MajorKey() { return StoreRegistersState; }
+  int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; }
+  SaveFPRegsMode save_doubles_;
+
+  void Generate(MacroAssembler* masm);
+};
+
+
+class RestoreRegistersStateStub: public PlatformCodeStub {
+ public:
+  explicit RestoreRegistersStateStub(SaveFPRegsMode with_fp)
+      : save_doubles_(with_fp) {}
+
+  static void GenerateAheadOfTime(Isolate* isolate);
+ private:
+  Major MajorKey() { return RestoreRegistersState; }
+  int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; }
+  SaveFPRegsMode save_doubles_;
+
+  void Generate(MacroAssembler* masm);
+};
+
+
 class RecordWriteStub: public PlatformCodeStub {
  public:
   // Stub to record the write of 'value' at 'address' in 'object'.
   // Typically 'address' = 'object' + <some offset>.
   // See MacroAssembler::RecordWriteField() for example.
   RecordWriteStub(Register object,
                   Register value,
                   Register address,
                   RememberedSetAction remembered_set_action,
                   SaveFPRegsMode fp_mode)
@@ skipping 370 matching lines @@
   TargetAddressStorageMode storage_mode() { return storage_mode_; }
 
  private:
   TargetAddressStorageMode storage_mode_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CODE_STUBS_ARM64_H_