1 files changed, 69 insertions, 0 deletions
diff --git a/runtime/arch/x86_64/context_x86_64.h b/runtime/arch/x86_64/context_x86_64.h
new file mode 100644
index 0000000000..3e491650b8
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+++ b/runtime/arch/x86_64/context_x86_64.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_X86_64_CONTEXT_X86_64_H_
+#define ART_RUNTIME_ARCH_X86_64_CONTEXT_X86_64_H_
+
+#include "arch/context.h"
+#include "base/logging.h"
+#include "registers_x86_64.h"
+
+namespace art {
+namespace x86_64 {
+
+class X86_64Context : public Context {
+ public:
+  X86_64Context() {
+    Reset();
+  }
+  virtual ~X86_64Context() {}
+
+  virtual void Reset();
+
+  virtual void FillCalleeSaves(const StackVisitor& fr) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  virtual void SetSP(uintptr_t new_sp) {
+    SetGPR(RSP, new_sp);
+  }
+
+  virtual void SetPC(uintptr_t new_pc) {
+    rip_ = new_pc;
+  }
+
+  virtual uintptr_t GetGPR(uint32_t reg) {
+    const uint32_t kNumberOfCpuRegisters = 8;
+    DCHECK_LT(reg, kNumberOfCpuRegisters);
+    return *gprs_[reg];
+  }
+
+  virtual void SetGPR(uint32_t reg, uintptr_t value);
+
+  virtual void SmashCallerSaves();
+  virtual void DoLongJump();
+
+ private:
+  // Pointers to register locations, floating point registers are all caller save. Values are
+  // initialized to NULL or the special registers below.
+  uintptr_t* gprs_[kNumberOfCpuRegisters];
+  // Hold values for rsp and rip if they are not located within a stack frame. RIP is somewhat
+  // special in that it cannot be encoded normally as a register operand to an instruction (except
+  // in 64bit addressing modes).
+  uintptr_t rsp_, rip_;
+};
+}  // namespace x86_64
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_X86_64_CONTEXT_X86_64_H_