1 files changed, 86 insertions, 0 deletions
diff --git a/js/src/jit/arm64/MoveEmitter-arm64.h b/js/src/jit/arm64/MoveEmitter-arm64.h
new file mode 100644
index 000000000..09f96315f
--- /dev/null
+++ b/js/src/jit/arm64/MoveEmitter-arm64.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_arm64_MoveEmitter_arm64_h
+#define jit_arm64_MoveEmitter_arm64_h
+
+#include "jit/arm64/Assembler-arm64.h"
+#include "jit/MacroAssembler.h"
+#include "jit/MoveResolver.h"
+
+namespace js {
+namespace jit {
+
+class CodeGenerator;
+
+class MoveEmitterARM64
+{
+    bool inCycle_;
+    MacroAssembler& masm;
+
+    // Original stack push value.
+    uint32_t pushedAtStart_;
+
+    // These store stack offsets to spill locations, snapshotting
+    // codegen->framePushed_ at the time they were allocated. They are -1 if no
+    // stack space has been allocated for that particular spill.
+    int32_t pushedAtCycle_;
+    int32_t pushedAtSpill_;
+
+    void assertDone() {
+        MOZ_ASSERT(!inCycle_);
+    }
+
+    MemOperand cycleSlot();
+    MemOperand toMemOperand(const MoveOperand& operand) const;
+    ARMRegister toARMReg32(const MoveOperand& operand) const {
+        MOZ_ASSERT(operand.isGeneralReg());
+        return ARMRegister(operand.reg(), 32);
+    }
+    ARMRegister toARMReg64(const MoveOperand& operand) const {
+        if (operand.isGeneralReg())
+            return ARMRegister(operand.reg(), 64);
+        else
+            return ARMRegister(operand.base(), 64);
+    }
+    ARMFPRegister toFPReg(const MoveOperand& operand, MoveOp::Type t) const {
+        MOZ_ASSERT(operand.isFloatReg());
+        return ARMFPRegister(operand.floatReg().encoding(), t == MoveOp::FLOAT32 ? 32 : 64);
+    }
+
+    void emitFloat32Move(const MoveOperand& from, const MoveOperand& to);
+    void emitDoubleMove(const MoveOperand& from, const MoveOperand& to);
+    void emitInt32Move(const MoveOperand& from, const MoveOperand& to);
+    void emitGeneralMove(const MoveOperand& from, const MoveOperand& to);
+
+    void emitMove(const MoveOp& move);
+    void breakCycle(const MoveOperand& from, const MoveOperand& to, MoveOp::Type type);
+    void completeCycle(const MoveOperand& from, const MoveOperand& to, MoveOp::Type type);
+
+  public:
+    MoveEmitterARM64(MacroAssembler& masm)
+      : inCycle_(false),
+        masm(masm),
+        pushedAtStart_(masm.framePushed()),
+        pushedAtCycle_(-1),
+        pushedAtSpill_(-1)
+    { }
+
+    ~MoveEmitterARM64() {
+        assertDone();
+    }
+
+    void emit(const MoveResolver& moves);
+    void finish();
+    void setScratchRegister(Register reg) {}
+};
+
+typedef MoveEmitterARM64 MoveEmitter;
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_arm64_MoveEmitter_arm64_h */