1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/jit/arm64/SharedICRegisters-arm64.h b/js/src/jit/arm64/SharedICRegisters-arm64.h
new file mode 100644
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--- /dev/null
+++ b/js/src/jit/arm64/SharedICRegisters-arm64.h
@@ -0,0 +1,58 @@
+/* -*- 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_SharedICRegisters_arm64_h
+#define jit_arm64_SharedICRegisters_arm64_h
+
+#include "jit/MacroAssembler.h"
+
+namespace js {
+namespace jit {
+
+// Must be a callee-saved register for preservation around generateEnterJIT().
+static constexpr Register BaselineFrameReg = r23;
+static constexpr ARMRegister BaselineFrameReg64 = { BaselineFrameReg, 64 };
+
+// BaselineStackReg is intentionally undefined on ARM64.
+// Refer to the comment next to the definition of RealStackPointer.
+
+// ValueOperands R0, R1, and R2.
+// R0 == JSReturnReg, and R2 uses registers not preserved across calls.
+// R1 value should be preserved across calls.
+static constexpr Register R0_ = r2;
+static constexpr Register R1_ = r19;
+static constexpr Register R2_ = r0;
+
+static constexpr ValueOperand R0(R0_);
+static constexpr ValueOperand R1(R1_);
+static constexpr ValueOperand R2(R2_);
+
+// ICTailCallReg and ICStubReg use registers that are not preserved across calls.
+static constexpr Register ICTailCallReg = r30;
+static constexpr Register ICStubReg = r9;
+
+// ExtractTemps must be callee-save registers:
+// ICSetProp_Native::Compiler::generateStubCode() stores the object
+// in ExtractTemp0, but then calls callTypeUpdateIC(), which clobbers
+// caller-save registers.
+// They should also not be the scratch registers ip0 or ip1,
+// since those get clobbered all the time.
+static constexpr Register ExtractTemp0 = r24;
+static constexpr Register ExtractTemp1 = r25;
+
+// R7 - R9 are generally available for use within stubcode.
+
+// Note that BaselineTailCallReg is actually just the link
+// register.  In ARM code emission, we do not clobber BaselineTailCallReg
+// since we keep the return address for calls there.
+
+static constexpr FloatRegister FloatReg0 = { FloatRegisters::d0, FloatRegisters::Double };
+static constexpr FloatRegister FloatReg1 = { FloatRegisters::d1, FloatRegisters::Double };
+
+} // namespace jit
+} // namespace js
+
+#endif // jit_arm64_SharedICRegisters_arm64_h