Add {lda,stl}x?r{,b,h} instructions to ARM64 assembler/disassembler

src/arm64/macro-assembler-arm64.h

Index: src/arm64/macro-assembler-arm64.h
diff --git a/src/arm64/macro-assembler-arm64.h b/src/arm64/macro-assembler-arm64.h
index 67e64f4d672fb451cee506f7e7df151321f07d45..246d574257e78b045718fb8bce50548967116f19 100644
--- a/src/arm64/macro-assembler-arm64.h
+++ b/src/arm64/macro-assembler-arm64.h
@@ -68,6 +68,21 @@ namespace internal {
   V(Stp, CPURegister&, rt, rt2, StorePairOpFor(rt, rt2)) \
   V(Ldpsw, CPURegister&, rt, rt2, LDPSW_x)
 
+#define LDA_STL_MACRO_LIST(V) \
+  V(Ldarb, ldarb)             \
+  V(Ldarh, ldarh)             \
+  V(Ldar, ldar)               \
+  V(Ldaxrb, ldaxrb)           \
+  V(Ldaxrh, ldaxrh)           \
+  V(Ldaxr, ldaxr)             \
+  V(Stlrb, stlrb)             \
+  V(Stlrh, stlrh)             \
+  V(Stlr, stlr)
+
+#define STLX_MACRO_LIST(V) \
+  V(Stlxrb, stlxrb)        \
+  V(Stlxrh, stlxrh)        \
+  V(Stlxr, stlxr)
 
 // ----------------------------------------------------------------------------
 // Static helper functions
@@ -295,6 +310,17 @@ class MacroAssembler : public Assembler {
   void LoadStorePairMacro(const CPURegister& rt, const CPURegister& rt2,
                           const MemOperand& addr, LoadStorePairOp op);
 
+// Load-acquire/store-release macros.
+#define DECLARE_FUNCTION(FN, OP) \
+  inline void FN(const Register& rt, const Register& rn);
+  LDA_STL_MACRO_LIST(DECLARE_FUNCTION)
+#undef DECLARE_FUNCTION
+
+#define DECLARE_FUNCTION(FN, OP) \
+  inline void FN(const Register& rs, const Register& rt, const Register& rn);
+  STLX_MACRO_LIST(DECLARE_FUNCTION)
+#undef DECLARE_FUNCTION
+
   // V8-specific load/store helpers.
   void Load(const Register& rt, const MemOperand& addr, Representation r);
   void Store(const Register& rt, const MemOperand& addr, Representation r);