From 27e4737b3a2850e28adedc530e2f628e2cf3f0da Mon Sep 17 00:00:00 2001
From: Edmund Grimley Evans <Edmund.Grimley-Evans@arm.com>
Date: Mon, 12 Sep 2016 09:19:36 +0100
Subject: [PATCH] i#1569 AArch64: Implement instr_is_mov_constant,
 instr_is_exclusive_store.

instr_is_mov_constant recognises mov{n,z}.
instr_is_exclusive_store recognises st{l,}x{p,r,rb,rh}.

Review-URL: https://codereview.appspot.com/307260043
---
 core/arch/aarch64/instr.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/core/arch/aarch64/instr.c b/core/arch/aarch64/instr.c
index cbb3c9ba58c..a025b395155 100644
--- a/core/arch/aarch64/instr.c
+++ b/core/arch/aarch64/instr.c
@@ -216,11 +216,11 @@ instr_is_mov_constant(instr_t *instr, ptr_int_t *value)
      */
 
     /* movn/movz reg, imm */
-    /* FIXME i#1569: NYI */
-    if (false) {
+    if (opc == OP_movn || opc == OP_movz) {
         opnd_t op = instr_get_src(instr, 0);
         if (opnd_is_immed_int(op)) {
-            *value = opnd_get_immed_int(op);
+            ptr_int_t imm = opnd_get_immed_int(op);
+            *value = (opc == OP_movn ? ~imm : imm);
             return true;
         } else
             return false;
@@ -375,6 +375,16 @@ DR_API
 bool
 instr_is_exclusive_store(instr_t *instr)
 {
-    /* FIXME i#1569: NYI */
+    switch (instr_get_opcode(instr)) {
+    case OP_stlxp:
+    case OP_stlxr:
+    case OP_stlxrb:
+    case OP_stlxrh:
+    case OP_stxp:
+    case OP_stxr:
+    case OP_stxrb:
+    case OP_stxrh:
+        return true;
+    }
     return false;
 }