From 2a6619d59c2c22d92ff8eac6a26b632545d769dd Mon Sep 17 00:00:00 2001
From: MerryMage <MerryMage@users.noreply.github.com>
Date: Tue, 13 Feb 2018 12:23:04 +0000
Subject: [PATCH] A64: Implement CLREX

---
 src/frontend/A64/decoder/a64.inc           | 2 +-
 src/frontend/A64/translate/impl/system.cpp | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index d6345a63..4ce46a1d 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -61,7 +61,7 @@ INST(SEVL,                   "SEVL",                                      "11010
 //INST(AUTIB_2,                "AUTIB, AUTIB1716, AUTIBSP, AUTIBZ, AUTIZB", "1101010100000011001000-111-11111")
 //INST(ESB,                    "ESB",                                       "11010101000000110010001000011111")
 //INST(PSB,                    "PSB CSYNC",                                 "11010101000000110010001000111111")
-//INST(CLREX,                  "CLREX",                                     "11010101000000110011MMMM01011111")
+INST(CLREX,                  "CLREX",                                     "11010101000000110011MMMM01011111")
 INST(DSB,                    "DSB",                                       "11010101000000110011MMMM10011111")
 INST(DMB,                    "DMB",                                       "11010101000000110011MMMM10111111")
 //INST(ISB,                    "ISB",                                       "11010101000000110011MMMM11011111")
diff --git a/src/frontend/A64/translate/impl/system.cpp b/src/frontend/A64/translate/impl/system.cpp
index f6ee1bcd..2bfa0f82 100644
--- a/src/frontend/A64/translate/impl/system.cpp
+++ b/src/frontend/A64/translate/impl/system.cpp
@@ -36,6 +36,11 @@ bool TranslatorVisitor::SEVL() {
     return true;
 }
 
+bool TranslatorVisitor::CLREX(Imm<4> /*CRm*/) {
+    ir.ClearExclusive();
+    return true;
+}
+
 bool TranslatorVisitor::DSB(Imm<4> /*CRm*/) {
     ir.DataSynchronizationBarrier();
     return true;