From 51b526e4536076e43e4bd691779f6deb333b07eb Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Wed, 6 Mar 2019 13:56:04 -0500
Subject: [PATCH] A64: Implement CFINV

---
 src/CMakeLists.txt                            |  1 +
 src/frontend/A64/decoder/a64.inc              |  2 +-
 .../impl/system_flag_manipulation.cpp         | 19 +++++++++++++++++++
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 src/frontend/A64/translate/impl/system_flag_manipulation.cpp

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c9ef4fcb..da59d6f5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -175,6 +175,7 @@ add_library(dynarmic
     frontend/A64/translate/impl/simd_vector_x_indexed_element.cpp
     frontend/A64/translate/impl/sys_dc.cpp
     frontend/A64/translate/impl/system.cpp
+    frontend/A64/translate/impl/system_flag_manipulation.cpp
     frontend/A64/translate/translate.cpp
     frontend/A64/translate/translate.h
     frontend/A64/types.cpp
diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index ae47ff0e..328d4e13 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -81,7 +81,7 @@ INST(MSR_reg,                "MSR (register)",                            "11010
 INST(MRS,                    "MRS",                                       "110101010011poooNNNNMMMMooottttt")
 
 // System - Flag manipulation instructions
-//INST(CFINV,                  "CFINV",                                     "11010101000000000100000000011111") // ARMv8.4
+INST(CFINV,                  "CFINV",                                     "11010101000000000100000000011111") // ARMv8.4
 //INST(RMIF,                   "RMIF",                                      "10111010000iiiiii00001nnnnn0IIII") // ARMv8.4
 //INST(SETF8,                  "SETF8",                                     "0011101000000000000010nnnnn01101") // ARMv8.4
 //INST(SETF16,                 "SETF16",                                    "0011101000000000010010nnnnn01101") // ARMv8.4
diff --git a/src/frontend/A64/translate/impl/system_flag_manipulation.cpp b/src/frontend/A64/translate/impl/system_flag_manipulation.cpp
new file mode 100644
index 00000000..0ce291ff
--- /dev/null
+++ b/src/frontend/A64/translate/impl/system_flag_manipulation.cpp
@@ -0,0 +1,19 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2019 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#include "frontend/A64/translate/impl/impl.h"
+
+namespace Dynarmic::A64 {
+
+bool TranslatorVisitor::CFINV() {
+    const IR::U32 nzcv = ir.GetNZCVRaw();
+    const IR::U32 result = ir.Eor(nzcv, ir.Imm32(0x20000000));
+
+    ir.SetNZCVRaw(result);
+    return true;
+}
+
+} // namespace Dynarmic::A64