fp: Implement FPProcessException

src/CMakeLists.txt

@@ -18,6 +18,8 @@ add_library(dynarmic
     common/crc32.h
     common/fp/fpsr.h
     common/fp/info.h
+    common/fp/process_exception.cpp
+    common/fp/process_exception.h
     common/fp/rounding_mode.h
     common/fp/util.h
     common/intrusive_list.h

src/common/fp/process_exception.cpp

@@ -0,0 +1,58 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 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 "common/assert.h"
+#include "common/fp/fpsr.h"
+#include "common/fp/process_exception.h"
+#include "frontend/A64/FPCR.h"
+
+namespace Dynarmic::FP {
+
+void FPProcessException(FPExc exception, FPCR fpcr, FPSR& fpsr) {
+    switch (exception) {
+    case FPExc::InvalidOp:
+        if (fpcr.IOE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.IOC(true);
+        break;
+    case FPExc::DivideByZero:
+        if (fpcr.DZE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.DZC(true);
+        break;
+    case FPExc::Overflow:
+        if (fpcr.OFE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.OFC(true);
+        break;
+    case FPExc::Underflow:
+        if (fpcr.UFE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.UFC(true);
+        break;
+    case FPExc::Inexact:
+        if (fpcr.IXE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.IXC(true);
+        break;
+    case FPExc::InputDenorm:
+        if (fpcr.IDE()) {
+            UNIMPLEMENTED();
+        }
+        fpsr.IDC(true);
+        break;
+    default:
+        UNREACHABLE();
+        break;
+    }
+}
+
+} // namespace Dynarmic::FP 

src/common/fp/process_exception.h

@@ -0,0 +1,27 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#pragma once
+
+#include "common/fp/fpsr.h"
+#include "frontend/A64/FPCR.h"
+
+namespace Dynarmic::FP {
+
+using FPCR = A64::FPCR;
+
+enum class FPExc {
+    InvalidOp,
+    DivideByZero,
+    Overflow,
+    Underflow,
+    Inexact,
+    InputDenorm,
+};
+
+void FPProcessException(FPExc exception, FPCR fpcr, FPSR& fpsr);
+
+} // namespace Dynarmic::FP