Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/nds32/math-emu/fnegd.c b/arch/nds32/math-emu/fnegd.c
new file mode 100644
index 0000000..de7ea6a
--- /dev/null
+++ b/arch/nds32/math-emu/fnegd.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2005-2018 Andes Technology Corporation
+#include <linux/uaccess.h>
+
+#include <asm/sfp-machine.h>
+#include <math-emu/soft-fp.h>
+#include <math-emu/double.h>
+void fnegd(void *ft, void *fa)
+{
+ FP_DECL_D(A);
+ FP_DECL_D(R);
+ FP_DECL_EX;
+
+ FP_UNPACK_DP(A, fa);
+
+ FP_NEG_D(R, A);
+
+ FP_PACK_DP(ft, R);
+
+ __FPU_FPCSR |= FP_CUR_EXCEPTIONS;
+}