From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/powerpc/math-emu/mtfsfi.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 arch/powerpc/math-emu/mtfsfi.c

(limited to 'arch/powerpc/math-emu/mtfsfi.c')

diff --git a/arch/powerpc/math-emu/mtfsfi.c b/arch/powerpc/math-emu/mtfsfi.c
new file mode 100644
index 00000000..fd2acc26
--- /dev/null
+++ b/arch/powerpc/math-emu/mtfsfi.c
@@ -0,0 +1,24 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include <asm/sfp-machine.h>
+#include <math-emu/soft-fp.h>
+
+int
+mtfsfi(unsigned int crfD, unsigned int IMM)
+{
+	u32 mask = 0xf;
+
+	if (!crfD)
+		mask = 9;
+
+	__FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
+	__FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
+
+#ifdef DEBUG
+	printk("%s: %d %x: %08lx\n", __func__, crfD, IMM, __FPU_FPSCR);
+#endif
+
+	return 0;
+}
-- 
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