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-rw-r--r--arch/blackfin/lib/umulsi3_highpart.S31
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diff --git a/arch/blackfin/lib/umulsi3_highpart.S b/arch/blackfin/lib/umulsi3_highpart.S
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+/*
+ * Copyright 2007 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or the GPL-2 (or later)
+ */
+
+.align 2
+.global ___umulsi3_highpart;
+.type ___umulsi3_highpart, STT_FUNC;
+
+#ifdef CONFIG_ARITHMETIC_OPS_L1
+.section .l1.text
+#else
+.text
+#endif
+
+___umulsi3_highpart:
+ R2 = R1.H * R0.H, R3 = R1.L * R0.H (FU);
+ R0 = R1.L * R0.L, R1 = R1.H * R0.L (FU);
+ R0 >>= 16;
+ /* Unsigned multiplication has the nice property that we can
+ ignore carry on this first addition. */
+ R0 = R0 + R3;
+ R0 = R0 + R1;
+ cc = ac0;
+ R1 = cc;
+ R1 = PACK(R1.l,R0.h);
+ R0 = R1 + R2;
+ RTS;
+
+.size ___umulsi3_highpart, .-___umulsi3_highpart