1 files changed, 30 insertions, 0 deletions

diff --git a/arch/blackfin/lib/smulsi3_highpart.S b/arch/blackfin/lib/smulsi3_highpart.S
new file mode 100644
index 000000000000..10b8f8da576f
--- /dev/null
+++ b/arch/blackfin/lib/smulsi3_highpart.S
@@ -0,0 +1,30 @@
+.align 2
+.global ___smulsi3_highpart;
+.type ___smulsi3_highpart, STT_FUNC;
+
+#ifdef CONFIG_ARITHMETIC_OPS_L1
+.section .l1.text
+#else
+.text
+#endif
+
+___smulsi3_highpart:
+        R2 = R1.L * R0.L (FU);
+        R3 = R1.H * R0.L (IS,M);
+        R0 = R0.H * R1.H, R1 = R0.H * R1.L (IS,M);
+
+        R1.L = R2.H + R1.L;
+        cc = ac0;
+        R2 = cc;
+
+        R1.L = R1.L + R3.L;
+        cc = ac0;
+        R1 >>>= 16;
+        R3 >>>= 16;
+        R1 = R1 + R3;
+        R1 = R1 + R2;
+        R2 = cc;
+        R1 = R1 + R2;
+
+        R0 = R0 + R1;
+        RTS;