1 files changed, 59 insertions, 0 deletions

diff --git a/arch/sh/lib64/udivsi3.S b/arch/sh/lib64/udivsi3.S
new file mode 100644
index 000000000000..e68120e4b847
--- /dev/null
+++ b/arch/sh/lib64/udivsi3.S
@@ -0,0 +1,59 @@
+        .global __udivsi3
+        .section        .text..SHmedia32,"ax"
+        .align  2
+
+/*
+   inputs: r4,r5
+   clobbered: r18,r19,r20,r21,r22,r25,tr0
+   result in r0.
+ */
+__udivsi3:
+        addz.l r5,r63,r22
+        nsb r22,r0
+        shlld r22,r0,r25
+        shlri r25,48,r25
+        movi 0xffffffffffffbb0c,r20 /* shift count eqiv 76 */
+        sub r20,r25,r21
+        mmulfx.w r21,r21,r19
+        mshflo.w r21,r63,r21
+        ptabs r18,tr0
+        mmulfx.w r25,r19,r19
+        sub r20,r0,r0
+        /* bubble */
+        msub.w r21,r19,r19
+
+        /*
+         * It would be nice for scheduling to do this add to r21 before
+         * the msub.w, but we need a different value for r19 to keep
+         * errors under control.
+         */
+        addi r19,-2,r21
+        mulu.l r4,r21,r18
+        mmulfx.w r19,r19,r19
+        shlli r21,15,r21
+        shlrd r18,r0,r18
+        mulu.l r18,r22,r20
+        mmacnfx.wl r25,r19,r21
+        /* bubble */
+        sub r4,r20,r25
+
+        mulu.l r25,r21,r19
+        addi r0,14,r0
+        /* bubble */
+        shlrd r19,r0,r19
+        mulu.l r19,r22,r20
+        add r18,r19,r18
+        /* bubble */
+        sub.l r25,r20,r25
+
+        mulu.l r25,r21,r19
+        addz.l r25,r63,r25
+        sub r25,r22,r25
+        shlrd r19,r0,r19
+        mulu.l r19,r22,r20
+        addi r25,1,r25
+        add r18,r19,r18
+
+        cmpgt r25,r20,r25
+        add.l r18,r25,r0
+        blink tr0,r63