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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sh/lib/div64.S
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sh/lib/div64.S')
-rw-r--r--arch/sh/lib/div64.S46
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/sh/lib/div64.S b/arch/sh/lib/div64.S
new file mode 100644
index 000000000000..eefc275d64a7
--- /dev/null
+++ b/arch/sh/lib/div64.S
@@ -0,0 +1,46 @@
+/*
+ * unsigned long long __xdiv64_32(unsigned long long n, unsigned long d);
+ */
+
+#include <linux/linkage.h>
+
+.text
+ENTRY(__xdiv64_32)
+#ifdef __LITTLE_ENDIAN__
+ mov r4, r0
+ mov r5, r1
+#else
+ mov r4, r1
+ mov r5, r0
+#endif
+ cmp/hs r6, r1
+ bf.s 1f
+ mov #0, r2
+
+ mov r1, r2
+ mov #0, r3
+ div0u
+ .rept 32
+ rotcl r2
+ div1 r6, r3
+ .endr
+ rotcl r2
+ mul.l r6, r2
+ sts macl, r3
+ sub r3, r1
+1:
+ div0u
+ .rept 32
+ rotcl r0
+ div1 r6, r1
+ .endr
+#ifdef __LITTLE_ENDIAN__
+ mov r2, r1
+ rts
+ rotcl r0
+#else
+ rotcl r0
+ mov r0, r1
+ rts
+ mov r2, r0
+#endif