patch-2.1.9 linux/arch/sparc/lib/strncmp.S
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- Lines: 121
- Date:
Sat Nov 9 10:12:09 1996
- Orig file:
v2.1.8/linux/arch/sparc/lib/strncmp.S
- Orig date:
Thu Jan 1 02:00:00 1970
diff -u --recursive --new-file v2.1.8/linux/arch/sparc/lib/strncmp.S linux/arch/sparc/lib/strncmp.S
@@ -0,0 +1,120 @@
+/* $Id: strncmp.S,v 1.2 1996/09/09 02:47:20 davem Exp $
+ * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
+ * generic strncmp routine.
+ */
+
+#include <asm/cprefix.h>
+
+ .text
+ .align 4
+ .global C_LABEL(__strncmp), C_LABEL(strncmp)
+C_LABEL(__strncmp):
+C_LABEL(strncmp):
+ mov %o0, %g3
+ mov 0, %o3
+
+ cmp %o2, 3
+ ble 7f
+ mov 0, %g2
+
+ sra %o2, 2, %o4
+ ldub [%g3], %o3
+
+0:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3,1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be,a 1f
+ ldub [%g3], %o3
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be 1f
+ add %o4, -1, %o4
+
+ retl
+ sub %o0, %g2, %o0
+
+1:
+
+ cmp %o4, 0
+ bg,a 0b
+ ldub [%g3], %o3
+
+ b 7f
+ and %o2, 3, %o2
+
+9:
+ ldub [%o1], %g2
+ add %g3, 1, %g3
+ and %o3, 0xff, %o0
+
+ cmp %o0, 0
+ be 8f
+ add %o1, 1, %o1
+
+ cmp %o0, %g2
+ be 7f
+ add %o2, -1, %o2
+
+8:
+ retl
+ sub %o0, %g2, %o0
+
+7:
+ cmp %o2, 0
+ bg,a 9b
+ ldub [%g3], %o3
+
+ and %g2, 0xff, %o0
+ retl
+ sub %o3, %o0, %o0
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