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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/sparc/lib/strncmp_32.S
Initial import
Diffstat (limited to 'arch/sparc/lib/strncmp_32.S')
-rw-r--r--arch/sparc/lib/strncmp_32.S118
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S
new file mode 100644
index 000000000..c0d1b568c
--- /dev/null
+++ b/arch/sparc/lib/strncmp_32.S
@@ -0,0 +1,118 @@
+/*
+ * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
+ * generic strncmp routine.
+ */
+
+#include <linux/linkage.h>
+
+ .text
+ENTRY(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
+ENDPROC(strncmp)