1 files changed, 61 insertions, 0 deletions
diff --git a/libc/string/avr32/memcmp.S b/libc/string/avr32/memcmp.S
new file mode 100644
index 000000000..5d7eac3d9
--- /dev/null
+++ b/libc/string/avr32/memcmp.S
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2004-2007 Atmel Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License.  See the file "COPYING.LIB" in the main directory of this
+ * archive for more details.
+ */
+
+#include <features.h>
+
+#define s1 r12
+#define s2 r11
+#define len r10
+
+       .text
+       .global memcmp
+       .type   memcmp, @function
+       .align  1
+memcmp:
+       sub     len, 4
+       brlt    .Lless_than_4
+
+1:     ld.w    r8, s1++
+       ld.w    r9, s2++
+       cp.w    r8, r9
+       brne    .Lfound_word
+       sub     len, 4
+       brge    1b
+
+.Lless_than_4:
+       sub     len, -4
+       reteq   0
+
+1:     ld.ub   r8, s1++
+       ld.ub   r9, s2++
+       sub     r8, r9
+       retne   r8
+       sub     len, 1
+       brgt    1b
+
+       retal   0
+
+.Lfound_word:
+       mov     len, 4
+
+2:     bfextu  r11, r9, 24, 8
+       bfextu  r12, r8, 24, 8
+       sub     r12, r11
+       retne   r12
+       lsl     r8, 8
+       lsl     r9, 8
+       sub     len, 1
+       brne    2b
+       retal   r12
+
+       .size   memcmp, . - memcmp
+
+libc_hidden_def(memcmp)
+#ifdef __UCLIBC_SUSV3_LEGACY__
+strong_alias(memcmp,bcmp)
+#endif