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-rw-r--r--arch/arc/lib/memcpy-700.S66
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arc/lib/memcpy-700.S b/arch/arc/lib/memcpy-700.S
new file mode 100644
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--- /dev/null
+++ b/arch/arc/lib/memcpy-700.S
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/linkage.h>
+
+ENTRY(memcpy)
+ or r3,r0,r1
+ asl_s r3,r3,30
+ mov_s r5,r0
+ brls.d r2,r3,.Lcopy_bytewise
+ sub.f r3,r2,1
+ ld_s r12,[r1,0]
+ asr.f lp_count,r3,3
+ bbit0.d r3,2,.Lnox4
+ bmsk_s r2,r2,1
+ st.ab r12,[r5,4]
+ ld.a r12,[r1,4]
+.Lnox4:
+ lppnz .Lendloop
+ ld_s r3,[r1,4]
+ st.ab r12,[r5,4]
+ ld.a r12,[r1,8]
+ st.ab r3,[r5,4]
+.Lendloop:
+ breq r2,0,.Last_store
+ ld r3,[r5,0]
+#ifdef __LITTLE_ENDIAN__
+ add3 r2,-1,r2
+ ; uses long immediate
+ xor_s r12,r12,r3
+ bmsk r12,r12,r2
+ xor_s r12,r12,r3
+#else /* BIG ENDIAN */
+ sub3 r2,31,r2
+ ; uses long immediate
+ xor_s r3,r3,r12
+ bmsk r3,r3,r2
+ xor_s r12,r12,r3
+#endif /* ENDIAN */
+.Last_store:
+ j_s.d [blink]
+ st r12,[r5,0]
+
+ .balign 4
+.Lcopy_bytewise:
+ jcs [blink]
+ ldb_s r12,[r1,0]
+ lsr.f lp_count,r3
+ bhs_s .Lnox1
+ stb.ab r12,[r5,1]
+ ldb.a r12,[r1,1]
+.Lnox1:
+ lppnz .Lendbloop
+ ldb_s r3,[r1,1]
+ stb.ab r12,[r5,1]
+ ldb.a r12,[r1,2]
+ stb.ab r3,[r5,1]
+.Lendbloop:
+ j_s.d [blink]
+ stb r12,[r5,0]
+END(memcpy)