C6X: library code
Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter <msalter@redhat.com>
Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/c6x/lib/memcpy_64plus.S b/arch/c6x/lib/memcpy_64plus.S
new file mode 100644
index 0000000..0bbc2cb
--- /dev/null
+++ b/arch/c6x/lib/memcpy_64plus.S
@@ -0,0 +1,46 @@
+; Port on Texas Instruments TMS320C6x architecture
+;
+; Copyright (C) 2006, 2009, 2010 Texas Instruments Incorporated
+; Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.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>
+
+ .text
+
+ENTRY(memcpy)
+ AND .L1 0x1,A6,A0
+ || AND .S1 0x2,A6,A1
+ || AND .L2X 0x4,A6,B0
+ || MV .D1 A4,A3
+ || MVC .S2 ILC,B2
+
+ [A0] LDB .D2T1 *B4++,A5
+ [A1] LDB .D2T1 *B4++,A7
+ [A1] LDB .D2T1 *B4++,A8
+ [B0] LDNW .D2T1 *B4++,A9
+ || SHRU .S2X A6,0x3,B1
+ [!B1] BNOP .S2 B3,1
+
+ [A0] STB .D1T1 A5,*A3++
+ ||[B1] MVC .S2 B1,ILC
+ [A1] STB .D1T1 A7,*A3++
+ [A1] STB .D1T1 A8,*A3++
+ [B0] STNW .D1T1 A9,*A3++ ; return when len < 8
+
+ SPLOOP 2
+
+ LDNDW .D2T1 *B4++,A9:A8
+ NOP 3
+
+ NOP
+ SPKERNEL 0,0
+ || STNDW .D1T1 A9:A8,*A3++
+
+ BNOP .S2 B3,4
+ MVC .S2 B2,ILC
+ENDPROC(memcpy)