6b13f685e
 김민수
BSP 최초 추가
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/*
* 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 <asm/linkage.h>
ARC_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]
ARC_EXIT memcpy
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