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/*
* Copyright (C) 2004, 2007-2010, 2011-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
.global memcpy
.align 4
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]
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