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/* Copyright (c) 2019 SiFive Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use,
modify, copy, or redistribute it subject to the terms and conditions
of the FreeBSD License. This program is distributed in the hope that
it will be useful, but WITHOUT ANY WARRANTY expressed or implied,
including the implied warranties of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. A copy of this license is available at
http://www.opensource.org/licenses.
*/
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
.text
.global memmove
.type memmove, @function
memmove:
beqz a2, 2f
mv t1, a0
li a3, 1
bgtu a1, a0, 1f
li a3, -1
addi a4, a2 , -1
add t1, t1, a4
add a1, a1, a4
1:
lb t2, 0(a1)
sb t2, 0(t1)
add a2, a2, -1
add t1, t1, a3
add a1, a1, a3
bnez a2, 1b
2:
ret
.size memmove, .-memmove
#endif
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