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|
/*
* Copyright (C) 2017 Hangzhou C-SKY Microsystems co.,ltd.
*
* Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
* in this tarball.
*/
#include <endian.h>
#include "macro.S"
#ifdef WANT_WIDE
# define Wstrcpy wcscpy
#else
# define Wstrcpy strcpy
#endif
.align 2
.global Wstrcpy
.type Wstrcpy, @function
Wstrcpy:
mov a3, a0
or a2, a1, a3
andi t0, a2, 3
M_BEZ t0, 2f
mov t0, a1
1:
ld.b a2, (t0)
stb a2, (a3)
addi t0, t0, 1
addi a3, a3, 1
M_BNEZ a2, 1b
jmp r15
2:
ldw a2, (a1)
tstnbz a2
bf 11f
stw a2, (a3)
ldw a2, (a1, 4)
tstnbz a2
bf 4f
stw a2, (a3, 4)
ldw a2, (a1, 8)
tstnbz a2
bf 5f
stw a2, (a3, 8)
ldw a2, (a1, 12)
tstnbz a2
bf 6f
stw a2, (a3, 12)
ldw a2, (a1, 16)
tstnbz a2
bf 7f
stw a2, (a3, 16)
ldw a2, (a1, 20)
tstnbz a2
bf 8f
stw a2, (a3, 20)
ldw a2, (a1, 24)
tstnbz a2
bf 9f
stw a2, (a3, 24)
ldw a2, (a1, 28)
tstnbz a2
bf 10f
stw a2, (a3, 28)
addi a3, 32
addi a1, 32
br 2b
4:
addi a3, 4
br 11f
5:
addi a3, 8
br 11f
6:
addi a3, 12
br 11f
7:
addi a3, 16
br 11f
8:
addi a3, 20
br 11f
9:
addi a3, 24
br 11f
10:
addi a3, 28
11:
#ifdef __CSKYBE__
xtrb0 t0, a2
st.b t0, (a3)
M_BEZ t0, 5f
xtrb1 t0, a2
st.b t0, (a3, 1)
M_BEZ t0, 5f
xtrb2 t0, a2
st.b t0, (a3, 2 )
M_BEZ t0, 5f
stw a2, (a3)
#else
xtrb3 t0, a2
st.b t0, (a3)
M_BEZ t0, 5f
xtrb2 t0, a2
st.b t0, (a3, 1)
M_BEZ t0, 5f
xtrb1 t0, a2
st.b t0, (a3, 2)
M_BEZ t0, 5f
stw a2, (a3)
#endif
5:
jmp r15
libc_hidden_def(Wstrcpy)
.weak Wstrcpy
|
