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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 <features.h>
#include <endian.h>
#ifdef WANT_WIDE
# define Wstrcpy wcscpy
#else
# define Wstrcpy strcpy
#endif
.align 2
.global Wstrcpy
.type Wstrcpy, @function
Wstrcpy:
mov r6, r2
mov r7, r3
or r7, r6
andi r7, 3
cmpnei r7, 0
bf 2f
1:
ldb r5, (r3)
stb r5, (r6)
addi r3, 1
addi r6, 1
cmpnei r5, 0
bt 1b
1:
jmp r15
2:
ldw r5, (r3)
tstnbz r5
bf 10f
stw r5, (r6)
ldw r5, (r3, 4)
tstnbz r5
bf 3f
stw r5, (r6, 4)
ldw r5, (r3, 8)
tstnbz r5
bf 4f
stw r5, (r6, 8)
ldw r5, (r3, 12)
tstnbz r5
bf 5f
stw r5, (r6, 12)
ldw r5, (r3, 16)
tstnbz r5
bf 6f
stw r5, (r6, 16)
ldw r5, (r3, 20)
tstnbz r5
bf 7f
stw r5, (r6, 20)
ldw r5, (r3, 24)
tstnbz r5
bf 8f
stw r5, (r6, 24)
ldw r5, (r3, 28)
tstnbz r5
bf 9f
stw r5, (r6, 28)
addi r6, 32
addi r3, 32
br 2b
3:
addi r6, 4
br 10f
4:
addi r6, 8
br 10f
5:
addi r6, 12
br 10f
6:
addi r6, 16
br 10f
7:
addi r6, 20
br 10f
8:
addi r6, 24
br 10f
9:
addi r6, 28
10:
#ifdef __CSKYBE__
xtrb0 r1, r5
stb r1, (r6)
cmpnei r1, 0
bf 5f
xtrb1 r1, r5
stb r1, (r6, 1)
cmpnei r1, 0
bf 5f
xtrb2 r1, r5
stb r1, (r6, 2 )
cmpnei r1, 0
bf 5f
stw r5, (r6)
#else
xtrb3 r1, r5
stb r1, (r6)
cmpnei r1, 0
bf 5f
xtrb2 r1, r5
stb r1, (r6, 1)
cmpnei r1, 0
bf 5f
xtrb1 r1, r5
stb r1, (r6, 2)
cmpnei r1, 0
bf 5f
stw r5, (r6)
#endif
5:
jmp r15
libc_hidden_def(Wstrcpy)
.weak Wstrcpy
|
