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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
|
