diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2017-10-15 20:59:34 +0800 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2017-11-19 09:20:11 +0100 |
| commit | 2fcffe26e815b7125a357c83b59617ab93c16b41 (patch) | |
| tree | fe5a973dc4bbf38bce8468a4497f5f656f082a9f /libc/string/csky/cskyv2/abiv2_strcpy.S | |
| parent | 9e38e0aa45cca21d5023d0af94377f0e1e41d2f4 (diff) | |
csky: port to uclibc-ng
Follow the steps to build c-sky uclibc linux system:
1. git clone https://github.com/c-sky/buildroot.git
2. cd buildroot
3. make qemu_csky_ck810_uclibc_defconfig
4. make
Follow the buildroot/board/qemu/csky/readme.txt to run.
This buildroot toolchain is pre-build, But you can rebuild
the c-sky uclibc-ng alone and install it to the buildroot
sysroot manually.
We'll try our best to improve the uclibc-ng continuously.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'libc/string/csky/cskyv2/abiv2_strcpy.S')
| -rw-r--r-- | libc/string/csky/cskyv2/abiv2_strcpy.S | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/libc/string/csky/cskyv2/abiv2_strcpy.S b/libc/string/csky/cskyv2/abiv2_strcpy.S new file mode 100644 index 000000000..20262feae --- /dev/null +++ b/libc/string/csky/cskyv2/abiv2_strcpy.S @@ -0,0 +1,129 @@ +#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 |