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| author | caiyinyu <caiyinyu@loongson.cn> | 2022-07-19 09:20:50 +0800 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-07-26 12:35:12 -0300 |
| commit | 45955fe61844d94f7faa660eda9e515a6571e8c3 (patch) | |
| tree | 604ccc92c973e5a8b59e90d322e91f588422b391 /sysdeps/unix/sysv/linux/loongarch/sysdep.S | |
| parent | 327588226198995d2daa62e127ef45af9bcf182d (diff) | |
| download | glibc-45955fe61844d94f7faa660eda9e515a6571e8c3.zip glibc-45955fe61844d94f7faa660eda9e515a6571e8c3.tar.gz glibc-45955fe61844d94f7faa660eda9e515a6571e8c3.tar.bz2 | |
LoongArch: Linux Syscall Interface
Diffstat (limited to 'sysdeps/unix/sysv/linux/loongarch/sysdep.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/sysdep.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/loongarch/sysdep.S b/sysdeps/unix/sysv/linux/loongarch/sysdep.S new file mode 100644 index 0000000..a4db2a9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/sysdep.S @@ -0,0 +1,53 @@ +/* syscall error handlers + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#if IS_IN (libc) +# define errno __libc_errno +#endif + +ENTRY (__syscall_error) +/* Fall through to __syscall_set_errno */ +END (__syscall_error) + +/* Non-standard calling convention: argument in a0, return address in t0, + and clobber only t1. + */ +ENTRY (__syscall_set_errno) + +/* We got here because a0 < 0, but only codes in the range [-4095, -1] + represent errors. Otherwise, just return the result normally. + */ + li.d t1, -4096 + bgeu t1, a0, L (out) + sub.w a0, zero, a0 +#if RTLD_PRIVATE_ERRNO + la t1, rtld_errno +#elif defined(__PIC__) + la.tls.ie t1, errno + add.d t1, tp, t1 +#else + la.tls.le t1, errno + add.d t1, tp, t1 +#endif + st.w a0, t1, 0 + li.d a0, -1 +L (out): + ret +END (__syscall_set_errno) |