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/* 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)
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