54 lines
1.5 KiB
ArmAsm
54 lines
1.5 KiB
ArmAsm
/* 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)
|