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/* Cancellable syscall wrapper. Linux/AArch64 version.
Copyright (C) 2023 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
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <descr-const.h>
/* long int [x0] __syscall_cancel_arch (int *cancelhandling [x0],
long int nr [x1],
long int arg1 [x2],
long int arg2 [x3],
long int arg3 [x4],
long int arg4 [x5],
long int arg5 [x6],
long int arg6 [x7]) */
ENTRY (__syscall_cancel_arch)
.globl __syscall_cancel_arch_start
__syscall_cancel_arch_start:
/* if (*cancelhandling & CANCELED_BITMASK)
__syscall_do_cancel() */
ldr w0, [x0]
tbnz w0, TCB_CANCELED_BIT, 1f
/* Issue a 6 argument syscall, the nr [x1] being the syscall
number. */
mov x8, x1
mov x0, x2
mov x1, x3
mov x2, x4
mov x3, x5
mov x4, x6
mov x5, x7
svc 0x0
.globl __syscall_cancel_arch_end
__syscall_cancel_arch_end:
ret
1:
b __syscall_do_cancel
END (__syscall_cancel_arch)
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