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60 lines
1.6 KiB
ArmAsm
60 lines
1.6 KiB
ArmAsm
/* Cancellable syscall wrapper. Linux/AArch64 version.
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Copyright (C) 2023-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <descr-const.h>
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/* long int [x0] __syscall_cancel_arch (int *cancelhandling [x0],
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long int nr [x1],
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long int arg1 [x2],
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long int arg2 [x3],
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long int arg3 [x4],
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long int arg4 [x5],
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long int arg5 [x6],
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long int arg6 [x7]) */
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ENTRY (__syscall_cancel_arch)
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.globl __syscall_cancel_arch_start
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__syscall_cancel_arch_start:
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/* if (*cancelhandling & CANCELED_BITMASK)
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__syscall_do_cancel() */
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ldr w0, [x0]
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tbnz w0, TCB_CANCELED_BIT, 1f
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/* Issue a 6 argument syscall, the nr [x1] being the syscall
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number. */
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mov x8, x1
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mov x0, x2
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mov x1, x3
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mov x2, x4
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mov x3, x5
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mov x4, x6
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mov x5, x7
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svc 0x0
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.globl __syscall_cancel_arch_end
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__syscall_cancel_arch_end:
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ret
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1:
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b __syscall_do_cancel
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END (__syscall_cancel_arch)
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