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/* Cancellable syscall wrapper. Linux/or1k 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>
ENTRY (__syscall_cancel_arch)
l.addi r1, r1, -4
cfi_def_cfa_offset (4)
l.sw 0(r1), r9
cfi_offset (9, -4)
.global __syscall_cancel_arch_start
__syscall_cancel_arch_start:
/* if (*cancelhandling & CANCELED_BITMASK)
__syscall_do_cancel() */
l.movhi r19, hi(0)
l.lwz r17, 0(r3)
l.andi r17, r17, 8
l.sfeq r17, r19
l.bnf 1f
/* Issue a 6 argument syscall. */
l.or r11, r4, r4
l.or r3, r5, r5
l.or r4, r6, r6
l.or r5, r7, r7
l.or r6, r8, r8
l.lwz r7, 4(r1)
l.lwz r8, 8(r1)
l.sys 1
l.nop
.global __syscall_cancel_arch_end
__syscall_cancel_arch_end:
l.lwz r9, 0(r1)
l.jr r9
l.addi r1, r1, 4
cfi_remember_state
cfi_def_cfa_offset (0)
cfi_restore (9)
1:
cfi_restore_state
l.jal __syscall_do_cancel
l.nop
END (__syscall_cancel_arch)
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