mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
64 lines
1.6 KiB
ArmAsm
64 lines
1.6 KiB
ArmAsm
/* Cancellable syscall wrapper. Linux/or1k version.
|
|
Copyright (C) 2023-2025 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)
|