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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Syscall restart trampoline for 32 and 64 bits processes.
*
* Copyright (C) 2018-2022 Helge Deller <deller@gmx.de>
* Copyright (C) 2022 John David Anglin <dave.anglin@bell.net>
*/
#include <asm/unistd.h>
#include <asm/vdso.h>
#include <linux/linkage.h>
.text
ENTRY_CFI(__kernel_restart_syscall)
/*
* Setup a trampoline to restart the syscall
* with __NR_restart_syscall
*/
/* load return pointer */
#if defined(__VDSO64__)
ldd 0(%sp), %r31
#elif defined(__VDSO32__)
ldw 0(%sp), %r31
#endif
be 0x100(%sr2, %r0)
ldi __NR_restart_syscall, %r20
ENDPROC_CFI(__kernel_restart_syscall)
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