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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 <[email protected]>
- * Copyright (C) 2022 John David Anglin <[email protected]>
- */
- #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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