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/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ /* * Copyright (C) 2012 ARM Ltd. * Copyright (C) 2017 SiFive, Inc. * * This file was copied from arch/arm64/include/uapi/asm/ucontext.h */ #ifndef _UAPI__ASM_UCONTEXT_H #define _UAPI__ASM_UCONTEXT_H #include <linux/types.h> struct ucontext { unsigned long uc_flags; struct ucontext *uc_link; stack_t uc_stack; sigset_t uc_sigmask; /* There's some padding here to allow sigset_t to be expanded in the * future. Though this is unlikely, other architectures put uc_sigmask * at the end of this structure and explicitly state it can be * expanded, so we didn't want to box ourselves in here. */ __u8 __unused[1024 / 8 - sizeof(sigset_t)]; /* We can't put uc_sigmask at the end of this structure because we need * to be able to expand sigcontext in the future. For example, the * vector ISA extension will almost certainly add ISA state. We want * to ensure all user-visible ISA state can be saved and restored via a * ucontext, so we're putting this at the end in order to allow for * infinite extensibility. Since we know this will be extended and we * assume sigset_t won't be extended an extreme amount, we're * prioritizing this. */ struct sigcontext uc_mcontext; }; #endif /* _UAPI__ASM_UCONTEXT_H */
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