Orange Pi5 kernel

/* 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_RISCV_UCONTEXT_H
#define _UAPI_ASM_RISCV_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_RISCV_UCONTEXT_H */