12345678910111213141516171819202122232425262728293031323334 |
- /* 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 */
|