/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __LOONGARCH_UAPI_ASM_UCONTEXT_H
#define __LOONGARCH_UAPI_ASM_UCONTEXT_H

/**
 * struct ucontext - user context structure
 * @uc_flags:
 * @uc_link:
 * @uc_stack:
 * @uc_mcontext:        holds basic processor state
 * @uc_sigmask:
 * @uc_extcontext:      holds extended processor state
 */
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 /* __LOONGARCH_UAPI_ASM_UCONTEXT_H */