/* 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 */