/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_COMPAT_H
#define _ASM_COMPAT_H
/*
 * Architecture specific compatibility types
 */
#include <linux/thread_info.h>
#include <linux/types.h>
#include <asm/page.h>
#include <asm/ptrace.h>

#define __compat_uid_t    __compat_uid_t
typedef s32        __compat_uid_t;
typedef s32        __compat_gid_t;

typedef __compat_uid_t    __compat_uid32_t;
typedef __compat_gid_t    __compat_gid32_t;
#define __compat_uid32_t __compat_uid32_t

#define compat_statfs        compat_statfs
#define compat_ipc64_perm    compat_ipc64_perm

#define _COMPAT_NSIG        128        /* Don't ask !$@#% ...    */
#define _COMPAT_NSIG_BPW    32
typedef u32        compat_sigset_word;

#define COMPAT_RLIM_INFINITY    0x7fffffffUL

#include <asm-generic/compat.h>

#define COMPAT_UTS_MACHINE    "mips\0\0\0"

typedef u32        compat_nlink_t;

struct compat_stat {
    compat_dev_t    st_dev;
    s32        st_pad1[3];
    compat_ino_t    st_ino;
    compat_mode_t    st_mode;
    compat_nlink_t    st_nlink;
    __compat_uid_t    st_uid;
    __compat_gid_t    st_gid;
    compat_dev_t    st_rdev;
    s32        st_pad2[2];
    compat_off_t    st_size;
    s32        st_pad3;
    old_time32_t    st_atime;
    s32        st_atime_nsec;
    old_time32_t    st_mtime;
    s32        st_mtime_nsec;
    old_time32_t    st_ctime;
    s32        st_ctime_nsec;
    s32        st_blksize;
    s32        st_blocks;
    s32        st_pad4[14];
};

#define __ARCH_COMPAT_FLOCK_EXTRA_SYSID        s32 l_sysid;
#define __ARCH_COMPAT_FLOCK_PAD            s32 pad[4];

struct compat_statfs {
    int        f_type;
    int        f_bsize;
    int        f_frsize;
    int        f_blocks;
    int        f_bfree;
    int        f_files;
    int        f_ffree;
    int        f_bavail;
    compat_fsid_t    f_fsid;
    int        f_namelen;
    int        f_flags;
    int        f_spare[5];
};

struct compat_ipc64_perm {
    compat_key_t key;
    __compat_uid32_t uid;
    __compat_gid32_t gid;
    __compat_uid32_t cuid;
    __compat_gid32_t cgid;
    compat_mode_t mode;
    unsigned short seq;
    unsigned short __pad2;
    compat_ulong_t __unused1;
    compat_ulong_t __unused2;
};

struct compat_semid64_ds {
    struct compat_ipc64_perm sem_perm;
    compat_ulong_t    sem_otime;
    compat_ulong_t    sem_ctime;
    compat_ulong_t    sem_nsems;
    compat_ulong_t    sem_otime_high;
    compat_ulong_t    sem_ctime_high;
};

struct compat_msqid64_ds {
    struct compat_ipc64_perm msg_perm;
#ifndef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_stime_high;
#endif
    compat_ulong_t    msg_stime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_stime_high;
#endif
#ifndef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_rtime_high;
#endif
    compat_ulong_t    msg_rtime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_rtime_high;
#endif
#ifndef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_ctime_high;
#endif
    compat_ulong_t    msg_ctime;
#ifdef CONFIG_CPU_LITTLE_ENDIAN
    compat_ulong_t    msg_ctime_high;
#endif
    compat_ulong_t    msg_cbytes;
    compat_ulong_t    msg_qnum;
    compat_ulong_t    msg_qbytes;
    compat_pid_t    msg_lspid;
    compat_pid_t    msg_lrpid;
    compat_ulong_t    __unused4;
    compat_ulong_t    __unused5;
};

struct compat_shmid64_ds {
    struct compat_ipc64_perm shm_perm;
    compat_size_t    shm_segsz;
    compat_ulong_t    shm_atime;
    compat_ulong_t    shm_dtime;
    compat_ulong_t    shm_ctime;
    compat_pid_t    shm_cpid;
    compat_pid_t    shm_lpid;
    compat_ulong_t    shm_nattch;
    compat_ushort_t    shm_atime_high;
    compat_ushort_t    shm_dtime_high;
    compat_ushort_t    shm_ctime_high;
    compat_ushort_t    __unused2;
};

/* MIPS has unusual order of fields in stack_t */
typedef struct compat_sigaltstack {
    compat_uptr_t            ss_sp;
    compat_size_t            ss_size;
    int                ss_flags;
} compat_stack_t;
#define compat_sigaltstack compat_sigaltstack

static inline int is_compat_task(void)
{
    return test_thread_flag(TIF_32BIT_ADDR);
}

#endif /* _ASM_COMPAT_H */