/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_COMPAT_H
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#define _ASM_COMPAT_H
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/*
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* Architecture specific compatibility types
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*/
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#include <linux/thread_info.h>
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#include <linux/types.h>
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#include <asm/page.h>
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#include <asm/ptrace.h>
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#define COMPAT_USER_HZ 100
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#define COMPAT_UTS_MACHINE "mips\0\0\0"
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typedef u32 compat_size_t;
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typedef s32 compat_ssize_t;
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typedef s32 compat_clock_t;
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typedef s32 compat_suseconds_t;
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typedef s32 compat_pid_t;
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typedef s32 __compat_uid_t;
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typedef s32 __compat_gid_t;
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typedef __compat_uid_t __compat_uid32_t;
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typedef __compat_gid_t __compat_gid32_t;
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typedef u32 compat_mode_t;
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typedef u32 compat_ino_t;
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typedef u32 compat_dev_t;
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typedef s32 compat_off_t;
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typedef s64 compat_loff_t;
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typedef u32 compat_nlink_t;
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typedef s32 compat_ipc_pid_t;
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typedef s32 compat_daddr_t;
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typedef s32 compat_caddr_t;
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typedef struct {
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s32 val[2];
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} compat_fsid_t;
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typedef s32 compat_timer_t;
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typedef s32 compat_key_t;
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typedef s16 compat_short_t;
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typedef s32 compat_int_t;
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typedef s32 compat_long_t;
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typedef s64 compat_s64;
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typedef u16 compat_ushort_t;
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typedef u32 compat_uint_t;
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typedef u32 compat_ulong_t;
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typedef u64 compat_u64;
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typedef u32 compat_uptr_t;
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struct compat_stat {
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compat_dev_t st_dev;
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s32 st_pad1[3];
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compat_ino_t st_ino;
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compat_mode_t st_mode;
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compat_nlink_t st_nlink;
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__compat_uid_t st_uid;
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__compat_gid_t st_gid;
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compat_dev_t st_rdev;
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s32 st_pad2[2];
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compat_off_t st_size;
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s32 st_pad3;
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compat_time_t st_atime;
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s32 st_atime_nsec;
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compat_time_t st_mtime;
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s32 st_mtime_nsec;
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compat_time_t st_ctime;
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s32 st_ctime_nsec;
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s32 st_blksize;
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s32 st_blocks;
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s32 st_pad4[14];
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};
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struct compat_flock {
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short l_type;
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short l_whence;
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compat_off_t l_start;
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compat_off_t l_len;
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s32 l_sysid;
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compat_pid_t l_pid;
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s32 pad[4];
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};
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#define F_GETLK64 33
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#define F_SETLK64 34
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#define F_SETLKW64 35
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struct compat_flock64 {
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short l_type;
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short l_whence;
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compat_loff_t l_start;
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compat_loff_t l_len;
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compat_pid_t l_pid;
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};
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struct compat_statfs {
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int f_type;
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int f_bsize;
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int f_frsize;
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int f_blocks;
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int f_bfree;
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int f_files;
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int f_ffree;
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int f_bavail;
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compat_fsid_t f_fsid;
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int f_namelen;
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int f_flags;
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int f_spare[5];
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};
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#define COMPAT_RLIM_INFINITY 0x7fffffffUL
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typedef u32 compat_old_sigset_t; /* at least 32 bits */
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#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
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#define _COMPAT_NSIG_BPW 32
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typedef u32 compat_sigset_word;
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#define COMPAT_OFF_T_MAX 0x7fffffff
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/*
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* A pointer passed in from user mode. This should not
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* be used for syscall parameters, just declare them
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* as pointers because the syscall entry code will have
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* appropriately converted them already.
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*/
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static inline void __user *compat_ptr(compat_uptr_t uptr)
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{
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/* cast to a __user pointer via "unsigned long" makes sparse happy */
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return (void __user *)(unsigned long)(long)uptr;
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}
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static inline compat_uptr_t ptr_to_compat(void __user *uptr)
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{
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return (u32)(unsigned long)uptr;
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}
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static inline void __user *arch_compat_alloc_user_space(long len)
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{
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struct pt_regs *regs = (struct pt_regs *)
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((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
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return (void __user *) (regs->regs[29] - len);
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}
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struct compat_ipc64_perm {
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compat_key_t key;
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__compat_uid32_t uid;
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__compat_gid32_t gid;
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__compat_uid32_t cuid;
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__compat_gid32_t cgid;
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compat_mode_t mode;
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unsigned short seq;
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unsigned short __pad2;
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compat_ulong_t __unused1;
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compat_ulong_t __unused2;
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};
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struct compat_semid64_ds {
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struct compat_ipc64_perm sem_perm;
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compat_ulong_t sem_otime;
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compat_ulong_t sem_ctime;
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compat_ulong_t sem_nsems;
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compat_ulong_t sem_otime_high;
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compat_ulong_t sem_ctime_high;
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};
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struct compat_msqid64_ds {
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struct compat_ipc64_perm msg_perm;
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_stime_high;
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#endif
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compat_ulong_t msg_stime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_stime_high;
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#endif
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_rtime_high;
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#endif
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compat_ulong_t msg_rtime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_rtime_high;
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#endif
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#ifndef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_ctime_high;
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#endif
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compat_ulong_t msg_ctime;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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compat_ulong_t msg_ctime_high;
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#endif
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compat_ulong_t msg_cbytes;
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compat_ulong_t msg_qnum;
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compat_ulong_t msg_qbytes;
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compat_pid_t msg_lspid;
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compat_pid_t msg_lrpid;
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compat_ulong_t __unused4;
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compat_ulong_t __unused5;
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};
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struct compat_shmid64_ds {
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struct compat_ipc64_perm shm_perm;
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compat_size_t shm_segsz;
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compat_ulong_t shm_atime;
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compat_ulong_t shm_dtime;
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compat_ulong_t shm_ctime;
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compat_pid_t shm_cpid;
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compat_pid_t shm_lpid;
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compat_ulong_t shm_nattch;
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compat_ushort_t shm_atime_high;
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compat_ushort_t shm_dtime_high;
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compat_ushort_t shm_ctime_high;
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compat_ushort_t __unused2;
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};
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/* MIPS has unusual order of fields in stack_t */
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typedef struct compat_sigaltstack {
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compat_uptr_t ss_sp;
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compat_size_t ss_size;
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int ss_flags;
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} compat_stack_t;
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#define compat_sigaltstack compat_sigaltstack
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static inline int is_compat_task(void)
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{
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return test_thread_flag(TIF_32BIT_ADDR);
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}
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#endif /* _ASM_COMPAT_H */
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