diff options
Diffstat (limited to 'arch/mips/include/asm/compat.h')
| -rw-r--r-- | arch/mips/include/asm/compat.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h new file mode 100644 index 000000000..78675f194 --- /dev/null +++ b/arch/mips/include/asm/compat.h @@ -0,0 +1,229 @@ +/* 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_USER_HZ 100 +#define COMPAT_UTS_MACHINE "mips\0\0\0" + +typedef u32 compat_size_t; +typedef s32 compat_ssize_t; +typedef s32 compat_clock_t; +typedef s32 compat_suseconds_t; + +typedef s32 compat_pid_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; +typedef u32 compat_mode_t; +typedef u32 compat_ino_t; +typedef u32 compat_dev_t; +typedef s32 compat_off_t; +typedef s64 compat_loff_t; +typedef u32 compat_nlink_t; +typedef s32 compat_ipc_pid_t; +typedef s32 compat_daddr_t; +typedef s32 compat_caddr_t; +typedef struct { + s32 val[2]; +} compat_fsid_t; +typedef s32 compat_timer_t; +typedef s32 compat_key_t; + +typedef s16 compat_short_t; +typedef s32 compat_int_t; +typedef s32 compat_long_t; +typedef s64 compat_s64; +typedef u16 compat_ushort_t; +typedef u32 compat_uint_t; +typedef u32 compat_ulong_t; +typedef u64 compat_u64; +typedef u32 compat_uptr_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; + compat_time_t st_atime; + s32 st_atime_nsec; + compat_time_t st_mtime; + s32 st_mtime_nsec; + compat_time_t st_ctime; + s32 st_ctime_nsec; + s32 st_blksize; + s32 st_blocks; + s32 st_pad4[14]; +}; + +struct compat_flock { + short l_type; + short l_whence; + compat_off_t l_start; + compat_off_t l_len; + s32 l_sysid; + compat_pid_t l_pid; + s32 pad[4]; +}; + +#define F_GETLK64 33 +#define F_SETLK64 34 +#define F_SETLKW64 35 + +struct compat_flock64 { + short l_type; + short l_whence; + compat_loff_t l_start; + compat_loff_t l_len; + compat_pid_t l_pid; +}; + +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]; +}; + +#define COMPAT_RLIM_INFINITY 0x7fffffffUL + +typedef u32 compat_old_sigset_t; /* at least 32 bits */ + +#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ +#define _COMPAT_NSIG_BPW 32 + +typedef u32 compat_sigset_word; + +#define COMPAT_OFF_T_MAX 0x7fffffff + +/* + * A pointer passed in from user mode. This should not + * be used for syscall parameters, just declare them + * as pointers because the syscall entry code will have + * appropriately converted them already. + */ + +static inline void __user *compat_ptr(compat_uptr_t uptr) +{ + /* cast to a __user pointer via "unsigned long" makes sparse happy */ + return (void __user *)(unsigned long)(long)uptr; +} + +static inline compat_uptr_t ptr_to_compat(void __user *uptr) +{ + return (u32)(unsigned long)uptr; +} + +static inline void __user *arch_compat_alloc_user_space(long len) +{ + struct pt_regs *regs = (struct pt_regs *) + ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; + + return (void __user *) (regs->regs[29] - len); +} + +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 */ |