v4.19.13 snapshot.
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
new file mode 100644
index 0000000..78675f1
--- /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 */