--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_GENERIC_BITS_PER_LONG
+#define __ASM_GENERIC_BITS_PER_LONG
+
+#ifndef __BITS_PER_LONG
+/*
+ * In order to keep safe and avoid regression, only unify uapi
+ * bitsperlong.h for some archs which are using newer toolchains
+ * that have the definitions of __CHAR_BIT__ and __SIZEOF_LONG__.
+ * See the following link for more info:
+ * https://lore.kernel.org/linux-arch/b9624545-2c80-49a1-ac3c-39264a591f7b@app.fastmail.com/
+ */
+#if defined(__CHAR_BIT__) && defined(__SIZEOF_LONG__)
+#define __BITS_PER_LONG (__CHAR_BIT__ * __SIZEOF_LONG__)
+#else
+/*
+ * There seems to be no way of detecting this automatically from user
+ * space, so 64 bit architectures should override this in their
+ * bitsperlong.h. In particular, an architecture that supports
+ * both 32 and 64 bit user space must not rely on CONFIG_64BIT
+ * to decide it, but rather check a compiler provided macro.
+ */
+#define __BITS_PER_LONG 32
+#endif
+#endif
+
+#endif /* __ASM_GENERIC_BITS_PER_LONG */
--- /dev/null
+#ifndef __ASM_BYTEORDER_H
+#define __ASM_BYTEORDER_H
+
+#include <endian.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#include <linux/byteorder/little_endian.h>
+#else
+#include <linux/byteorder/big_endian.h>
+#endif
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_GENERIC_ERRNO_BASE_H
+#define _ASM_GENERIC_ERRNO_BASE_H
+
+#define EPERM 1 /* Operation not permitted */
+#define ENOENT 2 /* No such file or directory */
+#define ESRCH 3 /* No such process */
+#define EINTR 4 /* Interrupted system call */
+#define EIO 5 /* I/O error */
+#define ENXIO 6 /* No such device or address */
+#define E2BIG 7 /* Argument list too long */
+#define ENOEXEC 8 /* Exec format error */
+#define EBADF 9 /* Bad file number */
+#define ECHILD 10 /* No child processes */
+#define EAGAIN 11 /* Try again */
+#define ENOMEM 12 /* Out of memory */
+#define EACCES 13 /* Permission denied */
+#define EFAULT 14 /* Bad address */
+#define ENOTBLK 15 /* Block device required */
+#define EBUSY 16 /* Device or resource busy */
+#define EEXIST 17 /* File exists */
+#define EXDEV 18 /* Cross-device link */
+#define ENODEV 19 /* No such device */
+#define ENOTDIR 20 /* Not a directory */
+#define EISDIR 21 /* Is a directory */
+#define EINVAL 22 /* Invalid argument */
+#define ENFILE 23 /* File table overflow */
+#define EMFILE 24 /* Too many open files */
+#define ENOTTY 25 /* Not a typewriter */
+#define ETXTBSY 26 /* Text file busy */
+#define EFBIG 27 /* File too large */
+#define ENOSPC 28 /* No space left on device */
+#define ESPIPE 29 /* Illegal seek */
+#define EROFS 30 /* Read-only file system */
+#define EMLINK 31 /* Too many links */
+#define EPIPE 32 /* Broken pipe */
+#define EDOM 33 /* Math argument out of domain of func */
+#define ERANGE 34 /* Math result not representable */
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_GENERIC_ERRNO_H
+#define _ASM_GENERIC_ERRNO_H
+
+#include <asm/errno-base.h>
+
+#define EDEADLK 35 /* Resource deadlock would occur */
+#define ENAMETOOLONG 36 /* File name too long */
+#define ENOLCK 37 /* No record locks available */
+
+/*
+ * This error code is special: arch syscall entry code will return
+ * -ENOSYS if users try to call a syscall that doesn't exist. To keep
+ * failures of syscalls that really do exist distinguishable from
+ * failures due to attempts to use a nonexistent syscall, syscall
+ * implementations should refrain from returning -ENOSYS.
+ */
+#define ENOSYS 38 /* Invalid system call number */
+
+#define ENOTEMPTY 39 /* Directory not empty */
+#define ELOOP 40 /* Too many symbolic links encountered */
+#define EWOULDBLOCK EAGAIN /* Operation would block */
+#define ENOMSG 42 /* No message of desired type */
+#define EIDRM 43 /* Identifier removed */
+#define ECHRNG 44 /* Channel number out of range */
+#define EL2NSYNC 45 /* Level 2 not synchronized */
+#define EL3HLT 46 /* Level 3 halted */
+#define EL3RST 47 /* Level 3 reset */
+#define ELNRNG 48 /* Link number out of range */
+#define EUNATCH 49 /* Protocol driver not attached */
+#define ENOCSI 50 /* No CSI structure available */
+#define EL2HLT 51 /* Level 2 halted */
+#define EBADE 52 /* Invalid exchange */
+#define EBADR 53 /* Invalid request descriptor */
+#define EXFULL 54 /* Exchange full */
+#define ENOANO 55 /* No anode */
+#define EBADRQC 56 /* Invalid request code */
+#define EBADSLT 57 /* Invalid slot */
+
+#define EDEADLOCK EDEADLK
+
+#define EBFONT 59 /* Bad font file format */
+#define ENOSTR 60 /* Device not a stream */
+#define ENODATA 61 /* No data available */
+#define ETIME 62 /* Timer expired */
+#define ENOSR 63 /* Out of streams resources */
+#define ENONET 64 /* Machine is not on the network */
+#define ENOPKG 65 /* Package not installed */
+#define EREMOTE 66 /* Object is remote */
+#define ENOLINK 67 /* Link has been severed */
+#define EADV 68 /* Advertise error */
+#define ESRMNT 69 /* Srmount error */
+#define ECOMM 70 /* Communication error on send */
+#define EPROTO 71 /* Protocol error */
+#define EMULTIHOP 72 /* Multihop attempted */
+#define EDOTDOT 73 /* RFS specific error */
+#define EBADMSG 74 /* Not a data message */
+#define EOVERFLOW 75 /* Value too large for defined data type */
+#define ENOTUNIQ 76 /* Name not unique on network */
+#define EBADFD 77 /* File descriptor in bad state */
+#define EREMCHG 78 /* Remote address changed */
+#define ELIBACC 79 /* Can not access a needed shared library */
+#define ELIBBAD 80 /* Accessing a corrupted shared library */
+#define ELIBSCN 81 /* .lib section in a.out corrupted */
+#define ELIBMAX 82 /* Attempting to link in too many shared libraries */
+#define ELIBEXEC 83 /* Cannot exec a shared library directly */
+#define EILSEQ 84 /* Illegal byte sequence */
+#define ERESTART 85 /* Interrupted system call should be restarted */
+#define ESTRPIPE 86 /* Streams pipe error */
+#define EUSERS 87 /* Too many users */
+#define ENOTSOCK 88 /* Socket operation on non-socket */
+#define EDESTADDRREQ 89 /* Destination address required */
+#define EMSGSIZE 90 /* Message too long */
+#define EPROTOTYPE 91 /* Protocol wrong type for socket */
+#define ENOPROTOOPT 92 /* Protocol not available */
+#define EPROTONOSUPPORT 93 /* Protocol not supported */
+#define ESOCKTNOSUPPORT 94 /* Socket type not supported */
+#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
+#define EPFNOSUPPORT 96 /* Protocol family not supported */
+#define EAFNOSUPPORT 97 /* Address family not supported by protocol */
+#define EADDRINUSE 98 /* Address already in use */
+#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
+#define ENETDOWN 100 /* Network is down */
+#define ENETUNREACH 101 /* Network is unreachable */
+#define ENETRESET 102 /* Network dropped connection because of reset */
+#define ECONNABORTED 103 /* Software caused connection abort */
+#define ECONNRESET 104 /* Connection reset by peer */
+#define ENOBUFS 105 /* No buffer space available */
+#define EISCONN 106 /* Transport endpoint is already connected */
+#define ENOTCONN 107 /* Transport endpoint is not connected */
+#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
+#define ETOOMANYREFS 109 /* Too many references: cannot splice */
+#define ETIMEDOUT 110 /* Connection timed out */
+#define ECONNREFUSED 111 /* Connection refused */
+#define EHOSTDOWN 112 /* Host is down */
+#define EHOSTUNREACH 113 /* No route to host */
+#define EALREADY 114 /* Operation already in progress */
+#define EINPROGRESS 115 /* Operation now in progress */
+#define ESTALE 116 /* Stale file handle */
+#define EUCLEAN 117 /* Structure needs cleaning */
+#define ENOTNAM 118 /* Not a XENIX named type file */
+#define ENAVAIL 119 /* No XENIX semaphores available */
+#define EISNAM 120 /* Is a named type file */
+#define EREMOTEIO 121 /* Remote I/O error */
+#define EDQUOT 122 /* Quota exceeded */
+
+#define ENOMEDIUM 123 /* No medium found */
+#define EMEDIUMTYPE 124 /* Wrong medium type */
+#define ECANCELED 125 /* Operation Canceled */
+#define ENOKEY 126 /* Required key not available */
+#define EKEYEXPIRED 127 /* Key has expired */
+#define EKEYREVOKED 128 /* Key has been revoked */
+#define EKEYREJECTED 129 /* Key was rejected by service */
+
+/* for robust mutexes */
+#define EOWNERDEAD 130 /* Owner died */
+#define ENOTRECOVERABLE 131 /* State not recoverable */
+
+#define ERFKILL 132 /* Operation not possible due to RF-kill */
+
+#define EHWPOISON 133 /* Memory page has hardware error */
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_GENERIC_POSIX_TYPES_H
+#define __ASM_GENERIC_POSIX_TYPES_H
+
+#include <asm/bitsperlong.h>
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.
+ *
+ * First the types that are often defined in different ways across
+ * architectures, so that you can override them.
+ */
+
+#ifndef __kernel_long_t
+typedef long __kernel_long_t;
+typedef unsigned long __kernel_ulong_t;
+#endif
+
+#ifndef __kernel_ino_t
+typedef __kernel_ulong_t __kernel_ino_t;
+#endif
+
+#ifndef __kernel_mode_t
+typedef unsigned int __kernel_mode_t;
+#endif
+
+#ifndef __kernel_pid_t
+typedef int __kernel_pid_t;
+#endif
+
+#ifndef __kernel_ipc_pid_t
+typedef int __kernel_ipc_pid_t;
+#endif
+
+#ifndef __kernel_uid_t
+typedef unsigned int __kernel_uid_t;
+typedef unsigned int __kernel_gid_t;
+#endif
+
+#ifndef __kernel_suseconds_t
+typedef __kernel_long_t __kernel_suseconds_t;
+#endif
+
+#ifndef __kernel_daddr_t
+typedef int __kernel_daddr_t;
+#endif
+
+#ifndef __kernel_uid32_t
+typedef unsigned int __kernel_uid32_t;
+typedef unsigned int __kernel_gid32_t;
+#endif
+
+#ifndef __kernel_old_uid_t
+typedef __kernel_uid_t __kernel_old_uid_t;
+typedef __kernel_gid_t __kernel_old_gid_t;
+#endif
+
+#ifndef __kernel_old_dev_t
+typedef unsigned int __kernel_old_dev_t;
+#endif
+
+/*
+ * Most 32 bit architectures use "unsigned int" size_t,
+ * and all 64 bit architectures use "unsigned long" size_t.
+ */
+#ifndef __kernel_size_t
+#if __BITS_PER_LONG != 64
+typedef unsigned int __kernel_size_t;
+typedef int __kernel_ssize_t;
+typedef int __kernel_ptrdiff_t;
+#else
+typedef __kernel_ulong_t __kernel_size_t;
+typedef __kernel_long_t __kernel_ssize_t;
+typedef __kernel_long_t __kernel_ptrdiff_t;
+#endif
+#endif
+
+#ifndef __kernel_fsid_t
+typedef struct {
+ int val[2];
+} __kernel_fsid_t;
+#endif
+
+/*
+ * anything below here should be completely generic
+ */
+typedef __kernel_long_t __kernel_off_t;
+typedef long long __kernel_loff_t;
+typedef __kernel_long_t __kernel_old_time_t;
+typedef __kernel_long_t __kernel_time_t;
+typedef long long __kernel_time64_t;
+typedef __kernel_long_t __kernel_clock_t;
+typedef int __kernel_timer_t;
+typedef int __kernel_clockid_t;
+typedef char * __kernel_caddr_t;
+typedef unsigned short __kernel_uid16_t;
+typedef unsigned short __kernel_gid16_t;
+
+#endif /* __ASM_GENERIC_POSIX_TYPES_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_GENERIC_SWAB_H
+#define _ASM_GENERIC_SWAB_H
+
+#include <asm/bitsperlong.h>
+
+/*
+ * 32 bit architectures typically (but not always) want to
+ * set __SWAB_64_THRU_32__. In user space, this is only
+ * valid if the compiler supports 64 bit data types.
+ */
+
+#if __BITS_PER_LONG == 32
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#define __SWAB_64_THRU_32__
+#endif
+#endif
+
+#endif /* _ASM_GENERIC_SWAB_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_BYTEORDER_BIG_ENDIAN_H
+#define _LINUX_BYTEORDER_BIG_ENDIAN_H
+
+#ifndef __BIG_ENDIAN
+#define __BIG_ENDIAN 4321
+#endif
+#ifndef __BIG_ENDIAN_BITFIELD
+#define __BIG_ENDIAN_BITFIELD
+#endif
+
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <linux/swab.h>
+
+#define __constant_htonl(x) ((__be32)(__u32)(x))
+#define __constant_ntohl(x) ((__u32)(__be32)(x))
+#define __constant_htons(x) ((__be16)(__u16)(x))
+#define __constant_ntohs(x) ((__u16)(__be16)(x))
+#define __constant_cpu_to_le64(x) ((__le64)___constant_swab64((x)))
+#define __constant_le64_to_cpu(x) ___constant_swab64((__u64)(__le64)(x))
+#define __constant_cpu_to_le32(x) ((__le32)___constant_swab32((x)))
+#define __constant_le32_to_cpu(x) ___constant_swab32((__u32)(__le32)(x))
+#define __constant_cpu_to_le16(x) ((__le16)___constant_swab16((x)))
+#define __constant_le16_to_cpu(x) ___constant_swab16((__u16)(__le16)(x))
+#define __constant_cpu_to_be64(x) ((__be64)(__u64)(x))
+#define __constant_be64_to_cpu(x) ((__u64)(__be64)(x))
+#define __constant_cpu_to_be32(x) ((__be32)(__u32)(x))
+#define __constant_be32_to_cpu(x) ((__u32)(__be32)(x))
+#define __constant_cpu_to_be16(x) ((__be16)(__u16)(x))
+#define __constant_be16_to_cpu(x) ((__u16)(__be16)(x))
+#define __cpu_to_le64(x) ((__le64)__swab64((x)))
+#define __le64_to_cpu(x) __swab64((__u64)(__le64)(x))
+#define __cpu_to_le32(x) ((__le32)__swab32((x)))
+#define __le32_to_cpu(x) __swab32((__u32)(__le32)(x))
+#define __cpu_to_le16(x) ((__le16)__swab16((x)))
+#define __le16_to_cpu(x) __swab16((__u16)(__le16)(x))
+#define __cpu_to_be64(x) ((__be64)(__u64)(x))
+#define __be64_to_cpu(x) ((__u64)(__be64)(x))
+#define __cpu_to_be32(x) ((__be32)(__u32)(x))
+#define __be32_to_cpu(x) ((__u32)(__be32)(x))
+#define __cpu_to_be16(x) ((__be16)(__u16)(x))
+#define __be16_to_cpu(x) ((__u16)(__be16)(x))
+
+static __always_inline __le64 __cpu_to_le64p(const __u64 *p)
+{
+ return (__le64)__swab64p(p);
+}
+static __always_inline __u64 __le64_to_cpup(const __le64 *p)
+{
+ return __swab64p((__u64 *)p);
+}
+static __always_inline __le32 __cpu_to_le32p(const __u32 *p)
+{
+ return (__le32)__swab32p(p);
+}
+static __always_inline __u32 __le32_to_cpup(const __le32 *p)
+{
+ return __swab32p((__u32 *)p);
+}
+static __always_inline __le16 __cpu_to_le16p(const __u16 *p)
+{
+ return (__le16)__swab16p(p);
+}
+static __always_inline __u16 __le16_to_cpup(const __le16 *p)
+{
+ return __swab16p((__u16 *)p);
+}
+static __always_inline __be64 __cpu_to_be64p(const __u64 *p)
+{
+ return (__be64)*p;
+}
+static __always_inline __u64 __be64_to_cpup(const __be64 *p)
+{
+ return (__u64)*p;
+}
+static __always_inline __be32 __cpu_to_be32p(const __u32 *p)
+{
+ return (__be32)*p;
+}
+static __always_inline __u32 __be32_to_cpup(const __be32 *p)
+{
+ return (__u32)*p;
+}
+static __always_inline __be16 __cpu_to_be16p(const __u16 *p)
+{
+ return (__be16)*p;
+}
+static __always_inline __u16 __be16_to_cpup(const __be16 *p)
+{
+ return (__u16)*p;
+}
+#define __cpu_to_le64s(x) __swab64s((x))
+#define __le64_to_cpus(x) __swab64s((x))
+#define __cpu_to_le32s(x) __swab32s((x))
+#define __le32_to_cpus(x) __swab32s((x))
+#define __cpu_to_le16s(x) __swab16s((x))
+#define __le16_to_cpus(x) __swab16s((x))
+#define __cpu_to_be64s(x) do { (void)(x); } while (0)
+#define __be64_to_cpus(x) do { (void)(x); } while (0)
+#define __cpu_to_be32s(x) do { (void)(x); } while (0)
+#define __be32_to_cpus(x) do { (void)(x); } while (0)
+#define __cpu_to_be16s(x) do { (void)(x); } while (0)
+#define __be16_to_cpus(x) do { (void)(x); } while (0)
+
+
+#endif /* _LINUX_BYTEORDER_BIG_ENDIAN_H */
--- /dev/null
+#include <asm/errno.h>
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_BYTEORDER_LITTLE_ENDIAN_H
+#define _LINUX_BYTEORDER_LITTLE_ENDIAN_H
+
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN 1234
+#endif
+#ifndef __LITTLE_ENDIAN_BITFIELD
+#define __LITTLE_ENDIAN_BITFIELD
+#endif
+
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <linux/swab.h>
+
+#define __constant_htonl(x) ((__be32)___constant_swab32((x)))
+#define __constant_ntohl(x) ___constant_swab32((__be32)(x))
+#define __constant_htons(x) ((__be16)___constant_swab16((x)))
+#define __constant_ntohs(x) ___constant_swab16((__be16)(x))
+#define __constant_cpu_to_le64(x) ((__le64)(__u64)(x))
+#define __constant_le64_to_cpu(x) ((__u64)(__le64)(x))
+#define __constant_cpu_to_le32(x) ((__le32)(__u32)(x))
+#define __constant_le32_to_cpu(x) ((__u32)(__le32)(x))
+#define __constant_cpu_to_le16(x) ((__le16)(__u16)(x))
+#define __constant_le16_to_cpu(x) ((__u16)(__le16)(x))
+#define __constant_cpu_to_be64(x) ((__be64)___constant_swab64((x)))
+#define __constant_be64_to_cpu(x) ___constant_swab64((__u64)(__be64)(x))
+#define __constant_cpu_to_be32(x) ((__be32)___constant_swab32((x)))
+#define __constant_be32_to_cpu(x) ___constant_swab32((__u32)(__be32)(x))
+#define __constant_cpu_to_be16(x) ((__be16)___constant_swab16((x)))
+#define __constant_be16_to_cpu(x) ___constant_swab16((__u16)(__be16)(x))
+#define __cpu_to_le64(x) ((__le64)(__u64)(x))
+#define __le64_to_cpu(x) ((__u64)(__le64)(x))
+#define __cpu_to_le32(x) ((__le32)(__u32)(x))
+#define __le32_to_cpu(x) ((__u32)(__le32)(x))
+#define __cpu_to_le16(x) ((__le16)(__u16)(x))
+#define __le16_to_cpu(x) ((__u16)(__le16)(x))
+#define __cpu_to_be64(x) ((__be64)__swab64((x)))
+#define __be64_to_cpu(x) __swab64((__u64)(__be64)(x))
+#define __cpu_to_be32(x) ((__be32)__swab32((x)))
+#define __be32_to_cpu(x) __swab32((__u32)(__be32)(x))
+#define __cpu_to_be16(x) ((__be16)__swab16((x)))
+#define __be16_to_cpu(x) __swab16((__u16)(__be16)(x))
+
+static __always_inline __le64 __cpu_to_le64p(const __u64 *p)
+{
+ return (__le64)*p;
+}
+static __always_inline __u64 __le64_to_cpup(const __le64 *p)
+{
+ return (__u64)*p;
+}
+static __always_inline __le32 __cpu_to_le32p(const __u32 *p)
+{
+ return (__le32)*p;
+}
+static __always_inline __u32 __le32_to_cpup(const __le32 *p)
+{
+ return (__u32)*p;
+}
+static __always_inline __le16 __cpu_to_le16p(const __u16 *p)
+{
+ return (__le16)*p;
+}
+static __always_inline __u16 __le16_to_cpup(const __le16 *p)
+{
+ return (__u16)*p;
+}
+static __always_inline __be64 __cpu_to_be64p(const __u64 *p)
+{
+ return (__be64)__swab64p(p);
+}
+static __always_inline __u64 __be64_to_cpup(const __be64 *p)
+{
+ return __swab64p((__u64 *)p);
+}
+static __always_inline __be32 __cpu_to_be32p(const __u32 *p)
+{
+ return (__be32)__swab32p(p);
+}
+static __always_inline __u32 __be32_to_cpup(const __be32 *p)
+{
+ return __swab32p((__u32 *)p);
+}
+static __always_inline __be16 __cpu_to_be16p(const __u16 *p)
+{
+ return (__be16)__swab16p(p);
+}
+static __always_inline __u16 __be16_to_cpup(const __be16 *p)
+{
+ return __swab16p((__u16 *)p);
+}
+#define __cpu_to_le64s(x) do { (void)(x); } while (0)
+#define __le64_to_cpus(x) do { (void)(x); } while (0)
+#define __cpu_to_le32s(x) do { (void)(x); } while (0)
+#define __le32_to_cpus(x) do { (void)(x); } while (0)
+#define __cpu_to_le16s(x) do { (void)(x); } while (0)
+#define __le16_to_cpus(x) do { (void)(x); } while (0)
+#define __cpu_to_be64s(x) __swab64s((x))
+#define __be64_to_cpus(x) __swab64s((x))
+#define __cpu_to_be32s(x) __swab32s((x))
+#define __be32_to_cpus(x) __swab32s((x))
+#define __cpu_to_be16s(x) __swab16s((x))
+#define __be16_to_cpus(x) __swab16s((x))
+
+
+#endif /* _LINUX_BYTEORDER_LITTLE_ENDIAN_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_LINUX_STDDEF_H
+#define _UAPI_LINUX_STDDEF_H
+
+#ifndef __always_inline
+#define __always_inline inline
+#endif
+
+/**
+ * __struct_group() - Create a mirrored named and anonyomous struct
+ *
+ * @TAG: The tag name for the named sub-struct (usually empty)
+ * @NAME: The identifier name of the mirrored sub-struct
+ * @ATTRS: Any struct attributes (usually empty)
+ * @MEMBERS: The member declarations for the mirrored structs
+ *
+ * Used to create an anonymous union of two structs with identical layout
+ * and size: one anonymous and one named. The former's members can be used
+ * normally without sub-struct naming, and the latter can be used to
+ * reason about the start, end, and size of the group of struct members.
+ * The named struct can also be explicitly tagged for layer reuse, as well
+ * as both having struct attributes appended.
+ */
+#define __struct_group(TAG, NAME, ATTRS, MEMBERS...) \
+ union { \
+ struct { MEMBERS } ATTRS; \
+ struct TAG { MEMBERS } ATTRS NAME; \
+ } ATTRS
+
+#ifdef __cplusplus
+/* sizeof(struct{}) is 1 in C++, not 0, can't use C version of the macro. */
+#define __DECLARE_FLEX_ARRAY(T, member) \
+ T member[0]
+#else
+/**
+ * __DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
+ *
+ * @TYPE: The type of each flexible array element
+ * @NAME: The name of the flexible array member
+ *
+ * In order to have a flexible array member in a union or alone in a
+ * struct, it needs to be wrapped in an anonymous struct with at least 1
+ * named member, but that member can be empty.
+ */
+#define __DECLARE_FLEX_ARRAY(TYPE, NAME) \
+ struct { \
+ struct { } __empty_ ## NAME; \
+ TYPE NAME[]; \
+ }
+#endif
+
+#ifndef __counted_by
+#define __counted_by(m)
+#endif
+
+#endif /* _UAPI_LINUX_STDDEF_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_SWAB_H
+#define _LINUX_SWAB_H
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <asm/bitsperlong.h>
+#include <asm/swab.h>
+
+/*
+ * casts are necessary for constants, because we never know how for sure
+ * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way.
+ */
+#define ___constant_swab16(x) ((__u16)( \
+ (((__u16)(x) & (__u16)0x00ffU) << 8) | \
+ (((__u16)(x) & (__u16)0xff00U) >> 8)))
+
+#define ___constant_swab32(x) ((__u32)( \
+ (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
+ (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
+ (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
+ (((__u32)(x) & (__u32)0xff000000UL) >> 24)))
+
+#define ___constant_swab64(x) ((__u64)( \
+ (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \
+ (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \
+ (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \
+ (((__u64)(x) & (__u64)0x00000000ff000000ULL) << 8) | \
+ (((__u64)(x) & (__u64)0x000000ff00000000ULL) >> 8) | \
+ (((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \
+ (((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \
+ (((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56)))
+
+#define ___constant_swahw32(x) ((__u32)( \
+ (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | \
+ (((__u32)(x) & (__u32)0xffff0000UL) >> 16)))
+
+#define ___constant_swahb32(x) ((__u32)( \
+ (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | \
+ (((__u32)(x) & (__u32)0xff00ff00UL) >> 8)))
+
+/*
+ * Implement the following as inlines, but define the interface using
+ * macros to allow constant folding when possible:
+ * ___swab16, ___swab32, ___swab64, ___swahw32, ___swahb32
+ */
+
+static __inline__ __u16 __fswab16(__u16 val)
+{
+#if defined (__arch_swab16)
+ return __arch_swab16(val);
+#else
+ return ___constant_swab16(val);
+#endif
+}
+
+static __inline__ __u32 __fswab32(__u32 val)
+{
+#if defined(__arch_swab32)
+ return __arch_swab32(val);
+#else
+ return ___constant_swab32(val);
+#endif
+}
+
+static __inline__ __u64 __fswab64(__u64 val)
+{
+#if defined (__arch_swab64)
+ return __arch_swab64(val);
+#elif defined(__SWAB_64_THRU_32__)
+ __u32 h = val >> 32;
+ __u32 l = val & ((1ULL << 32) - 1);
+ return (((__u64)__fswab32(l)) << 32) | ((__u64)(__fswab32(h)));
+#else
+ return ___constant_swab64(val);
+#endif
+}
+
+static __inline__ __u32 __fswahw32(__u32 val)
+{
+#ifdef __arch_swahw32
+ return __arch_swahw32(val);
+#else
+ return ___constant_swahw32(val);
+#endif
+}
+
+static __inline__ __u32 __fswahb32(__u32 val)
+{
+#ifdef __arch_swahb32
+ return __arch_swahb32(val);
+#else
+ return ___constant_swahb32(val);
+#endif
+}
+
+/**
+ * __swab16 - return a byteswapped 16-bit value
+ * @x: value to byteswap
+ */
+#ifdef __HAVE_BUILTIN_BSWAP16__
+#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
+#else
+#define __swab16(x) \
+ (__u16)(__builtin_constant_p(x) ? \
+ ___constant_swab16(x) : \
+ __fswab16(x))
+#endif
+
+/**
+ * __swab32 - return a byteswapped 32-bit value
+ * @x: value to byteswap
+ */
+#ifdef __HAVE_BUILTIN_BSWAP32__
+#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
+#else
+#define __swab32(x) \
+ (__u32)(__builtin_constant_p(x) ? \
+ ___constant_swab32(x) : \
+ __fswab32(x))
+#endif
+
+/**
+ * __swab64 - return a byteswapped 64-bit value
+ * @x: value to byteswap
+ */
+#ifdef __HAVE_BUILTIN_BSWAP64__
+#define __swab64(x) (__u64)__builtin_bswap64((__u64)(x))
+#else
+#define __swab64(x) \
+ (__u64)(__builtin_constant_p(x) ? \
+ ___constant_swab64(x) : \
+ __fswab64(x))
+#endif
+
+static __always_inline unsigned long __swab(const unsigned long y)
+{
+#if __BITS_PER_LONG == 64
+ return __swab64(y);
+#else /* __BITS_PER_LONG == 32 */
+ return __swab32(y);
+#endif
+}
+
+/**
+ * __swahw32 - return a word-swapped 32-bit value
+ * @x: value to wordswap
+ *
+ * __swahw32(0x12340000) is 0x00001234
+ */
+#define __swahw32(x) \
+ (__builtin_constant_p((__u32)(x)) ? \
+ ___constant_swahw32(x) : \
+ __fswahw32(x))
+
+/**
+ * __swahb32 - return a high and low byte-swapped 32-bit value
+ * @x: value to byteswap
+ *
+ * __swahb32(0x12345678) is 0x34127856
+ */
+#define __swahb32(x) \
+ (__builtin_constant_p((__u32)(x)) ? \
+ ___constant_swahb32(x) : \
+ __fswahb32(x))
+
+/**
+ * __swab16p - return a byteswapped 16-bit value from a pointer
+ * @p: pointer to a naturally-aligned 16-bit value
+ */
+static __always_inline __u16 __swab16p(const __u16 *p)
+{
+#ifdef __arch_swab16p
+ return __arch_swab16p(p);
+#else
+ return __swab16(*p);
+#endif
+}
+
+/**
+ * __swab32p - return a byteswapped 32-bit value from a pointer
+ * @p: pointer to a naturally-aligned 32-bit value
+ */
+static __always_inline __u32 __swab32p(const __u32 *p)
+{
+#ifdef __arch_swab32p
+ return __arch_swab32p(p);
+#else
+ return __swab32(*p);
+#endif
+}
+
+/**
+ * __swab64p - return a byteswapped 64-bit value from a pointer
+ * @p: pointer to a naturally-aligned 64-bit value
+ */
+static __always_inline __u64 __swab64p(const __u64 *p)
+{
+#ifdef __arch_swab64p
+ return __arch_swab64p(p);
+#else
+ return __swab64(*p);
+#endif
+}
+
+/**
+ * __swahw32p - return a wordswapped 32-bit value from a pointer
+ * @p: pointer to a naturally-aligned 32-bit value
+ *
+ * See __swahw32() for details of wordswapping.
+ */
+static __inline__ __u32 __swahw32p(const __u32 *p)
+{
+#ifdef __arch_swahw32p
+ return __arch_swahw32p(p);
+#else
+ return __swahw32(*p);
+#endif
+}
+
+/**
+ * __swahb32p - return a high and low byteswapped 32-bit value from a pointer
+ * @p: pointer to a naturally-aligned 32-bit value
+ *
+ * See __swahb32() for details of high/low byteswapping.
+ */
+static __inline__ __u32 __swahb32p(const __u32 *p)
+{
+#ifdef __arch_swahb32p
+ return __arch_swahb32p(p);
+#else
+ return __swahb32(*p);
+#endif
+}
+
+/**
+ * __swab16s - byteswap a 16-bit value in-place
+ * @p: pointer to a naturally-aligned 16-bit value
+ */
+static __inline__ void __swab16s(__u16 *p)
+{
+#ifdef __arch_swab16s
+ __arch_swab16s(p);
+#else
+ *p = __swab16p(p);
+#endif
+}
+/**
+ * __swab32s - byteswap a 32-bit value in-place
+ * @p: pointer to a naturally-aligned 32-bit value
+ */
+static __always_inline void __swab32s(__u32 *p)
+{
+#ifdef __arch_swab32s
+ __arch_swab32s(p);
+#else
+ *p = __swab32p(p);
+#endif
+}
+
+/**
+ * __swab64s - byteswap a 64-bit value in-place
+ * @p: pointer to a naturally-aligned 64-bit value
+ */
+static __always_inline void __swab64s(__u64 *p)
+{
+#ifdef __arch_swab64s
+ __arch_swab64s(p);
+#else
+ *p = __swab64p(p);
+#endif
+}
+
+/**
+ * __swahw32s - wordswap a 32-bit value in-place
+ * @p: pointer to a naturally-aligned 32-bit value
+ *
+ * See __swahw32() for details of wordswapping
+ */
+static __inline__ void __swahw32s(__u32 *p)
+{
+#ifdef __arch_swahw32s
+ __arch_swahw32s(p);
+#else
+ *p = __swahw32p(p);
+#endif
+}
+
+/**
+ * __swahb32s - high and low byteswap a 32-bit value in-place
+ * @p: pointer to a naturally-aligned 32-bit value
+ *
+ * See __swahb32() for details of high and low byte swapping
+ */
+static __inline__ void __swahb32s(__u32 *p)
+{
+#ifdef __arch_swahb32s
+ __arch_swahb32s(p);
+#else
+ *p = __swahb32p(p);
+#endif
+}
+
+
+#endif /* _LINUX_SWAB_H */
projects / openwrt / staging / nbd.git / commitdiff