patch-2.2.0-pre4 linux/fs/ntfs/ntfsendian.h

• Lines: 87
• Date: Sat Jan 2 10:24:46 1999
• Orig file: v2.2.0-pre3/linux/fs/ntfs/ntfsendian.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.0-pre3/linux/fs/ntfs/ntfsendian.h linux/fs/ntfs/ntfsendian.h
@@ -0,0 +1,86 @@
+/*
+ *  ntfsendian.h
+ *
+ *  Copyright (C) 1998 Martin von Löwis
+ *  Copyright (C) 1998 Joseph Malicki
+ */
+
+#ifdef __linux__
+/* This defines __cpu_to_le16 on Linux 2.1 and higher. */
+#include <asm/byteorder.h>
+#endif
+
+#ifdef __cpu_to_le16
+#define CPU_TO_LE16(a) __cpu_to_le16(a)
+#define CPU_TO_LE32(a) __cpu_to_le32(a)
+#define CPU_TO_LE64(a) __cpu_to_le64(a)
+
+#define LE16_TO_CPU(a) __cpu_to_le16(a)
+#define LE32_TO_CPU(a) __cpu_to_le32(a)
+#define LE64_TO_CPU(a) __cpu_to_le64(a)
+
+#else
+
+#ifdef __LITTLE_ENDIAN
+
+#define CPU_TO_LE16(a) (a)
+#define CPU_TO_LE32(a) (a)
+#define CPU_TO_LE64(a) (a)
+#define LE16_TO_CPU(a) (a)
+#define LE32_TO_CPU(a) (a)
+#define LE64_TO_CPU(a) (a)
+
+#else
+
+/* Routines for big-endian machines */
+#ifdef __BIG_ENDIAN
+
+/* We hope its big-endian, not PDP-endian :) */
+#define CPU_TO_LE16(a) ((((a)&0xF) << 8)|((a) >> 8))
+#define CPU_TO_LE32(a) ((((a) & 0xF) << 24) | (((a) & 0xF0) << 8) | \
+			(((a) & 0xF00) >> 8) | ((a) >> 24))
+#define CPU_TO_LE64(a) ((CPU_TO_LE32(a)<<32)|CPU_TO_LE32((a)>>32)
+
+#define LE16_TO_CPU(a) CPU_TO_LE16(a)
+#define LE32_TO_CPU(a) CPU_TO_LE32(a)
+#define LE64_TO_CPU(a) CPU_TO_LE64(a)
+
+#else
+
+#error Please define Endianness - __BIG_ENDIAN or __LITTLE_ENDIAN or add OS-specific macros
+
+#endif /* __BIG_ENDIAN */
+#endif /* __LITTLE_ENDIAN */
+#endif /* __cpu_to_le16 */
+
+#define NTFS_GETU8(p)      (*(ntfs_u8*)(p))
+#define NTFS_GETU16(p)     ((ntfs_u16)LE16_TO_CPU(*(ntfs_u16*)(p)))
+#define NTFS_GETU24(p)     (NTFS_GETU32(p) & 0xFFFFFF)
+#define NTFS_GETU32(p)     ((ntfs_u32)LE32_TO_CPU(*(ntfs_u32*)(p)))
+#define NTFS_GETU40(p)     ((ntfs_u64)NTFS_GETU32(p)|(((ntfs_u64)NTFS_GETU8(((char*)(p))+4))<<32))
+#define NTFS_GETU48(p)     ((ntfs_u64)NTFS_GETU32(p)|(((ntfs_u64)NTFS_GETU16(((char*)(p))+4))<<32))
+#define NTFS_GETU56(p)     ((ntfs_u64)NTFS_GETU32(p)|(((ntfs_u64)NTFS_GETU24(((char*)(p))+4))<<32))
+#define NTFS_GETU64(p)     ((ntfs_u64)LE64_TO_CPU(*(ntfs_u64*)(p)))
+ 
+ /* Macros writing unsigned integers */
+#define NTFS_PUTU8(p,v)      ((*(ntfs_u8*)(p))=(v))
+#define NTFS_PUTU16(p,v)     ((*(ntfs_u16*)(p))=CPU_TO_LE16(v))
+#define NTFS_PUTU24(p,v)     NTFS_PUTU16(p,(v) & 0xFFFF);\
+                             NTFS_PUTU8(((char*)(p))+2,(v)>>16)
+#define NTFS_PUTU32(p,v)     ((*(ntfs_u32*)(p))=CPU_TO_LE32(v))
+#define NTFS_PUTU64(p,v)     ((*(ntfs_u64*)(p))=CPU_TO_LE64(v))
+ 
+ /* Macros reading signed integers */
+#define NTFS_GETS8(p)        ((*(ntfs_u8*)(p)))
+#define NTFS_GETS16(p)       ((ntfs_s16)LE16_TO_CPU(*(short*)(p)))
+#define NTFS_GETS24(p)       (NTFS_GETU24(p) < 0x800000 ? (int)NTFS_GETU24(p) : (int)(NTFS_GETU24(p) - 0x1000000))
+#define NTFS_GETS32(p)       ((ntfs_s32)LE32_TO_CPU(*(int*)(p)))
+#define NTFS_GETS40(p)       (((ntfs_s64)NTFS_GETS32(p)) | (((ntfs_s64)NTFS_GETS8(((char*)(p))+4)) << 32))
+#define NTFS_GETS48(p)       (((ntfs_s64)NTFS_GETS32(p)) | (((ntfs_s64)NTFS_GETS16(((char*)(p))+4)) << 32))
+#define NTFS_GETS56(p)       (((ntfs_s64)NTFS_GETS32(p)) | (((ntfs_s64)NTFS_GETS24(((char*)(p))+4)) << 32))
+#define NTFS_GETS64(p)	     ((ntfs_s64)NTFS_GETU64(p))
+ 
+#define NTFS_PUTS8(p,v)      NTFS_PUTU8(p,v)
+#define NTFS_PUTS16(p,v)     NTFS_PUTU16(p,v)
+#define NTFS_PUTS24(p,v)     NTFS_PUTU24(p,v)
+#define NTFS_PUTS32(p,v)     NTFS_PUTU32(p,v)