1 /* 2 * ntfsendian.h 3 * 4 * Copyright (C) 1998, 1999 Martin von L�wis 5 * Copyright (C) 1998 Joseph Malicki 6 * Copyright (C) 1999 Werner Seiler 7 * Copyright (C) 2001 Anton Altaparmakov (AIA) 8 */ 9 #include <asm/byteorder.h> 10 11 #define CPU_TO_LE16(a) __cpu_to_le16(a) 12 #define CPU_TO_LE32(a) __cpu_to_le32(a) 13 #define CPU_TO_LE64(a) __cpu_to_le64(a) 14 15 #define LE16_TO_CPU(a) __cpu_to_le16(a) 16 #define LE32_TO_CPU(a) __cpu_to_le32(a) 17 #define LE64_TO_CPU(a) __cpu_to_le64(a) 18 19 #define NTFS_GETU8(p) (*(ntfs_u8*)(p)) 20 #define NTFS_GETU16(p) ((ntfs_u16)LE16_TO_CPU(*(ntfs_u16*)(p))) 21 #define NTFS_GETU24(p) ((ntfs_u32)NTFS_GETU16(p) | \ 22 ((ntfs_u32)NTFS_GETU8(((char*)(p)) + 2) << 16)) 23 #define NTFS_GETU32(p) ((ntfs_u32)LE32_TO_CPU(*(ntfs_u32*)(p))) 24 #define NTFS_GETU40(p) ((ntfs_u64)NTFS_GETU32(p) | \ 25 (((ntfs_u64)NTFS_GETU8(((char*)(p)) + 4)) << 32)) 26 #define NTFS_GETU48(p) ((ntfs_u64)NTFS_GETU32(p) | \ 27 (((ntfs_u64)NTFS_GETU16(((char*)(p)) + 4)) << 32)) 28 #define NTFS_GETU56(p) ((ntfs_u64)NTFS_GETU32(p) | \ 29 (((ntfs_u64)NTFS_GETU24(((char*)(p)) + 4)) << 32)) 30 #define NTFS_GETU64(p) ((ntfs_u64)LE64_TO_CPU(*(ntfs_u64*)(p))) 31 32 /* Macros writing unsigned integers */ 33 #define NTFS_PUTU8(p,v) ((*(ntfs_u8*)(p)) = (v)) 34 #define NTFS_PUTU16(p,v) ((*(ntfs_u16*)(p)) = CPU_TO_LE16(v)) 35 #define NTFS_PUTU24(p,v) NTFS_PUTU16(p, (v) & 0xFFFF);\ 36 NTFS_PUTU8(((char*)(p)) + 2, (v) >> 16) 37 #define NTFS_PUTU32(p,v) ((*(ntfs_u32*)(p)) = CPU_TO_LE32(v)) 38 #define NTFS_PUTU64(p,v) ((*(ntfs_u64*)(p)) = CPU_TO_LE64(v)) 39 40 /* Macros reading signed integers */ 41 #define NTFS_GETS8(p) ((*(ntfs_s8*)(p))) 42 #define NTFS_GETS16(p) ((ntfs_s16)LE16_TO_CPU(*(short*)(p))) 43 #define NTFS_GETS24(p) (NTFS_GETU24(p) < 0x800000 ? \ 44 (int)NTFS_GETU24(p) : \ 45 (int)(NTFS_GETU24(p) - 0x1000000)) 46 #define NTFS_GETS32(p) ((ntfs_s32)LE32_TO_CPU(*(int*)(p))) 47 #define NTFS_GETS40(p) (((ntfs_s64)NTFS_GETU32(p)) | \ 48 (((ntfs_s64)NTFS_GETS8(((char*)(p)) + 4)) << 32)) 49 #define NTFS_GETS48(p) (((ntfs_s64)NTFS_GETU32(p)) | \ 50 (((ntfs_s64)NTFS_GETS16(((char*)(p)) + 4)) << 32)) 51 #define NTFS_GETS56(p) (((ntfs_s64)NTFS_GETU32(p)) | \ 52 (((ntfs_s64)NTFS_GETS24(((char*)(p)) + 4)) << 32)) 53 #define NTFS_GETS64(p) ((ntfs_s64)NTFS_GETU64(p)) 54 55 #define NTFS_PUTS8(p,v) NTFS_PUTU8(p,v) 56 #define NTFS_PUTS16(p,v) NTFS_PUTU16(p,v) 57 #define NTFS_PUTS24(p,v) NTFS_PUTU24(p,v) 58 #define NTFS_PUTS32(p,v) NTFS_PUTU32(p,v) 59 #define NTFS_PUTS64(p,v) NTFS_PUTU64(p,v) 60 61