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1275 |
phoenix |
/*
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* ntfsendian.h
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*
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* Copyright (C) 1998, 1999 Martin von Löwis
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* Copyright (C) 1998 Joseph Malicki
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* Copyright (C) 1999 Werner Seiler
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* Copyright (C) 2001 Anton Altaparmakov (AIA)
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*/
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#include <asm/byteorder.h>
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#define CPU_TO_LE16(a) __cpu_to_le16(a)
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#define CPU_TO_LE32(a) __cpu_to_le32(a)
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#define CPU_TO_LE64(a) __cpu_to_le64(a)
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#define LE16_TO_CPU(a) __cpu_to_le16(a)
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#define LE32_TO_CPU(a) __cpu_to_le32(a)
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#define LE64_TO_CPU(a) __cpu_to_le64(a)
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#define NTFS_GETU8(p) (*(ntfs_u8*)(p))
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#define NTFS_GETU16(p) ((ntfs_u16)LE16_TO_CPU(*(ntfs_u16*)(p)))
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#define NTFS_GETU24(p) ((ntfs_u32)NTFS_GETU16(p) | \
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((ntfs_u32)NTFS_GETU8(((char*)(p)) + 2) << 16))
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#define NTFS_GETU32(p) ((ntfs_u32)LE32_TO_CPU(*(ntfs_u32*)(p)))
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#define NTFS_GETU40(p) ((ntfs_u64)NTFS_GETU32(p) | \
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(((ntfs_u64)NTFS_GETU8(((char*)(p)) + 4)) << 32))
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#define NTFS_GETU48(p) ((ntfs_u64)NTFS_GETU32(p) | \
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(((ntfs_u64)NTFS_GETU16(((char*)(p)) + 4)) << 32))
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#define NTFS_GETU56(p) ((ntfs_u64)NTFS_GETU32(p) | \
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(((ntfs_u64)NTFS_GETU24(((char*)(p)) + 4)) << 32))
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#define NTFS_GETU64(p) ((ntfs_u64)LE64_TO_CPU(*(ntfs_u64*)(p)))
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/* Macros writing unsigned integers */
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#define NTFS_PUTU8(p,v) ((*(ntfs_u8*)(p)) = (v))
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#define NTFS_PUTU16(p,v) ((*(ntfs_u16*)(p)) = CPU_TO_LE16(v))
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#define NTFS_PUTU24(p,v) NTFS_PUTU16(p, (v) & 0xFFFF);\
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NTFS_PUTU8(((char*)(p)) + 2, (v) >> 16)
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#define NTFS_PUTU32(p,v) ((*(ntfs_u32*)(p)) = CPU_TO_LE32(v))
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#define NTFS_PUTU64(p,v) ((*(ntfs_u64*)(p)) = CPU_TO_LE64(v))
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/* Macros reading signed integers */
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#define NTFS_GETS8(p) ((*(ntfs_s8*)(p)))
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#define NTFS_GETS16(p) ((ntfs_s16)LE16_TO_CPU(*(short*)(p)))
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#define NTFS_GETS24(p) (NTFS_GETU24(p) < 0x800000 ? \
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(int)NTFS_GETU24(p) : \
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(int)(NTFS_GETU24(p) - 0x1000000))
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#define NTFS_GETS32(p) ((ntfs_s32)LE32_TO_CPU(*(int*)(p)))
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#define NTFS_GETS40(p) (((ntfs_s64)NTFS_GETU32(p)) | \
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(((ntfs_s64)NTFS_GETS8(((char*)(p)) + 4)) << 32))
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#define NTFS_GETS48(p) (((ntfs_s64)NTFS_GETU32(p)) | \
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(((ntfs_s64)NTFS_GETS16(((char*)(p)) + 4)) << 32))
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#define NTFS_GETS56(p) (((ntfs_s64)NTFS_GETU32(p)) | \
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(((ntfs_s64)NTFS_GETS24(((char*)(p)) + 4)) << 32))
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#define NTFS_GETS64(p) ((ntfs_s64)NTFS_GETU64(p))
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#define NTFS_PUTS8(p,v) NTFS_PUTU8(p,v)
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#define NTFS_PUTS16(p,v) NTFS_PUTU16(p,v)
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#define NTFS_PUTS24(p,v) NTFS_PUTU24(p,v)
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#define NTFS_PUTS32(p,v) NTFS_PUTU32(p,v)
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#define NTFS_PUTS64(p,v) NTFS_PUTU64(p,v)
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