/*
 * Copyright (c) 2001 - 2005 NetGroup, Politecnico di Torino (Italy)
 * Copyright (c) 2005 - 2006 CACE Technologies, Davis (California)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Politecnico di Torino, CACE Technologies 
 * nor the names of its contributors may be used to endorse or promote 
 * products derived from this software without specific prior written 
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef __memory_t
#define __memory_t

#define     uint8   UCHAR
#define     int8    CHAR
#define     uint16  USHORT
#define     int16   SHORT
#define     uint32  ULONG
#define     int32   LONG
#define     uint64  ULONGLONG
#define     int64   LONGLONG

/*memory type*/
typedef struct __MEM_TYPE
{
    uint8 * buffer;
    uint32 size;
}  MEM_TYPE, * PMEM_TYPE;

#define LONG_AT(base,offset) (*(int32*)((uint8*)base+(uint32)offset))

#define ULONG_AT(base,offset) (*(uint32*)((uint8*)base+(uint32)offset))

#define SHORT_AT(base,offset) (*(int16*)((uint8*)base+(uint32)offset))

#define USHORT_AT(base,offset) (*(uint16*)((uint8*)base+(uint32)offset))

__inline int32 SW_LONG_AT( void * b, uint32 c )
{
    return  (( int32 )*(( uint8 *)b + c )<< 24 |
        ( int32 )*(( uint8 *)b + c + 1 )<< 16 |
        ( int32 )*(( uint8 *)b + c + 2 )<< 8 |
        ( int32 )*(( uint8 *)b + c + 3 )<< 0 );
}

__inline uint32 SW_ULONG_AT( void * b, uint32 c )
{
    return  (( uint32 )*(( uint8 *)b + c )<< 24 |
        ( uint32 )*(( uint8 *)b + c + 1 )<< 16 |
        ( uint32 )*(( uint8 *)b + c + 2 )<< 8 |
        ( uint32 )*(( uint8 *)b + c + 3 )<< 0 );
}

__inline int16 SW_SHORT_AT( void * b, uint32 os )
{
    return (( int16 )
        (( int16 )*(( uint8 *)b + os + 0 )<< 8 |
        ( int16 )*(( uint8 *)b + os + 1 )<< 0 ));
}

__inline uint16 SW_USHORT_AT( void * b, uint32 os )
{
    return (( uint16 )
        (( uint16 )*(( uint8 *)b + os + 0 )<< 8 |
        ( uint16 )*(( uint8 *)b + os + 1 )<< 0 ));
}

__inline VOID SW_ULONG_ASSIGN( void * dst, uint32 src )
{
    *(( uint8 *)dst + 0 )= *(( uint8 *)& src + 3 );
    *(( uint8 *)dst + 1 )= *(( uint8 *)& src + 2 );
    *(( uint8 *)dst + 2 )= *(( uint8 *)& src + 1 );
    *(( uint8 *)dst + 3 )= *(( uint8 *)& src + 0 );
}

#ifdef WIN_NT_DRIVER

#define ALLOCATE_MEMORY(dest,type,amount) \
      (dest)=ExAllocatePoolWithTag(NonPagedPool,sizeof(type)*(amount), '0TWA');
#define ALLOCATE_ZERO_MEMORY(dest,type,amount) \
    {   \
        (dest)=ExAllocatePoolWithTag(NonPagedPool,sizeof(type)*(amount), '1TWA'); \
        if ((dest)!=NULL) \
            RtlZeroMemory((dest),sizeof(type)*(amount)); \
    }   

#define FREE_MEMORY(dest) ExFreePool(dest);
#define ZERO_MEMORY(dest,amount) RtlZeroMemory(dest,amount);
#define COPY_MEMORY(dest,src,amount) RtlCopyMemory(dest,src,amount);

#else

#define ALLOCATE_MEMORY(dest,type,amount) \
      (dest)=(type*)GlobalAlloc(GPTR, sizeof(type)*(amount));
#define ALLOCATE_ZERO_MEMORY(dest,type,amount) \
      (dest)=(type*)GlobalAlloc(GPTR, sizeof(type)*(amount));

#define FREE_MEMORY(dest) GlobalFree(dest);
#define ZERO_MEMORY(dest,amount) RtlZeroMemory(dest,amount);
#define COPY_MEMORY(dest,src,amount) RtlCopyMemory(dest,src,amount);

#endif /*WIN_NT_DRIVER*/

#endif