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memory_t.h

/*
 * Copyright (c) 2001 - 2003
 * NetGroup, Politecnico di Torino (Italy)
 * 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 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)=ExAllocatePool(NonPagedPool,sizeof(type)*(amount));
#define ALLOCATE_ZERO_MEMORY(dest,type,amount) \
      { \
            (dest)=ExAllocatePool(NonPagedPool,sizeof(type)*(amount)); \
            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 


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