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#ifndef XADMASTER_HOOK_MEM_C
#define XADMASTER_HOOK_MEM_C
/* $Id: hook_mem.c,v 1.5 2005/06/23 14:54:37 stoecker Exp $
Memory IO hooks
XAD library system for archive handling
Copyright (C) 1998 and later by Dirk Stcker <soft@dstoecker.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef AMIGA
#include <proto/xadmaster.h>
#endif
#include "include/functions.h"
#include "include/SDI_compiler.h"
/*************************** read-from-mem hook **************************/
FUNCHOOK(InHookMem)
{
struct xadMasterBaseP *xadMasterBase;
xadMasterBase = ai->xaip_MasterBase;
switch(param->xhp_Command)
{
case XADHC_READ:
if(param->xhp_DataPos + param->xhp_BufferSize > ai->xaip_InSize)
return XADERR_INPUT;
if(param->xhp_BufferPtr)
xadCopyMem(XADM ai->xaip_InMemory + param->xhp_DataPos, param->xhp_BufferPtr,
param->xhp_BufferSize);
param->xhp_DataPos += param->xhp_BufferSize;
break;
case XADHC_SEEK:
if(((xadSignSize)param->xhp_DataPos + param->xhp_CommandData < 0) ||
(param->xhp_DataPos + param->xhp_CommandData > ai->xaip_InSize))
return XADERR_INPUT;
param->xhp_DataPos += param->xhp_CommandData;
break;
case XADHC_INIT:
#ifdef DEBUG
DebugHook("InHookMem: XADHC_INIT");
#endif
param->xhp_DataPos = 0;
case XADHC_FREE:
case XADHC_ABORT:
break;
default: return XADERR_NOTSUPPORTED;
}
return 0;
}
ENDFUNC
/*************************** write-to-mem hook **************************/
FUNCHOOK(OutHookMem)
{
struct xadMasterBaseP *xadMasterBase;
xadMasterBase = ai->xaip_MasterBase;
switch(param->xhp_Command)
{
case XADHC_WRITE:
if(param->xhp_DataPos + param->xhp_BufferSize > ai->xaip_OutSize)
return XADERR_OUTPUT;
xadCopyMem(XADM param->xhp_BufferPtr, ai->xaip_OutMemory + param->xhp_DataPos,
param->xhp_BufferSize);
param->xhp_DataPos += param->xhp_BufferSize;
break;
case XADHC_SEEK:
if(((xadSignSize)param->xhp_DataPos + param->xhp_CommandData < 0) ||
(param->xhp_DataPos + param->xhp_CommandData > ai->xaip_OutSize))
return XADERR_OUTPUT;
param->xhp_DataPos += param->xhp_CommandData;
break;
case XADHC_INIT:
#ifdef DEBUG
DebugHook("OutHookMem: XADHC_INIT");
#endif
param->xhp_DataPos = 0;
case XADHC_FREE:
case XADHC_ABORT:
break;
default: return XADERR_NOTSUPPORTED;
}
return 0;
}
ENDFUNC
#endif /* XADMASTER_HOOK_MEM_C */
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