1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/extensions/bintools/CallWrapper.cpp	Sun Mar 30 07:00:22 2008 +0000
     1.3 @@ -0,0 +1,111 @@
     1.4 +/**
     1.5 + * vim: set ts=4 :
     1.6 + * =============================================================================
     1.7 + * SourceMod BinTools Extension
     1.8 + * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
     1.9 + * =============================================================================
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify it under
    1.12 + * the terms of the GNU General Public License, version 3.0, as published by the
    1.13 + * Free Software Foundation.
    1.14 + * 
    1.15 + * This program is distributed in the hope that it will be useful, but WITHOUT
    1.16 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    1.17 + * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
    1.18 + * details.
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License along with
    1.21 + * this program.  If not, see <http://www.gnu.org/licenses/>.
    1.22 + *
    1.23 + * As a special exception, AlliedModders LLC gives you permission to link the
    1.24 + * code of this program (as well as its derivative works) to "Half-Life 2," the
    1.25 + * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
    1.26 + * by the Valve Corporation.  You must obey the GNU General Public License in
    1.27 + * all respects for all other code used.  Additionally, AlliedModders LLC grants
    1.28 + * this exception to all derivative works.  AlliedModders LLC defines further
    1.29 + * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
    1.30 + * or <http://www.sourcemod.net/license.php>.
    1.31 + *
    1.32 + * Version: $Id$
    1.33 + */
    1.34 +
    1.35 +#include "extension.h"
    1.36 +#include "CallWrapper.h"
    1.37 +
    1.38 +CallWrapper::CallWrapper(CallConvention cv, const PassInfo *paramInfo, const PassInfo *retInfo, unsigned int numParams)
    1.39 +{
    1.40 +	m_Cv = cv;
    1.41 +
    1.42 +	if (numParams)
    1.43 +	{
    1.44 +		m_Params = new PassEncode[numParams];
    1.45 +		for (size_t i=0; i<numParams; i++)
    1.46 +		{
    1.47 +			m_Params[i].info = paramInfo[i];
    1.48 +		}
    1.49 +	} else {
    1.50 +		m_Params = NULL;
    1.51 +	}
    1.52 +
    1.53 +	if (retInfo)
    1.54 +	{
    1.55 +		m_RetParam = new PassInfo;
    1.56 +		*m_RetParam = *retInfo;
    1.57 +	} else {
    1.58 +		m_RetParam = NULL;
    1.59 +	}
    1.60 +
    1.61 +	m_NumParams = numParams;
    1.62 +
    1.63 +	/* Calculate virtual stack offsets for each parameter */
    1.64 +	size_t offs = 0;
    1.65 +
    1.66 +	if (cv == CallConv_ThisCall)
    1.67 +	{
    1.68 +		offs += sizeof(void *);
    1.69 +	}
    1.70 +	for (size_t i=0; i<numParams; i++)
    1.71 +	{
    1.72 +		m_Params[i].offset = offs;
    1.73 +		offs += m_Params[i].info.size;
    1.74 +	}
    1.75 +}
    1.76 +
    1.77 +CallWrapper::~CallWrapper()
    1.78 +{
    1.79 +	delete [] m_Params;
    1.80 +	delete m_RetParam;
    1.81 +	g_SPEngine->FreePageMemory(m_Addrs[ADDR_CODEBASE]);
    1.82 +}
    1.83 +
    1.84 +void CallWrapper::Destroy()
    1.85 +{
    1.86 +	delete this;
    1.87 +}
    1.88 +
    1.89 +CallConvention CallWrapper::GetCallConvention()
    1.90 +{
    1.91 +	return m_Cv;
    1.92 +}
    1.93 +
    1.94 +const PassEncode *CallWrapper::GetParamInfo(unsigned int num)
    1.95 +{
    1.96 +	return (num+1 > m_NumParams) ? NULL : &m_Params[num];
    1.97 +}
    1.98 +
    1.99 +const PassInfo *CallWrapper::GetReturnInfo()
   1.100 +{
   1.101 +	return m_RetParam;
   1.102 +}
   1.103 +
   1.104 +unsigned int CallWrapper::GetParamCount()
   1.105 +{
   1.106 +	return m_NumParams;
   1.107 +}
   1.108 +
   1.109 +void CallWrapper::Execute(void *vParamStack, void *retBuffer)
   1.110 +{
   1.111 +	typedef void (*CALL_EXECUTE)(void *, void *);
   1.112 +	CALL_EXECUTE fn = (CALL_EXECUTE)m_Addrs[ADDR_CODEBASE];
   1.113 +	fn(vParamStack, retBuffer);
   1.114 +}