92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
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/**
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* vim: set ts=4 :
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* ===============================================================
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* SourceMod, Copyright (C) 2004-2007 AlliedModders LLC.
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* All rights reserved.
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* ===============================================================
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*
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* This file is part of the SourceMod/SourcePawn SDK. This file may only be
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* used or modified under the Terms and Conditions of its License Agreement,
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* which is found in public/licenses/LICENSE.txt. As of this notice, derivative
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* works must be licensed under the GNU General Public License (version 2 or
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* greater). A copy of the GPL is included under public/licenses/GPL.txt.
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*
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* To view the latest information, see: http://www.sourcemod.net/license.php
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*
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* Version: $Id$
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*/
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#include "extension.h"
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#include "CallWrapper.h"
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CallWrapper::CallWrapper(CallConvention cv, const PassInfo *paramInfo, const PassInfo *retInfo, unsigned int numParams)
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{
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m_Cv = cv;
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if (numParams)
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{
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m_Params = new PassEncode[numParams];
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for (size_t i=0; i<numParams; i++)
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{
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m_Params[i].info = paramInfo[i];
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}
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}
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if (retInfo)
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{
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m_RetParam = new PassInfo;
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*m_RetParam = *retInfo;
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} else {
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m_RetParam = NULL;
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}
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m_NumParams = numParams;
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/* Calculate virtual stack offsets for each parameter */
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size_t offs = 0;
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if (cv == CallConv_ThisCall)
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{
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offs += sizeof(void *);
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}
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for (size_t i=0; i<numParams; i++)
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{
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m_Params[i].offset = offs;
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offs += m_Params[i].info.size;
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}
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}
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CallWrapper::~CallWrapper()
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{
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delete [] m_Params;
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delete m_RetParam;
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g_SPEngine->ExecFree(m_Addrs[ADDR_CODEBASE]);
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}
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CallConvention CallWrapper::GetCallConvention()
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{
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return m_Cv;
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}
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const PassEncode *CallWrapper::GetParamInfo(unsigned int num)
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{
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return (num+1 > m_NumParams) ? NULL : &m_Params[num];
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}
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const PassInfo *CallWrapper::GetReturnInfo()
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{
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return m_RetParam;
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}
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unsigned int CallWrapper::GetParamCount()
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{
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return m_NumParams;
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}
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void CallWrapper::Execute(void *vParamStack, void *retBuffer)
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{
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typedef void (*CALL_EXECUTE)(void *, void *);
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CALL_EXECUTE fn = (CALL_EXECUTE)m_Addrs[ADDR_CODEBASE];
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fn(vParamStack, retBuffer);
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}
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