239 lines
7.3 KiB
C++
239 lines
7.3 KiB
C++
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod BinTools Extension
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <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 <stdio.h>
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#include "CallMaker.h"
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#include "jit_compile.h"
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#include "extension.h"
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/* SourceMod <==> SourceHook type conversion functions */
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SourceHook::ProtoInfo::CallConvention GetSHCallConvention(SourceMod::CallConvention cv)
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{
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if (cv < SourceMod::CallConv_ThisCall || cv > SourceMod::CallConv_Cdecl)
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{
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return SourceHook::ProtoInfo::CallConv_Unknown;
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}
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return (SourceHook::ProtoInfo::CallConvention)(cv + 1);
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}
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SourceMod::CallConvention GetSMCallConvention(SourceHook::ProtoInfo::CallConvention cv)
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{
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assert(cv >= SourceHook::ProtoInfo::CallConv_ThisCall || cv <= SourceHook::ProtoInfo::CallConv_Cdecl);
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return (SourceMod::CallConvention)(cv - 1);
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}
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SourceHook::PassInfo::PassType GetSHPassType(SourceMod::PassType type)
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{
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if (type < SourceMod::PassType_Basic || type > SourceMod::PassType_Object)
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{
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return SourceHook::PassInfo::PassType_Unknown;
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}
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return (SourceHook::PassInfo::PassType)(type + 1);
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}
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SourceMod::PassType GetSMPassType(int type)
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{
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/* SourceMod doesn't provide an Unknown type so we it must be an error */
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assert(type >= SourceHook::PassInfo::PassType_Basic && type <= SourceHook::PassInfo::PassType_Object);
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return (SourceMod::PassType)(type - 1);
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}
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void GetSMPassInfo(SourceMod::PassInfo *out, const SourceHook::PassInfo *in)
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{
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out->size = in->size;
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out->flags = in->flags;
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out->type = GetSMPassType(in->type);
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}
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ICallWrapper *CallMaker::CreateCall(void *address,
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CallConvention cv,
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const PassInfo *retInfo,
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const PassInfo paramInfo[],
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unsigned int numParams,
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unsigned int fnFlags)
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{
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SourceHook::CProtoInfoBuilder protoInfo(GetSHCallConvention(cv));
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for (unsigned int i=0; i<numParams; i++)
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{
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protoInfo.AddParam(paramInfo[i].size, GetSHPassType(paramInfo[i].type), paramInfo[i].flags,
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NULL, NULL, NULL, NULL);
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}
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if (retInfo)
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{
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protoInfo.SetReturnType(retInfo->size, GetSHPassType(retInfo->type), retInfo->flags,
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NULL, NULL, NULL, NULL);
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}
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else
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{
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protoInfo.SetReturnType(0, SourceHook::PassInfo::PassType_Unknown, 0,
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NULL, NULL, NULL, NULL);
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}
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#if defined PLATFORM_X64
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return g_CallMaker2.CreateCall(address, &(*protoInfo), retInfo, paramInfo, fnFlags);
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#else
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return g_CallMaker2.CreateCall(address, &(*protoInfo));
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#endif
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}
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ICallWrapper *CallMaker::CreateVCall(unsigned int vtblIdx,
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unsigned int vtblOffs,
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unsigned int thisOffs,
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const PassInfo *retInfo,
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const PassInfo paramInfo[],
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unsigned int numParams,
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unsigned int fnFlags)
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{
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SourceHook::MemFuncInfo info;
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info.isVirtual = true;
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info.vtblindex = vtblIdx;
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info.vtbloffs = vtblOffs;
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info.thisptroffs = thisOffs;
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SourceHook::CProtoInfoBuilder protoInfo(SourceHook::ProtoInfo::CallConv_ThisCall);
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for (unsigned int i=0; i<numParams; i++)
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{
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protoInfo.AddParam(paramInfo[i].size, GetSHPassType(paramInfo[i].type), paramInfo[i].flags,
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NULL, NULL, NULL, NULL);
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}
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if (retInfo)
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{
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protoInfo.SetReturnType(retInfo->size, GetSHPassType(retInfo->type), retInfo->flags,
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NULL, NULL, NULL, NULL);
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}
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else
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{
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protoInfo.SetReturnType(0, SourceHook::PassInfo::PassType_Unknown, 0,
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NULL, NULL, NULL, NULL);
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}
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#if defined PLATFORM_X64
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return g_CallMaker2.CreateVirtualCall(&(*protoInfo), &info, retInfo, paramInfo, fnFlags);
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#else
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return g_CallMaker2.CreateVirtualCall(&(*protoInfo), &info);
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#endif
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}
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ICallWrapper *CallMaker2::CreateCall(void *address, const SourceHook::ProtoInfo *protoInfo)
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{
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#ifdef PLATFORM_X86
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CallWrapper *pWrapper = new CallWrapper(protoInfo);
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pWrapper->SetCalleeAddr(address);
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void *addr = JIT_CallCompile(pWrapper, FuncAddr_Direct);
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pWrapper->SetCodeBaseAddr(addr);
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return pWrapper;
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#else
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return nullptr;
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#endif
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}
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ICallWrapper *CallMaker2::CreateVirtualCall(const SourceHook::ProtoInfo *protoInfo,
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const SourceHook::MemFuncInfo *info)
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{
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#ifdef PLATFORM_X86
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CallWrapper *pWrapper = new CallWrapper(protoInfo);
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pWrapper->SetMemFuncInfo(info);
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void *addr = JIT_CallCompile(pWrapper, FuncAddr_VTable);
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pWrapper->SetCodeBaseAddr(addr);
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return pWrapper;
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#else
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return nullptr;
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#endif
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}
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ICallWrapper *CallMaker2::CreateCall(void *address, const SourceHook::ProtoInfo *protoInfo,
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const PassInfo *retInfo, const PassInfo paramInfo[],
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unsigned int fnFlags)
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{
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#ifdef PLATFORM_X64
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CallWrapper *pWrapper = new CallWrapper(protoInfo, retInfo, paramInfo, fnFlags);
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pWrapper->SetCalleeAddr(address);
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void *addr = JIT_CallCompile(pWrapper, FuncAddr_Direct);
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pWrapper->SetCodeBaseAddr(addr);
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return pWrapper;
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#else
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return nullptr;
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#endif
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}
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ICallWrapper *CallMaker2::CreateVirtualCall(const SourceHook::ProtoInfo *protoInfo,
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const SourceHook::MemFuncInfo *info,
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const PassInfo *retInfo,
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const PassInfo paramInfo[],
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unsigned int fnFlags)
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{
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#ifdef PLATFORM_X64
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CallWrapper *pWrapper = new CallWrapper(protoInfo, retInfo, paramInfo, fnFlags);
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pWrapper->SetMemFuncInfo(info);
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void *addr = JIT_CallCompile(pWrapper, FuncAddr_VTable);
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pWrapper->SetCodeBaseAddr(addr);
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return pWrapper;
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#else
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return nullptr;
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#endif
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}
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#if 0
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IHookWrapper *CallMaker2::CreateVirtualHook(SourceHook::ISourceHook *pSH,
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const SourceHook::ProtoInfo *protoInfo,
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const SourceHook::MemFuncInfo *info,
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VIRTUAL_HOOK_PROTO f)
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{
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HookWrapper *pWrapper = new HookWrapper(pSH, protoInfo, const_cast<SourceHook::MemFuncInfo *>(info), (void *)f);
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void *addr = JIT_HookCompile(pWrapper);
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pWrapper->SetHookWrpAddr(addr);
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ICallWrapper *callWrap = CreateVirtualCall(protoInfo, info);
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pWrapper->SetCallWrapperAddr(callWrap);
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return pWrapper;
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}
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#endif
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