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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <memmodel.h>
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#include "mmu/mm.h"
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#include "mmboot.h"
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#include "mmu/mcodepaging.h"
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#include "cache_maintenance.h"
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DCodeSeg* M::NewCodeSeg(TCodeSegCreateInfo&)
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{
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__KTRACE_OPT(KDLL,Kern::Printf("M::NewCodeSeg"));
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return new DMemModelCodeSeg;
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}
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//
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// DMemModelCodeSegMemory
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//
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DEpocCodeSegMemory* DEpocCodeSegMemory::New(DEpocCodeSeg* aCodeSeg)
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{
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return new DMemModelCodeSegMemory(aCodeSeg);
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}
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DMemModelCodeSegMemory::DMemModelCodeSegMemory(DEpocCodeSeg* aCodeSeg)
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: DEpocCodeSegMemory(aCodeSeg)
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{
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}
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TInt DMemModelCodeSegMemory::Create(TCodeSegCreateInfo& aInfo, DMemModelProcess* aProcess)
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{
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TInt r;
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TUint codePageCount;
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TUint dataPageCount;
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TBool isDemandPaged;
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if(!aInfo.iUseCodePaging)
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{
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isDemandPaged = 0;
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codePageCount = MM::RoundToPageCount(iRamInfo.iCodeSize+iRamInfo.iDataSize);
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dataPageCount = 0;
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}
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else
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{
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isDemandPaged = 1;
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codePageCount = MM::RoundToPageCount(iRamInfo.iCodeSize);
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dataPageCount = MM::RoundToPageCount(iRamInfo.iDataSize);
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iDataSectionMemory = Kern::Alloc(iRamInfo.iDataSize);
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if(!iDataSectionMemory)
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return KErrNoMemory;
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}
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iCodeSeg->iSize = codePageCount<<KPageShift;
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// allocate virtual address for code to run at...
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const TUint codeSize = codePageCount<<KPageShift;
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if(iCodeSeg->IsExe())
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{// Get the os asid without opening a reference on it as aProcess isn't fully
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// created yet so won't free its os asid.
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r = MM::VirtualAlloc(aProcess->OsAsid(),iRamInfo.iCodeRunAddr,codeSize,isDemandPaged);
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if(r!=KErrNone)
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return r;
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aProcess->iCodeVirtualAllocSize = codeSize;
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aProcess->iCodeVirtualAllocAddress = iRamInfo.iCodeRunAddr;
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iCodeSeg->iAttr |= ECodeSegAttAddrNotUnique;
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}
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else
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{
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r = MM::VirtualAllocCommon(iRamInfo.iCodeRunAddr,codeSize,isDemandPaged);
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if(r!=KErrNone)
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return r;
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iVirtualAllocCommonSize = codeSize;
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}
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// create memory object for codeseg...
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if(isDemandPaged)
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{
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// create memory object...
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r = MM::PagedCodeNew(iCodeMemoryObject, codePageCount, iPagedCodeInfo);
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if(r!=KErrNone)
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return r;
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// get file blockmap for codeseg contents...
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r = iPagedCodeInfo->ReadBlockMap(aInfo);
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if (r != KErrNone)
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return r;
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}
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else
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{
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// create memory object...
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TMemoryCreateFlags flags = (TMemoryCreateFlags)(EMemoryCreateNoWipe | EMemoryCreateAllowExecution);
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r = MM::MemoryNew(iCodeMemoryObject, EMemoryObjectMovable, codePageCount, flags);
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if(r!=KErrNone)
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return r;
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// commit memory...
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r = MM::MemoryAlloc(iCodeMemoryObject,0,codePageCount);
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if(r!=KErrNone)
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return r;
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}
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// create a mapping of the memory for the loader...
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// No need to open reference on os asid it is the current thread/process's.
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DMemModelProcess* pP = (DMemModelProcess*)TheCurrentThread->iOwningProcess;
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r = MM::MappingNew(iCodeLoadMapping,iCodeMemoryObject,EUserReadWrite,pP->OsAsid());
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if(r!=KErrNone)
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return r;
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iRamInfo.iCodeLoadAddr = MM::MappingBase(iCodeLoadMapping);
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// work out where the loader is to put the loaded data section...
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TInt loadSize = iRamInfo.iCodeSize; // size of memory filled by loader
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if(iRamInfo.iDataSize)
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{
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if(!dataPageCount)
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{
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// data loaded immediately after code...
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iRamInfo.iDataLoadAddr = iRamInfo.iCodeLoadAddr+iRamInfo.iCodeSize;
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loadSize += iRamInfo.iDataSize;
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}
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else
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{
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// create memory object for data...
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DMemoryObject* dataMemory;
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r = MM::MemoryNew(dataMemory, EMemoryObjectMovable, dataPageCount, EMemoryCreateNoWipe);
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if(r!=KErrNone)
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return r;
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// commit memory...
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r = MM::MemoryAlloc(dataMemory,0,dataPageCount);
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if(r==KErrNone)
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{
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// create a mapping of the memory for the loader...
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// No need to open reference on os asid it is the current thread/process's.
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r = MM::MappingNew(iDataLoadMapping,dataMemory,EUserReadWrite,pP->OsAsid());
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}
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if(r!=KErrNone)
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{
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MM::MemoryDestroy(dataMemory);
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return r;
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}
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iRamInfo.iDataLoadAddr = MM::MappingBase(iDataLoadMapping);
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}
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}
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if(!isDemandPaged)
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{
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// wipe memory that the loader wont fill...
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UNLOCK_USER_MEMORY();
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memset((TAny*)(iRamInfo.iCodeLoadAddr+loadSize), 0x03, codeSize-loadSize);
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LOCK_USER_MEMORY();
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}
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// done...
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iCreator = pP;
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return KErrNone;
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}
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TInt DMemModelCodeSegMemory::Loaded(TCodeSegCreateInfo& aInfo)
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{
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if(iPagedCodeInfo)
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{
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// get information needed to fixup code for it's run address...
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TInt r = iPagedCodeInfo->ReadFixupTables(aInfo);
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if(r!=KErrNone)
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return r;
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MM::PagedCodeLoaded(iCodeMemoryObject, iRamInfo.iCodeLoadAddr);
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}
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else
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{
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// make code visible to instruction cache...
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UNLOCK_USER_MEMORY();
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CacheMaintenance::CodeChanged(iRamInfo.iCodeLoadAddr, iRamInfo.iCodeSize);
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LOCK_USER_MEMORY();
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}
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// adjust iDataLoadAddr to point to address contents for initial data section
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// in running process...
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if(iRamInfo.iDataLoadAddr)
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{
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TAny* dataSection = iDataSectionMemory;
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if(dataSection)
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{
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// contents for initial data section to be stored in iDataSectionMemory...
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UNLOCK_USER_MEMORY();
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memcpy(dataSection,(TAny*)iRamInfo.iDataLoadAddr,iRamInfo.iDataSize);
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LOCK_USER_MEMORY();
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iRamInfo.iDataLoadAddr = (TLinAddr)dataSection;
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}
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else
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{
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// contents for initial data section stored after code...
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__NK_ASSERT_DEBUG(iRamInfo.iDataLoadAddr==iRamInfo.iCodeLoadAddr+iRamInfo.iCodeSize); // check data loaded at end of code
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iRamInfo.iDataLoadAddr = iRamInfo.iCodeRunAddr+iRamInfo.iCodeSize;
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}
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}
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// copy export directory (this will now have fixups applied)...
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TInt exportDirSize = iRamInfo.iExportDirCount * sizeof(TLinAddr);
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if(exportDirSize > 0 || (exportDirSize==0 && (iCodeSeg->iAttr&ECodeSegAttNmdExpData)) )
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{
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exportDirSize += sizeof(TLinAddr);
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TLinAddr* expDir = (TLinAddr*)Kern::Alloc(exportDirSize);
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if(!expDir)
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return KErrNoMemory;
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iCopyOfExportDir = expDir;
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TLinAddr expDirLoad = iRamInfo.iExportDir-iRamInfo.iCodeRunAddr+iRamInfo.iCodeLoadAddr;
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memcpy(expDir,(TAny*)(expDirLoad-sizeof(TLinAddr)),exportDirSize);
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}
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// unmap code from loading process...
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DMemModelProcess* pP=(DMemModelProcess*)TheCurrentThread->iOwningProcess;
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__ASSERT_ALWAYS(iCreator==pP, MM::Panic(MM::ECodeSegLoadedNotCreator));
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MM::MappingDestroy(iCodeLoadMapping);
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MM::MappingAndMemoryDestroy(iDataLoadMapping);
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iCreator=NULL;
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// Mark the code memory object read only to prevent malicious code modifying it.
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TInt r = MM::MemorySetReadOnly(iCodeMemoryObject);
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__ASSERT_ALWAYS(r == KErrNone, MM::Panic(MM::ECodeSegSetReadOnlyFailure));
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return KErrNone;
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}
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void DMemModelCodeSegMemory::Destroy()
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{
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MM::MappingDestroy(iCodeLoadMapping);
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MM::MappingAndMemoryDestroy(iDataLoadMapping);
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}
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DMemModelCodeSegMemory::~DMemModelCodeSegMemory()
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{
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__KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSegMemory::~DMemModelCodeSegMemory %x", this));
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__NK_ASSERT_DEBUG(iAccessCount==0);
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MM::MappingDestroy(iCodeLoadMapping);
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MM::MappingAndMemoryDestroy(iDataLoadMapping);
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MM::MemoryDestroy(iCodeMemoryObject);
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if(iVirtualAllocCommonSize)
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MM::VirtualFreeCommon(iRamInfo.iCodeRunAddr, iVirtualAllocCommonSize);
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Kern::Free(iCopyOfExportDir);
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Kern::Free(iDataSectionMemory);
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}
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//
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// DMemModelCodeSeg
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//
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DMemModelCodeSeg::DMemModelCodeSeg()
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{
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}
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DMemModelCodeSeg::~DMemModelCodeSeg()
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{
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__KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::Destruct %C", this));
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DCodeSeg::Wait();
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MM::MappingDestroy(iCodeLoadMapping);
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MM::MappingDestroy(iCodeGlobalMapping);
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MM::MemoryDestroy(iCodeMemoryObject);
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if(Memory())
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Memory()->Destroy();
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if(iDataAllocSize)
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MM::VirtualFreeCommon(iDataAllocBase,iDataAllocSize);
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DCodeSeg::Signal();
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Kern::Free(iKernelData);
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DEpocCodeSeg::Destruct();
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}
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TInt DMemModelCodeSeg::DoCreateRam(TCodeSegCreateInfo& aInfo, DProcess* aProcess)
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{
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__KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::DoCreateRam %C", this));
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SRamCodeInfo& ri = RamInfo();
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iSize = MM::RoundToPageSize(ri.iCodeSize+ri.iDataSize);
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if (iSize==0)
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return KErrCorrupt;
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TBool kernel = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel );
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// TBool user_global = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttGlobal );
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TBool user_local = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == 0 );
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TUint total_data_size = ri.iDataSize+ri.iBssSize;
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if(user_local)
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{
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// setup paging attribute for code...
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if(aInfo.iUseCodePaging)
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iAttr |= ECodeSegAttCodePaged;
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if(total_data_size && !IsExe())
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{
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// setup paging attribute for data section...
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if(aInfo.iUseCodePaging)
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if(K::MemModelAttributes & EMemModelAttrDataPaging)
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iAttr |= ECodeSegAttDataPaged;
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// allocate virtual address for data section...
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TInt r = MM::VirtualAllocCommon(iDataAllocBase,total_data_size,iAttr&ECodeSegAttDataPaged);
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if(r!=KErrNone)
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return r;
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iDataAllocSize = total_data_size;
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ri.iDataRunAddr = iDataAllocBase;
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}
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// create DCodeSegMemory for RAM loaded user local code...
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TInt r = Memory()->Create(aInfo,(DMemModelProcess*)aProcess);
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#ifdef BTRACE_FLEXIBLE_MEM_MODEL
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if (r == KErrNone)
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{
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BTrace8(BTrace::EFlexibleMemModel,BTrace::EMemoryObjectIsCodeSeg,Memory()->iCodeMemoryObject,this);
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}
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#endif
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return r;
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}
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// kernel or user-global code...
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// create memory object for codeseg...
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TMemoryCreateFlags flags = EMemoryCreateAllowExecution;
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if(kernel)
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{
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flags = (TMemoryCreateFlags)(flags|EMemoryCreateNoWipe);
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}
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|
361 |
TInt r = MM::MemoryNew(iCodeMemoryObject, EMemoryObjectMovable, MM::BytesToPages(iSize), flags);
|
|
|
362 |
if(r!=KErrNone)
|
|
|
363 |
return r;
|
|
|
364 |
|
|
|
365 |
// commit memory...
|
|
|
366 |
r = MM::MemoryAlloc(iCodeMemoryObject,0,MM::BytesToPages(iSize));
|
|
|
367 |
if(r!=KErrNone)
|
|
|
368 |
return r;
|
|
|
369 |
|
|
|
370 |
// create a mapping of the memory for the loader...
|
|
|
371 |
// No need to open reference on os asid it is the current thread/process's.
|
|
|
372 |
DMemModelProcess* pP = (DMemModelProcess*)TheCurrentThread->iOwningProcess;
|
|
|
373 |
r = MM::MappingNew(iCodeLoadMapping,iCodeMemoryObject,EUserReadWrite,pP->OsAsid());
|
|
|
374 |
if(r!=KErrNone)
|
|
|
375 |
return r;
|
|
|
376 |
ri.iCodeLoadAddr = MM::MappingBase(iCodeLoadMapping);
|
|
|
377 |
|
|
|
378 |
// create a global mapping of the memory for the codeseg to run at...
|
|
|
379 |
r = MM::MappingNew(iCodeGlobalMapping,iCodeMemoryObject,kernel?ESupervisorExecute:EUserExecute,KKernelOsAsid);
|
|
|
380 |
if(r!=KErrNone)
|
|
|
381 |
return r;
|
|
|
382 |
ri.iCodeRunAddr = MM::MappingBase(iCodeGlobalMapping);
|
|
|
383 |
|
|
|
384 |
if(kernel)
|
|
|
385 |
{
|
|
|
386 |
// setup data section memory...
|
|
|
387 |
if (ri.iDataSize)
|
|
|
388 |
ri.iDataLoadAddr = ri.iCodeLoadAddr+ri.iCodeSize;
|
|
|
389 |
if (total_data_size)
|
|
|
390 |
{
|
|
|
391 |
iKernelData = Kern::Alloc(total_data_size);
|
|
|
392 |
if (!iKernelData)
|
|
|
393 |
return KErrNoMemory;
|
|
|
394 |
ri.iDataRunAddr = (TLinAddr)iKernelData;
|
|
|
395 |
}
|
|
|
396 |
}
|
|
|
397 |
else
|
|
|
398 |
{
|
|
|
399 |
// we don't allow static data in global code...
|
|
|
400 |
ri.iDataLoadAddr = 0;
|
|
|
401 |
ri.iDataRunAddr = 0;
|
|
|
402 |
}
|
|
|
403 |
|
|
|
404 |
#ifdef BTRACE_FLEXIBLE_MEM_MODEL
|
|
|
405 |
BTrace8(BTrace::EFlexibleMemModel,BTrace::EMemoryObjectIsCodeSeg,iCodeMemoryObject,this);
|
|
|
406 |
#endif
|
|
|
407 |
|
|
|
408 |
// done...
|
|
|
409 |
return KErrNone;
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
|
|
|
413 |
TInt DMemModelCodeSeg::DoCreateXIP(DProcess* aProcess)
|
|
|
414 |
{
|
|
|
415 |
// __KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::DoCreateXIP %C proc %O", this, aProcess));
|
|
|
416 |
return KErrNone;
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
|
|
|
420 |
TInt DMemModelCodeSeg::Loaded(TCodeSegCreateInfo& aInfo)
|
|
|
421 |
{
|
|
|
422 |
if(iXIP)
|
|
|
423 |
return DEpocCodeSeg::Loaded(aInfo);
|
|
|
424 |
|
|
|
425 |
TBool kernel = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel );
|
|
|
426 |
TBool user_global = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttGlobal );
|
|
|
427 |
TBool user_local = ( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == 0 );
|
|
|
428 |
if(user_local)
|
|
|
429 |
{
|
|
|
430 |
TInt r = Memory()->Loaded(aInfo);
|
|
|
431 |
if(r!=KErrNone)
|
|
|
432 |
return r;
|
|
|
433 |
}
|
|
|
434 |
else if((kernel && iExeCodeSeg!=this) || user_global)
|
|
|
435 |
{
|
|
|
436 |
// user-global or kernel code...
|
|
|
437 |
SRamCodeInfo& ri = RamInfo();
|
|
|
438 |
UNLOCK_USER_MEMORY();
|
|
|
439 |
CacheMaintenance::CodeChanged(ri.iCodeLoadAddr, ri.iCodeSize);
|
|
|
440 |
LOCK_USER_MEMORY();
|
|
|
441 |
MM::MappingDestroy(iCodeLoadMapping);
|
|
|
442 |
// adjust iDataLoadAddr to point to address contents for initial data section
|
|
|
443 |
// in running process...
|
|
|
444 |
if(ri.iDataLoadAddr)
|
|
|
445 |
ri.iDataLoadAddr = ri.iCodeRunAddr+ri.iCodeSize;
|
|
|
446 |
|
|
|
447 |
// Mark the code memory object read only to prevent malicious code modifying it.
|
|
|
448 |
TInt r = MM::MemorySetReadOnly(iCodeMemoryObject);
|
|
|
449 |
__ASSERT_ALWAYS(r == KErrNone, MM::Panic(MM::ECodeSegSetReadOnlyFailure));
|
|
|
450 |
}
|
|
|
451 |
return DEpocCodeSeg::Loaded(aInfo);
|
|
|
452 |
}
|
|
|
453 |
|
|
|
454 |
|
|
|
455 |
void DMemModelCodeSeg::ReadExportDir(TUint32* aDest)
|
|
|
456 |
{
|
|
|
457 |
__KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::ReadExportDir %C %08x",this, aDest));
|
|
|
458 |
|
|
|
459 |
if(!iXIP)
|
|
|
460 |
{
|
|
|
461 |
// This is not XIP code so the loader can't access the export directory.
|
|
|
462 |
if (Memory()->iCopyOfExportDir)
|
|
|
463 |
{// This must be local user side code.
|
|
|
464 |
__NK_ASSERT_DEBUG((iAttr & (ECodeSegAttKernel|ECodeSegAttGlobal)) == 0);
|
|
|
465 |
// Copy the kernel's copy of the export directory for this code seg to the loader's buffer.
|
|
|
466 |
SRamCodeInfo& ri = RamInfo();
|
|
|
467 |
TInt size = (ri.iExportDirCount + 1) * sizeof(TLinAddr);
|
|
|
468 |
kumemput(aDest, Memory()->iCopyOfExportDir, size);
|
|
|
469 |
}
|
|
|
470 |
else
|
|
|
471 |
{// This must be kernel side code.
|
|
|
472 |
__NK_ASSERT_DEBUG((iAttr & (ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel);
|
|
|
473 |
// Copy the export directory for this code seg to the loader's buffer.
|
|
|
474 |
SRamCodeInfo& ri = RamInfo();
|
|
|
475 |
TInt size = (ri.iExportDirCount + 1) * sizeof(TLinAddr);
|
|
|
476 |
TAny* expDirLoad = (TAny*)(ri.iExportDir - sizeof(TLinAddr));
|
|
|
477 |
kumemput(aDest, expDirLoad, size);
|
|
|
478 |
}
|
|
|
479 |
}
|
|
|
480 |
}
|
|
|
481 |
|
|
|
482 |
|
|
|
483 |
TBool DMemModelCodeSeg::OpenCheck(DProcess* aProcess)
|
|
|
484 |
{
|
|
|
485 |
return FindCheck(aProcess);
|
|
|
486 |
}
|
|
|
487 |
|
|
|
488 |
|
|
|
489 |
TBool DMemModelCodeSeg::FindCheck(DProcess* aProcess)
|
|
|
490 |
{
|
|
|
491 |
__KTRACE_OPT(KDLL,Kern::Printf("CSEG:%08x Compat? proc=%O",this,aProcess));
|
|
|
492 |
if (aProcess)
|
|
|
493 |
{
|
|
|
494 |
DMemModelProcess& p=*(DMemModelProcess*)aProcess;
|
|
|
495 |
DCodeSeg* pPSeg=p.CodeSeg();
|
|
|
496 |
if (iAttachProcess && iAttachProcess!=aProcess)
|
|
|
497 |
return EFalse;
|
|
|
498 |
if (iExeCodeSeg && iExeCodeSeg!=pPSeg)
|
|
|
499 |
return EFalse;
|
|
|
500 |
}
|
|
|
501 |
return ETrue;
|
|
|
502 |
}
|
|
|
503 |
|
|
|
504 |
|
|
|
505 |
void DMemModelCodeSeg::BTracePrime(TInt aCategory)
|
|
|
506 |
{
|
|
|
507 |
DCodeSeg::BTracePrime(aCategory);
|
|
|
508 |
|
|
|
509 |
#ifdef BTRACE_FLEXIBLE_MEM_MODEL
|
|
|
510 |
if (aCategory == BTrace::EFlexibleMemModel || aCategory == -1)
|
|
|
511 |
{
|
|
|
512 |
// code seg mutex is held here, so memory objects cannot be destroyed
|
|
|
513 |
DMemModelCodeSegMemory* codeSegMemory = Memory();
|
|
|
514 |
if (codeSegMemory)
|
|
|
515 |
{
|
|
|
516 |
if (codeSegMemory->iCodeMemoryObject)
|
|
|
517 |
{
|
|
|
518 |
BTrace8(BTrace::EFlexibleMemModel,BTrace::EMemoryObjectIsCodeSeg,Memory()->iCodeMemoryObject,this);
|
|
|
519 |
}
|
|
|
520 |
}
|
|
|
521 |
else
|
|
|
522 |
{
|
|
|
523 |
if (iCodeMemoryObject)
|
|
|
524 |
{
|
|
|
525 |
BTrace8(BTrace::EFlexibleMemModel,BTrace::EMemoryObjectIsCodeSeg,iCodeMemoryObject,this);
|
|
|
526 |
}
|
|
|
527 |
}
|
|
|
528 |
}
|
|
|
529 |
#endif
|
|
|
530 |
}
|
|
|
531 |
|
|
|
532 |
|
|
|
533 |
//
|
|
|
534 |
// TPagedCodeInfo
|
|
|
535 |
//
|
|
|
536 |
|
|
|
537 |
TPagedCodeInfo::~TPagedCodeInfo()
|
|
|
538 |
{
|
|
|
539 |
Kern::Free(iCodeRelocTable);
|
|
|
540 |
Kern::Free(iCodePageOffsets);
|
|
|
541 |
}
|
|
|
542 |
|
|
|
543 |
|
|
|
544 |
TInt TPagedCodeInfo::ReadBlockMap(const TCodeSegCreateInfo& aInfo)
|
|
|
545 |
{
|
|
|
546 |
if(aInfo.iCodeBlockMapEntriesSize <= 0)
|
|
|
547 |
return KErrArgument; // no block map provided
|
|
|
548 |
|
|
|
549 |
// get compression data...
|
|
|
550 |
iCompressionType = aInfo.iCompressionType;
|
|
|
551 |
switch(iCompressionType)
|
|
|
552 |
{
|
|
|
553 |
case KFormatNotCompressed:
|
|
|
554 |
__ASSERT_COMPILE(KFormatNotCompressed==0); // Decompress() assumes this
|
|
|
555 |
break;
|
|
|
556 |
|
|
|
557 |
case KUidCompressionBytePair:
|
|
|
558 |
{
|
|
|
559 |
if(!aInfo.iCodePageOffsets)
|
|
|
560 |
return KErrArgument;
|
|
|
561 |
|
|
|
562 |
TInt pageCount = MM::RoundToPageCount(aInfo.iCodeSize);
|
|
|
563 |
|
|
|
564 |
TInt size = sizeof(TInt32) * (pageCount + 1);
|
|
|
565 |
iCodePageOffsets = (TInt32*)Kern::Alloc(size);
|
|
|
566 |
if(!iCodePageOffsets)
|
|
|
567 |
return KErrNoMemory;
|
|
|
568 |
kumemget32(iCodePageOffsets, aInfo.iCodePageOffsets, size);
|
|
|
569 |
|
|
|
570 |
#ifdef __DUMP_BLOCKMAP_INFO
|
|
|
571 |
Kern::Printf("CodePageOffsets:");
|
|
|
572 |
for (TInt i = 0 ; i < pageCount + 1 ; ++i)
|
|
|
573 |
Kern::Printf(" %08x", iCodePageOffsets[i]);
|
|
|
574 |
#endif
|
|
|
575 |
|
|
|
576 |
TInt last = 0;
|
|
|
577 |
for(TInt j=0; j<pageCount+1; ++j)
|
|
|
578 |
{
|
|
|
579 |
if(iCodePageOffsets[j] < last ||
|
|
|
580 |
iCodePageOffsets[j] > (aInfo.iCodeLengthInFile + aInfo.iCodeStartInFile))
|
|
|
581 |
{
|
|
|
582 |
__NK_ASSERT_DEBUG(0);
|
|
|
583 |
return KErrCorrupt;
|
|
|
584 |
}
|
|
|
585 |
last = iCodePageOffsets[j];
|
|
|
586 |
}
|
|
|
587 |
}
|
|
|
588 |
break;
|
|
|
589 |
|
|
|
590 |
default:
|
|
|
591 |
return KErrNotSupported;
|
|
|
592 |
}
|
|
|
593 |
|
|
|
594 |
// Copy block map data itself...
|
|
|
595 |
|
|
|
596 |
#ifdef __DUMP_BLOCKMAP_INFO
|
|
|
597 |
Kern::Printf("Original block map");
|
|
|
598 |
Kern::Printf(" block granularity: %d", aInfo.iCodeBlockMapCommon.iBlockGranularity);
|
|
|
599 |
Kern::Printf(" block start offset: %x", aInfo.iCodeBlockMapCommon.iBlockStartOffset);
|
|
|
600 |
Kern::Printf(" start block address: %016lx", aInfo.iCodeBlockMapCommon.iStartBlockAddress);
|
|
|
601 |
Kern::Printf(" local drive number: %d", aInfo.iCodeBlockMapCommon.iLocalDriveNumber);
|
|
|
602 |
Kern::Printf(" entry size: %d", aInfo.iCodeBlockMapEntriesSize);
|
|
|
603 |
#endif
|
|
|
604 |
|
|
|
605 |
// Find relevant paging device
|
|
|
606 |
iCodeLocalDrive = aInfo.iCodeBlockMapCommon.iLocalDriveNumber;
|
|
|
607 |
if(TUint(iCodeLocalDrive) >= (TUint)KMaxLocalDrives)
|
|
|
608 |
{
|
|
|
609 |
__KTRACE_OPT(KPAGING,Kern::Printf("Bad local drive number"));
|
|
|
610 |
return KErrArgument;
|
|
|
611 |
}
|
|
|
612 |
|
|
|
613 |
DPagingDevice* device = CodePagingDevice(iCodeLocalDrive);
|
|
|
614 |
if(!device)
|
|
|
615 |
{
|
|
|
616 |
__KTRACE_OPT(KPAGING,Kern::Printf("No paging device installed for drive"));
|
|
|
617 |
return KErrNotSupported;
|
|
|
618 |
}
|
|
|
619 |
|
|
|
620 |
// Set code start offset
|
|
|
621 |
iCodeStartInFile = aInfo.iCodeStartInFile;
|
|
|
622 |
if(iCodeStartInFile < 0)
|
|
|
623 |
{
|
|
|
624 |
__KTRACE_OPT(KPAGING,Kern::Printf("Bad code start offset"));
|
|
|
625 |
return KErrArgument;
|
|
|
626 |
}
|
|
|
627 |
|
|
|
628 |
// Allocate buffer for block map and copy from user-side
|
|
|
629 |
TBlockMapEntryBase* buffer = (TBlockMapEntryBase*)Kern::Alloc(aInfo.iCodeBlockMapEntriesSize);
|
|
|
630 |
if(!buffer)
|
|
|
631 |
return KErrNoMemory;
|
|
|
632 |
kumemget32(buffer, aInfo.iCodeBlockMapEntries, aInfo.iCodeBlockMapEntriesSize);
|
|
|
633 |
|
|
|
634 |
#ifdef __DUMP_BLOCKMAP_INFO
|
|
|
635 |
Kern::Printf(" entries:");
|
|
|
636 |
for (TInt k = 0 ; k < aInfo.iCodeBlockMapEntriesSize / sizeof(TBlockMapEntryBase) ; ++k)
|
|
|
637 |
Kern::Printf(" %d: %d blocks at %08x", k, buffer[k].iNumberOfBlocks, buffer[k].iStartBlock);
|
|
|
638 |
#endif
|
|
|
639 |
|
|
|
640 |
// Initialise block map
|
|
|
641 |
TInt r = iBlockMap.Initialise(aInfo.iCodeBlockMapCommon,
|
|
|
642 |
buffer,
|
|
|
643 |
aInfo.iCodeBlockMapEntriesSize,
|
|
|
644 |
device->iReadUnitShift,
|
|
|
645 |
iCodeStartInFile + aInfo.iCodeLengthInFile);
|
|
|
646 |
if(r!=KErrNone)
|
|
|
647 |
{
|
|
|
648 |
Kern::Free(buffer);
|
|
|
649 |
return r;
|
|
|
650 |
}
|
|
|
651 |
|
|
|
652 |
#if defined(__DUMP_BLOCKMAP_INFO) && defined(_DEBUG)
|
|
|
653 |
iBlockMap.Dump();
|
|
|
654 |
#endif
|
|
|
655 |
|
|
|
656 |
iCodeSize = aInfo.iCodeSize;
|
|
|
657 |
return KErrNone;
|
|
|
658 |
}
|
|
|
659 |
|
|
|
660 |
|
|
|
661 |
/**
|
|
|
662 |
Read code relocation table and import fixup table from user side.
|
|
|
663 |
*/
|
|
|
664 |
TInt TPagedCodeInfo::ReadFixupTables(const TCodeSegCreateInfo& aInfo)
|
|
|
665 |
{
|
|
|
666 |
iCodeRelocTableSize = aInfo.iCodeRelocTableSize;
|
|
|
667 |
iImportFixupTableSize = aInfo.iImportFixupTableSize;
|
|
|
668 |
iCodeDelta = aInfo.iCodeDelta;
|
|
|
669 |
iDataDelta = aInfo.iDataDelta;
|
|
|
670 |
|
|
|
671 |
// round sizes up to four-byte boundaries...
|
|
|
672 |
TUint relocSize = (iCodeRelocTableSize + 3) & ~3;
|
|
|
673 |
TUint fixupSize = (iImportFixupTableSize + 3) & ~3;
|
|
|
674 |
|
|
|
675 |
// copy relocs and fixups...
|
|
|
676 |
iCodeRelocTable = (TUint8*)Kern::Alloc(relocSize+fixupSize);
|
|
|
677 |
if (!iCodeRelocTable)
|
|
|
678 |
return KErrNoMemory;
|
|
|
679 |
iImportFixupTable = iCodeRelocTable + relocSize;
|
|
|
680 |
kumemget32(iCodeRelocTable, aInfo.iCodeRelocTable, relocSize);
|
|
|
681 |
kumemget32(iImportFixupTable, aInfo.iImportFixupTable, fixupSize);
|
|
|
682 |
|
|
|
683 |
return KErrNone;
|
|
|
684 |
}
|
|
|
685 |
|
|
|
686 |
|
|
|
687 |
void TPagedCodeInfo::ApplyFixups(TLinAddr aBuffer, TUint iIndex)
|
|
|
688 |
{
|
|
|
689 |
// START_PAGING_BENCHMARK;
|
|
|
690 |
|
|
|
691 |
// relocate code...
|
|
|
692 |
if(iCodeRelocTableSize)
|
|
|
693 |
{
|
|
|
694 |
TUint8* codeRelocTable = iCodeRelocTable;
|
|
|
695 |
TUint startOffset = ((TUint32*)codeRelocTable)[iIndex];
|
|
|
696 |
TUint endOffset = ((TUint32*)codeRelocTable)[iIndex+1];
|
|
|
697 |
|
|
|
698 |
__KTRACE_OPT(KPAGING, Kern::Printf("Performing code relocation: start == %x, end == %x", startOffset, endOffset));
|
|
|
699 |
__ASSERT_ALWAYS(startOffset<=endOffset && endOffset<=iCodeRelocTableSize, K::Fault(K::ECodeSegBadFixupTables));
|
|
|
700 |
|
|
|
701 |
const TUint32 codeDelta = iCodeDelta;
|
|
|
702 |
const TUint32 dataDelta = iDataDelta;
|
|
|
703 |
|
|
|
704 |
const TUint16* ptr = (const TUint16*)(codeRelocTable + startOffset);
|
|
|
705 |
const TUint16* end = (const TUint16*)(codeRelocTable + endOffset);
|
|
|
706 |
while(ptr<end)
|
|
|
707 |
{
|
|
|
708 |
TUint16 entry = *ptr++;
|
|
|
709 |
TUint32* addr = (TUint32*)(aBuffer+(entry&0x0fff));
|
|
|
710 |
TUint32 word = *addr;
|
|
|
711 |
#ifdef _DEBUG
|
|
|
712 |
TInt type = entry&0xf000;
|
|
|
713 |
__NK_ASSERT_DEBUG(type==KTextRelocType || type==KDataRelocType);
|
|
|
714 |
#endif
|
|
|
715 |
if(entry<KDataRelocType)
|
|
|
716 |
word += codeDelta;
|
|
|
717 |
else
|
|
|
718 |
word += dataDelta;
|
|
|
719 |
*addr = word;
|
|
|
720 |
}
|
|
|
721 |
}
|
|
|
722 |
|
|
|
723 |
// fixup imports...
|
|
|
724 |
if(iImportFixupTableSize)
|
|
|
725 |
{
|
|
|
726 |
TUint8* importFixupTable = iImportFixupTable;
|
|
|
727 |
TUint startOffset = ((TUint32*)importFixupTable)[iIndex];
|
|
|
728 |
TUint endOffset = ((TUint32*)importFixupTable)[iIndex+1];
|
|
|
729 |
|
|
|
730 |
__KTRACE_OPT(KPAGING, Kern::Printf("Performing import fixup: start == %x, end == %x", startOffset, endOffset));
|
|
|
731 |
__ASSERT_ALWAYS(startOffset<=endOffset && endOffset<=iImportFixupTableSize, K::Fault(K::ECodeSegBadFixupTables));
|
|
|
732 |
|
|
|
733 |
const TUint16* ptr = (const TUint16*)(importFixupTable + startOffset);
|
|
|
734 |
const TUint16* end = (const TUint16*)(importFixupTable + endOffset);
|
|
|
735 |
|
|
|
736 |
while(ptr<end)
|
|
|
737 |
{
|
|
|
738 |
TUint16 offset = *ptr++;
|
|
|
739 |
TUint32 wordLow = *ptr++;
|
|
|
740 |
TUint32 wordHigh = *ptr++;
|
|
|
741 |
TUint32 word = (wordHigh << 16) | wordLow;
|
|
|
742 |
// __KTRACE_OPT(KPAGING, Kern::Printf("DP: Fixup %08x=%08x", iRamInfo.iCodeRunAddr+(page<<KPageShift)+offset, word));
|
|
|
743 |
*(TUint32*)(aBuffer+offset) = word;
|
|
|
744 |
}
|
|
|
745 |
}
|
|
|
746 |
|
|
|
747 |
// END_PAGING_BENCHMARK(DemandPaging::ThePager, EPagingBmFixupCodePage);
|
|
|
748 |
}
|
|
|
749 |
|
|
|
750 |
|