symbols.h File Reference

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Classes
struct	_LOCAL_VARIABLE
struct	_DEBUG_MODULE_SYMBOL_
struct	_DEBUG_MODULE_

Macros
#define	KERNEL_START   (0xc0000000)

Typedefs
typedef struct _LOCAL_VARIABLE	LOCAL_VARIABLE
typedef struct _LOCAL_VARIABLE *	PLOCAL_VARIABLE
typedef struct _DEBUG_MODULE_	DEBUG_MODULE
typedef struct _DEBUG_MODULE_ *	PDEBUG_MODULE

Functions
BOOLEAN	InitFakeKernelModule (void)
BOOLEAN	LoadExports (void)
BOOLEAN	SanityCheckExports (void)
void	UnloadExports (void)
BOOLEAN	ScanExports (const char *pFind, PULONG pValue)
BOOLEAN	ScanExportsByAddress (LPSTR *pFind, ULONG ulValue)
PICE_SYMBOLFILE_HEADER *	LoadSymbols (LPSTR filename)
BOOLEAN	LoadSymbolsFromConfig (BOOLEAN bIgnoreBootParams)
void	UnloadSymbols (void)
BOOLEAN	ReloadSymbols (void)
LPSTR	FindFunctionByAddress (ULONG ulValue, PULONG pulstart, PULONG pulend)
LPSTR	FindSourceLineForAddress (ULONG addr, PULONG pulLineNumber, LPSTR *ppSrcStart, LPSTR *ppSrcEnd, LPSTR *ppFilename)
PLOCAL_VARIABLE	FindLocalsByAddress (ULONG addr)
ULONG	FindFunctionInModuleByName (LPSTR szFunctionname, PDEBUG_MODULE pMod)
PICE_SYMBOLFILE_HEADER *	FindModuleSymbolsByModuleName (LPSTR modname)
BOOLEAN	FindAddressForSourceLine (ULONG ulLineNumber, LPSTR pFilename, PDEBUG_MODULE pMod, PULONG pValue)
ULONG	ConvertDecimalToUlong (LPSTR p)
PDEBUG_MODULE	FindModuleFromAddress (ULONG addr)
PICE_SYMBOLFILE_HEADER *	FindModuleSymbols (ULONG addr)
ULONG	ListSymbolStartingAt (PDEBUG_MODULE pMod, PICE_SYMBOLFILE_HEADER *pSymbols, ULONG index, LPSTR pOutput)
PDEBUG_MODULE	FindModuleByName (LPSTR modname)
void	Evaluate (PICE_SYMBOLFILE_HEADER *pSymbols, LPSTR p)
LONG	ExtractNumber (LPSTR p)
LPSTR	ExtractTypeName (LPSTR p)
PDEBUG_MODULE	IsModuleLoaded (LPSTR p)

Variables
PICE_SYMBOLFILE_HEADER *	apSymbols [32]

Macro Definition Documentation

KERNEL_START

#define KERNEL_START   (0xc0000000)

Definition at line 87 of file symbols.h.

Typedef Documentation

DEBUG_MODULE

typedef struct _DEBUG_MODULE_ DEBUG_MODULE

LOCAL_VARIABLE

typedef struct _LOCAL_VARIABLE LOCAL_VARIABLE

PDEBUG_MODULE

typedef struct _DEBUG_MODULE_ * PDEBUG_MODULE

PLOCAL_VARIABLE

typedef struct _LOCAL_VARIABLE* PLOCAL_VARIABLE

Function Documentation

ConvertDecimalToUlong()

ULONG ConvertDecimalToUlong

(

LPSTR

p

)

Evaluate()

void Evaluate	(	PICE_SYMBOLFILE_HEADER *	pSymbols,
		LPSTR	p
	)

Definition at line 2918 of file symbols.c.

{
    ULONG i;

    PICE_memset(&vr,0,sizeof(vr));
    vr.pSymbols = pSymbols;

    pExpression = p;
    ulIndex=0;
    ulNumStructMembers=0;
    if(Expression(&vr))
    {
        DPRINT((1,"\nOK!\n"));
        DPRINT((1,"value = %x type = %x\n",vr.value,vr.type));
        if(vr.bStructType)
        {
            PICE_sprintf(tempSym,"struct %s %s @ %x\n",vr.type_name,p,vr.address);
            Print(OUTPUT_WINDOW,tempSym);
            for(i=0;i<ulNumStructMembers;i++)
            {
                if(vrStructMembers[i].bArrayType)
                {
                    PICE_sprintf(tempSym,"[%.8X %.8X] %s %s[%u]\n",
                            vrStructMembers[i].address,
                            vrStructMembers[i].size/8,
                            vrStructMembers[i].type_name,
                            vrStructMembers[i].name,
                            vrStructMembers[i].size/8);
                }
                else if(vrStructMembers[i].bPtrType)
                {
                    PICE_sprintf(tempSym,"[%.8X %.8X] %s* %s -> %x (%u)\n",
                            vrStructMembers[i].address,
                            vrStructMembers[i].size/8,
                            vrStructMembers[i].type_name,
                            vrStructMembers[i].name,
                            vrStructMembers[i].value,
                            vrStructMembers[i].value);
                }
                else
                {
                    PICE_sprintf(tempSym,"[%.8X %.8X] %s %s = %x (%u)\n",
                            vrStructMembers[i].address,
                            vrStructMembers[i].size/8,
                            vrStructMembers[i].type_name,
                            vrStructMembers[i].name,
                            vrStructMembers[i].value,
                            vrStructMembers[i].value);
                }
                Print(OUTPUT_WINDOW,tempSym);
            }
        }
        else if(vr.bArrayType)
        {
            Print(OUTPUT_WINDOW,"array\n");
        }
        else
        {
            PICE_sprintf(tempSym,"%s %s @ %x = %x (%u)\n",vr.type_name,p,vr.address,vr.value,vr.value);
            Print(OUTPUT_WINDOW,tempSym);
        }
    }
    else
    {
        DPRINT((1,"\nERROR: code %x\n",vr.error));
    }
}

Referenced by COMMAND_PROTOTYPE(), and DECLARE_INTERFACE_().

ExtractNumber()

LONG ExtractNumber

(

LPSTR

p

)

Definition at line 2436 of file symbols.c.

{
    LONG lMinus = 1,lBase;
    ULONG lNumber = 0;

    DPRINT((0,"ExtractNumber(): %s\n",p));

    if(!IsAddressValid((ULONG)p) )
    {
        DPRINT((1,"ExtractNumber(): [1] invalid page %x hit!\n",p));
        return 0;
    }

    if(*p == '-')
    {
        lMinus = -1;
        p++;
    }

    if(!IsAddressValid((ULONG)p) )
    {
        DPRINT((1,"ExtractNumber(): [2] invalid page %x hit!\n",p));
        return 0;
    }

    if(*p != '0') // non-octal -> decimal number
        lBase = 10;
    else
        lBase = 8;

    if(!IsAddressValid((ULONG)p) )
    {
        DPRINT((1,"ExtractNumber(): [3] invalid page %x hit!\n",p));
        return 0;
    }

    while(PICE_isdigit(*p))
    {
        lNumber *= lBase;
        lNumber += *p-'0';
        p++;
        if(!IsAddressValid((ULONG)p) )
        {
            DPRINT((1,"ExtractNumber(): [4] invalid page %x hit!\n",p));
            return 0;
        }
    }

    return (lNumber*lMinus);
}

Referenced by ConvertTokenToLineNumber(), EvaluateSymbol(), ExtractArray(), ExtractStructMembers(), and ExtractTypeNumber().

ExtractTypeName()

LPSTR ExtractTypeName

(

LPSTR

p

)

Definition at line 2412 of file symbols.c.

{
    static char temp[1024];
    ULONG i;

    DPRINT((1,"ExtractTypeName(%s)\n",p));

    for(i=0;IsAddressValid((ULONG)p) && *p!=0 && *p!=':';i++,p++)
        temp[i] = *p;

    if(!IsAddressValid((ULONG)p) )
    {
        DPRINT((1,"hit invalid page %x!\n",(ULONG)p));
    }

    temp[i]=0;

    return temp;
}

Referenced by EvaluateSymbol(), ExtractArray(), and ExtractStructMembers().

FindAddressForSourceLine()

BOOLEAN FindAddressForSourceLine	(	ULONG	ulLineNumber,
		LPSTR	pFilename,
		PDEBUG_MODULE	pMod,
		PULONG	pValue
	)

Definition at line 1689 of file symbols.c.

{
    ULONG i;
    PSTAB_ENTRY pStab;
    LPSTR pStr,pName;
    int nStabLen;
    int nOffset=0,nNextOffset=0;
    PICE_SYMBOLFILE_HEADER* pSymbols;
    static char szCurrentFunction[256];
    static char szCurrentPath[256];
    ULONG strLen,addr,ulMinValue=0xFFFFFFFF;
    BOOLEAN bFound = FALSE;

    DPRINT((0,"FindAddressForSourceLine(%u,%s,%x)\n",ulLineNumber,pFilename,(ULONG)pMod));

    addr = (ULONG)pMod->BaseAddress;

    pSymbols = FindModuleSymbols(addr);
    if(pSymbols)
    {
        pStab = (PSTAB_ENTRY )((ULONG)pSymbols + pSymbols->ulOffsetToStabs);
        nStabLen = pSymbols->ulSizeOfStabs;
        pStr = (LPSTR)((ULONG)pSymbols + pSymbols->ulOffsetToStabsStrings);

        for(i=0;i<(nStabLen/sizeof(STAB_ENTRY));i++)
        {
            pName = &pStr[pStab->n_strx + nOffset];

            switch(pStab->n_type)
            {
                case N_UNDF:
                    nOffset += nNextOffset;
                    nNextOffset = pStab->n_value;
                    break;
                case N_SO:
                    if((strLen = PICE_strlen(pName)))
                    {
                        if(pName[strLen-1]!='/')
                        {
                            if(PICE_strlen(szCurrentPath))
                            {
                                PICE_strcat(szCurrentPath,pName);
                                DPRINT((0,"changing source file %s\n",szCurrentPath));
                            }
                            else
                            {
                                DPRINT((0,"changing source file %s\n",pName));
                                PICE_strcpy(szCurrentPath,pName);
                            }
                        }
                        else
                            PICE_strcpy(szCurrentPath,pName);
                    }
                    else
                    {
                        szCurrentPath[0]=0;
                    }
                    break;
                case N_SLINE:
                    // if we're in the function we're looking for
                    if(PICE_strcmpi(pFilename,szCurrentPath)==0)
                    {
                        if(pStab->n_desc>=ulLineNumber && (pStab->n_desc-ulLineNumber)<=ulMinValue)
                        {
                            ulMinValue = pStab->n_desc-ulLineNumber;

                            DPRINT((0,"code source line number #%u for offset %x in function @ %s)\n",pStab->n_desc,pStab->n_value,szCurrentFunction));
                            addr = FindFunctionInModuleByName(szCurrentFunction,pMod);
                            if(addr)
                            {
                                *pValue = addr + pStab->n_value;
                                bFound = TRUE;
                            }
                        }
                    }
                    break;
                case N_FUN:
                    if(PICE_strlen(pName))
                    {
                        ULONG len;

                        len=StrLenUpToWhiteChar(pName,":");
                        PICE_strncpy(szCurrentFunction,pName,len);
                        szCurrentFunction[len]=0;
                        DPRINT((0,"function %s\n",szCurrentFunction));
                    }
                    else
                    {
                        DPRINT((0,"END of function %s\n",szCurrentFunction));
                        szCurrentFunction[0]=0;
                    }
                    break;
            }
            pStab++;
        }
    }
    return bFound;
}

Referenced by ConvertTokenToLineNumber().

FindFunctionByAddress()

LPSTR FindFunctionByAddress	(	ULONG	ulValue,
		PULONG	pulstart,
		PULONG	pulend
	)

Definition at line 767 of file symbols.c.

{
    PIMAGE_SYMBOL pSym, pSymEnd, pFoundSym;
    LPSTR pStr;
    PIMAGE_SECTION_HEADER pShdr;
    PDEBUG_MODULE pd;
    PDEBUG_MODULE pdTemp;
    PICE_SYMBOLFILE_HEADER* pSymbols;
    ULONG start,end;
    static char temp4[256];
    LPSTR pName;

    pSymbols = FindModuleSymbols(ulValue);
    DPRINT((0,"FindFunctionByAddress(): symbols for %S @ %x \n",pSymbols->name,(ULONG)pSymbols));
    if(pSymbols && pdebug_module_head)
    {
        DPRINT((0,"looking up symbol\n"));
        pd = pdebug_module_head;
        do
        {
            ASSERT(pd->size);
            pdTemp = pd;

            //initial values for start and end.
            start = (ULONG)pdTemp->BaseAddress;
            end = start+pdTemp->size;

            DPRINT((0,"FindFunctionByAddress(): ulValue %x\n",ulValue));

            if(ulValue>=start && ulValue<end)
            {
                DPRINT((0,"FindFunctionByAddress(): address matches %S\n",(ULONG)pdTemp->name));
                if(PICE_wcsicmp(pdTemp->name,pSymbols->name) == 0)
                {
                    DPRINT((0,"found symbols for module %S\n",pdTemp->name));
                    pSym = (PIMAGE_SYMBOL)((ULONG)pSymbols+pSymbols->ulOffsetToGlobals);
                    pSymEnd = (PIMAGE_SYMBOL)((ULONG)pSym+pSymbols->ulSizeOfGlobals);
                    pStr = (LPSTR)((ULONG)pSymbols+pSymbols->ulOffsetToGlobalsStrings);
                    pShdr = (PIMAGE_SECTION_HEADER)((ULONG)pSymbols+pSymbols->ulOffsetToHeaders);

                    if(!IsRangeValid((ULONG)pSym,sizeof(IMAGE_SYMBOL) ) ) //should we actually check all the symbols here?
                    {
                        DPRINT((0,"FindFunctionByAddress(): pSym = %x is not a valid pointer\n",(ULONG)pSym));
                        return FALSE;
                    }
                    DPRINT((0,"pSym = %x\n",pSym));
                    DPRINT((0,"pStr = %x\n",pStr));
                    DPRINT((0,"pShdr = %x\n",pShdr));

                    while( pSym < pSymEnd )
                    {
                        //symbol is a function is it's type is 0x20, and section>0
                        if(( (pSym->Type == 0x20) &&
                           (pSym->SectionNumber > 0 )))
                        {
                            ULONG ulCurrAddr;
                            PIMAGE_SECTION_HEADER pShdrThis = (PIMAGE_SECTION_HEADER)pShdr + (pSym->SectionNumber-1);

                            DPRINT((0,"FindFunctionByAddress(): pShdr[%x] = %x\n",pSym->SectionNumber,(ULONG)pShdrThis));

                            if(!IsRangeValid((ULONG)pShdrThis,sizeof(IMAGE_SECTION_HEADER)) )
                            {
                                DPRINT((0,"ScanExportsByAddress(): pElfShdr[%x] = %x is not a valid pointer\n",pSym->SectionNumber,(ULONG)pShdrThis));
                                return FALSE;
                            }
                            //to get address in the memory we base address of the module and
                            //add offset of the section and then add offset of the symbol from
                            //the begining of the section
                            ulCurrAddr = ((ULONG)pdTemp->BaseAddress+pShdrThis->VirtualAddress+pSym->Value);
                            DPRINT((0,"FindFunctionByAddress(): CurrAddr [1] = %x\n",ulCurrAddr));
                            DPRINT((0,"%x  ", ulCurrAddr));

                            if(ulCurrAddr<=ulValue && ulCurrAddr>start)
                            {
                                start = ulCurrAddr;
                                pFoundSym = pSym;
                                //DPRINT((0,"FindFunctionByAddress(): CANDIDATE for start %x\n",start));
                            }
                            else if(ulCurrAddr>=ulValue && ulCurrAddr<end)
                                 {
                                   end = ulCurrAddr;
                                   //DPRINT((0,"FindFunctionByAddress(): CANDIDATE for end %x\n",end));
                                 }
                            }
                            //skip the auxiliary symbols and get the next symbol
                            pSym += pSym->NumberOfAuxSymbols + 1;
                        }
                        //we went through all the symbols for this module
                        //now start should point to the start of the function and
                        //end to the start of the next (or end of section)
                        if(pulstart)
                            *pulstart = start;

                        if(pulend){
                            //just in case there is more than  one code section
                            PIMAGE_SECTION_HEADER pShdrThis = (PIMAGE_SECTION_HEADER)pShdr + (pFoundSym->SectionNumber-1);
                            if( end > (ULONG)pdTemp->BaseAddress+pShdrThis->SizeOfRawData ){
                                DPRINT((0,"Hmm: end=%d, end of section: %d\n", end, (ULONG)pdTemp->BaseAddress+pShdrThis->SizeOfRawData));
                                end = (ULONG)pdTemp->BaseAddress+pShdrThis->SizeOfRawData;
                            }
                            *pulend = end;
                        }

                        if(pFoundSym->N.Name.Short){
                            //name is in the header. it's not zero terminated. have to copy.
                            PICE_sprintf(temp4,"%.8s", pFoundSym->N.ShortName);
                            pName = temp4;
                            DPRINT((0,"Function name: %S!%.8s",pdTemp->name,pName));
                        }
                        else{
                            ASSERT(pFoundSym->N.Name.Long<=pSymbols->ulSizeOfGlobalsStrings); //sanity check
                            pName = pStr+pFoundSym->N.Name.Long;
                            if(!IsAddressValid((ULONG)pName))
                            {
                                DPRINT((0,"FindFunctionByAddress(): pName = %x is not a valid pointer\n",pName));
                                return NULL;
                            }
                            DPRINT((0,"Function name: %S!%s",pdTemp->name,pName));
                        }
                        return pName;
                    }
                }
        }while((pd = pd->next) != pdebug_module_tail);
    }
    return NULL;
}

Referenced by COMMAND_PROTOTYPE(), FindLocalsByAddress(), FindSourceLineForAddress(), IntelStackWalk(), ListSWBreakpoints(), UnassembleOneLineUp(), and UnassembleOnePageUp().

FindFunctionInModuleByName()

ULONG FindFunctionInModuleByName	(	LPSTR	szFunctionname,
		PDEBUG_MODULE	pMod
	)

Definition at line 955 of file symbols.c.

{
    ULONG i,addr;
    PICE_SYMBOLFILE_HEADER* pSymbols=NULL;
    PIMAGE_SYMBOL pSym, pSymEnd;
    LPSTR pStr;
    PIMAGE_SECTION_HEADER pShdr;

    ENTER_FUNC();
    DPRINT((0,"FindFunctionInModuleByName(%s)\n",szFunctionname));
    DPRINT((0,"FindFunctionInModuleByName(): mod size = %x\n",pd->size));
    DPRINT((0,"FindFunctionInModuleByName(): module is %S\n",pd->name));

    addr = (ULONG)pd->BaseAddress;

    pSymbols = FindModuleSymbols(addr);
    if(pSymbols)
    {
        DPRINT((0,"FindFunctionInModuleByName(): found symbol table for %S\n",pSymbols->name));
        pSym = (PIMAGE_SYMBOL)((ULONG)pSymbols+pSymbols->ulOffsetToGlobals);
        pSymEnd = (PIMAGE_SYMBOL)((ULONG)pSym+pSymbols->ulSizeOfGlobals);
        pStr = (LPSTR)((ULONG)pSymbols+pSymbols->ulOffsetToGlobalsStrings);
        pShdr = (PIMAGE_SECTION_HEADER)((ULONG)pSymbols+pSymbols->ulOffsetToHeaders);

        while( pSym < pSymEnd )
        {
            //symbol is a function is it's type is 0x20, storage class is external and section>0
            //if(( (pSym->Type == 0x20)  && (pSym->StorageClass==IMAGE_SYM_CLASS_EXTERNAL) &&
            //   (pSym->SectionNumber > 0 )))

            if(((pSym->Type == 0x0) || (pSym->Type == 0x20) )  &&
               ((pSym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) || (pSym->StorageClass==IMAGE_SYM_CLASS_STATIC)) &&
               (pSym->SectionNumber > 0 ))

            {
                ULONG start;
                LPSTR pName;
                PIMAGE_SECTION_HEADER pShdrThis = (PIMAGE_SECTION_HEADER)pShdr + (pSym->SectionNumber-1);

                start = ((ULONG)pd->BaseAddress+pShdrThis->VirtualAddress+pSym->Value);
                DPRINT((0,"FindFunctionInModuleByName(): %s @ %x\n",szFunctionname,start));

                if(pSym->N.Name.Short){ //if name is stored in the structure
                    //name may be not zero terminated but 8 characters max
                    DPRINT((0,"FindFunctionInModuleByName: %.8s\n", pSym->N.ShortName));
                    pName = pSym->N.ShortName;  //name is in the header
                    if((PICE_fnncmp(pName,szFunctionname, 8) == 0) && start)
                    {
                        DPRINT((0,"FindFunctionInModuleByName(): symbol was in symbol table, start: %x\n", start));
                        LEAVE_FUNC();
                        return start;
                    }
                }else{
                    pName = pStr+pSym->N.Name.Long;
                    DPRINT((0,"FindFunctionInModuleByName: %s\n", pName));
                    if((PICE_fncmp(pName,szFunctionname) == 0) && start)
                    {
                        DPRINT((0,"FindFunctionInModuleByName(): symbol was in string table, start: %x\n", start));
                        LEAVE_FUNC();
                        return start;
                    }
                }
            }
            //skip the auxiliary symbols and get the next symbol
            pSym += pSym->NumberOfAuxSymbols + 1;
        }
    }
    LEAVE_FUNC();
    return 0;
}

Referenced by ConvertTokenToSymbol(), FindAddressForSourceLine(), FindGlobalStabSymbol(), RevirtualizeBreakpointsForModule(), and TryToInstallVirtualSWBreakpoints().

FindLocalsByAddress()

PLOCAL_VARIABLE FindLocalsByAddress

(

ULONG

addr

)

Definition at line 1317 of file symbols.c.

{
    ULONG i;
    PSTAB_ENTRY pStab;
    LPSTR pStr,pName;
    int nStabLen;
    int nOffset=0,nNextOffset=0;
    PICE_SYMBOLFILE_HEADER* pSymbols;
    static char szCurrentFunction[256];
    static char szCurrentPath[256];
    LPSTR pFunctionName;
    ULONG start,end,strLen;
    ULONG ulTypeNumber,ulCurrentFileNumber=0;
    LPSTR pTypedef;
    ULONG ulNumLocalVars=0;

    DPRINT((0,"FindLocalsByAddress()\n"));

    pFunctionName = FindFunctionByAddress(addr,&start,&end);
    DPRINT((0,"FindLocalsByAddress(): pFunctionName = %s\n",pFunctionName));
    if(pFunctionName)
    {
        pSymbols = FindModuleSymbols(addr);
        if(pSymbols)
        {
            pStab = (PSTAB_ENTRY )((ULONG)pSymbols + pSymbols->ulOffsetToStabs);
            nStabLen = pSymbols->ulSizeOfStabs;
            pStr = (LPSTR)((ULONG)pSymbols + pSymbols->ulOffsetToStabsStrings);

            for(i=0;i<(nStabLen/sizeof(STAB_ENTRY));i++)
            {
                pName = &pStr[pStab->n_strx + nOffset];

                DPRINT((0,"FindLocalsByAddress(): %x %x %x %x %x\n",
                        pStab->n_strx,
                        pStab->n_type,
                        pStab->n_other,
                        pStab->n_desc,
                        pStab->n_value));

                switch(pStab->n_type)
                {
                    case N_UNDF:
                        nOffset += nNextOffset;
                        nNextOffset = pStab->n_value;
                        break;
                    case N_SO:
                        if((strLen = PICE_strlen(pName)))
                        {
                            if(pName[strLen-1]!='/')
                            {
                                ulCurrentFileNumber++;
                                if(PICE_strlen(szCurrentPath))
                                {
                                    PICE_strcat(szCurrentPath,pName);
                                    DPRINT((0,"changing source file1 %s, %u\n",szCurrentPath,ulCurrentFileNumber));
                                }
                                else
                                {
                                    DPRINT((0,"changing source file %s, %u\n",pName,ulCurrentFileNumber));
                                }
                            }
                            else
                                PICE_strcpy(szCurrentPath,pName);
                        }
                        else
                        {
                            szCurrentPath[0]=0;
                        }
                        break;
                    case N_LSYM:
                        // if we're in the function we're looking for
                        if(szCurrentFunction[0] && PICE_fncmp(szCurrentFunction,pFunctionName)==0)
                        {
                            DPRINT((0,"local variable1 %.8X %.8X %.8X %.8X %.8X %s\n",pStab->n_strx,pStab->n_type,pStab->n_other,pStab->n_desc,pStab->n_value,pName));
                            ulTypeNumber = ExtractTypeNumber(pName);
                            DPRINT((0,"type number = %u\n",ulTypeNumber));
                            if((pTypedef = FindTypeDefinition(pSymbols,ulTypeNumber,ulCurrentFileNumber)))
                            {
                                DPRINT((0,"pTypedef: %x\n", pTypedef));
                                PICE_strcpy(local_vars[ulNumLocalVars].type_name,TruncateString(pTypedef,':'));
                                PICE_strcpy(local_vars[ulNumLocalVars].name,TruncateString(pName,':'));
                                local_vars[ulNumLocalVars].value = (CurrentEBP+pStab->n_value);
                                local_vars[ulNumLocalVars].offset = pStab->n_value;
                                local_vars[ulNumLocalVars].line = pStab->n_desc;
                                local_vars[ulNumLocalVars].bRegister = FALSE;
                                ulNumLocalVars++;
                            }
                        }
                        break;
                    case N_PSYM:
                        // if we're in the function we're looking for
                        if(szCurrentFunction[0] && PICE_fncmp(szCurrentFunction,pFunctionName)==0)
                        {
                            DPRINT((0,"parameter variable %.8X %.8X %.8X %.8X %.8X %s\n",pStab->n_strx,pStab->n_type,pStab->n_other,pStab->n_desc,pStab->n_value,pName));
                            ulTypeNumber = ExtractTypeNumber(pName);
                            DPRINT((0,"type number = %x\n",ulTypeNumber));
                            if((pTypedef = FindTypeDefinition(pSymbols,ulTypeNumber,ulCurrentFileNumber)))
                            {
                                PICE_strcpy(local_vars[ulNumLocalVars].type_name,TruncateString(pTypedef,':'));
                                PICE_strcpy(local_vars[ulNumLocalVars].name,TruncateString(pName,':'));
                                local_vars[ulNumLocalVars].value = (CurrentEBP+pStab->n_value);
                                local_vars[ulNumLocalVars].offset = pStab->n_value;
                                ulNumLocalVars++;
                            }
                        }
                        break;
                    case N_RSYM:
                        // if we're in the function we're looking for
                        if(szCurrentFunction[0] && PICE_fncmp(szCurrentFunction,pFunctionName)==0)
                        {
                            DPRINT((0,"local variable2 %.8X %.8X %.8X %.8X %.8X %s\n",pStab->n_strx,pStab->n_type,pStab->n_other,pStab->n_desc,pStab->n_value,pName));
                            ulTypeNumber = ExtractTypeNumber(pName);
                            DPRINT((0,"type number = %x\n",ulTypeNumber));
                            if((pTypedef = FindTypeDefinition(pSymbols,ulTypeNumber,ulCurrentFileNumber)))
                            {
                                PICE_strcpy(local_vars[ulNumLocalVars].type_name,TruncateString(pTypedef,':'));
                                PICE_strcpy(local_vars[ulNumLocalVars].name,TruncateString(pName,':'));
                                local_vars[ulNumLocalVars].value = (LocalRegs[pStab->n_value]);
                                local_vars[ulNumLocalVars].offset = pStab->n_value;
                                local_vars[ulNumLocalVars].line = pStab->n_desc;
                                local_vars[ulNumLocalVars].bRegister = TRUE;
                                ulNumLocalVars++;
                            }
                        }
                        break;
                    case N_FUN:
                        if(PICE_strlen(pName))
                        {
                            ULONG len;

                            len=StrLenUpToWhiteChar(pName,":");
                            PICE_strncpy(szCurrentFunction,pName,len);
                            szCurrentFunction[len]=0;
                            DPRINT((0,"function %s\n",szCurrentFunction));
                        }
                        else
                        {
                            DPRINT((0,"END of function %s\n",szCurrentFunction));
                            szCurrentFunction[0]=0;
                            if(ulNumLocalVars)
                            {
                                *local_vars[ulNumLocalVars].name = 0;
                                return local_vars;
                            }
                        }
                        break;
                }
                pStab++;
            }
        }
    }
    return NULL;
}

Referenced by COMMAND_PROTOTYPE().

FindModuleByName()

PDEBUG_MODULE FindModuleByName

(

LPSTR

modname

)

Definition at line 539 of file symbols.c.

{
    PDEBUG_MODULE pd;
    WCHAR tempstr[DEBUG_MODULE_NAME_LEN];

    DPRINT((0,"FindModuleFromAddress()\n"));
    if( !PICE_MultiByteToWideChar(CP_ACP, NULL, modname, -1, tempstr, DEBUG_MODULE_NAME_LEN ) )
    {
        DPRINT((0,"Can't convert module name.\n"));
        return NULL;
    }

    if(BuildModuleList())
    {
        pd = pdebug_module_head;
        do
        {
            if(pd->size)
            {
                if(PICE_wcsicmp(tempstr,pd->name) == 0)
                {
                    DPRINT((0,"FindModuleByName(): found %S\n",pd->name));
                    return pd;
                }
            }
        }while((pd = pd->next) != pdebug_module_tail);
    }

    return NULL;
}

FindModuleFromAddress()

PDEBUG_MODULE FindModuleFromAddress

(

ULONG

addr

)

Definition at line 507 of file symbols.c.

{
    PDEBUG_MODULE pd;
    ULONG start,end;

    DPRINT((0,"FindModuleFromAddress()\n"));
    if(BuildModuleList())
    {
        pd = pdebug_module_head;
        do
        {
            if(pd->size)
            {
                start = (ULONG)pd->BaseAddress;
                end = start + pd->size;
                DPRINT((0,"FindModuleFromAddress(): %S %x-%x\n",pd->name,start,end));
                if(addr>=start && addr<end)
                {
                    DPRINT((0,"FindModuleFromAddress(): found %S\n",pd->name));
                    return pd;
                }
            }
        }while((pd = pd->next)!=pdebug_module_tail);
    }

    return NULL;
}

Referenced by COMMAND_PROTOTYPE(), and ListSWBreakpoints().

FindModuleSymbols()

PICE_SYMBOLFILE_HEADER* FindModuleSymbols

(

ULONG

addr

)

Definition at line 463 of file symbols.c.

{
    ULONG start,end,i;
    PDEBUG_MODULE pd = pdebug_module_head;

    DPRINT((0,"FindModuleSymbols(%x)\n",addr));
    if(BuildModuleList())
    {
        i=0;
        pd = pdebug_module_head;
        do
        {
            DPRINT((0,"pd: %x\n", pd));
            if(pd->size)
            {
                start = (ULONG)pd->BaseAddress;
                end = start + pd->size;
                DPRINT((0,"FindModuleSymbols(): %S %x-%x\n",pd->name,start,end));
                if(addr>=start && addr<end)
                {
                    DPRINT((0,"FindModuleSymbols(): address matches %S %x-%x\n",pd->name,start,end));
                    for(i=0;i<ulNumSymbolsLoaded;i++)
                    {
                        DPRINT((0,"%S -", apSymbols[i]->name ));
                        if(PICE_wcsicmp(pd->name,apSymbols[i]->name) == 0)
                        {
                            if(ValidityCheckSymbols(apSymbols[i]))
                                return apSymbols[i];
                            else
                                return NULL;
                        }
                    }
                }
            }
        }while((pd = pd->next) != pdebug_module_tail);
    }

    return NULL;
}

Referenced by COMMAND_PROTOTYPE(), FindAddressForSourceLine(), FindFunctionByAddress(), FindFunctionInModuleByName(), FindGlobalStabSymbol(), FindLocalsByAddress(), FindSourceLineForAddress(), and ScanExportsByAddress().

FindModuleSymbolsByModuleName()

PICE_SYMBOLFILE_HEADER* FindModuleSymbolsByModuleName

(

LPSTR

modname

)

Definition at line 574 of file symbols.c.

{
    ULONG i;
    WCHAR tempstr[DEBUG_MODULE_NAME_LEN];

    DPRINT((0,"FindModuleSymbols()\n"));
    if( !PICE_MultiByteToWideChar(CP_ACP, NULL, modname, -1, tempstr, DEBUG_MODULE_NAME_LEN ) )
    {
        DPRINT((0,"Can't convert module name in FindModuleSymbols.\n"));
        return NULL;
    }

    for(i=0;i<ulNumSymbolsLoaded;i++)
    {
        if(PICE_wcsicmp(tempstr,apSymbols[i]->name) == 0)
            return apSymbols[i];
    }

    return NULL;
}

FindSourceLineForAddress()

LPSTR FindSourceLineForAddress	(	ULONG	addr,
		PULONG	pulLineNumber,
		LPSTR *	ppSrcStart,
		LPSTR *	ppSrcEnd,
		LPSTR *	ppFilename
	)

Definition at line 1476 of file symbols.c.

{
    ULONG i; // index for walking through STABS
    PSTAB_ENTRY pStab; // pointer to STABS
    LPSTR pStr,pName; // pointer to STAB strings and current STAB string
    int nStabLen;     // length of STAB section in bytes
    int nOffset=0,nNextOffset=0;    // offset and next offset in string table
    PICE_SYMBOLFILE_HEADER* pSymbols;   // pointer to module's STAB symbol table
    static char szCurrentFunction[256];
    static char szCurrentPath[256];
    static char szWantedPath[256];
    LPSTR pFunctionName; // name of function that brackets the current address
    ULONG start,end,strLen,ulMinValue=0xFFFFFFFF;
    LPSTR pSrcLine=NULL;
    BOOLEAN bFirstOccurence = TRUE;

    // lookup the functions name and start-end (external symbols)
    pFunctionName = FindFunctionByAddress(addr,&start,&end);
    DPRINT((0,"FindSourceLineForAddress: for function: %s\n", pFunctionName));

    if(pFunctionName)
    {
        // lookup the modules symbol table (STABS)
        pSymbols = FindModuleSymbols(addr);
        DPRINT((0,"FindSourceLineForAddress: pSymbols %x\n", pSymbols));
        if(pSymbols)
        {
            DPRINT((0,"FindSourceLineForAddress: pSymbols->ulNumberOfSrcFiles %x\n", pSymbols->ulNumberOfSrcFiles));
            // no source files so we don't need to lookup anything
            if(!pSymbols->ulNumberOfSrcFiles)
                return NULL;

            // prepare STABS access
            pStab = (PSTAB_ENTRY )((ULONG)pSymbols + pSymbols->ulOffsetToStabs);
            nStabLen = pSymbols->ulSizeOfStabs;
            pStr = (LPSTR)((ULONG)pSymbols + pSymbols->ulOffsetToStabsStrings);

            // walk over all STABS
            for(i=0;i<(nStabLen/sizeof(STAB_ENTRY));i++)
            {
                // the name string corresponding to the STAB
                pName = &pStr[pStab->n_strx + nOffset];

                // switch STAB type
                switch(pStab->n_type)
                {
                    // change offset of name strings
                    case N_UNDF:
                        nOffset += nNextOffset;
                        nNextOffset = pStab->n_value;
                        break;
                    // source file change
                    case N_SO:
                        DPRINT((0,"changing source file %s\n",pName));
                        // if filename has a length record it
                        if((strLen = PICE_strlen(pName)))
                        {
                            PICE_strcpy(szCurrentPath,pName);
                        }
                        // else empty filename
                        else
                        {
                            szCurrentPath[0]=0;
                        }
                        break;
                    // sub-source file change
                    case N_SOL:
                        DPRINT((0,"changing sub source file %s\n",pName));
                        // if filename has a length record it
                        if((strLen = PICE_strlen(pName)))
                        {
                            PICE_strcpy(szCurrentPath,pName);
                        }
                        // else empty filename
                        else
                        {
                            szCurrentPath[0]=0;
                        }
                        break;
                    // a function symbol
                    case N_FUN:
                        if(!PICE_strlen(pName))
                        {// it's the end of a function
                            DPRINT((0,"END of function %s\n",szCurrentFunction));

                            szCurrentFunction[0]=0;

                            // in case we haven't had a zero delta match we return from here
                            if(pSrcLine)
                                return pSrcLine;

                            break;
                        }
                        else
                        {// if it has a length it's the start of a function
                            ULONG len;
                            // extract the name only, the type string is of no use here
                            len=StrLenUpToWhiteChar(pName,":");
                            PICE_strncpy(szCurrentFunction,pName,len);
                            szCurrentFunction[len]=0;

                            DPRINT((0,"function %s\n",szCurrentFunction));
                        }
                        //intentional fall through

                    // line number
                    case N_SLINE:
                        // if we're in the function we're looking for
                        if(szCurrentFunction[0] && PICE_fncmp(szCurrentFunction,pFunctionName)==0)
                        {
                            DPRINT((0,"cslnum#%u for addr.%x (fn @ %x) ulMinVal=%x ulDelta=%x\n",pStab->n_desc,start+pStab->n_value,start,ulMinValue,(addr-(start+pStab->n_value))));

                            if(bFirstOccurence)
                            {
                                PICE_strcpy(szWantedPath,szCurrentPath);
                                DPRINT((0,"source file must be %s\n",szWantedPath));
                                bFirstOccurence = FALSE;
                            }
                            DPRINT((0,"wanted %s, current: %s\n",szWantedPath, szCurrentPath));
                            // we might have a match if our address is greater than the one in the STAB
                            // and we're lower or equal than minimum value
                            if(addr>=start+pStab->n_value &&
                               (addr-(start+pStab->n_value))<=ulMinValue &&
                               PICE_strcmpi(szWantedPath,szCurrentPath)==0 )
                            {
                                ULONG j;
                                PICE_SYMBOLFILE_SOURCE* pSrc = (PICE_SYMBOLFILE_SOURCE*)((ULONG)pSymbols+pSymbols->ulOffsetToSrcFiles);

                                DPRINT((0,"code source line number #%u for addr. %x found!\n",pStab->n_desc,start+pStab->n_value));

                                // compute new minimum
                                ulMinValue = addr-(start+pStab->n_value);

                                // if we have a pointer for storage of line number, store it
                                if(pulLineNumber)
                                    *pulLineNumber = pStab->n_desc;

                                // NB: should put this somewhere else so that it's not done all the time
                                // if we have source files at all
                                DPRINT((0,"%u source files @ %x\n",pSymbols->ulNumberOfSrcFiles,pSrc));

                                // for all source files in this module
                                for(j=0;j<pSymbols->ulNumberOfSrcFiles;j++)
                                {
                                    LPSTR pSlash;
                                    ULONG currlen, fnamelen;

                                    currlen = PICE_strlen( szCurrentPath );
                                    fnamelen = PICE_strlen( pSrc->filename );
                                    pSlash = pSrc->filename + fnamelen - currlen;

                                    //DPRINT((0,"pSlash: %s, szCurrentPath: %s\n", pSlash, szCurrentPath));
                                    // if base name matches current path we have found the correct source file
                                    if(PICE_strcmpi(pSlash,szCurrentPath)==0)
                                    {
                                        // the linenumber
                                        ULONG k = pStab->n_desc;

                                        DPRINT((0,"found src file %s @ %x\n",pSrc->filename,pSrc));

                                        // store the pointer to the filename
                                        if(ppFilename)
                                            *ppFilename = pSrc->filename;

                                        if(pSrc->ulOffsetToNext > sizeof(PICE_SYMBOLFILE_SOURCE))
                                        {
                                            // get a pointer to the source file (right after the file header)
                                            pSrcLine = (LPSTR)((ULONG)pSrc+sizeof(PICE_SYMBOLFILE_SOURCE));

                                            // store the source start and end address
                                            if(ppSrcStart)
                                                *ppSrcStart = pSrcLine;
                                            if(ppSrcEnd)
                                                *ppSrcEnd = pSrcLine+pSrc->ulOffsetToNext-sizeof(PICE_SYMBOLFILE_SOURCE);

                                            // goto to the right line
                                            while(--k)
                                            {
                                                while(*pSrcLine!=0 && *pSrcLine!=0x0a && *pSrcLine!=0x0d)
                                                    pSrcLine++;
                                                if(!IsAddressValid((ULONG)pSrcLine))
                                                    return NULL;
                                                pSrcLine++;
                                            }

                                            if(ulMinValue == 0)
                                                return pSrcLine;
                                        }
                                        else
                                        {
                                            DPRINT((0,"src file descriptor found, but contains no source\n"));
                                        }

                                        break;
                                    }
                                    (ULONG)pSrc += pSrc->ulOffsetToNext;
                                }
                            }
                        }
                        break;
                }
                pStab++;
            }
        }
    }
    DPRINT((0,"FindSourceLineForAddress: exit 1\n"));
    return NULL;
}

Referenced by COMMAND_PROTOTYPE(), and RealIsr().

InitFakeKernelModule()

BOOLEAN InitFakeKernelModule

(

void

)

IsModuleLoaded()

PDEBUG_MODULE IsModuleLoaded

(

LPSTR

p

)

Definition at line 296 of file symbols.c.

{
    PDEBUG_MODULE pd;

    ENTER_FUNC();
    DPRINT((0,"IsModuleLoaded(%s)\n",p));

    if(BuildModuleList())
    {
        pd = pdebug_module_head;
        do
        {
            char temp[DEBUG_MODULE_NAME_LEN];
            DPRINT((0,"module (%x) %S\n",pd->size,pd->name));
            CopyWideToAnsi(temp,pd->name);
            if(pd->size && PICE_strcmpi(p,temp) == 0)
            {
                DPRINT((0,"module %S is loaded!\n",pd->name));
                LEAVE_FUNC();
                return pd;
            }
        }while((pd = pd->next)!=pdebug_module_tail);
    }
    LEAVE_FUNC();
    return NULL;
}

Referenced by COMMAND_PROTOTYPE(), ConvertTokenToSymbol(), and TryToInstallVirtualSWBreakpoints().

ListSymbolStartingAt()

ULONG ListSymbolStartingAt	(	PDEBUG_MODULE	pMod,
		PICE_SYMBOLFILE_HEADER *	pSymbols,
		ULONG	index,
		LPSTR	pOutput
	)

Definition at line 1792 of file symbols.c.

{
    PIMAGE_SYMBOL pSym, pSymEnd;
    LPSTR pStr;
    PIMAGE_SECTION_HEADER pShdr;

    DPRINT((0,"ListSymbolStartingAt(%x,%u)\n",(ULONG)pSymbols,index));
    DPRINT((0,"ListSymbolStartingAt(): ulOffsetToGlobals = %x ulSizeofGlobals = %x\n",pSymbols->ulOffsetToGlobals,pSymbols->ulSizeOfGlobals));
    pSym = (PIMAGE_SYMBOL)((ULONG)pSymbols+pSymbols->ulOffsetToGlobals);
    pSymEnd = (PIMAGE_SYMBOL)((ULONG)pSym+pSymbols->ulSizeOfGlobals);
    pStr = (LPSTR)((ULONG)pSymbols+pSymbols->ulOffsetToGlobalsStrings);
    pShdr = (PIMAGE_SECTION_HEADER)((ULONG)pSymbols+pSymbols->ulOffsetToHeaders);

    pSym += index;

    while( pSym < pSymEnd )
    {
        LPSTR pName;

        if(((pSym->Type == 0x0) || (pSym->Type == 0x20) )  &&
           ((pSym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) /*|| (pSym->StorageClass==IMAGE_SYM_CLASS_STATIC)*/) &&
           (pSym->SectionNumber > 0 ))
        {
            PIMAGE_SECTION_HEADER pShdrThis = (PIMAGE_SECTION_HEADER)pShdr + (pSym->SectionNumber-1);
            ULONG section_flags;
            ULONG start;

            DPRINT((0,"ListSymbolStartingAt(): pShdr[%x] = %x\n",pSym->SectionNumber,(ULONG)pShdrThis));

            if(!IsRangeValid((ULONG)pShdrThis,sizeof(IMAGE_SECTION_HEADER)) )
            {
                DPRINT((0,"ListSymbolStartingAt(): pShdr[%x] = %x is not a valid pointer\n",pSym->SectionNumber,(ULONG)pShdrThis));
                return FALSE;
            }
            section_flags = pShdrThis->Characteristics;
            //to get address in the memory we base address of the module and
            //add offset of the section and then add offset of the symbol from
            //the begining of the section

            start = ((ULONG)pMod->BaseAddress+pShdrThis->VirtualAddress+pSym->Value);
            if(pSym->N.Name.Short){
                //name is in the header. it's not zero terminated. have to copy.
                PICE_sprintf(pOutput,"%.8X (%s) %.8s\n",start,(section_flags&IMAGE_SCN_CNT_CODE)?"TEXT":"DATA",pSym->N.ShortName);
            }
            else{
                ASSERT(pSym->N.Name.Long<=pSymbols->ulSizeOfGlobalsStrings); //sanity check
                pName = pStr+pSym->N.Name.Long;
                if(!IsAddressValid((ULONG)pName))
                {
                    DPRINT((0,"ListSymbolStartingAt(): pName = %x is not a valid pointer\n",pName));
                    return 0;
                }
                PICE_sprintf(pOutput,"%.8X (%s) %s\n",start,(section_flags&IMAGE_SCN_CNT_CODE)?"TEXT":"DATA",pName);
            }

            if((pSym+pSym->NumberOfAuxSymbols+1)<(pSymEnd))
                return (index+pSym->NumberOfAuxSymbols+1);
        }
        index += pSym->NumberOfAuxSymbols + 1;
        pSym += pSym->NumberOfAuxSymbols + 1;
    }
    return 0;
}

Referenced by COMMAND_PROTOTYPE().

LoadExports()

BOOLEAN LoadExports

(

void

)

Definition at line 1909 of file symbols.c.

{
    HANDLE hf;
    BOOLEAN bResult = TRUE;

    ENTER_FUNC();

    Print(OUTPUT_WINDOW,"pICE: loading exports...\n");
    hf = PICE_open(L"\\SystemRoot\\symbols\\ntoskrnl.map",OF_READ);
    /*
    if(hf)
    {
        Print(OUTPUT_WINDOW,"pICE: no System.map in /boot\n");
        hf = PICE_open("/System.map",OF_READ);
    }
    */

    if(hf)
    {
        //mm_segment_t oldfs;
        size_t len;

        len = PICE_len(hf);
        if(len)
        {
            DPRINT((0,"file len = %d\n",len));

            pExports = PICE_malloc(len+1,NONPAGEDPOOL);  // maybe make pool setting an option

            DPRINT((0,"pExports = %x\n",pExports));

            if(pExports)
            {
                //oldfs = get_fs(); set_fs(KERNEL_DS);
                ulExportLen = len;
                ((PUCHAR)pExports)[len]=0;
                if(len == PICE_read(hf,pExports,len))
                {
                    DPRINT((0,"success reading system map!\n"));
                    PICE_sprintf(tempSym,"pICE: ntoskrnl.sym @ %x (size %x)\n",pExports,len);
                    Print(OUTPUT_WINDOW,tempSym);
                }
                else
                    DbgPrint("error reading ntoskrnl map!\n");
                //set_fs(oldfs);
            }
        }
        PICE_close(hf);
    }
    else
    {
        Print(OUTPUT_WINDOW,"pICE: no ntoskrnl.sys \n");
        Print(OUTPUT_WINDOW,"pICE: could not load exports...\n");
        bResult = FALSE;
    }

    LEAVE_FUNC();

    return bResult;
}

Referenced by InitPICE().

LoadSymbols()

PICE_SYMBOLFILE_HEADER* LoadSymbols

(

LPSTR

filename

)

Definition at line 1990 of file symbols.c.

{
    HANDLE hf;
    PICE_SYMBOLFILE_HEADER* pSymbols=NULL;
    WCHAR tempstr[256];
    int conv;
    ENTER_FUNC();

    if( !( conv = PICE_MultiByteToWideChar(CP_ACP, NULL, filename, -1, tempstr, 256 ) ) )
    {
        DPRINT((0,"Can't convert module name.\n"));
        return NULL;
    }
    DPRINT((0,"LoadSymbols: filename %s, tempstr %S, conv: %d\n", filename, tempstr, conv));

    if(ulNumSymbolsLoaded<DIM(apSymbols))
    {
        hf = PICE_open(tempstr,OF_READ);
        DPRINT((0,"LoadSymbols: hf: %x, file: %S\n",hf, tempstr));
        if(hf)
        {
            //mm_segment_t oldfs;
            size_t len;

            DPRINT((0,"hf = %x\n",hf));

            len = PICE_len(hf);
            DPRINT((0,"file len = %d\n",len));

            if(len)
            {
                pSymbols = PICE_malloc(len+1,NONPAGEDPOOL);  // maybe make pool setting an option
                DPRINT((0,"pSymbols = %x\n",pSymbols));

                if(pSymbols)
                {
                    //oldfs = get_fs(); set_fs(KERNEL_DS);
                    if(len == PICE_read(hf,(PVOID)pSymbols,len))
                    {
                        DPRINT((0,"LoadSymbols(): success reading symbols!\n"));
                        DPRINT((0,"LoadSymbols(): pSymbols->magic = %X\n",pSymbols->magic));
                    }
                    //set_fs(oldfs);


                    if(pSymbols->magic == PICE_MAGIC)
                    {
                        DPRINT((0,"magic = %X\n",pSymbols->magic));
                        DPRINT((0,"name = %S\n",pSymbols->name));
                        DPRINT((0,"ulOffsetToHeaders,ulSizeOfHeader = %X,%X\n",pSymbols->ulOffsetToHeaders,pSymbols->ulSizeOfHeader));
                        DPRINT((0,"ulOffsetToGlobals,ulSizeOfGlobals = %X,%X\n",pSymbols->ulOffsetToGlobals,pSymbols->ulSizeOfGlobals));
                        DPRINT((0,"ulOffsetToGlobalsStrings,ulSizeOfGlobalsStrings = %X,%X\n",pSymbols->ulOffsetToGlobalsStrings,pSymbols->ulSizeOfGlobalsStrings));
                        DPRINT((0,"ulOffsetToStabs,ulSizeOfStabs = %X,%X\n",pSymbols->ulOffsetToStabs,pSymbols->ulSizeOfStabs));
                        DPRINT((0,"ulOffsetToStabsStrings,ulSizeOfStabsStrings = %X,%X\n",pSymbols->ulOffsetToStabsStrings,pSymbols->ulSizeOfStabsStrings));
                        DPRINT((0,"ulOffsetToSrcFiles,ulNumberOfSrcFiles = %X,%X\n",pSymbols->ulOffsetToSrcFiles,pSymbols->ulNumberOfSrcFiles));
                        DPRINT((0,"pICE: symbols loaded for module \"%S\" @ %x\n",pSymbols->name,pSymbols));
                        apSymbols[ulNumSymbolsLoaded++]=pSymbols;
                    }
                    else
                    {
                        DPRINT((0,"LoadSymbols(): freeing %x\n",pSymbols));
                        DPRINT((0,"pICE: symbols file \"%s\" corrupt\n",filename));
                        PICE_free(pSymbols);
                    }
                }

            }
            PICE_close(hf);
        }
        else
        {
            DPRINT((0,"pICE: could not load symbols for %s...\n",filename));
        }
    }

    LEAVE_FUNC();

    return pSymbols;
}

Referenced by LoadSymbolsFromConfig().

LoadSymbolsFromConfig()

BOOLEAN LoadSymbolsFromConfig

(

BOOLEAN

bIgnoreBootParams

)

Definition at line 2116 of file symbols.c.

{
    HANDLE hf;
    LPSTR pConfig,pConfigEnd,pTemp;
    char temp[256];
    ULONG line = 1;
    BOOLEAN bResult = FALSE;

    ENTER_FUNC();

    hf = PICE_open(L"\\SystemRoot\\symbols\\pice.cfg",OF_READ);
    if(hf)
    {
        //mm_segment_t oldfs;
        size_t len;

        DPRINT((0,"hf = %x\n",hf));

        len = PICE_len(hf);
        DPRINT((0,"file len = %d\n",len));

        if(len)
        {
            pConfig = PICE_malloc(len+1,NONPAGEDPOOL);  // maybe make pool setting an option
            DPRINT((0,"pConfig = %x\n",pConfig));
            //oldfs = get_fs(); set_fs(KERNEL_DS);

            if(len == PICE_read(hf,(PVOID)pConfig,len))
            {
                //set_fs(oldfs);

                pConfigEnd = pConfig + len;

                while(pConfig<pConfigEnd)
                {
                    // skip leading spaces
                    while(*pConfig==' ' && pConfig<pConfigEnd)
                        pConfig++;
                    // get ptr to temporary
                    pTemp = temp;
                    // fill in temporary with symbol path
                    while(*pConfig!=0 && *pConfig!=0x0a && *pConfig!=0x0d && pConfig<pConfigEnd)
                        *pTemp++ = *pConfig++;
                    // finish up symbol path string
                    *pTemp = 0;
                    // skip any line ends
                    while((*pConfig==0x0a || *pConfig==0x0d) && pConfig<pConfigEnd)
                        pConfig++;

                    // finally try to load the symbols
                    if(PICE_strlen(temp))
                    {
                        PICE_SYMBOLFILE_HEADER *pSymbols;

                        // boot parameter
                        if(*temp == '!')
                        {
                            if(!bIgnoreBootParams)
                            {
                                if(!PICE_strlen(szBootParams))
                                {
                                    PICE_strcpy(szBootParams,temp+1);
                                    DPRINT((0,"pICE: boot params = %s\n",szBootParams));
                                }
                                else
                                {
                                    DPRINT((0,"pICE: boot params already exist! ignoring...\n",szBootParams));
                                }
                            }
                        }
                        // options
                        else if(*temp == '+')
                        {
                            if(PICE_strlen(temp)>1)
                            {
                                if(PICE_strcmpi(temp,"+vga")==0)
                                {
                                    eTerminalMode = TERMINAL_MODE_VGA_TEXT;
                                    DPRINT((0,"pICE: eTerminalMode = TERMINAL_MODE_VGA_TEXT\n"));
                                }
                                else if(PICE_strcmpi(temp,"+hercules")==0)
                                {
                                    eTerminalMode = TERMINAL_MODE_HERCULES_GRAPHICS;
                                    DPRINT((0,"pICE: eTerminalMode = TERMINAL_MODE_HERCULES_GRAPHICS\n"));
                                }
                                else if(PICE_strcmpi(temp,"+serial")==0)
                                {
                                    eTerminalMode = TERMINAL_MODE_SERIAL;
                                    DPRINT((0,"pICE: eTerminalMode = TERMINAL_MODE_SERIAL\n"));
                                }
                            }
                            else
                            {
                                DPRINT((0,"pICE: found option, but no value\n"));
                            }
                        }
                        // comment
                        else if(*temp == '#')
                        {
                            DPRINT((0,"comment out\n"));
                        }
                        // symbol file name/path
                        else
                        {
                            DPRINT((0,"Load symbols from file %s\n", temp));
                            pSymbols = LoadSymbols(temp);
                            DPRINT((0,"Load symbols from file %s, pSymbols: %x\n", temp, pSymbols));
                            if(pSymbols)
                            {
                                PICE_SYMBOLFILE_SOURCE* pSrc;
                                LPSTR p;

                                pSrc = (PICE_SYMBOLFILE_SOURCE*)((ULONG)pSymbols + pSymbols->ulOffsetToSrcFiles);
                                pCurrentSymbols = pSymbols;
                                p = strrchr(pSrc->filename,'\\');
                                if(p)
                                {
                                    PICE_strcpy(szCurrentFile,p+1);
                                }
                                else
                                {
                                    PICE_strcpy(szCurrentFile,pSrc->filename);
                                }
                            }
                        }
                    }
                    else
                    {
                        DPRINT((0,"invalid line [%u] in config!\n",line));
                    }
                    line++;
                }
            }
            else
            {
                //set_fs(oldfs);
            }
        }

        PICE_close(hf);
        bResult = TRUE;
    }
    else
    {
        DPRINT((0,"pICE: config file not found! No symbols loaded.\n"));
        DPRINT((0,"pICE: Please make sure to create a file \\systemroot\\symbols\\pice.conf\n"));
        DPRINT((0,"pICE: if you want to have symbols for any module loaded.\n"));
    }

    LEAVE_FUNC();

    return bResult;
}

Referenced by InitPICE(), and ReloadSymbols().

ReloadSymbols()

BOOLEAN ReloadSymbols

(

void

)

Definition at line 2074 of file symbols.c.

{
    BOOLEAN bResult;

    ENTER_FUNC();

    UnloadSymbols();

    bResult = LoadSymbolsFromConfig(TRUE);

    LEAVE_FUNC();

    return bResult;
}

Referenced by pice_ioctl().

SanityCheckExports()

BOOLEAN SanityCheckExports

(

void

)

Definition at line 1860 of file symbols.c.

{
    BOOLEAN bResult = FALSE;
    ULONG i,ulValue,incr;

    Print(OUTPUT_WINDOW,"pICE: sanity-checking exports...\n");
    return TRUE;
    /* fix later!!! do we really need to cross reference two kinds of symbolic info?
    if(fake_kernel_module.nsyms && fake_kernel_module.syms)
    {
        incr = (fake_kernel_module.nsyms/4);
        if(!incr)incr = 1;
        for(i=0;i<fake_kernel_module.nsyms;i+=incr)
        {
            if(ScanExports((char*)fake_kernel_module.syms[i].name,&ulValue) )
            {
                if(!(i%25))
                {
                    ClrLine(wWindow[OUTPUT_WINDOW].y + wWindow[OUTPUT_WINDOW].usCurY);
                    PICE_sprintf(tempSym,"pICE: sanity-checking exports %u/%u",
                                          i,
                                          fake_kernel_module.nsyms);
                    PutChar(tempSym,1,wWindow[OUTPUT_WINDOW].y + wWindow[OUTPUT_WINDOW].usCurY);
                }

                if(fake_kernel_module.syms[i].value != ulValue)
                {
                    PICE_sprintf(tempSym,"pICE: %s doesn't match (%.8X != %.8X)\n",
                                 fake_kernel_module.syms[i].name,
                                 fake_kernel_module.syms[i].value,
                                 ulValue);
                    Print(OUTPUT_WINDOW,tempSym);

                    return FALSE;
                }
            }
        }

        bResult = TRUE;
    }

    return bResult;
    */
}

Referenced by InitPICE().

ScanExports()

BOOLEAN ScanExports	(	const char *	pFind,
		PULONG	pValue
	)

Definition at line 327 of file symbols.c.

{
    char temp[256];
    LPSTR pStr=NULL;
    LPSTR pExp = pExports;
    BOOLEAN bResult = FALSE;

    ENTER_FUNC();
    DPRINT((0,"ScanExports pValue: %x\n", pValue));
nomatch:
    if(pExports)
        pStr = strstr(pExp,pFind);

    if(pStr)
    {
        LPSTR p;
        ULONG state;
        LPSTR pOldStr = pStr;

        for(;(*pStr!=0x0a && *pStr!=0x0d) && (ULONG)pStr>=(ULONG)pExports;pStr--);
        pStr++;
        p = temp;
        for(;(*pStr!=0x0a && *pStr!=0x0d);)*p++=*pStr++;
        *p=0;
        p = (LPSTR) PICE_strtok(temp," ");
        state=0;
        while(p)
        {
            switch(state)
            {
                case 0:
                    ConvertTokenToHex(p,pValue);
                    break;
                case 1:
                    break;
                case 2:
                    if(strcmp(p,pFind)!=0)
                    {
                        DPRINT((0,"Not: %s\n", p));
                        pExp = pOldStr+1;
                        goto nomatch;
                    }
                    state = -1;
                    bResult = TRUE;
                    DPRINT((0,"%s @ %x\n",pFind,*pValue));
                    goto exit;
                    break;
            }
            state++;
            p = (char*) PICE_strtok(NULL," ");
        }
    }
exit:
    DPRINT((0,"%s %x @ %x\n",pFind,pValue,*pValue));

    LEAVE_FUNC();

    return bResult;
}

Referenced by ConvertTokenToSymbol(), InitPICE(), InstallPrintkHook(), and RevirtualizeBreakpointsForModule().

ScanExportsByAddress()

BOOLEAN ScanExportsByAddress	(	LPSTR *	pFind,
		ULONG	ulValue
	)

Definition at line 599 of file symbols.c.

{
    char temp[256];
    static char temp3[256];
    LPSTR p,pStartOfLine,pSymbolName=NULL;
    ULONG ulCurrentValue=0;
    BOOLEAN bResult = FALSE;
    PDEBUG_MODULE pd;
    ULONG ulMinValue = -1;
    PIMAGE_SYMBOL pSym,pSymEnd;                 //running pointer to symbols and end of sym talbe
    PIMAGE_SYMBOL pFoundSym = NULL;             //current best symbol match
    ULONG ulAddr = 0x0;                         //address of the best match
    LPSTR pStr;
    PIMAGE_SECTION_HEADER pShdr;
    PICE_SYMBOLFILE_HEADER* pSymbols;
    ULONG   ulSectionSize;
    LPSTR pName;

    ENTER_FUNC();
    DPRINT((0,"In ScanExportsByAddress:\n"));

    pSymbols = FindModuleSymbols(ulValue);
    DPRINT((0,"pSymbols: %x\n", pSymbols));

    if(BuildModuleList()){
        if(pSymbols && pdebug_module_head)
        {
            PDEBUG_MODULE pdTemp;

            DPRINT((0,"looking up symbols\n"));
            pd = pdebug_module_head;
            do
            {
                if(pd->size){
                    pdTemp = pd;

                    if(ulValue>=((ULONG)pdTemp->BaseAddress) && ulValue<((ULONG)pdTemp+pdTemp->size))
                    {
                        if(PICE_wcsicmp(pdTemp->name,pSymbols->name) == 0)
                        {
                            DPRINT((0,"ScanExportsByAddress(): found symbols for module %S @ %x \n",pdTemp->name,(ULONG)pSymbols));

                            pSym = (PIMAGE_SYMBOL)((ULONG)pSymbols+pSymbols->ulOffsetToGlobals);
                            pSymEnd = (PIMAGE_SYMBOL)((ULONG)pSym+pSymbols->ulSizeOfGlobals);
                            pStr = (LPSTR)((ULONG)pSymbols+pSymbols->ulOffsetToGlobalsStrings);
                            pShdr = (PIMAGE_SECTION_HEADER)((ULONG)pSymbols+pSymbols->ulOffsetToHeaders);

                            if(!IsRangeValid((ULONG)pSym,sizeof(IMAGE_SYMBOL) ) ) //should we actually check all the symbols here?
                            {
                                DPRINT((0,"ScanExportsByAddress(): pSym = %x is not a valid pointer\n",(ULONG)pSym));
                                return FALSE;
                            }

                            DPRINT((0,"ScanExportsByAddress(): pSym = %x\n",pSym));
                            DPRINT((0,"ScanExportsByAddress(): pStr = %x\n",pStr));
                            DPRINT((0,"ScanExportsByAddress(): pShdr = %x\n",pShdr));

                            DPRINT((0,"ScanExportsByAddress(): %S has %u symbols\n",pSymbols->name,pSymbols->ulSizeOfGlobals/sizeof(IMAGE_SYMBOL)));

                            /* go through all the global symbols and find the one with
                               the largest address which is less than ulValue */
                            while(pSym < pSymEnd)
                            {   //it seems only 0x0 and 0x20 are used for type and External or Static storage classes
                                if(((pSym->Type == 0x0) || (pSym->Type == 0x20) )  &&
                                   ((pSym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) || (pSym->StorageClass==IMAGE_SYM_CLASS_STATIC)) &&
                                   (pSym->SectionNumber > 0 ))
                                {
                                    ULONG ulCurrAddr;
                                    PIMAGE_SECTION_HEADER pShdrThis = (PIMAGE_SECTION_HEADER)pShdr + (pSym->SectionNumber-1);


                                    DPRINT((0,"ScanExportsByAddress(): pShdr[%x] = %x\n",pSym->SectionNumber,(ULONG)pShdrThis));

                                    if(!IsRangeValid((ULONG)pShdrThis,sizeof(IMAGE_SECTION_HEADER)) )
                                    {
                                        DPRINT((0,"ScanExportsByAddress(): pElfShdr[%x] = %x is not a valid pointer\n",pSym->SectionNumber,(ULONG)pShdrThis));
                                        return FALSE;
                                    }
                                    //to get address in the memory we base address of the module and
                                    //add offset of the section and then add offset of the symbol from
                                    //the begining of the section
                                    ulCurrAddr = ((ULONG)pdTemp->BaseAddress+pShdrThis->VirtualAddress+pSym->Value);
                                    DPRINT((0,"ScanExportsByAddress(): CurrAddr [1] = %x\n",ulCurrAddr));

                                    if(ulCurrAddr<=ulValue && ulCurrAddr>ulAddr)
                                    {
                                        ulAddr = ulCurrAddr;
                                        pFoundSym = pSym;
                                    }
                                }
                                //skip the auxiliary symbols and get the next symbol
                                pSym += pSym->NumberOfAuxSymbols + 1;
                            }
                            *pFind = temp3;
                            if( pFoundSym->N.Name.Short ){
                                pName = pFoundSym->N.ShortName;  //name is in the header
                                PICE_sprintf(temp3,"%S!%.8s",pdTemp->name,pName); //if name is in the header it may be nonzero terminated
                            }
                            else{
                                ASSERT(pFoundSym->N.Name.Long<=pSymbols->ulSizeOfGlobalsStrings); //sanity check
                                pName = pStr+pFoundSym->N.Name.Long;
                                if(!IsAddressValid((ULONG)pName))
                                {
                                    DPRINT((0,"ScanExportsByAddress(): pName = %x is not a valid pointer\n",pName));
                                    return FALSE;
                                }
                                PICE_sprintf(temp3,"%S!%s",pdTemp->name,pName);
                            }
                            DPRINT((0,"ScanExportsByAddress(): pName = %x\n",(ULONG)pName));
                            return TRUE;
                        }
                    }
                }
            }while((pd = pd->next));
        }
    }
    // if haven't found in the symbols try ntoskrnl exports. (note: check that this is needed since we
    // already checked ntoskrnl coff symbol table)
    if(pExports && ulValue >= KERNEL_START && ulValue < kernel_end)
    {
        p = pExports;
        // while we bound in System.map
        while(p<((LPSTR)pExports+ulExportLen))
        {
            // make a temp ptr to the line we can change
            pStartOfLine = p;
            // will read the hex value and return a pointer to the symbol name
            if(ScanExportLine(p,&ulCurrentValue,&pStartOfLine))
            {
                if(ulValue>=ulCurrentValue && (ulValue-ulCurrentValue)<ulMinValue)
                {
                    // save away our info for later
                    ulMinValue = ulValue-ulCurrentValue;
                    pSymbolName = pStartOfLine;
                    bResult = TRUE;
                    *pFind = temp3;
                    if(ulMinValue==0)
                        break;
                }
            }
            // increment pointer to next line
            p = pStartOfLine;
            while(*p!=0 && *p!=0x0a && *p!=0x0d)p++;
                p++;
        }
        if(bResult)
        {
            int i;
            // copy symbol name to temp string
            for(i=0;pSymbolName[i]!=0 && pSymbolName[i]!=0x0a && pSymbolName[i]!=0x0d;i++)
                temp[i] = pSymbolName[i];
            temp[i] = 0;
            // decide if we need to append an offset
            if(ulMinValue)
                PICE_sprintf(temp3,"ntoskrnl!%s+%.8X",temp,ulMinValue);
            else
                PICE_sprintf(temp3,"ntoskrnl!%s",temp);
        }
    }

    LEAVE_FUNC();
    return bResult;
}

Referenced by COMMAND_PROTOTYPE(), Disassembler(), ListSWBreakpoints(), OutputIdtEntry(), RealIsr(), and RevirtualizeBreakpointsForModule().

UnloadExports()

void UnloadExports

(

void

)

Definition at line 1974 of file symbols.c.

{
    ENTER_FUNC();
    if(pExports)
    {
        DPRINT((0,"freeing %x\n",pExports));
        PICE_free(pExports);
        pExports = NULL;
    }
    LEAVE_FUNC();
}

Referenced by CleanUpPICE(), and InitPICE().

UnloadSymbols()

void UnloadSymbols

(

void

)

Definition at line 2093 of file symbols.c.

{
    ULONG i;

    ENTER_FUNC();

    if(ulNumSymbolsLoaded)
    {
        for(i=0;i<ulNumSymbolsLoaded;i++)
        {
            DPRINT((0,"freeing [%u] %x\n",i,apSymbols[i]));
            PICE_free(apSymbols[i]);
            apSymbols[i] = NULL;
        }
        ulNumSymbolsLoaded = 0;
    }
    LEAVE_FUNC();
}

Referenced by CleanUpPICE(), InitPICE(), pice_ioctl(), and ReloadSymbols().

Variable Documentation

apSymbols

PICE_SYMBOLFILE_HEADER* apSymbols[32]

Definition at line 53 of file symbols.c.

Referenced by COMMAND_PROTOTYPE(), ConvertTokenToModule(), FindModuleSymbols(), FindModuleSymbolsByModuleName(), LoadSymbols(), and UnloadSymbols().