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windows-nt/Source/XPSP1/NT/sdktools/debuggers/symtodbg/symcvt/cofftocv.c
CryptoAlgo Inc b3cac27891 Add source files
2020-09-26 16:20:57 +08:00

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/*++
Copyright 1996 - 1997 Microsoft Corporation
Module Name:
cv.c
Abstract:
This module handles the conversion activities requires for converting
COFF debug data to CODEVIEW debug data.
Author:
Wesley A. Witt (wesw) 19-April-1993
Environment:
Win32, User Mode
--*/
#include <windows.h>
#include <imagehlp.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "cv.h"
#define _SYMCVT_SOURCE_
#include "symcvt.h"
#include "cvcommon.h"
typedef struct tagOFFSETSORT {
DWORD dwOffset; // offset for the symbol
DWORD dwSection; // section number of the symbol
DATASYM32 *dataSym; // pointer to the symbol info
} OFFSETSORT;
#define n_name N.ShortName
#define n_zeroes N.Name.Short
#define n_nptr N.LongName[1]
#define n_offset N.Name.Long
static LPSTR GetSymName( PIMAGE_SYMBOL Symbol, PUCHAR StringTable, char *s );
DWORD CreateModulesFromCoff( PPOINTERS p );
DWORD CreatePublicsFromCoff( PPOINTERS p );
DWORD CreateSegMapFromCoff( PPOINTERS p );
DWORD CreateSrcLinenumbers( PPOINTERS p );
LONG
GuardPageFilterFunction(
DWORD ec,
LPEXCEPTION_POINTERS lpep
)
/*++
Routine Description:
This function catches all exceptions from the convertcofftocv function
and all that it calls. The purpose of this function is allocate memory
when it is necessary. This happens because the cofftocv conversion cannot
estimate the memory requirements before the conversion takes place. To
handle this properly space in the virtual address space is reserved, the
reservation amount is 10 times the image size. The first page is commited
and then the conversion is started. When an access violation occurs and the
page that is trying to be access has a protection of noaccess then the
page is committed. Any other exception is not handled.
Arguments:
ec - the ecxeption code (should be EXCEPTION_ACCESS_VIOLATION)
lpep - pointer to the exception record and context record
Return Value:
EXCEPTION_CONTINUE_EXECUTION - access violation handled
EXCEPTION_EXECUTE_HANDLER - unknown exception and is not handled
--*/
{
LPVOID vaddr;
SYSTEM_INFO si;
MEMORY_BASIC_INFORMATION mbi;
if (ec == EXCEPTION_ACCESS_VIOLATION) {
vaddr = (LPVOID)lpep->ExceptionRecord->ExceptionInformation[1];
VirtualQuery( vaddr, &mbi, sizeof(mbi) );
if (mbi.AllocationProtect == PAGE_NOACCESS) {
GetSystemInfo( &si );
VirtualAlloc( vaddr, si.dwPageSize, MEM_COMMIT, PAGE_READWRITE );
return EXCEPTION_CONTINUE_EXECUTION;
}
}
// return EXCEPTION_CONTINUE_SEARCH;
return EXCEPTION_EXECUTE_HANDLER;
}
BOOL
ConvertCoffToCv( PPOINTERS p )
/*++
Routine Description:
This is the control function for the conversion of COFF to CODEVIEW
debug data. It calls individual functions for the conversion of
specific types of debug data.
Arguments:
p - pointer to a POINTERS structure
Return Value:
TRUE - conversion succeded
FALSE - conversion failed
--*/
{
SYSTEM_INFO si;
DWORD cbsize;
BOOL rval = TRUE;
GetSystemInfo( &si );
cbsize = max( p->iptrs.fsize * 10, si.dwPageSize * 10 );
//
// reserve all necessary pages
//
p->pCvCurr = p->pCvStart.ptr = VirtualAlloc( NULL, cbsize, MEM_RESERVE, PAGE_NOACCESS );
//
// commit the first pages
//
VirtualAlloc( p->pCvCurr, min( cbsize, 5 * si.dwPageSize), MEM_COMMIT, PAGE_READWRITE );
try {
CreateSignature( p );
CreateModulesFromCoff( p );
CreatePublicsFromCoff( p );
CreateSymbolHashTable( p );
CreateAddressSortTable( p );
CreateSegMapFromCoff( p );
// CreateSrcLinenumbers( p );
CreateDirectories( p );
} except ( GuardPageFilterFunction( GetExceptionCode(), GetExceptionInformation() )) {
VirtualFree( p->pCvStart.ptr, cbsize, MEM_DECOMMIT );
p->pCvStart.ptr = NULL;
rval = FALSE;
}
if (rval) {
p->pCvCurr = malloc( p->pCvStart.size );
CopyMemory( p->pCvCurr, p->pCvStart.ptr, p->pCvStart.size );
VirtualFree( p->pCvStart.ptr, cbsize, MEM_DECOMMIT );
p->pCvStart.ptr = p->pCvCurr;
}
return rval;
}
DWORD
CreateModulesFromCoff( PPOINTERS p )
/*++
Routine Description:
Creates the individual CV module records. There is one CV module
record for each .FILE record in the COFF debug data. This is true
even if the COFF size is zero.
Arguments:
p - pointer to a POINTERS structure
Return Value:
The number of modules that were created.
--*/
{
int i,j;
DWORD dwOff;
DWORD numaux;
DWORD nummods = 0;
char szSymName[256];
PIMAGE_SYMBOL Symbol;
PIMAGE_AUX_SYMBOL AuxSymbol;
OMFModule *m = NULL;
int cSeg = 0;
char * pb;
BOOLEAN rgfCode[500];
memset(rgfCode, 2, sizeof(rgfCode));
for (i=0,j=0, Symbol=p->iptrs.AllSymbols;
i<(int)p->iptrs.numberOfSymbols;
i+=numaux+1,Symbol+=numaux+1) {
numaux = Symbol->NumberOfAuxSymbols;
if (Symbol->StorageClass == IMAGE_SYM_CLASS_FILE) {
j++;
}
}
p->pMi = (LPMODULEINFO) malloc( sizeof(MODULEINFO) * (j + 1) );
ZeroMemory( p->pMi, sizeof(MODULEINFO) * (j + 1) );
if (!j) {
//
// Handle the situation where there are not any .file records in the
// COFF symbol table. This can happen for ROM images. If this happens
// then we will fabricate a bogus module.
//
m = (OMFModule *) p->pCvCurr;
m->ovlNumber = 0;
m->iLib = 0;
m->Style[0] = 'C';
m->Style[1] = 'V';
for (i=0,j=0, dwOff=0; i<p->iptrs.numberOfSections; i++) {
if (p->iptrs.sectionHdrs[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) {
m->SegInfo[j].Seg = i + 1;
m->SegInfo[j].cbSeg = p->iptrs.sectionHdrs[i].SizeOfRawData;
m->SegInfo[j++].Off = dwOff;
}
dwOff += p->iptrs.sectionHdrs[i].SizeOfRawData;
}
m->cSeg = (unsigned short) j;
strcpy(szSymName,"foo.c");
pb = (char *) &m->SegInfo[j];
*pb = (char)strlen(szSymName);
memcpy(pb+1, szSymName, *pb);
p->pMi[0].name = _strdup(szSymName);
p->pMi[0].iMod = 1;
p->pMi[0].cb = 0;
p->pMi[0].SrcModule = 0;
m = NextMod(m);
p->modcnt = 1;
UpdatePtrs( p, &p->pCvModules, (LPVOID)m, 1 );
return 1;
}
for (i=0, Symbol = p->iptrs.AllSymbols;
i < (int) p->iptrs.numberOfSymbols;
i += numaux + 1, Symbol += numaux + 1) {
//
// Get the number of aux symbol records for this symbol
//
numaux = Symbol->NumberOfAuxSymbols;
AuxSymbol = (PIMAGE_AUX_SYMBOL) (Symbol+1);
if ((i == 0) && ((Symbol+numaux+1)->StorageClass != IMAGE_SYM_CLASS_FILE)) {
//
// we have a situation where the first '.file' record
// is missing. currently this only happens with the
// claxp compiler on alpha.
//
m = (OMFModule *) p->pCvCurr;
cSeg = 0;
m->ovlNumber = 0;
m->iLib = 0;
m->Style[0] = 'C';
m->Style[1] = 'V';
strcpy( szSymName, "fake.c" );
} else
//
// If this is a FILE record -- then we need to create a
// module item to correspond to this file record.
//
if (Symbol->StorageClass == IMAGE_SYM_CLASS_FILE) {
if (m == NULL) {
m = (OMFModule *) p->pCvCurr;
} else {
//
// Clean up the last item, if we saw any
// section records then drop them in here
//
if (cSeg > 0) {
m->cSeg = (unsigned short) cSeg;
pb = (char *) &m->SegInfo[cSeg];
*pb = (char)strlen(szSymName);
memcpy(pb+1, szSymName, *pb);
p->pMi[nummods].name = _strdup(szSymName);
p->pMi[nummods].iMod = nummods + 1;
p->pMi[nummods].cb = 0;
p->pMi[nummods].SrcModule = 0;
m = NextMod(m);
nummods++;
}
}
cSeg = 0;
m->ovlNumber = 0;
m->iLib = 0;
m->Style[0] = 'C';
m->Style[1] = 'V';
/*
* Save off the file name to use when we have finished
* processing this module
*/
memcpy(szSymName, (char *)AuxSymbol, numaux*sizeof(IMAGE_AUX_SYMBOL));
szSymName[numaux*sizeof(IMAGE_AUX_SYMBOL)] = 0;
}
/*
* We have found a "SECTION" record. Add the info to the
* module record
*/
else
if ((Symbol->SectionNumber & 0xffff) > 0xfff0) {
continue;
} else
if (Symbol->SectionNumber > sizeof(rgfCode)/sizeof(rgfCode[0])) {
return 0;
} else
if ((m != NULL) &&
(rgfCode[Symbol->SectionNumber] != 0) &&
(Symbol->StorageClass == IMAGE_SYM_CLASS_STATIC) &&
((*Symbol->n_name == '.') ||
(Symbol->Type == IMAGE_SYM_TYPE_NULL)) &&
(Symbol->NumberOfAuxSymbols == 1) &&
(AuxSymbol->Section.Length != 0)) {
if (rgfCode[Symbol->SectionNumber] == 2) {
if ((p->iptrs.sectionHdrs[Symbol->SectionNumber - 1].
Characteristics & IMAGE_SCN_CNT_CODE) == 0) {
rgfCode[Symbol->SectionNumber] = 0;
continue;
}
rgfCode[Symbol->SectionNumber] = 1;
}
m->SegInfo[cSeg].Seg = Symbol->SectionNumber;
m->SegInfo[cSeg].cbSeg = AuxSymbol->Section.Length;
m->SegInfo[cSeg].Off = Symbol->Value -
p->iptrs.sectionHdrs[Symbol->SectionNumber-1].
VirtualAddress;
cSeg += 1;
}
}
/*
* Wrap up the last possible open module record
*/
if (m != NULL) {
if (cSeg > 0) {
m->cSeg = (unsigned short) cSeg;
pb = (char *) &m->SegInfo[cSeg];
*pb = (char)strlen(szSymName);
memcpy(pb+1, szSymName, *pb);
p->pMi[nummods].name = _strdup(szSymName);
p->pMi[nummods].iMod = nummods + 1;
p->pMi[nummods].cb = 0;
p->pMi[nummods].SrcModule = 0;
m = NextMod(m);
nummods++;
}
}
p->modcnt = nummods;
UpdatePtrs( p, &p->pCvModules, (LPVOID)m, nummods );
return nummods;
}
DWORD
CreatePublicsFromCoff( PPOINTERS p )
/*++
Routine Description:
Creates the individual CV public symbol records. There is one CV
public record created for each COFF symbol that is marked as EXTERNAL
and has a section number greater than zero. The resulting CV publics
are sorted by section and offset.
Arguments:
p - pointer to a POINTERS structure
Return Value:
The number of publics created.
--*/
{
int i;
DWORD numaux;
DWORD numsyms = 0;
char szSymName[256];
PIMAGE_SYMBOL Symbol;
OMFSymHash *omfSymHash;
DATASYM32 *dataSym;
DATASYM32 *dataSym2;
omfSymHash = (OMFSymHash *) p->pCvCurr;
dataSym = (DATASYM32 *) (PUCHAR)((DWORD)omfSymHash + sizeof(OMFSymHash));
for (i= 0, Symbol = p->iptrs.AllSymbols;
i < p->iptrs.numberOfSymbols;
i += numaux + 1, Symbol += numaux + 1) {
if ((Symbol->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) &&
(Symbol->SectionNumber > 0)) {
if (GetSymName( Symbol, p->iptrs.stringTable, szSymName )) {
dataSym->rectyp = S_PUB32;
dataSym->seg = Symbol->SectionNumber;
dataSym->off = Symbol->Value -
p->iptrs.sectionHdrs[Symbol->SectionNumber-1].VirtualAddress;
dataSym->typind = 0;
dataSym->name[0] = (char)strlen( szSymName );
strcpy( &dataSym->name[1], szSymName );
dataSym2 = NextSym32( dataSym );
dataSym->reclen = (USHORT) ((DWORD)dataSym2 - (DWORD)dataSym) - 2;
dataSym = dataSym2;
numsyms += 1;
}
}
numaux = Symbol->NumberOfAuxSymbols;
}
UpdatePtrs( p, &p->pCvPublics, (LPVOID)dataSym, numsyms );
omfSymHash->cbSymbol = p->pCvPublics.size - sizeof(OMFSymHash);
omfSymHash->symhash = 0;
omfSymHash->addrhash = 0;
omfSymHash->cbHSym = 0;
omfSymHash->cbHAddr = 0;
return numsyms;
} /* CreatePublisFromCoff() */
DWORD
CreateSrcLinenumbers(
PPOINTERS p
)
/*++
Routine Description:
Creates the individual CV soure line number records.
Arguments:
p - pointer to a POINTERS structure
Return Value:
The number of publics created.
--*/
{
typedef struct _SEGINFO {
DWORD start;
DWORD end;
DWORD cbLines;
DWORD ptrLines;
DWORD va;
DWORD num;
BOOL used;
} SEGINFO, *LPSEGINFO;
typedef struct _SRCINFO {
LPSEGINFO seg;
DWORD numSeg;
DWORD cbSeg;
CHAR name[MAX_PATH+1];
} SRCINFO, *LPSRCINFO;
typedef struct _SECTINFO {
DWORD va;
DWORD size;
DWORD ptrLines;
DWORD numLines;
} SECTINFO, *LPSECTINFO;
DWORD i;
DWORD j;
DWORD k;
DWORD l;
DWORD actual;
DWORD sidx;
DWORD NumSrcFiles;
DWORD SrcFileCnt;
DWORD numaux;
PIMAGE_SYMBOL Symbol;
PIMAGE_AUX_SYMBOL AuxSymbol;
BOOL first = TRUE;
OMFSourceModule *SrcModule;
OMFSourceFile *SrcFile;
OMFSourceLine *SrcLine;
LPBYTE lpb;
LPDWORD lpdw;
PUSHORT lps;
PUCHAR lpc;
PIMAGE_LINENUMBER pil, pilSave;
LPSRCINFO si;
LPSECTINFO sections;
//
// setup the section info structure
//
sections = (LPSECTINFO) malloc( sizeof(SECTINFO) * p->iptrs.numberOfSections );
for (i=0; i<(DWORD)p->iptrs.numberOfSections; i++) {
sections[i].va = p->iptrs.sectionHdrs[i].VirtualAddress;
sections[i].size = p->iptrs.sectionHdrs[i].SizeOfRawData;
sections[i].ptrLines = p->iptrs.sectionHdrs[i].PointerToLinenumbers;
sections[i].numLines = p->iptrs.sectionHdrs[i].NumberOfLinenumbers;
}
//
// count the number of source files that contibute linenumbers
//
SrcFileCnt = 100;
si = (LPSRCINFO) malloc( sizeof(SRCINFO) * SrcFileCnt );
ZeroMemory( si, sizeof(SRCINFO) * SrcFileCnt );
for (i=0, j=0, Symbol=p->iptrs.AllSymbols, NumSrcFiles=0;
i<(DWORD)p->iptrs.numberOfSymbols;
i+=(numaux+1), Symbol+=(numaux + 1)) {
numaux = Symbol->NumberOfAuxSymbols;
AuxSymbol = (PIMAGE_AUX_SYMBOL) (Symbol+1);
if (Symbol->StorageClass == IMAGE_SYM_CLASS_FILE) {
if (!first) {
si[NumSrcFiles].cbSeg = j;
NumSrcFiles++;
if (NumSrcFiles == SrcFileCnt) {
SrcFileCnt += 100;
si = (LPSRCINFO) realloc( si, sizeof(SRCINFO) * SrcFileCnt );
}
}
memcpy(si[NumSrcFiles].name, (char *)AuxSymbol, numaux*sizeof(IMAGE_AUX_SYMBOL));
si[NumSrcFiles].name[numaux*sizeof(IMAGE_AUX_SYMBOL)] = 0;
si[NumSrcFiles].numSeg = 100;
si[NumSrcFiles].seg = (LPSEGINFO) malloc( sizeof(SEGINFO) * si[NumSrcFiles].numSeg );
ZeroMemory( si[NumSrcFiles].seg, sizeof(SEGINFO) * si[NumSrcFiles].numSeg );
first = FALSE;
j = 0;
}
//
// we do not want to look for segment information until we
// have found a valid source file
//
if (first) {
continue;
}
//
// check the symbol to see if it is a segment record
//
if (numaux && Symbol->StorageClass == IMAGE_SYM_CLASS_STATIC &&
(*Symbol->n_name == '.' ||
((Symbol->Type & 0xf) == IMAGE_SYM_TYPE_NULL && AuxSymbol->Section.Length)) &&
AuxSymbol->Section.NumberOfLinenumbers > 0) {
//
// find the section that this symbol belongs to
//
for (k=0; k<(DWORD)p->iptrs.numberOfSections; k++) {
if (Symbol->Value >= sections[k].va &&
Symbol->Value < sections[k].va + sections[k].size) {
sidx = k;
break;
}
}
if (k != (DWORD)p->iptrs.numberOfSections &&
p->iptrs.sectionHdrs[k].NumberOfLinenumbers) {
pil = (PIMAGE_LINENUMBER) (p->iptrs.fptr + sections[sidx].ptrLines);
k = 0;
while( k < AuxSymbol->Section.NumberOfLinenumbers ) {
//
// count the linenumbers in this section or sub-section
//
for ( pilSave=pil,l=0;
k<AuxSymbol->Section.NumberOfLinenumbers;
k++,pilSave++,l++ ) {
if ((k != (DWORD)AuxSymbol->Section.NumberOfLinenumbers-1) &&
(pilSave->Linenumber > (pilSave+1)->Linenumber)) {
pilSave++;
l++;
break;
}
}
//
// pil == beginning of the range
// pilSave == end of the range
//
si[NumSrcFiles].seg[j].start =
(pil->Type.VirtualAddress - sections[sidx].va);
if (sections[sidx].numLines == l) {
pilSave--;
si[NumSrcFiles].seg[j].end =
(pilSave->Type.VirtualAddress - sections[sidx].va) + 1;
// (Symbol->Value - sections[sidx].va) + 1;
} else {
si[NumSrcFiles].seg[j].end =
(pilSave->Type.VirtualAddress - sections[sidx].va) - 1;
// (Symbol->Value - sections[sidx].va) - 1;
}
si[NumSrcFiles].seg[j].ptrLines = sections[sidx].ptrLines;
si[NumSrcFiles].seg[j].cbLines = l;
si[NumSrcFiles].seg[j].va = sections[sidx].va;
si[NumSrcFiles].seg[j].num = sidx + 1;
si[NumSrcFiles].seg[j].used = FALSE;
sections[sidx].ptrLines += (l * sizeof(IMAGE_LINENUMBER));
sections[sidx].numLines -= l;
j++;
if (j == si[NumSrcFiles].numSeg) {
si[NumSrcFiles].numSeg += 100;
si[NumSrcFiles].seg = (LPSEGINFO) realloc( si[NumSrcFiles].seg, sizeof(SEGINFO) * si[NumSrcFiles].numSeg );
}
k++;
pil = pilSave;
}
}
}
}
lpb = (LPBYTE) p->pCvCurr;
//
// if there is nothing to do then bail out
//
if (!NumSrcFiles) {
UpdatePtrs( p, &p->pCvSrcModules, (LPVOID)lpb, 0 );
return 0;
}
for (i=0,actual=0,l=0; i<NumSrcFiles; i++) {
if (si[i].cbSeg == 0) {
continue;
}
//
// create the source module header
//
SrcModule = (OMFSourceModule*) lpb;
SrcModule->cFile = 1;
SrcModule->cSeg = (USHORT)si[i].cbSeg;
SrcModule->baseSrcFile[0] = 0;
//
// write the start/end pairs
//
lpdw = (LPDWORD) ((LPBYTE)SrcModule + sizeof(OMFSourceModule));
for (k=0; k<si[i].cbSeg; k++) {
*lpdw++ = si[i].seg[k].start;
*lpdw++ = si[i].seg[k].end;
}
//
// write the segment numbers
//
lps = (PUSHORT) lpdw;
for (k=0; k<si[i].cbSeg; k++) {
*lps++ = (USHORT)si[i].seg[k].num;
}
//
// align to a dword boundry
//
lps = (PUSHORT) ((LPBYTE)lps + align(lps));
//
// update the base pointer
//
SrcModule->baseSrcFile[0] = (DWORD) ((LPBYTE)lps - (LPBYTE)SrcModule);
//
// write the source file record
//
SrcFile = (OMFSourceFile*) lps;
SrcFile->cSeg = (USHORT)si[i].cbSeg;
SrcFile->reserved = 0;
for (k=0; k<si[i].cbSeg; k++) {
SrcFile->baseSrcLn[k] = 0;
}
//
// write the start/end pairs
//
lpdw = (LPDWORD) ((LPBYTE)SrcFile + 4 + (4 * si[i].cbSeg));
for (k=0; k<si[i].cbSeg; k++) {
*lpdw++ = si[i].seg[k].start;
*lpdw++ = si[i].seg[k].end;
}
//
// write the source file name
//
lpc = (PUCHAR) lpdw;
k = strlen(si[i].name);
*lpc++ = (UCHAR) k;
strcpy( lpc, si[i].name );
lpb = lpc + k;
//
// find the module info struct
//
for (; l<p->modcnt; l++) {
if (_stricmp(p->pMi[l].name,si[i].name)==0) {
break;
}
}
p->pMi[l].SrcModule = (DWORD) SrcModule;
//
// align to a dword boundry
//
lpb = (LPBYTE) (lpb + align(lpb));
//
// create the line number pairs
//
for (k=0; k<si[i].cbSeg; k++) {
//
// find the first line number that applies to this segment
//
pil = (PIMAGE_LINENUMBER) (p->iptrs.fptr + si[i].seg[k].ptrLines);
//
// update the base pointer
//
SrcFile->baseSrcLn[k] = (DWORD) (lpb - (LPBYTE)SrcModule);
//
// write the line numbers
//
SrcLine = (OMFSourceLine*) lpb;
SrcLine->Seg = (USHORT)si[i].seg[k].num;
SrcLine->cLnOff = (USHORT) si[i].seg[k].cbLines;
pilSave = pil;
lpdw = (LPDWORD) (lpb + 4);
for (j=0; j<SrcLine->cLnOff; j++) {
*lpdw++ = pil->Type.VirtualAddress - si[i].seg[k].va;
pil++;
}
lps = (PUSHORT) lpdw;
pil = pilSave;
for (j=0; j<SrcLine->cLnOff; j++) {
*lps++ = pil->Linenumber;
pil++;
}
//
// align to a dword boundry
//
lps = (PUSHORT) ((LPBYTE)lps + align(lps));
lpb = (LPBYTE) lps;
}
p->pMi[l].cb = (DWORD)lpb - (DWORD)SrcModule;
actual++;
}
UpdatePtrs( p, &p->pCvSrcModules, (LPVOID)lpb, actual );
//
// cleanup all allocated memory
//
free( sections );
for (i=0; i<SrcFileCnt; i++) {
if (si[i].seg) {
free( si[i].seg );
}
}
free( si );
return NumSrcFiles;
} /* CreateSrcLinenumbers() */
DWORD
CreateSegMapFromCoff( PPOINTERS p )
/*++
Routine Description:
Creates the CV segment map. The segment map is used by debuggers
to aid in address lookups. One segment is created for each COFF
section in the image.
Arguments:
p - pointer to a POINTERS structure
Return Value:
The number of segments in the map.
--*/
{
int i;
SGM *sgm;
SGI *sgi;
PIMAGE_SECTION_HEADER sh;
sgm = (SGM *) p->pCvCurr;
sgi = (SGI *) ((DWORD)p->pCvCurr + sizeof(SGM));
sgm->cSeg = (unsigned short) p->iptrs.numberOfSections;
sgm->cSegLog = (unsigned short) p->iptrs.numberOfSections;
sh = p->iptrs.sectionHdrs;
for (i=0; i<p->iptrs.numberOfSections; i++, sh++) {
sgi->sgf.fRead = (USHORT) (sh->Characteristics & IMAGE_SCN_MEM_READ) == IMAGE_SCN_MEM_READ;
sgi->sgf.fWrite = (USHORT) (sh->Characteristics & IMAGE_SCN_MEM_WRITE) == IMAGE_SCN_MEM_WRITE;
sgi->sgf.fExecute = (USHORT) (sh->Characteristics & IMAGE_SCN_MEM_EXECUTE) == IMAGE_SCN_MEM_EXECUTE;
sgi->sgf.f32Bit = 1;
sgi->sgf.fSel = 0;
sgi->sgf.fAbs = 0;
sgi->sgf.fGroup = 1;
sgi->iovl = 0;
sgi->igr = 0;
sgi->isgPhy = (USHORT) i + 1;
sgi->isegName = 0;
sgi->iclassName = 0;
sgi->doffseg = 0;
sgi->cbSeg = sh->SizeOfRawData;
sgi++;
}
UpdatePtrs( p, &p->pCvSegMap, (LPVOID)sgi, i );
return i;
}
LPSTR
GetSymName( PIMAGE_SYMBOL Symbol, PUCHAR StringTable, char *s )
/*++
Routine Description:
Extracts the COFF symbol from the image symbol pointer and puts
the ascii text in the character pointer passed in.
Arguments:
Symbol - COFF Symbol Record
StringTable - COFF string table
s - buffer for the symbol string
Return Value:
void
--*/
{
DWORD i;
if (Symbol->n_zeroes) {
for (i=0; i<8; i++) {
if ((Symbol->n_name[i]>0x1f) && (Symbol->n_name[i]<0x7f)) {
*s++ = Symbol->n_name[i];
}
}
*s = 0;
}
else {
if (StringTable[Symbol->n_offset] == '?') {
i = UnDecorateSymbolName( &StringTable[Symbol->n_offset],
s,
255,
UNDNAME_COMPLETE |
UNDNAME_NO_LEADING_UNDERSCORES |
UNDNAME_NO_MS_KEYWORDS |
UNDNAME_NO_FUNCTION_RETURNS |
UNDNAME_NO_ALLOCATION_MODEL |
UNDNAME_NO_ALLOCATION_LANGUAGE |
UNDNAME_NO_MS_THISTYPE |
UNDNAME_NO_CV_THISTYPE |
UNDNAME_NO_THISTYPE |
UNDNAME_NO_ACCESS_SPECIFIERS |
UNDNAME_NO_THROW_SIGNATURES |
UNDNAME_NO_MEMBER_TYPE |
UNDNAME_NO_RETURN_UDT_MODEL |
UNDNAME_NO_ARGUMENTS |
UNDNAME_NO_SPECIAL_SYMS |
UNDNAME_NAME_ONLY
);
if (!i) {
return NULL;
}
} else {
strcpy( s, &StringTable[Symbol->n_offset] );
}
}
return s;
}
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