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windows-server-2003/sdktools/link16/newdeb.c

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/*
* Copyright Microsoft Corporation 1985-1987
*
* This Module contains Proprietary Information of Microsoft
* Corporation and should be treated as Confidential.
*/
/****************************************************************
* *
* NEWDEB.C *
* *
* Symbolic debugging support. *
* *
****************************************************************/
#include <minlit.h> /* Basic types and constants */
#include <bndtrn.h> /* More types and constants */
#include <bndrel.h> /* Types and constants */
#include <lnkio.h> /* Linker input/output */
#if OIAPX286
#include <xenfmt.h> /* Xenix executable format defs. */
#endif
#if OEXE
#include <newexe.h> /* Segmented executable format */
#endif
#if EXE386
#include <exe386.h>
#endif
#include <lnkmsg.h> /* Error messages */
#include <extern.h> /* External function declarations */
#ifndef CVVERSION
#if OIAPX286
#define CVVERSION 0 /* Assume new CV exe format */
#else
#define CVVERSION 1 /* Assume new CV exe format */
#endif
#endif
#if (CPU8086 OR CPU286)
#define TFAR far
#else
#define TFAR
#endif
#include <newdeb.h> /* Symbolic debug types */
extern SEGTYPE segAdjCom; /* Segment moved by 0x100 in .com programs */
#if AUTOVM
BYTE FAR * NEAR FetchSym1(RBTYPE rb, WORD Dirty);
#define FETCHSYM FetchSym1
#define PROPSYMLOOKUP EnterName
#else
#define FETCHSYM FetchSym
#define PROPSYMLOOKUP EnterName
#endif
#define CVDEBUG FALSE
#define SRCDEBUG FALSE
#define DNT_START 64
#define Round2Dword(x) (((x) + 3L) & ~3L)
typedef struct raPair
{
DWORD raStart;
DWORD raEnd;
}
RAPAIR;
/*
* FUNCTION PROTOTYPES
*/
LOCAL WORD NEAR IsDebTyp(APROPSNPTR prop);
LOCAL WORD NEAR IsDebSym(APROPSNPTR prop);
LOCAL int NEAR OutLibSec(void);
void NEAR GetName(AHTEPTR ahte, BYTE *pBuf);
LOCAL DWORD NEAR OutSrcModule(CVSRC FAR *pSrcLines);
LOCAL void NEAR PutDnt(DNT *pDnt);
LOCAL WORD NEAR HasCVinfo(APROPFILEPTR apropFile);
LOCAL void NEAR OutModules(void);
LOCAL void NEAR Pad2Dword(void);
#if CVDEBUG
LOCAL void NEAR DumpDNT(DNT *pDnt);
#endif
extern long lfaBase; /* Base address */
extern int fSameComdat; /* Set if LINSYM to the same COMDAT */
/*
* CodeView signature - if changes notify the developers of the
* following programs:
* - QuickC
* - Resource Compiler - Windows and PM
* - CodeView and its utilities
*/
char szSignature[4] = "NB05";
RBTYPE rhteDebSrc; /* Class "DEBSRC" virt addr */
RBTYPE rhteDebSym; /* Class "DEBSYM" virt addr */
RBTYPE rhteDebTyp; /* Class "DEBTYP" virt addr */
RBTYPE rhteTypes;
RBTYPE rhteSymbols;
RBTYPE rhte0Types;
RBTYPE rhte0Symbols;
LOCAL SBTYPE sbLastModule; /* Name of THEADR last observed */
#if NOT CVVERSION
LOCAL long lfaDebHdr; /* Position of section table */
LOCAL long lfaSegMod;
#endif
LOCAL WORD dntMax; // DNT table size
LOCAL WORD dntMac; // Count of DNT entries in table
LOCAL DNT FAR *rgDnt; // Table of DNT entries
LOCAL DWORD FAR *fileBase; // Table of offsets to source file info
LOCAL RAPAIR FAR *raSeg; // Table of physical starting and ending offsets
// of the contribution to the logical segments
LOCAL WORD FAR *segNo; // Table of physical segment indicies
LOCAL WORD cMac; // Current number of elements in the above tables
#ifdef CVPACK_MONDO
#define CVPACK_SHARED 1
#define REVERSE_MODULE_ORDER_FOR_CVPACK 1
#else
#define CVPACK_SHARED 0
#define REVERSE_MODULE_ORDER_FOR_CVPACK 0
#endif
//these macros help to make the source not so cluttered with #ifdefs...
#if CVPACK_SHARED
#define IF_NOT_CVPACK_SHARED(x)
#define WriteCopy(x,y) WriteSave(TRUE, x, y)
#define WriteNocopy(x,y) WriteSave(FALSE, x, y)
#define FTELL_BSRUNFILE() lposCur
#define LINK_TRACE(x)
// cvpack might read parts of the header more than once, we use this
// constant to ensure that at least CB_HEADER_SAVE bytes are always
// available to be re-read by cvpack
#define CB_HEADER_SAVE 128
void WriteSave(FTYPE fCopy, void *pv, UINT cb);
void WriteFlushSignature(void);
void WriteFlushAll(void);
// cvpack cached blocks...
typedef struct _BL
{
long lpos; // position of this block in the file
BYTE * pb; // pointer to bytes in this block
} BL;
#define iblNil (-1)
static long lposCur; // current position in the file
static long lposMac; // size of the file
static long iblLim; // number of blocks used
static long iblCur; // current block we are reading
static long iblMac; // number of blocks allocated
static long cbRealBytes; // number of bytes actually written to the file
static int ichCur; // index within the current block
static int cbCur; // number of bytes left in the current block
static BL *rgbl; // array of buffered write blocks
// number of bytes in a particular block
__inline int CbIbl(int ibl)
{
// compute the difference between this block and the next block
// unless this is the last block then use lposMac
if (ibl == iblLim - 1)
return lposMac - rgbl[ibl].lpos;
else
return rgbl[ibl+1].lpos - rgbl[ibl].lpos;
}
#define C_BL_INIT 256
#else
#define IF_NOT_CVPACK_SHARED(x) x
#define WriteCopy(x,y) WriteExe(x,y)
#define WriteNocopy(x,y) WriteExe(x,y)
#define FTELL_BSRUNFILE() ftell(bsRunfile)
#define LINK_TRACE(x)
#endif
#if CVDEBUG
LOCAL void NEAR DumpDNT(DNT *pDnt)
{
if (pDnt == NULL)
return;
fprintf(stdout, "iMod = %d(0x%x)", pDnt->iMod, pDnt->iMod);
switch (pDnt->sst)
{
case SSTMODULES:
case SSTMODULES4:
fprintf(stdout, " SSTMODULES: ");
break;
case SSTTYPES:
case SSTTYPES4:
fprintf(stdout, " SSTYPES: ");
break;
case SSTPUBLICS:
case SSTPUBLICS4:
fprintf(stdout, " SSTPUBLICS: ");
break;
case SSTPUBLICSYM:
fprintf(stdout, " SSTPUBLICSYM: ");
break;
case SSTSYMBOLS:
case SSTSYMBOLS4:
fprintf(stdout, " SSTSYMBOLS: ");
break;
case SSTALIGNSYM:
fprintf(stdout, " SSTALIGNSYM: ");
break;
case SSTSRCLINES:
case SSTNSRCLINES:
case SSTSRCLNSEG:
fprintf(stdout, " SSTSRCLINES: ");
break;
case SSTSRCMODULE:
fprintf(stdout, " SSTSRCMODULE: ");
break;
case SSTLIBRARIES:
case SSTLIBRARIES4:
fprintf(stdout, " SSTLIBRARIES: ");
break;
case SSTGLOBALSYM:
fprintf(stdout, " SSTGLOBALSYM: ");
break;
case SSTGLOBALPUB:
fprintf(stdout, " SSTGLOBALPUB: ");
break;
case SSTGLOBALTYPES:
fprintf(stdout, " SSTGLOBALTYPES: ");
break;
case SSTMPC:
fprintf(stdout, " SSTMPC: ");
break;
case SSTSEGMAP:
fprintf(stdout, " SSTSEGMAP: ");
break;
case SSTSEGNAME:
fprintf(stdout, " SSTSEGNAME: ");
break;
case SSTIMPORTS:
fprintf(stdout, " SSTIMPORTS: ");
break;
default:
fprintf(stdout, " UNKNOWN !?!: ");
break;
}
fprintf(stdout, "file offset 0x%lx; size 0x%x\r\n",
lfaBase+pDnt->lfo, pDnt->cb);
}
#endif
#if SRCDEBUG
LOCAL void NEAR DumpSrcLines(DWORD vLines)
{
CVSRC cvSrc;
CVGSN cvGsn;
CVLINE cvLine;
DWORD curSrc;
DWORD curGsn;
DWORD curLine;
SBTYPE fileName;
DWORD i;
WORD j;
fprintf(stdout, "\r\nList at %lx\r\n\r\n", vLines);
for (curSrc = vLines; curSrc != 0L; curSrc = cvSrc.vpNext)
{
memcpy(&cvSrc, mapva(curSrc, FALSE), sizeof(CVSRC));
memcpy(fileName, mapva(cvSrc.vpFileName, FALSE), cvSrc.cbName);
fileName[cvSrc.cbName] = '\0';
fprintf(stdout, "'%s' --> code segments: %lu; source lines: %lu\r\n", fileName, cvSrc.cSegs, cvSrc.cLines);
for (curGsn = cvSrc.vpGsnFirst; curGsn != 0L; curGsn = cvGsn.vpNext)
{
memcpy(&cvGsn, mapva(curGsn, FALSE), sizeof(CVGSN));
fprintf(stdout, " Logical segment %d; source lines: %d; start: %lx; end: %lx\r\n", cvGsn.seg, cvGsn.cLines, cvGsn.raStart, cvGsn.raEnd);
for (curLine = cvGsn.vpLineFirst, i = 1L; curLine != 0L; curLine = cvLine.vpNext)
{
memcpy(&cvLine, mapva(curLine, FALSE), sizeof(CVLINE));
for (j = 0; j < cvLine.cPair; j++, i++)
fprintf(stdout, " %8lu: %u:%lx\r\n", i, cvLine.rgLn[j], cvLine.rgOff[j]);
}
}
}
}
#endif
/****************************************************************
* *
* Initialize variables for symbolic debug processing. *
* Pass 1. *
* *
****************************************************************/
void NEAR InitDeb1 (void)
{
#if ODOS3EXE
if (vfDSAlloc)
{
OutWarn(ER_dbgdsa);
vfDSAlloc = FALSE;
}
#endif
#if FEXEPACK
if (fExePack)
{
OutWarn(ER_dbgexe);
fExePack = FALSE;
}
#endif
}
void InitDbRhte ()
{
PROPSYMLOOKUP((BYTE *) "\006DEBTYP", ATTRNIL, TRUE);
rhteDebTyp = vrhte;
PROPSYMLOOKUP((BYTE *) "\006DEBSYM", ATTRNIL, TRUE);
rhteDebSym = vrhte;
PROPSYMLOOKUP((BYTE *) "\006 TYPES", ATTRNIL, TRUE);
rhte0Types = vrhte;
PROPSYMLOOKUP((BYTE *) "\010 SYMBOLS", ATTRNIL, TRUE);
rhte0Symbols = vrhte;
PROPSYMLOOKUP((BYTE *) "\007$$TYPES", ATTRNIL, TRUE);
rhteTypes = vrhte;
PROPSYMLOOKUP((BYTE *) "\011$$SYMBOLS", ATTRNIL, TRUE);
rhteSymbols = vrhte;
}
LOCAL void NEAR Pad2Dword(void)
{
WORD cb; // Number of bytes to write
static DWORD dwZero;
// Calculate needed padding
cb = (WORD)(sizeof(DWORD)-((WORD) FTELL_BSRUNFILE() % sizeof(DWORD)));
if (cb != sizeof(DWORD))
WriteCopy(&dwZero, cb);
}
/*** GetName - get symbol associated with given property cell
*
* Purpose:
* Find the symbol which has given property.
*
* Input:
* - ahte - pointer to property cell
* - pBuf - pointer to ASCII buffer
*
* Output:
* No explicit value is passed. If symbol is found the it is
* copied into buffer
*
* Exceptions:
* None.
*
* Notes:
* This functional duplicate of GetPropName, but we want to
* call both function as near.
*
*************************************************************************/
void NEAR GetName(AHTEPTR ahte, BYTE *pBuf)
{
while(ahte->attr != ATTRNIL)
ahte = (AHTEPTR ) FETCHSYM(ahte->rhteNext, FALSE);
FMEMCPY((char FAR *) pBuf, ahte->cch, B2W(ahte->cch[0]) + 1);
if (B2W(pBuf[0]) < SBLEN)
pBuf[pBuf[0] + 1] = '\0';
else
pBuf[pBuf[0]] = '\0';
}
/*** DebPublic - prepare symbols for debugger
*
* Purpose:
* When the /CODEVIEW option is used then all PUBDEFs and COMDEFs
* defined in a given object file are linked into one list. This
* function adds one symbol to the list and updates the combined
* size of symbols
*
* Input:
* vrprop - virtual pointer to symbol descriptor
* rt - OMF record type
*
* Output:
* No explicit value is returned.
* Side effects:
* - symbol is attached to the module symbol list
*
* Exceptions:
* None.
*
* Notes:
* Symbols are placed on the list in reverse order of their apperance
* in the object file.
*
*************************************************************************/
void DebPublic(RBTYPE vrprop, WORD rt)
{
APROPFILEPTR apropFile; // Pointer to file entry
APROPNAMEPTR apropName; // Real pointer to PUBDEF descriptor
APROPUNDEFPTR apropUndef; // Real pointer to COMDEF descriptor
APROPALIASPTR apropAlias; // Real pointer to ALIAS descriptor
RBTYPE symNext; // Virtual pointer to the next symbol
// Update the appropriate field in the current file symtab entry
apropFile = ((APROPFILEPTR ) FETCHSYM(vrpropFile, TRUE));
symNext = apropFile->af_publics;
apropFile->af_publics = vrprop;
apropName = (APROPNAMEPTR) FETCHSYM(vrprop, TRUE);
if (TYPEOF(rt) == PUBDEF)
apropName->an_sameMod = symNext;
else if (TYPEOF(rt) == COMDEF)
{
apropUndef = (APROPUNDEFPTR) apropName;
apropUndef->au_sameMod = symNext;
}
else if (TYPEOF(rt) == ALIAS)
{
apropAlias = (APROPALIASPTR) apropName;
apropAlias->al_sameMod = symNext;
}
}
LOCAL WORD NEAR IsDebTyp (prop)
APROPSNPTR prop; /* Pointer to segment record */
{
return(prop->as_attr == ATTRLSN && prop->as_rCla == rhteDebTyp);
}
LOCAL WORD NEAR IsDebSym (prop)
APROPSNPTR prop; /* Pointer to segment record */
{
return(prop->as_attr == ATTRLSN && prop->as_rCla == rhteDebSym);
}
/*** DoDebSrc - store source line information
*
* Purpose:
* Stores source line information from object file.
*
* Input:
* No explicit value is passed.
*
* Global variables:
* - vaCVMac - virtual pointer to the free space in the CV info buffer
*
* Output:
* Returns TRUE if the cv info has been stored in the VM ,or FALSE otherwise.
* Side effects:
* - source line information is stored in the VM
*
* Exceptions:
* More than 32Mb of CV information - dispaly error and quit
*
* Notes:
* None.
*
*************************************************************************/
#pragma check_stack(on)
WORD DoDebSrc(void)
{
WORD cbRecSav; // LINNUM record size
APROPFILEPTR apropFile; // Current object file property cell
static SATYPE prevGsn = 0; // GSN of previous LINNUM record
GSNINFO gsnInfo; // GSN info for this LINNUM
static CVSRC FAR *pCurSrc; // Pointer to the current file source info
CVGSN FAR *pCurGsn; // Pointer to the current code segment descriptor
CVGSN FAR *pcvGsn; // Real pointer to the code segment descriptor
CVLINE FAR *pCurLine; // Pointer to the current offset/line pair bucket
RATYPE ra = 0; // Offset
WORD line; // Line number
RATYPE raPrev; // Offset of the previous line
WORD fChangeInSource;
WORD fComdatSplit;
DWORD gsnStart; // Start of this gsn
APROPSNPTR apropSn;
WORD align;
WORD threshold;
#if !defined( M_I386 ) && !defined( _WIN32 )
SBTYPE nameBuf;
#endif
cbRecSav = cbRec;
if (!GetGsnInfo(&gsnInfo))
return(FALSE);
// If LINNUM record is empty, don't do anything
if (cbRec == 1)
return(FALSE);
apropFile = (APROPFILEPTR ) FETCHSYM(vrpropFile, TRUE);
// If there is a new source file allocate new CVSRC structure
// and link it to the current object file descriptor
fChangeInSource = (WORD) (apropFile->af_Src == 0 || !SbCompare(sbModule, sbLastModule,TRUE));
if (fChangeInSource)
{
#if CVDEBUG
sbModule[sbModule[0]+1]='\0';
sbLastModule[sbLastModule[0]+1]='\0';
fprintf(stdout, "Change in source file; from '%s' to '%s'\r\n", &sbLastModule[1], &sbModule[1]);
#endif
// Search the list of CVSRC structures for this object
// file and find out if we heave already seen this source file
for (pCurSrc = apropFile->af_Src; pCurSrc;)
{
#if defined(M_I386) || defined( _WIN32 )
if (SbCompare(sbModule, pCurSrc->fname, TRUE))
#else
FMEMCPY((char FAR *) nameBuf, pCurSrc->fname, pCurSrc->fname[0] + 1);
if (SbCompare(sbModule, nameBuf, TRUE))
#endif
break;
else
pCurSrc = pCurSrc->next;
}
if (pCurSrc == NULL)
{
// New source file
pCurSrc = (CVSRC FAR *) GetMem(sizeof(CVSRC));
pCurSrc->fname = GetMem(sbModule[0] + 1);
FMEMCPY(pCurSrc->fname, (char FAR *) sbModule, sbModule[0] + 1);
if (apropFile->af_Src == NULL)
apropFile->af_Src = pCurSrc;
else
apropFile->af_SrcLast->next = pCurSrc;
apropFile->af_SrcLast = pCurSrc;
}
else
{
// We have already seen this source file
}
memcpy(sbLastModule, sbModule, B2W(sbModule[0]) + 1);
}
else
{
// Use descriptor set last time we changed source files
}
// Allocate the new CVGSN structure if any of the following is true
//
// - this is first batch of source lines
// - there is a change in GSNs
// - there is a change in source file
// - we have source lines for explicitly allocated COMDAT
// In this last case we assume that the begin portion of a
// given logical segment (gsn) has been filled with contributions
// from many object files. Because COMDATs are allocated after all
// the object files are read, then adding source
// lines of COMDAT to the source lines of preceeding LEDATA records
// will mask the contributions from other object files, as the picture
// below shows:
//
// +-------------+<--+
// | | |
// | LEDATA from | |
// | a.obj | |
// | | |
// +-------------+ |
// | | | Without splitting into fake CVGSN
// | LEDATA from | \ the source line for a.obj will
// | b.obj | / hide the LEDATA contribution from b.obj
// | | |
// +-------------+ |
// | | |
// | COMDAT from | |
// | a.obj | |
// | | |
// +-------------+<--+
// | |
// | COMDAT from |
// | b.obj |
// | |
// +-------------+
//
// This will be unnecessary only if COMDAT from a.obj immediately
// follows LEDATA from a.obj
fComdatSplit = FALSE;
pCurGsn = pCurSrc->pGsnLast;
if (pCurGsn)
{
// Assume we will be using the current CVGSN
if (gsnInfo.fComdat)
{
// Source lines from LINSYM - Calculate the threshold
apropSn = (APROPSNPTR ) FETCHSYM(mpgsnrprop[gsnInfo.gsn], FALSE);
if (gsnInfo.comdatAlign)
align = gsnInfo.comdatAlign;
else
align = (WORD) ((apropSn->as_tysn >> 2) & 7);
threshold = 1;
switch (align)
{
case ALGNWRD:
threshold = 2;
break;
#if OMF386
case ALGNDBL:
threshold = 4;
break;
#endif
case ALGNPAR:
threshold = 16;
break;
case ALGNPAG:
threshold = 256;
break;
}
// Check if we have to split CVGSN for this COMDAT
fComdatSplit = !fSameComdat &&
!(apropSn->as_fExtra & COMDAT_SEG) &&
(gsnInfo.comdatRa - pCurGsn->raEnd > threshold);
}
else
{
// Source lines from LINNUM
if (pCurGsn->flags & SPLIT_GSN)
{
// The LINNUM record following the LINSYM record that
// caused CVGSN split - we have to move back on CVGSN
// list until we find first CVGSN not marked as SPLIT_GSN
for (pcvGsn = pCurGsn->prev; pcvGsn != (CVGSN FAR *) pCurSrc;)
{
if (!(pcvGsn->flags & SPLIT_GSN))
break;
else
pcvGsn = pcvGsn->prev;
}
if (pcvGsn == (CVGSN FAR *) pCurSrc)
{
// There are only SPLIT_GSN on the list - make new CVGSN
prevGsn = 0;
}
else
{
// Use the first non SPLIT_GSN CVGSN as current one
pCurGsn = pcvGsn;
}
}
}
}
if ((prevGsn == 0) ||
(mpgsnseg[gsnInfo.gsn] != mpgsnseg[prevGsn]) ||
fChangeInSource ||
fComdatSplit)
{
// Make new CVGSN
// Remember LOGICAL segment
pCurGsn = (CVGSN FAR *) GetMem(sizeof(CVGSN));
pCurGsn->seg = mpgsnseg[gsnInfo.gsn];
// The start and end offset will be derived from line number/offset pairs
pCurGsn->raStart = 0xffffffff;
if (fComdatSplit)
pCurGsn->flags |= SPLIT_GSN;
if (pCurSrc->pGsnFirst == NULL)
{
pCurSrc->pGsnFirst = pCurGsn;
pCurGsn->prev = (CVGSN FAR *) pCurSrc;
}
else
{
pCurSrc->pGsnLast->next = pCurGsn;
pCurGsn->prev = pCurSrc->pGsnLast;
}
pCurSrc->pGsnLast = pCurGsn;
pCurSrc->cSegs++;
#if CVDEBUG
sbModule[sbModule[0]+1] = '\0';
fprintf(stdout, "New code segment in '%s'; prevGsn = %x; newGsn = %x %s\r\n", &sbModule[1], prevGsn, gsnInfo.gsn, fComdatSplit ? "COMDAT split" : "");
#endif
prevGsn = gsnInfo.gsn;
}
// Get the offset/line bucket
if (pCurGsn->pLineFirst == NULL)
{
pCurLine = (CVLINE FAR *) GetMem(sizeof(CVLINE));
pCurGsn->pLineFirst = pCurLine;
pCurGsn->pLineLast = pCurLine;
}
else
pCurLine = pCurGsn->pLineLast;
// Fill in offset/line bucket
if (gsnInfo.fComdat)
gsnStart = gsnInfo.comdatRa;
else
gsnStart = mpgsndra[gsnInfo.gsn] - mpsegraFirst[pCurGsn->seg];
raPrev = 0xffff;
while (cbRec > 1) // While not at checksum
{
GetLineOff(&line, &ra);
ra += gsnStart;
// We have to eliminate line pairs with same ra (for MASM 5.1)
if(ra == raPrev)
continue;
raPrev = ra;
// Remember the smallest LOGICAL offset for source line
if (ra < pCurGsn->raStart)
pCurGsn->raStart = ra;
if (line != 0)
{
if (pCurLine->cPair >= CVLINEMAX)
{
pCurLine->next = (CVLINE FAR *) GetMem(sizeof(CVLINE));
pCurLine = pCurLine->next;
pCurGsn->pLineLast = pCurLine;
}
pCurLine->rgOff[pCurLine->cPair] = ra;
pCurLine->rgLn[pCurLine->cPair] = line;
pCurLine->cPair++;
pCurSrc->cLines++;
pCurGsn->cLines++;
}
}
// Remember last line LOGICAL offset
pCurGsn->raEnd = ra;
#if CVDEBUG
fprintf(stdout, "New source lines for the 0x%x logical code segment; lines %d\r\n start offset %x:%lx end offset %x:%lx; physical address of logical segment %x:%lx\r\n",
pCurGsn->seg, pCurGsn->cLines, pCurGsn->seg, pCurGsn->raStart, pCurGsn->seg, pCurGsn->raEnd, mpsegsa[pCurGsn->seg], mpsegraFirst[pCurGsn->seg]);
#endif
// If /LINENUMBERS and list file open, back up
if (vfLineNos && fLstFileOpen)
{
#if ALIGN_REC
pbRec += (cbRec - cbRecSav);
#else
fseek(bsInput, (long)cbRec - cbRecSav, 1);
#endif
cbRec = cbRecSav;
}
return(TRUE);
}
#pragma check_stack(off)
/*** CheckTables - check space in table used by OutSrcModule
*
* Purpose:
* While building the new source module subsection linker needs
* to store a lot of information about given source file. Since
* we can't predict how many source files were compiled to obtain
* this object module or to how many logical segments this object
* module contributes code we have to dynamically resize appropriate
* tables.
*
* Input:
* cFiles - number of source files compiled to produce
* this object module
* cSegs - number of logical segments this object module
* contributes to.
*
* Output:
* No explicit value is returned. As a side effect the following
* tables are allocated or reallocated:
*
* fileBase - table of offsets to source file info
* raSeg - table of physical starting and ending offsets
* of the contribution to the logical segments
* segNo - table of physical segment indicies
*
* Exceptions:
* Memory allocation problems - fatal error and exit.
*
* Notes:
* When we reallocated the tables we don't have to copy
* their old content, because it was used in the previous
* object module.
*
*************************************************************************/
LOCAL void NEAR CheckTables(WORD cFiles, WORD cSegs)
{
WORD cCur;
cCur = (WORD) (cFiles < cSegs ? cSegs : cFiles);
if (cCur > cMac)
{
// We have to reallocate tables or allocate for the first time
if (fileBase)
FFREE(fileBase);
if (raSeg)
FFREE(raSeg);
if (segNo)
FFREE(segNo);
fileBase = (DWORD FAR *) GetMem(cCur*sizeof(DWORD));
raSeg = (RAPAIR FAR *) GetMem(cCur*sizeof(RAPAIR));
segNo = (WORD FAR *) GetMem(cCur*sizeof(WORD));
cMac = cCur;
}
}
/*** OutSrcModule - write CV source module
*
* Purpose:
* Create the CV 4.00 format source module descrbing the source line
* number to addressing mapping information for one object file
*
* Input:
* - pSrcLines - the list of source file information blocks
*
* Output:
* Total size of the subsection in bytes.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutSrcModule(CVSRC FAR *pSrcLines)
{
CVSRC FAR *pCurSrc; // Pointer to current source file
CVGSN FAR *pCurGsn; // Pointer to current code segment
CVLINE FAR *pLine; // Pointer to source line bucket
WORD cFiles; // Number of source files
WORD cSegs; // Number of code segments
WORD xFile;
WORD xSeg;
DWORD sizeTotal; // Size of source subsection
DWORD srcLnBase;
WORD counts[2];
CVLINE FAR *pTmp;
#if SRCDEBUG
DumpSrcLines(vaLines);
#endif
// Count total number of source files, total number of code segments
for (pCurSrc = pSrcLines, cFiles = 0, cSegs = 0; pCurSrc; cFiles++, pCurSrc = pCurSrc->next)
cSegs += pCurSrc->cSegs;
CheckTables(cFiles, cSegs);
sizeTotal = (DWORD) (2*sizeof(WORD) + cFiles*sizeof(DWORD) +
cSegs*(sizeof(raSeg[0]) + sizeof(WORD)));
sizeTotal = Round2Dword(sizeTotal);
// Make second pass througth the source files and fill in
// source module header
for (pCurSrc = pSrcLines, xFile = 0, xSeg = 0; xFile < cFiles && pCurSrc; xFile++, pCurSrc = pCurSrc->next)
{
fileBase[xFile] = sizeTotal;
// Add the size of this source file information:
//
// Source file header:
//
// +------+------+------------+--------------+------+-------------+
// | WORD | WORD | cSeg*DWORD | 2*cSeg*DWORD | BYTE | cbName*BYTE |
// +------+------+------------+--------------+------+-------------+
//
sizeTotal += (2*sizeof(WORD) +
pCurSrc->cSegs*(sizeof(DWORD) + sizeof(raSeg[0])) +
sizeof(BYTE) + pCurSrc->fname[0]);
// Pad to DWORD boundary
sizeTotal = Round2Dword(sizeTotal);
// Walk code segment list
for (pCurGsn = pCurSrc->pGsnFirst; pCurGsn; pCurGsn = pCurGsn->next, xSeg++)
{
raSeg[xSeg].raStart = pCurGsn->raStart;
raSeg[xSeg].raEnd = pCurGsn->raEnd;
segNo[xSeg] = pCurGsn->seg;
// Add size of the offset/line table
//
// +------+------+-------------+------------+
// | WORD | WORD | cLine*DWORD | cLine*WORD |
// +------+------+-------------+------------+
sizeTotal += (2*sizeof(WORD) +
pCurGsn->cLines*(sizeof(DWORD) + sizeof(WORD)));
// Pad to DWORD boundary
sizeTotal = Round2Dword(sizeTotal);
}
}
// Write source module header
counts[0] = cFiles;
counts[1] = cSegs;
WriteCopy(counts, sizeof(counts));
WriteCopy(fileBase, cFiles*sizeof(DWORD));
WriteCopy(raSeg, cSegs*sizeof(RAPAIR));
WriteCopy(segNo, cSegs*sizeof(WORD));
// Pad to DWORD boundary
Pad2Dword();
// Make third pass througth the source files and fill in
// the source file header and write offset/line pairs
for (pCurSrc = pSrcLines, srcLnBase = fileBase[0]; pCurSrc != NULL;
pCurSrc = pCurSrc->next, xFile++)
{
// Add the size of source file header:
//
// +------+------+------------+--------------+------+-------------+
// | WORD | WORD | cSeg*DWORD | 2*cSeg*DWORD | BYTE | cbName*BYTE |
// +------+------+------------+--------------+------+-------------+
//
srcLnBase += (2*sizeof(WORD) +
pCurSrc->cSegs*(sizeof(DWORD) + sizeof(raSeg[0])) +
sizeof(BYTE) + pCurSrc->fname[0]);
// Round to DWORD boundary
srcLnBase = Round2Dword(srcLnBase);
// Walk code segment list and store base offsets for source
// line offset/line pairs and record start/stop offsets of
// code segments
for (xSeg = 0, pCurGsn = pCurSrc->pGsnFirst; pCurGsn != NULL;
pCurGsn = pCurGsn->next, xSeg++)
{
fileBase[xSeg] = srcLnBase;
srcLnBase += (2*sizeof(WORD) +
pCurGsn->cLines*(sizeof(DWORD) + sizeof(WORD)));
// Round to DWORD boundary
srcLnBase = Round2Dword(srcLnBase);
raSeg[xSeg].raStart = pCurGsn->raStart;
raSeg[xSeg].raEnd = pCurGsn->raEnd;
}
// Write source file header
counts[0] = (WORD) pCurSrc->cSegs;
counts[1] = 0;
WriteCopy(counts, sizeof(counts));
WriteCopy(fileBase, pCurSrc->cSegs*sizeof(DWORD));
WriteCopy(raSeg, pCurSrc->cSegs*sizeof(RAPAIR));
WriteCopy(pCurSrc->fname, pCurSrc->fname[0] + 1);
// Pad to DWORD boundary
Pad2Dword();
// Walk code segment list and write offsets/line pairs
for (pCurGsn = pCurSrc->pGsnFirst; pCurGsn != NULL; pCurGsn = pCurGsn->next)
{
// Write segment index and number of offset/line pairs
counts[0] = pCurGsn->seg;
counts[1] = pCurGsn->cLines;
WriteCopy(counts, sizeof(counts));
// Write offsets
for (pLine = pCurGsn->pLineFirst; pLine != NULL; pLine = pLine->next)
WriteCopy(&(pLine->rgOff), pLine->cPair * sizeof(DWORD));
// Write line numbers
for (pLine = pCurGsn->pLineFirst; pLine != NULL; pLine = pLine->next)
WriteCopy(&(pLine->rgLn), pLine->cPair * sizeof(WORD));
// Pad to DWORD boundary
Pad2Dword();
// Free memory
for (pLine = pCurGsn->pLineFirst; pLine != NULL;)
{
pTmp = pLine->next;
FFREE(pLine);
pLine = pTmp;
}
}
}
return(sizeTotal);
}
/*** SaveCode - save code segment information in MODULES entry
*
* Purpose:
* For every module (.OBJ file) save the information about code segments
* this module contributes to. COMDATs are threated as contibutions to
* the logical segment, so each gets its entry in the CVCODE list attached
* to the given .OBJ file (module).
*
* Input:
* gsn - global segment index of logical segment to which this module
* contributes
* cb - size (in bytes) of contribution
* raInit - offset of the contribution inside the logical segment; this
* nonzero only for COMDATs.
*
* Output:
* No explicit value is returned. The list of CVCODE attached to the
* .OBJ file (module) is updated.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
void SaveCode(SNTYPE gsn, DWORD cb, DWORD raInit)
{
CVCODE FAR *pSegCur; // Pointer to the current code segment
APROPFILEPTR apropFile;
apropFile = (APROPFILEPTR) vrpropFile;
// Save code segment if module has CV info
pSegCur = (CVCODE FAR *) GetMem(sizeof(CVCODE));
// Store LOGICAL segment, offset and size of the contribution
pSegCur->seg = mpgsnseg[gsn];
if (raInit != 0xffffffffL)
pSegCur->ra = raInit;
else
pSegCur->ra = mpgsndra[gsn] - mpsegraFirst[mpgsnseg[gsn]];
pSegCur->cb = cb;
// Add to the CV code list
if (apropFile->af_Code == NULL)
apropFile->af_Code = pSegCur;
else
apropFile->af_CodeLast->next = pSegCur;
apropFile->af_CodeLast = pSegCur;
apropFile->af_cCodeSeg++;
}
/****************************************************************
* *
* DO SYMBOLIC DEBUG STUFF FOR MODULE JUST PROCESSED. *
* Pass 2. *
* *
****************************************************************/
void DebMd2(void)
{
APROPFILEPTR apropFile;
sbLastModule[0] = 0; /* Force recognition of new THEADR */
apropFile = (APROPFILEPTR) vrpropFile;
if (apropFile->af_cvInfo)
++segDebLast;
}
/*** PutDnt - store subsection directory entry in the table
*
* Purpose:
* Copy current subsection directory to the DNT table. If no more
* room in the table reallocate table doubling its size.
*
* Input:
* - pDnt - pointer to the current directory entry
*
* Output:
* No explicit value is returned.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL void NEAR PutDnt(DNT *pDnt)
{
WORD newSize;
if (dntMac >= dntMax)
{
if(dntMax)
{
newSize = dntMax << 1;
#if defined(M_I386) || defined( _WIN32 )
{
BYTE *pb = REALLOC(rgDnt, newSize * sizeof(DNT));
if (!pb)
Fatal(ER_memovf);
rgDnt = (DNT *)pb;
}
#else
rgDnt = (DNT FAR *) _frealloc(rgDnt, newSize * sizeof(DNT));
#endif
}
else
{
newSize = DNT_START;
rgDnt = (DNT*) GetMem ( newSize * sizeof(DNT) );
}
if (rgDnt == NULL)
Fatal(ER_memovf);
dntMax = newSize;
}
rgDnt[dntMac] = *pDnt;
dntMac++;
#if CVDEBUG
DumpDNT(pDnt);
#endif
}
#pragma check_stack(on)
/*** OutModule - write out module subsection
*
* Purpose:
* Write into the executable file the module subsections for all
* object files compiled with CV information. Only CV 4.0 format.
*
* Input:
* - apropFile - pointer to the current object file descriptor
*
* Output:
* No explicit value is retuned.
* Side effects:
* - module subsections in executable file
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutModule(APROPFILEPTR apropFile)
{
SBTYPE sbName;
SSTMOD4 module;
CVCODE FAR *pSegCur;
CODEINFO codeOnt;
WORD cOnt;
module.ovlNo = (WORD) apropFile->af_iov;
module.iLib = (WORD) (apropFile->af_ifh + 1);
module.cSeg = apropFile->af_cCodeSeg;
module.style[0] = 'C';
module.style[1] = 'V';
// Get file name or library module name
if (apropFile->af_ifh != FHNIL && apropFile->af_rMod != RHTENIL)
GetName((AHTEPTR) apropFile->af_rMod, sbName);
else
GetName((AHTEPTR) apropFile, sbName);
#if CVDEBUG
sbName[sbName[0]+1] = '\0';
fprintf(stdout, "\r\nCV info for %s\r\n", &sbName[1]);
#endif
// Write sstModule header followed by the list of code contributions
WriteCopy(&module, sizeof(SSTMOD4));
pSegCur = apropFile->af_Code;
codeOnt.pad = 0;
for (cOnt = 0; cOnt < module.cSeg && pSegCur; cOnt++, pSegCur = pSegCur->next)
{
codeOnt.seg = pSegCur->seg;
codeOnt.off = pSegCur->ra;
codeOnt.cbOnt = pSegCur->cb;
WriteCopy(&codeOnt, sizeof(CODEINFO));
#if CVDEBUG
fprintf(stdout, " Logical segment %d; offset 0x%lx; size 0x%lx\r\n",
codeOnt.seg, codeOnt.off, codeOnt.cbOnt);
#endif
}
// Write object file name
WriteCopy(sbName, B2W(sbName[0]) + 1);
return(sizeof(SSTMOD4) + B2W(sbName[0]) + 1 + module.cSeg * sizeof(CODEINFO));
}
/*** OutPublics - write sstPublics subsection
*
* Purpose:
* Write sstPublics subsection of the CV information. The subsection
* conforms to the new CV 4.0 format.
*
* Input:
* - firstPub - virtual pointer to the list of public symbols defined
* in a given object module
*
* Output:
* Total size of the subsection in bytes.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutPublics(RBTYPE firstPub)
{
PUB16 pub16; // CV public descriptor - 16-bit
PUB32 pub32; // CV public descriptor - 32-bit
APROPNAMEPTR apropPub; // Real pointer to public descriptor
APROPSNPTR apropSn; // Real pointer to segment descriptor
RBTYPE curPub; // Virtual pointer to the current public symbol
WORD f32Bit; // TRUE if public defined in 32-bit segment
DWORD sizeTotal; // Total size of subsection
SNTYPE seg; // Symbol base
RATYPE ra; // Symbol offset
WORD CVtype; // CV info type index
SBTYPE sbName; // Public symbol
char *pPub;
WORD len;
// Initialize
curPub = firstPub;
pub16.idx = S_PUB16;
pub32.idx = S_PUB32;
sizeTotal = 1L;
WriteCopy(&sizeTotal, sizeof(DWORD));// sstPublicSym signature
sizeTotal = sizeof(DWORD);
while (curPub != 0L)
{
f32Bit = FALSE;
apropPub = (APROPNAMEPTR) FETCHSYM(curPub, FALSE);
curPub = apropPub->an_sameMod;
if (apropPub->an_attr == ATTRALIAS)
apropPub = (APROPNAMEPTR) FETCHSYM(((APROPALIASPTR) apropPub)->al_sym, FALSE);
if (apropPub->an_attr != ATTRPNM)
continue;
ra = apropPub->an_ra;
if (apropPub->an_gsn) // If not absolute symbol
{
seg = mpgsnseg[apropPub->an_gsn];
// If this is a .com program and the segment is the one
// moved by 0x100, adjust accordingly the SegMap entry
if(seg == segAdjCom)
{
#if FALSE
GetName((AHTEPTR) apropPub, sbName);
sbName[sbName[0]+1] = '\0';
fprintf(stdout, "\r\nCorrecting public %s : %lx -> %lx", sbName+1, ra, ra+0x100);
fflush(stdout);
#endif
ra += 0x100;
}
CVtype = 0; // Should be this apropPub->an_CVtype
// but cvpack can't handle it.
#if O68K
if (iMacType == MAC_NONE)
#endif
ra -= mpsegraFirst[seg];
#if CVDEBUG
GetName((AHTEPTR) apropPub, sbName);
sbName[sbName[0]+1] = '\0';
fprintf(stdout, "'%s' --> logical address %2x:%lx; physical address %2x:%lx\r\n",
&sbName[1], seg, ra, mpsegsa[seg], apropPub->an_ra);
#endif
apropSn = (APROPSNPTR) FETCHSYM(mpgsnrprop[apropPub->an_gsn], FALSE);
#if EXE386
f32Bit = TRUE;
#else
f32Bit = (WORD) Is32BIT(apropSn->as_flags);
#endif
}
else
{
seg = 0; // Else no base
CVtype = T_ABS; // CV absolute symbol type
f32Bit = (WORD) (ra > LXIVK);
}
GetName((AHTEPTR) apropPub, sbName);
if (f32Bit)
{
pub32.len = (WORD) (sizeof(PUB32) + B2W(sbName[0]) + 1 - sizeof(WORD));
pub32.off = ra;
pub32.seg = seg;
pub32.type = CVtype;
pPub = (char *) &pub32;
len = sizeof(PUB32);
}
else
{
pub16.len = (WORD) (sizeof(PUB16) + B2W(sbName[0]) + 1 - sizeof(WORD));
pub16.off = (WORD) ra;
pub16.seg = seg;
pub16.type = CVtype;
pPub = (char *) &pub16;
len = sizeof(PUB16);
}
WriteCopy(pPub, len);
// Output length-prefixed name
WriteCopy(sbName, sbName[0] + 1);
sizeTotal += (len + B2W(sbName[0]) + 1);
}
return(sizeTotal);
}
/*** OutSegMap - write segment map
*
* Purpose:
* This subsection was introduced in CV 4.0. This subsection
* maps the logical segments to physical segments. It also gives
* the names and sizes of each logical segment.
*
* Input:
* No explicit value is passed.
* Global variables:
* - mpsegsa - table mapping logical segment number to its physical
* segment number or address
* - mpsaflags - table mapping physicla segment index to its flags
* - mpseggsn - table mapping the logical segment index to its global
* segment index
* - mpgsnprop - table mapping global segment index to its symbol table
* descriptor
* - mpggrgsn - table mapping global group index to global segment index
* - mpggrrhte - table mapping global group index to group name
*
* Output:
* Function returns the size of segment map.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutSegMap(void)
{
SEGTYPE seg; // Logical segment index
APROPSNPTR apropSn; // Real pointer to logical segment descriptor
SATYPE sa; // Physical segment index
WORD iName; // Index to free space in segment name table
DWORD sizeTotal; // Total size of the subsection
SEGINFO segInfo; // CV segment descriptor
SBTYPE segName; // Segment name
AHTEPTR ahte; // Real pointer to symbol table hash table
RBTYPE vpClass; // Virtual pointer to class descriptor
GRTYPE ggr; // Global group index
SATYPE saDGroup; // DGroup's sa
WORD counts[2];
iName = 0;
counts[0] = (WORD) (segLast + ggrMac - 1);
counts[1] = (WORD) segLast;
WriteCopy(counts, sizeof(counts));
sizeTotal = sizeof(counts);
saDGroup = mpsegsa[mpgsnseg[mpggrgsn[ggrDGroup]]];
// Write all logical segments
for (seg = 1; seg <= segLast; ++seg)// For all logical segments
{
memset(&segInfo, 0, sizeof(SEGINFO));
if (fNewExe)
segInfo.flags.fSel = TRUE;
sa = mpsegsa[seg];
if (fNewExe)
{
#if EXE386
segInfo.flags.f32Bit = TRUE;
#else
segInfo.flags.f32Bit = (WORD) (Is32BIT(mpsaflags[sa]));
#endif
if (IsDataFlg(mpsaflags[sa]))
{
segInfo.flags.fRead = TRUE;
#if EXE386
if (IsWRITEABLE(mpsaflags[sa]))
#else
if (!(mpsaflags[sa] & NSEXRD))
#endif
segInfo.flags.fWrite = TRUE;
}
else
{
segInfo.flags.fExecute = TRUE;
#if EXE386
if (IsREADABLE(mpsaflags[sa]))
#else
if (!(mpsaflags[sa] & NSEXRD))
#endif
segInfo.flags.fRead = TRUE;
}
}
else
{
if (mpsegFlags[seg] & FCODE)
{
segInfo.flags.fRead = TRUE;
segInfo.flags.fExecute = TRUE;
}
else
{
segInfo.flags.fRead = TRUE;
segInfo.flags.fWrite = TRUE;
}
}
// Look up segment definition
apropSn = (APROPSNPTR) FETCHSYM(mpgsnrprop[mpseggsn[seg]], FALSE);
vpClass = apropSn->as_rCla;
#if OVERLAYS
if (!fNewExe)
segInfo.ovlNbr = apropSn->as_iov;
#endif
// if segment doesn't belong to any group it's ggr is 0
if (apropSn->as_ggr != GRNIL)
segInfo.ggr = (WORD) (apropSn->as_ggr + segLast - 1);
// If segment is a DGROUP member, write DGROUP normalized address
if(apropSn->as_ggr == ggrDGroup)
{
segInfo.sa = saDGroup;
segInfo.phyOff = mpsegraFirst[seg] + ((sa - saDGroup) << 4);
}
else
{
segInfo.sa = sa;
segInfo.phyOff = mpsegraFirst[seg];
}
// If this is a .com program and the segment is the one moved by 0x100
// write all the publics at the original addresses, because the offset
// adjustment will be made in the SegMap table
if(seg == segAdjCom)
{
segInfo.phyOff -= 0x100;
}
segInfo.cbSeg = apropSn->as_cbMx;
GetName((AHTEPTR) apropSn, segName);
if (segName[0] != '\0')
{
segInfo.isegName = iName;
iName += (WORD) (B2W(segName[0]) + 1);
}
else
segInfo.isegName = 0xffff;
ahte = (AHTEPTR) FETCHSYM(vpClass, FALSE);
if (ahte->cch[0] != 0)
{
segInfo.iclassName = iName;
iName += (WORD) (B2W(ahte->cch[0]) + 1);
}
else
segInfo.iclassName = 0xffff;
WriteCopy(&segInfo, sizeof(SEGINFO));
sizeTotal += sizeof(SEGINFO);
}
// Write all groups
for (ggr = 1; ggr < ggrMac; ggr++)
{
memset(&segInfo, 0, sizeof(SEGINFO));
segInfo.flags.fGroup = TRUE;
if (fNewExe)
segInfo.flags.fSel = TRUE;
segInfo.sa = mpsegsa[mpgsnseg[mpggrgsn[ggr]]];
if (fNewExe)
segInfo.cbSeg = mpsacb[segInfo.sa];
else
{
segInfo.cbSeg = 0L;
if (mpggrgsn[ggr] != SNNIL)
{
// If group has members
for (seg = 1; seg <= segLast; seg++)
{
apropSn = (APROPSNPTR) FETCHSYM(mpgsnrprop[mpseggsn[seg]], FALSE);
if (apropSn->as_ggr == ggr)
{
segInfo.cbSeg += apropSn->as_cbMx;
#if OVERLAYS
segInfo.ovlNbr = apropSn->as_iov;
#endif
}
}
}
}
segInfo.isegName = iName;
ahte = (AHTEPTR) FETCHSYM(mpggrrhte[ggr], FALSE);
iName += (WORD) (B2W(ahte->cch[0]) + 1);
segInfo.iclassName = 0xffff;
WriteCopy(&segInfo, sizeof(SEGINFO));
sizeTotal += sizeof(SEGINFO);
}
return(sizeTotal);
}
/*** OutSegNames - write segment name table
*
* Purpose:
* This subsection was introduced in CV 4.0.
* The segment name subsection contains all of the logical segment,
* class and group names. Each name is a zero terminated ASCII string.
*
* Input:
* No explicit value is passed.
* Global variables:
* - mpseggsn - table mapping the logical segment index to its global
* segment index
* - mpgsnprop - table mapping global segment index to its symbol table
* descriptor
* - mpggrrhte - table mapping global group index to group name
*
* Output:
* Function returns the size of segment name table.
*
* Exceptions:
* None.
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutSegNames(void)
{
SEGTYPE seg; // Logical segment index
APROPSNPTR apropSn; // Real pointer to logical segment descriptor
DWORD sizeTotal; // Size of the segment name table
SBTYPE name; // A name
RBTYPE vpClass; // Virtual pointer to class descriptor
GRTYPE ggr; // Global group index
sizeTotal = 0L;
// Write names of all logical segments
for (seg = 1; seg <= segLast; ++seg)
{
// Look up segment definition
apropSn = (APROPSNPTR ) FETCHSYM(mpgsnrprop[mpseggsn[seg]], FALSE);
vpClass = apropSn->as_rCla;
GetName((AHTEPTR) apropSn, name);
WriteCopy(&name[1], B2W(name[0]) + 1);
sizeTotal += (B2W(name[0]) + 1);
GetName((AHTEPTR ) FETCHSYM(vpClass, FALSE), name);
WriteCopy(&name[1], B2W(name[0]) + 1);
sizeTotal += (B2W(name[0]) + 1);
}
// Write names of all groups
for (ggr = 1; ggr < ggrMac; ggr++)
{
GetName((AHTEPTR ) FETCHSYM(mpggrrhte[ggr], FALSE), name);
WriteCopy(&name[1], B2W(name[0]) + 1);
sizeTotal += (B2W(name[0]) + 1);
}
return(sizeTotal);
}
/*** OutSst - write subsections
*
* Purpose:
* For every object file with CV information write its sstModule,
* sstTypes, sstPublics, sstSymbols and sstSrcModule.
* Build subsection directory.
*
* Input:
* No explicit value is passed.
* Global variables used:
* - rprop1stFile - virtual pointer to the first object file descriptor
*
* Output:
* No explicit value is returned.
* Side effects:
* - subsections in the executable file
* - subsection directory in the VM
*
* Exceptions:
* I/O errors - display error message and quit
*
* Notes:
* None.
*
*************************************************************************/
LOCAL void NEAR OutSst(void)
{
APROPFILEPTR apropFile; // Real pointer to file entry
RBTYPE rbFileNext; // Virtual pointer the next file descriptor
struct dnt dntCur; // Current subsection directory entry
CVINFO FAR *pCvInfo; // Pointer to the CV info descriptor
#if CVPACK_SHARED
#if REVERSE_MODULE_ORDER_FOR_CVPACK
RBTYPE rbFileCur;
RBTYPE rbFileLast;
// reverse module list in place
// I've been waiting all my life to actually *need* this code... [rm]
// this will cause us to write the modules tables in REVERSE order
// (this gives better swapping behaviour in the cvpack phase
// because the modules cvpack will visit first will be the ones that
// are still resident...
rbFileCur = rprop1stFile;
rbFileLast = NULL;
while (rbFileCur != NULL)
{
apropFile = (APROPFILEPTR ) FETCHSYM(rbFileCur, TRUE);
rbFileNext = apropFile->af_FNxt;// Get pointer to next file
apropFile->af_FNxt = rbFileLast;
rbFileLast = rbFileCur;
rbFileCur = rbFileNext;
}
rprop1stFile = rbFileLast;
#endif
#endif
rbFileNext = rprop1stFile;
dntCur.iMod = 1;
while (rbFileNext != NULL) // For every module
{
apropFile = (APROPFILEPTR ) FETCHSYM(rbFileNext, TRUE);
rbFileNext = apropFile->af_FNxt;// Get pointer to next file
// Skip this module if no debug info for it
if (!apropFile->af_cvInfo && !apropFile->af_publics && !apropFile->af_Src)
continue;
pCvInfo = apropFile->af_cvInfo;
// sstModules
dntCur.sst = SSTMODULES4;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutModule(apropFile);
PutDnt(&dntCur);
// sstTypes
if (pCvInfo && pCvInfo->cv_cbTyp > 0L)
{
Pad2Dword();
if (apropFile->af_flags & FPRETYPES)
dntCur.sst = SSTPRETYPES;
else
dntCur.sst = SSTTYPES4;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = pCvInfo->cv_cbTyp;
WriteNocopy(pCvInfo->cv_typ, pCvInfo->cv_cbTyp);
IF_NOT_CVPACK_SHARED(FFREE(pCvInfo->cv_typ));
PutDnt(&dntCur);
}
// sstPublics
if (apropFile->af_publics && !fSkipPublics)
{
Pad2Dword();
dntCur.sst = SSTPUBLICSYM;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutPublics(apropFile->af_publics);
PutDnt(&dntCur);
}
// sstSymbols
if (pCvInfo && pCvInfo->cv_cbSym > 0L)
{
Pad2Dword();
dntCur.sst = SSTSYMBOLS4;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = pCvInfo->cv_cbSym;
WriteNocopy(pCvInfo->cv_sym, pCvInfo->cv_cbSym);
IF_NOT_CVPACK_SHARED(FFREE(pCvInfo->cv_sym));
PutDnt(&dntCur);
}
// sstSrcModule
if (apropFile->af_Src)
{
Pad2Dword();
dntCur.sst = SSTSRCMODULE;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutSrcModule(apropFile->af_Src);
PutDnt(&dntCur);
}
dntCur.iMod++;
}
// sstLibraries
Pad2Dword();
dntCur.sst = SSTLIBRARIES4;
dntCur.iMod = (short) 0xffff;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutLibSec();
PutDnt(&dntCur);
// sstSegMap
Pad2Dword();
dntCur.sst = SSTSEGMAP;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutSegMap();
PutDnt(&dntCur);
// sstSegNames
Pad2Dword();
dntCur.sst = SSTSEGNAME;
dntCur.lfo = FTELL_BSRUNFILE() - lfaBase;
dntCur.cb = OutSegNames();
PutDnt(&dntCur);
FFREE(fileBase);
FFREE(raSeg);
FFREE(segNo);
}
#pragma check_stack(off)
/*
* OutLibSec : Output sstLibraries subsection to bsRunfile
*
* Path prefix is stripped from library name.
* If no libraries, don't output anything.
*
* Parameters: none
* Returns: Number of bytes in Libraries subsection
*/
LOCAL int NEAR OutLibSec ()
{
WORD ifh;
AHTEPTR ahte;
int cb = 0;
BYTE *pb;
if (ifhLibMac == 0)
return(0);
// Libraries subsection consists of a list of library
// names which will be indexed by library numbers in the
// sstModules. Those indexes are 1-based.
// cb == 0, use it to write a single byte
WriteCopy(&cb, 1); // 0th entry is null for now
cb++;
for (ifh = 0; ifh < ifhLibMac; ifh++)
{
if (mpifhrhte[ifh] != RHTENIL)
{
ahte = (AHTEPTR) FETCHSYM(mpifhrhte[ifh],FALSE);
#if OSXENIX
pb = GetFarSb(ahte->cch);
#else
pb = StripDrivePath(GetFarSb(ahte->cch));
#endif
}
else
pb = "";
WriteCopy(pb, pb[0] + 1);
cb += 1 + B2W(pb[0]);
}
return(cb);
}
/*** OutDntDir - write subsection directory
*
* Purpose:
* Write subsection directory
*
* Input:
* No explicit value is passed.
* Global variables:
* - dntPageMac - number of VM pages with DNTs
*
* Output:
* Function returns the size of the directory in bytes.
*
* Exceptions:
* I/O problems - display error message and quit
*
* Notes:
* None.
*
*************************************************************************/
LOCAL DWORD NEAR OutDntDir(void)
{
DNTHDR hdr; // Directory header
hdr.cbDirHeader = sizeof(DNTHDR);
hdr.cbDirEntry = sizeof(DNT);
hdr.cDir = dntMac;
hdr.lfoDirNext = 0L;
hdr.flags = 0L;
// Write header
WriteCopy(&hdr, sizeof(DNTHDR));
// Write directory
WriteCopy((char FAR *) rgDnt, dntMac * sizeof(DNT));
FFREE(rgDnt);
return(sizeof(DNTHDR) + dntMac * sizeof(DNT));
}
/*** OutDebSection - allow debugging
*
* Purpose:
* Append to the executable file the CV information. ONLY CV 4.00
* format supported.
*
* Input:
* No explicit value is passed.
* Global variables:
* - too many to list
*
* Output:
* No explicit value is returned.
* Side effects:
* - what do you think ??
*
* Exceptions:
* I/O problems - display error message and quit
*
* Notes:
* None.
*
*************************************************************************/
void OutDebSections(void)
{
long lfaDir; // File address of Directory
DWORD dirSize; // Directory size
long tmp;
#if CVPACK_SHARED
long * plfoDir; // pointer to directory data
fseek(bsRunfile, 0L, 2); // Go to end of file
lfaBase = ftell(bsRunfile); // Remember base address
lposCur = lfaBase; // set current position...
WriteCopy(szSignature, sizeof(szSignature)); // Signature dword
WriteCopy(&tmp, sizeof(tmp)); // Skip lfoDir field
plfoDir = (long *)rgbl[iblLim-1].pb;// remember address of lfoDir
OutSst(); // Output subsections
lfaDir = lposCur; // Remember where directory starts
*plfoDir = lfaDir - lfaBase; // fix up lfoDir field
dirSize = OutDntDir(); // Output subsection directory
WriteCopy(szSignature, sizeof(szSignature));
// Signature dword
tmp = (lfaDir + dirSize + 2*sizeof(DWORD)) - lfaBase;
WriteCopy(&tmp, sizeof(long)); // Distance from EOF to base
// write out the bits that cvpack won't overwrite...
if (fCVpack)
WriteFlushSignature();
else
WriteFlushAll();
cbRealBytes = ftell(bsRunfile); // # of real bytes actually written
lposMac = lposCur;
iblCur = iblNil;
#else
if (fseek(bsRunfile, 0L, 2)) // Go to end of file
Fatal(ER_ioerr, strerror(errno));
lfaBase = FTELL_BSRUNFILE(); // Remember base address
WriteExe(szSignature, sizeof(szSignature));
// Signature dword
if (fseek(bsRunfile,4L,1)) // Skip lfoDir field
Fatal(ER_ioerr, strerror(errno));
OutSst(); // Output subsections
lfaDir = FTELL_BSRUNFILE(); // Remember where directory starts
if (fseek(bsRunfile, lfaBase + 4, 0)) // Go to lfoDir field
Fatal(ER_ioerr, strerror(errno));
tmp = lfaDir - lfaBase;
WriteExe(&tmp, sizeof(long)); // Fix it up
if (fseek(bsRunfile, lfaDir, 0)) // Go back to directory
Fatal(ER_ioerr, strerror(errno));
dirSize = OutDntDir(); // Output subsection directory
WriteExe(szSignature, sizeof(szSignature));
// Signature dword
tmp = (lfaDir + dirSize + 2*sizeof(DWORD)) - lfaBase;
WriteExe(&tmp, sizeof(long)); // Distance from EOF to base
if (fseek(bsRunfile, 0L, 2)) // Seek to EOF just in case
Fatal(ER_ioerr, strerror(errno));
#endif
}
#if CVPACK_SHARED
//
// write data to cvpack memory cache area
//
void
WriteSave(FTYPE fCopy, void *pb, UINT cb)
{
if (!rgbl)
{
rgbl = (BL *)GetMem(sizeof(BL) * C_BL_INIT);
iblMac = C_BL_INIT;
iblLim = 0;
}
// if this memory isn't going to stay around, then copy it
if (fCopy)
{
void *pbT = (void *)GetMem(cb);
memcpy(pbT, pb, cb);
pb = pbT;
}
if (iblLim == iblMac)
{
BL *rgblT;
rgblT = (BL *)GetMem(sizeof(BL) * iblMac * 2);
memcpy(rgblT, rgbl, sizeof(BL) * iblMac);
iblMac *= 2;
FFREE(rgbl);
rgbl = rgblT;
}
rgbl[iblLim].lpos = lposCur;
rgbl[iblLim].pb = pb;
iblLim++;
lposCur += cb;
}
// we want to write a few of the blocks because cvpack won't rewrite the
// first bit... [rm]
void WriteFlushSignature()
{
int ibl, cb;
// we know that the signature and offset are written in two pieces...
// if this changes we need to change the magic '2' below [rm]
for (ibl = 0; ibl < 2; ibl++)
{
cb = rgbl[ibl+1].lpos - rgbl[ibl].lpos;
WriteExe(rgbl[ibl].pb, cb);
}
}
void WriteFlushAll()
{
int ibl, cb;
for (ibl = 0; ibl < iblLim - 1; ibl++)
{
cb = rgbl[ibl+1].lpos - rgbl[ibl].lpos;
WriteExe(rgbl[ibl].pb, cb);
}
cb = lposCur - rgbl[ibl].lpos;
WriteExe(rgbl[ibl].pb, cb);
}
// the following are the various callback functions needed to support
// the cvpack library when we are attempting to not write out the
// unpacked types and symbols
#include <io.h>
extern int printf(char *,...);
int __cdecl
link_chsize (int fh, long size)
{
LINK_TRACE(printf("chsize(%06d, %08ld)\n", fh, size));
// we must keep track of the new size so that we will correctly
// process lseeks that are relative to the end of the file
lposMac = size;
return(_chsize(fh,size));
}
int __cdecl
link_close (int x)
{
LINK_TRACE(printf("close (%06d)\n", x));
return(_close(x));
}
void __cdecl
link_exit (int x)
{
LINK_TRACE(printf("exit (%06d)\n", x));
#if USE_REAL
RealMemExit();
#endif
exit(x);
}
long __cdecl
link_lseek (int fh, long lpos, int mode)
{
int ibl;
LINK_TRACE(printf("lseek (%d, %08ld, %2d)\n", fh, lpos, mode));
// if we have no cache blocks, just forward the request...
// this will happen on a /CvpackOnly invocation
if (rgbl == NULL)
return _lseek(fh, lpos, mode);
// adjust lpos so that we are always doing an absolute seek
if (mode == 1)
lpos = lposCur + lpos;
else if (mode == 2)
lpos = lposMac + lpos;
// check for a bogus seek
if (lpos > lposMac || lpos < 0)
{
// this used to be an internal error... but cvpack sometimes does
// try to seek beyond the end of the file when it is trying to
// distinguish a PE exe from an unsegmented DOS exe
// instead of panicing, we just return failure
return(-1);
}
// if we are in the midst of reading a block, then free that block
// cvpack never reads the same data twice
if (iblCur != iblNil)
{
// first check if we're in the header -- we might come back to that...
if (rgbl[iblCur].lpos > cbRealBytes + CB_HEADER_SAVE)
{
long lposCurMin, lposCurMac;
// check for a seek that is within the current bucket
// in case we're skipping within the current block
lposCurMin = rgbl[iblCur].lpos;
if (iblCur < iblLim)
lposCurMac = rgbl[iblCur+1].lpos;
else
lposCurMac = lposMac;
if (lpos < lposCurMin || lpos >= lposCurMac)
{
FFREE(rgbl[iblCur].pb);
rgbl[iblCur].pb = NULL;
}
}
}
// if this seek is not in the debug area of the .exe use the real lseek
if (lpos < cbRealBytes)
{
iblCur = iblNil;
lposCur = lpos;
return(_lseek(fh,lpos,0));
}
// see if we are searching forward (the normal case)
// if we are, search from the current block, otherwise search from
// the start (linear search but OK because cvpack doesn't
// jump around much, it just uses lseek to skip a few bytes here and
// there)
if (lpos > lposCur && iblCur != iblNil)
ibl = iblCur;
else
ibl = 0;
// set the current position
lposCur = lpos;
// loop through the buffered writes looking for the requested position
for (; ibl < iblLim - 1; ibl++)
{
if (lpos >= rgbl[ibl].lpos && lpos < rgbl[ibl+1].lpos)
break; // found bucket
}
// set the bucket number, offset within the bucket, and number of bytes
// left in the bucket
iblCur = ibl;
ichCur = lpos - rgbl[ibl].lpos;
cbCur = CbIbl(ibl) - ichCur;
// check to make sure we haven't seeked back to a buffer that we already
// freed...
ASSERT(rgbl[iblCur].pb != NULL);
// make sure we get the boundary case... if cvpack is requesting to go to
// the end of the data that we have written then we MUST seek because
// cvpack might be about to write out the packed stuff...
if (lposCur == cbRealBytes)
_lseek(fh, lpos, 0);
// we set up the current position earlier... return it now
return(lposCur);
}
int __cdecl
link_open (const char * x, int y)
{
LINK_TRACE(printf("open (%s, %06d)\n", x, y));
// setup the static variables to a safe state
// the current position is the start of file and there is no buffer
// active (iblCur = iblNil)
iblCur = iblNil;
lposCur = 0;
return(_open(x,y));
}
int __cdecl
link_read (int fh, char *pch, unsigned int cb)
{
int cbRem;
LINK_TRACE(printf("read (%d, %06u)\n", fh, cb));
if (rgbl == NULL)
return _read(fh, pch, cb);
// special case zero byte read, not really necessary but
// avoids any potential problems with trying to setup empty
// buffers etc. -- it should just fall out anyways but
// just to be safe [rm]
if (cb == 0)
return 0;
// if there is no buffer active, then just forward the read
// note that if we are invoked with /CvpackOnly this test will
// always succeed
if (iblCur == iblNil)
{
if (lposCur + ((long)(unsigned long)cb) < cbRealBytes)
{
lposCur += cb;
return(_read(fh,pch,cb));
}
else
{
int cbReal = cbRealBytes - lposCur;
if (_read(fh, pch, cbReal) != cbReal)
return -1;
if (link_lseek(fh, cbRealBytes, 0) != cbRealBytes)
return -1;
// set the number of bytes remaining to be read in
cbRem = cb - cbReal;
pch += cb - cbReal;
}
}
else
{
// set the number of bytes remaining to be read in
cbRem = cb;
}
while (cbRem)
{
// check if the number of bytes we need to read is less than
// the number left in the current buffer
if (cbRem <= cbCur)
{
// we can read all the remaining bytes from the current buffer
// so do it. Copy bytes and adjust the number of bytes left
// in this buffer, the index into the buffer, and the current
// position in the file
memcpy(pch, rgbl[iblCur].pb+ichCur, cbRem);
cbCur -= cbRem;
ichCur += cbRem;
lposCur += cbRem;
#ifdef DUMP_CVPACK_BYTES
{
int i;
for (i=0;i<cb;i++)
{
if ((i&15) == 0)
printf("%04x: ", i);
printf("%02x ", pch[i]);
if ((i&15)==15)
printf("\n");
}
}
if ((i&15))
printf("\n");
#endif
return cb;
}
else
{
// in this case, the read is bigger than the current buffer
// we'll be reading the whole buffer and then moving to the
// next buffer
// first read in the rest of this buffer
memcpy(pch, rgbl[iblCur].pb+ichCur, cbCur);
// adjust the number of bytes remaining and the current file
// position...
pch += cbCur;
cbRem -= cbCur;
lposCur += cbCur;
// we won't be coming back to this buffer, so return it to the
// system and mark it as freed
// first check if we're in the header -- we might come back to that
if (rgbl[iblCur].lpos > cbRealBytes + CB_HEADER_SAVE)
{
FFREE(rgbl[iblCur].pb);
rgbl[iblCur].pb = NULL;
}
// move forward to the next bucket, if there are no more buckets
// then this is an ERROR -- we'll be returning the number of
// bytes that we managed to read
iblCur++;
if (iblCur == iblLim)
{
iblCur = iblNil;
break;
}
// check to make sure that we are not reading data that
// we've already freed (yipe!)
ASSERT(rgbl[iblCur].pb != NULL);
// check to make sure that the current position agrees with
// the position that this buffer is supposed to occur at
ASSERT(lposCur == rgbl[iblCur].lpos);
// ok, everything is safe now, set the index into the current
// buffer and the number of bytes left in the buffer, then
// run the loop again until we've read in all the bytes we need
ichCur = 0;
cbCur = CbIbl(iblCur);
}
}
// return the number of bytes we actually read
return cb - cbRem;
}
long __cdecl
link_tell (int x)
{
LINK_TRACE(printf("tell (%06d)\n", x));
if (iblCur != iblNil)
return(lposCur);
return(_tell(x));
}
int __cdecl
link_write (int x, const void * y, unsigned int z)
{
LINK_TRACE(printf("write (%06d,%08lx,%06u)\n", x, y, z));
return(_write(x,y,z));
}
#ifdef CVPACK_DEBUG_HELPER
void dumpstate()
{
printf("lposCur= %d\n", lposCur);
printf("iblCur = %d\n", iblCur);
printf("ichCur = %d\n", ichCur);
printf("cbReal = %d\n", cbRealBytes);
printf("lposMac= %d\n", lposMac);
}
#endif
#else
#ifdef CVPACK_MONDO
#include <io.h>
int __cdecl
link_chsize (int x, long y)
{
return(_chsize(x,y));
}
int __cdecl
link_close (int x)
{
return(_close(x));
}
void __cdecl
link_exit (int x)
{
#if USE_REAL
RealMemExit();
#endif
exit(x);
}
long __cdecl
link_lseek (int x, long y, int z)
{
return(_lseek(x,y,z));
}
int __cdecl
link_open (const char *x, int y)
{
return(_open(x,y));
}
int __cdecl
link_read (int x, void *y, unsigned int z)
{
return(_read(x,y,z));
}
long __cdecl
link_tell (int x)
{
return(_tell(x));
}
int __cdecl
link_write (int x, const void * y, unsigned int z)
{
return(_write(x,y,z));
}
#endif
#endif