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

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/* asmsym.c -- microsoft 80x86 assembler
**
** microsoft (r) macro assembler
** copyright (c) microsoft corp 1986. all rights reserved
**
** randy nevin
**
** 10/90 - Quick conversion to 32 bit by Jeff Spencer
*/
#include <stdio.h>
#include <string.h>
#include "asm86.h"
#include "asmfcn.h"
#include "asmctype.h"
#include "asmtab.h"
#include "dos.h"
#include <ctype.h>
#define TSYMSIZE 451
#define FS_ALLOC 2000 /* far symbol allocation size */
#define CB_CODELABEL 2
#define CB_PROCLABEL 12
#define CB_DATALABEL 5
SYMBOL FARSYM * FARSYM tsym[TSYMSIZE];
static char FARSYM *symaddr;
static SHORT symfree;
static DSCREC descT;
extern USHORT LedataOp;
extern OFFSET ecuroffset;
extern SYMBOL FARSYM *pStrucFirst;
VOID PASCAL CODESIZE putWord(USHORT);
SHORT PASCAL CODESIZE cbNumericLeaf(long);
VOID PASCAL CODESIZE putNumericLeaf(long);
SHORT PASCAL dmpSymbols PARMS((SYMBOL FARSYM *));
SHORT PASCAL dumpTypes PARMS((SYMBOL FARSYM *));
VOID PASCAL CODESIZE putSymbol PARMS((SYMBOL FARSYM *));
VOID PASCAL CODESIZE putFixup PARMS((void));
/*** iskey - look for string in keyword table
*
* iskey (str, table);
*
* Entry str = string to search for
* table = keyword table to search
* Exit
* Returns value defined in keyword table if string found
* NOTFOUND if string not found
* Calls
*/
#ifndef M8086OPT /* native coded */
USHORT CODESIZE
iskey (
KEYWORDS FARSYM *table
){
register KEYSYM FARSYM *p;
register char *uc;
register char *lc;
register SHORT nhash;
char mapstr[SYMMAX + 1];
if (caseflag == CASEL) {
nhash = 0;
for (uc = mapstr, lc = naim.pszName; *lc; ) {
nhash += *uc++ = MAP (*lc++);
}
*uc = 0;
uc = mapstr;
}
else {
nhash = naim.usHash;
uc = naim.pszName;
}
for (p = (table->kt_table)[nhash % table->kt_size]; p; p = p->k_next)
if ((nhash == p->k_hash) && (!STRFFCMP( p->k_name,uc)))
return (p->k_token);
return (NOTFOUND);
}
#endif /* not M8086OPT */
/*** symsrch - search for symbol
*
* flag = symsrch ();
*
* Entry naim = symbol to search for
*
* Exit *symptr = symbol if found
* *symptr = NULL if symbol not found
* Returns TRUE if symbol found
* FALSE if symbol not found
*/
#ifndef M8086OPT
char CODESIZE
symsrch ()
{
register SYMBOL FARSYM *p;
if (naim.ucCount && (p = tsym[naim.usHash % TSYMSIZE])){
do {
if (( naim.usHash == p->nampnt->hashval)
&& !STRNFCMP (naim.pszName, p->nampnt->id)) {
if( iProcCur ){ /* Check for nested names */
if( p->symkind == CLABEL ){
if( p->symu.clabel.iProc && p->symu.clabel.iProc != iProcCur ){
continue;
}
}else if( p->symkind == EQU ){
if( p->symu.equ.iProc && p->symu.equ.iProc != iProcCur ){
continue;
}
}
}
symptr = p;
if( crefing == CREF_SINGLE ){
crefnew (REF);
crefout ();
}
return (TRUE);
}
} while (p = p->next);
}
return (FALSE);
}
#endif /* M8086OPT */
/*** symsearch - search for symbol
*
* flag = symsearch (sym);
*
* Entry *sym = symbol to search for
* Exit *symptr = symbol if found
* *symptr = NULL if symbol not found
* Returns TRUE if symbol found
* FALSE if symbol not found
*/
char PASCAL CODESIZE
symsearch ()
{
char rg[4], *naimSav;
register SHORT i;
register char ret;
FASTNAME save;
ret = FALSE;
if (*naim.pszName)
if (!(ret = symsrch ()))
if (caseflag == CASEL && (i = naim.ucCount) <= 3) {
// Save the name
memcpy( &save, &naim, sizeof( FASTNAME ) );
// Rebuild it in upper case
naim.pszName = rg;
*naim.pszName = '\0';
naim.usHash = 0;
for( ; i >= 0; i--){
naim.usHash += naim.pszName[i] = MAP (save.pszName[i]);
}
// Search for the upper cased name
ret = symsrch ();
// Restore the name
memcpy( &naim, &save, sizeof( FASTNAME ) );
}
return (ret);
}
/*** syFet - symbol Fetch with text macro subsitution
*
* flag = syFet();
*
* Entry naim.pszName - atom to fetch
* Exit *symptr = symbol if found
* *symptr = NULL if symbol not found
* Returns TRUE if symbol found
* FALSE if symbol not found
*/
char PASCAL CODESIZE
symFet ()
{
register char ret;
char *lbufSav;
ret = symsrch();
if (ret &&
symptr->symkind == EQU &&
symptr->symu.equ.equtyp == TEXTMACRO){
/* look up the name indirect */
lbufSav = lbufp;
lbufp = symptr->symu.equ.equrec.txtmacro.equtext;
getatom();
lbufp = lbufSav;
ret = symsrch();
}
return(ret);
}
char PASCAL CODESIZE
symFetNoXref()
{
SHORT ret;
xcreflag--;
ret = symFet();
xcreflag++;
return((char)ret);
}
/*** createname - create idtext structure for name
*
* ptr = createname (sym);
*
* Entry *sym = name to create entry for
* Exit none
* Returns address of idtext structure
* Calls malloc, strcpy
*/
NAME FAR * PASCAL CODESIZE
createname (
register char *sym
){
register NAME FAR *ptr;
register UINT i;
register UINT len;
len = strlen (sym );
i = len + sizeof( NAME ) - sizeof( ptr->id );
ptr = (NAME FAR *)falloc ((USHORT)i, "createname");
ptr->hashval = 0;
fMemcpy (ptr->id, sym, len + 1 );
return (ptr);
}
#ifdef M8086
/*** creatlname - create idtext structure for name
*
* ptr = creatlname (sym);
*
* Entry *sym = name to create entry for
* Exit none
* Returns address of idtext structure
* Calls malloc, strcpy
*/
NAME * PASCAL CODESIZE
creatlname (
register char *sym
){
NAME *ptr;
register UINT i;
i = naim.ucCount + sizeof( NAME ) - sizeof( ptr->id );
ptr = (NAME *)nalloc ( (USHORT)i, "creatlname");
memcpy (ptr->id, sym, naim.ucCount + 1 );
return (ptr);
}
#endif
/*** symcreate - create new symbol node
*
* symcreate (symbol, sattr, skind);
*
* Entry symbol = symbol name
* sattr = symbol attribute
* skind = symbol kind
* Exit symptr = pointer to symbol
* symbolcnt incremented
* Returns none
* Calls createname
*/
/* Map of Symbol types to additional allocation needed past common header */
UCHAR mpcbSY [] = {
sizeof (struct symbseg), /* SEGMENT */
sizeof (struct symbgrp), /* GROUP */
sizeof (struct symbclabel), /* CLABEL */
sizeof (struct symbproc), /* PROC */
sizeof (struct symbrsm), /* REC */
sizeof (struct symbrsm), /* STRUC */
sizeof (struct symbequ), /* EQU */
sizeof (struct symbext), /* DVAR */
sizeof (struct symbext), /* CLASS*/
sizeof (struct symbrecf), /* RECFIELD */
sizeof (struct symbstrucf), /* STRUCFIELD */
sizeof (struct symbrsm), /* MACRO */
sizeof (struct symbreg) /* REGISTER */
};
VOID PASCAL CODESIZE
symcreate (
UCHAR sattr,
char skind
){
register USHORT cb;
register SYMBOL FARSYM *p;
register USHORT cbName, pT;
register USHORT cbStruct;
/* Create new symbol entry */
cbName = naim.ucCount + sizeof (char) + sizeof (USHORT);
cbStruct = (SHORT)(&(((SYMBOL FARSYM *)0)->symu)) + mpcbSY[skind];
// Make sure NAME struct starts on double word boundry (required for MIPS)
cbStruct = (cbStruct + 3) & ~3;
cb = cbStruct + cbName;
// Do suballocations on double word boundries, so promote length to a
// multiple of 4.
cb = (cb + 3) & ~3;
if (!symaddr || (cb > symfree)) {
#ifdef FS
symaddr = falloc (FS_ALLOC, "symcreate-EXPR");
#else
symaddr = nalloc (FS_ALLOC, "symcreate-EXPR");
#endif
symfree = FS_ALLOC;
#if !defined FLATMODEL
/* Uses knowledge of fMemcpy to initialize memory by */
/* Repeatedly copying zero to the next word in the buf */
*((SHORT FARSYM *)symaddr) = NULL;
fMemcpy(((char FAR *)symaddr)+2, symaddr, FS_ALLOC-2);
#else
/* Since in small model memset is available use it */
memset( symaddr, 0, FS_ALLOC );
#endif
}
p = (SYMBOL FARSYM *)symaddr;
symaddr += cb;
symfree -= cb;
symbolcnt++;
/* clear out default values and fill in givens */
p->attr = sattr;
p->symkind = skind;
if (skind == EQU)
p->symu.equ.equtyp = equsel;
/* Now create record for name of symbol and link in */
p->nampnt = (NAME FAR *)((char FAR *)p + cbStruct); // Name follows fixed structures and padding
fMemcpy (p->nampnt->id, naim.pszName, (USHORT)(naim.ucCount + 1));
p->nampnt->hashval = naim.usHash;
cb = naim.usHash % TSYMSIZE;
p->next = tsym[cb];
tsym[cb] = symptr = p;
}
/*** muldef - set multidefined bit and output error
*
* muldef ();
*
* Entry *symptr = symbol which is multiply defined
* Exit MULTDEFINED set in symptr->attr
* Returns none
* Calls error
*
* Two bits keep track of multiple definitions:
* MULTDEFINED: is remembered between pass one & two
* BACKREF: set by defining function, unset by uses that are
* forward references. Reset at end of pass 1.
*
* When a symbol is defined, it should:
* - check that BACKREF is off, if not call muldef which
* sets MULTIDEFINED, causes an error in pass 1 & 2
* This causes error on 2nd and on defines
*
* - if not BACKREF then check for MULTDEFINED,
* error message in pass 2 only.
* This in effect prints an error for the first definer only
*
* - set BACKREF to indicate symbol defined
*/
VOID PASCAL CODESIZE
muldef ()
{
symptr->attr |= (M_MULTDEFINED);
errorc (E_RSY);
}
/*** labelcreate - create label
*
* labelcreate (labelsize, labelkind);
*
* Entry labelsize = size of label
* labelkind = kind of label
* Exit
* Returns
* Calls
* Note This routine makes symbol table entry and checks for
* * Multiple definitions
* * Phase error (value different between passes)
*/
VOID PASCAL CODESIZE
labelcreate (
USHORT labelsize,
char labelkind
){
char newsym;
register SYMBOL FARSYM *p, FARSYM *pCS;
newsym = TRUE;
checkRes();
xcreflag--;
if (! ((labelkind == EQU)? symsrch (): symFet())){
symcreate (M_DEFINED, labelkind);
}
else if (M_DEFINED & symptr->attr)
newsym = FALSE;
xcreflag++;
p = symptr;
equdef = !newsym;
if (newsym) {
p->offset = pcoffset;
p->symsegptr = pcsegment;
}
if ((p->attr&~M_CDECL) == M_GLOBAL) /* forward referenced global */
if (1 << labelkind & (M_PROC | M_DVAR | M_CLABEL | M_EQU)){
p->symkind = labelkind;
if (labelkind == EQU)
p->symu.equ.equtyp = equsel;
}
else
errorn (E_SDK);
p->attr |= M_DEFINED;
p->symtype = labelsize;
p->length = 1;
/* Check to see if there would be any error in label */
if ((p->symkind != labelkind) || (M_XTERN & p->attr))
errorn (E_SDK);
else if ((M_BACKREF & p->attr) && (p->symkind != EQU))
muldef ();
else if (M_MULTDEFINED & p->attr)
errorn (E_SMD);
else if (M_DEFINED & p->attr)
if (!(1 << labelkind & (M_EQU | M_STRUCFIELD)) &&
(p->offset != pcoffset)) {
errorc (E_PHE);
if (errorcode == E_PHE)
pcoffset = p->offset;
}
else {
p->attr |= M_DEFINED | M_BACKREF;
if ((labelkind != EQU) && emittext)
pcdisplay ();
}
if ((labelkind == p->symkind) &&
!((1 << labelkind) & (M_EQU | M_STRUCFIELD))) {
if (isCodeLabel(p)) {
pCS = regsegment[CSSEG];
#ifndef FEATURE
/* ASSUME CS:FLAT gets assume of current segment */
if (pCS == pFlatGroup)
pCS = pcsegment;
#endif
}
else
pCS = regsegment[DSSEG];
/* CS context for label */
if (!newsym && pCS != p->symu.clabel.csassume)
errorc(E_SPC);
p->symu.clabel.csassume = pCS;
if (labelsize == CSNEAR)
/* This is code label */
if (!pCS)
/* No CS assume, can't define */
errorc (E_NCS);
else
if ((pcsegment != pCS) &&
((pCS->symkind != GROUP) ||
(pcsegment->symu.segmnt.grouptr != pCS)))
/* Not same segment or CS not seg's grp */
errorc (E_NCS);
}
crefdef ();
}
/*** switchname - switch atom and length between svname and name
*
* switchname ();
*
* Entry none
* Exit svname and name switched
* naim.usHash and svname.usHash switched
* svlcname and lcname switched
* Returns none
* Calls none
*/
#ifndef M8086OPT
VOID CODESIZE
switchname ()
{
FASTNAME tmpName;
register char *pNameTmp;
/* Swap naim and svname (str ptrs, hash values and lengths) */
memcpy( &tmpName, &naim, sizeof( FASTNAME ) );
memcpy( &naim, &svname, sizeof( FASTNAME ) );
memcpy( &svname, &tmpName, sizeof( FASTNAME ) );
}
#endif
#if !defined FLATMODEL
# pragma alloc_text (FA_TEXT, scansymbols)
#endif
/*** scansymbols - scan symbol in alpha order and execute function
*
* scansymbols (item);
*
* Entry item = pointer to function to execute
* Exit
* Returns
* Calls
*/
VOID PASCAL
scansymbols (
SHORT (PASCAL *item) (SYMBOL FARSYM *)
){
register USHORT i;
for (i = 0; i < TSYMSIZE; i++)
scanorder (tsym[i], item);
}
#if !defined FLATMODEL
# pragma alloc_text (FA_TEXT, sortalpha)
#endif
/*** sortalpha - sort symbol into alpha ordered list
*
* sortalpha (p);
*
* Entry *p = symbol entry
* Exit symbol sorted into proper alpha list
* Returns none
* Calls none
*/
SHORT PASCAL
sortalpha (
register SYMBOL FARSYM *p
){
register SYMBOL FARSYM *tseg;
register SYMBOL FARSYM * FARSYM *lseg;
char i;
char c;
if (p->symkind == MACRO) {
tseg = macroroot;
lseg = &macroroot;
}
else if ((p->symkind == STRUC) || (p->symkind == REC)) {
tseg = strucroot;
lseg = &strucroot;
}
else {
c = MAP (*(p->nampnt->id));
i = (isalpha (c))? c - 'A': 'Z' - 'A' + 1;
tseg = symroot[i];
lseg = &symroot[i];
}
/* Add symbol to list */
for (; tseg; lseg = &(tseg->alpha), tseg = tseg->alpha) {
if (STRFFCMP (p->nampnt->id, tseg->nampnt->id) < 0)
break;
}
*lseg = p;
p->alpha = tseg;
return 0;
}
/*** typeFet - Fetch the type of the symbol
*
* Entry symtype - the size of the symbol
* Exit prefined symbol type
*/
UCHAR mpSizeType[] = {
0,
makeType(BT_UNSIGNED, BT_DIRECT, BT_sz1), /* db */
makeType(BT_UNSIGNED, BT_DIRECT, BT_sz2), /* dw */
0,
makeType(BT_UNSIGNED, BT_DIRECT, BT_sz4), /* dd */
0,
makeType(BT_UNSIGNED, BT_FARP, BT_sz4), /* df */
0,
makeType(BT_UNSIGNED, BT_DIRECT, BT_sz2), /* dq */
0,
makeType(BT_UNSIGNED, BT_DIRECT, BT_sz4) /* dt */
};
UCHAR mpRealType[] = {
0, 0, 0, 0,
makeType(BT_REAL, BT_DIRECT, BT_sz1), /* dd */
0, 0, 0,
makeType(BT_REAL, BT_DIRECT, BT_sz2), /* dq */
0,
makeType(BT_REAL, BT_DIRECT, BT_sz4) /* dt */
};
SHORT PASCAL CODESIZE
typeFet (
USHORT symtype
){
if (symtype <= 10)
return(mpSizeType[symtype]);
else if (symtype == CSNEAR)
return(512);
else if (symtype == CSFAR)
return(513);
else
return(0);
}
char symDefine[] = "$$SYMBOLS segment 'DEBSYM'";
char typeDefine[] = "$$TYPES segment 'DEBTYP'";
char fProcs;
/*** dumpCodeview - dump out codeview symbolic info to the obj file
*
* Entry end of pass one and two
* Exit pass one just computes the segment sizes
* and pass two writes the symbols
*/
static SYMBOL FAR *plastSeg; // indicates segIndex of last ChangeSegment
VOID PASCAL
dumpCodeview ()
{
char svlistflag;
char svloption;
if (codeview != CVSYMBOLS || !emittext)
return;
plastSeg = NULL;
svlistflag = listflag;
svloption = loption;
listflag = FALSE;
loption = FALSE;
fProcs = FALSE;
wordszdefault = 2; /* this will vary when CV can do 32 bit segments */
doLine(symDefine);
pcsegment->attr |= M_NOCREF; pcsegment->symu.segmnt.classptr->attr |= M_NOCREF;
scansymbols(dmpSymbols);
fProcs++;
scanSorted(pProcFirst, dmpSymbols);
endCurSeg();
doLine(typeDefine);
pcsegment->attr |= M_NOCREF; pcsegment->symu.segmnt.classptr->attr |= M_NOCREF;
/* First output two types, one for near & far code labels
* Format
* [1][cb][0x72][0x80][0x74|0x73 (near/far)] */
if (pass2) {
putWord(3 << 8 | 1);
putWord(0x72 << 8);
putWord(0x74 << 8 | 0x80);
putWord(3 << 8 | 1);
putWord(0x72 << 8);
putWord(0x73 << 8 | 0x80);
}
else
pcoffset = 12;
scanSorted(pStrucFirst, dumpTypes);
endCurSeg();
listflag = svlistflag;
loption = svloption;
}
/*** dmpSymbols - create the codeview symbol segment
*
* Entry
* Exit
*/
static fInProc;
SHORT PASCAL
dmpSymbols(
SYMBOL FARSYM *pSY
){
SHORT cbName, cbRecord;
char fProcParms;
UCHAR f386; // will be 0 or 0x80 for OR'ing into rectype
fProcParms = 0xB;
if (pSY->symkind == PROC) {
if ( pSY->symu.plabel.pArgs){
if (!fProcs)
return 0;
fProcParms = 1;
}
else if (pSY->attr & (M_GLOBAL | M_XTERN))
return 0;
}
else if (pSY->symkind == CLABEL) {
if (!fInProc && (pSY->symu.clabel.iProc ||
pSY->attr & (M_GLOBAL | M_XTERN)))
return 0;
}
else
return 0;
f386 = (pSY->symsegptr->symu.segmnt.use32 == 4? 0x80 : 0);
cbName = STRFLEN(pSY->nampnt->id) + 1 + (pSY->attr & M_CDECL);
cbRecord = cbName + (f386? 4: 2) +
((isCodeLabel(pSY))?
((fProcParms == 1)? CB_PROCLABEL: CB_CODELABEL):
CB_DATALABEL);
if (isCodeLabel(pSY)
&& (plastSeg != pSY->symsegptr)) {
plastSeg = pSY->symsegptr;
putWord(0x11 << 8 | 5);
descT.dsckind.opnd.doffset = 0;
descT.dsckind.opnd.dtype = FORTYPE;
descT.dsckind.opnd.dsegment = pSY->symsegptr;
descT.dsckind.opnd.dsize = 2;
descT.dsckind.opnd.fixtype = FBASESEG;
descT.dsckind.opnd.dcontext = pSY->symsegptr;
putFixup();
putWord(0); // 2 bytes reserved
}
descT.dsckind.opnd.doffset = pSY->offset;
descT.dsckind.opnd.dtype = FORTYPE;
descT.dsckind.opnd.dsegment = pSY->symsegptr;
descT.dsckind.opnd.dsize = f386? 4: 2;
emitopcode((UCHAR)cbRecord);
if (isCodeLabel(pSY)) {
/* do the actual outputting for code labels
* FORMAT:
*
* [cb][0xB][offset][0/4][name]
*
* For Proc labels with parms
*
* [cb][0x1][offset][typeIndex][cbProc][startRelOff][endRelOff]
* [0][0/4][name]
*/
emitopcode((UCHAR)(fProcParms | f386)); /* contains 0xb or 1 */
/* reserve two bytes and then a fixup to get
* the code labe offset */
descT.dsckind.opnd.fixtype = f386? F32OFFSET: FOFFSET;
descT.dsckind.opnd.dcontext = pSY->symu.clabel.csassume;
putFixup();
if (fProcParms == 1) {
/* type index */
putWord(0);
putWord(pSY->symu.plabel.proclen);
/* starting & ending offset of proc */
putWord(0);
putWord(pSY->symu.plabel.proclen);
putWord(0); /* reservered to 0 */
}
emitopcode((UCHAR)((pSY->symtype == CSNEAR)? 0: 4));
}
else {
/* do the actual outputting for data labels
* FORMAT:
* [cb][0x5][offset:seg][typeIndex][name] */
emitopcode((UCHAR)(0x5|f386));
/* reserve four bytes and then a fixup to get
* the data far address */
descT.dsckind.opnd.fixtype = f386? F32POINTER: FPOINTER;
descT.dsckind.opnd.dsize += 2;
descT.dsckind.opnd.dcontext = NULL;
putFixup();
putWord(pSY->symu.clabel.type);
}
putSymbol(pSY);
if (fProcParms == 1) {
/* Go through the chain of text macro parmeters and output
* the BP relative local symbols.
*
* Format:
* [cb][4][offset][typeIndex][name]
* ...
* [1][2] - end block
*/
for (pSY = pSY->symu.plabel.pArgs; pSY; pSY = pSY->alpha){
if (pSY->symkind == CLABEL) {
/* a locally nest label in a procedure */
fInProc++;
dmpSymbols(pSY);
fInProc--;
}
else {
cbName = STRFLEN(pSY->nampnt->id) + 1;
emitopcode((UCHAR)((f386? 7:5) + cbName)); /* cbRecord */
emitopcode((UCHAR)(4 | f386)); /* recType */
if (f386) {
putWord((USHORT) pSY->offset);
putWord(*((USHORT FAR *)&(pSY->offset)+1));
} else
putWord((USHORT) pSY->offset);
putWord(pSY->symu.equ.equrec.txtmacro.type);
putSymbol(pSY);
}
}
putWord(2 << 8 | 1); /* end block record */
}
return 0;
}
/*** dumpTypes - creats a type definition in the codeview type segment
*
* Entry Symbol table pointer to structure or record
* Exit
*/
SHORT PASCAL
dumpTypes(
SYMBOL FARSYM *pSY
){
SHORT cType, cbType, cbNlist, cbName;
SYMBOL FARSYM *pSYField;
/* Scan through the struct field to compute tlist size */
pSYField = pSY->symu.rsmsym.rsmtype.rsmstruc.struclist;
cbNlist = 1;
cType = 0;
if (pSY->symkind == STRUC) {
while (pSYField) {
cbNlist += STRFLEN(pSYField->nampnt->id) + 2 +
cbNumericLeaf(pSYField->offset);
pSYField = pSYField->symu.struk.strucnxt;
cType++;
}
cbName = (SHORT) STRFLEN(pSY->nampnt->id);
cbType = 10 +
cbNumericLeaf(((long) pSY->symtype) * 8) +
cbNumericLeaf((long) cType) +
cbName;
}
else
cbType = -3;
/* A type has the following format
*
* [1][cbType][0x79][cbTypeInBits][cFields][tListIndex][nListIndex]
* [0x82][structureName][0x68]
*
* tList
* nList
*/
if (pass2) {
emitopcode(1);
if (pSY->symkind == STRUC) {
putWord(cbType);
emitopcode(0x79);
putNumericLeaf(((long) pSY->symtype) * 8);
putNumericLeaf((long) pSY->symu.rsmsym.rsmtype.rsmstruc.strucfldnum);
emitopcode(0x83); /* tList Index */
putWord((USHORT)(pSY->symu.rsmsym.rsmtype.rsmstruc.type+1));
emitopcode(0x83); /* nList Index */
putWord((USHORT)(pSY->symu.rsmsym.rsmtype.rsmstruc.type+2));
emitopcode(0x82);
putSymbol(pSY);
emitopcode(0x68); /* packed structure */
/* next comes the tList (type index array), it has the following format
*
* [1][cb][0x7f] ([0x83][basicTypeIndex])..repeated..
*/
emitopcode(1);
putWord((USHORT)(cType * (USHORT)3 + (USHORT)1));
emitopcode(0x7f);
pSYField = pSY->symu.rsmsym.rsmtype.rsmstruc.struclist;
while(pSYField){
emitopcode(0x83);
putWord(pSYField->symu.struk.type);
pSYField = pSYField->symu.struk.strucnxt;
}
/* next comes the nList (field names), it has the following format
*
* [1][cb][0x7f] ([0x82][cbName][fieldName][offset])..repeated..
*/
emitopcode(1);
putWord(cbNlist);
emitopcode(0x7f);
pSYField = pSY->symu.rsmsym.rsmtype.rsmstruc.struclist;
while(pSYField){
emitopcode(0x82);
putSymbol(pSYField);
putNumericLeaf(pSYField->offset);
pSYField = pSYField->symu.struk.strucnxt;
}
}
else {
/* a pointer to type has the following format
*
* [1][5][0x7f] [near/far][0x83][typeIndex]
*/
putWord(5);
emitopcode(0x7A);
emitopcode((UCHAR)((pSY->attr)? 0x73: 0x74));
emitopcode(0x83);
putWord(pSY->symtype);
}
}
else
pcoffset += cbType +
cType * 3 +
cbNlist + 10;
return 0;
}
/*** cbNumericLeaf - compute the size for a numeric leaf
*
* Entry long value to output
* Exit size of leaf
*/
SHORT PASCAL CODESIZE
cbNumericLeaf(
long aLong
){
if (aLong & 0xFFFF0000)
return(5);
else if (aLong & 0xFF80)
return(3);
else
return(1);
}
/*** putNumericLeaf - output variable size numeric codeview leaf
*
* Entry long value to output
* Exit numeric leaf on OMF
*/
VOID PASCAL CODESIZE
putNumericLeaf(
long aLong
){
if (aLong & 0xFFFF0000){
emitopcode(0x86);
putWord((USHORT)aLong);
putWord(*((USHORT *)&aLong+1));
}
else if (aLong & 0xFF80){
emitopcode(0x85);
putWord((USHORT)aLong);
}
else
emitopcode((UCHAR)aLong);
}
/*** doLine - feed a text line to parse for processing
*
* Entry pointer to text string
* Exit processed line
*/
VOID PASCAL CODESIZE
doLine(
char *pText
){
USHORT cvSave;
fCrefline = FALSE;
#ifdef BCBOPT
if (fNotStored)
storelinepb ();
#endif
if (fNeedList) {
listline(); /* list out current line */
strcpy(linebuffer, pText);
fSkipList++;
}
lbufp = strcpy(lbuf, pText);
linebp = lbufp + strlen(lbufp);
cvSave = codeview;
codeview = 0;
if (loption || expandflag == LIST)
fSkipList = FALSE;
parse();
codeview = cvSave;
fSkipList++;
fCrefline++;
}
/*** putWord - output a 2 byte word to the current segment
*
* Entry word to output
* Exit increment pcoffset
*/
VOID PASCAL CODESIZE
putWord(
USHORT aWord
){
if (pass2)
emitcword((OFFSET) aWord);
pcoffset += 2;
}
/*** putSymbol - put out the name of a symbol
*
* Entry word to output
* Exit increment pcoffset
*/
VOID PASCAL CODESIZE
putSymbol(
SYMBOL FARSYM *pSY
){
SHORT cbName;
cbName = STRFLEN(pSY->nampnt->id) + 1 + (pSY->attr & M_CDECL);
if (pass2){
if (emitcleanq ((UCHAR)cbName))
emitdumpdata ((UCHAR)LedataOp);
emitSymbol(pSY);
}
pcoffset += cbName;
ecuroffset = pcoffset;
}
/*** putFixup - put out a fixup
*
* Entry golbal descT
* Exit increment pcoffset
*/
VOID PASCAL CODESIZE
putFixup()
{
extern UCHAR fNoMap;
fNoMap++;
if (pass2)
emitobject(&descT.dsckind.opnd);
fNoMap--;
pcoffset += descT.dsckind.opnd.dsize;
}
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