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Bugfix: LocalInit with start == 0 always places heap at end of segment.

This commit is contained in:
Ulrich Weigand 1999-07-03 15:37:52 +00:00 committed by Alexandre Julliard
parent 3c717e437c
commit 8e3201c5da
1 changed files with 25 additions and 14 deletions
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39
memory/local.c
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@ -349,22 +349,33 @@ BOOL16 WINAPI LocalInit16( HANDLE16 selector, WORD start, WORD end )
}
}
if (start == 0) {
/* Check if the segment is the DGROUP of a module */
if (start == 0)
{
/* start == 0 means: put the local heap at the end of the segment */
if ((pModule = NE_GetPtr( selector )))
DWORD size = GlobalSize16( GlobalHandle16( selector ) );
start = (WORD)(size > 0xffff ? 0xffff : size) - 1;
start -= end;
end += start;
/* Paranoid check */
if ((pModule = NE_GetPtr( GlobalHandle16( selector ) )))
{
SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + pModule->dgroup - 1;
if (pModule->dgroup && (GlobalHandleToSel16(pSeg->hSeg) == selector))
{
/* We can't just use the simple method of using the value
* of minsize + stacksize, since there are programs that
* resize the data segment before calling InitTask(). So,
* we must put it at the end of the segment */
start = GlobalSize16( GlobalHandle16( selector ) );
start -= end;
end += start;
TRACE_(local)(" new start %04x, minstart: %04x\n", start, pSeg->minsize + pModule->stack_size);
SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule );
int segNr;
for ( segNr = 0; segNr < pModule->seg_count; segNr++, pSeg++ )
if ( GlobalHandleToSel16(pSeg->hSeg) == selector )
break;
if ( segNr < pModule->seg_count )
{
WORD minsize = pSeg->minsize;
if ( pModule->ss == segNr+1 )
minsize += pModule->stack_size;
TRACE_(local)(" new start %04x, minstart: %04x\n", start, minsize);
}
}
}