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Added INT21_ParseFileNameIntoFCB() and some other things to get 

COMMAND.COM working.
This commit is contained in:
Andreas Mohr 1998-11-22 16:33:35 +00:00 committed by Alexandre Julliard
parent 197cc88450
commit 8f4252d6c6
1 changed files with 66 additions and 2 deletions
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68
msdos/int21.c
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@ -69,6 +69,7 @@ struct DosHeap {
BYTE mediaID;
BYTE biosdate[8];
struct DPB dpb;
BYTE DummyDBCSLeadTable[6];
};
static struct DosHeap *heap;
static WORD DosHeapHandle;
@ -89,6 +90,7 @@ static BOOL32 INT21_CreateHeap(void)
dpbsegptr = PTR_SEG_OFF_TO_SEGPTR(DosHeapHandle,(int)&heap->dpb-(int)heap);
heap->InDosFlag = 0;
strcpy(heap->biosdate, "01/01/80");
memset(heap->DummyDBCSLeadTable, 0, 6);
return TRUE;
}
@ -321,6 +323,44 @@ static BOOL32 ioctlGenericBlkDevReq( CONTEXT *context )
return FALSE;
}
static void INT21_ParseFileNameIntoFCB( CONTEXT *context )
{
char *filename =
CTX_SEG_OFF_TO_LIN(context, DS_reg(context), SI_reg(context) );
char *fcb =
CTX_SEG_OFF_TO_LIN(context, ES_reg(context), DI_reg(context) );
char *buffer, *s, *d;
AL_reg(context) = 0xff; /* failed */
TRACE(int21, "filename: '%s'\n", filename);
buffer = HeapAlloc( GetProcessHeap(), 0, strlen(filename) );
s = filename;
d = buffer;
while (*s)
{
if ((*s != ' ') && (*s != '\r') && (*s != '\n'))
*d++ = *s++;
else
break;
}
*d = '\0';
DOSFS_ToDosFCBFormat(buffer, fcb + 1);
*fcb = 0;
TRACE(int21, "FCB: '%s'\n", ((CHAR *)fcb + 1));
HeapFree( GetProcessHeap(), 0, buffer);
AL_reg(context) =
((strchr(filename, '*')) || (strchr(filename, '$'))) != 0;
/* point DS:SI to first unparsed character */
SI_reg(context) += (int)s - (int)filename;
}
static void INT21_GetSystemDate( CONTEXT *context )
{
SYSTEMTIME systime;
@ -684,6 +724,21 @@ static BOOL32 INT21_GetCurrentDirectory( CONTEXT *context )
}
static void INT21_GetDBCSLeadTable( CONTEXT *context )
{
if (heap || INT21_CreateHeap())
{ /* return an empty table just as DOS 4.0+ does */
DS_reg(context) = DosHeapHandle;
SI_reg(context) = (int)&heap->DummyDBCSLeadTable - (int)heap;
}
else
{
AX_reg(context) = 0x1; /* error */
SET_CFLAG(context);
}
}
static int INT21_GetDiskSerialNumber( CONTEXT *context )
{
BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, DS_reg(context), DX_reg(context));
@ -1042,7 +1097,6 @@ void WINAPI DOS3Call( CONTEXT *context )
case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */
case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */
case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */
case 0x29: /* PARSE FILENAME INTO FCB */
case 0x54: /* GET VERIFY FLAG */
INT_BARF( context, 0x21 );
break;
@ -1170,6 +1224,10 @@ void WINAPI DOS3Call( CONTEXT *context )
DX_reg(context)));
break;
case 0x29: /* PARSE FILENAME INTO FCB */
INT21_ParseFileNameIntoFCB(context);
break;
case 0x2a: /* GET SYSTEM DATE */
INT21_GetSystemDate(context);
break;
@ -1836,7 +1894,13 @@ void WINAPI DOS3Call( CONTEXT *context )
break;
case 0x61: /* UNUSED */
case 0x63: /* UNUSED */
case 0x63: /* misc. language support */
switch (AL_reg(context)) {
case 0x00: /* GET DOUBLE BYTE CHARACTER SET LEAD-BYTE TABLE */
INT21_GetDBCSLeadTable(context);
break;
}
break;
case 0x64: /* OS/2 DOS BOX */
INT_BARF( context, 0x21 );
SET_CFLAG(context);