wine/dlls/winedos/int09.c

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/*
* DOS interrupt 09h handler (IRQ1 - KEYBOARD)
*
* Copyright 1999 Ove K<EFBFBD>ven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/debug.h"
#include "dosexe.h"
WINE_DEFAULT_DEBUG_CHANNEL(int);
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#define QUEUELEN 31
static struct
{
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BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
} kbdinfo;
/*
* Update the BIOS data segment's keyboard status flags (mem 0x40:0x17/0x18)
* if modifier/special keys have been pressed.
* FIXME: we merely toggle key status and don't actively set it instead,
* so we might be out of sync with the real current system status of these keys.
* Probably doesn't matter too much, though.
*/
void DOSVM_Int09UpdateKbdStatusFlags(BYTE scan, BOOL extended, BIOSDATA *data, BOOL *modifier)
{
BYTE realscan = scan & 0x7f; /* remove 0x80 make/break flag */
BYTE bit1 = 255, bit2 = 255;
INPUT_RECORD msg;
DWORD res;
*modifier = TRUE;
switch (realscan)
{
case 0x36: /* r shift */
bit1 = 0;
break;
case 0x2a: /* l shift */
bit1 = 1;
break;
case 0x1d: /* l/r control */
bit1 = 2;
if (!extended) /* left control only */
bit2 = 0;
break;
case 0x37: /* SysRq inner parts */
/* SysRq scan code sequence: 38, e0, 37, e0, b7, b8 */
FIXME("SysRq not handled yet.\n");
break;
case 0x38: /* l/r menu/alt, SysRq outer parts */
bit1 = 3;
if (!extended) /* left alt only */
bit2 = 1;
break;
case 0x46: /* scroll lock */
bit1 = 4;
if (!extended) /* left ctrl only */
bit2 = 4;
break;
case 0x45: /* num lock, pause */
if (extended) /* distinguish from non-extended Pause key */
{ /* num lock */
bit1 = 5;
bit2 = 5;
}
else
{ /* pause */
if (!(scan & 0x80)) /* "make" code */
bit2 = 3;
}
break;
case 0x3a: /* caps lock */
bit1 = 6;
bit2 = 6;
break;
case 0x52: /* insert */
bit1 = 7;
bit2 = 7;
*modifier = FALSE; /* insert is no modifier: thus pass to int16 */
break;
}
/* now that we know which bits to set, update them */
if (!(scan & 0x80)) /* "make" code (keypress) */
{
if (bit2 != 255)
{
if (bit2 == 3)
{
data->KbdFlags2 |= 1 << bit2; /* set "Pause" flag */
TRACE("PAUSE key, sleeping !\n");
/* wait for keypress to unlock pause */
do {
Sleep(55);
} while (!(ReadConsoleInputA(GetStdHandle(STD_INPUT_HANDLE),&msg,1,&res) && (msg.EventType == KEY_EVENT)));
data->KbdFlags2 &= ~(1 << bit2); /* release "Pause" flag */
}
else
data->KbdFlags2 |= 1 << bit2;
}
if (bit1 != 255)
{
if (bit1 < 4) /* key "pressed" flag */
data->KbdFlags1 |= 1 << bit1;
else /* key "active" flag */
data->KbdFlags1 ^= 1 << bit1;
}
}
else /* "break" / release */
{
if (bit2 != 255)
data->KbdFlags2 &= ~(1 << bit2);
if (bit1 < 4) /* is it a key "pressed" bit ? */
data->KbdFlags1 &= ~(1 << bit1);
}
TRACE("ext. %d, bits %d/%d, KbdFlags %02x/%02x\n", extended, bit1, bit2, data->KbdFlags1, data->KbdFlags2);
}
/**********************************************************************
* DOSVM_Int09Handler (WINEDOS16.109)
*
* Handler for int 09h.
* See http://www.execpc.com/~geezer/osd/kbd/ for a very good description
* of keyboard mapping modes.
*/
void WINAPI DOSVM_Int09Handler( CONTEXT86 *context )
{
BIOSDATA *data = DOSVM_BiosData();
BYTE ascii, scan = DOSVM_Int09ReadScan(&ascii);
BYTE realscan = scan & 0x7f; /* remove 0x80 make/break flag */
BOOL modifier = FALSE;
static BOOL extended = FALSE; /* indicates start of extended key sequence */
BYTE ch[2];
int cnt, c2;
TRACE("scan=%02x, ascii=%02x[%c]\n",scan, ascii, ascii ? ascii : ' ');
if (scan == 0xe0) /* extended keycode */
extended = TRUE;
/* check for keys concerning keyboard status flags */
if ((realscan == 0x52 /* insert */)
|| (realscan == 0x3a /* caps lock */)
|| (realscan == 0x45 /* num lock (extended) or pause/break */)
|| (realscan == 0x46 /* scroll lock */)
|| (realscan == 0x2a /* l shift */)
|| (realscan == 0x36 /* r shift */)
|| (realscan == 0x37 /* SysRq */)
|| (realscan == 0x38 /* l/r menu/alt, SysRq */)
|| (realscan == 0x1d /* l/r control */))
DOSVM_Int09UpdateKbdStatusFlags(scan, extended, data, &modifier);
if (scan != 0xe0)
extended = FALSE; /* reset extended flag now */
/* only interested in "make" (press) codes, not "break" (release),
* and also not in "modifier key only" (w/o ascii) notifications */
if (!(scan & 0x80) && !(modifier && !ascii))
{
if (ascii) {
/* we already have an ASCII code, no translation necessary */
if (data->KbdFlags1 & 8) /* Alt key ? */
ch[0] = 0; /* ASCII code needs to be 0 if Alt also pressed */
else
ch[0] = ascii;
/* FIXME: need to handle things such as Shift-F1 etc. */
cnt = 1;
} else {
/* translate */
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UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
BYTE keystate[256];
GetKeyboardState(keystate);
cnt = ToAscii(vkey, scan, keystate, (LPWORD)ch, 0);
}
if (cnt>0) {
for (c2=0; c2<cnt; c2++)
DOSVM_Int16AddChar(ch[c2], scan);
} else
if (cnt==0) {
/* FIXME: need to handle things like shift-F-keys,
* 0xE0 extended keys, etc */
DOSVM_Int16AddChar(0, scan);
}
}
DOSVM_AcknowledgeIRQ( context );
}
static void KbdRelay( CONTEXT86 *context, void *data )
{
if (kbdinfo.queuelen) {
/* cleanup operation, called from DOSVM_PIC_ioport_out:
* we'll remove current scancode from keyboard buffer here,
* rather than in ReadScan, because some DOS apps depend on
* the scancode being available for reading multiple times... */
if (--kbdinfo.queuelen) {
memmove(kbdinfo.queue,kbdinfo.queue+1,kbdinfo.queuelen);
memmove(kbdinfo.ascii,kbdinfo.ascii+1,kbdinfo.queuelen);
}
}
}
void WINAPI DOSVM_Int09SendScan( BYTE scan, BYTE ascii )
{
if (kbdinfo.queuelen == QUEUELEN) {
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ERR("keyboard queue overflow\n");
return;
}
/* add scancode to queue */
kbdinfo.queue[kbdinfo.queuelen] = scan;
kbdinfo.ascii[kbdinfo.queuelen++] = ascii;
/* tell app to read it by triggering IRQ 1 (int 09) */
DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
}
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/**********************************************************************
* KbdReadScan (WINEDOS.@)
*/
BYTE WINAPI DOSVM_Int09ReadScan( BYTE*ascii )
{
if (ascii) *ascii = kbdinfo.ascii[0];
return kbdinfo.queue[0];
}