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76f93fb6bc
Change DPMI asynchronous event handling. Always use alternate stack in DPMI relays and check for pending events after original stack has been restored.
248 lines
7.5 KiB
C
248 lines
7.5 KiB
C
/*
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* DOS interrupt 09h handler (IRQ1 - KEYBOARD)
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*
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* Copyright 1999 Ove Kåven
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "miscemu.h"
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#include "wine/debug.h"
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#include "dosexe.h"
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WINE_DEFAULT_DEBUG_CHANNEL(int);
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#define QUEUELEN 31
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static struct
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{
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BYTE queuelen,queue[QUEUELEN],ascii[QUEUELEN];
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} kbdinfo;
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/*
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* Update the BIOS data segment's keyboard status flags (mem 0x40:0x17/0x18)
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* if modifier/special keys have been pressed.
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* FIXME: we merely toggle key status and don't actively set it instead,
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* so we might be out of sync with the real current system status of these keys.
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* Probably doesn't matter too much, though.
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*/
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void DOSVM_Int09UpdateKbdStatusFlags(BYTE scan, BOOL extended, BIOSDATA *data, BOOL *modifier)
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{
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BYTE realscan = scan & 0x7f; /* remove 0x80 make/break flag */
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BYTE bit1 = 255, bit2 = 255;
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INPUT_RECORD msg;
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DWORD res;
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*modifier = TRUE;
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switch (realscan)
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{
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case 0x36: /* r shift */
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bit1 = 0;
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break;
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case 0x2a: /* l shift */
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bit1 = 1;
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break;
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case 0x1d: /* l/r control */
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bit1 = 2;
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if (!extended) /* left control only */
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bit2 = 0;
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break;
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case 0x37: /* SysRq inner parts */
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/* SysRq scan code sequence: 38, e0, 37, e0, b7, b8 */
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FIXME("SysRq not handled yet.\n");
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break;
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case 0x38: /* l/r menu/alt, SysRq outer parts */
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bit1 = 3;
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if (!extended) /* left alt only */
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bit2 = 1;
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break;
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case 0x46: /* scroll lock */
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bit1 = 4;
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if (!extended) /* left ctrl only */
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bit2 = 4;
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break;
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case 0x45: /* num lock, pause */
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if (extended) /* distinguish from non-extended Pause key */
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{ /* num lock */
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bit1 = 5;
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bit2 = 5;
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}
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else
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{ /* pause */
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if (!(scan & 0x80)) /* "make" code */
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bit2 = 3;
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}
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break;
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case 0x3a: /* caps lock */
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bit1 = 6;
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bit2 = 6;
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break;
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case 0x52: /* insert */
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bit1 = 7;
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bit2 = 7;
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*modifier = FALSE; /* insert is no modifier: thus pass to int16 */
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break;
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}
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/* now that we know which bits to set, update them */
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if (!(scan & 0x80)) /* "make" code (keypress) */
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{
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if (bit2 != 255)
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{
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if (bit2 == 3)
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{
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data->KbdFlags2 |= 1 << bit2; /* set "Pause" flag */
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TRACE("PAUSE key, sleeping !\n");
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/* wait for keypress to unlock pause */
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do {
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Sleep(55);
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} while (!(ReadConsoleInputA(GetStdHandle(STD_INPUT_HANDLE),&msg,1,&res) && (msg.EventType == KEY_EVENT)));
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data->KbdFlags2 &= ~(1 << bit2); /* release "Pause" flag */
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}
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else
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data->KbdFlags2 |= 1 << bit2;
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}
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if (bit1 != 255)
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{
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if (bit1 < 4) /* key "pressed" flag */
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data->KbdFlags1 |= 1 << bit1;
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else /* key "active" flag */
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data->KbdFlags1 ^= 1 << bit1;
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}
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}
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else /* "break" / release */
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{
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if (bit2 != 255)
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data->KbdFlags2 &= ~(1 << bit2);
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if (bit1 < 4) /* is it a key "pressed" bit ? */
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data->KbdFlags1 &= ~(1 << bit1);
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}
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TRACE("ext. %d, bits %d/%d, KbdFlags %02x/%02x\n", extended, bit1, bit2, data->KbdFlags1, data->KbdFlags2);
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}
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/**********************************************************************
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* DOSVM_Int09Handler (WINEDOS16.109)
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*
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* Handler for int 09h.
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* See http://www.execpc.com/~geezer/osd/kbd/ for a very good description
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* of keyboard mapping modes.
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*/
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void WINAPI DOSVM_Int09Handler( CONTEXT86 *context )
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{
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BIOSDATA *data = BIOS_DATA;
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BYTE ascii, scan = DOSVM_Int09ReadScan(&ascii);
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BYTE realscan = scan & 0x7f; /* remove 0x80 make/break flag */
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BOOL modifier = FALSE;
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static BOOL extended = FALSE; /* indicates start of extended key sequence */
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BYTE ch[2];
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int cnt, c2;
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TRACE("scan=%02x, ascii=%02x[%c]\n",scan, ascii, ascii ? ascii : ' ');
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if (scan == 0xe0) /* extended keycode */
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extended = TRUE;
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/* check for keys concerning keyboard status flags */
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if ((realscan == 0x52 /* insert */)
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|| (realscan == 0x3a /* caps lock */)
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|| (realscan == 0x45 /* num lock (extended) or pause/break */)
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|| (realscan == 0x46 /* scroll lock */)
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|| (realscan == 0x2a /* l shift */)
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|| (realscan == 0x36 /* r shift */)
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|| (realscan == 0x37 /* SysRq */)
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|| (realscan == 0x38 /* l/r menu/alt, SysRq */)
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|| (realscan == 0x1d /* l/r control */))
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DOSVM_Int09UpdateKbdStatusFlags(scan, extended, data, &modifier);
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if (scan != 0xe0)
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extended = FALSE; /* reset extended flag now */
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/* only interested in "make" (press) codes, not "break" (release),
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* and also not in "modifier key only" (w/o ascii) notifications */
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if (!(scan & 0x80) && !(modifier && !ascii))
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{
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if (ascii) {
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/* we already have an ASCII code, no translation necessary */
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if (data->KbdFlags1 & 8) /* Alt key ? */
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ch[0] = 0; /* ASCII code needs to be 0 if Alt also pressed */
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else
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ch[0] = ascii;
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/* FIXME: need to handle things such as Shift-F1 etc. */
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cnt = 1;
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} else {
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/* translate */
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UINT vkey = MapVirtualKeyA(scan&0x7f, 1);
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BYTE keystate[256];
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GetKeyboardState(keystate);
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cnt = ToAscii(vkey, scan, keystate, (LPWORD)ch, 0);
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}
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if (cnt>0) {
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for (c2=0; c2<cnt; c2++)
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DOSVM_Int16AddChar(ch[c2], scan);
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} else
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if (cnt==0) {
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/* FIXME: need to handle things like shift-F-keys,
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* 0xE0 extended keys, etc */
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DOSVM_Int16AddChar(0, scan);
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}
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}
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DOSVM_AcknowledgeIRQ( context );
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}
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static void KbdRelay( CONTEXT86 *context, void *data )
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{
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if (kbdinfo.queuelen) {
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/* cleanup operation, called from DOSVM_PIC_ioport_out:
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* we'll remove current scancode from keyboard buffer here,
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* rather than in ReadScan, because some DOS apps depend on
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* the scancode being available for reading multiple times... */
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if (--kbdinfo.queuelen) {
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memmove(kbdinfo.queue,kbdinfo.queue+1,kbdinfo.queuelen);
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memmove(kbdinfo.ascii,kbdinfo.ascii+1,kbdinfo.queuelen);
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}
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}
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}
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void WINAPI DOSVM_Int09SendScan( BYTE scan, BYTE ascii )
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{
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if (kbdinfo.queuelen == QUEUELEN) {
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ERR("keyboard queue overflow\n");
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return;
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}
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/* add scancode to queue */
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kbdinfo.queue[kbdinfo.queuelen] = scan;
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kbdinfo.ascii[kbdinfo.queuelen++] = ascii;
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/* tell app to read it by triggering IRQ 1 (int 09) */
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DOSVM_QueueEvent(1,DOS_PRIORITY_KEYBOARD,KbdRelay,NULL);
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}
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/**********************************************************************
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* KbdReadScan (WINEDOS.@)
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*/
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BYTE WINAPI DOSVM_Int09ReadScan( BYTE*ascii )
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{
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if (ascii) *ascii = kbdinfo.ascii[0];
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return kbdinfo.queue[0];
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}
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