diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/dos/event.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/dos/event.c | 494 |
1 files changed, 0 insertions, 494 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/dos/event.c b/board/MAI/bios_emulator/scitech/src/pm/dos/event.c deleted file mode 100644 index a969d111b4..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/dos/event.c +++ /dev/null @@ -1,494 +0,0 @@ -/**************************************************************************** -* -* SciTech OS Portability Manager Library -* -* ======================================================================== -* -* The contents of this file are subject to the SciTech MGL Public -* License Version 1.0 (the "License"); you may not use this file -* except in compliance with the License. You may obtain a copy of -* the License at http://www.scitechsoft.com/mgl-license.txt -* -* Software distributed under the License is distributed on an -* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -* implied. See the License for the specific language governing -* rights and limitations under the License. -* -* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -* -* The Initial Developer of the Original Code is SciTech Software, Inc. -* All Rights Reserved. -* -* ======================================================================== -* -* Language: ANSI C -* Environment: 32-bit DOS -* -* Description: 32-bit DOS implementation for the SciTech cross platform -* event library. -* -****************************************************************************/ - -/*--------------------------- Global variables ----------------------------*/ - -ibool _VARAPI _EVT_useEvents = true; /* True to use event handling */ -ibool _VARAPI _EVT_installed = 0; /* Event handers installed? */ -uchar _VARAPI *_EVT_biosPtr = NULL; /* Pointer to the BIOS data area */ -static ibool haveMouse = false; /* True if we have a mouse */ - -/*---------------------------- Implementation -----------------------------*/ - -/* External assembler functions */ - -void EVTAPI _EVT_pollJoystick(void); -uint EVTAPI _EVT_disableInt(void); -uint EVTAPI _EVT_restoreInt(uint flags); -void EVTAPI _EVT_codeStart(void); -void EVTAPI _EVT_codeEnd(void); -void EVTAPI _EVT_cCodeStart(void); -void EVTAPI _EVT_cCodeEnd(void); -int EVTAPI _EVT_getKeyCode(void); -void EVTAPI _EVT_pumpMessages(void); -int EVTAPI EVT_rdinx(int port,int index); -void EVTAPI EVT_wrinx(int port,int index,int value); - -#ifdef NO_KEYBOARD_INTERRUPT -/**************************************************************************** -REMARKS: -This function is used to pump all keyboard messages from the BIOS keyboard -handler into our event queue. This can be used to avoid using the -installable keyboard handler if this is causing problems. -****************************************************************************/ -static void EVTAPI _EVT_pumpMessages(void) -{ - RMREGS regs; - uint key,ps; - - /* Since the keyboard ISR has not been installed if NO_IDE_BUG has - * been defined, we first check for any pending keyboard events - * here, and if there are some insert them into the event queue to - * be picked up later - what a kludge. - */ - while ((key = _EVT_getKeyCode()) != 0) { - ps = _EVT_disableInt(); - addKeyEvent(EVT_KEYDOWN, key); - _EVT_restoreInt(ps); - } - - regs.x.ax = 0x0B; /* Reset Move Mouse */ - PM_int86(0x33,®s,®s); -} -#endif - -/**************************************************************************** -REMARKS: -This function is used to return the number of ticks since system -startup in milliseconds. This should be the same value that is placed into -the time stamp fields of events, and is used to implement auto mouse down -events. -****************************************************************************/ -ulong _EVT_getTicks(void) -{ - return (ulong)PM_getLong(_EVT_biosPtr+0x6C) * 55UL; -} - -/**************************************************************************** -REMARKS: -Reboots the machine from DOS (warm boot) -****************************************************************************/ -static void Reboot(void) -{ - PMREGS regs; - PMSREGS sregs; - - ushort *rebootType = PM_mapRealPointer(0x40,0x72); - *rebootType = 0x1234; - PM_callRealMode(0xFFFF,0x0000,®s,&sregs); -} - -/**************************************************************************** -REMARKS: -Include generic raw scancode keyboard module. -****************************************************************************/ -#define SUPPORT_CTRL_ALT_DEL -#include "common/keyboard.c" - -/**************************************************************************** -REMARKS: -This function fools the DOS mouse driver into thinking that it is running -in graphics mode, rather than text mode so we always get virtual coordinates -correctly rather than character coordinates. -****************************************************************************/ -int _EVT_foolMouse(void) -{ - int oldmode = PM_getByte(_EVT_biosPtr+0x49); - PM_setByte(_EVT_biosPtr+0x49,0x10); - oldmode |= (EVT_rdinx(0x3C4,0x2) << 8); - return oldmode; -} - -/**************************************************************************** -REMARKS: -This function unfools the DOS mouse driver after we have finished calling it. -****************************************************************************/ -void _EVT_unfoolMouse( - int oldmode) -{ - PM_setByte(_EVT_biosPtr+0x49,oldmode); - - /* Some mouse drivers reset the plane mask register for VGA plane 4 - * modes, which screws up the display on some VGA compatible controllers - * in SuperVGA modes. We reset the value back again in here to solve - * the problem. - */ - EVT_wrinx(0x3C4,0x2,oldmode >> 8); -} - -/**************************************************************************** -REMARKS: -Determines if we have a mouse attached and functioning. -****************************************************************************/ -static ibool detectMouse(void) -{ - RMREGS regs; - RMSREGS sregs; - uchar *p; - ibool retval; - - regs.x.ax = 0x3533; /* Get interrupt vector 0x33 */ - PM_int86x(0x21,®s,®s,&sregs); - - /* Check that interrupt vector 0x33 is not a zero, and that the first - * instruction in the interrupt vector is not an IRET instruction - */ - p = PM_mapRealPointer(sregs.es, regs.x.bx); - retval = ((sregs.es != 0) || (regs.x.bx != 0)) && (PM_getByte(p) != 207); - return retval; -} - -/**************************************************************************** -PARAMETERS: -what - Event code -message - Event message -x,y - Mouse position at time of event -but_stat - Mouse button status at time of event - -REMARKS: -Adds a new mouse event to the event queue. This routine is called from within -the mouse interrupt subroutine, so it must be efficient. - -NOTE: Interrupts MUST be OFF while this routine is called to ensure we have - mutually exclusive access to our internal data structures for - interrupt driven systems (like under DOS). -****************************************************************************/ -static void addMouseEvent( - uint what, - uint message, - int x, - int y, - int mickeyX, - int mickeyY, - uint but_stat) -{ - event_t evt; - - if (EVT.count < EVENTQSIZE) { - /* Save information in event record. */ - evt.when = _EVT_getTicks(); - evt.what = what; - evt.message = message; - evt.modifiers = but_stat; - evt.where_x = x; /* Save mouse event position */ - evt.where_y = y; - evt.relative_x = mickeyX; - evt.relative_y = mickeyY; - evt.modifiers |= EVT.keyModifiers; - addEvent(&evt); /* Add to tail of event queue */ - } -} - -/**************************************************************************** -PARAMETERS: -mask - Event mask -butstate - Button state -x - Mouse x coordinate -y - Mouse y coordinate - -REMARKS: -Mouse event handling routine. This gets called when a mouse event occurs, -and we call the addMouseEvent() routine to add the appropriate mouse event -to the event queue. - -Note: Interrupts are ON when this routine is called by the mouse driver code. -****************************************************************************/ -static void EVTAPI mouseISR( - uint mask, - uint butstate, - int x, - int y, - int mickeyX, - int mickeyY) -{ - uint ps; - uint buttonMask; - - if (mask & 1) { - /* Save the current mouse coordinates */ - EVT.mx = x; EVT.my = y; - - /* If the last event was a movement event, then modify the last - * event rather than post a new one, so that the queue will not - * become saturated. Before we modify the data structures, we - * MUST ensure that interrupts are off. - */ - ps = _EVT_disableInt(); - if (EVT.oldMove != -1) { - EVT.evtq[EVT.oldMove].where_x = x; /* Modify existing one */ - EVT.evtq[EVT.oldMove].where_y = y; - EVT.evtq[EVT.oldMove].relative_x += mickeyX; - EVT.evtq[EVT.oldMove].relative_y += mickeyY; - } - else { - EVT.oldMove = EVT.freeHead; /* Save id of this move event */ - addMouseEvent(EVT_MOUSEMOVE,0,x,y,mickeyX,mickeyY,butstate); - } - _EVT_restoreInt(ps); - } - if (mask & 0x2A) { - ps = _EVT_disableInt(); - buttonMask = 0; - if (mask & 2) buttonMask |= EVT_LEFTBMASK; - if (mask & 8) buttonMask |= EVT_RIGHTBMASK; - if (mask & 32) buttonMask |= EVT_MIDDLEBMASK; - addMouseEvent(EVT_MOUSEDOWN,buttonMask,x,y,0,0,butstate); - EVT.oldMove = -1; - _EVT_restoreInt(ps); - } - if (mask & 0x54) { - ps = _EVT_disableInt(); - buttonMask = 0; - if (mask & 2) buttonMask |= EVT_LEFTBMASK; - if (mask & 8) buttonMask |= EVT_RIGHTBMASK; - if (mask & 32) buttonMask |= EVT_MIDDLEBMASK; - addMouseEvent(EVT_MOUSEUP,buttonMask,x,y,0,0,butstate); - EVT.oldMove = -1; - _EVT_restoreInt(ps); - } - EVT.oldKey = -1; -} - -/**************************************************************************** -REMARKS: -Keyboard interrupt handler function. - -NOTE: Interrupts are OFF when this routine is called by the keyboard ISR, - and we leave them OFF the entire time. -****************************************************************************/ -static void EVTAPI keyboardISR(void) -{ - processRawScanCode(PM_inpb(0x60)); - PM_outpb(0x20,0x20); -} - -/**************************************************************************** -REMARKS: -Safely abort the event module upon catching a fatal error. -****************************************************************************/ -void _EVT_abort() -{ - EVT_exit(); - PM_fatalError("Unhandled exception!"); -} - -/**************************************************************************** -PARAMETERS: -mouseMove - Callback function to call wheneve the mouse needs to be moved - -REMARKS: -Initiliase the event handling module. Here we install our mouse handling ISR -to be called whenever any button's are pressed or released. We also build -the free list of events in the event queue. - -We use handler number 2 of the mouse libraries interrupt handlers for our -event handling routines. -****************************************************************************/ -void EVTAPI EVT_init( - _EVT_mouseMoveHandler mouseMove) -{ - int i; - - PM_init(); - EVT.mouseMove = mouseMove; - _EVT_biosPtr = PM_getBIOSPointer(); - EVT_resume(); - - /* Grab all characters pending in the keyboard buffer and stuff - * them into our event buffer. This allows us to pick up any keypresses - * while the program is initialising. - */ - while ((i = _EVT_getKeyCode()) != 0) - addKeyEvent(EVT_KEYDOWN,i); -} - -/**************************************************************************** -REMARKS: -Initiailises the internal event handling modules. The EVT_suspend function -can be called to suspend event handling (such as when shelling out to DOS), -and this function can be used to resume it again later. -****************************************************************************/ -void EVTAPI EVT_resume(void) -{ - static int locked = 0; - int stat; - uchar mods; - PM_lockHandle lh; /* Unused in DOS */ - - if (_EVT_useEvents) { - /* Initialise the event queue and enable our interrupt handlers */ - initEventQueue(); -#ifndef NO_KEYBOARD_INTERRUPT - PM_setKeyHandler(keyboardISR); -#endif -#ifndef NO_MOUSE_INTERRUPT - if ((haveMouse = detectMouse()) != 0) { - int oldmode = _EVT_foolMouse(); - PM_setMouseHandler(0xFFFF,mouseISR); - _EVT_unfoolMouse(oldmode); - } -#endif - - /* Read the keyboard modifier flags from the BIOS to get the - * correct initialisation state. The only state we care about is - * the correct toggle state flags such as SCROLLLOCK, NUMLOCK and - * CAPSLOCK. - */ - EVT.keyModifiers = 0; - mods = PM_getByte(_EVT_biosPtr+0x17); - if (mods & 0x10) - EVT.keyModifiers |= EVT_SCROLLLOCK; - if (mods & 0x20) - EVT.keyModifiers |= EVT_NUMLOCK; - if (mods & 0x40) - EVT.keyModifiers |= EVT_CAPSLOCK; - - /* Lock all of the code and data used by our protected mode interrupt - * handling routines, so that it will continue to work correctly - * under real mode. - */ - if (!locked) { - /* It is difficult to ensure that we lock our global data, so we - * do this by taking the address of a variable locking all data - * 2Kb on either side. This should properly cover the global data - * used by the module (the other alternative is to declare the - * variables in assembler, in which case we know it will be - * correct). - */ - stat = !PM_lockDataPages(&EVT,sizeof(EVT),&lh); - stat |= !PM_lockDataPages(&_EVT_biosPtr,sizeof(_EVT_biosPtr),&lh); - stat |= !PM_lockCodePages((__codePtr)_EVT_cCodeStart,(int)_EVT_cCodeEnd-(int)_EVT_cCodeStart,&lh); - stat |= !PM_lockCodePages((__codePtr)_EVT_codeStart,(int)_EVT_codeEnd-(int)_EVT_codeStart,&lh); - if (stat) { - PM_fatalError("Page locking services failed - interrupt handling not safe!"); - exit(1); - } - locked = 1; - } - - /* Catch program termination signals so we can clean up properly */ - signal(SIGABRT, _EVT_abort); - signal(SIGFPE, _EVT_abort); - signal(SIGINT, _EVT_abort); - _EVT_installed = true; - } -} - -/**************************************************************************** -REMARKS -Changes the range of coordinates returned by the mouse functions to the -specified range of values. This is used when changing between graphics -modes set the range of mouse coordinates for the new display mode. -****************************************************************************/ -void EVTAPI EVT_setMouseRange( - int xRes, - int yRes) -{ - RMREGS regs; - - if (haveMouse) { - int oldmode = _EVT_foolMouse(); - PM_resetMouseDriver(1); - regs.x.ax = 7; /* Mouse function 7 - Set horizontal min and max */ - regs.x.cx = 0; - regs.x.dx = xRes; - PM_int86(0x33,®s,®s); - regs.x.ax = 8; /* Mouse function 8 - Set vertical min and max */ - regs.x.cx = 0; - regs.x.dx = yRes; - PM_int86(0x33,®s,®s); - _EVT_unfoolMouse(oldmode); - } -} - -/**************************************************************************** -REMARKS -Modifes the mouse coordinates as necessary if scaling to OS coordinates, -and sets the OS mouse cursor position. -****************************************************************************/ -void _EVT_setMousePos( - int *x, - int *y) -{ - RMREGS regs; - - if (haveMouse) { - int oldmode = _EVT_foolMouse(); - regs.x.ax = 4; /* Mouse function 4 - Set mouse position */ - regs.x.cx = *x; /* New horizontal coordinate */ - regs.x.dx = *y; /* New vertical coordinate */ - PM_int86(0x33,®s,®s); - _EVT_unfoolMouse(oldmode); - } -} - -/**************************************************************************** -REMARKS -Suspends all of our event handling operations. This is also used to -de-install the event handling code. -****************************************************************************/ -void EVTAPI EVT_suspend(void) -{ - uchar mods; - - if (_EVT_installed) { - /* Restore the interrupt handlers */ - PM_restoreKeyHandler(); - if (haveMouse) - PM_restoreMouseHandler(); - signal(SIGABRT, SIG_DFL); - signal(SIGFPE, SIG_DFL); - signal(SIGINT, SIG_DFL); - - /* Set the keyboard modifier flags in the BIOS to our values */ - EVT_allowLEDS(true); - mods = PM_getByte(_EVT_biosPtr+0x17) & ~0x70; - if (EVT.keyModifiers & EVT_SCROLLLOCK) - mods |= 0x10; - if (EVT.keyModifiers & EVT_NUMLOCK) - mods |= 0x20; - if (EVT.keyModifiers & EVT_CAPSLOCK) - mods |= 0x40; - PM_setByte(_EVT_biosPtr+0x17,mods); - - /* Flag that we are no longer installed */ - _EVT_installed = false; - } -} - -/**************************************************************************** -REMARKS -Exits the event module for program terminatation. -****************************************************************************/ -void EVTAPI EVT_exit(void) -{ - EVT_suspend(); -} |
