static void GoToRealMode( void *rm_func )
{
unsigned i;
PMData->rm_func = RM_OFF( rm_func );
if( IntrState == IS_DPMI ) {
for( i = 0; i < NUM_PM_SAVE_VECTS; ++i ) {
DPMISetPMInterruptVector( PMVectSaveList[i], SavePMVects[i] );
}
for( i = 0; i < NUM_PM_SAVE_EXCEPTS; ++i ) {
DPMISetPMExceptionVector( PMExceptSaveList[i], SavePMExcepts[i] );
}
DoRawSwitchToRM( RMData.segm.rm, offsetof( rm_data, stack ) + STACK_SIZE, RM_OFF( RawSwitchHandler ) );
for( i = 0; i < NUM_PM_SAVE_EXCEPTS; ++i ) {
SavePMExcepts[i] = DPMIGetPMExceptionVector(PMExceptSaveList[i]);
DPMISetPMExceptionVector( PMExceptSaveList[i], OrigPMExcepts[i] );
}
for( i = 0; i < NUM_PM_SAVE_VECTS; ++i ) {
SavePMVects[i] = DPMIGetPMInterruptVector( PMVectSaveList[i] );
DPMISetPMInterruptVector( PMVectSaveList[i], OrigPMVects[i] );
}
} else {
DoIntSwitchToRM();
}
}
void __restore_int_ctrl_break( void )
{
if( __old_int_ctrl_break == 0 ) {
return;
}
if( __int23_exit == __restore_int ) {
__int23_exit = __restore_int23;
} else if( __int23_exit == __restore_int_ctrl_break ) {
__int23_exit = __null_int23_exit;
}
#if defined(__WINDOWS_386__)
TinySetVect( CTRL_BRK_VEC, __old_int_ctrl_break );
#elif defined( __386__ )
if( _IsPharLap() ) {
pharlap_rm_setvect( CTRL_BRK_VEC, __old_int_ctrl_break );
pharlap_pm_setvect( CTRL_BRK_VEC, __old_pm_int_ctrl_break );
} else if( __DPMI_hosted() == 1 ) {
DPMISetRealModeInterruptVector( CTRL_BRK_VEC, __old_int_ctrl_break );
DPMISetPMInterruptVector( CTRL_BRK_VEC, __old_pm_int_ctrl_break );
} else {
_dos_setvect( CTRL_BRK_VEC, __old_int_ctrl_break );
}
#else
_dos_setvect( CTRL_BRK_VEC, __old_int_ctrl_break );
#endif
__old_int_ctrl_break = 0;
}
void __grab_int_ctrl_break( void )
{
if( __old_int_ctrl_break == 0 ) {
#if defined(__WINDOWS_386__)
__old_int_ctrl_break = _dos_getvect( CTRL_BRK_VEC );
TinySetVect( CTRL_BRK_VEC, (void (_WCNEAR *)(void))__int_ctrl_break_handler );
#elif defined( __386__ )
if( _IsPharLap() ) {
__old_int_ctrl_break = pharlap_rm_getvect( CTRL_BRK_VEC );
__old_pm_int_ctrl_break = pharlap_pm_getvect( CTRL_BRK_VEC );
pharlap_setvect( CTRL_BRK_VEC, (pfun) (void (_WCNEAR *)(void))__int_ctrl_break_handler );
} else if( __DPMI_hosted() == 1 ) {
DPMILockLinearRegion((long)__int_ctrl_break_handler,
((long)__restore_int23 - (long)__int_ctrl_break_handler));
__old_int_ctrl_break = DPMIGetRealModeInterruptVector( CTRL_BRK_VEC );
__old_pm_int_ctrl_break = DPMIGetPMInterruptVector( CTRL_BRK_VEC );
DPMISetPMInterruptVector( CTRL_BRK_VEC, __int_ctrl_break_handler );
} else { /* what it used to do */
__old_int_ctrl_break = _dos_getvect( CTRL_BRK_VEC );
_dos_setvect( CTRL_BRK_VEC, __int_ctrl_break_handler );
}
#else
__old_int_ctrl_break = _dos_getvect( CTRL_BRK_VEC );
_dos_setvect( CTRL_BRK_VEC, __int_ctrl_break_handler );
#endif
if( __int23_exit == __null_int23_exit ) {
__int23_exit = __restore_int_ctrl_break;
} else if( __int23_exit == __restore_int23 ) {
__int23_exit = __restore_int;
}
}
}
void __restore_int23( void )
{
if( __old_int23 == 0 ) {
return;
}
if( __int23_exit == __restore_int ) {
__int23_exit = __restore_int_ctrl_break;
} else if( __int23_exit == __restore_int23 ) {
__int23_exit = __null_int23_exit;
}
#if defined(__WINDOWS_386__)
TinySetVect( 0x23, __old_int23 );
#elif defined( __386__ )
if( _IsPharLap() ) {
pharlap_rm_setvect( 0x23, __old_int23 );
pharlap_pm_setvect( 0x23, __old_pm_int23 );
} else if( __DPMI_hosted() == 1 ) {
DPMISetRealModeInterruptVector( 0x23, __old_int23 );
DPMISetPMInterruptVector( 0x23, __old_pm_int23 );
} else { /* this is what it used to do */
_dos_setvect( 0x23, __old_int23 );
}
#else
_dos_setvect( 0x23, __old_int23 );
#endif
__old_int23 = 0;
}
void RestoreOrigVectors(void)
{
unsigned i;
unsigned old;
for( i = 0; i < NUM_PM_SAVE_EXCEPTS; ++i ) {
DPMISetPMExceptionVector( PMExceptSaveList[i], OrigPMExcepts[i] );
}
for( i = 0; i < NUM_PM_SAVE_VECTS; ++i ) {
DPMISetPMInterruptVector( PMVectSaveList[i], OrigPMVects[i] );
}
old = D32NullPtrCheck( 0 );
for( i = 0; i < NUM_VECTS; ++i ) {
MySetRMVector( i, PMData->orig_vects[i].s.segment, PMData->orig_vects[i].s.offset );
}
D32NullPtrCheck( old );
}