static int ClearDebugRegs( int trap )
{
long dr6;
int i;
if( Flags.DRsOn ) {
out( "tr=" ); out( hex( trap ) );
out( " dr6=" ); out( hex( GetDR6() ) );
out( "\r\n" );
if( trap == TRAP_WATCH_POINT ) { /* could be a 386 break point */
dr6 = GetDR6();
if( ( ( dr6 & DR6_B0 ) && IsBreak[0] )
|| ( ( dr6 & DR6_B1 ) && IsBreak[1] )
|| ( ( dr6 & DR6_B2 ) && IsBreak[2] )
|| ( ( dr6 & DR6_B3 ) && IsBreak[3] ) ) {
trap = TRAP_BREAK_POINT;
}
}
for( i = 0; i < 4; ++i ) {
IsBreak[ i ] = FALSE;
}
SetDR6( 0 );
SetDR7( 0 );
}
return( trap );
}
/*
* runProg:
*
* - we turn on the T-bit for single_step mode, and set the debug registers
* for watch points (if we can).
* - we then switch to the debuggee, and wait for a fault to occur.
* - after the fault, we record information about it and return
*
*/
static unsigned runProg( bool single_step )
{
private_msg pmsg;
BOOL watch386;
BOOL dowatch;
BOOL ton;
restart_opts restart_option;
prog_go_ret *ret;
ret = GetOutPtr( 0 );
if( DebugeeTask == NULL ) {
ret->conditions = COND_TERMINATE;
return( sizeof( *ret ) );
}
IntResult.EFlags &= ~TRACE_BIT;
dowatch = FALSE;
watch386 = FALSE;
UnLockInput();
if( single_step ) {
SingleStepMode();
} else if( WPCount != 0 ) {
dowatch = TRUE;
watch386 = SetDebugRegs();
}
ret->conditions = 0;
restart_option = RESTART_APP;
while( DebugeeTask != NULL ) {
if( dowatch && !watch386 ) {
SingleStepMode();
}
ton = TraceOn;
pmsg = DebuggerWaitForMessage( RUNNING_DEBUGEE, TaskAtFault, restart_option );
TraceOn = FALSE;
if( pmsg == FAULT_HIT ) {
switch( IntResult.InterruptNumber ) {
case INT_1:
ret->conditions = COND_TRACE;
if( watch386 ) {
if( GetDR6() & 0xf ) {
ret->conditions = COND_WATCH;
if( DebugDebugeeOnly ) {
if( !CheckWatchPoints() ) {
restart_option = CHAIN;
continue;
}
}
}
break;
}
if( !ton && DebugDebugeeOnly ) {
restart_option = CHAIN;
continue;
}
if( dowatch ) {
if( CheckWatchPoints() ) {
ret->conditions = COND_WATCH;
} else {
restart_option = RESTART_APP;
continue;
}
}
break;
case INT_3:
if( DebugDebugeeOnly ) {
if( !IsOurBreakpoint( IntResult.CS, IntResult.EIP ) ) {
IntResult.EIP++;
restart_option = CHAIN;
continue;
}
}
ret->conditions = COND_BREAK;
break;
default:
if( DebugDebugeeOnly ) {
if( TaskAtFault != DebugeeTask ) {
restart_option = CHAIN;
continue;
}
}
ret->conditions = COND_EXCEPTION;
break;
}
break;
} else if( pmsg == TASK_ENDED ) {
ret->conditions = COND_TERMINATE;
DebugeeTask = NULL;
IntResult.CS = TerminateCSIP >> 16;
IntResult.EIP = (DWORD) (WORD) TerminateCSIP;
break;
} else if( pmsg == GET_CHAR ) {
