91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
|
|
* Z80SIM - a Z80-CPU simulator
|
|
*
|
|
* Copyright (C) 1987-2006 by Udo Munk
|
|
*
|
|
* History:
|
|
* 28-SEP-87 Development on TARGON/35 with AT&T Unix System V.3
|
|
* 11-JAN-89 Release 1.1
|
|
* 08-FEB-89 Release 1.2
|
|
* 13-MAR-89 Release 1.3
|
|
* 09-FEB-90 Release 1.4 Ported to TARGON/31 M10/30
|
|
* 20-DEC-90 Release 1.5 Ported to COHERENT 3.0
|
|
* 10-JUN-92 Release 1.6 long casting problem solved with COHERENT 3.2
|
|
* and some optimization
|
|
* 25-JUN-92 Release 1.7 comments in english
|
|
* 04-OCT-06 Release 1.8 modified to compile on modern POSIX OS's
|
|
*/
|
|
|
|
/*
|
|
* This module contain the interrupt handlers for the OS:
|
|
*
|
|
* int_on() : initialize interrupt handlers
|
|
* int_off() : reset interrupts to default
|
|
* user_int() : handler for user interrupt (CNTL-C)
|
|
* quit_int() : handler for signal "quit" (CNTL-\)
|
|
* term_int() : handler for signal SIGTERM when process is killed
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <termios.h>
|
|
#include <signal.h>
|
|
#include "sim.h"
|
|
#include "simglb.h"
|
|
|
|
static void user_int(int), quit_int(int), term_int(int);
|
|
extern void exit_io(void), int_off();
|
|
extern struct termios old_term;
|
|
|
|
void int_on(void)
|
|
{
|
|
static struct sigaction newact;
|
|
|
|
newact.sa_handler = user_int;
|
|
sigaction(SIGINT, &newact, NULL);
|
|
newact.sa_handler = quit_int;
|
|
sigaction(SIGQUIT, &newact, NULL);
|
|
newact.sa_handler = term_int;
|
|
sigaction(SIGTERM, &newact, NULL);
|
|
}
|
|
|
|
void int_off(void)
|
|
{
|
|
static struct sigaction newact;
|
|
|
|
newact.sa_handler = SIG_DFL;
|
|
sigaction(SIGINT, &newact, NULL);
|
|
sigaction(SIGQUIT, &newact, NULL);
|
|
sigaction(SIGTERM, &newact, NULL);
|
|
}
|
|
|
|
static void user_int(int sig)
|
|
{
|
|
#ifdef CNTL_C
|
|
cpu_error = USERINT;
|
|
cpu_state = STOPPED;
|
|
#else
|
|
cntl_c++;
|
|
#endif
|
|
}
|
|
|
|
static void quit_int(int sig)
|
|
{
|
|
#ifdef CNTL_BS
|
|
cpu_error = USERINT;
|
|
cpu_state = STOPPED;
|
|
#else
|
|
cntl_bs++;
|
|
#endif
|
|
}
|
|
|
|
static void term_int(int sig)
|
|
{
|
|
exit_io();
|
|
int_off();
|
|
tcsetattr(0, TCSADRAIN, &old_term);
|
|
puts("\nKilled by user");
|
|
exit(0);
|
|
}
|