#include <sys/errno.h>
#include <termios.h>
#include <string.h>
+#ifdef NCR486
+#include <sys/stropts.h>
+#endif
/* Non-zero means that we're doing the energize interface. */
int energize = 0;
#define KERNEL_EVENT 1
#define PTY_EVENT 2
+static void execute_command_1();
+
\f
/* This routine redirects the output of fputs_filtered to the kernel so that
the user can see what's going on in his debugger window. */
struct stat statbuf;
struct termios termios;
- if (stat("/dev/ptmx",&statbuf)) error ("getpty: can't locate master\n");
+ mfd = open("/dev/ptmx", O_RDWR); /* get the master */
+ if (mfd < 0)
+ error ("getpty: can't locate master\n");
- /* Number of pseudo-terms is tuneable(16 - 255). System default is 16. */
- for (i = 0; i < MAX_PTM_TRY; i++)
- {
- mfd = open("/dev/ptmx", O_RDWR); /* get the master */
+ if (grantpt(mfd) < 0) /* get a slave */
+ error ("getpty: can't acquire slave");
- if (mfd < 0)
- continue;
+ unlockpt(mfd);
- if (grantpt(mfd) < 0) /* get a slave */
- for (j = 0; j < MAX_GRANTPT_TRY; j++)
- if (grantpt(mfd) == 0 )
- {
- close(mfd);
- continue;
- }
+ slavename = ptsname(mfd); /* get the slave device name */
+ if (!slavename)
+ error ("getpty: can't get a pts\n");
- if (unlockpt(mfd) < 0)
- { /* unlock the slave so he can be opened */
- close(mfd);
- continue;
- }
+ /* Drop controlling tty, become pgrp master */
- slavename = ptsname(mfd); /* get the slave device name */
- if (slavename)
- break; /* Success! */
+ if (setpgid(0, getppid()) == -1)
+ perror("setpgid() failed: ");
- close(mfd);
- continue;
- }
+ if (setsid() == -1)
+ perror("setsid() failed: ");
sfd = open(slavename, O_RDWR);
-
if (sfd < 0)
{
close(mfd);
error ("getpty: can't open slave\n");
}
- if (slavename==NULL && i >= MAX_PTM_TRY)
- error ("getpty: can't get a pts\n");
+
+ if (ioctl(sfd, I_PUSH, "ptem")) perror ("getpty: ioctl I_PUSH fails");
+ if (ioctl(sfd, I_PUSH, "ldterm")) perror ("getpty: ioctl I_PUSH fails");
/* setup mty for non-blocking I/O. */
- if ((n = fcntl(mfd, F_GETFL)) < 0)
+ n = fcntl(mfd, F_GETFL);
+ if (n < 0)
perror ("getpty: fcntl F_GETFL failed");
- else if (fcntl(mfd, F_SETFL, n|O_NDELAY) <0)
- perror("getpty:fcntl F_SETFL fails");
+
+ if (fcntl(mfd, F_SETFL, n|O_NDELAY) <0)
+ perror("getpty: fcntl F_SETFL failed");
/* set up for async i/o - V.4 will send SIGPOLL when data available */
if (ioctl (mfd, I_SETSIG, S_INPUT|S_RDNORM) < 0)
perror ("getpty: ioctl I_SETSIG failed");
- /* fcntl(mfd, F_SETOWN,getpid()); SVR4 does not support this */
-
- if (ioctl(sfd, I_PUSH, "ptem")) perror ("getpty: ioctl I_PUSH fails");
- if (ioctl(sfd, I_PUSH, "ldterm")) perror ("getpty: ioctl I_PUSH fails");
-
- if (tcgetattr(sfd, &termios)) perror("getpty: tcgetattr fails");
+ if (tcgetattr(sfd, &termios))
+ perror("getpty: tcgetattr fails");
termios.c_oflag &= ~OPOST; /* no post-processing */
- if (tcsetattr(sfd, TCSANOW, &termios)) perror("getpty: tcsetattr fails");
+ if (tcsetattr(sfd, TCSANOW, &termios))
+ perror("getpty: tcsetattr fails");
inferior_pty=mfd;
inferior_tty=sfd;
/* Setup for I/O interrupts when appropriate. */
+ signal(SIGIO, SIG_IGN);
+
#ifdef NCR486
if (ioctl (kerfd, I_SETSIG, S_INPUT|S_RDNORM) < 0)
perror ("getpty: ioctl I_SETSIG failed");
/* Tell the rest of the world that Energize is now set up. */
energize = 1;
- /* Drop controlling tty, become pgrp master */
-
- setsid();
-
getpty(); /* Setup the pty */
/* Attach all GDB I/O to the pty */
int *status;
{
int pid;
+ struct sigaction action;
static sigset_t nullsigmask = {0};
if (!energize)
return pid;
}
+int
+energize_shell_wait(status)
+ int *status;
+{
+ int pid;
+ struct sigaction action;
+ static sigset_t nullsigmask = {0};
+
+ if (!energize)
+ return wait(status);
+
+#ifdef NCR486
+ action.sa_handler = iosig;
+ action.sa_mask = nullsigmask;
+ action.sa_flags = SA_RESTART;
+ sigaction(SIGIO, &action, NULL);
+#else
+ signal(SIGIO, iosig);
+#endif
+
+ pid = wait(status);
+
+ signal(SIGIO, SIG_IGN);
+ return pid;
+}
+
static void
null_routine(arg)
int arg;