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/* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
Contributed by David Wood (wood@nyu.edu) at New York University.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define DEBUG
#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "symtab.h"
#include "value.h"
#include <sys/types.h>
#include <sys/param.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include "gdbcore.h"
#include <sys/file.h>
#include "gdb_stat.h"
/* Assorted operating system circumventions */
#ifdef SYM1
/* FIXME: Kludge this for now. It really should be system call. */
int
getpagesize()
{ return(8192); }
/* FIXME: Fake out the fcntl() call, which we don't have. */
fcntl(fd, cmd, arg)
int fd, cmd, arg;
{
switch (cmd) {
case F_GETFL: return(O_RDONLY); break;
default:
printf_unfiltered("Ultra3's fcntl() failing, cmd = %d.\n",cmd);
return(-1);
}
}
/*
* 4.2 Signal support, requires linking with libjobs.
*/
static int _SigMask;
#define sigbit(s) (1L << ((s)-1))
init_SigMask()
{
/* Taken from the sym1 kernel in machdep.c:startup() */
_SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) |
sigbit (SIGCHLD) | sigbit (SIGTINT);
}
sigmask(signo)
int signo;
{
return (1 << (signo-1));
}
sigsetmask(sigmask)
unsigned int sigmask;
{
int i, mask = 1;
int lastmask = _SigMask;
for (i=0 ; i<NSIG ; i++) {
if (sigmask & mask) {
if (!(_SigMask & mask)) {
sighold(i+1);
_SigMask |= mask;
}
} else if (_SigMask & mask) {
sigrelse(i+1);
_SigMask &= ~mask;
}
mask <<= 1;
}
return (lastmask);
}
sigblock(sigmask)
unsigned int sigmask;
{
int i, mask = 1;
int lastmask = _SigMask;
for (i=0 ; i<NSIG ; i++) {
if ((sigmask & mask) && !(_SigMask & mask)) {
sighold(i+1);
_SigMask |= mask;
}
mask <<= 1;
}
return (lastmask);
}
#endif /* SYM1 */
/* Initialization code for this module. */
void
_initialize_ultra3 ()
{
#ifdef SYM1
init_SigMask();
#endif
}
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