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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 <sys/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("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. */
-
- _initialize_ultra3 ()
- {
- #ifdef SYM1
- init_SigMask();
- #endif
- }
-