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129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
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Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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Contributed by David Wood (wood@nyu.edu) at New York University.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define DEBUG
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "symtab.h"
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#include "value.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include "gdbcore.h"
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#include <sys/file.h>
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#include "gdb_stat.h"
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/* Assorted operating system circumventions */
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#ifdef SYM1
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/* FIXME: Kludge this for now. It really should be system call. */
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int
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getpagesize()
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{ return(8192); }
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/* FIXME: Fake out the fcntl() call, which we don't have. */
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fcntl(fd, cmd, arg)
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int fd, cmd, arg;
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{
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switch (cmd) {
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case F_GETFL: return(O_RDONLY); break;
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default:
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printf_unfiltered("Ultra3's fcntl() failing, cmd = %d.\n",cmd);
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return(-1);
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}
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}
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/*
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* 4.2 Signal support, requires linking with libjobs.
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*/
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static int _SigMask;
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#define sigbit(s) (1L << ((s)-1))
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init_SigMask()
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{
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/* Taken from the sym1 kernel in machdep.c:startup() */
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_SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) |
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sigbit (SIGCHLD) | sigbit (SIGTINT);
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}
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sigmask(signo)
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int signo;
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{
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return (1 << (signo-1));
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}
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sigsetmask(sigmask)
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unsigned int sigmask;
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{
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int i, mask = 1;
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int lastmask = _SigMask;
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for (i=0 ; i<NSIG ; i++) {
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if (sigmask & mask) {
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if (!(_SigMask & mask)) {
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sighold(i+1);
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_SigMask |= mask;
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}
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} else if (_SigMask & mask) {
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sigrelse(i+1);
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_SigMask &= ~mask;
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}
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mask <<= 1;
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}
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return (lastmask);
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}
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sigblock(sigmask)
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unsigned int sigmask;
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{
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int i, mask = 1;
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int lastmask = _SigMask;
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for (i=0 ; i<NSIG ; i++) {
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if ((sigmask & mask) && !(_SigMask & mask)) {
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sighold(i+1);
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_SigMask |= mask;
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}
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mask <<= 1;
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}
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return (lastmask);
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}
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#endif /* SYM1 */
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/* Initialization code for this module. */
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void
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_initialize_ultra3 ()
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{
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#ifdef SYM1
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init_SigMask();
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#endif
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}
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