137 lines
2.8 KiB
C
137 lines
2.8 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,
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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 (void)
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{
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return (8192);
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}
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/* FIXME: Fake out the fcntl() call, which we don't have. */
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fcntl (int fd, int cmd, int arg)
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{
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switch (cmd)
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{
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case F_GETFL:
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return (O_RDONLY);
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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 (void)
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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 (int signo)
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{
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return (1 << (signo - 1));
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}
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sigsetmask (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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{
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if (sigmask & mask)
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{
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if (!(_SigMask & mask))
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{
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sighold (i + 1);
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_SigMask |= mask;
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}
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}
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else if (_SigMask & mask)
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{
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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 (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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{
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if ((sigmask & mask) && !(_SigMask & mask))
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{
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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 (void)
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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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