| /* 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, 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 |
| } |