| 1 | /* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS. |
| 2 | Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc. |
| 3 | Contributed by David Wood (wood@nyu.edu) at New York University. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #define DEBUG |
| 23 | #include "defs.h" |
| 24 | #include "frame.h" |
| 25 | #include "inferior.h" |
| 26 | #include "symtab.h" |
| 27 | #include "value.h" |
| 28 | |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/param.h> |
| 31 | #include <signal.h> |
| 32 | #include <sys/ioctl.h> |
| 33 | #include <fcntl.h> |
| 34 | |
| 35 | #include "gdbcore.h" |
| 36 | |
| 37 | #include <sys/file.h> |
| 38 | #include "gdb_stat.h" |
| 39 | |
| 40 | /* Assorted operating system circumventions */ |
| 41 | |
| 42 | #ifdef SYM1 |
| 43 | |
| 44 | /* FIXME: Kludge this for now. It really should be system call. */ |
| 45 | int |
| 46 | getpagesize (void) |
| 47 | { |
| 48 | return (8192); |
| 49 | } |
| 50 | |
| 51 | /* FIXME: Fake out the fcntl() call, which we don't have. */ |
| 52 | fcntl (int fd, int cmd, int arg) |
| 53 | { |
| 54 | |
| 55 | switch (cmd) |
| 56 | { |
| 57 | case F_GETFL: |
| 58 | return (O_RDONLY); |
| 59 | break; |
| 60 | default: |
| 61 | printf_unfiltered ("Ultra3's fcntl() failing, cmd = %d.\n", cmd); |
| 62 | return (-1); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | |
| 67 | /* |
| 68 | * 4.2 Signal support, requires linking with libjobs. |
| 69 | */ |
| 70 | static int _SigMask; |
| 71 | #define sigbit(s) (1L << ((s)-1)) |
| 72 | |
| 73 | init_SigMask (void) |
| 74 | { |
| 75 | /* Taken from the sym1 kernel in machdep.c:startup() */ |
| 76 | _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) | |
| 77 | sigbit (SIGCHLD) | sigbit (SIGTINT); |
| 78 | } |
| 79 | |
| 80 | sigmask (int signo) |
| 81 | { |
| 82 | return (1 << (signo - 1)); |
| 83 | } |
| 84 | |
| 85 | sigsetmask (unsigned int sigmask) |
| 86 | { |
| 87 | int i, mask = 1; |
| 88 | int lastmask = _SigMask; |
| 89 | |
| 90 | for (i = 0; i < NSIG; i++) |
| 91 | { |
| 92 | if (sigmask & mask) |
| 93 | { |
| 94 | if (!(_SigMask & mask)) |
| 95 | { |
| 96 | sighold (i + 1); |
| 97 | _SigMask |= mask; |
| 98 | } |
| 99 | } |
| 100 | else if (_SigMask & mask) |
| 101 | { |
| 102 | sigrelse (i + 1); |
| 103 | _SigMask &= ~mask; |
| 104 | } |
| 105 | mask <<= 1; |
| 106 | } |
| 107 | return (lastmask); |
| 108 | } |
| 109 | |
| 110 | sigblock (unsigned int sigmask) |
| 111 | { |
| 112 | int i, mask = 1; |
| 113 | int lastmask = _SigMask; |
| 114 | |
| 115 | for (i = 0; i < NSIG; i++) |
| 116 | { |
| 117 | if ((sigmask & mask) && !(_SigMask & mask)) |
| 118 | { |
| 119 | sighold (i + 1); |
| 120 | _SigMask |= mask; |
| 121 | } |
| 122 | mask <<= 1; |
| 123 | } |
| 124 | return (lastmask); |
| 125 | } |
| 126 | #endif /* SYM1 */ |
| 127 | |
| 128 | |
| 129 | /* Initialization code for this module. */ |
| 130 | |
| 131 | void |
| 132 | _initialize_ultra3 (void) |
| 133 | { |
| 134 | #ifdef SYM1 |
| 135 | init_SigMask (); |
| 136 | #endif |
| 137 | } |