| 1 | /* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS. |
| 2 | Copyright 1988, 1989, 1991, 1992, 1993, 1995, 2000 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by David Wood (wood@nyu.edu) at New York University. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #define DEBUG |
| 24 | #include "defs.h" |
| 25 | #include "frame.h" |
| 26 | #include "inferior.h" |
| 27 | #include "symtab.h" |
| 28 | #include "value.h" |
| 29 | |
| 30 | #include <sys/types.h> |
| 31 | #include <sys/param.h> |
| 32 | #include <signal.h> |
| 33 | #include <sys/ioctl.h> |
| 34 | #include <fcntl.h> |
| 35 | |
| 36 | #include "gdbcore.h" |
| 37 | |
| 38 | #include <sys/file.h> |
| 39 | #include "gdb_stat.h" |
| 40 | |
| 41 | /* Assorted operating system circumventions */ |
| 42 | |
| 43 | #ifdef SYM1 |
| 44 | |
| 45 | /* FIXME: Kludge this for now. It really should be system call. */ |
| 46 | int |
| 47 | getpagesize (void) |
| 48 | { |
| 49 | return (8192); |
| 50 | } |
| 51 | |
| 52 | /* FIXME: Fake out the fcntl() call, which we don't have. */ |
| 53 | fcntl (int fd, int cmd, int arg) |
| 54 | { |
| 55 | |
| 56 | switch (cmd) |
| 57 | { |
| 58 | case F_GETFL: |
| 59 | return (O_RDONLY); |
| 60 | break; |
| 61 | default: |
| 62 | printf_unfiltered ("Ultra3's fcntl() failing, cmd = %d.\n", cmd); |
| 63 | return (-1); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | |
| 68 | /* |
| 69 | * 4.2 Signal support, requires linking with libjobs. |
| 70 | */ |
| 71 | static int _SigMask; |
| 72 | #define sigbit(s) (1L << ((s)-1)) |
| 73 | |
| 74 | init_SigMask (void) |
| 75 | { |
| 76 | /* Taken from the sym1 kernel in machdep.c:startup() */ |
| 77 | _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) | |
| 78 | sigbit (SIGCHLD) | sigbit (SIGTINT); |
| 79 | } |
| 80 | |
| 81 | sigmask (int signo) |
| 82 | { |
| 83 | return (1 << (signo - 1)); |
| 84 | } |
| 85 | |
| 86 | sigsetmask (unsigned int sigmask) |
| 87 | { |
| 88 | int i, mask = 1; |
| 89 | int lastmask = _SigMask; |
| 90 | |
| 91 | for (i = 0; i < NSIG; i++) |
| 92 | { |
| 93 | if (sigmask & mask) |
| 94 | { |
| 95 | if (!(_SigMask & mask)) |
| 96 | { |
| 97 | sighold (i + 1); |
| 98 | _SigMask |= mask; |
| 99 | } |
| 100 | } |
| 101 | else if (_SigMask & mask) |
| 102 | { |
| 103 | sigrelse (i + 1); |
| 104 | _SigMask &= ~mask; |
| 105 | } |
| 106 | mask <<= 1; |
| 107 | } |
| 108 | return (lastmask); |
| 109 | } |
| 110 | |
| 111 | sigblock (unsigned int sigmask) |
| 112 | { |
| 113 | int i, mask = 1; |
| 114 | int lastmask = _SigMask; |
| 115 | |
| 116 | for (i = 0; i < NSIG; i++) |
| 117 | { |
| 118 | if ((sigmask & mask) && !(_SigMask & mask)) |
| 119 | { |
| 120 | sighold (i + 1); |
| 121 | _SigMask |= mask; |
| 122 | } |
| 123 | mask <<= 1; |
| 124 | } |
| 125 | return (lastmask); |
| 126 | } |
| 127 | #endif /* SYM1 */ |
| 128 | |
| 129 | |
| 130 | /* Initialization code for this module. */ |
| 131 | |
| 132 | void |
| 133 | _initialize_ultra3 (void) |
| 134 | { |
| 135 | #ifdef SYM1 |
| 136 | init_SigMask (); |
| 137 | #endif |
| 138 | } |