| 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | #define DEBUG |
| 22 | #include "defs.h" |
| 23 | #include "frame.h" |
| 24 | #include "inferior.h" |
| 25 | #include "symtab.h" |
| 26 | #include "value.h" |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <sys/param.h> |
| 30 | #include <signal.h> |
| 31 | #include <sys/ioctl.h> |
| 32 | #include <fcntl.h> |
| 33 | |
| 34 | #include "gdbcore.h" |
| 35 | |
| 36 | #include <sys/file.h> |
| 37 | #include <sys/stat.h> |
| 38 | |
| 39 | /* Assorted operating system circumventions */ |
| 40 | |
| 41 | #ifdef SYM1 |
| 42 | |
| 43 | /* FIXME: Kludge this for now. It really should be system call. */ |
| 44 | int |
| 45 | getpagesize() |
| 46 | { return(8192); } |
| 47 | |
| 48 | /* FIXME: Fake out the fcntl() call, which we don't have. */ |
| 49 | fcntl(fd, cmd, arg) |
| 50 | int fd, cmd, arg; |
| 51 | { |
| 52 | |
| 53 | switch (cmd) { |
| 54 | case F_GETFL: return(O_RDONLY); break; |
| 55 | default: |
| 56 | printf("Ultra3's fcntl() failing, cmd = %d.\n",cmd); |
| 57 | return(-1); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | |
| 62 | /* |
| 63 | * 4.2 Signal support, requires linking with libjobs. |
| 64 | */ |
| 65 | static int _SigMask; |
| 66 | #define sigbit(s) (1L << ((s)-1)) |
| 67 | |
| 68 | init_SigMask() |
| 69 | { |
| 70 | /* Taken from the sym1 kernel in machdep.c:startup() */ |
| 71 | _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) | |
| 72 | sigbit (SIGCHLD) | sigbit (SIGTINT); |
| 73 | } |
| 74 | |
| 75 | sigmask(signo) |
| 76 | int signo; |
| 77 | { |
| 78 | return (1 << (signo-1)); |
| 79 | } |
| 80 | |
| 81 | sigsetmask(sigmask) |
| 82 | unsigned int sigmask; |
| 83 | { |
| 84 | int i, mask = 1; |
| 85 | int lastmask = _SigMask; |
| 86 | |
| 87 | for (i=0 ; i<NSIG ; i++) { |
| 88 | if (sigmask & mask) { |
| 89 | if (!(_SigMask & mask)) { |
| 90 | sighold(i+1); |
| 91 | _SigMask |= mask; |
| 92 | } |
| 93 | } else if (_SigMask & mask) { |
| 94 | sigrelse(i+1); |
| 95 | _SigMask &= ~mask; |
| 96 | } |
| 97 | mask <<= 1; |
| 98 | } |
| 99 | return (lastmask); |
| 100 | } |
| 101 | |
| 102 | sigblock(sigmask) |
| 103 | unsigned int sigmask; |
| 104 | { |
| 105 | int i, mask = 1; |
| 106 | int lastmask = _SigMask; |
| 107 | |
| 108 | for (i=0 ; i<NSIG ; i++) { |
| 109 | if ((sigmask & mask) && !(_SigMask & mask)) { |
| 110 | sighold(i+1); |
| 111 | _SigMask |= mask; |
| 112 | } |
| 113 | mask <<= 1; |
| 114 | } |
| 115 | return (lastmask); |
| 116 | } |
| 117 | #endif /* SYM1 */ |
| 118 | |
| 119 | |
| 120 | /* Initialization code for this module. */ |
| 121 | |
| 122 | _initialize_ultra3 () |
| 123 | { |
| 124 | #ifdef SYM1 |
| 125 | init_SigMask(); |
| 126 | #endif |
| 127 | } |