| njn | 0c24647 | 2005-05-31 01:00:08 +0000 | [diff] [blame^] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- POSIX signals. pub_core_signals.h ---*/ |
| 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
| 7 | This file is part of Valgrind, a dynamic binary instrumentation |
| 8 | framework. |
| 9 | |
| 10 | Copyright (C) 2000-2005 Julian Seward |
| 11 | jseward@acm.org |
| 12 | |
| 13 | This program is free software; you can redistribute it and/or |
| 14 | modify it under the terms of the GNU General Public License as |
| 15 | published by the Free Software Foundation; either version 2 of the |
| 16 | License, or (at your option) any later version. |
| 17 | |
| 18 | This program is distributed in the hope that it will be useful, but |
| 19 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 21 | General Public License for more details. |
| 22 | |
| 23 | You should have received a copy of the GNU General Public License |
| 24 | along with this program; if not, write to the Free Software |
| 25 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 26 | 02111-1307, USA. |
| 27 | |
| 28 | The GNU General Public License is contained in the file COPYING. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __PUB_CORE_SIGNALS_H |
| 32 | #define __PUB_CORE_SIGNALS_H |
| 33 | |
| 34 | //-------------------------------------------------------------------- |
| 35 | // PURPOSE: This module implements all the signal handling stuff. |
| 36 | //-------------------------------------------------------------------- |
| 37 | |
| 38 | /* Highest signal the kernel will let us use */ |
| 39 | extern Int VG_(max_signal); |
| 40 | |
| 41 | extern void VG_(sigstartup_actions) ( void ); |
| 42 | |
| 43 | /* Poll a thread's set of pending signals, and update the Thread's context to deliver one */ |
| 44 | extern void VG_(poll_signals) ( ThreadId ); |
| 45 | |
| 46 | /* Fake system calls for signal handling. */ |
| 47 | extern Int VG_(do_sys_sigaltstack) ( ThreadId tid, vki_stack_t* ss, |
| 48 | vki_stack_t* oss ); |
| 49 | extern Int VG_(do_sys_sigaction) ( Int signo, |
| 50 | const struct vki_sigaction *new_act, |
| 51 | struct vki_sigaction *old_act ); |
| 52 | extern Int VG_(do_sys_sigprocmask) ( ThreadId tid, Int how, |
| 53 | vki_sigset_t* set, |
| 54 | vki_sigset_t* oldset ); |
| 55 | |
| 56 | extern void VG_(clear_out_queued_signals) |
| 57 | ( ThreadId tid, /* OUT */ vki_sigset_t* saved_mask ); |
| 58 | |
| 59 | extern void VG_(kill_self)(Int sigNo); |
| 60 | |
| 61 | /* These function synthesize a fault, as if the running instruction |
| 62 | had had a fault. These functions do not return - they longjmp back |
| 63 | into the scheduler so the signal can be delivered. */ |
| 64 | extern void VG_(synth_fault) (ThreadId tid); |
| 65 | extern void VG_(synth_fault_mapping)(ThreadId tid, Addr addr); |
| 66 | extern void VG_(synth_fault_perms) (ThreadId tid, Addr addr); |
| 67 | extern void VG_(synth_sigill) (ThreadId tid, Addr addr); |
| 68 | |
| 69 | /* Extend the stack to cover addr, if possible */ |
| 70 | extern Bool VG_(extend_stack)(Addr addr, UInt maxsize); |
| 71 | |
| 72 | /* Returns True if the signal is OK for the client to use */ |
| 73 | extern Bool VG_(client_signal_OK)(Int sigNo); |
| 74 | |
| 75 | /* Forces the client's signal handler to SIG_DFL - generally just |
| 76 | before using that signal to kill the process. */ |
| 77 | extern void VG_(set_default_handler)(Int sig); |
| 78 | |
| 79 | #endif // __PUB_CORE_SIGNALS_H |
| 80 | |
| 81 | /*--------------------------------------------------------------------*/ |
| 82 | /*--- end ---*/ |
| 83 | /*--------------------------------------------------------------------*/ |