2 /*--------------------------------------------------------------------*/
3 /*--- POSIX signals. pub_core_signals.h ---*/
4 /*--------------------------------------------------------------------*/
7 This file is part of Valgrind, a dynamic binary instrumentation
10 Copyright (C) 2000-2010 Julian Seward
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.
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.
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
28 The GNU General Public License is contained in the file COPYING.
31 #ifndef __PUB_CORE_SIGNALS_H
32 #define __PUB_CORE_SIGNALS_H
34 //--------------------------------------------------------------------
35 // PURPOSE: This module implements all the signal handling stuff.
36 //--------------------------------------------------------------------
38 #include "pub_tool_signals.h" // I want to get rid of this header...
40 /* Highest signal the kernel will let us use */
41 extern Int VG_(max_signal);
43 /* Use high signals because native pthreads wants to use low */
44 #define VG_SIGVGKILL (VG_(max_signal)-0)
45 #define VG_SIGVGRTUSERMAX (VG_(max_signal)-1)
47 extern void VG_(sigstartup_actions) ( void );
49 /* Poll a thread's set of pending signals, and update the Thread's
50 context to deliver one (viz, create signal frames if needed) */
51 extern void VG_(poll_signals) ( ThreadId );
53 /* Fake system calls for signal handling. */
54 extern SysRes VG_(do_sys_sigaltstack) ( ThreadId tid, vki_stack_t* ss,
56 extern SysRes VG_(do_sys_sigaction) ( Int signo,
57 const vki_sigaction_toK_t* new_act,
58 vki_sigaction_fromK_t* old_act );
59 extern SysRes VG_(do_sys_sigprocmask) ( ThreadId tid, Int how,
61 vki_sigset_t* oldset );
63 extern void VG_(clear_out_queued_signals)
64 ( ThreadId tid, /* OUT */ vki_sigset_t* saved_mask );
66 extern void VG_(kill_self)(Int sigNo);
68 /* These function synthesize a fault, as if the running instruction
69 had had a fault. These functions do not return - they longjmp back
70 into the scheduler so the signal can be delivered. */
71 extern void VG_(synth_fault) (ThreadId tid);
72 extern void VG_(synth_fault_mapping)(ThreadId tid, Addr addr);
73 extern void VG_(synth_fault_perms) (ThreadId tid, Addr addr);
74 extern void VG_(synth_sigill) (ThreadId tid, Addr addr);
75 extern void VG_(synth_sigtrap) (ThreadId tid);
76 extern void VG_(synth_sigbus) (ThreadId tid);
78 /* Extend the stack to cover addr, if possible */
79 extern Bool VG_(extend_stack)(Addr addr, UInt maxsize);
81 /* Forces the client's signal handler to SIG_DFL - generally just
82 before using that signal to kill the process. */
83 extern void VG_(set_default_handler)(Int sig);
85 #endif // __PUB_CORE_SIGNALS_H
87 /*--------------------------------------------------------------------*/
89 /*--------------------------------------------------------------------*/