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/*--------------------------------------------------------------------*/
/*--- POSIX signals. pub_core_signals.h ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2017 Julian Seward
jseward@acm.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
The GNU General Public License is contained in the file COPYING.
*/
#ifndef __PUB_CORE_SIGNALS_H
#define __PUB_CORE_SIGNALS_H
//--------------------------------------------------------------------
// PURPOSE: This module implements all the signal handling stuff.
//--------------------------------------------------------------------
#include "pub_tool_signals.h" // I want to get rid of this header...
#include "pub_core_vki.h" // vki_sigset_t et al.
/* Highest signal the kernel will let us use */
extern Int VG_(max_signal);
/* Returns the name of the vki signal sigNo */
extern const HChar *VG_(signame)(Int sigNo);
/* Use high signals because native pthreads wants to use low */
#define VG_SIGVGKILL (VG_(max_signal)-0)
#define VG_SIGVGRTUSERMAX (VG_(max_signal)-1)
extern void VG_(sigstartup_actions) ( void );
/* Poll a thread's set of pending signals, and update the Thread's
context to deliver one (viz, create signal frames if needed) */
extern void VG_(poll_signals) ( ThreadId );
/* Fake system calls for signal handling. */
extern SysRes VG_(do_sys_sigaltstack) ( ThreadId tid, vki_stack_t* ss,
vki_stack_t* oss );
extern SysRes VG_(do_sys_sigaction) ( Int signo,
const vki_sigaction_toK_t* new_act,
vki_sigaction_fromK_t* old_act );
extern SysRes VG_(do_sys_sigprocmask) ( ThreadId tid, Int how,
vki_sigset_t* set,
vki_sigset_t* oldset );
extern void VG_(clear_out_queued_signals)
( ThreadId tid, /* OUT */ vki_sigset_t* saved_mask );
extern void VG_(kill_self)(Int sigNo);
/* These function synthesize a fault, as if the running instruction
had had a fault. These functions do not return - they longjmp back
into the scheduler so the signal can be delivered. */
extern void VG_(synth_fault) (ThreadId tid);
extern void VG_(synth_fault_mapping)(ThreadId tid, Addr addr);
extern void VG_(synth_fault_perms) (ThreadId tid, Addr addr);
extern void VG_(synth_sigill) (ThreadId tid, Addr addr);
extern void VG_(synth_sigtrap) (ThreadId tid);
extern void VG_(synth_sigbus) (ThreadId tid);
extern void VG_(synth_sigfpe) (ThreadId tid, UInt code);
/* Extend the stack to cover addr, if possible */
extern Bool VG_(extend_stack)(ThreadId tid, Addr addr);
/* Forces the client's signal handler to SIG_DFL - generally just
before using that signal to kill the process. */
extern void VG_(set_default_handler)(Int sig);
#endif // __PUB_CORE_SIGNALS_H
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
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