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/*--------------------------------------------------------------------*/
/*--- Create/destroy signal delivery frames. ---*/
/*--- pub_core_sigframe.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_SIGFRAME_H
#define __PUB_CORE_SIGFRAME_H
#include "pub_core_basics.h" // VG_ macro
#include "pub_core_vki.h" // vki_sigset_t et al.
//--------------------------------------------------------------------
// PURPOSE: This module creates and destroys signal delivery frames
// for client threads, saving/restoring the thread CPU state in the
// frame appropriately.
//--------------------------------------------------------------------
/* This is an arbitrary si_code that we only use internally for SIGSEGV.
It corresponds to the value SI_KERNEL on Linux, but that's not really
of any significance. */
#define VKI_SEGV_MADE_UP_GPF 0x80
/* Create a signal frame for thread 'tid'. */
extern
void VG_(sigframe_create) ( ThreadId tid,
Bool on_altstack,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *uc,
void *handler,
UInt flags,
const vki_sigset_t *mask,
void *restorer );
/* Remove a signal frame from thread 'tid's stack, and
restore the CPU state from it. */
#ifdef VGO_freebsd
extern
void VG_(sigframe_destroy)( ThreadId tid );
#else
extern
void VG_(sigframe_destroy)( ThreadId tid, Bool isRT );
#endif
#if defined(VGO_solaris)
extern
void VG_(sigframe_return)(ThreadId tid, const vki_ucontext_t *uc);
#endif
#endif // __PUB_CORE_SIGFRAME_H
/*--------------------------------------------------------------------*/
/*--- end pub_core_sigframe.h ---*/
/*--------------------------------------------------------------------*/
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