coregrind/pub_core_sigframe.h

   1
   2 /*--------------------------------------------------------------------*/
   3 /*--- Create/destroy signal delivery frames.                       ---*/
   4 /*---                                          pub_core_sigframe.h ---*/
   5 /*--------------------------------------------------------------------*/
   6
   7 /*
   8    This file is part of Valgrind, a dynamic binary instrumentation
   9    framework.
  10
  11    Copyright (C) 2000-2017 Julian Seward
  12       jseward@acm.org
  13
  14    This program is free software; you can redistribute it and/or
  15    modify it under the terms of the GNU General Public License as
  16    published by the Free Software Foundation; either version 2 of the
  17    License, or (at your option) any later version.
  18
  19    This program is distributed in the hope that it will be useful, but
  20    WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22    General Public License for more details.
  23
  24    You should have received a copy of the GNU General Public License
  25    along with this program; if not, write to the Free Software
  26    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  27    02111-1307, USA.
  28
  29    The GNU General Public License is contained in the file COPYING.
  30 */
  31
  32 #ifndef __PUB_CORE_SIGFRAME_H
  33 #define __PUB_CORE_SIGFRAME_H
  34
  35 #include "pub_core_basics.h"     // VG_ macro
  36 #include "pub_core_vki.h"        // vki_sigset_t et al.
  37
  38 //--------------------------------------------------------------------
  39 // PURPOSE: This module creates and destroys signal delivery frames
  40 // for client threads, saving/restoring the thread CPU state in the
  41 // frame appropriately.
  42 //--------------------------------------------------------------------
  43
  44 /* This is an arbitrary si_code that we only use internally for SIGSEGV.
  45    It corresponds to the value SI_KERNEL on Linux, but that's not really
  46    of any significance. */
  47 #define VKI_SEGV_MADE_UP_GPF 0x80
  48
  49 /* Create a signal frame for thread 'tid'. */
  50 extern
  51 void VG_(sigframe_create) ( ThreadId tid,
  52                             Bool on_altstack,
  53                             Addr sp_top_of_frame,
  54                             const vki_siginfo_t *siginfo,
  55                             const struct vki_ucontext *uc,
  56                             void *handler,
  57                             UInt flags,
  58                             const vki_sigset_t *mask,
  59                             void *restorer );
  60
  61 /* Remove a signal frame from thread 'tid's stack, and
  62    restore the CPU state from it. */
  63 extern
  64 void VG_(sigframe_destroy)( ThreadId tid, Bool isRT );
  65
  66 #if defined(VGO_solaris)
  67 extern
  68 void VG_(sigframe_return)(ThreadId tid, const vki_ucontext_t *uc);
  69 #endif
  70
  71 #endif   // __PUB_CORE_SIGFRAME_H
  72
  73 /*--------------------------------------------------------------------*/
  74 /*--- end                                      pub_core_sigframe.h ---*/
  75 /*--------------------------------------------------------------------*/