From 3ba50a15ebd976f7a88393e2e45dc14b6478b9a9 Mon Sep 17 00:00:00 2001 From: "Arnold D. Robbins" Date: Fri, 16 Jul 2010 14:52:31 +0300 Subject: Move to gawk-3.1.7. --- libsigsegv/src/leave-sigaltstack.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 libsigsegv/src/leave-sigaltstack.c (limited to 'libsigsegv/src/leave-sigaltstack.c') diff --git a/libsigsegv/src/leave-sigaltstack.c b/libsigsegv/src/leave-sigaltstack.c new file mode 100644 index 00000000..39749a55 --- /dev/null +++ b/libsigsegv/src/leave-sigaltstack.c @@ -0,0 +1,39 @@ +/* Leaving a signal handler executing on the alternate stack. + Copyright (C) 2002-2003 Bruno Haible + + 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, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include +#include +#if HAVE_SYS_SIGNAL_H +# include +#endif + +/* For MacOSX. */ +#ifndef SS_ONSTACK +#define SS_ONSTACK SA_ONSTACK +#endif + +void +sigsegv_reset_onstack_flag (void) +{ + stack_t ss; + + if (sigaltstack (NULL, &ss) >= 0) + { + ss.ss_flags &= ~SS_ONSTACK; + sigaltstack (&ss, NULL); + } +} -- cgit v1.2.3