From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- setjmp/longjmp.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 setjmp/longjmp.c (limited to 'setjmp/longjmp.c') diff --git a/setjmp/longjmp.c b/setjmp/longjmp.c new file mode 100644 index 0000000000..d4e4ef7740 --- /dev/null +++ b/setjmp/longjmp.c @@ -0,0 +1,40 @@ +/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include + + +/* Set the signal mask to the one specified in ENV, and jump + to the position specified in ENV, causing the setjmp + call there to return VAL, or 1 if VAL is 0. */ +void +longjmp (sigjmp_buf env, int val) +{ + if (env[0].__mask_was_saved) + /* Restore the saved signal mask. */ + (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask, + (sigset_t *) NULL); + + /* Call the machine-dependent function to restore machine state. */ + __longjmp (env[0].__jmpbuf, val ?: 1); +} + +weak_alias (longjmp, _longjmp) +weak_alias (longjmp, siglongjmp) -- cgit 1.4.1