diff options
Diffstat (limited to 'sysdeps/s390/s390-32/__longjmp.c')
-rw-r--r-- | sysdeps/s390/s390-32/__longjmp.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/__longjmp.c b/sysdeps/s390/s390-32/__longjmp.c new file mode 100644 index 0000000000..3020abd810 --- /dev/null +++ b/sysdeps/s390/s390-32/__longjmp.c @@ -0,0 +1,43 @@ +/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). + + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <sysdep.h> +#include <setjmp.h> +#include <bits/setjmp.h> +#include <stdlib.h> +#include <unistd.h> + +/* Jump to the position specified by ENV, causing the + setjmp call there to return VAL, or 1 if VAL is 0. */ +void +__longjmp (__jmp_buf env, int val) +{ + /* Restore registers and jump back. */ + asm volatile ("lr %%r2,%0\n\t" /* PUT val in grp 2. */ + "ld %%f6,48(%1)\n\t" + "ld %%f4,40(%1)\n\t" + "lm %%r6,%%r15,0(%1)\n\t" + "br %%r14" + : : "r" (val == 0 ? 1 : val), + "a" (env) : "2" ); + + /* Avoid `volatile function does return' warnings. */ + for (;;); +} |