From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/alpha/bsd-_setjmp.S | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 sysdeps/alpha/bsd-_setjmp.S (limited to 'sysdeps/alpha/bsd-_setjmp.S') diff --git a/sysdeps/alpha/bsd-_setjmp.S b/sysdeps/alpha/bsd-_setjmp.S new file mode 100644 index 0000000000..9947d8f45a --- /dev/null +++ b/sysdeps/alpha/bsd-_setjmp.S @@ -0,0 +1,30 @@ +/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. Alpha version. +Copyright (C) 1994 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. */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 0)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include + +ENTRY (setjmp) + lda $27, __sigsetjmp /* Load address to jump to. */ + bis $31, $31, $17 /* Pass a second argument of zero. */ + jmp $31, ($27), __sigsetjmp /* Call __sigsetjmp. */ + .end setjmp -- cgit v1.2.3