From 38d2985e9b4d507e97a7aab9a2c08d5410b080b3 Mon Sep 17 00:00:00 2001 From: jake Date: Mon, 29 Apr 2002 18:14:44 +0000 Subject: Add an alternate signal trampoline to libc; add a wrapper for the sigtramp install sysarch, to be called from _start. This will allow the stack to be mapped non-executable, as required by the sparc v9 abi. --- lib/libc/sparc64/sys/sigcode.S | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 lib/libc/sparc64/sys/sigcode.S (limited to 'lib/libc/sparc64/sys/sigcode.S') diff --git a/lib/libc/sparc64/sys/sigcode.S b/lib/libc/sparc64/sys/sigcode.S new file mode 100644 index 0000000..5ebc4c7 --- /dev/null +++ b/lib/libc/sparc64/sys/sigcode.S @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2002 Jake Burkholder. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include "assym.s" + +ENTRY(__sigcode) + call %o4 + nop + call sigreturn + add %sp, SPOFF + CCFSZ + SF_UC, %o0 + call exit + mov 1, %o0 + illtrap +END(__sigcode) -- cgit v1.1