xref: /openbmc/linux/arch/hexagon/kernel/trampoline.S (revision bc5aa3a0)
1/*
2 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 and
6 * only version 2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301, USA.
17 */
18
19/*
20 * Trampoline sequences to be copied onto user stack.
21 * This consumes a little more space than hand-assembling
22 * immediate constants for use in C, but is more portable
23 * to future tweaks to the Hexagon instruction set.
24 */
25
26#include <asm/unistd.h>
27
28/*  Sig trampolines - call sys_sigreturn or sys_rt_sigreturn as appropriate */
29
30/*  plain sigreturn is gone.  */
31
32	.globl __rt_sigtramp_template
33__rt_sigtramp_template:
34	r6 = #__NR_rt_sigreturn;
35	trap0(#1);
36