arch/hexagon/kernel/trampoline.S

   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);