linux/arch/hexagon/kernel/trampoline.S
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   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