LXR linux/arch/hexagon/include/uapi/asm/ptrace.h

   1/*
   2 * Ptrace definitions for the Hexagon architecture
   3 *
   4 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 and
   8 * only version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18 * 02110-1301, USA.
  19 */
  20
  21#ifndef _ASM_PTRACE_H
  22#define _ASM_PTRACE_H
  23
  24#include <asm/registers.h>
  25
  26#define instruction_pointer(regs) pt_elr(regs)
  27#define user_stack_pointer(regs) ((regs)->r29)
  28
  29#define profile_pc(regs) instruction_pointer(regs)
  30
  31/* kprobe-based event tracer support */
  32extern int regs_query_register_offset(const char *name);
  33extern const char *regs_query_register_name(unsigned int offset);
  34
  35#define current_pt_regs() \
  36        ((struct pt_regs *) \
  37         ((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
  38
  39#if CONFIG_HEXAGON_ARCH_VERSION >= 4
  40#define arch_has_single_step()  (1)
  41#endif
  42
  43
  44#endif
  45