text: /*
   * arch/arm/include/asm/unwind.h
   *
   * Copyright (C) 2008 ARM Limited
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
   */
  
  #ifndef __ASM_UNWIND_H
  #define __ASM_UNWIND_H
  
  #ifndef __ASSEMBLY__
  
  /* Unwind reason code according the the ARM EABI documents */
  enum unwind_reason_code {
  	URC_OK = 0,			/* operation completed successfully */
  	URC_CONTINUE_UNWIND = 8,
  	URC_FAILURE = 9			/* unspecified failure of some kind */
  };
  
  struct unwind_idx {
  	unsigned long addr_offset;
  	unsigned long insn;
  };
  
  struct unwind_table {
  	struct list_head list;
  	const struct unwind_idx *start;
  	const struct unwind_idx *origin;
  	const struct unwind_idx *stop;
  	unsigned long begin_addr;
  	unsigned long end_addr;
  };
  
  extern struct unwind_table *unwind_table_add(unsigned long start,
  					     unsigned long size,
  					     unsigned long text_addr,
  					     unsigned long text_size);
  extern void unwind_table_del(struct unwind_table *tab);
  extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk);
  
  #endif	/* !__ASSEMBLY__ */
  
  #ifdef CONFIG_ARM_UNWIND
  #define UNWIND(code...)		code
  #else
  #define UNWIND(code...)
  #endif
  
  #endif	/* __ASM_UNWIND_H */
  