/*
* 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 */