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/*
* arch/ubicom32/include/asm/stacktrace.h
* Stacktrace functions for the Ubicom32 architecture.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_STACKTRACE_H
#define _ASM_UBICOM32_STACKTRACE_H
#define between(a, b, c) (( \
((unsigned long) a) >= ((unsigned long) b)) && \
(((unsigned long)a) <= ((unsigned long)c)))
/*
* These symbols are filled in by the linker.
*/
extern unsigned long _stext;
extern unsigned long _etext;
/* OCM text goes from __ocm_text_run_begin to __data_begin */
extern unsigned long __ocm_text_run_begin;
extern unsigned long __data_begin;
/* Account for OCM case - see stacktrace.c maybe combine(also trap.c) */
/*
* ubicom32_is_kernel()
*
* Check to see if the given address belongs to the kernel.
* NOMMU does not permit any other means.
*/
static inline int ubicom32_is_kernel(unsigned long addr)
{
int is_kernel = between(addr, &_stext, &_etext) || \
between(addr, &__ocm_text_run_begin, &__data_begin);
#ifdef CONFIG_MODULES
if (!is_kernel)
is_kernel = is_module_address(addr);
#endif
return is_kernel;
}
extern unsigned long stacktrace_iterate(
unsigned long **trace,
unsigned long stext, unsigned long etext,
unsigned long ocm_stext, unsigned long ocm_etext,
unsigned long sstack, unsigned long estack);
#ifdef CONFIG_STACKTRACE
void stacktrace_save_entries(struct task_struct *tsk, struct stack_trace *trace, unsigned long sp);
#endif
#endif /* _ASM_UBICOM32_STACKTRACE_H */
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