Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * arch/sh/kernel/stacktrace.c

 *

 * Stack trace management functions

 *

 *  Copyright (C) 2006  Paul Mundt

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 */

#include <linux/sched.h>

#include <linux/stacktrace.h>

#include <linux/thread_info.h>

#include <asm/ptrace.h>

/*

 * Save stack-backtrace addresses into a stack_trace buffer.

 */

void save_stack_trace(struct stack_trace *trace)

{

        unsigned long *sp = (unsigned long *)current_stack_pointer;

        while (!kstack_end(sp)) {

                unsigned long addr = *sp++;

                if (__kernel_text_address(addr)) {

                        if (trace->skip > 0)

                                trace->skip--;

                        else

                                trace->entries[trace->nr_entries++] = addr;

                        if (trace->nr_entries >= trace->max_entries)

                                break;

                }

        }

}