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barebox
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Add dump_stack function 

At least ARM allows us to dump the stack, but we currently
have no prototype for this. Add a dump_stack prototype and
provide a static inline function for architectures without
stack dump support. Also, call dump_stack() in panic() to
provide more information in the case of a panic.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-01-26 12:26:22 +01:00
parent 641dfaa3a8
commit 79c2f03aee
4 changed files with 19 additions and 36 deletions
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5
arch/arm/cpu/interrupts.c
View File

@ -73,6 +73,11 @@ void show_regs (struct pt_regs *regs)
#endif
}
void dump_stack(void)
{
unwind_backtrace(NULL);
}
static void __noreturn do_exception(struct pt_regs *pt_regs)
{
show_regs(pt_regs);

39
arch/arm/include/asm/barebox.h
View File

@ -1,41 +1,8 @@
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program 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.
*
* 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
*
********************************************************************
* NOTE: This header file defines an interface to barebox. Including
* this (unmodified) header file in another file is considered normal
* use of barebox, and does *not* fall under the heading of "derived
* work".
********************************************************************
*/
#ifndef _BAREBOX_H_
#define _BAREBOX_H_ 1
//typedef struct bd_info {} bd_t;
#ifdef CONFIG_ARM_UNWIND
#define ARCH_HAS_STACK_DUMP
#endif
#endif /* _BAREBOX_H_ */

9
include/common.h
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@ -119,6 +119,15 @@ uint32_t crc32_no_comp(uint32_t, const void*, unsigned int);
/* common/console.c */
int ctrlc (void);
#ifdef ARCH_HAS_STACK_DUMP
void dump_stack(void);
#else
static inline void dump_stack(void)
{
printf("no stack data available\n");
}
#endif
#define MEMAREA_SIZE_SPECIFIED 1
struct memarea_info {

2
lib/vsprintf.c
View File

@ -625,6 +625,8 @@ void __noreturn panic(const char *fmt, ...)
putchar('\n');
va_end(args);
dump_stack();
led_trigger(LED_TRIGGER_PANIC, TRIGGER_ENABLE);
#if defined (CONFIG_PANIC_HANG)