68 lines
1.2 KiB
C
68 lines
1.2 KiB
C
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/*
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* File : backtrace.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, 2008 RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2008-07-29 Bernard first version from QiuYi implementation
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*/
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#include <rtthread.h>
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#ifdef __GNUC__
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/*
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-->High Address,Stack Top
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PC<-----|
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LR |
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IP |
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FP |
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...... |
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PC<-| |
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LR | |
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IP | |
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FP---|-- |
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...... |
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PC |
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LR |
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IP |
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FP---
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-->Low Address,Stack Bottom
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*/
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void rt_hw_backtrace(rt_uint32_t *fp, rt_uint32_t thread_entry)
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{
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rt_uint32_t i, pc, func_entry;
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pc = *fp;
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rt_kprintf("[0x%x]\n", pc-0xC);
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for(i=0; i<10; i++)
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{
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fp = *(fp - 3);
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pc = *fp ;
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func_entry = pc - 0xC;
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if(func_entry <= 0x30000000) break;
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if((func_entry == thread_entry))
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{
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rt_kprintf("EntryPoint:0x%x\n", func_entry);
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break;
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}
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rt_kprintf("[0x%x]\n", func_entry);
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}
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}
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#else
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void rt_hw_backtrace(rt_uint32_t *fp, rt_uint32_t thread_entry)
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{
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/* old compiler implementation */
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}
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#endif
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