retarget.c

ST ARM STR7系列在应用编程示例.采用串口下载.可供参考

/******************** (C) COPYRIGHT 2004 STMicroelectronics ********************
* File Name          : retarget.c
* Author             : MCD Application Team
* Date First Issued  : 10/25/2004
* Description        : This file is used to configure the stack and the heap bases
********************************************************************************
* History:
*  10/25/2004 : Created
*  11/24/2004 : IAP Version 1.0
********************************************************************************
THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A 
RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR 
CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT OF SUCH 
SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN
IN CONNECTION WITH THEIR PRODUCTS.
********************************************************************************/
#include <stdio.h>

__value_in_regs struct R0_R3 {unsigned heap_base, stack_base, heap_limit, stack_limit;} 
    __user_initial_stackheap(unsigned int R0, unsigned int SP, unsigned int R2, unsigned int SL)
{
    struct R0_R3 config;

    config.heap_base =  0x20010000-(1024*4);
    config.stack_base = 0x20010000;

/*
To place heap_base directly above the ZI area, use:
    extern unsigned int Image$$ZI$$Limit;
    config.heap_base = (unsigned int)&Image$$ZI$$Limit;
(or &Image$$region_name$$ZI$$Limit for scatterloaded images)

To specify the limits for the heap & stack, use e.g:
    config.heap_limit = SL;
    config.stack_limit = SL;
*/

    return config;
}
/******************* (C) COPYRIGHT 2004 STMicroelectronics *****END OF FILE****/