2410test_005.c

ADS下关于2410的调试程序 启动部分由汇编完成 调试部分由c完成

#include<stdlib.h>
#include<string.h>
#include<stdio.h>
#include<rt_misc.h>

#include "def.h"
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"

//#pragma import(__use_no_semihosting_swi) //禁止使用semihosting支持的函数


extern unsigned int bottom_of_heap;

__value_in_regs struct __initial_stackheap __user_initial_stackheap(
        unsigned R0, unsigned SP, unsigned R2, unsigned SL)
{
    struct __initial_stackheap config;
    
    config.heap_base = (unsigned int)&bottom_of_heap; // defined in heap.s
                                                      // placed by scatterfile   
    config.stack_base = SP;   // inherit SP from the execution environment

    return config;
}


void main()
{
	int i;
	
	//__rt_lib_init(0,0);
	Uart_Printf("hello world!\n");
	__asm
    {
    	MOV R0,#'u'
    TXBusy0:
    	MOV R1,#0x50000010
    	LDR R2,[R1]
    	AND R2,R2,#0x4
    	TST R2,#4
    	BEQ TXBusy0
    	MOV R1,#0x50000020
    	STR R0,[R1]
    	//ldr	r1,
		//ldr	r2, [r1]
		//and	r2, r2, #(1 << 2)
		//tst	r2, #(1 << 2)
		//beq	TXBusy
		//ldr r1, =UTXH0	;0x500000020	
		//str	r0, [r1]
    	
    }
    //printf("hello!\n");
}