Question

MDK编译器报错

下面是代码
head.s内容如下：
IMPORT Main
AREA Init,CODE,READONLY

ENTRY

_start
MOV sp, #0x33000000
B Main ;/*跳转到C语言程序*/
END
main.c内容如下：
#define rWATCNT (*(volatile unsigned short int *)(0x53000008))
#define rWATCON (*(volatile unsigned int *)(0x53000000))
#define rWATDAT (*(volatile unsigned short int *)(0x53000004))
int Main()
{
rWATCON = 0x8039;
rWATCNT = 0x0800;
rWATDAT = 0x0800;

while(1)
{
// rWATCNT=0x0800;
}

return 0;
}
但是MDK报错
testled.s(1): error: A1163E: Unknown opcode Main , expecting opcode or Macro
Main.c(29): warning: #111-D: statement is unreachable
Main.c(31): warning: #1-D: last line of file ends without a newline

Answer 1

看看是不是要在Main.c中声明Main函数。extern。还有IMPORT Main不能顶格书写。

追问

问题是在.S文件里说Main函数不行。问题我IMPORT了。。