程序编译出错,请教各位大虾

flatterbird

程序如下:
#include<stdio.h>

extern void strcopy(char *d,const char *s);
int main()
{
const char* srcstr="first string-source";
char dststr[]="second string-destination";
printf("before copying:\n");
printf("%s\n%s\n",srcstr,dststr);
strcopy(dststr,srcstr);
printf("after copying:\n");
printf("%s\n,%s\n",srcstr,dststr);
return 0;
}

AREA Scopy,CODE,READONLY
ENTRY
EXPORT strcopy
strcopy:
LDRB r2,[r1],#1
STRB r2,[r0],#1
CMP r2,#0
BNE strcopy
MOV pc,lr
END

编译后提示：Error:declaration lacks type/storage-class (assuming`int`):`AREA`