检测错误码

source/soft/mystdlib.c

@@ -144,12 +144,17 @@ void *malloc(uint32_t size)
 {  
   mallco_dev *self=&g_self;
   uint32_t offset;  
+  int used=0;
 	void *ret_addr=NULL;
 	offset=mem_malloc(size); 
 	if (offset!=0XFFFFFFFF)
 	{
 		ret_addr=(void*)((uint32_t)self->membase+offset);  
 	}
+  else{
+    used=mem_perused();
+    param_check(used);
+  }
 	return ret_addr;  
 }