ADD file via upload

pthread.h

@@ -0,0 +1,20 @@
+#define __LIBRARY__
+#include <unistd.h>
+
+#ifndef _PTHREAD_H_
+#define _PTHREAD_H_
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+/*声明线程API函数*/
+
+_syscall1(int,pthread_attr_init,pthread_attr_t *,attr);
+_syscall3(int,thread_fork,const pthread_attr_t *,attr,void *,start_routine,void *,arg);
+_syscall2(int,thread_join,pthread_t,thread,void **,value_ptr);
+_syscall1(int,thread_exit,void *,value_ptr);
+
+#endif
+
+