+/* ptrace.h 4.1 84/04/11 */
+
+#ifndef _PTRACE_
+#define _PTRACE_
+
+#define PT_TRACE_ME 0 /* child declares it's being traced */
+#define PT_READ_I 1 /* read word in child's I space */
+#define PT_READ_D 2 /* read word in child's D space */
+#define PT_READ_U 3 /* read word in child's user structure */
+#define PT_WRITE_I 4 /* write word in child's I space */
+#define PT_WRITE_D 5 /* write word in child's D space */
+#define PT_WRITE_U 6 /* write word in child's user structure */
+#define PT_CONTINUE 7 /* continue the child */
+#define PT_KILL 8 /* kill the child process */
+#define PT_STEP 9 /* single step the child */
+
+#endif