--- a/gdb/amd64-linux-nat.c
+++ b/gdb/amd64-linux-nat.c
@@ -403,6 +403,11 @@ amd64_linux_prepare_to_resume (struct lwp_info *lwp)
 	    clear_status = 1;
 	  }
 
+printf("DR_CONTROL set 0x%lx\n",(long)state->dr_control_mirror);
+{char buf[100];
+sprintf(buf,"ls -l /proc/%d/exe", (int)lwp->ptid.pid);
+system(buf);
+}
       amd64_linux_dr_set (lwp->ptid, DR_CONTROL, state->dr_control_mirror);
 
       lwp->arch_private->debug_registers_changed = 0;