declare memory as non-executable jic

diff --git a/reaper/reaper.asm b/reaper/reaper.asm
index b570481fecae54f9718811f2749287993fee9f49..0086a8f7ee23ad0b1c1ce032f8bb0eabdec7ef4c 100644 (file)
--- a/reaper/reaper.asm
+++ b/reaper/reaper.asm
@@ -1,5 +1,7 @@
-;;; Compact subhost repear program to merely wait for children to
-;;; "reap" them, i.e. let them exit.
+;;; This is a "repear" program that merely waits for child processes
+;;; to appear and "reap" them, i.e. read their exit status to let them
+;;; exit. The program allows an arbitrary first argument that is
+;;; indended for identifying the reaper process.
 
        format elf64 executable
        entry main
@@ -12,7 +14,6 @@ set:  dq -1   ; all bits set
        
 ;;; siginfo_t status -- all ignored
 status:        rept 16 { dq 0 }
-
 status$end:
        
 ;;; A code segment
@@ -67,3 +68,6 @@ clear:        stosq
        mov rdi, rax
        mov rax, qword 60
         syscall        ; exit program
+
+;;; The rest of memory is not executable
+       segment readable writable