[src/trunk]: src/sys/kern Don't output things in awk hash order. Sort first.

[dholland <dholland%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5c24f131756c
branches:  trunk
changeset: 1010869:5c24f131756c
user:      dholland <dholland%NetBSD.org@localhost>
date:      Thu Jun 11 03:25:35 2020 +0000

description:
Don't output things in awk hash order. Sort first.

diffstat:

 sys/kern/makesyscalls.sh |  28 +++++++++++++++++++++++++++-
 1 files changed, 27 insertions(+), 1 deletions(-)

diffs (50 lines):

diff -r 455b88a6076f -r 5c24f131756c sys/kern/makesyscalls.sh
--- a/sys/kern/makesyscalls.sh  Thu Jun 11 02:32:06 2020 +0000
+++ b/sys/kern/makesyscalls.sh  Thu Jun 11 03:25:35 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: makesyscalls.sh,v 1.180 2020/06/11 02:21:26 dholland Exp $
+#      $NetBSD: makesyscalls.sh,v 1.181 2020/06/11 03:25:35 dholland Exp $
 #
 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
 # All rights reserved.
@@ -1111,6 +1111,24 @@
        printf("%s: line %d: unrecognized keyword %s\n", infile, NR, $2)
        exit 1
 }
+
+function sort(arr, n,    i, j, t) {
+       # this is going to be bubble sort because I cannot be bothered to
+       # write a real sort, this whole script is hopefully going to be
+       # deprecated before much longer, and performance of a few hundred
+       # things (even interpreted in awk) should be adequate.
+       for (i = 1; i <= n; i++) {
+               for (j = i + 1; j <= n; j++) {
+                       if (arr[j] < arr[i]) {
+                               t = arr[i];
+                               arr[i] = arr[j];
+                               arr[j] = t;
+                       }
+               }
+       }
+       return 0;
+}
+
 END {
        # output pipe() syscall with its special retval[2] handling
        if (rumphaspipe) {
@@ -1134,7 +1152,15 @@
        }
 
        # print default rump syscall interfaces
+       # be sure to generate them in a deterministic order, not awk
+       # hash order as would happen with a plain "for (var in funcseen)"
+       numfuncseenvars = 0;
        for (var in funcseen) {
+               funcseenvars[++numfuncseenvars] = var;
+       }
+       sort(funcseenvars, numfuncseenvars)
+       for (i = 1; i <= numfuncseenvars; i++) {
+               var = funcseenvars[i];
                printf("#ifndef RUMP_SYS_RENAME_%s\n", \
                    toupper(var)) > rumpcallshdr
                printf("#define RUMP_SYS_RENAME_%s rump___sysimpl_%s\n", \