[POWERPC] Check that the syscall table matches the syscall numbers

Also check that __NR_syscalls has been updated appropriately.

Hopefully this will catch any out of order additions to the
table in the future.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/systbl_chk.sh b/arch/powerpc/kernel/systbl_chk.sh
new file mode 100644
index 000000000000..367d208301d2
--- /dev/null
+++ b/arch/powerpc/kernel/systbl_chk.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+#
+# Just process the CPP output from systbl_chk.c and complain
+# if anything is out of order.
+#
+# Copyright © 2008 IBM Corporation
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version
+# 2 of the License, or (at your option) any later version.
+
+awk     'BEGIN { num = -1; }    # Ignore the beginning of the file
+        /^#/ { next; }
+        /^[ \t]*$/ { next; }
+        /^START_TABLE/ { num = 0; next; }
+        /^END_TABLE/ {
+                if (num != $2) {
+                        printf "__NR_syscalls (%s) is not one more than the last syscall (%s)\n",
+                                $2, num - 1;
+                        exit(1);
+                }
+                num = -1;       # Ignore the rest of the file
+        }
+        {
+                if (num == -1) next;
+                if (($1 != -1) && ($1 != num)) {
+                        printf "Syscall %s out of order (expected %s)\n",
+                                $1, num;
+                        exit(1);
+                };
+                num++;
+        }' "$1"