[src/trunk]: src/sys If any argument of a syscall is a pointer, set SYCALL_AR...

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

details:   https://anonhg.NetBSD.org/src/rev/217782528154
branches:  trunk
changeset: 780691:217782528154
user:      matt <matt%NetBSD.org@localhost>
date:      Fri Aug 03 18:08:01 2012 +0000

description:
If any argument of a syscall is a pointer, set SYCALL_ARG_PTR as a flag.

diffstat:

 sys/kern/makesyscalls.sh |  10 +++++++++-
 sys/sys/systm.h          |   3 ++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diffs (48 lines):

diff -r 8538f2dae2a0 -r 217782528154 sys/kern/makesyscalls.sh
--- a/sys/kern/makesyscalls.sh  Fri Aug 03 15:59:04 2012 +0000
+++ b/sys/kern/makesyscalls.sh  Fri Aug 03 18:08:01 2012 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: makesyscalls.sh,v 1.124 2012/08/03 11:31:33 pooka Exp $
+#      $NetBSD: makesyscalls.sh,v 1.125 2012/08/03 18:08:01 matt Exp $
 #
 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
 # All rights reserved.
@@ -532,6 +532,7 @@
 
        isvarargs = 0;
        args64 = 0;
+       ptr = 0;
        while (f <= end) {
                if ($f == "...") {
                        f++;
@@ -568,6 +569,13 @@
                                sycall_flags = "SYCALL_ARG"argc-1"_64 | " sycall_flags;
                        args64++;
                }
+               if (index(argtype[argc], "*") != 0 && ptr == 0) {
+                       if (sycall_flags == "0")
+                               sycall_flags = "SYCALL_ARG_PTR";
+                       else
+                               sycall_flags = "SYCALL_ARG_PTR | " sycall_flags;
+                       ptr = 1;
+               }
                argname[argc]=$f;
                f += 2;                 # skip name, and any comma
        }
diff -r 8538f2dae2a0 -r 217782528154 sys/sys/systm.h
--- a/sys/sys/systm.h   Fri Aug 03 15:59:04 2012 +0000
+++ b/sys/sys/systm.h   Fri Aug 03 18:08:01 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: systm.h,v 1.256 2011/11/27 11:07:21 martin Exp $       */
+/*     $NetBSD: systm.h,v 1.257 2012/08/03 18:08:01 matt Exp $ */
 
 /*-
  * Copyright (c) 1982, 1988, 1991, 1993
@@ -143,6 +143,7 @@
 #define SYCALL_ARG6_64  0x0800000
 #define SYCALL_ARG7_64  0x1000000
 #define SYCALL_NOSYS    0x2000000 /* permanent nosys in sysent[] */
+#define        SYCALL_ARG_PTR  0x3000000 /* at least one argument is a pointer */
 #define SYCALL_RET_64_P(sy)    ((sy)->sy_flags & SYCALL_RET_64)
 #define SYCALL_ARG_64_P(sy, n) ((sy)->sy_flags & (SYCALL_ARG0_64 << (n)))
 #define        SYCALL_ARG_64_MASK(sy)  (((sy)->sy_flags >> 17) & 0xff)