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[src/trunk]: src/sys/external/bsd/common/include/asm linux: Use dsb(sy/st/ld)...
details: https://anonhg.NetBSD.org/src/rev/7248c9fed879
branches: trunk
changeset: 368562:7248c9fed879
user: riastradh <riastradh%NetBSD.org@localhost>
date: Tue Jul 19 16:38:22 2022 +0000
description:
linux: Use dsb(sy/st/ld) from arm/cpufunc.h for mb/wmb/rmb.
Works on more Arm CPU types this way. From skrll.
diffstat:
sys/external/bsd/common/include/asm/barrier.h | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diffs (27 lines):
diff -r a6d21c1ab738 -r 7248c9fed879 sys/external/bsd/common/include/asm/barrier.h
--- a/sys/external/bsd/common/include/asm/barrier.h Tue Jul 19 08:22:34 2022 +0000
+++ b/sys/external/bsd/common/include/asm/barrier.h Tue Jul 19 16:38:22 2022 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: barrier.h,v 1.15 2022/07/17 22:02:23 riastradh Exp $ */
+/* $NetBSD: barrier.h,v 1.16 2022/07/19 16:38:22 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -51,11 +51,13 @@
* doesn't pass around the bus space tag and handle needed for that.
*/
#if defined(__aarch64__)
-#define mb() __asm __volatile ("dsb sy" ::: "memory")
-#define wmb() __asm __volatile ("dsb st" ::: "memory")
-#define rmb() __asm __volatile ("dsb ld" ::: "memory")
+#include <arm/cpufunc.h>
+#define mb() dsb(sy)
+#define wmb() dsb(st)
+#define rmb() dsb(ld)
#elif defined(__arm__)
-#define mb() __asm __volatile ("dsb" ::: "memory")
+#include <arm/cpufunc.h>
+#define mb() dsb()
#define wmb() mb()
#define rmb() mb()
#elif defined(__i386__) || defined(__x86_64__)
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