[src/trunk]: src/sys/arch/m68k/include Nix mb_* on m68k.

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

details:   https://anonhg.NetBSD.org/src/rev/fe63000af87b
branches:  trunk
changeset: 846719:fe63000af87b
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Fri Nov 29 20:05:49 2019 +0000

description:
Nix mb_* on m68k.

diffstat:

 sys/arch/m68k/include/lock.h  |  20 +-------------------
 sys/arch/m68k/include/mutex.h |   6 +++---
 2 files changed, 4 insertions(+), 22 deletions(-)

diffs (52 lines):

diff -r 6c154a1b5c9a -r fe63000af87b sys/arch/m68k/include/lock.h
--- a/sys/arch/m68k/include/lock.h      Fri Nov 29 20:05:38 2019 +0000
+++ b/sys/arch/m68k/include/lock.h      Fri Nov 29 20:05:49 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lock.h,v 1.15 2017/09/17 00:01:07 christos Exp $       */
+/*     $NetBSD: lock.h,v 1.16 2019/11/29 20:05:49 riastradh Exp $      */
 
 /*-
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -101,22 +101,4 @@
        *alp = __SIMPLELOCK_UNLOCKED;
 }
 
-static __inline void
-mb_read(void)
-{
-       __asm volatile("" : : : "memory");
-}
-
-static __inline void
-mb_write(void)
-{
-       __asm volatile("" : : : "memory");
-}
-
-static __inline void
-mb_memory(void)
-{
-       __asm volatile("" : : : "memory");
-}
-
 #endif /* _M68K_LOCK_H_ */
diff -r 6c154a1b5c9a -r fe63000af87b sys/arch/m68k/include/mutex.h
--- a/sys/arch/m68k/include/mutex.h     Fri Nov 29 20:05:38 2019 +0000
+++ b/sys/arch/m68k/include/mutex.h     Fri Nov 29 20:05:49 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mutex.h,v 1.7 2008/04/28 20:23:26 martin Exp $ */
+/*     $NetBSD: mutex.h,v 1.8 2019/11/29 20:05:49 riastradh Exp $      */
 
 /*-
  * Copyright (c) 2002, 2007 The NetBSD Foundation, Inc.
@@ -62,8 +62,8 @@
 #define        __HAVE_SIMPLE_MUTEXES           1
 #define        __HAVE_MUTEX_STUBS              1
 
-#define        MUTEX_RECEIVE(mtx)              mb_read()
-#define        MUTEX_GIVE(mtx)                 mb_memory()
+#define        MUTEX_RECEIVE(mtx)              __insn_barrier()
+#define        MUTEX_GIVE(mtx)                 __insn_barrier()
 
 #define        MUTEX_CAS(p, o, n)              (atomic_cas_uint((p), (o), (n)) == (o))