[src/trunk]: src/sys/arch/sparc64/sparc64 sparc64: Rename internal barrier ma...

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

details:   https://anonhg.NetBSD.org/src/rev/fc359af31639
branches:  trunk
changeset: 373601:fc359af31639
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Mon Feb 20 13:30:36 2023 +0000

description:
sparc64: Rename internal barrier macros to be clearer.

No functional change intended.

diffstat:

 sys/arch/sparc64/sparc64/lock_stubs.s |  14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diffs (43 lines):

diff -r 302b3cdc45f2 -r fc359af31639 sys/arch/sparc64/sparc64/lock_stubs.s
--- a/sys/arch/sparc64/sparc64/lock_stubs.s     Mon Feb 20 13:30:22 2023 +0000
+++ b/sys/arch/sparc64/sparc64/lock_stubs.s     Mon Feb 20 13:30:36 2023 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lock_stubs.s,v 1.12 2023/02/20 13:30:22 riastradh Exp $        */
+/*     $NetBSD: lock_stubs.s,v 1.13 2023/02/20 13:30:36 riastradh Exp $        */
 
 /*-
  * Copyright (c) 2002, 2006 The NetBSD Foundation, Inc.
@@ -41,11 +41,11 @@
 #define        CURLWP  (CPUINFO_VA+CI_CURLWP)
 
 #if defined(MULTIPROCESSOR)
-#define        MB_READ membar #LoadLoad | #LoadStore
-#define        MB_MEM  membar #LoadStore | #StoreStore
+#define        MB_ACQ  membar #LoadLoad | #LoadStore
+#define        MB_REL  membar #LoadStore | #StoreStore
 #else
-#define        MB_READ /* nothing */
-#define        MB_MEM  /* nothing */
+#define        MB_ACQ  /* nothing */
+#define        MB_REL  /* nothing */
 #endif
 
 #if !defined(LOCKDEBUG)
@@ -58,7 +58,7 @@
        sethi   %hi(CURLWP), %o1
        LDPTR   [%o1 + %lo(CURLWP)], %o1        ! current thread
        CASPTR  [%o0], %g0, %o1                 ! compare-and-swap
-       MB_READ
+       MB_ACQ
        brnz,pn %o1, 1f                         ! lock was unowned?
         nop
        retl                                    ! - yes, done
@@ -76,7 +76,7 @@
        sethi   %hi(CURLWP), %o1
        LDPTR   [%o1 + %lo(CURLWP)], %o1        ! current thread
        clr     %o2                             ! new value (0)
-       MB_MEM
+       MB_REL
        CASPTR  [%o0], %o1, %o2                 ! compare-and-swap
        cmp     %o1, %o2
        bne,pn  CCCR, 1f                        ! nope, hard case