[src/trunk]: src/common/lib/libc/arch/sparc/atomic Provide _atomic_cas_{16, 8}_up

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

details:   https://anonhg.NetBSD.org/src/rev/8418d2975414
branches:  trunk
changeset: 326441:8418d2975414
user:      martin <martin%NetBSD.org@localhost>
date:      Wed Jan 29 13:06:36 2014 +0000

description:
Provide _atomic_cas_{16,8}_up

diffstat:

 common/lib/libc/arch/sparc/atomic/Makefile.inc    |   5 ++-
 common/lib/libc/arch/sparc/atomic/atomic_cas_up.S |  26 ++++++++++++++++++++++-
 2 files changed, 28 insertions(+), 3 deletions(-)

diffs (56 lines):

diff -r b428f2315792 -r 8418d2975414 common/lib/libc/arch/sparc/atomic/Makefile.inc
--- a/common/lib/libc/arch/sparc/atomic/Makefile.inc    Wed Jan 29 12:56:28 2014 +0000
+++ b/common/lib/libc/arch/sparc/atomic/Makefile.inc    Wed Jan 29 13:06:36 2014 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile.inc,v 1.15 2012/11/28 21:39:59 martin Exp $
+#      $NetBSD: Makefile.inc,v 1.16 2014/01/29 13:06:36 martin Exp $
 
 .include <bsd.own.mk>
 
@@ -29,7 +29,8 @@
 .  endif
 
 .  if (${LIB} == "c" || ${LIB} == "pthread")
-CPPFLAGS+= -D__HAVE_ASM_ATOMIC_CAS_UP
+CPPFLAGS+= -D__HAVE_ASM_ATOMIC_CAS_UP -D__HAVE_ASM_ATOMIC_CAS_16_UP    \
+       -D__HAVE_ASM_ATOMIC_CAS_8_UP
 SRCS+= atomic_init_testset.c atomic_cas_up.S
 .  endif
 
diff -r b428f2315792 -r 8418d2975414 common/lib/libc/arch/sparc/atomic/atomic_cas_up.S
--- a/common/lib/libc/arch/sparc/atomic/atomic_cas_up.S Wed Jan 29 12:56:28 2014 +0000
+++ b/common/lib/libc/arch/sparc/atomic/atomic_cas_up.S Wed Jan 29 13:06:36 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: atomic_cas_up.S,v 1.1 2012/11/28 21:39:59 martin Exp $ */
+/*     $NetBSD: atomic_cas_up.S,v 1.2 2014/01/29 13:06:36 martin Exp $ */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -43,3 +43,27 @@
        retl
         mov    %o3, %o0                        ! return old value
 
+ENTRY(_atomic_cas_16_up)
+       .hidden _C_LABEL(_atomic_cas_16_up)
+RAS_START_ASM_HIDDEN(_atomic_cas_16)
+       lduh    [%o0], %o3                      ! get old value
+       cmp     %o1, %o3                        ! old == new?
+       beq,a   1f                              ! yes, do the store
+        sth    %o2, [%o0]                      ! (in the delay slot)
+RAS_END_ASM_HIDDEN(_atomic_cas_16)
+1:
+       retl
+        mov    %o3, %o0                        ! return old value
+
+ENTRY(_atomic_cas_8_up)
+       .hidden _C_LABEL(_atomic_cas_8_up)
+RAS_START_ASM_HIDDEN(_atomic_cas_8)
+       ldub    [%o0], %o3                      ! get old value
+       cmp     %o1, %o3                        ! old == new?
+       beq,a   1f                              ! yes, do the store
+        stb    %o2, [%o0]                      ! (in the delay slot)
+RAS_END_ASM_HIDDEN(_atomic_cas_8)
+1:
+       retl
+        mov    %o3, %o0                        ! return old value
+