$NetBSD: patch-ae,v 1.3 2025/12/16 10:19:11 hauke Exp $

* adds support for mutexes on aarch64
* fixes build failure on MIPS arch with -mips1.
* adds mutex support for sparc v[789]

--- dbinc/mutex_int.h.orig	2025-12-15 13:35:56.838500475 +0000
+++ dbinc/mutex_int.h
@@ -751,14 +751,24 @@ typedef unsigned char tsl_t;
 	!__r;								\
 })
 
+#if defined (__sparc_v9__)
 #define	MUTEX_UNSET(tsl)	(*(tsl) = 0, MUTEX_MEMBAR(tsl))
-#define	MUTEX_INIT(tsl)         (MUTEX_UNSET(tsl), 0)
 #define	MUTEX_MEMBAR(x)	\
 	({ __asm__ volatile ("membar #StoreStore|#StoreLoad|#LoadStore"); })
 #define	MEMBAR_ENTER() \
 	({ __asm__ volatile ("membar #StoreStore|#StoreLoad"); })
 #define	MEMBAR_EXIT() \
 	({ __asm__ volatile ("membar #StoreStore|#LoadStore"); })
+#else
+#define	MUTEX_UNSET(tsl) ({						\
+	__asm__ volatile ("stbar");					\
+	*(tsl) = 0; })
+#define	MUTEX_MEMBAR(x) \
+	({ __asm__ volatile ("stbar"); })
+#define	MEMBAR_ENTER()
+#define	MEMBAR_EXIT()
+#endif
+#define	MUTEX_INIT(tsl)         (MUTEX_UNSET(tsl), 0)
 #endif
 #endif