X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc64%2Ffutex.h;h=dee40206b221f8d30d1e011faf79eedbea81402c;hb=2833c28aa0d0326780acfa61149a2a02dcb2c9b4;hp=0caf60147e9746ed58627625066bff7cc3297aa9;hpb=e95a9ec1bb66e07b138861c743192f06e7b3e4de;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-sparc64/futex.h b/include/asm-sparc64/futex.h
index 0caf60147e9..dee40206b22 100644
--- a/include/asm-sparc64/futex.h
+++ b/include/asm-sparc64/futex.h
@@ -20,7 +20,7 @@
 	"4:	ba	3b\n"				\
 	"	 mov	%5, %0\n"			\
 	"	.previous\n"				\
-	"	.section __ex_table,#alloc\n"		\
+	"	.section __ex_table,\"a\"\n"		\
 	"	.align	4\n"				\
 	"	.word	1b, 4b\n"			\
 	"	.word	2b, 4b\n"			\
@@ -83,4 +83,28 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
 	return ret;
 }
 
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+	__asm__ __volatile__(
+	"\n1:	lduwa	[%2] %%asi, %0\n"
+	"2:	casa	[%2] %%asi, %0, %1\n"
+	"3:\n"
+	"	.section .fixup,#alloc,#execinstr\n"
+	"	.align	4\n"
+	"4:	ba	3b\n"
+	"	 mov	%3, %0\n"
+	"	.previous\n"
+	"	.section __ex_table,\"a\"\n"
+	"	.align	4\n"
+	"	.word	1b, 4b\n"
+	"	.word	2b, 4b\n"
+	"	.previous\n"
+	: "=&r" (oldval)
+	: "r" (newval), "r" (uaddr), "i" (-EFAULT)
+	: "memory");
+
+	return oldval;
+}
+
 #endif /* !(_SPARC64_FUTEX_H) */