x86: redefine REX64_PREFIX for clang, which doesn't like 'rex64/'.

Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>

diff --git a/xen/include/asm-x86/x86_64/asm_defns.h b/xen/include/asm-x86/x86_64/asm_defns.h
index 5c7159a7a501af89267fbf9086c439299013d0b0..b90c1a5ab71c597aeca6b7ffdd653ff630baccf0 100644 (file)
--- a/xen/include/asm-x86/x86_64/asm_defns.h
+++ b/xen/include/asm-x86/x86_64/asm_defns.h
@@ -84,6 +84,8 @@
 
 #ifdef __sun__
 #define REX64_PREFIX "rex64\\"
+#elif defined(__clang__)
+#define REX64_PREFIX ".byte 0x48; "
 #else
 #define REX64_PREFIX "rex64/"
 #endif