x86/emul: add likely()/unlikely() to test harness

Fix a build problem introduced in c/s 122dd9575c7 "x86emul:
in_longmode() should not ignore ->read_msr() errors" by providing an
implementation of likely()/unlikely().

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Cherrypicked out of:

master commit: 3e84c8da7d2c5442a12789dae7163dca6c0e154f
master date: 2016-12-02 17:23:01 +0000

diff --git a/tools/tests/x86_emulator/x86_emulate.c b/tools/tests/x86_emulator/x86_emulate.c
index c46b7fcc7dee0719a35c7cad3c44f35964774aba..19d8385708ed33b291cecc7e2a7427da82e980b3 100644 (file)
--- a/tools/tests/x86_emulator/x86_emulate.c
+++ b/tools/tests/x86_emulator/x86_emulate.c
@@ -50,4 +50,7 @@ typedef bool bool_t;
 #define __init
 #define __maybe_unused __attribute__((__unused__))
 
+#define likely(x)     __builtin_expect(!!(x), true)
+#define unlikely(x)   __builtin_expect(!!(x), false)
+
 #include "x86_emulate/x86_emulate.c"