osdep.h: Move some compiler-specific things to compiler.h

osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h
index df9dd514f1..bdc9a608a3 100644
--- a/include/qemu/compiler.h
+++ b/include/qemu/compiler.h
@@ -42,6 +42,53 @@
 # define QEMU_PACKED __attribute__((packed))
 #endif
 
+#ifndef glue
+#define xglue(x, y) x ## y
+#define glue(x, y) xglue(x, y)
+#define stringify(s)	tostring(s)
+#define tostring(s)	#s
+#endif
+
+#ifndef likely
+#if __GNUC__ < 3
+#define __builtin_expect(x, n) (x)
+#endif
+
+#define likely(x)   __builtin_expect(!!(x), 1)
+#define unlikely(x)   __builtin_expect(!!(x), 0)
+#endif
+
+#ifndef container_of
+#define container_of(ptr, type, member) ({                      \
+        const typeof(((type *) 0)->member) *__mptr = (ptr);     \
+        (type *) ((char *) __mptr - offsetof(type, member));})
+#endif
+
+/* Convert from a base type to a parent type, with compile time checking.  */
+#ifdef __GNUC__
+#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
+    char __attribute__((unused)) offset_must_be_zero[ \
+        -offsetof(type, field)]; \
+    container_of(dev, type, field);}))
+#else
+#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
+#endif
+
+#define typeof_field(type, field) typeof(((type *)0)->field)
+#define type_check(t1,t2) ((t1*)0 - (t2*)0)
+
+#ifndef always_inline
+#if !((__GNUC__ < 3) || defined(__APPLE__))
+#ifdef __OPTIMIZE__
+#undef inline
+#define inline __attribute__ (( always_inline )) __inline__
+#endif
+#endif
+#else
+#undef inline
+#define inline always_inline
+#endif
+
 #define cat(x,y) x ## y
 #define cat2(x,y) cat(x,y)
 #define QEMU_BUILD_BUG_ON(x) \