1 files changed, 112 insertions, 0 deletions
diff --git a/src/include/qemu/compiler.h b/src/include/qemu/compiler.h
new file mode 100644
index 0000000..0abf0f8
--- /dev/null
+++ b/src/include/qemu/compiler.h
@@ -0,0 +1,112 @@
+/* public domain */
+
+#ifndef COMPILER_H
+#define COMPILER_H
+
+#include "config-host.h"
+
+/*----------------------------------------------------------------------------
+| The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler.
+| The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h.
+*----------------------------------------------------------------------------*/
+#if defined(__GNUC__) && defined(__GNUC_MINOR__)
+# define QEMU_GNUC_PREREQ(maj, min) \
+         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define QEMU_GNUC_PREREQ(maj, min) 0
+#endif
+
+#define QEMU_NORETURN __attribute__ ((__noreturn__))
+
+#if QEMU_GNUC_PREREQ(3, 4)
+#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+#else
+#define QEMU_WARN_UNUSED_RESULT
+#endif
+
+#if QEMU_GNUC_PREREQ(4, 0)
+#define QEMU_SENTINEL __attribute__((sentinel))
+#else
+#define QEMU_SENTINEL
+#endif
+
+#if QEMU_GNUC_PREREQ(4, 3)
+#define QEMU_ARTIFICIAL __attribute__((always_inline, artificial))
+#else
+#define QEMU_ARTIFICIAL
+#endif
+
+#if defined(_WIN32)
+# define QEMU_PACKED __attribute__((gcc_struct, packed))
+#else
+# 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 QEMU_BUILD_BUG_ON(x) \
+    typedef char glue(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused));
+
+#if defined __GNUC__
+# if !QEMU_GNUC_PREREQ(4, 4)
+   /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
+#  define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
+# else
+   /* Use gnu_printf when supported (qemu uses standard format strings). */
+#  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
+#  if defined(_WIN32)
+    /* Map __printf__ to __gnu_printf__ because we want standard format strings
+     * even when MinGW or GLib include files use __printf__. */
+#   define __printf__ __gnu_printf__
+#  endif
+# endif
+#else
+#define GCC_FMT_ATTR(n, m)
+#endif
+
+#endif /* COMPILER_H */