fdc: fix FD_SR0_SEEK for non-DMA transfers and multi sectors transfers

[qemu.git] / compiler.h

diff --git a/compiler.h b/compiler.h
index c734a71c67ac1a65d3ec45ccaceb6624226a5b68..55d7d74775e02f7d3b30c2d771d0292b3779620d 100644 (file)
--- a/compiler.h
+++ b/compiler.h
@@ -50,16 +50,20 @@
 #   define __printf__ __gnu_printf__
 #  endif
 # endif
-#if defined(_WIN32)
-#define GCC_WEAK __attribute__((weak))
-#define GCC_WEAK_DECL GCC_WEAK
-#else
-#define GCC_WEAK __attribute__((weak))
-#define GCC_WEAK_DECL
-#endif
+# if defined(__APPLE__)
+#  define QEMU_WEAK_ALIAS(newname, oldname) \
+        static typeof(oldname) weak_##newname __attribute__((unused, weakref(#oldname)))
+#  define QEMU_WEAK_REF(newname, oldname) (weak_##newname ? weak_##newname : oldname)
+# else
+#  define QEMU_WEAK_ALIAS(newname, oldname) \
+        typeof(oldname) newname __attribute__((weak, alias (#oldname)))
+#  define QEMU_WEAK_REF(newname, oldname) newname
+# endif
 #else
 #define GCC_ATTR /**/
 #define GCC_FMT_ATTR(n, m)
+#define QEMU_WEAK_ALIAS(newname, oldname) \
+        _Pragma("weak " #newname "=" #oldname)
 #endif
 
 #endif /* COMPILER_H */