Support to multi-threading and pthread interface (POSIX.1-2008) (#23)

[lunaix-os.git] / lunaix-os / includes / lunaix / compiler.h

diff --git a/lunaix-os/includes/lunaix/compiler.h b/lunaix-os/includes/lunaix/compiler.h
index a97c8c5732df99854783832d0a639f6e6adc6387..c3eab586a9c4f7494c457cfc04f2dc733c052d65 100644 (file)
--- a/lunaix-os/includes/lunaix/compiler.h
+++ b/lunaix-os/includes/lunaix/compiler.h
@@ -1,9 +1,41 @@
 #ifndef __LUNAIX_COMPILER_H
 #define __LUNAIX_COMPILER_H
 
-#define likely(x) __builtin_expect((x), 1)
-#define unlikely(x) __builtin_expect((x), 0)
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
 
 #define weak_alias(name) __attribute__((weak, alias(name)))
+#define weak __attribute__((weak))
 #define noret __attribute__((noreturn))
+#define optimize(opt) __attribute__((optimize(opt)))
+#define must_inline __attribute__((always_inline))
+#define must_emit __attribute__((used))
+#define unreachable __builtin_unreachable()
+
+#define clz(bits) __builtin_clz(bits)
+#define sadd_overflow(a, b, of) __builtin_sadd_overflow(a, b, of)
+#define umul_overflow(a, b, of) __builtin_umul_overflow(a, b, of)
+#define offsetof(f, m) __builtin_offsetof(f, m)
+
+#define prefetch_rd(ptr, ll) __builtin_prefetch((ptr), 0, ll)
+#define prefetch_wr(ptr, ll) __builtin_prefetch((ptr), 1, ll)
+
+#define stringify(v) #v
+#define stringify__(v) stringify(v)
+
+#define compact __attribute__((packed))
+#define align(v) __attribute__((aligned (v)))
+
+#define export_symbol(domain, namespace, symbol)\
+    typeof(symbol)* must_emit __SYMEXPORT_Z##domain##_N##namespace##_S##symbol = &(symbol)
+
+inline static void noret
+spin()
+{
+    volatile int __infloop = 1;
+    while (__infloop)
+        ;
+    unreachable;
+}
+
 #endif /* __LUNAIX_COMPILER_H */