rewrite the device subsystem interfaces (#48)

[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 a0b83747b2401cc62df3b7ade9cb30efc7ec9596..ffc73c885e33a7beba59d4a4c43e1be68cbffe1c 100644 (file)
--- a/lunaix-os/includes/lunaix/compiler.h
+++ b/lunaix-os/includes/lunaix/compiler.h
@@ -7,16 +7,30 @@
 #define __section(name)         __attribute__((section(name)))
 #define weak_alias(name)        __attribute__((weak, alias(name)))
 #define optimize(opt)           __attribute__((optimize(opt)))
-#define weak                    __attribute__((weak))
+#define _weak                    __attribute__((weak))
 #define noret                   __attribute__((noreturn))
 #define must_inline             __attribute__((always_inline))
 #define must_emit               __attribute__((used))
 #define unreachable             __builtin_unreachable()
 #define no_inline               __attribute__((noinline))
 
+#define _default                _weak
+
+#define msbiti                  (sizeof(int) * 8 - 1)
 #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)
+
+#ifdef CONFIG_ARCH_BITS_64
+#define msbitl                  (sizeof(long) * 8 - 1)
+#define clzl(bits)              __builtin_clzl(bits)
+#else
+#define msbitl                  msbiti
+#define clzl(bits)              clz(bits)
+#endif
+
+#define sadd_of(a, b, of)       __builtin_sadd_overflow(a, b, of)
+#define saddl_of(a, b, of)      __builtin_saddl_overflow(a, b, of)
+#define umul_of(a, b, of)       __builtin_umul_overflow(a, b, of)
+#define umull_of(a, b, of)      __builtin_umull_overflow(a, b, of)
 #define offsetof(f, m)          __builtin_offsetof(f, m)
 
 #define prefetch_rd(ptr, ll)    __builtin_prefetch((ptr), 0, ll)
@@ -28,8 +42,12 @@
 #define compact                 __attribute__((packed))
 #define align(v)                __attribute__((aligned (v)))
 
+#define cacheline_size          64
+#define cacheline_align         align(cacheline_size)
+
 #define export_symbol(domain, namespace, symbol)\
-    typeof(symbol)* must_emit __SYMEXPORT_Z##domain##_N##namespace##_S##symbol = &(symbol)
+    typeof(symbol)* must_emit __SYMEXPORT_Z##domain##_N##namespace##_S##symbol \
+         = &(symbol)
 
 inline static void noret
 spin()