refactor: add a async read/write variant to device ops, with allow async io to be...

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

diff --git a/lunaix-os/includes/lunaix/spike.h b/lunaix-os/includes/lunaix/spike.h
index a2a0e21d5f66c1c56e33e2947306fb930d78ca2e..9e2d427e42bc59150faaa77359040ea34a32a7ef 100644 (file)
--- a/lunaix-os/includes/lunaix/spike.h
+++ b/lunaix-os/includes/lunaix/spike.h
@@ -22,6 +22,8 @@
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 

+#define is_pot(val) (((val) != 0) || ((val) & ((val)-1)) == 0)
+

 /**
  * @brief Fast log base 2 for integer, utilizing constant unfolding.
  * Adopted from
 /**
  * @brief Fast log base 2 for integer, utilizing constant unfolding.
  * Adopted from


@@ -62,16 +64,7 @@
                                 : ((x) & (1ul << 2))  ? 2                      \
                                 : ((x) & (1ul << 1))  ? 1                      \
                                                       : 0)                      \
                                 : ((x) & (1ul << 2))  ? 2                      \
                                 : ((x) & (1ul << 1))  ? 1                      \
                                                       : 0)                      \

-                             : (31 - __builtin_clz(x)))
-
-inline static void noret
-spin()
-{
-    volatile int __infloop = 1;
-    while (__infloop)
-        ;
-    __builtin_unreachable();
-}
+                             : (31 - clz(x)))

 
 #ifndef __LUNAIXOS_NASSERT__
 #define assert(cond)                                                           \
 
 #ifndef __LUNAIXOS_NASSERT__
 #define assert(cond)                                                           \


@@ -88,7 +81,7 @@ spin()
 
 void
 __assert_fail(const char* expr, const char* file, unsigned int line)
 
 void
 __assert_fail(const char* expr, const char* file, unsigned int line)

-  __attribute__((noinline, noreturn));
+    __attribute__((noinline, noreturn));

 #else
 #define assert(cond) (void)(cond);          // assert nothing
 #define assert_msg(cond, msg) (void)(cond); // assert nothing
 #else
 #define assert(cond) (void)(cond);          // assert nothing
 #define assert_msg(cond, msg) (void)(cond); // assert nothing