refactor: elf parsing utility and exec related

[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 298593d5d3015e540f43650fb1ebabe5a948538b..5ea8d47b2b759068d41895ad1a622c7d9ce2fee7 100644 (file)
--- a/lunaix-os/includes/lunaix/spike.h
+++ b/lunaix-os/includes/lunaix/spike.h
@@ -1,7 +1,7 @@
 #ifndef __LUNAIX_SPIKE_H
 #define __LUNAIX_SPIKE_H
 
-// Some helper functions. As helpful as Spike the Dragon! :)
+/** Some helper functions. As helpful as Spike the Dragon! :) **/
 
 // 除法 v/(2^k) 向上取整
 #define CEIL(v, k) (((v) + (1 << (k)) - 1) >> (k))
@@ -11,7 +11,7 @@
 // 除法 v/(2^k) 向下取整
 #define FLOOR(v, k) ((v) >> (k))
 
-// 获取v最近的最大k倍数
+// 获取v最近的最大k倍数 (k=2^n)
 #define ROUNDUP(v, k) (((v) + (k)-1) & ~((k)-1))
 
 // 获取v最近的最小k倍数 (k=2^m)
@@ -20,6 +20,8 @@
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
+#define likely(x) __builtin_expect((x), 1)
+
 /**
  * @brief Fast log base 2 for integer, utilizing constant unfolding.
  * Adopted from
@@ -27,40 +29,40 @@
  *
  */
 #define ILOG2(x)                                                               \
-    __builtin_constant_p(x) ? ((x) == 0              ? 0                       \
-                               : ((x) & (1ul << 31)) ? 31                      \
-                               : ((x) & (1ul << 30)) ? 30                      \
-                               : ((x) & (1ul << 29)) ? 29                      \
-                               : ((x) & (1ul << 28)) ? 28                      \
-                               : ((x) & (1ul << 27)) ? 27                      \
-                               : ((x) & (1ul << 26)) ? 26                      \
-                               : ((x) & (1ul << 25)) ? 25                      \
-                               : ((x) & (1ul << 24)) ? 24                      \
-                               : ((x) & (1ul << 23)) ? 23                      \
-                               : ((x) & (1ul << 22)) ? 22                      \
-                               : ((x) & (1ul << 21)) ? 21                      \
-                               : ((x) & (1ul << 20)) ? 20                      \
-                               : ((x) & (1ul << 19)) ? 19                      \
-                               : ((x) & (1ul << 18)) ? 18                      \
-                               : ((x) & (1ul << 17)) ? 17                      \
-                               : ((x) & (1ul << 16)) ? 16                      \
-                               : ((x) & (1ul << 15)) ? 15                      \
-                               : ((x) & (1ul << 14)) ? 14                      \
-                               : ((x) & (1ul << 13)) ? 13                      \
-                               : ((x) & (1ul << 12)) ? 12                      \
-                               : ((x) & (1ul << 11)) ? 11                      \
-                               : ((x) & (1ul << 10)) ? 10                      \
-                               : ((x) & (1ul << 9))  ? 9                       \
-                               : ((x) & (1ul << 8))  ? 8                       \
-                               : ((x) & (1ul << 7))  ? 7                       \
-                               : ((x) & (1ul << 6))  ? 6                       \
-                               : ((x) & (1ul << 5))  ? 5                       \
-                               : ((x) & (1ul << 4))  ? 4                       \
-                               : ((x) & (1ul << 3))  ? 3                       \
-                               : ((x) & (1ul << 2))  ? 2                       \
-                               : ((x) & (1ul << 1))  ? 1                       \
-                                                     : 0)                       \
-                            : (31 - __builtin_clz(x))
+    (__builtin_constant_p(x) ? ((x) == 0              ? 0                      \
+                                : ((x) & (1ul << 31)) ? 31                     \
+                                : ((x) & (1ul << 30)) ? 30                     \
+                                : ((x) & (1ul << 29)) ? 29                     \
+                                : ((x) & (1ul << 28)) ? 28                     \
+                                : ((x) & (1ul << 27)) ? 27                     \
+                                : ((x) & (1ul << 26)) ? 26                     \
+                                : ((x) & (1ul << 25)) ? 25                     \
+                                : ((x) & (1ul << 24)) ? 24                     \
+                                : ((x) & (1ul << 23)) ? 23                     \
+                                : ((x) & (1ul << 22)) ? 22                     \
+                                : ((x) & (1ul << 21)) ? 21                     \
+                                : ((x) & (1ul << 20)) ? 20                     \
+                                : ((x) & (1ul << 19)) ? 19                     \
+                                : ((x) & (1ul << 18)) ? 18                     \
+                                : ((x) & (1ul << 17)) ? 17                     \
+                                : ((x) & (1ul << 16)) ? 16                     \
+                                : ((x) & (1ul << 15)) ? 15                     \
+                                : ((x) & (1ul << 14)) ? 14                     \
+                                : ((x) & (1ul << 13)) ? 13                     \
+                                : ((x) & (1ul << 12)) ? 12                     \
+                                : ((x) & (1ul << 11)) ? 11                     \
+                                : ((x) & (1ul << 10)) ? 10                     \
+                                : ((x) & (1ul << 9))  ? 9                      \
+                                : ((x) & (1ul << 8))  ? 8                      \
+                                : ((x) & (1ul << 7))  ? 7                      \
+                                : ((x) & (1ul << 6))  ? 6                      \
+                                : ((x) & (1ul << 5))  ? 5                      \
+                                : ((x) & (1ul << 4))  ? 4                      \
+                                : ((x) & (1ul << 3))  ? 3                      \
+                                : ((x) & (1ul << 2))  ? 2                      \
+                                : ((x) & (1ul << 1))  ? 1                      \
+                                                      : 0)                      \
+                             : (31 - __builtin_clz(x)))
 
 #define __USER__ __attribute__((section(".usrtext")))
 
@@ -81,6 +83,9 @@ spin()
     if (!(cond)) {                                                             \
         __assert_fail(msg, __FILE__, __LINE__);                                \
     }
+
+#define fail(msg) __assert_fail(msg, __FILE__, __LINE__);
+
 void
 __assert_fail(const char* expr, const char* file, unsigned int line)
   __attribute__((noinline, noreturn));
@@ -88,7 +93,7 @@ __assert_fail(const char* expr, const char* file, unsigned int line)
 #define assert(cond) (void)(cond);          // assert nothing
 #define assert_msg(cond, msg) (void)(cond); // assert nothing
 
-#endif // __LUNAIXOS_NASSERT__
+#endif                                      // __LUNAIXOS_NASSERT__
 
 void
 panick(const char* msg);