endian.h stuff and type_traits is_trivial

bridgenet_clean.sh

@@ -1,7 +1,7 @@
 #! /usr/bin/env nix-shell
 #! nix-shell -i bash -p bash -p bridge-utils -p tunctl
 
-TAP_INTERFACE_VM=tap1
+TAP_INTERFACE_VM=tap0
 BRIDGE_INTERFACE=br0
 
 sudo brctl delif ${BRIDGE_INTERFACE} ${TAP_INTERFACE_VM}

kernel/include/vix/endian.h

@@ -3,19 +3,51 @@
 #include <vix/types.h>
 
 // clang-format off
+#define E_SWAP_16(x) ((x >> 8) | ((x & 0xFF) << 8))
+#define E_SWAP_32(x) ((x >> 24) | ((x & 0x00FF0000) >> 8) | ((x & 0x0000FF00) << 8) | (x << 24))
+#define E_SWAP_64(x) ((x >> 56) | ((x & 0x00FF000000000000) >> (5 * 8)) | ((x & 0x0000FF0000000000) >> (3 * 8)) | ((x & 0x000000FF00000000) >> 8) | ((x & 0x00000000FF000000) << 8) |((x & 0x0000000000FF0000) << (3 * 8)) | ((x & 0x000000000000FF00) << (5 * 8)) | (x << 56))
+// clang-format on
+
 #if (CONFIG_ENDIAN_BIG == 0)
-#define LE_16(x) ()
-#define LE_32(x) ()
-#define LE_64(x) ()
-#define BE_16(x) ((x >> 8) | ((x & 0xFF) << 8))
-#define BE_32(x) ((x >> 24) | ((x & 0x00FF0000) >> 8) | ((x & 0x0000FF00) << 8) | (x << 24))
-#define BE_64(x) ((x >> 56) | ((x & 0x00FF000000000000) >> (5 * 8)) | ((x & 0x0000FF0000000000) >> (3 * 8)) | ((x & 0x000000FF00000000) >> 8) | ((x & 0x00000000FF000000) << 8) |((x & 0x0000000000FF0000) << (3 * 8)) | ((x & 0x000000000000FF00) << (5 * 8)) | (x << 56))
+#define LE_16(x) (x)
+#define LE_32(x) (x)
+#define LE_64(x) (x)
+#define BE_16(x) E_SWAP_16(x)
+#define BE_32(x) E_SWAP_32(x)
+#define BE_64(x) E_SWAP_64(x)
 #else
-#define LE_16(x) ((x >> 8) | ((x & 0xFF) << 8))
-#define LE_32(x) ((x >> 24) | ((x & 0x00FF0000) >> 8) | ((x & 0x0000FF00) << 8) | (x << 24))
-#define LE_64(x) ((x >> 56) | ((x & 0x00FF000000000000) >> (5 * 8)) | ((x & 0x0000FF0000000000) >> (3 * 8)) | ((x & 0x000000FF00000000) >> 8) | ((x & 0x00000000FF000000) << 8) |((x & 0x0000000000FF0000) << (3 * 8)) | ((x & 0x000000000000FF00) << (5 * 8)) | (x << 56))
-#define BE_16(x) ()
-#define BE_32(x) ()
-#define BE_64(x) ()
+#define LE_16(x) E_SWAP_16(x)
+#define LE_32(x) E_SWAP_32(x)
+#define LE_64(x) E_SWAP_64(x)
+#define BE_16(x) (x)
+#define BE_32(x) (x)
+#define BE_64(x) (x)
+#endif
+
+#ifdef __cplusplus
+namespace endian {
+    constexpr uint16_t c_be_16(uint16_t x) {
+        return BE_16(x);
+    }
+
+    constexpr uint32_t c_be_32(uint32_t x) {
+        return BE_32(x);
+    }
+
+    constexpr uint64_t c_be_64(uint64_t x) {
+        return BE_64(x);
+    }
+
+    constexpr uint16_t c_le_16(uint16_t x) {
+        return LE_16(x);
+    }
+
+    constexpr uint32_t c_le_32(uint32_t x) {
+        return LE_32(x);
+    }
+
+    constexpr uint64_t c_le_64(uint64_t x) {
+        return LE_64(x);
+    }
+}
 #endif
-// clang-format on

kernel/stdlibs/libcxx/include/type_traits

@@ -0,0 +1,9 @@
+#pragma once
+
+namespace std {
+    template <class T> struct is_trivial {
+        static constexpr bool value = __is_trivial(T);
+    };
+
+    template <class T> constexpr bool is_trivial_v = is_trivial<T>::value;
+}