From faff1361c36bcb93156468c497d1b5c21a340071 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=98rjan=20Malde?= <red@foxi.me>
Date: Sat, 16 Nov 2019 15:38:56 +0100
Subject: [PATCH] LibC: properly populate endian.h

---
 Libraries/LibC/endian.h | 45 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 42 insertions(+), 3 deletions(-)

diff --git a/Libraries/LibC/endian.h b/Libraries/LibC/endian.h
index 7bc4e074085..0b71a6af402 100644
--- a/Libraries/LibC/endian.h
+++ b/Libraries/LibC/endian.h
@@ -4,8 +4,47 @@
 
 __BEGIN_DECLS
 
-#define LITTLE_ENDIAN 1234
-#define BIG_ENDIAN 4321
-#define BYTE_ORDER LITTLE_ENDIAN
+#define __LITTLE_ENDIAN	1234
+#define __BIG_ENDIAN	4321
+#define __PDP_ENDIAN	3412
+
+#if defined(__GNUC__) && defined(__BYTE_ORDER__)
+#define __BYTE_ORDER	__BYTE_ORDER__
+#else
+#include <bits/endian.h>
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#include <stdint.h>
+
+#define LITTLE_ENDIAN	__LITTLE_ENDIAN
+#define BIG_ENDIAN	__BIG_ENDIAN
+#define PDP_ENDIAN	__PDP_ENDIAN
+#define BYTE_ORDER	__BYTE_ORDER
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define htole16(x) (uint16_t)(x)
+#define le16toh(x) (uint16_t)(x)
+#define letoh16(x) (uint16_t)(x)
+#define htole32(x) (uint32_t)(x)
+#define le32toh(x) (uint32_t)(x)
+#define letoh32(x) (uint32_t)(x)
+#define htole64(x) (uint64_t)(x)
+#define le64toh(x) (uint64_t)(x)
+#define letoh64(x) (uint64_t)(x)
+#else
+#define htobe16(x) (uint16_t)(x)
+#define be16toh(x) (uint16_t)(x)
+#define betoh16(x) (uint16_t)(x)
+#define htobe32(x) (uint32_t)(x)
+#define be32toh(x) (uint32_t)(x)
+#define betoh32(x) (uint32_t)(x)
+#define htobe64(x) (uint64_t)(x)
+#define be64toh(x) (uint64_t)(x)
+#define betoh64(x) (uint64_t)(x)
+#endif
+
+#endif
 
 __END_DECLS