From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:00 -0500
Subject: lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/mlibc/options/glibc/include/endian.h | 54 ++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 lib/mlibc/options/glibc/include/endian.h

(limited to 'lib/mlibc/options/glibc/include/endian.h')

diff --git a/lib/mlibc/options/glibc/include/endian.h b/lib/mlibc/options/glibc/include/endian.h
new file mode 100644
index 0000000..00d5ee1
--- /dev/null
+++ b/lib/mlibc/options/glibc/include/endian.h
@@ -0,0 +1,54 @@
+#ifndef _ENDIAN_H
+#define _ENDIAN_H
+
+#include <byteswap.h>
+
+#ifdef __GNUC__
+# 	define BYTE_ORDER __BYTE_ORDER__
+#	define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+#	define BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#	define PDP_ENDIAN __ORDER_PDP_ENDIAN__
+
+# 	define __BYTE_ORDER __BYTE_ORDER__
+#ifndef __LITTLE_ENDIAN // Linux kernel headers define this already
+#	define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+#endif
+#	define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#	define __PDP_ENDIAN __ORDER_PDP_ENDIAN__
+#else
+#	error "Unsupported compiler"
+#endif
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+#	define htobe16(x) __bswap_16(x)
+#	define htole16(x) (uint16_t)(x)
+#	define be16toh(x) __bswap_16(x)
+#	define le16toh(x) (uint16_t)(x)
+
+#	define htobe32(x) __bswap_32(x)
+#	define htole32(x) (uint32_t)(x)
+#	define be32toh(x) __bswap_32(x)
+#	define le32toh(x) (uint32_t)(x)
+
+#	define htobe64(x) __bswap_64(x)
+#	define htole64(x) (uint64_t)(x)
+#	define be64toh(x) __bswap_64(x)
+#	define le64toh(x) (uint64_t)(x)
+#else
+#	define htobe16(x) (uint16_t)(x)
+#	define htole16(x) __bswap_16(x)
+#	define be16toh(x) (uint16_t)(x)
+#	define le16toh(x) __bswap_16(x)
+
+#	define htobe32(x) (uint32_t)(x)
+#	define htole32(x) __bswap_32(x)
+#	define be32toh(x) (uint32_t)(x)
+#	define le32toh(x) __bswap_32(x)
+
+#	define htobe64(x) (uint64_t)(x)
+#	define htole64(x) __bswap_64(x)
+#	define be64toh(x) (uint64_t)(x)
+#	define le64toh(x) __bswap_64(x)
+#endif
+
+#endif // _ENDIAN_H
-- 
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