1 files changed, 78 insertions, 0 deletions
diff --git a/payloads/libpayload/include/endian.h b/payloads/libpayload/include/endian.h
new file mode 100644
index 0000000000..cd805e0f4e
--- /dev/null
+++ b/payloads/libpayload/include/endian.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but without any warranty; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _ENDIAN_H_
+#define _ENDIAN_H_
+
+#include <arch/types.h>
+#include <libpayload-config.h>
+
+#define swap_bytes16(in) (((in & 0xFF) << 8) | ((in & 0xFF00) >> 8))
+#define swap_bytes32(in) (((in & 0xFF) << 24) | ((in & 0xFF00) << 8) | \
+			  ((in & 0xFF0000) >> 8) | ((in & 0xFF000000) >> 24))
+#define swap_bytes64(in) (((uint64_t)swap_bytes32((uint32_t)(in)) << 32) | \
+			  ((uint64_t)swap_bytes32((uint32_t)((in) >> 32))))
+
+
+#if defined CONFIG_BIG_ENDIAN
+
+#define htobew(in) (in)
+#define htobel(in) (in)
+#define htobell(in) (in)
+
+#define htolew(in) swap_bytes16(in)
+#define htolel(in) swap_bytes32(in)
+#define htolell(in) swap_bytes64(in)
+
+#elif defined CONFIG_LITTLE_ENDIAN
+
+#define htobew(in) swap_bytes16(in)
+#define htobel(in) swap_bytes32(in)
+#define htobell(in) swap_bytes64(in)
+
+#define htolew(in) (in)
+#define htolel(in) (in)
+#define htolell(in) (in)
+
+#else
+
+#error Cant tell if the CPU is little or big endian.
+
+#endif
+
+#define betohw(in) htobew(in)
+#define betohl(in) htobel(in)
+#define betohll(in) htobell(in)
+
+#define letohw(in) htolew(in)
+#define letohl(in) htolel(in)
+#define letohll(in) htolell(in)
+
+#define htonw(in) htobew(in)
+#define htonl(in) htobel(in)
+#define htonll(in) htobell(in)
+
+#define ntohw(in) htonw(in)
+#define ntohl(in) htonl(in)
+#define ntohll(in) htonll(in)
+
+#endif