mirror of https://github.com/OpenIPC/firmware.git
59 lines
1.7 KiB
Diff
59 lines
1.7 KiB
Diff
--- linux-4.9.37/fs/yaffs2/yaffs_endian.h 1970-01-01 03:00:00.000000000 +0300
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+++ linux-4.9.y/fs/yaffs2/yaffs_endian.h 2021-06-07 13:01:34.000000000 +0300
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@@ -0,0 +1,55 @@
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+/*
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+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
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+ *
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+ * Copyright (C) 2002-2011 Aleph One Ltd.
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+ * for Toby Churchill Ltd and Brightstar Engineering
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+ *
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+ * Created by Charles Manning <charles@aleph1.co.uk>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU Lesser General Public License version 2.1 as
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+ * published by the Free Software Foundation.
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+ *
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+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
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+ */
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+
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+#ifndef __YAFFS_ENDIAN_H__
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+#define __YAFFS_ENDIAN_H__
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+#include "yaffs_guts.h"
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+#include "yaffs_packedtags2.h"
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+
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+static inline u32 swap_u32(u32 val)
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+{
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+ return ((val >>24) & 0x000000ff) |
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+ ((val >> 8) & 0x0000ff00) |
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+ ((val << 8) & 0x00ff0000) |
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+ ((val <<24) & 0xff000000);
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+}
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+
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+#define swap_s32(val) \
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+ (s32)(swap_u32((u32)(val)))
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+
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+static inline loff_t swap_loff_t(loff_t lval)
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+{
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+ u32 vall = swap_u32(FSIZE_LOW(lval));
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+ u32 valh;
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+
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+ if (sizeof(loff_t) == sizeof(u32))
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+ return (loff_t) vall;
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+
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+ valh = swap_u32(FSIZE_HIGH(lval));
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+
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+ return FSIZE_COMBINE(vall, valh); /*NB: h and l are swapped. */
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+}
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+
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+
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+
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+struct yaffs_dev;
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+void yaffs_do_endian_s32(struct yaffs_dev *dev, s32 *val);
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+void yaffs_do_endian_u32(struct yaffs_dev *dev, u32 *val);
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+void yaffs_do_endian_oh(struct yaffs_dev *dev, struct yaffs_obj_hdr *oh);
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+void yaffs_do_endian_packed_tags2(struct yaffs_dev *dev,
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+ struct yaffs_packed_tags2_tags_only *ptt);
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+void yaffs_endian_config(struct yaffs_dev *dev);
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+
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+#endif
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