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@@ -2127,6 +2127,23 @@ extern const char bb_default_login_shell[] ALIGN1;
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# define FB_0 "/dev/fb0"
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#endif
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+// storage helpers for mk*fs utilities
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+char BUG_wrong_field_size(void);
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+#define STORE_LE(field, value) \
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+do { \
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+ if (sizeof(field) == 4) \
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+ field = SWAP_LE32((uint32_t)(value)); \
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+ else if (sizeof(field) == 2) \
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+ field = SWAP_LE16((uint16_t)(value)); \
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+ else if (sizeof(field) == 1) \
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+ field = (uint8_t)(value); \
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+ else \
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+ BUG_wrong_field_size(); \
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+} while (0)
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+
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+#define FETCH_LE32(field) \
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+ (sizeof(field) == 4 ? SWAP_LE32(field) : BUG_wrong_field_size())
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+
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#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
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#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
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