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[/] [igor/] [trunk/] [avr/] [src/] [encdec.h] - Blame information for rev 4
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#ifndef _ENCDEC_H_
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#define _ENCDEC_H_
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#define swap32(x) \
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((((x) & 0xff000000) >> 24) | \
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(((x) & 0x00ff0000) >> 8) | \
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(((x) & 0x0000ff00) << 8) | \
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(((x) & 0x000000ff) << 24))
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uint32_t encode_object(uint32_t, uint32_t);
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uint32_t decode_object(uint32_t, uint32_t, uint8_t *);
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#define TYPE_NONE 0x0
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#define TYPE_INT 0x1
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#define TYPE_FLOAT 0x3
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#define TYPE_CONS 0x4
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#define TYPE_SNOC 0x5
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#define TYPE_PTR 0x6
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#define TYPE_ARRAY 0x7
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#define TYPE_NIL 0x8
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#define TYPE_T 0x9
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#define TYPE_CHAR 0xA
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#define TYPE_SYMBOL 0xB
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#define TYPE_FUNCTION 0xC
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#define TYPE_BUILTIN 0xD
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#define SIZE_INT 26
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#define BSIZE_INT (SIZE_INT + 2)
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#define SIZE_CHAR 8
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#define BSIZE_CHAR (SIZE_CHAR + 2)
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// size and position of the parts of an object
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#define OBJECT_DATUM_OFFSET 0
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#define OBJECT_DATUM_MASK 0x3FFFFFF
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#define OBJECT_TYPE_OFFSET 27
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#define OBJECT_TYPE_MASK 0x1F
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#define OBJECT_GC_OFFSET 26
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#define OBJECT_GC_MASK 0x1
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#define OBJECT_NEW(type, datum) \
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((((uint32_t)(type)&OBJECT_TYPE_MASK) << OBJECT_TYPE_OFFSET) | \
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((datum)&OBJECT_DATUM_MASK))
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#define OBJECT_TYPE(obj) \
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(((uint32_t)(obj)>>OBJECT_TYPE_OFFSET) & OBJECT_TYPE_MASK)
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#define OBJECT_DATUM(obj) ((obj) & OBJECT_DATUM_MASK)
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#define OBJECT_GC(obj) (((obj)>>OBJECT_GC_OFFSET)&OBJECT_GC_MASK)
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#define DATA_SIZE_TYPE(type) ((type) == TYPE_CHAR) ? 1 : 4
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// XXX: Change to DEVTYPE_BOOT || == DEVTYPE_STORAGE when we're ready
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#define DATA_TYPE_DEV(dev) \
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(((dev) == DEVTYPE_BOOT) ? TYPE_NONE : TYPE_CHAR)
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#endif /* _ENCDEC_H_ */
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