36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
Bytecode format
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---------------
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The bytecode file is composed of the following sections:
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* HEADER: 16-byte header
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[0:3]: Magic
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[4]: VM format
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[rest]: Reserved for future use
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* TABLE_OF_CONTENTS: list of 8 records pointing to each one of the sections
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Each record (6 bytes):
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- Pointer to section: 4 bytes
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- Number of records in section: 2 bytes
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* [0x0] Constants indexes: pointers to each of the constant locations
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* Table of 4-byte constant indexes with pointer to constant
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(counter start at beginning of raw constants)
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* [0x1] Functions indexes: Pointer to functions within the code
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[0:3]: function pointer (counter start at the beginning of executable code)
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[4:5]: number of parameters
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[6:7]: number of local variables
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[8:b]: function size
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* [0x2] Constants raw data
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* [0x3] Code: executable code
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* [0x4] Debugging info
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???
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The max file size is 2 Gb.
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## Values can be encoded in the following ways:
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* The type is defined by the operator.
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* Encoding varies according to the type:
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int: use protobuf format
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float: 4-bit floating point
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string: int-defined length, followed by the string proper - no null terminator
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* Constant indexes and function ids are encoded as ints
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