333 lines
16 KiB
Python
Executable File
333 lines
16 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-FileCopyrightText: 2014 MicroPython & CircuitPython contributors (https://github.com/adafruit/circuitpython/graphs/contributors)
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#
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# SPDX-License-Identifier: MIT
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import sys
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import binascii
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import io
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bytecode_format_sizes = {
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"MP_OPCODE_BYTE": 1,
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"MP_OPCODE_QSTR": 3,
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"MP_OPCODE_VAR_UINT": None, # Unknown because uint encoding uses the top bit to indicate the end.
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"MP_OPCODE_OFFSET": 3,
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"MP_OPCODE_BYTE_EXTRA": 2,
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"MP_OPCODE_VAR_UINT_EXTRA": None,
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"MP_OPCODE_OFFSET_EXTRA": 4,
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}
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bytecodes = {
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0x00: {"name": "MP_BC_LOAD_FAST_MULTI", "format": "MP_OPCODE_BYTE"},
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0x10: {"name": "MP_BC_LOAD_CONST_FALSE", "format": "MP_OPCODE_BYTE"},
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0x11: {"name": "MP_BC_LOAD_CONST_NONE", "format": "MP_OPCODE_BYTE"},
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0x12: {"name": "MP_BC_LOAD_CONST_TRUE", "format": "MP_OPCODE_BYTE"},
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0x14: {"name": "MP_BC_LOAD_CONST_SMALL_INT", "format": "MP_OPCODE_VAR_UINT"},
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0x16: {"name": "MP_BC_LOAD_CONST_STRING", "format": "MP_OPCODE_QSTR"},
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0x17: {"name": "MP_BC_LOAD_CONST_OBJ", "format": "MP_OPCODE_VAR_UINT"},
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# define MP_BC_LOAD_CONST_OBJ (0x17) // ptr
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0x18: {"name": "MP_BC_LOAD_NULL", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_LOAD_FAST_N (0x19) // uint
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0x1A: {"name": "MP_BC_LOAD_DEREF", "format": "MP_OPCODE_VAR_UINT"},
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0x1B: {"name": "MP_BC_LOAD_NAME", "format": "MP_OPCODE_QSTR"},
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0x1C: {"name": "MP_BC_LOAD_GLOBAL", "format": "MP_OPCODE_QSTR"},
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0x1D: {"name": "MP_BC_LOAD_ATTR", "format": "MP_OPCODE_QSTR"},
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0x1E: {"name": "MP_BC_LOAD_METHOD", "format": "MP_OPCODE_QSTR"},
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0x1F: {"name": "MP_BC_LOAD_SUPER_METHOD", "format": "MP_OPCODE_QSTR"},
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0x20: {"name": "MP_BC_LOAD_BUILD_CLASS", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_LOAD_BUILD_CLASS (0x20)
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# define MP_BC_LOAD_SUBSCR (0x21)
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0x21: {"name": "MP_BC_LOAD_SUBSCR", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_STORE_FAST_N (0x22) // uint
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# define MP_BC_STORE_DEREF (0x23) // uint
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# define MP_BC_STORE_NAME (0x24) // qstr
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0x24: {"name": "MP_BC_STORE_NAME", "format": "MP_OPCODE_QSTR"},
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0x25: {"name": "MP_BC_STORE_GLOBAL", "format": "MP_OPCODE_QSTR"},
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0x26: {"name": "MP_BC_STORE_ATTR", "format": "MP_OPCODE_QSTR"},
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0x27: {"name": "MP_BC_LOAD_SUBSCR", "format": "MP_OPCODE_BYTE"},
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0x28: {"name": "MP_BC_DELETE_FAST", "format": "MP_OPCODE_VAR_UINT"},
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# define MP_BC_DELETE_FAST (0x28) // uint
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# define MP_BC_DELETE_DEREF (0x29) // uint
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# define MP_BC_DELETE_NAME (0x2a) // qstr
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# define MP_BC_DELETE_GLOBAL (0x2b) // qstr
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0x30: {"name": "MP_BC_DUP_TOP", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_DUP_TOP_TWO (0x31)
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0x32: {"name": "MP_BC_POP_TOP", "format": "MP_OPCODE_BYTE"},
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0x33: {"name": "MP_BC_ROT_TWO", "format": "MP_OPCODE_BYTE"},
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0x34: {"name": "MP_BC_ROT_THREE", "format": "MP_OPCODE_BYTE"},
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0x35: {"name": "MP_BC_JUMP", "format": "MP_OPCODE_OFFSET"},
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0x36: {"name": "MP_BC_POP_JUMP_IF_TRUE", "format": "MP_OPCODE_OFFSET"},
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0x37: {"name": "MP_BC_POP_JUMP_IF_FALSE", "format": "MP_OPCODE_OFFSET"},
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# define MP_BC_JUMP_IF_TRUE_OR_POP (0x38) // rel byte code offset, 16-bit signed, in excess
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# define MP_BC_JUMP_IF_FALSE_OR_POP (0x39) // rel byte code offset, 16-bit signed, in excess
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# define MP_BC_SETUP_WITH (0x3d) // rel byte code offset, 16-bit unsigned
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# define MP_BC_WITH_CLEANUP (0x3e)
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# define MP_BC_SETUP_EXCEPT (0x3f) // rel byte code offset, 16-bit unsigned
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# define MP_BC_SETUP_FINALLY (0x40) // rel byte code offset, 16-bit unsigned
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# define MP_BC_END_FINALLY (0x41)
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# define MP_BC_GET_ITER (0x42)
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# define MP_BC_FOR_ITER (0x43) // rel byte code offset, 16-bit unsigned
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0x43: {"name": "MP_BC_FOR_ITER", "format": "MP_OPCODE_OFFSET"},
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0x44: {"name": "MP_BC_POP_BLOCK", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_POP_EXCEPT (0x45)
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# define MP_BC_UNWIND_JUMP (0x46) // rel byte code offset, 16-bit signed, in excess; then a byte
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0x47: {"name": "MP_BC_GET_ITER_STACK", "format": "MP_OPCODE_BYTE"},
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0x50: {"name": "MP_BC_BUILD_TUPLE", "format": "MP_OPCODE_VAR_UINT"},
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0x51: {"name": "MP_BC_BUILD_LIST", "format": "MP_OPCODE_VAR_UINT"},
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0x53: {"name": "MP_BC_BUILD_MAP", "format": "MP_OPCODE_VAR_UINT"},
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0x54: {"name": "MP_BC_STORE_MAP", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_BUILD_SET (0x56) // uint
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# define MP_BC_BUILD_SLICE (0x58) // uint
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# define MP_BC_STORE_COMP (0x57) // uint
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0x57: {"name": "MP_BC_STORE_COMP", "format": "MP_OPCODE_VAR_UINT"},
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# define MP_BC_UNPACK_SEQUENCE (0x59) // uint
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# define MP_BC_UNPACK_EX (0x5a) // uint
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0x5B: {"name": "MP_BC_RETURN_VALUE", "format": "MP_OPCODE_BYTE"},
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0x5C: {"name": "MP_BC_RAISE_VARARGS", "format": "MP_OPCODE_BYTE_EXTRA"},
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# define MP_BC_YIELD_VALUE (0x5d)
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# define MP_BC_YIELD_FROM (0x5e)
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# define MP_BC_MAKE_FUNCTION (0x60) // uint
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0x60: {"name": "MP_BC_MAKE_FUNCTION", "format": "MP_OPCODE_VAR_UINT"},
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0x61: {"name": "MP_BC_MAKE_FUNCTION_DEFARGS", "format": "MP_OPCODE_VAR_UINT"},
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0x62: {"name": "MP_BC_MAKE_CLOSURE", "format": "MP_OPCODE_VAR_UINT_EXTRA"},
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0x63: {"name": "MP_BC_MAKE_CLOSURE", "format": "MP_OPCODE_VAR_UINT_EXTRA"},
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0x64: {"name": "MP_BC_CALL_FUNCTION", "format": "MP_OPCODE_VAR_UINT"},
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0x65: {"name": "MP_BC_CALL_FUNCTION_VAR_KW", "format": "MP_OPCODE_VAR_UINT"},
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0x66: {"name": "MP_BC_CALL_METHOD", "format": "MP_OPCODE_VAR_UINT"},
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0x67: {"name": "MP_BC_CALL_METHOD_VAR_KW", "format": "MP_OPCODE_VAR_UINT"},
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0x68: {"name": "MP_BC_IMPORT_NAME", "format": "MP_OPCODE_QSTR"},
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0x69: {"name": "MP_BC_IMPORT_FROM", "format": "MP_OPCODE_QSTR"},
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# define MP_BC_IMPORT_FROM (0x69) // qstr
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# define MP_BC_IMPORT_STAR (0x6a)
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# define MP_BC_LOAD_CONST_SMALL_INT_MULTI (0x70) // + N(64)
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0x7F: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI -1", "format": "MP_OPCODE_BYTE"},
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0x80: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI 0", "format": "MP_OPCODE_BYTE"},
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0x81: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI 1", "format": "MP_OPCODE_BYTE"},
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0x82: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI 2", "format": "MP_OPCODE_BYTE"},
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0x83: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI 3", "format": "MP_OPCODE_BYTE"},
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0x84: {"name": "MP_BC_LOAD_CONST_SMALL_INT_MULTI 4", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_LOAD_FAST_MULTI (0xb0) // + N(16)
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0xB0: {"name": "MP_BC_LOAD_FAST_MULTI 0", "format": "MP_OPCODE_BYTE"},
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0xB1: {"name": "MP_BC_LOAD_FAST_MULTI 1", "format": "MP_OPCODE_BYTE"},
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0xB2: {"name": "MP_BC_LOAD_FAST_MULTI 2", "format": "MP_OPCODE_BYTE"},
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0xB3: {"name": "MP_BC_LOAD_FAST_MULTI 3", "format": "MP_OPCODE_BYTE"},
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0xB4: {"name": "MP_BC_LOAD_FAST_MULTI 4", "format": "MP_OPCODE_BYTE"},
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0xB5: {"name": "MP_BC_LOAD_FAST_MULTI 5", "format": "MP_OPCODE_BYTE"},
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0xB6: {"name": "MP_BC_LOAD_FAST_MULTI 6", "format": "MP_OPCODE_BYTE"},
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0xB7: {"name": "MP_BC_LOAD_FAST_MULTI 7", "format": "MP_OPCODE_BYTE"},
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0xB8: {"name": "MP_BC_LOAD_FAST_MULTI 8", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_STORE_FAST_MULTI (0xc0) // + N(16)
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0xC0: {"name": "MP_BC_STORE_FAST_MULTI 0", "format": "MP_OPCODE_BYTE"},
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0xC1: {"name": "MP_BC_STORE_FAST_MULTI 1", "format": "MP_OPCODE_BYTE"},
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0xC2: {"name": "MP_BC_STORE_FAST_MULTI 2", "format": "MP_OPCODE_BYTE"},
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0xC3: {"name": "MP_BC_STORE_FAST_MULTI 3", "format": "MP_OPCODE_BYTE"},
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0xC4: {"name": "MP_BC_STORE_FAST_MULTI 4", "format": "MP_OPCODE_BYTE"},
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0xC5: {"name": "MP_BC_STORE_FAST_MULTI 5", "format": "MP_OPCODE_BYTE"},
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0xC6: {"name": "MP_BC_STORE_FAST_MULTI 6", "format": "MP_OPCODE_BYTE"},
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0xC7: {"name": "MP_BC_STORE_FAST_MULTI 7", "format": "MP_OPCODE_BYTE"},
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# define MP_BC_UNARY_OP_MULTI (0xd0) // + op(<MP_UNARY_OP_NUM_BYTECODE)
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# // 9 relational operations, should return a bool
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0xD7: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_LESS", "format": "MP_OPCODE_BYTE"},
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0xD8: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_MORE", "format": "MP_OPCODE_BYTE"},
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0xD9: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_EQUAL", "format": "MP_OPCODE_BYTE"},
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0xDA: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_LESS_EQUAL", "format": "MP_OPCODE_BYTE"},
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0xDB: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_MORE_EQUAL", "format": "MP_OPCODE_BYTE"},
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0xDC: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_NOT_EQUAL", "format": "MP_OPCODE_BYTE"},
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# dc: MP_BINARY_OP_NOT_EQUAL,
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# dd: MP_BINARY_OP_IN,
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# de: MP_BINARY_OP_IS,
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# df: MP_BINARY_OP_EXCEPTION_MATCH,
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#
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# // 12 inplace arithmetic operations
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# e0: MP_BINARY_OP_INPLACE_OR,
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# e1: MP_BINARY_OP_INPLACE_XOR,
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# e2: MP_BINARY_OP_INPLACE_AND,
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# e3: MP_BINARY_OP_INPLACE_LSHIFT,
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# e4: MP_BINARY_OP_INPLACE_RSHIFT,
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# e5: MP_BINARY_OP_INPLACE_ADD,
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0xE5: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_INPLACE_ADD", "format": "MP_OPCODE_BYTE"},
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0xE6: {
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"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_INPLACE_SUBTRACT",
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"format": "MP_OPCODE_BYTE",
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},
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# e7: MP_BINARY_OP_INPLACE_MULTIPLY,
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# e8: MP_BINARY_OP_INPLACE_FLOOR_DIVIDE,
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# e9: MP_BINARY_OP_INPLACE_TRUE_DIVIDE,
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# ea: MP_BINARY_OP_INPLACE_MODULO,
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# eb: MP_BINARY_OP_INPLACE_POWER,
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#
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# // 12 normal arithmetic operations
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# ec: MP_BINARY_OP_OR,
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# ed: MP_BINARY_OP_XOR,
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# ee: MP_BINARY_OP_AND,
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# ef: MP_BINARY_OP_LSHIFT,
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# f0: MP_BINARY_OP_RSHIFT,
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# define MP_BC_BINARY_OP_MULTI (0xd7) // + op(<MP_BINARY_OP_NUM_BYTECODE)
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0xF1: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_ADD", "format": "MP_OPCODE_BYTE"},
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0xF2: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_SUBTRACT", "format": "MP_OPCODE_BYTE"},
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0xF3: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_MULTIPLY", "format": "MP_OPCODE_BYTE"},
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0xF4: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_FLOOR_DIVIDE", "format": "MP_OPCODE_BYTE"},
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0xF5: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_TRUE_DIVIDE", "format": "MP_OPCODE_BYTE"},
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0xF6: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_MODULO", "format": "MP_OPCODE_BYTE"},
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0xF7: {"name": "MP_BC_BINARY_OP_MULTI MP_BINARY_OP_POWER", "format": "MP_OPCODE_BYTE"},
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}
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def read_uint(encoded_uint, peek=False):
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unum = 0
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i = 0
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while True:
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if peek:
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b = encoded_uint.peek()[i]
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else:
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b = encoded_uint.read(1)[0]
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unum = (unum << 7) | (b & 0x7F)
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if (b & 0x80) == 0:
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break
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i += 1
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return unum
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class Prelude:
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def __init__(self, encoded_prelude):
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self.n_state = read_uint(encoded_prelude)
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self.n_exc_stack = read_uint(encoded_prelude)
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self.scope_flags = encoded_prelude.read(1)[0]
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self.n_pos_args = encoded_prelude.read(1)[0]
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self.n_kwonly_args = encoded_prelude.read(1)[0]
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self.n_def_pos_args = encoded_prelude.read(1)[0]
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self.code_info_size = read_uint(encoded_prelude, peek=True)
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class RawCode:
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# mp_raw_code_kind_t kind : 3;
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# mp_uint_t scope_flags : 7;
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# mp_uint_t n_pos_args : 11;
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# union {
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# struct {
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# const byte *bytecode;
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# const mp_uint_t *const_table;
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# #if MICROPY_PERSISTENT_CODE_SAVE
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# mp_uint_t bc_len;
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# uint16_t n_obj;
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# uint16_t n_raw_code;
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# #endif
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# } u_byte;
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# struct {
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# void *fun_data;
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# const mp_uint_t *const_table;
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# mp_uint_t type_sig; // for viper, compressed as 2-bit types; ret is MSB, then arg0, arg1, etc
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# } u_native;
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# } data;
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def __init__(self, encoded_raw_code):
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bc_len = read_uint(encoded_raw_code)
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bc = encoded_raw_code.read(bc_len)
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bc = io.BufferedReader(io.BytesIO(bc))
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prelude = Prelude(bc)
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encoded_code_info = bc.read(prelude.code_info_size)
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bc.read(1)
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while bc.peek(1)[0] == 0xFF:
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bc.read(1)
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bc = bytearray(bc.read())
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# print(encoded_code_info, bc)
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self.qstrs = []
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self.simple_name = self._load_qstr(encoded_raw_code)
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self.source_file = self._load_qstr(encoded_raw_code)
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# the simple name and source file qstr indexes get written back into the byte code somehow
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# print(bc)
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self._load_bytecode_qstrs(encoded_raw_code, bc)
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# print(encoded_raw_code.peek(20)[:20])
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n_obj = read_uint(encoded_raw_code)
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n_raw_code = read_uint(encoded_raw_code)
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self.const_table = []
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for i in range(prelude.n_pos_args + prelude.n_kwonly_args):
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self.const_table.append(self._load_qstr(encoded_raw_code))
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print("load args", self.const_table[-1])
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for i in range(n_obj):
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self.const_table.append(self._load_obj(encoded_raw_code))
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print("load obj", self.const_table[-1])
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for i in range(n_raw_code):
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print("load raw code")
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self.const_table.append(RawCode(encoded_raw_code))
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print(self.qstrs[self.simple_name], self.qstrs[self.source_file])
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# print(binascii.hexlify(encoded_raw_code.peek(20)[:20]))
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def _load_qstr(self, encoded_qstr):
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string_len = read_uint(encoded_qstr)
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string = encoded_qstr.read(string_len).decode("utf-8")
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print(string)
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if string in self.qstrs:
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return self.qstrs.index(string)
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new_index = len(self.qstrs)
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self.qstrs.append(string)
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return new_index
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def _load_obj(self, encoded_obj):
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obj_type = encoded_obj.read(1)
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if obj_type == b"e":
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return "..."
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else:
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str_len = read_uint(encoded_obj)
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s = encoded_obj.read(str_len)
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if obj_type == b"s":
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return s.decode("utf-8")
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elif obj_type == b"b":
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return s
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elif obj_type == b"i":
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return int(s)
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elif obj_type == b"f":
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return float(s)
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elif obj_type == b"c":
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return float(s)
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raise RuntimeError("Unknown object type {}".format(obj_type))
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def _load_bytecode_qstrs(self, encoded_raw_code, bytecode):
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i = 0
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while i < len(bytecode):
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bc = bytecode[i]
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if bc not in bytecodes:
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raise RuntimeError("missing code 0x{:x} at {}".format(bc, i))
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return
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bc = bytecodes[bc]
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opcode = bc["name"]
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print(opcode)
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opcode_size = bytecode_format_sizes[bc["format"]]
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if bc["format"] == "MP_OPCODE_QSTR":
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qstr_index = self._load_qstr(encoded_raw_code)
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bytecode[i + 1] = qstr_index
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bytecode[i + 2] = qstr_index >> 8
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if not opcode_size:
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i += 2
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while (bytecode[i] & 0x80) != 0:
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i += 1
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if bc["format"] == "MP_OPCODE_VAR_UINT_EXTRA":
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i += 1
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else:
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i += opcode_size
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class mpyFile:
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def __init__(self, encoded_mpy):
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# this matches mp-raw_code_save in py/persistentcode.c
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first_byte = encoded_mpy.read(1)
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if first_byte != b"M":
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raise ValueError("Not a valid first byte. Should be 'M' but is {}".format(first_byte))
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self.version = encoded_mpy.read(1)[0]
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self.feature_flags = encoded_mpy.read(1)[0]
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self.small_int_bits = encoded_mpy.read(1)[0]
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self.raw_code = RawCode(encoded_mpy)
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if __name__ == "__main__":
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with open(sys.argv[1], "rb") as f:
|
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mpy = mpyFile(f)
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print(mpy.version)
|
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print(mpy.feature_flags)
|
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print(mpy.small_int_bits)
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