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opcode.py
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""" opcode module - potentially shared between dis and other modules which operate on bytecodes (e.g. peephole optimizers). """ __all__ = ["cmp_op", "hasarg", "hasconst", "hasname", "hasjrel", "hasjabs", "haslocal", "hascompare", "hasfree", "hasexc", "opname", "opmap", "HAVE_ARGUMENT", "EXTENDED_ARG"] # It's a chicken-and-egg I'm afraid: # We're imported before _opcode's made. # With exception unheeded # (stack_effect is not needed) # Both our chickens and eggs are allayed. # --Larry Hastings, 2013/11/23 try: from _opcode import stack_effect __all__.append('stack_effect') except ImportError: pass cmp_op = ('<', '<=', '==', '!=', '>', '>=') hasarg = [] hasconst = [] hasname = [] hasjrel = [] hasjabs = [] haslocal = [] hascompare = [] hasfree = [] hasexc = [] ENABLE_SPECIALIZATION = True def is_pseudo(op): return op >= MIN_PSEUDO_OPCODE and op <= MAX_PSEUDO_OPCODE oplists = [hasarg, hasconst, hasname, hasjrel, hasjabs, haslocal, hascompare, hasfree, hasexc] opmap = {} ## pseudo opcodes (used in the compiler) mapped to the values ## they can become in the actual code. _pseudo_ops = {} def def_op(name, op): opmap[name] = op def name_op(name, op): def_op(name, op) hasname.append(op) def jrel_op(name, op): def_op(name, op) hasjrel.append(op) def jabs_op(name, op): def_op(name, op) hasjabs.append(op) def pseudo_op(name, op, real_ops): def_op(name, op) _pseudo_ops[name] = real_ops # add the pseudo opcode to the lists its targets are in for oplist in oplists: res = [opmap[rop] in oplist for rop in real_ops] if any(res): assert all(res) oplist.append(op) # Instruction opcodes for compiled code # Blank lines correspond to available opcodes def_op('CACHE', 0) def_op('POP_TOP', 1) def_op('PUSH_NULL', 2) def_op('INTERPRETER_EXIT', 3) def_op('END_FOR', 4) def_op('END_SEND', 5) def_op('NOP', 9) def_op('UNARY_NEGATIVE', 11) def_op('UNARY_NOT', 12) def_op('UNARY_INVERT', 15) # We reserve 17 as it is the initial value for the specializing counter # This helps us catch cases where we attempt to execute a cache. def_op('RESERVED', 17) def_op('BINARY_SUBSCR', 25) def_op('BINARY_SLICE', 26) def_op('STORE_SLICE', 27) def_op('GET_LEN', 30) def_op('MATCH_MAPPING', 31) def_op('MATCH_SEQUENCE', 32) def_op('MATCH_KEYS', 33) def_op('PUSH_EXC_INFO', 35) def_op('CHECK_EXC_MATCH', 36) def_op('CHECK_EG_MATCH', 37) def_op('WITH_EXCEPT_START', 49) def_op('GET_AITER', 50) def_op('GET_ANEXT', 51) def_op('BEFORE_ASYNC_WITH', 52) def_op('BEFORE_WITH', 53) def_op('END_ASYNC_FOR', 54) def_op('CLEANUP_THROW', 55) def_op('STORE_SUBSCR', 60) def_op('DELETE_SUBSCR', 61) def_op('GET_ITER', 68) def_op('GET_YIELD_FROM_ITER', 69) def_op('LOAD_BUILD_CLASS', 71) def_op('LOAD_ASSERTION_ERROR', 74) def_op('RETURN_GENERATOR', 75) def_op('RETURN_VALUE', 83) def_op('SETUP_ANNOTATIONS', 85) def_op('LOAD_LOCALS', 87) def_op('POP_EXCEPT', 89) HAVE_ARGUMENT = 90 # real opcodes from here have an argument: name_op('STORE_NAME', 90) # Index in name list name_op('DELETE_NAME', 91) # "" def_op('UNPACK_SEQUENCE', 92) # Number of tuple items jrel_op('FOR_ITER', 93) def_op('UNPACK_EX', 94) name_op('STORE_ATTR', 95) # Index in name list name_op('DELETE_ATTR', 96) # "" name_op('STORE_GLOBAL', 97) # "" name_op('DELETE_GLOBAL', 98) # "" def_op('SWAP', 99) def_op('LOAD_CONST', 100) # Index in const list hasconst.append(100) name_op('LOAD_NAME', 101) # Index in name list def_op('BUILD_TUPLE', 102) # Number of tuple items def_op('BUILD_LIST', 103) # Number of list items def_op('BUILD_SET', 104) # Number of set items def_op('BUILD_MAP', 105) # Number of dict entries name_op('LOAD_ATTR', 106) # Index in name list def_op('COMPARE_OP', 107) # Comparison operator hascompare.append(107) name_op('IMPORT_NAME', 108) # Index in name list name_op('IMPORT_FROM', 109) # Index in name list jrel_op('JUMP_FORWARD', 110) # Number of words to skip jrel_op('POP_JUMP_IF_FALSE', 114) jrel_op('POP_JUMP_IF_TRUE', 115) name_op('LOAD_GLOBAL', 116) # Index in name list def_op('IS_OP', 117) def_op('CONTAINS_OP', 118) def_op('RERAISE', 119) def_op('COPY', 120) def_op('RETURN_CONST', 121) hasconst.append(121) def_op('BINARY_OP', 122) jrel_op('SEND', 123) # Number of words to skip def_op('LOAD_FAST', 124) # Local variable number, no null check haslocal.append(124) def_op('STORE_FAST', 125) # Local variable number haslocal.append(125) def_op('DELETE_FAST', 126) # Local variable number haslocal.append(126) def_op('LOAD_FAST_CHECK', 127) # Local variable number haslocal.append(127) jrel_op('POP_JUMP_IF_NOT_NONE', 128) jrel_op('POP_JUMP_IF_NONE', 129) def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3) def_op('GET_AWAITABLE', 131) def_op('MAKE_FUNCTION', 132) # Flags def_op('BUILD_SLICE', 133) # Number of items jrel_op('JUMP_BACKWARD_NO_INTERRUPT', 134) # Number of words to skip (backwards) def_op('MAKE_CELL', 135) hasfree.append(135) def_op('LOAD_CLOSURE', 136) hasfree.append(136) def_op('LOAD_DEREF', 137) hasfree.append(137) def_op('STORE_DEREF', 138) hasfree.append(138) def_op('DELETE_DEREF', 139) hasfree.append(139) jrel_op('JUMP_BACKWARD', 140) # Number of words to skip (backwards) name_op('LOAD_SUPER_ATTR', 141) def_op('CALL_FUNCTION_EX', 142) # Flags def_op('LOAD_FAST_AND_CLEAR', 143) # Local variable number haslocal.append(143) def_op('EXTENDED_ARG', 144) EXTENDED_ARG = 144 def_op('LIST_APPEND', 145) def_op('SET_ADD', 146) def_op('MAP_ADD', 147) hasfree.append(148) def_op('COPY_FREE_VARS', 149) def_op('YIELD_VALUE', 150) def_op('RESUME', 151) # This must be kept in sync with deepfreeze.py def_op('MATCH_CLASS', 152) def_op('FORMAT_VALUE', 155) def_op('BUILD_CONST_KEY_MAP', 156) def_op('BUILD_STRING', 157) def_op('LIST_EXTEND', 162) def_op('SET_UPDATE', 163) def_op('DICT_MERGE', 164) def_op('DICT_UPDATE', 165) def_op('CALL', 171) def_op('KW_NAMES', 172) hasconst.append(172) def_op('CALL_INTRINSIC_1', 173) def_op('CALL_INTRINSIC_2', 174) name_op('LOAD_FROM_DICT_OR_GLOBALS', 175) def_op('LOAD_FROM_DICT_OR_DEREF', 176) hasfree.append(176) # Instrumented instructions MIN_INSTRUMENTED_OPCODE = 237 def_op('INSTRUMENTED_LOAD_SUPER_ATTR', 237) def_op('INSTRUMENTED_POP_JUMP_IF_NONE', 238) def_op('INSTRUMENTED_POP_JUMP_IF_NOT_NONE', 239) def_op('INSTRUMENTED_RESUME', 240) def_op('INSTRUMENTED_CALL', 241) def_op('INSTRUMENTED_RETURN_VALUE', 242) def_op('INSTRUMENTED_YIELD_VALUE', 243) def_op('INSTRUMENTED_CALL_FUNCTION_EX', 244) def_op('INSTRUMENTED_JUMP_FORWARD', 245) def_op('INSTRUMENTED_JUMP_BACKWARD', 246) def_op('INSTRUMENTED_RETURN_CONST', 247) def_op('INSTRUMENTED_FOR_ITER', 248) def_op('INSTRUMENTED_POP_JUMP_IF_FALSE', 249) def_op('INSTRUMENTED_POP_JUMP_IF_TRUE', 250) def_op('INSTRUMENTED_END_FOR', 251) def_op('INSTRUMENTED_END_SEND', 252) def_op('INSTRUMENTED_INSTRUCTION', 253) def_op('INSTRUMENTED_LINE', 254) # 255 is reserved hasarg.extend([op for op in opmap.values() if op >= HAVE_ARGUMENT]) MIN_PSEUDO_OPCODE = 256 pseudo_op('SETUP_FINALLY', 256, ['NOP']) hasexc.append(256) pseudo_op('SETUP_CLEANUP', 257, ['NOP']) hasexc.append(257) pseudo_op('SETUP_WITH', 258, ['NOP']) hasexc.append(258) pseudo_op('POP_BLOCK', 259, ['NOP']) pseudo_op('JUMP', 260, ['JUMP_FORWARD', 'JUMP_BACKWARD']) pseudo_op('JUMP_NO_INTERRUPT', 261, ['JUMP_FORWARD', 'JUMP_BACKWARD_NO_INTERRUPT']) pseudo_op('LOAD_METHOD', 262, ['LOAD_ATTR']) pseudo_op('LOAD_SUPER_METHOD', 263, ['LOAD_SUPER_ATTR']) pseudo_op('LOAD_ZERO_SUPER_METHOD', 264, ['LOAD_SUPER_ATTR']) pseudo_op('LOAD_ZERO_SUPER_ATTR', 265, ['LOAD_SUPER_ATTR']) pseudo_op('STORE_FAST_MAYBE_NULL', 266, ['STORE_FAST']) MAX_PSEUDO_OPCODE = MIN_PSEUDO_OPCODE + len(_pseudo_ops) - 1 del def_op, name_op, jrel_op, jabs_op, pseudo_op opname = ['<%r>' % (op,) for op in range(MAX_PSEUDO_OPCODE + 1)] for op, i in opmap.items(): opname[i] = op _nb_ops = [ ("NB_ADD", "+"), ("NB_AND", "&"), ("NB_FLOOR_DIVIDE", "//"), ("NB_LSHIFT", "<<"), ("NB_MATRIX_MULTIPLY", "@"), ("NB_MULTIPLY", "*"), ("NB_REMAINDER", "%"), ("NB_OR", "|"), ("NB_POWER", "**"), ("NB_RSHIFT", ">>"), ("NB_SUBTRACT", "-"), ("NB_TRUE_DIVIDE", "/"), ("NB_XOR", "^"), ("NB_INPLACE_ADD", "+="), ("NB_INPLACE_AND", "&="), ("NB_INPLACE_FLOOR_DIVIDE", "//="), ("NB_INPLACE_LSHIFT", "<<="), ("NB_INPLACE_MATRIX_MULTIPLY", "@="), ("NB_INPLACE_MULTIPLY", "*="), ("NB_INPLACE_REMAINDER", "%="), ("NB_INPLACE_OR", "|="), ("NB_INPLACE_POWER", "**="), ("NB_INPLACE_RSHIFT", ">>="), ("NB_INPLACE_SUBTRACT", "-="), ("NB_INPLACE_TRUE_DIVIDE", "/="), ("NB_INPLACE_XOR", "^="), ] _intrinsic_1_descs = [ "INTRINSIC_1_INVALID", "INTRINSIC_PRINT", "INTRINSIC_IMPORT_STAR", "INTRINSIC_STOPITERATION_ERROR", "INTRINSIC_ASYNC_GEN_WRAP", "INTRINSIC_UNARY_POSITIVE", "INTRINSIC_LIST_TO_TUPLE", "INTRINSIC_TYPEVAR", "INTRINSIC_PARAMSPEC", "INTRINSIC_TYPEVARTUPLE", "INTRINSIC_SUBSCRIPT_GENERIC", "INTRINSIC_TYPEALIAS", ] _intrinsic_2_descs = [ "INTRINSIC_2_INVALID", "INTRINSIC_PREP_RERAISE_STAR", "INTRINSIC_TYPEVAR_WITH_BOUND", "INTRINSIC_TYPEVAR_WITH_CONSTRAINTS", "INTRINSIC_SET_FUNCTION_TYPE_PARAMS", ] _specializations = { "BINARY_OP": [ "BINARY_OP_ADD_FLOAT", "BINARY_OP_ADD_INT", "BINARY_OP_ADD_UNICODE", "BINARY_OP_INPLACE_ADD_UNICODE", "BINARY_OP_MULTIPLY_FLOAT", "BINARY_OP_MULTIPLY_INT", "BINARY_OP_SUBTRACT_FLOAT", "BINARY_OP_SUBTRACT_INT", ], "BINARY_SUBSCR": [ "BINARY_SUBSCR_DICT", "BINARY_SUBSCR_GETITEM", "BINARY_SUBSCR_LIST_INT", "BINARY_SUBSCR_TUPLE_INT", ], "CALL": [ "CALL_PY_EXACT_ARGS", "CALL_PY_WITH_DEFAULTS", "CALL_BOUND_METHOD_EXACT_ARGS", "CALL_BUILTIN_CLASS", "CALL_BUILTIN_FAST_WITH_KEYWORDS", "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS", "CALL_NO_KW_BUILTIN_FAST", "CALL_NO_KW_BUILTIN_O", "CALL_NO_KW_ISINSTANCE", "CALL_NO_KW_LEN", "CALL_NO_KW_LIST_APPEND", "CALL_NO_KW_METHOD_DESCRIPTOR_FAST", "CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS", "CALL_NO_KW_METHOD_DESCRIPTOR_O", "CALL_NO_KW_STR_1", "CALL_NO_KW_TUPLE_1", "CALL_NO_KW_TYPE_1", ], "COMPARE_OP": [ "COMPARE_OP_FLOAT", "COMPARE_OP_INT", "COMPARE_OP_STR", ], "FOR_ITER": [ "FOR_ITER_LIST", "FOR_ITER_TUPLE", "FOR_ITER_RANGE", "FOR_ITER_GEN", ], "LOAD_SUPER_ATTR": [ "LOAD_SUPER_ATTR_ATTR", "LOAD_SUPER_ATTR_METHOD", ], "LOAD_ATTR": [ # These potentially push [NULL, bound method] onto the stack. "LOAD_ATTR_CLASS", "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN", "LOAD_ATTR_INSTANCE_VALUE", "LOAD_ATTR_MODULE", "LOAD_ATTR_PROPERTY", "LOAD_ATTR_SLOT", "LOAD_ATTR_WITH_HINT", # These will always push [unbound method, self] onto the stack. "LOAD_ATTR_METHOD_LAZY_DICT", "LOAD_ATTR_METHOD_NO_DICT", "LOAD_ATTR_METHOD_WITH_VALUES", ], "LOAD_CONST": [ "LOAD_CONST__LOAD_FAST", ], "LOAD_FAST": [ "LOAD_FAST__LOAD_CONST", "LOAD_FAST__LOAD_FAST", ], "LOAD_GLOBAL": [ "LOAD_GLOBAL_BUILTIN", "LOAD_GLOBAL_MODULE", ], "STORE_ATTR": [ "STORE_ATTR_INSTANCE_VALUE", "STORE_ATTR_SLOT", "STORE_ATTR_WITH_HINT", ], "STORE_FAST": [ "STORE_FAST__LOAD_FAST", "STORE_FAST__STORE_FAST", ], "STORE_SUBSCR": [ "STORE_SUBSCR_DICT", "STORE_SUBSCR_LIST_INT", ], "UNPACK_SEQUENCE": [ "UNPACK_SEQUENCE_LIST", "UNPACK_SEQUENCE_TUPLE", "UNPACK_SEQUENCE_TWO_TUPLE", ], "SEND": [ "SEND_GEN", ], } _specialized_instructions = [ opcode for family in _specializations.values() for opcode in family ] _cache_format = { "LOAD_GLOBAL": { "counter": 1, "index": 1, "module_keys_version": 1, "builtin_keys_version": 1, }, "BINARY_OP": { "counter": 1, }, "UNPACK_SEQUENCE": { "counter": 1, }, "COMPARE_OP": { "counter": 1, }, "BINARY_SUBSCR": { "counter": 1, }, "FOR_ITER": { "counter": 1, }, "LOAD_SUPER_ATTR": { "counter": 1, }, "LOAD_ATTR": { "counter": 1, "version": 2, "keys_version": 2, "descr": 4, }, "STORE_ATTR": { "counter": 1, "version": 2, "index": 1, }, "CALL": { "counter": 1, "func_version": 2, }, "STORE_SUBSCR": { "counter": 1, }, "SEND": { "counter": 1, }, } _inline_cache_entries = [ sum(_cache_format.get(opname[opcode], {}).values()) for opcode in range(256) ]