mirror of https://github.com/python/cpython
443 lines
11 KiB
Python
443 lines
11 KiB
Python
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"""
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opcode module - potentially shared between dis and other modules which
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operate on bytecodes (e.g. peephole optimizers).
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"""
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__all__ = ["cmp_op", "hasarg", "hasconst", "hasname", "hasjrel", "hasjabs",
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"haslocal", "hascompare", "hasfree", "hasexc", "opname", "opmap",
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"HAVE_ARGUMENT", "EXTENDED_ARG"]
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# It's a chicken-and-egg I'm afraid:
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# We're imported before _opcode's made.
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# With exception unheeded
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# (stack_effect is not needed)
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# Both our chickens and eggs are allayed.
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# --Larry Hastings, 2013/11/23
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try:
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from _opcode import stack_effect
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__all__.append('stack_effect')
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except ImportError:
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pass
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cmp_op = ('<', '<=', '==', '!=', '>', '>=')
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hasarg = []
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hasconst = []
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hasname = []
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hasjrel = []
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hasjabs = []
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haslocal = []
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hascompare = []
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hasfree = []
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hasexc = []
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ENABLE_SPECIALIZATION = True
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def is_pseudo(op):
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return op >= MIN_PSEUDO_OPCODE and op <= MAX_PSEUDO_OPCODE
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oplists = [hasarg, hasconst, hasname, hasjrel, hasjabs,
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haslocal, hascompare, hasfree, hasexc]
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opmap = {}
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## pseudo opcodes (used in the compiler) mapped to the values
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## they can become in the actual code.
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_pseudo_ops = {}
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def def_op(name, op):
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opmap[name] = op
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def name_op(name, op):
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def_op(name, op)
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hasname.append(op)
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def jrel_op(name, op):
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def_op(name, op)
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hasjrel.append(op)
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def jabs_op(name, op):
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def_op(name, op)
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hasjabs.append(op)
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def pseudo_op(name, op, real_ops):
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def_op(name, op)
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_pseudo_ops[name] = real_ops
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# add the pseudo opcode to the lists its targets are in
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for oplist in oplists:
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res = [opmap[rop] in oplist for rop in real_ops]
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if any(res):
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assert all(res)
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oplist.append(op)
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# Instruction opcodes for compiled code
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# Blank lines correspond to available opcodes
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def_op('CACHE', 0)
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def_op('POP_TOP', 1)
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def_op('PUSH_NULL', 2)
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def_op('INTERPRETER_EXIT', 3)
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def_op('END_FOR', 4)
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def_op('NOP', 9)
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def_op('UNARY_NEGATIVE', 11)
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def_op('UNARY_NOT', 12)
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def_op('UNARY_INVERT', 15)
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def_op('BINARY_SUBSCR', 25)
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def_op('BINARY_SLICE', 26)
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def_op('STORE_SLICE', 27)
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def_op('GET_LEN', 30)
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def_op('MATCH_MAPPING', 31)
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def_op('MATCH_SEQUENCE', 32)
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def_op('MATCH_KEYS', 33)
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def_op('PUSH_EXC_INFO', 35)
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def_op('CHECK_EXC_MATCH', 36)
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def_op('CHECK_EG_MATCH', 37)
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def_op('WITH_EXCEPT_START', 49)
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def_op('GET_AITER', 50)
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def_op('GET_ANEXT', 51)
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def_op('BEFORE_ASYNC_WITH', 52)
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def_op('BEFORE_WITH', 53)
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def_op('END_ASYNC_FOR', 54)
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def_op('CLEANUP_THROW', 55)
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def_op('STORE_SUBSCR', 60)
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def_op('DELETE_SUBSCR', 61)
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def_op('GET_ITER', 68)
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def_op('GET_YIELD_FROM_ITER', 69)
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def_op('LOAD_BUILD_CLASS', 71)
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def_op('LOAD_ASSERTION_ERROR', 74)
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def_op('RETURN_GENERATOR', 75)
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def_op('RETURN_VALUE', 83)
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def_op('SETUP_ANNOTATIONS', 85)
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def_op('POP_EXCEPT', 89)
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HAVE_ARGUMENT = 90 # real opcodes from here have an argument:
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name_op('STORE_NAME', 90) # Index in name list
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name_op('DELETE_NAME', 91) # ""
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def_op('UNPACK_SEQUENCE', 92) # Number of tuple items
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jrel_op('FOR_ITER', 93)
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def_op('UNPACK_EX', 94)
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name_op('STORE_ATTR', 95) # Index in name list
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name_op('DELETE_ATTR', 96) # ""
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name_op('STORE_GLOBAL', 97) # ""
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name_op('DELETE_GLOBAL', 98) # ""
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def_op('SWAP', 99)
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def_op('LOAD_CONST', 100) # Index in const list
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hasconst.append(100)
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name_op('LOAD_NAME', 101) # Index in name list
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def_op('BUILD_TUPLE', 102) # Number of tuple items
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def_op('BUILD_LIST', 103) # Number of list items
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def_op('BUILD_SET', 104) # Number of set items
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def_op('BUILD_MAP', 105) # Number of dict entries
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name_op('LOAD_ATTR', 106) # Index in name list
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def_op('COMPARE_OP', 107) # Comparison operator
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hascompare.append(107)
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name_op('IMPORT_NAME', 108) # Index in name list
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name_op('IMPORT_FROM', 109) # Index in name list
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jrel_op('JUMP_FORWARD', 110) # Number of words to skip
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jrel_op('JUMP_IF_FALSE_OR_POP', 111) # Number of words to skip
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jrel_op('JUMP_IF_TRUE_OR_POP', 112) # ""
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jrel_op('POP_JUMP_IF_FALSE', 114)
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jrel_op('POP_JUMP_IF_TRUE', 115)
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name_op('LOAD_GLOBAL', 116) # Index in name list
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def_op('IS_OP', 117)
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def_op('CONTAINS_OP', 118)
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def_op('RERAISE', 119)
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def_op('COPY', 120)
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def_op('RETURN_CONST', 121)
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hasconst.append(121)
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def_op('BINARY_OP', 122)
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jrel_op('SEND', 123) # Number of words to skip
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def_op('LOAD_FAST', 124) # Local variable number, no null check
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haslocal.append(124)
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def_op('STORE_FAST', 125) # Local variable number
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haslocal.append(125)
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def_op('DELETE_FAST', 126) # Local variable number
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haslocal.append(126)
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def_op('LOAD_FAST_CHECK', 127) # Local variable number
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haslocal.append(127)
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jrel_op('POP_JUMP_IF_NOT_NONE', 128)
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jrel_op('POP_JUMP_IF_NONE', 129)
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def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
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def_op('GET_AWAITABLE', 131)
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def_op('MAKE_FUNCTION', 132) # Flags
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def_op('BUILD_SLICE', 133) # Number of items
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jrel_op('JUMP_BACKWARD_NO_INTERRUPT', 134) # Number of words to skip (backwards)
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def_op('MAKE_CELL', 135)
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hasfree.append(135)
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def_op('LOAD_CLOSURE', 136)
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hasfree.append(136)
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def_op('LOAD_DEREF', 137)
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hasfree.append(137)
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def_op('STORE_DEREF', 138)
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hasfree.append(138)
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def_op('DELETE_DEREF', 139)
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hasfree.append(139)
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jrel_op('JUMP_BACKWARD', 140) # Number of words to skip (backwards)
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def_op('COMPARE_AND_BRANCH', 141) # Comparison and jump
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hascompare.append(141)
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def_op('CALL_FUNCTION_EX', 142) # Flags
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def_op('EXTENDED_ARG', 144)
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EXTENDED_ARG = 144
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def_op('LIST_APPEND', 145)
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def_op('SET_ADD', 146)
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def_op('MAP_ADD', 147)
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def_op('LOAD_CLASSDEREF', 148)
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hasfree.append(148)
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def_op('COPY_FREE_VARS', 149)
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def_op('YIELD_VALUE', 150)
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def_op('RESUME', 151) # This must be kept in sync with deepfreeze.py
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def_op('MATCH_CLASS', 152)
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def_op('FORMAT_VALUE', 155)
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def_op('BUILD_CONST_KEY_MAP', 156)
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def_op('BUILD_STRING', 157)
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def_op('LIST_EXTEND', 162)
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def_op('SET_UPDATE', 163)
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def_op('DICT_MERGE', 164)
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def_op('DICT_UPDATE', 165)
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def_op('CALL', 171)
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def_op('KW_NAMES', 172)
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hasconst.append(172)
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def_op('CALL_INTRINSIC_1', 173)
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def_op('CALL_INTRINSIC_2', 174)
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hasarg.extend([op for op in opmap.values() if op >= HAVE_ARGUMENT])
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MIN_PSEUDO_OPCODE = 256
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pseudo_op('SETUP_FINALLY', 256, ['NOP'])
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hasexc.append(256)
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pseudo_op('SETUP_CLEANUP', 257, ['NOP'])
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hasexc.append(257)
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pseudo_op('SETUP_WITH', 258, ['NOP'])
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hasexc.append(258)
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pseudo_op('POP_BLOCK', 259, ['NOP'])
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pseudo_op('JUMP', 260, ['JUMP_FORWARD', 'JUMP_BACKWARD'])
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pseudo_op('JUMP_NO_INTERRUPT', 261, ['JUMP_FORWARD', 'JUMP_BACKWARD_NO_INTERRUPT'])
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pseudo_op('LOAD_METHOD', 262, ['LOAD_ATTR'])
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MAX_PSEUDO_OPCODE = MIN_PSEUDO_OPCODE + len(_pseudo_ops) - 1
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del def_op, name_op, jrel_op, jabs_op, pseudo_op
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opname = ['<%r>' % (op,) for op in range(MAX_PSEUDO_OPCODE + 1)]
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for op, i in opmap.items():
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opname[i] = op
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_nb_ops = [
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("NB_ADD", "+"),
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("NB_AND", "&"),
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("NB_FLOOR_DIVIDE", "//"),
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("NB_LSHIFT", "<<"),
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("NB_MATRIX_MULTIPLY", "@"),
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("NB_MULTIPLY", "*"),
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("NB_REMAINDER", "%"),
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("NB_OR", "|"),
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("NB_POWER", "**"),
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("NB_RSHIFT", ">>"),
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("NB_SUBTRACT", "-"),
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("NB_TRUE_DIVIDE", "/"),
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("NB_XOR", "^"),
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("NB_INPLACE_ADD", "+="),
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("NB_INPLACE_AND", "&="),
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("NB_INPLACE_FLOOR_DIVIDE", "//="),
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("NB_INPLACE_LSHIFT", "<<="),
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("NB_INPLACE_MATRIX_MULTIPLY", "@="),
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("NB_INPLACE_MULTIPLY", "*="),
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("NB_INPLACE_REMAINDER", "%="),
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("NB_INPLACE_OR", "|="),
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("NB_INPLACE_POWER", "**="),
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("NB_INPLACE_RSHIFT", ">>="),
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("NB_INPLACE_SUBTRACT", "-="),
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("NB_INPLACE_TRUE_DIVIDE", "/="),
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("NB_INPLACE_XOR", "^="),
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]
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_specializations = {
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"BINARY_OP": [
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"BINARY_OP_ADD_FLOAT",
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"BINARY_OP_ADD_INT",
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"BINARY_OP_ADD_UNICODE",
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"BINARY_OP_INPLACE_ADD_UNICODE",
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"BINARY_OP_MULTIPLY_FLOAT",
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"BINARY_OP_MULTIPLY_INT",
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"BINARY_OP_SUBTRACT_FLOAT",
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"BINARY_OP_SUBTRACT_INT",
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],
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"BINARY_SUBSCR": [
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"BINARY_SUBSCR_DICT",
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"BINARY_SUBSCR_GETITEM",
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"BINARY_SUBSCR_LIST_INT",
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"BINARY_SUBSCR_TUPLE_INT",
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],
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"CALL": [
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"CALL_PY_EXACT_ARGS",
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"CALL_PY_WITH_DEFAULTS",
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"CALL_BOUND_METHOD_EXACT_ARGS",
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"CALL_BUILTIN_CLASS",
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"CALL_BUILTIN_FAST_WITH_KEYWORDS",
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"CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
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"CALL_NO_KW_BUILTIN_FAST",
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"CALL_NO_KW_BUILTIN_O",
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"CALL_NO_KW_ISINSTANCE",
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"CALL_NO_KW_LEN",
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"CALL_NO_KW_LIST_APPEND",
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"CALL_NO_KW_METHOD_DESCRIPTOR_FAST",
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"CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS",
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"CALL_NO_KW_METHOD_DESCRIPTOR_O",
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"CALL_NO_KW_STR_1",
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"CALL_NO_KW_TUPLE_1",
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"CALL_NO_KW_TYPE_1",
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],
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"COMPARE_AND_BRANCH": [
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"COMPARE_AND_BRANCH_FLOAT",
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"COMPARE_AND_BRANCH_INT",
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"COMPARE_AND_BRANCH_STR",
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],
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"FOR_ITER": [
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"FOR_ITER_LIST",
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"FOR_ITER_TUPLE",
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"FOR_ITER_RANGE",
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"FOR_ITER_GEN",
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],
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"LOAD_ATTR": [
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# These potentially push [NULL, bound method] onto the stack.
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"LOAD_ATTR_CLASS",
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"LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
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"LOAD_ATTR_INSTANCE_VALUE",
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"LOAD_ATTR_MODULE",
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"LOAD_ATTR_PROPERTY",
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"LOAD_ATTR_SLOT",
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"LOAD_ATTR_WITH_HINT",
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# These will always push [unbound method, self] onto the stack.
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"LOAD_ATTR_METHOD_LAZY_DICT",
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"LOAD_ATTR_METHOD_NO_DICT",
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"LOAD_ATTR_METHOD_WITH_VALUES",
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],
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"LOAD_CONST": [
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"LOAD_CONST__LOAD_FAST",
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],
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"LOAD_FAST": [
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"LOAD_FAST__LOAD_CONST",
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"LOAD_FAST__LOAD_FAST",
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],
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"LOAD_GLOBAL": [
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"LOAD_GLOBAL_BUILTIN",
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"LOAD_GLOBAL_MODULE",
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],
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"STORE_ATTR": [
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"STORE_ATTR_INSTANCE_VALUE",
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"STORE_ATTR_SLOT",
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"STORE_ATTR_WITH_HINT",
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],
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"STORE_FAST": [
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"STORE_FAST__LOAD_FAST",
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"STORE_FAST__STORE_FAST",
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],
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"STORE_SUBSCR": [
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"STORE_SUBSCR_DICT",
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"STORE_SUBSCR_LIST_INT",
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],
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"UNPACK_SEQUENCE": [
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"UNPACK_SEQUENCE_LIST",
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"UNPACK_SEQUENCE_TUPLE",
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"UNPACK_SEQUENCE_TWO_TUPLE",
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],
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"SEND": [
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"SEND_GEN",
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],
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}
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_specialized_instructions = [
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opcode for family in _specializations.values() for opcode in family
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]
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_specialization_stats = [
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"success",
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"failure",
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"hit",
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"deferred",
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"miss",
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"deopt",
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]
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_cache_format = {
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"LOAD_GLOBAL": {
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"counter": 1,
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"index": 1,
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"module_keys_version": 2,
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"builtin_keys_version": 1,
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},
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"BINARY_OP": {
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"counter": 1,
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},
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"UNPACK_SEQUENCE": {
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"counter": 1,
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},
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"COMPARE_OP": {
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"counter": 1,
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},
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"COMPARE_AND_BRANCH": {
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"counter": 1,
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},
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"BINARY_SUBSCR": {
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"counter": 1,
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"type_version": 2,
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"func_version": 1,
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},
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"FOR_ITER": {
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"counter": 1,
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},
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"LOAD_ATTR": {
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"counter": 1,
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"version": 2,
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"keys_version": 2,
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"descr": 4,
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},
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"STORE_ATTR": {
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"counter": 1,
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"version": 2,
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"index": 1,
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},
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"CALL": {
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"counter": 1,
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"func_version": 2,
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"min_args": 1,
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},
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"STORE_SUBSCR": {
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"counter": 1,
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},
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"SEND": {
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"counter": 1,
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},
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}
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_inline_cache_entries = [
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sum(_cache_format.get(opname[opcode], {}).values()) for opcode in range(256)
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]
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