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Kaydet (Commit) 19c6ba36 authored tarafından Skip Montanaro's avatar Skip Montanaro
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* separate opcode definitions into opcode.py 

* add disassemble_string
* allow classes and strings containing bytecode to be disassembled
üst 3249ccd0
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Showing with 51 additions and 178 deletions
Lib/dis.py
Dosyayı görüntüle @ 19c6ba36
......@@ -3,9 +3,11 @@
import sys
import types
__all__ = ["dis","disassemble","distb","disco","opname","cmp_op",
"hasconst","hasname","hasjrel","hasjabs","haslocal",
"hascompare", "hasfree"]
from opcode import *
from opcode import __all__ as _opcodes_all
__all__ = ["dis","disassemble","distb","disco"] + _opcodes_all
del _opcodes_all
def dis(x=None):
"""Disassemble classes, methods, functions, or code.
......@@ -28,7 +30,8 @@ def dis(x=None):
for name, x1 in items:
if type(x1) in (types.MethodType,
types.FunctionType,
types.CodeType):
types.CodeType,
types.ClassType):
print "Disassembly of %s:" % name
try:
dis(x1)
......@@ -37,6 +40,8 @@ def dis(x=None):
print
elif hasattr(x, 'co_code'):
disassemble(x)
elif isinstance(x, str):
disassemble_string(x)
else:
raise TypeError, \
"don't know how to disassemble %s objects" % \
......@@ -124,6 +129,48 @@ def disassemble(co, lasti=-1):
print '(' + free[oparg] + ')',
print
def disassemble_string(code, lasti=-1, varnames=None, names=None,
constants=None):
labels = findlabels(code)
n = len(code)
i = 0
while i < n:
c = code[i]
op = ord(c)
if op == opmap['SET_LINENO'] and i > 0:
print # Extra blank line
if i == lasti: print '-->',
else: print ' ',
if i in labels: print '>>',
else: print ' ',
print `i`.rjust(4),
print opname[op].ljust(15),
i = i+1
if op >= HAVE_ARGUMENT:
oparg = ord(code[i]) + ord(code[i+1])*256
i = i+2
print `oparg`.rjust(5),
if op in hasconst:
if constants:
print '(' + `constants[oparg]` + ')',
else:
print '(%d)'%oparg,
elif op in hasname:
if names is not None:
print '(' + names[oparg] + ')',
else:
print '(%d)'%oparg,
elif op in hasjrel:
print '(to ' + `i + oparg` + ')',
elif op in haslocal:
if varnames:
print '(' + varnames[oparg] + ')',
else:
print '(%d)' % oparg,
elif op in hascompare:
print '(' + cmp_op[oparg] + ')',
print
disco = disassemble # XXX For backwards compatibility
def findlabels(code):
......@@ -152,180 +199,6 @@ def findlabels(code):
labels.append(label)
return labels
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')
hasconst = []
hasname = []
hasjrel = []
hasjabs = []
haslocal = []
hascompare = []
hasfree = []
opname = [''] * 256
for op in range(256): opname[op] = '<' + `op` + '>'
del op
def def_op(name, op):
opname[op] = name
def name_op(name, op):
opname[op] = name
hasname.append(op)
def jrel_op(name, op):
opname[op] = name
hasjrel.append(op)
def jabs_op(name, op):
opname[op] = name
hasjabs.append(op)
# Instruction opcodes for compiled code
def_op('STOP_CODE', 0)
def_op('POP_TOP', 1)
def_op('ROT_TWO', 2)
def_op('ROT_THREE', 3)
def_op('DUP_TOP', 4)
def_op('ROT_FOUR', 5)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)
def_op('UNARY_NOT', 12)
def_op('UNARY_CONVERT', 13)
def_op('UNARY_INVERT', 15)
def_op('BINARY_POWER', 19)
def_op('BINARY_MULTIPLY', 20)
def_op('BINARY_DIVIDE', 21)
def_op('BINARY_MODULO', 22)
def_op('BINARY_ADD', 23)
def_op('BINARY_SUBTRACT', 24)
def_op('BINARY_SUBSCR', 25)
def_op('BINARY_FLOOR_DIVIDE', 26)
def_op('BINARY_TRUE_DIVIDE', 27)
def_op('INPLACE_FLOOR_DIVIDE', 28)
def_op('INPLACE_TRUE_DIVIDE', 29)
def_op('SLICE+0', 30)
def_op('SLICE+1', 31)
def_op('SLICE+2', 32)
def_op('SLICE+3', 33)
def_op('STORE_SLICE+0', 40)
def_op('STORE_SLICE+1', 41)
def_op('STORE_SLICE+2', 42)
def_op('STORE_SLICE+3', 43)
def_op('DELETE_SLICE+0', 50)
def_op('DELETE_SLICE+1', 51)
def_op('DELETE_SLICE+2', 52)
def_op('DELETE_SLICE+3', 53)
def_op('INPLACE_ADD', 55)
def_op('INPLACE_SUBTRACT', 56)
def_op('INPLACE_MULTIPLY', 57)
def_op('INPLACE_DIVIDE', 58)
def_op('INPLACE_MODULO', 59)
def_op('STORE_SUBSCR', 60)
def_op('DELETE_SUBSCR', 61)
def_op('BINARY_LSHIFT', 62)
def_op('BINARY_RSHIFT', 63)
def_op('BINARY_AND', 64)
def_op('BINARY_XOR', 65)
def_op('BINARY_OR', 66)
def_op('INPLACE_POWER', 67)
def_op('GET_ITER', 68)
def_op('PRINT_EXPR', 70)
def_op('PRINT_ITEM', 71)
def_op('PRINT_NEWLINE', 72)
def_op('PRINT_ITEM_TO', 73)
def_op('PRINT_NEWLINE_TO', 74)
def_op('INPLACE_LSHIFT', 75)
def_op('INPLACE_RSHIFT', 76)
def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('BREAK_LOOP', 80)
def_op('LOAD_LOCALS', 82)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('EXEC_STMT', 85)
def_op('YIELD_VALUE', 86)
def_op('POP_BLOCK', 87)
def_op('END_FINALLY', 88)
def_op('BUILD_CLASS', 89)
HAVE_ARGUMENT = 90 # 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)
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('DUP_TOPX', 99) # number of items to duplicate
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_MAP', 104) # Always zero for now
name_op('LOAD_ATTR', 105) # Index in name list
def_op('COMPARE_OP', 106) # Comparison operator
hascompare.append(106)
name_op('IMPORT_NAME', 107) # Index in name list
name_op('IMPORT_FROM', 108) # Index in name list
jrel_op('JUMP_FORWARD', 110) # Number of bytes to skip
jrel_op('JUMP_IF_FALSE', 111) # ""
jrel_op('JUMP_IF_TRUE', 112) # ""
jabs_op('JUMP_ABSOLUTE', 113) # Target byte offset from beginning of code
name_op('LOAD_GLOBAL', 116) # Index in name list
jabs_op('CONTINUE_LOOP', 119) # Target address
jrel_op('SETUP_LOOP', 120) # Distance to target address
jrel_op('SETUP_EXCEPT', 121) # ""
jrel_op('SETUP_FINALLY', 122) # ""
def_op('LOAD_FAST', 124) # Local variable number
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('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
def_op('MAKE_FUNCTION', 132) # Number of args with default values
def_op('BUILD_SLICE', 133) # Number of items
def_op('MAKE_CLOSURE', 134)
def_op('LOAD_CLOSURE', 135)
hasfree.append(135)
def_op('LOAD_DEREF', 136)
hasfree.append(136)
def_op('STORE_DEREF', 137)
hasfree.append(137)
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
def_op('EXTENDED_ARG', 143)
EXTENDED_ARG = 143
def _test():
"""Simple test program to disassemble a file."""
......
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