AppPkg/Applications/Python/Python-2.7.10: Initial Checkin part 4/5.
The Lib directory from the cPython 2.7.10 distribution. These files are unchanged and set the baseline for subsequent commits. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Daryl McDaniel <edk2-lists@mc2research.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18740 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Daryl McDaniel
committed by
darylm503
darylm503
parent
53b2ba5790
commit
3257aa9932
224
AppPkg/Applications/Python/Python-2.7.10/Lib/dis.py
Normal file
224
AppPkg/Applications/Python/Python-2.7.10/Lib/dis.py
Normal file
@ -0,0 +1,224 @@
|
||||
"""Disassembler of Python byte code into mnemonics."""
|
||||
|
||||
import sys
|
||||
import types
|
||||
|
||||
from opcode import *
|
||||
from opcode import __all__ as _opcodes_all
|
||||
|
||||
__all__ = ["dis", "disassemble", "distb", "disco",
|
||||
"findlinestarts", "findlabels"] + _opcodes_all
|
||||
del _opcodes_all
|
||||
|
||||
_have_code = (types.MethodType, types.FunctionType, types.CodeType,
|
||||
types.ClassType, type)
|
||||
|
||||
def dis(x=None):
|
||||
"""Disassemble classes, methods, functions, or code.
|
||||
|
||||
With no argument, disassemble the last traceback.
|
||||
|
||||
"""
|
||||
if x is None:
|
||||
distb()
|
||||
return
|
||||
if isinstance(x, types.InstanceType):
|
||||
x = x.__class__
|
||||
if hasattr(x, 'im_func'):
|
||||
x = x.im_func
|
||||
if hasattr(x, 'func_code'):
|
||||
x = x.func_code
|
||||
if hasattr(x, '__dict__'):
|
||||
items = x.__dict__.items()
|
||||
items.sort()
|
||||
for name, x1 in items:
|
||||
if isinstance(x1, _have_code):
|
||||
print "Disassembly of %s:" % name
|
||||
try:
|
||||
dis(x1)
|
||||
except TypeError, msg:
|
||||
print "Sorry:", msg
|
||||
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" % \
|
||||
type(x).__name__
|
||||
|
||||
def distb(tb=None):
|
||||
"""Disassemble a traceback (default: last traceback)."""
|
||||
if tb is None:
|
||||
try:
|
||||
tb = sys.last_traceback
|
||||
except AttributeError:
|
||||
raise RuntimeError, "no last traceback to disassemble"
|
||||
while tb.tb_next: tb = tb.tb_next
|
||||
disassemble(tb.tb_frame.f_code, tb.tb_lasti)
|
||||
|
||||
def disassemble(co, lasti=-1):
|
||||
"""Disassemble a code object."""
|
||||
code = co.co_code
|
||||
labels = findlabels(code)
|
||||
linestarts = dict(findlinestarts(co))
|
||||
n = len(code)
|
||||
i = 0
|
||||
extended_arg = 0
|
||||
free = None
|
||||
while i < n:
|
||||
c = code[i]
|
||||
op = ord(c)
|
||||
if i in linestarts:
|
||||
if i > 0:
|
||||
print
|
||||
print "%3d" % linestarts[i],
|
||||
else:
|
||||
print ' ',
|
||||
|
||||
if i == lasti: print '-->',
|
||||
else: print ' ',
|
||||
if i in labels: print '>>',
|
||||
else: print ' ',
|
||||
print repr(i).rjust(4),
|
||||
print opname[op].ljust(20),
|
||||
i = i+1
|
||||
if op >= HAVE_ARGUMENT:
|
||||
oparg = ord(code[i]) + ord(code[i+1])*256 + extended_arg
|
||||
extended_arg = 0
|
||||
i = i+2
|
||||
if op == EXTENDED_ARG:
|
||||
extended_arg = oparg*65536L
|
||||
print repr(oparg).rjust(5),
|
||||
if op in hasconst:
|
||||
print '(' + repr(co.co_consts[oparg]) + ')',
|
||||
elif op in hasname:
|
||||
print '(' + co.co_names[oparg] + ')',
|
||||
elif op in hasjrel:
|
||||
print '(to ' + repr(i + oparg) + ')',
|
||||
elif op in haslocal:
|
||||
print '(' + co.co_varnames[oparg] + ')',
|
||||
elif op in hascompare:
|
||||
print '(' + cmp_op[oparg] + ')',
|
||||
elif op in hasfree:
|
||||
if free is None:
|
||||
free = co.co_cellvars + co.co_freevars
|
||||
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 i == lasti: print '-->',
|
||||
else: print ' ',
|
||||
if i in labels: print '>>',
|
||||
else: print ' ',
|
||||
print repr(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 repr(oparg).rjust(5),
|
||||
if op in hasconst:
|
||||
if constants:
|
||||
print '(' + repr(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 ' + repr(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):
|
||||
"""Detect all offsets in a byte code which are jump targets.
|
||||
|
||||
Return the list of offsets.
|
||||
|
||||
"""
|
||||
labels = []
|
||||
n = len(code)
|
||||
i = 0
|
||||
while i < n:
|
||||
c = code[i]
|
||||
op = ord(c)
|
||||
i = i+1
|
||||
if op >= HAVE_ARGUMENT:
|
||||
oparg = ord(code[i]) + ord(code[i+1])*256
|
||||
i = i+2
|
||||
label = -1
|
||||
if op in hasjrel:
|
||||
label = i+oparg
|
||||
elif op in hasjabs:
|
||||
label = oparg
|
||||
if label >= 0:
|
||||
if label not in labels:
|
||||
labels.append(label)
|
||||
return labels
|
||||
|
||||
def findlinestarts(code):
|
||||
"""Find the offsets in a byte code which are start of lines in the source.
|
||||
|
||||
Generate pairs (offset, lineno) as described in Python/compile.c.
|
||||
|
||||
"""
|
||||
byte_increments = [ord(c) for c in code.co_lnotab[0::2]]
|
||||
line_increments = [ord(c) for c in code.co_lnotab[1::2]]
|
||||
|
||||
lastlineno = None
|
||||
lineno = code.co_firstlineno
|
||||
addr = 0
|
||||
for byte_incr, line_incr in zip(byte_increments, line_increments):
|
||||
if byte_incr:
|
||||
if lineno != lastlineno:
|
||||
yield (addr, lineno)
|
||||
lastlineno = lineno
|
||||
addr += byte_incr
|
||||
lineno += line_incr
|
||||
if lineno != lastlineno:
|
||||
yield (addr, lineno)
|
||||
|
||||
def _test():
|
||||
"""Simple test program to disassemble a file."""
|
||||
if sys.argv[1:]:
|
||||
if sys.argv[2:]:
|
||||
sys.stderr.write("usage: python dis.py [-|file]\n")
|
||||
sys.exit(2)
|
||||
fn = sys.argv[1]
|
||||
if not fn or fn == "-":
|
||||
fn = None
|
||||
else:
|
||||
fn = None
|
||||
if fn is None:
|
||||
f = sys.stdin
|
||||
else:
|
||||
f = open(fn)
|
||||
source = f.read()
|
||||
if fn is not None:
|
||||
f.close()
|
||||
else:
|
||||
fn = "<stdin>"
|
||||
code = compile(source, fn, "exec")
|
||||
dis(code)
|
||||
|
||||
if __name__ == "__main__":
|
||||
_test()
|
||||
Reference in New Issue
Block a user