Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/python3/lib/python3.9/dis.py b/linux-x64/clang/python3/lib/python3.9/dis.py
new file mode 100644
index 0000000..e289e17
--- /dev/null
+++ b/linux-x64/clang/python3/lib/python3.9/dis.py
@@ -0,0 +1,553 @@
+"""Disassembler of Python byte code into mnemonics."""
+
+import sys
+import types
+import collections
+import io
+
+from opcode import *
+from opcode import __all__ as _opcodes_all
+
+__all__ = ["code_info", "dis", "disassemble", "distb", "disco",
+ "findlinestarts", "findlabels", "show_code",
+ "get_instructions", "Instruction", "Bytecode"] + _opcodes_all
+del _opcodes_all
+
+_have_code = (types.MethodType, types.FunctionType, types.CodeType,
+ classmethod, staticmethod, type)
+
+FORMAT_VALUE = opmap['FORMAT_VALUE']
+FORMAT_VALUE_CONVERTERS = (
+ (None, ''),
+ (str, 'str'),
+ (repr, 'repr'),
+ (ascii, 'ascii'),
+)
+MAKE_FUNCTION = opmap['MAKE_FUNCTION']
+MAKE_FUNCTION_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure')
+
+
+def _try_compile(source, name):
+ """Attempts to compile the given source, first as an expression and
+ then as a statement if the first approach fails.
+
+ Utility function to accept strings in functions that otherwise
+ expect code objects
+ """
+ try:
+ c = compile(source, name, 'eval')
+ except SyntaxError:
+ c = compile(source, name, 'exec')
+ return c
+
+def dis(x=None, *, file=None, depth=None):
+ """Disassemble classes, methods, functions, and other compiled objects.
+
+ With no argument, disassemble the last traceback.
+
+ Compiled objects currently include generator objects, async generator
+ objects, and coroutine objects, all of which store their code object
+ in a special attribute.
+ """
+ if x is None:
+ distb(file=file)
+ return
+ # Extract functions from methods.
+ if hasattr(x, '__func__'):
+ x = x.__func__
+ # Extract compiled code objects from...
+ if hasattr(x, '__code__'): # ...a function, or
+ x = x.__code__
+ elif hasattr(x, 'gi_code'): #...a generator object, or
+ x = x.gi_code
+ elif hasattr(x, 'ag_code'): #...an asynchronous generator object, or
+ x = x.ag_code
+ elif hasattr(x, 'cr_code'): #...a coroutine.
+ x = x.cr_code
+ # Perform the disassembly.
+ if hasattr(x, '__dict__'): # Class or module
+ items = sorted(x.__dict__.items())
+ for name, x1 in items:
+ if isinstance(x1, _have_code):
+ print("Disassembly of %s:" % name, file=file)
+ try:
+ dis(x1, file=file, depth=depth)
+ except TypeError as msg:
+ print("Sorry:", msg, file=file)
+ print(file=file)
+ elif hasattr(x, 'co_code'): # Code object
+ _disassemble_recursive(x, file=file, depth=depth)
+ elif isinstance(x, (bytes, bytearray)): # Raw bytecode
+ _disassemble_bytes(x, file=file)
+ elif isinstance(x, str): # Source code
+ _disassemble_str(x, file=file, depth=depth)
+ else:
+ raise TypeError("don't know how to disassemble %s objects" %
+ type(x).__name__)
+
+def distb(tb=None, *, file=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") from None
+ while tb.tb_next: tb = tb.tb_next
+ disassemble(tb.tb_frame.f_code, tb.tb_lasti, file=file)
+
+# The inspect module interrogates this dictionary to build its
+# list of CO_* constants. It is also used by pretty_flags to
+# turn the co_flags field into a human readable list.
+COMPILER_FLAG_NAMES = {
+ 1: "OPTIMIZED",
+ 2: "NEWLOCALS",
+ 4: "VARARGS",
+ 8: "VARKEYWORDS",
+ 16: "NESTED",
+ 32: "GENERATOR",
+ 64: "NOFREE",
+ 128: "COROUTINE",
+ 256: "ITERABLE_COROUTINE",
+ 512: "ASYNC_GENERATOR",
+}
+
+def pretty_flags(flags):
+ """Return pretty representation of code flags."""
+ names = []
+ for i in range(32):
+ flag = 1<<i
+ if flags & flag:
+ names.append(COMPILER_FLAG_NAMES.get(flag, hex(flag)))
+ flags ^= flag
+ if not flags:
+ break
+ else:
+ names.append(hex(flags))
+ return ", ".join(names)
+
+def _get_code_object(x):
+ """Helper to handle methods, compiled or raw code objects, and strings."""
+ # Extract functions from methods.
+ if hasattr(x, '__func__'):
+ x = x.__func__
+ # Extract compiled code objects from...
+ if hasattr(x, '__code__'): # ...a function, or
+ x = x.__code__
+ elif hasattr(x, 'gi_code'): #...a generator object, or
+ x = x.gi_code
+ elif hasattr(x, 'ag_code'): #...an asynchronous generator object, or
+ x = x.ag_code
+ elif hasattr(x, 'cr_code'): #...a coroutine.
+ x = x.cr_code
+ # Handle source code.
+ if isinstance(x, str):
+ x = _try_compile(x, "<disassembly>")
+ # By now, if we don't have a code object, we can't disassemble x.
+ if hasattr(x, 'co_code'):
+ return x
+ raise TypeError("don't know how to disassemble %s objects" %
+ type(x).__name__)
+
+def code_info(x):
+ """Formatted details of methods, functions, or code."""
+ return _format_code_info(_get_code_object(x))
+
+def _format_code_info(co):
+ lines = []
+ lines.append("Name: %s" % co.co_name)
+ lines.append("Filename: %s" % co.co_filename)
+ lines.append("Argument count: %s" % co.co_argcount)
+ lines.append("Positional-only arguments: %s" % co.co_posonlyargcount)
+ lines.append("Kw-only arguments: %s" % co.co_kwonlyargcount)
+ lines.append("Number of locals: %s" % co.co_nlocals)
+ lines.append("Stack size: %s" % co.co_stacksize)
+ lines.append("Flags: %s" % pretty_flags(co.co_flags))
+ if co.co_consts:
+ lines.append("Constants:")
+ for i_c in enumerate(co.co_consts):
+ lines.append("%4d: %r" % i_c)
+ if co.co_names:
+ lines.append("Names:")
+ for i_n in enumerate(co.co_names):
+ lines.append("%4d: %s" % i_n)
+ if co.co_varnames:
+ lines.append("Variable names:")
+ for i_n in enumerate(co.co_varnames):
+ lines.append("%4d: %s" % i_n)
+ if co.co_freevars:
+ lines.append("Free variables:")
+ for i_n in enumerate(co.co_freevars):
+ lines.append("%4d: %s" % i_n)
+ if co.co_cellvars:
+ lines.append("Cell variables:")
+ for i_n in enumerate(co.co_cellvars):
+ lines.append("%4d: %s" % i_n)
+ return "\n".join(lines)
+
+def show_code(co, *, file=None):
+ """Print details of methods, functions, or code to *file*.
+
+ If *file* is not provided, the output is printed on stdout.
+ """
+ print(code_info(co), file=file)
+
+_Instruction = collections.namedtuple("_Instruction",
+ "opname opcode arg argval argrepr offset starts_line is_jump_target")
+
+_Instruction.opname.__doc__ = "Human readable name for operation"
+_Instruction.opcode.__doc__ = "Numeric code for operation"
+_Instruction.arg.__doc__ = "Numeric argument to operation (if any), otherwise None"
+_Instruction.argval.__doc__ = "Resolved arg value (if known), otherwise same as arg"
+_Instruction.argrepr.__doc__ = "Human readable description of operation argument"
+_Instruction.offset.__doc__ = "Start index of operation within bytecode sequence"
+_Instruction.starts_line.__doc__ = "Line started by this opcode (if any), otherwise None"
+_Instruction.is_jump_target.__doc__ = "True if other code jumps to here, otherwise False"
+
+_OPNAME_WIDTH = 20
+_OPARG_WIDTH = 5
+
+class Instruction(_Instruction):
+ """Details for a bytecode operation
+
+ Defined fields:
+ opname - human readable name for operation
+ opcode - numeric code for operation
+ arg - numeric argument to operation (if any), otherwise None
+ argval - resolved arg value (if known), otherwise same as arg
+ argrepr - human readable description of operation argument
+ offset - start index of operation within bytecode sequence
+ starts_line - line started by this opcode (if any), otherwise None
+ is_jump_target - True if other code jumps to here, otherwise False
+ """
+
+ def _disassemble(self, lineno_width=3, mark_as_current=False, offset_width=4):
+ """Format instruction details for inclusion in disassembly output
+
+ *lineno_width* sets the width of the line number field (0 omits it)
+ *mark_as_current* inserts a '-->' marker arrow as part of the line
+ *offset_width* sets the width of the instruction offset field
+ """
+ fields = []
+ # Column: Source code line number
+ if lineno_width:
+ if self.starts_line is not None:
+ lineno_fmt = "%%%dd" % lineno_width
+ fields.append(lineno_fmt % self.starts_line)
+ else:
+ fields.append(' ' * lineno_width)
+ # Column: Current instruction indicator
+ if mark_as_current:
+ fields.append('-->')
+ else:
+ fields.append(' ')
+ # Column: Jump target marker
+ if self.is_jump_target:
+ fields.append('>>')
+ else:
+ fields.append(' ')
+ # Column: Instruction offset from start of code sequence
+ fields.append(repr(self.offset).rjust(offset_width))
+ # Column: Opcode name
+ fields.append(self.opname.ljust(_OPNAME_WIDTH))
+ # Column: Opcode argument
+ if self.arg is not None:
+ fields.append(repr(self.arg).rjust(_OPARG_WIDTH))
+ # Column: Opcode argument details
+ if self.argrepr:
+ fields.append('(' + self.argrepr + ')')
+ return ' '.join(fields).rstrip()
+
+
+def get_instructions(x, *, first_line=None):
+ """Iterator for the opcodes in methods, functions or code
+
+ Generates a series of Instruction named tuples giving the details of
+ each operations in the supplied code.
+
+ If *first_line* is not None, it indicates the line number that should
+ be reported for the first source line in the disassembled code.
+ Otherwise, the source line information (if any) is taken directly from
+ the disassembled code object.
+ """
+ co = _get_code_object(x)
+ cell_names = co.co_cellvars + co.co_freevars
+ linestarts = dict(findlinestarts(co))
+ if first_line is not None:
+ line_offset = first_line - co.co_firstlineno
+ else:
+ line_offset = 0
+ return _get_instructions_bytes(co.co_code, co.co_varnames, co.co_names,
+ co.co_consts, cell_names, linestarts,
+ line_offset)
+
+def _get_const_info(const_index, const_list):
+ """Helper to get optional details about const references
+
+ Returns the dereferenced constant and its repr if the constant
+ list is defined.
+ Otherwise returns the constant index and its repr().
+ """
+ argval = const_index
+ if const_list is not None:
+ argval = const_list[const_index]
+ return argval, repr(argval)
+
+def _get_name_info(name_index, name_list):
+ """Helper to get optional details about named references
+
+ Returns the dereferenced name as both value and repr if the name
+ list is defined.
+ Otherwise returns the name index and its repr().
+ """
+ argval = name_index
+ if name_list is not None:
+ argval = name_list[name_index]
+ argrepr = argval
+ else:
+ argrepr = repr(argval)
+ return argval, argrepr
+
+
+def _get_instructions_bytes(code, varnames=None, names=None, constants=None,
+ cells=None, linestarts=None, line_offset=0):
+ """Iterate over the instructions in a bytecode string.
+
+ Generates a sequence of Instruction namedtuples giving the details of each
+ opcode. Additional information about the code's runtime environment
+ (e.g. variable names, constants) can be specified using optional
+ arguments.
+
+ """
+ labels = findlabels(code)
+ starts_line = None
+ for offset, op, arg in _unpack_opargs(code):
+ if linestarts is not None:
+ starts_line = linestarts.get(offset, None)
+ if starts_line is not None:
+ starts_line += line_offset
+ is_jump_target = offset in labels
+ argval = None
+ argrepr = ''
+ if arg is not None:
+ # Set argval to the dereferenced value of the argument when
+ # available, and argrepr to the string representation of argval.
+ # _disassemble_bytes needs the string repr of the
+ # raw name index for LOAD_GLOBAL, LOAD_CONST, etc.
+ argval = arg
+ if op in hasconst:
+ argval, argrepr = _get_const_info(arg, constants)
+ elif op in hasname:
+ argval, argrepr = _get_name_info(arg, names)
+ elif op in hasjrel:
+ argval = offset + 2 + arg
+ argrepr = "to " + repr(argval)
+ elif op in haslocal:
+ argval, argrepr = _get_name_info(arg, varnames)
+ elif op in hascompare:
+ argval = cmp_op[arg]
+ argrepr = argval
+ elif op in hasfree:
+ argval, argrepr = _get_name_info(arg, cells)
+ elif op == FORMAT_VALUE:
+ argval, argrepr = FORMAT_VALUE_CONVERTERS[arg & 0x3]
+ argval = (argval, bool(arg & 0x4))
+ if argval[1]:
+ if argrepr:
+ argrepr += ', '
+ argrepr += 'with format'
+ elif op == MAKE_FUNCTION:
+ argrepr = ', '.join(s for i, s in enumerate(MAKE_FUNCTION_FLAGS)
+ if arg & (1<<i))
+ yield Instruction(opname[op], op,
+ arg, argval, argrepr,
+ offset, starts_line, is_jump_target)
+
+def disassemble(co, lasti=-1, *, file=None):
+ """Disassemble a code object."""
+ cell_names = co.co_cellvars + co.co_freevars
+ linestarts = dict(findlinestarts(co))
+ _disassemble_bytes(co.co_code, lasti, co.co_varnames, co.co_names,
+ co.co_consts, cell_names, linestarts, file=file)
+
+def _disassemble_recursive(co, *, file=None, depth=None):
+ disassemble(co, file=file)
+ if depth is None or depth > 0:
+ if depth is not None:
+ depth = depth - 1
+ for x in co.co_consts:
+ if hasattr(x, 'co_code'):
+ print(file=file)
+ print("Disassembly of %r:" % (x,), file=file)
+ _disassemble_recursive(x, file=file, depth=depth)
+
+def _disassemble_bytes(code, lasti=-1, varnames=None, names=None,
+ constants=None, cells=None, linestarts=None,
+ *, file=None, line_offset=0):
+ # Omit the line number column entirely if we have no line number info
+ show_lineno = linestarts is not None
+ if show_lineno:
+ maxlineno = max(linestarts.values()) + line_offset
+ if maxlineno >= 1000:
+ lineno_width = len(str(maxlineno))
+ else:
+ lineno_width = 3
+ else:
+ lineno_width = 0
+ maxoffset = len(code) - 2
+ if maxoffset >= 10000:
+ offset_width = len(str(maxoffset))
+ else:
+ offset_width = 4
+ for instr in _get_instructions_bytes(code, varnames, names,
+ constants, cells, linestarts,
+ line_offset=line_offset):
+ new_source_line = (show_lineno and
+ instr.starts_line is not None and
+ instr.offset > 0)
+ if new_source_line:
+ print(file=file)
+ is_current_instr = instr.offset == lasti
+ print(instr._disassemble(lineno_width, is_current_instr, offset_width),
+ file=file)
+
+def _disassemble_str(source, **kwargs):
+ """Compile the source string, then disassemble the code object."""
+ _disassemble_recursive(_try_compile(source, '<dis>'), **kwargs)
+
+disco = disassemble # XXX For backwards compatibility
+
+def _unpack_opargs(code):
+ extended_arg = 0
+ for i in range(0, len(code), 2):
+ op = code[i]
+ if op >= HAVE_ARGUMENT:
+ arg = code[i+1] | extended_arg
+ extended_arg = (arg << 8) if op == EXTENDED_ARG else 0
+ else:
+ arg = None
+ yield (i, op, arg)
+
+def findlabels(code):
+ """Detect all offsets in a byte code which are jump targets.
+
+ Return the list of offsets.
+
+ """
+ labels = []
+ for offset, op, arg in _unpack_opargs(code):
+ if arg is not None:
+ if op in hasjrel:
+ label = offset + 2 + arg
+ elif op in hasjabs:
+ label = arg
+ else:
+ continue
+ 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 = code.co_lnotab[0::2]
+ line_increments = code.co_lnotab[1::2]
+ bytecode_len = len(code.co_code)
+
+ 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
+ if addr >= bytecode_len:
+ # The rest of the lnotab byte offsets are past the end of
+ # the bytecode, so the lines were optimized away.
+ return
+ if line_incr >= 0x80:
+ # line_increments is an array of 8-bit signed integers
+ line_incr -= 0x100
+ lineno += line_incr
+ if lineno != lastlineno:
+ yield (addr, lineno)
+
+class Bytecode:
+ """The bytecode operations of a piece of code
+
+ Instantiate this with a function, method, other compiled object, string of
+ code, or a code object (as returned by compile()).
+
+ Iterating over this yields the bytecode operations as Instruction instances.
+ """
+ def __init__(self, x, *, first_line=None, current_offset=None):
+ self.codeobj = co = _get_code_object(x)
+ if first_line is None:
+ self.first_line = co.co_firstlineno
+ self._line_offset = 0
+ else:
+ self.first_line = first_line
+ self._line_offset = first_line - co.co_firstlineno
+ self._cell_names = co.co_cellvars + co.co_freevars
+ self._linestarts = dict(findlinestarts(co))
+ self._original_object = x
+ self.current_offset = current_offset
+
+ def __iter__(self):
+ co = self.codeobj
+ return _get_instructions_bytes(co.co_code, co.co_varnames, co.co_names,
+ co.co_consts, self._cell_names,
+ self._linestarts,
+ line_offset=self._line_offset)
+
+ def __repr__(self):
+ return "{}({!r})".format(self.__class__.__name__,
+ self._original_object)
+
+ @classmethod
+ def from_traceback(cls, tb):
+ """ Construct a Bytecode from the given traceback """
+ while tb.tb_next:
+ tb = tb.tb_next
+ return cls(tb.tb_frame.f_code, current_offset=tb.tb_lasti)
+
+ def info(self):
+ """Return formatted information about the code object."""
+ return _format_code_info(self.codeobj)
+
+ def dis(self):
+ """Return a formatted view of the bytecode operations."""
+ co = self.codeobj
+ if self.current_offset is not None:
+ offset = self.current_offset
+ else:
+ offset = -1
+ with io.StringIO() as output:
+ _disassemble_bytes(co.co_code, varnames=co.co_varnames,
+ names=co.co_names, constants=co.co_consts,
+ cells=self._cell_names,
+ linestarts=self._linestarts,
+ line_offset=self._line_offset,
+ file=output,
+ lasti=offset)
+ return output.getvalue()
+
+
+def _test():
+ """Simple test program to disassemble a file."""
+ import argparse
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument('infile', type=argparse.FileType('rb'), nargs='?', default='-')
+ args = parser.parse_args()
+ with args.infile as infile:
+ source = infile.read()
+ code = compile(source, args.infile.name, "exec")
+ dis(code)
+
+if __name__ == "__main__":
+ _test()