641 lines
18 KiB
Python
641 lines
18 KiB
Python
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#===- core.py - Python LLVM Bindings -------------------------*- python -*--===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===------------------------------------------------------------------------===#
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from __future__ import print_function
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from .common import LLVMObject
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from .common import c_object_p
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from .common import get_library
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from . import enumerations
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from ctypes import POINTER
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from ctypes import byref
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from ctypes import c_char_p
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from ctypes import c_uint
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import sys
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__all__ = [
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"lib",
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"Enums",
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"OpCode",
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"MemoryBuffer",
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"Module",
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"Value",
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"Function",
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"BasicBlock",
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"Instruction",
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"Context",
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"PassRegistry"
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]
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lib = get_library()
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Enums = []
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class LLVMEnumeration(object):
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"""Represents an individual LLVM enumeration."""
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def __init__(self, name, value):
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self.name = name
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self.value = value
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def __repr__(self):
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return '%s.%s' % (self.__class__.__name__,
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self.name)
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@classmethod
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def from_value(cls, value):
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"""Obtain an enumeration instance from a numeric value."""
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result = cls._value_map.get(value, None)
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if result is None:
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raise ValueError('Unknown %s: %d' % (cls.__name__,
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value))
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return result
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@classmethod
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def register(cls, name, value):
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"""Registers a new enumeration.
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This is called by this module for each enumeration defined in
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enumerations. You should not need to call this outside this module.
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"""
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if value in cls._value_map:
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raise ValueError('%s value already registered: %d' % (cls.__name__,
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value))
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enum = cls(name, value)
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cls._value_map[value] = enum
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setattr(cls, name, enum)
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class Attribute(LLVMEnumeration):
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"""Represents an individual Attribute enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(Attribute, self).__init__(name, value)
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class OpCode(LLVMEnumeration):
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"""Represents an individual OpCode enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(OpCode, self).__init__(name, value)
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class TypeKind(LLVMEnumeration):
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"""Represents an individual TypeKind enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(TypeKind, self).__init__(name, value)
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class Linkage(LLVMEnumeration):
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"""Represents an individual Linkage enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(Linkage, self).__init__(name, value)
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class Visibility(LLVMEnumeration):
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"""Represents an individual visibility enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(Visibility, self).__init__(name, value)
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class CallConv(LLVMEnumeration):
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"""Represents an individual calling convention enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(CallConv, self).__init__(name, value)
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class IntPredicate(LLVMEnumeration):
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"""Represents an individual IntPredicate enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(IntPredicate, self).__init__(name, value)
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class RealPredicate(LLVMEnumeration):
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"""Represents an individual RealPredicate enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(RealPredicate, self).__init__(name, value)
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class LandingPadClauseTy(LLVMEnumeration):
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"""Represents an individual LandingPadClauseTy enumeration."""
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_value_map = {}
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def __init__(self, name, value):
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super(LandingPadClauseTy, self).__init__(name, value)
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class MemoryBuffer(LLVMObject):
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"""Represents an opaque memory buffer."""
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def __init__(self, filename=None):
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"""Create a new memory buffer.
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Currently, we support creating from the contents of a file at the
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specified filename.
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"""
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if filename is None:
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raise Exception("filename argument must be defined")
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memory = c_object_p()
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out = c_char_p(None)
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result = lib.LLVMCreateMemoryBufferWithContentsOfFile(filename,
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byref(memory), byref(out))
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if result:
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raise Exception("Could not create memory buffer: %s" % out.value)
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LLVMObject.__init__(self, memory, disposer=lib.LLVMDisposeMemoryBuffer)
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def __len__(self):
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return lib.LLVMGetBufferSize(self)
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class Value(LLVMObject):
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def __init__(self, value):
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LLVMObject.__init__(self, value)
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@property
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def name(self):
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return lib.LLVMGetValueName(self)
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def dump(self):
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lib.LLVMDumpValue(self)
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def get_operand(self, i):
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return Value(lib.LLVMGetOperand(self, i))
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def set_operand(self, i, v):
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return lib.LLVMSetOperand(self, i, v)
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def __len__(self):
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return lib.LLVMGetNumOperands(self)
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class Module(LLVMObject):
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"""Represents the top-level structure of an llvm program in an opaque object."""
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def __init__(self, module, name=None, context=None):
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LLVMObject.__init__(self, module, disposer=lib.LLVMDisposeModule)
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@classmethod
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def CreateWithName(cls, module_id):
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m = Module(lib.LLVMModuleCreateWithName(module_id))
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Context.GetGlobalContext().take_ownership(m)
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return m
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@property
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def datalayout(self):
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return lib.LLVMGetDataLayout(self)
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@datalayout.setter
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def datalayout(self, new_data_layout):
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"""new_data_layout is a string."""
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lib.LLVMSetDataLayout(self, new_data_layout)
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@property
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def target(self):
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return lib.LLVMGetTarget(self)
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@target.setter
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def target(self, new_target):
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"""new_target is a string."""
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lib.LLVMSetTarget(self, new_target)
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def dump(self):
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lib.LLVMDumpModule(self)
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class __function_iterator(object):
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def __init__(self, module, reverse=False):
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self.module = module
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self.reverse = reverse
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if self.reverse:
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self.function = self.module.last
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else:
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self.function = self.module.first
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def __iter__(self):
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return self
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def __next__(self):
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if not isinstance(self.function, Function):
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raise StopIteration("")
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result = self.function
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if self.reverse:
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self.function = self.function.prev
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else:
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self.function = self.function.next
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return result
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if sys.version_info.major == 2:
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next = __next__
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def __iter__(self):
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return Module.__function_iterator(self)
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def __reversed__(self):
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return Module.__function_iterator(self, reverse=True)
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@property
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def first(self):
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return Function(lib.LLVMGetFirstFunction(self))
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@property
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def last(self):
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return Function(lib.LLVMGetLastFunction(self))
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def print_module_to_file(self, filename):
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out = c_char_p(None)
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# Result is inverted so 0 means everything was ok.
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result = lib.LLVMPrintModuleToFile(self, filename, byref(out))
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if result:
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raise RuntimeError("LLVM Error: %s" % out.value)
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class Function(Value):
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def __init__(self, value):
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Value.__init__(self, value)
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@property
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def next(self):
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f = lib.LLVMGetNextFunction(self)
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return f and Function(f)
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@property
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def prev(self):
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f = lib.LLVMGetPreviousFunction(self)
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return f and Function(f)
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@property
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def first(self):
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b = lib.LLVMGetFirstBasicBlock(self)
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return b and BasicBlock(b)
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@property
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def last(self):
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b = lib.LLVMGetLastBasicBlock(self)
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return b and BasicBlock(b)
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class __bb_iterator(object):
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def __init__(self, function, reverse=False):
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self.function = function
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self.reverse = reverse
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if self.reverse:
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self.bb = function.last
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else:
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self.bb = function.first
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def __iter__(self):
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return self
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def __next__(self):
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if not isinstance(self.bb, BasicBlock):
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raise StopIteration("")
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result = self.bb
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if self.reverse:
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self.bb = self.bb.prev
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else:
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self.bb = self.bb.next
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return result
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if sys.version_info.major == 2:
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next = __next__
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def __iter__(self):
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return Function.__bb_iterator(self)
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def __reversed__(self):
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return Function.__bb_iterator(self, reverse=True)
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def __len__(self):
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return lib.LLVMCountBasicBlocks(self)
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class BasicBlock(LLVMObject):
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def __init__(self, value):
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LLVMObject.__init__(self, value)
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@property
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def next(self):
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b = lib.LLVMGetNextBasicBlock(self)
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return b and BasicBlock(b)
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@property
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def prev(self):
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b = lib.LLVMGetPreviousBasicBlock(self)
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return b and BasicBlock(b)
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@property
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def first(self):
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i = lib.LLVMGetFirstInstruction(self)
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return i and Instruction(i)
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@property
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def last(self):
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i = lib.LLVMGetLastInstruction(self)
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return i and Instruction(i)
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def __as_value(self):
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return Value(lib.LLVMBasicBlockAsValue(self))
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@property
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def name(self):
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return lib.LLVMGetValueName(self.__as_value())
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def dump(self):
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lib.LLVMDumpValue(self.__as_value())
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def get_operand(self, i):
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return Value(lib.LLVMGetOperand(self.__as_value(),
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i))
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def set_operand(self, i, v):
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return lib.LLVMSetOperand(self.__as_value(),
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i, v)
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def __len__(self):
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return lib.LLVMGetNumOperands(self.__as_value())
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class __inst_iterator(object):
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def __init__(self, bb, reverse=False):
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self.bb = bb
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self.reverse = reverse
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if self.reverse:
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self.inst = self.bb.last
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else:
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self.inst = self.bb.first
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def __iter__(self):
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return self
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def __next__(self):
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if not isinstance(self.inst, Instruction):
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raise StopIteration("")
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result = self.inst
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if self.reverse:
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self.inst = self.inst.prev
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else:
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self.inst = self.inst.next
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return result
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if sys.version_info.major == 2:
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next = __next__
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def __iter__(self):
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return BasicBlock.__inst_iterator(self)
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def __reversed__(self):
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return BasicBlock.__inst_iterator(self, reverse=True)
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class Instruction(Value):
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def __init__(self, value):
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Value.__init__(self, value)
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@property
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def next(self):
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i = lib.LLVMGetNextInstruction(self)
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return i and Instruction(i)
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|
|
|
||
|
|
@property
|
||
|
|
def prev(self):
|
||
|
|
i = lib.LLVMGetPreviousInstruction(self)
|
||
|
|
return i and Instruction(i)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def opcode(self):
|
||
|
|
return OpCode.from_value(lib.LLVMGetInstructionOpcode(self))
|
||
|
|
|
||
|
|
class Context(LLVMObject):
|
||
|
|
|
||
|
|
def __init__(self, context=None):
|
||
|
|
if context is None:
|
||
|
|
context = lib.LLVMContextCreate()
|
||
|
|
LLVMObject.__init__(self, context, disposer=lib.LLVMContextDispose)
|
||
|
|
else:
|
||
|
|
LLVMObject.__init__(self, context)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def GetGlobalContext(cls):
|
||
|
|
return Context(lib.LLVMGetGlobalContext())
|
||
|
|
|
||
|
|
class PassRegistry(LLVMObject):
|
||
|
|
"""Represents an opaque pass registry object."""
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
LLVMObject.__init__(self,
|
||
|
|
lib.LLVMGetGlobalPassRegistry())
|
||
|
|
|
||
|
|
def register_library(library):
|
||
|
|
# Initialization/Shutdown declarations.
|
||
|
|
library.LLVMInitializeCore.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeCore.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeTransformUtils.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeTransformUtils.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeScalarOpts.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeScalarOpts.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeObjCARCOpts.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeObjCARCOpts.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeVectorization.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeVectorization.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeInstCombine.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeInstCombine.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeAggressiveInstCombiner.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeAggressiveInstCombiner.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeIPO.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeIPO.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeInstrumentation.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeInstrumentation.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeAnalysis.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeAnalysis.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeCodeGen.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeCodeGen.restype = None
|
||
|
|
|
||
|
|
library.LLVMInitializeTarget.argtypes = [PassRegistry]
|
||
|
|
library.LLVMInitializeTarget.restype = None
|
||
|
|
|
||
|
|
library.LLVMShutdown.argtypes = []
|
||
|
|
library.LLVMShutdown.restype = None
|
||
|
|
|
||
|
|
# Pass Registry declarations.
|
||
|
|
library.LLVMGetGlobalPassRegistry.argtypes = []
|
||
|
|
library.LLVMGetGlobalPassRegistry.restype = c_object_p
|
||
|
|
|
||
|
|
# Context declarations.
|
||
|
|
library.LLVMContextCreate.argtypes = []
|
||
|
|
library.LLVMContextCreate.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMContextDispose.argtypes = [Context]
|
||
|
|
library.LLVMContextDispose.restype = None
|
||
|
|
|
||
|
|
library.LLVMGetGlobalContext.argtypes = []
|
||
|
|
library.LLVMGetGlobalContext.restype = c_object_p
|
||
|
|
|
||
|
|
# Memory buffer declarations
|
||
|
|
library.LLVMCreateMemoryBufferWithContentsOfFile.argtypes = [c_char_p,
|
||
|
|
POINTER(c_object_p), POINTER(c_char_p)]
|
||
|
|
library.LLVMCreateMemoryBufferWithContentsOfFile.restype = bool
|
||
|
|
|
||
|
|
library.LLVMGetBufferSize.argtypes = [MemoryBuffer]
|
||
|
|
|
||
|
|
library.LLVMDisposeMemoryBuffer.argtypes = [MemoryBuffer]
|
||
|
|
|
||
|
|
# Module declarations
|
||
|
|
library.LLVMModuleCreateWithName.argtypes = [c_char_p]
|
||
|
|
library.LLVMModuleCreateWithName.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMDisposeModule.argtypes = [Module]
|
||
|
|
library.LLVMDisposeModule.restype = None
|
||
|
|
|
||
|
|
library.LLVMGetDataLayout.argtypes = [Module]
|
||
|
|
library.LLVMGetDataLayout.restype = c_char_p
|
||
|
|
|
||
|
|
library.LLVMSetDataLayout.argtypes = [Module, c_char_p]
|
||
|
|
library.LLVMSetDataLayout.restype = None
|
||
|
|
|
||
|
|
library.LLVMGetTarget.argtypes = [Module]
|
||
|
|
library.LLVMGetTarget.restype = c_char_p
|
||
|
|
|
||
|
|
library.LLVMSetTarget.argtypes = [Module, c_char_p]
|
||
|
|
library.LLVMSetTarget.restype = None
|
||
|
|
|
||
|
|
library.LLVMDumpModule.argtypes = [Module]
|
||
|
|
library.LLVMDumpModule.restype = None
|
||
|
|
|
||
|
|
library.LLVMPrintModuleToFile.argtypes = [Module, c_char_p,
|
||
|
|
POINTER(c_char_p)]
|
||
|
|
library.LLVMPrintModuleToFile.restype = bool
|
||
|
|
|
||
|
|
library.LLVMGetFirstFunction.argtypes = [Module]
|
||
|
|
library.LLVMGetFirstFunction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetLastFunction.argtypes = [Module]
|
||
|
|
library.LLVMGetLastFunction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetNextFunction.argtypes = [Function]
|
||
|
|
library.LLVMGetNextFunction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetPreviousFunction.argtypes = [Function]
|
||
|
|
library.LLVMGetPreviousFunction.restype = c_object_p
|
||
|
|
|
||
|
|
# Value declarations.
|
||
|
|
library.LLVMGetValueName.argtypes = [Value]
|
||
|
|
library.LLVMGetValueName.restype = c_char_p
|
||
|
|
|
||
|
|
library.LLVMDumpValue.argtypes = [Value]
|
||
|
|
library.LLVMDumpValue.restype = None
|
||
|
|
|
||
|
|
library.LLVMGetOperand.argtypes = [Value, c_uint]
|
||
|
|
library.LLVMGetOperand.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMSetOperand.argtypes = [Value, Value, c_uint]
|
||
|
|
library.LLVMSetOperand.restype = None
|
||
|
|
|
||
|
|
library.LLVMGetNumOperands.argtypes = [Value]
|
||
|
|
library.LLVMGetNumOperands.restype = c_uint
|
||
|
|
|
||
|
|
# Basic Block Declarations.
|
||
|
|
library.LLVMGetFirstBasicBlock.argtypes = [Function]
|
||
|
|
library.LLVMGetFirstBasicBlock.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetLastBasicBlock.argtypes = [Function]
|
||
|
|
library.LLVMGetLastBasicBlock.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetNextBasicBlock.argtypes = [BasicBlock]
|
||
|
|
library.LLVMGetNextBasicBlock.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetPreviousBasicBlock.argtypes = [BasicBlock]
|
||
|
|
library.LLVMGetPreviousBasicBlock.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetFirstInstruction.argtypes = [BasicBlock]
|
||
|
|
library.LLVMGetFirstInstruction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetLastInstruction.argtypes = [BasicBlock]
|
||
|
|
library.LLVMGetLastInstruction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMBasicBlockAsValue.argtypes = [BasicBlock]
|
||
|
|
library.LLVMBasicBlockAsValue.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMCountBasicBlocks.argtypes = [Function]
|
||
|
|
library.LLVMCountBasicBlocks.restype = c_uint
|
||
|
|
|
||
|
|
# Instruction Declarations.
|
||
|
|
library.LLVMGetNextInstruction.argtypes = [Instruction]
|
||
|
|
library.LLVMGetNextInstruction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetPreviousInstruction.argtypes = [Instruction]
|
||
|
|
library.LLVMGetPreviousInstruction.restype = c_object_p
|
||
|
|
|
||
|
|
library.LLVMGetInstructionOpcode.argtypes = [Instruction]
|
||
|
|
library.LLVMGetInstructionOpcode.restype = c_uint
|
||
|
|
|
||
|
|
def register_enumerations():
|
||
|
|
if Enums:
|
||
|
|
return None
|
||
|
|
enums = [
|
||
|
|
(Attribute, enumerations.Attributes),
|
||
|
|
(OpCode, enumerations.OpCodes),
|
||
|
|
(TypeKind, enumerations.TypeKinds),
|
||
|
|
(Linkage, enumerations.Linkages),
|
||
|
|
(Visibility, enumerations.Visibility),
|
||
|
|
(CallConv, enumerations.CallConv),
|
||
|
|
(IntPredicate, enumerations.IntPredicate),
|
||
|
|
(RealPredicate, enumerations.RealPredicate),
|
||
|
|
(LandingPadClauseTy, enumerations.LandingPadClauseTy),
|
||
|
|
]
|
||
|
|
for enum_class, enum_spec in enums:
|
||
|
|
for name, value in enum_spec:
|
||
|
|
print(name, value)
|
||
|
|
enum_class.register(name, value)
|
||
|
|
return enums
|
||
|
|
|
||
|
|
def initialize_llvm():
|
||
|
|
Context.GetGlobalContext()
|
||
|
|
p = PassRegistry()
|
||
|
|
lib.LLVMInitializeCore(p)
|
||
|
|
lib.LLVMInitializeTransformUtils(p)
|
||
|
|
lib.LLVMInitializeScalarOpts(p)
|
||
|
|
lib.LLVMInitializeObjCARCOpts(p)
|
||
|
|
lib.LLVMInitializeVectorization(p)
|
||
|
|
lib.LLVMInitializeInstCombine(p)
|
||
|
|
lib.LLVMInitializeIPO(p)
|
||
|
|
lib.LLVMInitializeInstrumentation(p)
|
||
|
|
lib.LLVMInitializeAnalysis(p)
|
||
|
|
lib.LLVMInitializeCodeGen(p)
|
||
|
|
lib.LLVMInitializeTarget(p)
|
||
|
|
|
||
|
|
register_library(lib)
|
||
|
|
Enums = register_enumerations()
|
||
|
|
initialize_llvm()
|