mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
abaa85d88d
Also in the process did some cleanups for BasicBlock. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190477 91177308-0d34-0410-b5e6-96231b3b80d8
541 lines
16 KiB
Python
541 lines
16 KiB
Python
#===- core.py - Python LLVM Bindings -------------------------*- python -*--===#
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#
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# The LLVM Compiler Infrastructure
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#
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# This file is distributed under the University of Illinois Open Source
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# License. See LICENSE.TXT for details.
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#
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#===------------------------------------------------------------------------===#
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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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__all__ = [
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"lib",
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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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class OpCode(object):
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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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self.name = name
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self.value = value
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def __repr__(self):
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return 'OpCode.%s' % self.name
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@staticmethod
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def from_value(value):
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"""Obtain an OpCode instance from a numeric value."""
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result = OpCode._value_map.get(value, None)
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if result is None:
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raise ValueError('Unknown OpCode: %d' % value)
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return result
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@staticmethod
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def register(name, value):
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"""Registers a new OpCode 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 OpCode._value_map:
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raise ValueError('OpCode value already registered: %d' % value)
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opcode = OpCode(name, value)
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OpCode._value_map[value] = opcode
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setattr(OpCode, name, opcode)
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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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c = 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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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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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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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
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def prev(self):
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i = lib.LLVMGetPreviousInstruction(self)
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return i and Instruction(i)
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@property
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def opcode(self):
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return OpCode.from_value(lib.LLVMGetInstructionOpcode(self))
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class Context(LLVMObject):
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def __init__(self, context=None):
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if context is None:
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context = lib.LLVMContextCreate()
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LLVMObject.__init__(self, context, disposer=lib.LLVMContextDispose)
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else:
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LLVMObject.__init__(self, context)
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@classmethod
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def GetGlobalContext(cls):
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return Context(lib.LLVMGetGlobalContext())
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class PassRegistry(LLVMObject):
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"""Represents an opaque pass registry object."""
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def __init__(self):
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LLVMObject.__init__(self,
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lib.LLVMGetGlobalPassRegistry())
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def register_library(library):
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# Initialization/Shutdown declarations.
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library.LLVMInitializeCore.argtypes = [PassRegistry]
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library.LLVMInitializeCore.restype = None
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library.LLVMInitializeTransformUtils.argtypes = [PassRegistry]
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library.LLVMInitializeTransformUtils.restype = None
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library.LLVMInitializeScalarOpts.argtypes = [PassRegistry]
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library.LLVMInitializeScalarOpts.restype = None
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library.LLVMInitializeObjCARCOpts.argtypes = [PassRegistry]
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library.LLVMInitializeObjCARCOpts.restype = None
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library.LLVMInitializeVectorization.argtypes = [PassRegistry]
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library.LLVMInitializeVectorization.restype = None
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library.LLVMInitializeInstCombine.argtypes = [PassRegistry]
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library.LLVMInitializeInstCombine.restype = None
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library.LLVMInitializeIPO.argtypes = [PassRegistry]
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library.LLVMInitializeIPO.restype = None
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library.LLVMInitializeInstrumentation.argtypes = [PassRegistry]
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library.LLVMInitializeInstrumentation.restype = None
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library.LLVMInitializeAnalysis.argtypes = [PassRegistry]
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library.LLVMInitializeAnalysis.restype = None
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library.LLVMInitializeIPA.argtypes = [PassRegistry]
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library.LLVMInitializeIPA.restype = None
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library.LLVMInitializeCodeGen.argtypes = [PassRegistry]
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library.LLVMInitializeCodeGen.restype = None
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library.LLVMInitializeTarget.argtypes = [PassRegistry]
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library.LLVMInitializeTarget.restype = None
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library.LLVMShutdown.argtypes = []
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library.LLVMShutdown.restype = None
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# Pass Registry declarations.
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library.LLVMGetGlobalPassRegistry.argtypes = []
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library.LLVMGetGlobalPassRegistry.restype = c_object_p
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# Context declarations.
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library.LLVMContextCreate.argtypes = []
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library.LLVMContextCreate.restype = c_object_p
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library.LLVMContextDispose.argtypes = [Context]
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library.LLVMContextDispose.restype = None
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library.LLVMGetGlobalContext.argtypes = []
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library.LLVMGetGlobalContext.restype = c_object_p
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# Memory buffer declarations
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library.LLVMCreateMemoryBufferWithContentsOfFile.argtypes = [c_char_p,
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POINTER(c_object_p), POINTER(c_char_p)]
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library.LLVMCreateMemoryBufferWithContentsOfFile.restype = bool
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library.LLVMGetBufferSize.argtypes = [MemoryBuffer]
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library.LLVMDisposeMemoryBuffer.argtypes = [MemoryBuffer]
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# Module declarations
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library.LLVMModuleCreateWithName.argtypes = [c_char_p]
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library.LLVMModuleCreateWithName.restype = c_object_p
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library.LLVMDisposeModule.argtypes = [Module]
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library.LLVMDisposeModule.restype = None
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library.LLVMGetDataLayout.argtypes = [Module]
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library.LLVMGetDataLayout.restype = c_char_p
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library.LLVMSetDataLayout.argtypes = [Module, c_char_p]
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library.LLVMSetDataLayout.restype = None
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library.LLVMGetTarget.argtypes = [Module]
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library.LLVMGetTarget.restype = c_char_p
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library.LLVMSetTarget.argtypes = [Module, c_char_p]
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library.LLVMSetTarget.restype = None
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library.LLVMDumpModule.argtypes = [Module]
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library.LLVMDumpModule.restype = None
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library.LLVMPrintModuleToFile.argtypes = [Module, c_char_p,
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POINTER(c_char_p)]
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library.LLVMPrintModuleToFile.restype = bool
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library.LLVMGetFirstFunction.argtypes = [Module]
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library.LLVMGetFirstFunction.restype = c_object_p
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library.LLVMGetLastFunction.argtypes = [Module]
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library.LLVMGetLastFunction.restype = c_object_p
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library.LLVMGetNextFunction.argtypes = [Function]
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library.LLVMGetNextFunction.restype = c_object_p
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library.LLVMGetPreviousFunction.argtypes = [Function]
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library.LLVMGetPreviousFunction.restype = c_object_p
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# Value declarations.
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library.LLVMGetValueName.argtypes = [Value]
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library.LLVMGetValueName.restype = c_char_p
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library.LLVMDumpValue.argtypes = [Value]
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library.LLVMDumpValue.restype = None
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library.LLVMGetOperand.argtypes = [Value, c_uint]
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library.LLVMGetOperand.restype = c_object_p
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library.LLVMSetOperand.argtypes = [Value, Value, c_uint]
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library.LLVMSetOperand.restype = None
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library.LLVMGetNumOperands.argtypes = [Value]
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library.LLVMGetNumOperands.restype = c_uint
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# Basic Block Declarations.
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library.LLVMGetFirstBasicBlock.argtypes = [Function]
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library.LLVMGetFirstBasicBlock.restype = c_object_p
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library.LLVMGetLastBasicBlock.argtypes = [Function]
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library.LLVMGetLastBasicBlock.restype = c_object_p
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library.LLVMGetNextBasicBlock.argtypes = [BasicBlock]
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library.LLVMGetNextBasicBlock.restype = c_object_p
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library.LLVMGetPreviousBasicBlock.argtypes = [BasicBlock]
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library.LLVMGetPreviousBasicBlock.restype = c_object_p
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library.LLVMGetFirstInstruction.argtypes = [BasicBlock]
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library.LLVMGetFirstInstruction.restype = c_object_p
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library.LLVMGetLastInstruction.argtypes = [BasicBlock]
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library.LLVMGetLastInstruction.restype = c_object_p
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library.LLVMBasicBlockAsValue.argtypes = [BasicBlock]
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library.LLVMBasicBlockAsValue.restype = c_object_p
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library.LLVMCountBasicBlocks.argtypes = [Function]
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library.LLVMCountBasicBlocks.restype = c_uint
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# Instruction Declarations.
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library.LLVMGetNextInstruction.argtypes = [Instruction]
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library.LLVMGetNextInstruction.restype = c_object_p
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library.LLVMGetPreviousInstruction.argtypes = [Instruction]
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library.LLVMGetPreviousInstruction.restype = c_object_p
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library.LLVMGetInstructionOpcode.argtypes = [Instruction]
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library.LLVMGetInstructionOpcode.restype = c_uint
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def register_enumerations():
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for name, value in enumerations.OpCodes:
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OpCode.register(name, value)
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def initialize_llvm():
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c = Context.GetGlobalContext()
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p = PassRegistry()
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lib.LLVMInitializeCore(p)
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lib.LLVMInitializeTransformUtils(p)
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lib.LLVMInitializeScalarOpts(p)
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lib.LLVMInitializeObjCARCOpts(p)
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lib.LLVMInitializeVectorization(p)
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lib.LLVMInitializeInstCombine(p)
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lib.LLVMInitializeIPO(p)
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lib.LLVMInitializeInstrumentation(p)
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lib.LLVMInitializeAnalysis(p)
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lib.LLVMInitializeIPA(p)
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lib.LLVMInitializeCodeGen(p)
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lib.LLVMInitializeTarget(p)
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register_library(lib)
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register_enumerations()
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initialize_llvm()
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