mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 00:12:50 +01:00
99 lines
2.7 KiB
Python
99 lines
2.7 KiB
Python
#===- core.py - Python LLVM Bindings -------------------------*- python -*--===#
|
|
#
|
|
# The LLVM Compiler Infrastructure
|
|
#
|
|
# This file is distributed under the University of Illinois Open Source
|
|
# License. See LICENSE.TXT for details.
|
|
#
|
|
#===------------------------------------------------------------------------===#
|
|
|
|
from .common import LLVMObject
|
|
from .common import c_object_p
|
|
from .common import get_library
|
|
|
|
from . import enumerations
|
|
|
|
from ctypes import POINTER
|
|
from ctypes import byref
|
|
from ctypes import c_char_p
|
|
|
|
__all__ = [
|
|
"lib",
|
|
"MemoryBuffer",
|
|
]
|
|
|
|
lib = get_library()
|
|
|
|
class OpCode(object):
|
|
"""Represents an individual OpCode enumeration."""
|
|
|
|
_value_map = {}
|
|
|
|
def __init__(self, name, value):
|
|
self.name = name
|
|
self.value = value
|
|
|
|
def __repr__(self):
|
|
return 'OpCode.%s' % self.name
|
|
|
|
@staticmethod
|
|
def from_value(value):
|
|
"""Obtain an OpCode instance from a numeric value."""
|
|
result = OpCode._value_map.get(value, None)
|
|
|
|
if result is None:
|
|
raise ValueError('Unknown OpCode: %d' % value)
|
|
|
|
return result
|
|
|
|
@staticmethod
|
|
def register(name, value):
|
|
"""Registers a new OpCode enumeration.
|
|
|
|
This is called by this module for each enumeration defined in
|
|
enumerations. You should not need to call this outside this module.
|
|
"""
|
|
if value in OpCode._value_map:
|
|
raise ValueError('OpCode value already registered: %d' % value)
|
|
|
|
opcode = OpCode(name, value)
|
|
OpCode._value_map[value] = opcode
|
|
setattr(OpCode, name, opcode)
|
|
|
|
class MemoryBuffer(LLVMObject):
|
|
"""Represents an opaque memory buffer."""
|
|
|
|
def __init__(self, filename=None):
|
|
"""Create a new memory buffer.
|
|
|
|
Currently, we support creating from the contents of a file at the
|
|
specified filename.
|
|
"""
|
|
if filename is None:
|
|
raise Exception("filename argument must be defined")
|
|
|
|
memory = c_object_p()
|
|
out = c_char_p(None)
|
|
|
|
result = lib.LLVMCreateMemoryBufferWithContentsOfFile(filename,
|
|
byref(memory), byref(out))
|
|
|
|
if result:
|
|
raise Exception("Could not create memory buffer: %s" % out.value)
|
|
|
|
LLVMObject.__init__(self, memory, disposer=lib.LLVMDisposeMemoryBuffer)
|
|
|
|
def register_library(library):
|
|
library.LLVMCreateMemoryBufferWithContentsOfFile.argtypes = [c_char_p,
|
|
POINTER(c_object_p), POINTER(c_char_p)]
|
|
library.LLVMCreateMemoryBufferWithContentsOfFile.restype = bool
|
|
|
|
library.LLVMDisposeMemoryBuffer.argtypes = [MemoryBuffer]
|
|
|
|
def register_enumerations():
|
|
for name, value in enumerations.OpCodes:
|
|
OpCode.register(name, value)
|
|
|
|
register_library(lib)
|
|
register_enumerations()
|