1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
#===- 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",
"Context",
"PassRegistry"
]
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 __len__(self):
return lib.LLVMGetBufferSize(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.LLVMInitializeIPO.argtypes = [PassRegistry]
library.LLVMInitializeIPO.restype = None
library.LLVMInitializeInstrumentation.argtypes = [PassRegistry]
library.LLVMInitializeInstrumentation.restype = None
library.LLVMInitializeAnalysis.argtypes = [PassRegistry]
library.LLVMInitializeAnalysis.restype = None
library.LLVMInitializeIPA.argtypes = [PassRegistry]
library.LLVMInitializeIPA.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]
def register_enumerations():
for name, value in enumerations.OpCodes:
OpCode.register(name, value)
def initialize_llvm():
c = 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.LLVMInitializeIPA(p)
lib.LLVMInitializeCodeGen(p)
lib.LLVMInitializeTarget(p)
register_library(lib)
register_enumerations()
initialize_llvm()
|
