summaryrefslogtreecommitdiff
path: root/lib/Target/TargetMachineC.cpp
blob: 20923c97ec8815c79a55b71d4becb84ec4def8c7 (plain)
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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
//===-- TargetMachine.cpp -------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the LLVM-C part of TargetMachine.h
//
//===----------------------------------------------------------------------===//

#include "llvm-c/TargetMachine.h"
#include "llvm-c/Core.h"
#include "llvm-c/Target.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include <cassert>
#include <cstdlib>
#include <cstring>

using namespace llvm;

inline TargetMachine *unwrap(LLVMTargetMachineRef P) {
  return reinterpret_cast<TargetMachine*>(P);
}
inline Target *unwrap(LLVMTargetRef P) {
  return reinterpret_cast<Target*>(P);
}
inline LLVMTargetMachineRef wrap(const TargetMachine *P) {
  return
    reinterpret_cast<LLVMTargetMachineRef>(const_cast<TargetMachine*>(P));
}
inline LLVMTargetRef wrap(const Target * P) {
  return reinterpret_cast<LLVMTargetRef>(const_cast<Target*>(P));
}

LLVMTargetRef LLVMGetFirstTarget() {
  if(TargetRegistry::begin() == TargetRegistry::end()) {
    return nullptr;
  }

  const Target* target = &*TargetRegistry::begin();
  return wrap(target);
}
LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T) {
  return wrap(unwrap(T)->getNext());
}

LLVMTargetRef LLVMGetTargetFromName(const char *Name) {
  StringRef NameRef = Name;
  for (TargetRegistry::iterator IT = TargetRegistry::begin(),
                                IE = TargetRegistry::end(); IT != IE; ++IT) {
    if (IT->getName() == NameRef)
      return wrap(&*IT);
  }
  
  return nullptr;
}

LLVMBool LLVMGetTargetFromTriple(const char* TripleStr, LLVMTargetRef *T,
                                 char **ErrorMessage) {
  std::string Error;
  
  *T = wrap(TargetRegistry::lookupTarget(TripleStr, Error));
  
  if (!*T) {
    if (ErrorMessage)
      *ErrorMessage = strdup(Error.c_str());

    return 1;
  }
  
  return 0;
}

const char * LLVMGetTargetName(LLVMTargetRef T) {
  return unwrap(T)->getName();
}

const char * LLVMGetTargetDescription(LLVMTargetRef T) {
  return unwrap(T)->getShortDescription();
}

LLVMBool LLVMTargetHasJIT(LLVMTargetRef T) {
  return unwrap(T)->hasJIT();
}

LLVMBool LLVMTargetHasTargetMachine(LLVMTargetRef T) {
  return unwrap(T)->hasTargetMachine();
}

LLVMBool LLVMTargetHasAsmBackend(LLVMTargetRef T) {
  return unwrap(T)->hasMCAsmBackend();
}

LLVMTargetMachineRef LLVMCreateTargetMachine(LLVMTargetRef T,
        const char* Triple, const char* CPU, const char* Features,
        LLVMCodeGenOptLevel Level, LLVMRelocMode Reloc,
        LLVMCodeModel CodeModel) {
  Reloc::Model RM;
  switch (Reloc){
    case LLVMRelocStatic:
      RM = Reloc::Static;
      break;
    case LLVMRelocPIC:
      RM = Reloc::PIC_;
      break;
    case LLVMRelocDynamicNoPic:
      RM = Reloc::DynamicNoPIC;
      break;
    default:
      RM = Reloc::Default;
      break;
  }

  CodeModel::Model CM = unwrap(CodeModel);

  CodeGenOpt::Level OL;
  switch (Level) {
    case LLVMCodeGenLevelNone:
      OL = CodeGenOpt::None;
      break;
    case LLVMCodeGenLevelLess:
      OL = CodeGenOpt::Less;
      break;
    case LLVMCodeGenLevelAggressive:
      OL = CodeGenOpt::Aggressive;
      break;
    default:
      OL = CodeGenOpt::Default;
      break;
  }

  TargetOptions opt;
  return wrap(unwrap(T)->createTargetMachine(Triple, CPU, Features, opt, RM,
    CM, OL));
}


void LLVMDisposeTargetMachine(LLVMTargetMachineRef T) {
  delete unwrap(T);
}

LLVMTargetRef LLVMGetTargetMachineTarget(LLVMTargetMachineRef T) {
  const Target* target = &(unwrap(T)->getTarget());
  return wrap(target);
}

char* LLVMGetTargetMachineTriple(LLVMTargetMachineRef T) {
  std::string StringRep = unwrap(T)->getTargetTriple();
  return strdup(StringRep.c_str());
}

char* LLVMGetTargetMachineCPU(LLVMTargetMachineRef T) {
  std::string StringRep = unwrap(T)->getTargetCPU();
  return strdup(StringRep.c_str());
}

char* LLVMGetTargetMachineFeatureString(LLVMTargetMachineRef T) {
  std::string StringRep = unwrap(T)->getTargetFeatureString();
  return strdup(StringRep.c_str());
}

LLVMTargetDataRef LLVMGetTargetMachineData(LLVMTargetMachineRef T) {
  return wrap(unwrap(T)->getDataLayout());
}

void LLVMSetTargetMachineAsmVerbosity(LLVMTargetMachineRef T,
                                      LLVMBool VerboseAsm) {
  unwrap(T)->setAsmVerbosityDefault(VerboseAsm);
}

static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
  formatted_raw_ostream &OS, LLVMCodeGenFileType codegen, char **ErrorMessage) {
  TargetMachine* TM = unwrap(T);
  Module* Mod = unwrap(M);

  PassManager pass;

  std::string error;

  const DataLayout* td = TM->getDataLayout();

  if (!td) {
    error = "No DataLayout in TargetMachine";
    *ErrorMessage = strdup(error.c_str());
    return true;
  }
  Mod->setDataLayout(td);
  pass.add(new DataLayoutPass(Mod));

  TargetMachine::CodeGenFileType ft;
  switch (codegen) {
    case LLVMAssemblyFile:
      ft = TargetMachine::CGFT_AssemblyFile;
      break;
    default:
      ft = TargetMachine::CGFT_ObjectFile;
      break;
  }
  if (TM->addPassesToEmitFile(pass, OS, ft)) {
    error = "TargetMachine can't emit a file of this type";
    *ErrorMessage = strdup(error.c_str());
    return true;
  }

  pass.run(*Mod);

  OS.flush();
  return false;
}

LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
  char* Filename, LLVMCodeGenFileType codegen, char** ErrorMessage) {
  std::string error;
  raw_fd_ostream dest(Filename, error, sys::fs::F_None);
  if (!error.empty()) {
    *ErrorMessage = strdup(error.c_str());
    return true;
  }
  formatted_raw_ostream destf(dest);
  bool Result = LLVMTargetMachineEmit(T, M, destf, codegen, ErrorMessage);
  dest.flush();
  return Result;
}

LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
  LLVMModuleRef M, LLVMCodeGenFileType codegen, char** ErrorMessage,
  LLVMMemoryBufferRef *OutMemBuf) {
  std::string CodeString;
  raw_string_ostream OStream(CodeString);
  formatted_raw_ostream Out(OStream);
  bool Result = LLVMTargetMachineEmit(T, M, Out, codegen, ErrorMessage);
  OStream.flush();

  std::string &Data = OStream.str();
  *OutMemBuf = LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.c_str(),
                                                     Data.length(), "");
  return Result;
}

char *LLVMGetDefaultTargetTriple(void) {
  return strdup(sys::getDefaultTargetTriple().c_str());
}

void LLVMAddAnalysisPasses(LLVMTargetMachineRef T, LLVMPassManagerRef PM) {
  unwrap(T)->addAnalysisPasses(*unwrap(PM));
}