lib/ExecutionEngine/ExecutionEngineBindings.cpp

   1 //===-- ExecutionEngineBindings.cpp - C bindings for EEs ------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines the C bindings for the ExecutionEngine library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #define DEBUG_TYPE "jit"
  15 #include "llvm-c/ExecutionEngine.h"
  16 #include "llvm/ExecutionEngine/GenericValue.h"
  17 #include "llvm/ExecutionEngine/ExecutionEngine.h"
  18 #include "llvm/Support/ErrorHandling.h"
  19 #include <cstring>
  20
  21 using namespace llvm;
  22
  23 /*===-- Operations on generic values --------------------------------------===*/
  24
  25 LLVMGenericValueRef LLVMCreateGenericValueOfInt(LLVMTypeRef Ty,
  26                                                 unsigned long long N,
  27                                                 int IsSigned) {
  28   GenericValue *GenVal = new GenericValue();
  29   GenVal->IntVal = APInt(unwrap<IntegerType>(Ty)->getBitWidth(), N, IsSigned);
  30   return wrap(GenVal);
  31 }
  32
  33 LLVMGenericValueRef LLVMCreateGenericValueOfPointer(void *P) {
  34   GenericValue *GenVal = new GenericValue();
  35   GenVal->PointerVal = P;
  36   return wrap(GenVal);
  37 }
  38
  39 LLVMGenericValueRef LLVMCreateGenericValueOfFloat(LLVMTypeRef TyRef, double N) {
  40   GenericValue *GenVal = new GenericValue();
  41   switch (unwrap(TyRef)->getTypeID()) {
  42   case Type::FloatTyID:
  43     GenVal->FloatVal = N;
  44     break;
  45   case Type::DoubleTyID:
  46     GenVal->DoubleVal = N;
  47     break;
  48   default:
  49     llvm_unreachable("LLVMGenericValueToFloat supports only float and double.");
  50   }
  51   return wrap(GenVal);
  52 }
  53
  54 unsigned LLVMGenericValueIntWidth(LLVMGenericValueRef GenValRef) {
  55   return unwrap(GenValRef)->IntVal.getBitWidth();
  56 }
  57
  58 unsigned long long LLVMGenericValueToInt(LLVMGenericValueRef GenValRef,
  59                                          int IsSigned) {
  60   GenericValue *GenVal = unwrap(GenValRef);
  61   if (IsSigned)
  62     return GenVal->IntVal.getSExtValue();
  63   else
  64     return GenVal->IntVal.getZExtValue();
  65 }
  66
  67 void *LLVMGenericValueToPointer(LLVMGenericValueRef GenVal) {
  68   return unwrap(GenVal)->PointerVal;
  69 }
  70
  71 double LLVMGenericValueToFloat(LLVMTypeRef TyRef, LLVMGenericValueRef GenVal) {
  72   switch (unwrap(TyRef)->getTypeID()) {
  73   case Type::FloatTyID:
  74     return unwrap(GenVal)->FloatVal;
  75   case Type::DoubleTyID:
  76     return unwrap(GenVal)->DoubleVal;
  77   default:
  78     llvm_unreachable("LLVMGenericValueToFloat supports only float and double.");
  79     break;
  80   }
  81   return 0; // Not reached
  82 }
  83
  84 void LLVMDisposeGenericValue(LLVMGenericValueRef GenVal) {
  85   delete unwrap(GenVal);
  86 }
  87
  88 /*===-- Operations on execution engines -----------------------------------===*/
  89
  90 int LLVMCreateExecutionEngine(LLVMExecutionEngineRef *OutEE,
  91                               LLVMModuleProviderRef MP,
  92                               char **OutError) {
  93   std::string Error;
  94   EngineBuilder builder(unwrap(MP));
  95   builder.setEngineKind(EngineKind::Either)
  96          .setErrorStr(&Error);
  97   if (ExecutionEngine *EE = builder.create()){
  98     *OutEE = wrap(EE);
  99     return 0;
 100   }
 101   *OutError = strdup(Error.c_str());
 102   return 1;
 103 }
 104
 105 int LLVMCreateInterpreter(LLVMExecutionEngineRef *OutInterp,
 106                           LLVMModuleProviderRef MP,
 107                           char **OutError) {
 108   std::string Error;
 109   EngineBuilder builder(unwrap(MP));
 110   builder.setEngineKind(EngineKind::Interpreter)
 111          .setErrorStr(&Error);
 112   if (ExecutionEngine *Interp = builder.create()) {
 113     *OutInterp = wrap(Interp);
 114     return 0;
 115   }
 116   *OutError = strdup(Error.c_str());
 117   return 1;
 118 }
 119
 120 int LLVMCreateJITCompiler(LLVMExecutionEngineRef *OutJIT,
 121                           LLVMModuleProviderRef MP,
 122                           unsigned OptLevel,
 123                           char **OutError) {
 124   std::string Error;
 125   EngineBuilder builder(unwrap(MP));
 126   builder.setEngineKind(EngineKind::JIT)
 127          .setErrorStr(&Error)
 128          .setOptLevel((CodeGenOpt::Level)OptLevel);
 129   if (ExecutionEngine *JIT = builder.create()) {
 130     *OutJIT = wrap(JIT);
 131     return 0;
 132   }
 133   *OutError = strdup(Error.c_str());
 134   return 1;
 135 }
 136
 137 void LLVMDisposeExecutionEngine(LLVMExecutionEngineRef EE) {
 138   delete unwrap(EE);
 139 }
 140
 141 void LLVMRunStaticConstructors(LLVMExecutionEngineRef EE) {
 142   unwrap(EE)->runStaticConstructorsDestructors(false);
 143 }
 144
 145 void LLVMRunStaticDestructors(LLVMExecutionEngineRef EE) {
 146   unwrap(EE)->runStaticConstructorsDestructors(true);
 147 }
 148
 149 int LLVMRunFunctionAsMain(LLVMExecutionEngineRef EE, LLVMValueRef F,
 150                           unsigned ArgC, const char * const *ArgV,
 151                           const char * const *EnvP) {
 152   std::vector<std::string> ArgVec;
 153   for (unsigned I = 0; I != ArgC; ++I)
 154     ArgVec.push_back(ArgV[I]);
 155
 156   return unwrap(EE)->runFunctionAsMain(unwrap<Function>(F), ArgVec, EnvP);
 157 }
 158
 159 LLVMGenericValueRef LLVMRunFunction(LLVMExecutionEngineRef EE, LLVMValueRef F,
 160                                     unsigned NumArgs,
 161                                     LLVMGenericValueRef *Args) {
 162   std::vector<GenericValue> ArgVec;
 163   ArgVec.reserve(NumArgs);
 164   for (unsigned I = 0; I != NumArgs; ++I)
 165     ArgVec.push_back(*unwrap(Args[I]));
 166
 167   GenericValue *Result = new GenericValue();
 168   *Result = unwrap(EE)->runFunction(unwrap<Function>(F), ArgVec);
 169   return wrap(Result);
 170 }
 171
 172 void LLVMFreeMachineCodeForFunction(LLVMExecutionEngineRef EE, LLVMValueRef F) {
 173   unwrap(EE)->freeMachineCodeForFunction(unwrap<Function>(F));
 174 }
 175
 176 void LLVMAddModuleProvider(LLVMExecutionEngineRef EE, LLVMModuleProviderRef MP){
 177   unwrap(EE)->addModuleProvider(unwrap(MP));
 178 }
 179
 180 int LLVMRemoveModuleProvider(LLVMExecutionEngineRef EE,
 181                              LLVMModuleProviderRef MP,
 182                              LLVMModuleRef *OutMod, char **OutError) {
 183   std::string Error;
 184   if (Module *Gone = unwrap(EE)->removeModuleProvider(unwrap(MP), &Error)) {
 185     *OutMod = wrap(Gone);
 186     return 0;
 187   }
 188   if (OutError)
 189     *OutError = strdup(Error.c_str());
 190   return 1;
 191 }
 192
 193 int LLVMFindFunction(LLVMExecutionEngineRef EE, const char *Name,
 194                      LLVMValueRef *OutFn) {
 195   if (Function *F = unwrap(EE)->FindFunctionNamed(Name)) {
 196     *OutFn = wrap(F);
 197     return 0;
 198   }
 199   return 1;
 200 }
 201
 202 LLVMTargetDataRef LLVMGetExecutionEngineTargetData(LLVMExecutionEngineRef EE) {
 203   return wrap(unwrap(EE)->getTargetData());
 204 }
 205
 206 void LLVMAddGlobalMapping(LLVMExecutionEngineRef EE, LLVMValueRef Global,
 207                           void* Addr) {
 208   unwrap(EE)->addGlobalMapping(unwrap<GlobalValue>(Global), Addr);
 209 }
 210
 211 void *LLVMGetPointerToGlobal(LLVMExecutionEngineRef EE, LLVMValueRef Global) {
 212   return unwrap(EE)->getPointerToGlobal(unwrap<GlobalValue>(Global));
 213 }