include/llvm-c/ExecutionEngine.h

   1 /*===-- llvm-c/ExecutionEngine.h - ExecutionEngine Lib C Iface --*- C++ -*-===*\
   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 header declares the C interface to libLLVMExecutionEngine.o, which    *|
  11 |* implements various analyses of the LLVM IR.                                *|
  12 |*                                                                            *|
  13 |* Many exotic languages can interoperate with C code but have a harder time  *|
  14 |* with C++ due to name mangling. So in addition to C, this interface enables *|
  15 |* tools written in such languages.                                           *|
  16 |*                                                                            *|
  17 \*===----------------------------------------------------------------------===*/
  18
  19 #ifndef LLVM_C_EXECUTIONENGINE_H
  20 #define LLVM_C_EXECUTIONENGINE_H
  21
  22 #include "llvm-c/Types.h"
  23 #include "llvm-c/Target.h"
  24 #include "llvm-c/TargetMachine.h"
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 /**
  31  * @defgroup LLVMCExecutionEngine Execution Engine
  32  * @ingroup LLVMC
  33  *
  34  * @{
  35  */
  36
  37 void LLVMLinkInMCJIT(void);
  38 void LLVMLinkInInterpreter(void);
  39
  40 typedef struct LLVMOpaqueGenericValue *LLVMGenericValueRef;
  41 typedef struct LLVMOpaqueExecutionEngine *LLVMExecutionEngineRef;
  42 typedef struct LLVMOpaqueMCJITMemoryManager *LLVMMCJITMemoryManagerRef;
  43
  44 struct LLVMMCJITCompilerOptions {
  45   unsigned OptLevel;
  46   LLVMCodeModel CodeModel;
  47   LLVMBool NoFramePointerElim;
  48   LLVMBool EnableFastISel;
  49   LLVMMCJITMemoryManagerRef MCJMM;
  50 };
  51
  52 /*===-- Operations on generic values --------------------------------------===*/
  53
  54 LLVMGenericValueRef LLVMCreateGenericValueOfInt(LLVMTypeRef Ty,
  55                                                 unsigned long long N,
  56                                                 LLVMBool IsSigned);
  57
  58 LLVMGenericValueRef LLVMCreateGenericValueOfPointer(void *P);
  59
  60 LLVMGenericValueRef LLVMCreateGenericValueOfFloat(LLVMTypeRef Ty, double N);
  61
  62 unsigned LLVMGenericValueIntWidth(LLVMGenericValueRef GenValRef);
  63
  64 unsigned long long LLVMGenericValueToInt(LLVMGenericValueRef GenVal,
  65                                          LLVMBool IsSigned);
  66
  67 void *LLVMGenericValueToPointer(LLVMGenericValueRef GenVal);
  68
  69 double LLVMGenericValueToFloat(LLVMTypeRef TyRef, LLVMGenericValueRef GenVal);
  70
  71 void LLVMDisposeGenericValue(LLVMGenericValueRef GenVal);
  72
  73 /*===-- Operations on execution engines -----------------------------------===*/
  74
  75 LLVMBool LLVMCreateExecutionEngineForModule(LLVMExecutionEngineRef *OutEE,
  76                                             LLVMModuleRef M,
  77                                             char **OutError);
  78
  79 LLVMBool LLVMCreateInterpreterForModule(LLVMExecutionEngineRef *OutInterp,
  80                                         LLVMModuleRef M,
  81                                         char **OutError);
  82
  83 LLVMBool LLVMCreateJITCompilerForModule(LLVMExecutionEngineRef *OutJIT,
  84                                         LLVMModuleRef M,
  85                                         unsigned OptLevel,
  86                                         char **OutError);
  87
  88 void LLVMInitializeMCJITCompilerOptions(
  89   struct LLVMMCJITCompilerOptions *Options, size_t SizeOfOptions);
  90
  91 /**
  92  * Create an MCJIT execution engine for a module, with the given options. It is
  93  * the responsibility of the caller to ensure that all fields in Options up to
  94  * the given SizeOfOptions are initialized. It is correct to pass a smaller
  95  * value of SizeOfOptions that omits some fields. The canonical way of using
  96  * this is:
  97  *
  98  * LLVMMCJITCompilerOptions options;
  99  * LLVMInitializeMCJITCompilerOptions(&options, sizeof(options));
 100  * ... fill in those options you care about
 101  * LLVMCreateMCJITCompilerForModule(&jit, mod, &options, sizeof(options),
 102  *                                  &error);
 103  *
 104  * Note that this is also correct, though possibly suboptimal:
 105  *
 106  * LLVMCreateMCJITCompilerForModule(&jit, mod, 0, 0, &error);
 107  */
 108 LLVMBool LLVMCreateMCJITCompilerForModule(
 109   LLVMExecutionEngineRef *OutJIT, LLVMModuleRef M,
 110   struct LLVMMCJITCompilerOptions *Options, size_t SizeOfOptions,
 111   char **OutError);
 112
 113 void LLVMDisposeExecutionEngine(LLVMExecutionEngineRef EE);
 114
 115 void LLVMRunStaticConstructors(LLVMExecutionEngineRef EE);
 116
 117 void LLVMRunStaticDestructors(LLVMExecutionEngineRef EE);
 118
 119 int LLVMRunFunctionAsMain(LLVMExecutionEngineRef EE, LLVMValueRef F,
 120                           unsigned ArgC, const char * const *ArgV,
 121                           const char * const *EnvP);
 122
 123 LLVMGenericValueRef LLVMRunFunction(LLVMExecutionEngineRef EE, LLVMValueRef F,
 124                                     unsigned NumArgs,
 125                                     LLVMGenericValueRef *Args);
 126
 127 void LLVMFreeMachineCodeForFunction(LLVMExecutionEngineRef EE, LLVMValueRef F);
 128
 129 void LLVMAddModule(LLVMExecutionEngineRef EE, LLVMModuleRef M);
 130
 131 LLVMBool LLVMRemoveModule(LLVMExecutionEngineRef EE, LLVMModuleRef M,
 132                           LLVMModuleRef *OutMod, char **OutError);
 133
 134 LLVMBool LLVMFindFunction(LLVMExecutionEngineRef EE, const char *Name,
 135                           LLVMValueRef *OutFn);
 136
 137 void *LLVMRecompileAndRelinkFunction(LLVMExecutionEngineRef EE,
 138                                      LLVMValueRef Fn);
 139
 140 LLVMTargetDataRef LLVMGetExecutionEngineTargetData(LLVMExecutionEngineRef EE);
 141 LLVMTargetMachineRef
 142 LLVMGetExecutionEngineTargetMachine(LLVMExecutionEngineRef EE);
 143
 144 void LLVMAddGlobalMapping(LLVMExecutionEngineRef EE, LLVMValueRef Global,
 145                           void* Addr);
 146
 147 void *LLVMGetPointerToGlobal(LLVMExecutionEngineRef EE, LLVMValueRef Global);
 148
 149 uint64_t LLVMGetGlobalValueAddress(LLVMExecutionEngineRef EE, const char *Name);
 150
 151 uint64_t LLVMGetFunctionAddress(LLVMExecutionEngineRef EE, const char *Name);
 152
 153 /*===-- Operations on memory managers -------------------------------------===*/
 154
 155 typedef uint8_t *(*LLVMMemoryManagerAllocateCodeSectionCallback)(
 156   void *Opaque, uintptr_t Size, unsigned Alignment, unsigned SectionID,
 157   const char *SectionName);
 158 typedef uint8_t *(*LLVMMemoryManagerAllocateDataSectionCallback)(
 159   void *Opaque, uintptr_t Size, unsigned Alignment, unsigned SectionID,
 160   const char *SectionName, LLVMBool IsReadOnly);
 161 typedef LLVMBool (*LLVMMemoryManagerFinalizeMemoryCallback)(
 162   void *Opaque, char **ErrMsg);
 163 typedef void (*LLVMMemoryManagerDestroyCallback)(void *Opaque);
 164
 165 /**
 166  * Create a simple custom MCJIT memory manager. This memory manager can
 167  * intercept allocations in a module-oblivious way. This will return NULL
 168  * if any of the passed functions are NULL.
 169  *
 170  * @param Opaque An opaque client object to pass back to the callbacks.
 171  * @param AllocateCodeSection Allocate a block of memory for executable code.
 172  * @param AllocateDataSection Allocate a block of memory for data.
 173  * @param FinalizeMemory Set page permissions and flush cache. Return 0 on
 174  *   success, 1 on error.
 175  */
 176 LLVMMCJITMemoryManagerRef LLVMCreateSimpleMCJITMemoryManager(
 177   void *Opaque,
 178   LLVMMemoryManagerAllocateCodeSectionCallback AllocateCodeSection,
 179   LLVMMemoryManagerAllocateDataSectionCallback AllocateDataSection,
 180   LLVMMemoryManagerFinalizeMemoryCallback FinalizeMemory,
 181   LLVMMemoryManagerDestroyCallback Destroy);
 182
 183 void LLVMDisposeMCJITMemoryManager(LLVMMCJITMemoryManagerRef MM);
 184
 185 /**
 186  * @}
 187  */
 188
 189 #ifdef __cplusplus
 190 }
 191 #endif /* defined(__cplusplus) */
 192
 193 #endif