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      1 /*===-- llvm-c/TargetMachine.h - Target Machine Library C Interface - 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 the Target and TargetMachine       *|
     11 |* classes, which can be used to generate assembly or object files.           *|
     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_TARGETMACHINE_H
     20 #define LLVM_C_TARGETMACHINE_H
     21 
     22 #include "llvm-c/Core.h"
     23 #include "llvm-c/Target.h"
     24 
     25 #ifdef __cplusplus
     26 extern "C" {
     27 #endif
     28 typedef struct LLVMTargetMachine *LLVMTargetMachineRef;
     29 typedef struct LLVMTarget *LLVMTargetRef;
     30 
     31 typedef enum {
     32     LLVMCodeGenLevelNone,
     33     LLVMCodeGenLevelLess,
     34     LLVMCodeGenLevelDefault,
     35     LLVMCodeGenLevelAggressive
     36 } LLVMCodeGenOptLevel;
     37 
     38 typedef enum {
     39     LLVMRelocDefault,
     40     LLVMRelocStatic,
     41     LLVMRelocPIC,
     42     LLVMRelocDynamicNoPic
     43 } LLVMRelocMode;
     44 
     45 typedef enum {
     46     LLVMCodeModelDefault,
     47     LLVMCodeModelJITDefault,
     48     LLVMCodeModelSmall,
     49     LLVMCodeModelKernel,
     50     LLVMCodeModelMedium,
     51     LLVMCodeModelLarge
     52 } LLVMCodeModel;
     53 
     54 typedef enum {
     55     LLVMAssemblyFile,
     56     LLVMObjectFile
     57 } LLVMCodeGenFileType;
     58 
     59 /** Returns the first llvm::Target in the registered targets list. */
     60 LLVMTargetRef LLVMGetFirstTarget();
     61 /** Returns the next llvm::Target given a previous one (or null if there's none) */
     62 LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T);
     63 
     64 /*===-- Target ------------------------------------------------------------===*/
     65 /** Returns the name of a target. See llvm::Target::getName */
     66 const char *LLVMGetTargetName(LLVMTargetRef T);
     67 
     68 /** Returns the description  of a target. See llvm::Target::getDescription */
     69 const char *LLVMGetTargetDescription(LLVMTargetRef T);
     70 
     71 /** Returns if the target has a JIT */
     72 LLVMBool LLVMTargetHasJIT(LLVMTargetRef T);
     73 
     74 /** Returns if the target has a TargetMachine associated */
     75 LLVMBool LLVMTargetHasTargetMachine(LLVMTargetRef T);
     76 
     77 /** Returns if the target as an ASM backend (required for emitting output) */
     78 LLVMBool LLVMTargetHasAsmBackend(LLVMTargetRef T);
     79 
     80 /*===-- Target Machine ----------------------------------------------------===*/
     81 /** Creates a new llvm::TargetMachine. See llvm::Target::createTargetMachine */
     82 LLVMTargetMachineRef LLVMCreateTargetMachine(LLVMTargetRef T, char *Triple,
     83   char *CPU, char *Features, LLVMCodeGenOptLevel Level, LLVMRelocMode Reloc,
     84   LLVMCodeModel CodeModel);
     85 
     86 /** Dispose the LLVMTargetMachineRef instance generated by
     87   LLVMCreateTargetMachine. */
     88 void LLVMDisposeTargetMachine(LLVMTargetMachineRef T);
     89 
     90 /** Returns the Target used in a TargetMachine */
     91 LLVMTargetRef LLVMGetTargetMachineTarget(LLVMTargetMachineRef T);
     92 
     93 /** Returns the triple used creating this target machine. See
     94   llvm::TargetMachine::getTriple. The result needs to be disposed with
     95   LLVMDisposeMessage. */
     96 char *LLVMGetTargetMachineTriple(LLVMTargetMachineRef T);
     97 
     98 /** Returns the cpu used creating this target machine. See
     99   llvm::TargetMachine::getCPU. The result needs to be disposed with
    100   LLVMDisposeMessage. */
    101 char *LLVMGetTargetMachineCPU(LLVMTargetMachineRef T);
    102 
    103 /** Returns the feature string used creating this target machine. See
    104   llvm::TargetMachine::getFeatureString. The result needs to be disposed with
    105   LLVMDisposeMessage. */
    106 char *LLVMGetTargetMachineFeatureString(LLVMTargetMachineRef T);
    107 
    108 /** Returns the llvm::DataLayout used for this llvm:TargetMachine. */
    109 LLVMTargetDataRef LLVMGetTargetMachineData(LLVMTargetMachineRef T);
    110 
    111 /** Emits an asm or object file for the given module to the filename. This
    112   wraps several c++ only classes (among them a file stream). Returns any
    113   error in ErrorMessage. Use LLVMDisposeMessage to dispose the message. */
    114 LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
    115   char *Filename, LLVMCodeGenFileType codegen, char **ErrorMessage);
    116 
    117 
    118 
    119 
    120 #ifdef __cplusplus
    121 }
    122 
    123 namespace llvm {
    124   class TargetMachine;
    125   class Target;
    126 
    127   inline TargetMachine *unwrap(LLVMTargetMachineRef P) {
    128     return reinterpret_cast<TargetMachine*>(P);
    129   }
    130   inline Target *unwrap(LLVMTargetRef P) {
    131     return reinterpret_cast<Target*>(P);
    132   }
    133   inline LLVMTargetMachineRef wrap(const TargetMachine *P) {
    134     return reinterpret_cast<LLVMTargetMachineRef>(
    135       const_cast<TargetMachine*>(P));
    136   }
    137   inline LLVMTargetRef wrap(const Target * P) {
    138     return reinterpret_cast<LLVMTargetRef>(const_cast<Target*>(P));
    139   }
    140 }
    141 #endif
    142 
    143 #endif
    144