/*===-- llvm-c/TargetMachine.h - Target Machine Library C Interface - C++ -*-=*\
|*                                                                            *|
|*                     The LLVM Compiler Infrastructure                       *|
|*                                                                            *|
|* This file is distributed under the University of Illinois Open Source      *|
|* License. See LICENSE.TXT for details.                                      *|
|*                                                                            *|
|*===----------------------------------------------------------------------===*|
|*                                                                            *|
|* This header declares the C interface to the Target and TargetMachine       *|
|* classes, which can be used to generate assembly or object files.           *|
|*                                                                            *|
|* Many exotic languages can interoperate with C code but have a harder time  *|
|* with C++ due to name mangling. So in addition to C, this interface enables *|
|* tools written in such languages.                                           *|
|*                                                                            *|
\*===----------------------------------------------------------------------===*/

#ifndef LLVM_C_TARGETMACHINE_H
#define LLVM_C_TARGETMACHINE_H

#include "llvm-c/Core.h"
#include "llvm-c/Target.h"

#ifdef __cplusplus
extern "C" {
#endif
typedef struct LLVMTargetMachine *LLVMTargetMachineRef;
typedef struct LLVMTarget *LLVMTargetRef;

typedef enum {
    LLVMCodeGenLevelNone,
    LLVMCodeGenLevelLess,
    LLVMCodeGenLevelDefault,
    LLVMCodeGenLevelAggressive
} LLVMCodeGenOptLevel;

typedef enum {
    LLVMRelocDefault,
    LLVMRelocStatic,
    LLVMRelocPIC,
    LLVMRelocDynamicNoPic
} LLVMRelocMode;

typedef enum {
    LLVMCodeModelDefault,
    LLVMCodeModelJITDefault,
    LLVMCodeModelSmall,
    LLVMCodeModelKernel,
    LLVMCodeModelMedium,
    LLVMCodeModelLarge
} LLVMCodeModel;

typedef enum {
    LLVMAssemblyFile,
    LLVMObjectFile
} LLVMCodeGenFileType;

/** Returns the first llvm::Target in the registered targets list. */
LLVMTargetRef LLVMGetFirstTarget();
/** Returns the next llvm::Target given a previous one (or null if there's none) */
LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T);

/*===-- Target ------------------------------------------------------------===*/
/** Returns the name of a target. See llvm::Target::getName */
const char *LLVMGetTargetName(LLVMTargetRef T);

/** Returns the description  of a target. See llvm::Target::getDescription */
const char *LLVMGetTargetDescription(LLVMTargetRef T);

/** Returns if the target has a JIT */
LLVMBool LLVMTargetHasJIT(LLVMTargetRef T);

/** Returns if the target has a TargetMachine associated */
LLVMBool LLVMTargetHasTargetMachine(LLVMTargetRef T);

/** Returns if the target as an ASM backend (required for emitting output) */
LLVMBool LLVMTargetHasAsmBackend(LLVMTargetRef T);

/*===-- Target Machine ----------------------------------------------------===*/
/** Creates a new llvm::TargetMachine. See llvm::Target::createTargetMachine */
LLVMTargetMachineRef LLVMCreateTargetMachine(LLVMTargetRef T, char *Triple,
  char *CPU, char *Features, LLVMCodeGenOptLevel Level, LLVMRelocMode Reloc,
  LLVMCodeModel CodeModel);

/** Dispose the LLVMTargetMachineRef instance generated by
  LLVMCreateTargetMachine. */
void LLVMDisposeTargetMachine(LLVMTargetMachineRef T);

/** Returns the Target used in a TargetMachine */
LLVMTargetRef LLVMGetTargetMachineTarget(LLVMTargetMachineRef T);

/** Returns the triple used creating this target machine. See
  llvm::TargetMachine::getTriple. The result needs to be disposed with
  LLVMDisposeMessage. */
char *LLVMGetTargetMachineTriple(LLVMTargetMachineRef T);

/** Returns the cpu used creating this target machine. See
  llvm::TargetMachine::getCPU. The result needs to be disposed with
  LLVMDisposeMessage. */
char *LLVMGetTargetMachineCPU(LLVMTargetMachineRef T);

/** Returns the feature string used creating this target machine. See
  llvm::TargetMachine::getFeatureString. The result needs to be disposed with
  LLVMDisposeMessage. */
char *LLVMGetTargetMachineFeatureString(LLVMTargetMachineRef T);

/** Returns the llvm::DataLayout used for this llvm:TargetMachine. */
LLVMTargetDataRef LLVMGetTargetMachineData(LLVMTargetMachineRef T);

/** Emits an asm or object file for the given module to the filename. This
  wraps several c++ only classes (among them a file stream). Returns any
  error in ErrorMessage. Use LLVMDisposeMessage to dispose the message. */
LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
  char *Filename, LLVMCodeGenFileType codegen, char **ErrorMessage);

/** Compile the LLVM IR stored in \p M and store the result in \p OutMemBuf. */
LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T, LLVMModuleRef M,
  LLVMCodeGenFileType codegen, char** ErrorMessage, LLVMMemoryBufferRef *OutMemBuf);



#ifdef __cplusplus
}

namespace llvm {
  class TargetMachine;
  class Target;

  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));
  }
}
#endif

#endif