lib/Target/Target.cpp

   1 //===-- Target.cpp --------------------------------------------------------===//
   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 implements the common infrastructure (including C bindings) for
  11 // libLLVMTarget.a, which implements target information.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm-c/Target.h"
  16 #include "llvm-c/Initialization.h"
  17 #include "llvm/IR/DataLayout.h"
  18 #include "llvm/IR/LLVMContext.h"
  19 #include "llvm/IR/Value.h"
  20 #include "llvm/InitializePasses.h"
  21 #include "llvm/PassManager.h"
  22 #include "llvm/Target/TargetLibraryInfo.h"
  23 #include <cstring>
  24
  25 using namespace llvm;
  26
  27 inline DataLayout *unwrap(LLVMTargetDataRef P) {
  28   return reinterpret_cast<DataLayout*>(P);
  29 }
  30
  31 inline LLVMTargetDataRef wrap(const DataLayout *P) {
  32   return reinterpret_cast<LLVMTargetDataRef>(const_cast<DataLayout*>(P));
  33 }
  34
  35 inline TargetLibraryInfo *unwrap(LLVMTargetLibraryInfoRef P) {
  36   return reinterpret_cast<TargetLibraryInfo*>(P);
  37 }
  38
  39 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfo *P) {
  40   TargetLibraryInfo *X = const_cast<TargetLibraryInfo*>(P);
  41   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
  42 }
  43
  44 void llvm::initializeTarget(PassRegistry &Registry) {
  45   initializeDataLayoutPass(Registry);
  46   initializeTargetLibraryInfoPass(Registry);
  47 }
  48
  49 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
  50   initializeTarget(*unwrap(R));
  51 }
  52
  53 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
  54   return wrap(new DataLayout(StringRep));
  55 }
  56
  57 void LLVMAddTargetData(LLVMTargetDataRef TD, LLVMPassManagerRef PM) {
  58   unwrap(PM)->add(new DataLayout(*unwrap(TD)));
  59 }
  60
  61 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
  62                               LLVMPassManagerRef PM) {
  63   unwrap(PM)->add(new TargetLibraryInfo(*unwrap(TLI)));
  64 }
  65
  66 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
  67   std::string StringRep = unwrap(TD)->getStringRepresentation();
  68   return strdup(StringRep.c_str());
  69 }
  70
  71 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
  72   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
  73 }
  74
  75 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
  76   return unwrap(TD)->getPointerSize(0);
  77 }
  78
  79 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
  80   return unwrap(TD)->getPointerSize(AS);
  81 }
  82
  83 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
  84   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
  85 }
  86
  87 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
  88   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
  89 }
  90
  91 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
  92   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
  93 }
  94
  95 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
  96   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
  97 }
  98
  99 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 100   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
 101 }
 102
 103 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 104   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
 105 }
 106
 107 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 108   return unwrap(TD)->getCallFrameTypeAlignment(unwrap(Ty));
 109 }
 110
 111 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 112   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
 113 }
 114
 115 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
 116                                         LLVMValueRef GlobalVar) {
 117   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
 118 }
 119
 120 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 121                              unsigned long long Offset) {
 122   StructType *STy = unwrap<StructType>(StructTy);
 123   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
 124 }
 125
 126 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 127                                        unsigned Element) {
 128   StructType *STy = unwrap<StructType>(StructTy);
 129   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
 130 }
 131
 132 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
 133   delete unwrap(TD);
 134 }