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 TargetLibraryInfo *unwrap(LLVMTargetLibraryInfoRef P) {
  28   return reinterpret_cast<TargetLibraryInfo*>(P);
  29 }
  30
  31 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfo *P) {
  32   TargetLibraryInfo *X = const_cast<TargetLibraryInfo*>(P);
  33   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
  34 }
  35
  36 void llvm::initializeTarget(PassRegistry &Registry) {
  37   initializeDataLayoutPassPass(Registry);
  38   initializeTargetLibraryInfoPass(Registry);
  39 }
  40
  41 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
  42   initializeTarget(*unwrap(R));
  43 }
  44
  45 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
  46   return wrap(new DataLayout(StringRep));
  47 }
  48
  49 void LLVMAddTargetData(LLVMTargetDataRef TD, LLVMPassManagerRef PM) {
  50   // The DataLayoutPass must now be in sync with the module. Unfortunatelly we
  51   // cannot enforce that from the C api.
  52   unwrap(PM)->add(new DataLayoutPass());
  53 }
  54
  55 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
  56                               LLVMPassManagerRef PM) {
  57   unwrap(PM)->add(new TargetLibraryInfo(*unwrap(TLI)));
  58 }
  59
  60 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
  61   std::string StringRep = unwrap(TD)->getStringRepresentation();
  62   return strdup(StringRep.c_str());
  63 }
  64
  65 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
  66   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
  67 }
  68
  69 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
  70   return unwrap(TD)->getPointerSize(0);
  71 }
  72
  73 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
  74   return unwrap(TD)->getPointerSize(AS);
  75 }
  76
  77 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
  78   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
  79 }
  80
  81 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
  82   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
  83 }
  84
  85 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
  86   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
  87 }
  88
  89 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
  90   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
  91 }
  92
  93 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
  94   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
  95 }
  96
  97 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
  98   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
  99 }
 100
 101 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 102   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
 103 }
 104
 105 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 106   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
 107 }
 108
 109 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 110   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
 111 }
 112
 113 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 114   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
 115 }
 116
 117 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
 118                                         LLVMValueRef GlobalVar) {
 119   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
 120 }
 121
 122 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 123                              unsigned long long Offset) {
 124   StructType *STy = unwrap<StructType>(StructTy);
 125   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
 126 }
 127
 128 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 129                                        unsigned Element) {
 130   StructType *STy = unwrap<StructType>(StructTy);
 131   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
 132 }
 133
 134 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
 135   delete unwrap(TD);
 136 }