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(*unwrap(TD))); 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 } 137