1 //===-- Target.cpp --------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the common infrastructure (including C bindings) for 10 // libLLVMTarget.a, which implements target information. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm-c/Target.h" 15 #include "llvm-c/Initialization.h" 16 #include "llvm/Analysis/TargetLibraryInfo.h" 17 #include "llvm/IR/DataLayout.h" 18 #include "llvm/IR/LLVMContext.h" 19 #include "llvm/IR/LegacyPassManager.h" 20 #include "llvm/IR/Value.h" 21 #include "llvm/InitializePasses.h" 22 #include <cstring> 23 24 using namespace llvm; 25 26 // Avoid including "llvm-c/Core.h" for compile time, fwd-declare this instead. 27 extern "C" LLVMContextRef LLVMGetGlobalContext(void); 28 29 inline TargetLibraryInfoImpl *unwrap(LLVMTargetLibraryInfoRef P) { 30 return reinterpret_cast<TargetLibraryInfoImpl*>(P); 31 } 32 33 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfoImpl *P) { 34 TargetLibraryInfoImpl *X = const_cast<TargetLibraryInfoImpl*>(P); 35 return reinterpret_cast<LLVMTargetLibraryInfoRef>(X); 36 } 37 38 void llvm::initializeTarget(PassRegistry &Registry) { 39 initializeTargetLibraryInfoWrapperPassPass(Registry); 40 initializeTargetTransformInfoWrapperPassPass(Registry); 41 } 42 43 void LLVMInitializeTarget(LLVMPassRegistryRef R) { 44 initializeTarget(*unwrap(R)); 45 } 46 47 LLVMTargetDataRef LLVMGetModuleDataLayout(LLVMModuleRef M) { 48 return wrap(&unwrap(M)->getDataLayout()); 49 } 50 51 void LLVMSetModuleDataLayout(LLVMModuleRef M, LLVMTargetDataRef DL) { 52 unwrap(M)->setDataLayout(*unwrap(DL)); 53 } 54 55 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) { 56 return wrap(new DataLayout(StringRep)); 57 } 58 59 void LLVMDisposeTargetData(LLVMTargetDataRef TD) { 60 delete unwrap(TD); 61 } 62 63 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI, 64 LLVMPassManagerRef PM) { 65 unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI))); 66 } 67 68 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) { 69 std::string StringRep = unwrap(TD)->getStringRepresentation(); 70 return strdup(StringRep.c_str()); 71 } 72 73 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) { 74 return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian; 75 } 76 77 unsigned LLVMPointerSize(LLVMTargetDataRef TD) { 78 return unwrap(TD)->getPointerSize(0); 79 } 80 81 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) { 82 return unwrap(TD)->getPointerSize(AS); 83 } 84 85 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) { 86 return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext()))); 87 } 88 89 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) { 90 return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext()), AS)); 91 } 92 93 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) { 94 return wrap(unwrap(TD)->getIntPtrType(*unwrap(C))); 95 } 96 97 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) { 98 return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS)); 99 } 100 101 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 102 return unwrap(TD)->getTypeSizeInBits(unwrap(Ty)); 103 } 104 105 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 106 return unwrap(TD)->getTypeStoreSize(unwrap(Ty)); 107 } 108 109 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 110 return unwrap(TD)->getTypeAllocSize(unwrap(Ty)); 111 } 112 113 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 114 return unwrap(TD)->getABITypeAlignment(unwrap(Ty)); 115 } 116 117 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 118 return unwrap(TD)->getABITypeAlignment(unwrap(Ty)); 119 } 120 121 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) { 122 return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty)); 123 } 124 125 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD, 126 LLVMValueRef GlobalVar) { 127 return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar)); 128 } 129 130 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy, 131 unsigned long long Offset) { 132 StructType *STy = unwrap<StructType>(StructTy); 133 return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset); 134 } 135 136 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy, 137 unsigned Element) { 138 StructType *STy = unwrap<StructType>(StructTy); 139 return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element); 140 } 141