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/IR/LegacyPassManager.h"
22 #include "llvm/Analysis/TargetLibraryInfo.h"
23 #include <cstring>
24 
25 using namespace llvm;
26 
27 inline TargetLibraryInfoImpl *unwrap(LLVMTargetLibraryInfoRef P) {
28   return reinterpret_cast<TargetLibraryInfoImpl*>(P);
29 }
30 
31 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfoImpl *P) {
32   TargetLibraryInfoImpl *X = const_cast<TargetLibraryInfoImpl*>(P);
33   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
34 }
35 
36 void llvm::initializeTarget(PassRegistry &Registry) {
37   initializeTargetLibraryInfoWrapperPassPass(Registry);
38   initializeTargetTransformInfoWrapperPassPass(Registry);
39 }
40 
41 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
42   initializeTarget(*unwrap(R));
43 }
44 
45 LLVMTargetDataRef LLVMGetModuleDataLayout(LLVMModuleRef M) {
46   return wrap(&unwrap(M)->getDataLayout());
47 }
48 
49 void LLVMSetModuleDataLayout(LLVMModuleRef M, LLVMTargetDataRef DL) {
50   unwrap(M)->setDataLayout(*unwrap(DL));
51 }
52 
53 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
54   return wrap(new DataLayout(StringRep));
55 }
56 
57 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
58                               LLVMPassManagerRef PM) {
59   unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI)));
60 }
61 
62 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
63   std::string StringRep = unwrap(TD)->getStringRepresentation();
64   return strdup(StringRep.c_str());
65 }
66 
67 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
68   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
69 }
70 
71 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
72   return unwrap(TD)->getPointerSize(0);
73 }
74 
75 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
76   return unwrap(TD)->getPointerSize(AS);
77 }
78 
79 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
80   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
81 }
82 
83 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
84   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
85 }
86 
87 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
88   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
89 }
90 
91 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
92   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
93 }
94 
95 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
96   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
97 }
98 
99 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
100   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
101 }
102 
103 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
104   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
105 }
106 
107 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
108   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
109 }
110 
111 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
112   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
113 }
114 
115 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
116   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
117 }
118 
119 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
120                                         LLVMValueRef GlobalVar) {
121   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
122 }
123 
124 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
125                              unsigned long long Offset) {
126   StructType *STy = unwrap<StructType>(StructTy);
127   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
128 }
129 
130 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
131                                        unsigned Element) {
132   StructType *STy = unwrap<StructType>(StructTy);
133   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
134 }
135 
136 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
137   delete unwrap(TD);
138 }
139