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 LLVMCreateTargetData(const char *StringRep) {
46   return wrap(new DataLayout(StringRep));
47 }
48 
49 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
50                               LLVMPassManagerRef PM) {
51   unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI)));
52 }
53 
54 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
55   std::string StringRep = unwrap(TD)->getStringRepresentation();
56   return strdup(StringRep.c_str());
57 }
58 
59 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
60   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
61 }
62 
63 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
64   return unwrap(TD)->getPointerSize(0);
65 }
66 
67 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
68   return unwrap(TD)->getPointerSize(AS);
69 }
70 
71 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
72   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
73 }
74 
75 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
76   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
77 }
78 
79 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
80   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
81 }
82 
83 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
84   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
85 }
86 
87 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
88   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
89 }
90 
91 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
92   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
93 }
94 
95 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
96   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
97 }
98 
99 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
100   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
101 }
102 
103 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
104   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
105 }
106 
107 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
108   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
109 }
110 
111 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
112                                         LLVMValueRef GlobalVar) {
113   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
114 }
115 
116 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
117                              unsigned long long Offset) {
118   StructType *STy = unwrap<StructType>(StructTy);
119   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
120 }
121 
122 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
123                                        unsigned Element) {
124   StructType *STy = unwrap<StructType>(StructTy);
125   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
126 }
127 
128 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
129   delete unwrap(TD);
130 }
131