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/InitializePasses.h"
20 #include "llvm/PassManager.h"
21 #include "llvm/Target/TargetLibraryInfo.h"
22 #include <cstring>
23 
24 using namespace llvm;
25 
26 void llvm::initializeTarget(PassRegistry &Registry) {
27   initializeDataLayoutPass(Registry);
28   initializeTargetLibraryInfoPass(Registry);
29   initializeTargetTransformInfoPass(Registry);
30 }
31 
32 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
33   initializeTarget(*unwrap(R));
34 }
35 
36 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
37   return wrap(new DataLayout(StringRep));
38 }
39 
40 void LLVMAddTargetData(LLVMTargetDataRef TD, LLVMPassManagerRef PM) {
41   unwrap(PM)->add(new DataLayout(*unwrap(TD)));
42 }
43 
44 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
45                               LLVMPassManagerRef PM) {
46   unwrap(PM)->add(new TargetLibraryInfo(*unwrap(TLI)));
47 }
48 
49 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
50   std::string StringRep = unwrap(TD)->getStringRepresentation();
51   return strdup(StringRep.c_str());
52 }
53 
54 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
55   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
56 }
57 
58 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
59   return unwrap(TD)->getPointerSize(0);
60 }
61 
62 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
63   return unwrap(TD)->getPointerSize(AS);
64 }
65 
66 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
67   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
68 }
69 
70 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
71   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
72 }
73 
74 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
75   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
76 }
77 
78 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
79   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
80 }
81 
82 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
83   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
84 }
85 
86 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
87   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
88 }
89 
90 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
91   return unwrap(TD)->getCallFrameTypeAlignment(unwrap(Ty));
92 }
93 
94 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
95   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
96 }
97 
98 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
99                                         LLVMValueRef GlobalVar) {
100   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
101 }
102 
103 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
104                              unsigned long long Offset) {
105   StructType *STy = unwrap<StructType>(StructTy);
106   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
107 }
108 
109 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
110                                        unsigned Element) {
111   StructType *STy = unwrap<StructType>(StructTy);
112   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
113 }
114 
115 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
116   delete unwrap(TD);
117 }
118