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