1 | //===- llvm/CodeGen/MachineModuleInfoImpls.h --------------------*- C++ -*-===// |
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 defines object-file format specific implementations of |
10 | // MachineModuleInfoImpl. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |
15 | #define LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |
16 | |
17 | #include "llvm/ADT/DenseMap.h" |
18 | #include "llvm/ADT/SetVector.h" |
19 | #include "llvm/CodeGen/MachineModuleInfo.h" |
20 | #include <cassert> |
21 | |
22 | namespace llvm { |
23 | |
24 | class MCSymbol; |
25 | |
26 | /// MachineModuleInfoMachO - This is a MachineModuleInfoImpl implementation |
27 | /// for MachO targets. |
28 | class MachineModuleInfoMachO : public MachineModuleInfoImpl { |
29 | /// GVStubs - Darwin '$non_lazy_ptr' stubs. The key is something like |
30 | /// "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra bit |
31 | /// is true if this GV is external. |
32 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
33 | |
34 | /// ThreadLocalGVStubs - Darwin '$non_lazy_ptr' stubs. The key is something |
35 | /// like "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra |
36 | /// bit is true if this GV is external. |
37 | DenseMap<MCSymbol *, StubValueTy> ThreadLocalGVStubs; |
38 | |
39 | virtual void anchor(); // Out of line virtual method. |
40 | |
41 | public: |
42 | MachineModuleInfoMachO(const MachineModuleInfo &) {} |
43 | |
44 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
45 | assert(Sym && "Key cannot be null" ); |
46 | return GVStubs[Sym]; |
47 | } |
48 | |
49 | StubValueTy &getThreadLocalGVStubEntry(MCSymbol *Sym) { |
50 | assert(Sym && "Key cannot be null" ); |
51 | return ThreadLocalGVStubs[Sym]; |
52 | } |
53 | |
54 | /// Accessor methods to return the set of stubs in sorted order. |
55 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
56 | SymbolListTy GetThreadLocalGVStubList() { |
57 | return getSortedStubs(ThreadLocalGVStubs); |
58 | } |
59 | }; |
60 | |
61 | /// MachineModuleInfoELF - This is a MachineModuleInfoImpl implementation |
62 | /// for ELF targets. |
63 | class MachineModuleInfoELF : public MachineModuleInfoImpl { |
64 | /// GVStubs - These stubs are used to materialize global addresses in PIC |
65 | /// mode. |
66 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
67 | |
68 | virtual void anchor(); // Out of line virtual method. |
69 | |
70 | public: |
71 | MachineModuleInfoELF(const MachineModuleInfo &) {} |
72 | |
73 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
74 | assert(Sym && "Key cannot be null" ); |
75 | return GVStubs[Sym]; |
76 | } |
77 | |
78 | /// Accessor methods to return the set of stubs in sorted order. |
79 | |
80 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
81 | }; |
82 | |
83 | /// MachineModuleInfoCOFF - This is a MachineModuleInfoImpl implementation |
84 | /// for COFF targets. |
85 | class MachineModuleInfoCOFF : public MachineModuleInfoImpl { |
86 | /// GVStubs - These stubs are used to materialize global addresses in PIC |
87 | /// mode. |
88 | DenseMap<MCSymbol *, StubValueTy> GVStubs; |
89 | |
90 | virtual void anchor(); // Out of line virtual method. |
91 | |
92 | public: |
93 | MachineModuleInfoCOFF(const MachineModuleInfo &) {} |
94 | |
95 | StubValueTy &getGVStubEntry(MCSymbol *Sym) { |
96 | assert(Sym && "Key cannot be null" ); |
97 | return GVStubs[Sym]; |
98 | } |
99 | |
100 | /// Accessor methods to return the set of stubs in sorted order. |
101 | |
102 | SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } |
103 | }; |
104 | |
105 | /// MachineModuleInfoWasm - This is a MachineModuleInfoImpl implementation |
106 | /// for Wasm targets. |
107 | class MachineModuleInfoWasm : public MachineModuleInfoImpl { |
108 | virtual void anchor(); // Out of line virtual method. |
109 | |
110 | public: |
111 | MachineModuleInfoWasm(const MachineModuleInfo &) {} |
112 | |
113 | SetVector<StringRef> MachineSymbolsUsed; |
114 | }; |
115 | |
116 | } // end namespace llvm |
117 | |
118 | #endif // LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H |
119 | |