| 1 | //===- IRObjectFile.h - LLVM IR object file implementation ------*- 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 declares the IRObjectFile template class. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_OBJECT_IROBJECTFILE_H |
| 14 | #define LLVM_OBJECT_IROBJECTFILE_H |
| 15 | |
| 16 | #include "llvm/Bitcode/BitcodeReader.h" |
| 17 | #include "llvm/Object/IRSymtab.h" |
| 18 | #include "llvm/Object/ModuleSymbolTable.h" |
| 19 | #include "llvm/Object/SymbolicFile.h" |
| 20 | #include "llvm/Support/Compiler.h" |
| 21 | |
| 22 | namespace llvm { |
| 23 | class Module; |
| 24 | |
| 25 | namespace object { |
| 26 | class ObjectFile; |
| 27 | |
| 28 | class LLVM_ABI IRObjectFile : public SymbolicFile { |
| 29 | std::vector<std::unique_ptr<Module>> Mods; |
| 30 | ModuleSymbolTable SymTab; |
| 31 | IRObjectFile(MemoryBufferRef Object, |
| 32 | std::vector<std::unique_ptr<Module>> Mods); |
| 33 | |
| 34 | public: |
| 35 | ~IRObjectFile() override; |
| 36 | void moveSymbolNext(DataRefImpl &Symb) const override; |
| 37 | Error printSymbolName(raw_ostream &OS, DataRefImpl Symb) const override; |
| 38 | Expected<uint32_t> getSymbolFlags(DataRefImpl Symb) const override; |
| 39 | basic_symbol_iterator symbol_begin() const override; |
| 40 | basic_symbol_iterator symbol_end() const override; |
| 41 | bool is64Bit() const override { |
| 42 | return Triple(getTargetTriple()).isArch64Bit(); |
| 43 | } |
| 44 | StringRef getTargetTriple() const; |
| 45 | |
| 46 | static bool classof(const Binary *v) { |
| 47 | return v->isIR(); |
| 48 | } |
| 49 | |
| 50 | using module_iterator = |
| 51 | pointee_iterator<std::vector<std::unique_ptr<Module>>::const_iterator, |
| 52 | const Module>; |
| 53 | |
| 54 | module_iterator module_begin() const { return module_iterator(Mods.begin()); } |
| 55 | module_iterator module_end() const { return module_iterator(Mods.end()); } |
| 56 | |
| 57 | iterator_range<module_iterator> modules() const { |
| 58 | return make_range(x: module_begin(), y: module_end()); |
| 59 | } |
| 60 | |
| 61 | /// Finds and returns bitcode embedded in the given object file, or an |
| 62 | /// error code if not found. |
| 63 | static Expected<MemoryBufferRef> findBitcodeInObject(const ObjectFile &Obj); |
| 64 | |
| 65 | /// Finds and returns bitcode in the given memory buffer (which may |
| 66 | /// be either a bitcode file or a native object file with embedded bitcode), |
| 67 | /// or an error code if not found. |
| 68 | static Expected<MemoryBufferRef> |
| 69 | findBitcodeInMemBuffer(MemoryBufferRef Object); |
| 70 | |
| 71 | static Expected<std::unique_ptr<IRObjectFile>> create(MemoryBufferRef Object, |
| 72 | LLVMContext &Context); |
| 73 | }; |
| 74 | |
| 75 | /// The contents of a bitcode file and its irsymtab. Any underlying data |
| 76 | /// for the irsymtab are owned by Symtab and Strtab. |
| 77 | struct IRSymtabFile { |
| 78 | std::vector<BitcodeModule> Mods; |
| 79 | SmallVector<char, 0> Symtab, Strtab; |
| 80 | irsymtab::Reader TheReader; |
| 81 | }; |
| 82 | |
| 83 | /// Reads a bitcode file, creating its irsymtab if necessary. |
| 84 | LLVM_ABI Expected<IRSymtabFile> readIRSymtab(MemoryBufferRef MBRef); |
| 85 | } |
| 86 | |
| 87 | } // namespace llvm |
| 88 | |
| 89 | #endif |
| 90 | |