Sam Clegg 2a6136e552
[llvm-objcopy][WebAssembly] Allow --strip-debug to operate on relocatable files. (#102978)
This change is enough to allow `--strip-debug` to work on object files,
without breaking the relocation information or symbol table.

A more complete version of this change would instead reconstruct the
symbol table and relocation sections, but that is much larger change.

Bug: #102002
2024-08-19 21:52:17 -07:00

50 lines
1.5 KiB
C++

//===- WasmObject.h ---------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_OBJCOPY_WASM_WASMOBJECT_H
#define LLVM_LIB_OBJCOPY_WASM_WASMOBJECT_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Object/Wasm.h"
#include "llvm/Support/MemoryBuffer.h"
#include <vector>
namespace llvm {
namespace objcopy {
namespace wasm {
struct Section {
// For now, each section is only an opaque binary blob with no distinction
// between custom and known sections.
uint8_t SectionType;
std::optional<uint8_t> HeaderSecSizeEncodingLen;
StringRef Name;
ArrayRef<uint8_t> Contents;
};
struct Object {
llvm::wasm::WasmObjectHeader Header;
// For now don't discriminate between kinds of sections.
std::vector<Section> Sections;
bool isRelocatableObject = false;
void addSectionWithOwnedContents(Section NewSection,
std::unique_ptr<MemoryBuffer> &&Content);
void removeSections(function_ref<bool(const Section &)> ToRemove);
private:
std::vector<std::unique_ptr<MemoryBuffer>> OwnedContents;
};
} // end namespace wasm
} // end namespace objcopy
} // end namespace llvm
#endif // LLVM_LIB_OBJCOPY_WASM_WASMOBJECT_H