forked from OSchip/llvm-project
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//===-- WasmDump.cpp - wasm-specific dumper ---------------------*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// This file implements the wasm-specific dumper for llvm-objdump.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm-objdump.h"
|
|
#include "llvm/Object/Wasm.h"
|
|
|
|
using namespace llvm::object;
|
|
|
|
namespace llvm {
|
|
void printWasmFileHeader(const object::ObjectFile *Obj) {
|
|
const auto *File = dyn_cast<const WasmObjectFile>(Obj);
|
|
|
|
outs() << "Program Header:\n";
|
|
outs() << "Version: 0x";
|
|
outs().write_hex(File->getHeader().Version);
|
|
outs() << "\n";
|
|
}
|
|
|
|
Error getWasmRelocationValueString(const WasmObjectFile *Obj,
|
|
const RelocationRef &RelRef,
|
|
SmallVectorImpl<char> &Result) {
|
|
const wasm::WasmRelocation &Rel = Obj->getWasmRelocation(RelRef);
|
|
symbol_iterator SI = RelRef.getSymbol();
|
|
std::string FmtBuf;
|
|
raw_string_ostream Fmt(FmtBuf);
|
|
if (SI == Obj->symbol_end()) {
|
|
// Not all wasm relocations have symbols associated with them.
|
|
// In particular R_WASM_TYPE_INDEX_LEB.
|
|
Fmt << Rel.Index;
|
|
} else {
|
|
Expected<StringRef> SymNameOrErr = SI->getName();
|
|
if (!SymNameOrErr)
|
|
return SymNameOrErr.takeError();
|
|
StringRef SymName = *SymNameOrErr;
|
|
Result.append(SymName.begin(), SymName.end());
|
|
}
|
|
Fmt << (Rel.Addend < 0 ? "" : "+") << Rel.Addend;
|
|
Fmt.flush();
|
|
Result.append(FmtBuf.begin(), FmtBuf.end());
|
|
return Error::success();
|
|
}
|
|
} // namespace llvm
|