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53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//===-- WasmDump.cpp - wasm-specific dumper ---------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file implements the wasm-specific dumper for llvm-objdump.
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///
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//===----------------------------------------------------------------------===//
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#include "llvm-objdump.h"
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#include "llvm/Object/Wasm.h"
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using namespace llvm::object;
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namespace llvm {
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void printWasmFileHeader(const object::ObjectFile *Obj) {
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const auto *File = dyn_cast<const WasmObjectFile>(Obj);
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outs() << "Program Header:\n";
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outs() << "Version: 0x";
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outs().write_hex(File->getHeader().Version);
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outs() << "\n";
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}
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Error getWasmRelocationValueString(const WasmObjectFile *Obj,
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const RelocationRef &RelRef,
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SmallVectorImpl<char> &Result) {
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const wasm::WasmRelocation &Rel = Obj->getWasmRelocation(RelRef);
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symbol_iterator SI = RelRef.getSymbol();
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std::string FmtBuf;
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raw_string_ostream Fmt(FmtBuf);
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if (SI == Obj->symbol_end()) {
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// Not all wasm relocations have symbols associated with them.
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// In particular R_WASM_TYPE_INDEX_LEB.
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Fmt << Rel.Index;
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} else {
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Expected<StringRef> SymNameOrErr = SI->getName();
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if (!SymNameOrErr)
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return SymNameOrErr.takeError();
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StringRef SymName = *SymNameOrErr;
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Result.append(SymName.begin(), SymName.end());
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}
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Fmt << (Rel.Addend < 0 ? "" : "+") << Rel.Addend;
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Fmt.flush();
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Result.append(FmtBuf.begin(), FmtBuf.end());
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return Error::success();
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}
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} // namespace llvm
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