1 files changed, 52 insertions, 0 deletions
diff --git a/llvm/tools/llvm-objdump/WasmDump.cpp b/llvm/tools/llvm-objdump/WasmDump.cpp
new file mode 100644
index 000000000000..da27a4acbb5f
--- /dev/null
+++ b/llvm/tools/llvm-objdump/WasmDump.cpp
@@ -0,0 +1,52 @@
+//===-- 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