4 files changed, 128 insertions, 0 deletions
diff --git a/llvm/tools/llvm-readobj/CMakeLists.txt b/llvm/tools/llvm-readobj/CMakeLists.txt
index 389e348bc4d..7c636ef421f 100644
--- a/llvm/tools/llvm-readobj/CMakeLists.txt
+++ b/llvm/tools/llvm-readobj/CMakeLists.txt
@@ -22,6 +22,7 @@ add_llvm_tool(llvm-readobj
   WasmDumper.cpp
   Win64EHDumper.cpp
   WindowsResourceDumper.cpp
+  XCOFFDumper.cpp
   )
 
 add_llvm_tool_symlink(llvm-readelf llvm-readobj)
diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
index 5767485a192..0bfce2ef3e4 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.h
+++ b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -133,6 +133,10 @@ std::error_code createWasmDumper(const object::ObjectFile *Obj,
                                  ScopedPrinter &Writer,
                                  std::unique_ptr<ObjDumper> &Result);
 
+std::error_code createXCOFFDumper(const object::ObjectFile *Obj,
+                                  ScopedPrinter &Writer,
+                                  std::unique_ptr<ObjDumper> &Result);
+
 void dumpCOFFImportFile(const object::COFFImportFile *File,
                         ScopedPrinter &Writer);
 
diff --git a/llvm/tools/llvm-readobj/XCOFFDumper.cpp b/llvm/tools/llvm-readobj/XCOFFDumper.cpp
new file mode 100644
index 00000000000..009b99c1f7b
--- /dev/null
+++ b/llvm/tools/llvm-readobj/XCOFFDumper.cpp
@@ -0,0 +1,121 @@
+//===-- XCOFFDumper.cpp - XCOFF dumping utility -----------------*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements an XCOFF specific dumper for llvm-readobj.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Error.h"
+#include "ObjDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/Object/XCOFFObjectFile.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm;
+using namespace object;
+
+namespace {
+
+class XCOFFDumper : public ObjDumper {
+public:
+  XCOFFDumper(const XCOFFObjectFile &Obj, ScopedPrinter &Writer)
+      : ObjDumper(Writer), Obj(Obj) {}
+
+  void printFileHeaders() override;
+  void printSectionHeaders() override;
+  void printRelocations() override;
+  void printSymbols() override;
+  void printDynamicSymbols() override;
+  void printUnwindInfo() override;
+  void printStackMap() const override;
+  void printNeededLibraries() override;
+
+private:
+  const XCOFFObjectFile &Obj;
+};
+} // anonymous namespace
+
+void XCOFFDumper::printFileHeaders() {
+  DictScope DS(W, "FileHeader");
+  W.printHex("Magic", Obj.getMagic());
+  W.printNumber("NumberOfSections", Obj.getNumberOfSections());
+
+  // Negative timestamp values are reserved for future use.
+  int32_t TimeStamp = Obj.getTimeStamp();
+  if (TimeStamp > 0) {
+    // This handling of the time stamp assumes that the host system's time_t is
+    // compatible with AIX time_t. If a platform is not compatible, the lit
+    // tests will let us know.
+    time_t TimeDate = TimeStamp;
+
+    char FormattedTime[21] = {};
+    size_t BytesWritten =
+        strftime(FormattedTime, 21, "%Y-%m-%dT%H:%M:%SZ", gmtime(&TimeDate));
+    if (BytesWritten)
+      W.printHex("TimeStamp", FormattedTime, TimeStamp);
+    else
+      W.printHex("Timestamp", TimeStamp);
+  } else {
+    W.printHex("TimeStamp", TimeStamp == 0 ? "None" : "Reserved Value",
+               TimeStamp);
+  }
+
+  W.printHex("SymbolTableOffset", Obj.getSymbolTableOffset());
+  int32_t SymTabEntries = Obj.getNumberOfSymbolTableEntries();
+  if (SymTabEntries >= 0)
+    W.printNumber("SymbolTableEntries", SymTabEntries);
+  else
+    W.printHex("SymbolTableEntries", "Reserved Value", SymTabEntries);
+
+  W.printHex("OptionalHeaderSize", Obj.getOptionalHeaderSize());
+  W.printHex("Flags", Obj.getFlags());
+
+  // TODO FIXME Add support for the auxiliary header (if any) once
+  // XCOFFObjectFile has the necessary support.
+}
+
+void XCOFFDumper::printSectionHeaders() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printRelocations() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printSymbols() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printDynamicSymbols() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printUnwindInfo() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printStackMap() const {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printNeededLibraries() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+namespace llvm {
+std::error_code createXCOFFDumper(const object::ObjectFile *Obj,
+                                  ScopedPrinter &Writer,
+                                  std::unique_ptr<ObjDumper> &Result) {
+  const XCOFFObjectFile *XObj = dyn_cast<XCOFFObjectFile>(Obj);
+  if (!XObj)
+    return readobj_error::unsupported_obj_file_format;
+
+  Result.reset(new XCOFFDumper(*XObj, Writer));
+  return readobj_error::success;
+}
+} // namespace llvm
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 89fddc7233c..e8cea5a7fff 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -440,6 +440,8 @@ static std::error_code createDumper(const ObjectFile *Obj,
     return createMachODumper(Obj, Writer, Result);
   if (Obj->isWasm())
     return createWasmDumper(Obj, Writer, Result);
+  if (Obj->isXCOFF())
+    return createXCOFFDumper(Obj, Writer, Result);
 
   return readobj_error::unsupported_obj_file_format;
 }