[llvm] [llvm-objdump] print out xcoff file header and load section header for xcoff object file with option private-headers (PR #96350)

[Chen Zheng via llvm-commits]

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@@ -30,10 +32,131 @@ using namespace llvm::support;
 
 namespace {
 class XCOFFDumper : public objdump::Dumper {
+  const XCOFFObjectFile &Obj;
+  unsigned Width;
 public:
-  XCOFFDumper(const object::XCOFFObjectFile &O) : Dumper(O) {}
-  void printPrivateHeaders() override {}
+  XCOFFDumper(const object::XCOFFObjectFile &O) : Dumper(O), Obj(O) {}
+  void printPrivateHeaders() override;
+  void printFileHeader();
+  void printAuxiliaryHeader(){};
+  void printLoaderSectionHeader();
+  FormattedString formatName(StringRef Name);
+  void printHex(StringRef Name, uint64_t Value);
+  void printNumber(StringRef Name, uint64_t Value);
+  void printStrHex(StringRef Name, StringRef Str, uint64_t Value);
+  void setWidth(unsigned W) {Width =W;};
 };
+
+void XCOFFDumper::printPrivateHeaders() {
+  printFileHeader();
+  printAuxiliaryHeader();
+  printLoaderSectionHeader();
+}
+
+FormattedString XCOFFDumper::formatName(StringRef Name) {
+  return FormattedString(Name, Width, FormattedString::JustifyLeft);
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chenzheng1030 wrote:

I am not sure I understand the usage of `FormattedString` with `FormattedString::JustifyLeft` here. Why we just use `outs() << Name << Str` directly? Using `FormattedString` will only put space at the end of the string?

https://github.com/llvm/llvm-project/pull/96350