[llvm] [XCOFF][obj2yaml] support parsing auxiliary symbols for XCOFF (PR #70642)

[James Henderson via llvm-commits]

================
@@ -106,6 +111,70 @@ Error XCOFFDumper::dumpSections(ArrayRef<Shdr> Sections) {
   return Error::success();
 }
 
+static void
+dumpStatAuxSym(std::vector<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>> *AuxEntTbl,
+               const object::XCOFFSectAuxEntForStat *AuxEntPtr) {
+  XCOFFYAML::SectAuxEntForStat StatAuxSym;
+  StatAuxSym.SectionLength = AuxEntPtr->SectionLength;
+  StatAuxSym.NumberOfLineNum = AuxEntPtr->NumberOfLineNum;
+  StatAuxSym.NumberOfRelocEnt = AuxEntPtr->NumberOfRelocEnt;
+  AuxEntTbl->push_back(
+      std::make_unique<XCOFFYAML::SectAuxEntForStat>(StatAuxSym));
+}
+
+static void
+dumpFunAuxSym(std::vector<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>> *AuxEntTbl,
+              const object::XCOFFFunctionAuxEnt32 *AuxEntPtr) {
+  XCOFFYAML::FunctionAuxEnt FunAuxSym;
+  FunAuxSym.OffsetToExceptionTbl = AuxEntPtr->OffsetToExceptionTbl;
+  FunAuxSym.PtrToLineNum = AuxEntPtr->PtrToLineNum;
+  FunAuxSym.SizeOfFunction = AuxEntPtr->SizeOfFunction;
+  FunAuxSym.SymIdxOfNextBeyond = AuxEntPtr->SymIdxOfNextBeyond;
+  AuxEntTbl->push_back(std::make_unique<XCOFFYAML::FunctionAuxEnt>(FunAuxSym));
+}
+
+static void
+dumpFunAuxSym(std::vector<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>> *AuxEntTbl,
+              const object::XCOFFFunctionAuxEnt64 *AuxEntPtr) {
+  XCOFFYAML::FunctionAuxEnt FunAuxSym;
+  FunAuxSym.PtrToLineNum = AuxEntPtr->PtrToLineNum;
+  FunAuxSym.SizeOfFunction = AuxEntPtr->SizeOfFunction;
+  FunAuxSym.SymIdxOfNextBeyond = AuxEntPtr->SymIdxOfNextBeyond;
+  AuxEntTbl->push_back(std::make_unique<XCOFFYAML::FunctionAuxEnt>(FunAuxSym));
+}
+
+static void
+dumpExpAuxSym(std::vector<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>> *AuxEntTbl,
+              const object::XCOFFExceptionAuxEnt *AuxEntPtr) {
+  XCOFFYAML::ExcpetionAuxEnt ExceptAuxSym;
+  ExceptAuxSym.OffsetToExceptionTbl = AuxEntPtr->OffsetToExceptionTbl;
+  ExceptAuxSym.SizeOfFunction = AuxEntPtr->SizeOfFunction;
+  ExceptAuxSym.SymIdxOfNextBeyond = AuxEntPtr->SymIdxOfNextBeyond;
+  AuxEntTbl->push_back(
+      std::make_unique<XCOFFYAML::ExcpetionAuxEnt>(ExceptAuxSym));
+}
+
+static void dumpCscetAuxSym(
+    std::vector<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>> *AuxEntTbl,
+    const object::XCOFFCsectAuxRef &AuxEntPtr, bool Is64bit) {
+  XCOFFYAML::CsectAuxEnt CsectAuxSym;
+  CsectAuxSym.ParameterHashIndex = AuxEntPtr.getParameterHashIndex();
+  CsectAuxSym.TypeChkSectNum = AuxEntPtr.getTypeChkSectNum();
+  CsectAuxSym.SymbolAlignmentAndType = AuxEntPtr.getSymbolAlignmentAndType();
+  CsectAuxSym.StorageMappingClass = AuxEntPtr.getStorageMappingClass();
+  if (Is64bit) {
----------------
jh7370 wrote:

Nit: it might be slightly easier to read if there was a blank line before this `if`.

https://github.com/llvm/llvm-project/pull/70642