[AIX] llvm-readobj support a new option --exception-section for xcoff object file.

Summary:

llvm-readobj support a new option --exception-section for xcoff object file.

https://www.ibm.com/docs/en/aix/7.2?topic=formats-xcoff-object-file-format#XCOFF__iua3i23ajbau

Reviewers:  James Henderson,Paul Scoropan

Differential Revision: https://reviews.llvm.org/D133030

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index e1ebbeb..06c6f7c 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -162,6 +162,7 @@ static bool COFFTLSDirectory;
 
 // XCOFF specific options.
 static bool XCOFFAuxiliaryHeader;
+static bool XCOFFExceptionSection;
 
 OutputStyleTy Output = OutputStyleTy::LLVM;
 static std::vector<std::string> InputFilenames;
@@ -302,6 +303,7 @@ static void parseOptions(const opt::InputArgList &Args) {
 
   // XCOFF specific options.
   opts::XCOFFAuxiliaryHeader = Args.hasArg(OPT_auxiliary_header);
+  opts::XCOFFExceptionSection = Args.hasArg(OPT_exception_section);
 
   opts::InputFilenames = Args.getAllArgValues(OPT_INPUT);
 }
@@ -395,6 +397,8 @@ static void dumpObject(ObjectFile &Obj, ScopedPrinter &Writer,
   if (opts::FileHeaders)
     Dumper->printFileHeaders();
 
+  // Auxiliary header in XOCFF is right after the file header, so print the data
+  // here.
   if (Obj.isXCOFF() && opts::XCOFFAuxiliaryHeader)
     Dumper->printAuxiliaryHeader();
 
@@ -502,6 +506,10 @@ static void dumpObject(ObjectFile &Obj, ScopedPrinter &Writer,
     if (opts::CGProfile)
       Dumper->printCGProfile();
   }
+
+  if (Obj.isXCOFF() && opts::XCOFFExceptionSection)
+    Dumper->printExceptionSection();
+
   if (opts::PrintStackMap)
     Dumper->printStackMap();
   if (opts::PrintStackSizes)