commit df0b6503d601c2150e3242b66f02fe906f838979
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Mon Jul 27 19:32:57 2009 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Mon Jul 27 19:32:57 2009 +0000
tree ac9bf5bbae2540b4a948d326eea13a3629ce6d6a
parent 3b07b5214ccf545ff6638d1327946c3300f1ee5f

add module identifier to the elf object file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77238 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/ELFWriter.cpp

diff --git a/lib/CodeGen/ELFWriter.cpp b/lib/CodeGen/ELFWriter.cpp
index f2a9bf3..2679d98 100644
--- a/lib/CodeGen/ELFWriter.cpp
+++ b/lib/CodeGen/ELFWriter.cpp
@@ -514,6 +514,9 @@
   if (TAI->getNonexecutableStackDirective())
     getNonExecStackSection();
 
+  // Emit module name
+  SymbolList.push_back(ELFSym::getFileSym());
+
   // Emit a symbol for each section created until now, skip null section
   for (unsigned i = 1, e = SectionList.size(); i < e; ++i) {
     ELFSection &ES = *SectionList[i];
@@ -524,7 +527,7 @@
   }
 
   // Emit string table
-  EmitStringTable();
+  EmitStringTable(M.getModuleIdentifier());
 
   // Emit the symbol table now, if non-empty.
   EmitSymbolTable();
@@ -709,7 +712,7 @@
 
 /// EmitStringTable - If the current symbol table is non-empty, emit the string
 /// table for it
-void ELFWriter::EmitStringTable() {
+void ELFWriter::EmitStringTable(const std::string &ModuleName) {
   if (!SymbolList.size()) return;  // Empty symbol table.
   ELFSection &StrTab = getStringTableSection();
 
@@ -721,12 +724,14 @@
   for (ELFSymIter I=SymbolList.begin(), E=SymbolList.end(); I != E; ++I) {
     ELFSym &Sym = *(*I);
 
-    // Use the name mangler to uniquify the LLVM symbol.
     std::string Name;
     if (Sym.isGlobalValue())
+      // Use the name mangler to uniquify the LLVM symbol.
       Name.append(Mang->getMangledName(Sym.getGlobalValue()));
     else if (Sym.isExternalSym())
       Name.append(Sym.getExternalSymbol());
+    else if (Sym.isFileType())
+      Name.append(ModuleName);
 
     if (Name.empty()) {
       Sym.NameIdx = 0;