Add CFIStartSections to the asm printer. Add an assert that at least

one of the sections is created.

llvm-svn: 131124

2 files changed, 20 insertions, 0 deletions

diff --git a/llvm/lib/MC/MCAsmStreamer.cpp b/llvm/lib/MC/MCAsmStreamer.cpp
index c7fc190b876..603ae837b6d 100644
--- a/llvm/lib/MC/MCAsmStreamer.cpp
+++ b/llvm/lib/MC/MCAsmStreamer.cpp
@@ -193,6 +193,7 @@ public:
                                      unsigned Isa, unsigned Discriminator,
                                      StringRef FileName);
 
+  virtual void EmitCFISections(bool EH, bool Debug);
   virtual void EmitCFIStartProc();
   virtual void EmitCFIEndProc();
   virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
@@ -764,6 +765,24 @@ void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
   EmitEOL();
 }
 
+void MCAsmStreamer::EmitCFISections(bool EH, bool Debug) {
+  MCStreamer::EmitCFISections(EH, Debug);
+
+  if (!UseCFI)
+    return;
+
+  OS << "\t.cfi_sections ";
+  if (EH) {
+    OS << ".eh_frame";
+    if (Debug)
+      OS << ", .debug_frame";
+  } else if (Debug) {
+    OS << ".debug_frame";
+  }
+
+  EmitEOL();
+}
+
 void MCAsmStreamer::EmitCFIStartProc() {
   MCStreamer::EmitCFIStartProc();
 
diff --git a/llvm/lib/MC/MCStreamer.cpp b/llvm/lib/MC/MCStreamer.cpp
index 689e408a1a0..9b644a91bd9 100644
--- a/llvm/lib/MC/MCStreamer.cpp
+++ b/llvm/lib/MC/MCStreamer.cpp
@@ -178,6 +178,7 @@ void MCStreamer::EmitLabel(MCSymbol *Symbol) {
 }
 
 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
+  assert(EH || Debug);
   EmitEHFrame = EH;
   EmitDebugFrame = Debug;
 }