switch MCSectionCOFF from a syntactic to semantic representation,

patch by Peter Housel!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103267 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/MC/MCSectionCOFF.cpp b/lib/MC/MCSectionCOFF.cpp
new file mode 100644
index 0000000000..f26768a764
--- /dev/null
+++ b/lib/MC/MCSectionCOFF.cpp
@@ -0,0 +1,49 @@
+//===- lib/MC/MCSectionCOFF.cpp - COFF Code Section Representation --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCSectionCOFF.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+MCSectionCOFF::~MCSectionCOFF() {} // anchor.
+
+// ShouldOmitSectionDirective - Decides whether a '.section' directive
+// should be printed before the section name
+bool MCSectionCOFF::ShouldOmitSectionDirective(StringRef Name,
+                                               const MCAsmInfo &MAI) const {
+  
+  // FIXME: Does .section .bss/.data/.text work everywhere??
+  if (Name == ".text" || Name == ".data" || Name == ".bss")
+    return true;
+
+  return false;
+}
+
+void MCSectionCOFF::PrintSwitchToSection(const MCAsmInfo &MAI,
+                                         raw_ostream &OS) const {
+  
+  if (ShouldOmitSectionDirective(SectionName, MAI)) {
+    OS << '\t' << getSectionName() << '\n';
+    return;
+  }
+
+  OS << "\t.section\t" << getSectionName() << ",\"";
+  if (getKind().isText())
+    OS << 'x';
+  if (getKind().isWriteable())
+    OS << 'w';
+  else
+    OS << 'r';
+  if (getFlags() & MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE)
+    OS << 'n';
+  OS << "\"\n";
+}