1 files changed, 99 insertions, 0 deletions
diff --git a/contrib/llvm/lib/MC/MCSectionCOFF.cpp b/contrib/llvm/lib/MC/MCSectionCOFF.cpp
new file mode 100644
index 0000000..64aa2c5
--- /dev/null
+++ b/contrib/llvm/lib/MC/MCSectionCOFF.cpp
@@ -0,0 +1,99 @@
+//===- 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::setSelection(int Selection,
+                                 const MCSectionCOFF *Assoc) const {
+  assert(Selection != 0 && "invalid COMDAT selection type");
+  assert((Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) ==
+         (Assoc != 0) &&
+    "associative COMDAT section must have an associated section");
+  this->Selection = Selection;
+  this->Assoc = Assoc;
+  Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
+}
+
+void MCSectionCOFF::PrintSwitchToSection(const MCAsmInfo &MAI,
+                                         raw_ostream &OS,
+                                         const MCExpr *Subsection) const {
+
+  // standard sections don't require the '.section'
+  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 (getCharacteristics() & COFF::IMAGE_SCN_MEM_DISCARDABLE)
+    OS << 'n';
+  OS << "\"\n";
+
+  if (getCharacteristics() & COFF::IMAGE_SCN_LNK_COMDAT) {
+    switch (Selection) {
+      case COFF::IMAGE_COMDAT_SELECT_NODUPLICATES:
+        OS << "\t.linkonce one_only\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_ANY:
+        OS << "\t.linkonce discard\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_SAME_SIZE:
+        OS << "\t.linkonce same_size\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH:
+        OS << "\t.linkonce same_contents\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE:
+        OS << "\t.linkonce associative " << Assoc->getSectionName() << "\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_LARGEST:
+        OS << "\t.linkonce largest\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_NEWEST:
+        OS << "\t.linkonce newest\n";
+        break;
+      default:
+        assert (0 && "unsupported COFF selection type");
+        break;
+    }
+  }
+}
+
+bool MCSectionCOFF::UseCodeAlign() const {
+  return getKind().isText();
+}
+
+bool MCSectionCOFF::isVirtualSection() const {
+  return getCharacteristics() & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
+}