Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 91 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/MC/MCSectionMachO.h b/clang-r353983/include/llvm/MC/MCSectionMachO.h
new file mode 100644
index 00000000..2c73661f
--- /dev/null
+++ b/clang-r353983/include/llvm/MC/MCSectionMachO.h
@@ -0,0 +1,91 @@
+//===- MCSectionMachO.h - MachO Machine Code Sections -----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the MCSectionMachO class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCSECTIONMACHO_H
+#define LLVM_MC_MCSECTIONMACHO_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/BinaryFormat/MachO.h"
+#include "llvm/MC/MCSection.h"
+
+namespace llvm {
+
+/// This represents a section on a Mach-O system (used by Mac OS X).  On a Mac
+/// system, these are also described in /usr/include/mach-o/loader.h.
+class MCSectionMachO final : public MCSection {
+  char SegmentName[16];  // Not necessarily null terminated!
+  char SectionName[16];  // Not necessarily null terminated!
+
+  /// This is the SECTION_TYPE and SECTION_ATTRIBUTES field of a section, drawn
+  /// from the enums below.
+  unsigned TypeAndAttributes;
+
+  /// The 'reserved2' field of a section, used to represent the size of stubs,
+  /// for example.
+  unsigned Reserved2;
+
+  MCSectionMachO(StringRef Segment, StringRef Section, unsigned TAA,
+                 unsigned reserved2, SectionKind K, MCSymbol *Begin);
+  friend class MCContext;
+public:
+
+  StringRef getSegmentName() const {
+    // SegmentName is not necessarily null terminated!
+    if (SegmentName[15])
+      return StringRef(SegmentName, 16);
+    return StringRef(SegmentName);
+  }
+  StringRef getSectionName() const {
+    // SectionName is not necessarily null terminated!
+    if (SectionName[15])
+      return StringRef(SectionName, 16);
+    return StringRef(SectionName);
+  }
+
+  unsigned getTypeAndAttributes() const { return TypeAndAttributes; }
+  unsigned getStubSize() const { return Reserved2; }
+
+  MachO::SectionType getType() const {
+    return static_cast<MachO::SectionType>(TypeAndAttributes &
+                                           MachO::SECTION_TYPE);
+  }
+  bool hasAttribute(unsigned Value) const {
+    return (TypeAndAttributes & Value) != 0;
+  }
+
+  /// Parse the section specifier indicated by "Spec". This is a string that can
+  /// appear after a .section directive in a mach-o flavored .s file.  If
+  /// successful, this fills in the specified Out parameters and returns an
+  /// empty string.  When an invalid section specifier is present, this returns
+  /// a string indicating the problem. If no TAA was parsed, TAA is not altered,
+  /// and TAAWasSet becomes false.
+  static std::string ParseSectionSpecifier(StringRef Spec,       // In.
+                                           StringRef &Segment,   // Out.
+                                           StringRef &Section,   // Out.
+                                           unsigned  &TAA,       // Out.
+                                           bool      &TAAParsed, // Out.
+                                           unsigned  &StubSize); // Out.
+
+  void PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
+                            raw_ostream &OS,
+                            const MCExpr *Subsection) const override;
+  bool UseCodeAlign() const override;
+  bool isVirtualSection() const override;
+
+  static bool classof(const MCSection *S) {
+    return S->getVariant() == SV_MachO;
+  }
+};
+
+} // end namespace llvm
+
+#endif