lld/MachO/Sections.cpp

   1 //===- Sections.cpp ---------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "Sections.h"
  10 #include "InputSection.h"
  11 #include "OutputSegment.h"
  12
  13 #include "llvm/ADT/StringSwitch.h"
  14
  15 using namespace llvm;
  16 using namespace llvm::MachO;
  17
  18 namespace lld::macho::sections {
  19 bool isCodeSection(StringRef name, StringRef segName, uint32_t flags) {
  20   uint32_t type = sectionType(flags);
  21   if (type != S_REGULAR && type != S_COALESCED)
  22     return false;
  23
  24   uint32_t attr = flags & SECTION_ATTRIBUTES_USR;
  25   if (attr == S_ATTR_PURE_INSTRUCTIONS)
  26     return true;
  27
  28   if (segName == segment_names::text)
  29     return StringSwitch<bool>(name)
  30         .Cases(section_names::textCoalNt, section_names::staticInit, true)
  31         .Default(false);
  32
  33   return false;
  34 }
  35
  36 } // namespace lld::macho::sections