1 files changed, 32 insertions, 13 deletions

diff --git a/lib/MC/MCSectionELF.cpp b/lib/MC/MCSectionELF.cpp
index 587b28f71b7d..78fe01cca24a 100644
--- a/lib/MC/MCSectionELF.cpp
+++ b/lib/MC/MCSectionELF.cpp
@@ -7,23 +7,23 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/MC/MCSectionELF.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSectionELF.h"
 #include "llvm/Support/ELF.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
+#include <cassert>
 
 using namespace llvm;
 
-MCSectionELF::~MCSectionELF() {} // anchor.
+MCSectionELF::~MCSectionELF() = default; // anchor.
 
 // Decides whether a '.section' directive
 // should be printed before the section name.
 bool MCSectionELF::ShouldOmitSectionDirective(StringRef Name,
                                               const MCAsmInfo &MAI) const {
-
   if (isUnique())
     return false;
 
@@ -53,10 +53,9 @@ static void printName(raw_ostream &OS, StringRef Name) {
   OS << '"';
 }
 
-void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
+void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
                                         raw_ostream &OS,
                                         const MCExpr *Subsection) const {
-
   if (ShouldOmitSectionDirective(SectionName, MAI)) {
     OS << '\t' << getSectionName();
     if (Subsection) {
@@ -104,14 +103,21 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
     OS << 'S';
   if (Flags & ELF::SHF_TLS)
     OS << 'T';
+  if (Flags & ELF::SHF_LINK_ORDER)
+    OS << 'o';
 
   // If there are target-specific flags, print them.
-  if (Flags & ELF::XCORE_SHF_CP_SECTION)
-    OS << 'c';
-  if (Flags & ELF::XCORE_SHF_DP_SECTION)
-    OS << 'd';
-  if (Flags & ELF::SHF_ARM_PURECODE)
-    OS << 'y';
+  Triple::ArchType Arch = T.getArch();
+  if (Arch == Triple::xcore) {
+    if (Flags & ELF::XCORE_SHF_CP_SECTION)
+      OS << 'c';
+    if (Flags & ELF::XCORE_SHF_DP_SECTION)
+      OS << 'd';
+  } else if (Arch == Triple::arm || Arch == Triple::armeb ||
+             Arch == Triple::thumb || Arch == Triple::thumbeb) {
+    if (Flags & ELF::SHF_ARM_PURECODE)
+      OS << 'y';
+  }
 
   OS << '"';
 
@@ -137,6 +143,13 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
     OS << "progbits";
   else if (Type == ELF::SHT_X86_64_UNWIND)
     OS << "unwind";
+  else if (Type == ELF::SHT_MIPS_DWARF)
+    // Print hex value of the flag while we do not have
+    // any standard symbolic representation of the flag.
+    OS << "0x7000001e";
+  else
+    report_fatal_error("unsupported type 0x" + Twine::utohexstr(Type) +
+                       " for section " + getSectionName());
 
   if (EntrySize) {
     assert(Flags & ELF::SHF_MERGE);
@@ -149,6 +162,12 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
     OS << ",comdat";
   }
 
+  if (Flags & ELF::SHF_LINK_ORDER) {
+    assert(AssociatedSymbol);
+    OS << ",";
+    printName(OS, AssociatedSymbol->getName());
+  }
+
   if (isUnique())
     OS << ",unique," << UniqueID;