Properly emit ctors / dtors with priorities into desired sections

and let linker handle the rest.

This finally fixes PR5329



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148990 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 33 insertions, 2 deletions

diff --git a/lib/Target/ARM/ARMTargetObjectFile.cpp b/lib/Target/ARM/ARMTargetObjectFile.cpp
index 721a225183..a5ea1c202e 100644
--- a/lib/Target/ARM/ARMTargetObjectFile.cpp
+++ b/lib/Target/ARM/ARMTargetObjectFile.cpp
@@ -14,6 +14,7 @@
 #include "llvm/Support/Dwarf.h"
 #include "llvm/Support/ELF.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/ADT/StringExtras.h"
 using namespace llvm;
 using namespace dwarf;
 
@@ -24,8 +25,9 @@ using namespace dwarf;
 void ARMElfTargetObjectFile::Initialize(MCContext &Ctx,
                                         const TargetMachine &TM) {
   TargetLoweringObjectFileELF::Initialize(Ctx, TM);
+  isAAPCS_ABI = TM.getSubtarget<ARMSubtarget>().isAAPCS_ABI();
 
-  if (TM.getSubtarget<ARMSubtarget>().isAAPCS_ABI()) {
+  if (isAAPCS_ABI) {
     StaticCtorSection =
       getContext().getELFSection(".init_array", ELF::SHT_INIT_ARRAY,
                                  ELF::SHF_WRITE |
@@ -36,7 +38,6 @@ void ARMElfTargetObjectFile::Initialize(MCContext &Ctx,
                                  ELF::SHF_WRITE |
                                  ELF::SHF_ALLOC,
                                  SectionKind::getDataRel());
-    StructorOutputOrder = Structors::PriorityOrder;
     LSDASection = NULL;
   }
 
@@ -46,3 +47,33 @@ void ARMElfTargetObjectFile::Initialize(MCContext &Ctx,
                                0,
                                SectionKind::getMetadata());
 }
+
+const MCSection *
+ARMElfTargetObjectFile::getStaticCtorSection(unsigned Priority) const {
+  if (!isAAPCS_ABI)
+    return TargetLoweringObjectFileELF::getStaticCtorSection(Priority);
+
+  if (Priority == 65535)
+    return StaticCtorSection;
+
+  // Emit ctors in priority order.
+  std::string Name = std::string(".init_array.") + utostr(Priority);
+  return getContext().getELFSection(Name, ELF::SHT_INIT_ARRAY,
+                                    ELF::SHF_ALLOC | ELF::SHF_WRITE,
+                                    SectionKind::getDataRel());
+}
+
+const MCSection *
+ARMElfTargetObjectFile::getStaticDtorSection(unsigned Priority) const {
+  if (!isAAPCS_ABI)
+    return TargetLoweringObjectFileELF::getStaticDtorSection(Priority);
+
+  if (Priority == 65535)
+    return StaticDtorSection;
+
+  // Emit dtors in priority order.
+  std::string Name = std::string(".fini_array.") + utostr(Priority);
+  return getContext().getELFSection(Name, ELF::SHT_FINI_ARRAY,
+                                    ELF::SHF_ALLOC | ELF::SHF_WRITE,
+                                    SectionKind::getDataRel());
+}