Move code only used by codegen out of MC. NFC.

MC itself never needs to know about these sections.

llvm-svn: 279965

1 files changed, 55 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 5f814c957e9..fdd8dca5b9f 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -446,13 +446,20 @@ const MCExpr *TargetLoweringObjectFileELF::lowerRelativeReference(
 void
 TargetLoweringObjectFileELF::InitializeELF(bool UseInitArray_) {
   UseInitArray = UseInitArray_;
-  if (!UseInitArray)
+  MCContext &Ctx = getContext();
+  if (!UseInitArray) {
+    StaticCtorSection = Ctx.getELFSection(".ctors", ELF::SHT_PROGBITS,
+                                          ELF::SHF_ALLOC | ELF::SHF_WRITE);
+
+    StaticDtorSection = Ctx.getELFSection(".dtors", ELF::SHT_PROGBITS,
+                                          ELF::SHF_ALLOC | ELF::SHF_WRITE);
     return;
+  }
 
-  StaticCtorSection = getContext().getELFSection(
-      ".init_array", ELF::SHT_INIT_ARRAY, ELF::SHF_WRITE | ELF::SHF_ALLOC);
-  StaticDtorSection = getContext().getELFSection(
-      ".fini_array", ELF::SHT_FINI_ARRAY, ELF::SHF_WRITE | ELF::SHF_ALLOC);
+  StaticCtorSection = Ctx.getELFSection(".init_array", ELF::SHT_INIT_ARRAY,
+                                        ELF::SHF_WRITE | ELF::SHF_ALLOC);
+  StaticDtorSection = Ctx.getELFSection(".fini_array", ELF::SHT_FINI_ARRAY,
+                                        ELF::SHF_WRITE | ELF::SHF_ALLOC);
 }
 
 //===----------------------------------------------------------------------===//
@@ -464,6 +471,24 @@ TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
   SupportIndirectSymViaGOTPCRel = true;
 }
 
+void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
+                                               const TargetMachine &TM) {
+  TargetLoweringObjectFile::Initialize(Ctx, TM);
+  if (!TM.isPositionIndependent()) {
+    StaticCtorSection = Ctx.getMachOSection("__TEXT", "__constructor", 0,
+                                            SectionKind::getData());
+    StaticDtorSection = Ctx.getMachOSection("__TEXT", "__destructor", 0,
+                                            SectionKind::getData());
+  } else {
+    StaticCtorSection = Ctx.getMachOSection("__DATA", "__mod_init_func",
+                                            MachO::S_MOD_INIT_FUNC_POINTERS,
+                                            SectionKind::getData());
+    StaticDtorSection = Ctx.getMachOSection("__DATA", "__mod_term_func",
+                                            MachO::S_MOD_TERM_FUNC_POINTERS,
+                                            SectionKind::getData());
+  }
+}
+
 /// emitModuleFlags - Perform code emission for module flags.
 void TargetLoweringObjectFileMachO::
 emitModuleFlags(MCStreamer &Streamer,
@@ -1052,6 +1077,31 @@ emitModuleFlags(MCStreamer &Streamer,
   }
 }
 
+void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
+                                              const TargetMachine &TM) {
+  TargetLoweringObjectFile::Initialize(Ctx, TM);
+  const Triple &T = TM.getTargetTriple();
+  if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
+    StaticCtorSection =
+        Ctx.getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                           COFF::IMAGE_SCN_MEM_READ,
+                           SectionKind::getReadOnly());
+    StaticDtorSection =
+        Ctx.getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                           COFF::IMAGE_SCN_MEM_READ,
+                           SectionKind::getReadOnly());
+  } else {
+    StaticCtorSection = Ctx.getCOFFSection(
+        ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                      COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
+        SectionKind::getData());
+    StaticDtorSection = Ctx.getCOFFSection(
+        ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                      COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
+        SectionKind::getData());
+  }
+}
+
 MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
     unsigned Priority, const MCSymbol *KeySym) const {
   return getContext().getAssociativeCOFFSection(