fix COFF targets (mingw/cygwin) to provide ehframe and LSDA sections
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79346 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfException.cpp b/lib/CodeGen/AsmPrinter/DwarfException.cpp
index 7ab0bb0..06dfac4 100644
--- a/lib/CodeGen/AsmPrinter/DwarfException.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfException.cpp
@@ -56,10 +56,7 @@
TD->getPointerSize() : -TD->getPointerSize();
// Begin eh frame section.
- // FIXME: THIS IS A HORRIBLE HACK. MingW isn't specifying an EHFrame section.
- if (const MCSection *EHFrameSec =
- Asm->getObjFileLowering().getEHFrameSection())
- Asm->SwitchToSection(EHFrameSec);
+ Asm->SwitchToSection(Asm->getObjFileLowering().getEHFrameSection());
if (TAI->is_EHSymbolPrivate())
O << TAI->getPrivateGlobalPrefix();
@@ -153,10 +150,7 @@
const Function *TheFunc = EHFrameInfo.function;
- // FIXME: THIS IS A HORRIBLE HACK. MingW isn't specifying an EHFrame section.
- if (const MCSection *EHFrameSec =
- Asm->getObjFileLowering().getEHFrameSection())
- Asm->SwitchToSection(EHFrameSec);
+ Asm->SwitchToSection(Asm->getObjFileLowering().getEHFrameSection());
// Externally visible entry into the functions eh frame info. If the
// corresponding function is static, this should not be externally visible.
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 67fbc1f..84b1b93 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -963,6 +963,14 @@
StaticDtorSection =
getCOFFSection(".dtors", false, SectionKind::getDataRel());
+ // FIXME: We're emitting LSDA info into a readonly section on COFF, even
+ // though it contains relocatable pointers. In PIC mode, this is probably a
+ // big runtime hit for C++ apps. Either the contents of the LSDA need to be
+ // adjusted or this should be a data section.
+ LSDASection =
+ getCOFFSection(".gcc_except_table", false, SectionKind::getReadOnly());
+ EHFrameSection =
+ getCOFFSection(".eh_frame", false, SectionKind::getDataRel());
// Debug info.
// FIXME: Don't use 'directive' mode here.