Fix MSVC warning.
[oota-llvm.git] / lib / MC / MCObjectFileInfo.cpp
index 5d7a5f886324c5b4c48650725fa09581f8a01bf5..3b011c8bc5a222eb0f23b583533dc26931ff4330 100644 (file)
@@ -22,6 +22,9 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   IsFunctionEHFrameSymbolPrivate = false;
   SupportsWeakOmittedEHFrame = false;
 
+  if (T.isOSDarwin() && T.getArch() == Triple::arm64)
+    SupportsCompactUnwindWithoutEHFrame = true;
+
   PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
     | dwarf::DW_EH_PE_sdata4;
   LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
@@ -34,7 +37,7 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
 
   TextSection // .text
     = Ctx->getMachOSection("__TEXT", "__text",
-                           MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+                           MachO::S_ATTR_PURE_INSTRUCTIONS,
                            SectionKind::getText());
   DataSection // .data
     = Ctx->getMachOSection("__DATA", "__data", 0,
@@ -45,50 +48,44 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
 
   TLSDataSection // .tdata
     = Ctx->getMachOSection("__DATA", "__thread_data",
-                           MCSectionMachO::S_THREAD_LOCAL_REGULAR,
+                           MachO::S_THREAD_LOCAL_REGULAR,
                            SectionKind::getDataRel());
   TLSBSSSection // .tbss
     = Ctx->getMachOSection("__DATA", "__thread_bss",
-                           MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
+                           MachO::S_THREAD_LOCAL_ZEROFILL,
                            SectionKind::getThreadBSS());
 
   // TODO: Verify datarel below.
   TLSTLVSection // .tlv
     = Ctx->getMachOSection("__DATA", "__thread_vars",
-                           MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
+                           MachO::S_THREAD_LOCAL_VARIABLES,
                            SectionKind::getDataRel());
 
   TLSThreadInitSection
     = Ctx->getMachOSection("__DATA", "__thread_init",
-                          MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
+                          MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
                           SectionKind::getDataRel());
 
   CStringSection // .cstring
     = Ctx->getMachOSection("__TEXT", "__cstring",
-                           MCSectionMachO::S_CSTRING_LITERALS,
+                           MachO::S_CSTRING_LITERALS,
                            SectionKind::getMergeable1ByteCString());
   UStringSection
     = Ctx->getMachOSection("__TEXT","__ustring", 0,
                            SectionKind::getMergeable2ByteCString());
   FourByteConstantSection // .literal4
     = Ctx->getMachOSection("__TEXT", "__literal4",
-                           MCSectionMachO::S_4BYTE_LITERALS,
+                           MachO::S_4BYTE_LITERALS,
                            SectionKind::getMergeableConst4());
   EightByteConstantSection // .literal8
     = Ctx->getMachOSection("__TEXT", "__literal8",
-                           MCSectionMachO::S_8BYTE_LITERALS,
+                           MachO::S_8BYTE_LITERALS,
                            SectionKind::getMergeableConst8());
 
-  // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
-  // to using it in -static mode.
-  SixteenByteConstantSection = 0;
-  if (RelocM != Reloc::Static &&
-      T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64 &&
-      T.getArch() != Triple::ppc64le)
-    SixteenByteConstantSection =   // .literal16
-      Ctx->getMachOSection("__TEXT", "__literal16",
-                           MCSectionMachO::S_16BYTE_LITERALS,
-                           SectionKind::getMergeableConst16());
+  SixteenByteConstantSection // .literal16
+      = Ctx->getMachOSection("__TEXT", "__literal16",
+                             MachO::S_16BYTE_LITERALS,
+                             SectionKind::getMergeableConst16());
 
   ReadOnlySection  // .const
     = Ctx->getMachOSection("__TEXT", "__const", 0,
@@ -96,36 +93,36 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
 
   TextCoalSection
     = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
-                           MCSectionMachO::S_COALESCED |
-                           MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+                           MachO::S_COALESCED |
+                           MachO::S_ATTR_PURE_INSTRUCTIONS,
                            SectionKind::getText());
   ConstTextCoalSection
     = Ctx->getMachOSection("__TEXT", "__const_coal",
-                           MCSectionMachO::S_COALESCED,
+                           MachO::S_COALESCED,
                            SectionKind::getReadOnly());
   ConstDataSection  // .const_data
     = Ctx->getMachOSection("__DATA", "__const", 0,
                            SectionKind::getReadOnlyWithRel());
   DataCoalSection
     = Ctx->getMachOSection("__DATA","__datacoal_nt",
-                           MCSectionMachO::S_COALESCED,
+                           MachO::S_COALESCED,
                            SectionKind::getDataRel());
   DataCommonSection
     = Ctx->getMachOSection("__DATA","__common",
-                           MCSectionMachO::S_ZEROFILL,
+                           MachO::S_ZEROFILL,
                            SectionKind::getBSS());
   DataBSSSection
-    = Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
+    = Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
                            SectionKind::getBSS());
 
 
   LazySymbolPointerSection
     = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
-                           MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
+                           MachO::S_LAZY_SYMBOL_POINTERS,
                            SectionKind::getMetadata());
   NonLazySymbolPointerSection
     = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
-                           MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
+                           MachO::S_NON_LAZY_SYMBOL_POINTERS,
                            SectionKind::getMetadata());
 
   if (RelocM == Reloc::Static) {
@@ -138,11 +135,11 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   } else {
     StaticCtorSection
       = Ctx->getMachOSection("__DATA", "__mod_init_func",
-                             MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
+                             MachO::S_MOD_INIT_FUNC_POINTERS,
                              SectionKind::getDataRel());
     StaticDtorSection
       = Ctx->getMachOSection("__DATA", "__mod_term_func",
-                             MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
+                             MachO::S_MOD_TERM_FUNC_POINTERS,
                              SectionKind::getDataRel());
   }
 
@@ -150,90 +147,95 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
                                      SectionKind::getReadOnlyWithRel());
 
-  if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) {
+  COFFDebugSymbolsSection = 0;
+
+  if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
+      (T.isOSDarwin() && T.getArch() == Triple::arm64)) {
     CompactUnwindSection =
       Ctx->getMachOSection("__LD", "__compact_unwind",
-                           MCSectionMachO::S_ATTR_DEBUG,
+                           MachO::S_ATTR_DEBUG,
                            SectionKind::getReadOnly());
 
     if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
       CompactUnwindDwarfEHFrameOnly = 0x04000000;
+    else if (T.getArch() == Triple::arm64)
+      CompactUnwindDwarfEHFrameOnly = 0x03000000;
   }
 
   // Debug Information.
   DwarfAccelNamesSection =
     Ctx->getMachOSection("__DWARF", "__apple_names",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfAccelObjCSection =
     Ctx->getMachOSection("__DWARF", "__apple_objc",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   // 16 character section limit...
   DwarfAccelNamespaceSection =
     Ctx->getMachOSection("__DWARF", "__apple_namespac",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfAccelTypesSection =
     Ctx->getMachOSection("__DWARF", "__apple_types",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
 
   DwarfAbbrevSection =
     Ctx->getMachOSection("__DWARF", "__debug_abbrev",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfInfoSection =
     Ctx->getMachOSection("__DWARF", "__debug_info",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfLineSection =
     Ctx->getMachOSection("__DWARF", "__debug_line",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfFrameSection =
     Ctx->getMachOSection("__DWARF", "__debug_frame",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfPubNamesSection =
     Ctx->getMachOSection("__DWARF", "__debug_pubnames",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfPubTypesSection =
     Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfGnuPubNamesSection =
     Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfGnuPubTypesSection =
     Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfStrSection =
     Ctx->getMachOSection("__DWARF", "__debug_str",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfLocSection =
     Ctx->getMachOSection("__DWARF", "__debug_loc",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfARangesSection =
     Ctx->getMachOSection("__DWARF", "__debug_aranges",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfRangesSection =
     Ctx->getMachOSection("__DWARF", "__debug_ranges",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfMacroInfoSection =
     Ctx->getMachOSection("__DWARF", "__debug_macinfo",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   DwarfDebugInlineSection =
     Ctx->getMachOSection("__DWARF", "__debug_inlined",
-                         MCSectionMachO::S_ATTR_DEBUG,
+                         MachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
   StackMapSection =
     Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps", 0,
@@ -287,7 +289,8 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
       TTypeEncoding = (CMModel == CodeModel::Small)
         ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
     }
-  }  else if (T.getArch() ==  Triple::aarch64) {
+  }  else if (T.getArch() == Triple::aarch64 ||
+              T.getArch() == Triple::aarch64_be ) {
     // The small model guarantees static code/data size < 4GB, but not where it
     // will be in memory. Most of these could end up >2GB away so even a signed
     // pc-relative 32-bit address is insufficient, theoretically.
@@ -311,6 +314,33 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
     FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
     TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
       dwarf::DW_EH_PE_udata8;
+  } else if (T.getArch() == Triple::sparc) {
+    if (RelocM == Reloc::PIC_) {
+      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata4;
+      FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata4;
+    } else {
+      LSDAEncoding = dwarf::DW_EH_PE_absptr;
+      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_udata4;
+      TTypeEncoding = dwarf::DW_EH_PE_absptr;
+    }
+  } else if (T.getArch() == Triple::sparcv9) {
+    LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+    if (RelocM == Reloc::PIC_) {
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata4;
+      FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata4;
+    } else {
+      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_udata4;
+      TTypeEncoding = dwarf::DW_EH_PE_absptr;
+    }
   } else if (T.getArch() == Triple::systemz) {
     // All currently-defined code models guarantee that 4-byte PC-relative
     // values will be in range.
@@ -431,6 +461,8 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
                        ELF::SHF_ALLOC,
                        SectionKind::getReadOnly());
 
+  COFFDebugSymbolsSection = 0;
+
   // Debug Info Sections.
   DwarfAbbrevSection =
     Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
@@ -540,7 +572,7 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
                         COFF::IMAGE_SCN_MEM_READ,
                         SectionKind::getReadOnly());
-  if (T.getOS() == Triple::Win32) {
+  if (T.isKnownWindowsMSVCEnvironment()) {
     StaticCtorSection =
       Ctx->getCOFFSection(".CRT$XCU",
                           COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
@@ -556,7 +588,7 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
   }
 
 
-  if (T.getOS() == Triple::Win32) {
+  if (T.isKnownWindowsMSVCEnvironment()) {
     StaticDtorSection =
       Ctx->getCOFFSection(".CRT$XTX",
                           COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
@@ -582,6 +614,13 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         SectionKind::getReadOnly());
 
   // Debug info.
+  COFFDebugSymbolsSection =
+    Ctx->getCOFFSection(".debug$S",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+
   DwarfAbbrevSection =
     Ctx->getCOFFSection(".debug_abbrev",
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |
@@ -647,6 +686,33 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |
                         COFF::IMAGE_SCN_MEM_READ,
                         SectionKind::getMetadata());
+  DwarfInfoDWOSection =
+      Ctx->getCOFFSection(".debug_info.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                                COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfAbbrevDWOSection =
+      Ctx->getCOFFSection(".debug_abbrev.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                                  COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfStrDWOSection =
+      Ctx->getCOFFSection(".debug_str.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                               COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfLineDWOSection =
+      Ctx->getCOFFSection(".debug_line.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                                COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfLocDWOSection =
+      Ctx->getCOFFSection(".debug_loc.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                               COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfStrOffDWOSection =
+      Ctx->getCOFFSection(".debug_str_offsets.dwo", COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                                  COFF::IMAGE_SCN_MEM_READ,
+                          SectionKind::getMetadata());
+  DwarfAddrSection = Ctx->getCOFFSection(
+      ".debug_addr", COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_MEM_READ,
+      SectionKind::getMetadata());
 
   DrectveSection =
     Ctx->getCOFFSection(".drectve",
@@ -683,6 +749,7 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
   CommDirectiveSupportsAlignment = true;
   SupportsWeakOmittedEHFrame = true;
   IsFunctionEHFrameSymbolPrivate = true;
+  SupportsCompactUnwindWithoutEHFrame = false;
 
   PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
     TTypeEncoding = dwarf::DW_EH_PE_absptr;
@@ -702,15 +769,14 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
   // cellspu-apple-darwin. Perhaps we should fix in Triple?
   if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
        Arch == Triple::arm || Arch == Triple::thumb ||
+       Arch == Triple::arm64 ||
        Arch == Triple::ppc || Arch == Triple::ppc64 ||
        Arch == Triple::UnknownArch) &&
-      (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
+      (T.isOSDarwin() || T.isOSBinFormatMachO())) {
     Env = IsMachO;
     InitMachOMCObjectFileInfo(T);
   } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
-             (T.getEnvironment() != Triple::ELF) &&
-             (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
-              T.getOS() == Triple::Win32)) {
+             T.getObjectFormat() != Triple::ELF && T.isOSWindows()) {
     Env = IsCOFF;
     InitCOFFMCObjectFileInfo(T);
   } else {
@@ -726,18 +792,19 @@ const MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
 
 const MCSection *
 MCObjectFileInfo::getDwarfTypesDWOSection(uint64_t Hash) const {
-  return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_GROUP, 0,
-                            SectionKind::getMetadata(), 0, utostr(Hash));
+  return Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS,
+                            ELF::SHF_GROUP, SectionKind::getMetadata(), 0,
+                            utostr(Hash));
 }
 
 void MCObjectFileInfo::InitEHFrameSection() {
   if (Env == IsMachO)
     EHFrameSection =
       Ctx->getMachOSection("__TEXT", "__eh_frame",
-                           MCSectionMachO::S_COALESCED |
-                           MCSectionMachO::S_ATTR_NO_TOC |
-                           MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
-                           MCSectionMachO::S_ATTR_LIVE_SUPPORT,
+                           MachO::S_COALESCED |
+                           MachO::S_ATTR_NO_TOC |
+                           MachO::S_ATTR_STRIP_STATIC_SYMS |
+                           MachO::S_ATTR_LIVE_SUPPORT,
                            SectionKind::getReadOnly());
   else if (Env == IsELF)
     EHFrameSection =