X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCObjectFileInfo.cpp;h=958648c656ef47a7e9eca2f3c0bb21ee3f50bcb3;hb=6a2f9b91379140c36a11ade6c0673bd7490eba32;hp=1f5548f7798fe7fcba48afcf3007c9d659eed3d7;hpb=72f7bfbf0e02bb11d3e7cca1f9598c5f9d9fa2ca;p=oota-llvm.git

diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 1f5548f7798..958648c656e 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -39,6 +39,9 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
     = Ctx->getMachOSection("__DATA", "__data", 0,
                            SectionKind::getDataRel());
 
+  // BSSSection might not be expected initialized on msvc.
+  BSSSection = 0;
+
   TLSDataSection // .tdata
     = Ctx->getMachOSection("__DATA", "__thread_data",
                            MCSectionMachO::S_THREAD_LOCAL_REGULAR,
@@ -79,7 +82,8 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   // to using it in -static mode.
   SixteenByteConstantSection = 0;
   if (RelocM != Reloc::Static &&
-      T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64)
+      T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64 &&
+      T.getArch() != Triple::ppc64le)
     SixteenByteConstantSection =   // .literal16
       Ctx->getMachOSection("__TEXT", "__literal16",
                            MCSectionMachO::S_16BYTE_LITERALS,
@@ -145,12 +149,16 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
                                      SectionKind::getReadOnlyWithRel());
 
-  if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
+  if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) {
     CompactUnwindSection =
       Ctx->getMachOSection("__LD", "__compact_unwind",
                            MCSectionMachO::S_ATTR_DEBUG,
                            SectionKind::getReadOnly());
 
+    if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
+      CompactUnwindDwarfEHFrameOnly = 0x04000000;
+  }
+
   // Debug Information.
   DwarfAccelNamesSection =
     Ctx->getMachOSection("__DWARF", "__apple_names",
@@ -186,10 +194,22 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
     Ctx->getMachOSection("__DWARF", "__debug_frame",
                          MCSectionMachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_pubnames",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
   DwarfPubTypesSection =
     Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
                          MCSectionMachO::S_ATTR_DEBUG,
                          SectionKind::getMetadata());
+  DwarfGnuPubNamesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfGnuPubTypesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
   DwarfStrSection =
     Ctx->getMachOSection("__DWARF", "__debug_str",
                          MCSectionMachO::S_ATTR_DEBUG,
@@ -219,6 +239,15 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
 }
 
 void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+  if (T.getArch() == Triple::mips ||
+      T.getArch() == Triple::mipsel)
+    FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
+  else if (T.getArch() == Triple::mips64 ||
+           T.getArch() == Triple::mips64el)
+    FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
+  else
+    FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+
   if (T.getArch() == Triple::x86) {
     PersonalityEncoding = (RelocM == Reloc::PIC_)
      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
@@ -226,15 +255,13 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
     LSDAEncoding = (RelocM == Reloc::PIC_)
       ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
       : dwarf::DW_EH_PE_absptr;
-    FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_)
+    FDEEncoding = (RelocM == Reloc::PIC_)
       ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
       : dwarf::DW_EH_PE_absptr;
     TTypeEncoding = (RelocM == Reloc::PIC_)
      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
      : dwarf::DW_EH_PE_absptr;
   } else if (T.getArch() == Triple::x86_64) {
-    FDECFIEncoding = 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 |
         ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
@@ -256,14 +283,46 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
       TTypeEncoding = (CMModel == CodeModel::Small)
         ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
     }
-  } else if (T.getArch() == Triple::ppc64) {
+  }  else if (T.getArch() ==  Triple::aarch64) {
+    // 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.
+    if (RelocM == Reloc::PIC_) {
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata8;
+      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
+      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_sdata8;
+    } else {
+      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
+      LSDAEncoding = dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_udata4;
+      TTypeEncoding = dwarf::DW_EH_PE_absptr;
+    }
+  } else if (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le) {
     PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
       dwarf::DW_EH_PE_udata8;
-    FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
     LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
     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::systemz) {
+    // All currently-defined code models guarantee that 4-byte PC-relative
+    // values will be in range.
+    if (RelocM == Reloc::PIC_) {
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        dwarf::DW_EH_PE_sdata4;
+      LSDAEncoding = 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;
+      LSDAEncoding = dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_absptr;
+      TTypeEncoding = dwarf::DW_EH_PE_absptr;
+    }
   }
 
   // Solaris requires different flags for .eh_frame to seemingly every other
@@ -381,9 +440,18 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
   DwarfFrameSection =
     Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
   DwarfPubTypesSection =
     Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+  DwarfGnuPubNamesSection =
+    Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfGnuPubTypesSection =
+    Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
   DwarfStrSection =
     Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
                        ELF::SHF_MERGE | ELF::SHF_STRINGS,
@@ -445,6 +513,12 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
 
 void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
   // COFF
+  BSSSection =
+    Ctx->getCOFFSection(".bss",
+                        COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getBSS());
   TextSection =
     Ctx->getCOFFSection(".text",
                         COFF::IMAGE_SCN_CNT_CODE |
@@ -524,11 +598,26 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |
                         COFF::IMAGE_SCN_MEM_READ,
                         SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getCOFFSection(".debug_pubnames",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
   DwarfPubTypesSection =
     Ctx->getCOFFSection(".debug_pubtypes",
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |
                         COFF::IMAGE_SCN_MEM_READ,
                         SectionKind::getMetadata());
+  DwarfGnuPubNamesSection =
+    Ctx->getCOFFSection(".debug_gnu_pubnames",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfGnuPubTypesSection =
+    Ctx->getCOFFSection(".debug_gnu_pubtypes",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
   DwarfStrSection =
     Ctx->getCOFFSection(".debug_str",
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |
@@ -594,6 +683,8 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
   PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
     TTypeEncoding = dwarf::DW_EH_PE_absptr;
 
+  CompactUnwindDwarfEHFrameOnly = 0;
+
   EHFrameSection = 0;             // Created on demand.
   CompactUnwindSection = 0;       // Used only by selected targets.
   DwarfAccelNamesSection = 0;     // Used only by selected targets.