MC: Don't assume incoming StringRef's are null terminated.

[oota-llvm.git] / lib / MC / MCObjectFileInfo.cpp

diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 79ebad15e670fa93d969f85c3b53b63207281235..958648c656ef47a7e9eca2f3c0bb21ee3f50bcb3 100644 (file)
--- 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,
@@ -198,6 +202,14 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
     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,
@@ -288,13 +300,29 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
       FDEEncoding = dwarf::DW_EH_PE_udata4;
       TTypeEncoding = dwarf::DW_EH_PE_absptr;
     }
-  } else if (T.getArch() == Triple::ppc64) {
+  } 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;
     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
@@ -418,6 +446,12 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
   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,
@@ -479,6 +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 |
@@ -568,6 +608,16 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         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 |