Add AArch64 as an experimental target.

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

diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 2e1604d6b506b11f93e610d3de508a56790d137b..ae0abde86ad6e9294ef06bc2279a5f9f3f4e9152 100644 (file)
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -8,12 +8,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCSection.h"
 #include "llvm/MC/MCSectionCOFF.h"
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/MC/MCSectionMachO.h"
-#include "llvm/ADT/Triple.h"
 using namespace llvm;
 
 void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
@@ -256,6 +256,33 @@ 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) {
+    FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+
+    // 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) {
+    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;
   }
 
   // Solaris requires different flags for .eh_frame to seemingly every other
@@ -392,6 +419,10 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
   DwarfMacroInfoSection =
     Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+
+  // DWARF5 Experimental Debug Info
+
+  // Accelerator Tables
   DwarfAccelNamesSection =
     Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
@@ -404,6 +435,30 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
   DwarfAccelTypesSection =
     Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+
+  // Fission Sections
+  DwarfInfoDWOSection =
+    Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfAbbrevDWOSection =
+    Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfStrDWOSection =
+    Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
+                       ELF::SHF_MERGE | ELF::SHF_STRINGS,
+                       SectionKind::getMergeable1ByteCString());
+  DwarfLineDWOSection =
+    Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfLocDWOSection =
+    Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfStrOffDWOSection =
+    Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfAddrSection =
+    Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
 }