For mips64 switch statements in subroutines could generate

[oota-llvm.git] / lib / Target / Mips / MCTargetDesc / MipsELFObjectWriter.cpp

diff --git a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
index f12f9af7471a837f78c4aa8ed69811ad87da70df..5d240fe847039ac9cc459e52fd4acc0d4dda73b3 100644 (file)
--- a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
@@ -34,7 +34,8 @@ namespace {
 
   class MipsELFObjectWriter : public MCELFObjectTargetWriter {
   public:
-    MipsELFObjectWriter(uint8_t OSABI);
+    MipsELFObjectWriter(bool _is64Bit, uint8_t OSABI,
+                        bool _isN64, bool IsLittleEndian);
 
     virtual ~MipsELFObjectWriter();
 
@@ -52,15 +53,25 @@ namespace {
   };
 }
 
-MipsELFObjectWriter::MipsELFObjectWriter(uint8_t OSABI)
-  : MCELFObjectTargetWriter(/*Is64Bit*/ false, OSABI, ELF::EM_MIPS,
-                            /*HasRelocationAddend*/ false) {}
+MipsELFObjectWriter::MipsELFObjectWriter(bool _is64Bit, uint8_t OSABI,
+                                         bool _isN64, bool IsLittleEndian)
+  : MCELFObjectTargetWriter(_is64Bit, OSABI, ELF::EM_MIPS,
+                            /*HasRelocationAddend*/ (_isN64) ? true : false,
+                            /*IsN64*/ _isN64) {}
 
 MipsELFObjectWriter::~MipsELFObjectWriter() {}
 
-// FIXME: get the real EABI Version from the Triple.
+// FIXME: get the real EABI Version from the Subtarget class.
 unsigned MipsELFObjectWriter::getEFlags() const {
-  return ELF::EF_MIPS_NOREORDER | ELF::EF_MIPS_ARCH_32R2;
+
+  // FIXME: We can't tell if we are PIC (dynamic) or CPIC (static)
+  unsigned Flag = ELF::EF_MIPS_NOREORDER;
+
+  if (is64Bit())
+    Flag |= ELF::EF_MIPS_ARCH_64R2;
+  else
+    Flag |= ELF::EF_MIPS_ARCH_32R2;
+  return Flag;
 }
 
 const MCSymbol *MipsELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
@@ -93,6 +104,9 @@ unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target,
   case FK_Data_4:
     Type = ELF::R_MIPS_32;
     break;
+  case FK_Data_8:
+    Type = ELF::R_MIPS_64;
+    break;
   case FK_GPRel_4:
     Type = ELF::R_MIPS_GPREL32;
     break;
@@ -140,8 +154,32 @@ unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target,
   case Mips::fixup_Mips_PC16:
     Type = ELF::R_MIPS_PC16;
     break;
+  case Mips::fixup_Mips_GOT_PAGE:
+    Type = ELF::R_MIPS_GOT_PAGE;
+    break;
+  case Mips::fixup_Mips_GOT_OFST:
+    Type = ELF::R_MIPS_GOT_OFST;
+    break;
+  case Mips::fixup_Mips_GOT_DISP:
+    Type = ELF::R_MIPS_GOT_DISP;
+    break;
+  case Mips::fixup_Mips_GPOFF_HI:
+    Type = setRType((unsigned)ELF::R_MIPS_GPREL16, Type);
+    Type = setRType2((unsigned)ELF::R_MIPS_SUB, Type);
+    Type = setRType3((unsigned)ELF::R_MIPS_HI16, Type);
+    break;
+  case Mips::fixup_Mips_GPOFF_LO:
+    Type = setRType((unsigned)ELF::R_MIPS_GPREL16, Type);
+    Type = setRType2((unsigned)ELF::R_MIPS_SUB, Type);
+    Type = setRType3((unsigned)ELF::R_MIPS_LO16, Type);
+    break;
+  case Mips::fixup_Mips_HIGHER:
+    Type = ELF::R_MIPS_HIGHER;
+    break;
+  case Mips::fixup_Mips_HIGHEST:
+    Type = ELF::R_MIPS_HIGHEST;
+    break;
   }
-
   return Type;
 }
 
@@ -176,10 +214,10 @@ static int CompareOffset(const RelEntry &R0, const RelEntry &R1) {
 
 void MipsELFObjectWriter::sortRelocs(const MCAssembler &Asm,
                                      std::vector<ELFRelocationEntry> &Relocs) {
-  // Call the defualt function first. Relocations are sorted in descending
+  // Call the default function first. Relocations are sorted in descending
   // order of r_offset.
   MCELFObjectTargetWriter::sortRelocs(Asm, Relocs);
-  
+
   RelLs RelocLs;
   std::vector<RelLsIter> Unmatched;
 
@@ -232,8 +270,12 @@ void MipsELFObjectWriter::sortRelocs(const MCAssembler &Asm,
     Relocs[--I] = R->Reloc;
 }
 
-MCObjectWriter *llvm::createMipsELFObjectWriter(raw_ostream &OS, uint8_t OSABI,
-                                                bool IsLittleEndian) {
-  MCELFObjectTargetWriter *MOTW = new MipsELFObjectWriter(OSABI);
+MCObjectWriter *llvm::createMipsELFObjectWriter(raw_ostream &OS,
+                                                uint8_t OSABI,
+                                                bool IsLittleEndian,
+                                                bool Is64Bit) {
+  MCELFObjectTargetWriter *MOTW = new MipsELFObjectWriter(Is64Bit, OSABI,
+                                                (Is64Bit) ? true : false,
+                                                IsLittleEndian);
   return createELFObjectWriter(MOTW, OS, IsLittleEndian);
 }