Move the Mips only bits of the ELF writer to lib/Target/Mips.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147133 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
new file mode 100644
index 0000000..9c2f81e
--- /dev/null
+++ b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
@@ -0,0 +1,137 @@
+//===-- MipsELFObjectWriter.cpp - Mips ELF Writer ---------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MCTargetDesc/MipsFixupKinds.h"
+#include "MCTargetDesc/MipsMCTargetDesc.h"
+#include "llvm/MC/MCELFObjectWriter.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCValue.h"
+#include "llvm/Support/ErrorHandling.h"
+
+using namespace llvm;
+
+namespace {
+ class MipsELFObjectWriter : public MCELFObjectTargetWriter {
+ public:
+ MipsELFObjectWriter(uint8_t OSABI);
+
+ virtual ~MipsELFObjectWriter();
+
+ virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
+ bool IsPCRel, bool IsRelocWithSymbol,
+ int64_t Addend) const;
+ virtual unsigned getEFlags() const;
+ virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
+ const MCValue &Target,
+ const MCFragment &F,
+ const MCFixup &Fixup,
+ bool IsPCRel) const;
+ };
+}
+
+MipsELFObjectWriter::MipsELFObjectWriter(uint8_t OSABI)
+ : MCELFObjectTargetWriter(/*Is64Bit*/ false, OSABI, ELF::EM_MIPS,
+ /*HasRelocationAddend*/ false) {}
+
+MipsELFObjectWriter::~MipsELFObjectWriter() {}
+
+// FIXME: get the real EABI Version from the Triple.
+unsigned MipsELFObjectWriter::getEFlags() const {
+ return ELF::EF_MIPS_NOREORDER | ELF::EF_MIPS_ARCH_32R2;
+}
+
+const MCSymbol *MipsELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
+ const MCValue &Target,
+ const MCFragment &F,
+ const MCFixup &Fixup,
+ bool IsPCRel) const {
+ assert(Target.getSymA() && "SymA cannot be 0.");
+ const MCSymbol &Sym = Target.getSymA()->getSymbol();
+
+ if (Sym.getSection().getKind().isMergeableCString() ||
+ Sym.getSection().getKind().isMergeableConst())
+ return &Sym;
+
+ return NULL;
+}
+
+unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target,
+ const MCFixup &Fixup,
+ bool IsPCRel,
+ bool IsRelocWithSymbol,
+ int64_t Addend) const {
+ // determine the type of the relocation
+ unsigned Type = (unsigned)ELF::R_MIPS_NONE;
+ unsigned Kind = (unsigned)Fixup.getKind();
+
+ switch (Kind) {
+ default:
+ llvm_unreachable("invalid fixup kind!");
+ case FK_Data_4:
+ Type = ELF::R_MIPS_32;
+ break;
+ case FK_GPRel_4:
+ Type = ELF::R_MIPS_GPREL32;
+ break;
+ case Mips::fixup_Mips_GPREL16:
+ Type = ELF::R_MIPS_GPREL16;
+ break;
+ case Mips::fixup_Mips_26:
+ Type = ELF::R_MIPS_26;
+ break;
+ case Mips::fixup_Mips_CALL16:
+ Type = ELF::R_MIPS_CALL16;
+ break;
+ case Mips::fixup_Mips_GOT_Global:
+ case Mips::fixup_Mips_GOT_Local:
+ Type = ELF::R_MIPS_GOT16;
+ break;
+ case Mips::fixup_Mips_HI16:
+ Type = ELF::R_MIPS_HI16;
+ break;
+ case Mips::fixup_Mips_LO16:
+ Type = ELF::R_MIPS_LO16;
+ break;
+ case Mips::fixup_Mips_TLSGD:
+ Type = ELF::R_MIPS_TLS_GD;
+ break;
+ case Mips::fixup_Mips_GOTTPREL:
+ Type = ELF::R_MIPS_TLS_GOTTPREL;
+ break;
+ case Mips::fixup_Mips_TPREL_HI:
+ Type = ELF::R_MIPS_TLS_TPREL_HI16;
+ break;
+ case Mips::fixup_Mips_TPREL_LO:
+ Type = ELF::R_MIPS_TLS_TPREL_LO16;
+ break;
+ case Mips::fixup_Mips_TLSLDM:
+ Type = ELF::R_MIPS_TLS_LDM;
+ break;
+ case Mips::fixup_Mips_DTPREL_HI:
+ Type = ELF::R_MIPS_TLS_DTPREL_HI16;
+ break;
+ case Mips::fixup_Mips_DTPREL_LO:
+ Type = ELF::R_MIPS_TLS_DTPREL_LO16;
+ break;
+ case Mips::fixup_Mips_Branch_PCRel:
+ case Mips::fixup_Mips_PC16:
+ Type = ELF::R_MIPS_PC16;
+ break;
+ }
+
+ return Type;
+}
+
+MCObjectWriter *llvm::createMipsELFObjectWriter(raw_ostream &OS,
+ bool IsLittleEndian,
+ uint8_t OSABI) {
+ MCELFObjectTargetWriter *MOTW = new MipsELFObjectWriter(OSABI);
+ return createELFObjectWriter(MOTW, OS, IsLittleEndian);
+}