Move the MBlaze ELF writer bits to lib/Target/MBlaze.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147129 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 85 insertions, 9 deletions

diff --git a/lib/Target/MBlaze/MCTargetDesc/CMakeLists.txt b/lib/Target/MBlaze/MCTargetDesc/CMakeLists.txt
index 6fa7f43..36134a6 100644
--- a/lib/Target/MBlaze/MCTargetDesc/CMakeLists.txt
+++ b/lib/Target/MBlaze/MCTargetDesc/CMakeLists.txt
@@ -3,6 +3,7 @@ add_llvm_library(LLVMMBlazeDesc
   MBlazeMCAsmInfo.cpp
   MBlazeMCCodeEmitter.cpp
   MBlazeMCTargetDesc.cpp
+  MBlazeELFObjectWriter.cpp
   )
 
 add_dependencies(LLVMMBlazeDesc MBlazeCommonTableGen)
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeAsmBackend.cpp b/lib/Target/MBlaze/MCTargetDesc/MBlazeAsmBackend.cpp
index c0c2106..72e6067 100644
--- a/lib/Target/MBlaze/MCTargetDesc/MBlazeAsmBackend.cpp
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeAsmBackend.cpp
@@ -39,12 +39,6 @@ static unsigned getFixupKindSize(unsigned Kind) {
 
 
 namespace {
-class MBlazeELFObjectWriter : public MCELFObjectTargetWriter {
-public:
-  MBlazeELFObjectWriter(uint8_t OSABI)
-    : MCELFObjectTargetWriter(/*is64Bit*/ false, OSABI, ELF::EM_MBLAZE,
-                              /*HasRelocationAddend*/ true) {}
-};
 
 class MBlazeAsmBackend : public MCAsmBackend {
 public:
@@ -131,8 +125,7 @@ public:
                   uint64_t Value) const;
 
   MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
-    return createELFObjectWriter(new MBlazeELFObjectWriter(OSABI), OS,
-                                 /*IsLittleEndian*/ false);
+    return createMBlazeELFObjectWriter(OS, OSABI);
   }
 };
 
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeELFObjectWriter.cpp b/lib/Target/MBlaze/MCTargetDesc/MBlazeELFObjectWriter.cpp
new file mode 100644
index 0000000..2824b3c
--- /dev/null
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeELFObjectWriter.cpp
@@ -0,0 +1,77 @@
+//===-- MBlazeELFObjectWriter.cpp - MBlaze 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/MBlazeMCTargetDesc.h"
+#include "llvm/MC/MCELFObjectWriter.h"
+#include "llvm/MC/MCFixup.h"
+#include "llvm/Support/ErrorHandling.h"
+
+using namespace llvm;
+
+namespace {
+  class MBlazeELFObjectWriter : public MCELFObjectTargetWriter {
+  public:
+    MBlazeELFObjectWriter(uint8_t OSABI);
+
+    virtual ~MBlazeELFObjectWriter();
+  protected:
+    virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
+                                  bool IsPCRel, bool IsRelocWithSymbol,
+                                  int64_t Addend) const;
+  };
+}
+
+MBlazeELFObjectWriter::MBlazeELFObjectWriter(uint8_t OSABI)
+  : MCELFObjectTargetWriter(/*Is64Bit*/ false, OSABI, ELF::EM_MBLAZE,
+                            /*HasRelocationAddend*/ false) {}
+
+MBlazeELFObjectWriter::~MBlazeELFObjectWriter() {
+}
+
+unsigned MBlazeELFObjectWriter::GetRelocType(const MCValue &Target,
+                                             const MCFixup &Fixup,
+                                             bool IsPCRel,
+                                             bool IsRelocWithSymbol,
+                                             int64_t Addend) const {
+  // determine the type of the relocation
+  unsigned Type;
+  if (IsPCRel) {
+    switch ((unsigned)Fixup.getKind()) {
+    default:
+      llvm_unreachable("Unimplemented");
+    case FK_PCRel_4:
+      Type = ELF::R_MICROBLAZE_64_PCREL;
+      break;
+    case FK_PCRel_2:
+      Type = ELF::R_MICROBLAZE_32_PCREL;
+      break;
+    }
+  } else {
+    switch ((unsigned)Fixup.getKind()) {
+    default: llvm_unreachable("invalid fixup kind!");
+    case FK_Data_4:
+      Type = ((IsRelocWithSymbol || Addend !=0)
+              ? ELF::R_MICROBLAZE_32
+              : ELF::R_MICROBLAZE_64);
+      break;
+    case FK_Data_2:
+      Type = ELF::R_MICROBLAZE_32;
+      break;
+    }
+  }
+  return Type;
+}
+
+
+
+MCObjectWriter *llvm::createMBlazeELFObjectWriter(raw_ostream &OS,
+                                                  uint8_t OSABI) {
+  MCELFObjectTargetWriter *MOTW = new MBlazeELFObjectWriter(OSABI);
+  return createELFObjectWriter(MOTW, OS,  /*IsLittleEndian=*/ false);
+}
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.h b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.h
index deff5cb..088d163 100644
--- a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.h
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCTargetDesc.h
@@ -14,24 +14,29 @@
 #ifndef MBLAZEMCTARGETDESC_H
 #define MBLAZEMCTARGETDESC_H
 
+#include "llvm/Support/DataTypes.h"
+
 namespace llvm {
 class MCAsmBackend;
 class MCContext;
 class MCCodeEmitter;
 class MCInstrInfo;
+class MCObjectWriter;
 class MCSubtargetInfo;
 class Target;
 class StringRef;
 class formatted_raw_ostream;
+class raw_ostream;
 
 extern Target TheMBlazeTarget;
 
 MCCodeEmitter *createMBlazeMCCodeEmitter(const MCInstrInfo &MCII,
                                          const MCSubtargetInfo &STI,
                                          MCContext &Ctx);
-  
+
 MCAsmBackend *createMBlazeAsmBackend(const Target &T, StringRef TT);
 
+MCObjectWriter *createMBlazeELFObjectWriter(raw_ostream &OS, uint8_t OSABI);
 } // End llvm namespace
 
 // Defines symbolic names for MBlaze registers.  This defines a mapping from