Mark Target's creation routines as const.

[oota-llvm.git] / include / llvm / Target / TargetELFWriterInfo.h

diff --git a/include/llvm/Target/TargetELFWriterInfo.h b/include/llvm/Target/TargetELFWriterInfo.h
index ba44f4adba84c72c796f22a13163644d69884ed8..a5b30c4f6e3d6db8a7f0deed5f78dbeb9ac0a149 100644 (file)
--- a/include/llvm/Target/TargetELFWriterInfo.h
+++ b/include/llvm/Target/TargetELFWriterInfo.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Bill Wendling and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -15,27 +15,91 @@
 #define LLVM_TARGET_TARGETELFWRITERINFO_H
 
 namespace llvm {
-
-  class MachineBasicBlock;
+  class Function;
+  class TargetData;
+  class TargetMachine;
 
   //===--------------------------------------------------------------------===//
   //                          TargetELFWriterInfo
   //===--------------------------------------------------------------------===//
 
   class TargetELFWriterInfo {
+  protected:
     // EMachine - This field is the target specific value to emit as the
     // e_machine member of the ELF header.
     unsigned short EMachine;
+    TargetMachine &TM;
+    bool is64Bit, isLittleEndian;
   public:
+
+    // Machine architectures
     enum MachineType {
-      NoMachine,
-      EM_386 = 3
+      EM_NONE = 0,     // No machine
+      EM_M32 = 1,      // AT&T WE 32100
+      EM_SPARC = 2,    // SPARC
+      EM_386 = 3,      // Intel 386
+      EM_68K = 4,      // Motorola 68000
+      EM_88K = 5,      // Motorola 88000
+      EM_486 = 6,      // Intel 486 (deprecated)
+      EM_860 = 7,      // Intel 80860
+      EM_MIPS = 8,     // MIPS R3000
+      EM_PPC = 20,     // PowerPC
+      EM_ARM = 40,     // ARM
+      EM_ALPHA = 41,   // DEC Alpha
+      EM_SPARCV9 = 43, // SPARC V9
+      EM_X86_64 = 62   // AMD64
     };
 
-    explicit TargetELFWriterInfo(MachineType machine) : EMachine(machine) {}
-    virtual ~TargetELFWriterInfo() {}
+    // ELF File classes
+    enum {
+      ELFCLASS32 = 1, // 32-bit object file
+      ELFCLASS64 = 2  // 64-bit object file
+    };
+
+    // ELF Endianess
+    enum {
+      ELFDATA2LSB = 1, // Little-endian object file
+      ELFDATA2MSB = 2  // Big-endian object file
+    };
+
+    explicit TargetELFWriterInfo(TargetMachine &tm);
+    virtual ~TargetELFWriterInfo();
 
     unsigned short getEMachine() const { return EMachine; }
+    unsigned getEFlags() const { return 0; }
+    unsigned getEIClass() const { return is64Bit ? ELFCLASS64 : ELFCLASS32; }
+    unsigned getEIData() const {
+      return isLittleEndian ? ELFDATA2LSB : ELFDATA2MSB;
+    }
+
+    /// ELF Header and ELF Section Header Info
+    unsigned getHdrSize() const { return is64Bit ? 64 : 52; }
+    unsigned getSHdrSize() const { return is64Bit ? 64 : 40; }
+
+    /// Symbol Table Info
+    unsigned getSymTabEntrySize() const { return is64Bit ? 24 : 16; }
+
+    /// getPrefELFAlignment - Returns the preferred alignment for ELF. This
+    /// is used to align some sections.
+    unsigned getPrefELFAlignment() const { return is64Bit ? 8 : 4; }
+
+    /// getRelocationEntrySize - Entry size used in the relocation section
+    unsigned getRelocationEntrySize() const {
+      return is64Bit ? (hasRelocationAddend() ? 24 : 16)
+                     : (hasRelocationAddend() ? 12 : 8);
+    }
+
+    /// getRelocationType - Returns the target specific ELF Relocation type.
+    /// 'MachineRelTy' contains the object code independent relocation type
+    virtual unsigned getRelocationType(unsigned MachineRelTy) const = 0;
+
+    /// hasRelocationAddend - True if the target uses an addend in the
+    /// ELF relocation entry.
+    virtual bool hasRelocationAddend() const = 0;
+
+    /// getAddendForRelTy - Gets the addend value for an ELF relocation entry
+    /// based on the target relocation type. If addend is not used returns 0.
+    virtual long int getAddendForRelTy(unsigned RelTy) const = 0;
   };
 
 } // end llvm namespace