Check in LLVM r95781.

1 files changed, 78 insertions, 0 deletions

diff --git a/lib/CodeGen/ELFCodeEmitter.h b/lib/CodeGen/ELFCodeEmitter.h
new file mode 100644
index 0000000..b5e9c84
--- /dev/null
+++ b/lib/CodeGen/ELFCodeEmitter.h
@@ -0,0 +1,78 @@
+//===-- lib/CodeGen/ELFCodeEmitter.h ----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ELFCODEEMITTER_H
+#define ELFCODEEMITTER_H
+
+#include "llvm/CodeGen/ObjectCodeEmitter.h"
+#include <vector>
+
+namespace llvm {
+  class ELFWriter;
+  class ELFSection;
+
+  /// ELFCodeEmitter - This class is used by the ELFWriter to 
+  /// emit the code for functions to the ELF file.
+  class ELFCodeEmitter : public ObjectCodeEmitter {
+    ELFWriter &EW;
+
+    /// Target machine description
+    TargetMachine &TM;
+
+    /// Section containing code for functions
+    ELFSection *ES;
+
+    /// Relocations - Record relocations needed by the current function 
+    std::vector<MachineRelocation> Relocations;
+
+    /// JTRelocations - Record relocations needed by the relocation
+    /// section.
+    std::vector<MachineRelocation> JTRelocations;
+
+    /// FnStartPtr - Function offset from the beginning of ELFSection 'ES'
+    uintptr_t FnStartOff;
+  public:
+    explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM) {}
+
+    /// addRelocation - Register new relocations for this function
+    void addRelocation(const MachineRelocation &MR) {
+      Relocations.push_back(MR);
+    }
+
+    /// emitConstantPool - For each constant pool entry, figure out which
+    /// section the constant should live in and emit data to it
+    void emitConstantPool(MachineConstantPool *MCP);
+
+    /// emitJumpTables - Emit all the jump tables for a given jump table
+    /// info and record them to the appropriate section.
+    void emitJumpTables(MachineJumpTableInfo *MJTI);
+
+    void startFunction(MachineFunction &F);
+    bool finishFunction(MachineFunction &F);
+
+    /// emitLabel - Emits a label
+    virtual void emitLabel(uint64_t LabelID) {
+      assert("emitLabel not implemented");
+    }
+
+    /// getLabelAddress - Return the address of the specified LabelID, 
+    /// only usable after the LabelID has been emitted.
+    virtual uintptr_t getLabelAddress(uint64_t Label) const {
+      assert("getLabelAddress not implemented");
+      return 0;
+    }
+
+    virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) {}
+
+};  // end class ELFCodeEmitter
+
+} // end namespace llvm
+
+#endif
+