Started simX

simX/include/enc.h

@@ -0,0 +1,73 @@
+/*******************************************************************************
+ HARPtools by Chad D. Kersey, Summer 2011
+*******************************************************************************/
+#ifndef __ENC_H
+#define __ENC_H
+
+#include <map>
+
+#include "types.h"
+#include "instruction.h"
+#include "obj.h"
+#include "trace.h"
+  // } trace_inst_t;
+
+namespace Harp {
+  class DataChunk;
+  class TextChunk;
+  class Ref;
+
+  class Encoder {
+  public:
+    Encoder() {}
+    virtual ~Encoder() {}
+
+    virtual Size encode(Ref *&ref, std::vector<Byte> &v, Size n, 
+                        Instruction &i) = 0;
+    void encodeChunk(DataChunk &dest, const TextChunk &src);
+  };
+
+  class Decoder {
+  public:
+    Decoder() : haveRefs(false) {}
+    Decoder(const std::vector<Ref*> &refVec) : haveRefs(true) {
+      setRefs(refVec);
+    }
+
+    virtual ~Decoder() {}
+
+    void setRefs(const std::vector<Ref*> &);
+    void clearRefs() { refMap.clear(); }
+    virtual Instruction *decode(const std::vector<Byte> &v, Size &n, trace_inst_t * trace_inst) = 0;
+    virtual Instruction *decode(const std::vector<Byte> &v, Size &n) = 0;
+    void decodeChunk(TextChunk &dest, const DataChunk &src);
+  protected:
+    bool haveRefs;
+    std::map <Size, Ref*> refMap;
+  };
+
+  class WordDecoder : public Decoder {
+  public:
+    WordDecoder(const ArchDef &);    
+    virtual Instruction *decode(const std::vector<Byte> &v, Size &n, trace_inst_t * trace_inst);
+    virtual Instruction *decode(const std::vector<Byte> &v, Size &n) {printf("Not implemented\n");}
+
+  private:
+    Size n, o, r, p, i1, i2, i3;
+    Word oMask, rMask, pMask, i1Mask, i2Mask, i3Mask;
+
+    // FARES
+    Size inst_s, opcode_s, reg_s, func3_s;
+    Size shift_opcode, shift_rd, shift_rs1, shift_rs2, shift_func3, shift_func7;
+    Size shift_j_u_immed, shift_s_b_immed, shift_i_immed;
+
+
+
+    Word reg_mask, func3_mask, func7_mask, opcode_mask, i_immed_mask, 
+          s_immed_mask, b_immed_mask, u_immed_mask, j_immed_mask;
+
+  };
+
+};
+
+#endif