riscv/sv_decode.h

   1 // See LICENSE for license details.
   2
   3 #ifndef _RISCV_SV_DECODE_H
   4 #define _RISCV_SV_DECODE_H
   5
   6 #include "sv.h"
   7 #include "decode.h"
   8
   9 #define REG_RD 0x1
  10 #define REG_RS1 0x2
  11 #define REG_RS2 0x4
  12 #define REG_RS3 0x8
  13
  14 class sv_insn_t: public insn_t
  15 {
  16 public:
  17   sv_insn_t(insn_bits_t bits, int& v, unsigned int f) :
  18             insn_t(bits), voffs(v), fimap(f) {}
  19   uint64_t rd () { return remap(insn_t::rd (), fimap & REG_RD); }
  20   uint64_t rs1() { return remap(insn_t::rs1(), fimap & REG_RS1); }
  21   uint64_t rs2() { return remap(insn_t::rs2(), fimap & REG_RS2); }
  22   uint64_t rs3() { return remap(insn_t::rs3(), fimap & REG_RS3); }
  23 private:
  24   int &voffs;
  25   unsigned int fimap;
  26   // remaps the register through the lookup table.
  27   // will need to take the current loop index/offset somehow
  28   uint64_t remap(uint64_t reg, bool isint);
  29 };
  30
  31 #endif