hwacha/hwacha.h

   1 #ifndef _HWACHA_H
   2 #define _HWACHA_H
   3
   4 #include "extension.h"
   5
   6 struct ct_state_t
   7 {
   8   void reset();
   9
  10   uint32_t nxpr;
  11   uint32_t nfpr;
  12   uint32_t maxvl;
  13   uint32_t vl;
  14
  15   reg_t vf_pc;
  16
  17   reg_t cause;
  18   reg_t aux;
  19 };
  20
  21 struct ut_state_t
  22 {
  23   void reset();
  24
  25   bool run;
  26   regfile_t<reg_t, 32, true> XPR;
  27   regfile_t<reg_t, 32, false> FPR;
  28 };
  29
  30 class hwacha_t : public extension_t
  31 {
  32 public:
  33   std::vector<insn_desc_t> get_instructions();
  34   const char* name() { return "hwacha"; }
  35   void reset();
  36
  37   ct_state_t* get_ct_state() { return &ct_state; }
  38   ut_state_t* get_ut_state(int idx) { return &ut_state[idx]; }
  39   bool vf_active();
  40   void take_exception(reg_t, reg_t);
  41   void clear_exception() { clear_interrupt(); }
  42
  43 private:
  44   static const int max_uts = 2048;
  45   ct_state_t ct_state;
  46   ut_state_t ut_state[max_uts];
  47 };
  48
  49 REGISTER_EXTENSION(hwacha, []() { return new hwacha_t; })
  50
  51 #endif