riscv/rocc.cc

   1 #include "rocc.h"
   2 #include "trap.h"
   3 #include <cstdlib>
   4
   5 #define customX(n) \
   6   static reg_t c##n(processor_t* p, insn_t insn, reg_t pc) \
   7   { \
   8     rocc_t* rocc = static_cast<rocc_t*>(p->get_extension()); \
   9     rocc_insn_union_t u; \
  10     u.i = insn; \
  11     reg_t xs1 = u.r.xs1 ? RS1 : -1; \
  12     reg_t xs2 = u.r.xs2 ? RS2 : -1; \
  13     reg_t xd = rocc->custom##n(u.r, xs1, xs2); \
  14     if (u.r.xd) \
  15       WRITE_RD(xd); \
  16     return pc+4; \
  17   } \
  18   \
  19   reg_t rocc_t::custom##n(rocc_insn_t insn, reg_t xs1, reg_t xs2) \
  20   { \
  21     illegal_instruction(); \
  22     return 0; \
  23   }
  24
  25 customX(0)
  26 customX(1)
  27 customX(2)
  28 customX(3)
  29
  30 std::vector<insn_desc_t> rocc_t::get_instructions()
  31 {
  32   std::vector<insn_desc_t> insns;
  33   insns.push_back((insn_desc_t){0x0b, 0x7f, &::illegal_instruction, c0});
  34   insns.push_back((insn_desc_t){0x2b, 0x7f, &::illegal_instruction, c1});
  35   insns.push_back((insn_desc_t){0x5b, 0x7f, &::illegal_instruction, c2});
  36   insns.push_back((insn_desc_t){0x7b, 0x7f, &::illegal_instruction, c3});
  37   return insns;
  38 }
  39
  40 std::vector<disasm_insn_t*> rocc_t::get_disasms()
  41 {
  42   std::vector<disasm_insn_t*> insns;
  43   return insns;
  44 }