riscv/trap.h

   1 // See LICENSE for license details.
   2
   3 #ifndef _RISCV_TRAP_H
   4 #define _RISCV_TRAP_H
   5
   6 #include "decode.h"
   7
   8 struct state_t;
   9
  10 class trap_t
  11 {
  12  public:
  13   trap_t(reg_t which) : which(which) {}
  14   virtual const char* name();
  15   virtual void side_effects(state_t* state) {}
  16   reg_t cause() { return which; }
  17  private:
  18   char _name[16];
  19   reg_t which;
  20 };
  21
  22 class mem_trap_t : public trap_t
  23 {
  24  public:
  25   mem_trap_t(reg_t which, reg_t badvaddr)
  26     : trap_t(which), badvaddr(badvaddr) {}
  27   void side_effects(state_t* state);
  28   reg_t get_badvaddr() { return badvaddr; }
  29  private:
  30   reg_t badvaddr;
  31 };
  32
  33 #define DECLARE_TRAP(n, x) class trap_##x : public trap_t { \
  34  public: \
  35   trap_##x() : trap_t(n) {} \
  36   const char* name() { return "trap_"#x; } \
  37 };
  38
  39 #define DECLARE_MEM_TRAP(n, x) class trap_##x : public mem_trap_t { \
  40  public: \
  41   trap_##x(reg_t badvaddr) : mem_trap_t(n, badvaddr) {} \
  42   const char* name() { return "trap_"#x; } \
  43 };
  44
  45 DECLARE_MEM_TRAP(CAUSE_MISALIGNED_FETCH, instruction_address_misaligned)
  46 DECLARE_MEM_TRAP(CAUSE_FAULT_FETCH, instruction_access_fault)
  47 DECLARE_TRAP(CAUSE_ILLEGAL_INSTRUCTION, illegal_instruction)
  48 DECLARE_TRAP(CAUSE_SCALL, scall)
  49 DECLARE_TRAP(CAUSE_MCALL, mcall)
  50 DECLARE_TRAP(CAUSE_BREAKPOINT, breakpoint)
  51 DECLARE_MEM_TRAP(CAUSE_MISALIGNED_LOAD, load_address_misaligned)
  52 DECLARE_MEM_TRAP(CAUSE_MISALIGNED_STORE, store_address_misaligned)
  53 DECLARE_MEM_TRAP(CAUSE_FAULT_LOAD, load_access_fault)
  54 DECLARE_MEM_TRAP(CAUSE_FAULT_STORE, store_access_fault)
  55
  56 #endif