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 #include <stdlib.h>
   8
   9 struct state_t;
  10
  11 class trap_t
  12 {
  13  public:
  14   trap_t(reg_t which) : which(which) {}
  15   virtual const char* name();
  16   virtual bool has_badaddr() { return false; }
  17   virtual reg_t get_badaddr() { return 0; }
  18   reg_t cause() { return which; }
  19  private:
  20   char _name[16];
  21   reg_t which;
  22 };
  23
  24 class mem_trap_t : public trap_t
  25 {
  26  public:
  27   mem_trap_t(reg_t which, reg_t badaddr)
  28     : trap_t(which), badaddr(badaddr) {}
  29   bool has_badaddr() override { return true; }
  30   reg_t get_badaddr() override { return badaddr; }
  31  private:
  32   reg_t badaddr;
  33 };
  34
  35 #define DECLARE_TRAP(n, x) class trap_##x : public trap_t { \
  36  public: \
  37   trap_##x() : trap_t(n) {} \
  38   const char* name() { return "trap_"#x; } \
  39 };
  40
  41 #define DECLARE_MEM_TRAP(n, x) class trap_##x : public mem_trap_t { \
  42  public: \
  43   trap_##x(reg_t badaddr) : mem_trap_t(n, badaddr) {} \
  44   const char* name() { return "trap_"#x; } \
  45 };
  46
  47 DECLARE_MEM_TRAP(CAUSE_MISALIGNED_FETCH, instruction_address_misaligned)
  48 DECLARE_MEM_TRAP(CAUSE_FETCH_ACCESS, instruction_access_fault)
  49 DECLARE_MEM_TRAP(CAUSE_ILLEGAL_INSTRUCTION, illegal_instruction)
  50 DECLARE_MEM_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_LOAD_ACCESS, load_access_fault)
  54 DECLARE_MEM_TRAP(CAUSE_STORE_ACCESS, store_access_fault)
  55 DECLARE_TRAP(CAUSE_USER_ECALL, user_ecall)
  56 DECLARE_TRAP(CAUSE_SUPERVISOR_ECALL, supervisor_ecall)
  57 DECLARE_TRAP(CAUSE_HYPERVISOR_ECALL, hypervisor_ecall)
  58 DECLARE_TRAP(CAUSE_MACHINE_ECALL, machine_ecall)
  59 DECLARE_MEM_TRAP(CAUSE_FETCH_PAGE_FAULT, instruction_page_fault)
  60 DECLARE_MEM_TRAP(CAUSE_LOAD_PAGE_FAULT, load_page_fault)
  61 DECLARE_MEM_TRAP(CAUSE_STORE_PAGE_FAULT, store_page_fault)
  62
  63 #endif