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// See LICENSE for license details.
#ifndef _RISCV_TRAP_H
#define _RISCV_TRAP_H
#include "decode.h"
class state_t;
class trap_t
{
public:
trap_t(reg_t which) : which(which) {}
virtual const char* name();
virtual void side_effects(state_t* state) {}
reg_t cause() { return which; }
private:
char _name[16];
reg_t which;
};
class mem_trap_t : public trap_t
{
public:
mem_trap_t(reg_t which, reg_t badvaddr)
: trap_t(which), badvaddr(badvaddr) {}
void side_effects(state_t* state);
reg_t get_badvaddr() { return badvaddr; }
private:
reg_t badvaddr;
};
#define DECLARE_TRAP(n, x) class trap_##x : public trap_t { \
public: \
trap_##x() : trap_t(n) {} \
const char* name() { return "trap_"#x; } \
};
#define DECLARE_MEM_TRAP(n, x) class trap_##x : public mem_trap_t { \
public: \
trap_##x(reg_t badvaddr) : mem_trap_t(n, badvaddr) {} \
const char* name() { return "trap_"#x; } \
};
DECLARE_TRAP(CAUSE_MISALIGNED_FETCH, instruction_address_misaligned)
DECLARE_TRAP(CAUSE_FAULT_FETCH, instruction_access_fault)
DECLARE_TRAP(CAUSE_ILLEGAL_INSTRUCTION, illegal_instruction)
DECLARE_TRAP(CAUSE_PRIVILEGED_INSTRUCTION, privileged_instruction)
DECLARE_TRAP(CAUSE_FP_DISABLED, fp_disabled)
DECLARE_TRAP(CAUSE_SYSCALL, syscall)
DECLARE_TRAP(CAUSE_BREAKPOINT, breakpoint)
DECLARE_MEM_TRAP(CAUSE_MISALIGNED_LOAD, load_address_misaligned)
DECLARE_MEM_TRAP(CAUSE_MISALIGNED_STORE, store_address_misaligned)
DECLARE_MEM_TRAP(CAUSE_FAULT_LOAD, load_access_fault)
DECLARE_MEM_TRAP(CAUSE_FAULT_STORE, store_access_fault)
DECLARE_TRAP(CAUSE_ACCELERATOR_DISABLED, accelerator_disabled)
#endif
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