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// See LICENSE for license details.
#ifndef _RISCV_TRAP_H
#define _RISCV_TRAP_H
#include "decode.h"
#include <stdlib.h>
struct state_t;
class trap_t
{
public:
trap_t(reg_t which) : which(which) {}
virtual const char* name();
virtual bool has_tval() { return false; }
virtual reg_t get_tval() { return 0; }
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 tval)
: trap_t(which), tval(tval) {}
bool has_tval() override { return true; }
reg_t get_tval() override { return tval; }
private:
reg_t tval;
};
#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 tval) : mem_trap_t(n, tval) {} \
const char* name() { return "trap_"#x; } \
};
DECLARE_MEM_TRAP(CAUSE_MISALIGNED_FETCH, instruction_address_misaligned)
DECLARE_MEM_TRAP(CAUSE_FETCH_ACCESS, instruction_access_fault)
DECLARE_MEM_TRAP(CAUSE_ILLEGAL_INSTRUCTION, illegal_instruction)
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_LOAD_ACCESS, load_access_fault)
DECLARE_MEM_TRAP(CAUSE_STORE_ACCESS, store_access_fault)
DECLARE_TRAP(CAUSE_USER_ECALL, user_ecall)
DECLARE_TRAP(CAUSE_SUPERVISOR_ECALL, supervisor_ecall)
DECLARE_TRAP(CAUSE_HYPERVISOR_ECALL, hypervisor_ecall)
DECLARE_TRAP(CAUSE_MACHINE_ECALL, machine_ecall)
DECLARE_MEM_TRAP(CAUSE_FETCH_PAGE_FAULT, instruction_page_fault)
DECLARE_MEM_TRAP(CAUSE_LOAD_PAGE_FAULT, load_page_fault)
DECLARE_MEM_TRAP(CAUSE_STORE_PAGE_FAULT, store_page_fault)
#endif
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