#ifndef ARCH_H__
#define ARCH_H__

#include <stdint.h>
#ifdef __riscv_e
#define NR_REGS 16
#else
#define NR_REGS 32
#endif

struct Context {
//The order of these members should match trap.S, pay attention to pdir.
 uintptr_t  gpr[NR_REGS];
 uintptr_t mcause;
 uintptr_t mstatus;
 uintptr_t mepc;
    void *pdir;
};

#ifdef __riscv_e
#define GPR1 gpr[15] // a5
#else
#define GPR1 gpr[17] // a7
#endif

#define GPR2 gpr[10] //a0
#define GPR3 gpr[11] //a1
#define GPR4 gpr[12] //a2
#define GPRx gpr[10] //a0, return value

#endif