/**@file

  RISC-V Exception Handler library definition file.

  Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef RISCV_CPU_EXECPTION_HANDLER_LIB_H_
#define RISCV_CPU_EXECPTION_HANDLER_LIB_H_

extern void SupervisorModeTrap(void);

//
// Index of SMode trap register
//
#define SMODE_TRAP_REGS_zero          0
#define SMODE_TRAP_REGS_ra            1
#define SMODE_TRAP_REGS_sp            2
#define SMODE_TRAP_REGS_gp            3
#define SMODE_TRAP_REGS_tp            4
#define SMODE_TRAP_REGS_t0            5
#define SMODE_TRAP_REGS_t1            6
#define SMODE_TRAP_REGS_t2            7
#define SMODE_TRAP_REGS_s0            8
#define SMODE_TRAP_REGS_s1            9
#define SMODE_TRAP_REGS_a0            10
#define SMODE_TRAP_REGS_a1            11
#define SMODE_TRAP_REGS_a2            12
#define SMODE_TRAP_REGS_a3            13
#define SMODE_TRAP_REGS_a4            14
#define SMODE_TRAP_REGS_a5            15
#define SMODE_TRAP_REGS_a6            16
#define SMODE_TRAP_REGS_a7            17
#define SMODE_TRAP_REGS_s2            18
#define SMODE_TRAP_REGS_s3            19
#define SMODE_TRAP_REGS_s4            20
#define SMODE_TRAP_REGS_s5            21
#define SMODE_TRAP_REGS_s6            22
#define SMODE_TRAP_REGS_s7            23
#define SMODE_TRAP_REGS_s8            24
#define SMODE_TRAP_REGS_s9            25
#define SMODE_TRAP_REGS_s10           26
#define SMODE_TRAP_REGS_s11           27
#define SMODE_TRAP_REGS_t3            28
#define SMODE_TRAP_REGS_t4            29
#define SMODE_TRAP_REGS_t5            30
#define SMODE_TRAP_REGS_t6            31
#define SMODE_TRAP_REGS_sepc          32
#define SMODE_TRAP_REGS_sstatus       33
#define SMODE_TRAP_REGS_sie           34
#define SMODE_TRAP_REGS_last          35

#define SMODE_TRAP_REGS_OFFSET(x) ((SMODE_TRAP_REGS_##x) * __SIZEOF_POINTER__)
#define SMODE_TRAP_REGS_SIZE SMODE_TRAP_REGS_OFFSET(last)

#pragma pack(1)
typedef struct {
//
// Below are follow the format of EFI_SYSTEM_CONTEXT
//
    RISC_V_REGS_PROTOTYPE zero;
    RISC_V_REGS_PROTOTYPE ra;
    RISC_V_REGS_PROTOTYPE sp;
    RISC_V_REGS_PROTOTYPE gp;
    RISC_V_REGS_PROTOTYPE tp;
    RISC_V_REGS_PROTOTYPE t0;
    RISC_V_REGS_PROTOTYPE t1;
    RISC_V_REGS_PROTOTYPE t2;
    RISC_V_REGS_PROTOTYPE s0;
    RISC_V_REGS_PROTOTYPE s1;
    RISC_V_REGS_PROTOTYPE a0;
    RISC_V_REGS_PROTOTYPE a1;
    RISC_V_REGS_PROTOTYPE a2;
    RISC_V_REGS_PROTOTYPE a3;
    RISC_V_REGS_PROTOTYPE a4;
    RISC_V_REGS_PROTOTYPE a5;
    RISC_V_REGS_PROTOTYPE a6;
    RISC_V_REGS_PROTOTYPE a7;
    RISC_V_REGS_PROTOTYPE s2;
    RISC_V_REGS_PROTOTYPE s3;
    RISC_V_REGS_PROTOTYPE s4;
    RISC_V_REGS_PROTOTYPE s5;
    RISC_V_REGS_PROTOTYPE s6;
    RISC_V_REGS_PROTOTYPE s7;
    RISC_V_REGS_PROTOTYPE s8;
    RISC_V_REGS_PROTOTYPE s9;
    RISC_V_REGS_PROTOTYPE s10;
    RISC_V_REGS_PROTOTYPE s11;
    RISC_V_REGS_PROTOTYPE t3;
    RISC_V_REGS_PROTOTYPE t4;
    RISC_V_REGS_PROTOTYPE t5;
    RISC_V_REGS_PROTOTYPE t6;
//
// Below are the additional information to
// EFI_SYSTEM_CONTEXT, private to supervisor mode trap
// and not public to EFI environment.
//
    RISC_V_REGS_PROTOTYPE sepc;
    RISC_V_REGS_PROTOTYPE sstatus;
    RISC_V_REGS_PROTOTYPE sie;
} SMODE_TRAP_REGISTERS;
#pragma pack()

#endif