UefiCpuPkg/Library/BaseRiscV64CpuExceptionHandlerLib/CpuExceptionHandlerLib.h

   1 /** @file
   2
   3   RISC-V Exception Handler library definition file.
   4
   5   Copyright (c) 2019-2022, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #ifndef RISCV_CPU_EXECPTION_HANDLER_LIB_H_
  12 #define RISCV_CPU_EXECPTION_HANDLER_LIB_H_
  13
  14 #include <Register/RiscV64/RiscVImpl.h>
  15
  16 /**
  17   Trap Handler for S-mode
  18
  19 **/
  20 VOID
  21 SupervisorModeTrap (
  22   VOID
  23   );
  24
  25 //
  26 // Index of SMode trap register
  27 //
  28 #define SMODE_TRAP_REGS_zero     0
  29 #define SMODE_TRAP_REGS_ra       1
  30 #define SMODE_TRAP_REGS_sp       2
  31 #define SMODE_TRAP_REGS_gp       3
  32 #define SMODE_TRAP_REGS_tp       4
  33 #define SMODE_TRAP_REGS_t0       5
  34 #define SMODE_TRAP_REGS_t1       6
  35 #define SMODE_TRAP_REGS_t2       7
  36 #define SMODE_TRAP_REGS_s0       8
  37 #define SMODE_TRAP_REGS_s1       9
  38 #define SMODE_TRAP_REGS_a0       10
  39 #define SMODE_TRAP_REGS_a1       11
  40 #define SMODE_TRAP_REGS_a2       12
  41 #define SMODE_TRAP_REGS_a3       13
  42 #define SMODE_TRAP_REGS_a4       14
  43 #define SMODE_TRAP_REGS_a5       15
  44 #define SMODE_TRAP_REGS_a6       16
  45 #define SMODE_TRAP_REGS_a7       17
  46 #define SMODE_TRAP_REGS_s2       18
  47 #define SMODE_TRAP_REGS_s3       19
  48 #define SMODE_TRAP_REGS_s4       20
  49 #define SMODE_TRAP_REGS_s5       21
  50 #define SMODE_TRAP_REGS_s6       22
  51 #define SMODE_TRAP_REGS_s7       23
  52 #define SMODE_TRAP_REGS_s8       24
  53 #define SMODE_TRAP_REGS_s9       25
  54 #define SMODE_TRAP_REGS_s10      26
  55 #define SMODE_TRAP_REGS_s11      27
  56 #define SMODE_TRAP_REGS_t3       28
  57 #define SMODE_TRAP_REGS_t4       29
  58 #define SMODE_TRAP_REGS_t5       30
  59 #define SMODE_TRAP_REGS_t6       31
  60 #define SMODE_TRAP_REGS_sepc     32
  61 #define SMODE_TRAP_REGS_sstatus  33
  62 #define SMODE_TRAP_REGS_sie      34
  63 #define SMODE_TRAP_REGS_last     35
  64
  65 #define SMODE_TRAP_REGS_OFFSET(x)  ((SMODE_TRAP_REGS_##x) * __SIZEOF_POINTER__)
  66 #define SMODE_TRAP_REGS_SIZE  SMODE_TRAP_REGS_OFFSET(last)
  67
  68 #pragma pack(1)
  69 typedef struct {
  70   //
  71   // Below are follow the format of EFI_SYSTEM_CONTEXT
  72   //
  73   UINT64    zero;
  74   UINT64    ra;
  75   UINT64    sp;
  76   UINT64    gp;
  77   UINT64    tp;
  78   UINT64    t0;
  79   UINT64    t1;
  80   UINT64    t2;
  81   UINT64    s0;
  82   UINT64    s1;
  83   UINT64    a0;
  84   UINT64    a1;
  85   UINT64    a2;
  86   UINT64    a3;
  87   UINT64    a4;
  88   UINT64    a5;
  89   UINT64    a6;
  90   UINT64    a7;
  91   UINT64    s2;
  92   UINT64    s3;
  93   UINT64    s4;
  94   UINT64    s5;
  95   UINT64    s6;
  96   UINT64    s7;
  97   UINT64    s8;
  98   UINT64    s9;
  99   UINT64    s10;
 100   UINT64    s11;
 101   UINT64    t3;
 102   UINT64    t4;
 103   UINT64    t5;
 104   UINT64    t6;
 105   //
 106   // Below are the additional information to
 107   // EFI_SYSTEM_CONTEXT, private to supervisor mode trap
 108   // and not public to EFI environment.
 109   //
 110   UINT64    sepc;
 111   UINT64    sstatus;
 112   UINT64    sie;
 113 } SMODE_TRAP_REGISTERS;
 114 #pragma pack()
 115
 116 #endif