arch/xtensa/include/asm/regs.h

   1 /*
   2  * Copyright (c) 2006 Tensilica, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of version 2.1 of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this program; if not, write the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
  22  * USA.
  23  */
  24
  25 #ifndef _XTENSA_REGS_H
  26 #define _XTENSA_REGS_H
  27
  28 /*  Special registers.  */
  29
  30 #define SREG_MR                 32
  31 #define SREG_IBREAKA            128
  32 #define SREG_DBREAKA            144
  33 #define SREG_DBREAKC            160
  34 #define SREG_EPC                176
  35 #define SREG_EPS                192
  36 #define SREG_EXCSAVE            208
  37 #define SREG_CCOMPARE           240
  38 #define SREG_MISC               244
  39
  40 /*  EXCCAUSE register fields  */
  41
  42 #define EXCCAUSE_EXCCAUSE_SHIFT 0
  43 #define EXCCAUSE_EXCCAUSE_MASK  0x3F
  44
  45 #define EXCCAUSE_ILLEGAL_INSTRUCTION            0
  46 #define EXCCAUSE_SYSTEM_CALL                    1
  47 #define EXCCAUSE_INSTRUCTION_FETCH_ERROR        2
  48 #define EXCCAUSE_LOAD_STORE_ERROR               3
  49 #define EXCCAUSE_LEVEL1_INTERRUPT               4
  50 #define EXCCAUSE_ALLOCA                         5
  51 #define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO         6
  52 #define EXCCAUSE_SPECULATION                    7
  53 #define EXCCAUSE_PRIVILEGED                     8
  54 #define EXCCAUSE_UNALIGNED                      9
  55 #define EXCCAUSE_INSTR_DATA_ERROR               12
  56 #define EXCCAUSE_LOAD_STORE_DATA_ERROR          13
  57 #define EXCCAUSE_INSTR_ADDR_ERROR               14
  58 #define EXCCAUSE_LOAD_STORE_ADDR_ERROR          15
  59 #define EXCCAUSE_ITLB_MISS                      16
  60 #define EXCCAUSE_ITLB_MULTIHIT                  17
  61 #define EXCCAUSE_ITLB_PRIVILEGE                 18
  62 #define EXCCAUSE_ITLB_SIZE_RESTRICTION          19
  63 #define EXCCAUSE_FETCH_CACHE_ATTRIBUTE          20
  64 #define EXCCAUSE_DTLB_MISS                      24
  65 #define EXCCAUSE_DTLB_MULTIHIT                  25
  66 #define EXCCAUSE_DTLB_PRIVILEGE                 26
  67 #define EXCCAUSE_DTLB_SIZE_RESTRICTION          27
  68 #define EXCCAUSE_LOAD_CACHE_ATTRIBUTE           28
  69 #define EXCCAUSE_STORE_CACHE_ATTRIBUTE          29
  70 #define EXCCAUSE_COPROCESSOR0_DISABLED          32
  71 #define EXCCAUSE_COPROCESSOR1_DISABLED          33
  72 #define EXCCAUSE_COPROCESSOR2_DISABLED          34
  73 #define EXCCAUSE_COPROCESSOR3_DISABLED          35
  74 #define EXCCAUSE_COPROCESSOR4_DISABLED          36
  75 #define EXCCAUSE_COPROCESSOR5_DISABLED          37
  76 #define EXCCAUSE_COPROCESSOR6_DISABLED          38
  77 #define EXCCAUSE_COPROCESSOR7_DISABLED          39
  78
  79 /*  PS register fields.  */
  80
  81 #define PS_WOE_BIT              18
  82 #define PS_CALLINC_SHIFT        16
  83 #define PS_CALLINC_MASK         0x00030000
  84 #define PS_OWB_SHIFT            8
  85 #define PS_OWB_WIDTH            4
  86 #define PS_OWB_MASK             0x00000F00
  87 #define PS_RING_SHIFT           6
  88 #define PS_RING_MASK            0x000000C0
  89 #define PS_UM_BIT               5
  90 #define PS_EXCM_BIT             4
  91 #define PS_INTLEVEL_SHIFT       0
  92 #define PS_INTLEVEL_WIDTH       4
  93 #define PS_INTLEVEL_MASK        0x0000000F
  94
  95 /*  DBREAKCn register fields.  */
  96
  97 #define DBREAKC_MASK_BIT                0
  98 #define DBREAKC_MASK_MASK               0x0000003F
  99 #define DBREAKC_LOAD_BIT                30
 100 #define DBREAKC_LOAD_MASK               0x40000000
 101 #define DBREAKC_STOR_BIT                31
 102 #define DBREAKC_STOR_MASK               0x80000000
 103
 104 /*  DEBUGCAUSE register fields.  */
 105
 106 #define DEBUGCAUSE_DEBUGINT_BIT         5       /* External debug interrupt */
 107 #define DEBUGCAUSE_BREAKN_BIT           4       /* BREAK.N instruction */
 108 #define DEBUGCAUSE_BREAK_BIT            3       /* BREAK instruction */
 109 #define DEBUGCAUSE_DBREAK_BIT           2       /* DBREAK match */
 110 #define DEBUGCAUSE_IBREAK_BIT           1       /* IBREAK match */
 111 #define DEBUGCAUSE_ICOUNT_BIT           0       /* ICOUNT would incr. to zero */
 112
 113 #endif /* _XTENSA_SPECREG_H */