/*
* Copyright ( c ) 2006 Tensilica , Inc . All Rights Reserved .
*
* This program is free software ; you can redistribute it and / or modify
* it under the terms of version 2 . 1 of the GNU Lesser General Public
* License as published by the Free Software Foundation .
*
* This program is distributed in the hope that it would be useful , but
* WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE .
*
* Further , this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like . Any license provided herein , whether implied or
* otherwise , applies only to this software file . Patent licenses , if
* any , provided herein do not apply to combinations of this program with
* other software , or any other product whatsoever .
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program ; if not , write the Free Software
* Foundation , Inc . , 59 Temple Place - Suite 330 , Boston MA 02111 - 1307 ,
* USA .
*/
#ifndef _XTENSA_REGS_H
#define _XTENSA_REGS_H
/* Special registers. */
#define SREG_MR 32
#define SREG_IBREAKENABLE 96
#define SREG_IBREAKA 128
#define SREG_DBREAKA 144
#define SREG_DBREAKC 160
#define SREG_EPC 176
#define SREG_EPS 192
#define SREG_EXCSAVE 208
#define SREG_CCOMPARE 240
#define SREG_MISC 244
/* EXCCAUSE register fields */
#define EXCCAUSE_EXCCAUSE_SHIFT 0
#define EXCCAUSE_EXCCAUSE_MASK 0 x3F
#define EXCCAUSE_ILLEGAL_INSTRUCTION 0
#define EXCCAUSE_SYSTEM_CALL 1
#define EXCCAUSE_INSTRUCTION_FETCH_ERROR 2
#define EXCCAUSE_LOAD_STORE_ERROR 3
#define EXCCAUSE_LEVEL1_INTERRUPT 4
#define EXCCAUSE_ALLOCA 5
#define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO 6
#define EXCCAUSE_SPECULATION 7
#define EXCCAUSE_PRIVILEGED 8
#define EXCCAUSE_UNALIGNED 9
#define EXCCAUSE_INSTR_DATA_ERROR 12
#define EXCCAUSE_LOAD_STORE_DATA_ERROR 13
#define EXCCAUSE_INSTR_ADDR_ERROR 14
#define EXCCAUSE_LOAD_STORE_ADDR_ERROR 15
#define EXCCAUSE_ITLB_MISS 16
#define EXCCAUSE_ITLB_MULTIHIT 17
#define EXCCAUSE_ITLB_PRIVILEGE 18
#define EXCCAUSE_ITLB_SIZE_RESTRICTION 19
#define EXCCAUSE_FETCH_CACHE_ATTRIBUTE 20
#define EXCCAUSE_DTLB_MISS 24
#define EXCCAUSE_DTLB_MULTIHIT 25
#define EXCCAUSE_DTLB_PRIVILEGE 26
#define EXCCAUSE_DTLB_SIZE_RESTRICTION 27
#define EXCCAUSE_LOAD_CACHE_ATTRIBUTE 28
#define EXCCAUSE_STORE_CACHE_ATTRIBUTE 29
#define EXCCAUSE_COPROCESSOR0_DISABLED 32
#define EXCCAUSE_COPROCESSOR1_DISABLED 33
#define EXCCAUSE_COPROCESSOR2_DISABLED 34
#define EXCCAUSE_COPROCESSOR3_DISABLED 35
#define EXCCAUSE_COPROCESSOR4_DISABLED 36
#define EXCCAUSE_COPROCESSOR5_DISABLED 37
#define EXCCAUSE_COPROCESSOR6_DISABLED 38
#define EXCCAUSE_COPROCESSOR7_DISABLED 39
#define EXCCAUSE_N 64
/* PS register fields. */
#define PS_WOE_BIT 18
#define PS_WOE_MASK 0 x00040000
#define PS_CALLINC_SHIFT 16
#define PS_CALLINC_MASK 0 x00030000
#define PS_OWB_SHIFT 8
#define PS_OWB_WIDTH 4
#define PS_OWB_MASK 0 x00000F00
#define PS_RING_SHIFT 6
#define PS_RING_MASK 0 x000000C0
#define PS_UM_BIT 5
#define PS_EXCM_BIT 4
#define PS_INTLEVEL_SHIFT 0
#define PS_INTLEVEL_WIDTH 4
#define PS_INTLEVEL_MASK 0 x0000000F
/* DBREAKCn register fields. */
#define DBREAKC_MASK_BIT 0
#define DBREAKC_MASK_MASK 0 x0000003F
#define DBREAKC_LOAD_BIT 30
#define DBREAKC_LOAD_MASK 0 x40000000
#define DBREAKC_STOR_BIT 31
#define DBREAKC_STOR_MASK 0 x80000000
/* DEBUGCAUSE register fields. */
#define DEBUGCAUSE_DBNUM_MASK 0 xf00
#define DEBUGCAUSE_DBNUM_SHIFT 8 /* First bit of DBNUM field */
#define DEBUGCAUSE_DEBUGINT_BIT 5 /* External debug interrupt */
#define DEBUGCAUSE_BREAKN_BIT 4 /* BREAK.N instruction */
#define DEBUGCAUSE_BREAK_BIT 3 /* BREAK instruction */
#define DEBUGCAUSE_DBREAK_BIT 2 /* DBREAK match */
#define DEBUGCAUSE_IBREAK_BIT 1 /* IBREAK match */
#define DEBUGCAUSE_ICOUNT_BIT 0 /* ICOUNT would incr. to zero */
#endif /* _XTENSA_SPECREG_H */
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