sys/arch/mips/include/psl.h

   1 /*      $NetBSD: psl.h,v 1.17 2005/12/11 12:18:09 christos Exp $        */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Ralph Campbell.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)psl.h       8.1 (Berkeley) 6/10/93
  35  */
  36
  37 /*
  38  * Define PSL_LOWIPL, PSL_USERSET, USERMODE for MI code, for
  39  * MIPS1, MIPS3+, or both, depending on the configured CPU types.
  40  */
  41
  42 #include <machine/cdefs.h>      /* for API selection */
  43 #include <mips/cpuregs.h>
  44
  45 /*
  46  * mips3 (or greater)-specific  definitions
  47  */
  48 #define MIPS3_PSL_LOWIPL        (MIPS3_INT_MASK | MIPS_SR_INT_IE)
  49
  50 #if !defined(__mips_o32)
  51 # ifdef _LP64
  52 #  define MIPS3_PSL_XFLAGS      (MIPS3_SR_XX | MIPS_SR_KX)
  53 # else
  54 #  define MIPS3_PSL_XFLAGS      (MIPS3_SR_XX)
  55 # endif
  56 #else
  57 # define MIPS3_PSL_XFLAGS       (0)
  58 #endif
  59
  60 #define MIPS3_PSL_USERSET       \
  61         (MIPS3_SR_KSU_USER |    \
  62          MIPS3_PSL_XFLAGS |     \
  63          MIPS_SR_INT_IE |       \
  64          MIPS3_SR_EXL |         \
  65          MIPS3_INT_MASK)
  66
  67 #define MIPS3_USERMODE(ps) \
  68         (((ps) & MIPS3_SR_KSU_MASK) == MIPS3_SR_KSU_USER)
  69
  70 /*
  71  * mips1-specific definitions
  72  */
  73 #define MIPS1_PSL_LOWIPL        (MIPS_INT_MASK | MIPS_SR_INT_IE)
  74
  75 #define MIPS1_PSL_USERSET \
  76         (MIPS1_SR_KU_OLD |      \
  77          MIPS1_SR_INT_ENA_OLD | \
  78          MIPS1_SR_KU_PREV |     \
  79          MIPS1_SR_INT_ENA_PREV |\
  80          MIPS_INT_MASK)
  81
  82 #define MIPS1_USERMODE(ps) \
  83         ((ps) & MIPS1_SR_KU_PREV)
  84
  85 /*
  86  * Choose mips3-only, mips1-only, or runtime-selected values.
  87  */
  88
  89 #if defined(MIPS3_PLUS) && !defined(MIPS1) /* mips3 or greater only */
  90 # define  PSL_LOWIPL    MIPS3_PSL_LOWIPL
  91 # define  PSL_USERSET   MIPS3_PSL_USERSET
  92 # define  USERMODE(ps)  MIPS3_USERMODE(ps)
  93 #endif /* mips3 only */
  94
  95
  96 #if !defined(MIPS3_PLUS) && defined(MIPS1) /* mips1 only */
  97 # define  PSL_LOWIPL    MIPS1_PSL_LOWIPL
  98 # define  PSL_USERSET   MIPS1_PSL_USERSET
  99 # define  USERMODE(ps)  MIPS1_USERMODE(ps)
 100 #endif /* mips1 only */
 101
 102
 103 #if  MIPS3_PLUS +  MIPS1 > 1
 104 # define PSL_LOWIPL     (CPUISMIPS3 ? MIPS3_PSL_LOWIPL : MIPS1_PSL_LOWIPL)
 105 # define PSL_USERSET    (CPUISMIPS3 ? MIPS3_PSL_USERSET : MIPS1_PSL_USERSET)
 106 # define USERMODE(ps)   (CPUISMIPS3 ? MIPS3_USERMODE(ps) : MIPS1_USERMODE(ps))
 107 #endif