kernel/arch/sparc64/include/trap/regwin.h

   1 /*
   2  * Copyright (C) 2005 Jakub Jermar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup sparc64interrupt
  30  * @{
  31  */
  32 /**
  33  * @file
  34  * @brief This file contains register window trap handlers.
  35  */
  36
  37 #ifndef __sparc64_REGWIN_H__
  38 #define __sparc64_REGWIN_H__
  39
  40 #include <arch/stack.h>
  41 #include <arch/arch.h>
  42
  43 #define TT_CLEAN_WINDOW                 0x24
  44 #define TT_SPILL_0_NORMAL               0x80
  45 #define TT_FILL_0_NORMAL                0xc0
  46
  47 #define REGWIN_HANDLER_SIZE             128
  48
  49 #define CLEAN_WINDOW_HANDLER_SIZE       REGWIN_HANDLER_SIZE
  50 #define SPILL_HANDLER_SIZE              REGWIN_HANDLER_SIZE
  51 #define FILL_HANDLER_SIZE               REGWIN_HANDLER_SIZE
  52
  53 #define NWINDOW         8
  54
  55 /* Window Save Area offsets. */
  56 #define L0_OFFSET       0
  57 #define L1_OFFSET       8
  58 #define L2_OFFSET       16
  59 #define L3_OFFSET       24
  60 #define L4_OFFSET       32
  61 #define L5_OFFSET       40
  62 #define L6_OFFSET       48
  63 #define L7_OFFSET       56
  64 #define I0_OFFSET       64
  65 #define I1_OFFSET       72
  66 #define I2_OFFSET       80
  67 #define I3_OFFSET       88
  68 #define I4_OFFSET       96
  69 #define I5_OFFSET       104
  70 #define I6_OFFSET       112
  71 #define I7_OFFSET       120
  72
  73 #ifdef __ASM__
  74
  75 /*
  76  * Macro used by the nucleus and the primary context 0 during normal and other spills.
  77  */
  78 .macro SPILL_NORMAL_HANDLER_KERNEL
  79         stx %l0, [%sp + STACK_BIAS + L0_OFFSET]
  80         stx %l1, [%sp + STACK_BIAS + L1_OFFSET]
  81         stx %l2, [%sp + STACK_BIAS + L2_OFFSET]
  82         stx %l3, [%sp + STACK_BIAS + L3_OFFSET]
  83         stx %l4, [%sp + STACK_BIAS + L4_OFFSET]
  84         stx %l5, [%sp + STACK_BIAS + L5_OFFSET]
  85         stx %l6, [%sp + STACK_BIAS + L6_OFFSET]
  86         stx %l7, [%sp + STACK_BIAS + L7_OFFSET]
  87         stx %i0, [%sp + STACK_BIAS + I0_OFFSET]
  88         stx %i1, [%sp + STACK_BIAS + I1_OFFSET]
  89         stx %i2, [%sp + STACK_BIAS + I2_OFFSET]
  90         stx %i3, [%sp + STACK_BIAS + I3_OFFSET]
  91         stx %i4, [%sp + STACK_BIAS + I4_OFFSET]
  92         stx %i5, [%sp + STACK_BIAS + I5_OFFSET]
  93         stx %i6, [%sp + STACK_BIAS + I6_OFFSET]
  94         stx %i7, [%sp + STACK_BIAS + I7_OFFSET]
  95         saved
  96         retry
  97 .endm
  98
  99 /*
 100  * Macro used by the userspace during normal spills.
 101  */
 102 .macro SPILL_NORMAL_HANDLER_USERSPACE
 103         wr ASI_AIUP, %asi
 104         stxa %l0, [%sp + STACK_BIAS + L0_OFFSET] %asi
 105         stxa %l1, [%sp + STACK_BIAS + L1_OFFSET] %asi
 106         stxa %l2, [%sp + STACK_BIAS + L2_OFFSET] %asi
 107         stxa %l3, [%sp + STACK_BIAS + L3_OFFSET] %asi
 108         stxa %l4, [%sp + STACK_BIAS + L4_OFFSET] %asi
 109         stxa %l5, [%sp + STACK_BIAS + L5_OFFSET] %asi
 110         stxa %l6, [%sp + STACK_BIAS + L6_OFFSET] %asi
 111         stxa %l7, [%sp + STACK_BIAS + L7_OFFSET] %asi
 112         stxa %i0, [%sp + STACK_BIAS + I0_OFFSET] %asi
 113         stxa %i1, [%sp + STACK_BIAS + I1_OFFSET] %asi
 114         stxa %i2, [%sp + STACK_BIAS + I2_OFFSET] %asi
 115         stxa %i3, [%sp + STACK_BIAS + I3_OFFSET] %asi
 116         stxa %i4, [%sp + STACK_BIAS + I4_OFFSET] %asi
 117         stxa %i5, [%sp + STACK_BIAS + I5_OFFSET] %asi
 118         stxa %i6, [%sp + STACK_BIAS + I6_OFFSET] %asi
 119         stxa %i7, [%sp + STACK_BIAS + I7_OFFSET] %asi
 120         saved
 121         retry
 122 .endm
 123
 124 /*
 125  * Macro used by the userspace during other spills.
 126  */
 127 .macro SPILL_OTHER_HANDLER_USERSPACE
 128         wr ASI_AIUS, %asi
 129         stxa %l0, [%sp + STACK_BIAS + L0_OFFSET] %asi
 130         stxa %l1, [%sp + STACK_BIAS + L1_OFFSET] %asi
 131         stxa %l2, [%sp + STACK_BIAS + L2_OFFSET] %asi
 132         stxa %l3, [%sp + STACK_BIAS + L3_OFFSET] %asi
 133         stxa %l4, [%sp + STACK_BIAS + L4_OFFSET] %asi
 134         stxa %l5, [%sp + STACK_BIAS + L5_OFFSET] %asi
 135         stxa %l6, [%sp + STACK_BIAS + L6_OFFSET] %asi
 136         stxa %l7, [%sp + STACK_BIAS + L7_OFFSET] %asi
 137         stxa %i0, [%sp + STACK_BIAS + I0_OFFSET] %asi
 138         stxa %i1, [%sp + STACK_BIAS + I1_OFFSET] %asi
 139         stxa %i2, [%sp + STACK_BIAS + I2_OFFSET] %asi
 140         stxa %i3, [%sp + STACK_BIAS + I3_OFFSET] %asi
 141         stxa %i4, [%sp + STACK_BIAS + I4_OFFSET] %asi
 142         stxa %i5, [%sp + STACK_BIAS + I5_OFFSET] %asi
 143         stxa %i6, [%sp + STACK_BIAS + I6_OFFSET] %asi
 144         stxa %i7, [%sp + STACK_BIAS + I7_OFFSET] %asi
 145         saved
 146         retry
 147 .endm
 148
 149
 150 /*
 151  * Macro used by the nucleus and the primary context 0 during normal fills.
 152  */
 153 .macro FILL_NORMAL_HANDLER_KERNEL
 154         ldx [%sp + STACK_BIAS + L0_OFFSET], %l0
 155         ldx [%sp + STACK_BIAS + L1_OFFSET], %l1
 156         ldx [%sp + STACK_BIAS + L2_OFFSET], %l2
 157         ldx [%sp + STACK_BIAS + L3_OFFSET], %l3
 158         ldx [%sp + STACK_BIAS + L4_OFFSET], %l4
 159         ldx [%sp + STACK_BIAS + L5_OFFSET], %l5
 160         ldx [%sp + STACK_BIAS + L6_OFFSET], %l6
 161         ldx [%sp + STACK_BIAS + L7_OFFSET], %l7
 162         ldx [%sp + STACK_BIAS + I0_OFFSET], %i0
 163         ldx [%sp + STACK_BIAS + I1_OFFSET], %i1
 164         ldx [%sp + STACK_BIAS + I2_OFFSET], %i2
 165         ldx [%sp + STACK_BIAS + I3_OFFSET], %i3
 166         ldx [%sp + STACK_BIAS + I4_OFFSET], %i4
 167         ldx [%sp + STACK_BIAS + I5_OFFSET], %i5
 168         ldx [%sp + STACK_BIAS + I6_OFFSET], %i6
 169         ldx [%sp + STACK_BIAS + I7_OFFSET], %i7
 170         restored
 171         retry
 172 .endm
 173
 174 /*
 175  * Macro used by the userspace during normal fills.
 176  */
 177 .macro FILL_NORMAL_HANDLER_USERSPACE
 178         wr ASI_AIUP, %asi
 179         ldxa [%sp + STACK_BIAS + L0_OFFSET] %asi, %l0
 180         ldxa [%sp + STACK_BIAS + L1_OFFSET] %asi, %l1
 181         ldxa [%sp + STACK_BIAS + L2_OFFSET] %asi, %l2
 182         ldxa [%sp + STACK_BIAS + L3_OFFSET] %asi, %l3
 183         ldxa [%sp + STACK_BIAS + L4_OFFSET] %asi, %l4
 184         ldxa [%sp + STACK_BIAS + L5_OFFSET] %asi, %l5
 185         ldxa [%sp + STACK_BIAS + L6_OFFSET] %asi, %l6
 186         ldxa [%sp + STACK_BIAS + L7_OFFSET] %asi, %l7
 187         ldxa [%sp + STACK_BIAS + I0_OFFSET] %asi, %i0
 188         ldxa [%sp + STACK_BIAS + I1_OFFSET] %asi, %i1
 189         ldxa [%sp + STACK_BIAS + I2_OFFSET] %asi, %i2
 190         ldxa [%sp + STACK_BIAS + I3_OFFSET] %asi, %i3
 191         ldxa [%sp + STACK_BIAS + I4_OFFSET] %asi, %i4
 192         ldxa [%sp + STACK_BIAS + I5_OFFSET] %asi, %i5
 193         ldxa [%sp + STACK_BIAS + I6_OFFSET] %asi, %i6
 194         ldxa [%sp + STACK_BIAS + I7_OFFSET] %asi, %i7
 195         restored
 196         retry
 197 .endm
 198
 199 /*
 200  * Macro used by the userspace during other fills.
 201  */
 202 .macro FILL_OTHER_HANDLER_USERSPACE
 203         wr ASI_AIUS, %asi
 204         ldxa [%sp + STACK_BIAS + L0_OFFSET] %asi, %l0
 205         ldxa [%sp + STACK_BIAS + L1_OFFSET] %asi, %l1
 206         ldxa [%sp + STACK_BIAS + L2_OFFSET] %asi, %l2
 207         ldxa [%sp + STACK_BIAS + L3_OFFSET] %asi, %l3
 208         ldxa [%sp + STACK_BIAS + L4_OFFSET] %asi, %l4
 209         ldxa [%sp + STACK_BIAS + L5_OFFSET] %asi, %l5
 210         ldxa [%sp + STACK_BIAS + L6_OFFSET] %asi, %l6
 211         ldxa [%sp + STACK_BIAS + L7_OFFSET] %asi, %l7
 212         ldxa [%sp + STACK_BIAS + I0_OFFSET] %asi, %i0
 213         ldxa [%sp + STACK_BIAS + I1_OFFSET] %asi, %i1
 214         ldxa [%sp + STACK_BIAS + I2_OFFSET] %asi, %i2
 215         ldxa [%sp + STACK_BIAS + I3_OFFSET] %asi, %i3
 216         ldxa [%sp + STACK_BIAS + I4_OFFSET] %asi, %i4
 217         ldxa [%sp + STACK_BIAS + I5_OFFSET] %asi, %i5
 218         ldxa [%sp + STACK_BIAS + I6_OFFSET] %asi, %i6
 219         ldxa [%sp + STACK_BIAS + I7_OFFSET] %asi, %i7
 220         restored
 221         retry
 222 .endm
 223
 224 .macro CLEAN_WINDOW_HANDLER
 225         rdpr %cleanwin, %l0
 226         add %l0, 1, %l0
 227         wrpr %l0, 0, %cleanwin
 228         mov %r0, %l0
 229         mov %r0, %l1
 230         mov %r0, %l2
 231         mov %r0, %l3
 232         mov %r0, %l4
 233         mov %r0, %l5
 234         mov %r0, %l6
 235         mov %r0, %l7
 236         mov %r0, %o0
 237         mov %r0, %o1
 238         mov %r0, %o2
 239         mov %r0, %o3
 240         mov %r0, %o4
 241         mov %r0, %o5
 242         mov %r0, %o6
 243         mov %r0, %o7
 244         retry
 245 .endm
 246 #endif /* __ASM__ */
 247
 248 #endif
 249
 250 /** @}
 251  */
 252