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630 jermar 1
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1703 jermar 29
/** @addtogroup sparc64interrupt
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 * @{
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 */
630 jermar 32
/**
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 * @file
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 * @brief This file contains register window trap handlers.
630 jermar 35
 */
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#ifndef __sparc64_REGWIN_H__
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#define __sparc64_REGWIN_H__
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#include <arch/stack.h>
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#include <arch/arch.h>
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#define TT_CLEAN_WINDOW         0x24
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#define TT_SPILL_0_NORMAL       0x80    /* kernel spills */
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#define TT_SPILL_1_NORMAL       0x84    /* userspace spills */
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#define TT_SPILL_2_NORMAL       0x88    /* spills to userspace window buffer */
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#define TT_SPILL_0_OTHER        0xa0    /* spills to userspace window buffer */
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#define TT_FILL_0_NORMAL        0xc0    /* kernel fills */
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#define TT_FILL_1_NORMAL        0xc4    /* userspace fills */
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#define REGWIN_HANDLER_SIZE     128
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#define CLEAN_WINDOW_HANDLER_SIZE   REGWIN_HANDLER_SIZE
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#define SPILL_HANDLER_SIZE      REGWIN_HANDLER_SIZE
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#define FILL_HANDLER_SIZE       REGWIN_HANDLER_SIZE
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1852 jermar 57
/* Window Save Area offsets. */
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#define L0_OFFSET   0
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#define L1_OFFSET   8
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#define L2_OFFSET   16
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#define L3_OFFSET   24
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#define L4_OFFSET   32
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#define L5_OFFSET   40
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#define L6_OFFSET   48
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#define L7_OFFSET   56
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#define I0_OFFSET   64
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#define I1_OFFSET   72
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#define I2_OFFSET   80
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#define I3_OFFSET   88
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#define I4_OFFSET   96
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#define I5_OFFSET   104
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#define I6_OFFSET   112
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#define I7_OFFSET   120
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632 jermar 75
#ifdef __ASM__
1852 jermar 76
 
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/*
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 * Macro used by the nucleus and the primary context 0 during normal and other spills.
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 */
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.macro SPILL_NORMAL_HANDLER_KERNEL
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    stx %l0, [%sp + STACK_BIAS + L0_OFFSET]
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    stx %l1, [%sp + STACK_BIAS + L1_OFFSET]
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    stx %l2, [%sp + STACK_BIAS + L2_OFFSET]
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    stx %l3, [%sp + STACK_BIAS + L3_OFFSET]
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    stx %l4, [%sp + STACK_BIAS + L4_OFFSET]
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    stx %l5, [%sp + STACK_BIAS + L5_OFFSET]
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    stx %l6, [%sp + STACK_BIAS + L6_OFFSET]
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    stx %l7, [%sp + STACK_BIAS + L7_OFFSET]
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    stx %i0, [%sp + STACK_BIAS + I0_OFFSET]
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    stx %i1, [%sp + STACK_BIAS + I1_OFFSET]
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    stx %i2, [%sp + STACK_BIAS + I2_OFFSET]
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    stx %i3, [%sp + STACK_BIAS + I3_OFFSET]
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    stx %i4, [%sp + STACK_BIAS + I4_OFFSET]
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    stx %i5, [%sp + STACK_BIAS + I5_OFFSET]
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    stx %i6, [%sp + STACK_BIAS + I6_OFFSET]
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    stx %i7, [%sp + STACK_BIAS + I7_OFFSET]
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    saved
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    retry
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.endm
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1852 jermar 101
/*
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 * Macro used by the userspace during normal spills.
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 */
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.macro SPILL_NORMAL_HANDLER_USERSPACE
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    wr %g0, ASI_AIUP, %asi
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    stxa %l0, [%sp + STACK_BIAS + L0_OFFSET] %asi
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    stxa %l1, [%sp + STACK_BIAS + L1_OFFSET] %asi
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    stxa %l2, [%sp + STACK_BIAS + L2_OFFSET] %asi
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    stxa %l3, [%sp + STACK_BIAS + L3_OFFSET] %asi
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    stxa %l4, [%sp + STACK_BIAS + L4_OFFSET] %asi
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    stxa %l5, [%sp + STACK_BIAS + L5_OFFSET] %asi
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    stxa %l6, [%sp + STACK_BIAS + L6_OFFSET] %asi
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    stxa %l7, [%sp + STACK_BIAS + L7_OFFSET] %asi
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    stxa %i0, [%sp + STACK_BIAS + I0_OFFSET] %asi
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    stxa %i1, [%sp + STACK_BIAS + I1_OFFSET] %asi
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    stxa %i2, [%sp + STACK_BIAS + I2_OFFSET] %asi
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    stxa %i3, [%sp + STACK_BIAS + I3_OFFSET] %asi
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    stxa %i4, [%sp + STACK_BIAS + I4_OFFSET] %asi
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    stxa %i5, [%sp + STACK_BIAS + I5_OFFSET] %asi
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    stxa %i6, [%sp + STACK_BIAS + I6_OFFSET] %asi
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    stxa %i7, [%sp + STACK_BIAS + I7_OFFSET] %asi
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    saved
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    retry
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.endm
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/*
1856 jermar 127
 * Macro used to spill userspace window to userspace window buffer.
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 * It can be either triggered from preemptible_handler doing SAVE
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 * at (TL=1) or from normal kernel code doing SAVE when OTHERWIN>0
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 * at (TL=0).
1852 jermar 131
 */
1856 jermar 132
.macro SPILL_TO_USPACE_WINDOW_BUFFER
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    stx %l0, [%g7 + L0_OFFSET] 
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    stx %l1, [%g7 + L1_OFFSET]
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    stx %l2, [%g7 + L2_OFFSET]
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    stx %l3, [%g7 + L3_OFFSET]
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    stx %l4, [%g7 + L4_OFFSET]
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    stx %l5, [%g7 + L5_OFFSET]
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    stx %l6, [%g7 + L6_OFFSET]
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    stx %l7, [%g7 + L7_OFFSET]
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    stx %i0, [%g7 + I0_OFFSET]
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    stx %i1, [%g7 + I1_OFFSET]
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    stx %i2, [%g7 + I2_OFFSET]
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    stx %i3, [%g7 + I3_OFFSET]
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    stx %i4, [%g7 + I4_OFFSET]
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    stx %i5, [%g7 + I5_OFFSET]
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    stx %i6, [%g7 + I6_OFFSET]
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    stx %i7, [%g7 + I7_OFFSET]
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    add %g7, STACK_WINDOW_SAVE_AREA_SIZE, %g7
1852 jermar 150
    saved
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    retry
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.endm
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/*
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 * Macro used by the nucleus and the primary context 0 during normal fills.
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 */
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.macro FILL_NORMAL_HANDLER_KERNEL
630 jermar 159
    ldx [%sp + STACK_BIAS + L0_OFFSET], %l0
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    ldx [%sp + STACK_BIAS + L1_OFFSET], %l1
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    ldx [%sp + STACK_BIAS + L2_OFFSET], %l2
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    ldx [%sp + STACK_BIAS + L3_OFFSET], %l3
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    ldx [%sp + STACK_BIAS + L4_OFFSET], %l4
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    ldx [%sp + STACK_BIAS + L5_OFFSET], %l5
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    ldx [%sp + STACK_BIAS + L6_OFFSET], %l6
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    ldx [%sp + STACK_BIAS + L7_OFFSET], %l7
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    ldx [%sp + STACK_BIAS + I0_OFFSET], %i0
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    ldx [%sp + STACK_BIAS + I1_OFFSET], %i1
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    ldx [%sp + STACK_BIAS + I2_OFFSET], %i2
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    ldx [%sp + STACK_BIAS + I3_OFFSET], %i3
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    ldx [%sp + STACK_BIAS + I4_OFFSET], %i4
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    ldx [%sp + STACK_BIAS + I5_OFFSET], %i5
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    ldx [%sp + STACK_BIAS + I6_OFFSET], %i6
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    ldx [%sp + STACK_BIAS + I7_OFFSET], %i7
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    restored
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    retry
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.endm
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1852 jermar 179
/*
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 * Macro used by the userspace during normal fills.
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 */
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.macro FILL_NORMAL_HANDLER_USERSPACE
1856 jermar 183
    wr %g0, ASI_AIUP, %asi
1852 jermar 184
    ldxa [%sp + STACK_BIAS + L0_OFFSET] %asi, %l0
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    ldxa [%sp + STACK_BIAS + L1_OFFSET] %asi, %l1
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    ldxa [%sp + STACK_BIAS + L2_OFFSET] %asi, %l2
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    ldxa [%sp + STACK_BIAS + L3_OFFSET] %asi, %l3
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    ldxa [%sp + STACK_BIAS + L4_OFFSET] %asi, %l4
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    ldxa [%sp + STACK_BIAS + L5_OFFSET] %asi, %l5
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    ldxa [%sp + STACK_BIAS + L6_OFFSET] %asi, %l6
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    ldxa [%sp + STACK_BIAS + L7_OFFSET] %asi, %l7
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    ldxa [%sp + STACK_BIAS + I0_OFFSET] %asi, %i0
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    ldxa [%sp + STACK_BIAS + I1_OFFSET] %asi, %i1
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    ldxa [%sp + STACK_BIAS + I2_OFFSET] %asi, %i2
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    ldxa [%sp + STACK_BIAS + I3_OFFSET] %asi, %i3
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    ldxa [%sp + STACK_BIAS + I4_OFFSET] %asi, %i4
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    ldxa [%sp + STACK_BIAS + I5_OFFSET] %asi, %i5
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    ldxa [%sp + STACK_BIAS + I6_OFFSET] %asi, %i6
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    ldxa [%sp + STACK_BIAS + I7_OFFSET] %asi, %i7
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    restored
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    retry
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.endm
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630 jermar 204
.macro CLEAN_WINDOW_HANDLER
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    rdpr %cleanwin, %l0
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    add %l0, 1, %l0
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    wrpr %l0, 0, %cleanwin
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    mov %r0, %l0
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    mov %r0, %l1
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    mov %r0, %l2
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    mov %r0, %l3
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    mov %r0, %l4
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    mov %r0, %l5
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    mov %r0, %l6
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    mov %r0, %l7
666 jermar 216
    mov %r0, %o0
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    mov %r0, %o1
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    mov %r0, %o2
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    mov %r0, %o3
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    mov %r0, %o4
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    mov %r0, %o5
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    mov %r0, %o6
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    mov %r0, %o7
630 jermar 224
    retry
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.endm
632 jermar 226
#endif /* __ASM__ */
630 jermar 227
 
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#endif
1702 cejka 229
 
1703 jermar 230
/** @}
1702 cejka 231
 */