source: mainline/arch/sparc64/include/trap/regwin.h@ feb5915

/*
 * Copyright (C) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * This file contains register window trap handlers.
 */

#ifndef __sparc64_REGWIN_H__
#define __sparc64_REGWIN_H__

#include <arch/stack.h>

#define TT_CLEAN_WINDOW                 0x24
#define TT_SPILL_0_NORMAL               0x80
#define TT_FILL_0_NORMAL                0xc0

#define REGWIN_HANDLER_SIZE             128

#define CLEAN_WINDOW_HANDLER_SIZE       REGWIN_HANDLER_SIZE
#define SPILL_HANDLER_SIZE              REGWIN_HANDLER_SIZE
#define FILL_HANDLER_SIZE               REGWIN_HANDLER_SIZE

/** Window Save Area offsets. */
#define L0_OFFSET       0
#define L1_OFFSET       8
#define L2_OFFSET       16
#define L3_OFFSET       24
#define L4_OFFSET       32
#define L5_OFFSET       40
#define L6_OFFSET       48
#define L7_OFFSET       56
#define I0_OFFSET       64
#define I1_OFFSET       72
#define I2_OFFSET       80
#define I3_OFFSET       88
#define I4_OFFSET       96
#define I5_OFFSET       104
#define I6_OFFSET       112
#define I7_OFFSET       120

#ifdef __ASM__
.macro SPILL_NORMAL_HANDLER
        stx %l0, [%sp + STACK_BIAS + L0_OFFSET] 
        stx %l1, [%sp + STACK_BIAS + L1_OFFSET]
        stx %l2, [%sp + STACK_BIAS + L2_OFFSET]
        stx %l3, [%sp + STACK_BIAS + L3_OFFSET]
        stx %l4, [%sp + STACK_BIAS + L4_OFFSET]
        stx %l5, [%sp + STACK_BIAS + L5_OFFSET]
        stx %l6, [%sp + STACK_BIAS + L6_OFFSET]
        stx %l7, [%sp + STACK_BIAS + L7_OFFSET]
        stx %i0, [%sp + STACK_BIAS + I0_OFFSET]
        stx %i1, [%sp + STACK_BIAS + I1_OFFSET]
        stx %i2, [%sp + STACK_BIAS + I2_OFFSET]
        stx %i3, [%sp + STACK_BIAS + I3_OFFSET]
        stx %i4, [%sp + STACK_BIAS + I4_OFFSET]
        stx %i5, [%sp + STACK_BIAS + I5_OFFSET]
        stx %i6, [%sp + STACK_BIAS + I6_OFFSET]
        stx %i7, [%sp + STACK_BIAS + I7_OFFSET]
        saved
        retry
.endm

.macro FILL_NORMAL_HANDLER
        ldx [%sp + STACK_BIAS + L0_OFFSET], %l0
        ldx [%sp + STACK_BIAS + L1_OFFSET], %l1
        ldx [%sp + STACK_BIAS + L2_OFFSET], %l2
        ldx [%sp + STACK_BIAS + L3_OFFSET], %l3
        ldx [%sp + STACK_BIAS + L4_OFFSET], %l4
        ldx [%sp + STACK_BIAS + L5_OFFSET], %l5
        ldx [%sp + STACK_BIAS + L6_OFFSET], %l6
        ldx [%sp + STACK_BIAS + L7_OFFSET], %l7
        ldx [%sp + STACK_BIAS + I0_OFFSET], %i0
        ldx [%sp + STACK_BIAS + I1_OFFSET], %i1
        ldx [%sp + STACK_BIAS + I2_OFFSET], %i2
        ldx [%sp + STACK_BIAS + I3_OFFSET], %i3
        ldx [%sp + STACK_BIAS + I4_OFFSET], %i4
        ldx [%sp + STACK_BIAS + I5_OFFSET], %i5
        ldx [%sp + STACK_BIAS + I6_OFFSET], %i6
        ldx [%sp + STACK_BIAS + I7_OFFSET], %i7
        restored
        retry
.endm

.macro CLEAN_WINDOW_HANDLER
        rdpr %cleanwin, %l0
        add %l0, 1, %l0
        wrpr %l0, 0, %cleanwin
        mov %r0, %l0
        mov %r0, %l1
        mov %r0, %l2
        mov %r0, %l3
        mov %r0, %l4
        mov %r0, %l5
        mov %r0, %l6
        mov %r0, %l7
        mov %r0, %o0
        mov %r0, %o1
        mov %r0, %o2
        mov %r0, %o3
        mov %r0, %o4
        mov %r0, %o5
        mov %r0, %o6
        mov %r0, %o7
        retry
.endm
#endif /* __ASM__ */

#endif