/*
* Copyright (c) 2005 Jakub Jermar
* Copyright (c) 2009 Pavel Rimsky
* 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.
*/
/** @addtogroup kernel_sparc64_interrupt
* @{
*/
/*
* Saves the contents of the current window to the userspace window buffer.
* Does not modify any register window registers, but updates pointer to the
* top of the userspace window buffer.
*
* Parameters:
* \tmpreg1 global register to be used for scratching purposes
* \tmpreg2 global register to be used for scratching purposes
*/
.macro SAVE_TO_USPACE_WBUF tmpreg1, tmpreg2
set SCRATCHPAD_WBUF, \tmpreg2
ldxa [\tmpreg2] ASI_SCRATCHPAD, \tmpreg1
stx %l0, [\tmpreg1 + L0_OFFSET]
stx %l1, [\tmpreg1 + L1_OFFSET]
stx %l2, [\tmpreg1 + L2_OFFSET]
stx %l3, [\tmpreg1 + L3_OFFSET]
stx %l4, [\tmpreg1 + L4_OFFSET]
stx %l5, [\tmpreg1 + L5_OFFSET]
stx %l6, [\tmpreg1 + L6_OFFSET]
stx %l7, [\tmpreg1 + L7_OFFSET]
stx %i0, [\tmpreg1 + I0_OFFSET]
stx %i1, [\tmpreg1 + I1_OFFSET]
stx %i2, [\tmpreg1 + I2_OFFSET]
stx %i3, [\tmpreg1 + I3_OFFSET]
stx %i4, [\tmpreg1 + I4_OFFSET]
stx %i5, [\tmpreg1 + I5_OFFSET]
stx %i6, [\tmpreg1 + I6_OFFSET]
stx %i7, [\tmpreg1 + I7_OFFSET]
add \tmpreg1, STACK_WINDOW_SAVE_AREA_SIZE, \tmpreg1
stxa \tmpreg1, [\tmpreg2] ASI_SCRATCHPAD
.endm
/*
* Macro used to spill userspace window to userspace window buffer.
* It is triggered from normal kernel code doing SAVE when
* OTHERWIN>0 at (TL=0).
*/
.macro SPILL_TO_USPACE_WINDOW_BUFFER
SAVE_TO_USPACE_WBUF %g7, %g4
saved
retry
.endm
/** @}
*/