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/*
* Copyright (c) 2016, ARM Limited and Contributors. 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.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#include <asm_macros.S>
.macro push ra, rb, sp=sp
stp \ra, \rb, [\sp,#-16]!
.endm
.macro pop ra, rb, sp=sp
ldp \ra, \rb, [\sp], #16
.endm
.global trusty_context_switch_helper
func trusty_context_switch_helper
push x8, xzr
push x19, x20
push x21, x22
push x23, x24
push x25, x26
push x27, x28
push x29, x30
mov x9, sp
ldr x10, [x0]
mov sp, x10
str x9, [x0]
pop x29, x30
pop x27, x28
pop x25, x26
pop x23, x24
pop x21, x22
pop x19, x20
pop x8, xzr
ldr x2, [x1]
ldr x3, [x1, #0x08]
ldr x4, [x1, #0x10]
ldr x5, [x1, #0x18]
ldr x6, [x1, #0x20]
ldr x7, [x1, #0x28]
ldr x10, [x1, #0x30]
ldr x11, [x1, #0x38]
stp x2, x3, [x8]
stp x4, x5, [x8, #16]
stp x6, x7, [x8, #32]
stp x10, x11, [x8, #48]
ret
endfunc trusty_context_switch_helper
.global trusty_init_context_stack
func trusty_init_context_stack
push x8, xzr, x1
push xzr, xzr, x1
push xzr, xzr, x1
push xzr, xzr, x1
push xzr, xzr, x1
push xzr, xzr, x1
adr x9, el3_exit
push xzr, x9, x1
str x1, [x0]
ret
endfunc trusty_init_context_stack
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