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//
// Copyright (c) 2012-2014, ARM Limited. All rights reserved.
// Copyright (c) 2014-2016, Linaro Limited. All rights reserved.
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
//
#include <AsmMacroIoLibV8.h>
ASM_FUNC(ArmCallHvc)
// Push x0 on the stack - The stack must always be quad-word aligned
str x0, [sp, #-16]!
// Load the HVC arguments values into the appropriate registers
ldp x6, x7, [x0, #48]
ldp x4, x5, [x0, #32]
ldp x2, x3, [x0, #16]
ldp x0, x1, [x0, #0]
hvc #0
// Pop the ARM_HVC_ARGS structure address from the stack into x9
ldr x9, [sp], #16
// Store the HVC returned values into the ARM_HVC_ARGS structure.
// A HVC call can return up to 4 values
stp x2, x3, [x9, #16]
stp x0, x1, [x9, #0]
mov x0, x9
ret
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