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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
|
|
