mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
34 lines
827 B
ArmAsm
34 lines
827 B
ArmAsm
|
//
|
||
|
// 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
|