| // | |
| // 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 |