| /* |
| * Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* |
| * This file implements the common calling mechanism to be used with the Secure |
| * Monitor Call (SMC) and Hypervisor Call (HVC). |
| * |
| * See https://developer.arm.com/docs/den0028/latest |
| */ |
| |
| #include <zephyr/toolchain.h> |
| #include <zephyr/linker/sections.h> |
| #include <zephyr/arch/cpu.h> |
| #include <offsets_short.h> |
| |
| .macro SMCCC instr |
| \instr #0 |
| ldr x4, [sp] |
| stp x0, x1, [x4, __arm_smccc_res_t_a0_a1_OFFSET] |
| stp x2, x3, [x4, __arm_smccc_res_t_a2_a3_OFFSET] |
| stp x4, x5, [x4, __arm_smccc_res_t_a4_a5_OFFSET] |
| stp x6, x7, [x4, __arm_smccc_res_t_a6_a7_OFFSET] |
| ret |
| .endm |
| |
| /* |
| * The SMC instruction is used to generate a synchronous exception that is |
| * handled by Secure Monitor code running in EL3. |
| */ |
| GTEXT(arm_smccc_smc) |
| SECTION_FUNC(TEXT, arm_smccc_smc) |
| SMCCC smc |
| |
| /* |
| * The HVC instruction is used to generate a synchronous exception that is |
| * handled by a hypervisor running in EL2. |
| */ |
| GTEXT(arm_smccc_hvc) |
| SECTION_FUNC(TEXT, arm_smccc_hvc) |
| SMCCC hvc |
