| Sandrine Bailleux | 3cd87d7 | 2018-10-09 11:12:55 +0200 | [diff] [blame] | 1 | /* |
| Madhukar Pappireddy | c783c0b | 2019-11-14 23:52:37 -0600 | [diff] [blame] | 2 | * Copyright (c) 2016-2019, Arm Limited. All rights reserved. |
| Sandrine Bailleux | 3cd87d7 | 2018-10-09 11:12:55 +0200 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <asm_macros.S> |
| 8 | |
| 9 | .globl asm_tftf_smc32 |
| 10 | |
| 11 | /* --------------------------------------------------------------------------- |
| 12 | * void asm_tftf_smc32(const smc_args *args, |
| 13 | * smc_ret_values *smc_ret); |
| 14 | * --------------------------------------------------------------------------- |
| 15 | */ |
| 16 | func asm_tftf_smc32 |
| 17 | /* Push r9 to keep the stack pointer aligned to 64 bit. */ |
| 18 | push {r4 - r9} |
| 19 | |
| 20 | /* Store the `smc_ret` pointer in a callee saved register */ |
| 21 | mov r8, r1 |
| 22 | |
| 23 | /* Load values used as arguments for the SMC. */ |
| 24 | ldm r0, {r0 - r7} |
| 25 | |
| 26 | smc #0 |
| 27 | |
| 28 | /* |
| Madhukar Pappireddy | c783c0b | 2019-11-14 23:52:37 -0600 | [diff] [blame] | 29 | * The returned values from the SMC are in r0-r7, put them in the |
| Sandrine Bailleux | 3cd87d7 | 2018-10-09 11:12:55 +0200 | [diff] [blame] | 30 | * 'smc_ret_values' return structure. |
| 31 | */ |
| Madhukar Pappireddy | c783c0b | 2019-11-14 23:52:37 -0600 | [diff] [blame] | 32 | stm r8, {r0 - r7} |
| Sandrine Bailleux | 3cd87d7 | 2018-10-09 11:12:55 +0200 | [diff] [blame] | 33 | |
| 34 | pop {r4 - r9} |
| 35 | bx lr |
| 36 | endfunc asm_tftf_smc32 |