1/* 2 * FP/SIMD state saving and restoring 3 * 4 * Copyright (C) 2012 ARM Ltd. 5 * Author: Catalin Marinas <catalin.marinas@arm.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20#include <linux/linkage.h> 21 22#include <asm/assembler.h> 23#include <asm/fpsimdmacros.h> 24 25/* 26 * Save the FP registers. 27 * 28 * x0 - pointer to struct fpsimd_state 29 */ 30ENTRY(fpsimd_save_state) 31 fpsimd_save x0, 8 32 ret 33ENDPROC(fpsimd_save_state) 34 35/* 36 * Load the FP registers. 37 * 38 * x0 - pointer to struct fpsimd_state 39 */ 40ENTRY(fpsimd_load_state) 41 fpsimd_restore x0, 8 42 ret 43ENDPROC(fpsimd_load_state) 44 45#ifdef CONFIG_ARM64_SVE 46ENTRY(sve_save_state) 47 sve_save 0, x1, 2 48 ret 49ENDPROC(sve_save_state) 50 51ENTRY(sve_load_state) 52 sve_load 0, x1, x2, 3, x4 53 ret 54ENDPROC(sve_load_state) 55 56ENTRY(sve_get_vl) 57 _sve_rdvl 0, 1 58 ret 59ENDPROC(sve_get_vl) 60#endif /* CONFIG_ARM64_SVE */ 61