1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * FP/SIMD state saving and restoring
5 * Copyright (C) 2012 ARM Ltd.
6 * Author: Catalin Marinas <catalin.marinas@arm.com>
9 #include <linux/linkage.h>
11 #include <asm/assembler.h>
12 #include <asm/fpsimdmacros.h>
15 * Save the FP registers.
17 * x0 - pointer to struct fpsimd_state
19 SYM_FUNC_START(fpsimd_save_state)
22 SYM_FUNC_END(fpsimd_save_state)
25 * Load the FP registers.
27 * x0 - pointer to struct fpsimd_state
29 SYM_FUNC_START(fpsimd_load_state)
32 SYM_FUNC_END(fpsimd_load_state)
34 #ifdef CONFIG_ARM64_SVE
36 SYM_FUNC_START(sve_save_state)
39 SYM_FUNC_END(sve_save_state)
41 SYM_FUNC_START(sve_load_state)
42 sve_load 0, x1, x2, 3, x4
44 SYM_FUNC_END(sve_load_state)
46 SYM_FUNC_START(sve_get_vl)
49 SYM_FUNC_END(sve_get_vl)
52 * Load SVE state from FPSIMD state.
54 * x0 = pointer to struct fpsimd_state
57 * Each SVE vector will be loaded with the first 128-bits taken from FPSIMD
58 * and the rest zeroed. All the other SVE registers will be zeroed.
60 SYM_FUNC_START(sve_load_from_fpsimd_state)
61 sve_load_vq x1, x2, x3
63 _for n, 0, 15, _sve_pfalse \n
66 SYM_FUNC_END(sve_load_from_fpsimd_state)
68 /* Zero all SVE registers but the first 128-bits of each vector */
69 SYM_FUNC_START(sve_flush_live)
72 SYM_FUNC_END(sve_flush_live)
74 #endif /* CONFIG_ARM64_SVE */