From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/arm64/kernel/entry-fpsimd.S | 67 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 arch/arm64/kernel/entry-fpsimd.S (limited to 'arch/arm64/kernel/entry-fpsimd.S') diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S new file mode 100644 index 000000000..c44a82f14 --- /dev/null +++ b/arch/arm64/kernel/entry-fpsimd.S @@ -0,0 +1,67 @@ +/* + * FP/SIMD state saving and restoring + * + * Copyright (C) 2012 ARM Ltd. + * Author: Catalin Marinas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include + +#include +#include + +/* + * Save the FP registers. + * + * x0 - pointer to struct fpsimd_state + */ +ENTRY(fpsimd_save_state) + fpsimd_save x0, 8 + ret +ENDPROC(fpsimd_save_state) + +/* + * Load the FP registers. + * + * x0 - pointer to struct fpsimd_state + */ +ENTRY(fpsimd_load_state) + fpsimd_restore x0, 8 + ret +ENDPROC(fpsimd_load_state) + +#ifdef CONFIG_KERNEL_MODE_NEON + +/* + * Save the bottom n FP registers. + * + * x0 - pointer to struct fpsimd_partial_state + */ +ENTRY(fpsimd_save_partial_state) + fpsimd_save_partial x0, 1, 8, 9 + ret +ENDPROC(fpsimd_save_partial_state) + +/* + * Load the bottom n FP registers. + * + * x0 - pointer to struct fpsimd_partial_state + */ +ENTRY(fpsimd_load_partial_state) + fpsimd_restore_partial x0, 8, 9 + ret +ENDPROC(fpsimd_load_partial_state) + +#endif -- cgit v1.2.3-54-g00ecf