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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * FP/SIMD state saving and restoring
- *
- * Copyright (C) 2012 ARM Ltd.
- * Author: Catalin Marinas <catalin.marinas@arm.com>
- */
- #include <linux/linkage.h>
- #include <asm/assembler.h>
- #include <asm/fpsimdmacros.h>
- /*
- * Save the FP registers.
- *
- * x0 - pointer to struct fpsimd_state
- */
- SYM_FUNC_START(fpsimd_save_state)
- fpsimd_save x0, 8
- ret
- SYM_FUNC_END(fpsimd_save_state)
- /*
- * Load the FP registers.
- *
- * x0 - pointer to struct fpsimd_state
- */
- SYM_FUNC_START(fpsimd_load_state)
- fpsimd_restore x0, 8
- ret
- SYM_FUNC_END(fpsimd_load_state)
- #ifdef CONFIG_ARM64_SVE
- SYM_FUNC_START(sve_save_state)
- sve_save 0, x1, 2
- ret
- SYM_FUNC_END(sve_save_state)
- SYM_FUNC_START(sve_load_state)
- sve_load 0, x1, x2, 3, x4
- ret
- SYM_FUNC_END(sve_load_state)
- SYM_FUNC_START(sve_get_vl)
- _sve_rdvl 0, 1
- ret
- SYM_FUNC_END(sve_get_vl)
- /*
- * Load SVE state from FPSIMD state.
- *
- * x0 = pointer to struct fpsimd_state
- * x1 = VQ - 1
- *
- * Each SVE vector will be loaded with the first 128-bits taken from FPSIMD
- * and the rest zeroed. All the other SVE registers will be zeroed.
- */
- SYM_FUNC_START(sve_load_from_fpsimd_state)
- sve_load_vq x1, x2, x3
- fpsimd_restore x0, 8
- _for n, 0, 15, _sve_pfalse \n
- _sve_wrffr 0
- ret
- SYM_FUNC_END(sve_load_from_fpsimd_state)
- /* Zero all SVE registers but the first 128-bits of each vector */
- SYM_FUNC_START(sve_flush_live)
- sve_flush
- ret
- SYM_FUNC_END(sve_flush_live)
- #endif /* CONFIG_ARM64_SVE */
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