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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2020 Synopsys, Inc. (www.synopsys.com)
- *
- */
- #ifndef _ASM_ARC_FPU_H
- #define _ASM_ARC_FPU_H
- #ifdef CONFIG_ARC_FPU_SAVE_RESTORE
- #include <asm/ptrace.h>
- #ifdef CONFIG_ISA_ARCOMPACT
- /* These DPFP regs need to be saved/restored across ctx-sw */
- struct arc_fpu {
- struct {
- unsigned int l, h;
- } aux_dpfp[2];
- };
- #define fpu_init_task(regs)
- #else
- /*
- * ARCv2 FPU Control aux register
- * - bits to enable Traps on Exceptions
- * - Rounding mode
- *
- * ARCv2 FPU Status aux register
- * - FPU exceptions flags (Inv, Div-by-Zero, overflow, underflow, inexact)
- * - Flag Write Enable to clear flags explicitly (vs. by fpu instructions
- * only
- */
- struct arc_fpu {
- unsigned int ctrl, status;
- };
- extern void fpu_init_task(struct pt_regs *regs);
- #endif /* !CONFIG_ISA_ARCOMPACT */
- struct task_struct;
- extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);
- #else /* !CONFIG_ARC_FPU_SAVE_RESTORE */
- #define fpu_save_restore(p, n)
- #define fpu_init_task(regs)
- #endif /* CONFIG_ARC_FPU_SAVE_RESTORE */
- #endif /* _ASM_ARC_FPU_H */
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