/* 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 */