From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/sh/include/asm/fpu.h | 69 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 arch/sh/include/asm/fpu.h (limited to 'arch/sh/include/asm/fpu.h') diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h new file mode 100644 index 000000000..04584be89 --- /dev/null +++ b/arch/sh/include/asm/fpu.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SH_FPU_H +#define __ASM_SH_FPU_H + +#ifndef __ASSEMBLY__ + +#include + +struct task_struct; + +#ifdef CONFIG_SH_FPU +static inline void release_fpu(struct pt_regs *regs) +{ + regs->sr |= SR_FD; +} + +static inline void grab_fpu(struct pt_regs *regs) +{ + regs->sr &= ~SR_FD; +} + +extern void save_fpu(struct task_struct *__tsk); +extern void restore_fpu(struct task_struct *__tsk); +extern void fpu_state_restore(struct pt_regs *regs); +extern void __fpu_state_restore(void); +#else +#define save_fpu(tsk) do { } while (0) +#define restore_fpu(tsk) do { } while (0) +#define release_fpu(regs) do { } while (0) +#define grab_fpu(regs) do { } while (0) +#define fpu_state_restore(regs) do { } while (0) +#define __fpu_state_restore(regs) do { } while (0) +#endif + +struct user_regset; + +extern int do_fpu_inst(unsigned short, struct pt_regs *); +extern int init_fpu(struct task_struct *); + +static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) +{ + if (task_thread_info(tsk)->status & TS_USEDFPU) { + task_thread_info(tsk)->status &= ~TS_USEDFPU; + save_fpu(tsk); + release_fpu(regs); + } else + tsk->thread.fpu_counter = 0; +} + +static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) +{ + preempt_disable(); + __unlazy_fpu(tsk, regs); + preempt_enable(); +} + +static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs) +{ + preempt_disable(); + if (task_thread_info(tsk)->status & TS_USEDFPU) { + task_thread_info(tsk)->status &= ~TS_USEDFPU; + release_fpu(regs); + } + preempt_enable(); +} + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_SH_FPU_H */ -- cgit v1.2.3