Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_FPU_H
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#define __ASM_SH_FPU_H
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#ifndef __ASSEMBLER__
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#include <asm/ptrace.h>
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struct task_struct;
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#ifdef CONFIG_SH_FPU
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static inline void release_fpu(struct pt_regs *regs)
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{
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regs->sr |= SR_FD;
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}
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static inline void grab_fpu(struct pt_regs *regs)
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{
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regs->sr &= ~SR_FD;
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}
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extern void save_fpu(struct task_struct *__tsk);
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extern void restore_fpu(struct task_struct *__tsk);
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extern void fpu_state_restore(struct pt_regs *regs);
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extern void __fpu_state_restore(void);
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#else
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#define save_fpu(tsk) do { } while (0)
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#define restore_fpu(tsk) do { } while (0)
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#define release_fpu(regs) do { } while (0)
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#define grab_fpu(regs) do { } while (0)
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#define fpu_state_restore(regs) do { } while (0)
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#define __fpu_state_restore(regs) do { } while (0)
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#endif
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struct user_regset;
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extern int do_fpu_inst(unsigned short, struct pt_regs *);
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extern int init_fpu(struct task_struct *);
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static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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if (task_thread_info(tsk)->status & TS_USEDFPU) {
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task_thread_info(tsk)->status &= ~TS_USEDFPU;
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save_fpu(tsk);
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release_fpu(regs);
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} else
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tsk->thread.fpu_counter = 0;
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}
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static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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preempt_disable();
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__unlazy_fpu(tsk, regs);
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preempt_enable();
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}
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static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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preempt_disable();
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if (task_thread_info(tsk)->status & TS_USEDFPU) {
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task_thread_info(tsk)->status &= ~TS_USEDFPU;
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release_fpu(regs);
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}
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preempt_enable();
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}
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void float_raise(unsigned int flags);
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int float_rounding_mode(void);
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#endif /* __ASSEMBLER__ */
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#endif /* __ASM_SH_FPU_H */
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