diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/sh/include/asm/fpu.h | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sh/include/asm/fpu.h')
| -rw-r--r-- | arch/sh/include/asm/fpu.h | 69 |
1 files changed, 69 insertions, 0 deletions
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 <asm/ptrace.h> + +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 */ |