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Diffstat (limited to 'arch/mn10300/include/asm/fpu.h')
| -rw-r--r-- | arch/mn10300/include/asm/fpu.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h deleted file mode 100644 index a47e995d45f3..000000000000 --- a/arch/mn10300/include/asm/fpu.h +++ /dev/null @@ -1,132 +0,0 @@ -/* MN10300 FPU definitions - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * Derived from include/asm-i386/i387.h: Copyright (C) 1994 Linus Torvalds - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#ifndef _ASM_FPU_H -#define _ASM_FPU_H - -#ifndef __ASSEMBLY__ - -#include <linux/sched.h> -#include <asm/exceptions.h> -#include <asm/sigcontext.h> - -#ifdef __KERNEL__ - -extern asmlinkage void fpu_disabled(void); - -#ifdef CONFIG_FPU - -#ifdef CONFIG_LAZY_SAVE_FPU -/* the task that currently owns the FPU state */ -extern struct task_struct *fpu_state_owner; -#endif - -#if (THREAD_USING_FPU & ~0xff) -#error THREAD_USING_FPU must be smaller than 0x100. -#endif - -static inline void set_using_fpu(struct task_struct *tsk) -{ - asm volatile( - "bset %0,(0,%1)" - : - : "i"(THREAD_USING_FPU), "a"(&tsk->thread.fpu_flags) - : "memory", "cc"); -} - -static inline void clear_using_fpu(struct task_struct *tsk) -{ - asm volatile( - "bclr %0,(0,%1)" - : - : "i"(THREAD_USING_FPU), "a"(&tsk->thread.fpu_flags) - : "memory", "cc"); -} - -#define is_using_fpu(tsk) ((tsk)->thread.fpu_flags & THREAD_USING_FPU) - -extern asmlinkage void fpu_kill_state(struct task_struct *); -extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code); -extern asmlinkage void fpu_init_state(void); -extern asmlinkage void fpu_save(struct fpu_state_struct *); -extern int fpu_setup_sigcontext(struct fpucontext *buf); -extern int fpu_restore_sigcontext(struct fpucontext *buf); - -static inline void unlazy_fpu(struct task_struct *tsk) -{ - preempt_disable(); -#ifndef CONFIG_LAZY_SAVE_FPU - if (tsk->thread.fpu_flags & THREAD_HAS_FPU) { - fpu_save(&tsk->thread.fpu_state); - tsk->thread.fpu_flags &= ~THREAD_HAS_FPU; - tsk->thread.uregs->epsw &= ~EPSW_FE; - } -#else - if (fpu_state_owner == tsk) - fpu_save(&tsk->thread.fpu_state); -#endif - preempt_enable(); -} - -static inline void exit_fpu(struct task_struct *tsk) -{ -#ifdef CONFIG_LAZY_SAVE_FPU - preempt_disable(); - if (fpu_state_owner == tsk) - fpu_state_owner = NULL; - preempt_enable(); -#endif -} - -static inline void flush_fpu(void) -{ - struct task_struct *tsk = current; - - preempt_disable(); -#ifndef CONFIG_LAZY_SAVE_FPU - if (tsk->thread.fpu_flags & THREAD_HAS_FPU) { - tsk->thread.fpu_flags &= ~THREAD_HAS_FPU; - tsk->thread.uregs->epsw &= ~EPSW_FE; - } -#else - if (fpu_state_owner == tsk) { - fpu_state_owner = NULL; - tsk->thread.uregs->epsw &= ~EPSW_FE; - } -#endif - preempt_enable(); - clear_using_fpu(tsk); -} - -#else /* CONFIG_FPU */ - -extern asmlinkage -void unexpected_fpu_exception(struct pt_regs *, enum exception_code); -#define fpu_exception unexpected_fpu_exception - -struct task_struct; -struct fpu_state_struct; -static inline bool is_using_fpu(struct task_struct *tsk) { return false; } -static inline void set_using_fpu(struct task_struct *tsk) {} -static inline void clear_using_fpu(struct task_struct *tsk) {} -static inline void fpu_init_state(void) {} -static inline void fpu_save(struct fpu_state_struct *s) {} -static inline void fpu_kill_state(struct task_struct *tsk) {} -static inline void unlazy_fpu(struct task_struct *tsk) {} -static inline void exit_fpu(struct task_struct *tsk) {} -static inline void flush_fpu(void) {} -static inline int fpu_setup_sigcontext(struct fpucontext *buf) { return 0; } -static inline int fpu_restore_sigcontext(struct fpucontext *buf) { return 0; } -#endif /* CONFIG_FPU */ - -#endif /* __KERNEL__ */ -#endif /* !__ASSEMBLY__ */ -#endif /* _ASM_FPU_H */ |