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Diffstat (limited to 'include/asm-mips/fpu.h')
-rw-r--r-- | include/asm-mips/fpu.h | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/include/asm-mips/fpu.h b/include/asm-mips/fpu.h deleted file mode 100644 index 8a3ef247659a..000000000000 --- a/include/asm-mips/fpu.h +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (C) 2002 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#ifndef _ASM_FPU_H -#define _ASM_FPU_H - -#include <linux/sched.h> -#include <linux/thread_info.h> -#include <linux/bitops.h> - -#include <asm/mipsregs.h> -#include <asm/cpu.h> -#include <asm/cpu-features.h> -#include <asm/hazards.h> -#include <asm/processor.h> -#include <asm/current.h> - -#ifdef CONFIG_MIPS_MT_FPAFF -#include <asm/mips_mt.h> -#endif - -struct sigcontext; -struct sigcontext32; - -extern asmlinkage int (*save_fp_context)(struct sigcontext __user *sc); -extern asmlinkage int (*restore_fp_context)(struct sigcontext __user *sc); - -extern asmlinkage int (*save_fp_context32)(struct sigcontext32 __user *sc); -extern asmlinkage int (*restore_fp_context32)(struct sigcontext32 __user *sc); - -extern void fpu_emulator_init_fpu(void); -extern int fpu_emulator_save_context(struct sigcontext __user *sc); -extern int fpu_emulator_restore_context(struct sigcontext __user *sc); -extern void _init_fpu(void); -extern void _save_fp(struct task_struct *); -extern void _restore_fp(struct task_struct *); - -#define __enable_fpu() \ -do { \ - set_c0_status(ST0_CU1); \ - enable_fpu_hazard(); \ -} while (0) - -#define __disable_fpu() \ -do { \ - clear_c0_status(ST0_CU1); \ - disable_fpu_hazard(); \ -} while (0) - -#define enable_fpu() \ -do { \ - if (cpu_has_fpu) \ - __enable_fpu(); \ -} while (0) - -#define disable_fpu() \ -do { \ - if (cpu_has_fpu) \ - __disable_fpu(); \ -} while (0) - - -#define clear_fpu_owner() clear_thread_flag(TIF_USEDFPU) - -static inline int __is_fpu_owner(void) -{ - return test_thread_flag(TIF_USEDFPU); -} - -static inline int is_fpu_owner(void) -{ - return cpu_has_fpu && __is_fpu_owner(); -} - -static inline void __own_fpu(void) -{ - __enable_fpu(); - KSTK_STATUS(current) |= ST0_CU1; - set_thread_flag(TIF_USEDFPU); -} - -static inline void own_fpu_inatomic(int restore) -{ - if (cpu_has_fpu && !__is_fpu_owner()) { - __own_fpu(); - if (restore) - _restore_fp(current); - } -} - -static inline void own_fpu(int restore) -{ - preempt_disable(); - own_fpu_inatomic(restore); - preempt_enable(); -} - -static inline void lose_fpu(int save) -{ - preempt_disable(); - if (is_fpu_owner()) { - if (save) - _save_fp(current); - KSTK_STATUS(current) &= ~ST0_CU1; - clear_thread_flag(TIF_USEDFPU); - __disable_fpu(); - } - preempt_enable(); -} - -static inline void init_fpu(void) -{ - preempt_disable(); - if (cpu_has_fpu) { - __own_fpu(); - _init_fpu(); - } else { - fpu_emulator_init_fpu(); - } - preempt_enable(); -} - -static inline void save_fp(struct task_struct *tsk) -{ - if (cpu_has_fpu) - _save_fp(tsk); -} - -static inline void restore_fp(struct task_struct *tsk) -{ - if (cpu_has_fpu) - _restore_fp(tsk); -} - -static inline fpureg_t *get_fpu_regs(struct task_struct *tsk) -{ - if (tsk == current) { - preempt_disable(); - if (is_fpu_owner()) - _save_fp(current); - preempt_enable(); - } - - return tsk->thread.fpu.fpr; -} - -#endif /* _ASM_FPU_H */ |