Release 4.14 arch/mn10300/include/asm/fpu.h
/* 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");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 73.33% | 1 | 50.00% |
| David Howells | 4 | 26.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
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");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 73.33% | 1 | 50.00% |
| David Howells | 4 | 26.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
#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();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 83 | 100.00% | 1 | 100.00% |
| Total | 83 | 100.00% | 1 | 100.00% |
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
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 29 | 87.88% | 1 | 50.00% |
| Jiri Slaby | 4 | 12.12% | 1 | 50.00% |
| Total | 33 | 100.00% | 2 | 100.00% |
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);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 89 | 100.00% | 1 | 100.00% |
| Total | 89 | 100.00% | 1 | 100.00% |
#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; }
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 13 | 86.67% | 1 | 50.00% |
| David Howells | 2 | 13.33% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static inline void set_using_fpu(struct task_struct *tsk) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void clear_using_fpu(struct task_struct *tsk) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void fpu_init_state(void) {}
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| Akira Takeuchi | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
static inline void fpu_save(struct fpu_state_struct *s) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void fpu_kill_state(struct task_struct *tsk) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void unlazy_fpu(struct task_struct *tsk) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void exit_fpu(struct task_struct *tsk) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 7 | 63.64% | 1 | 50.00% |
| Jiri Slaby | 4 | 36.36% | 1 | 50.00% |
| Total | 11 | 100.00% | 2 | 100.00% |
static inline void flush_fpu(void) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
static inline int fpu_setup_sigcontext(struct fpucontext *buf) { return 0; }
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| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 8 | 53.33% | 1 | 50.00% |
| Akira Takeuchi | 7 | 46.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static inline int fpu_restore_sigcontext(struct fpucontext *buf) { return 0; }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 8 | 53.33% | 1 | 50.00% |
| Akira Takeuchi | 7 | 46.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
#endif /* CONFIG_FPU */
#endif /* __KERNEL__ */
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_FPU_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akira Takeuchi | 412 | 78.33% | 1 | 33.33% |
| David Howells | 106 | 20.15% | 1 | 33.33% |
| Jiri Slaby | 8 | 1.52% | 1 | 33.33% |
| Total | 526 | 100.00% | 3 | 100.00% |
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