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| author | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 18:29:41 +1100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 18:30:32 +1100 |
| commit | c1f3ee120bb61045b1c0a3ead620d1d65af47130 (patch) | |
| tree | 908430bf2b47fe8e96ac623ae7ab6dd5698d0938 /include/asm-sh/fpu.h | |
| parent | e619a75ff6201b567a539e787aa9af9bc63a3187 (diff) | |
| parent | 9135f1901ee6449dfe338adf6e40e9c2025b8150 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'include/asm-sh/fpu.h')
| -rw-r--r-- | include/asm-sh/fpu.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/asm-sh/fpu.h b/include/asm-sh/fpu.h new file mode 100644 index 00000000000..f8429880a27 --- /dev/null +++ b/include/asm-sh/fpu.h @@ -0,0 +1,46 @@ +#ifndef __ASM_SH_FPU_H +#define __ASM_SH_FPU_H + +#define SR_FD 0x00008000 + +#ifndef __ASSEMBLY__ +#include <asm/ptrace.h> + +#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; +} + +struct task_struct; + +extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs); +#else +#define release_fpu(regs) do { } while (0) +#define grab_fpu(regs) do { } while (0) +#define save_fpu(tsk, regs) do { } while (0) +#endif + +extern int do_fpu_inst(unsigned short, struct pt_regs *); + +#define unlazy_fpu(tsk, regs) do { \ + if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ + save_fpu(tsk, regs); \ + } \ +} while (0) + +#define clear_fpu(tsk, regs) do { \ + if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ + clear_tsk_thread_flag(tsk, TIF_USEDFPU); \ + release_fpu(regs); \ + } \ +} while (0) + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_SH_FPU_H */ |