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authorPaul Mundt <lethal@linux-sh.org>2007-11-22 03:30:50 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:55 -0500
commit332fd57b92d26e2ac6112340b98e92bb76117a41 (patch)
treefbbc00a900299ad91f46a74b8f2d42efaf4809af /include/asm-sh/fpu.h
parentb6d7b666097e79a8908e3c43fd55fd291a95e133 (diff)
sh: Bring the SH-5 FPU in line with the SH-4 FPU API.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/fpu.h')
-rw-r--r--include/asm-sh/fpu.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-sh/fpu.h b/include/asm-sh/fpu.h
new file mode 100644
index 000000000000..33db698a6b4d
--- /dev/null
+++ b/include/asm-sh/fpu.h
@@ -0,0 +1,44 @@
1#ifndef __ASM_SH_FPU_H
2#define __ASM_SH_FPU_H
3
4#define SR_FD 0x00008000
5
6#ifndef __ASSEMBLY__
7#include <asm/ptrace.h>
8
9#ifdef CONFIG_SH_FPU
10static inline void release_fpu(struct pt_regs *regs)
11{
12 regs->sr |= SR_FD;
13}
14
15static inline void grab_fpu(struct pt_regs *regs)
16{
17 regs->sr &= ~SR_FD;
18}
19
20struct task_struct;
21
22extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
23#else
24#define release_fpu(regs) do { } while (0)
25#define grab_fpu(regs) do { } while (0)
26#define save_fpu(tsk, regs) do { } while (0)
27#endif
28
29#define unlazy_fpu(tsk, regs) do { \
30 if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
31 save_fpu(tsk, regs); \
32 } \
33} while (0)
34
35#define clear_fpu(tsk, regs) do { \
36 if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
37 clear_tsk_thread_flag(tsk, TIF_USEDFPU); \
38 release_fpu(regs); \
39 } \
40} while (0)
41
42#endif /* __ASSEMBLY__ */
43
44#endif /* __ASM_SH_FPU_H */