sh: Add FPU registers to regset interface.

[linux-2.6-omap-h63xx.git] / arch / sh / include / asm / fpu.h

diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h
index 91462fea1507c69af30d42a8e2315e8730ced5b0..1d3aee04b5ccc4c3c0181ead9ca3401733a6ece2 100644 (file)
--- a/arch/sh/include/asm/fpu.h
+++ b/arch/sh/include/asm/fpu.h
@@ -30,8 +30,15 @@ static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
 }
 #endif
 
+struct user_regset;
+
 extern int do_fpu_inst(unsigned short, struct pt_regs *);
 
+extern int fpregs_get(struct task_struct *target,
+                     const struct user_regset *regset,
+                     unsigned int pos, unsigned int count,
+                     void *kbuf, void __user *ubuf);
+
 static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
 {
        preempt_disable();
@@ -50,6 +57,18 @@ static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
        preempt_enable();
 }
 
+static inline int init_fpu(struct task_struct *tsk)
+{
+       if (tsk_used_math(tsk)) {
+               if ((boot_cpu_data.flags & CPU_HAS_FPU) && tsk == current)
+                       unlazy_fpu(tsk, task_pt_regs(tsk));
+               return 0;
+       }
+
+       set_stopped_child_used_math(tsk);
+       return 0;
+}
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_SH_FPU_H */