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Diffstat (limited to 'kernel/arch/sparc/include/asm/current.h')
| -rw-r--r-- | kernel/arch/sparc/include/asm/current.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/sparc/include/asm/current.h b/kernel/arch/sparc/include/asm/current.h new file mode 100644 index 000000000..10a0df55a --- /dev/null +++ b/kernel/arch/sparc/include/asm/current.h @@ -0,0 +1,34 @@ +/* include/asm/current.h + * + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) + * Copyright (C) 2007 David S. Miller (davem@davemloft.net) + * + * Derived from "include/asm-s390/current.h" by + * Martin Schwidefsky (schwidefsky@de.ibm.com) + * Derived from "include/asm-i386/current.h" +*/ +#ifndef _SPARC_CURRENT_H +#define _SPARC_CURRENT_H + +#include <linux/thread_info.h> + +#ifdef CONFIG_SPARC64 +register struct task_struct *current asm("g4"); +#endif + +#ifdef CONFIG_SPARC32 +/* We might want to consider using %g4 like sparc64 to shave a few cycles. + * + * Two stage process (inline + #define) for type-checking. + * We also obfuscate get_current() to check if anyone used that by mistake. + */ +struct task_struct; +static inline struct task_struct *__get_current(void) +{ + return current_thread_info()->task; +} +#define current __get_current() +#endif + +#endif /* !(_SPARC_CURRENT_H) */ |