1 /* include/asm/current.h 2 * 3 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation 4 * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) 5 * Copyright (C) 2007 David S. Miller (davem@davemloft.net) 6 * 7 * Derived from "include/asm-s390/current.h" by 8 * Martin Schwidefsky (schwidefsky@de.ibm.com) 9 * Derived from "include/asm-i386/current.h" 10 */ 11 #ifndef _SPARC_CURRENT_H 12 #define _SPARC_CURRENT_H 13 14 #include <linux/thread_info.h> 15 16 #ifdef CONFIG_SPARC64 17 register struct task_struct *current asm("g4"); 18 #endif 19 20 #ifdef CONFIG_SPARC32 21 /* We might want to consider using %g4 like sparc64 to shave a few cycles. 22 * 23 * Two stage process (inline + #define) for type-checking. 24 * We also obfuscate get_current() to check if anyone used that by mistake. 25 */ 26 struct task_struct; 27 static inline struct task_struct *__get_current(void) 28 { 29 return current_thread_info()->task; 30 } 31 #define current __get_current() 32 #endif 33 34 #endif /* !(_SPARC_CURRENT_H) */ 35