1 #ifndef _ASM_POWERPC_CURRENT_H 2 #define _ASM_POWERPC_CURRENT_H 3 #ifdef __KERNEL__ 4 5 /* 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 struct task_struct; 13 14 #ifdef __powerpc64__ 15 #include <linux/stddef.h> 16 #include <asm/paca.h> 17 18 static inline struct task_struct *get_current(void) 19 { 20 struct task_struct *task; 21 22 __asm__ __volatile__("ld %0,%1(13)" 23 : "=r" (task) 24 : "i" (offsetof(struct paca_struct, __current))); 25 26 return task; 27 } 28 #define current get_current() 29 30 #else 31 32 /* 33 * We keep `current' in r2 for speed. 34 */ 35 register struct task_struct *current asm ("r2"); 36 37 #endif 38 39 #endif /* __KERNEL__ */ 40 #endif /* _ASM_POWERPC_CURRENT_H */ 41