1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef _ASM_POWERPC_CURRENT_H 3 #define _ASM_POWERPC_CURRENT_H 4 #ifdef __KERNEL__ 5 6 /* 7 */ 8 9 struct task_struct; 10 11 #ifdef __powerpc64__ 12 #include <linux/stddef.h> 13 #include <asm/paca.h> 14 15 static inline struct task_struct *get_current(void) 16 { 17 struct task_struct *task; 18 19 /* get_current can be cached by the compiler, so no volatile */ 20 asm ("ld %0,%1(13)" 21 : "=r" (task) 22 : "i" (offsetof(struct paca_struct, __current))); 23 24 return task; 25 } 26 #define current get_current() 27 28 #else 29 30 /* 31 * We keep `current' in r2 for speed. 32 */ 33 register struct task_struct *current asm ("r2"); 34 35 #endif 36 37 #endif /* __KERNEL__ */ 38 #endif /* _ASM_POWERPC_CURRENT_H */ 39