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
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