| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* include/asm/current.h |
| 3 | * |
| 4 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 5 | * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) |
| 6 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) |
| 7 | * |
| 8 | * Derived from "include/asm-s390/current.h" by |
| 9 | * Martin Schwidefsky (schwidefsky@de.ibm.com) |
| 10 | * Derived from "include/asm-i386/current.h" |
| 11 | */ |
| 12 | #ifndef _SPARC_CURRENT_H |
| 13 | #define _SPARC_CURRENT_H |
| 14 | |
| 15 | #include <linux/thread_info.h> |
| 16 | |
| 17 | #ifdef CONFIG_SPARC64 |
| 18 | register struct task_struct *current asm("g4"); |
| 19 | #endif |
| 20 | |
| 21 | #ifdef CONFIG_SPARC32 |
| 22 | /* We might want to consider using %g4 like sparc64 to shave a few cycles. |
| 23 | * |
| 24 | * Two stage process (inline + #define) for type-checking. |
| 25 | * We also obfuscate get_current() to check if anyone used that by mistake. |
| 26 | */ |
| 27 | struct task_struct; |
| 28 | static inline struct task_struct *__get_current(void) |
| 29 | { |
| 30 | return current_thread_info()->task; |
| 31 | } |
| 32 | #define current __get_current() |
| 33 | #endif |
| 34 | |
| 35 | #endif /* !(_SPARC_CURRENT_H) */ |