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| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
|---|---|
| 2 | /* |
| 3 | * OpenRISC Linux |
| 4 | * |
| 5 | * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> |
| 6 | */ |
| 7 | |
| 8 | #ifndef __ASM_OPENRISC___FFS_H |
| 9 | #define __ASM_OPENRISC___FFS_H |
| 10 | |
| 11 | |
| 12 | #ifdef CONFIG_OPENRISC_HAVE_INST_FF1 |
| 13 | |
| 14 | static inline __attribute_const__ unsigned long __ffs(unsigned long x) |
| 15 | { |
| 16 | int ret; |
| 17 | |
| 18 | __asm__ ("l.ff1 %0,%1" |
| 19 | : "=r" (ret) |
| 20 | : "r" (x)); |
| 21 | |
| 22 | return ret-1; |
| 23 | } |
| 24 | |
| 25 | #else |
| 26 | #include <asm-generic/bitops/__ffs.h> |
| 27 | #endif |
| 28 | |
| 29 | #endif /* __ASM_OPENRISC___FFS_H */ |
| 30 |
Warning: This file is not a C or C++ file. It does not have highlighting.