18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * OpenRISC Linux 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#ifndef __ASM_OPENRISC___FFS_H 98c2ecf20Sopenharmony_ci#define __ASM_OPENRISC___FFS_H 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#ifdef CONFIG_OPENRISC_HAVE_INST_FF1 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_cistatic inline unsigned long __ffs(unsigned long x) 158c2ecf20Sopenharmony_ci{ 168c2ecf20Sopenharmony_ci int ret; 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci __asm__ ("l.ff1 %0,%1" 198c2ecf20Sopenharmony_ci : "=r" (ret) 208c2ecf20Sopenharmony_ci : "r" (x)); 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci return ret-1; 238c2ecf20Sopenharmony_ci} 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci#else 268c2ecf20Sopenharmony_ci#include <asm-generic/bitops/__ffs.h> 278c2ecf20Sopenharmony_ci#endif 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci#endif /* __ASM_OPENRISC___FFS_H */ 30