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sys/compat/linuxkpi/common/include/linux/bitops.h
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||||
* | * | ||||
* $FreeBSD$ | * $FreeBSD$ | ||||
*/ | */ | ||||
#ifndef _LINUX_BITOPS_H_ | #ifndef _LINUXKPI_LINUX_BITOPS_H_ | ||||
#define _LINUX_BITOPS_H_ | #define _LINUXKPI_LINUX_BITOPS_H_ | ||||
#include <sys/param.h> | #include <sys/param.h> | ||||
#include <sys/types.h> | #include <sys/types.h> | ||||
#include <sys/systm.h> | #include <sys/systm.h> | ||||
#include <sys/errno.h> | #include <sys/errno.h> | ||||
#include <sys/libkern.h> | #include <sys/libkern.h> | ||||
#define BIT(nr) (1UL << (nr)) | #define BIT(nr) (1UL << (nr)) | ||||
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static inline uint32_t | static inline uint32_t | ||||
sign_extend32(uint32_t value, int index) | sign_extend32(uint32_t value, int index) | ||||
{ | { | ||||
uint8_t shift = 31 - index; | uint8_t shift = 31 - index; | ||||
return ((int32_t)(value << shift) >> shift); | return ((int32_t)(value << shift) >> shift); | ||||
} | } | ||||
#endif /* _LINUX_BITOPS_H_ */ | #endif /* _LINUXKPI_LINUX_BITOPS_H_ */ |