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Add some more useful macros.

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Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
This commit is contained in:
Doug Rabson 1998-08-07 08:17:39 +00:00
parent a8360ebd82
commit 88db503390
1 changed files with 7 additions and 1 deletions
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8
sys/alpha/include/swiz.h
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $Id: swiz.h,v 1.1 1998/07/27 09:40:35 dfr Exp $
*/
#ifndef _MACHINE_SWIZ_H_
@ -40,11 +40,17 @@
#define SPARSE_WORD_OFFSET(o) (((o) << 5) | (1 << 3))
#define SPARSE_LONG_OFFSET(o) (((o) << 5) | (3 << 3))
#define SPARSE_BYTE_ADDRESS(base, o) ((base) + SPARSE_BYTE_OFFSET(o))
#define SPARSE_WORD_ADDRESS(base, o) ((base) + SPARSE_WORD_OFFSET(o))
#define SPARSE_LONG_ADDRESS(base, o) ((base) + SPARSE_LONG_OFFSET(o))
#define SPARSE_BYTE_EXTRACT(o, d) ((d) >> (8*((o) & 3)))
#define SPARSE_WORD_EXTRACT(o, d) ((d) >> (8*((o) & 2)))
#define SPARSE_LONG_EXTRACT(o, d) (d)
#define SPARSE_BYTE_INSERT(o, d) ((d) << (8*((o) & 3)))
#define SPARSE_WORD_INSERT(o, d) ((d) << (8*((o) & 2)))
#define SPARSE_LONG_INSERT(o, d) (d)
#define SPARSE_READ_BYTE(base, o) \
SPARSE_BYTE_EXTRACT(o, SPARSE_READ(base + SPARSE_BYTE_OFFSET(o)))