| Thaminda Edirisooriya | 31f0521 | 2015-08-26 12:22:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013, The Regents of the University of California (Regents). |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * 3. Neither the name of the Regents nor the |
| 13 | * names of its contributors may be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, |
| 17 | * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING |
| 18 | * OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS |
| 19 | * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 20 | * |
| 21 | * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 22 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED |
| 24 | * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE |
| 25 | * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| 26 | */ |
| 27 | |
| 28 | #ifndef _BITS_H |
| 29 | #define _BITS_H |
| 30 | |
| 31 | #define CONST_POPCOUNT2(x) ((((x) >> 0) & 1) + (((x) >> 1) & 1)) |
| 32 | #define CONST_POPCOUNT4(x) (CONST_POPCOUNT2(x) + CONST_POPCOUNT2((x)>>2)) |
| 33 | #define CONST_POPCOUNT8(x) (CONST_POPCOUNT4(x) + CONST_POPCOUNT4((x)>>4)) |
| 34 | #define CONST_POPCOUNT16(x) (CONST_POPCOUNT8(x) + CONST_POPCOUNT8((x)>>8)) |
| 35 | #define CONST_POPCOUNT32(x) (CONST_POPCOUNT16(x) + CONST_POPCOUNT16((x)>>16)) |
| 36 | #define CONST_POPCOUNT64(x) (CONST_POPCOUNT32(x) + CONST_POPCOUNT32((x)>>32)) |
| 37 | #define CONST_POPCOUNT(x) CONST_POPCOUNT64(x) |
| 38 | |
| 39 | #define CONST_CTZ2(x) CONST_POPCOUNT2(((x) & -(x))-1) |
| 40 | #define CONST_CTZ4(x) CONST_POPCOUNT4(((x) & -(x))-1) |
| 41 | #define CONST_CTZ8(x) CONST_POPCOUNT8(((x) & -(x))-1) |
| 42 | #define CONST_CTZ16(x) CONST_POPCOUNT16(((x) & -(x))-1) |
| 43 | #define CONST_CTZ32(x) CONST_POPCOUNT32(((x) & -(x))-1) |
| 44 | #define CONST_CTZ64(x) CONST_POPCOUNT64(((x) & -(x))-1) |
| 45 | #define CONST_CTZ(x) CONST_CTZ64(x) |
| 46 | |
| 47 | #define STR(x) XSTR(x) |
| 48 | #define XSTR(x) #x |
| 49 | |
| 50 | # define SLL32 sllw |
| 51 | # define STORE sd |
| 52 | # define LOAD ld |
| 53 | # define LOG_REGBYTES 3 |
| 54 | |
| 55 | #define REGBYTES (1 << LOG_REGBYTES) |
| 56 | |
| 57 | #endif |