| Anton Blanchard | 64ff312 | 2010-08-12 16:28:09 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the Free Software |
| 14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 15 | * |
| 16 | * Copyright (C) IBM Corporation, 2010 |
| 17 | * |
| 18 | * Author: Anton Blanchard <anton@au.ibm.com> |
| 19 | */ |
| 20 | #include <asm/processor.h> |
| 21 | #include <asm/ppc_asm.h> |
| 22 | |
| 23 | /* Note: This code relies on -mminimal-toc */ |
| 24 | |
| 25 | _GLOBAL(__arch_hweight8) |
| 26 | BEGIN_FTR_SECTION |
| 27 | b .__sw_hweight8 |
| 28 | nop |
| 29 | nop |
| 30 | FTR_SECTION_ELSE |
| 31 | popcntb r3,r3 |
| 32 | clrldi r3,r3,64-8 |
| 33 | blr |
| 34 | ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| 35 | |
| 36 | _GLOBAL(__arch_hweight16) |
| 37 | BEGIN_FTR_SECTION |
| 38 | b .__sw_hweight16 |
| 39 | nop |
| 40 | nop |
| 41 | nop |
| 42 | nop |
| 43 | FTR_SECTION_ELSE |
| 44 | BEGIN_FTR_SECTION_NESTED(50) |
| 45 | popcntb r3,r3 |
| 46 | srdi r4,r3,8 |
| 47 | add r3,r4,r3 |
| 48 | clrldi r3,r3,64-8 |
| 49 | blr |
| 50 | FTR_SECTION_ELSE_NESTED(50) |
| 51 | clrlwi r3,r3,16 |
| 52 | popcntw r3,r3 |
| 53 | clrldi r3,r3,64-8 |
| 54 | blr |
| 55 | ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50) |
| 56 | ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| 57 | |
| 58 | _GLOBAL(__arch_hweight32) |
| 59 | BEGIN_FTR_SECTION |
| 60 | b .__sw_hweight32 |
| 61 | nop |
| 62 | nop |
| 63 | nop |
| 64 | nop |
| 65 | nop |
| 66 | nop |
| 67 | FTR_SECTION_ELSE |
| 68 | BEGIN_FTR_SECTION_NESTED(51) |
| 69 | popcntb r3,r3 |
| 70 | srdi r4,r3,16 |
| 71 | add r3,r4,r3 |
| 72 | srdi r4,r3,8 |
| 73 | add r3,r4,r3 |
| 74 | clrldi r3,r3,64-8 |
| 75 | blr |
| 76 | FTR_SECTION_ELSE_NESTED(51) |
| 77 | popcntw r3,r3 |
| 78 | clrldi r3,r3,64-8 |
| 79 | blr |
| 80 | ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51) |
| 81 | ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| 82 | |
| 83 | _GLOBAL(__arch_hweight64) |
| 84 | BEGIN_FTR_SECTION |
| 85 | b .__sw_hweight64 |
| 86 | nop |
| 87 | nop |
| 88 | nop |
| 89 | nop |
| 90 | nop |
| 91 | nop |
| 92 | nop |
| 93 | nop |
| 94 | FTR_SECTION_ELSE |
| 95 | BEGIN_FTR_SECTION_NESTED(52) |
| 96 | popcntb r3,r3 |
| 97 | srdi r4,r3,32 |
| 98 | add r3,r4,r3 |
| 99 | srdi r4,r3,16 |
| 100 | add r3,r4,r3 |
| 101 | srdi r4,r3,8 |
| 102 | add r3,r4,r3 |
| 103 | clrldi r3,r3,64-8 |
| 104 | blr |
| 105 | FTR_SECTION_ELSE_NESTED(52) |
| 106 | popcntd r3,r3 |
| 107 | clrldi r3,r3,64-8 |
| 108 | blr |
| 109 | ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52) |
| 110 | ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |