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#include <asm/export.h> 23 24/* Note: This code relies on -mminimal-toc */ 25 26_GLOBAL(__arch_hweight8) 27BEGIN_FTR_SECTION 28 b __sw_hweight8 29 nop 30 nop 31FTR_SECTION_ELSE 32 PPC_POPCNTB(R3,R3) 33 clrldi r3,r3,64-8 34 blr 35ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 36EXPORT_SYMBOL(__arch_hweight8) 37 38_GLOBAL(__arch_hweight16) 39BEGIN_FTR_SECTION 40 b __sw_hweight16 41 nop 42 nop 43 nop 44 nop 45FTR_SECTION_ELSE 46 BEGIN_FTR_SECTION_NESTED(50) 47 PPC_POPCNTB(R3,R3) 48 srdi r4,r3,8 49 add r3,r4,r3 50 clrldi r3,r3,64-8 51 blr 52 FTR_SECTION_ELSE_NESTED(50) 53 clrlwi r3,r3,16 54 PPC_POPCNTW(R3,R3) 55 clrldi r3,r3,64-8 56 blr 57 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50) 58ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 59EXPORT_SYMBOL(__arch_hweight16) 60 61_GLOBAL(__arch_hweight32) 62BEGIN_FTR_SECTION 63 b __sw_hweight32 64 nop 65 nop 66 nop 67 nop 68 nop 69 nop 70FTR_SECTION_ELSE 71 BEGIN_FTR_SECTION_NESTED(51) 72 PPC_POPCNTB(R3,R3) 73 srdi r4,r3,16 74 add r3,r4,r3 75 srdi r4,r3,8 76 add r3,r4,r3 77 clrldi r3,r3,64-8 78 blr 79 FTR_SECTION_ELSE_NESTED(51) 80 PPC_POPCNTW(R3,R3) 81 clrldi r3,r3,64-8 82 blr 83 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51) 84ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 85EXPORT_SYMBOL(__arch_hweight32) 86 87_GLOBAL(__arch_hweight64) 88BEGIN_FTR_SECTION 89 b __sw_hweight64 90 nop 91 nop 92 nop 93 nop 94 nop 95 nop 96 nop 97 nop 98FTR_SECTION_ELSE 99 BEGIN_FTR_SECTION_NESTED(52) 100 PPC_POPCNTB(R3,R3) 101 srdi r4,r3,32 102 add r3,r4,r3 103 srdi r4,r3,16 104 add r3,r4,r3 105 srdi r4,r3,8 106 add r3,r4,r3 107 clrldi r3,r3,64-8 108 blr 109 FTR_SECTION_ELSE_NESTED(52) 110 PPC_POPCNTD(R3,R3) 111 clrldi r3,r3,64-8 112 blr 113 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52) 114ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 115EXPORT_SYMBOL(__arch_hweight64) 116