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) 26BEGIN_FTR_SECTION 27 b .__sw_hweight8 28 nop 29 nop 30FTR_SECTION_ELSE 31 PPC_POPCNTB(R3,R3) 32 clrldi r3,r3,64-8 33 blr 34ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 35 36_GLOBAL(__arch_hweight16) 37BEGIN_FTR_SECTION 38 b .__sw_hweight16 39 nop 40 nop 41 nop 42 nop 43FTR_SECTION_ELSE 44 BEGIN_FTR_SECTION_NESTED(50) 45 PPC_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 PPC_POPCNTW(R3,R3) 53 clrldi r3,r3,64-8 54 blr 55 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50) 56ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 57 58_GLOBAL(__arch_hweight32) 59BEGIN_FTR_SECTION 60 b .__sw_hweight32 61 nop 62 nop 63 nop 64 nop 65 nop 66 nop 67FTR_SECTION_ELSE 68 BEGIN_FTR_SECTION_NESTED(51) 69 PPC_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 PPC_POPCNTW(R3,R3) 78 clrldi r3,r3,64-8 79 blr 80 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51) 81ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 82 83_GLOBAL(__arch_hweight64) 84BEGIN_FTR_SECTION 85 b .__sw_hweight64 86 nop 87 nop 88 nop 89 nop 90 nop 91 nop 92 nop 93 nop 94FTR_SECTION_ELSE 95 BEGIN_FTR_SECTION_NESTED(52) 96 PPC_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 PPC_POPCNTD(R3,R3) 107 clrldi r3,r3,64-8 108 blr 109 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52) 110ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) 111