| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| * Copyright (C) IBM Corporation, 2010 |
| * |
| * Author: Anton Blanchard <anton@au.ibm.com> |
| */ |
| #include <asm/processor.h> |
| #include <asm/ppc_asm.h> |
| |
| /* Note: This code relies on -mminimal-toc */ |
| |
| _GLOBAL(__arch_hweight8) |
| BEGIN_FTR_SECTION |
| b .__sw_hweight8 |
| nop |
| nop |
| FTR_SECTION_ELSE |
| PPC_POPCNTB(r3,r3) |
| clrldi r3,r3,64-8 |
| blr |
| ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| |
| _GLOBAL(__arch_hweight16) |
| BEGIN_FTR_SECTION |
| b .__sw_hweight16 |
| nop |
| nop |
| nop |
| nop |
| FTR_SECTION_ELSE |
| BEGIN_FTR_SECTION_NESTED(50) |
| PPC_POPCNTB(r3,r3) |
| srdi r4,r3,8 |
| add r3,r4,r3 |
| clrldi r3,r3,64-8 |
| blr |
| FTR_SECTION_ELSE_NESTED(50) |
| clrlwi r3,r3,16 |
| PPC_POPCNTW(r3,r3) |
| clrldi r3,r3,64-8 |
| blr |
| ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50) |
| ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| |
| _GLOBAL(__arch_hweight32) |
| BEGIN_FTR_SECTION |
| b .__sw_hweight32 |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| FTR_SECTION_ELSE |
| BEGIN_FTR_SECTION_NESTED(51) |
| PPC_POPCNTB(r3,r3) |
| srdi r4,r3,16 |
| add r3,r4,r3 |
| srdi r4,r3,8 |
| add r3,r4,r3 |
| clrldi r3,r3,64-8 |
| blr |
| FTR_SECTION_ELSE_NESTED(51) |
| PPC_POPCNTW(r3,r3) |
| clrldi r3,r3,64-8 |
| blr |
| ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51) |
| ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |
| |
| _GLOBAL(__arch_hweight64) |
| BEGIN_FTR_SECTION |
| b .__sw_hweight64 |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| FTR_SECTION_ELSE |
| BEGIN_FTR_SECTION_NESTED(52) |
| PPC_POPCNTB(r3,r3) |
| srdi r4,r3,32 |
| add r3,r4,r3 |
| srdi r4,r3,16 |
| add r3,r4,r3 |
| srdi r4,r3,8 |
| add r3,r4,r3 |
| clrldi r3,r3,64-8 |
| blr |
| FTR_SECTION_ELSE_NESTED(52) |
| PPC_POPCNTD(r3,r3) |
| clrldi r3,r3,64-8 |
| blr |
| ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52) |
| ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB) |