| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * |
| * Copyright (C) IBM Corporation, 2010 |
| * |
| * Author: Anton Blanchard <anton@au.ibm.com> |
| */ |
| #include <linux/export.h> |
| #include <asm/processor.h> |
| #include <asm/ppc_asm.h> |
| #include <asm/feature-fixups.h> |
| |
| /* Note: This code relies on -mminimal-toc */ |
| |
| _GLOBAL(__arch_hweight8) |
| BEGIN_FTR_SECTION |
| b CFUNC(__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) |
| EXPORT_SYMBOL(__arch_hweight8) |
| |
| _GLOBAL(__arch_hweight16) |
| BEGIN_FTR_SECTION |
| b CFUNC(__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) |
| EXPORT_SYMBOL(__arch_hweight16) |
| |
| _GLOBAL(__arch_hweight32) |
| BEGIN_FTR_SECTION |
| b CFUNC(__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) |
| EXPORT_SYMBOL(__arch_hweight32) |
| |
| _GLOBAL(__arch_hweight64) |
| BEGIN_FTR_SECTION |
| b CFUNC(__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) |
| EXPORT_SYMBOL(__arch_hweight64) |
