| /* 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) |