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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/powerpc/lib/hweight_64.S | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/lib/hweight_64.S')
| -rw-r--r-- | arch/powerpc/lib/hweight_64.S | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/powerpc/lib/hweight_64.S b/arch/powerpc/lib/hweight_64.S new file mode 100644 index 0000000000..151875050d --- /dev/null +++ b/arch/powerpc/lib/hweight_64.S @@ -0,0 +1,104 @@ +/* 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) |