linux/arch/powerpc/lib/hweight_64.S
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

105 lines
1.8 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
*
* Copyright (C) IBM Corporation, 2010
*
* Author: Anton Blanchard <anton@au.ibm.com>
*/
#include <asm/processor.h>
#include <asm/ppc_asm.h>
#include <asm/export.h>
#include <asm/feature-fixups.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)
EXPORT_SYMBOL(__arch_hweight8)
_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)
EXPORT_SYMBOL(__arch_hweight16)
_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)
EXPORT_SYMBOL(__arch_hweight32)
_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)
EXPORT_SYMBOL(__arch_hweight64)