105 lines
1.8 KiB
ArmAsm
105 lines
1.8 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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*
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* Copyright (C) IBM Corporation, 2010
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*
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* Author: Anton Blanchard <anton@au.ibm.com>
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*/
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#include <asm/processor.h>
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#include <asm/ppc_asm.h>
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#include <asm/export.h>
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#include <asm/feature-fixups.h>
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/* Note: This code relies on -mminimal-toc */
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_GLOBAL(__arch_hweight8)
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BEGIN_FTR_SECTION
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b __sw_hweight8
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nop
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nop
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FTR_SECTION_ELSE
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PPC_POPCNTB(R3,R3)
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clrldi r3,r3,64-8
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blr
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
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EXPORT_SYMBOL(__arch_hweight8)
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_GLOBAL(__arch_hweight16)
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BEGIN_FTR_SECTION
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b __sw_hweight16
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nop
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nop
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nop
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nop
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FTR_SECTION_ELSE
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BEGIN_FTR_SECTION_NESTED(50)
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PPC_POPCNTB(R3,R3)
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srdi r4,r3,8
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add r3,r4,r3
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clrldi r3,r3,64-8
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blr
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FTR_SECTION_ELSE_NESTED(50)
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clrlwi r3,r3,16
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PPC_POPCNTW(R3,R3)
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clrldi r3,r3,64-8
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blr
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ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50)
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
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EXPORT_SYMBOL(__arch_hweight16)
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_GLOBAL(__arch_hweight32)
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BEGIN_FTR_SECTION
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b __sw_hweight32
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nop
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nop
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nop
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nop
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nop
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nop
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FTR_SECTION_ELSE
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BEGIN_FTR_SECTION_NESTED(51)
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PPC_POPCNTB(R3,R3)
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srdi r4,r3,16
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add r3,r4,r3
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srdi r4,r3,8
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add r3,r4,r3
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clrldi r3,r3,64-8
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blr
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FTR_SECTION_ELSE_NESTED(51)
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PPC_POPCNTW(R3,R3)
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clrldi r3,r3,64-8
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blr
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ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51)
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
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EXPORT_SYMBOL(__arch_hweight32)
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_GLOBAL(__arch_hweight64)
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BEGIN_FTR_SECTION
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b __sw_hweight64
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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nop
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FTR_SECTION_ELSE
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BEGIN_FTR_SECTION_NESTED(52)
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PPC_POPCNTB(R3,R3)
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srdi r4,r3,32
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add r3,r4,r3
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srdi r4,r3,16
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add r3,r4,r3
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srdi r4,r3,8
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add r3,r4,r3
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clrldi r3,r3,64-8
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blr
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FTR_SECTION_ELSE_NESTED(52)
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PPC_POPCNTD(R3,R3)
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clrldi r3,r3,64-8
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blr
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ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52)
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ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
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EXPORT_SYMBOL(__arch_hweight64)
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