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104 lines
1.8 KiB
104 lines
1.8 KiB
/* 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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