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+/*
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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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+
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+/* Note: This code relies on -mminimal-toc */
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+
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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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+ 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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+
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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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+ 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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+ 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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+
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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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+ 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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+ 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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+
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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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+ 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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+ 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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