Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.9 / b119fa61d440fe0f5af504299ad506637585a8ca / . / arch / powerpc / lib / hweight_64.S
blob: 9b96ff2ecd4dadb0aae350e80fde94fb93afb20b [file] [log] [blame]
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 *
16 * Copyright (C) IBM Corporation, 2010
17 *
18 * Author: Anton Blanchard <anton@au.ibm.com>
19 */
20#include <asm/processor.h>
21#include <asm/ppc_asm.h>
22
23/* Note: This code relies on -mminimal-toc */
24
25_GLOBAL(__arch_hweight8)
26BEGIN_FTR_SECTION
27 b .__sw_hweight8
28 nop
29 nop
30FTR_SECTION_ELSE
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]31 PPC_POPCNTB(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]32 clrldi r3,r3,64-8
33 blr
34ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
35
36_GLOBAL(__arch_hweight16)
37BEGIN_FTR_SECTION
38 b .__sw_hweight16
39 nop
40 nop
41 nop
42 nop
43FTR_SECTION_ELSE
44 BEGIN_FTR_SECTION_NESTED(50)
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]45 PPC_POPCNTB(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]46 srdi r4,r3,8
47 add r3,r4,r3
48 clrldi r3,r3,64-8
49 blr
50 FTR_SECTION_ELSE_NESTED(50)
51 clrlwi r3,r3,16
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]52 PPC_POPCNTW(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]53 clrldi r3,r3,64-8
54 blr
55 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50)
56ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
57
58_GLOBAL(__arch_hweight32)
59BEGIN_FTR_SECTION
60 b .__sw_hweight32
61 nop
62 nop
63 nop
64 nop
65 nop
66 nop
67FTR_SECTION_ELSE
68 BEGIN_FTR_SECTION_NESTED(51)
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]69 PPC_POPCNTB(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]70 srdi r4,r3,16
71 add r3,r4,r3
72 srdi r4,r3,8
73 add r3,r4,r3
74 clrldi r3,r3,64-8
75 blr
76 FTR_SECTION_ELSE_NESTED(51)
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]77 PPC_POPCNTW(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]78 clrldi r3,r3,64-8
79 blr
80 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51)
81ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
82
83_GLOBAL(__arch_hweight64)
84BEGIN_FTR_SECTION
85 b .__sw_hweight64
86 nop
87 nop
88 nop
89 nop
90 nop
91 nop
92 nop
93 nop
94FTR_SECTION_ELSE
95 BEGIN_FTR_SECTION_NESTED(52)
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]96 PPC_POPCNTB(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]97 srdi r4,r3,32
98 add r3,r4,r3
99 srdi r4,r3,16
100 add r3,r4,r3
101 srdi r4,r3,8
102 add r3,r4,r3
103 clrldi r3,r3,64-8
104 blr
105 FTR_SECTION_ELSE_NESTED(52)
Michael Neulingc75df6f2012-06-25 13:33:10 +0000[diff] [blame]106 PPC_POPCNTD(R3,R3)
Anton Blanchard64ff3122010-08-12 16:28:09 +0000[diff] [blame]107 clrldi r3,r3,64-8
108 blr
109 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52)
110ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)