powerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs
[linux-2.6.git] / arch / powerpc / lib / hweight_64.S
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)
26 BEGIN_FTR_SECTION
27         b .__sw_hweight8
28         nop
29         nop
30 FTR_SECTION_ELSE
31         PPC_POPCNTB(r3,r3)
32         clrldi  r3,r3,64-8
33         blr
34 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
35
36 _GLOBAL(__arch_hweight16)
37 BEGIN_FTR_SECTION
38         b .__sw_hweight16
39         nop
40         nop
41         nop
42         nop
43 FTR_SECTION_ELSE
44   BEGIN_FTR_SECTION_NESTED(50)
45         PPC_POPCNTB(r3,r3)
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
52         PPC_POPCNTW(r3,r3)
53         clrldi  r3,r3,64-8
54         blr
55   ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50)
56 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
57
58 _GLOBAL(__arch_hweight32)
59 BEGIN_FTR_SECTION
60         b .__sw_hweight32
61         nop
62         nop
63         nop
64         nop
65         nop
66         nop
67 FTR_SECTION_ELSE
68   BEGIN_FTR_SECTION_NESTED(51)
69         PPC_POPCNTB(r3,r3)
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)
77         PPC_POPCNTW(r3,r3)
78         clrldi  r3,r3,64-8
79         blr
80   ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51)
81 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
82
83 _GLOBAL(__arch_hweight64)
84 BEGIN_FTR_SECTION
85         b .__sw_hweight64
86         nop
87         nop
88         nop
89         nop
90         nop
91         nop
92         nop
93         nop
94 FTR_SECTION_ELSE
95   BEGIN_FTR_SECTION_NESTED(52)
96         PPC_POPCNTB(r3,r3)
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)
106         PPC_POPCNTD(r3,r3)
107         clrldi  r3,r3,64-8
108         blr
109   ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52)
110 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)