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64ff3128 AB |
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 | |
b1576fec | 27 | b __sw_hweight8 |
64ff3128 AB |
28 | nop |
29 | nop | |
30 | FTR_SECTION_ELSE | |
c75df6f9 | 31 | PPC_POPCNTB(R3,R3) |
64ff3128 AB |
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 | |
b1576fec | 38 | b __sw_hweight16 |
64ff3128 AB |
39 | nop |
40 | nop | |
41 | nop | |
42 | nop | |
43 | FTR_SECTION_ELSE | |
44 | BEGIN_FTR_SECTION_NESTED(50) | |
c75df6f9 | 45 | PPC_POPCNTB(R3,R3) |
64ff3128 AB |
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 | |
c75df6f9 | 52 | PPC_POPCNTW(R3,R3) |
64ff3128 AB |
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 | |
b1576fec | 60 | b __sw_hweight32 |
64ff3128 AB |
61 | nop |
62 | nop | |
63 | nop | |
64 | nop | |
65 | nop | |
66 | nop | |
67 | FTR_SECTION_ELSE | |
68 | BEGIN_FTR_SECTION_NESTED(51) | |
c75df6f9 | 69 | PPC_POPCNTB(R3,R3) |
64ff3128 AB |
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) | |
c75df6f9 | 77 | PPC_POPCNTW(R3,R3) |
64ff3128 AB |
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 | |
b1576fec | 85 | b __sw_hweight64 |
64ff3128 AB |
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) | |
c75df6f9 | 96 | PPC_POPCNTB(R3,R3) |
64ff3128 AB |
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) | |
c75df6f9 | 106 | PPC_POPCNTD(R3,R3) |
64ff3128 AB |
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) |