1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/* Processor capability information handling macros. PowerPC version.
Copyright (C) 2005-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H 1
#include <ldsodefs.h>
#include <sysdep.h> /* This defines the PPC_FEATURE[2]_* macros. */
/* There are 25 bits used, but they are bits 7..31. */
#define _DL_HWCAP_FIRST 7
/* The total number of available bits (including those prior to
_DL_HWCAP_FIRST). Some of these bits might not be used. */
#define _DL_HWCAP_COUNT 64
/* Features started at bit 31 and decremented as new features were added. */
#define _DL_HWCAP_LAST 31
/* AT_HWCAP2 features started at bit 31 and decremented as new features were
added. HWCAP2 feature bits start at bit 0. */
#define _DL_HWCAP2_LAST 31
/* These bits influence library search. */
#define HWCAP_IMPORTANT (PPC_FEATURE_HAS_ALTIVEC \
+ PPC_FEATURE_HAS_DFP)
#define _DL_PLATFORMS_COUNT 14
#define _DL_FIRST_PLATFORM 32
/* Mask to filter out platforms. */
#define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
<< _DL_FIRST_PLATFORM)
/* Platform bits (relative to _DL_FIRST_PLATFORM). */
#define PPC_PLATFORM_POWER4 0
#define PPC_PLATFORM_PPC970 1
#define PPC_PLATFORM_POWER5 2
#define PPC_PLATFORM_POWER5_PLUS 3
#define PPC_PLATFORM_POWER6 4
#define PPC_PLATFORM_CELL_BE 5
#define PPC_PLATFORM_POWER6X 6
#define PPC_PLATFORM_POWER7 7
#define PPC_PLATFORM_PPCA2 8
#define PPC_PLATFORM_PPC405 9
#define PPC_PLATFORM_PPC440 10
#define PPC_PLATFORM_PPC464 11
#define PPC_PLATFORM_PPC476 12
#define PPC_PLATFORM_POWER8 13
static inline const char *
__attribute__ ((unused))
_dl_hwcap_string (int idx)
{
return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST];
}
static inline const char *
__attribute__ ((unused))
_dl_platform_string (int idx)
{
return GLRO(dl_powerpc_platforms)[idx - _DL_FIRST_PLATFORM];
}
static inline int
__attribute__ ((unused))
_dl_string_hwcap (const char *str)
{
for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
if (strcmp (str, _dl_hwcap_string (i)) == 0)
return i;
return -1;
}
static inline int
__attribute__ ((unused, always_inline))
_dl_string_platform (const char *str)
{
if (str == NULL)
return -1;
if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_POWER4], 5) == 0)
{
int ret;
str += 5;
switch (*str)
{
case '4':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;
break;
case '5':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;
if (str[1] == '+')
{
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;
++str;
}
break;
case '6':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;
if (str[1] == 'x')
{
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;
++str;
}
break;
case '7':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;
break;
case '8':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER8;
break;
default:
return -1;
}
if (str[1] == '\0')
return ret;
}
else if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970],
3) == 0)
{
if (strcmp (str + 3, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970]
+ 3) == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_CELL_BE] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPCA2] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPCA2;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC405] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC440] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC464] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;
else if (strcmp (str + 3,
GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC476] + 3)
== 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;
}
return -1;
}
#if IS_IN (rtld)
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
{
switch(type)
{
case AT_HWCAP:
_dl_printf ("AT_HWCAP: ");
for (int i = _DL_HWCAP_FIRST; i <= _DL_HWCAP_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (i));
break;
case AT_HWCAP2:
{
unsigned int offset = _DL_HWCAP_LAST + 1;
_dl_printf ("AT_HWCAP2: ");
/* We have to go through them all because the kernel added the
AT_HWCAP2 features starting with the high bits. */
for (int i = 0; i <= _DL_HWCAP2_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (offset + i));
break;
}
default:
/* This should not happen. */
return -1;
}
_dl_printf ("\n");
return 0;
}
#endif
#endif /* dl-procinfo.h */
|
