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a72cc2b2 LM |
1 | /* Processor capability information handling macros. PowerPC version. |
2 | Copyright (C) 2005, 2006, 2008 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
a72cc2b2 LM |
18 | |
19 | #ifndef _DL_PROCINFO_H | |
20 | #define _DL_PROCINFO_H 1 | |
21 | ||
22 | #include <ldsodefs.h> | |
23 | #include <sysdep.h> /* This defines the PPC_FEATURE_* macros. */ | |
24 | ||
25 | /* There are 25 bits used, but they are bits 7..31. */ | |
26 | #define _DL_HWCAP_FIRST 7 | |
27 | #define _DL_HWCAP_COUNT 32 | |
28 | ||
29 | /* These bits influence library search. */ | |
30 | #define HWCAP_IMPORTANT (PPC_FEATURE_HAS_ALTIVEC \ | |
31 | + PPC_FEATURE_HAS_DFP) | |
32 | ||
33 | #define _DL_PLATFORMS_COUNT 12 | |
34 | ||
35 | #define _DL_FIRST_PLATFORM 32 | |
36 | /* Mask to filter out platforms. */ | |
37 | #define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \ | |
38 | << _DL_FIRST_PLATFORM) | |
39 | ||
40 | /* Platform bits (relative to _DL_FIRST_PLATFORM). */ | |
41 | #define PPC_PLATFORM_POWER4 0 | |
42 | #define PPC_PLATFORM_PPC970 1 | |
43 | #define PPC_PLATFORM_POWER5 2 | |
44 | #define PPC_PLATFORM_POWER5_PLUS 3 | |
45 | #define PPC_PLATFORM_POWER6 4 | |
46 | #define PPC_PLATFORM_CELL_BE 5 | |
47 | #define PPC_PLATFORM_POWER6X 6 | |
48 | #define PPC_PLATFORM_POWER7 7 | |
49 | #define PPC_PLATFORM_PPC405 8 | |
50 | #define PPC_PLATFORM_PPC440 9 | |
51 | #define PPC_PLATFORM_PPC464 10 | |
52 | #define PPC_PLATFORM_PPC476 11 | |
53 | ||
54 | static inline const char * | |
55 | __attribute__ ((unused)) | |
56 | _dl_hwcap_string (int idx) | |
57 | { | |
58 | return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST]; | |
59 | } | |
60 | ||
61 | static inline const char * | |
62 | __attribute__ ((unused)) | |
63 | _dl_platform_string (int idx) | |
64 | { | |
65 | return GLRO(dl_powerpc_platforms)[idx - _DL_FIRST_PLATFORM]; | |
66 | } | |
67 | ||
68 | static inline int | |
69 | __attribute__ ((unused)) | |
70 | _dl_string_hwcap (const char *str) | |
71 | { | |
72 | for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i) | |
73 | if (strcmp (str, _dl_hwcap_string (i)) == 0) | |
74 | return i; | |
75 | return -1; | |
76 | } | |
77 | ||
78 | static inline int | |
79 | __attribute__ ((unused, always_inline)) | |
80 | _dl_string_platform (const char *str) | |
81 | { | |
82 | if (str == NULL) | |
83 | return -1; | |
84 | ||
85 | if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_POWER4], 5) == 0) | |
86 | { | |
87 | int ret; | |
88 | str += 5; | |
89 | switch (*str) | |
90 | { | |
91 | case '4': | |
92 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4; | |
93 | break; | |
94 | case '5': | |
95 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5; | |
96 | if (str[1] == '+') | |
97 | { | |
98 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS; | |
99 | ++str; | |
100 | } | |
101 | break; | |
102 | case '6': | |
103 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6; | |
104 | if (str[1] == 'x') | |
105 | { | |
106 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X; | |
107 | ++str; | |
108 | } | |
109 | break; | |
110 | case '7': | |
111 | ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7; | |
112 | break; | |
113 | default: | |
114 | return -1; | |
115 | } | |
116 | if (str[1] == '\0') | |
117 | return ret; | |
118 | } | |
119 | else if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970], | |
120 | 3) == 0) | |
121 | { | |
122 | if (strcmp (str + 3, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970] | |
123 | + 3) == 0) | |
124 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970; | |
125 | else if (strcmp (str + 3, | |
126 | GLRO(dl_powerpc_platforms)[PPC_PLATFORM_CELL_BE] + 3) | |
127 | == 0) | |
128 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE; | |
129 | else if (strcmp (str + 3, | |
130 | GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC405] + 3) | |
131 | == 0) | |
132 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405; | |
133 | else if (strcmp (str + 3, | |
134 | GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC440] + 3) | |
135 | == 0) | |
136 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440; | |
137 | else if (strcmp (str + 3, | |
138 | GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC464] + 3) | |
139 | == 0) | |
140 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464; | |
141 | else if (strcmp (str + 3, | |
142 | GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC476] + 3) | |
143 | == 0) | |
144 | return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476; | |
145 | } | |
146 | ||
147 | return -1; | |
148 | } | |
149 | ||
150 | #ifdef IS_IN_rtld | |
151 | static inline int | |
152 | __attribute__ ((unused)) | |
153 | _dl_procinfo (int word) | |
154 | { | |
155 | _dl_printf ("AT_HWCAP: "); | |
156 | ||
157 | for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i) | |
158 | if (word & (1 << i)) | |
159 | _dl_printf (" %s", _dl_hwcap_string (i)); | |
160 | ||
161 | _dl_printf ("\n"); | |
162 | ||
163 | return 0; | |
164 | } | |
165 | #endif | |
166 | ||
167 | #endif /* dl-procinfo.h */ |