1/* x86 version of hardware capability information handling macros.
2 Copyright (C) 2017 Free Software Foundation, Inc.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#ifndef _DL_HWCAP_H
19#define _DL_HWCAP_H
20
21#if IS_IN (ldconfig)
22/* Since ldconfig processes both i386 and x86-64 libraries, it needs
23 to cover all platforms and hardware capabilities. */
24# define HWCAP_PLATFORMS_START 0
25# define HWCAP_PLATFORMS_COUNT 4
26# define HWCAP_START 0
27# define HWCAP_COUNT 2
28# define HWCAP_IMPORTANT (HWCAP_X86_SSE2 | HWCAP_X86_AVX512_1)
29#elif defined __x86_64__
30/* For 64 bit, only cover x86-64 platforms and capabilities. */
31# define HWCAP_PLATFORMS_START 2
32# define HWCAP_PLATFORMS_COUNT 4
33# define HWCAP_START 1
34# define HWCAP_COUNT 2
35# define HWCAP_IMPORTANT (HWCAP_X86_AVX512_1)
36#else
37/* For 32 bit, only cover i586, i686 and SSE2. */
38# define HWCAP_PLATFORMS_START 0
39# define HWCAP_PLATFORMS_COUNT 2
40# define HWCAP_START 0
41# define HWCAP_COUNT 1
42# define HWCAP_IMPORTANT (HWCAP_X86_SSE2)
43#endif
44
45enum
46{
47 HWCAP_X86_SSE2 = 1 << 0,
48 HWCAP_X86_AVX512_1 = 1 << 1
49};
50
51static inline const char *
52__attribute__ ((unused))
53_dl_hwcap_string (int idx)
54{
55 return GLRO(dl_x86_hwcap_flags)[idx];
56};
57
58static inline int
59__attribute__ ((unused, always_inline))
60_dl_string_hwcap (const char *str)
61{
62 int i;
63
64 for (i = HWCAP_START; i < HWCAP_COUNT; i++)
65 {
66 if (strcmp (str, GLRO(dl_x86_hwcap_flags)[i]) == 0)
67 return i;
68 }
69 return -1;
70};
71
72/* We cannot provide a general printing function. */
73#define _dl_procinfo(type, word) -1
74
75#endif /* dl-hwcap.h */
76