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
|
/* Architecture-specific glibc-hwcaps subdirectories. s390x version.
Copyright (C) 2020-2022 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
<https://www.gnu.org/licenses/>. */
#include <dl-hwcaps.h>
#include <ldsodefs.h>
const char _dl_hwcaps_subdirs[] = "z16:z15:z14:z13";
enum { subdirs_count = 4 }; /* Number of components in _dl_hwcaps_subdirs. */
uint32_t
_dl_hwcaps_subdirs_active (void)
{
int active = 0;
/* Test in reverse preference order. */
/* z13. */
if (!(GLRO (dl_hwcap) & HWCAP_S390_VX))
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
++active;
/* z14. */
if (!((GLRO (dl_hwcap) & HWCAP_S390_VXD)
&& (GLRO (dl_hwcap) & HWCAP_S390_VXE)
&& (GLRO (dl_hwcap) & HWCAP_S390_GS)))
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
++active;
/* z15.
Note: We do not list HWCAP_S390_SORT and HWCAP_S390_DFLT here as,
according to the Principles of Operation, those may be replaced or removed
in future. */
if (!((GLRO (dl_hwcap) & HWCAP_S390_VXRS_EXT2)
&& (GLRO (dl_hwcap) & HWCAP_S390_VXRS_PDE)))
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
++active;
/* z16.
Note: We do not list HWCAP_S390_NNPA here as, according to the Principles of
Operation, those instructions may be replaced or removed in future. */
if (!(GLRO (dl_hwcap) & HWCAP_S390_VXRS_PDE2))
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
++active;
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
}
|
