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
|
/* IFUNC resolver function for CPU specific functions.
32/64 bit S/390 version.
Copyright (C) 2015-2019 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/>. */
#include <unistd.h>
#include <dl-procinfo.h>
#define S390_STFLE_BITS_Z10 34 /* General instructions extension */
#define S390_STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
#define S390_STFLE_BITS_ARCH13_MIE3 61 /* Miscellaneous-Instruction-Extensions
Facility 3, e.g. mvcrl. */
#define S390_IS_ARCH13_MIE3(STFLE_BITS) \
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_ARCH13_MIE3))) != 0)
#define S390_IS_Z196(STFLE_BITS) \
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_Z196))) != 0)
#define S390_IS_Z10(STFLE_BITS) \
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_Z10))) != 0)
#define S390_STORE_STFLE(STFLE_BITS) \
/* We want just 1 double word to be returned. */ \
register unsigned long reg0 __asm__("0") = 0; \
\
__asm__ __volatile__(".machine push" "\n\t" \
".machine \"z9-109\"" "\n\t" \
".machinemode \"zarch_nohighgprs\"\n\t" \
"stfle %0" "\n\t" \
".machine pop" "\n" \
: "=QS" (STFLE_BITS), "+d" (reg0) \
: : "cc");
#define s390_libc_ifunc_expr_stfle_init() \
unsigned long long stfle_bits = 0ULL; \
if (__glibc_likely ((hwcap & HWCAP_S390_STFLE) \
&& (hwcap & HWCAP_S390_ZARCH) \
&& (hwcap & HWCAP_S390_HIGH_GPRS))) \
{ \
S390_STORE_STFLE (stfle_bits); \
}
#define s390_libc_ifunc_expr_init()
#define s390_libc_ifunc_expr(TYPE_FUNC, FUNC, EXPR) \
__ifunc (TYPE_FUNC, FUNC, EXPR, unsigned long int hwcap, \
s390_libc_ifunc_expr_init);
|
