|
Packit |
6c4009 |
/* IFUNC resolver function for CPU specific functions.
|
|
Packit |
6c4009 |
32/64 bit S/390 version.
|
|
Packit |
6c4009 |
Copyright (C) 2015-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <unistd.h>
|
|
Packit |
6c4009 |
#include <dl-procinfo.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define S390_STFLE_BITS_Z10 34 /* General instructions extension */
|
|
Packit |
6c4009 |
#define S390_STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
|
|
Packit Service |
6d4f8a |
#define S390_STFLE_BITS_ARCH13_MIE3 61 /* Miscellaneous-Instruction-Extensions
|
|
Packit Service |
6d4f8a |
Facility 3, e.g. mvcrl. */
|
|
Packit Service |
6d4f8a |
|
|
Packit Service |
6d4f8a |
#define S390_IS_ARCH13_MIE3(STFLE_BITS) \
|
|
Packit Service |
6d4f8a |
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_ARCH13_MIE3))) != 0)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define S390_IS_Z196(STFLE_BITS) \
|
|
Packit |
6c4009 |
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_Z196))) != 0)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define S390_IS_Z10(STFLE_BITS) \
|
|
Packit |
6c4009 |
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_Z10))) != 0)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define S390_STORE_STFLE(STFLE_BITS) \
|
|
Packit |
6c4009 |
/* We want just 1 double word to be returned. */ \
|
|
Packit |
6c4009 |
register unsigned long reg0 __asm__("0") = 0; \
|
|
Packit |
6c4009 |
\
|
|
Packit |
6c4009 |
__asm__ __volatile__(".machine push" "\n\t" \
|
|
Packit |
6c4009 |
".machine \"z9-109\"" "\n\t" \
|
|
Packit |
6c4009 |
".machinemode \"zarch_nohighgprs\"\n\t" \
|
|
Packit |
6c4009 |
"stfle %0" "\n\t" \
|
|
Packit |
6c4009 |
".machine pop" "\n" \
|
|
Packit |
6c4009 |
: "=QS" (STFLE_BITS), "+d" (reg0) \
|
|
Packit |
6c4009 |
: : "cc");
|
|
Packit Service |
eafc22 |
#define s390_libc_ifunc_expr_stfle_init() \
|
|
Packit |
6c4009 |
unsigned long long stfle_bits = 0ULL; \
|
|
Packit Service |
c4c4e8 |
if (__glibc_likely ((hwcap & HWCAP_S390_STFLE) \
|
|
Packit Service |
c4c4e8 |
&& (hwcap & HWCAP_S390_ZARCH) \
|
|
Packit Service |
c4c4e8 |
&& (hwcap & HWCAP_S390_HIGH_GPRS))) \
|
|
Packit |
6c4009 |
{ \
|
|
Packit |
6c4009 |
S390_STORE_STFLE (stfle_bits); \
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define s390_libc_ifunc_expr_init()
|
|
Packit |
6c4009 |
#define s390_libc_ifunc_expr(TYPE_FUNC, FUNC, EXPR) \
|
|
Packit |
6c4009 |
__ifunc (TYPE_FUNC, FUNC, EXPR, unsigned long int hwcap, \
|
|
Packit |
6c4009 |
s390_libc_ifunc_expr_init);
|