2012-07-12 11:04:55 +00:00
|
|
|
/* IFUNC resolver function for CPU specific functions.
|
2015-08-26 08:26:18 +00:00
|
|
|
32/64 bit S/390 version.
|
2017-01-01 00:14:16 +00:00
|
|
|
Copyright (C) 2015-2017 Free Software Foundation, Inc.
|
2012-07-12 11:04:55 +00:00
|
|
|
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>
|
|
|
|
|
|
2015-08-26 08:26:18 +00:00
|
|
|
#define S390_STFLE_BITS_Z10 34 /* General instructions extension */
|
|
|
|
|
#define S390_STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
|
2012-07-12 11:04:55 +00:00
|
|
|
|
2015-08-26 08:26:18 +00:00
|
|
|
#define S390_IS_Z196(STFLE_BITS) \
|
|
|
|
|
((STFLE_BITS & (1ULL << (63 - S390_STFLE_BITS_Z196))) != 0)
|
2012-07-12 11:04:55 +00:00
|
|
|
|
2015-08-26 08:26:18 +00:00
|
|
|
#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. */ \
|
2015-11-20 07:56:40 +00:00
|
|
|
register unsigned long reg0 __asm__("0") = 0; \
|
2015-08-26 08:26:18 +00:00
|
|
|
\
|
2015-11-20 07:56:40 +00:00
|
|
|
__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");
|
2016-10-07 07:56:47 +00:00
|
|
|
#define s390_libc_ifunc_init() \
|
|
|
|
|
unsigned long long stfle_bits = 0ULL; \
|
|
|
|
|
if (__glibc_likely((dl_hwcap & HWCAP_S390_STFLE) \
|
|
|
|
|
&& (dl_hwcap & HWCAP_S390_ZARCH) \
|
|
|
|
|
&& (dl_hwcap & HWCAP_S390_HIGH_GPRS))) \
|
|
|
|
|
{ \
|
|
|
|
|
S390_STORE_STFLE (stfle_bits); \
|
|
|
|
|
}
|
2015-08-26 08:26:18 +00:00
|
|
|
|
2016-10-07 07:56:47 +00:00
|
|
|
#define s390_libc_ifunc(TYPE_FUNC, RESOLVERFUNC, FUNC) \
|
2012-09-03 12:06:27 +00:00
|
|
|
/* Make the declarations of the optimized functions hidden in order
|
|
|
|
|
to prevent GOT slots being generated for them. */ \
|
2016-10-07 07:56:47 +00:00
|
|
|
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_z196 attribute_hidden; \
|
|
|
|
|
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_z10 attribute_hidden; \
|
|
|
|
|
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_default attribute_hidden; \
|
|
|
|
|
__ifunc (TYPE_FUNC, FUNC, \
|
|
|
|
|
__glibc_likely (S390_IS_Z196 (stfle_bits)) \
|
|
|
|
|
? RESOLVERFUNC##_z196 \
|
|
|
|
|
: __glibc_likely (S390_IS_Z10 (stfle_bits)) \
|
|
|
|
|
? RESOLVERFUNC##_z10 \
|
|
|
|
|
: RESOLVERFUNC##_default, \
|
|
|
|
|
unsigned long int dl_hwcap, s390_libc_ifunc_init);
|
2015-08-26 08:26:19 +00:00
|
|
|
|
|
|
|
|
#define s390_vx_libc_ifunc(FUNC) \
|
2016-10-07 07:56:47 +00:00
|
|
|
s390_vx_libc_ifunc2_redirected(FUNC, FUNC, FUNC)
|
2015-08-26 08:26:19 +00:00
|
|
|
|
2016-10-07 07:56:47 +00:00
|
|
|
#define s390_vx_libc_ifunc_redirected(TYPE_FUNC, FUNC) \
|
|
|
|
|
s390_vx_libc_ifunc2_redirected(TYPE_FUNC, FUNC, FUNC)
|
|
|
|
|
|
|
|
|
|
#define s390_vx_libc_ifunc2(RESOLVERFUNC, FUNC) \
|
|
|
|
|
s390_vx_libc_ifunc2_redirected(FUNC, RESOLVERFUNC, FUNC)
|
|
|
|
|
|
|
|
|
|
#define s390_vx_libc_ifunc_init()
|
|
|
|
|
#define s390_vx_libc_ifunc2_redirected(TYPE_FUNC, RESOLVERFUNC, FUNC) \
|
2015-08-26 08:26:19 +00:00
|
|
|
/* Make the declarations of the optimized functions hidden in order
|
|
|
|
|
to prevent GOT slots being generated for them. */ \
|
2016-10-07 07:56:47 +00:00
|
|
|
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_vx attribute_hidden; \
|
|
|
|
|
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_c attribute_hidden; \
|
|
|
|
|
__ifunc (TYPE_FUNC, FUNC, \
|
|
|
|
|
(dl_hwcap & HWCAP_S390_VX) \
|
|
|
|
|
? RESOLVERFUNC##_vx \
|
|
|
|
|
: RESOLVERFUNC##_c, \
|
|
|
|
|
unsigned long int dl_hwcap, s390_vx_libc_ifunc_init);
|
2017-04-21 13:30:00 +00:00
|
|
|
|
|
|
|
|
#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);
|
