mirror of git://sourceware.org/git/glibc.git
61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
/* Check for hardware capabilities after HWCAP parsing. S390 version.
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Copyright (C) 2021-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _DL_HWCAP_CHECK_H
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#define _DL_HWCAP_CHECK_H
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#include <gcc-macros.h>
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#include <ldsodefs.h>
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static inline void
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dl_hwcap_check (void)
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{
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/* Note: The s390x kernel won't introduce new HWCAP-Bits if there is
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no special handling needed in kernel itself. Thus we have have
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to check the facility-list retrieved with the stfle instruction.
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We already have a common storage of this list in cpu-features.c.
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This dl-hwcap-check.h file is included in
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sysdeps/unix/sysv/linux/dl-sysdep.c, where also dl-machine.h and
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cpu-features.c is included. Therefore we don't have a special
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include here. */
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#if defined GCCMACRO__ARCH__
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# if GCCMACRO__ARCH__ >= 15
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init_cpu_features_no_tunables (&GLRO(dl_s390_cpu_features));
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if (!(S390_IS_ARCH15 (GLRO(dl_s390_cpu_features).stfle_orig)))
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_dl_fatal_printf ("\
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Fatal glibc error: CPU lacks VXRS_EXT3/VXRS_PDE3/MIE4/Concurrent-functions \
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support (z17 or later required)\n");
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# elif GCCMACRO__ARCH__ >= 14
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if (!(GLRO(dl_hwcap) & HWCAP_S390_VXRS_PDE2))
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_dl_fatal_printf ("\
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Fatal glibc error: CPU lacks VXRS_PDE2 support (z16 or later required)\n");
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# elif GCCMACRO__ARCH__ >= 13
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if (!(GLRO(dl_hwcap) & HWCAP_S390_VXRS_EXT2))
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_dl_fatal_printf ("\
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Fatal glibc error: CPU lacks VXRS_EXT2 support (z15 or later required)\n");
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# elif GCCMACRO__ARCH__ >= 12
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if (!(GLRO(dl_hwcap) & HWCAP_S390_VXE))
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_dl_fatal_printf ("\
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Fatal glibc error: CPU lacks VXE support (z14 or later required)\n");
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# endif
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#endif /* GCCMACRO__ARCH__ */
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}
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#endif /* _DL_HWCAP_CHECK_H */
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