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3ab9b88e2a
This patch adds a new feature for powerpc. In order to get faster access to the HWCAP3/HWCAP4 masks, similar to HWCAP/HWCAP2 (i.e. for implementing __builtin_cpu_supports() in GCC) without the overhead of reading them from the auxiliary vector, we now reserve space for them in the TCB. This is an ABI change for GLIBC 2.39. Suggested-by: Peter Bergner <bergner@linux.ibm.com> Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/* Data for processor capability information. PowerPC version.
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Copyright (C) 2005-2024 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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/* This information must be kept in sync with the _DL_HWCAP_COUNT
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definition in procinfo.h.
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If anything should be added here check whether the size of each string
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is still ok with the given array size.
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All the #ifdefs in the definitions are quite irritating but
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necessary if we want to avoid duplicating the information. There
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are three different modes:
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- PROCINFO_DECL is defined. This means we are only interested in
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declarations.
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- PROCINFO_DECL is not defined:
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+ if SHARED is defined the file is included in an array
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initializer. The .element = { ... } syntax is needed.
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+ if SHARED is not defined a normal array initialization is
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needed.
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*/
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/* The total number of available bits (including those prior to
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_DL_HWCAP_FIRST). Some of these bits might not be used. */
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#define _DL_HWCAP_COUNT 128
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#ifndef PROCINFO_CLASS
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# define PROCINFO_CLASS
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#endif
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#if !IS_IN (ldconfig)
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# if !defined PROCINFO_DECL && defined SHARED
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._dl_powerpc_cpu_features
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# else
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PROCINFO_CLASS struct cpu_features _dl_powerpc_cpu_features
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# endif
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# ifndef PROCINFO_DECL
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= { }
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# endif
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# if !defined SHARED || defined PROCINFO_DECL
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;
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# else
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,
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# endif
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_powerpc_cap_flags
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#else
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PROCINFO_CLASS const char _dl_powerpc_cap_flags[_DL_HWCAP_COUNT][15]
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#endif
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#ifndef PROCINFO_DECL
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= {
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"ppcle", "true_le", "", "",
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"", "", "archpmu", "vsx",
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"arch_2_06", "power6x", "dfp", "pa6t",
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"arch_2_05", "ic_snoop", "smt", "booke",
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"cellbe", "power5+", "power5", "power4",
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"notb", "efpdouble", "efpsingle", "spe",
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"ucache", "4xxmac", "mmu", "fpu",
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"altivec", "ppc601", "ppc64", "ppc32",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "mma", "arch_3_1", "htm-no-suspend",
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"scv", "darn", "ieee128", "arch_3_00",
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"htm-nosc", "vcrypto", "tar", "isel",
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"ebb", "dscr", "htm", "arch_2_07",
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}
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#endif
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#if !defined SHARED || defined PROCINFO_DECL
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;
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#else
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,
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#endif
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#if !IS_IN (ldconfig)
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# if !defined PROCINFO_DECL && defined SHARED
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._dl_cache_line_size
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# else
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PROCINFO_CLASS int _dl_cache_line_size
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# endif
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# ifndef PROCINFO_DECL
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= 0
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# endif
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# if !defined SHARED || defined PROCINFO_DECL
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;
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# else
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,
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# endif
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#endif
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#undef PROCINFO_DECL
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#undef PROCINFO_CLASS
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