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Add support for the new HWCAP2 values for ARMv8 added in the 3.15 kernel. Tested using QEMU which supports these extensions. ChangeLog: 2014-06-25 Will Newton <will.newton@linaro.org> * sysdeps/unix/sysv/linux/arm/dl-procinfo.c (_dl_arm_cap_flags): Add HWCAP2 values. * sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_DL_HWCAP_COUNT): Increase to 37. (_DL_HWCAP_LAST): New define. (_DL_HWCAP2_LAST): New define. (_dl_procinfo): Add support for printing AT_HWCAP2 entries. (_dl_string_hwcap): Use _dl_hwcap_string.
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/* Linux/ARM version of processor capability information handling macros.
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Philip Blundell <philb@gnu.org>, 2001.
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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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<http://www.gnu.org/licenses/>. */
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#ifndef _DL_PROCINFO_H
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#define _DL_PROCINFO_H 1
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#include <ldsodefs.h>
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#include <sysdep.h>
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#define _DL_HWCAP_COUNT 37
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/* Low 22 bits are allocated in HWCAP. */
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#define _DL_HWCAP_LAST 21
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/* Low 5 bits are allocated in HWCAP2. */
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#define _DL_HWCAP2_LAST 4
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/* The kernel provides platform data but it is not interesting. */
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#define _DL_HWCAP_PLATFORM 0
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static inline const char *
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__attribute__ ((unused))
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_dl_hwcap_string (int idx)
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{
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return GLRO(dl_arm_cap_flags)[idx];
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};
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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switch(type)
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{
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case AT_HWCAP:
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_dl_printf ("AT_HWCAP: ");
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for (int i = 0; i <= _DL_HWCAP_LAST; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (i));
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break;
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case AT_HWCAP2:
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{
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unsigned int offset = _DL_HWCAP_LAST + 1;
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_dl_printf ("AT_HWCAP2: ");
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for (int i = 0; i <= _DL_HWCAP2_LAST; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (offset + i));
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break;
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}
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default:
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/* This should not happen. */
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return -1;
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}
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_dl_printf ("\n");
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return 0;
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}
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#define HWCAP_IMPORTANT (HWCAP_ARM_VFP | HWCAP_ARM_NEON)
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static inline int
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__attribute__ ((unused))
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_dl_string_hwcap (const char *str)
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{
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for (int i = 0; i < _DL_HWCAP_COUNT; i++)
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{
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if (strcmp (str, _dl_hwcap_string (i)) == 0)
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return i;
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}
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return -1;
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};
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#define _dl_string_platform(str) (-1)
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#endif /* dl-procinfo.h */
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