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/* Linux/ARM version of processor capability information handling macros.
Copyright (C) 2001-2021 Free Software Foundation, Inc.
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
<https://www.gnu.org/licenses/>. */
#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H 1
#include <ldsodefs.h>
#include <sysdep.h>
#define _DL_HWCAP_COUNT 27
/* Low 22 bits are allocated in HWCAP. */
#define _DL_HWCAP_LAST 21
/* Low 5 bits are allocated in HWCAP2. */
#define _DL_HWCAP2_LAST 4
/* The kernel provides platform data but it is not interesting. */
#define _DL_HWCAP_PLATFORM 0
static inline const char *
__attribute__ ((unused))
_dl_hwcap_string (int idx)
{
return GLRO(dl_arm_cap_flags)[idx];
};
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
{
switch(type)
{
case AT_HWCAP:
_dl_printf ("AT_HWCAP: ");
for (int i = 0; i <= _DL_HWCAP_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (i));
break;
case AT_HWCAP2:
{
unsigned int offset = _DL_HWCAP_LAST + 1;
_dl_printf ("AT_HWCAP2: ");
for (int i = 0; i <= _DL_HWCAP2_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (offset + i));
break;
}
default:
/* Fallback to generic output mechanism. */
return -1;
}
_dl_printf ("\n");
return 0;
}
#define HWCAP_IMPORTANT (HWCAP_ARM_VFP | HWCAP_ARM_NEON)
static inline int
__attribute__ ((unused))
_dl_string_hwcap (const char *str)
{
for (int i = 0; i < _DL_HWCAP_COUNT; i++)
{
if (strcmp (str, _dl_hwcap_string (i)) == 0)
return i;
}
return -1;
};
#define _dl_string_platform(str) (-1)
#endif /* dl-procinfo.h */
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