| /* Linux/ARM version of processor capability information handling macros. |
| Copyright (C) 2001-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Philip Blundell <philb@gnu.org>, 2001. |
| |
| 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/>. */ |
| |
| #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: |
| /* This should not happen. */ |
| 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 */ |