| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* s390 version of processor capability information handling macros. |
| 2 | Copyright (C) 2006-2015 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2006. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef _DL_PROCINFO_H |
| 21 | #define _DL_PROCINFO_H 1 |
| 22 | #include <ldsodefs.h> |
| 23 | |
| 24 | #define _DL_HWCAP_COUNT 10 |
| 25 | |
| 26 | #define _DL_PLATFORMS_COUNT 5 |
| 27 | |
| 28 | /* The kernel provides up to 32 capability bits with elf_hwcap. */ |
| 29 | #define _DL_FIRST_PLATFORM 32 |
| 30 | /* Mask to filter out platforms. */ |
| 31 | #define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \ |
| 32 | << _DL_FIRST_PLATFORM) |
| 33 | |
| 34 | /* Hardware capability bit numbers are derived directly from the |
| 35 | facility indications as stored by the "store facility list" (STFL) |
| 36 | instruction. |
| 37 | highgprs is an alien in that list. It describes a *kernel* |
| 38 | capability. */ |
| 39 | |
| 40 | enum |
| 41 | { |
| 42 | HWCAP_S390_ESAN3 = 1 << 0, |
| 43 | HWCAP_S390_ZARCH = 1 << 1, |
| 44 | HWCAP_S390_STFLE = 1 << 2, |
| 45 | HWCAP_S390_MSA = 1 << 3, |
| 46 | HWCAP_S390_LDISP = 1 << 4, |
| 47 | HWCAP_S390_EIMM = 1 << 5, |
| 48 | HWCAP_S390_DFP = 1 << 6, |
| 49 | HWCAP_S390_HPAGE = 1 << 7, |
| 50 | HWCAP_S390_ETF3EH = 1 << 8, |
| 51 | HWCAP_S390_HIGH_GPRS = 1 << 9, |
| 52 | HWCAP_S390_TE = 1 << 10, |
| 53 | }; |
| 54 | |
| 55 | #define HWCAP_IMPORTANT (HWCAP_S390_ZARCH | HWCAP_S390_LDISP \ |
| 56 | | HWCAP_S390_EIMM | HWCAP_S390_DFP) |
| 57 | |
| 58 | /* We cannot provide a general printing function. */ |
| 59 | #define _dl_procinfo(type, word) -1 |
| 60 | |
| 61 | static inline const char * |
| 62 | __attribute__ ((unused)) |
| 63 | _dl_hwcap_string (int idx) |
| 64 | { |
| 65 | return GLRO(dl_s390_cap_flags)[idx]; |
| 66 | }; |
| 67 | |
| 68 | static inline const char * |
| 69 | __attribute__ ((unused)) |
| 70 | _dl_platform_string (int idx) |
| 71 | { |
| 72 | return GLRO(dl_s390_platforms)[idx - _DL_FIRST_PLATFORM]; |
| 73 | }; |
| 74 | |
| 75 | static inline int |
| 76 | __attribute__ ((unused, always_inline)) |
| 77 | _dl_string_hwcap (const char *str) |
| 78 | { |
| 79 | int i; |
| 80 | |
| 81 | for (i = 0; i < _DL_HWCAP_COUNT; i++) |
| 82 | { |
| 83 | if (strcmp (str, GLRO(dl_s390_cap_flags)[i]) == 0) |
| 84 | return i; |
| 85 | } |
| 86 | return -1; |
| 87 | }; |
| 88 | |
| 89 | static inline int |
| 90 | __attribute__ ((unused, always_inline)) |
| 91 | _dl_string_platform (const char *str) |
| 92 | { |
| 93 | int i; |
| 94 | |
| 95 | if (str != NULL) |
| 96 | for (i = 0; i < _DL_PLATFORMS_COUNT; ++i) |
| 97 | { |
| 98 | if (strcmp (str, GLRO(dl_s390_platforms)[i]) == 0) |
| 99 | return _DL_FIRST_PLATFORM + i; |
| 100 | } |
| 101 | return -1; |
| 102 | }; |
| 103 | |
| 104 | #endif /* dl-procinfo.h */ |