projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d157a3d | 1 | /* C API for x86 cpuid insn. |
| ecd75fc8 | 2 | Copyright (C) 2007-2014 Free Software Foundation, Inc. |
| 4d157a3d MF |
3 | |
| 4 | This file is part of GDB. | |
| 5 | ||
| 6 | This file is free software; you can redistribute it and/or modify it | |
| 7 | under the terms of the GNU General Public License as published by the | |
| 8 | Free Software Foundation; either version 3, or (at your option) any | |
| 9 | later version. | |
| 10 | ||
| 11 | This program 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 | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #ifndef I386_CPUID_COMMON_H | |
| 20 | #define I386_CPUID_COMMON_H | |
| 21 | ||
| 22 | /* Always include the header for the cpu bit defines. */ | |
| 23 | #include "i386-gcc-cpuid.h" | |
| 24 | ||
| 25 | #if defined(__i386__) || defined(__x86_64__) | |
| 26 | ||
| 27 | /* Return cpuid data for requested cpuid level, as found in returned | |
| 28 | eax, ebx, ecx and edx registers. The function checks if cpuid is | |
| 29 | supported and returns 1 for valid cpuid information or 0 for | |
| 30 | unsupported cpuid level. Pointers may be non-null. */ | |
| 31 | ||
| 32 | static __inline int | |
| 33 | i386_cpuid (unsigned int __level, | |
| 34 | unsigned int *__eax, unsigned int *__ebx, | |
| 35 | unsigned int *__ecx, unsigned int *__edx) | |
| 36 | { | |
| 37 | unsigned int __scratch; | |
| 38 | ||
| 39 | if (!__eax) | |
| 40 | __eax = &__scratch; | |
| 41 | if (!__ebx) | |
| 42 | __ebx = &__scratch; | |
| 43 | if (!__ecx) | |
| 44 | __ecx = &__scratch; | |
| 45 | if (!__edx) | |
| 46 | __edx = &__scratch; | |
| 47 | ||
| 48 | return __get_cpuid (__level, __eax, __ebx, __ecx, __edx); | |
| 49 | } | |
| 50 | ||
| 51 | #else | |
| 52 | ||
| 53 | static __inline int | |
| 54 | i386_cpuid (unsigned int __level, | |
| 55 | unsigned int *__eax, unsigned int *__ebx, | |
| 56 | unsigned int *__ecx, unsigned int *__edx) | |
| 57 | { | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | #endif /* i386 && x86_64 */ | |
| 62 | ||
| 63 | #endif /* I386_CPUID_COMMON_H */ |