/* C API for x86 cpuid insn. Copyright (C) 2007-2020 Free Software Foundation, Inc. This file is part of GDB. This file is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef NAT_X86_CPUID_H #define NAT_X86_CPUID_H /* Always include the header for the cpu bit defines. */ #include "x86-gcc-cpuid.h" #if defined(__i386__) || defined(__x86_64__) /* Return cpuid data for requested cpuid level, as found in returned eax, ebx, ecx and edx registers. The function checks if cpuid is supported and returns 1 for valid cpuid information or 0 for unsupported cpuid level. Pointers may be non-null. */ static __inline int x86_cpuid (unsigned int __level, unsigned int *__eax, unsigned int *__ebx, unsigned int *__ecx, unsigned int *__edx) { unsigned int __scratch; if (!__eax) __eax = &__scratch; if (!__ebx) __ebx = &__scratch; if (!__ecx) __ecx = &__scratch; if (!__edx) __edx = &__scratch; return __get_cpuid (__level, __eax, __ebx, __ecx, __edx); } #else static __inline int x86_cpuid (unsigned int __level, unsigned int *__eax, unsigned int *__ebx, unsigned int *__ecx, unsigned int *__edx) { return 0; } #endif /* i386 && x86_64 */ #endif /* NAT_X86_CPUID_H */ |