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Diffstat (limited to 'gdb/nat/i386-cpuid.h')
-rw-r--r-- | gdb/nat/i386-cpuid.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/gdb/nat/i386-cpuid.h b/gdb/nat/i386-cpuid.h new file mode 100644 index 0000000..9aea054 --- /dev/null +++ b/gdb/nat/i386-cpuid.h @@ -0,0 +1,63 @@ +/* C API for x86 cpuid insn. + Copyright (C) 2007-2014 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 I386_CPUID_COMMON_H +#define I386_CPUID_COMMON_H + +/* Always include the header for the cpu bit defines. */ +#include "i386-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 +i386_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 +i386_cpuid (unsigned int __level, + unsigned int *__eax, unsigned int *__ebx, + unsigned int *__ecx, unsigned int *__edx) +{ + return 0; +} + +#endif /* i386 && x86_64 */ + +#endif /* I386_CPUID_COMMON_H */ |