derek.holloway
7502bf64a4
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86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/* C API for x86 cpuid insn.
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Copyright (C) 2007-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_NAT_X86_CPUID_H
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#define GDB_NAT_X86_CPUID_H
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/* Always include the header for the cpu bit defines. */
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#include "x86-gcc-cpuid.h"
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#ifndef __cplusplus
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/* This header file is also used in C code for some test-cases, so define
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nullptr in C terms to avoid a compilation error. */
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#define nullptr ((void *) 0)
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#endif
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/* Return cpuid data for requested cpuid level, as found in returned
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eax, ebx, ecx and edx registers. The function checks if cpuid is
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supported and returns 1 for valid cpuid information or 0 for
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unsupported cpuid level. Pointers may be non-null. */
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static __inline int
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x86_cpuid (unsigned int __level,
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unsigned int *__eax, unsigned int *__ebx,
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unsigned int *__ecx, unsigned int *__edx)
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{
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unsigned int __scratch;
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if (!__eax)
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__eax = &__scratch;
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if (!__ebx)
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__ebx = &__scratch;
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if (!__ecx)
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__ecx = &__scratch;
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if (!__edx)
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__edx = &__scratch;
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return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
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}
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/* Return cpuid data for requested cpuid level and sub-level, as found
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in returned eax, ebx, ecx and edx registers. The function checks
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if cpuid is supported and returns 1 for valid cpuid information or
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0 for unsupported cpuid level. Pointers may be non-null. */
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static __inline int
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x86_cpuid_count (unsigned int __level, unsigned int __sublevel,
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unsigned int *__eax, unsigned int *__ebx,
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unsigned int *__ecx, unsigned int *__edx)
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{
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unsigned int __scratch;
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if (__eax == nullptr)
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__eax = &__scratch;
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if (__ebx == nullptr)
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__ebx = &__scratch;
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if (__ecx == nullptr)
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__ecx = &__scratch;
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if (__edx == nullptr)
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__edx = &__scratch;
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return __get_cpuid_count (__level, __sublevel, __eax, __ebx, __ecx, __edx);
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}
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#ifndef __cplusplus
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/* Avoid leaking this local definition beyond the scope of this header
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file. */
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#undef nullptr
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#endif
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#endif /* GDB_NAT_X86_CPUID_H */
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