gdb/nat/x86-cpuid.h - gdb

Functions defined

Macros defined

Source code

  1. /* C API for x86 cpuid insn.
  2.    Copyright (C) 2007-2015 Free Software Foundation, Inc.

  4.    This file is part of GDB.

  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.

  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.

  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/>.  */

  19. #ifndef X86_CPUID_COMMON_H
  20. ‌#define X86_CPUID_COMMON_H

  22. /* Always include the header for the cpu bit defines.  */
  23. #include "x86-gcc-cpuid.h"

  25. #if defined(__i386__) || defined(__x86_64__)

  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.  */

  32. static __inline int
  33. ‌x86_cpuid (unsigned int __level,
  34.             unsigned int *__eax, unsigned int *__ebx,
  35.             unsigned int *__ecx, unsigned int *__edx)
  36. {
  37.   unsigned int __scratch;

  39.   if (!__eax)
  40.     __eax = &__scratch;
  41.   if (!__ebx)
  42.     __ebx = &__scratch;
  43.   if (!__ecx)
  44.     __ecx = &__scratch;
  45.   if (!__edx)
  46.     __edx = &__scratch;

  48.   return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
  49. }

  51. #else

  53. static __inline int
  54. ‌x86_cpuid (unsigned int __level,
  55.             unsigned int *__eax, unsigned int *__ebx,
  56.             unsigned int *__ecx, unsigned int *__edx)
  57. {
  58.   return 0;
  59. }

  61. #endif /* i386 && x86_64 */

  63. #endif /* X86_CPUID_COMMON_H */