src/system/libroot/os/arch/x86_64/system_info.cpp

   1 /*
   2  * Copyright 2014, Paweł Dziepak, pdziepak@quarnos.org.
   3  * Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de.
   4  * Distributed under the terms of the MIT License.
   5  */
   6
   7
   8 #include <OS.h>
   9 #include <syscalls.h>
  10
  11
  12 status_t
  13 get_cpuid(cpuid_info* info, uint32 eaxRegister, uint32 cpuNum)
  14 {
  15         __asm__("cpuid"
  16                 : "=a" (info->regs.eax), "=b" (info->regs.ebx), "=c" (info->regs.ecx),
  17                         "=d" (info->regs.edx)
  18                 : "a" (eaxRegister), "c" (0));
  19         return B_OK;
  20 }
  21