# # Copyright 2003 Free Software Foundation, Inc. # # This file is part of GNU Radio # # GNU Radio 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. # # GNU Radio 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 GNU Radio; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. # # # execute CPUID instruction, return EAX, EBX, ECX and EDX values in result # # void cpuid_x86 (unsigned int op, unsigned int result[4]); # #include "assembly.h" .file "cpuid_x86.S" .version "01.01" .text .globl GLOB_SYMB(cpuid_x86) DEF_FUNC_HEAD(cpuid_x86) GLOB_SYMB(cpuid_x86): pushl %ebp movl %esp, %ebp pushl %ebx # must save in PIC mode, holds GOT pointer pushl %esi movl 8(%ebp), %eax # op movl 12(%ebp), %esi # result cpuid movl %eax, 0(%esi) movl %ebx, 4(%esi) movl %ecx, 8(%esi) movl %edx, 12(%esi) popl %esi popl %ebx popl %ebp ret FUNC_TAIL(cpuid_x86) .ident "Hand coded cpuid assembly" #if defined(__linux__) && defined(__ELF__) .section .note.GNU-stack,"",%progbits #endif