ref: 012fced26756011824236b28497114d9fa02de93
dir: /src/x86/cpuid.asm/
; Copyright © 2018, VideoLAN and dav1d authors ; Copyright © 2018, Two Orioles, LLC ; All rights reserved. ; ; Redistribution and use in source and binary forms, with or without ; modification, are permitted provided that the following conditions are met: ; ; 1. Redistributions of source code must retain the above copyright notice, this ; list of conditions and the following disclaimer. ; ; 2. Redistributions in binary form must reproduce the above copyright notice, ; this list of conditions and the following disclaimer in the documentation ; and/or other materials provided with the distribution. ; ; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED ; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE ; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ; ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; ; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. %include "config.asm" %include "ext/x86/x86inc.asm" SECTION .text cglobal cpu_cpuid, 0, 5, 0, info, leaf mov r4, infomp mov eax, leafm xor ecx, ecx %if ARCH_X86_64 push rbx %endif cpuid mov [r4+4*0], eax mov [r4+4*1], ebx mov [r4+4*2], ecx mov [r4+4*3], edx %if ARCH_X86_64 pop rbx %endif RET cglobal cpu_xgetbv, 0, 0, 0, xcr movifnidn ecx, xcrm xgetbv %if ARCH_X86_64 shl rdx, 32 or rax, rdx %endif RET