ref: a532e5aeb8498c6a4f4470363d59e5dc6cb6483f
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
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%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