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os-k/boot/loader/cpu/cpu.inc

75 lines
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PHP

;=----------------------------------------------------------------------------=;
; GNU GPL OS/K ;
; ;
; Desc: Basic longmode CPU functions ;
; (x86_64 architecture only) ;
; ;
; ;
; Copyright © 2018-2019 The OS/K Team ;
; ;
; This file is part of OS/K. ;
; ;
; OS/K 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 of the License, or ;
; (at your option) any later version. ;
; ;
; OS/K 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 OS/K. If not, see <https://www.gnu.org/licenses/>. ;
;=----------------------------------------------------------------------------=;
[global temporize]
[global bitemporize]
[global tritemporize]
[BITS 64]
temporize:
push rcx
mov rcx, 2000
.looping:
nop
nop
nop
loop .looping
pop rcx
ret
bitemporize:
push rcx
mov rcx, 2000
.looping:
call temporize
loop .looping
pop rcx
ret
tritemporize:
push rcx
mov rcx, 20
.looping:
push rcx
call bitemporize
pop rcx
loop .looping
pop rcx
ret
; ---------------------------------------------------------------------------- ;
; Returns the CPU Vendor String.pointer in eax ;
; ---------------------------------------------------------------------------- ;
cpu_vendor:
;; Calling the competent authorities
mov eax, 0
cpuid
ret
.string db " "