116 lines
3.4 KiB
NASM
116 lines
3.4 KiB
NASM
;
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; Command & Conquer Red Alert(tm)
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; Copyright 2025 Electronic Arts Inc.
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;
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; $Header: g:/library/wwlib32/system/rcs/detproc.asm 1.1 1994/04/18 09:13:53 jeff_wilson Exp $
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;***************************************************************************
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;** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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;***************************************************************************
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;* *
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;* Project Name : Westwood Library *
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;* *
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;* File Name : PROC.ASM *
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;* *
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;* Programmer : Joe L. Bostic *
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;* *
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;* Start Date : May 11, 1993 *
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;* *
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;* Last Update : May 11, 1993 [JLB] *
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;* *
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;* Converted to 32Bit -- JAW *
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;* *
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;*-------------------------------------------------------------------------*
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;* Functions: *
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;* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - *
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IDEAL
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P386
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MODEL USE32 FLAT
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GLOBAL Processor :NEAR
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PROC_80386 equ 0
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PROC_80486 equ 1
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PROC_80586 equ 2
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DATASEG
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cpu_id_586 dw 0
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CODESEG
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PROC Processor C near
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USES ebx
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LOCAL ptype:WORD
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pushfd
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; At least a 386 -- check for 486.
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mov [WORD PTR ptype],PROC_80386 ; 80386
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pushfd
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pop eax
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mov ebx,eax
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xor eax,40000h
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push eax
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popfd
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pushfd
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pop eax
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xor eax,ebx
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je short ??fini
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; At least a 486 -- check for 586(Pentium)
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mov [ptype],PROC_80486 ; 80486
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; Some machines have a problem with this fLAG
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; and thus make us think they are a 586 but they are
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; really a 486. A possible way around this is to
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; capture the Illegal instruction vector, then do
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; an instruction only available on the 586.
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; for now this is just commented out
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pushfd
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pop eax
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mov ebx,eax
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xor eax,200000h
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push eax
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popfd
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pushfd
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pop eax
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xor eax,ebx
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je short ??fini
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; At least a 586(Pentium) -- check for higher.
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mov [ptype],PROC_80586 ; 80486
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; mov eax,1
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; DW 0fA2h ; CPUID opcode.
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; shr ax,8
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; and ax,0fh
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; inc ax
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; inc ax
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; mov [cpu_id_586],ax
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; Final cleanup and exit.
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??fini:
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popfd
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sub eax,eax
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mov ax,[ptype]
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ret
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ENDP Processor
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END
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