fix: suppression de la gestion de la disquette, ajout du déboguage avec Bochs, correction initialisation du FPU au démarrage, changement de modèle 3D
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## Copies d'écran de COS2000
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![screen](https://github.com/dahut87/cos2000v2/raw/develop/Graphisme/screenshots/28-09-2018.png)
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![screen](https://github.com/dahut87/cos2000v2/raw/develop/Graphisme/screenshots/29-11-2018.png)
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![screen](https://github.com/dahut87/cos2000v2/raw/develop/Graphisme/screenshots/ansi.png)
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256
boot/boot12.asm
256
boot/boot12.asm
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@ -1,256 +0,0 @@
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;/*******************************************************************************/
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;/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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;/* */
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[BITS 16]
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[ORG 0x7C00]
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section .text
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start:
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jmp near Boot
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Disk_ID db "COS2000A" ;Fabricant + n° de série Formatage
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Sectors_Size dw 512 ;Nombre d'octets/secteur
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Sectors_Per_Cluster db 1 ;Nombre de secteurs/cluster
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Reserved_Sectors dw 1 ;Nombre de secteurs réservé
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Fats_Number db 2 ;Nombre de copies de la FAT
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Fits_Number dw 224 ;Taille du répertoire racine
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Sectors_Per_Disk dw 2880 ;Nombre secteurs du volume si < 32 Mo
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Media_Descriptor db 0xF0 ;Descripteur de média
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Sectors_Per_Fat dw 9 ;Nombre secteurs/FAT
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Sectors_Per_Track dw 18 ;Nombre secteurs/piste
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Heads_Number dw 2 ;Nombre de tete de lecture/écriture
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Sectors_Hidden dd 0 ;Nombre de secteurs cachés
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Sectors_Per_Disk2 dd 0 ;Nombre secteurs du volume si > 32 Mo
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Boot_Drive db 0 ;Lecteur de démarrage
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Reserved db 0 ;NA (pour NT seulement)
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Extended_Boot_ID db 0x29 ;Signature Boot étendu 29h
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Serial_Number dd 0x01020304 ;N° de série
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Disk_Name db "COS2000 " ;Nom de volume
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Fat_Type db "FAT12 " ;Type de système de fichiers
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Boot_Message db "Cos2000",0
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Entre_Message db "Fichier",0
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Loading_Message db "Charger",0
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System_File db "Al",0,"o",0,"a",0,"d",0,"e",0,0x0F,0,0x38,"r",0,".",0,"s",0,"y",0,"s",0,0,0,0,0,0xFF,0xFF,0xFF,0xFF
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Is_Ok db " [ OK ]",0x0A,0x0D,0
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Is_Failed db " [ERREUR]",0x0A,0x0D,0
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The_Dot db '.',0
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Boot_Error:
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mov si,Is_Failed
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call ShowString
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xor ax,ax
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int 0x16
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int 0x19
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Boot_Ok:
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mov si,Is_Ok
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call ShowString
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ret
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Boot:
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push cs
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push cs
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pop es
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pop ds
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mov [Boot_Drive],dl
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cli
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mov ax,0x9000
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mov ss,ax
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mov sp,0xFFFF
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sti
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mov si,Boot_Message
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call ShowString
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; Initialisation du lecteur de disquette
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xor ax,ax
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int 0x13
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jc Boot_Error
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; Calcul de la position de la FAT12
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mov cx,[Reserved_Sectors]
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add cx,[Sectors_Hidden]
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adc cx,[Sectors_Hidden+2]
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mov bx,[Sectors_Per_Fat]
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mov di,Fat_Buffer
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push bx
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push cx
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; Lecture de la FAT en mémoire
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readfat:
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call ReadSector
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jc Boot_Error
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inc cx
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add di,[Sectors_Size]
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dec bx
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jnz readfat
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pop cx
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pop bx
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xor ax,ax
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mov al,[Fats_Number]
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mul bx
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add cx,ax
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mov ax,32
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mul word [Fits_Number]
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div word [Sectors_Size]
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add ax,cx
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sub ax,2
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mov word [Serial_Number],ax
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xor dx,dx
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call Boot_Ok
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mov si,Loading_Message
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call ShowString
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; Recherche du système dans les entrèes de répertoire
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Find_System:
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mov di,Buffer
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call ReadSector
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jc Near Boot_Error
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xor bx,bx
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Next_Root_Entrie:
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cmp byte [di],0
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je near Boot_Error
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push di
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push cx
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mov si,System_File
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mov cx,32
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rep cmpsb
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pop cx
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pop di
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je System_Found
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add di,32
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add bx,32
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inc dx
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cmp dx,[Fits_Number]
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ja near Boot_Error
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cmp bx,[Sectors_Size]
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jb Next_Root_Entrie
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inc cx
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jmp Find_System
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System_Found:
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; Système trouvé
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call Boot_Ok
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mov si,Entre_Message
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call ShowString
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mov cx,[di+26+32]
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mov ax,0x0080
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mov es,ax
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push es
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mov di,0x0
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push di
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mov si,The_Dot
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Resume_Loading:
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; Chargement des secteur en mémoire à l'adresse 0080:0000
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cmp cx,0x0FF0
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jae Finish_Loading
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push cx
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add cx,word [Serial_Number]
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call ReadSector
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pop cx
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jc near Boot_Error
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call ShowString
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add di,[Sectors_Size]
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call NextFatGroup
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jc near Boot_Error
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jmp Resume_Loading
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Finish_Loading:
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call Boot_Ok
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; Exécution du chargeur ELF
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retf
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;====================READSECTOR=======================
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;Lit le secteur logique LBA CX et le met en es:di
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;-> CX (limité à 65536 secteurs, soit 32 Mo avec secteur 512 octets)
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;<- Flag Carry si erreur
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;=====================================================
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ReadSector:
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pusha
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mov ax,cx
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xor dx,dx
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div word [Sectors_Per_Track]
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inc dl
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mov bl,dl
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xor dx,dx
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div word [Heads_Number]
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mov dh, [Boot_Drive]
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xchg dl,dh
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mov cx,ax
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xchg cl,ch
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shl cl,6
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or cl, bl
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mov bx,di
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mov si, 4
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mov al, 1
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Read_Again:
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mov ah, 2
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int 0x13
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jnc Read_Done
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dec si
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jnz Read_Again
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Read_Done:
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popa
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ret
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;===================NEXTFATGROUP======================
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;Renvoie en CX le groupe qui succède dans la FAT le groupe CX
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;-> CX
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;<-
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;=====================================================
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NextFatGroup:
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push bx
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push dx
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push di
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mov ax,cx
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mov bx,ax
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and bx,0000000000000001b
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shr ax,1
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mov cx,3
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mul cx
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mov di,Fat_Buffer
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add di,ax
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cmp bx,0
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jnz Even_Group
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Odd_Group:
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mov dx,[di]
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and dx,0x0FFF
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mov cx,dx
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jmp Next_Group_Found
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Even_Group:
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mov dx,[di+1]
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and dx,0xFFF0
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shr dx,4
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mov cx,dx
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Next_Group_Found:
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pop di
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pop dx
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pop bx
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ret
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;======================SHOWSTR========================
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;Affiche la chaine de caractère pointé par ds:si à l'écran
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;-> DS, SI
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;<- Flag Carry si erreur
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;=====================================================
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ShowString:
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pusha
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Next_Char:
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lodsb
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or al,al
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jz End_Show
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mov ah,0x0E
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mov bx,0x07
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int 0x10
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jmp Next_Char
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End_Show:
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popa
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ret
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times 510-($-$$) db ' '
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dw 0xAA55
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Buffer equ $
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Fat_Buffer equ $+512
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section .bss
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;Buffer resb 512
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;Fat_Buffer resb 10000
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13
boot/echs.h
13
boot/echs.h
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;/*******************************************************************************/
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;/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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;/* */
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struc echs
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Sizes resb 1
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Reserve resb 1
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NumSectors resw 1
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Adressoff resw 1
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Adressseg resw 1
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SectorLow resw 1
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SectorHigh resw 1
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Dummy resq 1
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endstuc
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119
boot/elf.h
119
boot/elf.h
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;/*******************************************************************************/
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;/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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;/* */
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struc ELFheader
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.Magic resb 1;"0x7F"
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.MagicStr resb 3;"ELF"
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.Computertype resb 1;1
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.Endianness resb 1;1
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.Original resb 1;1
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.OS resb 1;0
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.ABI resb 1;0
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.Dummy resb 7;0
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.Type resw 1;2
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.Target resw 1;3
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.Version resd 1;1
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.Entrypoint resd 1
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.Offsetprogram resd 1
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.Offsetsection resd 1
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.Flags resd 1
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.SizeELFheader resw 1
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.Sizeprogram resw 1
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.Nbprogram resw 1
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.Sizesection resw 1
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.Nbsection resw 1
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.Index resw 1
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.end equ $
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endstruc
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struc Program
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.Type resd 1
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.Offset resd 1
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.Vadress resd 1
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.PAdress resd 1
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.Size resd 1
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.Memsize resd 1
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.Flags resd 1
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.Align resd 1
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.end equ $
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endstruc
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struc Sections
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.Name resd 1
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.Type resd 1
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.Flags resd 1
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.Vadress resd 1
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.Offset resd 1
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.Size resd 1
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.Link resd 1
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.Info resd 1
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.Align resd 1
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.Entrysize resd 1
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.end equ $
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endstruc
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;type
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PT_NULL equ 0
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PT_LOAD equ 1
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PT_DYNAMIC equ 2
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PT_INTERP equ 3
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PT_NOTE equ 4
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PT_SHLIB equ 5
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PT_PHDR equ 6
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PT_TLS equ 7
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PT_LOOS equ 0x60000000
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PT_HIOS equ 0x6fffffff
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PT_LOPROC equ 0x70000000
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PT_HIPROC equ 0x7fffffff
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;flags
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PF_WRITE equ 0x1
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PF_ALLOC equ 0x2
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PF_X equ 0x1 ;Execute
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PF_W equ 0x2 ;Write
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PF_R equ 0x4 ;Read
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PF_MASKOS equ 0x0ff00000 ;Unspecified
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PF_MASKPROC equ 0xf0000000 ;Unspecified
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;type
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ST_EXIT equ 1
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ST_NULL equ 0
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ST_PROGBITS equ 1
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ST_SYMTAB equ 2
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ST_STRTAB equ 3
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ST_RELA equ 4
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ST_HASH equ 5
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ST_DYNAMIC equ 6
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ST_NOTE equ 7
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ST_NOBITS equ 8
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ST_REL equ 9
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ST_SHLIB equ 10
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ST_DYNSYM equ 11
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ST_INIT_ARRAY equ 14
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ST_FINI_ARRAY equ 15
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ST_PREINIT_ARRAY equ 16
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ST_GROUP equ 17
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ST_SYMTAB_SHNDX equ 18
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ST_LOOS equ 0x60000000
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ST_HIOS equ 0x6fffffff
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ST_LOPROC equ 0x70000000
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ST_HIPROC equ 0x7fffffff
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ST_LOUSER equ 0x80000000
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ST_HIUSER equ 0xffffffff
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;flags
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SF_WRITE equ 0x1
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SF_ALLOC equ 0x2
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SF_EXECINSTR equ 0x4
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SF_MERGE equ 0x10
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SF_STRINGS equ 0x20
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SF_INFO_LINK equ 0x40
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SF_LINK_ORDER equ 0x80
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SF_OS_NONCONFORMING equ 0x100
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SF_GROUP equ 0x200
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SF_TLS equ 0x400
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SF_COMPRESSED equ 0x800
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SF_MASKOS equ 0x0ff00000
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SF_MASKPROC equ 0xf0000000
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858
boot/loader.asm
858
boot/loader.asm
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;/*******************************************************************************/
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;/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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;/* */
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[BITS 16]
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[ORG 0x0]
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SECTION .text
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push cs
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push cs
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pop ds
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pop es
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mov si,msg0
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call showstr
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;Projection de la FAT12 en mémoire
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mov si,msg1
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call showstr
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call initfat
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call ok
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;Recherche du système
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mov si,msg2
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call showstr
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mov si,System_File
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call search
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call ok
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;Activation du BUS A20
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mov si,msg3
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call showstr
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call EnableA20
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call ok
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;Chargement d'une GDT pour le mode FLAT REAL
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mov si,msg4
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call showstr
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mov eax,cs
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shl eax,4
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mov [GDT.Entry1+2],ax
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mov [GDT.Entry2+2],ax
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shr eax,16
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mov [GDT.Entry1+4],al
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mov [GDT.Entry2+4],al
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mov eax,cs
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shl eax,4
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add eax,gdt0
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mov [GDTR.Address],eax
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lgdt [GDTR]
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call ok
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;Passage en mode FLAT REAL
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mov si,msg5
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call showstr
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cli
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mov eax,cr0
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or al,1
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mov cr0,eax
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jmp short $+2
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mov bx,SYS_DATA_SEL
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mov fs,bx
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mov ds,bx
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mov es,bx
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mov gs,bx
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and al,0FEh
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mov cr0,eax
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jmp short $+2
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mov bx,cs
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mov fs,bx
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mov ds,bx
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mov es,bx
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mov gs,bx
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sti
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call ok
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;Chargement du noyau en 0x30000
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mov si,msg6
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call showstr
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mov ebx,0x300000
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call load
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call ok
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;Chargement du fichier PE
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mov si,msg7
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call showstr
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call initpe
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call ok
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;suite:
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;mov cx,suite
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;call debug
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mov si,msg8
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call showstr
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cli
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;Passage en mode protégé
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mov al,0x80
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out 0x70,al
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mov eax,cr0
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or al,1
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mov cr0,eax
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;Exécution du code 32 bits
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jmp SYS_CODE_SEL:GoPMode32
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Boot_Error:
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mov si,error
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call showstr
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xor ax,ax
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int 16h
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jmp 0xFFFF:0x0
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ok:
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push si
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push cx
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mov cl,67
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call eol
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mov si,okay
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call showstr
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pop cx
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pop si
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ret
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;======================INITPE========================
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||||
;Initialise le PE de l'adresse EBX
|
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;->
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;<- Flag Carry si erreur
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;=====================================================
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initpe:
|
||||
pusha
|
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push es
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xor ax,ax
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||||
mov es,ax
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mov [begin],ebx
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cmp word [es:ebx+ELFheader.Magic],0x457F ; bien l'entete .elf ?
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jne near errorelf
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cmp word [es:ebx+ELFheader.Magic+2],"LF" ; bien l'entete .elf ?
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jne near errorelf
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cmp byte [es:ebx+ELFheader.Computertype],0x1 ; type ok ?
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jne near errorelf
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cmp byte [es:ebx+ELFheader.Endianness],0x1 ; type ok ?
|
||||
jne near errorelf
|
||||
cmp byte [es:ebx+ELFheader.Original],0x1 ; type ok ?
|
||||
jne near errorelf
|
||||
cmp byte [es:ebx+ELFheader.OS],0x0 ; type ok ?
|
||||
jne near errorelf
|
||||
cmp byte [es:ebx+ELFheader.ABI],0x0 ; type ok ?
|
||||
jne near errorelf
|
||||
cmp byte [es:ebx+ELFheader.Dummy],0x0 ; type ok ?
|
||||
jne near errorelf
|
||||
mov si,info1
|
||||
call showstr
|
||||
mov esi,[es:ebx+ELFheader.Entrypoint]
|
||||
mov [entriepoint],esi
|
||||
mov esi,[es:ebx+ELFheader.Offsetprogram]
|
||||
add esi,ebx
|
||||
mov [offsetheader],esi
|
||||
mov esi,[es:ebx+ELFheader.Offsetsection]
|
||||
add esi,ebx
|
||||
mov [offsetsection],esi
|
||||
mov cx,[es:ebx+ELFheader.Nbprogram]
|
||||
mov [cs:nbprogram],cx
|
||||
mov cx,[es:ebx+ELFheader.Nbsection]
|
||||
mov [cs:nbsection],cx
|
||||
xor eax,eax
|
||||
mov ax,[es:ebx+ELFheader.Index]
|
||||
xor edx,edx
|
||||
mov dx,[es:ebx+ELFheader.Sizesection]
|
||||
mul edx
|
||||
add eax,esi
|
||||
mov eax,[es:eax+Sections.Offset]
|
||||
add eax,ebx
|
||||
mov [cs:symbol],eax
|
||||
xor eax,eax
|
||||
add ax,[es:ebx+ELFheader.Sizesection]
|
||||
add esi,eax
|
||||
sections:
|
||||
mov edi,esi
|
||||
cmp dword [es:edi+Sections.Type],0x00
|
||||
jz nothing
|
||||
mov esi,info2
|
||||
call showstr
|
||||
push ds
|
||||
push es
|
||||
pop ds
|
||||
mov esi,[es:edi+Sections.Name]
|
||||
add esi,[cs:symbol]
|
||||
call showstr
|
||||
pop ds
|
||||
mov esi,info3
|
||||
call showstr
|
||||
mov edx,[es:edi+Sections.Offset]
|
||||
push cx
|
||||
mov cx,32
|
||||
call ShowHex
|
||||
pop cx
|
||||
mov esi,info4
|
||||
call showstr
|
||||
mov edx,[es:edi+Sections.Size]
|
||||
push cx
|
||||
mov cx,32
|
||||
call ShowHex
|
||||
pop cx
|
||||
mov esi,info5
|
||||
call showstr
|
||||
mov edx,[es:edi+Sections.Vadress]
|
||||
push cx
|
||||
mov cx,32
|
||||
call ShowHex
|
||||
pop cx
|
||||
and dword [es:edi+Sections.Flags],SF_ALLOC
|
||||
jne itsok
|
||||
mov esi,info6
|
||||
call showstr
|
||||
jmp itsok2
|
||||
itsok:
|
||||
mov esi,info10
|
||||
call showstr
|
||||
call copy2mem
|
||||
cmp dword [es:edi+Sections.Type],ST_NOBITS
|
||||
jne itsok2
|
||||
mov esi,info9
|
||||
call showstr
|
||||
mov esi,info10
|
||||
call showstr
|
||||
call zero2mem
|
||||
itsok2:
|
||||
push cx
|
||||
xor cx,cx
|
||||
mov edx,[es:edi+Sections.Align]
|
||||
mov esi,info8
|
||||
call showstr
|
||||
nextpower:
|
||||
cmp edx,0
|
||||
je powerok
|
||||
cmp edx,1
|
||||
je powerok
|
||||
cmp cx,32
|
||||
je powerok
|
||||
inc cx
|
||||
shr edx,1
|
||||
jnc nextpower
|
||||
powerok:
|
||||
mov edx,ecx
|
||||
mov cx,4
|
||||
call ShowHex
|
||||
pop cx
|
||||
call showrtn
|
||||
mov esi,edi
|
||||
nothing:
|
||||
add esi,eax
|
||||
dec cx
|
||||
jnz sections
|
||||
mov esi,info7
|
||||
call showstr
|
||||
mov edx,[cs:entriepoint]
|
||||
mov cx,32
|
||||
call ShowHex
|
||||
clc
|
||||
pop es
|
||||
popa
|
||||
ret
|
||||
|
||||
errorelf:
|
||||
stc
|
||||
pop es
|
||||
popa
|
||||
ret
|
||||
|
||||
;==========DEBUG===========
|
||||
;CX adresse
|
||||
;->CX
|
||||
;<-
|
||||
;==========================
|
||||
debug:
|
||||
mov esi,info11
|
||||
call showstr
|
||||
xor edx,edx
|
||||
mov dx,cs
|
||||
shl edx,4
|
||||
add edx,ecx
|
||||
mov cx,32
|
||||
call ShowHex
|
||||
infini:
|
||||
jmp infini
|
||||
|
||||
;==========COPY2MEM===========
|
||||
;Copie de es:esi vers es:edi
|
||||
;->ES:ESI ES:EDI CX
|
||||
;<- Flag
|
||||
;=============================
|
||||
copy2mem:
|
||||
push eax
|
||||
push esi
|
||||
push edi
|
||||
push ecx
|
||||
mov esi,[es:edi+Sections.Offset]
|
||||
add esi,[cs:begin]
|
||||
mov ecx,[es:edi+Sections.Size]
|
||||
shr ecx,2
|
||||
inc ecx
|
||||
mov edi,[es:edi+Sections.Vadress]
|
||||
copietomem:
|
||||
mov eax,[es:esi]
|
||||
mov [es:edi],eax
|
||||
add edi,4
|
||||
add esi,4
|
||||
dec ecx
|
||||
jnz copietomem
|
||||
pop ecx
|
||||
pop edi
|
||||
pop esi
|
||||
pop eax
|
||||
ret
|
||||
|
||||
;==========ZERO2MEM===========
|
||||
;Remise à zero de es:edi
|
||||
;->ES:EDI CX
|
||||
;<- Flag
|
||||
;=============================
|
||||
zero2mem:
|
||||
push eax
|
||||
push esi
|
||||
push edi
|
||||
push ecx
|
||||
mov esi,[es:edi+Sections.Offset]
|
||||
add esi,[cs:begin]
|
||||
mov ecx,[es:edi+Sections.Size]
|
||||
shr ecx,2
|
||||
inc ecx
|
||||
mov edi,[es:edi+Sections.Vadress]
|
||||
mov eax,0
|
||||
zerotomem:
|
||||
mov [es:edi],eax
|
||||
add edi,4
|
||||
dec ecx
|
||||
jnz zerotomem
|
||||
pop ecx
|
||||
pop edi
|
||||
pop esi
|
||||
pop eax
|
||||
ret
|
||||
|
||||
begin dd 0
|
||||
entriepoint dd 0
|
||||
offsetheader dd 0
|
||||
offsetsection dd 0
|
||||
nbprogram dw 0
|
||||
nbsection dw 0
|
||||
symbol dd 0
|
||||
|
||||
;==========SHOWHEX===========
|
||||
;Affiche un nombre hexadécimal EDX de taille CX aprés le curseur
|
||||
;-> EDX un entier, CX la taille
|
||||
;<-
|
||||
;============================
|
||||
ShowHex:
|
||||
push ax
|
||||
push bx
|
||||
push cx
|
||||
push edx
|
||||
push si
|
||||
mov ax,cx
|
||||
shr ax,2
|
||||
sub cx,32
|
||||
neg cx
|
||||
shl edx,cl
|
||||
xor cx,cx
|
||||
inc cx
|
||||
Hexaize:
|
||||
rol edx,4
|
||||
mov bx,dx
|
||||
and bx,0fh
|
||||
mov si,ax
|
||||
mov al,[cs:bx+Tab]
|
||||
xor bx,bx
|
||||
mov ah,0x09
|
||||
mov bl,[cs:thecolor]
|
||||
int 0x10
|
||||
mov ah,0x0E
|
||||
int 0x10
|
||||
mov ax,si
|
||||
dec al
|
||||
jnz Hexaize
|
||||
pop si
|
||||
pop edx
|
||||
pop cx
|
||||
pop bx
|
||||
pop ax
|
||||
ret
|
||||
Tab db '0123456789ABCDEF'
|
||||
|
||||
;============EOL=============
|
||||
;Va en colonne CX
|
||||
;->
|
||||
;<- Flag Carry si erreur
|
||||
;============================
|
||||
eol:
|
||||
pusha
|
||||
mov bp,cx
|
||||
mov ah,03
|
||||
xor bx,bx
|
||||
int 10h
|
||||
mov ah,02
|
||||
mov cx,bp
|
||||
mov dl,cl
|
||||
int 10h
|
||||
popa
|
||||
ret
|
||||
|
||||
;============LOAD==============
|
||||
;Charge le groupe en mémoire en EBX pour le groupe CX
|
||||
;-> CX
|
||||
;<- Flag Carry si erreur
|
||||
;==============================
|
||||
load:
|
||||
push ax
|
||||
push ebx
|
||||
push ecx
|
||||
push edx
|
||||
push esi
|
||||
push edi
|
||||
push fs
|
||||
xor edx,edx
|
||||
xor ax,ax
|
||||
mov fs,ax
|
||||
mov si,The_Dot
|
||||
mov dx,[Sectors_Size]
|
||||
Resume_Loading:
|
||||
cmp cx,0x0FF0
|
||||
jae Finish_Loading
|
||||
push cx
|
||||
add cx,word [data]
|
||||
mov edi,Buffer
|
||||
call ReadSector
|
||||
pop cx
|
||||
jc near Boot_Error
|
||||
call showstr
|
||||
push esi
|
||||
push ebx
|
||||
push cx
|
||||
mov esi,Buffer
|
||||
mov cx,dx
|
||||
shr cx,2
|
||||
copie:
|
||||
mov eax,[ds:esi]
|
||||
mov [fs:ebx],eax
|
||||
add ebx,4
|
||||
add esi,4
|
||||
dec cx
|
||||
jnz copie
|
||||
pop cx
|
||||
pop ebx
|
||||
pop esi
|
||||
add ebx,edx
|
||||
call NextFatGroup
|
||||
jc near Boot_Error
|
||||
jmp Resume_Loading
|
||||
Finish_Loading:
|
||||
pop fs
|
||||
pop edi
|
||||
pop esi
|
||||
pop edx
|
||||
pop ecx
|
||||
pop ebx
|
||||
pop ax
|
||||
ret
|
||||
|
||||
;===========INITFAT=============
|
||||
;Initialise les variables de la fat
|
||||
;->
|
||||
;<- Flag Carry si erreur
|
||||
;===============================
|
||||
initfat:
|
||||
pusha
|
||||
push ds
|
||||
xor ax,ax
|
||||
mov ds,ax
|
||||
mov si,0x7C0B
|
||||
mov di,bootsector
|
||||
mov cx, 512
|
||||
rep movsb
|
||||
pop ds
|
||||
mov cx,[Reserved_Sectors]
|
||||
add cx,[Sectors_Hidden]
|
||||
adc cx,[Sectors_Hidden+2]
|
||||
mov bx,[Sectors_Per_Fat]
|
||||
mov di,Fat_Buffer
|
||||
push bx
|
||||
push cx
|
||||
readfat:
|
||||
call ReadSector
|
||||
jc Boot_Error
|
||||
inc cx
|
||||
add di,[Sectors_Size]
|
||||
dec bx
|
||||
jnz readfat
|
||||
pop cx
|
||||
pop bx
|
||||
xor ax,ax
|
||||
mov al,[Fats_Number]
|
||||
mul bx
|
||||
add cx,ax
|
||||
mov [entries],cx
|
||||
mov ax,32
|
||||
mul word [Fits_Number]
|
||||
div word [Sectors_Size]
|
||||
add cx,ax
|
||||
sub cx,2
|
||||
mov word [data],cx
|
||||
popa
|
||||
ret
|
||||
|
||||
;===========SEARCH============
|
||||
;Recherche le groupe d'un fichier
|
||||
;-> si nom du fichier
|
||||
;<- Flag Carry si erreur CX
|
||||
;=============================
|
||||
search:
|
||||
push bx
|
||||
push dx
|
||||
push di
|
||||
mov cx,[entries]
|
||||
mov di,Buffer
|
||||
call ReadSector
|
||||
jc Boot_Error
|
||||
xor bx,bx
|
||||
Next_Root_Entrie:
|
||||
cmp byte [di],0
|
||||
je Boot_Error
|
||||
push si
|
||||
push di
|
||||
push cx
|
||||
mov cx,32
|
||||
rep cmpsb
|
||||
pop cx
|
||||
pop di
|
||||
pop si
|
||||
je Found
|
||||
add di,32
|
||||
add bx,32
|
||||
inc dx
|
||||
cmp dx,[Fits_Number]
|
||||
ja Boot_Error
|
||||
cmp bx,[Sectors_Size]
|
||||
jb Next_Root_Entrie
|
||||
inc cx
|
||||
Found:
|
||||
mov cx,[di+26+32]
|
||||
pop di
|
||||
pop dx
|
||||
pop bx
|
||||
ret
|
||||
|
||||
;============SHOWRTN============
|
||||
;Affiche la chaine de caractère return
|
||||
;->
|
||||
;<- Flag Carry si erreur
|
||||
;===============================
|
||||
showrtn:
|
||||
push ds
|
||||
push ax
|
||||
push esi
|
||||
mov esi,return
|
||||
mov ax,cs
|
||||
mov ds,ax
|
||||
call showstr
|
||||
pop esi
|
||||
pop ax
|
||||
pop ds
|
||||
ret
|
||||
|
||||
;==============SHOWSTR=============
|
||||
;Affiche la chaine de caractère pointé par ds:esi à l'écran
|
||||
;-> DS, ESI
|
||||
;<- Flag Carry si erreur
|
||||
;==================================
|
||||
showstr:
|
||||
pushad
|
||||
xor bh,bh
|
||||
nextchar:
|
||||
mov al,[ds:esi]
|
||||
inc esi
|
||||
or al,al
|
||||
jz endshow
|
||||
cmp al,' '
|
||||
jb justchar
|
||||
cmp al,'#'
|
||||
jne nocolor
|
||||
mov al,[ds:esi]
|
||||
inc esi
|
||||
sub al,'0'
|
||||
shl al,3
|
||||
mov [cs:thecolor],al
|
||||
shr al,2
|
||||
add [cs:thecolor],al
|
||||
mov al,[ds:esi]
|
||||
inc esi
|
||||
sub al,'0'
|
||||
add [cs:thecolor],al
|
||||
jmp nextchar
|
||||
nocolor:
|
||||
cmp al,'@'
|
||||
jne nocolor2
|
||||
mov al,[ds:esi]
|
||||
inc esi
|
||||
sub al,'0'
|
||||
shl al,3
|
||||
mov cl,al
|
||||
shr al,2
|
||||
add cl,al
|
||||
mov al,[ds:esi]
|
||||
inc esi
|
||||
sub cl,'0'
|
||||
add cl,al
|
||||
call eol
|
||||
jmp nextchar
|
||||
nocolor2:
|
||||
xor bx,bx
|
||||
mov ah,0x09
|
||||
mov bl,[cs:thecolor]
|
||||
xor cx,cx
|
||||
inc cx
|
||||
int 0x10
|
||||
justchar:
|
||||
mov ah,0x0E
|
||||
int 0x10
|
||||
jmp nextchar
|
||||
endshow:
|
||||
popad
|
||||
ret
|
||||
|
||||
;==========READSECTOR============
|
||||
;Lit le secteur logique LBA CX et le met en es:di
|
||||
;-> CX (limité à 65536 secteurs, soit 32 Mo avec secteur 512 octets)
|
||||
;<- Flag Carry si erreur
|
||||
;================================
|
||||
ReadSector:
|
||||
pusha
|
||||
mov ax,cx
|
||||
xor dx,dx
|
||||
div word [Sectors_Per_Track]
|
||||
inc dl
|
||||
mov bl,dl
|
||||
xor dx,dx
|
||||
div word [Heads_Number]
|
||||
mov dh, [Boot_Drive]
|
||||
xchg dl,dh
|
||||
mov cx,ax
|
||||
xchg cl,ch
|
||||
shl cl,6
|
||||
or cl, bl
|
||||
mov bx,di
|
||||
mov si, 4
|
||||
mov al, 1
|
||||
Read_Again:
|
||||
mov ah, 2
|
||||
int 0x13
|
||||
jnc Read_Done
|
||||
dec si
|
||||
jnz Read_Again
|
||||
Read_Done:
|
||||
popa
|
||||
ret
|
||||
|
||||
;============NEXTFATGROUP===========
|
||||
;Renvoie en CX le groupe qui succède dans la FAT le groupe CX
|
||||
;-> CX
|
||||
;<- CX
|
||||
;===================================
|
||||
NextFatGroup:
|
||||
push bx
|
||||
push dx
|
||||
push di
|
||||
mov ax,cx
|
||||
mov bx,ax
|
||||
and bx,0000000000000001b
|
||||
shr ax,1
|
||||
mov cx,3
|
||||
mul cx
|
||||
mov di,Fat_Buffer
|
||||
add di,ax
|
||||
cmp bx,0
|
||||
jnz Even_Group
|
||||
Odd_Group:
|
||||
mov dx,[di]
|
||||
and dx,0x0FFF
|
||||
mov cx,dx
|
||||
jmp Next_Group_Found
|
||||
Even_Group:
|
||||
mov dx,[di+1]
|
||||
and dx,0xFFF0
|
||||
shr dx,4
|
||||
mov cx,dx
|
||||
Next_Group_Found:
|
||||
pop di
|
||||
pop dx
|
||||
pop bx
|
||||
ret
|
||||
|
||||
;============EnableA20============
|
||||
;->
|
||||
;<-
|
||||
;Ouvre l'autoroute A20
|
||||
;=================================
|
||||
EnableA20:
|
||||
cli
|
||||
call ClearKeybBuffer
|
||||
call WaitKeybCommand
|
||||
mov al,0xd1
|
||||
out 0x64,al
|
||||
call WaitKeybCommand
|
||||
mov al,0xdf
|
||||
out 0x60,al
|
||||
call WaitKeybCommand
|
||||
jmp A20Enabled
|
||||
WaitKeybCommand:
|
||||
in al,0x64
|
||||
test al,0x02
|
||||
jnz WaitKeybCommand
|
||||
ret
|
||||
ClearKeybBuffer:
|
||||
in al,0x64
|
||||
test al,0x01
|
||||
jnz ReadKeyb
|
||||
ret
|
||||
ReadKeyb:
|
||||
in al,0x60
|
||||
jmp ClearKeybBuffer
|
||||
A20Enabled:
|
||||
sti
|
||||
ret
|
||||
|
||||
|
||||
;=================================
|
||||
;CODE 32 bits mode protégé
|
||||
;=================================
|
||||
GoPMode32:
|
||||
[BITS 32]
|
||||
;Initialisation des selecteurs
|
||||
mov ax,ALL_DATA_SEL
|
||||
mov es,ax
|
||||
mov gs,ax
|
||||
mov fs,ax
|
||||
mov ss,ax
|
||||
mov ds,ax
|
||||
mov esp,0x3fffff
|
||||
push KERNEL_SEL
|
||||
push dword [cs:entriepoint]
|
||||
;Execution du système
|
||||
retf
|
||||
|
||||
section .data
|
||||
|
||||
thecolor db 0x07
|
||||
msg0 db '#12@20-=< Lancement du Chargeur ELF >=-',0x0A,0x0D,0x0A,0x0D,0
|
||||
msg1 db '#07Initialisation de la FAT',0
|
||||
msg2 db '#07Recherche du systeme',0
|
||||
msg3 db '#07Activation adressage 24 bits',0
|
||||
msg4 db '#07Chargement des descripteurs',0
|
||||
msg5 db '#07Passage en mode Flat real',0
|
||||
msg6 db '#07Chargement du systeme',0
|
||||
msg7 db '#07Mise en place format ELF',0
|
||||
msg8 db '#07Passage en mode protege',0
|
||||
|
||||
|
||||
info1 db 0x0A,0x0D,'Format ELF i386 reconnu, #08Sections :',0x0A,0x0D,0
|
||||
info2 db ' ',0
|
||||
info3 db '@12 | ',0
|
||||
info4 db ' - ',0
|
||||
info5 db ' -> ',0
|
||||
info6 db '@35#12NON ALLOUE #08',0
|
||||
info7 db 'Point entree en ',0
|
||||
info8 db '@48 2**',0
|
||||
info9 db '@15#12 VIDE #08',0
|
||||
info10 db '@70MEM',0
|
||||
info11 db 0x0A,0x0D,'#12Arret debug en ',0
|
||||
|
||||
return db 0x0A,0x0D,0
|
||||
|
||||
okay db ' #15[ #10OK #15]',0x0A,0x0D,0
|
||||
error db ' #15[#12Erreur#15]',0x0A,0x0D,0x0A,0x0D,' <Appuyez une touche pour redemarrer>',0
|
||||
The_Dot db '.',0
|
||||
System_File db "As",0,"y",0,"s",0,"t",0,"e",0,0x0F,0,0xB8,"m",0,".",0,"s",0,"y",0,"s",0,0,0,0,0,0xFF,0xFF,0xFF,0xFF
|
||||
entries dw 0
|
||||
data dw 0
|
||||
xy dw 0
|
||||
|
||||
GDTR:
|
||||
.Size: dw GDT_END
|
||||
.Address: dd 0
|
||||
|
||||
gdt0 equ $ ; null entry
|
||||
GDT:
|
||||
.Entry0: dw 0 ; limit 15:0
|
||||
dw 0 ; base 15:0
|
||||
db 0 ; base 23:16
|
||||
db 0 ; type
|
||||
db 0 ; limit 19:16, flags
|
||||
db 0 ; base 31:24
|
||||
|
||||
|
||||
SYS_CODE_SEL equ $-gdt0 ; code segment descriptor
|
||||
|
||||
.Entry1: dw 0xFFFF
|
||||
dw 0x0 ; base
|
||||
db 0x0 ; base
|
||||
db 0x9A ; present, ring 0, code, non-conforming, readable
|
||||
db 0xCF ; 32 bit
|
||||
db 0
|
||||
|
||||
|
||||
SYS_DATA_SEL equ $-gdt0 ; data segment descriptor
|
||||
|
||||
.Entry2: dw 0xFFFF
|
||||
dw 0x0 ; base
|
||||
db 0x0 ; base
|
||||
db 0x92 ; present, ring 0, data, expand-up, writable
|
||||
db 0xCF ; 32 bit
|
||||
db 0
|
||||
|
||||
|
||||
ALL_DATA_SEL equ $-gdt0 ; 4meg data segment descriptor
|
||||
|
||||
.Entry3: dw 0xFFFF
|
||||
dw 0x0 ; base
|
||||
db 0x0 ; base
|
||||
db 0x92 ; present, ring 0, data, expand-up, writable
|
||||
db 0xCF ; 4k pages, 32 bit
|
||||
db 0
|
||||
|
||||
|
||||
KERNEL_SEL equ $-gdt0 ; 4g code segment descriptor
|
||||
|
||||
.Entry4: dw 0xffff
|
||||
dw 0x0 ; base
|
||||
db 0x0 ; base
|
||||
db 0x9A ; present, ring 0, code, non-conforming, readable
|
||||
db 0xCF ; 4k pages, 32 bit
|
||||
db 0
|
||||
|
||||
GDT_END equ $-gdt0 -1
|
||||
|
||||
bootsector equ $
|
||||
Sectors_Size dw 0 ;Nombre d'octets/secteur
|
||||
Sectors_Per_Cluster db 0 ;Nombre de secteurs/cluster
|
||||
Reserved_Sectors dw 0 ;Nombre de secteurs réservé
|
||||
Fats_Number db 0 ;Nombre de copies de la FAT
|
||||
Fits_Number dw 0 ;Taille du répertoire racine
|
||||
Sectors_Per_Disk dw 0 ;Nombre secteurs du volume si < 32 Mo
|
||||
Media_Descriptor db 0 ;Descripteur de média
|
||||
Sectors_Per_Fat dw 0 ;Nombre secteurs/FAT
|
||||
Sectors_Per_Track dw 0 ;Nombre secteurs/piste
|
||||
Heads_Number dw 0 ;Nombre de tete de lecture/écriture
|
||||
Sectors_Hidden dd 0 ;Nombre de secteurs cachés
|
||||
Sectors_Per_Disk2 dd 0 ;Nombre secteurs du volume si > 32 Mo
|
||||
Boot_Drive db 0 ;Lecteur de démarrage
|
||||
Reserved db 0 ;NA (pour NT seulement)
|
||||
Extended_Boot_ID db 0 ;Signature Boot étendu 29h
|
||||
|
||||
Buffer equ $
|
||||
Fat_Buffer equ $+512
|
||||
|
||||
SECTION .bss
|
||||
|
||||
%include "elf.h"
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
CC=nasm -f bin -o
|
||||
|
||||
all: makall
|
||||
|
||||
makall: boot12.bin loader.sys
|
||||
|
||||
boot12.bin: boot12.asm
|
||||
$(CC) $@ $^
|
||||
|
||||
loader.sys: loader.asm
|
||||
$(CC) $@ $^
|
||||
|
||||
clean:
|
||||
rm -f *.o
|
||||
rm -f *.bin
|
||||
rm -f *.sys
|
||||
rm -f *.com
|
||||
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
megs: 1024
|
||||
romimage: file="/usr/share/bochs/BIOS-bochs-latest", address=0x00000
|
||||
vgaromimage: file="/usr/share/bochs/VGABIOS-lgpl-latest"
|
||||
boot: c
|
||||
ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
|
||||
ata0-master: type=disk, mode=flat, translation=auto, path="./final/harddisk.img.final", cylinders=0, heads=0, spt=0, biosdetect=auto, model="Generic 1234"
|
||||
cpu: count=1, ips=20000000
|
||||
mouse: enabled=1
|
|
@ -144,6 +144,9 @@
|
|||
|
||||
#define ror(addr) \
|
||||
asm volatile ("rorb $0x1,%0":"=m" (addr):);
|
||||
|
||||
#define finit() \
|
||||
asm volatile ("finit"::);
|
||||
/******************************************************************************/
|
||||
|
||||
#define outb(port,value) \
|
||||
|
|
32774
lib/3D/man.c
32774
lib/3D/man.c
File diff suppressed because it is too large
Load Diff
|
@ -436,8 +436,6 @@ int test3d()
|
|||
print("Mode graphique necessaire afin de lancer ce programme\r\n");
|
||||
return 1;
|
||||
}
|
||||
line(-100,-50,1800,200,egatorgb(4));
|
||||
waitascii();
|
||||
model3d model;
|
||||
float factor=100.0f;
|
||||
type3D type=TYPE3D_POINTS;
|
||||
|
|
|
@ -652,7 +652,7 @@ void showchar(u16 coordx, u16 coordy, u8 thechar, u8 attrib)
|
|||
|
||||
|
||||
|
||||
writepxl(currentfont->width*coordx + x, currentfont->height*coordy + y, color);
|
||||
writepxl(currentfont->width*coordx + x + 1, currentfont->height*coordy + y, color);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
24
makefile
24
makefile
|
@ -1,4 +1,4 @@
|
|||
all: bits32 bits64 floppy harddisk uefi
|
||||
all: bits32 bits64 harddisk uefi
|
||||
sync
|
||||
|
||||
bits32: ARCH=bits32
|
||||
|
@ -9,25 +9,21 @@ bits64: ARCH=bits64
|
|||
bits64: lib/libs.o system/system.sys
|
||||
sync
|
||||
|
||||
floppy: boot/boot12.bin final/floppy.img.final
|
||||
|
||||
harddisk: final/harddisk.img.final
|
||||
|
||||
uefi: final/harddiskuefi.img.final
|
||||
|
||||
install:
|
||||
(sudo apt-get install nasm gcc qemu fusefat fuseext2 cgdb ovmf bsdmainutils tar bsdmainutils indent binutils)
|
||||
(sudo apt-get install nasm gcc qemu fusefat fuseext2 cgdb ovmf bsdmainutils tar bsdmainutils indent binutils bochs bochs-x bochsbios)
|
||||
|
||||
clean:
|
||||
(cd system; make clean)
|
||||
(cd boot; make clean)
|
||||
(cd lib;make clean)
|
||||
(cd final;make clean)
|
||||
sync
|
||||
|
||||
littleclean:
|
||||
(cd system; make clean)
|
||||
(cd boot; make clean)
|
||||
(cd lib;make clean)
|
||||
(cd final;make littleclean)
|
||||
sync
|
||||
|
@ -48,9 +44,7 @@ retest: littleclean test
|
|||
|
||||
retest64: littleclean test64
|
||||
|
||||
floppytest: bits32 floppy qemu-floppy
|
||||
|
||||
refloppytest: littleclean floppytest
|
||||
testbochs: bits32 harddisk bochs-debug
|
||||
|
||||
view:
|
||||
(hexdump -C ./final/harddisk.img.final|head -c10000)
|
||||
|
@ -75,6 +69,9 @@ debug-system: bits32 harddisk qemu-debug
|
|||
debug-system64: bits64 uefi qemu-debug64
|
||||
(sleep 2;cgdb -x ./debug/system.txt)
|
||||
|
||||
bochs-debug:
|
||||
(killall bochs-debug;bochs -f ./debug/config.bochs)
|
||||
|
||||
qemu-debug:
|
||||
(killall qemu-system-i386;qemu-system-i386 -m 1G -drive format=raw,file=./final/harddisk.img.final -s -S &)
|
||||
|
||||
|
@ -87,18 +84,9 @@ qemu:
|
|||
qemu64:
|
||||
(killall qemu-system-x86_64;qemu-system-x86_64 -m 5G -drive format=raw,file=./final/harddiskuefi.img.final --bios /usr/share/qemu/OVMF.fd --enable-kvm -cpu host -s &)
|
||||
|
||||
qemu-floppy:
|
||||
(killall qemu-system-i386;qemu-system-i386 -m 1G -fda ./final/floppy.img.final --enable-kvm -cpu host -s &)
|
||||
|
||||
system/system.sys:
|
||||
(cd system; VESA=$(VESA) make)
|
||||
|
||||
boot/boot12.bin:
|
||||
(cd boot; make)
|
||||
|
||||
final/floppy.img.final:
|
||||
(cd final; make floppy.img.final)
|
||||
|
||||
final/harddisk.img.final:
|
||||
(cd final; make harddisk.img.final)
|
||||
|
||||
|
|
|
@ -99,8 +99,9 @@ int main(u32 magic, u32 addr)
|
|||
warning();
|
||||
else
|
||||
ok();
|
||||
printf(" -Installation des appels systemes utilisateur");
|
||||
printf(" -Installation des appels systemes utilisateur et du FPU");
|
||||
initsyscall();
|
||||
finit();
|
||||
ok();
|
||||
|
||||
retry:
|
||||
|
|
Loading…
Reference in New Issue