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feat: ajout de 3 fonctions testant IRR,ISR et IMR Suppression de la commande "readmaskirq" au profit de la commande "readimr"

This commit is contained in:
Nicolas Hordé 2007-03-27 14:52:53 +00:00
parent 368d613e9f
commit d911b9f44b
1 changed files with 65 additions and 5 deletions
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70
noyau/8259a.asm
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@ -91,7 +91,7 @@ endp seteoi
;Lit les masques d'un contr“leur IRQ dans ax, 0 master ou slave 1 ds %1
PROC readmaskirq FAR
PROC readimr FAR
ARG @controleur:word
USES bx,dx
mov bx,[@controleur]
@ -104,7 +104,7 @@ PROC readmaskirq FAR
in al,dx
pop dx
ret
endp readmaskirq
endp readimr
;Lit le registre d'‚tat d'un contr“leur IRQ dans ax, 0 master ou slave 1 ds %1
PROC readisr FAR
@ -141,7 +141,65 @@ PROC readirr FAR
ret
endp readirr
interruptionbloc db '/interrupts',0
;carry si enable et pas carry si pas enable
PROC isenableirq FAR
ARG @irq:word
USES ax,cx,dx
mov ax,[@irq]
mov dx,MASTERPIC+IRQMASK
cmp al,7
jbe @@master
mov dx,SLAVEPIC+IRQMASK
@@master:
mov cl,al
and cx,7
in al,dx
neg al
bt ax,cx
ret
endp isenableirq
;carry si enable et pas carry si pas enable
PROC isinserviceirq FAR
ARG @irq:word
USES ax,cx,dx
mov ax,[@irq]
mov dx,MASTERPIC
cmp al,7
jbe @@master
mov dx,SLAVEPIC
@@master:
mov cl,al
mov al,ISR
out dx,al
and cx,7
in al,dx
neg al
bt ax,cx
ret
endp isinserviceirq
;carry si enable et pas carry si pas enable
PROC isrequestirq FAR
ARG @irq:word
USES ax,cx,dx
mov ax,[@irq]
mov dx,MASTERPIC
cmp al,7
jbe @@master
mov dx,SLAVEPIC
@@master:
mov cl,al
mov al,IRR
out dx,al
and cx,7
in al,dx
neg al
bt ax,cx
ret
endp isrequestirq
PROC installirqhandler FAR
@ -211,10 +269,13 @@ PROC installirqhandler FAR
endp installirqhandler
interruptionbloc db '/interrupts',0
PROC savecontext far
ARG @pointer:word
USES si
push [ss:bp]
push [word ptr ss:bp]
push esi
pushfd
mov si,[@pointer]
@ -326,7 +387,6 @@ jnz @@launchall
ret
endp irqhandler
PROC