43 lines
523 B
ArmAsm
43 lines
523 B
ArmAsm
|
.sect .text; .sect .rom; .sect .data; .sect .bss
|
||
|
|
.define .error
|
||
|
|
.define .Xtrp
|
||
|
|
|
||
|
|
! ax is trap number
|
||
|
|
! all registers must be saved
|
||
|
|
! because return is possible
|
||
|
|
! May only be called with error no's <16
|
||
|
|
.sect .text
|
||
|
|
.error:
|
||
|
|
push bp
|
||
|
|
push si
|
||
|
|
push di
|
||
|
|
push dx
|
||
|
|
push cx
|
||
|
|
push bx
|
||
|
|
push ax
|
||
|
|
mov cx,ax
|
||
|
|
mov bx,1
|
||
|
|
sal bx,cl
|
||
|
|
.extern .ignmask
|
||
|
|
.extern .trp
|
||
|
|
test bx,(.ignmask)
|
||
|
|
jne 2f
|
||
|
|
call .trp
|
||
|
|
2:
|
||
|
|
pop ax
|
||
|
|
pop bx
|
||
|
|
pop cx
|
||
|
|
pop dx
|
||
|
|
pop di
|
||
|
|
pop si
|
||
|
|
pop bp
|
||
|
|
ret
|
||
|
|
|
||
|
|
.Xtrp:
|
||
|
|
cmp ax,16
|
||
|
|
jge 1f
|
||
|
|
call .error
|
||
|
|
ret
|
||
|
|
1:
|
||
|
|
jmp .trp
|