38 lines
514 B
ArmAsm
38 lines
514 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
|
|
.define .cfu
|
|
|
|
.sect .text
|
|
.cfu:
|
|
mov bx,sp
|
|
fstcw 4(bx)
|
|
wait
|
|
mov dx,4(bx)
|
|
or 4(bx),0xc00 ! truncating mode
|
|
wait
|
|
fldcw 4(bx)
|
|
cmp 8(bx),4
|
|
jne 2f
|
|
! loc 4 loc ? cfu
|
|
flds 12(bx)
|
|
fabs ! ???
|
|
fiaddl (bigmin)
|
|
fistpl 12(bx)
|
|
wait
|
|
mov ax,12(bx)
|
|
sub ax,(bigmin)
|
|
mov 12(bx),ax
|
|
1:
|
|
mov 4(bx),dx
|
|
wait
|
|
fldcw 4(bx)
|
|
ret
|
|
2:
|
|
! loc 8 loc ? cfu
|
|
fldd 12(bx)
|
|
fabs ! ???
|
|
fiaddl (bigmin)
|
|
fistpl 16(bx)
|
|
mov ax,16(bx)
|
|
sub ax,(bigmin)
|
|
mov 16(bx),ax
|
|
jmp 1b
|