ack/mach/m68k4/libem/dia.s

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.define .diagnos
.sect .text
.sect .rom
.sect .data
.sect .bss
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space = 040
del = 0177
.sect .text
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.diagnos:
move.l hol0,-(sp)
move.l hol0+4,d2
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beq 1f
move.l d2,a0
move.l #40,d0
3:
move.b (a0)+,d1
beq 2f
cmp.b #del,d1
bge 1f
cmp.b #space,d1
blt 1f
sub #1,d0
bgt 3b
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clr.b (a0)
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2:
move.l d2,-(sp)
pea fmt
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jsr printf
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add #12,sp
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jmp printf
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1:
move.l #unknwn,d2
bra 2b
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.sect .bss
getal:
.space 12
char:
.space 1
.align 4
.sect .data
hexs:
.ascii "0123456789abcdef"
.align 4
.sect .text
printf:
movem.l d0/d1/d2/a0/a1/a2/a3/a4/a5/a6, -(sp)
lea 44(sp), a6 ! a6 <- address of arguments
move.l (a6)+, a5 ! a5 <- address of format
next: move.b (a5)+, d0
beq out
cmp.b #'%', d0
beq procnt
put: move.l d0, -(sp)
jsr putchar ! long argument on stack
tst.l (sp)+
bra next
procnt: move.b (a5)+, d0
cmp.b #'d', d0 ! NOTE: %d means unsigned.
beq digit
cmp.b #'x', d0
beq hex
cmp.b #'s', d0
beq string
cmp.b #'%', d0 ! second % has to be printed.
beq put
tst.b -(a5) ! normal char should be printed
bra next
string: move.l (a6)+, a2 ! a2 <- address of string
sloop: move.b (a2)+, d0
beq next
move.l d0, -(sp)
jsr putchar ! long argument on stack
tst.l (sp)+
bra sloop
digit: move.l (a6)+, d1 ! d1 <- integer
move.l #getal+12, a2 ! a2 <- ptr to last part of buf
clr.b -(a2) ! stringterminator
1:
move.l d1,-(sp)
move.l #10,-(sp)
jsr .dvu ! d1 <- qotient; d0 <- remainder
add.l #'0', d0
move.b d0, -(a2)
tst.l d1 ! if quotient = 0 then ready
bne 1b
bra sloop ! print digitstring.
hex: move.l (a6)+, d1 ! d1 <- integer
move.l #getal+12, a2 ! a2 <- ptr to last part of buf
clr.b -(a2) ! stringterminator
move.l #7, d2 ! loop control
1: move.l d1, d0
and.l #15, d0
move.l #hexs,a0
add.l d0,a0
move.b (a0), -(a2) ! hex digit
asr.l #4, d1
dbf d2, 1b
bra sloop
out:
movem.l (sp)+, d0/d1/d2/a0/a1/a2/a3/a4/a5/a6
rts
putchar:
move.l #1, -(sp)
pea 11(sp)
move.l #1, -(sp)
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jsr __write
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lea 12(sp), sp
rts
.align 2
.sect .data
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fmt: .asciz "%s, line %d: "
unknwn: .asciz "unknown file"
.align 2