V6/usr/source/s7/nroff5.s
/
/
/ hyp1 -- driver
hyphen:
tst hypedf
bne 3f
tst hyf
beq 3f
inc hypedf
mov wordp,r0
clr nhyph
1:
jsr pc,punct
bne 1f
inc r0
br 1b
1:
jsr pc,alph
bne 3f
mov r0,wordstart
1:
inc r0
jsr pc,alph
beq 1b
dec r0
mov r0,hstart
1:
inc r0
tstb (r0)
beq 2f
jsr pc,punct
bne 3f
br 1b
2:
mov hstart,wordend
jsr pc,exword
beq 0f
jsr r5,suffix
tst exf
bne 0f
jsr r5,digram
0:
bit $4,hyf
beq 0f
mov wordend,r0
bicb $!177,-1(r0)
0:
mov wordstart,r0
bicb $!177,1(r0)
bit $10,hyf
beq 3f
bicb $!177,2(r0)
3:
rts pc
casehw:
jsr pc,skipcont
bne 2f
mov nexth,r1
cmp r1,$ehbuf-2
bhis 3f
1:
jsr pc,getchar
bmi 1f
cmpb r0,$' /
beq 4f
cmpb r0,$012
beq 1f
movb r0,(r1)+
cmp r1,$ehbuf-2
blo 1b
br 3f
1:
clrb (r1)+
mov r1,nexth
clrb (r1)+
2:
rts pc
3:
jsr r5,string;hmess
clrb *nexth
br 2b
4:
jsr pc,1b
br casehw
hmess: <Exception word space full.\n\0>
.even
exword:
clr exf
clr -(sp)
mov r1,-(sp)
mov r2,-(sp)
mov r3,-(sp)
mov r4,-(sp)
mov $hbuf,r2
mov hstart,r0
cmpb (r0)+,(r0)+
0:
mov r2,8(sp)
mov wordstart,r1
tstb (r2)
beq 4f
1:
movb (r2)+,r4
cmpb r4,$'-
beq 1b
movb (r1)+,r3
/ tstb r3
/ bne 2f
cmp r1,r0
blo 2f
tstb r4
beq 3f
2:
tstb r4
bne 2f
/ tstb (r1)
tstb -1(r0)
bne 2f
cmpb r3,$'s
beq 3f
2:
tstb r4
beq 0b
/ tstb r3
/ beq 2f
cmp r1,r0
bhis 2f
cmpb r4,r3
beq 1b
2:
tstb (r2)+
bne 2b
br 0b
3:
mov wordstart,r1
mov 8(sp),r2
clr 8(sp)
inc exf
1:
tstb (r1)+
cmpb (r2)+,$'-
bne 0f
bisb $200,-1(r1)
tstb (r2)+
0:
tstb (r2)
bne 1b
4:
mov (sp)+,r4
mov (sp)+,r3
mov (sp)+,r2
mov (sp)+,r1
tst (sp)+
rts pc
punct:
tst old
bne 4f
cmpb (r0),$010
beq 0f
movb (r0),r2
jsr pc,alph2
beq 0f
sez
rts pc
0:
clz
rts pc
4:
mov $3f,r2
1:
cmpb (r0),(r2)+
beq 2f
tstb (r2)
bne 1b
clz
2:
rts pc
3: < .,()"\'`\0> /should be more
.even
maplow:
cmp r2,$'a
bhis 1f
add $'a-'A,r2
1:
rts pc
vowel:
cmpb r2,$'a
beq 1f
cmpb r2,$'e
beq 1f
cmpb r2,$'i
beq 1f
cmpb r2,$'o
beq 1f
cmpb r2,$'u
beq 1f
cmpb r2,$'y
beq 1f
cmpb r2,$'A
beq 1f
cmpb r2,$'E
beq 1f
cmpb r2,$'I
beq 1f
cmpb r2,$'O
beq 1f
cmpb r2,$'U
beq 1f
cmpb r2,$'Y
1:
rts pc
checkvow:
mov r0,-(sp)
1:
movb -(r0),r2
jsr pc,vowel
beq 1f
jsr pc,alph
beq 1b
mov (sp)+,r0
clz
rts r5
1:
mov (sp)+,r0
sez
rts r5
/ hyp2 -- suffix and digram
digram:
mov hstart,r0
1:
jsr pc,alph
bne 3f
jsr pc,vowel
beq 1f
dec r0
br 1b
1:
mov r0,hstart
1:
movb -(r0),r2
jsr pc,alph2
bne 3f
jsr pc,vowel
bne 1b
clr maxdig
mov r0,nhstart
1:
mov $1,r3
movb -1(r0),r2
jsr pc,alph2
beq 2f
movb (r0),r2
mov $'a,r1
jsr r5,dilook; bxh
br 4f
2:
movb -2(r0),r2
mov $xxh,0f
jsr pc,alph2
beq 2f
mov $bxxh,0f
2:
movb -1(r0),r1
movb (r0),r2
jmp 7f
.data
7:
jsr r5,dilook; 0:xxh
jmp 8f
.text
8:
4:
movb (r0)+,r1
movb (r0),r2
jsr r5,dilook; xhx
movb (r0),r1
movb 1(r0),r2
jsr r5,dilook; hxx
cmp r3,maxdig
blos 2f
mov r3,maxdig
mov r0,maxloc
2:
cmp r0,hstart
blo 1b
mov nhstart,hstart
cmp maxdig,thresh
blo digram
bisb $200,*maxloc
inc nhyph
/ mov maxdig,*octbufp
/ inc octcnt
/ add $2,octbufp
br digram
3:
rts r5
dilook:
mov r4,-(sp)
bic $!177,r2
bic $!177,r1
jsr pc,maplow
sub $'a,r2
cmp r2,$'z-'a
bhi 3f
mov r2,r4
mov r1,r2
jsr pc,maplow
sub $'a,r2
cmp r2,$'z-'a
bhi 3f
mov r3,-(sp)
mov r2,r3
mpy $13.,r3
clr r2
clc
ror r4
adc r2
add r3,r4
add (r5)+,r4
movb (r4),r4
tst r2
bne 1f
asr r4
asr r4
asr r4
asr r4
1:
bic $!17,r4
mov r4,r3
mpy (sp)+,r3
br 4f
3:
clr r3
tst (r5)+
4:
mov (sp)+,r4
rts r5
suffix:
mov hstart,r0
jsr pc,alph
bne 4f
jsr pc,maplow
sub $'a,r2
asl r2
mov suftab(r2),-(sp)
bic $!37777,(sp)
beq 3f
1:
mov hstart,r0
mov (sp),r1
jsr pc,rdsuf
movb (r1),r3
beq 3f
bic $!17,r3
add r3,(sp)
add r1,r3
2:
movb -(r3),r2
cmp r3,r1
ble 2f
bic $!177,r2
mov r2,-(sp)
movb -(r0),r2
jsr pc,maplow
cmp r2,(sp)+
bne 1b
br 2b
2:
mov hstart,r0
tst (sp)+
movb (r1),r3
bic $!17,r3
add r1,r3
bitb $200,(r1)+
bne 1f
2:
dec r0
cmp r3,r1
ble 2f
tstb -(r3)
bpl 2b
1:
mov r0,hstart
dec hstart
bitb $100,-1(r1)
bne 2b
jsr r5,checkvow
bne 4f
bisb $200,(r0)
br 2b
2:
bitb $40,-(r1)
bne 4f
jsr pc,exword
bne suffix
br 4f
/ beq suffix
/ br 4f
3:
tst (sp)+
4:
rts r5
rdsuf:
mov r0,-(sp)
mov suff,nfile
mov 4(sp),r1
jsr pc,rdsufb
mov $sufb,r2
movb r0,(r2)+
mov r0,r3
bic $!17,r3
1:
dec r3
blt 1f
inc r1
jsr pc,rdsufb
movb r0,(r2)+
br 1b
1:
mov $sufb,r1
mov (sp)+,r0
rts pc