6 May
1998
6 May
'98
11:45 p.m.
Mahlzeit
The setup looks more complicated than the supnik emulator. So, I'll
look tomorrow. What I have noticed is, that there is bsdi and freeBSD
mentioned in p11conf but not linux. Does it require a BSD?
Mahlzeit
endergone Zwiebeltuete
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Well, no, at this point you're in single-user mode. To continue,
enter ^D:
# Fast boot ... skipping disk checks
checking quotas: done.
Assuming NETWORKING system ...
add host 192.109.197.211: gateway 127.1
add net default: gateway freebie.lemis.com
starting system logger
preserving editor files
clearing /tmp
standard daemons: update cron accounting.
starting network daemons: inetd rwhod printer.
starting local daemons:.
Wed May 6 10:45:41 CST 1998
May 6 10:45:42 pdp11 init: kernel security level changed from 0 to 1
2.11 BSD UNIX (pdp11.lemis.com) (console)
login:
I've forgotten what the standard password on root is; I fear it has
*not* been removed. It could be 'begemot' or 'begemot1'. To change
it, you will need to rebuild passwd, which will not work otherwise.
Do that in /usr/src/bin/passwd. If you have trouble, I can send you a
passwd binary.
Greg
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I don't see them at
http://cm.bell-labs.com/cm/cs/who/dmr/1stEdman.html. Where are they?
It shouldn't be that hard to make HTML directly from the roff source (I
could probably be persuaded to do something like this, given the roff
source first of course!)
Alan Bain
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From Greg Lehey <grog(a)lemis.com> Thu May 7
09:04:16 1998
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Date: Thu, 7 May 1998 08:34:16 +0930
From: Greg Lehey <grog(a)lemis.com>
To: Tim Bradshaw <tfb(a)aiai.ed.ac.uk>, pups(a)minnie.cs.adfa.oz.au
Subject: Re: First edition Unix manuals
References: <199805061501.QAA08913(a)todday.aiai.ed.ac.uk>
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On Wed, 6 May 1998 at 16:01:21 +0100, Tim Bradshaw wrote:
In case other people haven't seen this, Dennis
Ritchie has (scanned)
versions of these at:
http://www.cs.bell-labs.com/~dmr
Somebody else posted this a few days ago. Does anybody know how to
view them? They're in .gif format, and xv only shows me the first
page.
Greg
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From Greg Lehey <grog(a)lemis.com> Thu May 7
10:08:49 1998
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Date: Thu, 7 May 1998 09:38:49 +0930
From: Greg Lehey <grog(a)lemis.com>
To: wkt(a)cs.adfa.oz.au
Cc: m(a)mbsks.franken.de, pups(a)minnie.cs.adfa.oz.au
Subject: Re: Using P11 emulator (was 2.11BSD installation problems)
References: <199805060638.QAA02895(a)henry.cs.adfa.oz.au>
<199805062043.GAA03625(a)henry.cs.adfa.oz.au>
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In-Reply-To: <199805062043.GAA03625(a)henry.cs.adfa.oz.au>; from Warren Toomey on Thu,
May 07, 1998 at 06:43:56AM +1000
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On Thu, 7 May 1998 at 6:43:56 +1000, Warren Toomey wrote:
Matthias,
Here are some instructions on getting that RP disk image working
with the Begemot P11 2.3 emulator. These should supplement Greg's email.
Hey, I thought you were in freezing Tasmania :-)
Running the 2.11BSD RP disk image on the P11
Emulator
Ok, here's how I got P11-2.3 running. Firstly, I extracted the source code
for P11 from the tarball, and built the emulator in the extracted emu
directory. Note: you need lots of virtual memory to build instab.o.
With p11 built, I went into ../run, and copied the following files here:
total 16
-rw------- 1 root wheel 1562 Apr 22 19:56 mon.help
-rw------- 1 root wheel 648 Apr 22 19:55 p11conf
-rw------- 1 root wheel 4096 Dec 12 1994 qna.rom
-rw------- 1 root wheel 512 Apr 22 19:41 rp.boot
All except p11conf came from ../emu. I had a hard time getting the p11conf
configuration file working, what with the cpp path etc. So I basically made
a p11conf file which doesn't use any #defines. Here it is:
libdir = .
ctrl rl 017774400 0160 4 4000
end
ctrl rp 017776700 0254 5 4000
0 /usr/local/src/RP_211bsd_root 12
end
ctrl kl
017777560 060 064 4 ../emu/IOProgs/tty_net -7 -t 10002
017776500 0300 0304 4 ../emu/IOProgs/tty_net -7 -t 10003
end
ctrl mr 017777520 ./rp.boot
end
ctrl lp 017777514 0200 4
end
ctrl tm 017772520 0224 5
end
Note that the emulated RP disk image is at /usr/local/src/RP_211bsd_root.
The number 12 after this is arbitrary, I have no idea what it does.
Now, to run the emulator using the p11conf above from the run directory,
do ../emu/p11 -d &. You can run it in the background as it doesn't require
any keyboard interaction. Then telnet localhost 10002, and hit Return a few
times. You will see:
In fact, you can use any port from 10000 to 10003. They map to
/dev/console and /dev/ttyl1 through /dev/ttyl3 (though for some reason
/etc/ttys doesn't contain entries for the latter two).
telnet
localhost 10002
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
-----
<---- Hit Return once or twice here
: xp(0,0,0)unix
Boot: bootdev=05000 bootcsr=0176700
2.11 BSD UNIX #11: Tue Jan 6 16:57:02 MET 1998
root@pdp11.begemot.com:/usr/src/sys/HIPPON
attaching lo0
phys mem = 2097152
avail mem = 1668352
user mem = 307200
January 8 08:25:02 init: configure system
lp 0 csr 177514 vector 200 attached
rl 0 csr 174400 vector 160 attached
tm 0 csr 172520 vector 224 attached
xp 0 csr 176700 vector 254 attached
cn 1 csr 176500 vector 300 attached
cn 2 csr 176510 vector 310 skipped: No CSR.
cn 3 csr 176520 vector 320 skipped: No CSR.
cn 4 csr 176530 vector 330 skipped: No CSR.
erase, kill ^U, intr ^C
#
That's it!! From Greg Lehey <grog(a)lemis.com> Thu May 7
10:16:40 1998
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Date: Thu, 7 May 1998 09:46:40 +0930
From: Greg Lehey <grog(a)lemis.com>
To: Matthias Bruestle <m(a)mbsks.franken.de>, wkt(a)cs.adfa.oz.au
Cc: pups(a)minnie.cs.adfa.oz.au
Subject: Re: Using P11 emulator (was 2.11BSD installation problems)
References: <199805062043.GAA03625(a)henry.cs.adfa.oz.au>
<m0yXC0k-000HqiC(a)mbsks.franken.de>
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06, 1998 at 11:45:58PM +0200
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On Wed, 6 May 1998 at 23:45:58 +0200, Matthias Bruestle wrote:
Mahlzeit
Mahlzeit (*r�lps*)
The setup looks more complicated than the supnik
emulator. So, I'll
look tomorrow. What I have noticed is, that there is bsdi and freeBSD
mentioned in p11conf but not linux. Does it require a BSD?
Yes, I think so. The access to the machine goes via the tunnel
driver, and that would need to be completed for Linux. The authors
don't use Linux, so they haven't done the work. They don't use BSD/OS
much any more, so if you are going to install one, FreeBSD is the
obvious choice, especially considering the price differential.
Of course, any old UNIX user should be using BSD anyway, especially if
you want to emulate older BSDs :-)
Greg
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From "Ed G." <edgee(a)cyberpass.net> Thu
May 7 10:45:41 1998
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From: "Ed G." <edgee(a)cyberpass.net>
To: pups(a)minnie.cs.adfa.oz.au
Date: Wed, 6 May 1998 20:45:41 -0400
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Subject: Floating Point-The Results Are In!
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Using a new approach, I have re-counted the number of floating point
operations for the utilities contained in Unix's bin directory.
According to my results, many important 7th Edition programs such as
adb, awk and tar make heavy use of floating point on the PDP-11.
As you know, my first approach was to simple-mindedly examine every
word of a given program's disk image to come up with an estimate of
the number of floating point operations used by the program.
I would like to thank those who pointed out the shortcoming of this
approach and offered valuable advice on how to achieve my aim of
accurate counts. Based on these comments, I decided to create a
full fledged disassembler for the PDP-11.
I have tested my program and believe it produces an exact count of
all floating point operations.
In case you're interested in how my initial estimates compare with
the new, precise counts, I list those data below as well.
New Approach.
uv7 bin directory
Programs using 10 or more floating point ops.
graph 674
awk 657
spline 389
sa 300
prof 260
iostat 243
t450 222
t300 222
t300s 212
vplot 187
tek 185
adb 128
units 118
random 116
xsend 106
xget 106
tsort 106
tar 106
refer 106
quot 106
nroff 88
factor 88
ac 88
primes 78
poke6 62
lex 51
roff 32
as 18
Old Approach.
uv7 bin directory
Programs using 100 or more floating point ops.
awk 2540
refer 1644
xsend 1326
tbl 1315
graph 1300
xget 1288
adb 1152
eqn 918
enroll 915
neqn 874
nroff 841
make 822
spline 812
yacc 789
sa 714
tar 706
lex 628
tek 618
prof 608
t300s 604
dc 601
vplot 582
iostat 579
t300 576
t450 574
em 530
bc 509
ratfor 474
quot 452
tsort 407
sh 381
expr 380
units 379
ac 365
sort 358
ps 327
restor 323
rmail 321
ed 321
mail 321
ptx 320
egrep 313
ls 310
ps.old 306
m4 304
random 298
su 296
tp 285
ops 282
cu 282
diff 277
pr 275
poke6 275
sed 267
find 267
dump 261
deroff 255
icheck 251
ls.11 249
ld 246
login 240
cptree 230
passwd 227
login.old 218
cc 210
prep 205
at 203
dumpdir 197
join 196
wc 193
tc 192
nm 191
pstat 190
file 187
pr.old 186
crypt 182
date 181
grep 180
ranlib 174
fgrep 172
ncheck 159
checkeq 157
du 155
who 152
as 152
od 151
look 149
roff 149
ar 146
vpr 144
dd 141
tk 141
time 139
rm 138
cb 134
mv 134
comm 133
newgrp 133
dcheck 132
factor 132
rmdir 125
write 125
primes 124
cmp 121
dfOLD 120
df 120
size 117
v6sh 116
vcopy 113
nice 113
col 110
ln 106
sum 105
clri 104
cat 103
tail 103
sleep 101
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From Greg Lehey <grog(a)lemis.com> Thu May 7
11:37:24 1998
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From: Greg Lehey <grog(a)lemis.com>
To: edgee(a)cyberpass.net, pups(a)minnie.cs.adfa.oz.au
Subject: Re: Floating Point-The Results Are In!
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On Wed, 6 May 1998 at 20:45:41 -0400, Ed G. wrote:
Using a new approach, I have re-counted the number of
floating point
operations for the utilities contained in Unix's bin directory.
According to my results, many important 7th Edition programs such as
adb, awk and tar make heavy use of floating point on the PDP-11.
I'll believe this when you pinpoint the instructions.
Greg
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From Alan Bain <afrb2(a)hermes.cam.ac.uk> Thu May
7 18:55:29 1998
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Subject: Re: Floating Point-The Results Are In!
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On Thu, 7 May 1998, Greg Lehey wrote:
On Wed, 6 May 1998 at 20:45:41 -0400, Ed G. wrote:
According to my paper copy of the UV7 manual, it is possible to run V7 on
a machine with no floating point, and the main problem is when compiling
say numeric code. There's a short section on how to do a build if you
don't have fp (like me on my 11/34). I think the V7 manual may well be
on line; but if not I can do a Xerox of this if it would be useful,
Alan Bain
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Using a new approach, I have re-counted the
number of floating point
operations for the utilities contained in Unix's bin directory.
According to my results, many important 7th Edition programs such as
adb, awk and tar make heavy use of floating point on the PDP-11.
I'll believe this when you pinpoint the instructions.
From Greg Lehey <grog(a)lemis.com> Thu May 7
19:23:06 1998
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From: Greg Lehey <grog(a)lemis.com>
To: Alan Bain <afrb2(a)hermes.cam.ac.uk>, pups(a)minnie.cs.adfa.oz.au
Subject: Re: Floating Point-The Results Are In!
References: <19980507110724.M396(a)freebie.lemis.com>
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On Thu, 7 May 1998 at 9:55:29 +0100, Alan Bain wrote:
On Thu, 7 May 1998, Greg Lehey wrote:
The Seventh Edition manuals are available in a number of places,
including of course the PUPS archive, but dmr has also put them on the
web at http://plan9.bell-labs.com/7thEdMan/index.html.
Greg
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On Wed, 6 May 1998 at 20:45:41 -0400, Ed G.
wrote:
According to my paper copy of the UV7 manual, it is possible to run V7 on
a machine with no floating point, and the main problem is when compiling
say numeric code. There's a short section on how to do a build if you
don't have fp (like me on my 11/34). I think the V7 manual may well be
on line; but if not I can do a Xerox of this if it would be useful, Using a new approach, I have re-counted the
number of floating point
operations for the utilities contained in Unix's bin directory.
According to my results, many important 7th Edition programs such as
adb, awk and tar make heavy use of floating point on the PDP-11.
I'll believe this when you pinpoint the instructions.
From "Robert D. Keys"
<rdkeys(a)seedlab1.cropsci.ncsu.edu> Thu May 7 23:05:02 1998
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From: "Robert D. Keys" <rdkeys(a)seedlab1.cropsci.ncsu.edu>
Message-Id: <199805071305.JAA02117(a)seedlab1.cropsci.ncsu.edu>
Subject: Re: First edition Unix manuals
In-Reply-To: <19980507083416.B396(a)freebie.lemis.com> from Greg Lehey at "May 7,
98 08:34:16 am"
To: grog(a)lemis.com (Greg Lehey)
Date: Thu, 7 May 1998 09:05:02 -0400 (EDT)
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On Wed, 6 May 1998 at 16:01:21 +0100, Tim Bradshaw
wrote:
He put up postscript versions, too.
I emailed him about the possibility of recreating the roff sources,
an I will probably wind up doing that. Then we will have a working
set of sources for clean copy.
Bob Keys
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In case other people haven't seen this,
Dennis Ritchie has (scanned)
versions of these at:
http://www.cs.bell-labs.com/~dmr
Somebody else posted this a few days ago. Does anybody know how to
view them? They're in .gif format, and xv only shows me the first
page.
Greg From Greg Lehey <grog(a)lemis.com> Fri May 8
09:02:36 1998
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From: Greg Lehey <grog(a)lemis.com>
To: "Robert D. Keys" <rdkeys(a)seedlab1.cropsci.ncsu.edu>
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Subject: Re: First edition Unix manuals
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On Thu, 7 May 1998 at 9:05:02 -0400, Robert D. Keys wrote:
On Wed, 6 May
1998 at 16:01:21 +0100, Tim Bradshaw wrote:
He put up postscript versions, too. In case other people haven't seen this,
Dennis Ritchie has (scanned)
versions of these at:
http://www.cs.bell-labs.com/~dmr
Somebody else posted this a few days ago. Does anybody know how to
view them? They're in .gif format, and xv only shows me the first
page.
Greg I emailed him about the possibility of recreating the
roff sources,
an I will probably wind up doing that. Then we will have a working
set of sources for clean copy.
Great idea. Keep us posted.
Greg
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From "Ed G." <edgee(a)cyberpass.net> Fri
May 8 14:14:03 1998
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From: "Ed G." <edgee(a)cyberpass.net>
To: Greg Lehey <grog(a)lemis.com>
Date: Fri, 8 May 1998 00:14:03 -0400
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Subject: Re: Floating Point-The Results Are In!
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I'll believe this when you pinpoint the
instructions.
Your skepticism spurred me to examine a Unix utility in depth to see
whether my results hold up. They do.
According to my count, tar uses 106 floating point operations. Here
are the first few. The complete list, tar3.txt, is attached as
well for your perusal. If you'd like to look at the complete
disassembled code for tar, let me know.
[root@oskar uv7]# ../dis/disuv7.pl < tar | grep ';17'
file header: 410 37400 4254 27422 20270 0 0 1
read 16128 bytes
prog string is 16128 bytes
0: SETD ;170011
20532: STCFD F0,(R1) ;176011
20562: STF F0,(R1) ;174011
22406: LDF F0,(R4)+ ;172424
22410: STF F0,-(SP) ;174046
22460: LDF F0,(R4)+ ;172424
22462: STF F0,-(SP) ;174046
22620: LDF F0,(R4)+ ;172424
22622: STF F0,-(SP) ;174046
24124: LDF F0,4(R5) ;172465 000004
24130: STF F0,-(SP) ;174046
26616: LDF F0,#56200 ;172427 056200
I chose tar as an example because it is an important utility and
because it is a relatively heavy user of floating point (as guaged
by the number of floating point ops contained in tar).
The following routines in 7th Edition tar appear to use floating
point:
~_filbuf
~_innum
~atof
~cvt
~ecvt
~fcvt
~gcvt
~isatty
~main
~mktemp
The addresses of these routines, as listed in tar's symbol
table--see attached file symlisttar.txt--correspond to those of the
disassembled floating point ops in tar.
I've learned a lot while responding to the criticisms offered by you
and others on this list. Thank you.
Ed
--Message-Boundary-293
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Content-description: Text from file 'TAR3.TXT'
[root@oskar uv7]# ../dis/disuv7.pl < tar | grep ';17'
file header: 410 37400 4254 27422 20270 0 0 1
read 16128 bytes
prog string is 16128 bytes
0: SETD ;170011
20532: STCFD F0,(R1) ;176011
20562: STF F0,(R1) ;174011
22406: LDF F0,(R4)+ ;172424
22410: STF F0,-(SP) ;174046
22460: LDF F0,(R4)+ ;172424
22462: STF F0,-(SP) ;174046
22620: LDF F0,(R4)+ ;172424
22622: STF F0,-(SP) ;174046
24124: LDF F0,4(R5) ;172465 000004
24130: STF F0,-(SP) ;174046
26616: LDF F0,#56200 ;172427 056200
26622: STF F0,177732(R5) ;174065 177732
26676: CLRF 177762(R5) ;170465 177762
26710: LDF F0,177762(R5) ;172465 177762
26714: CMPF F0,177732(R5) ;173465 177732
26720: CFCC ;170000
26724: LDF F0,#41040 ;172427 041040
26730: MULF F0,177762(R5) ;171065 177762
26742: LDCIF F1,R1 ;177101
26744: ADDF F0,F1 ;172001
26746: STF F0,177762(R5) ;174065 177762
27006: LDF F0,177762(R5) ;172465 177762
27012: CMPF F0,177732(R5) ;173465 177732
27016: CFCC ;170000
27022: LDF F0,#41040 ;172427 041040
27026: MULF F0,177762(R5) ;171065 177762
27040: LDCIF F1,R1 ;177101
27042: ADDF F0,F1 ;172001
27044: STF F0,177762(R5) ;174065 177762
27304: CLRF 177762(R5) ;170465 177762
27314: LDF F0,#40200 ;172427 040200
27320: STF F0,177752(R5) ;174065 177752
27324: LDF F0,#40640 ;172427 040640
27330: STF F0,177742(R5) ;174065 177742
27344: LDF F0,177742(R5) ;172465 177742
27350: MULF F0,F0 ;171000
27352: STF F0,177742(R5) ;174065 177742
27366: LDF F0,177752(R5) ;172465 177752
27372: MULF F0,177742(R5) ;171065 177742
27376: STF F0,177752(R5) ;174065 177752
27422: LDF F0,177762(R5) ;172465 177762
27426: DIVF F0,177752(R5) ;174465 177752
27434: LDF F0,177762(R5) ;172465 177762
27440: MULF F0,177752(R5) ;171065 177752
27444: STF F0,177762(R5) ;174065 177762
27462: LDF F0,177762(R5) ;172465 177762
27466: STF F0,-(SP) ;174046
27500: STF F0,177762(R5) ;174065 177762
27512: NEGF F0 ;170700
27514: STF F0,177762(R5) ;174065 177762
27520: LDF F0,177762(R5) ;172465 177762
32720: LDF F0,4(R5) ;172465 000004
32724: STF F0,-(SP) ;174046
32764: LDF F0,4(R5) ;172465 000004
32770: STF F0,-(SP) ;174046
33060: CLRF F0 ;170400
33062: CMPF F0,4(R5) ;173465 000004
33066: CFCC ;170000
33100: LDF F0,4(R5) ;172465 000004
33104: NEGF F0 ;170700
33106: STF F0,4(R5) ;174065 000004
33120: LDF F0,4(R5) ;172465 000004
33124: STF F0,-(SP) ;174046
33136: STF F0,4(R5) ;174065 000004
33146: CLRF F0 ;170400
33150: CMPF F0,177762(R5) ;173465 177762
33154: CFCC ;170000
33160: CLRF F0 ;170400
33162: CMPF F0,4(R5) ;173465 000004
33166: CFCC ;170000
33202: LDF F0,177762(R5) ;172465 177762
33206: DIVF F0,#41040 ;174427 041040
33212: STF F0,-(SP) ;174046
33224: STF F0,177752(R5) ;174065 177752
33230: ADDF F0,43662 ;172067 010426
33234: MULF F0,#41040 ;171027 041040
33240: STCFI F0,R0 ;175400
33252: CLRF F0 ;170400
33254: CMPF F0,177762(R5) ;173465 177762
33260: CFCC ;170000
33276: LDF F0,177752(R5) ;172465 177752
33302: STF F0,4(R5) ;174065 000004
33310: LDF F0,4(R5) ;172465 000004
33314: MULF F0,#41040 ;171027 041040
33320: STF F0,177752(R5) ;174065 177752
33324: CMPF F0,#40200 ;173427 040200
33330: CFCC ;170000
33414: LDF F0,4(R5) ;172465 000004
33420: MULF F0,#41040 ;171027 041040
33424: STF F0,4(R5) ;174065 000004
33436: LDF F0,4(R5) ;172465 000004
33442: STF F0,-(SP) ;174046
33454: STF F0,4(R5) ;174065 000004
33460: LDF F0,177752(R5) ;172465 177752
33464: STCFI F0,R0 ;175400
33666: LDF F0,4(R5) ;172465 000004
33672: STEXP F0,R0 ;175000
33700: LDEXP F0,R0 ;176400
33702: CFCC ;170000
33710: LDF F0,43672 ;172467 007756
33716: LDF F0,43672 ;172467 007750
33722: NEGF F0 ;170700
34112: LDF F0,4(R5) ;172465 000004
34116: MODF F0,#40200 ;171427 040200
34122: STF F1,@14(R5) ;174175 000014
[root@oskar uv7]#
--Message-Boundary-293
Content-type: text/plain; charset=US-ASCII
Content-transfer-encoding: 7BIT
Content-description: Text from file 'symlisttar.txt'
~main~usage~dorep~endtape=003004
~getdir~passtap=003414
~putfile=003566
~doxtrac=005656
~dotable=006776
~putempt=007126
~longt~pmode~select~checkdi=007506
~onintr~onquit~onhup~onterm~tomodes=010132
~checksu=010344
~checkw~respons=010560
~checkup=010750
~done~prefix~getwdir=011302
~lookup~bsrch~cmp~readtap=012704
~writeta=013350
~backtap=013644
~flushta=014044
~copy~freopen=014146
~fseek~rewind~fread~fwrite~system~fopen~scanf~fscanf~sscanf~_doscan=016056
~_innum~_instr~_getccl=021242
~fprintf=021376
~printf~sprintf=021532
~ungetc~_filbuf=022002
~gcvt~_strout=024570
~_flsbuf=025130
~fflush~_cleanu=025702
~fclose~_endope=026072
~create~_findio=026516
~atof~atoi~ctime~localti=027716
~sunday~gmtime~asctime=031220
~dysize~ct_numb=031560
~malloc~free~realloc=032422
~ecvt~fcvt~cvt~isatty~mktemp~stty~gtty~strcat~strcmp~strcpy
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From Greg Lehey <grog(a)lemis.com> Fri May 8
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From: Greg Lehey <grog(a)lemis.com>
To: edgee(a)cyberpass.net
Cc: pups(a)minnie.cs.adfa.oz.au
Subject: Re: Floating Point-The Results Are In!
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On Fri, 8 May 1998 at 0:14:03 -0400, Ed G. wrote:
Content-Description: Mail message body
> I'll believe this when you pinpoint the
instructions.
>
> Your skepticism spurred me to examine a Unix utility in depth to see
> whether my results hold up. They do.
>
> According to my count, tar uses 106 floating point operations. Here
> are the first few. The complete list, tar3.txt, is attached as
> well for your perusal. If you'd like to look at the complete
> disassembled code for tar, let me know.
>
> [root@oskar uv7]# ../dis/disuv7.pl < tar | grep ';17'
> file header: 410 37400 4254 27422 20270 0 0 1
> read 16128 bytes
> prog string is 16128 bytes
> 0: SETD ;170011
> 20532: STCFD F0,(R1) ;176011
> 20562: STF F0,(R1) ;174011
> 22406: LDF F0,(R4)+ ;172424
> 22410: STF F0,-(SP) ;174046
> 22460: LDF F0,(R4)+ ;172424
> 22462: STF F0,-(SP) ;174046
> 22620: LDF F0,(R4)+ ;172424
> 22622: STF F0,-(SP) ;174046
> 24124: LDF F0,4(R5) ;172465 000004
> 24130: STF F0,-(SP) ;174046
> 26616: LDF F0,#56200 ;172427 056200
>
> I chose tar as an example because it is an important utility and
> because it is a relatively heavy user of floating point (as guaged
> by the number of floating point ops contained in tar).
I don't know what the code above is intended to do, but it's not
floating point. At the very best, it would indicate the use of the
floating point registers for straightforward data moves. I stand by
my assertion that tar doesn't use floating point, neither in the
Seventh Edition nor elsewhere.
For the fun of it, I took the source of tar from the Seventh Edition
(/usr/src/cmd/tar/tar.c) and compiled it on 2.11BSD. I had some minor
compilation problems due to different directory structures, which I
solved by #ifdefing out the following code:
#if 0
for (j=0; j < DIRSIZ; j++)
*cp2++ = dbuf.d_name[j];
*cp2 = '\0';
close(infile);
putfile(buf, cp);
infile = open(".", 0);
i++;
lseek(infile, (long) (sizeof(dbuf) * i), 0);
#endif
I think we can agree that they don't contain FP code. Here are some
results:
[23] root--> cc -n -s -O tar.c -S
[24] root--> grep -i ldf tar.s
[25] root--> grep -i mul tar.s
The following routines in 7th Edition tar appear to
use floating
point:
> _filbuf
> _innum
> atof
> cvt
> ecvt
> fcvt
> gcvt
> isatty
> main
> mktemp
atof, cvt, ecvt, fcvt and gcvt are conversion routines which use
floating point, so I can agree that they would contain FP code which,
however, would not be used. isatty is a library routine which is
simple enough to quote:
/*
* Returns 1 iff file is a tty
*/
#include <sgtty.h>
isatty(f)
{
struct sgttyb ttyb;
if (gtty(f, &ttyb) < 0)
return(0);
return(1);
}
Evidently there's no FP code there.
It's fun to go looking for things like this. But never trust
anything, especially not your own judgement, until you have a couple
of different ways to prove it. You have the sources there; go ahead
and check them out.
Greg
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From "Robert D. Keys"
<rdkeys(a)seedlab1.cropsci.ncsu.edu> Fri May 8 23:28:40 1998
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Subject: Re: First edition Unix manuals
In-Reply-To: <19980508083236.N12200(a)freebie.lemis.com> from Greg Lehey at "May
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On Thu, 7 May 1998 at 9:05:02 -0400, Robert D. Keys
wrote:
I have the intro and first few manpages of section 1 done so far.
Maybe a week or so and then if someone will proof them. I will
port them in original roff source, and then make a troff set.
Dennis was wanting someone to tackle an html version. Alas, my
html is not so good.
Bob
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I emailed him about the possibility of recreating
the roff sources,
an I will probably wind up doing that. Then we will have a working
set of sources for clean copy.
Great idea. Keep us posted.
Greg From Alan Bain <afrb2(a)hermes.cam.ac.uk> Sat May
9 00:08:38 1998
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Subject: Re: First edition Unix manuals
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On Fri, 8 May 1998, Robert D. Keys wrote:
On Thu, 7 May
1998 at 9:05:02 -0400, Robert D. Keys wrote:
I have the intro and first few manpages of section 1 done so far.
Maybe a week or so and then if someone will proof them. I will
port them in original roff source, and then make a troff set.
Dennis was wanting someone to tackle an html version. Alas, my
html is not so good.
I emailed him about the possibility of recreating
the roff sources,
an I will probably wind up doing that. Then we will have a working
set of sources for clean copy.
Great idea. Keep us posted.
Greg From Tim Bradshaw <tfb(a)aiai.ed.ac.uk> Sat May 9
00:35:45 1998
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Date: Fri, 8 May 1998 15:35:45 +0100 (BST)
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From: Tim Bradshaw <tfb(a)aiai.ed.ac.uk>
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To: "Robert D. Keys" <rdkeys(a)seedlab1.cropsci.ncsu.edu>
Cc: grog(a)lemis.com (Greg Lehey), pups(a)minnie.cs.adfa.oz.au
Subject: Re: First edition Unix manuals
In-Reply-To: <199805081328.JAA03767(a)seedlab1.cropsci.ncsu.edu>
References: <19980508083236.N12200(a)freebie.lemis.com>
<199805081328.JAA03767(a)seedlab1.cropsci.ncsu.edu>
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* Robert D Keys wrote:
I have the intro and first few manpages of section 1
done so far.
Maybe a week or so and then if someone will proof them. I will
port them in original roff source, and then make a troff set.
Dennis was wanting someone to tackle an html version. Alas, my
html is not so good.
I could probably manufacture HTML from roff reasonably rapidly,
assuming the originals are vaguely clean. I used to do this for a
living at one piunt (:).
--tim
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From Jason Stevens <Jason.Stevens(a)aexp.com> Sat
May 9 03:25:16 1998
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Date: 08 May 1998 10:25:16 -0700
From: Jason Stevens <Jason.Stevens(a)aexp.com>
To: pups(a)minnie.cs.adfa.oz.au (Return requested)
Subject: Re: Floating Point-The Results Are In!
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Could it be possible that all the floating point calls are part of the crt.0
initialization libs?! They may be in there as part of a initialization
routeen to detect a fp, and use it if it's there, although I really doubt tar
would really need an fp call at all.. It sounds like some kind of generic
startup thing.. Unfortunatly I don't have any source to anything at the
moment... If anyone wants to dive check the startup libs... Oh well until
then, I'm just waiting for SCO to send me my no.. :)
TTYL!
Jason
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