Re: [Unix-jun72] when did jsr r5 stop?

On Fri, May 09, 2008 at 10:34:10PM -0400, Doug Merritt wrote: I promise I'll stop replying now, just one more... After unpacking the 5th Edition source, there are lots of applications still written in assembly code; I'll provide a list below. And many of them still use the jsr r5, calling convention. 5th Edition UNIX has two a.out header types: the 0407 a.out header still allowed mixed code+data with writable code. The 0410 a.out header was the first where code was read-only, and data was separated out. Looking at the paper manuals I've got, 4th Edition is the first manual which mentions the 0410 header. I would guess that the 0410 read-only code header was created when PDP-11s arrived which supported split instruction/data address spaces. And here are the .s files from 5th Edition: usr/c/c0t.s usr/source/s1/grep.s usr/source/s4/exp.s usr/c/c1t.s usr/source/s1/kill.s usr/source/s4/ffltpr.s usr/c/cctab.s usr/source/s1/ld1.s usr/source/s4/floor.s usr/c/efftab.s usr/source/s1/ld2.s usr/source/s4/fltpr.s usr/c/regtab.s usr/source/s1/ldx.s usr/source/s4/fmod.s usr/c/sptab.s usr/source/s1/lpd.s usr/source/s4/fork.s usr/fort/sum.s usr/source/s2/mesg.s usr/source/s4/fstat.s usr/mdec/dldr.s usr/source/s2/mkdir.s usr/source/s4/gamma.s usr/mdec/dli.s usr/source/s2/msh.s usr/source/s4/getc.s usr/mdec/dtf.s usr/source/s2/passwd.s usr/source/s4/getchr.s usr/mdec/list.s usr/source/s2/pfe.s usr/source/s4/getcsw.s usr/mdec/mcopy.s usr/source/s2/rew.s usr/source/s4/getgid.s usr/mdec/rkf.s usr/source/s2/rmdir.s usr/source/s4/getuid.s usr/mdec/tboot.s usr/source/s2/strip.s usr/source/s4/gtty.s usr/mdec/uboot.s usr/source/s2/sum.s usr/source/s4/hmul.s usr/source/s1/ar.s usr/source/s2/time.s usr/source/s4/hsw.s usr/source/s1/as11.s usr/source/s2/tp1.s usr/source/s4/kill.s usr/source/s1/as12.s usr/source/s2/tp2.s usr/source/s4/ldfps.s usr/source/s1/as13.s usr/source/s2/tp3.s usr/source/s4/link.s usr/source/s1/as14.s usr/source/s2/tp4.s usr/source/s4/locv.s usr/source/s1/as15.s usr/source/s2/tty.s usr/source/s4/log.s usr/source/s1/as16.s usr/source/s2/update.s usr/source/s4/ltod.s usr/source/s1/as17.s usr/source/s2/write.s usr/source/s4/makdir.s usr/source/s1/as18.s usr/source/s3/atan.s usr/source/s4/mcrt0.s usr/source/s1/as19.s usr/source/s3/atof.s usr/source/s4/mdate.s usr/source/s1/as21.s usr/source/s3/atoi.s usr/source/s4/mknod.s usr/source/s1/as22.s usr/source/s3/compar.s usr/source/s4/mount.s usr/source/s1/as23.s usr/source/s3/crypt.s usr/source/s4/nargs.s usr/source/s1/as24.s usr/source/s3/dpadd.s usr/source/s4/nice.s usr/source/s1/as25.s usr/source/s3/ecvt.s usr/source/s4/nlist.s usr/source/s1/as26.s usr/source/s3/exp.s usr/source/s4/open.s usr/source/s1/as27.s usr/source/s3/fakfp.s usr/source/s4/pipe.s usr/source/s1/as28.s usr/source/s3/fp1.s usr/source/s4/pow.s usr/source/s1/as29.s usr/source/s3/fp2.s usr/source/s4/printf.s usr/source/s1/bas0.s usr/source/s3/fp3.s usr/source/s4/prof.s usr/source/s1/bas1.s usr/source/s3/fpx.s usr/source/s4/putc.s usr/source/s1/bas2.s usr/source/s3/gamma.s usr/source/s4/putchr.s usr/source/s1/bas3.s usr/source/s3/get.s usr/source/s4/read.s usr/source/s1/bas4.s usr/source/s3/hypot.s usr/source/s4/reset.s usr/source/s1/bas5.s usr/source/s3/ldiv.s usr/source/s4/retrn.s usr/source/s1/basx.s usr/source/s3/log.s usr/source/s4/rsave.s usr/source/s1/cat.s usr/source/s3/mesg.s usr/source/s4/sbrk.s usr/source/s1/chown.s usr/source/s3/mon.s usr/source/s4/seek.s usr/source/s1/clri.s usr/source/s3/nlist.s usr/source/s4/setgid.s usr/source/s1/db1.s usr/source/s3/pow.s usr/source/s4/setuid.s usr/source/s1/db2.s usr/source/s3/put.s usr/source/s4/signal.s usr/source/s1/db3.s usr/source/s3/qsort.s usr/source/s4/sin.s usr/source/s1/db4.s usr/source/s3/rand.s usr/source/s4/sleep.s usr/source/s1/dc1.s usr/source/s3/sin.s usr/source/s4/sqrt.s usr/source/s1/dc2.s usr/source/s3/sqrt.s usr/source/s4/stat.s usr/source/s1/dc3.s usr/source/s3/ttyn.s usr/source/s4/stime.s usr/source/s1/dc4.s usr/source/s4/abort.s usr/source/s4/stty.s usr/source/s1/dc5.s usr/source/s4/atan.s usr/source/s4/sync.s usr/source/s1/diff2.s usr/source/s4/atan2.s usr/source/s4/time.s usr/source/s1/dsw.s usr/source/s4/atof.s usr/source/s4/times.s usr/source/s1/du.s usr/source/s4/chdir.s usr/source/s4/umount.s usr/source/s1/ed1.s usr/source/s4/chmod.s usr/source/s4/unlink.s usr/source/s1/ed2.s usr/source/s4/chown.s usr/source/s4/wait.s usr/source/s1/ed3.s usr/source/s4/close.s usr/source/s4/write.s usr/source/s1/fed1.s usr/source/s4/cos.s usr/source/s7/roff1.s usr/source/s1/fed2.s usr/source/s4/crand.s usr/source/s7/roff2.s usr/source/s1/fed3.s usr/source/s4/creat.s usr/source/s7/roff3.s usr/source/s1/form1.s usr/source/s4/crt0.s usr/source/s7/roff4.s usr/source/s1/form2.s usr/source/s4/crypt.s usr/source/s7/roff5.s usr/source/s1/form3.s usr/source/s4/dup.s usr/source/s7/roff7.s usr/source/s1/form4.s usr/source/s4/ecvt.s usr/source/s7/roff8.s usr/source/s1/form5.s usr/source/s4/execl.s usr/source/s7/suftab.s usr/source/s1/form6.s usr/source/s4/execv.s usr/sys/conf/low.s usr/source/s1/getty.s usr/source/s4/exit.s usr/sys/conf/mch.s Cheers, Warren