From: Christopher Lemmer Webber <cwebber@dustycloud.org>
To: "Orians, Jeremiah (DTMB)" <OriansJ@michigan.gov>
Cc: General discussions about reproducible builds
<rb-general@lists.reproducible-builds.org>,
"guix-devel@gnu.org" <guix-devel@gnu.org>,
"Jeremiah@pdp10.guru" <Jeremiah@pdp10.guru>,
"bootstrappable@freelists.org" <bootstrappable@freelists.org>
Subject: Re: [rb-general] A major milestone in bootstrapping
Date: Wed, 29 Aug 2018 12:16:00 -0400 [thread overview]
Message-ID: <87sh2xno73.fsf@dustycloud.org> (raw)
In-Reply-To: <CY1PR09MB0811BD98189060E6FF288E69C60B0@CY1PR09MB0811.namprd09.prod.outlook.com>
Orians, Jeremiah (DTMB) writes:
>> Interesting... I'm looking at
>> https://github.com/oriansj/M2-Planet/blob/master/seed.M1
>> How was it written? It seems like a monumental task to write all
>> that and keep enough context in one's head! > Then again, I have
>> never written assembly before...
>
> If you'll notice https://github.com/oriansj/M2-Planet/blob/master/seed.M1#L2
>
> It explicitly says it was generated from stage0 https://savannah.nongnu.org/projects/stage0/
> Specifically cc_x86 http://git.savannah.nongnu.org/cgit/stage0.git/tree/stage2/cc_x86.s
> Which was built by M0: http://git.savannah.nongnu.org/cgit/stage0.git/tree/stage1/M0-macro.hex2
> Which was built by hex2: http://git.savannah.nongnu.org/cgit/stage0.git/tree/stage1/stage1_assembler-2.hex1
> Which was built by hex1: http://git.savannah.nongnu.org/cgit/stage0.git/tree/stage1/stage1_assembler-1.hex0
> Which was built by hex0: http://git.savannah.nongnu.org/cgit/stage0.git/tree/stage1/stage1_assembler-0.hex0
> Which was the 250byte seed used
>
> Well the work started back in 2016 with http://git.savannah.nongnu.org/cgit/stage0.git/tree/Linux%20Bootstrap/hex0.s
> and http://git.savannah.nongnu.org/cgit/stage0.git/tree/Linux%20Bootstrap/hex0.hex
>
> It was written one function at a time, with the arguments passed in registers and careful preservation of everything passed.
>
> - Jeremiah Orians
Ah very interesting! Thanks for the history :)
next prev parent reply other threads:[~2018-08-29 16:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-27 0:34 A major milestone in bootstrapping Jeremiah
2018-08-27 11:46 ` Christopher Lemmer Webber
2018-08-27 12:19 ` [rb-general] " Orians, Jeremiah (DTMB)
2018-08-29 16:16 ` Christopher Lemmer Webber [this message]
2018-08-29 20:58 ` Joshua Branson
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