[SqueakNOS-cvs] Re: Squeaknos-cvs digest, Vol 1 #54 - 1 msg

[Jan R. <ruz...@ya...>]

As far as I can see the compiling Smallatalk  into any other language than
natural assembler of the machine is waste of time.

HAL - ok but as I would like to see have it done in object oriented manner.
have the smalltalk generate assembly rutines which will be than called for 
for higer level I/O .

That is my 0.02$ .

Binary comapatibility with existing drivers for linux or other free OS would be
huge step forward.

Have a nice time.
Jan 
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> Today's Topics:
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>    1. Eeek! (Alan Grimes)
> 
> --__--__--
> 
> Message: 1
> Date: Fri, 15 Nov 2002 00:13:03 -0500
> From: Alan Grimes <ala...@st...>
> To: squ...@li...
> Subject: [SqueakNOS-cvs] Eeek!
> 
> I have a renewed interest in ulta-light and highly customizable 
> operating systems so I came to join this ML only to discover, to my 
> horror, that I was already a member. This is horrifying because there 
> has been so little trafic that I had forgotten I had subscribed, 
> probably quite some time ago. =(((
> 
> Anyawy, I am putting togeather a dual-athlon purely for develment and it 
> will be on the net for as long as I am (most of the day!) so it will be 
> a very good develment platform as I predict multiprocessing will become 
> the dominant paradigm in the coming years. (just ignore the fact that it 
> will have only 128 mb of ram and 850 mb HD for the forseeable future ;).
> 
> 
> My thinking on how to accomplish the SNOS has arrived at the concept of 
> a "Hardware Abstraction Layer" that has been used by Micro$oft for some 
> time...
> 
> A hardware abstraction layer is a system of software that provides 
> "Mechanism not policy" to the higher level code.
> 
> 
> I propose a general hardware abstraction layer based on the language C-- 
> and the L4 microkernel.
> 
> C-- is being developed with some backing from M$, It is a varriant of C 
> that is optomized as an intermediate form for high-level languages which 
> today have to rely on the obscene GCC compiler. It is intended to be a 
> "portable assembly language". -- Perfect for what we need.
> 
> I propose that we develop C-- instead of going streight to machine code 
> because I want the HAL to be multi-purpose, supporting anyone's language 
> system instead of just Squeak, most notable of which the interpriter 
> that I plan to write as a part of my AI project.
> 
> A C-- complier can be bootstrapped as follows.
> 
> The current Smalltalk > C compiler can be converted and optomized to C-- 
> with not too much effort.
> 
> Then we will need to produce an optomizing (hopefully paralellizing!) 
> C-- > Object code compiler in Smalltalk. To get the machine-level binary 
> we do this:
> 
> Compile the compiler with the smalltalk > C-- compiler then inspect it 
> for errors.
> 
> Then we use the smalltalk version of the C-- > object code compiler ON 
> THE C-- version of the same compiler to produce the machine executable.
> 
> Next we take Fiasco or some other L4 varriant and then convert it to 
> C--, and do the same with a de-cruftified GRUB (or possibly a Multiboot 
> version of Minix's superb boot monitor).
> 
> We'll also need linkers and ports of Bison/fLex, and whatever other 
> tools belong in the HAL package.
> 
> This, a few other utilities, shells, and drivers will give us 1.0. =)
> 
> 
> This is a bit more ambitious than what Squeak NOS has been about before 
> but it will give the world a solid HAL that, by all rights, should send 
> Linux to the dustbin of history... =)))))
> 
> I have been having some nightmarish dealings with the USPS (I'm out 
> $140) but I have bought some cheap temporary ram that will, with a great 
> deal of luck, boot my develment box and put me in business.
> 
> I plan to install BeOS on it and provide anyone who wants to help me 
> with my projects access to it.
> 
> 
> 
> 
> --__--__--
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> End of Squeaknos-cvs Digest


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