[LinuxBIOS] Feature request - romcc

[Hamish Guthrie]

Hi,

It would be really nice if the default in code generation from romcc would
generate constant values as hex values, rather than decimal values - I have
been looking at the generated code in auto.inc and $1016 really means
nothing to me as opposed to 0x3f8, which means a lot to me.

I have had a brief look at romcc.c, and it is a HUGE piece of code, and I do
not think that it is of merit for me to look at that code while actually
trying to get something else working!

TIA

Regards

Hamish

[Steve Gehlbach]

> I have had a brief look at romcc.c, and it is a HUGE piece of code, and I do
> not think that it is of merit for me to look at that code while actually
> trying to get something else working!

Hamish:

IMHO, romcc is a very remarkable piece of work by Eric Biederman. I 
argued against it at the time as being too ambitious, but of course, 
Eric proved it could be done.  It really should be put up on its own web 
site as a separate project.  There are probably other projects that 
could benefit from a C code compiler that operates purely in registers 
without RAM enabled.

Steve G.

[Hamish Guthrie]

Steve:

I concur 100% with your comments, and must congratulate Eric on this
remarkable piece of work. All I am looking for is a few pointers as to
limitations, register usage etc., which I can then probably document for a
small HOWTO on ROMCC so that other newbies to ROMCC do not fall into the
holes I have apparently dug for myself!!! I am also now writing a few bits
of test code to try to figure out how registers are allocated and consumed
for variables/function calls, and thus maybe glean a bit more insight into
the issue.

-----Original Message-----
From: Steve Gehlbach [mailto:[e-mail]]
Sent: Sonntag, 10. April 2005 22:33
To: Hamish Guthrie
Cc: Linuxbios
Subject: Re: [LinuxBIOS] Feature request - romcc
> I have had a brief look at romcc.c, and it is a HUGE piece of code, and I

do
> not think that it is of merit for me to look at that code while actually
> trying to get something else working!

Hamish:

IMHO, romcc is a very remarkable piece of work by Eric Biederman. I
argued against it at the time as being too ambitious, but of course,
Eric proved it could be done.  It really should be put up on its own web
site as a separate project.  There are probably other projects that
could benefit from a C code compiler that operates purely in registers
without RAM enabled.

Steve G.

Steve Gehlbach  writes:
> > I have had a brief look at romcc.c, and it is a HUGE piece of code, and I do
> > not think that it is of merit for me to look at that code while actually
> > trying to get something else working!
>
> Hamish:
>
> IMHO, romcc is a very remarkable piece of work by Eric Biederman. I argued
> against it at the time as being too ambitious, but of course, Eric proved it
> could be done.  It really should be put up on its own web site as a separate
> project.  There are probably other projects that could benefit from a C code
> compiler that operates purely in registers without RAM enabled.

If the interest develops I will be happy to.  But until then that simply
generates more maintenance work, and I'd rather spend my time developing things.

Eric

[LinuxBIOS] VIA releases driver source packages

[Steve Gehlbach]

Is this new? I don't recall Via providing source before, or was it just 
that they were tight with their CLE266 datasheets?  Seems like this 
ought to help with the EPIA.  Source is at www.viaarena.com.

article:
http://lwn.net/Articles/131777/    (sub req'd)

---------------------------------------------
VIA Releases Linux Driver Source Packages

Freely available driver source code eases the development of tailor-made
applications for the latest Linux distributions

Taipei, Taiwan, 12 April 2005 - VIA Technologies, Inc, a leading innovator
and developer of silicon chip technologies and PC platform solutions, today
announced the extension of its open source support with the release of driver
source codes for specific VIA hardware.

.....
--------------------------------------------------------------

-Steve

"Hamish Guthrie"  writes:
> Hi,
>
> It would be really nice if the default in code generation from romcc would
> generate constant values as hex values, rather than decimal values - I have
> been looking at the generated code in auto.inc and $1016 really means
> nothing to me as opposed to 0x3f8, which means a lot to me.

I can probably be persuaded to implement a switch that changes the default.

For some uses hex values are very nice, for others decimal values are nice,
and there is really no perfect default.

Eric

[Hamish Guthrie]

Hi Eric,

Thanks for the replies.

I am now starting to get into romcc, and I am really impressed. I have
hacked my copy to give me HEX values for constants, but a switch would be
really great.

Hamish

-----Original Message-----
From: Eric W. Biederman [mailto:[e-mail]]On Behalf Of Eric W. Biederman
Sent: Montag, 11. April 2005 17:07
To: Hamish Guthrie
Cc: Linuxbios
Subject: Re: [LinuxBIOS] Feature request - romcc

"Hamish Guthrie"  writes:
> Hi,
>
> It would be really nice if the default in code generation from romcc would
> generate constant values as hex values, rather than decimal values - I

have
> been looking at the generated code in auto.inc and $1016 really means
> nothing to me as opposed to 0x3f8, which means a lot to me.

I can probably be persuaded to implement a switch that changes the default.

For some uses hex values are very nice, for others decimal values are nice,
and there is really no perfect default.

Eric
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