Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > alt.os.development > #18659

Re: flexible linux ELF

Show all headers | View raw

On 18/02/24 11:19, Paul Edwards wrote:

>>> you can use the getpid() syscall to get the process ID, then open and
>>> read /proc/<PID>/cmdline
>>>
>>> Apparently this method exists in Unix too.
>>
> Anyway, I have Ubuntu Kylin installed again on
> this Chicom computer, this time running under
> Virtualbox, and this time from an American site
> (I think) instead of direct from the PLA
> (People's Suppression Army), so I will try out
> this /proc theory now.

And ... it works!

So that's a very solid basis for PDOS/386.

With no msvcrt.dll or doscalls.dll present on
the PDOS/386 disk I am expecting to support
32-bit MSDOS (my definition), PDOS-generic,
Win32, OS/2 2.0 and Linux ELF executables.

All with a footprint that fits on a 360k floppy.

Or very close, anyway. ie it shouldn't be much
more than this:

C:\vbox>7z l pdos.vhd | grep -i pdos.sys
2024-02-14 12:10:02 ....A       241664       241664  PDOS.SYS

C:\vbox>7z l pdos.vhd | grep -i command.exe
2024-02-14 12:10:02 ....A        45568        49152  COMMAND.EXE

C:\vbox>7z l pdos.vhd | grep -i io.sys
2024-02-14 12:10:02 ....A        34103        36864  IO.SYS

C:\vbox>zcalc 241664+45568+34103
Calculated Value is 321335.000000


... in theory.

It would be cool if I could have a "hello world"
executable for each of those (OS/2, Linux etc)
on the same floppy. And even cooler if I could
run in 640k instead of the current requirement
for 2.5 MiB or something.

There were 80386 machines shipped with 1 MiB
of memory.

BFN. Paul.

Back to alt.os.development | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

flexible linux ELF Paul Edwards <mutazilah@gmail.com> - 2024-01-30 04:16 +0800
  Re: flexible linux ELF Paul Edwards <mutazilah@gmail.com> - 2024-02-17 07:52 +0800
    Re: flexible linux ELF scott@slp53.sl.home (Scott Lurndal) - 2024-02-17 16:49 +0000
      Re: flexible linux ELF Paul Edwards <mutazilah@gmail.com> - 2024-02-18 11:19 +0800
        Re: flexible linux ELF Paul Edwards <mutazilah@gmail.com> - 2024-02-18 17:48 +0800
    Re: flexible linux ELF Andy Valencia <vandys@vsta.org> - 2024-02-18 06:25 -0800
      Re: flexible linux ELF Paul Edwards <mutazilah@gmail.com> - 2024-02-19 10:44 +0800

csiph-web