Re: [PATCH 3/3] tools/nolibc: add support for 32-bit parisc

[Helge Deller <deller@gmx.de>]

On 4/7/26 20:14, Thomas Weißschuh wrote:
> On 2026-04-07 19:33:05+0200, Helge Deller wrote:
>> On 4/7/26 18:37, Thomas Weißschuh wrote:
>>> Extend nolibc to target the 32-bit parisc architecture.
>>> 64-bit is not yet supported.
>>
>> Adding 64-bit would be very cool.
> 
> It is on my roadmap. But the 64-bit kernel I tried didn't seem to boot.

Just in case you used qemu, you need to use "-machine C3700" or "-machine A400".
The default B160L is a 32-bit only machine.

> Also it would be nice if CONFIG_COMPAT could be disabled.

Ah... never thought about that. Will check, but I don't think
the kernel will become much smaller.

>> Dave Anglin is currently working on adding 64-bit userspace support
>> to gcc/glibc (dynamic loader), but that takes some time.
>> In the meantime a 64-bit nolibc would be cool for testing.
> 
> Nice. Do you have instructions to run the 64-bit kernel in QEMU?

As mentioned above, I think the "-machine C3700" should be sufficient.
Some more info is at: https://parisc.docs.kernel.org/en/latest/qemu.html

> Is qemu-user support planned?
32-bit qemu user works great and is used on many debian buildd machines.
64-bit is on my todo list, I just need time to do it :-)

Helge