Re: [RFC PATCH v3 1/5] ppc64: Add semihosting support

[Leandro Lupori]

On 4/19/22 06:26, Peter Maydell wrote:
On Mon, 18 Apr 2022 at 20:15, Leandro Lupori
<leandro.lup...@eldorado.org.br> wrote:

Add semihosting support for PPC64. This implementation is
based on the standard for ARM semihosting version 2.0, as
implemented by QEMU and documented in

     https://github.com/ARM-software/abi-aa/releases

The PPC64 specific differences are the following:

Semihosting Trap Instruction: sc 7
Operation Number Register: r3
Parameter Register: r4
Return Register: r3
Data block field size: 64 bits

Where is the independent specification which defines that
this is the ABI for PPC semihosting? You should provide the
URL for that in a comment somewhere.


AFAIK, there is no official PPC semihosting specification. Would it be 
ok to just document it somewhere else, e.g. GitHub, as an unofficial 
specification?

Thanks,
Leandro

thanks
-- PMM