Re: [Tinycc-devel] rv32 support in tcc

[rempas]

27 Φεβ 2022, 17:49 Από eligis@orange.fr:

> No, riscv64 is for 64bit only.
> I'm not aware of riscv32 32bit porting efforts but someone is perhaps busy 
> working on it.
>
> C.
>
> -----Original Message-----
> From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange.fr@nongnu.org] 
> On Behalf Of Sagar Acharya via Tinycc-devel
> Sent: Sunday, February 27, 2022 11:59
> To: tinycc-devel@nongnu.org
> Cc: Sagar Acharya
> Subject: [Tinycc-devel] rv32 support in tcc
>
> Hello folks,
> I saw tcc and there are a few riscv64 files in the project. README states 
> that they would be used for compiling on a riscv64 system. I need a compiler 
> that could compile for riscv32. Can tinycc do that currently?
>
> If not, are there any plans to introduce rv32 compilation?
>
> Thanks for the fantastic project
>
> Sagar Acharya
>
I would add that even if someone is not working on it, it may be possible (and 
when saying possible I mean, not a pain in the ass) to make one because while I 
couldn't find a reference to it, I suppose that both 32-bit and 64-bit versions 
of RISC-V were created simultaneously as RISC-V was designed in an era were 
32-bit computers were there.

With that in mind, I suppose that the differences between these two will be the 
length of the registers. So someone should be able to modify the TCC's 
"RISC-V64" version and make it support the 32-bit RISC-V with a couple of 
changes to both the backend and in the frontend (I suppose things like 
disabling 8-byte types for example).

Any thoughts on that one?