Re: [9fans] Arm Thumb compiler for Cortex-M

[Thaddeus Woskowiak <tswoskowiak@gmail.com>]

On Thu, Nov 5, 2020 at 7:12 PM Charles Forsyth
<charles.forsyth@gmail.com> wrote:
>
> There was a 5[ac] variant for Inferno (ta, tc) that produced Thumb code, and 5l could link Thumb and ARM32 code.
> That wasn't extended once Thumb-2 was issued, since it was different enough to require a fair amount of work and we had no immediate application on the Cortex.
>
>
> On Thu, Nov 5, 2020 at 11:38 PM Thaddeus Woskowiak <tswoskowiak@gmail.com> wrote:
>>
>> I would like to know if anyone is working on or exists an Arm Thumb
>> compiler so one could use plan 9 to program Arm Cortex M0/3/4/7
>> microcontrollers directly. I know of Charles Forsyth's xc AVR compiler
>> which is also interesting. Though I have yet to try it out.
>>
>> -taw
>>
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Charles, Thank you for the information. So Thumb compiling and
assembly is handled by tc and ta respectively while 5l can handle
linking both thumb code and arm 32.

I guess my next question is: does this mean Inferno can run on certain
Cortex-M micros since it can run MMU-less? (provided enough memory of
course) And has this been done before?