Re: recent binutils and mips64-linux

["Zack Weinberg" <zack at codesourcery dot com>]

Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de> writes:

> Zack Weinberg wrote:
>> 
>> Maybe what you really want is an -mdata-model=kernel switch (or some
>> such spelling)
>
> Well, an ELF64 kernel loaded in the 64bit address space is also legal,
> and desireable on some (bigger) hardware. Btw, it would have to be
> -mtext-model=kernel, the data is the same. :-)

Well, you wouldn't compile such a kernel with that switch.  Maybe
spelling it -mtext-model=kseg0 would be more descriptive.

>> that tells gcc to do the right thing in the first place?
>
> Gcc still generates MIPS assembler macros, so such a switch would
> do nothing yet. Gcc should be changed to do the expansion itself
> (and improve code quality by that), but that's a much larger task.

Gcc can at least pass the setting along to the assembler (which would
have to grow such an option as well, either as a command line switch
or (preferred) a .directive).

zw