Re: e500 core lacks lswi, lswx, stswi, and stswx instructions.

Matt Thomas <[email protected]> Mon, 19 Jan 2015 06:34:05 -0800

Newsgroups	gmane.os.netbsd.ports.powerpc
Message-ID	<[email protected]>

> On Jan 19, 2015, at 1:15 AM, Frank Wille <[email protected]> wrote:
> 
> On Mon, 19 Jan 2015 17:37:55 +0900
> NONAKA Kimihiro <[email protected]> wrote:
> 
>> | arithmetic, logical, load/store, and branch) are supported on e500
>> except lswi, lswx, stswi, and stswx.
>> 
>> I seem those instructions are generated by gcc -Os.
>> It causes installer and /rescue programs don't work.
>> 
>> Do we need emulation of those instructions?
>> Any ideas?
> 
> Maybe you can switch gcc into e500 mode?
> Does it work with -mcpu=8540 (e500v1) or -mcpu=8548 (e500v2) ?

Easier just to add -mno-string so GCC doesn't use them.