Re: [PATCH] add initial support for J2 core to sh target

On 02 Sep 2015, at 02:08, Rich Felker wrote: > On Wed, Sep 02, 2015 at 01:24:55AM +0900, Oleg Endo wrote: >>> I'm not sure what the best way to achieve multiple goals is, but the >>> current behavior makes it so you need --isa=any (and a final binary >>> with weird ABI tag) to

Re: [PATCH] add initial support for J2 core to sh target

On Wed, Sep 02, 2015 at 01:24:55AM +0900, Oleg Endo wrote: > > I'm not sure what the best way to achieve multiple goals is, but the > > current behavior makes it so you need --isa=any (and a final binary > > with weird ABI tag) to have a binary that supports atomic operations > > on any SH model.

Re: [PATCH] add initial support for J2 core to sh target

On 01 Sep 2015, at 23:18, Rich Felker wrote: > On Tue, Sep 01, 2015 at 10:45:10PM +0900, Oleg Endo wrote: >> It seems that this J2 atomic instruction(s ?) is not available to >> the public. I've skimmed through the currently available J2 hardware >> sources, but couldn't find

Re: [PATCH] add initial support for J2 core to sh target

Hi Rich, On 01 Sep 2015, at 02:49, Rich Felker wrote: > The J2 Core is an open hardware cpu implementing the SH-2 instruction > set, with the addition of barrel shift instructions and an atomic > compare-and-swap instruction. This patch adds a cpu model option -mj2 > to the sh

Re: [PATCH] add initial support for J2 core to sh target

On Tue, Sep 01, 2015 at 10:45:10PM +0900, Oleg Endo wrote: > Hi Rich, > > On 01 Sep 2015, at 02:49, Rich Felker wrote: > > > The J2 Core is an open hardware cpu implementing the SH-2 instruction > > set, with the addition of barrel shift instructions and an atomic > >

[PATCH] add initial support for J2 core to sh target

The J2 Core is an open hardware cpu implementing the SH-2 instruction set, with the addition of barrel shift instructions and an atomic compare-and-swap instruction. This patch adds a cpu model option -mj2 to the sh target. Presently all it does is enable use of the barrel shift instructions (and