I might be wrong here, but right now J in MISA is unused.
I think the J-letter extension is still a thing, but current extensions
like Zjpm and Zjid follow the Z ext scheme.
Do you think it should be removed?
пт, 5 янв. 2024 г. в 08:28, Alistair Francis <alistai...@gmail.com>:
> On Thu, Jan 4, 2024 at 4:58 AM Alexey Baturo <baturo.ale...@gmail.com>
> wrote:
> >
> > From: Alexey Baturo <baturo.ale...@gmail.com>
> >
> > Signed-off-by: Alexey Baturo <baturo.ale...@gmail.com>
> > ---
> > target/riscv/cpu.c | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index 1e6571ce99..13389ddc55 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -153,6 +153,9 @@ const RISCVIsaExtData isa_edata_arr[] = {
> > ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
> > ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
> > ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
> > + ISA_EXT_DATA_ENTRY(ssnpm, PRIV_VERSION_1_12_0, ext_ssnpm),
> > + ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_12_0, ext_smnpm),
> > + ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_12_0, ext_smmpm),
> > ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
> > ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
> > ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
> > @@ -1337,6 +1340,11 @@ const RISCVCPUMultiExtConfig
> riscv_cpu_extensions[] = {
> >
> > MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
> >
> > + /* Zjpm v0.8 extensions */
> > + MULTI_EXT_CFG_BOOL("ssnpm", ext_ssnpm, false),
> > + MULTI_EXT_CFG_BOOL("smnpm", ext_smnpm, false),
> > + MULTI_EXT_CFG_BOOL("smmpm", ext_smmpm, false),
>
> What happens to the existing J property?
>
>
> Alistair
>
> > +
> > MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
> > MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
> > MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
> > --
> > 2.34.1
> >
> >
>
