On Mon, Jan 29, 2018 at 12:33 PM, Jim Wilson wrote:
> On Wed, Jan 24, 2018 at 3:47 PM, Richard Henderson
> wrote:
> > On 01/24/2018 10:58 AM, Jim Wilson wrote:
> >> Although, looking at this again, I see another statement in a
> >> different place that says:
> >>
> >> Except when otherwise state
On Wed, Jan 24, 2018 at 3:47 PM, Richard Henderson
wrote:
> On 01/24/2018 10:58 AM, Jim Wilson wrote:
>> Although, looking at this again, I see another statement in a
>> different place that says:
>>
>> Except when otherwise stated, if the result of a floating-point operation is
>> NaN, it is the
On 01/24/2018 10:58 AM, Jim Wilson wrote:
> I think that qemu is correct here, and that you want to use float32_chs.
Ok.
> Although, looking at this again, I see another statement in a
> different place that says:
>
> Except when otherwise stated, if the result of a floating-point operation is
>
On Tue, Jan 23, 2018 at 4:15 PM, Richard Henderson
wrote:
> Ok. Now it depends on what result you care about for madd specifically.
>
> If, like x86 and Power, fmsub returns the (silenced) original input NaN, you
> want the float_muladd_* flags.
>
> If, like ARM, fmsub returns the (silenced) nega
On Wed, Jan 24, 2018 at 8:16 AM, Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 01/23/2018 05:31 PM, Michael Clark wrote:
> > For the meantime we've greatly simplified cpu_mmu_index to just return
> the
> > processor mode as well as adding the processor mode to
> cpu_get_tb_cpu_stat
On 01/23/2018 05:31 PM, Michael Clark wrote:
> For the meantime we've greatly simplified cpu_mmu_index to just return the
> processor mode as well as adding the processor mode to cpu_get_tb_cpu_state
> flags. cpu_mmu_index previously returned a permutation of env->priv
> (containing
> processer mo
On Tue, Jan 23, 2018 at 3:35 PM, Michael Clark wrote:
> We want minimum number (minnum). It's been added to the draft spec and will
> be in riscv-spec-v2.3.pdf
In the preface of the draft, it says
• Defined the signed-zero behavior of FMIN.fmt and FMAX.fmt, and
changed their behavior on
signaling
On Tue, Jan 23, 2018 at 4:01 PM, Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 01/23/2018 01:37 PM, Michael Clark wrote:
> >
> >
> > On Wed, Jan 3, 2018 at 12:10 PM, Richard Henderson
> > mailto:richard.hender...@linaro.org>>
> wrote:
> >
> > On 01/02/2018 04:44 PM, Michael Cla
On 01/23/2018 03:15 PM, Michael Clark wrote:
> > +uint64_t helper_fmsub_s(CPURISCVState *env, uint64_t frs1, uint64_t
> frs2,
> > + uint64_t frs3, uint64_t rm)
> > +{
> > + require_fp;
> > + set_float_rounding_mode(RM, &env->fp_status);
> > +
On 01/23/2018 01:37 PM, Michael Clark wrote:
>
>
> On Wed, Jan 3, 2018 at 12:10 PM, Richard Henderson
> mailto:richard.hender...@linaro.org>> wrote:
>
> On 01/02/2018 04:44 PM, Michael Clark wrote:
> > +/* convert RISC-V rounding mode to IEEE library numbers */
> > +unsigned int ieee
On Tue, Jan 23, 2018 at 3:15 PM, Michael Clark wrote:
>
>
> On Wed, Jan 3, 2018 at 12:10 PM, Richard Henderson <
> richard.hender...@linaro.org> wrote:
>
>> On 01/02/2018 04:44 PM, Michael Clark wrote:
>> > +/* convert RISC-V rounding mode to IEEE library numbers */
>> > +unsigned int ieee_rm[] =
On Wed, Jan 3, 2018 at 12:10 PM, Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 01/02/2018 04:44 PM, Michael Clark wrote:
> > +/* convert RISC-V rounding mode to IEEE library numbers */
> > +unsigned int ieee_rm[] = {
>
> static const.
>
> > +/* obtain rm value to use in computation
On Wed, Jan 3, 2018 at 12:10 PM, Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 01/02/2018 04:44 PM, Michael Clark wrote:
> > +/* convert RISC-V rounding mode to IEEE library numbers */
> > +unsigned int ieee_rm[] = {
>
> static const.
Done.
> +/* obtain rm value to use in comput
On 01/02/2018 04:44 PM, Michael Clark wrote:
> +/* convert RISC-V rounding mode to IEEE library numbers */
> +unsigned int ieee_rm[] = {
static const.
> +/* obtain rm value to use in computation
> + * as the last step, convert rm codes to what the softfloat library expects
> + * Adapted from Spik
Helper routines for FPU instructions and NaN definitions.
Signed-off-by: Michael Clark
---
fpu/softfloat-specialize.h | 7 +-
target/riscv/fpu_helper.c | 591 +
2 files changed, 595 insertions(+), 3 deletions(-)
create mode 100644 target/riscv/fpu_
15 matches
Mail list logo
