diff mbox series

[19/21] target/openrisc: Explicitly set 2-NaN propagation rule

Message ID 20241025141254.2141506-20-peter.maydell@linaro.org (mailing list archive)
State New
Headers show
Series softfloat: Set 2-NaN propagation rule in float_status, not at compile time | expand

Commit Message

Peter Maydell Oct. 25, 2024, 2:12 p.m. UTC 
Set the NaN propagation rule explicitly for the float_status word
used in the openrisc target.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/openrisc/cpu.c          | 6 ++++++
 fpu/softfloat-specialize.c.inc | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

Comments

Philippe Mathieu-Daudé Oct. 26, 2024, 4:40 a.m. UTC | #1 
On 25/10/24 11:12, Peter Maydell wrote:
> Set the NaN propagation rule explicitly for the float_status word
> used in the openrisc target.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>   target/openrisc/cpu.c          | 6 ++++++
>   fpu/softfloat-specialize.c.inc | 2 +-
>   2 files changed, 7 insertions(+), 1 deletion(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Richard Henderson Oct. 28, 2024, 12:26 p.m. UTC | #2 
On 10/25/24 15:12, Peter Maydell wrote:
> Set the NaN propagation rule explicitly for the float_status word
> used in the openrisc target.
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/openrisc/cpu.c          | 6 ++++++
>   fpu/softfloat-specialize.c.inc | 2 +-
>   2 files changed, 7 insertions(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 6ec54ad7a6c..b96561d1f26 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -105,6 +105,12 @@  static void openrisc_cpu_reset_hold(Object *obj, ResetType type)
 
     set_float_detect_tininess(float_tininess_before_rounding,
                               &cpu->env.fp_status);
+    /*
+     * TODO: this is probably not the correct NaN propagation rule for
+     * this architecture.
+     */
+    set_float_2nan_prop_rule(float_2nan_prop_x87, &cpu->env.fp_status);
+
 
 #ifndef CONFIG_USER_ONLY
     cpu->env.picmr = 0x00000000;
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index 40cbb1ab73b..ee5c73cad46 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -407,7 +407,7 @@  static int pickNaN(FloatClass a_cls, FloatClass b_cls,
     || defined(TARGET_S390X) || defined(TARGET_PPC) || defined(TARGET_M68K) \
     || defined(TARGET_SPARC) || defined(TARGET_XTENSA) \
     || defined(TARGET_I386) || defined(TARGET_ALPHA) \
-    || defined(TARGET_MICROBLAZE)
+    || defined(TARGET_MICROBLAZE) || defined(TARGET_OPENRISC)
         g_assert_not_reached();
 #else
         rule = float_2nan_prop_x87;