diff mbox series

[PULL,03/16] target/arm: Fix fp_status_f16 tininess before rounding

Message ID 20180515140707.15957-4-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/16] fpu/softfloat: int_to_float ensure r fully initialised | expand

Commit Message

Peter Maydell May 15, 2018, 2:06 p.m. UTC 
In commit d81ce0ef2c4f105 we added an extra float_status field
fp_status_fp16 for Arm, but forgot to initialize it correctly
by setting it to float_tininess_before_rounding. This currently
will only cause problems for the new V8_FP16 feature, since the
float-to-float conversion code doesn't use it yet. The effect
would be that we failed to set the Underflow IEEE exception flag
in all the cases where we should.

Add the missing initialization.

Fixes: d81ce0ef2c4f105
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180512004311.9299-16-richard.henderson@linaro.org
---
 target/arm/cpu.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index d175c5e94f..7939c6b8ae 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -324,6 +324,8 @@  static void arm_cpu_reset(CPUState *s)
                               &env->vfp.fp_status);
     set_float_detect_tininess(float_tininess_before_rounding,
                               &env->vfp.standard_fp_status);
+    set_float_detect_tininess(float_tininess_before_rounding,
+                              &env->vfp.fp_status_f16);
 #ifndef CONFIG_USER_ONLY
     if (kvm_enabled()) {
         kvm_arm_reset_vcpu(cpu);