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target/arm: Fix fp_status_f16 tininess before rounding
In commitd81ce0ef2c
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:d81ce0ef2c
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
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@ -324,6 +324,8 @@ static void arm_cpu_reset(CPUState *s)
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&env->vfp.fp_status);
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set_float_detect_tininess(float_tininess_before_rounding,
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&env->vfp.standard_fp_status);
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set_float_detect_tininess(float_tininess_before_rounding,
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&env->vfp.fp_status_f16);
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#ifndef CONFIG_USER_ONLY
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if (kvm_enabled()) {
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kvm_arm_reset_vcpu(cpu);
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