mirror of https://github.com/xemu-project/xemu.git
target/loongarch: Explicitly set 2-NaN propagation rule
Set the 2-NaN propagation rule explicitly in the float_status word we use. (There are a couple of places in fpu_helper.c where we create a dummy float_status word with "float_status *s = { };", but these are only used for calling float*_is_quiet_nan() so it doesn't matter that we don't set a 2-NaN propagation rule there.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241025141254.2141506-6-peter.maydell@linaro.org
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@ -402,10 +402,10 @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls,
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/* target didn't set the rule: fall back to old ifdef choices */
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/* target didn't set the rule: fall back to old ifdef choices */
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#if defined(TARGET_AVR) || defined(TARGET_HEXAGON) \
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#if defined(TARGET_AVR) || defined(TARGET_HEXAGON) \
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|| defined(TARGET_RISCV) || defined(TARGET_SH4) \
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|| defined(TARGET_RISCV) || defined(TARGET_SH4) \
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|| defined(TARGET_TRICORE) || defined(TARGET_ARM) || defined(TARGET_MIPS)
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|| defined(TARGET_TRICORE) || defined(TARGET_ARM) || defined(TARGET_MIPS) \
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|| defined(TARGET_LOONGARCH64)
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g_assert_not_reached();
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g_assert_not_reached();
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#elif defined(TARGET_HPPA) || \
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#elif defined(TARGET_HPPA) || defined(TARGET_S390X)
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defined(TARGET_LOONGARCH64) || defined(TARGET_S390X)
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rule = float_2nan_prop_s_ab;
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rule = float_2nan_prop_s_ab;
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#elif defined(TARGET_PPC) || defined(TARGET_M68K)
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#elif defined(TARGET_PPC) || defined(TARGET_M68K)
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/*
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/*
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@ -31,6 +31,7 @@ void restore_fp_status(CPULoongArchState *env)
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set_float_rounding_mode(ieee_rm[(env->fcsr0 >> FCSR0_RM) & 0x3],
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set_float_rounding_mode(ieee_rm[(env->fcsr0 >> FCSR0_RM) & 0x3],
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&env->fp_status);
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&env->fp_status);
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set_flush_to_zero(0, &env->fp_status);
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set_flush_to_zero(0, &env->fp_status);
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set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status);
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}
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}
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int ieee_ex_to_loongarch(int xcpt)
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int ieee_ex_to_loongarch(int xcpt)
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