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| author | Peter Maydell <peter.maydell@linaro.org> | 2024-11-05 10:09:54 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2024-11-05 10:09:54 +0000 |
| commit | 1bb5257def132090bdff2cd1352841915553aaaf (patch) | |
| tree | d3b60550d31c97b1549eb77ec0991f16fe927a06 | |
| parent | 0c587f13397a306f7ad4f8b0b7cb9184488012b5 (diff) | |
| download | qemu-1bb5257def132090bdff2cd1352841915553aaaf.zip qemu-1bb5257def132090bdff2cd1352841915553aaaf.tar.gz qemu-1bb5257def132090bdff2cd1352841915553aaaf.tar.bz2 | |
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
| -rw-r--r-- | fpu/softfloat-specialize.c.inc | 6 | ||||
| -rw-r--r-- | target/loongarch/tcg/fpu_helper.c | 1 |
2 files changed, 4 insertions, 3 deletions
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index c60b999..bbc3b70 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -402,10 +402,10 @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, /* target didn't set the rule: fall back to old ifdef choices */ #if defined(TARGET_AVR) || defined(TARGET_HEXAGON) \ || defined(TARGET_RISCV) || defined(TARGET_SH4) \ - || defined(TARGET_TRICORE) || defined(TARGET_ARM) || defined(TARGET_MIPS) + || defined(TARGET_TRICORE) || defined(TARGET_ARM) || defined(TARGET_MIPS) \ + || defined(TARGET_LOONGARCH64) g_assert_not_reached(); -#elif defined(TARGET_HPPA) || \ - defined(TARGET_LOONGARCH64) || defined(TARGET_S390X) +#elif defined(TARGET_HPPA) || defined(TARGET_S390X) rule = float_2nan_prop_s_ab; #elif defined(TARGET_PPC) || defined(TARGET_M68K) /* diff --git a/target/loongarch/tcg/fpu_helper.c b/target/loongarch/tcg/fpu_helper.c index f6753c5..21bc3b0 100644 --- a/target/loongarch/tcg/fpu_helper.c +++ b/target/loongarch/tcg/fpu_helper.c @@ -31,6 +31,7 @@ void restore_fp_status(CPULoongArchState *env) set_float_rounding_mode(ieee_rm[(env->fcsr0 >> FCSR0_RM) & 0x3], &env->fp_status); set_flush_to_zero(0, &env->fp_status); + set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status); } int ieee_ex_to_loongarch(int xcpt) |