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[PATCH v2 for-10.0 24/54] target/i386: Set Float3NaNPropRule explicitly
From: |
Peter Maydell |
Subject: |
[PATCH v2 for-10.0 24/54] target/i386: Set Float3NaNPropRule explicitly |
Date: |
Mon, 2 Dec 2024 13:13:17 +0000 |
Set the Float3NaNPropRule explicitly for i386. We had no
i386-specific behaviour in the old ifdef ladder, so we were using the
default "prefer a then b then c" fallback; this is actually the
correct per-the-spec handling for i386.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
v1->v2: drop comment saying NaN rule is wrong.
---
target/i386/tcg/fpu_helper.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c
index a98b4f67ff0..c8bc5b7cfb3 100644
--- a/target/i386/tcg/fpu_helper.c
+++ b/target/i386/tcg/fpu_helper.c
@@ -180,6 +180,7 @@ void cpu_init_fp_statuses(CPUX86State *env)
* there are multiple input NaNs athey are selected in the order a, b, c.
*/
set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->sse_status);
+ set_float_3nan_prop_rule(float_3nan_prop_abc, &env->sse_status);
}
static inline uint8_t save_exception_flags(CPUX86State *env)
--
2.34.1
- [PATCH v2 for-10.0 16/54] tests/fp: Explicitly set 3-NaN propagation rule, (continued)
- [PATCH v2 for-10.0 16/54] tests/fp: Explicitly set 3-NaN propagation rule, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 48/54] target/s390x: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 07/54] target/ppc: Set FloatInfZeroNaNRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 31/54] target/m68k: Init local float_status from env fp_status in gdb get/set reg, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 39/54] target/alpha: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 18/54] target/loongarch: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 53/54] target/tricore: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 21/54] target/sparc: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 12/54] target/loongarch: Set FloatInfZeroNaNRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 42/54] target/m68k: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 24/54] target/i386: Set Float3NaNPropRule explicitly,
Peter Maydell <=
- [PATCH v2 for-10.0 51/54] target/hexagon: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 54/54] fpu: Remove default handling for dnan_pattern, Peter Maydell, 2024/12/02