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[PATCH v2 for-10.0 07/54] target/ppc: Set FloatInfZeroNaNRule explicitly
From: |
Peter Maydell |
Subject: |
[PATCH v2 for-10.0 07/54] target/ppc: Set FloatInfZeroNaNRule explicitly |
Date: |
Mon, 2 Dec 2024 13:13:00 +0000 |
Set the FloatInfZeroNaNRule explicitly for the PPC target,
so we can remove the ifdef from pickNaNMulAdd().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/ppc/cpu_init.c | 7 +++++++
fpu/softfloat-specialize.c.inc | 7 +------
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index efcb80d1c25..f18908a643a 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -7270,6 +7270,13 @@ static void ppc_cpu_reset_hold(Object *obj, ResetType
type)
*/
set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status);
set_float_2nan_prop_rule(float_2nan_prop_ab, &env->vec_status);
+ /*
+ * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer
+ * to return an input NaN if we have one (ie c) rather than generating
+ * a default NaN
+ */
+ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status);
+ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->vec_status);
for (i = 0; i < ARRAY_SIZE(env->spr_cb); i++) {
ppc_spr_t *spr = &env->spr_cb[i];
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index db914ddbb1c..2023b2bd632 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -503,18 +503,13 @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass
b_cls, FloatClass c_cls,
*/
rule = float_infzeronan_dnan_never;
}
-#elif defined(TARGET_PPC) || defined(TARGET_SPARC) || \
+#elif defined(TARGET_SPARC) || \
defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \
defined(TARGET_I386) || defined(TARGET_LOONGARCH)
/*
* For LoongArch systems that conform to IEEE754-2008, the
(inf,zero,nan)
* case sets InvalidOp and returns the input value 'c'
*/
- /*
- * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer
- * to return an input NaN if we have one (ie c) rather than generating
- * a default NaN
- */
rule = float_infzeronan_dnan_never;
#endif
}
--
2.34.1
- [PATCH v2 for-10.0 34/54] fpu: Allow runtime choice of default NaN value, (continued)
- [PATCH v2 for-10.0 34/54] fpu: Allow runtime choice of default NaN value, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 11/54] target/x86: Set FloatInfZeroNaNRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 36/54] target/microblaze: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 38/54] target/hppa: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 28/54] softfloat: Create floatx80 default NaN from parts64_default_nan, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 19/54] target/ppc: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 43/54] target/mips: Set default NaN pattern explicitly, Peter Maydell, 2024/12/02
- [PATCH v2 for-10.0 13/54] target/hppa: Set FloatInfZeroNaNRule explicitly, Peter Maydell, 2024/12/02
- [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 <=
- [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, 2024/12/02
- [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