aboutsummaryrefslogtreecommitdiff
path: root/target
diff options
context:
space:
mode:
authorPeter Maydell <peter.maydell@linaro.org>2024-12-11 15:30:53 +0000
committerPeter Maydell <peter.maydell@linaro.org>2024-12-11 15:30:53 +0000
commitf7892f9c0094c911e5f3ad03072130caf9a1db52 (patch)
tree4611ae39afb551619d92cbd4757f97799d7be33a /target
parent27aedf7d25e148089bb54eb80588bd380483cbe5 (diff)
downloadqemu-f7892f9c0094c911e5f3ad03072130caf9a1db52.zip
qemu-f7892f9c0094c911e5f3ad03072130caf9a1db52.tar.gz
qemu-f7892f9c0094c911e5f3ad03072130caf9a1db52.tar.bz2
target/arm: Set FloatInfZeroNaNRule explicitly
Set the FloatInfZeroNaNRule explicitly for the Arm 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> Message-id: 20241202131347.498124-6-peter.maydell@linaro.org
Diffstat (limited to 'target')
-rw-r--r--target/arm/cpu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 6938161..ead3979 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -173,11 +173,14 @@ void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook,
* * tininess-before-rounding
* * 2-input NaN propagation prefers SNaN over QNaN, and then
* operand A over operand B (see FPProcessNaNs() pseudocode)
+ * * 0 * Inf + NaN returns the default NaN if the input NaN is quiet,
+ * and the input NaN if it is signalling
*/
static void arm_set_default_fp_behaviours(float_status *s)
{
set_float_detect_tininess(float_tininess_before_rounding, s);
set_float_2nan_prop_rule(float_2nan_prop_s_ab, s);
+ set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, s);
}
static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)