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target/m68k: Set default NaN pattern explicitly

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Set the default NaN pattern explicitly for m68k.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241202131347.498124-43-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2024-12-11 15:31:06 +00:00
parent 7d582aa7cc
commit 34f73db53d
2 changed files with 3 additions and 1 deletions
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2
fpu/softfloat-specialize.c.inc
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@ -136,7 +136,7 @@ static void parts64_default_nan(FloatParts64 *p, float_status *status)
uint8_t dnan_pattern = status->default_nan_pattern; uint8_t dnan_pattern = status->default_nan_pattern;
if (dnan_pattern == 0) { if (dnan_pattern == 0) {
#if defined(TARGET_SPARC) || defined(TARGET_M68K) #if defined(TARGET_SPARC)
/* Sign bit clear, all frac bits set */ /* Sign bit clear, all frac bits set */
dnan_pattern = 0b01111111; dnan_pattern = 0b01111111;
#elif defined(TARGET_HEXAGON) #elif defined(TARGET_HEXAGON)

2
target/m68k/cpu.c
View file

@ -105,6 +105,8 @@ static void m68k_cpu_reset_hold(Object *obj, ResetType type)
* preceding paragraph for nonsignaling NaNs. * preceding paragraph for nonsignaling NaNs.
*/ */
set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status);
/* Default NaN: sign bit clear, all frac bits set */
set_float_default_nan_pattern(0b01111111, &env->fp_status);
nan = floatx80_default_nan(&env->fp_status); nan = floatx80_default_nan(&env->fp_status);
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++) {