diff options
Diffstat (limited to 'target/mips/fpu_helper.h')
| -rw-r--r-- | target/mips/fpu_helper.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/target/mips/fpu_helper.h b/target/mips/fpu_helper.h index 1c2d6d35a7..ad1116e8c1 100644 --- a/target/mips/fpu_helper.h +++ b/target/mips/fpu_helper.h @@ -27,8 +27,14 @@ static inline void restore_flush_mode(CPUMIPSState *env) static inline void restore_snan_bit_mode(CPUMIPSState *env) { - set_snan_bit_is_one((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) == 0, - &env->active_fpu.fp_status); + bool nan2008 = env->active_fpu.fcr31 & (1 << FCR31_NAN2008); + + /* + * With nan2008, SNaNs are silenced in the usual way. + * Before that, SNaNs are not silenced; default nans are produced. + */ + set_snan_bit_is_one(!nan2008, &env->active_fpu.fp_status); + set_default_nan_mode(!nan2008, &env->active_fpu.fp_status); } static inline void restore_fp_status(CPUMIPSState *env) |