diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2020-06-30 19:35:49 -0700 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2020-08-21 12:48:14 -0700 |
| commit | cc43c6925113c5bc8f1a0205375931d2e4807c99 (patch) | |
| tree | 756ac99bf25877985fb5e310aa2ef587fb9aaba8 /include/fpu | |
| parent | a7d479ee51c5911c93ee931efe4c2413b54c8756 (diff) | |
softfloat: make NO_SIGNALING_NANS runtime property
target/xtensa, the only user of NO_SIGNALING_NANS macro has FPU
implementations with and without the corresponding property. With
NO_SIGNALING_NANS being a macro they cannot be a part of the same QEMU
executable.
Replace macro with new property in float_status to allow cores with
different FPU implementations coexist.
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Alex Bennée" <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'include/fpu')
| -rw-r--r-- | include/fpu/softfloat-helpers.h | 5 | ||||
| -rw-r--r-- | include/fpu/softfloat-types.h | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index 735ed6b653..e842f83a12 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -95,6 +95,11 @@ static inline void set_snan_bit_is_one(bool val, float_status *status) status->snan_bit_is_one = val; } +static inline void set_no_signaling_nans(bool val, float_status *status) +{ + status->no_signaling_nans = val; +} + static inline bool get_float_detect_tininess(float_status *status) { return status->tininess_before_rounding; diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index 7680193ebc..d6f167c1b0 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -165,8 +165,13 @@ typedef struct float_status { /* should denormalised inputs go to zero and set the input_denormal flag? */ bool flush_inputs_to_zero; bool default_nan_mode; - /* not always used -- see snan_bit_is_one() in softfloat-specialize.h */ + /* + * The flags below are not used on all specializations and may + * constant fold away (see snan_bit_is_one()/no_signalling_nans() in + * softfloat-specialize.inc.c) + */ bool snan_bit_is_one; + bool no_signaling_nans; } float_status; #endif /* SOFTFLOAT_TYPES_H */ |