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Wed, 20 May 2026 10:18:40 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v5 26/30] fpu: Add accessors for rebias_{underflow,overflow} Date: Wed, 20 May 2026 10:18:16 -0700 Message-ID: <20260520171820.848839-27-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260520171820.848839-1-richard.henderson@linaro.org> References: <20260520171820.848839-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1779297630158154100 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- include/fpu/softfloat-helpers.h | 10 ++++++++++ target/ppc/cpu.c | 4 ++-- fpu/softfloat-parts.c.inc | 4 ++-- fpu/softfloat-specialize.c.inc | 10 ++++++++++ 4 files changed, 24 insertions(+), 4 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helper= s.h index 49e04ffee9..4791a7fc87 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -131,6 +131,16 @@ static inline void set_snan_rule(FloatSNaNRule val, fl= oat_status *status) status->float_snan_rule =3D val; } =20 +static inline void set_float_rebias_overflow(bool val, float_status *statu= s) +{ + status->rebias_overflow =3D val; +} + +static inline void set_float_rebias_underflow(bool val, float_status *stat= us) +{ + status->rebias_underflow =3D val; +} + static inline FloatRoundMode get_float_rounding_mode(const float_status *s= tatus) { return status->float_rounding_mode; diff --git a/target/ppc/cpu.c b/target/ppc/cpu.c index 4d8faaddee..41edb18643 100644 --- a/target/ppc/cpu.c +++ b/target/ppc/cpu.c @@ -248,8 +248,8 @@ void ppc_store_fpscr(CPUPPCState *env, target_ulong val) val |=3D FP_FEX; } env->fpscr =3D val; - env->fp_status.rebias_overflow =3D (FP_OE & env->fpscr) ? true : fals= e; - env->fp_status.rebias_underflow =3D (FP_UE & env->fpscr) ? true : fals= e; + set_float_rebias_overflow(FP_OE & env->fpscr, &env->fp_status); + set_float_rebias_underflow(FP_UE & env->fpscr, &env->fp_status); if (tcg_enabled()) { fpscr_set_rounding_mode(env); } diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index bef47a932d..184614ea47 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -358,7 +358,7 @@ static void partsN(uncanon_normal)(FloatPartsN *p, floa= t_status *s, switch (fmt->exp_max_kind) { case float_expmax_ieee: flags |=3D float_flag_overflow; - if (s->rebias_overflow) { + if (get_float_rebias_overflow(s)) { exp -=3D fmt->exp_re_bias; } else if (overflow_norm) { flags |=3D float_flag_inexact; @@ -398,7 +398,7 @@ static void partsN(uncanon_normal)(FloatPartsN *p, floa= t_status *s, } } fracN(shr)(p, frac_shift); - } else if (unlikely(s->rebias_underflow)) { + } else if (unlikely(get_float_rebias_underflow(s))) { flags |=3D float_flag_underflow; exp +=3D fmt->exp_re_bias; if (p->frac_lo & round_mask) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index c1ed661f5e..b97c971ae6 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -94,6 +94,16 @@ static inline uint8_t get_float_default_nan_pattern(cons= t float_status *status) return status->default_nan_pattern; } =20 +static inline bool get_float_rebias_overflow(const float_status *status) +{ + return status->rebias_overflow; +} + +static inline bool get_float_rebias_underflow(const float_status *status) +{ + return status->rebias_underflow; +} + /*------------------------------------------------------------------------= ---- | For the deconstructed floating-point with fraction FRAC, return true | if the fraction represents a signalling NaN; otherwise false. --=20 2.43.0