{"id":2234621,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2234621/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260507221717.486023-18-richard.henderson@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260507221717.486023-18-richard.henderson@linaro.org>","list_archive_url":null,"date":"2026-05-07T22:17:16","name":"[17/18] fpu: Add accessors for rebias_{underflow,overflow}","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"fcdfbfe99bb9a1e3cc88790f22af6fac74724dce","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/1.2/people/72104/?format=json","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260507221717.486023-18-richard.henderson@linaro.org/mbox/","series":[{"id":503289,"url":"http://patchwork.ozlabs.org/api/1.2/series/503289/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=503289","date":"2026-05-07T22:16:59","name":"fpu: Compress float_status","version":1,"mbox":"http://patchwork.ozlabs.org/series/503289/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2234621/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2234621/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=Uu8Y43q2;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-oa1-x34.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Signed-off-by: Richard Henderson \n---\n include/fpu/softfloat-helpers.h | 10 ++++++++++\n target/ppc/cpu.c | 4 ++--\n fpu/softfloat-parts.c.inc | 4 ++--\n fpu/softfloat-specialize.c.inc | 10 ++++++++++\n 4 files changed, 24 insertions(+), 4 deletions(-)","diff":"diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h\nindex 49e04ffee9..4791a7fc87 100644\n--- a/include/fpu/softfloat-helpers.h\n+++ b/include/fpu/softfloat-helpers.h\n@@ -131,6 +131,16 @@ static inline void set_snan_rule(FloatSNaNRule val, float_status *status)\n status->float_snan_rule = val;\n }\n \n+static inline void set_float_rebias_overflow(bool val, float_status *status)\n+{\n+ status->rebias_overflow = val;\n+}\n+\n+static inline void set_float_rebias_underflow(bool val, float_status *status)\n+{\n+ status->rebias_underflow = val;\n+}\n+\n static inline FloatRoundMode get_float_rounding_mode(const float_status *status)\n {\n return status->float_rounding_mode;\ndiff --git a/target/ppc/cpu.c b/target/ppc/cpu.c\nindex 4d8faaddee..41edb18643 100644\n--- a/target/ppc/cpu.c\n+++ b/target/ppc/cpu.c\n@@ -248,8 +248,8 @@ void ppc_store_fpscr(CPUPPCState *env, target_ulong val)\n val |= FP_FEX;\n }\n env->fpscr = val;\n- env->fp_status.rebias_overflow = (FP_OE & env->fpscr) ? true : false;\n- env->fp_status.rebias_underflow = (FP_UE & env->fpscr) ? true : false;\n+ set_float_rebias_overflow(FP_OE & env->fpscr, &env->fp_status);\n+ set_float_rebias_underflow(FP_UE & env->fpscr, &env->fp_status);\n if (tcg_enabled()) {\n fpscr_set_rounding_mode(env);\n }\ndiff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc\nindex 5598c8b44a..2198841f05 100644\n--- a/fpu/softfloat-parts.c.inc\n+++ b/fpu/softfloat-parts.c.inc\n@@ -368,7 +368,7 @@ static void partsN(uncanon_normal)(FloatPartsN *p, float_status *s,\n switch (fmt->exp_max_kind) {\n case float_expmax_ieee:\n flags |= float_flag_overflow;\n- if (s->rebias_overflow) {\n+ if (get_float_rebias_overflow(s)) {\n exp -= fmt->exp_re_bias;\n } else if (overflow_norm) {\n flags |= float_flag_inexact;\n@@ -408,7 +408,7 @@ static void partsN(uncanon_normal)(FloatPartsN *p, float_status *s,\n }\n }\n fracN(shr)(p, frac_shift);\n- } else if (unlikely(s->rebias_underflow)) {\n+ } else if (unlikely(get_float_rebias_underflow(s))) {\n flags |= float_flag_underflow;\n exp += fmt->exp_re_bias;\n if (p->frac_lo & round_mask) {\ndiff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc\nindex fe56cb7c7a..d9bea064e3 100644\n--- a/fpu/softfloat-specialize.c.inc\n+++ b/fpu/softfloat-specialize.c.inc\n@@ -94,6 +94,16 @@ static inline uint8_t get_float_default_nan_pattern(const float_status *status)\n return status->default_nan_pattern;\n }\n \n+static inline bool get_float_rebias_overflow(const float_status *status)\n+{\n+ return status->rebias_overflow;\n+}\n+\n+static inline bool get_float_rebias_underflow(const float_status *status)\n+{\n+ return status->rebias_underflow;\n+}\n+\n /*----------------------------------------------------------------------------\n | For the deconstructed floating-point with fraction FRAC, return true\n | if the fraction represents a signalling NaN; otherwise false.\n","prefixes":["17/18"]}