{"id":2228420,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2228420/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260426134002.865628-32-richard.henderson@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/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":""},"msgid":"<20260426134002.865628-32-richard.henderson@linaro.org>","date":"2026-04-26T13:39:08","name":"[31/84] fpu: Constify frac{64,128,256}_* inputs","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c177d6ce2b640ab2cdc94fc8cebb210fdd322fc8","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/1.1/people/72104/?format=json","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260426134002.865628-32-richard.henderson@linaro.org/mbox/","series":[{"id":501533,"url":"http://patchwork.ozlabs.org/api/1.1/series/501533/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501533","date":"2026-04-26T13:38:37","name":"fpu: Export some internals for targets","version":1,"mbox":"http://patchwork.ozlabs.org/series/501533/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228420/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228420/checks/","tags":{},"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=Kf2WVgWn;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g3Sh24kdnz1y2d\n\tfor ; Sun, 26 Apr 2026 23:48:02 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wGzjz-00006j-6I; Sun, 26 Apr 2026 09:41:45 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1wGzjr-0008OX-5J\n for qemu-devel@nongnu.org; Sun, 26 Apr 2026 09:41:36 -0400","from mail-pg1-x532.google.com ([2607:f8b0:4864:20::532])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from )\n id 1wGzjn-0000FQ-81\n for qemu-devel@nongnu.org; Sun, 26 Apr 2026 09:41:33 -0400","by mail-pg1-x532.google.com with SMTP id\n 41be03b00d2f7-c798fc1a28cso2787943a12.3\n for ; Sun, 26 Apr 2026 06:41:30 -0700 (PDT)","from stoup.. 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","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 fpu/softfloat.c | 53 +++++++++++++++++++++++++++++--------------------\n 1 file changed, 31 insertions(+), 22 deletions(-)","diff":"diff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex e462fb7d74..6cca31af30 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -774,12 +774,14 @@ static float128 QEMU_FLATTEN float128_pack_raw(const FloatParts128 *p)\n * Helper functions for softfloat-parts.c.inc, per-size operations.\n */\n \n-static bool frac64_add(FloatParts64 *r, FloatParts64 *a, FloatParts64 *b)\n+static bool frac64_add(FloatParts64 *r,\n+ const FloatParts64 *a, const FloatParts64 *b)\n {\n return uadd64_overflow(a->frac, b->frac, &r->frac);\n }\n \n-static bool frac128_add(FloatParts128 *r, FloatParts128 *a, FloatParts128 *b)\n+static bool frac128_add(FloatParts128 *r,\n+ const FloatParts128 *a, const FloatParts128 *b)\n {\n bool c = 0;\n r->frac_lo = uadd64_carry(a->frac_lo, b->frac_lo, &c);\n@@ -787,7 +789,8 @@ static bool frac128_add(FloatParts128 *r, FloatParts128 *a, FloatParts128 *b)\n return c;\n }\n \n-static bool frac256_add(FloatParts256 *r, FloatParts256 *a, FloatParts256 *b)\n+static bool frac256_add(FloatParts256 *r,\n+ const FloatParts256 *a, const FloatParts256 *b)\n {\n bool c = 0;\n r->frac_lo = uadd64_carry(a->frac_lo, b->frac_lo, &c);\n@@ -797,12 +800,12 @@ static bool frac256_add(FloatParts256 *r, FloatParts256 *a, FloatParts256 *b)\n return c;\n }\n \n-static bool frac64_addi(FloatParts64 *r, FloatParts64 *a, uint64_t c)\n+static bool frac64_addi(FloatParts64 *r, const FloatParts64 *a, uint64_t c)\n {\n return uadd64_overflow(a->frac, c, &r->frac);\n }\n \n-static bool frac128_addi(FloatParts128 *r, FloatParts128 *a, uint64_t c)\n+static bool frac128_addi(FloatParts128 *r, const FloatParts128 *a, uint64_t c)\n {\n c = uadd64_overflow(a->frac_lo, c, &r->frac_lo);\n return uadd64_overflow(a->frac_hi, c, &r->frac_hi);\n@@ -818,14 +821,14 @@ static void frac128_allones(FloatParts128 *a)\n a->frac_hi = a->frac_lo = -1;\n }\n \n-static FloatRelation frac64_cmp(FloatParts64 *a, FloatParts64 *b)\n+static FloatRelation frac64_cmp(const FloatParts64 *a, const FloatParts64 *b)\n {\n return (a->frac == b->frac ? float_relation_equal\n : a->frac < b->frac ? float_relation_less\n : float_relation_greater);\n }\n \n-static FloatRelation frac128_cmp(FloatParts128 *a, FloatParts128 *b)\n+static FloatRelation frac128_cmp(const FloatParts128 *a, const FloatParts128 *b)\n {\n uint64_t ta = a->frac_hi, tb = b->frac_hi;\n if (ta == tb) {\n@@ -847,7 +850,7 @@ static void frac128_clear(FloatParts128 *a)\n a->frac_hi = a->frac_lo = 0;\n }\n \n-static bool frac64_div(FloatParts64 *a, FloatParts64 *b)\n+static bool frac64_div(FloatParts64 *a, const FloatParts64 *b)\n {\n uint64_t n1, n0, r, q;\n bool ret;\n@@ -879,7 +882,7 @@ static bool frac64_div(FloatParts64 *a, FloatParts64 *b)\n return ret;\n }\n \n-static bool frac128_div(FloatParts128 *a, FloatParts128 *b)\n+static bool frac128_div(FloatParts128 *a, const FloatParts128 *b)\n {\n uint64_t q0, q1, a0, a1, b0, b1;\n uint64_t r0, r1, r2, r3, t0, t1, t2, t3;\n@@ -926,22 +929,24 @@ static bool frac128_div(FloatParts128 *a, FloatParts128 *b)\n return ret;\n }\n \n-static bool frac64_eqz(FloatParts64 *a)\n+static bool frac64_eqz(const FloatParts64 *a)\n {\n return a->frac == 0;\n }\n \n-static bool frac128_eqz(FloatParts128 *a)\n+static bool frac128_eqz(const FloatParts128 *a)\n {\n return (a->frac_hi | a->frac_lo) == 0;\n }\n \n-static void frac64_mulw(FloatParts128 *r, FloatParts64 *a, FloatParts64 *b)\n+static void frac64_mulw(FloatParts128 *r,\n+ const FloatParts64 *a, const FloatParts64 *b)\n {\n mulu64(&r->frac_lo, &r->frac_hi, a->frac, b->frac);\n }\n \n-static void frac128_mulw(FloatParts256 *r, FloatParts128 *a, FloatParts128 *b)\n+static void frac128_mulw(FloatParts256 *r,\n+ const FloatParts128 *a, const FloatParts128 *b)\n {\n mul128To256(a->frac_hi, a->frac_lo, b->frac_hi, b->frac_lo,\n &r->frac_hi, &r->frac_hm, &r->frac_lm, &r->frac_lo);\n@@ -1041,7 +1046,8 @@ static int frac256_normalize(FloatParts256 *a)\n return ret;\n }\n \n-static void frac64_modrem(FloatParts64 *a, FloatParts64 *b, uint64_t *mod_quot)\n+static void frac64_modrem(FloatParts64 *a, const FloatParts64 *b,\n+ uint64_t *mod_quot)\n {\n uint64_t a0, a1, b0, t0, t1, q, quot;\n int exp_diff = a->exp - b->exp;\n@@ -1124,7 +1130,7 @@ static void frac64_modrem(FloatParts64 *a, FloatParts64 *b, uint64_t *mod_quot)\n a->frac = a0 | (a1 != 0);\n }\n \n-static void frac128_modrem(FloatParts128 *a, FloatParts128 *b,\n+static void frac128_modrem(FloatParts128 *a, const FloatParts128 *b,\n uint64_t *mod_quot)\n {\n uint64_t a0, a1, a2, b0, b1, t0, t1, t2, q, quot;\n@@ -1353,12 +1359,14 @@ static void frac256_shrjam(FloatParts256 *a, int c)\n a->frac_hi = a0;\n }\n \n-static bool frac64_sub(FloatParts64 *r, FloatParts64 *a, FloatParts64 *b)\n+static bool frac64_sub(FloatParts64 *r,\n+ const FloatParts64 *a, const FloatParts64 *b)\n {\n return usub64_overflow(a->frac, b->frac, &r->frac);\n }\n \n-static bool frac128_sub(FloatParts128 *r, FloatParts128 *a, FloatParts128 *b)\n+static bool frac128_sub(FloatParts128 *r,\n+ const FloatParts128 *a, const FloatParts128 *b)\n {\n bool c = 0;\n r->frac_lo = usub64_borrow(a->frac_lo, b->frac_lo, &c);\n@@ -1366,7 +1374,8 @@ static bool frac128_sub(FloatParts128 *r, FloatParts128 *a, FloatParts128 *b)\n return c;\n }\n \n-static bool frac256_sub(FloatParts256 *r, FloatParts256 *a, FloatParts256 *b)\n+static bool frac256_sub(FloatParts256 *r,\n+ const FloatParts256 *a, const FloatParts256 *b)\n {\n bool c = 0;\n r->frac_lo = usub64_borrow(a->frac_lo, b->frac_lo, &c);\n@@ -1376,24 +1385,24 @@ static bool frac256_sub(FloatParts256 *r, FloatParts256 *a, FloatParts256 *b)\n return c;\n }\n \n-static void frac64_truncjam(FloatParts64 *r, FloatParts128 *a)\n+static void frac64_truncjam(FloatParts64 *r, const FloatParts128 *a)\n {\n r->frac = a->frac_hi | (a->frac_lo != 0);\n }\n \n-static void frac128_truncjam(FloatParts128 *r, FloatParts256 *a)\n+static void frac128_truncjam(FloatParts128 *r, const FloatParts256 *a)\n {\n r->frac_hi = a->frac_hi;\n r->frac_lo = a->frac_hm | ((a->frac_lm | a->frac_lo) != 0);\n }\n \n-static void frac64_widen(FloatParts128 *r, FloatParts64 *a)\n+static void frac64_widen(FloatParts128 *r, const FloatParts64 *a)\n {\n r->frac_hi = a->frac;\n r->frac_lo = 0;\n }\n \n-static void frac128_widen(FloatParts256 *r, FloatParts128 *a)\n+static void frac128_widen(FloatParts256 *r, const FloatParts128 *a)\n {\n r->frac_hi = a->frac_hi;\n r->frac_hm = a->frac_lo;\n","prefixes":["31/84"]}