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([2602:ae:1598:4c01:35a2:c45d:7485:f488]) by smtp.gmail.com with ESMTPSA id g18-20020a63fa52000000b0051f14839bf3sm9128496pgk.34.2023.05.30.12.00.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 12:00:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1685473201; x=1688065201; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=alUoCrNxLlSLGgJuIyIfT1FvZkAeWBPMCr4vG57zR6w=; b=JusTvAAtF2NPddoLjBme6rsVpKAc8g6+WyWQaOWRZ1EGPq6B61+6yA/VF1xFZPc7S9 BzW27NRLsUgCVh31jP15QrEE7Ctmfzprx+iKLX8godxEkDbyfX3+NvXLwiqgfYiwrzOf mmfYe/e+9ujazP0F75crzA5yo4TeKnuUlPxyMnyFFR2GJmtBHe1YA0SHWvHAfTMu1eb+ KZZGyMRxAKHd1eYfSn3h8Kxe65hMAjY4Cjh9L6Ef0yRDDvgoRTAlZs4yQey0pHKUhXA2 mFdz666al1sYDuFTgwVtQAaPGClpOrxo5yf36T98q/HPYlXvnQO6o/OICLkKrWv4M7x6 qEdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685473201; x=1688065201; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=alUoCrNxLlSLGgJuIyIfT1FvZkAeWBPMCr4vG57zR6w=; b=d6pefoF/CRfWtYioTrRRa4sLzDRg2r9KTsbsxRAuhIXuwpl1hfwR/2wmg6hiB1hJ5v MGoBvj0Qb7XETcXCiv5jEEPqePPcIcM3cceP19677LkSb9CBzwvF0wZr4Fu0igkVBGPR nXsd+3jujg/fFceP+EtiGlCiJMa+wsOJEz/TzPeCvXmY7C4xUVn3syodvl5hFIOtERbj 8QW5sbOpMQODRHrK2BUz/oJRNmn2D7ZYwg/cW4nBEMvD59nYal1c0chI22aoR3cQyntM GLT2UTcb10lQz1kvLL8/VgCC+swU7SfmC1E+54Z2vd/Jee1DzI9DuzMTDXe2A2VVsMEM fRIw== X-Gm-Message-State: AC+VfDxwzxOGBdRl5LGJNpk4eecUoWmqemmeEl9E0sxSl1taf0bPsBS1 j6qt2Plo01CYohFWjwoAwuIgd9TGth8YsSiS/+M= X-Google-Smtp-Source: ACHHUZ7QPVTz1VAbDC8bNiT+zNDCFWsrMkMqCP0oBa/ekzhKyd8JmAesFZZDBD6UFZ/Y1JRGKQxl3g== X-Received: by 2002:a05:6a21:339a:b0:105:dafa:fec2 with SMTP id yy26-20020a056a21339a00b00105dafafec2mr3862395pzb.53.1685473200893; Tue, 30 May 2023 12:00:00 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Peter Maydell Subject: [PULL 12/27] accel/tcg: Extract load_atom_extract_al16_or_al8 to host header Date: Tue, 30 May 2023 11:59:34 -0700 Message-Id: <20230530185949.410208-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230530185949.410208-1-richard.henderson@linaro.org> References: <20230530185949.410208-1-richard.henderson@linaro.org> MIME-Version: 1.0 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=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42d; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42d.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, T_SCC_BODY_TEXT_LINE=-0.01 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: 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: 1685473615002100019 Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- .../generic/host/load-extract-al16-al8.h | 45 +++++++++++++++++++ accel/tcg/ldst_atomicity.c.inc | 36 +-------------- 2 files changed, 47 insertions(+), 34 deletions(-) create mode 100644 host/include/generic/host/load-extract-al16-al8.h diff --git a/host/include/generic/host/load-extract-al16-al8.h b/host/inclu= de/generic/host/load-extract-al16-al8.h new file mode 100644 index 0000000000..d95556130f --- /dev/null +++ b/host/include/generic/host/load-extract-al16-al8.h @@ -0,0 +1,45 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Atomic extract 64 from 128-bit, generic version. + * + * Copyright (C) 2023 Linaro, Ltd. + */ + +#ifndef HOST_LOAD_EXTRACT_AL16_AL8_H +#define HOST_LOAD_EXTRACT_AL16_AL8_H + +/** + * load_atom_extract_al16_or_al8: + * @pv: host address + * @s: object size in bytes, @s <=3D 8. + * + * Load @s bytes from @pv, when pv % s !=3D 0. If [p, p+s-1] does not + * cross an 16-byte boundary then the access must be 16-byte atomic, + * otherwise the access must be 8-byte atomic. + */ +static inline uint64_t ATTRIBUTE_ATOMIC128_OPT +load_atom_extract_al16_or_al8(void *pv, int s) +{ + uintptr_t pi =3D (uintptr_t)pv; + int o =3D pi & 7; + int shr =3D (HOST_BIG_ENDIAN ? 16 - s - o : o) * 8; + Int128 r; + + pv =3D (void *)(pi & ~7); + if (pi & 8) { + uint64_t *p8 =3D __builtin_assume_aligned(pv, 16, 8); + uint64_t a =3D qatomic_read__nocheck(p8); + uint64_t b =3D qatomic_read__nocheck(p8 + 1); + + if (HOST_BIG_ENDIAN) { + r =3D int128_make128(b, a); + } else { + r =3D int128_make128(a, b); + } + } else { + r =3D atomic16_read_ro(pv); + } + return int128_getlo(int128_urshift(r, shr)); +} + +#endif /* HOST_LOAD_EXTRACT_AL16_AL8_H */ diff --git a/accel/tcg/ldst_atomicity.c.inc b/accel/tcg/ldst_atomicity.c.inc index 35ce6d6368..6063395e11 100644 --- a/accel/tcg/ldst_atomicity.c.inc +++ b/accel/tcg/ldst_atomicity.c.inc @@ -9,6 +9,8 @@ * See the COPYING file in the top-level directory. */ =20 +#include "host/load-extract-al16-al8.h" + #ifdef CONFIG_ATOMIC64 # define HAVE_al8 true #else @@ -311,40 +313,6 @@ static uint64_t load_atom_extract_al16_or_exit(CPUArch= State *env, uintptr_t ra, return int128_getlo(r); } =20 -/** - * load_atom_extract_al16_or_al8: - * @p: host address - * @s: object size in bytes, @s <=3D 8. - * - * Load @s bytes from @p, when p % s !=3D 0. If [p, p+s-1] does not - * cross an 16-byte boundary then the access must be 16-byte atomic, - * otherwise the access must be 8-byte atomic. - */ -static inline uint64_t ATTRIBUTE_ATOMIC128_OPT -load_atom_extract_al16_or_al8(void *pv, int s) -{ - uintptr_t pi =3D (uintptr_t)pv; - int o =3D pi & 7; - int shr =3D (HOST_BIG_ENDIAN ? 16 - s - o : o) * 8; - Int128 r; - - pv =3D (void *)(pi & ~7); - if (pi & 8) { - uint64_t *p8 =3D __builtin_assume_aligned(pv, 16, 8); - uint64_t a =3D qatomic_read__nocheck(p8); - uint64_t b =3D qatomic_read__nocheck(p8 + 1); - - if (HOST_BIG_ENDIAN) { - r =3D int128_make128(b, a); - } else { - r =3D int128_make128(a, b); - } - } else { - r =3D atomic16_read_ro(pv); - } - return int128_getlo(int128_urshift(r, shr)); -} - /** * load_atom_4_by_2: * @pv: host address --=20 2.34.1