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[2603:800c:1201:c600:119c:490c:a4ee:8e8]) by smtp.gmail.com with ESMTPSA id t8-20020a6549c8000000b00372eb3a7fb3sm2729934pgs.92.2022.03.03.13.00.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Mar 2022 13:00:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1XkfzGvn+ZlmZZNrl7Dk1RW038tolY/tjYs6706uD7c=; b=UWfD1YkGnU6ZtDvLvGlz8eSLOw1CJ1MYin9WEGe5wLMP/BxizntOJPxFyIBDc6Y3Rn GJMggH2T04KWs8HMAqB4WI/0Nq7z1w/7aLJjAF4Cnp4+ZzxfPxSRHPu8g72FfwyOLQDu vEjo06V3mLCdmxJCWhWJOausjVjCzpFQGawhnSg7bJ2H5HRrxtgNp5kyOOWKav9e9sYf QBxvw8cnfboVM0bCBRTTfL5TI8PnhWlIptkSwzxtQTIASNGe3IHb72XjMjRBGGvUA5BY PUfPIYUSOu1Mc6g1vMfwtYEruIlW6HL+7DhjFWRerZEyqbmya5XDkrEI7k3n2tz9/NUi FK8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1XkfzGvn+ZlmZZNrl7Dk1RW038tolY/tjYs6706uD7c=; b=gnxAUeHTp+wKTgoH7tH3fJgxnEV4iQNH3LXDiQPRnuNd4NIKkfPgL1Q1uEy7FDTvhH YKNuco0BCMrfwDhmo9Po1SGaw2vPIzDGVd28MZLIc6iZBcN1y/lHS0oyELdlLr/WS75Q wyr45prKsGNJNdG2SVVa3b9dWu5WkYko6XiNu7kilFIpmu1DecnQtSN0ciN+EL/smyd8 rTKH3Q6Y4mZYCvclBW5G0FbxynLqE1mlWWPFGylVWpJBQCvU64KuYq5NkcLI8lu7pBy2 SscTZ7t3Ss0RmdHKMxT3oholE5YY4M2oPT4mlJg/sQ7zMfdQJQnXV+5OmmGbJjjOaBxl yNuQ== X-Gm-Message-State: AOAM531DP/Oy223p3sMUJ09o49hEAmni/KSMb1dF8PfLUM/UdFMNrSIV hOCemeohCgUioHi8ushMwYcepCHoOdsWrg== X-Google-Smtp-Source: ABdhPJwaji2A0VFGnhWeRz6uMRfoGH8eUsQeNCgMlysApqvFKIWJ53K+fl73qLSYbVxuMjS8q3Vu0w== X-Received: by 2002:a17:903:11c9:b0:151:9521:d5c7 with SMTP id q9-20020a17090311c900b001519521d5c7mr11388492plh.73.1646341223486; Thu, 03 Mar 2022 13:00:23 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 24/30] accel/tcg: Support TCG_TARGET_SIGNED_ADDR32 for softmmu Date: Thu, 3 Mar 2022 10:59:38 -1000 Message-Id: <20220303205944.469445-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220303205944.469445-1-richard.henderson@linaro.org> References: <20220303205944.469445-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::102f (failed) 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::102f; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102f.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 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, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: , Cc: peter.maydell@linaro.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1646342649392100003 When TCG_TARGET_SIGNED_ADDR32 is set, adjust the tlb addend to allow the 32-bit guest address to be sign extended within the 64-bit host register instead of zero extended. This will simplify tcg hosts like MIPS, RISC-V, and LoongArch, which naturally sign-extend 32-bit values, in contrast to x86_64 and AArch64 which zero-extend them. Reviewed-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- accel/tcg/cputlb.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index 0e62aa5d7c..0dbc3efbc7 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -40,6 +40,7 @@ #include "qemu/plugin-memory.h" #endif #include "tcg/tcg-ldst.h" +#include "tcg-target-sa32.h" =20 /* DEBUG defines, enable DEBUG_TLB_LOG to log to the CPU_LOG_MMU target */ /* #define DEBUG_TLB */ @@ -93,6 +94,9 @@ static inline size_t sizeof_tlb(CPUTLBDescFast *fast) =20 static inline uintptr_t g2h_tlbe(const CPUTLBEntry *tlb, target_ulong gadd= r) { + if (TCG_TARGET_SIGNED_ADDR32 && TARGET_LONG_BITS =3D=3D 32) { + return tlb->addend + (int32_t)gaddr; + } return tlb->addend + (uintptr_t)gaddr; } =20 @@ -1244,7 +1248,13 @@ void tlb_set_page_with_attrs(CPUState *cpu, target_u= long vaddr, desc->iotlb[index].attrs =3D attrs; =20 /* Now calculate the new entry */ - tn.addend =3D addend - vaddr_page; + + if (TCG_TARGET_SIGNED_ADDR32 && TARGET_LONG_BITS =3D=3D 32) { + tn.addend =3D addend - (int32_t)vaddr_page; + } else { + tn.addend =3D addend - vaddr_page; + } + if (prot & PAGE_READ) { tn.addr_read =3D address; if (wp_flags & BP_MEM_READ) { --=20 2.25.1