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[71.237.47.177]) by smtp.gmail.com with ESMTPSA id r17-20020a028811000000b003af4300d670sm4500923jai.27.2023.02.13.16.28.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Feb 2023 16:28:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; 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=XQOYBxgR23EvKF+EuGnmtn+Ceb+bOBIn7DIZLpdNiBw=; b=EUCQW19vk4UVvuv4EIv/YOLM0S9wcHJFDAoD3Ox2in/+tVBKNyiUz7e2YH9J3cjknE fXJJRyjN6pPywYJz5R0gKztDMfOl/ZvpAgM3xYiShkrWKno/48aQ0sLHTk9tf9TRyJmF mfWN2EyzTWdHco+uPHeWawoqtCSJJJBd4jiYXaq4HviLwGQIsaNDv7AOsgCvIP57ep20 8EXQ8j/xxBK+BJtbN8aL8HzqBFqXf9cUIiLZkoOSEEwI1w4gt19kR+wbjVDtuRYJovxA 4qg2IVUoCsN6/7eTI4H0YthfnqXhfJ1Q5ALipSqE9ifbL5cNPuc5A4wTOcyRRcSsUdis oCvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=XQOYBxgR23EvKF+EuGnmtn+Ceb+bOBIn7DIZLpdNiBw=; b=u1hDdn8tBO9td3Qx8/CLMxeBkQOB6ch+JdqMpsNhKBadI8PVGzmV3HOIT5LLNIcLq9 URRS+/ARpaBL6LE2JtS1zWON4bm6rSIosdqTw8V5H6TXhRgimEJcLiq1L/guPo2ORtg3 BIc/EiQADHiGlZkAUCctFu0xbV4SSMXxlRewJwU4OI3t1C5QC/QJeLPgqo/jsm2+5gT0 3zHp/YAtEZjPpb2Sv2lwoIPMfoQREdd1AgJCgcrOnmSUgzzvVaIGpm+HcdUOrGjqlmRB S4PsTa6gEGSfPeck2rC2Dq9YS+0itVdpGqBzGea5q19cNSbbTvgmJU8+iVN4STmTLvcH wIPg== X-Gm-Message-State: AO0yUKW0aHeuCJEujLAMdUkCntbxlCAKHXMyHzZ0DKhOQLQWet3Z/Cqq f52qRE0yAEEvLjhEEmCi8BVZWSC9HD7ZTvJS X-Google-Smtp-Source: AK7set9ADxJjgp9jrxEHmCokWNZsuj0U6WBYs9Z0gf7xA5SqRbFTfJIDbXSZSxeA1iVVJn3wD6gNug== X-Received: by 2002:a05:6e02:b4c:b0:315:564b:f3da with SMTP id f12-20020a056e020b4c00b00315564bf3damr571217ilu.8.1676334490042; Mon, 13 Feb 2023 16:28:10 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Warner Losh , richard.henderson@linaro.org, Paolo Bonzini , kevans@freebsd.org, f4bug@amsat.org, Thomas Huth , Juergen Lock , Stacey Son Subject: [PATCH v2 09/12] bsd-user: Start translation of arch-specific sysctls Date: Mon, 13 Feb 2023 17:27:54 -0700 Message-Id: <20230214002757.99240-10-imp@bsdimp.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230214002757.99240-1-imp@bsdimp.com> References: <20230214002757.99240-1-imp@bsdimp.com> 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: none client-ip=2607:f8b0:4864:20::132; envelope-from=imp@bsdimp.com; helo=mail-il1-x132.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: 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 @bsdimp-com.20210112.gappssmtp.com) X-ZM-MESSAGEID: 1676334521238100009 Content-Type: text/plain; charset="utf-8" From: Juergen Lock Intercept some syscalls that we need to translate (like the archiecture we're running on) and translate them. These are only the simplest ones so far. Signed-off-by: Juergen Lock Co-Authored-by: Stacey Son Signed-off-by: Stacey Son Co-Authored-by: Warner Losh Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/freebsd/os-sys.c | 145 +++++++++++++++++++++++++++++++++++++- 1 file changed, 143 insertions(+), 2 deletions(-) diff --git a/bsd-user/freebsd/os-sys.c b/bsd-user/freebsd/os-sys.c index e847404af66..cbaa70958b9 100644 --- a/bsd-user/freebsd/os-sys.c +++ b/bsd-user/freebsd/os-sys.c @@ -67,7 +67,7 @@ static const int host_ctl_size[CTLTYPE+1] =3D { */ static const abi_ulong target_max_mem =3D UINT32_MAX - 0x100c000 + 1; =20 -static abi_ulong G_GNUC_UNUSED cap_memory(uint64_t mem) +static abi_ulong cap_memory(uint64_t mem) { if (((unsigned long)target_max_mem) < mem) { mem =3D target_max_mem; @@ -79,7 +79,7 @@ static abi_ulong G_GNUC_UNUSED cap_memory(uint64_t mem) =20 static unsigned long host_page_size; =20 -static abi_ulong G_GNUC_UNUSED scale_to_target_pages(uint64_t pages) +static abi_ulong scale_to_target_pages(uint64_t pages) { if (host_page_size =3D=3D 0) { host_page_size =3D getpagesize(); @@ -273,6 +273,146 @@ static abi_long G_GNUC_UNUSED do_freebsd_sysctl_oid(C= PUArchState *env, int32_t * oidfmt(snamep, namelen, NULL, &kind); =20 /* Handle some arch/emulator dependent sysctl()'s here. */ + switch (snamep[0]) { + case CTL_KERN: + switch (snamep[1]) { + case KERN_USRSTACK: + if (oldlen) { + (*(abi_ulong *)holdp) =3D tswapal(TARGET_USRSTACK); + } + holdlen =3D sizeof(abi_ulong); + ret =3D 0; + goto out; + + case KERN_PS_STRINGS: + if (oldlen) { + (*(abi_ulong *)holdp) =3D tswapal(TARGET_PS_STRINGS); + } + holdlen =3D sizeof(abi_ulong); + ret =3D 0; + goto out; + + default: + break; + } + break; + + case CTL_HW: + switch (snamep[1]) { + case HW_MACHINE: + holdlen =3D sizeof(TARGET_HW_MACHINE); + if (holdp) { + strlcpy(holdp, TARGET_HW_MACHINE, oldlen); + } + ret =3D 0; + goto out; + + case HW_MACHINE_ARCH: + { + holdlen =3D sizeof(TARGET_HW_MACHINE_ARCH); + if (holdp) { + strlcpy(holdp, TARGET_HW_MACHINE_ARCH, oldlen); + } + ret =3D 0; + goto out; + } + case HW_NCPU: + if (oldlen) { + (*(int32_t *)holdp) =3D tswap32(bsd_get_ncpu()); + } + holdlen =3D sizeof(int32_t); + ret =3D 0; + goto out; +#if defined(TARGET_ARM) + case HW_FLOATINGPT: + if (oldlen) { + ARMCPU *cpu =3D env_archcpu(env); + *(abi_int *)holdp =3D cpu_isar_feature(aa32_vfp, cpu); + } + holdlen =3D sizeof(int32_t); + ret =3D 0; + goto out; +#endif + + +#ifdef TARGET_ABI32 + case HW_PHYSMEM: + case HW_USERMEM: + case HW_REALMEM: + holdlen =3D sizeof(abi_ulong); + ret =3D 0; + + if (oldlen) { + int mib[2] =3D {snamep[0], snamep[1]}; + unsigned long lvalue; + size_t len =3D sizeof(lvalue); + + if (sysctl(mib, 2, &lvalue, &len, NULL, 0) =3D=3D -1) { + ret =3D -1; + } else { + lvalue =3D cap_memory(lvalue); + (*(abi_ulong *)holdp) =3D tswapal((abi_ulong)lvalue); + } + } + goto out; +#endif + + default: + { + static int oid_hw_availpages; + static int oid_hw_pagesizes; + + if (!oid_hw_availpages) { + int real_oid[CTL_MAXNAME + 2]; + size_t len =3D sizeof(real_oid) / sizeof(int); + + if (sysctlnametomib("hw.availpages", real_oid, &len) >=3D = 0) { + oid_hw_availpages =3D real_oid[1]; + } + } + if (!oid_hw_pagesizes) { + int real_oid[CTL_MAXNAME + 2]; + size_t len =3D sizeof(real_oid) / sizeof(int); + + if (sysctlnametomib("hw.pagesizes", real_oid, &len) >=3D 0= ) { + oid_hw_pagesizes =3D real_oid[1]; + } + } + + if (oid_hw_availpages && snamep[1] =3D=3D oid_hw_availpages) { + long lvalue; + size_t len =3D sizeof(lvalue); + + if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) = =3D=3D -1) { + ret =3D -1; + } else { + if (oldlen) { + lvalue =3D scale_to_target_pages(lvalue); + (*(abi_ulong *)holdp) =3D tswapal((abi_ulong)lvalu= e); + } + holdlen =3D sizeof(abi_ulong); + ret =3D 0; + } + goto out; + } + + if (oid_hw_pagesizes && snamep[1] =3D=3D oid_hw_pagesizes) { + if (oldlen) { + (*(abi_ulong *)holdp) =3D tswapal((abi_ulong)getpagesi= ze()); + ((abi_ulong *)holdp)[1] =3D 0; + } + holdlen =3D sizeof(abi_ulong) * 2; + ret =3D 0; + goto out; + } + break; + } + } + break; + + default: + break; + } =20 #ifdef TARGET_ABI32 /* @@ -336,6 +476,7 @@ static abi_long G_GNUC_UNUSED do_freebsd_sysctl_oid(CPU= ArchState *env, int32_t * } } =20 +out: *holdlenp =3D holdlen; return ret; } --=20 2.39.1