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Thu, 28 Mar 2024 23:32:22 -0700 (PDT) From: Max Filippov To: qemu-devel@nongnu.org Cc: Max Filippov , qemu-stable@nongnu.org Subject: [PATCH] linux-user/syscall: xtensa: fix target_msqid_ds and ipc_perm conversion Date: Thu, 28 Mar 2024 23:31:48 -0700 Message-Id: <20240329063148.129343-1-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.39.2 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=jcmvbkbc@gmail.com; helo=mail-pl1-x62c.google.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 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, FREEMAIL_FROM=0.001, FROM_LOCAL_NOVOWEL=0.5, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.999, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1711693974311100003 Content-Type: text/plain; charset="utf-8" - target_ipc_perm::mode and target_ipc_perm::__seq fields are 32-bit wide on xtensa and thus need to use tswap32 - target_msqid_ds::msg_*time field pairs are reversed on big-endian xtensa Both issues result in incorrect conversion results on big-endian xtensa targets, spotted by the libc-test http://nsz.repo.hu/git/?p=3Dlibc-test Cc: qemu-stable@nongnu.org Fixes: a3da8be5126b ("target/xtensa: linux-user: fix sysv IPC structures") Signed-off-by: Max Filippov --- linux-user/syscall.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index e384e1424890..cb334e90d6f0 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3758,12 +3758,13 @@ static inline abi_long target_to_host_ipc_perm(stru= ct ipc_perm *host_ip, host_ip->gid =3D tswap32(target_ip->gid); host_ip->cuid =3D tswap32(target_ip->cuid); host_ip->cgid =3D tswap32(target_ip->cgid); -#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) +#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) |= | \ + defined(TARGET_XTENSA) host_ip->mode =3D tswap32(target_ip->mode); #else host_ip->mode =3D tswap16(target_ip->mode); #endif -#if defined(TARGET_PPC) +#if defined(TARGET_PPC) || defined(TARGET_XTENSA) host_ip->__seq =3D tswap32(target_ip->__seq); #else host_ip->__seq =3D tswap16(target_ip->__seq); @@ -3786,12 +3787,13 @@ static inline abi_long host_to_target_ipc_perm(abi_= ulong target_addr, target_ip->gid =3D tswap32(host_ip->gid); target_ip->cuid =3D tswap32(host_ip->cuid); target_ip->cgid =3D tswap32(host_ip->cgid); -#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) +#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) |= | \ + defined(TARGET_XTENSA) target_ip->mode =3D tswap32(host_ip->mode); #else target_ip->mode =3D tswap16(host_ip->mode); #endif -#if defined(TARGET_PPC) +#if defined(TARGET_PPC) || defined(TARGET_XTENSA) target_ip->__seq =3D tswap32(host_ip->__seq); #else target_ip->__seq =3D tswap16(host_ip->__seq); @@ -4111,6 +4113,14 @@ static inline abi_long do_semtimedop(int semid, struct target_msqid_ds { struct target_ipc_perm msg_perm; +#if defined(TARGET_XTENSA) && TARGET_BIG_ENDIAN + abi_ulong __unused1; + abi_ulong msg_stime; + abi_ulong __unused2; + abi_ulong msg_rtime; + abi_ulong __unused3; + abi_ulong msg_ctime; +#else abi_ulong msg_stime; #if TARGET_ABI_BITS =3D=3D 32 abi_ulong __unused1; @@ -4122,6 +4132,7 @@ struct target_msqid_ds abi_ulong msg_ctime; #if TARGET_ABI_BITS =3D=3D 32 abi_ulong __unused3; +#endif #endif abi_ulong __msg_cbytes; abi_ulong msg_qnum; --=20 2.39.2