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([2602:ae:1547:e101:c626:2f70:ac99:7c97]) by smtp.gmail.com with ESMTPSA id k8-20020a170902d58800b001641244d051sm13378807plh.257.2022.06.07.22.19.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 22:19:49 -0700 (PDT) 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=HeLbzu4J7HUJ/gIyU/6OdVT7zEVHegu20jhi9pPruCA=; b=bSETDgHEZ2Dmj+0hZNIu2hA5cwSLmDURwrqny9qYr0TiJ9EDSmUGT+t5kcM4Eendt+ +tPapgeSMxV9t+MH8qT8fbEQSDZWP0jqLf2Z/WJhnQyaA+8KCj0FQAGAqfPzwmmJO9C4 vhtB4HYOhcrrxRBi94csSpf8Hqto4LLjsxhUoMSNMZLLtt5ULNw/PaJ1TgWm7SVNYQzn G3LxIuJ4eUaM5Dmt8m4hJr1ZtJPOKoFnbV+k3pt3sXttAzTPKmeBixjah0MWO4rGKI9E d26BmT/LmoZK9qq1nxXqPHQQxtgLrDOxdbncsAdLzGnP49p83Q9xg7bFgY2Oxu/rDUup 9hNA== 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=HeLbzu4J7HUJ/gIyU/6OdVT7zEVHegu20jhi9pPruCA=; b=cu87zTLXI4l7pwotJb2wIjVK5z7c4LK+SRDuse3zW6G+f2FsY1/2yZlb1rIDVJNDzC VnAw0ubb8qKYv19q+/A2TraMjKHOjnItwB11W59AzK2XJedNMtHL3yFzXasGObHdEdEm CQVh4ocYukOr36QG3cX7vm3TzO1o1/hYeG74AqUKlNfI0KQGWjunp/8Opcgli8zZYGen e9OrVX3l4IkozVwBA2Z8x26syqThpr38hHufdZUErFAtDP4JEiSLrxdlC8U856P6cZS/ XgDYdlEjUPg85WNxJr91R8r2zkntGVZS1mAaIS35MhTC0SB8HeKWWdH1puVQJmWXiLG5 t+gQ== X-Gm-Message-State: AOAM53353pXTQlVA5AtcCGhsdN04Tx04vSLiLzvKi+jyc+CR8EHxgOWe i8FycDEKc0vbhQmxrgt5gAMeX47votvn1Q== X-Google-Smtp-Source: ABdhPJxntGRpbXirnys95Nz6FCgCMVmNYsV0H34a1NxTxAiR2X4mfOxk2F34+X48yYFGI0SJa92qTw== X-Received: by 2002:a05:6a00:4504:b0:51b:f04e:a130 with SMTP id cw4-20020a056a00450400b0051bf04ea130mr22409360pfb.52.1654665589830; Tue, 07 Jun 2022 22:19:49 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: f4bug@amsat.org Subject: [PATCH v4 03/11] target/mips: Create report_fault for semihosting Date: Tue, 7 Jun 2022 22:19:37 -0700 Message-Id: <20220608051945.802339-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220608051945.802339-1-richard.henderson@linaro.org> References: <20220608051945.802339-1-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::530; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x530.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" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1654666160627100001 Content-Type: text/plain; charset="utf-8" The UHI specification does not have an EFAULT value, and further specifies that "undefined UHI operations should not return control to the target". So, log the error and abort. Signed-off-by: Richard Henderson --- target/mips/tcg/sysemu/mips-semi.c | 33 ++++++++++++++---------------- 1 file changed, 15 insertions(+), 18 deletions(-) diff --git a/target/mips/tcg/sysemu/mips-semi.c b/target/mips/tcg/sysemu/mi= ps-semi.c index 2a039baf4c..33221444e1 100644 --- a/target/mips/tcg/sysemu/mips-semi.c +++ b/target/mips/tcg/sysemu/mips-semi.c @@ -114,6 +114,13 @@ enum UHIErrno { UHI_EXDEV =3D 18, }; =20 +static void report_fault(CPUMIPSState *env) +{ + int op =3D env->active_tc.gpr[25]; + error_report("Fault during UHI operation %d", op); + abort(); +} + static int errno_mips(int host_errno) { /* Errno values taken from asm-mips/errno.h */ @@ -136,8 +143,7 @@ static int copy_stat_to_target(CPUMIPSState *env, const= struct stat *src, hwaddr len =3D sizeof(struct UHIStat); UHIStat *dst =3D lock_user(VERIFY_WRITE, vaddr, len, 0); if (!dst) { - errno =3D EFAULT; - return -1; + report_fault(env); } =20 dst->uhi_st_dev =3D tswap16(src->st_dev); @@ -188,8 +194,7 @@ static int write_to_file(CPUMIPSState *env, target_ulon= g fd, target_ulong vaddr, int num_of_bytes; void *dst =3D lock_user(VERIFY_READ, vaddr, len, 1); if (!dst) { - errno =3D EFAULT; - return -1; + report_fault(env); } =20 if (offset) { @@ -213,8 +218,7 @@ static int read_from_file(CPUMIPSState *env, target_ulo= ng fd, int num_of_bytes; void *dst =3D lock_user(VERIFY_WRITE, vaddr, len, 0); if (!dst) { - errno =3D EFAULT; - return -1; + report_fault(env); } =20 if (offset) { @@ -237,7 +241,7 @@ static int copy_argn_to_target(CPUMIPSState *env, int a= rg_num, int strsize =3D strlen(semihosting_get_arg(arg_num)) + 1; char *dst =3D lock_user(VERIFY_WRITE, vaddr, strsize, 0); if (!dst) { - return -1; + report_fault(env); } =20 strcpy(dst, semihosting_get_arg(arg_num)); @@ -250,9 +254,7 @@ static int copy_argn_to_target(CPUMIPSState *env, int a= rg_num, do { \ p =3D lock_user_string(addr); \ if (!p) { \ - gpr[2] =3D -1; \ - gpr[3] =3D EFAULT; \ - return; \ + report_fault(env); \ } \ } while (0) =20 @@ -260,16 +262,11 @@ static int copy_argn_to_target(CPUMIPSState *env, int= arg_num, do { \ p =3D lock_user_string(addr); \ if (!p) { \ - gpr[2] =3D -1; \ - gpr[3] =3D EFAULT; \ - return; \ + report_fault(env); \ } \ p2 =3D lock_user_string(addr2); \ if (!p2) { \ - unlock_user(p, addr, 0); \ - gpr[2] =3D -1; \ - gpr[3] =3D EFAULT; \ - return; \ + report_fault(env); \ } \ } while (0) =20 @@ -400,7 +397,7 @@ void mips_semihosting(CPUMIPSState *env) break; #endif default: - fprintf(stderr, "Unknown UHI operation %d\n", op); + error_report("Unknown UHI operation %d", op); abort(); } return; --=20 2.34.1