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([122.255.60.245]) by smtp.gmail.com with ESMTPSA id a8-20020a654188000000b003fd4831e6fesm9079283pgq.70.2022.06.28.04.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jun 2022 04:17:11 -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=zerCkHOdwKIBilTQCtBXa5Y3gI08+JACKBxg6I39kUQ=; b=ZlAM4Rw6H4MrIzKVS9yfMRhMGN1jqF4P5Y98hGgPfM0ntYCf7q2h4gHN70n6oWoBp9 V6Gzm5tfRsNy9ylnEWw28LqLytT9+yHYmNOKkkWY8b8+VxAN0mNqx51tgYSGVubWlZpS oVcDLB124aMITc46mHwCwYtVKyjAkmWNJFwS5314TVXthwKAQcJxJanl8kLbjbkY52ab 34D4TKx0nCw26Pi4Bw6nCUi+lhjF2qagmmGQd2ViMZnECdTg2UzJ5LmWxBOiu49p7Bml KV1T6s46Ls1Xro+jNjh3iPbJpYZFsDHTVQd+1JPBkeTFfPagS0460gM6kwiKBgAVdrzQ jYDA== 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=zerCkHOdwKIBilTQCtBXa5Y3gI08+JACKBxg6I39kUQ=; b=hCQM7NrPKxF3IcAI048vWH5XUuZxfdgiALXrn3R/HUG8BmNm1ICzBhbWivWF38Squt JSNhV9ZiW3uzGrG6QfCd4lnqKmDHwEW/oTR/UA0yCKzQqc1NFWyPciIkJr5SKWn4dyR9 hQbWuewEqiqQ+LoxpF4YNf3X/DWrVmtY7qUUjzOxaj9rIwwY1FxJNouyGx6ZzoNWAzMS /EBKgQnCjQLB+wbSxninjC0rYp3VjTi2NXYIm+1jeci5Jw+xfLVa3T3uzXp+02vxD2aV llJEnAIxv8+yCKOlL2O7yiwxJNMxYI+S648Qn79hP87EdVW0XtWHLTgHPN41yRy8kaWH iZCA== X-Gm-Message-State: AJIora9vVkp3HsMdVlrqocjDOspB7UfBd0u5NSt6fx37k8dSWGfogs5K PIR+trsyDyF08XiFsBbzxFrOImHqa8y2Ig== X-Google-Smtp-Source: AGRyM1t9Pi2swKFlRe3wJrGg7n7QvXsDboGCciQ/VIjfvpi/B4ptnjfBqRp8UYY4qb08Xad/vf/93g== X-Received: by 2002:a17:902:d718:b0:168:d9df:4f1c with SMTP id w24-20020a170902d71800b00168d9df4f1cmr4306171ply.41.1656415031792; Tue, 28 Jun 2022 04:17:11 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: f4bug@amsat.org, alex.bennee@linaro.org, jiaxun.yang@flygoat.com, aleksandar.rikalo@syrmia.com Subject: [PATCH v5 1/8] target/mips: Create report_fault for semihosting Date: Tue, 28 Jun 2022 16:46:54 +0530 Message-Id: <20220628111701.677216-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220628111701.677216-1-richard.henderson@linaro.org> References: <20220628111701.677216-1-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::633; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x633.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: 1656415144807100001 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 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- 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 67c35fe7f9..153df1fa15 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, 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 num_of_bytes =3D write(fd, dst, len); @@ -204,8 +209,7 @@ 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 num_of_bytes =3D read(fd, dst, len); @@ -220,7 +224,7 @@ 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)); @@ -233,9 +237,7 @@ 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 @@ -243,16 +245,11 @@ 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 @@ -375,7 +372,7 @@ 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