From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6A612C433EF for ; Fri, 11 Feb 2022 02:15:52 +0000 (UTC) Received: from localhost ([::1]:41258 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nILT8-0000oG-6M for qemu-devel@archiver.kernel.org; Thu, 10 Feb 2022 21:15:47 -0500 Received: from eggs.gnu.org ([209.51.188.92]:39376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nIKoZ-0005rm-UQ for qemu-devel@nongnu.org; Thu, 10 Feb 2022 20:33:36 -0500 Received: from [2607:f8b0:4864:20::434] (port=43564 helo=mail-pf1-x434.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nIKo1-0007VW-Gs for qemu-devel@nongnu.org; Thu, 10 Feb 2022 20:33:11 -0500 Received: by mail-pf1-x434.google.com with SMTP id d187so13457799pfa.10 for ; Thu, 10 Feb 2022 17:33:01 -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=E7JCU1a/pkRMOjn44wnlj8F4Wtu8gz5MK8RJjxKzysE=; b=fshm3hWQloyhBPjbfQtTna3OYyQUYODkY7XWqgbwLRrZgg9fQuLOK6RV7MSmk2mrJ1 Oy2qg3/iWLu5Tkvw7hwm9mL12aW0buEXSFoUQ1GU6ZGOVQP1rpkThcte8cKI1x4D/fJb JPcufIPRP/telAky94qMvHZpw8DKonpMA9T7FgBERfJKDZwRkqbibT/f0ars1bwxW5Ka VFqgS4mcrn839gO1CKVaWDexOZo1Y5Q7M9XIe9YLBlPY1quMhwqZnX5aOdKpPNPZvqyB R/VCMZBO3q9L6LMfNLXu9kXyvUu/eA1ymW4rtwmgtPCyEJv+bJjk/5YQaFvKXvQLIxtC 0WHQ== 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=E7JCU1a/pkRMOjn44wnlj8F4Wtu8gz5MK8RJjxKzysE=; b=Ol1rjRwJS5ZB8AAPRSFrUfhBuaNrIZHc9k9n6SPnWSnDmhUQUUlpPfDm+JVzmPk2L9 SE6MvgNACTxC4voRjDMBOVZseTJr1LB/3IGtNEWrMCiSUHfSjkwDcNWroAXnTpq+G9O3 xL6HiSdmNWlWOM3Ohx25tSs3wj2HguTlEhn0PAT1bfPKoGfQgwjG56lr7e5rcmXHZDWT GZkQnR/WXeCzI7HkNnBAhRr8Dv4PDqshqnWdFVF+EX2oGY9t9Sw125xfmNpjmzc+wd1t gdXF/D6bExXP5UpwyOR9LkubucYZu1CqSTWewM0/fXzF0N33TbkVhcD+qLObz9UpBXml jTgQ== X-Gm-Message-State: AOAM532/m2Du6XKEfb1Zq304mPSG207V+5TRFdXZrM901PVGZo3ptryu Di0q6T1l3hwFY2eO/najtF34kvMYxxLTnZAw X-Google-Smtp-Source: ABdhPJwTuqdJha2W43dOMt73Fxi0CaeMrvonGqAigG3h7pD4pVzME9MQ0bc9eU5iWtW7W/KpteEqsA== X-Received: by 2002:a63:5454:: with SMTP id e20mr8312601pgm.621.1644543180392; Thu, 10 Feb 2022 17:33:00 -0800 (PST) Received: from localhost.localdomain ([124.189.222.164]) by smtp.gmail.com with ESMTPSA id h5sm25738788pfi.111.2022.02.10.17.32.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 17:33:00 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 34/34] tests/tcg/multiarch: Add sigbus.c Date: Fri, 11 Feb 2022 12:30:59 +1100 Message-Id: <20220211013059.17994-35-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220211013059.17994-1-richard.henderson@linaro.org> References: <20220211013059.17994-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::434 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::434; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x434.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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=0.001, 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 Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" A mostly generic test for unaligned access raising SIGBUS. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- tests/tcg/multiarch/sigbus.c | 68 ++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 tests/tcg/multiarch/sigbus.c diff --git a/tests/tcg/multiarch/sigbus.c b/tests/tcg/multiarch/sigbus.c new file mode 100644 index 0000000000..8134c5fd56 --- /dev/null +++ b/tests/tcg/multiarch/sigbus.c @@ -0,0 +1,68 @@ +#define _GNU_SOURCE 1 + +#include +#include +#include +#include + + +unsigned long long x = 0x8877665544332211ull; +void * volatile p = (void *)&x + 1; + +void sigbus(int sig, siginfo_t *info, void *uc) +{ + assert(sig == SIGBUS); + assert(info->si_signo == SIGBUS); +#ifdef BUS_ADRALN + assert(info->si_code == BUS_ADRALN); +#endif + assert(info->si_addr == p); + exit(EXIT_SUCCESS); +} + +int main() +{ + struct sigaction sa = { + .sa_sigaction = sigbus, + .sa_flags = SA_SIGINFO + }; + int allow_fail = 0; + int tmp; + + tmp = sigaction(SIGBUS, &sa, NULL); + assert(tmp == 0); + + /* + * Select an operation that's likely to enforce alignment. + * On many guests that support unaligned accesses by default, + * this is often an atomic operation. + */ +#if defined(__aarch64__) + asm volatile("ldxr %w0,[%1]" : "=r"(tmp) : "r"(p) : "memory"); +#elif defined(__alpha__) + asm volatile("ldl_l %0,0(%1)" : "=r"(tmp) : "r"(p) : "memory"); +#elif defined(__arm__) + asm volatile("ldrex %0,[%1]" : "=r"(tmp) : "r"(p) : "memory"); +#elif defined(__powerpc__) + asm volatile("lwarx %0,0,%1" : "=r"(tmp) : "r"(p) : "memory"); +#elif defined(__riscv_atomic) + asm volatile("lr.w %0,(%1)" : "=r"(tmp) : "r"(p) : "memory"); +#else + /* No insn known to fault unaligned -- try for a straight load. */ + allow_fail = 1; + tmp = *(volatile int *)p; +#endif + + assert(allow_fail); + + /* + * We didn't see a signal. + * We might as well validate the unaligned load worked. + */ + if (BYTE_ORDER == LITTLE_ENDIAN) { + assert(tmp == 0x55443322); + } else { + assert(tmp == 0x77665544); + } + return EXIT_SUCCESS; +} -- 2.25.1