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[174.21.143.238]) by smtp.gmail.com with ESMTPSA id a2sm8772418pgh.57.2020.05.18.19.54.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2020 19:54:13 -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=DPjUnZGFzA9RASEgo9moUEv2ECNWzhiHEuAoKuGlTe8=; b=G44V/9L3H6GlDY8K03/NMUj7y57rehEklPX2f0wzMsUH4H8YQdQcWoUsmKu/pynlbr CQTRPyCtWQyVTLHpDLnPl4y2AF28/wB1m+slD2E64dFxB1wjMU5U4fPweM5fr6LELCHU 3ZM3RdfFku607Qz91jnOYZIxbyYGlBukIliP5ncyoK2G/h7T03hHgGiAaJEJGZcqiNBc XKb3QjB6NKOtOk3wMgFL6C7NYzn0ISYSo2yYcigZsBvLv0dAO63X8rWVdFnsq2FbibBU c1dC8VmqUfSmzM4bmZ8NucYzGF70QpGlxpqtoqQEW0C3G3GS1F/eoOKYGNQ4+biBwBfx QalA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DPjUnZGFzA9RASEgo9moUEv2ECNWzhiHEuAoKuGlTe8=; b=B2uUa18TKzAJvXviF/RIOyIgj1hWiCPUYh+2O7crRBD6ZrQJvpoKW5Rhykq6vTS1CZ rPgZhqmU6tWLaDv4ZOHXPKS9g4yCwBDnZiOi8Ky2jWhZAoTEhYk/EEVe/+hdUxTr0BFr CWdi/1PxwwH2Dplem3j8r0/XfmxXpz1611RBup2UuesimA3XtKMGzVLxuZhS4XtKYghG hdTXbo7dpTlYTwWfhKCgj/qVPcL5E15//V3rRSXrbXWDly/c0Ui65ct3zSl1QQt47sSr t6nX/QBHi6O6B1oPfU5OWxayrNE1CZlsZXDtATS38m/YptFuZaX79hqA7TaZxwP/g4Fc Nd3Q== X-Gm-Message-State: AOAM533fby5wU5cS6T/3mt1NAAlyZ4XgX/B4B2cB8P0tro4v7ckMUXqt vVAk2l1kEtQDdT4K1bHf5cb2UEpC1so= X-Google-Smtp-Source: ABdhPJygCfWcHJSGmSBWl3f8oeq7VakRbKRYbcjTVmxF4ZXjHKHzweI2tkWwOwXZUIVMHI5Pnaph1Q== X-Received: by 2002:a63:c90f:: with SMTP id o15mr17191655pgg.67.1589856854446; Mon, 18 May 2020 19:54:14 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [RISU v2 13/17] Split RES_MISMATCH for registers and memory Date: Mon, 18 May 2020 19:53:51 -0700 Message-Id: <20200519025355.4420-14-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200519025355.4420-1-richard.henderson@linaro.org> References: <20200519025355.4420-1-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::444; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x444.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" By remembering the specific comparison that failed, we do not have to try again when it comes time to report. This makes the mem_used flag redundant. Also, packet_mismatch is now redundant with RES_BAD_IO. This means that the only thing that report_match_status does is to report on register status, so rename to report_mismatch_reg. Also, we know there is a failure, so don't return a status from the report. Signed-off-by: Richard Henderson Reviewed-by: Alex Benn=C3=A9e --- risu.h | 13 ++++++------- reginfo.c | 45 ++++++++------------------------------------- risu.c | 10 +++++++--- 3 files changed, 21 insertions(+), 47 deletions(-) diff --git a/risu.h b/risu.h index 2ded5c4..b234f93 100644 --- a/risu.h +++ b/risu.h @@ -54,7 +54,8 @@ typedef enum { typedef enum { RES_OK =3D 0, RES_END, - RES_MISMATCH, + RES_MISMATCH_REG, + RES_MISMATCH_MEM, RES_BAD_IO, } RisuResult; =20 @@ -105,13 +106,11 @@ RisuResult send_register_info(void *uc); */ RisuResult recv_and_compare_register_info(void *uc); =20 -/* Print a useful report on the status of the last comparison - * done in recv_and_compare_register_info(). This is called on - * exit, so need not restrict itself to signal-safe functions. - * Should return 0 if it was a good match (ie end of test) - * and 1 for a mismatch. +/* + * Print a useful report on the status of the last reg comparison + * done in recv_and_compare_register_info(). */ -int report_match_status(void); +void report_mismatch_reg(void); =20 /* Interface provided by CPU-specific code: */ =20 diff --git a/reginfo.c b/reginfo.c index 31bc699..a007f16 100644 --- a/reginfo.c +++ b/reginfo.c @@ -17,9 +17,6 @@ static struct reginfo master_ri, apprentice_ri; static uint8_t master_memblock[MEMBLOCKLEN]; =20 -static int mem_used; -static int packet_mismatch; - RisuResult send_register_info(void *uc) { struct reginfo ri; @@ -107,10 +104,10 @@ RisuResult recv_and_compare_register_info(void *uc) */ res =3D read_buffer(&master_ri, reginfo_size()); if (res !=3D RES_OK) { - packet_mismatch =3D 1; + /* fail */ } else if (!reginfo_is_eq(&master_ri, &apprentice_ri)) { /* register mismatch */ - res =3D RES_MISMATCH; + res =3D RES_MISMATCH_REG; } else if (op =3D=3D OP_TESTEND) { res =3D RES_END; } @@ -124,13 +121,12 @@ RisuResult recv_and_compare_register_info(void *uc) (uintptr_t)memblock); break; case OP_COMPAREMEM: - mem_used =3D 1; res =3D read_buffer(master_memblock, MEMBLOCKLEN); if (res !=3D RES_OK) { - packet_mismatch =3D 1; + /* fail */ } else if (memcmp(memblock, master_memblock, MEMBLOCKLEN) !=3D 0) { /* memory mismatch */ - res =3D RES_MISMATCH; + res =3D RES_MISMATCH_MEM; } respond(res =3D=3D RES_OK ? RES_OK : RES_END); break; @@ -141,40 +137,15 @@ RisuResult recv_and_compare_register_info(void *uc) return res; } =20 -/* Print a useful report on the status of the last comparison - * done in recv_and_compare_register_info(). This is called on - * exit, so need not restrict itself to signal-safe functions. - * Should return 0 if it was a good match (ie end of test) - * and 1 for a mismatch. +/* + * Print a useful report on the status of the last reg comparison + * done in recv_and_compare_register_info(). */ -int report_match_status(void) +void report_mismatch_reg(void) { - int resp =3D 0; - fprintf(stderr, "match status...\n"); - if (packet_mismatch) { - fprintf(stderr, "packet mismatch (probably disagreement " - "about UNDEF on load/store)\n"); - return 1; - } - if (!reginfo_is_eq(&master_ri, &apprentice_ri)) { - fprintf(stderr, "mismatch on regs!\n"); - resp =3D 1; - } - if (mem_used - && memcmp(memblock, &master_memblock, MEMBLOCKLEN) !=3D 0) { - fprintf(stderr, "mismatch on memory!\n"); - resp =3D 1; - } - if (!resp) { - fprintf(stderr, "match!\n"); - return 0; - } - fprintf(stderr, "master reginfo:\n"); reginfo_dump(&master_ri, stderr); fprintf(stderr, "apprentice reginfo:\n"); reginfo_dump(&apprentice_ri, stderr); - reginfo_dump_mismatch(&master_ri, &apprentice_ri, stderr); - return resp; } diff --git a/risu.c b/risu.c index ea4b4d3..398faac 100644 --- a/risu.c +++ b/risu.c @@ -224,9 +224,13 @@ static int apprentice(void) case RES_END: return EXIT_SUCCESS; =20 - case RES_MISMATCH: - fprintf(stderr, "mismatch after %zd checkpoints\n", signal_count); - report_match_status(); + case RES_MISMATCH_REG: + fprintf(stderr, "mismatch reg after %zd checkpoints\n", signal_cou= nt); + report_mismatch_reg(); + return EXIT_FAILURE; + + case RES_MISMATCH_MEM: + fprintf(stderr, "mismatch mem after %zd checkpoints\n", signal_cou= nt); return EXIT_FAILURE; =20 case RES_BAD_IO: --=20 2.20.1