From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299374; cv=none; d=zohomail.com; s=zohoarc; b=g3pd/QY1C1oqadUK3pDLxc+rH3zca5XmU5Fl4RApE/y3c8SyY8yXzwlHGiUYnSpU9C8qpT07vshX//b6fHf1/wUg9IdYoA5EXoTGSAzbBZGIz1tsC1195Y+7A2YsU+ZR/Y7YILVBtpKZ5RcTgbx8FYzC1hBa2qk++49d4aqTPV4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299374; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=QpX5S/32Rn+0vixurm/FTGR7gNgdKeFkSlJ8tHRDNqU=; b=APyGt2F4JUsMu2w39+JXPNabvZG9eXr1QUXOiC3eAWdWAlcZCiekeQOpGnPv0MVVMwLA4s1Nu4MVVel7bBLAnj4Kpt2fKOi74O8uXyz0MsVEddNiBHNaGK1wLLUaumkWY0XwaqDak7qBaWf/8M23u7w3AqD++TScDw7oUEWvV04= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718299374144691.502106824555; Thu, 13 Jun 2024 10:22:54 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8h-0000ct-Uk; Thu, 13 Jun 2024 13:21:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8g-0000c5-GC for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:30 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8e-0005mC-R3 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:30 -0400 Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1f8507aac31so11528445ad.3 for ; Thu, 13 Jun 2024 10:21:28 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299287; x=1718904087; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QpX5S/32Rn+0vixurm/FTGR7gNgdKeFkSlJ8tHRDNqU=; b=YAcKRAXv7b/EggkNmDINGmC4Fj881yOdtol02tiT846SvmLCEf2UXDQLWmeO4L4+SW K616m8+jlP7SUYFAdqN8p4QTMsGbCcyEZYWLaQ9Fsk8QOvwzKJELPXSSVrRAL9RPLaYT An/WNWo0hGhw4vWQkFrC61rX3KbKG1AGQjyoDk276Y5EzI38NNULP22JDumlmW9cEpTk aAuhL2DKnKlO+TX87d38qoJRDfWElnxULD8Tsb9JnQYIxaQ+OCWSEbaB6MI/uEu6er0W pJy59UayRfPDM0OZ8vEfB10xY/vlbRoodOQ9a1KLSkzZgBNObKoELLAFVVieb7ThmHJl ZkmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299287; x=1718904087; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QpX5S/32Rn+0vixurm/FTGR7gNgdKeFkSlJ8tHRDNqU=; b=D5+Fw5/si4McfKl43uII/Pyn99HenuHQAk4zrftKWwypzBpQ9d+UZ9PPlHEnwBOZit wrYs0PxHMESYQN0tZ4j+KK1m7a/rO2Ot4Cy7mDxI/pxP/pevyHeVeplauHOgYDapZSuR +5yQeoZc9JHPxeZU6hrwvqdukNob2zfv4VDta6rXrq+cPaeWgzoOkUY8uZfGGP1oDrC/ KsA9OzaPO/EZ5OLSJ1xWmHXnCDCQuQ/IVWDmovQIfc9xkE0pCcTJoZMfmbz8cn5c25gg ief2yy+pVEaPgZyHfdUyHK1hnjgzEm8DNzPJ2D+p53wW5dIPszuO5oibLkZMddlMsBGa DsnQ== X-Gm-Message-State: AOJu0YzGDvqleqr87DoXm5Dc2E/gpmeJhs5922k2OIleT3bPYexnysMC 88wWHh3jplGFK4UAHN9uPpWI2dIeoQaGnIK5+Y/qi3g1WfldPWyZEGEC+vZOmY9HVmz1osFe5i5 W X-Google-Smtp-Source: AGHT+IHXUqVGR5baSY4e/eQRRZrQiDf3GIXwNokVj2pkj8CeHpHEjXJcanbNfcasNjF49Cht8EKpyA== X-Received: by 2002:a17:902:c20c:b0:1f8:44f8:a366 with SMTP id d9443c01a7336-1f8627ce3dfmr3305895ad.16.1718299287162; Thu, 13 Jun 2024 10:21:27 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 1/9] gdbstub: Clean up process_string_cmd Date: Thu, 13 Jun 2024 17:20:55 +0000 Message-Id: <20240613172103.2987519-2-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::631; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x631.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299374461100001 Content-Type: text/plain; charset="utf-8" Change 'process_string_cmd' to return true on success and false on failure, instead of 0 and -1. Signed-off-by: Gustavo Romero Reviewed-by: Alex Benn=C3=A9e --- gdbstub/gdbstub.c | 40 ++++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index b3574997ea..37314b92e5 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -962,14 +962,14 @@ static inline int startswith(const char *string, cons= t char *pattern) return !strncmp(string, pattern, strlen(pattern)); } =20 -static int process_string_cmd(const char *data, - const GdbCmdParseEntry *cmds, int num_cmds) +static bool process_string_cmd(const char *data, + const GdbCmdParseEntry *cmds, int num_cmds) { int i; g_autoptr(GArray) params =3D g_array_new(false, true, sizeof(GdbCmdVar= iant)); =20 if (!cmds) { - return -1; + return false; } =20 for (i =3D 0; i < num_cmds; i++) { @@ -984,16 +984,16 @@ static int process_string_cmd(const char *data, if (cmd->schema) { if (cmd_parse_params(&data[strlen(cmd->cmd)], cmd->schema, params)) { - return -1; + return false; } } =20 gdbserver_state.allow_stop_reply =3D cmd->allow_stop_reply; cmd->handler(params, NULL); - return 0; + return true; } =20 - return -1; + return false; } =20 static void run_cmd_parser(const char *data, const GdbCmdParseEntry *cmd) @@ -1007,7 +1007,7 @@ static void run_cmd_parser(const char *data, const Gd= bCmdParseEntry *cmd) =20 /* In case there was an error during the command parsing we must * send a NULL packet to indicate the command is not supported */ - if (process_string_cmd(data, cmd, 1)) { + if (!process_string_cmd(data, cmd, 1)) { gdb_put_packet(""); } } @@ -1523,9 +1523,9 @@ static void handle_v_commands(GArray *params, void *u= ser_ctx) return; } =20 - if (process_string_cmd(get_param(params, 0)->data, - gdb_v_commands_table, - ARRAY_SIZE(gdb_v_commands_table))) { + if (!process_string_cmd(get_param(params, 0)->data, + gdb_v_commands_table, + ARRAY_SIZE(gdb_v_commands_table))) { gdb_put_packet(""); } } @@ -1889,15 +1889,15 @@ static void handle_gen_query(GArray *params, void *= user_ctx) return; } =20 - if (!process_string_cmd(get_param(params, 0)->data, - gdb_gen_query_set_common_table, - ARRAY_SIZE(gdb_gen_query_set_common_table))) { + if (process_string_cmd(get_param(params, 0)->data, + gdb_gen_query_set_common_table, + ARRAY_SIZE(gdb_gen_query_set_common_table))) { return; } =20 - if (process_string_cmd(get_param(params, 0)->data, - gdb_gen_query_table, - ARRAY_SIZE(gdb_gen_query_table))) { + if (!process_string_cmd(get_param(params, 0)->data, + gdb_gen_query_table, + ARRAY_SIZE(gdb_gen_query_table))) { gdb_put_packet(""); } } @@ -1908,13 +1908,13 @@ static void handle_gen_set(GArray *params, void *us= er_ctx) return; } =20 - if (!process_string_cmd(get_param(params, 0)->data, - gdb_gen_query_set_common_table, - ARRAY_SIZE(gdb_gen_query_set_common_table))) { + if (process_string_cmd(get_param(params, 0)->data, + gdb_gen_query_set_common_table, + ARRAY_SIZE(gdb_gen_query_set_common_table))) { return; } =20 - if (process_string_cmd(get_param(params, 0)->data, + if (!process_string_cmd(get_param(params, 0)->data, gdb_gen_set_table, ARRAY_SIZE(gdb_gen_set_table))) { gdb_put_packet(""); 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([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299290; x=1718904090; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QLZzQ3DvFvzyweQTIeQUri8sy89Kt4aPtz5SQfGQIJ8=; b=EYI8x9u+0VAFcNS52DRK0loIR6JOP+UF4/IXawH7r3sm4SGl/arFTWtke9FQuzHxdl tHfiD42+1AfBTK++J/uFVYB3JIZmHN/QNCTKvLGpWb07kzaX+KD0NJYuDkTzKQNg9wQW baLkUctjGNrp+4i1k6bKgOQa7EEJv+m89pS4e4520L5TsasquX2CU1F8i8XhMNWM9zAN 6FUaUHNAUpBFQO4fDoxlBKeXE5oC5oi1F9iQSun561tGvKUdBoz1FpVAnSdn+t2v86eB 2O+AaLhqh+yEn9nvmtHnRqkjoEfRNdxEJem6fXCEfbTqoYre/NO2ZizTA2ZPgHcJVrkR 6a8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299290; x=1718904090; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QLZzQ3DvFvzyweQTIeQUri8sy89Kt4aPtz5SQfGQIJ8=; b=Qa8HBXDMIzoXqacBUqLVRjG9gyOh3WtY3NfPk8zvP1dQYu3kiLWe/hUqDH9nV4BgIz 9qhdRvKZ/lIWRjkLp8BzWCJM9H/LT0vg2QTHdOBCsP4EEHk0467jDPsJmY0LIcLO6ZT0 0zzr8gBHWtdFvMArxphEzLtqbgxkcRFUDRCIezlcmvLkvLmwh8liZGn80mI4zfovhMwp 3fWnf6IA1r6FkmWl/lH8mnzK1VNYPqJzJZ5VmcuQhDgv7eMGBbqRSIVxgXzrl+yZ61kM Bds4KpIle2EcJqHvhIG9suTNufMPai/mZYPMM04kriGpRTvezSHWWKSv+s8PF0TKrJBL uSBA== X-Gm-Message-State: AOJu0YyjKGZARWfgHxUE+aVFE1VBISNMSiMnDEWOHy8thInzDVfunfQ8 f+6Mgyif0u7Kks5WNns7g/05umUI0Q1O7V6HFNz+3IpcaWIvdeBm712buvkS32ILHPdLUPajRGf z X-Google-Smtp-Source: AGHT+IF+HE0QL6BXUOhutRej0h2aF10WcEq4PceddrHb9IFNC8A/XcKSVt3Rwsca4z7e7OdF2o2iHA== X-Received: by 2002:a17:902:ce8f:b0:1f6:3596:7c61 with SMTP id d9443c01a7336-1f8625d4ad9mr3728175ad.2.1718299290237; Thu, 13 Jun 2024 10:21:30 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 2/9] gdbstub: Move GdbCmdParseEntry into a new header file Date: Thu, 13 Jun 2024 17:20:56 +0000 Message-Id: <20240613172103.2987519-3-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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=gustavo.romero@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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299324323100009 Content-Type: text/plain; charset="utf-8" Move GdbCmdParseEntry and its associated types into a separate header file to allow the use of GdbCmdParseEntry and other gdbstub command functions outside of gdbstub.c. Since GdbCmdParseEntry and get_param are now public, kdoc GdbCmdParseEntry and rename get_param to gdb_get_cmd_param. This commit also makes gdb_put_packet public since is used in gdbstub command handling. Signed-off-by: Gustavo Romero Reviewed-by: Alex Benn=C3=A9e --- gdbstub/gdbstub.c | 134 ++++++++++++++----------------------- gdbstub/internals.h | 22 ------ gdbstub/syscalls.c | 7 +- gdbstub/system.c | 7 +- gdbstub/user-target.c | 25 +++---- gdbstub/user.c | 7 +- include/gdbstub/commands.h | 74 ++++++++++++++++++++ 7 files changed, 148 insertions(+), 128 deletions(-) create mode 100644 include/gdbstub/commands.h diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 37314b92e5..9ff2f4177d 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -30,6 +30,7 @@ #include "qemu/error-report.h" #include "trace.h" #include "exec/gdbstub.h" +#include "gdbstub/commands.h" #include "gdbstub/syscalls.h" #ifdef CONFIG_USER_ONLY #include "accel/tcg/vcpu-state.h" @@ -920,43 +921,6 @@ static int cmd_parse_params(const char *data, const ch= ar *schema, return 0; } =20 -typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx); - -/* - * cmd_startswith -> cmd is compared using startswith - * - * allow_stop_reply -> true iff the gdbstub can respond to this command wi= th a - * "stop reply" packet. The list of commands that accept such response is - * defined at the GDB Remote Serial Protocol documentation. see: - * https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Sto= p-Reply-Packets. - * - * schema definitions: - * Each schema parameter entry consists of 2 chars, - * the first char represents the parameter type handling - * the second char represents the delimiter for the next parameter - * - * Currently supported schema types: - * 'l' -> unsigned long (stored in .val_ul) - * 'L' -> unsigned long long (stored in .val_ull) - * 's' -> string (stored in .data) - * 'o' -> single char (stored in .opcode) - * 't' -> thread id (stored in .thread_id) - * '?' -> skip according to delimiter - * - * Currently supported delimiters: - * '?' -> Stop at any delimiter (",;:=3D\0") - * '0' -> Stop at "\0" - * '.' -> Skip 1 char unless reached "\0" - * Any other value is treated as the delimiter value itself - */ -typedef struct GdbCmdParseEntry { - GdbCmdHandler handler; - const char *cmd; - bool cmd_startswith; - const char *schema; - bool allow_stop_reply; -} GdbCmdParseEntry; - static inline int startswith(const char *string, const char *pattern) { return !strncmp(string, pattern, strlen(pattern)); @@ -1023,7 +987,7 @@ static void handle_detach(GArray *params, void *user_c= tx) return; } =20 - pid =3D get_param(params, 0)->val_ul; + pid =3D gdb_get_cmd_param(params, 0)->val_ul; } =20 #ifdef CONFIG_USER_ONLY @@ -1061,13 +1025,13 @@ static void handle_thread_alive(GArray *params, voi= d *user_ctx) return; } =20 - if (get_param(params, 0)->thread_id.kind =3D=3D GDB_READ_THREAD_ERR) { + if (gdb_get_cmd_param(params, 0)->thread_id.kind =3D=3D GDB_READ_THREA= D_ERR) { gdb_put_packet("E22"); return; } =20 - cpu =3D gdb_get_cpu(get_param(params, 0)->thread_id.pid, - get_param(params, 0)->thread_id.tid); + cpu =3D gdb_get_cpu(gdb_get_cmd_param(params, 0)->thread_id.pid, + gdb_get_cmd_param(params, 0)->thread_id.tid); if (!cpu) { gdb_put_packet("E22"); return; @@ -1079,7 +1043,7 @@ static void handle_thread_alive(GArray *params, void = *user_ctx) static void handle_continue(GArray *params, void *user_ctx) { if (params->len) { - gdb_set_cpu_pc(get_param(params, 0)->val_ull); + gdb_set_cpu_pc(gdb_get_cmd_param(params, 0)->val_ull); } =20 gdbserver_state.signal =3D 0; @@ -1095,7 +1059,7 @@ static void handle_cont_with_sig(GArray *params, void= *user_ctx) * omit the addr parameter */ if (params->len) { - signal =3D get_param(params, 0)->val_ul; + signal =3D gdb_get_cmd_param(params, 0)->val_ul; } =20 gdbserver_state.signal =3D gdb_signal_to_target(signal); @@ -1115,18 +1079,18 @@ static void handle_set_thread(GArray *params, void = *user_ctx) return; } =20 - if (get_param(params, 1)->thread_id.kind =3D=3D GDB_READ_THREAD_ERR) { + if (gdb_get_cmd_param(params, 1)->thread_id.kind =3D=3D GDB_READ_THREA= D_ERR) { gdb_put_packet("E22"); return; } =20 - if (get_param(params, 1)->thread_id.kind !=3D GDB_ONE_THREAD) { + if (gdb_get_cmd_param(params, 1)->thread_id.kind !=3D GDB_ONE_THREAD) { gdb_put_packet("OK"); return; } =20 - pid =3D get_param(params, 1)->thread_id.pid; - tid =3D get_param(params, 1)->thread_id.tid; + pid =3D gdb_get_cmd_param(params, 1)->thread_id.pid; + tid =3D gdb_get_cmd_param(params, 1)->thread_id.tid; #ifdef CONFIG_USER_ONLY if (gdb_handle_set_thread_user(pid, tid)) { return; @@ -1142,7 +1106,7 @@ static void handle_set_thread(GArray *params, void *u= ser_ctx) * Note: This command is deprecated and modern gdb's will be using the * vCont command instead. */ - switch (get_param(params, 0)->opcode) { + switch (gdb_get_cmd_param(params, 0)->opcode) { case 'c': gdbserver_state.c_cpu =3D cpu; gdb_put_packet("OK"); @@ -1167,9 +1131,9 @@ static void handle_insert_bp(GArray *params, void *us= er_ctx) } =20 res =3D gdb_breakpoint_insert(gdbserver_state.c_cpu, - get_param(params, 0)->val_ul, - get_param(params, 1)->val_ull, - get_param(params, 2)->val_ull); + gdb_get_cmd_param(params, 0)->val_ul, + gdb_get_cmd_param(params, 1)->val_ull, + gdb_get_cmd_param(params, 2)->val_ull); if (res >=3D 0) { gdb_put_packet("OK"); return; @@ -1191,9 +1155,9 @@ static void handle_remove_bp(GArray *params, void *us= er_ctx) } =20 res =3D gdb_breakpoint_remove(gdbserver_state.c_cpu, - get_param(params, 0)->val_ul, - get_param(params, 1)->val_ull, - get_param(params, 2)->val_ull); + gdb_get_cmd_param(params, 0)->val_ul, + gdb_get_cmd_param(params, 1)->val_ull, + gdb_get_cmd_param(params, 2)->val_ull); if (res >=3D 0) { gdb_put_packet("OK"); return; @@ -1225,10 +1189,10 @@ static void handle_set_reg(GArray *params, void *us= er_ctx) return; } =20 - reg_size =3D strlen(get_param(params, 1)->data) / 2; - gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 1)->data, reg_= size); + reg_size =3D strlen(gdb_get_cmd_param(params, 1)->data) / 2; + gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 1)->da= ta, reg_size); gdb_write_register(gdbserver_state.g_cpu, gdbserver_state.mem_buf->dat= a, - get_param(params, 0)->val_ull); + gdb_get_cmd_param(params, 0)->val_ull); gdb_put_packet("OK"); } =20 @@ -1243,7 +1207,7 @@ static void handle_get_reg(GArray *params, void *user= _ctx) =20 reg_size =3D gdb_read_register(gdbserver_state.g_cpu, gdbserver_state.mem_buf, - get_param(params, 0)->val_ull); + gdb_get_cmd_param(params, 0)->val_ull); if (!reg_size) { gdb_put_packet("E14"); return; @@ -1264,16 +1228,16 @@ static void handle_write_mem(GArray *params, void *= user_ctx) } =20 /* gdb_hextomem() reads 2*len bytes */ - if (get_param(params, 1)->val_ull > - strlen(get_param(params, 2)->data) / 2) { + if (gdb_get_cmd_param(params, 1)->val_ull > + strlen(gdb_get_cmd_param(params, 2)->data) / 2) { gdb_put_packet("E22"); return; } =20 - gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 2)->data, - get_param(params, 1)->val_ull); + gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 2)->da= ta, + gdb_get_cmd_param(params, 1)->val_ull); if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu, - get_param(params, 0)->val_ull, + gdb_get_cmd_param(params, 0)->val_ull, gdbserver_state.mem_buf->data, gdbserver_state.mem_buf->len, true)) { gdb_put_packet("E14"); @@ -1291,16 +1255,16 @@ static void handle_read_mem(GArray *params, void *u= ser_ctx) } =20 /* gdb_memtohex() doubles the required space */ - if (get_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) { + if (gdb_get_cmd_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) { gdb_put_packet("E22"); return; } =20 g_byte_array_set_size(gdbserver_state.mem_buf, - get_param(params, 1)->val_ull); + gdb_get_cmd_param(params, 1)->val_ull); =20 if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu, - get_param(params, 0)->val_ull, + gdb_get_cmd_param(params, 0)->val_ull, gdbserver_state.mem_buf->data, gdbserver_state.mem_buf->len, false)) { gdb_put_packet("E14"); @@ -1324,8 +1288,8 @@ static void handle_write_all_regs(GArray *params, voi= d *user_ctx) } =20 cpu_synchronize_state(gdbserver_state.g_cpu); - len =3D strlen(get_param(params, 0)->data) / 2; - gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len); + len =3D strlen(gdb_get_cmd_param(params, 0)->data) / 2; + gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 0)->da= ta, len); registers =3D gdbserver_state.mem_buf->data; for (reg_id =3D 0; reg_id < gdbserver_state.g_cpu->gdb_num_g_regs && len > 0; @@ -1360,7 +1324,7 @@ static void handle_read_all_regs(GArray *params, void= *user_ctx) static void handle_step(GArray *params, void *user_ctx) { if (params->len) { - gdb_set_cpu_pc(get_param(params, 0)->val_ull); + gdb_set_cpu_pc(gdb_get_cmd_param(params, 0)->val_ull); } =20 cpu_single_step(gdbserver_state.c_cpu, gdbserver_state.sstep_flags); @@ -1373,7 +1337,7 @@ static void handle_backward(GArray *params, void *use= r_ctx) gdb_put_packet("E22"); } if (params->len =3D=3D 1) { - switch (get_param(params, 0)->opcode) { + switch (gdb_get_cmd_param(params, 0)->opcode) { case 's': if (replay_reverse_step()) { gdb_continue(); @@ -1408,7 +1372,7 @@ static void handle_v_cont(GArray *params, void *user_= ctx) return; } =20 - res =3D gdb_handle_vcont(get_param(params, 0)->data); + res =3D gdb_handle_vcont(gdb_get_cmd_param(params, 0)->data); if ((res =3D=3D -EINVAL) || (res =3D=3D -ERANGE)) { gdb_put_packet("E22"); } else if (res) { @@ -1426,7 +1390,7 @@ static void handle_v_attach(GArray *params, void *use= r_ctx) goto cleanup; } =20 - process =3D gdb_get_process(get_param(params, 0)->val_ul); + process =3D gdb_get_process(gdb_get_cmd_param(params, 0)->val_ul); if (!process) { goto cleanup; } @@ -1523,7 +1487,7 @@ static void handle_v_commands(GArray *params, void *u= ser_ctx) return; } =20 - if (!process_string_cmd(get_param(params, 0)->data, + if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_v_commands_table, ARRAY_SIZE(gdb_v_commands_table))) { gdb_put_packet(""); @@ -1555,7 +1519,7 @@ static void handle_set_qemu_sstep(GArray *params, voi= d *user_ctx) return; } =20 - new_sstep_flags =3D get_param(params, 0)->val_ul; + new_sstep_flags =3D gdb_get_cmd_param(params, 0)->val_ul; =20 if (new_sstep_flags & ~gdbserver_state.supported_sstep_flags) { gdb_put_packet("E22"); @@ -1615,13 +1579,13 @@ static void handle_query_thread_extra(GArray *param= s, void *user_ctx) CPUState *cpu; =20 if (!params->len || - get_param(params, 0)->thread_id.kind =3D=3D GDB_READ_THREAD_ERR) { + gdb_get_cmd_param(params, 0)->thread_id.kind =3D=3D GDB_READ_THREA= D_ERR) { gdb_put_packet("E22"); return; } =20 - cpu =3D gdb_get_cpu(get_param(params, 0)->thread_id.pid, - get_param(params, 0)->thread_id.tid); + cpu =3D gdb_get_cpu(gdb_get_cmd_param(params, 0)->thread_id.pid, + gdb_get_cmd_param(params, 0)->thread_id.tid); if (!cpu) { return; } @@ -1673,7 +1637,7 @@ static void handle_query_supported(GArray *params, vo= id *user_ctx) #endif =20 if (params->len) { - const char *gdb_supported =3D get_param(params, 0)->data; + const char *gdb_supported =3D gdb_get_cmd_param(params, 0)->data; =20 if (strstr(gdb_supported, "multiprocess+")) { gdbserver_state.multiprocess =3D true; @@ -1707,15 +1671,15 @@ static void handle_query_xfer_features(GArray *para= ms, void *user_ctx) return; } =20 - p =3D get_param(params, 0)->data; + p =3D gdb_get_cmd_param(params, 0)->data; xml =3D get_feature_xml(p, &p, process); if (!xml) { gdb_put_packet("E00"); return; } =20 - addr =3D get_param(params, 1)->val_ul; - len =3D get_param(params, 2)->val_ul; + addr =3D gdb_get_cmd_param(params, 1)->val_ul; + len =3D gdb_get_cmd_param(params, 2)->val_ul; total_len =3D strlen(xml); if (addr > total_len) { gdb_put_packet("E00"); @@ -1889,13 +1853,13 @@ static void handle_gen_query(GArray *params, void *= user_ctx) return; } =20 - if (process_string_cmd(get_param(params, 0)->data, + if (process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_gen_query_set_common_table, ARRAY_SIZE(gdb_gen_query_set_common_table))) { return; } =20 - if (!process_string_cmd(get_param(params, 0)->data, + if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_gen_query_table, ARRAY_SIZE(gdb_gen_query_table))) { gdb_put_packet(""); @@ -1908,13 +1872,13 @@ static void handle_gen_set(GArray *params, void *us= er_ctx) return; } =20 - if (process_string_cmd(get_param(params, 0)->data, + if (process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_gen_query_set_common_table, ARRAY_SIZE(gdb_gen_query_set_common_table))) { return; } =20 - if (!process_string_cmd(get_param(params, 0)->data, + if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_gen_set_table, ARRAY_SIZE(gdb_gen_set_table))) { gdb_put_packet(""); diff --git a/gdbstub/internals.h b/gdbstub/internals.h index 32f9f63297..34121dc61a 100644 --- a/gdbstub/internals.h +++ b/gdbstub/internals.h @@ -106,7 +106,6 @@ static inline int tohex(int v) */ =20 void gdb_put_strbuf(void); -int gdb_put_packet(const char *buf); int gdb_put_packet_binary(const char *buf, int len, bool dump); void gdb_hextomem(GByteArray *mem, const char *buf, int len); void gdb_memtohex(GString *buf, const uint8_t *mem, int len); @@ -166,27 +165,6 @@ void gdb_put_buffer(const uint8_t *buf, int len); */ void gdb_init_gdbserver_state(void); =20 -typedef enum GDBThreadIdKind { - GDB_ONE_THREAD =3D 0, - GDB_ALL_THREADS, /* One process, all threads */ - GDB_ALL_PROCESSES, - GDB_READ_THREAD_ERR -} GDBThreadIdKind; - -typedef union GdbCmdVariant { - const char *data; - uint8_t opcode; - unsigned long val_ul; - unsigned long long val_ull; - struct { - GDBThreadIdKind kind; - uint32_t pid; - uint32_t tid; - } thread_id; -} GdbCmdVariant; - -#define get_param(p, i) (&g_array_index(p, GdbCmdVariant, i)) - void gdb_handle_query_rcmd(GArray *params, void *ctx); /* system */ void gdb_handle_query_offsets(GArray *params, void *user_ctx); /* user */ void gdb_handle_query_xfer_auxv(GArray *params, void *user_ctx); /*user */ diff --git a/gdbstub/syscalls.c b/gdbstub/syscalls.c index 02e3a8f74c..4e1295b782 100644 --- a/gdbstub/syscalls.c +++ b/gdbstub/syscalls.c @@ -16,6 +16,7 @@ #include "sysemu/runstate.h" #include "gdbstub/user.h" #include "gdbstub/syscalls.h" +#include "gdbstub/commands.h" #include "trace.h" #include "internals.h" =20 @@ -154,9 +155,9 @@ void gdb_handle_file_io(GArray *params, void *user_ctx) uint64_t ret; int err; =20 - ret =3D get_param(params, 0)->val_ull; + ret =3D gdb_get_cmd_param(params, 0)->val_ull; if (params->len >=3D 2) { - err =3D get_param(params, 1)->val_ull; + err =3D gdb_get_cmd_param(params, 1)->val_ull; } else { err =3D 0; } @@ -196,7 +197,7 @@ void gdb_handle_file_io(GArray *params, void *user_ctx) gdbserver_syscall_state.current_syscall_cb =3D NULL; } =20 - if (params->len >=3D 3 && get_param(params, 2)->opcode =3D=3D (uint8_t= )'C') { + if (params->len >=3D 3 && gdb_get_cmd_param(params, 2)->opcode =3D=3D = (uint8_t)'C') { gdb_put_packet("T02"); return; } diff --git a/gdbstub/system.c b/gdbstub/system.c index d235403855..1ad87fe7fd 100644 --- a/gdbstub/system.c +++ b/gdbstub/system.c @@ -16,6 +16,7 @@ #include "qemu/cutils.h" #include "exec/gdbstub.h" #include "gdbstub/syscalls.h" +#include "gdbstub/commands.h" #include "exec/hwaddr.h" #include "exec/tb-flush.h" #include "sysemu/cpus.h" @@ -501,7 +502,7 @@ void gdb_handle_set_qemu_phy_mem_mode(GArray *params, v= oid *ctx) return; } =20 - if (!get_param(params, 0)->val_ul) { + if (!gdb_get_cmd_param(params, 0)->val_ul) { phy_memory_mode =3D 0; } else { phy_memory_mode =3D 1; @@ -519,7 +520,7 @@ void gdb_handle_query_rcmd(GArray *params, void *ctx) return; } =20 - len =3D strlen(get_param(params, 0)->data); + len =3D strlen(gdb_get_cmd_param(params, 0)->data); if (len % 2) { gdb_put_packet("E01"); return; @@ -527,7 +528,7 @@ void gdb_handle_query_rcmd(GArray *params, void *ctx) =20 g_assert(gdbserver_state.mem_buf->len =3D=3D 0); len =3D len / 2; - gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len); + gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 0)->da= ta, len); g_byte_array_append(gdbserver_state.mem_buf, &zero, 1); qemu_chr_be_write(gdbserver_system_state.mon_chr, gdbserver_state.mem_buf->data, diff --git a/gdbstub/user-target.c b/gdbstub/user-target.c index a9c6c64512..b5e01fd8b0 100644 --- a/gdbstub/user-target.c +++ b/gdbstub/user-target.c @@ -9,6 +9,7 @@ =20 #include "qemu/osdep.h" #include "exec/gdbstub.h" +#include "gdbstub/commands.h" #include "qemu.h" #include "internals.h" #ifdef CONFIG_LINUX @@ -250,8 +251,8 @@ void gdb_handle_query_xfer_auxv(GArray *params, void *u= ser_ctx) return; } =20 - offset =3D get_param(params, 0)->val_ul; - len =3D get_param(params, 1)->val_ul; + offset =3D gdb_get_cmd_param(params, 0)->val_ul; + len =3D gdb_get_cmd_param(params, 1)->val_ul; ts =3D get_task_state(gdbserver_state.c_cpu); saved_auxv =3D ts->info->saved_auxv; auxv_len =3D ts->info->auxv_len; @@ -288,7 +289,7 @@ void gdb_handle_query_xfer_auxv(GArray *params, void *u= ser_ctx) =20 static const char *get_filename_param(GArray *params, int i) { - const char *hex_filename =3D get_param(params, i)->data; + const char *hex_filename =3D gdb_get_cmd_param(params, i)->data; gdb_hextomem(gdbserver_state.mem_buf, hex_filename, strlen(hex_filename) / 2); g_byte_array_append(gdbserver_state.mem_buf, (const guint8 *)"", 1); @@ -306,8 +307,8 @@ static void hostio_reply_with_data(const void *buf, siz= e_t n) void gdb_handle_v_file_open(GArray *params, void *user_ctx) { const char *filename =3D get_filename_param(params, 0); - uint64_t flags =3D get_param(params, 1)->val_ull; - uint64_t mode =3D get_param(params, 2)->val_ull; + uint64_t flags =3D gdb_get_cmd_param(params, 1)->val_ull; + uint64_t mode =3D gdb_get_cmd_param(params, 2)->val_ull; =20 #ifdef CONFIG_LINUX int fd =3D do_guest_openat(cpu_env(gdbserver_state.g_cpu), 0, filename, @@ -325,7 +326,7 @@ void gdb_handle_v_file_open(GArray *params, void *user_= ctx) =20 void gdb_handle_v_file_close(GArray *params, void *user_ctx) { - int fd =3D get_param(params, 0)->val_ul; + int fd =3D gdb_get_cmd_param(params, 0)->val_ul; =20 if (close(fd) =3D=3D -1) { g_string_printf(gdbserver_state.str_buf, "F-1,%d", errno); @@ -338,9 +339,9 @@ void gdb_handle_v_file_close(GArray *params, void *user= _ctx) =20 void gdb_handle_v_file_pread(GArray *params, void *user_ctx) { - int fd =3D get_param(params, 0)->val_ul; - size_t count =3D get_param(params, 1)->val_ull; - off_t offset =3D get_param(params, 2)->val_ull; + int fd =3D gdb_get_cmd_param(params, 0)->val_ul; + size_t count =3D gdb_get_cmd_param(params, 1)->val_ull; + off_t offset =3D gdb_get_cmd_param(params, 2)->val_ull; =20 size_t bufsiz =3D MIN(count, BUFSIZ); g_autofree char *buf =3D g_try_malloc(bufsiz); @@ -383,9 +384,9 @@ void gdb_handle_v_file_readlink(GArray *params, void *u= ser_ctx) =20 void gdb_handle_query_xfer_exec_file(GArray *params, void *user_ctx) { - uint32_t pid =3D get_param(params, 0)->val_ul; - uint32_t offset =3D get_param(params, 1)->val_ul; - uint32_t length =3D get_param(params, 2)->val_ul; + uint32_t pid =3D gdb_get_cmd_param(params, 0)->val_ul; + uint32_t offset =3D gdb_get_cmd_param(params, 1)->val_ul; + uint32_t length =3D gdb_get_cmd_param(params, 2)->val_ul; =20 GDBProcess *process =3D gdb_get_process(pid); if (!process) { diff --git a/gdbstub/user.c b/gdbstub/user.c index e34b58b407..b36033bc7a 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -16,6 +16,7 @@ #include "exec/hwaddr.h" #include "exec/tb-flush.h" #include "exec/gdbstub.h" +#include "gdbstub/commands.h" #include "gdbstub/syscalls.h" #include "gdbstub/user.h" #include "gdbstub/enums.h" @@ -793,7 +794,7 @@ void gdb_syscall_return(CPUState *cs, int num) =20 void gdb_handle_set_catch_syscalls(GArray *params, void *user_ctx) { - const char *param =3D get_param(params, 0)->data; + const char *param =3D gdb_get_cmd_param(params, 0)->data; GDBSyscallsMask catch_syscalls_mask; bool catch_all_syscalls; unsigned int num; @@ -858,8 +859,8 @@ void gdb_handle_query_xfer_siginfo(GArray *params, void= *user_ctx) unsigned long offset, len; uint8_t *siginfo_offset; =20 - offset =3D get_param(params, 0)->val_ul; - len =3D get_param(params, 1)->val_ul; + offset =3D gdb_get_cmd_param(params, 0)->val_ul; + len =3D gdb_get_cmd_param(params, 1)->val_ul; =20 if (offset + len > gdbserver_user_state.siginfo_len) { /* Invalid offset and/or requested length. */ diff --git a/include/gdbstub/commands.h b/include/gdbstub/commands.h new file mode 100644 index 0000000000..dd45c38472 --- /dev/null +++ b/include/gdbstub/commands.h @@ -0,0 +1,74 @@ +#ifndef GDBSTUB_COMMANDS_H +#define GDBSTUB + +typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx); + +typedef enum GDBThreadIdKind { + GDB_ONE_THREAD =3D 0, + GDB_ALL_THREADS, /* One process, all threads */ + GDB_ALL_PROCESSES, + GDB_READ_THREAD_ERR +} GDBThreadIdKind; + +typedef union GdbCmdVariant { + const char *data; + uint8_t opcode; + unsigned long val_ul; + unsigned long long val_ull; + struct { + GDBThreadIdKind kind; + uint32_t pid; + uint32_t tid; + } thread_id; +} GdbCmdVariant; + +#define gdb_get_cmd_param(p, i) (&g_array_index(p, GdbCmdVariant, i)) + +/** + * typedef GdbCmdParseEntry - gdb command parser + * + * This structure keeps the information necessary to match a gdb command, + * parse it (extract its parameters), and select the correct handler for i= t. + * + * @cmd: The command to be matched + * @cmd_startswith: If true, @cmd is compared using startswith + * @schema: Each schema for the command parameter entry consists of 2 char= s, + * the first char represents the parameter type handling the second char + * represents the delimiter for the next parameter. + * + * Currently supported schema types: + * 'l' -> unsigned long (stored in .val_ul) + * 'L' -> unsigned long long (stored in .val_ull) + * 's' -> string (stored in .data) + * 'o' -> single char (stored in .opcode) + * 't' -> thread id (stored in .thread_id) + * '?' -> skip according to delimiter + * + * Currently supported delimiters: + * '?' -> Stop at any delimiter (",;:=3D\0") + * '0' -> Stop at "\0" + * '.' -> Skip 1 char unless reached "\0" + * Any other value is treated as the delimiter value itself + * + * @allow_stop_reply: True iff the gdbstub can respond to this command wit= h a + * "stop reply" packet. The list of commands that accept such response is + * defined at the GDB Remote Serial Protocol documentation. See: + * https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-= Reply-Packets. + */ +typedef struct GdbCmdParseEntry { + GdbCmdHandler handler; + const char *cmd; + bool cmd_startswith; + const char *schema; + bool allow_stop_reply; +} GdbCmdParseEntry; + +#define get_cmd_parsers(p) (&g_array_index(p, GdbCmdParseEntry, 0)) + +/** + * gdb_put_packet() - put string into gdb server's buffer so it is sent + * to the client + */ +int gdb_put_packet(const char *buf); + +#endif /* GDBSTUB_COMMANDS_H */ --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299337; cv=none; d=zohomail.com; s=zohoarc; b=nps7jkhxNgqhJXxJM+AidW283+dPD/XMYkggKlyreYpUlpz0sm2ahQfoMBPWMahwrAo0t9kn9SpGHA7E6MhxgNKysF3frDHd/t40tieA5n2T/Ml3V7QZfVnw0ArFySIgNRUmmuHY5PxUYc5Ex1gM4kjmdUWf99GbuzoJUamJ3/4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299337; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=I4X1Q5LR9CyzMxkopn2wmWu6BnVGz6FW4Yqv/puuawE=; b=P1FCGll/0nsc6QeD19bAu+1WgtSa/Pe+l6UXhiDoXIvYjDnHo63fgBjRWeq7mnTSkkSqf2ABrTIXwBNe35ZNsM/LUDpLHOEQHMiziSSAi58k/Zmsu4NQCRAYlB7/H4EPWODFskJOUYHpJqsJTxfFSY7hWzVTKmUvy3CpCBOWLwo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718299337191455.59240431609146; Thu, 13 Jun 2024 10:22:17 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8o-0000fJ-9r; Thu, 13 Jun 2024 13:21:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8m-0000dq-MM for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:36 -0400 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8k-0005pi-9D for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:36 -0400 Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1f70131063cso12235375ad.2 for ; Thu, 13 Jun 2024 10:21:33 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299293; x=1718904093; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=I4X1Q5LR9CyzMxkopn2wmWu6BnVGz6FW4Yqv/puuawE=; b=p2OrYXpR1HkR8nJzBJhXud+xUm70qYR/82yxBtfKTMA0VESxFhj56qzwWDkAxfKNtJ +Dgfb7OsSYJHoa3NpWewuw5B73NduD+MU9PlX06GlgbzJs/kV8EH3RRt6HLI7X7BS7fC uh3yJB6sQfXE1l96XK8cpZctWBsiDpfv5Np9aAJTEzCFP9Dk/MnA13/eOVlBhlaQA5i3 NYizkRjqIL4Tvwcr0u8TmIRv54SDmlCCTZ3K293xLIIgxhpSDtoPbuAdyuVkP6n/Y2bq 2BXqG14HzpUfDf7HsuJNjAE7Fc35KYgu5bLsJSZ0/pDaVfTbNDZdzDb5IJaZmdX/YvF0 D7Ig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299293; x=1718904093; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=I4X1Q5LR9CyzMxkopn2wmWu6BnVGz6FW4Yqv/puuawE=; b=uuqq/OAB3qmAPQgGAqhAJoMf7bQ5qVyFBRpolMg1/05eDEMW/LoRErH+tsAMvQydYV d19fCbykw5KJEZhuv3buWIXnHfTU1ScgkbYEGCzyiq8BcfmdqhxJG8AHvzq+5zHrVsQx H2/YgF7N73F+/043kIBt8i+TP/UOSwGbaB1PIpbVniRS+qhBCcVfvVJFq+zzsUZAMyOI XzkApHNYptFXS7qJsXcBeJdvDjsFQp64laBxsrun06aIR6UfJmPDHMjY2jG9Fr1GBMUM +ft+lK5PFgWkImpkhg4FWlWoX+90DMEXEihc1tCgYNiy1477kNpI26yGUG242NZOrK7o 4ebw== X-Gm-Message-State: AOJu0YyEahZSdil0T0/wYZDjF5ELQPrLEPrcmpuQ4Unfph3d6AUtcRnC wHAswmgRfJn8eXTg1ElN546ilxObdUzgHVEdoALrTOuMElCWfCOstsATtU47VGeqL/YEL4MlXul L X-Google-Smtp-Source: AGHT+IEJZimLwNKCk2RVUZo+iWQmCfWbpm1Awa0enFfC+T1lhos71YaT/CvSFlWQV+OdXVkZg3jWNg== X-Received: by 2002:a17:903:2451:b0:1f8:52c2:3461 with SMTP id d9443c01a7336-1f8627da703mr3532695ad.30.1718299292657; Thu, 13 Jun 2024 10:21:32 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 3/9] gdbstub: Add support for target-specific stubs Date: Thu, 13 Jun 2024 17:20:57 +0000 Message-Id: <20240613172103.2987519-4-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::62c; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x62c.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299338350100003 Content-Type: text/plain; charset="utf-8" Currently, it's not possible to have stubs specific to a given target, even though there are GDB features which are target-specific, like, for instance, memory tagging. This commit introduces gdb_extend_qsupported_features, gdb_extend_query_table, and gdb_extend_set_table functions as interfaces to extend the qSupported string, the query handler table, and the set handler table, allowing target-specific stub implementations. Signed-off-by: Gustavo Romero --- gdbstub/gdbstub.c | 59 ++++++++++++++++++++++++++++++++++---- include/gdbstub/commands.h | 22 ++++++++++++++ 2 files changed, 75 insertions(+), 6 deletions(-) diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 9ff2f4177d..e69cc5131e 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -1609,6 +1609,12 @@ static void handle_query_thread_extra(GArray *params= , void *user_ctx) gdb_put_strbuf(); } =20 +static char *extended_qsupported_features; +void gdb_extend_qsupported_features(char *qsupported_features) +{ + extended_qsupported_features =3D qsupported_features; +} + static void handle_query_supported(GArray *params, void *user_ctx) { CPUClass *cc; @@ -1648,6 +1654,11 @@ static void handle_query_supported(GArray *params, v= oid *user_ctx) } =20 g_string_append(gdbserver_state.str_buf, ";vContSupported+;multiproces= s+"); + + if (extended_qsupported_features) { + g_string_append(gdbserver_state.str_buf, extended_qsupported_featu= res); + } + gdb_put_strbuf(); } =20 @@ -1729,6 +1740,14 @@ static const GdbCmdParseEntry gdb_gen_query_set_comm= on_table[] =3D { }, }; =20 +static GdbCmdParseEntry *extended_query_table; +static int extended_query_table_size; +void gdb_extend_query_table(GdbCmdParseEntry *table, int size) +{ + extended_query_table =3D table; + extended_query_table_size =3D size; +} + static const GdbCmdParseEntry gdb_gen_query_table[] =3D { { .handler =3D handle_query_curr_tid, @@ -1821,6 +1840,14 @@ static const GdbCmdParseEntry gdb_gen_query_table[] = =3D { #endif }; =20 +static GdbCmdParseEntry *extended_set_table; +static int extended_set_table_size; +void gdb_extend_set_table(GdbCmdParseEntry *table, int size) +{ + extended_set_table =3D table; + extended_set_table_size =3D size; +} + static const GdbCmdParseEntry gdb_gen_set_table[] =3D { /* Order is important if has same prefix */ { @@ -1859,11 +1886,21 @@ static void handle_gen_query(GArray *params, void *= user_ctx) return; } =20 - if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data, - gdb_gen_query_table, - ARRAY_SIZE(gdb_gen_query_table))) { - gdb_put_packet(""); + if (process_string_cmd(gdb_get_cmd_param(params, 0)->data, + gdb_gen_query_table, + ARRAY_SIZE(gdb_gen_query_table))) { + return; + } + + if (extended_query_table && + process_string_cmd(gdb_get_cmd_param(params, 0)->data, + extended_query_table, + extended_query_table_size)) { + return; } + + /* Can't handle query, return Empty response. */ + gdb_put_packet(""); } =20 static void handle_gen_set(GArray *params, void *user_ctx) @@ -1878,11 +1915,21 @@ static void handle_gen_set(GArray *params, void *us= er_ctx) return; } =20 - if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data, + if (process_string_cmd(gdb_get_cmd_param(params, 0)->data, gdb_gen_set_table, ARRAY_SIZE(gdb_gen_set_table))) { - gdb_put_packet(""); + return; } + + if (extended_set_table && + process_string_cmd(gdb_get_cmd_param(params, 0)->data, + extended_set_table, + extended_set_table_size)) { + return; + } + + /* Can't handle set, return Empty response. */ + gdb_put_packet(""); } =20 static void handle_target_halt(GArray *params, void *user_ctx) diff --git a/include/gdbstub/commands.h b/include/gdbstub/commands.h index dd45c38472..2204c3ddbe 100644 --- a/include/gdbstub/commands.h +++ b/include/gdbstub/commands.h @@ -71,4 +71,26 @@ typedef struct GdbCmdParseEntry { */ int gdb_put_packet(const char *buf); =20 +/** + * gdb_extend_query_table() - Extend query table. + * @table: The table with the additional query packet handlers. + * @size: The number of handlers to be added. + */ +void gdb_extend_query_table(GdbCmdParseEntry *table, int size); + +/** + * gdb_extend_set_table() - Extend set table. + * @table: The table with the additional set packet handlers. + * @size: The number of handlers to be added. + */ +void gdb_extend_set_table(GdbCmdParseEntry *table, int size); + +/** + * gdb_extend_qsupported_features() - Extend the qSupported features strin= g. + * @qsupported_features: The additional qSupported feature(s) string. The = string + * should start with a semicolon and, if there are more than one feature, = the + * features should be separate by a semiocolon. + */ +void gdb_extend_qsupported_features(char *qsupported_features); + #endif /* GDBSTUB_COMMANDS_H */ --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299383; cv=none; d=zohomail.com; s=zohoarc; b=AOO2TCu3SRdZZLeH0yFTDdlHRWNuNiyLJ59LDMyb59qBMy0ui7faaie35ErbFM1J8U1cMylBAucfdLsRFe40AqrPTLnBWMasDWXw0JzMmdbrYSRH3etlXU4b0UZcgE6gNTcvvzcUGcYXg85+fidkrVU8QHfXDVaChxa1AoCwCbs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299383; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=04DwH8iRtH8HRKfvqAVHCt4qHmUcr5TXQeOZHTbNSLI=; b=UhOPkq3iVRorcN+ey7nGslR82KZnb4qIGG5KeAGAZu5KpZ0B3mbV6DEAjfMlwTFoQvxHxizIAvGzgDHbtS6XxOQ5Cgr0ks13cek9CVzbSpT1KCGWgsGGG6E1aWdFkVmrzpuFguh2S1GNQMFxU1NzAFWVhOBbNOvGeIaZPKfgKi0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17182993836541005.2451253189213; Thu, 13 Jun 2024 10:23:03 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8q-0000gK-6l; Thu, 13 Jun 2024 13:21:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8o-0000ex-54 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:38 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8m-0005qb-KG for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:37 -0400 Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1f7028196f2so11155525ad.2 for ; Thu, 13 Jun 2024 10:21:36 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299295; x=1718904095; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=04DwH8iRtH8HRKfvqAVHCt4qHmUcr5TXQeOZHTbNSLI=; b=euAZXan1f60AgVpYPUm943RNbH7ePh1MEyZOsHzuAw+Kc6VnUJ54LjZic98z+ehx6A CpnxGIP6VDAHa1uFmkdGGkwBGAGS3pxM32sZ+932NcV9NPUsnXLMv8E1+jnhDsiGEDua WP6mPDpxz99nL1yjtjqRB4PmUOn4WvrHCGh6lSN+OpB4TonOLGoICUt00q7ai1EODicO vcWRNr05a3DB+4BivZTUtycsVO64w6WKwOiczsrfUxbOM8+jjWRX019lvRiDq1frpjBK inyH/+z2O/bWZKM2TVstbXjvxB5qDbonPe8kjutmKnLhavIsGxKx5gkrTc4/pYpa+oQl 2ENA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299295; x=1718904095; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=04DwH8iRtH8HRKfvqAVHCt4qHmUcr5TXQeOZHTbNSLI=; b=CbVXrrjH7AXZAUF4Dpxy+7gl93wwde5Yb27gnm5MLe64woOjPK0HYC3o+cFeCAz1Tc U/JtQ+tuJZUuCX69X2Nzsrn23oDCJ/xCn1b9a4H996ExIIdSr5aboFYbchgSOSdCWavB H/hewClE4CFB3rKb0rcKVdCzV/ucIjkoWpA4wQdI6pDeWs/9I8DN0ay/E2dR9F5QQYlB zQSz8V5fmAs5VjByoMK+4KOACK1ODOnJZmTj0bTZ99VAN7CVZyBuL8eohOANuZje1Esj tvaHu3bdrN2Qeg1Pn+s2fjV2xxYyd9jeSY2vhi1gPneWFQ7inEmaNtHaFvRmJeyNGETe Nr3A== X-Gm-Message-State: AOJu0YyoO9WLJ0tyJ83tEJHcuPuN2pSGgFuiouZKMG5CIDGxYQGVnvo6 Xc8Z51JO6L4XGhNJmNy6X/890ytbaJQ6b/KWWkUlEINZXstqp2f8MLYLMwnB7nQoXhVK18PGs/t S X-Google-Smtp-Source: AGHT+IECMN8MvkQWM9azGcvhfnp5IprnFSwURbLJmL5ebvv8trCfgzkKYeEoHDebH17LtVYyjwFJ+g== X-Received: by 2002:a17:902:e804:b0:1f7:171e:5264 with SMTP id d9443c01a7336-1f8625c0649mr3365135ad.4.1718299294939; Thu, 13 Jun 2024 10:21:34 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 4/9] target/arm: Fix exception case in allocation_tag_mem_probe Date: Thu, 13 Jun 2024 17:20:58 +0000 Message-Id: <20240613172103.2987519-5-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::631; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x631.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299384594100003 Content-Type: text/plain; charset="utf-8" If page in 'ptr_access' is inaccessible and probe is 'true' allocation_tag_mem_probe should not throw an exception, but currently it does, so fix it. Signed-off-by: Gustavo Romero Reviewed-by: Alex Benn=C3=A9e --- target/arm/tcg/mte_helper.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/arm/tcg/mte_helper.c b/target/arm/tcg/mte_helper.c index 037ac6dd60..a50d576294 100644 --- a/target/arm/tcg/mte_helper.c +++ b/target/arm/tcg/mte_helper.c @@ -96,6 +96,9 @@ static uint8_t *allocation_tag_mem_probe(CPUARMState *env= , int ptr_mmu_idx, assert(!(probe && ra)); =20 if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { + if (probe) { + return NULL; + } cpu_loop_exit_sigsegv(env_cpu(env), ptr, ptr_access, !(flags & PAGE_VALID), ra); } --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299386; cv=none; d=zohomail.com; s=zohoarc; b=HJiDEex8TfeP/aysDQxpfSk0kvKydq2jGlH7EmwCvOoPnFgqp59zLdtZXquT3NLv1UN+D0JpeTbpREUA9jpW/oIXlxpiOQdVhPHVowQGZSyGFyJKU6UFpKLnAmr9ie6t/jeiBvIIa9aopii0ls8V8s0pQv8IGCJU5umJ6u4Ya3I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299386; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=jqV+FTdks629tRLYY2/KOwi0BH2MUvvBEyqzi/F68NU=; b=HbeH0N4VulV1PHEAJ75Oa7xFyB791rKgiF/BHCRG9QHVqP0rclxa0pfpc1FfBhjX5Qpc+CO12QKKVxSH7Tbvc9r540qO2lZdQb2rk5SoZbpAR4MXRLIXnc09PGNvr2cYUm9zXIAH3yZzNRpPSgJ+x1VcVlWhqlfNntbjOlsFqek= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718299385984664.0684317973647; Thu, 13 Jun 2024 10:23:05 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8u-0000i2-Rx; Thu, 13 Jun 2024 13:21:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8s-0000h3-F1 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:42 -0400 Received: from mail-pl1-x629.google.com ([2607:f8b0:4864:20::629]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8p-0005qw-M5 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:42 -0400 Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1f44b594deeso12640745ad.2 for ; Thu, 13 Jun 2024 10:21:39 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299298; x=1718904098; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jqV+FTdks629tRLYY2/KOwi0BH2MUvvBEyqzi/F68NU=; b=Lg4alNEumLU/Cvk9bGSce9I30DV+hc8CgtHmOH4UReTjsueh+5fLIDfV9f+GGn/zlv SHQi9i/R51VrnYqkWvCzTCIVwZxicfsuh1xpWk25murNv6gvLJbM9AgzVlif4SuvianC aGBL4zZPW/T1Fr2VZmqn7S7m5JeFizHrqlIAcMn5lB2fWz+Rv4LxWvjc2Ex3YVmSfrBw nINxC3c4Sk46PnFu0vs7/eZdeFkWIzTzOJLhWgj4oEm4k0bJKm9MrQVEhlgXIGjpWIoU g+uba2gcVw3te04kEO0gz8+7Jwa/rp4OIAwPn0/ZFRuf5a8g72RNWNiYt4IyWAFZUnO7 PV5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299298; x=1718904098; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jqV+FTdks629tRLYY2/KOwi0BH2MUvvBEyqzi/F68NU=; b=iypnqJs3n2gKki4St36nirPQv4uH0/hEEJ0o/Up204gQhCb3K32CdJnelwmkzFDP/1 hjBVNAoDweQO82mGmahOUnuAOrQOgTQO45c3IW/2P6t48i1Vpq8KpoIbONVPa/9OBkiq j9PjxDzQlOKDaPegzo3KNxK3qhoTbaUBs/qCbZalV9RW3v06s6I1OkWw+3Wmi9rUSVDV jchidP2vzSRiaJJOzYP/UUmrq5JJbcS/mPhBwszu/Du1/rCREX8aUjMvubZsjeautAOP fYkwdPrZ6DIQaXmTzcvBVBCv4RVujvq405oz6Mn86nBSW4+lhx6BKGV9o3z4exnTMk+2 doeg== X-Gm-Message-State: AOJu0YxWIFSUc2kPqq+mCWh0UHRSNOaz/QXB160LkiV42kblAIQfxckf dw5gF99GThO28yBD6worqKAdace1PtGsG3X+LM8fm6Ytxuvx0+LWXm6GsOVylSgpqeS6JzZhF3A S X-Google-Smtp-Source: AGHT+IHOJSAJueuBWfIfVgpTObAJpS+vtwEE8VcOhWPvgMZdnZX9T362Qcuxf+bg0UlZbyBw6Mh/zg== X-Received: by 2002:a17:902:ec8a:b0:1f6:fcd9:5b86 with SMTP id d9443c01a7336-1f8625c35a8mr3951595ad.12.1718299297257; Thu, 13 Jun 2024 10:21:37 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 5/9] target/arm: Make some MTE helpers widely available Date: Thu, 13 Jun 2024 17:20:59 +0000 Message-Id: <20240613172103.2987519-6-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::629; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x629.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299386591100005 Content-Type: text/plain; charset="utf-8" Make the MTE helpers allocation_tag_mem_probe, load_tag1, and store_tag1 available to other subsystems by moving them from mte_helper.c to a new header file, mte_helper.h. Signed-off-by: Gustavo Romero --- target/arm/tcg/mte_helper.c | 184 +------------------------------ target/arm/tcg/mte_helper.h | 211 ++++++++++++++++++++++++++++++++++++ 2 files changed, 212 insertions(+), 183 deletions(-) create mode 100644 target/arm/tcg/mte_helper.h diff --git a/target/arm/tcg/mte_helper.c b/target/arm/tcg/mte_helper.c index a50d576294..da639282e6 100644 --- a/target/arm/tcg/mte_helper.c +++ b/target/arm/tcg/mte_helper.c @@ -29,6 +29,7 @@ #include "hw/core/tcg-cpu-ops.h" #include "qapi/error.h" #include "qemu/guest-random.h" +#include "mte_helper.h" =20 =20 static int choose_nonexcluded_tag(int tag, int offset, uint16_t exclude) @@ -50,176 +51,6 @@ static int choose_nonexcluded_tag(int tag, int offset, = uint16_t exclude) return tag; } =20 -/** - * allocation_tag_mem_probe: - * @env: the cpu environment - * @ptr_mmu_idx: the addressing regime to use for the virtual address - * @ptr: the virtual address for which to look up tag memory - * @ptr_access: the access to use for the virtual address - * @ptr_size: the number of bytes in the normal memory access - * @tag_access: the access to use for the tag memory - * @probe: true to merely probe, never taking an exception - * @ra: the return address for exception handling - * - * Our tag memory is formatted as a sequence of little-endian nibbles. - * That is, the byte at (addr >> (LOG2_TAG_GRANULE + 1)) contains two - * tags, with the tag at [3:0] for the lower addr and the tag at [7:4] - * for the higher addr. - * - * Here, resolve the physical address from the virtual address, and return - * a pointer to the corresponding tag byte. - * - * If there is no tag storage corresponding to @ptr, return NULL. - * - * If the page is inaccessible for @ptr_access, or has a watchpoint, there= are - * three options: - * (1) probe =3D true, ra =3D 0 : pure probe -- we return NULL if the page= is not - * accessible, and do not take watchpoint traps. The calling code must - * handle those cases in the right priority compared to MTE traps. - * (2) probe =3D false, ra =3D 0 : probe, no fault expected -- the caller = guarantees - * that the page is going to be accessible. We will take watchpoint tr= aps. - * (3) probe =3D false, ra !=3D 0 : non-probe -- we will take both memory = access - * traps and watchpoint traps. - * (probe =3D true, ra !=3D 0 is invalid and will assert.) - */ -static uint8_t *allocation_tag_mem_probe(CPUARMState *env, int ptr_mmu_idx, - uint64_t ptr, MMUAccessType ptr_a= ccess, - int ptr_size, MMUAccessType tag_a= ccess, - bool probe, uintptr_t ra) -{ -#ifdef CONFIG_USER_ONLY - uint64_t clean_ptr =3D useronly_clean_ptr(ptr); - int flags =3D page_get_flags(clean_ptr); - uint8_t *tags; - uintptr_t index; - - assert(!(probe && ra)); - - if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { - if (probe) { - return NULL; - } - cpu_loop_exit_sigsegv(env_cpu(env), ptr, ptr_access, - !(flags & PAGE_VALID), ra); - } - - /* Require both MAP_ANON and PROT_MTE for the page. */ - if (!(flags & PAGE_ANON) || !(flags & PAGE_MTE)) { - return NULL; - } - - tags =3D page_get_target_data(clean_ptr); - - index =3D extract32(ptr, LOG2_TAG_GRANULE + 1, - TARGET_PAGE_BITS - LOG2_TAG_GRANULE - 1); - return tags + index; -#else - CPUTLBEntryFull *full; - MemTxAttrs attrs; - int in_page, flags; - hwaddr ptr_paddr, tag_paddr, xlat; - MemoryRegion *mr; - ARMASIdx tag_asi; - AddressSpace *tag_as; - void *host; - - /* - * Probe the first byte of the virtual address. This raises an - * exception for inaccessible pages, and resolves the virtual address - * into the softmmu tlb. - * - * When RA =3D=3D 0, this is either a pure probe or a no-fault-expecte= d probe. - * Indicate to probe_access_flags no-fault, then either return NULL - * for the pure probe, or assert that we received a valid page for the - * no-fault-expected probe. - */ - flags =3D probe_access_full(env, ptr, 0, ptr_access, ptr_mmu_idx, - ra =3D=3D 0, &host, &full, ra); - if (probe && (flags & TLB_INVALID_MASK)) { - return NULL; - } - assert(!(flags & TLB_INVALID_MASK)); - - /* If the virtual page MemAttr !=3D Tagged, access unchecked. */ - if (full->extra.arm.pte_attrs !=3D 0xf0) { - return NULL; - } - - /* - * If not backed by host ram, there is no tag storage: access unchecke= d. - * This is probably a guest os bug though, so log it. - */ - if (unlikely(flags & TLB_MMIO)) { - qemu_log_mask(LOG_GUEST_ERROR, - "Page @ 0x%" PRIx64 " indicates Tagged Normal memory= " - "but is not backed by host ram\n", ptr); - return NULL; - } - - /* - * Remember these values across the second lookup below, - * which may invalidate this pointer via tlb resize. - */ - ptr_paddr =3D full->phys_addr | (ptr & ~TARGET_PAGE_MASK); - attrs =3D full->attrs; - full =3D NULL; - - /* - * The Normal memory access can extend to the next page. E.g. a single - * 8-byte access to the last byte of a page will check only the last - * tag on the first page. - * Any page access exception has priority over tag check exception. - */ - in_page =3D -(ptr | TARGET_PAGE_MASK); - if (unlikely(ptr_size > in_page)) { - flags |=3D probe_access_full(env, ptr + in_page, 0, ptr_access, - ptr_mmu_idx, ra =3D=3D 0, &host, &full,= ra); - assert(!(flags & TLB_INVALID_MASK)); - } - - /* Any debug exception has priority over a tag check exception. */ - if (!probe && unlikely(flags & TLB_WATCHPOINT)) { - int wp =3D ptr_access =3D=3D MMU_DATA_LOAD ? BP_MEM_READ : BP_MEM_= WRITE; - assert(ra !=3D 0); - cpu_check_watchpoint(env_cpu(env), ptr, ptr_size, attrs, wp, ra); - } - - /* Convert to the physical address in tag space. */ - tag_paddr =3D ptr_paddr >> (LOG2_TAG_GRANULE + 1); - - /* Look up the address in tag space. */ - tag_asi =3D attrs.secure ? ARMASIdx_TagS : ARMASIdx_TagNS; - tag_as =3D cpu_get_address_space(env_cpu(env), tag_asi); - mr =3D address_space_translate(tag_as, tag_paddr, &xlat, NULL, - tag_access =3D=3D MMU_DATA_STORE, attrs); - - /* - * Note that @mr will never be NULL. If there is nothing in the addre= ss - * space at @tag_paddr, the translation will return the unallocated me= mory - * region. For our purposes, the result must be ram. - */ - if (unlikely(!memory_region_is_ram(mr))) { - /* ??? Failure is a board configuration error. */ - qemu_log_mask(LOG_UNIMP, - "Tag Memory @ 0x%" HWADDR_PRIx " not found for " - "Normal Memory @ 0x%" HWADDR_PRIx "\n", - tag_paddr, ptr_paddr); - return NULL; - } - - /* - * Ensure the tag memory is dirty on write, for migration. - * Tag memory can never contain code or display memory (vga). - */ - if (tag_access =3D=3D MMU_DATA_STORE) { - ram_addr_t tag_ra =3D memory_region_get_ram_addr(mr) + xlat; - cpu_physical_memory_set_dirty_flag(tag_ra, DIRTY_MEMORY_MIGRATION); - } - - return memory_region_get_ram_ptr(mr) + xlat; -#endif -} - static uint8_t *allocation_tag_mem(CPUARMState *env, int ptr_mmu_idx, uint64_t ptr, MMUAccessType ptr_access, int ptr_size, MMUAccessType tag_access, @@ -287,12 +118,6 @@ uint64_t HELPER(addsubg)(CPUARMState *env, uint64_t pt= r, return address_with_allocation_tag(ptr + offset, rtag); } =20 -static int load_tag1(uint64_t ptr, uint8_t *mem) -{ - int ofs =3D extract32(ptr, LOG2_TAG_GRANULE, 1) * 4; - return extract32(*mem, ofs, 4); -} - uint64_t HELPER(ldg)(CPUARMState *env, uint64_t ptr, uint64_t xt) { int mmu_idx =3D arm_env_mmu_index(env); @@ -320,13 +145,6 @@ static void check_tag_aligned(CPUARMState *env, uint64= _t ptr, uintptr_t ra) } } =20 -/* For use in a non-parallel context, store to the given nibble. */ -static void store_tag1(uint64_t ptr, uint8_t *mem, int tag) -{ - int ofs =3D extract32(ptr, LOG2_TAG_GRANULE, 1) * 4; - *mem =3D deposit32(*mem, ofs, 4, tag); -} - /* For use in a parallel context, atomically store to the given nibble. */ static void store_tag1_parallel(uint64_t ptr, uint8_t *mem, int tag) { diff --git a/target/arm/tcg/mte_helper.h b/target/arm/tcg/mte_helper.h new file mode 100644 index 0000000000..2d09345642 --- /dev/null +++ b/target/arm/tcg/mte_helper.h @@ -0,0 +1,211 @@ +/* + * ARM MemTag Operation Helpers + * + * Copyright (c) 2024 Linaro, Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef TARGET_ARM_MTE_H +#define TARGET_ARM_MTE_H + +#include "exec/exec-all.h" +#include "exec/ram_addr.h" +#include "hw/core/tcg-cpu-ops.h" +#include "qemu/log.h" + +/** + * allocation_tag_mem_probe: + * @env: the cpu environment + * @ptr_mmu_idx: the addressing regime to use for the virtual address + * @ptr: the virtual address for which to look up tag memory + * @ptr_access: the access to use for the virtual address + * @ptr_size: the number of bytes in the normal memory access + * @tag_access: the access to use for the tag memory + * @probe: true to merely probe, never taking an exception + * @ra: the return address for exception handling + * + * Our tag memory is formatted as a sequence of little-endian nibbles. + * That is, the byte at (addr >> (LOG2_TAG_GRANULE + 1)) contains two + * tags, with the tag at [3:0] for the lower addr and the tag at [7:4] + * for the higher addr. + * + * Here, resolve the physical address from the virtual address, and return + * a pointer to the corresponding tag byte. + * + * If there is no tag storage corresponding to @ptr, return NULL. + * + * If the page is inaccessible for @ptr_access, or has a watchpoint, there= are + * three options: + * (1) probe =3D true, ra =3D 0 : pure probe -- we return NULL if the page= is not + * accessible, and do not take watchpoint traps. The calling code must + * handle those cases in the right priority compared to MTE traps. + * (2) probe =3D false, ra =3D 0 : probe, no fault expected -- the caller = guarantees + * that the page is going to be accessible. We will take watchpoint tr= aps. + * (3) probe =3D false, ra !=3D 0 : non-probe -- we will take both memory = access + * traps and watchpoint traps. + * (probe =3D true, ra !=3D 0 is invalid and will assert.) + */ +static inline uint8_t *allocation_tag_mem_probe(CPUARMState *env, int ptr_= mmu_idx, + uint64_t ptr, MMUAccessType ptr_a= ccess, + int ptr_size, MMUAccessType tag_a= ccess, + bool probe, uintptr_t ra) +{ +#ifdef CONFIG_USER_ONLY + uint64_t clean_ptr =3D useronly_clean_ptr(ptr); + int flags =3D page_get_flags(clean_ptr); + uint8_t *tags; + uintptr_t index; + + assert(!(probe && ra)); + + if (!(flags & (ptr_access =3D=3D MMU_DATA_STORE ? PAGE_WRITE_ORG : PAG= E_READ))) { + if (probe) { + return NULL; + } + cpu_loop_exit_sigsegv(env_cpu(env), ptr, ptr_access, + !(flags & PAGE_VALID), ra); + } + + /* Require both MAP_ANON and PROT_MTE for the page. */ + if (!(flags & PAGE_ANON) || !(flags & PAGE_MTE)) { + return NULL; + } + + tags =3D page_get_target_data(clean_ptr); + + index =3D extract32(ptr, LOG2_TAG_GRANULE + 1, + TARGET_PAGE_BITS - LOG2_TAG_GRANULE - 1); + return tags + index; +#else + CPUTLBEntryFull *full; + MemTxAttrs attrs; + int in_page, flags; + hwaddr ptr_paddr, tag_paddr, xlat; + MemoryRegion *mr; + ARMASIdx tag_asi; + AddressSpace *tag_as; + void *host; + + /* + * Probe the first byte of the virtual address. This raises an + * exception for inaccessible pages, and resolves the virtual address + * into the softmmu tlb. + * + * When RA =3D=3D 0, this is either a pure probe or a no-fault-expecte= d probe. + * Indicate to probe_access_flags no-fault, then either return NULL + * for the pure probe, or assert that we received a valid page for the + * no-fault-expected probe. + */ + flags =3D probe_access_full(env, ptr, 0, ptr_access, ptr_mmu_idx, + ra =3D=3D 0, &host, &full, ra); + if (probe && (flags & TLB_INVALID_MASK)) { + return NULL; + } + assert(!(flags & TLB_INVALID_MASK)); + + /* If the virtual page MemAttr !=3D Tagged, access unchecked. */ + if (full->extra.arm.pte_attrs !=3D 0xf0) { + return NULL; + } + + /* + * If not backed by host ram, there is no tag storage: access unchecke= d. + * This is probably a guest os bug though, so log it. + */ + if (unlikely(flags & TLB_MMIO)) { + qemu_log_mask(LOG_GUEST_ERROR, + "Page @ 0x%" PRIx64 " indicates Tagged Normal memory= " + "but is not backed by host ram\n", ptr); + return NULL; + } + + /* + * Remember these values across the second lookup below, + * which may invalidate this pointer via tlb resize. + */ + ptr_paddr =3D full->phys_addr | (ptr & ~TARGET_PAGE_MASK); + attrs =3D full->attrs; + full =3D NULL; + + /* + * The Normal memory access can extend to the next page. E.g. a single + * 8-byte access to the last byte of a page will check only the last + * tag on the first page. + * Any page access exception has priority over tag check exception. + */ + in_page =3D -(ptr | TARGET_PAGE_MASK); + if (unlikely(ptr_size > in_page)) { + flags |=3D probe_access_full(env, ptr + in_page, 0, ptr_access, + ptr_mmu_idx, ra =3D=3D 0, &host, &full,= ra); + assert(!(flags & TLB_INVALID_MASK)); + } + + /* Any debug exception has priority over a tag check exception. */ + if (!probe && unlikely(flags & TLB_WATCHPOINT)) { + int wp =3D ptr_access =3D=3D MMU_DATA_LOAD ? BP_MEM_READ : BP_MEM_= WRITE; + assert(ra !=3D 0); + cpu_check_watchpoint(env_cpu(env), ptr, ptr_size, attrs, wp, ra); + } + + /* Convert to the physical address in tag space. */ + tag_paddr =3D ptr_paddr >> (LOG2_TAG_GRANULE + 1); + + /* Look up the address in tag space. */ + tag_asi =3D attrs.secure ? ARMASIdx_TagS : ARMASIdx_TagNS; + tag_as =3D cpu_get_address_space(env_cpu(env), tag_asi); + mr =3D address_space_translate(tag_as, tag_paddr, &xlat, NULL, + tag_access =3D=3D MMU_DATA_STORE, attrs); + + /* + * Note that @mr will never be NULL. If there is nothing in the addre= ss + * space at @tag_paddr, the translation will return the unallocated me= mory + * region. For our purposes, the result must be ram. + */ + if (unlikely(!memory_region_is_ram(mr))) { + /* ??? Failure is a board configuration error. */ + qemu_log_mask(LOG_UNIMP, + "Tag Memory @ 0x%" HWADDR_PRIx " not found for " + "Normal Memory @ 0x%" HWADDR_PRIx "\n", + tag_paddr, ptr_paddr); + return NULL; + } + + /* + * Ensure the tag memory is dirty on write, for migration. + * Tag memory can never contain code or display memory (vga). + */ + if (tag_access =3D=3D MMU_DATA_STORE) { + ram_addr_t tag_ra =3D memory_region_get_ram_addr(mr) + xlat; + cpu_physical_memory_set_dirty_flag(tag_ra, DIRTY_MEMORY_MIGRATION); + } + + return memory_region_get_ram_ptr(mr) + xlat; +#endif +} + +static inline int load_tag1(uint64_t ptr, uint8_t *mem) +{ + int ofs =3D extract32(ptr, LOG2_TAG_GRANULE, 1) * 4; + return extract32(*mem, ofs, 4); +} + +/* For use in a non-parallel context, store to the given nibble. */ +static inline void store_tag1(uint64_t ptr, uint8_t *mem, int tag) +{ + int ofs =3D extract32(ptr, LOG2_TAG_GRANULE, 1) * 4; + *mem =3D deposit32(*mem, ofs, 4, tag); +} + +#endif /* TARGET_ARM_MTE_H */ --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299398; cv=none; d=zohomail.com; s=zohoarc; b=dwMdJDWj0KOsZURlMH7aI18utaA/wJFQ7uJckcVftnGrTGRH3iXZOvyyW59t3TzAFmCnreyk+wA2E/ZVqpi5IC5SRr8ctwbF36eh66nALMCUM/v2npTvNDyjgpz7lRT30RSYYy+swexvsEsB+EkOPz7+rlPIG8oCcbYb5qcOAGc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299398; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=I8/Wixo704I9fR54FMLOa8feLRsS1yC83cftMeEAmA4=; b=BA3m08Y7SjfTF9XH+hBHO4Qmwm9JGgQXDbLCLqkR24JWJ/+CfiX28Ej3Iw7xUBcl7C5VKf8NCcTIBU03H5Fz0YAn0UOt9YJnPhCYTUZI61eYcWZ12/xbTCn1QngovTeOWrvuyLWi5cM77PYyHkt6TWJlxFwzv7XyMIlMHH66nG8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718299398734853.8992381753017; Thu, 13 Jun 2024 10:23:18 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8x-0000il-2v; Thu, 13 Jun 2024 13:21:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8t-0000hF-5w for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:44 -0400 Received: from mail-pf1-x434.google.com ([2607:f8b0:4864:20::434]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8r-0005r4-CX for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:42 -0400 Received: by mail-pf1-x434.google.com with SMTP id d2e1a72fcca58-70436ac8882so1014415b3a.2 for ; Thu, 13 Jun 2024 10:21:40 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299299; x=1718904099; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=I8/Wixo704I9fR54FMLOa8feLRsS1yC83cftMeEAmA4=; b=QK+caPCXRkJWlBoyioiglzI5J5SsC/RwbDX8loSj3BTUc4Z5yE/BsK7RNfD/2LKJfz QognfbRa+4Q1aHq3z81JeyCP15/51JIk4mI1l4yGmEggUeZJ4wu3Ea7PuDFfqKYzgwJM hJDUedd78jNoKLL9w5gEGMb2IzPeDXZEHY8iqSxKGMdmjxAeaGgDqkOYVCZ0O1cBBBdO BeFsorCx6ywsiloYNDzeEbohacJhyOX9Z4jO15nsUdv9VhGUjS4nMPk2ywMkAV9tycCT oKo2xy2EfaNaPBFxLzDrFxAM5yWVS0w/r9dgsVLFIYFZCoPN4qSspS9JF5ueMnyMlY8x V91g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299299; x=1718904099; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=I8/Wixo704I9fR54FMLOa8feLRsS1yC83cftMeEAmA4=; b=NZxvRsXPWx5/M1otsouAbRqZD5XR8wHINOChRVloCU3gH1Z3BtfUQ0fpykpaL5Gvt6 /4BP+bMgn2oqy1iyo0MtqVbcILg8mRlesekcRuEw/A5qG5GzHFdxsF/O0seziXgNWdwy 4zYkEe27y5qw6HdIqVHZdq76bu93ctj+0C5SAMRLNpdh07cZiK3gE8tr/WOjiP8B+GHq wmzmovkK+cNxdd7PE7l0rD7ARF3MSYuf4m/HQcoz1gwABwMHmZvPP3RBvNEiltPiBIae 1ZFBxbly/EUOGATvtT62MuCBdM/AqdYV8n6rUBgzdg0w4r0Xl/PhYIA3ah7QCsN8wf2U y+wg== X-Gm-Message-State: AOJu0YzCo2IbOLsNHR9h6HsmJySUYuO4cCrXYty+/iiwviGA4dJ3QjrZ Y/FXcT2GwDPUUjP8mmdhq9jYtt5YXaldrIhdOkRGXoy3BP7ri836uKojhCcULfacqJcRuUDMOhW d X-Google-Smtp-Source: AGHT+IFfA+/f5aw39B80kOLyRRQSNQ42qnAPqfXbGt3f5i4eCxWK7SbsMmmtdTRhLGUvNvO7NysykQ== X-Received: by 2002:a05:6a20:9499:b0:1b8:1be8:7ff5 with SMTP id adf61e73a8af0-1bae82900a0mr393960637.50.1718299299592; Thu, 13 Jun 2024 10:21:39 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 6/9] target/arm: Factor out code for setting MTE TCF0 field Date: Thu, 13 Jun 2024 17:21:00 +0000 Message-Id: <20240613172103.2987519-7-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::434; envelope-from=gustavo.romero@linaro.org; helo=mail-pf1-x434.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299400625100003 Content-Type: text/plain; charset="utf-8" Factor out the code used for setting the MTE TCF0 field from the prctl code into a convenient function. Other subsystems, like gdbstub, need to set this field as well, so keep it as a separate function to avoid duplication and ensure consistency in how this field is set across the board. Signed-off-by: Gustavo Romero --- linux-user/aarch64/target_prctl.h | 22 ++----------- target/arm/mte.h | 53 +++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+), 20 deletions(-) create mode 100644 target/arm/mte.h diff --git a/linux-user/aarch64/target_prctl.h b/linux-user/aarch64/target_= prctl.h index aa8e203c15..8a11404222 100644 --- a/linux-user/aarch64/target_prctl.h +++ b/linux-user/aarch64/target_prctl.h @@ -7,6 +7,7 @@ #define AARCH64_TARGET_PRCTL_H =20 #include "target/arm/cpu-features.h" +#include "target/arm/mte.h" =20 static abi_long do_prctl_sve_get_vl(CPUArchState *env) { @@ -173,26 +174,7 @@ static abi_long do_prctl_set_tagged_addr_ctrl(CPUArchS= tate *env, abi_long arg2) env->tagged_addr_enable =3D arg2 & PR_TAGGED_ADDR_ENABLE; =20 if (cpu_isar_feature(aa64_mte, cpu)) { - /* - * Write PR_MTE_TCF to SCTLR_EL1[TCF0]. - * - * The kernel has a per-cpu configuration for the sysadmin, - * /sys/devices/system/cpu/cpu/mte_tcf_preferred, - * which qemu does not implement. - * - * Because there is no performance difference between the modes, a= nd - * because SYNC is most useful for debugging MTE errors, choose SY= NC - * as the preferred mode. With this preference, and the way the A= PI - * uses only two bits, there is no way for the program to select - * ASYMM mode. - */ - unsigned tcf =3D 0; - if (arg2 & PR_MTE_TCF_SYNC) { - tcf =3D 1; - } else if (arg2 & PR_MTE_TCF_ASYNC) { - tcf =3D 2; - } - env->cp15.sctlr_el[1] =3D deposit64(env->cp15.sctlr_el[1], 38, 2, = tcf); + set_mte_tcf0(env, arg2); =20 /* * Write PR_MTE_TAG to GCR_EL1[Exclude]. diff --git a/target/arm/mte.h b/target/arm/mte.h new file mode 100644 index 0000000000..89712aad70 --- /dev/null +++ b/target/arm/mte.h @@ -0,0 +1,53 @@ +/* + * ARM MemTag convenience functions. + * + * Copyright (c) 2024 Linaro, Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef MTE_H +#define MTE_H + +#ifdef CONFIG_TCG +#ifdef CONFIG_USER_ONLY +#include "sys/prctl.h" + +static void set_mte_tcf0(CPUArchState *env, abi_long value) +{ + /* + * Write PR_MTE_TCF to SCTLR_EL1[TCF0]. + * + * The kernel has a per-cpu configuration for the sysadmin, + * /sys/devices/system/cpu/cpu/mte_tcf_preferred, + * which qemu does not implement. + * + * Because there is no performance difference between the modes, and + * because SYNC is most useful for debugging MTE errors, choose SYNC + * as the preferred mode. With this preference, and the way the API + * uses only two bits, there is no way for the program to select + * ASYMM mode. + */ + unsigned tcf =3D 0; + if (value & PR_MTE_TCF_SYNC) { + tcf =3D 1; + } else if (value & PR_MTE_TCF_ASYNC) { + tcf =3D 2; + } + env->cp15.sctlr_el[1] =3D deposit64(env->cp15.sctlr_el[1], 38, 2, tcf); +} +#endif /* CONFIG_USER_ONLY */ +#endif /* CONFIG_TCG */ + +#endif /* MTE_H */ --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299400; cv=none; d=zohomail.com; s=zohoarc; b=BgJbBJrq4/xy6pI4wZX0JIqR+XNTpFgz9LQLF4y/eVzgaoDwIARHR0XnqGYXBFxnnkTUiqNXzpRc85zMF//faQLzM/gaDtSOTX9ZW7lSPA3NIJ6ELwtXLsGXFK//R0Y5F/MUPfdsGHuccGOEnfKPlcA19xhMCAgHLSfmy19uOws= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299400; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=YGDcQ/GV1X1agXVxeAbW8TiRh8SRfIqjde3rxwV7xb0=; b=cevarGOU/mvvmeK/OPtK9SzziUbHmkPKQKJi5mRf2PXpIHBjMm5/H9xc6uORKm9jZh64H7Og4b51K4ee9wJGy+xPZ72OE5XGCWxXi1U+4qNzCqL/oZ1uMkYdRnc8htp5r9zT0tE2r2tY5WehL37D3YiTdEB6oosM+fTyX+xuD7w= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 171829940059938.39607988568105; Thu, 13 Jun 2024 10:23:20 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo8y-0000jl-K4; Thu, 13 Jun 2024 13:21:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8v-0000iJ-5o for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:46 -0400 Received: from mail-pl1-x634.google.com ([2607:f8b0:4864:20::634]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8t-0005rH-KW for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:44 -0400 Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1f6f38b1ab0so10632895ad.1 for ; Thu, 13 Jun 2024 10:21:43 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299302; x=1718904102; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=YGDcQ/GV1X1agXVxeAbW8TiRh8SRfIqjde3rxwV7xb0=; b=jfNTqMjVHbp+IiFyrWM1lERO4TtvWhZQmOAnBDpb0iZ9mA+jiiynO3+RPHe9UBmAQM uPgr2oq0xiIJgW1j8h6cbJko1VYzyEHGxmRNY1Gx0UoE5SI+5f6M5+2EGzN2Hn1XX91v 1snu4K2mOoRHjLQvTq8zXojNalv595brJ5GIUm71khtpHvmQZ/npqgzgFxvQ2viinCu1 j6NKvZVR1R54hhV5I/fagemB/tJ0i5NUHb0fj4vCLFUb1gB+2yGftE+86GURIW/vEuKV B2ciodogRc8WZC6jJHrcUgrl25ODONExoDa2+PsYhixSwXKHvTTLG4OlFja6WAW52WEo IjyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299302; x=1718904102; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=YGDcQ/GV1X1agXVxeAbW8TiRh8SRfIqjde3rxwV7xb0=; b=jJuAeT8qT3ywe1/gepjC3j2eJaunMUL4KjWdZbl+J82xmaKBtnFMlycvLaOmAnHuI4 f/WwqBB3Fgfw5+4Tl3YG6pMYEH+8twtWjiJPDIaw6fz3dYpiFfRNO2tE9ZVu3d1wBrhp /adajwM/AkLV0QYjwUNsmHB/2iq80VxaHMFqmix156VCNNH/ZsiTWMfIeIBxVGdM8kow Jl5zJ+cCBpk/5Rf5i+dDyoLRnRrz/E/Q/q2YNyg2bP3DfhIsI216o7hG3QwBGGhsVpXO /uYoE7T42p8Y3SSVng+fXt7t4HfKhyGFn3SDEje0PcZ/VQ08aqgpOM2aEpW9czsYH960 H74g== X-Gm-Message-State: AOJu0YwfL7sz1N+YsWzrE34HI6I/p24FwyidK6EikOsSmGG/QtRdtXph AC5zHV9I/Xewj4KKhkdbVkhg8s0eFLNIzCp5BdASwnOUIHbWuDRUd/47J3PgfmRVCYEiiKmWyPN U X-Google-Smtp-Source: AGHT+IERQ0n0TtUFsebsmvbP3FcT4ejJoLZ02CvY1kr9T053IU6s2XYfe5IsyS+8fZJymtIUR3bbbg== X-Received: by 2002:a17:903:1c8:b0:1f7:1730:b456 with SMTP id d9443c01a7336-1f862a0cca5mr4000635ad.57.1718299301878; Thu, 13 Jun 2024 10:21:41 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 7/9] gdbstub: Make get cpu and hex conversion functions non-internal Date: Thu, 13 Jun 2024 17:21:01 +0000 Message-Id: <20240613172103.2987519-8-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::634; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x634.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299402670100007 Content-Type: text/plain; charset="utf-8" Make the gdb_first_attached_cpu and gdb_hextomem non-internal so they are not confined to use only in gdbstub.c. Signed-off-by: Gustavo Romero Reviewed-by: Alex Benn=C3=A9e --- gdbstub/internals.h | 2 -- include/exec/gdbstub.h | 5 +++++ include/gdbstub/commands.h | 6 ++++++ 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/gdbstub/internals.h b/gdbstub/internals.h index 34121dc61a..81875abf5f 100644 --- a/gdbstub/internals.h +++ b/gdbstub/internals.h @@ -107,7 +107,6 @@ static inline int tohex(int v) =20 void gdb_put_strbuf(void); int gdb_put_packet_binary(const char *buf, int len, bool dump); -void gdb_hextomem(GByteArray *mem, const char *buf, int len); void gdb_memtohex(GString *buf, const uint8_t *mem, int len); void gdb_memtox(GString *buf, const char *mem, int len); void gdb_read_byte(uint8_t ch); @@ -130,7 +129,6 @@ bool gdb_got_immediate_ack(void); /* utility helpers */ GDBProcess *gdb_get_process(uint32_t pid); CPUState *gdb_get_first_cpu_in_process(GDBProcess *process); -CPUState *gdb_first_attached_cpu(void); void gdb_append_thread_id(CPUState *cpu, GString *buf); int gdb_get_cpu_index(CPUState *cpu); unsigned int gdb_get_max_cpus(void); /* both */ diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index 1bd2c4ec2a..77e5ec9a5b 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -135,4 +135,9 @@ void gdb_set_stop_cpu(CPUState *cpu); /* in gdbstub-xml.c, generated by scripts/feature_to_c.py */ extern const GDBFeature gdb_static_features[]; =20 +/** + * Return the first attached CPU + */ +CPUState *gdb_first_attached_cpu(void); + #endif /* GDBSTUB_H */ diff --git a/include/gdbstub/commands.h b/include/gdbstub/commands.h index 2204c3ddbe..914b6d7313 100644 --- a/include/gdbstub/commands.h +++ b/include/gdbstub/commands.h @@ -93,4 +93,10 @@ void gdb_extend_set_table(GdbCmdParseEntry *table, int s= ize); */ void gdb_extend_qsupported_features(char *qsupported_features); =20 +/** + * Convert a hex string to bytes. Conversion is done per byte, so 2 hex di= gits + * are converted to 1 byte. Invalid hex digits are treated as 0 digits. + */ +void gdb_hextomem(GByteArray *mem, const char *buf, int len); + #endif /* GDBSTUB_COMMANDS_H */ --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1718299365; cv=none; d=zohomail.com; s=zohoarc; b=FzT0xAELsA/0BxW2GqaOZsIPxymIAGbhB9ZqgTcKczsWKucnEL4AIbcCoBy2+898Y3Oplh3phLqACnOLVygwpFrobwlFHthN82cSvU4TqRXNERaI8zekPFZMm678lS2XttkXoYpWijmA+aiNBm309xD6Y1D3EBd/cn+OP0qAzSY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718299365; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=ENrgSKnlYn3BML4NSOSi8rxwextiU4S/DCcJAExAOws=; b=czVSiLG0PEGlaL92oKcOVrwjGfE1RxtWbIO4Z8Ao/evW5aJ1fmWyl/PPnxHiNITjkz12gd8587CdLXuQx/lifn1t22BL2IShSMafXVRspw0ecOh/DNvZjwpt3nTGO+63PVyFH9mK0gRKDKyWN+Gm5NgWGFhpMbqZRHH0+ihrD3U= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17182993652791019.4903775487707; Thu, 13 Jun 2024 10:22:45 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sHo91-0000kQ-AC; Thu, 13 Jun 2024 13:21:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sHo8x-0000jH-S4 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:48 -0400 Received: from mail-pl1-x634.google.com ([2607:f8b0:4864:20::634]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sHo8v-0005rR-O3 for qemu-devel@nongnu.org; Thu, 13 Jun 2024 13:21:47 -0400 Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1f70131063cso12236765ad.2 for ; Thu, 13 Jun 2024 10:21:45 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299304; x=1718904104; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ENrgSKnlYn3BML4NSOSi8rxwextiU4S/DCcJAExAOws=; b=eFzVZiv/MJGuWAXlTAG/HtIF2XklCwyv1zPnKWVHBRNa0jzFXwX5WFqol5aE/tzpj7 1YuK6+kLYesgp6ctMYqzB78WaWpwR3kahZFCqdXGL7EnRqPquOSOw+VXDbu0udPa9PgY iCmaBpdVlLtQPZgmLNy749zGSMrQCymgcbqlr4p+5/+olsuaxyV7U5fCZm6Sj4Zqizh2 9gM7PmrpGqePeVvcCJqq2KbyDn05atQpWJvgtYZI+DQXkrKeUhmRjU0YWsnEPuvXrHe9 zsM8VhHDJWM5Ob+9XyV4TJ4UkbrolLT90/rkgKfpU8d0fFa8y9mSRYW40ssTzL2ZZOl9 2klA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299304; x=1718904104; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ENrgSKnlYn3BML4NSOSi8rxwextiU4S/DCcJAExAOws=; b=UxywP9R8hEp3Zw9ALUQ7ONS+ZUDf3wbRMVClBZoimFqBFXic9HUjBHFqFuRxmVN11B RWqMzVac62xjujuBKxW+atBaquJTCjrJUM15O71pIXhM+glCxI5EEEkPs6BdEQ0oxBzn d53kdQZSbrpmKVa2YXJoDFEj+9GTsjCYqmF2qzPNHMSSfre11nMAIDiwybFLTwYKkRPX 8v+itoDJbRS/fCHMZFGzPtvSk1n2DKoboKUOqgRAMQf8fk5A9wN7o3wFjriOPLMLx0xW V6TG5lQxjMzGXOoB0hsk2z7ZQpCRUZz9JZwTWlI7AZh0mq83+bPsHtAWe8c2FDc+FYfm p03g== X-Gm-Message-State: AOJu0Yx3H8kkyjWpfzyXkIPVbT18sKSJPQ+OvIru9/fqDJ9q9J+V03vL iPSgeMHEew6RifsQToSHq1P8WLOyfeQmI48z9/Wknpg60YHAM7V3nmY0VwDcoo721GHberahXzr 2 X-Google-Smtp-Source: AGHT+IGU9JgjacEQKVoWNZsfCSNISkA+BcBUxKiZgJQ2rYq0Btst/eLmGC8Swqmvsi6m8qW8Kp2QIQ== X-Received: by 2002:a17:902:dace:b0:1f7:908:963a with SMTP id d9443c01a7336-1f8626d2879mr4000635ad.24.1718299304171; Thu, 13 Jun 2024 10:21:44 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 8/9] gdbstub: Add support for MTE in user mode Date: Thu, 13 Jun 2024 17:21:02 +0000 Message-Id: <20240613172103.2987519-9-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::634; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x634.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299366484100003 Content-Type: text/plain; charset="utf-8" This commit implements the stubs to handle the qIsAddressTagged, qMemTag, and QMemTag GDB packets, allowing all GDB 'memory-tag' subcommands to work with QEMU gdbstub on aarch64 user mode. It also implements the get/set functions for the special GDB MTE register 'tag_ctl', used to control the MTE fault type at runtime. Signed-off-by: Gustavo Romero --- configs/targets/aarch64-linux-user.mak | 2 +- gdb-xml/aarch64-mte.xml | 11 ++ target/arm/cpu.c | 1 + target/arm/gdbstub.c | 253 +++++++++++++++++++++++++ target/arm/internals.h | 2 + 5 files changed, 268 insertions(+), 1 deletion(-) create mode 100644 gdb-xml/aarch64-mte.xml diff --git a/configs/targets/aarch64-linux-user.mak b/configs/targets/aarch= 64-linux-user.mak index ba8bc5fe3f..8f0ed21d76 100644 --- a/configs/targets/aarch64-linux-user.mak +++ b/configs/targets/aarch64-linux-user.mak @@ -1,6 +1,6 @@ TARGET_ARCH=3Daarch64 TARGET_BASE_ARCH=3Darm -TARGET_XML_FILES=3D gdb-xml/aarch64-core.xml gdb-xml/aarch64-fpu.xml gdb-x= ml/aarch64-pauth.xml +TARGET_XML_FILES=3D gdb-xml/aarch64-core.xml gdb-xml/aarch64-fpu.xml gdb-x= ml/aarch64-pauth.xml gdb-xml/aarch64-mte.xml TARGET_HAS_BFLT=3Dy CONFIG_SEMIHOSTING=3Dy CONFIG_ARM_COMPATIBLE_SEMIHOSTING=3Dy diff --git a/gdb-xml/aarch64-mte.xml b/gdb-xml/aarch64-mte.xml new file mode 100644 index 0000000000..4b70b4f17a --- /dev/null +++ b/gdb-xml/aarch64-mte.xml @@ -0,0 +1,11 @@ + + + + + + + diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 35fa281f1b..14d4eca127 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2518,6 +2518,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error= **errp) =20 register_cp_regs_for_features(cpu); arm_cpu_register_gdb_regs_for_features(cpu); + arm_cpu_register_gdb_commands(cpu); =20 init_cpreg_list(cpu); =20 diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c index a3bb73cfa7..1cbcd6fa98 100644 --- a/target/arm/gdbstub.c +++ b/target/arm/gdbstub.c @@ -21,10 +21,13 @@ #include "cpu.h" #include "exec/gdbstub.h" #include "gdbstub/helpers.h" +#include "gdbstub/commands.h" #include "sysemu/tcg.h" #include "internals.h" #include "cpu-features.h" #include "cpregs.h" +#include "mte.h" +#include "tcg/mte_helper.h" =20 typedef struct RegisterSysregFeatureParam { CPUState *cs; @@ -474,6 +477,246 @@ static GDBFeature *arm_gen_dynamic_m_secextreg_featur= e(CPUState *cs, #endif #endif /* CONFIG_TCG */ =20 +#ifdef TARGET_AARCH64 +#ifdef CONFIG_USER_ONLY +static int aarch64_gdb_get_tag_ctl_reg(CPUState *cs, struct _GByteArray *b= uf, int reg) +{ + ARMCPU *cpu =3D ARM_CPU(cs); + CPUARMState *env =3D &cpu->env; + uint64_t tcf0; + + assert(reg =3D=3D 0); + + tcf0 =3D extract64(env->cp15.sctlr_el[1], 38, 2); + + return gdb_get_reg64(buf, tcf0); +} + +static int aarch64_gdb_set_tag_ctl_reg(CPUState *cs, uint8_t *buf, int reg) +{ + ARMCPU *cpu =3D ARM_CPU(cs); + CPUARMState *env =3D &cpu->env; + + uint8_t tcf; + + assert(reg =3D=3D 0); + + tcf =3D *buf << PR_MTE_TCF_SHIFT; + + if (!tcf) { + return 0; + } + + /* + * 'tag_ctl' register is actually a "pseudo-register" provided by GDB = to + * expose options regarding the type of MTE fault that can be controll= ed at + * runtime. + */ + set_mte_tcf0(env, tcf); + + return 1; +} + +static void handle_q_memtag(GArray *params, G_GNUC_UNUSED void *user_ctx) +{ + ARMCPU *cpu =3D ARM_CPU(gdb_first_attached_cpu()); + CPUARMState *env =3D &cpu->env; + + uint64_t addr =3D gdb_get_cmd_param(params, 0)->val_ull; + uint64_t len =3D gdb_get_cmd_param(params, 1)->val_ul; + int type =3D gdb_get_cmd_param(params, 2)->val_ul; + + uint8_t *tags; + uint8_t addr_tag; + + g_autoptr(GString) str_buf =3D g_string_new(NULL); + + /* + * GDB does not query multiple tags for a memory range on remote targe= ts, so + * that's not supported either by gdbstub. + */ + if (len !=3D 1) { + gdb_put_packet("E02"); + } + + /* GDB never queries a tag different from an allocation tag (type 1). = */ + if (type !=3D 1) { + gdb_put_packet("E03"); + } + + /* Note that tags are packed here (2 tags packed in one byte). */ + tags =3D allocation_tag_mem_probe(env, 0, addr, MMU_DATA_LOAD, 8 /* 64= -bit */, + MMU_DATA_LOAD, true, 0); + if (!tags) { + /* Address is not in a tagged region. */ + gdb_put_packet("E04"); + return; + } + + /* Unpack tag from byte. */ + addr_tag =3D load_tag1(addr, tags); + g_string_printf(str_buf, "m%.2x", addr_tag); + + gdb_put_packet(str_buf->str); +} + +static void handle_q_isaddresstagged(GArray *params, G_GNUC_UNUSED void *u= ser_ctx) +{ + ARMCPU *cpu =3D ARM_CPU(gdb_first_attached_cpu()); + CPUARMState *env =3D &cpu->env; + + uint64_t addr =3D gdb_get_cmd_param(params, 0)->val_ull; + + uint8_t *tags; + const char *reply; + + tags =3D allocation_tag_mem_probe(env, 0, addr, MMU_DATA_LOAD, 8 /* 64= -bit */, + MMU_DATA_LOAD, true, 0); + reply =3D tags ? "01" : "00"; + + gdb_put_packet(reply); +} + +static void handle_Q_memtag(GArray *params, G_GNUC_UNUSED void *user_ctx) +{ + ARMCPU *cpu =3D ARM_CPU(gdb_first_attached_cpu()); + CPUARMState *env =3D &cpu->env; + + uint64_t start_addr =3D gdb_get_cmd_param(params, 0)->val_ull; + uint64_t len =3D gdb_get_cmd_param(params, 1)->val_ul; + int type =3D gdb_get_cmd_param(params, 2)->val_ul; + char const *new_tags_str =3D gdb_get_cmd_param(params, 3)->data; + + uint64_t end_addr; + + int num_new_tags; + uint8_t *tags; + + g_autoptr(GByteArray) new_tags =3D g_byte_array_new(); + + /* + * Only the allocation tag (i.e. type 1) can be set at the stub side. + */ + if (type !=3D 1) { + gdb_put_packet("E02"); + return; + } + + end_addr =3D start_addr + (len - 1); /* 'len' is always >=3D 1 */ + /* Check if request's memory range does not cross page boundaries. */ + if ((start_addr ^ end_addr) & TARGET_PAGE_MASK) { + gdb_put_packet("E03"); + return; + } + + /* + * Get all tags in the page starting from the tag of the start address. + * Note that there are two tags packed into a single byte here. + */ + tags =3D allocation_tag_mem_probe(env, 0, start_addr, MMU_DATA_STORE, + 8 /* 64-bit */, MMU_DATA_STORE, true, = 0); + if (!tags) { + /* Address is not in a tagged region. */ + gdb_put_packet("E04"); + return; + } + + /* Convert tags provided by GDB, 2 hex digits per tag. */ + num_new_tags =3D strlen(new_tags_str) / 2; + gdb_hextomem(new_tags, new_tags_str, num_new_tags); + + uint64_t address =3D start_addr; + int new_tag_index =3D 0; + while (address <=3D end_addr) { + uint8_t new_tag; + int packed_index; + + /* + * Find packed tag index from unpacked tag index. There are two ta= gs + * in one packed index (one tag per nibble). + */ + packed_index =3D new_tag_index / 2; + + new_tag =3D new_tags->data[new_tag_index % num_new_tags]; + store_tag1(address, tags + packed_index, new_tag); + + address +=3D TAG_GRANULE; + new_tag_index++; + } + + gdb_put_packet("OK"); +} + +enum Command { + qMemTags, + qIsAddressTagged, + QMemTags, + NUM_CMDS +}; + +static GdbCmdParseEntry cmd_handler_table[NUM_CMDS] =3D { + [qMemTags] =3D { + .handler =3D handle_q_memtag, + .cmd_startswith =3D 1, + .cmd =3D "MemTags:", + .schema =3D "L,l:l0" + }, + [qIsAddressTagged] =3D { + .handler =3D handle_q_isaddresstagged, + .cmd_startswith =3D 1, + .cmd =3D "IsAddressTagged:", + .schema =3D "L0" + }, + [QMemTags] =3D { + .handler =3D handle_Q_memtag, + .cmd_startswith =3D 1, + .cmd =3D "MemTags:", + .schema =3D "L,l:l:s0" + }, +}; +#endif /* CONFIG_USER_ONLY */ +#endif /* TARGET_AARCH64 */ + +void arm_cpu_register_gdb_commands(ARMCPU *cpu) +{ + GArray *query_table =3D + g_array_new(FALSE, FALSE, sizeof(GdbCmdParseEntry)); + GArray *set_table =3D + g_array_new(FALSE, FALSE, sizeof(GdbCmdParseEntry)); + GString *qsupported_features =3D g_string_new(NULL); + +#ifdef CONFIG_USER_ONLY + /* MTE */ + if (cpu_isar_feature(aa64_mte3, cpu)) { + g_string_append(qsupported_features, ";memory-tagging+"); + + g_array_append_val(query_table, cmd_handler_table[qMemTags]); + g_array_append_val(query_table, cmd_handler_table[qIsAddressTagged= ]); + + g_array_append_val(set_table, cmd_handler_table[QMemTags]); + } +#endif + + /* Set arch-specific handlers for 'q' commands. */ + if (query_table->len) { + gdb_extend_query_table(&g_array_index(query_table, + GdbCmdParseEntry, 0), + query_table->len); + } + + /* Set arch-specific handlers for 'Q' commands. */ + if (set_table->len) { + gdb_extend_set_table(&g_array_index(set_table, + GdbCmdParseEntry, 0), + set_table->len); + } + + /* Set arch-specific qSupported feature. */ + if (qsupported_features->len) { + gdb_extend_qsupported_features(qsupported_features->str); + } +} + void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu) { CPUState *cs =3D CPU(cpu); @@ -507,6 +750,16 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cp= u) gdb_find_static_feature("aarch64-paut= h.xml"), 0); } + +#ifdef CONFIG_USER_ONLY + /* Memory Tagging Extension (MTE) 'tag_ctl' pseudo-register. */ + if (cpu_isar_feature(aa64_mte, cpu)) { + gdb_register_coprocessor(cs, aarch64_gdb_get_tag_ctl_reg, + aarch64_gdb_set_tag_ctl_reg, + gdb_find_static_feature("aarch64-mte.= xml"), + 0); + } +#endif #endif } else { if (arm_feature(env, ARM_FEATURE_NEON)) { diff --git a/target/arm/internals.h b/target/arm/internals.h index 11b5da2562..e27a9fa1e0 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -358,6 +358,8 @@ void init_cpreg_list(ARMCPU *cpu); void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu); void arm_translate_init(void); =20 +void arm_cpu_register_gdb_commands(ARMCPU *cpu); + void arm_restore_state_to_opc(CPUState *cs, const TranslationBlock *tb, const uint64_t *data); --=20 2.34.1 From nobody Mon Nov 25 00:43:01 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855e5b85bsm16443885ad.32.2024.06.13.10.21.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 10:21:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718299306; x=1718904106; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=PquiuMp1JH1T0sH0/rv5hP1UkVOfgmDk9Oiumx90w18=; b=bkH+qrw7Lk/StkKFrgJvx7QYmA/d6qH0anJ/h6klr6a1+sirm3aJl/z8kDK4c4aXth 4rxSzdc06aDzviFyV3a8TPMx6opgXU7yxFwMfwZJ3kMOmkoWDuTNlnxEPJ/YHUGbJVrf nR3TyQes9hvxChp8luyK1PjBZ1rdFWbAEHx8VRU62AUgmn6QlfeTGu8yOMCgjzasJSkX 7qFik2y7TUeifDU7+WD49xoIwO+KxfEpmrawOYwp5sH03HT0a14BJLmbQ0KcwL/CxkDd ZMP+LE7p3eT6K/+QdkcCZ8iSqg27RxMOABQ2lLc9OB5m1uhzq30ISor2xbUGbeOEd5EG qS2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718299306; x=1718904106; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PquiuMp1JH1T0sH0/rv5hP1UkVOfgmDk9Oiumx90w18=; b=BcVIa9OR2daJbXUbYhS921K/LsPWc8goHQn4LXx1/VQkan9kOdf0pTEcN1luHcQG7F e3kvpKFReRrMHBfiGFr+aE4LJ9M477BeTNGpdRe4GdBOoqvwGVE/c9dSxoF96YX7heN7 zDQDUupDLR+0hNe1GH6pCFO0aeZd8EEd52Z4g9+H5uXxBgS2ccnYMdm1fW6LPA2+I2qL wO5r3+yQrVNmhcDm0xCDwMCKBOEN03PVVOGL3o7Z1T4aYGsQJISMWX2iEXatp2rB+vs7 2eHNyJZMNuX6Kj4q2X4JDMJKnawV1r7XDsVtRCgrjjJGZohvuRTP/hHPwpj2y+z6Ox+c V3sA== X-Gm-Message-State: AOJu0YzXTEsLM3zxeJwrlnoOwmHZtJ5Bwrh94fsNlrhjbQ1q4Jseq89V KYuPTBka8F41wVYQn5YP9OaNR0/g7l9NpTWItEdsIwdzvA4doFCl6P0h44m8p4iWPrxQhlE9CDR W X-Google-Smtp-Source: AGHT+IHwnWXARqUHIY2AZcW4+VPaOi0tuovceA1R1hFlgoDlEuCmUyEKDSa//ApjJplGtovmgsRtsw== X-Received: by 2002:a17:902:f545:b0:1f7:1ba5:85ff with SMTP id d9443c01a7336-1f8629fee71mr2807435ad.57.1718299306474; Thu, 13 Jun 2024 10:21:46 -0700 (PDT) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: gustavo.romero@linaro.org Subject: [PATCH v2 9/9] tests/tcg/aarch64: Add MTE gdbstub tests Date: Thu, 13 Jun 2024 17:21:03 +0000 Message-Id: <20240613172103.2987519-10-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240613172103.2987519-1-gustavo.romero@linaro.org> References: <20240613172103.2987519-1-gustavo.romero@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::631; envelope-from=gustavo.romero@linaro.org; helo=mail-pl1-x631.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1718299368466100007 Content-Type: text/plain; charset="utf-8" Add tests to exercise the MTE stubs. Signed-off-by: Gustavo Romero --- tests/tcg/aarch64/Makefile.target | 11 ++- tests/tcg/aarch64/gdbstub/test-mte.py | 86 ++++++++++++++++++++++ tests/tcg/aarch64/mte-8.c | 102 ++++++++++++++++++++++++++ 3 files changed, 197 insertions(+), 2 deletions(-) create mode 100644 tests/tcg/aarch64/gdbstub/test-mte.py create mode 100644 tests/tcg/aarch64/mte-8.c diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile= .target index 70d728ae9a..d2e3f251eb 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -62,7 +62,7 @@ AARCH64_TESTS +=3D bti-2 =20 # MTE Tests ifneq ($(CROSS_CC_HAS_ARMV8_MTE),) -AARCH64_TESTS +=3D mte-1 mte-2 mte-3 mte-4 mte-5 mte-6 mte-7 +AARCH64_TESTS +=3D mte-1 mte-2 mte-3 mte-4 mte-5 mte-6 mte-7 mte-8 mte-%: CFLAGS +=3D -march=3Darmv8.5-a+memtag endif =20 @@ -127,7 +127,14 @@ run-gdbstub-sve-ioctls: sve-ioctls --bin $< --test $(AARCH64_SRC)/gdbstub/test-sve-ioctl.py, \ basic gdbstub SVE ZLEN support) =20 -EXTRA_RUNS +=3D run-gdbstub-sysregs run-gdbstub-sve-ioctls +run-gdbstub-mte: mte-8 + $(call run-test, $@, $(GDB_SCRIPT) \ + --gdb $(GDB) \ + --qemu $(QEMU) --qargs "$(QEMU_OPTS)" \ + --bin "$< -s" --test $(AARCH64_SRC)/gdbstub/test-mte.py, \ + gdbstub MTE support) + +EXTRA_RUNS +=3D run-gdbstub-sysregs run-gdbstub-sve-ioctls run-gdbstub-mte endif endif =20 diff --git a/tests/tcg/aarch64/gdbstub/test-mte.py b/tests/tcg/aarch64/gdbs= tub/test-mte.py new file mode 100644 index 0000000000..ec49eb8d2b --- /dev/null +++ b/tests/tcg/aarch64/gdbstub/test-mte.py @@ -0,0 +1,86 @@ +from __future__ import print_function +# +# Test GDB memory-tag commands that exercise the stubs for the qIsAddressT= agged, +# qMemTag, and QMemTag packets. Logical tag-only commands rely on local +# operations, hence don't exercise any stub. +# +# The test consists in breaking just after a atag() call (which sets the +# allocation tag -- see mte-8.c for details) and setting/getting tags in +# different memory locations and ranges starting at the address of the arr= ay +# 'a'. +# +# This is launched via tests/guest-debug/run-test.py +# + + +import gdb +import re +from test_gdbstub import main, report + + +PATTERN_0 =3D "Memory tags for address 0x[0-9a-f]+ match \(0x[0-9a-f]+\)." +PATTERN_1 =3D ".*(0x[0-9a-f]+)" + + +def run_test(): + gdb.execute("break 99", False, True) + gdb.execute("continue", False, True) + try: + # Test if we can check correctly that the allocation tag for + # array 'a' matches the logical tag after atag() is called. + co =3D gdb.execute("memory-tag check a", False, True) + tags_match =3D re.findall(PATTERN_0, co, re.MULTILINE) + if tags_match: + report(True, f"{tags_match[0]}") + else: + report(False, "Logical and allocation tags don't match!") + + # Test allocation tag 'set and print' commands. Commands on logical + # tags rely on local operation and so don't exercise any stub. + + # Set the allocation tag for the first granule (16 bytes) of + # address starting at 'a' address to a known value, i.e. 0x04. + gdb.execute("memory-tag set-allocation-tag a 1 04", False, True) + + # Then set the allocation tag for the second granule to a known + # value, i.e. 0x06. This tests that contiguous tag granules are + # set correct and don't run over each other. + gdb.execute("memory-tag set-allocation-tag a+16 1 06", False, True) + + # Read the known values back and check if they remain the same. + + co =3D gdb.execute("memory-tag print-allocation-tag a", False, Tru= e) + first_tag =3D re.match(PATTERN_1, co)[1] + + co =3D gdb.execute("memory-tag print-allocation-tag a+16", False, = True) + second_tag =3D re.match(PATTERN_1, co)[1] + + if first_tag =3D=3D "0x4" and second_tag =3D=3D "0x6": + report(True, "Allocation tags are correctly set/printed.") + else: + report(False, "Can't set/print allocation tags!") + + # Now test fill pattern by setting a whole page with a pattern. + gdb.execute("memory-tag set-allocation-tag a 4096 0a0b", False, Tr= ue) + + # And read back the tags of the last two granules in page so + # we also test if the pattern is set correctly up to the end of + # the page. + co =3D gdb.execute("memory-tag print-allocation-tag a+4096-32", Fa= lse, True) + tag =3D re.match(PATTERN_1, co)[1] + + co =3D gdb.execute("memory-tag print-allocation-tag a+4096-16", Fa= lse, True) + last_tag =3D re.match(PATTERN_1, co)[1] + + if tag =3D=3D "0xa" and last_tag =3D=3D "0xb": + report(True, "Fill pattern is ok.") + else: + report(False, "Fill pattern failed!") + + except gdb.error: + # This usually happens because a GDB version that does not + # support memory tagging was used to run the test. + report(False, "'memory-tag' command failed!") + + +main(run_test, expected_arch=3D"aarch64") diff --git a/tests/tcg/aarch64/mte-8.c b/tests/tcg/aarch64/mte-8.c new file mode 100644 index 0000000000..367768e6b6 --- /dev/null +++ b/tests/tcg/aarch64/mte-8.c @@ -0,0 +1,102 @@ +/* + * To be compiled with -march=3Darmv8.5-a+memtag + * + * This test is adapted from a Linux test. Please see: + * + * https://www.kernel.org/doc/html/next/arch/arm64/memory-tagging-extensio= n.html#example-of-correct-usage + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +/* + * From arch/arm64/include/uapi/asm/hwcap.h + */ +#define HWCAP2_MTE (1 << 18) + +/* + * From arch/arm64/include/uapi/asm/mman.h + */ +#define PROT_MTE 0x20 + +/* + * Insert a random logical tag into the given pointer. + */ +#define insert_random_tag(ptr) ({ \ + uint64_t __val; \ + asm("irg %0, %1" : "=3Dr" (__val) : "r" (ptr)); \ + __val; \ +}) + +/* + * Set the allocation tag on the destination address. + */ +#define set_tag(tagged_addr) do { \ + asm volatile("stg %0, [%0]" : : "r" (tagged_addr) : "memory"); \ +} while (0) + + +int main(int argc, char *argv[]) +{ + unsigned char *a; + unsigned long page_sz =3D sysconf(_SC_PAGESIZE); + unsigned long hwcap2 =3D getauxval(AT_HWCAP2); + + if (!(argc =3D=3D 2 && strcmp(argv[1], "-s") =3D=3D 0)) { + return 0; + } + + /* check if MTE is present */ + if (!(hwcap2 & HWCAP2_MTE)) + return EXIT_FAILURE; + + /* + * Enable the tagged address ABI, synchronous or asynchronous MTE + * tag check faults (based on per-CPU preference) and allow all + * non-zero tags in the randomly generated set. + */ + if (prctl(PR_SET_TAGGED_ADDR_CTRL, + PR_TAGGED_ADDR_ENABLE | PR_MTE_TCF_SYNC | PR_MTE_TCF_ASYNC | + (0xfffe << PR_MTE_TAG_SHIFT), + 0, 0, 0)) { + perror("prctl() failed"); + return EXIT_FAILURE; + } + + a =3D mmap(0, page_sz, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (a =3D=3D MAP_FAILED) { + perror("mmap() failed"); + return EXIT_FAILURE; + } + + printf("a[] address is %p\n", a); + + /* + * Enable MTE on the above anonymous mmap. The flag could be passed + * directly to mmap() and skip this step. + */ + if (mprotect(a, page_sz, PROT_READ | PROT_WRITE | PROT_MTE)) { + perror("mprotect() failed"); + return EXIT_FAILURE; + } + + /* access with the default tag (0) */ + a[0] =3D 1; + a[1] =3D 2; + + printf("a[0] =3D %hhu a[1] =3D %hhu\n", a[0], a[1]); + + /* set the logical and allocation tags */ + a =3D (unsigned char *)insert_random_tag(a); + set_tag(a); + + printf("%p\n", a); + + return 0; +} --=20 2.34.1