From nobody Mon Nov 25 03:40:00 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=1718605811; cv=none; d=zohomail.com; s=zohoarc; b=aR3NXmIRsd9QAWDV2D0oLjf5s2Yu7qyCOjuuI3SttlRHiSPdRytZn6Q8/ZztEVrTOhHIyL3r9Q3wYVz5EFsFCFN8SQDCXeaIsJtc9RfFmjEBSE+xVIhqgf5CHtD6k8VR29nGgbsJFIK0dYprWWcNTQ/nxpryWUDcMLzf2DV/EUE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718605811; 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=UPserauD6apwAirz4+xKXuUXITCu8qOi9MTzCrUGYWjVegozAA1HPb1kQtUrC8JYBrUQeZntBpjNhmuydgpOoXIIBbh3cjvlkU/pdE3l/u0HGscaKGx4+9lk06QHkFzvoZJgIWb3GLFtcp0KbARpmI5si9zWWMlMSnF5pltKLM0= 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 1718605811801363.9386710923702; Sun, 16 Jun 2024 23:30:11 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sJ5rn-0003mH-OM; Mon, 17 Jun 2024 02:29:23 -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 1sJ5rl-0003ls-Iz for qemu-devel@nongnu.org; Mon, 17 Jun 2024 02:29:21 -0400 Received: from mail-pj1-x102a.google.com ([2607:f8b0:4864:20::102a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sJ5rj-0003Se-Mf for qemu-devel@nongnu.org; Mon, 17 Jun 2024 02:29:21 -0400 Received: by mail-pj1-x102a.google.com with SMTP id 98e67ed59e1d1-2c4c7eb425fso3218054a91.1 for ; Sun, 16 Jun 2024 23:29:19 -0700 (PDT) Received: from amd.. ([2804:7f0:b400:8dcb:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2c4a75ed69csm10641863a91.14.2024.06.16.23.29.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Jun 2024 23:29:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718605758; x=1719210558; 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=H6hFwRJTCX9S1/MSxumw3Rp3MEKdi5+omxQCA2MAKlevHp4lfSbcoB++UdW8A8Ggcz RoS2kN41GHNNT4hakN0Vv83MRE/bTTF3NsxNmUZvzaoVq841FsiWfS2fxof5xtfdjc2v rBpcyBdZAkdzPNUBsAihV3XRlh1UJKwIIQFbcmDi0DbdGLlpL2l++kcO0psrEaCD4xsR mLlLeiT4BDtojCdCX3YgBqCkXYsDXhN3ZbAIlpwfM/Jp4GofXKISu9pvvweQdN/1o8Ir Ecl+YqUaBb03cHiNnnLeCtXloCb23NGQhjJTaA3WULr2NJpdE3lukAZkUp+5yR1tYf68 3NMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718605758; x=1719210558; 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=RKnpVqf9ZnzrPF2zVssLI6Nb0DEfNbntTEPr9F1rLGNKjpzQ9zO6SuhQ2K8KEwYTZi Vp9Dwx22cs+Aigyf+VWj0GJx0XioLZeL8Ik5N+9SwbcKx4gyl8kI+zddVvquRXiyw5ug Mp1lkKYxQ6OeBUbPWtUhiy8Zg2YXV5WQtCqaFZ1tpAid9LjCwJrm1+zkrwMZsiInUcH1 UyEnhbyNpw73WYNkCsTwyyTVvw1ai5L173cjN2G9Ng+mPOwfF6genrwbwiVFxjvpvr4N 92k4c7+CsN+5oikUbGL85nhGpAc/UYhADSXKpAsvZmk7waLmYBmeRhdG4fQHboOcn9jC UBjQ== X-Gm-Message-State: AOJu0YwjAsWeUkcPOSCl7LAEQs/KiRpEWtLDZYlUisIsZ7gxO+93W0QE GD+/J4mctZ/NKXM55ukJsNRv823nFwU2qr/KvjkLP2PQFbd4G0HO/uITKAApHPXOx9LGZosItlP 6 X-Google-Smtp-Source: AGHT+IEIIwuwwzDfkahuSFcJnq9ccPV0mahASjtk6NZ9s37iTVNE6RUHwo9rtSijpL3skZrMWhtSdQ== X-Received: by 2002:a17:90a:b00f:b0:2c2:d813:bffa with SMTP id 98e67ed59e1d1-2c4dbd431b5mr7658930a91.43.1718605757794; Sun, 16 Jun 2024 23:29:17 -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 v3 3/9] gdbstub: Add support for target-specific stubs Date: Mon, 17 Jun 2024 06:28:43 +0000 Message-Id: <20240617062849.3531745-4-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240617062849.3531745-1-gustavo.romero@linaro.org> References: <20240617062849.3531745-1-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::102a; envelope-from=gustavo.romero@linaro.org; helo=mail-pj1-x102a.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: 1718605813183100003 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 Reviewed-by: Alex Benn=C3=A9e --- 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