From patchwork Wed Dec 13 06:41:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 1875499 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=daynix-com.20230601.gappssmtp.com header.i=@daynix-com.20230601.gappssmtp.com header.a=rsa-sha256 header.s=20230601 header.b=Q66WoMVy; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SqmGW6YH7z20LT for ; Wed, 13 Dec 2023 17:46:11 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rDIy4-0002aD-3i; Wed, 13 Dec 2023 01:43:40 -0500 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 1rDIxe-00022U-SE for qemu-devel@nongnu.org; Wed, 13 Dec 2023 01:43:18 -0500 Received: from mail-il1-x12b.google.com ([2607:f8b0:4864:20::12b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rDIxY-0005f4-Tj for qemu-devel@nongnu.org; Wed, 13 Dec 2023 01:43:11 -0500 Received: by mail-il1-x12b.google.com with SMTP id e9e14a558f8ab-35f697bf477so3916225ab.3 for ; Tue, 12 Dec 2023 22:43:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1702449787; x=1703054587; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=pitS5c+aGFir0XJuyo8p65Ve6MtEyDC5YFygbMBeE6Q=; b=Q66WoMVyoKHBaaefsa6ePuPdnnlUf0s44d08uO8NhqT8B6ipDcGmql/DYy/dB2dAzH NVOLyv1QD9u8eRZhICD6Piv7F9lnX5XgKqY3JxmtNabyml0x3YGrY7WYPQy2yVpGXvp/ 90ymt4NSuT6/p6zCCDzb8jht3FFm0FRTpDBHraSDFEltsD4aMbYHzVi4fSFbWlnxkgpo DsyX7s0uBMrqX6QUkhtvaTnJzOkcXQveLVQA1h4bsHtydzhb1maejxLJzNsUVrI0Hy1h e+5qQeLgsJX8cQUU1IM3iR6aGS/c4XEn17hvWxaWbumoJdSD4Dg+DYiF1xGcb60ajbNT 2U7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702449787; x=1703054587; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=pitS5c+aGFir0XJuyo8p65Ve6MtEyDC5YFygbMBeE6Q=; b=sOMpGNtyBzng4GwNRUBBia5Qa5b+KC5VQTAnF+pGdjXIhlR9BdrUCaI1LxDmAcyUXN ZvMwUCG9hewdHNJHkG/DAQGu6ri8fb1f8rQELBRCCtiYAoXT5nAg/7k1arKeaFKHnkxF sRgUa3Hhxzvtk//Fm/0CA7bwXeHOsxDAKGdf4Q6Ee//27v29h7rlSs2HveuyepGWoBen oea2SzYX3BE/f104IjsDzqIN/u+9W5JYyxUXnyabS0tX+dOYl8xKB2E51P97LND8FzBe sxCTuBgl+QYOinPj9Yz1xZPZ3Ba+CCRqNlVd1VUjamCTxSs6vmjferpz92UAIWXCcmKy l+3Q== X-Gm-Message-State: AOJu0Yzyy0m0HRavKbKLPYcBFkIuJKliCNNPxmRFHu2sjdGvkRHakiVn Ev1ztKTkM2SGluzEYWPACzIG2A== X-Google-Smtp-Source: AGHT+IGt+ZQ1QDUOGj74X5X8K3W67Kk+kXh7ZYW3u3sXkgxm+MC/2ZkM9TcSLxMULevf3rpEzqVU5A== X-Received: by 2002:a05:6e02:20e2:b0:35d:5ac0:5062 with SMTP id q2-20020a056e0220e200b0035d5ac05062mr12276410ilv.48.1702449787428; Tue, 12 Dec 2023 22:43:07 -0800 (PST) Received: from localhost ([157.82.205.15]) by smtp.gmail.com with UTF8SMTPSA id q14-20020a170902dace00b001d08e08003esm9715764plx.174.2023.12.12.22.43.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Dec 2023 22:43:06 -0800 (PST) From: Akihiko Odaki Date: Wed, 13 Dec 2023 15:41:11 +0900 Subject: [PATCH v17 12/14] plugins: Use different helpers when reading registers MIME-Version: 1.0 Message-Id: <20231213-gdb-v17-12-777047380591@daynix.com> References: <20231213-gdb-v17-0-777047380591@daynix.com> In-Reply-To: <20231213-gdb-v17-0-777047380591@daynix.com> To: Peter Maydell , Nicholas Piggin , Daniel Henrique Barboza , =?utf-8?q?C=C3=A9dric_Le_?= =?utf-8?q?Goater?= , Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , =?utf-8?q?Alex_Benn=C3=A9e?= , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= , Brian Cain , Song Gao , Laurent Vivier , "Edgar E. Iglesias" , Richard Henderson , David Hildenbrand , Ilya Leoshkevich , Thomas Huth , Eduardo Habkost , Marcel Apfelbaum , Yanan Wang , Michael Rolnik , Paolo Bonzini , Yoshinori Sato , John Snow , Cleber Rosa , Alexandre Iooss , Mahmoud Mandour , Mikhail Tyutin , Aleksandr Anenkov Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, qemu-ppc@nongnu.org, qemu-riscv@nongnu.org, qemu-s390x@nongnu.org, 20231213-riscv-v7-0-a760156a337f@daynix.com, Akihiko Odaki X-Mailer: b4 0.12.4 Received-SPF: none client-ip=2607:f8b0:4864:20::12b; envelope-from=akihiko.odaki@daynix.com; helo=mail-il1-x12b.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This avoids optimizations incompatible when reading registers. Signed-off-by: Akihiko Odaki --- accel/tcg/plugin-helpers.h | 3 ++- include/qemu/plugin.h | 1 + accel/tcg/plugin-gen.c | 43 +++++++++++++++++++++++++++++++++++++++---- plugins/api.c | 12 ++++++++++-- 4 files changed, 52 insertions(+), 7 deletions(-) diff --git a/accel/tcg/plugin-helpers.h b/accel/tcg/plugin-helpers.h index 8e685e065454..11796436f350 100644 --- a/accel/tcg/plugin-helpers.h +++ b/accel/tcg/plugin-helpers.h @@ -1,4 +1,5 @@ #ifdef CONFIG_PLUGIN -DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, ptr) +DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb_no_wg, TCG_CALL_NO_WG | TCG_CALL_PLUGIN, void, i32, ptr) +DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb_no_rwg, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, ptr) DEF_HELPER_FLAGS_4(plugin_vcpu_mem_cb, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, i32, i64, ptr) #endif diff --git a/include/qemu/plugin.h b/include/qemu/plugin.h index 7fdc3a4849ff..b0c5ac682939 100644 --- a/include/qemu/plugin.h +++ b/include/qemu/plugin.h @@ -73,6 +73,7 @@ enum plugin_dyn_cb_type { enum plugin_dyn_cb_subtype { PLUGIN_CB_REGULAR, + PLUGIN_CB_REGULAR_R, PLUGIN_CB_INLINE, PLUGIN_N_CB_SUBTYPES, }; diff --git a/accel/tcg/plugin-gen.c b/accel/tcg/plugin-gen.c index 78b331b25107..b37ce7683e69 100644 --- a/accel/tcg/plugin-gen.c +++ b/accel/tcg/plugin-gen.c @@ -79,6 +79,7 @@ enum plugin_gen_from { enum plugin_gen_cb { PLUGIN_GEN_CB_UDATA, + PLUGIN_GEN_CB_UDATA_R, PLUGIN_GEN_CB_INLINE, PLUGIN_GEN_CB_MEM, PLUGIN_GEN_ENABLE_MEM_HELPER, @@ -90,7 +91,10 @@ enum plugin_gen_cb { * These helpers are stubs that get dynamically switched out for calls * direct to the plugin if they are subscribed to. */ -void HELPER(plugin_vcpu_udata_cb)(uint32_t cpu_index, void *udata) +void HELPER(plugin_vcpu_udata_cb_no_wg)(uint32_t cpu_index, void *udata) +{ } + +void HELPER(plugin_vcpu_udata_cb_no_rwg)(uint32_t cpu_index, void *udata) { } void HELPER(plugin_vcpu_mem_cb)(unsigned int vcpu_index, @@ -98,7 +102,7 @@ void HELPER(plugin_vcpu_mem_cb)(unsigned int vcpu_index, void *userdata) { } -static void gen_empty_udata_cb(void) +static void gen_empty_udata_cb(void (*gen_helper)(TCGv_i32, TCGv_ptr)) { TCGv_i32 cpu_index = tcg_temp_ebb_new_i32(); TCGv_ptr udata = tcg_temp_ebb_new_ptr(); @@ -106,12 +110,22 @@ static void gen_empty_udata_cb(void) tcg_gen_movi_ptr(udata, 0); tcg_gen_ld_i32(cpu_index, tcg_env, -offsetof(ArchCPU, env) + offsetof(CPUState, cpu_index)); - gen_helper_plugin_vcpu_udata_cb(cpu_index, udata); + gen_helper(cpu_index, udata); tcg_temp_free_ptr(udata); tcg_temp_free_i32(cpu_index); } +static void gen_empty_udata_cb_no_wg(void) +{ + gen_empty_udata_cb(gen_helper_plugin_vcpu_udata_cb_no_wg); +} + +static void gen_empty_udata_cb_no_rwg(void) +{ + gen_empty_udata_cb(gen_helper_plugin_vcpu_udata_cb_no_rwg); +} + /* * For now we only support addi_i64. * When we support more ops, we can generate one empty inline cb for each. @@ -192,7 +206,8 @@ static void plugin_gen_empty_callback(enum plugin_gen_from from) gen_empty_mem_helper); /* fall through */ case PLUGIN_GEN_FROM_TB: - gen_wrapped(from, PLUGIN_GEN_CB_UDATA, gen_empty_udata_cb); + gen_wrapped(from, PLUGIN_GEN_CB_UDATA, gen_empty_udata_cb_no_rwg); + gen_wrapped(from, PLUGIN_GEN_CB_UDATA_R, gen_empty_udata_cb_no_wg); gen_wrapped(from, PLUGIN_GEN_CB_INLINE, gen_empty_inline_cb); break; default: @@ -588,6 +603,12 @@ static void plugin_gen_tb_udata(const struct qemu_plugin_tb *ptb, inject_udata_cb(ptb->cbs[PLUGIN_CB_REGULAR], begin_op); } +static void plugin_gen_tb_udata_r(const struct qemu_plugin_tb *ptb, + TCGOp *begin_op) +{ + inject_udata_cb(ptb->cbs[PLUGIN_CB_REGULAR_R], begin_op); +} + static void plugin_gen_tb_inline(const struct qemu_plugin_tb *ptb, TCGOp *begin_op) { @@ -602,6 +623,14 @@ static void plugin_gen_insn_udata(const struct qemu_plugin_tb *ptb, inject_udata_cb(insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR], begin_op); } +static void plugin_gen_insn_udata_r(const struct qemu_plugin_tb *ptb, + TCGOp *begin_op, int insn_idx) +{ + struct qemu_plugin_insn *insn = g_ptr_array_index(ptb->insns, insn_idx); + + inject_udata_cb(insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR_R], begin_op); +} + static void plugin_gen_insn_inline(const struct qemu_plugin_tb *ptb, TCGOp *begin_op, int insn_idx) { @@ -721,6 +750,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb) case PLUGIN_GEN_CB_UDATA: plugin_gen_tb_udata(plugin_tb, op); break; + case PLUGIN_GEN_CB_UDATA_R: + plugin_gen_tb_udata_r(plugin_tb, op); + break; case PLUGIN_GEN_CB_INLINE: plugin_gen_tb_inline(plugin_tb, op); break; @@ -737,6 +769,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb) case PLUGIN_GEN_CB_UDATA: plugin_gen_insn_udata(plugin_tb, op, insn_idx); break; + case PLUGIN_GEN_CB_UDATA_R: + plugin_gen_insn_udata_r(plugin_tb, op, insn_idx); + break; case PLUGIN_GEN_CB_INLINE: plugin_gen_insn_inline(plugin_tb, op, insn_idx); break; diff --git a/plugins/api.c b/plugins/api.c index 5521b0ad36c7..ac39cdea0b35 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -89,7 +89,11 @@ void qemu_plugin_register_vcpu_tb_exec_cb(struct qemu_plugin_tb *tb, void *udata) { if (!tb->mem_only) { - plugin_register_dyn_cb__udata(&tb->cbs[PLUGIN_CB_REGULAR], + int index = flags == QEMU_PLUGIN_CB_R_REGS || + flags == QEMU_PLUGIN_CB_RW_REGS ? + PLUGIN_CB_REGULAR_R : PLUGIN_CB_REGULAR; + + plugin_register_dyn_cb__udata(&tb->cbs[index], cb, flags, udata); } } @@ -109,7 +113,11 @@ void qemu_plugin_register_vcpu_insn_exec_cb(struct qemu_plugin_insn *insn, void *udata) { if (!insn->mem_only) { - plugin_register_dyn_cb__udata(&insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR], + int index = flags == QEMU_PLUGIN_CB_R_REGS || + flags == QEMU_PLUGIN_CB_RW_REGS ? + PLUGIN_CB_REGULAR_R : PLUGIN_CB_REGULAR; + + plugin_register_dyn_cb__udata(&insn->cbs[PLUGIN_CB_INSN][index], cb, flags, udata); } }