From patchwork Wed May 19 12:51:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 12267319 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DECDDC433B4 for ; Wed, 19 May 2021 13:21:22 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7EDFB600D4 for ; Wed, 19 May 2021 13:21:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7EDFB600D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54434 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljM8X-0000Fs-IY for qemu-devel@archiver.kernel.org; Wed, 19 May 2021 09:21:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33468) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljLhI-0001Me-O4; Wed, 19 May 2021 08:53:12 -0400 Received: from ozlabs.org ([203.11.71.1]:51007) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljLhD-0001Iu-GA; Wed, 19 May 2021 08:53:09 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 4FlXnh316tz9t1Q; Wed, 19 May 2021 22:52:08 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1621428728; bh=lNPPIVSq3q9zlmsi55IC/0ytJrrjeLihEY/GbwRXqmg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jWHgLhQbpVItyvhdyQu4jZiPSOTteltGyVtByF5fLevUX8Jf05uNDUHP01wZCwf1z a6FmiAUorP+DPZauCGe2Z8K7l6S+znjckzzFWnvBYcbz67UYaVLtv6RrRajhXGg7pY 3pnIuRevDIjh2vGU6zshqJ/3Q9EuojnItrWEa8PE= From: David Gibson To: peter.maydell@linaro.org, groug@kaod.org Subject: [PULL 25/48] target/ppc: Introduce gen_icount_io_start Date: Wed, 19 May 2021 22:51:25 +1000 Message-Id: <20210519125148.27720-26-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210519125148.27720-1-david@gibson.dropbear.id.au> References: <20210519125148.27720-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Received-SPF: pass client-ip=203.11.71.1; envelope-from=dgibson@ozlabs.org; helo=ozlabs.org X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, David Gibson , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Matheus Ferst Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson Create a function to handle the details for interacting with icount. Force the exit from the tb via DISAS_TOO_MANY, which allows chaining to the next tb, where the code emitted for gen_tb_start() will determine if we must exit. We can thus remove any matching conditional call to gen_stop_exception. Signed-off-by: Richard Henderson Signed-off-by: Matheus Ferst Message-Id: <20210517205025.3777947-2-matheus.ferst@eldorado.org.br> Signed-off-by: David Gibson --- target/ppc/translate.c | 174 +++++++++-------------------------------- 1 file changed, 39 insertions(+), 135 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index d51a1913a7..060ef83bc0 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -304,6 +304,20 @@ static void gen_exception_nip(DisasContext *ctx, uint32_t excp, ctx->base.is_jmp = DISAS_NORETURN; } +static void gen_icount_io_start(DisasContext *ctx) +{ + if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { + gen_io_start(); + /* + * An I/O instruction must be last in the TB. + * Chain to the next TB, and let the code from gen_tb_start + * decide if we need to return to the main loop. + * Doing this first also allows this value to be overridden. + */ + ctx->base.is_jmp = DISAS_TOO_MANY; + } +} + /* * Tells the caller what is the appropriate exception to generate and prepares * SPR registers for this exception. @@ -540,24 +554,14 @@ void spr_write_ureg(DisasContext *ctx, int sprn, int gprn) #if !defined(CONFIG_USER_ONLY) void spr_read_decr(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_decr(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_decr(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_decr(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } #endif @@ -565,24 +569,14 @@ void spr_write_decr(DisasContext *ctx, int sprn, int gprn) /* Time base */ void spr_read_tbl(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_tbl(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_read_tbu(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_tbu(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_read_atbl(DisasContext *ctx, int gprn, int sprn) @@ -598,24 +592,14 @@ void spr_read_atbu(DisasContext *ctx, int gprn, int sprn) #if !defined(CONFIG_USER_ONLY) void spr_write_tbl(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_tbl(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_tbu(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_tbu(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_atbl(DisasContext *ctx, int sprn, int gprn) @@ -631,80 +615,45 @@ void spr_write_atbu(DisasContext *ctx, int sprn, int gprn) #if defined(TARGET_PPC64) void spr_read_purr(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_purr(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_purr(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_purr(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } /* HDECR */ void spr_read_hdecr(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_hdecr(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_hdecr(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_hdecr(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_read_vtb(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_vtb(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_vtb(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_vtb(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_tbu40(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_tbu40(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } #endif @@ -912,71 +861,41 @@ void spr_write_601_ubatl(DisasContext *ctx, int sprn, int gprn) #if !defined(CONFIG_USER_ONLY) void spr_read_40x_pit(DisasContext *ctx, int gprn, int sprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_load_40x_pit(cpu_gpr[gprn], cpu_env); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_40x_pit(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_40x_pit(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_40x_dbcr0(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_store_spr(sprn, cpu_gpr[gprn]); gen_helper_store_40x_dbcr0(cpu_env, cpu_gpr[gprn]); /* We must stop translation as we may have rebooted */ gen_stop_exception(ctx); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_40x_sler(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_40x_sler(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_booke_tcr(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_booke_tcr(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } void spr_write_booke_tsr(DisasContext *ctx, int sprn, int gprn) { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_helper_store_booke_tsr(cpu_env, cpu_gpr[gprn]); - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } #endif @@ -2860,18 +2779,13 @@ static void gen_darn(DisasContext *ctx) if (l > 2) { tcg_gen_movi_i64(cpu_gpr[rD(ctx->opcode)], -1); } else { - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); if (l == 0) { gen_helper_darn32(cpu_gpr[rD(ctx->opcode)]); } else { /* Return 64-bit random for both CRN and RRN */ gen_helper_darn64(cpu_gpr[rD(ctx->opcode)]); } - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_stop_exception(ctx); - } } } #endif @@ -5013,9 +4927,7 @@ static void gen_rfi(DisasContext *ctx) } /* Restore CPU state */ CHK_SV; - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_update_cfar(ctx, ctx->cia); gen_helper_rfi(cpu_env); ctx->base.is_jmp = DISAS_EXIT; @@ -5030,9 +4942,7 @@ static void gen_rfid(DisasContext *ctx) #else /* Restore CPU state */ CHK_SV; - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_update_cfar(ctx, ctx->cia); gen_helper_rfid(cpu_env); ctx->base.is_jmp = DISAS_EXIT; @@ -5047,9 +4957,7 @@ static void gen_rfscv(DisasContext *ctx) #else /* Restore CPU state */ CHK_SV; - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); gen_update_cfar(ctx, ctx->cia); gen_helper_rfscv(cpu_env); ctx->base.is_jmp = DISAS_EXIT; @@ -5379,9 +5287,7 @@ static void gen_mtmsrd(DisasContext *ctx) CHK_SV; #if !defined(CONFIG_USER_ONLY) - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); if (ctx->opcode & 0x00010000) { /* L=1 form only updates EE and RI */ TCGv t0 = tcg_temp_new(); @@ -5416,9 +5322,7 @@ static void gen_mtmsr(DisasContext *ctx) CHK_SV; #if !defined(CONFIG_USER_ONLY) - if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } + gen_icount_io_start(ctx); if (ctx->opcode & 0x00010000) { /* L=1 form only updates EE and RI */ TCGv t0 = tcg_temp_new();