From patchwork Thu Jun 20 23:46:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: YunQiang Su X-Patchwork-Id: 13706562 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 80CB4C2BA18 for ; Thu, 20 Jun 2024 23:47:39 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sKRUM-0005tq-Iy; Thu, 20 Jun 2024 19:46:46 -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 1sKRUJ-0005t9-JE for qemu-devel@nongnu.org; Thu, 20 Jun 2024 19:46:43 -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 1sKRUH-00063C-Sf for qemu-devel@nongnu.org; Thu, 20 Jun 2024 19:46:43 -0400 Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1f44b5b9de6so12114475ad.3 for ; Thu, 20 Jun 2024 16:46:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718927200; x=1719532000; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:from:to:cc:subject:date:message-id:reply-to; bh=NoVnXxozX2Jamz42DuJRZj2z8nz8xYd9StQ7DmE2FI0=; b=eDq+mTHqC+tLEzTSYSLMg9BQHOPEZw4iuzPbgDfaVU+K+0W+YSTDIntqrlA1worV5h +vUMHP/UrbeA15SprRV+qTRmuEEx/YazuzrKLnDVGskig24Hl2CVLrogZqv4LbTrqCUh WJ5Hs+tYy1o9S8qEV7XHYedL3mFe61Zr7t7eecgxwI0V5v+A/rLzsxpqyDWo8rwG9NuN WaboU4S8X4VJjZSaeWAoaaokmrNg3hkCVFcp0CZncV0ca7EOI3Hqlsk2RHEt+NONZuHW ZRqfVs1K9Aja0ZXp50AmN3fbwIeHnJewL7KcNECeaZHLOKqCGZ+DRRL0q5bB9frS4Bzh DIog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718927200; x=1719532000; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=NoVnXxozX2Jamz42DuJRZj2z8nz8xYd9StQ7DmE2FI0=; b=S3corHPtc+FtYZBfYcFjtXpJHKHLRKiKQL8FpdD5NydW/zX3h+bKLR2Y5CaoK7R49z 89nIB5z6BZFgRZSaLU0nFDKTCv8iXvq+GwQxU8xcdR4Jw5AcmJRRgfIynDGWiAldX9Ds /7R5Bu7w2GQLsL0moCCf+xYlsmlOx1spj1l+atAzbZiNYFDIstj8vSY0e09N1V8dLjmT wsI+HLTxpu5AHLNK54yu8J187R7JrgNEfdbNlb3ifQgLGON0fuvPIgPYP0BdGT23szGz Yr6iIw7iCKqly0z1/ohwn4ntx2HCAL8vgp6PrhUKH+v60iCNqKfJMlM458ddjk76G0bv L4lg== X-Gm-Message-State: AOJu0YzUD23396CS2lPprkV4PuAxX0zmde3epd21ffTQyVT8bVglfAiL flLm909aUljL7J29nFHRCDllhUGOAP1N2aIbRG/g3glr+11fTyflnZwZnPxZ X-Google-Smtp-Source: AGHT+IFqHSQ/dPO8x3SeYEj6J5ZKRfDk+Y+qF97simhKcZfPN6KrYl9ym4CymrL5bQIXjGCffWM62g== X-Received: by 2002:a17:902:e542:b0:1f7:3217:3519 with SMTP id d9443c01a7336-1f9aa3da6f7mr88647635ad.25.1718927199864; Thu, 20 Jun 2024 16:46:39 -0700 (PDT) Received: from localhost.localdomain ([194.169.55.179]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f9ebbc7d39sm1738885ad.301.2024.06.20.16.46.38 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 20 Jun 2024 16:46:39 -0700 (PDT) From: YunQiang Su To: qemu-devel@nongnu.org Cc: macro@orcam.me.uk, philmd@linaro.org, YunQiang Su Subject: [PATCH] mips: pass code of conditional trap Date: Fri, 21 Jun 2024 07:46:33 +0800 Message-Id: <20240620234633.74447-1-syq@debian.org> X-Mailer: git-send-email 2.39.3 (Apple Git-146) MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::629; envelope-from=wzssyqa@gmail.com; helo=mail-pl1-x629.google.com 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_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Linux and We use the code of conditional trap instructions to emit signals other than simple SIGTRAP. Currently, code 6 (overflow), 7 (div by zero) are supported. It means that if code 7 is used with a conditional trap instruction, a SIGFPE instead of SIGTRAP will emit. But when `gen_trap` we didn't pass the code as we use `generate_exception`, which has no info about the code. Let's introduce a new function `generate_exception_code` for it. --- target/mips/tcg/translate.c | 8 +++++++- target/mips/tcg/translate.h | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c index 333469b268..e680a1c2f2 100644 --- a/target/mips/tcg/translate.c +++ b/target/mips/tcg/translate.c @@ -1353,6 +1353,12 @@ void generate_exception(DisasContext *ctx, int excp) gen_helper_raise_exception(tcg_env, tcg_constant_i32(excp)); } +void generate_exception_with_code(DisasContext *ctx, int excp, int code) +{ + gen_helper_raise_exception_err(tcg_env, tcg_constant_i32(excp), + tcg_constant_i32(code)); +} + void generate_exception_end(DisasContext *ctx, int excp) { generate_exception_err(ctx, excp, 0); @@ -4553,7 +4559,7 @@ static void gen_trap(DisasContext *ctx, uint32_t opc, if (ctx->hflags != ctx->saved_hflags) { tcg_gen_movi_i32(hflags, ctx->hflags); } - generate_exception(ctx, EXCP_TRAP); + generate_exception_with_code(ctx, EXCP_TRAP, code); gen_set_label(l1); } } diff --git a/target/mips/tcg/translate.h b/target/mips/tcg/translate.h index 2b6646b339..e3d544b478 100644 --- a/target/mips/tcg/translate.h +++ b/target/mips/tcg/translate.h @@ -134,6 +134,7 @@ enum { } while (0) void generate_exception(DisasContext *ctx, int excp); +void generate_exception_with_code(DisasContext *ctx, int excp, int code); void generate_exception_err(DisasContext *ctx, int excp, int err); void generate_exception_end(DisasContext *ctx, int excp); void generate_exception_break(DisasContext *ctx, int code);