From patchwork Sun Mar 23 17:37:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 875634 Delivered-To: patch@linaro.org Received: by 2002:a5d:5f4c:0:b0:38f:210b:807b with SMTP id cm12csp1808535wrb; Sun, 23 Mar 2025 10:44:13 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCVblgkWBfyG0ZrN5xvAKVX6F0mCgFjiGinyA8mEoUsa8cpH4QPh9QUOtBwcvAUG8bWxMavQrg==@linaro.org X-Google-Smtp-Source: AGHT+IFqjr995Cy7BpxryRSgfVgM0WKVla1ZaZY2rTp7HeqGYVXh7NXVLl3CnMIERSblkrAoHT6P X-Received: by 2002:a05:6214:5099:b0:6d1:7433:3670 with SMTP id 6a1803df08f44-6eb3f284a82mr137691716d6.4.1742751853682; Sun, 23 Mar 2025 10:44:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1742751853; cv=none; d=google.com; s=arc-20240605; b=GdkSdcB2t4hHoP7KTGWvhl4EfZv4HUuOlAXBnbZ2052inKhmQoYeu22rE9QMhHLN8j BX/V/3c/juNKn1zvfMY51hd1CDlqEmCC7CG92XJBRABsyrc+KpIuRjncZRBbygJ+BsOU HD9uwwdgiZSPfKugWTD4ghyXwI168BlnK7pPD2w7MQmJd5s36/5RGQjBKjKpf2m49++E PcPICIiJ+p+5oGbbp+htpiYQ9fW4j3LyDG11QmK1ac+jPa4JyoFNzEswbjgewnQW5TFn sbDIEkzClDgJQJD3d+0Wfo0azsDCO3gM5Pfajqiyg1Q5XmKYrzJxJqujKFbdMghyJeVO 5S6g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=x+vLIWb2Nw1GLPq2/BHeGFtpTQCooqKOLeKJY8lQCig=; fh=Pq5/+ra/32jR7ARhXA/UPD87Ay4JBQ4WSaLIekKYvL0=; b=QfAwvSF0srQmwd5oWbbqD6BfUy5/OJzLZoaIk5gcLZjYL3FdDj3WGYygPz8hBOGIHL OgjkA4aKYiXViGIwYbWGRdArMNzmGL+aAlL5XQOocYPIr/cqoNVWYkc/c3WBim2z4+EY sJVGONN/kmmBMIIiMxZsLeHNhFYm7S4C+5603LqsTORLXZRwLf3GxV75XCWf3XiuFCZv QUrA+CU6GPnTGVpZbiPFAnqbFSM73F9REtHCxqZ8nD+lPtP1rxiVztX2Itsx7wFmy7JS Azh2k/a2hdwTd/mI8UVZ+w6CJKIk/Zo2Zrxo02xErY+N60kF28pVomXo3hWxdKR4lJCx 3IYA==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=DAkiNHvG; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id 6a1803df08f44-6eb3ef48e7dsi61286196d6.42.2025.03.23.10.44.13 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 23 Mar 2025 10:44:13 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=DAkiNHvG; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1twPGZ-0005rO-BT; Sun, 23 Mar 2025 13:37:43 -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 1twPGX-0005qA-QP for qemu-devel@nongnu.org; Sun, 23 Mar 2025 13:37:41 -0400 Received: from mail-pl1-x630.google.com ([2607:f8b0:4864:20::630]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1twPGW-0002uR-6u for qemu-devel@nongnu.org; Sun, 23 Mar 2025 13:37:41 -0400 Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-224171d6826so46322045ad.3 for ; Sun, 23 Mar 2025 10:37:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1742751459; x=1743356259; 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=x+vLIWb2Nw1GLPq2/BHeGFtpTQCooqKOLeKJY8lQCig=; b=DAkiNHvGRsS2k3c48YfAaog5bKI+lqpkPoryIG0abF8K0hIfyuBPUYvze1rHiMihYk V+KUSL4qCNR8gABd5ic4nL3jCnMLy1/NrBVuLaZah700RnTJwlSoq/8HibfqNeJKtsvH /3Mu5TVJRznBaAW0NtxJMYN4rIUR//Hv/98n6IecopfxtpXqhFpOsZodMWUmu95iqj7t 06iEPfX/6heyW2gBNdFcjwBPC5mWuDbMg334GgAsVZ2GSkxKt0dkt461lpn/XevD33jQ DFRBAZIFpSn2iaO42+buW7nWAX6mC7J1/55uYBijfT6wZlcwa6Dm+jLwWebwYHTKEZPV RVkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742751459; x=1743356259; 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=x+vLIWb2Nw1GLPq2/BHeGFtpTQCooqKOLeKJY8lQCig=; b=LpTfP4rYRed+NS7JI/cSE6Cmu0lFbkbiDTP/1mvZbYA3SJ/dlLwISo9uIFWozpQxP1 z1aQWIa0i/8G/lk0i1BJYYjB/TWmgNe++IGC4KOOXrpwUvpaFRFuDnJ1iR2MTVQXj4eM HmdUEBfkrpIF7w1Gs9aKW0K83fN+5A5ZD+QlZLFZaD1WK3RAAnA0J6NjAadg6SeOzL4Y uPTat+wLBGoeGr460QhH1pcCcKFi0akbCTDCBxHKcGC1Zgw64ocQIMpcOVFJwnaZxNZr Al/y6FfZye/U07LoDfYA/K2DUvj2c2zkS4obYtzLJClKLyXbFNK5y4hAcseC8QGqFA2j THKg== X-Gm-Message-State: AOJu0YyJ16MCQTt5SzACrTBcKUGETw4rdDVaCr+nNFBhBOCC4/HsPT8c yXLvb/GDXRggZ/f9vv5V3kFO4fNZgfaizxwSNU8IAadBOXIeLyb/wHj1gUymErjvW/F0e5TAkKu / X-Gm-Gg: ASbGnct4pW4DnLMYxKP75xbYSr2RUzwZL6A8tApSi3IREearOmuTs90Sy0qHwLDohR2 gY8qlkWXcuCxXdR+JATZIJLw3JhJZGHdXBsBBNj4GnOOtHt1r3LWPdkOtmB2Lqkb7GC/meQGxYK Wc7r6FY+mCxFbnu9E203o+0AoZTKoVo9eC/YzLzVp9eqBQrQ/q4xSkhNSNxVzh5LDvQFu9Z088j FNQGp5z9vq55MtaX7850Q5QRLQvcImjLQxQXcILE55OSRGtI03lmi+WFEKKrhKW2jL3n8qPz5dX qZ3XiQyQgJ1+rFZXU7DPv6Y+/9fD9UO5uPgvxxlELCJc++a/4pmhkTZqRHfklleW7NwhS5x+0nQ c X-Received: by 2002:a17:903:2284:b0:220:cb6c:2e30 with SMTP id d9443c01a7336-22780e312bbmr174358795ad.49.1742751458814; Sun, 23 Mar 2025 10:37:38 -0700 (PDT) Received: from stoup.. (174-21-74-48.tukw.qwest.net. [174.21.74.48]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22781209ff3sm54075165ad.257.2025.03.23.10.37.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Mar 2025 10:37:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: mrolnik@gmail.com, philmd@linaro.org, pierrick.bouvier@linaro.org Subject: [PATCH 10/17] target/avr: Update cpu_sp after push and pop Date: Sun, 23 Mar 2025 10:37:22 -0700 Message-ID: <20250323173730.3213964-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250323173730.3213964-1-richard.henderson@linaro.org> References: <20250323173730.3213964-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.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 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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Not that AVR has memory paging traps, but it's better form to allow the memory operation to finish before updating the cpu register. Signed-off-by: Richard Henderson Reviewed-by: Pierrick Bouvier --- target/avr/translate.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/target/avr/translate.c b/target/avr/translate.c index 6bb4154dff..3446007be1 100644 --- a/target/avr/translate.c +++ b/target/avr/translate.c @@ -967,40 +967,38 @@ static void gen_push_ret(DisasContext *ctx, int ret) } else if (avr_feature(ctx->env, AVR_FEATURE_2_BYTE_PC)) { TCGv t0 = tcg_constant_i32(ret & 0x00ffff); - tcg_gen_subi_tl(cpu_sp, cpu_sp, 1); - gen_data_store_raw(ctx, t0, cpu_sp, 0, MO_BEUW); - tcg_gen_subi_tl(cpu_sp, cpu_sp, 1); + gen_data_store_raw(ctx, t0, cpu_sp, -1, MO_BEUW); + tcg_gen_subi_tl(cpu_sp, cpu_sp, 2); } else if (avr_feature(ctx->env, AVR_FEATURE_3_BYTE_PC)) { TCGv lo = tcg_constant_i32(ret & 0x0000ff); TCGv hi = tcg_constant_i32((ret & 0xffff00) >> 8); gen_data_store_raw(ctx, lo, cpu_sp, 0, MO_UB); - tcg_gen_subi_tl(cpu_sp, cpu_sp, 2); - gen_data_store_raw(ctx, hi, cpu_sp, 0, MO_BEUW); - tcg_gen_subi_tl(cpu_sp, cpu_sp, 1); + gen_data_store_raw(ctx, hi, cpu_sp, -2, MO_BEUW); + tcg_gen_subi_tl(cpu_sp, cpu_sp, 3); + } else { + g_assert_not_reached(); } } static void gen_pop_ret(DisasContext *ctx, TCGv ret) { if (avr_feature(ctx->env, AVR_FEATURE_1_BYTE_PC)) { + gen_data_load_raw(ctx, ret, cpu_sp, 1, MO_UB); tcg_gen_addi_tl(cpu_sp, cpu_sp, 1); - gen_data_load_raw(ctx, ret, cpu_sp, 0, MO_UB); } else if (avr_feature(ctx->env, AVR_FEATURE_2_BYTE_PC)) { - tcg_gen_addi_tl(cpu_sp, cpu_sp, 1); - gen_data_load_raw(ctx, ret, cpu_sp, 0, MO_BEUW); - tcg_gen_addi_tl(cpu_sp, cpu_sp, 1); + gen_data_load_raw(ctx, ret, cpu_sp, 1, MO_BEUW); + tcg_gen_addi_tl(cpu_sp, cpu_sp, 2); } else if (avr_feature(ctx->env, AVR_FEATURE_3_BYTE_PC)) { - TCGv lo = tcg_temp_new_i32(); TCGv hi = tcg_temp_new_i32(); - tcg_gen_addi_tl(cpu_sp, cpu_sp, 1); - gen_data_load_raw(ctx, hi, cpu_sp, 0, MO_BEUW); + gen_data_load_raw(ctx, hi, cpu_sp, 1, MO_BEUW); + gen_data_load_raw(ctx, ret, cpu_sp, 3, MO_UB); + tcg_gen_addi_tl(cpu_sp, cpu_sp, 3); - tcg_gen_addi_tl(cpu_sp, cpu_sp, 2); - gen_data_load_raw(ctx, lo, cpu_sp, 0, MO_UB); - - tcg_gen_deposit_tl(ret, lo, hi, 8, 16); + tcg_gen_deposit_tl(ret, ret, hi, 8, 16); + } else { + g_assert_not_reached(); } }