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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id w13sm37838852wrr.67.2020.06.26.08.14.50 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jun 2020 08:14:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=Z0lRJqULuNMXERsdHXo4sn61X1OFLxEJyzOhHFNclDo=; b=cKgrCgYo8puFlpGPDhYJbcC85AeAJy4TTSutuFXDjq9WBTHQ3aeb1OngvIsHpmDQOC KvUFZ2ljO+N5AxEcO7Teg/00jTZLJC0NkZA3TWh6hTNf2CjpkHY2/tz4UtsD5gOVuL4k T+7J4ph5GecIDTkvPqT/lE7D9qMQC9Cnj0UStnO5rKMCu+dRnQOSLd7WyOxBYn7qk7PS vMwslapTD4qwGKCQQFGG+yvvCupYiu2V21PnNhZrtUBxtQGtNq83T9XTE/YyHKO9zeN1 487GP5UWexD3k9QwSHQj58ieSq/CvtoJvE+zNzwrj16k/tcy8CeIhQQNEyFwooLwg/DO 7LOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Z0lRJqULuNMXERsdHXo4sn61X1OFLxEJyzOhHFNclDo=; b=ksIoGM5F5r5btGzWOzXoLWPS6+Pozvyo2HEuOuSumZwVEF8Biz9SDktpQ2TcP1OIx6 BEFYbFOyjaMSOFQ124gT116cT7pgqeaECJZNZqq7So61CDi9x6OX5SKdkji2ZifNdDeg pWwcYuo6hi0j3+PG5oSK4J7nIdB8n9zp+OeMYLgD2lz7B9kS5ktj6E0u3J+Il3PuOqjw XuhgHBi8Bi5XPrtknWRRubbl5TwgoDIOl6KG8sn673svsgMlFcHmPaLJ+u4QRHozdL2q pqez2hXY+pSkv059x7P7U8nRw1oPe0HanTakEYLgZvqF7qvX2A86ZyXjxQvtb6PV7gi2 XhuQ== X-Gm-Message-State: AOAM531pxHp1Lvry7wXQh4OG0lqXVVRJSCGUjVT//BObccUY+26Bdn4x gAKv4w8xvE8AWSeOMwbCu6GklN16SEU0XA== X-Google-Smtp-Source: ABdhPJzUFl/K06e1wWq3nqO7kqav9dMfIXSyNWGg1nksp30lASgmWbp0eMhHeHuKTwOfSZNvx0HSjQ== X-Received: by 2002:adf:a396:: with SMTP id l22mr4308707wrb.24.1593184491181; Fri, 26 Jun 2020 08:14:51 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 22/57] target/arm: Revise decoding for disas_add_sub_imm Date: Fri, 26 Jun 2020 16:13:49 +0100 Message-Id: <20200626151424.30117-23-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200626151424.30117-1-peter.maydell@linaro.org> References: <20200626151424.30117-1-peter.maydell@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=2a00:1450:4864:20::442; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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=_AUTOLEARN 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" From: Richard Henderson The current Arm ARM has adjusted the official decode of "Add/subtract (immediate)" so that the shift field is only bit 22, and bit 23 is part of the op1 field of the parent category "Data processing - immediate". Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20200626033144.790098-11-richard.henderson@linaro.org Suggested-by: Peter Maydell Signed-off-by: Richard Henderson Signed-off-by: Peter Maydell --- target/arm/translate-a64.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 30683061f94..03aa0925983 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -3754,22 +3754,22 @@ static void disas_pc_rel_adr(DisasContext *s, uint3= 2_t insn) /* * Add/subtract (immediate) * - * 31 30 29 28 24 23 22 21 10 9 5 4 0 - * +--+--+--+-----------+-----+-------------+-----+-----+ - * |sf|op| S| 1 0 0 0 1 |shift| imm12 | Rn | Rd | - * +--+--+--+-----------+-----+-------------+-----+-----+ + * 31 30 29 28 23 22 21 10 9 5 4 0 + * +--+--+--+-------------+--+-------------+-----+-----+ + * |sf|op| S| 1 0 0 0 1 0 |sh| imm12 | Rn | Rd | + * +--+--+--+-------------+--+-------------+-----+-----+ * * sf: 0 -> 32bit, 1 -> 64bit * op: 0 -> add , 1 -> sub * S: 1 -> set flags - * shift: 00 -> LSL imm by 0, 01 -> LSL imm by 12 + * sh: 1 -> LSL imm by 12 */ static void disas_add_sub_imm(DisasContext *s, uint32_t insn) { int rd =3D extract32(insn, 0, 5); int rn =3D extract32(insn, 5, 5); uint64_t imm =3D extract32(insn, 10, 12); - int shift =3D extract32(insn, 22, 2); + bool shift =3D extract32(insn, 22, 1); bool setflags =3D extract32(insn, 29, 1); bool sub_op =3D extract32(insn, 30, 1); bool is_64bit =3D extract32(insn, 31, 1); @@ -3778,15 +3778,8 @@ static void disas_add_sub_imm(DisasContext *s, uint3= 2_t insn) TCGv_i64 tcg_rd =3D setflags ? cpu_reg(s, rd) : cpu_reg_sp(s, rd); TCGv_i64 tcg_result; =20 - switch (shift) { - case 0x0: - break; - case 0x1: + if (shift) { imm <<=3D 12; - break; - default: - unallocated_encoding(s); - return; } =20 tcg_result =3D tcg_temp_new_i64(); @@ -4174,7 +4167,7 @@ static void disas_data_proc_imm(DisasContext *s, uint= 32_t insn) case 0x20: case 0x21: /* PC-rel. addressing */ disas_pc_rel_adr(s, insn); break; - case 0x22: case 0x23: /* Add/subtract (immediate) */ + case 0x22: /* Add/subtract (immediate) */ disas_add_sub_imm(s, insn); break; case 0x24: /* Logical (immediate) */ --=20 2.20.1