From nobody Mon Feb 9 08:33:59 2026 Delivered-To: importer@patchew.org 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; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1581041355270236.2180818953077; Thu, 6 Feb 2020 18:09:15 -0800 (PST) Received: from localhost ([::1]:49054 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izt4z-0005hK-HH for importer@patchew.org; Thu, 06 Feb 2020 21:09:14 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:59763) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izsvj-0006EF-VD for qemu-devel@nongnu.org; Thu, 06 Feb 2020 20:59:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1izsvi-0001Ib-4l for qemu-devel@nongnu.org; Thu, 06 Feb 2020 20:59:39 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:53085 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1izsvh-00018T-P9 for qemu-devel@nongnu.org; Thu, 06 Feb 2020 20:59:38 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id E3CF31A20B2; Fri, 7 Feb 2020 02:58:22 +0100 (CET) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.14.106]) by mail.rt-rk.com (Postfix) with ESMTPSA id 7CFAB1A20F5; Fri, 7 Feb 2020 02:58:22 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Subject: [PATCH rc5 10/32] target/avr: Add instruction translation - Register definitions Date: Fri, 7 Feb 2020 02:57:38 +0100 Message-Id: <1581040680-308-11-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1581040680-308-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1581040680-308-1-git-send-email-aleksandar.markovic@rt-rk.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 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 , Michael Rolnik , Aleksandar Markovic Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Michael Rolnik Start implementation of instructions by adding register definitions. Signed-off-by: Michael Rolnik Signed-off-by: Richard Henderson Signed-off-by: Aleksandar Markovic Tested-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Aleksandar Markovic --- target/avr/translate.c | 143 +++++++++++++++++++++++++++++++++++++++++++++= ++++ MAINTAINERS | 1 + 2 files changed, 144 insertions(+) create mode 100644 target/avr/translate.c diff --git a/target/avr/translate.c b/target/avr/translate.c new file mode 100644 index 0000000..44ee884 --- /dev/null +++ b/target/avr/translate.c @@ -0,0 +1,143 @@ +/* + * QEMU AVR CPU + * + * Copyright (c) 2019 Michael Rolnik + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * + */ + +#include "qemu/osdep.h" +#include "qemu/qemu-print.h" +#include "tcg/tcg.h" +#include "cpu.h" +#include "exec/exec-all.h" +#include "tcg/tcg-op.h" +#include "exec/cpu_ldst.h" +#include "exec/helper-proto.h" +#include "exec/helper-gen.h" +#include "exec/log.h" +#include "exec/translator.h" +#include "exec/gen-icount.h" + +/* + * Define if you want a BREAK instruction translated to a breakpoint + * Active debugging connection is assumed + * This is for + * https://github.com/seharris/qemu-avr-tests/tree/master/instruction-tes= ts + * tests + */ +#undef BREAKPOINT_ON_BREAK + +static TCGv cpu_pc; + +static TCGv cpu_Cf; +static TCGv cpu_Zf; +static TCGv cpu_Nf; +static TCGv cpu_Vf; +static TCGv cpu_Sf; +static TCGv cpu_Hf; +static TCGv cpu_Tf; +static TCGv cpu_If; + +static TCGv cpu_rampD; +static TCGv cpu_rampX; +static TCGv cpu_rampY; +static TCGv cpu_rampZ; + +static TCGv cpu_r[NUMBER_OF_CPU_REGISTERS]; +static TCGv cpu_eind; +static TCGv cpu_sp; + +static TCGv cpu_skip; + +static const char reg_names[NUMBER_OF_CPU_REGISTERS][8] =3D { + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", +}; +#define REG(x) (cpu_r[x]) + +enum { + DISAS_EXIT =3D DISAS_TARGET_0, /* We want return to the cpu main lo= op. */ + DISAS_LOOKUP =3D DISAS_TARGET_1, /* We have a variable condition exit= . */ + DISAS_CHAIN =3D DISAS_TARGET_2, /* We have a single condition exit. = */ +}; + +typedef struct DisasContext DisasContext; + +/* This is the state at translation time. */ +struct DisasContext { + TranslationBlock *tb; + + CPUAVRState *env; + CPUState *cs; + + target_long npc; + uint32_t opcode; + + /* Routine used to access memory */ + int memidx; + int bstate; + int singlestep; + + /* + * some AVR instructions can make the following instruction to be skip= ped + * Let's name those instructions + * A - instruction that can skip the next one + * B - instruction that can be skipped. this depends on executio= n of A + * there are two scenarios + * 1. A and B belong to the same translation block + * 2. A is the last instruction in the translation block and B is the = last + * + * following variables are used to simplify the skipping logic, they a= re + * used in the following manner (sketch) + * + * TCGLabel *skip_label =3D NULL; + * if (ctx.skip_cond !=3D TCG_COND_NEVER) { + * skip_label =3D gen_new_label(); + * tcg_gen_brcond_tl(skip_cond, skip_var0, skip_var1, skip_label); + * } + * + * if (free_skip_var0) { + * tcg_temp_free(skip_var0); + * free_skip_var0 =3D false; + * } + * + * translate(&ctx); + * + * if (skip_label) { + * gen_set_label(skip_label); + * } + */ + TCGv skip_var0; + TCGv skip_var1; + TCGCond skip_cond; + bool free_skip_var0; +}; + + +static bool avr_have_feature(DisasContext *ctx, int feature) +{ + if (!avr_feature(ctx->env, feature)) { + gen_helper_unsupported(cpu_env); + ctx->bstate =3D DISAS_NORETURN; + return false; + } + return true; +} + +static bool decode_insn(DisasContext *ctx, uint16_t insn); +#include "decode_insn.inc.c" diff --git a/MAINTAINERS b/MAINTAINERS index 3d83ed0..105e873 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -176,6 +176,7 @@ F: target/avr/helper.h F: target/avr/helper.c F: target/avr/gdbstub.c F: target/avr/machine.c +F: target/avr/translate.c =20 CRIS TCG CPUs M: Edgar E. Iglesias --=20 2.7.4