From patchwork Fri May 29 07:21:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 11577865 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9EFF060D for ; Fri, 29 May 2020 07:26:16 +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 7ED5F207BC for ; Fri, 29 May 2020 07:26:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ED5F207BC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mail.uni-paderborn.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:33992 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jeZPD-0001Ek-LD for patchwork-qemu-devel@patchwork.kernel.org; Fri, 29 May 2020 03:26:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44484) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jeZLL-0002ew-8x for qemu-devel@nongnu.org; Fri, 29 May 2020 03:22:15 -0400 Received: from hoth.uni-paderborn.de ([2001:638:502:c003::19]:38044) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jeZLI-0000gT-Em for qemu-devel@nongnu.org; Fri, 29 May 2020 03:22:14 -0400 Received: from magmaria.uni-paderborn.de ([131.234.189.24] helo=localhost.localdomain) by mail.uni-paderborn.de with esmtp (Exim 4.93 hoth) id 1jeZLG-0007uS-RB for qemu-devel@nongnu.org; Fri, 29 May 2020 09:22:10 +0200 Received: from mail.uni-paderborn.de by magmaria with queue id 3990296-3 for qemu-devel@nongnu.org; Fri, 29 May 2020 07:22:09 GMT X-Envelope-From: From: Bastian Koppelmann To: qemu-devel@nongnu.org Subject: [PATCH v2 5/5] target/tricore: Implement gdbstub Date: Fri, 29 May 2020 09:21:48 +0200 Message-Id: <20200529072148.284037-6-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200529072148.284037-1-kbastian@mail.uni-paderborn.de> References: <20200529072148.284037-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 X-PMX-Version: 6.4.9.2830568, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2020.5.29.71219, AntiVirus-Engine: 5.74.0, AntiVirus-Data: 2020.5.29.5740000 X-Sophos-SenderHistory: ip=2a02:908:2214:e5bc::95d, fs=6374313, da=78345994, mc=156, sc=3, hc=153, sp=1, fso=6374313, re=0, sd=0, hd=0 X-IMT-Spam-Score: 0.0 () X-IMT-Authenticated-Sender: Received-SPF: pass client-ip=2001:638:502:c003::19; envelope-from=kbastian@mail.uni-paderborn.de; helo=hoth.uni-paderborn.de X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=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: , Cc: kbastian@mail.uni-paderborn.de Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Bastian Koppelmann Acked-by: Alex Bennée --- v1 -> v2: - tricore_cpu_gdb_read_registers uses a GByteArray pointer for the mem_buf argument target/tricore/Makefile.objs | 2 +- target/tricore/cpu.c | 10 +++ target/tricore/cpu.h | 2 + target/tricore/gdbstub.c | 139 +++++++++++++++++++++++++++++++++++ 4 files changed, 152 insertions(+), 1 deletion(-) create mode 100644 target/tricore/gdbstub.c diff --git a/target/tricore/Makefile.objs b/target/tricore/Makefile.objs index 7a05670718..281b55f08d 100644 --- a/target/tricore/Makefile.objs +++ b/target/tricore/Makefile.objs @@ -1 +1 @@ -obj-y += translate.o helper.o cpu.o op_helper.o fpu_helper.o +obj-y += translate.o helper.o cpu.o op_helper.o fpu_helper.o gdbstub.o diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c index c8c1e9e7d5..2f2e5b029f 100644 --- a/target/tricore/cpu.c +++ b/target/tricore/cpu.c @@ -28,6 +28,11 @@ static inline void set_feature(CPUTriCoreState *env, int feature) env->features |= 1ULL << feature; } +static gchar *tricore_gdb_arch_name(CPUState *cs) +{ + return g_strdup("tricore"); +} + static void tricore_cpu_set_pc(CPUState *cs, vaddr value) { TriCoreCPU *cpu = TRICORE_CPU(cs); @@ -150,6 +155,11 @@ static void tricore_cpu_class_init(ObjectClass *c, void *data) cc->class_by_name = tricore_cpu_class_by_name; cc->has_work = tricore_cpu_has_work; + cc->gdb_read_register = tricore_cpu_gdb_read_register; + cc->gdb_write_register = tricore_cpu_gdb_write_register; + cc->gdb_num_core_regs = 44; + cc->gdb_arch_name = tricore_gdb_arch_name; + cc->dump_state = tricore_cpu_dump_state; cc->set_pc = tricore_cpu_set_pc; cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb; diff --git a/target/tricore/cpu.h b/target/tricore/cpu.h index 8c014fad07..b82349d1b1 100644 --- a/target/tricore/cpu.h +++ b/target/tricore/cpu.h @@ -353,6 +353,8 @@ enum { uint32_t psw_read(CPUTriCoreState *env); void psw_write(CPUTriCoreState *env, uint32_t val); +int tricore_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n); +int tricore_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n); void fpu_set_state(CPUTriCoreState *env); diff --git a/target/tricore/gdbstub.c b/target/tricore/gdbstub.c new file mode 100644 index 0000000000..0f4e612a04 --- /dev/null +++ b/target/tricore/gdbstub.c @@ -0,0 +1,139 @@ +/* + * TriCore gdb server stub + * + * Copyright (c) 2019 Bastian Koppelmann, Paderborn University + * + * 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 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-common.h" +#include "exec/gdbstub.h" + + +#define LCX_REGNUM 32 +#define FCX_REGNUM 33 +#define PCXI_REGNUM 34 +#define TRICORE_PSW_REGNUM 35 +#define TRICORE_PC_REGNUM 36 +#define ICR_REGNUM 37 +#define ISP_REGNUM 38 +#define BTV_REGNUM 39 +#define BIV_REGNUM 40 +#define SYSCON_REGNUM 41 +#define PMUCON0_REGNUM 42 +#define DMUCON_REGNUM 43 + +static uint32_t tricore_cpu_gdb_read_csfr(CPUTriCoreState *env, int n) +{ + switch (n) { + case LCX_REGNUM: + return env->LCX; + case FCX_REGNUM: + return env->FCX; + case PCXI_REGNUM: + return env->PCXI; + case TRICORE_PSW_REGNUM: + return psw_read(env); + case TRICORE_PC_REGNUM: + return env->PC; + case ICR_REGNUM: + return env->ICR; + case ISP_REGNUM: + return env->ISP; + case BTV_REGNUM: + return env->BTV; + case BIV_REGNUM: + return env->BIV; + case SYSCON_REGNUM: + return env->SYSCON; + case PMUCON0_REGNUM: + return 0; /* PMUCON0 */ + case DMUCON_REGNUM: + return 0; /* DMUCON0 */ + default: + return 0; + } +} + +static void tricore_cpu_gdb_write_csfr(CPUTriCoreState *env, int n, + uint32_t val) +{ + switch (n) { + case LCX_REGNUM: + env->LCX = val; + break; + case FCX_REGNUM: + env->FCX = val; + break; + case PCXI_REGNUM: + env->PCXI = val; + break; + case TRICORE_PSW_REGNUM: + psw_write(env, val); + break; + case TRICORE_PC_REGNUM: + env->PC = val; + break; + case ICR_REGNUM: + env->ICR = val; + break; + case ISP_REGNUM: + env->ISP = val; + break; + case BTV_REGNUM: + env->BTV = val; + break; + case BIV_REGNUM: + env->BIV = val; + break; + case SYSCON_REGNUM: + env->SYSCON = val; + break; + } +} + + +int tricore_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) +{ + TriCoreCPU *cpu = TRICORE_CPU(cs); + CPUTriCoreState *env = &cpu->env; + + if (n < 16) { /* data registers */ + return gdb_get_reg32(mem_buf, env->gpr_d[n]); + } else if (n < 32) { /* address registers */ + return gdb_get_reg32(mem_buf, env->gpr_a[n - 16]); + } else { /* csfr */ + return gdb_get_reg32(mem_buf, tricore_cpu_gdb_read_csfr(env, n)); + } + return 0; +} + +int tricore_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + TriCoreCPU *cpu = TRICORE_CPU(cs); + CPUTriCoreState *env = &cpu->env; + uint32_t tmp; + + tmp = ldl_p(mem_buf); + + if (n < 16) { /* data registers */ + env->gpr_d[n] = tmp; + } else if (n < 32) { /* address registers */ + env->gpr_d[n - 16] = tmp; + } else { + tricore_cpu_gdb_write_csfr(env, n, tmp); + } + return 4; +}