From patchwork Mon Sep 28 17:28:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taylor Simpson X-Patchwork-Id: 272569 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFF46C2D0A8 for ; Mon, 28 Sep 2020 17:35:35 +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 6BF612083B for ; Mon, 28 Sep 2020 17:35:35 +0000 (UTC) Authentication-Results: mail.kernel.org; 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envelope-from=tsimpson@qualcomm.com; helo=alexa-out-sd-01.qualcomm.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/28 13:29:03 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.199, RCVD_IN_DNSWL_MED=-2.3, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ale@rev.ng, riku.voipio@iki.fi, richard.henderson@linaro.org, laurent@vivier.eu, tsimpson@quicinc.com, philmd@redhat.com, aleksandar.m.mail@gmail.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" GDB register read and write routines Signed-off-by: Taylor Simpson Reviewed-by: Richard Henderson --- target/hexagon/internal.h | 3 +++ target/hexagon/cpu.c | 2 ++ target/hexagon/gdbstub.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 52 insertions(+) create mode 100644 target/hexagon/gdbstub.c diff --git a/target/hexagon/internal.h b/target/hexagon/internal.h index 327bad9..961318a 100644 --- a/target/hexagon/internal.h +++ b/target/hexagon/internal.h @@ -29,6 +29,9 @@ } \ } while (0) +extern int hexagon_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); +extern int hexagon_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); + extern void hexagon_debug(CPUHexagonState *env); extern const char * const hexagon_regnames[TOTAL_PER_THREAD_REGS]; diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c index 5e0da3f..32aa982 100644 --- a/target/hexagon/cpu.c +++ b/target/hexagon/cpu.c @@ -280,6 +280,8 @@ static void hexagon_cpu_class_init(ObjectClass *c, void *data) cc->dump_state = hexagon_dump_state; cc->set_pc = hexagon_cpu_set_pc; cc->synchronize_from_tb = hexagon_cpu_synchronize_from_tb; + cc->gdb_read_register = hexagon_gdb_read_register; + cc->gdb_write_register = hexagon_gdb_write_register; cc->gdb_num_core_regs = TOTAL_PER_THREAD_REGS; cc->gdb_stop_before_watchpoint = true; cc->disas_set_info = hexagon_cpu_disas_set_info; diff --git a/target/hexagon/gdbstub.c b/target/hexagon/gdbstub.c new file mode 100644 index 0000000..e8c10b2 --- /dev/null +++ b/target/hexagon/gdbstub.c @@ -0,0 +1,47 @@ +/* + * Copyright(c) 2019-2020 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "exec/gdbstub.h" +#include "cpu.h" +#include "internal.h" + +int hexagon_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) +{ + HexagonCPU *cpu = HEXAGON_CPU(cs); + CPUHexagonState *env = &cpu->env; + + if (n < TOTAL_PER_THREAD_REGS) { + return gdb_get_regl(mem_buf, env->gpr[n]); + } + + g_assert_not_reached(); +} + +int hexagon_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + HexagonCPU *cpu = HEXAGON_CPU(cs); + CPUHexagonState *env = &cpu->env; + + if (n < TOTAL_PER_THREAD_REGS) { + env->gpr[n] = ldtul_p(mem_buf); + return sizeof(target_ulong); + } + + g_assert_not_reached(); +}