From patchwork Mon Jul 5 23:34:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taylor Simpson X-Patchwork-Id: 12359637 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 E7160C07E9B for ; Mon, 5 Jul 2021 23:41:43 +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 7AFE86194B for ; Mon, 5 Jul 2021 23:41:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7AFE86194B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=quicinc.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46036 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0YDe-0000gV-Lb for qemu-devel@archiver.kernel.org; Mon, 05 Jul 2021 19:41:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35442) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0Y6z-0003JJ-8z for qemu-devel@nongnu.org; Mon, 05 Jul 2021 19:34:49 -0400 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:45004) by eggs.gnu.org with esmtps (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1m0Y6x-0004dS-Bq for qemu-devel@nongnu.org; Mon, 05 Jul 2021 19:34:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1625528087; x=1657064087; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ww0v8/mnuM0II0gRz0G2O2CLED4Rk9WXpau7rNJV0RU=; b=D61LADYwsiy2mJ8lr/F1w7eSM4qUz+qkBycAtCrcRLT0ivF6XWaXTTAk aZuBoIpXLKHye3d5coVkSL6XTHg4ll3zPuYpBkMLT1bghktd5Xhy2I7Rf U+dM8VN5UEEwJePYZKxybHT5qFQfJlnGYZ+WW0KV1qr34Q9M5O7hDpfQY A=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 05 Jul 2021 16:34:39 -0700 X-QCInternal: smtphost Received: from vu-tsimpson-aus.qualcomm.com (HELO vu-tsimpson1-aus.qualcomm.com) ([10.222.150.1]) by ironmsg-SD-alpha.qualcomm.com with ESMTP; 05 Jul 2021 16:34:38 -0700 Received: by vu-tsimpson1-aus.qualcomm.com (Postfix, from userid 47164) id D935FCFC; Mon, 5 Jul 2021 18:34:37 -0500 (CDT) From: Taylor Simpson To: qemu-devel@nongnu.org Subject: [PATCH 04/20] Hexagon HVX (target/hexagon) support in gdbstub Date: Mon, 5 Jul 2021 18:34:18 -0500 Message-Id: <1625528074-19440-5-git-send-email-tsimpson@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625528074-19440-1-git-send-email-tsimpson@quicinc.com> References: <1625528074-19440-1-git-send-email-tsimpson@quicinc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=199.106.114.39; envelope-from=tsimpson@qualcomm.com; helo=alexa-out-sd-02.qualcomm.com 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=0.249, 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, peter.maydell@linaro.org, bcain@quicinc.com, richard.henderson@linaro.org, tsimpson@quicinc.com, philmd@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Taylor Simpson --- target/hexagon/gdbstub.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/target/hexagon/gdbstub.c b/target/hexagon/gdbstub.c index 9c8c04c..b804e97 100644 --- a/target/hexagon/gdbstub.c +++ b/target/hexagon/gdbstub.c @@ -21,6 +21,30 @@ #include "cpu.h" #include "internal.h" +static int gdb_get_vreg(CPUHexagonState *env, GByteArray *mem_buf, int n) +{ + int total = 0; + int i; + for (i = 0; i < MAX_VEC_SIZE_BYTES / sizeof(uint32_t); i++) { + total += gdb_get_regl(mem_buf, env->VRegs[n].uw[i]); + mem_buf += sizeof(uint32_t); + } + return total; +} + +static int gdb_get_qreg(CPUHexagonState *env, GByteArray *mem_buf, int n) +{ + int total = 0; + int i; + for (i = 0; + i < MAX_VEC_SIZE_BYTES / sizeof(uint32_t) / BITS_PER_BYTE; + i++) { + total += gdb_get_regl(mem_buf, env->QRegs[n].uw[i]); + mem_buf += sizeof(uint32_t); + } + return total; +} + int hexagon_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) { HexagonCPU *cpu = HEXAGON_CPU(cs); @@ -29,10 +53,42 @@ int hexagon_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) if (n < TOTAL_PER_THREAD_REGS) { return gdb_get_regl(mem_buf, env->gpr[n]); } + n -= TOTAL_PER_THREAD_REGS; + + if (n < NUM_VREGS) { + return gdb_get_vreg(env, mem_buf, n); + } + n -= NUM_VREGS; + + if (n < NUM_QREGS) { + return gdb_get_qreg(env, mem_buf, n); + } g_assert_not_reached(); } +static int gdb_put_vreg(CPUHexagonState *env, uint8_t *mem_buf, int n) +{ + int i; + for (i = 0; i < MAX_VEC_SIZE_BYTES / sizeof(uint32_t); i++) { + env->VRegs[n].uw[i] = ldtul_p(mem_buf); + mem_buf += sizeof(uint32_t); + } + return MAX_VEC_SIZE_BYTES; +} + +static int gdb_put_qreg(CPUHexagonState *env, uint8_t *mem_buf, int n) +{ + int i; + for (i = 0; + i < MAX_VEC_SIZE_BYTES / sizeof(uint32_t) / BITS_PER_BYTE; + i++) { + env->QRegs[n].uw[i] = ldtul_p(mem_buf); + mem_buf += sizeof(uint32_t); + } + return MAX_VEC_SIZE_BYTES / BITS_PER_BYTE; +} + int hexagon_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) { HexagonCPU *cpu = HEXAGON_CPU(cs); @@ -42,6 +98,16 @@ int hexagon_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) env->gpr[n] = ldtul_p(mem_buf); return sizeof(target_ulong); } + n -= TOTAL_PER_THREAD_REGS; + + if (n < NUM_VREGS) { + return gdb_put_vreg(env, mem_buf, n); + } + n -= NUM_VREGS; + + if (n < NUM_QREGS) { + return gdb_put_qreg(env, mem_buf, n); + } g_assert_not_reached(); }