From patchwork Tue Oct 10 03:37:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13414793 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 67875CD68E4 for ; Tue, 10 Oct 2023 03:38:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qq3Yd-0006CE-W4; Mon, 09 Oct 2023 23:37:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qq3YZ-00069I-Lt for qemu-devel@nongnu.org; Mon, 09 Oct 2023 23:37:15 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qq3YV-0005uD-SK for qemu-devel@nongnu.org; Mon, 09 Oct 2023 23:37:15 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxlPDgxiRlyIUwAA--.28025S3; Tue, 10 Oct 2023 11:37:04 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxP93cxiRl4NgdAA--.64991S8; Tue, 10 Oct 2023 11:37:04 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, philmd@redhat.com, laurent@vivier.e, maobibo@loongson.cn, yangxiaojuan@loongson.cn, laurent@vivier.eu Subject: [PATCH v1 6/6] linux-user/loongarch64: Add LASX sigcontext save/restore Date: Tue, 10 Oct 2023 11:37:01 +0800 Message-Id: <20231010033701.385725-7-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20231010033701.385725-1-gaosong@loongson.cn> References: <20231010033701.385725-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxP93cxiRl4NgdAA--.64991S8 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn 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_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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Signed-off-by: Song Gao --- linux-user/loongarch64/signal.c | 67 ++++++++++++++++++++++++++++++--- 1 file changed, 62 insertions(+), 5 deletions(-) diff --git a/linux-user/loongarch64/signal.c b/linux-user/loongarch64/signal.c index 4b09e50a5f..e5b7688a2e 100644 --- a/linux-user/loongarch64/signal.c +++ b/linux-user/loongarch64/signal.c @@ -41,6 +41,14 @@ struct target_lsx_context { uint32_t fcsr; } QEMU_ALIGNED(LSX_CTX_ALIGN); +#define LASX_CTX_MAGIC 0x41535801 +#define LASX_CTX_ALIGN 32 +struct target_lasx_context { + uint64_t regs[4 * 32]; + uint64_t fcc; + uint32_t fcsr; +} QEMU_ALIGNED(LASX_CTX_ALIGN); + #define CONTEXT_INFO_ALIGN 16 struct target_sctx_info { uint32_t magic; @@ -78,6 +86,7 @@ struct extctx_layout { unsigned int flags; struct ctx_layout fpu; struct ctx_layout lsx; + struct ctx_layout lasx; struct ctx_layout end; }; @@ -110,7 +119,10 @@ static abi_ptr setup_extcontext(CPULoongArchState *env, /* For qemu, there is no lazy fp context switch, so fp always present. */ extctx->flags = SC_USED_FP; - if (env->extctx_flags & EXTCTX_FLAGS_LSX) { + if (env->extctx_flags & EXTCTX_FLAGS_LASX) { + sp = extframe_alloc(extctx, &extctx->lasx, + sizeof(struct target_lasx_context), LASX_CTX_ALIGN, sp); + } else if (env->extctx_flags & EXTCTX_FLAGS_LSX) { sp = extframe_alloc(extctx, &extctx->lsx, sizeof(struct target_lsx_context), LSX_CTX_ALIGN, sp); @@ -140,7 +152,24 @@ static void setup_sigframe(CPULoongArchState *env, * Set extension context */ - if (env->extctx_flags & EXTCTX_FLAGS_LSX) { + if (env->extctx_flags & EXTCTX_FLAGS_LASX) { + struct target_lasx_context *lasx_ctx; + info = extctx->lasx.haddr; + + __put_user(LASX_CTX_MAGIC, &info->magic); + __put_user(extctx->lasx.size, &info->size); + + lasx_ctx = (struct target_lasx_context *)(info + 1); + + for (i = 0; i < 32; ++i) { + __put_user(env->fpr[i].vreg.UD(0), &lasx_ctx->regs[4 * i]); + __put_user(env->fpr[i].vreg.UD(1), &lasx_ctx->regs[4 * i + 1]); + __put_user(env->fpr[i].vreg.UD(2), &lasx_ctx->regs[4 * i + 2]); + __put_user(env->fpr[i].vreg.UD(3), &lasx_ctx->regs[4 * i + 3]); + } + __put_user(read_fcc(env), &lasx_ctx->fcc); + __put_user(env->fcsr0, &lasx_ctx->fcsr); + } else if (env->extctx_flags & EXTCTX_FLAGS_LSX) { struct target_lsx_context *lsx_ctx; info = extctx->lsx.haddr; @@ -215,6 +244,15 @@ static bool parse_extcontext(struct extctx_layout *extctx, abi_ptr frame) extctx->lsx.size = size; extctx->size += size; break; + case LASX_CTX_MAGIC: + if (size < (sizeof(struct target_sctx_info) + + sizeof(struct target_lasx_context))) { + return false; + } + extctx->lasx.gaddr = frame; + extctx->lasx.size = size; + extctx->size += size; + break; default: return false; } @@ -235,7 +273,21 @@ static void restore_sigframe(CPULoongArchState *env, __get_user(env->gpr[i], &sc->sc_regs[i]); } - if (extctx->lsx.haddr) { + if (extctx->lasx.haddr) { + struct target_lasx_context *lasx_ctx = + extctx->lasx.haddr + sizeof(struct target_sctx_info); + + for (i = 0; i < 32; ++i) { + __get_user(env->fpr[i].vreg.UD(0), &lasx_ctx->regs[4 * i]); + __get_user(env->fpr[i].vreg.UD(1), &lasx_ctx->regs[4 * i + 1]); + __get_user(env->fpr[i].vreg.UD(2), &lasx_ctx->regs[4 * i + 2]); + __get_user(env->fpr[i].vreg.UD(3), &lasx_ctx->regs[4 * i + 3]); + } + __get_user(fcc, &lasx_ctx->fcc); + write_fcc(env, fcc); + __get_user(env->fcsr0, &lasx_ctx->fcsr); + restore_fp_status(env); + } else if (extctx->lsx.haddr) { struct target_lsx_context *lsx_ctx = extctx->lsx.haddr + sizeof(struct target_sctx_info); @@ -299,7 +351,10 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, return; } - if (env->extctx_flags & EXTCTX_FLAGS_LSX) { + if (env->extctx_flags & EXTCTX_FLAGS_LASX) { + extctx.lasx.haddr = (void *)frame + (extctx.lasx.gaddr - frame_addr); + extctx.end.haddr = (void *)frame + (extctx.end.gaddr - frame_addr); + } else if (env->extctx_flags & EXTCTX_FLAGS_LSX) { extctx.lsx.haddr = (void *)frame + (extctx.lsx.gaddr - frame_addr); extctx.end.haddr = (void *)frame + (extctx.end.gaddr - frame_addr); } else if (env->extctx_flags & EXTCTX_FLAGS_FPU) { @@ -349,7 +404,9 @@ long do_rt_sigreturn(CPULoongArchState *env) goto badframe; } - if (extctx.lsx.gaddr) { + if (extctx.lasx.gaddr) { + extctx.lasx.haddr = (void *)frame + (extctx.lasx.gaddr - frame_addr); + } else if (extctx.lsx.gaddr) { extctx.lsx.haddr = (void *)frame + (extctx.lsx.gaddr - frame_addr); } else if (extctx.fpu.gaddr) { extctx.fpu.haddr = (void *)frame + (extctx.fpu.gaddr - frame_addr);