From patchwork Mon Nov 8 03:08:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Song Gao X-Patchwork-Id: 12607581 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFA66C433EF for ; Mon, 8 Nov 2021 03:32:13 +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 691CA610F7 for ; Mon, 8 Nov 2021 03:32:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 691CA610F7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from [::1] (port=48884 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mjvOG-0004eg-Ik for qemu-devel@archiver.kernel.org; Sun, 07 Nov 2021 22:32:12 -0500 Received: from eggs.gnu.org ([209.51.188.92]:40044) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mjv2F-0004IR-JK for qemu-devel@nongnu.org; Sun, 07 Nov 2021 22:09:27 -0500 Received: from mail.loongson.cn ([114.242.206.163]:55294 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mjv2D-0003jB-Fe for qemu-devel@nongnu.org; Sun, 07 Nov 2021 22:09:27 -0500 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9CxGdGflIhh9g8BAA--.2390S30; Mon, 08 Nov 2021 11:09:10 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Subject: [RESEND PATCH v9 28/28] linux-user/host/loongarch64: Populate host_signal.h Date: Mon, 8 Nov 2021 11:08:15 +0800 Message-Id: <1636340895-5255-29-git-send-email-gaosong@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1636340895-5255-1-git-send-email-gaosong@loongson.cn> References: <1636340895-5255-1-git-send-email-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf9CxGdGflIhh9g8BAA--.2390S30 X-Coremail-Antispam: 1UD129KBjvJXoWxXrWUGr1xJw17tFWfJFW8WFg_yoW5CF1DpF 43JrW8Grs7Xr9rGrs3Gryktr98GFn3AFWUGFyrKan5uFyjgw1rJrZ5KrWUKF98Wry8uFyS gFW2qr1ruF4jyaUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=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_PASS=-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: , Cc: WANG Xuerui , Xiaojuan Yang Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: WANG Xuerui Split host_signal_pc and host_signal_write out of user-exec.c Signed-off-by: WANG Xuerui Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20210925173032.2434906-30-git@xen0n.name> Signed-off-by: Song Gao Signed-off-by: Xiaojuan Yang --- linux-user/host/loongarch64/host-signal.h | 83 +++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 linux-user/host/loongarch64/host-signal.h diff --git a/linux-user/host/loongarch64/host-signal.h b/linux-user/host/loongarch64/host-signal.h new file mode 100644 index 0000000..7c333b2 --- /dev/null +++ b/linux-user/host/loongarch64/host-signal.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * host-signal.h: signal info dependent on the host architecture + * + * Copyright (c) 2003-2005 Fabrice Bellard + * Copyright (c) 2021 Linaro Limited + */ + +#ifndef LOONGARCH_HOST_SIGNAL_H +#define LOONGARCH_HOST_SIGNAL_H + +static inline uintptr_t host_signal_pc(ucontext_t *uc) +{ + return uc->uc_mcontext.__pc; +} + +static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) +{ + uint32_t insn = *(uint32_t *)host_signal_pc(uc); + bool is_write = false; + + /* Detect store by reading the instruction at the program counter. */ + switch ((insn >> 26) & 0b111111) { + case 0b001000: /* {ll,sc}.[wd] */ + switch ((insn >> 24) & 0b11) { + case 0b01: /* sc.w */ + case 0b11: /* sc.d */ + is_write = true; + break; + } + break; + case 0b001001: /* {ld,st}ox4.[wd] ({ld,st}ptr.[wd]) */ + switch ((insn >> 24) & 0b11) { + case 0b01: /* stox4.w (stptr.w) */ + case 0b11: /* stox4.d (stptr.d) */ + is_write = true; + break; + } + break; + case 0b001010: /* {ld,st}.* family */ + switch ((insn >> 22) & 0b1111) { + case 0b0100: /* st.b */ + case 0b0101: /* st.h */ + case 0b0110: /* st.w */ + case 0b0111: /* st.d */ + case 0b1101: /* fst.s */ + case 0b1111: /* fst.d */ + is_write = true; + break; + } + break; + case 0b001110: /* indexed, atomic, bounds-checking memory operations */ + uint32_t sel = (insn >> 15) & 0b11111111111; + + switch (sel) { + case 0b00000100000: /* stx.b */ + case 0b00000101000: /* stx.h */ + case 0b00000110000: /* stx.w */ + case 0b00000111000: /* stx.d */ + case 0b00001110000: /* fstx.s */ + case 0b00001111000: /* fstx.d */ + case 0b00011101100: /* fstgt.s */ + case 0b00011101101: /* fstgt.d */ + case 0b00011101110: /* fstle.s */ + case 0b00011101111: /* fstle.d */ + case 0b00011111000: /* stgt.b */ + case 0b00011111001: /* stgt.h */ + case 0b00011111010: /* stgt.w */ + case 0b00011111011: /* stgt.d */ + case 0b00011111100: /* stle.b */ + case 0b00011111101: /* stle.h */ + case 0b00011111110: /* stle.w */ + case 0b00011111111: /* stle.d */ + case 0b00011000000 ... 0b00011100011: /* am* insns */ + is_write = true; + break; + } + break; + } + return is_write; +} + +#endif