From patchwork Tue Nov 21 14:10:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikhail Abakumov X-Patchwork-Id: 840037 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yh75W0D0gz9s7B for ; Wed, 22 Nov 2017 01:19:54 +1100 (AEDT) Received: from localhost ([::1]:34670 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eH9Ot-0001he-Qw for incoming@patchwork.ozlabs.org; Tue, 21 Nov 2017 09:19:47 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40147) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eH9Fh-00027r-MX for qemu-devel@nongnu.org; Tue, 21 Nov 2017 09:10:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eH9Fd-000371-OE for qemu-devel@nongnu.org; Tue, 21 Nov 2017 09:10:17 -0500 Received: from mail.ispras.ru ([83.149.199.45]:38426) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eH9Fd-00036N-Gh for qemu-devel@nongnu.org; Tue, 21 Nov 2017 09:10:13 -0500 Received: from Misha-PC.lan02.inno (unknown [85.142.117.226]) by mail.ispras.ru (Postfix) with ESMTPSA id C939454006E; Tue, 21 Nov 2017 17:10:12 +0300 (MSK) From: Mihail Abakumov To: qemu-devel@nongnu.org Date: Tue, 21 Nov 2017 17:10:10 +0300 Message-ID: <151127341057.6888.4836291640056893717.stgit@Misha-PC.lan02.inno> In-Reply-To: <151127322955.6888.16198535123422076171.stgit@Misha-PC.lan02.inno> References: <151127322955.6888.16198535123422076171.stgit@Misha-PC.lan02.inno> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 83.149.199.45 Subject: [Qemu-devel] [PATCH v3 31/45] windbg: implemented windbg_set_dr X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sw@weilnetz.de, lprosek@redhat.com, dovgaluk@ispras.ru, rkagan@virtuozzo.com, pbonzini@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Defined useful macros for breakpoints. Signed-off-by: Mihail Abakumov Signed-off-by: Pavel Dovgalyuk Signed-off-by: Dmitriy Koltunov --- target/i386/windbgstub.c | 50 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 49 insertions(+), 1 deletion(-) diff --git a/target/i386/windbgstub.c b/target/i386/windbgstub.c index c59d1401ad..14ad195107 100755 --- a/target/i386/windbgstub.c +++ b/target/i386/windbgstub.c @@ -14,6 +14,21 @@ #ifndef TARGET_X86_64 #include "exec/windbgstub-utils.h" +#define IS_LOCAL_BP_ENABLED(dr7, index) (((dr7) >> ((index) * 2)) & 1) + +#define IS_GLOBAL_BP_ENABLED(dr7, index) (((dr7) >> ((index) * 2)) & 2) + +#define IS_BP_ENABLED(dr7, index) \ + (IS_LOCAL_BP_ENABLED(dr7, index) | IS_GLOBAL_BP_ENABLED(dr7, index)) + +#define BP_TYPE(dr7, index) \ + ((int) ((dr7) >> (DR7_TYPE_SHIFT + ((index) * 4))) & 3) + +#define BP_LEN(dr7, index) ({ \ + int _len = (((dr7) >> (DR7_LEN_SHIFT + ((index) * 4))) & 3); \ + (_len == 2) ? 8 : _len + 1; \ +}) + #ifdef TARGET_X86_64 # define OFFSET_SELF_PCR 0x18 # define OFFSET_VERS 0x108 @@ -273,9 +288,42 @@ typedef struct _CPU_KPROCESSOR_STATE { CPU_KSPECIAL_REGISTERS SpecialRegisters; } CPU_KPROCESSOR_STATE, *PCPU_KPROCESSOR_STATE; -static void windbg_set_dr(CPUState *cpu, int index, target_ulong value) +static int windbg_hw_breakpoint_insert(CPUState *cpu, int index) +{ + return 0; +} + +static int windbg_hw_breakpoint_remove(CPUState *cpu, int index) +{ + return 0; +} + +static void windbg_set_dr7(CPUState *cpu, target_ulong new_dr7) {} +static void windbg_set_dr(CPUState *cpu, int index, target_ulong value) +{ + CPUArchState *env = cpu->env_ptr; + + switch (index) { + case 0 ... 3: + if (IS_BP_ENABLED(env->dr[7], index) && env->dr[index] != value) { + windbg_hw_breakpoint_remove(cpu, index); + env->dr[index] = value; + windbg_hw_breakpoint_insert(cpu, index); + } else { + env->dr[index] = value; + } + return; + case 6: + env->dr[6] = value | DR6_FIXED_1; + return; + case 7: + windbg_set_dr7(cpu, value); + return; + } +} + static void windbg_set_sr(CPUState *cpu, int sr, uint16_t selector) { CPUArchState *env = cpu->env_ptr;