From nobody Mon Feb 9 23:39:57 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1544015630051495.26613892934154; Wed, 5 Dec 2018 05:13:50 -0800 (PST) Received: from localhost ([::1]:34157 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gUWzs-0007ns-Pm for importer@patchew.org; Wed, 05 Dec 2018 08:13:48 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34243) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gUWgx-0002dY-Sl for qemu-devel@nongnu.org; Wed, 05 Dec 2018 07:54:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gUWgw-0006Yi-Tj for qemu-devel@nongnu.org; Wed, 05 Dec 2018 07:54:15 -0500 Received: from mail.ispras.ru ([83.149.199.45]:50512) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gUWgw-0006YU-G5 for qemu-devel@nongnu.org; Wed, 05 Dec 2018 07:54:14 -0500 Received: from Misha-PC.lan02.inno (unknown [85.142.117.226]) by mail.ispras.ru (Postfix) with ESMTPSA id AF367540082; Wed, 5 Dec 2018 15:54:13 +0300 (MSK) From: Mikhail Abakumov To: qemu-devel@nongnu.org Date: Wed, 05 Dec 2018 15:54:12 +0300 Message-ID: <154401445205.8440.15265963166925713090.stgit@Misha-PC.lan02.inno> In-Reply-To: <154401431697.8440.845616703562380651.stgit@Misha-PC.lan02.inno> References: <154401431697.8440.845616703562380651.stgit@Misha-PC.lan02.inno> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 83.149.199.45 Subject: [Qemu-devel] [PATCH 2 23/39] windbg: add helper functions 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Add helper functions for serialization and deserialization kernel structure= s to byte buffer. Signed-off-by: Mikhail Abakumov Signed-off-by: Pavel Dovgalyuk --- target/i386/windbgstub.c | 123 ++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 123 insertions(+) diff --git a/target/i386/windbgstub.c b/target/i386/windbgstub.c index 5d47d5c9e9..e2ed2b3105 100644 --- a/target/i386/windbgstub.c +++ b/target/i386/windbgstub.c @@ -280,6 +280,129 @@ static InitedAddr kdDebuggerDataBlock; static InitedAddr kdVersion; #endif /* TARGET_I386 */ =20 +__attribute__ ((unused)) /* unused yet */ +static void windbg_set_dr(CPUState *cs, int index, target_ulong value) +{ + X86CPU *cpu =3D X86_CPU(cs); + CPUX86State *env =3D &cpu->env; + + switch (index) { + case 0 ... 3: + env->dr[index] =3D value; + return; + case 6: + env->dr[6] =3D value | DR6_FIXED_1; + return; + case 7: + cpu_x86_update_dr7(env, value); + return; + } +} + +/* copy from gdbstub.c */ +__attribute__ ((unused)) /* unused yet */ +static void windbg_set_sr(CPUState *cs, int sreg, uint16_t selector) +{ + X86CPU *cpu =3D X86_CPU(cs); + CPUX86State *env =3D &cpu->env; + + if (selector !=3D env->segs[sreg].selector) { +#if defined(CONFIG_USER_ONLY) + cpu_x86_load_seg(env, sreg, selector); +#else + unsigned int limit, flags; + target_ulong base; + + if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { + int dpl =3D (env->eflags & VM_MASK) ? 3 : 0; + base =3D selector << 4; + limit =3D 0xffff; + flags =3D DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | + DESC_A_MASK | (dpl << DESC_DPL_SHIFT); + } else { + if (!cpu_x86_get_descr_debug(env, selector, &base, &limit, + &flags)) { + return; + } + } + cpu_x86_load_seg_cache(env, sreg, selector, base, limit, flags); +#endif + } +} + +#define rwuw_p(ptr, var, is_read) = \ + do { = \ + if (is_read) { = \ + var =3D lduw_p(ptr); = \ + } else { = \ + stw_p(ptr, var); = \ + } = \ + } while (0) + +#define rwl_p(ptr, var, is_read) = \ + do { = \ + if (is_read) { = \ + var =3D ldl_p(ptr); = \ + } else { = \ + stl_p(ptr, var); = \ + } = \ + } while (0) + +#define rwtul_p(ptr, var, is_read) = \ + do { = \ + if (is_read) { = \ + var =3D ldtul_p(ptr); = \ + } else { = \ + sttul_p(ptr, var); = \ + } = \ + } while (0) + +#define RW_DR(ptr, cs, dr_index, is_read) = \ + do { = \ + if (is_read) { = \ + windbg_set_dr(cs, dr_index, ldtul_p(ptr)); = \ + } else { = \ + sttul_p(ptr, X86_CPU(cs)->env.dr[dr_index]); = \ + } = \ + } while (0) + +#define RW_SR(ptr, cs, sr_index, is_read) = \ + do { = \ + if (is_read) { = \ + windbg_set_sr(cs, sr_index, lduw_p(ptr)); = \ + } else { = \ + stw_p(ptr, X86_CPU(cs)->env.segs[R_CS].selector); = \ + } = \ + } while (0) + +#define RW_CR(ptr, cs, cr_index, is_read) = \ + do { = \ + if (is_read) { = \ + cpu_x86_update_cr##cr_index(env, (int32_t) ldtul_p(ptr)); = \ + } else { = \ + sttul_p(ptr, (target_ulong) X86_CPU(cs)->env.cr[cr_index]); = \ + } = \ + } while (0) + +#define CASE_FIELD(stct, field, field_size, block) = \ + case offsetof(stct, field): = \ + field_size =3D sizeof_field(stct, field); = \ + block; = \ + break; + +#define CASE_FIELD_X32_64(stct, field_x32, field_x64, field_size, block) \ + CASE_FIELD(stct, TARGET_SAFE(field_x32, field_x64), field_size, block) + +#ifdef TARGET_X86_64 +#define CASE_FIELD_X32(stct, field, field_size, block) +#define CASE_FIELD_X64(stct, field, field_size, block) \ + CASE_FIELD(stct, field, field_size, block) +#else /* TARGET_I386 */ +#define CASE_FIELD_X64(stct, field, field_size, block) +#define CASE_FIELD_X32(stct, field, field_size, block) \ + CASE_FIELD(stct, field, field_size, block) +#endif /* TARGET_I386 */ + static bool find_KPCR(CPUState *cs) { X86CPU *cpu =3D X86_CPU(cs);