From patchwork Tue Mar 17 15:50:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 11443241 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D2EF314DD for ; Tue, 17 Mar 2020 15:55:29 +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 B028020663 for ; Tue, 17 Mar 2020 15:55:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B028020663 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=vivier.eu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:35334 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jEEYy-00040z-N6 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 17 Mar 2020 11:55:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36865) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jEEVC-0004d6-OH for qemu-devel@nongnu.org; Tue, 17 Mar 2020 11:51:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jEEVB-00072G-AI for qemu-devel@nongnu.org; Tue, 17 Mar 2020 11:51:34 -0400 Received: from mout.kundenserver.de ([212.227.17.10]:42227) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jEEVB-0006x1-0y for qemu-devel@nongnu.org; Tue, 17 Mar 2020 11:51:33 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue109 [212.227.15.183]) with ESMTPSA (Nemesis) id 1N3sZy-1jMn5Y1qXQ-00zkvc; Tue, 17 Mar 2020 16:51:24 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL v2 02/37] linux-user/i386: Split out gen_signal Date: Tue, 17 Mar 2020 16:50:41 +0100 Message-Id: <20200317155116.1227513-3-laurent@vivier.eu> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200317155116.1227513-1-laurent@vivier.eu> References: <20200317155116.1227513-1-laurent@vivier.eu> MIME-Version: 1.0 X-Provags-ID: V03:K1:yl9iV5z5k4ilKegLV/oxiSfHKw4x+y1m3eUvIFi6YySUnmMJlzq 6EK+P0XKhoDu95lX0GqdLWYuGkALFDHbtGxyZ47dsNy5GdGK9v3FrWm5hoZy7475Uibg1RD gqTlFIhB/6HSSaYPbB8eAYHo3S5FNlAMVBkbfHMCqa3xbazE9LRqgP8tgg42+qQfrr9nSUj +y3hymR5CE++DJ8gnSkXg== X-UI-Out-Filterresults: notjunk:1;V03:K0:GB7Mwgs9lI4=:Z1OElvx9QlWZUBspJ8YXeP CZ0RxQyiJLWAANPJgVStjVNjsYCurIkiCbNLssdFBNlFVVHSFTJuqj3j/Qg5XqNL+vXk2a9cm XOLZNaztAGtxQmzwE6Ca1cIFcK+sP04puFZkLSDVetrlqgfDFY5Bq5Gpz1G0IXX6k603DYGJS hl9DMX/7JeeyvjLsanADkdVP4Ge271UgK60mw18JvZaLUqQTVZi4jKBifIKuwWPzygioPMlG0 MgqVvMdWAiSSdwzBjPmU+zg/M84rEAQyuit9xWHDe1oJJhc1OC3BnZ/pFh43btIyAKmuIZs7B hoSKV5vGarRIVc0yaIxKSK18kRSn0oSNPF5wSTHC2KlSCbEN5qXtwHJlBuULRWOOEHLt2z2pW Wa8J/1egTGaTMd8DS54wxPFL4OX1YSjVJfpZPGNXRMi2pXlNzpwiOe8puean0NCyVwerLtDNs cy9ObWPTUZOTe8KgbMp8pq9FTOZi/67dKHw/bo2LxV8Z5YJaadSda6XGYnMsh47CCHoTW2SNQ SiH8yGRb8kXVitOL7kE7amncT2CGFftBnuKttGWyZTP0/Z2P74Wz60Hd0BcNSzVWGkKQ1R9dd RSKbih+HaO0Q2DaKQl/MU4A9BRMLNj1yBC0L3C2BtVJTs5pMtXBJ9DM3L0dZlQyYXNkvWEwoc 4+0rAhov888IcZzUw41HtimXVRj7ttJTqiJR5EpdWOlK/AptmLKccQHSQpqi+qMnPBfgG/pHm rvdsmP/0INRDpy4r20xVgnwokSg+CxQPhBuY3yoKoxF847Tt/r8LzMQ/QhUGd4GgINF1VV2mJ K1jPNXbjFQ6MhUySMpFGZsE6VE7P8yvErNGCHvqbCJOLnD7IKD+SeigXcHyuUciIhvUBdsH X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.10 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: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Riku Voipio , Richard Henderson , Laurent Vivier , Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson This is a bit tidier than open-coding the 5 lines necessary to initialize the target_siginfo_t. In addition, this zeros the remaining bytes of the target_siginfo_t, rather than passing in garbage. Reviewed-by: Paolo Bonzini Reviewed-by: Alex Bennée Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson Message-Id: <20200213032223.14643-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/i386/cpu_loop.c | 93 ++++++++++++++------------------------ 1 file changed, 33 insertions(+), 60 deletions(-) diff --git a/linux-user/i386/cpu_loop.c b/linux-user/i386/cpu_loop.c index 024b6f4d588c..e217cca5ee1e 100644 --- a/linux-user/i386/cpu_loop.c +++ b/linux-user/i386/cpu_loop.c @@ -81,13 +81,23 @@ static void set_idt(int n, unsigned int dpl) } #endif +static void gen_signal(CPUX86State *env, int sig, int code, abi_ptr addr) +{ + target_siginfo_t info = { + .si_signo = sig, + .si_code = code, + ._sifields._sigfault._addr = addr + }; + + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); +} + void cpu_loop(CPUX86State *env) { CPUState *cs = env_cpu(env); int trapnr; abi_ulong pc; abi_ulong ret; - target_siginfo_t info; for(;;) { cpu_exec_start(cs); @@ -134,70 +144,45 @@ void cpu_loop(CPUX86State *env) #endif case EXCP0B_NOSEG: case EXCP0C_STACK: - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + gen_signal(env, TARGET_SIGBUS, TARGET_SI_KERNEL, 0); break; case EXCP0D_GPF: /* XXX: potential problem if ABI32 */ #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_fault(env); - } else -#endif - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; } +#endif + gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0); break; case EXCP0E_PAGE: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - if (!(env->error_code & 1)) - info.si_code = TARGET_SEGV_MAPERR; - else - info.si_code = TARGET_SEGV_ACCERR; - info._sifields._sigfault._addr = env->cr[2]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + gen_signal(env, TARGET_SIGSEGV, + (env->error_code & 1 ? + TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR), + env->cr[2]); break; case EXCP00_DIVZ: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); - } else -#endif - { - /* division by zero */ - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTDIV; - info._sifields._sigfault._addr = env->eip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; } +#endif + gen_signal(env, TARGET_SIGFPE, TARGET_FPE_INTDIV, env->eip); break; case EXCP01_DB: case EXCP03_INT3: #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); - } else + break; + } #endif - { - info.si_signo = TARGET_SIGTRAP; - info.si_errno = 0; - if (trapnr == EXCP01_DB) { - info.si_code = TARGET_TRAP_BRKPT; - info._sifields._sigfault._addr = env->eip; - } else { - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - } - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + if (trapnr == EXCP01_DB) { + gen_signal(env, TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->eip); + } else { + gen_signal(env, TARGET_SIGTRAP, TARGET_SI_KERNEL, 0); } break; case EXCP04_INTO: @@ -205,31 +190,19 @@ void cpu_loop(CPUX86State *env) #ifndef TARGET_X86_64 if (env->eflags & VM_MASK) { handle_vm86_trap(env, trapnr); - } else -#endif - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; } +#endif + gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0); break; case EXCP06_ILLOP: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->eip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + gen_signal(env, TARGET_SIGILL, TARGET_ILL_ILLOPN, env->eip); break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case EXCP_DEBUG: - info.si_signo = TARGET_SIGTRAP; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + gen_signal(env, TARGET_SIGTRAP, TARGET_TRAP_BRKPT, 0); break; case EXCP_ATOMIC: cpu_exec_step_atomic(cs);