From patchwork Wed Jun 7 07:46:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 772245 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 3wjLLc5bPlz9sNV for ; Wed, 7 Jun 2017 17:50:00 +1000 (AEST) Received: from localhost ([::1]:41709 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIVj1-0006yz-HQ for incoming@patchwork.ozlabs.org; Wed, 07 Jun 2017 03:49:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57701) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIVgj-0005bz-NM for qemu-devel@nongnu.org; Wed, 07 Jun 2017 03:47:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dIVge-0006Um-RH for qemu-devel@nongnu.org; Wed, 07 Jun 2017 03:47:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43632) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dIVge-0006UY-IR for qemu-devel@nongnu.org; Wed, 07 Jun 2017 03:47:28 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8EA6780C01; Wed, 7 Jun 2017 07:47:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 8EA6780C01 Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=marcandre.lureau@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 8EA6780C01 Received: from localhost (ovpn-112-40.ams2.redhat.com [10.36.112.40]) by smtp.corp.redhat.com (Postfix) with ESMTP id 92501176B2; Wed, 7 Jun 2017 07:47:18 +0000 (UTC) From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Date: Wed, 7 Jun 2017 11:46:30 +0400 Message-Id: <20170607074632.13162-4-marcandre.lureau@redhat.com> In-Reply-To: <20170607074632.13162-1-marcandre.lureau@redhat.com> References: <20170607074632.13162-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 07 Jun 2017 07:47:27 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 3/5] arch: introduce ELF_NOTE_SIZE macro 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: pbonzini@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , peter.maydell@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Factour out a common pattern to compute the ELF note size. Signed-off-by: Marc-André Lureau --- target/i386/arch_dump.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/target/i386/arch_dump.c b/target/i386/arch_dump.c index 158e056b59..4471f44e3d 100644 --- a/target/i386/arch_dump.c +++ b/target/i386/arch_dump.c @@ -18,6 +18,11 @@ #include "elf.h" #include "sysemu/memory_mapping.h" +#define ELF_NOTE_SIZE(hdr_size, name_size, desc_size) \ + ((DIV_ROUND_UP((hdr_size), 4) \ + + DIV_ROUND_UP((name_size), 4) \ + + DIV_ROUND_UP((desc_size), 4)) * 4) + #ifdef TARGET_X86_64 typedef struct { target_ulong r15, r14, r13, r12, rbp, rbx, r11, r10; @@ -77,9 +82,7 @@ static int x86_64_write_elf64_note(WriteCoreDumpFunction f, regs.gs = env->segs[R_GS].selector; descsz = sizeof(x86_64_elf_prstatus); - note_size = (DIV_ROUND_UP(sizeof(Elf64_Nhdr), 4) - + DIV_ROUND_UP(name_size, 4) - + DIV_ROUND_UP(descsz, 4)) * 4; + note_size = ELF_NOTE_SIZE(sizeof(Elf64_Nhdr), name_size, descsz); note = g_malloc0(note_size); note->n_namesz = cpu_to_le32(name_size); note->n_descsz = cpu_to_le32(descsz); @@ -157,9 +160,7 @@ static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUX86State *env, x86_fill_elf_prstatus(&prstatus, env, id); descsz = sizeof(x86_elf_prstatus); - note_size = (DIV_ROUND_UP(sizeof(Elf64_Nhdr), 4) - + DIV_ROUND_UP(name_size, 4) - + DIV_ROUND_UP(descsz, 4)) * 4; + note_size = ELF_NOTE_SIZE(sizeof(Elf64_Nhdr), name_size, descsz); note = g_malloc0(note_size); note->n_namesz = cpu_to_le32(name_size); note->n_descsz = cpu_to_le32(descsz); @@ -213,9 +214,7 @@ int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs, x86_fill_elf_prstatus(&prstatus, &cpu->env, cpuid); descsz = sizeof(x86_elf_prstatus); - note_size = (DIV_ROUND_UP(sizeof(Elf32_Nhdr), 4) - + DIV_ROUND_UP(name_size, 4) - + DIV_ROUND_UP(descsz, 4)) * 4; + note_size = ELF_NOTE_SIZE(sizeof(Elf32_Nhdr), name_size, descsz); note = g_malloc0(note_size); note->n_namesz = cpu_to_le32(name_size); note->n_descsz = cpu_to_le32(descsz); @@ -446,12 +445,8 @@ ssize_t cpu_get_note_size(int class, int machine, int nr_cpus) #endif qemu_desc_size = sizeof(QEMUCPUState); - elf_note_size = (DIV_ROUND_UP(note_head_size, 4) - + DIV_ROUND_UP(name_size, 4) - + DIV_ROUND_UP(elf_desc_size, 4)) * 4; - qemu_note_size = (DIV_ROUND_UP(note_head_size, 4) - + DIV_ROUND_UP(name_size, 4) - + DIV_ROUND_UP(qemu_desc_size, 4)) * 4; + elf_note_size = ELF_NOTE_SIZE(note_head_size, name_size, elf_desc_size); + qemu_note_size = ELF_NOTE_SIZE(note_head_size, name_size, qemu_desc_size); return (elf_note_size + qemu_note_size) * nr_cpus; }