From patchwork Mon Sep 4 18:35:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uros Bizjak X-Patchwork-Id: 809786 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=gcc.gnu.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=gcc-patches-return-461442-incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b="hXJ+YXCG"; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xmJSP1S7kz9sPk for ; Tue, 5 Sep 2017 04:35:32 +1000 (AEST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender :mime-version:from:date:message-id:subject:to:content-type; q= dns; s=default; b=ggwDp2rpEkNrthhYEvoghQg4hzzq1KpQKNzdZjQrOAzKKx IlPSS0Eo79BpoqNjdHZ1+74wZjoLixLeV0w8DgBljp4GCVWvQTgqYu9r/RRPHsrC J/eTuzjoHiE7ijKXn6EygG/LPa6K7Q5jxJVPmTbUZMTWS1l/0W64kbsK3qWoQ= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender :mime-version:from:date:message-id:subject:to:content-type; s= default; bh=6PnWPdw5EZzZxdM0n18PW8LwE+w=; b=hXJ+YXCGXF3jLbvInu6e q9HjysQ6zVKH9UkNFR3CbAZvccZ3SGcpUEkEOBBNAdDVsFclA1uTwkulD9wS4VjN xrXZN13lBtcDpFwFxDvPSwlIGQ5dOLFhEtfQxf7nv+ZlxzmJYpA+v/LmbVetFYbE EurvUseN8998nHbQSs1jSkk= Received: (qmail 112536 invoked by alias); 4 Sep 2017 18:35:25 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 112469 invoked by uid 89); 4 Sep 2017 18:35:24 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-10.1 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, GIT_PATCH_2, GIT_PATCH_3, KAM_ASCII_DIVIDERS, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM, SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mail-ua0-f178.google.com Received: from mail-ua0-f178.google.com (HELO mail-ua0-f178.google.com) (209.85.217.178) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 04 Sep 2017 18:35:19 +0000 Received: by mail-ua0-f178.google.com with SMTP id k23so3208826uaf.4 for ; Mon, 04 Sep 2017 11:35:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=VcoQH/kbP9djrT9eIXj08QfCt//AQyg3ZWt/DH5y0vE=; b=kcCcEX7ZWH0GLuRZsNIpScYqUMev2g4C2AQrWET63r5qtrhffg/B8yVEFuM8atw1PE 6JlDvM3kal/6rwhNrujdtd1KBbrVUDK9xmVmG6Kb0uMLT1Zx8L3bKqRhj4Jsr5ZoirfG f80eSmEgt+1knHeAPcWiXC/Fwg2YwNMo7SPvRpGcyGO1PJhjMeXnYREsJbjIQ2F0I+uI IC23MWomOq8VS+OkFyXfSSeXGbEeATaT7nRRH4/E1e5TZGrpWGPCQl5gqgbDygfW6V5X LhOr9MXLmAq0/OKKJbSHVLJbf0KM6v8KyuJyXvGr9Eu7HniWu95nXasm6sFyPyMJ0wVM dWaQ== X-Gm-Message-State: AHPjjUjSfC/caDmx7r7jxw9VWfefEt/1dJlbkhY6A8tmnrZ1avlNkiDE mxffGKGWSKbvAw/a5lggp5xnqETZ67gE X-Google-Smtp-Source: ADKCNb5sG0r0mJntvwXz0JZmlrOG8rAuL/d4WsHZFOR9Hn3HpNNm3b1dN7XlO/i3BMxVe6hn0MYUTDwVNHh/mqpQYZc= X-Received: by 10.176.9.110 with SMTP id c46mr909317uah.32.1504550117358; Mon, 04 Sep 2017 11:35:17 -0700 (PDT) MIME-Version: 1.0 Received: by 10.103.55.28 with HTTP; Mon, 4 Sep 2017 11:35:16 -0700 (PDT) From: Uros Bizjak Date: Mon, 4 Sep 2017 20:35:16 +0200 Message-ID: Subject: [PATCH, i386 testsuite]: Introduce gcc.target/i386/mpx/mpx-os-support.h To: "gcc-patches@gcc.gnu.org" 2017-09-04 Uros Bizjak * gcc.target/i386/mpx/mpx-os-support.h: New file. * gcc.target/i386/mpx/mpx-check.h: Include mpx-os-support.h. Tested on x86_64-linux-gnu {,-m32}. Committed to mainline SVN. Uros. Index: gcc.target/i386/mpx/mpx-check.h =================================================================== --- gcc.target/i386/mpx/mpx-check.h (revision 251661) +++ gcc.target/i386/mpx/mpx-check.h (working copy) @@ -1,8 +1,8 @@ #include #include #include - #include "cpuid.h" +#include "mpx-os-support.h" static int __attribute__ ((noinline)) @@ -16,16 +16,6 @@ #define DEBUG -#define XSTATE_BNDREGS (1 << 3) - -/* This should be an intrinsic, but isn't. */ -static int xgetbv (unsigned x) -{ - unsigned eax, edx; - asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (x)); - return eax; -} - static int check_osxsave (void) { @@ -44,7 +34,7 @@ return NORUNRES; /* Run MPX test only if host has MPX support. */ - if (check_osxsave () && (ebx & bit_MPX) && (xgetbv (0) & XSTATE_BNDREGS)) + if (check_osxsave () && (ebx & bit_MPX) && mpx_os_support ()) mpx_test (argc, argv); else { Index: gcc.target/i386/mpx/mpx-os-support.h =================================================================== --- gcc.target/i386/mpx/mpx-os-support.h (nonexistent) +++ gcc.target/i386/mpx/mpx-os-support.h (working copy) @@ -0,0 +1,16 @@ +/* Check if the OS supports executing MPX instructions. */ + +#define XCR_XFEATURE_ENABLED_MASK 0x0 + +#define XSTATE_BNDREGS 0x8 + +static int +mpx_os_support (void) +{ + unsigned int eax, edx; + unsigned int ecx = XCR_XFEATURE_ENABLED_MASK; + + __asm__ ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (ecx)); + + return (eax & XSTATE_BNDREGS) != 0; +}