From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20211 invoked by alias); 15 Jan 2012 06:05:04 -0000 Received: (qmail 20198 invoked by uid 22791); 15 Jan 2012 06:05:03 -0000 X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_BJ,TW_CX,TW_DC,TW_GX,TW_VL X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 15 Jan 2012 06:04:50 +0000 From: "th020394 at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug inline-asm/51863] New: invlpg with -masm=intel generates memory operand size error in assembly stage Date: Sun, 15 Jan 2012 08:06:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: inline-asm X-Bugzilla-Keywords: X-Bugzilla-Severity: minor X-Bugzilla-Who: th020394 at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-01/txt/msg01656.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51863 Bug #: 51863 Summary: invlpg with -masm=intel generates memory operand size error in assembly stage Classification: Unclassified Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: minor Priority: P3 Component: inline-asm AssignedTo: unassigned@gcc.gnu.org ReportedBy: th020394@gmail.com The expected behavior would be to generate code analogous to that of the default -masm=att, which uses no size prefixes to address the memory operand of invlpg. The actual behavior is that -masm=intel causes GCC to emit code that uses a size prefix (like dword, byte, etc.) which causes an error in GAS when the code is assembled. The command that generates the error is: gcc -masm=intel main.c The same command without -masm=intel works. Output of "gcc -v" Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6.1/lto-wrapper Target: i686-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu Thread model: posix gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) The system type is Linux Mint 12, but I've found the same bug in i686-elf for GCC 4.6.2.