From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 2 May 2001 12:16:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 2 May 2001 12:14:24 -0400 Received: from ludwig-alpha.unil.ch ([192.42.197.33]:33182 "EHLO ludwig-alpha.unil.ch") by vger.kernel.org with ESMTP id ; Wed, 2 May 2001 12:14:03 -0400 Message-Id: <200105021613.SAA22580@ludwig-alpha.unil.ch> X-Mailer: exmh version 2.1.1 10/15/1999 To: linux-kernel@vger.kernel.org Subject: Linux 2.4.4-ac3, asm problem in asm-i386/rwsem.h using gcc 3.0 CVS Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 02 May 2001 18:13:59 +0200 From: Christian Iseli Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, I currently fail to compile the 2.4.4-ac3 kernel using latest GCC 3.0 from CVS: gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -pipe -mpreferred-stack-boundary=2 -march=i686 -DEXPORT_SYMTAB -c sys.c sys.c: In function `sys_gethostname': /usr/src/linux/include/asm/rwsem.h:152: inconsistent operand constraints in an `asm' Here is the code exerpt: /* * unlock after reading */ static inline void __up_read(struct rw_semaphore *sem) { __s32 tmp = -RWSEM_ACTIVE_READ_BIAS; __asm__ __volatile__( "# beginning __up_read\n\t" LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns the old value */ " js 2f\n\t" /* jump if the lock is being waited upon */ "1:\n\t" ".section .text.lock,\"ax\"\n" "2:\n\t" " decw %%dx\n\t" /* do nothing if still outstanding active readers */ " jnz 1b\n\t" " pushl %%ecx\n\t" " call rwsem_wake\n\t" " popl %%ecx\n\t" " jmp 1b\n" ".previous\n" "# ending __up_read\n" : "+m"(sem->count), "+d"(tmp) : "a"(sem) : "memory", "cc"); } I'm afraid I know zilch about asm constraints... Can anybody spot the trouble (and fix it :) ? Thanks, Christian