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File: [cvs.NetBSD.org] / src / sys / arch / i386 / i386 / linux_sigcode.S (download)
Revision 1.6, Sun Dec 11 12:17:41 2005 UTC (18 years, 3 months ago) by christos
merge ktrace-lwp. |
/* $NetBSD: linux_sigcode.S,v 1.6 2005/12/11 12:17:41 christos Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)locore.s 7.3 (Berkeley) 5/13/91 */ #if defined(_KERNEL_OPT) #include "opt_vm86.h" #endif #include "assym.h" #include <machine/asm.h> #include <compat/linux/linux_syscall.h> /*****************************************************************************/ /* * Signal trampoline; copied to top of user stack. */ /* LINTSTUB: Var: char linux_sigcode[1], linux_esigcode[1]; */ NENTRY(linux_sigcode) call *LINUX_SIGF_HANDLER(%esp) leal LINUX_SIGF_SC(%esp),%ebx # scp (the call may have clobbered the # copy at SIGF_SCP(%esp)) pushl %eax # junk to fake return address movl $LINUX_SYS_sigreturn,%eax int $0x80 # enter kernel with args on stack movl $LINUX_SYS_exit,%eax int $0x80 # exit if sigreturn fails /* LINTSTUB: Var: char linux_rt_sigcode[1]; */ NENTRY(linux_rt_sigcode) call *LINUX_RT_SIGF_HANDLER(%esp) leal LINUX_RT_SIGF_UC(%esp),%ebx # scp (the call may have clobbered the # copy at SIGF_SCP(%esp)) pushl %eax # junk to fake return address movl $LINUX_SYS_rt_sigreturn,%eax int $0x80 # enter kernel with args on stack movl $LINUX_SYS_exit,%eax int $0x80 # exit if sigreturn fails .globl _C_LABEL(linux_esigcode) _C_LABEL(linux_esigcode):