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Annotation of sys/arch/amd64/include/userret.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: userret.h,v 1.3 2005/12/13 00:18:19 jsg Exp $ */
                      2: /*     $NetBSD: userret.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */
                      3:
                      4: /*
                      5:  * XXXfvdl same as i386 counterpart, but should probably be independent.
                      6:  */
                      7:
                      8: /*-
                      9:  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
                     10:  * All rights reserved.
                     11:  *
                     12:  * This code is derived from software contributed to The NetBSD Foundation
                     13:  * by Charles M. Hannum.
                     14:  *
                     15:  * Redistribution and use in source and binary forms, with or without
                     16:  * modification, are permitted provided that the following conditions
                     17:  * are met:
                     18:  * 1. Redistributions of source code must retain the above copyright
                     19:  *    notice, this list of conditions and the following disclaimer.
                     20:  * 2. Redistributions in binary form must reproduce the above copyright
                     21:  *    notice, this list of conditions and the following disclaimer in the
                     22:  *    documentation and/or other materials provided with the distribution.
                     23:  * 3. All advertising materials mentioning features or use of this software
                     24:  *    must display the following acknowledgement:
                     25:  *        This product includes software developed by the NetBSD
                     26:  *        Foundation, Inc. and its contributors.
                     27:  * 4. Neither the name of The NetBSD Foundation nor the names of its
                     28:  *    contributors may be used to endorse or promote products derived
                     29:  *    from this software without specific prior written permission.
                     30:  *
                     31:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     32:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     33:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     34:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     35:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     36:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     37:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     38:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     39:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     40:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     41:  * POSSIBILITY OF SUCH DAMAGE.
                     42:  */
                     43:
                     44: /*-
                     45:  * Copyright (c) 1990 The Regents of the University of California.
                     46:  * All rights reserved.
                     47:  *
                     48:  * This code is derived from software contributed to Berkeley by
                     49:  * William Jolitz.
                     50:  *
                     51:  * Redistribution and use in source and binary forms, with or without
                     52:  * modification, are permitted provided that the following conditions
                     53:  * are met:
                     54:  * 1. Redistributions of source code must retain the above copyright
                     55:  *    notice, this list of conditions and the following disclaimer.
                     56:  * 2. Redistributions in binary form must reproduce the above copyright
                     57:  *    notice, this list of conditions and the following disclaimer in the
                     58:  *    documentation and/or other materials provided with the distribution.
                     59:  * 3. Neither the name of the University nor the names of its contributors
                     60:  *    may be used to endorse or promote products derived from this software
                     61:  *    without specific prior written permission.
                     62:  *
                     63:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     64:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     65:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     66:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     67:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     68:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     69:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     70:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     71:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     72:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     73:  * SUCH DAMAGE.
                     74:  *
                     75:  */
                     76:
                     77: #include <sys/signalvar.h>
                     78: #include <machine/cpu.h>
                     79:
                     80: static __inline void userret(struct proc *);
                     81:
                     82: /*
                     83:  * Define the code needed before returning to user mode, for
                     84:  * trap and syscall.
                     85:  */
                     86: static __inline void
                     87: userret(struct proc *p)
                     88: {
                     89:        int sig;
                     90:
                     91:        while ((sig = CURSIG(p)) != 0)
                     92:                postsig(sig);
                     93:
                     94:        curcpu()->ci_schedstate.spc_curpriority = p->p_priority = p->p_usrpri;
                     95: }