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