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Annotation of Net2/arch/i386/include/psl.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * William Jolitz.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)psl.h       5.2 (Berkeley) 1/18/91
        !            37:  */
        !            38: 
        !            39: /*
        !            40:  * 386 processor status longword.
        !            41:  */
        !            42: #define        PSL_C           0x00000001      /* carry bit */
        !            43: #define        PSL_PF          0x00000004      /* parity bit */
        !            44: #define        PSL_AF          0x00000010      /* bcd carry bit */
        !            45: #define        PSL_Z           0x00000040      /* zero bit */
        !            46: #define        PSL_N           0x00000080      /* negative bit */
        !            47: #define        PSL_ALLCC       0x000000d5      /* all cc bits - unlikely */
        !            48: #define        PSL_T           0x00000100      /* trace enable bit */
        !            49: #define        PSL_I           0x00000200      /* interrupt enable bit */
        !            50: #define        PSL_D           0x00000400      /* string instruction direction bit */
        !            51: #define        PSL_V           0x00000800      /* overflow bit */
        !            52: #define        PSL_IOPL        0x00003000      /* i/o priviledge level enable */
        !            53: #define        PSL_NT          0x00004000      /* nested task bit */
        !            54: #define        PSL_RF          0x00010000      /* restart flag bit */
        !            55: #define        PSL_VM          0x00020000      /* virtual 8086 mode bit */
        !            56: 
        !            57: #define        PSL_MBZ         0xfffc7fb7      /* must be zero bits */
        !            58: #define        PSL_MBO         0x00000002      /* must be one bits */
        !            59: 
        !            60: #define        PSL_USERSET     (PSL_IOPL)
        !            61: #define        PSL_USERCLR     (PSL_I|PSL_NT)

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