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Annotation of Net2/arch/i386/include/frame.h, revision 1.1.1.2

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:  *
1.1.1.2 ! root       36:  *     from: @(#)frame.h       5.2 (Berkeley) 1/18/91
        !            37:  *     frame.h,v 1.3 1993/06/27 01:24:55 andrew Exp
1.1       root       38:  */
                     39: 
                     40: /*
                     41:  * System stack frames.
                     42:  */
                     43: 
                     44: /*
                     45:  * Exception/Trap Stack Frame
                     46:  */
                     47: 
                     48: struct trapframe {
                     49:        int     tf_es;
                     50:        int     tf_ds;
                     51:        int     tf_edi;
                     52:        int     tf_esi;
                     53:        int     tf_ebp;
                     54:        int     tf_isp;
                     55:        int     tf_ebx;
                     56:        int     tf_edx;
                     57:        int     tf_ecx;
                     58:        int     tf_eax;
                     59:        int     tf_trapno;
                     60:        /* below portion defined in 386 hardware */
                     61:        int     tf_err;
                     62:        int     tf_eip;
                     63:        int     tf_cs;
                     64:        int     tf_eflags;
                     65:        /* below only when transitting rings (e.g. user to kernel) */
                     66:        int     tf_esp;
                     67:        int     tf_ss;
                     68: };
                     69: 
                     70: /* Interrupt stack frame */
                     71: 
                     72: struct intrframe {
                     73:        int     if_vec;
                     74:        int     if_ppl;
                     75:        int     if_es;
                     76:        int     if_ds;
                     77:        int     if_edi;
                     78:        int     if_esi;
                     79:        int     if_ebp;
                     80:        int     :32;
                     81:        int     if_ebx;
                     82:        int     if_edx;
                     83:        int     if_ecx;
                     84:        int     if_eax;
                     85:        int     :32;            /* for compat with trap frame - trapno */
                     86:        int     :32;            /* for compat with trap frame - err */
                     87:        /* below portion defined in 386 hardware */
                     88:        int     if_eip;
                     89:        int     if_cs;
                     90:        int     if_eflags;
                     91:        /* below only when transitting rings (e.g. user to kernel) */
                     92:        int     if_esp;
                     93:        int     if_ss;
                     94: };
                     95: 
                     96: /*
                     97:  * Call Gate/System Call Stack Frame
                     98:  */
                     99: 
                    100: struct syscframe {
                    101:        int     sf_edi;
                    102:        int     sf_esi;
                    103:        int     sf_ebp;
                    104:        int     :32;            /* redundant save of isp */
                    105:        int     sf_ebx;
                    106:        int     sf_edx;
                    107:        int     sf_ecx;
                    108:        int     sf_eax;
                    109:        int     sf_eflags;
                    110:        /* below portion defined in 386 hardware */
1.1.1.2 ! root      111: /*     int     sf_args[N];      * if call gate copy args enabled!*/
1.1       root      112:        int     sf_eip;
                    113:        int     sf_cs;
                    114:        /* below only when transitting rings (e.g. user to kernel) */
                    115:        int     sf_esp;
                    116:        int     sf_ss;
                    117: };

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