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Annotation of sys/arch/i386/include/frame.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: frame.h,v 1.8 2006/11/27 18:04:28 gwk Exp $   */
        !             2: /*     $NetBSD: frame.h,v 1.12 1995/10/11 04:20:08 mycroft Exp $       */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
        !             6:  * Copyright (c) 1990 The Regents of the University of California.
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software contributed to Berkeley by
        !            10:  * William Jolitz.
        !            11:  *
        !            12:  * Redistribution and use in source and binary forms, with or without
        !            13:  * modification, are permitted provided that the following conditions
        !            14:  * are met:
        !            15:  * 1. Redistributions of source code must retain the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer.
        !            17:  * 2. Redistributions in binary form must reproduce the above copyright
        !            18:  *    notice, this list of conditions and the following disclaimer in the
        !            19:  *    documentation and/or other materials provided with the distribution.
        !            20:  * 3. 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:  *     @(#)frame.h     5.2 (Berkeley) 1/18/91
        !            37:  */
        !            38:
        !            39: #ifndef _MACHINE_FRAME_H
        !            40: #define _MACHINE_FRAME_H
        !            41: #include <sys/signal.h>
        !            42:
        !            43: /*
        !            44:  * System stack frames.
        !            45:  */
        !            46:
        !            47: /*
        !            48:  * Exception/Trap Stack Frame
        !            49:  */
        !            50: struct trapframe {
        !            51:        int     tf_fs;
        !            52:        int     tf_gs;
        !            53:        int     tf_es;
        !            54:        int     tf_ds;
        !            55:        int     tf_edi;
        !            56:        int     tf_esi;
        !            57:        int     tf_ebp;
        !            58:        int     tf_ebx;
        !            59:        int     tf_edx;
        !            60:        int     tf_ecx;
        !            61:        int     tf_eax;
        !            62:        int     tf_trapno;
        !            63:        /* below portion defined in 386 hardware */
        !            64:        int     tf_err;
        !            65:        int     tf_eip;
        !            66:        int     tf_cs;
        !            67:        int     tf_eflags;
        !            68:        /* below used when transitting rings (e.g. user to kernel) */
        !            69:        int     tf_esp;
        !            70:        int     tf_ss;
        !            71:        /* below used when switching out of VM86 mode */
        !            72:        int     tf_vm86_es;
        !            73:        int     tf_vm86_ds;
        !            74:        int     tf_vm86_fs;
        !            75:        int     tf_vm86_gs;
        !            76: };
        !            77:
        !            78: /*
        !            79:  * Interrupt stack frame
        !            80:  */
        !            81: struct intrframe {
        !            82:        int     if_ppl;
        !            83:        int     if_fs;
        !            84:        int     if_gs;
        !            85:        int     if_es;
        !            86:        int     if_ds;
        !            87:        int     if_edi;
        !            88:        int     if_esi;
        !            89:        int     if_ebp;
        !            90:        int     if_ebx;
        !            91:        int     if_edx;
        !            92:        int     if_ecx;
        !            93:        int     if_eax;
        !            94:        int     :32;            /* for compat with trap frame - trapno */
        !            95:        int     :32;            /* for compat with trap frame - err */
        !            96:        /* below portion defined in 386 hardware */
        !            97:        int     if_eip;
        !            98:        int     if_cs;
        !            99:        int     if_eflags;
        !           100:        /* below only when transitting rings (e.g. user to kernel) */
        !           101:        int     if_esp;
        !           102:        int     if_ss;
        !           103: };
        !           104:
        !           105: /*
        !           106:  * Stack frame inside cpu_switch()
        !           107:  */
        !           108: struct switchframe {
        !           109:        int     sf_ppl;
        !           110:        int     sf_edi;
        !           111:        int     sf_esi;
        !           112:        int     sf_ebx;
        !           113:        int     sf_eip;
        !           114: };
        !           115:
        !           116: /*
        !           117:  * Signal frame
        !           118:  */
        !           119: struct sigframe {
        !           120:        int     sf_signum;
        !           121:        siginfo_t *sf_sip;
        !           122:        struct  sigcontext *sf_scp;
        !           123:        sig_t   sf_handler;
        !           124:        struct  sigcontext sf_sc;
        !           125:        siginfo_t sf_si;
        !           126:        void    *sf_fpstate;
        !           127: };
        !           128: #endif