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Annotation of Net2/arch/i386/include/reg.h, revision 1.1.1.1

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:  *     @(#)reg.h       5.5 (Berkeley) 1/18/91
                     37:  */
                     38: 
                     39: /*
                     40:  * Location of the users' stored
                     41:  * registers within appropriate frame of 'trap' and 'syscall', relative to
                     42:  * base of stack frame.
                     43:  * Normal usage is u.u_ar0[XX] in kernel.
                     44:  */
                     45: 
                     46: /* When referenced during a trap/exception, registers are at these offsets */
                     47: 
                     48: #define        tES     (0)
                     49: #define        tDS     (1)
                     50: #define        tEDI    (2)
                     51: #define        tESI    (3)
                     52: #define        tEBP    (4)
                     53: 
                     54: #define        tEBX    (6)
                     55: #define        tEDX    (7)
                     56: #define        tECX    (8)
                     57: #define        tEAX    (9)
                     58: 
                     59: #define        tEIP    (12)
                     60: #define        tCS     (13)
                     61: #define        tEFLAGS (14)
                     62: #define        tESP    (15)
                     63: #define        tSS     (16)
                     64: 
                     65: /* During a system call, registers are at these offsets instead of above. */
                     66: 
                     67: #define        sEDI    (0)
                     68: #define        sESI    (1)
                     69: #define        sEBP    (2)
                     70: 
                     71: #define        sEBX    (4)
                     72: #define        sEDX    (5)
                     73: #define        sECX    (6)
                     74: #define        sEAX    (7)
                     75: #define        sEFLAGS (8)
                     76: #define        sEIP    (9)
                     77: #define        sCS     (10)
                     78: #define        sESP    (11)
                     79: #define        sSS     (12)
                     80: 
                     81: #define        PC      sEIP
                     82: #define        SP      sESP
                     83: #define        PS      sEFLAGS
                     84: #define        R0      sEDX
                     85: #define        R1      sECX
                     86: /*
                     87:  * Registers accessible to ptrace(2) syscall for debugger
                     88:  */
                     89: #ifdef IPCREG
                     90: #define        NIPCREG 14
                     91: int ipcreg[NIPCREG] =
                     92:   { tES,tDS,tEDI,tESI,tEBP,tEBX,tEDX,tECX,tEAX,tEIP,tCS,tEFLAGS,tESP,tSS };
                     93: #endif

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