reg.h revision 827
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 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91 37 * $Id: reg.h,v 1.4 1993/11/16 09:54:57 davidg Exp $ 38 */ 39 40#ifndef _MACHINE_REG_H_ 41#define _MACHINE_REG_H_ 1 42 43/* 44 * Location of the users' stored 45 * registers within appropriate frame of 'trap' and 'syscall', relative to 46 * base of stack frame. 47 * Normal usage is u.u_ar0[XX] in kernel. 48 */ 49 50/* When referenced during a trap/exception, registers are at these offsets */ 51 52#define tES (0) 53#define tDS (1) 54#define tEDI (2) 55#define tESI (3) 56#define tEBP (4) 57 58#define tEBX (6) 59#define tEDX (7) 60#define tECX (8) 61#define tEAX (9) 62 63#define tERR (11) 64 65#define tEIP (12) 66#define tCS (13) 67#define tEFLAGS (14) 68#define tESP (15) 69#define tSS (16) 70 71/* During a system call, registers are at these offsets instead of above. */ 72 73#define sEDI (0) 74#define sESI (1) 75#define sEBP (2) 76 77#define sEBX (4) 78#define sEDX (5) 79#define sECX (6) 80#define sEAX (7) 81#define sEFLAGS (8) 82#define sEIP (9) 83#define sCS (10) 84#define sESP (11) 85#define sSS (12) 86 87#define PC sEIP 88#define SP sESP 89#define PS sEFLAGS 90#define R0 sEDX 91#define R1 sECX 92 93/* 94 * Registers accessible to ptrace(2) syscall for debugger 95 * The machine-dependent code for PT_{SET,GET}REGS needs to 96 * use whichver order, defined above, is correct, so that it 97 * is all invisible to the user. 98 */ 99struct regs { 100 unsigned int r_es; 101 unsigned int r_ds; 102 unsigned int r_edi; 103 unsigned int r_esi; 104 unsigned int r_ebp; 105 unsigned int r_ebx; 106 unsigned int r_edx; 107 unsigned int r_ecx; 108 unsigned int r_eax; 109 unsigned int r_eip; 110 unsigned int r_cs; 111 unsigned int r_eflags; 112 unsigned int r_esp; 113 unsigned int r_ss; 114 unsigned int r_fs; 115 unsigned int r_gs; 116}; 117 118#endif /* _MACHINE_REG_H_ */ 119