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reg.h revision 1.7 
      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  *	reg.h,v 1.4 1993/09/05 03:54:15 sef Exp
     38  */
     39 
     40 #ifndef _I386_REG_H_
     41 #define _I386_REG_H_
     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 #define	tISP	(5)
     58 #define	tEBX	(6)
     59 #define	tEDX	(7)
     60 #define	tECX	(8)
     61 #define	tEAX	(9)
     62 
     63 #define	tEIP	(12)
     64 #define	tCS	(13)
     65 #define	tEFLAGS	(14)
     66 #define	tESP	(15)
     67 #define	tSS	(16)
     68 
     69 /*
     70  * Registers accessible to ptrace(2) syscall for debugger
     71  * The machine-dependent code for PT_{SET,GET}REGS needs to
     72  * use whichver order, defined above, is correct, so that it
     73  * is all invisible to the user.
     74  */
     75 struct regs {
     76 	unsigned int	r_es;
     77 	unsigned int	r_ds;
     78 	unsigned int	r_edi;
     79 	unsigned int	r_esi;
     80 	unsigned int	r_ebp;
     81 	unsigned int	r_ebx;
     82 	unsigned int	r_edx;
     83 	unsigned int	r_ecx;
     84 	unsigned int	r_eax;
     85 	unsigned int	r_eip;
     86 	unsigned int	r_cs;
     87 	unsigned int	r_eflags;
     88 	unsigned int	r_esp;
     89 	unsigned int	r_ss;
     90 	unsigned int	r_fs;
     91 	unsigned int	r_gs;
     92 };
     93 
     94 #endif /* !_I386_REG_H_ */
     95