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reg.h revision 1.1 
      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
     94