90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/* $NetBSD: frame.h,v 1.1 1995/02/13 23:07:39 cgd Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _ALPHA_FRAME_H_
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#define _ALPHA_FRAME_H_
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/*
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* XXX where did this info come from?
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*/
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/*
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* Trap and syscall frame.
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*
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* Hardware puts fields marked "[HW]" on stack. We have to add
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* all of the general-purpose registers except for zero, for sp,
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* which is automatically saved in usp for traps, and implicitly
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* saved for syscalls, and for a0-a2, which are saved by hardware.
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*/
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/* Number of registers saved, including padding. */
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#define FRAME_NSAVEREGS 28
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/* The offsets of the registers to be saved, into the array. */
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#define FRAME_V0 0
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#define FRAME_T0 1
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#define FRAME_T1 2
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#define FRAME_T2 3
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#define FRAME_T3 4
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#define FRAME_T4 5
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#define FRAME_T5 6
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#define FRAME_T6 7
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#define FRAME_T7 8
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#define FRAME_S0 9
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#define FRAME_S1 10
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#define FRAME_S2 11
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#define FRAME_S3 12
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#define FRAME_S4 13
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#define FRAME_S5 14
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#define FRAME_S6 15
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#define FRAME_A3 16
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#define FRAME_A4 17
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#define FRAME_A5 18
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#define FRAME_T8 19
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#define FRAME_T9 20
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#define FRAME_T10 21
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#define FRAME_T11 22
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#define FRAME_RA 23
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#define FRAME_T12 24
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#define FRAME_AT 25
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#define FRAME_SP 26
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#define FRAME_SPARE 27 /* spare; padding */
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struct trapframe {
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u_int64_t tf_regs[FRAME_NSAVEREGS]; /* GPRs (listed above) */
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u_int64_t tf_ps; /* processor status [HW] */
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u_int64_t tf_pc; /* program counter [HW] */
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u_int64_t tf_gp; /* global pointer [HW] */
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u_int64_t tf_a0; /* saved a0 [HW] */
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u_int64_t tf_a1; /* saved a1 [HW] */
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u_int64_t tf_a2; /* saved a2 [HW] */
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};
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#endif /* _ALPHA_FRAME_H_ */
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