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/* $OpenBSD: proc.h,v 1.13 2017/04/13 03:52:25 guenther Exp $ */
/* $NetBSD: proc.h,v 1.2 1995/03/24 15:01:36 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <machine/cpu.h>
/*
* Machine-dependent part of the proc struct for the Alpha.
*/
struct mdbpt {
vaddr_t addr;
u_int32_t contents;
};
struct mdproc {
u_int md_flags;
volatile u_int md_astpending; /* AST pending for this process */
struct trapframe *md_tf; /* trap/syscall registers */
struct pcb *md_pcbpaddr; /* phys addr of the pcb */
struct mdbpt md_sstep[2]; /* two breakpoints for sstep */
};
/*
* md_flags usage
* --------------
* MDP_FPUSED
* A largely unused bit indicating the presence of FPU history.
* Cleared on exec. Set but not used by the fpu context switcher
* itself.
*
* MDP_FP_C
* The architected FP Control word. It should forever begin at bit 1,
* as the bits are AARM specified and this way it doesn't need to be
* shifted.
*
* Until C99 there was never an IEEE 754 API, making most of the
* standard useless. Because of overlapping AARM, OSF/1, NetBSD, and
* C99 API's, the use of the MDP_FP_C bits is defined variously in
* ieeefp.h and fpu.h.
*/
#define MDP_FPUSED 0x00000001 /* Process used the FPU */
#ifndef NO_IEEE
#define MDP_FP_C 0x007ffffe /* Extended FP_C Quadword bits */
#endif
#define MDP_STEP1 0x00800000 /* Single step normal */
#define MDP_STEP2 0x01800000 /* Single step branch */
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