/* $OpenBSD: proc.h,v 1.12 2016/05/15 23:37:42 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-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 */ }; #define __HAVE_MD_TCB /* * 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 */