5596cfd09a
exceptions from both kernel and user mode. * Fix context switching so that we can switch back to a proc which we switched away from (we were saving the state in the wrong place). * Implement lazy switching of the high-fp state. This needs to be looked at again for SMP to cope with the case of a process migrating from one processor to another while it has the high-fp state. * Make setregs() work properly. I still think this should be called cpu_exec() or something. * Various other minor fixes. With this lot, we can execve() /sbin/init and we get all the way up to its first syscall. At that point, we stop because syscall handling is not done yet.
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: proc.h,v 1.3 1997/04/06 08:47:36 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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#include <machine/globaldata.h>
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#include <machine/globals.h>
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/*
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* Machine-dependent part of the proc struct for the Alpha.
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*/
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struct mdproc {
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u_long md_flags;
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struct user *md_uservirt; /* virtual address of p_addr */
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vm_offset_t md_bspstore; /* initial ar.bspstore */
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struct trapframe *md_tf; /* trap/syscall registers */
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};
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#define MDP_FPUSED 0x0001 /* Process used the FPU */
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#define MDP_UAC_NOPRINT 0x0010 /* Don't print unaligned traps */
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#define MDP_UAC_NOFIX 0x0020 /* Don't fixup unaligned traps */
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#define MDP_UAC_SIGBUS 0x0040 /* Deliver SIGBUS upon
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unaligned access */
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#define MDP_UAC_MASK (MDP_UAC_NOPRINT | MDP_UAC_NOFIX | MDP_UAC_SIGBUS)
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