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Revision 26 - (hide annotations)
Mon Oct 8 16:20:10 2007 UTC (13 years, 3 months ago) by dpavlin
File size: 7016 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1264 2006/06/25 11:08:04 debug Exp $
20060624	Replacing the error-prone machine type initialization stuff
		with something more reasonable.
		Finally removing the old "cpu_run" kludge; moving around stuff
		in machine.c and emul.c to better suit the dyntrans system.
		Various minor dyntrans cleanups (renaming translate_address to
		translate_v2p, and experimenting with template physpages).
20060625	Removing the speed hack which separated the vph entries into
		two halves (code vs data); things seem a lot more stable now.
		Minor performance hack: R2000/R3000 cache isolation now only
		clears address translations when going into isolation, not
		when going out of it.
		Fixing the MIPS interrupt problems by letting mtc0 immediately
		cause interrupts.

==============  RELEASE  ==============

1 dpavlin 26 Release notes for Gavare's eXperimental Emulator (GXemul),
2     ==================================================================
3 dpavlin 2
4 dpavlin 22 Copyright (C) 2003-2006 Anders Gavare.
5 dpavlin 2
7 dpavlin 14 GXemul is an experimental instruction-level machine emulator. Several
8     emulation modes are available. In some modes, processors and surrounding
9 dpavlin 12 hardware components are emulated well enough to let unmodified operating
10     systems (e.g. NetBSD) run as if they were running on a real machine.
11 dpavlin 2
12 dpavlin 22 The documentation lists the machines and guest operating systems that can
13     be regarded as "working" in GXemul. The best supported guest operating
14     systems are probably NetBSD/pmax, NetBSD/cats, and OpenBSD/cats.
15 dpavlin 2
16 dpavlin 20
17 dpavlin 26 The most important change between release 0.3.8 and is:
18 dpavlin 12
19 dpavlin 24 o) The emulation of MIPS processors has been completely rewritten;
20     it now uses the same portable dynamic translation system as the
21     ARM and PowerPC emulation modes.
22 dpavlin 2
23 dpavlin 24 On Alpha and i386 hosts (and AMD64 hosts running in 32-bit mode),
24     GXemul previously used translation into native code. This release
25     will perform worse than 0.3.8 on those host architectures.
26 dpavlin 10
27 dpavlin 24 On all other hosts (including AMD64 running in native 64-bit mode),
28 dpavlin 26 0.4.0 is likely to be faster than 0.3.8, when emulating MIPS.
29 dpavlin 2
30 dpavlin 24 I think that in the long term, moving towards full portability like
31     this is a good idea.
32 dpavlin 2
33 dpavlin 26 (0.4.0 was a bit buggy and unstable; is a quick-fix release.)
34 dpavlin 2
35 dpavlin 24 There have also been many other changes, including, but not limited to:
36 dpavlin 2
37 dpavlin 24 o) The "test machine" functionality is more well-defined than before,
38     and some tutorial-like demos have been added. These could be useful
39     e.g. in operating system construction courses.
40 dpavlin 20
41 dpavlin 24 o) NetBSD/sgimips 3.0 works now. This is most likely due to the rewrite
42     of the MIPS emulation mode. Previous releases of GXemul only worked
43     with NetBSD/sgimips 2.1.
45     o) I have begun implementing rudimentary support for GDB remote serial
46     protocol connections. This means that you can run e.g. the Data
47     Display Debugger, and connect it to a GXemul instance.
49     No advanced GDB functionality is working yet, but starting and
50     stopping the emulated machine and single-stepping should work.
52     Please read the HISTORY files for more details.
55 dpavlin 2 Files included in this release are:
57     HISTORY Detailed revision history / changelog.
58     LICENSE Copyright message / license.
59     README Quick start instructions, for the impatient.
60     RELEASE This file.
61     TODO TODO notes.
62 dpavlin 4 configure, Makefile.skel sh and make scripts for building GXemul.
63 dpavlin 24 demos Tutorial-like demos of testmachine functionality.
64 dpavlin 2 doc Documentation.
65     experiments Experimental code. (Usually not needed.)
66 dpavlin 4 src Source code.
67 dpavlin 2
68 dpavlin 24 To build the emulator, run the configure script, and then run make. This
69 dpavlin 22 should work on most Unix-like systems.
70 dpavlin 2
71 dpavlin 24
72 dpavlin 4 Regarding files in the src/include/ directory: only some of these are written
73     by me, the rest are from other sources (such as NetBSD). The license text says
74 dpavlin 2 that "All advertising materials mentioning features or use of this software"
75     must display acknowledgements. Even though I do NOT feel I mention features or
76     use of the header files (the "software") in any advertising materials, I am
77     still very grateful for the fact that these people have made their files
78     available for re-use, so regardless of legal requirements, I guess thanking
79     them like this is in order:
81     This product includes software developed by the University of
82     California, Berkeley and its contributors.
84     This product includes software developed for the
85     NetBSD Project. See http://www.netbsd.org/ for
86     information about NetBSD.
88     This product includes software developed by Jonathan Stone for
89     the NetBSD Project.
91     This product includes software developed for the NetBSD Project
92     by Matthias Drochner.
94     This product includes software developed by the NetBSD
95     Foundation, Inc. and its contributors.
97     This product includes software developed by Christopher G. Demetriou.
98     [for the NetBSD Project.]
100     This product includes software developed by Adam Glass.
102     This product includes software developed by the PocketBSD project
103     and its contributors.
105     This product includes software developed by Peter Galbavy.
107     Carnegie Mellon University (multiple header files,
108     no specific advertisement text required)
110     This product includes software developed by Charles M. Hannum.
112     This product includes software developed under OpenBSD by Per Fogelström.
114     This product includes software developed by Per Fogelström.
116     This product includes software developed at Ludd, University of
117     Luleå, Sweden and its contributors.
119     This product includes software developed by Hellmuth Michaelis
120     and Joerg Wunsch
122     The font(s) in devices/fonts are Copyright (c) 1992, 1993, 1994
123     by Hellmuth Michaelis and Joerg Wunsch. ("This product includes software
124     developed by Hellmuth Michaelis and Joerg Wunsch", well, the font
125     is maybe not software, but still...)
127     impactsr-bsd.h is Copyright (C) 2004 by Stanislaw Skowronek.
129     This product includes software developed for the NetBSD Project by
130     Wasabi Systems, Inc. [by Simon Burge]
132     arcbios_other.h is Copyright (c) 1996 M. Warner Losh.
134     This product includes software developed by Marc Horowitz.
136 dpavlin 14 This product includes software developed by Brini.
138     This product includes software developed by Mark Brinicombe
139     for the NetBSD Project.
141 dpavlin 20 This product includes software developed by TooLs GmbH.
143     This product includes software developed by Manuel Bouyer.
145 dpavlin 22 This product includes software developed by the Alice Group.
147 dpavlin 24 This product includes software developed by Ichiro FUKUHARA.
149 dpavlin 12 Also, src/include/alpha_rpb.h requires the following:
151     Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
152     All rights reserved.
154     Author: Keith Bostic, Chris G. Demetriou
156     Permission to use, copy, modify and distribute this software and
157     its documentation is hereby granted, provided that both the copyright
158     notice and this permission notice appear in all copies of the
159     software, derivative works or modified versions, and any portions
160     thereof, and that both notices appear in supporting documentation.
162 dpavlin 2 See individual files for license details, if you plan to redistribute GXemul
163     or reuse code.
165 dpavlin 24
166 dpavlin 22 Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli Mallett,
167     Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and
168     everyone else who has provided me with feedback.
169 dpavlin 2
170 dpavlin 24 Special thanks to Alec Voropay for testing this release with Linux
171     kernels, and on Cygwin, and also thanks to Ondrej Palkovsky for testing
172     with HelenOS.
174 dpavlin 2 If you have found GXemul useful in some way, or feel like sending me comments
175     or feedback in general, then mail me at anders(at)gavare.se.

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