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Revision 20 - (hide annotations)
Mon Oct 8 16:19:23 2007 UTC (13 years, 3 months ago) by dpavlin
File size: 8620 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1055 2005/11/25 22:48:36 debug Exp $
20051031	Adding disassembly support for more ARM instructions (clz,
		smul* etc), and adding a hack to support "new tiny" pages
		for StrongARM.
20051101	Minor documentation updates (NetBSD 2.0.2 -> 2.1, and OpenBSD
		3.7 -> 3.8, and lots of testing).
		Changing from 1-sector PIO mode 0 transfers to 128-sector PIO
		mode 3 (in dev_wdc).
		Various minor ARM dyntrans updates (pc-relative loads from
		within the same page as the instruction are now treated as
		constant "mov").
20051102	Re-enabling instruction combinations (they were accidentally
		Dyntrans TLB entries are now overwritten using a round-robin
		scheme instead of randomly. This increases performance.
		Fixing a typo in file.c (thanks to Chuan-Hua Chang for
		noticing it).
		Experimenting with adding ATAPI support to dev_wdc (to make
		emulated *BSD detect cdroms as cdroms, not harddisks).
20051104	Various minor updates.
20051105	Continuing on the ATAPI emulation. Seems to work well enough
		for a NetBSD/cats installation, but not OpenBSD/cats.
		Various other updates.
20051106	Modifying the -Y command line option to allow scaleup with
		certain graphic controllers (only dev_vga so far), not just
		Some minor dyntrans cleanups.
20051107	Beginning a cleanup up the PCI subsystem (removing the
		read_register hack, etc).
20051108	Continuing the cleanup; splitting up some pci devices into a
		normal autodev device and some separate pci glue code.
20051109	Continuing on the PCI bus stuff; all old pci_*.c have been
		incorporated into normal devices and/or rewritten as glue code
		only, adding a dummy Intel 82371AB PIIX4 for Malta (not really
		tested yet).
		Minor pckbc fix so that Linux doesn't complain.
		Working on the DEC 21143 NIC (ethernet mac rom stuff mostly).
		Various other minor fixes.
20051110	Some more ARM dyntrans fine-tuning (e.g. some instruction
		combinations (cmps followed by conditional branch within the
		same page) and special cases for DPIs with regform when the
		shifter isn't used).
20051111	ARM dyntrans updates: O(n)->O(1) for just-mark-as-non-
		writable in the generic pc_to_pointers function, and some other
		minor hacks.
		Merging Cobalt and evbmips (Malta) ISA interrupt handling,
		and some minor fixes to allow Linux to accept harddisk irqs.
20051112	Minor device updates (pckbc, dec21143, lpt, ...), most
		importantly fixing the ALI M1543/M5229 so that harddisk irqs
		work with Linux/CATS.
20051113	Some more generalizations of the PCI subsystem.
		Finally took the time to add a hack for SCSI CDROM TOCs; this
		enables OpenBSD to use partition 'a' (as needed by the OpenBSD
		installer), and Windows NT's installer to get a bit further.
		Also fixing dev_wdc to allow Linux to detect ATAPI CDROMs.
		Continuing on the DEC 21143.
20051114	Minor ARM dyntrans tweaks; ARM cmps+branch optimization when
		comparing with 0, and generalizing the xchg instr. comb.
		Adding disassembly of ARM mrrc/mcrr and q{,d}{add,sub}.
20051115	Continuing on various PPC things (BATs, other address trans-
		lation things, various loads/stores, BeBox emulation, etc.).
		Beginning to work on PPC interrupt/exception support.
20051116	Factoring out some code which initializes legacy ISA devices
		from those machines that use them (bus_isa).
		Continuing on PPC interrupt/exception support.
20051117	Minor Malta fixes: RTC year offset = 80, disabling a speed hack
		which caused NetBSD to detect a too fast cpu, and adding a new
		hack to make Linux detect a faster cpu.
		Continuing on the Artesyn PM/PPC emulation mode.
		Adding an Algor emulation skeleton (P4032 and P5064);
		implementing some of the basics.
		Continuing on PPC emulation in general; usage of unimplemented
		SPRs is now easier to track, continuing on memory/exception
		related issues, etc.
20051118	More work on PPC emulation (tgpr0..3, exception handling,
		memory stuff, syscalls, etc.).
20051119	Changing the ARM dyntrans code to mostly use cpu->pc, and not
		necessarily use arm reg 15. Seems to work.
		Various PPC updates; continuing on the PReP emulation mode.
20051120	Adding a workaround/hack to dev_mc146818 to allow NetBSD/prep
		to detect the clock.
20051121	More cleanup of the PCI bus (memory and I/O bases, etc).
		Continuing on various PPC things (decrementer and timebase,
		WDCs on obio (on PReP) use irq 13, not 14/15).
20051122	Continuing on the CPC700 controller (interrupts etc) for PMPPC,
		and on PPC stuff in general.
		Finally! After some bug fixes to the virtual to physical addr
		translation, NetBSD/{prep,pmppc} 2.1 reach userland and are
		stable enough to be interacted with.
		More PCI updates; reverse-endian device access for PowerPC etc.
20051123	Generalizing the IEEE floating point subsystem (moving it out
		from src/cpus/cpu_mips_coproc.c into a new src/float_emul.c).
		Input via slave xterms was sometimes not really working; fixing
		this for ns16550, and a warning message is now displayed if
		multiple non-xterm consoles are active.
		Adding some PPC floating point support, etc.
		Various interrupt related updates (dev_wdc, _ns16550, _8259,
		and the isa32 common code in machine.c).
		NetBSD/prep can now be installed! :-) (Well, with some manual
		commands necessary before running sysinst.) Updating the
		documentation and various other things to reflect this.
20051124	Various minor documentation updates.
		Continuing the work on the DEC 21143 NIC.
20051125	LOTS of work on the 21143. Both OpenBSD and NetBSD work fine
		with it now, except that OpenBSD sometimes gives a time-out
		Minor documentation updates.

==============  RELEASE 0.3.7  ==============

1 dpavlin 20 Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.7
2     ================================================================
3 dpavlin 2
4     Copyright (C) 2003-2005 Anders Gavare.
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 20 MIPS processors are emulated using either a simple binary translation
13     layer ("recompilation"), which is used on Alpha and i386 hosts, or by
14     traditional interpretation (very very slow, but works on any host platform).
15 dpavlin 2
16 dpavlin 20 ARM and PowerPC processors are emulated using a newer dynamic translation
17     system. Performance is somewhere between traditional interpretation and
18     dynamic recompilation; however, the dynamic translation system used in
19     GXemul does NOT require platform-specific back-end code. In plain English,
20     this means that the dyntrans system works on any host platform.
22 dpavlin 12 I have verified that the following "guest" operating systems can run inside
23 dpavlin 20 the emulator. Instructions on how to install and run these can be found in
24     the documentation.
25 dpavlin 12
26 dpavlin 2 Guest operating system Emulated machine
27     ---------------------- ----------------
28 dpavlin 20 NetBSD/pmax 2.1 (and 1.6.2) DECstation 5000/200
29 dpavlin 2 OpenBSD/pmax 2.8-BETA DECstation 5000/200
30     Ultrix 4.2-4.5 DECstation 5000/200
31     Sprite demo harddisk image DECstation 5000/200
32     Debian GNU/Linux for DECstation DECstation 5000/200
33     Redhat Linux 7.1 for mips DECstation 5000/200
34     NetBSD/arc 1.6.2 Acer PICA-61
35     OpenBSD/arc 2.3 Acer PICA-61
36 dpavlin 20 NetBSD/hpcmips 2.1 NEC MobilePro 770, 780, 800, 880
37     NetBSD/cobalt 2.1 Cobalt
38     NetBSD/evbmips 2.1 Malta 5Kc/4Kc evaluation board
39     NetBSD/sgimips 2.1 SGI O2 ("IP32")
40     NetBSD/cats 2.1 CATS (ARM)
41     OpenBSD/cats 3.8 CATS (ARM)
42     NetBSD/prep 2.1 PReP (PowerPC Reference Platform)
43 dpavlin 2
44 dpavlin 12 Some of these guest operating systems are easier to install and run than
45 dpavlin 20 others. The best supported guest operating systems are probably NetBSD/pmax,
46     NetBSD/cats and OpenBSD/cats.
47 dpavlin 10
48 dpavlin 12 The emulator can also be used in other experiments; it does not have to run
49 dpavlin 20 entire guest operating systems. However, as GXemul is an instruction-level
50     emulator, it does not simulate things smaller than an instruction. What this
51     means is that pipe-line stalls, penalties caused by branch-prediction misses
52     or cache misses, and other micro-architectural effects are not simulated.
53 dpavlin 2
54 dpavlin 20 User-visible change between release and 0.3.7 include:
55 dpavlin 2
56 dpavlin 20 o) The experimental PowerPC emulation mode is now working well enough
57     to allow NetBSD/prep 2.1 to be installed and run inside the emulator.
58     It is not 100% stable, and it is not optimized for performance yet,
59     but hopefully enough for simple experiments.
60 dpavlin 2
61 dpavlin 20 o) I finally took the time to implement a DEC 21143 NIC; this brings
62     network connectivity to NetBSD/cats. (The userland "NAT"-like
63     networking layer is still a bit buggy, and does not work with
64     everything. However, NetBSD/cats can now be installed via ftp.)
65 dpavlin 2
66 dpavlin 20 o) CD-ROM images can now in some cases be detected as ATAPI CD-ROMs
67     instead of IDE harddisks. It works for at least NetBSD, OpenBSD,
68     and Linux on CATS, and NetBSD on hpcmips.
69 dpavlin 6
70 dpavlin 20 Internal (code related) changes include:
72     o) Cleanup of the PCI and ISA bus frameworks; in practice this means
73     that more code can be shared between different emulated machine
74     models than before, and that adding new machine types will become
75     easier.
77     o) Dyntrans updates; 32-bit PowerPC mostly, but also many performance
78     related updates for ARM.
80     There have also been lots of other changes, too many and small to mention here.
82 dpavlin 2 Files included in this release are:
84     BUGS A list of known bugs.
85     HISTORY Detailed revision history / changelog.
86     LICENSE Copyright message / license.
87     README Quick start instructions, for the impatient.
88     RELEASE This file.
89     TODO TODO notes.
90 dpavlin 4 configure, Makefile.skel sh and make scripts for building GXemul.
91 dpavlin 2 doc Documentation.
92     experiments Experimental code. (Usually not needed.)
93 dpavlin 4 src Source code.
94 dpavlin 2
95     To build the emulator, run the ./configure script, and then run make.
97     Building the emulator should work on most Unix-like systems. (One system which
98     is specifically known to NOT work is Ultrix/RISC inside the emulator; Ultrix
99     chokes on the configure script and the default cc in Ultrix doesn't work.)
101 dpavlin 4 Regarding files in the src/include/ directory: only some of these are written
102     by me, the rest are from other sources (such as NetBSD). The license text says
103 dpavlin 2 that "All advertising materials mentioning features or use of this software"
104     must display acknowledgements. Even though I do NOT feel I mention features or
105     use of the header files (the "software") in any advertising materials, I am
106     still very grateful for the fact that these people have made their files
107     available for re-use, so regardless of legal requirements, I guess thanking
108     them like this is in order:
110     This product includes software developed by the University of
111     California, Berkeley and its contributors.
113     This product includes software developed for the
114     NetBSD Project. See http://www.netbsd.org/ for
115     information about NetBSD.
117     This product includes software developed by Jonathan Stone for
118     the NetBSD Project.
120     This product includes software developed for the NetBSD Project
121     by Matthias Drochner.
123     This product includes software developed by the NetBSD
124     Foundation, Inc. and its contributors.
126     This product includes software developed by Christopher G. Demetriou.
127     [for the NetBSD Project.]
129     This product includes software developed by Adam Glass.
131     This product includes software developed by the PocketBSD project
132     and its contributors.
134     This product includes software developed by Peter Galbavy.
136     Carnegie Mellon University (multiple header files,
137     no specific advertisement text required)
139     This product includes software developed by Charles M. Hannum.
141     This product includes software developed under OpenBSD by Per Fogelström.
143     This product includes software developed by Per Fogelström.
145     This product includes software developed at Ludd, University of
146     Luleå, Sweden and its contributors.
148     This product includes software developed by Hellmuth Michaelis
149     and Joerg Wunsch
151     The font(s) in devices/fonts are Copyright (c) 1992, 1993, 1994
152     by Hellmuth Michaelis and Joerg Wunsch. ("This product includes software
153     developed by Hellmuth Michaelis and Joerg Wunsch", well, the font
154     is maybe not software, but still...)
156     impactsr-bsd.h is Copyright (C) 2004 by Stanislaw Skowronek.
158     This product includes software developed for the NetBSD Project by
159     Wasabi Systems, Inc. [by Simon Burge]
161     arcbios_other.h is Copyright (c) 1996 M. Warner Losh.
163     This product includes software developed by Marc Horowitz.
165 dpavlin 14 This product includes software developed by Brini.
167     This product includes software developed by Mark Brinicombe
168     for the NetBSD Project.
170 dpavlin 20 This product includes software developed by TooLs GmbH.
172     This product includes software developed by Manuel Bouyer.
174 dpavlin 12 Also, src/include/alpha_rpb.h requires the following:
176     Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
177     All rights reserved.
179     Author: Keith Bostic, Chris G. Demetriou
181     Permission to use, copy, modify and distribute this software and
182     its documentation is hereby granted, provided that both the copyright
183     notice and this permission notice appear in all copies of the
184     software, derivative works or modified versions, and any portions
185     thereof, and that both notices appear in supporting documentation.
187 dpavlin 2 See individual files for license details, if you plan to redistribute GXemul
188     or reuse code.
190 dpavlin 14 Thanks to (in no specific order) Joachim Buss, Juli Mallett, Juan Romero
191     Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and everyone
192     else who has provided me with feedback.
193 dpavlin 2
194     If you have found GXemul useful in some way, or feel like sending me comments
195     or feedback in general, then mail me at anders(at)gavare.se.

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