/[gxemul]/trunk/RELEASE
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revision 12 by dpavlin, Mon Oct 8 16:18:38 2007 UTC revision 18 by dpavlin, Mon Oct 8 16:19:11 2007 UTC
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1  Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.5  Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.6.2
2  ================================================================  ==================================================================
3    
4  Copyright (C) 2003-2005  Anders Gavare.  Copyright (C) 2003-2005  Anders Gavare.
5    
6    
7  GXemul is an experimental instruction-level machine emulator. It can be used to  GXemul is an experimental instruction-level machine emulator. Several
8  run binary code for MIPS-based machines, regardless of host platform. Several  emulation modes are available. In some modes, processors and surrounding
 emulation modes are available. For some modes, processors and surrounding  
9  hardware components are emulated well enough to let unmodified operating  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.  systems (e.g. NetBSD) run as if they were running on a real machine.
11    
12  (Non-MIPS emulation modes are also under development, but so far none of those  The processor architecture best emulated by GXemul is MIPS, but other
13  modes has reached the completeness required to run unmodified operating  architectures are also partially emulated.
 systems.)  
14    
15  I have verified that the following "guest" operating systems can run inside  I have verified that the following "guest" operating systems can run inside
16  the emulator:  the emulator:
# Line 31  the emulator: Line 29  the emulator:
29      NetBSD/cobalt 2.0.2                Cobalt      NetBSD/cobalt 2.0.2                Cobalt
30      NetBSD/evbmips 2.0.2               Malta 5Kc/4Kc evaluation board      NetBSD/evbmips 2.0.2               Malta 5Kc/4Kc evaluation board
31      NetBSD/sgimips 2.0.2               SGI O2 ("IP32")      NetBSD/sgimips 2.0.2               SGI O2 ("IP32")
32        NetBSD/cats 2.0.2                  CATS (ARM)
33        OpenBSD/cats 3.7                   CATS (ARM)
34    
35    (Most of these are MIPS-based machines, except the CATS, which is an
36    ARM-based machine.)
37    
38  Some of these guest operating systems are easier to install and run than  Some of these guest operating systems are easier to install and run than
39  others. The best supported mode is the DECstation 5000/200 emulation mode, with  others. The best supported mode is the DECstation 5000/200 emulation mode,
40  NetBSD/pmax as the guest operating system.  with NetBSD/pmax as the guest operating system.
41    
42  A couple of other emulation modes exist. Some of these modes are almost working  A couple of other emulation modes exist. Some of these modes are almost
43  well enough to run complete guest operating systems, but most are just  working well enough to run complete guest operating systems, but most are
44  skeletons. The modes that work are listed in the documentation.  just skeletons. The modes that work are listed in the documentation.
45    
46  The emulator can also be used in other experiments; it does not have to run  The emulator can also be used in other experiments; it does not have to run
47  entire guest operating systems. (However, GXemul does not simulate things  entire guest operating systems. (However, GXemul does not simulate things
# Line 46  smaller than an instruction. What this m Line 49  smaller than an instruction. What this m
49  penalties caused by branch-prediction misses or cache misses, and other  penalties caused by branch-prediction misses or cache misses, and other
50  micro-architectural effects are not simulated.)  micro-architectural effects are not simulated.)
51    
52  The user-visible changes between release 0.3.4 and 0.3.5 are minor, and  The most imporant user-visible change between release 0.3.5 and 0.3.6 is:
 can be summarized as follows:  
   
         o)  Updates to the (old) binary translation subsystem, resulting  
             in minor speed improvements.  
53    
54          o)  64-bit MIPS dmult/dmultu has been fixed.      x)  The experimental ARM emulation mode is now working well enough
55            to install NetBSD/cats and OpenBSD/cats onto harddisk images.
56    
57          o)  slt* instructions for 64-bit MIPS were incorrectly implemented  There have also been lots of other small changes, too small to mention here.
             in the i386 backend. This has been fixed.  
58    
59  There have been many other bug fixes and updates, most of which are not  The 0.3.6.1 and 0.3.6.2 releases contain bugfixes and some performance
60  visible.  hacks.
61    
62  Files included in this release are:  Files included in this release are:
63    
# Line 143  them like this is in order: Line 142  them like this is in order:
142    
143      This product includes software developed by Marc Horowitz.      This product includes software developed by Marc Horowitz.
144    
145        This product includes software developed by Brini.
146    
147        This product includes software developed by Mark Brinicombe
148        for the NetBSD Project.
149    
150  Also, src/include/alpha_rpb.h requires the following:  Also, src/include/alpha_rpb.h requires the following:
151    
152      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
# Line 156  Also, src/include/alpha_rpb.h requires t Line 160  Also, src/include/alpha_rpb.h requires t
160      software, derivative works or modified versions, and any portions      software, derivative works or modified versions, and any portions
161      thereof, and that both notices appear in supporting documentation.      thereof, and that both notices appear in supporting documentation.
162    
   
163  See individual files for license details, if you plan to redistribute GXemul  See individual files for license details, if you plan to redistribute GXemul
164  or reuse code.  or reuse code.
165    
166  Thanks to (in no specific order) Joachim Buss, Juli Mallett, Juan RP, Alec  Thanks to (in no specific order) Joachim Buss, Juli Mallett, Juan Romero
167  Voropay, Göran Weinholt, Alexander Yurchenko, and everyone else who has  Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and everyone
168  provided me with feedback.  else who has provided me with feedback.
169    
170  If you have found GXemul useful in some way, or feel like sending me comments  If you have found GXemul useful in some way, or feel like sending me comments
171  or feedback in general, then mail me at anders(at)gavare.se.  or feedback in general, then mail me at anders(at)gavare.se.

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