/[gxemul]/trunk/RELEASE
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 30 by dpavlin, Mon Oct 8 16:20:40 2007 UTC revision 42 by dpavlin, Mon Oct 8 16:22:32 2007 UTC
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1  Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.2  Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.6
2  ================================================================  ================================================================
3    
4  Copyright (C) 2003-2006  Anders Gavare.  Copyright (C) 2003-2007  Anders Gavare.
5    
6    
7  GXemul is an experimental instruction-level machine emulator. Several  GXemul is an experimental instruction-level machine emulator. Several
# Line 9  emulation modes are available. In some m Line 9  emulation modes are available. In some m
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    Processors (ARM, MIPS, PowerPC, and SuperH) are emulated using dynamic
13    translation. Unlike some other dynamically translating emulators, GXemul
14    does not need to generate native code, only a "runnable intermediate
15    representation", and will thus run on any host architecture.
16    
17  The documentation lists the machines and guest operating systems that can  The documentation lists the machines and guest operating systems that can
18  be regarded as "working" in GXemul. The best working guest operating  be regarded as "working" in GXemul. The best working guest operating
19  systems are probably NetBSD/pmax, NetBSD/cats, and OpenBSD/cats.  systems are probably NetBSD/pmax and NetBSD/cats.
   
   
 Changes between release 0.4.1 and 0.4.2 include, among other things:  
   
     o)  The NetWinder emulation mode now works well enough to let  
         NetBSD/netwinder run from a disk image.  
20    
         (NetBSD/netwinder has to be installed manually, though, because  
         there is no installation ramdisk kernel. The GXemul documentation  
         has an example of how to install NetBSD/netwinder using an emulated  
         NetBSD/pmax machine.)  
21    
22      o)  Algorithmics P5064 emulation works well enough to let NetBSD/algor  The changes between release 0.4.5.1 and 0.4.6 include, among other things:
         run from a disk image. (Similar to NetBSD/netwinder, it has to  
         be installed manually, using another emulated machine.)  
23    
24      o)  PCI configuration register writes can now be handled, which allows      o)  NetBSD/pmppc can now run in the emulator (with root-on-nfs), on
25          NetBSD/Malta (evbmips) 3.0.1 and NetBSD/cobalt 3.0.1 to run from          an emulated Artesyn PM/PPC board.
         PCI IDE harddisk images. (Previously, only NetBSD 2.1 worked for  
         the Malta and Cobalt emulation modes.)  
26    
27      o)  Some performance increases:      o)  An instruction combination has been implemented for the idle loop
28            used by NetBSD/arm (cats, netwinder, and iq80321). In plain English,
29            this means that if the guest OS inside the emulator is not using
30            any CPU, the emulator should not use much CPU on the host either.
31    
32          The virtual translation table update routine has been simplified      o)  Some minor SuperH emulation speed improvements.
         to work the same way for 32-bit and 64-bit emulation, and this  
         apparently results in a speedup for all 64-bit modes.  
33    
34          For 32-bit MIPS, some more instruction combinations have been added.      o)  General code cleanup: Non-working (skeleton) emulation modes have
35            been removed, to make it easier to maintain the source code in
36            the long run, and many unused/legacy constructs have been removed.
37    
38  Please read the HISTORY files for more details.  Please read the HISTORY file for more details.
39    
40    
41  Files included in this release are:  Files included in this release are:
# Line 138  them like this is in order: Line 132  them like this is in order:
132    
133      This product includes software developed by Ichiro FUKUHARA.      This product includes software developed by Ichiro FUKUHARA.
134    
135        This product includes software developed by Marcus Comstedt.
136    
137        This product includes software developed by Bill Paul.
138    
139        This product includes software developed by Nivas Madhur.
140    
141  Also, src/include/alpha_rpb.h requires the following:  Also, src/include/alpha_rpb.h requires the following:
142    
143      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
# Line 155  See individual files for license details Line 155  See individual files for license details
155  or reuse code.  or reuse code.
156    
157    
 Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli Mallett,  
 Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and  
 everyone else who has provided me with feedback.  
   
158  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
159  or feedback in general, then mail me at anders(at)gavare.se.  or feedback in general, then mail me at anders(At)gavare.se.
160    
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