/[gxemul]/trunk/RELEASE
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revision 30 by dpavlin, Mon Oct 8 16:20:40 2007 UTC revision 38 by dpavlin, Mon Oct 8 16:21:53 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), 0.4.5
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, 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 0.4.4.1 and 0.4.5 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)  Initial support for "disk overlays" has been implemented. This
25          NetBSD/Malta (evbmips) 3.0.1 and NetBSD/cobalt 3.0.1 to run from          enables e.g. simple roll-back of emulated disk contents to a
26          PCI IDE harddisk images. (Previously, only NetBSD 2.1 worked for          previous state.
         the Malta and Cobalt emulation modes.)  
27    
28      o)  Some performance increases:      o)  Dyntrans bug fixes; code translations on physical addresses that
29            were offset a multiple of 128 MB from each other could either
30            cause weird bugs, or translation leaks (leading to unnecessary
31            dyntrans cache overflows).
32    
33          The virtual translation table update routine has been simplified      o)  Some cleanup: The GDB debugging stub support, some dummy machine
34          to work the same way for 32-bit and 64-bit emulation, and this          modes (TS7200, Walnut, PB1000, and Meshcube), and some dummy or
35          apparently results in a speedup for all 64-bit modes.          experimental CPUs (RCA180x and Transputer) have been removed, to
36            make the emulator slightly more maintainable.
37    
38          For 32-bit MIPS, some more instruction combinations have been added.  Please read the HISTORY file for more details.
   
 Please read the HISTORY files 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  Also, src/include/alpha_rpb.h requires the following:  Also, src/include/alpha_rpb.h requires the following:
138    
139      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 151  See individual files for license details
151  or reuse code.  or reuse code.
152    
153    
 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.  
   
154  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
155  or feedback in general, then mail me at anders(at)gavare.se.  or feedback in general, then mail me at anders(At)gavare.se.
156    
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