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Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.8 |
Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.0 |
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================================================================ |
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Copyright (C) 2003-2006 Anders Gavare. |
Copyright (C) 2003-2006 Anders Gavare. |
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be regarded as "working" in GXemul. The best supported guest operating |
be regarded as "working" in GXemul. The best supported guest operating |
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systems are probably NetBSD/pmax, NetBSD/cats, and OpenBSD/cats. |
systems are probably NetBSD/pmax, NetBSD/cats, and OpenBSD/cats. |
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The user-visible changes between release 0.3.7 and 0.3.8 include: |
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o) The IQ80321 (Xscale) machine mode is now working well enough to |
The most important change between release 0.3.8 and 0.4.0 is: |
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run NetBSD/evbarm 2.1. |
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o) Faster framebuffer output in some situations. |
o) The emulation of MIPS processors has been completely rewritten; |
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it now uses the same portable dynamic translation system as the |
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ARM and PowerPC emulation modes. |
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Source code related changes include: |
On Alpha and i386 hosts (and AMD64 hosts running in 32-bit mode), |
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GXemul previously used translation into native code. This release |
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will perform worse than 0.3.8 on those host architectures. |
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o) I've finally begun to reimplement the MIPS emulation mode using the |
On all other hosts (including AMD64 running in native 64-bit mode), |
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new dyntrans system. It will be quite some time until it can run |
0.4.0 is likely to be faster than 0.3.8, when emulating MIPS, at |
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anything, but things are moving in the right direction. |
least for R3000 emulation. |
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o) Some changes to the concepts of input-only, output-only, and |
I think that in the long term, moving towards full portability like |
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input-output consoles. |
this is a good idea. |
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o) Some more clean-up of PCI bus concepts. |
(Since the MIPS emulation mode has been rewritten from scratch, and I have |
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not really had much time over for debugging, there are most likely new |
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bugs in 0.4.0 that were not present in 0.3.8. However, I feel that it is |
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better to make a quick release now than to wait even longer.) |
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o) Machine definitions have been moved out of src/machines.c, and into |
There have also been many other changes, including, but not limited to: |
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individual files in a new sub-directory (src/machines/). |
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o) The "test machine" functionality is more well-defined than before, |
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and some tutorial-like demos have been added. These could be useful |
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e.g. in operating system construction courses. |
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o) NetBSD/sgimips 3.0 works now. This is most likely due to the rewrite |
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of the MIPS emulation mode. Previous releases of GXemul only worked |
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with NetBSD/sgimips 2.1. |
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o) I have begun implementing rudimentary support for GDB remote serial |
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protocol connections. This means that you can run e.g. the Data |
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Display Debugger, and connect it to a GXemul instance. |
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No advanced GDB functionality is working yet, but starting and |
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stopping the emulated machine and single-stepping should work. |
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Please read the HISTORY files for more details. |
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There have also been lots of other changes, too many and small to mention here. |
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Files included in this release are: |
Files included in this release are: |
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BUGS A list of known bugs. |
BUGS List of known bugs for this release. |
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HISTORY Detailed revision history / changelog. |
HISTORY Detailed revision history / changelog. |
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LICENSE Copyright message / license. |
LICENSE Copyright message / license. |
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README Quick start instructions, for the impatient. |
README Quick start instructions, for the impatient. |
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RELEASE This file. |
RELEASE This file. |
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TODO TODO notes. |
TODO TODO notes. |
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configure, Makefile.skel sh and make scripts for building GXemul. |
configure, Makefile.skel sh and make scripts for building GXemul. |
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demos Tutorial-like demos of testmachine functionality. |
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doc Documentation. |
doc Documentation. |
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experiments Experimental code. (Usually not needed.) |
experiments Experimental code. (Usually not needed.) |
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src Source code. |
src Source code. |
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To build the emulator, run the ./configure script, and then run make. This |
To build the emulator, run the configure script, and then run make. This |
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should work on most Unix-like systems. |
should work on most Unix-like systems. |
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Regarding files in the src/include/ directory: only some of these are written |
Regarding files in the src/include/ directory: only some of these are written |
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by me, the rest are from other sources (such as NetBSD). The license text says |
by me, the rest are from other sources (such as NetBSD). The license text says |
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that "All advertising materials mentioning features or use of this software" |
that "All advertising materials mentioning features or use of this software" |
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This product includes software developed by the Alice Group. |
This product includes software developed by the Alice Group. |
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This product includes software developed by Ichiro FUKUHARA. |
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Also, src/include/alpha_rpb.h requires the following: |
Also, src/include/alpha_rpb.h requires the following: |
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Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. |
Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. |
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See individual files for license details, if you plan to redistribute GXemul |
See individual files for license details, if you plan to redistribute GXemul |
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or reuse code. |
or reuse code. |
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Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli Mallett, |
Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli Mallett, |
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Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and |
Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and |
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everyone else who has provided me with feedback. |
everyone else who has provided me with feedback. |
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Special thanks to Alec Voropay for testing this release with Linux |
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kernels, and on Cygwin, and also thanks to Ondrej Palkovsky for testing |
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with HelenOS. |
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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 |
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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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