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Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.6.2 |
Release notes for Gavare's eXperimental Emulator (GXemul), 0.3.8 |
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Copyright (C) 2003-2005 Anders Gavare. |
Copyright (C) 2003-2006 Anders Gavare. |
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GXemul is an experimental instruction-level machine emulator. Several |
GXemul is an experimental instruction-level machine emulator. Several |
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hardware components are emulated well enough to let unmodified operating |
hardware components are emulated well enough to let unmodified operating |
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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. |
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The processor architecture best emulated by GXemul is MIPS, but other |
The documentation lists the machines and guest operating systems that can |
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architectures are also partially emulated. |
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. |
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I have verified that the following "guest" operating systems can run inside |
The user-visible changes between release 0.3.7 and 0.3.8 include: |
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the emulator: |
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Guest operating system Emulated machine |
o) The IQ80321 (Xscale) machine mode is now working well enough to |
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run NetBSD/evbarm 2.1. |
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NetBSD/pmax 2.0.2 (and 1.6.2) DECstation 5000/200 |
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OpenBSD/pmax 2.8-BETA DECstation 5000/200 |
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Ultrix 4.2-4.5 DECstation 5000/200 |
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Sprite demo harddisk image DECstation 5000/200 |
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Debian GNU/Linux for DECstation DECstation 5000/200 |
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Redhat Linux 7.1 for mips DECstation 5000/200 |
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NetBSD/arc 1.6.2 Acer PICA-61 |
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OpenBSD/arc 2.3 Acer PICA-61 |
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NetBSD/hpcmips 2.0.2 NEC MobilePro 770, 780, 800, 880 |
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NetBSD/cobalt 2.0.2 Cobalt |
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NetBSD/evbmips 2.0.2 Malta 5Kc/4Kc evaluation board |
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NetBSD/sgimips 2.0.2 SGI O2 ("IP32") |
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NetBSD/cats 2.0.2 CATS (ARM) |
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OpenBSD/cats 3.7 CATS (ARM) |
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(Most of these are MIPS-based machines, except the CATS, which is an |
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ARM-based machine.) |
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Some of these guest operating systems are easier to install and run than |
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others. The best supported mode is the DECstation 5000/200 emulation mode, |
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with NetBSD/pmax as the guest operating system. |
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A couple of other emulation modes exist. Some of these modes are almost |
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working well enough to run complete guest operating systems, but most are |
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just skeletons. The modes that work are listed in the documentation. |
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The emulator can also be used in other experiments; it does not have to run |
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entire guest operating systems. (However, GXemul does not simulate things |
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smaller than an instruction. What this means is that pipe-line stalls, |
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penalties caused by branch-prediction misses or cache misses, and other |
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micro-architectural effects are not simulated.) |
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The most imporant user-visible change between release 0.3.5 and 0.3.6 is: |
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x) The experimental ARM emulation mode is now working well enough |
o) Faster framebuffer output in some situations. |
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to install NetBSD/cats and OpenBSD/cats onto harddisk images. |
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There have also been lots of other small changes, too small to mention here. |
Source code related changes include: |
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The 0.3.6.1 and 0.3.6.2 releases contain bugfixes and some performance |
o) I've finally begun to reimplement the MIPS emulation mode using the |
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hacks. |
new dyntrans system. It will be quite some time until it can run |
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anything, but things are moving in the right direction. |
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o) Some changes to the concepts of input-only, output-only, and |
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input-output consoles. |
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o) Some more clean-up of PCI bus concepts. |
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o) Machine definitions have been moved out of src/machines.c, and into |
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individual files in a new sub-directory (src/machines/). |
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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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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. |
To build the emulator, run the ./configure script, and then run make. This |
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should work on most Unix-like systems. |
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Building the emulator should work on most Unix-like systems. (One system which |
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is specifically known to NOT work is Ultrix/RISC inside the emulator; Ultrix |
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chokes on the configure script and the default cc in Ultrix doesn't work.) |
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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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This product includes software developed by Mark Brinicombe |
This product includes software developed by Mark Brinicombe |
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for the NetBSD Project. |
for the NetBSD Project. |
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This product includes software developed by TooLs GmbH. |
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This product includes software developed by Manuel Bouyer. |
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This product includes software developed by the Alice Group. |
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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, Juli Mallett, Juan Romero |
Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli Mallett, |
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Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and everyone |
Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander Yurchenko, and |
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else who has provided me with feedback. |
everyone else who has provided me with feedback. |
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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. |