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Mon Oct 8 16:19:56 2007 UTC (13 years, 2 months ago) by dpavlin
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1256 2006/06/23 20:43:44 debug Exp $
20060219	Various minor updates. Removing the old MIPS16 skeleton code,
		because it will need to be rewritten for dyntrans anyway.
20060220-22	Removing the non-working dyntrans backend support.
		Continuing on the 64-bit dyntrans virtual memory generalization.
20060223	More work on the 64-bit vm generalization.
20060225	Beginning on MIPS dyntrans load/store instructions.
		Minor PPC updates (64-bit load/store, etc).
		Fixes for the variable-instruction-length framework, some
		minor AVR updates (a simple Hello World program works!).
		Beginning on a skeleton for automatically generating documen-
		tation (for devices etc.).
20060226	PPC updates (adding some more 64-bit instructions, etc).
		AVR updates (more instructions).
		FINALLY found and fixed the zs bug, making NetBSD/macppc
		accept the serial console.
20060301	Adding more AVR instructions.
20060304	Continuing on AVR-related stuff. Beginning on a framework for
		cycle-accurate device emulation. Adding an experimental "PAL
		TV" device (just a dummy so far).
20060305	Adding more AVR instructions.
		Adding a dummy epcom serial controller (for TS7200 emulation).
20060310	Removing the emul() command from configuration files, so only
		net() and machine() are supported.
		Minor progress on the MIPS dyntrans rewrite.
20060311	Continuing on the MIPS dyntrans rewrite (adding more
		instructions, etc).
20060315	Adding more instructions (sllv, srav, srlv, bgtz[l], blez[l],
		beql, bnel, slti[u], various loads and stores).
20060316	Removing the ALWAYS_SIGNEXTEND_32 option, since it was rarely
		used.
		Adding more MIPS dyntrans instructions, and fixing bugs.
20060318	Implementing fast loads/stores for MIPS dyntrans (big/little
		endian, 32-bit and 64-bit modes).
20060320	Making MIPS dyntrans the default configure option; use
		"--enable-oldmips" to use the old bintrans system.
		Adding MIPS dyntrans dmult[u]; minor updates.
20060322	Continuing... adding some more instructions.
		Adding a simple skeleton for demangling C++ "_ZN" symbols.
20060323	Moving src/debugger.c into a new directory (src/debugger/).
20060324	Fixing the hack used to load PPC ELFs (useful for relocated
		Linux/ppc kernels), and adding a dummy G3 machine mode.
20060325-26	Beginning to experiment with GDB remote serial protocol
		connections; adding a -G command line option for selecting
		which TCP port to listen to.
20060330	Beginning a major cleanup to replace things like "0x%016llx"
		with more correct "0x%016"PRIx64, etc.
		Continuing on the GDB remote serial protocol support.
20060331	More cleanup, and some minor GDB remote progress.
20060402	Adding a hack to the configure script, to allow compilation
		on systems that lack PRIx64 etc.
20060406	Removing the temporary FreeBSD/arm hack in dev_ns16550.c and
		replacing it with a better fix from Olivier Houchard.
20060407	A remote debugger (gdb or ddd) can now start and stop the
		emulator using the GDB remote serial protocol, and registers
		and memory can be read. MIPS only for now.
20060408	More GDB progress: single-stepping also works, and also adding
		support for ARM, PowerPC, and Alpha targets.
		Continuing on the delay-slot-across-page-boundary issue.
20060412	Minor update: beginning to add support for the SPARC target
		to the remote GDB functionality.
20060414	Various MIPS updates: adding more instructions for dyntrans
		(eret, add), and making some exceptions work. Fixing a bug
		in dmult[u].
		Implementing the first SPARC instructions (sethi, or).
20060415	Adding "magic trap" instructions so that PROM calls can be
		software emulated in MIPS dyntrans.
		Adding more MIPS dyntrans instructions (ddiv, dadd) and
		fixing another bug in dmult.
20060416	More MIPS dyntrans progress: adding [d]addi, movn, movz, dsllv,
		rfi, an ugly hack for supporting R2000/R3000 style faked caches,
		preliminary interrupt support, and various other updates and
		bugfixes.
20060417	Adding more SPARC instructions (add, sub, sll[x], sra[x],
		srl[x]), and useful SPARC header definitions.
		Adding the first (trivial) x86/AMD64 dyntrans instructions (nop,
		cli/sti, stc/clc, std/cld, simple mov, inc ax). Various other
		x86 updates related to variable instruction length stuff.
		Adding unaligned loads/stores to the MIPS dyntrans mode (but
		still using the pre-dyntrans (slow) imlementation).
20060419	Fixing a MIPS dyntrans exception-in-delay-slot bug.
		Removing the old "show opcode statistics" functionality, since
		it wasn't really useful and isn't implemented for dyntrans.
		Single-stepping (or running with instruction trace) now looks
		ok with dyntrans with delay-slot architectures.
20060420	Minor hacks (removing the -B command line option when compiled
		for non-bintrans, and some other very minor updates).
		Adding (slow) MIPS dyntrans load-linked/store-conditional.
20060422	Applying fixes for bugs discovered by Nils Weller's nwcc
		(static DEC memmap => now per machine, and adding an extern
		keyword in cpu_arm_instr.c).
		Finally found one of the MIPS dyntrans bugs that I've been
		looking for (copy/paste spelling error BIG vs LITTLE endian in
		cpu_mips_instr_loadstore.c for 16-bit fast stores).
		FINALLY found the major MIPS dyntrans bug: slti vs sltiu
		signed/unsigned code in cpu_mips_instr.c. :-)
		Adding more MIPS dyntrans instructions (lwc1, swc1, bgezal[l],
		ctc1, tlt[u], tge[u], tne, beginning on rdhwr).
		NetBSD/hpcmips can now reach userland when using dyntrans :-)
		Adding some more x86 dyntrans instructions.
		Finally removed the old Alpha-specific virtual memory code,
		and replaced it with the generic 64-bit version.
		Beginning to add disassembly support for SPECIAL3 MIPS opcodes.
20060423	Continuing on the delay-slot-across-page-boundary issue;
		adding an end_of_page2 ic slot (like I had planned before, but
		had removed for some reason).
		Adding a quick-and-dirty fallback to legacy coprocessor 1
		code (i.e. skipping dyntrans implementation for now).
		NetBSD/hpcmips and NetBSD/pmax (when running on an emulated
		R4400) can now be installed and run. :-)  (Many bugs left
		to fix, though.)
		Adding more MIPS dyntrans instructions: madd[u], msub[u].
		Cleaning up the SPECIAL2 vs R5900/TX79/C790 "MMI" opcode
		maps somewhat (disassembly and dyntrans instruction decoding).
20060424	Adding an isa_revision field to mips_cpu_types.h, and making
		sure that SPECIAL3 opcodes cause Reserved Instruction
		exceptions on MIPS32/64 revisions lower than 2.
		Adding the SPARC 'ba', 'call', 'jmpl/retl', 'and', and 'xor'
		instructions.
20060425	Removing the -m command line option ("run at most x 
		instructions") and -T ("single_step_on_bad_addr"), because
		they never worked correctly with dyntrans anyway.
		Freshening up the man page.
20060428	Adding more MIPS dyntrans instructions: bltzal[l], idle.
		Enabling MIPS dyntrans compare interrupts.
20060429	FINALLY found the weird dyntrans bug, causing NetBSD etc. to
		behave strangely: some floating point code (conditional
		coprocessor branches) could not be reused from the old
		non-dyntrans code. The "quick-and-dirty fallback" only appeared
		to work. Fixing by implementing bc1* for MIPS dyntrans.
		More MIPS instructions: [d]sub, sdc1, ldc1, dmtc1, dmfc1, cfc0.
		Freshening up MIPS floating point disassembly appearance.
20060430	Continuing on C790/R5900/TX79 disassembly; implementing 128-bit
		"por" and "pextlw".
20060504	Disabling -u (userland emulation) unless compiled as unstable
		development version.
		Beginning on freshening up the testmachine include files,
		to make it easier to reuse those files (placing them in
		src/include/testmachine/), and beginning on a set of "demos"
		or "tutorials" for the testmachine functionality.
		Minor updates to the MIPS GDB remote protocol stub.
		Refreshing doc/experiments.html and gdb_remote.html.
		Enabling Alpha emulation in the stable release configuration,
		even though no guest OSes for Alpha can run yet.
20060505	Adding a generic 'settings' object, which will contain
		references to settable variables (which will later be possible
		to access using the debugger).
20060506	Updating dev_disk and corresponding demo/documentation (and
		switching from SCSI to IDE disk types, so it actually works
		with current test machines :-).
20060510	Adding a -D_LARGEFILE_SOURCE hack for 64-bit Linux hosts,
		so that fseeko() doesn't give a warning.
		Updating the section about how dyntrans works (the "runnable
		IR") in doc/intro.html.
		Instruction updates (some x64=1 checks, some more R5900
		dyntrans stuff: better mul/mult separation from MIPS32/64,
		adding ei and di).
		Updating MIPS cpuregs.h to a newer one (from NetBSD).
		Adding more MIPS dyntrans instructions: deret, ehb.
20060514	Adding disassembly and beginning implementation of SPARC wr
		and wrpr instructions.
20060515	Adding a SUN SPARC machine mode, with dummy SS20 and Ultra1
		machines. Adding the 32-bit "rd psr" instruction.
20060517	Disassembly support for the general SPARC rd instruction.
		Partial implementation of the cmp (subcc) instruction.
		Some other minor updates (making sure that R5900 processors
		start up with the EIE bit enabled, otherwise Linux/playstation2
		receives no interrupts).
20060519	Minor MIPS updates/cleanups.
20060521	Moving the MeshCube machine into evbmips; this seems to work
		reasonably well with a snapshot of a NetBSD MeshCube kernel.
		Cleanup/fix of MIPS config0 register initialization.
20060529	Minor MIPS fixes, including a sign-extension fix to the
		unaligned load/store code, which makes NetBSD/pmax on R3000
		work better with dyntrans. (Ultrix and Linux/DECstation still
		don't work, though.)
20060530	Minor updates to the Alpha machine mode: adding an AlphaBook
		mode, an LCA bus (forwarding accesses to an ISA bus), etc.
20060531	Applying a bugfix for the MIPS dyntrans sc[d] instruction from
		Ondrej Palkovsky. (Many thanks.)
20060601	Minifix to allow ARM immediate msr instruction to not give
		an error for some valid values.
		More Alpha updates.
20060602	Some minor Alpha updates.
20060603	Adding the Alpha cmpbge instruction. NetBSD/alpha prints its
		first boot messages :-) on an emulated Alphabook 1.
20060612	Minor updates; adding a dev_ether.h include file for the
		testmachine ether device. Continuing the hunt for the dyntrans
		bug which makes Linux and Ultrix on DECstation behave
		strangely... FINALLY found it! It seems to be related to
		invalidation of the translation cache, on tlbw{r,i}. There
		also seems to be some remaining interrupt-related problems.
20060614	Correcting the implementation of ldc1/sdc1 for MIPS dyntrans
		(so that it uses 16 32-bit registers if the FR bit in the
		status register is not set).
20060616	REMOVING BINTRANS COMPLETELY!
		Removing the old MIPS interpretation mode.
		Removing the MFHILO_DELAY and instruction delay stuff, because
		they wouldn't work with dyntrans anyway.
20060617	Some documentation updates (adding "NetBSD-archive" to some
		URLs, and new Debian/DECstation installation screenshots).
		Removing the "tracenull" and "enable-caches" configure options.
		Improving MIPS dyntrans performance somewhat (only invalidate
		translations if necessary, on writes to the entryhi register,
		instead of doing it for all cop0 writes).
20060618	More cleanup after the removal of the old MIPS emulation.
		Trying to fix the MIPS dyntrans performance bugs/bottlenecks;
		only semi-successful so far (for R3000).
20060620	Minor update to allow clean compilation again on Tru64/Alpha.
20060622	MIPS cleanup and fixes (removing the pc_last stuff, which
		doesn't make sense with dyntrans anyway, and fixing a cross-
		page-delay-slot-with-exception case in end_of_page).
		Removing the old max_random_cycles_per_chunk stuff, and the
		concept of cycles vs instructions for MIPS emulation.
		FINALLY found and fixed the bug which caused NetBSD/pmax
		clocks to behave strangely (it was a load to the zero register,
		which was treated as a NOP; now it is treated as a load to a
		dummy scratch register).
20060623	Increasing the dyntrans chunk size back to
		N_SAFE_DYNTRANS_LIMIT, instead of N_SAFE_DYNTRANS_LIMIT/2.
		Preparing for a quick release, even though there are known
		bugs, and performance for non-R3000 MIPS emulation is very
		poor. :-/
		Reverting to half the dyntrans chunk size again, because
		NetBSD/cats seemed less stable with full size chunks. :(
		NetBSD/sgimips 3.0 can now run :-)  (With release 0.3.8, only
		NetBSD/sgimips 2.1 worked, not 3.0.)

==============  RELEASE 0.4.0  ==============


1 <html><head><title>Gavare's eXperimental Emulator:&nbsp;&nbsp;&nbsp;Configuration files</title>
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7 <b>Gavare's eXperimental Emulator:</b></font><br>
8 <font color="#000000" size="6"><b>Configuration files</b>
9 </font></td></tr></table></td></tr></table><p>
10
11 <!--
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13 $Id: configfiles.html,v 1.25 2006/06/22 13:22:40 debug Exp $
14
15 Copyright (C) 2003-2006 Anders Gavare. All rights reserved.
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18 modification, are permitted provided that the following conditions are met:
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41
42 <a href="./">Back to the index</a>
43
44 <p><br>
45 <h2>Configuration files</h2>
46
47 <p>
48 <ul>
49 <li><a href="#config">Configuration file syntax</a>
50 <li><a href="#minimal">A minimal example</a>
51 <li><a href="#multihost">Network across multiple hosts</a>
52 </ul>
53
54
55
56
57 <p><br>
58 <a name="config"></a>
59 <h3>Configuration file syntax:</h3>
60
61 Configuration files are simple text files. I don't have time to write
62 down a formal syntax right now, so I hope that conveying the syntax
63 through an example is good enough:
64
65 <p>
66 <table border="0"><tr><td width="40">&nbsp;</td><td>
67 <pre>
68 <font color="#2020cf">! This is an example configuration file for GXemul.
69 ! Anything following an exclamation mark (and also the exclamation
70 ! mark itself) is ignored.
71 !
72 ! Almost all settings are optional.</font>
73
74 <b>name(<font color="#ff003f">"my test emul"</font>)</b> <font color="#2020cf">! Optional name of this emulation</font>
75
76 <font color="#2020cf">! This creates an ethernet network:</font>
77 <b>net(</b>
78 <b>ipv4net(<font color="#ff003f">"10.2.0.0"</font>)</b> <font color="#2020cf">! The default is 10.0.0.0/8, but</font>
79 <b>ipv4len(16)</b> <font color="#2020cf">! it can be overridden like this.</font>
80 <font color="#2020cf">! local_port(12345)</font>
81 <font color="#2020cf">! add_remote("localhost:12346")</font>
82 <b>)</b>
83
84 <font color="#2020cf">! This creates a machine:</font>
85 <b>machine(</b>
86 <b>name(<font color="#ff003f">"My test machine"</font>)</b>
87
88 <font color="#2020cf">! serial_nr(123) ! Useful when emulating multiple machines</font>
89 <font color="#2020cf"> ! on multiple hosts, and they need to have</font>
90 <font color="#2020cf"> ! unique MAC addresses, etc.</font>
91
92 <b>type(<font color="#ff003f">"dec"</font>)</b> <font color="#2020cf">! This is actually not optional</font>
93 <b>subtype(<font color="#ff003f">"5000/200"</font>)</b>
94
95 <b>cpu(<font color="#ff003f">"R3000"</font>)</b> <font color="#2020cf">! Normally set implicitly to a reasonable</font>
96 <font color="#2020cf">! value, depending on <i>type</i> and <i>subtype</i></font>
97
98 <font color="#2020cf">! ncpus(4)</font>
99 <font color="#2020cf">! use_random_bootstrap_cpu(yes)</font>
100
101 <b>memory(128)</b> <font color="#2020cf">! 128 MB memory. This overrides</font>
102 <font color="#2020cf">! the default amount of memory for</font>
103 <font color="#2020cf">! this machine type.</font>
104
105 <font color="#2020cf">! random_mem_contents(yes)</font>
106
107 <font color="#2020cf">! prom_emulation(no)</font>
108
109 <font color="#2020cf">! byte_order(big) ! Normally set implicitly (because</font>
110 <font color="#2020cf">! of <i>type</i> and <i>subtype</i>, or decided</font>
111 <font color="#2020cf">! from the file loaded with <i>load</i></font>
112
113 <b>load(<font color="#ff003f">"netbsd-INSTALL"</font>)</b>
114 <b>bootname(<font color="#ff003f">"netbsd"</font>)</b>
115 <b>bootarg(<font color="#ff003f">"-a"</font>)</b>
116
117 <font color="#2020cf">! n_gfx_cards(2) ! for DECstation dual/tripple-head</font>
118 <font color="#2020cf">! emulated_hz(10000000) ! for fixing the emulated clock speed</font>
119
120 <font color="#2020cf">! add_x11_display("otherbox:0") ! for dual/tripple-head etc</font>
121 <font color="#2020cf">! add_x11_display("thisbox:0")</font>
122
123 <font color="#2020cf">{
124 Devices can be added like this:
125
126 device("8250 addr=0x18000800 addr_mult=4")
127
128 The name comes first, followed by optional parameters.
129 Remember to use 0x for hexadecimal values.
130 }</font>
131
132 <font color="#2020cf">! force_netboot(yes)</font>
133 <font color="#2020cf">! start_paused(yes)</font>
134
135 <b>disk(<font color="#ff003f">"nbsd.img"</font>)</b>
136 <b>disk(<font color="#ff003f">"6c:cdrom.iso"</font>)</b>
137
138 <b>use_x11(yes)</b>
139 <b>x11_scaledown(2)</b>
140
141 <font color="#2020cf">! slow_serial_interrupts_hack_for_linux(yes)</font>
142
143 <font color="#2020cf">{
144 Long comments spanning multiple lines should be surrounded
145 with tuborg parentheses.
146
147 { Long comments can be nested. }
148 <!--
149 <b><i>... TODO ...
150 -i display each instruction as it is executed
151 -J disable some speed tricks
152 -m nr run at most nr instructions (on any cpu)
153 -N display nr of instructions/second average, at regular intervals
154 -p pc add a breakpoint (remember to use the '0x' prefix for hex!)
155 -r register dumps before every instruction
156 -t show function trace tree
157 </i></b>-->
158 }</font>
159
160 <b>)</b>
161
162 <font color="#2020cf">! Multiple machine definitions are allowed.</font>
163 <b>machine(</b>
164 <b>name(<font color="#ff003f">"another machine"</font>)</b>
165 <b>type(<font color="#ff003f">"hpcmips"</font>)</b>
166 <b>subtype(<font color="#ff003f">"be300"</font>)</b>
167
168 <i>...</i>
169 <b>)</b>
170 </pre>
171 </td></tr></table>
172
173 <p>
174 Starting the emulator with a configuration file is as simple as
175
176 <pre>
177 $ <b>gxemul @myconfig</b>
178 </pre>
179
180 if <b>myconfig</b> is the name of the configuration file.
181
182
183
184
185
186
187
188
189 <p><br>
190 <a name="minimal"></a>
191 <h3>A minimal example:</h3>
192
193 Here is an example of what a minimal configuration file might look like:
194
195 <p><table border="0"><tr><td width="40">&nbsp;</td><td><pre>
196 <b>machine(</b>
197 <b>subtype(<font color="#ff003f">"3max"</font>)</b>
198 <b>load(<font color="#ff003f">"netbsd-pmax-INSTALL-2.0"</font>)</b>
199 <b>)</b>
200 </pre>
201 </td></tr></table>
202
203 <p>For most machine types, <tt>type</tt> is needed. If only
204 <tt>subtype</tt> is specified, and the name is unique (i.e. there is only
205 one major type which has such a subtype), then the <tt>type</tt> can be
206 omitted. Also, adding a <tt>net</tt> is quite useful, especially for
207 netbooting kernels.
208
209
210
211
212
213
214 <p><br>
215 <a name="multihost"></a>
216 <h3>Network across multiple hosts:</h3>
217
218 <p>It is possible to add multiple <tt>machine</tt> entries into one
219 configuration file. This will cause the emulator to try to run all those
220 machines simultaneously. An alternative (and better) solution for doing
221 this, which gives higher reliability (stability) and performance, is to
222 have one configuration file per emulated machine.
223
224 <p><table border="0" width="100%"><tr><td width="40">&nbsp;</td>
225 <td><pre>
226 <font color="#2020cf">! Configuration file for a
227 ! "client" machine, netbooting
228 ! of another machine.</font>
229
230 <b>net(</b>
231 <b>local_port(15000)</b>
232 <b>add_remote(<font color="#ff003f">"localhost:15001"</font>)</b>
233 <b>)</b>
234 <b>machine(</b>
235 <b>name(<font color="#ff003f">"client machine"</font>)</b>
236 <b>serial_nr(1)</b> <font color="#2020cf">! 10.0.0.1</font>
237
238 <b>type(<font color="#ff003f">"sgi"</font>)</b>
239 <b>subtype(<font color="#ff003f">"o2"</font>)</b>
240 <b>load(<font color="#ff003f">"netbsd-GENERIC32_IP3x.gz"</font>)</b>
241 <b>)</b>
242 </pre></td><td width="20">&nbsp;</td><td><pre>
243 <font color="#2020cf">! Configuration file for the
244 ! "server" machine.</font>
245
246 <b>net(</b>
247 <b>local_port(15001)</b>
248 <b>add_remote(<font color="#ff003f">"localhost:15000"</font>)</b>
249 <b>)</b>
250 <b>machine(</b>
251 <b>name(<font color="#ff003f">"nfs server"</font>)</b>
252 <b>serial_nr(2)</b> <font color="#2020cf">! 10.0.0.2</font>
253
254 <b>type(<font color="#ff003f">"dec"</font>)</b>
255 <b>subtype(<font color="#ff003f">"3max"</font>)</b>
256 <b>disk(<font color="#ff003f">"nbsd_pmax.img"</font>)</b>
257 <b>)</b>
258 </pre></td><td width="20">&nbsp;</td></tr></table>
259
260 <p>This example creates a network using the default settings (10.0.0.0/8),
261 but it also allows the network to be connected to other emulator
262 instances. <tt>local_port(15000)</tt> means that anything coming in to
263 UDP port 15000 on the host is added to the network. All ethernet packets
264 on the network are also sent out to all other connected machines (those
265 added with <tt>add_remote()</tt>).
266
267 <p>As you can see in the example, this is a configuration file for
268 netbooting a NetBSD/sgimips diskless machine, with a NetBSD/pmax machine
269 acting as the nfs server. Note that the nfs server has ports 15000 and
270 15001 reversed!
271
272 <p>"<tt>localhost</tt>" can be changed to the Internet hostname of a
273 remote machine, to run the simulation across a physical network.
274
275 <p><font color="#ff0000"><b>NOTE:</b> There is no error checking or
276 security checking of any kind. All UDP packets arriving at the input port
277 are added to the emulated ethernet. This is not very good of course; use
278 this feature at your own risk.</font>
279
280
281
282
283 </p>
284
285 </body>
286 </html>

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