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++ trunk/HISTORY (local)
$Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $
20070501 Continuing a little on m88k disassembly (control registers,
more instructions).
Adding a dummy mvme88k machine mode.
20070502 Re-adding MIPS load/store alignment exceptions.
20070503 Implementing more of the M88K disassembly code.
20070504 Adding disassembly of some more M88K load/store instructions.
Implementing some relatively simple M88K instructions (br.n,
xor[.u] imm, and[.u] imm).
20070505 Implementing M88K three-register and, or, xor, and jmp[.n],
bsr[.n] including function call trace stuff.
Applying a patch from Bruce M. Simpson which implements the
SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in
the yamon PROM emulation.
20070506 Implementing M88K bb0[.n] and bb1[.n], and skeletons for
ldcr and stcr (although no control regs are implemented yet).
20070509 Found and fixed the bug which caused Linux for QEMU_MIPS to
stop working in 0.4.5.1: It was a faulty change to the MIPS
'sc' and 'scd' instructions I made while going through gcc -W
warnings on 20070428.
20070510 Updating the Linux/QEMU_MIPS section in guestoses.html to
use mips-test-0.2.tar.gz instead of 0.1.
A big thank you to Miod Vallat for sending me M88K manuals.
Implementing more M88K instructions (addu, subu, div[u], mulu,
ext[u], clr, set, cmp).
20070511 Fixing bugs in the M88K "and" and "and.u" instructions (found
by comparing against the manual).
Implementing more M88K instructions (mask[.u], mak, bcnd (auto-
generated)) and some more control register details.
Cleanup: Removing the experimental AVR emulation mode and
corresponding devices; AVR emulation wasn't really meaningful.
Implementing autogeneration of most M88K loads/stores. The
rectangle drawing demo (with -O0) for M88K runs :-)
Beginning on M88K exception handling.
More M88K instructions: tb0, tb1, rte, sub, jsr[.n].
Adding some skeleton MVME PROM ("BUG") emulation.
20070512 Fixing a bug in the M88K cmp instruction.
Adding the M88K lda (scaled register) instruction.
Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores.
Removing the unused tick_hz stuff from the machine struct.
Implementing the M88K xmem instruction. OpenBSD/mvme88k gets
far enough to display the Copyright banner :-)
Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1.
Adding a dev_mvme187, for MVME187-specific devices/registers.
OpenBSD/mvme88k prints more boot messages. :)
20070515 Continuing on MVME187 emulation (adding more devices, beginning
on the CMMUs, etc).
Adding the M88K and.c, xor.c, and or.c instructions, and making
sure that mul, div, etc cause exceptions if executed when SFD1
is disabled.
20070517 Continuing on M88K and MVME187 emulation in general; moving
the CMMU registers to the CPU struct, separating dev_pcc2 from
dev_mvme187, and beginning on memory_m88k.c (BATC and PATC).
Fixing a bug in 64-bit (32-bit pairs) M88K fast stores.
Implementing the clock part of dev_mk48txx.
Implementing the M88K fstcr and xcr instructions.
Implementing m88k_cpu_tlbdump().
Beginning on the implementation of a separate address space
for M88K .usr loads/stores.
20070520 Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK
Dnard, and Zaurus machine modes.
Experimenting with dyntrans to_be_translated read-ahead. It
seems to give a very small performance increase for MIPS
emulation, but a large performance degradation for SuperH. Hm.
20070522 Disabling correct SuperH ITLB emulation; it does not seem to be
necessary in order to let SH4 guest OSes run, and it slows down
userspace code.
Implementing "samepage" branches for SuperH emulation, and some
other minor speed hacks.
20070525 Continuing on M88K memory-related stuff: exceptions, memory
transaction register contents, etc.
Implementing the M88K subu.ci instruction.
Removing the non-working (skeleton) Iyonix machine mode.
OpenBSD/mvme88k reaches userland :-), starts executing
/sbin/init's instructions, and issues a few syscalls, before
crashing.
20070526 Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects
the correct time-of-day.
Implementing a generic IRQ controller for the test machines
(dev_irqc), similar to a proposed patch from Petr Stepan.
Experimenting some more with translation read-ahead.
Adding an "expect" script for automated OpenBSD/landisk
install regression/performance tests.
20070527 Adding a dummy mmEye (SH3) machine mode skeleton.
FINALLY found the strange M88K bug I have been hunting: I had
not emulated the SNIP value for exceptions occurring in
branch delay slots correctly.
Implementing correct exceptions for 64-bit M88K loads/stores.
Address to symbol lookups are now disabled when M88K is
running in usermode (because usermode addresses don't have
anything to do with supervisor addresses).
20070531 Removing the mmEye machine mode skeleton.
20070604 Some minor code cleanup.
20070605 Moving src/useremul.c into a subdir (src/useremul/), and
cleaning up some more legacy constructs.
Adding -Wstrict-aliasing and -fstrict-aliasing detection to
the configure script.
20070606 Adding a check for broken GCC on Solaris to the configure
script. (GCC 3.4.3 on Solaris cannot handle static variables
which are initialized to 0 or NULL. :-/)
Removing the old (non-working) ARC emulation modes: NEC RD94,
R94, R96, and R98, and the last traces of Olivetti M700 and
Deskstation Tyne.
Removing the non-working skeleton WDSC device (dev_wdsc).
20070607 Thinking about how to use the host's cc + ld at runtime to
generate native code. (See experiments/native_cc_ld_test.i
for an example.)
20070608 Adding a program counter sampling timer, which could be useful
for native code generation experiments.
The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR
should always be set, to allow a 5000/200 PROM to boot.
20070609 Moving out breakpoint details from the machine struct into
a helper struct, and removing the limit on max nr of
breakpoints.
20070610 Moving out tick functions into a helper struct as well (which
also gets rid of the max limit).
20070612 FINALLY figured out why Debian/DECstation stopped working when
translation read-ahead was enabled: in src/memory_rw.c, the
call to invalidate_code_translation was made also if the
memory access was an instruction load (if the page was mapped
as writable); it shouldn't be called in that case.
20070613 Implementing some more MIPS32/64 revision 2 instructions: di,
ei, ext, dext, dextm, dextu, and ins.
20070614 Implementing an instruction combination for the NetBSD/arm
idle loop (making the host not use any cpu if NetBSD/arm
inside the emulator is not using any cpu).
Increasing the nr of ARM VPH entries from 128 to 384.
20070615 Removing the ENABLE_arch stuff from the configure script, so
that all included architectures are included in both release
and development builds.
Moving memory related helper functions from misc.c to memory.c.
Adding preliminary instructions for netbooting NetBSD/pmppc to
guestoses.html; it doesn't work yet, there are weird timeouts.
Beginning a total rewrite of the userland emulation modes
(removing all emulation modes, beginning from scratch with
NetBSD/MIPS and FreeBSD/Alpha only).
20070616 After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was
only cleared for the last segment when transmitting, not all
segments), NetBSD/pmppc boots with root-on-nfs without the
timeouts. Updating guestoses.html.
Removing the skeleton PSP (Playstation Portable) mode.
Moving X11-related stuff in the machine struct into a helper
struct.
Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION
macro (which prints a meaningful error message).
Adding a COMMENT to each machine and device (for automagic
.index comment generation).
Doing regression testing for the next release.
============== RELEASE 0.4.6 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1515 2007/04/14 05:39:46 debug Exp $ 20070324 Adding a "--debug" option to the configure script, to disable optimizations in unstable development builds. Moving out SCSI-specific stuff from diskimage.c into a new diskimage_scsicmd.c. Applying Hĺvard Eidnes' patch for SCSICDROM_READ_DISKINFO and SCSICDROM_READ_TRACKINFO. (Not really tested yet.) Implementing disk image "overlays" (to allow simple roll-back to previous disk state). Adding a 'V' disk flag for this, and updating the man page and misc.html. 20070325 Stability fix to cpu_dyntrans.c, when multiple physical pages share the same initial table entry. (The ppp == NULL check should be physpage_ofs == 0.) Bug found by analysing GXemul against a version patched for Godson. Fixing a second occurance of the same problem (also in cpu_dyntrans.c). Fixing a MAJOR physical page leak in cpu_dyntrans.c; pages weren't _added_ to the set of translated pages, they _replaced_ all previous pages. It's amazing that this bug has been able to live for this long. (Triggered when emulating >128MB RAM.) 20070326 Removing the GDB debugging stub support; it was too hackish and ugly. 20070328 Moving around some native code generation skeleton code. 20070329 The -lm check in the configure script now also checks for sin() in addition to sqrt(). (Thanks to Nigel Horne for noticing that sqrt was not enough on Fedora Core 6.) (Not verified yet.) 20070330 Fixing an indexing bug in dev_sh4.c, found by using gcc version 4.3.0 20070323. 20070331 Some more experimentation with native code generation. 20070404 Attempting to fix some more SH4 SCIF interrupt bugs; rewriting the SH interrupt assertion/deassertion code somewhat. 20070410 Splitting src/file.c into separate files in src/file/. Cleanup: Removing the dummy TS7200, Walnut, PB1000, and Meshcube emulation modes, and dev_epcom and dev_au1x00. Removing the experimental CHIP8/RCA180x code; it wasn't really working much lately, anyway. It was fun while it lasted. Also removing the experimental Transputer CPU support. 20070412 Moving the section about how the dynamic translation system works from intro.html to a separate translation.html file. Minor SH fixes; attempting to get OpenBSD/landisk to run without randomly bugging out, but no success yet. 20070413 SH SCI (serial bit interface) should now work together with a (new) RS5C313 clock device (for Landisk emulation). 20070414 Moving Redhat/MIPS down from supported to experimental, in guestoses.html. Preparing for a new release; doing some regression testing etc. ============== RELEASE 0.4.5 ==============
++ trunk/HISTORY (local)
$Id: HISTORY,v 1.1121 2006/02/18 21:03:08 debug Exp $
20051126 Cobalt and PReP now work with the 21143 NIC.
Continuing on Alpha dyntrans things.
Fixing some more left-shift-by-24 to unsigned.
20051127 Working on OpenFirmware emulation; major cleanup/redesign.
Progress on MacPPC emulation: NetBSD detects two CPUs (when
running with -n 2), framebuffer output (for text) works.
Adding quick-hack Bandit PCI controller and "gc" interrupt
controller for MacPPC.
20051128 Changing from a Bandit to a Uni-North controller for macppc.
Continuing on OpenFirmware and MacPPC emulation in general
(obio controller, and wdc attached to the obio seems to work).
20051129 More work on MacPPC emulation (adding a dummy ADB controller).
Continuing the PCI bus cleanup (endianness and tag composition)
and rewriting all PCI controllers' access functions.
20051130 Various minor PPC dyntrans optimizations.
Manually inlining some parts of the framebuffer redraw routine.
Slowly beginning the conversion of the old MIPS emulation into
dyntrans (but this will take quite some time to get right).
Generalizing quick_pc_to_pointers.
20051201 Documentation update (David Muse has made available a kernel
which simplifies Debian/DECstation installation).
Continuing on the ADB bus controller.
20051202 Beginning a rewrite of the Zilog serial controller (dev_zs).
20051203 Continuing on the zs rewrite (now called dev_z8530); conversion
to devinit style.
Reworking some of the input-only vs output-only vs input-output
details of src/console.c, better warning messages, and adding
a debug dump.
Removing the concept of "device state"; it wasn't really used.
Changing some debug output (-vv should now be used to show all
details about devices and busses; not shown during normal
startup anymore).
Beginning on some SPARC instruction disassembly support.
20051204 Minor PPC updates (WALNUT skeleton stuff).
Continuing on the MIPS dyntrans rewrite.
More progress on the ADB controller (a keyboard is "detected"
by NetBSD and OpenBSD).
Downgrading OpenBSD/arc as a guest OS from "working" to
"almost working" in the documentation.
Progress on Algor emulation ("v3" PCI controller).
20051205 Minor updates.
20051207 Sorting devices according to address; this reduces complexity
of device lookups from O(n) to O(log n) in memory_rw (but no
real performance increase (yet) in experiments).
20051210 Beginning the work on native dyntrans backends (by making a
simple skeleton; so far only for Alpha hosts).
20051211 Some very minor SPARC updates.
20051215 Fixing a bug in the MIPS mul (note: not mult) instruction,
so it also works with non-64-bit emulation. (Thanks to Alec
Voropay for noticing the problem.)
20051216 More work on the fake/empty/simple/skeleton/whatever backend;
performance doesn't increase, so this isn't really worth it,
but it was probably worth it to prepare for a real backend
later.
20051219 More instr call statistics gathering and analysis stuff.
20051220 Another fix for MIPS 'mul'. Also converting mul and {d,}cl{o,z}
to dyntrans.
memory_ppc.c syntax error fix (noticed by Peter Valchev).
Beginning to move out machines from src/machine.c into
individual files in src/machines (in a way similar to the
autodev system for devices).
20051222 Updating the documentation regarding NetBSD/pmax 3.0.
20051223 - " - NetBSD/cats 3.0.
20051225 - " - NetBSD/hpcmips 3.0.
20051226 Continuing on the machine registry redesign.
Adding support for ARM rrx (33-bit rotate).
Fixing some signed/unsigned issues (exposed by gcc -W).
20051227 Fixing the bug which prevented a NetBSD/prep 3.0 install kernel
from starting (triggered when an mtmsr was the last instruction
on a page). Unfortunately not enough to get the kernel to run
as well as the 2.1 kernels did.
20051230 Some dyntrans refactoring.
20051231 Continuing on the machine registry redesign.
20060101-10 Continuing... moving more machines. Moving MD interrupt stuff
from machine.c into a new src/machines/interrupts.c.
20060114 Adding various mvmeppc machine skeletons.
20060115 Continuing on mvme* stuff. NetBSD/mvmeppc prints boot messages
(for MVME1600) and reaches the root device prompt, but no
specific hardware devices are emulated yet.
20060116 Minor updates to the mvme1600 emulation mode; the Eagle PCI bus
seems to work without much modification, and a 21143 can be
detected, interrupts might work (but untested so far).
Adding a fake MK48Txx (mkclock) device, for NetBSD/mvmeppc.
20060121 Adding an aux control register for ARM. (A BIG thank you to
Olivier Houchard for tracking down this bug.)
20060122 Adding more ARM instructions (smulXY), and dev_iq80321_7seg.
20060124 Adding disassembly of more ARM instructions (mia*, mra/mar),
and some semi-bogus XScale and i80321 registers.
20060201-02 Various minor updates. Moving the last machines out of
machine.c.
20060204 Adding a -c command line option, for running debugger commands
before the simulation starts, but after all files have been
loaded.
Minor iq80321-related updates.
20060209 Minor hacks (DEVINIT macro, etc).
Preparing for the generalization of the 64-bit dyntrans address
translation subsystem.
20060216 Adding ARM ldrd (double-register load).
20060217 Continuing on various ARM-related stuff.
20060218 More progress on the ATA/wdc emulation for NetBSD/iq80321.
NetBSD/evbarm can now be installed :-) Updating the docs, etc.
Continuing on Algor emulation.
============== RELEASE 0.3.8 ==============
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