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Modified
Mon Oct 8 16:22:32 2007 UTC
(16 years, 6 months ago)
by
dpavlin
File length: 1486 byte(s)
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previous 24
++ 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 ==============
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Added
Mon Oct 8 16:19:56 2007 UTC
(16 years, 6 months ago)
by
dpavlin
File length: 1309 byte(s)
++ 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 ==============
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