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forked off sandpoint machine with mpc40x device from pmppc to isolate changes
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1632 2007/09/11 21:46:35 debug Exp $ 20070616 Implementing the MIPS32/64 revision 2 "ror" instruction. 20070617 Adding a struct for each physpage which keeps track of which ranges within that page (base offset, length) that are continuously translatable. When running with native code generation enabled (-b), a range is added after each read- ahead loop. Experimenting with using the physical program counter sample data (implemented 20070608) together with the "translatable range" information, to figure out which physical address ranges would be worth translating to native code (if the number of samples falling within a range is above a certain threshold). 20070618 Adding automagic building of .index comment files for src/file/, src/promemul/, src src/useremul/ as well. Adding a "has been translated" bit to the ranges, so that only not-yet-translated ranges will be sampled. 20070619 Moving src/cpu.c and src/memory_rw.c into src/cpus/, src/device.c into src/devices/, and src/machine.c into src/machines/. Creating a skeleton cc/ld native backend module; beginning on the function which will detect cc command line, etc. 20070620 Continuing on the native code generation infrastructure. 20070621 Moving src/x11.c and src/console.c into a new src/console/ subdir (for everything that is console or framebuffer related). Moving src/symbol*.c into a new src/symbol/, which should contain anything that is symbol handling related. 20070624 Making the program counter sampling threshold a "settings variable" (sampling_threshold), i.e. it can now be changed during runtime. Switching the RELEASE notes format from plain text to HTML. If the TMPDIR environment variable is set, it is used instead of "/tmp" for temporary files. Continuing on the cc/ld backend: simple .c code is generated, the compiler and linker are called, etc. Adding detection of host architecture to the configure script (again), and adding icache invalidation support (only implemented for Alpha hosts so far). 20070625 Simplifying the program counter sampling mechanism. 20070626 Removing the cc/ld native code generation stuff, program counter sampling, etc; it would not have worked well in the general case. 20070627 Removing everything related to native code generation. 20070629 Removing the (practically unusable) support for multiple emulations. (The single emulation allowed now still supports multiple simultaneous machines, as before.) Beginning on PCCTWO and M88K interrupts. 20070723 Adding a dummy skeleton for emulation of M32R processors. 20070901 Fixing a warning found by "gcc version 4.3.0 20070817 (experimental)" on amd64. 20070905 Removing some more traces of the old "multiple emulations" code. Also looking in /usr/local/include and /usr/local/lib for X11 libs, when running configure. 20070909 Minor updates to the guest OS install instructions, in preparation for the NetBSD 4.0 release. 20070918 More testing of NetBSD 4.0 RC1.
++ 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 1.1539 2007/05/01 04:03:51 debug Exp $ 20070415 Landisk PCLOCK should be 33.33 MHz, not 50 MHz. (This makes the clock run at correct speed.) FINALLY found and fixed the bug which caused OpenBSD/landisk to randomly bug out: an &-sign was missing in the special case handling of FPSCR in the 'LDS.L @Rm+,FPSCR' instruction. Adding similar special case handling for 'LDC.L @Rm+,SR' (calling sh_update_sr() instead of just loading). Implementing the 'FCNVSD FPUL,DRn' and 'FCNVDS DRm,FPUL' SuperH instructions. The 'LDC Rm,SR' instruction now immediately breaks out of the dyntrans loop if an interrupt is to be triggered. 20070416 In memory_rw.c, if mapping a page as writable, make sure to invalidate code translations even if the data access was a read. Minor SuperH updates. 20070418 Removing the dummy M68K emulation mode. Minor SH update (turning unnecessary sts_mach_rn, sts_macl_rn, and sts_pr_rn instruction handlers into mov_rm_rn). 20070419 Beginning to add a skeleton for an M88K mode: Adding a hack to allow OpenBSD/m88k a.out binaries to be loaded, and disassembly of a few simple 88K instructions. Commenting out the 'LDC Rm,SR' fix from a few days ago, because it made Linux/dreamcast bug out. Adding a hack to dev_sh4.c (an extra translation cache invalidation), which allows OpenBSD/landisk to boot ok after an install. Upgrading the Landisk machine mode to stable, updating documentation, etc. 20070420 Experimenting with adding a PCI controller (pcic) to dev_sh4. Adding a dummy Realtek 8139C+ skeleton device (dev_rtl8139c). Implementing the first M88K instructions (br, or[.u] imm), and adding disassembly of some more instructions. 20070421 Continuing a little on dev_rtl8139c. 20070422 Implementing the 9346 EEPROM "read" command for dev_rtl8139c. Finally found and fixed an old bug in the log n symbol search (it sometimes missed symbols). Debug trace (-i, -t etc) should now show more symbols. :-) 20070423 Continuing a little on M88K disassembly. 20070428 Fixing a memset arg order bug in src/net/net.c (thanks to Nigel Horne for noticing the bug). Applying parts of a patch from Carl van Schaik to clear out bottom bits of MIPS addresses more correctly, when using large page sizes, and doing some other minor cleanup/refactoring. Fixing a couple of warnings given by gcc with the -W option (a few more warnings than just plain -Wall). Reducing SuperH dyntrans physical address space from 64-bit to 32-bit (since SH5/SH64 isn't imlemented yet anyway). Adding address-to-symbol annotation to a few more instructions in the SuperH instruction trace output. Beginning regression testing for the next release. Reverting the value of SCIF_DELAYED_TX_VALUE from 1 to 2, because OpenBSD/landisk may otherwise hang randomly. 20070429 The ugly hack/workaround to get OpenBSD/landisk booting without crashing does NOT work anymore (with the April 21 snapshot of OpenBSD/landisk). Strangely enough, removing the hack completely causes OpenBSD/landisk to work (!). More regression testing (re-testing everything SuperH-related, and some other things). Cobalt interrupts were actually broken; fixing by commenting out the DEC21143s in the Cobalt machine. 20070430 More regression testing. 20070501 Updating the OpenBSD/landisk install instructions to use 4.1 instead of the current snapshot. GAAAH! OpenBSD/landisk 4.1 _needs_ the ugly hack/workaround; reintroducing it again. (The 4.1 kernel is actually from 2007-03-11.) Simplifying the NetBSD/evbarm install instructions a bit. More regression testing. ============== RELEASE 0.4.5.1 ==============
++ 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 1.1497 2007/03/18 03:41:36 debug Exp $ 20070224 Minor update to the initialization of the ns16550 in machine_walnut.c, to allow that machine type to boot with the new interrupt system (although it is still a dummy machine). Adding a wdc at 0x14000000 to machine_landisk.c, and fixing the SCIF serial interrupts of the SH4 cpu enough to get NetBSD/landisk booting from a disk image :-) Adding a preliminary install instruction skeleton to guestoses.html. 20070306 Adding SH-IPL+G PROM emulation, and also passing the "end" symbol in r5 on bootup, for Landisk emulation. This is enough to get OpenBSD/landisk to install :) Adding a preliminary install instruction skeleton to the documentation. SuperH emulation is still shaky, though :-/ 20070307 Fixed a strangeness in memory_sh.c (read/write was never returned for any page). (Unknown whether this fixes any actual problems, though.) 20070308 dev_ram.c fix: invalidate code translations on writes to RAM, emulated as separate devices. Linux/dreamcast gets further in the boot process than before, but still bugs out in userland. Fixing bugs in the "stc.l gbr,@-rN" and "ldc.l @rN+,gbr" SuperH instructions (they should NOT check the MD bit), allowing the Linux/dreamcast Live CD to reach userland correctly :-) 20070310 Changing the cpu name "Alpha" in src/useremul.c to "21364" to unbreak userland syscall emulation of FreeBSD/Alpha binaries. 20070314 Applying a patch from Michael Yaroslavtsev which fixes the previous Linux lib64 patch to the configure script. 20070315 Adding a (dummy) sun4v machine type, and SPARC T1 cpu type. 20070316 Creating a new directory, src/disk, and moving diskimage.c to it. Separating out bootblock loading stuff from emul.c into new files in src/disk. Adding some more SPARC registers. 20070318 Preparing/testing for a minirelease, 0.4.4.1. ============== RELEASE 0.4.4.1 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1480 2007/02/19 01:34:42 debug Exp $ 20061029 Changing usleep(1) calls in the debugger to usleep(10000) 20061107 Adding a new disk image option (-d o...) which sets the ISO9660 filesystem base offset; also making some other hacks to allow NetBSD/dreamcast and homebrew demos/games to boot directly from a filesystem image. Moving Dreamcast-specific stuff in the documentation to its own page (dreamcast.html). Adding a border to the Dreamcast PVR framebuffer. 20061108 Adding a -T command line option (again?), for halting the emulator on unimplemented memory accesses. 20061109 Continuing on various SH4 and Dreamcast related things. The emulator should now halt on more unimplemented device accesses, instead of just printing a warning, forcing me to actually implement missing stuff :) 20061111 Continuing on SH4 and Dreamcast stuff. Adding a bogus Landisk (SH4) machine mode. 20061112 Implementing some parts of the Dreamcast GDROM device. With some ugly hacks, NetBSD can (barely) mount an ISO image. 20061113 NetBSD/dreamcast now starts booting from the Live CD image, but crashes randomly quite early on in the boot process. 20061122 Beginning on a skeleton interrupt.h and interrupt.c for the new interrupt subsystem. 20061124 Continuing on the new interrupt system; taking the first steps to attempt to connect CPUs (SuperH and MIPS) and devices (dev_cons and SH4 timer interrupts) to it. Many things will probably break from now on. 20061125 Converting dev_ns16550, dev_8253 to the new interrupt system. Attempting to begin to convert the ISA bus. 20061130 Incorporating a patch from Brian Foley for the configure script, which checks for X11 libs in /usr/X11R6/lib64 (which is used on some Linux systems). 20061227 Adding a note in the man page about booting from Dreamcast CDROM images (i.e. that no external kernel is needed). 20061229 Continuing on the interrupt system rewrite: beginning to convert more devices, adding abort() calls for legacy interrupt system calls so that everything now _has_ to be rewritten! Almost all machine modes are now completely broken. 20061230 More progress on removing old interrupt code, mostly related to the ISA bus + devices, the LCA bus (on AlphaBook1), and the Footbridge bus (for CATS). And some minor PCI stuff. Connecting the ARM cpu to the new interrupt system. The CATS, NetWinder, and QEMU_MIPS machine modes now work with the new interrupt system :) 20061231 Connecting PowerPC CPUs to the new interrupt system. Making PReP machines (IBM 6050) work again. Beginning to convert the GT PCI controller (for e.g. Malta and Cobalt emulation). Some things work, but not everything. Updating Copyright notices for 2007. 20070101 Converting dev_kn02 from legacy style to devinit; the 3max machine mode now works with the new interrupt system :-] 20070105 Beginning to convert the SGI O2 machine to the new interrupt system; finally converting O2 (IP32) devices to devinit, etc. 20070106 Continuing on the interrupt system redesign/rewrite; KN01 (PMAX), KN230, and Dreamcast ASIC interrupts should work again, moving out stuff from machine.h and devices.h into the corresponding devices, beginning the rewrite of i80321 interrupts, etc. 20070107 Beginning on the rewrite of Eagle interrupt stuff (PReP, etc). 20070117 Beginning the rewrite of Algor (V3) interrupts (finally changing dev_v3 into devinit style). 20070118 Removing the "bus" registry concept from machine.h, because it was practically meaningless. Continuing on the rewrite of Algor V3 ISA interrupts. 20070121 More work on Algor interrupts; they are now working again, well enough to run NetBSD/algor. :-) 20070122 Converting VR41xx (HPCmips) interrupts. NetBSD/hpcmips can be installed using the new interrupt system :-) 20070123 Making the testmips mode work with the new interrupt system. 20070127 Beginning to convert DEC5800 devices to devinit, and to the new interrupt system. Converting Playstation 2 devices to devinit, and converting the interrupt system. Also fixing a severe bug: the interrupt mask register on Playstation 2 is bitwise _toggled_ on writes. 20070128 Removing the dummy NetGear machine mode and the 8250 device (which was only used by the NetGear machine). Beginning to convert the MacPPC GC (Grand Central) interrupt controller to the new interrupt system. Converting Jazz interrupts (PICA61 etc.) to the new interrupt system. NetBSD/arc can be installed again :-) Fixing the JAZZ timer (hardcoding it at 100 Hz, works with NetBSD and it is better than a completely dummy timer as it was before). Converting dev_mp to the new interrupt system, although I haven't had time to actually test it yet. Completely removing src/machines/interrupts.c, cpu_interrupt and cpu_interrupt_ack in src/cpu.c, and src/include/machine_interrupts.h! Adding fatal error messages + abort() in the few places that are left to fix. Converting dev_z8530 to the new interrupt system. FINALLY removing the md_int struct completely from the machine struct. SH4 fixes (adding a PADDR invalidation in the ITLB replacement code in memory_sh.c); the NetBSD/dreamcast LiveCD now runs all the way to the login prompt, and can be interacted with :-) Converting the CPC700 controller (PCI and interrupt controller for PM/PPC) to the new interrupt system. 20070129 Fixing MACE ISA interrupts (SGI IP32 emulation). Both NetBSD/ sgimips' and OpenBSD/sgi's ramdisk kernels can now be interacted with again. 20070130 Moving out the MIPS multi_lw and _sw instruction combinations so that they are auto-generated at compile time instead. 20070131 Adding detection of amd64/x86_64 hosts in the configure script, for doing initial experiments (again :-) with native code generation. Adding a -k command line option to set the size of the dyntrans cache, and a -B command line option to disable native code generation, even if GXemul was compiled with support for native code generation for the specific host CPU architecture. 20070201 Experimenting with a skeleton for native code generation. Changing the default behaviour, so that native code generation is now disabled by default, and has to be enabled by using -b on the command line. 20070202 Continuing the native code generation experiments. Making PCI interrupts work for Footbridge again. 20070203 More native code generation experiments. Removing most of the native code generation experimental code, it does not make sense to include any quick hacks like this. Minor cleanup/removal of some more legacy MIPS interrupt code. 20070204 Making i80321 interrupts work again (for NetBSD/evbarm etc.), and fixing the timer at 100 Hz. 20070206 Experimenting with removing the wdc interrupt slowness hack. 20070207 Lowering the number of dyntrans TLB entries for MIPS from 192 to 128, resulting in a minor speed improvement. Minor optimization to the code invalidation routine in cpu_dyntrans.c. 20070208 Increasing (experimentally) the nr of dyntrans instructions per loop from 60 to 120. 20070210 Commenting out (experimentally) the dyntrans_device_danger detection in memory_rw.c. Changing the testmips and baremips machines to use a revision 2 MIPS64 CPU by default, instead of revision 1. Removing the dummy i960, IA64, x86, AVR32, and HP PA-RISC files, the PC bios emulation, and the Olivetti M700 (ARC) and db64360 emulation modes. 20070211 Adding an "mp" demo to the demos directory, which tests the SMP functionality of the testmips machine. Fixing PReP interrupts some more. NetBSD/prep now boots again. 20070216 Adding a "nop workaround" for booting Mach/PMAX to the documentation; thanks to Artur Bujdoso for the values. Converting more of the MacPPC interrupt stuff to the new system. Beginning to convert BeBox interrupts to the new system. PPC603e should NOT have the PPC_NO_DEC flag! Removing it. Correcting BeBox clock speed (it was set to 100 in the NetBSD bootinfo block, but should be 33000000/4), allowing NetBSD to start without using the (incorrect) PPC_NO_DEC hack. 20070217 Implementing (slow) AltiVec vector loads and stores, allowing NetBSD/macppc to finally boot using the GENERIC kernel :-) Updating the documentation with install instructions for NetBSD/macppc. 20070218-19 Regression testing for the release. ============== RELEASE 0.4.4 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1421 2006/11/06 05:32:37 debug Exp $ 20060816 Adding a framework for emulated/virtual timers (src/timer.c), using only setitimer(). Rewriting the mc146818 to use the new timer framework. 20060817 Adding a call to gettimeofday() every now and then (once every second, at the moment) to resynch the timer if it drifts. Beginning to convert the ISA timer interrupt mechanism (8253 and 8259) to use the new timer framework. Removing the -I command line option. 20060819 Adding the -I command line option again, with new semantics. Working on Footbridge timer interrupts; NetBSD/NetWinder and NetBSD/CATS now run at correct speed, but unfortunately with HUGE delays during bootup. 20060821 Some minor m68k updates. Adding the first instruction: nop. :) Minor Alpha emulation updates. 20060822 Adding a FreeBSD development specific YAMON environment variable ("khz") (as suggested by Bruce M. Simpson). Moving YAMON environment variable initialization from machine_evbmips.c into promemul/yamon.c, and adding some more variables. Continuing on the LCA PCI bus controller (for Alpha machines). 20060823 Continuing on the timer stuff: experimenting with MIPS count/ compare interrupts connected to the timer framework. 20060825 Adding bogus SCSI commands 0x51 (SCSICDROM_READ_DISCINFO) and 0x52 (SCSICDROM_READ_TRACKINFO) to the SCSI emulation layer, to allow NetBSD/pmax 4.0_BETA to be installed from CDROM. Minor updates to the LCA PCI controller. 20060827 Implementing a CHIP8 cpu mode, and a corresponding CHIP8 machine, for fun. Disassembly support for all instructions, and most of the common instructions have been implemented: mvi, mov_imm, add_imm, jmp, rand, cls, sprite, skeq_imm, jsr, skne_imm, bcd, rts, ldr, str, mov, or, and, xor, add, sub, font, ssound, sdelay, gdelay, bogus skup/skpr, skeq, skne. 20060828 Beginning to convert the CHIP8 cpu in the CHIP8 machine to a (more correct) RCA 180x cpu. (Disassembly for all 1802 instructions has been implemented, but no execution yet, and no 1805 extended instructions.) 20060829 Minor Alpha emulation updates. 20060830 Beginning to experiment a little with PCI IDE for SGI O2. Fixing the cursor key mappings for MobilePro 770 emulation. Fixing the LK201 warning caused by recent NetBSD/pmax. The MIPS R41xx standby, suspend, and hibernate instructions now behave like the RM52xx/MIPS32/MIPS64 wait instruction. Fixing dev_wdc so it calculates correct (64-bit) offsets before giving them to diskimage_access(). 20060831 Continuing on Alpha emulation (OSF1 PALcode). 20060901 Minor Alpha updates; beginning on virtual memory pagetables. Removed the limit for max nr of devices (in preparation for allowing devices' base addresses to be changed during runtime). Adding a hack for MIPS [d]mfc0 select 0 (except the count register), so that the coproc register is simply copied. The MIPS suspend instruction now exits the emulator, instead of being treated as a wait instruction (this causes NetBSD/ hpcmips to get correct 'halt' behavior). The VR41xx RTC now returns correct time. Connecting the VR41xx timer to the timer framework (fixed at 128 Hz, for now). Continuing on SPARC emulation, adding more instructions: restore, ba_xcc, ble. The rectangle drawing demo works :) Removing the last traces of the old ENABLE_CACHE_EMULATION MIPS stuff (not usable with dyntrans anyway). 20060902 Splitting up src/net.c into several smaller files in its own subdirectory (src/net/). 20060903 Cleanup of the files in src/net/, to make them less ugly. 20060904 Continuing on the 'settings' subsystem. Minor progress on the SPARC emulation mode. 20060905 Cleanup of various things, and connecting the settings infrastructure to various subsystems (emul, machine, cpu, etc). Changing the lk201 mouse update routine to not rely on any emulated hardware framebuffer cursor coordinates, but instead always do (semi-usable) relative movements. 20060906 Continuing on the lk201 mouse stuff. Mouse behaviour with multiple framebuffers (which was working in Ultrix) is now semi-broken (but it still works, in a way). Moving the documentation about networking into its own file (networking.html), and refreshing it a bit. Adding an example of how to use ethernet frame direct-access (udp_snoop). 20060907 Continuing on the settings infrastructure. 20060908 Minor updates to SH emulation: for 32-bit emulation: delay slots and the 'jsr @Rn' instruction. I'm putting 64-bit SH5 on ice, for now. 20060909-10 Implementing some more 32-bit SH instructions. Removing the 64-bit mode completely. Enough has now been implemented to run the rectangle drawing demo. :-) 20060912 Adding more SH instructions. 20060916 Continuing on SH emulation (some more instructions: div0u, div1, rotcl/rotcr, more mov instructions, dt, braf, sets, sett, tst_imm, dmuls.l, subc, ldc_rm_vbr, movt, clrt, clrs, clrmac). Continuing on the settings subsystem (beginning on reading/ writing settings, removing bugs, and connecting more cpus to the framework). 20060919 More work on SH emulation; adding an ldc banked instruction, and attaching a 640x480 framebuffer to the Dreamcast machine mode (NetBSD/dreamcast prints the NetBSD copyright banner :-), and then panics). 20060920 Continuing on the settings subsystem. 20060921 Fixing the Footbridge timer stuff so that NetBSD/cats and NetBSD/netwinder boot up without the delays. 20060922 Temporarily hardcoding MIPS timer interrupt to 100 Hz. With 'wait' support disabled, NetBSD/malta and Linux/malta run at correct speed. 20060923 Connecting dev_gt to the timer framework, so that NetBSD/cobalt runs at correct speed. Moving SH4-specific memory mapped registers into its own device (dev_sh4.c). Running with -N now prints "idling" instead of bogus nr of instrs/second (which isn't valid anyway) while idling. 20060924 Algor emulation should now run at correct speed. Adding disassembly support for some MIPS64 revision 2 instructions: ext, dext, dextm, dextu. 20060926 The timer framework now works also when the MIPS wait instruction is used. 20060928 Re-implementing checks for coprocessor availability for MIPS cop0 instructions. (Thanks to Carl van Schaik for noticing the lack of cop0 availability checks.) 20060929 Implementing an instruction combination hack which treats NetBSD/pmax' idle loop as a wait-like instruction. 20060930 The ENTRYHI_R_MASK was missing in (at least) memory_mips_v2p.c, causing TLB lookups to sometimes succeed when they should have failed. (A big thank you to Juli Mallett for noticing the problem.) Adding disassembly support for more MIPS64 revision 2 opcodes (seb, seh, wsbh, jalr.hb, jr.hb, synci, ins, dins, dinsu, dinsm, dsbh, dshd, ror, dror, rorv, drorv, dror32). Also implementing seb, seh, dsbh, dshd, and wsbh. Implementing an instruction combination hack for Linux/pmax' idle loop, similar to the NetBSD/pmax case. 20061001 Changing the NetBSD/sgimips install instructions to extract files from an iso image, instead of downloading them via ftp. 20061002 More-than-31-bit userland addresses in memory_mips_v2p.c were not actually working; applying a fix from Carl van Schaik to enable them to work + making some other updates (adding kuseg support). Fixing hpcmips (vr41xx) timer initialization. Experimenting with O(n)->O(1) reduction in the MIPS TLB lookup loop. Seems to work both for R3000 and non-R3000. 20061003 Continuing a little on SH emulation (adding more control registers; mini-cleanup of memory_sh.c). 20061004 Beginning on a dev_rtc, a clock/timer device for the test machines; also adding a demo, and some documentation. Fixing a bug in SH "mov.w @(disp,pc),Rn" (the result wasn't sign-extended), and adding the addc and ldtlb instructions. 20061005 Contining on SH emulation: virtual to physical address translation, and a skeleton exception mechanism. 20061006 Adding more SH instructions (various loads and stores, rte, negc, muls.w, various privileged register-move instructions). 20061007 More SH instructions: various move instructions, trapa, div0s, float, fdiv, ftrc. Continuing on dev_rtc; removing the rtc demo. 20061008 Adding a dummy Dreamcast PROM module. (Homebrew Dreamcast programs using KOS libs need this.) Adding more SH instructions: "stc vbr,rn", rotl, rotr, fsca, fmul, fadd, various floating-point moves, etc. A 256-byte demo for Dreamcast runs :-) 20061012 Adding the SH "lds Rm,pr" and bsr instructions. 20061013 More SH instructions: "sts fpscr,rn", tas.b, and some more floating point instructions, cmp/str, and more moves. Adding a dummy dev_pvr (Dreamcast graphics controller). 20061014 Generalizing the expression evaluator (used in the built-in debugger) to support parentheses and +-*/%^&|. 20061015 Removing the experimental tlb index hint code in mips_memory_v2p.c, since it didn't really have any effect. 20061017 Minor SH updates; adding the "sts pr,Rn", fcmp/gt, fneg, frchg, and some other instructions. Fixing missing sign- extension in an 8-bit load instruction. 20061019 Adding a simple dev_dreamcast_rtc. Implementing memory-mapped access to the SH ITLB/UTLB arrays. 20061021 Continuing on various SH and Dreamcast things: sh4 timers, debug messages for dev_pvr, fixing some virtual address translation bugs, adding the bsrf instruction. The NetBSD/dreamcast GENERIC_MD kernel now reaches userland :) Adding a dummy dev_dreamcast_asic.c (not really useful yet). Implementing simple support for Store Queues. Beginning on the PVR Tile Accelerator. 20061022 Generalizing the PVR framebuffer to support off-screen drawing, multiple bit-depths, etc. (A small speed penalty, but most likely worth it.) Adding more SH instructions (mulu.w, fcmp/eq, fsub, fmac, fschg, and some more); correcting bugs in "fsca" and "float". 20061024 Adding the SH ftrv (matrix * vector) instruction. Marcus Comstedt's "tatest" example runs :) (wireframe only). Correcting disassembly for SH floating point instructions that use the xd* registers. Adding the SH fsts instruction. In memory_device_dyntrans_access(), only the currently used range is now invalidated, and not the entire device range. 20061025 Adding a dummy AVR32 cpu mode skeleton. 20061026 Various Dreamcast updates; beginning on a Maple bus controller. 20061027 Continuing on the Maple bus. A bogus Controller, Keyboard, and Mouse can now be detected by NetBSD and KOS homebrew programs. Cleaning up the SH4 Timer Management Unit, and beginning on SH4 interrupts. Implementing the Dreamcast SYSASIC. 20061028 Continuing on the SYSASIC. Adding the SH fsqrt instruction. memory_sh.c now actually scans the ITLB. Fixing a bug in dev_sh4.c, related to associative writes into the memory-mapped UTLB array. NetBSD/dreamcast now reaches userland stably, and prints the "Terminal type?" message :-] Implementing enough of the Dreamcast keyboard to make NetBSD accept it for input. Enabling SuperH for stable (non-development) builds. Adding NetBSD/dreamcast to the documentation, although it doesn't support root-on-nfs yet. 20061029 Changing usleep(1) calls in the debugger to to usleep(10000) (according to Brian Foley, this makes GXemul run better on MacOS X). Making the Maple "Controller" do something (enough to barely interact with dcircus.elf). 20061030-31 Some progress on the PVR. More test programs start running (but with strange output). Various other SH4-related updates. 20061102 Various Dreamcast and SH4 updates; more KOS demos run now. 20061104 Adding a skeleton dev_mb8696x.c (the Dreamcast's LAN adapter). 20061105 Continuing on the MB8696x; NetBSD/dreamcast detects it as mbe0. Testing for the release. ============== RELEASE 0.4.3 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1325 2006/08/15 15:38:37 debug Exp $ 20060723 More Transputer instructions (pfix, nfix, opr, mint, ldl, ldlp, eqc, rev, ajw, stl, stlf, sthf, sub, ldnl, ldnlp, ldpi, move, wcnt, add, bcnt). Adding more SPARC instructions (andcc, addcc, bl, rdpr). Progress on the igsfb framebuffer used by NetBSD/netwinder. Enabling 8-bit fills in dev_fb. NetBSD/netwinder 3.0.1 can now run from a disk image :-) 20060724 Cleanup/performance fix for 64-bit virtual translation table updates (by removing the "timestamp" stuff). A full NetBSD/pmax 3.0.1 install for R4400 has dropped from 667 seconds to 584 :) Fixing the igsfb "almost vga" color (it is 24-bit, not 18-bit). Adding some MIPS instruction combinations (3*lw, and 3*addu). The 8048 keyboard now turns off interrupt enable between the KBR_ACK and the KBR_RSTDONE, to work better with Linux 2.6. Not causing PPC DEC interrupts if PPC_NO_DEC is set for a specific CPU; NetBSD/bebox gets slightly further than before. Adding some more SPARC instructions: branches, udiv. 20060725 Refreshing dev_pckbc.c a little. Cleanups for the SH emulation mode, and adding the first "compact" (16-bit) instructions: various simple movs, nop, shll, stc, or, ldc. 20060726 Adding dummy "pcn" (AMD PCnet NIC) PCI glue. 20060727 Various cleanups; removing stuff from cpu.h, such as running_translated (not really meaningful anymore), and page flags (breaking into the debugger clears all translations anyway). Minor MIPS instruction combination updates. 20060807 Expanding the 3*sw and 3*lw MIPS instruction combinations to work with 2* and 4* too, resulting in a minor performance gain. Implementing a usleep hack for the RM52xx/MIPS32/MIPS64 "wait" instruction (when emulating 1 cpu). 20060808 Experimenting with some more MIPS instruction combinations. Implementing support for showing a (hardcoded 12x22) text cursor in igsfb. 20060809 Simplifying the NetBSD/evbmips (Malta) install instructions somewhat (by using a NetBSD/pmax ramdisk install kernel). 20060812 Experimenting more with the MIPS 'wait' instruction. PCI configuration register writes can now be handled, which allow PCI IDE controllers to work with NetBSD/Malta 3.0.1 and NetBSD/cobalt 3.0.1. (Previously only NetBSD 2.1 worked.) 20060813 Updating dev_gt.c based on numbers from Alec Voropay, to enable Linux 2.6 to use PCI on Malta. Continuing on Algor interrupt stuff. 20060814 Adding support for routing ISA interrupts to two different interrupts, making it possible to run NetBSD/algor :-) 20060814-15 Testing for the release. ============== RELEASE 0.4.2 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1298 2006/07/22 11:27:46 debug Exp $ 20060626 Continuing on SPARC emulation (beginning on the 'save' instruction, register windows, etc). 20060629 Planning statistics gathering (new -s command line option), and renaming speed_tricks to allow_instruction_combinations. 20060630 Some minor manual page updates. Various cleanups. Implementing the -s command line option. 20060701 FINALLY found the bug which prevented Linux and Ultrix from running without the ugly hack in the R2000/R3000 cache isol code; it was the phystranslation hint array which was buggy. Removing the phystranslation hint code completely, for now. 20060702 Minor dyntrans cleanups; invalidation of physpages now only invalidate those parts of a page that have actually been translated. (32 parts per page.) Some MIPS non-R3000 speed fixes. Experimenting with MIPS instruction combination for some addiu+bne+sw loops, and sw+sw+sw. Adding support (again) for larger-than-4KB pages in MIPS tlbw*. Continuing on SPARC emulation: adding load/store instructions. 20060704 Fixing a virtual vs physical page shift bug in the new tlbw* implementation. Problem noticed by Jakub Jermar. (Many thanks.) Moving rfe and eret to cpu_mips_instr.c, since that is the only place that uses them nowadays. 20060705 Removing the BSD license from the "testmachine" include files, placing them in the public domain instead; this enables the testmachine stuff to be used from projects which are incompatible with the BSD license for some reason. 20060707 Adding instruction combinations for the R2000/R3000 L1 I-cache invalidation code used by NetBSD/pmax 3.0, lui+addiu, various branches followed by addiu or nop, and jr ra followed by addiu. The time it takes to perform a full NetBSD/pmax R3000 install on the laptop has dropped from 573 seconds to 539. :-) 20060708 Adding a framebuffer controller device (dev_fbctrl), which so far can be used to change the fb resolution during runtime, but in the future will also be useful for accelerated block fill/ copy, and possibly also simplified character output. Adding an instruction combination for NetBSD/pmax' strlen. 20060709 Minor fixes: reading raw files in src/file.c wasn't memblock aligned, removing buggy multi_sw MIPS instruction combination, etc. 20060711 Adding a machine_qemu.c, which contains a "qemu_mips" machine. (It mimics QEMU's MIPS machine mode, so that a test kernel made for QEMU_MIPS also can run in GXemul... at least to some extent.) Adding a short section about how to run this mode to doc/guestoses.html. 20060714 Misc. minor code cleanups. 20060715 Applying a patch which adds getchar() to promemul/yamon.c (from Oleksandr Tymoshenko). Adding yamon.h from NetBSD, and rewriting yamon.c to use it (instead of ugly hardcoded numbers) + some cleanup. 20060716 Found and fixed the bug which broke single-stepping of 64-bit programs between 0.4.0 and 0.4.0.1 (caused by too quick refactoring and no testing). Hopefully this fix will not break too many other things. 20060718 Continuing on the 8253 PIT; it now works with Linux/QEMU_MIPS. Re-adding the sw+sw+sw instr comb (the problem was that I had ignored endian issues); however, it doesn't seem to give any big performance gain. 20060720 Adding a dummy Transputer mode (T414, T800 etc) skeleton (only the 'j' and 'ldc' instructions are implemented so far). :-} 20060721 Adding gtreg.h from NetBSD, updating dev_gt.c to use it, plus misc. other updates to get Linux 2.6 for evbmips/malta working (thanks to Alec Voropay for the details). FINALLY found and fixed the bug which made tlbw* for non-R3000 buggy; it was a reference count problem in the dyntrans core. 20060722 Testing stuff; things seem stable enough for a new release. ============== RELEASE 0.4.1 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1264 2006/06/25 11:08:04 debug Exp $ 20060624 Replacing the error-prone machine type initialization stuff with something more reasonable. Finally removing the old "cpu_run" kludge; moving around stuff in machine.c and emul.c to better suit the dyntrans system. Various minor dyntrans cleanups (renaming translate_address to translate_v2p, and experimenting with template physpages). 20060625 Removing the speed hack which separated the vph entries into two halves (code vs data); things seem a lot more stable now. Minor performance hack: R2000/R3000 cache isolation now only clears address translations when going into isolation, not when going out of it. Fixing the MIPS interrupt problems by letting mtc0 immediately cause interrupts. ============== RELEASE 0.4.0.1 ==============
++ 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 ==============
++ 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 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1055 2005/11/25 22:48:36 debug Exp $ 20051031 Adding disassembly support for more ARM instructions (clz, smul* etc), and adding a hack to support "new tiny" pages for StrongARM. 20051101 Minor documentation updates (NetBSD 2.0.2 -> 2.1, and OpenBSD 3.7 -> 3.8, and lots of testing). Changing from 1-sector PIO mode 0 transfers to 128-sector PIO mode 3 (in dev_wdc). Various minor ARM dyntrans updates (pc-relative loads from within the same page as the instruction are now treated as constant "mov"). 20051102 Re-enabling instruction combinations (they were accidentally disabled). Dyntrans TLB entries are now overwritten using a round-robin scheme instead of randomly. This increases performance. Fixing a typo in file.c (thanks to Chuan-Hua Chang for noticing it). Experimenting with adding ATAPI support to dev_wdc (to make emulated *BSD detect cdroms as cdroms, not harddisks). 20051104 Various minor updates. 20051105 Continuing on the ATAPI emulation. Seems to work well enough for a NetBSD/cats installation, but not OpenBSD/cats. Various other updates. 20051106 Modifying the -Y command line option to allow scaleup with certain graphic controllers (only dev_vga so far), not just scaledown. Some minor dyntrans cleanups. 20051107 Beginning a cleanup up the PCI subsystem (removing the read_register hack, etc). 20051108 Continuing the cleanup; splitting up some pci devices into a normal autodev device and some separate pci glue code. 20051109 Continuing on the PCI bus stuff; all old pci_*.c have been incorporated into normal devices and/or rewritten as glue code only, adding a dummy Intel 82371AB PIIX4 for Malta (not really tested yet). Minor pckbc fix so that Linux doesn't complain. Working on the DEC 21143 NIC (ethernet mac rom stuff mostly). Various other minor fixes. 20051110 Some more ARM dyntrans fine-tuning (e.g. some instruction combinations (cmps followed by conditional branch within the same page) and special cases for DPIs with regform when the shifter isn't used). 20051111 ARM dyntrans updates: O(n)->O(1) for just-mark-as-non- writable in the generic pc_to_pointers function, and some other minor hacks. Merging Cobalt and evbmips (Malta) ISA interrupt handling, and some minor fixes to allow Linux to accept harddisk irqs. 20051112 Minor device updates (pckbc, dec21143, lpt, ...), most importantly fixing the ALI M1543/M5229 so that harddisk irqs work with Linux/CATS. 20051113 Some more generalizations of the PCI subsystem. Finally took the time to add a hack for SCSI CDROM TOCs; this enables OpenBSD to use partition 'a' (as needed by the OpenBSD installer), and Windows NT's installer to get a bit further. Also fixing dev_wdc to allow Linux to detect ATAPI CDROMs. Continuing on the DEC 21143. 20051114 Minor ARM dyntrans tweaks; ARM cmps+branch optimization when comparing with 0, and generalizing the xchg instr. comb. Adding disassembly of ARM mrrc/mcrr and q{,d}{add,sub}. 20051115 Continuing on various PPC things (BATs, other address trans- lation things, various loads/stores, BeBox emulation, etc.). Beginning to work on PPC interrupt/exception support. 20051116 Factoring out some code which initializes legacy ISA devices from those machines that use them (bus_isa). Continuing on PPC interrupt/exception support. 20051117 Minor Malta fixes: RTC year offset = 80, disabling a speed hack which caused NetBSD to detect a too fast cpu, and adding a new hack to make Linux detect a faster cpu. Continuing on the Artesyn PM/PPC emulation mode. Adding an Algor emulation skeleton (P4032 and P5064); implementing some of the basics. Continuing on PPC emulation in general; usage of unimplemented SPRs is now easier to track, continuing on memory/exception related issues, etc. 20051118 More work on PPC emulation (tgpr0..3, exception handling, memory stuff, syscalls, etc.). 20051119 Changing the ARM dyntrans code to mostly use cpu->pc, and not necessarily use arm reg 15. Seems to work. Various PPC updates; continuing on the PReP emulation mode. 20051120 Adding a workaround/hack to dev_mc146818 to allow NetBSD/prep to detect the clock. 20051121 More cleanup of the PCI bus (memory and I/O bases, etc). Continuing on various PPC things (decrementer and timebase, WDCs on obio (on PReP) use irq 13, not 14/15). 20051122 Continuing on the CPC700 controller (interrupts etc) for PMPPC, and on PPC stuff in general. Finally! After some bug fixes to the virtual to physical addr translation, NetBSD/{prep,pmppc} 2.1 reach userland and are stable enough to be interacted with. More PCI updates; reverse-endian device access for PowerPC etc. 20051123 Generalizing the IEEE floating point subsystem (moving it out from src/cpus/cpu_mips_coproc.c into a new src/float_emul.c). Input via slave xterms was sometimes not really working; fixing this for ns16550, and a warning message is now displayed if multiple non-xterm consoles are active. Adding some PPC floating point support, etc. Various interrupt related updates (dev_wdc, _ns16550, _8259, and the isa32 common code in machine.c). NetBSD/prep can now be installed! :-) (Well, with some manual commands necessary before running sysinst.) Updating the documentation and various other things to reflect this. 20051124 Various minor documentation updates. Continuing the work on the DEC 21143 NIC. 20051125 LOTS of work on the 21143. Both OpenBSD and NetBSD work fine with it now, except that OpenBSD sometimes gives a time-out warning. Minor documentation updates. ============== RELEASE 0.3.7 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.982 2005/10/07 22:45:32 debug Exp $ 20050816 Some success in decoding the way the SGI O2 PROM draws graphics during bootup; lines/rectangles and bitmaps work, enough to show the bootlogo etc. :-) Adding more PPC instructions, and (dummy) BAT registers. 20050817 Updating the pckbc to support scancode type 3 keyboards (required in order to interact with the SGI O2 PROM). Adding more PPC instructions. 20050818 Adding more ARM instructions; general register forms. Importing armreg.h from NetBSD (ARM cpu ids). Adding a (dummy) CATS machine mode (using SA110 as the default CPU). Continuing on general dyntrans related stuff. 20050819 Register forms for ARM load/stores. Gaah! The Compaq C Compiler bug is triggered for ARM loads as well, not just PPC :-( Adding full support for ARM PC-relative load/stores, and load/ stores where the PC register is the destination register. Adding support for ARM a.out binaries. 20050820 Continuing to add more ARM instructions, and correcting some bugs. Continuing on CATS emulation. More work on the PPC stuff. 20050821 Minor PPC and ARM updates. Adding more machine types. 20050822 All ARM "data processing instructions" are now generated automatically. 20050824 Beginning the work on the ARM system control coprocessor. Adding support for ARM halfword load/stores, and signed loads. 20050825 Fixing an important bug related to the ARM condition codes. OpenBSD/zaurus and NetBSD/netwinder now print some boot messages. :) Adding a dummy SH (Hitachi SuperH) cpu family. Beginning to add some ARM virtual address translation. MIPS bugfixes: unaligned PC now cause an ADEL exception (at least for non-bintrans execution), and ADEL/ADES (not TLBL/TLBS) are used if userland tries to access kernel space. (Thanks to Joshua Wise for making me aware of these bugs.) 20050827 More work on the ARM emulation, and various other updates. 20050828 More ARM updates. Finally taking the time to work on translation invalidation (i.e. invalidating translated code mappings when memory is written to). Hopefully this doesn't break anything. 20050829 Moving CPU related files from src/ to a new subdir, src/cpus/. Moving PROM emulation stuff from src/ to src/promemul/. Better debug instruction trace for ARM loads and stores. 20050830 Various ARM updates (correcting CMP flag calculation, etc). 20050831 PPC instruction updates. (Flag fixes, etc.) 20050901 Various minor PPC and ARM instruction emulation updates. Minor OpenFirmware emulation updates. 20050903 Adding support for adding arbitrary ARM coprocessors (with the i80321 I/O coprocessor as a first test). Various other ARM and PPC updates. 20050904 Adding some SHcompact disassembly routines. 20050907 (Re)adding a dummy HPPA CPU module, and a dummy i960 module. 20050908 Began hacking on some Apple Partition Table support. 20050909 Adding support for loading Mach-O (Darwin PPC) binaries. 20050910 Fixing an ARM bug (Carry flag was incorrectly updated for some data processing instructions); OpenBSD/cats and NetBSD/ netwinder get quite a bit further now. Applying a patch to dev_wdc, and a one-liner to dev_pcic, to make them work better when emulating new versions of OpenBSD. (Thanks to Alexander Yurchenko for the patches.) Also doing some other minor updates to dev_wdc. (Some cleanup, and finally converting to devinit, etc.) 20050912 IRIX doesn't have u_int64_t by default (noticed by Andreas <avr@gnulinux.nl>); configure updated to reflect this. Working on ARM register bank switching, CPSR vs SPSR issues, and beginning the work on interrupt/exception support. 20050913 Various minor ARM updates (speeding up load/store multiple, and fixing a ROR bug in R(); NetBSD/cats now boots as far as OpenBSD/cats). 20050917 Adding a dummy Atmel AVR (8-bit) cpu family skeleton. 20050918 Various minor updates. 20050919 Symbols are now loaded from Mach-O executables. Continuing the work on adding ARM exception support. 20050920 More work on ARM stuff: OpenBSD/cats and NetBSD/cats reach userland! :-) 20050921 Some more progress on ARM interrupt specifics. 20050923 Fixing linesize for VR4121 (patch by Yurchenko). Also fixing linesizes/cachesizes for some other VR4xxx. Adding a dummy Acer Labs M1543 PCI-ISA bridge (for CATS) and a dummy Symphony Labs 83C553 bridge (for Netwinder), usable by dev_footbridge. 20050924 Some PPC progress. 20050925 More PPC progress. 20050926 PPC progress (fixing some bugs etc); Darwin's kernel gets slightly further than before. 20050928 Various updates: footbridge/ISA/pciide stuff, and finally fixing the VGA text scroll-by-changing-the-base-offset bug. 20050930 Adding a dummy S3 ViRGE pci card for CATS emulation, which both NetBSD and OpenBSD detects as VGA. Continuing on Footbridge (timers, ISA interrupt stuff). 20051001 Continuing... there are still bugs, probably interrupt- related. 20051002 More work on the Footbridge (interrupt stuff). 20051003 Various minor updates. (Trying to find the bug(s).) 20051004 Continuing on the ARM stuff. 20051005 More ARM-related fixes. 20051007 FINALLY! Found and fixed 2 ARM bugs: 1 memory related, and the other was because of an error in the ARM manual (load multiple with the S-bit set should _NOT_ load usermode registers, as the manual says, but it should load saved registers, which may or may not happen to be usermode registers). NetBSD/cats and OpenBSD/cats seem to install fine now :-) except for a minor bug at the end of the OpenBSD/cats install. Updating the documentation, preparing for the next release. 20051008 Continuing with release testing and cleanup.
++ trunk/HISTORY (local) $Id: HISTORY,v 1.905 2005/08/16 09:16:24 debug Exp $ 20050628 Continuing the work on the ARM translation engine. end_of_page works. Experimenting with load/store translation caches (virtual -> physical -> host). 20050629 More ARM stuff (memory access translation cache, mostly). This might break a lot of stuff elsewhere, probably some MIPS- related translation things. 20050630 Many load/stores are now automatically generated and included into cpu_arm_instr.c; 1024 functions in total (!). Fixes based on feedback from Alec Voropay: only print 8 hex digits instead of 16 in some cases when emulating 32-bit machines; similar 8 vs 16 digit fix for breakpoint addresses; 4Kc has 16 TLB entries, not 48; the MIPS config select1 register is now printed with "reg ,0". Also changing many other occurances of 16 vs 8 digit output. Adding cache associativity fields to mips_cpu_types.h; updating some other cache fields; making the output of mips_cpu_dumpinfo() look nicer. Generalizing the bintrans stuff for device accesses to also work with the new translation system. (This might also break some MIPS things.) Adding multi-load/store instructions to the ARM disassembler and the translator, and some optimizations of various kinds. 20050701 Adding a simple dev_disk (it can read/write sectors from disk images). 20050712 Adding dev_ether (a simple ethernet send/receive device). Debugger command "ninstrs" for toggling show_nr_of_instructions during runtime. Removing the framebuffer logo. 20050713 Continuing on dev_ether. Adding a dummy cpu_alpha (again). 20050714 More work on cpu_alpha. 20050715 More work on cpu_alpha. Many instructions work, enough to run a simple framebuffer fill test (similar to the ARM test). 20050716 More Alpha stuff. 20050717 Minor updates (Alpha stuff). 20050718 Minor updates (Alpha stuff). 20050719 Generalizing some Alpha instructions. 20050720 More Alpha-related updates. 20050721 Continuing on cpu_alpha. Importing rpb.h from NetBSD/alpha. 20050722 Alpha-related updates: userland stuff (Hello World using write() compiled statically for FreeBSD/Alpha runs fine), and more instructions are now implemented. 20050723 Fixing ldq_u and stq_u. Adding more instructions (conditional moves, masks, extracts, shifts). 20050724 More FreeBSD/Alpha userland stuff, and adding some more instructions (inserts). 20050725 Continuing on the Alpha stuff. (Adding dummy ldt/stt.) Adding a -A command line option to turn off alignment checks in some cases (for translated code). Trying to remove the old bintrans code which updated the pc and nr_of_executed_instructions for every instruction. 20050726 Making another attempt att removing the pc/nr of instructions code. This time it worked, huge performance increase for artificial test code, but performance loss for real-world code :-( so I'm scrapping that code for now. Tiny performance increase on Alpha (by using ret instead of jmp, to play nice with the Alpha's branch prediction) for the old MIPS bintrans backend. 20050727 Various minor fixes and cleanups. 20050728 Switching from a 2-level virtual to host/physical translation system for ARM emulation, to a 1-level translation. Trying to switch from 2-level to 1-level for the MIPS bintrans system as well (Alpha only, so far), but there is at least one problem: caches and/or how they work with device mappings. 20050730 Doing the 2-level to 1-level conversion for the i386 backend. The cache/device bug is still there for R2K/3K :( Various other minor updates (Malta etc). The mc146818 clock now updates the UIP bit in a way which works better with Linux for at least sgimips and Malta emulation. Beginning the work on refactoring the dyntrans system. 20050731 Continuing the dyntrans refactoring. Fixing a small but serious host alignment bug in memory_rw. Adding support for big-endian load/stores to the i386 bintrans backend. Another minor i386 bintrans backend update: stores from the zero register are now one (or two) loads shorter. The slt and sltu instructions were incorrectly implemented for the i386 backend; only using them for 32-bit mode for now. 20050801 Continuing the dyntrans refactoring. Cleanup of the ns16550 serial controller (removing unnecessary code). Bugfix (memory corruption bug) in dev_gt, and a patch/hack from Alec Voropay for Linux/Malta. 20050802 More cleanup/refactoring of the dyntrans subsystem: adding phys_page pointers to the lookup tables, for quick jumps between translated pages. Better fix for the ns16550 device (but still no real FIFO functionality). Converting cpu_ppc to the new dyntrans system. This means that I will have to start from scratch with implementing each instruction, and figure out how to implement dual 64/32-bit modes etc. Removing the URISC CPU family, because it was useless. 20050803 When selecting a machine type, the main type can now be omitted if the subtype name is unique. (I.e. -E can be omitted.) Fixing a dyntrans/device update bug. (Writes to offset 0 of a device could sometimes go unnoticed.) Adding an experimental "instruction combination" hack for ARM for memset-like byte fill loops. 20050804 Minor progress on cpu_alpha and related things. Finally fixing the MIPS dmult/dmultu bugs. Fixing some minor TODOs. 20050805 Generalizing the 8259 PIC. It now also works with Cobalt and evbmips emulation, in addition to the x86 hack. Finally converting the ns16550 device to use devinit. Continuing the work on the dyntrans system. Thinking about how to add breakpoints. 20050806 More dyntrans updates. Breakpoints seem to work now. 20050807 Minor updates: cpu_alpha and related things; removing dev_malta (as it isn't used any more). Dyntrans: working on general "show trace tree" support. The trace tree stuff now works with both the old MIPS code and with newer dyntrans modes. :) Continuing on Alpha-related stuff (trying to get *BSD to boot a bit further, adding more instructions, etc). 20050808 Adding a dummy IA64 cpu family, and continuing the refactoring of the dyntrans system. Removing the regression test stuff, because it was more or less useless. Adding loadlinked/storeconditional type instructions to the Alpha emulation. (Needed for Linux/alpha. Not very well tested yet.) 20050809 The function call trace tree now prints a per-function nr of arguments. (Semi-meaningless, since that data isn't read yet from the ELFs; some hardcoded symbols such as memcpy() and strlen() work fine, though.) More dyntrans refactoring; taking out more of the things that are common to all cpu families. 20050810 Working on adding support for "dual mode" for PPC dyntrans (i.e. both 64-bit and 32-bit modes). (Re)adding some simple PPC instructions. 20050811 Adding a dummy M68K cpu family. The dyntrans system isn't ready for variable-length ISAs yet, so it's completely bogus so far. Re-adding more PPC instructions. Adding a hack to src/file.c which allows OpenBSD/mac68k a.out kernels to be loaded. Beginning to add PPC loads/stores. So far they only work in 32-bit mode. 20050812 The configure file option "add_remote" now accepts symbolic host names, in addition to numeric IPv4 addresses. Re-adding more PPC instructions. 20050814 Continuing to port back more PPC instructions. Found and fixed the cache/device write-update bug for 32-bit MIPS bintrans. :-) Triggered a really weird and annoying bug in Compaq's C compiler; ccc sometimes outputs code which loads from an address _before_ checking whether the pointer was NULL or not. (I'm not sure how to handle this problem.) 20050815 Removing all of the old x86 instruction execution code; adding a new (dummy) dyntrans module for x86. Taking the first steps to extend the dyntrans system to support variable-length instructions. Slowly preparing for the next release. 20050816 Adding a dummy SPARC cpu module. Minor updates (documentation etc) for the release. ============== RELEASE 0.3.5 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.815 2005/06/27 23:04:35 debug Exp $ 20050617 Experimenting some more with netbooting OpenBSD/sgi. Adding a hack which allows emulated ethernet networks to be distributed across multiple emulator processes. 20050618 Minor updates (documentation, dummy YAMON emulation, etc). 20050620 strcpy/strcat -> strlcpy/strlcat updates. Some more progress on evbmips (Malta). 20050621 Adding a section to doc/configfiles.html about ethernet emulation across multiple hosts. Beginning the work on the ARM translation engine (using the dynamic-but-not-binary translation method). Fixing a bintrans bug: 0x9fc00000 should always be treated as PROM area, just as 0xbfc00000 is. Minor progress on Malta emulation (the PCI-ISA bus). 20050622 NetBSD/evbmips can now be installed (using another emulated machine) and run (including userland and so on). :-) Spliting up the bintrans haddr_entry field into two (one for read, one for write). Probably not much of a speed increase, though. Updating some NetBSD 2.0 -> 2.0.2 in the documentation. 20050623 Minor updates (documentation, the TODO file, etc). gzipped kernels are now always automagically gunzipped when loaded. 20050624 Adding a dummy Playstation Portable (PSP) mode, just barely enough to run Hello World (in weird colors :-). Removing the -b command line option; old bintrans is enabled by default instead. It makes more sense. Trying to finally fix the non-working performance measurement thing (instr/second etc). 20050625 Continuing on the essential basics for ARM emulation. Two instructions seem to work, a branch and a simple "mov". (The mov arguments are not correct yet.) Performance is definitely reasonable. Various other minor updates. Adding the ARM "bl" instruction. Adding support for combining multiple ARM instructions into one function call. ("mov" + "mov" is the only one implemented so far, but it seems to work.) Cleaning up some IP32 interrupt things (crime/mace); disabling the PS/2 keyboard controller on IP32, so that NetBSD/sgimips boots into userland again. 20050626 Finally! NetBSD/sgimips netboots. Adding instructions to doc/guestoses.html on how to set up an nfs server etc. Various other minor fixes. Playstation Portable ".pbp" files can now be used directly. (The ELF part of the .pbp is extracted transparently.) Converting some sprintf -> snprintf. Adding some more instructions to the ARM disassembler. 20050627 More ARM updates. Adding some simple ldr(b), str(b), cmps, and conditional branch instructions, enough to run a simple Hello World program. All ARM instructions are now inlined/generated for all possible condition codes. Adding add and sub, and more load/store instructions. Removing dummy files: cpu_alpha.c, cpu_hppa.c, and cpu_sparc.c. Some minor documentation updates; preparing for a 0.3.4 release. Updating some URLs. ============== RELEASE 0.3.4 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.777 2005/06/12 12:31:52 debug Exp $ ============== RELEASE 0.3.3.1 ============== 20050609 Adding simple MIPS IPIs (to dev_mp). 20050611 Adding an ugly hack to track down low-reference bugs (define TRACE_NULL_CRASHES, or configure --tracenull). Other minor updates. 20050612 Adding a dummy evbmips mode. ============== RELEASE 0.3.3.2 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.772 2005/06/04 12:02:16 debug Exp $ 20050428 Disabling the "-fmove-all-movables" option in the configure script, because it causes the compile to fail on OpenBSD/sgi. 20050502 Minor updates. 20050503 Removing the WRT54G mode (it was bogus anyway), and adding a comment about Windows NT for MIPS in doc/experiments.html. Minor updates to the x86 instruction decoding. 20050504 Adding some more x86 instructions. Adding support for reading files from ISO9660 CDROMs (including gzipped files). It's an ugly hack, but it seems to work. Various other minor updates (dev_vga.c, pc_bios.c etc). 20050505 Some more x86-related updates. Beginning (what I hope will be) a major code cleanup phase. "bootris" (an x86 bootsector) runs :-) 20050506 Adding some more x86 instructions. 20050507 tmpnam => mkstemp. Working on a hack to allow VGA charcells to be shown even when not running with X11. Adding more x86 instructions. 20050508 x86 32-bit SIB addressing fix, and more instructions. 20050509 Adding more x86 instructions. 20050510 Minor documentation updates, and other updates (x86 stuff etc.) 20050511 More x86-related updates. 20050513 Various updates, mostly x86-related. (Trying to fix flag calculation, factoring out the ugly shift/rotate code, and some other things.) 20050514 Adding support for loading some old i386 a.out executables. Finally beginning the cleanup of machine/PROM/bios dependant info. Some minor documentation updates. Trying to clean up ARCBIOS stuff a little. 20050515 Trying to make it possible to actually use more than one disk type per machine (floppy, ide, scsi). Trying to clean up the kbd vs PROM console stuff. (For PC and ARC emulation modes, mostly.) Beginning to add an 8259 interrupt controller, and connecting it to the x86 emulation. 20050516 The first x86 interrupts seem to work (keyboard stuff). Adding a 8253/8254 programmable interval timer skeleton. FreeDOS now reaches a command prompt and can be interacted with. 20050517 After some bugfixes, MS-DOS also (sometimes) reaches a command prompt now. Trying to fix the pckbc to work with MS-DOS' keyb.com, but no success yet. 20050518 Adding a simple 32-bit x86 MMU skeleton. 20050519 Some more work on the x86 stuff. (Beginning the work on paging, and various other fixes). 20050520 More updates. Working on dev_vga (4-bit graphics modes), adding 40 columns support to the PC bios emulation. Trying to add support for resizing windows when switching between graphics modes. 20050521 Many more x86-related updates. 20050522 Correcting the initial stack pointer's sign-extension for ARCBIOS emulation (thanks to Alec Voropay for noticing the error). Continuing on the cleanup (ARCBIOS etc). dev_vga updates. 20050523 More x86 updates: trying to add some support for protected mode interrupts (via gate descriptors) and many other fixes. More ARCBIOS cleanup. Adding a device flag which indicates that reads cause no side-effects. (Useful for the "dump" command in the debugger, and other things.) Adding support for directly starting up x86 ELFs, skipping the bootloader stage. (Most ELFs, however, are not suitable for this.) 20050524 Adding simple 32-bit x86 TSS task switching, but no privilege level support yet. More work on dev_vga. A small "Copper bars" demo works. :-) Adding support for Trap Flag (single-step exceptions), at least in real mode, and various other x86-related fixes. 20050525 Adding a new disk image prefix (gH;S;) which can be used to override the default nr of heads and sectors per track. 20050527 Various bug fixes, more work on the x86 mode (stack change on interrupts between different priv.levels), and some minor documentation updates. 20050528 Various fixes (x86 stuff). 20050529 More x86 fixes. An OpenBSD/i386 bootfloppy reaches userland and can be interacted with (although there are problems with key repetition). NetBSD/i386 triggers a serious CISC-related problem: instruction fetches across page boundaries, where the later part isn't actually part of the instruction. 20050530 Various minor updates. (Documentation updates, etc.) 20050531 Adding some experimental code (experiments/new_test_*) which could be useful for dynamic (but not binary) translation in the future. 20050602 Adding a dummy ARM skeleton. Fixing the pckbc key repetition problem (by adding release scancodes for all keypresses). 20050603 Minor updates for the next release. 20050604 Release testing. Minor updates. ============== RELEASE 0.3.3 ============== 20050604 There'll probably be a 0.3.3.1 release soon, with some very very tiny updates.
++ trunk/HISTORY (local) $Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $ 20050408 Some minor updates to the wdc. Linux now doesn't complain anymore if a disk is non-present. 20050409 Various minor fixes (a bintrans bug, and some other things). The wdc seems to work with Playstation2 emulation, but there is a _long_ annoying delay when disks are detected. Fixing a really important bintrans bug (when devices and RAM are mixed within 4KB pages), which was triggered with NetBSD/playstation2 kernels. 20050410 Adding a dummy dev_ps2_ether (just so that NetBSD doesn't complain as much during bootup). Symbols starting with '$' are now ignored. Renaming dev_ps2_ohci.c to dev_ohci.c, etc. 20050411 Moving the bintrans-cache-isolation check from cpu_mips.c to cpu_mips_coproc.c. (I thought this would give a speedup, but it's not noticable.) Better playstation2 sbus interrupt code. Skip ahead many ticks if the count register is read manually. (This increases the speed of delay-loops that simply read the count register.) 20050412 Updates to the playstation2 timer/interrupt code. Some other minor updates. 20050413 NetBSD/cobalt runs from a disk image :-) including userland; updating the documentation on how to install NetBSD/cobalt using NetBSD/pmax (!). Some minor bintrans updates (no real speed improvement) and other minor updates (playstation2 now uses the -o options). 20050414 Adding a dummy x86 (and AMD64) mode. 20050415 Adding some (32-bit and 16-bit) x86 instructions. Adding some initial support for non-SCSI, non-IDE floppy images. (The x86 mode can boot from these, more or less.) Moving the devices/ and include/ directories to src/devices/ and src/include/, respectively. 20050416 Continuing on the x86 stuff. (Adding pc_bios.c and some simple support for software interrupts in 16-bit mode.) 20050417 Ripping out most of the x86 instruction decoding stuff, trying to rewrite it in a cleaner way. Disabling some of the least working CPU families in the configure script (sparc, x86, alpha, hppa), so that they are not enabled by default. 20050418 Trying to fix the bug which caused problems when turning on and off bintrans interactively, by flushing the bintrans cache whenever bintrans is manually (re)enabled. 20050419 Adding the 'lswi' ppc instruction. Minor updates to the x86 instruction decoding. 20050420 Renaming x86 register name indices from R_xx to X86_R_xx (this makes building on Tru64 nicer). 20050422 Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi. 20050427 Adding screenshots to guestoses.html. Some minor fixes and testing for the next release. ============== RELEASE 0.3.2 ==============
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