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++ 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 1.1121 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 ==============
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