--- trunk/HISTORY 2007/10/08 16:19:01 16 +++ trunk/HISTORY 2007/10/08 16:19:37 22 @@ -1,4 +1,4 @@ -$Id: HISTORY,v 1.988 2005/10/11 03:53:57 debug Exp $ +$Id: HISTORY,v 1.1121 2006/02/18 21:03:08 debug Exp $ Changelog for GXemul: --------------------- @@ -2311,8 +2311,266 @@ 20051010 Small hack to not update virtual translation tables if memory accesses are done with the NO_EXCEPTION flag; a time reduction of almost a factor 2 for a full NetBSD/cats install. :-) -20051011 Passing -A as the default boot arg for CATS (works fine with - OpenBSD/cats). +20051011 Passing -A as the default boot arg for CATS (works fine with + OpenBSD/cats). ============== RELEASE 0.3.6.1 ============== +20051012 Fixing the VGA cursor offset bug, and speeding up framebuffer + redraws if character cells contain the same thing as during + the last redraw. +20051013 Adding a slow strd ARM instruction hack. +20051017 Minor updates: Adding a dummy i80321 Verde controller (for + XScale emulation), fixing the disassembly of the ARM "ldrd" + instruction, adding "support" for less-than-4KB pages for ARM + (by not adding them to translation tables). +20051020 Continuing on some HPCarm stuff. A NetBSD/hpcarm kernel prints + some boot messages on an emulated Jornada 720. + Making dev_ram work better with dyntrans (speeds up some things + quite a bit). +20051021 Automatically generating some of the most common ARM load/store + multiple instructions. +20051022 Better statistics gathering for the ARM load/store multiple. + Various other dyntrans and device updates. +20051023 Various minor updates. +20051024 Continuing; minor device and dyntrans fine-tuning. Adding the + first "reasonable" instruction combination hacks for ARM (the + cores of NetBSD/cats' memset and memcpy). +20051025 Fixing a dyntrans-related bug in dev_vga. Also changing the + dyntrans low/high access notification to only be updated on + writes, not reads. Hopefully it will be enough. (dev_vga in + charcell mode now seems to work correctly with both reads and + writes.) + Experimenting with gathering dyntrans statistics (which parts + of emulated RAM that are actually executed), and adding + instruction combination hacks for cache cleaning and a part of + NetBSD's scanc() function. +20051026 Adding a bitmap for ARM emulation which indicates if a page is + (specifically) user accessible; loads and stores with the t- + flag set can now use the translation arrays, which results in + a measurable speedup. +20051027 Dyntrans updates; adding an extra bitmap array for 32-bit + emulation modes, speeding up the check whether a physical page + has any code translations or not (O(n) -> O(1)). Doing a + similar reduction of O(n) to O(1) by avoiding the scan through + the translation entries on a translation update (32-bit mode + only). + Various other minor hacks. +20051029 Quick release, without any testing at all. + +============== RELEASE 0.3.6.2 ============== + +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 ============== + +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 ============== +