--- trunk/HISTORY 2007/10/08 16:22:20 41 +++ trunk/HISTORY 2007/10/08 16:22:32 42 @@ -1,4 +1,4 @@ -$Id: HISTORY,v 1.1539 2007/05/01 04:03:51 debug Exp $ +$Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $ Changelog for GXemul: --------------------- @@ -3461,3 +3461,153 @@ ============== RELEASE 0.4.5.1 ============== +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 ============== +