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$Id: HISTORY,v 1.1539 2007/05/01 04:03:51 debug Exp $ |
$Id: HISTORY,v 1.1632 2007/09/11 21:46:35 debug Exp $ |
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Changelog for GXemul: |
Changelog for GXemul: |
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--------------------- |
--------------------- |
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============== RELEASE 0.4.5.1 ============== |
============== RELEASE 0.4.5.1 ============== |
| 3463 |
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|
| 3464 |
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20070501 Continuing a little on m88k disassembly (control registers, |
| 3465 |
|
more instructions). |
| 3466 |
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Adding a dummy mvme88k machine mode. |
| 3467 |
|
20070502 Re-adding MIPS load/store alignment exceptions. |
| 3468 |
|
20070503 Implementing more of the M88K disassembly code. |
| 3469 |
|
20070504 Adding disassembly of some more M88K load/store instructions. |
| 3470 |
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Implementing some relatively simple M88K instructions (br.n, |
| 3471 |
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xor[.u] imm, and[.u] imm). |
| 3472 |
|
20070505 Implementing M88K three-register and, or, xor, and jmp[.n], |
| 3473 |
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bsr[.n] including function call trace stuff. |
| 3474 |
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Applying a patch from Bruce M. Simpson which implements the |
| 3475 |
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SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in |
| 3476 |
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the yamon PROM emulation. |
| 3477 |
|
20070506 Implementing M88K bb0[.n] and bb1[.n], and skeletons for |
| 3478 |
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ldcr and stcr (although no control regs are implemented yet). |
| 3479 |
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20070509 Found and fixed the bug which caused Linux for QEMU_MIPS to |
| 3480 |
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stop working in 0.4.5.1: It was a faulty change to the MIPS |
| 3481 |
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'sc' and 'scd' instructions I made while going through gcc -W |
| 3482 |
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warnings on 20070428. |
| 3483 |
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20070510 Updating the Linux/QEMU_MIPS section in guestoses.html to |
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use mips-test-0.2.tar.gz instead of 0.1. |
| 3485 |
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A big thank you to Miod Vallat for sending me M88K manuals. |
| 3486 |
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Implementing more M88K instructions (addu, subu, div[u], mulu, |
| 3487 |
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ext[u], clr, set, cmp). |
| 3488 |
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20070511 Fixing bugs in the M88K "and" and "and.u" instructions (found |
| 3489 |
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by comparing against the manual). |
| 3490 |
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Implementing more M88K instructions (mask[.u], mak, bcnd (auto- |
| 3491 |
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generated)) and some more control register details. |
| 3492 |
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Cleanup: Removing the experimental AVR emulation mode and |
| 3493 |
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corresponding devices; AVR emulation wasn't really meaningful. |
| 3494 |
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Implementing autogeneration of most M88K loads/stores. The |
| 3495 |
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rectangle drawing demo (with -O0) for M88K runs :-) |
| 3496 |
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Beginning on M88K exception handling. |
| 3497 |
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More M88K instructions: tb0, tb1, rte, sub, jsr[.n]. |
| 3498 |
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Adding some skeleton MVME PROM ("BUG") emulation. |
| 3499 |
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20070512 Fixing a bug in the M88K cmp instruction. |
| 3500 |
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Adding the M88K lda (scaled register) instruction. |
| 3501 |
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Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores. |
| 3502 |
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Removing the unused tick_hz stuff from the machine struct. |
| 3503 |
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Implementing the M88K xmem instruction. OpenBSD/mvme88k gets |
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far enough to display the Copyright banner :-) |
| 3505 |
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Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1. |
| 3506 |
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Adding a dev_mvme187, for MVME187-specific devices/registers. |
| 3507 |
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OpenBSD/mvme88k prints more boot messages. :) |
| 3508 |
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20070515 Continuing on MVME187 emulation (adding more devices, beginning |
| 3509 |
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on the CMMUs, etc). |
| 3510 |
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Adding the M88K and.c, xor.c, and or.c instructions, and making |
| 3511 |
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sure that mul, div, etc cause exceptions if executed when SFD1 |
| 3512 |
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is disabled. |
| 3513 |
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20070517 Continuing on M88K and MVME187 emulation in general; moving |
| 3514 |
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the CMMU registers to the CPU struct, separating dev_pcc2 from |
| 3515 |
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dev_mvme187, and beginning on memory_m88k.c (BATC and PATC). |
| 3516 |
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Fixing a bug in 64-bit (32-bit pairs) M88K fast stores. |
| 3517 |
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Implementing the clock part of dev_mk48txx. |
| 3518 |
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Implementing the M88K fstcr and xcr instructions. |
| 3519 |
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Implementing m88k_cpu_tlbdump(). |
| 3520 |
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Beginning on the implementation of a separate address space |
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for M88K .usr loads/stores. |
| 3522 |
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20070520 Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK |
| 3523 |
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Dnard, and Zaurus machine modes. |
| 3524 |
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Experimenting with dyntrans to_be_translated read-ahead. It |
| 3525 |
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seems to give a very small performance increase for MIPS |
| 3526 |
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emulation, but a large performance degradation for SuperH. Hm. |
| 3527 |
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20070522 Disabling correct SuperH ITLB emulation; it does not seem to be |
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necessary in order to let SH4 guest OSes run, and it slows down |
| 3529 |
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userspace code. |
| 3530 |
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Implementing "samepage" branches for SuperH emulation, and some |
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other minor speed hacks. |
| 3532 |
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20070525 Continuing on M88K memory-related stuff: exceptions, memory |
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transaction register contents, etc. |
| 3534 |
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Implementing the M88K subu.ci instruction. |
| 3535 |
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Removing the non-working (skeleton) Iyonix machine mode. |
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OpenBSD/mvme88k reaches userland :-), starts executing |
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/sbin/init's instructions, and issues a few syscalls, before |
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crashing. |
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20070526 Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects |
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the correct time-of-day. |
| 3541 |
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Implementing a generic IRQ controller for the test machines |
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(dev_irqc), similar to a proposed patch from Petr Stepan. |
| 3543 |
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Experimenting some more with translation read-ahead. |
| 3544 |
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Adding an "expect" script for automated OpenBSD/landisk |
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install regression/performance tests. |
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20070527 Adding a dummy mmEye (SH3) machine mode skeleton. |
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FINALLY found the strange M88K bug I have been hunting: I had |
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not emulated the SNIP value for exceptions occurring in |
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branch delay slots correctly. |
| 3550 |
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Implementing correct exceptions for 64-bit M88K loads/stores. |
| 3551 |
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Address to symbol lookups are now disabled when M88K is |
| 3552 |
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running in usermode (because usermode addresses don't have |
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anything to do with supervisor addresses). |
| 3554 |
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20070531 Removing the mmEye machine mode skeleton. |
| 3555 |
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20070604 Some minor code cleanup. |
| 3556 |
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20070605 Moving src/useremul.c into a subdir (src/useremul/), and |
| 3557 |
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cleaning up some more legacy constructs. |
| 3558 |
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Adding -Wstrict-aliasing and -fstrict-aliasing detection to |
| 3559 |
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the configure script. |
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20070606 Adding a check for broken GCC on Solaris to the configure |
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script. (GCC 3.4.3 on Solaris cannot handle static variables |
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which are initialized to 0 or NULL. :-/) |
| 3563 |
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Removing the old (non-working) ARC emulation modes: NEC RD94, |
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R94, R96, and R98, and the last traces of Olivetti M700 and |
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Deskstation Tyne. |
| 3566 |
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Removing the non-working skeleton WDSC device (dev_wdsc). |
| 3567 |
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20070607 Thinking about how to use the host's cc + ld at runtime to |
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generate native code. (See experiments/native_cc_ld_test.i |
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for an example.) |
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20070608 Adding a program counter sampling timer, which could be useful |
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for native code generation experiments. |
| 3572 |
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The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR |
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should always be set, to allow a 5000/200 PROM to boot. |
| 3574 |
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20070609 Moving out breakpoint details from the machine struct into |
| 3575 |
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a helper struct, and removing the limit on max nr of |
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breakpoints. |
| 3577 |
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20070610 Moving out tick functions into a helper struct as well (which |
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also gets rid of the max limit). |
| 3579 |
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20070612 FINALLY figured out why Debian/DECstation stopped working when |
| 3580 |
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translation read-ahead was enabled: in src/memory_rw.c, the |
| 3581 |
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call to invalidate_code_translation was made also if the |
| 3582 |
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memory access was an instruction load (if the page was mapped |
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as writable); it shouldn't be called in that case. |
| 3584 |
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20070613 Implementing some more MIPS32/64 revision 2 instructions: di, |
| 3585 |
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ei, ext, dext, dextm, dextu, and ins. |
| 3586 |
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20070614 Implementing an instruction combination for the NetBSD/arm |
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idle loop (making the host not use any cpu if NetBSD/arm |
| 3588 |
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inside the emulator is not using any cpu). |
| 3589 |
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Increasing the nr of ARM VPH entries from 128 to 384. |
| 3590 |
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20070615 Removing the ENABLE_arch stuff from the configure script, so |
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that all included architectures are included in both release |
| 3592 |
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and development builds. |
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Moving memory related helper functions from misc.c to memory.c. |
| 3594 |
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Adding preliminary instructions for netbooting NetBSD/pmppc to |
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guestoses.html; it doesn't work yet, there are weird timeouts. |
| 3596 |
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Beginning a total rewrite of the userland emulation modes |
| 3597 |
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(removing all emulation modes, beginning from scratch with |
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NetBSD/MIPS and FreeBSD/Alpha only). |
| 3599 |
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20070616 After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was |
| 3600 |
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only cleared for the last segment when transmitting, not all |
| 3601 |
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segments), NetBSD/pmppc boots with root-on-nfs without the |
| 3602 |
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timeouts. Updating guestoses.html. |
| 3603 |
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Removing the skeleton PSP (Playstation Portable) mode. |
| 3604 |
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Moving X11-related stuff in the machine struct into a helper |
| 3605 |
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struct. |
| 3606 |
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Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION |
| 3607 |
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macro (which prints a meaningful error message). |
| 3608 |
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Adding a COMMENT to each machine and device (for automagic |
| 3609 |
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.index comment generation). |
| 3610 |
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Doing regression testing for the next release. |
| 3611 |
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|
| 3612 |
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============== RELEASE 0.4.6 ============== |
| 3613 |
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|
| 3614 |
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20070616 Implementing the MIPS32/64 revision 2 "ror" instruction. |
| 3615 |
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20070617 Adding a struct for each physpage which keeps track of which |
| 3616 |
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ranges within that page (base offset, length) that are |
| 3617 |
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continuously translatable. When running with native code |
| 3618 |
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generation enabled (-b), a range is added after each read- |
| 3619 |
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ahead loop. |
| 3620 |
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Experimenting with using the physical program counter sample |
| 3621 |
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data (implemented 20070608) together with the "translatable |
| 3622 |
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range" information, to figure out which physical address ranges |
| 3623 |
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would be worth translating to native code (if the number of |
| 3624 |
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samples falling within a range is above a certain threshold). |
| 3625 |
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20070618 Adding automagic building of .index comment files for |
| 3626 |
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src/file/, src/promemul/, src src/useremul/ as well. |
| 3627 |
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Adding a "has been translated" bit to the ranges, so that only |
| 3628 |
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not-yet-translated ranges will be sampled. |
| 3629 |
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20070619 Moving src/cpu.c and src/memory_rw.c into src/cpus/, |
| 3630 |
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src/device.c into src/devices/, and src/machine.c into |
| 3631 |
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src/machines/. |
| 3632 |
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Creating a skeleton cc/ld native backend module; beginning on |
| 3633 |
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the function which will detect cc command line, etc. |
| 3634 |
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20070620 Continuing on the native code generation infrastructure. |
| 3635 |
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20070621 Moving src/x11.c and src/console.c into a new src/console/ |
| 3636 |
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subdir (for everything that is console or framebuffer related). |
| 3637 |
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Moving src/symbol*.c into a new src/symbol/, which should |
| 3638 |
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contain anything that is symbol handling related. |
| 3639 |
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20070624 Making the program counter sampling threshold a "settings |
| 3640 |
|
variable" (sampling_threshold), i.e. it can now be changed |
| 3641 |
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during runtime. |
| 3642 |
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Switching the RELEASE notes format from plain text to HTML. |
| 3643 |
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If the TMPDIR environment variable is set, it is used instead |
| 3644 |
|
of "/tmp" for temporary files. |
| 3645 |
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Continuing on the cc/ld backend: simple .c code is generated, |
| 3646 |
|
the compiler and linker are called, etc. |
| 3647 |
|
Adding detection of host architecture to the configure script |
| 3648 |
|
(again), and adding icache invalidation support (only |
| 3649 |
|
implemented for Alpha hosts so far). |
| 3650 |
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20070625 Simplifying the program counter sampling mechanism. |
| 3651 |
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20070626 Removing the cc/ld native code generation stuff, program |
| 3652 |
|
counter sampling, etc; it would not have worked well in the |
| 3653 |
|
general case. |
| 3654 |
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20070627 Removing everything related to native code generation. |
| 3655 |
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20070629 Removing the (practically unusable) support for multiple |
| 3656 |
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emulations. (The single emulation allowed now still supports |
| 3657 |
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multiple simultaneous machines, as before.) |
| 3658 |
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Beginning on PCCTWO and M88K interrupts. |
| 3659 |
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20070723 Adding a dummy skeleton for emulation of M32R processors. |
| 3660 |
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20070901 Fixing a warning found by "gcc version 4.3.0 20070817 |
| 3661 |
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(experimental)" on amd64. |
| 3662 |
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20070905 Removing some more traces of the old "multiple emulations" |
| 3663 |
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code. |
| 3664 |
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Also looking in /usr/local/include and /usr/local/lib for |
| 3665 |
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X11 libs, when running configure. |
| 3666 |
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20070909 Minor updates to the guest OS install instructions, in |
| 3667 |
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preparation for the NetBSD 4.0 release. |
| 3668 |
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20070918 More testing of NetBSD 4.0 RC1. |
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