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$Id: TODO,v 1.489 2007/05/01 04:05:06 debug Exp $ |
$Id: TODO,v 1.536 2007/06/15 22:30:17 debug Exp $ |
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-------------------------------------------- |
Some things, in no specific order, that I'd like to fix: |
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(Some items in this list are perhaps already fixed.) |
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Testing for the next release (0.4.5.1): |
M88K: |
| 7 |
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o) Neither NIP nor FIP valid in rte? |
| 8 |
TEST DISK OVERLAY IMAGES |
o) FIP != NIP + 4, in rte! (Simulate delayed branch stuff.) |
| 9 |
TEST LANDISK/SUPERH EMULATION MODES |
o) cpu_dyntrans.c: MEMORY_USER_ACCESS implementation for M88K! |
| 10 |
REGRESSION TESTS FOR ALL OTHER SUPPORTED GUEST OSES |
o) xmem: Set transaction registers! |
| 11 |
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o) CMMUs: |
| 12 |
# NetBSD/pmax 3.1 or 1.6.2 OK |
o) Translation invalidations, could be optimized. |
| 13 |
# NetBSD/arc 1.6.2 OK |
o) Move initialization from dev_mvme187 to somewhere |
| 14 |
# NetBSD/hpcmips 3.1 OK |
more reasonable? |
| 15 |
# NetBSD/cobalt 3.1 OK |
o) Instruction trace by using bits of ??IP control regs. |
| 16 |
# NetBSD/evbmips 3.1 OK |
o) Interrupts (these are machine dependent, though). |
| 17 |
# NetBSD/algor 3.1 OK |
o) Implement devices etc. for one or more machine modes, |
| 18 |
# NetBSD/sgimips 3.1 OK |
to get some guest OS running. OpenBSD/mvme88k on MVME187 |
| 19 |
# NetBSD/cats 3.1 OK |
seems to be the smartest path to follow for now. |
| 20 |
# NetBSD/evbarm 2.1 OK |
o) VME bus device |
| 21 |
# NetBSD/netwinder 3.1 OK |
o) PCC2 |
| 22 |
# NetBSD/prep 2.1 OK |
o) Cirrus Logic serial port controller |
| 23 |
# NetBSD/macppc 3.1 OK |
o) Instruction disassembly, and implementation: |
| 24 |
# NetBSD/dreamcast 3.1 MD OK |
o) See http://www.panggih.staff.ugm.ac.id/download/GCC/info/gcc.i5 |
| 25 |
# NetBSD/dreamcast 3.1 LiveCD OK |
for some strange cases of when "div" can fail (?) |
| 26 |
# Linux/dreamcast Live CD OK |
o) Floating point stuff |
| 27 |
# OpenBSD/pmax 2.8-BETA not tested because of lack of time |
o) "Graphics" instructions (M88110-specific) |
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# OpenBSD/cats 4.0 OK |
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# OpenBSD/landisk 4.1 OK |
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# Ultrix/RISC 4.5 OK |
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# Sprite for DECstation OK |
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# Debian GNU/Linux for pmax not tested because of lack of time |
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Optional: |
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# OpenBSD/sgi FAILED to boot after setup (as expected) |
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-------------------------------------------- |
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Some things, in totally random order, that I'd like to fix: |
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(Some items in this list are possibly out-of-date by now.) |
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Dyntrans: |
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x) Instruction combination collisions? How to avoid easily... |
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x) Think about how to do both SHmedia and SHcompact in a reasonable |
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way! (Or AMD64 long/protected/real, for that matter.) |
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x) 68K emulation; think about how to do variable instruction |
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lengths across page boundaries. |
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x) Dyntrans with valgrind-inspired memory checker. (In memory_rw, |
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it would be reasonably simple to add; in each individual fast |
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load/store routine = a lot more work, and it would become |
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kludgy very fast.) |
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x) Dyntrans with SMP... lots of work to be done here. |
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x) Dyntrans with cache emulation... lots of work here as well. |
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x) Remove the concept of base RAM completely; it would be more |
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generic to allow RAM devices to be used "anywhere". |
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o) dev_mp doesn't work well with dyntrans yet |
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o) In general, IPIs, CAS, LL/SC etc must be made to work with dyntrans |
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x) Redesign/rethink the delay slot mechanism used for e.g. MIPS, |
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so that it caches a translation (that is, an instruction |
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word and the instr_call it was translated to the last |
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time), so that it doesn't need to do slow |
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to_be_translated for each end of page? |
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x) Program Counter statistics: |
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Per machine? What about SMP? All data to the same file? |
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A debugger command should be possible to use to enable/ |
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disable statistics gathering. |
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Configuration file option! |
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x) Breakpoints: |
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o) Physical vs virtual addresses! |
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o) 32-bit vs 64-bit sign extension for MIPS, and others? |
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x) INVALIDATION should cause translations in _all_ cpus to be |
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invalidated, e.g. on a write to a write-protected page |
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(containing code) |
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x) 16-bit encodings? (MIPS16, ARM Thumb, 32-bit SH on SH64) |
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x) Lots of other stuff: see src/cpus/README_DYNTRANS |
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x) Native code generation backends: |
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o) think carefully about this. |
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o) simple syntax for emitting opcodes; backend implementation |
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must be optional, so I don't have to write more code |
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than necessary. after all, the non-native (C) code should |
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always work. |
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o) convert into native code only after an entire |
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block has been translated? probably best. |
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o) the "almost native" opcodes may be rearranged, |
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"peep-hole optimized", etc. and then as a separate step |
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this list of almost native opcodes is written out |
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as native code. |
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o) think about delay slots at the end of a block! |
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o) x86/amd64 code generator can be very similar... perhaps |
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o) NOTE that generation is per _ABI_, not per host arch! |
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the configure script must detect ABI!!! |
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o) branches to already translated code blocks can |
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link the blocks together |
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o) load/store are the most important to optimize |
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Simple Valgrind-like checks? |
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o) Mark every address with bits which tell whether or not the address |
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has been written to. |
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o) What should happen when programs are loaded? Text/data, bss (zero |
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filled). But stack space and heap is uninitialized. |
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o) Uninitialized local variables: |
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A load from a place on the stack which has not previously |
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been stored to => warning. Increasing the stack pointer using |
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any available means should reset the memory to uninitialized. |
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o) If calls to malloc() and free() can be intercepted: |
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o) Access to a memory area after free() => warning. |
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o) Memory returned by malloc() is marked as not-initialized. |
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o) Non-passive, but good to have: Change the argument |
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given to malloc, to return a slightly larger memory |
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area, i.e. margin_before + size + margin_after, |
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and return the pointer + margin_before. |
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Any access to the margin_before or _after space results |
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in warnings. (free() must be modified to free the |
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actually allocated address.) |
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MIPS: |
MIPS: |
| 30 |
o) Nicer MIPS status bits in register dumps. |
o) Nicer MIPS status bits in register dumps. |
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o) Alignment exceptions. |
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| 31 |
o) Floating point exception correctness. |
o) Floating point exception correctness. |
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o) Fix this? Triggered by NetBSD/sgimips? Hm: |
o) Fix this? Triggered by NetBSD/sgimips? Hm: |
| 33 |
to_be_translated(): TODO: unimplemented instruction: |
to_be_translated(): TODO: unimplemented instruction: |
| 35 |
o) Some more work on opcodes. |
o) Some more work on opcodes. |
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x) MIPS64 revision 2. |
x) MIPS64 revision 2. |
| 37 |
o) Find out which actual CPUs implement the rev2 ISA! |
o) Find out which actual CPUs implement the rev2 ISA! |
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o) DINS, DINSM, DINSU etc |
| 39 |
o) DROTR32 and similar MIPS64 rev 2 instructions, |
o) DROTR32 and similar MIPS64 rev 2 instructions, |
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which have a rotation bit which differs from |
which have a rotation bit which differs from |
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previous ISAs. |
previous ISAs. |
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o) EI and DI instructions for MIPS64/32 rev 2. |
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NOTE: These are _NOT_ the same as for R5900! |
|
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x) _MAYBE_ TX79 and R5900 actually differ in their |
x) _MAYBE_ TX79 and R5900 actually differ in their |
| 43 |
opcodes? Check this carefully! |
opcodes? Check this carefully! |
| 44 |
o) Dyntrans: Count register updates are probably not 100% correct yet. |
o) Dyntrans: Count register updates are probably not 100% correct yet. |
| 45 |
o) Refactor code for performance and readability/maintainability. |
o) Refactor code for performance and readability/maintainability. |
| 46 |
o) (Re)implement 128-bit loads/stores for R5900. |
o) (Re)implement 128-bit loads/stores for R5900. |
| 47 |
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o) Coprocessor 1x (i.e. 3) should cause cp1 exceptions, not 3? |
| 48 |
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(See http://lists.gnu.org/archive/html/qemu-devel/2007-05/msg00005.html) |
| 49 |
o) R4000 and others: |
o) R4000 and others: |
| 50 |
x) watchhi/watchlo exceptions, and other exception |
x) watchhi/watchlo exceptions, and other exception |
| 51 |
handling details |
handling details |
| 52 |
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o) MIPS 5K* have 42 physical address bits, not 40/44? |
| 53 |
o) R10000 and others: (R12000, R14000 ?) |
o) R10000 and others: (R12000, R14000 ?) |
| 54 |
x) The code before the line |
x) The code before the line |
| 55 |
/* reg[COP0_PAGEMASK] = cpu->cd.mips.coproc[0]->tlbs[0].mask & PAGEMASK_MASK; */ |
/* reg[COP0_PAGEMASK] = cpu->cd.mips.coproc[0]->tlbs[0].mask & PAGEMASK_MASK; */ |
| 64 |
(http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/hdwr/bks/SGI_Developer/books/R10K_UM/sgi_html/t5.Ver.2.0.book_284.html) |
(http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/hdwr/bks/SGI_Developer/books/R10K_UM/sgi_html/t5.Ver.2.0.book_284.html) |
| 65 |
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SuperH: |
SuperH: |
| 67 |
x) SH4 performance is VERY low when running user-space instructions, |
x) Auto-generation of loads/stores! This should get rid of at least |
| 68 |
because I actually simulate the 4-entry ITLB as being separate |
the endianness check in each load/store. |
| 69 |
from the 64-entry DTLB. This is correct, but VERY slow. I need |
x) Experiment with whether or not correct ITLB emulation is |
| 70 |
to experiment with _not_ simulating it in too much detail. |
actually needed. (20070522: I'm turning it off today.) |
| 71 |
x) SH4 interrupt controller: |
x) SH4 interrupt controller: |
| 72 |
x) MASKING should be possible! |
x) MASKING should be possible! |
| 73 |
x) SH4 DMA (0xffa00000) |
x) SH4 DMA (0xffa00000) |
| 78 |
x) Instruction tracing should include symbols for branch targets, |
x) Instruction tracing should include symbols for branch targets, |
| 79 |
and so on, to make the output more human readable. |
and so on, to make the output more human readable. |
| 80 |
x) SH3-specific devices: Pretty much everything! |
x) SH3-specific devices: Pretty much everything! |
| 81 |
x) NetBSD/evbsh3, mmeye, hpcsh! Linux? |
x) NetBSD/evbsh3, hpcsh! Linux? |
|
x) Replace pc-relative loads with immediate load, if within the |
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same page. (Similar to the same optimization for ARM.) |
|
| 82 |
x) Floating point speed! |
x) Floating point speed! |
| 83 |
x) Floating point exception correctness. |
x) Floating point exception correctness. |
| 84 |
x) NetBSD HEAD (as of April 2007) hangs during bootup, because it |
x) NetBSD HEAD (as of April 2007) hangs during bootup, because it |
| 135 |
o) SPARC v8, v7 etc? |
o) SPARC v8, v7 etc? |
| 136 |
o) More machine modes and devices. |
o) More machine modes and devices. |
| 137 |
|
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Debugger: |
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o) How does SMP debugging work? Does it simply use "threads"? |
|
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What if the guest OS (running on an emulated SMP machine) |
|
|
has a usertask running, with userland threads? |
|
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o) Try to make the debugger more modular and, if possible, reentrant! |
|
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o) Remove the emul command? (But show network info if showing |
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machines?) |
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o) Evaluate expressions within []? That would allow stuff like |
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cpu[x] where x is an expression. |
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o) Settings: |
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x) Special handlers for Write! |
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+) MIPS coproc regs |
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+) Alpha/MIPS/SPARC zero registers |
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+) x86 64/32/16-bit registers |
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x) Value formatter for resulting output. |
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o) see src/debugger.c for more |
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| 138 |
POWER/PowerPC: |
POWER/PowerPC: |
| 139 |
x) Fix DECR timer speed, so it matches the host. |
x) Fix DECR timer speed, so it matches the host. |
| 140 |
x) NetBSD/prep 3.x triggers a possible bug in the emulator: |
x) NetBSD/prep 3.x triggers a possible bug in the emulator: |
| 176 |
x) Mouse/pad support! :) |
x) Mouse/pad support! :) |
| 177 |
x) A NIC? (As a PCMCIA device?) |
x) A NIC? (As a PCMCIA device?) |
| 178 |
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M88K: |
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o) Everything. :) |
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o) More instruction disassembly! |
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o) Implement more instructions. |
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o) has-delay-slot (for debugging) |
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o) Find manuals! |
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o) MMU stuff |
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o) Exceptions |
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o) FPU |
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o) Control registers |
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AVR: |
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o) Everything. |
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| 179 |
ARM: |
ARM: |
| 180 |
o) See netwinder_reset() in NetBSD; the current "an internal error |
o) See netwinder_reset() in NetBSD; the current "an internal error |
| 181 |
occured" message after reboot/halt is too ugly. |
occured" message after reboot/halt is too ugly. |
| 182 |
o) ARM "wait"-like instruction? |
o) Generic ARM "wait"-like instruction? |
| 183 |
o) try to get netbsd/evbarm 3.x or 4.x running (iq80321) |
o) try to get netbsd/evbarm 3.x or 4.x running (iq80321) |
| 184 |
o) make the xscale counter registers (ccnt) work |
o) make the xscale counter registers (ccnt) work |
| 185 |
o) make the ata controller usable for FreeBSD! |
o) make the ata controller usable for FreeBSD! |
|
o) Zaurus emulation: |
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x) OpenBSD/zaurus |
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x) NetBSD/zaurus? See the following URL: |
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http://mail-index.netbsd.org/port-arm/2006/11/19/0000.html |
|
| 186 |
o) Debian/cats crashes because of unimplemented coproc stuff. |
o) Debian/cats crashes because of unimplemented coproc stuff. |
| 187 |
fix this? |
fix this? |
| 188 |
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| 197 |
halt(); |
halt(); |
| 198 |
} |
} |
| 199 |
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| 200 |
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Debugger: |
| 201 |
|
o) How does SMP debugging work? Does it simply use "threads"? |
| 202 |
|
What if the guest OS (running on an emulated SMP machine) |
| 203 |
|
has a usertask running, with userland threads? |
| 204 |
|
o) Try to make the debugger more modular and, if possible, reentrant! |
| 205 |
|
o) Remove the emul command? (But show network info if showing |
| 206 |
|
machines?) |
| 207 |
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o) Memory dumps should be able to dump both physical and |
| 208 |
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virtual emulated memory. |
| 209 |
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o) Evaluate expressions within []? That would allow stuff like |
| 210 |
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cpu[x] where x is an expression. |
| 211 |
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o) "pc = pc + 4" doesn't work! Bug. Should work. ("pc=pc+4" works.) |
| 212 |
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o) Settings: |
| 213 |
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x) Special handlers for Write! |
| 214 |
|
+) MIPS coproc regs |
| 215 |
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+) Alpha/MIPS/SPARC zero registers |
| 216 |
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+) x86 64/32/16-bit registers |
| 217 |
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x) Value formatter for resulting output. |
| 218 |
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o) Call stack display (back-trace) of emulated programs. |
| 219 |
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o) Nicer looking output of register dumps, floating point registers, |
| 220 |
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etc. Warn about weird/invalid register contents. |
| 221 |
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o) Ctrl-C doesn't enter the debugger on some OSes (HP-UX?)... |
| 222 |
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|
| 223 |
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Dyntrans: |
| 224 |
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x) For 32-bit emulation modes, that have emulated TLBs: tlbindex |
| 225 |
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arrays of mapped pages? Things to think about: |
| 226 |
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x) Only 32-bit mode! (64-bit => too much code) |
| 227 |
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x) One array for global pages, and one array _PER ASID_, |
| 228 |
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for those archs that support that. On M88K, there should |
| 229 |
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be one array for userspace, and one for supervisor, etc. |
| 230 |
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x) Larger-than-4K-pages must fill several bits in the array. |
| 231 |
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x) No TLB search will be necessary. |
| 232 |
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x) Total host space used, for 4 KB pages: 1 MB per table, |
| 233 |
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i.e. 65 MB for 32-bit MIPS, 2 MB for M88K, if one byte |
| 234 |
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is used as the tlb index. |
| 235 |
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x) (The index is actually +1, so that 0 means no hit.) |
| 236 |
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x) "Merge" the cur_physpage and cur_ic_page variables/pointers to |
| 237 |
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one? I.e. change cur_ic_page to cur_physpage.ic_page or something. |
| 238 |
|
x) Instruction combination collisions? How to avoid easily... |
| 239 |
|
x) Think about how to do both SHmedia and SHcompact in a reasonable |
| 240 |
|
way! (Or AMD64 long/protected/real, for that matter.) |
| 241 |
|
x) 68K emulation; think about how to do variable instruction |
| 242 |
|
lengths across page boundaries. |
| 243 |
|
x) Dyntrans with valgrind-inspired memory checker. (In memory_rw, |
| 244 |
|
it would be reasonably simple to add; in each individual fast |
| 245 |
|
load/store routine = a lot more work, and it would become |
| 246 |
|
kludgy very fast.) |
| 247 |
|
x) Dyntrans with SMP... lots of work to be done here. |
| 248 |
|
x) Dyntrans with cache emulation... lots of work here as well. |
| 249 |
|
x) Remove the concept of base RAM completely; it would be more |
| 250 |
|
generic to allow RAM devices to be used "anywhere". |
| 251 |
|
o) dev_mp doesn't work well with dyntrans yet |
| 252 |
|
o) In general, IPIs, CAS, LL/SC etc must be made to work with dyntrans |
| 253 |
|
x) Redesign/rethink the delay slot mechanism used for e.g. MIPS, |
| 254 |
|
so that it caches a translation (that is, an instruction |
| 255 |
|
word and the instr_call it was translated to the last |
| 256 |
|
time), so that it doesn't need to do slow |
| 257 |
|
to_be_translated for each end of page? |
| 258 |
|
x) Program Counter statistics: |
| 259 |
|
Per machine? What about SMP? All data to the same file? |
| 260 |
|
A debugger command should be possible to use to enable/ |
| 261 |
|
disable statistics gathering. |
| 262 |
|
Configuration file option! |
| 263 |
|
x) Breakpoints: |
| 264 |
|
o) Physical vs virtual addresses! |
| 265 |
|
o) 32-bit vs 64-bit sign extension for MIPS, and others? |
| 266 |
|
x) INVALIDATION should cause translations in _all_ cpus to be |
| 267 |
|
invalidated, e.g. on a write to a write-protected page |
| 268 |
|
(containing code) |
| 269 |
|
x) 16-bit encodings? (MIPS16, ARM Thumb, 32-bit SH on SH64) |
| 270 |
|
x) Lots of other stuff: see src/cpus/README_DYNTRANS |
| 271 |
|
x) Native code generation backends: |
| 272 |
|
o) calculate at runtime whether or not chunks of emulated |
| 273 |
|
(physical) memory are worth translating to native code |
| 274 |
|
(it is assumed that it has high overhead) |
| 275 |
|
o) experiment with calling the host's cc and ld externally; |
| 276 |
|
extremely high overhead, but could be interesting none- |
| 277 |
|
theless. |
| 278 |
|
o) experiment with using LLVM, or GNU Lightning? |
| 279 |
|
o) Important cases to think about: |
| 280 |
|
x) loads/stores |
| 281 |
|
x) delay branches |
| 282 |
|
x) other kinds of calls, branches |
| 283 |
|
o) branches to already translated code blocks can |
| 284 |
|
link the blocks together (block-chaining), although |
| 285 |
|
I'll probably want to wait with this until other |
| 286 |
|
things work. |
| 287 |
|
o) The first tests should be done with "testm88k", because |
| 288 |
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that does not affect other modes. |
| 289 |
|
|
| 290 |
|
------------------------------------------------------------------------------- |
| 291 |
|
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| 292 |
|
Performance comparison when emulating the QEMU_MIPS machine (QEMU's default |
| 293 |
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MIPS machine mode): |
| 294 |
|
|
| 295 |
|
mips-test-0.2: |
| 296 |
|
-------------- |
| 297 |
|
|
| 298 |
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1. while true; do ls -l > /dev/null; echo -n .; done, 80x36 dots |
| 299 |
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2. while true; do /usr/bin/md5sum /usr/bin/* > /dev/null; echo -n .; done, 80 dots |
| 300 |
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3. while true; do grep hej lib/libc.so.6 > /dev/null; echo -n .; done, 80 dots |
| 301 |
|
|
| 302 |
|
Test 1 Test 2 Test 3 |
| 303 |
|
------ ------ ------ |
| 304 |
|
QEMU 0.9.0: 2 min 20 sec 45 sec 4 min 41 seconds |
| 305 |
|
GXemul-20070608: 1 min 59 sec 3 min 18 sec 18 min 10 seconds [A] |
| 306 |
|
|
| 307 |
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| 308 |
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[A] = Normal portable dyntrans, no native code generation. |
| 309 |
|
|
| 310 |
|
------------------------------------------------------------------------------- |
| 311 |
|
|
| 312 |
|
|
| 313 |
|
Simple Valgrind-like checks? |
| 314 |
|
o) Mark every address with bits which tell whether or not the address |
| 315 |
|
has been written to. |
| 316 |
|
o) What should happen when programs are loaded? Text/data, bss (zero |
| 317 |
|
filled). But stack space and heap is uninitialized. |
| 318 |
|
o) Uninitialized local variables: |
| 319 |
|
A load from a place on the stack which has not previously |
| 320 |
|
been stored to => warning. Increasing the stack pointer using |
| 321 |
|
any available means should reset the memory to uninitialized. |
| 322 |
|
o) If calls to malloc() and free() can be intercepted: |
| 323 |
|
o) Access to a memory area after free() => warning. |
| 324 |
|
o) Memory returned by malloc() is marked as not-initialized. |
| 325 |
|
o) Non-passive, but good to have: Change the argument |
| 326 |
|
given to malloc, to return a slightly larger memory |
| 327 |
|
area, i.e. margin_before + size + margin_after, |
| 328 |
|
and return the pointer + margin_before. |
| 329 |
|
Any access to the margin_before or _after space results |
| 330 |
|
in warnings. (free() must be modified to free the |
| 331 |
|
actually allocated address.) |
| 332 |
|
|
| 333 |
Better CD Image file support: |
Better CD Image file support: |
| 334 |
x) Support CD formats that contain more than 1 track, e.g. |
x) Support CD formats that contain more than 1 track, e.g. |
| 335 |
CDI files (?). These can then contain a mixture of e.g. sound |
CDI files (?). These can then contain a mixture of e.g. sound |
| 380 |
is another option (easier to implement, but very very slow). |
is another option (easier to implement, but very very slow). |
| 381 |
|
|
| 382 |
Documentation: |
Documentation: |
| 383 |
|
x) Update the documentation regarding the testmachine interrupts. |
| 384 |
x) Note about sandboxing/security: |
x) Note about sandboxing/security: |
| 385 |
Not all emulated instructions fail in the way they would |
Not all emulated instructions fail in the way they would |
| 386 |
do on real hardware (e.g. a userspace program writing to |
do on real hardware (e.g. a userspace program writing to |
| 414 |
that use 3MAX into using CATS or hpcmips? (To remove the need |
that use 3MAX into using CATS or hpcmips? (To remove the need |
| 415 |
to use a raw ffs partition, using up all of the disk image.) |
to use a raw ffs partition, using up all of the disk image.) |
| 416 |
|
|
|
More generic out_of_memory error reporting, and check everywhere! |
|
|
Causes: OpenBSD has low default limits for normal users. |
|
|
Host is 32-bit? (32-bit hosts are limited to 4 GB or less |
|
|
of userspace memory.) |
|
|
You are actually low on RAM. (As trivial as this might sound, |
|
|
Unix systems usually allow processes to allocate virtual |
|
|
memory beyond the amount of RAM in the machine.) |
|
|
|
|
| 417 |
The Device subsystem: |
The Device subsystem: |
| 418 |
x) allow devices to be moved and/or changed in size (down to a |
x) allow devices to be moved and/or changed in size (down to a |
| 419 |
minimum size, etc, or up to a max size); if there is a collision, |
minimum size, etc, or up to a max size); if there is a collision, |
| 447 |
Clocks and timers: |
Clocks and timers: |
| 448 |
x) Fix the PowerPC DECR interrupt speed! (MacPPC and PReP speed, etc.) |
x) Fix the PowerPC DECR interrupt speed! (MacPPC and PReP speed, etc.) |
| 449 |
x) DON'T HARDCODE 100 HZ IN cpu_mips_coproc.c! |
x) DON'T HARDCODE 100 HZ IN cpu_mips_coproc.c! |
| 450 |
x) Test the 8253? Right now it doesn't seem to be used? |
x) NetWinder timeofday is incorrect! Huh? grep -R for ta_rtc_read in |
| 451 |
x) NetWinder timeofday is incorrect! It seems to be exactly |
NetBSD sources; it doesn't seem to be initialized _AT ALL_?! |
|
1 day ahead of actual time? |
|
| 452 |
x) Cobalt TOD is incorrect! |
x) Cobalt TOD is incorrect! |
| 453 |
x) Go through all other machines, one by one, and fix them. |
x) Go through all other machines, one by one, and fix them. |
| 454 |
|
|
| 467 |
o) non-IEEE modes (i.e. x86)? |
o) non-IEEE modes (i.e. x86)? |
| 468 |
|
|
| 469 |
Userland emulation: |
Userland emulation: |
| 470 |
|
x) Try to prefix "/emul/mips/" or similar to all filenames, |
| 471 |
|
and only if that fails, try the given filename. |
| 472 |
|
Read this setting from an environment variable, and only |
| 473 |
|
if there is none, fall back to hardcoded string. |
| 474 |
|
x) File descriptor (0,1,2) assumptions? Find and fix these? |
| 475 |
x) Dynamic linking! |
x) Dynamic linking! |
| 476 |
x) Lots of stuff; freebsd, netbsd, linux, ... syscalls. |
x) Lots of stuff; freebsd, netbsd, linux, ... syscalls. |
| 477 |
x) Initial register/stack contents (environment, command line args). |
x) Initial register/stack contents (environment, command line args). |
| 478 |
x) Return value (from main). |
x) Return value (from main). |
| 479 |
x) mmap emulation layer |
x) mmap emulation layer |
| 480 |
x) errno emulation layer |
x) errno emulation layer |
| 481 |
x) struct conversions for may syscalls |
x) struct conversions for many syscalls |
| 482 |
|
|
| 483 |
Sound: |
Sound: |
| 484 |
x) generic sound framework |
x) generic sound framework |
| 550 |
o) Generalize the framebuffer stuff by moving _ALL_ X11 |
o) Generalize the framebuffer stuff by moving _ALL_ X11 |
| 551 |
specific code to src/x11.c! |
specific code to src/x11.c! |
| 552 |
|
|
| 553 |
|
------------------------------------------------------------------------------- |
| 554 |
|
|
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Revision Log
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Patch