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Amiga Format CD 42
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Amiga Format AFCD42 (Issue 126, Aug 1999).iso
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-serious-
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emulation
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ppclibemu
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1999-05-17
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224 lines
ppc.library emulation history
=============================
(kern): changes are relevant for PowerUp kernel emulation only
(lib): changes are relevant for M68k library only
- 0.6d / ppc.library 46.16 (13.05.99)
o MEMF_NOCACHEPPC,MEMF_NOCACHEM68K,MEMF_WRITETHROUGHPPC and
MEMF_WRITETHROUGHM68K are supported for PPCAllocVec(), PPCAllocMem()
and PPCCreatePool() (M68k and PPC). Ok... not really supported, but
emulated by using Chip-RAM. :)
o PPCGetAttrs(M68k) and PPCGetAttr(PPC) return 0x57415250 ('WARP') for
PPCINFOTAG_EMULATION (=0x8001f0ff), which allows a program to distinguish
the emulation library from the original.
o (lib) PPCCreateTask(): Don't allocate new memory for a second PPC task
invocation with the same ELF object. Only PROGBITS sections are reloaded
from disk to ensure data consistency. NOBITS sections are simply cleared.
o (lib) ELF sections are already loaded and relocated on PPCLoadObject().
This guarantees that PPCGetObjectAttrs() works as expected before
PPCCreateTask() was called.
o (lib) PPCRead/Write/Byte/Word/Long() flush the data cache on PPC side.
PPCWriteLongFlush() additionally invalidates the PPC instruction cache.
o (lib) Fix for SAS/C HunkObj-format, which uses the illegal version 0
in e_ident[EI_VERSION].
o (kern) New functions: PPCReadByte,PPCReadWord,PPCReadLong,PPCWriteByte,
PPCWriteWord and PPCWriteLong.
- 0.6c / ppc.library 46.16 (23.04.99)
o (lib) Enforcer hit fixed, when library is opened by a program for the
first time.
- 0.6b / ppc.library 46.15 (18.04.99)
o (lib) Alloc/Free functions call the appropriate PPC-functions now,
by doing a context-switch. This ensures that the memory functions
on the PPC- and on the 68k-side behave exactly the same.
o (lib) Support for pooled memory: PPCAllocPooled(),PPCFreePooled(),
PPCAllocVecPooled(),PPCFreeVecPooled(),PPCCreatePool(),PPCDeletePool().
- 0.6a / ppc.library 46.14 (14.04.99)
o (kern) PPCFindTask() returns PowerUp TaskObject instead WarpOS TaskPPC.
o (kern) PPCSignal() expects PowerUp TaskObject instead WarpOS TaskPPC.
- 0.6 / ppc.library 46.13 (11.04.99)
o This version of the emulation library REQUIRES powerpc.library V15!
o (lib) MPSemaphore protection of library base caused a wrong Lib-OpenCnt,
which had the effect that the 0.5d library could never be expunged.
o (kern) The optional PPC MsgPort was not deleted on task exit.
o (kern) Pooled memory, as introduced by WarpOS V4, is supported. The
dummy functions are replaced by real ones: PPCAllocPooled(),
PPCAllocVecPooled(),PPCCreatePool(), PPCDeletePool(),PPCFreePooled(),
PPCFreeVecPooled().
o (kern) PPCFindName(), PPCFindNameSync().
o (kern) Semaphore functions: PPCAttemptSemaphore, PPCAttemptSemaphoreByName,
PPCAttemptSemaphoreShared, PPCCreateSemaphore, PPCDeleteSemaphore,
PPCObtainSemaphore, PPCObtainSemaphoreByName, PPCObtainSemaphoreShared,
PPCReleaseSemaphore.
o (kern) Cache support: PPCCacheFlush, PPCCacheFlushAll, PPCCacheInvalid.
o (kern) PPCRawDoFmt().
- 0.5d / ppc.library 46.12 (10.04.99)
o The first try of the PowerUp Message System Emulation seems to be working!
Currently all messages and message ports are allocated in Chip-RAM and
the performance is some magnitudes behind the original ppc.library,
but it ran successfully through all tests (e.g. msg2, msg2old, msg3,
msg5 and msg7 by Ralph Schmidt - the other two have bugs).
The code is already prepared to run in Fast-RAM, which I might try
in a future release.
o (kern) PowerUp Message System supported functions:
PPCCreatePort(), PPCDeletePort(), PPCObtainPort(), PPCReleasePort(),
PPCWaitPort(), PPCCreateMessage(), PPCDeleteMessage(), PPCGetMessage(),
PPCGetMessageAttr(), PPCReplyMessage(), PPCSendMessage().
o (lib) PowerUp Message System supported functions:
PPCCreatePort(), PPCDeletePort(), PPCObtainPort(), PPCReleasePort(),
PPCWaitPort(), PPCCreateMessage(), PPCDeleteMessage(), PPCGetMessage(),
PPCGetMessageAttr(), PPCReplyMessage(), PPCSendMessage().
o (lib) PPCCreateTask():
PPCTASKTAG_INPUT/OUTPUT/ERRORHANDLE overrule NP_xxx tags. It was the
other way around before.
New PPCCreateTask() tags: PPCTASKTAG_STACKSIZE, STARTUP_MSG,
STARTUP_MSGDATA, STARTUP_MSGLENGTH, STARTUP_MSGID, MSGPORT.
o (lib) PPCCreateTask() supports asynchronous PPC tasks.
o (lib) PPCDeleteTask() - untested.
o (lib) PPCGetTaskAttrs(). New tags: PPCTASKINFOTAG_TASK, VALUEPTR,
NAME, PRIORITY, STACKSIZE, INPUTHANDLE, OUTPUTHANDLE, ERRORHANDLE,
ELFOBJECT, STARTUP_MSG, STARTUP_MSGDATA, STARTUPMSG_LENGTH,
STARTUP_MSGID, STARTUP_MSGPORT, SIGALLOC, SIGWAIT, SIGRECVD,
WAITFINISHTASK. The hook and PPC-registers are not supported. Most
tags are untested.
o (kern) Startup code for PPC tasks creates a PPCMsgPort on demand (tag
PPCTASKTAG_MSGPORT). Cleanup code replies the startup message (tag
PPCTASKTAG_STARTUP_MSG).
o (kern) PPCGetTaskAttr(). New tags supported: PPCTASKTAG_STARTUP_MSG,
PPCTASKTAG_STARTUP_MSGDATA, PPCTASKTAG_STARTUP_MSGLENGTH,
PPCTASKTAG_STARTUP_MSGID and PPCTASKTAG_MSGPORT.
o (lib) PPCCacheInvalidE() and PPCCacheTrashE(). Fixed some bugs from
the original ppc.library in these functions.
o (lib) When debugging mode for the library is enabled, the names of
still unimplemented 68k-functions will be displayed.
- 0.5c / ppc.library 46.11 (20.03.99)
o Removed PPCAlert(), PPCPutMessage() and PSYSCALL_xxx(), which are
not accessible in the original kernel.
- 0.5b / ppc.library 46.10 (18.02.99)
o There has to be one EXTUSERDATA for every task. Programs using
ixemul.elf still don't work.
o Increased default stack size used by LoadSeg-patch from 16k to 64k.
- 0.5a / ppc.library 46.9 (26.01.99)
o The EXTUSERDATA tag is supported. ixemul.elf based programs have a
chance to work now.
o (kern) PPCGetTaskAttr() got new tags: PPCTASKINFOTAG_NAME,
PPCTASKINFOTAG_PRIORITY, PPCTASKTAG_STACKSIZE, PPCTASKTAG_EXTUSERDATA,
PPCTASKINFOTAG_USEDSTACKSIZE, PPCTASKINFOTAG_INPUTHANDLE,
PPCTASKINFOTAG_OUTPUTHANDLE, PPCTASKINFOTAG_ERRORHANDLE and
PPCTASKINFOTAG_ELFOBJECT.
o (kern) New function PPCSetTaskAttr(). Supported tags: PPCTASKINFOTAG_NAME,
PPCTASKINFOTAG_PRIORITY, PPCTASKTAG_EXTUSERDATA,
PPCTASKINFOTAG_INPUTHANDLE, PPCTASKINFOTAG_OUTPUTHANDLE,
PPCTASKINFOTAG_ERRORHANDLE.
- 0.5 / ppc.library 46.8 (24.01.99)
o Possibility to start ELF objects directly under WarpOS without runelf!
The emulation library installs its own ELF-LoadSeg patch, which works
nearly in the same way as with the original library. Only difference:
The message system is not used. This feature was only for vbcc-
compatibily anyway, and I know for sure that vbcc no longer needs it. :)
o (lib) PPCCacheClearE() is supported, because it's used by the LoadSeg-
patch, for example.
- 0.4c / ppc.library 46.7 (23.01.99)
o (kern) Fixed PPCGetAttr(). It was erroneously implemented as
PPCGetAttrs() in 0.4 and had some bugs anyway. Now PLL is much more
precise than with the original.
o (kern) Task support functions: PPCFindTask(), PPCFinishTask() and
PPCGetTaskAttr(). PPCGetTaskAttr currently only knows about the
PPCTASKTAG_STACKSIZE tag, others will generate a NULL return value.
o Common symbols are no longer ignored. Space in the .bss section will
be assigned for them. This was one of the major reasons for most
crashes under earlier versions! Unlike vbcc and SAS/C, gcc (or egcs?)
uses common symbols (since some time?).
o (kern) PowerUp ELF library support:
PPCOpenLibrary(), PPCCloseLibrary(), PPCGetLibSymbol().
o New method of starting PPC tasks. Still synchronous only, but the
function is already prepared for asynchronous tasks.
o (lib) More tags supported by PPCCreateTask(): PPCTASKTAG_ERROR,
PPCTASKTAG_BREAKSIGNAL,PPCTASKTAG_INPUTHANDLE,PPCTASKTAG_OUTPUTHANDLE,
PPCTASKTAG_ERRRORHANDLE,PPCTASKTAG_NAME,PPCTASKTAG_PRIORITY,
PPCTASKTAG_ARG5-ARG8, NP_Input,NP_Output,NP_Error,NP_CloseInput,
NP_CloseOutput,NP_CloseError.
o (lib) The argument pointer of PPCRunObject() was not recognized!
o (lib) All memory allocations are done with 32-byte alignment now. There
were some dangeours 4-byte aligments left in earlier versions.
- 0.4b / ppc.library 46.6 (05.01.99)
o A separa