Log of /SheepShaver/src/Unix/sysdeps.h
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1.59 -
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Mon Aug 17 20:44:30 2009 UTC
(3 years, 9 months ago)
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asvitkine
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1.58: +9 -0 lines
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[Charles Srstka]
Attached is a set of patches to port the precise timer that is currently used in the Linux and BeOS builds of SheepShaver to Mac OS X (and any other Mach-based operating systems).
Currently, the Linux build uses the clock_gettime() function to get nanosecond-precision time, and falls back on gettimeofday() if it is not present. Unfortunately, Mac OS X does not currently support clock_gettime(), and gettimeofday() has only microsecond granularity. The Mach kernel, however, has a clock_get_time() function that does very nearly the same thing as clock_gettime(). The patches to BasiliskII cause the timing functions such as timer_current_time() to use clock_get_time() instead of gettimeofday() on Mach-based systems that do not support clock_gettime().
The changes to SheepShaver involve the precise timer. The existing code for Linux uses pthreads and real-time signals to handle the timing. Mac OS X unfortunately does not seem to support real-time signals, so Mach calls are again used to suspend and resume the timer thread in order to attempt to duplicate the Linux and BeOS versions of the timer. The code is somewhat ugly right now, as I decided to leave alone the pre-existing style of the source file, which unfortunately involves #ifdefs scattered throughout the file and some duplication of code. A future patch may want to clean this up to separate out the OS-specific code and put it all together at the top of the file. However, for the time being, this seems to work.
This has not been extensively tested, because I have not been able to get my hands on a good test-case app for the classic Mac OS that would run inside the emulator and try out the timer. However, performance does seem to be better than with the pre-existing code, and nothing seems to have blown up as far as I can tell. I did find a game via a Google search - Cap'n Magneto - that is known to have problems with Basilisk/SheepShaver's legacy 60 Hz timer, and the opening fade-to-color for this game appears to run much more smoothly with the precise timer code in place.
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1.58 -
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Fri Jun 20 00:50:33 2008 UTC
(4 years, 11 months ago)
by
asvitkine
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1.57: +1 -1 lines
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Don't profile by default - as this is no use to non-developers.
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1.57 -
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Tue Jan 1 09:47:39 2008 UTC
(5 years, 4 months ago)
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gbeauche
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1.56: +1 -1 lines
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Happy New Year!
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1.55 -
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Wed Jan 17 07:05:19 2007 UTC
(6 years, 4 months ago)
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gbeauche
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1.54: +1 -1 lines
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Rearrange powerpc_registers struct and nuke fp_result register which is
only needed for JIT (and to be handled differently in the future).
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1.54 -
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Thu Jul 6 00:01:04 2006 UTC
(6 years, 10 months ago)
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gbeauche
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1.53: +1 -1 lines
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Add more micro asm optimisations to x86{,-64} (mulhw, mulhwu, slw, srw, cntlzw
and subf* series). Also now enable the optimzations on x86_64 by default.
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1.52 -
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Tue May 2 19:33:10 2006 UTC
(7 years ago)
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gbeauche
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1.51: +0 -15 lines
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Move likely() definitions to dyngen-exec.h, they are only used in the CPU
core where it's most useful (give a stronger hint to gcc4)
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1.51 -
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Sat Apr 1 21:41:18 2006 UTC
(7 years, 1 month ago)
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gbeauche
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1.50: +15 -0 lines
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Helper macros to annotate likely branch directions. Colateral effect: this
also fixes build with GCC 4.1 (ppc-dyngen-ops.cpp) since the branches are
re-ordered in a way there is now only one exit-point in op_jump_next_A0().
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1.50 -
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Wed Nov 30 07:24:53 2005 UTC
(7 years, 5 months ago)
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gbeauche
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1.49: +0 -2 lines
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Always use the complete non-stubs Ethernet driver (XXX probably do that
only in Emulated PPC mode for performance reasons?)
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1.48 -
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Sun Jul 3 22:02:01 2005 UTC
(7 years, 10 months ago)
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gbeauche
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1.47: +5 -0 lines
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Minor tweaks to support compilation of ether.cpp within MacOS. i.e. mostly
migrate the Ethernet driver to the MacOS side. This is enabled for
DIRECT_ADDRESSING cases. I didn't want to alter much of ether.cpp (as it
would have required to support that mode). Of course, in REAL_ADDRESSING
mode (the default) and for debugging purposes, the old driver is still
available.
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1.47 -
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Sun Jul 3 13:39:06 2005 UTC
(7 years, 10 months ago)
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gbeauche
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1.46: +0 -14 lines
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Remove obsolete and broken Cygwin/X11 hacks. Forbid builds of the Windows
version from within the Unix/ directory.
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1.46 -
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Fri Jul 1 23:15:11 2005 UTC
(7 years, 10 months ago)
by
gbeauche
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1.45: +1 -1 lines
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Hopefully fix the remaining issue in the High Resolution Timing support
code and re-enable it on Linux platforms (they have clock_nanosleep). Why
did I trigger an interrupt inside a held lock? Hmmm, we should probably
add an _ack semaphore like we do e.g. for ethernet.
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1.45 -
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Thu Jun 30 13:29:43 2005 UTC
(7 years, 10 months ago)
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gbeauche
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1.44: +1 -2 lines
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Re-enable spinlocks on {i386,x86_64} since they are now used only for really
small atomic operations (add/sub). This implementation should be enough for
that purpose.
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1.44 -
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Sat Jun 25 11:39:47 2005 UTC
(7 years, 11 months ago)
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gbeauche
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1.43: +8 -7 lines
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Use fast spinlocks only for small enough atomic operations. Otherwise, you
run into some performance problems in e.g. video graphics experience because
of busywaits in the current spin_lock() implementation.
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1.43 -
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Sat Jun 25 11:06:24 2005 UTC
(7 years, 11 months ago)
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gbeauche
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1.42: +1 -1 lines
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We HAVE_PTHREADS even if we use our own pthreads implementation, this also
induces availability of locking primitives. I will merge the !HAVE_PTHREADS
case (a la Basilisk II) for EMULATED_PPC when I get back to home.
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1.42 -
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Wed Jun 22 12:32:32 2005 UTC
(7 years, 11 months ago)
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gbeauche
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1.41: +8 -0 lines
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Extend internal math library from GNU libc to accomodate older systems
with glibc 2.2.X or simply no C99 capable C library. Fix vrfiz instruction
to really truncate on float values.
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1.41 -
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Sun Mar 27 13:41:46 2005 UTC
(8 years, 1 month ago)
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gbeauche
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1.40: +1 -1 lines
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Disable high-res timings as it could still hang. The advantage is that we
now can use special mutexes to debug deadlocks
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1.40 -
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Sat Mar 5 19:07:35 2005 UTC
(8 years, 2 months ago)
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gbeauche
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1.39: +6 -0 lines
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Enable high precision timings on POSIX systems supporting clock_nanosleep().
Since pthread_suspend_np() is not available to Linux (but NetBSD 2.0), thread
suspend is implemented likewise to boehm-gc.
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1.39 -
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Sun Feb 27 21:52:06 2005 UTC
(8 years, 2 months ago)
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gbeauche
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1.38: +1 -0 lines
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Fix native Linux/ppc with recent enough glibc that supports TLS; r2 is used
in that case. Tell me if I broke other arches, e.g. r13 is no longer saved
in Video and Ethernet stubs, though it seems to be OK.
Colateral feature: SheepShaver should now run on Linux/ppc64 with relevant
32-bit runtime. Native Linux/ppc64 support is harder as low mem globals are
32-bit in mind and e.g. the TLS register there is %r13, %r2 is the TOC
(PowerOpen/AIX ABI)
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1.38 -
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Sun Feb 20 18:08:50 2005 UTC
(8 years, 3 months ago)
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gbeauche
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1.37: +1 -1 lines
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Initial support for NetBSD/ppc in native mode (some crashes occur but I
could boot MacOS 9.0.4)
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1.34 -
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Sat Nov 13 14:09:16 2004 UTC
(8 years, 6 months ago)
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gbeauche
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1.33: +14 -9 lines
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Implement Direct Addressing mode similarly to Basilisk II. This is to get
SheepShaver working on OSes that don't support maipping of Low Memory globals
at 0x00000000, e.g. Windows.
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1.32 -
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Wed Jun 2 16:11:49 2004 UTC
(8 years, 11 months ago)
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gbeauche
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1.31: +17 -3 lines
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Disable testandset() locks, use pthread's as SheepShaver occasionnally hangs
with spinlocks. Weird as those are derived from x86 linuxthreads.
Revision
1.29 -
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Wed May 19 21:23:15 2004 UTC
(9 years ago)
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gbeauche
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1.28: +1 -0 lines
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Make NativeOp() handler a sheepshaver_cpu handler, thus getting rid of ugly
GPR macro definition.
Make the JIT engine somewhat reentrant. This brings a massive performance
boost for applications that cause many Execute68k(). e.g. audio in PlayerPRO.
Revision
1.24 -
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Tue Feb 24 23:09:39 2004 UTC
(9 years, 3 months ago)
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gbeauche
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1.23: +6 -0 lines
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Portability fixes: declare Set_pthread_attr() only if HAVE_PTHREADS. Merge
add_{serial,ether}_names() from B2 prefs editor for FreeBSD/IRIX.
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1.19 -
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Wed Dec 31 18:16:55 2003 UTC
(9 years, 4 months ago)
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gbeauche
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1.18: +19 -0 lines
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Add fast X11 display locking routines based on spinlocks, or on pthreads
in the worst case. Optimize out GetScrap() case when we already own the
selection. i.e. make it smoother. Use our own XDisplay{Un,}Lock() routines.
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1.16 -
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Fri Nov 28 22:13:49 2003 UTC
(9 years, 5 months ago)
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gbeauche
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1.15: +2 -0 lines
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Gather stats about compile time. Define KPX_MAX_CPUS to 1 for allowing
allocation of translation cache into .data section on PowerPC.
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1.14 -
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Tue Nov 11 11:32:24 2003 UTC
(9 years, 6 months ago)
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gbeauche
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1.13: +1 -2 lines
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Remove obsolete code related to PPC_NO_FPSCR_UPDATE, PPC_LAZY_PC_UPDATE,
PPC_LAZY_CC_UPDATE, PPC_HAVE_SPLIT_CR defines.
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1.13 -
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Sun Oct 26 14:16:37 2003 UTC
(9 years, 7 months ago)
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gbeauche
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1.12: +1 -1 lines
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Fix ASYNC_IRQ build but locks may still happen. Note that with a predecode
cache, checking for pending interrupts may not be the bottle neck nowadays.
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1.12 -
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Sun Oct 26 13:59:02 2003 UTC
(9 years, 7 months ago)
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gbeauche
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1.11: +2 -1 lines
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Rewrite interrupts handling code so that the emulator can work with a
predecode cache. This implies to run in interpreted mode only while
processing EmulOps or other native (nested) runs.
Note that the FLIGHT_RECORDER with a predecode cache gets slower than
without caching at all.
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1.11 -
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Sun Oct 12 05:44:14 2003 UTC
(9 years, 7 months ago)
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1.10: +1 -0 lines
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- Handle MakeExecutable() replacement
- Disable predecode cache in CVS for now
- Fix flight recorder ordering in predecode cache mode
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1.10 -
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Sat Oct 11 09:57:49 2003 UTC
(9 years, 7 months ago)
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1.9: +1 -2 lines
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- Add support for FLIGHT_RECORDER with predecode cache
- Always enable predecode cache & flight recorder for now
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1.8 -
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Mon Sep 29 22:41:50 2003 UTC
(9 years, 7 months ago)
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gbeauche
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1.7: +1 -1 lines
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Make older & bogus compilers happy. aka. force "static" storage class
for SPIN_LOCK_UNLOCKED constant.
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1.7 -
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Mon Sep 29 15:46:07 2003 UTC
(9 years, 7 months ago)
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1.6: +2 -0 lines
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- Share EmulatorData & KernelData struct definitions
- Introduce new SheepShaver data area for alternate stacks, thunks, etc.
- Experimental asynchronous interrupts handling. This improves performance
by 30% but some (rare) lockups may occur. To be debugged!
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1.4 -
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Thu May 22 22:12:05 2003 UTC
(10 years ago)
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gbeauche
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1.3: +3 -0 lines
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Import VOSF from Basilisk II for faster and more accurate video refresh.
There may be some bugs left though. Rework sigsegv_handler() a little to
accomodate VOSF way of life.
TODO: merge video drivers infrastructure from B2.
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1.3 -
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Sat Jan 4 12:23:39 2003 UTC
(10 years, 4 months ago)
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1.2: +27 -8 lines
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Sync with changes from cxmon and B2. I have yet to find out why my old
disk image (8.1 based) no longer boots completely. :-/
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