PR 1237/rtems
* cpu.c, cpu_asm.S, rtems/score/cpu.h: Add logic to prevent stack creep
when interrupts occur at a sufficient rate that the interrupted
thread never gets to clean its stack. This patch ensures that an
interrupted thread will not nest ISR dispatches on its stack.
* libcsupport/include/rtems/libcsupport.h, libcsupport/src/newlibc.c,
sapi/Makefile.am, sapi/include/confdefs.h, sapi/src/exinit.c,
score/Makefile.am, score/preinstall.am,
score/include/rtems/score/userext.h, score/src/chain.c,
score/src/userext.c: Switch to newlib reentrancy extension being
installed in the initial set instead of using rtems_extension_create.
While implementing this, noticed that user extensions and chain code
had multiple functions in a single file which is not desirable in the
SuperCore and API portions of RTEMS, so split these into multiple
files with one function per file. Also noticed that some of user
extension code was inlined for no particular reason so moved that to
C bodies. Split executive shutdown from initialization since not
every application shuts down. Moved __fini call to executive shutdown
to be more symmetrical with where it is called at startup.
* sapi/src/exshutdown.c, score/src/chainappend.c,
score/src/chainextract.c, score/src/chainget.c,
score/src/chaininsert.c, score/src/userextaddapiset.c,
score/src/userextaddset.c, score/src/userextremoveset.c,
score/src/userextthreadbegin.c, score/src/userextthreadcreate.c,
score/src/userextthreaddelete.c, score/src/userextthreadrestart.c,
score/src/userextthreadstart.c, score/src/userextthreadswitch.c: New
files.
* score/inline/rtems/score/userext.inl: Removed.
* ChangeLog, libcsupport/src/malloc.c,
libcsupport/src/mallocfreespace.c, sapi/include/confdefs.h,
score/Makefile.am, score/preinstall.am: malloc never blocks so the
Region Manager is quite heavy for implementing this. This patch
implements the C Program Heap directly in terms of the new Protected
Heap handler. This handler is a direct use of a SuperCore Heap in
conjunction with the Allocator Mutex used internally by RTEMS. This
saves 3184 bytes on most SPARC test executables.
* score/include/rtems/score/protectedheap.h, score/src/pheapallocate.c,
score/src/pheapallocatealigned.c, score/src/pheapextend.c,
score/src/pheapfree.c, score/src/pheapgetblocksize.c,
score/src/pheapgetfreeinfo.c, score/src/pheapgetinfo.c,
score/src/pheapinit.c, score/src/pheapresizeblock.c,
score/src/pheapwalk.c: New files.
* cpu_asm.c:
Use Context_Control_fp* instead of void* for fp_contexts.
* rtems/score/cpu.h:
Use Context_Control_fp* instead of void* for fp_contexts.
Eliminate evil casts.
* cpu.c:
Use Context_Control_fp* instead of void* for fp_contexts.
* rtems/score/cpu.h:
Use Context_Control_fp* instead of void* for fp_contexts.
Eliminate evil casts.
* posix/Makefile.am, posix/include/rtems/posix/time.h,
posix/src/adjtime.c, posix/src/alarm.c, posix/src/clockgetres.c,
posix/src/condtimedwait.c, posix/src/mqueuetimedreceive.c,
posix/src/mqueuetimedsend.c, posix/src/mutextimedlock.c,
posix/src/nanosleep.c, posix/src/posixtimespecabsolutetimeout.c,
posix/src/pthread.c, posix/src/pthreadcreate.c,
posix/src/pthreadsetschedparam.c, posix/src/ptimer1.c,
posix/src/sched.c, posix/src/semtimedwait.c,
posix/src/sigtimedwait.c, posix/src/ualarm.c,
rtems/src/clocktodtoseconds.c, score/Makefile.am,
score/preinstall.am, score/include/rtems/score/tod.h,
score/inline/rtems/score/tod.inl, score/src/coretod.c,
score/src/coretodget.c, score/src/coretodgetuptime.c,
score/src/coretodset.c, score/src/coretodtickle.c: Provide timespec
manipulation routines in the SuperCore. Use them everywhere possible.
This lead to significant cleanup in the API routines and eliminated
some of the same code from the POSIX API. At this point, the
SuperCore keeps time in POSIX timespec format properly from 1970. You
just cannot set it before 1988 in keeping with RTEMS traditional
behavior.
* score/include/rtems/score/timespec.h, score/src/timespecaddto.c,
score/src/timespecfromticks.c, score/src/timespecisvalid.c,
score/src/timespeclessthan.c, score/src/timespecsubtract.c,
score/src/timespectoticks.c: New files.
* posix/src/posixintervaltotimespec.c,
posix/src/posixtimespecsubtract.c,
posix/src/posixtimespectointerval.c: Removed.
* score/Makefile.am, score/include/rtems/score/tod.h,
score/inline/rtems/score/tod.inl: Make _TOD_Tickle_ticks a real
non-inlined routine. It should only be used once so there is little
advantage to inlining it.
* score/src/coretodtickle.c: New file.
* rtems/Makefile.am, rtems/include/rtems/rtems/clock.h,
score/include/rtems/score/watchdog.h: Add support for a handler to
obtain the number of nanoseconds since the last clock tick. The
primary interface for this is rtems_clock_set_nanoseconds_extension.
Subsequent commits from Joel will redo the TOD support to use this
capability.
* rtems/src/clocksetnsecshandler.c: New file.
* score/src/heapallocatealigned.c, score/src/threadqrequeue.c: Correct
license URL and/or fix mistake in copyright notice. Both of these
mistakes appear to be from code submitted after these changes were
made previously.
PR 1222/cpukit
* score/Makefile.am, score/include/rtems/score/coremutex.h,
score/include/rtems/score/threadq.h,
score/inline/rtems/score/coremutex.inl, score/src/coremsgsubmit.c,
score/src/coremutexsurrender.c, score/src/threadchangepriority.c,
score/src/threadclearstate.c, score/src/threadhandler.c,
score/src/threadinitialize.c, score/src/threadqdequeuefifo.c,
score/src/threadqdequeuepriority.c, score/src/threadqenqueue.c,
score/src/threadqenqueuefifo.c, score/src/threadqenqueuepriority.c,
score/src/threadqextractfifo.c, score/src/threadqextractpriority.c,
score/src/threadsetstate.c: Enhance so that when the prioirity of a
thread that is blocked on a priority based thread queue is changed,
that its placement in the queue is reevaluated based upon the new
priority. This enhancement includes modifications to the SuperCore as
well as new test cases.
* score/src/threadqrequeue.c: New file.
