* rtems.adb, rtems.ads: Refactored rtems_clock_get into 5 methods
which are single purpose and more strongly typed. They are:
rtems_clock_get_tod - Get TOD in Classic API structure
rtems_clock_get_tod_timeval - Get TOD in struct timeval
rtems_clock_get_seconds_since_epoch - Get TOD as seconds since 1988
rtems_clock_get_ticks_since_boot - Get ticks since boot
rtems_clock_get_ticks_per_second - Get ticks per second
Also switch from using 'Unchecked_Access to 'Access.
Added pragma Convention C as required by gcc > 4.3.
Changed style of parenthese on subprogram calls to match GNAT.
* start/start.S, startup/bspstart.c: disable memory-select
errors early (in start.S) to avoid hangs due to speculative
memory access (motload maps absent memory in TLBs).
Remove TLB mappings for which no physical memory is installed
(bspstart). Enable HID1[RFXE] so that 'core_fault_in' errors
result in a machine-check rather than stalling the machine.
Re-enable memory-select errors at this point.
* startup/linkcmds, startup/linkcmds-le, startup/linkcmds-le.coff: Add
wildcard to gcc_except_table section so programs compiled with gcc
4.3.x can link.
* startup/linkcmds, startup/linkcmds.hsc_cm01,
startup/linkcmds.mpc8349eamds: Add wildcard to gcc_except_table
section so programs compiled with gcc 4.3.x can link.
* startup/linkcmds, startup/linkcmds.brs5l, startup/linkcmds.icecube,
startup/linkcmds.pm520: Add wildcard to gcc_except_table section so
programs compiled with gcc 4.3.x can link.
* startup/linkcmds, startup/linkcmds.bootp, startup/linkcmds.prom: Add
wildcard to gcc_except_table section so programs compiled with gcc
4.3.x can link.
* configure.ac, sptests/Makefile.am: Exercise passing as object Id of
SELF.
* sptests/spname01/.cvsignore, sptests/spname01/Makefile.am,
sptests/spname01/ada_spname01.scn, sptests/spname01/spname01.adb,
sptests/spname01/sptest.adb, sptests/spname01/sptest.ads: New files.
* configure.ac, irq/irq.c, startup/bspclean.c, startup/bspstart.c: Add
ALLOW_IRQ_NESTING option. The MPC5200 has a settle time after
acknowledging the IRQs and currently the BSP does not account for
that. After acknowledging an interrupt, it currently gets a second
spurious IRQ a significant percentage of the time. Rename to
BENCHMARK_IRQ_PROCESSING and get it working again. Under one test
load, not nesting interrupts resulted in a 50% reduction in the
number of IRQs and an ~30% reduction in time spent in IRQs.
