to wake up. This is needed because the active filter applied in user
space may fail to match VJ compressed packets. (The kernel applies its
copy of the filter before it runs VJ compression.)
autoconfiguration. It clears the RPB's per-cpu-slot BIP flag and
sets up the RPB's restore_term and restart vectors, etc. add a
console_restart() function, which causes a panic and system dump,
that is invoked (indirectly) via those vectors.
eventually, the restart HWRPB vector), which calls console_restart. This
is invoked when the console halt switch is used and the user enters 'c'
at the console prompt, and eventually causes a system crash dump to be
generated.
clean and tlb flush code along with write buffer drains that are
dependant on the definition of CPU_SA110.
The memory reserved for the L1 pagetables is now wired into the memory map
during the pmap_init rather than at L1 pagetable allocation time.
The L1 pages tables are zeroed during initialisation and when they are
released rather than when they are allocated.
When searching for a free L1 page table start search at the page table
after the last one allocated rather than always starting from the first one.
Added some extra DIAGNOSTIC checks for invalidate page index numbers.
Removed some old debugging code that escaped the last clean up.
Idented comments in line with code.
The irq delivery code has been rewritten. On entry to the irq vector the
processor is switched to SVC32 mode so all interrupt routines now run
in SVC32 mode rather than IRQ32 mode. This fixes lots of irq re-enabling
problems.
Interrupt latency times are now vastly improved for high priority interrupts.
Cleaned up calling ast() before returning to USR32 mode (don't need to
mess about with trapframe copying.
Cleaned up all the comments and sorted out their indentation.
Rewritten the soft interrupt delivery code.
Added generic ARM7500 support rather than just RC7500 support.
of using it directly, use a local, and set that local to be curproc
if curproc is not NULL else a pointer to process 0's proc struct.
If syncing disks while handling a panic that occurred while 'curproc'
was NULL, the old code would dereference NULL and die.
ktrace context switch checking. If syncing disks while handling a panic
that occurred while 'curproc' was NULL, the old code would dereference
NULL and die. The (slight) reorganization was done so that space (one extra
splhigh()), rather than time (one extra comparison), would be wasted.
Added support for the SA110. This cpu does not need any register fix-ups
following a data abort.
Return valid signal code values on SEGV's. See machine/signal.h for
decoding SEGV signal codes.
required during pagemove() and vmapbuf() and vunmapbuf().
The kernel and undefined mode stack checks are now guarded with
#ifdef STACKCHECKS.
Tidied up comments.
cache needs to be cleans and the instruction and data caches need to
be invalidate along with the instruction and data tlbs when
the TTB is reloaded during a context switch.
if CPU_SA110 is defined. Cache cleaning is different on the SA110 as
the cache is a write back virtual cache and is split for data and instruction.
Also the cache and tlb control instructions use different coprocessor #15
registers.
Removed suspect FPA probing code, instead use the ARM FPE to probe the FPA.
Neatened up the FPE attachment code.
Recognise StrongARM class of cpu.
Updated the fpa instruction bounce handler to expect a 4th argument
when called on an undefined trap to match recent changes made to
undefined handlers.
Add acknowledgement records to the buffer following origin or bounding
box changes.
Removed prototype for strncmp().
Added support for switch mouse reports between absolute and relative
positions.
This, in conjunction with the trap.c changes, solve the crashes when
referencing illegal addresses in the debugger. Thanks Jason for providing
the trigger and solution ;-)
- Re-write panictrap() so that faults generated by the debugger can be
handled by the debugger.
- Add a small bit of extra checking to the MMU_FAULT case, to make it more
robust against pieces of the proc-structure being NULL (Jason Thorpe)
- If p == NULL at the entry of trap(), assign proc0 to it. Fixes a *lot* of
NULL-pointer dereferences. (Gordon Ross)
jtk