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912 6639 d 16 h jermar /kernel/trunk/ ia64 work.

ivt.S:
Detect userspace stack in heavyweight handler and switch to kernel stack.
Remember the old stack pointer.
As for register stack, kernel stack is assumed still.
Fix alignment issues that showed when STACK_ITEMS was odd.
Fix ld8 instruction that did subtraction of 8 instead of addition of 8.

scheduler.c:
Change before_thread_runs_arch() to calculate address of top of the stack
for the interrupt handler.		  
911 6639 d 20 h jermar /kernel/trunk/arch/ia64/ ia64 work.

Change heavyweight interrupt handler to use bank 0 registers instead of AR.KR0 and AR.KR1.
This prevents userspace from the possibility to see what addresses are being used by kernel.

Store kernel stack address in bank 0 r23 instead of AR.KR7. Again, userspace will not be
able to read the address of its kernel stack.

Increase FRAME_SIZE to 64K as this is the first supported page size in which will fit
thread's combined register and memory stack. (RSE can write out as many as 16K.)		  
899 6644 d 19 h jermar /kernel/trunk/arch/ ia64 work.
Add dummy TLB fault handlers.
Improve code reuse in arch/mm/tlb.c.		  
534 6730 d 17 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel again.  
532 6730 d 17 h jermar / Revert renaming of HelenOS/SPARTAN to HelenOS/kernel because of important pending patch.  
501 6742 d 21 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel.  
478 6753 d 19 h jermar /SPARTAN/trunk/ Re-aply mistakenly reverted changes.  
477 6753 d 22 h vana /SPARTAN/trunk/ Atomic inc & dec functions synchronized on all ia32,ia64 and mips platforms. Now there are 3 versions which returns no value, new value and old value och changed variable.  
473 6755 d 14 h jermar /SPARTAN/trunk/arch/ia64/src/ ia64 work.
Comment some offending steps of heavyweight interrupt handler regarding RSE switching.
With this change, ia64 will do well on tests rwlock #4 and thread #1.
Cleanup.		  
472 6755 d 22 h jermar /SPARTAN/trunk/ Changes in build system.
For .S targets, always do -D__ASM__.
Remove unnecessary #define __ASM__ from various *.S files.
At the end of build, generate disassembler dump for kernel.raw.

ia64 work.
Better General Exception handler.		  
470 6756 d 11 h jermar /SPARTAN/trunk/ ia64 work.
Big cleanup of IA-64 interrupt processing.
Merge of interrupt.c and interrupt_handler.c.
Rewrite of ivt.S and interrupt.c.
Higher level interrupt handlers are now passed a vector number and a pointer to stack structure.

ia32 work.
ia32 has ordered writes. Until it deploys weaker memory ordering model, write_barrier() can be empty statement.		  
456 6757 d 1 h jermar /SPARTAN/trunk/arch/ia64/src/ ia64 work.
Add missing srlz_d().
Remove extra stops.
Coding style cleanups.		  
445 6757 d 21 h jermar /SPARTAN/trunk/arch/ia64/ ia64 work.
Fix SP_DELTA alignment.
Cosmetics.		  
444 6757 d 21 h vana /SPARTAN/trunk/arch/ia64/ Context restore in HEAVYWEIGHT handlers  
443 6757 d 23 h jermar /SPARTAN/trunk/arch/ia64/ ia64 work.
Do not break memory stack alignment in heavyweight interrupt handler.
Reserve scratch area for nested procedure calls on memory stack.		  
442 6758 d 0 h vana /SPARTAN/trunk/arch/ia64/src/ sp should not be decremented after last save  
441 6758 d 0 h jermar /SPARTAN/trunk/arch/ia64/src/ r12 (stack pointer) must be descremented prior to storing data into new memory stack frame.  
439 6758 d 20 h jermar /SPARTAN/trunk/arch/ia64/src/ Two small ia64 improvements.  
438 6758 d 21 h jermar /SPARTAN/trunk/arch/ia64/src/ ia64 work.
Heavyweight handler should be complete up to the point where it switches back to interrupted RSE context.		  
435 6759 d 15 h jermar /SPARTAN/trunk/arch/ia64/ ia64 work.
Begin implemention of heavyweight interrupt handler.
Finish implementation of interval timer.
Add some PAL macros.		  

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