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Rev Age Author Path Log message Diff
1053 6672 d 4 h vana /kernel/trunk/ Itanium FPU Lazy context switching... but not so much tested  
1044 6672 d 9 h jermar /kernel/trunk/ Page table locking.  
1039 6672 d 9 h decky /kernel/trunk/arch/ update for the use of more init tasks  
1023 6673 d 3 h vana /kernel/trunk/ Itanium FPU active context switch  
993 6674 d 1 h jermar /kernel/trunk/arch/ia64/ Fix bug in switch to userspace on ia64: ensure start in bank 1.
Fix bug in tlb_invalidate_all() that cause interrupts to be unconditionally enabled.
Optimize context switching by discarding packed attribute of context structures.		  
979 6674 d 7 h vana /kernel/trunk/arch/ia64/ Itanium FPU context save/restore  
962 6675 d 0 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Support for __SYSCALL4.
Fix user stack initial address.		  
958 6675 d 1 h jermar /kernel/trunk/ Nicer ia32 interrupt handlers and structures holding interrupted context data.
Unify the name holding interrupted context data on all architectures to be istate.		  
947 6675 d 11 h vana /kernel/trunk/ Better purge page selection.  
945 6676 d 0 h vana /kernel/trunk/arch/ia64/  
944 6676 d 1 h vana /kernel/trunk/ Itanium tlb_invalidate_pages  
938 6676 d 3 h jermar /kernel/trunk/ Basic support for loading ELF object files.
ia64, amd64, ia32 working.
mips32 requires some attention.		  
935 6676 d 4 h vana /kernel/trunk/ Two frame stack (standard stack + RSE) on Itanium  
928 6676 d 8 h vana /kernel/trunk/ Itanium tlb_invalidate_all  
923 6676 d 21 h vana /kernel/trunk/arch/ia64/src/ paging_start counting fix on ia64  
921 6679 d 4 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Userspace is now working.
There is an unrelated show stopper, however.		  
919 6679 d 9 h jermar /kernel/trunk/ ia64 work.
Changes to make userspace work (kernel part).
Use ski.conf from contrib directory to run Ski.

There is actually no appropriate syscall handler yet.		  
916 6681 d 10 h jermar /kernel/trunk/arch/ia64/src/ ia64 work.
Support switch from userspace register stack in heavyweight handler.		  
915 6681 d 11 h jermar /kernel/trunk/arch/ia64/ ia64 work.
- Another item had to be allocated on stack to remember new value written to ar.bspstore.
Fix heavyweight interruption handler to calculate RSC.loadrs from the new value of ar.bspstore
instead from the old one.
Uncomment instructions switching ar.bspstore.
- Configure kernel with 512M of memory.		  
912 6683 d 1 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.		  

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