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Rev Age Author Path Log message Diff
1004 6675 d 4 h decky /kernel/trunk/ ppc32: basic exception and interrupt handling  
1001 6675 d 4 h decky /kernel/trunk/arch/ppc32/include/ fix semantics  
1000 6675 d 5 h decky /kernel/trunk/arch/ppc32/include/ add atomic_pre/post_inc/dec  
993 6675 d 9 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.		  
990 6675 d 10 h decky /kernel/trunk/ ppc32: initial stack, memory barriers, atomic operations, stack offset fix  
987 6675 d 12 h decky /kernel/trunk/arch/ppc32/ ppc32: initial exception support  
984 6675 d 13 h palkovsky /kernel/trunk/arch/ Fixed invlpg for ia32 & amd64.  
983 6675 d 13 h palkovsky /kernel/trunk/ Fixed shrinking of as area.  
982 6675 d 13 h decky /kernel/trunk/arch/ppc32/ ppc32: initial I/O support  
980 6675 d 14 h palkovsky /kernel/trunk/ Small speed update of ipc.
Fixed some bugs regarding pages in mremap.		  
979 6675 d 14 h vana /kernel/trunk/arch/ia64/ Itanium FPU context save/restore  
977 6675 d 15 h jermar /kernel/trunk/ Add sys_mremap() syscall.  
972 6675 d 17 h decky /kernel/trunk/arch/ppc32/ ppc32: move kernel one frame up
frame zones initialization		  
970 6675 d 18 h decky /kernel/trunk/arch/ppc32/ ppc32: get memory map from loader  
967 6675 d 18 h palkovsky /kernel/trunk/ Allowed userspace to include page.h.  
962 6676 d 7 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Support for __SYSCALL4.
Fix user stack initial address.		  
959 6676 d 8 h palkovsky /kernel/trunk/ New synchronous ipc.
Widened syscall to support up to 5 parameters.		  
958 6676 d 9 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.		  
957 6676 d 9 h decky /kernel/trunk/arch/ run ppc32 kernel above 2 GB  
955 6676 d 9 h palkovsky /kernel/trunk/ Added kernel IPC functionality.  
952 6676 d 13 h jermar /kernel/trunk/ Support for loading segments containing .bss section.  
951 6676 d 13 h decky /kernel/trunk/arch/ppc32/ ppc32 boots again (temporarily)  
947 6676 d 18 h vana /kernel/trunk/ Better purge page selection.  
945 6677 d 7 h vana /kernel/trunk/arch/ia64/  
944 6677 d 8 h vana /kernel/trunk/ Itanium tlb_invalidate_pages  
941 6677 d 10 h palkovsky /kernel/trunk/ Fixed mips elf loading.  
940 6677 d 10 h jermar /kernel/trunk/ Get rid of unneeded macros.
Their functionality has been replaced by the ELF loader.		  
938 6677 d 10 h jermar /kernel/trunk/ Basic support for loading ELF object files.
ia64, amd64, ia32 working.
mips32 requires some attention.		  
935 6677 d 11 h vana /kernel/trunk/ Two frame stack (standard stack + RSE) on Itanium  
934 6677 d 11 h decky /kernel/trunk/arch/ppc32/ remove all OpenFirmware bindings from ppc32 kernel code
kernel now runs in real mode (ppc32)		  
928 6677 d 15 h vana /kernel/trunk/ Itanium tlb_invalidate_all  
925 6677 d 19 h palkovsky /kernel/trunk/arch/ia32/src/mm/ Fix e820list on ia32.  
924 6677 d 20 h palkovsky /kernel/trunk/arch/mips32/ Macro redefinition for mips fpu.  
923 6678 d 4 h vana /kernel/trunk/arch/ia64/src/ paging_start counting fix on ia64  
921 6680 d 11 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Userspace is now working.
There is an unrelated show stopper, however.		  
919 6680 d 16 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 6682 d 18 h jermar /kernel/trunk/arch/ia64/src/ ia64 work.
Support switch from userspace register stack in heavyweight handler.		  
915 6682 d 19 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 6684 d 8 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 6684 d 12 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.)