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Rev Age Author Path Log message Diff
993 6718 d 15 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 6718 d 16 h decky /kernel/trunk/ ppc32: initial stack, memory barriers, atomic operations, stack offset fix  
987 6718 d 19 h decky /kernel/trunk/arch/ppc32/ ppc32: initial exception support  
984 6718 d 20 h palkovsky /kernel/trunk/arch/ Fixed invlpg for ia32 & amd64.  
983 6718 d 20 h palkovsky /kernel/trunk/ Fixed shrinking of as area.  
982 6718 d 20 h decky /kernel/trunk/arch/ppc32/ ppc32: initial I/O support  
980 6718 d 21 h palkovsky /kernel/trunk/ Small speed update of ipc.
Fixed some bugs regarding pages in mremap.		  
979 6718 d 21 h vana /kernel/trunk/arch/ia64/ Itanium FPU context save/restore  
977 6718 d 21 h jermar /kernel/trunk/ Add sys_mremap() syscall.  
972 6719 d 0 h decky /kernel/trunk/arch/ppc32/ ppc32: move kernel one frame up
frame zones initialization		  
970 6719 d 0 h decky /kernel/trunk/arch/ppc32/ ppc32: get memory map from loader  
967 6719 d 1 h palkovsky /kernel/trunk/ Allowed userspace to include page.h.  
962 6719 d 14 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Support for __SYSCALL4.
Fix user stack initial address.		  
959 6719 d 15 h palkovsky /kernel/trunk/ New synchronous ipc.
Widened syscall to support up to 5 parameters.		  
958 6719 d 15 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 6719 d 16 h decky /kernel/trunk/arch/ run ppc32 kernel above 2 GB  
955 6719 d 16 h palkovsky /kernel/trunk/ Added kernel IPC functionality.  
952 6719 d 19 h jermar /kernel/trunk/ Support for loading segments containing .bss section.  
951 6719 d 20 h decky /kernel/trunk/arch/ppc32/ ppc32 boots again (temporarily)  
947 6720 d 1 h vana /kernel/trunk/ Better purge page selection.  
945 6720 d 14 h vana /kernel/trunk/arch/ia64/  
944 6720 d 15 h vana /kernel/trunk/ Itanium tlb_invalidate_pages  
941 6720 d 17 h palkovsky /kernel/trunk/ Fixed mips elf loading.  
940 6720 d 17 h jermar /kernel/trunk/ Get rid of unneeded macros.
Their functionality has been replaced by the ELF loader.		  
938 6720 d 17 h jermar /kernel/trunk/ Basic support for loading ELF object files.
ia64, amd64, ia32 working.
mips32 requires some attention.		  
935 6720 d 18 h vana /kernel/trunk/ Two frame stack (standard stack + RSE) on Itanium  
934 6720 d 18 h decky /kernel/trunk/arch/ppc32/ remove all OpenFirmware bindings from ppc32 kernel code
kernel now runs in real mode (ppc32)		  
928 6720 d 22 h vana /kernel/trunk/ Itanium tlb_invalidate_all  
925 6721 d 2 h palkovsky /kernel/trunk/arch/ia32/src/mm/ Fix e820list on ia32.  
924 6721 d 3 h palkovsky /kernel/trunk/arch/mips32/ Macro redefinition for mips fpu.  
923 6721 d 11 h vana /kernel/trunk/arch/ia64/src/ paging_start counting fix on ia64  
921 6723 d 18 h jermar /kernel/trunk/arch/ia64/ ia64 work.
Userspace is now working.
There is an unrelated show stopper, however.		  
919 6723 d 23 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 6726 d 0 h jermar /kernel/trunk/arch/ia64/src/ ia64 work.
Support switch from userspace register stack in heavyweight handler.		  
915 6726 d 1 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 6727 d 15 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 6727 d 19 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.)		  
910 6727 d 22 h bondari /kernel/trunk/ ELF framework for all archs. SPARC V9 not tested to compile.  
906 6730 d 11 h palkovsky /kernel/trunk/ Added lazy fpu context allocation.
- threads that don't use fpu, don't get allocated fpu context
- fpu context alignment on AMD64 nicely disappeared		  
904 6730 d 16 h jermar /kernel/trunk/arch/ia64/src/mm/ ia64 fix in page.c
== (comparison) was used istead of = (assignment).