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Rev Age Author Path Log message Diff
4647 5459 d 18 h jermar /branches/arm/ Branch out a new arm branch.  
4314 5544 d 17 h jermar /trunk/kernel/arch/sparc64/ Replace all deprecated BA (Bicc) instructions with BA %xcc instructions.  
4276 5551 d 21 h jermar /trunk/kernel/arch/sparc64/src/trap/ Replace the deprecated Bicc instructions with proper Bcc instructions.  
3749 5660 d 12 h jermar /trunk/kernel/arch/sparc64/src/trap/ Support for preemptible syscalls on sparc64.  
3482 5745 d 16 h jermar /trunk/kernel/arch/sparc64/ Do not allocate full page for the uspace window buffer.
Instead, allocate only the bare minimum to fit NWINDOWS - 1
uspace windows and to satisfy alignment requirements.
 
3463 5757 d 22 h jermar /trunk/kernel/arch/sparc64/ Populate all sparc64 trap table slots belonging to trap_instruction_n.  
3458 5758 d 16 h jermar /trunk/kernel/arch/sparc64/src/trap/ Add sparc64 trap table entries so that the maximum syscall number is 0x40.  
2610 6066 d 20 h jermar /trunk/ Support for six syscall arguments for sparc64.
There is a minor stability issue which needs to be fixed (kernel panics upon entering kconsole from the
console task).
 
2071 6369 d 16 h jermar /trunk/ (c) versus (C)  
2058 6396 d 1 h jermar /trunk/kernel/arch/sparc64/src/ Improve comments.  
2055 6397 d 5 h jermar /trunk/kernel/arch/sparc64/src/ sparc64 work:
- No need to lock kernel stack and userspace window buffer into DTLB.
 
1977 6431 d 13 h jermar /trunk/ Fix bad indentation in ofw.c

sparc64 work:
o Fix copyright in main.c
o Move code from unused parts of the trap table.
 
1917 6469 d 17 h jermar /trunk/ sparc64 work:
- hw_map() can now support up to 8M requests
- CPU stacks are now locked in DTLB of the respective processor
- kernel in the boot phase no longer relies on the stack provided by OpenFirmware
- instead of of doing FLUSHW during kernel startup, simply set the
window state registers to the wanted state
- NWINDOW -> NWINDOWS
- Add/fix some comments and copyrights.
 
1916 6470 d 16 h jermar /trunk/kernel/arch/sparc64/src/trap/ Small change of code organization.
No functional difference.
 
1915 6470 d 17 h jermar /trunk/kernel/ A quote from from SPARC V9 specification:

The Y register is deprecated; it is provided only for compatibility with previous versions
of the architecture. It should not be used in new SPARC-V9 software. It is
recommended that all instructions that reference the Y register (i.e., SMUL,
SMULcc, UMUL, UMULcc, MULScc, SDIV, SDIVcc, UDIV, UDIVcc, RDY, and
WRY) be avoided. See the appropriate pages in Appendix A, “Instruction Definitions,”
for suitable substitute instructions.

Still gcc is generating code which uses Y and some of the instructions above.
This change modifies the preemptible_handler() to preserve the Y register
across preemption.
 
1883 6495 d 23 h jermar /trunk/kernel/arch/sparc64/ More sparc64 FPU trap handlers.  
1882 6496 d 0 h jermar /trunk/kernel/ Support for sparc64 FPU context.  
1880 6498 d 15 h jermar /trunk/ Small improvements here and there.  
1876 6500 d 3 h jermar /trunk/kernel/arch/sparc64/src/trap/ Fixes for sparc64's preemptible_handler().
Resynchronize CWP with that of TL=0.
 
1870 6503 d 16 h jermar /trunk/kernel/ Handle more sparc64 traps and improve handling of already handled traps.  

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