HelenOS – /

Rev 1954 – Minor changes. Some coding style fixes and also a type ...

jermar — Thu, 26 Oct 2006 23:36:32 +0200

jermar – 6 file(s) modified
Minor changes. Some coding style fixes and also a type (tee vs. tree).
One AS -> as change.

~ /trunk/kernel/arch/sparc64/include/mm/tsb.h
~ /trunk/kernel/arch/sparc64/include/trap/mmu.h
~ /trunk/kernel/arch/sparc64/src/start.S
~ /trunk/kernel/generic/src/mm/as.c
~ /trunk/kernel/generic/src/mm/backend_anon.c
~ /trunk/uspace/fb/fb.c

Rev 1953 – Finish renaming xen32 to ia32xen.

jermar — Sun, 22 Oct 2006 20:36:36 +0200

jermar – 6 file(s) modified
Finish renaming xen32 to ia32xen.

~ /trunk/kernel/arch/ia32xen/Makefile.inc
+ /trunk/kernel/arch/ia32xen/src/ia32xen.c (copied from /trunk/kernel/arch/ia32xen/src/xen32.c@1952)
x /trunk/kernel/arch/ia32xen/src/xen32.c
x /trunk/kernel/arch/ia32xen/xen32
~ /trunk/kernel/arch/ia32xen/_link.ld.in
~ /trunk/kernel/Makefile

Rev 1952 – Rename xen32 to ia32xen. The name seems to be more ...

jermar — Sun, 22 Oct 2006 20:27:57 +0200

jermar – 44 file(s) modified
Rename xen32 to ia32xen.
The name seems to be more logical as Xen supports more host architectures.

+ /trunk/boot/arch/ia32xen (copied from /trunk/boot/arch/xen32@1949)
~ /trunk/boot/arch/ia32xen/grub/menu.debug.lst
~ /trunk/boot/arch/ia32xen/grub/menu.lst
x /trunk/boot/arch/xen32
~ /trunk/boot/boot.config
~ /trunk/HelenOS.config
+ /trunk/kernel/arch/ia32xen (copied from /trunk/kernel/arch/xen32@1949)
~ /trunk/kernel/arch/ia32xen/include/asm.h
~ /trunk/kernel/arch/ia32xen/include/boot/boot.h
~ /trunk/kernel/arch/ia32xen/include/drivers/xconsole.h
~ /trunk/kernel/arch/ia32xen/include/hypercall.h
~ /trunk/kernel/arch/ia32xen/include/mm/as.h
~ /trunk/kernel/arch/ia32xen/include/mm/asid.h
~ /trunk/kernel/arch/ia32xen/include/mm/frame.h
~ /trunk/kernel/arch/ia32xen/include/mm/memory_init.h
~ /trunk/kernel/arch/ia32xen/include/mm/page.h
~ /trunk/kernel/arch/ia32xen/include/mm/tlb.h
~ /trunk/kernel/arch/ia32xen/include/pm.h
~ /trunk/kernel/arch/ia32xen/include/types.h
~ /trunk/kernel/arch/ia32xen/src/drivers/xconsole.c
~ /trunk/kernel/arch/ia32xen/src/interrupt.c
~ /trunk/kernel/arch/ia32xen/src/mm/as.c
~ /trunk/kernel/arch/ia32xen/src/mm/frame.c
~ /trunk/kernel/arch/ia32xen/src/mm/memory_init.c
~ /trunk/kernel/arch/ia32xen/src/mm/page.c
~ /trunk/kernel/arch/ia32xen/src/mm/tlb.c
~ /trunk/kernel/arch/ia32xen/src/pm.c
~ /trunk/kernel/arch/ia32xen/src/proc/scheduler.c
~ /trunk/kernel/arch/ia32xen/src/proc/task.c
~ /trunk/kernel/arch/ia32xen/src/proc/thread.c
~ /trunk/kernel/arch/ia32xen/src/smp/apic.c
~ /trunk/kernel/arch/ia32xen/src/smp/ipi.c
~ /trunk/kernel/arch/ia32xen/src/smp/mps.c
~ /trunk/kernel/arch/ia32xen/src/smp/smp.c
~ /trunk/kernel/arch/ia32xen/src/userspace.c
~ /trunk/kernel/arch/ia32xen/src/xen32.c
+ /trunk/kernel/arch/ia32xen/xen32 (copied from /trunk/kernel/arch/xen32@1949)
x /trunk/kernel/arch/ia32xen/xen32/include
x /trunk/kernel/arch/ia32xen/xen32/Makefile.inc
x /trunk/kernel/arch/ia32xen/xen32/src
x /trunk/kernel/arch/ia32xen/xen32/_link.ld.in
x /trunk/kernel/arch/xen32
~ /trunk/kernel/kernel.config
~ /trunk/Makefile

Rev 1951 – Fix comma mistakenly removed in last commit.

jermar — Sun, 22 Oct 2006 20:22:47 +0200

jermar – 1 file(s) modified
Fix comma mistakenly removed in last commit.

~ /trunk/kernel/generic/include/mm/slab.h

Rev 1950 – Indentation changes and coding style fixes in slab.c and slab.h.

jermar — Sun, 22 Oct 2006 19:42:49 +0200

jermar – 3 file(s) modified
Indentation changes and coding style fixes in slab.c and slab.h.

~ /trunk/kernel/doc/mm
~ /trunk/kernel/generic/include/mm/slab.h
~ /trunk/kernel/generic/src/mm/slab.c

Rev 1949 – Remove notes about automatically generated context_offset.h and replace it with ...

jermar — Sun, 22 Oct 2006 15:11:32 +0200

jermar – 5 file(s) modified
Remove notes about automatically generated context_offset.h
and replace it with a proper copyright notice.

~ /trunk/kernel/arch/amd64/include/context_offset.h
~ /trunk/kernel/arch/mips32/include/context_offset.h
~ /trunk/kernel/arch/ppc32/include/context_offset.h
~ /trunk/kernel/arch/ppc64/include/context_offset.h
~ /trunk/kernel/arch/sparc64/include/context_offset.h

Rev 1948 – Remove broken, outdated and unused gencontext.c utilities.

jermar — Sun, 22 Oct 2006 12:24:53 +0200

jermar – 14 file(s) modified
Remove broken, outdated and unused gencontext.c utilities.

~ /trunk/kernel/arch/amd64/include/context.h
~ /trunk/kernel/arch/mips32/include/context.h
~ /trunk/kernel/arch/mips32/include/context_offset.h
~ /trunk/kernel/arch/mips32/include/exception.h
~ /trunk/kernel/arch/ppc32/include/context.h
~ /trunk/kernel/arch/ppc32/include/exception.h
~ /trunk/kernel/arch/ppc64/include/context.h
~ /trunk/kernel/arch/ppc64/include/exception.h
~ /trunk/kernel/arch/sparc64/include/context.h
x /trunk/kernel/tools/amd64/gencontext.c
x /trunk/kernel/tools/mips32/gencontext.c
x /trunk/kernel/tools/ppc32/gencontext.c
x /trunk/kernel/tools/ppc64/gencontext.c
x /trunk/kernel/tools/sparc64/gencontext.c

Rev 1947 – add OFW quiesce command

decky — Sat, 21 Oct 2006 21:32:27 +0200

decky – 2 file(s) modified
add OFW quiesce command

~ /trunk/boot/genarch/ofw.c
~ /trunk/boot/genarch/ofw.h

Rev 1946 – sparc64 work. - Improve panic screen on data_access_exception ...

jermar — Fri, 20 Oct 2006 00:58:53 +0200

jermar – 5 file(s) modified
sparc64 work.
- Improve panic screen on data_access_exception
by dumping contents of DSFSR and DSFAR.
- Change the FHC enable interrupt code to only
set the IMAP_V bit.

~ /trunk/kernel/arch/sparc64/include/mm/tlb.h
~ /trunk/kernel/arch/sparc64/src/drivers/fhc.c
~ /trunk/kernel/arch/sparc64/src/drivers/pci.c
~ /trunk/kernel/arch/sparc64/src/mm/tlb.c
~ /trunk/kernel/arch/sparc64/src/trap/exception.c

Rev 1945 – ia64 work. Move keyboard polling to a dedicated kernel thread. ...

jermar — Thu, 19 Oct 2006 20:07:18 +0200

jermar – 4 file(s) modified
ia64 work.
Move keyboard polling to a dedicated kernel thread.
Console initialization and console related sysinfo setup
can be now done in a single function.

~ /trunk/kernel/arch/ia64/include/ski/ski.h
~ /trunk/kernel/arch/ia64/src/drivers/it.c
~ /trunk/kernel/arch/ia64/src/ia64.c
~ /trunk/kernel/arch/ia64/src/ski/ski.c

Rev 1944 – Add mutual exclusion to keyboard grab and release functions on ...

jermar — Thu, 19 Oct 2006 19:33:08 +0200

jermar – 6 file(s) modified
Add mutual exclusion to keyboard grab and release
functions on sparc64, ppc32, mips32 and ia64.

~ /trunk/kernel/arch/ia64/src/ski/ski.c
~ /trunk/kernel/arch/mips32/src/drivers/msim.c
~ /trunk/kernel/arch/ppc32/src/drivers/cuda.c
~ /trunk/kernel/arch/ppc32/src/drivers/pic.c
~ /trunk/kernel/genarch/src/kbd/ns16550.c
~ /trunk/kernel/genarch/src/kbd/z8530.c

Rev 1943 – xen32: fix compilation

decky — Thu, 19 Oct 2006 11:19:51 +0200

decky – 1 file(s) modified
xen32: fix compilation

~ /trunk/kernel/arch/xen32/src/interrupt.c

Rev 1942 – Convert ia64 to the new IRQ and notification scheme.

jermar — Wed, 18 Oct 2006 22:51:15 +0200

jermar – 9 file(s) modified
Convert ia64 to the new IRQ and notification scheme.

~ /trunk/kernel/arch/ia64/include/drivers/it.h
~ /trunk/kernel/arch/ia64/include/interrupt.h
~ /trunk/kernel/arch/ia64/include/ski/ski.h
~ /trunk/kernel/arch/ia64/src/drivers/it.c
~ /trunk/kernel/arch/ia64/src/ia64.c
~ /trunk/kernel/arch/ia64/src/interrupt.c
~ /trunk/kernel/arch/ia64/src/ski/ski.c
~ /trunk/kernel/arch/sparc64/include/interrupt.h
~ /trunk/uspace/kbd/arch/ia64/src/kbd.c

Rev 1941 – cleanup

decky — Wed, 18 Oct 2006 19:15:29 +0200

decky – 3 file(s) modified
cleanup

~ /trunk/kernel/generic/include/ipc/ipc.h
~ /trunk/kernel/generic/include/mm/asid.h
~ /trunk/kernel/generic/include/mm/slab.h

Rev 1940 – amd64: fix compilation, keyboard not checked yet

decky — Wed, 18 Oct 2006 19:03:56 +0200

decky – 2 file(s) modified
amd64: fix compilation, keyboard not checked yet

~ /trunk/kernel/arch/amd64/include/interrupt.h
~ /trunk/kernel/arch/amd64/src/interrupt.c

Rev 1939 – ia32: fix compilation, keyboard not checked yet

decky — Wed, 18 Oct 2006 18:59:28 +0200

decky – 4 file(s) modified
ia32: fix compilation, keyboard not checked yet

~ /trunk/kernel/arch/ia32/include/interrupt.h
~ /trunk/kernel/arch/ia32/src/interrupt.c
~ /trunk/uspace/kbd/arch/ia32/include/kbd.h
~ /trunk/uspace/kbd/arch/ia32/src/kbd.c

Rev 1938 – mips32: update kbd driver

decky — Wed, 18 Oct 2006 12:01:26 +0200

decky – 1 file(s) modified
mips32: update kbd driver

~ /trunk/uspace/kbd/arch/mips32/src/kbd.c

Rev 1937 – remove orphaned functions

decky — Wed, 18 Oct 2006 11:55:18 +0200

decky – 4 file(s) modified
remove orphaned functions

~ /trunk/kernel/arch/amd64/src/interrupt.c
~ /trunk/kernel/arch/ia32/src/interrupt.c
~ /trunk/kernel/arch/ia64/src/interrupt.c
~ /trunk/kernel/arch/xen32/src/interrupt.c

Rev 1936 – mips32: update for new IRQ subsystem

decky — Wed, 18 Oct 2006 11:54:13 +0200

decky – 11 file(s) modified
mips32: update for new IRQ subsystem

~ /trunk/kernel/arch/mips32/include/console.h
~ /trunk/kernel/arch/mips32/include/drivers/msim.h
~ /trunk/kernel/arch/mips32/include/drivers/serial.h
~ /trunk/kernel/arch/mips32/include/interrupt.h
~ /trunk/kernel/arch/mips32/src/console.c
~ /trunk/kernel/arch/mips32/src/drivers/arc.c
~ /trunk/kernel/arch/mips32/src/drivers/msim.c
~ /trunk/kernel/arch/mips32/src/drivers/serial.c
~ /trunk/kernel/arch/mips32/src/exception.c
~ /trunk/kernel/arch/mips32/src/interrupt.c
~ /trunk/kernel/arch/mips32/src/mips32.c

Rev 1935 – add function type

decky — Wed, 18 Oct 2006 11:52:25 +0200

decky – 1 file(s) modified
add function type

~ /trunk/kernel/generic/include/typedefs.h

Rev 1934 – remove grab (not needed)

decky — Wed, 18 Oct 2006 10:48:52 +0200

decky – 1 file(s) modified
remove grab (not needed)

~ /trunk/kernel/arch/ppc32/src/drivers/cuda.c

Rev 1933 – Implement efficient IPC notification cleanup.

jermar — Tue, 17 Oct 2006 23:20:00 +0200

jermar – 5 file(s) modified
Implement efficient IPC notification cleanup.

~ /trunk/kernel/generic/include/ipc/ipc.h
~ /trunk/kernel/generic/include/ipc/irq.h
~ /trunk/kernel/generic/src/ddi/irq.c
~ /trunk/kernel/generic/src/ipc/ipc.c
~ /trunk/kernel/generic/src/ipc/irq.c

Rev 1932 – Do not copy notification config out of the IRQ structure. ...

jermar — Tue, 17 Oct 2006 22:32:35 +0200

jermar – 5 file(s) modified
Do not copy notification config out of the IRQ structure.
Add the notify member, that toggles notifications on and off instead.
This is good for preventing other tasks from registering the notification
while the notification config is stored outside the IRQ structure.
It should also help to implement the cleanup code.

~ /trunk/kernel/arch/ppc32/src/drivers/cuda.c
~ /trunk/kernel/genarch/src/kbd/ns16550.c
~ /trunk/kernel/genarch/src/kbd/z8530.c
~ /trunk/kernel/generic/include/ipc/irq.h
~ /trunk/kernel/generic/src/ipc/irq.c

Rev 1931 – Add support for IPC notifications even for polled ns16550 based ...

jermar — Tue, 17 Oct 2006 21:18:49 +0200

jermar – 4 file(s) modified
Add support for IPC notifications even for polled ns16550 based keyboard.

~ /trunk/kernel/arch/sparc64/src/console.c
~ /trunk/kernel/genarch/src/kbd/ns16550.c
~ /trunk/kernel/genarch/src/kbd/z8530.c
~ /trunk/uspace/kbd/arch/sparc64/src/kbd.c

Rev 1930 – ppc64: make it compile again

decky — Tue, 17 Oct 2006 17:50:37 +0200

decky – 7 file(s) modified
ppc64: make it compile again

+ /trunk/kernel/arch/ppc64/include/drivers
+ /trunk/kernel/arch/ppc64/include/drivers/pic.h
~ /trunk/kernel/arch/ppc64/include/interrupt.h
~ /trunk/kernel/arch/ppc64/Makefile.inc
+ /trunk/kernel/arch/ppc64/src/drivers
+ /trunk/kernel/arch/ppc64/src/drivers/pic.c
~ /trunk/kernel/arch/ppc64/src/interrupt.c

Rev 1929 – ipc_irq_send_msg(NULL, 0, 0, 0) is definitively a bug

decky — Tue, 17 Oct 2006 17:30:21 +0200

decky – 1 file(s) modified
ipc_irq_send_msg(NULL, 0, 0, 0) is definitively a bug

~ /trunk/kernel/generic/src/console/cmd.c

Rev 1928 – ppc32: update for new IRQ subsystem (there is still a ...

decky — Tue, 17 Oct 2006 17:19:16 +0200

decky – 7 file(s) modified
ppc32: update for new IRQ subsystem (there is still a bug left)

~ /trunk/kernel/arch/ppc32/include/drivers/cuda.h
~ /trunk/kernel/arch/ppc32/include/interrupt.h
~ /trunk/kernel/arch/ppc32/src/drivers/cuda.c
~ /trunk/kernel/arch/ppc32/src/drivers/pic.c
~ /trunk/kernel/arch/ppc32/src/interrupt.c
~ /trunk/kernel/arch/ppc32/src/ppc32.c
~ /trunk/uspace/kbd/arch/ppc32/src/kbd.c

Rev 1927 – remove dummy definitions (which tent to lead to mysterious bugs)

decky — Tue, 17 Oct 2006 17:03:09 +0200

decky – 1 file(s) modified
remove dummy definitions (which tent to lead to mysterious bugs)

~ /trunk/kernel/generic/include/interrupt.h

Rev 1926 – cleanup for new IRQ subsystem

decky — Tue, 17 Oct 2006 12:12:09 +0200

decky – 2 file(s) modified
cleanup for new IRQ subsystem

~ /trunk/kernel/arch/ppc32/src/interrupt.c
~ /trunk/kernel/generic/src/ddi/device.c

Rev 1925 – Support for grabbing and releasing z8530 keyboard for sparc64. We ...

jermar — Mon, 16 Oct 2006 23:34:33 +0200

jermar – 1 file(s) modified
Support for grabbing and releasing z8530 keyboard for sparc64.
We might later add some locking.

~ /trunk/kernel/genarch/src/kbd/z8530.c

Rev 1924 – For the sake of clarity, get rid of negative INR ...

jermar — Mon, 16 Oct 2006 23:09:25 +0200

jermar – 2 file(s) modified
For the sake of clarity, get rid of negative INR for virtual interrupts.
This way, the code can hurt performance on systems where the non-negative klog INR overlaps
with a frequently used INR such as system clock on amd64 and ia32.

~ /trunk/kernel/generic/include/ipc/irq.h
~ /trunk/kernel/generic/src/console/klog.c

Rev 1923 – Replace the old IRQ dispatcher and IPC notifier with new ...

jermar — Mon, 16 Oct 2006 22:51:55 +0200

jermar – 18 file(s) modified
Replace the old IRQ dispatcher and IPC notifier with new implementation.
Note that all architectures except for sparc64 are now broken
and don't even compile.

~ /trunk/kernel/arch/sparc64/src/trap/interrupt.c
~ /trunk/kernel/genarch/src/kbd/z8530.c
~ /trunk/kernel/generic/include/ddi/irq.h
~ /trunk/kernel/generic/include/ipc/ipc.h
~ /trunk/kernel/generic/include/ipc/irq.h
~ /trunk/kernel/generic/include/ipc/sysipc.h
~ /trunk/kernel/generic/include/typedefs.h
~ /trunk/kernel/generic/src/console/cmd.c
~ /trunk/kernel/generic/src/console/klog.c
~ /trunk/kernel/generic/src/ddi/irq.c
~ /trunk/kernel/generic/src/ipc/ipc.c
~ /trunk/kernel/generic/src/ipc/irq.c
~ /trunk/kernel/generic/src/ipc/sysipc.c
~ /trunk/uspace/kbd/arch/sparc64/src/kbd.c
~ /trunk/uspace/klog/klog.c
~ /trunk/uspace/libc/generic/async.c
~ /trunk/uspace/libc/generic/ipc.c
~ /trunk/uspace/libc/include/ipc/ipc.h

Rev 1922 – More IRQ stuff. Modify the IRQ hash table functions to ...

jermar — Sun, 15 Oct 2006 14:46:29 +0200

jermar – 3 file(s) modified
More IRQ stuff.
Modify the IRQ hash table functions to support lookup based on inr and devno.
Add method member to irq_t.

~ /trunk/kernel/arch/sparc64/src/trap/interrupt.c
~ /trunk/kernel/generic/include/ddi/irq.h
~ /trunk/kernel/generic/src/ddi/irq.c

Rev 1921 – Changes in ns16550 and z8530 drivers. Add some stuff for ...

jermar — Sat, 14 Oct 2006 21:31:03 +0200

jermar – 10 file(s) modified
Changes in ns16550 and z8530 drivers.
Add some stuff for IRQ notifications to irq_t.

~ /trunk/kernel/arch/sparc64/include/drivers/kbd.h
~ /trunk/kernel/arch/sparc64/include/drivers/ns16550.h
~ /trunk/kernel/arch/sparc64/include/drivers/z8530.h
~ /trunk/kernel/arch/sparc64/src/drivers/kbd.c
~ /trunk/kernel/genarch/include/kbd/ns16550.h
~ /trunk/kernel/genarch/include/kbd/z8530.h
~ /trunk/kernel/genarch/src/kbd/ns16550.c
~ /trunk/kernel/genarch/src/kbd/z8530.c
~ /trunk/kernel/generic/include/ddi/irq.h
~ /trunk/kernel/generic/src/ddi/irq.c

Rev 1920 – Move the new IRQ redirector to ddi/. Add function for ...

jermar — Sat, 14 Oct 2006 13:36:29 +0200

jermar – 15 file(s) modified
Move the new IRQ redirector to ddi/.
Add function for assigning unique device numbers.
Change sparc64/drivers/kbd.c to assign devno to keyboard.

~ /trunk/kernel/arch/sparc64/src/drivers/kbd.c
~ /trunk/kernel/arch/sparc64/src/sparc64.c
~ /trunk/kernel/arch/sparc64/src/trap/interrupt.c
~ /trunk/kernel/genarch/include/kbd/ns16550.h
~ /trunk/kernel/genarch/include/kbd/z8530.h
~ /trunk/kernel/genarch/src/kbd/ns16550.c
~ /trunk/kernel/genarch/src/kbd/z8530.c
+ /trunk/kernel/generic/include/ddi/device.h
+ /trunk/kernel/generic/include/ddi/irq.h (copied from /trunk/kernel/generic/include/irq.h@1919)
x /trunk/kernel/generic/include/irq.h
~ /trunk/kernel/generic/include/typedefs.h
+ /trunk/kernel/generic/src/ddi/device.c
+ /trunk/kernel/generic/src/ddi/irq.c (copied from /trunk/kernel/generic/src/interrupt/irq.c@1919)
x /trunk/kernel/generic/src/interrupt/irq.c
~ /trunk/kernel/Makefile

Rev 1919 – Prototypical implementation of new IRQ redirector in sparc64. The new ...

jermar — Fri, 13 Oct 2006 22:42:54 +0200

jermar – 11 file(s) modified
Prototypical implementation of new IRQ redirector in sparc64.
The new code can support shared IRQs in kernel (and multiple IRQs per device).
Userspace support is yet to be written.
The only architecture that uses this code is actually sparc64 only.

Rev 1918 – Omitted comma.

jermar — Mon, 09 Oct 2006 22:38:45 +0200

jermar – 1 file(s) modified
Omitted comma.

~ /trunk/kernel/arch/sparc64/src/mm/page.c

Rev 1917 – sparc64 work: - hw_map() can now support up to 8M ...

jermar — Mon, 09 Oct 2006 21:29:42 +0200

jermar – 7 file(s) modified
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.

~ /trunk/boot/arch/sparc64/loader/boot.S
~ /trunk/kernel/arch/sparc64/include/arch.h
~ /trunk/kernel/arch/sparc64/src/cpu/cpu.c
~ /trunk/kernel/arch/sparc64/src/mm/page.c
~ /trunk/kernel/arch/sparc64/src/mm/tsb.c
~ /trunk/kernel/arch/sparc64/src/start.S
~ /trunk/kernel/arch/sparc64/src/trap/trap_table.S

Rev 1916 – Small change of code organization. No functional difference.

jermar — Sun, 08 Oct 2006 23:15:14 +0200

jermar – 1 file(s) modified
Small change of code organization.
No functional difference.

~ /trunk/kernel/arch/sparc64/src/trap/trap_table.S

Rev 1915 – A quote from from SPARC V9 specification: The ...

jermar — Sun, 08 Oct 2006 22:09:28 +0200

jermar – 5 file(s) modified
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.

~ /trunk/kernel/arch/sparc64/include/trap/trap_table.h
~ /trunk/kernel/arch/sparc64/src/dummy.s
~ /trunk/kernel/arch/sparc64/src/trap/trap_table.S
~ /trunk/kernel/doc/arch/sparc64
~ /trunk/kernel/generic/src/mm/as.c