linux.git/arch/sh/kernel/entry.S, branch v2.6.19

sh: interrupt exception handling rework

2006-10-12T03:03:04+00:00

Kill off interrupt_table for all of the CPU subtypes, we now
default in to stepping in to do_IRQ() for _all_ IRQ exceptions
and counting the spurious ones, rather than simply flipping on
the ones we cared about. This and enabling the IRQ by default
automatically has already uncovered a couple of bugs and IRQs
that weren't being caught, as well as some that are being
generated far too often (SCI Tx Data Empty, for example).

The general rationale is to use a marker for interrupt exceptions,
test for it in the handle_exception() path, and skip out to
do_IRQ() if it's found. Everything else follows the same behaviour
of finding the cached EXPEVT value in r2/r2_bank, we just rip out
the INTEVT read from entry.S entirely (except for in the kGDB NMI
case, which is another matter).

Note that while this changes the do_IRQ() semantics regarding r4
handling, they were fundamentally broken anyways (relying entirely
on r2_bank for the cached code). With this, we do the INTEVT read
from do_IRQ() itself (in the CONFIG_CPU_HAS_INTEVT case), or fall
back on r4 for the muxed IRQ number, which should also be closer
to what SH-2 and SH-2A want anyways.

Signed-off-by: Paul Mundt

sh: build fixes for defconfigs.

2006-10-03T04:14:04+00:00

Get all of the defconfigs building again.

Signed-off-by: Paul Mundt

sh: Add support for 4K stacks.

2006-09-27T09:22:14+00:00

This enables support for 4K stacks on SH.

Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.

Signed-off-by: Paul Mundt

sh: pselect6 and ppoll, along with signal trampoline rework.

2006-09-27T08:27:00+00:00

This implements support for ppoll() and pselect6()..

Signed-off-by: Paul Mundt

sh: __NR_restart_syscall support.

2006-09-27T08:22:49+00:00

This implements support for __NR_restart_syscall.

Signed-off-by: Paul Mundt

sh: APM/PM support.

2006-09-27T07:20:22+00:00

This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.

Signed-off-by: Andriy Skulysh 
Signed-off-by: Paul Mundt

sh: Various cosmetic cleanups.

2006-09-27T03:31:01+00:00

We had quite a bit of whitespace damage, clean most of it up..

Signed-off-by: Stuart Menefy 
Signed-off-by: Arthur Othieno 
Signed-off-by: Paul Mundt

sh: Fix kGDB NMI handling.

2006-09-27T02:37:33+00:00

in_nmi shifted down a few labels, so we were inadvertently
clearing the lower byte of do_syscall_trace, badness ensues.

Signed-off-by: Paul Mundt

sh: Move syscall table in to syscall.S.

2006-09-27T02:36:10+00:00

Move the syscall table in to its own file, as per sh64. The entry.S
bits will end up being considerably different in the sh2/sh2a cases,
so this lets us keep things in sync somewhat..

Signed-off-by: Paul Mundt

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk