Commit Graph

12 Commits

Author SHA1 Message Date
Paul Mundt b3d765f5df sh: Fix up fpu emu build.
The addition of the kprobes code pushed down a variable declaration,
clean it up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17 23:12:11 +09:00
Chris Smith d39f545014 sh: Add kprobes support.
Initial support for kprobes/kretprobes for 32-bit SH platforms.

[ General cleanup and some rework for the kretprobe hash lock. -- PFM ]

Signed-off-by: Chris Smith <chris.smith@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08 10:35:05 +09:00
Paul Mundt fa43972fab sh: fixup many sparse errors.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08 10:35:04 +09:00
Yoshinori Sato 6e80f5e8c4 sh2(A) exception handler update
This patch is

By sh2
- Remove duplicate code
- Reduce stack usage
- Cleanup and little optimize

By sh2a
- Add missing handler(256 to 511)
- Use sh2a instructions handler

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Andrew Morton fad0f90134 sh: arch/sh/kernel/traps_32.c needs asm/fpu.h
arch/sh/kernel/traps_32.c: In function `do_reserved_inst':
arch/sh/kernel/traps_32.c:667: error: implicit declaration of function `do_fpu_inst'

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-04-16 02:03:51 +09:00
Magnus Damm e7cc9a7340 sh: trapped io support V2
The idea is that we want to get rid of the in/out/readb/writeb callbacks from
the machvec and replace that with simple inline read and write operations to
memory. Fast and simple for most hardware devices (think pci).

Some devices require special treatment though - like 16-bit only CF devices -
so we need to have some method to hook in callbacks.

This patch makes it possible to add a per-device trap generating filter. This
way we can get maximum performance of sane hardware - which doesn't need this
filter - and crappy hardware works but gets punished by a performance hit.

V2 changes things around a bit and replaces io access callbacks with a
simple minimum_bus_width value. In the future we can add stride as well.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:09 +09:00
Magnus Damm 4b5a9ef527 sh: use opcode_t and enable unaligned code for sh2a
This patch converts the unaligned access handling code to use opcode_t
instead of u16. While at it, enable unaligned access handling for sh2a.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:09 +09:00
Magnus Damm 4252c659a4 sh: add byte support to the sign extension code
This patch adds byte support to the sign extension code. Unaligned access
traps should never be generated on 8-bit io operations, but we will use this
code for trapped io and we do need byte support there.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:09 +09:00
Magnus Damm 86c0179c93 sh: break out unaligned sign extension code
Break out the sign extension code since it's used in multiple places.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:07 +09:00
Paul Mundt 74d99a5e26 sh: SH-2A FPU support.
Signed-off-by: Kieran Bingham <kbingham@mpc-data.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:57 +09:00
Paul Mundt 5a4f7c66be sh: Share bug/debug traps across _32 and _64.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:50 +09:00
Paul Mundt 2f75fbf16b sh: Move in the SH-5 traps.c impl.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:43 +09:00