linux.git/arch/sh/lib, branch v2.6.28 Linux kernel source tree sh: __copy_user function can corrupt the stack in case of exception 2008-11-13T08:40:30+00:00 Stuart MENEFY stuart.menefy@st.com 2008-10-10T18:49:30+00:00 5d52013cbb3d39bde9f5a6023193058eeb112e98 The __copy_user function can corrupt the stack in the case of a non-trivial length of data, and either of the first two move instructions cause an exception. This is because the fixup for these two instructions is mapped to the no_pop case, but these instructions execute after the stack is pushed. This change creates an explicit NO_POP exception mapping macro, and uses it for the two instructions executed in the trivial case where no stack pushes occur. More information at ST Linux bugzilla: https://bugzilla.stlinux.com/show_bug.cgi?id=4824 Signed-off-by: Dylan Reid <dylan_reid@bose.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
The __copy_user function can corrupt the stack in the case of a
non-trivial length of data, and either of the first two move instructions
cause an exception. This is because the fixup for these two instructions
is mapped to the no_pop case, but these instructions execute after the
stack is pushed.

This change creates an explicit NO_POP exception mapping macro, and uses
it for the two instructions executed in the trivial case where no stack
pushes occur.

More information at ST Linux bugzilla:

	https://bugzilla.stlinux.com/show_bug.cgi?id=4824

Signed-off-by: Dylan Reid <dylan_reid@bose.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Fix up the __raw_read/writeX() definitions. 2008-10-01T06:12:27+00:00 Paul Mundt lethal@linux-sh.org 2008-10-01T06:12:27+00:00 64c9627c2628bc3bd3291710b8ee6f8335883f8b These were doing largely bogus things and using the wrong typing for the address. Bring these in line with the ARM definitions. Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
These were doing largely bogus things and using the wrong typing for
the address. Bring these in line with the ARM definitions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: fixup many sparse errors. 2008-09-08T01:35:04+00:00 Paul Mundt lethal@linux-sh.org 2008-09-04T09:53:58+00:00 fa43972fab24a3c050e880a7831f9378c6cebc0b Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
move arch/sh/lib/io.o to obj-y 2008-07-28T09:10:28+00:00 Adrian Bunk bunk@kernel.org 2008-06-17T22:30:53+00:00 e3b08600902e119b34ca03c4aaf99bde4b173dde EXPORT_SYMBOL's in lib-y considered harmful: <-- snip --> ... MODPOST 1837 modules ERROR: "__raw_readsl" [drivers/ssb/ssb.ko] undefined! ERROR: "__raw_writesl" [drivers/ssb/ssb.ko] undefined! ERROR: "__raw_writesl" [drivers/net/smc91x.ko] undefined! ERROR: "__raw_readsl" [drivers/net/smc91x.ko] undefined! ERROR: "__raw_writesl" [drivers/net/3c59x.ko] undefined! ERROR: "__raw_readsl" [drivers/net/3c59x.ko] undefined! ... make[2]: *** [__modpost] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
EXPORT_SYMBOL's in lib-y considered harmful:

<--  snip  -->

...
  MODPOST 1837 modules
ERROR: "__raw_readsl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/3c59x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/3c59x.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Fix up optimized SH-4 memcpy on big endian. 2008-05-16T05:55:07+00:00 Hideo Saito saito@densan.co.jp 2008-05-15T04:28:46+00:00 e08b954c9a140f2062649faec72514eb505f18c3 Signed-off-by: Hideo Saito <saito@densan.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Hideo Saito <saito@densan.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Allow optimized clear/copy page routines to be used on SH-2. 2008-04-18T16:50:02+00:00 Paul Mundt lethal@linux-sh.org 2008-03-21T09:07:04+00:00 5c0cbd74bb56aeb7f3de883ab79c5f501622ccb1 Presently these are restricted to SH-3 and SH-4, so we reorder the ifdefs a bit to let other parts use these also. Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Presently these are restricted to SH-3 and SH-4, so we reorder the
ifdefs a bit to let other parts use these also.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Explicit alignment for PAGE_SIZE in copy/clear_page(). 2008-01-28T04:18:58+00:00 Paul Mundt lethal@linux-sh.org 2007-11-30T07:34:26+00:00 325df7f20467da07901c4f2b006d3457bba0adec Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Build fixes for lib32 clear_page. 2008-01-28T04:18:56+00:00 Paul Mundt lethal@linux-sh.org 2007-11-23T04:55:02+00:00 0dcb957db5eb658d636097a9283dabdbf59de283 Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: clear/copy_page renames in lib and lib64. 2008-01-28T04:18:54+00:00 Paul Mundt lethal@linux-sh.org 2007-11-21T13:46:14+00:00 9895f9429cb489ba271c06767531083ae4c4bcbe Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Move sh32 optimized I/O routines to arch/sh/lib/ 2008-01-28T04:18:41+00:00 Paul Mundt lethal@linux-sh.org 2007-11-09T05:06:24+00:00 62d6b66edc68f906138df7ba01efd41a45981586 Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>