linux-toradex.git/arch/cris/arch-v32/lib, branch v2.6.32.40

CRISv32: Add arch optimized strcmp.

2009-06-10T13:21:03+00:00

Add an optimized strcmp for CRISv32. This improves strcmp performance
with about 25% when comparing a 55 character string with itself.

Signed-off-by: Edgar Iglesias 
Acked-by: Jesper Nilsson

[CRIS] Move header files from include to arch/cris/include.

2008-10-29T16:29:44+00:00

Change all users of header files to correct path.
Remove some unneeded headers for arch-v32.

Signed-off-by: Jesper Nilsson

cris: correct usage of __user for copy to and from user space in lib/usercopy and uaccess.h

2008-03-05T00:35:16+00:00

Function __copy_user_zeroing in arch/lib/usercopy.c had the wrong parameter
set as __user, and in include/asm-cris/uaccess.h, it was not set at all for
some of the calling functions.

This will cut the number of warnings quite dramatically when using sparse.

While we're here, remove useless CVS log and correct confusing typo.

Signed-off-by: Jesper Nilsson 
Cc: Mikael Starvik 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

CRIS: Import string.c (memcpy) from newlib: fixes compile error with gcc 4

2008-03-05T00:35:13+00:00

Adrian Bunk reported another compile error with a SVN head GCC:

...
  CC      arch/cris/arch-v10/lib/string.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:139:
error: lvalue required as increment operand
...

This is due to the use of the construct:

	*((long*)dst)++ = lc;

Which isn't legal since casts don't return an lvalue.

The solution is to import the implementation from newlib,
which is continually autotested together with GCC mainline,
and uses the construct:

	*(long *) dst = lc; dst += 4;

Since this is an import of a file from newlib, I'm not touching
the formatting or correcting any checkpatch errors.

As for the earlier fix for memset.c, even if the two files for
CRIS v10 and CRIS v32 are identical at the moment, it might
be possible to tweak the CRIS v32 version.
Thus, I'm not yet folding them into the same file, at least not
until we've done some research on it.

Signed-off-by: Jesper Nilsson 
Cc: Mikael Starvik 
Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cris: import memset.c from newlib: fixes compile error with newer (pre4.3) gcc

2008-02-15T04:58:04+00:00

Adrian Bunk reported the following compile error with a SVN head GCC:

...
CC arch/cris/arch-v10/lib/memset.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c: In function 'memset':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:164: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:165: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:166: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:167: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:185: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:189: error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/memset.c:192: error: lvalue required as increment operand
... etc ...

This is due to the use of the construct:

	*((long*)dst)++ = lc;

Which is no longer legal since casts don't return an lvalue.

The solution is to import the implementation from newlib,
which is continually autotested together with GCC mainline,
and uses the construct:

	*(long *) dst = lc; dst += 4;

With this change, the generated code actually shrinks 76 bytes
since gcc notices that it can use autoincrement for the move
instruction in CRIS.

   text    data     bss     dec     hex filename
    304       0       0     304     130 memset.old.o
   text    data     bss     dec     hex filename
    228       0       0     228      e4 memset.o

Since this is an import of a file from newlib, I'm not touching
the formatting or correcting any checkpatch errors.

Note also that even if the two files for the CRIS v10 and CRIS v32
are identical at the moment, it might be possible to tweak the
CRIS v32 version. Thus, I'm not yet folding them into the same file,
at least not until we've done some research on it.

Signed-off-by: Jesper Nilsson 
Cc: Mikael Starvik 
Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

CRIS v32: Change lib/spinlock.S to use byte operations instead of dwords.

2008-02-08T10:06:36+00:00

CRIS v32: Move hw_settings.S to machine specific directories for ETRAX FS and ARTPEC-3

2008-02-08T10:06:35+00:00

CRIS v32: Update lib/checksum.S and lib/checksumcopy.S

2008-02-08T10:06:35+00:00

- Slight tweaks, use $acr + addoq to propagate carry across the loop boundary.
- Better use of latency cycles.
- Remove duplicate folding of carry, it is not needed.

CRIS v32: Add lib/delay to build.

2008-02-08T10:06:35+00:00

CRIS v32: Add precise delay loops for ETRAX FS and ARTPEC-3.

2008-02-08T10:06:35+00:00

Implements cris_delay10ns.