__strnlen_chk: avoid recursive strlen calls

Don't use FORTIFY_SOURCE on functions which implement
FORTIFY_SOURCE.

Bug: 12216860
Change-Id: I61db1b47ccdd6bdcf41eab3303f4806494016199
Clean up more recursive FORTIFY_SOURCE calls

Don't use FORTIFY_SOURCE on functions which implement
FORTIFY_SOURCE, to avoid infinite recursion problems.

The previous patch only addressed one of the problems.

Bug: 12216860
Change-Id: I6f30ae7cb5b481be9942add18182ea4839d348a6
bionic: Add ARMv7 optimized string handling routines

Add ARMv7 - and especially Cortex-A9 - optimized string handling
routines based on the versions found in the cortex-strings library.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Make use of new memcpy, tweak settings

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The new memcpy() is slightly faster than the cortex-strings version,
and fixes the Galaxy Nexus camera issue.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
bionic: Add Cortex-A15 optimized version of memcpy

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Add the memcpy implementation from cortex-strings -- faster than
the current implementation on both A9 and A15.

To be investigated: Breaks saving pictures from the camera in
Galaxy Nexus builds

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
revert cortex string optimization routines for now

Change-Id: I410bdef93efd51277b494bde0300a01c49e926f7
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Add optimized sincos() function (ported from linaro_android_4.2.2)

Change-Id: I77f84d7ebc2dd7d5aa352b108b05e2651b5605c1
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Declare __page_shift and __page_size with C linkage

__page_shift and __page_size are defined in asm/page.h with
C linkage - their implementation needs to use the same linkage.

The different linkage types cause a compiler error with clang.
Fixing them seems to be a good idea regardless of the compiler.

Change-Id: I35ed66a08989ced1db422eb03e4d154a5d6b5bda
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Fix mismatch between declaration and forward declaration

KernelArgumentBlock is defined as a class in KernelArgumentBlock.h, but
forward declarations refer to it as a struct.

While this is essentially the same, the mismatch causes a compiler
warning in clang (and may cause warnings in future versions of gcc) in
code that is supposed to be compiled with -Werror.

Change-Id: I4ba49d364c44d0a42c276aff3a8098300dbdcdf0
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Fix build after 4.4 merge

Change-Id: I9b5eb314746ebadfced2f4a055a8e1306ca9e4ec
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Don't include memchr.c twice

Change-Id: I663a934dd4c8e7e87e8d018c878b3c4d04b0b914
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Replace Cortex A15 strlen implementation with cortex-strings

Benchmarks on a Nexus 10 have shown this implementation to be 5%-20%
faster (depending on input)

Change-Id: I4331a390c404a77b1e13909d713c4258a3776bca
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Import memchr implementation from cortex-strings for Cortex A15

Benchmarks on a Nexus 10 have shown the cortex-strings implementation
of memchr to be 60%-70% faster (depending on input)

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>

Change-Id: I72b119905234570e54068375e5c3593d0647c67c
Replace memcpy with the cortex-strings implementation

Benchmarks on a Nexus 10 have shown this implementation to be
up to 12% faster.

Change-Id: I212df99357b338221779cfba118ebfff441c9457
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Add .cfi_startproc/.cfi_endproc wrapper to memcpy

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>