headers: Unbreak some ARM syscalls

Restore the outside-kernel exclusion for some syscalls that was
removed by change I959b64280e184655ef8c713aa79f9e23cb1f7df4,
since these syscalls are used elsewhere.

Change-Id: I5b5bf3d78edd137e820d25281a375966b6c009ec
getopt(): fix missing carriage return on bad parameters

This affect all command line tools which show the usage on stdout
after an invalid parameter error (printed on stderr)

Change-Id: I8e2cb3fda241ab989dc42055f15082f8b3ba1397
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
libm: Add a proper sincos() implementation

Add a proper sincos() implementation that unifies the common
calculations for sin and cos instead of running them twice.

This should cause a speedup even in code not using that
(fairly uncommon) function because gcc can optimize separate
sin() and cos() calls into sincos() calls.

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

Change-Id: I644578ab443506c7404d2638d6d4917ff6c96f20
Krait enhancements from caf

msm8960: Improve performance of memmove, bcopy, and memmove_words

Change-Id: I62b3da046889387f835da741110d35ffd3c8f806

Conflicts:
	libc/Android.mk

msm8960: Improve performance of memcpy

Change-Id: I0c8355ae5e92060ad5a0811d33937e6913c8b633

Bionic/libm: fast neon pow() for small x,y

Add a fast neon version of pow() suitable for relatively small
positive x and y (between 0 and 4).  Run the standard
implementation in all other cases.  Gives approximately 60%
performance improvement to AnTuTu FPU score.

Change-Id: I9234d37eaa6a815d1e619375f5b049c4ec88f557

msm7627a: Enable neon optimized memove and pow functions.

Define SPARROW_NEON_OPTIMIZATION flag so that neon optimized
memove and pow functions are used. Also add Corresponding
definitions in make files.

Change-Id: I12089fc7002e3ec294e63632bd84e395fbd24936

Bionic/libm: Prefer branches and VFP ABI

For internal functions set gcc attribute "aapcs-vfp" for ARM
and use -fno-if-conversion to prefer branches over predicated
instructions (improves performance on architectures with good
branch prediction).

Change-Id: I365e9508bd3babb0bb06fc5de127c1ae17445bcc

Bionic/libm: add assembly versions of sin/cos

Add assembly versions of sin/cos with integrated remainder pi/2
calculation.  Directly extracted from binary libm.so compiled with
__ieee754_rem_pio2 calls inlined.

Change-Id: I9a999c01cea92aace9df7be9ad8f90f150040375

Conflicts:
	libm/Android.mk

Bionic/libm: Remove extra vmov from sin/cos

Move integer representations of x bits on the integer side rather
than moving them to and from the FP registers.

Change-Id: I1d0800730d7553a47c462ee2a0cc044ffe62eb20

Bionic/libm: Pow optimizations and bug fixes

Use VFP calling convention for pow_neon handoff function by default.
Fix register usage collision between two different polynomial
coefficients in pow_neon.  Remove conditional execution in pow_neon
and replace with branching.

Change-Id: I254617940b2787297aff2ab97dbf45c11e6a2b08

Bionic/libm: Add precision-correct de-serialize sin/cos

Modify sin/cos to improve performance while retaining either
bit-for-bit agreement with previous algorithm or <1 ulp
deviation from arbitrary precision result.

Change-Id: Icbd6d66fb1c0ceb53f43fed6541e0c89cc6e7a63
linker: restore prelink support

Prelink support is required to load old vendor binary blobs
on many devices properly

This commit partially reverts 4688279db5dcc4004941e7f133c4a1c3617d842c

Change-Id: Ibc835095579c0bbd18aff61f37bd420de353e94d
FORTIFY_SOURCE: remove memcpy overlap checks

These checks haven't been as useful as I hoped, and it's
causing a false positive finding.  Remove the overlap
compile time checks.

Change-Id: I5d45dde10ae4663d728230d41fa904adf20acaea
msm8660: Add neon based pow() function for Scorpion

Add #define to enable neon based pow() function for msm8660.

(cherry picked from commit f795151ff5dc4eb622b2630cb6f42353db4a1b55)

Change-Id: Iab0f30eb0583c30bcfd6940a23f47e98ffe075df
bionic: Optimizations for gettimeofday and clock_gettime.

Use the kernel user helper feature to calculate the results
of gettimeofday and clock_gettime without actually calling
into kernel space. If the user helper patches have not been
applied to the kernel, the regular system calls are used as
a fallback.

Change-Id: I3aebc6ac19ab4743725648a1a279819e624cc5c4