This optimized version is primarily targeted at cortex-a15.
Tested on all nexus devices using the system/extras/libc_test strlen test.
Tested alignments from 1 to 32 that are powers of 2.
Tested that strlen does not cross page boundaries at all alignments.
Speed improvements listed below:
cortex-a15
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~250% improvement.
cortex-a9
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~85% improvement.
krait
- Sizes >= 32 bytes, ~95% improvement.
- Sizes >= 1024 bytes, ~160% improvement.
Merge from internal master.
(cherry-picked from 2fc0717977)
Change-Id: I1ceceb4e745fd68e9d946f96d1d42e0cdaff6ccf
We notify debuggerd of problems by installing signal handlers. That's
fine except for when the signal is caused by us running off the end of
a thread's stack and into the guard page.
Bug: 8557703
Change-Id: I1ef65b4bb3bbca7e9a9743056177094921e60ed3
We cleaned up the auto-generated ones a while back to not touch
the stack unnecessarily if they have <= 4 arguments. This patch
cleans up some hand-crafted ones.
Also improve comments in clone.S.
Change-Id: I8850bf98f2b26829385315304472a760e6880ed8
pthread_getattr_np was reporting the values supplied to us, not the values we
actually used, which is kinda the whole point of pthread_getattr_np.
pthread_attr_setguardsize and pthread_attr_setstacksize were reporting EINVAL
for any size that wasn't a multiple of the system page size. This is
unnecessary. We can just round like POSIX suggests and glibc already does.
Also improve the error reporting for pthread_create failures.
Change-Id: I7ebc518628a8a1161ec72e111def911d500bba71
Well, kinda... localtime.c still contains a bunch of Android-specific
hacks, as does strftime.c. But the other files are now exactly the same
as upstream.
This catches up with several years of bug fixes, and fixes most of the
compiler warnings that were in this code. (Just two remain.)
Bug: 1744909
Change-Id: I2ddfecb6fd408c847397c17afb0fff859e27feef
glibc doesn't have these, and they prevent ping from building out of
the box because it assumes it can define them.
Bug: 9671560
Change-Id: I815f2a9c4fd96a0ea2952eb5a71ddf51e0763660
From the release notes:
Changes affecting future time stamps:
Morocco's midsummer transitions this year are July 7 and August 10,
not July 9 and August 8. (Thanks to Andrew Paprocki.)
Israel now falls back on the last Sunday of October.
(Thanks to Ephraim Silverberg.)
Changes affecting past time stamps:
Specify Jerusalem's location more precisely; this changes the pre-1880
times by 2 s.
Changing affecting metadata only:
Fix typos in the entries for country codes BQ and SX.
Change-Id: I87f992e4c406d4f254dc274f206536e9484024a2
Linux and *BSD kernels use opposite values to indicate pass/block
in ICMPv6 filters, and assign a different value to the
ICMP6_FILTER sockopt.
Bug: 9671560
Bug: 9469682
Change-Id: Ic0f1fcd48891add992acf97632f60aebd172c1d7
On NetBSD and glibc, including sys/ioctl.h provides some
terminal ioctl data structures such as struct winsize. For
compatibility, provide these via sys/ioctl.h in bionic as well.
bionic does not have its own definitions for these structures, so
get them from the Linux kernel definitions.
Change-Id: I01345c23c0bebd60b0a80fc33668e7c0ad7356c3
This picks up the source kernel header change
I984154487c38f6fa827bd78234f7fc2e4e1c383f .
Bug: 9469682
Change-Id: I3b57517cc6442ba4d0b8003d7398617e8226233f
This memcpy code uses NEON/VFP to achieve very good performance
on ARMv7-A processors. It is specifically tuned for A15 but should
provide good performance on A9 also. It is equivalent to the code
in cortex-strings rev 116.
This patch is a follow up the existing gerrit change:
I7f6f77995f3ca903ad9c66d14261441667a2a935
This version includes a tweak for performance on misaligned
buffers and splits the header comment into license and
documentation sections.
Change-Id: Ibd2e23c8d8e01357ba0247be1d05192de3ceba69
Signed-off-by: Will Newton <will.newton@linaro.org>
This is needed to compile open-source code that wants to
expand/compress domain names itself, such as ping6.
Bug: 9469682
Change-Id: I339c6538936d05c031bc6fb0a8793aaf1429dea4
Our intptr_t and uintptr_t aren't "long". Add a compilation test so we remember
to fix this to cope with 32- and 64-bit later.
Bug: http://code.google.com/p/android/issues/detail?id=57218
Change-Id: I2f816d339edb4f7d57e4418b818fb4c602093f38
This memcpy code uses NEON/VFP to achieve very good performance
on ARMv7-A processors. It is specifically tuned for A15 but should
provide good performance on A9 also. It is equivalent to the code
in cortex-strings rev 116.
This patch is a follow up the existing gerrit change:
I7f6f77995f3ca903ad9c66d14261441667a2a935
But this version includes a tweak for performance on misaligned
buffers.
Change-Id: I285abac0068f8ae29a1cbf7862ea8590aadaf0a7
Signed-off-by: Will Newton <will.newton@linaro.org>
