Some PoS internal system can't cope with more than 4 stack frames,
so the fact that our abort(3) implementation takes 4 frames by itself
makes it useless.
Re-reading POSIX, it only says "behaves as if", so the previous
implementation chain wasn't mandatory and we can just go straight to
calling tgkill...
Before:
#00 pc 0000000000069be4 /system/lib64/libc.so (tgkill+8)
#01 pc 0000000000066d50 /system/lib64/libc.so (pthread_kill+64)
#02 pc 0000000000028110 /system/lib64/libc.so (raise+24)
#03 pc 000000000001d4ec /system/lib64/libc.so (abort+52)
After:
#00 pc 0000000000069bc8 /system/lib64/libc.so (tgkill+8)
#01 pc 000000000001d4c8 /system/lib64/libc.so (abort+80)
#02 pc 0000000000001494 /system/xbin/crasher64 (_ZL9do_actionPKc+872)
#03 pc 00000000000010e0 /system/xbin/crasher64 (main+88)
This is less useful on 32-bit ARM because there there's an extra trampoline
from an assembler abort(3) implementation, so you'll still only get one
meaningful stack frame. But every other architecture will now get two!
But wait!
It turns out that the assembler hack isn't needed any more. Here we are
unwinding just fine all the way through the 32-bit ARM crasher:
Before (with direct call to tgkill but still using the assembler):
#00 pc 00049e7c /system/lib/libc.so (tgkill+12)
#01 pc 00019c6f /system/lib/libc.so (__libc_android_abort+50)
#02 pc 000181f8 /system/lib/libc.so (abort+4)
#03 pc 00001025 /system/xbin/crasher (_ZL9do_actionPKc+656)
#04 pc 00017721 /system/lib/libc.so (__libc_init+48)
#05 pc 00000b38 /system/xbin/crasher (_start+96)
After:
#00 pc 00049e6c /system/lib/libc.so (tgkill+12)
#01 pc 00019c5f /system/lib/libc.so (abort+50)
#02 pc 00001025 /system/xbin/crasher (_ZL9do_actionPKc+656)
#03 pc 00017721 /system/lib/libc.so (__libc_init+48)
#04 pc 00000b38 /system/xbin/crasher (_start+96)
(As you can see, the fact that we see __libc_init rather than main was true
with the assembler stub too, so that's not a regression even if it does seem
odd...)
Bug: N/A
Test: ran crasher64
Change-Id: I9dd5b214c495604c8b502c7ec0de3631080d8c29
Disables debuggerd integration unless building for android.
Bug: 31559095
Test: Diff out/soong/build.ninja before/after, only change is moving
linker's libdebuggerd_client static lib to the beginning of the
list.
Test: lunch aosp_arm64-eng; mmma -j bionic
Change-Id: I62e725f7a9b98b7fe31637d0a835fd5846b0aff0
Pretty useless, because the POSIX APIs are useless for actually
internationalization, but it lets us put this to bed for good.
Bug: http://b/18492914
Test: bionic tests
Change-Id: I4dd0aff66c44b5547039be3ffea806c865b9014a
Test: Changed angler target to use cortex-a7 and I compiled.
Test: Booted this version on angler and ran bionic-unit-tests.
Change-Id: Ice7f6ea38a2569582161a8e659d7877918c1a45a
POSIX locale only, as usual.
The GNU YESSTR and NOSTR extensions return the empty string in the C locale,
so I haven't bothered supporting them.
Bug: http://b/1401872
Test: bionic tests
Change-Id: I6846839e4f9f1812344ed5dce0b93f83c0c20eb3
Ic9125cc1bc4c9ba9eb20d030de72e3ce1fb86fa6 disabled relocation packing
in libc.so, but the flag was dropped when we switched to Android.bp
in Ib0ba2d28bff88483b505426ba61606da314e03ab.
Bug: 20645321
Bug: 20655855
Bug: 32750616
Test: builds
Test: inspect out/build-aosp_angler.ninja
Test: run app that crashes with packed libc.so
Change-Id: Ib0630f2e342afa543bb88303fec8f9695ac583e9
Strings like cflags in Android.bp files are parsed by blueprint,
written to build.ninja files, parsed by ninja, and then passed to
/bin/sh -c. This had resulted in a combination of blueprint
(\"), ninja ($$), and shell (\$) escaping being necessary.
Soong has been updated to automatically handle ninja and shell
escaping, remove extra escaping from Android.bp files.
Bug: 31221587
Test: m -j
Change-Id: Ib58a51dee8d22296b69ec21768ba6a49dd60e980
The parsefloat routines -- which let us pass NaNs and infinities on to
strto(f|d|ld) -- come from NetBSD.
Also fix LP64's strtold to return a NaN, and fix all the architectures
to return quiet NaNs.
Also fix wcstof/wcstod/wcstold to use parsefloat so they support hex
floats.
Lots of new tests.
Bug: http://b/31101647
Change-Id: Id7d46ac2d8acb8770b5e8c445e87cfabfde6f111
When arc4random can get entropy (which is true for basically everyone
but init on kernels that don't support getrandom), use it instead of
AT_RANDOM.
Bug: http://b/29622562
Change-Id: I6932803af2c477e65562ff531bd959f199fad1df
Also fix <sys/ipc.h>.
Not useful except to systems/bringup folks for testing. Trivial tests
added, and double-checked under strace to see that things look right.
x86 -- which works differently to everything else -- tested on the host.
Bug: http://b/27952303
Change-Id: I328534e994ae9e90755f545478fba03038c0bb94
exec and realpath both have PATH_MAX buffers (which is a bug in its own
right, since PATH_MAX isn't a real limit). The printf/scanf implementation
has a few large functions, and the DNS implementation is a complete 1970s
C nightmare.
Bug: http://b/30032507
Change-Id: I4b9daa552123c16bbe84f0632b2b32eba17a9dbd
Hiding our legacy cruft seemed like a good idea, but in practice it will only
mean worse interoperability.
Plus we got it wrong, as the recent `putw` example showed.
Change-Id: I167c7168eff133889028089c22a7a0dfb8d6d0cf
This assumes that it's more likely we're unlinking a file than a directory,
though even if that's not true, as long as a failed unlink(2) is cheaper
than a successful lstat(2) -- which seems likely since there's no data to
copy -- we still win.
Change-Id: I0210e9cd3d31b8cf1813c55c810262ef327382ed
We have much better control over visibility now, so we don't need to
pollute the headers with cruft.
Bug: http://b/24767418
Change-Id: I349f4c3bc30102477375ad9f80926e560c7c1d8b
Bug: http://b/28149048
Bug: http://b/29771478
Clang recently switched to using integrated assembler for Mips.
However, it fails to compile some of the hand-coded assembly files in
bionic. Disable integrated-as for the time being.
Change-Id: I2eed4391f6827224da74383387bdd9105de5a857
Spotted these while cleaning up <sys/cdefs.h> --- if we remove __USE_XOPEN2K8,
libchrome decides you "must" have futimes. Adding the missing functions (all
just alternative interfaces to utimensat(2) system call) lets us clean up
without breaking anything.
Change-Id: If44fab08ee3de0e31066d650d128a3c96323529b
We have an explicit link map now, so we don't need a separate copy of libstdc++
that's built with -fvisibility=hidden.
Bug: http://b/29009180
Change-Id: I2d794d62f52621e6ad258ca6d455f9bd3830d829
* Remove --exclude-libs ldflags (e29e99c51)
* Mips strlen check was inverted
* ARM specific libc changes only apply to the shared library
* Reorder libjemalloc and malloc_common to match Make's ordering (for
better binary diffing)
Change-Id: Ib41bd47565b1e8fadd285daa7b337cff1edd0808
