Bug: http://b/157914307
This pragma enables
- -frounding-math, i.e. rounding mode set at runtime are honored
- -ffp-exception-behavior=strict, i.e. FPE semantics are preserved.
- Prevents use of FMA instructions.
Test: Build toolchain without revert https://r.android.com/1298100
and run bionic-unit-tests.math_h*
Change-Id: I6249b20c93e0fd4ebbdfbe433da4ad4a65d3747b
Use target.bionic.system_shared_libs when it is used to limit the
default shared libraries (as opposed to remove them completely).
This avoids attempting to add a host dependency on libc when
system_shared_libs is modified to apply to all variants.
Bug: 193559105
Test: m checkbuild
Change-Id: I8d623321ce5145cf2968f83f78b5cb50711290f4
Remove the vestigial llndk_library and replace it with properties
in the llndk clause of the implementation cc_library.
In order to reduce duplication of the arch-specific headers used
by the implementation and LLNDK, rename libc_headers_arch to
libc_llndk_headers and hoist the "include" directory out of it,
since that directory is preproccessed separately for LLNDK
libraries.
Bug: 170784825
Test: m checkbuild
Test: compare out/soong/build.ninja
Change-Id: I75f0ff9129d910640da55eee6a6387467e6e4a9d
Auto-generate NOTICE files for all the directories, and for each one
individually rather than mixing libc and libm together.
Test: N/A
Change-Id: I7e251194a8805c4ca78fcc5675c3321bcd5abf0a
* https://reviews.llvm.org/D90316 changed warning on
FENV_ACCESS pragma from unknown to ignored.
Existing -Wno-unknown-pragmas cannot suppress the new
-Wignored-pragmas.
Bug: 178516148
Test: make with WITH_TIDY=1
Change-Id: I783feef35324ef43946efca844cd944410875bfa
For backwards compatibility (e.g. with old apps), arm32 libc.so and
libm.so export some of the builtins. On 32-bit x86, libc.so also
exports some of the builtins.
The non-exported variant of the builtins will eventually have hidden
symbols but doesn't currently because D93431 hasn't been merged into
our toolchain yet. See:
- https://reviews.llvm.org/D93431
- I44ec79728db92c089e2f39823c35b6f97d24c1ab in toolchain/llvm_android
Bug: http://b/153025717
Test: bionic unit tests
Change-Id: Ic489cb06a07ef61412502fc65a21b0cf630c11ed
Native bridge modules will never compile against stubs, remove
native_bridge_supported: true.
Test: m checkbuild
Change-Id: I0eb93fe1a2c3f6ca34ce4dab17edda8807132ce8
Instead of assuming a module with the .llndk suffix exists, add an
llndk_stubs property to every cc_library module that has a
corresponding llndk_library. Also rename the llndk_library to have
an explicit .llndk suffix.
Bug: 170784825
Test: no changes to build.ninja (excluding comments) or Android-${TARGET_PRODUCT}.mk
Change-Id: Ib5453472a09ebc64818ceb69bcbe1184720ce86a
There are multiple build breakages with bionic when we enable ThinLTO
globally. Opt bionic out of ThinLTO for now.
#global-thinlto-opt-out
Test: TreeHugger
Bug: 169004486
Change-Id: I546a8074f9c3e0ddbd01d3b7cd730e215e3c0c49
* changes:
libc: Add Armv8.3-A PAuth and Armv8.5-A BTI compatibility to *.S
Update crtbegin.c and crt*.S to support Armv8.5-A BTI
libm: Add Armv8.3-A PAuth and Armv8.5-A BTI support to assembly files
libc: Prepare support for Armv8.3-A PAuth and Armv8.5-A BTI in *.S
This change adds both Armv8.3-A Pointer Authentication and Armv8.5-A BTI
support to *.S files.
Tests: Tested on FVP with BTI enabled
Change-Id: I82750afcbc950a91584463fbc979c2c35d41916a
bionic/libm/x86_64/s_log1p.S:809:2: error: changed section type for .note.GNU-stack, expected: 0x1
.section .note.GNU-stack, ""
^
These assembly sources are missing @progbits to set the section flags
correctly. Without it, they end up denoting a different section type. By
adding the @progbits explicitly, we see the same section flags with
readelf.
[ 4] .note.GNU-stack PROGBITS 0000000000000000 000593 000000 00 0 0 1
Bug: http://b/155835175
Test: m for aosp_x86_64
Change-Id: Ifff35d35f5f9ded5938e88677b18805809820e9f
Stubs of version 29 should be provided to those APEX modules targeting
previous SDK release.
Bug: 145796956
Test: m
Change-Id: I9454fbf81377aba25e75a6fdfc77cbb070eaadde
I had hoped that this would then let us remove more of the "introduced
in" annotations, but it looks like that's not really going to happen
until the NDK's minimum supported API is 21.
Also remove a .c file that wasn't referenced anywhere.
Test: treehugger
Change-Id: I8b4a61c082293f8445195a4fa5ee30595d70444e
Even with formatting off, clang still tries to rearrange the include
files or the using statements, so disable that too.
Test: Verified that the include directories are not rearranged.
Change-Id: I991a1b2bfa94a8202c5a486664658d654f1c7811
Use the .clang-format-2 found in system/core instead of this which is
not actually being used.
Also, enable clang-format running by default.
All upstream directories are marked as ignoring formatting so that
their source files are not modified.
Test: NA
Change-Id: Icee6030f373fa5f072df162f97e6f34320e3d89a
We have data that indicates that we no longer need to export the libgcc
unwinder's implementation detail symbols from libc.so, as well as the entire
unwinder interface from libm.so, so stop exporting them.
Bug: 144430859
Change-Id: Iebb591c4a121abe6368d9854ec96819abe70a006
This library was previously being statically linked into both libraries as a
consequence of the relocation to __aeabi_unwind_cpp_prX present in most object
files. However, after LLVM commit 1549b469, we no longer emit these relocations
on Android, so we need to link the library explicitly with --whole-archive. The
intent is to eventually stop linking libgcc into these libraries altogether,
but for now, we need to keep linking them in order to avoid breaking the build.
Change-Id: I275109527b7cbd6c4247b3fe348975d720626273
The bionic libs are now restricted to be in the runtime APEX and the
platform (for bootstrapping). It can still be referenced from other
APEXes but can't be included there.
Bug: 139870423
Test: m
Change-Id: I7f99eef27ccf75844ca5c9a7ea866496841b738f
Cleanup of references to 'coverage' in build files. Part of a larger
cleanup to make fuzzing work again in the Android build tree.
Also fixed a test issue with emulated TLS with the new changes, and
removed libc.so fuzzer support until a linked bug is fixed
(b/132640749).
Bug: 121042685
Test: With all patches in the bug merged: mmma bionic
Change-Id: I592352fe9210ff811a2660a88cbbfe48d70a1e57
Merged-In: I592352fe9210ff811a2660a88cbbfe48d70a1e57
Enable native bridge support for bionic libraries.
Makes it possible to use them in binaries for translated
architectures.
Bug: http://b/77159578
Test: make
Change-Id: Iccd4ad7aecfa5260cc15f09ca975d2e18987278a
The *.mountpoint targets that installs /bionic/lib/lib*.so and
/bionic/bin/linker* are no longer needed.
Now, /system/lib/lib*.so and /system/bin/linker* are simply symlinks to
the corresponding files in the runtime apex. For example,
/system/lib/libc.so -> /apex/com.android.runtime/lib/bionic/libc.so
This is made possible because we now activate APEXes even before the
data partition is mounted. Before the data partition mounting, the
APEXes from the system partition are ativated. After the data partition
is mounted, updated APEXes in the partition (if any) are activated. As a
result, the symlink always points to the valid path regardless of
whether /data is mounted or not.
Bug: 125549215
Test: device boots
Change-Id: Ie7d83686abe00b3c436f9f9db75d4244200a0fc9
After switching libm from libgcc to libcrt.builtins, some of the symbols
are no longer getting included in libm, causing the compiler to complain
about missing symbols from the version script. Explicitly export them in
libc (since libm depends on libc).
Bug: 122993571
Test: m checkbuild
Test: bionic-unit-tests
Change-Id: Ie91765874d20df605f557b1a8c4236619553c549
This change adds following files and symlinks:
Files:
/bionic/lib[64]/lib{c|dl|m}.so
/bionic/bin/linker[64]
Symlinks:
/system/lib[64]/lib{c|dl|m}.so -> /bionic/lib[64]/lib{c|dl|m}.so
/system/bin/linker[64] -> /bionic/bin/linker[64]
/system/bin/linker_asan[64] -> /bionic/bin/linker[64]
The files serve as mount points for either the bootstrap Bionic or the
default Bionic from the runtime APEX. init does the bind-mounting during
booting.
The symlinks are there to not change the ordinary paths to the bionic
files; there are many places that the paths are implied or hard-coded,
e.g., dlopen("/system/lib/libc.so") or DT_INTERP pointing to
/system/bin/linker in the vendor prebuilts.
Bug: 120266448
Test: m blueline, cf_x86, aosp_arm
The aforementioned files and symlinks are found
Change-Id: I97e38c29409ac0610dde285db8df6e94a7930094
Bionic libs are part of the runtime APEX (com.android.runtime). In order
to be able to update the runtime APEX independetly from the platform, we
have to prevent things outside of the APEX from using bionic symbols
that are not guaranteed to be stable. Otherwise, platform could break
when a symbol is removed from the libs via the APEX update.
To achive this goal, this change adds stubs variant to the bionic libs.
With this, things outside of the runtime APEX (i.e. other APEXes and the
platform) are built with the stubs variants that provide only the
symbols that are guaranteed to be stable.
The set of symbols are basically the same as the symbols available to
NDK clients. However, there are a few additional symbols that are not
available for NDK but should be made available for platform components.
They are marked with "# apex" tag. Symbols with that tag are not exposed
to apps (via NDK stubs) or vendors (via LLNDK stubs).
Note that the stubs is a build-time only artifact. It is used just to
break the build when private symbols are used outside of the runtime
APEX. At runtime, the real library in the APEX is used.
Bug: 120266448
Test: m
Test: m bionic-unit-tests
Change-Id: I7b8d75830c81d7d7d54e2fca21a85b3417531b47
These modules have issues running with execute-only memory. Disable it
in them until we can resolve the issues.
Bug: 77958880
Test: No more XOM-related crashes in these binaries
Change-Id: Ie6c957731155566c2bbe7dbb7a91b9583d9aff93
This allows compiler optimize both calls to a single frinti.
Test: Builds, ran unit tests on arm64.
Change-Id: Ie59ac11a419281836a8051ecda26a5c7b72f3dea
