In 1.47.0, std::env requires the STD_ENV_ARCH environment variable to be
set to the target architecture [1].
[1] 8e8939b804/library/std/src/env.rs (L866)
Bug: 171280890
Test: cd external/rust; mm
Change-Id: If4ddf4b9bad2a1a7518a358a5fb597170a97c67e
Adds a new SourceProvider type to generate grpcio code from protos.
Since it's so similar to protobuf, it's basically just a different type
of rust_protobuf.
Bug: 171504899
Test: Example module compiles.
Change-Id: I9882f3ac4d4aeaae0191f2b557e9612b5c7a9ac9
The stubs methods are very specific to cc for now, move them out
of LinkableInterface so they are not shared with rust. Instead,
create a cc.Module.library field that contains the libraryInterface
to simplify calling libraryInterface methods on cc modules.
Test: all Soong tests
Test: no change to Soong outputs
Change-Id: I0289d866ce1f7a765631fe3101a62b1b4988ba1c
Add vendor_ramdisk_available and vendor_ramdisk attribute to
various rules. When a vendor_ramdisk variant of a module is
generated, it is installed to $OUT/vendor-ramdisk.
It is similar to a ramdisk image.
Test: m nothing -j
Change-Id: Ib2d16459f3094dbe21c3bdb7c016cb4b2bf62765
If -x c++ is passed through a modules cflags, it will be overridden by a
-x c and -std flag added by the build system if the extension is not
.hpp/.hh and cpp_std is not set. This leads to confusing behavior.
Instead, add a helpful error message to guide developers towards the
correct way to specify when a header is a C++ header and which std
version should be used.
Bug: 171011490
Test: m nothing
Change-Id: I7e7cba504798d47ce1c753ba8699d7475a95095b
The arguments passed to rustfmt have changed from those used in the
previously referenced CL so update the comment to reference a CL using
the new arguments.
Bug: 164111102
Test: None
Change-Id: I962d56ed36422709a1fcd07ca95f1c015daa6339
Rust will be used for a few virtualization related components so allow
it to be used in the directory in which those components will reside.
Test: built a rust binary in the directory
Change-Id: I805d6117201c2144f7ecf21ec38b577c7c21e9c5
Implement stubsVersions on *llndkStubDecorator and *stubDecorator to
handle the special cases in versionSelectorMutator.
Test: m checkbuild
Change-Id: Idc985c52f91450df42c0275b2b2acef3f2ed8868
Export information about static libraries, shared libraries and
exported flags through Providers instead of accessing the module
directly. Much more is left to be converted, but this significantly
simplifies the dependencies on libraries with stubs by making it easy
for a module to masquerade as another by simply exporting the
providers from the other module. Instead of depending on all the
versions of a library and then picking which one to use later, it
can depend only on the implementation variant and then select the
right SharedLibraryInfo from the variant.
Test: m checkbuild
Test: only expected changes to build.ninja
Change-Id: I1fd9eb4d251cf96ed8398d586efc3e0817663c76
Targets[Android][0] is not always the first, preferred target. Add a new
field to config to provide the correct target and begin to use it.
Test: m nothing
Test: build/soong/scripts/build-ndk-prebuilts.sh
Fixes: 156980228
Change-Id: Ib56f52424ebf47f3eee6ac62b9fd9eca2919d63a
This reverts commit 323dc60712.
Reason for revert: Possible cause of test instability
Bug: 170513220
Test: soong tests
Change-Id: Iee168e9fbb4210569e6cffcc23e60d111403abb8
* Upgrade to new protobuf-codegen; use its standard
default output without local change.
* Allow a sourceProvider to have multiple output files.
For a stem.proto file, output stem.rs and mod_stem.rs.
* New protobuf-codegen option gen_mod_rs always generates
output file named "mod.rs". To generate multiple .proto
files into the same output directory, we need to rename
mod.rs to mod_<stem>.rs.
* Instead of using the gen_mod_rs option and renaming mod.rs
to mod_<stem>.rs, we generate the same mod_<stem>.rs
directly with a simple printf command.
Bug: 170256643
Test: atest -c --host --include-subdirs external/crosvm
Change-Id: Ia09e41029099a6de4d35c96dbabd9ba5514c9019
Pulls out all of the per-file rules into their relevant directories
so platform/build/soong:/OWNERS can be included everywhere we need
the list of build system owners.
Test: treehugger
Bug: 170407947
Change-Id: I5a4b2d252bd9b3c280cd9954cf0e65ac21153ede
Move to a builder pattern to increase flexibility when generating the
test configuration. The testRust, testRustCov and testRustError are kept
as main entry points for standard tests. Add documentation.
Test: m nothing
Change-Id: I891bec982ff2d65413f150d2395edf0fb0d68a43
Putting t.Parallel() in each test makes them run in parallel.
Additional t.Parallel() could be added to each subtest, although
that requires making a local copy of the loop variable for
table driven tests.
Test: m checkbuild
Change-Id: I5d9869ead441093f4d7c5757f2447385333a95a4
* changes:
Don't create version variations of sdk modules
Create fewer empty version variants
Don't make SplitPerApiLevel imply UseSdk
Remove vendor crt special case
Fix apex_test.go and add it to Android.bp
Don't create empty version variants for binaries, objects, rust
rlibs or rust dylibs.
Test: no change to build.ninja
Change-Id: I62d4d43da476eafdb258a08b5ada758bb2971a1a
UseSdk was returning true when SplitPerApiLevel returned true,
which was causing the platform variant of SplitPerApiLevel
module to compile against the SDK. Check SplitPerApiLevel
separately in the sdkMutator instead.
Test: m checkbuild
Change-Id: I0ae667d48a3b7b96709a6cad8e8ea9701659fc2a
Adds the "static_executable" property to rust_binary modules which
allows for building fully static executables. This only impacts bionic
targets.
Bug: 169434439
Test: rust_binary module with static_executable true builds, runs on
device.
Change-Id: I83c19fddd070859b7e56d248237cfd73e1768519
Currently, rustfmt requires to be enabled per repository. Add a comment
near the current project allowed_list as a reminder.
Test: None
Bug: 160223496
Change-Id: Iecf8d5b693620541a00d8ddc905549652025eed9
Test: SOONG_GEN_RUST_PROJECT=1 m nothing; Edit
system/security/keystore2/selinux/src/lib.rs;
Check name resolution in IDE.
Bug: 168263887
Change-Id: Icbbf176c4355c3043807ce3fe0c3967c4a1374e2
Move the project and knownCrates arguments to attributes of
projectGeneratorSingleton.
Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Change-Id: I52beadc8b3ba68c275ec940a6be51c2645983a6c
Instead of returning a boolean, return an enum value to improve
readability and provide greater flexibility for future modifications.
Bug: 168729404
Test: Soong tests pass
Change-Id: Iddcdae8c34be09e476404382e43d1ea5935bae65
Adds the prefer_rlib property to allow linking libstd statically for
device rust binaries. This also changes the default behavior of rustlibs
to also prefer rlib linkage. This is because dylibs do not provide
rlib-libstd variants and always link in libstd dynamically. Thus a
binary requesting libstd rlib linkage should not attempt to link against
dylibs that link libstd dynamically.
Bug: 168729404
Test: New Soong test passes.
Change-Id: Idf8dfbbce8fd936f55a3fb323b17a1a7f0ee954e
There is no need to export the linkdirs from the SourceProvider
variant. Remove them to reduce differences in build.ninja from
a later patch that moves the flag exporting into compile(), which
isn't called by the SourceProvider variant.
Test: m checkbuild
Change-Id: I9c4d3a336a07cb9074376303bfa277c05d893b98
rust_bindgen modules can't inherit properties in cc_defaults that would
be useful for generating bindings (such as cflags). This CL moves these
common properties out into a new struct in cc and adds that struct to
cc_default.
Additionally, Cppflags is added to rust_bindgen to make sure that these
get picked up as well from cc_defaults.
Bug: 163598610
Test: rust_bindgen module uses cflags in cc_defaults.
Test: New Soong test passes
Change-Id: I702442a355244dc01954083f98a2eebbcea12e47
Until now, source provider modules duplicated the rule to generate the
source for each variant. Add a inter-variant dependency between the
source and the other variants (e.g. rlib, dylib) to avoid this
duplication. Add documentation on this behaviour.
Bug: 162588681
Test: m
Change-Id: I41c9e2220f8875245415e17374852e540dfd47ec
In the previous mode, building Rust code using certain intrinsics would
fail on arm32 since our runtime is armv7, but our codegen was arm.
Test: cd external/rust; mma
Bug: 169245712
Change-Id: Ie800486b39325486f5ff319e46632df2a6987391
Adds the c_std and cpp_std properties to rust_bindgen, and use the
default values from cc if these are undefined.
This assumes by default that the header extension indicates whether
the header is a C or C++ header file. This default can be overridden
by setting either c_std or cpp_std.
Test: Soong tests pass, "-std=" arg included in bindgen calls
Bug: 163580541
Change-Id: I5b0d3b8eae9a54dd91d8a0aca583d7803a344f27
The current state of linkage is that device targets always link
libstd dynamically except for rust_ffi_static which requires a static
libstd linkage. However this prevents producing rust_ffi_static
modules which depend on other Rust libraries as those dependencies
will link libstd dynamically and cause a collision. We also want our
rust_test modules to statically link in libstd as well.
This adds a linkage mutator for rlibs that creates a variant for each
libstd linkage. Dependent modules can then select the variant that
matches their linkage of libstd.
Also fixes an issue where installation paths were being generated for
rlibs and static libs even though they weren't being installed. This broke
when adding the linkage mutator as Make would complain about multiple
targets producing the same output.
Bug: 168729404
Test: rust_ffi_static module with other rustlib dependency can be built.
Change-Id: I955b484bf5809e8fc5517750c7f8df82d3ca8895
A per-context variable is used to store the list of modules that
contain stubs and their available versions. Stores the list of the
stubs versions on the implementation module, and then use the new
return values from AddVariationDependencies to expand dependencies
on implementation libraries to also depend on the stubs libraries.
Adds a new mutator pass to propagate list of stub versions to llndk
libraries.
Also creates an alias version variation called "latest" to allow
depending on the latest version without having to know what it is.
Test: all Soong tests
Test: no change to build.ninja, Android-${TARGET_PRODUCT}.mk, make_vars-${TARGET_PRODUCT}.mk or late-${TARGET_PRODUCT}.mk
Change-Id: If19659e2e5828c860fd4d679ef79a414b7ea2efc
With If4300583edfb6d75bd4d984b38f73b6a406b4447, linux_bionic supports
arm64 and rust toolchain was configured to support the new target.
However, rust module types still have been disabled for linux_bionic
targets which forces many rust modules to be annotated with
target.linux_bionic_arm64.enabled: true, which will be very cumbersome.
Therefore, stop disabling the rust modules for linux_bionic.
Bug: 159685774
Test: HOST_CROSS_OS=linux_bionic m nothing
Change-Id: I68b97a43e8252fb82da6e87b3481fa237e1f2691
Rust is not passing the sysroot flag to Clang when invoking it as the
linker. This means files from the host may leak in, and host targets
may fail if sysroot files are not available from the host.
This patch prepends the lld flags from cc into rust linkargs. This
pulls in the sysroots flag, and also ensures that we remain in sync
with linkage flags used in cc.
The '-Wl,--no-undefined-version' from cc is overridden to avoid
missing version assignment errors for rust's generated alloc
functions.
Bug: 167690054
Test: cd external/rust; mma
Test: strace -f -e %file <host libstd.dylib.so build command> pulls
from correct sysroots.
Change-Id: Ic40597f546f3b112012155614056afed487c6ca1
LinuxBionic now supports arm64 architecture in addition to the existing
x86_64 arch. This is to make it possible to build host tools like adb,
fastboot, crosvm, etc. for Linux/ARM on regular Linux/x86 machines.
The arm64 target can be selected in various ways in Android.bp files:
- target.host (because this is still considered as a host target)
- target.linux (provided that the module is also enabled for host)
- target.linux_bionic (use the OS name directly)
- target.linux_bionic_arm64 (OS name + arch combo)
- target.linux_arm64 (provided that the module is also for host)
- target.not_windows
- arch.arm64
The toolchain for the new target is almost the same as the toolchain
config for Android/ARM64. One notable difference is that the clang
triple is aarch64-linux instead of aarch64-linux-android, so that
__ANDROID__ is not defined for the new OS type.
Bug: 134795810
Test: HOST_CROSS_OS=linux_bionic HOST_CROSS_ARCH=arm64 m nothing
Change-Id: If4300583edfb6d75bd4d984b38f73b6a406b4447
The LIBCLANG_PATH provided to bindgen should point to the directory
containing libclang, not the file itself.
Bug: 167977778
Test: m profcollectd
Change-Id: Iabd9970a763c192249b401a618a2d6990b02eab0
This adds a new SourceProvider module type to handle protobuf code
generation. See the new test for an example of how to call this.
Bug: 143953733
Test: New soong tests pass.
Test: Replacing genrules in crosvm with rust_protobuf modules.
Change-Id: Ie3117129cde37b8736bc18ee09bf5cde27c01c34
rust_bindgen implicits currently include dependency-exported include
directories. This is incorrect, and causes issues when the include
directory is a generated directory.
Instead, remove the dependency-exported include directories from the
implicits list, and also add dependency-exported headers to the
implicits to handle these correctly.
Bug: 166779501
Test: Rust projects continue to build, test-case no longer failing.
Change-Id: Ia2da25de9e712b7306f19603dc9d14de6bac3fb3
Reuses the cc.Stripper logic. Abstracts Stripper to avoid the spreading
of references to the cc package.
rustc requires unstripped libraries (precisely, with the `.rustc`
section) when building dependent targets. Contrary to cc, the output of
a compiler module will remain unstripped and only an extra build rule
will be added. This rule will be referenced at install time (in
baseCompiler.install or androidmk).
This change drastically reduces the size of the installed libraries:
(unstripped, from out/target/product/crosshatch/system)
$ find . -name \*.dylib.so -print0 | du -c --files0-from=-
149996 total
(stripped, with this change)
$ find . -name \*.dylib.so -print0 | du -c --files0-from=-
42380 total
Bug: 153430439
Test: cd external/rust; mma
Change-Id: I94fd8bbcec97e0610aa325d3db4460be84d01734
The cc toolchain information is required when using cc.Stripper.
Move to a Module method to avoid importing the cc package everywhere.
Test: m nothing
Bug: 153430439
Change-Id: I497dcdff4e767ecb8b8688c73cf88850c302683d
In order to support cc dependencies which do not start with the 'lib'
prefix, we can't pass them through the -l flag. Instead, we can pass
them directly to linker flags.
Bug: 166151658
Test: cd external/rust/; mma
Test: cd external/crosvm/; mma
Test: Test linking to a cc dep that does not begin with 'lib'
Change-Id: I5acbf3d3405e66446f3eae600b35683c4eb3d8a5
In order to rely on `-march`/`-mcpu` compiler flags for feature
detection, we introduce a new arch variant based on armv8.2 with the
addition of dot product features.
Test: test-art-target on Pixel 4.
Change-Id: I4d97db6129e2cd718a2b21008d36ec767739f925
Upstream removed the -Z no-landing-pads option in
https://github.com/rust-lang/rust/pull/70175, which we picked up in
our latest toolchain update.
Fixes: 166317885
Test: Build and TreeHugger
Change-Id: I51c0ef671bf6a334b2b7223da42cab547e4407d3
Device binaries currently are linked statically by default. Instead we
should be linking these dynamic by default. To avoid conflicts when
manually specifying rlib dependencies on modules, we always link libstd
dynamically for all device modules except static libraries.
This removes the "prefer_dynamic" property entirely to avoid confusion.
Bug: 165161105
Test: m profcollectd is built dynamically.
Test: cd external/rust/; mma
Test: cd external/crosvm/; mma
Change-Id: I25ac897040acbcc2d97c791a33e8e01610632272
Move the linting properties to an enum with 4 possible options:
"default", "android", "vendor" or "none". The previous logic for
default, based on the module's location, is kept. It is now possible to
force the upgrade to a certain lint level for some modules (e.g.
external/[...]/android). Update the unit tests and documentation.
Bug: 163400111
Test: m
Change-Id: I8e464b04401158ed2d3c518a9b72f145a9835c99
We don't need the prebuilt versions. The NDK CRT objects are (now)
built from the platform sources and the only difference is that the
NDK CRT objects also include an ELF note that identifies the NDK
version, which isn't helpful for anything built by the platform.
Add a `crt` property to cc_object that allows CRT objects to identify
themselves. CRT objects, unlike other modules, will have a variant
built per-API level they support, rather than just an SDK variant and
a platform variant. This is needed because new CRT objects will rely
on APIs not available in old libcs and old CRT objects will not
support all the features of a modern one.
Test: treehugger
Bug: http://b/159925977
Change-Id: I6595485fa1bfe0ad4945193d344b863f64eec654
We shouldn't use exported link dirs from proc-macros as these may be
libraries for the wrong architecture or OS.
This doesn't cause a problem unless both the proc-macro and the
dependent library share a dependency. If that's the case, in some
circumstances it will cause the depdent library to fail compilation
when using a library with incorrect architecture.
Bug: 163088025
Test: Test case no longer colliding.
Test: cd external/rust/; mma
Change-Id: I46cbd850c3a89d10aa844b5c1b383e1070452d00
If the no_lint attribute is set, we now explicitly disable any warning
or error.
Bug: 162897623
Test: cd external/selinux; mma; check the build log for warnings
Change-Id: I5338bda77ab25ded7cc43cc3afd29419fcbd9808
The AIDL compiler now uses SourceProvider to compiler the generated Rust
code from system/tools/aidl/build/aidl_interface.go using its own
SourceProvider object, which needs access to baseSourceProvider and all
methods of SourceProvider.
Test: mmma system/tools/aidl with 1357705 applied
Change-Id: I226609a7fccca2e7e1bfbad5d69d1821d37e43a1
While rust_bindgen modules may be interpreted as libraries, they do not
have a reference to the generated source until bindgen has been
executed. For now, ignore these modules.
Update the unit tests to cover the rust_bindgen case.
Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Bug: 162881856
Change-Id: I329d0fe3d94b77d395c3684f55ab01544ff7c18f
crate_name do not need to be unique. A library may depend on two
different versions of the same crate. Use the module name instead of the
crate name when indexing the modules for rust-project.json.
Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Bug: 162896400
Change-Id: I8af9115b106fda2bed5b9fe96059cc29a33ac247
Revert submission 1391076
Reason for revert: Broken downstream Darwin build (b/162975597)
Reverted Changes:
I275f04639:rust: handle modules with same crate_name
Ie736d7ebb:rust: validate existence of library source
Change-Id: I1732d50a08546864f17cd826c8af574c1064c670
Revert submission 1391076
Reason for revert: Broken downstream Darwin build (b/162975597)
Reverted Changes:
I275f04639:rust: handle modules with same crate_name
Ie736d7ebb:rust: validate existence of library source
Change-Id: I995923153c11db26b4af985f2eabe94912fb04d3
This removes ambiguity for developers with the 'stem' property.
Bug: 159064919
Test: New Soong test; error is produced if this property is undefined.
Change-Id: I790fbcfa6cd7dbf6df63b5cf5c22983426ec072e
In some cases customized logic is required to generate the expected
bindgen bindings. This adds support for rust_bindgen modules to define a
HostTool module to use instead of bindgen.
Bug: 161816141
Test: New Soong tests pass.
Test: Local test case shows custom_binary module being used for bindgen
generation.
Change-Id: Id52aec4f25c38206d7e585d8e662be7836aa1d4b
crate_name do not need to be unique. A library may depend on two
different versions of the same crate. Use the module name instead of the
crate name when indexing the modules for rust-project.json.
Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Bug: 162896400
Change-Id: I275f04639ef05f2b649c30168046e13b2efcacb9
While rust_bindgen modules may be interpreted as libraries, they do not
have a reference to the generated source until bindgen has been
executed. For now, ignore these modules.
Update the unit tests to cover the rust_bindgen case.
Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Bug: 162881856
Change-Id: Ie736d7ebb115f2c1f9a90be006c972ce24265c6a
bindgen generated code may not pass clippy checks, so preemptively
disable clippy for these.
Bug: 162828070
Test: clippy is not called when compiling rust_bindgen library variants.
Change-Id: I9632c889417bdfd1adf96d9cfbccbe6340824205
Bindgen generated bindings will not pass lints, so we need to disable
them when building bindings crates.
Test: m libbinder_ndk_bindgen
Change-Id: I4536f15f8505ff8d5436f1e6cbc2035e6801276d
Bindgen flags and cflags should be escaped, as they may contain shell
globs or other special characters.
Test: Updated Soong test passes.
Change-Id: I3df8ef25391f53a191f0494c5ff8c641d4d4b6f8
Adds a test_harness field to Rust test blueprint properties. If this
field is explicitly set to false, do not build the test binary with
`--test`. This is necessary for Rust tests which cannot use the standard
test harness.
Test: atest rustBinderTest
Test: atest --host proc-macro2_tests_test
Change-Id: Icbcb54422cc716348feae56b2d71f013516b0ac0
This allows SourceProvider modules to create rust_library variants so
that generated source can be referenced as an external crate rather than
via an include macro. This is done by including rust_bindgen modules
like any other library, as a dependency in either rlibs, dylibs, or
rustlibs.
This renames the stem and flags properties for rust_bindgen modules to
source_stem and bindgen_flags, respectively. This deconflicts with the
usage in baseCompiler.
This also removes 'subName' from the Module struct and moves it over to
SourceProvider, which was the only user. This allows us to set it in
baseSourceProvider's AndroidMk; setting it in Module's AndroidMk was
causing problems finding NOTICE files for bindgen library variants.
Bug: 159064919
Test: New Soong tests pass.
Test: Local test rust_binary can use rust_bindgen module as a crate.
Change-Id: Ieb2cb614c2dd0b5aa7120541d77f6f822a6a1806
rust_library modules no longer produce "link" variants alongside
"rust_libraries" variants as the former have been moved to rust_ffi
modules. rust_library modules however still create empty link variants
and code paths still assume that modules can support both rust linkage
and cc linkage. This adds unnecessary complexity that no longer serves a
purpose.
This cleans this up by removing the unused "link" variant for
rust_library modules and simplifies code paths that can now assume
modules are either a rust library or a cc library, but not both.
This also fixes a bug where Shared() was returning the wrong value.
Bug: 159064919
Test: cd external/rust/; mma
Test: cd external/crosvm/; mma
Change-Id: I3b5498c80b315c56b621dcb1388022fecc1bfc1b
Previously, the prebuilt mutators were added by the
cc.RegisterRequiredBuildComponentsForTest() function as a convenience
but unfortunately it lead to some of the mutators being in a different
order in the tests than in the normal build.
This change:
* Extracts the RegisterPrebuiltMutators() call from
cc.RegisterRequiredBuildComponentsForTest()
* Makes sure that the prebuilt mutators are registered before the
visibility gatherer and enforcer mutators.
Bug: 162505935
Test: m nothing
Change-Id: I7d959b558200b502f0a5e4653c41ea01414e142a
dependencyTag uses a set of predefined tags to identify different types
of dependencies. There are already multiple bits of metadata stored
in the dependency tag (Library, Shared, ReexportFlags), and supporting
them all requires a combinatorial explosion of predefined tags and
causes issues when using equality comparisons if a new bit of metadata
is added.
Add a new libraryDependencyTag type that will contain the metadata
bits, and replace the quality comparisons with checks on the metadata
bits.
There are 5 TODOs where modifying the checks identified problems with
the existing checks. These were left in place to produce identical
build output and will be fixed separately.
Bug: 162437057
Test: no change to build.ninja or {Android,make_vars,late}-${TARGET_PRODUCT}.mk
Change-Id: I72d4207dcf381c07c92e00e5a03968ebb5ed8d30
rust_bindgen was not hermetic previously as it would pull in host
headers for device targets. This fixes that by using the same flags we
use when compiling with Clang. This also makes sure our rust_bindgen
headers are built as similar as possible to their respective
cc_libraries.
This also pulls in the bionic dependencies as well, which provide the
headers required for device targets.
Bug: 162007475
Test: device rust_bindgen deps file does not reference host headers.
Change-Id: I4efdf333e011a6c6d73a0345e5485823f166d17a
This makes debugging easier when the bindings contain errors.
Bug: 161730753
Test: Generated bindings are formatted.
Change-Id: Ic46f69d8b6d07b4dc6912b7f02d7427ea6c11cde
Modules defined in the srcs property are automatically added as
dependencies with AddDependency(), which will use any variant available.
This can cause incorrect architecture bindings to be silently pulled in,
such as when a host module uses a rust_bindgen module that doesn't
create a host variant.
This moves populating depPaths.SrcDeps over to depsToPaths and adds a
check for SourceProviders to make sure the correct OS and architecture
is being used.
Bug: 161826371
Test: Soong no longer silently pulls in bindings for the wrong
target.
Test: New Soong test to catch this case passes.
Change-Id: I2b3651cf6fc7dabf4081434df1c455e637f5b3a4
clippy was not being provided generated sources previously, so it would
error out on being unable to locate the sources.
Test: Clippy no longer errors out on generated sources.
Bug: 161748694
Change-Id: I85907327ca40c82a9520e0c0dbd643bfba6b7315
Allow rust modules to depend on and use generated source code provided
by SourceProvider modules and genrule modules without resorting to
hardcoded output paths.
All generated sources are now copied to a dependent module's
intermediates directory, then OUT_DIR is set to point to that path when
calling rustc. This matches the common convention used in most rust
crates to include generated source code from the path defined in the
OUT_DIR environment variable.
A couple other small notable changes are included in this CL:
* prebuiltLibraries can no longer include generated source files as they
should be prebuilt.
* srcPathFromModuleSrcs now excludes the main source file from the
second return value so its a list of only the generated sources.
Bug: 159064919
Test: Local example rust_library compiles with rust_bindgen dependency.
Test: Local example rust_library compiles with genrule dependency.
Test: Collision detected when multiple providers produce similar output.
Test: New Soong tests pass.
Change-Id: I59f54a25368c680b9086420c47ec24ab8cd1de6b
Add SourceProvider modules which provides a base interface for more
complex code generation usecases such as bindgen. Also adds the
rust_bindgen module type which calls bindgen to generate Rust FFI
bindings to C.
Bug: 159064919
Test: Local test module generates bindings.
Test: New Soong tests pass.
Change-Id: Ie31467bbbe423497666ad837cf5fe1acd1e76bd8
This behavior is non-hermetic, but matches the behavior of the C++
support. On Linux, using lld works, but on OSX, this fails because lld
does not support Apple's new .tbd files.
Bug: 155302034
Test: On both Linux and Mac hosts:
cd external/rust; mma
Change-Id: I0ad489113d720bdb9c3b7a67cce9d1e72266f428
rustc expects Rust dylibs to have a .dylib extension on darwin.
Bug: 155302034
Test: rust_library_host outputs have correct extension on darwin.
Change-Id: I17b0d7eaf0f42f8186185e3f14c3a8e992c74fde
* "srcs" list contains one main Rust source file,
followed by optional dependent modules.
* A dependent module included in the "srcs" list is
the module name prefixed with ":".
* Add a simple test.
Bug: 160331255
Test: make and manual test build dependencies on genrule modules
Change-Id: I4f079138c2599158810b6412fce81b612a3f64a4
With proper prebuilt modules, we can avoid any rustc implicit sysroot
searching.
Asd a bonus, this should make rust-project.json generation correctly
grab otherwise implicit dependencies.
Prebuilt rlibs may include several dependency rlibs. Without a
link_dirs attribute, every dependency (even if unexported) would need a
separate module.
Previously we were casing out on exact structs, which might be OK when
libraryDecorator and procMacroDecorator were the only possibilities, but
repeating the logic for three types is too much. Using an interface
makes this logic scale better.
Bug: 159591910
Test: cd external/rust; mma; m crosvm.experimental
Change-Id: Ia1124e09f48cd05e39f094bbcb988622ebd2272f
This change makes it possible to use a single module to provide both
dylib and rlib varieties of a library. This allows the use of libstd and
libtest from a rustlibs property, allowing linkage type to change
for different variants.
Bug: 159718669
Test: cd external crates; mma; m crosvm.experimental
Change-Id: I477c4d2faec63703fdc6dd42ba020747d6a50714
Adds the rustlibs dependency type which will automatically select
between rlib and dylib based on the type of the library.
Bug: 143217452
Test: cd external/rust; mma
Change-Id: I97faadae98bf957090a32939cfb2d3a10f74a057
rust_library now produces only rlib and dylib variants.
rust_library_foreign now produces static and shared variants.
This change was made because both are common cases, but all four
together essentially never happens. This allows us to have fewer repeat
module definitions.
Bug: 143217452
Test: cd external/rust; mma
Change-Id: Iaf69e8da38f7c12710331c51464699cf7cbbb656
Previously, we had just called AddProperties inside the factory on
libraryDecorator's properties directly. This inadvertantly missed their
MutatedProperties. Inheriting properties from libraryDecorator rather
than baseCompiler will avoid that type of error in the future.
Test: cd external/rust; mma; m crosvm.experimental
Change-Id: Ic08c410e69a8e272d63f9ffbdbe16ba9c3cc3de1
Add documentation on how lints are defined and used in Android. Merge
the deny_warnings attribute with a new attribute (no_lint) which can be
used to disable the default linting parameters.
Explicitly allow all lints for external/ and prebuilts/, which remove
any warning when building sysroot for the devices.
Test: cd external/rust/crates; mma
Test: add dummy internal Rust module; mma
Change-Id: I62be1c41aeda4068fb9e288038727c1de5ffe547
* Add HostToolPath to use rust_binary_host modules as host tools.
Bug: 157666974
Test: make with local genrule examples
Change-Id: I9648313c0f0695d2e695f18ded4710350b2d6475
Depending on the location of the repository (e.g. external/, vendor/), a
different set of lints will be enabled. Add the clippy property to the
rust_* modules. This property can be used to overwrite the default
behaviour.
Test: m checkbuild
Bug: 157238651
Change-Id: Ife0f723ef4a74abb102597f8486a7b9f30e7d351
The testRustContext function is used to prepare the environment for the
unit tests. As such, it is marked as a Helper function. Remove a
second superfluous call within its definition.
Test: m nothing
Change-Id: I37ea9a584b33498794c1cac828a7557d4bea8d7c
This CL adds "dists" to the base property struct to support multiple
dist file configurations, and generic tag support to dist tagged outputs
of modules.
Fixes: b/152834186
Test: soong tests and `m sdk dist`
Change-Id: I80c86bc9b7b09e671f640a4480c45d438bdd9a2a
Signed-off-by: Jingwen Chen <jingwen@google.com>
The moduleContextImpl structure contains duplicate information on the
contexts. BaseModuleContext, ModuleContext and DepsContext can already
surface which Module is being processed via Module(). Because most of
the Rust-specific methods on the *Context structures simply forward to
the Module methods, expose a RustModule() method.
Test: cd external/rust/crates; mma
Change-Id: Ifee90825d54081fc5e9a8df0b7c4580412e9158c
Make uses NATIVE_COVERAGE to enable gcov coverage and CLANG_COVERAGE
to enable clang coverage. NATIVE_COVERAGE is translated to the Soong
Native_coverage product variable which triggers the native_coverage
clause in Android.bp files. The clause also needs to be triggered
for CLANG_COVERAGE.
Rename the existing Native_coverage product variable to GcovCoverage,
and regenerate Native_coverage when either GcovCoverage or
ClangCoverage are set.
Also remove NativeLineCoverage, it wasn't doing anything differently
than Native_coverage.
Bug: 159059537
Test: m checkbuild
Change-Id: I215124a9b35a2ad50ad562079d392e3d33da11f4
Bug: 144861059
Test: cd external/rust/crates; mma
Test: Manual verification through ldd that libstd is a dependency
Change-Id: I603cf519215317aa8c400cd0f6ebb1b58f5bcf15
strings.TrimPrefix() args are reversed, leading to an incorrect gcov
path prefix for Rust coverage.
Bug: 156482307
Test: built and ran unicode-xid_device_tests_unicode_xid with coverage
Change-Id: I6476cee14093a7e53738019c84dbcf4333b0b9b2
When a lib has sdk_version set, an SDK variant and a platform variant
are created by the sdkMutator. Then by the versionMutator, if the
library had 'stubs.versions' property, one or more versioned variants
and one impl variant are created for each of the two (SDK and platform)
variants. As a concrete example,
cc_library {
name: "foo",
sdk_version: "current",
stubs: { versions: ["1", "2"], },
}
would create 6 variants:
1) (sdk: "", version: "")
2) (sdk: "", version: "1")
3) (sdk: "", version: "2")
4) (sdk: "sdk", version: "")
5) (sdk: "sdk", version: "1")
6) (sdk: "sdk", version: "2")
This is somewhat uncessary because the need for the SDK mutator is to
have the platform variant (sdk:"") of a lib where sdk_version is unset,
which actually makes sens for the impl variant (version:""), but not
the versioned variants (version:"1" or version:"2").
This is not only unncessary, but also causes duplicate module
definitions in the Make side when doing an unbundled build. Specifically,
The #1 and #4 above both are emitted to Make and get the same name
"foo".
To fix the problem and not to create unnecessary variants, the versioned
variants are no longer created for the sdk variant. So, foo now has
the following variants only.
1) (sdk: "", version: "") // not emitted to Make (by versionMutator)
2) (sdk: "", version: "1") // not emitted to Make (by versionMutator)
3) (sdk: "", version: "2") // emitted to Make (by versionMutator)
4) (sdk: "sdk", version: "") // not emitted to Make (by versionMutator)
Bug: 159106705
Test: Add sdk_version:"minimum" to libnativehelper in libnativehelper/Android.bp.
m SOONG_ALLOW_MISSING_DEPENDENCIES=true TARGET_BUILD_UNBUNDLED=true libnativehelper
Change-Id: I6f02f4189e5504286174ccff1642166da82d00c9
This changes the way the output filename is calculated for rust_test
binaries to be more similar to cc_test.
This also removes the option to define multiple test binaries in a
single rust_test module via the TestPerSrc mutator. Now each rust_test
module corresponds to a single test binary.
Bug: 158500462
Test: m -j pin-utils_tests_pin_utils
Test: m -j unicode-xid_device_tests_unicode_xid
Change-Id: I6e0f79dcb4e49fa49d6ebb36abeef67a9eb180a0
Use the -Z profile-emit flag to ensure that rust gcda files have
/proc/self/cwd/ appended to them similar to cc modules. This makes sure
our gcda output is consistent no matter what language the binary is
written in.
Bug: 156482307
Test: gcda outputs to the new path.
Change-Id: Ife4d55f885c7e33dffa66f7436bc2bf8b5916586
Because we are not relying on Cargo.toml for our crate dependencies,
we need to provide a structured file to rust-analyzer which describes
the locations of the crates. Add a generator for that purpose, similarly
to cc/compdb and cc/ccdeps.
Bug: 156395307
Test: SOONG_GEN_RUST_PROJECT=1 m nothing && \
cat ${ANDROID_BUILD_TOP}/out/soong/rust-project.json
Change-Id: I46efe0adeddae281eaf86707504c3aa15b5e80b8
Annotate the test config properties with android:"path", and always
use LOCAL_FULL_TEST_CONFIG to pass the path to Make.
Bug: 157621988
Test: manual
Change-Id: I1c020e642f83d994d63c9e9cb56e686086d5acaa
Rename `CoveragePath` and `CoverageExcludePaths` as
`NativeCoveragePath` and `NativeCoverageExcludePaths` (resp.).
Also rename function `android.CoverageEnabledForPath` as
`android.NativeCoverageEnabledForPath`.
Test: m nothing
Bug: 158212027
Change-Id: Id2c11a638e88088096420b537effa866d7667304
Without specifying -soname, cc binaries are unable to locate Rust
provided shared libraries. This adds the -soname linker flag for shared
libraries.
Bug: 158490355
Test: readelf -d <cc_binary> shows the expected SONAME
Change-Id: I66852a7ce24d5ea5e426f11bc1834fb56a150628
Give prebuilt_etc and sh_binary their own packages and split the
gigantic main Android.bp up to small, per-package ones.
Test: m nothing, TreeHugger
Bug: 156980228
Change-Id: I7b00cd344b9f16861f1ff39edf0029f016b853d0
Darwin builds aren't using the correct suffix for shared libraries or
proc macros (.dylib). This fixes that.
Bug: 155302034
Test: "cd external/rust; mma" no longer indicates wrong extension.
Change-Id: I5093e0bcc78dbb2dd9fcf39069f326101bb8f411
This adds gcov coverage support for Rust device library and binary
modules (including test modules). Support is provided to pass Rust
static library gcno files to CC modules and visa versa.
Additional changes:
* Begin mutator added for Rust modules.
* SuffixInList added to android package.
* CoverageEnabled added to Coverage interface.
* CoverageFiles added to LinkableLibrary interface.
* Fix in coverage mutator for non-CC modules which marked the wrong
variant as the coverage variant.
* Added coverage libraries to the cc.GatherRequiredDepsForTest.
Bug: 146448203
Test: NATIVE_COVERAGE=true COVERAGE_PATHS='*' m -j <rust_module>
Change-Id: If20728bdde42a1dd544a35a40f0d981b80a5835f
CC libraries which depend on Rust libraries get missing dependency
errors when building 32-bit variants dependent on Rust modules which
don't explicitly have "multilib: both" declared.
Because CC libraries use MultilibBoth by default, Rust should do the
same.
This also fixes a bug where the ARM32 toolchain incorrectly embedded
toolchain64Bit instead of toolchain32Bit.
Bug: 154730212
Test: Rust libraries provide both variants by default.
Change-Id: Ia545fe069d3c6b77c3d18f4f10267e2c72ee0bab
The list of required deps for testing is a lot shorter as we no longer
include as many prebuilt libraries and our list of stdlibs is much
shorter. Remove the libraries we no longer need, and add the
non-prebuilt libstd and libtest to the deps generated for every test.
Bug: 153463188
Test: Soong tests pass.
Change-Id: I94f7b514797ab8d6aedb543ea6afdb07611b7293
"version" mutator creates stubs variants for "cc" libraries with
"stubs.versions". These stubs are for APEX-APEX or APEX-Platform
boundaries.
For host/ramdisk/recovery variants, stubs are not necessary.
Exempt-From-Owner-Approval: cp from internal
Bug: 153698496
Test: m
Merged-In: Id576c4318d9d69246a4a7e2fb4145d5fd2ab9416
Change-Id: Id576c4318d9d69246a4a7e2fb4145d5fd2ab9416
(cherry picked from commit c40b5193fe)
With kernel support being removed for execute-only memory layouts,
remove support for XOM until there's kernel support again.
Bug: 153457617
Test: Rust binaries no longer have execute-only text sections.
Change-Id: I19cfb5b347a1f44394a619e17bb0c057c09e76a9
Rust binaries were installing to the wrong paths. This fixes
the install path by only including the archtype subdir when there's a
multilib conflict for that archtype.
Bug: 153423714
Test: Example rust module installs to expected path.
Change-Id: I63ea1ce7dae0d97d65522e0917d916b44808f442
Revert submission 1242911-sdk_version_variant
Reason for revert: b/153394225
Reverted Changes:
Ife99745fb:Use libnativewindow for platform variant of libagq...
I1bae84c43:Use libnativewindow for platform variant of androi...
I6e6021ed3:Use stl to depend on libc++
Ife99745fb:Use libnativewindow for platform variant of libRSS...
I2c9f439b9:Fix static dependency on libprotobuf-cpp-lite-ndk
Iff2aff9cf:Set sdk_version for cc_genrules used by modules wi...
I7d72934aa:Add sdk mutator for native modules
Ief378a007:Use sdk variant of Soong modules when LOCAL_SDK_VE...
Bug: 149591340
Change-Id: I798fa902c779469c6382b6699351e5d12bf14785
Fixes: 153394225
Compiling native modules against the NDK disables platform features
like ASAN. For anything shipped on the system image there is no
reason to compile against the NDK. Add a new mutator to Soong that
creates a platform and an SDK variant for modules that set
sdk_version, and ignore sdk_version for the platform variant. The
SDK variant will be used for embedding in APKs that may be installed
on older platforms. Apexes use their own variants that enforce
backwards compatibility.
Test: sdk_test.go
Test: TestJNIPackaging
Bug: 149591340
Change-Id: I7d72934aaee2e1326cc0ba5f29f51f14feec4521
Native modules within APEX should be linked with proper stub version
according to its min_sdk_version.
For example, when min_sdk_version is set to "29", libfoo in the apex
would be linked to libbar of version 29 from platform, even if it has
a newer version like 30.
Bug: 145796956
Test: m nothing (soong tests)
Change-Id: I4a0b2002587bc24b7deeb5d59b6eeba5e1db5b1f
The latest version of crosvm refers to minijail as a separate crate:
2dae56768c%5E%21/#F1
The current version of minijail in aosp crosvm-master isn't a crate,
but minijail in aosp master is a crate and builds with crosvm.
This allows the latest version of crosvm to build in the Android tree
and use minijail in the same tree.
Change-Id: I2231149f1488727754430183d04072c5cc0f570a
Move the NDK modules defined in app_test.go into cc/testing.go in
preparation for using sdk_version: "current" in more tests.
Test: all soong tests
Change-Id: I80bc31225fb4562fce42781219cefbbd6affae06
When linking native libraries with rustc, be explicit about the
kind of native library being linked. This prevents confusion when
two kinds of one library (e.g. static/dynamic) are available in
the library search paths.
Bug: 147140513
Test: The correct prebuilt is selected when linking native prebuilts.
Change-Id: I37975bcd284e6c33ce3dd45fab8a3b5011b0803b
The APEX dependency is more correctly tracked. Previously, the
dependency was tracked while we gather modules that will be installed to
an APEX. This actually was incorrect because we skipped many dependency
types that we don't need to follow to gather the modules list, such as
the headers dependency.
Now, the dependency is tracked directly when a module is mutated for an
APEX. In other words, if a module is mutated for an apex X, then the
module will appear in the X-deps-into.txt file.
This change also changes the format of the txt file. It now clearly
shows why a module is included in the APEX by showing the list of
modules that depend on the module.
Bug: 146323213
Test: m
Change-Id: I0a70cf9cce56e36565f9d55683fdaace8748a081
If a library happens to contain the extension as a substring in its
name, libNameFromFilePath will return a truncated library name. Change
this calculation to remove the last instance of the extension substring
instead.
Bug: 147140513
Test: Modified rust tests pass.
Change-Id: I0ed91e5f571ed5c4040ee15956a1598846aee43a
Rust has no backwards compatibility concerns, so no need to use
--use-android-relr-tags here.
Bug: http://b/147452927
Test: treehugger
Change-Id: I94de40bfad1ff2dcbc4241b944db90e0891bf9f3
cdylib targets cannot currently dynamically link to Rust crates, so this
flag was not actually doing anything, and in conjunction with -C lto
which we *do* want on for this target, causes a hard error on
rustc-1.40.0.
Bug: 147438124
Test: Build a rust_library module, this implicitly tries to build cdylib
Change-Id: I828b3e6bae7c58f4081db3e73009b443a382a296
If we want to build a component which uses two versions of a crate in
the dependency graph (for example, libc in std and libc from
external/crates), Rust requires at least one of them have a metadata
field to differentiate them.
Since Soong module names should be distinct for a given target, they
should serve as metadata.
Bug: 147397356
Test: Build a rust library with "rlibs: ["liblibc"]" in the blueprint
Change-Id: I5d85ea8b3197972c09de301c9523efaff08adf81
This reverts commit 7cb4d378e7.
Test: m
Test: ALLOW_MISSING_DEPENDENCIES=true DIST_DIR=out/dist ./art/tools/dist_linux_bionic.sh -j80 com.android.art.host
(in the master-art-host branch)
Change-Id: I9beca73aafdf42f03bfa19cf1634b2641dac417b
This reverts commit 956305c61c.
Reason for revert: broke master-art-host branch
Exempt-From-Owner-Approval: reverting a bad change
Change-Id: Id7faed4ee85328c7c65847a3543ea9e67a3d50b3
This is no longer shipped by rustc, and wasn't really intended to be
implicitly available in the first place.
Bug: 147432625
Test: Built a sample rust device binary
Change-Id: I3c33ac3726c788debe14ed39a9ecbae7a7449351
We need to have a way to see the list of modules that directly or
indirectly contribute to an APEX. People find it difficult to determine
whether a module is included in which APEXes because APEX tracks
indirect dependencies as well as direct dependencies. Therefore, just
looking at Android.bp for the APEX itself doesn't give the answer.
This change adds a new make target <apex_name>-deps-info, which
generates out/soong/<apex_name>-deps-info.txt file that shows the
internal and external dependencies of the said APEX.
Here, internal means the dependencies are actually part of the
APEX, while external means the dependencies are still external to the
APEX.
Bug: 146323213
Test: m (apex_test amended)
Change-Id: I33d1ccf5d1ca335d71cd6ced0f5f66b8c3886d13
The cc.GatherRequiredDepsForTest() method returns some default module
definitions that are required when using cc module types like
cc_library. Previously, the registration of the module types and
mutators needed to process those default definitions was duplicated
in the test config initialization.
This change removes that duplicated code and replaces it with calls
to cc.RegisterRequiredBuildComponentsForTest(ctx) which registers all
the required build components.
Test: m checkbuild
Bug: 146540677
Change-Id: I80b6913c5691ff164ce9d308b9e1da24940f2d42
The filesystem object was available through ModuleContext.Fs(), but
gives too much access to the filesystem without enforicing correct
dependencies. In order to support sandboxing the soong_build
process move the filesystem into the Config. The next change will
make it private.
Bug: 146437378
Test: all Soong tests
Change-Id: I5d3ae9108f120fd335b21efd612aefa078378813
The clang-r370808 upgrade contains a change to LLD allow PT_LOAD
segments to reside at non-multiples of the page size in the resulting
object file. https://reviews.llvm.org/rL369344
While this helps reduce the alignment waste and resulting image size, it
has interesting implications for execute only memory (XOM): The runtime
loader will now load code or data from other segments into pages with
different protections than intended.
This would partially defeat execute only (XOM) text sections as the
segment could now overlap with previous and following sections. This
might allow for code or data from the preceding and following sections
(like .eh_frame, and .data.rel.ro) to be executable, and either ends of
.text to be readable.
When the runtime loader (linker[64]) `mmap`s segments from *.so files,
the file offset parameter (see `man 2 mmap`) MUST be a multiple of the
page size. Since the updated LLD can now pack segments in a file (which
helps minimize resulting object file size) (previously, the segment
offsets were page aligned), this has interesting implications.
To appreciate the current bug, consider the following output from
`readelf` before this patch is applied, but after the toolchain upgrade:
```
$ readelf -lSW $OUT/symbols/apex/com.android.runtime/lib64/bionic/libc.so
...
[Nr] Name Type Address Off Size ES Flg Lk Inf Al
...
[13] .eh_frame PROGBITS 000000000002e7c0 02e7c0 013374 00 A 0 0 8
[14] .text PROGBITS 0000000000042b40 041b40 09ecb4 00 AX 0 0 64
[15] .plt PROGBITS 00000000000e1800 0e0800 001f30 00 AX 0 0 16
[16] .data.rel.ro PROGBITS 00000000000e4740 0e2740 005208 00 WA 0 0 32
...
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
PHDR 0x000040 0x0000000000000040 0x0000000000000040 0x000230 0x000230 R 0x8
LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x041b34 0x041b34 R 0x1000
LOAD 0x041b40 0x0000000000042b40 0x0000000000042b40 0x0a0bf0 0x0a0bf0 E 0x1000
LOAD 0x0e2740 0x00000000000e4740 0x00000000000e4740 0x006720 0x006720 RW 0x1000
...
01 .note.android.ident .note.gnu.build-id .dynsym .gnu.version .gnu.version_d .gnu.version_r .gnu.hash .dynstr .rela.dyn .rela.plt .rodata .eh_frame_hdr .eh_frame
02 .text .plt
03 .data.rel.ro .fini_array .init_array .dynamic .got .got.plt
...
The above output tells us:
1. .text will wind up in the third (02) segment.
2. The third segment will be (LOAD)'ed as (E)xecutable.
3. Because the file (Offset) of the first segment (0x41b40) is NOT a
multiple of the page size, it cannot be passed as the `offset` to
`mmap`. As such it will be rounded down to the first multiple of the
page size, 0x41000.
4. The preceding section (.eh_frame) will be loaded in the preceding
segment (01). It occupies file (Off)set range [(0x2e7c0):0x41b34].
0x41b34 is not explicit in the output, instead you must use the
formula:
Off + Size == End
ie.
0x2e7c0 + 0x13374 == 0x41b34
(This happens to match (FileSiz) of the second segment, which makes
sense as .eh_frame is the final section in the second segment.)
5. mmap'ing file offset 0x41000 when loading the second segment will
include 0x4c0 bytes (0x42000 - 0x41b40) from .text, now mapped as
readable (oops). Suddenly code from .text is now readable (and thus
scannable for gadgets for ROP chains).
6. mmap'ing file offset 0x41000 when loading the third segment will
include 0xb34 bytes (0x41b34 - 0x41000) from .eh_frame, now mapped as
executable (oops). Suddenly data from .eh_frame is now executable
(and thus a potential gadget for ROP chains).
7. mmap'ing file offset 0xe2000 when loading the third segment will
include 0x8CO bytes (0xe3000 - 0xe2740) from .data.rel.ro, now mapped
as executable (oops). Suddenly data from .data.rel.ro is now
executable (and thus a potential gadget for ROP chains).
8. mmap'ing file offset 0xe2000 when loading the fourth segment will
include 0x730 bytes (0xe0800 + 0x1f30 - 0xe2000) from .plt, now
mapped as readable (oops). Suddenly data from .plt is now readable
(and thus scannable for gadgets for ROP chains).
All these oops' could be avoided if the linker placed .text+.plt at page
size aligned file offsets, which is what `-Wl,-z,separate-code` code
does. After this patch, we have:
```
$ readelf -lSW $OUT/symbols/apex/com.android.runtime/lib64/bionic/libc.so
...
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
PHDR 0x000040 0x0000000000000040 0x0000000000000040 0x000230 0x000230 R 0x8
LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x041b34 0x041b34 R 0x1000
LOAD 0x042000 0x0000000000042000 0x0000000000042000 0x0a0be0 0x0a0be0 E 0x1000
LOAD 0x0e3000 0x00000000000e3000 0x00000000000e3000 0x006720 0x006720 RW 0x1000
```
In the future, we could go back to tightly packing segments in the
binary if the runtime loader was improved to detect the previously
stated problem, and `memset` over the problematic ranges of the freshly
`mmap`ed pages (implying additional startup cost for reduced binary
size). This might save ~6 KB from each native binary, which adds up to
~17 MB for an AOSP image.
Also, prefer
-Wl,--execute-only
rather than
-Wl,-execute-only
Bug: 139945549
Bug: 146144180
Test: readelf -lSW $OUT/symbols/apex/com.android.runtime/lib64/bionic/libc.so
Change-Id: I64527e034ca3c71565ea52ed06f81f75d5216627
Reported-by: Ryan Prichard <rprichard@google.com>
Suggested-by: Fangrui Song <maskray@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Use the empty string for the core image variant so that modules
added to imageMutator do not change their build directory.
Bug: 142286466
Test: m checkbuild
Change-Id: Ida4534d9a4d6176236aaa480fed359ce27acfaa1
Merged-In: Ida4534d9a4d6176236aaa480fed359ce27acfaa1
(cherry picked from commit 72d685ee7f45e5393be44ae4159edf083ac918de)
