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7 Commits

Author SHA1 Message Date
Petr Hosek 8908aa4e30 [Fuzzer] Migrate Fuchsia port from launchpad to fdio_spawn 
fdio_spawn is the new public API for launching processes in Fuchsia.

Differential Revision: https://reviews.llvm.org/D47649

llvm-svn: 333809
 2018-06-02 01:17:10 +00:00
Petr Hosek 796bb7d4ce [Fuzzer] Update _zx_port_wait function use in Fuchsia port 
Fuchsia's _zx_port_wait no longer takes the count argument. This
change also updates all symbol uses to use the underscored versions.

Differential Revision: https://reviews.llvm.org/D47403

llvm-svn: 333328
 2018-05-26 01:02:34 +00:00
Petr Hosek dd097445f0 [Fuzzer] Add a missing header in Fuchsia implementation 
This is needed for fd_set.

Differential Revision: https://reviews.llvm.org/D45852

llvm-svn: 330383
 2018-04-20 00:41:06 +00:00
Petr Hosek 7a31c7ad23 [Fuzzer] Make InterruptHandler non-blocking for Fuchsia 
The initial naive approach to simulate SIGINT on Fuchsia was to getchar
and look for ETX. This caused the InterruptHandler thread to lock stdin,
preventing musl's exit() from being able to close the stdio descriptors
and complete. This change uses select() instead.

Patch By: aarongreen

Differential Revision: https://reviews.llvm.org/D45636

llvm-svn: 330328
 2018-04-19 14:01:46 +00:00
Petr Hosek 2f70693e08 [Fuzzer] Use Zircon's public API on Fuchsia 
The original libFuzzer Fuchsia port relied on convenience libraries,
but these are not exported as part of Fuchsia sysroot. This change
eliminates the use of these libraries and relies on public API only.

Differential Revision: https://reviews.llvm.org/D42996

llvm-svn: 324454
 2018-02-07 08:22:58 +00:00
Petr Hosek b1eaa56704 [fuzzer] Update and enable libFuzzer on Fuchsia 
This change updates the Fuchsia-specific code to use the C++ friendly
duration expressions and flips on the building of
libclang_rt.fuzzer-x86_64.a and similar for Fuchsia. Given that
compiler-rt doesn't build on Fuchsia, test have been run by explicitly
building the library and linking it against
lib/fuzzer/tests/FuzzerUnittest.cpp.

Differential Revision: https://reviews.llvm.org/D42670

llvm-svn: 323828
 2018-01-30 22:59:48 +00:00
Matt Morehouse ffb1132e52 [libFuzzer] Add support for Fuchsia OS. 
Summary:
This patch adds the initial support for Fuchsia.

- LIBFUZZER_FUCHSIA is added as an OS type in FuzzerDefs.h
- Fuchsia is, by design, not POSIX compliant. However, it does use ELF and
  supports common POSIX I/O functions. Thus, FuzzerExtFunctions.h and
  FuzzerIO.h are implemented by extending the header guards in
  FuzzerExtFunctionsWeak.cpp and FuzzerIOPosix.cpp to include
  LIBFUZZER_FUCHSIA.
- The platform-specific portions of FuzzerUtil.h are implemented by
  FuzzerUtilFuchsia.cpp, which makes use of exception ports, syscalls, and
  the launchpad library.
- The experimental equivalence server is not currently supported, so
  FuzzerShmem.h is implemented by stub methods in FuzzerShmemFuchsia.cpp.
  Any future implementation will likely involve VMOs.

Tested with ASAN/SanCov on Fuchsia/x86-64 with the canonical toy fuzzer.

Patch By: aarongreen

Reviewers: kcc, morehouse, flowerhack, phosek

Reviewed By: kcc, phosek, Eugene.Zelenko

Subscribers: srhines, mgorny, Eugene.Zelenko

Differential Revision: https://reviews.llvm.org/D40974

llvm-svn: 320210
 2017-12-08 22:54:44 +00:00