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1. Remove unnecessary includes.
2. Remove thunk function in threaded mode.
3. Inline syscalls into main for the simplest case.
4. Define main in common.h rather than form with printfs.
5. Fix generation for repeat mode
(we had 2 infinite loops: in main and in loop).
6. Remove unused functions (setup/reset_loop, setup/reset_test,
sandbox_namespace, etc).
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Make as much code as possible shared between all OSes.
In particular main is now common across all OSes.
Make more code shared between executor and csource
(in particular, loop function and threaded execution logic).
Also make loop and threaded logic shared across all OSes.
Make more posix/unix code shared across OSes
(e.g. signal handling, pthread creation, etc).
Plus other changes along similar lines.
Also support test OS in executor (based on portable posix)
and add 4 arches that cover all execution modes
(fork server/no fork server, shmem/no shmem).
This change paves way for testing of executor code
and allows to preserve consistency across OSes and executor/csource.
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Since we are taking address of functions in syscall table,
we need all headers even if we don't use them directly.
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We removed it in executor, do the same in csource.
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Lots of assorted heavylifting to support csource on fuchsia.
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The call signature has changed in zircon.
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* fuchsia: Fix the `extractor` tool.
The include path in Zircon has changed; updated syz-extract/fuchsia.go
to include this, and re-ran extract to get updated *.const files.
* fuchsia: Update syzkaller to build with current Fuchsia API.
Fuchsia doesn't have a stable API right now, so alas, this will probably
continue to change until that's nailed down.
But, useful to get this up-to-date at least.
Relevant notes:
* zx_channel_call_finish and _retry aren't technically public; leave
them out until we have a less-cludgy way to expose them
* musl supports setjmp/longjmp but not _setjmp/_longjump
* remove some unsupported syscalls
* update the build invocation
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The "define uint64_t unsigned long long" were too good to work.
With a different toolchain I am getting:
cstdint:69:11: error: expected unqualified-id
using ::uint64_t;
^
executor/common.h:34:18: note: expanded from macro 'uint64_t'
Do it the proper way: introduce uint64/32/16/8 types and use them.
pkg/csource then does s/uint64/uint64_t/ to not clutter code with
additional typedefs.
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Some standard libraries contain "using ::exit;",
which breaks with the current redefinition of exit.
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We currently use more complex and functional protocol on linux,
and a simple ad-hoc protocol on other OSes.
This leads to code duplication in both ipc and executor.
Linux supports coverage, shared memory communication and fork server,
which would also be useful for most other OSes.
Unify communication protocol and parametrize it by
(1) use of shmem or only pipes, (2) use of fork server.
This reduces duplication in ipc and executor and will
allow to support the useful features for other OSes easily.
Finally, this fixes akaros support as it currently uses
syz-stress running on host (linux) and executor running on akaros.
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