This adds a very simple loader. This will be extended to a full loader
in future patches. A utility rule to add unittests has been added to
serve us while we are building out the full loader.
Reviewers: abrachet, phosek
Differential Revision: https://reviews.llvm.org/D76412
Summary:
The patch is not ready yet and is here to discuss a few options:
- How do we customize the implementation? (i.e. how to define `kRepMovsBSize`),
- How do we specify custom compilation flags? (We'd need `-fno-builtin-memcpy` to be passed in),
- How do we build? We may want to test in debug but build the libc with `-march=native` for instance,
- Clang has a brand new builtin `__builtin_memcpy_inline` which makes the implementation easy and efficient, but:
- If we compile with `gcc` or `msvc` we can't use it, resorting on less efficient code generation,
- With gcc we can use `__builtin_memcpy` but then we'd need a postprocess step to check that the final assembly do not contain call to `memcpy` (unlikely but allowed),
- For msvc we'd need to resort on the compiler optimization passes.
Reviewers: sivachandra, abrachet
Subscribers: mgorny, MaskRay, tschuett, libc-commits, courbet
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D74397
Summary:
Added fuzzing test for strcpy and some documentation related to fuzzing.
This will be the first step in integrating this with oss-fuzz.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra, abrachet
Subscribers: gchatelet, abrachet, mgorny, MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D74091
Some of the existing utils in utils/UnitTest/Test.h have been moved to
this new library.
Reviewers: abrachet, gchatelet
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D73530
A toplevel target, `check-libc` has also been added.
Reviewers: abrachet, phosek
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D72177
Summary:
A set of of linux x86_64 internal syscall helpers have also been added.
This change does not try to be perfect with respect to OS and machine
abstractions. A TODO note has been added at places where such abstractions
would help and make the arrangement scalable and cleaner. Addressing the
TODOs and building such abstractions is not in the scope of this change.
It is hoped that follow up changes cleaning up the problem areas and
addressing the TODOs will better illustrate the need for the changes.
This change also does not try to imitate mmap and munmap implementations
of other libcs. The idea here is to put in the bare minimum required to
obtain a working mmap and munmap, and then add the rest of the
functionality on an as needed basis.
Reviewers: abrachet, phosek, stanshebs, theraven
Subscribers: mgorny, MaskRay, jfb, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D71634
Summary:
* The Python header generator has been removed.
* Docs giving a highlevel overview of the header gen scheme have been
added.
Reviewers: phosek, abrachet
Subscribers: mgorny, MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D70197
Summary:
This patch illustrates some of the features like modularity we want
in the new libc. Few other ideas like different kinds of testing, redirectors
etc are not yet present.
Reviewers: dlj, hfinkel, theraven, jfb, alexshap, jdoerfert
Subscribers: mgorny, dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D67867
llvm-svn: 373764
Paula Toth