Commit Graph

12 Commits

Author SHA1 Message Date
Siva Chandra Reddy 911f2e7dc4 [libc] Add a GNU extensions spec containing sincosf from math.h.
Reviewers: abrachet

Differential Revision: https://reviews.llvm.org/D76783
2020-03-25 15:13:22 -07:00
Siva Chandra Reddy 2c080a3f23 [libc] Generate math.h instead of the static file it is currently.
Just enough to help a follow up patch adding cosf and sinf has been
added.

Reviewers: abrachet

Differential Revision: https://reviews.llvm.org/D76723
2020-03-24 21:17:55 -07:00
Alex Brachet ca04d0c8fd [libc] Add signal
Summary:
This patch adds a Linux implementation for `signal`
It also fixes `ASSERT|EXPECT_THAT` macros

Reviewers: sivachandra, PaulkaToast, MaskRay

Reviewed By: sivachandra

Subscribers: mgorny, tschuett, libc-commits

Differential Revision: https://reviews.llvm.org/D76536
2020-03-22 14:15:47 -04:00
Alex Brachet 4d35055635 [libc] Add sigaction
Summary: This patch adds `sigaction` and the `sa_restorer` signal trampoline function `__restore_rt`

Reviewers: sivachandra, MaskRay, PaulkaToast

Reviewed By: sivachandra

Subscribers: gchatelet, mgorny, tschuett, libc-commits

Differential Revision: https://reviews.llvm.org/D75802
2020-03-18 01:08:59 -04:00
Alex Brachet b47c9f535c [libc] Add initial assert definition
Summary: This patch adds a temporary `__assert_fail` and `assert` definition to make it available to internal llvm libc code. `__assert_fail` writes to fd 2 directly instead of `stderr`, using SYS_write. I have not put it in its own linux directory because this is temporary and it should be using stdio's api in the future. It does not currently print out the line number (although we could do that by stringifying `__LINE__` if reviewers wish).

Reviewers: sivachandra, gchatelet, PaulkaToast

Reviewed By: sivachandra

Subscribers: mgorny, MaskRay, tschuett, libc-commits

Differential Revision: https://reviews.llvm.org/D75420
2020-03-11 23:45:58 -04:00
Alex Brachet a499d68056 [libc] Create abort and _Exit
This revision creates abort and _Exit implementations

Differential Revision: https://reviews.llvm.org/D74949
2020-03-05 14:21:18 -05:00
Alex Brachet cd76a02639 [libc] Add sigprocmask
Summary: This patch adds `sigprocmask`, `sigemptyset` and `sigaddset`

Reviewers: sivachandra, MaskRay, gchatelet

Reviewed By: sivachandra

Subscribers: mgorny, tschuett, libc-commits

Differential Revision: https://reviews.llvm.org/D75026
2020-03-02 03:47:21 -05:00
Siva Chandra Reddy d1536673c6 [libc] Add ability to generate enum types/values to HdrGen.
A target to generate the std C threads.h file has been added. This
utilizes the new feature added in this change.

Reviewers: phosek

Differential Revision: https://reviews.llvm.org/D75379
2020-02-28 23:27:32 -08:00
Alex Brachet 5d2baa956a [libc] Add Initial Support for Signals
Summary:
This patch adds signal support on Linux. The current implementation gets the SIG* macros and types like `sigset_t` from <linux/signals.h>

This patch also adds raise(3), and internal routines  `block_all_signals` and `restore_signals`

Reviewers: sivachandra, MaskRay, gchatelet

Reviewed By: sivachandra

Subscribers: libc-commits, mgorny, tschuett

Differential Revision: https://reviews.llvm.org/D74528
2020-02-20 14:05:34 -05:00
Siva Chandra Reddy e5a743c4f6 Add implementations of POSIX mmap and munmap functions.
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
2019-12-23 14:04:02 -08:00
Siva Chandra Reddy 453c85ff0f [libc] Add implementation of errno and define the other macros of errno.h.
Reviewers: stanshebs, alexbrachet

Subscribers: mgorny, MaskRay, tschuett, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D71094
2019-12-09 13:34:08 -08:00
Siva Chandra Reddy b47f9eb55d [libc] Add a TableGen based header generator.
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
2019-11-22 13:02:24 -08:00