18 Commits

Author SHA1 Message Date
Schrodinger ZHU Yifan
9eb11856cf Implement getrandom function for linux targets.
Reviewed By: michaelrj, sivachandra

Differential Revision: https://reviews.llvm.org/D134665
2022-10-10 11:00:35 -07:00
Siva Chandra Reddy
995105de1b [libc] Add the POSIX waitpid function and the BSD wait4 function.
Reviewed By: lntue, michaelrj

Differential Revision: https://reviews.llvm.org/D135225
2022-10-05 07:38:55 +00:00
Michael Jones
0b790afb06 [libc] add CPU_COUNT macro and backing function
Add the macro CPU_COUNT as well as a backing function to implement the
functionality.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D135179
2022-10-04 15:22:55 -07:00
Siva Chandra Reddy
e3638e83db [libc] Add a minimal implementation of the POSIX fork function.
A very simple and minimal implementation of fork is added. Future
changes will add more functionality to satisfy POSIX and Linux
requirements.

An implementation of wait and a few support macros in sys/wait.h
have also been added to help with testing the fork function.

Reviewed By: lntue, michaelrj

Differential Revision: https://reviews.llvm.org/D135131
2022-10-04 19:12:08 +00:00
Michael Jones
1801c356f6 [libc] add syscall function
Add the syscall wrapper function and tests. It's implemented using a
macro to guarantee the minimum number of arguments.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D134919
2022-09-30 15:46:28 -07:00
Siva Chandra Reddy
215c9fa4de [libc] Re-enable functions from signal.h and re-enable abort.
They were disabled because we were including linux/signal.h from our
signal.h. Linux's signal.h is not designed to be included from user
programs as it causes a lot of non-standard name pollution. Also, it is
not self-contained. This change defines types and macros relevant for
signal related syscalls within libc's headers and removes inclusion of
Linux headers.

This patch enables the funtions only for x86_64. They will be enabled
for aarch64 also in a follow up patch after testing.

Reviewed By: abrachet, lntue

Differential Revision: https://reviews.llvm.org/D134567
2022-09-30 07:31:50 +00:00
Michael Jones
b49d626cb4 [libc] add clock_gettime
Add the clock_gettime syscall wrapper and tests.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D134773
2022-09-29 10:23:21 -07:00
Michael Jones
8d615a5e8a [libc] move sys/mman macros to /include
Previously the mman macros were in api.td, but platform differences are
easier to handle with preprocessor macros so they have been moved to
include. Also I completed the list of macros (at least for what I need
soon) and fixed some previously incorrect values.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D134491
2022-09-23 09:36:34 -07:00
Siva Chandra Reddy
e310f8bddf [libc] Add implementation of functions stat, fstat and lstat.
All supporting type and macro definitions have also been added.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D134262
2022-09-21 18:35:02 +00:00
Siva Chandra Reddy
f5cbbb9988 [libc] Add implementation of POSIX setrlimit and getrlimit functions.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D134016
2022-09-16 20:50:28 +00:00
Siva Chandra Reddy
419580c699 [libc] Add implementation of POSIX function "access".
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D133814
2022-09-14 07:44:47 +00:00
Siva Chandra Reddy
8989aa003f [libc] Add POSIX functions dup, dup2, and GNU extension function dup3.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D133748
2022-09-13 18:06:30 +00:00
Siva Chandra Reddy
055322891c [libc] Add Linux implementations of POSIX chdir, fchdir, chmod and fchmod.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D132445
2022-08-23 17:16:49 +00:00
Siva Chandra Reddy
3496dd3bb6 [libc][Obvious] Move some macros definitions to sys/stat.h.
They were previously incorrectly listed in fcntl.h
2022-08-22 23:19:18 +00:00
Siva Chandra Reddy
4c1b44160a [libc] Adjust few fcntl macros for aarch64. 2022-02-01 08:14:32 +00:00
Siva Chandra Reddy
b8385162c2 [libc] Add implementations of POSIX mkdir, mkdirat, rmdir, unlink and unlinkat.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D118641
2022-02-01 05:17:10 +00:00
Siva Chandra Reddy
4abfe47e1f [libc] Add implementations of the POSIX creat and openat functions.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D118435
2022-01-28 19:28:12 +00:00
Siva Chandra Reddy
dc2b01b3f7 [libc] Add POSIX close, fsync, open, read and write functions.
They are implemented as simple syscall wrappers. The file creation
macros have been put in a header file as a temporary solution until we
have a cleaner approach to listing platform relevant macros.

Reviewed By: abrachet

Differential Revision: https://reviews.llvm.org/D118396
2022-01-27 20:32:02 +00:00