182 Commits

Author SHA1 Message Date
Jeff Bailey
8aec3b126b [libc] Introduce sys/socket.h
This adds sys/socket.h and some definitions on Linux.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D144415
2023-02-23 07:11:20 +00:00
Siva Chandra Reddy
740db97ad1 [libc][NFC] Simplify how the definiton of NULL macro is added to string.h.
We do not list macro definitions in api.td files anymore. Not all macros
definitions have been moved out. This change moves the definition of the
NULL macro out.

Reviewed By: lntue, jhuber6

Differential Revision: https://reviews.llvm.org/D140376
2022-12-20 19:14:27 +00:00
Siva Chandra Reddy
5e750b86ca [libc] Simplify generation of errno.h.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D140375
2022-12-20 19:04:13 +00:00
Siva Chandra Reddy
15ae08c1a1 [libc] Add definitions of a few missing macros and types. 2022-11-02 07:17:33 +00:00
Siva Chandra Reddy
22ea0e5d9b [libc] Add Linux implementations of time and clock functions.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D136666
2022-10-25 18:06:05 +00:00
Siva Chandra Reddy
be4e425758 [libc] Add select.h and the implementation of the select function for Linux.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D136375
2022-10-22 03:17:48 +00:00
Siva Chandra Reddy
67957368ae [libc] Add implementation of sigaltstack for linux.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D135949
2022-10-18 22:04:30 +00:00
Siva Chandra Reddy
b2a294bcf8 [libc] Add termios.h and the implementation of functions declared in it.
Reviewed By: lntue, michaelrj

Differential Revision: https://reviews.llvm.org/D136143
2022-10-18 20:53:00 +00:00
Michael Jones
35a4fe4c0b [libc] add headers sys/auxv sys/prctl and sys/time
These headers are uncommonly used, and from extensions, but some basic
support is needed. Macros have been added where available.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D135731
2022-10-12 13:19:50 -07:00
Michael Jones
7639ba6906 [libc] add isatty
The isatty function uses the side effects of an ioctl call to determine
if a specific file descriptor is a terminal. I chose TIOCGETD (get line
discipline of terminal) because it didn't require any new structs.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D135618
2022-10-10 15:20:46 -07:00
Michael Jones
1ac525b28b [libc] add sysconf with pagesize
The sysconf function has many options, this patch adds the basic funtion
and the pagesize option. More options will be added in future patches.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D135409
2022-10-10 14:51:45 -07:00
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
Michael Jones
38b6f58e33 [libc] implement basic rand and srand
This provides the reference implementation of rand and srand. In future
this will likely be upgraded to something that supports full ints.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D135187
2022-10-04 13:31:26 -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
827575a7f8 [libc] Add implementation of POSIX lseek function.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D121676
2022-03-15 16:24:48 +00:00
Siva Chandra Reddy
4ef02da094 [libc] Add a platform independent buffered file IO data structure.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D119458
2022-02-15 05:34:29 +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