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107 Commits

Author SHA1 Message Date
Jonathan Marler
48660371a2 std.meta: add assumeSentinel 2020-11-29 10:36:02 -08:00
Koakuma
f10bff9ffb Add a comment to explain the fork return values on sparc64 2020-11-28 13:24:24 +07:00
Koakuma
41c40f4bbe Fix fork() on Linux/sparc64 
fork() on Linux/sparc64 seems to return its result in two registers,
with %o0 always holding the current process' PID, and the parent/child
status returned in %o1. Add some glue code to convert those into
the libc-style return value.
 2020-11-27 23:02:22 +07:00
LemonBoy
0a84f85945 Minor code cleanup in start_pie.zig 
Thanks @daurnimator for catching this.
 2020-11-23 12:36:40 +01:00
Andrew Kelley
abc717f203 modernize the PIE patch for the latest master branch 
This is the part of #3960 that has to be rewritten to apply to latest
master branch code.
 2020-11-22 17:28:11 -07:00
Andrew Kelley
55ab50efbd Merge branch 'piepiepie' of https://github.com/LemonBoy/zig into pie 
Conflicts:
 lib/std/dynamic_library.zig (fixed in this commit)
 src/all_types.hpp
 src/codegen.cpp
 src/link.cpp
 src/main.cpp

Will manually apply the diffs to these deleted files to the new zig
code in a followup commit.
 2020-11-22 12:39:44 -07:00
Andrew Kelley
c9551652b0
Merge pull request #6978 from LemonBoy/statshit 
Decouple kernel and libc stat definitions
 2020-11-05 17:27:22 -05:00
Andrew Kelley
f85d719952
Merge pull request #6895 from jorangreef/fallocate 
linux: add fallocate()
 2020-11-05 17:23:00 -05:00
LemonBoy
0e95fa455c std: Split kernel&libc definitions of stat struct 
There's no guarantee for the kernel definition to be ABI compatible with
the libc one (and vice versa).
There's also no guarantee of ABI compatibility between musl/glibc.

Fun, isn't it?
 2020-11-05 09:38:50 +01:00
LemonBoy
f313c88428 std: Fix pipe syscall stub for sparc64 2020-11-04 15:54:38 +01:00
Joran Dirk Greef
8193f55820 Support 32-bit big-endian targets 2020-11-03 06:03:38 +02:00
Joran Dirk Greef
78e9e131e0 Pending #5127 2020-11-02 12:37:55 +02:00
Joran Dirk Greef
067bd7e424 Switch back to writing Zig 2020-11-02 09:55:25 +02:00
Joran Dirk Greef
9dec310826 Debug unhandled errno 2020-11-02 09:52:42 +02:00
Andrew Kelley
909aae8153
Merge pull request #6792 from koachan/sparc64-linux 
Initial sparc64-linux bringup
 2020-11-01 22:14:56 -05:00
Joran Dirk Greef
a67f140d2f Add test 2020-11-01 11:55:27 +02:00
Andrew Kelley
a41c0b63bb
Merge pull request #6356 from jorangreef/io_uring 
std: add io_uring library
 2020-10-29 18:20:38 -04:00
Frank Denis
74a1175d9d std/*: add missing MIT license headers 2020-10-26 17:41:29 +01:00
Koakuma
f018201009 Predict error-less path on syscalls 2020-10-25 20:07:18 +07:00
Koakuma
2e7a4758b3 Add back ppc input/output/clobber definitions 
Accidentally removed when rebasing, this adds it back.
 2020-10-25 13:39:22 +07:00
Koakuma
300cfbf252 Add TLS implementation for sparc64 2020-10-24 20:03:40 +07:00
Koakuma
6146f81c6e Add pipe(2) support 2020-10-24 20:03:37 +07:00
Koakuma
dba009fd21 Account for the delay slot 2020-10-24 20:01:32 +07:00
Koakuma
23433fb317 Fix register naming 2020-10-24 19:59:05 +07:00
Koakuma
e5a11020cc Add sparc64 syscall interface 2020-10-24 19:59:04 +07:00
LemonBoy
0c355bef9e std: Slim down the error code path in initStaticTLS 
Calling @panic made the executable ~30x times bigger, use a simple
`abort()` and let the user figure out what went wrong.

Supporting ARMv6 (and earlier?) platforms is not a priority.

Closes #6676
 2020-10-21 23:35:06 -04:00
Tadeo Kondrak
2b4b03d301
Update zig files for opaque type syntax 2020-10-06 22:08:25 -06:00
Joran Dirk Greef
e9ba12f456 Test the range of user_data bits 2020-10-05 09:36:07 +02:00
Joran Dirk Greef
9be2941091 Split openat/close test into two separate tests 
If an older kernel fails the `openat` test because of `AT_FDCWD`
then we don't want to skip the `close` test.
 2020-10-04 17:48:05 +02:00
Joran Dirk Greef
958ff087f2 Use const wherever possible 2020-10-04 16:57:04 +02:00
Joran Dirk Greef
72bdfa5bdd Skip openat test only for older kernels that do not fully support AT_FDCWD 2020-10-04 16:05:52 +02:00
Joran Dirk Greef
9091fcbe9d Improve openat/accept test debugging 2020-10-04 15:11:09 +02:00
Joran Dirk Greef
6a53f4be4b Add openat(), close(), connect(), send(), recv(), as well as tests 
Removes non-essential .hardlink_with_next_sqe() and .drain_previous_sqes().
 2020-10-04 13:15:39 +02:00
Joran Dirk Greef
3d2de6cfba Use load relaxed semantics when reading the SQPOLL wakeup flag 2020-10-04 13:14:57 +02:00
Joran Dirk Greef
69a55fc560 Allow for advanced non-sequential SQE allocation schemes 
Decouples SQE queueing and SQE prepping methods to allow for non-sequential
SQE allocation schemes as suggested by @daurnimator.

Adds essential SQE prepping methods from liburing to reduce boilerplate.

Removes non-essential .link_with_next_sqe() and .use_registered_fd().
 2020-10-04 13:01:41 +02:00
Joran Dirk Greef
e32c7d06e5 Limit entries to u12, add errors for invalid entries, use mem.zeroInit 2020-10-04 12:49:48 +02:00
Joran Dirk Greef
61ec6cb6d3 Expose available kernel features 2020-10-04 12:48:08 +02:00
Joran Dirk Greef
a9b107045f Use load acquire semantics when reading the SQPOLL wakeup flag 
Ensures that the wakeup flag is read after the tail pointer has been
written. It's important to use memory load acquire semantics for the
flags read, otherwise the application and the kernel might not agree on
the consistency of the wakeup flag, leading to I/O starvation.

Refs: 6768ddcc56
Refs: https://github.com/axboe/liburing/issues/219
 2020-10-03 14:34:42 +02:00
Joran Dirk Greef
95def89c23 Handle EBADFD (ring fd in bad state) in enter() 2020-10-03 14:34:01 +02:00
Joran Dirk Greef
2d8df2b745 Use @intCast instead of @truncate 2020-09-21 12:03:52 +02:00
Joran Dirk Greef
7719abbf54 Add flags to queue_fsync() signature as per liburing 2020-09-21 11:09:37 +02:00
Joran Dirk Greef
57603fd26d Use @intCast instead of @truncate on io_uring_enter() result 2020-09-21 11:09:09 +02:00
Joran Dirk Greef
575ed941d7 Cache mask instead of dereferencing mask pointer 2020-09-21 11:07:11 +02:00
Joran Dirk Greef
77903f8d4e Test structs and offsets 2020-09-20 18:45:44 +02:00
Joran Dirk Greef
e51728a1b4 Make enter(), flush_sq(), sq_ring_needs_enter(), cq_ring_needs_flush() public 
These will also be needed by any custom helpers
 2020-09-20 15:54:31 +02:00
Joran Dirk Greef
40293a0643 Add safety checks 2020-09-20 15:41:22 +02:00
Joran Dirk Greef
f22eea82c4 Fix opcode support detection for read/write test 2020-09-20 15:33:48 +02:00
Joran Dirk Greef
b672dc7abf Use os.fd_t instead of i32 and assert against c_int for syscall safety 2020-09-20 14:59:40 +02:00
Joran Dirk Greef
abebacda32 Handle all possible syscall errors and bring errors in line with os.zig 2020-09-20 14:21:44 +02:00
Joran Dirk Greef
4bc1b7a7ac Fix io_uring_sqe to use the names of the first member of each union 
Now we're really future-proof... no more `opflags` creeping in.

When anonymous unions land, we can start using `accept_flags` etc.

Until then, code using this struct won't break when the kernel adds features.

Refs: https://github.com/ziglang/zig/issues/6349
Refs: https://github.com/ziglang/zig/issues/985
 2020-09-19 18:50:24 +02:00