Commit Graph

40 Commits

Author SHA1 Message Date
Mark Rousskov
0a916062aa Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
Nilstrieb
5830ca216d Add internal_features lint
It lints against features that are inteded to be internal to the
compiler and standard library. Implements MCP #596.

We allow `internal_features` in the standard library and compiler as those
use many features and this _is_ the standard library from the "internal to the compiler and
standard library" after all.

Marking some features as internal wasn't exactly the most scientific approach, I just marked some
mostly obvious features. While there is a categorization in the macro,
it's not very well upheld (should probably be fixed in another PR).

We always pass `-Ainternal_features` in the testsuite
About 400 UI tests and several other tests use internal features.
Instead of throwing the attribute on each one, just always allow them.
There's nothing wrong with testing internal features^^
2023-08-03 14:50:50 +02:00
bjorn3
b874502a20 Remove unnecessary raw pointer in __rust_start_panic arg
It is no longer necessary as __rust_start_panic switched to the Rust abi.
2023-03-26 16:40:18 +00:00
jonathanCogan
db47071df2 Replace libstd, libcore, liballoc in line comments. 2022-12-30 14:00:42 +01:00
Collin Baker
dfab01b6e0 Remove std's transitive dependency on cfg-if 0.1
After rust-lang/rust#101946 this completes the move to cfg-if 1.0 by:
* Updating getrandom 0.1.14->0.1.16
* Updating panic_abort, panic_unwind, and unwind to cfg-if 1.0
2022-11-02 18:01:20 -04:00
Amanieu d'Antras
a54ddd494f Update comment about personalities in panic_abort 2022-08-23 16:12:58 +08:00
Amanieu d'Antras
c110329f25 Remove custom frame info registration on i686-pc-windows-gnu
The indirection is no longer needed since we always link to libgcc
even when the panic_abort runtime is used. Instead we can just call
the libgcc functions directly.
2022-08-23 16:12:58 +08:00
Amanieu d'Antras
5ff0876694 Move personality functions to std
These were previously in the panic_unwind crate with dummy stubs in the
panic_abort crate. However it turns out that this is insufficient: we
still need a proper personality function even with -C panic=abort to
handle the following cases:

1) `extern "C-unwind"` still needs to catch foreign exceptions with -C
panic=abort to turn them into aborts. This requires landing pads and a
personality function.

2) ARM EHABI uses the personality function when creating backtraces.
The dummy personality function in panic_abort was causing backtrace
generation to get stuck in a loop since the personality function is
responsible for advancing the unwind state to the next frame.
2022-08-23 16:12:58 +08:00
Maybe Waffle
e4720e1cf2 Replace most uses of pointer::offset with add and sub 2022-08-21 02:21:41 +04:00
Yuki Okushi
e726af8dd4
Rollup merge of #95916 - solid-rs:feat-kmc-solid-abort, r=Mark-Simulacrum
kmc-solid: Use `libc::abort` to abort a program

This PR updates the target-specific abort subroutine for the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets.

The current implementation uses a `hlt` instruction, which is the most direct way to notify a connected debugger but is not the most flexible way. This PR changes it to call the `abort` libc function, making it possible for a system designer to override its behavior as they see fit.
2022-07-25 18:46:48 +09:00
Jack Huey
410dcc9674 Fully stabilize NLL 2022-06-03 17:16:41 -04:00
Gary Guo
68f063bf3f Use Rust ABI for __rust_start_panic and _{rdl,rg}_oom 2022-05-14 02:53:59 +01:00
Tomoaki Kawada
9d1f82ebfc kmc-solid: Use abort to abort a program
The current implementation uses a `hlt` instruction, which is the most
direct way to notify a connected debugger but is not the most flexible
way. This commit changes it to a call to the `abort` libc function,
making it possible for a system designer to override its behavior as
they see fit.
2022-04-11 11:10:00 +09:00
Ralf Jung
9c977530b5 fix some unused constant warning on some Windows targets 2022-04-08 08:36:56 -04:00
Deadbeef
06a1c14d52
Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00
Amanieu d'Antras
44a3a66ee8 Stabilize asm! and global_asm!
They are also removed from the prelude as per the decision in
https://github.com/rust-lang/rust/issues/87228.

stdarch and compiler-builtins are updated to work with the new, stable
asm! and global_asm! macros.
2021-12-12 11:20:03 +00:00
Alex Crichton
971638824f Use target_family = "wasm" 2021-11-10 08:35:42 -08:00
Alex Crichton
7f3ffbc8c2 std: Get the standard library compiling for wasm64
This commit goes through and updates various `#[cfg]` as appropriate to
get the wasm64-unknown-unknown target behaving similarly to the
wasm32-unknown-unknown target. Most of this is just updating various
conditions for `target_arch = "wasm32"` to also account for `target_arch
= "wasm64"` where appropriate. This commit also lists `wasm64` as an
allow-listed architecture to not have the `restricted_std` feature
enabled, enabling experimentation with `-Z build-std` externally.

The main goal of this commit is to enable playing around with
`wasm64-unknown-unknown` externally via `-Z build-std` in a way that's
similar to the `wasm32-unknown-unknown` target. These targets are
effectively the same and only differ in their pointer size, but wasm64
is much newer and has much less ecosystem/library support so it'll still
take time to get wasm64 fully-fledged.
2021-11-10 08:35:42 -08:00
Tomoaki Kawada
da9ca41c31 Add SOLID targets
SOLID[1] is an embedded development platform provided by Kyoto
Microcomputer Co., Ltd. This commit introduces a basic Tier 3 support
for SOLID.

# New Targets

The following targets are added:

 - `aarch64-kmc-solid_asp3`
 - `armv7a-kmc-solid_asp3-eabi`
 - `armv7a-kmc-solid_asp3-eabihf`

SOLID's target software system can be divided into two parts: an
RTOS kernel, which is responsible for threading and synchronization,
and Core Services, which provides filesystems, networking, and other
things. The RTOS kernel is a μITRON4.0[2][3]-derived kernel based on
the open-source TOPPERS RTOS kernels[4]. For uniprocessor systems
(more precisely, systems where only one processor core is allocated for
SOLID), this will be the TOPPERS/ASP3 kernel. As μITRON is
traditionally only specified at the source-code level, the ABI is
unique to each implementation, which is why `asp3` is included in the
target names.

More targets could be added later, as we support other base kernels
(there are at least three at the point of writing) and are interested
in supporting other processor architectures in the future.

# C Compiler

Although SOLID provides its own supported C/C++ build toolchain, GNU Arm
Embedded Toolchain seems to work for the purpose of building Rust.

# Unresolved Questions

A μITRON4 kernel can support `Thread::unpark` natively, but it's not
used by this commit's implementation because the underlying kernel
feature is also used to implement `Condvar`, and it's unclear whether
`std` should guarantee that parking tokens are not clobbered by other
synchronization primitives.

# Unsupported or Unimplemented Features

Most features are implemented. The following features are not
implemented due to the lack of native support:

- `fs::File::{file_attr, truncate, duplicate, set_permissions}`
- `fs::{symlink, link, canonicalize}`
- Process creation
- Command-line arguments

Backtrace generation is not really a good fit for embedded targets, so
it's intentionally left unimplemented. Unwinding is functional, however.

## Dynamic Linking

Dynamic linking is not supported. The target platform supports dynamic
linking, but enabling this in Rust causes several problems.

 - The linker invocation used to build the shared object of `std` is
   too long for the platform-provided linker to handle.

 - A linker script with specific requirements is required for the
   compiled shared object to be actually loadable.

As such, we decided to disable dynamic linking for now. Regardless, the
users can try to create shared objects by manually invoking the linker.

## Executable

Building an executable is not supported as the notion of "executable
files" isn't well-defined for these targets.

[1] https://solid.kmckk.com/SOLID/
[2] http://ertl.jp/ITRON/SPEC/mitron4-e.html
[3] https://en.wikipedia.org/wiki/ITRON_project
[4] https://toppers.jp/
2021-09-28 11:31:47 +09:00
hyd-dev
7520ea9046
Use C-unwind ABI for __rust_start_panic in panic_abort 2021-08-05 18:01:17 +08:00
bors
b53a93db2d Auto merge of #87535 - lf-:authors, r=Mark-Simulacrum
rfc3052 followup: Remove authors field from Cargo manifests

Since RFC 3052 soft deprecated the authors field, hiding it from
crates.io, docs.rs, and making Cargo not add it by default, and it is
not generally up to date/useful information for contributors, we may as well
remove it from crates in this repo.
2021-08-02 05:49:17 +00:00
Jade
3cf820e17d rfc3052: Remove authors field from Cargo manifests
Since RFC 3052 soft deprecated the authors field anyway, hiding it from
crates.io, docs.rs, and making Cargo not add it by default, and it is
not generally up to date/useful information, we should remove it from
crates in this repo.
2021-07-29 14:56:05 -07:00
Ali Malik
e43254aad1 Fix may not to appropriate might not or must not 2021-07-29 01:15:20 -04:00
Joshua Nelson
7411a9e7cc rustdoc: link to stable/beta docs consistently in documentation
## User-facing changes

- Intra-doc links to primitives that currently go to rust-lang.org/nightly/std/primitive.x.html will start going to channel that rustdoc was built with. Nightly will continue going to /nightly; Beta will link to /beta; stable compilers will link to /1.52.1 (or whatever version they were built as).
- Cross-crate links from std to core currently go to /nightly unconditionally. They will start going to /1.52.0 on stable channels (but remain the same on nightly channels).
- Intra-crate links from std to std (or core to core) currently go to the same URL they are hosted at; they will continue to do so. Notably, this is different from everything else because it can preserve the distinction between /stable and /1.52.0 by using relative links.

Note that "links" includes both intra-doc links and rustdoc's own
automatically generated hyperlinks.

 ## Implementation changes

- Update the testsuite to allow linking to /beta and /1.52.1 in docs
- Use an html_root_url for the standard library that's dependent on the channel

  This avoids linking to nightly docs on stable.

- Update rustdoc to use channel-dependent links for primitives from an
  unknown crate

- Set DOC_RUST_LANG_ORG_CHANNEL from bootstrap to ensure it's in sync
- Include doc.rust-lang.org in the channel
2021-06-04 14:18:21 -04:00
Thiébaud Weksteen
52ee9fbc02 android: set abort message
Android has the ability to supply an abort message [1]. This message is
automatically included in the debug trace, which helps debugging [2].
Modify panic_abort to populate this message before calling abort().

[1] https://android.googlesource.com/platform/bionic/+/master/libc/include/android/set_abort_message.h
[2] https://source.android.com/devices/tech/debug/native-crash
2021-04-09 15:33:43 +02:00
Charles E. Lehner
f45fe9493b
Add license metadata for std dependencies 2021-02-21 13:36:18 -05:00
Ralf Jung
29bed26036 slightly more typed interface to panic implementation 2020-12-21 13:37:59 +01:00
Lzu Tao
6bfe27a3e0 Drop support for cloudabi targets 2020-11-22 17:11:41 -05:00
Ralf Jung
bea0ae700e
Rollup merge of #76866 - est31:master, r=lcnr
Remove unused feature gates from library/ crates

Removes some unused feature gates from library crates. It's likely not a complete list as I only tested a subset for which it's more likely that it is unused.
2020-09-20 15:51:50 +02:00
Ralf Jung
0810c3ef19 support panic=abort in Miri 2020-09-18 13:15:54 +02:00
est31
baafc71f1f Remove unused libc feature gate
Libc isn't used by alloc.
And std and panic_* use libc from crates.io now,
which isn't feature gated.
2020-09-18 08:59:43 +02:00
Dylan DPC
96e0bc7b6b
Rollup merge of #75990 - rylev:arm-fastfail, r=alexcrichton
Add __fastfail for Windows on arm/aarch64

Fixes #73215
2020-08-30 01:43:54 +02:00
Ryan Levick
d931e97402 Explicitly look for 'thumb-mode' before using __fastfail on 'arm' 2020-08-29 12:30:49 +02:00
Ryan Levick
9e2228d2d0 Back to opcode for 32 bit ARM __fastfail 2020-08-28 17:40:56 +02:00
Ryan Levick
8bcc4d6178 Switch to asm! macro and use brk instruction on ARM 2020-08-28 11:22:21 +02:00
Amanieu d'Antras
239f833ed1 Abort when catch_unwind catches a foreign exception 2020-08-27 21:08:30 +01:00
Ryan Levick
970e7793bf Add __fastfail for Windows on arm/aarch64 2020-08-27 19:11:48 +02:00
Ryan Levick
6778baf516 Fix up docs 2020-08-10 17:39:06 +02:00
Ryan Levick
57572cf809 Call into fastfail on abort in libpanic_abort on Windows x86(_64) 2020-08-10 14:40:09 +02:00
mark
2c31b45ae8 mv std libs to library/ 2020-07-27 19:51:13 -05:00