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2025-07-31Use `core` via `rustc-std-workspace-core` in `library/panic*`Trevor Gross-2/+1
The three panic-related library crates need to have access to `core`, and `compiler-builtins` needs to be in the crate graph. Rather than specifying both dependencies, switch these crates to use `rustc-std-workspace-core` which already does this. This means there is now a single place that the `compiler-builtins` dependency needs to get configured, for everything other than `alloc` and `std`.
2025-06-08Use the in-tree `compiler-builtins`Trevor Gross-1/+1
Many of `std`'s dependency have a dependency on the crates.io `compiler-builtins` when used with the feature `rustc-std-workspace-core`. Use a Cargo patch to select the in-tree version instead. `compiler-builtins` is also added as a dependency of `rustc-std-workspace-core` so these crates can remove their crates.io dependency in the future.
2025-05-15deduplicate abort implementationsjoboet-74/+9
Currently, the code for process aborts is duplicated across `panic_abort` and `std`. This PR uses `#[rustc_std_internal_symbol]` to make the `std` implementation available to `panic_abort` via the linker, thereby deduplicating the code.
2025-03-11Migrate panic_abort to Rust 2024Eric Huss-1/+1
2025-02-14panic_abort: Apply unsafe_op_in_unsafe_fnEric Huss-18/+35
2025-02-09Mark extern blocks as unsafeMichael Goulet-3/+3
2024-07-28step cfg(bootstrap)Mark Rousskov-1/+0
2024-06-19Stabilise c_unwindGary Guo-1/+1
2024-04-15Add support for Arm64EC to the Standard LibraryDaniel Paoliello-1/+2
2024-04-14Replace libc::c_int with core::ffi::c_intChris Denton-1/+3
And remove the libc crate when it isn't needed
2024-03-02Cleanup windows abort_internalChris Denton-4/+3
2024-01-22rustc: implement support for `riscv32im_risc0_zkvm_elf`Erik Kaneda-0/+29
This also adds changes in the rust test suite in order to get a few of them to pass. Co-authored-by: Frank Laub <flaub@risc0.com> Co-authored-by: Urgau <3616612+Urgau@users.noreply.github.com>
2023-12-07add teeos std impl袁浩-0/+10
Signed-off-by: 袁浩 <yuanhao34@huawei.com>
2023-09-22Rebase to masterAyush Singh-1/+1
- Update Example - Add thread_parking to sys::uefi - Fix unsafe in unsafe errors - Improve docs - Improve os/exit - Some asserts - Switch back to atomics Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>
2023-09-22Add Minimal Std implementation for UEFIAyush Singh-0/+1
Implemented modules: 1. alloc 2. os_str 3. env 4. math Tracking Issue: https://github.com/rust-lang/rust/issues/100499 API Change Proposal: https://github.com/rust-lang/libs-team/issues/87 This was originally part of https://github.com/rust-lang/rust/pull/100316. Since that PR was becoming too unwieldy and cluttered, and with suggestion from @dvdhrm, I have extracted a minimal std implementation to this PR. Signed-off-by: Ayush Singh <ayushsingh1325@gmail.com>
2023-09-20Rename BoxMeUp to PanicPayload.Mara Bos-4/+4
2023-09-19Auto merge of #104101 - betrusted-io:xous-libstd-initial, r=bjorn3bors-1/+2
Add initial libstd support for Xous This patchset adds some minimal support to the tier-3 target `riscv32imac-unknown-xous-elf`. The following features are supported: * alloc * thread creation and joining * thread sleeping * thread_local * panic_abort * mutex * condvar * stdout Additionally, internal support for the various Xous primitives surrounding IPC have been added as part of the Xous FFI. These may be exposed as part of `std::os::xous::ffi` in the future, however for now they are not public. This represents the minimum viable product. A future patchset will add support for networking and filesystem support.
2023-08-23Bump cfg(bootstrap)Mark Rousskov-1/+1
2023-08-22panic_abort: call __rust_abort on xousSean Cross-1/+2
Xous does not properly handle invalid instructions. Instead, call `__rust_abort` and exit normally. Signed-off-by: Sean Cross <sean@xobs.io>
2023-08-03Add `internal_features` lintNilstrieb-0/+1
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^^
2023-03-26Remove unnecessary raw pointer in __rust_start_panic argbjorn3-3/+3
It is no longer necessary as __rust_start_panic switched to the Rust abi.
2022-12-30Replace libstd, libcore, liballoc in line comments.jonathanCogan-3/+3
2022-11-02Remove std's transitive dependency on cfg-if 0.1Collin Baker-1/+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
2022-08-23Update comment about personalities in panic_abortAmanieu d'Antras-1/+5
2022-08-23Remove custom frame info registration on i686-pc-windows-gnuAmanieu d'Antras-9/+0
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.
2022-08-23Move personality functions to stdAmanieu d'Antras-20/+0
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.
2022-08-21Replace most uses of `pointer::offset` with `add` and `sub`Maybe Waffle-1/+1
2022-07-25Rollup merge of #95916 - solid-rs:feat-kmc-solid-abort, r=Mark-SimulacrumYuki Okushi-2/+1
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.
2022-06-03Fully stabilize NLLJack Huey-1/+0
2022-05-14Use Rust ABI for `__rust_start_panic` and `_{rdl,rg}_oom`Gary Guo-1/+1
2022-04-11kmc-solid: Use `abort` to abort a programTomoaki Kawada-2/+1
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.
2022-04-08fix some unused constant warning on some Windows targetsRalf Jung-0/+1
2021-12-23Switch all libraries to the 2021 editionDeadbeef-1/+1
2021-12-12Stabilize asm! and global_asm!Amanieu d'Antras-4/+3
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.
2021-11-10Use `target_family = "wasm"`Alex Crichton-2/+1
2021-11-10std: Get the standard library compiling for wasm64Alex Crichton-1/+2
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.
2021-09-28Add SOLID targetsTomoaki Kawada-0/+1
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/
2021-08-05Use `C-unwind` ABI for `__rust_start_panic` in `panic_abort`hyd-dev-1/+2
2021-08-02Auto merge of #87535 - lf-:authors, r=Mark-Simulacrumbors-1/+0
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.
2021-07-29rfc3052: Remove authors field from Cargo manifestsJade-1/+0
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.
2021-07-29Fix may not to appropriate might not or must notAli Malik-1/+1
2021-06-04rustdoc: link to stable/beta docs consistently in documentationJoshua Nelson-4/+1
## 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
2021-04-09android: set abort messageThiébaud Weksteen-0/+57
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
2021-02-21Add license metadata for std dependenciesCharles E. Lehner-0/+3
2020-12-21slightly more typed interface to panic implementationRalf Jung-1/+3
2020-11-22Drop support for cloudabi targetsLzu Tao-1/+1
2020-09-20Rollup merge of #76866 - est31:master, r=lcnrRalf Jung-1/+0
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.
2020-09-18support panic=abort in MiriRalf Jung-1/+1
2020-09-18Remove unused libc feature gateest31-1/+0
Libc isn't used by alloc. And std and panic_* use libc from crates.io now, which isn't feature gated.
2020-08-30Rollup merge of #75990 - rylev:arm-fastfail, r=alexcrichtonDylan DPC-3/+14
Add __fastfail for Windows on arm/aarch64 Fixes #73215
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