add bare metal ARM Cortex-A targets to rustc by japaric · Pull Request #68253 · rust-lang/rust

japaric · 2020-01-15T17:10:51Z

-> rustc --target armv7a-none-eabi will work

also build rust-std (rustup) components for them

-> rustup target add armv7a-none-eabi will work

this completes our bare-metal support of ARMv7 cores on stable Rust (by 1.42 or 1.43)

(these target specifications have been tested on a real (no emulation / QEMU) Cortex-A7 core)

-> `rustc --target armv7-none-eabi` will work also build rust-std (rustup) components for them -> `rustup target add armv7-none-eabi` will work

rust-highfive · 2020-01-15T17:10:56Z

r? @zackmdavis

(rust_highfive has picked a reviewer for you, use r? to override)

jonas-schievink · 2020-01-15T17:14:59Z

r? @alexcrichton

alexcrichton · 2020-01-15T17:55:13Z

@bors: r+

🎉

bors · 2020-01-15T17:55:15Z

📌 Commit 470cdf5 has been approved by alexcrichton

bors · 2020-01-18T11:49:47Z

☔ The latest upstream changes (presumably #68037) made this pull request unmergeable. Please resolve the merge conflicts.

japaric · 2020-01-20T07:51:39Z

Fixed merge conflict

@bors r=alexcrichton

bors · 2020-01-20T07:51:41Z

📌 Commit a3a0776 has been approved by alexcrichton

bors · 2020-01-20T09:15:19Z

⌛ Testing commit a3a0776 with merge 6eb8ee8...

AArch64 bare-metal targets: Build rust-std This PR complements rust-lang#68253

it needs some upstream changes in the build script of the compiler-builtins crate

japaric · 2020-01-21T16:20:10Z

Last commit should fix the compiler-builtins build for armv7a-none-eabi.

Fixing the build of that crate on armv7a-none-eabihf is going to require changes in the compiler-builtins crate's build script so I'm going to leave the rust-std build for that target out until that gets addressed upstream.

bors r=alexcrichton

japaric · 2020-01-21T16:20:27Z

err,

@bors r=alexcrichton

bors · 2020-01-21T16:20:28Z

📌 Commit 8abbd0b has been approved by alexcrichton

…crichton add bare metal ARM Cortex-A targets to rustc -> `rustc --target armv7a-none-eabi` will work also build rust-std (rustup) components for them -> `rustup target add armv7a-none-eabi` will work this completes our bare-metal support of ARMv7 cores on stable Rust (by 1.42 or 1.43) (these target specifications have been tested on a real (no emulation / QEMU) [Cortex-A7 core](https://github.com/iqlusioninc/usbarmory.rs/))

@ghost

Rollup of 10 pull requests Successful merges: - #67195 ([experiment] Add `-Z no-link` flag) - #68253 (add bare metal ARM Cortex-A targets to rustc) - #68361 (Unbreak linking with lld 9 on FreeBSD 13.0-CURRENT i386) - #68388 (Make `TooGeneric` error in WF checking a proper error) - #68409 (Micro-optimize OutputFilenames) - #68410 (Export weak symbols used by MemorySanitizer) - #68425 (Fix try-op diagnostic in E0277 for methods) - #68440 (bootstrap: update clippy subcmd decription) - #68441 (pprust: use as_deref) - #68462 (librustc_mir: don't allocate vectors where slices will do.) Failed merges: r? @ghost

Version 1.42.0 (2020-03-12) ========================== Language -------- - [You can now use the slice pattern syntax with subslices.][67712] e.g. ```rust fn foo(words: &[&str]) { match words { ["Hello", "World", "!", ..] => println!("Hello World!"), ["Foo", "Bar", ..] => println!("Baz"), rest => println!("{:?}", rest), } } ``` - [You can now use `#[repr(transparent)]` on univariant `enum`s.][68122] Meaning that you can create an enum that has the exact layout and ABI of the type it contains. - [There are some *syntax-only* changes:][67131] - `default` is syntactically allowed before items in `trait` definitions. - Items in `impl`s (i.e. `const`s, `type`s, and `fn`s) may syntactically leave out their bodies in favor of `;`. - Bounds on associated types in `impl`s are now syntactically allowed (e.g. `type Foo: Ord;`). - `...` (the C-variadic type) may occur syntactically directly as the type of any function parameter. These are still rejected *semantically*, so you will likely receive an error but these changes can be seen and parsed by procedural macros and conditional compilation. Compiler -------- - [Added tier 2* support for `armv7a-none-eabi`.][68253] - [Added tier 2 support for `riscv64gc-unknown-linux-gnu`.][68339] - [`Option::{expect,unwrap}` and `Result::{expect, expect_err, unwrap, unwrap_err}` now produce panic messages pointing to the location where they were called, rather than `core`'s internals. ][67887] * Refer to Rust's [platform support page][forge-platform-support] for more information on Rust's tiered platform support. Libraries --------- - [`iter::Empty<T>` now implements `Send` and `Sync` for any `T`.][68348] - [`Pin::{map_unchecked, map_unchecked_mut}` no longer require the return type to implement `Sized`.][67935] - [`io::Cursor` now derives `PartialEq` and `Eq`.][67233] - [`Layout::new` is now `const`.][66254] - [Added Standard Library support for `riscv64gc-unknown-linux-gnu`.][66899] Stabilized APIs --------------- - [`CondVar::wait_while`] - [`CondVar::wait_timeout_while`] - [`DebugMap::key`] - [`DebugMap::value`] - [`ManuallyDrop::take`] - [`matches!`] - [`ptr::slice_from_raw_parts_mut`] - [`ptr::slice_from_raw_parts`] Cargo ----- - [You no longer need to include `extern crate proc_macro;` to be able to `use proc_macro;` in the `2018` edition.][cargo/7700] Compatibility Notes ------------------- - [`Error::description` has been deprecated, and its use will now produce a warning.][66919] It's recommended to use `Display`/`to_string` instead. - [`use $crate;` inside macros is now a hard error.][37390] The compiler emitted forward compatibility warnings since Rust 1.14.0. - [As previously announced, this release reduces the level of support for 32-bit Apple targets to tier 3.][apple-32bit-drop]. This means that the source code is still available to build, but the targets are no longer tested and no release binary is distributed by the Rust project. Please refer to the linked blog post for more information. [37390]: rust-lang/rust#37390 [68253]: rust-lang/rust#68253 [68348]: rust-lang/rust#68348 [67935]: rust-lang/rust#67935 [68339]: rust-lang/rust#68339 [68122]: rust-lang/rust#68122 [67712]: rust-lang/rust#67712 [67887]: rust-lang/rust#67887 [67131]: rust-lang/rust#67131 [67233]: rust-lang/rust#67233 [66899]: rust-lang/rust#66899 [66919]: rust-lang/rust#66919 [66254]: rust-lang/rust#66254 [cargo/7700]: rust-lang/cargo#7700 [`DebugMap::key`]: https://doc.rust-lang.org/stable/std/fmt/struct.DebugMap.html#method.key [`DebugMap::value`]: https://doc.rust-lang.org/stable/std/fmt/struct.DebugMap.html#method.value [`ManuallyDrop::take`]: https://doc.rust-lang.org/stable/std/mem/struct.ManuallyDrop.html#method.take [`matches!`]: https://doc.rust-lang.org/stable/std/macro.matches.html [`ptr::slice_from_raw_parts_mut`]: https://doc.rust-lang.org/stable/std/ptr/fn.slice_from_raw_parts_mut.html [`ptr::slice_from_raw_parts`]: https://doc.rust-lang.org/stable/std/ptr/fn.slice_from_raw_parts.html [`CondVar::wait_while`]: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html#method.wait_while [`CondVar::wait_timeout_while`]: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html#method.wait_timeout_while

AArch64 bare-metal targets: Build rust-std This PR complements rust-lang#68253

- aarch64-unknown-none: rust-lang/rust#68334 - aarch64-unknown-none-softfloat: rust-lang/rust#64589 - armv7-unknown-linux-gnueabi: rust-lang/rust#63107 - armv7-unknown-linux-musleabi: rust-lang/rust#63107 - aarch64-apple-tvos: rust-lang/rust#68191 - armv7a-none-eabihf: rust-lang/rust#68253 - i686-unknown-uefi: rust-lang/rust#64334 - thumbv7neon-unknown-linux-musleabihf: rust-lang/rust#66103 - x86_64-apple-ios-macabi: rust-lang/rust#63467 - x86_64-apple-tvos: rust-lang/rust#68191 - x86_64-linux-kernel: rust-lang/rust#64051 - x86_64-unknown-hermit-kernel: rust-lang/rust#66713 - x86_64-unknown-illumos: rust-lang/rust#71145 Moved to tier 2: - aarch64-unknown-none: rust-lang/rust#68334

Version 1.42.0 (2020-03-12) ========================== Language -------- - [You can now use the slice pattern syntax with subslices.][67712] e.g. ```rust fn foo(words: &[&str]) { match words { ["Hello", "World", "!", ..] => println!("Hello World!"), ["Foo", "Bar", ..] => println!("Baz"), rest => println!("{:?}", rest), } } ``` - [You can now use `#[repr(transparent)]` on univariant `enum`s.][68122] Meaning that you can create an enum that has the exact layout and ABI of the type it contains. - [There are some *syntax-only* changes:][67131] - `default` is syntactically allowed before items in `trait` definitions. - Items in `impl`s (i.e. `const`s, `type`s, and `fn`s) may syntactically leave out their bodies in favor of `;`. - Bounds on associated types in `impl`s are now syntactically allowed (e.g. `type Foo: Ord;`). - `...` (the C-variadic type) may occur syntactically directly as the type of any function parameter. These are still rejected *semantically*, so you will likely receive an error but these changes can be seen and parsed by procedural macros and conditional compilation. Compiler -------- - [Added tier 2* support for `armv7a-none-eabi`.][68253] - [Added tier 2 support for `riscv64gc-unknown-linux-gnu`.][68339] - [`Option::{expect,unwrap}` and `Result::{expect, expect_err, unwrap, unwrap_err}` now produce panic messages pointing to the location where they were called, rather than `core`'s internals. ][67887] * Refer to Rust's [platform support page][forge-platform-support] for more information on Rust's tiered platform support. Libraries --------- - [`iter::Empty<T>` now implements `Send` and `Sync` for any `T`.][68348] - [`Pin::{map_unchecked, map_unchecked_mut}` no longer require the return type to implement `Sized`.][67935] - [`io::Cursor` now derives `PartialEq` and `Eq`.][67233] - [`Layout::new` is now `const`.][66254] - [Added Standard Library support for `riscv64gc-unknown-linux-gnu`.][66899] Stabilized APIs --------------- - [`CondVar::wait_while`] - [`CondVar::wait_timeout_while`] - [`DebugMap::key`] - [`DebugMap::value`] - [`ManuallyDrop::take`] - [`matches!`] - [`ptr::slice_from_raw_parts_mut`] - [`ptr::slice_from_raw_parts`] Cargo ----- - [You no longer need to include `extern crate proc_macro;` to be able to `use proc_macro;` in the `2018` edition.][cargo/7700] Compatibility Notes ------------------- - [`Error::description` has been deprecated, and its use will now produce a warning.][66919] It's recommended to use `Display`/`to_string` instead. - [`use $crate;` inside macros is now a hard error.][37390] The compiler emitted forward compatibility warnings since Rust 1.14.0. - [As previously announced, this release reduces the level of support for 32-bit Apple targets to tier 3.][apple-32bit-drop]. This means that the source code is still available to build, but the targets are no longer tested and no release binary is distributed by the Rust project. Please refer to the linked blog post for more information. [37390]: rust-lang/rust#37390 [68253]: rust-lang/rust#68253 [68348]: rust-lang/rust#68348 [67935]: rust-lang/rust#67935 [68339]: rust-lang/rust#68339 [68122]: rust-lang/rust#68122 [67712]: rust-lang/rust#67712 [67887]: rust-lang/rust#67887 [67131]: rust-lang/rust#67131 [67233]: rust-lang/rust#67233 [66899]: rust-lang/rust#66899 [66919]: rust-lang/rust#66919 [66254]: rust-lang/rust#66254 [cargo/7700]: rust-lang/cargo#7700 [`DebugMap::key`]: https://doc.rust-lang.org/stable/std/fmt/struct.DebugMap.html#method.key [`DebugMap::value`]: https://doc.rust-lang.org/stable/std/fmt/struct.DebugMap.html#method.value [`ManuallyDrop::take`]: https://doc.rust-lang.org/stable/std/mem/struct.ManuallyDrop.html#method.take [`matches!`]: https://doc.rust-lang.org/stable/std/macro.matches.html [`ptr::slice_from_raw_parts_mut`]: https://doc.rust-lang.org/stable/std/ptr/fn.slice_from_raw_parts_mut.html [`ptr::slice_from_raw_parts`]: https://doc.rust-lang.org/stable/std/ptr/fn.slice_from_raw_parts.html [`CondVar::wait_while`]: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html#method.wait_while [`CondVar::wait_timeout_while`]: https://doc.rust-lang.org/stable/std/sync/struct.Condvar.html#method.wait_timeout_while

add bare metal ARM Cortex-A targets to rustc
470cdf5
-> `rustc --target armv7-none-eabi` will work also build rust-std (rustup) components for them -> `rustup target add armv7-none-eabi` will work

rust-highfive assigned zackmdavis Jan 15, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jan 15, 2020

japaric mentioned this pull request Jan 15, 2020
drop cargo-xbuild build dependency iqlusioninc/usbarmory.rs#4
Closed

rust-highfive assigned alexcrichton and unassigned zackmdavis Jan 15, 2020

jonas-schievink added O-Arm Target: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state relnotes Marks issues that should be documented in the release notes of the next release. WG-embedded Working group: Embedded systems labels Jan 15, 2020

jonas-schievink added this to the 1.42 milestone Jan 15, 2020

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 15, 2020

Centril added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. and removed O-Arm Target: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state WG-embedded Working group: Embedded systems labels Jan 16, 2020

This was referenced Jan 18, 2020
Cortex A7 support? rust-embedded/cortex-a#11
Closed
AArch64 bare-metal targets: Build rust-std #68334
Merged

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jan 18, 2020

Merge branch 'master' into bare-metal-cortex-a
a3a0776

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jan 20, 2020

Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Jan 20, 2020
Rollup merge ofrust-lang#68334- andre-richter:master, r=japaric
da8e5aa
AArch64 bare-metal targets: Build rust-std This PR complements rust-lang#68253

for now, do not build rust-std for the armv7a-none-eabihf target
8abbd0b
it needs some upstream changes in the build script of the compiler-builtins crate

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 21, 2020

Centril mentioned this pull request Jan 21, 2020
Rollup of 4 pull requests #68432
Closed

tmandry mentioned this pull request Jan 22, 2020
Rollup of 8 pull requests #68446
Closed

tmandry mentioned this pull request Jan 22, 2020
Rollup of 8 pull requests #68450
Closed

tmandry mentioned this pull request Jan 22, 2020
Rollup of 11 pull requests #68470
Closed

tmandry mentioned this pull request Jan 23, 2020
Rollup of 10 pull requests #68474
Merged

bors merged commit 8abbd0b into rust-lang:masterJan 23, 2020

Centril added a commit to Centril/rust that referenced this pull request Apr 3, 2020
Rollup merge ofrust-lang#68334- andre-richter:master, r=japaric
73f0cf6
AArch64 bare-metal targets: Build rust-std This PR complements rust-lang#68253

ehuss mentioned this pull request May 15, 2020
Update platform tiers. rust-lang/rust-forge#356
Merged

davidtwco mentioned this pull request Sep 20, 2023
target tier policy compliance #116004
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add bare metal ARM Cortex-A targets to rustc - #68253

add bare metal ARM Cortex-A targets to rustc#68253
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