b91a3a0560
Basic inline assembly support for SPARC and SPARC64
This implements asm_experimental_arch (tracking issue https://github.com/rust-lang/rust/issues/93335) for SPARC and SPARC64.
This PR includes:
- General-purpose registers `r[0-31]` (`reg` register class, LLVM/GCC constraint `r`)
Supported types: i8, i16, i32, i64 (SPARC64-only)
Aliases: `g[0-7]` (`r[0-7]`), `o[0-7]` (`r[8-15]`), `l[0-7]` (`r[16-23]`), `i[0-7]` (`r[24-31]`)
- `y` register (clobber-only, needed for clobber_abi)
- preserves_flags: Integer condition codes (`icc`, `xcc`) and floating-point condition codes (`fcc*`)
The following are *not* included:
- 64-bit integer support on SPARC-V8+'s global or out registers (`g[0-7]`, `o[0-7]`): GCC's `h` constraint (it seems that there is no corresponding constraint in LLVM?)
- Floating-point registers (LLVM/GCC constraint `e`/`f`):
I initially tried to implement this, but postponed it for now because there seemed to be several parts in LLVM that behaved differently than in the LangRef's description.
- clobber_abi: Support for floating-point registers is needed.
Refs:
- LLVM
- Reserved registers https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Sparc/SparcRegisterInfo.cpp#L52
- Register definitions https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Sparc/SparcRegisterInfo.td
- Supported constraints https://llvm.org/docs/LangRef.html#supported-constraint-code-list
- GCC
- Reserved registers
|
||
|---|---|---|
| .github | ||
| compiler | ||
| library | ||
| LICENSES | ||
| src | ||
| tests | ||
| .clang-format | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .ignore | ||
| .mailmap | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| config.example.toml | ||
| configure | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| INSTALL.md | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| README.md | ||
| RELEASES.md | ||
| REUSE.toml | ||
| rust-bors.toml | ||
| rustfmt.toml | ||
| triagebot.toml | ||
| x | ||
| x.ps1 | ||
| x.py | ||
This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
-
Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.
-
Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
-
Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
See https://www.rust-lang.org/community for a list of chat platforms and forums.
Contributing
See CONTRIBUTING.md.
License
Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
Trademark
The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").
If you want to use these names or brands, please read the media guide.
Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.