rust/compiler/rustc_llvm/llvm-wrapper
Miguel Ojeda 2d476222e8 Add -Zfunction-return={keep,thunk-extern} option
This is intended to be used for Linux kernel RETHUNK builds.

With this commit (optionally backported to Rust 1.73.0), plus a
patched Linux kernel to pass the flag, I get a RETHUNK build with
Rust enabled that is `objtool`-warning-free and is able to boot in
QEMU and load a sample Rust kernel module.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2023-11-30 20:21:31 +01:00
..
.editorconfig Move rustllvm into rustc_llvm 2020-09-09 23:05:43 +03:00
ArchiveWrapper.cpp ArchiveWrapper: handle LLVM API update 2023-08-22 12:26:35 -04:00
CoverageMappingWrapper.cpp coverage: Don't convert symbol names to CString for FFI 2023-08-04 10:48:05 +10:00
Linker.cpp Move rustllvm into rustc_llvm 2020-09-09 23:05:43 +03:00
LLVMWrapper.h Add -Zfunction-return={keep,thunk-extern} option 2023-11-30 20:21:31 +01:00
PassWrapper.cpp Auto merge of #117947 - Dirbaio:drop-llvm-15, r=cuviper 2023-11-27 21:54:03 +00:00
README Move rustllvm into rustc_llvm 2020-09-09 23:05:43 +03:00
RustWrapper.cpp Add -Zfunction-return={keep,thunk-extern} option 2023-11-30 20:21:31 +01:00
SymbolWrapper.cpp llvm-wrapper: update for LLVM API change 2023-07-14 12:10:29 +00:00

This directory currently contains some LLVM support code. This will generally
be sent upstream to LLVM in time; for now it lives here.

NOTE: the LLVM C++ ABI is subject to between-version breakage and must *never*
be exposed to Rust. To allow for easy auditing of that, all Rust-exposed types
must be typedef-ed as "LLVMXyz", or "LLVMRustXyz" if they were defined here.

Functions that return a failure status and leave the error in
the LLVM last error should return an LLVMRustResult rather than an
int or anything to avoid confusion.

When translating enums, add a single `Other` variant as the first
one to allow for new variants to be added. It should abort when used
as an input.

All other types must not be typedef-ed as such.