Freestanding/bare-metal LoongArch64 binaries in ELF format: firmware, kernels, etc.
|loongarch64-unknown-none||LoongArch 64-bit, LP64D ABI (freestanding, hardfloat)|
|loongarch64-unknown-none-softfloat||LoongArch 64-bit, LP64S ABI (freestanding, softfloat)|
This target is cross-compiled. There is no support for
std. There is no
default allocator, but it's possible to use
alloc by supplying an allocator.
This allows the generated code to run in environments, such as kernels, which
may need to avoid the use of such registers or which may have special considerations
about the use of such registers (e.g. saving and restoring them to avoid breaking
userspace code using the same registers). You can change code generation to use
additional CPU features via the
-C target-feature= codegen options to rustc, or
#[target_feature] mechanism within Rust code.
By default, code generated with this target should run on any
hardware; enabling additional target features may raise this baseline.
Code generated with this target will use the
small code model by default.
You can change this using the
-C code-model= option to rustc.
extern "C" uses the standard calling
This target generates binaries in the ELF format. Any alternate formats or special considerations for binary layout will require linker options or linker scripts.
You can build Rust with support for the target by adding it to the
[build] build-stage = 1 target = ["loongarch64-unknown-none"]
# target flag may be used with any cargo or rustc command cargo build --target loongarch64-unknown-none
loongarch64-unknown-none* supports a variety of different environments and does
std, this target does not support running the Rust test suite.
If you want to compile C code along with Rust (such as for Rust crates with C
dependencies), you will need an appropriate
Rust may be able to use an
loongarch64-unknown-linux-gnu- toolchain with
appropriate standalone flags to build for this toolchain (depending on the assumptions
of that toolchain, see below), or you may wish to use a separate
loongarch hosts that use ELF binaries, you may be able to use the host
C toolchain, if it does not introduce assumptions about the host environment
that don't match the expectations of a standalone environment. Otherwise, you
may need a separate toolchain for standalone/freestanding development, just as
when cross-compiling from a non-