Add initial Rust support for LoongArch.
Signed-off-by: WANG Rui <wangrui@xxxxxxxxxxx>
---
Documentation/rust/arch-support.rst | 1 +
arch/loongarch/Kconfig | 1 +
arch/loongarch/Makefile | 3 +++
scripts/generate_rust_target.rs | 10 ++++++++++
4 files changed, 15 insertions(+)
diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst
index b91e9ef4d0c2..e89c8b2efbff 100644
--- a/Documentation/rust/arch-support.rst
+++ b/Documentation/rust/arch-support.rst
@@ -15,6 +15,7 @@ support corresponds to ``S`` values in the ``MAINTAINERS`` file.
============ ================ ==============================================
Architecture Level of support Constraints
============ ================ ==============================================
+``loongarch`` Maintained
``um`` Maintained ``x86_64`` only.
``x86`` Maintained ``x86_64`` only.
============ ================ ==============================================
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 15d05dd2b7f3..6d39ec3077da 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -142,6 +142,7 @@ config LOONGARCH
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RETHOOK
select HAVE_RSEQ
+ select HAVE_RUST
select HAVE_SAMPLE_FTRACE_DIRECT
select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
select HAVE_SETUP_PER_CPU_AREA if NUMA
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index 4ba8d67ddb09..ba45cb7b621c 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -81,8 +81,11 @@ KBUILD_AFLAGS_MODULE += -Wa,-mla-global-with-abs
KBUILD_CFLAGS_MODULE += -fplt -Wa,-mla-global-with-abs,-mla-local-with-abs
endif
+KBUILD_RUSTFLAGS_MODULE += -Crelocation-model=pic
+
ifeq ($(CONFIG_RELOCATABLE),y)
KBUILD_CFLAGS_KERNEL += -fPIE
+KBUILD_RUSTFLAGS_KERNEL += -Crelocation-model=pie
LDFLAGS_vmlinux += -static -pie --no-dynamic-linker -z notext $(call ld-option, --apply-dynamic-relocs)
endif
diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs
index 3c6cbe2b278d..3edda6a10dd0 100644
--- a/scripts/generate_rust_target.rs
+++ b/scripts/generate_rust_target.rs
@@ -161,6 +161,16 @@ fn main() {
ts.push("features", features);
ts.push("llvm-target", "x86_64-linux-gnu");
ts.push("target-pointer-width", "64");
+ } else if cfg.has("LOONGARCH") {
+ ts.push("arch", "loongarch64");
+ ts.push(
+ "data-layout",
+ "e-m:e-p:64:64-i64:64-i128:128-n64-S128",
+ );
+ ts.push("features", "-f,-d");
+ ts.push("llvm-target", "loongarch64-linux-gnusf");
+ ts.push("llvm-abiname", "lp64s");
+ ts.push("target-pointer-width", "64");
} else {
panic!("Unsupported architecture");
}
--
2.43.0
