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LoongArch: rust: Switch to use built-in rustc target

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This commit switches to use the LoongArch's built-in rustc target
'loongarch64-unknown-none-softfloat'. The Rust samples have been tested.

Acked-by: Miguel Ojeda <ojeda@kernel.org>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
WANG Rui 2024-05-14 12:24:18 +08:00 committed by Huacai Chen
parent d6af2c7639
commit 8f8d74ee11
4 changed files with 4 additions and 9 deletions
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2
arch/loongarch/Makefile
View file

@ -101,7 +101,7 @@ ifdef CONFIG_OBJTOOL
KBUILD_CFLAGS += -fno-jump-tables
endif
KBUILD_RUSTFLAGS += --target=$(objtree)/scripts/target.json
KBUILD_RUSTFLAGS += --target=loongarch64-unknown-none-softfloat
KBUILD_RUSTFLAGS_MODULE += -Crelocation-model=pic
ifeq ($(CONFIG_RELOCATABLE),y)

2
rust/Makefile
View file

@ -436,7 +436,7 @@ $(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--re
$(obj)/core.o: private rustc_target_flags = $(core-cfgs)
$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs FORCE
+$(call if_changed_dep,rustc_library)
ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),)
ifdef CONFIG_X86_64
$(obj)/core.o: scripts/target.json
endif

2
scripts/Makefile
View file

@ -12,7 +12,7 @@ hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_builder
hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_gen
ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),)
ifdef CONFIG_X86_64
always-$(CONFIG_RUST) += target.json
filechk_rust_target = $< < include/config/auto.conf

7
scripts/generate_rust_target.rs
View file

@ -164,12 +164,7 @@ fn main() {
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");
panic!("loongarch uses the builtin rustc loongarch64-unknown-none-softfloat target");
} else {
panic!("Unsupported architecture");
}