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-rw-r--r--rust/Makefile42
1 files changed, 23 insertions, 19 deletions
diff --git a/rust/Makefile b/rust/Makefile
index ff70c4c916f8..f88d108fbef0 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -1,8 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-always-$(CONFIG_RUST) += target.json
-no-clean-files += target.json
-
obj-$(CONFIG_RUST) += core.o compiler_builtins.o
always-$(CONFIG_RUST) += exports_core_generated.h
@@ -50,6 +47,7 @@ core-cfgs = \
--cfg no_fp_fmt_parse
alloc-cfgs = \
+ --cfg no_borrow \
--cfg no_fmt \
--cfg no_global_oom_handling \
--cfg no_macros \
@@ -231,11 +229,6 @@ rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \
$(call if_changed,rustc_test)
$(call if_changed,rustc_test_library)
-filechk_rust_target = $(objtree)/scripts/generate_rust_target < $<
-
-$(obj)/target.json: $(objtree)/include/config/auto.conf FORCE
- $(call filechk,rust_target)
-
ifdef CONFIG_CC_IS_CLANG
bindgen_c_flags = $(c_flags)
else
@@ -331,11 +324,9 @@ $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE
quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@
cmd_rustc_procmacro = \
$(RUSTC_OR_CLIPPY) $(rust_common_flags) \
- --emit=dep-info,link --extern proc_macro \
- --crate-type proc-macro --out-dir $(objtree)/$(obj) \
- --crate-name $(patsubst lib%.so,%,$(notdir $@)) $<; \
- mv $(objtree)/$(obj)/$(patsubst lib%.so,%,$(notdir $@)).d $(depfile); \
- sed -i '/^\#/d' $(depfile)
+ --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \
+ --crate-type proc-macro \
+ --crate-name $(patsubst lib%.so,%,$(notdir $@)) $<
# Procedural macros can only be used with the `rustc` that compiled it.
# Therefore, to get `libmacros.so` automatically recompiled when the compiler
@@ -348,21 +339,34 @@ quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L
OBJTREE=$(abspath $(objtree)) \
$(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \
$(filter-out $(skip_flags),$(rust_flags) $(rustc_target_flags)) \
- --emit=dep-info,obj,metadata --crate-type rlib \
- --out-dir $(objtree)/$(obj) -L$(objtree)/$(obj) \
- --crate-name $(patsubst %.o,%,$(notdir $@)) $<; \
- mv $(objtree)/$(obj)/$(patsubst %.o,%,$(notdir $@)).d $(depfile); \
- sed -i '/^\#/d' $(depfile) \
+ --emit=dep-info=$(depfile) --emit=obj=$@ \
+ --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \
+ --crate-type rlib -L$(objtree)/$(obj) \
+ --crate-name $(patsubst %.o,%,$(notdir $@)) $< \
$(if $(rustc_objcopy),;$(OBJCOPY) $(rustc_objcopy) $@)
rust-analyzer:
$(Q)$(srctree)/scripts/generate_rust_analyzer.py $(srctree) $(objtree) \
$(RUST_LIB_SRC) > $(objtree)/rust-project.json
+redirect-intrinsics = \
+ __eqsf2 __gesf2 __lesf2 __nesf2 __unordsf2 \
+ __unorddf2 \
+ __muloti4 __multi3 \
+ __udivmodti4 __udivti3 __umodti3
+
+ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),)
+ # These intrinsics are defined for ARM64 and RISCV64
+ redirect-intrinsics += \
+ __ashrti3 \
+ __ashlti3 __lshrti3
+endif
+
$(obj)/core.o: private skip_clippy = 1
$(obj)/core.o: private skip_flags = -Dunreachable_pub
+$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym))
$(obj)/core.o: private rustc_target_flags = $(core-cfgs)
-$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs $(obj)/target.json FORCE
+$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs scripts/target.json FORCE
$(call if_changed_dep,rustc_library)
$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*'