mirror of
https://github.com/torvalds/linux.git
synced 2024-09-20 15:03:04 +00:00
ab0f4cedc3
At present, Rust in the kernel only supports 64-bit x86, so UML has followed suit. However, it's significantly easier to support 32-bit i386 on UML than on bare metal, as UML does not use the -mregparm option (which alters the ABI), which is not yet supported by rustc[1]. Add support for CONFIG_RUST on um/i386, by adding a new target config to generate_rust_target, and replacing various checks on CONFIG_X86_64 to also support CONFIG_X86_32. We still use generate_rust_target, rather than a built-in rustc target, in order to match x86_64, provide a future place for -mregparm, and more easily disable floating point instructions. With these changes, the KUnit tests pass with: kunit.py run --make_options LLVM=1 --kconfig_add CONFIG_RUST=y --kconfig_add CONFIG_64BIT=n --kconfig_add CONFIG_FORTIFY_SOURCE=n An earlier version of these changes was proposed on the Rust-for-Linux github[2]. [1]: https://github.com/rust-lang/rust/issues/116972 [2]: https://github.com/Rust-for-Linux/linux/pull/966 Signed-off-by: David Gow <davidgow@google.com> Link: https://patch.msgid.link/20240604224052.3138504-1-davidgow@google.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
61 lines
2.0 KiB
Makefile
61 lines
2.0 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
###
|
|
# scripts contains sources for various helper programs used throughout
|
|
# the kernel for the build process.
|
|
|
|
hostprogs-always-$(CONFIG_KALLSYMS) += kallsyms
|
|
hostprogs-always-$(BUILD_C_RECORDMCOUNT) += recordmcount
|
|
hostprogs-always-$(CONFIG_BUILDTIME_TABLE_SORT) += sorttable
|
|
hostprogs-always-$(CONFIG_ASN1) += asn1_compiler
|
|
hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT) += sign-file
|
|
hostprogs-always-$(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_X86_32)),)
|
|
always-$(CONFIG_RUST) += target.json
|
|
filechk_rust_target = $< < include/config/auto.conf
|
|
|
|
$(obj)/target.json: scripts/generate_rust_target include/config/auto.conf FORCE
|
|
$(call filechk,rust_target)
|
|
endif
|
|
|
|
hostprogs += generate_rust_target
|
|
generate_rust_target-rust := y
|
|
rustdoc_test_builder-rust := y
|
|
rustdoc_test_gen-rust := y
|
|
|
|
HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
|
|
HOSTLDLIBS_sorttable = -lpthread
|
|
HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
|
|
HOSTCFLAGS_sign-file.o = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null)
|
|
HOSTLDLIBS_sign-file = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
|
|
|
|
ifdef CONFIG_UNWINDER_ORC
|
|
ifeq ($(ARCH),x86_64)
|
|
SRCARCH := x86
|
|
endif
|
|
ifeq ($(ARCH),loongarch)
|
|
SRCARCH := loongarch
|
|
endif
|
|
HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/$(SRCARCH)/include
|
|
HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED
|
|
endif
|
|
|
|
ifdef CONFIG_BUILDTIME_MCOUNT_SORT
|
|
HOSTCFLAGS_sorttable.o += -DMCOUNT_SORT_ENABLED
|
|
endif
|
|
|
|
# The following programs are only built on demand
|
|
hostprogs += unifdef
|
|
|
|
# The module linker script is preprocessed on demand
|
|
targets += module.lds
|
|
|
|
subdir-$(CONFIG_GCC_PLUGINS) += gcc-plugins
|
|
subdir-$(CONFIG_MODVERSIONS) += genksyms
|
|
subdir-$(CONFIG_SECURITY_SELINUX) += selinux
|
|
|
|
# Let clean descend into subdirs
|
|
subdir- += basic dtc gdb kconfig mod
|