| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768 |
- BPF_DEPENDS := @HAS_BPF_TOOLCHAIN
- ifneq ($(CONFIG_BPF_TOOLCHAIN_HOST),)
- BPF_TOOLCHAIN_HOST_PATH:=$(call qstrip,$(CONFIG_BPF_TOOLCHAIN_HOST_PATH))
- ifneq ($(BPF_TOOLCHAIN_HOST_PATH),)
- BPF_PATH:=$(BPF_TOOLCHAIN_HOST_PATH)/bin:$(PATH)
- else
- BPF_PATH:=$(PATH)
- endif
- CLANG:=$(firstword $(shell PATH='$(BPF_PATH)' which clang clang-13 clang-12 clang-11))
- LLVM_VER:=$(subst clang,,$(notdir $(CLANG)))
- else
- CLANG:=$(STAGING_DIR_HOST)/bin/clang
- LLVM_VER:=
- endif
- LLVM_PATH:=$(dir $(CLANG))
- LLVM_LLC:=$(LLVM_PATH)/llc$(LLVM_VER)
- LLVM_DIS:=$(LLVM_PATH)/llvm-dis$(LLVM_VER)
- LLVM_OPT:=$(LLVM_PATH)/opt$(LLVM_VER)
- LLVM_STRIP:=$(LLVM_PATH)/llvm-strip$(LLVM_VER)
- BPF_KARCH:=mips
- BPF_ARCH:=mips$(if $(CONFIG_BIG_ENDIAN),,el)
- BPF_TARGET:=bpf$(if $(CONFIG_BIG_ENDIAN),eb,el)
- BPF_HEADERS_DIR:=$(STAGING_DIR)/bpf-headers
- BPF_KERNEL_INCLUDE := \
- -nostdinc -isystem $(TOOLCHAIN_DIR)/include \
- -I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include \
- -I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/asm/mach-generic \
- -I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/generated \
- -I$(BPF_HEADERS_DIR)/include \
- -I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/uapi \
- -I$(BPF_HEADERS_DIR)/arch/$(BPF_KARCH)/include/generated/uapi \
- -I$(BPF_HEADERS_DIR)/include/uapi \
- -I$(BPF_HEADERS_DIR)/include/generated/uapi \
- -I$(BPF_HEADERS_DIR)/tools/lib \
- -I$(BPF_HEADERS_DIR)/tools/testing/selftests \
- -I$(BPF_HEADERS_DIR)/samples/bpf \
- -include linux/kconfig.h -include asm_goto_workaround.h
- BPF_CFLAGS := \
- $(BPF_KERNEL_INCLUDE) -I$(PKG_BUILD_DIR) \
- -D__KERNEL__ -D__BPF_TRACING__ \
- -D__TARGET_ARCH_${BPF_KARCH} \
- -m$(if $(CONFIG_BIG_ENDIAN),big,little)-endian \
- -fno-stack-protector -Wall \
- -Wno-unused-value -Wno-pointer-sign \
- -Wno-compare-distinct-pointer-types \
- -Wno-gnu-variable-sized-type-not-at-end \
- -Wno-address-of-packed-member -Wno-tautological-compare \
- -Wno-unknown-warning-option \
- -fno-asynchronous-unwind-tables \
- -Wno-uninitialized -Wno-unused-variable \
- -Wno-unused-label \
- -O2 -emit-llvm -Xclang -disable-llvm-passes
- define CompileBPF
- $(CLANG) -g -target $(BPF_ARCH)-linux-gnu $(BPF_CFLAGS) $(2) \
- -c $(1) -o $(patsubst %.c,%.bc,$(1))
- $(LLVM_OPT) -O2 -mtriple=$(BPF_TARGET) < $(patsubst %.c,%.bc,$(1)) > $(patsubst %.c,%.opt,$(1))
- $(LLVM_DIS) < $(patsubst %.c,%.opt,$(1)) > $(patsubst %.c,%.S,$(1))
- $(LLVM_LLC) -march=$(BPF_TARGET) -filetype=obj -o $(patsubst %.c,%.o,$(1)) < $(patsubst %.c,%.S,$(1))
- $(LLVM_STRIP) --strip-debug $(patsubst %.c,%.o,$(1))
- endef
|
