diff options
Diffstat (limited to 'arch/um/Makefile')
| -rw-r--r-- | arch/um/Makefile | 90 |
1 files changed, 51 insertions, 39 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile index 0728def3223..e4b1a9639c4 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -6,6 +6,17 @@ # Licensed under the GPL # +# select defconfig based on actual architecture +ifeq ($(SUBARCH),x86) + ifeq ($(shell uname -m),x86_64) + KBUILD_DEFCONFIG := x86_64_defconfig + else + KBUILD_DEFCONFIG := i386_defconfig + endif +else + KBUILD_DEFCONFIG := $(SUBARCH)_defconfig +endif + ARCH_DIR := arch/um OS := $(shell uname -s) # We require bash because the vmlinux link and loader script cpp use bash @@ -20,15 +31,27 @@ core-y += $(ARCH_DIR)/kernel/ \ MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas +HEADER_ARCH := $(SUBARCH) + +ifneq ($(filter $(SUBARCH),x86 x86_64 i386),) + HEADER_ARCH := x86 +endif + +ifdef CONFIG_64BIT + KBUILD_CFLAGS += -mcmodel=large +endif + +HOST_DIR := arch/$(HEADER_ARCH) + include $(srctree)/$(ARCH_DIR)/Makefile-skas +include $(srctree)/$(HOST_DIR)/Makefile.um + +core-y += $(HOST_DIR)/um/ SHARED_HEADERS := $(ARCH_DIR)/include/shared ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS) -ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared -ifneq ($(KBUILD_SRC),) -ARCH_INCLUDE += -I$(SHARED_HEADERS) -endif -KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH) +ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared +KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so # named - it's a common symbol in libpcap, so we get a binary which crashes. @@ -38,23 +61,24 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH) # # These apply to USER_CFLAGS to. -KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ +KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ -Din6addr_loopback=kernel_in6addr_loopback \ - -Din6addr_any=kernel_in6addr_any + -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr KBUILD_AFLAGS += $(ARCH_INCLUDE) USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ - $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 - -include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) + $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include #This will adjust *FLAGS accordingly to the platform. include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) -KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include +KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \ + -I$(srctree)/$(HOST_DIR)/include/uapi \ + -I$(HOST_DIR)/include/generated \ + -I$(HOST_DIR)/include/generated/uapi # -Derrno=kernel_errno - This turns all kernel references to errno into # kernel_errno to separate them from the libc errno. This allows -fno-common @@ -84,10 +108,12 @@ define archhelp echo ' find in the kernel root.' endef -KBUILD_KCONFIG := arch/um/Kconfig.$(HEADER_ARCH) +KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig + +archheaders: + $(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders -archprepare: $(SHARED_HEADERS)/user_constants.h -archprepare: $(SHARED_HEADERS)/kern_constants.h +archprepare: include/generated/user_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib @@ -96,32 +122,22 @@ CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) $(call cc-option, -fno-stack-protector,) \ $(call cc-option, -fno-stack-protector-all,) -CONFIG_KERNEL_STACK_ORDER ?= 2 -STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) - -CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ - -DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE) +# Options used by linker script +export LDS_START := $(START) +export LDS_ELF_ARCH := $(ELF_ARCH) +export LDS_ELF_FORMAT := $(ELF_FORMAT) # The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt)) -CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) -define cmd_vmlinux__ - $(CC) $(CFLAGS_vmlinux) -o $@ \ - -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ - -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ - -lutil \ - $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o \ - FORCE ,$^) ; rm -f linux -endef +# Used by link-vmlinux.sh which has special support for um link +export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. -CLEAN_FILES += linux x.i gmon.out \ - $(SHARED_HEADERS)/user_constants.h \ - $(SHARED_HEADERS)/kern_constants.h +CLEAN_FILES += linux x.i gmon.out archclean: @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ @@ -129,8 +145,8 @@ archclean: # Generated files -$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE - $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@ +$(HOST_DIR)/um/user-offsets.s: __headers FORCE + $(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@ define filechk_gen-asm-offsets (set -e; \ @@ -145,11 +161,7 @@ define filechk_gen-asm-offsets echo ""; ) endef -$(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s +include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s $(call filechk,gen-asm-offsets) -$(SHARED_HEADERS)/kern_constants.h: - $(Q)mkdir -p $(dir $@) - $(Q)echo '#include "../../../../include/asm/asm-offsets.h"' >$@ - -export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH +export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH |