| # |
| # This file is included by the global makefile so that you can add your own |
| # architecture-specific flags and dependencies. |
| # |
| # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
| # Licensed under the GPL |
| # |
| |
| ARCH_DIR := arch/um |
| OS := $(shell uname -s) |
| # We require bash because the vmlinux link and loader script cpp use bash |
| # features. |
| SHELL := /bin/bash |
| |
| filechk_gen_header = $< |
| |
| core-y += $(ARCH_DIR)/kernel/ \ |
| $(ARCH_DIR)/drivers/ \ |
| $(ARCH_DIR)/os-$(OS)/ |
| |
| # These are cleaned up during mrproper. Please DO NOT fix it again, this is |
| # the Correct Thing(tm) to do! |
| ARCH_SYMLINKS = $(ARCH_DIR)/include/shared/uml-config.h |
| |
| MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas |
| |
| include $(srctree)/$(ARCH_DIR)/Makefile-skas |
| |
| ARCH_INCLUDE := -I$(srctree)/$(ARCH_DIR)/include/shared |
| ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared |
| ifneq ($(KBUILD_SRC),) |
| ARCH_INCLUDE += -I$(ARCH_DIR)/include/shared # for three generated files |
| endif |
| KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH) |
| |
| # -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. |
| # |
| # Same things for in6addr_loopback and mktime - found in libc. For these two we |
| # only get link-time error, luckily. |
| # |
| # These apply to USER_CFLAGS to. |
| |
| KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ |
| $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ |
| -Din6addr_loopback=kernel_in6addr_loopback \ |
| -Din6addr_any=kernel_in6addr_any |
| |
| 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) |
| |
| #This will adjust *FLAGS accordingly to the platform. |
| include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) |
| |
| KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include |
| |
| # -Derrno=kernel_errno - This turns all kernel references to errno into |
| # kernel_errno to separate them from the libc errno. This allows -fno-common |
| # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different |
| # errnos. |
| # These apply to kernelspace only. |
| # |
| # strip leading and trailing whitespace to make the USER_CFLAGS removal of these |
| # defines more robust |
| |
| KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ |
| -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) |
| KBUILD_CFLAGS += $(KERNEL_DEFINES) |
| |
| PHONY += linux |
| |
| all: linux |
| |
| linux: vmlinux |
| @echo ' LINK $@' |
| $(Q)ln -f $< $@ |
| |
| define archhelp |
| echo '* linux - Binary kernel image (./linux) - for backward' |
| echo ' compatibility only, this creates a hard link to the' |
| echo ' real kernel binary, the "vmlinux" binary you' |
| echo ' find in the kernel root.' |
| endef |
| |
| ifneq ($(KBUILD_SRC),) |
| $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(HEADER_ARCH) $(ARCH_DIR)/Kconfig.arch) |
| else |
| $(shell ln -fsn Kconfig.$(HEADER_ARCH) $(ARCH_DIR)/Kconfig.arch) |
| endif |
| |
| archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/shared/user_constants.h |
| prepare: $(ARCH_DIR)/include/shared/kern_constants.h |
| |
| LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static |
| LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib |
| |
| 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) |
| |
| # 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 |
| |
| # 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 $(ARCH_DIR)/include/shared/uml-config.h \ |
| $(ARCH_DIR)/include/shared/user_constants.h \ |
| $(ARCH_DIR)/include/shared/kern_constants.h $(ARCH_DIR)/Kconfig.arch |
| |
| MRPROPER_FILES += $(ARCH_SYMLINKS) |
| |
| archclean: |
| @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
| -o -name '*.gcov' \) -type f -print | xargs rm -f |
| |
| $(objtree)/$(ARCH_DIR)/include/shared: |
| @echo ' MKDIR $@' |
| $(Q)mkdir -p $@ |
| |
| # Generated files |
| define filechk_umlconfig |
| sed 's/ CONFIG/ UML_CONFIG/' |
| endef |
| |
| $(ARCH_DIR)/include/shared/uml-config.h : include/linux/autoconf.h |
| $(call filechk,umlconfig) |
| |
| $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE |
| $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@ |
| |
| define filechk_gen-asm-offsets |
| (set -e; \ |
| echo "/*"; \ |
| echo " * DO NOT MODIFY."; \ |
| echo " *"; \ |
| echo " * This file was generated by arch/$(ARCH)/Makefile"; \ |
| echo " *"; \ |
| echo " */"; \ |
| echo ""; \ |
| sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ |
| echo ""; ) |
| endef |
| |
| $(ARCH_DIR)/include/shared/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s |
| $(call filechk,gen-asm-offsets) |
| |
| $(ARCH_DIR)/include/shared/kern_constants.h: $(objtree)/$(ARCH_DIR)/include/shared |
| @echo ' SYMLINK $@' |
| $(Q)ln -sf ../../../../include/asm/asm-offsets.h $@ |
| |
| export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH |