diff options
Diffstat (limited to 'arch/um/Makefile')
| -rw-r--r-- | arch/um/Makefile | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile new file mode 100644 index 00000000000..97bca6b5ca9 --- /dev/null +++ b/arch/um/Makefile @@ -0,0 +1,210 @@ +# +# Copyright (C) 2002 Jeff Dike (jdike@karaya.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)/ + +# Have to precede the include because the included Makefiles reference them. +SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \ + arch-signal.h module.h vm-flags.h +SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header)) + +# XXX: The "os" symlink is only used by arch/um/include/os.h, which includes +# ../os/include/file.h +# +# These are cleaned up during mrproper. Please DO NOT fix it again, this is +# the Correct Thing(tm) to do! +ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \ + $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h + +GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h + +um-modes-$(CONFIG_MODE_TT) += tt +um-modes-$(CONFIG_MODE_SKAS) += skas + +MODE_INCLUDE += $(foreach mode,$(um-modes-y),\ + -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include) + +MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\ + $(srctree)/$(ARCH_DIR)/Makefile-$(mode)) + +ifneq ($(MAKEFILES-INCL),) + include $(MAKEFILES-INCL) +endif + +ARCH_INCLUDE := -I$(ARCH_DIR)/include +SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) + +include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) + +core-y += $(SUBARCH_CORE) +libs-y += $(SUBARCH_LIBS) + +# -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 CFLAGS. Otherwise, it would cause ld to complain about the two different +# errnos. + +CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ + $(ARCH_INCLUDE) $(MODE_INCLUDE) + +USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) +USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ + $(MODE_INCLUDE) $(ARCH_USER_CFLAGS) +CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask +CFLAGS += $(call cc-option,-fno-unit-at-a-time,) + +#This will adjust *FLAGS accordingly to the platform. +include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) + +# These are needed for clean and mrproper, since in that case .config is not +# included; the values here are meaningless + +CONFIG_NEST_LEVEL ?= 0 +CONFIG_KERNEL_HALF_GIGS ?= 0 + +SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) + +ifeq ($(CONFIG_MODE_SKAS), y) +$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h +endif + +.PHONY: linux + +all: linux + +linux: vmlinux + ln -f $< $@ + +define archhelp + echo '* linux - Binary kernel image (./linux) - for backward' + echo ' compatibility only, this creates a hard link to the' + echo ' real kernel binary, the the "vmlinux" binary you' + echo ' find in the kernel root.' +endef + +$(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch) + +prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) \ + $(ARCH_DIR)/kernel/vmlinux.lds.S + +LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static +LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib + +LD_SCRIPT-$(CONFIG_LD_SCRIPT_STATIC) := uml.lds.S +LD_SCRIPT-$(CONFIG_LD_SCRIPT_DYN) := dyn.lds.S + +CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT +CONFIG_KERNEL_STACK_ORDER ?= 2 +STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) + +ifndef START + START = $$(($(TOP_ADDR) - $(SIZE))) +endif + +CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \ + -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ + -DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \ + -DKERNEL_STACK_SIZE=$(STACK_SIZE)) + +#The wrappers will select whether using "malloc" or the kernel allocator. +LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc + +CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS) +define cmd_vmlinux__ + $(CC) $(CFLAGS_vmlinux) -o $@ \ + -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ + -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ + -L/usr/lib -lutil \ + $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ + FORCE ,$^) ; 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/uml-config.h \ + $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h + +MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ + $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \ + $(ARCH_DIR)/Kconfig_arch + +archclean: + $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util + @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ + -o -name '*.gcov' \) -type f -print | xargs rm -f + +#We need to re-preprocess this when the symlink dest changes. +#So we touch it when needed. +$(ARCH_DIR)/kernel/vmlinux.lds.S: FORCE + $(Q)if [ "$(shell readlink $@)" != "$(LD_SCRIPT-y)" ]; then \ + echo ' SYMLINK $@'; \ + ln -sf $(LD_SCRIPT-y) $@; \ + touch $@; \ + fi; + +$(SYMLINK_HEADERS): + @echo ' SYMLINK $@' + $(Q)cd $(TOPDIR)/$(dir $@) ; \ + ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) + +include/asm-um/arch: + @echo ' SYMLINK $@' + $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch + +$(ARCH_DIR)/include/sysdep: + @echo ' SYMLINK $@' + $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep + +$(ARCH_DIR)/os: + @echo ' SYMLINK $@' + $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os + +# Generated files +define filechk_umlconfig + sed 's/ CONFIG/ UML_CONFIG/' +endef + +$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h + $(call filechk,umlconfig) + +$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task + $(call filechk,gen_header) + +$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os/util/mk_user_constants + $(call filechk,gen_header) + +$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants + $(call filechk,gen_header) + +$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs + $(call filechk,gen_header) + +$(ARCH_DIR)/os/util/mk_user_constants: $(ARCH_DIR)/os/util FORCE ; + +$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \ + FORCE ; + +$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ; + +$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE + $(Q)$(MAKE) $(build)=$@ + +$(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE + $(Q)$(MAKE) $(build)=$@ + +$(ARCH_DIR)/os/util: scripts_basic FORCE + $(Q)$(MAKE) $(build)=$@ + +export SUBARCH USER_CFLAGS OS |