2 # Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 # Licensed under the GPL
7 OS := $(shell uname -s)
8 # We require bash because the vmlinux link and loader script cpp use bash
12 filechk_gen_header = $<
14 core-y += $(ARCH_DIR)/kernel/ \
15 $(ARCH_DIR)/drivers/ \
18 # Have to precede the include because the included Makefiles reference them.
19 SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
20 module.h vm-flags.h elf.h
21 SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))
23 # XXX: The "os" symlink is only used by arch/um/include/os.h, which includes
24 # ../os/include/file.h
26 # These are cleaned up during mrproper. Please DO NOT fix it again, this is
27 # the Correct Thing(tm) to do!
28 ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
31 GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
33 um-modes-$(CONFIG_MODE_TT) += tt
34 um-modes-$(CONFIG_MODE_SKAS) += skas
36 MODE_INCLUDE += $(foreach mode,$(um-modes-y),\
37 -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)
39 MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\
40 $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
42 ifneq ($(MAKEFILES-INCL),)
43 include $(MAKEFILES-INCL)
46 ARCH_INCLUDE := -I$(ARCH_DIR)/include
47 ifneq ($(KBUILD_SRC),)
48 ARCH_INCLUDE += -I$(ARCH_DIR)/include2
49 ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
50 MRPROPER_DIRS += $(ARCH_DIR)/include2
52 SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
54 # -Dvmap=kernel_vmap affects everything, and prevents anything from
55 # referencing the libpcap.o symbol so named.
57 CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
58 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap
60 USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
61 USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
64 # -Derrno=kernel_errno - This turns all kernel references to errno into
65 # kernel_errno to separate them from the libc errno. This allows -fno-common
66 # in CFLAGS. Otherwise, it would cause ld to complain about the two different
69 CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
70 CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
72 include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
74 #This will adjust *FLAGS accordingly to the platform.
75 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
77 # These are needed for clean and mrproper, since in that case .config is not
78 # included; the values here are meaningless
80 CONFIG_NEST_LEVEL ?= 0
81 CONFIG_KERNEL_HALF_GIGS ?= 0
83 SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
85 ifeq ($(CONFIG_MODE_SKAS), y)
86 $(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
97 echo '* linux - Binary kernel image (./linux) - for backward'
98 echo ' compatibility only, this creates a hard link to the'
99 echo ' real kernel binary, the the "vmlinux" binary you'
100 echo ' find in the kernel root.'
103 ifneq ($(KBUILD_SRC),)
104 $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig_$(SUBARCH) $(ARCH_DIR)/Kconfig_arch)
105 CLEAN_FILES += $(ARCH_DIR)/Kconfig_arch
107 $(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
110 prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
112 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
113 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
115 CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
116 CONFIG_KERNEL_STACK_ORDER ?= 2
117 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
120 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
123 CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
124 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
125 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
126 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \
127 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o
129 #The wrappers will select whether using "malloc" or the kernel allocator.
130 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
132 CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
134 $(CC) $(CFLAGS_vmlinux) -o $@ \
135 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
136 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
138 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
139 FORCE ,$^) ; rm -f linux
142 #When cleaning we don't include .config, so we don't include
143 #TT or skas makefiles and don't clean skas_ptregs.h.
144 CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
145 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \
146 $(ARCH_DIR)/include/user_constants.h
148 MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
149 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
150 $(ARCH_DIR)/Kconfig_arch
153 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
154 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
155 -o -name '*.gcov' \) -type f -print | xargs rm -f
159 ifneq ($(KBUILD_SRC),)
160 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
162 $(Q)cd $(TOPDIR)/$(dir $@) ; \
163 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
168 ifneq ($(KBUILD_SRC),)
169 $(Q)mkdir -p include/asm-um
170 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
172 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
175 $(ARCH_DIR)/include/sysdep:
177 ifneq ($(KBUILD_SRC),)
178 $(Q)mkdir -p $(ARCH_DIR)/include
179 $(Q)mkdir -p $(ARCH_DIR)/include2
180 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
181 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep
183 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
188 ifneq ($(KBUILD_SRC),)
189 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
191 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
195 define filechk_umlconfig
196 sed 's/ CONFIG/ UML_CONFIG/'
199 $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
200 $(call filechk,umlconfig)
202 $(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
203 $(CC) $(USER_CFLAGS) -S -o $@ $<
205 $(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
206 $(call filechk,gen-asm-offsets)
208 CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
210 $(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
213 include/asm include/linux/version.h \
214 include/config/MARKER \
215 $(ARCH_DIR)/include/user_constants.h
216 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
218 $(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
219 $(call filechk,gen-asm-offsets)
221 CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
223 $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
224 $(call filechk,gen_header)
226 $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
227 $(call filechk,gen_header)
229 $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
230 $(call filechk,gen_header)
232 $(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
233 $(call filechk,gen_header)
235 $(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
237 $(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
240 $(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
242 $(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
243 $(Q)$(MAKE) $(build)=$@
245 $(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
246 $(Q)$(MAKE) $(build)=$@
248 $(ARCH_DIR)/os-$(OS)/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
249 $(Q)$(MAKE) $(build)=$@
251 export SUBARCH USER_CFLAGS OS