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 include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
56 core-y += $(SUBARCH_CORE)
57 libs-y += $(SUBARCH_LIBS)
59 # -Derrno=kernel_errno - This turns all kernel references to errno into
60 # kernel_errno to separate them from the libc errno. This allows -fno-common
61 # in CFLAGS. Otherwise, it would cause ld to complain about the two different
64 CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
65 $(ARCH_INCLUDE) $(MODE_INCLUDE)
67 USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
68 USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
69 $(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
70 CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
71 CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
73 #This will adjust *FLAGS accordingly to the platform.
74 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
76 # These are needed for clean and mrproper, since in that case .config is not
77 # included; the values here are meaningless
79 CONFIG_NEST_LEVEL ?= 0
80 CONFIG_KERNEL_HALF_GIGS ?= 0
82 SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
84 ifeq ($(CONFIG_MODE_SKAS), y)
85 $(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
96 echo '* linux - Binary kernel image (./linux) - for backward'
97 echo ' compatibility only, this creates a hard link to the'
98 echo ' real kernel binary, the the "vmlinux" binary you'
99 echo ' find in the kernel root.'
102 ifneq ($(KBUILD_SRC),)
103 $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig_$(SUBARCH) $(ARCH_DIR)/Kconfig_arch)
104 CLEAN_FILES += $(ARCH_DIR)/Kconfig_arch
106 $(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
109 prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
111 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
112 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
114 CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
115 CONFIG_KERNEL_STACK_ORDER ?= 2
116 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
119 START = $$(($(TOP_ADDR) - $(SIZE)))
122 CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
123 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
124 -DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \
125 -DKERNEL_STACK_SIZE=$(STACK_SIZE) -DSUBARCH=$(SUBARCH))
127 #The wrappers will select whether using "malloc" or the kernel allocator.
128 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
130 CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
132 $(CC) $(CFLAGS_vmlinux) -o $@ \
133 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
134 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
136 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
137 FORCE ,$^) ; rm -f linux
140 #When cleaning we don't include .config, so we don't include
141 #TT or skas makefiles and don't clean skas_ptregs.h.
142 CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
143 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \
144 $(ARCH_DIR)/include/user_constants.h
146 MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
147 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
148 $(ARCH_DIR)/Kconfig_arch
151 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
152 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
153 -o -name '*.gcov' \) -type f -print | xargs rm -f
157 ifneq ($(KBUILD_SRC),)
158 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
160 $(Q)cd $(TOPDIR)/$(dir $@) ; \
161 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
166 ifneq ($(KBUILD_SRC),)
167 $(Q)mkdir -p include/asm-um
168 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
170 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
173 $(ARCH_DIR)/include/sysdep:
175 ifneq ($(KBUILD_SRC),)
176 $(Q)mkdir -p $(ARCH_DIR)/include
177 $(Q)mkdir -p $(ARCH_DIR)/include2
178 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
179 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep
181 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
186 ifneq ($(KBUILD_SRC),)
187 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
189 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
193 define filechk_umlconfig
194 sed 's/ CONFIG/ UML_CONFIG/'
197 $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
198 $(call filechk,umlconfig)
200 $(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
201 $(CC) $(USER_CFLAGS) -S -o $@ $<
203 $(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
204 $(call filechk,gen-asm-offsets)
206 CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
208 $(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
211 include/asm include/linux/version.h \
212 include/config/MARKER \
213 $(ARCH_DIR)/include/user_constants.h
214 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
216 $(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
217 $(call filechk,gen-asm-offsets)
219 CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
221 $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
222 $(call filechk,gen_header)
224 $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
225 $(call filechk,gen_header)
227 $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
228 $(call filechk,gen_header)
230 $(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
231 $(call filechk,gen_header)
233 $(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
235 $(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
238 $(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
240 $(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
241 $(Q)$(MAKE) $(build)=$@
243 $(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
244 $(Q)$(MAKE) $(build)=$@
246 $(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
247 $(Q)$(MAKE) $(build)=$@
249 export SUBARCH USER_CFLAGS OS