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 arch-signal.h module.h vm-flags.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 SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
49 include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
51 core-y += $(SUBARCH_CORE)
52 libs-y += $(SUBARCH_LIBS)
54 # -Derrno=kernel_errno - This turns all kernel references to errno into
55 # kernel_errno to separate them from the libc errno. This allows -fno-common
56 # in CFLAGS. Otherwise, it would cause ld to complain about the two different
59 CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
60 $(ARCH_INCLUDE) $(MODE_INCLUDE)
62 USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
63 USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
64 $(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
65 CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
66 CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
68 #This will adjust *FLAGS accordingly to the platform.
69 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
71 # These are needed for clean and mrproper, since in that case .config is not
72 # included; the values here are meaningless
74 CONFIG_NEST_LEVEL ?= 0
75 CONFIG_KERNEL_HALF_GIGS ?= 0
77 SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
79 ifeq ($(CONFIG_MODE_SKAS), y)
80 $(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
91 echo '* linux - Binary kernel image (./linux) - for backward'
92 echo ' compatibility only, this creates a hard link to the'
93 echo ' real kernel binary, the the "vmlinux" binary you'
94 echo ' find in the kernel root.'
97 $(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
99 prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
101 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
102 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
104 CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
105 CONFIG_KERNEL_STACK_ORDER ?= 2
106 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
109 START = $$(($(TOP_ADDR) - $(SIZE)))
112 CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
113 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
114 -DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \
115 -DKERNEL_STACK_SIZE=$(STACK_SIZE))
117 #The wrappers will select whether using "malloc" or the kernel allocator.
118 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
120 CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
122 $(CC) $(CFLAGS_vmlinux) -o $@ \
123 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
124 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
126 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
127 FORCE ,$^) ; rm -f linux
130 #When cleaning we don't include .config, so we don't include
131 #TT or skas makefiles and don't clean skas_ptregs.h.
132 CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
133 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h
135 MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
136 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
137 $(ARCH_DIR)/Kconfig_arch
140 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
141 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
142 -o -name '*.gcov' \) -type f -print | xargs rm -f
146 $(Q)cd $(TOPDIR)/$(dir $@) ; \
147 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
151 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
153 $(ARCH_DIR)/include/sysdep:
155 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
159 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
162 define filechk_umlconfig
163 sed 's/ CONFIG/ UML_CONFIG/'
166 $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
167 $(call filechk,umlconfig)
169 $(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
170 $(CC) $(USER_CFLAGS) -S -o $@ $<
172 $(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
173 $(call filechk,gen-asm-offsets)
175 CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
177 $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
178 $(call filechk,gen_header)
180 $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
181 $(call filechk,gen_header)
183 $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
184 $(call filechk,gen_header)
186 $(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
187 $(call filechk,gen_header)
189 $(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
191 $(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
194 $(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
196 $(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE
197 $(Q)$(MAKE) $(build)=$@
199 $(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE
200 $(Q)$(MAKE) $(build)=$@
202 $(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
203 $(Q)$(MAKE) $(build)=$@
205 export SUBARCH USER_CFLAGS OS