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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3# Licensed under the GPL
4#
5
6ARCH_DIR := arch/um
7OS := $(shell uname -s)
8# We require bash because the vmlinux link and loader script cpp use bash
9# features.
10SHELL := /bin/bash
11
12filechk_gen_header = $<
13
14core-y += $(ARCH_DIR)/kernel/ \
15 $(ARCH_DIR)/drivers/ \
16 $(ARCH_DIR)/os-$(OS)/
17
18# Have to precede the include because the included Makefiles reference them.
19SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
Bodo Stroesser7c5131a2005-05-05 16:15:39 -070020 module.h vm-flags.h elf.h
Linus Torvalds1da177e2005-04-16 15:20:36 -070021SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))
22
23# XXX: The "os" symlink is only used by arch/um/include/os.h, which includes
24# ../os/include/file.h
25#
26# These are cleaned up during mrproper. Please DO NOT fix it again, this is
27# the Correct Thing(tm) to do!
28ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
30
31GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
32
33um-modes-$(CONFIG_MODE_TT) += tt
34um-modes-$(CONFIG_MODE_SKAS) += skas
35
36MODE_INCLUDE += $(foreach mode,$(um-modes-y),\
37 -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)
38
39MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\
40 $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
41
42ifneq ($(MAKEFILES-INCL),)
43 include $(MAKEFILES-INCL)
44endif
45
46ARCH_INCLUDE := -I$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070047ifneq ($(KBUILD_SRC),)
48ARCH_INCLUDE += -I$(ARCH_DIR)/include2
49ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
50MRPROPER_DIRS += $(ARCH_DIR)/include2
51endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070052SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
53
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070054# -Dvmap=kernel_vmap affects everything, and prevents anything from
55# referencing the libpcap.o symbol so named.
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020056#
57# Same things for in6addr_loopback - found in libc.
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070058
59CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020060 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
61 -Din6addr_loopback=kernel_in6addr_loopback
62
Al Viro93ea5a5b2005-09-03 15:57:30 -070063AFLAGS += $(ARCH_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070064
65USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
66USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -070067 $(MODE_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070068
Linus Torvalds1da177e2005-04-16 15:20:36 -070069# -Derrno=kernel_errno - This turns all kernel references to errno into
70# kernel_errno to separate them from the libc errno. This allows -fno-common
71# in CFLAGS. Otherwise, it would cause ld to complain about the two different
72# errnos.
73
Linus Torvalds1da177e2005-04-16 15:20:36 -070074CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
75CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
76
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -070077include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
78
Linus Torvalds1da177e2005-04-16 15:20:36 -070079#This will adjust *FLAGS accordingly to the platform.
80include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
81
82# These are needed for clean and mrproper, since in that case .config is not
83# included; the values here are meaningless
84
85CONFIG_NEST_LEVEL ?= 0
86CONFIG_KERNEL_HALF_GIGS ?= 0
87
88SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
89
90ifeq ($(CONFIG_MODE_SKAS), y)
91$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
92endif
93
94.PHONY: linux
95
96all: linux
97
98linux: vmlinux
99 ln -f $< $@
100
101define archhelp
102 echo '* linux - Binary kernel image (./linux) - for backward'
103 echo ' compatibility only, this creates a hard link to the'
104 echo ' real kernel binary, the the "vmlinux" binary you'
105 echo ' find in the kernel root.'
106endef
107
Al Virofd7aab92005-05-05 16:15:29 -0700108ifneq ($(KBUILD_SRC),)
Jeff Dike08b178e2005-09-03 15:57:12 -0700109$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700110else
Jeff Dike08b178e2005-09-03 15:57:12 -0700111$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700112endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
Sam Ravnborg5bb78262005-09-11 22:30:22 +0200114archprepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
116LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
117LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
120CONFIG_KERNEL_STACK_ORDER ?= 2
121STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
122
123ifndef START
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700124 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125endif
126
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700127CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700129 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
130 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \
131 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
133#The wrappers will select whether using "malloc" or the kernel allocator.
134LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
135
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -0700136CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137define cmd_vmlinux__
138 $(CC) $(CFLAGS_vmlinux) -o $@ \
139 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
140 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700141 -lutil \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
143 FORCE ,$^) ; rm -f linux
144endef
145
146#When cleaning we don't include .config, so we don't include
147#TT or skas makefiles and don't clean skas_ptregs.h.
148CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
Paolo 'Blaisorblade' Giarrusso8b8a9da2005-07-12 13:58:20 -0700149 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \
Paolo 'Blaisorblade' Giarrusso2d5cbf32005-09-10 19:44:53 +0200150 $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/Kconfig.arch
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
Paolo 'Blaisorblade' Giarrusso2d5cbf32005-09-10 19:44:53 +0200153 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
155archclean:
156 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
Paolo 'Blaisorblade' Giarrusso2d5cbf32005-09-10 19:44:53 +0200157 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/os-$(OS)/util
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
159 -o -name '*.gcov' \) -type f -print | xargs rm -f
160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161$(SYMLINK_HEADERS):
162 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700163ifneq ($(KBUILD_SRC),)
164 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
165else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 $(Q)cd $(TOPDIR)/$(dir $@) ; \
167 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
Al Virofd7aab92005-05-05 16:15:29 -0700168endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170include/asm-um/arch:
171 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700172ifneq ($(KBUILD_SRC),)
173 $(Q)mkdir -p include/asm-um
174 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
175else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
Al Virofd7aab92005-05-05 16:15:29 -0700177endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
179$(ARCH_DIR)/include/sysdep:
180 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700181ifneq ($(KBUILD_SRC),)
182 $(Q)mkdir -p $(ARCH_DIR)/include
183 $(Q)mkdir -p $(ARCH_DIR)/include2
184 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
185 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep
186else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700188endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189
190$(ARCH_DIR)/os:
191 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700192ifneq ($(KBUILD_SRC),)
193 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
194else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
Al Virofd7aab92005-05-05 16:15:29 -0700196endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198# Generated files
199define filechk_umlconfig
200 sed 's/ CONFIG/ UML_CONFIG/'
201endef
202
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200203define filechk_gen-asm-offsets
204 (set -e; \
205 echo "#ifndef __ASM_OFFSETS_H__"; \
206 echo "#define __ASM_OFFSETS_H__"; \
207 echo "/*"; \
208 echo " * DO NOT MODIFY."; \
209 echo " *"; \
210 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
211 echo " *"; \
212 echo " */"; \
213 echo ""; \
214 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
215 echo ""; \
216 echo "#endif" )
217endef
218
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
220 $(call filechk,umlconfig)
221
Al Viro8d0b9dc2005-05-05 16:15:23 -0700222$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
223 $(CC) $(USER_CFLAGS) -S -o $@ $<
224
225$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
226 $(call filechk,gen-asm-offsets)
227
228CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
229
Al Viroa31769e2005-05-05 16:15:25 -0700230$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
231 $(ARCH_SYMLINKS) \
232 $(SYS_DIR)/sc.h \
233 include/asm include/linux/version.h \
234 include/config/MARKER \
235 $(ARCH_DIR)/include/user_constants.h
236 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
237
238$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
239 $(call filechk,gen-asm-offsets)
240
241CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
244 $(call filechk,gen_header)
245
Al Virofcddd722005-05-05 16:15:22 -0700246$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 $(call filechk,gen_header)
248
249$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
250 $(call filechk,gen_header)
251
252$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
253 $(call filechk,gen_header)
254
Al Virofcddd722005-05-05 16:15:22 -0700255$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
257$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
258 FORCE ;
259
260$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
261
Al Viroda998a22005-05-05 16:15:27 -0700262$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 $(Q)$(MAKE) $(build)=$@
264
Al Viro1cd3bc12005-05-05 16:15:24 -0700265$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 $(Q)$(MAKE) $(build)=$@
267
Olaf Heringb6b038a2005-07-27 11:43:30 -0700268$(ARCH_DIR)/os-$(OS)/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 $(Q)$(MAKE) $(build)=$@
270
271export SUBARCH USER_CFLAGS OS