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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 \
20 arch-signal.h module.h vm-flags.h
21SYMLINK_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
47SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
48
49include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
50
51core-y += $(SUBARCH_CORE)
52libs-y += $(SUBARCH_LIBS)
53
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
57# errnos.
58
59CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
60 $(ARCH_INCLUDE) $(MODE_INCLUDE)
61
62USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
63USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
64 $(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
65CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
66CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
67
68#This will adjust *FLAGS accordingly to the platform.
69include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
70
71# These are needed for clean and mrproper, since in that case .config is not
72# included; the values here are meaningless
73
74CONFIG_NEST_LEVEL ?= 0
75CONFIG_KERNEL_HALF_GIGS ?= 0
76
77SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
78
79ifeq ($(CONFIG_MODE_SKAS), y)
80$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
81endif
82
83.PHONY: linux
84
85all: linux
86
87linux: vmlinux
88 ln -f $< $@
89
90define archhelp
91 echo '* linux - Binary kernel image (./linux) - for backward'
92 echo ' compatibility only, this creates a hard link to the'
93 echo ' real kernel binary, the the "vmlinux" binary you'
94 echo ' find in the kernel root.'
95endef
96
97$(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
98
Al Viro03f81dc2005-05-05 16:15:19 -070099prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
101LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
102LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
105CONFIG_KERNEL_STACK_ORDER ?= 2
106STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
107
108ifndef START
109 START = $$(($(TOP_ADDR) - $(SIZE)))
110endif
111
112CPPFLAGS_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))
116
117#The wrappers will select whether using "malloc" or the kernel allocator.
118LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
119
120CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
121define cmd_vmlinux__
122 $(CC) $(CFLAGS_vmlinux) -o $@ \
123 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
124 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700125 -lutil \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
127 FORCE ,$^) ; rm -f linux
128endef
129
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.
132CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
133 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h
134
135MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
136 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
137 $(ARCH_DIR)/Kconfig_arch
138
139archclean:
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
143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144$(SYMLINK_HEADERS):
145 @echo ' SYMLINK $@'
146 $(Q)cd $(TOPDIR)/$(dir $@) ; \
147 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
148
149include/asm-um/arch:
150 @echo ' SYMLINK $@'
151 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
152
153$(ARCH_DIR)/include/sysdep:
154 @echo ' SYMLINK $@'
155 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
156
157$(ARCH_DIR)/os:
158 @echo ' SYMLINK $@'
159 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
160
161# Generated files
162define filechk_umlconfig
163 sed 's/ CONFIG/ UML_CONFIG/'
164endef
165
166$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
167 $(call filechk,umlconfig)
168
Al Viro8d0b9dc2005-05-05 16:15:23 -0700169$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
170 $(CC) $(USER_CFLAGS) -S -o $@ $<
171
172$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
173 $(call filechk,gen-asm-offsets)
174
175CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
176
Al Viroa31769e2005-05-05 16:15:25 -0700177$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
178 $(ARCH_SYMLINKS) \
179 $(SYS_DIR)/sc.h \
180 include/asm include/linux/version.h \
181 include/config/MARKER \
182 $(ARCH_DIR)/include/user_constants.h
183 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
184
185$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
186 $(call filechk,gen-asm-offsets)
187
188CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
191 $(call filechk,gen_header)
192
Al Virofcddd722005-05-05 16:15:22 -0700193$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 $(call filechk,gen_header)
195
196$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
197 $(call filechk,gen_header)
198
199$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
200 $(call filechk,gen_header)
201
Al Virofcddd722005-05-05 16:15:22 -0700202$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
204$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
205 FORCE ;
206
207$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
208
209$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE
210 $(Q)$(MAKE) $(build)=$@
211
Al Viro1cd3bc12005-05-05 16:15:24 -0700212$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 $(Q)$(MAKE) $(build)=$@
214
Al Virofcddd722005-05-05 16:15:22 -0700215$(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 $(Q)$(MAKE) $(build)=$@
217
218export SUBARCH USER_CFLAGS OS