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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 \
Jeff Dikee23181d2005-11-21 21:32:08 -080020 module.h vm-flags.h elf.h ldt.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) $(ARCH_DIR)/include/uml-config.h
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031um-modes-$(CONFIG_MODE_TT) += tt
32um-modes-$(CONFIG_MODE_SKAS) += skas
33
34MODE_INCLUDE += $(foreach mode,$(um-modes-y),\
35 -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)
36
37MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\
38 $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
39
40ifneq ($(MAKEFILES-INCL),)
41 include $(MAKEFILES-INCL)
42endif
43
44ARCH_INCLUDE := -I$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070045ifneq ($(KBUILD_SRC),)
Al Virofd7aab92005-05-05 16:15:29 -070046ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070047endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070048SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
49
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070050# -Dvmap=kernel_vmap affects everything, and prevents anything from
51# referencing the libpcap.o symbol so named.
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020052#
53# Same things for in6addr_loopback - found in libc.
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070054
55CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020056 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
57 -Din6addr_loopback=kernel_in6addr_loopback
58
Al Viro93ea5a5b2005-09-03 15:57:30 -070059AFLAGS += $(ARCH_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070060
61USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
62USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
Jeff Dikeae173812005-11-07 00:58:57 -080063 $(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065# -Derrno=kernel_errno - This turns all kernel references to errno into
66# kernel_errno to separate them from the libc errno. This allows -fno-common
67# in CFLAGS. Otherwise, it would cause ld to complain about the two different
68# errnos.
69
Miklos Szerediee7be5d2006-01-14 13:20:44 -080070CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
71 -Dmktime=kernel_mktime
Linus Torvalds1da177e2005-04-16 15:20:36 -070072CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
73
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -070074include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076#This will adjust *FLAGS accordingly to the platform.
77include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
78
79# These are needed for clean and mrproper, since in that case .config is not
80# included; the values here are meaningless
81
82CONFIG_NEST_LEVEL ?= 0
83CONFIG_KERNEL_HALF_GIGS ?= 0
84
85SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087.PHONY: linux
88
89all: linux
90
91linux: vmlinux
92 ln -f $< $@
93
94define archhelp
95 echo '* linux - Binary kernel image (./linux) - for backward'
96 echo ' compatibility only, this creates a hard link to the'
97 echo ' real kernel binary, the the "vmlinux" binary you'
98 echo ' find in the kernel root.'
99endef
100
Al Virofd7aab92005-05-05 16:15:29 -0700101ifneq ($(KBUILD_SRC),)
Jeff Dike08b178e2005-09-03 15:57:12 -0700102$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700103else
Jeff Dike08b178e2005-09-03 15:57:12 -0700104$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700105endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Al Viroecba97d2005-09-28 22:27:23 +0100107archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h
108prepare: $(ARCH_DIR)/include/kern_constants.h
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
110LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
111LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
114CONFIG_KERNEL_STACK_ORDER ?= 2
115STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
116
117ifndef START
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700118 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119endif
120
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700121CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700123 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
124 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \
125 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126
127#The wrappers will select whether using "malloc" or the kernel allocator.
128LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
129
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -0700130CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131define cmd_vmlinux__
132 $(CC) $(CFLAGS_vmlinux) -o $@ \
133 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
134 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700135 -lutil \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
137 FORCE ,$^) ; rm -f linux
138endef
139
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.
142CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
Al Viroecba97d2005-09-28 22:27:23 +0100143 $(ARCH_DIR)/include/user_constants.h \
144 $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
Paolo 'Blaisorblade' Giarrusso2d5cbf32005-09-10 19:44:53 +0200147 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
149archclean:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
151 -o -name '*.gcov' \) -type f -print | xargs rm -f
152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153$(SYMLINK_HEADERS):
154 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700155ifneq ($(KBUILD_SRC),)
Paolo 'Blaisorblade' Giarrusso5cd10da2005-10-09 21:37:05 +0200156 $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
Al Virofd7aab92005-05-05 16:15:29 -0700157else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 $(Q)cd $(TOPDIR)/$(dir $@) ; \
159 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
Al Virofd7aab92005-05-05 16:15:29 -0700160endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162include/asm-um/arch:
163 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700164ifneq ($(KBUILD_SRC),)
165 $(Q)mkdir -p include/asm-um
166 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
167else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
Al Virofd7aab92005-05-05 16:15:29 -0700169endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
171$(ARCH_DIR)/include/sysdep:
172 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700173ifneq ($(KBUILD_SRC),)
174 $(Q)mkdir -p $(ARCH_DIR)/include
Al Viroecba97d2005-09-28 22:27:23 +0100175 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700176else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700178endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
180$(ARCH_DIR)/os:
181 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700182ifneq ($(KBUILD_SRC),)
183 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
184else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
Al Virofd7aab92005-05-05 16:15:29 -0700186endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
188# Generated files
189define filechk_umlconfig
190 sed 's/ CONFIG/ UML_CONFIG/'
191endef
192
Jeff Dike4ee189a2006-01-11 12:17:23 -0800193$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
194 $(call filechk,umlconfig)
195
196$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
197 $(CC) $(USER_CFLAGS) -S -o $@ $<
198
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200199define filechk_gen-asm-offsets
200 (set -e; \
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200201 echo "/*"; \
202 echo " * DO NOT MODIFY."; \
203 echo " *"; \
204 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
205 echo " *"; \
206 echo " */"; \
207 echo ""; \
208 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
Al Viroecba97d2005-09-28 22:27:23 +0100209 echo ""; )
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200210endef
211
Al Viroecba97d2005-09-28 22:27:23 +0100212$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s
Al Viro8d0b9dc2005-05-05 16:15:23 -0700213 $(call filechk,gen-asm-offsets)
214
Al Viroecba97d2005-09-28 22:27:23 +0100215CLEAN_FILES += $(ARCH_DIR)/user-offsets.s
Al Viro8d0b9dc2005-05-05 16:15:23 -0700216
Jeff Dike4ee189a2006-01-11 12:17:23 -0800217$(ARCH_DIR)/include/kern_constants.h:
218 @echo ' SYMLINK $@'
219 $(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
221export SUBARCH USER_CFLAGS OS